阅读说明：本技术 一种大功率五缸钻井泵组、固控系统及钻机 (High-power five-cylinder drilling pump set, solid control system and drilling machine ) 是由 张芳芳 程建 唐明鹏 蒲宗珉 代俊 曾慧 于 2021-06-29 设计创作，主要内容包括：本发明公开了一种大功率五缸钻井泵组、固控系统及钻机,属于石油钻井装置技术领域；该装置包括底座,所述底座上设置有钻井泵和润滑系统,所述钻井泵包括传动总成、动力端总成以及液力端总成,所述润滑系统包括用于传动总成及动力端总成润滑和冷却的动力端润滑系统,用于液力端总成润滑和冷却的液力端润滑系统；本发明的一种大功率五缸钻井泵组在整个结构的设计上实现了模块化设计,在结构的空间布局上能够有效的解决传统钻井泵或者钻井泵组结构较大的问题,借助传统的结构设计基础上,以本申请解决了带传动、链传动等中间机械变速传动机构所带来的结构复杂的问题,有效的实现了整个结构的优化效果。(The invention discloses a high-power five-cylinder drilling pump set, a solid control system and a drilling machine, belonging to the technical field of petroleum drilling devices; the device comprises a base, wherein a drilling pump and a lubricating system are arranged on the base, the drilling pump comprises a transmission assembly, a power end assembly and a hydraulic end assembly, and the lubricating system comprises a power end lubricating system for lubricating and cooling the transmission assembly and the power end assembly and a hydraulic end lubricating system for lubricating and cooling the hydraulic end assembly; the high-power five-cylinder drilling pump set realizes modular design on the design of the whole structure, can effectively solve the problem of larger structure of the traditional drilling pump or drilling pump set on the spatial layout of the structure, solves the problem of complicated structure caused by intermediate mechanical variable transmission mechanisms such as belt transmission, chain transmission and the like on the basis of the traditional structural design, and effectively realizes the optimization effect of the whole structure.)

1. A high-power five-cylinder drilling pump group is characterized in that: the drilling pump comprises a transmission assembly, a power end assembly and a hydraulic end assembly, wherein the lubrication system comprises a power end lubrication system for lubricating and cooling the transmission assembly and the power end assembly, and a hydraulic end lubrication system for lubricating and cooling the hydraulic end assembly;

the power end lubricating system comprises a prying seat, a lubricating oil pump and a filter, wherein the filter is used for filtering lubricating oil and is communicated with the lubricating oil pump, the filter is communicated with the drilling pump and is communicated with a cooler used for cooling the lubricating oil, the filter is provided with a temperature control switch, and the temperature control switch is used for controlling the lubricating oil to enter the drilling pump for lubricating and cooling or enter the cooler for cooling after coming out of the filter.

2. The high power five cylinder drilling pump package of claim 1, wherein: and the power end lubricating system adopts air cooling or water cooling.

3. The high power five cylinder drilling pump package of claim 1, wherein: the power end lubricating system comprises a lubricating oil suction pipe orifice and a lubricating oil discharge pipe orifice, the lubricating oil pump is provided with an oil pump oil inlet and an oil pump oil outlet, the suction pipe orifice is communicated with the oil pump oil inlet, and the lubricating oil discharge pipe orifice is communicated with the drilling pump;

the filter is provided with a filter oil inlet which is communicated with an oil outlet of the oil pump, the filter is further provided with a filter oil outlet I and a filter oil outlet II, the filter oil outlet I is communicated with the cooler to be used for cooling lubricating oil, and the filter oil outlet II is communicated with an oil outlet pipe orifice to be used for sending the lubricating oil into the drilling pump.

4. A high power five cylinder drilling pump package according to claim 3, characterized in that: the cooler is provided with a cooler oil inlet and a cooler oil outlet, the cooler oil inlet is communicated with the first oil drain port of the filter, and the cooler oil outlet is communicated with the opening of the first oil drain port so as to enable cooled lubricating liquid to enter the drilling pump.

5. A high power five cylinder drilling pump package according to claim 3, characterized in that: the power end lubricating system is also provided with an oil overflow pipeline which is communicated with a system oil pipeline through an overflow safety valve bank, and the oil pressure is detected through the overflow safety valve bank so as to control the overflow of the lubricating oil.

6. The high power five cylinder drilling pump package of claim 1, wherein: the cooler comprises a power module, a heat exchange module and a water curtain module, the power module is cooled by adopting an air suction mode, and the power module comprises a motor and radiating fan blades arranged on a motor rotor.

7. The high power five cylinder drilling pump package of claim 6, wherein: the water curtain module comprises a shell, a heat dissipation water curtain wall, a water inlet water distribution pipe, a water outlet and a water accumulation pool, wherein the shell is provided with a cooling water inlet and is communicated with a water source through the water inlet water distribution pipe, the water curtain module further comprises a water distribution device, and water uniformly enters the upper portion of the heat dissipation water curtain wall through the water distribution device.

8. The high power five cylinder drilling pump package of claim 1, wherein: the transmission assembly comprises a motor module, a transmission mechanism and a crank connecting rod mechanism, wherein the motor module is connected with and assembled with the crank connecting rod mechanism through the transmission mechanism, and the motion of the crank connecting rod mechanism is realized through the motor module;

the power end assembly comprises a plurality of power units, each power unit is assembled and connected to the crank-link mechanism, the other end of each power unit is independently assembled with one piston mechanism of the hydraulic end assembly, and the hydraulic end assembly is driven by the power end assembly.

9. The high power five cylinder drilling pump package of claim 8, wherein: the transmission assembly comprises a rack, a motor module is arranged on the rack, the transmission mechanism comprises a driving wheel arranged on the motor module and a driven wheel used for driving a crank link mechanism, the crank mechanism comprises a crankshaft, the crankshaft is provided with the driven wheel, and a plurality of supporting bearings and a plurality of connecting rods are assembled on the crankshaft;

driving wheels are arranged on two sides of the rack, driven wheels are arranged at two end parts of the crankshaft, the motor module controls 2 driving wheels to synchronously rotate, and the driving wheels and the driven wheels are matched to realize the rotation of the crankshaft;

the motor module both sides are provided with the axis of rotation, the both ends fixed assembly of axis of rotation has the action wheel, action wheel fixed assembly in the axis of rotation, in order to realize the action wheel with the axis of rotation synchronous rotation.

10. The high power five cylinder drilling pump package of claim 9, wherein: the driving wheel is assembled on the rotating shaft in an interference fit mode;

the driving wheel is provided with a conical inner hole, the end part of the rotating shaft is provided with a conical column, and the conical inner hole and the conical column are assembled through interference fit so as to be convenient for the disassembly of the driving wheel; or the driving wheel is provided with a cylindrical inner hole, the end part of the rotating shaft is a circular column, and the cylindrical inner hole and the circular column are assembled through interference fit.

11. The high power five cylinder drilling pump package of claim 9, wherein: the rotating shaft is of an integral structure, or the rotating shaft is of a split structure, and synchronous rotation is achieved under the action of the motor module.

12. The high power five cylinder drilling pump package of claim 8, wherein: the crankshaft is provided with a plurality of crank throws, the crankshaft is fixedly assembled on the rack through a plurality of supporting bearings, the crank throws are positioned between two adjacent supporting bearings, and the crank throws are assembled and connected with connecting rods.

13. The high power five cylinder drilling pump package of claim 12, wherein: the number of the supporting bearings is 6, and the number of the crank throw is 5.

14. The high power five cylinder drilling pump package of claim 8, wherein: the driving wheel and the driven wheel are in transmission in a bevel gear meshing or straight gear meshing mode; the diameter of the driving wheel is smaller than that of the driven wheel so as to realize a speed reduction effect.

15. A high power five cylinder drilling pump package according to any of claims 8-14, wherein: the motor module is of an overhead type and is a permanent magnet integrated motor or an alternating current variable frequency motor.

16. The high power five cylinder drilling pump package of claim 8, wherein: the power end assembly includes the cross head box, the cross head box is provided with a plurality of cross head chambers that are used for assembling the first structure of cross head, be provided with a plurality of connecting rods on the crank link mechanism, every connecting rod and the assembly of the cross head structural connection that corresponds, under the effort of connecting rod, straight reciprocating type motion can be realized to the first structure of cross head.

17. The high power five cylinder drilling pump package of claim 16, wherein: the crosshead box body is also provided with a box body cover plate for covering the crosshead cavity;

the box body cover plate is of an integrated structure; or, the box body cover plate is of a split type structure, the box body cover plate comprises a plurality of cover plate units, and each cover plate unit is arranged on each crosshead cavity, so that the equipment maintenance efficiency is improved.

18. The high power five cylinder drilling pump package of claim 16, wherein: the front end of cross head box is provided with the crankcase that is used for assembling crank link mechanism, the crankcase top is provided with the motor cabinet, and the both sides of motor cabinet are provided with the bearing frame that is used for assembling motor shaft, the tip that the cross head box is used for assembling fluid end assembly is provided with the jar cavity, the tip of jar cavity is provided with preceding wallboard in order to be used for connecting fluid end assembly.

19. The high power five cylinder drilling pump package of claim 8, wherein: the hydraulic end assembly comprises a liquid suction module, a liquid discharge module and a piston mechanism connected with the power end assembly, and the suction and discharge of liquid are controlled by the movement of the piston mechanism;

the liquid suction module sucks liquid in the state that the piston mechanism is contracted;

the liquid discharge module discharges liquid in a state where the piston mechanism is advanced.

20. The high power five cylinder drilling pump package of claim 19, wherein: the hydraulic end assembly comprises a hydraulic end rack, the piston mechanism comprises a piston cylinder assembled on the hydraulic end rack, a piston rod positioned in the piston cylinder and a piston head arranged at the end part of the piston rod, and the other end of the piston rod is assembled with the power end assembly to realize the operation of the piston mechanism.

21. The high power five cylinder drilling pump package of claim 20, wherein: the end part of the power end assembly, which is used for assembling the hydraulic end assembly, is provided with a cylinder chamber, and the end part of the cylinder chamber is provided with a front wall plate used for connecting the hydraulic end assembly; the piston mechanism can be assembled in the cylinder cavity so as to be convenient for assembling the piston mechanism and the power end assembly; the hydraulic end frame is assembled with the front wall plate through bolts to achieve assembly of the whole device.

22. The high power five cylinder drilling pump package of claim 20, wherein: the piston cylinder is assembled on the hydraulic end rack through a plurality of cylinder sleeve bolts, a pressing plate is further arranged on the piston cylinder, and the cylinder sleeve bolts penetrate through the pressing plate and are combined on the hydraulic end rack.

23. The high power five cylinder drilling pump package of claim 22, wherein: the front end of the pressing plate is provided with a gland locking plate, the gland locking plate is positioned through a cylinder sleeve nut, the rear end of the gland locking plate is provided with a cylinder sleeve nut which is used for being attached to the pressing plate to realize positioning, and the front end of the gland locking plate is provided with a cylinder sleeve nut to realize that the gland locking plate is positioned between the two cylinder sleeve nuts.

24. The high power five cylinder drilling pump package of claim 23, wherein: the rear end of the pressing plate is provided with a cylinder sleeve disc withdrawing mechanism, the cylinder sleeve disc withdrawing mechanism comprises a positioning pin shaft fixed on the outer side of a piston cylinder and a cylinder sleeve disc withdrawing, the cylinder sleeve disc withdrawing mechanism can axially move along a cylinder sleeve bolt, a cylinder sleeve nut is further arranged at the end part of the cylinder sleeve disc withdrawing mechanism, a limiting block is arranged on the piston cylinder, the front end of the cylinder sleeve nut is attached to the limiting block for assembly, and the cylinder sleeve disc withdrawing mechanism is fixedly connected with the positioning pin shaft for assembly;

when the cylinder sleeve is disassembled, the cylinder sleeve nut at the front end of the pressure plate is withdrawn for a certain distance or is disassembled, and the cylinder sleeve nut at the rear end of the cylinder sleeve withdrawing disc is screwed to realize the withdrawal of the piston cylinder.

25. The high power five cylinder drilling pump package of claim 19, wherein: the liquid suction module comprises a suction pipe orifice, a valve assembly and a suction cavity, and the opening/closing of the valve assembly is controlled to control the liquid entering of the suction pipe orifice under the action of the piston mechanism;

the liquid discharge module comprises a discharge pipe orifice, a valve assembly and a discharge cavity, the suction cavity is communicated with the discharge cavity, and the opening/closing of the valve assembly of the discharge module is controlled under the action of the piston mechanism to control the liquid discharge of the discharge pipe orifice.

26. The high power five cylinder drilling pump package of claim 1, wherein: the base is further provided with a hoisting frame mechanism, the hoisting frame is further provided with a small pulley, and the small pulley can slide on the hoisting frame.

27. A solid control system is characterized in that: a high power five cylinder drilling pump package including a high power five cylinder drilling pump package according to any of claims 1 to 26.

28. A drilling rig, characterized by: a high power five cylinder drilling pump package including a high power five cylinder drilling pump package according to any of claims 1 to 26.

Technical Field

The invention relates to a high-power five-cylinder drilling pump set, a solid control system and a drilling machine, and belongs to the technical field of petroleum drilling devices.

Background

With the development of the novel drilling process technologies of deep wells/ultra-deep wells, high-pressure jet drilling, large-displacement horizontal wells, cluster wells, ocean platforms and the like, drilling pumps are required to be developed in the directions of high power, large displacement, high pumping pressure, high reliability, high efficiency and light weight. At present, traditional multi-stage transmission modes such as belt transmission, chain transmission or gear transmission and the like are commonly adopted between a drilling pump body and a driving motor, and the defects of more mechanical losses are inevitably generated in the transmission process, so that the transmission efficiency and the working reliability are reduced; secondly, the operation and maintenance workload is large, and the use cost is high; thirdly, the volume and the weight are large, and the rapid transportation and the transition are inconvenient. Are difficult to adapt to the higher and higher technical requirements of the drilling process. Aiming at the construction condition, oil service enterprises hope to design and manufacture a drilling pump group with small floor area, light weight, high efficiency and high power so as to solve the production problem.

Disclosure of Invention

The invention aims to: aiming at the problems, the high-power five-cylinder drilling pump set has the advantages of simple structure, more compactness compared with the traditional structure, and effectively improved working efficiency.

The technical scheme adopted by the invention is as follows:

a high-power five-cylinder drilling pump set comprises a base, wherein a drilling pump and a lubricating system are arranged on the base, the drilling pump comprises a transmission assembly, a power end assembly and a hydraulic end assembly, the lubricating system comprises a power end lubricating system for lubricating and cooling the transmission assembly and the power end assembly, and a hydraulic end lubricating system for lubricating and cooling the hydraulic end assembly;

the power end lubricating system comprises a prying seat, a lubricating oil pump and a filter, wherein the filter is used for filtering lubricating oil and is communicated with the lubricating oil pump, the filter is communicated with the drilling pump and is communicated with a cooler used for cooling the lubricating oil, the filter is provided with a temperature control switch, and the temperature control switch is used for controlling the lubricating oil to enter the drilling pump for lubricating and cooling or enter the cooler for cooling after coming out of the filter.

Furthermore, the power end lubricating system adopts air cooling or water cooling.

Furthermore, the power end lubricating system comprises a lubricating oil suction pipe orifice and a lubricating oil discharge pipe orifice, the lubricating oil pump is provided with an oil pump oil inlet and an oil pump oil outlet, the suction pipe orifice is communicated with the oil pump oil inlet, and the lubricating oil discharge pipe orifice is communicated with the drilling pump;

the filter is provided with a filter oil inlet which is communicated with an oil outlet of the oil pump, the filter is further provided with a filter oil outlet I and a filter oil outlet II, the filter oil outlet I is communicated with the cooler to be used for cooling lubricating oil, and the filter oil outlet II is communicated with an oil outlet pipe orifice to be used for sending the lubricating oil into the drilling pump.

Furthermore, the cooler is provided with a cooler oil inlet and a cooler oil outlet, the cooler oil inlet is communicated with the first oil discharge port of the filter, and the cooler oil outlet is communicated with the opening of the first oil discharge port so as to enable the cooled lubricating liquid to enter the drilling pump.

Furthermore, the power end lubricating system is also provided with an oil overflow pipeline which is communicated with a system oil pipeline through an overflow safety valve bank, and the oil pressure is detected through the overflow safety valve bank so as to control the overflow of the lubricating oil.

Further, the cooler comprises a power module, a heat exchange module and a water curtain module, the power module is cooled in an air suction mode, and the power module comprises a motor and radiating fan blades arranged on a motor rotor.

Furthermore, the water curtain module comprises a shell, a heat dissipation water curtain wall, a water inlet water distribution pipe, a water outlet and a water accumulation pool, wherein the shell is provided with a cooling water inlet and is communicated with a water source through the water inlet water distribution pipe, and the water curtain module also comprises a water distribution device, and water uniformly enters the upper part of the heat dissipation water curtain wall through the water distribution device.

Furthermore, the transmission assembly comprises a motor module, a transmission mechanism and a crank connecting rod mechanism, wherein the motor module is connected with and assembled with the crank connecting rod mechanism through the transmission mechanism, and the motion of the crank connecting rod mechanism is realized through the motor module;

the power end assembly comprises a plurality of power units, each power unit is assembled and connected to the crank-link mechanism, the other end of each power unit is independently assembled with one piston mechanism of the hydraulic end assembly, and the hydraulic end assembly is driven by the power end assembly.

Further, the transmission assembly includes the frame, be provided with motor module in the frame, drive mechanism is including setting up the action wheel on motor module to and be used for driving crank link mechanism from the driving wheel, crank mechanism includes the bent axle, the bent axle is provided with from the driving wheel, be equipped with a plurality of support bearing and many connecting rods on the bent axle.

Furthermore, the both sides of frame are provided with the action wheel, the both ends of bent axle are provided with from the driving wheel, 2 action wheels synchronous rotation of motor module control, the action wheel is with from the rotation of driving wheel cooperation in order to realize the bent axle.

Further, the motor module both sides are provided with the axis of rotation, the both ends of axis of rotation are fixed to be equipped with the action wheel, action wheel fixed assembly in the axis of rotation, in order to realize the action wheel with the axis of rotation synchronous rotation.

Further, the driving wheel is assembled on the rotating shaft in an interference fit mode;

the driving wheel is provided with a conical inner hole, the end part of the rotating shaft is provided with a conical column, and the conical inner hole and the conical column are assembled through interference fit so as to be convenient for the disassembly of the driving wheel; or the driving wheel is provided with a cylindrical inner hole, the end part of the rotating shaft is a circular column, and the cylindrical inner hole and the circular column are assembled through interference fit.

Further, the rotating shaft is of an integral structure, or the rotating shaft is of a split structure, and synchronous rotation is achieved under the action of the motor module.

Furthermore, the crankshaft is provided with a plurality of crank throws, the crankshaft is fixedly assembled on the rack through a plurality of supporting bearings, the crank throws are positioned between two adjacent supporting bearings, and the crank throws are assembled and connected with connecting rods.

Further, the number of the supporting bearings is 6, and the number of the crank throw is 5.

Furthermore, the driving wheel and the driven wheel are in transmission in a bevel gear meshing or straight gear meshing mode; the diameter of the driving wheel is smaller than that of the driven wheel so as to realize a speed reduction effect.

Furthermore, the motor module is in an overhead type and is a permanent magnet integrated motor or a three-phase squirrel-cage asynchronous motor.

Further, power end assembly includes the cross head box, the cross head box is provided with a plurality of cross head chambers that are used for assembling the first structure of cross head, be provided with a plurality of connecting rods on the crank link mechanism, every connecting rod and the assembly of the cross head structural connection that corresponds, under the effort of connecting rod, the first structure of cross head can realize straight reciprocating type motion.

Further, the crosshead box body is also provided with a box body cover plate for covering the crosshead cavity;

the box body cover plate is of an integrated structure; or, the box body cover plate is of a split type structure, the box body cover plate comprises a plurality of cover plate units, and each cover plate unit is arranged on each crosshead cavity, so that the equipment maintenance efficiency is improved.

Further, the front end of cross head box is provided with the crankcase that is used for assembling crank link mechanism, the crankcase top is provided with the motor cabinet, and the both sides of motor cabinet are provided with the bearing frame that is used for assembling motor shaft, the tip that the cross head box is used for assembling hydraulic end assembly is provided with the jar cavity, the tip of jar cavity is provided with preceding wallboard in order to be used for connecting hydraulic end assembly.

Furthermore, the liquid end assembly comprises a liquid suction module, a liquid discharge module and a piston mechanism connected with the power end assembly, and the suction and discharge of the liquid are controlled by the movement of the piston mechanism;

the liquid suction module sucks liquid in the state that the piston mechanism is contracted;

the liquid discharge module discharges liquid in a state where the piston mechanism is advanced.

Furthermore, the hydraulic end assembly comprises a hydraulic end rack, the piston mechanism comprises a piston cylinder assembled on the hydraulic end rack, a piston rod positioned in the piston cylinder and a piston head arranged at the end part of the piston rod, and the other end of the piston rod is assembled with the power end assembly to realize the operation of the piston mechanism.

Furthermore, a cylinder chamber is arranged at the end part of the power end assembly for assembling the hydraulic end assembly, and a front wall plate is arranged at the end part of the cylinder chamber for connecting the hydraulic end assembly; the piston mechanism can be assembled in the cylinder cavity so as to be convenient for assembling the piston mechanism and the power end assembly; the hydraulic end frame is assembled with the front wall plate through bolts to achieve assembly of the whole device.

Furthermore, the piston cylinder is assembled on the hydraulic end rack through a plurality of cylinder sleeve bolts, a pressing plate is further arranged on the piston cylinder, and the cylinder sleeve bolts penetrate through the pressing plate and are combined on the hydraulic end rack.

Furthermore, the front end of the pressing plate is provided with a gland locking plate, the gland locking plate is positioned through a cylinder sleeve nut, the rear end of the gland locking plate is provided with a cylinder sleeve nut for being attached to the pressing plate to realize positioning, and the front end of the gland locking plate is provided with a cylinder sleeve nut to realize that the gland locking plate is positioned between the two cylinder sleeve nuts.

Further, a cylinder sleeve disc withdrawing mechanism is arranged at the rear end of the pressing plate and comprises a positioning pin shaft fixed on the outer side of the piston cylinder and a cylinder sleeve disc withdrawing mechanism, the cylinder sleeve disc withdrawing mechanism can axially move along a cylinder sleeve bolt, a cylinder sleeve nut is further arranged at the end part of the cylinder sleeve disc withdrawing mechanism, a limiting block is arranged on the piston cylinder, the front end of the cylinder sleeve nut is assembled with the limiting block in an attaching mode, and the cylinder sleeve disc withdrawing mechanism is fixedly connected and assembled with the positioning pin shaft;

when the cylinder sleeve is disassembled, the cylinder sleeve nut at the front end of the pressure plate is withdrawn for a certain distance or is disassembled, and the cylinder sleeve nut at the rear end of the cylinder sleeve withdrawing disc is screwed to realize the withdrawal of the piston cylinder.

Further, the liquid suction module comprises a suction pipe orifice, a valve assembly and a suction cavity, and under the action of the piston mechanism, the opening/closing of the valve assembly is controlled to control the liquid entering of the suction pipe orifice;

the liquid discharge module comprises a discharge pipe orifice, a valve assembly and a discharge cavity, the suction cavity is communicated with the discharge cavity, and the opening/closing of the valve assembly of the discharge module is controlled under the action of the piston mechanism to control the liquid discharge of the discharge pipe orifice.

Furthermore, a hoisting frame mechanism is further arranged on the base, a small pulley is further arranged on the hoisting frame, and the small pulley can slide on the hoisting frame.

A solid control system comprises the high-power five-cylinder drilling pump set.

A drilling machine comprises the high-power five-cylinder drilling pump set.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. the high-power five-cylinder drilling pump set, the solid control system and the drilling machine realize modular design on the design of the whole structure, can effectively solve the problem that the structure of the traditional drilling pump or drilling pump set is larger on the spatial layout of the structure, and solve the problem of complicated structure caused by intermediate mechanical variable speed transmission mechanisms such as belt transmission and chain transmission on the basis of the traditional structural design, thereby effectively realizing the optimization effect of the whole structure.

2. Based on the design of the motor, the structure that the single motor is arranged in the overhead and directly driven is adopted structurally, the motor is arranged above the frame, and the pinion is directly and thermally arranged on two sides of the motor shaft through the conical surfaces, so that the structure of the drilling pump is simple, the size in the width direction is reduced, and the transportation requirement is met.

3. Compared with a three-cylinder drilling pump, the discharge flow and the pressure fluctuation of the five-cylinder design adopted by the invention are reduced by 16.5%, and the pressure fluctuation under high pressure is only 2% -3%.

4. In the design of a cooling system, a water curtain type air cooler with special design is adopted in the lubricating and cooling system, when the ambient temperature is higher (higher than 35 ℃), the water curtain module can reduce the temperature of air entering the cooler by about 8-10 ℃ through rapid evaporation of moisture, the heat exchange efficiency of the cooler in a high-temperature environment can be effectively improved, the lubricating oil temperature of the system can be effectively controlled by the power end lubricating system in the high-temperature environment, and the reliable work of the lubricating system can be guaranteed.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic structural diagram of a top view of the present invention.

FIG. 3 is a schematic diagram of the power end lubrication system of the present invention.

FIG. 4 is a top view of the power end lubrication system of the present invention.

FIG. 5 is a side view of the power end lubrication system of the present invention.

Fig. 6 is a structural schematic diagram of the water curtain cooler of the present invention.

Fig. 7 is a schematic structural composition diagram of the water curtain module of the water curtain type cooler of the invention.

FIG. 8 is a schematic of the construction of an AC variable frequency drilling pump of the present invention.

FIG. 9 is a structural schematic in elevation view of an AC variable frequency borehole pump of the present invention.

FIG. 10 is a schematic top view of the AC variable frequency drilling pump of the present invention.

FIG. 11 is a schematic structural diagram of an AC variable frequency borehole pump drive assembly of the present invention.

FIG. 12 is a schematic view of the structure of the AC variable frequency drilling pump driving wheel assembly of the present invention.

Fig. 13 is an enlarged schematic view of B in fig. 12.

FIG. 14 is a schematic structural diagram of a front view of a permanent magnet variable frequency borehole pump according to the present invention.

FIG. 15 is a schematic structural diagram of a top view of the permanent magnet variable frequency drilling pump of the present invention.

FIG. 16 is a schematic structural diagram of a permanent magnet variable frequency drilling pump transmission assembly of the present invention.

FIG. 17 is a schematic structural view of the driving wheel assembly of the permanent magnet variable frequency drilling pump of the present invention.

Fig. 18 is an enlarged schematic view of a structure at a in fig. 17.

Fig. 19 is a schematic structural view of the case of the present invention.

FIG. 20 is a schematic structural view of the power end assembly of the present invention.

Fig. 21 is an assembly schematic of the crosshead structure of the present invention.

FIG. 22 is a schematic diagram of the construction of the fluid end assembly of the present invention

The labels in the figure are: 1-transmission assembly, 11-motor module, 12-driving wheel, 13-driven wheel, 14-crankshaft, 15-support bearing, 16-connecting rod, 17-rotating shaft, 18-frame, 19-bearing seat, 110-crank throw, 111-crankcase, 112-motor seat, 2-power end assembly, 21-crosshead box, 22-crosshead structure, 221-slideway shell, 223-telescopic rod, 222-crosshead hinge, 23-crosshead cavity, 24-box cover plate, 25-cylinder cavity, 26-front wall plate, 3-hydraulic end assembly, 31-hydraulic end frame, 32-piston cylinder, 33-piston rod, 34-piston head, 35-bolt, 36-cylinder sleeve bolt, 37-pressing plate, etc, 38-gland locking disk, 39-cylinder sleeve nut, 310-positioning pin shaft, 311-cylinder sleeve withdrawing disk, 312-suction pipe orifice, 313-valve assembly, 314-suction cavity, 315-discharge pipe orifice, 316-discharge cavity, 317-end flange resistant, 318-limiting block, 319-wear-resistant disk, 4-base, 5-power end lubricating system, 51-pry seat, 52-lubricating oil pump, 521-oil pump oil inlet, 522-oil pump oil outlet, 53-filter, 531-filter oil inlet, 532-filter oil outlet I, 533-filter oil outlet II, 54-cooler 541, cooler oil inlet, 542-cooler oil outlet, 543-motor, 544-radiating blade, 55-temperature control switch, 56-suction pipe orifice, 57-oil discharge pipe orifice, 58-oil overflow pipeline, 6-hydraulic end lubricating system, 7-water curtain module, 71-shell, 711-cooling water inlet, 72-heat dissipation water curtain wall, 73-water inlet water distribution pipe, 74-water outlet, 75-water accumulation tank, 8-heat exchange module, 9-hoisting frame mechanism and 10-jigger.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features. 1

Example 1

A high-power five-cylinder drilling pump group is shown in figures 1 to 22 and comprises a base 4, wherein a drilling pump and a lubricating system are arranged on the base, the drilling pump comprises a transmission assembly 1, a power end assembly 2 and a hydraulic end assembly 3, the lubricating system comprises a power end lubricating system 5 for lubricating and cooling the transmission assembly 1 and the power end assembly 2 and a hydraulic end lubricating system 6 for lubricating and cooling the hydraulic end assembly 3;

the power end lubricating system 5 comprises a prying seat 51, a lubricating oil pump 52 and a filter 53 which is used for filtering lubricating oil and communicated with the lubricating oil pump 52 are arranged on the prying seat, the filter 53 is communicated with a drilling pump and is communicated with a cooler 54 used for cooling lubricating oil, the filter 53 is provided with a temperature control switch 55, and the lubricating oil is controlled by the temperature control switch 55 to enter the drilling pump for lubricating and cooling or enter the cooler 54 for cooling after coming out of the filter 53.

In the embodiment, on the basis of the design of the drilling pump, the structural design of the cooling system is carried out on the whole drilling pump group, in the design, each unit is designed as an independent and separated unit, the whole structure can be effectively compact, the structure is simplified, as a specific effect description, in field application, the structure is simpler, the occupied space is smaller, and the obtained advantages are more obvious compared with the traditional structure.

On the basis of the design of the specific structure, as a more specific design, the power end lubricating system 5 adopts air cooling or water cooling.

As a more specific design of the lubrication system, in a specific embodiment, as a more specific design, the power end lubrication system 5 includes a suction pipe orifice 56 and an oil discharge pipe orifice 57, the lubricating oil pump 52 is provided with an oil pump oil inlet 521 and an oil pump oil outlet 522, the suction pipe orifice 56 communicates with the oil pump oil inlet 521, and the oil discharge pipe orifice 57 communicates with the drill pump;

the filter 53 is provided with a filter oil inlet 531, the filter oil inlet 531 is communicated with the oil pump oil outlet 522, the filter 53 is further provided with a filter oil outlet one 532 and a filter oil outlet two 533, the filter oil outlet one 532 is communicated with the cooler 54 for cooling lubricating oil, and the filter oil outlet two 533 is communicated with the oil drain pipe opening 57 for sending lubricating oil into the drill pump.

In the design of this structure, the main design purpose is to effectively achieve the cooling effect of the lubricating oil, in a specific application, the temperature of the lubricating oil after the cooling is not satisfied, the structure is to continuously cool the lubricating oil, and the most important function is not only to maintain the lubricating effect, but also to require the specific cooling effect of the supplier.

On the basis of the design of the specific structure, the cooler is further optimally designed, the cooler 54 is provided with a cooler oil inlet 541 and a cooler oil outlet 542, the cooler oil inlet 541 is communicated with the filter oil drain port 532, and the cooler oil outlet 542 is communicated with the oil drain pipe port 57 to realize that the cooled lubricating liquid enters the drill pump. The main purpose of this design is to apply the cooled lubricant directly to the lubrication and cooling of the drilling pump.

As a more specific design, the power end lubrication system 5 is further provided with an oil overflow pipeline 58, the oil overflow pipeline 58 is communicated with the system oil pipeline through an overflow safety valve bank, and the oil pressure is detected through the overflow safety valve bank to control the overflow of the lubricating oil.

On the basis of the design of the specific structure, as more specific description, the power end lubricating system is connected with each friction pair through a pipeline system, sensors such as pressure and temperature are arranged in the pipeline system, and operating parameters such as oil temperature and oil pressure are intelligently detected through an electric control system.

In summary, the power end lubricating system provides lubricating oil with a certain pressure for friction pairs such as a power end bearing, a gear, a crosshead and the like, plays roles of lubricating and cooling, and can take away heat generated by the friction pairs through the lubricating oil.

As a more specific design, the new hydraulic end lubrication system 6 adopts water cooling for cooling and lubrication.

On the basis of the specific structural design, as a more specific design, the base 4 is further provided with a hoisting frame mechanism 9, the hoisting frame is further provided with a small pulley 10, and the small pulley can slide on the hoisting frame. In the following embodiments, the piston cylinder 32 is designed in the fluid end assembly 3, and it is necessary to structurally modify the piston cylinder for lifting when it is assembled into the cylinder chamber 25.

Example 2

As a specific description, on the basis of the design of embodiment 1, as shown in fig. 6 and 7, on the basis of the above specific structural design, as a more specific design, the cooler 54 includes a power module, a heat exchange module 8 and a water curtain module 7, the power module performs cooling by air suction, and the power module includes a motor 543 and heat dissipation fan blades 544 arranged on a rotor of the motor.

In this embodiment, the heat exchange module 8 is designed in a mature manner, and a cooling coil with heat dissipation fins is arranged in the heat exchange module, so that the heat dissipation area is increased. And the power module mainly provides the power of convulsions, realizes that the air can pass through heat exchange module 8 behind the cascade module to realize the cooling of lubricating oil.

As a more specific design, on the basis of the above specific structural design, the water curtain module 7 is further designed, and includes a housing 71, a heat dissipation water curtain wall 72, a water inlet diversion pipe 73, a water outlet 74, and a water accumulation tank 75, wherein the housing 71 is provided with a cooling water inlet 711, and is connected to a water source through the water inlet diversion pipe 73, and further includes a water diversion device, and water uniformly enters the upper portion of the heat dissipation water curtain wall through the water diversion device.

In this embodiment, the working principle is as follows: after the motor 543 is started, air enters from the heat-dissipating water curtain wall 72 and then passes through the heat exchange tube of the heat exchange module 8 to take away heat. When the heat dissipating curtain wall 72 is connected to a water source, the surfaces of the curtain wall are wetted and a film of water is formed on the outer surfaces. When external hot air passes through the water curtain, moisture on the surface of the water curtain wall can be quickly evaporated to absorb heat, and inlet air is cooled. The temperature of the air entering the heat exchange module 8 is greatly reduced, and the temperature difference between the air and the liquid to be cooled is increased, so that the heat exchange efficiency and the cooling effect of the cooler are improved. The heat dissipation water curtain wall 72 is kept moist, evaporation and water supply are kept balanced, therefore, the required water flow is very small, when the ambient temperature is higher (more than 35 ℃), the water curtain module 7 can reduce the air temperature entering the cooler 5 by about 8-10 ℃ through rapid evaporation of moisture, the heat exchange efficiency of the cooler in the high-temperature environment can be effectively improved, the lubricating oil temperature of the power end lubricating system can be effectively controlled in the high-temperature environment, the reliable work of the lubricating system can be ensured, meanwhile, the water curtain module is only used when the lubricating oil temperature is higher (more than 35 ℃) and cannot be effectively controlled in a lower range, long-term water source supply work is not needed, a large amount of water resources can not be used, and the working reliability of the lubricating system in the high temperature can be economically and effectively solved.

Example 3

Based on the design of the embodiments 1 and 2, the design structure of the borehole pump is embodied, as a specific design, as shown in fig. 8 to 22, the transmission assembly 1 includes a motor module 11, a transmission mechanism and a crank link mechanism, the motor module 11 is connected and assembled with the crank link mechanism through the transmission mechanism, and the movement of the crank link mechanism is realized through the motor module 11;

the power end assembly 2 comprises a plurality of power units, each power unit is assembled and connected to the crank-link mechanism, the other end of each power unit is independently assembled with one piston mechanism of the hydraulic end assembly 3, and the hydraulic end assembly 3 is driven by the power end assembly 2.

In this embodiment, the drilling pump is designed in a modular manner, and the modular design is adopted for the transmission assembly 1, the power end assembly 2 and the hydraulic end assembly 3, so that the whole structure can be effectively simplified, and the whole structure has a better space simplification effect. Meanwhile, in the aspect of maintenance of the whole equipment, the structural design has the advantage of convenience in maintenance, and better effect is achieved in the aspect of working efficiency.

Based on the above design of the specific structure, as a further design, specific optimization and design are performed on the transmission assembly, in another specific embodiment, the transmission assembly 1 includes a frame 18, a motor module 11 is disposed on the frame 18, the transmission mechanism includes a driving wheel 12 disposed on the motor module 11, and a driven wheel 13 for driving a crank-link mechanism, the crank mechanism includes a crankshaft 14, the crankshaft is disposed with the driven wheel 13, and the crankshaft 14 is equipped with a plurality of support bearings 15 and a plurality of links 16. In the design, the crank-link mechanism is driven by the motor module through the transmission mechanism to serve as a power output part of the whole device.

As a more specific design, on the basis of the above specific structure, as a more specific design, driving wheels 12 are disposed on two sides of the motor module 11, driven wheels 13 are disposed on two ends of the crankshaft, the motor module 11 controls 2 driving wheels 12 to rotate synchronously, and the driving wheels 12 cooperate with the driven wheels 13 to realize rotation of the crankshaft 14. In the design, the problem of complex structure caused by belt transmission and chain transmission can be effectively solved through the structural design that the driving wheel 12 directly drives the driven wheel. As more specific description, the design of the structure effectively realizes the modularized design of the whole transmission assembly, and can realize the integration of the whole part, thereby being convenient for installation and transportation and reducing parts.

On the basis of the design of the above specific structure, as a specific description, a specific design is performed on the frame 18, the frame 18 includes a crankcase 111, the crankcase 111 is provided with a motor base 112, and two sides of the motor base 112 are provided with bearing seats 19 for assembling a motor rotating shaft. In this structural design, the motor base 112 is used for designing the motor module, and meanwhile, in the assembly position, a connecting block for preventing inclination is further provided, and the motor is fixedly assembled with the connecting block after being assembled. And the structure of the crankcase 111 is applied to the assembly of the crankshaft connecting structure.

On the basis of the design of the specific structure, as a more specific design, two sides of the motor module 11 are provided with rotating shafts 17, and two ends of each rotating shaft 17 are fixedly provided with driving wheels 12.

As to the driving wheel 12 assembled on the rotating shaft 17, as a specific description, in this embodiment, the driving wheel 12 is fixedly assembled on the rotating shaft 17 to realize the synchronous rotation of the driving wheel 12 and the rotating shaft 17, and a better design is adopted, and the driving wheel 12 is assembled on the rotating shaft 17 in an interference fit manner.

While in the interference fit, the specific embodiment thereof has a different mode, as a more preferable structure, the driving wheel 12 has a tapered inner hole, the end of the rotating shaft 17 is a tapered column, and the assembly of the tapered inner hole and the tapered column is realized by the interference fit, so as to facilitate the disassembly of the driving wheel 12. The design of this structure has more the convenience of maintaining, in case have not hard up when dismantling then can the effectual dismantlement that realizes action wheel 12.

On the basis of the design of the specific structure, and as the specific design of the rotating shaft, as specific, the rotating shaft 17 is of an integral structure, or the rotating shaft is of a split structure, and synchronous rotation is realized under the action of the motor module. In the present structural design, the rotating shaft 17 is preferably of a one-piece structure. Namely: the driving wheel 12 is coaxially arranged. In particular, in order to ensure the rotation of the crankshaft 14, even if the design is a split structure, i.e. the driving wheel 12 is connected with a rotating shaft, the specific requirements are as follows: the rotation of the 2 driving wheels 12 is synchronous rotation.

Based on the design of the above specific structure, the crank link mechanism is deeply designed, and as a more specific, the crankshaft 14 is provided with a plurality of crank throws 110, the crankshaft 14 is fixedly assembled on the frame 18 through a plurality of support bearings 15, the crank throws 110 are located between two adjacent support bearings 15, and the connecting link 16 is assembled on the crank throws. In the field of engines, a big-end and small-end connecting rod is assembled at the crank throw 110 to achieve the driving effect, the big end of the connecting rod 16 is assembled on the crank throw, and the other end of the connecting rod is connected with a driven component.

As a more specific design, the number of the support bearings 15 is 6, and the number of the bell cranks 110 is 5. In the design, the structure is designed to be a 5-cylinder structure. The traditional structure is mostly 3 cylinders, and the difference is based on the whole structure, the structure is simpler and more modular, the traditional structure is larger than equipment and complex, and the design of the cylinder body has substantial difference.

The crankshaft 14 is forged from alloy steel for specific design of the crankcase 111 and specific crank connecting rod configuration. The crankshaft 14 is composed of six journals and five cranks 110, and 6 support bearings are mounted and fixed on six support bearing seats. The 6 support bearing seats adopt integral crankshaft bearing seats, one bearing seat on one side (preferably the leftmost side) adopts a positioning spigot design, after the crankshaft 14 is firstly hot-assembled with the bearing inner ring and the retainer, the support bearing seats are integrally hung from the selected side, and the installation precision is high and the reliability is high. The crankshaft support structure of the five-cylinder drilling pump adopts a 6-point support beam structure, and compared with a two-point support simply supported beam structure of a conventional drilling pump, the five-cylinder drilling pump has the advantages that the stress of a main bearing is smaller, the service life is longer, and the maintenance cost of a customer is effectively reduced.

On the basis of the design of the specific structure, the specific assembly design is performed on the driving wheel 12 and the driven wheel 13, and the specific structure mode comprises the following modes:

1. the driving wheel 12 and the driven wheel 13 are in transmission in a bevel gear meshing mode;

2. and the driving wheel 12 and the driven wheel 13 are in straight tooth meshing for transmission.

As a specific description, in the design of the engagement method, it is more preferable to adopt a first method of engaging with helical teeth. The design of this structure has more stability, especially on transmission effect, and its life also has better improvement.

As a more specific design, on the basis of the gear engagement, as a specific action effect thereof, the diameter of the driving wheel 12 is smaller than that of the driven wheel 13 to achieve a speed reduction effect.

On the basis of the above specific structure, as a more specific description, the motor module 11 is of an overhead type. Structurally, a single-motor overhead direct-drive structure is adopted, the motor is arranged above the frame, and the driving wheel 12 is directly and thermally arranged on two sides of the motor shaft through conical surfaces, so that the drilling pump is simple in structure, the size in the width direction is reduced, and the transportation requirement is met.

In this embodiment, as a more specific design, as shown in fig. 7 to 11, the motor module 11 is a permanent magnet integrated motor.

The motor and the frequency converter are integrally designed, the VFD room is omitted, the permanent magnet motor is directly driven, and the motor has the characteristics of high efficiency, energy conservation, low manufacturing cost and low transportation cost. The power factor is improved from about 0.83 to 0.95 and above; the rated efficiency is improved from about 0.91 to about 0.968. The permanent magnet motor has smaller current and smaller copper consumption, and the rated current is reduced by about 350A under the same power. The structure is flexible, the volume is small, and the reliability is high. The permanent magnet machine depends on a permanent magnet, the rotor does not generate heat, and only the stator needs to be cooled by water. Compared with a variable-frequency asynchronous motor, the energy is saved by more than 10%, and the operation cost of a client is greatly reduced.

Example 4

On the basis of the design of the embodiment 1, the design of the motor is different from that of the embodiment 1 in that, as shown in fig. 1 to 6, the motor module 11 is an alternating current variable frequency motor. More preferably, the motor module is a three-phase squirrel cage asynchronous motor.

In the embodiment, the alternating-current variable-frequency motor is directly driven, and the transmission efficiency is improved by about 3% -5% compared with that of the traditional structure; the performance parameters of the alternating-current variable-frequency motor are matched to meet the use requirement of the drilling pump, and the alternating-current variable-frequency motor is manufactured according to an electromechanical integration design, so that the motor has long service life, high reliability and high stability, and is convenient and rapid to maintain on site. The motor fully utilizes the constant power section to realize the output of ultra-large displacement. The maximum displacement of the direct-drive drilling pump is 1.2-1.5 times of the displacement of the drilling pump at the same level

Example 5

On the basis of the design of embodiment 1, as the assembly between the driving wheel 12 and the rotating shaft 17 is different, the present embodiment does not adopt an interference fit manner, specifically, the driving wheel 12 is fixedly assembled on the rotating shaft 17 through a key connection.

As a specific description, the structure of the present embodiment can also achieve the effect of disassembly, but during the rotation of the rotor, the structure is a key as a component subjected to torque force, and although the effect can be achieved, the service life is the effect of not being able to effectively achieve the interference fit of the tapered surface.

Example 6

On the basis of the design of embodiment 1, the interference fit design mode is also adopted between the driving wheel 12 and the rotating shaft 17, and the difference is that specifically, the driving wheel 12 is provided with a cylindrical inner hole, the end part of the rotating shaft 17 is a circular column, and the assembly of the cylindrical inner hole and the circular column is realized through the interference fit.

In this embodiment, the interference fit effect of the conventional shaft hole of adoption and axle, its can the comparatively balanced function of effectual realization effort in specific effect, but can cause the damage of axis of rotation or action wheel dismantling the in-process, also prolonged the time of dismantling simultaneously, be unfavorable for the efficiency of maintaining.

Example 7

On the basis of the above-mentioned embodiments, a more specific design is made for the power end assembly, as shown in fig. 12 to 14, the power end assembly 2 includes a crosshead case 21, the crosshead case 21 is provided with a plurality of crosshead cavities 23 for assembling crosshead structures 22, the crank-link mechanism is provided with a plurality of connecting rods 16, each connecting rod 16 is connected and assembled with a corresponding crosshead structure 22, and the crosshead structures 22 can realize linear reciprocating motion under the acting force of the connecting rods 16.

In the present embodiment, as a specific description, in order to better implement the design of the whole structure, after the crosshead structure 22 is assembled and connected with the connecting rod 16, since the connecting rod 16 moves in a reciprocating manner, the crosshead structure 22 can implement its movement as a linear reciprocating movement, thereby effectively implementing the driving effect.

Based on the above-described specific structure, as a more specific design, the crosshead case 21 is further provided with a case cover plate 24 for covering the crosshead chamber 23.

On the basis of the design of the above-described specific structure, the crosshead case 21 is further provided with a case cover plate 24 for covering the crosshead chamber 23 in the specific structure, in consideration of the use environment thereof.

In the present embodiment, as a general application, the case cover 24 is specifically described, and the case cover 24 is a unitary structure.

On the basis of the design of the connecting structure, as a more specific description and a detailed description, the front end of the crosshead case 21 is provided with a crankcase 111 for assembling a crank link mechanism, a motor base 112 is arranged above the crankcase 111, bearing seats 19 for assembling a motor rotating shaft are arranged on two sides of the motor base 112, the end of the crosshead case 21 for assembling the hydraulic end assembly 3 is provided with a cylinder chamber 25, and the end of the cylinder chamber 25 is provided with a front wall plate 26 for connecting the hydraulic end assembly 3. Specifically, in the design of the whole structure, the whole power end assembly 2 is formed into an integral module, and after the modules are fixedly assembled, the whole structure is effectively compacted, and the volume of the drilling pump is reduced better.

Example 8

On the basis of the design of embodiment 5, as a more specific design, the design is different from that of embodiment 5 in the structural design of the box cover plate, and as a specific description, the box cover plate 24 is a split structure, the box cover plate includes a plurality of cover plate units, and each crosshead chamber is provided with one cover plate unit, so as to improve the efficiency of equipment maintenance.

In this embodiment, the conventional drill pump is a one-piece cover plate structure, and the crosshead structure 22 can only be removed from the side opening, and if the crosshead structure 22 of the middle cylinder is removed, the crosshead structures 22 of the two side cylinders must be removed. Comparative tests conducted in an assembly plant have shown that similarly disassembling and assembling an intermediate cylinder crosshead structure 22 requires 10 hours for 3 masters of a conventional drill pump, while 3 hours for 2 masters of a five cylinder drill pump are required in this design. The independent upper opening type crosshead box body greatly shortens the maintenance time of a client. As a more specific structure design, the crosshead structure 22 includes a chute housing 221 forming a chute, a telescopic rod 223 is disposed inside the chute housing 221, and the telescopic rod 223 is used for connecting an end of the connecting rod 16 and the connecting rod 16 to be hinged through a cross hinge 222, so as to change the moving direction.

Example 9

Based on the design of the above embodiment, the design of the fluid end assembly is specifically designed, as shown in fig. 15, the fluid end assembly 3 includes a fluid suction module, a fluid discharge module, and a piston mechanism connected to the power end assembly, and the suction and discharge of the fluid are controlled by the movement of the piston mechanism;

the liquid suction module sucks liquid in the state that the piston mechanism is contracted;

the liquid discharge module discharges liquid in a state where the piston mechanism is advanced.

In the design of the structure, the reciprocating motion of the piston mechanism is used as the design of the hydraulic end assembly, the liquid can be effectively fed and discharged based on the design of the suction module and the discharge module, and as a special description, the structure can effectively complete the circulation of the drilling fluid of the whole structure. Meanwhile, the whole structure also needs to be designed in a modular structure.

Specifically, on the basis of the design of the above specific structure, in one specific embodiment, the hydraulic end assembly 3 includes a hydraulic end frame 31, the piston mechanism includes a piston cylinder 32 assembled on the hydraulic end frame, a piston rod 33 located inside the piston cylinder 32 and a piston head 34 arranged at an end of the piston rod, and the other end of the piston rod 33 is assembled with the power end assembly 2 to implement the operation of the piston mechanism. In the design of the structure, the structure does not need to consider the assembly with a front end device, and also needs to consider the assembly of the structure, particularly the structure is designed in a modularized way, and the main purpose of the structure is to better realize the simplification and the compaction of the structure. As a more specific design, the piston rod 33 is connected to the crosshead structure by a clip.

As a more specific design, based on the design of the above specific embodiment, the end of the power end assembly 2 for assembling the hydraulic end assembly is provided with a cylinder chamber 25, and the end of the cylinder chamber 25 is provided with a front wall plate 26 for connecting the hydraulic end assembly 3.

As a more specific structural design, the piston mechanism may be assembled in the cylinder chamber 25 to facilitate the assembly of the piston mechanism with the power end assembly 2.

Based on the design of the specific structure, the hydraulic end frame 31 is assembled with the front wall plate through the bolts 35 to realize the assembly of the whole device. In this design, the bolts 35 are stud bolts. The two ends are tightened by nuts.

In terms of structural design, in order to realize the assembly of the piston cylinder at the end of the hydraulic end frame, as a specific description, the piston cylinder 32 is assembled on the hydraulic end frame 31 through a plurality of cylinder sleeve bolts 36, a pressure plate 37 is further arranged on the piston cylinder 32, and the cylinder sleeve bolts 36 penetrate through the pressure plate 37 and are combined on the hydraulic end frame 31. In the action process, an end flange 317 is arranged at the end of the piston cylinder 32, the cylinder sleeve bolt 36 is a stud bolt, a limit block 318 is arranged on the piston cylinder 32, the press plate 37 is assembled at the limit block 318 and attached to the limit block 318, and the cylinder sleeve bolt 36 penetrates through the press plate 37 and the limit block 318 and then penetrates through the end flange 317 through threads to be assembled on the hydraulic end frame 31. The front end of the pressure plate 37 is fastened by a liner nut 39.

On the basis of the design of the above specific structure, in order to ensure the assembly effect, specifically, the front end of the pressing plate 37 is provided with a gland locking plate 38, the gland locking plate 38 is positioned through a cylinder sleeve nut 39, the rear end of the gland locking plate 38 is provided with a cylinder sleeve nut 39 for being attached to the pressing plate 37 to realize positioning, and the front end of the gland locking plate 38 is provided with a cylinder sleeve nut 39 to realize that the gland locking plate 38 is positioned between the two cylinder sleeve nuts 39. The assembly effect of the whole device can be further ensured by the mode.

As a more specific design, in order to facilitate disassembly and assembly, a cylinder sleeve disc withdrawing mechanism is arranged at the rear end of the pressing plate 37, the cylinder sleeve disc withdrawing mechanism comprises a positioning pin shaft 310 fixed on the outer side of the piston cylinder 32 and a cylinder sleeve disc 311, the cylinder sleeve disc 311 can axially move along a cylinder sleeve bolt 36, a cylinder sleeve nut 39 is further arranged at the end of the cylinder sleeve disc withdrawing 311, a limiting block 318 is arranged on the piston cylinder 32, the front end of the cylinder sleeve nut 39 is attached to the limiting block 318, and the cylinder sleeve disc withdrawing 311 is fixedly connected with and assembled with the positioning pin shaft 310;

when the cylinder sleeve is disassembled, the cylinder sleeve nut 39 at the front end of the pressure plate 37 is withdrawn for a certain distance or is disassembled, and the cylinder sleeve nut 39 at the rear end of the cylinder sleeve withdrawing disc 311 is screwed to withdraw the piston cylinder 32.

In the structure, the cylinder sleeve nut at the front end is firstly disassembled, after the cylinder sleeve nut 39 at the front end of the pressure plate 37 is withdrawn, the cylinder sleeve nut 39 at the rear end of the cylinder sleeve withdrawing disc 311 is screwed to push the cylinder sleeve withdrawing disc to drive the positioning pin shaft 310 and drive the piston cylinder to withdraw outwards, so that the effect of quick disassembly is realized.

As a more specific design, a wear-resistant disc 319 is further arranged between the piston cylinder 32 and the assembling end face of the hydraulic end frame 31 to improve the service life of the whole device.

In the above specific structural design, the suction module and the discharge module of the fluid end assembly 3 are designed, specifically:

the liquid suction module comprises a suction nozzle 312, a valve assembly 313 and a suction cavity 314, and the opening/closing of the valve assembly is controlled to control the liquid entering from the suction nozzle under the action of a piston mechanism.

The liquid discharge module comprises a discharge nozzle 315, a valve assembly 313 and a discharge cavity 316, the suction cavity 316 is communicated with the discharge cavity 314, and the opening/closing of the valve assembly 313 of the discharge module is controlled under the action of a piston mechanism to control the liquid discharge of the discharge nozzle.

In the above specific structural design, as a specific description of the action, in the design of the valve assembly 313, it can be seen that the valve rod is provided with an elastic component, for better illustration, when the piston is withdrawn, the valve assembly of the suction module is opened upwards under the action of suction force and is filled with liquid, and at the moment, the valve assembly of the discharge module receives downward force and keeps a closed state; when the piston moves forwards, the valve assembly of the suction module receives downward thrust due to the internal pressure, the suction module keeps a closed state, and the valve assembly of the discharge module receives upward thrust at the moment, so that the valve assembly of the discharge module is promoted to be opened, and the liquid is discharged.

On the basis of combining the above-mentioned embodiment, in order to facilitate the hoist and mount of whole borehole pump, on the concrete structure, still include the lug that is used for hoist and mount. Specifically, the direct-drive drilling pump is small in size and light in weight, is suitable for being installed in a land pump room, an ocean drilling platform and a transportation trailer, and can be used for hoisting by a helicopter.

Example 10

A solid control system comprising a high capacity five cylinder drilling pump package according to any one or combination of embodiments 1 to 9.

Example 11

A drilling rig comprising a high power five cylinder drilling pump package according to any one or combination of embodiments 1 to 9.

In summary, the following steps:

1. the high-power five-cylinder drilling pump set realizes modular design on the design of the whole structure, can effectively solve the problem of larger structure of the traditional drilling pump or drilling pump set on the spatial layout of the structure, solves the problem of complicated structure caused by intermediate mechanical variable transmission mechanisms such as belt transmission, chain transmission and the like on the basis of the traditional structural design, and effectively realizes the optimization effect of the whole structure.

2. Based on the design of the motor, the structure that the single motor is arranged in the overhead and directly driven is adopted structurally, the motor is arranged above the frame, and the pinion is directly and thermally arranged on two sides of the motor shaft through the conical surfaces, so that the structure of the drilling pump is simple, the size in the width direction is reduced, and the transportation requirement is met.

3. Compared with a three-cylinder drilling pump, the discharge flow and the pressure fluctuation of the five-cylinder design adopted by the invention are reduced by 16.5%, and the pressure fluctuation under high pressure is only 2% -3%.

4. In the design of a cooling system, a water curtain type air cooler with special design is adopted in the lubricating and cooling system, when the ambient temperature is higher (higher than 35 ℃), the water curtain module can reduce the temperature of air entering the cooler by about 8-10 ℃ through rapid evaporation of moisture, the heat exchange efficiency of the cooler in a high-temperature environment can be effectively improved, the lubricating oil temperature of the system can be effectively controlled by the power end lubricating system in the high-temperature environment, and the reliable work of the lubricating system can be guaranteed.

The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.