阅读说明：本技术 一种可连续工作的五缸压裂泵动力端结构 (Five-cylinder fracturing pump power end structure capable of working continuously ) 是由 宋任波 薛建刚 于 2020-06-02 设计创作，主要内容包括：一种可连续工作的五缸压裂泵动力端结构,包括动力端整体,动力端整体包括机罩壳,机罩壳上设置有输入法兰,机罩壳内部设置有齿轮副、曲轴以及连杆组；齿轮副包括主动齿轮以及与其啮合的从动齿轮,连杆组包括五个结构相同的钢制三段式组合连杆；输入法兰与主动齿轮同轴连接,从动齿轮与曲轴同轴连接,五个钢制三段式组合连杆并排均匀地安装在曲轴上；钢制三段式组合连杆包括尾部带有连杆小头的连杆主体部分、上瓦背、下瓦背以及十字头；本方案设计的可连续工作的五缸压裂泵动力端结构,采用特殊的钢制三段式组合连杆,通过连杆小头与十字头内腔的结构配合,使两者接触面积增大,减小工作发热量和压力,增加压裂泵的工作时间,使效率得到提升。(A power end structure of a five-cylinder fracturing pump capable of working continuously comprises a power end whole body, wherein the power end whole body comprises a machine cover shell, an input flange is arranged on the machine cover shell, and a gear pair, a crankshaft and a connecting rod set are arranged in the machine cover shell; the gear pair comprises a driving gear and a driven gear meshed with the driving gear, and the connecting rod group comprises five steel three-section type combined connecting rods with the same structure; the input flange is coaxially connected with the driving gear, the driven gear is coaxially connected with the crankshaft, and the five steel three-section type combined connecting rods are uniformly arranged on the crankshaft side by side; the steel three-section combined connecting rod comprises a connecting rod main body part with a small connecting rod head at the tail part, an upper tile back, a lower tile back and a crosshead; but five jar fracturing pump power end structures of continuous operation of this scheme design adopt special steel syllogic combination connecting rod, through the structure cooperation of connecting rod microcephaly and cross head inner chamber, make both area of contact increase, reduce work calorific capacity and pressure, increase the operating time of fracturing pump, make efficiency obtain promoting.)

1. The utility model provides a but five jar fracturing pump power end structures of continuous operation which characterized in that: the power end integral type motor generator comprises a power end integral body, wherein the power end integral body comprises a motor housing, an input flange is arranged on the motor housing, and a gear pair, a crankshaft and a connecting rod group are arranged in the motor housing; the gear pair comprises a driving gear and a driven gear meshed with the driving gear, and the connecting rod group comprises five steel three-section type combined connecting rods with the same structure; the input flange is coaxially connected with the driving gear, the driven gear is coaxially connected with the crankshaft, and five steel three-section type combined connecting rods are uniformly arranged on the crankshaft side by side; steel syllogic combination connecting rod includes that the afterbody has the connecting rod main part of the little head of connecting rod, goes up the back of a tile, the back of a tile and cross head down, go up the back of a tile with the back of a tile is installed down the head of connecting rod main part, the little head of connecting rod is cylindrical the cylindrical central part of the little head of connecting rod separately is equipped with first round pin shaft hole, the cross head is cylindric, and is inside hollow, second round pin shaft hole has been seted up to the cross head side, the little head part of connecting rod inserts inside the cross head, the round pin axle is followed the cross head side passes insert behind the second round pin shaft hole inside the first round pin shaft hole.

2. The power end structure of the five-cylinder fracturing pump capable of working continuously as claimed in claim 1, wherein: the head of the main body part of the connecting rod is fixedly mounted with the upper tile back, the upper tile back is fixedly mounted with the lower tile back, a round hole is formed in the middle of the spliced upper tile back and the spliced lower tile back, and the steel three-section combined connecting rod is fixedly mounted on the crankshaft through the round hole.

3. The power end structure of the five-cylinder fracturing pump capable of working continuously as claimed in claim 1, wherein: the bottom of the inner cavity of the crosshead is an arc surface, and when the small end of the connecting rod is inserted into the crosshead, the bottom surface of the small end of the connecting rod is attached to the arc surface; the crosshead inner chamber left and right sides still is provided with two steps that correspond, simultaneously the protruding two clamp plates that are provided with of the little first left and right sides of connecting rod with the step is corresponding.

4. The power end structure of the five-cylinder fracturing pump capable of working continuously as claimed in claim 1, wherein: the whole hood shell is made of special low-alloy quenched and tempered steel.

5. The power end structure of the five-cylinder fracturing pump capable of working continuously as claimed in claim 1, wherein: two arc plate reinforcing ribs which correspond up and down are arranged on the surface of the hood shell.

Technical Field

The invention belongs to the technical field of structural design of a power end of a fracturing pump, and particularly relates to a power end structure of a five-cylinder fracturing pump capable of continuously working.

Background

With the increasing of ultrahigh pressure, ultra-deep wells, horizontal wells and low permeability wells, the difficulty of oil and gas exploitation is getting bigger and bigger, and the problem of stable yield increase can be solved only by large-scale fracturing operation in oil and gas field development. Meanwhile, along with the gradual depletion of conventional oil and gas resources, the exploitation value of unconventional oil and gas resources is improved, the exploitation of the unconventional oil and gas resources represented by shale gas depends on large-scale fracturing construction operation, the fracturing construction operation area is further expanded, and the exploitation of unconventional oil and gas, particularly the single fracturing construction scale of the shale gas, is quite large. Therefore, with the continuous development of deep wells, ultra-deep wells and unconventional oil and gas resources, the fracturing construction operation with high power, high pressure and large discharge capacity is more and more frequent, the fracturing time of a single well is longer and longer, and the large-scale complete fracturing equipment corresponding to the fracturing construction equipment provides higher requirements. The fracturing pump truck is the core equipment of fracturing equipment, and the plunger pump is as the key part of fracturing truck, and its performance and technical level have decisive influence to the whole operational capability of fracturing pump truck to large-scale complete sets fracturing equipment. In particular, in order to adapt to the characteristics of the fact that well sites are mostly on hilly and mountainous regions in China, the road running condition is poor, the well site layout area is small and the like, higher requirements are put forward on a plunger pump which is suitable for vehicle-mounted configuration and has high pressure and large displacement. At present, 2500 type fracturing trucks are the most commonly used and much used fracturing equipment in fracturing operation; the single machine equipment has low discharge capacity under the high pressure operation, and can not work for a long time under the severe working condition; in shale gas operation, dozens of fracturing trucks are required to operate simultaneously to meet the requirement of total discharge capacity in the operation process, so that the simultaneous operation of the trucks occupies a large well site area, and the contradiction between the occupation and the limitation of well site conditions of oil and gas fields is particularly prominent.

Therefore, a power end structure of the five-cylinder fracturing pump capable of continuously working needs to be designed to solve the technical problems.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide a power end structure of a five-cylinder fracturing pump capable of continuously working.

In order to achieve the above objects and other related objects, the present invention provides the following technical solutions: a power end structure of a five-cylinder fracturing pump capable of working continuously comprises a power end whole body, wherein the power end whole body comprises a machine cover shell, an input flange is arranged on the machine cover shell, and a gear pair, a crankshaft and a connecting rod set are arranged in the machine cover shell; the gear pair comprises a driving gear and a driven gear meshed with the driving gear, and the connecting rod group comprises five steel three-section type combined connecting rods with the same structure; the input flange is coaxially connected with the driving gear, the driven gear is coaxially connected with the crankshaft, and five steel three-section type combined connecting rods are uniformly arranged on the crankshaft side by side; steel syllogic combination connecting rod includes that the afterbody has the connecting rod main part of the little head of connecting rod, goes up the back of a tile, the back of a tile and cross head down, go up the back of a tile with the back of a tile is installed down the head of connecting rod main part, the little head of connecting rod is cylindrical the cylindrical central part of the little head of connecting rod separately is equipped with first round pin shaft hole, the cross head is cylindric, and is inside hollow, second round pin shaft hole has been seted up to the cross head side, the little head part of connecting rod inserts inside the cross head, the round pin axle is followed the cross head side passes insert behind the second round pin shaft hole inside the first round pin shaft hole.

Preferably, the head of the main body part of the connecting rod is fixedly mounted with the upper tile back, the upper tile back is fixedly mounted with the lower tile back, a round hole is formed in the middle of the spliced upper tile back and the spliced lower tile back, and the steel three-section type combined connecting rod is fixedly mounted on the crankshaft through the round hole.

Preferably, the bottom of the inner cavity of the crosshead is an arc surface, and when the small end of the connecting rod is inserted into the crosshead, the bottom surface of the small end of the connecting rod is attached to the arc surface; the crosshead inner chamber left and right sides still is provided with two steps that correspond, simultaneously the protruding two clamp plates that are provided with of the little first left and right sides of connecting rod with the step is corresponding.

Preferably, the whole hood shell is made of special low-alloy quenched and tempered steel.

Preferably, the surface of the hood shell is provided with two arc plate reinforcing ribs which correspond up and down.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

1. adopt steel syllogic combination connecting rod, the connecting rod microcephaly designs into cylindrical shape, compare traditional connecting rod, its connecting rod microcephaly diameter grow, the width increases, when the connecting rod microcephaly inserts the cross head inner chamber, area of contact between the two increases, under the same operating mode, realize that connecting rod bearing pressure reduces, the specific pressure reduces, work calorific capacity is little, can make fracturing pump whole increase its operating time at the during operation, keep continuous operation, increase unit equipment discharge capacity, can accelerate work efficiency effectively, avoid many equipment simultaneous workings.

2. The fracturing pump truck adopts special low alloy quenched and tempered steel plate in the whole structure, belongs to high-strength welding structural steel, has higher yield strength and tensile strength, and can ensure that the fracturing pump truck can continuously work for longer time under the severe working condition by adopting the special low alloy quenched and tempered steel.

3. The upper and lower arc plate reinforcing ribs are adopted, so that the shell is firmer and more reliable; compared with cuboid reinforcing ribs at the top of the transmission shell, the upper and lower arc plate reinforcing ribs can enhance the tensile strength of the shell in an effective space, and the continuous work of equipment is ensured.

Drawings

Fig. 1 is a schematic diagram of the internal structure of a power end of a fracturing pump.

Fig. 2 is a schematic view of a crankshaft structure.

FIG. 3 is an exploded view of a three-section type steel connecting rod.

Fig. 4 is a schematic view of the inner cavity structure of the crosshead.

Fig. 5 is a schematic diagram of the overall structure of the power end of the fracturing pump.

In the above drawings, an input flange 1, a gear pair 2, a crankshaft 3, a steel three-section combined connecting rod 4, a connecting rod small end 5, an upper tile back 6, a lower tile back 7, a crosshead 8, a first pin shaft hole 9, a second pin shaft hole 10, an arc surface 11, a step 12, a pressing plate 13, an arc plate reinforcing rib 14 and a pin shaft 15.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1 to 5. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.