阅读说明：本技术 移动式配液系统 (Mobile liquid preparation system ) 是由 吕振虎 邬国栋 阿不都维力·阿不力米提 杨建强 郑苗 陈康 向英杰 于 2018-06-21 设计创作，主要内容包括：本发明提供了一种移动式配液系统,包括：罐体,罐体具有用于容纳物料的容纳腔；搅拌装置,至少部分地设置在容纳腔内,搅拌装置用于搅拌物料；消泡装置,至少部分地设置在容纳腔内,消泡装置用于消除物料产生的泡沫。通过本发明提供的技术方案,能够解决现有技术中的移动式配液系统容易产生泡沫的问题。(The invention provides a mobile liquid preparation system, which comprises: the tank body is provided with a containing cavity for containing materials; the stirring device is at least partially arranged in the accommodating cavity and is used for stirring materials; and the defoaming device is at least partially arranged in the accommodating cavity and is used for eliminating foams generated by the materials. Through the technical scheme provided by the invention, the problem that the mobile liquid preparation system in the prior art is easy to generate foam can be solved.)

1. A mobile liquid dispensing system, comprising:

the tank body (201), the tank body (201) is provided with a containing cavity for containing materials;

a stirring device (100) at least partially disposed within the containment chamber, the stirring device (100) for stirring the material;

a defoaming device (300) at least partially disposed within the receiving cavity, the defoaming device (300) for defoaming foam generated by the material.

2. The mobile liquid dispensing system of claim 1, further comprising:

the containing cavity is divided into a plurality of communicated sub-cavities by the first partition plates (202), the stirring devices (100) are multiple, and the first partition plates (202) are arranged between every two adjacent stirring devices (100) and between the stirring devices (100) and the defoaming device (300).

3. A mobile liquid distribution system according to claim 2, wherein the first partition (202) has a smaller vertical dimension than the receiving chamber, and two adjacent first partitions (202) are connected to the top wall and the bottom wall of the receiving chamber, respectively.

4. A mobile liquid distribution system according to claim 1, wherein the stirring device (100) comprises:

the first stirring part (120) is used for stirring the materials, and the first stirring part (120) is rotatably arranged in the accommodating cavity;

the second stirring part (130) is used for stirring the materials, the second stirring part (130) is rotatably arranged in the accommodating cavity, and the rotating direction of the second stirring part (130) is different from that of the first stirring part (120).

5. A mobile liquid dispensing system according to claim 4,

the first stirring part (120) comprises a first rotating shaft (121) and a first blade assembly (122) arranged on the first rotating shaft (121);

the second stirring part (130) includes a second rotation shaft (131) and a second blade assembly (132) provided on the second rotation shaft (131);

the axis of the first rotating shaft (121) is coincident with the axis of the second rotating shaft (131), or an included angle is formed between the axis of the first rotating shaft (121) and the axis of the second rotating shaft (131).

6. The mobile liquid distribution system according to claim 5, wherein the axis of the first rotating shaft (121) coincides with the axis of the second rotating shaft (131), the first rotating shaft (121) is of a cylindrical structure, and at least a part of the second rotating shaft (131) penetrates through the first rotating shaft (121).

7. The mobile liquid distribution system according to claim 4, wherein the stirring device (100) further comprises a transmission part (140), the transmission part (140) is used for driving the first stirring part (120) and the second stirring part (130) to rotate, and the transmission part (140) comprises:

a sun gear (141) which is in driving connection with the second stirring section (130);

a planetary gear (142) meshed with the sun gear (141);

the inner gear ring (143) is meshed with the planet wheel (142), and the inner gear ring (143) is in driving connection with the first stirring part (120).

8. The mobile liquid dispensing system of claim 5, wherein the first vane assembly (122) comprises:

a disc (1222) sleeved on the first rotating shaft (121);

a plurality of stirring blades (1221), and a plurality of stirring blades (1221) are arranged on the disk (1222) at intervals.

9. A mobile liquid dispensing system according to claim 4, wherein the stirring device (100) further comprises:

the transmission part (140), the transmission part (140) is used for driving the first stirring part (120) and the second stirring part (130) to rotate;

and the driving part (160) is in driving connection with the transmission part (140).

10. The mobile liquid dispensing system of claim 1, wherein the bubble removal device (300) comprises:

a third rotating shaft (301) rotatably arranged in the accommodating cavity;

and the defoaming paddle (302) is arranged on the third rotating shaft (301).

11. The mobile liquid distribution system of claim 10, wherein the defoaming paddle (302) is provided in plurality, and the defoaming paddles (302) are arranged at intervals along the circumferential direction and/or the axial direction of the third rotating shaft (301).

12. The mobile liquid distribution system of claim 10, wherein the defoaming paddle (302) has a plurality of tapered through holes spaced apart.

13. The mobile liquid dispensing system of claim 1, further comprising:

the second baffle (203) is arranged between the defoaming device (300) and the liquid outlet of the tank body (201), the second baffle (203) is connected with the top wall of the accommodating cavity, a gap is reserved between the second baffle (203) and the bottom wall of the accommodating cavity, and a plurality of conical through holes are formed in the second baffle (203) at intervals.

14. The mobile liquid distribution system according to claim 1, wherein the tank (201) is of a cylindrical or rectangular structure, the liquid inlet and the liquid outlet of the tank (201) are respectively located at two ends of the tank (201) in the length direction, the stirring devices (100) and the defoaming devices (300) are both arranged at the upper part of the tank (201), the stirring devices (100) are multiple, and the stirring devices (100) and the defoaming devices (300) are arranged at intervals in the length direction of the accommodating cavity.

15. The mobile liquid dispensing system of claim 1, further comprising:

the feeding device is communicated with the liquid inlet of the tank body (201);

one end of the backflow device (500) is communicated with a liquid outlet of the tank body (201), and the other end of the backflow device (500) is communicated with the feeding device.

16. A mobile liquid dispensing system according to claim 15, wherein the supply means comprises:

a first outlet of the safety valve (401) is communicated with a liquid inlet of the tank body (201), and the other end of the backflow device (500) is communicated with an inlet of the safety valve (401);

a first pump body (402) communicating with an inlet of the safety valve (401), the first pump body (402) being for supplying powder;

a second pump body (403) communicating with an inlet of the relief valve (401), the second pump body (403) being for supplying a liquid.

17. A mobile liquid distribution system according to claim 16, wherein the safety valve (401) has a second outlet, which is openable at a predetermined pressure, the mobile liquid distribution system further comprising:

the liquid drainage device (600) is communicated with the liquid outlet of the tank body (201), and the second outlet is communicated with the liquid drainage device (600).

18. A mobile liquid distribution system according to claim 16, wherein the return device (500) comprises a third pump body, the supply device further comprising:

a powder tank (404) in communication with the first pump body (402), the powder tank (404) for storing and supplying powder;

and the grinding pump (405) is arranged on a pipeline for communicating the safety valve (401) with the tank body (201).

Technical Field

The invention relates to the technical field of chemical machinery, in particular to a mobile liquid preparation system.

Background

The hydraulic fracturing is an important technical measure for yield increase and transformation of oil and gas wells, and the demand for the hydraulic fracturing is increased along with the development of low-permeability and low-grade oil and gas reservoirs. The key of success or failure of the fracturing operation depends on the quality of the fracturing fluid to a great extent, and the main ways of improving the quality of the fracturing fluid are to improve the performance of a thickening agent and improve a fluid preparation process. Unconventional large-scale fracturing enables the preparation mode of the fracturing fluid to be changed from a fixed station liquid preparation mode to a mobile liquid preparation mode, and higher requirements are made on the quality of the fracturing fluid.

Disclosure of Invention

The invention provides a mobile liquid preparation system, which aims to solve the problem that foam is easily generated in the mobile liquid preparation system in the prior art.

In order to solve the above problems, the present invention provides a mobile liquid dispensing system, comprising: the tank body is provided with a containing cavity for containing materials; the stirring device is at least partially arranged in the accommodating cavity and is used for stirring materials; and the defoaming device is at least partially arranged in the accommodating cavity and is used for eliminating foams generated by the materials.

Further, the mobile liquid distribution system further comprises: a plurality of first baffles, a plurality of first baffles will hold the chamber and separate for the minute cavity of a plurality of intercommunications, and agitating unit is a plurality of, all is provided with first baffle between two adjacent agitating unit and between agitating unit and the fire fighting equipment.

Further, the size of the first partition plate in the vertical direction is smaller than that of the accommodating cavity, and two adjacent first partition plates are respectively connected with the top wall and the bottom wall of the accommodating cavity.

Further, the stirring device includes: the first stirring part is used for stirring materials and can be rotatably arranged in the accommodating cavity; the second stirring portion is used for stirring materials, the second stirring portion is rotatably arranged in the accommodating cavity, and the rotating direction of the second stirring portion is different from that of the first stirring portion.

Further, the first stirring part comprises a first rotating shaft and a first blade assembly arranged on the first rotating shaft; the second stirring part comprises a second rotating shaft and a second blade assembly arranged on the second rotating shaft; the axis of the first rotating shaft is superposed with the axis of the second rotating shaft, or an included angle is formed between the axis of the first rotating shaft and the axis of the second rotating shaft.

Furthermore, the axis of the first rotating shaft coincides with the axis of the second rotating shaft, the first rotating shaft is of a cylindrical structure, and at least one part of the second rotating shaft penetrates out of the first rotating shaft.

Further, agitating unit still includes transmission portion, and transmission portion is used for driving first stirring portion and second stirring portion and rotates, and transmission portion includes: the sun wheel is in driving connection with the second stirring part; a planet gear meshed with the sun gear; and the inner gear ring is meshed with the planet gear and is in driving connection with the first stirring part.

Further, the first leaf assembly comprises: the disc is sleeved on the first rotating shaft; a plurality of stirring leaves, a plurality of stirring leaves interval sets up on the disc.

Further, the stirring device further comprises: the transmission part is used for driving the first stirring part and the second stirring part to rotate; and the driving part is in driving connection with the transmission part.

Further, the defoaming device includes: the third rotating shaft is rotatably arranged in the accommodating cavity; and the defoaming paddle is arranged on the third rotating shaft.

Further, the defoaming oar is a plurality of, and a plurality of defoaming oar sets up along the circumferencial direction and/or the axial interval of third pivot.

Furthermore, a plurality of conical through holes are arranged on the defoaming paddle at intervals.

Further, the mobile liquid distribution system further comprises: the second baffle sets up between the liquid outlet of the defoaming device and jar body, and the second baffle is connected with the roof that holds the chamber, and the second baffle has the clearance with holding between the diapire in chamber, and the interval is provided with a plurality of toper through-holes on the second baffle.

Further, the jar body is tube-shape or cuboid structure, and the inlet and the liquid outlet of the jar body are located the length direction's of the jar body both ends respectively, and agitating unit and fire fighting equipment all set up on the upper portion of the jar body, and agitating unit is a plurality of, and a plurality of agitating unit and fire fighting equipment set up along the length direction interval that holds the chamber.

Further, the mobile liquid distribution system further comprises: the feeding device is communicated with the liquid inlet of the tank body; one end of the reflux device is communicated with the liquid outlet of the tank body, and the other end of the reflux device is communicated with the feeding device.

Further, the supply device includes: the first outlet of the safety valve is communicated with the liquid inlet of the tank body, and the other end of the reflux device is communicated with the inlet of the safety valve; the first pump body is communicated with the inlet of the safety valve and is used for supplying powder; and a second pump body communicating with the inlet of the safety valve, the second pump body being for supplying liquid.

Further, the relief valve has a second outlet port that is capable of opening at a predetermined pressure, and the mobile liquid distribution system further includes: and the liquid drainage device is communicated with the liquid outlet of the tank body, and the second outlet is communicated with the liquid drainage device.

Further, the return device includes a third pump body, and the supply device further includes: the powder tank is communicated with the first pump body and is used for storing and supplying powder; and the grinding pump is arranged on a pipeline for communicating the safety valve with the tank body.

By applying the technical scheme of the invention, the tank body, the stirring device and the defoaming device are arranged in the mobile liquid preparation system, wherein the stirring device is used for stirring materials so as to fully mix and disperse the materials, and the defoaming device is arranged so that foam generated by the materials in the tank body can be eliminated through the defoaming device, thereby improving the using effect of the mobile liquid preparation system.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram of a mobile dispensing system according to an embodiment of the present invention;

FIG. 2 shows a partial enlarged view of FIG. 1;

FIG. 3 shows a schematic structural view of the stirring device of FIG. 1;

FIG. 4 shows a schematic structural view of a first blade assembly in a stirring device;

FIG. 5 shows a schematic diagram of the bubble removal apparatus of FIG. 1;

fig. 6 shows a schematic structural view of the second separator in fig. 1.

Wherein the figures include the following reference numerals:

100. a stirring device; 120. a first stirring section; 121. a first rotating shaft; 122. a first blade assembly; 1221. stirring blades; 1222. a disc; 130. a second stirring section; 131. a second rotating shaft; 132. a second blade section; 140. a transmission section; 141. a sun gear; 142. a planet wheel; 143. an inner gear ring; 151. a housing; 152. a cover plate; 153. a nut; 160. a drive section; 201. a tank body; 202. a first separator; 203. a second separator; 300. a defoaming device; 301. a third rotating shaft; 302. defoaming paddles; 401. a safety valve; 402. a first pump body; 403. a second pump body; 404. a powder tank; 405. a milling pump; 500. a reflux device; 600. a liquid discharge device.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 6, an embodiment of the present invention provides a mobile liquid dispensing system, including: the tank 201 is provided with a containing cavity for containing materials; the stirring device 100 is at least partially arranged in the accommodating cavity, and the stirring device 100 is used for stirring materials; and the defoaming device 300 is at least partially arranged in the accommodating cavity, and the defoaming device 300 is used for defoaming generated by the materials.

Use the technical scheme of this embodiment, set up jar body 201, agitating unit 100 and fire fighting equipment 300 in the portable liquid system of joining in marriage, wherein agitating unit 100 is used for stirring the material to make material intensive mixing and dispersion, owing to be provided with fire fighting equipment 300, the foam that the material in jar body 201 produced is eliminated to accessible fire fighting equipment 300, thereby improves the result of use of portable liquid system of joining in marriage. In addition, the height of the liquid level in the tank body 201 can be conveniently judged, and the condition that foam overflows from the tank opening to the ground to cause environmental pollution is avoided. The mobile liquid preparation system can be applied to preparation of fracturing fluid with dry powder guanidine gum as a main thickening agent. The mobile liquid distribution system can realize mobile liquid distribution by adopting a vehicle-mounted mode, and has strong adaptability.

In this embodiment, the mobile liquid distribution system further includes: a plurality of first baffles 202, a plurality of first baffles 202 will hold the chamber and separate for the subchamber of a plurality of intercommunications, and agitating unit 100 is a plurality ofly, all is provided with first baffle 202 between two adjacent agitating unit 100 and between agitating unit 100 and foam breaker 300. So set up and to use a plurality of agitating unit 100 to stir the material respectively in the branch cavity of difference, improve the dispersion and the mixing efficiency of material to improve and join in marriage liquid efficiency.

As shown in fig. 2, the size of the first partition plate 202 in the vertical direction is smaller than that of the accommodating chamber, and two adjacent first partition plates 202 are respectively connected to the top wall and the bottom wall of the accommodating chamber. Thus, the first partition 202 may be spaced from the top or bottom wall of the receiving chamber to ensure the flow of the material. Moreover, two adjacent first partition plates 202 are respectively connected with the top wall and the bottom wall of the accommodating cavity, so that the flowing direction of the materials can be controlled through the blocking action of the first partition plates 202, and the materials can be quickly and sufficiently mixed. The material in this embodiment may be a solid-liquid mixture prepared from a guanidine gum thickener and water. The materials can flow along the U-shaped path through the plurality of first baffle plates 202, so that the solid-liquid mixture can be mixed sufficiently.

In the present embodiment, the stirring device 100 includes: the first stirring part 120 is used for stirring materials, and the first stirring part 120 is rotatably arranged in the accommodating cavity; the second stirring portion 130 is used for stirring the material, the second stirring portion 130 is rotatably disposed in the accommodating cavity, and the rotation direction of the second stirring portion 130 is different from the rotation direction of the first stirring portion 120. Because the rotating direction of the first stirring part 120 is different from that of the second stirring part 130, the flowing direction of the material in the tank 201 can be changed, the mixing and dispersion of the material are accelerated, and the stirring capability of the stirring device is improved.

As shown in fig. 3, the first stirring part 120 includes a first rotating shaft 121 and a first blade assembly 122 provided on the first rotating shaft 121; the second stirring part 130 includes a second rotation shaft 131 and a second blade assembly 132 provided on the second rotation shaft 131; the axis of the first rotating shaft 121 coincides with the axis of the second rotating shaft 131, or the axis of the first rotating shaft 121 and the axis of the second rotating shaft 131 form an included angle. Both ways can achieve that the rotation direction of the first stirring part 120 and the rotation direction of the second stirring part 130 are different.

In this embodiment, the axis of the first rotating shaft 121 coincides with the axis of the second rotating shaft 131, the first rotating shaft 121 is a cylindrical structure, and at least a part of the second rotating shaft 131 passes through the first rotating shaft 121. This makes the rotation directions of the first vane assembly 122 and the second vane assembly 132 opposite to each other, so that the flowing direction of the material in the tank 110 can be changed significantly, the mixing and dispersion of the material can be accelerated, and the structure of the stirring device 100 can be made more compact.

Specifically, the stirring device 100 further includes a transmission portion 140, the transmission portion 140 is used for driving the first stirring portion 120 and the second stirring portion 130 to rotate, and the transmission portion 140 includes: a sun gear 141 drivingly connected to the second stirring section 130; a planetary gear 142 meshing with the sun gear 141; and the inner gear ring 143 is meshed with the planet gear 142, and the inner gear ring 143 is in driving connection with the first stirring part 120. The arrangement can realize the simultaneous reverse rotation of the first stirring part 120 and the second stirring part 130 through the cooperation of the sun gear 141, the planet gear 142 and the annular gear 143. The arrangement has reliable transmission and compact structure.

In this embodiment, the top of the tank 201 has an opening, and the stirring device further includes: a case 151 disposed at the opening; the cover plate 152 is connected to the housing 151, and an installation cavity is formed between the cover plate 152 and the housing 151, and the transmission part 140 is disposed in the installation cavity. The installation and fixation of the transmission part 140 are facilitated by the provision of the housing 151 and the cover plate 152.

In this embodiment, the planetary gear 142 has a nut 153 on the upper portion thereof, and the nut 153 is used in cooperation with an external thread on the rotating shaft of the planetary gear 142, so that the height of the planetary gear 142 can be adjusted to ensure that the planetary gear 142 is fully meshed with the sun gear 141. And then the nut 153 can fix the planet carrier on the cover plate 152 at the lower part of the motor, thereby realizing the movement of the sun gear 141 in the planetary gear transmission, the planetary gear 142 only does self-transmission and does not do revolution, and the inner gear ring 143 is driven to do the movement opposite to the sun gear 141, thereby realizing the coaxial bidirectional rotation.

As shown in fig. 4, the first blade assembly 122 includes: a plurality of stirring vanes 1221, a plurality of stirring vanes 1221 are arranged along the circumferential direction of the first rotating shaft 121 at intervals. The stirring ability to the material can be improved like this through a plurality of stirring leaves 1221 to accelerate the mixture and the dispersion of material. In the present embodiment, the agitating blade 1221 may be provided as a straight blade type blade.

Further, the first vane assembly 122 further includes: and a disk 1222 fitted around the first shaft 121, wherein a plurality of stirring blades 1221 are disposed on the disk 1222 at intervals. Through setting up disc 1222, can effectively disperse the atress of stirring leaf 1221, make the stress point act on the well facet of stirring leaf 1221, and then make agitating unit operation more stable. Further, the disk 1222 is fixed to the first shaft 121 by a square hole, which is convenient for disassembly, maintenance and later replacement. In this embodiment, the disk 1222 may be provided in two semicircular structures, which are aligned and combined together, and then screwed, thereby facilitating disassembly, maintenance and replacement.

In the embodiment, the second vane member 132 is located below the first vane member 122, and the structure of the second vane member 132 is the same as that of the first vane member 122. Providing the second vane member 132 with the same structure as the first vane member 122 can simplify the manufacture of the device.

As shown in fig. 3, the stirring device 100 further includes: the transmission part 140, the transmission part 140 is used for driving the first stirring part 120 and the second stirring part 130 to rotate; and a driving part 160 in driving connection with the transmission part 140. The configuration can drive the first stirring part 120 and the second stirring part 130 to rotate simultaneously through the driving part 160 and the transmission part 140, which can simplify the structure of the stirring device 100 and facilitate the operation. In the present embodiment, the driving part 160 may be provided as a servo motor.

As shown in fig. 5, the bubble removing device 300 includes: the third rotating shaft 301 is rotatably arranged in the accommodating cavity; and a defoaming paddle 302 arranged on the third rotating shaft 301. Therefore, the defoaming paddle 302 can be driven to rotate by the third rotating shaft 301, so that defoaming operation can be performed by the defoaming paddle 302. The defoaming paddle 302 may break the foam by shearing or pressure when rotating, thereby eliminating the foam.

In this embodiment, there are a plurality of defoaming paddles 302, and the plurality of defoaming paddles 302 are arranged along the circumferential direction and/or the axial direction of the third rotating shaft 301 at intervals. Thus, the foam can be eliminated by the plurality of defoaming paddles 302 together, and the treatment efficiency is improved.

As shown in fig. 5, the defoaming paddle 302 is provided with a plurality of tapered through holes at intervals. Thus, the defoaming paddle 302 enters the tapered through-hole when rotating, and the foam is crushed by being pressed in the tapered through-hole due to the change in the diameter of the tapered through-hole. The mode has simple structure and high efficiency. In the present embodiment, the taper of the tapered through hole may be set to 1:2, and the linear velocity of the tapered through hole of two thirds above the defoaming paddle 302 may be set to more than 5m/s when rotating, which may improve the defoaming effect. In an embodiment of the present invention, the arrangement density of the tapered through holes on the defoaming paddle 302 is gradually increased from the connection position of the defoaming paddle 302 and the third rotating shaft 301 to the direction away from the third rotating shaft 301, so that the defoaming effect can be further improved.

As shown in fig. 2 and fig. 6, in this embodiment, the mobile liquid distribution system further includes: the second baffle 203 sets up between the liquid outlet of defoaming device 300 and jar body 201, and second baffle 203 is connected with the roof that holds the chamber, and second baffle 203 has the clearance with holding between the diapire in chamber, and the interval is provided with a plurality of toper through-holes on the second baffle 203. By providing a gap between the second partition 203 and the bottom wall of the receiving chamber, it is possible to ensure that the material having a relatively high density flows from below the second partition 203. Because the density of foam is little, is located the upper portion of jar body 201, through set up a plurality of toper through-holes at the interval on second baffle 203, both can make the material circulation, can eliminate remaining foam again, improve the defoaming effect. The tapered through holes are mainly concentrated on the upper portion of the second barrier 203 because the density of the foam is low and the foam is located on the upper portion of the mixture due to gravity and is crushed during the discharge process to thereby achieve defoaming. The change direction of the inner diameter of the conical through hole from large to small is consistent with the liquid flow direction, namely, foam enters from a large opening and exits from a small opening of the conical through hole.

In this embodiment, jar body 201 is tube-shape or cuboid structure, and the inlet and the outlet of jar body 201 are located jar body 201's length direction's both ends respectively, and agitating unit 100 and fire fighting equipment 300 all set up on jar body 201's upper portion, and agitating unit 100 is a plurality ofly, and a plurality of agitating unit 100 and fire fighting equipment 300 set up along the length direction interval that holds the chamber. The arrangement can ensure that the materials are uniformly mixed and foam is eliminated in the process of flowing from the liquid inlet to the liquid outlet, thereby improving the liquid preparation efficiency and quality. As shown in fig. 1 and 2, the defoaming device 300 is disposed near the liquid outlet to eliminate the foam in the tank 201 as much as possible.

As shown in fig. 1, the mobile liquid distribution system further includes: the feeding device is communicated with the liquid inlet of the tank body 201; one end of the reflux device 500 is communicated with the liquid outlet of the tank 201, and the other end of the reflux device 500 is communicated with the feeding device. The material can be supplied to the tank 201 by a supply device. In the prior art, if the materials prepared by using the mobile liquid preparation system cannot meet the use requirements, the materials can only be discharged and cannot be processed and utilized, so that the waste of the materials is caused. In the embodiment, by providing the backflow device 500, the material that has not been successfully dispensed from the tank 201 can be returned to the feeding device, and then the dispensing process can be performed again. Therefore, the success rate of material preparation can be improved, the waste of materials is reduced, and the production cost is reduced.

Specifically, the supply device includes: a first outlet of the safety valve 401 is communicated with a liquid inlet of the tank 201, and the other end of the backflow device 500 is communicated with an inlet of the safety valve 401; a first pump 402 communicating with an inlet of the safety valve 401, the first pump 402 being for supplying powder; and a second pump body 403 communicating with an inlet of the relief valve 401, the second pump body 403 being for supplying liquid. This allows the powder and the liquid to be supplied separately according to a predetermined ratio by the first pump 402 and the second pump 403, respectively, so as to be mixed. The pressure in the line can be controlled by providing a relief valve 401 to improve safety. Wherein the first pump 402 can suck the powder by generating negative pressure.

Further, the relief valve 401 has a second outlet that can be opened at a predetermined pressure, and the mobile liquid distribution system further includes: and the liquid drainage device 600 is communicated with the liquid outlet of the tank body 201, and a second outlet is communicated with the liquid drainage device 600. The drainage device 600 may be used to drain the formulated material outward. When the pressure in the safety valve 401 is greater than or equal to the preset pressure, the second outlet is opened to discharge the unformulated materials, and the over-high pressure in the pipeline is released, so that the safety of the system is ensured. The safety valve 401 can control the pressure at the front end and the rear end of the mobile liquid distribution system, when the pressure at the front section of solid-liquid mixing is too high to reach the opening pressure of the safety valve 401, the safety valve 401 is automatically opened, the pressure at the front section is removed, and the phenomenon of water backflow is prevented. Backwater refers to water entering the device supplying the powder causing blockage of the powder outlet.

In this embodiment, the recirculation device 500 includes a third pump body, and the supply device further includes: a powder tank 404, which is communicated with the first pump body 402, wherein the powder tank 404 is used for storing and supplying powder; and a grinding pump 405 arranged on a pipeline for communicating the safety valve 401 with the tank 201. Wherein, the third pump body is used for the material backward flow that does not formulate. The grinding pump 405 is used for grinding and mixing the mixture of powder and liquid, so that the powder-in-water mixture is avoided, and the liquid preparation efficiency and quality are improved.

Use the technical scheme of this embodiment, set up jar body 201, agitating unit 100 and fire fighting equipment 300 in the portable liquid system of joining in marriage, wherein agitating unit 100 is used for stirring the material to make material intensive mixing and dispersion, owing to be provided with fire fighting equipment 300, the foam that the material in jar body 201 produced is eliminated to accessible fire fighting equipment 300, thereby improves the result of use of portable liquid system of joining in marriage. In addition, the height of the liquid level in the tank body 201 can be conveniently judged, and the condition that foam overflows from the tank opening to the ground to cause environmental pollution is avoided. The mobile liquid preparation system can be applied to preparation of fracturing fluid with dry powder guanidine gum as a main thickening agent. By adopting the technical scheme of the embodiment, the fracturing fluid can be prepared and used immediately, the fracturing fluid is fully stirred, the quality of the prepared fracturing fluid is improved, foam is effectively inhibited from being generated, and the unqualified fracturing fluid in the tank body can be subjected to backflow circulation and re-preparation.

The technical scheme of the invention is wholly described as follows: the device comprises a dry powder loading device (a powder tank), a liquid distribution tank (a tank body), a plurality of stirrers (stirring devices), a safety valve, a multi-stage spiral grinding pump (a grinding pump), a reflux pump (a third pump body) and a matched pipeline. The dry powder loading device is connected with an injection pump (a first pump body) through an injection pipeline, the injection pump sucks a thickening agent and then is mixed with water sucked by an suction pump (a second pump body) to enter a liquid preparation tank through a safety valve and a multistage grinding pump, the liquid preparation tank is divided into a plurality of cavities by partition plates (the first partition plate and the second partition plate), and the cavities are communicated with one another. The solid-liquid mixture is fully stirred in the liquid preparation tank, and when the liquid in the liquid preparation tank does not reach the standard, the liquid in the tank can be secondarily prepared through the reflux pump and the matched reflux line, so that the performance of the fracturing fluid is improved. When the solid-liquid mixture reaches the standard, the solid-liquid mixture can be injected into the sand mixing truck through the discharge pump and the discharge port.

The liquid distribution tank is arranged into a rectangular body for meeting the vehicle-mounted requirement of the continuous mixing vehicle, and comprises a tank body and an upper cover plate, wherein the upper cover plate is arranged on the upper part of the tank body and mainly plays a role in bearing the load of an upper motor and installing a coaxial bidirectional stirrer. Join in marriage the fluid reservoir and be the cavity that a plurality of communicates each other by the baffle, the cavity can be divided into two main categories according to its function: one is a mixing cavity for mixing dry powder guanidine gum and liquid, and the other is a defoaming cavity for eliminating foam generated in the mixing cavity at the front end of the defoaming cavity by adopting a mechanical defoaming mode.

The partition board of the mixing cavity mainly adopts solid partition boards, and all the cavities are communicated with each other, so that the discharged fluid can form up-and-down circulating flow in the fluid preparation tank in the fluid preparation process, and the fluid flow shape is strictly controlled, thereby obtaining high-speed turbulence and high-speed circulation, eliminating tackifying dead corners in the fluid preparation tank body, and realizing the most effective tackifying.

The defoaming intracavity mainly adopts the bell mouth fretwork baffle to separate, because foam density is little, under the effect of gravity, the foam is located cavity upper portion, and pure liquid is located the cavity lower part, therefore bell mouth fretwork baffle upper portion with join in marriage the fluid reservoir upper cover plate and be connected, the lower part is unsettled can realize in the cavity that pure liquid circulates to follow-up thoughtlessly the intracavity, foam in the defoaming cavity is broken through the vibration of bell mouth formula defoaming oar and is circulated to follow-up thoughtlessly the intracavity through bell mouth fretwork baffle secondary defoaming again.

Defoaming oar adopts straight formula blade, and cloth has the bell mouth on the blade, defoaming oar is under outside servo motor drive, can make the foam flow via the aperture after mechanical vibration and pressure dual function from bell mouth eyelet department, thereby reach the effect of defoaming, when operation, can set up the linear velocity of the bell mouth of two-thirds on the defoaming oar to be greater than 5m/s, can guarantee the effective suppression and the elimination of foam like this, when mixing in succession, can stop the rotation of defoaming oar under the not serious condition of foaming, with the load that reduces whole device.

The multistage spiral grinding pump comprises a pump mandrel and a shell, a solid-liquid mixture enters the liquid preparation tank after being ground by the multistage spiral grinding pump, and the fisheye (powder in water) phenomenon in the liquid preparation process of the fracturing liquid is reduced.

The backflow device mainly comprises a backflow pump, a backflow pipeline and a corresponding control switch, one end of the backflow pipeline is connected with the liquid preparation tank, the other end of the backflow pipeline is connected with the front portion of the safety valve, the control switch can be opened under the condition that the fracturing liquid prepared in the liquid preparation tank does not reach the standard, the fluid in the liquid preparation tank flows through the switch and then flows back through the backflow pump, the fluid is fused with the dry powder thickening agent sucked by the jet pump again, and the mixed fluid enters the liquid preparation tank to be fully stirred after passing through the safety valve and the multistage grinding pump again so as to realize the re-preparation of the performance of the fracturing liquid.

Due to the adoption of the technical scheme, the invention has the following advantages: 1. the liquid mixing tank comprises the liquid mixing tank body and the plurality of stirrers, and the stirrers and the motors are symmetrically distributed at the top of the liquid mixing tank, so that the liquid mixing tank is simple in structure, convenient to install and convenient for realizing a vehicle-mounted mode; 2. the mixing cavity and the defoaming cavity are arranged in the liquid preparation tank in a communicated manner, so that the swelling degree is improved by fully mixing solid and liquid, the foam can be effectively inhibited and eliminated, and the liquid preparation quality is greatly improved; 3. the coaxial bidirectional stirrer is designed by taking the transmission characteristics of a planetary gear train as reference, the stirrer can realize bidirectional rotation of an inner transmission shaft and an outer transmission shaft (a first rotating shaft and a second rotating shaft) under the drive of the same servo motor, the mixing effect is good, the structure is compact, the transmission efficiency is high, the installation is convenient, the inner transmission shaft and the outer transmission shaft drive an upper blade and a lower blade (a first blade component and a second blade component) to respectively rotate anticlockwise and clockwise under the drive of the servo motor, the efficient shearing and stirring of fracturing fluid can be realized, and the fluid preparation time is shortened; 4. according to the invention, the multistage grinding pump is arranged at the front part of the liquid preparation tank, and the solid-liquid mixture is ground by the multistage grinding pump, so that the fish eye phenomenon can be reduced; 5. the invention is provided with the reflux pump, and can realize secondary blending of liquid performance under the condition that the prepared liquid in the liquid preparation tank does not reach the standard. The invention can be used for other solid-liquid phase or liquid-liquid phase mixing work such as fracturing fluid.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.