WO2023155108A1 - 辅助蓄能器及具有其的低压进液管汇 - Google Patents

辅助蓄能器及具有其的低压进液管汇 Download PDF

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Publication number
WO2023155108A1
WO2023155108A1 PCT/CN2022/076694 CN2022076694W WO2023155108A1 WO 2023155108 A1 WO2023155108 A1 WO 2023155108A1 CN 2022076694 W CN2022076694 W CN 2022076694W WO 2023155108 A1 WO2023155108 A1 WO 2023155108A1
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Prior art keywords
energy storage
pressure
gas
auxiliary accumulator
air
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PCT/CN2022/076694
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English (en)
French (fr)
Inventor
杜君龙
张日奎
王建伟
张鹏
纪晓磊
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烟台杰瑞石油装备技术有限公司
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Priority to PCT/CN2022/076694 priority Critical patent/WO2023155108A1/zh
Publication of WO2023155108A1 publication Critical patent/WO2023155108A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/25—Methods for stimulating production
    • E21B43/26—Methods for stimulating production by forming crevices or fractures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00

Definitions

  • the present application relates to the technical field of fracturing equipment, in particular, to an auxiliary accumulator and a low-pressure liquid inlet manifold having the same.
  • fracturing operations have put forward higher demands on the flow and pressure of fracturing fluid.
  • oil and gas service companies are reducing the number of fracturing vehicles.
  • the stand-alone performance indicators of fracturing equipment are mainly reflected in the high pressure and large flow at the discharge end of the fracturing pump.
  • the discharge end of the fracturing pump in the prior art has the problems of fracturing pump suction and low-pressure inlet manifold sanding under high-pressure and high-flow conditions, which affects the service life of the low-pressure inlet manifold. It even affects the operating efficiency of fracturing operations.
  • the main purpose of this application is to provide an auxiliary accumulator and a low-pressure liquid inlet manifold with it, so as to solve the problems in the prior art that fracturing equipment is prone to cavitation and sand settling during high-pressure and high-flow operations.
  • an auxiliary accumulator which is arranged on a housing having a branch channel and an installation port communicating with each other, the branch channel communicates with the main pipeline, and the auxiliary accumulator includes:
  • the energy storage component is arranged on the housing and is located at the installation port.
  • the energy storage component includes an energy storage structure and an air bag arranged in the energy storage structure.
  • the energy storage structure has an energy storage cavity and an air passage part, and the air passage part communicates with the air bag , the energy storage chamber communicates with the branch channel through the installation port; wherein, the gas can enter the airbag through the gas passage or be discharged from the airbag, so that the airbag can expand and contract, and the stretching direction of the airbag and the extension direction of the branch channel are preset. Angle settings.
  • the multiple energy storage components are set in one-to-one correspondence with the multiple branch channels.
  • the airbag includes: a bag body with an air passage opening; a flange structure disposed on the bag body and located at the air passage opening, and the air passage opening communicates with the air passage portion.
  • the energy storage structure includes: an energy storage pipeline, the first end of which is connected to the shell;
  • the cover body has an air passage portion; wherein, the flange structure is arranged between the cover body and the second end of the energy storage pipeline to connect the air bag and the energy storage structure.
  • the airbag is made of rubber or silicone.
  • the energy storage structure further includes: fasteners, which are passed through the cover body, the flange structure and the energy storage pipeline to fasten the airbag and the energy storage structure.
  • a low-pressure liquid inlet manifold including: a main pipeline; a main accumulator connected to the main pipeline; a casing arranged on the main pipeline, and the casing has branch passages and The installation port, the branch channel is connected with the main pipeline; the auxiliary accumulator is arranged at the installation port; the air pipe is connected with the gas passing part of the auxiliary accumulator; the valve body assembly is arranged on the air pipe for controlling At least one of the pressure, flow rate and flow rate of the gas in the trachea; wherein the auxiliary accumulator is the above-mentioned auxiliary accumulator.
  • the housing includes: a housing body with a branch channel and a mounting hole; a connecting pipe, one end of which is passed through the mounting hole and connected to the housing body, and the other end of the connecting pipe has a mounting port; wherein, the storage
  • the structure can be connected with connecting pipes.
  • valve body assembly includes: a pressure relief valve, which is opened when the gas pressure in the gas pipe is greater than or equal to a preset pressure value, so that at least part of the gas in the gas pipe is discharged to the outside of the low-pressure liquid inlet manifold.
  • the low-pressure liquid inlet manifold also includes an air supply device, and the air supply device communicates with the gas passing part through the air pipe;
  • the valve body assembly includes: a three-way ball valve, located between the air supply device and the auxiliary accumulator; When the pressure valve is opened, the gas entering the air pipe is controlled by the three-way ball valve to be discharged to the outside of the low-pressure liquid inlet manifold; and/or; a pressure regulating valve, the pressure regulating valve is located between the gas supply device and the auxiliary accumulator for Adjust the pressure in the trachea.
  • the airbag when the pressure outside the airbag is higher than the pressure inside it (that is, the pressure in the low-pressure liquid inlet manifold is higher than the pressure inside the airbag), the airbag can shrink or sag, so that the volume of the energy storage chamber increases , the medium located in the main pipeline can enter the energy storage chamber, when the plunger pump corresponding to the branch channel sucks, the pressure in the low-pressure liquid inlet manifold drops, and the pressure outside the airbag is lower than the pressure inside it (That is, when the pressure in the low-pressure liquid inlet manifold is lower than the pressure in the air bag), the air bag bulges and inflates to squeeze out the medium in the energy storage chamber, and then replenish liquid into the main pipeline.
  • the auxiliary accumulator in this application can not only realize rapid liquid replenishment, avoid the plunger pump from being sucked, improve the operating efficiency of the plunger pump, prolong the service life of the plunger pump, but also alleviate or even eliminate the problem of sand settling. It solves the problem that the fracturing equipment in the prior art is prone to cavitation and sand settling during high-pressure and large-flow operations.
  • Fig. 1 shows the cross-sectional view of an embodiment of an auxiliary accumulator according to the present application after being assembled with a main pipeline and a casing;
  • Fig. 2 shows a schematic diagram of a partial three-dimensional structure after the auxiliary accumulator in Fig. 1 is assembled with the main pipeline and the housing;
  • Figure 3 shows a schematic structural view of an embodiment of a low-pressure liquid inlet manifold according to the present application.
  • Fig. 4 shows a schematic structural diagram of the low-pressure liquid inlet manifold in Fig. 3 .
  • Main pipeline 20. Shell; 21. Branch channel; 22. Installation port; 23. Shell body; 24. Connecting pipe; 30. Energy storage structure; 31. Energy storage chamber; , energy storage pipeline; 34, cover body; 35, fasteners; 40, air bag; 41, bag body; 42, flanging structure; 50, auxiliary accumulator; 60, main accumulator; 70, air pipe; 80 , pressure relief valve; 90, three-way ball valve; 100, pressure regulating valve.
  • orientation words such as “up, down” are generally for the direction shown in the drawings, or for the vertical, perpendicular or gravitational direction Similarly, for the convenience of understanding and description, "left and right” usually refer to the left and right shown in the drawings; The words are not used to limit the application.
  • the application provides an auxiliary accumulator and a low-pressure liquid inlet manifold with it.
  • the auxiliary accumulator is arranged on a housing 20 having a branch channel 21 and an installation port 22 communicating with each other, and the branch channel 21 communicates with the main pipeline 10 .
  • Auxiliary accumulators include energy storage components.
  • the energy storage assembly is arranged on the housing 20 and is located at the installation port 22.
  • the energy storage assembly includes an energy storage structure 30 and an airbag 40 disposed in the energy storage structure 30.
  • the energy storage structure 30 has an energy storage cavity 31 and an air passage 32.
  • the gas passing portion 32 communicates with the air bag 40
  • the energy storage chamber 31 communicates with the branch channel 21 through the installation port 22 .
  • the gas can enter the airbag 40 or be discharged from the airbag 40 through the gas passing part 32, so that the airbag 40 can expand and contract.
  • the airbag 40 when the pressure outside the airbag 40 is higher than the pressure inside it (that is, the pressure in the low-pressure liquid inlet manifold is higher than the pressure in the airbag 40), the airbag 40 can shrink or sag, so that the energy storage chamber The volume of 31 increases, and the medium in the main pipeline 10 can enter the energy storage chamber 31.
  • the plunger pump corresponding to the branch channel 21 acts to reduce the pressure in the low-pressure liquid inlet manifold.
  • the air bag 40 When the pressure on the outside of 40 is lower than the pressure on its inside (that is, the pressure in the low-pressure liquid inlet manifold is lower than the pressure in the air bag 40), the air bag 40 will bulge and expand to squeeze out the medium in the energy storage chamber 31, and then flow to the main Liquid replenishment in pipeline 10.
  • the auxiliary accumulator in this application can not only realize rapid liquid replenishment, avoid the plunger pump from being sucked, improve the operating efficiency of the plunger pump, prolong the service life of the plunger pump, but also alleviate or even eliminate the problem of sand settling. It solves the problem that the fracturing equipment in the prior art is prone to cavitation and sand settling during high-pressure and large-flow operations.
  • the preset included angle is 90°.
  • multiple energy storage components there are multiple energy storage components, and the multiple energy storage components are set in one-to-one correspondence with the multiple branch channels 21 .
  • multiple branch passages 21 are provided in one-to-one correspondence with multiple plunger pumps.
  • multiple energy storage components can ensure the stability of the hydraulic supply pressure of the corresponding plunger pumps. , so as to avoid the phenomenon of fracturing suction, so as to improve the service life and performance of the plunger pump.
  • the above-mentioned auxiliary accumulator replenishes the supply pressure, the compression and expansion of the air bag 40 can prevent sand settling.
  • the auxiliary accumulator can ensure that the pressure in the main pipeline 10 is stable, so that the fluid in the main pipeline 10 can flow fully, and can also play a role in preventing sand settling to a certain extent. Therefore, low-pressure inlet manifolds can also alleviate or even eliminate grit settling problems.
  • the airbag 40 includes a bag body 41 and a cuff structure 42 .
  • the capsule body 41 has an air passage opening.
  • the flange structure 42 is disposed on the bladder 41 and located at the air passage opening, and the air passage opening communicates with the air passage portion 32 .
  • above-mentioned arrangement makes the structure of airbag 40 simpler on the one hand, is easy to process, realizes, has reduced the processing cost of airbag 40; The disassembly and assembly of the user is easier and simpler, and the difficulty of disassembly and assembly is reduced.
  • the flange structure 42 is ring-shaped, thereby increasing the connection area between the airbag 40 and the energy storage structure 30 and improving the assembly stability of the two.
  • the energy storage structure 30 includes an energy storage pipeline 33 and a cover 34 .
  • the first end of the energy storage pipeline 33 is connected with the casing 20 .
  • the cover body 34 is arranged on the second end of the energy storage pipeline 33 and surrounds the energy storage chamber 31 with the energy storage pipeline 33 .
  • the cover body 34 has an air passage portion 32 .
  • the flange structure 42 is disposed between the cover body 34 and the second end of the energy storage pipe 33 to connect the airbag 40 and the energy storage structure 30 .
  • the energy storage chamber 31 is formed around the cover body 34 and the energy storage pipe 33 and the two are detachably connected, so that the installation or removal of the airbag 40 is easier and simpler, and the difficulty of disassembly is reduced.
  • the flange structure 42 is sandwiched between the cover body 34 and the second end of the energy storage pipe 33 to position the airbag 40 to ensure that the contraction and expansion movement of the airbag 40 can prevent sand settling.
  • the cover body 34 and the energy storage pipe 33 form a pair of clips to press the two sides of the flange structure 42 to separate the inner side of the airbag 40 and the energy storage chamber 31 from the outside world to achieve a sealing effect.
  • the airbag 40 is made of rubber or silicone.
  • the above arrangement ensures that the airbag 40 is an elastic structure that can shrink or expand under the action of internal and external pressure and withstand repeated deformations, prolonging the service life of the airbag 40 and reducing the processing cost and difficulty of the airbag 40 .
  • the air bag 40 can withstand a certain inner pressure without damage, and the pressure is set according to the pressure of the low-pressure liquid inlet manifold, usually 0.1-1.6 MPa.
  • the energy storage structure 30 further includes a fastener 35 .
  • the fastener 35 is provided on the cover body 34 , the flange structure 42 and the energy storage pipe 33 to fasten the airbag 40 and the energy storage structure 30 .
  • the fasteners 35 are screws or bolts. In this way, when the airbag 40 and the energy storage structure 30 need to be assembled, it is only necessary to pass the fastening end of the fastener 35 on the flange structure 42, the cover body 34 and the energy storage pipe 33, which reduces the need for assembly. difficulty.
  • the extending direction of the fastener 35 is consistent with the extending direction of the energy storage structure 30 .
  • the energy storage structure 30 is a cylindrical channel, and there are multiple fasteners 35, and the multiple fasteners 35 are arranged at intervals around the central axis of the cylindrical channel.
  • connection method between the cover body 34 and the energy storage pipe 33 is not limited to this, and can be adjusted according to working conditions and usage requirements.
  • at least one of flange connection, V-shaped clamp connection, V-shaped band connection and screw connection is used between the cover body 34 and the energy storage pipe 33 .
  • the present application also provides a low-pressure liquid inlet manifold, which includes a main pipe 10 , a main accumulator 60 , a casing 20 , an auxiliary accumulator 50 , a gas pipe 70 and a valve body assembly.
  • the main accumulator 60 is connected to the main pipe 10 .
  • the casing 20 is arranged on the main pipe 10 , and the casing 20 has a branch passage 21 and an installation opening 22 communicating with each other, and the branch passage 21 communicates with the main pipe 10 .
  • the auxiliary accumulator 50 is provided at the installation port 22 .
  • the gas pipe 70 communicates with the gas transition portion 32 of the auxiliary accumulator 50 .
  • the valve body assembly is disposed on the gas pipe 70 for controlling at least one of the pressure, flow rate and flow rate of the gas in the gas pipe 70 .
  • the auxiliary accumulator 50 is the above-mentioned auxiliary accumulator.
  • the extending direction of the energy storage chamber 31 intersects or is close to the center line of the branch channel 21 , so as to ensure a sufficient cross section between the energy storage chamber 31 and the main pipe 10 .
  • the extension direction of the energy storage chamber 31 is set at an included angle with the horizontal plane and the connection end with the main pipe 10 is lower, so as to prevent the accumulating medium in the energy storage chamber 31 .
  • branch channels 21 there are a plurality of branch channels 21 , and the plurality of branch channels 21 are arranged at intervals along the extension direction of the main pipe 10 ;
  • the housing 20 includes a housing body 23 and a connecting pipe 24 .
  • the housing body 23 has a branch channel 21 and a mounting hole.
  • One end of the connection pipe 24 is passed through the installation hole and connected to the housing body 23 , and the other end of the connection pipe 24 has an installation opening 22 .
  • the first end of the energy storage pipeline 33 is connected with the connection pipeline 24 .
  • one end of the connecting pipe 24 is welded to the housing body 23 to avoid leakage of the medium at the connection between the two.
  • the energy storage structure 30 is detachably connected to the connecting pipe 24, so that the maintenance or replacement of the energy storage structure 30 is easier and simpler, and the labor intensity of the staff is reduced.
  • the energy storage structure 30 is screwed to the connecting pipe 24 .
  • connection method between the energy storage structure 30 and the connecting pipe 24 is not limited thereto, and can be adjusted according to working conditions and usage requirements.
  • the energy storage structure 30 is connected to the connecting pipe 24 through a fastener, or a union connection, or a snap connection, or a flange, or welding.
  • the energy storage components on each branch can be connected to the same air supply device to set the same pressure inside the airbag, or they can be connected to different air supply devices through multiple air supplies, and the liquid can be supplied according to the distance. Factors such as the distance of the pump determine the pressure inside the airbag.
  • the gas supply can also be discontinuous, and the compressed gas of the specified pressure can be filled in advance and then sealed.
  • the valve body assembly includes a pressure relief valve 80 .
  • the pressure relief valve 80 when the gas pressure in the gas pipe 70 is greater than or equal to a preset pressure value, the pressure relief valve 80 is opened, so that at least part of the gas in the gas pipe 70 is discharged to the outside of the low-pressure liquid inlet manifold.
  • the preset pressure value is the set pressure of the pressure relief valve. In this way, during the operation of the low-pressure liquid inlet manifold, when the pressure in the gas pipe 70 is higher than the set pressure of the pressure relief valve, the pressure relief valve starts to discharge pressure to the atmosphere until the pressure in the gas pipe 70 is lower than the pressure relief valve. Set pressure.
  • the low-pressure liquid inlet manifold further includes an air supply device, and the air supply device communicates with the air passage part 32 through the air pipe 70 .
  • the valve body assembly includes a three-way ball valve 90 located between the air supply and the auxiliary accumulator 50 .
  • the valve body assembly includes a pressure regulating valve 100, which is located at the supply between the gas device and the auxiliary accumulator 50 for adjusting the pressure in the gas pipe 70 .
  • the three-way ball valve 90 is used to control the air supply device to supply air or the air pipe 70 to release pressure, and the pressure regulating valve 100 is used to adjust the pressure in the air pipe 70 to maintain air supply.
  • the valve body assembly includes a pressure relief valve 80 , a three-way ball valve 90 and a pressure regulating valve 100 .
  • the three-way ball valve 90 is located between the air supply device and the pressure relief valve 80 .
  • the pressure regulating valve 100 is located between the air supply device and the pressure relief valve 80 for adjusting the pressure in the air pipe 70 .
  • the pressure relief valve 80 starts to release pressure to the atmosphere until the pressure of the gas path is lower than the set pressure of the pressure relief valve.
  • the set pressure of the pressure relief valve is equal to or slightly higher than the set pressure of the pressure regulating valve 100 .
  • the valve body assembly only includes the three-way ball valve 90 and the pressure regulating valve 100 .
  • the pressure regulating valve 100 In this way, when the pressure at the outlet of the pressure regulating valve is lower than the set pressure, gas will be quickly supplied to the gas pipe 70 located downstream of it.
  • the air pipe 70 located downstream of the pressure regulating valve does not release pressure or slowly releases pressure through the pressure regulating valve.
  • the low-pressure liquid inlet manifold further includes a pressure detection device, which is used to detect the pressure value in the main pipeline 10 .
  • a pressure detection device which is used to detect the pressure value in the main pipeline 10 .
  • the airbag When the pressure outside the airbag is higher than the pressure inside it (that is, the pressure in the low-pressure inlet manifold is higher than the pressure inside the airbag), the airbag can shrink or sag, so that the volume of the energy storage chamber increases, and the medium in the main pipeline can be Entering the energy storage chamber, when the plunger pump corresponding to the branch channel sucks, the pressure in the low-pressure liquid inlet manifold drops, and the pressure outside the airbag is lower than the pressure inside it (that is, the low-pressure liquid inlet manifold).
  • the airbag bulges and inflates to squeeze out the medium in the energy storage cavity, and then replenish fluid into the main pipeline.
  • the auxiliary accumulator in this application can not only realize rapid liquid replenishment, avoid the plunger pump from being sucked, improve the operating efficiency of the plunger pump, prolong the service life of the plunger pump, but also alleviate or even eliminate the problem of sand settling. It solves the problem that the fracturing equipment in the prior art is prone to cavitation and sand settling during high-pressure and large-flow operations.

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Abstract

一种辅助蓄能器及具有其的低压进液管汇被公开。该辅助蓄能器（50）设置在具有相互连通的支通道（21）和安装口（22）的壳体（20）上，支通道与主管道（10）连通，辅助蓄能器包括：蓄能组件，设置在壳体上且位于安装口处，蓄能组件包括蓄能结构（30）和设置在蓄能结构内的气囊（40），蓄能结构具有蓄能腔（31）和过气部（32），过气部与气囊连通，蓄能腔通过安装口与支通道连通；其中，气体可通过过气部进入气囊内或从气囊内排出，以使气囊进行伸缩，气囊的伸缩方向与支通道的延伸方向之间呈预设夹角设置。该装置有效地解决了现有技术中压裂设备在高压、大流量作业时易产生吸空、沉砂现象的问题。

Description

辅助蓄能器及具有其的低压进液管汇 技术领域
本申请涉及压裂设备技术领域，具体而言，涉及一种辅助蓄能器及具有其的低压进液管汇。
背景技术
目前，随着压裂施工工艺的进步，压裂作业对压裂液的流量和压力提出了更高需求，为了降低设备的投资成本、使用成本及维护保养成本，油气服务公司在减少压裂车组的设备数量、提高单机设备的功率密度的同时，也对单机设备的性能指标以及使用寿命提出了更高要求。其中，压裂设备的单机性能指标主要体现在压裂泵排出端的高压力和大流量。
然而，现有技术中的压裂泵排出端在高压力、大流量的工况时存在压裂泵吸空现象和低压进液管汇沉砂的问题，影响低压进液管汇的使用寿命，甚至影响压裂作业的作业效率。
申请内容
本申请的主要目的在于提供一种辅助蓄能器及具有其的低压进液管汇，以解决现有技术中压裂设备在高压、大流量作业时易产生吸空、沉砂现象的问题。
为了实现上述目的，根据本申请的一个方面，提供了一种辅助蓄能器，设置在具有相互连通的支通道和安装口的壳体上，支通道与主管道连通，辅助蓄能器包括：蓄能组件，设置在壳体上且位于安装口处，蓄能组件包括蓄能结构和设置在蓄能结构内的气囊，蓄能结构具有蓄能腔和过气部，过气部与气囊连通，蓄能腔通过安装口与支通道连通；其中，气体可通过过气部进入气囊内或从气囊内排出，以使气囊进行伸缩，气囊的伸缩方向与支通道的延伸方向之间呈预设夹角设置。
进一步地，蓄能组件为多个，多个蓄能组件与多个支通道一一对应地设置。
进一步地，气囊包括：囊体，具有过气开口；翻边结构，设置在囊体上且位于过气开口处，过气开口与过气部连通。
进一步地，蓄能结构包括：蓄能管道，蓄能管道的第一端与壳体连接；盖体，设置在蓄能管道的第二端上且与蓄能管道之间围绕形成蓄能腔，盖体具有过气部；其中，翻边结构设置在盖体与蓄能管道的第二端之间，以连接气囊和蓄能结构。
进一步地，气囊由橡胶或硅胶制成。
进一步地，蓄能结构还包括：紧固件，紧固件穿设在盖体、翻边结构及蓄能管道上，以对气囊和蓄能结构进行紧固。
根据本申请的另一方面，提供了一种低压进液管汇，包括：主管道；主蓄能器，与主管道连接；壳体，设置在主管道上，壳体具有相互连通的支通道和安装口，支通道与主管道连通；辅助蓄能器，设置在安装口处；气管，与辅助蓄能器的过气部连通；阀体组件，阀体组件设置在气管上，以用于控制气管内气体的压力、流速及流量的至少一种；其中，辅助蓄能器为上述的辅助蓄能器。
进一步地，壳体包括：壳体本体，具有支通道和安装孔；连接管道，连接管道的一端穿设在安装孔内且与壳体本体连接，连接管道的另一端具有安装口；其中，蓄能结构与连接管道连接。
进一步地，阀体组件包括：泄压阀，在气管内的气体压力大于或者等于预设压力值时，泄压阀开启，以使气管内的至少部分气体排至低压进液管汇外。
进一步地，低压进液管汇还包括供气装置，供气装置通过气管与过气部连通；阀体组件包括：三通球阀，位于供气装置与辅助蓄能器之间；其中，在泄压阀开启时，通过三通球阀控制进入气管内的气体排至低压进液管汇外；和/或；调压阀，调压阀位于供气装置与辅助蓄能器之间，以用于调整气管内的压力。
应用本申请的技术方案，在气囊外侧的压力高于其内侧的压力(即低压进液管汇内压力高于气囊内压力)时，气囊可收缩或者凹陷，以使蓄能腔的体积增大，位于主管道中的介质可进入蓄能腔内，当此与支通道对应的柱塞泵抽吸动作，以使低压进液管汇内的压力下降，在气囊外侧的压力低于其内侧的压力(即低压进液管汇内压力低于气囊内压力)时，气囊鼓起、膨胀，以将蓄能腔内的介质挤出，进而向主管道中补液。这样，本申请中的辅助蓄能器不仅可实现快速补液，避免柱塞泵吸空，提升了柱塞泵的运行效率、延长了柱塞泵的使用寿命，也能够缓解甚至消除沉砂问题，解决现有技术中压裂设备在高压、大流量作业时易产生吸空、沉砂现象的问题。
附图说明
构成本申请的一部分的说明书附图用来提供对本申请的进一步理解，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1示出了根据本申请的辅助蓄能器的实施例与主管道和壳体装配后的剖视图；
图2示出了图1中的辅助蓄能器与主管道和壳体装配后局部立体结构示意图；
图3示出了根据本申请的低压进液管汇的实施例的结构示意图；以及
图4示出了图3中的低压进液管汇的结构简图。
其中，上述附图包括以下附图标记：
10、主管道；20、壳体；21、支通道；22、安装口；23、壳体本体；24、连接管道；30、蓄能结构；31、蓄能腔；32、过气部；33、蓄能管道；34、盖体；35、紧固件；40、气囊； 41、囊体；42、翻边结构；50、辅助蓄能器；60、主蓄能器；70、气管；80、泄压阀；90、三通球阀；100、调压阀。
具体实施方式
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本申请。
需要指出的是，除非另有指明，本申请使用的所有技术和科学术语具有与本申请所属技术领域的普通技术人员通常理解的相同含义。
在本申请中，在未作相反说明的情况下，使用的方位词如“上、下”通常是针对附图所示的方向而言的，或者是针对竖直、垂直或重力方向上而言的；同样地，为便于理解和描述，“左、右”通常是针对附图所示的左、右；“内、外”是指相对于各部件本身的轮廓的内、外，但上述方位词并不用于限制本申请。
为了解决现有技术中压裂设备在高压、大流量作业时易产生吸空、沉砂现象的问题，本申请提供了一种辅助蓄能器及具有其的低压进液管汇。
如图1和图2所示，辅助蓄能器设置在具有相互连通的支通道21和安装口22的壳体20上，支通道21与主管道10连通。辅助蓄能器包括蓄能组件。蓄能组件设置在壳体20上且位于安装口22处，蓄能组件包括蓄能结构30和设置在蓄能结构30内的气囊40，蓄能结构30具有蓄能腔31和过气部32，过气部32与气囊40连通，蓄能腔31通过安装口22与支通道21连通。其中，气体可通过过气部32进入气囊40内或从气囊40内排出，以使气囊40进行伸缩，气囊40的伸缩方向与支通道21的延伸方向之间呈预设夹角设置。
应用本实施例的技术方案，在气囊40外侧的压力高于其内侧的压力(即低压进液管汇内压力高于气囊40内压力)时，气囊40可收缩或者凹陷，以使蓄能腔31的体积增大，位于主管道10中的介质可进入蓄能腔31内，当此与支通道21对应的柱塞泵抽吸动作，以使低压进液管汇内的压力下降，在气囊40外侧的压力低于其内侧的压力(即低压进液管汇内压力低于气囊40内压力)时，气囊40鼓起、膨胀，以将蓄能腔31内的介质挤出，进而向主管道10中补液。这样，本申请中的辅助蓄能器不仅可实现快速补液，避免柱塞泵吸空，提升了柱塞泵的运行效率、延长了柱塞泵的使用寿命，也能够缓解甚至消除沉砂问题，解决现有技术中压裂设备在高压、大流量作业时易产生吸空、沉砂现象的问题。
在本实施例中，预设夹角为90°。
可选地，蓄能组件为多个，多个蓄能组件与多个支通道21一一对应地设置。这样，多个支通道21与多个柱塞泵一一对应地设置，在主管道10中介质的压力不足或者波动时，多个蓄能组件可保证对应的柱塞泵的供液压力的稳定，从而避免产生压裂吸空现象，以提高柱塞泵的使用寿命和性能。另一方面，在上述辅助蓄能器补充供液压力时，气囊40的压缩和扩张动作可以起到防止沉砂的作用。另外，该辅助蓄能器可保证主管道10中的压力稳定，使得主 管道10中的流体可充分流动，也可在一定程度上起到防止沉砂的作用。因此，低压进液管汇还可缓解甚至消除沉砂问题。
如图1和图2所示，气囊40包括囊体41和翻边结构42。其中，囊体41具有过气开口。翻边结构42设置在囊体41上且位于过气开口处，过气开口与过气部32连通。这样，上述设置一方面使得气囊40的结构更加简单，容易加工、实现，降低了气囊40的加工成本；另一方面可通过翻边结构42将气囊40安装在蓄能结构30上，以使二者的拆装更加容易、简便，降低了拆装难度。
具体地，翻边结构42呈环形，进而增大了气囊40与蓄能结构30的连接面积，提升了二者的装配稳定性。
如图1和图2所示，蓄能结构30包括蓄能管道33和盖体34。其中，蓄能管道33的第一端与壳体20连接。盖体34设置在蓄能管道33的第二端上且与蓄能管道33之间围绕形成蓄能腔31，盖体34具有过气部32。其中，翻边结构42设置在盖体34与蓄能管道33的第二端之间，以连接气囊40和蓄能结构30。这样，由盖体34和蓄能管道33之间围绕形成蓄能腔31且二者可拆卸地连接，以使气囊40的装入或者拆出更加容易、简便，降低了拆装难度。同时，将翻边结构42夹设在盖体34与蓄能管道33的第二端之间，以对气囊40进行定位，确保气囊40的收缩、扩张运动能够起到防止沉砂的作用。
具体地，盖体34和蓄能管道33形成对夹，以将翻边结构42的两侧压紧，分别实现气囊40内侧、蓄能腔31与外界的阻隔，达到密封效果。
可选地，气囊40由橡胶或硅胶制成。这样，上述设置确保气囊40为弹性结构，能够在其内、外压力作用下进行收缩或者扩张并承受反复形变，延长了气囊40的使用寿命，也降低了气囊40的加工成本和加工难度。
在本实施例中，气囊40可承受一定的内侧压力不破坏，该压力根据低压进液管汇的压力设定，通常为0.1～1.6MPa。
如图1和图2所示，蓄能结构30还包括紧固件35。其中，紧固件35穿设在盖体34、翻边结构42及蓄能管道33上，以对气囊40和蓄能结构30进行紧固。可选地，紧固件35为螺钉或螺栓。这样，当需要将气囊40与蓄能结构30进行装配时，只需将紧固件35的紧固端穿设在翻边结构42、盖体34和蓄能管道33上即可，降低了装配难度。
具体地，紧固件35的延伸方向与蓄能结构30的延伸方向一致。
可选地，蓄能结构30为圆柱通道，紧固件35为多个，多个紧固件35绕圆柱通道的中心轴间隔设置。
需要说明的是，盖体34和蓄能管道33的连接方式不限于此，可根据工况和使用需求进行调整。可选地，盖体34和蓄能管道33之间采用法兰连接、V型卡箍连接、V型箍带连接及螺纹连接中的至少一种连接方式。
如图3和图4所示，本申请还提供了一种低压进液管汇，包括主管道10、主蓄能器60、壳体20、辅助蓄能器50、气管70及阀体组件。主蓄能器60与主管道10连接。壳体20设置在主管道10上，壳体20具有相互连通的支通道21和安装口22，支通道21与主管道10连通。辅助蓄能器50设置在安装口22处。气管70与辅助蓄能器50的过气部32连通。阀体组件设置在气管70上，以用于控制气管70内气体的压力、流速及流量的至少一种。其中，辅助蓄能器50为上述的辅助蓄能器。
在本实施例中，蓄能腔31的延伸方向与支通道21的中心线相交或接近，以确保蓄能腔31与主管道10之间有足够的过流截面。蓄能腔31的延伸方向与水平面之间呈夹角设置且与主管道10的连接端较低，以防止蓄能腔31内存积介质。
可选地，支通道21为多个，多个支通道21沿主管道10的延伸方向间隔设置；安装口22为多个，多个安装口22与多个支通道21一一对应地设置。
如图1和图2所示，壳体20包括壳体本体23和连接管道24。壳体本体23具有支通道21和安装孔。连接管道24的一端穿设在安装孔内且与壳体本体23连接，连接管道24的另一端具有安装口22。其中，蓄能管道33的第一端与连接管道24连接。这样，上述设置使得壳体20与蓄能结构30的拆装更加容易、简便，降低了二者的装配难度。同时，上述设置确保蓄能结构30位于支通道21上，以确保柱塞泵的供液压力稳定性。
在本实施例中，连接管道24的一端与壳体本体23焊接，以避免介质在二者连接处发生泄露。蓄能结构30与连接管道24可拆卸地连接，以使蓄能结构30的维护或者更换更加容易、简便，降低了工作人员的劳动强度。
具体地，蓄能结构30与连接管道24螺纹连接。
需要说明的是，蓄能结构30与连接管道24的连接方式不限于此，可根据工况和使用需求进行调整。可选地，蓄能结构30与连接管道24通过紧固件连接、或者由壬连接、或者卡接、或者法兰、或者焊接。
具体地，各支路上的蓄能组件可都连接在同一路供气装置上，设定相同的气囊内侧压力，也可通过多路供气分别连接在不同的供气装置上，根据距离供液泵的远近等因素，确定气囊内侧压力。此外，也可不连续供气，提前充入指定压力的压缩气体后密封。这样，当低压进液管汇内的压力高于气囊40内的压力时，气囊40压缩或凹陷，蓄能腔31的体积增大，即管汇内介质进入蓄能腔31内，与此支路对应的柱塞泵抽吸动作，以使管汇内压力下降；当管汇内压力低于气囊40内压力时，气囊40鼓起、膨胀，以将蓄能腔31内的介质挤出，向主管道10内补液。这样，上述设置不仅可实现快速补液，防止柱塞泵吸空，提升了柱塞泵效率及寿命，也能够缓解甚至消除沉砂问题。
如图3和图4所示，阀体组件包括泄压阀80。其中，在气管70内的气体压力大于或者等于预设压力值时，泄压阀80开启，以使气管70内的至少部分气体排至低压进液管汇外。可选地，预设压力值为泄压阀设定压力。这样，在低压进液管汇运行过程中，当气管70内的压 力高于泄压阀设定压力时，泄压阀开始向大气排气泄压，直至气管70内的压力低于泄压阀设定压力。
可选地，低压进液管汇还包括供气装置，供气装置通过气管70与过气部32连通。阀体组件包括三通球阀90，三通球阀90位于供气装置与辅助蓄能器50之间。其中，在泄压阀80开启时，通过三通球阀90控制进入气管70内的气体排至低压进液管汇外；和/或；阀体组件包括调压阀100，调压阀100位于供气装置与辅助蓄能器50之间，以用于调整气管70内的压力。这样，在低压进液管汇运行过程中，通过三通球阀90控制供气装置供气或者气管70泄压，通过调压阀100调节气管70内的压力，并保持供气。
在本实施例中，阀体组件包括泄压阀80、三通球阀90及调压阀100。其中，三通球阀90位于供气装置与泄压阀80之间。在泄压阀80开启时，通过三通球阀90控制进入气管70内的气体排至低压进液管汇外。调压阀100位于供气装置与泄压阀80之间，以用于调整气管70内的压力。当调压阀出口压力低于设定压力时，向位于其下游处的气管70内快速供气。具体地，在气管70内的压力高于泄压阀设定压力时，泄压阀80开始向大气排气泄压，直至气路压力低于泄压阀设定压力。其中。泄压阀设定压力等于或略高于调压阀100的设定压力。
在附图中未示出的其他实施方式中，阀体组件仅包括三通球阀90和调压阀100。这样，当调压阀出口压力低于设定压力时，则向位于其下游处的气管70内快速供气。当调压阀出口压力高于设定压力时，位于调压阀下游处的气管70不泄压或通过调压阀缓慢泄压。
可选地，低压进液管汇还包括压力检测装置，压力检测装置用于检测主管道10内的压力值。这样，通过对主管道10内压力和调压阀设定压力的收集、智能系统分析、自动压力调节，可不断优化压力调节参数，以根据不同作业工况及时调节，进一步减少人力，提高设备使用性能及寿命。
从以上的描述中，可以看出，本申请上述的实施例实现了如下技术效果：
在气囊外侧的压力高于其内侧的压力(即低压进液管汇内压力高于气囊内压力)时，气囊可收缩或者凹陷，以使蓄能腔的体积增大，位于主管道中的介质可进入蓄能腔内，当此与支通道对应的柱塞泵抽吸动作，以使低压进液管汇内的压力下降，在气囊外侧的压力低于其内侧的压力(即低压进液管汇内压力低于气囊内压力)时，气囊鼓起、膨胀，以将蓄能腔内的介质挤出，进而向主管道中补液。这样，本申请中的辅助蓄能器不仅可实现快速补液，避免柱塞泵吸空，提升了柱塞泵的运行效率、延长了柱塞泵的使用寿命，也能够缓解甚至消除沉砂问题，解决现有技术中压裂设备在高压、大流量作业时易产生吸空、沉砂现象的问题。
显然，上述所描述的实施例仅仅是本申请一部分的实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本申请保护的范围。
需要注意的是，这里所使用的术语仅是为了描述具体实施方式，而非意图限制根据本申请的示例性实施方式。如在这里所使用的，除非上下文另外明确指出，否则单数形式也意图 包括复数形式，此外，还应当理解的是，当在本说明书中使用术语“包含”和/或“包括”时，其指明存在特征、步骤、工作、器件、组件和/或它们的组合。
需要说明的是，本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本申请的实施方式能够以除了在这里图示或描述的那些以外的顺序实施。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (10)

  1. 一种辅助蓄能器，设置在具有相互连通的支通道(21)和安装口(22)的壳体(20)上，所述支通道(21)与主管道(10)连通，其特征在于，所述辅助蓄能器包括：
    蓄能组件，设置在所述壳体(20)上且位于所述安装口(22)处，所述蓄能组件包括蓄能结构(30)和设置在所述蓄能结构(30)内的气囊(40)，所述蓄能结构(30)具有蓄能腔(31)和过气部(32)，所述过气部(32)与所述气囊(40)连通，所述蓄能腔(31)通过所述安装口(22)与所述支通道(21)连通；
    其中，气体可通过所述过气部(32)进入所述气囊(40)内或从所述气囊(40)内排出，以使所述气囊(40)进行伸缩，所述气囊(40)的伸缩方向与所述支通道(21)的延伸方向之间呈预设夹角设置。
  2. 根据权利要求1所述的辅助蓄能器，其特征在于，所述蓄能组件为多个，多个所述蓄能组件与多个所述支通道(21)一一对应地设置。
  3. 根据权利要求1所述的辅助蓄能器，其特征在于，所述气囊(40)包括：
    囊体(41)，具有过气开口；
    翻边结构(42)，设置在所述囊体(41)上且位于所述过气开口处，所述过气开口与所述过气部(32)连通。
  4. 根据权利要求3所述的辅助蓄能器，其特征在于，所述蓄能结构(30)包括：
    蓄能管道(33)，所述蓄能管道(33)的第一端与所述壳体(20)连接；
    盖体(34)，设置在所述蓄能管道(33)的第二端上且与所述蓄能管道(33)之间围绕形成所述蓄能腔(31)，所述盖体(34)具有所述过气部(32)；其中，所述翻边结构(42)设置在所述盖体(34)与所述蓄能管道(33)的第二端之间，以连接所述气囊(40)和所述蓄能结构(30)。
  5. 根据权利要求4所述的辅助蓄能器，其特征在于，所述蓄能结构(30)还包括：
    紧固件(35)，所述紧固件(35)穿设在所述盖体(34)、所述翻边结构(42)及所述蓄能管道(33)上，以对所述气囊(40)和所述蓄能结构(30)进行紧固。
  6. 根据权利要求1所述的辅助蓄能器，其特征在于，所述气囊(40)由橡胶或硅胶制成。
  7. 一种低压进液管汇，其特征在于，包括：
    主管道(10)；
    主蓄能器(60)，与所述主管道(10)连接；
    壳体(20)，设置在所述主管道(10)上，所述壳体(20)具有相互连通的支通道(21)和安装口(22)，所述支通道(21)与所述主管道(10)连通；
    辅助蓄能器(50)，设置在所述安装口(22)处；
    气管(70)，与所述辅助蓄能器(50)的过气部(32)连通；
    阀体组件，所述阀体组件设置在所述气管(70)上，以用于控制所述气管(70)内气体的压力、流速及流量的至少一种；其中，所述辅助蓄能器(50)为权利要求1至6中任一项所述的辅助蓄能器。
  8. 根据权利要求7所述的低压进液管汇，其特征在于，所述壳体(20)包括：
    壳体本体(23)，具有所述支通道(21)和安装孔；
    连接管道(24)，所述连接管道(24)的一端穿设在所述安装孔内且与所述壳体本体(23)连接，所述连接管道(24)的另一端具有所述安装口(22)；其中，所述蓄能结构(30)与所述连接管道(24)连接。
  9. 根据权利要求7所述的低压进液管汇，其特征在于，所述阀体组件包括：
    泄压阀(80)，在所述气管(70)内的气体压力大于或者等于预设压力值时，所述泄压阀(80)开启，以使所述气管(70)内的至少部分气体排至所述低压进液管汇外。
  10. 根据权利要求9所述的低压进液管汇，其特征在于，所述低压进液管汇还包括供气装置，所述供气装置通过所述气管(70)与所述过气部(32)连通；所述阀体组件包括：
    三通球阀(90)，位于所述供气装置与所述辅助蓄能器(50)之间；其中，在所述泄压阀(80)开启时，通过所述三通球阀(90)控制进入所述气管(70)内的气体排至所述低压进液管汇外；和/或；
    调压阀(100)，所述调压阀(100)位于所述供气装置与所述辅助蓄能器(50)之间，以用于调整所述气管(70)内的压力。
PCT/CN2022/076694 2022-02-17 2022-02-17 辅助蓄能器及具有其的低压进液管汇 WO2023155108A1 (zh)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2104964A (en) * 1981-08-12 1983-03-16 Christie Hydraulics Ltd Improvements relating to hydropneumatic accumulators
US20050020870A1 (en) * 2003-06-11 2005-01-27 Aisin Seiki Kabushiki Kaisha Method of balloon pumping and a balloon pump driving apparatus
CN105156371A (zh) * 2015-08-24 2015-12-16 芜湖市汽车产业技术研究院有限公司 用于液压系统的蓄能器
CN107709794A (zh) * 2015-06-09 2018-02-16 贺德克技术有限公司 用于制造气囊式蓄能器的方法以及根据该方法制造的气囊式蓄能器
CN109236761A (zh) * 2018-10-19 2019-01-18 广东力源液压机械有限公司 一种液压蓄能控制方法及其液压蓄能装置
CN211449233U (zh) * 2019-12-30 2020-09-08 南通松能机械科技有限公司 一种用于双液压缸液压系统的蓄能器组件
CN113404476A (zh) * 2021-01-21 2021-09-17 烟台杰瑞石油装备技术有限公司 低压进液管汇和压裂设备

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2104964A (en) * 1981-08-12 1983-03-16 Christie Hydraulics Ltd Improvements relating to hydropneumatic accumulators
US20050020870A1 (en) * 2003-06-11 2005-01-27 Aisin Seiki Kabushiki Kaisha Method of balloon pumping and a balloon pump driving apparatus
CN107709794A (zh) * 2015-06-09 2018-02-16 贺德克技术有限公司 用于制造气囊式蓄能器的方法以及根据该方法制造的气囊式蓄能器
CN105156371A (zh) * 2015-08-24 2015-12-16 芜湖市汽车产业技术研究院有限公司 用于液压系统的蓄能器
CN109236761A (zh) * 2018-10-19 2019-01-18 广东力源液压机械有限公司 一种液压蓄能控制方法及其液压蓄能装置
CN211449233U (zh) * 2019-12-30 2020-09-08 南通松能机械科技有限公司 一种用于双液压缸液压系统的蓄能器组件
CN113404476A (zh) * 2021-01-21 2021-09-17 烟台杰瑞石油装备技术有限公司 低压进液管汇和压裂设备

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