Hydraulic drive liquid piston fluid conveying system with liquid spraying cooling function

Abstract

A hydraulic drive liquid piston fluid delivery system for liquid spray cooling comprises a first delivery tank and a second delivery tank, the top of which is provided with a suction one-way valve and a discharge one-way valve, and which are configured to alternately suck and discharge fluid; the liquid piston driving device is hydraulically driven, is communicated with the first transmission tank and the second transmission tank, and is configured to press the working liquid into one of the first transmission tank and the second transmission tank to compress the working liquid and discharge the working liquid, and meanwhile, the working liquid is pumped away from the other one of the first transmission tank and the second transmission tank to suck the working liquid into the working liquid; the separator is used for containing working liquid and is configured to receive the fluid discharged by the first conveying tank and the second conveying tank, separate the conveyed fluid and the working liquid and discharge the conveyed fluid, and the separator is communicated with the first conveying tank and the second conveying tank through a reversing valve; and the first conveying tank and the second conveying tank are used for alternately spraying the working liquid in the separator into the first conveying tank and the second conveying tank which are used for discharging the liquid.

Description

Technical Field

[0001] The present disclosure relates to the technical field of compressors, and in particular to a hydraulically driven liquid piston fluid delivery system with liquid spray cooling. Background Art

[0002] In the later stage of natural gas field production, as the reservoir pressure gradually decreases and the flow rate in the gas well decreases, liquid accumulation in the well pipe often occurs, hindering natural gas production. If not properly handled, it may even lead to flooding, making it impossible to produce natural gas and shortening the life of the gas well. Wellhead boosting is a low-investment and effective solution. By suctioning with a compressor, the natural gas wellhead pressure is reduced, the pressure difference between the gas reservoir and the wellhead is increased, thereby increasing the flow rate in the well pipe and carrying the liquid in the well pipe to the ground. However, due to the complex process conditions of natural gas wells, the wide range of operating conditions, and the random gas-liquid ratio from 0-100%, there is currently no mature wellhead boosting equipment. Using a pump to boost pressure will cause the discharge temperature to be too high when the gas component is high, resulting in damage. When using a compressor to boost pressure, it will cause excessive impact in the compression cylinder when the liquid component is high, resulting in damage.

[0003] In the field of hydrogen energy, hydrogen energy has been increasingly valued and developed by countries around the world for its environmental and economic advantages, and the compressor for hydrogen fuel cell refueling is an indispensable equipment for the development of the hydrogen energy industry. In order to ensure its efficiency and life, hydrogen fuel cells have extremely high requirements for the purity of hydrogen (above 99.97%). The compressor of the hydrogen refueling station needs to pressurize the hydrogen in the hydrogen transport vehicle to 45-90 MPa before filling it into the hydrogen energy vehicle. The high pressure and high purity compression bring huge challenges to the compressor of the hydrogen refueling station in terms of leakage, wear, reliability, hydrogen embrittlement, frequent start and stop, etc. At present, the liquid-driven piston hydrogenation compressor mostly adopts self-lubricating sealing materials for sealing, without liquid lubrication, and the cylinder body adopts hydrogen embrittlement-resistant austenitic stainless steel, which leads to high material cost, and the austenitic stainless steel material has low hardness and is not wear-resistant, and has a high failure rate, which hinders the speed of hydrogen energy promotion.

[0004] During the gas compression process, a large amount of heat will be generated, which can easily cause the transmission equipment to overheat, resulting in low working efficiency and high safety risks, which is not conducive to its normal operation. Summary of the invention

[0005] The present disclosure provides a hydraulically driven liquid piston fluid delivery system with liquid spray cooling, characterized in that it comprises:

[0006] The first transmission tank and the second transmission tank are provided with a suction check valve and a discharge check valve on the top, and are configured to alternately suck in and discharge the fluid;

[0007] a liquid piston driving device, which is hydraulically driven, is connected to the first transmission tank and the second transmission tank, and is configured to press the working liquid into one of the first transmission tank and the second transmission tank to compress and discharge the fluid, and simultaneously draw the working liquid out of the other of the first transmission tank and the second transmission tank to inhale the fluid;

[0008] The separator contains working fluid and is configured to receive fluid discharged from the first transmission tank and the second transmission tank, separate the transmitted fluid and the working fluid, and discharge the transmitted fluid. The separator is connected to the first transmission tank and the second transmission tank through a reversing valve and is configured to alternately spray the working fluid inside the separator into the first transmission tank and the second transmission tank that discharge the fluid.

[0009] In some embodiments, the liquid piston drive device includes:

[0010] The hydraulic cylinder comprises a first hydraulic chamber and a second hydraulic chamber, wherein the first hydraulic chamber and the second hydraulic chamber are filled with hydraulic oil, and a hydraulic piston is arranged inside the hydraulic cylinder;

[0011] a hydraulic station, which is in communication with the hydraulic cylinder and includes a hydraulic pump and a hydraulic oil reversing mechanism, wherein the hydraulic oil cooperates with the hydraulic oil reversing mechanism to alternately inject hydraulic oil into the first hydraulic chamber and the second hydraulic chamber, so that the volumes of the first hydraulic chamber and the second hydraulic chamber are alternately increased or decreased and the hydraulic piston is driven by the hydraulic oil to reciprocate in the hydraulic cylinder; and

[0012] The first cylinder body and the second cylinder body are respectively arranged on both sides of the hydraulic cylinder. The interior of the first cylinder body is divided into a first chamber and a second chamber by a first piston. The interior of the second cylinder body is divided into a third chamber and a fourth chamber by a second piston. The first chamber, the second chamber, the third chamber and the fourth chamber are filled with working fluid.

[0013] The first piston and the second piston are fixedly connected to the hydraulic piston through piston rods, respectively, and each of the first transmission tank and the second transmission tank is connected to at least one chamber in any one of the first cylinder body and the second cylinder body.

[0014] In some embodiments, when the hydraulic piston moves away from the first cylinder and approaches the second cylinder, the working liquid in the first transmission tank flows out, sucking in fluid, the working liquid in the second transmission tank increases, discharging fluid, and the working liquid in the separator is sprayed into the second transmission tank;

[0015] When the hydraulic piston moves away from the second cylinder body and approaches the first cylinder body, the working fluid in the second transmission tank flows out and fluid is sucked in, the working fluid in the first transmission tank increases and fluid is discharged, and the working fluid in the separator is sprayed into the first transmission tank.

[0016] In some embodiments, the reversing valve is driven by the oil supply and return of the hydraulic station or the pressure difference between the first transmission tank and the second transmission tank, so that the separator is alternately connected to the first transmission tank and the second transmission tank.

[0017] In some embodiments, the reversing valve comprises:

[0018] Drive cavity,

[0019] A driving piston, which separates the driving chamber into a first driving chamber and a second driving chamber, wherein the first driving chamber is connected to the first hydraulic chamber, and the second driving chamber is connected to the second hydraulic chamber;

[0020] The first transmission valve chamber and the second transmission valve chamber are respectively arranged on both sides of the driving chamber, the first transmission valve chamber is connected to the separator and the second transmission tank, and the second transmission valve chamber is connected to the separator and the first transmission tank.

[0021] The opposite ends of the driving piston are respectively located in the first transmission valve chamber and the second transmission valve chamber, and are configured to open one of the first transmission valve chamber and the second transmission valve chamber and close the other of the first transmission valve chamber and the second transmission valve chamber.

[0022] In some embodiments, the reversing valve further comprises:

[0023] A first spacing chamber is provided between the first transmission valve chamber and the first driving chamber, and the first end of the driving piston extends through the first spacing chamber into the first transmission valve chamber; and

[0024] The second spacing chamber is arranged between the second transmission valve chamber and the second driving chamber, and the second end of the driving piston passes through the second spacing chamber and extends into the second transmission valve chamber.

[0025] In some embodiments, the reversing valve comprises:

[0026] Drive transmission cavity, including:

[0027] a transmission chamber having a liquid inlet connected to the separator, a first liquid outlet connected to the first transmission tank, and a second liquid outlet connected to the second transmission tank; and

[0028] The first transmission chamber and the second transmission chamber are respectively located on both sides of the transmission chamber, and the first transmission chamber and the second transmission chamber are respectively connected to the first transmission tank and the second transmission tank;

[0029] A transmission piston, disposed in the drive transmission chamber, comprises:

[0030] A first piston end and a second piston end are arranged opposite to each other and are arranged in the first transmission chamber and the second transmission chamber respectively;

[0031] An isolation sealing member is located in the middle of the transmission piston, is disposed in the transmission chamber, and is configured to seal the first liquid outlet, the second liquid outlet or the liquid inlet.

[0032] In some embodiments, the reversing valve further comprises:

[0033] A first elastic member is disposed in the first transmission chamber and connects the first piston end and an inner wall of the first transmission chamber away from the first piston end;

[0034] A second elastic member is disposed in the second transmission cavity, connecting the second piston end and an inner wall of the second transmission cavity away from the second piston end;

[0035] Wherein, the first elastic member and the second elastic member have a tendency to keep the transmission piston at the second closed end closing the liquid inlet.

[0036] In some embodiments, the spray-cooled hydraulically driven liquid piston fluid delivery system further comprises:

[0037] The cooler is arranged on the pipeline through which the separator is connected to the fluid or on the pipeline through which the separator is connected to the reversing valve.

[0038] In some embodiments, a first spray nozzle is disposed on the inner wall of the top of the first transmission tank, the first spray nozzle is connected to the reversing valve through a first reflux pipe, and a first reflux check valve is disposed on the first reflux pipe; and / or

[0039] A second spray nozzle is disposed on the inner wall of the top of the second transmission tank. The second spray nozzle is connected to the reversing valve through a second reflux pipe. A second reflux check valve is disposed on the second reflux pipe.

[0040] Compared with the prior art, the above solution of the embodiment of the present disclosure has at least the following beneficial effects:

[0041] The hydraulically driven liquid piston fluid delivery system with liquid spray cooling provided by the present invention can compress and transmit fluid media with any gas-liquid ratio, and the compression ratio can be very high and almost unlimited. At the same time, the working liquid used for cooling is refluxed and sprayed into the transmission tank to avoid excessive temperature in the transmission tank, thereby ensuring that the hydraulically driven liquid piston fluid delivery system operates at a normal temperature. In the field of hydrogen energy, the moving parts of the delivery system do not come into contact with hydrogen, and there is no risk of hydrogen embrittlement. There is no need to use high-cost hydrogen embrittlement-resistant materials to manufacture moving parts that require precision processing, which can significantly reduce costs. At the same time, single-stage compression can be achieved to achieve a high compression ratio, reduce the number of compression stages, and simplify the structure to further save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A schematic diagram of the structure of a hydraulically driven liquid piston fluid delivery system for liquid spray cooling provided in some embodiments of the present disclosure is shown;

[0043] Figure 2 A schematic diagram of the structure of a reversing valve provided in some embodiments of the present disclosure;

[0044] Figure 3 A schematic diagram of the structure of a reversing valve provided in some embodiments of the present disclosure is shown;

[0045] Figure 4 A schematic diagram of the structure of a hydraulically driven liquid piston fluid delivery system for liquid spray cooling provided in some embodiments of the present disclosure is shown;

[0046] Figure 5 A schematic diagram of the structure of a reversing valve provided in some embodiments of the present disclosure, wherein the transmission piston is located in the middle position;

[0047] Figure 6 A schematic diagram of the structure of a reversing valve provided in some embodiments of the present disclosure, wherein the transmission piston is located at the right end position. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0049] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments, and are not intended to limit the present disclosure. The singular forms "a", "said" and "the" used in the embodiments of the present disclosure and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.

[0050] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0051] It should be understood that although the terms first, second, third, etc. may be used to describe structures in the disclosed embodiments, these structures should not be limited to these terms. These terms are only used to distinguish different structures. For example, without departing from the scope of the disclosed embodiments, a first component may also be referred to as a second component, and similarly, a second component may also be referred to as a first component.

[0052] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0053] It should also be noted that the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the commodity or device including the elements.

[0054] In the field of mixed oil and gas transportation, pump products cannot transport media with high gas content. Compression heat and friction heat may cause the temperature to rise and the rotor to lock, resulting in increased internal leakage and reduced efficiency. The lack of internal compression process further reduces efficiency. Compressor products cannot transport media with high liquid content. The liquid is not compressible or has very low compressibility, which will result in excessive load. Reciprocating compressors will experience gas valve liquid hammer, and rotary compressors have a fixed internal volume ratio, which will cause the rotor to get stuck and unable to rotate.

[0055] In the field of hydrogen energy, the moving parts in the compressor structure are usually made of metal materials. When they come into contact with hydrogen, hydrogen embrittlement will occur. Hydrogen atoms penetrate into the metal material, causing uneven stress distribution of the metal material, reduced strength and increased brittleness, which are prone to cracks and breakage, causing safety hazards. Hydrogen embrittlement-resistant materials are expensive, low in strength, and difficult to process, which will lead to excessively high costs for hydrogen compressors.

[0056] The present disclosure provides a hydraulically driven liquid piston fluid delivery system with liquid spray cooling, comprising: a first transmission tank and a second transmission tank, each of which is provided with an intake check valve and an exhaust check valve on the top, and is configured to alternately inhale and exhaust fluid; a liquid piston driving device, which is hydraulically driven and connected to the first transmission tank and the second transmission tank, and is configured to press working fluid into one of the first transmission tank and the second transmission tank to compress the working fluid and exhaust the fluid, and simultaneously extract the working fluid from the other of the first transmission tank and the second transmission tank to inhale the fluid; a separator, which accommodates working fluid and is configured to receive fluid exhausted from the first transmission tank and the second transmission tank, separate the transmitted fluid and the working fluid, and discharge the transmitted fluid, the separator being connected to the first transmission tank and the second transmission tank via a reversing valve, and being configured to alternately spray the working fluid inside the separator into the first transmission tank and the second transmission tank that exhaust the fluid.

[0057] The hydraulically driven liquid piston fluid delivery system with liquid spray cooling provided by the present invention can compress and transmit fluid media with any gas-liquid ratio, and the compression ratio can be very high and almost unlimited. At the same time, the working liquid used for cooling is refluxed and sprayed into the transmission tank to avoid excessive temperature in the transmission tank, thereby ensuring that the hydraulically driven liquid piston fluid delivery system operates at a normal temperature. In the field of hydrogen energy, the moving parts of the delivery system do not come into contact with hydrogen, and there is no risk of hydrogen embrittlement. There is no need to use high-cost hydrogen embrittlement-resistant materials to manufacture moving parts that require precision processing, which can significantly reduce costs. At the same time, single-stage compression can be achieved to achieve a high compression ratio, reduce the number of compression stages, and simplify the structure to further save costs.

[0058] The optional embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0059] Figure 1 The schematic diagram of the structure of the hydraulically driven liquid piston fluid delivery system with liquid spray cooling provided by some embodiments of the present disclosure is shown as follows: Figure 1 As shown, some embodiments of the present disclosure provide a hydraulically driven liquid piston fluid delivery system 100 with liquid spray cooling, wherein the hydraulically driven liquid piston fluid delivery system 100 includes: a first transmission tank 10 , a second transmission tank 20 , a liquid piston driving device 30 and a separator 80 .

[0060] The first transmission tank 10 and the second transmission tank 20 are, for example, arranged vertically side by side, and are provided with suction and discharge one-way valves 60 on the top, configured to alternately suck in and discharge fluid, and the fluid may be gas, liquid, or a mixture of gas and liquid. Figure 1 Arrows are used to indicate the inflow and outflow directions of the fluid. Each of the first transmission tank 10 and the second transmission tank 20 is connected to the fluid input pipe and the fluid output pipe. The first transmission tank 10 and the second transmission tank 20 alternately transmit the fluid, for example, to realize oil and gas collection in the weather gas field and to realize hydrogen pressurization and filling at the hydrogen filling station.

[0061] The liquid piston driving device 30 is connected to the first transmission tank 10 and the second transmission tank 20, and is hydraulically driven, and is configured to press the working liquid into one of the first transmission tank 10 and the second transmission tank 20 so that the head space of one of the first transmission tank 10 and the second transmission tank 20 is reduced, thereby compressing to discharge the fluid, and at the same time, the working liquid is drawn out of the other of the first transmission tank 10 and the second transmission tank 20 so that the head space of the other of the first transmission tank 10 and the second transmission tank 20 is increased to suck in the fluid, thereby realizing the alternating transmission of the fluid by the first transmission tank 10 and the second transmission tank 20. Different working liquids can be used according to different requirements. For example, when the transmission fluid is a natural gas wellhead oil-gas mixture, inert liquids such as oils, emulsifiers, and antifreeze can be used. When the transmission fluid is high-purity hydrogen, liquids with extremely low volatility such as ionic liquids can be used.

[0062] The separator 80 contains working liquid, and is configured to receive the fluid discharged from the first transmission tank 10 and the second transmission tank 20, separate the transmitted fluid and the working liquid, and discharge the transmitted fluid to realize the fluid transportation. The separator 80 is also connected to the first transmission tank 10 and the second transmission tank 20 through the reversing valve 90, and is configured to alternately spray the working liquid inside the separator 80 to the first transmission tank 10 and the second transmission tank 20 that discharge the fluid. When the fluid in the first transmission tank 10 or the second transmission tank 20 is compressed and discharged, the internal temperature of the first transmission tank 10 or the second transmission tank 20 will increase, affecting its working stability. By refluxing the working liquid inside the separator 80, especially the low-temperature working liquid, to the first transmission tank 10 or the second transmission tank 20, the internal temperature is reduced to ensure its normal operation. In the process of compressing and discharging the fluid in the first transmission tank 10 or the second transmission tank 20, the excess working liquid in the transmission tank can also be transmitted to the separator 80 with the fluid to form a cycle.

[0063] In some embodiments, Figure 1 As shown, the separator 80 includes a sealed chamber 81, in which the working liquid is contained, and a fluid output pipe is inserted into the sealed chamber 81 from the top of the sealed chamber 81. The fluid enters the sealed chamber 81 under the action of the first transmission tank 10 or the second transmission tank 20. A fluid overflow pipe is also provided at the top of the sealed chamber 81 for discharging the separated fluid.

[0064] In some embodiments, Figure 1 As shown, the liquid piston driving device 30 includes a hydraulic cylinder 31 , a hydraulic station 32 , a first cylinder body 33 and a second cylinder body 34 .

[0065] The hydraulic cylinder 31 includes a first hydraulic chamber 311 and a second hydraulic chamber 312 . The first hydraulic chamber 311 and the second hydraulic chamber 312 are filled with hydraulic oil. A hydraulic piston 40 is disposed inside the hydraulic cylinder.

[0066] The hydraulic station 32 includes a hydraulic pump, an oil tank and a hydraulic oil reversing mechanism. The hydraulic oil cooperates with the hydraulic oil reversing mechanism to alternately inject hydraulic oil into the first hydraulic chamber and the second hydraulic chamber, so that the volume of the first hydraulic chamber and the second hydraulic chamber is alternately increased or decreased and the hydraulic piston is driven to reciprocate in the hydraulic cylinder by the hydraulic oil. A hydraulic piston 40 is arranged inside the hydraulic cylinder 31. When the first hydraulic chamber 311 is connected to the high-pressure hydraulic oil output by the hydraulic pump and the second hydraulic chamber 312 is connected to the hydraulic oil tank with normal pressure, the hydraulic piston 40 moves to the right in the hydraulic cylinder 31. When the hydraulic piston 40 moves to the right dead point, the hydraulic oil reversing mechanism reverses, the first hydraulic chamber 311 is connected to the hydraulic oil tank with normal pressure and the second hydraulic chamber 312 is connected to the high-pressure hydraulic oil output by the hydraulic pump, and the hydraulic piston 40 moves to the left in the hydraulic cylinder. When it moves to the left dead point, the hydraulic oil reversing mechanism reverses again, and so on.

[0067] The first cylinder body 33 and the second cylinder body 34 are respectively arranged on both sides of the hydraulic cylinder 31. The interior of the first cylinder body 31 is divided into a first chamber 331 and a second chamber 332 by the first piston 51. The interior of the second cylinder body 34 is divided into a third chamber 341 and a fourth chamber 342 by the second piston 52. The first chamber 331, the second chamber 332, the third chamber 341 and the fourth chamber 342 are filled with working fluid.

[0068] The first piston 51 and the second piston 52 are fixedly connected to the hydraulic piston 40 via piston rods, respectively. Each of the first transmission tank 10 and the second transmission tank 20 is connected to at least one chamber in any one of the first cylinder 33 and the second cylinder 34 .

[0069] In some embodiments, Figure 1 As shown, the first transmission tank 10 is connected to the first chamber 331 of the first cylinder 33 and the third chamber 341 of the second cylinder 34 through a pipeline, and the working fluid can be transferred between the first transmission tank 10 and the first chamber 331, and between the first transmission tank 10 and the third chamber 341. The second transmission tank 20 is connected to the second chamber 332 of the first cylinder 33 and the fourth chamber 342 of the second cylinder 34 through a pipeline, and the working fluid can be transferred between the second transmission tank 20 and the second chamber 331, and between the second transmission tank 20 and the fourth chamber 342.

[0070] In some embodiments, Figure 1As shown, each of the first transmission tank 10 and the second transmission tank 20 is connected to the fluid input pipe through a one-way valve 60 so that the upstream fluid can only flow into the transmission tank in one direction. Specifically, the first transmission tank 10 is connected to the fluid input pipe through the first one-way valve 61, and the second transmission tank 20 is connected to the fluid input pipe through the second one-way valve 62 to avoid fluid backflow. Each of the first transmission tank 10 and the second transmission tank 20 is connected to the fluid output pipe through the one-way valve 60 so that the fluid can only flow out of the transmission tank to the downstream in one direction. Specifically, the first transmission tank 10 is connected to the fluid output pipe through the third one-way valve 63, and the second transmission tank 20 is connected to the fluid input pipe through the fourth one-way valve 64 to avoid fluid backflow.

[0071] In some embodiments, Figure 1 As shown, when the hydraulically driven liquid piston fluid delivery system 100 is working, in the process of the hydraulic piston 40 moving away from the first cylinder body 33 and approaching the second cylinder body 34, the working fluid in the first transmission tank 10 flows out, for example, flows out to the first chamber 331 and the third chamber 341, and at the same time, the space at the top of the first transmission tank 10 increases to inhale the fluid, and the working fluid in the second transmission tank 20 increases, and the working fluid in the second chamber 332 and the fourth chamber 342 flows into the second transmission tank 20, the working fluid in the second transmission tank 20 increases and the top space decreases, the fluid is compressed or discharged, and the working fluid inside the separator 80 is sprayed into the second transmission tank 20 to reduce the temperature in the second transmission tank 20.

[0072] When the hydraulic piston 40 moves away from the second cylinder body 20 and approaches the first cylinder body 10, the working fluid in the second transmission tank 20 flows out, for example, flows out to the second chamber 332 and the fourth chamber 342, and the fluid is sucked in. At the same time, the space at the top of the second transmission tank 20 increases to suck in the fluid, and the working fluid in the first transmission tank 10 increases. The working fluid in the first chamber 331 and the third chamber 341 flows into the first transmission tank 10. The working fluid in the first transmission tank 10 increases and the top space decreases, compressing or discharging the fluid. The working fluid inside the separator 80 is sprayed into the first transmission tank 10 to reduce the temperature in the first transmission tank 10.

[0073] In some embodiments, Figure 1 As shown, the hydraulic piston 40 separates the first hydraulic chamber 311 and the second hydraulic chamber 312. The first piston 51 and the second piston 52 are respectively fixedly connected to the hydraulic piston 40 through piston rods, and the three move together.

[0074] In some embodiments, Figure 1The reversing valve 90 is driven by the oil supply and return of the hydraulic station 32, so that the separator 90 is alternately connected to the first transmission tank 10 and the second transmission tank 20, so as to alternately spray cooling working liquid to the first transmission tank 10 and the second transmission tank 20, thereby cooling the inside of the first transmission tank 10 and the second transmission tank 20.

[0075] Figure 2 A schematic diagram of a reversing valve provided in some embodiments of the present disclosure. In some embodiments, Figure 1 and Figure 2 As shown, the reversing valve 90 includes a driving chamber 91 , a driving piston 92 , a first transmission valve chamber 931 and a second transmission valve chamber 932 .

[0076] The driving piston 92 is disposed in the driving chamber 91, dividing the driving chamber 91 into a first driving chamber 911 and a second driving chamber 912. The first driving chamber 911 is connected to the first hydraulic chamber 311, and the second driving chamber 912 is connected to the second hydraulic chamber 312. The driving piston 92 and the hydraulic piston 40 are both driven by the hydraulic station 32. Specifically, the first driving chamber 911 has a first driving liquid inlet 9111, which is connected to one end of the hydraulic station 32 and is connected to the first hydraulic chamber 311. The second driving chamber 912 has a second driving liquid inlet 9121, which is connected to the other end of the hydraulic station 32 and is connected to the second hydraulic chamber 312.

[0077] The first transmission valve chamber 931 and the second transmission valve chamber 932 are respectively arranged on both sides of the driving chamber 91, and the first transmission valve chamber 931 is connected to the separator 80 and the second transmission tank 20. Specifically, the first transmission valve chamber 931 has a first inlet 9311 and a first outlet 9312, the first inlet 9311 is connected to the separator 80 through the return pipe, and the first outlet 9312 is connected to the second transmission tank 20 through the second return pipe. The first transmission valve chamber 932 is connected to the separator 80 and the first transmission tank 10, specifically, the second transmission valve chamber 932 has a second inlet 9321 and a second outlet 9322, the second inlet 9321 is connected to the separator 80 through the return pipe, and the second outlet 9322 is connected to the first transmission tank 10 through the first return pipe.

[0078] The opposite ends of the driving piston 92 are respectively located in the first transmission valve chamber 931 and the second transmission valve chamber 932, and are configured to open one of the first transmission valve chamber 931 and the second transmission valve chamber 932 and close the other of the first transmission valve chamber 931 and the second transmission valve chamber 932. Specifically, the driving piston 92 includes a first end 921 and a second end 922 that are arranged opposite to each other, and the first end 921 and the second end 922 are respectively located in the first transmission valve chamber 931 and the second transmission valve chamber 932. When the driving piston 92 moves to the right side under the action of the hydraulic station 32, the first end 921 is away from the first inlet 9311, the first transmission valve chamber 931 is opened, the second end 922 blocks the second inlet 9321, and the second transmission valve chamber 932 is closed. When the driving piston 92 moves to the left side under the action of the hydraulic station 32, the first end 921 blocks the first inlet 9311, the first transmission valve chamber 931 is closed, the second end 922 is away from the second inlet 9321, and the second transmission valve chamber 932 is opened.

[0079] The following combination Figure 1 and Figure 2 introduce Figure 1 The specific working process of the hydraulically driven liquid piston fluid delivery system with liquid spray cooling.

[0080] After the spray-cooled hydraulically driven liquid piston fluid delivery system 100 is started, the hydraulic station 32 injects high-pressure hydraulic oil into the first hydraulic chamber 311 of the hydraulic cylinder 31, pushing the hydraulic piston 40 away from the first cylinder body 33 and closer to the second cylinder body 34. Figure 1The hydraulic piston 40 pushes the low-pressure hydraulic oil in the second hydraulic chamber 312 to be recovered to the oil tank in the hydraulic station 32. The movement of the hydraulic piston 40 drives the first piston 51 and the second piston 52 to move rightward synchronously. At this time, the working liquid in the first transmission tank 10 flows into the first chamber 331 and the third chamber 341 through the pipeline, the top space in the first transmission tank 10 increases, and the pressure decreases. When the pressure is lower than the fluid input pipe, the first check valve 61 opens, and the fluid, such as gas, liquid or gas-liquid mixture, is sucked into the first transmission tank 10, and the third check valve 63 is in a closed state; at the same time, the working liquid in the second chamber 332 and the fourth chamber 342 flows into the second transmission tank 20 through the pipeline, the top space in the second transmission tank 20 decreases, and the pressure increases. When the pressure is higher than the internal pressure of the separator 80, the fourth check valve 64 opens, and the fluid, such as gas, liquid or gas-liquid mixture, is pushed out of the second transmission tank 20 by the working liquid and enters the separator 80 through the fluid output pipe, and the second check valve 62 is in a closed state. At the same time, the high-pressure hydraulic oil output by the hydraulic station 32 pushes the driving piston 92 to move to the right, the first transmission valve chamber 931 is opened, and the second transmission valve chamber 932 is closed. The separator 80 is connected to the second transmission tank 20 through the first transmission valve chamber 931, and compression is performed in the second transmission tank 20. During the process of increasing the internal pressure, the working fluid in the separator 80 with a higher pressure flows back to the second transmission tank 20 through the first transmission valve chamber 931 for spraying until the pressure in the second transmission tank 20 reaches the pressure inside the separator 80.

[0081] In some embodiments, when the synchronously moving piston assembly consisting of the hydraulic piston 40, the first piston 51 and the second piston 52 moves to the rightmost end, the working fluid fills the second transmission tank 20, and the fluid in the second transmission tank 20 is basically completely discharged, and a portion of the working fluid is also discharged to the separator 80 through the fluid output pipe along with the fluid.

[0082] Subsequently, the hydraulic reversing mechanism in the hydraulic station 32 reverses the hydraulic oil circuit and injects high-pressure hydraulic oil into the second hydraulic chamber 312 of the hydraulic cylinder 31, pushing the hydraulic piston 40 away from the second cylinder body 34 and closer to the first cylinder body 33. Figure 1The hydraulic piston 40 pushes the low-pressure hydraulic oil in the first hydraulic chamber 311 to be recovered to the oil tank in the hydraulic station 32. The movement of the hydraulic piston 40 drives the first piston 51 and the second piston 52 to move to the left synchronously. At this time, the working liquid in the second transmission tank 20 flows into the second chamber 332 and the fourth chamber 342 through the pipeline, and the top space in the second transmission tank 20 increases and the pressure decreases. When the pressure is lower than the fluid input pipe, the second one-way valve 62 opens, and the fluid, such as gas, liquid or gas-liquid mixture, is sucked into the second transmission tank 20, and the fourth one-way valve 64 is in a closed state; at the same time, the working liquid in the first chamber 331 and the third chamber 341 flows into the first transmission tank 10 through the pipeline, and the top space in the first transmission tank 10 decreases and the pressure increases. When the pressure is higher than the internal pressure of the separator 80, the third one-way valve 63 opens, and the fluid, such as gas, liquid or gas-liquid mixture, is pushed by the working liquid to be discharged from the first transmission tank 10 and enter the separator 80 through the fluid output pipe, and the first one-way valve 61 is in a closed state. At the same time, the high-pressure hydraulic oil output by the hydraulic station 32 pushes the driving piston 92 to move to the left, the second transmission valve chamber 932 is opened, the first transmission valve chamber 931 is closed, and the separator 80 is connected to the first transmission tank 10 through the second transmission valve chamber 932. During the compression performed in the first transmission tank 10 and the increase of its internal pressure, the working fluid in the separator 80 with a higher pressure flows back to the first transmission tank 10 through the second transmission valve chamber 932 for spraying until the pressure in the first transmission tank 10 reaches the pressure inside the separator 80.

[0083] In some embodiments, when the synchronously moving piston assembly consisting of the hydraulic piston 40, the first piston 51 and the second piston 52 moves to the leftmost end, the working fluid fills the first transmission tank 10, and the fluid in the first transmission tank 10 is basically completely discharged, and a portion of the working fluid is also discharged to the separator 80 through the fluid output pipe along with the fluid.

[0084] The hydraulically driven liquid piston fluid delivery system with liquid spray cooling in the embodiment of the present disclosure can compress and transmit media with any gas-liquid ratio. The compression ratio can be very high and almost unlimited, and can be applied to the fields of oil and gas acquisition and hydrogen energy. When the fluid entering the first transmission tank 10 or the second transmission tank 20 is all gas, the total liquid volume of the liquid piston working liquid remains unchanged. When the fluid entering the first transmission tank 10 or the second transmission tank 20 is liquid or a gas-liquid mixture, since the working volume of the hydraulic piston is certain, the inhaled liquid will be discharged during the rising process of the liquid level in the transmission tank. The hydraulically driven liquid piston fluid delivery system 100 with liquid spray cooling can deliver media with any gas-liquid ratio of 0-100%. At the same time, the working liquid used for cooling is refluxed and sprayed into the transmission tank of the discharged fluid to avoid excessive temperature in the transmission tank and ensure that the hydraulically driven liquid piston fluid delivery system works at normal temperature. The hydraulically driven liquid piston fluid delivery system with spray cooling installs the inlet and outlet check valves on the top of the transmission tank body. The clearance volume is very small. At the same time, since the specific heat of liquid is much greater than that of gas, its exhaust temperature rise is also easier to control. With this structure, a very high compression ratio can be achieved in one stage of compression, which is almost not limited by the compression ratio.

[0085] Figure 3 shows a schematic diagram of the reversing valve structure provided by some embodiments of the present disclosure, Figure 3 The reversing valve shown in Figure 2 The structure of the reversing valve shown in is basically the same as Figure 3 As shown, some embodiments of the present disclosure also provide a reversing valve 90' ​​for Figure 1 In the hydraulically driven liquid piston fluid delivery system 100 for liquid spray cooling, the Figure 2 The differences of the reversing valve 90 shown are as follows:

[0086] The reversing valve 90' ​​further includes a first partition cavity 941 and a second partition cavity 942. The first partition cavity 941 is arranged between the first transmission valve cavity 931 and the first drive cavity 911, and the first end 921 of the drive piston 92 extends into the first transmission valve cavity 931 through the first partition cavity 941. The second partition cavity 942 is arranged between the second transmission valve cavity 932 and the second drive cavity 912, and the second end 922 of the drive piston 92 extends into the second transmission valve cavity 932 through the second partition cavity 942. The first partition cavity 941 serves to isolate the first transmission valve cavity 931 from the first drive cavity 911, thereby preventing the working fluid in the first transmission valve cavity 931 from being contaminated with the hydraulic oil in the first drive cavity 911. The second partition cavity 942 serves to isolate the second transmission valve cavity 932 from the second drive cavity 912, thereby preventing the working fluid in the second transmission valve cavity 932 from being contaminated with the hydraulic oil in the second drive cavity 912.

[0087] Figure 4 The schematic diagram of the structure of the hydraulically driven liquid piston fluid delivery system for liquid spray cooling provided by some embodiments of the present disclosure is shown. Figure 4 The hydraulic drive liquid piston fluid delivery system with spray cooling shown in Figure 1 The principle of the hydraulically driven liquid piston fluid delivery system with liquid spray cooling shown in is basically the same, but the structure is different, such as Figure 4 As shown, some embodiments of the present disclosure also provide a hydraulically driven liquid piston fluid delivery system 100' for liquid spray cooling, which is Figure 1 The differences of the spray-cooled hydraulically driven liquid piston fluid delivery system 100 shown are as follows:

[0088] The hydraulic cylinder 31 has Figure 1 The embodiment shown in FIG. 1 is similar to the first hydraulic chamber 311' and the second hydraulic chamber 312', which further includes a first isolation chamber 313 and a second isolation chamber 314. The first isolation chamber 313 is arranged on the side of the first hydraulic chamber 311' close to the first cylinder body 33; the second isolation chamber 314 is arranged on the side of the second hydraulic chamber 312' close to the second cylinder body 34.

[0089] The hydraulic cylinder 31 is provided with a partition wall 315, and the partition wall 315 separates the first hydraulic chamber 311' and the second hydraulic chamber 312'. The hydraulic piston 40' includes a first hydraulic piston 41 and a second hydraulic piston 42 fixedly connected by a piston rod, and the first hydraulic piston 41 separates the first isolation chamber 313 and the first hydraulic chamber 311', and the second hydraulic piston 42 separates the second isolation chamber 314 and the second hydraulic chamber 312'. Since the first isolation chamber 313 and the second isolation chamber 314 are provided, mutual contamination between hydraulic oil and working fluid can be avoided. Specifically, the part of the piston rod in contact with the working fluid will not contact the hydraulic oil, and the part of the piston rod in contact with the hydraulic oil will not contact the working fluid.

[0090] The reversing valve 90" in the hydraulically driven liquid piston fluid delivery system 100' with liquid spray cooling is driven by the pressure difference between the first transmission tank 10 and the second transmission tank 20. Specifically, the control part of the reversing valve 90" is connected to the bottom of the first transmission tank 10 and the second transmission tank 20, and the state of the reversing valve 90" is controlled based on the pressure difference between the first transmission tank 10 and the second transmission tank 20, thereby controlling the connection and disconnection between the separator 80 and the first transmission tank 10 or the second transmission tank 20, so as to realize the working liquid inside the separator being alternately sprayed into the first transmission tank 10 and the second transmission tank 20 of the discharged fluid.

[0091] In this embodiment, the hydraulic cylinder 31 is provided with an isolation chamber, and a reversing valve 90" driven by the pressure difference between the first transmission tank 10 and the second transmission tank 20 is used to replace the reversing valve 90 driven by hydraulic oil, thereby substantially completely preventing the mutual contamination between the working fluid and the hydraulic oil.

[0092] Figure 5 This is a schematic diagram of the structure of a reversing valve provided in some embodiments of the present disclosure, wherein the transmission piston is located in the middle position. Figure 6 A schematic diagram of a reversing valve provided in some embodiments of the present disclosure, wherein the transmission piston is located at the right end. Figures 4 to 6 As shown, the reversing valve 90 ″ includes a drive transmission chamber 95 and a transmission piston 96 .

[0093] The driving transmission chamber 95 includes a transmission chamber 953, a first transmission chamber 951, and a second transmission chamber 952. The transmission chamber 953 has a liquid inlet 9533 connected to the separator 80, a first liquid outlet 9531 connected to the first transmission tank 10, and a second liquid outlet 9532 connected to the second transmission tank 20. The first transmission chamber 951 and the second transmission chamber 952 are respectively located on both sides of the transmission chamber 953, and the first transmission chamber 951 and the second transmission chamber 952 are respectively connected to the first transmission tank 10 and the second transmission tank 20. Specifically, the first transmission chamber 951 has a first communication port 9511, which is connected to the bottom of the first transmission tank 10. The second transmission chamber 952 has a second communication port 9521, which is connected to the bottom of the second transmission tank 20.

[0094] The transmission piston 96 is disposed in the drive transmission chamber 95, and the transmission piston 96 includes a first piston end 961 and a second piston end 962 that are disposed opposite to each other, and the first piston end 961 and the second piston end 962 are disposed in the first transmission chamber 951 and the second transmission chamber 952, respectively. Specifically, the main structure of the transmission piston 96 is substantially a columnar structure, such as a cylindrical structure, and the first piston end 961 and the second piston end 962 are located at the two ends of the columnar structure. The pressure in the first transmission tank 10 and the second transmission tank 20 acts on the end surfaces of the first piston end 961 and the second piston end 962, respectively, and the pressure difference between the first transmission tank 10 and the second transmission tank 20 can act on the transmission piston 96 to drive the transmission piston 96 to move left and right in the drive transmission chamber 95.

[0095] The transmission piston 96 further includes an isolation sealing member 963, which is located in the middle of the transmission piston 96, disposed in the transmission chamber 953, and configured to seal the first liquid outlet 9531, the second liquid outlet 9532, or the liquid inlet 9533. Specifically, the isolation sealing member 963 is located in the middle of the main structure, and extends from the column structure away from the main structure, and the whole is an annular piston structure. The isolation sealing member 963 is located in the transmission chamber 953 to separate the transmission chamber 953 into two chambers.

[0096] When the isolation sealing member 963 is located in the middle position, the isolation sealing member 963 closes the liquid inlet 9533. When the isolation sealing member 963 is located at the left end position, the isolation sealing member 963 closes the first liquid outlet 9531, and the liquid inlet 9533 and the second liquid outlet 9532 are in a connected state. When the isolation sealing member 963 is located at the right end position, the isolation sealing member 963 closes the second liquid outlet 9532, and the liquid inlet 9533 and the first liquid outlet 9531 are in a connected state.

[0097] In some embodiments, Figure 5 and Figure 6 As shown, the reversing valve 90" also includes a first elastic member 971 and a second elastic member 972. The first elastic member 971 is arranged in the first transmission chamber 951, connecting the first piston end 961 and the inner wall of the first transmission chamber 951 away from the first piston end; the second elastic member 972 is arranged in the second transmission chamber 952, connecting the second piston end 962 and the inner wall of the second transmission chamber 952 away from the second piston end. The first elastic member 971 and the second elastic member 972 have a tendency to keep the transmission piston 96 at the second closed end 964 to close the liquid inlet 9533. The first elastic member 971 and the second elastic member 972 are, for example, springs.

[0098] Under the pressure difference between the first transmission tank 10 and the second transmission tank 20 and the combined effect of the first elastic member 971 and the second elastic member 972, the transmission piston 96 can Figure 5 The middle position shown, Figure 6 The separator 80 is switched between the right end position shown and the left end position (not shown in the figure), thereby controlling the on-off connection between the separator 80 and the first transmission tank 10 or the second transmission tank 20, so that the working liquid inside the separator is alternately sprayed into the first transmission tank 10 and the second transmission tank 20 of the discharged fluid.

[0099] The following combination Figures 4 to 6 introduce Figure 4 The specific working process of the hydraulically driven liquid piston fluid delivery system with liquid spray cooling.

[0100] After the spray-cooled hydraulically driven liquid piston fluid delivery system 100 is started, the hydraulic station 32 injects high-pressure hydraulic oil into the first hydraulic chamber 311' of the hydraulic cylinder 31, pushing the hydraulic piston 40' to move closer to the first cylinder body 33 and away from the second cylinder body 34. Figure 4 The hydraulic piston 40' moves to the left, and the hydraulic piston 40' pushes the low-pressure hydraulic oil in the second hydraulic chamber 312' to be recovered to the oil tank in the hydraulic station 32. The movement of the hydraulic piston 40' drives the first piston 51 and the second piston 52 to move to the left synchronously. At this time, the working liquid in the second transmission tank 20 flows into the second chamber 332 and the fourth chamber 342 through the pipeline, the top space in the second transmission tank 20 increases, and the pressure decreases. When the pressure is lower than the fluid input pipe, the second one-way valve 62 opens, and the fluid, such as gas, liquid or gas-liquid mixture, is sucked into the second transmission tank 20, and the fourth one-way valve 64 is in a closed state; at the same time, the working liquid in the first chamber 331 and the third chamber 341 flows into the first transmission tank 10 through the pipeline, the top space in the first transmission tank 10 decreases, and the pressure increases. When the pressure is higher than the internal pressure of the separator 80, the third one-way valve 63 opens, and the fluid, such as gas, liquid or gas-liquid mixture, is pushed out of the first transmission tank 10 by the working liquid and enters the separator 80 through the fluid output pipe, and the first one-way valve 61 is in a closed state. In the above process, the first transmission tank 10 compresses the fluid therein, and the pressure is significantly greater than the internal pressure of the second transmission tank 20 that inhales the fluid, and the pressure in the first transmission tank 10 continues to increase. The transmission piston 96 switches to the right end position under the action of the pressure difference between the first transmission tank 10 and the second transmission tank 20, and the closed end 963 closes the second liquid outlet 9532 of the transmission chamber 953. The first liquid outlet 9531 and the liquid inlet 9533 of the transmission chamber 953 are in a connected state. The working liquid in the separator 80 with a higher pressure flows back to the first transmission tank 10 through the transmission chamber 953 for spraying.

[0101] In some embodiments, when the synchronously moving piston assembly consisting of the hydraulic piston 40', the first piston 51 and the second piston 52 moves to the leftmost end, the working fluid fills the first transmission tank 10, and the fluid in the first transmission tank 10 is basically completely discharged, and a portion of the working fluid is also discharged to the separator 80 through the fluid output pipe along with the fluid.

[0102] Subsequently, the hydraulic reversing mechanism in the hydraulic station 32 reverses the hydraulic oil circuit. At the moment when the hydraulic reversing mechanism in the hydraulic station 32 reverses the hydraulic oil circuit, the pressure in the first transmission tank 10 is rapidly reduced to the inlet pipeline pressure, which is approximately equal to the pressure in the second transmission tank 20. The transmission piston 96 is switched to the middle position under the action of the first elastic member 971 and the second elastic member 972, and the closed end 963 closes the liquid inlet 9533 of the transmission chamber 953, blocking the backflow of the working liquid in the separator 80.

[0103] As the hydraulic station 32 injects high-pressure hydraulic oil into the second hydraulic chamber 312' of the hydraulic cylinder 31, the hydraulic piston 40' is pushed away from the first cylinder body 33 and moves closer to the second cylinder body 34. Figure 4 The hydraulic piston 40' moves to the right, and the hydraulic piston 40' pushes the low-pressure hydraulic oil in the first hydraulic chamber 311' to be recovered to the oil tank in the hydraulic station 32. The movement of the hydraulic piston 40' drives the first piston 51 and the second piston 52 to move to the right synchronously. At this time, the working liquid in the first transmission tank 10 flows into the first chamber 331 and the third chamber 341 through the pipeline, and the top space in the first transmission tank 10 increases and the pressure decreases. When the pressure is lower than the fluid input pipe, the first check valve 61 opens, and the fluid, such as gas, liquid or gas-liquid mixture, is sucked into the first transmission tank 10, and the third check valve 63 is in a closed state; at the same time, the working liquid in the second chamber 332 and the fourth chamber 342 flows into the second transmission tank 20 through the pipeline, and the top space in the second transmission tank 20 decreases and the pressure increases. When the pressure is higher than the separator 80, the fourth check valve 64 opens, and the fluid, such as gas, liquid or gas-liquid mixture, is pushed by the working liquid and discharged from the second transmission tank 20 and enters the separator 80 through the fluid output pipe, and the second check valve 62 is in a closed state. In the above process, the second transmission tank 20 compresses the fluid therein, and the pressure is significantly greater than that of the first transmission tank 10 that inhales the fluid, and the pressure in the second transmission tank 20 continues to increase. The transmission piston 96 moves to the left end position under the action of the pressure difference between the second transmission tank 20 and the first transmission tank 10, and the closed end 963 closes the first liquid outlet 9531 of the transmission chamber 953. The second liquid outlet 9532 and the liquid inlet 9533 of the transmission chamber 953 are in a connected state. The working liquid in the separator 80 with a higher pressure flows back to the second transmission tank 20 through the transmission chamber 953 for spraying.

[0104] In some embodiments, Figure 1 As shown, the liquid-spray-cooled hydraulically driven liquid piston fluid delivery system 100 further includes a cooler 70, which is disposed on a pipeline connecting the separator 80 to the reversing valve 90, 90". The cooler 70 is used to cool the refluxed working fluid, so that the low-temperature working fluid refluxes to the first transmission tank 10 or the second transmission tank 20 of the discharged fluid, thereby reducing its working temperature and ensuring its working stability.

[0105] In some embodiments, Figure 4 As shown, the cooler 70 can also be arranged in the pipeline where the separator 80 is connected to the fluid, that is, on the fluid output pipe to which it is connected, to reduce the temperature of the fluid entering the separator 80.

[0106] In some embodiments, the cooler 70 may also be disposed on the pipeline of the fluid discharged from the separator 80 to cool the separated and discharged fluid.

[0107] In some embodiments, Figure 1 and Figure 4 As shown, a first spray nozzle is provided on the top inner wall of the first transmission tank 10, and the first spray nozzle is connected to the reversing valve 90, 90" through a first return pipe. A first return check valve 65 is provided on the first return pipe to ensure one-way flow of the working liquid for cooling spraying.

[0108] In some embodiments, a second spray nozzle is provided on the top inner wall of the second transmission tank 20, and the second spray nozzle is connected to the reversing valve through a second return pipe. A second return check valve 66 is provided on the second return pipe to ensure one-way flow of the working liquid for cooling spraying.

[0109] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. For the system or device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0110] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A hydraulically driven liquid piston fluid delivery system with liquid spray cooling, characterized in that: include: The first transmission tank and the second transmission tank are provided with a suction check valve and a discharge check valve on the top, and are configured to alternately suck in and discharge the fluid; a liquid piston driving device, which is hydraulically driven, is connected to the first transmission tank and the second transmission tank, and is configured to press the working liquid into one of the first transmission tank and the second transmission tank to compress and discharge the fluid, and simultaneously draw the working liquid out of the other of the first transmission tank and the second transmission tank to inhale the fluid; The separator contains working fluid and is configured to receive fluid discharged from the first transmission tank and the second transmission tank, separate the transmitted fluid and the working fluid, and discharge the transmitted fluid. The separator is connected to the first transmission tank and the second transmission tank through a reversing valve and is configured to alternately spray the working fluid inside the separator into the first transmission tank and the second transmission tank that discharge the fluid.

2. The spray-cooled hydraulically driven liquid piston fluid delivery system according to claim 1, characterized in that: The liquid piston drive device comprises: The hydraulic cylinder comprises a first hydraulic chamber and a second hydraulic chamber, wherein the first hydraulic chamber and the second hydraulic chamber are filled with hydraulic oil, and a hydraulic piston is arranged inside the hydraulic cylinder; a hydraulic station, which is in communication with the hydraulic cylinder and includes a hydraulic pump and a hydraulic oil reversing mechanism, wherein the hydraulic oil cooperates with the hydraulic oil reversing mechanism to alternately inject hydraulic oil into the first hydraulic chamber and the second hydraulic chamber, so that the volumes of the first hydraulic chamber and the second hydraulic chamber are alternately increased or decreased and the hydraulic piston is driven by the hydraulic oil to reciprocate in the hydraulic cylinder; and The first cylinder body and the second cylinder body are respectively arranged on both sides of the hydraulic cylinder. The interior of the first cylinder body is divided into a first chamber and a second chamber by a first piston. The interior of the second cylinder body is divided into a third chamber and a fourth chamber by a second piston. The first chamber, the second chamber, the third chamber and the fourth chamber are filled with working fluid. The first piston and the second piston are fixedly connected to the hydraulic piston through piston rods, respectively, and each of the first transmission tank and the second transmission tank is connected to at least one chamber in any one of the first cylinder body and the second cylinder body.

3. The spray-cooled hydraulically driven liquid piston fluid delivery system according to claim 2, characterized in that: When the hydraulic piston moves away from the first cylinder and approaches the second cylinder, the working liquid in the first transmission tank flows out, the fluid is sucked in, the working liquid in the second transmission tank increases, the fluid is discharged, and the working liquid in the separator is sprayed into the second transmission tank; When the hydraulic piston moves away from the second cylinder body and approaches the first cylinder body, the working fluid in the second transmission tank flows out and fluid is sucked in, the working fluid in the first transmission tank increases and fluid is discharged, and the working fluid in the separator is sprayed into the first transmission tank.

4. The spray-cooled hydraulically driven liquid piston fluid delivery system according to claim 2 or 3, characterized in that: The reversing valve is driven by the oil supply and return of the hydraulic station or the pressure difference between the first transmission tank and the second transmission tank, so that the separator is alternately connected to the first transmission tank and the second transmission tank.

5. The spray-cooled hydraulically driven liquid piston fluid delivery system according to claim 2 or 3, characterized in that: The reversing valve comprises: Drive cavity, A driving piston, which separates the driving chamber into a first driving chamber and a second driving chamber, wherein the first driving chamber is connected to the first hydraulic chamber, and the second driving chamber is connected to the second hydraulic chamber; The first transmission valve chamber and the second transmission valve chamber are respectively arranged on both sides of the driving chamber, the first transmission valve chamber is connected to the separator and the second transmission tank, and the second transmission valve chamber is connected to the separator and the first transmission tank. The opposite ends of the driving piston are respectively located in the first transmission valve chamber and the second transmission valve chamber, and are configured to open one of the first transmission valve chamber and the second transmission valve chamber and close the other of the first transmission valve chamber and the second transmission valve chamber.

6. The spray-cooled hydraulically driven liquid piston fluid delivery system according to claim 5, characterized in that: The reversing valve further comprises: A first spacing chamber is provided between the first transmission valve chamber and the first driving chamber, and the first end of the driving piston extends through the first spacing chamber into the first transmission valve chamber; and The second spacing chamber is arranged between the second transmission valve chamber and the second driving chamber, and the second end of the driving piston passes through the second spacing chamber and extends into the second transmission valve chamber.

7. The spray-cooled hydraulically driven liquid piston fluid delivery system according to claim 2 or 3, characterized in that: The reversing valve comprises: Drive transmission cavity, including: a transmission chamber having a liquid inlet connected to the separator, a first liquid outlet connected to the first transmission tank, and a second liquid outlet connected to the second transmission tank; and The first transmission chamber and the second transmission chamber are respectively located on both sides of the transmission chamber, and the first transmission chamber and the second transmission chamber are respectively connected to the first transmission tank and the second transmission tank; A transmission piston, disposed in the drive transmission chamber, comprises: A first piston end and a second piston end are arranged opposite to each other and are arranged in the first transmission chamber and the second transmission chamber respectively; An isolation sealing member is located in the middle of the transmission piston, is disposed in the transmission chamber, and is configured to seal the first liquid outlet, the second liquid outlet or the liquid inlet.

8. The spray-cooled hydraulically driven liquid piston fluid delivery system according to claim 7, characterized in that: The reversing valve further comprises: A first elastic member is disposed in the first transmission chamber and connects the first piston end and an inner wall of the first transmission chamber away from the first piston end; A second elastic member is disposed in the second transmission cavity, connecting the second piston end and an inner wall of the second transmission cavity away from the second piston end; Wherein, the first elastic member and the second elastic member have a tendency to keep the transmission piston at the second closed end closing the liquid inlet.

9. The spray-cooled hydraulically driven liquid piston fluid delivery system according to claim 2 or 3, characterized in that: The spray-cooled hydraulically driven liquid piston fluid delivery system also includes: The cooler is arranged on the pipeline through which the separator is connected to the fluid or on the pipeline through which the separator is connected to the reversing valve.

10. The spray-cooled hydraulically driven liquid piston fluid delivery system according to any one of claims 1 to 3, characterized in that: A first spray nozzle is disposed on the inner wall of the top of the first transmission tank, the first spray nozzle is connected to the reversing valve through a first reflux pipe, and a first reflux check valve is disposed on the first reflux pipe; and / or A second spray nozzle is disposed on the inner wall of the top of the second transmission tank. The second spray nozzle is connected to the reversing valve through a second reflux pipe. A second reflux check valve is disposed on the second reflux pipe.

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