Gas compression and liquefaction integrated device

Abstract

The utility model relates to the technical field of gas treatment equipment, in particular to a gas compression and liquefaction integrated device which comprises a compression and liquefaction integrated tank, a gas inlet pipe is arranged on the outer wall of the compression and liquefaction integrated tank, a U-shaped mounting plate is arranged at the top of the compression and liquefaction integrated tank, and a hydraulic cylinder is arranged in the middle of the top of the U-shaped mounting plate. A movable rod of the hydraulic cylinder penetrates through the top of the compression and liquefaction integrated tank and is fixedly connected with a compression plate, a refrigeration outer tank is arranged on the outer side of the compression and liquefaction integrated tank, a spiral refrigeration pipe is arranged in the refrigeration outer tank, and a liquid outlet pipe is arranged at the bottom of the compression and liquefaction integrated tank. According to the gas compressing and liquefying integrated device, the refrigerating outer tank is arranged outside the compressing and liquefying integrated tank, low-temperature environment supply is achieved through the spiral refrigerating pipe, the compressing and liquefying processes are completed in the same tank body, gas does not need to pass through a long-distance conveying pipeline, and heat energy and pressure losses in the conveying process are effectively avoided; and the overall operation efficiency of gas compression and liquefaction is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of gas processing equipment, specifically to an integrated gas compression and liquefaction device. Background Technology

[0002] Gas compression and liquefaction are crucial technologies in modern industry and energy, their core function being to improve the efficiency of gas storage and transportation while meeting the specific gas state requirements of various applications. Gas compression reduces gas volume by increasing pressure, creating conditions for subsequent liquefaction processes; liquefaction, on the other hand, transforms a gas into a liquid state by lowering its temperature or further pressurizing it. Liquid gases are characterized by their small volume and high density, facilitating storage and transportation, and are widely used in natural gas, liquefied petroleum gas (LPG), liquid oxygen, and liquid nitrogen. For example, natural gas liquefaction reduces its volume by approximately 600 times, significantly improving storage and transportation efficiency; liquid oxygen and liquid nitrogen are widely used in medical refrigeration and industrial cooling. Therefore, gas compression and liquefaction technologies occupy an important position in industries such as energy, chemicals, medicine, and aerospace, and their efficiency and economy are crucial for industry development.

[0003] However, traditional gas compression and liquefaction processes typically employ separate equipment, where the compression and liquefaction units operate independently, each performing the functions of compression and liquefaction. This separate design has several drawbacks in practical applications: firstly, it requires a large footprint, and the system installation and commissioning process is complex; secondly, the compressed gas needs to be transported to the liquefaction unit via pipelines, which can easily lead to heat and pressure losses, increasing energy consumption for cooling and liquefaction, and thus reducing overall operating efficiency; thirdly, separate operation requires independent maintenance of multiple modules, increasing maintenance costs and reducing system reliability. Therefore, traditional processes cannot meet the actual needs of today's industrial sectors for efficient and miniaturized gas processing equipment. In light of this, we propose an integrated gas compression and liquefaction device. Utility Model Content

[0004] The purpose of this invention is to provide an integrated gas compression and liquefaction device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An integrated gas compression and liquefaction device includes an integrated compression and liquefaction tank, which serves as the main container for gas compression and liquefaction, providing internal space for completing the gas compression and liquefaction processes. An inlet pipe is located on the outer wall of the integrated compression and liquefaction tank near the top, allowing gas to be introduced into the tank. A U-shaped mounting plate is located on the top of the integrated compression and liquefaction tank, serving to fix a hydraulic cylinder and provide a stable support structure for its installation. A hydraulic cylinder is located in the middle of the top of the U-shaped mounting plate. The hydraulic cylinder's function is to drive the compression plate to move up and down through the extension and retraction of its movable rod, thereby compressing the gas. The movable rod of the hydraulic cylinder passes through the top of the integrated compression and liquefaction tank and is fixedly connected to the compression plate. The compression plate's function is to compress the gas inside the integrated compression and liquefaction tank, creating the necessary high-pressure conditions for gas liquefaction.

[0007] The compressed liquefaction integrated tank is surrounded by a refrigeration outer tank. The refrigeration outer tank serves to enclose the compressed liquefaction integrated tank, providing a low-temperature environment to achieve gas liquefaction. The refrigeration outer tank contains a spiral refrigeration pipe, which is connected to a liquid nitrogen refrigerant circulation system. This system stores liquid nitrogen in the outer tank and pumps it into the spiral refrigeration pipe via a circulation pump. The liquid nitrogen absorbs heat in the pipe and transforms into gaseous nitrogen. The gaseous nitrogen then returns to the storage tank via a loop and is liquefied again by the condenser, forming a cycle of liquid nitrogen refrigerant circulation. The system is existing technology and will not be described in detail here. The function of the spiral refrigeration pipe is to circulate liquid nitrogen through the liquid nitrogen refrigerant circulation system, absorb heat from the integrated compression and liquefaction tank, and thus ensure the low temperature required for gas liquefaction. The bottom of the integrated compression and liquefaction tank is equipped with a liquid outlet pipe, which is used to discharge the liquefied gas from the integrated compression and liquefaction tank and transport it to the storage tank. The output end of the liquid outlet pipe passes through the bottom of the inner wall of the outer refrigeration tank and is connected to the storage tank. The function of the storage tank is to store the liquefied gas for subsequent use.

[0008] Preferably, the intake pipe is equipped with a control valve. The function of the control valve is to close the intake pipe after gas is input. When the movable rod of the hydraulic cylinder is fully retracted, the output end of the intake pipe is located below the compression plate, ensuring that the gas output from the intake pipe is located below the compression plate, thereby ensuring that the compression plate can compress all the input gas.

[0009] Preferably, the spiral refrigeration tube is sleeved on the outer wall of the integrated compression and liquefaction tank, and both the inlet and outlet ends of the spiral refrigeration tube penetrate the inner wall of the outer refrigeration tank to the outside. This design can ensure the smooth operation of the liquid nitrogen refrigerant circulation, so that the low temperature environment can be maintained continuously during the compression and liquefaction process.

[0010] Preferably, the bottom of the inner wall of the refrigeration outer tank is provided with a plurality of arc-shaped support blocks arranged in a circular array. The top of the arc-shaped support blocks abuts against the bottom of the integrated compression and liquefaction tank. The function of the arc-shaped support blocks is to support the bottom of the integrated compression and liquefaction tank and ensure its stability and safety inside the refrigeration outer tank.

[0011] Preferably, the outer wall of the refrigeration tank, near the bottom, is provided with two symmetrically arranged supports. The purpose of the supports is to support the weight of the entire device and ensure the overall stability and robustness of the equipment.

[0012] Preferably, the outlet pipe is equipped with a control valve and a check valve. The control valve regulates the liquid flow rate, and the check valve prevents liquid backflow and ensures the reliability of liquid delivery. During the liquid discharge operation, the movable rod of the hydraulic cylinder extends, causing the compression plate to move downward and forcing all the liquefied gas to be discharged. The bottom of the outer wall of the outlet pipe is equipped with a first flange. The function of the first flange is to connect with the second flange on the guide pipe through bolts and nuts to ensure the sealing and stability between the outlet pipe and the guide pipe.

[0013] Preferably, the top of the liquid storage tank is provided with a liquid guide pipe, which is used to transport liquefied gas from the liquid outlet pipe to the liquid storage tank. The top of the outer wall of the liquid guide pipe is provided with a second flange, which is connected to the first flange by bolts and nuts. The function of the second flange is to connect to the first flange on the liquid outlet pipe by bolts and nuts to achieve a sealed connection between the pipes.

[0014] Preferably, the top of the liquid storage tank is also provided with a suction pipe, which is connected to a suction device. The function of the suction pipe is to remove the gas inside the liquid storage tank to prevent gas accumulation from affecting the liquid storage. The suction pipe is provided with a control valve for opening and closing the suction pipe.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This integrated gas compression and liquefaction device effectively integrates gas compression and liquefaction functions by combining the compression and liquefaction devices into a single compression-liquefaction tank and combining it with a refrigeration outer tank structure design, thus avoiding the problem of traditional separate equipment occupying too much space.

[0017] 2. This integrated gas compression and liquefaction device has a refrigerated outer tank outside the integrated compression and liquefaction tank, and achieves efficient low-temperature environment supply through a spiral refrigeration pipe and liquid nitrogen refrigerant circulation system. Since the compression and liquefaction processes are completed in the same tank, the gas does not need to pass through long-distance transmission pipelines, effectively avoiding the loss of heat and pressure during transmission, thereby significantly improving the overall operating efficiency of gas compression and liquefaction.

[0018] 3. This integrated gas compression and liquefaction device is equipped with a one-way valve on the liquid outlet pipe, which can prevent liquefied gas from flowing back when the storage tank is full or when the pipeline pressure fluctuates, thus ensuring the stability and safety of the liquid transportation process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the overall third-view structure of this utility model;

[0022] Figure 4 This is a cross-sectional structural diagram of the refrigeration outer tank in this utility model;

[0023] Figure 5 This is a cross-sectional structural diagram of the integrated compression liquefaction tank of this utility model;

[0024] Figure 6 This is a schematic diagram of the assembly structure of the liquid storage tank and the liquid outlet pipe in this utility model;

[0025] In the diagram: 1. Compression liquefaction integrated tank; 10. Inlet pipe; 11. Outlet pipe; 110. First flange; 12. Check valve; 2. Refrigeration outer tank; 20. Arc-shaped support block; 3. U-shaped mounting plate; 4. Hydraulic cylinder; 5. Compression plate; 6. Spiral refrigeration pipe; 7. Liquid storage tank; 70. Liquid guide pipe; 700. Second flange; 71. Suction pipe; 8. Bracket. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Please see Figures 1-6 This utility model provides a technical solution:

[0029] An integrated gas compression and liquefaction device includes an integrated compression and liquefaction tank 1, which serves as the main container for gas compression and liquefaction, providing internal space for completing the gas compression and liquefaction processes. An inlet pipe 10 is located on the outer wall of the integrated compression and liquefaction tank 1 near the top, allowing gas to be introduced into the integrated compression and liquefaction tank 1. A U-shaped mounting plate 3 is located at the top of the integrated compression and liquefaction tank 1, serving to fix a hydraulic cylinder 4 and providing a stable support structure for its installation. The hydraulic cylinder 4 is located in the middle of the top of the U-shaped mounting plate 3, connected to an external hydraulic drive system. The hydraulic cylinder 4 drives the compression plate 5 to move up and down through the extension and retraction of its movable rod, thereby compressing the gas. The movable rod of the hydraulic cylinder 4 passes through the top of the integrated compression and liquefaction tank 1 and is fixedly connected to the compression plate 5. The connection between the movable rod of the hydraulic cylinder 4 and the integrated compression and liquefaction tank 1 is sealed. The compression plate 5 compresses the gas inside the integrated compression and liquefaction tank 1, creating the necessary high-pressure conditions for gas liquefaction.

[0030] The compressed liquefaction integrated tank 1 is surrounded by a refrigerated outer tank 2. The function of the refrigerated outer tank 2 is to enclose the compressed liquefaction integrated tank 1, providing it with a low-temperature environment to achieve gas liquefaction. The refrigerated outer tank 2 contains a spiral refrigeration pipe 6, which is connected to a liquid nitrogen refrigerant circulation system. The liquid nitrogen refrigerant circulation system stores liquid nitrogen in the outer tank and pumps it into the spiral refrigeration pipe 6 via a circulation pump. The liquid nitrogen absorbs heat in the pipe and turns into gaseous nitrogen. The gaseous nitrogen returns to the storage tank through a loop and is liquefied again by the condenser, forming a cycle. The liquid nitrogen refrigerant circulation system is... The existing technology will not be elaborated on here. The function of the spiral refrigeration pipe 6 is to circulate liquid nitrogen through the liquid nitrogen refrigerant circulation system, absorb heat from the integrated compression and liquefaction tank 1, and thus ensure the low temperature requirement for gas liquefaction. The bottom of the integrated compression and liquefaction tank 1 is provided with a liquid outlet pipe 11. The function of the liquid outlet pipe 11 is to discharge the liquefied gas from the integrated compression and liquefaction tank 1 and transport it to the liquid storage tank 7. The output end of the liquid outlet pipe 11 passes through the bottom of the inner wall of the outer refrigeration tank 2 and is connected to the liquid storage tank 7. The function of the liquid storage tank 7 is to store the liquefied gas for subsequent use.

[0031] In this embodiment, a control valve is provided on the air intake pipe 10. The function of the control valve is to close the air intake pipe 10 after the gas is input. When the movable rod of the hydraulic cylinder 4 is fully retracted, the output end of the air intake pipe 10 is located below the compression plate 5, ensuring that the gas output from the air intake pipe 10 is located below the compression plate 5, thereby ensuring that the compression plate 5 can compress all the input gas.

[0032] Specifically, the spiral refrigeration pipe 6 is fitted onto the outer wall of the integrated compression and liquefaction tank 1. Both the inlet and outlet ends of the spiral refrigeration pipe 6 penetrate the inner wall of the outer refrigeration tank 2 to the outside. This design ensures the smooth operation of the liquid nitrogen refrigerant circulation, allowing the low-temperature environment to be maintained continuously during the compression and liquefaction process.

[0033] Furthermore, the bottom of the inner wall of the refrigeration outer tank 2 is provided with multiple arc-shaped support blocks 20 arranged in a ring array. The top of the arc-shaped support blocks 20 abuts against the bottom of the integrated compression liquefaction tank 1. The function of the arc-shaped support blocks 20 is to support the bottom of the integrated compression liquefaction tank 1 and ensure its stability and safety inside the refrigeration outer tank 2.

[0034] Furthermore, two symmetrically arranged supports 8 are provided on the outer wall of the refrigeration tank 2 near the bottom. The function of the supports 8 is to support the weight of the entire device and ensure the overall stability and robustness of the equipment.

[0035] Furthermore, the outlet pipe 11 is equipped with a control valve and a check valve 12. The control valve is used to regulate the liquid flow rate, and the check valve 12 is used to prevent liquid backflow and ensure the reliability of liquid delivery. During the liquid discharge operation, the movable rod of the hydraulic cylinder 4 extends, causing the compression plate 5 to move downward, forcing all the liquefied gas to be discharged. The bottom of the outer wall of the outlet pipe 11 is equipped with a first flange 110. The function of the first flange 110 is to connect with the second flange 700 on the liquid guide pipe 70 through bolts and nuts, ensuring the sealing and stability between the outlet pipe 11 and the liquid guide pipe 70.

[0036] Furthermore, the top of the storage tank 7 is provided with a liquid guide pipe 70. The function of the liquid guide pipe 70 is to transport liquefied gas from the liquid outlet pipe 11 to the storage tank 7. The top of the outer wall of the liquid guide pipe 70 is provided with a second flange 700. The second flange 700 is connected to the first flange 110 by bolts and nuts. The function of the second flange 700 is to connect to the first flange 110 on the liquid outlet pipe 11 by bolts and nuts to achieve a sealed connection between the pipes.

[0037] Furthermore, the top of the liquid storage tank 7 is also equipped with a vacuum pipe 71, which is connected to a vacuum device. The function of the vacuum pipe 71 is to remove the gas inside the liquid storage tank 7 to prevent the gas from accumulating and affecting the liquid storage. The vacuuming operation is carried out before the liquid storage operation. A control valve is installed on the vacuum pipe 71 to open and close the vacuum pipe 71.

[0038] In this embodiment, the integrated gas compression and liquefaction device inputs the gas to be processed into the integrated compression and liquefaction tank 1 through the inlet pipe 10. After the gas input is complete, the control valve on the inlet pipe 10 is closed, and the hydraulic cylinder 4 is activated. This causes the moving rod of the hydraulic cylinder 4 to move the compression plate 5 downward, compressing the gas inside the integrated compression and liquefaction tank 1. The compressed gas is liquefied in the low-temperature environment provided by the spiral refrigeration pipe 6. The spiral refrigeration pipe 6 is cooled by a liquid nitrogen refrigerant circulation system. After liquefaction is complete, the liquefied gas exits from the compression tank 1 through the outlet pipe 11. The liquid is discharged from the bottom of the liquefied gas tank 1 and transported to the storage tank 7. The one-way valve 12 on the outlet pipe 11 prevents liquid backflow and ensures the stability and safety of the liquid transportation process. The liquid guide pipe 70 and the outlet pipe 11 are sealed to the first flange 110 through the second flange 700 to ensure the sealing and reliability of the transportation system. After the liquefied gas enters the storage tank 7, it can be transported through the liquid guide pipe 70. Before storage, the gas can be evacuated through the evacuation pipe 71 to remove excess gas inside the storage tank 7 and prevent the gas from affecting the liquid storage.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An integrated gas compression and liquefaction device comprising an integrated compression-liquefaction vessel (1), characterized in that: An air inlet pipe (10) is provided on the outer wall of the integrated compression liquefaction tank (1) near the top. A U-shaped mounting plate (3) is provided on the top of the integrated compression liquefaction tank (1). A hydraulic cylinder (4) is provided in the middle of the top of the U-shaped mounting plate (3). The movable rod of the hydraulic cylinder (4) passes through the top of the integrated compression liquefaction tank (1) and is fixedly connected to a compression plate (5). A refrigeration outer tank (2) is provided on the outside of the integrated compression liquefaction tank (1). A spiral refrigeration pipe (6) is provided inside the refrigeration outer tank (2). A liquid outlet pipe (11) is provided at the bottom of the integrated compression liquefaction tank (1). The output end of the liquid outlet pipe (11) passes through the bottom of the inner wall of the refrigeration outer tank (2) and is connected to a liquid storage tank (7).

2. The integrated gas compression and liquefaction device of claim 1, wherein: The intake pipe (10) is equipped with a control valve. When the movable rod of the hydraulic cylinder (4) is fully retracted, the output end of the intake pipe (10) is located below the compression plate (5).

3. The integrated gas compression and liquefaction apparatus of claim 1, wherein: The spiral refrigeration pipe (6) is sleeved on the outer wall of the compression liquefaction integrated tank (1), and the input end and output end of the spiral refrigeration pipe (6) both penetrate the inner wall of the refrigeration outer tank (2) to the outside.

4. The integrated gas compression and liquefaction apparatus of claim 1, wherein: The bottom of the inner wall of the refrigeration outer tank (2) is provided with a plurality of arc-shaped support blocks (20) arranged in a ring array, and the top of the arc-shaped support blocks (20) abuts against the bottom of the compression liquefaction integrated tank (1).

5. The integrated gas compression and liquefaction apparatus of claim 1, wherein: The outer wall of the refrigeration tank (2) and near the bottom are provided with two supports (8) arranged symmetrically on the left and right.

6. The integrated gas compression and liquefaction apparatus of claim 1, wherein: The outlet pipe (11) is equipped with a control valve and a check valve (12), and the bottom of the outer wall of the outlet pipe (11) is equipped with a first flange (110).

7. The integrated gas compression and liquefaction device according to claim 6, characterized in that: The top of the liquid storage tank (7) is provided with a liquid guide pipe (70), and the top of the outer wall of the liquid guide pipe (70) is provided with a second flange (700). The second flange (700) is connected to the first flange (110) by bolts and nuts.

8. The integrated gas compression and liquefaction apparatus of claim 1, wherein: The top of the storage tank (7) is also provided with an air extraction pipe (71), and a control valve is provided on the air extraction pipe (71).

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