Natural gas compression device and system

Abstract

The utility model relates to the technical field of natural gas storage and transportation equipment, in particular to a natural gas compression device and system, the device comprises pressurization equipment and cooling equipment, the cooling equipment is connected to the pressurization equipment, the pressurization equipment comprises a compressor and an output pipe, and the cooling equipment is used for exchanging heat with the output pipe; the system comprises a natural gas storage tank and the natural gas compression device, the pressurizing device is communicated with the natural gas storage tank, and through the arrangement, heat of the output pipe can be conducted to the cooling device, so that the temperature of the output pipe is reduced, the probability that the output pipe is damaged due to too high temperature is reduced, and the service life of the output pipe is prolonged. And therefore, the probability of fire and even explosion is reduced, and the use safety of the natural gas compression device is improved.

Description

Technical Field

[0001] This utility model relates to the field of natural gas storage and transportation equipment technology, and in particular to a natural gas compression device and system. Background Technology

[0002] Natural gas is one of the main energy sources in cities. As cities continue to expand and develop, the demand for natural gas is also gradually increasing. During peak gas consumption periods, there may be a shortage of natural gas supply. Therefore, most cities have natural gas storage facilities. Existing natural gas storage facilities compress gaseous natural gas into liquefied natural gas for storage, and then load it onto trucks and deliver it to various gas supply networks during peak gas supply periods.

[0003] During the process of natural gas changing from a gaseous state to a liquid state, a large amount of heat is released. When existing natural gas compression equipment compresses natural gas, the heat released by the natural gas can damage the outlet pipeline of the natural gas compression equipment. In severe cases, it can cause major accidents such as fires or even explosions, which poses a certain degree of danger. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing natural gas compression equipment, which, when compressing natural gas, can cause damage to the outlet pipeline of the natural gas compression equipment due to the heat released by the natural gas, which may lead to serious accidents such as fire or even explosion, and thus poses certain dangers. This invention provides a natural gas compression device and system.

[0005] In a first aspect, the present invention provides a natural gas compression device, including a pressurizing device and a cooling device, wherein the cooling device is connected to the pressurizing device, the pressurizing device includes a compressor and an output pipe, and the cooling device is used for heat exchange with the output pipe.

[0006] When natural gas is compressed by a compressor and releases heat, the heat is absorbed by the output pipe as the natural gas moves toward the output pipe, causing the output pipe temperature to rise. By setting up a cooling device and using the cooling device to exchange heat with the output pipe, the heat from the output pipe can be conducted to the cooling device, thereby reducing the temperature of the output pipe. This reduces the probability of damage to the output pipe due to excessive temperature, thereby reducing the probability of fire or even explosion and improving the safety of using natural gas compression devices.

[0007] The compressor can be a centrifugal compressor or a reciprocating compressor, etc., and the cooling device can be a condenser or a heat exchanger, etc.

[0008] The cooling device includes a heat exchange section and a refrigeration section, the heat exchange section is connected to the refrigeration section, the refrigeration section is connected to the compressor, and the heat exchange section is connected to the output pipe.

[0009] By setting up a heat exchange section, the efficiency of heat transfer can be improved. By setting up a refrigeration section, the heat exchange efficiency of the heat exchange section can be improved. The heat exchange section can be set as a heat exchange sleeve or a heat exchange plate, and the refrigeration section can be set as a cooling water tank or an air-cooled unit, etc.

[0010] Preferably, the heat exchange section is a heat exchange sleeve, which is sleeved on the output pipe, and the cooling section is a cooling water tank.

[0011] The heat exchange sleeve is equipped with a cooling pipe, which is arranged axially around the heat exchange sleeve and is spiral in shape. The heat exchange sleeve is connected to the cooling water tank through the cooling pipe.

[0012] By providing cooling pipes inside the heat exchanger tube, and the cooling pipes being arranged axially around the heat exchanger tube, the heat exchange efficiency of the heat exchanger tube can be improved. By setting the cooling pipes in a spiral shape, the heat exchange efficiency of the heat exchanger tube is further improved.

[0013] The cooling water tank is equipped with a cooling chip, a power supply and a water pump. The cooling chip is disposed on the surface of the cooling water tank, and the power supply and water pump are disposed inside the cooling water tank. The cooling chip is electrically connected to the power supply.

[0014] By installing cooling fins, the cooling efficiency of the cooling equipment is improved. By installing a water pump, the circulation speed of water in the heat exchange jacket and cooling water tank is increased, further improving the heat exchange efficiency.

[0015] In a second aspect, this utility model provides a natural gas compression system, including a natural gas storage tank and a natural gas compression device, wherein the pressurization device is connected to the natural gas storage tank.

[0016] By installing a natural gas storage tank, the natural gas compression system can compress the gas inside the tank, reducing the likelihood that the system will fail to compress the incoming gas in time if the gas flow is directly introduced into the compression system from the pipeline. The storage tank acts as a buffer, thus improving the system's reliability.

[0017] The natural gas storage tank is also equipped with a pressure relief device.

[0018] By installing a pressure relief device, when there is too much gas in the natural gas storage tank, the gas can be discharged from the natural gas storage tank through the pressure relief device, which improves the safety of the natural gas storage tank. The pressure relief device can be set as a pressure relief valve or a pressure relief cylinder, etc.

[0019] The pressure relief device is a pressure relief cylinder, which is connected to the natural gas storage tank. The pressure relief cylinder is equipped with a spring and a slider. One end of the spring is connected to the inner wall of the pressure relief cylinder, and the other end is connected to the slider. The spring can extend and retract along the axial direction of the pressure relief cylinder. The size of the slider is adapted to the size of the interface between the pressure relief cylinder and the natural gas storage tank. The pressure relief cylinder wall has a pressure relief port. When the spring is in its natural state, the slider is located on the side of the pressure relief port closer to the natural gas storage tank, and the slider can move along the axial direction of the pressure relief cylinder.

[0020] The spring in its natural state refers to the state in which the gas inside and outside the natural gas storage tank exerts no force on the spring when the gas pressure inside or outside the natural gas storage tank is equal.

[0021] The slider's size is adapted to the size of the interface between the pressure relief cylinder and the natural gas storage tank. That is, when the slider is located at the interface between the pressure relief cylinder and the natural gas storage tank, the slider can isolate the gas inside and outside the natural gas storage tank.

[0022] When the spring is in its natural state, the slider is located on the side of the pressure relief port closer to the natural gas storage tank, meaning that the gas inside and outside the natural gas storage tank are isolated. When the gas pressure in the natural gas storage tank rises and exceeds the gas pressure outside the natural gas storage tank, the gas inside the natural gas storage tank exerts a force on the slider, causing the slider to shift. This causes the slider to move along the axial direction of the pressure relief cylinder until the slider moves to the side of the pressure relief port away from the natural gas storage tank. At this point, the inside and outside of the natural gas storage tank are connected, allowing the gas inside the natural gas storage tank to escape, thereby reducing the gas pressure inside the natural gas storage tank.

[0023] This feature improves the ease of depressurizing natural gas storage tanks.

[0024] The natural gas storage tank is equipped with an inlet pipe and a support plate.

[0025] By installing an inlet pipe, the convenience of inputting gas into the natural gas storage tank is improved; by installing support plates, the stability of the natural gas storage tank when placed is improved.

[0026] The support plate has screw holes and limiting holes. The screw holes are used to fix the natural gas storage tank to the mounting surface, and the limiting holes are used to restrict the movement of the natural gas storage tank along the mounting surface.

[0027] When a natural gas storage tank needs to be fixed in a specific location for a long time, it can be secured with bolts through the screw holes. When the natural gas storage tank needs to be temporarily placed, it can be temporarily fixed by inserting pins or other parts into the limiting holes. The limiting holes can restrict the movement of the natural gas storage tank along the fixed surface, thereby improving the flexibility of the use of the natural gas storage tank.

[0028] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0029] 1. This utility model provides a natural gas compression device, including a pressurizing device and a cooling device. The cooling device is connected to the pressurizing device. The pressurizing device includes a compressor and an output pipe. The cooling device is used to exchange heat with the output pipe. When natural gas is compressed by the compressor and releases heat, as the natural gas moves toward the output pipe, the heat is absorbed by the output pipe, causing the temperature of the output pipe to rise. By setting up a cooling device and using it to exchange heat with the output pipe, the heat of the output pipe can be conducted to the cooling device, thereby reducing the temperature of the output pipe and reducing the probability of damage to the output pipe due to excessive temperature. This reduces the probability of fire or even explosion and improves the safety of using the natural gas compression device.

[0030] 2. This utility model provides a natural gas compression system, including a natural gas storage tank and a natural gas compression device. The pressurizing device is connected to the natural gas storage tank. By setting up the natural gas storage tank, the natural gas compression system can compress the gas in the natural gas storage tank, reducing the probability that the natural gas compression system cannot compress the input gas in time when the gas flow is directly introduced into the natural gas compression system from the delivery pipeline. The natural gas storage tank plays a buffering role. Through this setting, the reliability of the system is improved. Attached Figure Description

[0031] Figure 1 This is a perspective view of the natural gas compression device of Embodiment 1 provided by this utility model.

[0032] Figure 2 This is a cross-sectional schematic diagram of the heat exchange sleeve in the natural gas compression device of Embodiment 1 provided by this utility model.

[0033] Figure 3 This is a cross-sectional schematic diagram of the cooling water tank in the natural gas compression device of Embodiment 1 provided by this utility model.

[0034] Figure 4 This is a three-dimensional schematic diagram of the natural gas compression system provided in Embodiment 2 of this utility model.

[0035] Figure 5 This is a cross-sectional schematic diagram of the natural gas storage tank in the natural gas compression system of Embodiment 2 provided by this utility model.

[0036] Marked in the image:

[0037] 1-Pressure pressurization equipment, 11-Compressor, 12-Output pipe, 2-Cooling equipment, 21-Heat exchange jacket, 211-Cooling pipe, 22-Cooling water tank, 221-Refrigeration element, 222-Power supply, 223-Water pump, 3-Natural gas storage tank, 31-Pressure relief cylinder, 311-Spring, 312-Slider, 32-Inlet pipe, 33-Support plate. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments. All technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0039] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0040] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0041] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0042] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0043] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0044] Example 1

[0045] like Figures 1-3 As shown, this embodiment provides a natural gas compression device, including a pressurizing device 1 and a cooling device 2. The cooling device 2 is connected to the pressurizing device 1. The pressurizing device 1 includes a compressor 11 and an output pipe 12. The cooling device 2 is used to exchange heat with the output pipe 12.

[0046] When natural gas is compressed by compressor 11 and releases heat, as the natural gas moves toward output pipe 12, the heat is absorbed by output pipe 12, causing the temperature of output pipe 12 to rise. By setting up cooling device 2 and using cooling device 2 to exchange heat with output pipe 12, the heat of output pipe 12 can be conducted to cooling device 2, thereby reducing the temperature of output pipe 12, reducing the probability of output pipe 12 being damaged due to excessive temperature, thereby reducing the probability of fire or even explosion, and improving the safety of natural gas compression device use.

[0047] The compressor 11 is a centrifugal compressor.

[0048] The cooling device 2 includes a heat exchange section and a refrigeration section. The heat exchange section is connected to the refrigeration section. The refrigeration section is connected to the compressor 11. The heat exchange section is connected to the output pipe 12.

[0049] By setting up a heat exchange section, the efficiency of heat transfer can be improved; by setting up a refrigeration section, the heat exchange efficiency of the heat exchange section can be improved.

[0050] The heat exchange section is a heat exchange sleeve 21, which is sleeved on the output pipe 12, and the refrigeration section is a cooling water tank 22.

[0051] The heat exchange sleeve 21 is provided with a cooling pipe 211, which is arranged axially around the heat exchange sleeve 21. The cooling pipe 211 is spiral in shape, and the heat exchange sleeve 21 is connected to the cooling water tank 22 through the cooling pipe 211.

[0052] By providing a cooling pipe 211 inside the heat exchange sleeve 21, and the cooling pipe 211 being arranged axially around the heat exchange sleeve 21, the heat exchange efficiency of the heat exchange sleeve 21 can be improved. By setting the cooling pipe 211 to be spiral, the heat exchange efficiency of the heat exchange sleeve 21 is further improved.

[0053] The cooling water tank 22 is equipped with a cooling chip 221, a power supply 222 and a water pump 223. The cooling chip 221 is disposed on the surface of the cooling water tank 22, and the power supply 222 and the water pump 223 are both disposed inside the cooling water tank 22. The cooling chip 221 is electrically connected to the power supply 222.

[0054] By setting up the cooling element 221, the cooling efficiency of the cooling device 2 is improved. By setting up the water pump 223, the circulation speed of water in the heat exchange tube 21 and the cooling water tank 22 is increased, further improving the heat exchange efficiency.

[0055] Example 2

[0056] like Figure 4 and Figure 5 As shown, this embodiment provides a natural gas compression system, including a natural gas storage tank 3 and a natural gas compression device, wherein the pressurizing device 1 is connected to the natural gas storage tank 3.

[0057] By setting up a natural gas storage tank 3, the natural gas compression system can compress the gas inside the natural gas storage tank 3, reducing the probability that the natural gas compression system cannot compress the input gas in time when the gas flow is directly introduced into the natural gas compression system from the delivery pipeline. The natural gas storage tank 3 plays a buffering role, and the reliability of the system is improved through this setting.

[0058] The natural gas storage tank 3 is also equipped with a pressure relief device.

[0059] By installing a pressure relief device, when there is too much gas in the natural gas storage tank 3, the gas can be discharged from the natural gas storage tank 3 through the pressure relief device, thereby improving the safety of the use of the natural gas storage tank 3.

[0060] The pressure relief device is a pressure relief cylinder 31, which is connected to the natural gas storage tank 3. The pressure relief cylinder 31 is equipped with a spring 311 and a slider 312. One end of the spring 311 is connected to the inner wall of the pressure relief cylinder 31, and the other end is connected to the slider 312. The spring 311 can extend and retract along the axial direction of the pressure relief cylinder 31. The size of the slider 312 is adapted to the size of the interface between the pressure relief cylinder 31 and the natural gas storage tank 3. The pressure relief cylinder 31 has a pressure relief port on its wall. When the spring 311 is in its natural state, the slider 312 is located on the side of the pressure relief port closer to the natural gas storage tank 3.

[0061] The spring 311 being in its natural state means that when the internal and external gas pressures of the natural gas storage tank 3 are equal, the gas inside or outside the natural gas storage tank 3 does not exert any force on the spring 311.

[0062] The size of the slider 312 is adapted to the size of the interface between the pressure relief cylinder 31 and the natural gas storage tank 3. That is, when the slider 312 is located at the interface between the pressure relief cylinder 31 and the natural gas storage tank 3, the slider 312 can isolate the gas inside the natural gas storage tank 3 from the gas outside the natural gas storage tank 3.

[0063] When the spring 311 is in its natural state, the slider 312 is located on the side of the pressure relief port closer to the natural gas storage tank 3, that is, the gas inside and outside the natural gas storage tank 3 is isolated. When the gas pressure in the natural gas storage tank 3 increases and exceeds the gas pressure outside the natural gas storage tank 3, the gas inside the natural gas storage tank 3 exerts a force on the slider 312, causing the slider 312 to move. This causes the slider 312 to drive the spring 311 to move axially along the pressure relief cylinder 31 until the slider 312 moves to the side of the pressure relief port away from the natural gas storage tank 3. At this time, the inside and outside of the natural gas storage tank 3 are connected, allowing the gas inside the natural gas storage tank 3 to escape, thereby reducing the gas pressure inside the natural gas storage tank 3.

[0064] This setup improves the ease of depressurizing the natural gas storage tank 3.

[0065] The natural gas storage tank 3 is equipped with an inlet pipe 32 and a support plate 33.

[0066] By setting up the air inlet pipe 32, the convenience of inputting gas into the natural gas storage tank 3 is improved, and by setting up the support plate 33, the stability of the natural gas storage tank 3 when placed is improved.

[0067] The support plate 33 has screw holes and limiting holes.

[0068] When the natural gas storage tank 3 needs to be fixed in a specific location for a long time, it can be fixed by bolt holes. When the natural gas storage tank 3 needs to be temporarily placed, it can be fixed by inserting pins or other parts into the limiting holes. The limiting holes can restrict the movement of the natural gas storage tank 3 along the fixed surface, thereby achieving temporary fixation of the natural gas storage tank 3. This setting improves the flexibility of the use of the natural gas storage tank 3.

[0069] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A natural gas compression device, characterized in that, It includes a pressurizing device (1) and a cooling device (2), wherein the cooling device (2) is connected to the pressurizing device (1), the pressurizing device (1) includes a compressor (11) and an output pipe (12), the output pipe (12) is the outlet pipe of the compressor (11), and the cooling device (2) is used to exchange heat with the output pipe (12); The cooling device (2) includes a heat exchange sleeve (21) and a cooling water tank (22). The heat exchange sleeve (21) is sleeved on the output pipe (12). A cooling pipe (211) is provided inside the heat exchange sleeve (21). The cooling pipe (211) is spirally arranged along the axial direction of the heat exchange sleeve (21). The heat exchange sleeve (21) is connected to the cooling water tank (22) through the cooling pipe (211).

2. A natural gas compression device according to claim 1, characterized in that, The cooling water tank (22) is connected to the compressor (11).

3. A natural gas compression device according to claim 2, characterized in that, The cooling water tank (22) is equipped with a cooling chip (221), a power supply (222) and a water pump (223). The cooling chip (221) is disposed on the surface of the cooling water tank (22), and the power supply (222) and the water pump (223) are both disposed inside the cooling water tank (22). The cooling chip (221) is electrically connected to the power supply (222).

4. A natural gas compression system, characterized in that, It includes a natural gas storage tank (3) and a natural gas compression device as described in any one of claims 1-3, wherein the pressurizing device (1) is connected to the natural gas storage tank (3).

5. A natural gas compression system according to claim 4, characterized in that, The natural gas storage tank (3) is also equipped with a pressure relief device.

6. A natural gas compression system according to claim 5, characterized in that, The pressure relief device is a pressure relief cylinder (31), which is connected to the natural gas storage tank (3). The pressure relief cylinder (31) is equipped with a spring (311) and a slider (312). One end of the spring (311) is connected to the inner wall of the pressure relief cylinder (31), and the other end is connected to the slider (312). The spring (311) can extend and retract along the axial direction of the pressure relief cylinder (31). The size of the slider (312) is adapted to the size of the interface between the pressure relief cylinder (31) and the natural gas storage tank (3). The pressure relief cylinder (31) has a pressure relief port on its wall. When the spring (311) is in its natural state, the slider (312) is located on the side of the pressure relief port closer to the natural gas storage tank (3). The slider (312) can move along the axial direction of the pressure relief cylinder (31).

7. A natural gas compression system according to any one of claims 4-6, characterized in that, The natural gas storage tank (3) is equipped with an inlet pipe (32) and a support plate (33).

8. A natural gas compression system according to claim 7, characterized in that, The support plate (33) has screw holes and limiting holes. The screw holes are used to fix the natural gas storage tank (3) to the mounting surface, and the limiting holes are used to restrict the movement of the natural gas storage tank (3) along the mounting surface.

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