Safety pressure reducing pry for gas power generation

Abstract

The utility model relates to the technical field of gas pipelines, in particular to a safety pressure reduction pry for gas power generation. The safety type pressure reduction pry for gas power generation comprises a prying base and a gas outlet pipe fixedly installed on one side of the prying base, and a control box is installed at one corner of the prying base. The gas collecting pipe is fixedly installed in the middle of the skid-mounted base, the middle of the gas collecting pipe communicates with the gas outlet pipe, the two ends of the gas collecting pipe communicate with gas inlet branch pipes, pressure reducing valves are installed at the ends, away from the gas collecting pipe, of the two gas inlet branch pipes, and the ends, away from the gas inlet branch pipes, of the pressure reducing valves are jointly connected with a gas inlet header pipe. The air outlet end of the dispersing valve communicates with an air return guide pipe, an air return assembly is installed between the air return guide pipe and the air inlet header pipe and comprises an air storage cylinder, and an integrally-formed air return pipe head is arranged at the top end of the air storage cylinder. The safety type pressure reduction pry for gas power generation has the advantages that pressure relief and recovery of gas are facilitated, and gas loss is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas pipelines, in particular to a safe pressure reducing skid for gas power generation. Background Art

[0002] Gas-fired power generation uses natural gas as an energy source to power generators. Due to the characteristics of natural gas, it is stored as a liquefied liquid in tanks. When used, it is transported through pipelines and converted to a gaseous state. Currently, in the process of field oil exploration, with technological innovation and environmental protection requirements, energy substitution is a major trend in the oil drilling industry. Distributed energy "gas-to-oil" projects in oil drilling exploration and development are one such initiative. Faced with today's high oil prices, high costs, high-power equipment, and the trend of rapid drilling with three pumps running simultaneously at maximum flow rates, it is imperative to improve these conditions while continuing to reduce total costs, improve efficiency, and ensure downhole safety.

[0003] When natural gas is supplied in the wild, it is transported through mobile gas storage tanks and skid-mounted transmission pipelines. The pressure directly delivered from the tank is too high. If it is directly delivered to the generator through the pipeline, the impact on the generator is too great, affecting the operation of the generator. It is necessary to use pressure reducing equipment to reduce the pressure. A dispersion valve is also required in the pressure reducing transmission pipeline to relieve the pressure at high pressure. The existing pressure reducing transmission device directly transmits the gas relieved by the dispersion valve to the outside world, which causes waste of gas raw materials.

[0004] Therefore, it is necessary to provide a new safe pressure reducing skid for gas power generation to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a safe pressure reducing skid for gas power generation.

[0006] The utility model provides a safety pressure reducing skid for gas power generation, comprising: a skid mount, and an air outlet pipe fixedly mounted on one side of the skid mount, wherein a control box is mounted on one corner of the skid mount;

[0007] The air collecting pipe is fixedly installed in the middle part of the skid-mounted seat, and the middle part of the air collecting pipe is connected with the air outlet pipe, and both ends of the air collecting pipe are connected with air intake branch pipes, and a pressure reducing valve is installed at the end of the two groups of air intake branch pipes facing away from the collecting pipe, and the end of the pressure reducing valve facing away from the air intake branch pipe is commonly connected with the air intake main pipe, the middle part of the air collecting pipe is connected with a dispersion valve, and the air outlet end of the dispersion valve is connected with a return air duct, and an air return assembly is installed between the return air duct and the air intake main pipe, and the air return assembly includes an air storage cylinder, and the top of the air storage cylinder is provided with an integrally formed return air pipe head, and the front end of the return air pipe head is connected to the air intake main pipe, and a piston rod is movably installed in the air storage cylinder, and a driving part that drives the piston rod to move is installed on the skid-mounted seat.

[0008] Preferably, a plurality of air guide holes are opened at one end of the return air pipe head inserted into the intake manifold, and a valve core part for sealing the air guide holes is installed on the return air pipe head, and a top rod cooperating with the valve core part is provided at the front end of the piston of the piston rod, and the valve core part includes a sealing cover, and the sealing cover is fixedly installed on one end of the return air pipe head, and a valve stem is inserted on the sealing cover, and a sealing valve head is fixedly installed on the end of the valve stem extending into the return air pipe head, and a return spring is sleeved on the valve stem.

[0009] Preferably, a guide plate is fixedly mounted on the end of the air cylinder, the guide plate is provided with a through hole for the piston rod to pass through, and a limit spring is symmetrically mounted on one side of the guide plate facing the air cylinder.

[0010] Preferably, the driving member includes a screw, which is rotatably mounted on the skid-mounted seat and is located directly below the air cylinder, and a push plate is threadedly mounted on the screw, a contact switch is embedded on the push plate, the contact switch is electrically connected to the control box, and the contact switch is located directly behind the piston rod, guide rods are fixedly mounted on both sides of the push plate, a limit block is installed on the skid-mounted seat, the limit block is provided with a through hole that slides with the guide rod, a motor for driving the screw to rotate is installed on the skid-mounted seat, and the motor is electrically connected to the control box.

[0011] Preferably, the skid-mounted seat is also equipped with a temperature control component for heating the air intake branch pipe, and the temperature control component includes heating pipes sleeved on two groups of the air intake branch pipes, and the two heating pipes are connected by two conduits, one of which is provided with a circulation pump, and the other is provided with a temperature control oil tank, the temperature control oil tank is filled with heat transfer oil, and a constant temperature electric heating plate and a temperature sensor are embedded in the temperature control oil tank, and the circulation pump, constant temperature electric heating plate and temperature sensor are all electrically connected to the control box.

[0012] Preferably, a shut-off valve and a filter are further provided on the intake branch pipe on one side of the pressure reducing valve, and both the pressure reducing valve and the shut-off valve are electrically connected to the control box.

[0013] Preferably, a gas flow meter and a pressure gauge are installed on the gas outlet pipe, and the gas flow meter is electrically connected to the control box.

[0014] Compared with related technologies, the safety pressure reducing skid for gas power generation provided by the present invention has the following beneficial effects:

[0015] 1. This utility model provides a safe pressure reducing skid for gas-fired power generation. By arranging a dispersion valve, a return air duct and a return air assembly between the gas manifold and the gas inlet manifold, it is convenient to recycle the dispersed pressure-relieved gas when the gas pressure in the pipeline is too high, thereby reducing fuel waste.

[0016] 2. By setting a temperature control component on the air inlet branch pipe, it is convenient to heat the transported gas in the field to avoid the gas liquefaction caused by too low temperature and affect the transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a preferred embodiment of a safety pressure reducing skid for gas power generation provided by the utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the safety pressure reducing skid for gas power generation provided by the utility model;

[0019] Figure 3 This is a structural schematic diagram of the pressure reducing skid pipeline section provided by the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the temperature control component provided by the utility model;

[0021] Figure 5 This is a structural schematic diagram of the air return assembly provided by the utility model.

[0022] Reference numerals in the figure: 1. Skid mount; 11. Outlet pipe; 12. Gas flow meter; 13. Pressure gauge; 14. Control box; 2. Gas manifold; 3. Inlet branch pipe; 4. Pressure reducing valve; 41. Shut-off valve; 42. Filter; 5. Inlet manifold; 6. Dispersion valve; 61. Return air duct; 7. Return air assembly; 71. Air reservoir; 72. Return air pipe head; 701. Air guide hole; 73. Valve core; 731. Blocking cap; 732 , valve stem; 733, sealing valve head; 734, return spring; 74, piston rod; 75, push rod; 76, guide plate; 77, limit spring; 8, driving part; 81, screw; 82, push plate; 83, contact switch; 84, guide rod; 85, limit block; 86, motor; 9, temperature control component; 91, heating pipe; 92, circulation pump; 93, temperature control oil tank; 931, constant temperature electric heating plate; 932, temperature sensor. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0025] See also Figures 1 to 5 The embodiment of the present invention provides a safety pressure reducing skid for gas-fired power generation, the safety pressure reducing skid for gas-fired power generation comprising:

[0026] A skid-mounted base 1, and an air outlet pipe 11 fixedly mounted on one side of the skid-mounted base 1. A control box 14 is mounted on one corner of the skid-mounted base 1;

[0027] The air collecting pipe 2 is fixedly installed in the middle of the skid-mounted seat 1, and the middle of the air collecting pipe 2 is connected to the air outlet pipe 11. Both ends of the air collecting pipe 2 are connected to the air intake branch pipe 3. The two groups of air intake branch pipes 3 are installed with a pressure reducing valve 4 at one end away from the air collecting pipe 2. The pressure reducing valve 4 is connected to the air intake main pipe 5 at one end away from the air intake branch pipe 3. The middle part of the air collecting pipe 2 is connected to a dispersion valve 6. The outlet end of the dispersion valve 6 is connected to a return air duct 61. A return air component 7 is installed between the return air duct 61 and the air intake main pipe 5. The return air component 7 includes an air storage Cylinder 71, the top of the air storage cylinder 71 is provided with an integrally formed return air pipe head 72, the front end of the return air pipe head 72 is connected to the intake manifold 5, and the end of the return air pipe head 72 inserted into the intake manifold 5 is provided with a plurality of air guide holes 701, and a valve core part 73 for sealing the air guide holes 701 is installed on the return air pipe head 72, and a piston rod 74 is movably installed in the air storage cylinder 71, and the front end of the piston of the piston rod 74 is provided with a push rod 75 that cooperates with the valve core part 73, and the skid-mounted seat 1 is provided with a driving part 8 for driving the piston rod 74 to move.

[0028] The valve core member 73 includes a blocking cover 731, which is fixedly mounted on one end of the return air pipe head 72. A valve stem 732 is inserted into the blocking cover 731. A sealing valve head 733 is fixedly mounted on the end of the valve stem 732 that extends into the return air pipe head 72. A return spring 734 is sleeved on the valve stem 732.

[0029] The driving member 8 includes a screw 81, which is rotatably mounted on the skid mount 1 and is located directly below the air cylinder 71. A push plate 82 is threadedly mounted on the screw 81, and a contact switch 83 is embedded on the push plate 82. The contact switch 83 is electrically connected to the control box 14 and is located directly behind the piston rod 74. Guide rods 84 are fixedly mounted on both sides of the push plate 82. A limit block 85 is installed on the skid mount 1. The limit block 85 is provided with a through hole that slides with the guide rod 84. A motor 86 for driving the screw 81 to rotate is installed on the skid mount 1, and the motor 86 is electrically connected to the control box 14.

[0030] It should be noted that: when in use, the air intake main pipe 5 is connected to the natural gas storage tank, the air outlet pipe 11 is connected to the air intake pipe of the generator, and then the pressure reducing valve 4 is opened to pass through the air intake branch pipe 3 and the air collecting pipe 2 to transport the natural gas in the storage tank to the generator after decompression. Two sets of air intake branch pipes 3 are set here (one is open and the other is standby. When one set of air intake branch pipes 3 fails, the other set is opened). When the air pressure at one end of the air outlet pipe 11 fluctuates and is too high, the air collecting pipe 2 is depressurized through the dispersion valve 6, and the gas is introduced into the air storage cylinder 71 through the return air duct 61. The return air pipe head 72 of the air storage cylinder 71 blocks the air guide hole 701 under the action of the valve core part 73. As the air storage amount in the air storage cylinder 71 increases, the gas pushes the piston rod 74 to slide backward until the end of the piston rod 74 touches the contact The contact switch 83 controls the motor 86 to drive the lead screw 81 to rotate. When the lead screw 81 rotates, the push plate 82 is driven to drive the guide rod 84 to slide on the limit block 85. When sliding, the push plate 82 pushes the piston rod 74 to compress the gas in the air cylinder 71 until the push rod 75 contacts the sealing valve head 733, and as it continues to move, the sealing valve head 733 is pushed away from the air guide hole 701, thereby opening the air guide hole 701 and transporting the gas in the air cylinder 71 back to the intake manifold 5. After compression and transportation, the control motor 86 is reversed to drive the push plate 82 to reset. After resetting, under the action of the reset spring 734, the valve stem 732 is driven to drive the sealing valve head 733 to reset to the rear side of the air guide hole 701, thereby sealing the return pipe head 72, so as to carry out the next gas collection and recovery.

[0031] In this embodiment, a guide plate 76 is fixedly installed at the end of the air cylinder 71. The guide plate 76 is provided with a through hole for the piston rod 74 to pass through, and a limit spring 77 is symmetrically installed on the side of the guide plate 76 facing the air cylinder 71. In this way, the piston rod 74 moves more smoothly under the guidance of the guide plate 76, and the limit spring 77 is provided to prevent the piston rod 74 from directly contacting the contact switch 83 when inflating in the air cylinder 71, thereby increasing the air storage capacity of the air cylinder 71 until the piston rod 74 compresses the limit spring 77 to the set compression amount and then contacts the contact switch 83.

[0032] It should also be noted that the connection point between the return air duct 61 and the air storage cylinder 71 is near one end of the return air pipe head 72. In this way, when the piston rod 74 pushes the air to recover, when the piston rod 74 moves inward to the extreme position, the piston rod 74 can seal the return air duct 61, preventing the return air duct 61 from communicating with the outside world, which can further reduce the dispersion of gas.

[0033] In the embodiments of the present invention, please refer to Figures 1 to 5 A temperature control component 9 for heating the air intake branch pipe 3 is also installed on the skid-mounted seat 1. The temperature control component 9 includes a heating pipe 91 sleeved on two groups of the air intake branch pipes 3. The two heating pipes 91 are connected by two conduits, one of which is provided with a circulation pump 92, and the other is provided with a temperature control oil tank 93. The temperature control oil tank 93 is filled with heat-conducting oil, and a constant temperature electric heating plate 931 and a temperature sensor 932 are embedded in the temperature control oil tank 93. The circulation pump 92, the constant temperature electric heating plate 931 and the temperature sensor 932 are all electrically connected to the control box 14.

[0034] It should be noted that: further, the temperature control component 9 can be used to heat the pipeline during gas transmission to prevent the gas from liquefying due to overcooling due to environmental factors, which affects the normal transmission of the gas. When the temperature control component 9 is in use, the heat transfer oil is continuously passed between the warming pipe 91 and the temperature control oil tank 93 through the circulation pump 92. The heat transfer oil in the warming pipe 91 exchanges heat with the air intake branch pipe 3 to heat the transported gas, avoiding gas liquefaction and frosting of the pipeline, which affects the transmission of the gas. The circulating heat transfer oil uses the temperature sensor 932 and the constant temperature electric heating plate 931 to regulate the temperature of the circulating heat transfer oil.

[0035] In the embodiments of the present invention, please refer to Figures 1 to 5 A shut-off valve 41 and a filter 42 are further provided on the intake branch pipe 3 on one side of the pressure reducing valve 4 . Both the pressure reducing valve 4 and the shut-off valve 41 are electrically connected to the control box 14 .

[0036] It should be noted that: when the gas transported by the intake branch pipe 3 leaks, fails to reduce pressure or encounters other accidents, the shut-off valve 41 can be controlled to cut off the delivery pipeline to protect the pipeline. When the gas is normally transported, the filter 42 is used to remove impurities in the gas to prevent the impurities in the gas from entering the combustion chamber of the generator and affecting the normal operation of the generator.

[0037] In the embodiments of the present invention, please refer to Figures 1 to 5 A gas flow meter 12 and a pressure gauge 13 are installed on the gas outlet pipe 11 , and the gas flow meter 12 is electrically connected to the control box 14 .

[0038] It should be noted that the gas flow meter 12 is used to detect and regulate the delivery of the gas, so as to improve the accuracy of the gas supply.

[0039] The working principle of the safe pressure reducing skid for gas power generation provided by the utility model is as follows:

[0040] During use, the air intake manifold 5 is connected to the natural gas storage tank, and the air outlet pipe 11 is connected to the air intake pipe of the generator. Then, the pressure reducing valve 4 is opened to transport the natural gas in the storage tank to the generator after decompression through the air intake branch pipe 3 and the air manifold 2. Two sets of air intake branch pipes 3 are set here (one is open and the other is standby. When one set of air intake branch pipes 3 fails, the other set is opened). When the air pressure at one end of the air outlet pipe 11 fluctuates and is too high, the air manifold 2 is depressurized through the dispersion valve 6, and the gas is introduced into the air storage cylinder 71 through the return air duct 61. The return air pipe head 72 of the air storage cylinder 71 blocks the air guide hole 701 under the action of the valve core member 73. As the air storage amount in the air storage cylinder 71 increases, the gas pushes the piston rod 74 to slide backward until the end of the piston rod 74 touches the contact switch 8 3. The contact switch 83 controls the motor 86 to drive the lead screw 81 to rotate. When the lead screw 81 rotates, the push plate 82 is driven to drive the guide rod 84 to slide on the limit block 85. When sliding, the push plate 82 pushes the piston rod 74 to compress the gas in the gas storage cylinder 71 until the push rod 75 contacts the sealing valve head 733. As it continues to move, the sealing valve head 733 is pushed away from the air guide hole 701, thereby opening the air guide hole 701 and transporting the gas in the gas storage cylinder 71 back to the intake manifold 5. After compression and transportation, the control motor 86 is reversed to drive the push plate 82 to reset. After resetting, under the action of the reset spring 734, the valve stem 732 is driven to drive the sealing valve head 733 to reset to the rear side of the air guide hole 701, thereby sealing the return pipe head 72, thereby carrying out the next gas collection and recovery;

[0041] Furthermore, the temperature control component 9 can be used to heat the pipeline during gas transmission to prevent the gas from being liquefied due to overcooling due to environmental factors, thereby affecting the normal transmission of the gas.

[0042] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0043] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A safety pressure reducing skid for gas power generation, comprising: A skid-mounted seat (1), and an air outlet pipe (11) fixedly mounted on one side of the skid-mounted seat (1), a control box (14) being mounted on a corner of the skid-mounted seat (1); It is characterized by further comprising: The air collecting pipe (2) is fixedly mounted on the middle part of the skid-mounted seat (1), and the middle part of the air collecting pipe (2) is connected to the air outlet pipe (11), and both ends of the air collecting pipe (2) are connected to the air inlet branch pipe (3), and the ends of the two groups of air inlet branch pipes (3) facing away from the air collecting pipe (2) are installed with pressure reducing valves (4), and the ends of the pressure reducing valves (4) facing away from the air inlet branch pipe (3) are commonly connected to the air inlet main pipe (5), and the middle part of the air collecting pipe (2) is connected to the dispersion valve (6), and the outlet end of the dispersion valve (6) is connected to the A return air duct (61) is provided, and a return air assembly (7) is installed between the return air duct (61) and the intake manifold (5). The return air assembly (7) includes an air storage cylinder (71), and an integrally formed return air pipe head (72) is provided at the top end of the air storage cylinder (71). The front end of the return air pipe head (72) is connected to the intake manifold (5) by docking. A piston rod (74) is movably installed in the air storage cylinder (71), and a driving member (8) for driving the piston rod (74) to move is installed on the skid-mounted seat (1).

2. The safety pressure reducing skid for gas power generation according to claim 1, characterized in that: One end of the return air pipe head (72) inserted into the intake manifold (5) is provided with a plurality of air guide holes (701), and a valve core member (73) for sealing the air guide holes (701) is installed in the return air pipe head (72). The front end of the piston of the piston rod (74) is provided with a push rod (75) that cooperates with the valve core member (73). The valve core member (73) includes a blocking cover (731), the blocking cover (731) is fixedly installed on one end of the return air pipe head (72), and a valve stem (732) is inserted into the blocking cover (731). The end of the valve stem (732) extending into the return air pipe head (72) is fixedly installed with a sealing valve head (733), and a return spring (734) is sleeved on the valve stem (732).

3. The safety pressure reducing skid for gas power generation according to claim 1, characterized in that: A guide plate (76) is fixedly mounted on the end of the air storage cylinder (71). The guide plate (76) is provided with a through hole for the piston rod (74) to pass through. A limit spring (77) is symmetrically mounted on one side of the guide plate (76) facing the air storage cylinder (71).

4. The safety pressure reducing skid for gas power generation according to claim 1, characterized in that: The driving member (8) includes a screw (81), which is rotatably mounted on the skid mount (1) and is located directly below the air cylinder (71), and a push plate (82) is threadedly mounted on the screw (81), and a contact switch (83) is embedded on the push plate (82), and the contact switch (83) is electrically connected to the control box (14). The contact switch (83) is located directly behind the piston rod (74), and guide rods (84) are fixedly mounted on both sides of the push plate (82). A limit block (85) is mounted on the skid mount (1), and the limit block (85) is provided with a through hole that slides with the guide rod (84). A motor (86) for driving the screw (81) to rotate is mounted on the skid mount (1), and the motor (86) is electrically connected to the control box (14).

5. The safety pressure reducing skid for gas power generation according to claim 1, characterized in that: The skid-mounted seat (1) is also provided with a temperature control assembly (9) for heating the air intake branch pipe (3). The temperature control assembly (9) includes a heating pipe (91) sleeved on two groups of the air intake branch pipes (3). The two heating pipes (91) are connected via two conduits, one of which is provided with a circulation pump (92) and the other is provided with a temperature control oil tank (93). The temperature control oil tank (93) is filled with heat-conducting oil, and a constant temperature electric heating plate (931) and a temperature sensor (932) are embedded in the temperature control oil tank (93). The circulation pump (92), the constant temperature electric heating plate (931) and the temperature sensor (932) are all electrically connected to the control box (14).

6. The safety pressure reducing skid for gas power generation according to claim 1, characterized in that: A shut-off valve (41) and a filter (42) are also provided on the intake branch pipe (3) on one side of the pressure reducing valve (4). Both the pressure reducing valve (4) and the shut-off valve (41) are electrically connected to the control box (14).

7. The safety pressure reducing skid for gas power generation according to claim 1, characterized in that: A gas flow meter (12) and a pressure gauge (13) are installed on the gas outlet pipe (11), and the gas flow meter (12) is electrically connected to the control box (14).

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