Sewerage system based on oil and gas field compressor

Abstract

The utility model discloses a sewerage system based on an oil and gas field compressor, which comprises an outer shell, a communicating pipe is arranged at the top of the outer shell, a plurality of buffer adjusting cavities are arranged in the outer shell, sewage inlets are arranged at the tops of the buffer adjusting cavities, and rotating valves are arranged at the sewage inlets. The sewage inlet is communicated with the communicating pipe through the rotating valve, an outlet pipe is arranged at the bottom of the buffer adjusting cavity, a sewage discharging channel is formed in the bottom of the outer shell, and the outlet pipe is aligned to the sewage discharging channel; and a laminate buffer assembly is arranged in the buffer adjusting cavity and is positioned between the sewage inlet and the outlet pipe. According to the utility model, the purpose of effectively sharing impact pressure is achieved through the combined action of a plurality of buffer adjusting cavities, and the flowing of sewage is stabilized through the guiding action of the laminate buffer component, so that the pulsation impact of the sewage when the sewage enters the main sewage discharge pipeline is avoided.

Description

Technical Field

[0001] The utility model relates to the field of oil and gas field compressor sewage discharge equipment, in particular to an oil and gas field compressor sewage discharge system. Background Art

[0002] The oil and gas field compressor sewage discharge system is a complex environmental protection and resource recovery and reuse system.

[0003] The amount of sewage contained in the gas at the wellhead of oil and gas fields is large. A large amount of sewage is discharged from the inlet main pipeline after separation. A large amount of water is also precipitated after each stage of compression in the compressor. The traditional sewage discharge structure with the sewage valve directly opened will cause a sudden change in the main pipeline pressure. The pressure fluctuation of the entire compressor pipeline is large, which is not conducive to the process control of the pipeline. In addition, the sewage discharge pulsation is large, the pressure head is high, and the flow rate is fast, which has a very strong impact on the sewage discharge pipeline, which is not conducive to the long-term stable operation of the sewage discharge system. Therefore, how to achieve the stability of the sewage discharge pressure through the sewage discharge system before entering the sewage discharge pipeline, so as to ensure that there is no large fluctuation in the pipeline during the sewage discharge process on the one hand, and control the flow rate of the sewage discharge pipeline on the other hand, reduce the pulsation impact, and ensure the long-term stable operation of the compressor, has become an urgent problem to be solved in the field of oil and gas field compressor sewage discharge equipment. Utility Model Content

[0004] The purpose of the present utility model is to overcome the shortcomings of the prior art in that the sewage pipe is subjected to pulsating impact due to the large fluctuation of sewage water pressure during sewage discharge, which is not conducive to the long-term stable operation of the sewage discharge system. A sewage discharge system based on an oil and gas field compressor is provided, which effectively shares the impact pressure through the joint action of a number of buffer adjustment chambers, and stabilizes the flow of sewage through the guiding action of the layer buffer assembly, avoiding pulsating impact when the sewage enters the sewage main pipe.

[0005] The purpose of this utility model is mainly achieved through the following technical solutions:

[0006] The sewage discharge system of an oil and gas field compressor includes an outer shell, a connecting pipe is provided on the top of the outer shell, a plurality of buffer adjustment chambers are provided in the outer shell, a sewage inlet is provided on the top of the buffer adjustment chamber, a rotary valve is provided at the sewage inlet, the sewage inlet and the connecting pipe are connected through the rotary valve, an outlet pipe is provided at the bottom of the buffer adjustment chamber, a sewage discharge channel is provided at the bottom of the outer shell, and the outlet pipe is aligned with the sewage discharge channel;

[0007] A layer plate buffer assembly is provided in the buffer adjustment chamber, and the layer plate buffer assembly is located between the sewage inlet and the outlet pipe.

[0008] Further, the buffer adjusting cavity comprises a buffer cavity body, the layer plate buffer assembly is located in the buffer cavity body, a bearing plate is arranged below the layer plate buffer assembly, the bearing plate can completely cover the cross section of the buffer cavity body and is fixed with the buffer cavity body, a flow gap is arranged on the bearing plate;

[0009] A rotating flow limiting arc plate is arranged on the bearing plate, and the rotating flow limiting arc plate can block the flow gap.

[0010] Further, the rotating flow limiting arc plate comprises a rotating shaft, the rotating shaft is rotationally connected with the buffer cavity body, a connecting rod is connected with the side surface of the rotating shaft, one end of the connecting rod is fixed with the rotating shaft, and the other end of the connecting rod is provided with a semicircular arc plate, one end of the semicircular arc plate penetrates through the bearing plate, and the other end of the semicircular arc plate extends into the flow gap.

[0011] Further, the layer plate buffer assembly comprises a plurality of first layer plates and a plurality of second layer plates, and the first layer plates and the second layer plates are longitudinally staggered in the buffer adjusting cavity.

[0012] A first gap is arranged between the first layer plates and the inner wall of the buffer adjusting cavity, a second gap is arranged between the second layer plates and the inner wall of the buffer adjusting cavity, and the first gap and the second gap are oppositely distributed with the axis of the buffer adjusting cavity as a center line.

[0013] Further, a straight flow channel is arranged in the outer shell body, a side blocking air bag is arranged at the upper port of the straight flow channel, and the side blocking air bag can expand to block the upper port of the straight flow channel or contract to open the upper port of the straight flow channel.

[0014] Further, the side blocking air bag comprises a gas-tight cavity body, the gas-tight cavity body penetrates through the outer shell body and is fixed with the outer shell body, a gas pump is fixed on one side of the gas-tight cavity body outside the outer shell body, a corrugated inner tube is fixed on one side of the gas-tight cavity body inside the outer shell body, a communication port is arranged between the gas-tight cavity body and the corrugated inner tube, and the gas pump, the gas-tight cavity body and the corrugated inner tube are internally communicated.

[0015] An outer cladding layer is arranged outside the corrugated inner tube, and the outer cladding layer can stretch and contract with the corrugated inner tube.

[0016] Further, a fluid adjusting assembly is arranged in the buffer adjusting cavity close to the outlet pipe, the fluid adjusting assembly comprises a frame body, the frame body is fixed with the buffer adjusting cavity, a driving gear is mounted on the frame body, a sliding flow limiting plate is arranged below the driving gear, the sliding flow limiting plate can cover the pipe port of the outlet pipe, a rack is fixed on the sliding flow limiting plate, and the rack is engaged with the driving gear.

[0017] Furthermore, an outlet one-way valve is provided in the sewage discharge channel, and the outlet one-way valve includes a mounting plate, the mounting plate is fixed to the sewage discharge channel, and a rod body is provided on the mounting plate and passes through the mounting plate, one end of the rod body extends into the outer shell and is fixed with a limited end head, and the other end thereof extends to the outside and is fixed with a blocking plate;

[0018] A tension spring is sleeved on the rod body, one end of the tension spring is fixed to the blocking plate, and the other end of the tension spring is fixed to the carrying plate.

[0019] Furthermore, the rotary valve includes an intercepting cylinder, the side of which can completely cover the sewage inlet, and the intercepting cylinder is rotatably connected to the outer shell;

[0020] The intercepting cylinder is provided with a flow gap, and the flow gap can partially cover the sewage inlet;

[0021] The outer cover of the intercepting cylinder is provided with a valve outer cover, which is fixed to the outer shell and can block the sewage inlet. The valve outer cover is provided with a flow inlet at the intercepting cylinder.

[0022] In summary, the present invention has the following beneficial effects compared with the prior art:

[0023] In the utility model, when there is only one buffer adjustment chamber, sewage can be passed into the buffer adjustment chamber through the sewage inlet, and the flow rate of the sewage entering the sewage inlet is controlled by rotating the valve. The layer buffer assembly in the outer shell can release the impact force of the sewage through layered circulation. After the impact force of the sewage is eliminated, the sewage is discharged into the sewage channel through the outlet pipe. The sewage channel is connected to the sewage main pipeline, so that the sewage with the impact force and pulsation impact eliminated is discharged into the sewage main pipeline.

[0024] When multiple buffering and regulating chambers are provided, the sewage pressure at the connecting pipe can be shared by the multiple buffering and regulating chambers, reducing the sewage pressure by diverting the flow and increasing the flow rate, thus preventing water blockage. After the sewage in the multiple buffering and regulating chambers eliminates the pulsation shock and water impact force, it is combined and discharged through the sewage discharge channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the accompanying drawings:

[0026] Figure 1 This is a schematic diagram of the structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the intercepting cylinder of the utility model;

[0028] Figure 3 This is a schematic diagram of the side blocking airbag structure of the utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the rotating current limiting arc plate of the utility model;

[0030] Figure 5 This is a schematic diagram of the semicircular arc plate structure of the utility model;

[0031] The names corresponding to the figure numbers are: 1. separator; 2. separation drain pipe; 3. buffer chamber; 4. rotary valve; 41. flow gap; 42. intercepting cylinder; 43. valve outer cover; 5. first layer plate; 6. side sealing airbag; 61. outer covering layer; 62. corrugated inner tube; 63. connecting port; 64. air pump; 65. airtight chamber; 7. second layer plate; 8. fluid regulating assembly; 81. frame; 82. driving gear; 83. rack; 84. outlet pipe; 85. sliding flow limiting plate; 9. outlet one-way valve; 91. limiting end; 92. rod body; 93. mounting plate; 94. sewage discharge channel; 95. tension spring; 96. sealing plate; 10. bearing plate; 11. rotating flow limiting arc plate; 111. rotating shaft; 112. connecting rod; 113. semicircular arc plate; 12. direct current channel; 13. outer shell. DETAILED DESCRIPTION

[0032] 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 in conjunction with embodiments and drawings. The schematic implementation methods of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0033] Example:

[0034] like Figures 1 to 5 As shown, this embodiment relates to a sewage discharge system for an oil and gas field compressor, comprising an outer shell 13, a connecting pipe provided at the top of the outer shell 13, a plurality of buffer adjustment chambers provided in the outer shell 13, a sewage inlet provided at the top of the buffer adjustment chamber, a rotary valve 4 provided at the sewage inlet, the sewage inlet and the connecting pipe being connected via the rotary valve 4, an outlet pipe 84 provided at the bottom of the buffer adjustment chamber, a sewage discharge channel 94 provided at the bottom of the outer shell 13, and the outlet pipe 84 aligned with the sewage discharge channel 94;

[0035] A layer plate buffer assembly is provided in the buffer adjustment chamber, and the layer plate buffer assembly is located between the sewage inlet and the outlet pipe 84 .

[0036] At present, there is a large amount of sewage in the wellhead gas of oil and gas fields, a large amount of sewage is discharged after separation of the inlet main pipeline, and a large amount of water is separated after each stage of compression of the compressor. The traditional sewage discharge valve directly opens the sewage discharge structure, which can cause sudden change of the pressure of the main pipeline, large pressure fluctuation of the whole compressor pipeline, and is not conducive to the process control of the pipeline. Moreover, the sewage pulsation is large, the pressure head is high, the flow velocity is fast, the impact effect on the sewage pipeline is very strong, and it is not conducive to the long-term stable operation of the sewage system. Therefore, it is hoped that the sewage system can be formed by combining the regulating valve group, on the one hand to ensure that there is no large fluctuation in the pipeline during the sewage discharge process, and on the other hand to control the flow velocity of the sewage pipeline, reduce the pulsation impact, and ensure the long-term stable operation of the compressor.

[0037] In order to solve the problem of large pressure fluctuation caused by sewage discharge of the compressor process pipeline, avoid the problem of large sewage pipeline pulsation and strong impact on the pipeline during the sewage discharge process, and ensure the long-term stable operation of the compressor, the embodiment sets a sewage system to ensure that the sewage impact force before entering the sewage main pipeline is consumed, thereby ensuring the stability and safety of the sewage main pipeline.

[0038] The outer shell 13 is externally provided with a separator 1, and a separation liquid discharge pipe 2 of the separator 1 is in communication with a communication pipe on the outer shell 13.

[0039] In the embodiment, the outer shell 13 is used to accommodate the buffer adjusting cavities, and the buffer adjusting cavities are used to share the liquid discharged from the separation liquid discharge pipe 2 of the separator 1. When the number of the buffer adjusting cavities is only one, the sewage can be introduced into the buffer adjusting cavity through the sewage inlet, and the flow velocity of the sewage introduced into the sewage inlet can be controlled through the rotating valve 4. The layer plate buffer assembly in the outer shell 13 can release the impact force of the sewage through the layered flow communication mode. After the sewage impact force is eliminated, the sewage is discharged into the sewage discharge channel 94 through the outlet pipe 84. The sewage discharge channel 94 is in communication with the sewage main pipeline, so that the sewage with eliminated impact force and pulsation impact is discharged into the sewage main pipeline.

[0040] When a plurality of buffer adjusting cavities are provided, the sewage pressure at the communication pipe can be shared by the plurality of buffer adjusting cavities, the sewage can be depressurized and the flow capacity can be increased through the flow splitting mode, and the water blockage can be avoided. After the sewage in the plurality of buffer adjusting cavities eliminates the pulsation impact and the water impact force, the sewage is converged and discharged through the sewage discharge channel 94.

[0041] The buffer adjusting cavity comprises a buffer cavity 3, and the layer plate buffer assembly is located in the buffer cavity 3. A bearing plate 10 is arranged below the layer plate buffer assembly, the bearing plate 10 can completely cover the cross section of the buffer cavity 3 and is fixed with the buffer cavity 3, and a flow gap is arranged on the bearing plate 10.

[0042] The supporting plate 10 is provided with a rotating flow-limiting arc plate 11 , and the rotating flow-limiting arc plate 11 can block the flow gap.

[0043] In this embodiment, the buffer cavity 3 is used to accommodate the layer buffer assembly, and the buffer cavity 3 can provide support for the supporting plate 10. The supporting plate 10 can block the sewage in the buffer cavity 3 and guide the flow of sewage through the flow gap. The opening degree of the flow gap is limited by the rotating flow limiting arc plate 11, thereby achieving the purpose of regulating the sewage flow at the outlet pipe 84.

[0044] The rotating flow-limiting arc plate 11 includes a rotating shaft 111, which is rotatably connected to the buffer chamber 3. A connecting rod 112 is connected to the side of the rotating shaft 111. One end of the connecting rod 112 is fixed to the rotating shaft 111, and the other end is provided with a semi-circular plate 113. One end of the semi-circular plate 113 passes through the supporting plate 10, and the other end extends into the flow gap.

[0045] In this embodiment, the rotating shaft 111 is used to drive the connecting rod 112 to rotate, and the connecting rod 112 can drive the semi-circular plate 113 to rotate around the rotating shaft 111. The rotating shaft 111 is located on the supporting plate 10, so when the connecting rod 112 drives the semi-circular plate 113 to rotate, the semi-circular plate 113 can effectively block the flow gap, thereby preventing sewage from flowing into the outlet pipe.

[0046] The layer plate buffer assembly includes a plurality of first layer plates 5 and a plurality of second layer plates 7, and the first layer plates 5 and the second layer plates 7 are longitudinally staggered in the buffer adjustment cavity;

[0047] A first notch is provided between the first layer plate 5 and the inner wall of the buffer adjustment cavity, and a second notch is provided between the second layer plate 7 and the inner wall of the buffer adjustment cavity. The first notch and the second notch are relatively distributed with the axis of the buffer adjustment cavity as the center line.

[0048] In this embodiment, the first plate 5 and the second plate 7 are staggered, so that a serpentine flow of sewage can be formed through the relatively distributed first and second gaps. After the sewage enters the first plate 5, it flows into the second plate 7 from the first gap, and flows into the first plate 5 of the next layer through the second gap on the second plate 7. During the flow process, since there are multiple channels that need to be turned, the impact force and pulsation impact of the sewage are consumed, and the flow rate can be controlled at the outlet pipe 84 to further avoid the sewage main pipeline from being impacted.

[0049] A DC channel 12 is provided in the outer shell 13 , and a side blocking airbag 6 is provided at the upper end of the DC channel 12 . The side blocking airbag 6 can expand to block the upper end of the DC channel 12 or contract to release the upper end of the DC channel 12 .

[0050] The direct current channel 12 provided in the outer shell 13 can allow sewage to directly flow into the sewage discharge channel 94. When the amount of sewage is small or the amount of sewage is too large and exceeds the capacity limit of the buffer chamber, the direct current channel 12 can be released by opening the side blocking airbag 6, so that the sewage can be directly discharged into the sewage discharge channel 94 and enter the sewage main pipe through the direct current channel 12.

[0051] When the sewage does not need to flow into the direct current channel 12, the port of the direct current channel is blocked by the side blocking airbag, thereby ensuring that the sewage can be discharged into the sewage main pipeline through the buffer accommodating cavity.

[0052] The side blocking airbag 6 includes an airtight cavity 65, which passes through the outer shell 13 and is fixed to the outer shell 13. An air pump 64 is fixed to the side of the airtight cavity 65 located outside the outer shell 13, and a corrugated inner tube 62 is fixed to the side of the airtight cavity 65 located inside the outer shell 13. A communication port 63 is provided between the corrugated inner tube 62 and the airtight cavity 65, and the air pump 64, the airtight cavity 65 and the inner part of the corrugated inner tube 62 are in communication.

[0053] An outer covering layer 61 is provided outside the corrugated inner tube 62 , and the outer covering layer 61 can expand and contract along with the corrugated inner tube 62 .

[0054] The side-sealing airbags separate the bellows inner tube and the air pump through the airtight cavity, making the contraction and expansion of the bellows inner tube more linear, preventing turbulence when sewage is discharged into the direct current channel. Furthermore, the airtight cavity provides a support base, allowing the air pump to be placed outside the outer shell, thereby preventing it from being affected by the water flow inside the outer shell.

[0055] An outer covering layer is provided outside the corrugated inner tube, and the outer covering layer is made of flexible material, so that the corrugated inner tube can be squeezed against the inner wall of the outer shell through the outer covering layer when it expands, thereby improving the sealing performance of the side sealing airbag and ensuring the sealing effect of the side sealing airbag.

[0056] A fluid regulating assembly 8 is provided in the buffer regulating chamber near the outlet pipe 84. The fluid regulating assembly 8 includes a frame 81, which is fixed to the buffer regulating chamber. A driving gear 82 is installed on the frame 81. A sliding limiting plate 85 is provided below the driving gear 82. The sliding limiting plate 85 can cover the pipe mouth of the outlet pipe 84. A rack 83 is fixed on the sliding limiting plate 85, and the rack 83 is engaged with the driving gear 82.

[0057] The fluid regulating assembly covers or partially covers the outlet pipe 84 by sliding the sliding limiting plate 85, thereby changing the flow rate at the outlet pipe 84. The frame 81 can support the driving gear 82 by being fixed to the buffer regulating chamber. The driving gear 82 is driven to rotate by a mechanism of existing technology such as a motor or a crank connecting rod, and the rack 83 is pushed by the rotation of the driving gear 82. Since the rack 83 is fixed on the sliding limiting plate 85, it can drive the position of the sliding limiting plate 85 to change the degree of overlap between the sliding limiting plate 85 and the outlet pipe 84, thereby achieving the purpose of regulating the flow at the outlet pipe 84.

[0058] An outlet one-way valve 9 is provided in the sewage discharge passage 94. The outlet one-way valve 9 includes a mounting plate 93 fixed to the sewage discharge passage 94. A rod 92 is provided on the mounting plate 93 and passes through the mounting plate 93. One end of the rod 92 extends into the outer shell 13 and is fixed with a limit end 91, and the other end extends to the outside and is fixed with a blocking plate 96.

[0059] A tension spring 95 is sleeved on the rod body 92 . One end of the tension spring 95 is fixed to the blocking plate 96 , and the other end thereof is fixed to the carrying plate 93 .

[0060] In this embodiment, an outlet one-way valve 9 is provided in the sewage channel 94, which can effectively prevent sewage backflow. The carrying plate 93 is used to limit and guide the rod body 92, and the fixing of the carrying plate 93 and the sewage channel 94 ensures that the rod body 92 will not fall out under the restriction of the limiting end 91. The blocking plate 96 is pulled toward the end of the sewage channel 94 by the setting of the tension spring 95, thereby blocking the sewage channel 94. Under the action of the gravity of the sewage, the blocking plate 96 can be opened by stretching the tension spring 95, thereby ensuring that the sewage can be discharged from the sewage channel 94. When backflow occurs, the blocking plate 96 is pushed back and blocks the backflow path of the sewage.

[0061] The rotary valve 4 includes a cut-off cylinder 42 , the side of which can completely cover the sewage inlet, and the cut-off cylinder 42 is rotatably connected to the outer shell 13 ;

[0062] The intercepting cylinder 42 is provided with a flow gap 41, and the flow gap 41 can partially cover the sewage inlet;

[0063] The outer cover of the intercepting cylinder 42 is provided with a valve outer cover 43 , which is fixed to the outer shell 13 and can block the sewage inlet. The valve outer cover 43 has a flow inlet at the intercepting cylinder 42 .

[0064] In this embodiment, the rotary valve 4 can effectively adjust the degree of overlap between the flow gap 41 and the sewage inlet through the rotation of the intercepting cylinder 42. When the flow gap 41 and the sewage inlet are staggered to different degrees, the different opening amounts of the sewage inlet can be adjusted, thereby achieving the purpose of adjusting the flow at the sewage inlet. The valve outer cover 43 prevents sewage from entering the sewage inlet from other angles by covering the intercepting cylinder 42, so that the overlapping position of the sewage inlet and the flow gap 41 becomes the position where the sewage flows into the buffer adjustment chamber. In this embodiment, the driving of the rotation of the intercepting cylinder 42 is achieved by existing technology.

[0065] In the actual application of this embodiment, there are two situations: normal sewage discharge and sewage discharge with sudden increase in water content:

[0066] During normal sewage system operation, when the liquid level in the separator reaches the upper limit, the liquid level switch (high) issues a command to open the sewage valve. Simultaneously, a remote level signal controls the opening of the regulating valve. The regulating valve gradually opens until the liquid level drops by 20-30 mm / minute and remains open. At this point, the pressure and flow rate of sewage flowing into the outer shell 13 are stable. The sewage can be discharged through the direct current channel 12 by activating the air pump 64 to contract the inner bellows 62.

[0067] When the liquid level reaches the lower limit, the liquid level switch (low) issues a command to close the drain valve and the regulating valve, and the drain process ends. During this time, there is no pressure fluctuation in the process main line, no pulsation impact in the drain pipe, and the drain system is stable.

[0068] In the process of the sewage discharge system with sudden increase in water content, when the water content of the gas at the wellhead of the oil and gas field suddenly increases, the opening of the regulating valve has been opened to 100% during the sewage discharge process, but it still cannot meet the discharge demand, and the liquid level remote transmission signal will issue an insufficient discharge alarm. At this time, more valves are manually opened and all discharged into the outer shell 13. The water flow impact is eliminated by the buffer adjustment chamber in the outer shell 13. The water pressure can also be adjusted by gradually opening more buffer adjustment chambers, and the liquid level reduction is observed on site. When the liquid level is discharged to the lower limit of the liquid level, it returns to the normal sewage discharge process, and the sewage discharge process with sudden increase in water content ends. This sewage discharge system process is similar to the normal sewage discharge system process, but by increasing the valve to speed up the sewage discharge and by using the layer buffer assembly in this embodiment to eliminate the pulsation impact and water body impact caused by the sudden increase in water pressure to a certain extent, the process main line has no pressure fluctuation, the sewage pipe has a slight pulsation impact, and the sewage discharge system remains stable.

[0069] When the compressor stops, the separator pressure drops to normal pressure, and the valve directly connected to the sewage main pipe is opened manually to discharge sewage, and then closed after the sewage is discharged.

[0070] The compressor blowdown system ensures that the main process gas is free of pressure fluctuations and the blowdown pipeline is free of pulsation during the blowdown process. This is particularly true when discharging gas from wellheads in oil and gas fields with high water content. It also effectively regulates the system even when water content suddenly rises, ensuring the normal operation of the compressor.

[0071] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific implementation method of the utility model and is not intended to limit the scope of protection of the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A sewage discharge system based on an oil and gas field compressor comprises an outer shell (13), wherein a connecting pipe is provided on the top of the outer shell (13), characterized in that: The outer shell (13) is provided with a plurality of buffer adjustment chambers, the top of the buffer adjustment chamber is provided with a sewage inlet, the sewage inlet is provided with a rotary valve (4), the sewage inlet and the connecting pipe are connected through the rotary valve (4), the bottom of the buffer adjustment chamber is provided with an outlet pipe (84), the bottom of the outer shell (13) is provided with a sewage discharge channel (94), and the outlet pipe (84) is aligned with the sewage discharge channel (94); A layer plate buffer assembly is provided in the buffer adjustment chamber, and the layer plate buffer assembly is located between the sewage inlet and the outlet pipe (84).

2. The oil and gas field compressor sewage discharge system according to claim 1, characterized in that: The buffer adjustment cavity comprises a buffer cavity (3), the layer plate buffer assembly is located in the buffer cavity (3), a bearing plate (10) is provided below the layer plate buffer assembly, the bearing plate (10) is capable of completely covering the cross section of the buffer cavity (3) and is fixed to the buffer cavity (3), and a flow notch is provided on the bearing plate (10); A rotating flow-limiting arc plate (11) is provided on the bearing plate (10), and the rotating flow-limiting arc plate (11) is capable of blocking the flow gap.

3. The oil and gas field compressor sewage discharge system according to claim 2, characterized in that: The rotating flow-limiting arc plate (11) comprises a rotating shaft (111), the rotating shaft (111) being rotatably connected to the buffer chamber (3), a connecting rod (112) being connected to the side of the rotating shaft (111), one end of the connecting rod (112) being fixed to the rotating shaft (111), and the other end of the connecting rod (112) being provided with a semicircular arc plate (113), one end of the semicircular arc plate (113) passing through the supporting plate (10), and the other end of the semicircular arc plate (113) extending into the flow gap.

4. The oil and gas field compressor sewage discharge system according to claim 1, characterized in that: The layer plate buffer assembly comprises a plurality of first layer plates (5) and a plurality of second layer plates (7), wherein the first layer plates (5) and the second layer plates (7) are longitudinally staggered in the buffer adjustment cavity; A first notch is provided between the first layer plate (5) and the inner wall of the buffer adjustment cavity, and a second notch is provided between the second layer plate (7) and the inner wall of the buffer adjustment cavity. The first notch and the second notch are relatively distributed with the axis of the buffer adjustment cavity as the center line.

5. The oil and gas field compressor sewage discharge system according to claim 1, characterized in that: A direct current channel (12) is provided in the outer shell (13), and a side blocking airbag (6) is provided at the upper end of the direct current channel (12). The side blocking airbag (6) can expand to block the upper end of the direct current channel (12) or contract to release the upper end of the direct current channel (12).

6. The oil and gas field compressor sewage discharge system according to claim 5, characterized in that: The side-sealing airbag (6) comprises an airtight cavity (65), the airtight cavity (65) passes through the outer shell (13) and is fixed to the outer shell (13), an air pump (64) is fixed on the side of the airtight cavity (65) located outside the outer shell (13), a corrugated inner tube (62) is fixed on the side of the airtight cavity (65) located inside the outer shell (13), a communication port (63) is provided between the corrugated inner tube (62) and the airtight cavity (65), and the air pump (64), the airtight cavity (65) and the corrugated inner tube (62) are internally communicated; An outer coating layer (61) is provided outside the corrugated inner tube (62), and the outer coating layer (61) can expand and contract along with the corrugated inner tube (62).

7. The oil and gas field compressor sewage discharge system according to claim 1, characterized in that: A fluid regulating assembly (8) is provided in the buffer regulating chamber near the outlet pipe (84), and the fluid regulating assembly (8) includes a frame (81), the frame (81) is fixed to the buffer regulating chamber, a driving gear (82) is mounted on the frame (81), a sliding flow limiting plate (85) is provided below the driving gear (82), the sliding flow limiting plate (85) can cover the pipe opening of the outlet pipe (84), a rack (83) is fixed on the sliding flow limiting plate (85), and the rack (83) is engaged with the driving gear (82).

8. The oil and gas field compressor sewage discharge system according to claim 1, characterized in that: An outlet one-way valve (9) is provided in the sewage discharge passage (94), and the outlet one-way valve (9) includes a mounting plate (93), the mounting plate (93) is fixed to the sewage discharge passage (94), and a rod (92) is provided on the mounting plate (93) and passes through the mounting plate (93), one end of the rod (92) extends into the outer shell (13) and is fixed with a limiting end (91), and the other end extends to the outside and is fixed with a blocking plate (96); A tension spring (95) is sleeved on the rod body (92), one end of the tension spring (95) is fixed to the blocking plate (96), and the other end is fixed to the carrying plate (93).

9. The oil and gas field compressor sewage discharge system according to claim 1, characterized in that: The rotary valve (4) comprises a cut-off cylinder (42), the side of which can completely cover the sewage inlet, and the cut-off cylinder (42) is rotatably connected to the outer shell (13); The intercepting cylinder (42) is provided with a flow gap (41), and the flow gap (41) can partially cover the sewage inlet; The outer cover of the intercepting cylinder (42) is provided with a valve outer cover (43), which is fixed to the outer shell (13) and can block the sewage inlet. The valve outer cover (43) is provided with a flow inlet at the intercepting cylinder (42).

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