Interstage bypass system of high-pressure piston compressor

Abstract

The invention discloses an interstage bypass system of a high-pressure piston compressor, and relates to the technical field of high-pressure piston compressor equipment.The interstage bypass system comprises a base system, and a host motor system is mounted on the top of the base system.The interstage bypass system has the beneficial effects that the base system and a cooler system are arranged, spiral cooling fins are used for increasing the cooling area, and the cooling efficiency is improved; the two ends of the spiral cooling fins are pressed tightly through hose clamps or fixed through spot welding, the whole bypass system is manufactured and installed simply and conveniently as much as possible, one end of the second-stage cooling pipeline is connected with the profile support, the bottoms of the two pipe clamps are connected with the profile support, and the two ends of the second-stage cooling pipeline are connected with the profile support. Due to the shutdown problem caused by gas overtemperature, the low-pressure-stage compression temperature cannot be increased, the reduction of the service life of equipment, the increase of the cost of spare parts and the like are avoided, the design size of a cooling system cannot be increased, the cooling load cannot be increased, the processing capacity of the equipment cannot be reduced, and gas waste is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-pressure piston compressor equipment, in particular to an inter-stage bypass system of a high-pressure piston compressor. BACKGROUND

[0002] The inter-stage design currently used in the field of high-pressure piston compressors is to cool the high-temperature gas compressed by the previous stage through a cooler before compression by the next stage. This often causes the gas temperature to be too high during the final stage compression, resulting in system alarms and shutdown, especially in areas where the ambient temperature is already high. The effect may not be so obvious during low-pressure stage compression, but it is particularly obvious during high-pressure compression.

[0003] There are also some solutions to this problem: For example, the exhaust gas of the previous stage before the final stage compression is introduced to the intake pipeline through a pipeline, which balances the over-temperature problem during the final stage high-pressure compression, but causes the temperature of the front-end intake to rise. Although it ensures that the temperature is below the high-temperature line of normal system operation, long-term operation increases the damage to the low-pressure stage parts of the compression host and the supporting filter, reducing the service life.

[0004] There is also a structural design that introduces a pipeline from the high-pressure stage to the blowdown pipeline, which is adjusted and controlled by a connecting flange to control the temperature of high-pressure compression. However, this method wastes the compressed gas of the entire system, reducing the operating efficiency of the system.

[0005] There is also a structural design that introduces a pipeline to a cooler as supplemental cooling to reduce the intake temperature of the highest pressure at the end. This effectively solves the problem of over-temperature intake, but it increases the size of the cooler system design, adds new interface pipelines, and causes complex piping problems.

[0006] Therefore, the above-mentioned solutions all have different degrees of problems, resulting in many problems during operation, and cannot meet the needs of normal use. Therefore, the present application needs to design an inter-stage bypass system of a high-pressure piston compressor to solve the above-mentioned problems. SUMMARY

[0007] The purpose of the present application is to provide an inter-stage bypass system of a high-pressure piston compressor to solve the problems presented in the background.

[0008] To achieve the above-mentioned purpose, the present application provides the following technical solution: an inter-stage bypass system of a high-pressure piston compressor, comprising a base system: A main machine motor system is installed on the top of the base system, a cooler system is installed on the top of the base system and on one side of the main machine motor system, an inter-stage bypass system is installed inside the cooler system and on the top of the base system, and the inter-stage bypass system is located on one side of the main machine motor system. The inter-stage bypass system comprises a first inter-stage bypass, a fixed frame is fixedly connected to the top of the base system and the bottom of the cooler system, the first inter-stage bypass is located inside the fixed frame, a second inter-stage bypass is mounted on one side of the first inter-stage bypass, and equidistantly distributed spiral heat dissipation fins are fixedly connected to the outer sides of the first inter-stage bypass and the second inter-stage bypass; One side of the first inter-stage bypass is provided with a two-stage exhaust manifold, straight-through joints are mounted at one ends of the first inter-stage bypass and the second inter-stage bypass, stainless steel sleeve pipes are sleeved on the outer sides of the straight-through joints, the other ends of the stainless steel sleeve pipes are connected with the two-stage exhaust manifold, and elbow joints are mounted between the stainless steel sleeve pipes and the two-stage exhaust manifold; the two-stage exhaust manifold is provided with a two-stage cooling pipeline on one side. The outer side of one end of another stainless steel sleeve pipe is provided with two pipe clamps, one end of another stainless steel sleeve pipe penetrates through one of the pipe clamps and is provided with a threaded joint, one ends of the two threaded joints are connected with the two-stage cooling pipeline, and the pipe clamps are finally fixed to profile supports of the cooler system; the specific operation is that the pipe clamp bottom plate is welded with the support, the stainless steel sleeve pipe is then pressed tightly, and finally the upper cover plate of the pipe clamp and the bolt are tightened to complete the installation; since the piston main machine is divided into two paths for each stage of compression, the design of the inter-stage bypass system is also divided into two paths, namely the first inter-stage bypass and the second inter-stage bypass, but the principles are the same; by increasing a stage inter-stage pipeline before the last stage of compression, the problem of shutdown caused by gas over-temperature during the operation of the entire device is effectively solved; the low-pressure stage compression temperature is not increased, the service life of the device is not reduced, the cost of spare parts is not increased, the design size of the cooling system is not increased, the cooling load is not increased, the processing capacity of the device itself is not reduced, and the waste of gas volume is avoided.

[0009] As a preferred embodiment of the present application, the outer side of the fixed frame is fixedly connected with a profile support, the two ends of the spiral heat dissipation fin are provided with a throat clamp, the spiral heat dissipation fin is used to increase the heat dissipation area and effectively reduce the temperature of the gas before entering the manifold, and the two ends of the spiral heat dissipation fin are pressed tightly or spot-welded by the throat clamp; the production and installation of the entire bypass system are as simple and convenient as possible.

[0010] As a preferred embodiment of the present application, one end of the two-stage cooling pipeline is connected with the profile support, the bottoms of the two pipe clamps are connected with the profile support, the tops of the pipe clamps are provided with an upper cover plate, and the tops of the upper cover plates are threadedly connected with symmetrically distributed bolts.

[0011] As a preferred embodiment of the present application, the other pipe clamp is internally provided with a delivery pipe, one end of the delivery pipe is connected with a threaded joint, and the other end of the delivery pipe is connected with a two-stage exhaust manifold.

[0012] As a preferred embodiment of the present application, the base system is a skid-mounted base of the whole set of equipment, the cooler system is used for cooling the compressed gas and lubricating oil at each stage, and all the pipelines are not embodied in the present application, and the inter-stage bypass system is the main improvement point of the present application.

[0013] As a preferred embodiment of the present application, the main motor system comprises a piston compression main machine, a coupling, a coupling cover and a main motor, the coupling cover is arranged on the top of the base system and at one side of the inter-stage bypass system, the coupling cover is internally provided with the coupling, one side of the coupling cover is provided with the main motor, the output end of the main motor is connected with the coupling, and the piston compression main machine is internally provided with a cylinder, and the output end of the cylinder is connected with a straight-through joint.

[0014] As a preferred embodiment of the present application, the bottom of the main motor is provided with a motor mounting rack, the motor mounting rack is internally provided with evenly distributed and internally extending tight screws, and the main motor system and the base system are connected through the tight screws and the motor mounting rack.

[0015] As a preferred embodiment of the present application, the top of the two-stage exhaust manifold is fixedly connected with two connecting flanges, the connecting flanges are used for being connected to the matched flanges of the exhaust of the main motor system, and then are combined into the two-stage exhaust manifold and then are introduced into the cooler system through the two-stage cooling pipeline.

[0016] As a preferred embodiment of the present application, the outer side of the main motor system is provided with a control panel, the base system, the main motor system and the cooler system are electrically connected with the control panel, the control panel is used for controlling the operation of the base system, the main motor system and the cooler system, and unified management of the electric power equipment is realized.

[0017] Compared with the prior art, the present application has the following beneficial effects: The present invention is provided with a base system, a host motor system and a cooler system. The base system is a skid-mounted base for the entire set of equipment. The cooler system is used to cool the compressed gas and lubricating oil at each stage. The present invention application does not reflect all pipelines. The interstage bypass system is the main improvement point of the present invention application. The internal threaded connection of the motor mounting frame is connected with locking screws that are evenly distributed and extend to the inside of the base system. The host motor system and the base system are connected through the locking screws and the motor mounting frame. The spiral heat dissipation fins are used to increase the heat dissipation area and even effectively reduce the gas temperature before entering the manifold. The two ends of the spiral heat dissipation fins are tightened by throat clamps, or point Welding fixation, the production and installation of the entire bypass system are as simple and convenient as possible. One end of the secondary cooling pipeline is connected to the profile bracket, and the bottoms of the two pipe clamps are connected to the profile bracket. The tops of the pipe clamps are installed with upper covers, and the tops of the upper covers are threaded with symmetrically distributed bolts. This patent is aimed at an interstage bypass system for high-pressure piston compressors. By using the interstage bypass system before the final high-pressure compression stage, the problem of high-temperature alarm shutdown during the operation of the entire equipment can be adjusted. At the same time, this bypass system does not require adjustment of the size of other systems, will not reduce the system operation efficiency, and will not reduce the service life of the equipment. Compared with the prior art, the technical solution of the present invention is as follows: by adding a section of interstage piping before the final compression stage, the shutdown problem caused by gas overheating during the operation of the entire equipment is effectively solved, the low-pressure stage compression temperature will not be increased, the equipment service life will not be shortened, the spare parts cost will not be increased, etc., the design size of the cooling system will not be increased, the cooling load will not be increased, the processing capacity of the equipment itself will not be reduced, and the waste of gas volume will be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Fig. 1 This is a schematic diagram of the overall structure of an interstage bypass system of a high-pressure piston compressor according to the present invention; Fig. 2 This is a schematic diagram of the connection structure between the main motor system and the interstage bypass system of an interstage bypass system of a high-pressure piston compressor of the present invention; Fig. 3 This is an enlarged schematic diagram of the structure of an interstage bypass system of an interstage bypass system of a high-pressure piston compressor of the present invention.

[0019] In the picture: 1. Base system; 11. First interstage bypass; 12. Second interstage bypass; 2. Host motor system; 3. Cooler system; 31. Secondary cooling pipeline; 4. Interstage bypass system; 41. Straight connector; 42. Stainless steel tubing; 43. Hose clamp; 44. Spiral cooling fins; 45. Elbow connector; 46. Threaded connector; 47. Pipe clamp; 48. Secondary exhaust manifold; 49. Connecting flange. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0021] Please refer to Figs. 1-3 The present application provides a technical solution: an inter-stage bypass system of a high-pressure piston compressor, comprising a base system 1, a main machine motor system 2 installed on the top of the base system 1, a cooler system 3 installed on the top of the base system 1 and located on one side of the main machine motor system 2, an inter-stage bypass system 4 installed inside the cooler system 3 and located on the top of the base system 1, and the inter-stage bypass system 4 located on one side of the main machine motor system 2. In the present application, the inter-stage bypass system 4 comprises a first inter-stage bypass 11, a fixed frame fixedly connected to the top of the base system 1 and located at the bottom of the cooler system 3, the first inter-stage bypass 11 located inside the fixed frame, a second inter-stage bypass 12 installed on one side of the first inter-stage bypass 11, and equidistantly distributed spiral cooling fins 44 fixedly connected to the outer sides of the first inter-stage bypass 11 and the second inter-stage bypass 12. In the present application, the first inter-stage bypass 11 is installed on one side of a second-stage exhaust manifold 48, the first inter-stage bypass 11 and the second inter-stage bypass 12 are each installed on one end of a straight-through connector 41, the outer sides of the straight-through connectors 41 are each sleeved with a stainless steel sleeve pipe 42, the other end of the stainless steel sleeve pipe 42 is connected to the second-stage exhaust manifold 48, a bend-through connector 45 is installed between the stainless steel sleeve pipe 42 and the second-stage exhaust manifold 48, the stainless steel sleeve pipe 42 is divided into two sections and connected through the bend-through connector 45, and the second-stage exhaust manifold 48 is installed on one side of a second-stage cooling pipe 31. In the present application, the outer side of one end of another stainless steel sleeve pipe 42 is installed with two pipe clamps 47, one end of the other stainless steel sleeve pipe 42 penetrates through one of the pipe clamps 47 and is installed with a threaded connector 46, and one end of each of the two threaded connectors 46 is connected to the second-stage cooling pipe 31. In actual use, the through joint 41 is connected to the cylinder before the fourth stage compression of the piston main machine, the stainless steel sleeve pipe 42 is connected with the through joint 41, the whole stainless steel sleeve pipe 42 is divided into two sections and connected through the elbow joint 45, the other bending pipes can be bent through a bending machine, and finally connected to the second stage cooling pipeline 31 of the previous stage through the threaded joint 46, so that if the temperature of the gas entering the fourth stage compression is too high, the gas can enter the second stage cooling pipeline 31 of the second stage through the bypass system, and then enter the cooler. At the same time, the spiral cooling fins 44 are installed on the stainless steel sleeve pipe 42 to increase the heat dissipation area and effectively reduce the temperature of the gas entering the manifold. The two ends of the spiral cooling fins 44 are pressed by the hose clamp 43 or spot welded. Finally, the pipe clamp 47 is fixed to the profile bracket of the cooler system 3. The specific operation is to weld the bottom plate of the pipe clamp 47 to the bracket, then press the stainless steel sleeve pipe 42, and finally tighten the upper cover plate of the pipe clamp 47 and the bolt to complete the installation. Since each stage of compression of the piston main machine is divided into two paths, the inter-stage bypass system is also divided into two paths, namely the first inter-stage bypass 11 and the second inter-stage bypass 12, but the principle is the same.

[0022] Please refer to Figs. 1-3 In the present scheme, the outer side of the fixed frame is fixedly connected with a profile bracket, and the two ends of the spiral cooling fins 44 are provided with a hose clamp 43. The spiral cooling fins 44 are used to increase the heat dissipation area and effectively reduce the temperature of the gas entering the manifold. The two ends of the spiral cooling fins 44 are pressed by the hose clamp 43 or spot welded. The whole bypass system is produced and installed as simply and conveniently as possible.

[0023] In the present scheme, one end of the second stage cooling pipeline 31 is connected with a profile bracket, and the bottom of the two pipe clamps 47 is connected with the profile bracket. The top of the pipe clamp 47 is provided with an upper cover plate, and the top of the upper cover plate is threadedly connected with symmetrically distributed bolts.

[0024] In the present scheme, the inside of the other pipe clamp 47 is provided with a conveying pipeline. One end of the conveying pipeline is connected with the threaded joint 46, and the other end of the conveying pipeline is connected with the second stage exhaust manifold 48.

[0025] Please refer to Figs. 1-3 In the present scheme, the base system 1 is a pry-mounted base of the whole equipment, and the cooler system 3 is used for cooling the gas and lubricating oil after each stage of compression. The whole pipeline is not embodied in the present application, and the inter-stage bypass system 4 is the main improvement point of the present application.

[0026] The host motor system 2 comprises a piston compression host, a shaft coupling, a shaft coupling cover and a main motor, the shaft coupling cover is arranged on the top of the base system 1 and one side of the inter-stage bypass system 4, the shaft coupling cover is internally provided with the shaft coupling, one side of the shaft coupling cover is provided with the main motor, the output end of the main motor is connected with the shaft coupling, the piston compression host is internally provided with a cylinder, and the output end of the cylinder is connected with the straight-through joint 41.

[0027] The bottom of the main motor is provided with a motor mounting frame, the motor mounting frame is internally threadedly connected with the set of set screws which are equidistantly distributed and extend into the inside of the base system 1, and the main motor system 2 and the base system 1 are connected through the set screws and the motor mounting frame.

[0028] Please refer to Figs. 1-3 The top of the secondary exhaust manifold 48 is fixedly connected with two connecting flanges 49, the connecting flanges 49 are used for being connected to the matched flanges of the exhaust of the main motor system 2, then combined into the secondary exhaust manifold 48, and then enter the cooler system 3 through the secondary cooling pipeline 31.

[0029] The outside of the main motor system 2 is provided with a control panel, the base system 1, the main motor system 2 and the cooler system 3 are electrically connected with the control panel, the control panel is used for controlling the operation of the base system 1, the main motor system 2 and the cooler system 3, and unified management of the power equipment is realized, the four systems are uniformly accessed and controlled through the control panel, and it is convenient to add other power equipment in each system.

[0030] Please refer to Figs. 1-3 The secondary cooling pipeline 31, the secondary exhaust manifold 48 and the connecting flange 49 form a whole secondary exhaust-to-cooler mechanism, the secondary exhaust-to-cooler mechanism is divided into three sections through the above three devices, and the outside of the connecting position of each two devices is provided with a protective sleeve, and the protective sleeve is used for reducing the collision between the secondary cooling pipeline 31 and other devices.

[0031] Please refer to Figs. 1-3 The working principle of the present application is as follows: The application is provided with a base system 1, a main engine system 2 and a cooler system 3, when in use, the above four systems of the base system 1, the main engine system 2, the cooler system 3 and the inter-stage bypass system are uniformly accessed and controlled by a control panel, other power equipment can be conveniently added in each system, the base system 1 is a skid-mounted base of the whole set of equipment, the cooler system 3 is used for cooling the compressed gas and lubricating oil at each stage, all pipelines are not embodied in the application, the inter-stage bypass system 4 is the main improvement point of the application, the connecting flange 49 is used for being connected to the matched flange of the exhaust of the main engine system 2, then combined into the second-stage exhaust manifold 48, and then enters the cooler system 3 through the second-stage cooling pipeline 31, the control panel is used for controlling the operation of the base system 1, the main engine system 2 and the cooler system 3, realizing unified management of the power equipment, the motor mounting frame is internally screwed with the locating screws which are equidistantly distributed and extend into the base system 1, the main engine system 2 and the base system 1 are connected through the locating screws and the motor mounting frame, the second-stage cooling pipeline 31, the second-stage exhaust manifold 48 and the connecting flange 49 form the whole second-stage exhaust to cooler mechanism, the second-stage exhaust to cooler mechanism is divided into three sections through the above three devices, a protective sleeve is mounted on the outside of the connection between each two devices, the protective sleeve is used for reducing the collision between the second-stage cooling pipeline 31 and other devices, the spiral cooling fins 44 are used for increasing the heat dissipation area and even effectively reducing the temperature of the gas before entering the manifold, the two ends of the spiral cooling fins 44 are pressed through the hose clamp 43 or spot-welded, the whole bypass system is produced and installed as simply and conveniently as possible, one end of the second-stage cooling pipeline 31 is connected with the profile bracket, the bottoms of the two pipe clamps 47 are connected with the profile bracket, the tops of the pipe clamps 47 are all mounted with the upper cover plates, and the tops of the upper cover plates are all screwed with the symmetrically distributed bolts.

[0032] In actual use, the straight-through joint 41 is connected to the cylinder of the piston main engine before four-stage compression, the stainless steel sleeve pipe 42 is connected with the straight-through joint 41, the whole stainless steel sleeve pipe 42 is divided into two sections and connected through the elbow joint 45, other elbows can be bent through a pipe bending machine, and finally connected to the second-stage cooling pipeline 31 of the upper stage through the threaded joint 46, so that if the temperature of the gas entering the last-stage four-stage compression is too high, the gas can enter the manifold after the second-stage compression through the bypass system, that is, the second-stage cooling pipeline 31, and then enter the cooler, meanwhile, the spiral cooling fins 44 are mounted on the stainless steel sleeve pipe 42 to increase the heat dissipation area and even effectively reduce the temperature of the gas before entering the manifold, the two ends of the spiral cooling fins 44 are pressed through the hose clamp 43 or spot-welded, and the whole bypass system is produced and installed as simply and conveniently as possible. Finally, the pipe clamp 47 is fixed to the profile support of the cooler system 3, and the specific operation is that the bottom plate of the pipe clamp 47 is welded with the support, then the stainless steel sleeve pipe 42 is pressed tightly, finally the upper cover plate of the pipe clamp 47 and the bolt are tightened, and the complete installation is completed; Since each stage of compression of the present piston main machine is divided into two paths, the design of the inter-stage bypass system is also divided into two paths, i.e., the first inter-stage bypass 11 and the second inter-stage bypass 12, but the principles are the same.

[0033] The present patent aims at an inter-stage bypass system of a high-pressure piston compressor, which adjusts the high-temperature alarm shutdown problem in the whole equipment operation process by adding an inter-stage bypass system before the last stage high-pressure compression, and simultaneously does not need to adjust the size of other systems, does not reduce the system operation efficiency, and does not reduce the service life of the equipment, etc. The technical scheme of the present application compared with the prior art: by adding an inter-stage pipeline before the last stage compression, the shutdown problem caused by gas over-temperature in the whole equipment operation process is effectively solved. The technical scheme of the present application compared with the prior art: does not increase the low-pressure stage compression temperature, avoids the reduction of the equipment operation life, the increase of spare part cost, etc. The technical scheme of the present application compared with the prior art: does not increase the design size of the cooling system, and increases the cooling load. The technical scheme of the present application compared with the prior art: does not reduce the processing capacity of the equipment itself, and avoids the waste of gas volume.

[0034] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An inter-stage bypass system of a high-pressure piston compressor, comprising a base system (1), characterized in that: a main motor system (2) is mounted on the top of the base system (1); a cooler system (3) is mounted on the top of the base system (1) and on one side of the main motor system (2); and an inter-stage bypass system (4) is mounted inside the cooler system (3) and on the top of the base system (1). The inter-stage bypass system (4) comprises a first inter-stage bypass (11), and a second inter-stage bypass (12) is mounted on one side of the first inter-stage bypass (11). One side of the first inter-stage bypass (11) is provided with a two-stage exhaust manifold (48), and one end of the first inter-stage bypass (11) and the second inter-stage bypass (12) is provided with a straight-through joint (41). The outer side of the straight-through joint (41) is sleeved with a stainless steel sleeve pipe (42), and the other end of the stainless steel sleeve pipe (42) is connected with the two-stage exhaust manifold (48). One side of the two-stage exhaust manifold (48) is provided with a two-stage cooling pipeline (31). The outer side of one end of the other stainless steel sleeve pipe (42) is provided with two pipe clamps (47), one end of the other stainless steel sleeve pipe (42) penetrates one of the pipe clamps (47) and is provided with a threaded joint (46), and one end of the threaded joint (46) is connected with the two-stage cooling pipeline (31). The top of the base system (1) is fixedly connected with a fixed frame at the bottom of the cooler system (3), the outer side of the fixed frame is fixedly connected with a profile support, the outer sides of the first inter-stage bypass (11) and the second inter-stage bypass (12) are fixedly connected with equidistantly distributed spiral cooling fins (44), and the two ends of the spiral cooling fins (44) are provided with a hose clamp (43). The spiral cooling fins (44) are used to increase the heat dissipation area.

2. The inter-stage bypass system of a high-pressure piston compressor according to claim 1, characterized in that One end of the two-stage cooling pipeline (31) is connected with the profile support, the bottoms of the two pipe clamps (47) are connected with the profile support, the tops of the pipe clamps (47) are provided with an upper cover plate, and the tops of the upper cover plates are threadedly connected with symmetrically distributed bolts.

3. The inter-stage bypass system of a high-pressure piston compressor according to claim 2, characterized in that: A bend-through joint (45) is mounted between the stainless steel sleeve pipe (42) and the two-stage exhaust manifold (48), a conveying pipeline is mounted in the other pipe clamp (47), one end of the conveying pipeline is connected with the threaded joint (46), and the other end of the conveying pipeline is connected with the two-stage exhaust manifold (48).

4. The inter-stage bypass system of a high-pressure piston compressor according to claim 2, characterized in that: The base system (1) is a skid-mounted base of the entire set of equipment, and the cooler system (3) is used for cooling the compressed gas and lubricating oil of each stage.

5. The inter-stage bypass system of a high-pressure piston compressor according to claim 1, characterized in that: The main motor system (2) comprises a piston compression main machine, a shaft coupling, a shaft coupling cover and a main motor. The top of the base system (1) is provided with the shaft coupling cover on one side of the inter-stage bypass system (4), the shaft coupling cover is provided with the shaft coupling inside, the shaft coupling cover is provided with the main motor on one side, the output end of the main motor is connected with the shaft coupling, the outer side of the piston compression main machine is provided with a cylinder, and the output end of the cylinder is connected with the straight-through joint (41).

6. The inter-stage bypass system of a high-pressure piston compressor according to claim 2, characterized in that: ​ 7. The inter-stage bypass system of a high-pressure piston compressor according to claim 6, characterized in that The bottom of the main motor is provided with a motor mounting rack, and the inside of the motor mounting rack is threadedly connected with tight screws which are equidistantly distributed and extend into the inside of the base system (1).

8. The inter-stage bypass system of a high-pressure piston compressor according to claim 5, characterized in that: The top of the secondary exhaust manifold (48) is fixedly connected with two connecting flanges (49), which are used for being connected to the matched flanges of the main motor system (2) exhaust.

9. The inter-stage bypass system of a high-pressure piston compressor according to claim 8, characterized in that: The secondary cooling pipeline (31), the secondary exhaust manifold (48) and the connecting flange (49) constitute the whole secondary exhaust-to-cooler mechanism, which is divided into three sections, and the outside of the connecting position of each two sections is provided with a protective sleeve, which is used for reducing the collision between the secondary cooling pipeline (31) and other equipment.

10. The inter-stage bypass system of a high-pressure piston compressor according to claim 8, characterized in that: The outside of the main motor system (2) is provided with a control panel, and the base system (1), the main motor system (2) and the cooler system (3) are electrically connected with the control panel, which is used for controlling the operation of the base system (1), the main motor system (2) and the cooler system (3), so that the unified management of the power equipment is realized.

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