A reciprocating mixed compression unit for oil and gas fields

Abstract

The application discloses a kind of oil and gas field with booster gas lift reciprocating mixed transport compressor unit, it is related to natural gas mining technical field, including compressor assembly, the compressor assembly is by for realizing booster and gas lift multistage compressor and with multistage compressor transmission connection natural gas engine is composed, the fuel input end of the natural gas engine is connected with fuel storage component, the input end of the fuel storage component is connected with shell component;The top of the shell component is provided with air intake drive unit, the outside transmission of the air intake drive unit is provided with transposition mechanism.The application can periodically realize the active transposition of wet natural gas drying unit, without manual, to realize the uninterrupted continuous drying treatment of wet natural gas, while in the switching process of wet natural gas drying unit, natural gas will not enter the working environment, to avoid waste while reducing security risks.

Description

Technical Field

[0001] This invention relates to the field of natural gas extraction technology, and in particular to a booster gas lift reciprocating mixed-transmission compressor unit for oil and gas fields. Background Technology

[0002] The booster gas lift reciprocating mixed transmission compressor unit is used for boosting and gas lift operations during natural gas extraction. Currently, most booster gas lift reciprocating mixed transmission compressor units on the market are driven by electric motors. Therefore, for abandoned wells and some remote edge wells, since there is often no supporting power grid in the surrounding area, and the electric motor drives the compressor to consume a lot of electricity, it is necessary to purchase a large generator set separately, which leads to excessively high extraction costs.

[0003] To avoid the above situation, those skilled in the art have thought of directly installing a natural gas engine that uses natural gas as fuel in the compressor unit to drive the compressor, so as to reduce power consumption and enable the compressor unit to operate using only its own small generator. However, since the extracted natural gas contains a large amount of moisture, it cannot be used directly as fuel. Therefore, the unit needs to be equipped with corresponding wet natural gas drying equipment to dry the wet natural gas.

[0004] As disclosed in the invention patent with authorization announcement number CN115350570B, a wet natural gas drying device for natural gas liquefaction pretreatment is provided. The purpose is to provide a wet natural gas drying device for natural gas liquefaction pretreatment that can remove a large amount of moisture and droplets in natural gas in advance. It includes a base plate, a switching plate and a separation box. The switching plate is slidably connected to the top of the base plate, and the separation box is connected to both sides of the top of the switching plate.

[0005] When the aforementioned drying equipment regenerates the molecular sieve in the left separation chamber, it can separate the moisture in the natural gas through the molecular sieve in the right separation chamber for drying, thus ensuring processing efficiency. However, in actual application, when switching between the two separation chambers, it is necessary to actively close the vent valve on the inlet pipe and then start the geared motor to switch positions. During this process, because the vent valve is closed, the equipment cannot input natural gas normally, and the entire equipment is in a shutdown state, which is not conducive to the uninterrupted and continuous drying of wet natural gas. At the same time, during the switching process, the natural gas remaining in the left separation chamber will enter the working environment, which not only causes waste but also increases the safety hazards in the working environment.

[0006] In addition, to avoid the baking machine being directly installed inside the separation box and causing moisture in the natural gas to corrode the baking machine, the baking machine used for molecular sieve reduction can only be installed outside the separation box. This means that during the molecular sieve reduction process, heat can only be transferred through the separation box, which not only affects the reduction efficiency of the molecular sieve, but also causes the separation box to heat up, which can easily lead to burns to the staff.

[0007] Therefore, it is necessary to invent a booster air lift reciprocating mixed-transport compressor unit for oil and gas fields to solve the above problems. Summary of the Invention

[0008] The purpose of this invention is to provide a booster gas lift reciprocating mixing compressor unit for oil and gas fields, which can periodically and actively switch the wet natural gas drying unit without manual intervention, thereby achieving uninterrupted and continuous drying of wet natural gas. During the switching process, natural gas will not enter the working environment, avoiding waste and reducing safety hazards. Furthermore, it avoids direct contact with wet natural gas, preventing corrosion, and allows for direct heating of the arc-shaped molecular sieve filling frame, improving the reduction efficiency of the molecular sieve while preventing external structural heating. This addresses the problem in the background art where, when switching between the two separation tanks, the vent valve on the inlet pipe needs to be actively closed before starting the geared motor for switching. During this process, because the vent valve is closed, the equipment cannot input natural gas normally, and the entire equipment is in a shutdown state, which is not conducive to uninterrupted and continuous drying of wet natural gas. Additionally, during the switching process, residual natural gas in the left separation tank will enter the working environment, causing waste and increasing safety hazards in the working environment.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a booster gas lift reciprocating mixed-transport compressor unit for oil and gas fields, comprising a compressor assembly, wherein the compressor assembly consists of a multi-stage compressor for realizing boosting and gas lift and a natural gas engine that is drivenly connected to the multi-stage compressor, wherein the fuel input end of the natural gas engine is connected to a fuel storage assembly, and the input end of the fuel storage assembly is connected to a housing assembly.

[0010] An air intake drive unit is provided on the top of the housing assembly. A shifting mechanism is provided on the outside of the air intake drive unit. A wet natural gas drying unit for drying wet natural gas is rotatably provided inside the housing assembly. An inner and outer sealing assembly that divides the inner cavity of the housing assembly into left and right chambers is provided inside and outside the wet natural gas drying unit. A heating reduction assembly for heating and reducing adjacent molecular sieves is provided inside the housing assembly and inside the inner and outer sealing assemblies.

[0011] Preferably, the housing assembly includes a base, an outer shell is fixedly disposed on the top of the base, an output pipe connected to a fuel storage assembly is fixedly disposed through the bottom right side of the outer shell, the output pipe communicates with the right chamber inside the base, and a waste discharge pipe is fixedly disposed through the top left side of the outer shell, the waste discharge pipe communicates with the left chamber inside the base.

[0012] Preferably, the air intake drive unit includes an air intake pipe A, the bottom end of which is fixedly connected to a sealing cover fixedly installed on the top of the base, the bottom of which is fixedly connected to an air intake pipe B, which passes through the top of the base and extends to the inside of a fixed channel and is fixedly connected to the inner wall of the fixed channel, an impeller is provided inside the sealing cover, and a reciprocating screw is fixedly provided at the bottom of the impeller, the reciprocating screw passes through the inner wall of the air intake pipe B and extends downward and is rotatably connected to the air intake pipe B and the rotating seat through a bearing, and a drive groove is provided on the side of the reciprocating screw.

[0013] Preferably, the shifting mechanism includes a lifting plate sleeved on the outside of a reciprocating screw, a guide slider fixedly mounted on the side of the lifting plate and slidably mounted on the inside of a guide groove in a vertical direction, a plurality of sliding shafts slidably passing through the bottom of the guide slider, an annular plate fixedly mounted at the bottom of the plurality of sliding shafts, a return spring sleeved on the outside of each of the plurality of sliding shafts, the return springs being fixedly connected between the lifting plate and the annular plate, a rotating disk rotatably mounted on the bottom of the annular plate via a bearing, a drive slider fixedly mounted on the inside of the rotating disk and slidably mounted on the inside of a drive groove in a vertical direction, and a movable lever fixedly mounted on the bottom of the rotating disk.

[0014] Preferably, the wet natural gas drying unit includes a rotating seat nested on the top of the base via a bearing, a fixed block is fixedly provided on the top of the rotating seat, an installation cylinder is fixedly provided on the outer side of the top of the rotating seat, and an arc-shaped molecular sieve filling mesh frame is fixedly nested on both sides of the installation cylinder.

[0015] Preferably, the inner and outer sealing assembly includes an inner sealing column rotatably disposed inside the mounting cylinder and fixedly connected to the inner wall of the base. The inner sealing column has a guide groove on its inner side. The left and right sides of the inner sealing column are respectively provided with an installation cavity and a gas receiving cavity. A fixed channel is provided through the top of the inner side of the gas receiving cavity.

[0016] Preferably, the inner and outer sealing assembly further includes two outer sealing blocks, which are slidably attached to the front and rear sides of the mounting cylinder and are fixedly connected to the inner wall of the base. Sealing elements are provided between the inner sealing column and the inner wall of the mounting cylinder, and between the outer sealing blocks and the outer wall of the mounting cylinder.

[0017] Preferably, the heating and reduction assembly includes two sets of heating units located on the inner and outer sides of adjacent arc-shaped molecular sieve filling frames, respectively. Each set of heating units includes a fixing seat and multiple heating resistors fixedly disposed on the side of the fixing seat. One fixing seat is fixedly disposed inside the mounting cavity, and the other fixing seat is fixedly disposed inside the left side of the base.

[0018] The technical effects and advantages of this invention are as follows:

[0019] This invention incorporates an intake drive unit, a switching mechanism, a wet natural gas drying unit, and inner and outer sealing components. The intake drive unit drives the input of wet natural gas into the inner and outer sealing components, whereby the wet natural gas drying unit removes water. During this process, the gas formed from the wet natural gas continuously drives the switching mechanism via the intake drive unit. The switching mechanism, under continuous drive, periodically rotates and switches the wet natural gas drying unit, enabling molecular sieve reduction without shutdown. Simultaneously, the inner and outer sealing components work with the wet natural gas drying unit to divide the interior of the housing assembly into left and right chambers, allowing the heating reduction component to be directly installed inside the housing assembly and the inner and outer sealing components. Compared to existing technologies, this invention can periodically and actively switch the wet natural gas drying unit without manual intervention, achieving uninterrupted and continuous drying of wet natural gas. Furthermore, during the switching process, natural gas does not enter the working environment, avoiding waste and reducing safety hazards. It also prevents direct contact with wet natural gas from causing corrosion and allows for direct heating of the arc-shaped molecular sieve filling frame, improving the reduction efficiency of the molecular sieve while preventing external structural heating. Attached Figure Description

[0020] Figure 1 This is a top view of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the housing assembly structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the outer shell of the present invention;

[0023] Figure 4 This is a schematic diagram of the intake drive unit structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the transposition mechanism of the present invention;

[0025] Figure 6 This is a schematic diagram of the wet natural gas drying unit structure of the present invention;

[0026] Figure 7 This is a schematic diagram of the internal and external sealing assembly and the heating and reduction assembly of the present invention;

[0027] Figure 8 This is the logic diagram of the multi-stage compressor of the present invention.

[0028] In the diagram: 1. Compressor assembly; 2. Fuel storage assembly; 3. Housing assembly; 31. Base; 32. Housing; 33. Output pipe; 34. Exhaust pipe; 4. Intake drive unit; 41. Intake pipe A; 42. Sealing cover; 43. Intake pipe B; 44. Impeller; 45. Reciprocating screw; 46. Drive slide; 5. Switching mechanism; 51. Lifting plate; 52. Guide slider; 53. Sliding shaft; 54. Annular plate; 55. Return spring 56. Spring; 57. Rotary disk; 58. Drive slider; 59. Moving block; 60. Wet natural gas drying unit; 61. Rotary seat; 62. Fixed block; 63. Mounting cylinder; 64. Arc-shaped molecular sieve filling frame; 75. Inner and outer sealing components; 71. Inner sealing column; 72. Guide groove; 73. Mounting cavity; 74. Gas containing cavity; 75. Fixed channel; 76. Outer sealing block; 87. Heating and reduction components; 81. Fixed seat; 82. Heating resistor. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] This invention provides, for example Figures 1-7 The illustrated oil and gas field booster gas lift reciprocating mixed-transport compressor unit includes a compressor assembly 1, which consists of a multi-stage compressor for boosting and gas lift and a natural gas engine connected to the multi-stage compressor. The fuel input end of the natural gas engine is connected to a fuel storage assembly 2, and the input end of the fuel storage assembly 2 is connected to a housing assembly 3. An intake drive unit 4 is provided on the top of the housing assembly 3, and a shifting mechanism 5 is driven on the outside of the intake drive unit 4. A wet natural gas drying unit 6 for drying wet natural gas is rotatably provided inside the housing assembly 3. An inner and outer sealing assembly 7 is provided inside and outside the wet natural gas drying unit 6 to divide the inner cavity of the housing assembly 3 into left and right chambers. A heating and reduction assembly 8 for heating and reducing adjacent molecular sieves is provided inside the housing assembly 3 and inside the inner and outer sealing assembly 7.

[0031] It should be noted that both the compressor assembly 1 and the fuel storage assembly 2 are existing publicly disclosed technologies, therefore, this application will not elaborate on the specific structures of the compressor assembly 1 and the fuel storage assembly 2.

[0032] like Figure 2 and Figure 3As shown, the housing assembly 3 includes a base 31, an outer shell 32 is fixedly installed on the top of the base 31, an output pipe 33 connected to the fuel storage assembly 2 is fixedly installed through the bottom right side of the outer shell 32, the output pipe 33 communicates with the right chamber inside the base 31, and a waste discharge pipe 34 is fixedly installed through the top left side of the outer shell 32, the waste discharge pipe 34 communicates with the left chamber inside the base 31.

[0033] like Figure 4 As shown, the intake drive unit 4 includes an intake pipe A41. The bottom end of the intake pipe A41 is fixedly connected to a sealing cover 42 fixedly installed on the top of the base 31. The bottom of the sealing cover 42 is fixedly connected to an intake pipe B43. The intake pipe B43 passes through the top of the base 31 and extends to the inside of the fixed channel 75 and is fixedly connected to the inner wall of the fixed channel 75. An impeller 44 is provided inside the sealing cover 42. A reciprocating screw 45 is fixedly installed at the bottom of the impeller 44. The reciprocating screw 45 passes through the inner wall of the intake pipe B43 and extends downward and is rotatably connected to the intake pipe B43 and the rotating seat 61 through a bearing. A drive groove 46 is provided on the side of the reciprocating screw 45.

[0034] By setting up the aforementioned housing assembly 3 and the air intake drive unit 4, the wet natural gas in the gas well can enter the interior of the sealing cover 42 through the air intake pipe A41, and then enter the interior of the gas receiving chamber 74 through the air intake pipe B43. At this time, the mounting cylinder 63, the inner sealing column 71 and the outer sealing block 76 cooperate to allow the wet natural gas to pass through the adjacent arc-shaped molecular sieve filling mesh frame 64 and enter the right chamber of the base 31. During this process, the wet natural gas is dehydrated by the molecular sieve, and then input into the fuel storage assembly 2 for storage through the output pipe 33. The fuel storage assembly 2 then provides fuel for the natural gas engine in the compressor assembly 1, enabling the natural gas engine to drive the multi-stage compressor.

[0035] like Figure 5 As shown, the shifting mechanism 5 includes a lifting plate 51 that is sleeved on the outside of the reciprocating screw 45. A guide slider 52 that slides vertically inside the guide groove 72 is fixedly mounted on the side of the lifting plate 51. Multiple sliding shafts 53 are slidably mounted through the bottom of the guide slider 52. An annular plate 54 is fixedly mounted at the bottom of the multiple sliding shafts 53. A return spring 55 is sleeved on the outside of each of the multiple sliding shafts 53. The return spring 55 is fixedly connected between the lifting plate 51 and the annular plate 54. A rotating plate 56 is rotatably mounted on the bottom of the annular plate 54 through a bearing. A drive slider 57 that slides vertically inside the drive groove 46 is fixedly mounted on the inside of the rotating plate 56. A movable toggle block 58 is fixedly mounted on the bottom of the rotating plate 56.

[0036] By setting up the aforementioned intake drive unit 4 and switching mechanism 5, the impeller 44 is continuously rotated when the wet natural gas passes through the sealing cover 42. When the impeller 44 rotates, it drives the reciprocating screw 45 to rotate synchronously. When the reciprocating screw 45 rotates, it drives the lifting plate 51, which is guided by the guide slider 52 and the guide groove 72, to move continuously downward. At the same time, the rotating plate 56 is continuously rotated by the drive groove 46 and the drive slider 57. When the rotating plate 56 rotates, it drives the movable block 58 at its bottom to rotate synchronously. When the lifting plate 51 moves downward, the annular plate 54 moves downward by the return spring 55. When the annular plate 54 moves downward, it drives the rotating plate 56 to move downward synchronously along the outer wall of the reciprocating screw 45. When the rotating plate 56 moves downward, it drives the drive slider 57 to descend synchronously along the drive groove 46. During this process, the rotating plate 56 continues to rotate.

[0037] like Figure 6 As shown, the wet natural gas drying unit 6 includes a rotating seat 61 that is rotatably nested on the top of the base 31 via a bearing. A fixed block 62 is fixedly installed on the top of the rotating seat 61, and an installation cylinder 63 is fixedly installed on the outer side of the top of the rotating seat 61. An arc-shaped molecular sieve filling mesh frame 64 is fixedly nested on both sides of the installation cylinder 63.

[0038] By setting the above structure, after the movable block 58 pushes the fixed block 62 from the side, the fixed block 62 drives the rotating seat 61 to rotate. When the rotating seat 61 rotates, it drives the two arc-shaped molecular sieve filling frames 64 to rotate synchronously, so as to complete the switching of the two arc-shaped molecular sieve filling frames 64. The unused or restored arc-shaped molecular sieve filling frames 64 are located on the right side, and the arc-shaped molecular sieve filling frames 64 to be restored are located on the left side. This ensures the normal operation of dehydration of wet natural gas, and at the same time, it allows for the heating and restoration of the used molecular sieve.

[0039] like Figure 7 As shown, the inner and outer sealing assembly 7 includes an inner sealing column 71 rotatably disposed inside the mounting cylinder 63 and fixedly connected to the inner wall of the base 31. A guide groove 72 is provided on the inner side of the inner sealing column 71. An mounting cavity 73 and a gas receiving cavity 74 are respectively provided on the left and right sides of the inner sealing column 71. A fixed channel 75 is provided through the top of the inner side of the gas receiving cavity 74. The inner and outer sealing assembly 7 also includes two outer sealing blocks 76. The two outer sealing blocks 76 are slidably attached to the front and rear sides of the mounting cylinder 63 and are fixedly connected to the inner wall of the base 31. Sealing elements are provided between the inner sealing column 71 and the inner wall of the mounting cylinder 63, and between the outer sealing blocks 76 and the outer wall of the mounting cylinder 63.

[0040] By setting up the above structure, the mounting cylinder 63, the inner sealing column 71 and the outer sealing block 76 can cooperate with each other, thereby dividing the inner cavity of the base 31 into left and right chambers. At the same time, it ensures that the mounting cylinder 63 can rotate normally between the inner sealing column 71 and the mounting cavity 73, thereby preventing natural gas from the right chamber from entering the left chamber, providing conditions for the installation of the heating and reduction assembly 8, and not affecting the repositioning of the wet natural gas drying unit 6.

[0041] like Figure 7 As shown, the heating and reduction assembly 8 includes two sets of heating units located inside and outside the adjacent arc-shaped molecular sieve filling mesh frame 64, respectively. Each set of heating units includes a fixing seat 81 and multiple heating resistors 82 fixedly disposed on the side of the fixing seat 81. One fixing seat 81 is fixedly disposed inside the mounting cavity 73, and the other fixing seat 81 is fixedly disposed inside the left side of the base 31.

[0042] By setting up the above structure, after the two arc-shaped molecular sieve filling frames 64 have completed their interchange, the unused arc-shaped molecular sieve filling frames 64 rotate to a position adjacent to the gas containing chamber 74 to continue removing water from the wet natural gas. The used arc-shaped molecular sieve filling frames 64 rotate to the space between the two sets of heating units and are then heated and reduced by multiple heating resistors 82 located on their inner and outer sides. The reason for the placement of the two sets of heating units is that they can avoid direct contact with wet natural gas and thus prevent erosion, while also allowing direct heating of the arc-shaped molecular sieve filling frames 64 to improve the reduction efficiency of the molecular sieve and prevent the external structure from heating up. The waste gas generated in this process is discharged through the waste discharge pipe 34.

[0043] This invention also includes a method for using a booster gas lift reciprocating mixed-transport compressor unit for oil and gas fields, the method specifically including the following steps:

[0044] S1. The wet natural gas in the gas well enters the sealed cover 42 through the inlet pipe A41, and then enters the gas receiving chamber 74 through the inlet pipe B43. At this time, the mounting cylinder 63, the inner sealing column 71 and the outer sealing block 76 cooperate to allow the wet natural gas to pass through the adjacent arc-shaped molecular sieve filling frame 64 and enter the right chamber of the base 31. During this process, the wet natural gas is dehydrated by the molecular sieve and then enters the fuel storage assembly 2 through the output pipe 33 for storage. The fuel storage assembly 2 provides fuel for the natural gas engine in the compressor assembly 1, so that the natural gas engine drives the multi-stage compressor.

[0045] S2. When wet natural gas passes through the sealing cover 42, it drives the impeller 44 to rotate continuously. When the impeller 44 rotates, it drives the reciprocating screw 45 to rotate synchronously. When the reciprocating screw 45 rotates, it drives the lifting plate 51, which is guided by the guide slider 52 and the guide groove 72, to move continuously downward. At the same time, it drives the rotating plate 56 to rotate continuously through the drive groove 46 and the drive slider 57. When the rotating plate 56 rotates, it drives the moving block 58 at its bottom to rotate synchronously.

[0046] S3. When the lifting plate 51 moves down, the return spring 55 drives the annular plate 54 to move down. When the annular plate 54 moves down, it drives the rotating plate 56 to move down synchronously along the outer wall of the reciprocating screw 45. When the rotating plate 56 moves down, it drives the drive slider 57 to descend synchronously along the drive groove 46. During this process, the rotating plate 56 continues to rotate.

[0047] S4. As the lifting plate 51 continues to move down, the lifting plate 51 gradually moves to the bottom of the reciprocating thread on the outer side of the lifting plate 51. At this time, the moving block 58 pushes the fixed block 62 from the side of the fixed block 62, thereby causing the fixed block 62 to drive the rotating seat 61 to rotate. When the rotating seat 61 rotates, it drives the two arc-shaped molecular sieve filling mesh frames 64 to rotate synchronously.

[0048] S5. After the lifting plate 51 moves to the bottom of the reciprocating thread on the outside of the lifting plate 51 and moves up to reset, the two arc-shaped molecular sieve filling frames 64 complete the exchange. At the same time, the moving block 58 no longer contacts the fixed block 62. Subsequently, as the reciprocating screw 45 continues to rotate, the lifting plate 51 moves up to reset.

[0049] S6. After the two arc-shaped molecular sieve filling frames 64 have completed their interchange, the unused arc-shaped molecular sieve filling frames 64 rotate to a position adjacent to the gas containing chamber 74 to continue to remove water from the wet natural gas. The used arc-shaped molecular sieve filling frames 64 rotate to the space between the two sets of heating units and are then heated and reduced by multiple heating resistors 82 located on their inner and outer sides. The waste gas generated in this process is discharged through the waste discharge pipe 34.

[0050] S7. After the lifting plate 51 moves to the top of the reciprocating thread on the outer side of the lifting plate 51, the lifting plate 51 moves down again as the reciprocating screw 45 continues to rotate.

[0051] It should also be noted that, such as Figure 8 As shown, the multi-stage compressor includes two inlet ends and multiple outlet ends. A main separation buffer is provided between the inlet and outlet ends. The main separation buffer divides the wellhead gas source into multiple paths. Each path is equipped with one or more sets of cylinders and separation buffers. The exhaust pipe of each path is connected to different outlet ends or two sets are combined to one outlet end. Solenoid valves are provided on the pipes to control the gas flow direction and pressure so that the compressor can output different pressures at the same time.

[0052] It should also be noted that the main separation buffer splits the wellhead gas source into two paths. One path is equipped with a No. 1 cylinder and a first-stage separation buffer, which are connected in series via a pipeline. The other path is equipped with a No. 2 cylinder and a second-stage separation buffer, which are connected in series via a pipeline. The outlets of the first-stage and second-stage separation buffers are connected via a pipeline, and an electric valve actuator is installed on the connecting pipeline. The pipelines of the outlets of the first-stage and second-stage separation buffers are both connected to the first outlet end. A valve is installed on the pipeline between the first-stage separation buffer and the first outlet end.

[0053] The pipe connected to the outlet of the secondary separation buffer is connected to the No. 3 cylinder and the third-stage separation buffer. The No. 3 cylinder and the third-stage separation buffer are connected in series. The pipe connected to the inlet of the No. 3 cylinder is connected to a valve. The outlet of the third-stage separation buffer is connected to the second outlet through a pipe.

[0054] The first-stage separation buffer has two air outlets. One air outlet is connected to the first air outlet through a pipe, and the other air outlet is connected to the air inlet of the second cylinder through a pipe. Solenoid valves are installed on both sets of pipes.

[0055] The air inlet of cylinder No. 3 is connected to the air outlet of the main separator buffer via a pipeline, and a solenoid valve is installed on the pipeline.

[0056] Valves are connected to the pipes connecting the outlets of the primary, secondary, and tertiary separation buffers to the vent main.

[0057] A filter is installed on the pipe connecting the air intake end to the main separator buffer;

[0058] Air coolers are installed on the pipes between the cylinder and the separation buffer;

[0059] The non-gas outlets of the main separation buffer and the branch separation buffers are all connected to the main sewage pipe through pipes equipped with solenoid valves. The non-gas outlet of the filter is also connected to the main sewage pipe through pipes equipped with solenoid valves.

[0060] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A booster-gas-lift reciprocating hybrid compressor unit for oil and gas fields, comprising a compressor assembly, said compressor assembly consisting of a multi-stage compressor for achieving boosting and gas lift, and a natural gas engine driven by the multi-stage compressor, characterized in that: The fuel input end of the natural gas engine is connected to a fuel storage assembly, and the input end of the fuel storage assembly is connected to a housing assembly. An air intake drive unit is provided on the top of the housing assembly. A shifting mechanism is provided on the outside of the air intake drive unit. A wet natural gas drying unit for drying wet natural gas is rotatably provided inside the housing assembly. An inner and outer sealing assembly that divides the inner cavity of the housing assembly into left and right chambers is provided inside and outside the wet natural gas drying unit. A heating reduction assembly for heating and reducing adjacent molecular sieves is provided inside the housing assembly and inside the inner and outer sealing assembly. The air intake drive unit includes an air intake pipe A. The bottom end of the air intake pipe A is fixedly connected to a sealing cover fixedly installed on the top of the base. The bottom of the sealing cover is fixedly connected to an air intake pipe B. The air intake pipe B passes through the top of the base and extends to the inside of the fixed channel and is fixedly connected to the inner wall of the fixed channel. An impeller is provided inside the sealing cover. A reciprocating screw is fixedly installed at the bottom of the impeller. The reciprocating screw passes through the inner wall of the air intake pipe B and extends downward and is rotatably connected to the air intake pipe B and the rotating seat through a bearing. A drive groove is provided on the side of the reciprocating screw. The shifting mechanism includes a lifting plate sleeved on the outside of a reciprocating screw. A guide slider is fixedly mounted on the side of the lifting plate and slidably mounted on the inside of a guide groove in a vertical direction. Multiple sliding shafts are slidably mounted through the bottom of the guide slider. An annular plate is fixedly mounted at the bottom of the multiple sliding shafts. A return spring is sleeved on the outside of each of the multiple sliding shafts. The return spring is fixedly connected between the lifting plate and the annular plate. A rotating plate is rotatably mounted on the bottom of the annular plate through a bearing. A drive slider is fixedly mounted on the inside of the rotating plate and slidably mounted on the inside of a drive groove in a vertical direction. A movable lever is fixedly mounted on the bottom of the rotating plate. The wet natural gas drying unit includes a rotating seat that is rotatably nested on the top of the base via a bearing. A fixed block is fixedly installed on the top of the rotating seat, and an installation cylinder is fixedly installed on the outer side of the top of the rotating seat. Arc-shaped molecular sieve filling mesh frames are fixedly nested on both sides of the installation cylinder. The inner and outer sealing assembly includes an inner sealing column rotatably disposed inside the mounting cylinder and fixedly connected to the inner wall of the base. A guide groove is provided on the inner side of the inner sealing column. An installation cavity and a gas receiving cavity are respectively provided on the left and right sides of the inner sealing column. A fixed channel is provided through the top of the inner side of the gas receiving cavity. The inner and outer sealing assembly also includes two outer sealing blocks. The two outer sealing blocks are slidably attached to the front and rear sides of the mounting cylinder and are fixedly connected to the inner wall of the base. Sealing elements are provided between the inner sealing column and the inner wall of the mounting cylinder, and between the outer sealing blocks and the outer wall of the mounting cylinder.

2. The booster gas lift reciprocating mixed-transport compressor unit for oil and gas fields according to claim 1, characterized in that: The housing assembly includes a base, an outer shell is fixedly mounted on the top of the base, an output pipe connected to a fuel storage assembly is fixedly installed through the bottom right side of the outer shell, the output pipe communicates with the right chamber inside the base, and a waste discharge pipe is fixedly installed through the top left side of the outer shell, the waste discharge pipe communicates with the left chamber inside the base.

3. The booster gas lift reciprocating mixed-transport compressor unit for oil and gas fields according to claim 2, characterized in that: The heating and reduction assembly includes two sets of heating units located on the inner and outer sides of adjacent arc-shaped molecular sieve filling frames, respectively. Each set of heating units includes a fixed base and multiple heating resistors fixedly disposed on the side of the fixed base. One fixed base is fixedly disposed inside the mounting cavity, and the other fixed base is fixedly disposed inside the left side of the base.

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