Associated gas air cooling device and working method

Abstract

The associated gas air cooling device comprises a finned tube box, a left tube box and a right tube box are arranged on the left side wall and the right side wall of the finned tube box correspondingly, the left tube box and the right tube box are each divided into an upper cavity, a middle cavity and a lower cavity through partition plates, and an air inlet pipe and an air outlet pipe are arranged on the lower cavity of the left tube box and the upper cavity of the right tube box correspondingly; five sets of finned tubes are arranged in the finned tube box from bottom to top, the two ends of the first set of finned tubes from bottom to top are communicated with a lower cavity of the left tube box and a lower cavity of the right tube box respectively, and the two ends of the second set of finned tubes are communicated with a middle cavity of the left tube box and the lower cavity of the right tube box respectively. The two ends of the third group of finned tubes are respectively communicated with the middle cavity of the left tube box and the middle cavity of the right tube box, the two ends of the fourth group of finned tubes are respectively communicated with the upper cavity of the left tube box and the middle cavity of the right tube box, and the two ends of the fifth group of finned tubes are respectively communicated with the upper cavity of the left tube box and the upper cavity of the right tube box. The problem that in the prior art, the associated gas separation effect is poor due to freezing and blocking in winter is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of air coolers and relates to an associated gas air cooling device. The present invention also relates to a working method of the associated gas air cooling device. Background Art

[0002] The associated gas in Changqing Oilfield has a low pressure and a small amount of gas. It is generally collected by using a wellhead constant pressure valve to gather gas, a booster station or a transfer station to concentrate, and then primary separation of oil and gas, and oil and gas separation through an external transmission pipeline. At the booster station or transfer station, an oil and gas mixed transmission integrated device or a crude oil transfer integrated device is used to replace the ground engineering construction in the booster station or transfer station. The gas-liquid separation of the oil and gas mixed transmission integrated device and the crude oil transfer integrated device consists of three modules: oil and gas separation buffer, air cooling, and gas-liquid separation. It has the functions of oil and gas separation, oil and gas buffer, gas cooling, and gas-liquid separation, which solves the problems of dehydration and dehydrocarbonization and closed recovery of condensate during the transportation of wet associated gas.

[0003] In the air cooling module, the fan is used to transport the wet associated gas to the finned tubes, and the water and heavy hydrocarbons in the wet associated gas are separated by using the different condensation points of the components to achieve the purpose of purifying the associated gas. In actual winter production, the separated water and heavy hydrocarbon condensate cannot be produced and discharged immediately, and remain in the finned tubes of the air cooler, causing the air cooler to freeze and block in winter, thereby changing the process and bypassing the associated gas through the air cooler for oil and gas production, resulting in high water and heavy hydrocarbon content in the associated gas, causing the burner to flame out or the explosion-proof door to flash over, and there are certain safety hazards.

[0004] The process parameters such as the temperature of the associated gas entering the air cooler and the air temperature under natural conditions are in constant dynamic change. Therefore, the air volume processing efficiency and power of the air cooler must also change dynamically. If the air volume supply exceeds the air volume or temperature requirements for the precipitation of water and heavy hydrocarbons in the associated gas, it will cause a waste of electrical energy. Summary of the invention

[0005] The object of the present invention is to provide an associated gas air cooling device, which solves the problem in the prior art that the associated gas separation effect is poor due to freezing in winter.

[0006] The technical solution adopted by the present invention is that the associated gas air cooling device includes a fin tube box, and the left and right side walls of the fin tube box are respectively provided with a left tube box and a right tube box, and the left tube box and the right tube box are divided into three cavities of upper, middle and lower by a partition, and the side wall of the lower cavity of the left tube box is connected with an air inlet pipe, the side wall of the upper cavity of the right tube box is connected with an air outlet pipe, and the bottom of the lower cavity of the right tube box is connected with a drain pipe, and five groups of fin tubes are arranged from bottom to top in the fin tube box, from the bottom to the top. The two ends of the first group of fin tubes are respectively connected to the lower cavity of the left tube box and the lower cavity of the right tube box, the two ends of the second group of fin tubes are respectively connected to the middle cavity of the left tube box and the lower cavity of the right tube box, the two ends of the third group of fin tubes are respectively connected to the middle cavity of the left tube box and the middle cavity of the right tube box, the two ends of the fourth group of fin tubes are respectively connected to the upper cavity of the left tube box and the middle cavity of the right tube box, and the two ends of the fifth group of fin tubes are respectively connected to the upper cavity of the left tube box and the upper cavity of the right tube box.

[0007] The present invention is also characterized in that

[0008] Each group of fin tubes includes 6 fin tubes.

[0009] A separation blade rod is passed through each fin tube. The left and right ends of the separation blade rod pass through the left tube box and the right tube box respectively and are connected with maintenance nuts. The maintenance nuts are fixed to the left side wall of the left tube box and the right side wall of the right tube box corresponding to the two ends of the separation blade rod by threaded connection.

[0010] The separation blade rod comprises a round rod penetrating the fin tube, a plurality of separation blades are evenly arranged around the round rod, threads are arranged at both ends of the round rod, and the round rod is connected with a maintenance nut after passing through the left tube box and the right tube box respectively.

[0011] From bottom to top, the first, second and fourth groups of finned tubes are arranged downwardly inclined from the left tube box to the right tube box, and the third and fifth groups of finned tubes are arranged upwardly inclined from the left tube box to the right tube box.

[0012] The first, second and fourth groups of finned tubes are tilted downward by 3°, and the third and fifth groups of finned tubes are tilted upward by 3°.

[0013] Temperature transmitters are provided on both the air inlet pipe and the air outlet pipe. The discharge pipe is connected to a collecting pipe through a pipeline. A remote magnetostrictive liquid level gauge is installed on the top of the collecting pipe. The temperature transmitter and the remote magnetostrictive liquid level gauge are connected to a frequency conversion control cabinet through wires. The outlet of the collecting pipe enters the sewage main pipe through a pipeline. An electric ball valve is provided at the outlet of the collecting pipe, and the electric ball valve is connected to the frequency conversion control cabinet through a wire.

[0014] The air inlet pipe and the air outlet pipe are respectively arranged on the front walls of the left tube box and the right tube box. The rear walls of the left tube box, the right tube box and the fin tube box are commonly connected with one end of the air supply pipe. The other end of the air supply pipe is connected with a variable frequency fan. The variable frequency fan is connected to the frequency conversion control cabinet through a wire.

[0015] The lower sides of the left tube box, the fin tube, the right tube box and the variable frequency fan are provided with mounting brackets, and the bottom surfaces of the left tube box, the right tube box and the variable frequency fan are respectively fixedly connected to the mounting brackets.

[0016] Another technical solution adopted by the present invention is a working method of an associated gas air cooling device. The above-mentioned associated gas air cooling device is adopted. When working, the frequency conversion control cabinet controls to turn on the frequency conversion fan. Under the action of the frequency conversion fan, the wet associated gas enters the lower cavity of the left tube box through the air inlet pipe, refluxes through the fin tubes, passes through the lower cavity of the right tube box, the middle cavity of the left tube box, the middle cavity of the right tube box, the upper cavity of the left tube box, and the upper cavity of the right tube box in turn, and then discharges the separated associated gas through the air outlet pipe. At the same time, the combustible gas, water and heavy hydrocarbon groups in the wet associated gas are separated into liquids in the fin tubes, and then discharged through the drain pipe through the inclined installation of the fin tubes.

[0017] The beneficial effects of the present invention are:

[0018] 1) The present invention adopts an inclined installation structure for finned tubes, so that the finned tubes are produced and discharged immediately, thereby avoiding the accumulation of condensate or the accumulation of impurities and dirt in the finned tubes to produce a clogging effect, and reducing the failure frequency of the air cooling device.

[0019] 2) The present invention designs a high-efficiency separation blade rod in the fin tube to make the gas-liquid separation of the associated gas more thorough and efficient.

[0020] 3) The present invention designs an automatic drainage system at the rear end of the drainage pipe port, which completely solves the problem of condensate freezing and blockage in the air cooler caused by the operator's failure to drain the liquid in time, reduces the labor intensity of the operator, and reduces safety risks.

[0021] 4) The present invention combines temperature with variable frequency fan control to enable precise control of gas temperature and condensate temperature, thereby achieving the effects of efficient gas-liquid separation and energy saving and consumption reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the associated gas air cooling device of the present invention;

[0023] Figure 2 yes Figure 1 A partial cross-sectional view at center A;

[0024] Figure 3 It is a connection diagram of the circuit in the associated gas air cooling device of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the separation blade rod in the associated gas air cooling device of the present invention;

[0026] Figure 5 yes Figure 4 AA view.

[0027] Among them, 1. left tube box, 2. fin tube, 3. right tube box, 4. air inlet pipe, 5. air outlet pipe, 6. drain pipe, 7. mounting bracket, 8. frequency conversion fan, 9. electric ball valve, 10. collecting pipe, 11. remote magnetostrictive liquid level gauge, 12. temperature transmitter, 13. frequency conversion control cabinet, 14. maintenance nut, 15. separation blade rod, 16. fin tube box, 17. air supply pipe. DETAILED DESCRIPTION

[0028] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Example 1

[0030] The associated gas air cooling device of the present invention has a structure as follows Figure 1 As shown, it includes a fin tube box 16, and the left and right side walls of the fin tube box 16 are respectively provided with a left tube box 1 and a right tube box 3, and the left tube box 1 and the right tube box 3 are divided into three cavities of upper, middle and lower by a partition. The side wall of the lower cavity of the left tube box 1 is connected with an air inlet pipe 4, and the air inlet pipe 4 is arranged at the center of the front of the lower cavity of the left tube box 1. The side wall of the upper cavity of the right tube box 3 is connected with an air outlet pipe 5, and the air outlet pipe 5 is arranged at the center of the front of the upper cavity of the right tube box 3. The bottom of the lower cavity of the right tube box 3 is connected with a drain pipe 6, and the drain pipe 6 is arranged at the center of the bottom of the lower cavity of the right tube box 3. The fin tube box 1 is provided with a drain pipe 6, and the drain pipe 6 is provided at the center of the bottom of the lower cavity of the right tube box 3. Five groups of fin tubes 2 are arranged in the tube box 16 from bottom to top, and the two ends of the first group of fin tubes 2 are respectively connected to the lower cavity of the left tube box 1 and the lower cavity of the right tube box 3, the two ends of the second group of fin tubes 2 are respectively connected to the middle cavity of the left tube box 1 and the lower cavity of the right tube box 3, the two ends of the third group of fin tubes 2 are respectively connected to the middle cavity of the left tube box 1 and the middle cavity of the right tube box 3, the two ends of the fourth group of fin tubes 2 are respectively connected to the upper cavity of the left tube box 1 and the middle cavity of the right tube box 3, and the two ends of the fifth group of fin tubes 2 are respectively connected to the upper cavity of the left tube box 1 and the upper cavity of the right tube box 3.

[0031] like Figure 2 As shown, a separation blade rod 15 is inserted into each fin tube 2, and the left and right ends of the separation blade rod 15 are connected to the inspection nut 14 after passing through the left tube box 1 and the right tube box 3 respectively. The inspection nut 14 is fixed to the left side wall of the left tube box 1 and the right side wall of the right tube box 3 corresponding to the two ends of the separation blade rod 15 by threaded connection. From bottom to top, the first, second, and fourth groups of fin tubes 2 are arranged downwardly in a direction from the left tube box 1 to the right tube box 3, and the third and fifth groups of fin tubes 2 are arranged upwardly in a direction from the left tube box 1 to the right tube box 3. The first, second, and fourth groups of fin tubes 2 are tilted downward by 3°, and the third and fifth groups of fin tubes 2 are tilted upward by 3°. The left sides of the second and fourth groups are respectively close to the upper and lower partitions of the cavity in the left tube box, so that the condensate can be produced and discharged immediately.

[0032] like Figure 4-5 The separation blade rod 15 comprises a round rod 15-1 penetrating the fin tube 2, a plurality of separation blades 15-2 are evenly arranged around the round rod 15-1, threads are arranged at both ends of the round rod 15-1, the round rod 15-1 passes through the left tube box 1 and the right tube box 3 respectively and is connected with an inspection nut 14, a plurality of separation blades 15-2 are arranged on the round rod 15-1, and three separation blades 15-2 are arranged on each layer around the circumference of the round rod 15-1.

[0033] The separation blade rod 15 can increase air resistance and help to better separate the liquid.

[0034] Example 2

[0035] The associated gas air cooling device of the present invention has a structure as follows Figure 1 As shown, it includes a fin tube box 16, and the left and right side walls of the fin tube box 16 are respectively provided with a left tube box 1 and a right tube box 3, and the left tube box 1 and the right tube box 3 are divided into three cavities of upper, middle and lower by a partition. The side wall of the lower cavity of the left tube box 1 is connected to an air inlet pipe 4, the side wall of the upper cavity of the right tube box 3 is connected to an air outlet pipe 5, and the bottom of the lower cavity of the right tube box 3 is connected to a drain pipe 6. Five groups of fin tubes 2 are arranged in the fin tube box 16 from bottom to top, and the first group of fin tubes 2 from bottom to top The two ends of the fin tubes 2 are connected to the lower cavity of the left tube box 1 and the lower cavity of the right tube box 3, respectively; the two ends of the second group of fin tubes 2 are connected to the middle cavity of the left tube box 1 and the lower cavity of the right tube box 3, respectively; the two ends of the third group of fin tubes 2 are connected to the middle cavity of the left tube box 1 and the middle cavity of the right tube box 3, respectively; the two ends of the fourth group of fin tubes 2 are connected to the upper cavity of the left tube box 1 and the middle cavity of the right tube box 3, respectively; the two ends of the fifth group of fin tubes 2 are connected to the upper cavity of the left tube box 1 and the upper cavity of the right tube box 3, respectively.

[0036] Each group of fin tubes 2 includes 6 fin tubes 2 .

[0037] like Figure 2 As shown, each fin tube 2 is provided with a separation blade rod 15. By adding the separation blade rod 15 inside the fin tube 2, the combustible gas and water and heavy hydrocarbon components in the associated gas can be quickly and efficiently separated into liquid. Through the inclined installation structure of the fin tube 2, the liquid is discharged from the fin tube 2 in time to ensure that the self-used gas is a dry gas that meets the standards. The left and right ends of the separation blade rod 15 pass through the left tube box 1 and the right tube box 3 respectively, and are connected with maintenance nuts 14. The maintenance nuts 14 are fixed to the left side wall of the left tube box 1 and the right side wall of the right tube box 3 corresponding to the two ends of the separation blade rod 15 by threaded connection.

[0038] From bottom to top, the first, second and fourth groups of finned tubes 2 are arranged downwardly inclined from the left tube box 1 to the right tube box 3, and the third and fifth groups of finned tubes 2 are arranged upwardly inclined from the left tube box 1 to the right tube box 3.

[0039] The first, second and fourth groups of finned tubes 2 are tilted downward by 3°, and the third and fifth groups of finned tubes 2 are tilted upward by 3°.

[0040] like Figure 3 As shown, the air inlet pipe 4 and the air outlet pipe 5 are both provided with a temperature transmitter 12, and the discharge pipe 6 is connected with a collecting pipe 10 through a pipeline, which is made of a stainless steel pipe of φ114×5mm and about 400mm long; the collecting pipe can also adjust the specifications of the steel pipe in time according to the liquid production volume, and a remote magnetostrictive liquid level gauge 11 is installed on the top of the collecting pipe 10. The temperature transmitter 12 and the remote magnetostrictive liquid level gauge 11 are connected to a frequency conversion control cabinet 13 through a wire. The outlet of the collecting pipe 10 enters the sewage main pipe through a pipeline, and the outlet of the collecting pipe 10 is provided with an electric ball valve 9, which is connected to the frequency conversion control cabinet 13 through a wire. The remote magnetostrictive level gauge 11 selects a measuring range that matches the liquid collecting pipe 10, collects and reads the liquid level data through the frequency conversion control cabinet 13, and sets high and low alarm points in the frequency conversion control cabinet 13. The internal PLC controller is used to control the electric ball valve 9 to be opened or closed by the frequency conversion control cabinet 13. Similarly, the frequency conversion control cabinet 13 is provided with a remote, local, manual, and automatic start-up drainage function, thereby ensuring that the liquid collecting pipe 10 in the air cooler is in a set or constant liquid level state, avoiding the phenomenon of liquid accumulation in the pipeline.

[0041] The working method of the associated gas air cooling device of the present invention adopts the above-mentioned associated gas air cooling device. When working, the frequency conversion control cabinet 13 controls to turn on the frequency conversion fan 8. Under the action of the frequency conversion fan 8, the wet associated gas enters the lower cavity of the left tube box 1 through the air inlet pipe 4, refluxes through the fin tube 2, passes through the lower cavity of the right tube box 3, the middle cavity of the left tube box 1, the middle cavity of the right tube box 3, the upper cavity of the left tube box 1, and the upper cavity of the right tube box 3 in sequence, and then discharges the separated associated gas through the air outlet pipe 5. At the same time, the combustible gas, water and heavy hydrocarbon groups in the wet associated gas are separated into liquid in the fin tube 2, and then discharged through the drain pipe 6 through the inclined installation of the fin tube 2.

[0042] Example 3

[0043] The associated gas air cooling device of the present invention has a structure as follows Figure 1As shown, it includes a fin tube box 16, and the left and right side walls of the fin tube box 16 are respectively provided with a left tube box 1 and a right tube box 3, and the left tube box 1 and the right tube box 3 are divided into three cavities of upper, middle and lower by a partition. The side wall of the lower cavity of the left tube box 1 is connected to an air inlet pipe 4, the side wall of the upper cavity of the right tube box 3 is connected to an air outlet pipe 5, and the bottom of the lower cavity of the right tube box 3 is connected to a drain pipe 6. Five groups of fin tubes 2 are arranged in the fin tube box 16 from bottom to top, and the first group of fin tubes 2 from bottom to top The two ends of the fin tubes 2 are connected to the lower cavity of the left tube box 1 and the lower cavity of the right tube box 3, respectively; the two ends of the second group of fin tubes 2 are connected to the middle cavity of the left tube box 1 and the lower cavity of the right tube box 3, respectively; the two ends of the third group of fin tubes 2 are connected to the middle cavity of the left tube box 1 and the middle cavity of the right tube box 3, respectively; the two ends of the fourth group of fin tubes 2 are connected to the upper cavity of the left tube box 1 and the middle cavity of the right tube box 3, respectively; the two ends of the fifth group of fin tubes 2 are connected to the upper cavity of the left tube box 1 and the upper cavity of the right tube box 3, respectively.

[0044] Each group of fin tubes 2 includes 6 fin tubes 2 .

[0045] A separation blade rod 15 is passed through each fin tube 2. The left and right ends of the separation blade rod 15 pass through the left tube box 1 and the right tube box 3 respectively and are connected with an inspection nut 14. The inspection nut 14 is fixed to the left side wall of the left tube box 1 and the right side wall of the right tube box 3 corresponding to the two ends of the separation blade rod 15 by threaded connection.

[0046] From bottom to top, the first, second and fourth groups of finned tubes 2 are arranged downwardly inclined from the left tube box 1 to the right tube box 3, and the third and fifth groups of finned tubes 2 are arranged upwardly inclined from the left tube box 1 to the right tube box 3.

[0047] The first, second and fourth groups of finned tubes 2 are tilted downward by 3°, and the third and fifth groups of finned tubes 2 are tilted upward by 3°.

[0048] Temperature transmitters 12 are provided on the air inlet pipe 4 and the air outlet pipe 5. The liquid collecting pipe 10 is connected to the liquid discharge pipe 6 through a pipeline. A remote magnetostrictive liquid level gauge 11 is installed on the top of the liquid collecting pipe 10. The temperature transmitter 12 and the remote magnetostrictive liquid level gauge 11 are connected to a frequency conversion control cabinet 13 through a wire. The outlet of the liquid collecting pipe 10 enters the sewage main pipe through a pipeline. The outlet of the liquid collecting pipe 10 is provided with an electric ball valve 9, and the electric ball valve 9 is connected to the frequency conversion control cabinet 13 through a wire. The remote magnetostrictive liquid level gauge adopts a top-mounted type and is installed on the top of the liquid collecting pipe. The range that matches the liquid collecting pipe is selected. The liquid level data is collected and read through the frequency conversion control cabinet, and the high and low alarm points are set in the frequency conversion control cabinet. The internal PLC controller is used to control the electric ball valve 9 to open or close. Similarly, the frequency conversion control cabinet is equipped with a drainage function that can be started remotely, locally, manually, and automatically, thereby ensuring that the collecting pipe in the air cooler is in a set or constant liquid level state, avoiding liquid accumulation in the pipeline.

[0049] The air inlet pipe 4 and the air outlet pipe 5 are respectively arranged on the front walls of the left tube box 1 and the right tube box 3. The rear walls of the left tube box 1, the right tube box 3 and the fin tube box 16 are commonly connected to one end of the air supply pipe 17. The other end of the air supply pipe 17 is connected to the variable frequency fan 8. The variable frequency fan 8 is connected to the frequency conversion control cabinet 13 through a wire.

[0050] The device is provided with a temperature transmitter 12 on the gas inlet pipe 4 and the outlet pipe 5 respectively, which is used to monitor the temperature of the air cooler tube bundle inlet and outlet. The temperature data of the two temperature transmitters 12 are collected and read through the frequency conversion control cabinet 13. At the same time, the frequency conversion controller controls the frequency of the frequency conversion fan 8 through the internal PLC controller, and the start signal is interlocked with the air cooler unit temperature. The frequency conversion control cabinet 13 is provided with remote, local, manual, and automatic start functions, thereby ensuring that the air cooler unit tube bundle temperature is always in a set or constant state, achieving the effect of energy saving and consumption reduction.

[0051] Example 4

[0052] On the basis of Example 3, a mounting bracket 7 is provided on the lower side of the left tube box 1, the fin tube 2, the right tube box 3, and the variable frequency fan 8, and the bottom surfaces of the left tube box 1, the right tube box 3, and the variable frequency fan 8 are respectively fixedly connected to the mounting bracket 7.

Claims

1. An associated gas air cooling device, characterized in that: The invention comprises a fin tube box (16), wherein the left and right side walls of the fin tube box (16) are respectively provided with a left tube box (1) and a right tube box (3), wherein the left tube box (1) and the right tube box (3) are divided into three cavities, namely, upper, middle and lower, by a partition plate, wherein the side wall of the lower cavity of the left tube box (1) is connected with an air inlet pipe (4), the side wall of the upper cavity of the right tube box (3) is connected with an air outlet pipe (5), and the bottom of the lower cavity of the right tube box (3) is connected with a liquid drain pipe (6), and five groups of fin tubes (2) are arranged from bottom to top in the fin tube box (16), and the two ends of the first group of fin tubes (2) from bottom to top are connected with each other. The two ends of the fin tubes (2) of the second group are respectively connected to the middle cavity of the left tube box (1) and the lower cavity of the right tube box (3); the two ends of the fin tubes (2) of the third group are respectively connected to the middle cavity of the left tube box (1) and the middle cavity of the right tube box (3); the two ends of the fin tubes (2) of the fourth group are respectively connected to the upper cavity of the left tube box (1) and the middle cavity of the right tube box (3); and the two ends of the fin tubes (2) of the fifth group are respectively connected to the upper cavity of the left tube box (1) and the upper cavity of the right tube box (3).

2. The associated gas air cooling device according to claim 1, characterized in that: Each group of fin tubes (2) comprises six fin tubes (2).

3. The associated gas air cooling device according to claim 1, characterized in that: A separation blade rod (15) is inserted into each of the finned tubes (2). The left and right ends of the separation blade rod (15) pass through the left tube box (1) and the right tube box (3) respectively and are connected with inspection nuts (14). The inspection nuts (14) are fixed to the left side wall of the left tube box (1) and the right side wall of the right tube box (3) corresponding to the two ends of the separation blade rod (15) by means of threaded connection.

4. The associated gas air cooling device according to claim 3, characterized in that: The separation blade rod (15) comprises a round rod (15-1) penetrating the fin tube (2), a plurality of separation blades (15-2) are evenly arranged around the round rod (15-1), threads are arranged at both ends of the round rod (15-1), and the round rod (15-1) is connected to a maintenance nut (14) after passing through the left tube box (1) and the right tube box (3) respectively.

5. The associated gas air cooling device according to any one of claims 1 to 4, characterized in that: From bottom to top, the finned tubes (2) of the first, second and fourth groups are arranged downwardly inclined in a direction from the left tube box (1) to the right tube box (3), and the finned tubes (2) of the third and fifth groups are arranged upwardly inclined in a direction from the left tube box (1) to the right tube box (3).

6. The associated gas air cooling device according to claim 5, characterized in that: The fin tubes (2) of the first, second and fourth groups are inclined downward by 3°, and the fin tubes (2) of the third and fifth groups are inclined upward by 3°.

7. The associated gas air cooling device according to claim 5, characterized in that: The air inlet pipe (4) and the air outlet pipe (5) are both provided with a temperature transmitter (12); the liquid discharge pipe (6) is connected to a liquid collecting pipe (10) via a pipeline; a remote magnetostrictive liquid level gauge (11) is installed on the top of the liquid collecting pipe (10); the temperature transmitter (12) and the remote magnetostrictive liquid level gauge (11) are connected to a frequency conversion control cabinet (13) via a wire; the outlet of the liquid collecting pipe (10) enters a sewage main pipe via a pipeline; the outlet of the liquid collecting pipe (10) is provided with an electric ball valve (9); and the electric ball valve (9) is connected to the frequency conversion control cabinet (13) via a wire.

8. The associated gas air cooling device according to claim 7, characterized in that: The air inlet pipe (4) and the air outlet pipe (5) are respectively arranged on the front walls of the left tube box (1) and the right tube box (3); the rear walls of the left tube box (1), the right tube box (3) and the fin tube box (16) are commonly connected to one end of an air supply pipe (17); the other end of the air supply pipe (17) is connected to a variable frequency fan (8); and the variable frequency fan (8) is connected to the variable frequency control cabinet (13) via a wire.

9. The associated gas air cooling device according to claim 8, characterized in that: A mounting bracket (7) is provided on the lower side of the left tube box (1), the fin tube (2), the right tube box (3) and the variable frequency fan (8); the bottom surfaces of the left tube box (1), the right tube box (3) and the variable frequency fan (8) are respectively fixedly connected to the mounting bracket (7).

10. The working method of the associated gas air cooling device is characterized in that: The associated gas air cooling device according to claim 9 is used, specifically: when working, the frequency conversion control cabinet (13) controls the frequency conversion fan (8) to start, and under the action of the frequency conversion fan (8), the wet associated gas enters the lower cavity of the left tube box (1) through the air inlet pipe (4), refluxes through the fin tube (2), passes through the lower cavity of the right tube box (3), the middle cavity of the left tube box (1), the middle cavity of the right tube box (3), the upper cavity of the left tube box (1), the upper cavity of the right tube box (3), and then discharges the separated associated gas through the outlet pipe (5). At the same time, the combustible gas, water and heavy hydrocarbons in the wet associated gas are separated into liquid in the fin tube (2), and then discharged through the drain pipe (6) through the inclined installation of the fin tube (2).

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