Device for improving effect of air cooler of coal bed gas compressor

Abstract

The utility model relates to the field of coal bed gas gathering, transportation and compression, in particular to a device for improving the effect of an air cooler of a coal bed gas compressor. Comprising a water tank, a circulating pump, a control system, a wet curtain humidifying and cooling system and a high-pressure spraying and cooling system, cooling water is evenly distributed and flows into a water flow baffle plate wet curtain through a spraying nozzle, air is sucked into an air cooler after passing through a water flow baffle plate, dust in the passing air is cleaned and adsorbed through water flow on the water flow baffle plate, meanwhile, the air temperature is reduced, and the cooling effect is improved. According to the utility model, the influence on the air quantity caused by the reduction of the rotating speed of the unit in high-temperature weather is avoided, the air with lower temperature and higher humidity exchanges heat with the heat exchange fins of the air cooler, the heat exchange efficiency is improved, the heat exchange efficiency is improved, and the heat exchange efficiency is improved. The heat exchange efficiency is improved, and the exhaust temperature of the coal bed gas compressor is reduced and can be reduced by 10-15 DEG C.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of coalbed gas gathering and compression, in particular to a device for improving the effect of a coalbed gas compressor air cooler. BACKGROUND

[0002] The booster station compressor is usually a reciprocating piston compressor, which uses a wind-cooled air cooler to cool the compressed coalbed gas. The temperature of the coalbed gas discharged after being cooled by the air cooler in summer is as high as 50-60 DEG C. The excessively high exhaust temperature makes the unit operation stability poor, and the unit is prone to high-temperature alarm in summer. In severe cases, the unit will be shut down, which seriously restricts the processing capacity of the station. In addition, the excessively high temperature of the coalbed gas also reduces the subsequent triethylene glycol or molecular sieve dehydration effect, and the water dew point of the external coalbed gas is high, which seriously affects the quality of the long-distance pipeline coalbed gas.

[0003] In order to improve the cooling effect of the compressor air cooler, ensure the stable operation of the coalbed gas compressor, and ensure the dehydration effect of the dehydration equipment, the exhaust temperature of the coalbed gas compressor must be reduced from the source, and corresponding measures must be taken on the compressor air cooler to reduce the exhaust temperature of the unit and improve the operation stability of the compressor. SUMMARY

[0004] In view of the problem that the hole forming quality of the bored pile under the high backfill area geological condition is difficult to guarantee in the prior art, the utility model provides a device for improving the effect of a coalbed gas compressor air cooler, which reduces the engineering cost and ensures the pile foundation hole forming construction quality through a combined construction process.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a device for improving the effect of a coalbed gas compressor air cooler, which comprises three-stage compression to five-stage compression of coalbed gas, a cooling system is arranged after each stage of compression of the coalbed gas, the cooling system comprises an air cooler shell, a cooling fan is arranged in the air cooler shell, the cooling fan blows ambient air to heat exchange finned tubes, and blows away the high-temperature air after heat exchange from the air cooler shell, and the device further comprises a water tank, a control system and a wet curtain humidification and cooling system, wherein one side of the water tank is provided with a water delivery pipe, the water delivery pipe is provided with a circulating pump, the water delivery pipe is connected to the wet curtain humidification and cooling system, the wet curtain humidification and cooling system is arranged at the lower part of the heat exchange finned tube, the wet curtain humidification and cooling system comprises a spray main pipe, spray nozzles and a water flow baffle, the water delivery pipe is connected to the spray main pipe, a plurality of spray nozzles are arranged on the spray main pipe, the spray nozzles are downward, the lower part of the spray nozzles is provided with the water flow baffle, the spray nozzles distribute the cooling water into the water flow baffle, and ambient air is blown to the heat exchange finned tube after passing through the water flow baffle when the cooling fan rotates, and the control system comprises a PLC, and the PLC is used for realizing intelligent control of the wet curtain humidification and cooling system.

[0006] Further, the high-pressure spray cooling system is arranged between the heat exchange finned tube and the wet curtain humidification and cooling system, the high-pressure spray cooling system comprises a spray main pipe and spray nozzles, the water pipe is connected to the spray main pipe, a plurality of spray nozzles are arranged on the spray main pipe, the spray nozzles are upwardly directed to the heat exchange finned tube, and the spray nozzles atomize the cooling water and diffuse in the air cooler.

[0007] Further, the air cooler shell bottom is provided with a water storage tank, the condensed water falls to the water storage tank, the water storage tank bottom is provided with a drain pipe, and the drain pipe is connected to the water tank.

[0008] Further, the water tank is provided with a water replenishing pipe, the water level change in the water tank is captured through a sensor, and intelligent control of the water replenishing pipe is realized through PLC.

[0009] Compared with the prior art, the air cooler has the advantages that:

[0010] 1. The air cooler changes the air cooling into semi-air cooling and semi-water cooling, so that the operation effect of the air cooler is improved, the exhaust temperature of the coal bed gas compressor can be reduced by 10-15 DEG C after the humidification device is opened in hot summer weather.

[0011] 2. The wet curtain humidification and cooling system greatly reduces the equipment fouling speed compared with directly spraying water downward from the top of the air cooler.

[0012] 3. The air cooler avoids the influence of high-temperature weather on the gas volume by reducing the unit rotation speed, so that the unit operation is more stable. The air with lower temperature and higher humidity exchanges heat with the heat exchange fins of the air cooler, so that the heat exchange efficiency is improved, and the exhaust temperature of the coal bed gas compressor is further reduced.

[0013] 4. The exhaust temperature of the coal bed gas compressor is closer to the temperature under the best operation condition of the station dehydration equipment, the subsequent dehydration effect is improved, and the external transportation coal bed gas quality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a single air cooler principle diagram of the air cooler;

[0015] Figure 2 It is a compressor air path and cooler cooling process principle diagram of the air cooler taking the coal bed gas three-stage compression as an example;

[0016] Figure 3 It is a prior art air cooler principle diagram.

[0017] BRIEF DESCRIPTION OF DRAWINGS

[0018] 1-Air cooler casing; 2-Cooling fan; 3-Heat exchange finned tube; 4-Water tank; 5-Water supply pipe; 6-Circulation pump; 7-Spray main pipe; 8-Spray nozzle; 9-Spray main pipe; 10-Spray nozzle; 11-Water flow baffle; 12-Water storage tank; 13-Drain pipe; 14-Water supply pipe. Detailed Implementation

[0019] Preferred embodiments of the present invention will now be described in more detail. While preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0020] Reciprocating coalbed methane compressors are mostly three-stage or five-stage compressors. After each stage of compression, the coalbed methane is cooled by an air cooler. The air cooler draws air from the surrounding area into its lower part using a cooling fan, where it is forced to exchange heat with the coalbed methane flowing through its fins, thus cooling the coalbed methane inside the pipes. Figure 3 The diagram shown is a schematic of an air cooler in the prior art. It uses a cooling fan 2 to guide ambient air to the heat exchange finned tube 3 for cooling and heat exchange. In summer, the coalbed methane after being pressurized is cooled by the air cooler and the exhaust temperature is as high as 50℃-60℃. The excessively high exhaust temperature makes the unit's operating stability worse, and in severe cases, it can cause the unit to shut down.

[0021] like Figures 1-2 As shown, this utility model proposes a device for improving the effect of air cooler in coalbed methane compressor, including a water tank, a circulating pump, a control system, a wet curtain humidification and cooling system, and a high-pressure spray cooling system.

[0022] The evaporative cooling and humidification system: Cooling water enters the spray main pipe 7 through the circulating pump 6, and is evenly distributed into the evaporative cooling pad 11 through the spray nozzles 8. When the cooling fan 2 of the air cooler rotates, the air is drawn into the air cooler after passing through the water flow baffle 11. The water flow on the water flow baffle 11 washes and adsorbs the dust in the passing air, while reducing the air temperature and increasing the air humidity.

[0023] High-pressure spray cooling system: Another portion of cooling water enters the spray main pipe 9 through the circulating pump 6, and is atomized by the spray nozzles 10, spreading throughout the air cooler to further reduce the temperature of the air drawn into the air cooler and increase the air humidity. The cooler and more humid air exchanges heat with the heat exchange fins of the air cooler, thereby improving the heat exchange efficiency and further reducing the exhaust temperature of the coalbed methane compressor.

[0024] Specifically, the utility model provides a device that promotes coalbed gas compressor air cooler effect, including coalbed gas three stage compression five stage compression, the cooling system is provided with after every stage compression of coalbed gas, the cooling system includes air cooler shell 1, is provided with cooling fan 2 in air cooler shell 1, cooling fan 2 blows the environment air to heat exchange finned tube 3, and the high temperature air after heat exchange blows away air cooler shell 1, still includes water tank 4, control system, wet curtain humidification cooling system, high pressure spray cooling system, wherein, water tank 4 side is provided with water delivery pipe 5, water delivery pipe 5 is provided with circulating pump 6, water delivery pipe 5 is connected to wet curtain humidification cooling system and high pressure spray cooling system.

[0025] Wet curtain humidification cooling system is arranged in the lower part of heat exchange finned tube 3, and the wet curtain humidification cooling system comprises a spray main pipe 7, spray nozzles 8 and a water flow baffle 11, the water delivery pipe 5 is connected to the spray main pipe 7, a plurality of spray nozzles 8 are arranged on the spray main pipe 7, the spray nozzles 8 have downward nozzles, and the lower part of the spray nozzles 8 is provided with the water flow baffle 11. The cooling water distributed by the spray nozzles 8 flows into the water flow baffle 11, and the environment air blows to the heat exchange finned tube 3 after passing through the water flow baffle 11 when the cooling fan 2 rotates.

[0026] The high pressure spray cooling system is arranged between the heat exchange finned tube 3 and the wet curtain humidification cooling system, and the high pressure spray cooling system comprises a spray main pipe 9 and spray nozzles 10, the water delivery pipe 5 is connected to the spray main pipe 9, a plurality of spray nozzles 10 are arranged on the spray main pipe 9, the spray nozzles 10 have upward nozzles pointing to the heat exchange finned tube 3, and the cooling water is atomized by the spray nozzles 10 and diffused in the air cooler.

[0027] The bottom of the air cooler shell 1 is provided with a water storage tank 12, and the condensed water falls into the water storage tank 12. The bottom of the water storage tank 12 is provided with a drain pipe 13, and the drain pipe 13 is connected to the water tank 4. The water tank 4 is provided with a water replenishing pipe 14, the water level change in the water tank 4 is captured by a sensor, and the intelligent control of the water replenishing pipe 14 is realized by PLC.

[0028] The control system comprises a PLC, and the intelligent control of the wet curtain humidification cooling system and the high pressure spray cooling system is realized by the PLC. The parameters set by the PLC can realize:

[0029] a. When the environment temperature exceeds the set first level temperature, the wet curtain humidification cooling system of the humidification system is automatically started. At this time, the original air cooling system and the wet curtain humidification cooling system of the humidification system are in an open state, and the high pressure spray cooling system of the humidification system is in a closed state;

[0030] b. When the environment temperature exceeds the set second level temperature, the high pressure spray cooling system of the humidification system is automatically started. At this time, the original air cooling system, the wet curtain humidification cooling system and the high pressure spray cooling system of the humidification system are all in a running state;

[0031] c. When the ambient temperature is lower than the set secondary temperature, the high-pressure spray cooling system of the humidification system is automatically stopped;

[0032] d. When the ambient temperature is lower than the set primary temperature, the wet curtain humidification cooling system of the humidification system is automatically stopped;

[0033] e. Regardless of the change of the ambient temperature, the original air cooling system of the compressor is always in the open state.

[0034] The specific principles and effects in the utility model are as follows:

[0035] a. The water baffle 11 is added at the air inlet of the air cooler, water flows into the water baffle 11 through the spray nozzle 8 on the spray main pipe 7, the heat exchange between the water and air when the water flows through the water baffle 11 is fully utilized, the temperature of the suction air is reduced, and the heat absorption capacity is improved; at the same time, the humidity of the air is increased after passing through the water baffle, the water vapor evaporates and absorbs heat when meeting the fin, and the cooling effect is further ensured;

[0036] b. The temperature of the air is reduced again, the humidity of the air is improved, and the cooling effect is further ensured through the spray nozzle 10;

[0037] c. The water flow and the air inlet amount can be controlled through the spray nozzle 10 and the spray nozzle 8, the operation mode of the equipment suitable for the current ambient temperature can be effectively found, on the one hand, the exhaust temperature of the coal bed gas compressor can meet the required working condition of production, and on the other hand, the good operation condition can also ensure the economy of production.

[0038] d. The water tank 12 is designed at the bottom of the air cooler, the spray water and the atomized water are gathered in the water tank 12, and the water tank 12 enters the water tank 4 through the drain pipe 13, so that the water recycling is realized.

[0039] e. Because a large amount of water is consumed in the water circulation process of the whole humidification device, the water needs to be regularly supplemented through the water supplement pipe 14.

[0040] The application has three operation modes in use:

[0041] a. Only the original air cooling system is used for cooling:

[0042] When the ambient temperature is low, only the original air cooling system is used, and the exhaust temperature of the coal bed gas compressor can reach the appropriate range. In this operation mode, the wet curtain humidification cooling system and the high-pressure spray cooling system of the whole humidification system are in the closed state.

[0043] b. The original air cooling system + wet curtain humidification cooling system:

[0044] When the ambient temperature gradually increases to the set first level temperature, the original air cooling system alone cannot make the exhaust temperature of the compressor reach the appropriate range, and the wet curtain humidification and cooling system of the humidification device is automatically put into operation to cool the inhaled air, thereby improving the cooling effect. In this mode of operation, the wet curtain humidification and cooling system of the humidification system is in an open state, and the high-pressure spray cooling system is in a closed state.

[0045] c. The original air cooling system + the wet curtain humidification and cooling system + the high-pressure spray cooling system:

[0046] In hot summer weather, when the ambient temperature increases to the set second level temperature, the original air cooling system and the wet curtain humidification and cooling system cannot make the exhaust temperature of the coalbed methane compressor reach the appropriate range, at which time the high-pressure spray cooling system is automatically put into operation to cool and humidify the inhaled air again, thereby improving the heat exchange effect and reducing the exhaust temperature of the compressor. In this mode of operation, the wet curtain humidification and cooling system and the high-pressure spray cooling system of the humidification system are both in an open state.

[0047] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent substitutions or changes to the technical solution of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An apparatus for improving the effect of an air cooler in a coalbed methane compressor, comprising three-stage to five-stage compression of coalbed methane, wherein a cooling system is provided after each stage of compression, the cooling system comprising an air cooler housing (1), wherein a cooling fan (2) is provided inside the air cooler housing (1), the cooling fan (2) blowing ambient air toward heat exchange finned tubes (3), and blowing the high-temperature air after heat exchange away from the air cooler housing (1), characterized in that, It also includes a water tank (4), a control system, and a wet curtain humidification and cooling system. A water supply pipe (5) is provided on one side of the water tank (4), and a circulating pump (6) is installed on the water supply pipe (5). The water supply pipe (5) is connected to the wet curtain humidification and cooling system, which is located below the heat exchange finned tube (3). The wet curtain humidification and cooling system includes a main spray pipe (7), spray nozzles (8), and a water flow baffle (11). The water supply pipe (5) is connected to the main spray pipe (7). The main spray pipe (7) is provided with a plurality of spray nozzles (8), the nozzles of the spray nozzles (8) are downward, and the water flow baffle (11) is provided at the lower part of the spray nozzles (8). The spray nozzles (8) distribute cooling water into the water flow baffle (11). When the cooling fan (2) rotates, the ambient air passes through the water flow baffle (11) and blows towards the heat exchange finned tube (3). The control system includes a PLC, which realizes intelligent control of the wet curtain humidification and cooling system.

2. The device for improving the effect of air cooler in coalbed methane compressor according to claim 1, characterized in that, It also includes a high-pressure spray cooling system, which is located between the heat exchange finned tube (3) and the wet curtain humidification and cooling system. The high-pressure spray cooling system includes a spray main pipe (9) and spray nozzles (10). The water supply pipe (5) is connected to the spray main pipe (9). Several spray nozzles (10) are provided on the spray main pipe (9). The nozzles (10) point upwards toward the heat exchange finned tube (3). The spray nozzles (10) atomize the cooling water and diffuse it in the air cooler.

3. The device for improving the effect of air cooler in coalbed methane compressor according to claim 1 or 2, characterized in that, The air cooler housing (1) has a water storage tank (12) at the bottom, and condensate falls into the water storage tank (12). The water storage tank (12) has a drain pipe (13) at the bottom, and the drain pipe (13) is connected to the water tank (4).

4. The device for improving the effect of air cooler in coalbed methane compressor according to claim 1 or 2, characterized in that, The water tank (4) is equipped with a water supply pipe (14). The water level change in the water tank (4) is captured by a sensor, and the water supply pipe (14) is intelligently controlled by a PLC.

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