Ground pump station capable of working continuously

Abstract

The utility model relates to the technical field of ground pump stations, and discloses a continuously working ground pump station which comprises two air inlet pipelines. The two connecting pipes are fixedly connected to the lower parts of the two air inlet pipelines; the first air inlet valve is installed outside the connecting pipe on the left side, and the second air inlet valve is installed outside the air inlet pipeline on the left side; the third air inlet valve is mounted outside the air inlet pipeline on the right side, and the fourth air inlet valve is mounted outside the connecting pipe on the right side; the first pump is installed at the bottom of the connecting pipe on the left side, and the second pump is installed at the bottom of the air inlet pipeline on the left side. According to the utility model, the continuity of the underground extraction pipeline is ensured, the abnormal gas concentration is avoided, and the extraction continuity is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to ground pump station technical field especially relates to a continuous ground pump station. BACKGROUND

[0002] In the coal mine underground gas extraction, the ground pump station usually adopts the redundancy configuration of multiple gas extraction pumps (such as 2 use 2 spare) to ensure the extraction continuity, and the traditional switching maintenance process relies on manual operation valve (such as inlet valve, outlet valve), and the running pump group valve needs to be closed in turn and the standby pump group valve is started, which leads to the interruption of underground extraction pipeline in the switching process for 5-6 minutes, during which, the extraction causes the extraction negative pressure to drop suddenly, and the gas is easy to accumulate in the borehole, causes the concentration abnormal fluctuation (over-limit risk), and the airflow interruption can trigger the false alarm of safety monitoring system, thereby affecting the production safety. SUMMARY

[0003] In order to make up for the above shortage, the utility model provides a continuous ground pump station, which aims at improving the problem that the traditional switching maintenance process in the prior art relies on manual operation valve (such as inlet valve, outlet valve), and the running pump group valve needs to be closed in turn and the standby pump group valve is started, which leads to the interruption of underground extraction pipeline in the switching process for 5-6 minutes, during which, the extraction causes the extraction negative pressure to drop suddenly, and the gas is easy to accumulate in the borehole, causes the concentration abnormal fluctuation.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A continuous ground pump station, comprising:

[0006] Two inlet pipes, the number of the inlet pipes is two;

[0007] Two connecting pipes, two connecting pipes are fixedly connected at the lower part of two inlet pipes;

[0008] A first inlet valve and a second inlet valve, the first inlet valve is installed outside the left connecting pipe, and the second inlet valve is installed outside the left inlet pipe;

[0009] A third inlet valve and a fourth inlet valve, the third inlet valve is installed outside the right inlet pipe, and the fourth inlet valve is installed outside the right connecting pipe;

[0010] A first pump and a second pump, the first pump is installed at the bottom of the left connecting pipe, and the second pump is installed at the bottom of the left inlet pipe;

[0011] A third pump and a fourth pump, the third pump is installed at the bottom of the right inlet pipe, and the fourth pump is installed at the bottom of the right connecting pipe;

[0012] and an exhaust assembly for exhausting gas.

[0013] Further, the exhaust assembly comprises an exhaust pipe connected with the two air inlet pipes and the two connecting pipes, and air outlets are fixedly connected to the top of the exhaust pipe.

[0014] Further, the exhaust pipe is fixedly connected with adapter pipes on both sides of the lower part, and a first air outlet valve, a second air outlet valve, a third air outlet valve and a fourth air outlet valve are sequentially installed on the outside of the adapter pipes from left to right.

[0015] Further, the adapter pipes are each installed with a gas-liquid separator at the bottom, and the gas-liquid separators are connected with the first pump, the second pump, the third pump and the fourth pump through pipes.

[0016] Further, the gas-liquid separator is installed with an exhaust pipe at the bottom, and the exhaust pipe is used for exhausting separated liquid.

[0017] Further, the air inlet pipes are each fixedly connected with an air inlet at the top.

[0018] Further, the first pump, the second pump, the third pump and the fourth pump are controlled by a PLC program.

[0019] Further, the fourth pump is installed with a liquid adding pipe at the top, and the liquid adding pipe is connected with the connecting pipes and the adapter pipes.

[0020] The utility model has the advantages of the following beneficial effects:

[0021] In the utility model, the inlet or outlet valves of the four pumps are synchronously opened to 45 degrees by PLC control, so that the running pump group and the standby pump group are connected through the connecting pipes; after confirmation of stability, the standby pump valve is fully opened by PLC and the original running pump valve is closed, the gas-liquid separator is stabilized, the downhole pumping pipeline is ensured to be continuous, the abnormal gas concentration is avoided, and the pumping continuity is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A plan view of the continuous working ground pump station is provided in the utility model.

[0023] LEGEND:

[0024] 1, air inlet; 2, first air inlet valve; 3, second air inlet valve; 4, third air inlet valve; 5, fourth air inlet valve; 6, exhaust pipe; 7, air outlet; 8, connecting pipe; 9, first air outlet valve; 10, second air outlet valve; 11, third air outlet valve; 12, fourth air outlet valve; 13, liquid feeding pipe; 14, gas-liquid separator; 15, first pump; 16, second pump; 17, third pump; 18, fourth pump; 19, discharge pipe; 20, air inlet pipe; 21, connecting pipe. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] Reference Figure 1The utility model provides a kind of embodiment of continuous operation ground pump station, comprising: air inlet pipeline 20, the number of air inlet pipeline 20 is two;Two connecting pipes 8, two connecting pipes 8 are fixedly connected in the lower part of two air inlet pipeline 20;First air inlet valve 2 and second air inlet valve 3, first air inlet valve 2 is installed in the outside of left connecting pipe 8, and second air inlet valve 3 is installed in the outside of left air inlet pipeline 20;Third air inlet valve 4 and fourth air inlet valve 5, third air inlet valve 4 is installed in the outside of right air inlet pipeline 20, and fourth air inlet valve 5 is installed in the outside of right connecting pipe 8;First pump 15 and second pump 16, first pump 15 is installed in the bottom of left connecting pipe 8, and second pump 16 is installed in the bottom of left air inlet pipeline 20;Third pump 17 and fourth pump 18, third pump 17 is in the bottom of right air inlet pipeline 20, and fourth pump 18 is installed in the bottom of right connecting pipe 8;And exhaust assembly, exhaust assembly is used to discharge gas, exhaust assembly includes exhaust pipeline 6, exhaust pipeline 6 is connected with two air inlet pipeline 20 and two connecting pipes 8, exhaust pipeline 6 top both sides are fixedly connected with gas outlet 7, exhaust pipeline 6 lower part both sides are fixedly connected with adapter pipe 21, a plurality of adapter pipes 21 outside are sequentially installed with first air outlet valve 9, second air outlet valve 10, third air outlet valve 11 and fourth air outlet valve 12 from left to right, and adapter pipe 21 bottom is installed with gas-liquid separator 14, and a plurality of gas-liquid separators 14 are connected with first pump 15, second pump 16, third pump 17 and fourth pump 18 by pipeline, and gas-liquid separator 14 bottom is installed with discharge pipeline 19, and discharge pipeline 19 is used to discharge separated liquid, and air inlet pipeline 20 top is fixedly connected with air inlet 1, and first pump 15, second pump 16, third pump 17 and fourth pump 18 are controlled by PLC program, and fourth pump 18 top is installed with liquid adding pipe 13, and liquid adding pipe 13 is connected with a plurality of connecting pipes 8 and a plurality of adapter pipes 21.

[0027] Specifically, the air inlet valve (original manual valve) and the air outlet valve (original manual valve) of the four gas extraction pumps (two for two backups) are all upgraded to electric regulating valves, supporting PLC remote control and opening degree feedback (0°-90° adjustable), then a set of PLC program control is added, the air inlet valve and the air outlet valve of the first pump 15 and the second pump 16 are set as synchronous interlocking control, and the air inlet valve and the air outlet valve of the third pump 17 and the fourth pump 18 are set as synchronous interlocking control, in the pump switching process, the air inlet valve and the air outlet valve of the third pump 17 and the fourth pump 18 to be switched are opened to 45° (half-open state), then the operator needs to confirm the gas path pressure and flow stability on site, then the air inlet valve and the air outlet valve of the pump to be switched are opened from 45° to 0° (fully open), the gas-liquid separator 14 automatically adjusts the pressure, ensures that the underground extraction borehole (air inlet pipeline 20) and the exhaust pipeline 6 are always connected, and avoids abnormal gas concentration.

[0028] Working principle: through the PLC programmed control four gas extraction pump (two use two backup) into / out of the gas valve action, realize uninterrupted switching, in the pump stage, PLC program will run the first pump 15 and the second pump 16 and the first gas valve 2 and the second gas valve 3 and the first gas valve 9 and the second gas valve 10 of the third pump 17 and the fourth pump 18 to be switched to 45 degrees, make the two pump group through the connecting pipe 21 form connection, use the connecting pipe 8 and the exhaust pipe 6 maintain the airflow buffer;The operator confirms that the gas circuit is stable, and the PLC gradually opens the third gas valve 4, the fourth gas valve 5 and the third gas valve 11 and the fourth gas valve 12 of the pump to be switched, while closing the original running pump valve to full closed, in the process, the gas-liquid separator 14 balances the pressure, ensures that the downhole extraction borehole through the inlet pipe 20 is always connected with the exhaust pipe 19, avoids the abnormal gas concentration caused by stopping pumping, realizes the dynamic transition of airflow, and guarantees the continuity of extraction.

[0029] Finally, it should be pointed out that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A continuously operating ground pump station, characterized in that The utility model relates to a kind of air supply and exhaust systems, including: Air inlet pipe (20), the quantity of the air inlet pipe (20) is two; Two connecting pipes (8), two the connecting pipes (8) are fixedly connected in the lower portion of two air inlet pipe (20); First air inlet valve (2) and second air inlet valve (3), the first air inlet valve (2) is installed on the outside of left connecting pipe (8), and the second air inlet valve (3) is installed on the outside of left air inlet pipe (20); Third air inlet valve (4) and fourth air inlet valve (5), the third air inlet valve (4) is installed on the outside of right air inlet pipe (20), and the fourth air inlet valve (5) is installed on the outside of right connecting pipe (8); First pump (15) and second pump (16), the first pump (15) is installed in the bottom of left connecting pipe (8), and the second pump (16) is installed in the bottom of left air inlet pipe (20); Third pump (17) and fourth pump (18), the third pump (17) is in the bottom of right air inlet pipe (20), and the fourth pump (18) is installed in the bottom of right connecting pipe (8); And exhaust assembly, for discharging gas.

2. A continuous duty ground pump station according to claim 1, wherein: The exhaust assembly includes exhaust pipe (6), the exhaust pipe (6) is connected with two air inlet pipe (20) and two connecting pipes (8), and the top of the exhaust pipe (6) is fixedly connected with air outlet (7) on both sides.

3. A continuous duty ground pump station according to claim 2, wherein: The lower portion of the exhaust pipe (6) is fixedly connected with adapter pipe (21) on both sides, and a plurality of first air outlet valves (9), second air outlet valves (10), third air outlet valves (11) and fourth air outlet valves (12) are sequentially installed outside the adapter pipe (21) from left to right.

4. A continuous duty ground pump station according to claim 3, wherein: A plurality of gas-liquid separators (14) are installed in the bottom of a plurality of adapter pipes (21), and a plurality of gas-liquid separators (14) are connected with the first pump (15), the second pump (16), the third pump (17) and the fourth pump (18) through pipe.

5. A continuous duty ground pump station according to claim 4, wherein: A plurality of gas-liquid separators (14) are installed in the bottom of a plurality of gas-liquid separators (14), and a plurality of gas-liquid separators (14) are connected with the first pump (15), the second pump (16), the third pump (17) and the fourth pump (18) through pipe.

6. A continuous duty ground pump station according to claim 1, wherein: Two air inlet ports (1) are fixedly connected in the top of two air inlet pipe (20).

7. A continuous duty ground pump station according to claim 1 wherein: The first pump (15), the second pump (16), the third pump (17) and the fourth pump (18) are controlled by PLC program.

8. A continuous duty ground pump station according to claim 3, wherein: The fourth pump (18) is installed with liquid adding pipe (13) in the top, and the liquid adding pipe (13) is connected with a plurality of connecting pipes (8) and a plurality of adapter pipes (21).

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