Gas-water separation device for detecting coal bed gas in goaf

Abstract

The gas-water separation device comprises a gas storage tank body, a gas cavity is arranged in the gas storage tank body, and one end of the gas storage tank body is open. The bottom of the gas storage tank body is provided with a water accumulation cavity used for storing condensate water, the bottom of the water accumulation cavity is provided with a water discharging port, the water discharging port is connected with a water discharging hose and used for discharging accumulated water, and the output end of the water discharging hose is connected into the water storage tank. A differential pressure gauge connector is arranged on the side, close to the extraction opening, of the top of the gas storage tank body and connected with a differential pressure gauge through a pipeline, one end of the differential pressure gauge is installed at one end of the gas storage tank body through a fixing support, the extraction opening and the differential pressure gauge connector are each provided with a first control valve, and the first control valves are electrically connected with the single-chip microcomputer. According to the utility model, condensed water accumulated in the observation pipe can be discharged in time, and gas in a gas layer can be subjected to water absorption treatment, so that the authenticity and reliability of detection data of sampled gas are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas detection technical field especially relates to a goaf coal bed gas detection is with gas water separation device. BACKGROUND

[0002] The goaf coal bed gas needs to sample and analyze the gas composition and concentration in the coal gas layer before mining, which is also an effective means to prevent spontaneous combustion in the goaf. The quality of sampling directly affects the analysis effect, thereby affecting the authenticity of the prediction. The existing sampling measures mainly install a gate valve on the closed observation tube, use the detector to cooperate with the rubber tube to check and analyze the goaf gas sampling in the closed observation tube. However, due to the high temperature and high humidity of the gas in the goaf of the coal mine, the external environment temperature is relatively low, which is easy to form condensate water in the observation tube, increase the difference between the inspection data and the true data, and even when the water amount is large, the gas sample cannot be taken. UTILITY MODEL CONTENT

[0003] In order to solve the technical problems mentioned in the background, the utility model provides a goaf coal bed gas detection gas water separation device.

[0004] The utility model adopts the following technical scheme: a goaf coal bed gas detection gas water separation device is fixedly connected with a goaf closed observation tube, comprising a gas storage tank body; a gas cavity is arranged in the gas storage tank body; one end of the gas storage tank body is open; the opening is threadedly connected with the observation tube; a water accumulation chamber for storing condensate water is arranged at the bottom of the gas storage tank body; a lower water outlet is arranged at the bottom of the water accumulation chamber; the lower water outlet is connected with a water discharge hose for discharging the accumulated water; the output end of the water discharge hose is connected to a water storage tank; an extraction port is arranged at the top end of the gas storage tank body; the extraction port is connected with an extraction pipeline; a differential pressure gauge connecting port is arranged on one side of the gas storage tank body close to the extraction port; the differential pressure gauge connecting port is connected with a differential pressure gauge through a pipeline; the differential pressure gauge is installed on one end of the gas storage tank body through a fixed support; first control valves are arranged at the extraction port and the differential pressure gauge connecting port; the first control valves are electrically connected with a single-chip microcomputer.

[0005] Further, a sealing ring is arranged at the threaded connection between the gas storage tank body and the observation tube.

[0006] Further, a water level detector is arranged in the water accumulation chamber; a second control valve is arranged at the top end of the water accumulation chamber; the water level detector, the second control valve and the single-chip microcomputer are electrically connected.

[0007] Further, a filter screen with a water absorption material is arranged at one end of the gas cavity close to the extraction port.

[0008] Compared with the prior art, the utility model has the advantages that:

[0009] The gas-water separation device for goaf coal bed gas detection can timely discharge the condensed water accumulated in the observation tube, and carries out water absorption treatment on the coal bed gas, so that the detection data of the sampling gas is real and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a whole structure schematic view of the gas-water separation device for goaf coal bed gas detection.

[0011] Among them:

[0012] 1-observation tube, 2-gas storage tank body, 3-gas cavity, 4-accumulated water chamber, 5-water outlet, 6-drainage hose, 7-extraction port, 8-extraction pipeline, 9-differential pressure gauge connection port, 10-differential pressure gauge, 11-fixed support, 12-first control valve, 13-sealing ring, 14-water level detector, 15-second control valve, 16-filter screen. DETAILED DESCRIPTION

[0013] In the following, in order to facilitate the understanding of the technical scheme of the utility model by those skilled in the art, further description will be made with reference to the drawings. It should be understood that these descriptions are only exemplary, and are not intended to limit the scope of the utility model.

[0014] In the following detailed description, many specific details are set forth in order to provide a thorough understanding of the embodiments of the utility model. However, it is apparent that one or more embodiments can also be implemented without these specific details. In addition, in the following description, the description of well-known structures and techniques is omitted to avoid unnecessary confusion of the concept of the utility model.

[0015] Please refer to Figure 1 The utility model relates to a gas-water separation device for goaf coal bed gas detection, which is used for fixed connection with a goaf sealed observation tube 1. The device comprises a gas storage tank body 2, a gas cavity 3 is arranged in the gas storage tank body 2, and the gas storage tank body 2 is open at one end, which is threadedly connected with the observation tube 1. A sealing ring 13 is arranged at the threadedly connected position of the gas storage tank body 2 and the observation tube 1 to prevent gas leakage. An accumulated water chamber 4 for storing condensed water is arranged at the bottom of the gas storage tank body 2, a water outlet 5 is arranged at the bottom of the accumulated water chamber 4, the water outlet 5 is connected with a drainage hose 6 for discharging accumulated water. The output end of the drainage hose 6 is connected to a water storage tank. An extraction port 7 is arranged at the top end of the gas storage tank body 2. The extraction port 7 is connected with an extraction pipeline 8, a differential pressure gauge connection port 9 is arranged at the side of the top of the gas storage tank body 2 close to the extraction port 7, the differential pressure gauge connection port 9 is connected with a differential pressure gauge 10 through a pipeline for detecting the pressure difference between the inside and outside of the tank body. The differential pressure gauge 10 is installed at one end of the gas storage tank body 2 through a fixed support 11, and the extraction port 7 and the differential pressure gauge connection port 9 are both provided with a first control valve 12, which is electrically connected with a single-chip microcomputer.

[0016] In the implementation, a water level detector 14 is arranged in the water accumulation chamber 4, a second control valve 15 is arranged at the top end of the water accumulation chamber 4, and the water level detector 14 and the second control valve 15 are electrically connected with the single-chip microcomputer. The single-chip microcomputer controls the second control valve 15 to open or close according to the water amount in the water accumulation chamber 4 monitored by the water level detector 14. A filter screen 16 with water absorbing material is arranged at one end of the gas chamber 3 close to the extraction port 7, for water absorbing treatment of the coal gas layer gas, to ensure the authenticity and reliability of the detection data of the sampling gas.

[0017] In conclusion, the gas-water separation device for goaf coal seam gas detection can timely drain the condensed water accumulated in the observation tube, and perform water absorbing treatment on the coal gas layer gas, to ensure the authenticity and reliability of the detection data of the sampling gas.

[0018] The above embodiments only describe the preferred embodiments of the utility model, and do not limit the scope of the utility model. Without departing from the design spirit of the utility model, various modifications and improvements of the technical solutions of the utility model made by those skilled in the art shall fall within the protection scope defined by the claims of the utility model.

Claims

1. A gas-water separation device for detecting coal seam gas in a goaf, fixedly connected with a goaf sealed observation pipe (1), characterized in that, Including gas tank body (2); The gas tank body (2) is provided with gas cavity (3) inside; The gas tank body (2) is open at one end; The opening is threadedly connected with observation tube (1);The bottom of the gas tank body (2) is provided with a water accumulation chamber (4) for storing condensed water;The bottom of the water accumulation chamber (4) is provided with a lower water outlet (5);The lower water outlet (5) is connected with a water discharge hose (6) for discharging accumulated water;The output end of the water discharge hose (6) is connected to a water storage tank;The top of the gas tank body (2) is provided with an extraction port (7);The extraction port (7) is connected with an extraction pipeline (8);The top of the gas tank body (2) is provided with a differential pressure gauge connection port (9) on one side near the extraction port (7);The differential pressure gauge connection port (9) is connected with a differential pressure gauge (10) through a pipeline;The differential pressure gauge (10) is installed at one end of the gas tank body (2) through a fixed support (11);The extraction port (7) and the differential pressure gauge connection port (9) are both provided with a first control valve (12);The first control valve (12) is electrically connected with a single-chip microcomputer.

2. The gas-water separation device for gob coal bed gas detection according to claim 1, characterized in that, The threaded connection between the gas tank body (2) and the observation tube (1) is provided with a sealing ring (13).

3. The gas-water separation device for gob coal bed gas detection according to claim 2, characterized in that, The water accumulation chamber (4) is provided with a water level detector (14) inside; The top of the water accumulation chamber (4) is provided with a second control valve (15);The water level detector (14) and the second control valve (15) are electrically connected with a single-chip microcomputer.

4. The gas-water separation device for gob coal bed gas detection according to claim 3, characterized in that, The gas cavity (3) is provided with a filter screen (16) with water absorbing material at one end near the extraction port (7).

Images