CN105909301A - Intelligent slag discharging and water discharging device and system for gas extraction pipeline - Google Patents

Abstract

The invention discloses an intelligent slag discharge and water discharge device and system for a gas drainage pipeline. Signal processor; the top of the water slag storage tank is provided with a water slag inlet, and the bottom is provided with a water slag discharge port. The water slag diversion pipe is funnel-shaped. The slag discharge port is connected to the slag discharge pump through the solenoid valve Ⅰ; the slag discharge pump is connected to the pressure air pipeline through the solenoid valve Ⅱ; the water level monitor is set in the slag storage tank and connected to the signal processor; the signal processor Connected with solenoid valve I and solenoid valve II. An intelligent slag discharge and water discharge system is formed by setting multiple slag discharge and water discharge devices on the main drainage road, and the system shares a signal processor. The invention has the advantages of simple structure, safety and intelligence, sufficient slag discharge power, and is suitable for high negative pressure extraction and high water content coal seam drilling.

Description

An intelligent slag discharge device and system for gas drainage pipeline

technical field

The invention relates to a slag discharge and water discharge device, in particular to an intelligent slag discharge and water discharge device and system for a gas extraction pipeline, belonging to the field of mining equipment.

Background technique

In order to control coal seam gas, a large number of drainage boreholes have been constructed underground in coal mines. Because the coal seam contains a large number of water-conducting fissures, during the extraction process, the water in the coal seam will enter the extraction pipeline through the borehole, and the water mixed with coal chips will easily accumulate in the upstream and bending sections of the pipeline, resulting in It reduces the loss of drainage negative pressure and reduces the drainage efficiency.

For a long time, the accumulated water in the gas drainage pipelines has been drained mainly by manual drainers, which has a large workload and high labor intensity, and cannot achieve the purpose of continuous water release. At present, many types of automatic water release devices have been used in coal mine gas drainage systems, but they have not been fully promoted and applied in mine drainage systems due to the following problems: (1) The water discharge capacity is small, and it is difficult for places with large water accumulation The water discharge efficiency cannot keep up; (2) the service life is short, due to the high degree of calcification of the mine water and the inclusion of mineral coal dust, the precision of the traditional automatic water release device is high, and hard water is easy to cause corrosion and failure of the parts, resulting in the normal operation of the water release device; ( 3) The scope of application is limited. The existing automatic water release device mainly relies on the principle of buoyancy combined with magnetic force to change the pressure state of the inner space of the container to automatically release water. When the negative pressure of the system changes greatly, the automatic water release device cannot work normally, especially It is under the condition of high negative pressure that it is impossible to solve the problem of separation of water slag and gas in the pipeline.

Chinese patent CN203008967U discloses an intelligent discharge device for accumulated water in pipelines, which realizes the functions of accumulated water and waterproofing by controlling a solenoid valve. However, its waterproofing only relies on gravity and has no external slag discharge power, which cannot solve the problem of clogging of drainage valves caused by excessive coal slime precipitation; Control the intake, exhaust and water discharge, but there are problems of control delay and insufficient power for slag discharge.

Contents of the invention

The purpose of the present invention is to provide an intelligent slag discharge and water discharge device for gas drainage pipelines, which can speed up slag discharge and water discharge, improve water discharge capacity, enhance drainage and slag power, and prolong service life.

Another object of the present invention is to provide a system composed of the above-mentioned gas drainage pipeline intelligent slag discharge and water discharge device.

In order to achieve the above purpose, an intelligent slag discharge device for gas drainage pipeline according to the present invention includes a water slag diversion pipe, a water slag storage tank, a water level monitor, a water slag discharge pump, a solenoid valve I, a solenoid valve II and Signal processor; the top of the water slag storage tank is provided with a water slag inlet, the bottom of the water slag storage tank is provided with a water slag discharge port, the water slag diversion pipe is funnel-shaped, and the water slag diversion pipe The upper end is connected with the gas extraction pipeline, the lower end of the water slag diversion pipe is connected with the water slag inlet, and the water slag discharge port is connected with the water slag discharge pump through the solenoid valve I; the water slag discharge pump is connected through the electromagnetic valve I. The valve II is connected with the compressed air pipeline, and the water level monitor is vertically installed in the slag storage tank, and is connected with the signal processor through the signal transmission line; the signal processor is connected with the solenoid valve I and the solenoid valve through the signal transmission line. II connected.

The air source pressure of the compressed air pipeline is 0.1-0.6 MPa, preferably 0.2 MPa.

The upper part of the slag storage tank is a cylinder, and the lower part is a cone, and the bottom areas of the cylinder and the cone are equal.

The control principle of the intelligent slag discharge and water discharge device for the above-mentioned gas drainage pipeline is as follows: when the water level monitor shows that the water level in the water slag storage tank is higher than the preset water level height H1, the signal processor opens the solenoid valve Ⅰ and solenoid valve Ⅱ; when the water level When the monitor shows that the water level in the slag storage tank is lower than the preset water level H2, the signal processor first closes the solenoid valve II, and then closes the solenoid valve I.

An intelligent slag discharge and water discharge system for gas drainage pipelines. At least three gas drainage pipeline slag discharge and water discharge devices are installed on the main gas drainage pipeline. Valve II are all connected to the same signal processor. Its control principle is: when the N1 ^# water level monitor shows that the water level in the N1 ^# slag storage tank is higher than the preset water level height H1, the signal processor simultaneously opens N1 ^# solenoid valve Ⅰ and N1 ^# solenoid valve Ⅱ; when N1 ^# When the water level monitor shows that the water level in the slag storage tank is lower than the preset water level H2, the signal processor first closes the N1 ^#solenoid valve II, and then closes the N1 ^#solenoid valve I.

The present invention has the following beneficial effects:

1) By increasing the cross-sectional area of the water slag inlet, water and coal slag can enter the water slag storage tank smoothly under high negative pressure conditions, especially suitable for high negative pressure drainage and high water content coal seam drilling;

2) Monitor the water level in the water slag storage tank through the signal processor, automatically control the opening of two solenoid valves, realize intelligent drainage and slag discharge, simple and reliable structure, and high efficiency;

3) The intelligent water slag discharge pump is adopted, which has sufficient slag discharge power, fast water discharge speed and strong water discharge capacity, and the power comes from the underground compressed air system, which is safe and reliable.

Description of drawings

Fig. 1 is a structural schematic diagram of an intelligent gas drainage pipeline intelligent slag discharge device of the present invention;

Fig. 2 is a schematic diagram of an intelligent slag discharge system for gas drainage pipelines according to the present invention.

In the figure: 1-water slag diversion pipe; 2-water slag storage tank; 3-water level monitor; 4-solenoid valve Ⅰ; 5-solenoid valve Ⅱ; 6-water slag discharge pump; 7-signal processor; 8 - water slag inlet; 9 - water slag discharge outlet; 10 - gas drainage pipeline; 11 - compressed air pipeline.

detailed description

The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

As shown in Figure 1, an intelligent gas drainage pipeline intelligent slag discharge device of the present invention includes a water slag diversion pipe 1, a water slag storage tank 2, a water level monitor 3, a water slag discharge pump 6, and a solenoid valve I4 , solenoid valve II 5 and signal processor 7;

The top of the water slag storage tank 2 is provided with a water slag inlet 8, the bottom of the water slag storage tank 2 is provided with a water slag discharge port 9, and the upper part of the water slag storage tank 2 is a cylinder with a diameter of 1.2m , the height is 0.8m, the lower part is a cone, the diameter is also 1.2m, and the height of the whole tank is 1.6m; The road 10 is connected, the lower end of the water slag guide pipe 1 is connected with the water slag inlet 8, and the water slag discharge port 9 is connected with the water slag discharge pump 6 through the solenoid valve I4. The water slag discharge pump 6 uses the gas on the downhole compressed air pipeline as power, and is connected with the compressed air pipeline 11 through the solenoid valve II5. The pressure of the gas source used is 0.1-0.6 MPa, which is 0.2 MPa in this embodiment. By increasing the cross-sectional area of the water slag inlet, water and coal slag can smoothly enter the water slag storage tank 2 under high negative pressure conditions.

The water level monitor 3 is vertically arranged in the water slag storage tank 2 and connected to the signal processor 7 through a signal transmission line. The signal processor 7 is connected with the solenoid valve I4 and the solenoid valve II5 through a signal transmission line. The water level monitor 3 is used to detect the water level in the water slag storage tank 2. Both the solenoid valve I4 and the solenoid valve II5 are controlled by the signal processor 7, and can be opened and closed automatically according to the water level in the water slag storage tank 2 to realize gas drainage Intelligent discharge of accumulated water in pipelines.

The control principle is: when the water level monitor 3 shows that the water level in the slag storage tank 2 is higher than 1.4m, the signal processor 7 opens the solenoid valve Ⅰ4 and the solenoid valve Ⅱ5, and the high-pressure air source drives the slag discharge pump 6 to run. Discharge the cinder in the tank, especially the cinder in the cone; when the water level monitor 3 shows that the water level in the slag storage tank 2 is lower than 0.3m, the signal processor 7 first closes the solenoid valve II5, and at this time the slag discharge pump 6 stops Running, the water in the pipeline still flows out a small amount by inertia, and the solenoid valve Ⅰ4 is closed after 5s.

In order to build an intelligent slag discharge and water drainage system for gas drainage pipelines, at least three gas drainage pipeline slag discharge and water discharge devices are installed on the main gas drainage pipeline. In this embodiment, 30 slag discharge and water discharge devices with a distance of 50m are installed. The water level monitor, 30 solenoid valves I and 30 solenoid valves II are all connected with the same signal processor. The control principle is: when the N1 ^# water level monitor shows that the water level in the N1 ^# water slag storage tank is 1.4m higher than the preset water level, the signal processor simultaneously turns on the N1 ^# solenoid valve Ⅰ and N1 ^# solenoid valve Ⅱ, at this time The high-pressure air source drives the slag discharge pump to run, and discharges the cinder in the tank, especially the cinder located in the cone; when the N1 ^# water level monitor shows that the water level in the slag storage tank is 0.3m lower than the preset water level, the signal processor first Close N1 ^# solenoid valve Ⅱ, and then close N1 ^# solenoid valve Ⅰ. N2 ^# and other 29 slag discharge and water discharge devices have the same working mode as N1 ^# slag discharge and water discharge device, and start working at the same time. The signal processor can simultaneously control the work of 30 intelligent slag discharge and water discharge devices, realizing efficient control. The intelligent small water slag discharge pump is adopted, and the slag discharge power is sufficient, and the power comes from the underground compressed air system, which is safe and reliable.

Claims (5)

1. a methane gas extraction pipeline intelligence deslagging jettison gear, it is characterised in that include grain slag mozzle (1), Grain slag storage tank (2), water level monitor (3), grain slag emptying pump (6), electromagnetic valve I (4), electromagnetic valve II And signal processor (7) (5)；Described grain slag storage tank (2) top is provided with grain slag entrance (8), institute Grain slag storage tank (2) bottom stated is provided with grain slag floss hole (9), and described grain slag mozzle (1) is in leakage Bucket-shaped, grain slag mozzle (1) upper end connects with methane gas extraction pipeline (10), grain slag mozzle (1) lower end Connecting with described grain slag entrance (8), described grain slag floss hole (9) passes through electromagnetic valve I (4) and institute The grain slag emptying pump (6) stated is connected；Described grain slag emptying pump (6) is by electromagnetic valve II (5) and pressure wind Pipeline (11) is connected；Described water level monitor (3) is vertically arranged in grain slag storage tank (2), and passes through Signal transmssion line is connected with signal processor (7)；Described signal processor (7) by signal transmssion line with Electromagnetic valve I (4) is connected with electromagnetic valve II (5).

Methane gas extraction pipeline intelligence deslagging jettison gear the most according to claim 1, it is characterised in that The bleed pressure of described air line (11) is 0.1～0.6MPa.

Methane gas extraction pipeline intelligence deslagging jettison gear the most according to claim 2, it is characterised in that The bleed pressure of described air line (11) is 0.2MPa.

4. according to the methane gas extraction pipeline intelligence deslagging jettison gear described in any one of claims 1 to 3, its Being characterised by, described grain slag storage tank (2) top is cylinder, and bottom is cone, described cylinder The floor space of body and described cone is equal.

5. a methane gas extraction pipeline intelligence deslagging drainage system, it is characterised in that: at gas pumping main line On the methane gas extraction pipeline intelligence deslagging jettison gear described at least three claim 1 is set, each described Water level monitor (3), electromagnetic valve I (4) and electromagnetic valve II (5) on deslagging jettison gear are all with same Signal processor (7) is connected.