CN215408747U

CN215408747U - Drainage drilling integrated hole sealing and connecting device

Info

Publication number: CN215408747U
Application number: CN202121304485.5U
Authority: CN
Inventors: 王辉; 李凯; 王张科; 姚明柱; 张新仓
Original assignee: Shaanxi Coal Mining Hancheng Mining Co Ltd
Current assignee: Shaanxi Coal Mining Hancheng Mining Co Ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2022-01-04
Anticipated expiration: 2031-06-10

Abstract

The utility model relates to an integrated hole sealing and connecting device for an extraction drill hole, wherein a single drill hole sealing pipe is connected to a gas drainage pipeline through a hose, a valve with an air hole and a spigot-and-socket type pipeline joint, an automatic water drainage device is installed at every 50m on the gas drainage pipeline and is connected to branch pipelines of each group of drainage pipes, and then the branch pipelines are connected to a system gas drainage main pipeline and lead to a ground gas pump station, so that the integrated hole sealing and connecting device is realized, the extraction pipeline joint is reduced, the pipeline air leakage is avoided, and the extraction pipeline is not easy to denature, disjoint and leak.

Description

Drainage drilling integrated hole sealing and connecting device

Technical Field

The utility model relates to the field of underground gas extraction, in particular to a hole connecting device for a mine gas extraction pipeline.

Background

The current mine underground drilling construction adopts

The pipeline is connected, and because later period lacks personnel to the pipeline maintenance, drain, and the tunnel that leads to such factors as ground pressure warp, the time has been of a specified duration and has leaded to the gas drainage effect poor, has the phenomenon that many pipeline connections are not real, disjointed, gas leakage, water storage, suppress pressure, seriously restricts gas drainage efficiency, and the working face gas drainage is difficult to reach standard, and the outburst prevention work of mine can not be effectively carried out, threatens practitioner life safety in the pit. Aiming at the phenomena of easiness, disjointing and air leakage of an extraction pipeline, the connection reliability of the extraction pipeline is mainly considered to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an integrated hole sealing and connecting device for an extraction drill hole, which reduces the number of joints of an extraction pipeline, avoids the leakage of the pipeline and ensures that the extraction pipeline is not easy to denature, disjoint and leak.

The utility model adopts the technical scheme that the integrated hole sealing and connecting device for the extraction drill hole is characterized in that a single drill hole sealing pipe is connected to a gas drainage pipeline through a hose, a valve with a gas measuring hole and a spigot-and-socket type pipeline joint, an automatic water drainage device is installed at every 50m of the gas drainage pipeline and is connected to a branch pipeline of the drainage pipe, and the branch pipeline of the drainage pipe is directly connected to a main pipeline of the gas drainage pipe, so that the integrated hole sealing and connecting device is realized.

Furthermore, a water inlet pipe and a negative pressure balance pipe of the automatic water drainage device are both communicated with the gas pipeline, and a water inlet valve and a water drainage valve are installed on the automatic water drainage device.

Furthermore, all the connecting points adopt a bound hoop and a special sealing gasket to ensure that the joint is airtight.

The utility model has the beneficial effects that:

1. the extraction pipeline orifice section after transformation adopts the mode of hose connection, reduces the pipeline because of the disjointing that pressure factors such as tunnel deformation lead to, leak gas the phenomenon to utilize the clamp to connect, reduce the pipeline joint, guarantee the reliability of pipe connection, effectively reduce the emergence of the pipeline gas leakage condition.

2. After the coal seam drilling hole is influenced by mining stress, the sleeve connecting hole device can reduce air leakage generated by equipment deformation to a certain extent; the device's use has standardized the construction of this coal seam drilling of ore deposit, has improved the overall standardization level of disaster recovery control.

Drawings

FIG. 1 is a schematic diagram of the present invention.

Fig. 2 is a schematic diagram of the field practical application.

The reference numbers illustrate: a hole sealing pipe 1; a hoop 2; a hose 3; a valve 4 with a measuring air hole; a spigot-and-socket quick coupling 5; a gas drainage pipeline 6; an automatic water discharger 7; a branch pipeline 8 of the drainage pipeline; a gas drainage main pipeline 9.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples of the present invention without any inventive step, are within the scope of the present invention.

As shown in fig. 1 and 2, in the integrated hole sealing and connecting device for the extraction drill hole of the embodiment, a single drill hole sealing pipe 1 is connected to a gas drainage pipeline 6 through a hose 3, a valve 4 with a gas measurement hole and a spigot-and-socket type pipeline joint 5, and an automatic water drainage device 7 is installed at every 50m of the gas drainage pipeline 6.

The automatic water discharger is used in coal mine gas drainage pipeline under negative pressure and is suitable for automatic drainage of main pipe, main pipe and branch pipe of gas drainage and utilization system.

During gas drainage through a drill hole, underground water flows into a drainage pipeline along the drill hole, and if the water quantity of the gas pipeline is large, the effective section of a local pipeline is obviously reduced, even the drainage pipeline is blocked, and the drainage effect is seriously influenced, so that the problem of water blockage of the pipeline in the field drainage process is very prominent, and the key equipment for solving the problem of water blockage is the water drainage device.

The working principle is that the water inlet pipe and the negative pressure balance pipe of the automatic water drainage device 7 are both communicated with the gas drainage pipeline 6, the negative pressure balance pipe and the water inlet valve are opened, the water drainage valve is in a closed state under the action of negative pressure of the gas drainage pipeline 6, at the moment, water in the gas drainage pipeline 6 can flow into the automatic water drainage device 7 through the water inlet pipe, a floater in the automatic water drainage device 7 rises along with the rise of the water level, the cylinder of the automatic water drainage device 7 is communicated with the atmosphere, and the water inlet valve is closed. When the water quantity reaches a certain degree, the water drain valve is opened, and water begins to drain under the action of the hydrostatic pressure of accumulated water. The water discharge speed depends on the height of the liquid level in the barrel and the diameter of the water discharge pipe. Along with the continuous outflow of water, the buoy descends to open the negative pressure balance pipe, the automatic water discharger 7 is communicated with the gas drainage pipeline 6 again, the atmospheric valve and the water discharge valve are closed under the action of atmospheric pressure, and the buoy is at the initial position again. The automatic water discharge is realized by repeating the steps.

A valve 4 with an air measuring hole is reserved in a single drilling hole and is connected through a clamp 2, so that pipeline joints are reduced, the reliability of pipeline connection is guaranteed, and the occurrence of the air leakage condition of the pipeline is effectively reduced.

The gas is connected to each group of drainage pipe branch pipelines 8 through a hole sealing pipe 1, a hose 3, a gas measuring hole valve 4, a gas drainage pipe 6 and an automatic water drainage device 7 which are drilled in the coal body, and then a system gas drainage main pipeline 9 is connected to a ground gas pump station, so that an integrated hole sealing connection hole is realized.

Before the pipeline is installed, whether sundries exist in the pipeline or not is checked in advance, whether sand holes or leaks exist inside and outside the pipeline or not is checked, after the pipeline is checked completely, butt joint installation can be carried out, and the gas extraction pipeline must be free of gas leakage.

When the pipelines are butted, the pipelines are fixed by using a uniform clamp, the clamps of different models are strictly forbidden to be used together, the rubber pads between the butted points of the two pipelines are complete and correct, and the bolts at the joint of every two flange plates are required to be fastened together in the same direction, so that the tight connection and the air leakage prevention of the joint are ensured.

Claims

1. The utility model provides an even hole device of drainage drilling integral type hole sealing, characterized by single drilling hole sealing pipe (1) is connected to gas drainage pipeline (6) through hose (3), area gas measurement hole valve (4), socket joint formula pipe coupling (5), every 50m department installation automatic water drain ware (7) on gas drainage pipeline (6), automatic water drain ware (7) are connected to drainage pipe branch pipeline (8), by drainage pipe branch pipeline (8) direct access gas drainage main line (9), realize that the hole is even in integral type hole sealing.

2. The extraction and drilling integrated hole sealing and connecting device as claimed in claim 1, wherein a water inlet pipe and a negative pressure balance pipe of the automatic water discharger (7) are both communicated with a gas pipeline, and a water inlet valve and a water discharge valve are mounted on the automatic water discharger (7).

3. The extraction and drilling integrated hole sealing connecting hole device as claimed in claim 1, wherein all connecting points are provided with bound clamps (2) and special sealing gaskets, so that the joints are airtight.