Novel blowout prevention hole device

Abstract

The utility model discloses a novel blowout prevention hole device which comprises a main pipe, one end of the main pipe is connected with a flange plate, the periphery of the main pipe is sleeved with a sleeve, and the upper end of the part, located between the flange plate and the sleeve, of the main pipe is connected with a gas extraction pipe. The lower end of the part, located between the flange plate and the sleeve, of the main pipe is connected with a slag discharging pipe, the two ends of the sleeve are closed, and the upper end of the sleeve is connected with a water inlet pipe. A plurality of through holes are evenly formed in the periphery of the part, located in the sleeve, of the main pipe in the circumferential direction. A cone is connected to the portion, located on the side, away from the flange plate, of the sleeve on the main pipe in a sleeved mode, one end of the cone is fixed to the sleeve, and the other end of the cone is fixed to the main pipe. According to the utility model, the gas can be prevented from exceeding the limit in the roadway, and the dust falling effect can be achieved.

Description

Technical Field

[0001] The utility model relates to a novel anti-blowout hole device, belonging to the technical field of drilling equipment. Background Art

[0002] During the drilling process in the coal mine underground, with the increase of the mining depth of the mine and the extension of the mining and excavation work, the gas content in the coal seam gradually increases and the pressure gradually increases. During the construction of the gas drainage borehole, the phenomenon of gas blowout is likely to occur, often resulting in local gas overrun; in addition, the dust generated by drilling floats in the roadway, causing harm to the health of the staff. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a novel anti-blowout hole device to solve the technical problems existing in the above-mentioned prior art.

[0004] The technical solution adopted by the utility model is as follows: a novel anti-blowout hole device, including a main pipe, one end of the main pipe is connected with a flange, the outer circumference of the middle part of the main pipe is sleeved with a sleeve, the upper end of the part of the main pipe between the flange and the sleeve is connected with a gas extraction pipe, the lower end of the part of the main pipe between the flange and the sleeve is connected with a slag discharge pipe, both ends of the sleeve are closed, and the upper end of the sleeve is connected with a water inlet pipe; a plurality of through holes are evenly arranged along the circumferential direction on the outer circumference of the part of the main pipe located inside the sleeve; a cone is sleeved on the part of the main pipe on the side of the sleeve away from the flange, one end of the cone is fixed to the sleeve, and the other end of the cone is fixed to the main pipe; the outer diameter of the end of the cone close to the sleeve is the same as the outer diameter of the sleeve, and the outer diameter of the other end of the cone is the same as the outer diameter of the main pipe.

[0005] Preferably, the flange is a 4-inch flange.

[0006] Preferably, the main pipe is a DN100 pipe with a length of 1000 - 1100 mm.

[0007] Preferably, the sleeve is a DN150 pipe with a length of 200 - 210 mm.

[0008] Preferably, the diameter of the through hole is 3 - 4 mm, and the hole pitch is 7 - 8 mm.

[0009] Preferably, the upper end of the water inlet pipe is connected with a quick joint.

[0010] Preferably, the length of the cone is 500 - 600 mm.

[0011] Preferably, the lower part of the slag discharge pipe bends downward to the side away from the flange, and the bending angle is an obtuse angle.

[0012] Preferably, the outer periphery of the vertebral body is wound with a tape for sealing the gap between the drilling hole and the vertebral body.

[0013] Advantages of the utility model:

[0014] 1. Compared with the prior art, during the drilling process of the utility model, the gas extraction pipe is connected to the main pipeline with negative pressure. When a large amount of gas gushes out, the gate valve between the main pipeline and the gas extraction pipe is opened to extract the gas, avoiding the gas from exceeding the limit in the roadway.

[0015] 2. Compared with the prior art, the dust is settled by the water ring formed by water spray in the utility model, and the dust generated during the drilling process can be effectively collected and discharged with water, avoiding the dust from floating in the roadway and reducing the harm to the staff.

[0016] 3. Compared with the prior art, the overall weight of the utility model is only 15 kg, which is convenient for the workers to operate and reduces the labor intensity of the workers.

[0017] 4. The utility model has been used in multiple roadways in each mining area and development area of a certain mine, and the effect is good. Description of the drawings

[0018] Figure 1 is the overall structure diagram of the utility model.

[0019] The reference numerals in the drawings of the specification include: main pipe 1, gas extraction pipe 2, slag discharge pipe 3, flange 4, through hole 5, sleeve 6, water inlet pipe 7, quick joint 8, vertebral body 9. Detailed implementation manners

[0020] The following further introduces the utility model in combination with the drawings and specific embodiments.

[0021] Embodiment 1:

[0022] A new type of anti-blowout hole device, such as Figure 1As shown in the figure, it includes a main pipe 1. The main pipe 1 is horizontally arranged in the left-right direction. The main pipe 1 is a DN100 pipe with a length of 1000 mm. A flange 4 is connected to the left end of the main pipe 1. The flange 4 is a 4-inch flange. The left end of the main pipe 1 is connected to the drill through the flange 4. A sleeve 6 is sleeved on the outer periphery of the middle part of the main pipe 1. Both ends of the sleeve 6 are closed. The sleeve 6 is a DN150 pipe with a length of 200 mm. A gas extraction pipe 2 is connected to the upper end of the part of the main pipe 1 between the flange 4 and the sleeve 6. The inner diameter of the gas extraction pipe 2 is 90 mm and the length is 200 mm. The gas extraction pipe 2 is used to extract the ejected gas. A slag discharge pipe 3 is connected to the lower end of the part of the main pipe 1 between the flange 4 and the sleeve 6. The inner diameter of the gas extraction pipe 2 is 90 mm. The lower part of the slag discharge pipe 3 bends downward to the right with a bending angle of 135°. The slag discharge pipe 3 is used for discharging slag and water. A water inlet pipe 7 is connected to the upper end of the sleeve 6. A quick connector 8 is connected to the upper end of the water inlet pipe 7. A plurality of through holes 5 are evenly arranged in the circumferential direction on the outer periphery of the part of the main pipe 1 located inside the sleeve 6. The diameter of the through holes 5 is 3 mm and the hole pitch is 7 mm. Water is introduced into the inside of the sleeve 6 through the quick connector 8 and the water inlet pipe 7. The water forms a spray-like water ring through the through holes 5 and enters the main pipe 1 to dust the inside of the main pipe 1. The dust is discharged together with the water. In this embodiment, a cone 9 is sleeved on the part of the main pipe 1 located on the right side of the sleeve 6. The length of the cone 9 is 500 mm. The left end of the cone 9 is fixed to the sleeve 6 and the right end of the cone 9 is fixed to the main pipe 1. The outer diameter of the left end of the cone 9 is the same as the outer diameter of the sleeve 6. The outer diameter of the right end of the cone 9 is the same as the outer diameter of the main pipe 1. The outer periphery of the cone 9 is wound with tape. The cone 9 is provided to facilitate the sealing of the drilling opening, and the tape is provided to seal the gap between the drilling and the cone 9.

[0023] During use, the main pipe 1 is sleeved on the outer periphery of the drill pipe of the drill and the left end of the main pipe 1 is fixed to the drill. Then, the cone 9 is blocked at the drilling opening to seal the drilling. During the process of the drill pipe drilling, the gas ejected from the inside of the drilling is extracted by the gas extraction pipe 2, and the dust is washed down by water and discharged together with the slag through the slag discharge pipe 3.

[0024] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claimed rights.

Claims

1. A new type of anti-spray hole device, characterized in that: The utility model comprises a main pipe, one end of which is connected with a flange, a sleeve is sleeved on the outer periphery of the middle part of the main pipe, the upper end of the part of the main pipe located between the flange and the sleeve is connected with a gas extraction pipe, the lower end of the part of the main pipe located between the flange and the sleeve is connected with a slag discharge pipe, both ends of the sleeve are closed, and the upper end of the sleeve is connected with a water inlet pipe; a plurality of through holes are evenly opened on the outer periphery of the part of the main pipe located in the sleeve along the circumferential direction; a cone is sleeved on the part of the main pipe located on the side of the sleeve away from the flange, one end of the cone is fixed to the sleeve, and the other end of the cone is fixed to the main pipe; the outer diameter of the end of the cone close to the sleeve is consistent with the outer diameter of the sleeve, and the outer diameter of the other end of the cone is consistent with the outer diameter of the main pipe.

2. A novel anti-spray hole device according to claim 1, characterized in that: The flange is a 4-inch flange.

3. A novel anti-spray hole device according to claim 1, characterized in that: The main pipe is a DN100 pipe with a length of 1000-1100 mm.

4. A novel anti-spray hole device according to claim 1, characterized in that: The sleeve is a DN150 pipe with a length of 200-210 mm.

5. A novel anti-spray hole device according to claim 1, characterized in that: The diameter of the through holes is 3-4 mm, and the hole spacing is 7-8 mm.

6. A novel anti-spray hole device according to claim 1, characterized in that: The upper end of the water inlet pipe is connected with a quick connector.

7. A novel anti-spray hole device according to claim 1, characterized in that: The length of the vertebral body is 500-600 mm.

8. A novel anti-spray hole device according to claim 1, characterized in that: The lower part of the slag discharge pipe is bent downwardly away from the flange, and the bending angle is an obtuse angle.

9. A novel anti-spray hole device according to claim 1, characterized in that: An adhesive tape is wound around the outer periphery of the vertebral body, and the adhesive tape is used to seal the gap between the drill hole and the vertebral body.

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