Blowout preventer for drilling and hole sealing
By designing a drilling and sealing and blowing device including sealed pipe, gas slag separator and short-joint pipe, the problems of spraying and dust control during downhole drilling are solved, safe production and health effects are achieved, and labor costs are saved.
Patent Information
- Application Number
- CN202421747728.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-07-23
AI Technical Summary
During the underground drilling process, there is danger of spray holes and dust that cannot be effectively controlled, resulting in the drilling slag affecting underground production and employee health.
A drilling and sealing hole-proof spray device is designed, including a sealing pipe, a slag separator and a short-joint pipe. A wool felt pad is installed in the sealing pipe. The drill rod can rotate simultaneously after passing through these parts. The sealing pipe seals the outer periphery of the drill rod to achieve effective control of spray holes and dust.
The device can effectively close the drilling holes, prevent gas from spraying out, and introduce drilling slag into the slag discharge pipeline, reduce dust concentration, improve downhole production safety and health level, and save labor costs.
Smart Images
Figure CN222782622U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a drilling hole sealing and blowout prevention device, belonging to the technical field of drilling equipment. Background Art
[0002] During the drilling process underground, there is a risk of blowouts, the dust generated by drilling cannot be controlled, and drill cuttings seriously affect civilized production underground and harm the health of workers. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a drilling hole sealing and blowout prevention device to solve the technical problems existing in the above-mentioned prior art.
[0004] The technical solution adopted by the utility model is: a drilling hole sealing and blowout prevention device, comprising a sealing tube, a gas-slag separator and a short connecting pipe connected in sequence, a wool felt pad is arranged inside the sealing tube, and the end of the sealing tube away from the gas-slag separator is sealed by a nylon flat pad and a pressure cover; the short connecting pipe is placed in the drill hole, the drill rod passes through the sealing tube, the gas-slag separator and the short connecting pipe and then extends into the drill hole, the sealing tube is rotatably connected to the gas-slag separator; the sealing tube rotates synchronously with the drill rod, and the sealing tube seals the outer periphery of the drill rod.
[0005] Preferably, the outer periphery of one end of the sealing tube close to the gas-slag separator is transmission-connected with a bearing seat, the drill rod passes through the bearing seat and can drive the sealing tube to rotate, and the bearing seat is fixedly connected to the gas-slag separator.
[0006] Preferably, the bearing seat and the gas-slag separator are connected via a flange.
[0007] Preferably, the wool felt pad is provided with two or more layers, and the thickness of each layer is 20-30 mm.
[0008] Preferably, an exhaust pipe and a slag discharge pipe are provided on the gas-slag separator, and a dust reduction water pipe is provided on the top of the gas-slag separator.
[0009] Beneficial effects of the utility model:
[0010] 1. Compared with the prior art, in the utility model, when the drill rod rotates, the sealing tube and the drill rod rotate together, and the wool felt pad can wrap and seal the drill rod to achieve the effect of sealing the hole, so that the ejected gas can smoothly enter the extraction pipeline, and the drill slag can enter the slag discharge pipeline for discharge; the utility model can be well combined with the drilling rig, solves the risk of spray holes during drilling, reduces the dust generated during drilling, and facilitates the removal of coal slag generated by drilling; it is beneficial to civilized production underground and the health of employees.
[0011] 2. Compared with the prior art, the utility model has the advantages of small size, convenient transportation, high flexibility, easy operation, and remarkable effect of preventing blowout and reducing slag.
[0012] 3. Compared with the existing technology, after the utility model is put into use, it saves 1 labor force. Calculated based on the average wage of 300 yuan / worker, the labor cost saved is: 300x365x1=109,000 yuan. According to the calculation of 3 mining areas in a mine, about 3 workers are needed, and the total labor cost can be saved: 10.9×3=328,000 yuan. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the entire structure of the utility model.
[0014] The reference numerals in the drawings of the specification include: gas-slag separator 10, exhaust pipe 11, dust suppression water pipe 12, slag discharge pipe 13, flange 20, bearing seat 30, sealing pipe 40, wool felt pad 41, nylon flat pad 42, pressure cover 43, short pipe 50. DETAILED DESCRIPTION
[0015] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0016] Embodiment 1:
[0017] A drilling and sealing blowout prevention device, such as Figure 1 As shown, it includes a sealing tube 40, a gas-slag separator 10 and a short pipe 50 connected in sequence from left to right, a circular wool felt pad 41 is arranged inside the left end 40 of the sealing tube, the wool felt pad 41 is arranged in three layers, each layer is 20 mm thick, and circular nylon flat pads 42 are arranged at both ends of each layer of the wool felt pad 41, and the nylon flat pad 42 on the far left is compressed and sealed by a circular pressure cover 43; the outer periphery of the right end of the sealing tube 40 is transmission-connected with a bearing seat 30, the right end of the bearing seat 30 is connected to the gas-slag separator 10 by a flange 20, and the gas-slag separator 10 and the short pipe 50 are connected by a flange 20; the right end of the short pipe 50 is placed in the borehole, the drill rod passes through the sealing tube 40, the gas-slag separator 10 and the short pipe 50 from left to right and then extends into the borehole, the drill rod can drive the sealing tube 40 to rotate synchronously, and the sealing tube 40 seals the outer periphery of the drill rod. An exhaust pipe 11 and a slag discharge pipe 13 are provided on the gas-slag separator 10 , and a dust reduction water pipe 12 is provided on the top of the gas-slag separator 10 .
[0018] When the drill pipe rotates, the sealing tube 40 rotates together with the drill pipe, and the wool felt pad 41 can wrap and seal the drill pipe to achieve the effect of sealing the hole, allowing the gas ejected from the borehole to smoothly enter the extraction pipeline, and the drilling slag enters the slag discharge pipeline for discharge.
[0019] The above description is only a specific implementation method of the present utility model, but the protection scope of the present utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present utility model, which should be included in the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.
Claims
1. A drilling and sealing blowout prevention device, characterized in that: It comprises a sealing tube, an air-slag separator and a short pipe connected in sequence, wherein a wool felt pad is arranged inside the sealing tube, and one end of the sealing tube away from the air-slag separator is sealed by a nylon flat pad and a pressure cap; the short pipe is put into a borehole, and a drill rod passes through the sealing tube, the air-slag separator and the short pipe and then extends into the borehole, and the sealing tube is rotatably connected to the air-slag separator; the sealing tube rotates synchronously with the drill rod, and the sealing tube seals the outer periphery of the drill rod.
2. A drilling and sealing blowout prevention device according to claim 1, characterized in that: The outer periphery of one end of the sealing tube close to the gas-slag separator is transmission-connected with a bearing seat, the drill rod passes through the bearing seat and can drive the sealing tube to rotate, and the bearing seat is fixedly connected to the gas-slag separator.
3. A drilling hole sealing and blowout prevention device according to claim 2, characterized in that: The bearing seat and the gas-slag separator are connected via a flange.
4. The drilling and sealing blowout prevention device according to claim 1, characterized in that: The wool felt pad is arranged in two or more layers, and the thickness of each layer is 20-30 mm.
5. The drilling and sealing blowout prevention device according to claim 1, characterized in that: An exhaust pipe and a slag discharge pipe are arranged on the gas-slag separator, and a dust reduction water pipe is arranged on the top of the gas-slag separator.