Anti-seepage drainage device for gas extraction drilling construction
By adding sealing pads and water connection funnels at the tail of the anti-blasting hole device, the problem of water rebate in the hole affecting the construction environment is solved, and the centralized collection and discharge of water rebate is achieved, and construction safety and efficiency are improved.
Patent Information
- Application Number
- CN202422631767.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-10-30
AI Technical Summary
During the gas extraction construction process, water rebate in the hole flows into the drilling field through the tail gap of the anti-blasting hole device, affecting the construction environment sanitation and increasing the risk of gas exceeding the limit. The existing technology lacks effective collection and emission devices.
Two sealing pads are added at the tail of the anti-blasting hole device, and a water connection funnel and a water guide tank are equipped to collect the rebate water through the drainage hose to prevent the flow of water from falling to the ground, and use the plugging disc and the extension pipe joint to form a sealing structure.
Effectively reduce the amount of water rebate, keep the construction environment clean, reduce the risk of gas exceeding the limit, improve the standardized operation level of drilling sites, simplify the construction process, and ensure construction safety and efficiency.
Smart Images
Figure CN223152018U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of gas drainage, and particularly relates to a seepage prevention and drainage device for gas drainage borehole construction. Background Technique
[0002] During the gas drainage construction process, the high-level borehole construction in the directional drill site often encounters the problem that the water returning in the borehole flows into the drill site through the gap at the tail of the blowout prevention hole device, affecting the construction environment and hindering the standardized construction process. This is because there is a certain gap between the wear-resistant sleeve at the tail of the blowout prevention hole device and the drill pipe, and the drill pipe usually adopts a triangular grooving design, resulting in the water returning in the borehole overflowing at the gap, which is difficult to effectively control. This situation not only affects the construction environmental hygiene but also may increase the risk of gas exceeding the limit, posing a hidden danger to construction safety. The existing technology lacks a simple and effective device to collect and drain the water returning in the borehole and prevent it from spreading in the drill site, thus ensuring the standardized operation of the drill site. Content of the Utility Model
[0003] To solve the above technical problems, the utility model provides a seepage prevention and drainage device for gas drainage borehole construction.
[0004] The utility model is realized by adopting the following technical scheme: A seepage prevention and drainage device for gas drainage borehole construction includes a blowout prevention device. One end of the blowout prevention device is connected to the coal body, and the other end is connected to a plugging plate through an extension pipe section. A negative pressure connection interface is arranged on the upper side of the pipe body of the extension pipe section. A connecting pipe is arranged on the outer end face of the plugging plate, and a wear-resistant sealing sleeve is embedded in the connecting pipe. One end of a connecting pull rod is connected to both sides of the outer end face of the plugging plate, and the other end of the connecting pull rod is connected to a water receiving funnel. The upper opening of the water receiving funnel is provided with a water guide groove extending obliquely upward towards the side of the plugging plate, and the lower opening of the water receiving funnel is connected to a drainage hose.
[0005] Gaskets are arranged at both ends of the extension pipe section for sealing.
[0006] A water blocking part extends vertically on the side of the upper opening of the water receiving funnel away from the plugging plate.
[0007] The connecting pull rod is hinged to the water receiving funnel through a damping shaft.
[0008] The utility model has the following beneficial effects compared with the prior art:
[0009] The utility model provides an anti-seepage and drainage device for gas drainage borehole construction, which can effectively solve the technical problem of affecting the drill site environment due to water return in the borehole. By adding two sealing gaskets at the tail of the blowout prevention device, the amount of water return is significantly reduced, and a water receiving funnel device is added to centrally collect and drain the water return, avoiding the water flowing directly to the ground and keeping the construction environment clean. At the same time, the device can effectively reduce the risk of gas overrun, improve the standardization operation level of the drill site, simplify the construction process, and ensure the safety and efficiency of the construction process. Brief Description of the Drawings
[0010] Figure 1 is a schematic structural diagram of the utility model;
[0011] Figure 2 is a schematic connection structure diagram of the water receiving funnel and the plugging disc of the utility model.
[0012] In the figure: 1. Blowout prevention device; 11. Negative pressure port; 12. Slag discharge port; 2. Extension pipe section; 21. Negative pressure connection interface; 3. Gasket; 4. Plugging disc; 41. Connecting pipe; 5. Connecting tie rod; 6. Water receiving funnel; 61. Water guide groove; 62. Drainage connection interface; 63. Water blocking part. Detailed Description of the Preferred Embodiment
[0013] In order to better understand the purpose, structure and function of the utility model, the following further describes in detail an anti-seepage and drainage device for gas drainage borehole construction of the utility model with reference to the accompanying drawings.
[0014] As Figure 1 and Figure 2 shown, an anti-seepage and drainage device for gas drainage borehole construction includes a blowout prevention device 1. One end of the blowout prevention device 1 is connected to the coal body, and the other end is connected to a plugging disc 4 through an extension pipe section 2. A negative pressure port 11 is arranged above the blowout prevention device 1, and a slag discharge port 12 is arranged below. A negative pressure connection interface 21 is arranged on the upper side of the pipe body of the extension pipe section 2. A connecting pipe 41 is arranged on the outer end face of the plugging disc 4, and a wear-resistant sealing sleeve is embedded in the connecting pipe 41. One ends of connecting tie rods 5 are connected to both sides of the outer end face of the plugging disc 4, and the other ends of the connecting tie rods 5 are connected to a water receiving funnel 6. An upwardly inclined water guide groove 61 is arranged on the upper opening of the water receiving funnel 6 facing the side of the plugging disc 4, and the lower opening of the water receiving funnel 6 is a connection drainage hose interface 62.
[0015] In this embodiment, a water blocking part 63 is arranged vertically on the side of the upper opening of the water receiving funnel 6 far from the plugging disc 4. When the water flow is too large, the water can be blocked and guided into the water receiving funnel 6. The connecting tie rod 5 is hinged to the water receiving funnel 6 through a damping shaft, and the angle of the water receiving funnel 6 can be adjusted. Gaskets 3 are arranged at both ends of the extension pipe section 2. By adding two gaskets 3 for sealing here, the water flow at this place can be reduced.
[0016] The water receiving funnel 6 provided by the utility model introduces the flowing water in this part into the water sump, ensuring that the water does not fall to the ground and preventing the flowing water from the gap at the tail of the anti-spray hole device from flowing into the drilling field. At the same time, two leather gaskets 3 are added at the tail of the anti-spray hole device for sealing, reducing the flowing water from the gap at the tail of the anti-spray hole device. Through the transformation of this device, the phenomenon of chaotic flowing water caused by the flowing water falling to the ground is eliminated, and the standardization work level of the directional high-position drilling field is improved.
[0017] It can be understood that the utility model is described through some embodiments. As is known to those skilled in the art, without departing from the spirit and scope of the utility model, various changes or equivalent replacements can be made to these features and embodiments. Additionally, under the teaching of the utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the utility model.
Claims
1. An anti-seepage and drainage device for gas drainage borehole construction, characterized in that It includes a blowout preventer (1). One end of the blowout preventer (1) is connected to the coal body, and the other end is connected to a plug disc (4) through an extension pipe section (2). A negative pressure connection interface (21) is provided on the upper side of the pipe body of the extension pipe section (2). A connecting pipe (41) is arranged on the outer end face of the plug disc (4). A wear-resistant sealing sleeve is embedded in the connecting pipe (41). One ends of connecting rods (5) are connected to both sides of the outer end face of the plug disc (4), and the other ends of the connecting rods (5) are connected to a water receiving funnel (6). An inclined upward extending water guide groove (61) is provided on the upper opening of the water receiving funnel (6) facing the side of the plug disc (4). The lower opening of the water receiving funnel (6) is connected to a drainage hose.
2. The anti-seepage and drainage device for gas drainage borehole construction according to claim 1, characterized in that Gaskets (3) are arranged at both ends of the extension pipe section (2) for sealing.
3. The anti-seepage and drainage device for gas drainage borehole construction according to claim 1, characterized in that, A water retaining part (63) extends vertically on the side of the upper opening of the water receiving funnel (6) away from the plug disc (4).
4. The anti-seepage and drainage device for gas drainage borehole construction according to claim 1 or 3, characterized in that, The connecting rod (5) is hinged to the water receiving funnel (6) through a damping shaft.