Gas extraction construction directional long drill hole blowout preventer

Abstract

The utility model belongs to the technical field of directional long drill hole blowout prevention, and particularly relates to a directional long drill hole blowout prevention device for gas extraction construction. A directional long drill hole blowout prevention device for gas extraction construction comprises a coal side, a blowout prevention box, a main negative pressure pipe, a bag, a floral tube, a first hole sealing and slurry discharging pipe, a second hole sealing and slurry discharging pipe, a first flange plate, a second flange plate, a reducer union, a first communicating assembly and a second communicating assembly. The first flange plate is connected with the end, away from the coal side, of the first hole sealing and slurry discharging pipe, the second flange plate is connected with the end, close to the first flange plate, of the second hole sealing and slurry discharging pipe, and the first flange plate and the second flange plate are communicated through a reducer union. The directional long drill hole blowout preventer for gas extraction construction has the advantages that the leakage prevention effect is good, drilling cuttings, water and gas can be effectively separated, and the gas extraction effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of directional long drilling hole blowout prevention, in particular to a directional long drilling hole blowout prevention device for gas extraction construction. Background Art

[0002] Mine gas is a general term for various harmful gases, mainly methane, that gush out from coal and rock during the coal mine production process. It is the main natural factor that seriously threatens the safe production of coal mines. The casualties and property losses caused by gas disasters are enormous. Therefore, preventing gas disasters is of great significance to the healthy and sustainable development of the coal industry. At present, gas extraction is an important means of controlling gas in mine operations.

[0003] During gas extraction, part of the gas will escape, accompanied by drill cuttings and water. Therefore, it is necessary to provide a new directional long drilling blowout prevention device for gas extraction construction to solve the above technical problems. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a directional long drilling blowout prevention device for gas extraction construction which not only has good anti-leakage effect but also can effectively separate drill cuttings, water and gas to improve the gas extraction effect.

[0005] In order to solve the above technical problems, the directional long drilling blowout prevention device for gas extraction construction provided by the utility model adopts the following technical solutions:

[0006] A directional long-drilling blowout prevention device for gas extraction construction comprises a coal bank, a blowout prevention box, a main negative pressure pipe, a bladder bag, a flower pipe, a sealing hole slurry discharge pipe 1, a sealing hole slurry discharge pipe 2, a flange plate 1, a flange plate 2, a reducer, a connecting component 1 and a connecting component 2, wherein the sealing hole slurry discharge pipe 1 is arranged on the coal bank, the flange plate 1 is connected to an end of the sealing hole slurry discharge pipe 1 away from the coal bank, the flange plate 2 is connected to an end of the sealing hole slurry discharge pipe 2 close to the flange plate 1, and the flange plate 1 and the flange plate 2 are connected via a reducer;

[0007] The sealing hole and slurry discharge pipe 2 is provided with an inner lining ring 1 and an inner lining ring 2, and the inner lining ring 1 and the inner lining ring 2 are symmetrically distributed on the left and right. Two rubber rings are provided between the inner lining ring 1 and the inner lining ring 2, and the two rubber rings are respectively fitted with the inner lining ring 1 and the inner lining ring 2. A packing is provided between the two rubber rings, and the two packings are fitted together, and the corresponding packings are fitted with the corresponding rubber rings. A brush is provided between the corresponding packing and the corresponding rubber ring, and the brush is fitted with the corresponding packing and the rubber ring.

[0008] As a further solution of the utility model, the connecting component 1 includes a connecting pipe 1, a steel wire hose 1, two bamboo heads 1, two flange plates 3 and a connecting pipe 2. The connecting pipe 1 is installed on the blowout preventer box, the two bamboo heads 1 are respectively arranged at both ends of the steel wire hose 1, the connecting pipe 2 is installed on the sealing hole discharge pipe 2, and the connecting pipe 1 and the connecting pipe 2 are respectively connected to the two ends of the steel wire hose 1 through two flange plates 3.

[0009] As a further scheme of the utility model, the connecting component 2 includes a connecting pipe 3, two flanges 4, a steel wire hose 2, two bamboo heads 2, a connecting pipe 4, a steel wire hose 3, two bamboo heads 4, two butterfly valves 1, a tee, two butterfly valves 2, a flange 5 and a connecting pipe 5. The connecting pipe 3 is installed on the sealing hole and slurry discharge pipe 2. The top end of the connecting pipe 3 is connected with the bottom end of the bag through the corresponding flange 4. The two bamboo heads 2 are respectively arranged at the two ends of the steel wire hose 2, and one end of the steel wire hose 2 is connected with the top end of the bag through the corresponding flange 4.

[0010] As a further solution of the utility model, the connecting pipe four is installed on the blowout preventer box, and the two shoot heads four are respectively arranged in the top and bottom ends of the steel wire hose three, the bottom end of the steel wire hose three is connected to the top end of the connecting pipe four through a butterfly valve one, and the top end of the steel wire hose three is connected to the bottom end of the three-way pipe through a flange five.

[0011] As a further solution of the utility model, the left end of the three-way pipe is connected to the end of the steel wire hose 2 away from the bag through the corresponding butterfly valve 2, the connecting pipe 5 is installed on the main negative pressure pipe, and the bottom end of the connecting pipe 5 is connected to the top of the three-way pipe through the corresponding butterfly valve 2.

[0012] As a further solution of the utility model, the two bamboo heads 1 are respectively adapted to the two flanges 3, the two bamboo heads 2 are respectively adapted to the corresponding flanges 4 and the corresponding butterfly valves 2, and the two bamboo heads 4 are respectively adapted to the butterfly valve 1 and the corresponding flanges 5.

[0013] Compared with the related art, the directional long drilling blowout prevention device for gas extraction construction provided by the utility model has the following beneficial effects:

[0014] The utility model not only has a good anti-leakage effect, but also can be used to effectively separate drill cuttings, water and gas, thereby improving the gas extraction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. Among them:

[0016] Figure 1It is a structural schematic diagram of the utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of part A;

[0018] Figure 3 It is a schematic diagram of the structure of the anti-blowout box in the utility model.

[0019] In the figure: 1. coal gangway; 2. blowout prevention box; 3. main negative pressure pipe; 4. bladder bag; 5. flower pipe; 6. sealing hole discharge pipe 1; 7. sealing hole discharge pipe 2; 8. flange 1; 9. flange 2; 10. reducer; 11. inner liner 1; 12. inner liner 2; 13. rubber ring; 131. packing; 14. brush; 15. connecting pipe 1; 16. steel wire hose 1; 17. bamboo shoot head 1; 18. flange 3; 19. connecting pipe 2; 20. connecting pipe 3; 21. flange 4; 22. steel wire hose 2; 23. bamboo shoot head 2; 24. connecting pipe 4; 25. steel wire hose 3; 26. bamboo shoot head 4; 27. butterfly valve 1; 28. tee pipe; 29. ​​butterfly valve 2; 30. connecting pipe 5. DETAILED DESCRIPTION

[0020] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present application and does not limit the present application. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present application without departing from the scope or spirit of the present application. For example, a feature shown or described as a part of an embodiment may be used in another embodiment to produce yet another embodiment. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model embodiments shall fall within the scope of protection of the present utility model embodiments.

[0021] Example

[0022] Please refer to Figure 1 , Figure 2 and Figure 3 , a directional long drilling blowout prevention device for gas extraction construction, comprising a coal bank 1, a blowout prevention box 2, a main negative pressure pipe 3, a bag 4, a flower pipe 5, a sealing hole discharge pipe 1 6, a sealing hole discharge pipe 2 7, a flange 1 8, a flange 2 9, a reducer 10, a connecting component 1 and a connecting component 2, wherein the sealing hole discharge pipe 1 6 is arranged on the coal bank 1, the flange 1 8 is connected to an end of the sealing hole discharge pipe 1 6 away from the coal bank 1, the flange 2 9 is connected to an end of the sealing hole discharge pipe 2 7 close to the flange 1 8, and the flange 1 8 and the flange 2 9 are connected through the reducer 10;

[0023] An inner liner ring 11 and an inner liner ring 12 are provided in the sealing hole and slurry discharge pipe 2 7. The inner liner ring 11 and the inner liner ring 12 are symmetrically distributed on the left and right. Two rubber rings 13 are provided between the inner liner ring 11 and the inner liner ring 12. The two rubber rings 13 are respectively fitted with the inner liner ring 11 and the inner liner ring 12. A packing 131 is provided between the two rubber rings 13. The two packings 131 are fitted together, and the corresponding packings 131 are fitted with the corresponding rubber rings 13. A brush 14 is provided between the corresponding packing 131 and the corresponding rubber ring 13, and the brush 14 is fitted with the corresponding packing 131 and the rubber ring 13.

[0024] Leather pads, packing 131, leather pads, brushes 14, and leather pads are used inside to seal the hole to prevent water, drill cuttings, and gas from overflowing from the hole.

[0025] The connecting component 1 includes a connecting pipe 15, a steel hose 16, two bamboo heads 17, two flanges 3 18 and a connecting pipe 2 19. The connecting pipe 15 is installed on the blowout preventer box 2, the two bamboo heads 17 are respectively arranged in the two ends of the steel hose 16, the connecting pipe 2 19 is installed on the sealing hole discharge pipe 2 7, and the connecting pipe 15 and the connecting pipe 2 19 are connected to the two ends of the steel hose 16 respectively through two flanges 3 18.

[0026] The connecting component 2 includes a connecting pipe 3 20, two flanges 4 21, a steel hose 2 22, two bamboo heads 2 23, a connecting pipe 4 24, a steel hose 3 25, two bamboo heads 4 26, two butterfly valves 1 27, a tee 28, two butterfly valves 2 29, a flange 5 and a connecting pipe 5 30. The connecting pipe 3 20 is installed on the sealing hole discharge pipe 2 7. The top end of the connecting pipe 3 20 is connected to the bottom end of the bag 4 through the corresponding flange 4 21. The two bamboo heads 23 are respectively arranged at the two ends of the steel hose 22. One end of the steel hose 22 is connected to the top end of the bag 4 through the corresponding flange 4 21.

[0027] The connecting pipe four 24 is installed on the blowout preventer box 2, and the two shoot heads four 26 are respectively arranged in the top and bottom ends of the steel wire hose three 25. The bottom end of the steel wire hose three 25 is connected to the top end of the connecting pipe four 24 through a butterfly valve one 27, and the top end of the steel wire hose three 25 is connected to the bottom end of the three-way pipe 28 through a flange five.

[0028] The left end of the three-way pipe 28 is connected to the end of the steel wire hose 22 away from the bag 4 through the corresponding butterfly valve 29, the connecting pipe 5 30 is installed on the main negative pressure pipe 3, and the bottom end of the connecting pipe 5 30 is connected to the top of the three-way pipe 28 through the corresponding butterfly valve 29.

[0029] The two bamboo heads 17 are respectively matched with the two flanges 3 18, the two bamboo heads 23 are respectively matched with the corresponding flanges 4 21 and the corresponding butterfly valves 2 29, and the two bamboo heads 4 26 are respectively matched with the butterfly valves 1 27 and the corresponding flanges 5.

[0030] A drill rod is arranged in the sealing hole and slurry discharge pipe 2 7 , and one end of the drill rod passes through the corresponding flange 2 9 , the reducer 10 , the flange 1 8 and extends into the sealing hole and slurry discharge pipe 1 6 .

[0031] Before construction, check whether there is negative pressure and whether the continuous pumping pipeline is firmly connected. Confirm that the continuous pumping pipeline is firm and there is negative pressure. When constructing the first drill rod, increase the negative pressure appropriately, with a small flow and slow water delivery. After the water return in the hole is normal and there is no abnormality in the hole, adjust the flow according to the actual needs of the construction, reduce the negative pressure appropriately, and then drill normally.

[0032] During construction, the drill cuttings, water, and gas returned from the hole are connected to the negative pressure pipe to extract part of the gas. The drill cuttings, water, and gas flow into the blowout preventer box 1 along the connecting component (the blowout preventer box 1 adopts a water-sealed method, and the gas is sealed by water in the upper sealing area of ​​the blowout preventer box 1. The lower part is water and the drill cuttings are at the bottom of the blowout preventer box 1 to prevent gas from overflowing). The drill cuttings, water, and gas flow into the blowout preventer box 1 for steam-water separation. The drill cuttings and water sink to the bottom of the blowout preventer box 1, and the gas enters the top of the blowout preventer box 1. The upper part of the blowout preventer box 1 is connected to the negative pressure pipe to extract the separated gas.

[0033] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above utility model, the details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in this field;

[0034] The standard parts used therein can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0035] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations or direct or indirect applications may be made to these embodiments without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the attached claims and their equivalents, which are equally included in the scope of patent protection of the present invention.

Claims

1. A directional long-hole blowout prevention device for gas extraction construction, characterized in that: It includes a coal bank, a blowout prevention box, a main negative pressure pipe, a bladder bag, a flower pipe, a sealing hole discharge pipe 1, a sealing hole discharge pipe 2, a flange plate 1, a flange plate 2, a reducer, a connecting component 1 and a connecting component 2, wherein the sealing hole discharge pipe 1 is arranged on the coal bank, the flange plate 1 is connected to an end of the sealing hole discharge pipe 1 away from the coal bank, the flange plate 2 is connected to an end of the sealing hole discharge pipe 2 close to the flange plate 1, and the flange plate 1 and the flange plate 2 are connected through a reducer; The sealing hole and slurry discharge pipe 2 is provided with an inner lining ring 1 and an inner lining ring 2, and the inner lining ring 1 and the inner lining ring 2 are symmetrically distributed on the left and right. Two rubber rings are provided between the inner lining ring 1 and the inner lining ring 2, and the two rubber rings are respectively fitted with the inner lining ring 1 and the inner lining ring 2. A packing is provided between the two rubber rings, and the two packings are fitted together, and the corresponding packings are fitted with the corresponding rubber rings. A brush is provided between the corresponding packing and the corresponding rubber ring, and the brush is fitted with the corresponding packing and the rubber ring.

2. The directional long drilling blowout prevention device for gas extraction construction according to claim 1 is characterized in that: The connecting component 1 includes a connecting pipe 1, a steel wire hose 1, two bamboo heads 1, two flange plates 3 and a connecting pipe 2. The connecting pipe 1 is installed on the blowout preventer box, the two bamboo heads 1 are respectively arranged at the two ends of the steel wire hose 1, the connecting pipe 2 is installed on the sealing hole discharge pipe 2, and the connecting pipe 1 and the connecting pipe 2 are respectively connected to the two ends of the steel wire hose 1 through two flange plates 3.

3. The directional long drilling blowout prevention device for gas extraction construction according to claim 1 is characterized in that: The connecting component 2 includes a connecting pipe 3, two flanges 4, a steel wire hose 2, two bamboo heads 2, a connecting pipe 4, a steel wire hose 3, two bamboo heads 4, two butterfly valves 1, a tee, two butterfly valves 2, a flange 5 and a connecting pipe 5. The connecting pipe 3 is installed on the sealing hole and slurry discharge pipe 2. The top end of the connecting pipe 3 is connected with the bottom end of the bag through the corresponding flange 4. The two bamboo heads 2 are respectively arranged at the two ends of the steel wire hose 2. One end of the steel wire hose 2 is connected with the top end of the bag through the corresponding flange 4.

4. The directional long-drilling blowout prevention device for gas extraction construction according to claim 3 is characterized in that: The connecting pipe four is installed on the blowout preventer box, and the two shoot heads four are respectively arranged in the top and bottom ends of the steel wire hose three. The bottom end of the steel wire hose three is connected to the top end of the connecting pipe four through a butterfly valve one, and the top end of the steel wire hose three is connected to the bottom end of the three-way pipe through a flange five.

5. The directional long-drilling blowout prevention device for gas extraction construction according to claim 3 is characterized in that: The left end of the three-way pipe is connected to the end of the steel wire hose 2 away from the bag through the corresponding butterfly valve 2, the connecting pipe 5 is installed on the main negative pressure pipe, and the bottom end of the connecting pipe 5 is connected to the top of the three-way pipe through the corresponding butterfly valve 2.

6. The directional long-drilling blowout prevention device for gas extraction construction according to claim 1 is characterized in that: The two bamboo shoot heads 1 are respectively matched with the two flange plates 3, the two bamboo shoot heads 2 are respectively matched with the corresponding flange plates 4 and the corresponding butterfly valve 2, and the two bamboo shoot heads 4 are respectively matched with the butterfly valve 1 and the corresponding flange plates 5.

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