CN203067016U - Gas-liquid two-phase jet flow slotting system - Google Patents
Gas-liquid two-phase jet flow slotting system Download PDFInfo
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- CN203067016U CN203067016U CN 201320019558 CN201320019558U CN203067016U CN 203067016 U CN203067016 U CN 203067016U CN 201320019558 CN201320019558 CN 201320019558 CN 201320019558 U CN201320019558 U CN 201320019558U CN 203067016 U CN203067016 U CN 203067016U
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- high pressure
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- pressure water
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Abstract
A gas-liquid two-phase jet flow slotting system comprises a high pressure water source, a drilling machine, a drill pipe and a slotting drill bit. A high pressure water braid shaft is arranged on the drill pipe, the high pressure water braid shaft is connected with the high pressure water source through a pipeline, a pressure-reducing valve is arranged in a pipeline of the high pressure water source, an eductor is connected on a pipeline at the front of the pressure-reducing valve through a tee joint, and the eductor comprises a pressure-resistant sleeve and a high-pressure water jet nozzle. A high pressure air ejector is arranged on the side wall of the pressure-resistant sleeve and connected with a high pressure air source. An inlet of the high-pressure water jet nozzle is opposite to an inlet of the high pressure air ejector to form a right angle. An outlet of the eductor is connected with the high pressure water braid shaft through a pipeline. By utilization of the eductor, high pressure air delivered by the high pressure air source is educed, high pressure water and the high pressure air are mixed in the pressure-resistant sleeve to form gas-liquid two-phase jet flows, and the gas-liquid two-phase jet flows are delivered to the slotting drill bit through the high pressure water braid shaft to carry out slotting on a coal body. The cutting capacity of the jet flows can be effectively improved, air permeability of a coal bed is improved, and favorable conditions are provided for gas extraction of the coal bed.
Description
Technical field
The utility model relates to a kind of bubble-liquid two-phase jet slot system, and it is anti-reflection and eliminate coal seam coal and gas outburst risk to be particularly useful for the release of high gas weak seam.
Background technology
In the coal mining industry of China, along with the increase of mining depth, geostatic stress raises, gas pressure increases, and the gas disaster is on the rise, and the regional mash gas harnessing method of taking out coal-bed gas has in advance obtained application more and more widely.Way commonly used be to the coal seam hole and the jetting type slot to improve gas permeability of coal seam and extraction effect.At present, common pure water jet slot is used comparatively extensive, and there is easy plug-hole in pure water jet slot in the application process at the scene, suppresses the hole phenomenon, and needs during pure water jet slot bigger pumping plant pressure just can reach desirable cutting effect, causes in the slot process and exists potential safety hazard.
Summary of the invention
Technical problem: the purpose of this utility model is the weak point that overcomes in the prior art, provide a kind of simple in structure, easy to operate, have a bubble-liquid two-phase jet slot system of strong cutting power.
Technical scheme: bubble-liquid two-phase jet slot of the present utility model system, comprise high-pressure water, rig, drilling rod, the slot drill bit, be provided with the water under high pressure pigtail at described drilling rod, the water under high pressure pigtail links to each other with high-pressure water by the road, the pipeline of high-pressure water is provided with reducing valve, be connected with injector through threeway on the pipeline of reducing valve front portion, described injector comprises withstand voltage sleeve, be located at the high-pressure water shot flow nozzle at withstand voltage sleeve top, the sidewall of withstand voltage sleeve is provided with the pressure-air ejector that is connected with high-pressure air source, high-pressure water jet nozzle entrance and relative the meeting at right angles of pressure-air ejector entrance; The injector outlet of injector links to each other with the water under high pressure pigtail by the road.
Described pressure-air ejector and high-pressure air source connecting line are provided with one way valve.
Beneficial effect: the utility model compared with the prior art, major advantage has:
The two-phase mixing jet of the water and air of a, formation carries out cavitation erosion and pulsating water hammering blow to coal body, can improve the jet cutting power effectively, can increase gas permeability of coal seam, for the coal-bed gas extraction provides advantage.
B, under the prerequisite that guarantees the slot effect, can reduce the pressure of system works effectively, improve safety;
C, under the prerequisite that guarantees the slot effect, can effectively reduce water supply volume by introducing air, reduce the generation of suppressing hole, spray orifice phenomenon, improve the safety in the operation process simultaneously, have practicality widely.
Description of drawings
Fig. 1 is system architecture schematic diagram of the present utility model.
Fig. 2 is injector structural representation of the present utility model.
Among the figure: 1-high-pressure water, 2-reducing valve, 3-injector, 4-water under high pressure pigtail, 5-high-pressure air source, the 6-threeway, 7-one way valve, 8-rig, 9-drilling rod, 10-slot drill bit, 11-high-pressure water shot flow nozzle, the withstand voltage sleeve of 12-, 13-pressure-air ejector.
The specific embodiment
Below in conjunction with accompanying drawing an embodiment of the present utility model is further described:
As shown in Figure 1, bubble-liquid two-phase jet slot of the present utility model system, mainly constituted by high-pressure water 1, injector 3, water under high pressure pigtail 4, high-pressure air source 5, rig 8, drilling rod 9, slot drill bit 10, high-pressure water shot flow nozzle 11, withstand voltage sleeve 12, pressure-air ejector 13, be provided with water under high pressure pigtail 4 at described drilling rod 9, water under high pressure pigtail 4 is connected with drilling rod 9, water under high pressure pigtail 4 is installed on the rig 8 with drilling rod 9, and slot drill bit 10 is installed on the drilling rod 9.Water under high pressure pigtail 4 links to each other with high-pressure water 1 by the road, the pipeline of high-pressure water 1 is provided with threeway 6, two other outlet of threeway 6 is connected with the high-pressure water shot flow nozzle 11 of reducing valve 2 and injector 3 respectively, described injector 3 comprises withstand voltage sleeve 12, be located at the high-pressure water shot flow nozzle 11 at withstand voltage sleeve 12 tops, the sidewall of withstand voltage sleeve 12 is provided with the pressure-air ejector 13 that is connected with high-pressure air source 5, described pressure-air ejector 13 is provided with one way valve 7, described high-pressure water shot flow nozzle 11 entrances and relative the meeting at right angles of pressure-air ejector 13 entrances with high-pressure air source 5 connecting lines; The outlet of injector 3 links to each other with water under high pressure pigtail 4 by the road.The outlet of reducing valve 2 is connected with water under high pressure pigtail 4, and the pressure-air ejector 13 of injector 3 is connected with high-pressure air source 5.Described injector 3 is by high-pressure water shot flow nozzle 11, withstand voltage sleeve 12, pressure-air ejector 13 is formed, the water under high pressure that the outlet that threeway 6 links to each other with injector 3 is flowed out forms ejector action through the high-pressure spray that high-pressure water shot flow nozzle 11 forms to the pressure-air in the pressure-air ejector 13, and realizes that in withstand voltage sleeve 12 gas-liquid two-phase mixes.
As shown in Figure 2, injector 3 mainly is made up of high-pressure water shot flow nozzle 11, withstand voltage sleeve 12 and pressure-air ejector 13, the media outlet close proximity of high-pressure water shot flow nozzle 11 and pressure-air ejector 13, high-pressure water shot flow nozzle 11 all is fixed on the withstand voltage sleeve 12 with pressure-air ejector 13.
Claims (2)
1. bubble-liquid two-phase jet slot system, comprise high-pressure water (1), rig (8), drilling rod (9), slot drill bit (10), it is characterized in that: be provided with water under high pressure pigtail (4) at described drilling rod (9), water under high pressure pigtail (4) links to each other with high-pressure water (1) by the road, the pipeline of high-pressure water (1) is provided with reducing valve (2), be connected with injector (3) through threeway (6) on the pipeline of reducing valve (2) front portion, described injector (3) comprises withstand voltage sleeve (12), be located at the high-pressure water shot flow nozzle (11) at withstand voltage sleeve (12) top, the sidewall of withstand voltage sleeve (12) is provided with the pressure-air ejector (13) that is connected with high-pressure air source (5), high-pressure water shot flow nozzle (11) entrance and relative the meeting at right angles of pressure-air ejector (13) entrance; The outlet of injector (3) links to each other with water under high pressure pigtail (4) by the road.
2. a kind of bubble-liquid two-phase jet slot according to claim 1 system, it is characterized in that: described pressure-air ejector (13) is provided with one way valve (7) with high-pressure air source (5) connecting line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320019558 CN203067016U (en) | 2013-01-15 | 2013-01-15 | Gas-liquid two-phase jet flow slotting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320019558 CN203067016U (en) | 2013-01-15 | 2013-01-15 | Gas-liquid two-phase jet flow slotting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203067016U true CN203067016U (en) | 2013-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320019558 Withdrawn - After Issue CN203067016U (en) | 2013-01-15 | 2013-01-15 | Gas-liquid two-phase jet flow slotting system |
Country Status (1)
| Country | Link |
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| CN (1) | CN203067016U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075180A (en) * | 2013-01-15 | 2013-05-01 | 中国矿业大学 | Gas-liquid two-phase jet slotting system and method |
| CN106121696A (en) * | 2016-08-12 | 2016-11-16 | 中冶华天工程技术有限公司 | Anchor tube and the installation method of anchor tube and recovery method |
-
2013
- 2013-01-15 CN CN 201320019558 patent/CN203067016U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075180A (en) * | 2013-01-15 | 2013-05-01 | 中国矿业大学 | Gas-liquid two-phase jet slotting system and method |
| CN103075180B (en) * | 2013-01-15 | 2014-12-10 | 中国矿业大学 | Gas-liquid two-phase jet slotting system and method |
| CN106121696A (en) * | 2016-08-12 | 2016-11-16 | 中冶华天工程技术有限公司 | Anchor tube and the installation method of anchor tube and recovery method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130717 Effective date of abandoning: 20141210 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130717 Effective date of abandoning: 20141210 |
|
| RGAV | Abandon patent right to avoid regrant |