CN114458278B - Coal seam water injection pressure stabilizing device and use method - Google Patents
Coal seam water injection pressure stabilizing device and use method Download PDFInfo
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- CN114458278B CN114458278B CN202210059734.1A CN202210059734A CN114458278B CN 114458278 B CN114458278 B CN 114458278B CN 202210059734 A CN202210059734 A CN 202210059734A CN 114458278 B CN114458278 B CN 114458278B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 313
- 238000002347 injection Methods 0.000 title claims abstract description 82
- 239000007924 injection Substances 0.000 title claims abstract description 82
- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 52
- 239000003245 coal Substances 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000003860 storage Methods 0.000 claims abstract description 54
- 230000001105 regulatory effect Effects 0.000 claims abstract description 43
- 230000007246 mechanism Effects 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims description 33
- 239000013589 supplement Substances 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 238000010992 reflux Methods 0.000 claims description 4
- 230000006837 decompression Effects 0.000 claims description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims 3
- 241001330002 Bambuseae Species 0.000 claims 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 3
- 239000011425 bamboo Substances 0.000 claims 3
- 230000008569 process Effects 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 13
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 239000000428 dust Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 239000002817 coal dust Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Control Of Fluid Pressure (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The application provides a coal seam water injection pressure stabilizing device, which comprises a water storage tank; the water storage tank is internally provided with a submersible pump, a first water pipe is communicated with the submersible pump, a second water pipe is communicated with the first water pipe, the end part of the second water pipe is communicated with a water injection pipe, the lower part of the second water pipe is communicated with a pressure stabilizing valve, the lower end of the pressure stabilizing valve is communicated with a water storage pipe, the water storage pipe is connected with a control valve, the end part of the water storage pipe is communicated with an air pressure tank, a return pipe is communicated with the air pressure tank, and an automatic pressure regulating mechanism is arranged on the return pipe; the application can ensure constant pressure water injection of the coal bed, avoid the unsatisfactory hydraulic fracturing effect caused by water leakage in the water injection process, improve the water injection effect, realize energy conservation and emission reduction by means of the pressure balance principle through opening the pressure stabilizing valve and the air pressure tank, regulate the pressure by the automatic pressure regulating mechanism and realize pressure detection.
Description
Technical Field
The application relates to the technical field of coal seam water injection, in particular to a coal seam water injection pressure stabilizing device and a using method thereof.
Background
Dust in coal mine production, including both rock dust and coal dust, is one of the major hazards of coal mine production. Along with the improvement of the mechanical degree of coal mine excavation, the dust yield is also greatly increased, and the dust treatment quality is directly related to the safe production of the coal mine and the physical health of miners. Coal seam water injection is the most basic and effective dust-proof measure of the mining working face, and is widely applied to various coal mines in recent years. Hydraulic fracturing is used as a key technology in the coal seam water injection process, the macro-micro structure of a coal body is modified, and the development of secondary pores is promoted. The hydraulic fracturing is performed while the macro-micro structure of the coal body is transformed, water fully permeates and wets the coal body under the action of water injection pressure and capillary force, so that the water content of the coal body is improved, the wetting effect of the coal body is enhanced, and the coal dust content in the production process of the working face can be effectively reduced. At present, a mine water injection system generally adopts underground static pressure water injection or high-pressure water pump to inject water under pressure, but in the coal seam water injection process, larger cracks or faults are encountered, water injection pressure is reduced due to the fact that water runs out, cracking effect is not ideal, and water injection effect is seriously affected.
Disclosure of Invention
In order to make up for the defects, the application provides a coal seam water injection pressure stabilizing device and a use method thereof, and aims to improve the problems that in the existing coal seam water injection process, larger cracks or faults are encountered, water injection pressure is reduced due to water leakage, cracking effect is not ideal, and water injection effect is seriously affected.
The embodiment of the application provides a use method of a coal seam water injection pressure stabilizing device, which comprises the following method steps:
s1, storing water into a water storage tank through an input water pipe: inputting and storing water resources into the water storage tank through an external water pump and an external water input pipe;
s2, outputting water resources in the water storage tank through the submersible pump: outputting water resources in the water storage tank through the submersible pump, and conveying the water resources into the air pressure tank through the three-way connector and the pressure stabilizing valve;
s3, adjusting the air pressure through a pressure stabilizing valve: the pressure stabilizing valve has the advantages that the front water pressure and the rear water pressure of the valve clack are equal at ordinary times, when the water leakage condition occurs, the water pressure at the upper end of the valve clack is reduced, the water pressure at the front end of the valve clack is larger than the water pressure at the rear end of the valve clack, the valve clack is opened to supplement water to the second water pipe and the water injection pipe network, the air pressure tank stores water in the air pressure tank by using the characteristic of extremely small compressibility of the water, the air is subjected to compression pressure rise, and when the external force disappears, the compressed air expands to discharge the water and supplement the pressure;
s4, realizing coal seam water injection through a water injection pipe: the second water pipe is used for injecting water into the coal seam through the water injection pipe;
s5, regulating the pressure of the water delivery through a return pipe and an automatic pressure regulating mechanism: when the water injection pipe bears larger pressure, the water resource is decompressed and refluxed into the air pressure tank through the reflux pipe and the automatic pressure regulating mechanism, so that the decompression protection of the water injection pipe is realized;
the device also comprises a coal seam water injection pressure stabilizing device, and comprises a water storage tank;
the water storage tank is characterized in that a submersible pump is fixedly arranged in the water storage tank, a first water pipe is fixedly communicated with the submersible pump, a second water pipe is communicated with the first water pipe, a water injection pipe is communicated with the end part of the second water pipe, a pressure stabilizing valve is fixedly communicated with the lower part of the second water pipe, a water storage pipe is communicated with the lower end of the pressure stabilizing valve, a control valve is connected to the water storage pipe, an air pressure tank is fixedly communicated with the end part of the water storage pipe, a return pipe is fixedly communicated with the air pressure tank, and an automatic pressure regulating mechanism is arranged on the return pipe;
the automatic pressure regulating mechanism comprises a regulating tank, a positioning bracket is fixedly arranged at the bottom end of the regulating tank, a telescopic cylinder is fixedly arranged on the positioning bracket, a telescopic rod is movably connected to the inside of the telescopic cylinder, a sealing plate is fixedly connected to the top end of the telescopic rod, a spring is sleeved on the outer side of the telescopic rod, and the upper end and the lower end of the spring are fixedly connected to the lower end of the sealing plate and the upper end of the positioning bracket respectively.
In the implementation process, the application can ensure constant-pressure water injection of the coal seam, avoid the problem of unsatisfactory hydraulic fracturing effect caused by water leakage in the water injection process, and improve the water injection effect; the pressure stabilizing valve and the air pressure tank are opened by means of the pressure balance principle, so that the requirements of energy conservation, emission reduction, simplicity in operation, convenience in maintenance and the like can be met; the application can ensure constant pressure water injection of the coal bed, avoid the unsatisfactory hydraulic fracturing effect caused by water leakage in the water injection process, and improve the water injection effect, and can meet the requirements of simple operation, convenient maintenance and the like while saving energy and reducing emission by means of the pressure balance principle through opening the pressure stabilizing valve and the air pressure tank, and can realize the pressure detection by adjusting the pressure through the automatic pressure adjusting mechanism.
In a specific embodiment, a limiting ring is fixedly arranged at the upper end of the regulating and controlling tank, the sealing plate is connected in a clamping manner in the limiting ring, and the sealing plate is arranged in an up-down stepped manner.
In the implementation process, the setting of the limiting ring and the sealing plate can be realized that pressure relief can not occur when the pressure is small, and the pressure relief operation is performed through a gap between the limiting ring and the sealing plate when the pressure is large, so that safety and stability are maintained.
In a specific embodiment, a sealing silica gel ring is fixedly adhered to the inner side of the limiting ring, and a sealing gasket is fixedly adhered to the upper end of the sealing plate.
In the implementation process, the setting of the sealing silica gel ring and the sealing gasket on the limiting ring and the sealing plate can realize effective tightness and prevent the problem of water leakage when the pressure is smaller.
In a specific embodiment, the end part of the second water pipe is fixedly communicated with the water injection pipe through a two-way connector, the end part of the first water pipe is fixedly communicated with a three-way connector, and the end parts of the three-way connectors are respectively communicated with the second water pipe and the pressure stabilizing valve.
In the implementation process, the two-way connecting joint and the three-way connecting joint can be set to realize stable communication of the first water conveying pipe and the second water conveying pipe.
In a specific embodiment, the pressure stabilizing valve comprises a valve clack front end and a valve clack rear end, wherein the valve clack front end is fixedly communicated with a valve clack front end pressure gauge, and the valve clack rear end is fixedly communicated with a valve clack rear end pressure gauge.
In the implementation process, the valve clack in the pressure stabilizing valve can effectively control water pressure adjustment, and pressure detection is realized through the valve clack front end pressure gauge and the valve clack rear end pressure gauge.
In a specific embodiment, a filter vat is fixedly arranged on one side of the inside of the water storage tank, a supporting ring is fixedly arranged at the end part of the filter vat, an input water pipe is arranged in the filter vat, and one end of the input water pipe penetrates through the water storage tank.
In the implementation process, the setting of the filter vat can realize the filtration of the water resource output by the input water pipe, so as to prevent sundries in the water resource from causing the blockage of the submersible pump in the water storage tank and prevent the submersible pump from working.
In a specific embodiment, a positioning plate is arranged on one side of the filter vat, and the filter vat is fixedly mounted on the inner wall of one side of the water storage tank through a fixing bolt by the positioning plate.
In the implementation process, the filter vat can be fixedly arranged on the water storage tank by setting the positioning plate and the fixing bolts, so that the input water resource can be conveniently filtered.
In a specific embodiment, the pressure stabilizing valve in S3 is based on the principle of maintaining water pressure balance, that is, water passes through the water pressure balance small hole in the guide pipe to maintain water pressure balance between the front end of the valve clack and the rear end of the valve clack, and the valve clack is in a closed state due to the dead weight of the valve clack and the total pressure of the water borne by the front end of the valve clack and the rear end of the valve clack, and the total pressure above the valve clack is greater than the total pressure below the valve clack.
In the implementation process, the balance adjustment of the pressure is realized through the water pressure balance small hole, and the effective control of the water pressure on the valve clack can be realized, so that the automatic pressure adjustment is realized.
In a specific embodiment, the automatic pressure regulating mechanism in S5 is when the water injection pipe bears the pressure greatly, and the back flow is in with water input automatic pressure regulating mechanism this moment, and the closing plate in the automatic pressure regulating mechanism receives pressure this moment, and telescopic link, telescopic cylinder and spring realize the atress compression this moment, and the water resource is through the gap between spacing ring and the closing plate and is carried out the pressure release protection this moment.
In the implementation process, the pressure of the water injection pipe can be adjusted by setting the automatic pressure regulating mechanism, so that the water injection pipe is prevented from being damaged due to overlarge pressure.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a front view structure according to an embodiment of the present application;
FIG. 2 is a schematic cross-sectional view of an automatic pressure regulating structure according to an embodiment of the present application;
fig. 3 is a flowchart illustrating steps of a method according to an embodiment of the present application.
In the figure: 1. a water storage tank; 2. submersible pump; 3. a first water pipe; 4. a second water pipe; 5. a pressure stabilizing valve; 6. a pressure gauge at the front end of the valve clack; 7. a pressure gauge at the rear end of the valve clack; 8. a water injection pipe; 9. a water storage pipe; 10. a control valve; 11. an air pressure tank; 12. an automatic pressure regulating mechanism; 13. a return pipe; 14. a regulating tank; 15. a sealing plate; 16. a spring; 17. a telescopic rod; 18. a telescopic cylinder; 19. a positioning bracket; 20. a limiting ring; 21. a connector; 22. a three-way connector; 23. a support ring; 24. a filter vat; 25. a positioning plate; 26. a fixing bolt; 27. and (5) inputting a water pipe.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, based on the embodiments of the application, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the application.
Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, based on the embodiments of the application, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
Referring to fig. 1-2, the present application provides a method for using a coal seam water injection pressure stabilizing device, comprising the following steps:
s1, storing water into the water storage tank 1 through an input water pipe 27: the water resource is input and stored into the water storage tank 1 through an external water pump and an input water pipe 27;
s2, outputting water resources in the water storage tank 1 through the submersible pump 2: the water resource in the water storage tank 1 is output through the submersible pump 2, and is conveyed into the air pressure tank 11 through the three-way connector 22 and the pressure stabilizing valve 5;
s3, air pressure is adjusted through the pressure stabilizing valve 5: the front water pressure and the rear water pressure of the valve clack are equal at ordinary times, when water leakage occurs, the water pressure at the upper end of the valve clack is reduced, the water pressure at the front end of the valve clack is larger than the water pressure at the rear end of the valve clack, the valve clack is opened to supplement water to the second water pipe 4 and the water injection pipe network, the air pressure tank 11 stores water in the air pressure tank 11 by using the characteristic of extremely small compressibility of the water, the air is subjected to compression pressure rise, and when the external force disappears, the compressed air expands to discharge the water and supplement the pressure;
s4, realizing coal seam water injection through a water injection pipe 8: the second water pipe 4 is used for injecting water into the coal seam through the water injection pipe 8;
s5, regulating the pressure of the water delivery through the return pipe 13 and the automatic pressure regulating mechanism 12: when the water injection pipe 8 bears larger pressure, the water resource is decompressed and refluxed into the air pressure tank 11 through the reflux pipe 13 and the automatic pressure regulating mechanism 12, so that the decompression protection of the water injection pipe 8 is realized;
the application can ensure constant pressure water injection of the coal bed, avoid the unsatisfactory hydraulic fracturing effect caused by water leakage in the water injection process, and improve the water injection effect. The pressure stabilizing valve 5 and the air pressure tank 11 are opened by means of the pressure balance principle, so that the requirements of energy conservation, emission reduction, simplicity in operation, convenience in maintenance and the like can be met;
the device also comprises a coal seam water injection pressure stabilizing device, and comprises a water storage tank 1;
the water storage tank is characterized in that a submersible pump 2 is fixedly arranged in the water storage tank 1, a first water pipe 3 is fixedly communicated with the submersible pump 2, a second water pipe 4 is communicated with the first water pipe 3, a water injection pipe 8 is communicated with the end part of the second water pipe 4, a pressure stabilizing valve 5 is fixedly communicated with the lower part of the second water pipe 4, a water storage pipe 9 is communicated with the lower end of the pressure stabilizing valve 5, a control valve 10 is connected to the water storage pipe 9, an air pressure tank 11 is fixedly communicated with the end part of the water storage pipe 9, a return pipe 13 is fixedly communicated with the air pressure tank 11, and an automatic pressure regulating mechanism 12 is arranged on the return pipe 13;
the automatic pressure regulating mechanism 12 comprises a regulating tank 14, a positioning bracket 19 is fixedly arranged at the bottom end of the regulating tank 14, a telescopic tube 18 is fixedly arranged on the positioning bracket 19, a telescopic rod 17 is movably connected inside the telescopic tube 18, the top end of the telescopic rod 17 is fixedly connected with a sealing plate 15, the telescopic rod 17 and the outer side of the telescopic tube 18 are sleeved with a spring 16, and the upper end and the lower end of the spring 16 are respectively fixedly connected with the lower end of the sealing plate 15 and the upper end of the positioning bracket 19.
In this embodiment, the upper end of the regulating tank 14 is fixedly provided with a stop ring 20, the sealing plate 15 is connected in the stop ring 20 in a clamping manner, the sealing plate 15 is arranged in an up-down stepped manner, the setting of the stop ring 20 and the sealing plate 15 can realize that no pressure release occurs when the pressure is small, the pressure release operation is performed through a gap between the stop ring 20 and the sealing plate 15 when the pressure is large, the safety and stability are maintained, the inner side of the stop ring 20 is fixedly adhered with a sealing silica gel ring, the upper end of the sealing plate 15 is fixedly adhered with a sealing gasket, the setting of the sealing silica gel ring and the sealing gasket on the stop ring 20 and the sealing plate 15 can realize effective sealing performance, the problem of water leakage is prevented when the pressure is small, the end part of the second water pipe 4 is fixedly communicated with the water injection pipe 8 through the two-way connecting joint 21, the end part of the first water pipe 3 is fixedly communicated with a three-way connector 22, the end part of the three-way connector 22 is respectively communicated with the second water pipe 4 and the pressure stabilizing valve 5, the two-way connector 21 and the three-way connector 22 are set to realize stable communication of the first water pipe 3 and the second water pipe 4, the pressure stabilizing valve 5 comprises a valve clack front end and a valve clack rear end, the valve clack front end is fixedly communicated with a valve clack front end pressure gauge 6, the valve clack rear end is fixedly communicated with a valve clack rear end pressure gauge 7, the valve clack in the pressure stabilizing valve 5 can realize effective control and water pressure adjustment, the pressure is detected through the valve clack front end pressure gauge 6 and the valve clack rear end pressure gauge 7, a filter drum 24 is fixedly arranged on one side of the inside of the water storage tank 1, the end part of the filter drum 24 is fixedly provided with a supporting ring 23, the inside of the filter drum 24 is provided with an input water pipe 27, one end of the input water pipe 27 penetrates through the water storage tank 1, water resources output by the input water pipe 27 can be filtered through setting of the filter vat 24, sundries in the water resources are prevented from blocking the submersible pump 2 in the water storage tank 1 and cannot work, one side of the filter vat 24 is provided with a positioning plate 25, the filter vat 24 is fixedly mounted on one side inner wall of the water storage tank 1 through a fixing bolt 26, and the filter vat 24 can be fixedly mounted on the water storage tank 1 through setting of the positioning plate 25 and the fixing bolt 26, so that the input water resources are conveniently filtered.
When specifically setting up, the steady voltage valve 5 in S3 is carrying out the principle that keeps water pressure balance, namely water passes through the water pressure balance aperture in the stand pipe, keep the water pressure balance of valve clack front end and valve clack rear end, because the dead weight of valve clack, valve clack front end and valve clack rear end atress total pressure difference, the valve clack is in the closed condition, total pressure above the valve clack is greater than the total pressure below the case, realize balanced regulation to pressure through water pressure balance aperture, and can realize carrying out effectual control to the valve clack to water pressure, realize automatically regulated pressure, automatic pressure regulating mechanism 12 in S5 is when water injection pipe 8 bears the pressure great, and back flow 13 is with water input automatic pressure regulating mechanism 12 in this moment, and the closing plate 15 in the automatic pressure regulating mechanism 12 receives the pressure, telescopic link 17, telescopic cylinder and spring 16 realize the atress compression this moment, the water resource is through spacing ring 20 and the gap between closing plate 15 and is protected, automatic pressure regulating mechanism 12' S settlement can realize the pressure to water injection pipe 8, prevent that the pressure from damaging water injection pipe 8 excessively.
Specifically, the working principle of the coal seam water injection pressure stabilizing device is as follows: when in use, water is stored in the water storage tank 1 through the input water pipe 27: the water resource is input and stored into the water storage tank 1 through an external water pump and an input water pipe 27; realize exporting the inside water resource of storage water tank 1 through immersible pump 2: the water resource in the water storage tank 1 is output through the submersible pump 2, and is conveyed into the air pressure tank 11 through the three-way connector 22 and the pressure stabilizing valve 5; the air pressure is regulated through the pressure stabilizing valve 5: the front water pressure and the rear water pressure of the valve clack are equal at ordinary times, when water leakage occurs, the water pressure at the upper end of the valve clack is reduced, the water pressure at the front end of the valve clack is larger than the water pressure at the rear end of the valve clack, the valve clack is opened to supplement water to the second water pipe 4 and the water injection pipe network, the air pressure tank 11 stores water in the air pressure tank 11 by using the characteristic of extremely small compressibility of the water, the air is subjected to compression pressure rise, and when the external force disappears, the compressed air expands to discharge the water and supplement the pressure; realize coal seam water injection through water injection pipe 8: the second water pipe 4 is used for injecting water into the coal seam through the water injection pipe 8; the pressure of the water is regulated by the return pipe 13 and the automatic pressure regulating mechanism 12: when the water injection pipe 8 bears larger pressure, water resources are decompressed and refluxed into the air pressure tank 11 through the reflux pipe 13 and the automatic pressure regulating mechanism 12, so that the water injection pipe 8 is decompressed and protected.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. The application method of the coal seam water injection pressure stabilizing device is characterized by comprising the following steps of:
s1, storing water into a water storage tank (1) through an input water pipe (27): inputting and storing water resources into the water storage tank (1) through an external water pump and an input water pipe (27);
s2, outputting water resources in the water storage tank (1) through the submersible pump (2): the water resource in the water storage tank (1) is output through the submersible pump (2), and is conveyed into the air pressure tank (11) through the three-way connector (22) and the pressure stabilizing valve (5);
s3, adjusting the air pressure through a pressure stabilizing valve (5): the pressure stabilizing valve (5) has the advantages that the front water pressure and the rear water pressure of the valve clack are equal at ordinary times, when water leakage occurs, the water pressure at the upper end of the valve clack is reduced, the water pressure at the front end of the valve clack is larger than the water pressure at the rear end of the valve clack, the valve clack is opened to supplement water to the second water pipe (4) and the water injection pipe network, the air pressure tank (11) stores water in the air pressure tank (11) by using the characteristic of extremely small compressibility of the water, the air is subjected to compression pressure rise, and when the external force disappears, the compressed air expands to discharge the water to supplement the pressure;
s4, realizing coal seam water injection through a water injection pipe (8): the second water delivery pipe (4) is used for injecting water into the coal seam through the water injection pipe (8);
s5, regulating the pressure of the water delivery through a return pipe (13) and an automatic pressure regulating mechanism (12): when the water injection pipe (8) bears larger pressure, the water resource is decompressed and refluxed into the air pressure tank (11) through the reflux pipe (13) and the automatic pressure regulating mechanism (12), so that the decompression protection of the water injection pipe (8) is realized;
the device is characterized by comprising a water storage tank (1);
the water storage tank is characterized in that a submersible pump (2) is fixedly arranged in the water storage tank (1), a first water pipe (3) is fixedly communicated with the submersible pump (2), a second water pipe (4) is communicated with the first water pipe (3), a water injection pipe (8) is communicated with the end part of the second water pipe (4), a pressure stabilizing valve (5) is fixedly communicated with the lower part of the second water pipe (4), a water storage pipe (9) is communicated with the lower end of the pressure stabilizing valve (5), a control valve (10) is connected with the water storage pipe (9), an air pressure tank (11) is fixedly communicated with the end part of the water storage pipe (9), a return pipe (13) is fixedly communicated with the air pressure tank (11), and an automatic pressure regulating mechanism (12) is arranged on the return pipe (13);
automatic pressure regulating mechanism (12) are including regulation and control jar (14), the bottom fixed mounting of regulation and control jar (14) has locating support (19), fixed mounting has flexible section of thick bamboo (18) on locating support (19), the inside swing joint of flexible section of thick bamboo (18) has telescopic link (17), the top fixedly connected with closing plate (15) of telescopic link (17), telescopic link (17) with spring (16) have been cup jointed in the outside of flexible section of thick bamboo (18), the upper and lower both ends of spring (16) are fixed connection respectively the lower extreme of closing plate (15) with the upper end of locating support (19).
2. The use method of the coal seam water injection pressure stabilizing device according to claim 1, wherein a limiting ring (20) is fixed at the upper end of the regulating tank (14), the sealing plate (15) is connected in the limiting ring (20) in a clamping mode, and the sealing plate (15) is arranged in an up-down stepped mode.
3. The use method of the coal seam water injection pressure stabilizing device according to claim 2, wherein a sealing silica gel ring is fixedly adhered to the inner side of the limiting ring (20), and a sealing gasket is fixedly adhered to the upper end of the sealing plate (15).
4. The use method of the coal seam water injection pressure stabilizing device according to claim 1, wherein the end part of the second water pipe (4) is fixedly communicated with the water injection pipe (8) through a two-way connecting joint (21), the end part of the first water pipe (3) is fixedly communicated with a three-way connecting joint (22), and the end parts of the three-way connecting joint (22) are respectively communicated with the second water pipe (4) and the pressure stabilizing valve (5).
5. The use method of the coal seam water injection pressure stabilizing device according to claim 1, wherein the pressure stabilizing valve (5) comprises a valve clack front end and a valve clack rear end, a valve clack front end pressure gauge (6) is fixedly communicated with the valve clack front end, and a valve clack rear end pressure gauge (7) is fixedly communicated with the valve clack rear end.
6. The use method of the coal seam water injection pressure stabilizing device according to claim 1, wherein a filter vat (24) is fixedly arranged on one side of the inside of the water storage tank (1), a support ring (23) is fixedly arranged at the end part of the filter vat (24), an input water pipe (27) is arranged in the filter vat (24), and one end of the input water pipe (27) penetrates through the water storage tank (1).
7. The use method of the coal seam water injection pressure stabilizing device according to claim 6, wherein a positioning plate (25) is arranged on one side of the filter vat (24), and the filter vat (24) is fixedly installed on the inner wall of one side of the water storage tank (1) through a fixing bolt (26) by the positioning plate (25).
8. The method of using a pressure stabilizing device for coal seam water injection according to claim 1, wherein the pressure stabilizing valve (5) in S3 is used for maintaining the water pressure balance, that is, the water passes through the water pressure balance small hole in the guide pipe, so as to maintain the water pressure balance between the front end of the valve clack and the rear end of the valve clack, and the valve clack is in a closed state due to the dead weight of the valve clack and the total pressure of the water borne by the front end of the valve clack and the rear end of the valve clack, and the total pressure above the valve clack is greater than the total pressure below the valve clack.
9. The use method of the coal seam water injection pressure stabilizing device according to claim 1, wherein when the pressure born by the water injection pipe (8) is large, the automatic pressure regulating mechanism (12) in the S5 is characterized in that the return pipe (13) inputs water into the automatic pressure regulating mechanism (12), the sealing plate (15) in the automatic pressure regulating mechanism (12) is stressed, the telescopic rod (17), the telescopic cylinder and the spring (16) are stressed and compressed, and the water resource is subjected to pressure relief protection through a gap between the limiting ring (20) and the sealing plate (15).
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