CN100501131C - Coal-seam high-pressure pulsating water hammer water-infusion method and apparatus thereof - Google Patents
Coal-seam high-pressure pulsating water hammer water-infusion method and apparatus thereof Download PDFInfo
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- CN100501131C CN100501131C CNB2006101614010A CN200610161401A CN100501131C CN 100501131 C CN100501131 C CN 100501131C CN B2006101614010 A CNB2006101614010 A CN B2006101614010A CN 200610161401 A CN200610161401 A CN 200610161401A CN 100501131 C CN100501131 C CN 100501131C
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Abstract
The present invention relates to a coal bed high-pressure pulsating water hammer water injection method and its equipment. Said high-pressure water injection equipment includes the following several portions: high-pressure cylinder body, low-pressure cylinder body and main spring seat which are successively connected together with high-pressure cylinder body, in the low-pressure cylinder body interior a piston component is set, and can be upwards and downwards moved, the top portion of said high-pressure cylinder body is equipped with a connecting hole which can be connected with water-injecting pipe, on the shell body of said low-pressure cylinder body a connecting hole is set, said connecting hole is connected with low-pressure water, in the main spring seat a main spring capable of making pistion component be reset is set, its bottom portion is equipped with trigger bar, and the upper portion of trigger bar is equipped with trigger spring. Said invention also provides the basic principle of said water hammer water injection method and its operation steps.
Description
Technical field
The present invention relates to coal-seam high-pressure pulsating water hammer water-infusion method and device thereof, be particularly useful for quick, the effectively water filling of the very poor difficult injecting layer of coal seam, particularly gas permeability, also be applicable to the water in coal seam in the colliery, also can be used for power plant, the antiscale that pressure pipe road, equipment are arranged, scale removal and the cleaning of industries such as petrochemical industry.
Background technology
Gas in the coal body more than 90% is composed with the form of absorption and is existed in the hole and crack of coal body.still unmind or undisturbed coal body in, methane gas keeps dynamic adsorption equilibrium.After the coal seam was exploited, the crack in the coal seam was exposed, and the gas bearing state of balance is broken.A large amount of methane gas constantly desorb from coal body, migrate to the tunnel or do in the face by the hole in the coal body, microfissure, crack.Present most colliery is utilizing high power coal-winning machine and mining production practice, under the low situation of every layer of water content, will cause the coal dust generation to increase, not only safety in production is constituted a threat to, also, directly damage the healthy of workman because of production environment worsens.Therefore, if administer taking effective measures of gas and coal dust, just might cause gas and coal-dust explosion.
The generation that effectively prevents gas and coal dust disaster is the work that guarantees the Safety of Coal Mine Production most important thing always.In numerous preventive action, water filling is simple and effective and method that effect a permanent cure in the coal seam.This is because in the process of prewetting of coal-bed flooding, because expanded and the chemical and physicochemical effect of the pressure of fracture surface, interlayer and mineral money, the mechanical property of coal is changed, retrospective increases, hardness and intensity reduce, cause coal body loose, reduced the speed that stress is concentrated and gas diffuses of coal body inside, the coal dust amount that generates in the coal shattering process will reduce to some extent, and gas emission also reduces, generally speaking, the bed moisture increase the more, the reduced rate of gas emission is bigger, and simultaneously, the coal dust that generates after the coal fragmentation is also fewer.This shows that coal-bed flooding has following advantage: (1) can soften the coal seam; Reduce cut and broken energy, reduce the damage of equipment and improve recovery ratio; (2) can prolong the ignition cycle, avoid the generation of fire; (3) can prevent the harm of bump; (4) can reduce the workplace temperature.So coal-bed flooding is the most pleased technical method that adopts in colliery always.
Make the coal seam moistening and softening, prerequisite is in the coal body water to be arranged.How quickly and efficiently water being injected coal body is " coal-bed flooding " this technical measures key of success.Present flood pattern generally adopts down-hole static pressure water filling or high-pressure hydraulic pump pressure water injection.The static pressure water filling is the easiest method, and is respond well for the good coal seam of gas permeability.But the pressure of static pressure water is limited, is not suitable for the relatively poor coal seam of gas permeability.Though adopt the high-pressure hydraulic pump pressure water injection to widen the scope of application of normal pressure water filling, the pressure that water pump provides also is limited, for the very poor coal seam of gas permeability, also is difficult to reach ideal effect.The pressure of water injecting pump is high more simultaneously, and the operation of equipment, maintenance and management require also high more.It is reported that a kind of new spy's of the urgent expectation in colliery at present water injection technology occurs, can quickly and efficiently water be injected very poor " the difficult notes " coal seam of coal seam, particularly gas permeability.Moreover, the water filling problem of solution difficult injecting layer has caused country, government administration section and scientific worker's extensive concern.
Summary of the invention
The objective of the invention is the problem that exists according to prior art, provide a kind of method simple, equipment volume is little, in light weight, the coal-seam high-pressure pulsating water hammer water-infusion method and the device thereof of dependable performance, long service life.
Water hammer water-infusion method of the present invention, on the interface of the low pressure cylinder body of high-pressure pulsating water hammer water-infusion device, feed low-pressure water, on the interface of high pressure cylinder body, connect the water injecting pipeline that need carry out the waterpower hammering, the low pressure cylinder body is fed press water, piston component is slowly moved down under the effect of hydraulic pressure, the accumulation of energy of compression main spring, set pan position under the piston component, by the triggering spring of wedging ring on the triggering push rod, make the accumulation of energy abrupt release of main spring institute, move the water in the hammering high pressure cylinder body cavity on promotion hollow section plunger is quick, make the moment increase of its pressure, and propagate into by in the coal seam of water filling by water injection pipe; Change the hydraulic pressure that enters the low pressure cylinder body and regulate the height that triggers push rod and can change " water hammer " intensity; Adjusting enters the low pressure chamber of low pressure cylinder body from interface the flow of press water can change the size of " water hammer " frequency.
Water hammer water-infusion device of the present invention, it comprises high pressure cylinder body, with low pressure cylinder body and the main spring seat that the high pressure cylinder body order is connected as a single entity, is provided with the mobile piston component of integral body up and down in the cavity of low pressure cylinder body and main spring seat; The high pressure cylinder body top is provided with the interface that links to each other with water injection pipe; The housing of low pressure cylinder body is provided with the interface that links to each other with low-pressure water; Be provided with the main spring that plays that piston component is resetted in the main spring seat, its bottom is provided with triggers push rod and water out adapter, triggers push rod and is provided with the triggering spring.
Piston that described piston component is connected as a single entity by the hollow section plunger, with the hollow section plunger and the current that are fixed on hollow section plunger bottom touch valve and constitute, have a plurality of inlet openings on the hollow section plunger, end sealing by high pressure cylinder body has the inlet opening that is connected with the hollow section plunger on the piston; Described current touch valve by being fixed on spool overcoat on the piston, being located at the main valve plug in the spool overcoat and the valve seat nut that matches with it constitutes, be provided with the back-moving spring that triggers spool and match with it in the main valve plug, the valve seat nut is fixed on spool and puts outward; Trigger spool and be provided with a plurality of weep holes; The main valve plug top is provided with an aperture with throttling action, and spool overcoat housing is provided with a plurality of weep holes; The fitting face of described hollow section plunger and the piston that is connected as a single entity with it and low pressure cylinder body is provided with sealing ring; Be provided with sealing ring between described main valve plug and the spool overcoat.
The instantaneous high pressure that the present invention utilizes water " incompressible " property and waterpower knocking to produce, the coal seam shaken split, making press water pass through these cracks infiltrates in the coal body smoothly, reach method quick, even moistening coal body, the water-hammer device that cooperates this method of realization, by high and low cylinder pressure and the hammering of the piston component that moves up and down to press water, can quickly and efficiently water be injected very poor " the difficult notes " coal seam of coal seam, particularly gas permeability, can improve the production efficiency and the safety in colliery.This causes the safety of coal mines problem with excessive amount of dust by invar in the recovery process also can effectively to prevent the coal seam, also can be widely used in power plant, the antiscale that pressure pipe road, equipment are arranged, scale removal and the cleaning of industries such as petrochemical industry.Its compact conformation, simple to operate, easy to use, have practicality widely.
Description of drawings
Accompanying drawing is the present invention's water hammer generator structure chart that surges.
Among the figure: high pressure cylinder body-1, hollow section plunger-2, low pressure cylinder body-3, piston-4, main valve plug-5, back-moving spring-6 triggers spool-7, spool overcoat-8, and valve seat nut-9 triggers spring-10, trigger push rod-11, water out adapter-12, main spring seat-13, main spring-14.
The specific embodiment
Below in conjunction with accompanying drawing one embodiment of the present of invention are further described:
As shown in the figure, the coal-seam high-pressure pulsating water hammer water-infusion device is by high pressure cylinder body 1, hollow section plunger 2, low pressure cylinder body 3, piston 4, main valve plug 5, back-moving spring 6, trigger spool 7, spool overcoat 8, valve seat nut 9, trigger spring 10, trigger push rod 11, water out adapter 12, main spring seat 13 and main spring 14 are formed.High pressure cylinder body 1 is fixed on the top of low pressure cylinder body 3, and main spring seat 13 is fixed on the bottom of low pressure cylinder body 3, with screw high pressure cylinder body 1, low pressure cylinder body 3 and main spring seat 13 is connected into an integral body.Be provided with the mobile piston component of integral body up and down in the cavity of low pressure cylinder body 3 and main spring seat 13, this piston component touches valve by hollow section plunger 2, piston 4 and current and constitutes, hollow section plunger 2 is welded as a whole with piston 4, behind the low pressure of packing into the cylinder body 3, constitutes cavity B with low pressure cylinder body 3; Hollow section plunger 2 is communicated with the end sealing of high pressure cylinder body 1, constitute cavity H with high pressure cylinder body 1, have a plurality of inlet openings on the hollow section plunger 2, have the inlet opening that is connected with hollow section plunger 2 on the piston 4, current touch the bottom that valve is fixed on piston 4, it is by being fixed on spool overcoat 8 on the piston 4, being located at the main valve plug 5 in the spool overcoat 8 and the valve seat nut 9 that matches with it constitutes, be provided with the triggering spool 7 that matches with back-moving spring 6 in the main valve plug 5, valve seat nut 9 is screwed on the spool overcoat 8, triggers spring 10 and is contained on the triggering push rod 11; Trigger on the spool 7 and have several weep holes, the water in the cavity D is flowed out smoothly.Main valve plug 5 and triggering spool 7 all are contained in the spool overcoat 8, spool overcoat 8 one ends by screw on the outer face of piston 4, the center of valve seat nut 9 has a circular hole, form after the engagement of the edge of its inner end and triggering spool 7 and trigger valve E, main valve plug 5 is enclosed within the outside of triggering spool 7, in 2 cavity D that form back-moving spring 6 is housed.Main valve plug 5 tops have an aperture K with throttling action, have a plurality of weep holes on spool overcoat 8 housings, by formation main valve G after the middle bore edges of low pressure cylinder body 3 one ends and main valve plug 5 engagement.High pressure cylinder body 1 top is provided with the interface I that links to each other with water injection pipe; The housing of low pressure cylinder body 3 is provided with the interface A that links to each other with low-pressure water; Be provided with the main spring 14 that piston component is resetted in the main spring seat 13, hollow section plunger 2 and the piston 4 that is connected as a single entity with it and the fitting face of low pressure cylinder body 3 are provided with sealing ring.Trigger spring housing 10 and be located at the upper end of triggering push rod 11, the lower end of triggering push rod 11 is screwed in the bottom of main spring seat 13 and uses nut check, main spring 14 to be placed on and play radially position-limiting action in the main spring seat 13, and the piston component seat can move up and down in the upper end of main spring 14.Water out adapter 12 is equipped with in the bottom of main spring seat 13, water wherein can be drawn.
Coal-seam high-pressure pulsating water hammer water-infusion method is: insert low-pressure water on the interface A on the low pressure cylinder body 3 of high-pressure pulsating water hammer water-infusion device, on the interface I of high pressure cylinder body 1, connect the water injecting pipeline that need carry out the waterpower hammering, pressure is introduced press water through a choke valve from interface A, the promotion piston component slowly moves down and with main spring 14 compress energy storage, piston component begins compression and triggers spring 10 when moving down into certain position.Along with the piston component amount of moving down increases, the elastic force that triggers spring 10 also constantly increases, when the elastic force of the active force that triggers spool 7 inboards (comprise hydraulic pressure make a concerted effort and back-moving spring power 6) suffered triggering spring 10 outside with it just equates is trigger position, when piston component has small moving down again, trigger spring 10 power greater than triggering spool 7 inboard active forces, the triggering valve is opened slightly, and D there are flowing out in the chamber.Act on the hydraulic pressure also decline to some extent with joint efforts that triggers on the spool 7 because of the water in the D chamber flows out to make, like this one increases one subtracts, and triggers the impetus that resets of spring 10 in addition, and triggering spool 7 was flicked by moment, triggers valve E and opens fully, and the water in the D chamber is extruded; Because the throttling action of aperture K on the main valve plug 5, outside water can not in time cover, and the pressure in the D chamber is sharply reduced; Because of the hydraulic pressure in the D chamber significantly reduces, main valve plug 5 is moved down under the hydraulic action of its outer end, main valve G opens, and the water in the B chamber flows out from a plurality of inlet openings of hollow plunger 2, and pressure reduces rapidly simultaneously; This moment, piston component moved on fast upwards producing a very big acceleration under the huge thrust of main spring 14, utilize the water among end face " hammering " the high pressure cylinder body H of hollow plunger 2, make the moment sharp increase of its pressure form peak pressure, utilize " incompressible " property of water this peak pressure can be transmitted to great distances in water injecting pipeline.On piston component, move on to and trigger the time spent of doing that spool leaves triggering spring 10, under the effect of back-moving spring 6, trigger valve 7 and close.Water in the B chamber when flowing out also the aperture K on main valve plug flow to the D chamber, main valve G closes to make main valve plug 5 move the most at last on relative in back-moving spring 6 and D chamber under the acting in conjunction of hydraulic pressure, has so far finished a water hammer working cycles.Change hydraulic pressure that enters the low pressure cylinder body and the height of regulating the triggering push rod and can change " water hammer " intensity, regulate the flow that enters the press water of low pressure chamber B from the A mouth, can change the frequency of " water hammer ".This water-hammer device can be with the static pressure water-driven under the coal mine, and the press liquid that has of generations such as also available water pump, oil pump and emulsion pump drives.
Claims (7)
1. coal-seam high-pressure pulsating water hammer water-infusion method, it is characterized in that: go up at the interface (A) of the low pressure cylinder body (3) of high-pressure pulsating water hammer water-infusion device and feed low-pressure water, interface (I) in high pressure cylinder body (1) is gone up the water injecting pipeline that connection need be carried out the waterpower hammering, low pressure cylinder body (3) is fed press water, piston component is slowly moved down under the effect of hydraulic pressure and compress main spring (14) accumulation of energy, set pan position under the piston component, by the triggering spring (10) of wedging ring on triggering push rod (11), make the accumulation of energy abrupt release of main spring (14) institute, move the water in hammering high pressure cylinder body (1) cavity (H) on promotion hollow section plunger (2) is quick, make the moment increase of its pressure, and propagate into by in the coal seam of water filling by water injection pipe.
2. coal-seam high-pressure pulsating water hammer water-infusion method according to claim 1 is characterized in that: change the hydraulic pressure that enters low pressure cylinder body (3) and regulate the height that triggers push rod (11), can change water hammer intensity; The flow of press water that adjusting enters the low pressure chamber B of low pressure cylinder body (3) can change the water hammer frequency.
3. coal-seam high-pressure pulsating water hammer water-infusion device, it is characterized in that: it comprises high pressure cylinder body (1), with low pressure cylinder body (3) and the main spring seat (13) that high pressure cylinder body (1) order is connected as a single entity, be provided with the mobile piston component of integral body up and down in the cavity of low pressure cylinder body (3) and main spring seat (13); High pressure cylinder body (1) top is provided with the interface (I) that links to each other with water injection pipe; The housing of low pressure cylinder body (3) is provided with the interface (A) that links to each other with low-pressure water; Be provided with the main spring (14) that piston component is resetted in the main spring seat (13), its bottom is provided with triggers push rod (11) and water out adapter (12), triggers push rod (11) and is provided with triggering spring (10).
4. coal-seam high-pressure pulsating water hammer water-infusion device according to claim 3, it is characterized in that: piston (4) that described piston component is connected as a single entity by hollow section plunger (2), with hollow section plunger (2) and the current that are fixed on hollow section plunger (2) bottom touch the valve formation, the hollow section plunger has a plurality of inlet openings on (2), end sealing by high pressure cylinder body (1) has the inlet opening that is connected with hollow section plunger (2) on the piston (4).
5. coal-seam high-pressure pulsating water hammer water-infusion device according to claim 4, it is characterized in that: described current touch valve by being fixed on the spool overcoat (8) on the piston (4), valve seat nut (9) formation that is located at the main valve plug (5) in the spool overcoat (8) and matches with it, be provided with the back-moving spring (6) that triggers spool (7) and match with it in the main valve plug (5), valve seat nut (9) is fixed on the spool overcoat (8); Trigger spool (7) and be provided with a plurality of weep holes; Main valve plug (5) top is provided with an aperture (K) with throttling action, and spool overcoat (8) housing is provided with a plurality of weep holes.
6. coal-seam high-pressure pulsating water hammer water-infusion device according to claim 4 is characterized in that: the fitting face of described hollow section plunger (2) and piston (4) that is connected as a single entity with it and low pressure cylinder body (3) is provided with sealing ring.
7. coal-seam high-pressure pulsating water hammer water-infusion device according to claim 5 is characterized in that: be provided with sealing ring between described main valve plug (5) and the spool overcoat (8).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101614010A CN100501131C (en) | 2006-12-08 | 2006-12-08 | Coal-seam high-pressure pulsating water hammer water-infusion method and apparatus thereof |
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| CNB2006101614010A CN100501131C (en) | 2006-12-08 | 2006-12-08 | Coal-seam high-pressure pulsating water hammer water-infusion method and apparatus thereof |
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| CN100501131C true CN100501131C (en) | 2009-06-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539028B (en) * | 2009-04-30 | 2011-12-28 | 中国矿业大学(北京) | Apparatus for preventing and controlling coal or rock dynamic disaster by high-pressure pulse water injection |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889094B (en) * | 2011-07-20 | 2015-02-25 | 平安煤矿瓦斯治理国家工程研究中心有限责任公司 | Coal seam water injection system |
| CN105332942B (en) * | 2015-12-08 | 2017-11-28 | 上海麦玺隆机械科技有限公司 | One kind buffering water conservancy diversion water-hammer arrester and its application method |
| CN113107575B (en) * | 2021-04-27 | 2023-04-28 | 太原理工大学 | Coal seam double-cylinder high-pressure pulse fluctuation water injection generating device |
| CN113107574B (en) * | 2021-04-27 | 2023-01-24 | 太原理工大学 | Unpowered pulse water hammer pump generating device |
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Cited By (1)
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| CN101539028B (en) * | 2009-04-30 | 2011-12-28 | 中国矿业大学(北京) | Apparatus for preventing and controlling coal or rock dynamic disaster by high-pressure pulse water injection |
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| CN1975114A (en) | 2007-06-06 |
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