CN201003412Y - High pressure impulse water hammer water injection device for coal bed - Google Patents
High pressure impulse water hammer water injection device for coal bed Download PDFInfo
- Publication number
- CN201003412Y CN201003412Y CNU2006201653947U CN200620165394U CN201003412Y CN 201003412 Y CN201003412 Y CN 201003412Y CN U2006201653947 U CNU2006201653947 U CN U2006201653947U CN 200620165394 U CN200620165394 U CN 200620165394U CN 201003412 Y CN201003412 Y CN 201003412Y
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- water
- cylinder body
- pressure cylinder
- coal
- high pressure
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 238000002347 injection Methods 0.000 title claims abstract description 8
- 239000007924 injection Substances 0.000 title claims abstract description 8
- 239000003245 coal Substances 0.000 title abstract description 38
- 238000001802 infusion Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000003068 static effect Effects 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 1
- 230000010349 pulsation Effects 0.000 abstract 1
- 230000035699 permeability Effects 0.000 description 7
- 239000002817 coal dust Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 229910001374 Invar Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 210000000476 body water Anatomy 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002153 concerted effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model provides a water injecting device for a coal bed high pressure pulsation water hammer, which comprises a high pressure cylinder body, a low pressure cylinder body sequentially connected and integrated into a whole with the high pressure cylinder body, and a main spring seat; piston components up and down wholly movable are arranged inside the cavity of the low pressure cylinder body and the main spring; an interface connected with the water injecting pipe is arranged at the top part of the high pressure cylinder body; an interface communicated with the low pressure water is arranged on the low pressure cylinder body; a main spring that can reset the piston components is arranged inside the main spring seat; a trigger knockout pin and a water discharge joint are arranged at the bottom of the main spring seat. The utility model is suitable to solve the problem of efficient water injection for the coal bed that is hard to inject water; and can be driven by the static water in the coal mine well underground, or can be driven by pressure liquid generated by a water pump, an oil pump and an emulsified mixture pump etc. the utility model is in compact structure, small volume, light weight, safe and reliable, convenient application, has extensive practicability.
Description
Technical field
The utility model relates to the coal-seam high-pressure pulsating water hammer water-infusion device, 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.
The utility model content
The purpose of this utility model is the problem that exists according to prior art, provides that a kind of equipment volume is little, in light weight, the coal-seam high-pressure pulsating water hammer water-infusion device of dependable performance, long service life.
Coal-seam high-pressure pulsating water hammer water-infusion device of the present utility model, 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.
Coal-seam high-pressure pulsating water hammer water-infusion device of the present utility model, be best suited for quick, the effectively water filling of the very poor difficult injecting layer of coal seam, particularly gas permeability, this causes the safety of coal mines problem with excessive amount of dust by invar in the recovery process with the prevention 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.The piston component that adopts high and low cylinder pressure and move up and down, the instantaneous high pressure that utilizes the knocking of " incompressible " property of water and waterpower to produce shakes the coal seam and splits, make press water pass through these cracks and infiltrate smoothly in the coal body, reach purpose quick, even moistening coal body.This device can inject water very poor " the difficult notes " coal seam of coal seam, particularly gas permeability quickly and efficiently, can improve the production efficiency and the safety in colliery.Its compact conformation, simple to operate, easy to use, have practicality widely.
Description of drawings
Accompanying drawing is the utility model 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 an embodiment of the present utility model is further described:
Shown in the accompanying drawing, the coal-seam high-pressure pulsating water hammer water-infusion device is mainly 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 13 and main spring seat 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.
The course of work: on the interface A of low pressure cylinder body 3, insert low-pressure water, on the interface I of high pressure cylinder body 1, connect and the water injecting pipeline that need carry out the waterpower hammering.After press water entered the B chamber of low pressure cylinder body 3, the promotion piston component slowly moved 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) 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 cavity 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 7 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 5 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.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 (5)
1. 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); 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 plays 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), and triggering push rod (11) is provided with and triggers spring (10).
2. coal-seam high-pressure pulsating water hammer water-infusion device according to claim 1, 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).
3. coal-seam high-pressure pulsating water hammer water-infusion device according to claim 2, 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.
4. coal-seam high-pressure pulsating water hammer water-infusion device according to claim 1 and 2 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.
5. coal-seam high-pressure pulsating water hammer water-infusion device according to claim 3 is characterized in that: be provided with sealing ring between described main valve plug (5) and the spool overcoat (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201653947U CN201003412Y (en) | 2006-12-08 | 2006-12-08 | High pressure impulse water hammer water injection device for coal bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201653947U CN201003412Y (en) | 2006-12-08 | 2006-12-08 | High pressure impulse water hammer water injection device for coal bed |
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| Publication Number | Publication Date |
|---|---|
| CN201003412Y true CN201003412Y (en) | 2008-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201653947U Expired - Lifetime CN201003412Y (en) | 2006-12-08 | 2006-12-08 | High pressure impulse water hammer water injection device for coal bed |
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| Country | Link |
|---|---|
| CN (1) | CN201003412Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100501131C (en) * | 2006-12-08 | 2009-06-17 | 中国矿业大学 | Coal-seam high-pressure pulsating water hammer water-infusion method and apparatus thereof |
-
2006
- 2006-12-08 CN CNU2006201653947U patent/CN201003412Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100501131C (en) * | 2006-12-08 | 2009-06-17 | 中国矿业大学 | Coal-seam high-pressure pulsating water hammer water-infusion method and apparatus thereof |
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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 |
Effective date of abandoning: 20090617 |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20090617 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |