CN103967520A - Automatic high-efficiency water discharging device for coal-mine gas extraction pipe - Google Patents
Automatic high-efficiency water discharging device for coal-mine gas extraction pipe Download PDFInfo
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- CN103967520A CN103967520A CN201410198960.3A CN201410198960A CN103967520A CN 103967520 A CN103967520 A CN 103967520A CN 201410198960 A CN201410198960 A CN 201410198960A CN 103967520 A CN103967520 A CN 103967520A
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- upper cover
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Abstract
The invention discloses an automatic high-efficiency water discharging device for a coal-mine gas extraction pipe and belongs to the field of coal mine automation. The automatic high-efficiency water discharging device is used for automatically discharging water accumulated in the gas extraction pipe. The automatic high-efficiency water discharging device comprises a water discharging device cylinder assembly, an upper cover assembly and a flat floating ball assembly. The water discharging device cylinder assembly comprises a dual-acting pneumatic ball valve, a single-acting pneumatic ball valve, a cylinder and a static guide rod, and the flat floating ball assembly comprises a flat floating ball, a flat floating ball guide rod and a flat floating ball magnet. The automatic high-efficiency water discharging device has the advantages of being high in water discharging efficiency, simple in structure, stable in operation and capable of automatically being switched off when decompression happens, and can discharge water accumulated in the gas extraction pipe efficiently, safely, stably and automatically.
Description
Technical field
The invention belongs to mine automation field, relate to the efficient automatic bleeder of a kind of methane gas extraction pipeline, for the automatic-discharging of methane gas extraction pipeline water.
Background technology
Under coal mine there is the larger temperature difference in each point, therefore in gas drainage system pipeline, can form a large amount of condensed waters.In addition, inevitably contain moisture due to coal seam and rock stratum, place, in boring procedure, also can produce a large amount of Drilling Waters and enter into gas drainage system pipeline.Being present in condensed water in methane gas extraction pipeline and Drilling Water affects the normal operation of extraction system, increases extraction resistance, reduces extracting result.In the situation that other operating modes are constant, the increase of pipeline ponding increases the increase of system negative pressure, pressure reduction reduction, gas density.When ponding is serious, even cause extraction to be interrupted, cause gas exceeding limit accident.Therefore, design discharge water that efficiency is high, the methane gas extraction pipeline tailrace of stable performance, safety for gas drainage system stable, safe operation is significant.
Mostly existing tailrace is to utilize ball float gravity, buoyancy, magnetic force, extraction pipeline negative pressure as power source, drives into the switching of penstock and Draw off valve in conjunction with certain frame for movement, realizes the methane gas extraction pipeline function that discharges water.This mode mainly contains 3 deficiencies: the efficiency that 1. discharges water is low.The common efficiency that discharges water is in 10L/min left and right.2. easily stop up.The efficiency that discharges water is low, and in the process that discharges water, the flow velocity of water is slower, causes dregs in water to be easy to deposition, there will be severe the situation that dewatering outlet is stopped up, tailrace lost efficacy.3. safety is poor.When the situation that occurs that frame for movement lost efficacy, can make water inlet and dewatering outlet open simultaneously, extraction pipeline and atmosphere UNICOM, cause extraction pipeline decompression.
Summary of the invention
The technical problem to be solved in the present invention is the defect that overcomes prior art, invents a kind of automatic water drainage device for methane gas extraction pipeline.The present invention adopts the executive component that single-acting pneumatic ball valve and double acting pneumatic ball valve are intake and discharged water as tailrace control the water inlet of tailrace and discharge water.Under bleed pressure effect, realize and discharging water fast.The switching of pneumatic ball valve is realized by the action of the elements such as air valve, ball float, magnet.When tailrace remarkable action or bleed pressure are when too low, the spring in single-acting pneumatic ball valve moves to close tailrace as energy storage link, ensures the pressure security of methane gas extraction pipeline.The feature such as tailrace of the present invention has that the efficiency of discharging water is high, simple in structure, working stability, decompression are closed automatically.
The technical solution used in the present invention is the efficient automatic water drainage device of a kind of coal mine gas extraction pipeline, it is characterized in that: tailrace is made up of tailrace cylinder assembly I, cover assembly II and flat floating ball component III three parts;
Tailrace cylinder assembly I is made up of double acting pneumatic ball valve 1, single-acting pneumatic ball valve 2, cylindrical shell 3, quiet guide rod 19; Double acting pneumatic ball valve 1 is installed on the b place, dewatering outlet of cylindrical shell 3, and single-acting pneumatic ball valve 2 is installed on the water inlet a place of cylindrical shell 3; Quiet guide rod 19 lower ends are vertically installed on cylindrical shell 3 bottoms with vertical screwed hole by the external screw thread of its bottom, and insert in the flat ball float guide rod 13 of hollows quiet guide rod 19 upper ends;
Cover assembly II is made up of upper cover 4, little upper cover 5, upper cover magnet 6, air valve 7, cover clamp 8, follower bolt 9, moving guide rod 10, straight pin 11, upper bonnet bolt 15, upper box nut 16, upper lid gasket 17, sealing ring 18; Air valve 7 is installed on little upper cover 5 by cover clamp 8 and follower bolt 9; Upper cover magnet 6 is installed on the bottom of little upper cover 5 by thread connection, moving guide rod 10 is installed on the bottom of air valve 7 by thread connection, on moving guide rod 10, has the cylinder pin hole vertical with its axis direction; Little upper cover 5 is installed in the centre bore of upper cover 4 by the mode of welding; Sealing ring 18 is arranged on the flange of cylindrical shell 3 upper surfaces, uses bonnet bolt 15, upper box nut 16 and upper lid gasket 17 upper cover 4 is fixedly connected with and is sealed with cylindrical shell 3;
Flat floating ball component III is made up of flat ball float 12, flat ball float guide rod 13, flat ball float magnet 14; Flat ball float guide rod 13 hollows fluting, upper end is by the flat ball float magnet 14 of thread connection, and lower end is welded in flat ball float 12; Upper cover magnet 6 and flat ball float magnet 14 polarity are installed in opposite directions; Flat ball float 12 forms closing cylinder by steel sheet welding; Straight pin 11 inserts in the cylinder pin hole of moving guide rod 10; Moving guide rod 10 injects in flat ball float guide rod 13.The relative motion of the moving guide rod 10 of this structural limitations and flat ball float guide rod 13 is on its axis direction, and the relative displacement limit is the length of flat ball float stem guiding trough.
The invention has the beneficial effects as follows and adopt the executive component that single-acting pneumatic ball valve and double acting pneumatic ball valve are intake and discharged water as tailrace control the water inlet of tailrace and discharge water, the switching of pneumatic ball valve is realized by the action of the elements such as air valve, ball float, magnet, under bleed pressure effect, realizes and discharging water fast.When tailrace remarkable action or bleed pressure are when too low, the spring in single-acting pneumatic ball valve moves to close tailrace as energy storage link, ensures the pressure security of methane gas extraction pipeline.Tailrace of the present invention is for the jettison gear of the efficient discharge of methane gas extraction pipeline ponding, the feature such as have that the efficiency of discharging water is high, simple in structure, working stability, decompression are closed automatically, can realize efficient, safety, stable, firedamp drainage extraction pipeline ponding automatically.
Brief description of the drawings
Fig. 1 is tailrace internal construction schematic diagram of the present invention.In figure: 1 double acting pneumatic ball valve, 2 single-acting pneumatic ball valves, 3 cylindrical shells, 4 upper covers, 5 little upper covers, 6 upper cover magnet, 7 air valves, 8 cover clamps, 9 follower bolts, 10 moving guide rods, 11 straight pins, 12 flat ball floats, 13 flat ball float guide rods, 14 flat ball float magnet, bonnet bolt on 15, box nut on 16, lid gasket on 17,18 sealing rings, 19 quiet guide rods, a water inlet, b dewatering outlet.
Fig. 2 is the scheme of installation of the present invention in methane gas extraction pipeline.In figure: 1 equilibrium pressure pipeline, 2 equilibrium pressure valves, 3 gas pipelines, 4 inlet pipeline valves, 5 inlet pipelines, 6 sources of the gas.
Detailed description of the invention
Describe the concrete enforcement of patent of the present invention in detail below in conjunction with technical scheme and accompanying drawing.Accompanying drawing 2 is the present invention's scheme of installations in methane gas extraction pipeline, tailrace upper end is connected with source of the gas 6, tailrace accesses gas pipeline 3 by equilibrium pressure pipeline 1 and equilibrium pressure valve 2, and pipeline ponding enters tailrace by inlet pipeline valve 4 and inlet pipeline 5.
As shown in Figure 1, tailrace is under original state, and cylindrical shell 3 is interior anhydrous and without external air source, and flat floating ball component III deadweight is greater than the suction between upper cover magnet 6 and flat ball float magnet 14, leave behind and move guide rod 10, and self is in low level, and single-acting pneumatic ball valve 2 is closed.When external air source provides enough pressure, single-acting pneumatic ball valve 2 is opened, the interior negative pressure of cylindrical shell 3, and double acting pneumatic ball valve 1 is closed.At water inlet state, valve rod low level, the interior negative pressure of cylindrical shell 3, single-acting pneumatic ball valve 2 is held open, and double acting pneumatic ball valve 1 keeps closing, and flat ball float 12 upper surfaces are higher than water surface 20mm, and flat floating ball component III floats with the water surface.In the time that the distance between upper cover magnet 6 and flat ball float magnet 14 is less than 10mm, the suction between upper cover magnet 6 and flat ball float magnet 14 makes flat floating ball component III move to a high position on rapidly.Groove on flat ball float guide rod 13 promotes moving guide rod 10 by straight pin 11 and air valve 7 spools are extremely high-order, air valve 7 states switch, single-acting pneumatic ball valve 2 is closed, and the interior malleation of cylindrical shell 3 drives double acting pneumatic ball valve 1 to open, tailrace by the state transitions of intaking to the state of discharging water.At the state of discharging water, when 1Kg suction, 1Kg buoyancy and while equating with the deadweight of the flat floating ball component III of 2Kg, flat floating ball component III will be thrown off upper cover magnet 6 and be fallen.The about 49mm that falls departs from magnet suction scope, and the water surface has by a small margin and rises, but is not enough to send flat floating ball component III back to magnet suction scope, and continuation discharges water.When flat ball float 12 upper surfaces are higher than water surface 24mm, on flat ball float guide rod 13, the top edge of groove touches straight pin 11, due at least 0.3MPa of the interior malleation of cylindrical shell 3 now, moving upwarding pressure of guide rod 10 is about to 2.4Kg, be greater than flat floating ball component III deadweight, therefore ball float no longer moves down, and continuation discharges water.When the water surface drops to below b upper end, dewatering outlet, the interior decompression of cylindrical shell 3, when pressure is less than 0.25MPa, flat floating ball component III falls to low level, and single-acting pneumatic ball valve 2 is opened, and double acting pneumatic ball valve 1 is closed, and tailrace enters into water state.So far, complete the circulation of entering to discharge water.
Through experiment and on-the-spot test, this tailrace speed of discharging water reaches 100-500L/min, has improved greatly the efficiency that discharges water.And in use stable performance, reliability is high.
Claims (1)
1. a coal mine gas extraction pipeline automatic water drainage device, is characterized in that: tailrace is made up of tailrace cylinder assembly (I), cover assembly (II) and flat floating ball component (III) three parts;
Tailrace cylinder assembly (I) is made up of double acting pneumatic ball valve (1), single-acting pneumatic ball valve (2), cylindrical shell (3), quiet guide rod (19); Double acting pneumatic ball valve (1) is installed on the dewatering outlet (b) of cylindrical shell (3) and locates, and single-acting pneumatic ball valve (2) is installed on the water inlet (a) of cylindrical shell (3) and locates; Quiet guide rod (19) lower end is vertically installed on cylindrical shell (3) bottom with vertical screwed hole by the external screw thread of its bottom, and insert in the flat ball float guide rod (13) of hollow quiet guide rod (19) upper end;
Cover assembly (II) is made up of upper cover (4), little upper cover (5), upper cover magnet (6), air valve (7), cover clamp (8), follower bolt (9), moving guide rod (10), straight pin (11), upper bonnet bolt (15), upper box nut (16), upper lid gasket (17), sealing ring (18); Air valve (7) is installed on little upper cover (5) by cover clamp (8) and follower bolt (9); Upper cover magnet (6) is installed on the bottom of little upper cover (5) by thread connection, moving guide rod (10) is installed on the bottom of air valve (7) by thread connection, on moving guide rod (10), have the cylinder pin hole vertical with its axis direction; Little upper cover (5) is installed in the centre bore of upper cover (4) by the mode of welding; Sealing ring (18) is arranged on the flange of cylindrical shell (3) upper surface, uses bonnet bolt (15), upper box nut (16) and upper lid gasket (17) upper cover (4) is fixedly connected with and is sealed with cylindrical shell (3);
Flat floating ball component (III) is made up of flat ball float (12), flat ball float guide rod (13), flat ball float magnet (14); Flat ball float guide rod (13) hollow fluting, upper end is by the flat ball float magnet of thread connection (14), and lower end is welded in flat ball float (12); Upper cover magnet (6) and flat ball float magnet (14) polarity are installed in opposite directions; Flat ball float (12) forms closing cylinder by steel sheet welding; Straight pin (11) inserts in the cylinder pin hole of moving guide rod (10); Moving guide rod (10) injects in flat ball float guide rod (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410198960.3A CN103967520B (en) | 2014-05-12 | 2014-05-12 | The efficient automatic water drainage device of a kind of coal mine gas extraction pipeline |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410198960.3A CN103967520B (en) | 2014-05-12 | 2014-05-12 | The efficient automatic water drainage device of a kind of coal mine gas extraction pipeline |
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| CN103967520A true CN103967520A (en) | 2014-08-06 |
| CN103967520B CN103967520B (en) | 2016-04-13 |
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| CN201410198960.3A Expired - Fee Related CN103967520B (en) | 2014-05-12 | 2014-05-12 | The efficient automatic water drainage device of a kind of coal mine gas extraction pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586129A (en) * | 2021-08-05 | 2021-11-02 | 重庆大学 | Automatic water drainage device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201610761U (en) * | 2010-03-17 | 2010-10-20 | 宋德利 | General-purpose pneumatic automatic water drainage device |
| CN101994907A (en) * | 2009-08-19 | 2011-03-30 | 淮南矿业(集团)有限责任公司 | Drainage system and method for gas pipeline |
| CN202090948U (en) * | 2011-06-16 | 2011-12-28 | 张东卫 | Pneumatic control and automatic-deslagging water drain device for mine gas extraction pipeline |
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2014
- 2014-05-12 CN CN201410198960.3A patent/CN103967520B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994907A (en) * | 2009-08-19 | 2011-03-30 | 淮南矿业(集团)有限责任公司 | Drainage system and method for gas pipeline |
| CN201610761U (en) * | 2010-03-17 | 2010-10-20 | 宋德利 | General-purpose pneumatic automatic water drainage device |
| CN202090948U (en) * | 2011-06-16 | 2011-12-28 | 张东卫 | Pneumatic control and automatic-deslagging water drain device for mine gas extraction pipeline |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586129A (en) * | 2021-08-05 | 2021-11-02 | 重庆大学 | Automatic water drainage device |
| CN113586129B (en) * | 2021-08-05 | 2023-11-10 | 重庆大学 | Automatic water draining device |
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| CN103967520B (en) | 2016-04-13 |
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