CN103850698B - Jet-flow ejector capable of automatically diluting upper corner gas - Google Patents
Jet-flow ejector capable of automatically diluting upper corner gas Download PDFInfo
- Publication number
- CN103850698B CN103850698B CN201410123068.9A CN201410123068A CN103850698B CN 103850698 B CN103850698 B CN 103850698B CN 201410123068 A CN201410123068 A CN 201410123068A CN 103850698 B CN103850698 B CN 103850698B
- Authority
- CN
- China
- Prior art keywords
- jet
- gas
- upper corner
- flow ejector
- sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007865 diluting Methods 0.000 title abstract 3
- 238000009423 ventilation Methods 0.000 claims abstract description 16
- 230000006698 induction Effects 0.000 claims description 10
- 238000010790 dilution Methods 0.000 claims description 6
- 239000012895 dilution Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003245 coal Substances 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Jet Pumps And Other Pumps (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention provides a novel jet-flow ejector capable of automatically diluting upper corner gas and belongs to the field of coal mine safety. The advancing mode of an underground coal mine working face generally is a U-shaped draw-back mode, a ventilation mode adopts an ascensional ventilation mode, and the ascensional ventilation mode has a shortcoming that the upper corner gas is easy to accumulate. The solution scheme is to employ a jet-flow ejector which is low in cost, good in effect and capable of diluting the gas. The jet-flow ejector is connected with an underground pressure ventilation pipe through a sensor switch; when a sensor detects that the upper corner gas is over limit, the sensor switch is turned on and air is supplied to the jet-flow ejector through the pressure ventilation pipe; when the air is supplied, the internal pressure of the jet-flow ejector is reduced, and therefore, the gas can be absorbed into the jet-flow ejector, then discharged into a roadway by the jet-flow ejector, and finally discharged to the outside along with an airflow in the roadway. When the concentration of the gas is reduced to a certain value, the sensor switch is turned off, and the pressure ventilation pipe stops supplying air to the jet-flow ejector. The jet-flow ejector is simple, novel and unique in structure, convenient to use and operate, is a great innovation for preventing the gas over limit, and is remarkable in economic effects.
Description
Technical field
The present invention relates to a kind of novel jet flow injector of face upper corner angle gas dilution, it is corner on a kind of automatic dilution
The jet ejector of angle gas.
Background technology
At present, underground coal mine advance of the face mode generally adopts u-shaped retrusive, because gas density is less than air,
Down-hole can hoist flowing, is then conducive to gas to discharge using ascensional ventilation.And it is exactly upper corner that ascensional ventilation has a drawback
Gas easily gathers.If processing not in time, there is gas explosion dangerous when reaching finite concentration, serious threat mine safety life
Produce；Directly wash away gas at upper corner according to pressure ventilation pipe air feed, then the distinguished and admirable disorder in local easily occurs.Be badly in need of a kind of low cost,
Effect is good, can be automatically by the jet ejector of face upper corner angle gas dilution.
Content of the invention
The purpose of the present invention is that and is provided that a kind of low cost, effect are good, can dilute face upper corner angle gas
Jet ejector.
The present invention includes sensor, and sensor and sensing switch are connected by electric wire, and blast pipe extend in induction tunnel,
Blast pipe is connected to form with underground pressure airduct by sensing switch.This jet ejector passes through sensing switch and underground pressure air
Pipe is connected, and when sensor detects gas at upper corner and transfinites, sensing switch is opened, and is supplied to jet ejector by pressure ventilation pipe
Wind, during air feed, in jet ejector, pressure reduces, and therefore gas can be inhaled in fluidic sensor, enters with jet ejector
In tunnel, with the distinguished and admirable discharge in tunnel.After gas density drops to certain value, sensing switch close, pressure ventilation pipe stop to
Jet ejector air feed.The jet ejector of automatic dilution gas at upper corner is it is characterised in that sensing switch control can be passed through
The operation of ejector processed and stopping.
The present invention is applied to stope upper corner.
The present invention due to using said mechanism be blast pipe extend in induction tunnel and by sensing switch control air intake,
On the one hand gas at upper corner can be diluted by jet ejector, on the other hand also reach the effect of automatization.
Brief description:
Fig. 1 is the structure chart of jet ejector
Fig. 2 is the profile of jet ejector
Fig. 3 is the installation site figure in practical application
Fig. 4 is distinguished and admirable flow graph during jet ejector work
Specific embodiment:
The present invention makees below in conjunction with drawings and Examples with detailed description.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, the present invention includes the present invention and includes sensor (1), sensor (1) and sensor
Switch (2) passes through holding wire (3) and connects, and blast pipe (4) extend in induction tunnel, blast pipe (4) pass through sensing switch (2) with
Underground pressure airduct (6) is connected.
In stope (7) upper corner, jet ejector is connected on pressure ventilation pipe, sensor and jet ejector are stretched
Enter in goaf (8), when sensor (1) detects gas at upper corner and transfinites, sensing switch (2) is opened, by pressure ventilation pipe
To jet ejector air feed, during air feed, in jet ejector, pressure reduces, and therefore gas can be inhaled in fluidic sensor, with
Jet ejector enters in tunnel, and with the distinguished and admirable discharge in tunnel, the arrow of Fig. 4 is wind direction.When gas density drops to one
After definite value, sensing switch is closed, and pressure ventilation pipe stops to jet ejector air feed.When again gas at upper corner occurring and transfiniting,
Sensing switch reopens, and so go round and begin again work.Present configuration is simple, novel, unique, using operating aspect, is
Gas at upper corner from transfiniting one is prevented to innovate greatly, popularization and application have larger Social benefit and economic benefit.
Claims (1)
1. a kind of new type auto dilution gas at upper corner jet ejector it is characterised in that:
Including sensor (1), sensing switch (2), holding wire (3), blast pipe (4), induction tunnel (5), wherein
Sensor (1) and sensing switch (2) pass through holding wire (3) and connect, and blast pipe (4) extend in induction tunnel (5), air intake
Pipe (4) is connected with underground pressure airduct (6) by sensing switch (2)；
Blast pipe (4) bends 90 degree afterwards vertically into induction tunnel (5) and extends in induction tunnel (5), thus being formed with induction tunnel (5)
Internal and external casing structure；
Sensing switch (2) controls operation and the stopping of jet ejector；
During use, sensor (1) is placed on the upper corner of stope (7), jet ejector is connected on pressure ventilation pipe (6),
Jet induction tunnel (5) is also deep in the upper corner of stope (7), transfinites when sensor (1) detects gas at upper corner
When, sensing switch (2) is opened, by pressure ventilation pipe (6) to jet ejector air feed, thus driving the gas of jet induction tunnel (5)
Stream flowing is to dilute the gas density of the upper corner of stope (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410123068.9A CN103850698B (en) | 2014-03-31 | 2014-03-31 | Jet-flow ejector capable of automatically diluting upper corner gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410123068.9A CN103850698B (en) | 2014-03-31 | 2014-03-31 | Jet-flow ejector capable of automatically diluting upper corner gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103850698A CN103850698A (en) | 2014-06-11 |
| CN103850698B true CN103850698B (en) | 2017-01-25 |
Family
ID=50858791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410123068.9A Expired - Fee Related CN103850698B (en) | 2014-03-31 | 2014-03-31 | Jet-flow ejector capable of automatically diluting upper corner gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103850698B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206578B (en) * | 2019-06-26 | 2021-08-13 | 淮南星系煤矿安全科技有限公司 | Deep-buried extraction method for upper corner of working face |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4157204A (en) * | 1978-07-27 | 1979-06-05 | The United States Of America As Represented By The Secretary Of The Interior | Face ventilation system for coal mines |
| CN2156942Y (en) * | 1993-05-07 | 1994-02-23 | 淮南矿业学院 | Cyclone draught dust collector |
| CN201239590Y (en) * | 2008-08-01 | 2009-05-20 | 河北冀凯实业集团有限公司 | Wet-type induced air precipitator |
| CN201596475U (en) * | 2009-12-31 | 2010-10-06 | 煤炭科学研究总院重庆研究院 | Coal mine gas injecting distribution system |
| CN201620911U (en) * | 2010-01-16 | 2010-11-03 | 李琳 | Air and water ejector for coal mine downhole gas |
| CN101864985A (en) * | 2010-06-09 | 2010-10-20 | 沈阳邦科实业有限公司 | Gas diluter |
| CN203822358U (en) * | 2014-03-31 | 2014-09-10 | 河南理工大学 | Jet ejector capable of automatically dilutingupper-corner gas |
-
2014
- 2014-03-31 CN CN201410123068.9A patent/CN103850698B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103850698A (en) | 2014-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2014109233A (en) | SYSTEM AND METHOD FOR PREVENTING A GAS EXPLOSION IN COAL MINES | |
| CN201723246U (en) | Ventilating structure for pumping and exhausting gas at coal face | |
| CN104481570A (en) | Underground blind tunnel ventilation system | |
| CN103075173A (en) | High-position inclined E-type ventilation system of coal face | |
| CN102865104A (en) | Downward extraction drilling drainage device | |
| CN103850698B (en) | Jet-flow ejector capable of automatically diluting upper corner gas | |
| CN204729128U (en) | A kind of automatic decompression device for filling plugging | |
| CN205779012U (en) | A kind of tunnel self-draining arrangement | |
| CN102230394A (en) | Secondary hole sealing system for improving coal bed gas extraction concentration | |
| CN203161272U (en) | High-position similar-E-shaped ventilation system for coal face | |
| CN203822358U (en) | Jet ejector capable of automatically dilutingupper-corner gas | |
| CN104453985A (en) | Water-sealing fire-retarding explosion-venting device and control method thereof | |
| CN103277131A (en) | Gas separating device and gas separating method | |
| CN204457860U (en) | Mine zero power siphon drainage device | |
| CN102182926A (en) | Negative pressure adjustment system of coalbed methane collecting and conveying system in coal mining area and adjustment method of negative pressure adjustment system | |
| CN205654320U (en) | Simple and easy pneumatic hole sealing slip casting device | |
| MX2017000381A (en) | Hydraulic hoisting system and method. | |
| CN103670497A (en) | Gas treatment method used when tunneled underground coal mine roadway is communicated with abandoned roadway | |
| CN204511508U (en) | A kind of gas exceeding limit automatic processing device | |
| CN204344152U (en) | A kind of down-hole dead face ventilation system | |
| CN204960968U (en) | Prevent abrupt air door scraper -trough conveyer and prevent device against wind | |
| CN202125310U (en) | Gas drainage system having automatic explosion resistance device | |
| CN202560283U (en) | Coal mine gas, explosion smoke and dust separation and ventilation device | |
| CN205779020U (en) | Prevent from discharging water the coal feeder of coal | |
| CN104514578B (en) | A kind of mining three anti-devices |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |