CN105697049A - Automatic air regulation protective device and method for interval series ventilation of heading end - Google Patents
Automatic air regulation protective device and method for interval series ventilation of heading end Download PDFInfo
- Publication number
- CN105697049A CN105697049A CN201610051124.1A CN201610051124A CN105697049A CN 105697049 A CN105697049 A CN 105697049A CN 201610051124 A CN201610051124 A CN 201610051124A CN 105697049 A CN105697049 A CN 105697049A
- Authority
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- China
- Prior art keywords
- pressure
- booster
- control module
- comprehensive control
- frequency conversion
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- 238000009423 ventilation Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000001681 protective effect Effects 0.000 title abstract 2
- 238000006243 chemical reaction Methods 0.000 claims description 50
- 230000003068 static effect Effects 0.000 description 10
- 238000003915 air pollution Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/04—Air ducts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
- Ventilation (AREA)
Abstract
The invention relates to automatic air regulation protective device and method for interval series ventilation of a heading end. The device comprises more than two local fans, a flexible air barrel, a differential pressure transmitter and a variable-frequency comprehensive control module; the local fans are connected in series by the flexible air barrel, the positive pressure end of the differential pressure transmitter stretches to the front of the exhaust inlet of the succeeding local fan in the prior flexible air barrel, and the negative pressure end of the differential pressure transmitter is arranged outside the flexible air barrel; and the differential pressure transmitter is connected with the variable-frequency comprehensive control module, and the variable-frequency comprehensive control module is connected with the local fans. According to the method, the local fans are started, the differential pressure transmitter is used for measuring the pressure difference of the positive pressure end and the negative pressure end, the pressure difference is transmitted to the variable-frequency comprehensive control module for processing pressure difference data, and the air volume of the serially-connected local fans can be automatically controlled by changing the frequency of the serially-connected local fans. The device can avoid sinkage or collapse of the flexible air barrel, so as to guarantee the safety of the local fans, extend the local ventilating and air supply distance and improve the air supply quality and safety of a driving working face.
Description
Technical field
The present invention relates to a kind of heading end spaced series ventilation and automatically adjust wind protection device and method, be specifically related to a kind of mine and wind protection device and method is adjusted in the ventilation of Tunnel Engineering middle and long distance dead face heading end spaced series automatically。
Background technology
In mine laneway and engineering tunnel work progress, especially development period, the dead face (tunnel) of distance is generally tunneled, because ventilation distance is longer, separate unit booster cannot overcome along journey flowing resistance, generally adopts series connection 2 and above booster to ventilate。Concentration series ventilation and spaced series can be divided into ventilate by booster arrangement。Owing to spaced series is used widely than concentrating series connection inleakage little, but, in spaced series when the suction air volume of a rear Fans is more than the air output of previous Fans end air duct, flexible air duct can be inhaled flat, partially flexible air duct can be sucked blower fan time serious, a Fans burn-down of electric motor after causing。
Yunnan Yuqing China of Xi Ye group etc. (differential pressure compensator application [J] in long blind heading series ventilation. China's mines engineering, 2005.08,34 volume 4 phases) devise differential pressure compensator and be connected between two Fans, the air pollution outside air duct can be automatically controlled and enter air duct, it is achieved pressure balance inside and outside air duct。Scheme disclosed in CN203130137U, is set space and be automatically drawn in tunnel dirty wind to realize pressure balance inside and outside air duct by staying at the hard of two-stage booster and flexible air duct seam。But, both modes, rear stage booster all can suck the dirty wind after scrubbing development end, containing dust and toxic and harmful, causes that dirty wind circulates at driving face, reduces air supply of working face quality, be unfavorable for safety in production。
Summary of the invention
The technical problem to be solved is; overcome the drawbacks described above that prior art exists; there is provided one to be automatically obtained the series ventilation machine front stage air quantity equilibrium of supply and demand, it is to avoid flexible air duct is inhaled flat, and the measured heading end spaced series of air feed matter ventilates and automatically adjusts wind protection device。
The present invention to solve the technical problem that further; overcome the drawbacks described above that prior art exists; thering is provided a kind of and conscientiously ensure booster safety, can effectively extend local ventilation air feed distance, the heading end spaced series of raising driving face air feed quality ventilates and automatically adjusts wind guard method。
The technical solution adopted for the present invention to solve the technical problems is as follows: a kind of heading end spaced series ventilates and automatically adjusts wind protection device, including plural booster, flexible air duct, differential pressure transmitter and frequency conversion comprehensive control module；Described booster is connected in series by flexible air duct, and before the positive pressure side of described differential pressure transmitter stretches into the rear stage booster inlet scoop in previous stage flexibility air duct, negative pressure end is placed in outside described flexible air duct；Described differential pressure transmitter is connected with frequency conversion comprehensive control module, and frequency conversion comprehensive control module is connected with booster。The flexible air duct of described rear stage booster and previous stage booster is joined directly together, and seam does not interspace。What the positive pressure side of described differential pressure transmitter was measured is the static air pressure in flexible air duct, and what negative pressure end was measured is outside flexible air duct, i.e. static air pressure in tunnel。Described frequency conversion comprehensive control module can change out-put supply frequency automatically according to the data that differential pressure transmitter is measured, to balance the series ventilation machine front stage air quantity equilibrium of supply and demand。
Booster described in apparatus of the present invention and frequency conversion comprehensive control module are by underground power supply used net power supply, and differential pressure transmitter is powered by frequency conversion comprehensive control module, and underground power supply used net can directly be powered, it is possible to power supply in installing in apparatus of the present invention, storage limit, limit powers。
The present invention solves its technical problem further and be the technical scheme is that wind guard method is adjusted in a kind of heading end spaced series ventilation automatically; open booster; differential pressure transmitter measures the positive pressure side in previous stage flexibility air duct and the pressure reduction of the negative pressure end outside flexible air duct; and pressure difference data is sent to frequency conversion comprehensive control module; frequency conversion comprehensive control module processes pressure difference data; by changing the suction air volume of the Automatic Frequency Control series connection booster of the booster of rear stage series connection, it is achieved ventilate and automatically adjust wind protection。
Further, when malleation end pressure is more than negative pressure end pressure, described frequency conversion comprehensive control module improves output frequency, to increase rear stage booster suction air volume。When malleation end pressure is more than negative pressure end pressure, illustrate that previous stage booster air output is more than rear stage booster suction air volume, by improving the out-put supply frequency of rear stage booster, previous stage booster air output and rear stage booster suction air volume reach balance, the wind supply quantity in steady operation face。
Further, when malleation end pressure is less than negative pressure end pressure, described frequency conversion comprehensive control module reduces output frequency, to reduce rear stage booster suction air volume。When malleation end pressure is less than negative pressure end pressure, illustrate that previous stage booster air output is less than rear stage booster suction air volume, by reducing the out-put supply frequency of rear stage booster, previous stage booster air output and rear stage booster suction air volume reach balance, it is to avoid previous stage flexibility air duct is inhaled flat。
Further, when malleation end pressure is equal to negative pressure end pressure, described frequency conversion comprehensive control module keeps output frequency constant, does not change the suction air volume of rear stage booster。When malleation end pressure is equal to negative pressure end pressure, illustrate that previous stage booster air output is equal to rear stage booster suction air volume。
Further, when the pressure reduction of positive pressure side and negative pressure end is more than pressure reduction limit value, frequency conversion comprehensive control module cuts off local ventilation electromechanical source, closes booster, it is achieved automatic shutdown。Automatic shutdown can be effectively protected rear stage booster safety, it is to avoid booster burns because electric current is excessive。
Pressure reduction limit value and the ratio of pressure reduction difference and frequency shift between the booster of described series connection shift to an earlier date typing frequency conversion comprehensive control module。
The work process of apparatus of the present invention is: first order booster by the fresh distinguished and admirable second level booster being delivered to series connection, by that analogy, distinguished and admirable is delivered to the multistage boosters such as the third level of series connection, the fourth stage by fresh by flexible air duct。The positive pressure side stretching into the differential pressure transmitter before the rear stage booster inlet scoop in previous stage flexibility air duct constantly measures the static air pressure in flexible air duct, is placed in the described outer negative pressure end of flexible air duct and constantly measures the static air pressure in the outer tunnel of flexible air duct。Described differential pressure transmitter is connected with frequency conversion comprehensive control module, and frequency conversion comprehensive control module is connected with booster。When malleation end pressure is more than negative pressure end pressure, frequency conversion comprehensive control module improves the out-put supply frequency of rear stage booster to increase rear stage booster suction air volume；When malleation end pressure is less than negative pressure end pressure, frequency conversion comprehensive control module reduces the out-put supply frequency of rear stage booster to reduce rear stage booster suction air volume；When malleation end pressure is equal to negative pressure end pressure, frequency conversion comprehensive control module keeps output frequency constant, does not change rear stage booster suction air volume；When the pressure reduction of positive pressure side and negative pressure end is more than pressure reduction limit value, frequency conversion comprehensive control module cuts off local ventilation electromechanical source, closes booster, it is achieved automatic shutdown。
The operation principle of the present invention is: by measuring blast inside and outside the flexible air duct of the series connection nearly distinguished and admirable entrance of booster, series connection local ventilation unit frequency is changed according to leeway inside and outside air duct, regulate series connection booster suction air volume, be automatically obtained the front stage local ventilation fan delivery equilibrium of supply and demand。
Apparatus of the present invention are installed simple, and Fundamentals of Measurement parameter is static pressure in air duct, in tunnel, and static pressure distribution is uniform, measures simple and reliable。Use apparatus of the present invention that flexible air duct can be avoided to be inhaled flat, conscientiously ensure and booster safety can effectively extend local ventilation air feed distance, improve driving face air feed quality and air feed safety, scientific and effective。
Accompanying drawing explanation
Fig. 1 is that wind protection device overall structure schematic diagram is adjusted in the ventilation of embodiment of the present invention heading end spaced series automatically。
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the invention will be further described。
Embodiment 1
As it is shown in figure 1, described heading end spaced series ventilates automatically adjusts wind protection device, including three boosters 1, flexible air duct 2, differential pressure transmitter 3 and frequency conversion comprehensive control module 4；Described booster 1 is connected in series by flexible air duct 2, the positive pressure side of described differential pressure transmitter 3 (+) stretch into rear stage booster 1 inlet scoop in previous stage flexibility air duct 2 before, negative pressure end (-) is placed in outside described flexible air duct 2, described differential pressure transmitter 3 is connected with frequency conversion comprehensive control module 4, and frequency conversion comprehensive control module 4 is connected with booster 1。The flexible air duct 2 of described rear stage booster 1 and previous stage booster 1 is joined directly together, and seam does not interspace。The positive pressure side of described differential pressure transmitter 3 (+) what measure is the static air pressure in flexible air duct 2, what negative pressure end (-) was measured is outside flexible air duct 2, i.e. static air pressure in tunnel。Described booster 1 and frequency conversion comprehensive control module 4 are by underground power supply used net power supply, and differential pressure transmitter 3 is powered by frequency conversion comprehensive control module 4。
A kind of heading end spaced series ventilates and automatically adjusts wind guard method: open booster 1; differential pressure transmitter 3 measure positive pressure side in previous stage flexibility air duct 2 (+) and flexible air duct 2 outside the pressure reduction of negative pressure end (-); and pressure difference data is sent to frequency conversion comprehensive control module 4; frequency conversion comprehensive control module 4 processes pressure difference data; by changing the suction air volume of the Automatic Frequency Control series connection booster 1 of the booster 1 of rear stage series connection, it is achieved ventilate and automatically adjust wind protection。When positive pressure side (+) pressure more than negative pressure end (-) pressure time, frequency conversion comprehensive control module 4, by improving the out-put supply frequency of rear stage booster 1, increases the suction air volume of rear stage booster 1；When positive pressure side (+) pressure less than negative pressure end (-) pressure time, frequency conversion comprehensive control module 4, by reducing the out-put supply frequency of rear stage booster 1, reduces the suction air volume of rear stage booster 1；When positive pressure side (+) pressure equal to negative pressure end (-) pressure time, frequency conversion comprehensive control module 4 keeps output frequency constant, does not change the suction air volume of rear stage local ventilation 1；When the pressure reduction of positive pressure side and negative pressure end is more than pressure reduction limit value, frequency conversion comprehensive control module 4 cuts off booster 1 power supply, closes booster 1, it is achieved automatic shutdown。Pressure reduction limit value and the ratio of pressure reduction difference and frequency shift between the booster 1 of described series connection shift to an earlier date typing frequency conversion comprehensive control module 4。
The work process of apparatus of the present invention is: first order booster 1 is by flexible air duct 2 by the fresh distinguished and admirable second level booster 1 being delivered to series connection, and second level booster 1 distinguished and admirable is delivered to third level booster 1 by flexible air duct 2 by fresh。Stretch into the differential pressure transmitter 3 before second level booster 1 inlet scoop in first order flexibility air duct 2 positive pressure side (+) constantly measure the static air pressure in flexible air duct 2, be placed in described flexible air duct 2 outer negative pressure end (-) and constantly measure the static air pressure in the flexibility outer tunnel of air duct 2。Described differential pressure transmitter 3 is connected with frequency conversion comprehensive control module 4, and frequency conversion comprehensive control module 4 is connected with booster 1。When positive pressure side (+) pressure more than negative pressure end (-) pressure time, frequency conversion comprehensive control module 4 is by improving the out-put supply frequency of rear stage booster 1 to increase the suction air volume of rear stage booster 1；When positive pressure side (+) pressure less than negative pressure end (-) pressure time, frequency conversion Comprehensive Control mould 4 pieces by reduce rear stage booster 1 out-put supply frequency to reduce the suction air volume of rear stage booster 1；When positive pressure side (+) pressure equal to negative pressure end (-) pressure time, frequency conversion comprehensive control module 4 keeps output frequency constant, does not change rear stage booster suction air volume；When the pressure reduction of positive pressure side and negative pressure end is more than pressure reduction limit value, frequency conversion comprehensive control module 4 cuts off booster 1 power supply, closes booster 1, it is achieved automatic shutdown。
Claims (10)
1. a heading end spaced series ventilates and automatically adjusts wind protection device, it is characterised in that: include plural booster, flexible air duct, differential pressure transmitter and frequency conversion comprehensive control module；Described booster is connected in series by flexible air duct, and before the positive pressure side of described differential pressure transmitter stretches into the rear stage booster inlet scoop in previous stage flexibility air duct, negative pressure end is placed in outside described flexible air duct；Described differential pressure transmitter is connected with frequency conversion comprehensive control module, and frequency conversion comprehensive control module is connected with booster。
2. carry out the ventilation of heading end spaced series with device described in claim 1 and automatically adjust wind guard method; it is characterized in that: open booster; differential pressure transmitter measures the positive pressure side in previous stage flexibility air duct and the pressure reduction of the negative pressure end outside flexible air duct; and pressure difference data is sent to frequency conversion comprehensive control module; frequency conversion comprehensive control module processes pressure difference data; by changing the suction air volume of the Automatic Frequency Control series connection booster of the booster of rear stage series connection, it is achieved ventilate and automatically adjust wind protection。
3. wind guard method is adjusted in the ventilation of heading end spaced series automatically according to claim 2, it is characterised in that: when malleation end pressure is more than negative pressure end pressure, described frequency conversion comprehensive control module improves output frequency, to increase rear stage booster suction air volume。
4. heading end spaced series according to Claims 2 or 3 ventilates and automatically adjusts wind guard method, it is characterised in that: when malleation end pressure is less than negative pressure end pressure, described frequency conversion comprehensive control module reduces output frequency, to reduce rear stage booster suction air volume。
5. heading end spaced series according to Claims 2 or 3 ventilates and automatically adjusts wind guard method; it is characterized in that: when malleation end pressure is equal to negative pressure end pressure; described frequency conversion comprehensive control module keeps output frequency constant, does not change the suction air volume of rear stage booster。
6. wind guard method is adjusted in the ventilation of heading end spaced series automatically according to claim 4; it is characterized in that: when malleation end pressure is equal to negative pressure end pressure; described frequency conversion comprehensive control module keeps output frequency constant, does not change the suction air volume of rear stage booster。
7. heading end spaced series according to Claims 2 or 3 ventilates and automatically adjusts wind guard method; it is characterized in that: when the pressure reduction of positive pressure side and negative pressure end is more than pressure reduction limit value; frequency conversion comprehensive control module cuts off local ventilation electromechanical source, closes booster, it is achieved automatic shutdown。
8. wind guard method is adjusted in the ventilation of heading end spaced series automatically according to claim 4; it is characterized in that: when the pressure reduction of positive pressure side and negative pressure end is more than pressure reduction limit value; frequency conversion comprehensive control module cuts off local ventilation electromechanical source, closes booster, it is achieved automatic shutdown。
9. wind guard method is adjusted in the ventilation of heading end spaced series automatically according to claim 5; it is characterized in that: when the pressure reduction of positive pressure side and negative pressure end is more than pressure reduction limit value; frequency conversion comprehensive control module cuts off local ventilation electromechanical source, closes booster, it is achieved automatic shutdown。
10. wind guard method is adjusted in the ventilation of heading end spaced series automatically according to claim 6; it is characterized in that: when the pressure reduction of positive pressure side and negative pressure end is more than pressure reduction limit value; frequency conversion comprehensive control module cuts off local ventilation electromechanical source, closes booster, it is achieved automatic shutdown。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610051124.1A CN105697049B (en) | 2016-01-27 | 2016-01-27 | A kind of heading end spaced series ventilation is automatic to adjust wind protective device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610051124.1A CN105697049B (en) | 2016-01-27 | 2016-01-27 | A kind of heading end spaced series ventilation is automatic to adjust wind protective device and method |
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| Publication Number | Publication Date |
|---|---|
| CN105697049A true CN105697049A (en) | 2016-06-22 |
| CN105697049B CN105697049B (en) | 2018-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610051124.1A Active CN105697049B (en) | 2016-01-27 | 2016-01-27 | A kind of heading end spaced series ventilation is automatic to adjust wind protective device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869984A (en) * | 2017-03-02 | 2017-06-20 | 中国矿业大学 | A kind of long distance driving tunnel portable blower series ventilation automatically adjusts protection device |
| CN109931090A (en) * | 2019-04-19 | 2019-06-25 | 陈严怀 | Local ventilation fan delivery compensation device |
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| JP2007278022A (en) * | 2006-04-11 | 2007-10-25 | Sakamoto Shokai:Kk | Air duct device and ventilator in tunnel gallery |
| CN203743031U (en) * | 2013-11-30 | 2014-07-30 | 南阳防爆集团股份有限公司 | Intelligent local ventilation system for coal mines |
| CN204646288U (en) * | 2015-04-03 | 2015-09-16 | 广东梅雁吉祥水电股份有限公司 | A kind of mine fan |
-
2016
- 2016-01-27 CN CN201610051124.1A patent/CN105697049B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2007278022A (en) * | 2006-04-11 | 2007-10-25 | Sakamoto Shokai:Kk | Air duct device and ventilator in tunnel gallery |
| CN203743031U (en) * | 2013-11-30 | 2014-07-30 | 南阳防爆集团股份有限公司 | Intelligent local ventilation system for coal mines |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869984A (en) * | 2017-03-02 | 2017-06-20 | 中国矿业大学 | A kind of long distance driving tunnel portable blower series ventilation automatically adjusts protection device |
| CN106869984B (en) * | 2017-03-02 | 2019-08-27 | 中国矿业大学 | A kind of long distance driving tunnel portable blower series ventilation automatic adjustment protective device |
| CN109931090A (en) * | 2019-04-19 | 2019-06-25 | 陈严怀 | Local ventilation fan delivery compensation device |
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| Publication number | Publication date |
|---|---|
| CN105697049B (en) | 2018-06-12 |
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