CN110685948A - Control method, device and processor of automatic monitoring system for local ventilation of coal mine - Google Patents
Control method, device and processor of automatic monitoring system for local ventilation of coal mine Download PDFInfo
- Publication number
- CN110685948A CN110685948A CN201910931428.0A CN201910931428A CN110685948A CN 110685948 A CN110685948 A CN 110685948A CN 201910931428 A CN201910931428 A CN 201910931428A CN 110685948 A CN110685948 A CN 110685948A
- Authority
- CN
- China
- Prior art keywords
- content
- rotating speed
- local
- ventilator
- local ventilator
- 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.)
- Granted
Links
- 239000003245 coal Substances 0.000 title claims abstract description 35
- 238000009423 ventilation Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000012544 monitoring process Methods 0.000 title claims abstract description 26
- 230000005641 tunneling Effects 0.000 claims abstract description 6
- 238000004364 calculation method Methods 0.000 claims description 8
- 238000012937 correction Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 abstract 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 16
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 241000886569 Cyprogenia stegaria Species 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Images
Classifications
-
- 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
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
-
- 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
- E21F1/006—Ventilation at the working face of galleries or tunnels
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The invention discloses a control method, a device and a processor of a coal mine local ventilation automatic monitoring system, which are used for receiving the gas content, the CO content and the CO of a coal mine working face tunneling head2Content (c); according to the gas content, the CO content and the CO2Calculating the first rotating speed of the local ventilator according to the content; receiving the current rotating speed, vibration information, flow wind speed and temperature information of the local ventilator, and determining a corrected rotating speed by combining the current rotating speed, vibration information, flow wind speed and temperature information; a second rotational speed of the ventilator is determined in combination with the first rotational speed and the corrected rotational speed. The invention can be used for controlling the gas content, the CO content and the CO content in the working surface2Content, current rotating speed, vibration information, flow, wind speed and temperature information of the local ventilator are integrated, the rotating speed of the fan with the highest energy saving and efficiency is calculated, the inlet wire switch and the power main feed switch of the fan are monitored, and the fan is powered off and stopped after power failure and wind stopping are performed unexpectedlyThe efficiency is very high when the power transmission and the wind sending are recovered.
Description
[ technical field ] A method for producing a semiconductor device
The invention belongs to the technical field of coal mine ventilation, and particularly relates to a control method, a device and a processor of an automatic monitoring system for local ventilation of a coal mine.
[ background of the invention ]
The local ventilation of the coal mine refers to the ventilation of a driving face, and when an underground roadway is mined, in order to supply fresh air, dilute and remove smoke, dust and harmful gas of the driving face and create a good working environment, local ventilation methods such as total wind-twist ventilation, diffusion ventilation, ejector and local fan ventilation and the like can be adopted.
The existing local fan ventilation method utilizes a local fan frequency conversion speed regulation technology, an underground gas sensor measurement technology, an electrical monitoring PLC technology and an upper machine configuration software monitoring technology, and realizes ground monitoring of the local fan by communicating a local fan monitoring PLC substation with a double-fan dual-power switch and then communicating with a ground industrial personal computer Ethernet.
However, in the prior art, the collection of each environmental information in the roadway is insufficient, the start and stop of the local ventilator are difficult to set according to actual conditions, the energy utilization rate is low, and the passing effect is poor.
[ summary of the invention ]
The invention aims to provide a control method, a control device and a control processor of an automatic monitoring system for local ventilation of a coal mine, and aims to solve the problem that energy is wasted due to inaccurate starting and stopping control of an existing local ventilation fan.
The invention adopts the following technical scheme: a control method of an automatic monitoring system for local ventilation of a coal mine comprises the following steps:
receiving the gas content, the CO content and the CO of the driving head of the coal mine working face2Content (c);
according to the gas content, the CO content and the CO2Calculating the first rotating speed of the local ventilator according to the content;
receiving the current rotating speed, vibration information, flow wind speed and temperature information of the local ventilator, and determining a corrected rotating speed by combining the current rotating speed, vibration information, flow wind speed and temperature information;
a second rotational speed of the ventilator is determined in combination with the first rotational speed and the corrected rotational speed.
Further, according to the gas content, CO content and CO2Before the calculation of the first rotating speed of the local ventilator, the method further comprises the following steps:
gas content, CO content and CO of the driving head of the coal mine working face2Comparing the content with the setting value, and determining the content of gas, CO and CO2And when the content is less than or equal to the setting value, locking the starting of the local ventilator.
Further, according to the gas content, CO content and CO2Before the calculation of the first rotating speed of the local ventilator, the method further comprises the following steps:
receiving the gas content in the working range of the local ventilator;
comparing the gas content in the working range of the local ventilator with the setting value;
and when the gas content in the working range of the local ventilator is less than or equal to the setting value, the local ventilator is locked to start.
The other technical scheme of the invention is as follows: a control device of a coal mine local ventilation automatic monitoring system comprises:
the first receiving module is used for receiving the gas content, the CO content and the CO of the tunneling head of the coal mine working face2Content (c);
a first calculation module for calculating CO content and gas content according to the gas content2Calculating the first rotating speed of the local ventilator according to the content;
the second receiving module is used for receiving the current rotating speed, the vibration information, the flow wind speed and the temperature information of the local ventilator and determining a correction rotating speed by combining the current rotating speed, the vibration information, the flow wind speed and the temperature information;
and a second determining module for determining a second rotation speed of the local ventilator by combining the first rotation speed and the correction rotation speed.
Further, the system also comprises a first comparison module for:
according to the gas content, the CO content and the CO2Before the content is calculated to the first rotating speed of the local ventilator,
gas content, CO content and CO of the driving head of the coal mine working face2Comparing the content with the setting value, and determining the content of gas, CO and CO2And when the content is less than or equal to the setting value, locking the starting of the local ventilator.
Further, the system comprises a second comparison module for:
according to the gas content, the CO content and the CO2Before the content is calculated to the first rotating speed of the local ventilator,
receiving the gas content in the working range of the local ventilator;
comparing the gas content in the working range of the local ventilator with the setting value;
and when the gas content in the working range of the local ventilator is less than or equal to the setting value, the local ventilator is locked to start.
The other technical scheme of the invention is as follows: the processor is used for running a program, wherein when the program runs, the control method of the automatic monitoring system for the local ventilation of the coal mine is executed.
The invention has the beneficial effects that: the invention can be used for controlling the gas content, the CO content and the CO content in the working surface2The system and the method have the advantages that the content is high, the current rotating speed, vibration information, flow speed and temperature information of the local ventilator are integrated, the rotating speed of the fan which is most energy-saving and efficient is calculated, the inlet wire switch and the power main feed switch of the fan are monitored, and the efficiency is very high when power supply and wind supply are recovered after power failure and wind stop accidentally.
[ description of the drawings ]
FIG. 1 is a flow chart of a method of an embodiment of the present invention;
fig. 2 is a schematic diagram of an automatic monitoring system for local ventilation of a coal mine according to another embodiment of the present invention.
[ detailed description ] embodiments
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The embodiment of the invention discloses a control method of an automatic monitoring system for local ventilation of a coal mine, which specifically comprises the following steps as shown in figure 1:
102, receiving the gas content, the CO content and the CO of the tunneling head of the coal mine working face2And (4) content.
In the embodiment, the gas content, the CO content and the CO content of the coal mine working face heading are2Comparing the content with the setting value, and determining the content of gas, CO and CO2The content is less than or equal toAnd during the setting value, locking the starting of the local ventilator to realize the energy saving of the system.
In the embodiment, the gas content in the working range of the local ventilator can be received; comparing the gas content in the working range of the local ventilator with the setting value; and when the gas content in the working range of the local ventilator is less than or equal to the setting value, locking the starting of the local ventilator.
104, according to the gas content, the CO content and the CO2And calculating the first rotating speed of the local ventilator according to the content.
And 106, receiving the current rotating speed, vibration information, flow wind speed and temperature information of the local ventilator, and determining a corrected rotating speed by combining the current rotating speed, vibration information, flow wind speed and temperature information.
And step 108, combining the first rotating speed and the corrected rotating speed to determine a second rotating speed of the local ventilator.
The method of the embodiment can be used for determining the gas content, the CO content and the CO in the working face2The system and the method have the advantages that the content is high, the current rotating speed, vibration information, flow speed and temperature information of the local ventilator are integrated, the rotating speed of the fan which is most energy-saving and efficient is calculated, the inlet wire switch and the power main feed switch of the fan are monitored, and the efficiency is very high when power supply and wind supply are recovered after power failure and wind stop accidentally. And in the calculation process of the second rotating speed, the PID is used for adjusting the air volume to realize energy conservation and emission reduction.
In addition, the method combines the function of locking and starting the fan by gas within 10 meters of the local ventilator and the function of locking and starting the fan by gas and carbon dioxide in a ventilation area exceeding the standard, an automatic system realizes the power supply of an uninterrupted power supply, and the safety and the timeliness of secondary air supply are improved.
In this embodiment, the control content may further include an incoming switch of the ground control local ventilator driver, an opening and closing switch and a remote reset of the power main feed switch of the working surface, and start, stop, switching, remote reset, and air volume adjustment of the control fan frequency converter.
The invention also discloses a coal mine local ventilation automatic monitoring system control device, which is applied to a coal mine local ventilation automatic monitoring system, the schematic diagram of the system is shown in figure 2, the system comprises an industrial personal computer, a ground switch, a nearby switch, a local fan point substation, a working face power feed switch, an incoming line 1 feed switch, a fan double-frequency converter, an incoming line 2 feed switch, an uninterruptible power supply and various signal sensors, the sensors comprise an air quantity sensor, a temperature sensor, a vibration sensor, a gas sensor, a carbon monoxide sensor, a carbon dioxide sensor, an air duct state sensor and the like, the system has large scale and is difficult to control, and therefore, the coal mine local ventilation automatic monitoring system control device is designed and comprises:
the first receiving module is used for receiving the gas content, the CO content and the CO of the tunneling head of the coal mine working face2Content (c); a first calculation module for calculating the gas content, CO content and CO2Calculating the first rotating speed of the local ventilator according to the content; the second receiving module is used for receiving the current rotating speed, vibration information, flow wind speed and temperature information of the local ventilator and determining a correction rotating speed by combining the current rotating speed, vibration information, flow wind speed and temperature information; and the second determining module is used for determining a second rotating speed of the local ventilator by combining the first rotating speed and the correction rotating speed.
In this embodiment, the apparatus further includes a first comparing module, configured to: according to the gas content, the CO content and the CO2Before the first rotating speed of the local ventilator is calculated according to the content, the gas content, the CO content and the CO content of the coal mine working face tunneling head are calculated2Comparing the content with the setting value, and determining the content of gas, CO and CO2And when the content is less than or equal to the setting value, locking the starting of the local ventilator.
This embodiment still includes: a second comparison module to: according to the gas content, the CO content and the CO2Receiving the gas content in the working range of the local ventilator before the first rotating speed of the local ventilator is calculated according to the content; comparing the gas content in the working range of the local ventilator with the setting value; when the gas content in the working range of the local ventilator is less than or equal to the setting valueThe activation of the local ventilator is blocked.
In this embodiment, an uninterruptible power supply may be further provided to ensure that the system can resume power supply and air supply to the fan and the working surface at the fastest speed.
In this embodiment, the local ventilator substation communicates with the local ventilator through the communication cable, so that all parameters (such as current-voltage ground resistance and the like) provided by the communication port of the fan driver can be obtained. And the flow, the wind speed, the vibration and the temperature of the local ventilator are obtained through various sensors. The vibration sensor is installed on a fan fixing base, the flow and air speed sensor is installed on an air duct, and the temperature sensor is installed on a fan shell and is input into the PLC substation through analog quantity for detection. Each sensor transmits data to a PLC module in the local fan substation through 4-20MA current signals, and the PLC module converts the data into data for displaying, storing, judging and alarming.
And a PLC in the local ventilator substation is in RS485 communication with an inlet switch of a local ventilator driver, a power main feed switch of a working face and a fan frequency converter, and acquires real-time parameters, a setting value, an operation state and fault contents of the local ventilator. And a PLC in the local ventilator substation is communicated with an incoming line switch of a local ventilator driver, a power main feed switch of a working face and a fan frequency converter in an RS485 manner, controls the opening and closing and remote resetting of the incoming line switch of the local ventilator driver and the power main feed switch of the working face, and controls the starting, stopping, switching, remote resetting and air volume adjusting of the fan frequency converter. Meanwhile, the remote setting function is achieved.
According to the scheme, the device of the embodiment can acquire the state of the frequency converter driving fan which is not acquired in the prior art, the monitoring content of the system is increased to include a fan inlet wire feed switch and a working face power feed switch, the locking relation of the carbon dioxide sensor, the methane sensor and the fan air supply is established, and the air quantity and the vibration data of the fan are monitored. According to the actual production process of the coal mine, a proper monitoring object is formulated, and the operation condition of the local ventilator is not designed from the perspective of energy conservation and emission reduction.
The embodiment of the invention also discloses a processor, which is used for running the program, wherein when the program runs, the control method of the automatic monitoring system for the local ventilation of the coal mine is executed.
Claims (7)
1. A control method of an automatic monitoring system for local ventilation of a coal mine is characterized by comprising the following steps:
receiving the gas content, the CO content and the CO of the driving head of the coal mine working face2Content (c);
according to the gas content, the CO content and the CO2Calculating the first rotating speed of the local ventilator according to the content;
receiving current rotating speed, vibration information, flow wind speed and temperature information of a local ventilator, and determining a corrected rotating speed by combining the current rotating speed, vibration information, flow wind speed and temperature information;
determining a second rotational speed of the ventilator in combination with the first rotational speed and a modified rotational speed.
2. The method of claim 1, wherein the method further comprises the step of controlling the automatic monitoring system according to the gas content, the CO content and the CO content2Before the calculation of the first rotating speed of the local ventilator, the method further comprises the following steps:
the gas content, the CO content and the CO of the driving head of the coal mine working face2Comparing the content with the setting value, and determining the content of gas, CO and CO2And when the content is less than or equal to the setting value, locking the starting of the local ventilator.
3. The method of claim 1, wherein the method further comprises the step of controlling the automatic monitoring system according to the gas content, the CO content and the CO content2Before the calculation of the first rotating speed of the local ventilator, the method further comprises the following steps:
receiving the gas content in the working range of the local ventilator;
comparing the gas content in the working range of the local ventilator with the setting value;
and when the gas content in the working range of the local ventilator is less than or equal to the setting value, locking the starting of the local ventilator.
4. The control device of the automatic monitoring system for the local ventilation of the coal mine according to claim 1, which comprises:
the first receiving module is used for receiving the gas content, the CO content and the CO of the tunneling head of the coal mine working face2Content (c);
a first calculation module for calculating the gas content, CO content and CO2Calculating the first rotating speed of the local ventilator according to the content;
the second receiving module is used for receiving the current rotating speed, vibration information, flow wind speed and temperature information of the local ventilator and determining a correction rotating speed by combining the current rotating speed, vibration information, flow wind speed and temperature information;
and the second determining module is used for determining a second rotating speed of the local ventilator by combining the first rotating speed and the correction rotating speed.
5. The coal mine local ventilation automatic monitoring system control device of claim 4, further comprising a first comparison module for:
according to the gas content, the CO content and the CO2Before the content is calculated to the first rotating speed of the local ventilator,
the gas content, the CO content and the CO of the driving head of the coal mine working face2Comparing the content with the setting value, and determining the content of gas, CO and CO2And when the content is less than or equal to the setting value, locking the starting of the local ventilator.
6. The coal mine local ventilation automatic monitoring system control device of claim 1, further comprising a second comparison module for:
according to the gas content, the CO content and the CO2Before the content is calculated to the first rotating speed of the local ventilator,
receiving the gas content in the working range of the local ventilator;
comparing the gas content in the working range of the local ventilator with the setting value;
and when the gas content in the working range of the local ventilator is less than or equal to the setting value, locking the starting of the local ventilator.
7. A processor, wherein the processor is configured to run a program, wherein the program when executed performs a method of controlling an automatic monitoring system for local ventilation of a coal mine according to any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910931428.0A CN110685948B (en) | 2019-09-29 | 2019-09-29 | Control method, device and processor of automatic monitoring system for local ventilation of coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910931428.0A CN110685948B (en) | 2019-09-29 | 2019-09-29 | Control method, device and processor of automatic monitoring system for local ventilation of coal mine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110685948A true CN110685948A (en) | 2020-01-14 |
| CN110685948B CN110685948B (en) | 2021-03-02 |
Family
ID=69110918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910931428.0A Active CN110685948B (en) | 2019-09-29 | 2019-09-29 | Control method, device and processor of automatic monitoring system for local ventilation of coal mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110685948B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113541318A (en) * | 2021-07-29 | 2021-10-22 | 西安重装韩城煤矿机械有限公司 | Remote monitoring device for underground power distribution point |
| CN113550773A (en) * | 2021-07-29 | 2021-10-26 | 西安科技大学 | Mining low-noise intelligent variable-frequency local ventilator system and control method thereof |
| CN113700516A (en) * | 2021-09-02 | 2021-11-26 | 西安重装韩城煤矿机械有限公司 | Remote switching device and method for coal mine variable-frequency local ventilator |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202064996U (en) * | 2011-05-23 | 2011-12-07 | 昆明理工大学 | Frequency conversion and speed regulation gas pumping and discharging device based on programmable logic controller (PLC) |
| CN103133381A (en) * | 2011-11-28 | 2013-06-05 | 河南理工大学 | Automatic frequency modulation control method of ventilator and device thereof |
| CN105041375A (en) * | 2015-05-20 | 2015-11-11 | 北京山潜天恒科技有限公司 | Mine local fan ventilation control system |
| WO2017064343A1 (en) * | 2015-10-14 | 2017-04-20 | Obras Subterraneas, S.A. | Means and method for controlling the working atmosphere in tunnels |
| CN106762761A (en) * | 2016-11-23 | 2017-05-31 | 宁波市镇海百硕机械科技有限公司 | Ventilation blower self-adapting intelligent control system |
| CN109404321A (en) * | 2018-11-22 | 2019-03-01 | 山西潞安安易电气有限公司 | Quo of local Fan for Mine three-level intelligence joint control system |
| CN110185647A (en) * | 2019-05-22 | 2019-08-30 | 无锡市双超风机有限公司 | A kind of intelligence control system of Mine Ventilator |
-
2019
- 2019-09-29 CN CN201910931428.0A patent/CN110685948B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202064996U (en) * | 2011-05-23 | 2011-12-07 | 昆明理工大学 | Frequency conversion and speed regulation gas pumping and discharging device based on programmable logic controller (PLC) |
| CN103133381A (en) * | 2011-11-28 | 2013-06-05 | 河南理工大学 | Automatic frequency modulation control method of ventilator and device thereof |
| CN105041375A (en) * | 2015-05-20 | 2015-11-11 | 北京山潜天恒科技有限公司 | Mine local fan ventilation control system |
| WO2017064343A1 (en) * | 2015-10-14 | 2017-04-20 | Obras Subterraneas, S.A. | Means and method for controlling the working atmosphere in tunnels |
| CN106762761A (en) * | 2016-11-23 | 2017-05-31 | 宁波市镇海百硕机械科技有限公司 | Ventilation blower self-adapting intelligent control system |
| CN109404321A (en) * | 2018-11-22 | 2019-03-01 | 山西潞安安易电气有限公司 | Quo of local Fan for Mine three-level intelligence joint control system |
| CN110185647A (en) * | 2019-05-22 | 2019-08-30 | 无锡市双超风机有限公司 | A kind of intelligence control system of Mine Ventilator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113541318A (en) * | 2021-07-29 | 2021-10-22 | 西安重装韩城煤矿机械有限公司 | Remote monitoring device for underground power distribution point |
| CN113550773A (en) * | 2021-07-29 | 2021-10-26 | 西安科技大学 | Mining low-noise intelligent variable-frequency local ventilator system and control method thereof |
| CN113700516A (en) * | 2021-09-02 | 2021-11-26 | 西安重装韩城煤矿机械有限公司 | Remote switching device and method for coal mine variable-frequency local ventilator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110685948B (en) | 2021-03-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110685948B (en) | Control method, device and processor of automatic monitoring system for local ventilation of coal mine | |
| CN110067764B (en) | Remote switching and intelligent regulation and control device for local ventilator of coal mine and control method | |
| CN109958474A (en) | Driving face in coal mine local ventilation intelligent control method and ventilated control system | |
| CN105041375B (en) | A kind of mine local fan ventilated control system | |
| CN102704981A (en) | Self-adaptive intelligent control system for ventilator | |
| CN114753878B (en) | Ventilation device for gas overrun detection of coal mine | |
| CN106292443B (en) | Environment measuring and fan linkage controller, devices and methods therefor in a kind of tunnel | |
| CN116774630A (en) | A ventilation control system for storing warehouse | |
| CN215486761U (en) | Coal mine ventilator frequency conversion speed regulation system device based on multi-sensor fusion | |
| CN202707544U (en) | Automatic speed regulating system based on mine partial ventilator of digital signal processor (DSP) | |
| CN114109465A (en) | Intelligent analysis decision-making method for mine ventilation system | |
| CN203756571U (en) | Intelligent frequency-conversion energy-saving control device of main fan on ground of coal mine | |
| CN205825449U (en) | Gas heater with intelligence air pressure system | |
| CN201868848U (en) | Power interruption controller with wireless communication function | |
| CN205135688U (en) | Low noise local ventilation device | |
| CN104035364B (en) | A kind of permanent magnet coupling speed regulator control device | |
| CN210573319U (en) | Intelligent coal mining machine electric control device based on DSP | |
| CN203847145U (en) | Automatic control device for underground mine ventilation | |
| CN201696079U (en) | High-efficiency energy-saving automatic mine gas emission system | |
| CN210503148U (en) | Energy-saving ship cabin ventilation control system | |
| CN111864806B (en) | Photovoltaic equipment control method, device and equipment and photovoltaic system | |
| CN204790490U (en) | Central heating desulfurization dust removal automatic control system | |
| CN113818916A (en) | Intelligent local ventilation system and ventilation control system for coal mine driving face | |
| CN219754843U (en) | Variable-frequency ventilation device | |
| CN203731624U (en) | Split air conditioner remote energy saving control management system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |