CN111577643A - Non-stop cutting method and device for ventilator - Google Patents
Non-stop cutting method and device for ventilator Download PDFInfo
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- CN111577643A CN111577643A CN202010465763.9A CN202010465763A CN111577643A CN 111577643 A CN111577643 A CN 111577643A CN 202010465763 A CN202010465763 A CN 202010465763A CN 111577643 A CN111577643 A CN 111577643A
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- fan
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- air door
- standby fan
- blade
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000005520 cutting process Methods 0.000 title claims abstract description 19
- 230000001050 lubricating effect Effects 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 12
- 230000003213 activating effect Effects 0.000 claims 2
- 239000003921 oil Substances 0.000 description 4
- 239000003245 coal Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Classifications
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- 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
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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
-
- 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
- F04D27/002—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying geometry within the pumps, e.g. by adjusting vanes
-
- 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
- F04D27/007—Conjoint control of two or more different functions
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- 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)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The invention discloses a method and a device for cutting a ventilator without stopping, wherein the method comprises the following steps: judging whether the in-use fan and the standby fan are in an online mode, if so, judging whether a precondition for starting the standby fan is met, if so, sending a cutter cutting signal to the standby fan through the upper computer, and electrifying the standby fan to run; after a preset time interval, the upper computer gives a stop signal to the fan in use, the fan in use receives the stop signal and judges whether the stop condition is met, if the stop signal is met, the angle of the fan blade in use is reduced, an air door of the fan in use is closed when the blade is reduced to the minimum angle, and meanwhile, an air door of the standby fan is opened when the standby fan receives the minimum angle of the blade of the fan in use; the invention has the advantages that: the rotating speed of the fan is fixed in the cutting process, the rotating speed of the fan does not need to be adjusted, and the cutting machine is easy to realize in mine application.
Description
Technical Field
The invention relates to the field of fan switching, in particular to a method and a device for cutting a fan without stopping.
Background
2 Haodun blades are installed in the existing coal mine ventilator room in the prior art as large ventilators with adjustable moving blades, and a dragging motor is a 4000kW and 10kV high-voltage asynchronous motor. Each ventilator is provided with 1 set of hydraulic station, a lubricating oil station, an upper electric air inlet door, a lower electric air inlet door, a movable blade actuator and the like, and the ventilators are used one by one and started directly under normal conditions. When the ventilator is originally cut, the angle is reduced, then the air door is closed, then the fan motor is stopped, and then the standby fan motor is started. This operation risks not being started after shutdown to backup the fan.
Chinese patent application publication No. CN 107620606a discloses a method for reversing a coal mine main ventilator without stopping wind based on a variable frequency speed regulation function, wherein in a normal reversing process, two ventilators are always kept running to ensure continuous supply of ventilation power; the air is divided in parallel, so that the air quantity is stable in the process of turning the machine, and the machine is turned without stopping the air. When the running fan has a fault, comprehensive judgment is given through the high-voltage frequency converter, the vibration sensor, the air quantity negative pressure sensor, the temperature sensor and the motor electrical parameter sensor, and the fault fan is pre-warned and provided with a fault mark in sequence according to the abnormal degree until the running fan is started to stop running in a fault mode. In the prior art, the mine fan is fixed in rotating speed and unadjustable in rotating speed due to various field conditions, the invention starts the standby fan firstly, starts the cutter after judging whether the standby fan reaches the specified rotating speed, and requires adjustable rotating speed of the fan, so that the fan is difficult to realize in a mine.
Disclosure of Invention
The invention aims to solve the technical problem that the method for cutting the ventilator without stopping the ventilator in the prior art is difficult to realize in mine application.
The invention solves the technical problems through the following technical means: a method of non-stop cutting a ventilator, the method comprising:
judging whether the in-use fan and the standby fan are in an online mode, if so, judging whether a precondition for starting the standby fan is met, if not, continuing to operate the in-use fan, stopping the generator tripping, and if so, sending a generator tripping signal to the standby fan through an upper computer, and electrifying the standby fan to operate;
after a preset time interval, the upper computer gives a stop signal to the fan in use, the fan in use receives the stop signal and judges whether the stop condition is met or not, if the stop signal is not met, the cutter is stopped, the fan in use is continuously operated, if the stop signal is met, the angle of the fan blade in use is reduced, the air door of the fan in use is closed when the blade is reduced to the minimum angle, and meanwhile, the air door of the fan in use is opened when the spare fan receives the minimum angle of the blade of the fan in use;
when the air door of the standby fan is opened to the position, the angle of the blade of the standby fan rises, the angle of the blade reaches the maximum angle, and the standby fan is started;
when the air door of the fan is closed in place, the fan is used for opening the brake by positive air, the lubricating station and the hydraulic station of the fan are stopped, and the fan is stopped.
When the machine is cut, the standby motor is operated firstly, then the blade angle of the fan in use is reduced, then the air door of the fan in use is closed simultaneously, the air door of the standby fan is opened, and then the blade angle of the standby fan is increased, so that the air supply continuity of the fan is ensured, the danger that the standby fan cannot be started after the fan in use is stopped is reduced, meanwhile, the standby motor is operated firstly, the blade angle of the fan in use is reduced, the blade angle of the standby fan is increased, the rotating speed of the fan is not required to be adjusted, and the machine is easy to realize in mine application.
Preferably, the method further comprises the step of judging whether the active fan and the standby fan are in an online mode, if not, continuing to operate the active fan, and not starting the standby fan.
Preferably, the precondition for starting the backup fan is as follows: the liquid levels of the hydraulic station of the standby fan and the lubricating station are normal, and the air door of the standby fan is automatic, the air door is remotely controlled, and the air door power supply and the brake power supply are all connected into a standby fan control loop.
Preferably, before the standby fan is powered on, the method further comprises: and starting a lubricating station and a hydraulic station of the standby fan, and controlling the standby fan to rotate forward and switch on by the upper computer when the liquid level is normal and the oil pressure is normal.
Preferably, the shutdown conditions are: the remote control of the air door of the in-use fan and the power supply of the air door are both connected to the control loop of the in-use fan, and no fault exists.
The invention also provides a non-stop cutting device for a ventilator, comprising:
the standby fan operation module is used for judging whether the in-use fan and the standby fan are in an online mode, if so, judging whether the precondition for starting the standby fan is met, if not, continuing the in-use fan to operate and stopping the generator cutter, and if so, sending a generator cutter signal to the standby fan through the upper computer, and electrifying the standby fan to operate;
the cutter module is used for giving a stop signal to the fan in use after a preset time interval, receiving the stop signal by the fan in use and judging whether the stop condition is met or not, if the stop signal is not met, stopping the cutter, continuing the operation of the fan in use, and if the stop signal is met, reducing the angle of the fan blade in use, closing an air door of the fan in use when the blade is reduced to the minimum angle, and simultaneously opening an air door of the standby fan when the standby fan receives the minimum angle of the blade of the fan in use;
the standby fan starting module is used for starting an air door of the standby fan to the position, raising the angle of a blade of the standby fan, enabling the angle of the blade to reach the maximum angle and finishing the starting of the standby fan;
the in-use fan stopping module is used for closing an air door of the in-use fan in place, opening a brake by positive air of the in-use fan, stopping running of a lubricating station and a hydraulic station of the in-use fan and stopping the in-use fan.
Preferably, the backup fan operation module is further configured to: and judging whether the in-use fan and the standby fan are in an online mode, if not, continuing to operate the in-use fan, and not starting the standby fan.
Preferably, the precondition for starting the backup fan is as follows: the liquid levels of the hydraulic station of the standby fan and the lubricating station are normal, and the air door of the standby fan is automatic, the air door is remotely controlled, and the air door power supply and the brake power supply are all connected into a standby fan control loop.
Preferably, before the operation of the backup fan, the method further comprises: and starting a lubricating station and a hydraulic station of the standby fan, and controlling the standby fan to rotate forward and switch on by the upper computer when the liquid level is normal and the oil pressure is normal.
Preferably, the shutdown conditions are: the remote control of the air door of the in-use fan and the power supply of the air door are both connected to the control loop of the in-use fan, and no fault exists.
The invention has the advantages that: when the machine is cut, the standby motor is operated firstly, then the blade angle of the fan in use is reduced, then the air door of the fan in use is closed simultaneously, the air door of the standby fan is opened, and then the blade angle of the standby fan is increased, so that the air supply continuity of the fan is ensured, the danger that the standby fan cannot be started after the fan in use is stopped is reduced, meanwhile, the standby motor is operated firstly, the blade angle of the fan in use is reduced, the blade angle of the standby fan is increased, the rotating speed of the fan is not required to be adjusted, and the machine is easy to realize in mine application.
Drawings
Fig. 1 is a flowchart of a method for cutting a ventilator without stopping the ventilator according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1, a method of cutting a ventilator without stopping the machine, the method comprising:
judging whether the in-use fan and the standby fan are in an online mode, if so, judging whether a preposed condition for starting the standby fan is met, if not, continuing to operate the in-use fan, stopping the cutter cutting, if so, sending a cutter cutting signal to the standby fan through the upper computer, starting a lubricating station and a hydraulic station of the standby fan, and if the liquid level is normal and the oil pressure is normal, controlling the standby fan to switch on in a forward rotation mode by the upper computer, and electrifying the standby fan to operate; and judging whether the in-use fan and the standby fan are in an online mode, if not, continuing to operate the in-use fan, and not starting the standby fan.
Wherein, the precondition for starting the standby fan is as follows: the liquid levels of the hydraulic station of the standby fan and the lubricating station are normal, and the air door of the standby fan is automatic, the air door is remotely controlled, and the air door power supply and the brake power supply are all connected into a standby fan control loop.
After a preset time interval, the upper computer gives a stop signal to the fan in use, the fan in use receives the stop signal and judges whether the stop condition is met or not, if the stop signal is not met, the cutter is stopped, the fan in use is continuously operated, if the stop signal is met, the angle of the fan blade in use is reduced, the air door of the fan in use is closed when the blade is reduced to the minimum angle, and meanwhile, the air door of the fan in use is opened when the spare fan receives the minimum angle of the blade of the fan in use;
wherein the shutdown conditions are: the remote control of the air door of the in-use fan and the power supply of the air door are both connected to the control loop of the in-use fan, and no fault exists.
When the air door of the standby fan is opened to the position, the angle of the blade of the standby fan rises, the angle of the blade reaches the maximum angle, and the standby fan is started;
when the air door of the fan is closed in place, the fan is used for opening the brake by positive air, the lubricating station and the hydraulic station of the fan are stopped, and the fan is stopped.
According to the technical scheme, the cutter device without stopping the ventilator provided by the invention has the advantages that the standby motor is firstly operated during cutting, then the blade angle of the fan used is reduced, the air door of the fan used is simultaneously closed, the air door of the standby fan is opened, the blade angle of the standby fan is increased, the air supply continuity of the fan is ensured, the danger that the standby fan cannot be started after the fan used is stopped is reduced, meanwhile, the standby motor is firstly operated, the blade angle of the fan used is reduced, the blade angle of the standby fan is increased, the rotating speed of the fan is fixed, the rotating speed of the fan does not need to be adjusted, and the cutter device is easy to realize in mine application.
Example 2
Corresponding to embodiment 1 of the present invention, embodiment 2 of the present invention also provides a non-stop cutting device for a ventilator, the device including:
the standby fan operation module is used for judging whether the in-use fan and the standby fan are in an online mode, if so, judging whether the precondition for starting the standby fan is met, if not, continuing the in-use fan to operate and stopping the generator cutter, and if so, sending a generator cutter signal to the standby fan through the upper computer, and electrifying the standby fan to operate;
the cutter module is used for giving a stop signal to the fan in use after a preset time interval, receiving the stop signal by the fan in use and judging whether the stop condition is met or not, if the stop signal is not met, stopping the cutter, continuing the operation of the fan in use, and if the stop signal is met, reducing the angle of the fan blade in use, closing an air door of the fan in use when the blade is reduced to the minimum angle, and simultaneously opening an air door of the standby fan when the standby fan receives the minimum angle of the blade of the fan in use;
the standby fan starting module is used for starting an air door of the standby fan to the position, raising the angle of a blade of the standby fan, enabling the angle of the blade to reach the maximum angle and finishing the starting of the standby fan;
the in-use fan stopping module is used for closing an air door of the in-use fan in place, opening a brake by positive air of the in-use fan, stopping running of a lubricating station and a hydraulic station of the in-use fan and stopping the in-use fan.
Specifically, the standby fan operation module is further configured to: and judging whether the in-use fan and the standby fan are in an online mode, if not, continuing to operate the in-use fan, and not starting the standby fan.
Specifically, the precondition for starting the standby fan is as follows: the liquid levels of the hydraulic station of the standby fan and the lubricating station are normal, and the air door of the standby fan is automatic, the air door is remotely controlled, and the air door power supply and the brake power supply are all connected into a standby fan control loop.
Specifically, the standby fan further comprises before operation: and starting a lubricating station and a hydraulic station of the standby fan, and controlling the standby fan to rotate forward and switch on by the upper computer when the liquid level is normal and the oil pressure is normal.
Specifically, the shutdown conditions are as follows: the remote control of the air door of the in-use fan and the power supply of the air door are both connected to the control loop of the in-use fan, and no fault exists.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method of cutting a ventilator without stopping, the method comprising:
judging whether the in-use fan and the standby fan are in an online mode, if so, judging whether a precondition for starting the standby fan is met, if not, continuing to operate the in-use fan, stopping the generator tripping, and if so, sending a generator tripping signal to the standby fan through an upper computer, and electrifying the standby fan to operate;
after a preset time interval, the upper computer gives a stop signal to the fan in use, the fan in use receives the stop signal and judges whether the stop condition is met or not, if the stop signal is not met, the cutter is stopped, the fan in use is continuously operated, if the stop signal is met, the angle of the fan blade in use is reduced, the air door of the fan in use is closed when the blade is reduced to the minimum angle, and meanwhile, the air door of the fan in use is opened when the spare fan receives the minimum angle of the blade of the fan in use;
when the air door of the standby fan is opened to the position, the angle of the blade of the standby fan rises, the angle of the blade reaches the maximum angle, and the standby fan is started;
when the air door of the fan is closed in place, the fan is used for opening the brake by positive air, the lubricating station and the hydraulic station of the fan are stopped, and the fan is stopped.
2. The method of claim 1, further comprising determining whether the active fan and the standby fan are in an on-line mode, and if not, continuing to operate the active fan without activating the standby fan.
3. A method of non-stop cutting of a ventilator in accordance with claim 1, wherein the precondition for starting the standby fan is: the liquid levels of the hydraulic station of the standby fan and the lubricating station are normal, and the air door of the standby fan is automatic, the air door is remotely controlled, and the air door power supply and the brake power supply are all connected into a standby fan control loop.
4. The method of claim 1, wherein the method of operating the standby fan without stopping the machine further comprises, before the standby fan is powered on: and starting a lubricating station and a hydraulic station of the standby fan, and controlling the standby fan to rotate forward and switch on by the upper computer when the liquid level is normal and the oil pressure is normal.
5. A method of non-stop cutting of a ventilator in accordance with claim 1, wherein the stop conditions are: the remote control of the air door of the in-use fan and the power supply of the air door are both connected to the control loop of the in-use fan, and no fault exists.
6. A ventilator non-stop cutter apparatus, the apparatus comprising:
the standby fan operation module is used for judging whether the in-use fan and the standby fan are in an online mode, if so, judging whether the precondition for starting the standby fan is met, if not, continuing the in-use fan to operate and stopping the generator cutter, and if so, sending a generator cutter signal to the standby fan through the upper computer, and electrifying the standby fan to operate;
the cutter module is used for giving a stop signal to the fan in use after a preset time interval, receiving the stop signal by the fan in use and judging whether the stop condition is met or not, if the stop signal is not met, stopping the cutter, continuing the operation of the fan in use, and if the stop signal is met, reducing the angle of the fan blade in use, closing an air door of the fan in use when the blade is reduced to the minimum angle, and simultaneously opening an air door of the standby fan when the standby fan receives the minimum angle of the blade of the fan in use;
the standby fan starting module is used for starting an air door of the standby fan to the position, raising the angle of a blade of the standby fan, enabling the angle of the blade to reach the maximum angle and finishing the starting of the standby fan;
the in-use fan stopping module is used for closing an air door of the in-use fan in place, opening a brake by positive air of the in-use fan, stopping running of a lubricating station and a hydraulic station of the in-use fan and stopping the in-use fan.
7. A ventilator non-stop cutter device according to claim 6, wherein said standby fan operating module is further configured to: and judging whether the in-use fan and the standby fan are in an online mode, if not, continuing to operate the in-use fan, and not starting the standby fan.
8. A ventilator non-stop cutter device according to claim 6, wherein the preconditions for activating the standby fan are: the liquid levels of the hydraulic station of the standby fan and the lubricating station are normal, and the air door of the standby fan is automatic, the air door is remotely controlled, and the air door power supply and the brake power supply are all connected into a standby fan control loop.
9. A ventilator non-stop cutter device according to claim 6, wherein said backup blower, prior to operation, further comprises: and starting a lubricating station and a hydraulic station of the standby fan, and controlling the standby fan to rotate forward and switch on by the upper computer when the liquid level is normal and the oil pressure is normal.
10. A ventilator non-stop cutter device according to claim 6, wherein said stop condition is: the remote control of the air door of the in-use fan and the power supply of the air door are both connected to the control loop of the in-use fan, and no fault exists.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010465763.9A CN111577643A (en) | 2020-05-28 | 2020-05-28 | Non-stop cutting method and device for ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010465763.9A CN111577643A (en) | 2020-05-28 | 2020-05-28 | Non-stop cutting method and device for ventilator |
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| Publication Number | Publication Date |
|---|---|
| CN111577643A true CN111577643A (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010465763.9A Pending CN111577643A (en) | 2020-05-28 | 2020-05-28 | Non-stop cutting method and device for ventilator |
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| Country | Link |
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| CN (1) | CN111577643A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177962A (en) * | 2020-09-30 | 2021-01-05 | 兖州煤业股份有限公司 | Safe operation method, system and equipment for mine main ventilator |
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| CN103883343A (en) * | 2014-03-24 | 2014-06-25 | 中国矿业大学 | Method for replacing coal mine main fan without blowing-down on basis of adjustable moving blades |
| CN105441609A (en) * | 2014-09-30 | 2016-03-30 | 上海梅山钢铁股份有限公司 | Method for controlling air volume of air blower |
| CN107620606A (en) * | 2017-11-08 | 2018-01-23 | 中国矿业大学 | A kind of coal mine main ventilator not blowing-out method of falling machine based on frequency control function |
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2020
- 2020-05-28 CN CN202010465763.9A patent/CN111577643A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883343A (en) * | 2014-03-24 | 2014-06-25 | 中国矿业大学 | Method for replacing coal mine main fan without blowing-down on basis of adjustable moving blades |
| CN105441609A (en) * | 2014-09-30 | 2016-03-30 | 上海梅山钢铁股份有限公司 | Method for controlling air volume of air blower |
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| 安留记等: ""ANN型液压动叶在线可调轴流式风机在煤矿的应用"", 《中州煤炭》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177962A (en) * | 2020-09-30 | 2021-01-05 | 兖州煤业股份有限公司 | Safe operation method, system and equipment for mine main ventilator |
| CN112177962B (en) * | 2020-09-30 | 2022-07-15 | 兖矿能源集团股份有限公司 | Safe operation method, system and equipment for mine main ventilator |
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Application publication date: 20200825 |
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