CN203362569U - Air reversing control system of hot blast stove used for coal mine - Google Patents
Air reversing control system of hot blast stove used for coal mine Download PDFInfo
- Publication number
- CN203362569U CN203362569U CN 201320381692 CN201320381692U CN203362569U CN 203362569 U CN203362569 U CN 203362569U CN 201320381692 CN201320381692 CN 201320381692 CN 201320381692 U CN201320381692 U CN 201320381692U CN 203362569 U CN203362569 U CN 203362569U
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- CN
- China
- Prior art keywords
- coal mine
- control system
- hot blast
- blast stove
- stove used
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses an air reversing control system of a hot blast stove used for a coal mine. The air reversing control system of the hot blast stove used for the coal mine comprises a main ventilator frequency converter, a control cabinet, a main ventilator, a gate electromagnetic switch and an explosion door electromagnetic switch, wherein the main ventilator frequency converter is connected with the control cabinet and the main ventilator, and the control cabinet is connected with the gate electromagnetic switch and the explosion door electromagnetic switch. The air reversing control system of the hot blast stove used for the coal mine has the advantages of being reasonable in structural design, safer and more reliable. According to the air reversing control system of the hot blast stove used for the coal mine, a methane sensor in an original fire safety protective device control system is eliminated, a coal mine ventilation control system is arranged directly in an embedded mode, corresponding nodes in the main ventilator frequency converter are connected with the control cabinet, so that when an fire accident happens in an air inlet shaft of the coal mine, relevant instructions can be executed instantly, safely and efficiently. The air reversing control system of the hot blast stove used for the coal mine is suitable for being installed in various underground coal mine hot air supplying systems for use.
Description
Technical field
The utility model relates to colliery hot blast conveying equipment, refers more particularly to mine hot blast heater inverted ventilation control system.
Background technique
At present, the northern area of China colliery all adopts hot blast stove to carry out heat supply to the delivered downhole hot blast in the winter time.Hot blast stove is by air-supply pipeline and colliery roadway UNICOM.When colliery downcast breaking out of fire accident, main fan frequency variator (also claiming main fan frequency variator) output order, main fan is realized counterrotating (also claiming inverted ventilation), to prevent the fire air-flow, enters bank, avoids causing exploiting field gas explosion or dust explosion.But, when the main fan counterrotating, due to air-supply pipeline and colliery roadway UNICOM, the fire air-flow will enter hot blast stove by the air-supply pipeline, may cause thus the hot blast stove blast.In order to prevent that above-mentioned accident from occurring, hot blast stove has all been installed the Smoke proofing and fire proofing door.And the Smoke proofing and fire proofing door is mostly to adopt methane transducer to be detected inflammable gas in air, when main fan counterrotating and Methane in Air concentration over-standard, realize automatically closing of fire-proof smoke-proof door.In use, there is following defect in methane transducer: the one, every 7 days needs effects once, otherwise there will be zero drift to produce, botch routines, and complex operation; The 2nd, to power supply stability requirement higher (intrinsic safety type power supply), bad adaptability; The 3rd, signal passes through remote transmission and easily decays, and causes sometimes the fire-proof smoke-proof door to close attonity; The 4th, due to the effect of inertia of main fan rotation, from receiving the counterrotating instruction, to the counterrotating rated speed, consuming timely be not less than 4 minutes, due to fire air-flow high-speed motion, and each anti-control mechanism delay voltage causes the fire air-flow to enter hot blast stove and set off an explosion.
Summary of the invention
Goal of the invention of the present utility model, be to provide a kind of and can effectively overcome above-mentioned deficiency, cancel methane transducer, corresponding node in the coal mine main ventilator frequency variator is connected with control cabinet, when colliery downcast breaking out of fire accident, can immediately complete safely and effectively the mine hot blast heater inverted ventilation control system of dependent instruction.
The technical solution of the utility model is such, and it comprises main fan frequency variator, control cabinet, main fan, flashboard magnetic switch and explosion proof door magnetic switch; Described main fan frequency variator is connected with described control cabinet, main fan respectively; Described control cabinet is connected with described flashboard magnetic switch, explosion proof door magnetic switch respectively.
Characteristics of the present utility model are reasonable in design, safer reliable.Cancel the methane transducer in former fire safety protective gear control system; directly embed the coalmine ventilation control system; corresponding node in the main fan frequency variator is connected with control cabinet, when colliery downcast breaking out of fire accident, can immediately completes safely and effectively dependent instruction.Under applicable all kinds of coal mine, the hot wind supply system installs and uses.
The accompanying drawing explanation
The principle assumption diagram that Fig. 1 is mine hot blast heater inverted ventilation control system;
Wherein: 1 main fan frequency variator, 2 control cabinets, 3 main fans, 4 flashboard magnetic switch, 5 explosion proof door magnetic switch.
Embodiment
Mine hot blast heater inverted ventilation control system comprises main fan frequency variator 1, control cabinet 2, main fan 3, flashboard magnetic switch 4 and explosion proof door magnetic switch 5; Described main fan frequency variator 1 is connected with described control cabinet 2, main fan 3 respectively; Described control cabinet 2 is connected with described flashboard magnetic switch 4, explosion proof door magnetic switch 5 respectively.
When colliery downcast breaking out of fire accident, 1 action of main fan frequency variator, output two paths of signals: road direction main fan 3 output counterrotating signals, another road direction control cabinet 2 output action signals.Control cabinet 2 actions, flashboard magnetic switch 4 powers on, and the Smoke proofing and fire proofing door flashboard on the hot blast conveying pipe road cuts out, the path of blocking-up hot blast stove and colliery roadway, and then prevent that the fire air-flow from entering hot blast stove; Explosion proof door magnetic switch 5 powers on simultaneously, and the explosion proof door on the hot blast conveying pipe road is opened, and the fire air-flow enters atmosphere by explosion proof door.And then reach and prevent the blast purpose of accident of hot blast stove.
Claims (1)
1. mine hot blast heater inverted ventilation control system, it comprises main fan frequency variator (1), control cabinet (2), main fan (3), flashboard magnetic switch (4) and explosion proof door magnetic switch (5); It is characterized in that, described main fan frequency variator (1) is connected with described control cabinet (2), main fan (3) respectively; Described control cabinet (2) is connected with described flashboard magnetic switch (4), explosion proof door magnetic switch (5) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320381692 CN203362569U (en) | 2013-07-01 | 2013-07-01 | Air reversing control system of hot blast stove used for coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320381692 CN203362569U (en) | 2013-07-01 | 2013-07-01 | Air reversing control system of hot blast stove used for coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203362569U true CN203362569U (en) | 2013-12-25 |
Family
ID=49810343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320381692 Expired - Fee Related CN203362569U (en) | 2013-07-01 | 2013-07-01 | Air reversing control system of hot blast stove used for coal mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203362569U (en) |
-
2013
- 2013-07-01 CN CN 201320381692 patent/CN203362569U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20140701 |
|
| EXPY | Termination of patent right or utility model |