CN116877759A - Rapid start-stop auxiliary device and method under power-off condition of blast furnace air supply valve - Google Patents
Rapid start-stop auxiliary device and method under power-off condition of blast furnace air supply valve Download PDFInfo
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- CN116877759A CN116877759A CN202310939930.2A CN202310939930A CN116877759A CN 116877759 A CN116877759 A CN 116877759A CN 202310939930 A CN202310939930 A CN 202310939930A CN 116877759 A CN116877759 A CN 116877759A
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000000446 fuel Substances 0.000 claims abstract description 21
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 238000004880 explosion Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 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
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Abstract
The invention belongs to the technical field of blast furnace maintenance, and particularly relates to a quick start-stop auxiliary device and a quick start-stop auxiliary method for a blast furnace air supply valve under the condition of power failure, which are characterized by comprising a fuel engine, a speed reducer, a chain transmission pair and a manual clutch, wherein the fuel engine is arranged on a machine seat near the blast furnace air supply valve, the fuel engine is connected with the speed reducer, an output shaft of the speed reducer is connected with the manual clutch arranged at the end part of a valve shaft of the blast furnace air supply valve through the chain transmission pair, and a driven side of the manual clutch is connected with the valve shaft; the valve shaft is provided with a manual operation wheel. Compared with the prior art, the invention has the beneficial effects that: 1) The device can realize the rapid start-stop operation under the condition of power failure of the blast furnace air supply valve, and has low labor intensity. 2) In the process of stopping the air and closing the air supply valve, only one post worker is required to start the device to drive the air supply valve to operate, so that the air supply valve can be quickly closed within 3 minutes, the connection between the air supply system and the blast furnace is cut off, and the explosion risk of the air supply system is greatly reduced.
Description
Technical Field
The invention belongs to the technical field of blast furnace maintenance, and particularly relates to a rapid start-stop auxiliary device and method under the condition of power failure of a blast furnace air supply valve.
Background
The blast furnace maintenance regulations prescribe: when all the systems of the blast furnace are powered off to stop wind, water, steam and the like, the wind stopping operation should be immediately carried out according to a wind stopping program, and the valves should be manually opened and closed, especially the air supply valve should be immediately closed, the connection between the blast furnace system and the air supply system is rapidly cut off, and the high-temperature gas is prevented from flowing backwards to the air supply system to cause explosion. However, in the actual wind stopping operation, after the traditional air supply valve is powered off, the control wheel can only be manually rotated, which generally takes more than 30 minutes, and consumes a great deal of manpower, so that the explosion risk of the air supply system is greatly improved.
Since the occurrence rate of this problem is not high, no relevant report of the solution has been found yet.
Disclosure of Invention
The invention aims to provide a rapid start-stop auxiliary device and a rapid start-stop auxiliary method for a blast furnace air supply valve under the outage condition, which overcome the defects of the prior art, adopt a diesel engine as the driving force for power off, realize rapid start-stop operation under the outage condition of the blast furnace air supply valve, and greatly reduce the explosion risk of an air supply system.
In order to achieve the above purpose, the present invention is realized by the following technical scheme:
one of the technical proposal is as follows: the quick start-stop auxiliary device is characterized by comprising a fuel engine, a speed reducer, a chain transmission pair and a manual clutch, wherein the fuel engine is arranged on a machine seat near the blast furnace air supply valve; the valve shaft is provided with a manual operation wheel.
The fuel engine is a gasoline engine or a diesel engine.
The manual clutch is in the form of a roller type one-way clutch AA50.
The driving side of the manual clutch is connected with the base through a bearing seat.
The valve shaft is provided with an opening pointer, and the opening pointer is connected with the valve shaft through a clamp.
The second technical scheme is as follows: the quick start-stop auxiliary method for the blast furnace air supply valve under the power-off condition is characterized by comprising the following specific steps of: 1) When the blast furnace air supply valve works normally, the valve is in a normally open state, and the fuel engine does not work;
2) When each system of the blast furnace has power failure, an operator arrives at the blast furnace air supply valve to start the fuel engine;
3) The manual clutch is in a gear-shifting state, and the valve shaft rotates under the driving of the fuel engine until the opening pointer shows that the blast furnace air supply valve is closed;
4) And (5) the manual clutch is shifted off, and the fuel engine is closed.
When the systems of the blast furnace are powered again, the manual operation wheel is operated to enable the valve plate of the blast furnace air supply valve to rotate to the opening position.
Compared with the prior art, the invention has the beneficial effects that:
1) The device has the advantages of simple process, convenient installation, safety, reliability and easy operation, and can realize the rapid start-stop operation under the condition of power failure of the blast furnace air supply valve, thereby having low labor intensity. 2) In the process of stopping the air and closing the air supply valve, only one post worker is required to start the device to drive the air supply valve to operate, so that the air supply valve can be quickly closed within 3 minutes, the connection between the air supply system and the blast furnace is cut off, and the explosion risk of the air supply system is greatly reduced.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention.
In the figure, a 1-diesel engine; a 2-speed reducer; 3-chain transmission pairs; 4-manual clutch; 5-a stand; 6-a blast furnace air supply valve; 7-a valve shaft; 8-a manual operation wheel; 9-bearing seats; 10-a base; 11-opening degree pointer; 12-clamping hoop; 13-a coupling; 14-blast pipe.
Detailed Description
The technical solutions of the present invention will be clearly and fully described below with reference to specific embodiments, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will briefly explain the embodiments that are needed in the embodiments or the prior art descriptions, and it is obvious that the embodiments in the following description are some embodiments of the present invention and that other embodiments may be obtained according to these embodiments without inventive effort for a person skilled in the art.
The components of the embodiments of the present invention generally described and illustrated in the specific embodiments herein can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as provided in the specific embodiments, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
Referring to fig. 1, a schematic structural diagram of an embodiment of a rapid start-stop auxiliary device under the condition of power failure of a blast furnace blast valve of the invention is provided, which comprises a diesel engine 1, a speed reducer 2, a chain transmission pair 3 and a manual clutch 4, wherein the diesel engine 1 is arranged on a machine seat 5 near the blast furnace blast valve 6 on a blast pipe 14, the diesel engine 1 is connected with the speed reducer 2, an output shaft of the speed reducer 2 is connected with the manual clutch 4 arranged at the end part of a valve shaft 7 of the blast furnace blast valve 6 through the chain transmission pair 3, and a driven side of the manual clutch 4 is connected with the valve shaft 7 through a coupling 13; the valve shaft 7 is provided with a manual operation wheel 8. The diesel engine is used as an emergency power source when the blast furnace fails.
The manual clutch 4 has the specification of a roller type one-way clutch AA50, and has the advantages of convenient operation and high response speed.
The driving side of the manual clutch 4 is connected with a base 10 through a bearing seat 9, and the base 10 and the bearing seat 9 can meet the requirement of supporting the manual clutch 4 to provide supporting force, prevent torque transmission deviation and damage a blast furnace blast valve.
The valve shaft 7 is provided with an opening pointer 11, the opening pointer 11 is connected with the valve shaft 7 through a clamp 12, and the opening pointer enables the opening and closing states of the valve to be clear at a glance, so that the valve is prevented from being damaged.
The invention discloses a rapid start-stop auxiliary method under the condition of power failure of a blast furnace air supply valve, which specifically comprises the following steps:
1) When the blast furnace air supply valve 6 works normally, the valve is in a normally open state, and the fuel engine 1 does not work;
2) When each system of the blast furnace has power failure, an operator arrives at the blast furnace air supply valve 6 to start the fuel engine 1;
3) The manual clutch 4 is in a gear state by the operation of a post worker, and the valve shaft 7 rotates under the drive of the fuel engine 1 until the opening pointer shows that the blast furnace blast valve 6 is closed, and the operation is stopped;
4) The manual clutch 4 is disengaged and the fuel engine 1 is turned off.
When the blast furnace fault occurs, the invention can rapidly close the blast furnace air supply valve within 3min by only one person to start the diesel engine, cut off the connection between the blast furnace system and the air supply system, reset the manual clutch gear plate after the blast furnace air supply valve is closed, adjust the manual clutch gear plate to the manual control wheel position, remarkably reduce the labor intensity and meet the requirement of the blast furnace fault response speed.
When the power of each system of the blast furnace is supplied again, the post staff operates the manual operation wheel 8 to enable the valve plate of the blast furnace air supply valve 6 to rotate to the opening position, and the blast furnace runs normally.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The quick start-stop auxiliary device is characterized by comprising a fuel engine, a speed reducer, a chain transmission pair and a manual clutch, wherein the fuel engine is arranged on a machine seat near the blast furnace air supply valve; the valve shaft is provided with a manual operation wheel.
2. The rapid start-stop auxiliary device according to claim 1, wherein the fuel engine is a gasoline engine or a diesel engine.
3. The rapid start-stop auxiliary device according to claim 1, wherein the manual clutch is a roller type one-way clutch AA50.
4. The rapid start-stop auxiliary device under the power-off condition of a blast furnace blast valve according to claim 1, wherein the driving side of the manual clutch is connected with a base through a bearing seat.
5. The rapid start-stop auxiliary device under the power-off condition of the blast furnace air supply valve according to claim 1, wherein the valve shaft is provided with an opening pointer, and the opening pointer is connected with the valve shaft through a clamp.
6. The quick start-stop auxiliary method for the blast furnace air supply valve under the power-off condition is characterized by comprising the following specific steps of: 1) When the blast furnace air supply valve works normally, the valve is in a normally open state, and the fuel engine does not work;
2) When each system of the blast furnace has power failure, an operator arrives at the blast furnace air supply valve to start the fuel engine;
3) The manual clutch is in a gear-shifting state, and the valve shaft rotates under the driving of the fuel engine until the opening pointer shows that the blast furnace air supply valve is closed;
4) And (5) the manual clutch is shifted off, and the fuel engine is closed.
7. The method of claim 6, wherein the manual wheel is operated to turn the valve plate of the blast furnace blast valve to the open position after the systems of the blast furnace are powered back up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310939930.2A CN116877759A (en) | 2023-07-28 | 2023-07-28 | Rapid start-stop auxiliary device and method under power-off condition of blast furnace air supply valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310939930.2A CN116877759A (en) | 2023-07-28 | 2023-07-28 | Rapid start-stop auxiliary device and method under power-off condition of blast furnace air supply valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116877759A true CN116877759A (en) | 2023-10-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310939930.2A Pending CN116877759A (en) | 2023-07-28 | 2023-07-28 | Rapid start-stop auxiliary device and method under power-off condition of blast furnace air supply valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116877759A (en) |
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2023
- 2023-07-28 CN CN202310939930.2A patent/CN116877759A/en active Pending
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