CN218894990U - High-temperature-resistant high-dust-resistant smoke gate valve for coal-fired boiler - Google Patents
High-temperature-resistant high-dust-resistant smoke gate valve for coal-fired boiler Download PDFInfo
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- CN218894990U CN218894990U CN202320157237.5U CN202320157237U CN218894990U CN 218894990 U CN218894990 U CN 218894990U CN 202320157237 U CN202320157237 U CN 202320157237U CN 218894990 U CN218894990 U CN 218894990U
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Abstract
The utility model discloses a high-temperature-resistant high-dust-resistant flue gate valve for a coal-fired boiler, belonging to the technical field of valves; comprises a power device, a connecting device, an outer frame, a valve plate, a sealing ring, an automatic propping device and a guiding device; the power device is connected with the connecting device, the power device is fixed on the outer frame, the sealing ring is connected with the outer frame, the automatic jacking device is connected with the outer frame, and the guiding device is connected with the outer frame. The high-temperature and high-dust-resistant smoke gate valve for the coal-fired boiler has the advantages of simple structure, small manufacturing and construction difficulty, easiness in realization, low cost and high economic benefit, and the valve plays a role in sealing and isolating under the conditions of high temperature resistance, dust resistance and corrosion resistance.
Description
Technical Field
The utility model relates to a high-temperature-resistant high-dust-resistant flue gate valve for a coal-fired boiler, and belongs to the technical field of valves.
Background
The flue of the coal-fired boiler outlet is sulfur-containing high-temperature flue gas, the normal flue gas temperature is up to 400 ℃, and the flue gas has certain acid corrosion. The common valve cannot be normally used for a long time in the environment, the common baffle door can deform due to temperature difference under the environment condition and is affected by corrosion of sulfur and the like, the valve can be damaged and fails, and the common baffle door cannot be normally opened and closed and can not be kept sealed. When the system is stopped and the valve is closed for maintenance, accidents such as worker poisoning and the like can occur due to valve failure and smoke leakage, and serious losses are caused to personal lives, properties, enterprises and society.
At present, most baffle doors in the market are used in a low-temperature flue gas environment with flue gas temperature below 200 ℃, the flue gas is subjected to one-stage or multi-stage heat exchange at the moment, the thermal deformation of a steel plate is small in the low-temperature environment, the structural stability of the valve is not affected basically, however, when the flue gas temperature is increased to about 450 ℃, the deformation of the steel plate can reach tens of millimeters according to the size of a flue, and the common carbon steel material cannot resist the high temperature, so that the phenomena of deformation, cracking and the like can occur; the flue gas at this time also contains a large amount of dust, and the dust is in use constantly to accumulate, can block up positions such as guide rail and seal groove, causes the valve to close inadequately, forms to leak out of order, in order to prevent this kind of condition to take place, must improve flue gas baffle valve, makes the valve can play sealed effect of cutting off under high temperature resistant, dustproof, corrosion-resistant circumstances.
The utility model patent with the publication number of CN2720208Y and the name of high-temperature flue gate valve discloses a high-temperature flue gate valve, which consists of a valve body, a valve plate, an electric lifting device and a valve plate door frame, wherein the valve body is connected with a flue, the valve plate is inserted into the valve body, the valve plate door frame is positioned on the valve body, and the electric lifting device is arranged on the valve plate door frame and is connected with the valve plate through a steel wire rope. However, it has the disadvantage that: when the valve body falls and cuts off, the valve body falls by dead weight, if the smoke dust content is high, residual dust and the like exist in the guide rails at the bottom and the two sides of the flue, the valve plate completely depends on the dead weight, cannot completely reach the designated position, cannot form complete sealing, and further causes smoke leakage.
Therefore, the high-temperature and high-dust-resistant smoke gate valve for the coal-fired boiler is simple in structure, low in manufacturing and construction difficulty and easy to realize, and the valve can play a role in sealing and isolating under the conditions of high temperature resistance, dust prevention and corrosion resistance, is low in cost and high in economic benefit, so that the high-temperature and high-dust-resistant smoke gate valve is a technical problem to be solved in the technical field.
Disclosure of Invention
The utility model aims to provide the high-temperature-resistant high-dust smoke gate valve for the coal-fired boiler, which has the advantages of simple structure, small manufacturing and construction difficulties, easy realization, low cost and high economic benefit, and can play a role in sealing and isolating under the conditions of high temperature resistance, dust resistance and corrosion resistance.
In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:
a high temperature resistant high dust flue gate valve for coal fired boiler, its characterized in that: comprises a power device, a connecting device, an outer frame, a valve plate, a sealing ring, an automatic propping device and a guiding device; the power device is connected with the connecting device, the power device is fixed on the outer frame, the sealing ring is connected with the outer frame, the automatic jacking device is connected with the outer frame, and the guiding device is connected with the outer frame.
Preferably, the power device is a motor, the connecting device is a connecting rod, the motor is connected with the connecting rod, and the connecting rod is connected with the valve plate.
Preferably, the power device is a hydraulic station, the connecting device is an oil cylinder, the oil cylinder is connected with the hydraulic station, the oil cylinder is fixed on the outer frame, and the oil cylinder is connected with the valve plate.
Preferably, the outer frame is a completely sealed device.
Preferably, the bottom of the outer frame is provided with an ash deposition and discharge device.
Preferably, the automatic jacking device can automatically compress the valve plate to be tightly connected with the sealing ring in the process that the valve plate falls into the flue.
Preferably, the valve plate is made of 316L stainless steel, the external structure of the valve plate is rectangular or square at the upper part, and the bottom of the valve plate is semicircular.
Preferably, the automatic jacking device is made of 316L stainless steel.
The beneficial effects are that:
the high-temperature and high-dust-resistant smoke gate valve for the coal-fired boiler has the advantages of simple structure, low manufacturing and construction difficulty, easiness in realization, capability of playing a role in sealing and isolating under the conditions of high temperature resistance, dust prevention and corrosion resistance, low cost and high economic benefit.
The high-temperature and high-dust-resistance flue gate valve for the coal-fired boiler achieves the aim of sealing and isolating high-temperature, high-dust-content and corrosive flue gas from the boiler.
The utility model is further illustrated by the drawings and the detailed description which follow, but are not meant to limit the scope of the utility model.
Drawings
FIG. 1 is a schematic view showing a left side sectional structure of a high temperature and high dust resistant flue gate valve for a coal-fired boiler according to example 1 of the present utility model.
Fig. 2 is a schematic front sectional view of a high temperature and high dust resistant flue gate valve for a coal-fired boiler according to embodiment 1 of the present utility model.
FIG. 3 is a schematic left side sectional view of a high temperature and high dust smoke barrier gate valve for a coal-fired boiler according to example 2 of the present utility model.
FIG. 4 is a schematic front sectional view showing a high temperature and high dust smoke barrier gate valve for a coal-fired boiler according to example 2 of the present utility model.
The main reference numerals illustrate:
1. motor 1-1 hydraulic station
2. Connecting rod 2-1 oil cylinder
3 outer frame 4 valve plate
Automatic jacking device for 5 sealing ring 6
7 guiding device
Detailed Description
In the embodiments of the present utility model, all parts used are conventional parts commercially available in the art, and the connection between the parts is conventional.
Example 1
FIG. 1 is a schematic view showing a left side sectional structure of a high temperature and high dust resistant flue gate valve for a coal-fired boiler; FIG. 2 is a schematic diagram showing a front sectional structure of a high temperature and high dust resistant flue gate valve for a coal-fired boiler according to the present utility model; wherein, 1 is a motor, 2 is a connecting rod, 3 is an outer frame, 4 is a valve plate, 5 is a sealing ring, 6 is an automatic jacking device, and 7 is a guiding device; the utility model relates to a high-temperature and high-dust-resistant smoke gate valve for a coal-fired boiler, which comprises a motor 1, a connecting rod 2, an outer frame 3, a valve plate 4, a sealing ring 5, an automatic jacking device 6 and a guiding device 7; the motor 1 is connected with the connecting rod 2, the motor 1 is fixed on the outer frame 3, the connecting rod 2 is connected with the valve plate 4, the sealing ring 5 is connected with the outer frame 3, the automatic jacking device 6 is connected with the outer frame 3, the guiding device 7 is connected with the outer frame 3, and the outer frame is a completely sealed device; the motor 1 is fixed on the outer frame 3, so that the number and the length of intermediate connecting pieces can be reduced to the greatest extent; the sealing ring 5 is connected with the outer frame 3, can be always fixed at the periphery of the flue opening of the outer frame, and ensures the sealing and cutting-off of the flue after the valve plate falls down; the automatic jacking device 6 is connected with the outer frame 3 and is always fixed on the outer frame and corresponds to the valve position, when the valve plate 4 falls into the flue, the automatic jacking device 6 contacts with the valve plate 4 and gradually jacks the valve plate 4, so that the valve plate 4 is in close contact with the sealing ring 5; the outer frame 3 is a completely sealed box body, so that the smoke is prevented from leaking into the air; the bottom of the outer frame 3 is provided with an ash deposition and ash discharge device, so that the ash deposition at the lower part of the valve plate 4 can be timely discharged out of the flue, and the blockage is prevented.
The high-temperature and high-dust-resistant smoke gate valve for the coal-fired boiler disclosed by the utility model is operated as follows: the motor 1 starts, promotes connecting rod 2 action, and connecting rod 2 drives valve plate 4 action, valve plate 4 and sealing ring 5 contact, closes the flue and seals, and automatic tight device 6 contacts and guarantees valve plate 4 and sealing ring 5 contact closely, has guaranteed that the valve can cut off the flue and keep sealed, has sufficient space between valve plate 4 and the outer frame 3, can hold valve plate 4 because of the expansion amount that the high temperature produced, sealing ring 5 guarantees on valve plate 4 all the time, can not lead to sealing ring 5 to move to the outside of valve plate 4 because of valve plate 4 deformation, causes leakage failure.
Example 2
FIG. 3 is a schematic view showing a left side sectional structure of a high temperature and high dust resistant flue gate valve for a coal-fired boiler according to the present utility model; FIG. 4 is a schematic diagram showing a front sectional structure of a high temperature and high dust resistant flue gate valve for a coal-fired boiler according to the present utility model; wherein 1-1 is a hydraulic station, 2-1 is an oil cylinder, 3 is an outer frame, 4 is a valve plate, 5 is a sealing ring, 6 is an automatic jacking device, and 7 is a guiding device; the utility model relates to a high-temperature and high-dust-resistant smoke gate valve for a coal-fired boiler, which comprises a hydraulic station 1-1, an oil cylinder 2-1, an outer frame 3, a valve plate 4, a sealing ring 5, an automatic jacking device 6 and a guiding device 7; the hydraulic station 1-1 is connected with the oil cylinder 2-1, the outer cylinder of the oil cylinder 2-1 is fixed on the outer frame 3, the telescopic rod of the oil cylinder 2-1 is connected with the valve plate 4, the sealing ring 5 is connected with the outer frame 3, the automatic jacking device 6 is connected with the outer frame 3, the guiding device 7 is connected with the outer frame 3, and the outer frame is a completely sealed device; the sealing ring 5 is connected with the outer frame 3, can be always fixed at the periphery of the flue opening of the outer frame, and ensures the sealing and cutting-off of the flue after the valve plate falls down; the automatic jacking device 6 is connected with the outer frame 3 and is always fixed on the outer frame and corresponds to the valve position, when the valve plate 4 falls into the flue, the automatic jacking device 6 contacts with the valve plate 4 and gradually jacks the valve plate 4, so that the valve plate 4 is in close contact with the sealing ring 5; the outer frame 3 is a completely sealed box body, so that the smoke is prevented from leaking into the air; the bottom of the outer frame 3 is provided with an ash deposition and ash discharge device, so that the ash deposition at the lower part of the valve plate 4 can be timely discharged out of the flue, and the blockage is prevented.
The high-temperature and high-dust-resistant smoke gate valve for the coal-fired boiler disclosed by the utility model is operated as follows: the hydraulic station-1 is started to drive the oil cylinder 2-1 to act, the oil cylinder 2-1 drives the valve plate 4 to act, the valve plate 4 is in contact with the sealing ring 5, the flue is closed and sealed, the automatic jacking device 6 is in contact with the valve plate 4 and ensures that the valve plate 4 is in tight contact with the sealing ring 5, the valve is ensured to block the flue and keep sealing, a sufficient gap is reserved between the valve plate 4 and the outer frame 3, the expansion amount of the valve plate 4 due to high temperature can be contained, the sealing ring 5 is ensured to be always in contact with the valve plate 4, and the sealing ring 5 is not moved to the outside of the valve plate 4 due to deformation of the valve plate 4, so that leakage failure is caused.
The high-temperature-resistant high-dust-resistant smoke gate valve for the coal-fired boiler has the advantages of simple structure, low manufacturing and construction difficulty and easiness in implementation; the high-temperature-resistant high-dust smoke gate valve for the coal-fired boiler has the advantages of sealing and isolating functions under the conditions of high temperature resistance, dust resistance and corrosion resistance, and is low in cost and high in economic benefit.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should cover the present utility model according to the technical scheme and the inventive concept of the present utility model or the equivalent substitution or modification.
Claims (7)
1. A high temperature resistant high dust flue gate valve for coal fired boiler, its characterized in that: comprises a power device, a connecting device, an outer frame, a valve plate, a sealing ring, an automatic propping device and a guiding device; the power device is connected with the connecting device, the power device is fixed on the outer frame, the sealing ring is connected with the outer frame, the automatic jacking device is connected with the outer frame, and the guiding device is connected with the outer frame.
2. The high temperature and high dust resistant flue gate valve for a coal-fired boiler of claim 1, wherein: the power device is a motor, the connecting device is a connecting rod, the motor is connected with the connecting rod, and the connecting rod is connected with the valve plate.
3. The high temperature and high dust resistant flue gate valve for a coal-fired boiler of claim 1, wherein: the power device is a hydraulic station, the connecting device is an oil cylinder, the oil cylinder is connected with the hydraulic station, the oil cylinder is fixed on the outer frame, and the oil cylinder is connected with the valve plate.
4. The high temperature and high dust resistant flue gate valve for a coal-fired boiler of claim 1, wherein: the outer frame is a completely sealed device, the outer structure of the outer frame is rectangular or square at the upper part and semicircular at the bottom.
5. The high temperature and high dust resistant flue gate valve for a coal-fired boiler of claim 1, wherein: the bottom of the outer frame is provided with an ash deposition and discharge device.
6. The high temperature and high dust resistant flue gate valve for a coal-fired boiler of claim 1, wherein: the valve plate is made of 316L stainless steel, the external structure of the valve plate is rectangular or square at the upper part, and the bottom of the valve plate is semicircular.
7. The high temperature and high dust resistant flue gate valve for a coal-fired boiler of claim 1, wherein: the automatic jacking device is made of 316L stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320157237.5U CN218894990U (en) | 2023-02-08 | 2023-02-08 | High-temperature-resistant high-dust-resistant smoke gate valve for coal-fired boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320157237.5U CN218894990U (en) | 2023-02-08 | 2023-02-08 | High-temperature-resistant high-dust-resistant smoke gate valve for coal-fired boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218894990U true CN218894990U (en) | 2023-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320157237.5U Active CN218894990U (en) | 2023-02-08 | 2023-02-08 | High-temperature-resistant high-dust-resistant smoke gate valve for coal-fired boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218894990U (en) |
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2023
- 2023-02-08 CN CN202320157237.5U patent/CN218894990U/en active Active
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