Ash taking device for boiler of thermal power plant
By designing a boiler ash extraction device for thermal power plant controlled by negative pressure fan and solenoid valve, the problems of slow cleaning speed and dust pollution of the ash bucket are solved, and the effect of fast dust-free cleaning of the ash bucket is achieved.
Patent Information
- Application Number
- CN202421610431.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-07-09
AI Technical Summary
The boiler of thermal power plant produces a large amount of dust during the ash extraction process, which affects the health of staff and is slow to clean. Traditional methods cannot quickly and effectively clean the ash bucket.
A boiler ash extraction device for thermal power plants is designed, including a negative pressure fan, a solenoid valve and ash bucket with a specific structure. The negative pressure generated by the negative pressure fan is used to suck in dust and control the air flow through the solenoid valve, combining the special design of the ash bucket to achieve rapid dust-free cleaning.
The dust in the ash bucket is quickly cleaned up without dust, avoiding dust pollution, and not affecting the normal power generation operation of the thermal power plant.
Smart Images
Figure CN223076939U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of boilers in thermal power plants, and particularly relates to an ash extraction device for boilers in thermal power plants. Background Technique
[0002] When a boiler in a thermal power plant generates electricity, the pulverized coal is sprayed into the furnace for suspended combustion. The burning particulate matter will fall to the bottom of the furnace under the action of gravity and then enter the ash hopper for storage. When the ash hopper is full, it needs to be discharged onto the conveyor belt for transportation. During this discharge process, a large amount of dust will be generated when the furnace ash falls, resulting in dust in the on-site air, affecting the health of the staff and making the site very dirty after the dust settles. Moreover, the traditional ash extraction method is slow and cannot quickly clean the ash hopper. For this reason, we propose an ash extraction device for boilers in thermal power plants. Content of the Utility Model
[0003] The main purpose of the utility model is to provide an ash extraction device for boilers in thermal power plants, which can effectively solve the problems in the background technique.
[0004] To achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0005] An ash extraction device for boilers in thermal power plants includes a furnace. The lower port of the furnace is connected to a first discharge pipe. The lower end of the first discharge pipe is connected to a collection structure. The lower port of the collection structure is connected to a second discharge pipe. The lower port of the second discharge pipe is connected to a guiding structure. The discharge port of the guiding structure is connected to a storage bin. The upper port of the storage bin is fixedly connected with a negative pressure fan. The lower port of the negative pressure fan is fixedly connected with a filter cover inside the storage bin. The lower port of the storage bin is fixedly connected with a fourth solenoid valve.
[0006] Furthermore, a first solenoid valve is fixedly installed on the surface of the first discharge pipe, and a second solenoid valve is fixedly installed on the surface of the second discharge pipe.
[0007] Furthermore, the collection structure includes an ash hopper, an upper air inlet, an opening and closing handle, an arc-shaped hole, an annular sliding groove, a sliding ring, and a lower air inlet. The upper surface of the ash hopper near the edge is provided with an upper air inlet. There are fifteen upper air inlets, which are evenly arranged at the edge of the upper surface of the ash hopper. The upper surface of the ash hopper near the edge is provided with an arc-shaped hole. The inner upper surface of the ash hopper near the edge is fixedly installed with an annular sliding groove. The annular sliding groove is internally slidably installed with a sliding ring. The surface of the sliding ring is provided with a lower air inlet. The number of the lower air inlets is fifteen in total, and they are evenly arranged on the surface of the sliding ring. An opening and closing handle is fixedly installed in the arc-shaped hole on the upper surface of the sliding ring.
[0008] Furthermore, the upper air inlet and the lower air inlet are arranged in a matching manner.
[0009] Furthermore, the export structure includes an inclined slideway, a partition board and a third solenoid valve. A third solenoid valve is fixedly installed at a position close to one end of the lower surface of the inclined slideway, and a partition board is fixedly installed at a position between the second discharge pipe and the third solenoid valve on the upper surface inside the inclined slideway.
[0010] Furthermore, a gap of five centimeters is reserved between the lower surface of the partition board and the inclined slideway.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] In the utility model, the ash extraction device for a thermal power plant boiler can quickly suck the dust in the ash hopper without dust, with a fast cleaning speed, and does not affect the normal power generation operation of the thermal power plant. Moreover, it can suck the external air flow through the generated negative pressure to blow clean the dust inside the ash hopper, achieving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a schematic diagram of the overall structure of an ash extraction device for a thermal power plant boiler of the utility model;
[0014] Figure 2 is a partial sectional view showing an ash extraction device for a thermal power plant boiler of the utility model;
[0015] Figure 3 is an enlarged sectional view of the collection structure of an ash extraction device for a thermal power plant boiler of the utility model;
[0016] Figure 4 is a partially enlarged sectional view of the collection structure of an ash extraction device for a thermal power plant boiler of the utility model.
[0017] In the figure: 1, furnace; 2, first discharge pipe; 201, first solenoid valve; 3, collection structure; 301, ash hopper; 302, upper air inlet; 303, opening and closing handle; 304, arc hole; 305, annular chute; 306, sliding ring; 307, lower air inlet; 4, second discharge pipe; 401, second solenoid valve; 5, export structure; 501, inclined slideway; 502, partition board; 503, third solenoid valve; 6, storage bin; 7, negative pressure fan; 8, filter hood; 9, fourth solenoid valve. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] In order to make the technical means, creative features, achieved purposes and functions of the utility model easy to understand, the utility model will be further described below in conjunction with specific embodiments.
[0019] As Figures 1-4As shown in the figure, a coal ash extraction device for a thermal power plant boiler includes a furnace 1. The lower port of the furnace 1 is connected to a first discharge pipe 2. The lower end of the first discharge pipe 2 is connected to a collection structure 3. The lower port of the collection structure 3 is connected to a second discharge pipe 4. The lower port of the second discharge pipe 4 is connected to a guiding structure 5. The discharge port of the guiding structure 5 is connected to a storage bin 6. A negative pressure fan 7 is fixedly connected to the upper port of the storage bin 6. A filter cover 8 is fixedly connected to the lower port of the negative pressure fan 7 inside the storage bin 6. A fourth solenoid valve 9 is fixedly connected to the lower port of the storage bin 6. When the storage bin 6 is full of ash, it can be discharged to a transport vehicle by opening the fourth solenoid valve 9 and transported away;
[0020] A first solenoid valve 201 is fixedly installed on the surface of the first discharge pipe 2, and a second solenoid valve 401 is fixedly installed on the surface of the second discharge pipe 4; The collection structure 3 includes an ash hopper 301, an upper air inlet 302, an opening and closing handle 303, an arc-shaped hole 304, an annular sliding groove 305, a sliding ring 306, and a lower air inlet 307. An upper air inlet 302 is opened at a position near the edge of the upper surface of the ash hopper 301. There are fifteen upper air inlets 302, and they are evenly arranged at the edge position of the upper surface of the ash hopper 301. An arc-shaped hole 304 is opened at a position near the edge of the upper surface of the ash hopper 301. An annular sliding groove 305 is fixedly installed at a position near the edge of the inner upper surface of the ash hopper 301. A sliding ring 306 is slidably installed inside the annular sliding groove 305. A lower air inlet 307 is opened on the surface of the sliding ring 306. The number of lower air inlets 307 is fifteen in total, and they are evenly arranged on the surface of the sliding ring 306. An opening and closing handle 303 is fixedly installed on the upper surface of the sliding ring 306 inside the arc-shaped hole 304. When the sliding ring 306 is moved so that the lower air inlet 307 is not aligned with the upper air inlet 302, the upper port of the ash hopper 301 can be closed; The upper air inlet 302 and the lower air inlet 307 are set to match each other; The guiding structure 5 includes an inclined slideway 501, a partition plate 502, and a third solenoid valve 503. A third solenoid valve 503 is fixedly installed at a position near one end of the lower surface of the inclined slideway 501. A partition plate 502 is fixedly installed at a position between the second discharge pipe 4 and the third solenoid valve 503 on the inner upper surface of the inclined slideway 501. The setting of the partition plate 502 is to reduce the air inlet port and increase the flow rate, so as to effectively wash away the ash at the lower port of the second discharge pipe 4 and avoid blockage; A gap of five centimeters is reserved between the lower surface of the partition plate 502 and the inclined slideway 501.
[0021] It should be noted that the present utility model is a boiler ash extraction device for a thermal power plant. When the ash in the first discharge pipe 2 needs to be cleaned, the first solenoid valve 201 is closed, and the second solenoid valve 401 and the third solenoid valve 503 are opened. At this time, the negative pressure fan 7 is started to rapidly generate negative pressure in the storage bin 6. At this time, the furnace ash is discharged from the second discharge pipe 4 into the inclined slideway 501, and then the gas replenished from the outside enters the inclined slideway 501 through the third solenoid valve 503, and then the air flow speed is increased through the narrow gap under the baffle 502, so as to quickly blow the furnace ash at the lower port of the second discharge pipe 4 into the storage bin 6, and fall onto the inner lower surface of the storage bin 6 under the action of gravity and accumulate. After the cleaning is completed, the sliding ring 306 can be rotated by driving the opening and closing handle 303 first, so that the lower air inlet 307 and the upper air inlet 302 are aligned, so that the inside of the ash hopper 301 is communicated with the outside. Then the third solenoid valve 503 is closed. At this time, all the outside air flows into the ash hopper 301 from the upper air inlet 302. In this way, the high-speed impact flow can blow off the ash on the inner wall of the ash hopper 301, and then it is carried into the storage bin 6 by the air flow.
[0022] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.
Claims
1. A boiler ash extraction device for a thermal power plant, characterized in that: It includes a furnace chamber (1), a first discharge pipe (2) is connected to the lower port of the furnace chamber (1), a collection structure (3) is connected to the lower end of the first discharge pipe (2), a second discharge pipe (4) is connected to the lower port of the collection structure (3), a discharge structure (5) is connected to the lower port of the second discharge pipe (4), a storage bin (6) is connected to the discharge port of the discharge structure (5), a negative pressure fan (7) is fixedly connected to the upper port of the storage bin (6), a filter cover (8) is fixedly connected to the lower port of the negative pressure fan (7) inside the storage bin (6), and a fourth solenoid valve (9) is fixedly connected to the lower port of the storage bin (6).
2. The ash extraction device for a thermal power plant boiler according to claim 1, wherein: A first solenoid valve (201) is fixedly installed on the surface of the first discharge pipe (2), and a second solenoid valve (401) is fixedly installed on the surface of the second discharge pipe (4).
3. The ash extraction device for a thermal power plant boiler according to claim 2, characterized in that: The collection structure (3) includes a ash hopper (301), an upper air inlet (302), an opening and closing handle (303), an arc hole (304), an annular sliding groove (305), a sliding ring (306) and a lower air inlet (307). The upper air inlet (302) is opened at a position near the edge of the upper surface of the ash hopper (301). There are fifteen upper air inlets (302), and they are evenly arranged at the edge position of the upper surface of the ash hopper (301). The arc hole (304) is opened at a position near the edge of the upper surface of the ash hopper (301). An annular sliding groove (305) is fixedly installed at a position near the edge of the inner upper surface of the ash hopper (301). A sliding ring (306) is slidably installed inside the annular sliding groove (305). The lower air inlet (307) is opened on the surface of the sliding ring (306). The number of the lower air inlets (307) is fifteen in total, and they are evenly arranged on the surface of the sliding ring (306). An opening and closing handle (303) is fixedly installed inside the arc hole (304) on the upper surface of the sliding ring (306).
4. The ash extraction device for a thermal power plant boiler according to claim 3, characterized in that: The upper air inlet (302) and the lower air inlet (307) are arranged in a matching manner.
5. The ash extraction device for a thermal power plant boiler according to claim 4, characterized in that: The discharge structure (5) includes an inclined slideway (501), a partition board (502) and a third solenoid valve (503). The third solenoid valve (503) is fixedly installed at a position near one end of the lower surface of the inclined slideway (501). A partition board (502) is fixedly installed at a position between the second discharge pipe (4) and the third solenoid valve (503) on the inner upper surface of the inclined slideway (501).
6. The ash extraction device for a thermal power plant boiler according to claim 5, characterized in that: A gap of five centimeters is reserved between the lower surface of the partition board (502) and the inclined slideway (501).