CN216079860U - Particle collector online checking and cleaning device - Google Patents
Particle collector online checking and cleaning device Download PDFInfo
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- CN216079860U CN216079860U CN202122778734.0U CN202122778734U CN216079860U CN 216079860 U CN216079860 U CN 216079860U CN 202122778734 U CN202122778734 U CN 202122778734U CN 216079860 U CN216079860 U CN 216079860U
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Abstract
The utility model discloses an on-line checking and cleaning device for a particle collector. The utility model comprises a manual isolation valve for online inspection, a sewage cleaning electric valve, a sewage collector, a flange component, a sewage cleaning pipeline and a particle collector; the particle collector is arranged on a cold section pipeline of the reheater; the top of the dirt collector is connected to the bottom of the particle collector, and the online inspection manual isolation valve is installed on the dirt collector; the decontamination electric valve is arranged on the decontamination pipeline; one end of the dirt cleaning pipeline is connected with the side face of the dirt collector, and the other end of the dirt cleaning pipeline is connected with a temporary pipeline behind the target plate of the reheater. The utility model overcomes the defect that the traditional particle collector can only be checked and cleaned after shutdown by checking the matching use of the manual isolation valve and the decontamination electric valve on line, realizes the on-line check and cleaning of the particle collector, and avoids impurities from being forcibly brought into a secondary system after being enriched.
Description
Technical Field
The utility model belongs to the field of boilers of thermal power plants, and relates to an on-line particle collector checking and cleaning device which is applied to a steam blowpipe stage of a boiler of a thermal power generating unit.
Background
After the boiler is installed, impurities such as oxide skin, welding slag, rust and the like exist in system equipment, pipelines and joints of the newly-built generator set. Before the steam turbine rushes to rotate, the impurities are required to be cleaned, the damage of the blades of the steam turbine and the pipe explosion of the boiler are prevented, and the safe and stable operation of a unit is guaranteed.
In recent engineering practice, a boiler generally adopts a one-section blowing pipe steam blowing pipe mode, so that the blowing pipe construction period can be greatly shortened, and the consumption of resources such as coal, oil, demineralized water and the like can be reduced. In order to prevent large-particle impurities in the superheater and the main steam pipeline system from being brought into the reheater system, a particle collector is additionally arranged in front of the reheater system to filter the impurities.
In order to test the quality standard of the blowpipe, target shooting and acceptance are required, the target shooting process has great danger, the target shooting efficiency is improved, and ineffective target shooting is reduced. However, due to the difference between the pipeline arrangement and the initial cleanliness of the system among similar units, the blow pipe time is different, the blow pipe time cannot be effectively referred to each other, the optimal target shooting time cannot be accurately judged, and only the cleanliness of the grain collector can be checked to assist in inference, or a method of watching while shooting is carelessly adopted. The traditional grain collector device can not open the slag discharge port after stopping the furnace, cannot check and clean on line, has a limited function of judging the cleanliness of the system, and is more inclined to be checked and cleaned while stopping the furnace for many times in the project unless the slag discharge port is checked and cleaned. Due to the defect that cleaning can only be checked after furnace shutdown, the situation that impurity enrichment in a particle collector cannot be found and cleaned in time and is forcibly brought into a secondary system when the first-stage blowing pipe in the depressurization blowing pipe is too conducted also occurs. And to the unit of selecting steady voltage blowpipe, then can't master the reheater cold section steam extraction cleanliness condition in real time, No. 2 high heating can not in time put into use, has restricted the improvement of feedwater temperature, influences the steam flow, causes too, the reheater overtemperature and difficult regulation, influences the blowpipe process, even compels to suspend.
Therefore, the currently designed particle collector can only be checked after shutdown, the conditions are too harsh, the maximum effect of the particle collector cannot be achieved, and a particle collector online checking and cleaning device is urgently needed to solve the problem.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems of the existing equipment, the utility model provides an online inspection and cleaning device for a particle collector, which is used for solving the problem that the existing particle collector can only be inspected after furnace shutdown.
The utility model adopts the following technical scheme: an online inspection cleaning device for a particle collector comprises an online inspection manual isolation valve, a dirt cleaning electric valve, a dirt collector, a flange assembly, a dirt cleaning pipeline and the particle collector;
the particle collector is arranged on a cold section pipeline of the reheater;
the top of the dirt collector is connected to the bottom of the particle collector, and the online inspection manual isolation valve is installed on the dirt collector;
the decontamination electric valve is arranged on the decontamination pipeline;
one end of the dirt cleaning pipeline is connected with the side face of the dirt collector, and the other end of the dirt cleaning pipeline is connected with a temporary pipeline behind the target plate of the reheater.
Furthermore, a porous pipeline is arranged in the inner cylinder of the particle collector and is used for filtering large-particle impurities in the steam.
Furthermore, the particle collector comprises a particle collector inner cylinder and a particle collector outer cylinder; the outer cylinder of the particle collector is communicated with the inner cylinder of the particle collector through a porous pipeline, and the bottom of the outer cylinder of the particle collector is provided with the sewage collector.
Furthermore, the horizontal central axis of the outer cylinder of the particle collector is consistent with that of the inner cylinder of the particle collector, and the pipe diameter of the outer cylinder of the particle collector is larger than that of a pipeline at a cold section of the reheater.
Furthermore, the steam-facing surface of the inner cylinder of the particle collector is a guide cone, the inner angle of the guide cone is 55-65 degrees, and the guide cone is welded with the outer cylinder of the particle collector through a plurality of uniformly distributed reinforcing guide rib plates.
Furthermore, the material of the porous pipeline is consistent with that of the reheater cold section pipeline, the diameter of each hole is 10-12 mm, the total sectional area of each hole is 6 times larger than that of the reheater cold section pipeline, the holes are arranged in multiple rows along the axial direction of the particle collector, and each row is uniformly distributed.
Further, a flange assembly for checking the cleanliness of the particle collector is arranged at the bottom of the dirt collector.
Furthermore, the material of the decontamination pipeline is consistent with that of a reheater cold section pipeline.
Further, the manual isolation valve is checked online for structural sealing when fully closed.
Further, the structure when the decontamination electric valve is fully closed is sealed.
The utility model overcomes the defect that the existing particle collector can only be stopped for inspection by checking the matching between the manual isolation valve and the decontamination electric valve on line; through online timing inspection and clearance particle collector, avoid impurity to pile up the back and be brought into the secondary system by force, can regard as the judgement foundation of steam system cleanliness simultaneously, effectively infer reasonable shooting opportunity to avoid invalid shooting as far as possible, reduce the unit and open and stop the number of times, and realize 2 number high timely commissions that add, improve whole blowpipe efficiency.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure, 1-an online inspection manual isolation valve, 2-a dirt removing electric valve, 3-a dirt collector, 4-a flange assembly, 5-a dirt removing pipeline, 6-a particle collector inner cylinder, 7-a particle collector outer cylinder, 8-a particle collector, 9-a porous pipeline, 10-a flow guide cone, 11-a reinforcing guide rib plate and 12-a reheater cold section pipeline.
Detailed Description
The following detailed description of the embodiments of the present invention is provided in connection with the accompanying drawings and examples to make the technical solution of the present invention easier to understand and master. It should be understood that the embodiments described herein are only for the purpose of illustrating the present invention and are not to be construed as limiting the present invention.
Example 1
The embodiment is a particle collector online inspection cleaning device, which comprises an online inspection manual isolation valve 1, a dirt cleaning electric valve 2, a dirt collector 3, a flange component 4, a dirt cleaning pipeline 5 and a particle collector 8. The particle collector 8 consists of a particle collector inner cylinder 6 and a particle collector outer cylinder 7.
The particle collector 8 is arranged on a reheater cold section pipeline 12.
The top of the dirt collector 3 is connected with the bottom of the particle collector outer cylinder 7, and the on-line inspection manual isolation valve 1 is installed on the dirt collector 3.
The decontamination electric valve 2 is arranged on the decontamination pipeline 5. One end of the sewage disposal pipeline 5 is connected with the side surface of the sewage collector 3, and the other end is connected with a temporary pipeline behind the target plate of the reheater.
The outer collector cylinder 7 is communicated with a reheater cold section pipeline 12 positioned at an inlet of the collector, and the inner collector cylinder 6 is communicated with the reheater cold section pipeline 12 positioned at an outlet of the collector; the outer cylinder 7 of the particle collector is communicated with the inner cylinder 6 of the particle collector through a porous pipeline 9 and is used for filtering large-particle impurities in the steam.
The diameter of each hole of the porous pipeline 9 is 10-12 mm, the total cross section area of each hole is 6 times larger than that of the 12 cross sections of the reheater cold section pipeline, the holes are arranged in multiple rows along the axial direction of the particle collector, and each row is uniformly distributed. The holes are polished completely without sundries such as scrap iron and the like.
The structure when the manual isolating valve 1 is fully closed is checked on line, and the pressure bearing capacity of the manual isolating valve is checked on line and is at least 2 times of the pressure of a pipeline at a cold section of the reheater.
The structure when the decontamination electric valve 2 is fully closed is sealed, and DCS remote operation can be realized.
The length of the dirt collector 3 is larger than 1m, the pipe diameter is increased along with the increase of the pipe diameter of the particle collector outer barrel 7, the minimum pipe diameter is not smaller than 220mm, and a flange component 4 for checking the cleanliness of the particle collector is arranged at the bottom of the dirt collector 3.
The pipe diameter of the sewage disposal pipeline 5 is preferably 100-150 mm.
Example 2
The embodiment is a particle collector online inspection cleaning device, which comprises an online inspection manual isolation valve 1, a dirt cleaning electric valve 2, a dirt collector 3, a flange component 4, a dirt cleaning pipeline 5 and a particle collector 8. The particle collector 8 consists of a particle collector inner cylinder 6 and a particle collector outer cylinder 7.
The particle collector 8 is arranged on a reheater cold section pipeline 12.
The top of the dirt collector 3 is connected with the bottom of the particle collector outer cylinder 7, and the on-line inspection manual isolation valve 1 is installed on the dirt collector 3.
The decontamination electric valve 2 is arranged on the decontamination pipeline 5. One end of the sewage disposal pipeline 5 is connected with the side surface of the sewage collector 3, and the other end is connected with a temporary pipeline behind the target plate of the reheater.
The outer collector cylinder 7 is communicated with a reheater cold section pipeline 12 positioned at an inlet of the collector, and the inner collector cylinder 6 is communicated with the reheater cold section pipeline 12 positioned at an outlet of the collector; the outer cylinder 7 and the inner cylinder 6 of the particle collector are communicated through a porous pipeline 9 and used for filtering large-particle impurities in steam.
The material of the porous pipeline 9 is consistent with that of the reheater cold section pipeline 12, the diameter of each hole is 10-12 mm, the total sectional area of each hole is 6 times larger than that of the reheater cold section pipeline 12, the holes are arranged in multiple rows along the axial direction of the particle collector, and each row is uniformly distributed. The holes are polished completely without sundries such as scrap iron and the like.
The structure when the manual isolating valve 1 is fully closed is checked on line, and the pressure bearing capacity of the manual isolating valve is checked on line and is at least 2 times of the pressure of a pipeline at a cold section of the reheater.
The structure when the decontamination electric valve 2 is fully closed is sealed, and DCS remote operation can be realized.
The horizontal central axis of the particle collector outer cylinder 7 is consistent with that of the particle collector inner cylinder 6, and the pipe diameter of the particle collector outer cylinder 7 is larger than that of a reheater cold section pipeline 12 and is at least larger than two grades.
The material of the dirt collector 3 is consistent with that of a reheater cold section pipeline 12, the length of the dirt collector is larger than 1m, the pipe diameter of the dirt collector increases along with the increase of the pipe diameter of a particle collector outer barrel 7, the minimum pipe diameter is not smaller than 220mm, and a flange assembly 4 for checking the cleanliness of the particle collector is arranged at the bottom of the dirt collector 3.
The material of the sewage disposal pipeline 5 is consistent with that of the reheater cold section pipeline 12, and the pipe diameter is preferably 100-150 mm.
The steam facing surface of the inner cylinder 6 of the particle collector is a guide cone 10, the inner angle of the guide cone is 55-65 degrees, and the guide cone is welded with the outer cylinder 7 of the particle collector through a plurality of uniformly distributed reinforcing guide rib plates 11.
The specific working process of the utility model is as follows: when the boiler is blown, steam flow containing impurities enters the outer cylinder of the particle collector through a reheater cold section pipeline and diffuses towards the inner cylinder of the particle collector along the outer cylinder of the particle collector, and when the steam passes through the porous pipeline, large particle impurities such as welding slag, oxide skin and the like in the steam are blocked between the outer cylinder of the particle collector and the inner cylinder of the particle collector and are finally collected at the bottom of the dirt collector.
When the boiler normally blows, the manual isolation valve is kept to be fully opened in online inspection, the electric sewage disposal valve is fully closed, and the flange assembly at the bottom of the sewage collector is fastened. When the particle collector needs to be inspected on line, the manual isolation valve for online inspection is closed to a fully closed position to isolate purging steam, the flange assembly at the bottom of the dirt collector is slowly opened, the dirt condition is inspected, and the dirt is cleaned. When the particle collector needs to be cleaned on line, the manual isolation valve is kept fully opened for online inspection, the flange assembly at the bottom of the dirt collector is fastened, the dirt cleaning electric valve is opened, the dirt collector is closed after blowing for about 60 seconds, and impurities in the particle collector are carried by high-speed steam flow and blown away from the system through the dirt cleaning pipeline. The online inspection and cleaning of the particle collector are realized by the method without stopping the furnace.
Those not described in detail in this specification are well within the skill of the art. In addition, it should be noted that the above contents described in the present specification are only illustrations of the structures of the present invention. All equivalent variations of the structures, features and principles described in accordance with the present inventive concepts are intended to be included within the scope of the present patent. Modifications, additions, etc. to the specific embodiments described herein may occur to those skilled in the art without departing from the scope of the utility model as defined by the appended claims.
Claims (10)
1. An online inspection cleaning device for a particle collector is characterized by comprising an online inspection manual isolation valve (1), a dirt cleaning electric valve (2), a dirt collector (3), a flange assembly (4), a dirt cleaning pipeline (5) and a particle collector (8);
the particle collector (8) is arranged on a reheater cold section pipeline (12);
the top of the dirt collector (3) is connected with the bottom of the particle collector (8), and the online inspection manual isolation valve (1) is installed on the dirt collector (3);
the decontamination electric valve (2) is arranged on the decontamination pipeline (5);
one end of the sewage disposal pipeline (5) is connected with the side surface of the sewage collector (3), and the other end of the sewage disposal pipeline is connected with a temporary pipeline behind the target plate of the reheater.
2. The on-line particle collector inspection and cleaning device as claimed in claim 1, wherein a porous pipeline (9) is arranged in the particle collector (8) and is used for filtering large-particle impurities in steam.
3. The on-line particle collector inspection and cleaning device as claimed in claim 2, wherein the particle collector (8) comprises a particle collector inner cylinder (6) and a particle collector outer cylinder (7); the particle collector outer cylinder (7) is communicated with the particle collector inner cylinder (6) through a porous pipeline (9), and the bottom of the particle collector outer cylinder (7) is provided with the dirt collector (3).
4. The online particle collector inspection and cleaning device as claimed in claim 3, wherein the horizontal central axis of the outer particle collector barrel (7) is consistent with that of the inner particle collector barrel (6), and the pipe diameter of the outer particle collector barrel (7) is larger than that of the reheater cold section pipe (12).
5. The online inspection and cleaning device for the particle collector according to claim 3, wherein the steam facing surface of the inner barrel (6) of the particle collector is a guide cone (10), the inner angle of the guide cone is 55-65 degrees, and the guide cone is welded with the outer barrel (7) of the particle collector through a plurality of uniformly distributed reinforcing guide rib plates (11).
6. The online inspection and cleaning device for the particle collector as claimed in claim 2 or 3, wherein the material of the porous pipe (9) is consistent with that of the reheater cold section pipe (12), the diameter of each hole is 10-12 mm, the total cross-sectional area of the holes is greater than 6 times of that of the reheater cold section pipe (12), and the holes are arranged in multiple rows along the axial direction of the particle collector, and each row is uniformly distributed.
7. An on-line inspection cleaning device for particle collectors, according to any of claims 1-5, characterized in that the bottom of the dirt collector (3) is provided with a flange assembly (4) for the cleanliness inspection of the particle collector.
8. The on-line inspection and cleaning device for the particle collectors as claimed in any one of claims 1 to 5, wherein the material of the cleaning pipe (5) is consistent with that of the reheater cold section pipe (12).
9. An on-line inspection cleaning device for a particle collector according to any one of claims 1-5, characterized in that the on-line inspection is performed for the structural seal when the manual isolation valve (1) is fully closed.
10. The on-line inspection and cleaning device for the particle collectors is characterized in that the structure of the cleaning electric valve (2) is sealed when the cleaning electric valve is completely closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122778734.0U CN216079860U (en) | 2021-11-11 | 2021-11-11 | Particle collector online checking and cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122778734.0U CN216079860U (en) | 2021-11-11 | 2021-11-11 | Particle collector online checking and cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216079860U true CN216079860U (en) | 2022-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122778734.0U Active CN216079860U (en) | 2021-11-11 | 2021-11-11 | Particle collector online checking and cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216079860U (en) |
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2021
- 2021-11-11 CN CN202122778734.0U patent/CN216079860U/en active Active
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