CN203848861U - Simulation device used for boiler superheater oxide skin flushing testing - Google Patents
Simulation device used for boiler superheater oxide skin flushing testing Download PDFInfo
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- CN203848861U CN203848861U CN201420262943.7U CN201420262943U CN203848861U CN 203848861 U CN203848861 U CN 203848861U CN 201420262943 U CN201420262943 U CN 201420262943U CN 203848861 U CN203848861 U CN 203848861U
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Abstract
The utility model relates to a simulation device used for boiler superheater oxide skin flushing testing. The simulation device includes a simulation superheater tube as well as a water washing device and an air blowing device which are connected with the simulation superheater tube; the water flushing device comprises a water tank and a flushing pump connected with the water tank; the flushing pump is communicated with the inlet of a buffering tank through a first cut-off valve; the outlet of the buffering tank is communicated with the inlet of the simulation superheater tube through a second cut-off valve; the air blowing device comprises a nitrogen cylinder or air compressor; the nitrogen cylinder or air compressor is communicated with the inlet of the buffering tank; the outlet of the buffering tank is communicated with the inlet of the simulation superheater tube through a fifth cut-off valve; a pipeline of the outlet of the simulation superheater tube is provided with a seventh cut-off valve used for air discharge; and the buffering tank is provided with a six cut-off valve used for air discharge. The simulation device of the utility model is provided with the water flushing device and the compressed air blowing device, and therefore, with the simulation device adopted, water flushing and compressed air blowing for removing the inner oxide skin of a superheater tube can be simulated, and a water flushing or air blowing effect of the oxide skin of a superheater can be verified.
Description
Technical field
The utility model relates to boiler superheater oxide skin douching technique field, relates in particular to a kind of analogue means for boiler superheater oxide skin irrigation tests.
Background technology
Subcritical, super (super-) critical thermal power generation unit, due to the oxidation of steam to steel, along with the increase of working time, the growth of superheater, reheater tube inner wall oxide skin is inevitable.And in compressor emergency shutdown process, due to the sharply variation of temperature, the thermal expansivity of oxide skin and the difference of thermal expansion coefficients of superheater tube steel are larger in superheater tube, cause unavoidably concentrated the coming off of the interior oxide skin of superheater tube.Superheater for vertical, concentrate the oxide skin coming off to be deposited in lower elbow, easily cause elbow under superheater to stop up or Partial Blocking, in the superheater tube that causes being blocked, steam flow reduces, cooling deficiency, causes unit starting operation that the overheated booster of superheater tube occurs in a short time.
Therefore, before unit starting operation, the oxide skin that effectively removing has come off, guarantees that heat exchanger tube pipeline is unimpeded, is to guarantee that unit safety starts the important means of operation.To the removal method of the oxide skin having come off, be pipe cutting method of cleaning at present.The method detects the dropping situations of superheater oxide skin after need to shutting down, and the pipe then lower elbow oxide skin accumulating amount being acquired a certain degree carries out pipe cutting cleaning again, after having cleared up, again recovers.It is various that the method not only walks order, and when the oxide skin amount of coming off is larger, disposal costs are high, long in time limit.If rinse or the mode of air purge is carried out the removing of oxide skin by water, can greatly improve elimination efficiency, effectively shorten the cleaning duration.And the research of the method must be carried out in laboratory a large amount of technical studies and compliance test result test.
Summary of the invention
In order to address the above problem, the purpose of this utility model is to provide a kind of analogue means for boiler superheater oxide skin irrigation tests, on same test unit, Simulated Water flushing simultaneously and pressurized air purge two kinds of operating modes removing oxide skin in superheater tube.
For reaching above object, the utility model adopts following technical scheme:
For an analogue means for boiler superheater oxide skin irrigation tests, comprise simulation superheater tube 7 and the water flushing device and the compressed air blowing cleaner that are connected with simulation superheater tube 7, described water flushing device comprises water tank 1, the flushing pump 2 being connected with water tank 1, flushing pump 2 is communicated with the entrance of surge tank 4 by the first stop valve 3, the outlet of surge tank 4 is communicated with the entrance of simulation superheater tube 7 by the second stop valve 5, on the pipeline of surge tank 4 and 7 connections of simulation superheater tube, water ga(u)ge 6 and the first tensimeter 19 are set, the outlet of described simulation superheater tube 7 is communicated with by the 8th stop valve 18 and water tank 1, on the pipeline of simulation superheater tube 7 and water tank 1 connection, the second tensimeter 20 is set, described compressed air blowing cleaner comprises nitrogen cylinder or air compressor machine 8, the entrance of nitrogen cylinder or air compressor machine 8 and surge tank 4 is communicated with, on the pipeline of nitrogen cylinder or air compressor machine 8 and surge tank 4 connections, be disposed with the 3rd tensimeter 22, the 3rd stop valve 9, heating tank 10, the second thermometer 23 and the 4th stop valve 11, the outlet of described surge tank 4 is communicated with the entrance of simulation superheater tube 7 by the 5th stop valve 12, on the pipeline of surge tank 4 and 7 connections of simulation superheater tube, air flowmeter 13 and the first tensimeter 19 are set, the 7th stop valve 17 is set on the pipeline of the outlet of described simulation superheater tube 7, be used for Bas Discharged, at simulation superheater tube 7 and 17 of the 7th stop valves, the first thermometer 21 is set, at described surge tank 4, be also provided for the 6th stop valve 16 of exhaust.
Described heating tank 10 heats it by the well heater 15 being connected with temperature controller 14.
In the utility model device, be provided with water flushing device and compressed air blowing cleaner, simultaneously Simulated Water is rinsed and pressurized air purges two kinds of operating modes removing oxide skin in superheater tube, and the effect that can be oxidized severe edema due to hypofunction of the spleen flushing or air purge to superheater by the utility model device is verified.
Accompanying drawing explanation
Accompanying drawing is the utility model apparatus structure schematic diagram.
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
As shown in drawings, a kind of analogue means for boiler superheater oxide skin irrigation tests of the utility model, comprises simulation superheater tube 7 and the water flushing device and the compressed air blowing cleaner that are connected with simulation superheater tube 7, described water flushing device comprises water tank 1, the flushing pump 2 being connected with water tank 1, flushing pump 2 is communicated with the entrance of surge tank 4 by the first stop valve 3, the outlet of surge tank 4 is communicated with the entrance of simulation superheater tube 7 by the second stop valve 5, on the pipeline of surge tank 4 and 7 connections of simulation superheater tube, water ga(u)ge 6 and the first tensimeter 19 are set, the outlet of described simulation superheater tube 7 is communicated with by the 8th stop valve 18 and water tank 1, on the pipeline of simulation superheater tube 7 and water tank 1 connection, the second tensimeter 20 is set, described compressed air blowing cleaner comprises nitrogen cylinder or air compressor machine 8, the entrance of nitrogen cylinder or air compressor machine 8 and surge tank 4 is communicated with, on the pipeline of nitrogen cylinder or air compressor machine 8 and surge tank 4 connections, be disposed with the 3rd tensimeter 22, the 3rd stop valve 9, heating tank 10, the second thermometer 23 and the 4th stop valve 11, the outlet of described surge tank 4 is communicated with the entrance of simulation superheater tube 7 by the 5th stop valve 12, on the pipeline of surge tank 4 and 7 connections of simulation superheater tube, air flowmeter 13 and the first tensimeter 19 are set, the 7th stop valve 17 is set on the pipeline of the outlet of described simulation superheater tube 7, be used for Bas Discharged, at simulation superheater tube 7 and 17 of the 7th stop valves, the first thermometer 21 is set, at described surge tank 4, be also provided for the 6th stop valve 16 of exhaust.
As preferred implementation of the present utility model, described heating tank 10 heats it by the well heater 15 being connected with temperature controller 14.
Principle of work of the present utility model is: when valve the first stop valve 3, the second stop valve 5 and the 8th stop valve 18 are opened, when other stop valves are closed, start flushing pump 2, can carry out water flushing to simulation superheater tube 7.By the reading of flowmeter 6 and the internal diameter of simulation superheater tube 7, can calculate irrigation flow rate; Reading by tensimeter the first tensimeter 19 and the second tensimeter 20 can be determined the resistance to flow of simulating superheater tube 7 in flushing process.
When valve the 3rd stop valve 9, the 4th stop valve 11, the 5th stop valve 12 and the 7th stop valve 17 are opened, when other stop valves are closed, start nitrogen cylinder or air compressor machine 8, can carry out air purge to simulation superheater tube 7.Reading by tensimeter the first tensimeter 19, the second tensimeter 20 and the 3rd tensimeter 22 can each position of determining device pressure condition, 23 the reading by thermometer the first thermometer 21 and the second thermometer can each position of determining device temperature conditions, and by temperature controller 14 mediate with control stable.
Claims (2)
1. for an analogue means for boiler superheater oxide skin irrigation tests, it is characterized in that: comprise simulation superheater tube (7) and the water flushing device and the compressed air blowing cleaner that are connected with simulation superheater tube (7);
Described water flushing device comprises water tank (1), the flushing pump (2) being connected with water tank (1), flushing pump (2) is communicated with the entrance of surge tank (4) by the first stop valve (3), the outlet of surge tank (4) is communicated with the entrance of simulation superheater tube (7) by the second stop valve (5), on the pipeline of surge tank (4) and simulation superheater tube (7) connection, water ga(u)ge (6) and the first tensimeter (19) are set, the outlet of described simulation superheater tube (7) is communicated with by the 8th stop valve (18) and water tank (1), on the pipeline of simulation superheater tube (7) and water tank (1) connection, the second tensimeter (20) is set,
Described compressed air blowing cleaner comprises nitrogen cylinder or air compressor machine (8), the entrance of nitrogen cylinder or air compressor machine (8) and surge tank (4) is communicated with, on the pipeline of nitrogen cylinder or air compressor machine (8) and surge tank (4) connection, be disposed with the 3rd tensimeter (22), the 3rd stop valve (9), heating tank (10), the second thermometer (23) and the 4th stop valve (11), the outlet of described surge tank (4) is communicated with the entrance of simulation superheater tube (7) by the 5th stop valve (12), on the pipeline of surge tank (4) and simulation superheater tube (7) connection, air flowmeter (13) and the first tensimeter (19) are set, on the pipeline of described simulation superheater tube (7) outlet, the 7th stop valve (17) is set, be used for Bas Discharged, between simulation superheater tube (7) and the 7th stop valve (17), the first thermometer (21) is set, at described surge tank (4), be also provided for the 6th stop valve (16) of exhaust.
2. a kind of analogue means for boiler superheater oxide skin irrigation tests according to claim 1, is characterized in that: described heating tank (10) heats it by the well heater (15) being connected with temperature controller (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420262943.7U CN203848861U (en) | 2014-05-21 | 2014-05-21 | Simulation device used for boiler superheater oxide skin flushing testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420262943.7U CN203848861U (en) | 2014-05-21 | 2014-05-21 | Simulation device used for boiler superheater oxide skin flushing testing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203848861U true CN203848861U (en) | 2014-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420262943.7U Expired - Fee Related CN203848861U (en) | 2014-05-21 | 2014-05-21 | Simulation device used for boiler superheater oxide skin flushing testing |
Country Status (1)
| Country | Link |
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| CN (1) | CN203848861U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983299A (en) * | 2014-05-21 | 2014-08-13 | 西安热工研究院有限公司 | Simulation system for boiler superheater oxide skin flushing test |
-
2014
- 2014-05-21 CN CN201420262943.7U patent/CN203848861U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983299A (en) * | 2014-05-21 | 2014-08-13 | 西安热工研究院有限公司 | Simulation system for boiler superheater oxide skin flushing test |
| CN103983299B (en) * | 2014-05-21 | 2016-04-13 | 西安热工研究院有限公司 | A kind of simulation system for boiler superheater oxide skin irrigation tests |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20200521 |