CN102192819B - Quick heating process for pre-service hydrostatic test of secondary side of steam generator - Google Patents
Quick heating process for pre-service hydrostatic test of secondary side of steam generator Download PDFInfo
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- CN102192819B CN102192819B CN 201010130479 CN201010130479A CN102192819B CN 102192819 B CN102192819 B CN 102192819B CN 201010130479 CN201010130479 CN 201010130479 CN 201010130479 A CN201010130479 A CN 201010130479A CN 102192819 B CN102192819 B CN 102192819B
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Abstract
The invention belongs to the field of pressurized water reactor nuclear power plants, and specifically discloses a quick heating process for a pre-service hydrostatic test of the secondary side of a steam generator. The process comprises the following steps: communicating a high-position temporary connection pipe with a high-position temporary interface, and communicating a hand hole temporary connection pipe with a hand hole temporary interface; filling the secondary side with cooled demineralized water; opening a water inlet pipe isolation valve, and pouring the demineralized water into a heating water tank; closing the water inlet pipe isolation valve, a hand hole temporary interface drain valve and a high-position temporary interface exhaust valve; starting a circulating pump, and when the water flow in the circulating backflow pipe reaches a certain flow rate, starting the heating water tank; pouring the heated demineralized water into the secondary side by the circulating pump, wherein the heated demineralized water and the demineralized water in the secondary side are mixed and flow back to the heating water tank for circular heating; and when the temperature of a shell of the secondary side reaches the regulated temperature range, stopping heating of the heating water tank. The process provided by the invention can realize quick and uniform heating of the shell of the secondary side of the steam generator.
Description
Technical field
The invention belongs to PWR nuclear power plant (pressurized-water reactor nuclear power plant) field, be specifically related to be applied to the front steam generator secondary side housing heating process of PWR nuclear power plant (station) the steam generator secondary side hydraulic testing.
Background technology
Secondary pre-service hydraulic pressure test of steam generator is important node and the milestone in the PWR nuclear power plant nuclear island equipment erection schedule.According to the testing regulations of this test, before pressure build-up test, the steam generator secondary side housing must be risen to uniform temperature, and guarantee to boost in steam generator secondary side, temperature that the temperature in the release process of the test is not less than the case material embrittlement.
The secondary pre-service hydraulic pressure test of steam generator of nuclear power station in the past all is to provide provisional package system to carry out this test by nuclear power technology support company in the world.The intensification of its steam generator shell is to consider to realize by the method that directly fills hot water.Mainly there are the following problems for this temperature-rising method: because the steam generator secondary side water consumption is very large, its required hot water that heats up can't disposablely be filled with continuously, can only realize by modes such as large-scale tank car heat stepwise water fillings; Because the area of dissipation of steam generator secondary side is larger, the hot water that is filled before often finding when follow-up hot water fills has been cooled, thereby causes the efficiency of heating surface very low; The temperature elevation system complexity that the method is required and the space that takies are larger; The on-the-spot temporary interface of the required temperature elevation system of the method is more, poor stability, required test operation personnel are more.
Summary of the invention
The object of the present invention is to provide a kind of quick heating process for pre-service hydrostatic test of secondary side of steam generator, this technique can realize quick, the evenly intensification of steam generator secondary side housing.
Realize the technical scheme of the object of the invention: a kind of secondary pre-service hydraulic pressure test of steam generator method that is rapidly heated, it may further comprise the steps:
(1) the interim adapter of a high position is communicated with high-order temporary interface, the interim adapter of hand hole is connected with the hand hole temporary interface;
(2) fill with the demineralized water of cooling in the steam generator secondary side;
(3) open the water inlet pipe isolation valve, in demineralized water injection heating water tank;
(4) close water inlet pipe isolation valve, hand hole temporary interface drain valve and high-order temporary interface air release;
(5) start ebullator, when the current in the circulating reflux pipe reach certain flow, start heating water tank, the demineralized water in it is heated;
(6) ebullator will be in the heating water tank in the demineralized water steam injection generator secondary side through heating, and the interior demineralized water of the demineralized water after the heating and steam generator secondary side flows back to heating water tank and carries out circulating-heating after mixing;
(7) when the steam generator secondary side case temperature reaches the temperature range of regulation, the heating water tank stopped heating.
In the circulating-heating process of described step (6), be interrupted and open the water tank air release to discharge the gas that discharges in the demineralized water.
Useful technique effect of the present invention: technique of the present invention is directly filled with cold water (demineralized water) in steam generator secondary side, high power density electric heating water tank provides thermal source for the Heating Cyclic loop, heated by circulating-heating process system direct circulation, demineralized water in the steam generator is carried out circulating-heating so that quick, the evenly intensification of steam generator secondary side housing can evenly rise to the steam generator secondary side case temperature more than 45 ℃ by 15 ℃ within 24 hours time.And adopt ebullator and high power density electric heating water tank that demineralized water is carried out circulating-heating, and the efficiency of heating surface is high, and its efficiency of heating surface improves 1 times at least compared with prior art.
Description of drawings
Fig. 1 is that hydraulic pressure tries to be rapidly heated the process system synoptic diagram before a kind of steam generator secondary side labour provided by the present invention.
Among the figure: 1. steam generator secondary side; 2. steam generator secondary side hand hole temporary interface; 3. the high-order temporary interface of steam generator secondary side; 4. high power density electric heating water tank; 5. ebullator; 6. water container backwater pipe; 7. the first circulating-heating flexible pipe; 8. the second high pressure isolation valve; 9. radiator drain; 10. Heating Cyclic flowmeter; 11. the second circulating-heating flexible pipe; 12. the first high pressure isolation valve; 13. high-order interim the adapter; 14. hand hole is taken over temporarily; 15. high-order interim air release; 16. the interim drain valve of hand hole; 17. water tank gas outlet; 18. water tank air release; 19. funnel; 20. the hydrophobic isolation valve of funnel; 21. System drainage interface; 22. circulating reflux pipe; 23. ebullator reverse flow valve; 24. water inlet pipe; 25. water inlet pipe isolation valve; 26. system's water inlet interface.
Embodiment
Below in conjunction with drawings and Examples the present invention is described in further detail.
As shown in Figure 1, the hydraulic pressure examination process system that is rapidly heated before a kind of steam generator secondary side labour, it comprises high power density electric heating water tank 4, ebullator 5, the first circulating-heating flexible pipe 7, the second high pressure isolation valve 8, Heating Cyclic flowmeter 10, the second circulating-heating flexible pipe 11, the first high pressure isolation valve 12, high-orderly takes over 13 temporarily, hand hole takes over 14 temporarily, high-order temporary interface air release 15, the interim drain valve 16 of hand hole, funnel 19, the hydrophobic isolation valve 20 of funnel, System drainage interface 21, circulating reflux pipe 22 and ebullator reverse flow valve 23.
As shown in Figure 1, high power density electric heating water tank 4 bottoms arrange respectively radiator drain 9, water container backwater pipe 6, water inlet pipe 24.Water inlet pipe 24 is provided with water inlet pipe isolation valve 25, and suspend end and the system of water inlet pipe 24 interface 26 of intaking is communicated with.The top of high power density electric heating water tank 4 arranges gas outlet 17, be provided with water tank air release 18 on this gas outlet 17, the outlet of water tank gas outlet 17 arranges a funnel 19, and the outlet of this funnel 19 is connected with System drainage interface 21 by the hydrophobic isolation valve 20 of funnel.
As shown in Figure 1, the suction inlet of ebullator 5 is communicated with high power density electric heating water tank 4 bottoms by radiator drain 9, and the outlet of ebullator 5 is taken over 14 by circulating reflux pipe 22, the second circulating-heating flexible pipe 11, hand hole successively temporarily and is connected with steam generator secondary side hand hole temporary interface 2.Be provided with Heating Cyclic flowmeter 10 on the circulating reflux pipe 22, the interim adapter on 21 of hand hole is provided with the first high pressure isolation valve 12, and hand hole is taken on 21 and at the second circulating-heating flexible pipe 11 and have and be provided with the interim drain valve 16 of hand hole between the first high pressure isolation valve 12 temporarily.Between the outlet of ebullator 5 and suction inlet, recirculatory pipe is set, is provided with ebullator reverse flow valve 23 on the recirculatory pipe.
As shown in Figure 1, high power density electric heating water tank 4 is by return pipe 6, the first circulating-heating flexible pipe 7, the high-order interim 13 formation Heating Cyclic return pipings that are connected with the high-order temporary interface 3 of steam generator secondary side of taking over.High-order interim adapter 13 is provided with the second high pressure isolation valve 8, and a high position is taken on 13 temporarily and be provided with high-order temporary interface air release 15 between the first circulating-heating flexible pipe 7 and the second high pressure isolation valve 8.
As shown in Figure 1, a kind of quick heating process for pre-service hydrostatic test of secondary side of steam generator, it may further comprise the steps:
(1) takes over 13 and is communicated with the high-order temporary interface 3 of steam generator secondary side a high position is interim, temporarily adapter of hand hole 14 is connected with steam generator secondary side hand hole temporary interface 2;
(2) fill with the demineralized water of cooling in the steam generator secondary side 1;
(3) open water inlet pipe isolation valve 25, intake interface 26, water inlet pipe 24 with in the demineralized water injection heating water tank 4 by system;
(4) close water inlet pipe isolation valve 25, hand hole temporary interface drain valve 16 and high-order temporary interface air release 15;
(5) start ebullator 5, start heating water tank 4 when the current in the circulating reflux pipe 22 reach certain flow, electric heating water tank 4 heats the demineralized water in it;
The heating power scope of electric heating water tank 4 is 10kw～800kw, and the heating power of electric heating water tank 4 can be chosen 10kw, 100kw, 200kw, 300kw, 405kw, 500kw, 600kw, 700kw or 800kw.The range of lift of ebullator 5: 20m～100m; Can choose lift is the ebullator 5 of 20m, 40m, 60m, 80m or 100m.Current in the circulating reflux pipe 22 that records of Heating Cyclic flowmeter 10 reach 10m
3/ h～100m
3During/h, open heating water tank 4 interior electric heaters, heating water tank 4 interior demineralized waters are heated.For example, the current in the circulating reflux pipe 22 reach 10m
3/ h, 30m
3/ h, 55m
3/ h, 80m
3/ h or 100m
3During/h, open heating water tank 4 interior electric heaters.
(6) ebullator 5 is in the interior demineralized water steam injection generator secondary sides 1 through heating of heating water tank 4, and the demineralized water after the heating and steam generator secondary side 1 interior demineralized water flows back to heating water tank 4 and carries out circulating-heating after mixing;
Ebullator 5 with the interior demineralized water through heating of heating water tank 4 successively through radiator drain 9, circulating reflux pipe 22, the second circulating-heating flexible pipe 11, hand hole take over 14 temporarily, in the steam generator secondary side hand hole temporary interface 2 steam injection generator secondary sides 1.Heating water tank 4 interior outflows through the demineralized water in demineralized water and the steam generator secondary side 1 of heating after mixing, adapter the 13, first circulating-heating flexible pipe 7, return pipe 6 flow back to heating water tank 4 and carry out circulating-heating temporarily through a high position successively after being flowed out by the high-order interim access port 3 of steam generator.
In the circulating-heating process, can be interrupted and open water tank air release 18 to discharge the gas that discharges in the demineralized water.After becoming liquid, the gas cooled that water tank air release 18 is discharged discharges through funnel 19, the hydrophobic isolation valve 20 of funnel, System drainage interface 21 successively.
(7) when steam generator secondary side 1 case temperature reaches the temperature range of regulation, heating water tank 4 stopped heatings.
When steam generator secondary side 1 housing is heated to 30 ℃～70 ℃ of the temperature ranges of regulation, close the electric heater in the heating water tank 4, close ebullator 5, close the first high pressure isolation valve 12 and the second high pressure isolation valve 8, the secondary pre-service hydraulic pressure test of steam generator rapid heating condition finishes.For example, when steam generator secondary side 1 housing is heated 30 ℃, 40 ℃, 50 ℃, 60 ℃ or 70 ℃, close the electric heater in the heating water tank 4, close ebullator 5, close the first high pressure isolation valve 12 and the second high pressure isolation valve 8, the secondary pre-service hydraulic pressure test of steam generator rapid heating condition finishes.
The above has done detailed description to embodiments of the invention by reference to the accompanying drawings, but the present invention is not limited to above-described embodiment, in the ken that those of ordinary skills possess, can also make various variations under the prerequisite that does not break away from aim of the present invention.The content that is not described in detail in the instructions of the present invention all can adopt prior art, and such as electric heating water tank 4, ebullator 5, Heating Cyclic flowmeter 10 etc. all can be adopted the product of any model in the prior art.
Claims (2)
1. secondary pre-service hydraulic pressure test of steam generator method that is rapidly heated, it is characterized in that: it may further comprise the steps:
(1) high position is taken over (13) temporarily be communicated with high-order temporary interface (3), hand hole is taken over (14) temporarily and be connected with hand hole temporary interface (2);
(2) fill with the demineralized water of cooling in the steam generator secondary side (1);
(3) open water inlet pipe isolation valve (25), in demineralized water injection heating water tank (4);
(4) close water inlet pipe isolation valve (25), hand hole temporary interface drain valve (16) and high-order temporary interface air release (15);
(5) start ebullator (5), when the current in the circulating reflux pipe (22) reach certain flow, start heating water tank (4), the demineralized water in it is heated;
(6) ebullator (5) will heating water tank (4) in the demineralized water steam injection generator secondary side (1) through heating, the interior demineralized water of the demineralized water after the heating and steam generator secondary side (1) flows back to heating water tank (4) and carries out circulating-heating after mixing;
(7) when steam generator secondary side (1) case temperature reaches the temperature range of regulation, heating water tank (4) stopped heating.
2. a kind of secondary pre-service hydraulic pressure test of steam generator according to claim 1 method that is rapidly heated, it is characterized in that: in the circulating-heating process of described step (6), be interrupted and open water tank air release (18) to discharge the gas that discharges in the demineralized water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010130479 CN102192819B (en) | 2010-03-11 | 2010-03-11 | Quick heating process for pre-service hydrostatic test of secondary side of steam generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010130479 CN102192819B (en) | 2010-03-11 | 2010-03-11 | Quick heating process for pre-service hydrostatic test of secondary side of steam generator |
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| Publication Number | Publication Date |
|---|---|
| CN102192819A CN102192819A (en) | 2011-09-21 |
| CN102192819B true CN102192819B (en) | 2013-03-20 |
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| CN 201010130479 Active CN102192819B (en) | 2010-03-11 | 2010-03-11 | Quick heating process for pre-service hydrostatic test of secondary side of steam generator |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107219126B (en) * | 2017-06-02 | 2024-03-22 | 上海森永工程设备股份有限公司 | Pressure vessel hydrostatic test device and method |
| CN108278586A (en) * | 2018-03-14 | 2018-07-13 | 西安热工研究院有限公司 | A kind of system and method for HTGR Nuclear Power Plant primary Ioops heating and dehumidification |
| CN109799142B (en) * | 2018-12-20 | 2021-11-09 | 中广核核电运营有限公司 | Circulating heating system and circulating heating method for nuclear power station hydrostatic test |
| CN111351021A (en) * | 2018-12-21 | 2020-06-30 | 核动力运行研究所 | Method for preheating tube plate of steam generator secondary side hydrostatic test |
| CN110579405B (en) * | 2019-08-29 | 2022-05-06 | 中广核核电运营有限公司 | Auxiliary water supply system of nuclear power station and heating method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1052417A (en) * | 1963-03-25 | |||
| DE2511237B2 (en) * | 1974-03-18 | 1978-01-12 | STEAM GENERATOR PLANT WITH A NUCLEAR REACTOR | |
| CN85106902A (en) * | 1985-09-13 | 1987-03-11 | 西屋电气公司 | Has the model steam generator of being convenient to check the sample pipeline |
| JP2011147880A (en) * | 2010-01-21 | 2011-08-04 | Nomura Micro Sci Co Ltd | Method and apparatus for production of purified water for medicine |
-
2010
- 2010-03-11 CN CN 201010130479 patent/CN102192819B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1052417A (en) * | 1963-03-25 | |||
| DE2511237B2 (en) * | 1974-03-18 | 1978-01-12 | STEAM GENERATOR PLANT WITH A NUCLEAR REACTOR | |
| CN85106902A (en) * | 1985-09-13 | 1987-03-11 | 西屋电气公司 | Has the model steam generator of being convenient to check the sample pipeline |
| JP2011147880A (en) * | 2010-01-21 | 2011-08-04 | Nomura Micro Sci Co Ltd | Method and apparatus for production of purified water for medicine |
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| CN102192819A (en) | 2011-09-21 |
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