CN205900113U - A collecting system for collecting nuclear power station main pump low pressure bearing seal leakage water - Google Patents
A collecting system for collecting nuclear power station main pump low pressure bearing seal leakage water Download PDFInfo
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- CN205900113U CN205900113U CN201620572447.0U CN201620572447U CN205900113U CN 205900113 U CN205900113 U CN 205900113U CN 201620572447 U CN201620572447 U CN 201620572447U CN 205900113 U CN205900113 U CN 205900113U
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Abstract
The utility model relates to a collecting system for collecting nuclear power station main pump low pressure bearing seal leakage water, it is including establishing in the containment and the continuous leakage water collecting vat (2) of low pressure bearing seal leakage hole through leaking water gathering line (11) and main pump (1), leak water collecting vat (2) containment internal leakage water feed line (12) through linking to each other, the containment leaks and leaks that storage tank (6) link to each other in the middle of feed line (13) and the boron recovery system, be equipped with drainage pump (3) and containment interior isolating valve (4) on the containment internal leakage water feed line (12) in proper order, the containment leak feed line (13) be equipped with containment outer isolating valve (5). The utility model provides a collecting system, its simple structure, easily operation, safe and reliable can solve internal nuclear power unit main pump low pressure bearing seal leakage water and can't carry out multiplexing problem again, and furthest reduces the production volume of nuclear power station technology waste water.
Description
Technical field
This utility model belongs to the collection technique field of nuclear power station main pump sealing leak and in particular to being used for collecting nuclear power station
The collection system of main pump low pressure shaft seal water leakage.
Background technology
The domestic generation Ⅲ nuclear power unit with independent intellectual property right selects shaft seal pump in design as main pump.Main pump
Low pressure shaft seal water leakage due to air contact in containment and oxygen-containing and normal pressure, the white-out system of existing design cannot be by low pressure
Shaft sealing leakage water is delivered to boron recovery system of nuclear power plant after collecting and is multiplexed, and can only deliver to liquid waste treatment system of nuclear power plant after collecting
Processed as technique waste water, extra technique waste water can be produced, and supervised to environment as liquid effluent after treatment
Survey discharge.
Utility model content
For defect present in prior art, the purpose of this utility model is to provide one kind to be used for collecting nuclear power station main pump
The collection system of low pressure shaft seal water leakage, this collection system structure is simply it is easy to operation, safe and reliable, can drop to greatest extent
The yield of low nuclear power plant technique waste water.
For reaching object above, the technical solution adopted in the utility model is: for collecting nuclear power station main pump low pressure shaft seal
The collection system of water leakage, including the low pressure shaft seal leakage hole phase being located in containment and by water leakage gathering line and main pump
Leakage water collecting groove even, described leakage water collecting groove is connected with boron recovery system hold-up vessel by water leakage feed-line,
Water leakage feed-line includes containment internal leakage water feed-line and the containment external leakage being connected with leakage water collecting groove
Water feed-line, containment internal leakage water feed-line and containment leak leak feed-line by being arranged on containment
Through-connections are connected, and containment internal leakage water feed-line is sequentially provided with isolating valve in drainage pump and containment, containment
The leak feed-line that leaks is provided with the outer isolating valve of containment.
Further, the low pressure shaft seal leakage hole of main pump and the difference in height of the water inlet of leakage water collecting groove are more than water leakage receipts
The 5 ‰ of the length of manifold line.
Further, containment leaks and is connected with water leakage sampling line, on water leakage sampling line on leak feed-line
It is provided with sampling valve.
Further, the containment downstream of the junction of water leakage sampling line on leak feed-line of leaking is provided with boron and returns
Receipts system hold-up vessel pipeline isolating valve, the upstream of boron recovery system hold-up vessel pipeline isolating valve is connected with process drain pipe
Line.
Further, process drain pipeline is connected with liquid waste treatment system process drain dashpot；On process drain pipeline
It is provided with process drain pipeline isolating valve.
A kind of collection system for collecting nuclear power station main pump low pressure shaft seal water leakage that this utility model provides, its structure
Simply it is easy to operation, special collection can be carried out to the low pressure shaft seal water leakage of main pump, further according to sampling result, determine low
Whether last item envelope water leakage is multiplexed or discharges, and reduces the yield of technique waste water to greatest extent, reduces liquid effluent discharge
The impact that environment is caused；Water leakage feed-line be provided with the outer isolating valve of isolating valve and containment in containment it can be ensured that
Containment isolation features under accident conditions, safe and reliable.
Brief description
Fig. 1 is a kind of collection system for collecting nuclear power station main pump low pressure shaft seal water leakage that this utility model provides
Structural representation.
Specific embodiment
With reference to the accompanying drawings and detailed description this utility model is further described.
Generally, the containment shell 17 of nuclear power station is externally provided with boron recovery system hold-up vessel 6 and liquid waste treatment system technique
Draining dashpot 7 (see Fig. 1).The situation of shaft seal pump selected by main pump 1 for Nuclear Power Station group of motors, and this utility model provides
A kind of collection system for collecting nuclear power station main pump low pressure shaft seal water leakage.
As shown in figure 1, a kind of collection for collecting nuclear power station main pump low pressure shaft seal water leakage that this utility model provides
System is included being located in containment and is leaked by the low pressure shaft seal of water leakage gathering line 11 (node n01 to n02) and main pump 1
The leakage water collecting groove 2 that mouth is connected, described leakage water collecting groove 2 is returned with boron by water leakage feed-line (node n03 to n04)
Receipts system hold-up vessel 6 is connected, and water leakage feed-line (node n03 to n04) includes the safety being connected with leakage water collecting groove 2
Shell internal leakage water feed-line 12 (node n03 to n08) and containment leak leak feed-line 13 (node n08 to n04),
Containment internal leakage water feed-line 12 and containment leak leak feed-line 13 by being arranged on running through even on containment
Fitting 16 is connected, and containment internal leakage water feed-line 12 is sequentially provided with isolating valve 4, containment in drainage pump 3 and containment
The leak feed-line 13 that leaks is provided with the outer isolating valve 5 of containment.
Because water leakage feed-line needs to run through containment, therefore in this utility model, water leakage feed-line sets
It is equipped with the outer isolating valve 5 of isolating valve 4 and containment in containment it is ensured that containment isolation features under accident conditions.
Because main pump low pressure shaft seal water leakage is normal pressure, need to arrange to low pressure shaft seal leakage collecting tank by pipe gravity flow pipeline,
Therefore, in of the present utility model, the low pressure shaft seal leakage hole of main pump 1 is more than with the difference in height of the water inlet of leakage water collecting groove 2
The 5 ‰ of the length of water leakage gathering line 11, can be flow automatically with the low pressure shaft seal water leakage guaranteeing main pump and enter water leakage collection
Groove 2.
In this utility model, containment leaks and is connected with isolating valve 5 downstream outer positioned at containment on leak feed-line 12
Water leakage sampling line 14 (node n06 to n07), water leakage sampling line 14 is provided with sampling valve 10；Containment leaks
On leak feed-line 12, the downstream of the junction of water leakage sampling line 14 is provided with the isolation of boron recovery system hold-up vessel pipeline
Valve 8；The upstream of boron recovery system hold-up vessel pipeline isolating valve 8 is connected with process drain pipeline 15 (node n09 to n05).
Further, process drain pipeline 15 is connected with liquid waste treatment system process drain dashpot 7；Process drain pipeline
15 are provided with process drain pipeline isolating valve 9.
Using said structure, it is to determine whether low pressure shaft seal water leakage is multiplexed or discharges, when sampling result meets boron
During the multiplex requirements of recovery system, close process drain pipeline isolating valve 9, open boron recovery system hold-up vessel pipeline isolating valve
8, low pressure shaft seal water leakage is arranged to boron recovery system hold-up vessel 6, waits multiplexing；When sampling result is unsatisfactory for boron recovery system
Multiplex requirements when, close boron recovery system hold-up vessel pipeline isolating valve 8, open process drain pipeline isolating valve 9, by low pressure
Shaft sealing leakage water is arranged to liquid waste treatment system process drain dashpot 7, waits pending.
Structure described in the utility model is not limited to the embodiment described in specific embodiment, those skilled in the art's root
Draw other embodiments according to the technical solution of the utility model, also belong to technological innovation scope of the present utility model.
Claims (5)
1. it is used for collecting the collection system of nuclear power station main pump low pressure shaft seal water leakage, wherein, the main pump (1) of nuclear power station is to be located at peace
Shaft seal pump in full shell, containment is externally provided with boron recovery system hold-up vessel (6) and liquid waste treatment system process drain dashpot
(7) it is characterised in that described collection system includes being located in containment and by water leakage gathering line (11) and main pump (1)
Low pressure shaft seal leakage hole be connected leakage water collecting groove (2), described leakage water collecting groove (2) pass through water leakage feed-line with
Boron recovery system hold-up vessel (6) is connected, and water leakage feed-line includes letting out with leaking in the containment that water collecting groove (2) is connected
Leak feed-line (12) and containment leak leak feed-line (13), containment internal leakage water feed-line (12) and peace
The full shell leak feed-line (13) that leaks is connected by the through-connections (16) being arranged on containment, containment internal leakage water
Isolating valve (4) in drainage pump (3) and containment is sequentially provided with feed-line (12), containment leaks leak feed-line (13)
It is provided with the outer isolating valve (5) of containment.
2. collection system according to claim 1 is it is characterised in that the low pressure shaft seal leakage hole of main pump (1) and water leakage
The difference in height of the water inlet of collecting tank (2) is more than the 5 ‰ of the length of water leakage gathering line (11).
3. on collection system according to claim 1 and 2 leak feed-line (12) it is characterised in that containment leaks
It is connected with water leakage sampling line (14), water leakage sampling line (14) is provided with sampling valve (10).
4. collection system according to claim 3 upper leakage of leak feed-line (12) it is characterised in that containment leaks
The downstream of the junction of water sampling pipeline (14) is provided with boron recovery system hold-up vessel pipeline isolating valve (8), in boron recovery system
Between the upstream of storage tank pipeline isolating valve (8) be connected with process drain pipeline (15).
5. collection system according to claim 4 is it is characterised in that process drain pipeline (15) and liquid waste treatment system work
Skill draining dashpot (7) is connected；Process drain pipeline (15) is provided with process drain pipeline isolating valve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620572447.0U CN205900113U (en) | 2016-06-14 | 2016-06-14 | A collecting system for collecting nuclear power station main pump low pressure bearing seal leakage water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620572447.0U CN205900113U (en) | 2016-06-14 | 2016-06-14 | A collecting system for collecting nuclear power station main pump low pressure bearing seal leakage water |
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| CN205900113U true CN205900113U (en) | 2017-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620572447.0U Active CN205900113U (en) | 2016-06-14 | 2016-06-14 | A collecting system for collecting nuclear power station main pump low pressure bearing seal leakage water |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110491532A (en) * | 2019-07-25 | 2019-11-22 | 岭澳核电有限公司 | Nuclear power station main pump abnormal leakage processing system and method |
| CN110689975A (en) * | 2019-09-26 | 2020-01-14 | 岭澳核电有限公司 | Nuclear power station nuclear island exhaust drainage system and leakage detection method |
| CN111161898A (en) * | 2019-12-11 | 2020-05-15 | 岭澳核电有限公司 | Nuclear island exhaust and water delivery pipe network system for million-kilowatt nuclear power station |
-
2016
- 2016-06-14 CN CN201620572447.0U patent/CN205900113U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110491532A (en) * | 2019-07-25 | 2019-11-22 | 岭澳核电有限公司 | Nuclear power station main pump abnormal leakage processing system and method |
| CN110491532B (en) * | 2019-07-25 | 2021-07-06 | 岭澳核电有限公司 | Nuclear power station main pump leakage abnormity processing system and method |
| CN110689975A (en) * | 2019-09-26 | 2020-01-14 | 岭澳核电有限公司 | Nuclear power station nuclear island exhaust drainage system and leakage detection method |
| CN110689975B (en) * | 2019-09-26 | 2021-08-24 | 岭澳核电有限公司 | Nuclear power station nuclear island exhaust drainage system and leakage detection method |
| CN111161898A (en) * | 2019-12-11 | 2020-05-15 | 岭澳核电有限公司 | Nuclear island exhaust and water delivery pipe network system for million-kilowatt nuclear power station |
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