CN203338767U - Water hammer prevention structure of pressure stabilizer safety valve downstream pipeline of nuclear power plant - Google Patents
Water hammer prevention structure of pressure stabilizer safety valve downstream pipeline of nuclear power plant Download PDFInfo
- Publication number
- CN203338767U CN203338767U CN2013204618131U CN201320461813U CN203338767U CN 203338767 U CN203338767 U CN 203338767U CN 2013204618131 U CN2013204618131 U CN 2013204618131U CN 201320461813 U CN201320461813 U CN 201320461813U CN 203338767 U CN203338767 U CN 203338767U
- Authority
- CN
- China
- Prior art keywords
- safety valve
- water hammer
- power plant
- nuclear power
- pressure stabilizer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The utility model discloses a water hammer prevention structure of a pressure stabilizer safety valve downstream pipeline of a nuclear power plant. The water hammer prevention structure of the pressure stabilizer safety valve downstream pipeline of the nuclear power plant comprises a connecting pipeline arranged between a top air space of a pressure stabilizer pressure relief tank and a downstream exhaust pipeline of a pressure stabilizer safety valve. Due to the connecting pipeline additionally arranged between the top air space of the pressure stabilizer pressure relief tank and the downstream exhaust pipeline of the pressure stabilizer safety valve, the water hammer prevention structure of the pressure stabilizer safety valve downstream pipeline of the nuclear power plant effectively prevents the pressure stabilizer safety valve and the downstream exhaust pipeline of the pressure stabilizer safety valve from generating water hammers.
Description
Technical field
The utility model relates to the design of nuclear power plant voltage stabilizer safety valve downstream line, and more particularly, the utility model relates to a kind of water hammer-resistant structure of nuclear power plant voltage stabilizer safety valve downstream line.
Background technology
The radioactive fluid of revealing in order to collect pressurizer safety valve, minimizing maintenance personal's irradiated dosage, at present a lot of nuclear power stations all are provided with pressurizer relief tank in the downstream of pressurizer safety valve bleeder line.The bottom of pressurizer relief tank is hydrospace, and top is headroom.
While in each refulling cycle, carrying out the safety valve performance test, safety valve is discharged high-temperature steam after opening, and high-temperature steam imports in the hydrospace of pressurizer relief tank body bottom by bleeder line, and then is absorbed by the hydrospace of pressurizer relief tank.Pressurizer relief tank is after absorbing high-temperature steam, all can heat up in its hydrospace and headroom, and the pressure in pressurizer relief tank increases.Afterwards, along with closing of pressurizer safety valve, the high-temperature steam of retaining in bleeder line can be relaxed water at low temperature condensation in case and pressure decreased; Now, because the pressure ratio in the release case is higher, the water in pressurizer relief tank will, under the driving of both sides pressure reduction, accelerate the upstream flow to bleeder line.When fluid flow to the bend pipe of bleeder line and pressurizer safety valve, will produce water hammer, this water hammer can affect to the integrality of bleeder line; If water hammer is created on the valve body of pressurizer safety valve, even can all cause certain influence to the valve reliability of operation.
In view of this, the necessary water hammer-resistant structure that a kind of nuclear power plant voltage stabilizer safety valve downstream line is provided.
The utility model content
The purpose of this utility model is: a kind of water hammer-resistant structure of nuclear power plant voltage stabilizer safety valve downstream line is provided, to avoid pressurizer safety valve downstream line and pressurizer safety valve itself, produces water hammer, improve the reliability of system.
In order to realize the foregoing invention purpose, the utility model provides a kind of water hammer-resistant structure of nuclear power plant voltage stabilizer safety valve downstream line, and it comprises the associated line be arranged between headroom, pressurizer relief tank top and pressurizer safety valve downstream drain pipeline.
A kind of improvement as the water hammer-resistant structure of the utility model nuclear power plant voltage stabilizer safety valve downstream line, be provided with reverse checkvalve on described associated line.
As a kind of improvement of the water hammer-resistant structure of the utility model nuclear power plant voltage stabilizer safety valve downstream line, the direction of described reverse checkvalve is not allow the fluid in bleeder line to enter in the headroom of pressurizer relief tank.
As a kind of improvement of the water hammer-resistant structure of the utility model nuclear power plant voltage stabilizer safety valve downstream line, the gas in headroom, described pressurizer relief tank top is non-condensable gas.
Compared with prior art, the water hammer-resistant structure of the utility model nuclear power plant voltage stabilizer safety valve downstream line, by between headroom, pressurizer relief tank top and pressurizer safety valve downstream drain pipeline, setting up associated line, has effectively been avoided producing water hammer on pressurizer safety valve itself and downstream drain pipeline thereof.
The accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, water hammer-resistant structure and the beneficial effect thereof of the utility model nuclear power plant voltage stabilizer safety valve downstream line is elaborated, wherein:
The schematic diagram of the water hammer-resistant structure that Fig. 1 is the utility model nuclear power plant voltage stabilizer safety valve downstream line.
Embodiment
In order to make goal of the invention of the present utility model, technical scheme and useful technique effect thereof more clear, below in conjunction with the drawings and specific embodiments, the utility model is further elaborated.Should be understood that, the embodiment of describing in this instructions is only in order to explain the utility model, not in order to limit the utility model.
Refer to shown in Fig. 1, the water hammer-resistant structure of the utility model nuclear power plant voltage stabilizer safety valve downstream line is 12 places, headroom at pressurizer relief tank 10 tops, and set up an associated line 30 between the bleeder line 22 in pressurizer safety valve 20 downstreams, and a reverse checkvalve 32 is set on associated line 30.The direction of reverse checkvalve 32 is not allow the fluid in bleeder line 22 to enter in the headroom 12 of pressurizer relief tank 10; But when the pressure in the headroom 12 of pressurizer relief tank 10 is greater than the pressure in bleeder line 22, reverse checkvalve 32 is opened, and allows the non-condensable gas in pressurizer relief tank 10 to enter in bleeder line 22.
When the safety valve 20 of voltage stabilizer 40 is opened, the pressure in safety valve 20 downstream drain pipelines 22 is higher than the pressure in pressurizer relief tank 10, and reverse checkvalve 32 is closed.High-temperature steam in pressurizer safety valve 20 downstream drain pipelines 22 enters the hydrospace 14 of pressurizer relief tank 10 bottoms, and high-temperature steam is by water condensation.Therefore 14Ji headroom, hydrospace 12 in pressurizer relief tank 10 is also heated by high-temperature steam, and then pressure raises.Now, due to closing of reverse checkvalve 32, high-temperature steam can't enter in the headroom 12 of pressurizer relief tank 10 by associated line 30, has also just avoided high-temperature steam directly to heat headroom 12, thereby can prevent that the pressure in release case 10 from raising excessive.
After pressurizer safety valve 20 is closed, the high-temperature steam of retaining in bleeder line 22 is by the water at low temperature condensation in pressurizer relief tank 10 and pressure reduces gradually, and the pressure in pressurizer relief tank 10 is higher, and bleeder line 22 produces the suck-back phenomenon; Simultaneously, the non-condensable gas in the headroom 12 of release case 10 is opened reverse checkvalve 32, enters into the bleeder line 22 in pressurizer safety valve 20 downstreams, and the pressure in bleeder line 22 is raise rapidly.Now, bleeder line 22 reduces with the pressure reduction in release case 10, and the acceleration of suck-back water reduces, and the pressure in pressurizer relief tank 10 is when pressure in bleeder line 22 equates, suck-back water is to the acceleration vanishing of bleeder line 22 upstream flow.But the reason due to inertia, suck-back water continues upwards to flow along bleeder line 22, non-condensable gas in bleeder line 22 is compressed, pressure raises, this pressure can be higher than the pressure in the headroom 12 of pressurizer relief tank 10, therefore to pressurizer safety valve 20 directions, mobile speed can reduce water, and reverse checkvalve 32 also can be closed automatically.
After the flowing velocity of bleeder line 22 interior water reduces, the impact caused in pressurizer safety valve 20 downstream drain pipeline 22 pipe bent position also can diminish, and has therefore avoided the generation of water hammer; Simultaneously, the non-condensable gas of bleeder line 22 interior existence has higher compressibility, and it will make water can directly not impact on pressurizer safety valve 20, thereby avoid producing water hammer on pressurizer safety valve 20.
Known by above description, the utility model can effectively be avoided producing water hammer on pressurizer safety valve 20 itself and downstream drain pipeline 22 thereof.
The announcement of book and instruction according to the above description, the utility model those skilled in the art can also carry out suitable change and modification to above-mentioned embodiment.Therefore, the utility model is not limited to embodiment disclosed and described above, to modifications and changes more of the present utility model, also should fall in the protection domain of claim of the present utility model.In addition, although used some specific terms in this instructions, these terms just for convenience of description, do not form any restriction to the utility model.
Claims (4)
1. the water hammer-resistant structure of a nuclear power plant voltage stabilizer safety valve downstream line, is characterized in that: comprise the associated line be arranged between headroom, pressurizer relief tank top and pressurizer safety valve downstream drain pipeline.
2. the water hammer-resistant structure of nuclear power plant voltage stabilizer safety valve downstream line according to claim 1, is characterized in that: on described associated line, be provided with reverse checkvalve.
3. the water hammer-resistant structure of nuclear power plant voltage stabilizer safety valve downstream line according to claim 2, it is characterized in that: the direction of described reverse checkvalve does not allow the fluid in bleeder line to enter in the headroom of pressurizer relief tank.
4. according to the water hammer-resistant structure of the described nuclear power plant voltage stabilizer safety valve of any one in claims 1 to 3 downstream line, it is characterized in that: the gas in headroom, described pressurizer relief tank top is non-condensable gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204618131U CN203338767U (en) | 2013-07-30 | 2013-07-30 | Water hammer prevention structure of pressure stabilizer safety valve downstream pipeline of nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204618131U CN203338767U (en) | 2013-07-30 | 2013-07-30 | Water hammer prevention structure of pressure stabilizer safety valve downstream pipeline of nuclear power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203338767U true CN203338767U (en) | 2013-12-11 |
Family
ID=49707431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204618131U Expired - Lifetime CN203338767U (en) | 2013-07-30 | 2013-07-30 | Water hammer prevention structure of pressure stabilizer safety valve downstream pipeline of nuclear power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203338767U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110491528A (en) * | 2019-08-15 | 2019-11-22 | 中广核研究院有限公司 | A kind of sea nuclear power platform voltage-stablizer blowdown line arragement construction |
-
2013
- 2013-07-30 CN CN2013204618131U patent/CN203338767U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110491528A (en) * | 2019-08-15 | 2019-11-22 | 中广核研究院有限公司 | A kind of sea nuclear power platform voltage-stablizer blowdown line arragement construction |
| CN110491528B (en) * | 2019-08-15 | 2020-11-13 | 中广核研究院有限公司 | Pressure relief pipeline arrangement structure of voltage stabilizer of offshore nuclear power platform |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2013251667B2 (en) | Hydropower and geothermal energy system and methods | |
| CN103390435B (en) | The exhaust apparatus of nuclear power plant reactor coolant system pressure vessel and method | |
| CN207316160U (en) | A kind of municipal aqueduct for protecting water hammer effect | |
| CN203338767U (en) | Water hammer prevention structure of pressure stabilizer safety valve downstream pipeline of nuclear power plant | |
| CN204388450U (en) | For the chilled water system of the buried construction of Diversion Tunnels cooling of High-geotemperature | |
| CN108979942A (en) | A kind of compound movement fluid energy absorber and its water generator | |
| CN203338769U (en) | Protective device for nuclear power plant reactor coolant system | |
| MY184252A (en) | Fast neutron reactor and neutron reflector block of a fast neutron reactor | |
| CN204007198U (en) | A kind of water-jet exhaust device for condenser | |
| CN204126853U (en) | Residual heat of air compressor reclaims unit waterway structure | |
| CN103061959A (en) | Double-channel ocean current energy power generating device | |
| CN202484594U (en) | Precooling device for liquid-nitrogen transmission branch line | |
| CN201650384U (en) | Minitype turbine thermodynamic system | |
| CN204692671U (en) | Industrial refrigeration right-angle type safety check | |
| CN204164665U (en) | The special bleeding device of a kind of pressure regulating cabinet | |
| CN204609954U (en) | Steam turbine vacuum seal arrangement | |
| CN203384343U (en) | Exhaust air duct at exhaust opening of large-scale planet-gear reducer for mill | |
| CN204253127U (en) | A kind of overcritical internal combustion direct-flow steam cluster engine lubricant oil heat exchanger | |
| CN202187961U (en) | Device for improving output of vacuum pump to reduce cavitation for nuclear power station | |
| CN203731375U (en) | Thermal power plant low-pressure heater cascade drain device with jet pumps | |
| CN203451545U (en) | Automatic protection device of blast furnace top pressure gas | |
| CN202852933U (en) | Double-layer windproof sheet structure of range hood | |
| CN202853151U (en) | Vacuum-tube solar water heater | |
| CN201202109Y (en) | Water autorotation type hydropower station | |
| CN203214980U (en) | Open system check valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131211 |
|
| CX01 | Expiry of patent term |