CN203026154U - Pressure relieving device applied to pressurizer relief tank of pressurized water reactor nuclear power plant - Google Patents
Pressure relieving device applied to pressurizer relief tank of pressurized water reactor nuclear power plant Download PDFInfo
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- CN203026154U CN203026154U CN2012206900128U CN201220690012U CN203026154U CN 203026154 U CN203026154 U CN 203026154U CN 2012206900128 U CN2012206900128 U CN 2012206900128U CN 201220690012 U CN201220690012 U CN 201220690012U CN 203026154 U CN203026154 U CN 203026154U
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- layer sleeve
- perforate
- pipe
- outer layer
- quadrant
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- 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
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Abstract
The utility model relates to a pressure relieving device applied to a pressurizer relief tank of a pressurized water reactor nuclear power plant. The pressure relieving device is arranged in the sealed tank shaped relief tank and composed of a spray main pipe and a pressure relieving pipe, wherein the pressure relieving pipe is fixed in the relief tank; the relieving pipe is of a coaxial double-sleeve structure and is composed of an inner sleeve and an outer sleeve; one end of the main pipe is communicated with the axial center of the inner sleeve and sealed with the outer sleeve; the axis of the main pipe is perpendicular with the axis of the pressure relieving pipe; the other end of the main pipe extends outside the relief tank and finally is connected with the top of a pressurizer; and holes are formed in the walls of the inner sleeve and the outer sleeve. The spraying speed and uniformity of the steam are improved by the pressure relieving pipe; the steam and water mixing efficiency can be improved by the double-sleeve structure; and the different hole forming ways inside and outside the double-sleeve structures can furthermore promote the steam to completely mix with the water.
Description
Technical field
The present invention relates to nuclear power station engineered safety system field, be specifically related to a kind of pressure relief device that is applied to the pressurized-water reactor nuclear power plant pressurizer relief tank.
Background technology
The major function of nuclear power plant voltage stabilizer release case is to collect and high temperature and high pressure steam that condensing cooling enters from pressurizer safety valve or relief valve; What in addition, the release case collected also that other security systems are discharged from the power station is hydrophobic.
It is inner that release case relief tube is arranged on the release case, is used for making the steam from pressurizer safety valve or relief valve discharging to spray into equably cold water, with reach with the release case in water directly mix, the purpose of condensing cooling.The quality of its performance directly has influence on steam and unloads the speed of putting, steam and spray into homogeneity, release the temperature inside the box and pressure in the release case and the normal operation of related system.
At present relief tube commonly used is L shaped bend pipe, and the straight section both sides that this pipe is soaked in water have some equal diameter apertures, by these apertures, the steam from pressurizer safety valve or relief valve discharging are sprayed in cold water.This design exists that steam ejection is inhomogeneous, steam and the problem such as the water mixing efficiency is not high.
Summary of the invention
The technical matters that will solve of the present invention is to provide a kind of interior pressure relief device of pressurized-water reactor nuclear power plant release case that can improve steam spouting velocity, ejection homogeneity and mixing efficiency.
In order to solve the problems of the technologies described above, technical scheme of the present invention is, a kind of pressure relief device that is applied to the pressurized-water reactor nuclear power plant pressurizer relief tank, and it is arranged in sealable tank shape release case, comprises a female pipe, a relief tube; Described relief tube is by being fixed in the release case;
Described relief tube is the coaxial line double-layer sleeve structure, and it comprises inner layer sleeve and outer layer sleeve; Axial central connection of described female Guan Yiduan and described inner layer sleeve, and seal with described outer layer sleeve; Described female tubular axis line is vertical with the axis of described relief tube; The other end of described female pipe passes the top that the release case finally is connected to voltage stabilizer; Be provided with perforate on described inner layer sleeve and outer layer sleeve tube wall.
Described female pipe external diameter is Φ
1Described inner layer sleeve external diameter is consistent with described female pipe; Described outer layer sleeve axial length is 7～20 Φ
1, external diameter is 1.1 ~ 2 Φ
1
Axial length with join domain described female pipe described inner layer sleeve is 1.5～2 Φ
1, described inner layer sleeve does not arrange perforate in this join domain, the pipeline section in the disconnected zone of described inner layer sleeve vertically evenly the interval be furnished with several the first perforate sequences; Each first perforate sequence comprises 6～12 along circumferential evenly spaced the first through hole of described inner layer sleeve.
The internal diameter of described the first through hole is Φ
2The centre distance of two perforates that the edge in described adjacent two the first perforate sequences is adjacent with inner layer sleeve axis parallel direction is 2～5 Φ
2
Described outer layer sleeve comprises by cutting apart perpendicular to described female tubular axis line and the first plane of comprising described outer layer sleeve axis pipe upper area and the pipe lower area that forms.
The second plane and described the first plane that comprise described female tubular axis line and described outer layer sleeve axis are divided into first quartile and the second quadrant with described pipe upper area, and described pipe lower area is divided into third quadrant and fourth quadrant.
Described pipe upper area even interval vertically is furnished with several the second perforate sequences; Each second perforate sequence comprises along circumferential spaced apart 4～6 the second through holes of described outer layer sleeve, in first quartile, the second quadrant, arrange along circumferentially even interval respectively by described the second through hole that is assigned in first quartile, the second quadrant by the quantity uniform distribution for described 4～6 the second through holes.
The internal diameter of described the second through hole is Φ
3The centre distance of two perforates that the edge in described adjacent two the second perforate sequences is adjacent with outer layer sleeve axis parallel direction is 2～5 Φ
3
Described pipe lower area interval vertically is furnished with several the 3rd perforate sequences; Each the 3rd perforate sequence comprises along circumferential spaced apart 6～10 third through-holes of described outer layer sleeve, in third quadrant, fourth quadrant, arrange along circumferentially even interval respectively by the described third through-hole that is assigned in third quadrant, fourth quadrant by the quantity uniform distribution for described 6～10 third through-holes.
The internal diameter of described third through-hole is Φ
4The centre distance of two perforates that the edge in described adjacent two the 3rd perforate sequences is adjacent with outer layer sleeve axis parallel direction is 2～5 Φ
4
Beneficial effect of the present invention:
(1) relief tube of the present invention can improve steam spouting velocity and homogeneity;
(2) double-layer sleeve structure provided by the invention can improve the mixing efficiency of steam and water;
(3) the inside and outside different perforate mode of bilayer sleeve provided by the invention can further promote fully mixing of steam and water.
Description of drawings
Fig. 1 is the schematic diagram of a loop of reactor-loop;
Fig. 2 is the connection diagram of reactor voltage stabilizer and release case thereof;
Fig. 3 is the schematic diagram of release case and inner relief tube thereof;
Fig. 4 is a kind of pressure relief device schematic diagram that is applied to the pressurized-water reactor nuclear power plant pressurizer relief tank of the present invention;
Fig. 5 be in Fig. 4 A-A to sectional view.
In figure: 1-voltage stabilizer, 101-surge pipe, 2-release case, 3-spray equipment, the 4-pressure relief device, the female pipe of 401-, 402 relief tubes, 403-inner layer sleeve, the 404-outer layer sleeve, 405-the first through hole, 406-the second through hole, 407-third through-hole, the 5-loop, 6-pump, 7-pressure vessel, 8-reactor core, the 9-steam generator, 10-bottom support bracket, 11-first quartile, 12-the second quadrant, 13-third quadrant, 14-fourth quadrant.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described further.
Nuclear power plant reactor comprises a circuit system, and a described circuit system comprises a plurality of loops 5, expresses one of them loop 5 in Fig. 1; Each loop includes heat pipe section 502 and cold leg 501; Cooling medium enters pressure vessel 7 by pump 6 by cold leg 501 and from reactor core 8 draw heats, cooling medium after draw heat leaves pressure vessel 7 by heat pipe section 502 process steam generator 9 release heat, thereby the cooling medium after release heat is got back to cold leg 501 and then again entered pressure vessel 7 realization circulations.Voltage stabilizer 1 bottom is provided with surge pipe 101, and described surge pipe 101 is connected on described heat pipe section 502 by the fluctuation pipe.In Fig. 1, the top of described voltage stabilizer 1 is connected to by pipeline and is arranged on release case 2 inner bottom parts zones and is immersed on relief tube in water, and described relief tube is L shaped bend pipe of the prior art; In addition, described release case 2 inner top region divisions have spray equipment.
As extremely shown in Figure 6 in Fig. 2, a kind of pressure relief device that is applied to the pressurized-water reactor nuclear power plant pressurizer relief tank of the present invention, it is arranged in sealable tank shape release case 2, and it comprises 401, relief tubes 402 of a female pipe; Described relief tube 402 is by being fixed on the bottom support bracket 10 in release case 2; The axis of described relief tube 402 is parallel with the axis of described release case 2; Described female pipe 401 1 ends are connected to the axial middle position of described relief tube 402, and its axis is vertical with the axis of described relief tube 402; The other end of described female pipe 401 passes the top that release case 2 finally is connected to voltage stabilizer;
Described relief tube 402 is double-layer sleeve structure, comprises inner layer sleeve 403 and the outer layer sleeve 404 of coaxial line; The axial length of described inner layer sleeve 403 is less than or equal to the axial length of outer layer sleeve 404, and the axial two ends of inner layer sleeve 403 and outer layer sleeve 404 are all sealed; Described female pipe 401 is communicated with described inner layer sleeve 403, with described outer layer sleeve 404 sealings;
Described female pipe 401 external diameters are Φ 1, are specially 250～500mm; Described inner layer sleeve 403 external diameters are consistent with described female pipe 401; Outer layer sleeve 404 axial lengths are 7～20 Φ 1, and external diameter is 1.1 ~ 2 Φ 1;
Axial length with join domain described female pipe 401 described inner layer sleeve 403 is 1.5～2 Φ 1, the not perforate in this join domain of described inner layer sleeve 403, the pipeline section in the disconnected zone of described inner layer sleeve 403 vertically evenly the interval be furnished with several the first perforate sequences; Each first perforate sequence comprises 6～12 along circumferential evenly spaced the first through hole 405 of described inner layer sleeve 403; The internal diameter of described the first through hole 405 is Φ 2, is specially 20～60mm; The centre distance of two perforates that the edge in described adjacent two the first perforate sequences is adjacent with inner layer sleeve 403 axis parallel directions is 2～5 Φ 2;
Described outer layer sleeve 404 comprises by cutting apart perpendicular to described female pipe 401 axis and the first plane of comprising described outer layer sleeve 404 axis pipe upper area and the pipe lower area that forms; The second plane and described the first plane that comprise described female pipe 401 axis and described outer layer sleeve 404 axis are divided into first quartile and the second quadrant with described pipe upper area, and described pipe lower area is divided into third quadrant and fourth quadrant;
Described pipe upper area even interval vertically is furnished with several the second perforate sequences; Each second perforate sequence comprises along circumferential spaced apart 4～6 the second through holes 406 of described outer layer sleeve 404, in first quartile, the second quadrant, arrange along circumferentially even interval respectively by described the second through hole 406 that is assigned in first quartile, the second quadrant by the quantity uniform distribution for described 4～6 the second through holes 406; The internal diameter of described the second through hole 406 is Φ 3, is specially 6～15mm; The centre distance of two perforates that the edge in described adjacent two the second perforate sequences is adjacent with outer layer sleeve 404 axis parallel directions is 2～5 Φ 3;
Described pipe lower area interval vertically is furnished with several the 3rd perforate sequences; Each the 3rd perforate sequence comprises along circumferential spaced apart 6～10 third through-holes 407 of described outer layer sleeve 404, in third quadrant, fourth quadrant, arrange along circumferentially even interval respectively by the described third through-hole 407 that is assigned in third quadrant, fourth quadrant by the quantity uniform distribution for described 6～10 third through-holes 407; The internal diameter of described third through-hole 407 is Φ 4, is specially 10～20mm; The centre distance of two perforates that the edge in described adjacent two the 3rd perforate sequences is adjacent with outer layer sleeve 404 axis parallel directions is 2～5 Φ 4.
Pressure relief device of the present invention can improve steam spouting velocity, ejection homogeneity and the mixing efficiency in pressurized-water reactor nuclear power plant release case.
Claims (10)
1. pressure relief device that is applied to the pressurized-water reactor nuclear power plant pressurizer relief tank, it is arranged in sealable tank shape release case, it is characterized in that: comprise a female pipe, a relief tube; Described relief tube is by being fixed in the release case;
Described relief tube is the coaxial line double-layer sleeve structure, and it comprises inner layer sleeve and outer layer sleeve; Axial central connection of described female Guan Yiduan and described inner layer sleeve, and seal with described outer layer sleeve; Described female tubular axis line is vertical with the axis of described relief tube; The other end of described female pipe passes the top that the release case finally is connected to voltage stabilizer; Be provided with perforate on described inner layer sleeve and outer layer sleeve tube wall.
2. according to pressure relief device claimed in claim 1, it is characterized in that: described female pipe external diameter is Φ
1Described inner layer sleeve external diameter is consistent with described female pipe; Described outer layer sleeve axial length is 7～20 Φ
1, external diameter is 1.1～2 Φ
1
3. according to pressure relief device claimed in claim 1, it is characterized in that: the axial length with join domain described female pipe described inner layer sleeve is 1.5～2 Φ
1, described inner layer sleeve does not arrange perforate in this join domain, the pipeline section in the disconnected zone of described inner layer sleeve vertically evenly the interval be furnished with several the first perforate sequences; Each first perforate sequence comprises 6～12 along circumferential evenly spaced the first through hole of described inner layer sleeve.
4. according to pressure relief device claimed in claim 3, it is characterized in that: the internal diameter of described the first through hole is Φ
2The centre distance of two perforates that the edge in described adjacent two the first perforate sequences is adjacent with inner layer sleeve axis parallel direction is 2～5 Φ
2
5. according to pressure relief device claimed in claim 1, it is characterized in that: described outer layer sleeve comprises by cutting apart perpendicular to described female tubular axis line and the first plane of comprising described outer layer sleeve axis pipe upper area and the pipe lower area that forms.
6. according to pressure relief device claimed in claim 5, it is characterized in that: the second plane and described the first plane that comprise described female tubular axis line and described outer layer sleeve axis are divided into first quartile and the second quadrant with described pipe upper area, and described pipe lower area is divided into third quadrant and fourth quadrant.
7. according to pressure relief device claimed in claim 6, it is characterized in that: described pipe upper area even interval vertically is furnished with several the second perforate sequences; Each second perforate sequence comprises along circumferential spaced apart 4～6 the second through holes of described outer layer sleeve, in first quartile, the second quadrant, arrange along circumferentially even interval respectively by described the second through hole that is assigned in first quartile, the second quadrant by the quantity uniform distribution for described 4～6 the second through holes.
8. according to pressure relief device claimed in claim 7, it is characterized in that: the internal diameter of described the second through hole is Φ
3The centre distance of two perforates that the edge in described adjacent two the second perforate sequences is adjacent with outer layer sleeve axis parallel direction is 2～5 Φ
3
9. according to pressure relief device claimed in claim 6, it is characterized in that: described pipe lower area interval vertically is furnished with several the 3rd perforate sequences; Each the 3rd perforate sequence comprises along circumferential spaced apart 6～10 third through-holes of described outer layer sleeve, in third quadrant, fourth quadrant, arrange along circumferentially even interval respectively by the described third through-hole that is assigned in third quadrant, fourth quadrant by the quantity uniform distribution for described 6～10 third through-holes.
10. according to pressure relief device claimed in claim 9, it is characterized in that: the internal diameter of described third through-hole is Φ
4The centre distance of two perforates that the edge in described adjacent two the 3rd perforate sequences is adjacent with outer layer sleeve axis parallel direction is 2～5 Φ
4
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206900128U CN203026154U (en) | 2012-12-14 | 2012-12-14 | Pressure relieving device applied to pressurizer relief tank of pressurized water reactor nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206900128U CN203026154U (en) | 2012-12-14 | 2012-12-14 | Pressure relieving device applied to pressurizer relief tank of pressurized water reactor nuclear power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203026154U true CN203026154U (en) | 2013-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206900128U Expired - Lifetime CN203026154U (en) | 2012-12-14 | 2012-12-14 | Pressure relieving device applied to pressurizer relief tank of pressurized water reactor nuclear power plant |
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| Country | Link |
|---|---|
| CN (1) | CN203026154U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103440884A (en) * | 2013-08-12 | 2013-12-11 | 中国核动力研究设计院 | Steam pressure stabilizing system placed inside RPV and application method thereof |
| CN103871490A (en) * | 2012-12-14 | 2014-06-18 | 中国核动力研究设计院 | Pressure-relief apparatus applied for pressurized water reactor nuclear power plant pressurizer pressure-relief box |
-
2012
- 2012-12-14 CN CN2012206900128U patent/CN203026154U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871490A (en) * | 2012-12-14 | 2014-06-18 | 中国核动力研究设计院 | Pressure-relief apparatus applied for pressurized water reactor nuclear power plant pressurizer pressure-relief box |
| CN103871490B (en) * | 2012-12-14 | 2017-09-08 | 中国核动力研究设计院 | A kind of pressure relief device applied to pressurized-water reactor nuclear power plant pressurizer relief tank |
| CN103440884A (en) * | 2013-08-12 | 2013-12-11 | 中国核动力研究设计院 | Steam pressure stabilizing system placed inside RPV and application method thereof |
| CN103440884B (en) * | 2013-08-12 | 2016-05-11 | 中国核动力研究设计院 | Be placed in the application process of the steam pressure stabilizer of reactor pressure vessel inside |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130626 |