CN109273103A - Nuclear power plant voltage stabilizer and its water seal arrangement - Google Patents
Nuclear power plant voltage stabilizer and its water seal arrangement Download PDFInfo
- Publication number
- CN109273103A CN109273103A CN201811381334.2A CN201811381334A CN109273103A CN 109273103 A CN109273103 A CN 109273103A CN 201811381334 A CN201811381334 A CN 201811381334A CN 109273103 A CN109273103 A CN 109273103A
- Authority
- CN
- China
- Prior art keywords
- safety valve
- nuclear power
- power plant
- water seal
- seal arrangement
- 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.)
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Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C1/00—Reactor types
- G21C1/04—Thermal reactors ; Epithermal reactors
- G21C1/06—Heterogeneous reactors, i.e. in which fuel and moderator are separated
- G21C1/08—Heterogeneous reactors, i.e. in which fuel and moderator are separated moderator being highly pressurised, e.g. boiling water reactor, integral super-heat reactor, pressurised water reactor
- G21C1/09—Pressure regulating arrangements, i.e. pressurisers
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D1/00—Details of nuclear power plant
- G21D1/02—Arrangements of auxiliary equipment
-
- 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
-
- 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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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Gasket Seals (AREA)
Abstract
The invention discloses a kind of nuclear power plant voltage stabilizer water seal arrangements, comprising: upper cover ontology, equipped with the inside surfacing layer and the insulating layer on the outside of voltage-stablizer being located on the inside of voltage-stablizer；The pressurizer safety valve adapter tube of extension is tilted upward through upper cover ontology, pressurizer safety valve adapter tube is equipped with safe end, and safe end is connect with the process pipe on pressurizer safety valve；And the catchment covers of pressurizer safety valve adapter tube lower section are set to, catchment covers are fixed on the overlay cladding of upper cover inner surface and tilt upward extension from overlay cladding；Wherein, catchment covers are equipped with straight bottom plate and the side plate around bottom edge, bottom plate, side plate and inside surfacing layer surround condensation water collection cavity jointly, condense the condensed water to be formed for collecting saturated vapor, and the top of bottom plate is located at the top of inside surfacing layer surface minimum point.
Description
Technical field
The invention belongs to technical field of nuclear power, it is more particularly related to a kind of nuclear power plant voltage stabilizer and its water seal
Device.
Background technique
Voltage-stablizer is the important pressure security equipment in nuclear power station, main function be primary Ioops main system is carried out pressure and
The regulation and control of volume, to guarantee the integrality on primary Ioops main system pressure boundary.
The increase of oxygen content can accelerate the chemical reaction rate of metal, in order to slow down primary Ioops water and impurities in water and gold
The chemical reaction rate of category needs to control the oxygen content in primary Ioops.When nuclear power unit operates normally, generally by being controlled to appearance
Hydrogen is filled in case, so that the hydrogen in primary Ioops in water reaches certain concentration, to inhibit water irradiation to generate oxygen, to slow down one
The water and impurities in water in circuit and the chemical reaction rate of metal.In order to avoid the hydrogen of primary Ioops is let out by pressurizer safety valve
Water seal need to be arranged to avoid hydrogen gas leakage in pressurizer safety valve in leakage.
Existing water seal arrangement uses U-tube cold water seal structure, and U-tube cold water seal structure is located at voltage-stablizer upper cover and peace
On the connected process pipe of full valve.During voltage-stablizer is started and run, the saturated vapor in voltage-stablizer is sealed in U-tube cold water
Condensation in structure, when condensation water level is higher than the minimum point of U-tube inner wall upper surface, water-stop, which is established, to be completed.Voltage-stablizer water seal
Device can effectively reduce the leakage of hydrogen in vapor phase space in voltage-stablizer.But U-tube cold water seal structure is located on voltage-stablizer
Outside end socket, internal condensation coolant-temperature gage is low, and after pressurizer safety valve is opened, the discharge pipe line in safety valve downstream will bear higher
Hydraulic load, while U-tube cold water seal structure will occupy more arrangement space.
Existing water seal arrangement also uses the hot water seal structure of hot built-in slot type ponding cover, and ponding cover is welded on voltage-stablizer
On the inside of upper cover safety valve connecting pipe.During voltage-stablizer is started and run, the saturated vapor in voltage-stablizer is cold in ponding cover
Solidifying, when condensation water level is higher than minimum point on the inside of safety valve connecting pipe, water-stop, which is established, to be completed.Voltage-stablizer water seal arrangement can be effective
Reduce the leakage of hydrogen in vapor phase space in voltage-stablizer.But ponding bell-type sealing structure for water is there are ponding cover water capacity is larger, it is complete
Holotype is at longer, the biggish defect of hydrogen leak risk the time required to water seal.
In view of this, it is really necessary to provide a kind of novel nuclear power plant voltage stabilizer and its water seal arrangement, to overcome above lack
It falls into.
Summary of the invention
It is an object of the invention to: it overcomes the deficiencies of existing technologies, a kind of nuclear power plant voltage stabilizer and its water seal arrangement is provided.
In order to achieve the above-mentioned object of the invention, the present invention provides a kind of nuclear power plant voltage stabilizer water seal arrangements comprising:
Upper cover ontology, equipped with the inside surfacing layer and the insulating layer on the outside of voltage-stablizer being located on the inside of voltage-stablizer；
The pressurizer safety valve adapter tube of extension is tilted upward through upper cover ontology, pressurizer safety valve adapter tube is equipped with safety
End, safe end are connect with the process pipe on pressurizer safety valve；And
The catchment covers of pressurizer safety valve adapter tube lower section are set to, catchment covers are fixed on the overlay cladding of upper cover inner surface
And extension is tilted upward from overlay cladding；
Wherein, catchment covers are equipped with straight bottom plate and the side plate around bottom edge, bottom plate, side plate and inside surfacing layer
Condensation water collection cavity is surrounded jointly, condenses the condensed water to be formed for collecting saturated vapor, and the top of bottom plate is positioned at interior
The top of surface overlaying layer surface minimum point.
As a kind of improvement of nuclear power plant voltage stabilizer water seal arrangement of the present invention, the insulating layer with a thickness of 280mm-
300mm。
As a kind of improvement of nuclear power plant voltage stabilizer water seal arrangement of the present invention, the safety valve process pipe and voltage-stablizer are pacified
Full valve adapter tube safe end is connected by butt weld.
As a kind of improvement of nuclear power plant voltage stabilizer water seal arrangement of the present invention, the pressurizer safety valve adapter tube and safe end
At least partly extend insulating layer.
As a kind of improvement of nuclear power plant voltage stabilizer water seal arrangement of the present invention, the safety valve process pipe, voltage-stablizer peace
Full valve adapter tube and at least shared 480mm of safe end extend insulating layer.
As a kind of improvement of nuclear power plant voltage stabilizer water seal arrangement of the present invention, the safety valve connecting pipe and safe end by pair
Welding seam connection, the pressurizer safety valve adapter tube are connected with upper cover ontology by butt weld.
As a kind of improvement of nuclear power plant voltage stabilizer water seal arrangement of the present invention, the catchment covers are by austenitic stainless steel entirety
It is stamped to form.
As a kind of improvement of nuclear power plant voltage stabilizer water seal arrangement of the present invention, the angle of the side plate both wings is 18-22 degree.
As a kind of improvement of nuclear power plant voltage stabilizer water seal arrangement of the present invention, the angle of the bottom plate and side plate is 95-101
Degree.
In addition, the present invention also provides a kind of nuclear power plant voltage stabilizers comprising nuclear power plant voltage stabilizer water seal arrangement of the present invention.
Compared with the existing technology, nuclear power plant voltage stabilizer water seal arrangement provided by the invention can quickly form water seal, avoid
The risk of hydrogen leak, structure is simple, easily manufactured.In addition, condensate temperature can control lower than pressure stabilizing in seal water system
In device in the range of 30 DEG C of saturated vapor temperature, the waterpower load that the discharge pipe line in safety valve downstream is born can be effectively relieved
Lotus saves the arrangement space outside voltage-stablizer.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, nuclear power plant voltage stabilizer of the present invention and its water seal arrangement are carried out specifically
It is bright, in which:
Fig. 1 is the structural schematic diagram of nuclear power plant voltage stabilizer water seal arrangement of the present invention.
Fig. 2 to 4 is the structural representation of catchment covers in nuclear power plant voltage stabilizer water seal arrangement of the present invention.
Fig. 5 A to 5C is the schematic diagram of nuclear power plant voltage stabilizer water seal arrangement water seal process of the present invention.
Specific embodiment
It is clear in order to be more clear goal of the invention of the invention, technical solution and advantageous effects, below in conjunction with attached
Figure and specific embodiment, the present invention will be described in further detail.It should be understood that described in this specification specific
Embodiment is not intended to limit the present invention just for the sake of explaining the present invention.
It please refers to shown in Fig. 1 to Fig. 5, the present invention provides a kind of nuclear power plant voltage stabilizer water seal arrangements comprising:
Upper cover ontology 50, equipped with the inside surfacing layer 40 and the heat preservation on the outside of voltage-stablizer being located on the inside of voltage-stablizer
Layer 60；
The pressurizer safety valve adapter tube 30 of extension is tilted upward through upper cover ontology 50, pressurizer safety valve adapter tube is equipped with
Safe end 20, safe end 20 are connect with the process pipe 10 on pressurizer safety valve；And
The catchment covers 70 of 30 lower section of pressurizer safety valve adapter tube are set to, catchment covers 70 are fixed in table in upper cover ontology 50
On the overlay cladding 40 in face, and extension is tilted upward from overlay cladding 40；
Wherein, catchment covers 70 are equipped with straight bottom plate 80 and the side plate 90 around 80 edge of bottom plate, bottom plate 80,90 and of side plate
Inside surfacing layer 40 surrounds condensation water collection cavity jointly, condenses the condensed water to be formed, and bottom for collecting saturated vapor
The top of plate 80 is located at the top of 40 surface minimum point of inside surfacing layer.
In an embodiment of the invention, pressurizer safety valve is not provided with keeping the temperature, and covers outside upper cover ontology 50
Insulating layer with a thickness of 280mm-300mm.Pressurizer safety valve adapter tube 30 and safe end 20 at least partly extend insulating layer 60,
For example, other than the heat-preserving range that pressurizer safety valve adapter tube 30 and safe end 20 have part to extend insulating layer 60.In order to control
Condensate temperature in saturated vapor condensing rate and seal water system, process pipe 10, the pressurizer safety valve adapter tube of safety valve
30 and safe end 20 share the range of 480mm long and extend other than the heat-preserving range of insulating layer 60.
In the shown embodiment, the safe end 20 of safety valve process pipe 10 and pressurizer safety valve adapter tube 30 passes through pair
Welding seam connection.
A preferred embodiment according to the present invention, pressurizer safety valve adapter tube 30 and safe end 20 pass through butt weld
Connection, pressurizer safety valve adapter tube 30 are connected with upper cover ontology 50 by butt weld.
With particular reference to shown in Fig. 2 to Fig. 4, in nuclear power plant voltage stabilizer water seal arrangement of the present invention, catchment covers 70 are by austenite
Stainless steel is integrally stamped to form, and is made by the way of whole punching press, to reduce the weld seam on catchment covers 70, reduces pressure stabilizing
The in-service period weld seam weak part of device.
Catchment covers 70 are welded on the overlay cladding 40 of 50 inner surface of upper cover ontology, are equipped with straight bottom plate 80 and are surrounded
The side plate 90 at 80 edge of bottom plate, bottom plate 80, side plate 90 and inside surfacing layer 40 surround condensation water collection cavity jointly, for receiving
Collection saturated vapor condenses the condensed water to be formed, and the top of bottom plate 80 is located at the upper of 40 surface minimum point of inside surfacing layer
Side.
Bottom plate 80 is slab construction, and 80 with a thickness of 20mm, and the section far from the one end for being welded in overlay cladding 40 is in height
It is located at the top of 40 surface minimum point of inside surfacing layer on direction, and section is straight line.In the shown embodiment, side plate 90
Height be 80mm, with a thickness of 20mm, interlude is in arc-shaped, and side plate both wings angle is 18 ° -22 ° and (is in illustrated embodiment
20 °), at 95-101 degree angle (being 98 ° of angles in illustrated embodiment) between bottom plate 80 and side plate 90.
Referring to shown in Fig. 5 A to 5C, the principle of water-stop foundation is described in detail.
When voltage-stablizer starting, the saturated vapor of high temperature and pressure passes through the pressure stabilizing of the non-covering and heat insulating layer in part in voltage-stablizer
Process pipe 10, pressurizer safety valve adapter tube 30 and safe end 20 on device safety valve carry out heat transfer and hot spoke to external environment
It penetrates；
Then, the fractional saturation water vapour in seal water system condenses and successively passes through pressurizer safety valve adapter tube safe end 20
It is instilled in catchment covers 70 with pressurizer safety valve adapter tube 30.When condensation water level covers 30 inner wall overlaying of pressurizer safety valve adapter tube
The minimum point of 40 upper surface of layer, and there is difference in height in seal water system inlet and outlet liquid level, illustrates that water-stop has built up.
The foundation of water-stop has separated the connection between voltage-stablizer vapor phase space and pressurizer safety valve, prevents in voltage-stablizer
Hydrogen by pressurizer safety valve to the external world discharge.Since the condensed water in seal water system is cold by high temperature and pressure saturated vapor
It is solidifying to be formed, and be connected with voltage-stablizer high temperature vapor phase space, so that condensate temperature is higher in seal water system, normally transported in voltage-stablizer
Between the departure date, the temperature of condensed water and the voltage-stablizer vapor phase space temperature difference can be effectively reduced safety valve less than 30 DEG C in seal water system
(1) hydraulic load that downstream drain pipeline is born after opening.
Compared with the existing technology, nuclear power plant voltage stabilizer water seal arrangement provided by the invention can quickly form water seal, avoid
The risk of hydrogen leak, structure is simple, easily manufactured.In addition, condensate temperature can control lower than pressure stabilizing in seal water system
In device in the range of 30 DEG C of saturated vapor temperature, the waterpower load that the discharge pipe line in safety valve downstream is born can be effectively relieved
Lotus saves the arrangement space outside voltage-stablizer.
According to above-mentioned principle, the present invention can also be made appropriate changes and modifications to the above embodiments.Therefore, this hair
It is bright to be not limited to specific embodiment disclosed and described above, some modifications and changes of the invention should also be as to fall into this
In the scope of protection of the claims of invention.In addition, although being used some specific terms in this specification, these terms
Merely for convenience of description, it does not limit the present invention in any way.
Claims (10)
1. a kind of nuclear power plant voltage stabilizer water seal arrangement characterized by comprising
Upper cover ontology, equipped with the inside surfacing layer and the insulating layer on the outside of voltage-stablizer being located on the inside of voltage-stablizer；
The pressurizer safety valve adapter tube of extension is tilted upward through upper cover ontology, pressurizer safety valve adapter tube is equipped with safe end,
Safe end is connect with the process pipe on pressurizer safety valve；And
The catchment covers of pressurizer safety valve adapter tube lower section are set to, catchment covers are fixed on the overlay cladding of upper cover inner surface simultaneously certainly
Overlay cladding tilts upward extension；
Wherein, catchment covers are equipped with straight bottom plate and the side plate around bottom edge, and bottom plate, side plate and inside surfacing layer are common
Condensation water collection cavity is surrounded, condenses the condensed water to be formed for collecting saturated vapor, and the top of bottom plate is located at inner surface
The top of overlay surface minimum point.
2. nuclear power plant voltage stabilizer water seal arrangement according to claim 1, it is characterised in that: the insulating layer with a thickness of
280mm-300mm。
3. nuclear power plant voltage stabilizer water seal arrangement according to claim 1, it is characterised in that: the safety valve process pipe with
Pressurizer safety valve adapter tube safe end is connected by butt weld.
4. nuclear power plant voltage stabilizer water seal arrangement according to claim 1, it is characterised in that: the pressurizer safety valve adapter tube
At least partly extend insulating layer with safe end.
5. nuclear power plant voltage stabilizer water seal arrangement according to claim 1, it is characterised in that: the safety valve process pipe,
Pressurizer safety valve adapter tube and at least shared 480mm of safe end extend insulating layer.
6. nuclear power plant voltage stabilizer water seal arrangement according to claim 1, it is characterised in that: the safety valve connecting pipe and safety
End is connected by butt weld, and the pressurizer safety valve adapter tube is connected with upper cover ontology by butt weld.
7. nuclear power plant voltage stabilizer water seal arrangement according to claim 1, it is characterised in that: the catchment covers by austenite not
Rust steel is integrally stamped to form.
8. nuclear power plant voltage stabilizer water seal arrangement according to claim 1, it is characterised in that: the angle of the side plate both wings is
18-22 degree.
9. nuclear power plant voltage stabilizer water seal arrangement according to claim 1, it is characterised in that: the angle of the bottom plate and side plate
For 95-101 degree.
10. a kind of nuclear power plant voltage stabilizer, which is characterized in that including nuclear power station pressure stabilizing described in any one of claim 1-9
Device water seal arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811381334.2A CN109273103A (en) | 2018-11-20 | 2018-11-20 | Nuclear power plant voltage stabilizer and its water seal arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811381334.2A CN109273103A (en) | 2018-11-20 | 2018-11-20 | Nuclear power plant voltage stabilizer and its water seal arrangement |
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| Publication Number | Publication Date |
|---|---|
| CN109273103A true CN109273103A (en) | 2019-01-25 |
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| CN201811381334.2A Pending CN109273103A (en) | 2018-11-20 | 2018-11-20 | Nuclear power plant voltage stabilizer and its water seal arrangement |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2954580B1 (en) * | 1998-09-18 | 1999-09-27 | 日本ニユクリア・フユエル株式会社 | Fuel rod end plug welding method |
| CN201590265U (en) * | 2010-01-22 | 2010-09-22 | 中广核检测技术有限公司 | Radiographic inspection device for weld joint between lower seal head and surge nozzle of nuclear power plant pressurizer |
| CN203026168U (en) * | 2012-12-13 | 2013-06-26 | 中国核动力研究设计院 | Pressure stabilizer spraying device of pressurized water reactor nuclear power plant |
| CN205177413U (en) * | 2015-11-18 | 2016-04-20 | 深圳中广核工程设计有限公司 | Stabiliser for nuclear power station |
| CN106328216A (en) * | 2016-08-30 | 2017-01-11 | 中广核工程有限公司 | Water seal device for nuclear power plant voltage stabilizer and nuclear power plant voltage stabilizer |
| CN108181099A (en) * | 2017-12-27 | 2018-06-19 | 西安交通大学 | A kind of nuclear reactor pressurizer safety valve leak test by filling water system and its test method |
-
2018
- 2018-11-20 CN CN201811381334.2A patent/CN109273103A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2954580B1 (en) * | 1998-09-18 | 1999-09-27 | 日本ニユクリア・フユエル株式会社 | Fuel rod end plug welding method |
| CN201590265U (en) * | 2010-01-22 | 2010-09-22 | 中广核检测技术有限公司 | Radiographic inspection device for weld joint between lower seal head and surge nozzle of nuclear power plant pressurizer |
| CN203026168U (en) * | 2012-12-13 | 2013-06-26 | 中国核动力研究设计院 | Pressure stabilizer spraying device of pressurized water reactor nuclear power plant |
| CN205177413U (en) * | 2015-11-18 | 2016-04-20 | 深圳中广核工程设计有限公司 | Stabiliser for nuclear power station |
| CN106328216A (en) * | 2016-08-30 | 2017-01-11 | 中广核工程有限公司 | Water seal device for nuclear power plant voltage stabilizer and nuclear power plant voltage stabilizer |
| CN108181099A (en) * | 2017-12-27 | 2018-06-19 | 西安交通大学 | A kind of nuclear reactor pressurizer safety valve leak test by filling water system and its test method |
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Application publication date: 20190125 |
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