CN206271436U - Primary side of steam generator of nuclear power plant adapter blind structure - Google Patents
Primary side of steam generator of nuclear power plant adapter blind structure Download PDFInfo
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- CN206271436U CN206271436U CN201621361663.7U CN201621361663U CN206271436U CN 206271436 U CN206271436 U CN 206271436U CN 201621361663 U CN201621361663 U CN 201621361663U CN 206271436 U CN206271436 U CN 206271436U
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- China
- Prior art keywords
- primary side
- steam generator
- nuclear power
- power plant
- blind structure
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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
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- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model discloses a kind of primary side of steam generator of nuclear power plant adapter blind structure, including the closure plate wedging interface and closure plate that cooperate, wherein, closure plate includes several arcs that inter panel is fixedly connected with inter panel, the square seal ring being arranged between inter panel and arc, and is arranged at the O-ring seal on closure plate circumferencial direction.Relative to prior art, the utility model primary side of steam generator of nuclear power plant adapter blind structure has advantages below：1) it is connected with primary side of steam generator low head using wedging manner, sealing is high；2) simple structure and single accessory is lightweight, is easy to operating personnel to be brought into from manhole and takes out of；3) installation and removal step is simple, saves the operating time, reduces operating personnel's quantity, significantly reduces dose of radiation suffered by operating personnel, is that the more time is won in other service works.
Description
Technical field
The utility model belongs to technical field of nuclear power, and more specifically, the utility model is related to a kind of nuclear power station steam to send out
Raw device primary side adapter blind structure.
Background technology
, it is necessary to be overhauled to steam generator heat-transfer pipe, tube sheet during Nuclear Power Station, debugging and planned outage, this
It is both needed to be carried out in steam generator (SG) primary side low head.Before being operated, it is necessary in the sealing of SG primary sides low head
SG primary side adapter closure plates are installed, to prevent low head foreign matter from falling into main pipeline in ring seat.Closure plate also has sealing simultaneously
Function, prevents the cooling agent or steam of main pipeline from entering SG primary side low heads, and operating personnel and environment are caused with radiation.Under
After work all terminates in end socket, then blind structure must be removed, recover normal condition in low head.Due to primary side low head
Interior radiation level is high, and condition of work is severe, and operating personnel's radioactive dose is larger, therefore SG primary side adapter blind structures are nuclear powers
Stand indispensable important specific purpose tool, be the important leverage for ensureing the work of maintenance operation personal security.
At present, existing SG primary sides adapter blind structure is a closure plate and a sealing ring cooperated with closure plate
Seat.As depicted in figs. 1 and 2, SG primary sides adapter closure plate is by two and half cover plates 30, inter panel component 40, sealing gasket, Yi Jiqi
It assembles the compositions such as required part, and two and half cover plates 30 are connected by articulated slab and folded up in order to be brought into from manhole, are used
The seal ring seat 50 that bolted mode is welded at SG primary side low heads with heap is connected.Installation steps are：1) sealing is installed
Pad, sealing gasket is placed in the seal ring seat 50 at SG primary side low heads；2) brought into from manhole after half cover plate 30 is folded
Low head, launches, and on sealing gasket, 14 bolts on half cover plate 30 is tightened；3) inter panel 40 is installed, by middle cover
6 bolts are tightened on plate；4) reinforcing plate is installed；5) all 20 bolts are tightened in mounting torque manipulator, straighforward operation, reach rule
Fixed pretightning force.The groundwork step of dismounting is substantially the inverse process of installation.
But, existing SG primary sides adapter blind structure still suffers from following defect：1) closure plate parts are more, weight weight
(half cover plate weighs about 24kg, and inter panel weighs about 25kg, and torque manipulator weighs about 24kg), carries and assembly and disassembly inconvenience；2) in nuclear power
Stand and calculated by the three SG maintenance of a unit during overhaul, at least needed for 18 day for human beings altogether, average collective dose is accounted for more than 40 people mSv
The 47% of SG maintenance dosage.
In view of this, it is necessory to provide a kind of primary side of steam generator of nuclear power plant adapter closure plate knot be easy to and assemble and disassemble
Structure, to solve the above problems.
Utility model content
The purpose of this utility model is：Overcome the defect of prior art, there is provided a kind of nuclear power station steam for being easy to assemble and disassemble
Generator primary side adapter blind structure.
In order to realize above-mentioned utility model purpose, the utility model connects there is provided a kind of primary side of steam generator of nuclear power plant
Pipe blind structure, including the closure plate wedging interface and closure plate for cooperating, wherein, closure plate includes inter panel, with inter panel
The two or more arcs being fixedly connected, are arranged at the square seal ring between inter panel and arc, and be arranged at
O-ring seal on closure plate circumferencial direction.
Improved as one kind of the utility model primary side of steam generator of nuclear power plant adapter blind structure, the closure plate wedge
Splice grafting mouthful heap is welded on primary side of steam generator low head, and its inner side is provided with several first boss.
Improved as one kind of the utility model primary side of steam generator of nuclear power plant adapter blind structure, the middle cover
The circular arc lower curved bent plate outside of plate and arc is provided with several second boss corresponding with first boss.
Improved as one kind of the utility model primary side of steam generator of nuclear power plant adapter blind structure, described second is convex
The top of platform and the bottom wedging of first boss.
Improved as one kind of the utility model primary side of steam generator of nuclear power plant adapter blind structure, the middle cover
The circular arc upper arcuate face outside of plate and arc is provided with the 3rd boss, for fastening O-ring seal.
Improved as one kind of the utility model primary side of steam generator of nuclear power plant adapter blind structure, the annular is close
Seal is located at the 3rd boss bottom.
Improved as one kind of the utility model primary side of steam generator of nuclear power plant adapter blind structure, the annular is close
Seal is inner hollow formula sealing ring.
Improved as one kind of the utility model primary side of steam generator of nuclear power plant adapter blind structure, the annular is close
Seal is made up of rubber.
Relative to prior art, the utility model primary side of steam generator of nuclear power plant adapter blind structure has and following has
Beneficial effect：1) it is connected with SG primary side low heads using wedging manner, sealing is high；2) simple structure and single accessory weight
Gently, it is easy to operating personnel to be brought into from manhole to take out of；3) installation and removal step is simple, saves the operating time, reduces operating personnel
Quantity, significantly reduces dose of radiation suffered by operating personnel, is that the more time is won in other service works.
Brief description of the drawings
With reference to the accompanying drawings and detailed description, to the utility model primary side of steam generator of nuclear power plant adapter closure plate
Structure and its Advantageous Effects are described in detail, wherein：
Fig. 1 is the schematic diagram of closure plate in existing primary side of steam generator of nuclear power plant adapter blind structure.
Fig. 2 is the schematic diagram of seal ring seat in existing primary side of steam generator of nuclear power plant adapter blind structure.
Fig. 3 is the schematic diagram of the utility model primary side of steam generator of nuclear power plant adapter blind structure.
Fig. 4 is the signal of closure plate wedging interface in the utility model primary side of steam generator of nuclear power plant adapter blind structure
Figure.
Fig. 5 is the decomposing schematic representation of closure plate in the utility model primary side of steam generator of nuclear power plant adapter blind structure.
Fig. 6 is the cross section of O-ring seal in the utility model primary side of steam generator of nuclear power plant adapter blind structure
Schematic diagram.
Specific embodiment
In order that goal of the invention of the present utility model, technical scheme and its Advantageous Effects become apparent from, below in conjunction with
The drawings and specific embodiments, are further elaborated to the utility model.It should be appreciated that described in this specification
Specific embodiment just for the sake of explain the utility model, be not to limit the utility model.
Refer to shown in Fig. 3, the utility model primary side of steam generator of nuclear power plant adapter blind structure includes phase interworking
The closure plate wedging interface 10 and closure plate 20 of conjunction.
Refer to shown in Fig. 3 and Fig. 4, the heap of closure plate wedging interface 10 is welded in steam generator low head primary side adapter 60
On, its inner side is provided with several first boss 102.
Refer to shown in Fig. 3 and Fig. 5, closure plate 20 includes inter panel 202, some with what inter panel 202 was fixedly connected
Individual arc 204, is arranged at the square seal ring 206 between inter panel 202 and arc 204, and be arranged at closure plate 20
O-ring seal 208 on circumferencial direction.If the circular arc lower curved bent plate outside of inter panel 202 and arc 204 is provided with
The dry second boss 210 corresponding with first boss 102, the top of second boss 210 and the bottom wedge of first boss 102
Close, the circular arc upper arcuate face outside of inter panel 202 and arc 204 is provided with the 3rd boss 212, for fastening ring packing
Circle 208.O-ring seal 208 is located at the bottom of the 3rd boss 212.
Refer to shown in Fig. 3 and Fig. 6, the inside of O-ring seal 208 is hollow, can be produced when it is subject to a thrust
The elastic force of opposite direction is realizing sealing function.
According to a preferred embodiment of the present utility model, the inner side of closure plate wedging interface 10 be provided with 8 it is square first convex
Platform 102.Two arcs 204 are bolted with inter panel 202, are set between inter panel 202 and two arcs 204
There is square seal ring 206, by the pretightning force of connecting bolt when using, be capable of achieving closure plate 20 sealing function of itself.Middle cover
Plate 202, arc 204 and square seal ring 206 form a Circular plate structure, and its circumferencial direction upper arcuate face outside is provided with the
Three boss 212, for O-ring seal 208 to be fastened in a circumferential direction, its circumferencial direction lower curved bent plate outside is provided with 8
The individual square second boss 210 corresponding with first boss 102, the top of second boss 210 and the bottom wedge of first boss 102
Close.Closure plate 20 is arranged at the raised platforms of primary side pressure inlet with the sealing surface of primary side pressure inlet, from inner hollow formula
O-ring seal 208 is sealed, and the elastic force of opposite direction can be produced to realize sealing function when it is subject to a thrust.
The installation operation step of the utility model primary side of steam generator of nuclear power plant adapter blind structure is：1) respectively
Arc 204, inter panel 202, square seal ring 206, O-ring seal 208 are brought manhole into and are spliced；2) by closure plate 20
The bottom corresponding SG low heads upper plugging plate wedging interface 10 of square second boss 210 is downwardly into, rotation.In this process
In, O-ring seal 208 is contacted with primary side adapter wall, when rotatably compressing, the O-ring seal 208 of inner hollow due to
Deformation produces elastic force so as to realize the high-seal between closure plate 20 and low head composition surface, and the groundwork step of dismounting is substantially
The inverse process of installation.
By above description, compared with prior art, the adapter of the utility model primary side of steam generator of nuclear power plant
Blind structure has the advantages that：1) it is connected with SG primary side low heads using wedging manner, sealing is high；2) structure letter
Single and single accessory is lightweight, is easy to operating personnel to be brought into from manhole and takes out of；3) installation and removal step is simple, when saving operation
Between, operating personnel's quantity is reduced, dose of radiation suffered by operating personnel is significantly reduced, it is that the more time is won in other service works.
The announcement and teaching of book according to the above description, the utility model those skilled in the art can also be to above-mentioned reality
The mode of applying carries out appropriate change and modification.Therefore, the utility model is not limited to specific implementation disclosed and described above
Some modifications and changes of the present utility model should also be as falling into scope of the claims of the present utility model by mode.
Although additionally, used some specific terms in this specification, these terms merely for convenience of description, not to this reality
With any limitation of new composition.
Claims (8)
1. a kind of primary side of steam generator of nuclear power plant adapter blind structure, including the closure plate wedging interface that cooperates and stifled
Plate, it is characterised in that：The closure plate includes inter panel, and the two or more arcs being fixedly connected with inter panel are set
Square seal ring between inter panel and arc, and it is arranged at the O-ring seal on closure plate circumferencial direction.
2. primary side of steam generator of nuclear power plant adapter blind structure according to claim 1, it is characterised in that described stifled
Plate wedging interface heap is welded on primary side of steam generator low head, and its inner side is provided with several first boss.
3. primary side of steam generator of nuclear power plant adapter blind structure according to claim 2, it is characterised in that in described
Between cover plate and arc circular arc lower curved bent plate outside be provided with several second boss corresponding with first boss.
4. primary side of steam generator of nuclear power plant adapter blind structure according to claim 3, it is characterised in that described
The top of two boss and the bottom wedging of first boss.
5. primary side of steam generator of nuclear power plant adapter blind structure according to claim 1, it is characterised in that in described
Between cover plate and arc circular arc upper arcuate face outside be provided with the 3rd boss, for fastening O-ring seal.
6. primary side of steam generator of nuclear power plant adapter blind structure according to claim 5, it is characterised in that the ring
Shape sealing ring is located at the 3rd boss bottom.
7. primary side of steam generator of nuclear power plant adapter blind structure according to claim 1, it is characterised in that the ring
Shape sealing ring is inner hollow formula sealing ring.
8. primary side of steam generator of nuclear power plant adapter blind structure according to claim 1, it is characterised in that the ring
Shape sealing ring is made up of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621361663.7U CN206271436U (en) | 2016-12-13 | 2016-12-13 | Primary side of steam generator of nuclear power plant adapter blind structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621361663.7U CN206271436U (en) | 2016-12-13 | 2016-12-13 | Primary side of steam generator of nuclear power plant adapter blind structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206271436U true CN206271436U (en) | 2017-06-20 |
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ID=59045124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621361663.7U Active CN206271436U (en) | 2016-12-13 | 2016-12-13 | Primary side of steam generator of nuclear power plant adapter blind structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206271436U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728247A (en) * | 2020-12-31 | 2021-04-30 | 核动力运行研究所 | High water level closure plate seal assembly of steam generator primary side |
-
2016
- 2016-12-13 CN CN201621361663.7U patent/CN206271436U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728247A (en) * | 2020-12-31 | 2021-04-30 | 核动力运行研究所 | High water level closure plate seal assembly of steam generator primary side |
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