CN206175769U - Main water supply isolating valve - Google Patents
Main water supply isolating valve Download PDFInfo
- Publication number
- CN206175769U CN206175769U CN201621114841.6U CN201621114841U CN206175769U CN 206175769 U CN206175769 U CN 206175769U CN 201621114841 U CN201621114841 U CN 201621114841U CN 206175769 U CN206175769 U CN 206175769U
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- valve
- support
- clip
- valve body
- clamp
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Abstract
This is novel, and to belong to a nuclear level heavy -calibre high pressure sluice valve be main water supply isolating valve, concretely relates to main water supply isolating valve. Which comprises a valve body, the clamp, and a support, electric actuator, wherein the valve body is the tee bend structure of " T " type, direct pipeline of " T " type and the trunk line of nuclear power station intercommunication, be equipped with the clamp on the right angle route, the ring type structure of clamp for tightening up, be equipped with the support on the clamp, the inner wall of clamp is equipped with the recess that corresponds with valve body and support respectively, the clamp sets up fastening bolt outward, can tighten up the clamp through this fastening bolt, thereby messenger's valve body, clamp and support fixed connection, the support is flexible type part, set up electric actuator above the support. The utility model discloses an it is to show the effect: when the cut appears in nuclear power station main steam pipeline, provide the main water supply isolating valve that can meet the demands and provide quick isolation to main water -supply line.
Description
Technical field
Originally it is new to belong to core level heavy caliber high pressure gate valve i.e. main feed water isolating valve, and in particular to a kind of main feed water isolating valve.
Background technology
Main feed water isolating valve is main feed water pipe line to be provided when there is cut for nuclear power station main steam line quickly isolate,
Valve is made up of two major parts：Including the valve body including pressure-bearing shell and flap, and actuator, control system and
Its adnexa.The valve for nuclear power station critical valves, conventional such valve whole dependence on import, high cost, haul-cycle time length, one
Denier needs to change valve parameter, and foreign vendor's production cycle is very long.
Nuclear power of new generation is required to include to main feed water isolating valve：1. main feed water isolating valve must be realized quickly in 20s
Open and close；2. the natural frequency of whole valve member must not be less than 33Hz；3. 1A class shockproof requirements are ensured.
Traditional nuclear grade valve is difficult to that the point requirement of the above three can also be met under required operating mode.
The content of the invention
This new purpose is the defect for prior art, there is provided a kind of main feed water isolating valve.
What the present invention was realized in：A kind of main feed water isolating valve, including valve body, clip, support, electric device, wherein
Valve body is the three-port structure of T-shape, and the straight-through pipeline of T-shape is connected with the main pipeline of nuclear power station, and rectangular path is provided with clip,
Clip is collapsible circular ring type structure, and clip is provided with support, and the inwall of clip is respectively equipped with corresponding with valve body and support
Groove, arranges fastening bolt outside clip, by the fastening bolt clip can be tightened up, so that valve body, clip and support are fixed
Connection, support is circle flow-through part, and electric device is arranged above support.
A kind of main feed water isolating valve as above, wherein, in the passage of valve body, set gradually towards the direction of clip
Flashboard, valve rod and stuffing box, wherein flashboard are made up of two pieces of parallel-plate flashboards, and it passes through flashboard frame and connects, and flashboard is matched somebody with somebody with valve seat
Build the sealing pair of vertical main feed water isolating valve jointly, then coupled together flashboard frame and valve rod by bearing pin, enable flashboard with valve
The up and down motion of bar and move, main feed water isolating valve is opened and closed, stuffing box is cylindrical component, and its function is to put
Filler is put, filler and valve rod is sealed, it is ensured that medium does not leak outside.
The present invention remarkable result be：When there is cut in nuclear power station main steam line, there is provided desired master can be met and given
Water isolation valve is provided main feed water pipe line and quickly isolated, and is mainly reflected in herein below, and structure is 1. simplified to greatest extent, is made
Compact overall structure, and the connection between part is reduced, weight is significantly reduced, reduce center of gravity；2. what is selected is electronic
The weight of actuator has reached 479kg, and valve highly reaches 2.483 meters, improves overall anti-seismic performance, meets antidetonation
1A classes are required；3. simple structure, the probability of failure is reduced；4. the valve uses the big torque high-speed electric expreess locomotive of core level, can be 20
Fast opening and closing is realized in second；5. the natural frequency of vibration of valve is 48Hz more than desired 33Hz.6. the structure of main feed water isolating valve is also
Other similar heavy caliber high pressure valves with quick closing valve functional requirement can be applied to；7. such Valves localization, pole are realized
Big reduces cost, reduces the production cycle, is the production of nuclear power station, operation, exports and have laid a good foundation.
Description of the drawings
Fig. 1 is main feed water isolating valve appearance schematic diagram provided by the present invention；
Fig. 2 is main feed water isolating valve structure chart.
In figure：1. valve body, 2. clip, 3. support, 4. electric device, 5. flashboard, 6. valve rod, 7. stuffing box.
Specific embodiment
As shown in Figures 1 and 2, a kind of main feed water isolating valve, including valve body 1, clip 2, support 3, electric device 4,
Wherein valve body 1 is the three-port structure of T-shape, and the straight-through pipeline of T-shape is connected with the main pipeline of nuclear power station, and rectangular path is provided with
Clip 2, clip 2 is collapsible circular ring type structure, and clip 2 is provided with support 3, the inwall of clip 2 be respectively equipped with valve body 1 and
The corresponding groove of support 3, clip 2 is outer to arrange fastening bolt, and by the fastening bolt clip 2 can be tightened up, so that valve body 1,
Clip 2 is fixedly connected with support 3, and support 3 is circle flow-through part, and in the top of support 3 electric device 4 is arranged.
In the passage of valve body 1, towards the direction of clip 2 flashboard 5, valve rod 6 and stuffing box 7, wherein flashboard 5 are set gradually
It is made up of two pieces of parallel-plate flashboards, it passes through flashboard frame and connects, flashboard 5 coordinates the sealing for setting up main feed water isolating valve with valve seat
Pair, then coupled together flashboard frame with valve rod 6 by bearing pin, flashboard 5 is moved with the up and down motion of valve rod 6, make
Main feed water isolating valve can be opened and closed, and stuffing box 7 belongs to cylindrical component, and its function is to place filler, makes filler and valve
Bar 6 can be sealed, it is ensured that medium does not leak outside.
The construction featuress of compact design
The main feed water isolating valve critical piece includes valve body, flashboard, valve rod, stuffing box, support, clip, electric device.Valve
Body is connected valve body upper end and pedestal lower end by clip with support, then support upper flange is passed through with electric device adpting flange
Bolt, nut are connected, that is, realize the connection of driving means and valve.
The main feed water isolating valve of compact design, support adopts the minimum in cylinder-shaped bracket, each section of cylinder-shaped bracket to turn
Dynamic inertia is larger, with preferable shock-resistance features；Limit switch support plate is designed to longitudinal direction high low head limit switch support plate, phase
It is more longitudinal without high low head than in traditional limit switch support plate, if be used on main feed water isolating valve model machine to need to increase support
Highly reaching the purpose of arrangement limit switch, so finally employing longitudinal direction has the limit switch support plate of high low head, can be with
Support height is reduced, piecemeal vertical centre is effectively reduced, is more beneficial for ensureing that valve meets shockproof requirements；Valve body is adopted with support
Connected with clip form, connected using form of flanges relative to another kind of design, 28% is reduced in main screw lift, can
To effectively reduce piecemeal weight and center of gravity, it is more beneficial for ensureing that valve meets shockproof requirements.
Claims (2)
1. a kind of main feed water isolating valve, it is characterised in that：Including valve body (1), clip (2), support (3), electric device (4), its
Middle valve body (1) for T-shape three-port structure, the straight-through pipeline of T-shape connects with the main pipeline of nuclear power station, and rectangular path is provided with
Clip (2), clip (2) is collapsible circular ring type structure, and clip (2) is provided with support (3), and the inwall of clip (2) sets respectively
There is groove corresponding with valve body (1) and support (3), clip (2) arranges outward fastening bolt, by the fastening bolt card can be tightened up
Hoop (2), so that valve body (1), clip (2) are fixedly connected with support (3), support (3) is circle flow-through part, on support (3)
Side arranges electric device (4).
2. a kind of main feed water isolating valve as claimed in claim 1, it is characterised in that：In the passage of valve body (1), towards clip
(2) direction sets gradually flashboard (5), valve rod (6) and stuffing box (7), and wherein flashboard (5) is made up of two pieces of parallel-plate flashboards,
It passes through flashboard frame and connects, and flashboard (5) and valve seat coordinate the sealing pair for setting up main feed water isolating valve, then by bearing pin by flashboard frame
Couple together with valve rod (6), flashboard (5) is moved with the up and down motion of valve rod (6), enable main feed water isolating valve
Open and close, stuffing box (7) is cylindrical component, its function is to place filler, filler and valve rod (6) is sealed, and is protected
Card medium does not leak outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621114841.6U CN206175769U (en) | 2016-10-12 | 2016-10-12 | Main water supply isolating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621114841.6U CN206175769U (en) | 2016-10-12 | 2016-10-12 | Main water supply isolating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206175769U true CN206175769U (en) | 2017-05-17 |
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ID=58677582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621114841.6U Active CN206175769U (en) | 2016-10-12 | 2016-10-12 | Main water supply isolating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206175769U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107940066A (en) * | 2016-10-12 | 2018-04-20 | 中核苏阀科技实业股份有限公司 | Main feed water isolating valve |
-
2016
- 2016-10-12 CN CN201621114841.6U patent/CN206175769U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107940066A (en) * | 2016-10-12 | 2018-04-20 | 中核苏阀科技实业股份有限公司 | Main feed water isolating valve |
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