CN208634386U - Air tight structure under valve hot conditions - Google Patents
Air tight structure under valve hot conditions Download PDFInfo
- Publication number
- CN208634386U CN208634386U CN201821165527.XU CN201821165527U CN208634386U CN 208634386 U CN208634386 U CN 208634386U CN 201821165527 U CN201821165527 U CN 201821165527U CN 208634386 U CN208634386 U CN 208634386U
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- CN
- China
- Prior art keywords
- connecting rod
- blade
- valve
- hot conditions
- air tight
- 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 - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 30
- 229920002943 EPDM rubber Polymers 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Mechanically-Actuated Valves (AREA)
- Lift Valve (AREA)
- Details Of Valves (AREA)
Abstract
The utility model discloses the air tight structures under a kind of valve hot conditions, including valve body, blade and multi link component, blade and multi link component are located at valve inner, multi link component includes first connecting rod, second connecting rod, third connecting rod and fourth link, the bottom end of first connecting rod is fixedly connected with blade, the top of first connecting rod is rotatablely connected with wherein one end of fourth link and second connecting rod respectively by the first pin shaft and the second pin shaft, the other end of fourth link is connect with main axis, the other end of second connecting rod is rotatablely connected by wherein one end of third pin shaft and third connecting rod, wherein one end of third connecting rod is also connect with main axis, the other end of third connecting rod extends to the outside of valve body, blade is located at valve body limit top, seal groove is formed on the blade surface contacted with valve body limit, it is provided in seal groove close Sealing；The utility model improves the reliability of valve, and ensures the air-tightness after valve event, meets equipment to the technical requirements of valve.
Description
Technical field
The utility model relates to the air tight structures under a kind of valve hot conditions, belong to nuclear power generating equipment technical field.
Background technique
In breakdown action, the angle of blade and valve body can change common valve in the prior art, and blade cannot
Lifted by level, sealing element has abrasion, moreover, common valve cannot meet equipment to valve gas under 270 DEG C of hot conditions
The technical requirements of close property and amount of leakage.
Summary of the invention
To solve the deficiencies in the prior art, the utility model provides the air tight structure under a kind of valve hot conditions, leads to
Excessive link assembly movement combination makes blade do integral level promotion, lowering action in unlatching, closing movement, avoids sealing
The fretting wear of part increases the service life of sealing element, improves the reliability of valve, and ensures airtight after valve event
Property, so that valve is met equipment under 270 DEG C of hot conditions to the technical requirements of valve air-tightness and amount of leakage.
The technology employed by the present utility model is
Air tight structure under valve hot conditions, including valve body, blade and multi link component, the blade and multi link
Component is located at valve inner, and the multi link component includes first connecting rod, second connecting rod, third connecting rod and fourth link, described
The bottom end of first connecting rod is fixedly connected with blade, and the top of the first connecting rod is by the first pin shaft and the second pin shaft respectively with the
The rotation connection of wherein one end of double leval jib and second connecting rod, the other end of the fourth link connect with main axis, and described the
The other end of two connecting rods is rotatablely connected by wherein one end of third pin shaft and third connecting rod, wherein one end of the third connecting rod
It is also connect with main axis, the other end of the third connecting rod extends to the outside of valve body, and the blade is located in valve body limit
Side is formed with seal groove on the blade surface contacted with valve body limit, sealing element is provided in seal groove.
As the further preferred of the utility model, the bottom end of the first connecting rod is formed with flange plate structure, and described
The bottom end of one connecting rod is fixedly connected by flange plate structure with blade.
As the further preferred of the utility model, the first connecting rod, second connecting rod and fourth link are respectively set
There are two, two fourth links are located at the two sides of two first connecting rods, two second connecting rods be located at two first connecting rods it
Between, it is located between two second connecting rods with the third connecting rod connecting pin of second connecting rod rotation connection, third connecting rod and main axis
The position of connection is located between two fourth links.
As the further preferred of the utility model, the seal groove is inverted trapezoidal slot.
As the further preferred of the utility model, the sealing element is annular non-notch sealing strip.
As the further preferred of the utility model, the sealing element is ethylene propylene diene monomer (EPDM) material.
The utility model has the beneficial effects that: combining by multi link component movement, make blade in unlatching, closing movement
When do integral level promoted, lowering action, avoid the fretting wear of sealing element, increase the service life of sealing element, improve valve
The reliability of door, and ensure the air-tightness after valve event, so that valve is met equipment under 270 DEG C of hot conditions to valve gas
The technical requirements of close property and amount of leakage.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the portion the A enlarged structure schematic diagram in Fig. 1；
Fig. 3 is the schematic perspective view of multi link component；
Fig. 4 is the schematic diagram of the section structure of multi link component；
Fig. 5 is valve opening time angle curve schematic diagram in embodiment；
Main appended drawing reference meaning is as follows in figure:
1- valve body, 2- blade, 3- first connecting rod, 4- second connecting rod, 5- third connecting rod, 6- fourth link, the first pin shaft of 7-,
The second pin shaft of 8-, 9- third pin shaft, 10- main shaft, 11- sealing element.
Specific embodiment
Specific introduction is done to the utility model with reference to the accompanying drawings and examples.
As shown in Figs 1-4: the present embodiment is the air tight structure under a kind of valve hot conditions, including valve body 1, blade 2
With multi link component, blade 2 and multi link component are located inside valve body 1, and multi link component includes first connecting rod 3, second connecting rod
4, the bottom end of third connecting rod 5 and fourth link 6, first connecting rod 3 is fixedly connected with blade 2, and the top of first connecting rod 3 passes through first
Pin shaft 7 and the second pin shaft 8 are rotatablely connected with wherein one end of fourth link 6 and second connecting rod 4 respectively, fourth link 6 it is another
End is rotatablely connected with main shaft 10, and the other end of second connecting rod 4 is rotated by wherein one end of third pin shaft 9 and third connecting rod 5 to be connected
It connecing, wherein one end of third connecting rod 5 is also rotatablely connected with main shaft 10, and the other end of third connecting rod 5 extends to the outside of valve body 1,
Blade 2 is located at the limit of valve body 1 top, seal groove is formed on 2 surface of blade contacted limiting with valve body 1, in seal groove
It is provided with sealing element 11.
In the present embodiment, it is formed with flange plate structure in the bottom end of first connecting rod 3, the bottom end of first connecting rod 3 passes through flange
Dish structure is fixedly connected with blade 2.
In the present embodiment, there are two first connecting rod 3, second connecting rod 4 and fourth link 6 are respectively set, two fourth links 6
The two sides of two first connecting rods 3 are located at, two second connecting rods 4 are located between two first connecting rods 3, with 4 turns of second connecting rod
5 connecting pin of third connecting rod of dynamic connection is located between two second connecting rods 4, the position that third connecting rod 5 and main shaft 10 are rotatablely connected
Between two fourth links 6.
Seal groove in the present embodiment is inverted trapezoidal slot.
Sealing element 11 in the present embodiment is annular non-notch sealing strip.
Sealing element 11 in the present embodiment is ethylene propylene diene monomer (EPDM) material.
As shown in figure 5, the present embodiment is different from line movement when common valve acts, keep valve certain after unlatching
In time, the angle of blade and valve body is basically unchanged, blade integral level promoted, lowering action, be capable of forming face sealing and
Reduce the abrasion of sealing element；In order to enable valve to be still able to satisfy air-tightness requirement under 270 DEG C of hot conditions, the present embodiment is used
The sealing element full-closed structure when valve is closed, i.e., when valve is closed, sealing element is tightly pressed against between blade and valve body limit
In inverted trapezoidal slot, sealing element is isolated with hot environment, ensure that the elasticity under the high temperature conditions of sealing element；Sealing structure is adopted
It is sealed with unidirectional face, sealing element is annular non-notch sealing strip, and pressure is bigger under the conditions of pressure-bearing, and leakage is fewer, is able to satisfy
The I grade slip requirement of ASME AG-1.
The utility model makes blade be eccentric in sharf and valve center, while sharf also being made to be eccentric in valve center,
Cooperate the combination of multi link component movement, so that blade is done integral level promotion, lowering action in unlatching, closing movement, avoid close
The fretting wear of sealing increases the service life of sealing element, improves the reliability of valve, and ensures airtight after valve event
Property, so that valve is met equipment under 270 DEG C of hot conditions to the technical requirements of valve air-tightness and amount of leakage.
The above is only the preferred embodiment of the utility model patent, it is noted that for the general of the art
For logical technical staff, under the premise of not departing from the utility model patent principle, several improvements and modifications can also be made, this
A little improvements and modifications also should be regarded as the protection scope of the utility model patent.
Claims (6)
1. the air tight structure under valve hot conditions, it is characterised in that: including valve body, blade and multi link component, the leaf
Piece and multi link component are located at valve inner, and the multi link component includes first connecting rod, second connecting rod, third connecting rod and the 4th
The bottom end of connecting rod, the first connecting rod is fixedly connected with blade, and the top of the first connecting rod passes through the first pin shaft and the second pin
Axis is rotatablely connected with wherein one end of fourth link and second connecting rod respectively, and the other end and main axis of the fourth link connect
It connects, the other end of the second connecting rod is rotatablely connected by wherein one end of third pin shaft and third connecting rod, the third connecting rod
Wherein one end also connect with main axis, the other end of the third connecting rod extends to the outside of valve body, and the blade is located at
Valve body limit top, is formed with seal groove on the blade surface contacted with valve body limit, sealing element is provided in seal groove.
2. the air tight structure under valve hot conditions according to claim 1, which is characterized in that the first connecting rod
Bottom end is formed with flange plate structure, and the bottom end of the first connecting rod is fixedly connected by flange plate structure with blade.
3. the air tight structure under valve hot conditions according to claim 1, which is characterized in that described first connects
There are two bar, second connecting rod and fourth link are respectively set, two fourth links are located at the two sides of two first connecting rods, and two
A second connecting rod is located between two first connecting rods, is located at two second with the third connecting rod connecting pin of second connecting rod rotation connection
Between connecting rod, the position of third connecting rod and main axis connection is located between two fourth links.
4. the air tight structure under valve hot conditions according to claim 1, which is characterized in that the seal groove is
Inverted trapezoidal slot.
5. the air tight structure under valve hot conditions according to claim 1, which is characterized in that the sealing element is
Annular non-notch sealing strip.
6. the air tight structure under valve hot conditions according to claim 1 or 5, which is characterized in that the sealing
Part is ethylene propylene diene monomer (EPDM) material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821165527.XU CN208634386U (en) | 2018-07-23 | 2018-07-23 | Air tight structure under valve hot conditions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821165527.XU CN208634386U (en) | 2018-07-23 | 2018-07-23 | Air tight structure under valve hot conditions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208634386U true CN208634386U (en) | 2019-03-22 |
Family
ID=65737753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821165527.XU Expired - Fee Related CN208634386U (en) | 2018-07-23 | 2018-07-23 | Air tight structure under valve hot conditions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208634386U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096944A (en) * | 2020-08-20 | 2020-12-18 | 中国核电工程有限公司 | Nuclear-grade fireproof isolation valve |
-
2018
- 2018-07-23 CN CN201821165527.XU patent/CN208634386U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096944A (en) * | 2020-08-20 | 2020-12-18 | 中国核电工程有限公司 | Nuclear-grade fireproof isolation valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220622 Address after: No.117, Xisanhuan North Road, Haidian District, Beijing Patentee after: CHINA NUCLEAR POWER ENGINEERING Co.,Ltd. Address before: 214500 No.4, Weisan Road, Chengnan Park, Jingjiang Economic Development Zone, Taizhou City, Jiangsu Province Patentee before: JIANGSU HUAYANG XINSILU ENERGY EQUIPMENT CO.,LTD. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190322 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |