CN219774829U - Ultralow Wen Cezhuang formula butterfly valve - Google Patents
Ultralow Wen Cezhuang formula butterfly valve Download PDFInfo
- Publication number
- CN219774829U CN219774829U CN202320918411.3U CN202320918411U CN219774829U CN 219774829 U CN219774829 U CN 219774829U CN 202320918411 U CN202320918411 U CN 202320918411U CN 219774829 U CN219774829 U CN 219774829U
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- China
- Prior art keywords
- valve
- valve body
- clack
- sealing
- cezhuang
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- 238000007789 sealing Methods 0.000 claims abstract description 63
- 238000012423 maintenance Methods 0.000 claims abstract description 11
- 239000000945 filler Substances 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 239000012528 membrane Substances 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000007790 scraping Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 5
- 238000012856 packing Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Lift Valve (AREA)
Abstract
The utility model provides an ultralow Wen Cezhuang butterfly valve, which comprises a valve body, wherein a valve rod is arranged in the valve body in a rotating way, a valve clack is arranged on the valve rod, the valve clack is in a disc structure, the peripheral wall is conical, the valve rod is connected with one side of the large end of the valve clack, a sealing component matched with the valve clack is arranged in the valve body, the sealing component comprises a lip sealing ring, a metal sealing ring is embedded in the lip sealing ring, a maintenance port is arranged on the valve body, a valve cover is arranged on the valve body, an extension part is arranged on one side, close to the valve body, of the valve cover, a filling cavity is arranged on one side, far away from the valve body, of the valve cover, sealing filler is arranged in the filling cavity, and one end, extending out of the valve rod, of the valve body penetrates through the extension part and the filling cavity to be connected with a driving device. The ultra-low Wen Cezhuang butterfly valve provided by the utility model adopts the eccentric arrangement of the valve clack, so that the valve clack can be separated from the valve body and the sealing assembly immediately when the valve is opened, unnecessary excessive extrusion and scraping phenomena of the valve clack and the valve body are greatly eliminated, the abrasion is reduced, and the service life of the valve seat is prolonged.
Description
Technical Field
The utility model relates to the technical field of low-temperature butterfly valves, in particular to an ultralow Wen Cezhuang type butterfly valve.
Background
A cryogenic valve is a valve that operates in a cryogenic medium. The working condition of the low-temperature valve is harsh, most of working media are inflammable, explosive and high-permeability substances, and the minimum working temperature can reach-269 ℃, so that the low-temperature valve has higher requirements on design than the common valve, and various adverse phenomena caused in the low-temperature environment can be prevented.
In the prior art, the low-temperature valve has short service life, and when the valve is used for too many times or is influenced by low temperature for too long time, the sealing ring can be permanently deformed to lose part of elasticity, and a gap is formed between the valve body and the sealing ring, so that the valve is leaked.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: in order to overcome the defects that the service life of a low-temperature valve in the prior art is short, and when the valve is used for too many times or is influenced by low temperature for too long time, the sealing ring is permanently deformed to lose part of elasticity, and a gap is formed between the valve body and the sealing ring to cause leakage of the valve, the utility model provides an ultralow Wen Cezhuang butterfly valve.
The utility model solves the technical problems by adopting the technical proposal that: the utility model provides an ultralow Wen Cezhuang formula butterfly valve, includes the valve body, be equipped with the medium circulation passageway in the valve body, the valve body rotation is provided with the valve rod, be provided with the valve clack of opening or closing the medium circulation passageway on the valve rod, the valve clack is disk structure, and the periphery wall is the toper, the valve rod is connected with valve clack big end one side, be equipped with in the valve body with valve clack periphery wall complex seal assembly, seal assembly includes lip seal circle, the embedded metal seal circle that is equipped with of lip seal circle, be equipped with the maintenance mouth of being convenient for maintain or change seal assembly on the valve body, maintenance mouth department is equipped with the access cover, be equipped with the valve gap on the valve body, one side that the valve gap is close to the valve body is equipped with the extension, one side that the valve gap was kept away from the valve body is equipped with the filling cavity, the valve rod stretches out the one end of valve body and passes extension and filling cavity and be connected with drive arrangement.
The valve rod is connected with one side of the large end of the valve clack, and the valve clack is arranged eccentrically, so that the valve clack can be separated from the valve body and the sealing assembly immediately when the valve is opened, unnecessary excessive extrusion and scraping phenomena of the valve clack and the valve body are eliminated greatly, the blocking distance when the valve clack is opened is reduced, the abrasion is reduced, and the service life of the valve seat is prolonged. The lip-shaped sealing ring is embedded with a metal sealing ring, the metal sealing ring has certain flexibility, dynamic sealing can be achieved by utilizing system pressure, the sealing effect is better when the pressure is larger, the deformation of the sealing surface at low temperature is effectively compensated, and the phenomena of leakage and blocking are avoided. The valve body is provided with the maintenance port, so that the valve can be maintained on line more conveniently and quickly without disassembling the whole valve body from the fluid pipeline or disassembling the valve rod and the valve clack connected parts.
The extension of the valve cover is mainly used to protect the packing in the packing cavity, because the tightness between the packing and the valve stem is one of the keys of the cryogenic valve, where if there is a leak, the cold insulation effect will be reduced, resulting in vaporization of the cryogenic medium. In addition, in a low-temperature state, the elasticity of the sealing filler gradually becomes smaller along with the increase of time, so that the anti-leakage performance gradually decreases, the sealing filler is easy to freeze at the matching position of the sealing filler and the valve rod due to leakage, the normal operation of the valve rod is influenced, and meanwhile, the filler is easy to scratch due to the movement of the valve rod, so that large leakage is caused. Thus, the valve cover is provided with an extension to raise the position of the packing to operate the packing in an environment above 0 ℃. The driving device is used for driving the valve rod to rotate and controlling the opening and closing of the valve clack.
Further, the sealing assembly further comprises a sealing gasket used for fixing the position of the lip-shaped sealing ring, the sealing gasket is arranged on one side, far away from the valve clack, of the lip-shaped sealing ring, a check ring is arranged on one side, far away from the lip-shaped sealing ring, of the sealing gasket, and the check ring is axially arranged in a sliding mode along the valve body through a plurality of sliding rods. The medium extrudes the check ring in the medium circulation channel, so that the check ring is extruded towards the lip-shaped sealing ring, and the sealing effect is better when the pressure is higher.
Further, a limiting block for preventing the valve clack from being closed and out of position is arranged in the valve body. The limiting block can eliminate unilateral leakage caused by closing over position of the valve clack due to radial eccentric unbalanced pressure.
Further, an explosion-proof film is arranged on the access cover. If the heat flowing into the valve is excessive, the low-temperature medium in the valve can be vaporized, abnormal pressure rise is generated, and danger is caused; therefore, the explosion-proof membrane is arranged on the access cover, so that the valve body and the valve cover can be prevented from deforming or even explosion caused by abnormal pressure rise in the valve.
The beneficial effects of the utility model are as follows: according to the ultra-low Wen Cezhuang butterfly valve provided by the utility model, the eccentric arrangement of the valve clack is adopted, so that the valve clack can be separated from the valve body and the sealing assembly immediately when the valve is opened, unnecessary excessive extrusion and scraping phenomena of the valve clack and the valve body are greatly eliminated, the abrasion is reduced, and the service life of the valve seat is prolonged; the valve body is provided with a maintenance port, and a sealing element can be replaced on line, so that the valve can be maintained on line more conveniently and rapidly.
Drawings
The utility model is further described below with reference to the drawings and examples.
FIG. 1 is a schematic view of a preferred embodiment of the present utility model;
FIG. 2 is an enlarged schematic view of A in FIG. 1;
fig. 3 is a schematic view of a sealing pair of a valve flap and a valve body.
In the figure: 1. valve body, 2, valve rod, 3, valve clack, 4, valve gap, 4-1, extension, 5, sealing filler, 6, access cover, 7, stopper, 8, lip seal circle, 9, metal seal circle, 10, sealing gasket, 11, retaining ring, 12, slide bar.
Detailed Description
The present utility model will now be described in detail with reference to the accompanying drawings. The figure is a simplified schematic diagram illustrating the basic structure of the utility model only by way of illustration, and therefore it shows only the constitution related to the utility model.
As shown in fig. 1-3, the ultra-low Wen Cezhuang butterfly valve comprises a valve body 1, wherein a medium circulation channel is arranged in the valve body 1, a valve rod 2 is rotationally arranged on the valve body 1, a valve clack 3 for opening or closing the medium circulation channel is arranged on the valve rod 2, the valve clack 3 is of a disc structure, the peripheral wall is conical, the valve rod 2 is connected with one side of the large end of the valve clack 3, a sealing component matched with the peripheral wall of the valve clack 3 is arranged in the valve body 1, the sealing component comprises a lip-shaped sealing ring 8, a metal sealing ring 9 is embedded in the lip-shaped sealing ring 8, the metal sealing ring 9 is made of a high-load spiral spring, a maintenance port for facilitating maintenance or replacement of the sealing component is arranged on the valve body 1, an access cover 6 is arranged at the maintenance port, and an explosion-proof membrane is arranged on the access cover 6.
The valve body 1 is provided with a valve cover 4, one side of the valve cover 4, which is close to the valve body 1, is provided with an extension part 4-1, one side of the valve cover 4, which is far away from the valve body 1, is provided with a filling cavity, sealing filler 5 is arranged in the filling cavity, and one end, which extends out of the valve body 1, of the valve rod 2 passes through the extension part 4-1 and the filling cavity to be connected with a driving device.
As the temperature decreases, most materials, either metallic or non-metallic, produce some undesirable properties for a universal valve, such as: elongation and impact toughness may decrease; the material becomes brittle, causing the valve to crack and become dangerous, even with serious consequences, thereby reducing the strength and the service life of the valve. Therefore, reasonable material selection of the cryogenic valve is very important. Some materials must be specially treated to meet the operating requirements of the cryogenic valve. In the manufacturing process of the low-temperature valve, the valve part is processed and manufactured according with the technical requirements of the drawing design, and the part is subjected to solid solution treatment and low-temperature and cryogenic treatment according with the requirements of the standard specification. The selection of the cryogenic valve body material is generally in accordance with the following principles: the ferrite steel is selected when the temperature is higher than-100 ℃, and the austenitic steel is selected when the temperature is lower than-100 ℃.
The sealing assembly further comprises a sealing gasket 10 used for fixing the position of the lip-shaped sealing ring 8, the sealing gasket 10 is arranged on one side, far away from the valve clack 3, of the lip-shaped sealing ring 8, a check ring 11 is arranged on one side, far away from the lip-shaped sealing ring 8, of the sealing gasket 10, and the check ring 11 is axially and slidably arranged along the valve body 1 through a plurality of sliding rods 12. As the temperature decreases, the sealing performance of the conventional gasket 10 tends to be lost due to low temperature deformation, creep, and the like. Suitable sealing materials must therefore be selected to meet the low temperature requirements. In a low temperature environment, expanded graphite is generally selected as a sealing material for a simple sealing form, and graphite plus acid-resistant steel wire is generally selected for an ultralow temperature environment.
A limiting block 7 for preventing the valve clack 3 from being closed in place is arranged in the valve body 1.
Working principle:
when the valve is closed, the spring in the lip-shaped sealing ring 8 is compressed, a preload is generated to act on the valve clack 3 to seal, when pressure exists in the system, the pressure of the system can enter the position of the spring to generate a force which is beneficial to sealing, and when the pressure rises, the sealing can be more tight.
Directions and references (e.g., up, down, left, right, etc.) in this utility model may be used only to aid in the description of features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.
While the foregoing is directed to the preferred embodiment of the present utility model, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (4)
1. An ultra-low Wen Cezhuang butterfly valve, characterized in that: including valve body (1), be equipped with medium circulation passageway in valve body (1), valve body (1) internal rotation is provided with valve rod (2), be provided with valve clack (3) of opening or closing medium circulation passageway on valve rod (2), valve clack (3) are disc structure, and the peripheral wall is the toper, valve rod (2) are connected with valve clack (3) main aspects one side, be equipped with in valve body (1) with valve clack (3) peripheral wall complex seal assembly, seal assembly includes lip seal circle (8), lip seal circle (8) are embedded to be equipped with metal seal circle (9), be equipped with the maintenance mouth of being convenient for maintenance or change seal assembly on valve body (1), maintenance mouth department is equipped with access cover (6), be equipped with valve gap (4) on valve body (1), one side that valve gap (4) are close to valve body (1) is equipped with extension (4-1), one side that valve gap (4) kept away from valve body (1) is equipped with the filling cavity, the filling cavity is equipped with sealing filler (5), valve rod (2) stretch out one end (1) and extend through extension device and filling cavity (1).
2. An ultra-low Wen Cezhuang butterfly valve according to claim 1, wherein: the sealing assembly further comprises a sealing gasket (10) used for fixing the position of the lip-shaped sealing ring (8), the sealing gasket (10) is arranged on one side, far away from the valve clack (3), of the lip-shaped sealing ring (8), a check ring (11) is arranged on one side, far away from the lip-shaped sealing ring (8), of the sealing gasket (10), and the check ring (11) is axially and slidably arranged along the valve body (1) through a plurality of sliding rods (12).
3. An ultra-low Wen Cezhuang butterfly valve according to claim 1, wherein: a limiting block (7) for preventing the valve clack (3) from being closed in place is arranged in the valve body (1).
4. An ultra-low Wen Cezhuang butterfly valve according to claim 1, wherein: an explosion-proof membrane is arranged on the access cover (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320918411.3U CN219774829U (en) | 2023-04-23 | 2023-04-23 | Ultralow Wen Cezhuang formula butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320918411.3U CN219774829U (en) | 2023-04-23 | 2023-04-23 | Ultralow Wen Cezhuang formula butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219774829U true CN219774829U (en) | 2023-09-29 |
Family
ID=88110846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320918411.3U Active CN219774829U (en) | 2023-04-23 | 2023-04-23 | Ultralow Wen Cezhuang formula butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219774829U (en) |
-
2023
- 2023-04-23 CN CN202320918411.3U patent/CN219774829U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |