CN214063827U - Ultralow temperature middle cavity self-pressure-relief bidirectional sealing gate valve - Google Patents
Ultralow temperature middle cavity self-pressure-relief bidirectional sealing gate valve Download PDFInfo
- Publication number
- CN214063827U CN214063827U CN202022707692.7U CN202022707692U CN214063827U CN 214063827 U CN214063827 U CN 214063827U CN 202022707692 U CN202022707692 U CN 202022707692U CN 214063827 U CN214063827 U CN 214063827U
- Authority
- CN
- China
- Prior art keywords
- valve
- pressure
- gate valve
- middle cavity
- ultra
- 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.)
- Active
Links
Images
Landscapes
- Safety Valves (AREA)
Abstract
The utility model relates to an ultra-low temperature lumen is from pressure release two way seal gate valve, include: the valve body is arranged at the lower part of the ultralow temperature middle cavity self-pressure-relief bidirectional sealing gate valve; a middle cavity is arranged on the longitudinal axis of the valve body; the valve body is internally provided with a valve clack which is arranged in the middle cavity; the bottom of the valve clack is higher than the bottom of the middle cavity, and a pressure relief device is arranged on the lower part of the valve clack and is a bidirectional pressure relief device; compared with the prior art, the utility model, utilize and designed pressure relief device on the lumen, rely on pressure relief device to realize that the pressure release hole comes the pressure release, simultaneously, realized two way seal's function, solved among the prior art ultra-low temperature two way seal gate valve at the lumen pressure release. Venting to the upstream inlet end is typically accomplished by opening a vent hole in the inlet flap. However, the structure is a technical problem that the gate valve is sealed in one way, and the reverse inlet end becomes the outlet end which cannot be sealed.
Description
Technical Field
The embodiment of the utility model relates to a sealing gate valve, in particular to ultra-low temperature lumen is from two-way sealing gate valve of pressure release.
Background
The sealing surface of the ultralow-temperature bidirectional sealing gate valve is hard metal seal, and under the working condition of ultralow-temperature liquid, when the gate valve is closed, the medium can be intercepted by the middle cavity, the medium is heated and gasified due to heat conduction of the ambient temperature, the pressure of the middle cavity after gasification is increased to exceed the strength of the valve cover, the shell can be burst, the medium leaks or burns, major accidents occur, and the middle cavity is required to be decompressed at the moment. Venting to the upstream inlet end is typically accomplished by opening a vent hole in the inlet flap. However, the structure is one-way sealing of the gate valve, and the reverse inlet end becomes the outlet end and cannot be sealed.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides an ultra-low temperature lumen is from pressure release two way seal gate valve, utilizes to have designed pressure relief device on the lumen, relies on pressure relief device to realize that the pressure release hole comes the pressure release, has realized two way seal's function simultaneously.
In order to achieve the above object, the utility model discloses an embodiment has designed an ultra-low temperature lumen is from pressure release two way seal gate valve, a serial communication port, include:
the valve body is arranged at the lower part of the ultralow temperature middle cavity self-pressure-relief bidirectional sealing gate valve; a middle cavity is arranged on the longitudinal axis of the valve body;
the valve clack is arranged in the valve body and is arranged in the middle cavity; the bottom of the valve clack is higher than the bottom of the middle cavity, a pressure relief device is arranged on the lower portion of the valve clack, and the pressure relief device is a bidirectional pressure relief device.
Further, the pressure relief device further comprises:
one end of the spring is fixed on the valve clack, and the other end of the spring is propped against one side of a steel ball;
the other side of the steel ball props against a transverse small hole arranged on the valve clack; the small hole is communicated with the middle cavity.
Furthermore, the bottom of the valve clack is in an inverted U shape, a transverse small hole is formed in one side of the valve clack, and the transverse small hole penetrates through one side of the valve clack.
Further, the longitudinal axis of the valve flap coincides with the longitudinal axis of the central chamber.
Further, ultra-low temperature lumen from two-way sealing gate valve of pressure release, still include:
one end of the valve rod is movably connected to the upper part of the valve clack; the other end of the valve rod penetrates through the valve cover and the support frame and is fixedly connected with a worm gear speed reducing head;
a valve cover is fixedly connected above the valve body through a bolt; a support frame is fixed above the valve cover through bolts;
a sealing ring is sleeved on the valve rod between the valve rod and the valve cover and at the top of the middle cavity;
a filler is arranged between the valve rod and the valve cover, on the top of the valve cover and below the connection part of the valve cover and the support frame;
and a pressing sleeve is arranged above the filler.
Furthermore, a hand wheel is fixed on the worm gear speed reducing head.
Furthermore, the valve clack is in an oblique cone shape, and is attached to an inclined plane arranged on the valve body; the bottom of the valve clack extends into a concave hole below the middle cavity, and the pressure relief device is arranged on the plane of the bottom of the valve body.
Furthermore, the diameter of the steel ball is 3mm-5 mm.
Furthermore, the seal between the valve clack and the valve body is a metal hard seal.
Further, the pressure relief device is a pressure relief valve, and the opening pressure of the pressure relief valve is 1.1 times of the rated pressure of the valve body.
Compared with the prior art, the utility model, utilize and designed pressure relief device on the lumen, it comes the pressure release to rely on pressure relief device to realize the pressure release hole, and simultaneously, the function of two-way seal has been realized, the ultralow temperature two-way seal gate valve among the prior art has been solved, sealed face all is the metal hard seal, under the ultralow temperature liquid operating mode, when the valve is closed, the medium can be held back to the lumen, the medium heaies up the gasification because of ambient temperature heat-conduction, the gasification back lumen pressure risees and exceeds valve gap intensity, can arouse the casing to burst, medium leakage or burning, the major accident takes place, so require at this moment lumen pressure release. Venting to the upstream inlet end is typically accomplished by opening a vent hole in the inlet flap. However, the structure is a technical problem that the gate valve is sealed in one way, and the reverse inlet end becomes the outlet end which cannot be sealed.
Drawings
FIG. 1 is a schematic view of a pressure relief vent in the prior art
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a partially enlarged schematic view of the pressure relief device of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following will explain in detail each embodiment of the present invention with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the claims of the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments.
The utility model discloses an embodiment relates to an ultra-low temperature lumen is from two way seal gate valve of pressure release, as shown in figure 2 and figure 3, include:
the valve body 1 is arranged at the lower part of the ultralow temperature middle cavity self-pressure-relief bidirectional sealing gate valve and is used for bearing the whole structure of the whole valve; a central chamber 10 is arranged on the longitudinal axis of the valve body 1 for mounting the valve flap and for buffering the medium which is heated and gasified due to the heat conduction of the medium at the ambient temperature in the closed state.
A valve clack 2 is arranged in the valve body 1 and used for closing the valve, and the valve clack 2 is arranged in the middle cavity 10; the valve clack 2 cuts off the medium flow in the middle cavity 10, the bottom of the valve clack 2 is higher than the bottom of the middle cavity 10, the cutting-off work of the valve clack 2 is convenient, the lower part of the valve clack 2 is provided with a pressure relief device 8, the pressure relief device 8 is a bidirectional pressure relief device, the pressure relief device 8 is designed on the middle cavity, the pressure is relieved by the pressure relief device 8, meanwhile, the function of bidirectional sealing is realized, the problems that in the ultralow-temperature bidirectional sealing gate valve in the prior art, the sealing surfaces are all metal hard seals, under the working condition of ultralow temperature liquid, when the valve is closed, the medium can be intercepted by the middle cavity, the medium is heated and gasified due to the heat conduction of the environmental temperature, the pressure of the middle cavity after gasification is increased to exceed the strength of the valve cover, the shell can be burst, the medium is leaked or burned, major accidents can occur, therefore, the pressure in the middle chamber is required to be relieved to the upstream inlet end, and a pressure relief hole is usually formed in the valve clack of the inlet end to relieve the pressure; however, the structure is a technical problem that the gate valve is sealed in one way, and the reverse inlet end becomes the outlet end which cannot be sealed.
In order to achieve the above technical functions, in this embodiment, as shown in fig. 3, a structure of a pressure relief device 8 is disclosed, which further includes:
one end of a spring 82 is fixed on the valve clack 2, and the other end of the spring 82 props against one side of a steel ball 81;
the other side of the steel ball 81 props against a transverse small hole 83 arranged on the valve clack 2; the transverse aperture 83 extends through the central chamber 10.
The structure of the pressure relief device 8 can be arranged at the bottom of the middle cavity 10, when the pressure medium is heated and gasified due to heat conduction of the ambient temperature, the steel ball 81 is pushed to relieve the pressure to the inlet end after the pressure of the middle cavity is raised after the gasification, and when the pressure is relieved to the same value, the spring 82 pushes the steel ball 81 to close the transverse small hole 83 again, so that the effect of bidirectional sealing is realized.
According to the structure of the pressure relief device 8, as shown in fig. 2, the bottom of the valve flap 2 is in an inverted "U" shape, a small transverse hole 83 is formed on one side of the valve flap 2, and the small transverse hole 83 penetrates through one side of the valve flap 2. Mainly facilitating the pressure relief by the transverse small hole 83.
In the present embodiment, the longitudinal axis of the flap 2 coincides with the longitudinal axis of the central chamber 10. The valve clack is mainly convenient to install in the middle cavity 10, guarantees that the valve clack 2 is in the middle cavity 10, and the atress is balanced, lays the foundation for follow-up pressure release. At the same time, the user can select the desired position,
in order to obtain better performance, in the embodiment, the valve clack 2 is in an oblique cone shape, and the valve clack 2 is attached to an oblique plane arranged on the valve body 1; the bottom of the valve clack 2 extends into a concave hole below the middle cavity 10, and the pressure relief device 8 is arranged on the plane of the bottom of the valve body 1. Mainly be in order to guarantee that the pressure medium heats up the gasification because of ambient temperature heat conduction, can be smooth when the gasification back lumen pressure risees open and close whole valve, guarantee to realize simultaneously carrying out the stop operation to the medium.
Meanwhile, the diameter of the steel ball 81 is 3mm-5 mm. The seal between the valve clack 2 and the valve body 1 is metal hard seal. The pressure relief device 8 is a pressure relief valve, and the opening pressure of the pressure relief valve is 1.1 times of the rated pressure of the valve body 1. When the ultralow temperature middle chamber self-pressure-relief bidirectional sealing gate valve in the embodiment is closed, and the pressure in the middle chamber 10 rises to exceed 1.1 times of the rated pressure of the casing 1, the pressure relief device 8 opens the middle chamber for pressure relief. When medium pressure is reversely applied, the inlet end becomes the outlet end to be sealed, so that the ultralow-temperature gate valve is a middle-cavity self-pressure-relief bidirectional sealing gate valve.
In this embodiment, referring to fig. 2, the ultra-low temperature middle chamber self-pressure-relief bidirectional sealing gate valve in this embodiment further includes:
one end of the valve rod 3 is movably connected to the upper part of the valve clack 2; the other end of the valve rod 3 is fixedly connected with a worm gear speed reducing head 15 after penetrating through the valve cover 4 and the support frame 5;
a valve cover 4 is fixedly connected above the valve body 3 through bolts; a support frame 5 is fixed on the upper part of the valve cover 4 through bolts;
a sealing ring 6 is sleeved on the valve rod 3 between the valve rod 3 and the valve cover 4 and at the top of the middle cavity 10;
a packing 9 is arranged between the valve rod 3 and the valve cover 4, on the top of the valve cover 4 and below the connection part of the support frame 5;
a press sleeve 12 is arranged above the packing 9.
The aforesaid is whole ultra-low temperature lumen from the structure of pressure release two way seal gate valve, and the overall structure of ultra-low temperature lumen from pressure release two way seal gate valve has guaranteed that whole valve can open and close under to the ultra-low temperature state.
As shown in fig. 2, a hand wheel 11 is fixed to the worm reduction head 15. The valve in the embodiment is convenient to open and close.
It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.
Claims (10)
1. The utility model provides an ultra-low temperature lumen is from two way seal gate valve of pressure release which characterized in that includes:
the valve body is arranged at the lower part of the ultralow temperature middle cavity self-pressure-relief bidirectional sealing gate valve; a middle cavity is arranged on the longitudinal axis of the valve body;
the valve clack is arranged in the valve body and is arranged in the middle cavity; the bottom of the valve clack is higher than the bottom of the middle cavity, a pressure relief device is arranged on the lower portion of the valve clack, and the pressure relief device is a bidirectional pressure relief device.
2. The ultra-low temperature middle chamber self-decompression bidirectional sealing gate valve according to claim 1, wherein the decompression device further comprises:
one end of the spring is fixed on the valve clack, and the other end of the spring is propped against one side of a steel ball;
the other side of the steel ball props against a transverse small hole arranged on the valve clack; the transverse small hole is communicated with the middle cavity.
3. The ultra-low temperature middle chamber self-pressure-relief bidirectional sealing gate valve as claimed in claim 1, wherein the bottom of the valve flap is in an inverted "U" shape, and a lateral small hole is provided on one side of the valve flap, and the lateral small hole penetrates through one side of the valve flap.
4. The ultra-low temperature middle chamber self-venting double seal gate valve of claim 1 wherein the longitudinal axis of said flap is coincident with the longitudinal axis of said middle chamber.
5. The ultra-low temperature middle chamber self-decompression bidirectional sealing gate valve according to claim 1, characterized in that the ultra-low temperature middle chamber self-decompression bidirectional sealing gate valve further comprises:
one end of the valve rod is movably connected to the upper part of the valve clack; the other end of the valve rod penetrates through the valve cover and the support frame and is fixedly connected with a worm gear speed reducing head;
a valve cover is fixedly connected above the valve body through a bolt; a support frame is fixed above the valve cover through bolts;
a sealing ring is sleeved on the valve rod between the valve rod and the valve cover and at the top of the middle cavity;
a filler is arranged between the valve rod and the valve cover, on the top of the valve cover and below the connection part of the valve cover and the support frame;
and a pressing sleeve is arranged above the filler.
6. The ultralow temperature middle chamber self-pressure-relief bidirectional sealing gate valve as claimed in claim 5, wherein a hand wheel is fixed on the worm gear reducer.
7. The ultralow temperature middle chamber self-pressure-relief bidirectional sealing gate valve as claimed in claim 1, wherein the valve flap is in a tapered shape, and the valve flap is attached to an inclined surface arranged on the valve body; the bottom of the valve clack extends into a concave hole below the middle cavity, and the pressure relief device is arranged on the plane of the bottom of the valve body.
8. The ultralow temperature middle chamber self-pressure-relief bidirectional sealing gate valve as claimed in claim 2, wherein the diameter of the steel ball is 3mm-5 mm.
9. The ultra-low temperature middle chamber self-decompression bidirectional sealing gate valve of claim 7, characterized in that the seal between the valve flap and the valve body is metal-hard seal.
10. The ultralow temperature middle chamber self-pressure-relief bidirectional sealing gate valve as claimed in claim 7, wherein the pressure relief device is a pressure relief valve, and the opening pressure of the pressure relief valve is 1.1 times of the rated pressure of the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022707692.7U CN214063827U (en) | 2020-11-20 | 2020-11-20 | Ultralow temperature middle cavity self-pressure-relief bidirectional sealing gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022707692.7U CN214063827U (en) | 2020-11-20 | 2020-11-20 | Ultralow temperature middle cavity self-pressure-relief bidirectional sealing gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214063827U true CN214063827U (en) | 2021-08-27 |
Family
ID=77402125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022707692.7U Active CN214063827U (en) | 2020-11-20 | 2020-11-20 | Ultralow temperature middle cavity self-pressure-relief bidirectional sealing gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214063827U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283376A (en) * | 2020-11-20 | 2021-01-29 | 上海凯科阀门制造有限公司 | Ultralow temperature middle cavity self-pressure-relief bidirectional sealing gate valve |
| CN116255467A (en) * | 2023-05-10 | 2023-06-13 | 成都成高阀门有限公司 | Double-cutoff forced sealing valve and control method thereof |
-
2020
- 2020-11-20 CN CN202022707692.7U patent/CN214063827U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283376A (en) * | 2020-11-20 | 2021-01-29 | 上海凯科阀门制造有限公司 | Ultralow temperature middle cavity self-pressure-relief bidirectional sealing gate valve |
| CN116255467A (en) * | 2023-05-10 | 2023-06-13 | 成都成高阀门有限公司 | Double-cutoff forced sealing valve and control method thereof |
| CN116255467B (en) * | 2023-05-10 | 2023-07-21 | 成都成高阀门有限公司 | Double-cutoff forced sealing valve and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214063827U (en) | Ultralow temperature middle cavity self-pressure-relief bidirectional sealing gate valve | |
| CN211371398U (en) | Relief device for high-pressure hydrogen integrated cylinder valve | |
| CN109899534B (en) | Butterfly valve | |
| CN205823234U (en) | A kind of relief valve | |
| CN212251254U (en) | Ultra-low temperature ball valve | |
| CN112283376A (en) | Ultralow temperature middle cavity self-pressure-relief bidirectional sealing gate valve | |
| CN207064702U (en) | A kind of Subzero valve | |
| CN204647383U (en) | Super large caliber release pollution discharge type one-way sealing gate valve | |
| CN2536854Y (en) | Self lubricant assembled rotary plug valve with reversed tapered sealing surface | |
| CN203453478U (en) | Device for opening and closing 35MPa vehicle gas cylinder during gas filling | |
| CN210240621U (en) | Plug valve capable of being used under high pressure difference | |
| CN108662154A (en) | One kind being conveniently operated type shut-off valve | |
| CN101985990B (en) | Metal bidirectional sealing valve cavity safety relief device | |
| CN211175422U (en) | Bidirectional sealing rotary ball valve | |
| CN202001628U (en) | Bidirectional pressure-bearing fluorine rubber fire-proof butterfly valve | |
| CN201836479U (en) | Safety relief device of metal two-way sealing valve cavity | |
| CN204610917U (en) | Forged steel pipeline soft seal plate valve | |
| CN207297901U (en) | A kind of dark valve with cut-off spool | |
| CN208442579U (en) | A kind of liquid level limit valve arrangement of cylinder for liquefied gas | |
| CN217713680U (en) | But two-way compound seal structure of automatically regulated type of butterfly valve | |
| CN216200709U (en) | Special gate valve for high-temperature viscous medium | |
| CN214036946U (en) | Novel high-temperature flat gate valve | |
| CN205937946U (en) | Two -way metal seal's of high temperature high pressure unsteady ball valve | |
| CN218267415U (en) | Manual type bi-pass high liquid level emergency cut-off device | |
| CN215950519U (en) | Valve cover for valve body with prevent leaking function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |