CN202349238U - Heavy-caliber buckle type gate valve with supercritical parameter - Google Patents
Heavy-caliber buckle type gate valve with supercritical parameter Download PDFInfo
- Publication number
- CN202349238U CN202349238U CN2011205303695U CN201120530369U CN202349238U CN 202349238 U CN202349238 U CN 202349238U CN 2011205303695 U CN2011205303695 U CN 2011205303695U CN 201120530369 U CN201120530369 U CN 201120530369U CN 202349238 U CN202349238 U CN 202349238U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- valve body
- flashboard
- rod support
- 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
Images
Landscapes
- Mechanically-Actuated Valves (AREA)
Abstract
The utility model relates to a heavy-caliber buckle type gate valve with a supercritical parameter, which comprises a valve body, a valve cover, a valve rod support, a valve rod, a valve rod nut, a left gate plate and a right gate plate, wherein the valve cover and the valve rod support are arranged on the top end of the valve body; the valve rod nut is arranged on the upper part of the valve rod support; the valve rod nut is in internal thread fit with the valve rod with the lower end stretching into the valve body; gate plates of the left gate plate and the right gate plates, which are arranged on one end of a downstream flow channel of the valve body, are drilled with balanced holes for communicating an upstream flow channel with a central cavity of the valve body; the balanced holes can be used for balancing pressure between a fluid of the central cavity of the valve body and the upstream flow channel; and a guide late is arranged on the valve rod, so that the valve rod can be only moved up and down when the valve is in an opening process, and can be prevented from being rotated axially, and the opening degree of the valve can be visually judged. A stop nut can be used for limiting a down stroke of the valve, and excessive closing of the valve caused by overlarge closing force is avoided.
Description
Technical field
The utility model relates to a kind of overcritical valve, particularly a kind ofly is not prone to that valve stem crack, flashboard and valve seat are killed and valve rod and Stem Mut are killed the supercritical parameter heavy caliber button gate valve of phenomenon.
Background technique
Advantages such as the power station gate valve is high pressure resistant, high temperature resistant, corrosion-resistant with it, good airproof performance, wear-resistant and long service life are widely used in all types of industries system, realize the open and close of medium, for important effect has been brought into play in the stable and control of system.The power station gate valve of existing technology usually can valve stem crack, and flashboard and valve seat are killed, the common accident that valve rod and Stem Mut are killed; The reason that these accidents occur is:
1, after the valve body lumen boosts unusually, is closed in lumen hydrodynamic pressure between the upstream and downstream both sides sealing face far above the phenomenon of upstream pressure.One of which lumen fluid is expanded by the upstream fluid heat temperature raising, causes pressure acutely to raise, and its two flashboards turn-off transient fluid is closed in lumen; Can't outflow, during unlatching in the cavity space driven device drive on valve rod and the flashboard and move further extruding because the compressibility of liquid is very limited; Pressure is increased severely, and pressure increases severely and the geometrical progression increase usually can occur, considerably beyond the valve rod Intensity Design limit; Cause valve to kill, or the valve stem crack phenomenon is comparatively common.
2. existing valve do not consider the temperature difference and closes power two big reasons in design, typically temperature difference operating mode is, valve is closed in cold conditions, opens after hot again; Because the elongation of valve rod expanded by heating further compresses flashboard, increase the moment of closing of flashboard; Cause the flashboard wedging, close as hot, cold conditions is opened; Because both sides valve seat thermal distortion causes that the wide change of shelves is big, cold conditions is then shunk and is diminished, and causes the flashboard wedging again; Adding NBS does not have the requirement of aperture sign to the power station gate valve, and valve can only be judged aperture with feel, and the probability that the flashboard wedging then takes place is bigger.
3. a shutoff stroke device of not limiting, in the Denso debugging not at that time, the power of closing was excessive, and flashboard is prone to hit with the valve body bottom and splits or be out of shape, and valve aperture is excessive, is prone to cause valve rod and Stem Mut to kill phenomenon.
Therefore design a kind of Safety performance high, be not prone to that valve stem crack, flashboard and valve seat are killed and valve rod and Stem Mut to kill the overcritical gate valve of phenomenon particularly important.
Summary of the invention
The technical problem that the utility model will solve provides and a kind ofly is not prone to that valve stem crack, flashboard and valve seat are killed and valve rod and Stem Mut are killed the supercritical parameter heavy caliber button gate valve of phenomenon.
For solving the problems of the technologies described above; The technological scheme of the utility model is: a kind of supercritical parameter heavy caliber button gate valve; Comprise valve body, valve gap, valve rod support, valve rod, Stem Mut and left and right flashboard, valve gap and valve rod support are installed in the valve body top, and valve rod support top is equipped with Stem Mut; Said Stem Mut screw-internal thread fit has the lower end to stretch into the valve rod in the valve body; The lower end of said valve rod is connected with left and right flashboard, is provided with plunger tip between the left and right flashboard, and its innovative point is: be positioned in the said left and right flashboard and be drilled with the equalizing orifice that is communicated with upstream canal and valve body lumen on the flashboard of valve body upstream canal one side; Be fixed with guide plate on the said valve rod, have guiding groove on the said guide plate, the guiding rib that said valve rod support is provided with the Vertical direction setting and is slidingly matched with guiding groove is established cold conditions and hot indicating graduation respectively on the said guiding rib; The upper end screw thread of said valve rod is connected with stop nut, and said stop nut is provided with locking nut.
The advantage of the utility model is: but the equalizing orifice balance is closed in pressure between valve body lumen fluid and the upstream canal between the both sides sealing of upstream and downstream; Can shunt again simultaneously that the flashboard turn-off transient is closed in the valve body lumen and the fluid that can't outflow; Reduce Blowdown of a safety valve; Help reducing Denso moment, effectively prevent the valve stem crack that boosts unusually and cause of valve body lumen.Establish guide plate on the valve rod, valve valve rod in opening process can only be moved up and down, avoid stem shaft, can utilize cold conditions and hot indicating graduation to judge the aperture of valve very intuitively again to rotation.Stop nut then can limit the adjustable height of valve rod, avoids the excessive power of closing to cause valve excessively to close.
Description of drawings
Fig. 1 is the utility model supercritical parameter heavy caliber button gate valve structure schematic representation.
Fig. 2 is a guide board structure schematic representation in the utility model.
Embodiment
Like Fig. 1, shown in 2, comprise valve body 1, valve seat 2, equalizing orifice 4, right flashboard 3, plunger tip 5, left flashboard 6, valve rod 7, valve gap 8, key 9, lock screw 10, guide plate 11, valve rod support 12, stop nut 13, locking nut 14 and Stem Mut 15.
Above-mentioned valve gap 8 is installed in valve body 1 top with valve rod support 12; Valve rod support 12 tops are equipped with Stem Mut 15; Stem Mut 15 screw-internal thread fit have the lower end to stretch into the valve rod 7 in the valve body 1; The lower end of valve rod 7 is connected with and can cooperates left flashboard 6, the right flashboard 3 of realizing sealing with valve seat 2, is provided with plunger tip 5 between left flashboard 6, the right flashboard 3, is positioned in left flashboard 6, the right flashboard 3 on the flashboard of valve body 1 upstream canal one side to be drilled with the equalizing orifice 4 that is communicated with upstream canal and valve body lumen.
On valve rod 7, be fixed with guide plate 11 through lock screw 10 and key 9; Have guiding groove on this guide plate 11; The guiding rib 16 that valve rod support 12 is provided with the Vertical direction setting and is slidingly matched with guiding groove; Establish cold conditions and hot indicating graduation on the guiding rib 16 respectively, screw thread is connected with stop nut 13 in the upper end of valve rod 7, and stop nut 13 is provided with locking nut 14.
Claims (1)
1. supercritical parameter heavy caliber button gate valve; Comprise valve body, valve gap, valve rod support, valve rod, Stem Mut and left and right flashboard; Valve gap and valve rod support are installed in the valve body top; Valve rod support top is equipped with Stem Mut, and said Stem Mut screw-internal thread fit has the lower end to stretch into the valve rod in the valve body, and the lower end of said valve rod is connected with left and right flashboard; Be provided with plunger tip between the left and right flashboard, it is characterized in that: be positioned in the said left and right flashboard and be drilled with the equalizing orifice that is communicated with upstream canal and valve body lumen on the flashboard of valve body upstream canal one side; Be fixed with guide plate on the said valve rod, have guiding groove on the said guide plate, the guiding rib that said valve rod support is provided with the Vertical direction setting and is slidingly matched with guiding groove is established cold conditions and hot indicating graduation respectively on the said guiding rib; The upper end screw thread of said valve rod is connected with stop nut, and said stop nut is provided with locking nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205303695U CN202349238U (en) | 2011-12-19 | 2011-12-19 | Heavy-caliber buckle type gate valve with supercritical parameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205303695U CN202349238U (en) | 2011-12-19 | 2011-12-19 | Heavy-caliber buckle type gate valve with supercritical parameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202349238U true CN202349238U (en) | 2012-07-25 |
Family
ID=46538245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205303695U Expired - Fee Related CN202349238U (en) | 2011-12-19 | 2011-12-19 | Heavy-caliber buckle type gate valve with supercritical parameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202349238U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253778A (en) * | 2020-09-30 | 2021-01-22 | 北京航天石化技术装备工程有限公司 | Double plate valve |
| CN113757402A (en) * | 2021-09-10 | 2021-12-07 | 浙江胜得龙阀门有限公司 | Gate valve with closing limiting device |
-
2011
- 2011-12-19 CN CN2011205303695U patent/CN202349238U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253778A (en) * | 2020-09-30 | 2021-01-22 | 北京航天石化技术装备工程有限公司 | Double plate valve |
| CN113757402A (en) * | 2021-09-10 | 2021-12-07 | 浙江胜得龙阀门有限公司 | Gate valve with closing limiting device |
| CN113757402B (en) * | 2021-09-10 | 2023-11-07 | 浙江胜得龙阀门有限公司 | Gate valve with closing limiting device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204127447U (en) | A kind of adjustable Emergeny Cutoff Valves | |
| CN202349238U (en) | Heavy-caliber buckle type gate valve with supercritical parameter | |
| CN202659990U (en) | Adjustable swing check valve | |
| CN202674331U (en) | Pressurizing stop valve | |
| CN104455604A (en) | High-pressure modulated type pilot operated safety valve | |
| CN203641603U (en) | Combination-type pressure relief valve | |
| CN101586690B (en) | Self-hydraulic automatic regulation valve | |
| CN104075002A (en) | Adjustable ultrahigh pressure check valve | |
| CN103899805A (en) | Micro-force switch valve with backflow stopping function | |
| CN203906964U (en) | Novel pilot solenoid valve | |
| CN107387825B (en) | Pressure reducing valve | |
| CN104712798B (en) | Combined pressure relief valve | |
| CN203131130U (en) | Check valve | |
| CN102678971B (en) | Differential pressure temperature control valve | |
| CN105422938B (en) | A kind of flow control valve | |
| CN204784806U (en) | Guide's formula gate valve | |
| CN201412528Y (en) | Automatic hydraulic automatic regulating valve | |
| CN203477331U (en) | Pressure valve with adjustable pressure | |
| CN203604683U (en) | Mechanism for releasing pressure in central cavity | |
| CN203784387U (en) | Micro-force switch valve with stop function | |
| CN102042428A (en) | Novel swing check valve | |
| CN204459328U (en) | Safety valve | |
| CN201065953Y (en) | High-temperature gate valve | |
| CN203363315U (en) | Valve cavity automatic pressure release mechanism | |
| CN205401758U (en) | Large -traffic valve that drains |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20201219 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |