CN202834138U - Parallel type gate valve with balance hole - Google Patents
Parallel type gate valve with balance hole Download PDFInfo
- Publication number
- CN202834138U CN202834138U CN 201220518130 CN201220518130U CN202834138U CN 202834138 U CN202834138 U CN 202834138U CN 201220518130 CN201220518130 CN 201220518130 CN 201220518130 U CN201220518130 U CN 201220518130U CN 202834138 U CN202834138 U CN 202834138U
- Authority
- CN
- China
- Prior art keywords
- valve
- hole
- gate valve
- wall
- flashboard
- 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 - Lifetime
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Abstract
The utility model provides a parallel type gate valve with a balance hole. The parallel type gate valve with the balance hole solves the problems that an existing gate valve is easy to damage and a valve switch is difficult to operate. Two symmetric valve bases (2) which are arranged in symmetric grooves are arranged on the wall of a channel (11) of the valve body (1) and matched with a gate valve (3) in a sealed mode, a blind hole (7) with a T-shaped cross section is formed in the gate valve (3), a through hole (8) which is coaxial with and provided with equal diameters is formed below the gate valve (3), and the balance hole (6) which axially forms an inclined angle is formed in the wall of the through hole (8). A valve cover (10) is arranged on an upper cavity (9) of the valve body, a valve rod (4) is formed in the upper cavity (9), a cylinder column which is movably fit with the blind hole (7) is arranged at the lower end of the valve rod (4), and an external thread which is arranged at the upper end of the valve rod (4) is connected with an internal thread which is arranged on a shaft of a hand wheel (5) of the valve cover. When the valve is fully opened, the balance hole (6) is communicated with a valve cavity (12) by a hole in the wall of the channel (11).
Description
Technical field:
The utility model is relevant with valve, and is especially relevant with the flashboard of plate valve.
Background technique:
Plate valve is little with switch moment, and good seal performance is widely used by oil, Gas Industry.The sealing pair of plate valve is comprised of parallel type flashboard and valve seat, and behind the valve closing, the flashboard sealing surface is close to ring-shaped valve seats sealing surface formation sealing and is blocked medium, prevents the interior leakage of fed sheet of a media.Parallel gate plate is the major part of plate valve, at present manyly formed by integral material, on through hole without equalizing orifice.When valve wide open, front and back valve seat and parallel gate plate form sealing, and the medium in the passage and the medium in the valve pocket are separated, and this has just caused the pressure of valve pocket medium different from the pressure of passage medium, forms pressure reduction.When factor affecting such as valve pocket medium expanded by heating, pressure raises and can not may cause valve body to surpass allowable stress to the passage pressure release, damages in advance, and increased the moment of closing of valve because of pressure reduction when valve closing.Particularly high pressure and super-high pressure flat plate gate valve, as on the flashboard without equalizing orifice, bring the problems such as potential safety hazard and valve switch operating difficulties.
The model utility content:
The purpose of this utility model provides a kind of simple in structure, and is easy to operate, long service life, the parallel type flashboard with equalizing orifice that Security is good.
The utility model is achieved in that
The parallel gate valve of the utility model band equalizing orifice, there are two symmetrical valve seats 2 and flashboard 3 to be sealed and matched in the symmetrical groove on the wall of the passage 11 of valve body 1, it is the blind hole 7 of T shape that the cross section is arranged above the flashboard 3, the below has and the coaxial isodiametric through hole 8 of valve channel, have on the wall of through hole 8 and the axial equalizing orifice 6 that becomes angle, the epicoele 9 of valve body 1 has valve gap 10, valve rod 4 is arranged in the epicoele 9, there are cylinder and blind hole 7 in the lower end of valve rod 4 movingly, internal thread on the axle of the handwheel 5 on there is outside thread the upper end of valve rod 4 and is positioned at valve gap is connected, when valve wide open, the hole of equalizing orifice 6 on passage 11 walls is communicated with valve pocket 12, during valve closing, the through hole 8 of flashboard 3 is positioned at valve pocket 12.
The utility model is simple in structure, opens an equalizing orifice in the flashboard hole of stimulating the menstrual flow, and makes plate valve under full-gear, and valve pocket and channel connection without pressure reduction, had both been eliminated the potential safety hazard that valve body brings because of superpressure, had reduced again the moment of closing of valve.
The utility model has the following advantages:
(1) open equalizing orifice on the flashboard through hole, make valve pocket and passage in any situation pressure balance without pressure reduction, not only protected valve body but also reduced valve closing moment.
(2) simple in structure, easy to process, cost of production is low.
Description of drawings
Fig. 1 is the utility model system construction drawing.
Fig. 2 is the parallel type flashboard structure figure of the utility model band equalizing orifice.
Fig. 3 is the A-A sectional view of Fig. 2.
Embodiment:
The parallel type flashboard of the utility model band equalizing orifice has circular groove on the wall of valve body 1 passage 11, and two valve seats 2 are contained on the circular groove, flashboard 3 between two valve seats 2, flashboard 3 and valve rod 4 hinges, valve rod 4 is connected with the male thread of handwheel 5.Rotate handwheel 5, drive flashboard 3 by valve rod 4 and move up and down, make valve wide open and complete shut-down.Equalizing orifice 6 is arranged on the flashboard 3, and when valve such as Fig. 1 standard-sized sheet, the valve pocket 12 of valve body is communicated with by equalizing orifice 6 with passage 11, makes valve pocket and passage without pressure reduction.During valve closing, the through hole 8 of flashboard 3 is positioned at valve pocket 2.
Claims (1)
1. with the parallel gate valve of equalizing orifice, it is characterized in that having two symmetrical valve seats (2) and flashboard (3) to be sealed and matched in the symmetrical groove on the wall of passage (11) of valve body (1), it is the blind hole (7) of T shape that the cross section is arranged above the flashboard (3), the below has and the coaxial isodiametric through hole of valve channel (8), have on the wall of through hole (8) and the axial equalizing orifice (6) that becomes angle, the epicoele (9) of valve body (1) has valve gap (10), valve rod (4) is arranged in the epicoele (9), there are cylinder and blind hole (7) in the lower end of valve rod (4) movingly, internal thread on the axle of the handwheel (5) on there is outside thread the upper end of valve rod (4) and is positioned at valve gap is connected, when valve wide open, the hole of equalizing orifice (6) on passage (11) wall is communicated with valve pocket (12), during valve closing, the through hole (8) of flashboard (3) is positioned at valve pocket (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220518130 CN202834138U (en) | 2012-10-11 | 2012-10-11 | Parallel type gate valve with balance hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220518130 CN202834138U (en) | 2012-10-11 | 2012-10-11 | Parallel type gate valve with balance hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202834138U true CN202834138U (en) | 2013-03-27 |
Family
ID=47945847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220518130 Expired - Lifetime CN202834138U (en) | 2012-10-11 | 2012-10-11 | Parallel type gate valve with balance hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202834138U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022675A (en) * | 2019-12-22 | 2020-04-17 | 江苏政轩石油机械股份有限公司 | High-pressure large-drift-diameter small-torque manual flat valve |
-
2012
- 2012-10-11 CN CN 201220518130 patent/CN202834138U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022675A (en) * | 2019-12-22 | 2020-04-17 | 江苏政轩石油机械股份有限公司 | High-pressure large-drift-diameter small-torque manual flat valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHENGDU JINLING ENERGY EQUIPMENT CO., LTD. Free format text: FORMER NAME: CHENGDU JINLING VALVES CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 611930, No. 476, Mudan Avenue, Pengzhou, Sichuan, Chengdu Patentee after: CHENGDU JINLING ENERGY EQUIPMENT Co.,Ltd. Address before: 611930, No. 476, Mudan Avenue, Pengzhou, Sichuan, Chengdu Patentee before: CHENGDU JINLING VALVES Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |