CN201326758Y - Pressure self-sealing gate valve - Google Patents
Pressure self-sealing gate valve Download PDFInfo
- Publication number
- CN201326758Y CN201326758Y CNU2008202170609U CN200820217060U CN201326758Y CN 201326758 Y CN201326758 Y CN 201326758Y CN U2008202170609 U CNU2008202170609 U CN U2008202170609U CN 200820217060 U CN200820217060 U CN 200820217060U CN 201326758 Y CN201326758 Y CN 201326758Y
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- valve
- sealing
- packing
- valve body
- pressure
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- Expired - Fee Related
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Abstract
The utility model relates to a pressure self-sealing gate valve, in particular to a pressure self-sealing type valve, which is widely applied to the industries of electric power, petroleum, chemical engineering and the like, and belongs to the technical field of automation control. The pressure self-sealing gate valve is characterized in that a valve rod is inserted into a valve cover; a flashboard is covered at the head of the valve rod and the valve rod is installed in a valve body; a pressure sealing ring, a sealing pressing ring, four closing rings and a pressure plate are installed in the valve body in sequence; the valve cover is installed on the valve body; a left clamping collar and a right clamping collar are installed on the valve cover; a packing pad, a packing pressing sleeve and a packing gland are sleeved on the valve rod; graphite packing and knitting packing are pressed in the calve cover in sequence; a valve rod nut, a bearing and a gland are installed in a bracket; and the assembled bracket is screwed on the valve rod and is connected with the valve body. The sealing structure is simple, the performance is secure and reliable, the debugging and the maintenance for the valve are convenient during the operation process, the sealing performance is good, and the normal operation can be ensured on high-temperature and high-pressure pipelines under working conditions.
Description
Technical field
The utility model relates to a kind of pressure selfsealings gate valve, the type of pressure selfsealings specifically valve, and it is industrial extensively to be used in electric power, oil, chemical industry etc., belongs to technical field of automatic control.
Background technique
In prior art, pressure selfsealings gate valve mainly is made up of valve body, valve seat, flashboard, valve rod, valve gap, filler etc.The wedge shape pressure seal ring of this valve has metal o-ring and flexible seal ring, as selects metal o-ring for use, and each component requirement on machining accuracy of valve selfsealings position is than higher, and the employing flexible seal ring is as debugging the improper sealing effect that can influence valve.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, thereby provide a kind of pressure selfsealings gate valve, sealing configuration is simple, performance is safe and reliable, be convenient to valve debugging and maintenance in use, good seal performance, on the pipeline of high temperature, high pressure, can guarantee the normal operation of valve under working condition.
The technological scheme that provides according to the utility model, pressure selfsealings gate valve comprises valve body, valve seat, valve rod, valve gap, valve seat is contained in the valve body, feature is that valve rod is inserted valve gap, put the flashboard valve body of packing at the valve rod head, and with the wiper seal circle, the sealing trim ring, four cyclizations, the pressing plate valve body of packing into successively, valve gap is installed on the valve body, left clamp is installed on the valve gap, right clamp, on valve rod, be inserted in Packing seat, the filler gland, Gland, graphite packing, the woollen yarn knitting filler is pressed into valve gap successively, and Stem Mut is installed in support, bearing, gland screws in the support of having assembled and is connected with valve body on the valve rod.
On the described Stem Mut handwheel is installed, fastening with nut, screw.Described valve body lumen sealing surface place's built-up welding stainless steel or cobalt base hard alloy.Described woollen yarn knitting filler adopts stainless steel or Expanded graphite folder Stainless Steel Wire seal ring.On the described support lubricating cup is installed.
Compared with the prior art the utility model has the following advantages:
1, pressure self sealing structure pattern is adopted in the utility model lumen sealing, and the operating unit sealing load on the lumen sealing surface is synthetic by two-part: the one, and pretightening unit sealing load, the 2nd, the specific pressure that forms by pressure medium.Self-tightening sealing medium pressure always is tending towards increasing pretightening unit sealing load, and the medium working pressure is higher, and operating unit sealing load is just bigger, and the lumen sealability just better.
2, valve body lumen sealing surface place's built-up welding stainless steel or cobalt base hard alloy, sealing is reliable, wear resistance is good.Stainless steel or Expanded graphite folder is not repaiied the steel wire seal ring, and interchangeability is strong, and during the assembling maintenance, mounting or dismounting are convenient, for the quality of valve provides reliable assurance.
3, the self-tightening sealing of valve screws bolt earlier and promotes valve gap before boosting, and makes between valve gap and the wedge-type seal pad and formation initial sealing condition--the pretension specific pressure on the sealing surface between valve body and the wedge-type seal circle.When pressure medium rose, valve gap was moved up by the pressure medium effect, and the sealing between valve gap and wedge-type seal circle and valve body and the wedge-type seal circle is than increasing gradually with the increase of pressure.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:
As shown in Figure 1, comprise valve body 1, valve seat 2, upper flashboard 3, valve rod 4, valve gap 5, wiper seal circle 6, sealing trim ring 7, four cyclizations 8, pressing plate 9, bolt 10, support 11, bolt 12, Packing seat 13, graphite packing 14, woollen yarn knitting filler 15, bolt 16, nut 17, filler gland 18, Gland 19, lubricating cup 20, Stem Mut 21, bearing 22, gland 23, handwheel 24, nut 25, screw 26, left clamp 27, right clamp 28, bearing pin 29, nut 30 etc.
The utility model adopts valve seat 2 to be contained in the valve body 1, and valve rod 4 is inserted valve gaps 5, at valve rod 4 heads cover upper flashboard 3, and the valve body 1 and of packing into together with wiper seal circle 6, sealing trim ring 7, four cyclizations 8, pressing plate 9 valve body 1 of packing into successively, fastening with bolt 10.Valve gap 5 is installed on the valve body 1, left clamp 27, right clamp 28, bearing pin 29 are installed on the valve gap 5, fastening with nut 30, on valve rod 4, be inserted in Packing seat 13, filler gland 18, Gland 19, fastening with bolt 16, nut 17, and graphite packing 14, woollen yarn knitting filler 15 be pressed into valve gap 5 successively.Stem Mut 21, bearing 22, gland 23 are installed in support 11, handwheel 24 is installed on Stem Mut 21, fastening with nut 25, screw 26.To screw in the support of having assembled 11 and valve body 1 on the valve rod 4, and connect with bolt 12.Lubricating cup 20 is installed on support 11.Described valve body 1 lumen sealing surface place's built-up welding stainless steel or cobalt base hard alloy.Described woollen yarn knitting filler adopts stainless steel or Expanded graphite folder Stainless Steel Wire seal ring.With all positioning parts, fastening, valve is risen close the Pass Test requirement.
The utility model adopts liquid as test(ing) medium, test is installed on the device after putting a period of time, because water evaporates in the sealing gasket, valve gap and sealing gasket are got loose, additional valves in transportation process vibration and jolt and also can make bolt, valve gap and sealing gasket get loose, destroyed the initial sealing of the former foundation of valve, so valve is installed in to suppress on the device just may produce in valve lumen position and leaks, cause leakage for fear of these factors, when on device, using, along with the rising of pressure must screw bolt once more, promote valve gap and sealing gasket, effectively set up the valve initial sealing.Under the effect of working pressure, the medium working pressure is higher, and operating unit sealing load is just bigger, and the lumen sealability just better.Therefore selfsealings form valve must utilize working medium power to promote valve gap before use once more and reach the sealing effect of selfsealings pad.
The utility model hermetic seal test pressure (gas) is 0.6PMa, and Applicable media is water, steam and wet goods.
Claims (5)
1, a kind of pressure selfsealings gate valve, comprise valve body (1), valve seat (2), valve rod (4), valve gap (5), valve seat (2) is contained in the valve body (1), it is characterized in that described valve rod (4) inserts valve gap (5), at valve rod (4) head cover upper flashboard (3) valve body (1) of packing into, with wiper seal circle (6), sealing trim ring (7), four cyclizations (8), pressing plate (9) valve body (1) of packing into successively, go up installation valve gap (5) at valve body (1), valve gap (5) is gone up left clamp (27) is installed, right clamp (28), be inserted in Packing seat (13) on the described valve rod (4), filler gland (18), Gland (19), graphite packing (14), woollen yarn knitting filler (15) is pressed into valve gap (5) successively, Stem Mut (21) is installed in support (11), bearing (22) and gland (23), the support (11) that the last screw-in of valve rod (4) has been assembled is connected with valve body (1).
2, pressure selfsealings gate valve according to claim 1 is characterized in that described Stem Mut (21) go up to install handwheel (24), and is fastening with nut (25), screw (26).
3, pressure selfsealings gate valve according to claim 1 is characterized in that described valve body (1) lumen sealing surface place's built-up welding stainless steel or cobalt base hard alloy.
4, pressure selfsealings gate valve according to claim 1 is characterized in that described woollen yarn knitting filler (15) adopts stainless steel or Expanded graphite folder Stainless Steel Wire seal ring.
5, pressure selfsealings gate valve according to claim 1 is characterized in that upward installation lubricating cup (20) of described support (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202170609U CN201326758Y (en) | 2008-11-26 | 2008-11-26 | Pressure self-sealing gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202170609U CN201326758Y (en) | 2008-11-26 | 2008-11-26 | Pressure self-sealing gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201326758Y true CN201326758Y (en) | 2009-10-14 |
Family
ID=41178731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202170609U Expired - Fee Related CN201326758Y (en) | 2008-11-26 | 2008-11-26 | Pressure self-sealing gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201326758Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338227A (en) * | 2011-07-26 | 2012-02-01 | 浙江中南阀门有限公司 | High-temperature high-pressure corrosion resisting gate valve |
| CN102359636A (en) * | 2011-08-25 | 2012-02-22 | 浙江欧拉姆阀门科技有限公司 | Multi-turn valve in threaded connection with support |
| CN103899779A (en) * | 2014-03-05 | 2014-07-02 | 大丰市奥凯流体机械有限公司 | Pressure self-sealing sluice valve |
| CN104455699A (en) * | 2014-11-28 | 2015-03-25 | 苏州市吴中区大陆电子设备厂 | Gate valve packing structure |
| CN107269865A (en) * | 2016-04-06 | 2017-10-20 | 上海电站阀门厂有限公司 | A kind of full forging electric gate valve |
| CN108443526A (en) * | 2018-05-15 | 2018-08-24 | 盐城市大昌石化设备有限公司 | Overcritical forging double disc electric gate valve |
| CN113605856A (en) * | 2021-08-11 | 2021-11-05 | 江苏宏泰石化机械有限公司 | Fracturing gas production wellhead valve with self-sealing structure |
-
2008
- 2008-11-26 CN CNU2008202170609U patent/CN201326758Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338227A (en) * | 2011-07-26 | 2012-02-01 | 浙江中南阀门有限公司 | High-temperature high-pressure corrosion resisting gate valve |
| CN102359636A (en) * | 2011-08-25 | 2012-02-22 | 浙江欧拉姆阀门科技有限公司 | Multi-turn valve in threaded connection with support |
| CN103899779A (en) * | 2014-03-05 | 2014-07-02 | 大丰市奥凯流体机械有限公司 | Pressure self-sealing sluice valve |
| CN104455699A (en) * | 2014-11-28 | 2015-03-25 | 苏州市吴中区大陆电子设备厂 | Gate valve packing structure |
| CN107269865A (en) * | 2016-04-06 | 2017-10-20 | 上海电站阀门厂有限公司 | A kind of full forging electric gate valve |
| CN108443526A (en) * | 2018-05-15 | 2018-08-24 | 盐城市大昌石化设备有限公司 | Overcritical forging double disc electric gate valve |
| CN113605856A (en) * | 2021-08-11 | 2021-11-05 | 江苏宏泰石化机械有限公司 | Fracturing gas production wellhead valve with self-sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091014 Termination date: 20101126 |