CN208587564U - A kind of clamping hoop type pressure self-sealing shut-off valve - Google Patents
A kind of clamping hoop type pressure self-sealing shut-off valve Download PDFInfo
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- CN208587564U CN208587564U CN201821060396.9U CN201821060396U CN208587564U CN 208587564 U CN208587564 U CN 208587564U CN 201821060396 U CN201821060396 U CN 201821060396U CN 208587564 U CN208587564 U CN 208587564U
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- clamping hoop
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Abstract
The utility model relates to sampling valve equipment technical field, in particular to a kind of clamping hoop type pressure self-sealing shut-off valve, comprising: valve body, valve rod, valve rod sealing member, pressure self-sealing valve deck and valve deck connector；Wherein, valve body is stop valve body, the upward valve opening rod aperture in its spool region, pressure self-sealing valve deck are mounted in valve rod hole and connect fastening with valve body by valve deck connector, and valve rod passes through pressure self-sealing valve deck and can be slidably mounted on pressure self-sealing valve deck by valve rod sealing member；Pressure self-sealing valve deck lower edge is conical surface seal face, and conical surface seal face inner edge is provided with pressure seal slot；The utility model is designed by using clamping hoop type support Design and pressure self-sealing valve deck, can well solve the problem of high-temperature high pressure valve valve medium as caused by vibration and thermal stress relaxation leaks outside.
Description
Technical field:
The utility model relates to sampling valve equipment technical field, in particular to a kind of clamping hoop type pressure self-sealing shut-off valve.
Background technique:
Shut-off valve is widely used, is to seal most direct, most reliable valve kind in all valves, is applicable not only to mesolow,
And it is suitable for the operating conditions such as low temperature, high temperature, high pressure, super-pressure.The sealing principle of shut-off valve is to pass through power by transmission mechanism
Valve rod is transmitted on valve clack sealing surface, and it is close to form pressure by squeezing flexible deformation principle for valve clack sealing surface and sealing surface of seat
It seals, zerofriction force on sealing surface, sealed reliable.It is applied to the high temperature and high pressure cut-off valve of key position at present, such as 1000MW surpasses
Supercritical thermal power unit is up to 600 DEG C with the hydrophobic shut-off valve temperature of main steam, and operating pressure is up to 30MPa, is all known using import
The valve of name brand, and structure is complicated, components are more in addition to generally existing for domestic high temperature and high pressure cut-off valve, volume is big, cost
Outside high, the disadvantages of sealing surface is easy to wear, the service life is short, the shortcomings that valve easily leaks outside, it is that user is least receptible, once high temperature is high
Steam medium leakage is pressed, is breakneck thing, and the significant wastage to the energy.
Summary of the invention:
In consideration of it, solving the problems, such as that high temperature and high pressure cut-off valve easily leaks outside it is necessary to design a kind of new shut-off valve.
A kind of clamping hoop type pressure self-sealing shut-off valve, comprising: valve body, valve rod, valve rod sealing member, pressure self-sealing valve deck and
Valve deck connector；Wherein, valve body is stop valve body, the upward valve opening rod aperture in spool region, and pressure self-sealing valve deck is mounted on
Fastening is connect with valve body in valve rod hole and by valve deck connector, valve rod passes through pressure self-sealing valve deck and passes through valve rod sealing member
It can be slidably mounted on pressure self-sealing valve deck；Pressure self-sealing valve deck lower edge is conical surface seal face, and conical surface seal face inner edge is opened
There is pressure seal slot.
When work, high-pressure non-resistance hinders into pressure seal slot in valve, because pressure self-sealing valve deck and valve rod, valve body gap compared with
It is small, there is larger flow resistance in valve between high-pressure area and above-mentioned gap, causes to generate larger pressure between pressure seal slot and above-mentioned gap
Difference, under the differential pressure action, pressure self-sealing valve deck lower edge dilatancy generates outside tension, which makes up since heat is answered
Valve deck pretightning force deficiency problem caused by power changes realizes the robust seal of valve deck, and then realizes the purpose of design for preventing leakage.
Preferably, valve rod sealing member is made of Packing seat, packing ring, gland and hold-down grid, and Packing seat is mounted on
Between valve rod and pressure self-sealing valve deck, gland is set, hold-down grid is mounted on pressure certainly by bolt on the outside of packing ring
On sealed valve cap outside gland, and packing ring is pressed on Packing seat by gland.
Preferably, to prevent round valve rod rotation from seal spool being caused to fail, valve rod, pressure self-sealing valve deck and valve rod are connect
Contact portion, valve rod sealing member and valve stem contacts cross section are regular hexagon.
Preferably, the design further includes clamping hoop type bracket, handwheel, bearing；Wherein, clamping hoop type bracket embraces formula and is mounted on valve body
Top, clamping hoop type bracket and valve body contact portion are provided with intermeshing screw thread, and handwheel may be rotatably mounted at clip by bearing
Formula cradle top, handwheel bottom are threadedly coupled with valve stem top, have operation margin between valve rod and handwheel, clamping hoop type bracket, are prevented
The case where only influencing valve rod consolidating with respect to valve body because vibrating, and then leading to valve leakage out of steam system appearance.
Further, clamping hoop type bracket is contacted with pressure self-sealing valve deck top outer rim, and contact surface is provided with intermeshing
Screw thread, clamping hoop type bracket had both been valve deck connector, simplify structure design, reduce maintenance difficulty.
The utility model is designed by using clamping hoop type support Design and pressure self-sealing valve deck, can well solve height
The problem of warm high pressure valve valve medium as caused by vibration and thermal stress relaxation leaks outside.
Detailed description of the invention:
Attached drawing 1 is a kind of specific embodiment structural schematic diagram of clamping hoop type pressure self-sealing shut-off valve；
Attached drawing 2 is that a kind of specific embodiment pressure self-sealing valve deck partial structurtes of clamping hoop type pressure self-sealing shut-off valve are shown
It is intended to.
In figure: valve body 1, valve rod 2, Packing seat 3, packing ring 4, gland 5, hold-down grid 6, pressure self-sealing valve deck 7,
Pressure seal slot 8, clamping hoop type bracket 9, handwheel 10, bearing 11.
Specific embodiment:
A kind of clamping hoop type pressure self-sealing shut-off valve, comprising: valve body 1, valve rod 2, valve rod sealing member, pressure self-sealing valve deck
7, clamping hoop type bracket 9, handwheel 10, bearing 11；Wherein, valve body 1 is stop valve body 1, the upward valve opening rod aperture in spool region, pressure
Power self-sealing valve deck 7 is mounted in valve rod hole and connect fastening with valve body 1 by valve deck connector, and valve rod 2 is across pressure from close
Envelope valve deck 7 simultaneously can be slidably mounted on pressure self-sealing valve deck 7 by valve rod sealing member, and valve rod sealing member is by Packing seat 3, filler
Ring 4, gland 5 and hold-down grid 6 form, and Packing seat 3 is mounted between valve rod 2 and pressure self-sealing valve deck 7, packing ring 4
Gland 5 is arranged in outside, and hold-down grid 6 is mounted on pressure self-sealing valve deck 7 outside gland 5 by bolt, and is passed through
Packing ring 4 is pressed on Packing seat 3 by gland 5；7 lower edge of pressure self-sealing valve deck is conical surface seal face, conical surface seal face
Inner edge is provided with pressure seal slot 8.
Valve rod 2, pressure self-sealing valve deck 7 and 2 contact portion of valve rod, valve rod sealing member and valve rod 2 contact cross section are
Regular hexagon.
9 formula of embracing of clamping hoop type bracket is mounted on 1 top of valve body, and clamping hoop type bracket 9 and 1 contact portion of valve body are provided with intermeshing
Screw thread, clamping hoop type bracket 9 contacts with 7 top outer rim of pressure self-sealing valve deck, and contact surface is provided with intermeshing screw thread, pressure
Power self-sealing valve deck 7 and valve body 1, which are realized mutually to install by clamping hoop type bracket 9, to be fastened, and handwheel 10 is rotatably pacified by bearing 11
Mounted in 9 top of clamping hoop type bracket, 10 bottom of handwheel is connect with 2 screw top of valve rod.
Claims (5)
1. a kind of clamping hoop type pressure self-sealing shut-off valve characterized by comprising valve body, valve rod, valve rod sealing member, pressure are certainly
Sealed valve cap and valve deck connector；
Wherein, valve body is stop valve body, the upward valve opening rod aperture in spool region, and pressure self-sealing valve deck is mounted in valve rod hole
And fastening is connect with valve body by valve deck connector, valve rod passes through pressure self-sealing valve deck and is slidably pacified by valve rod sealing member
On pressure self-sealing valve deck；
Pressure self-sealing valve deck lower edge is conical surface seal face, and conical surface seal face inner edge is provided with pressure seal slot.
2. a kind of clamping hoop type pressure self-sealing shut-off valve as described in claim 1, which is characterized in that the valve rod sealing member by
Packing seat, packing ring, gland and hold-down grid composition, Packing seat are mounted between valve rod and pressure self-sealing valve deck, fill out
Expect that gland is arranged on the outside of ring, hold-down grid is mounted on pressure self-sealing valve deck outside gland by bolt, and is passed through
Packing ring is pressed on Packing seat by gland.
3. a kind of clamping hoop type pressure self-sealing shut-off valve as described in claim 1, which is characterized in that the valve rod, pressure are certainly
Sealed valve cap and valve stem contacts portion, valve rod sealing member and valve stem contacts cross section are regular hexagon.
4. a kind of clamping hoop type pressure self-sealing shut-off valve as described in claim 1, which is characterized in that further include clamping hoop type branch
Frame, handwheel, bearing；Wherein, clamping hoop type bracket embraces formula and is mounted on valve body top, and clamping hoop type bracket is provided with phase with valve body contact portion
The screw thread mutually engaged, handwheel may be rotatably mounted at clamping hoop type cradle top by bearing, and handwheel bottom and valve stem top screw thread connect
It connects.
5. a kind of clamping hoop type pressure self-sealing shut-off valve as claimed in claim 4, which is characterized in that the clamping hoop type bracket with
The contact of pressure self-sealing valve deck top outer rim, contact surface are provided with intermeshing screw thread, and clamping hoop type bracket had both been valve deck connection
Part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821060396.9U CN208587564U (en) | 2018-07-05 | 2018-07-05 | A kind of clamping hoop type pressure self-sealing shut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821060396.9U CN208587564U (en) | 2018-07-05 | 2018-07-05 | A kind of clamping hoop type pressure self-sealing shut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208587564U true CN208587564U (en) | 2019-03-08 |
Family
ID=65539408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821060396.9U Active CN208587564U (en) | 2018-07-05 | 2018-07-05 | A kind of clamping hoop type pressure self-sealing shut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208587564U (en) |
-
2018
- 2018-07-05 CN CN201821060396.9U patent/CN208587564U/en active Active
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