CN207213239U - Novel fire resistant anti-leak forging steel ball valve - Google Patents
Novel fire resistant anti-leak forging steel ball valve Download PDFInfo
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- CN207213239U CN207213239U CN201721102264.3U CN201721102264U CN207213239U CN 207213239 U CN207213239 U CN 207213239U CN 201721102264 U CN201721102264 U CN 201721102264U CN 207213239 U CN207213239 U CN 207213239U
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Abstract
It the utility model is related to a kind of novel fire resistant anti-leak forging steel ball valve, including valve body, valve seat, spheroid, valve rod, seal and installed part, valve body is bolted to connection and formed by left valve barrel, middle valve body and right valve barrel, axle sleeve is fixedly mounted by screw in middle valve body top, airtight and watertight padding is installed between valve rod periphery and inner hole of shaft sleeve, disk spring group is installed between the nut and gland of installation airtight and watertight padding；Sealing mainly between middle valve body and axle sleeve, axle ear, left valve barrel, right valve barrel adds disk spring group sealing device using V-type spring pad and V-type metal o-ring, disk spring group provides V-type metal o-ring seal preload and high temperature compensation acts on, and prevents bolt lengthening pretightning force disappearance under high temperature；Pressure safety valve is installed in axle ear lower end, and the import of the pressure safety valve is connected by the pressure channel at axle ear center with valve pocket, discharges valve pocket abnormal pressure.It is reliable with sealing property, the features such as having a safety feature.Suitable for high-temperature medium operating mode.
Description
Technical field
The utility model belongs to valve field, more particularly to a kind of high-temperature hard sealing ball valve.The utility model is applied to height
Warm mixture condition.
Background technology
Due to ball valve circulation is good and switching speed is fast, the application on the pipeline system of high-temperature medium is also more next
It is more.Typically in the case of≤200 DEG C of media, all ball valves can all realize inside and outside sealing using O-ring seal,
Good seal performance and flexible compensation is reliable；But under 200 DEG C of ＞ high-temperature medium operating mode, the temperature tolerance of O-ring seal
Requirement can not reached, SW with outside ring can only be placed by bolt or screw to realize forced seal.This pad is at normal temperatures
It is no any problem, once under the condition of high temperature or when high and low temperature alternative changes, due to the spy of material thermal expansion itself
Property, bolt or screw will elongate, close so as to which the pressure pretightning force being applied on SW with outside ring will weaken or disappear
Envelope effect weakens or disappeared therewith, causes to leak, and under valve-closed state, safety easily occurs for valve pocket abnormal pressure
Accident.
The content of the invention
The purpose of this utility model is the problem of presence for prior art, there is provided a kind of worst hot case is in use, section prevents
Only valve pocket abnormal pressure, security performance and the reliable novel fire resistant anti-leak forging steel ball valve of sealing property.
The technical solution of the utility model includes valve body, valve seat, spheroid, valve rod, seal and installed part, and valve body is by left valve
Body, middle valve body and right valve barrel are bolted to connection composition, and valve rod lower end is fixedly connected with spheroid, and spheroid bottom is pacified with fixed
Move and coordinate mounted in the axle ear of middle body base, axle sleeve, valve rod periphery and inner hole of shaft sleeve is fixedly mounted by screw in middle valve body top
It is dynamic to coordinate, airtight and watertight padding is installed between valve rod periphery and inner hole of shaft sleeve, the airtight and watertight padding is by bolt, nut by its upper end
Gland, which compresses, to be arranged on axle sleeve, and disk spring group is installed between nut and gland；Mainly middle valve body with
Sealing between axle sleeve, axle ear, left valve barrel, right valve barrel adds disk spring group close using V-type spring pad and V-type metal o-ring
Seal apparatus, axle ear lower end installation pressure safety valve, the pressure channel and valve pocket that the import of the pressure safety valve passes through axle ear center
Connection.
In above technical scheme, the valve seat back side is provided with floating pressure ring, and cylinder bullet is installed in the spring cavity of floating pressure ring
Spring, combination sealing arrangement is set between cylindrical spring and valve channel radial direction step, the combination sealing arrangement is by spring pad, gold
Category winding sealing gasket and seal receptacle form, and are formed with and the annular groove phase interworking among spring pad end face among seal receptacle end face
The annular convex shoulder of conjunction, each installation one between the spring pad end face and seal receptacle end face inside and outside the annular convex shoulder of seal receptacle
Metal winds sealing gasket, twice carbon seal ring between floating pressure ring and the valve seat back side.
The utility model has the advantages that the sealing between middle valve body and axle sleeve, axle ear, left valve barrel, right valve barrel uses V-type
Spring pad and V-type metal o-ring add disk spring group sealing device, and it is pre- that disk spring group provides sealing to V-type metal o-ring
Clamp force, at high temperature with compensating action, it can effectively prevent the situation that bolt lengthening pretightning force disappears under high temperature；Valve pocket is pacified
Pressure safety valve is filled, discharges valve pocket abnormal pressure.It is reliable with sealing property, the features such as having a safety feature.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is partial structurtes enlarged drawing at A in the utility model Fig. 1.
Fig. 3 is partial structurtes enlarged drawing at B in the utility model Fig. 1.
Fig. 4 is partial structurtes enlarged drawing at C in the utility model Fig. 1.
Embodiment
Novel fire resistant anti-leak forging steel ball valve as shown in Figure 1, including valve body, valve seat 3, spheroid 4, valve rod 6, seal
And installed part, valve body are bolted to connection and formed by left valve barrel 10, middle valve body 5 and right valve barrel 1, the lower end of valve rod 6 and spheroid 4
It is fixedly connected, the bottom of spheroid 4 and the dynamic cooperation of axle ear 8 for being fixedly mounted on the middle bottom of valve body 5, the middle top of valve body 5 is fixed by screw
One axle sleeve 7, the periphery of valve rod 6 and the dynamic cooperation of the endoporus of axle sleeve 7 are installed, sealing is installed between the periphery of valve rod 6 and the endoporus of axle sleeve 7
Filler, the gland of its upper end is compressed and is arranged on axle sleeve 7 by bolt, nut by the airtight and watertight padding, in nut and filler pressure
Disk spring group is installed between lid, pretightning force is provided for airtight and watertight padding, and there is compensating action at high temperature, can effectively be prevented
The situation that only bolt lengthening pretightning force disappears under high temperature；Between middle valve body 5 and axle sleeve 7, axle ear 8, left valve barrel 10, right valve barrel 1
Sealing disk spring group sealing device is added using V-type spring pad and V-type metal o-ring, disk spring group is to V-type metal
Sealing ring provides seal preload, at high temperature with compensating action, can effectively prevent that bolt or screw elongate under high temperature
The situation that pretightning force disappears, as shown in Figure 2, Figure 4 shows.Pressure safety valve 9 is installed in the lower end of axle ear 8, and the import of the pressure safety valve 9 is led to
The pressure channel for crossing the center of axle ear 8 connects with valve pocket, and outlet connects with valve body import passage, when in valve-closed state lower valve chamber
During interior generation abnormal pressure, pressure safety valve 9 is opened, and valve pocket inner high voltage is discharged into valve body import passage, prevents safety
Accident.
The back side of valve seat 3 is provided with floating pressure ring 3, cylindrical spring 11 is installed in the spring cavity of floating pressure ring 2, in cylindrical spring
Combination sealing arrangement is set between 11 and valve channel radial direction step, the combination sealing arrangement is close by spring pad 12, metal winding
Packing 13 and seal receptacle 14 form, and are formed among the end face of seal receptacle 14 and the annular groove phase interworking among the end face of spring pad 12
The annular convex shoulder of conjunction, respectively pacify between the end face of spring pad 12 and the end face of seal receptacle 14 inside and outside the annular convex shoulder of seal receptacle 14
A metal winding sealing gasket 13 is filled, twice carbon seal ring 15 is set between floating pressure ring 2 and the back side of valve seat 3, by cylinder bullet
Spring 11 is reliably closed, and is prevented that caused iron rust enters in spring cavity in high-temperature pipe, causes cylindrical spring 11 to fail, is embraced
Dead ball body 4, as shown in Figure 3.
Disk spring group, cylindrical spring 11 have excellent resistance to elevated temperatures and high-strength using the materials of INCONEL X 750
Degree, can reliably provide pretension balancing force.
Claims (2)
1. a kind of novel fire resistant anti-leak forging steel ball valve, including valve body, valve seat (3), spheroid (4), valve rod (6), seal and
Installed part, valve body are bolted to connection and formed by left valve barrel (10), middle valve body (5) and right valve barrel (1), valve rod (6) lower end
It is fixedly connected with spheroid (4), spheroid (4) bottom and the dynamic cooperation of axle ear (8) for being fixedly mounted on middle valve body (5) bottom, middle valve body
(5) axle sleeve (7), valve rod (6) periphery and the dynamic cooperation of axle sleeve (7) endoporus is fixedly mounted by screw in top, cylindrical in valve rod (6)
Airtight and watertight padding is installed between face and axle sleeve (7) endoporus, the gland of its upper end is compressed peace by the airtight and watertight padding by bolt, nut
On axle sleeve (7), disk spring group is installed between nut and gland；It is characterized in that in middle valve body (5) and axle sleeve
(7), the sealing between axle ear (8), left valve barrel (10), right valve barrel (1) adds dish using V-type spring pad and V-type metal o-ring
Shape groups of springs sealing device, axle ear (8) lower end installation pressure safety valve (9), the import of the pressure safety valve (9) pass through axle ear
(8) pressure channel at center connects with valve pocket, and outlet connects with valve body import passage.
2. novel fire resistant anti-leak forging steel ball valve according to claim 1, floated it is characterized in that valve seat (3) back side is provided with
Pressure ring (2), the installation cylindrical spring (11) in the spring cavity of floating pressure ring (2), in cylindrical spring (11) and valve channel radial direction
Combination sealing arrangement is set between step, and the combination sealing arrangement winds sealing gasket (13) and sealing by spring pad (12), metal
Seat (14) is formed, and the ring to be cooperated with the annular groove among spring pad (12) end face is formed among seal receptacle (14) end face
Shape convex shoulder, respectively pacify between spring pad (12) end face and seal receptacle (14) end face inside and outside the annular convex shoulder of seal receptacle (14)
A metal winding sealing gasket (13) is filled, twice carbon seal ring (15) is set between floating pressure ring (2) and valve seat (3) back side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721102264.3U CN207213239U (en) | 2017-08-23 | 2017-08-23 | Novel fire resistant anti-leak forging steel ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721102264.3U CN207213239U (en) | 2017-08-23 | 2017-08-23 | Novel fire resistant anti-leak forging steel ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207213239U true CN207213239U (en) | 2018-04-10 |
Family
ID=61826004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721102264.3U Active CN207213239U (en) | 2017-08-23 | 2017-08-23 | Novel fire resistant anti-leak forging steel ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207213239U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533795A (en) * | 2018-06-07 | 2018-09-14 | 盐城圣科球阀有限公司 | A kind of three-way hard seal ball valve |
| CN110440021A (en) * | 2019-08-07 | 2019-11-12 | 西诺威阀门控制（苏州）有限公司 | A kind of high temperature formula DBB fixing ball valve valve group |
-
2017
- 2017-08-23 CN CN201721102264.3U patent/CN207213239U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533795A (en) * | 2018-06-07 | 2018-09-14 | 盐城圣科球阀有限公司 | A kind of three-way hard seal ball valve |
| CN110440021A (en) * | 2019-08-07 | 2019-11-12 | 西诺威阀门控制（苏州）有限公司 | A kind of high temperature formula DBB fixing ball valve valve group |
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