CN206669019U - A kind of high-temp. fixed ball valve - Google Patents
A kind of high-temp. fixed ball valve Download PDFInfo
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- CN206669019U CN206669019U CN201720245849.4U CN201720245849U CN206669019U CN 206669019 U CN206669019 U CN 206669019U CN 201720245849 U CN201720245849 U CN 201720245849U CN 206669019 U CN206669019 U CN 206669019U
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- spheroid
- valve rod
- stuffing box
- filler
- spring
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Abstract
A kind of high-temp. fixed ball valve, it includes middle body, soket head cap screw, lower valve rod, properties of journal bearing lubricated, spirotallic gasket, spheroid, spring base, spring, foot stool, stud, nut, flexible graphite sealing ring, valve seat, Petrochemical Pipe Joints, support, flat key, worm gear drive, hold-down grid, filler pressing sleeve, sliding bearing, thrust washer, valve rod, stuffing box, straight pin, filler；The utility model has good sealing property by pressure compaction seal valve seat and spheroid by spring under the relatively low complex working condition of HTHP and temperature；Sliding bearing has labyrinth type oil storage tank, can preserve lubricating grease for a long time, reduces valve rod running resistance；Hold-down grid, the contact surface of filler pressing sleeve are sphere, farthest reduce the uneven stressing conditions of compression of filler.
Description
Technical field
It the utility model is related to valve field, and in particular to a kind of high-temp. fixed ball valve.
Background technology
Its keying speed of ball valve is fast and sealing property is excellent, so long-term use of on various pipelines.But due to long-term
Using in operation, the problem of loosening and sealing leak occurs in spheroid, have to pipeline and follow-up work very big influence and to
Change or maintenance brings very big difficulty, unnecessary economic loss can be produced.
Especially there is HTHP in power station valve field, the fluid of its pipeline, while need to convey often again sometimes
Often there is sealing leak, spheroid serious wear, longevity under this harsh working environment in the characteristic of warm fluid, ordinary ball valve
Order the problems such as short, but the particularity requirement in the production process of power station simultaneously：The time that maintenance is changed is short, and the sealing to valve is than general
Port valve door is high, therefore improves the sealing life of ball valve, has important practical significance in the actual production process in power station.
Utility model content
The utility model is directed to above-mentioned the deficiencies in the prior art, there is provided a kind of high-temp. fixed ball valve, fundamentally changes
Sealing structure, is no longer position seals, nor being sealed by the elastic deformation of valve body, but relies on the pressure seal of spring
Valve seat and spheroid, there is good sealing property under the complex working condition of HTHP.
To solve problems of the prior art, the concrete technical scheme of use is：
A kind of high-temp. fixed ball valve, it includes middle body, soket head cap screw, lower valve rod, properties of journal bearing lubricated, spirotallic gasket, ball
Body, spring base, spring, foot stool, stud, nut, flexible graphite sealing ring, valve seat, Petrochemical Pipe Joints, support, flat key, worm gear drive
Dynamic device, hold-down grid, filler pressing sleeve, sliding bearing, thrust washer, valve rod, stuffing box, straight pin, filler；
The Petrochemical Pipe Joints are symmetrically arranged on the left and right end face of middle body by stud, nut, the foot stool
It is fixed on Petrochemical Pipe Joints；The lower valve rod passes through the lower end of middle body, and is fixed on by soket head cap screw on middle body, lower valve
In the Sphere orientation groove that the valve rod projection insertion spheroid that bar is set is set, downslide is provided between valve rod projection and Sphere orientation groove
Dynamic bearing；Spring, spring base, flexible graphite sealing ring, valve seat are disposed between the Petrochemical Pipe Joints and spheroid；It is described
Spirotallic gasket is provided between stuffing box and middle body, stuffing box is fixed on middle body by soket head cap screw, and passes through straight pin
Cooperation positioning is carried out with middle body, filler lower box part is inserted in the Sphere orientation groove that spheroid is set；Valve rod sequentially pass through hold-down grid,
Filler pressing sleeve, filler, stuffing box are simultaneously inserted in the Sphere orientation groove of spheroid setting, and stem bottom is provided with stuffing box contact position
Thrust washer, valve rod outer circumference surface and stuffing box inner peripheral surface contact position are provided with sliding bearing, valve rod upper end by flat key with
Worm gear drive is connected；The pedestal lower end is connected by stud, nut with stuffing box, pedestal upper end by stud, nut with
Worm gear drive is connected.
Preferable scheme, the compression travel of the spring exceed the soft graphite at a temperature of 17.6MPa pressure and 450 °C
The compress variation of sealing ring and spheroid, spring base, elastic deformation amount's sum of valve seat.
Further preferred scheme, the sliding bearing have labyrinth type oil storage tank.
Scheme still more preferably, the hold-down grid, the contact surface of filler pressing sleeve are sphere.
A kind of implementation process of high-temp. fixed ball valve is：
The pipeline operating mode in usual power station is at a temperature of 17.6MPa pressure and 450 °C, soft when under higher temperature and pressure
Property carbon seal ring can expanded by heating, but have at the same by spheroid, spring base, valve seat thermal expansion deformation amount compression,
This total deformation is presented as expansion, to exceed above-mentioned overall expansion deflection because there is provided spring, its compression travel, therefore
The sealing under good HTHP can be produced, while when temperature is relatively low, spring elongation becomes to make up the expansion after change
Shape, again such that valve seat is brought into close contact with spheroid；Sliding bearing has labyrinth type oil storage tank, can preserve lubricating grease for a long time, subtract
Few valve rod running resistance；Hold-down grid, the contact surface of filler pressing sleeve are sphere, and the compression for farthest reducing filler is uneven
Even stressing conditions.
By using such scheme, a kind of high-temp. fixed ball valve of the present utility model, it has technical effect that：
1st, the utility model is relatively low in HTHP and temperature by the pressure compaction seal valve seat and spheroid by spring
Complex working condition under there is good sealing property.
2nd, sliding bearing of the present utility model has labyrinth type oil storage tank, can preserve lubricating grease for a long time, reduces valve rod fortune
Row resistance.
3rd, hold-down grid of the present utility model, the contact surface of filler pressing sleeve are sphere, farthest reduce filler
Compress uneven stressing conditions.
Brief description of the drawings
Fig. 1 is a kind of cross-sectional view of high-temp. fixed ball valve of the utility model；
Fig. 2 is a kind of part section structural representation of high-temp. fixed ball valve of the utility model.
Embodiment
To make the purpose of this utility model, technical scheme and advantage of greater clarity, with reference to instantiation and join
According to accompanying drawing, the utility model is further described.It should be understood that these descriptions are merely illustrative, and it is not intended to limit
The scope of the utility model.In addition, in the following description, the description to known features and technology is eliminated, it is unnecessary to avoid
Obscure concept of the present utility model in ground.
As shown in Figure 1 and Figure 2：A kind of high-temp. fixed ball valve, it includes middle body 1, soket head cap screw 2, lower valve rod 3, lower slider
Bearing 4, spirotallic gasket 5, spheroid 6, spring base 7, spring 8, foot stool 9, stud 10, nut 11, flexible graphite sealing ring 12, valve seat
13rd, Petrochemical Pipe Joints 14, support 15, flat key 16, worm gear drive 17, hold-down grid 18, filler pressing sleeve 19, sliding bearing 20,
Thrust washer 21, valve rod 22, stuffing box 23, straight pin 24, filler 25；
The Petrochemical Pipe Joints 14）Symmetrically it is arranged on by stud 10, nut 11 on the left and right end face of middle body 1,
The foot stool 9 is fixed on Petrochemical Pipe Joints 14；The lower valve rod 3 passes through the lower end of middle body 1, and solid by soket head cap screw 2
It is scheduled on body 1, the valve rod projection 31 that lower valve rod 3 is set is inserted in the Sphere orientation groove 61 that spheroid 6 is set, and valve rod projection
Properties of journal bearing lubricated 4 is provided between 31 and spheroid 6；Spring 8, bullet are disposed between the Petrochemical Pipe Joints 14 and spheroid 6
Spring abutment 7, flexible graphite sealing ring 12, valve seat 13；Spirotallic gasket 5, stuffing box 23 are provided between the stuffing box 23 and middle body 1
It is fixed on by soket head cap screw 2 on middle body 1, and cooperation positioning is carried out by straight pin 24 and middle body 1, the bottom of stuffing box 23 is inserted
In the Sphere orientation groove 61 for entering the setting of spheroid 6；Valve rod 22 sequentially passes through hold-down grid 18, filler pressing sleeve 19, filler 25, stuffing box
（23 and insert in the Sphere orientation groove 61 of the setting of spheroid 6, the bottom of valve rod 22 and the contact position of stuffing box 23 are provided with thrust washer
21, the outer circumference surface of valve rod 22 is provided with sliding bearing 20 with the inner peripheral surface contact position of stuffing box 23, and the upper end of valve rod 22 passes through flat key
16 are connected with worm gear drive 17；The lower end of support 15 is connected by stud 10, nut 11 with stuffing box 23, the upper end of support 15
It is connected by stud 10, nut 11 with worm gear drive 17.
The compression travel of the spring 8 exceedes the flexible graphite sealing ring 12 below 17.6MPa pressure and 450 °C of temperature
Compress variation and spheroid 6, spring base 7, elastic deformation amount's sum of valve seat 13.
The sliding bearing 20 has labyrinth type oil storage tank.
The hold-down grid 18, the contact surface of filler pressing sleeve 19 are sphere.
A kind of implementation process of high-temp. fixed ball valve is：
The pipeline operating mode in usual power station is at a temperature of 17.6MPa pressure and 450 °C, soft when under higher temperature and pressure
Property carbon seal ring 12 can expanded by heating, but have while compressed by the thermal expansion deformation amount of spheroid 6, spring base 7, valve seat 13
Deformation, this total deformation are presented as expansion, to be deformed because there is provided spring 8, its compression travel more than above-mentioned overall expansion
Amount, therefore the sealing under good HTHP can be produced, while when temperature is relatively low, after spring elongation is to make up change
Dilatancy, again such that valve seat 13 is brought into close contact with spheroid 6；Sliding bearing 20 has labyrinth type oil storage tank, can protect for a long time
Lubricating grease is deposited, reduces the running resistance of valve rod 22;Hold-down grid 18, the contact surface of filler pressing sleeve 19 are sphere, are farthest subtracted
The uneven stressing conditions of compression of filler 25 are lacked.
Preferred embodiment of the present utility model is the foregoing is only, not limiting protection model of the present utility model
Enclose, it is all within the spirit and principles of the utility model, any modification for being made, equivalent substitution, it is all contained in the utility model
Protection domain within.
Claims (4)
- A kind of 1. high-temp. fixed ball valve, it is characterised in that：It includes middle body（1）, soket head cap screw（2）, lower valve rod（3）, glide Dynamic bearing（4）, spirotallic gasket（5）, spheroid（6）, spring base（7）, spring（8）, foot stool（9）, stud（10）, nut（11）, it is soft Property carbon seal ring（12）, valve seat（13）, Petrochemical Pipe Joints（14）, support（15）, flat key（16）, worm gear drive（17）, fill out Expect pressing plate（18）, filler pressing sleeve（19）, sliding bearing（20）, thrust washer（21）, valve rod（22）, stuffing box（23）, straight pin （24）, filler（25）；The Petrochemical Pipe Joints（14）Pass through stud（10）, nut（11）Symmetrically it is arranged on middle body（1）Left and right end face On, the foot stool（9）It is fixed on Petrochemical Pipe Joints（14）On；The lower valve rod（3）Through middle body（1）Lower end, and by interior Hex screw（2）It is fixed on middle body（1）On, lower valve rod（3）The valve rod projection of setting（31）Insert spheroid（6）The spheroid of setting is determined Position groove（61）In, and valve rod projection（31）With spheroid（6）Between be provided with properties of journal bearing lubricated（4）；The Petrochemical Pipe Joints （14）With spheroid（6）Between be disposed with spring（8）, spring base（7）, flexible graphite sealing ring（12）, valve seat（13）；It is described Stuffing box（23）With middle body（1）Between be provided with spirotallic gasket（5）, stuffing box（23）Pass through soket head cap screw（2）In being fixed on Body（1）On, and pass through straight pin（24）With middle body（1）Carry out cooperation positioning, stuffing box（23）Spheroid is inserted in bottom（6）Set Sphere orientation groove（61）In；Valve rod（22）Sequentially pass through hold-down grid（18）, filler pressing sleeve（19）, filler（25）, stuffing box （23）And insert spheroid（6）The Sphere orientation groove of setting（61）In, valve rod（22）Bottom and stuffing box（23）Contact position is provided with Thrust washer（21）, valve rod（22）Outer circumference surface and stuffing box（23）Inner peripheral surface contact position is provided with sliding bearing（20）, valve Bar（22）Upper end passes through flat key（16）With worm gear drive（17）It is connected；The support（15）Lower end passes through stud（10）, nut （11）With stuffing box（23）It is connected, support（15）Upper end passes through stud（10）, nut（11）With worm gear drive（17）It is connected.
- A kind of 2. high-temp. fixed ball valve according to claim 1, it is characterised in that：The spring（8）Compression travel surpass The flexible graphite sealing ring crossed at a temperature of 17.6MPa pressure and 450 °C（12）Compress variation and spheroid（6）, spring base （7）, valve seat（13）Elastic deformation amount's sum.
- A kind of 3. high-temp. fixed ball valve according to claim 1, it is characterised in that：The sliding bearing（20）With labyrinth Formula oil storage tank.
- A kind of 4. high-temp. fixed ball valve according to claim 1, it is characterised in that：The hold-down grid（18）, filler pressure Set（19）Contact surface be sphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720245849.4U CN206669019U (en) | 2017-03-14 | 2017-03-14 | A kind of high-temp. fixed ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720245849.4U CN206669019U (en) | 2017-03-14 | 2017-03-14 | A kind of high-temp. fixed ball valve |
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| Publication Number | Publication Date |
|---|---|
| CN206669019U true CN206669019U (en) | 2017-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720245849.4U Active CN206669019U (en) | 2017-03-14 | 2017-03-14 | A kind of high-temp. fixed ball valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109931430A (en) * | 2019-04-15 | 2019-06-25 | 苏州悦达阀门有限公司 | A kind of high pressure valve valve rod anti-roll back device |
-
2017
- 2017-03-14 CN CN201720245849.4U patent/CN206669019U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109931430A (en) * | 2019-04-15 | 2019-06-25 | 苏州悦达阀门有限公司 | A kind of high pressure valve valve rod anti-roll back device |
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