CN207316217U - High temperature high pressure valve bellows and its component - Google Patents
High temperature high pressure valve bellows and its component Download PDFInfo
- Publication number
- CN207316217U CN207316217U CN201720309131.7U CN201720309131U CN207316217U CN 207316217 U CN207316217 U CN 207316217U CN 201720309131 U CN201720309131 U CN 201720309131U CN 207316217 U CN207316217 U CN 207316217U
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- bellows
- valve rod
- lower valve
- groove
- pad
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- 238000005253 cladding Methods 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 230000002929 anti-fatigue Effects 0.000 abstract description 3
- 238000003466 welding Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000002360 explosive Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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- Diaphragms And Bellows (AREA)
Abstract
It the utility model is related to a kind of high temperature high pressure valve bellows and its component, including bellows, lower valve rod, pad and spool, wherein, the bellows cladding is arranged on the outside of lower valve rod, the big cylindrical casing of bellows is coated on the outside of the middle bench of lower valve rod, make the end face of the big cylindrical casing of bellows equal with the outerplanar edge step of the middle bench of lower valve rod, and pass through welded seal；Pad is coated on outside lower valve rod, and the aperture of bushing is engaged with the small column casing of bellows, and making small column casing, the flange protrusions position of aperture of the end face of small column casing with padding is equal, and passes through welded seal through the aperture of pad；Spool is locked on lower valve rod by thread fitting, is conducive to improve the fatigue strength of bellows and weld seam, is increased service life, considerably increase the stability and reliability of weld seam, improves anti-fatigue performance and service life.
Description
Technical field
The design of high temperature and pressure Bellows valve and manufacture are the utility model is related to, is widely used in higher to seal request
In high temperature and pressure pipeline, it is poisonous, is harmful to, has high temperature and pressure bellows stop valve in radioactivity and inflammable and explosive medium pipeline
In key elastic component.
Background technology
Widely applied valve mechanism is all to realize anti-leakage sealing by upper filler, since filler rubbed, is shaken, temperature
The influence of the factor such as degree, pressure and environment, there is a possibility that leakage in structure, and it is poisonous, inflammable, explosive, have radioactivity
Leakage is not allow for Deng the medium to damage to safety, environment and health, Bellows valve is exactly a kind of very safe
Reliable product, wherein bellows are kernel components crucial in the product, it is sealed with components welding, since valve is in height
Surely change there are position under warm high pressure conditions and in keying motion process, surely change needs bellows to have for this flexible position
The feature of multilayer thin-walled, therefore this metal bellows structure and welding structure, for the application under high-temperature high-pressure state, directly
Connect the fatigue performance for being related to bellows and its both ends and weld seam after components welding and service life is most important.
Utility model content
The utility model proposes a kind of high temperature high pressure valve bellows and its component regarding to the issue above, is conducive to improve
The fatigue strength of bellows and weld seam, increases service life, considerably increases the stability and reliability of weld seam, improves antifatigue
Performance and used life.
Specific technical solution is as follows：
High temperature high pressure valve bellows, bellows is compressing by thin wall alloy seamless pipe, and the both ends of bellows are respectively
Big cylindrical casing and small column casing, the outside diameter d 1 of big cylindrical casing are equal to the outside diameter d 2 of bellows, the outside diameter of small column casing
For d3, d1 ＞ d3.
High temperature high pressure valve bellows component, including bellows, lower valve rod, pad and spool, wherein, the bellows bag
The outside for being arranged on lower valve rod is covered, the big cylindrical casing of bellows is coated on the outside of the middle bench of lower valve rod, makes bellows
Big cylindrical casing end face it is equal with the outerplanar edge step of the middle bench of lower valve rod, and pass through welded seal；Pad
It is coated on outside lower valve rod, the aperture of bushing is engaged with the small column casing of bellows, makes small column casing through pad
Aperture, the flange protrusions position of aperture of the end face of small column casing with padding is equal, and passes through welded seal；Spool passes through spiral shell
Line, which locks, to be fixed on lower valve rod.
Above-mentioned high temperature high pressure valve bellows component, wherein, lower valve rod is separated into by the lower valve rod by middle bench
Lower valve rod top and lower valve rod lower part, the end face center on lower valve rod top are equipped with the first groove that section is circular arc row structure, in
The upper surface of portion's step is equipped with the second groove for being recessed inwardly, forms edge step on middle bench, lower valve rod top it is outer
Wall is equipped with the 3rd groove that a ring cross-section is arc-shaped structure, and the 3rd groove is between the first groove and the second groove；In
The outer wall of portion's step is engaged with the inner wall of the big cylindrical casing of bellows, and the length of middle bench is L1, the great circle of bellows
The inside clear length of column sleeve pipe is L2, L2-0.1mm≤L1≤L2+0.3mm；Lower valve rod lower part is polished rod structure, lower valve rod lower part
Bottom be equipped with fixing groove, be equipped with internal thread in fixing groove, the internal thread in fixing groove is engaged with the external screw thread on spool.
Above-mentioned high temperature high pressure valve bellows component, wherein, the pad is cylindrical structure, and aperture is equipped with pad,
Aperture is made of interconnected first passage and second channel, and first passage and second channel are coaxially disposed, first passage
Internal diameter d4 is more than the outside diameter d 5 of second channel, and the depth of first passage is h1, and the height of pad is h2, h1 ＜ h2 ÷ 2；Pad position
A circle square groove is equipped with the end face of first passage side, is equipped with sealing ring in square groove, the width L3 of square groove is 1.5~
3mm, depth L4 are 1~2mm, and the thickness of sealing ring is L5, L5-L4=0.3-0.5mm；Pad is positioned at the end of second channel side
Face is equipped with a circle V-shaped groove, the distance between V-shaped groove inner edge and second channel L6=1mm, the depth L7=1mm of V-shaped groove.
Above-mentioned high temperature high pressure valve bellows component, wherein, matching somebody with somebody between the inner wall of the bellows and lower valve rod lower part
Gap >=0.5mm is closed, the inside clear length of the small column casing of bellows is L8, h2-0.1mm≤L8≤h2+0.3mm.
The beneficial effects of the utility model are：
The utility model changes the welding position of bellows and lower valve rod and pad, make bellows elastic deformation position and
Welding position separates, and is conducive to improve the fatigue strength of bellows and weld seam, increases service life.
The force way of weld seam is changed, makes bead direction inconsistent with Impact direction, considerably increases the stabilization of weld seam
Property and reliability, improve anti-fatigue performance and service life.
Brief description of the drawings
Fig. 1 is the utility model bellows component sectional view.
Fig. 2 is the utility model bellows sectional view.
Fig. 3 is the utility model lower valve rod sectional view.
Fig. 4 is the utility model A-A sectional views.
Fig. 5 pads sectional view for the utility model.
Fig. 6 is the utility model sealing ring sectional view.
Embodiment
To make the technical solution of the utility model become apparent from clearly, below in conjunction with the accompanying drawings to the utility model into advance one
Step description, any technical characteristic to technical solutions of the utility model carry out the scheme that equivalencing is drawn with conventional reasoning and fall
Enter scope of protection of the utility model.
Reference numeral
Big cylindrical casing 1, small column casing 2, bellows 3, lower valve rod 4, pad 5, spool 6, middle bench 7, aperture 8,
Lower valve rod top 9, lower valve rod lower part 10, the first groove 11, the second groove 12, the 3rd groove 13, fixing groove 14, internal thread 15,
First passage 16, second channel 17, square groove 18, V-shaped groove 19, sealing ring 20.
A kind of high temperature high pressure valve bellows as shown in the figure, bellows is compressing by multilayer thin-walled alloy seamless pipe, ripple
The both ends of line pipe are respectively big cylindrical casing 1 and small column casing 2, and the outside diameter d 1 of big cylindrical casing is equal to the outside diameter of bellows
D2, the outside diameter of small column casing is d3, d1 ＞ d3.
Use the bellows component of the bellows, including bellows 3, lower valve rod 4, pad 5 and spool 6, the bellows
Cladding is arranged on the outside of lower valve rod, and the big cylindrical casing of bellows is coated on the outside of the middle bench 7 of lower valve rod, makes ripple
The end face of the big cylindrical casing of pipe is equal with the outerplanar edge step of the middle bench of lower valve rod, and passes through welded seal；Lining
Pad is coated on outside lower valve rod, and the aperture 8 of bushing is engaged with the small column casing of bellows, makes small column casing through pad
Aperture, the flange protrusions position of the aperture of the end face of small column casing with padding is equal, and passes through welded seal；Spool passes through
Thread fitting is locked on lower valve rod；
Lower valve rod is separated into lower valve rod top 9 and lower valve rod lower part 10, lower valve rod by the lower valve rod by middle bench
The end face center on top is equipped with the first groove 11 that section is circular arc row structure, and the upper surface of middle bench is equipped with what is be recessed inwardly
Second groove 12, forms edge step on middle bench, and the outer wall on lower valve rod top is arc-shaped knot equipped with a ring cross-section
3rd groove 13 of structure, the 3rd groove is between the first groove and the second groove；The outer wall of middle bench and bellows it is big
The inner wall of cylindrical casing is engaged, and the length of middle bench is L1, and the inside clear length of the big cylindrical casing of bellows is L2,
L2-0.1mm≤L1≤L2+0.3mm；Lower valve rod lower part is polished rod structure, and the bottom of lower valve rod lower part is equipped with fixing groove 14, fixed
It is equipped with internal thread 15 in groove, the internal thread in fixing groove is engaged with the external screw thread on spool.
The pad is cylindrical structure, aperture is equipped with pad, aperture is by interconnected first passage 16 and second
Passage 17 forms, and first passage and second channel are coaxially disposed, and the internal diameter d4 of first passage is more than the outside diameter d 5 of second channel, the
The depth of one passage is h1, and the height of pad is h2, h1 ＜ h2 ÷ 2；Pad is equipped with one positioned at the end face of first passage side
Square groove 18 is enclosed, is equipped with sealing ring 20 in square groove, the width L3 of square groove is 1.5~3mm, depth L4 is 1~2mm, is sealed
The thickness of circle is L5, L5-L4=0.3-0.5mm；Pad is equipped with a circle V-shaped groove 19, V-arrangement positioned at the end face of second channel side
The distance between groove inner edge and second channel L6=1mm, the depth L7=1mm of V-shaped groove.
Fit clearance >=0.5mm between the inner wall of the bellows and lower valve rod lower part, the small column casing of bellows
Inside clear length be L8, h2-0.1mm≤L8≤h2+0.3mm.
Lower valve rod top coordinates with upper valve rod, and rolling connection is carried out by big steel ball, small ball；Big steel ball is arranged on first
In groove, the radian of the first groove is more than the radian of big steel ball, and the 3rd groove is identical with upper valve rod inner wall relevant position
Size arc groove fills small ball after coordinating, with active connection upper valve rod；
After bellows and its component are connected with upper valve rod installation, then it is installed to inside valve deck, rotation upper valve rod drives ripple
Pipe and its component are promoted to topmost, after pad is entered the specific location inside valve deck, carry out the installation of valve deck and valve body.
Claims (5)
1. high temperature high pressure valve bellows, it is characterized in that, bellows is compressing by thin wall alloy seamless pipe, the both ends of bellows
Respectively big cylindrical casing and small column casing, the outside diameter d 1 of big cylindrical casing are equal to the outside diameter d 2 of bellows, small column casing
Outside diameter be d3, d1 ＞ d3.
2. high temperature high pressure valve bellows component, including bellows, lower valve rod, pad and spool, it is characterized in that, the bellows
Cladding is arranged on the outside of lower valve rod, and the big cylindrical casing of bellows is coated on the outside of the middle bench of lower valve rod, makes ripple
The end face of the big cylindrical casing of pipe is equal with the outerplanar edge step of the middle bench of lower valve rod, and passes through welded seal；Lining
Pad is coated on outside lower valve rod, and the aperture of bushing is engaged with the small column casing of bellows, makes small column casing through pad
Aperture, the flange protrusions position of the aperture of the end face of small column casing with padding is equal, and passes through welded seal；Spool passes through
Thread fitting is locked on lower valve rod.
3. high temperature high pressure valve bellows component as claimed in claim 2, it is characterized in that, the lower valve rod passes through middle bench
Lower valve rod is separated into lower valve rod top and lower valve rod lower part, the end face center on lower valve rod top is circular arc row structure equipped with section
The first groove, the upper surface of middle bench is equipped with the second groove being recessed inwardly, edge step formed on middle bench, under
The outer wall on valve rod top is equipped with the 3rd groove that a ring cross-section is arc-shaped structure, and the 3rd groove is located at the first groove and second
Between groove；The outer wall of middle bench is engaged with the inner wall of the big cylindrical casing of bellows, and the length of middle bench is L1, ripple
The inside clear length of the big cylindrical casing of line pipe is L2, L2-0.1mm≤L1≤L2+0.3mm；Lower valve rod lower part is polished rod structure,
The bottom of lower valve rod lower part is equipped with fixing groove, is equipped with internal thread in fixing groove, the outer spiral shell on internal thread and spool in fixing groove
Line is engaged.
4. high temperature high pressure valve bellows component as claimed in claim 2, it is characterized in that, the pad is cylindrical structure,
Aperture is equipped with pad, aperture is made of interconnected first passage and second channel, and first passage and second channel are coaxial
Setting, the internal diameter d4 of first passage is more than the outside diameter d 5 of second channel, and the depth of first passage is h1, and the height of pad is h2,
H1 ＜ h2 ÷ 2；Pad is equipped with a circle square groove positioned at the end face of first passage side, and sealing ring is equipped with square groove, square
The width L3 of groove is 1.5~3mm, depth L4 is 1~2mm, and the thickness of sealing ring is L5, L5-L4=0.3-0.5mm；Pad position
A circle V-shaped groove, the distance between V-shaped groove inner edge and second channel L6=1mm, V-arrangement are equipped with the end face of second channel side
The depth L7=1mm of groove.
5. high temperature high pressure valve bellows component as claimed in claim 3, it is characterized in that, the inner wall and lower valve of the bellows
Fit clearance >=0.5mm between bar lower part, the inside clear length of the small column casing of bellows are L8, h2-0.1mm≤L8≤
h2+0.3mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720309131.7U CN207316217U (en) | 2017-03-28 | 2017-03-28 | High temperature high pressure valve bellows and its component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720309131.7U CN207316217U (en) | 2017-03-28 | 2017-03-28 | High temperature high pressure valve bellows and its component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207316217U true CN207316217U (en) | 2018-05-04 |
Family
ID=62436762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720309131.7U Active CN207316217U (en) | 2017-03-28 | 2017-03-28 | High temperature high pressure valve bellows and its component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207316217U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838454A (en) * | 2017-03-28 | 2017-06-13 | 江苏星河阀门有限公司 | High temperature high pressure valve bellows and its component |
| CN112128465A (en) * | 2020-09-24 | 2020-12-25 | 北京前沿动力科技股份有限公司 | Supercritical carbon dioxide regulating valve rod sealing structure |
| WO2021008468A1 (en) * | 2019-07-12 | 2021-01-21 | 浙江达柏林阀门有限公司 | Anti-scaling spool |
-
2017
- 2017-03-28 CN CN201720309131.7U patent/CN207316217U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838454A (en) * | 2017-03-28 | 2017-06-13 | 江苏星河阀门有限公司 | High temperature high pressure valve bellows and its component |
| WO2021008468A1 (en) * | 2019-07-12 | 2021-01-21 | 浙江达柏林阀门有限公司 | Anti-scaling spool |
| CN112128465A (en) * | 2020-09-24 | 2020-12-25 | 北京前沿动力科技股份有限公司 | Supercritical carbon dioxide regulating valve rod sealing structure |
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