CN203272818U - Balanced cage type single-seat adjusting valve - Google Patents
Balanced cage type single-seat adjusting valve Download PDFInfo
- Publication number
- CN203272818U CN203272818U CN2013202408247U CN201320240824U CN203272818U CN 203272818 U CN203272818 U CN 203272818U CN 2013202408247 U CN2013202408247 U CN 2013202408247U CN 201320240824 U CN201320240824 U CN 201320240824U CN 203272818 U CN203272818 U CN 203272818U
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- China
- Prior art keywords
- valve
- spool
- type single
- ring
- seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 210000004907 gland Anatomy 0.000 claims abstract description 20
- 238000012856 packing Methods 0.000 claims abstract description 20
- 238000001125 extrusion Methods 0.000 claims abstract description 15
- 238000003825 pressing Methods 0.000 claims abstract description 11
- 239000000945 filler Substances 0.000 claims description 31
- 238000007789 sealing Methods 0.000 claims description 20
- 230000001105 regulatory effect Effects 0.000 claims description 17
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 4
- 229910000753 refractory alloy Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 229910001090 inconels X-750 Inorganic materials 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002360 explosive Substances 0.000 abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 abstract description 3
- 239000001301 oxygen Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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Abstract
A balanced cage type single-seat adjusting valve comprises a valve body and a valve cap, wherein the valve body and the valve cap are connected with each other through a bolt; an inner hole is formed in the valve cap. The balanced cage type single-seat adjusting valve is characterized in that a lower packing seat, a packing spring, an upper packing seat, a packing component, a packing pressing sleeve and a pressure plate are mounted in the inner hole from the bottom up in sequence; a groove is arranged on the outer ring of the valve cap, the outer ring is in contact with the valve body, and an O-shaped ring is arranged in the groove; one end of a valve rod component is arranged in the inner hole in the valve cap; the other end of the valve rod component is arranged in a valve cage; the valve rod component comprises a valve core, a valve rod, a valve core gland, a back ring, an anti-extrusion ring and a seal ring; the valve core and the valve rod are in threaded connection with each other and are then fixed through a pin; a step is formed on the valve core; the seal ring, the anti-extrusion ring and the back ring are arranged on the step from the bottom up in sequence; the valve core gland is compressed by a screw and is fixed on the valve core. The balanced cage type single-seat adjusting valve can effectively eliminate potential hazards of media inner leakage and outer leakage, and is particularly suitable for inflammable and explosive media such as oxygen.
Description
Technical field
The utility model relates to a kind of single-seat adjusting valve, relates in particular to a kind of balance cage type single seat regulating valve, belongs to technical field of valve manufacturing.
Background technique
The leakage of valve not only affects its working life, and more serious threat is to the even personal safety of operation of industrial system, especially uses under the inflammable and explosive danger medium such as oxygen, must eliminate the leakage hidden danger of valve.The leakage main manifestations of valve is both ways: interior leakage and leaking outside.For the balance cage type single seat regulating valve, the leakage point of interior leakage has three places: 1. spool and valve base sealing place; 2. spool and valve cage sealing place 3. valve cages and valve seal place; The leakage point that leaks outside has two places: 1. valve body and valve bonnet seal place; 2. filler place.Balance cage type single seat regulating valve of the prior art is preventing there is following problem aspect dielectric leakage:
1) leak in spool and valve cage sealing place medium.
The following structure of the many employings of the spool of balance cage type single seat regulating valve of the prior art and the sealing between valve cage: seal ring set is loaded on the boss of valve core outer surface, support ring is pressed on seal ring, again retaining ring is packed in the spool draw-in groove, utilize retaining ring to come press seal ring and support ring (visible number of patent application 200920251645.7).Because the retaining ring cross section is rectangle, its half spool draw-in groove of will packing into, second half plays pressuring action.When the spool knee-action, retaining ring is born very large extruding and shearing force, is easy to cause retaining ring come off from draw-in groove or be out of shape, and loses the compression effect, causes interior leakage.
2) valve body and valve bonnet seal place medium leaks outside.
The valve gap place of balance cage type single seat regulating valve of the prior art has two places to seal: valve cage and valve gap place, valve body and valve gap place.The sealing effect difficulty that will guarantee simultaneously this two place is larger.Valve body and valve gap place only adopt one group of gasket seal, can not eliminate the hidden danger that leaks outside.
3) filler place medium leaks outside.
Only rely on one group of filler to guarantee sealing, because being stressed of each filler in filler assembly is inhomogeneous, and passes in time filler and can produce stress relaxation, easily cause flowing medium to leak outside.
Summary of the invention
The purpose of this utility model is to overcome described one or more shortcomings of background technique, and a kind of balance cage type single seat regulating valve is provided, and this valve can effectively be eliminated the interior leakage of medium and/or the hidden danger that leaks outside, and is particularly useful for the inflammable and explosive media such as oxygen.
The utility model is achieved through the following technical solutions:
A kind of balance cage type single seat regulating valve comprises: valve body, valve gap, and described valve body, valve gap are bolted; Be provided with step in valve body, valve seat is placed on the interior step of valve body, and valve cage is placed between valve seat, valve gap; Between described valve body, valve gap and valve cage, be equipped with sealing gasket between valve body step and valve seat; Described valve gap is provided with endoporus;
It is characterized in that: lower filler seat, packing spring, upper filler seat, filler assembly, filler pressing sleeve and pressing plate are housed in described endoporus from top to bottom successively; The outer ring that contacts with valve body on valve gap also is provided with groove, built-in O type circle; Valve rod assembly one end is placed in the valve gap endoporus, and the other end is placed in valve cage, and described valve rod assembly comprises spool, valve rod, spool gland, the back of the body ring, anti-extrusion rings and seal ring; Spool, valve rod adopt to be threaded and fix with pin; Described spool is provided with step, and seal ring, anti-extrusion rings, back of the body ring are positioned on step from top to bottom successively, and screw in compression spool gland also is fixed on spool.
Preferably, described anti-extrusion rings is upper and lower two inclined wedge-shaped split-type structurals.
Preferably, described packing spring is cylindroid helicalcoil compression spring.
Preferably, the described spool gland disc-shaped structure that is hollow.
Preferably, the screw on described spool gland is socket head screw, and is preferably uniform along the spool gland.
Preferably, described packing spring material is PH Stainless Steel 631, perhaps refractory alloy INconel X-750.
The effect that the utility model is useful is:
1) the O type circle at valve gap place and sealing gasket form double sealing structure, eliminate the hidden danger that medium leaks outside from valve body, valve gap joint.
2) packing spring is set below filler assembly, to the lax dynamic compensation of filler, eliminates the filler place medium hidden danger that leaks outside.
3) adopt screw to fix the spool gland, simple in structure, connect reliably, eliminated the hidden danger that in the conventional construction, retaining ring comes off or is out of shape from draw-in groove, prevent the interior leakage between spool, valve cage.And/or
4) anti-extrusion rings is upper and lower two inclined wedge-shaped split-type structurals, under the pressure medium effect, can produce along the inclined-plane relative slippage, thereby auto-compensation spool and valve cage gap further prevent the interior leakage between spool, valve cage.
Description of drawings
Fig. 1 is the structural drawing of the disclosed balance cage type single seat regulating valve of the utility model.
1. filler seat 9. filler assembly 10. filler pressing sleeve 11. pressing plate 12. valve base sealing pad 13. valve seal pad 14.O type circles on 6. times filler seats of valve body 2. valve gap 3. valve seat 4. valve cage 5. valve rod assemblies, 7. packing springs 8..
Fig. 2 is the partial enlarged drawing of valve rod assembly in Fig. 1.
5-1. spool, 5-2. valve rod, 5-3. pin, 5-4. spool gland, the 5-5. back of the body encircle,
5-6. anti-extrusion rings, 5-7. seal ring, 5-8. socket head screw.
Embodiment
Following embodiment is described further the utility model by reference to the accompanying drawings, in any case but can not be interpreted as restriction of the present utility model:
As shown in Figure 1, 2, a kind of balance cage type single seat regulating valve comprises: valve body 1, valve gap 2, and described valve body 1, valve gap 2 are bolted; Be provided with step in valve body 1, valve seat 3 is placed on the interior step of valve body, and valve cage 4 is placed between valve seat 3, valve gap 2; Described valve body 1, valve gap 2 and 4 of valve cages are provided with sealing gasket 13, are provided with sealing gasket 12 between valve body step and valve seat 3; Described valve gap 2 is provided with endoporus, and lower filler seat 6, packing spring 7, upper filler seat 8, filler assembly 9, filler pressing sleeve 10 and pressing plate 11 are housed in endoporus from top to bottom successively; Wherein, packing spring 7 is cylindroid helicalcoil compression spring, can be to the lax dynamic compensation of filler.Described packing spring material is PH Stainless Steel 631.The outer ring that contacts with valve body on valve gap 2 is provided with groove, is built-in with O type circle 14, and O type circle and sealing gasket 13 forms double sealing structures herein, effectively eliminates the medium hidden danger that leaks outside.
Embodiment 2
As shown in Figure 1, 2, a kind of balance cage type single seat regulating valve comprises: valve body 1, valve gap 2, and described valve body 1, valve gap 2 are bolted; Be provided with step in valve body 1, valve seat 3 is placed on the interior step of valve body, and valve cage 4 is placed between valve seat 3, valve gap 2; Described valve body 1, valve gap 2 and 4 of valve cages are provided with sealing gasket 13, are provided with sealing gasket 12 between valve body step and valve seat 3; Described valve gap 2 is provided with endoporus, and lower filler seat 6, packing spring 7, upper filler seat 8, filler assembly 9, filler pressing sleeve 10 and pressing plate 11 are housed in endoporus from top to bottom successively; Wherein, packing spring 7 is cylindroid helicalcoil compression spring, can be to the lax dynamic compensation of filler.Described packing spring material is refractory alloy INconelX-750.The outer ring that contacts with valve body on valve gap 2 is provided with groove, is built-in with O type circle 14, and O type circle and sealing gasket 13 forms double sealing structures herein, effectively eliminates the medium hidden danger that leaks outside.
Claims (6)
1. a balance cage type single seat regulating valve comprises: valve body (1), valve gap (2), and described valve body (1), valve gap (2) are bolted; Valve body is provided with step in (1), and valve seat (3) is placed on the interior step of valve body, and valve cage (4) is placed between valve seat (3), valve gap (2); Be provided with sealing gasket (13) between described valve body (1), valve gap (2) and valve cage (4), be provided with sealing gasket (12) between valve body step and valve seat (3); Described valve gap (2) is provided with endoporus;
It is characterized in that: lower filler seat (6), packing spring (7), upper filler seat (8), filler assembly (9), filler pressing sleeve (10) and pressing plate (11) are housed in described endoporus from top to bottom successively; The upper outer ring that contacts with valve body of valve gap (2) is provided with groove, is built-in with O type circle (14); Valve rod assembly (5) one ends are placed in valve gap (2) endoporus, and an end is placed in valve cage (4); Described valve rod assembly (5) comprises spool (5-1), valve rod (5-2), spool gland (5-4), back of the body ring (5-5), anti-extrusion rings (5-6) and seal ring (5-7); Spool (5-1), valve rod (5-2) adopt to be threaded uses pin (5-3) fixing again; Described spool (5-1) is provided with step, and seal ring (5-7), anti-extrusion rings (5-6), back of the body ring (5-5) are positioned on step from top to bottom successively, and screw (5-8) pressed spool gland (5-4) also is fixed on spool.
2. balance cage type single seat regulating valve described according to claims 1, is characterized in that, described anti-extrusion rings (5-6) is upper and lower two inclined wedge-shaped split-type structurals.
3. balance cage type single seat regulating valve described according to claims 1 or 2, is characterized in that, described packing spring (7) is cylindroid helicalcoil compression spring.
4. balance cage type single seat regulating valve described according to claims 1 or 2, is characterized in that, described spool gland (5-4) is the disc-shaped structure of hollow.
5. balance cage type single seat regulating valve described according to claims 1 or 2, is characterized in that, the screw (5-8) on described spool gland (5-4) is socket head screw.
6. balance cage type single seat regulating valve described according to claims 1 or 2, is characterized in that, described packing spring (7) material is PH Stainless Steel 631, perhaps refractory alloy INconel X-750.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202408247U CN203272818U (en) | 2013-05-07 | 2013-05-07 | Balanced cage type single-seat adjusting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202408247U CN203272818U (en) | 2013-05-07 | 2013-05-07 | Balanced cage type single-seat adjusting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203272818U true CN203272818U (en) | 2013-11-06 |
Family
ID=49503231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202408247U Expired - Lifetime CN203272818U (en) | 2013-05-07 | 2013-05-07 | Balanced cage type single-seat adjusting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203272818U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867728A (en) * | 2014-03-28 | 2014-06-18 | 株洲南方阀门股份有限公司 | Reheater water spraying regulating valve |
| CN104653796A (en) * | 2013-11-22 | 2015-05-27 | 江苏神通阀门股份有限公司 | Circulation pipeline adjusting valve of boiler |
| CN107461503A (en) * | 2016-06-03 | 2017-12-12 | 上海范雨实业有限公司 | A kind of special regulating valve of HTHP |
| CN108386547A (en) * | 2017-02-02 | 2018-08-10 | 费希尔控制产品国际有限公司 | Modular valve blocks trim assemblies for control valve |
-
2013
- 2013-05-07 CN CN2013202408247U patent/CN203272818U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653796A (en) * | 2013-11-22 | 2015-05-27 | 江苏神通阀门股份有限公司 | Circulation pipeline adjusting valve of boiler |
| CN103867728A (en) * | 2014-03-28 | 2014-06-18 | 株洲南方阀门股份有限公司 | Reheater water spraying regulating valve |
| CN107461503A (en) * | 2016-06-03 | 2017-12-12 | 上海范雨实业有限公司 | A kind of special regulating valve of HTHP |
| CN108386547A (en) * | 2017-02-02 | 2018-08-10 | 费希尔控制产品国际有限公司 | Modular valve blocks trim assemblies for control valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |
|
| CX01 | Expiry of patent term |