CN207333737U - Double spool guide's cage type regulating valve - Google Patents
Double spool guide's cage type regulating valve Download PDFInfo
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- CN207333737U CN207333737U CN201721257556.4U CN201721257556U CN207333737U CN 207333737 U CN207333737 U CN 207333737U CN 201721257556 U CN201721257556 U CN 201721257556U CN 207333737 U CN207333737 U CN 207333737U
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Abstract
Double spool guide's cage type regulating valve, small valve core and big valve core are also set in its valve cage, small valve core is connected with valve rod, small valve core is movable in big valve core, big valve core is movable in valve cage, seal and coordinate when big valve core is contacted with valve seat, pilot hole is set on the outer wall of big valve core to connect with its inner cavity, first guide bracket is also set in the inner cavity of big valve core, it is connection inner cavity and the leader channel of valve body cavity of resorption among first guide bracket, sealing coordinates when small valve core is touched with guide's seated connection, small valve core limiting section is set on big valve core, small valve core limiting section is located at the top of small valve core, the pre-tightening apparatus of effect small valve core upwards is also set in big valve core；Double spool guide cage type regulating valve is using small valve core and big valve core segmentation cooperating, pressure medium increases valve base sealing power before making full use of valve, small valve core, big valve core and first guide bracket, valve seat fitted seal, sealing surface is from temperature limiting, small valve core make valve after opening before, valve opening is easy in medium connection after valve, the requirement to Actuator configuration is reduced, reduces complete machine manufacture cost.
Description
Technical field
Double spool guide's cage type regulating valve is the utility model is related to, is to be widely used in high temperature, high pressure, heavy caliber operating mode,
Pilot valve is able to ensure that the leakage class of regulating valve reaches V grade or VI grade, realizes the tight technological requirement for adjusting shut-off, uses
In the adjusting and control of technological parameter, belong to instrument control field.
Background technology
At present in the industries such as oil, petrochemical industry, power plant, pharmacy, new energy, coal chemical industry, fine chemistry industry, high temperature, high pressure operating mode
To medium or heavy caliber regulating valve of the inside nominal diameter between DN80mm ~ DN400mm, leakage class need V grade or VI grade or even
Zero leakage is to ensure the demand of continuous production process.
Though single-seat adjusting valve limits from high temperature, out-of-balance force and provide needed for valve seat that High Pressure Difference produces are overcome
Sealing force, Actuator configuration increase 2-3 grades be also difficult to meet the requirements.
The actuator of cage type regulating valve configuration is balanced, the sealing force needed for valve seat need to be only provided, actuator need to only increase 1-2
Shelves；But sealing structure uses soft graphite or metal C-shaped ring on high temperature spool, both sealing effects are bad, to realize
V grade of leakage class is extremely difficult.
So uneven single-seat adjusting valve and balance cage type regulating valve can not all meet this working condition requirement.
Utility model content
In view of technical problem present in background technology, the technical problem that the utility model is solved aims to provide one kind just
In the double spool guide's cage type regulating valve opened, valve base sealing power is strong, leakage class is higher.
In order to solve the above technical problems, the utility model adopts the following technical scheme：Double spool guide's cage type regulating valve,
Include valve body, valve seat, valve cage and valve rod, valve seat is set in valve body, and valve cage is located at the top of valve seat, and valve cage is equipped with flow window
Mouthful, it is characterised in that：Small valve core and big valve core are additionally provided with valve cage, small valve core is connected with valve rod, and small valve core is matched in big valve core
Inner cavity in axial activity, big valve core is arranged in valve cage axial activity, sealing cooperation, big valve core when big valve core is contacted with valve seat
Outer wall connected equipped with pilot hole with inner cavity, also there is first guide bracket, guide's seat is in the inner cavity of big valve core, first on big valve core
Sealing coordinates when among guide bracket to connect the leader channel of inner cavity and valve body cavity of resorption, small valve core and tactile guide's seated connection, on big valve core
Equipped with small valve core limiting section, small valve core limiting section is located at the top of small valve core, is additionally provided with big valve core and acts on small valve core upwards
Pre-tightening apparatus.
Having on small valve core makes the through hole that inner cavity is connected with valve cage epicoele, has stream between small valve core limiting section and valve rod
Road.
The spacing pressing plate for serving as small valve core limiting section is set on big valve core, and the mesoporous of spacing pressing plate is passed through for valve rod, mesoporous
It is runner between valve rod, the outer wall of big valve core is equipped with step, and guide ring sets in step and is pressed on big valve by spacing pressing plate
On core, the mesoporous of spacing pressing plate is stepped hole.
Small valve core and valve-stem integrated structure.
Pre-tightening apparatus is spring, and spring is arranged on the lower section of small valve core, and spring pre-tightening is between small valve core and first guide bracket.
Valve cage, the mating part of big valve core are cylindrical shape, and the inner cavity of big valve core is also cylindrical shape.
In valve cage during axial activity, big valve core coordinates big valve core with valve cage flow-rate adjustment.
Flow window is evenly arranged a circle on valve cage, and pilot hole is uniformly arranged a circle in the outer wall of big valve core, and through hole exists
A circle is uniformly arranged on small valve core.
The beneficial effects of the utility model are that double spool guide cage type regulating valve is matched somebody with somebody using small valve core and big valve core segmentation
Work is closed, makes full use of pressure medium increase valve base sealing power before valve, leakage class reaches V grade or VI grade or even zero leakage, small
Spool, big valve core and first guide bracket, valve seat fitted seal, its sealing surface from temperature limiting, before making valve after being opened by small valve core,
Valve opening is easy in medium connection after valve, reduces the requirement to Actuator configuration, reduces complete machine manufacture cost.Therefore, this practicality
It is new that there is substantive distinguishing features and progress compared with prior art.
Brief description of the drawings
The embodiment of the utility model and the related details and operation principle of embodiment are described below in conjunction with the accompanying drawings.
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is valve body inner structure schematic diagram.
Embodiment
Referring to attached drawing, in present embodiment, double spool guide's cage type regulating valve, includes valve body 1, valve seat 2,4 and of valve cage
Valve rod 5, bonnet, 6 is connected with valve body, in bonnet, 6 there is filler 8 to coordinate with valve rod 5, filler 7 is by gland 8, disc spring 9 and presses
Plate 10, which coordinates, to be pressed on bonnet, 6, is compensated automatically.Valve rod 5 carries out axial lifting by the actuator driven configured in complete machine
Activity.
Valve seat 2 is set in valve body 1, and valve cage 4 is located at the top of valve seat 2, and valve cage 4 is equipped with flow window.Also set in valve cage 4
There are small valve core 21 and big valve core 3.Small valve core 21 is connected with valve rod 5, small valve core and valve-stem integrated structure, valve rod band in the present embodiment
Dynamic small valve core 21 carries out axial activity, and small valve core only does micro- small-scale action in the present embodiment, and small valve core is matched in big valve core 3
Inner cavity 25 in axial activity, accurate guiding can be carried out.Big valve core 3 is arranged in valve cage 4 axial activity, big valve core 3 and valve
Sealing coordinates when seat 2 contacts, and big valve core 3, which drops to, carries out sealing Shuttoff Valve when contact with valve seat 2, big valve core 3 is in valve
Valve cage is coordinated to carry out flow-rate adjustment when axial activity in cage 4.
The outer wall of big valve core 3 is connected equipped with pilot hole 26 with inner cavity 25.Also there is first guide bracket 27, guide on big valve core 3
Seat 27 is leader channel 29 in the inner cavity 25 of big valve core 3, among first guide bracket 27, and leader channel 29 connects the interior of big valve core 3
Chamber 25 and valve body cavity of resorption 28, sealing cooperation when small valve core 21 is contacted with first guide bracket 27,21 activity of small valve core can be by first guide bracket 27
On leader channel 29 carry out sealing closing and unlatching.There is through hole 30, through hole 30 connects big valve core inner cavity 25 on small valve core 21
It is movable easy to small valve core so as to the two-way pressure balance that small valve core is subject to valve cage epicoele 31.Big valve core 3 is equipped with small valve core
Limiting section, small valve core 21 will be movable between leader channel 27 and small valve core limiting section.Have between small valve core limiting section and valve rod 5
There is runner 32, so that medium can flow to the top of small valve core limiting section.Small valve core limiting section is located at the upper of small valve core 21
Side, is additionally provided with the pre-tightening apparatus of effect small valve core upwards in big valve core 3, and pre-tightening apparatus is spring 22 in the present embodiment, spring 22
The lower section of small valve core 21 is arranged on, 22 pretension of spring is between small valve core and first guide bracket.Valve cage 4 in the present embodiment, big valve core 3
Mating part is cylindrical shape, and the inner cavity 31 of big valve core is also cylindrical shape.
The medium of the regulating valve enters from valve body epicoele, is flowed out from valve body cavity of resorption 28.Its operation principle is, when big valve core 3
Sealing off state is in valve seat 2, when small valve core 21 is also at sealing off state with leader channel 29, valve body epicoele
In medium pass through valve cage flow window after entered from pilot hole 26 in big valve core inner cavity 25, big valve core 3 can be applied
Upstream pressure, the sealing force of increase big valve core 3 and valve seat 2, actuator drive the effect of small valve core 21 to be pressed into guide by valve rod
On seat 27, the pressing thrust of actuator is superimposed with upstream pressure, further increases the sealing force of big valve core and valve seat, meets that height will
The leakage class asked；When needing Open valve, valve rod lifts small valve core 21 under the driving of actuator, opens in big valve core
Leader channel 29 on first guide bracket 27, makes before the valve of regulating valve and after valve（That is epicoele and cavity of resorption）Medium can Correspondent, big valve
Upstream pressure and the downstream pressure balance that core 3 is subject to are easy to unlatching；Sealing structure is not affected by temperature, and meets high temperature, high compression ring
Control is turned off under border.
Flow window is evenly arranged a circle on valve cage so that flows through the fine and closely woven stepless action of centrifugation shear force of window in big valve
Core, phenomena such as being unlikely to that big valve core swing, vibration, offset, locking occurs, and causes failsafe valve.Pilot hole is in big valve core
Outer wall is uniformly arranged a circle, and through hole is uniformly arranged a circle on small valve core, big valve core, small valve core stress evenly, balance.
The spacing pressing plate 24 for serving as small valve core limiting section is set on big valve core 3, the mesoporous of spacing pressing plate 24 is passed through for valve rod,
There is the runner 32 between mesoporous and valve rod, the outer wall of big valve core is equipped with step, and guide ring 25 is set in step and by spacing pressure
Plate 24 is pressed on big valve core 3, and the mesoporous of spacing pressing plate is stepped hole.Spacing pressing plate 24 can spacing small valve core 21 and general
Guide ring 25 is pressed on big valve core 3, more reasonable structure, and installation is more convenient.Guide ring uses soft graphite guide ring, is big valve core
There is provided accurate be oriented to, it is ensured that the precision and big valve core of big valve core action do not produce locking phenomenon with valve cage.
Claims (8)
1. double spool guide's cage type regulating valve, includes valve body（1）, valve seat（2）, valve cage（4）And valve rod（5）, valve seat（2）Set
Valve body（1）It is interior, valve cage（4）Positioned at valve seat（2）Top, valve cage（4）It is equipped with flow window, it is characterised in that：Valve cage（4）It is interior
It is additionally provided with small valve core（21）And big valve core（3）, small valve core（21）With valve rod（5）Connection, small valve core（21）Matching is in big valve core（3）
Inner cavity（25）Middle axial activity, big valve core（3）It is arranged on valve cage（4）Interior axial activity, big valve core（3）With valve seat（2）Contact
When sealing coordinate, big valve core（3）Outer wall be equipped with pilot hole（26）With inner cavity（25）Connection, big valve core（3）On also have first
Guide bracket（27）, first guide bracket（27）Positioned at big valve core（3）Inner cavity（25）In, first guide bracket（27）Centre is connection inner cavity（25）And valve
Body cavity of resorption（28）Leader channel（29）, small valve core（21）With first guide bracket（27）Seal and coordinate during contact, big valve core（3）It is equipped with
Small valve core limiting section, small valve core limiting section are located at the top of small valve core, and the pretension of effect small valve core upwards is additionally provided with big valve core
Device.
2. double spool guide cage type regulating valve as claimed in claim 1, it is characterised in that：Small valve core（21）Above having makes inner cavity
（25）With valve cage epicoele（31）The through hole of connection（30）, there is runner between small valve core limiting section and valve rod（32）.
3. double spool guide cage type regulating valve as claimed in claim 1, it is characterised in that：Set on big valve core and serve as small valve core
The spacing pressing plate of limiting section（24）, the mesoporous of spacing pressing plate is passed through for valve rod, is runner between mesoporous and valve rod（32）, big valve core
Outer wall be equipped with step, guide ring（23）Set in step and be pressed on by spacing pressing plate on big valve core, the mesoporous of spacing pressing plate
For stepped hole.
4. double spool guide cage type regulating valve as claimed in claim 1, it is characterised in that：Small valve core（21）With valve rod（5）One
Body structure.
5. double spool guide cage type regulating valve as claimed in claim 1, it is characterised in that：Pre-tightening apparatus is spring（22）, bullet
Spring is arranged on the lower section of small valve core, and spring pre-tightening is between small valve core and first guide bracket.
6. double spool guide cage type regulating valve as claimed in claim 1, it is characterised in that：The mating part of valve cage, big valve core
It is cylindrical shape, the inner cavity of big valve core is also cylindrical shape.
7. double spool guide cage type regulating valve as claimed in claim 1, it is characterised in that：Big valve core axial activity in valve cage
When, big valve core coordinates with valve cage flow-rate adjustment.
8. double spool guide cage type regulating valve as claimed in claim 2, it is characterised in that：Flow window uniform cloth on valve cage
A circle is put, pilot hole is uniformly arranged a circle in the outer wall of big valve core, and through hole is uniformly arranged a circle on small valve core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721257556.4U CN207333737U (en) | 2017-09-28 | 2017-09-28 | Double spool guide's cage type regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721257556.4U CN207333737U (en) | 2017-09-28 | 2017-09-28 | Double spool guide's cage type regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207333737U true CN207333737U (en) | 2018-05-08 |
Family
ID=62366987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721257556.4U Active CN207333737U (en) | 2017-09-28 | 2017-09-28 | Double spool guide's cage type regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207333737U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195783A (en) * | 2019-06-04 | 2019-09-03 | 四川长仪油气集输设备股份有限公司 | Piston valve core pressure self-balancing cut-off throttle valve |
| CN110345265A (en) * | 2019-08-01 | 2019-10-18 | 浙江汇正自控阀门有限公司 | It is a kind of first to open formula regulating valve |
| CN113028071A (en) * | 2020-07-27 | 2021-06-25 | 浙江力诺流体控制科技股份有限公司 | Design method of pilot balance cage type regulating valve |
| CN114508617A (en) * | 2022-02-28 | 2022-05-17 | 宁波杜肯阀门制造有限公司 | Vacuum jacket low-temperature pneumatic emergency cut-off valve |
| CN114562602A (en) * | 2020-11-27 | 2022-05-31 | 株式会社鹭宫制作所 | Electric valve |
-
2017
- 2017-09-28 CN CN201721257556.4U patent/CN207333737U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195783A (en) * | 2019-06-04 | 2019-09-03 | 四川长仪油气集输设备股份有限公司 | Piston valve core pressure self-balancing cut-off throttle valve |
| CN110345265A (en) * | 2019-08-01 | 2019-10-18 | 浙江汇正自控阀门有限公司 | It is a kind of first to open formula regulating valve |
| CN113028071A (en) * | 2020-07-27 | 2021-06-25 | 浙江力诺流体控制科技股份有限公司 | Design method of pilot balance cage type regulating valve |
| CN114562602A (en) * | 2020-11-27 | 2022-05-31 | 株式会社鹭宫制作所 | Electric valve |
| CN114508617A (en) * | 2022-02-28 | 2022-05-17 | 宁波杜肯阀门制造有限公司 | Vacuum jacket low-temperature pneumatic emergency cut-off valve |
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