CN108930835A - A kind of multilevel decompression Anti-erosion valve internal component structure for High Pressure Difference operating condition - Google Patents
A kind of multilevel decompression Anti-erosion valve internal component structure for High Pressure Difference operating condition Download PDFInfo
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- CN108930835A CN108930835A CN201811052138.0A CN201811052138A CN108930835A CN 108930835 A CN108930835 A CN 108930835A CN 201811052138 A CN201811052138 A CN 201811052138A CN 108930835 A CN108930835 A CN 108930835A
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- China
- Prior art keywords
- valve
- spool
- high pressure
- pressure difference
- valve seat
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/08—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/44—Details of seats or valve members of double-seat valves
- F16K1/443—Details of seats or valve members of double-seat valves the seats being in series
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Sliding Valves (AREA)
Abstract
Multilevel decompression Anti-erosion valve internal component structure for High Pressure Difference operating condition of the invention, valve inner seat at least two, upper and lower arranged superposed, there are a media to be depressured cushion space between each valve seat and spool.Antihypertensive effect of the present invention is obvious, and small, long service life is leaked when working under high temperature and high pressure condition, and the dynamics for needing to be implemented device is small, good seal performance, and Anti-erosion can be relatively strong.
Description
Technical field
The present invention relates to valve internal resistance to compression, Anti-erosion technical field, specifically a kind of multistage for High Pressure Difference operating condition
It is depressured Anti-erosion valve internal component structure.
Background technique
Current each field valve in use, conventional common valve can not meet certain industries use condition and
Use environment, especially chemical industry, power plant, steel mill etc., require the spool of valve internal high, need spool being capable of resistance to compression, anti-
Erosion ability is higher, and to meet the needs of these special industry valves, people set the core assembly of valve internal again
Meter, develop it is a kind of between valve cage and spool, between valve seat and spool there are medium decompression cushion space spool, formed
The valve inner assembly of internal buck configuration, though the component forms buck configuration in valve internal, to valve internal resistance to compression
Certain effect is played, but the core assembly of the valve generallys use single valve seat, and the structure of spool is also single
Cylindrical spool, although also used between spool and valve cage, spool and valve seat medium decompression cushion space, decompression effect
Fruit is unobvious, leaks greatly when working under high temperature and high pressure condition, service life is short, needs to be implemented the great efforts of device, sealing performance
Bad, erosion resistance is weak.
Summary of the invention
It is an object of the invention to: to solve to leak big, service life when above-mentioned valve works under high temperature and high pressure condition
It is short, the great efforts of device are needed to be implemented, the problems such as sealing performance is bad, and erosion resistance is weak provides a kind of for High Pressure Difference work
The multilevel decompression Anti-erosion valve internal component structure of condition.
The technical solution adopted by the present invention is that:
A kind of multilevel decompression Anti-erosion valve internal component structure for High Pressure Difference operating condition, including valve rod, spool, valve cage, valve seat, institute
State the lower end that spool is fixedly connected on valve rod, the valve cage, valve seat arranged superposed up and down, on valve cage occupies, under valve seat occupies, relative to
Spool is in tube-in-tube structure, and the spool is located in the sleeve, and there are media to be depressured cushion space between valve cage and spool, in valve
Also there are media to be depressured cushion space between seat and spool, forms multilevel decompression structure, and the valve seat at least two is overlapped up and down
Arrangement, there are a media to be depressured cushion space between each valve seat and spool.
The mating surface of the spool and the lowermost final stage valve seat is sealing surface when valve is in close state, the sealing
Face is the cylindrical surface with antifriction alloy surface layer, and several circumferentially uniformly distributed longitudinal flows are equipped on the column sealed face of spool and are adjusted
Slot, the upper end of the longitudinal direction flow regulating tank are blind seal structure, and lower end is port structure.
The cross sectional shape of the longitudinal direction flow regulating tank is semicircle, and the depth of longitudinal flow regulating tank is from top to bottom dull
Deepen, the width of longitudinal flow regulating tank from top to bottom widen by dullness
The cross sectional shape of the longitudinal direction flow regulating tank is rectangle, and the depth of longitudinal flow regulating tank is from top to bottom dull to deepen.
The antifriction alloy surface layer of the spool and valve base sealing mating surface is weld-deposited cladding.
The antifriction alloy surface layer of the spool and valve base sealing mating surface is nitriding or carburized layer.
The mating surface of the valve cage and spool upper section is equipped with flexible seal ring.
The flexible seal ring is rubber seal or teflin ring.
For the spool with valve rod lower end using being threadedly coupled, interconnecting piece is equipped with lock-screw.
The valve seat of about at least two arranged superposed uses ladder seam allowance overlapping mode, overlap joint between adjacent valve seat
Portion is equipped with lock-screw.
The beneficial effects of the present invention are:
Multilevel decompression Anti-erosion valve internal component structure for High Pressure Difference operating condition of the invention, valve inner seat at least two, on
Lower arranged superposed, there are a media to be depressured cushion space between each valve seat and spool.Antihypertensive effect of the present invention is obvious,
Small, long service life is leaked when working under high temperature and high pressure condition, the dynamics for needing to be implemented device is small, good seal performance, Anti-erosion
It can be relatively strong.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention
Fig. 2 is round flow regulating tank schematic diagram of the invention
Fig. 3 is rectangle flow regulating tank schematic diagram of the present invention
Figure label indicates: 1- valve rod, 2- spool, 3- valve cage, 4- valve seat, 5- flexible sealing is compared with, 6- fastening screw, 7- flow tune
Save slot, 8- flow regulating orifices.
Specific embodiment
The present invention is a kind of multilevel decompression Anti-erosion valve internal component structure for High Pressure Difference operating condition, particularly suitable for right
In the more demanding special industry of spool anti-pressure ability, such as chemical industry, power plant, steel mill.
Shown in Fig. 1, valve inner assembly of the invention mainly includes valve rod 1, spool 2, valve cage 3, valve seat 4, and spool 2 is fixed to be connected
It connects in the lower end of valve rod 1, valve cage 3 is Chong Die with about 4 valve seat, valve seat 4 at least two, the arranged superposed below valve cage, is overlapped cloth
Ladder seam allowance overlapping mode is used between the adjacent valve seat set, clinch is fixed using lock-screw 6.Valve cage is in the upper of valve seat
Side, relative to spool in tube-in-tube structure after valve cage is Chong Die with valve seat, spool 2 is multiple step plug, and every grade of spool is all using cylinder
Sealing is formed between shape sealing surface and valve seat, spool is located in the sleeve that valve cage and valve seat are constituted, in valve cage and spool upper section
Mating surface is equipped with flexible seal ring 5, which uses rubber seal or teflin ring.Valve cage with
There are media to be depressured cushion space between spool, and also there are media to be depressured buffering sky between each valve seat and spool at different levels
Between, multilevel decompression structure is formed, each valve seat is corresponding with multiple step plug, and the series of spool determines the number of valve seat, is overlapped up and down
Arrangement, there are a media to be depressured cushion space between each valve seat and spool.The mating surface of spool and valve seat is valve
Sealing surface when being in close state, the sealing surface be the cylindrical surface with antifriction alloy surface layer, antifriction alloy surface layer be using
Nitriding or carburized layer can be used in the overlay cladding of hard alloy.Several circumferentially uniformly distributed longitudinal directions are equipped on the column sealed face of spool
Flow regulating tank 7, the upper end of the longitudinal direction flow regulating tank are blind seal structure, and lower end is port structure.Longitudinal flow regulating tank
Cross sectional shape is semicircle or rectangle, and shown in Fig. 2, Fig. 3, the depth of longitudinal flow regulating tank is from top to bottom dull to deepen, longitudinal
The width of flow regulating tank from top to bottom widen by dullness.
In the use of the present invention, multiple step plug is mounted on the valve body that valve cage and multiple valve seats are constituted, pass through extraneous execution machine
The power of structure, band ovable valve stem, multiple step plug, moving valve are opened, and at the beginning of valve opening, medium is flowed downward by the hole of valve cage,
It is flowed out finally by multiple step plug flow regulating orifices 8, when valve is closed, multiple step plug and valve base sealing, the aperture of valve are flowing
It is moved between amount regulating tank, the captured area for changing regulating tank reaches traffic requirement.
Claims (10)
1. a kind of multilevel decompression Anti-erosion valve internal component structure for High Pressure Difference operating condition, including valve rod, spool, valve cage, valve seat,
The spool is fixedly connected on the lower end of valve rod, the valve cage, valve seat arranged superposed up and down, on valve cage occupies, under valve seat occupies, relatively
It is in tube-in-tube structure in spool, the spool is located in the sleeve, and there are media to be depressured cushion space between valve cage and spool,
Also there are media to be depressured cushion space between valve seat and spool, forms multilevel decompression structure, which is characterized in that the valve seat is at least
Two, upper and lower arranged superposed, there are a media to be depressured cushion space between each valve seat and spool.
2. High Pressure Difference sleeve adjusting valve as described in claim 1, which is characterized in that the spool and the lowermost final stage valve seat
Mating surface be sealing surface when valve is in close state, which is the cylindrical surface with antifriction alloy surface layer, in valve
The column sealed face of core is equipped with several circumferentially uniformly distributed longitudinal flow regulating tanks, and the upper end of the longitudinal direction flow regulating tank is blind sealed knot
Structure, lower end are port structure.
3. High Pressure Difference sleeve adjusting valve as claimed in claim 2, which is characterized in that the section shape of the longitudinal direction flow regulating tank
Shape is semicircle, and the depth of longitudinal flow regulating tank is from top to bottom dull to deepen, and the width of longitudinal flow regulating tank is from top to bottom
Dullness is widened.
4. High Pressure Difference sleeve adjusting valve as claimed in claim 2, which is characterized in that the section shape of the longitudinal direction flow regulating tank
Shape is rectangle, and the depth of longitudinal flow regulating tank is from top to bottom dull to deepen.
5. High Pressure Difference sleeve adjusting valve as claimed in claim 2, which is characterized in that the spool and valve base sealing mating surface
Antifriction alloy surface layer is weld-deposited cladding.
6. High Pressure Difference sleeve adjusting valve as claimed in claim 2, which is characterized in that the spool and valve base sealing mating surface
Antifriction alloy surface layer is nitriding or carburized layer.
7. High Pressure Difference sleeve adjusting valve as described in claim 1, which is characterized in that the mating surface of the valve cage and spool upper section
Equipped with flexible seal ring.
8. High Pressure Difference sleeve adjusting valve as claimed in claim 7, which is characterized in that the flexible seal ring is rubber seal
Or teflin ring.
9. High Pressure Difference sleeve adjusting valve as described in claim 1, which is characterized in that the spool and valve rod lower end use screw thread
Connection, interconnecting piece are equipped with lock-screw.
10. High Pressure Difference sleeve adjusting valve as described in claim 1, which is characterized in that about at least two arranged superposed
Valve seat, ladder seam allowance overlapping mode is used between adjacent valve seat, clinch is equipped with lock-screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811052138.0A CN108930835A (en) | 2018-09-10 | 2018-09-10 | A kind of multilevel decompression Anti-erosion valve internal component structure for High Pressure Difference operating condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811052138.0A CN108930835A (en) | 2018-09-10 | 2018-09-10 | A kind of multilevel decompression Anti-erosion valve internal component structure for High Pressure Difference operating condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108930835A true CN108930835A (en) | 2018-12-04 |
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ID=64443877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811052138.0A Pending CN108930835A (en) | 2018-09-10 | 2018-09-10 | A kind of multilevel decompression Anti-erosion valve internal component structure for High Pressure Difference operating condition |
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| Country | Link |
|---|---|
| CN (1) | CN108930835A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2866992Y (en) * | 2006-01-25 | 2007-02-07 | 李桂江 | Alloy flow regulating valve |
| CN102705574A (en) * | 2012-05-31 | 2012-10-03 | 无锡宝牛阀业有限公司 | Pressure balancing type multi-section and multi-stage depressurization sleeve guiding regulating valve |
| CN203131204U (en) * | 2012-12-31 | 2013-08-14 | 雷蒙德（北京）阀门制造有限公司 | Multi-stage depressurization and noise reduction control valve |
| CN204226681U (en) * | 2014-11-06 | 2015-03-25 | 西姆流体技术（上海）有限公司 | Be applicable to the regulating valve structure of low-flow high-pressure-difference |
| CN204704402U (en) * | 2015-05-29 | 2015-10-14 | 徐州阿卡控制阀门有限公司 | A kind of double-sealing low leakage low noise sound cage valve |
| CN204879016U (en) * | 2015-08-27 | 2015-12-16 | 浙江精杰实业有限公司 | High differential pressure regulating valve |
| CN206309972U (en) * | 2016-12-19 | 2017-07-07 | 天津精通控制仪表技术有限公司 | A kind of Cascade Multistage decompression high-differential-pressure regulating valve |
-
2018
- 2018-09-10 CN CN201811052138.0A patent/CN108930835A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2866992Y (en) * | 2006-01-25 | 2007-02-07 | 李桂江 | Alloy flow regulating valve |
| CN102705574A (en) * | 2012-05-31 | 2012-10-03 | 无锡宝牛阀业有限公司 | Pressure balancing type multi-section and multi-stage depressurization sleeve guiding regulating valve |
| CN203131204U (en) * | 2012-12-31 | 2013-08-14 | 雷蒙德（北京）阀门制造有限公司 | Multi-stage depressurization and noise reduction control valve |
| CN204226681U (en) * | 2014-11-06 | 2015-03-25 | 西姆流体技术（上海）有限公司 | Be applicable to the regulating valve structure of low-flow high-pressure-difference |
| CN204704402U (en) * | 2015-05-29 | 2015-10-14 | 徐州阿卡控制阀门有限公司 | A kind of double-sealing low leakage low noise sound cage valve |
| CN204879016U (en) * | 2015-08-27 | 2015-12-16 | 浙江精杰实业有限公司 | High differential pressure regulating valve |
| CN206309972U (en) * | 2016-12-19 | 2017-07-07 | 天津精通控制仪表技术有限公司 | A kind of Cascade Multistage decompression high-differential-pressure regulating valve |
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