CN208871143U - 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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- CN208871143U CN208871143U CN201821474329.1U CN201821474329U CN208871143U CN 208871143 U CN208871143 U CN 208871143U CN 201821474329 U CN201821474329 U CN 201821474329U CN 208871143 U CN208871143 U CN 208871143U
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Abstract
The multilevel decompression Anti-erosion valve internal component structure for High Pressure Difference operating condition of the utility model, 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.The utility model antihypertensive effect 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
It is specifically a kind of for High Pressure Difference operating condition the utility model relates to valve internal resistance to compression, Anti-erosion technical field
Multilevel decompression 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.
Utility model content
The purpose of this utility model is that: it greatly, is used to solve leakage when above-mentioned valve works under high temperature and high pressure condition
The problems such as service life is short, needs to be implemented the great efforts of device, and sealing performance is bad, and erosion resistance is weak provides a kind of for high pressure
The multilevel decompression Anti-erosion valve internal component structure of poor operating condition.
The technical solution adopted in the utility model is:
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 are 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,
It is in tube-in-tube structure relative to spool, the spool is located in the sleeve, and there are media to be depressured buffering sky between valve cage and spool
Between, between valve seat and spool also there are medium be depressured cushion space, formed multilevel decompression structure, the valve seat at least two,
Upper and lower arranged superposed, 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 be added
It is deep.
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 utility model are:
The multilevel decompression Anti-erosion valve internal component structure for High Pressure Difference operating condition of the utility model, valve inner 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.The utility model drop
It presses effect 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, leakproofness
Can be good, Anti-erosion can be relatively strong.
Detailed description of the invention
Fig. 1 is the utility model structure diagram
Fig. 2 is the utility model circle flow regulating tank schematic diagram
Fig. 3 is the utility model rectangle flow regulating tank schematic diagram
Figure label indicates: 1- valve rod, 2- spool, 3- valve cage, 4- valve seat, and 5- flexible sealing is compared with 6- fastening screw, 7- flows
Measure regulating tank, 8- flow regulating orifices.
Specific embodiment
The utility model is a kind of multilevel decompression Anti-erosion valve internal component structure for High Pressure Difference operating condition, is particularly suitable for using
In the special industry more demanding to spool anti-pressure ability, such as chemical industry, power plant, steel mill.
Shown in Fig. 1, Fig. 2, the valve inner assembly of the utility model mainly includes valve rod 1, spool 2, valve cage 3, valve seat 4, valve
Core 2 is fixedly connected on the lower end of valve rod 1, and valve cage 3 is Chong Die with about 4 valve seat, and valve seat 4 at least two is overlapped cloth below valve cage
It sets, ladder seam allowance overlapping mode is used between the adjacent valve seat of arranged superposed, clinch is fixed using lock-screw 6.Valve cage exists
The top of valve seat, 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 sealing is formed between cylindrical seal face and valve seat, spool is located in the sleeve that valve cage and valve seat are constituted, in valve cage and valve
The mating surface of core upper section is equipped with flexible seal ring 5, which uses rubber seal or teflin ring.
There are media to be depressured cushion space between valve cage and spool, and also there are medium decompressions between each valve seat and spool at different levels
Cushion space forms multilevel decompression structure, and each valve seat is corresponding with multiple step plug, and the series of spool determines the number of valve seat, on
Lower arranged superposed, there are a media to be depressured cushion space between each valve seat and spool.The mating surface of spool and valve seat
It is sealing surface when valve is in close state, which is the cylindrical surface with antifriction alloy surface layer, antifriction alloy surface layer
It is the overlay cladding using hard alloy, nitriding or carburized layer can be used.It is uniformly distributed that several circumferential directions are equipped on the column sealed face of spool
Longitudinal flow regulating tank 7, the upper end of the longitudinal direction flow regulating tank is blind seal structure, and lower end is port structure.Longitudinal flow tune
The cross sectional shape for saving slot is semicircle or rectangle, and the depth of longitudinal flow regulating tank is from top to bottom dull to deepen, longitudinal flow tune
The width of section slot from top to bottom widen by dullness.
When the utility model is used, multiple step plug is mounted on the valve body that valve cage and multiple valve seats are constituted, held by the external world
The power of row mechanism, band ovable valve stem, multiple step plug, moving valve are opened, and at the beginning of valve opening, medium is by the hole of valve cage to flowing down
It is dynamic, 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 exist
It is moved between flow 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. being used for the multilevel decompression Anti-erosion valve internal component structure of High Pressure Difference operating condition as described in claim 1, which is characterized in that institute
The mating surface for stating spool and the lowermost final stage valve seat is sealing surface when valve is in close state, which is with resistance to
The cylindrical surface for grinding alloy surface is equipped with several circumferentially uniformly distributed longitudinal flow regulating tanks, the longitudinal direction on the column sealed face of spool
The upper end of flow regulating tank is blind seal structure, and lower end is port structure.
3. being used for the multilevel decompression Anti-erosion valve internal component structure of High Pressure Difference operating condition as claimed in claim 2, which is characterized in that institute
The cross sectional shape of longitudinal flow regulating tank is stated as semicircle, 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.
4. being used for the multilevel decompression Anti-erosion valve internal component structure of High Pressure Difference operating condition as claimed in claim 2, which is characterized in that institute
The cross sectional shape for stating longitudinal flow regulating tank is rectangle, and the depth of longitudinal flow regulating tank is from top to bottom dull to deepen.
5. being used for the multilevel decompression Anti-erosion valve internal component structure of High Pressure Difference operating condition as claimed in claim 2, which is characterized in that institute
The antifriction alloy surface layer for stating spool and valve base sealing mating surface is weld-deposited cladding.
6. being used for the multilevel decompression Anti-erosion valve internal component structure of High Pressure Difference operating condition as claimed in claim 2, which is characterized in that institute
The antifriction alloy surface layer for stating spool and valve base sealing mating surface is nitriding or carburized layer.
7. being used for the multilevel decompression Anti-erosion valve internal component structure of High Pressure Difference operating condition as described in claim 1, which is characterized in that institute
The mating surface for stating valve cage and spool upper section is equipped with flexible seal ring.
8. being used for the multilevel decompression Anti-erosion valve internal component structure of High Pressure Difference operating condition as claimed in claim 7, which is characterized in that institute
Stating flexible seal ring is rubber seal or teflin ring.
9. being used for the multilevel decompression Anti-erosion valve internal component structure of High Pressure Difference operating condition as described in claim 1, which is characterized in that institute
Spool is stated with valve rod lower end using being threadedly coupled, interconnecting piece is equipped with lock-screw.
10. being used for the multilevel decompression Anti-erosion valve internal component structure of High Pressure Difference operating condition as described in claim 1, which is characterized in that
The valve seat of about at least two arranged superposed, ladder seam allowance overlapping mode is used between adjacent valve seat, and clinch is equipped with lock
Tight screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821474329.1U CN208871143U (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 |
|---|---|---|---|
| CN201821474329.1U CN208871143U (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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| Publication Number | Publication Date |
|---|---|
| CN208871143U true CN208871143U (en) | 2019-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821474329.1U Active CN208871143U (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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| CN (1) | CN208871143U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111473155A (en) * | 2020-03-13 | 2020-07-31 | 合肥通用机械研究院有限公司 | Champagne tower type multi-stage throttle control valve |
-
2018
- 2018-09-10 CN CN201821474329.1U patent/CN208871143U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111473155A (en) * | 2020-03-13 | 2020-07-31 | 合肥通用机械研究院有限公司 | Champagne tower type multi-stage throttle control valve |
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