CN209180447U - A kind of regulating valve of the resistance to cavitation of high pressure difference - Google Patents
A kind of regulating valve of the resistance to cavitation of high pressure difference Download PDFInfo
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- CN209180447U CN209180447U CN201822186184.1U CN201822186184U CN209180447U CN 209180447 U CN209180447 U CN 209180447U CN 201822186184 U CN201822186184 U CN 201822186184U CN 209180447 U CN209180447 U CN 209180447U
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- valve
- spool
- valve body
- cavitation
- resistance
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Abstract
The utility model relates to a kind of regulating valves of the resistance to cavitation of high pressure difference, including valve body, lower valve body, spool and integral type valve cage seat, the side of valve body is provided with the intake channel with horn-type structure, the spool and valve cage seat are mounted in the cavity of valve inner, valve cage is provided with outside the spool, the spool movable sealing valve cage, the valve cage is communicated with intake channel, it is provided with trumpet type channel below the spool, exit passageway that is communicating with trumpet type channel and having trumpet type diffuser is provided in the lower valve body.The utility model provide it is a kind of being capable of the long Novel regulating valve of resistance to erosion, anti-cavitation, service life.
Description
Technical field
The utility model relates to regulating valve technical fields, and in particular to a kind of regulating valve of the resistance to cavitation of high pressure difference.
Background technique
Septum valve is often used under hyperbaric environment such as 16Mpa 22Mpa 26Mpa 32Mpa 42Mpa pressure,
Its working method is using the flow area variation between spool and valve seat to carry out flow after control valve, meets technique with this
On science control management to system, the high pressure drop on entire valve all acts on the throttling that spool and valve seat are constituted and pays.It is existing
The direct erosion spool of regulating valve fluid media (medium), especially under small guide vane, since gap is small between spool and valve seat, medium differential pressure
Greatly, flow velocity is high, and spool erosion is serious, and changes original state after causing spool, valve seat deformation, and technique cannot be reached by, which being allowed to, wants
Therefore the state of a control asked, the service life of regulating valve terminate.
At ammonia separator and cool exchanger in chemical industry synthesis ammonia device regulating valve due to pressure difference it is big, inlet pressure 28MPa
Outlet pressure 2MPa, which contains liquid and gas here, and due to High Pressure Difference, flow velocity is fast here for medium, because
And in addition to generating and washing away by force, it is usually also ruptured with bubble when high pressure turns low pressure and the cavitation that generates, domestic manufacturer exist
Regulating valve is often made into common single-seat valve when encountering this operating condition, spool and pile-up welding hard alloy at valve base sealing are improved with this
Resistance to erosion, anti-cavitation ability, but ideal service life is often not achieved in its service life.
Utility model content
The purpose of this utility model is that: in view of the above-mentioned problems, the utility model one kind is provided being capable of resistance to erosion, anti-vapour
The long Novel regulating valve of erosion, service life, a kind of regulating valve of the resistance to cavitation of high pressure difference.
The technical solution adopted in the utility model is as follows:
A kind of regulating valve of the resistance to cavitation of high pressure difference, including valve body, lower valve body, spool and integral type valve cage seat, it is described
Side of valve body is provided with the intake channel with horn-type structure, and the spool and valve cage seat are mounted on the cavity of valve inner
In, it is provided with valve cage, the spool movable sealing valve cage outside the spool, the valve cage is communicated with intake channel, the spool
Lower section is provided with trumpet type channel, is provided in the lower valve body communicating with trumpet type channel and with trumpet type diffuser
Exit passageway.
Further, the horn-type structure of the intake channel is positioned close at valve body inner flow passage, and the import is logical
Diameter is the diameter at spool root sealer at the minimum of the horn-type structure in road.
Further, on the valve cage in addition to the not set valve cage hole in the valve cage position of the intake channel face, other portions
Divide and is evenly arranged with multiple valve cage holes.
Further, the sealing root of the spool lower end is movably arranged in the trumpet type channel.
Further, the sealing root of the spool is mushroom-head, the diameter and loudspeaker of the mushroom-head sealed root
The end diameter in type channel is equal.
Further, the lower end of lower valve body is arranged in the opening of the exit passageway.
Further, the valve cage is bolted hard connect with valve body and lower valve body and seals simultaneously.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are:
The utility model is highly effective in the occasion of High Pressure Difference fluid media (medium) since there are four decompressions, especially in height
In the case where pressure difference, medium forms primary decompression when entering valve inner space from intake channel, carries out two using valve cage hole
Secondary decompression is depressurized three times in the trumpet type channel of the sealing root of spool, carries out four in the trumpet type diffuser of lower valve body
Secondary decompression, the gas phase in fluid due to depressurizing for four times and finally the power in explosion is preferably minimized step by step at this time, thus significantly
The destruction to spool is reduced, the service life of regulating valve is extended with this and reduces noise, reduces the maintenance rate of equipment,
The long-term operation for realizing device, reduces production cost.
Detailed description of the invention
Fig. 1 is the structure chart of the utility model；
Fig. 2 is the cross-sectional view of M-M；
In the figure, it is marked as 1- spool, 2- valve cage, 3- intake channel, 4- lower valve body, 5- exit passageway, 6- bolt, 7- valve cage
Seat, 8- valve body, 201- valve cage hole.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model, i.e., the described embodiments are only a part of the embodiments of the utility model,
Instead of all the embodiments.The component of the utility model embodiment being usually described and illustrated herein in the accompanying drawings can be with each
Different configurations is planted to arrange and design.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Reality based on the utility model
Apply example, those skilled in the art's every other embodiment obtained without making creative work belongs to
The range of the utility model protection.
It should be noted that the relational terms of term " first " and " second " or the like be used merely to an entity or
Operation is distinguished with another entity or operation, and without necessarily requiring or implying between these entities or operation, there are any
This actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that include a series of elements process, method, article or equipment not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described
There is also other identical elements in the process, method, article or equipment of element.
A kind of regulating valve of the resistance to cavitation of high pressure difference, including valve body 8, lower valve body 4, spool 1 and integral type valve cage seat 7,
8 side of valve body is provided with the intake channel 3 with horn-type structure, and the spool 1 and valve cage seat 7 are mounted in valve body 8
In the cavity in portion, valve cage 2, the 1 movable sealing valve cage 2 of spool, the valve cage 2 and intake channel 3 are provided with outside the spool 1
It communicates, trumpet type channel is provided with below the spool 1, is provided with communicate with trumpet type channel and band in the lower valve body 4
There is the exit passageway 5 of trumpet type diffuser.
It elaborates below with reference to Fig. 1, Fig. 2 to the utility model.
Embodiment 1
A kind of regulating valve of the resistance to cavitation of high pressure difference, including valve body 8, lower valve body 4, spool 1 and integral type valve cage seat 7,
8 side of valve body is provided with the intake channel 3 with horn-type structure, and the spool 1 and valve cage seat 7 are mounted in valve body 8
In the cavity in portion, valve cage 2, the 1 movable sealing valve cage 2 of spool, the valve cage 2 and intake channel 3 are provided with outside the spool 1
It communicates, trumpet type channel is provided with below the spool 1, is provided with communicate with trumpet type channel and band in the lower valve body 4
There is the exit passageway 5 of trumpet type diffuser.
The working principle of the utility model is that medium enters valve inner space from the intake channel with horn-type structure
When form primary decompression, using valve cage hole carry out secondary pressure, spool sealing root trumpet type channel carry out three times
Decompression carries out four decompressions in the trumpet type diffuser of lower valve body, and the gas phase in fluid is due to depressurizing step by step for four times and most at this time
The power in explosion is preferably minimized eventually, due to reducing velocity of medium there are four decompressions, realizes valve resistance to erosion, length
The purpose of periodic duty, thus the utility model can resistance to erosion, anti-cavitation, service life it is long, be particularly suitable for High Pressure Difference
Situation.
The utility model forms primary decompression when entering valve inner space from intake channel by the way that medium is arranged, using
Secondary pressure is realized in valve cage hole, is depressurized by the way that the trumpet type channel realization of sealing root of spool is arranged, is existed three times by setting
The trumpet type diffuser of lower valve body realizes four decompressions；Due to there are four decompressions, High Pressure Difference fluid media (medium) occasion very
Effectively, especially in the case where High Pressure Difference, medium forms primary decompression when entering valve inner space from intake channel, then passes through
It crosses valve cage hole and carries out secondary pressure, depressurized three times in the trumpet type channel of the sealing root of spool, in the loudspeaker of lower valve body
Type diffuser carries out four decompressions, and the gas phase in fluid due to depressurizing for four times and finally the power in explosion drops to step by step at this time
It is minimum, the destruction to spool is thus greatly reduced, the service life of regulating valve is extended and reduces noise；Reduce equipment
Maintenance rate；Realize the long-term operation of device；Reduce production cost.
Embodiment 2
On the basis of embodiment 1, on the basis of embodiment 1, the horn-type structure setting of the intake channel 3 is being leaned on
At 8 inner flow passage of nearly valve body, and diameter is at 1 root sealer of spool at the minimum of the horn-type structure of the intake channel 3
Diameter, on fluid flow direction, 3 cross section of intake channel of horn-type structure reduces, when guaranteeing not influence import with this
There are enough fluids to flow into the cavity inside valve body 8, while realizing in the cavity that fluid flows into inside valve body 8 and once subtracting
Pressure reduces flow velocity, reduces washing away to 8 internal cavity of valve body and valve cage 2 with this, improves the service life of valve body 8 and valve cage 2.
Embodiment 3
On the basis of embodiment 1, the not set valve cage in 2 position of valve cage of 3 face of intake channel is removed on the valve cage 2
Outside hole 201, other parts are evenly arranged with multiple valve cage holes 201, the set-up mode in the valve cage hole 201 can make medium from
When intake channel 3 enters, can equably it enter in valve cage from each valve cage hole 201, so that the flowing of medium is more stable
Weighing apparatus, valve cage 2 are oriented to spool 1, inhibit spool vibration, reduce noise；Valve cage hole 201 forms a decompression, thus,
High using the arrangement works pressure, vibration and noise are small, and sealing performance is superior.
Embodiment 4
On the basis of embodiment 1, the sealing root of 1 lower end of spool is movably arranged in the trumpet type channel,
The cross section in trumpet type channel is gradually increased, and realizes decompression three times；The sealing root of the spool 1 is mushroom-head, institute
The diameter for stating mushroom-head sealed root is equal with the end diameter in trumpet type channel, thus spool 1 is in activity, can be effective
It realizes sealing and opens.
Embodiment 5
On the basis of embodiment 1, the lower end of lower valve body 4 is arranged in the opening of the exit passageway 5, the utility model
Flow direction of medium goes out formula the bottom of into for side, prevents spool 1 by erosion, the trumpet type channel from top to bottom set gradually and loudspeaker
Type diffuser cross section is gradually increased, and realizes decompression, effective resistance to erosion anti-cavitation twice, and extend regulating valve uses the longevity
Life.
Embodiment 6
On the basis of embodiment 1, the valve cage seat 7 is bolted hard connect together with valve body 8, lower valve body 4
When seal, gasket is provided between valve cage seat 7 and lower valve body 4 to be provided with gasket between valve cage seat 7 and valve body 8 for sealing
For sealing.
The above are the main feature of this programme and its advantages, It should be understood by those skilled in the art that this programme is not
It is restricted to the described embodiments, the above embodiments and description only describe the principles of this programme, are not departing from this
Under the premise of scheme spirit and scope, this programme be will also have various changes and improvements, these changes and improvements both fall within requirement and protect
In the scope of the utility model of shield, this programme is claimed range and is defined by the appending claims and its equivalent thereof.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to dismantling connection, or
It is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediate media's letter can also be passed through
It is situated between and is connected, can be the connection inside two elements.It for the ordinary skill in the art, can be as the case may be
Understand the concrete meaning of above-mentioned term in the present invention.
Claims (7)
1. a kind of regulating valve of the resistance to cavitation of high pressure difference, including valve body (8), lower valve body (4), spool (1) and integral type valve cage
Seat (7), it is characterised in that: valve body (8) side is provided with the intake channel (3) with horn-type structure, the spool (1)
It is mounted in the internal cavity of valve body (8) with valve cage seat (7), is provided with valve cage (2) outside the spool (1), the spool (1) is living
Dynamic sealing valve cage (2), the valve cage (2) communicate with intake channel (3), are provided with trumpet type channel, institute below the spool (1)
It states and is provided with exit passageway (5) that is communicating with trumpet type channel and having trumpet type diffuser on lower valve body (4).
2. a kind of regulating valve of the resistance to cavitation of high pressure difference according to claim 1, it is characterised in that: the intake channel
(3) horn-type structure is positioned close at valve body (8) inner flow passage, and the minimum of the horn-type structure of the intake channel (3)
Locating diameter is the diameter at spool (1) root sealer.
3. a kind of regulating valve of the resistance to cavitation of high pressure difference according to claim 1, it is characterised in that: the valve cage (2)
Above in addition to the not set valve cage hole (201) in valve cage (2) position of the intake channel (3) face, other parts are evenly arranged with more
A valve cage hole (201).
4. a kind of regulating valve of the resistance to cavitation of high pressure difference according to claim 1, it is characterised in that: the spool (1)
The sealing root of lower end is movably arranged in the trumpet type channel.
5. a kind of regulating valve of the resistance to cavitation of high pressure difference according to claim 4, it is characterised in that: the spool (1)
Sealing root be mushroom-head, the diameter of the mushroom-head sealed root is equal with the end diameter in trumpet type channel.
6. a kind of regulating valve of the resistance to cavitation of high pressure difference according to claim 1, it is characterised in that: the exit passageway
(5) lower end of the opening setting in lower valve body (4).
7. a kind of regulating valve of the resistance to cavitation of high pressure difference according to claim 1, it is characterised in that: the valve cage seat
(7) it by bolt (6) fixed hard contact connectio while being sealed with valve body (8), lower valve body (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822186184.1U CN209180447U (en) | 2018-12-25 | 2018-12-25 | A kind of regulating valve of the resistance to cavitation of high pressure difference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822186184.1U CN209180447U (en) | 2018-12-25 | 2018-12-25 | A kind of regulating valve of the resistance to cavitation of high pressure difference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209180447U true CN209180447U (en) | 2019-07-30 |
Family
ID=67377945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822186184.1U Active CN209180447U (en) | 2018-12-25 | 2018-12-25 | A kind of regulating valve of the resistance to cavitation of high pressure difference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209180447U (en) |
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2018
- 2018-12-25 CN CN201822186184.1U patent/CN209180447U/en active Active
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