CN107606256A - A kind of pressure-reducing valve - Google Patents
A kind of pressure-reducing valve Download PDFInfo
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- CN107606256A CN107606256A CN201711072257.8A CN201711072257A CN107606256A CN 107606256 A CN107606256 A CN 107606256A CN 201711072257 A CN201711072257 A CN 201711072257A CN 107606256 A CN107606256 A CN 107606256A
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Abstract
The invention discloses a kind of pressure-reducing valve.The pressure-reducing valve includes main valve body, and valve pocket is formed in the main valve body；The valve outlet and valve inlet connected with the valve pocket is provided with the main valve body；At least two are provided between the valve inlet and the valve outlet to be suitable to depressurize heel row to the decompressor of valve outlet by the fluid of the valve inlet.The pressure-reducing valve occupies little space, cost is low and high-pressure leakage point is few, and each decompressor shares a main valve body, each other independently of each other, does not interfere with each other, can flexibly switch or use simultaneously.
Description
Technical field
The invention belongs to fluid valve technical field, and in particular to a kind of pressure-reducing valve for high pressure drop depressurized system, especially
It is related to a kind of pressure-reducing valve for being used to for hot high score to be decompressed to low point of heat.
Background technology
In coal tar hydrogenating industry, current existing technique adds just like fixed bed hydrogenation, floating bed hydrogenation and ebullated bed
Hydrogen, no matter which kind of technique, be required to the reacted oil product oil gas that carry the materials such as hydrogen and partial catalyst from high pressure
Separator enters low pressure separator, and the separation of gas-liquid-solid is realized after decompression.
In above-mentioned decompression occasion, the differential pressure from high-pressure separator to low pressure separator can reach 5MPa to 100MPa, through adding
Decompression medium after hydrogen can be liquid, gas-liquid mixture or gas-liquid-solid three-phase mixture, at the vena contracta by pressure-reducing valve
The pressure of liquid is reduced to equal to or less than the liquid in the saturated vapour pressure at a temperature of valve inlet, partially liq vapour
Change, produce flass.Meanwhile decompression process causes part dissolved hydrogen in fluid to discharge, and the part after vena contracta
Fluid pressure is recovered to its saturated vapour pressure, causes the liquid of vaporization to recover to liquid phase, steam bubble rupture, discharges energy
Amount, cavitation phenomenon is produced, while produce vibration and noise.Above-mentioned flass and cavitation phenomenon can damage valve element, valve seat with
And valve pocket inwall, cause valve service life short, typically at one week to three months.But these pressure-reducing valves are in oil hydrogenation row
In industry between high and low pressure system, belong to the throat of device, pressure-reducing valve must assure that steady and continuous operates, could safeguard production
Even running.
At present, the structure that conventional pressure-reducing valve is engaged using a set of valve element valve seat in single valve pocket more, such as Chinese patent
Document CN201351763 discloses a kind of high-pressure-difference pressure reducing valve, and the valve rod being fixedly connected by screw thread and pin with valve element drives valve
Core moves up and down in valve seat, and valve element uses the pyramidal structure that diameter tapers into, and is provided with bushing and throttling in valve seat bottom
Orifice plate, destruction of the high-pressure fluid to valve body is reduced by above-mentioned high-pressure-difference pressure reducing valve, and available for conveying containing solid particle
Medium.
The pressure-reducing valve of above-mentioned prior art in face of high pressure height when containing solid medium, because there was only a set of valve element valve seat in valve pocket,
Therefore, if valve element damages in practical operation, generally requiring to be changed can just work on, actual so as to still be difficult to meet
To the needs of steady and continuous operation in work.
In order to solve the above-mentioned technical problem, it is necessary to two or more decompression generally in actual production process
Valve is standby each other, is used for isolating pressure-reducing valve with front and rear process pipelines when being required to be equipped with maintenance before and after each standby pressure-reducing valve
High pressure hand-operated valve and the condensate drain valve to get up, and need to configure corresponding front and rear high pressure line.Such as Chinese patent literature CN
204752627U discloses a kind of hot high score of floating bed hydrogenation to hot low point depressurized system.The depressurized system by setting cover more
Decompressor, often cover decompressor by set multiple loop reducer units realize hot high score to heat low point in decompression process,
The loop reducer unit includes the angle valve, ball valve and the pressure-reducing valve that set gradually, and between the outlet of angle valve and the entrance of ball valve,
It is connected respectively by a pipeline between the outlet of ball valve and the entrance of pressure-reducing valve, the outlet of pressure-reducing valve and corresponding low pressure point
Charging aperture from device is connected.It is a set of when needing maintenance by setting more set decompressors, switch to another set of, realize length
Periodic duty；Furthermore decompressor is often covered by setting multiple loop reducer units, can simultaneously use, can also be used separately.
But the loop reducer unit in above-mentioned technology sets gradually angle valve, ball valve and pressure-reducing valve, and there is provided a plurality of
High pressure line, in the environment of HTHP, the junction of each high pressure line and valve and each high pressure line and other parts
Junction easily leak, so as to add high-pressure leakage point, while occupied as standby pressure-reducing valve and its circuit
Big quantity space, adds equipment cost.
The content of the invention
Therefore, to be solved by this invention is the pressure reduction structure space-consuming for being used in the prior art high pressure drop depressurized system
Greatly, cost is high and the defects of high-pressure leakage point is more, and so as to provide, a kind of high-pressure leakage point is few, occupies little space, equipment cost
Low pressure-reducing valve.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows：A kind of pressure-reducing valve provided by the present invention,
Including main valve body, valve pocket is formed in the main valve body；Be provided with the main valve body valve outlet that is connected with the valve pocket and
Valve inlet；At least two are provided between the valve inlet and the valve outlet to be suitable to be subtracted the fluid of the valve inlet
Heel row is pressed to the decompressor of valve outlet.
Further, the decompressor includes branch's valve body, and branch's valve body is connected with the main valve body；Described point
The branch's valve pocket connected with the valve pocket is formed in branch valve body；Slided with the branch valve intracavitary for adjusting flow or pass
The valve element for the fluid passage closed between the valve inlet and the valve outlet.
Further, the main valve body and the branch valve body by integral forming.
Further, branch's valve pocket forms fluid necking section and fluid flared section, the fluid necking section with it is described
Valve inlet connects, and the fluid flared section connects with the osculum end of the fluid necking section, the big opening end of the fluid flared section
Connected with the valve outlet.
Further, the fluid flared section and the fluid necking section are respectively provided with tapered section, and the fluid enlarging
The vertex of a cone of section and the vertex of a cone coaxial communication of the fluid necking section.
Further, the fluid necking section diminishes along fluid flow direction internal diameter；The fluid flared section is along fluid stream
Dynamic direction internal diameter becomes big.
Further, branch's valve body includes body, and tubular conduit is formed in the body；Described in coaxial be set in
Include the osculum end of the fluid necking section close to the valve seat of the valve outlet side, the internal cavity of the valve seat in tubular conduit
With the fluid flared section, branch's valve pocket is collectively constituted with the tubular conduit residue section, the valve element is in the tubulose
Slided in passage, the osculum end of the movable end of the valve element and the fluid necking section coordinates for adjusting flow or closing fluid
Passage.Further, the valve seat makes branch's valve pocket form fluid necking section and fluid flared section.Further, also wrap
Governor motion is included, governor motion is detachably connected with the valve element, and the governor motion drives the valve element along the branch valve
Chamber slides axially to adjust forms the gap for regulating and controlling fluid flow size between the valve element and the valve seat.
Further, the governor motion is connected with valve rod, and the valve rod is detachably connected with the valve element.
Further, the angle α of the branch valve cavity axis and the axis of the valve outlet is 5 °~30 °, preferably 8 °
~15 °, most preferably 10 °.
The axis angle β of each adjacent branch's valve pocket is 10 °~60 °, preferably 16 °~30 °, most preferably 20 °.
Further, in addition to entrance channel, access road connect with the valve inlet, and the axis of the entrance channel hangs down
Directly in the valve outlet axis；Outlet flow, connect the decompressor and the valve outlet；The internal diameter of the outlet flow and
The ratio between internal diameter of the entrance channel is more than 1, preferably 2~10, most preferably 3.
Further, pilot sleeve is additionally provided between the valve element and branch's valve pocket, the valve element is suitable in institute
State the slip of pilot sleeve interior sealing.
Further, branch's valve pocket, the pilot sleeve and the valve element are coaxially disposed.
Further, on the inner surface of the outlet flow and branch's valve pocket, on the valve core outer surface and institute
State and be provided with wearing layer on the inwall of the internal cavity of valve seat.
Further, in addition to seal section, seal section fills the gap between the valve element and the pilot sleeve, with axial direction
Seal the gap；Also include sealing gasket, sealing gasket seals the tubular conduit and is coaxially set in the tubular conduit
Gap between valve seat.
For heretofore described axis is generally directed to tubular structure, but other have the structure of bus equally applicable.
Compared with prior art, the present invention has the advantages that：
1) pressure-reducing valve that the embodiment of the present invention is provided, at least two are provided between the valve inlet and the valve outlet
It is individual to be suitable to depressurize heel row to the decompressor of valve outlet by the fluid of the valve inlet.By above-mentioned setting, make pressure-reducing valve
Occupy little space, cost is low and high-pressure leakage point is few.
2) pressure-reducing valve that the embodiment of the present invention is provided, it is suitable to enter the fluid of the valve inlet by setting at least two
Row depressurizes heel row to the decompressor of valve outlet, each decompressor and shares a main valve body, each other independently of each other, do not do mutually
Disturb, can flexibly switch or use simultaneously.
3) pressure-reducing valve that the embodiment of the present invention is provided, by by the axis of the branch valve cavity axis and the valve outlet
Between angle α be arranged to 5 °~30 ° so that converged from the fluid that the branch valve intracavitary of symmetric design comes out in valve outlet centerline
Close, form vortex, cause fluid mutually to collide and generate heat, consume the pressure and speed of fluid after decompression, drop to greatest extent
High-velocity fluid after low decompression washes away and cavitated to pressure-reducing valve；By the way that each adjacent branch valve cavity axis angle β is set
10 °~60 ° are set to, is easy to fluid to converge in valve outlet centerline, vortex is formed, causes fluid mutually to collide and generate heat；It is logical
Cross and the ratio between internal diameter of the internal diameter of outlet flow and entrance channel is set greater than 1, by the way of outlet is expanding at utmost
Reduce decompression after fluid flow velocity, reduce fluid washing away and wearing to outlet flow.
4) pressure-reducing valve that the embodiment of the present invention is provided, by the way that the axis of entrance channel perpendicular to valve outlet axis, is protected
Demonstrate,prove that fluid approach axis is vertical with valve outlet axis, farthest avoided abrasion of the high-pressure fluid to pressure-reducing valve, it is such as right
The erosion of valve element and valve seat；Meanwhile above-mentioned setting avoids solid particle from accumulating in valve for having self-cleaning function containing rheid
Intracavitary, so as to avoid accumulating in the solid particle in valve pocket at high temperature coking and block runner, or infringement valve element and valve seat
Between sealing surface；Above-mentioned setting also to multiple branch's valve pockets are designed, leaves sufficient space.
5) pressure-reducing valve that the embodiment of the present invention is provided, wherein, the decompressor includes branch's valve body, the branch valve
Body is connected with the main valve body；The branch's valve pocket connected with the valve pocket is formed in the branch valve body；With in the branch
The valve element for adjusting flow or the fluid passage closed between the valve inlet and the valve outlet is slided in valve pocket.Further
Branch's valve body includes body, and tubular conduit is formed in the body；Coaxially it is set in the tubular conduit close to institute
The valve seat of valve outlet side is stated, the internal cavity of the valve seat includes the osculum end of the fluid necking section and the fluid enlarging
Section, collectively constitutes branch's valve pocket, the valve element slides in the tubular conduit, described with the tubular conduit residue section
The osculum end of the movable end of valve element and the fluid necking section coordinates for adjusting flow or closing fluid passage.It is possible thereby to set
The various sizes of valve element of the more sets of meter and valve seat and fluid passage on the other side, so can be realized between different flux magnitudes
Non-disturbance online switches, and more flexible convenience, in production with more selectivity and operability, meets that different technique makes
With demand, be particularly suitable for use in obstruction stream working condition.
6) pressure-reducing valve that the embodiment of the present invention is provided, wherein a decompressor goes out between each decompressor independently of each other
Existing problem, the normal use of other decompressors is not influenceed；Furthermore tight, main valve body runner is sealed between valve element and pilot sleeve
Design is without dead angle, thus the deposition without solid particle and coking phenomenon appearance.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is pressure-reducing valve outline drawing described in the embodiment of the present invention；
Fig. 2 is the profile of pressure-reducing valve in the embodiment of the present invention；
Reference：
1- valve inlets；2- valve outlets；3- main valve bodies；4- valve elements；5- pilot sleeves；6- jackscrews；7- valve seats；8- connection spiral shells
Bolt；9- seal sections；10- sealing gaskets；11- wearing layers；12- outlet flows；13- governor motions；14- valve rods.
Embodiment
In order to which the object, technical solutions and advantages of the present invention are better described, below in conjunction with specific embodiment to this hair
It is bright to be described further.The present invention can be embodied in many different forms, and should not be construed as limited to set forth herein
Embodiment.Conversely, there is provided these embodiments so that the disclosure will be thorough and complete, and the design of the present invention will be filled
Divide and be communicated to those skilled in the art, the present invention will only be defined by the appended claims.
The embodiments of the invention provide a kind of pressure-reducing valve, and as depicted in figs. 1 and 2, pressure-reducing valve includes main valve body 3, main valve body 3
Inside form valve pocket；The valve outlet 2 and valve inlet 1 connected with valve pocket is provided with main valve body 3；Valve inlet 1 and valve outlet 2 it
Between be provided with least two be suitable to by the fluid of valve inlet 1 carry out depressurize heel row to valve outlet 2 decompressor.In this embodiment party
In formula, the number of decompressor can be 2；In other embodiment, the number of decompressor can be 3 or more.
In present embodiment, the number of valve inlet 1 is 1, and the number of valve outlet 2 is 1.
In above-mentioned pressure-reducing valve, by above-mentioned setting, pressure-reducing valve is occupied little space, cost is low and high-pressure leakage point is few, respectively
Decompressor shares a main valve body, each other independently of each other, does not interfere with each other, can flexibly switch or use simultaneously；Simultaneously
Avoid being arranged in parallel multiple pressure-reducing valves in the prior art and multiple high pressure hand valves need to being configured, multiple blowdown hand valves, multiple high-voltage tubes
The situation of line.
On the basis of above-mentioned technical proposal, the decompressor includes branch's valve body, and branch's valve body connects with main valve body 3
Connect；The branch's valve pocket connected with valve pocket is formed in branch valve body and is slided in branch valve intracavitary for adjusting flow or shutoff valve
The valve element 4 of fluid passage between entrance 1 and valve outlet 2.In the present embodiment, the number of branch's valve pocket can be 2；Another
In outer embodiment, the number of branch's valve pocket can be 3 or more.
Further, main valve body 3 and branch valve body by integral forming.
On the basis of above-mentioned technical proposal, branch's valve pocket forms fluid necking section and fluid flared section, fluid necking section
Connected with valve inlet 1, fluid flared section connects with the osculum end of fluid necking section, big opening end and the valve outlet 2 of fluid flared section
Connection.
Further, fluid flared section and fluid necking section are respectively provided with tapered section, and the vertex of a cone and stream of fluid flared section
The vertex of a cone coaxial communication of body necking section.
Further, branch's valve body includes body, and tubular conduit is formed in body and coaxial be set in tubular conduit is leaned on
The valve seat 7 of the nearly side of valve outlet 2, the internal cavity of valve seat 7 include osculum end and the fluid flared section of fluid necking section, led to tubulose
Road residue section collectively constitutes branch's valve pocket, and valve element 4 slides in tubular conduit, and the movable end of valve element 4 is small with fluid necking section
Mouth end coordinates for adjusting flow or closing fluid passage.
By above-mentioned setting, the various sizes of valve element 4 of more sets and valve seat 7 can be designed and fluid on the other side leads to
Road, so can realize that Non-disturbance online switches between different flux magnitudes, more flexible convenience, there are more choosings in production
Selecting property and operability, meet different technique use demands, be particularly suitable for use in obstruction stream working condition.
On the basis of above-mentioned technical proposal, in addition to governor motion 13, governor motion 13 are detachably connected with valve element 4,
Governor motion 13 slides axially with movable valve plug 4 along branch's valve pocket to be formed between adjusting spool 4 and valve seat 7 for regulating and controlling fluid flow
The gap of size.In the present embodiment, governor motion 13 can be the form of surging；Can be gas in other implementation
Dynamic form, powered version or manual form, the technology that above-mentioned each regulation form is well known to those skilled in the art, herein no longer
Repeat.In the present embodiment, valve element 4 is connected with governor motion 13 by valve rod 14.One end of valve element 4 passes through connecting bolt
8 are connected with valve rod 14, are conveniently replaceable, and the other end and the governor motion 13 of valve rod 14 are detachably connected, and governor motion 13 drives valve
Bar 14, and then with movable valve plug 4 along branch's valve pocket axial sliding movement, so as to form controllable fluid stream between valve element 4 and valve seat 7
Measure the gap of size.
Further, valve rod 14, valve element 4 and valve seat 7 are coaxially disposed.
On the basis of above-mentioned technical proposal, the angle α of branch valve cavity axis and the axis of valve outlet 2 is 5 °~30 °, excellent
Elect 8 °~15 ° as.Pass through above-mentioned setting so that the fluid come out from the branch valve intracavitary of symmetric design is in valve outlet centerline
Converge, form vortex, cause fluid mutually to collide and generate heat, consume the pressure and speed of fluid after decompression, to greatest extent
Reduce high-velocity fluid the washing away and wearing to pressure-reducing valve after decompression.
On the basis of above-mentioned technical proposal, the axis angle β of each adjacent branch's valve pocket is 10 °~60 °, is preferably
16 °~30 °.By above-mentioned setting, it is easy to fluid to converge in valve outlet centerline, forms vortex, cause fluid mutually to collide
And heating.
On the basis of above-mentioned technical proposal, in addition to entrance channel, connected with valve inlet 1, the axis of entrance channel hangs down
Directly in the axis of valve outlet 2；By above-mentioned setting, it ensure that fluid approach axis is vertical with the axis of valve outlet 2, farthest keep away
Abrasion of the high-pressure fluid to pressure-reducing valve, such as erosion to valve element 4 and valve seat 7 are exempted from；Meanwhile above-mentioned setting containing rheid for having
There is self-cleaning function, avoid solid particle from accumulating in valve pocket, so as to avoid accumulating in the solid particle in valve pocket at high temperature
Coking and block runner or the sealing surface damaged between valve element 4 and valve seat 7；And above-mentioned setting also gives design multiple branch valves
Chamber, leave sufficient space.
On the basis of above-mentioned technical proposal, in addition to outlet flow 12, connect decompressor and valve outlet 2；Outlet stream
The ratio between the internal diameter in road 12 and the internal diameter of entrance channel are more than 1, after farthest decompression is reduced by the way of outlet is expanding
The flow velocity of fluid, reduce fluid washing away and wearing to outlet flow 12.
On the basis of above-mentioned technical proposal, pilot sleeve 5 is additionally provided between valve element 4 and branch's valve pocket, valve element 4 is suitable to
Slided in pilot sleeve interior sealing.
Further, branch's valve pocket, the pilot sleeve and the valve element are coaxially disposed.
On the inner surface of outlet flow 12 and branch's valve pocket, on the outer surface of valve element 4 and on the inwall of the internal cavity of valve seat 7
It is provided with wearing layer 11.In the present embodiment, wearing layer 11 can be formed using pyrolytic coating, ensure enough hardness and strong
Degree, compared with traditional by the way of built-up welding Si Tailai alloys or lined cylinder, more resistance to erosion, wear-resistant, service life
It is longer.
Further, valve seat 7 and valve element 4 are coaxially disposed.
Certainly, it is necessary to which explanation is a little that the structure of valve seat 7 and valve element 4 also may be selected that well known to a person skilled in the art it
His structure, such as it is directed to and uses plunger shape or paraboloidal containing solid High Pressure Difference operating mode, spool end；For the height without solid
Pressure difference occasion, according to pressure drop situation, single valve element or multilevel decompression valve element can be used, avoid flash distillation and cavitation, extended
The service life of valve, detailed construction will not be repeated here.
Further, in addition to seal section 9, seal section 9 fills the gap between valve element 4 and the pilot sleeve, with axial direction
Sealing off gap, in the present embodiment, seal section 9 can be the filler between the gap between filling valve element 4 and pilot sleeve 5.
Further, in addition to sealing gasket 10, sealing gasket 10 seal the tubular conduit and are coaxially set in the tubulose
The gap between valve seat 7 in passage, in the present embodiment, sealing gasket 10 can be graphite wound gasket.
On the basis of above-mentioned technical proposal, it can be entered between process pipe and valve inlet 1 or valve outlet 2 by various modes
Row connection, such as flange connection, Grayloc connections or welding, are connected for flange in the present embodiment；Similarly, outlet flow
12 with other pipelines when being connected, and can also use any of above-mentioned a variety of connected modes.
In addition, it is necessary to explanation is a little that the fluid flared section of valve seat 7 acts the conical region for buffering depressurization for one,
The special stiffened material of fluid flared section inner-wall spraying, form wearing layer 11, a greater degree of resistance to erosion；Between valve seat 7 and valve element 4
Using hard sealing, the fluid necking section osculum end of valve seat 7 is directed to the axial restraint of sleeve 5, the radial direction of the fluid necking section of valve seat 7
Radially fixed in the bottom of pilot sleeve 5 by jackscrew 6, the end face of jackscrew 6 is secured into the fluid necking section of valve seat 7 in valve body 3
In the fixed groove of wall.Make valve seat 7 axially consistent with valve element 4 by above-mentioned setting, seal guide sleeve cylinder 5 and the abutting end of valve seat 7
Between gap, the gap between seal guide sleeve cylinder 5 and branch valve cavity wall, sealed by sealing gasket 10, prevent fluid leakage from going out
Go.
Fluid enters each independent branch's valve pocket through shared entrance channel, then converges to outlet flow through decompressor
12, complete decompression process.It is as follows to hot low point pressure process, detailed process by the way that above-mentioned pressure-reducing valve is used for into hot high score：Heat
High score is the reacted material of suspension bed coal tar hydrogenating, its composition include reacted oil product, the complete coal tar of unreacted,
Hydrogen and catalyst, its solid amount are up to 15wt%, and pressure is up to 20MPa, and temperature is 410 DEG C, by the way that above-mentioned material to be used to subtract
Press through journey, the pressure-reducing valve in the embodiment of the present invention utilizes its governor motion 13 control valve rod 14 by the liquid level signal of hot high score
Band movable valve plug 4 moves together, and above-mentioned material enters branch's valve pocket through entrance channel, passes through the gap between valve element 4 and valve seat 7
Change, the flow of the material passed through is controlled, so as to ensure level stability.The open position of single valve between 8% to 30%,
Flow maintains 3000kg/h between 7000kg/h, and after decompression, the low partial pressure of heat is 0.8MPa, in HTHP Gao Hangu
Operating mode under, there is more convenient demolition and maintenance, more preferable abrasion resistance, more preferable performance；Pressure-reducing valve of the prior art,
In 50h-168h as Chinese patent literature CN201351763 discloses a kind of life-span of high-pressure-difference pressure reducing valve, and it is of the invention
Life-span of pressure-reducing valve be 800h-2500h.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (9)
1. a kind of pressure-reducing valve, including, main valve body (3), the main valve body (3) is interior to form valve pocket；Set on the main valve body (3)
There is the valve outlet (2) and valve inlet (1) connected with the valve pocket；Characterized in that, in the valve inlet (1) and the valve outlet
(2) at least two decompressions for being suitable to by the fluid of the valve inlet (1) depressurize heel row to valve outlet (2) are provided between to fill
Put；The decompressor includes branch's valve body, and branch's valve body is connected with the main valve body (3)；In the branch valve body into
Type has the branch's valve pocket connected with the valve pocket；Slide to enter for adjusting flow or closing the valve with the branch valve intracavitary
The valve element (4) of fluid passage between mouth (1) and the valve outlet (2).
2. pressure-reducing valve according to claim 1, it is characterised in that the main valve body (3) and branch's valve body into
Type.
3. pressure-reducing valve according to claim 1 or 2, it is characterised in that branch's valve pocket forms fluid necking section and stream
Body flared section, the fluid necking section connect with the valve inlet (1), and the fluid flared section is small with the fluid necking section
The connection of mouth end, the big opening end of the fluid flared section connect with the valve outlet (2).
4. pressure-reducing valve according to claim 3, it is characterised in that branch's valve body includes：Body, shape in the body
Into tubular conduit and coaxially it is set in the tubular conduit close to the valve seat (7) of the valve outlet (2) side, the valve seat
(7) internal cavity includes the osculum end of the fluid necking section and the fluid flared section, is total to the tubular conduit residue section
With branch's valve pocket is formed, the valve element (4) is slided in the tubular conduit, the movable end of the valve element (4) with it is described
The osculum end of fluid necking section coordinates for adjusting flow or closing fluid passage.
5. pressure-reducing valve according to claim 4, it is characterised in that also including governor motion (13), governor motion (13) with
The valve element (4) is detachably connected, and the governor motion (13) drives the valve element (4) to be slid axially tune along branch's valve pocket
Save the gap formed between the valve element (4) and the valve seat (7) for regulating and controlling fluid flow size.
6. the pressure-reducing valve according to claim 4 or 5, it is characterised in that the branch valve cavity axis and the valve outlet (2)
Axis angle α be 5 °~30 °；The axis angle β of each adjacent branch's valve pocket is 10 °~60 °.
7. the pressure-reducing valve according to claim 4 or 5, it is characterised in that also including entrance channel, with the valve inlet (1)
Connection, the axis of the entrance channel is perpendicular to the valve outlet (2) axis；Also include outlet flow (12), subtract described in connection
Pressure device and the valve outlet (2)；The ratio between the internal diameter of the outlet flow (12) and the internal diameter of the entrance channel are more than 1.
8. according to the pressure-reducing valve described in claim 2 or 4 or 5, it is characterised in that the valve element (4) and branch's valve pocket it
Between be additionally provided with pilot sleeve (5), the valve element (4) is suitable to slide in the pilot sleeve interior sealing.
9. pressure-reducing valve according to claim 7, it is characterised in that the outlet flow (12) and branch's valve pocket it is interior
Wearing layer (11) is provided with surface, on the valve element (4) outer surface and on the inwall of the internal cavity of the valve seat (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711072257.8A CN107606256A (en) | 2017-11-03 | 2017-11-03 | A kind of pressure-reducing valve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711072257.8A CN107606256A (en) | 2017-11-03 | 2017-11-03 | A kind of pressure-reducing valve |
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| CN107606256A true CN107606256A (en) | 2018-01-19 |
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| CN201711072257.8A Pending CN107606256A (en) | 2017-11-03 | 2017-11-03 | A kind of pressure-reducing valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662195A (en) * | 2018-05-09 | 2018-10-16 | 珠海市万顺睿通科技有限公司 | A kind of fluid valve for sea water desalination |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201351763Y (en) * | 2009-02-23 | 2009-11-25 | 神华集团有限责任公司 | High pressure drop reducing valve |
| CN102011882A (en) * | 2010-11-19 | 2011-04-13 | 神华集团有限责任公司 | Pressure reducing valve and use thereof as well as fluid conveying system |
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| CN201351763Y (en) * | 2009-02-23 | 2009-11-25 | 神华集团有限责任公司 | High pressure drop reducing valve |
| CN102011882A (en) * | 2010-11-19 | 2011-04-13 | 神华集团有限责任公司 | Pressure reducing valve and use thereof as well as fluid conveying system |
| CN105308375A (en) * | 2013-06-20 | 2016-02-03 | 株式会社岛津制作所 | Pressure control valve and control valve |
| CN204083259U (en) * | 2014-07-30 | 2015-01-07 | 李冶 | A kind of depressed control device |
| CN107725833A (en) * | 2016-08-10 | 2018-02-23 | 北京华石联合能源科技发展有限公司 | A kind of pressure-reducing valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108662195A (en) * | 2018-05-09 | 2018-10-16 | 珠海市万顺睿通科技有限公司 | A kind of fluid valve for sea water desalination |
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