CN110206920A - Self-operated pressure reducing valve with superpressure safety cut-off function - Google Patents
Self-operated pressure reducing valve with superpressure safety cut-off function Download PDFInfo
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- CN110206920A CN110206920A CN201910343499.9A CN201910343499A CN110206920A CN 110206920 A CN110206920 A CN 110206920A CN 201910343499 A CN201910343499 A CN 201910343499A CN 110206920 A CN110206920 A CN 110206920A
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The object of the present invention is to provide the Self-operated pressure reducing valves with superpressure safety cut-off function that a kind of existing decompression has cutting function again.A kind of Self-operated pressure reducing valve with superpressure safety cut-off function, including valve body, upstream passageway and downstream passage are formed in the valve body, upstream passageway is connect with upstream tube, downstream passage is connect with downstream tube, and the upstream passageway is connected to by interface channel with downstream passage, and the valve body is connected with decompression valve portion and cutting valve portion, the downstream tube is connected to by the first branch pipe with decompression valve portion inner cavity, and the first spring diaphragm component and the first valve rod are equipped in the decompression valve portion；The cutting valve portion includes the first cutting valve portion and the second cutting valve portion, the second valve rod is equipped in the inner cavity of the first cutting valve portion, flow-guiding channel is equipped between the first cutting valve portion and upstream tube, second spring diaphragm unit is equipped in the second cutting valve portion, the downstream tube is connected to by third branch pipe with the inner cavity of the second cutting valve portion.
Description
Technical field
The present invention relates to a kind of Self-operated pressure reducing valves, and in particular to a kind of existing decompression has having for cutting function again
The Self-operated pressure reducing valve of superpressure safety cut-off function.
Background technique
Self-operated pressure reducing valve is the flow that medium is adjusted using the movement of the intracorporal opening and closing element of control valve, by the pressure of medium
Power reduces, while the aperture of opening and closing element is adjusted by the effect of downstream pressure, keeps downstream pressure in a certain range, to protect
Protect downstream components.Existing pressure reducing valve only has decompression, and does not have the cutting function of medium in valve body.Existing decompression
Valve is as application No. is disclosed in the Chinese patent of 201721503907 .5, including valve body, connecting rod, inner cavity, spring, diaphragm, valve
Core, air inlet and air outlet setting between air inlet and gas outlet, are being touched in valve body two sides, spool setting in valve body by medium
Dynamic diaphragm is to realize the movement of connecting rod, thus the movement with movable valve plug, to realize decompression operation.
After superpressure, valve body is not turned off, and the medium for still having pressure exceeded continues into downstream tube, breather valve and is promptly let out
The relieving capacity for putting valve is still not enough to discharge medium, continues to rise with pressure, when pressure reaches certain value, connection downstream tube
Storage tank and other components can be damaged.
Valve generally comprises valve body, the valve rod that channel is formed in valve body and can be moved axially, logical for cutting off on valve rod
The spool in road.
Summary of the invention
The object of the present invention is to provide a kind of existing decompression have again cutting function with superpressure safety cut-off function
Self-operated pressure reducing valve.
To achieve the above object, the present invention adopts the following technical scheme: a kind of relying on oneself with superpressure safety cut-off function
Formula pressure reducing valve, including valve body are formed with upstream passageway and downstream passage in the valve body, and upstream passageway is connect with upstream tube, under
Trip channel is connect with downstream tube, and the upstream passageway is connected to by interface channel with downstream passage, and the valve body is connected with decompression
Valve portion and cutting valve portion, the downstream tube be connected tos by the first branch pipe with decompression valve portion inner cavity, and the decompression valve portion is interior equipped with the
One spring diaphragm component and the first valve rod, the first spring diaphragm component include primary diaphragm and first back-moving spring, and first
Diaphragm and the first valve rod link, first back-moving spring compress so that the axial movement of the first valve rod with reduce upstream passageway for Jie
The sectional area that matter passes through；The cutting valve portion includes the first cutting valve portion and the second cutting valve portion, and described first cuts off valve portion
The second valve rod is equipped in inner cavity, one end that second valve rod is located at the first cutting valve portion is fixed with limited block, and described first cuts
It is equipped with flow-guiding channel between disconnected valve portion and upstream tube, road channel includes the second branch pipe being connected to upstream tube, second cutting
Second spring diaphragm unit is equipped in valve portion, the downstream tube is connected to by third branch pipe with the inner cavity of the second cutting valve portion, institute
Stating second spring diaphragm unit includes secondary diaphragm, second back-moving spring, and secondary diaphragm and third valve rod link, and second resets bullet
Spring is compressed so that the axial movement of third valve rod is to open flow-guiding channel, and flow-guiding channel is opened so that the medium in upstream tube is logical
Push the second valve rod mobile to close interface channel after crossing flow-guiding channel.
When carrying out valve normal use of the present invention, medium passes sequentially through upstream tube, valve body and downstream tube, when medium superpressure
When, it is more into the medium in decompression valve portion inner cavity, pressure is bigger, so that the primary diaphragm in the first spring diaphragm component occurs
Deformation, so that the first valve rod is moved to connecting tube trackside, so that upstream becomes smaller for the sectional area that medium passes through, to realize
Decompression；After decompression, if downstream tube still superpressure, medium enters the second cutting valve portion inner cavity to push secondary diaphragm and make the
Two spring-compresseds, to drive third valve rod mobile, so that the pipeline between upstream tube and the first cutting valve portion inner cavity is opened, so that
Medium in upstream tube enters the inner cavity of the first cutting valve portion, and the superpressure medium of upstream tube pushes the second valve rod mobile to realize valve
The closing of the connecting line of body, to realize the cutting function of valve body.When pressure medium reduces in downstream tube, in second back-moving spring
Under the action of, secondary diaphragm resets and third valve rod is driven to reset, and to realize the closing of flow-guiding channel, loses upstream tube medium
Promotion, the second valve rod can reset；Meanwhile when pressure medium reduces in downstream tube, into the pressure medium drop of decompression valve portion
Low, under the action of first back-moving spring, primary diaphragm gradually resets, so that the first valve rod gradually resets, on being stepped up
Swim the sectional area passed through for medium in channel.
Preferably, being arranged with preloading spring on second valve rod, described preloading spring one end and the limited block are solid
Fixed, the preloading spring other end is mutually fixed close to interface channel side and with the first cutting valve portion.Preloading spring provides certain auxiliary
Power-assisted, so that the second valve rod more can be moved timely, so that the connecting line of valve body is closed.It is well known, Ke Yitong
Cross the fixation that setting spring base realizes spring end.
Preferably, the first cutting valve portion is equipped with porus excretorius and is combined with plug；The limited block is cut first
The inner cavity of disconnected valve portion is divided into two mutually independent spaces, Jie when flow-guiding channel conducting, in the second cutting valve portion inner cavity
Matter pushes limited block to push the axial movement of the second valve rod；When flow-guiding channel is closed, the medium of the upstream passageway of valve body is pushed away
Dynamic second valve rod resets.Limited block is applied not only to that the second valve rod is prevented to be detached from the first cutting valve portion, and limited block also acts as piston
Effect, superpressure medium push limited block to realize the movement of the second valve rod.Porus excretorius is used to upstream tube entering to the first cutting
Medium discharge in valve portion, in order to which the medium in valve body upstream pushes the second valve rod to reset.It wherein, can be by manually
Mode opens porus excretorius, and the opening of porus excretorius can also be realized by way of solenoid valve is arranged.
Preferably, the valve body is formed with the first fluting and the second fluting, first fluting is connected with upstream passageway,
Second fluting is connected with downstream passage, and the decompression valve portion is fixed at the first fluting, and the first cutting valve portion is fixed
At the second fluting, first fluting is set to the wherein side of valve body opposite sides, first valve rod with the second fluting
It is coaxially disposed with the second valve rod and interface channel.Above-mentioned setting is so that the processing of valve body is more convenient, while making the second valve rod
It resets more convenient.
Preferably, being fixed with the first connecting rod on the primary diaphragm, the first connecting rod connects by first
Linkage and first valve rod link, and first valve rod is located in the guide groove of guide pad, and primary diaphragm deformation is so that the
One valve rod is moved axially along the guide groove of guide pad, and the guide pad is mutually fixed with decompression valve portion and valve body.
Wherein, spring diaphragm component is existing structure, and the fixed form of first connecting rod, first is selected to reset as needed
The fixed form of spring.Guide pad and decompression valve portion of the invention is mutually independent components, and guide pad, which can be used, to be different from
The other materials of decompression valve portion material are made.
Preferably, the decompression valve portion is equipped with first boss in a ring, it is formed on the valve body and upstream passageway
First fluting of connection, for first one section thick one section of the fluting carefully to be formed with step structure, the guide pad forms oriented week
The outer bulge loop extended outward, the first boss and valve body are fixed the outer bulge loop of guide pad is limited in first boss and valve
Between first fluting step surface of body.It is compressed by the outer bulge loop to guide pad to realize guide pad and valve body and decompression valve portion
Fixation, the fixation of guide pad is more convenient.
Preferably, the first connecting rod mechanism include the first fixed link and the first motion bar, first fixed link with
Guide pad is fixed, and the first connecting rod, the first fixed link and the first valve rod are vertically arranged, and first motion bar deviates left
The part at right both ends is rotatably fixed with the first fixed link, first motion bar both ends respectively with first connecting rod and the first valve
Bar linkage, the first connecting rod end and the first valve stem end are vertically equipped with linkage post, and first motion bar both ends are set
There is strip groove, strip groove is along the first movable rod axis setting, and the linkage post cooperation is in strip groove.
First fixed link is fixed with guide pad, so that the manufacture and processing of decompression valve portion are more convenient.Work as first connecting rod
When moving up and down, wherein one end that the linkage post of first connecting rod will drive the first motion bar left and right ends is moved up and down, so that
The other end in first motion bar left and right ends moves in the opposite direction, to realize the linkage of the first valve rod.
Preferably, being fixed with the second connecting rod on the secondary diaphragm, second connecting rod passes through second connecting rod machine
Structure and the third valve rod link, and second cutting valve portion side is equipped with third and cuts off valve portion, and the flow-guiding channel includes third
The 4th connected between cutting valve portion and second branch pipe of upstream tube connection, third cutting valve portion and the first cutting valve portion
Pipe, the third valve rod move axially the inner cavity pipeline conducting or cut-off so that third cutting valve portion.
Wherein, spring diaphragm component is existing structure, and the fixed form of the second connecting rod, second is selected to reset as needed
The fixed form of spring.Third valve rod is effect third cutting valve portion, so that the component structural of the second cutting valve portion is more
Simply, the production and processing for the second cutting valve portion of being more convenient for.
Preferably, the inner cavity pipeline of the third cutting valve portion is equipped with on-off slot so that inner cavity pipeline is divided into front and back two
Section is formed with one be connected to inner cavity pipeline leading portion is open, is connected to inner cavity pipeline back segment another in on-off groove groove wall
Opening, secondary diaphragm is driven to reset for the second back-moving spring so that the axial movement of third valve rod is to close one in two openings
It is a.The mode for closing opening is more convenient compared with the mode of truncation on-off slot, more laborsaving, so that the movement of third valve rod is more square
Just, so that the movement of the second valve rod is more timely.
Preferably, being fixed with valve block in the valve body, the valve block is formed with the interface channel, and the valve block is opposite
Both ends are formed with annular protrusion, and the gasket of annular is equipped on first valve rod and the second valve rod axial end face, described close
The outer diameter of packing is greater than the outer diameter of the annular protrusion, and the second valve rod closing interface channel is so that gasket and annular protrusion
It offsets.Valve block and valve body are independent from each other components, by individually processing valve block, so that the cutting of the interface channel of valve body is more
It is easy.
The present invention has the advantages that existing decompression has cutting function again.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of the invention；
Fig. 2 is a kind of structural schematic diagram of the invention；
Fig. 3 is a kind of structural schematic diagram of present invention decompression valve portion and valve body；
Fig. 4 is a kind of structural schematic diagram of the first cutting valve portion and valve body of the invention；
Fig. 5 is a kind of structural schematic diagram that the present invention second cuts off valve portion and third cuts off valve portion；
Fig. 6 is a kind of structural schematic diagram of valve block of the invention.
Specific embodiment
Below according to the drawings and specific embodiments, the invention will be further described.
As shown in Fig. 1 to Fig. 5, a kind of Self-operated pressure reducing valve with superpressure safety cut-off function of the invention, including valve
Body 1 is formed with upstream passageway 11 and downstream passage 12 in valve body 1, and upstream passageway 11 is connect with upstream tube 13, downstream passage 12 with
Downstream tube 14 connects, and upstream passageway 11 is connected to by interface channel 20 with downstream passage 12, and valve body 1 is connected with decompression 3 He of valve portion
Cut off valve portion.
Downstream tube 14 is connected to by the first branch pipe 15 with decompression 3 inner cavity of valve portion, is equipped with the first spring diaphragm in decompression valve portion 3
Component and the first valve rod 31, the first spring diaphragm component include primary diaphragm 32 and first back-moving spring 33, primary diaphragm 32 with
The linkage of first valve rod 31, first back-moving spring 33 is compressed so that the first valve rod 31 is moved axially to reduce the confession of upstream passageway 11
The sectional area that medium passes through.Cutting off valve portion includes the first cutting valve portion 4 and the second cutting valve portion 5, the inner cavity of the first cutting valve portion 4
In be equipped with the second valve rod 41, the second valve rod 41 be located at first cutting valve portion 4 in one end be fixed with limited block 42, the first stop valve
Flow-guiding channel is equipped between portion 4 and upstream tube 13, road channel includes the second branch pipe 40 being connected to upstream tube 13, the second stop valve
Second spring diaphragm unit is equipped in portion 5, downstream tube 14 is connected to by third branch pipe 50 with the inner cavity of the second cutting valve portion 5, the
Two spring diaphragm components include secondary diaphragm 52, second back-moving spring 53, and secondary diaphragm 52 and third valve rod 51 link, and second is multiple
Position spring 53 is compressed so that the axial movement of third valve rod 51 is to open flow-guiding channel, and flow-guiding channel is opened so that upstream tube 13
Interior medium pushes the second valve rod 41 mobile to close interface channel 20 after passing through flow-guiding channel.
As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 6,1 upper and lower ends of valve body of the present embodiment are respectively formed with the first fluting and second
Fluting, the first fluting are connected with upstream passageway 11, and the second fluting is connected with downstream passage 12, and decompression valve portion 3, which is fixed on first, to be opened
At slot and it is located at the upside of valve body 1, the first cutting valve portion 4 is fixed at the second fluting and is located at 1 downside of valve body, the first fluting and the
Two flutings are set to the wherein side of about 1 opposite sides of valve body, the first valve rod 31 and the second valve rod 41 and interface channel 20 is same
Axis setting, upstream tube 13 are located at 1 right side of valve body, and downstream tube 14 is located at 1 left side of valve body.Valve block 2, valve block 2 and valve are equipped in valve body 1
Body is screwed, and valve block 2 is formed with perforative interface channel 20, about 2 opposite end of valve block up and down and is each formed with annular protrusion
21, the gasket 22 of annular is equipped on 41 axial end face of the first valve rod 31 and the second valve rod, the outer diameter of gasket 22 is greater than ring
The outer diameter of shape protrusion 21, the second valve rod 41 close interface channel 20 so that gasket 20 offsets with 21 axial face of annular protrusion.
As shown in Fig. 2, Fig. 4, preloading spring 43 is arranged on the second valve rod 41,43 lower end of preloading spring and limited block 42 are solid
Fixed, 43 upper end of preloading spring is close to interface channel and fixed with the first cutting valve portion 4.Wherein, limited block and the first cutting valve portion
Inside is equipped with the spring base (being not drawn into figure) for matching with limit spring 43.Limited block 42 cuts off valve portion 4 for first
Inner cavity be divided into two mutually independent spaces, when flow-guiding channel conducting when, second cutting 5 inner cavity of valve portion in medium push
Limited block 42 is to push the second valve rod 41 axially upwardly to move；When flow-guiding channel is closed, Jie of the upstream passageway 13 of valve body 1
Matter pushes the second valve rod 41 to move down to reset.Wherein, the first stop valve 4 are equipped with porus excretorius and are combined with plug 49.
As shown in Fig. 2, Fig. 3, the shell of the decompression valve portion of the present embodiment is made of upper and lower two parts, outside primary diaphragm 32
Edge is fixedly clamped between the two housing sections up and down of decompression valve portion 3, and about 32 two sides of primary diaphragm are respectively equipped with fixed tray 82
With fixinig plate 81, through-hole is each formed at 32 center of fixinig plate 81, fixed tray 82 and primary diaphragm and is combined with the first connection
Bar 34, fixed tray 82, primary diaphragm 32, fixinig plate 81 by two locking nuts 83 and first connecting rod 34 be threadedly engaged with
It is limited between 34 convex platform of first connecting rod and locking nut.The upper part of the housing of decompression valve portion, which is divided, is formed with tubular construction, and first
33 lower end of reset spring is located on fixed tray 82, and 33 upper end of first back-moving spring is located in tubular construction.
34 lower end of first connecting rod is linked by first connecting rod mechanism and the first valve rod 31, and the first valve rod 31 is located at guide pad
In 35 guide groove 550,32 deformation of primary diaphragm is so that the first valve rod 31 is led along the axial movement of guide groove 550 of guide pad 35
It is fixed to block 35 and decompression valve portion 3 and 1 phase of valve body.Valve portion 3 is depressurized equipped with first boss 36 in a ring, the first one section of fluting is thick
One section carefully to be formed with step structure, guide pad 35 forms the outer bulge loop 351 that oriented outer circumferential extends, first boss 36 and valve
Body 1 is fixed the outer bulge loop 351 of guide pad 35 to be limited between first boss 36 and the first fluting step surface of valve body 1.
First connecting rod mechanism includes the first fixed link 37 and the first motion bar 38, and the first fixed link 37 and guide pad 35 are solid
Fixed, first connecting rod 34, the first fixed link 37 and the first valve rod 31 are vertically arranged, and the first motion bar 38 deviates left and right ends
Part and the first fixed link 37 are rotatably fixed, 38 left and right ends of the first motion bar respectively with first connecting rod 38 and the first valve rod
31 linkages, 34 end of first connecting rod and 31 end of the first valve rod are vertically equipped with the first linkage post 39, the first 38 liang of motion bar
End is equipped with strip groove, and strip groove is arranged along 38 axis of the first motion bar, and each first linkage post cooperates in a strip groove.
As shown in Fig. 2, Fig. 5, the shell of the second cutting valve portion of the present embodiment is made of upper and lower two parts, secondary diaphragm 52
Outer rim be fixedly clamped between the two housing sections up and down of the second cutting valve portion 5, about 52 two sides of secondary diaphragm are respectively equipped with fixation
Piece 81 and fixed tray 82 are each formed with through-hole at 52 center of fixinig plate 81, fixed tray 82 and secondary diaphragm and are combined with
Two connecting rods 54, the second connecting rod 54 are matched after passing through fixed tray 82, secondary diaphragm 52, fixinig plate 81 with two locking nuts 83
It closes, fixed tray 82, secondary diaphragm 52, fixinig plate 81 is limited between the boss and locking nut of the second connecting rod 54.
The lower part of the housing point of second cutting valve portion 5 is formed with tubular construction, and 53 upper end of second back-moving spring is located on fixed tray 82, the
Two reset springs, 53 lower end is located in tubular construction.
Second connecting rod 54 is linked by second connecting rod mechanism and third valve rod 51, and the is equipped on the right side of the second cutting valve portion 5
Three cutting valve portions 6, flow-guiding channel include the second branch pipe 40, the third cutting valve portion 6 that third cutting valve portion 6 is connect with upstream tube 13
The 4th branch pipe 60 connected between the first cutting valve portion 4, third valve rod 51 move axially the lumen tube so that third cutting valve portion 6
The conducting of road 6 is cut off.The inner cavity pipeline 61 of third cutting valve portion 6 is equipped with on-off slot 62 so that inner cavity pipeline 61 is divided into front and back
Two sections, it is formed with an opening being connected to 61 leading portion of inner cavity pipeline on 62 cell wall of on-off slot, is connected to 62 back segment of inner cavity pipeline
Another opening, second back-moving spring 53 drive secondary diaphragm 52 reset so that third valve rod 41 axial movement to close two
One in opening.
Second connecting rod mechanism includes L shape STATEMENT OF FEDERALLY SPONSORED 56, and third valve rod 51 is vertically arranged with the second connecting rod 54, the linkage of L shape
Part 56 deviates the part at both ends and the second cutting 5 upper part of the housing of valve portion point is rotatably fixed, and 51 left end of third valve rod is formed with edge
The strip groove of left and right directions setting, 56 right end of L shape STATEMENT OF FEDERALLY SPONSORED are equipped with strip groove, and 51 left end of third valve rod is equipped with the second linkage post
57, the second linkage post 57 cooperates in the strip groove of L shape STATEMENT OF FEDERALLY SPONSORED 56, and it is upwardly opening that L shape STATEMENT OF FEDERALLY SPONSORED 56 is formed by angle, and second
Third linkage post 58 there are two setting in connecting rod 54, the left end of L shape STATEMENT OF FEDERALLY SPONSORED 56 is between upper and lower two linkage posts 58.
The present invention is carried out in use, medium passes sequentially through upstream tube, valve body and downstream tube, when medium superpressure, into subtracting
Medium in pressure valve portion inner cavity is more, pressure is bigger, so that deformation occurs for the primary diaphragm in the first spring diaphragm component, and makes
First back-moving spring compression, by first connecting rod mechanism so that the first valve rod moves down, so that upstream is logical for medium
The sectional area crossed becomes smaller, to realize decompression；After decompression, or decompression partial fault, the second medium cut off in valve portion are still located
When superpressure state, superpressure medium can oppress secondary diaphragm and second spring, to pass through second connecting rod mechanism to drive third valve
Bar is moved to the left, so that the flow-guiding channel between upstream tube and the first cutting valve portion inner cavity is opened, so that the medium in upstream tube
Into the inner cavity of the first cutting valve portion, the superpressure medium of upstream tube pushes the second valve rod to move up the connecting tube to realize valve body
The closing on road, to realize the cutting function of valve body.
Pressure medium after valve body is cut off, when the pressure medium in downstream tube becomes smaller, in the second cutting valve portion inner cavity
When becoming smaller, that is, when media pressure downstream is restored to normal value or less, under the action of second back-moving spring, secondary diaphragm band
Dynamic second connecting rod resets, so that third valve rod is resetted to cut off flow-guiding channel, so that the second valve rod is no longer influenced by upward push away
Power, under the influence of the impact and self gravity of valve body upstream medium, the second valve rod can reset so that valve body is opened.Together
When, when media pressure downstream becomes smaller, the pressure medium depressurized in valve portion inner cavity can also become smaller, in the effect of first back-moving spring
Under, primary diaphragm and first connecting rod reset, to realize the reset of the first valve rod, so that the upstream passageway of valve body is logical for medium
The sectional area crossed becomes larger, and when upstream pressure medium is in normal range value, the upstream passageway of valve body passes through for medium
Sectional area it is maximum.Wherein, by opening porus excretorius, so that the second valve rod is capable of resetting to home position.
The present invention has the advantages that existing decompression has cutting function again.
Claims (10)
1. a kind of Self-operated pressure reducing valve with superpressure safety cut-off function, it is characterised in that including valve body, shape in the valve body
At having upstream passageway and downstream passage, upstream passageway is connect with upstream tube, and downstream passage is connect with downstream tube, the upstream passageway
It is connected to by interface channel with downstream passage, the valve body is connected with decompression valve portion and cutting valve portion, and the downstream tube passes through the
One branch pipe be connected to decompression valve portion inner cavity, and the decompression valve portion is interior equipped with the first spring diaphragm component and the first valve rod, and described the
One spring diaphragm component includes primary diaphragm and first back-moving spring, and primary diaphragm and the first valve rod link, first back-moving spring
It is compressed so that the first valve rod is moved axially to reduce the sectional area of upstream passageway passed through for medium；The cutting valve portion includes
First cutting valve portion and the second cutting valve portion, described first cuts off in the inner cavity of valve portion equipped with the second valve rod, second valve rod
It is fixed with limited block positioned at one end of the first cutting valve portion, is equipped with flow-guiding channel, road between the first cutting valve portion and upstream tube
Paths include the second branch pipe being connected to upstream tube, are equipped with second spring diaphragm unit in the second cutting valve portion, described
Downstream tube by third branch pipe with second cut off valve portion inner cavity be connected to, the second spring diaphragm unit include secondary diaphragm,
Second back-moving spring, secondary diaphragm and third valve rod link, second back-moving spring compress so that third valve rod move axially with
Open flow-guiding channel, flow-guiding channel be opened so that medium in upstream tube by push the second valve rod mobile after flow-guiding channel with
Close interface channel.
2. the Self-operated pressure reducing valve according to claim 1 with superpressure safety cut-off function, it is characterised in that described
Preloading spring is arranged on two valve rods, described preloading spring one end is fixed with the limited block, and the preloading spring other end leans on
Nearly interface channel side is simultaneously mutually fixed with the first cutting valve portion.
3. the Self-operated pressure reducing valve according to claim 1 with superpressure safety cut-off function, it is characterised in that described
One cutting valve portion is equipped with porus excretorius and is combined with plug；The inner cavity of first cutting valve portion is divided into two phases by the limited block
Mutual independent space, when flow-guiding channel conducting, the medium in the second cutting valve portion inner cavity pushes limited block to push second
Valve rod axial movement；When flow-guiding channel is closed, the medium of the upstream passageway of valve body pushes the second valve rod to reset.
4. the Self-operated pressure reducing valve according to claim 1 with superpressure safety cut-off function, it is characterised in that the valve
Body is formed with the first fluting and the second fluting, and first fluting is connected with upstream passageway, second fluting and downstream passage
It is connected, the decompression valve portion is fixed at the first fluting, and the first cutting valve portion is fixed at the second fluting, and described first opens
Slot and the second fluting are set to the wherein side of valve body opposite sides, and first valve rod and the second valve rod and interface channel are coaxial
Setting.
5. the Self-operated pressure reducing valve according to claim 1 with superpressure safety cut-off function, it is characterised in that described
The first connecting rod is fixed on one diaphragm, the first connecting rod is joined by first connecting rod mechanism and first valve rod
Dynamic, first valve rod is located in the guide groove of guide pad, primary diaphragm deformation so that the first valve rod along guide pad guide groove
Axial movement, the guide pad are mutually fixed with decompression valve portion and valve body.
6. the Self-operated pressure reducing valve according to claim 5 with superpressure safety cut-off function, it is characterised in that described to subtract
Pressure valve portion is equipped with first boss in a ring, and first be connected to upstream passageway is formed on the valve body and is slotted, and described first
For one section thick one section of fluting carefully to be formed with step structure, the guide pad forms the outer bulge loop that oriented outer circumferential extends, described
First boss and valve body are fixed the outer bulge loop of guide pad to be limited between first boss and the first fluting step surface of valve body.
7. the Self-operated pressure reducing valve according to claim 5 with superpressure safety cut-off function, it is characterised in that described
One link mechanism includes the first fixed link and the first motion bar, and first fixed link is fixed with guide pad, first connection
Bar, the first fixed link and the first valve rod are vertically arranged, and first motion bar, which deviates the part of left and right ends and first, to be fixed
Bar is rotatably fixed, and first motion bar both ends are linked with first connecting rod and the first valve rod respectively, the first connecting rod
End and the first valve stem end are vertically equipped with linkage post, and first motion bar both ends are equipped with strip groove, and strip groove is along first
Movable rod axis setting, the linkage post cooperation is in strip groove.
8. the Self-operated pressure reducing valve according to claim 1 with superpressure safety cut-off function, it is characterised in that described
The second connecting rod is fixed on two diaphragms, second connecting rod is linked by second connecting rod mechanism and the third valve rod, institute
It states the second cutting valve portion side and cuts off valve portion equipped with third, the flow-guiding channel includes the institute that third cutting valve portion is connect with upstream tube
State the 4th branch pipe that connects between the second branch pipe, third cutting valve portion and the first cutting valve portion, the third valve rod axial movement with
Make the inner cavity pipeline conducting of third cutting valve portion or is cut off.
9. the Self-operated pressure reducing valve according to claim 8 with superpressure safety cut-off function, it is characterised in that described
Three cutting valve portions inner cavity pipelines be equipped with on-off slot inner cavity pipeline is divided into two sections of front and back, be formed in on-off groove groove wall and
One opening of inner cavity pipeline leading portion connection, another opening being connected to inner cavity pipeline back segment, the second back-moving spring band
Dynamic secondary diaphragm resets so that the axial movement of third valve rod is to close one in two openings.
10. the Self-operated pressure reducing valve according to claim 4 with superpressure safety cut-off function, it is characterised in that the valve
It is fixed with valve block in vivo, the valve block is formed with the interface channel, and the valve block opposite end is formed with annular protrusion, described
The gasket of annular is equipped on first valve rod and the second valve rod axial end face, the outer diameter of the gasket is greater than the convex annular
The outer diameter risen, the second valve rod closing interface channel is so that gasket offsets with annular protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910343499.9A CN110206920B (en) | 2019-04-26 | 2019-04-26 | Self-operated pressure reducing valve with overpressure safety cut-off function |
Applications Claiming Priority (1)
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4195656A (en) * | 1978-07-07 | 1980-04-01 | The Singer Company | Orifice device with safety shut-off for pressure regulators |
| JP2003162331A (en) * | 2001-11-26 | 2003-06-06 | Tokyo Gas Co Ltd | Pressure governing device |
| CN201487554U (en) * | 2009-08-11 | 2010-05-26 | 河北慧星调压器有限公司 | Cutting-off pressure-regulating integrated gas pressure regulator |
| CN103644341A (en) * | 2013-12-26 | 2014-03-19 | 谷红军 | Cutting off type indoor pressure regulator |
| CN105485383A (en) * | 2014-10-01 | 2016-04-13 | 爱默生过程管理调压器技术公司 | Slam shut safety device |
| CN205938020U (en) * | 2016-08-23 | 2017-02-08 | 河北永洁燃气设备有限公司 | Safety is diffused, a safety cut -off balanced valve formula building gas pressure regulator |
| CN206555501U (en) * | 2016-03-21 | 2017-10-13 | 浙江春晖智能控制股份有限公司 | A kind of gas pressure regulator, governor of bidirectional safe stop valve |
| CN109185516A (en) * | 2018-11-08 | 2019-01-11 | 上海飞奥燃气设备有限公司 | A kind of lever gas pressure regulator, governor |
| JP2019023505A (en) * | 2017-07-25 | 2019-02-14 | フシマン株式会社 | Pilot type pressure reducer |
| CN208565707U (en) * | 2018-08-15 | 2019-03-01 | 李晓宏 | Hyper-pressure cut-off pressure regulator and fuel gas transmission pipe network |
-
2019
- 2019-04-26 CN CN201910343499.9A patent/CN110206920B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4195656A (en) * | 1978-07-07 | 1980-04-01 | The Singer Company | Orifice device with safety shut-off for pressure regulators |
| JP2003162331A (en) * | 2001-11-26 | 2003-06-06 | Tokyo Gas Co Ltd | Pressure governing device |
| CN201487554U (en) * | 2009-08-11 | 2010-05-26 | 河北慧星调压器有限公司 | Cutting-off pressure-regulating integrated gas pressure regulator |
| CN103644341A (en) * | 2013-12-26 | 2014-03-19 | 谷红军 | Cutting off type indoor pressure regulator |
| CN105485383A (en) * | 2014-10-01 | 2016-04-13 | 爱默生过程管理调压器技术公司 | Slam shut safety device |
| CN206555501U (en) * | 2016-03-21 | 2017-10-13 | 浙江春晖智能控制股份有限公司 | A kind of gas pressure regulator, governor of bidirectional safe stop valve |
| CN205938020U (en) * | 2016-08-23 | 2017-02-08 | 河北永洁燃气设备有限公司 | Safety is diffused, a safety cut -off balanced valve formula building gas pressure regulator |
| JP2019023505A (en) * | 2017-07-25 | 2019-02-14 | フシマン株式会社 | Pilot type pressure reducer |
| CN208565707U (en) * | 2018-08-15 | 2019-03-01 | 李晓宏 | Hyper-pressure cut-off pressure regulator and fuel gas transmission pipe network |
| CN109185516A (en) * | 2018-11-08 | 2019-01-11 | 上海飞奥燃气设备有限公司 | A kind of lever gas pressure regulator, governor |
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| CN110206920B (en) | 2023-09-15 |
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