CN106678403B - A kind of proportional pressure-reducing valve - Google Patents
A kind of proportional pressure-reducing valve Download PDFInfo
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- CN106678403B CN106678403B CN201611141781.1A CN201611141781A CN106678403B CN 106678403 B CN106678403 B CN 106678403B CN 201611141781 A CN201611141781 A CN 201611141781A CN 106678403 B CN106678403 B CN 106678403B
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- chest
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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
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention discloses a kind of proportional pressure-reducing valves, comprising: low pressure chamber blanking cover, shell, inlet suction port, high pressure chest blanking cover, high pressure chest piston, sealing ring, air outlet adapter and low pressure chamber piston；Wherein, the low pressure chamber blanking cover is connected with one end of the shell, and high pressure chest blanking cover is connected with the other end of the shell；Low pressure chamber blanking cover, shell and high pressure chest blanking cover form an internal cavities；Low pressure chamber piston is set in low pressure chamber, and the lateral wall of the first end of low pressure chamber piston can mutually be crimped with the inner sidewall of sealing ring, and low pressure chamber piston can move up and down along the axis of cavity；High pressure chest piston is set in high pressure chest, and the second end of high pressure chest piston is in contact with the first end of low pressure chamber piston, and high pressure chest piston can move up and down along the axis of cavity.The present invention solves the problem of the short gas leakage of life of valve very well, is suitble to shock tunnel decompression inflation for a long time, structure is simple, and easy to process, manufacturing cost is low.
Description
Technical field
The present invention relates to Fluid valve control field more particularly to a kind of proportional pressure-reducing valves.
Background technique
Proportional pressure-reducing valve is a kind of device for controlling fluid, and the balanced sequence of piston, opens or closes blow vent close to the inner portion,
Realize that outlet pressure is equal to 1/2 inlet pressure；Valve mechanism is compact, and maintenance cost is low, and structure is simple, and it is broken to be suitably applied wind-tunnel
The pressure of film controls the field of occasion, proportional decompression demand.
Currently, the ratio of shock tunnel Rupture of Membrane pressure controls, the main opening and closing for using shut-off valve are observed actual
Pressure value frequently controls the on-off of air-flow, reaches the target pressure value of needs.Under normal circumstances, shock tunnel needs 1/2 ratio
Valve reaches diaphragm rapid disruption, realizes the pressure control of wind-tunnel.Such as FD-20 shock wave/gun wind tunnel of CAAA uses manual voltage regulation
Rupture of membranes, FD-22 gun wind tunnel manually control rupture of membranes using solenoid valve, and FD-22a gun wind tunnel uses 1/2 proportional pressure-relief valve control.
The use of medium is the shock tunnel that compressed air or nitrogen are run, pressure regulation process according to the height of the blowing pressure,
A few minutes were differed by one hour.For high-voltage operation state, the time is long, it is desirable that and the attention of personnel is concentrated, and control pressure is accurate,
Otherwise the quality of rupture of membranes can be had an impact；Prolonged operation, labor intensity of operating staff is big, while the frequent of shut-off valve opens
Stop acting, the service life is low, and basic half a year will be replaced.To reduce personnel labor intensity and mentioning high control precision, the ratio of devising subtracts
Pressure valve, and it is applied to FD-22a gun wind tunnel.
Although FD-22 wind-tunnel has used 1/2 proportional pressure-reducing valve, pressure controling precision is improved, reduces operator's labor
Fatigue resistance；But found in use process, due to using rubber packing material, it is made into small-sized seal, valve port stress collection
In, frequently under conditions of opening and closing, easily there is impression in valve port, and at relatively high pressure, especially more than 35MPa, gas leakage is very
Obviously, it is not available.Currently, only in 30MPa pressure 1/2 proportional pressure-reducing valve used below, it, still will be by behaviour more than 30MPa
Make personnel control shut-off valve and realize pressure control,
According to use experience, after seal has impression, it is difficult extensive using tetrafluoroethene sealing material using a period of time
Shape is restored, is leaked air.Using soft rubber material, after use after a period of time, valve port generates abrasion, and leak air phenomenon.
Currently, more frequent replacement sealing element can only be leaned on, to solve the problems, such as.
Summary of the invention
Technical problem solved by the present invention is compared with the prior art, providing a kind of proportional pressure-reducing valve, solving valve very well
The problem of door service life is short, gas leakage is suitble to shock tunnel decompression inflation for a long time, and structure is simple, and easy to process, manufacturing cost is low.
The object of the invention is achieved by the following technical programs: a kind of proportional pressure-reducing valve, comprising: low pressure chamber blanking cover, shell
Body, inlet suction port, high pressure chest blanking cover, high pressure chest piston, sealing ring, air outlet adapter and low pressure chamber piston；Wherein, the low pressure chamber
Blanking cover is connected with one end of the shell, and the high pressure chest blanking cover is connected with the other end of the shell；The low pressure chamber
Blanking cover, the shell and the high pressure chest blanking cover form an internal cavities, wherein cavity includes low pressure chamber and high pressure chest, low pressure
Chamber is connected with high pressure chest；The sealing ring is set to the communicating position of low pressure chamber and high pressure chest, wherein the outer surface of sealing ring
It is mutually crimped with the inner wall of shell；The low pressure chamber piston is set in low pressure chamber, outside the first end of the low pressure chamber piston
Side wall can mutually be crimped with the inner sidewall of sealing ring, and the low pressure chamber piston can move up and down along the axis of cavity；The high pressure
Chamber piston is set in high pressure chest, and the second end of the high pressure chest piston connects with the first end of the low pressure chamber piston
Touching, the high pressure chest piston can move up and down along the axis of cavity；The side of the shell is provided with inlet suction port, wherein
Inlet suction port is connected by first passage with the top of high pressure chest, and inlet suction port passes through the lower end phase of second channel and high pressure chest
Connection；The other side of the shell is provided with air outlet adapter, wherein air outlet adapter passes through the lower part phase of third channel and low pressure chamber
Connection, air outlet adapter are connected by fourth lane with the upper end of low pressure chamber.
In aforementioned proportion pressure reducing valve, further includes: high pressure chest seals film, wherein the high pressure chest sealing film is set to high pressure
It is intracavitary, and it is located at the lower part of high pressure chest piston.
In aforementioned proportion pressure reducing valve, further includes: low pressure chamber seals film, wherein the low pressure chamber sealing film is set to low pressure
It is intracavitary, and it is located at the top of low pressure chamber piston.
In aforementioned proportion pressure reducing valve, further includes: the first vent connection and the second vent connection；Wherein, it described first deflates
Connector is set to the side of the shell, first vent connection pass through the shell Five-channel opened up and low pressure chamber first
End is connected；Second vent connection is set to the other side of the shell, and second vent connection is opened up by shell
The 6th channel be connected with the second end of high pressure chest.
In aforementioned proportion pressure reducing valve, further includes: locking stud；Wherein, the bottom diameter of the low pressure chamber is less than the height
Press the upper end diameter of chamber；The locking stud is set to the high pressure chest, and connect with the inner thread of shell；The sealing ring
Diameter it is equal with the upper end diameter of the high pressure chest, one end of the sealing ring is mutually crimped with the bottom end of low pressure chamber, described close
The other end of seal ring is mutually crimped with one end of locking stud；The locking stud offers cavity, and the of the high pressure chest piston
Two ends pass through cavity and are in contact with the first end of the low pressure chamber piston.
In aforementioned proportion pressure reducing valve, the low pressure chamber blanking cover is connected by screw with one end of the shell, the height
Pressure chamber blanking cover is connected by screw with the other end of the shell.
In aforementioned proportion pressure reducing valve, the aperture of the sealing ring is trapezoidal, corresponding, low pressure along the cross sectional shape of axis
The aperture of the side wall and the sealing ring of first end of chamber piston matches.
In aforementioned proportion pressure reducing valve, the low pressure chamber is T-type chamber along the cross sectional shape of its axis, the low pressure chamber piston
The shape of shape and the low pressure chamber matches；The high pressure chest is inverted T shaped chamber, the high pressure chest along the cross sectional shape of its axis
The shape of piston and the shape of the high pressure chest match.
In aforementioned proportion pressure reducing valve, the sealing ring is teflon seal ring.
Compared with prior art, the present invention has the following advantages:
(1) the problem of it is short using the overall structure of proportional pressure-reducing valve to solve existing life of valve by the present invention, gas leakage, fits
Shock tunnel decompression inflation for a long time is closed, structure is simple, and easy to process, manufacturing cost is low；
(2) present invention makes sealing effect good using low pressure chamber sealing film；
(3) present invention makes sealing effect good using high pressure chest sealing film；
(4) present invention uses the material of sealing ring for polytetrafluoroethylene material, long service life；
(5) structure of the invention is simple, easy processing manufacture, at low cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of proportional pressure-reducing valve of the invention；
Fig. 2 is the structural schematic diagram of low pressure chamber blanking cover of the invention；
Fig. 3 is the structural schematic diagram of high pressure chest blanking cover of the invention；
Fig. 4 (a) is the top view of shell of the invention；
Fig. 4 (b) is the bottom view of shell of the invention；
Fig. 5 is the structural schematic diagram of sealing ring of the invention；
Fig. 6 (a) is the left view of locking stud of the invention；
Fig. 6 (b) is the sectional view of locking stud of the invention along axis；
Fig. 7 is the structural schematic diagram of high pressure chest piston of the invention；
Fig. 8 is the structural schematic diagram of low pressure chamber piston of the invention.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings:
Fig. 1 is the structural schematic diagram of proportional pressure-reducing valve of the invention.As shown in Figure 1, the proportional pressure-reducing valve includes: low pressure chamber
Blanking cover 1, shell 2, inlet suction port 4, high pressure chest blanking cover 5, high pressure chest piston 7, sealing ring 9, air outlet adapter 11 and low pressure chamber piston
12；Wherein,
Low pressure chamber blanking cover 1 is connected with one end of shell 2, and high pressure chest blanking cover 5 is connected with the other end of shell 2.Specifically
When implementation, the material of low pressure chamber blanking cover 1 is 304 stainless steels, and the material of high pressure chest blanking cover 5 is 304 stainless steels, the material of shell 2
For 304 stainless steels, further, the axis of the axis of low pressure chamber blanking cover 1, the axis of shell 2 and high pressure chest blanking cover 5 is same axis
Line.
Low pressure chamber blanking cover 1, shell 2 and high pressure chest blanking cover 5 form an internal cavities, wherein cavity includes 151 He of low pressure chamber
High pressure chest 152, low pressure chamber 151 are connected with high pressure chest 152.Specifically, low pressure chamber blanking cover 1 seals up the upper end of shell 2, it is high
Pressure chamber blanking cover 5 seals up the lower end of shell 2, forms an inside by low pressure chamber blanking cover 1, shell 2 and high pressure chest blanking cover 5
Cavity.The cavity is divided into 152 two parts of low pressure chamber 151 and high pressure chest.
Sealing ring 9 is set to the communicating position of low pressure chamber 151 and high pressure chest 152, wherein the outer surface of sealing ring 9 and shell
The inner wall of body 2 mutually crimps.When it is implemented, sealing ring 9 is teflon seal ring.
Low pressure chamber piston 12 is set in low pressure chamber 151, the lateral wall of the first end 121 of low pressure chamber piston 12 can with it is close
The inner sidewall of seal ring 9 mutually crimps, and low pressure chamber piston 12 can move up and down along the axis of cavity.Specifically, low pressure chamber 151 is along it
The cross sectional shape of axis is T-type chamber, and the shape of the shape and low pressure chamber 151 of low pressure chamber piston 12 matches.The axis of cavity with
The axis of shell 2 is overlapped.
High pressure chest piston 7 is set in high pressure chest 152, the second end 71 and the low pressure chamber piston 12 of high pressure chest piston 7
First end 121 is in contact, and high pressure chest piston 7 can move up and down along the axis of cavity.Specifically, high pressure chest 152 is along its axis
The cross sectional shape of line is inverted T shaped chamber, and the shape of high pressure chest piston 7 and the shape of high pressure chest 152 match.The axis and shell of cavity
The axis of body 2 is overlapped.
The side of shell 2 is provided with inlet suction port 4, wherein inlet suction port 4 passes through first passage 41 and high pressure chest 152
Top is connected, and inlet suction port 4 is connected by second channel 42 with the lower end of high pressure chest 152.Specifically, on a left side for shell 2
Side is provided with inlet suction port 4, first passage 41 and the segment pipe having the same of second channel 42, and first passage 41 is opened in shell
The inside of body 2, first passage 41 are connected with the top of high pressure chest 152, further, first passage 41 and Fig. 1 mesohigh chamber
152 top location A is connected.The inside of shell 2 and high pressure chest blanking cover 5 offers second channel 42, second channel 42 jointly
It is connected with the bottom of high pressure chest 152.
The other side of shell 2 is provided with air outlet adapter 11, wherein air outlet adapter 11 passes through third channel 111 and low pressure chamber
151 lower part is connected, and air outlet adapter 11 is connected by fourth lane 112 with the upper end of low pressure chamber 151.Specifically, in shell
The right side of body 2 is provided with air outlet adapter 11, third channel 111 and the segment pipe having the same of fourth lane 112, third channel
111 are opened in the inside of shell 2, and third channel 111 is connected with the lower part of low pressure chamber 151, further, third channel 111
It is connected with the top B location of Fig. 1 mesolow chamber 151.The inside of shell 2 and low pressure chamber blanking cover 1 offers fourth lane jointly
112, fourth lane 112 is connected with the top of low pressure chamber 151.
Working principle are as follows: high-pressure air source is accessed by inlet suction port 4, and into high pressure chest 152, high pressure chest piston 7 simultaneously generates shifting
Dynamic distance, and make high pressure chest piston 7 withstand low pressure chamber piston 12 and move up, so that low pressure chamber piston 12 is detached from sealing ring 9,
So that generating gap between low pressure chamber piston 12 and sealing ring 9, high pressure gas reaches 11 He of air outlet adapter of outlet by gap
Low pressure chamber, while raising with outlet pressure, the pressure of low pressure chamber is raised simultaneously, act on power on low pressure chamber piston 12 by
It is cumulative big, when gas pressure reaches the 1/2 of inlet pressure, balance between two forces, the gap between sealing ring and low pressure chamber piston 12
Traffic requirement is adapted to, is held in place by.When outlet pressure be more than inlet pressure 1/2 when, low pressure chamber piston 12 gradually to
Opposite direction is mobile, so that the gap between sealing ring and low pressure chamber piston 12 gradually becomes smaller, maintains outlet pressure in inlet pressure
1/2 near, pressure controling precision is substantially 1%.
The problem of it is short that the present embodiment using the overall structure of proportional pressure-reducing valve solves existing life of valve, gas leakage, fits
Shock tunnel decompression inflation for a long time is closed, structure is simple, and easy to process, manufacturing cost is low；And the structure of the present embodiment is simple,
Easy processing manufacture, it is at low cost.
In above-described embodiment, as shown in Figure 1, the proportional pressure-reducing valve further include: high pressure chest seals film 6, wherein high pressure chest is close
Sealer 6 is set in high pressure chest 152, and is located at the lower part of high pressure chest piston 7.Specifically, high pressure chest sealing film 6 selects advanced fluorine
Rubber material designs die casting and molding.High pressure chest sealing film 6 is set to the link position of shell 2 Yu high pressure chest blanking cover 5, high
Pressure chamber sealing film 6 is located in high pressure chest 152, and is located at the lower part of high pressure chest piston 7, and the upper surface that high pressure chest seals film 6 is close to
The lower end of high pressure chest piston 7.Pass through second channel 42 into 152 gas replenishment process of high pressure chest by inlet suction port 4, so that high pressure chest
It seals film 6 to deform, so that high pressure chest sealing film 6 moves upwards high pressure chest piston 7, further, by high pressure chest
The deformation for sealing film 6 itself, can be realized the movement of 3mm~5mm of high pressure chest piston 7.Film 6, which is sealed, by high pressure chest reaches effect
Fruit is that pressure-air is sealed in the intracavitary of 7 place of high pressure chest piston, will not generate gas leakage, the pressure for keeping piston to be subject to is quasi-
Really.
In above-described embodiment, as shown in Figure 1, the proportional pressure-reducing valve further include: low pressure chamber seals film 13, wherein low pressure chamber
Sealing film 13 is set in low pressure chamber 151, and is located at the top of low pressure chamber piston 12.Specifically, low pressure chamber sealing film 13 is selected
Advanced fluorubber material designs die casting and molding.Low pressure chamber sealing film 13 is set to the connection of shell 2 Yu low pressure chamber blanking cover 1
Position, low pressure chamber sealing film 13 is located in low pressure chamber 151, and is located at the top of low pressure chamber piston 12, and low pressure chamber seals film 13
The upper end of lower surface abutting low pressure chamber piston 12.By the deformation of low pressure chamber sealing film 13 itself, low pressure chamber piston can be realized
The movement of 12 3mm~5mm.Sealing film 13 to reach effect by low pressure chamber is that pressure-air is sealed in where low pressure chamber piston 12
It is intracavitary, will not gas leakage, keep the pressure that is subject to of piston accurate.
In above-described embodiment, as shown in Figure 1, the proportional pressure-reducing valve further include: the first vent connection 3 and the second vent connection
10；Wherein,
First vent connection 3 is set to the side of shell 2, and the first vent connection 3 passes through the Five-channel 31 that shell 2 opens up
It is connected with the first end 1511 of low pressure chamber 151.Specifically, the first vent connection 3 is set to the left side of shell 2, first deflates
The effect of connector 3 is that the internal pressure of first end 1511 is kept to be connected with atmosphere, and pressure is an atmospheric pressure.
Second vent connection 10 is set to the other side of shell 2, and the second vent connection 10 is led to by the 6th that shell 2 opens up
Road 101 is connected with the second end 1521 of high pressure chest 152.Specifically, the second vent connection 10 is set to the right side of shell 2, the
The effect of two vent connections 10 is that the internal pressure of second end 1521 is kept to be connected with atmosphere, and holding pressure is an atmospheric pressure.
In above-described embodiment, as shown in Figure 1, the proportional pressure-reducing valve further include: locking stud 8；Wherein,
The bottom diameter of low pressure chamber 151 is less than the upper end diameter of high pressure chest 152.Specifically, the axis of low pressure chamber 151 and height
The axis for pressing chamber 152 is same axis, and the bottom diameter of low pressure chamber 151 is less than the upper end diameter of high pressure chest 152, so that low
Pressing is convex form at chamber 151 and 152 link position of high pressure chest.
Locking stud 8 is set to high pressure chest 152, and connect with the inner thread of shell 2.Specifically, shell 2 opens up high pressure
The inner wall of chamber 152 is equipped with internal screw thread, and locking stud 8 is connect with the inner thread of shell 2.
The diameter of sealing ring 9 is equal with the upper end diameter of high pressure chest 152, one end of sealing ring 9 and the bottom end of low pressure chamber 151
It mutually crimps, the other end of sealing ring 9 is mutually crimped with one end of locking stud 8.Specifically, due to the diameter and high pressure of sealing ring 9
The upper end diameter of chamber 152 is equal, so that the diameter of sealing ring 9 is greater than the bottom diameter of low pressure chamber 151, sealing ring 9 can
It is set to the communicating position of low pressure chamber 151 and high pressure chest 152, so that the upper end of sealing ring 9 and the lower end of low pressure chamber 151 are tightly squeezed
Pressure, the lower end of sealing ring 9 and the upper end of locking stud 8 tightly squeeze.
As shown in Fig. 6 (a) and Fig. 6 (b), locking stud 8 offers cavity, and the second end 71 of high pressure chest piston 7 passes through
Cavity is in contact with the first end 121 of low pressure chamber piston 12.Specifically, the axis weight of the axis of cavity and high pressure chest piston 7
It closes.The one end for locking stud 8 is interior hexagonal hole, and locking when convenient for assembly, inside is smooth circular hole, as plunger shaft.
In above-described embodiment, low pressure chamber blanking cover 1 is connected by screw 14 with one end of shell 2.Specifically, such as Fig. 2 institute
Show, low pressure chamber blanking cover 1 is uniformly provided with several through-holes along its circumferential direction, and it is stifled with low pressure chamber that the upper end of shell 2 offers several
The corresponding blind hole of the through-hole of lid 1 (shown in such as Fig. 4 (a)), screw 14 passes through the through-hole of low pressure chamber blanking cover 1 and the upper end of shell 2
Blind hole low pressure chamber blanking cover 1 is connected with the upper end of shell 2.
High pressure chest blanking cover 5 is connected by screw 14 with the other end of shell 2.Specifically, as shown in figure 3, high pressure chest is stifled
Lid 5 is uniformly provided with several through-holes along its circumferential direction, and the lower end of shell 2 offers several through-hole phases with high pressure chest blanking cover 5
Corresponding blind hole (shown in such as Fig. 4 (b)), screw 14 pass through the blind hole of the through-hole of high pressure chest blanking cover 5 and the lower end of shell 2 for high pressure
Chamber blanking cover 5 is connected with the lower end of shell 2.
In above-described embodiment, as shown in figure 5, the aperture of sealing ring 9 along axis cross sectional shape be it is trapezoidal, it is corresponding,
The side wall of the first end 121 of low pressure chamber piston 12 and the aperture of sealing ring 9 match (as shown in Figure 8).Low pressure chamber piston 12
When moving downward, the first end 121 of low pressure chamber piston 12 can squeeze sealing ring 9.
In above-described embodiment, as shown in fig. 7, being provided with the first O-ring 73, high pressure on the piston rod 72 of high pressure chest piston 7
Chamber piston 7 is sealingly mounted in the high pressure chest 152 of shell 2 by the first O-ring 73.
In above-described embodiment, as shown in figure 8, the second O-ring 123 is provided on the piston rod 122 of low pressure chamber piston 12, it is low
Pressure chamber piston 12 is sealingly mounted in the plunger shaft of locking stud 8 by the second O-ring 123.
The problem of it is short that the present invention using the overall structure of proportional pressure-reducing valve solves existing life of valve, gas leakage, is suitble to
Shock tunnel decompression inflation for a long time, structure is simple, and easy to process, manufacturing cost is low；And the present invention is sealed using low pressure chamber
Film makes sealing effect good；And the present invention makes sealing effect good using high pressure chest sealing film；And the present invention is using sealing
The material of ring is polytetrafluoroethylene material, long service life；And structure of the invention is simple, easy processing manufacture, at low cost.
Embodiment described above is the present invention more preferably specific embodiment, and those skilled in the art is in this hair
The usual variations and alternatives carried out in bright technical proposal scope should be all included within the scope of the present invention.
Claims (8)
1. a kind of proportional pressure-reducing valve, characterized by comprising: low pressure chamber blanking cover (1), shell (2), inlet suction port (4), high pressure chest
Blanking cover (5), high pressure chest piston (7), sealing ring (9), air outlet adapter (11) and low pressure chamber piston (12)；Wherein,
The low pressure chamber blanking cover (1) is connected with one end of the shell (2), the high pressure chest blanking cover (5) and the shell (2)
The other end be connected；
The low pressure chamber blanking cover (1), the shell (2) and the high pressure chest blanking cover (5) form an internal cavities, wherein cavity
Including low pressure chamber (151) and high pressure chest (152), low pressure chamber (151) is connected with high pressure chest (152)；
The sealing ring (9) is set to the communicating position of low pressure chamber (151) and high pressure chest (152), wherein outside sealing ring (9)
Surface is mutually crimped with the inner wall of shell (2)；
The low pressure chamber piston (12) is set in low pressure chamber (151), the first end (121) of the low pressure chamber piston (12)
Lateral wall can mutually be crimped with the inner sidewall of sealing ring (9), and the low pressure chamber piston (12) can move up and down along the axis of cavity；
The high pressure chest piston (7) is set in high pressure chest (152), the second end (71) of the high pressure chest piston (7) and institute
The first end (121) for stating low pressure chamber piston (12) is in contact, and the high pressure chest piston (7) can transport up and down along the axis of cavity
It is dynamic；
The side of the shell (2) is provided with inlet suction port (4), wherein inlet suction port (4) passes through first passage (41) and high pressure
The top of chamber (152) is connected, and inlet suction port (4) is connected by second channel (42) with the lower end of high pressure chest (152)；
The other side of the shell (2) is provided with air outlet adapter (11), wherein air outlet adapter (11) passes through third channel (111)
It is connected with the lower part of low pressure chamber (151), air outlet adapter (11) passes through the upper end phase of fourth lane (112) and low pressure chamber (151)
Connection；
Wherein, it is provided with the first O-ring (73) on the piston rod (72) of high pressure chest piston (7), the piston of low pressure chamber piston (12)
The second O-ring (123) are provided on bar (122)；
The low pressure chamber (151) along its axis cross sectional shape be T-type chamber, the shape of the low pressure chamber piston (12) with it is described low
The shape of pressure chamber (151) matches；
The high pressure chest (152) along its axis cross sectional shape be inverted T shaped chamber, the shape of the high pressure chest piston (7) with it is described
The shape of high pressure chest (152) matches.
2. proportional pressure-reducing valve according to claim 1, which is characterized in that further include: high pressure chest seals film (6), wherein institute
It states high pressure chest sealing film (6) to be set in high pressure chest (152), and is located at the lower part of high pressure chest piston (7).
3. proportional pressure-reducing valve according to claim 1, which is characterized in that further include: low pressure chamber seals film (13), wherein
Low pressure chamber sealing film (13) is set in low pressure chamber (151), and is located at the top of low pressure chamber piston (12).
4. proportional pressure-reducing valve according to claim 1, which is characterized in that further include: the first vent connection (3) and second is put
Gas connector (10)；Wherein,
First vent connection (3) is set to the side of the shell (2), and first vent connection (3) passes through shell (2)
The Five-channel (31) opened up is connected with the first end (1511) of low pressure chamber (151)；
Second vent connection (10) is set to the other side of the shell (2), and second vent connection (10) passes through shell
The 6th channel (101) that body (2) opens up is connected with the second end (1521) of high pressure chest (152).
5. proportional pressure-reducing valve according to claim 1, which is characterized in that further include: locking stud (8)；Wherein,
The bottom diameter of the low pressure chamber (151) is less than the upper end diameter of the high pressure chest (152)；
The locking stud (8) is set to the high pressure chest (152), and connect with the inner thread of shell (2)；
The diameter of the sealing ring (9) is equal with the upper end diameter of the high pressure chest (152), one end of the sealing ring (9) with
The bottom end of low pressure chamber (151) mutually crimps, and the other end of the sealing ring (9) is mutually crimped with one end of locking stud (8)；
The locking stud (8) offers cavity, the second end (71) of the high pressure chest piston (7) pass through cavity with it is described low
The first end (121) of pressure chamber piston (12) is in contact.
6. proportional pressure-reducing valve according to claim 1, which is characterized in that the low pressure chamber blanking cover (1) passes through screw (14)
It is connected with one end of the shell (2), the high pressure chest blanking cover (5) passes through the other end of screw (14) and the shell (2)
It is connected.
7. proportional pressure-reducing valve according to claim 1, which is characterized in that the aperture of the sealing ring (9) is cut along axis
Face shape is trapezoidal, corresponding, the side wall of the first end (121) and the opening for the sealing ring (9) of low pressure chamber piston (12)
Hole matches.
8. proportional pressure-reducing valve according to claim 1, which is characterized in that the sealing ring (9) is teflon seal
Ring.
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| CN201611141781.1A CN106678403B (en) | 2016-12-12 | 2016-12-12 | A kind of proportional pressure-reducing valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08128559A (en) * | 1994-10-31 | 1996-05-21 | Nippon Soken Inc | Flow rate regulating valve |
| US6237635B1 (en) * | 1999-06-25 | 2001-05-29 | Aera Japan Ltd. | Exhauster pressure control system |
| CN103827563A (en) * | 2011-08-31 | 2014-05-28 | 柏佛尔德流体动力有限公司 | Valve |
| CN105283637A (en) * | 2013-03-15 | 2016-01-27 | 智能能源有限公司 | Fluidic components suitable for fuel cell systems including pressure regulators and valves |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080196773A1 (en) * | 2007-02-16 | 2008-08-21 | Honeywell International, Inc. | Ventline control valve assembly |
| US7779863B2 (en) * | 2007-06-29 | 2010-08-24 | Raytheon Sarcos, Llc | Pressure control valve having an asymmetric valving structure |
| US20150234392A1 (en) * | 2014-02-18 | 2015-08-20 | Mine Support Products (Pty) Ltd | Pressure reduction device |
| US20150276088A1 (en) * | 2014-03-25 | 2015-10-01 | Hamilton Sundstrand Corporation | Pressure regulating valve and method of adjusting damping of the same |
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2016
- 2016-12-12 CN CN201611141781.1A patent/CN106678403B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08128559A (en) * | 1994-10-31 | 1996-05-21 | Nippon Soken Inc | Flow rate regulating valve |
| US6237635B1 (en) * | 1999-06-25 | 2001-05-29 | Aera Japan Ltd. | Exhauster pressure control system |
| CN103827563A (en) * | 2011-08-31 | 2014-05-28 | 柏佛尔德流体动力有限公司 | Valve |
| CN105283637A (en) * | 2013-03-15 | 2016-01-27 | 智能能源有限公司 | Fluidic components suitable for fuel cell systems including pressure regulators and valves |
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| Publication number | Publication date |
|---|---|
| CN106678403A (en) | 2017-05-17 |
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