CN1152088A - Reducing valve - Google Patents

Reducing valve Download PDF

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Publication number
CN1152088A
CN1152088A CN96112290A CN96112290A CN1152088A CN 1152088 A CN1152088 A CN 1152088A CN 96112290 A CN96112290 A CN 96112290A CN 96112290 A CN96112290 A CN 96112290A CN 1152088 A CN1152088 A CN 1152088A
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China
Prior art keywords
mentioned
chamber
fluid
valve
slide block
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CN96112290A
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Chinese (zh)
Inventor
池盛荣
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WiniaDaewoo Co Ltd
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Daewoo Electronics Co Ltd
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Publication of CN1152088A publication Critical patent/CN1152088A/en
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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
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
    • 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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted valves

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)
  • Lift Valve (AREA)
  • Control Of Fluid Pressure (AREA)

Abstract

Disclosed is a reducing valve, the fluid with reduced pressure is provided no matter the fluid pressure on the inlet side. The slide valve of the reducing valve comprises a first slide block and a second slide block. The first and the second slide blocks are connected through a plurality of connecting bolts. The connecting bolts are inserted across a plurality of slide holes. The slide hoels are formed on the trumeau inside the valve shell. When the overpressure fluid is guided into the reducing valve, the first slide block and the second slide block are moved in the direction of the controlling spring compressed in the second chamber through the difference between the fluid pressure on the left surface of the first slide block and the right surface of the second slide block. When the fluid pressures on the left surface of the first slide block and the right surface of the second slide block are balanced, the first slide block and the second slide block are returned to the initial position.

Description

Reduction valve
The present invention relates to a kind of reduction valve, relate in particular to a kind of no matter reduction valve inlet side hydrodynamic pressure height can be provided at the reduction valve that the reduction valve outlet side has the fluid that is reduced to the prespecified range internal pressure.
In this technical field, the pressure control circuit of adjustment or regulated fluid pressure is well-known.According to the position of control hydrodynamic pressure, pressure control circuit is divided into first pressure control circuit, second pressure control circuit and actuator driving pressure control loop.
Typically, pressure control circuit uses a pressure controlled valve.Oil pressure in the pressure controlled valve control-oil pressure control loop, or the air pressure in the control air-pressure controlling loop.This pressure controlled valve comprises a relief valve that is used to set first pressure, be used to set safety valve and reduction valve of second pressure, the program valve that is used to control actuator driving pressure and back pressure valve, or the like.
Be used to set the relief valve of first pressure, by discharge section fluid when the pressure in the pressure control circuit reaches setup pressure value or whole fluid, the pressure in the control loop that can keep-up pressure is lower than setup pressure value.
In order to prevent equipment or conduit damage when the pressure in the pressure control circuit raises above setup pressure value, be used to set the interior maximum pressure of safety valve restriction pressure control circuit of second pressure.By discharging fluid, the pressure that safety valve reduces in the pressure control circuit is lower than setup pressure value when the pressure in the pressure control circuit raises above setup pressure value.
Reduction valve reduces hydrodynamic pressure to the pressure that is lower than the inlet side hydrodynamic pressure.Reduction valve is used to provide certain pressure that is lower than the inlet side hydrodynamic pressure.Reduction valve is installed on the pipeline of pilot fluid.No matter reduction valve inlet side hydrodynamic pressure height, reduction valve remains on the outlet side hydrodynamic pressure setup pressure value of requirement.According to the mode of the pressure difference between control inlet side and the outlet side, reduction valve is divided into Fixed differential reducing valve and Proprutioning pressure reducing valve.Fixed differential reducing valve keeps poor between inlet side hydrodynamic pressure and the outlet side hydrodynamic pressure.On the contrary, Proprutioning pressure reducing valve reduces the pressure ratio of outlet side and inlet side.
According to the structure of reduction valve, reduction valve is divided into direct effect reduction valve and pressure balance reduction valve.Directly effect reduction valve and pressure balance reduction valve all come work by detecting the oral-lateral hydrodynamic pressure.Directly act on reduction valve and the outer drainage of pressure balance reduction valve utilization system.Outer drainage system is perhaps to discharge unnecessary control flow rate or discharge the excretory system of letting out some flows of generation by oil leakage in the valve by valve work.
Fig. 4 is the directly schematic representation of effect reduction valve 10a internal structure of explanation.Directly effect reduction valve 10a comprises control spring 12a, the hollow guiding valve 14a as valve body, control channel 16, inlet 18a, outlet 20a, fluid flowing passage 22a and outfall 24a.First turning 26 and second turning 28 form in fluid flowing passage 22a.First turning 26 and second turning 28 are closed fluid flowing passage 22a respectively according to hydrodynamic pressure.
Below, will narrate the work that has as the direct effect reduction valve 10a of above-mentioned internal structure tout court.
As the hydrodynamic pressure P that is incorporated into direct effect reduction valve 10a by inlet 18a 1When being lower than setup pressure value, fluid is discharged to outlet 20a by fluid flowing passage.As the hydrodynamic pressure P that is incorporated into direct effect reduction valve 10a by inlet 18a 1Raise when surpassing setup pressure value, the pressure that reaches the excessive fluid of outlet side by fluid flowing passage 22a acts on the right side of guiding valve 14a by control channel 16.
Then, the pressure of excessive fluid overcomes the elastic force of control spring 12a with substantially horizontal promotion guiding valve 14a.Therefore, first turning 26 is closed, and simultaneously, second turning 28 is opened.The pressure of like this, excessive fluid is by guiding valve 14a and be discharged to outfall 24a.So when having when being incorporated into direct effect reduction valve 10a above the fluid of the pressure of setup pressure value by inlet 18a, the fluid with the pressure that is lower than setup pressure value always is discharged to outlet 20a.
Fig. 5 is the schematic representation of explanation pressure balance reduction valve 10b internal structure.Pressure balance reduction valve 10b comprises control spring 12b, guiding valve 14b, inlet 18b, outlet 20b, fluid flowing passage 22b, outfall 24b, control valve 30, main valve 32 and restriction 34.Be used for closing the control turning 36 of fluid flowing passage 22b and being arranged in the fluid flowing passage 22b according to setting hydrodynamic pressure.
Below, will narrate the work that has as the pressure balance reduction valve 10b of above-mentioned internal structure tout court.
As the hydrodynamic pressure P that is incorporated into pressure balance reduction valve 10b by inlet 18b 1When being lower than setup pressure value, fluid is discharged to outlet 20b by fluid flowing passage 22b.At this moment, the hydrodynamic pressure of outlet side passes to the end portion of main valve 32 as pilot pressure by the decompressing groove in the guiding valve 14b.At the end portion of main valve 32, hydrodynamic pressure is incorporated into main valve chamber 38 by restriction 34.At this moment, the longitudinal pressure in the main valve 32 is balanced, so main valve 32 descends by control spring 12b.
As the hydrodynamic pressure P that is incorporated into pressure balance reduction valve 10b by inlet 18b 1When the liter degree surpassed setup pressure value, the pressure in the main valve chamber 38 raise.Therefore, the control valve 30 that is configured in equilibrated valve 10b top is opened, and control flow rate is discharged by outfall 24b.So the pressure in the control valve pocket 40 reduces, and begins to close in order to control turning 36 main valves 32.Therefore, the hydrodynamic pressure of outlet side balances each other with the setting pressure that is obtained by control spring 12b.So, even, have the fluid that is reduced to the prespecified range internal pressure and also always be discharged to outlet 20a when having fluid above the pressure of setup pressure value when being incorporated into pressure balance reduction valve 10b by inlet 18b.
Yet aforesaid direct effect reduction valve 10a and pressure balance reduction valve 10b have complex inner structure.In addition, the precision machining of top grade is that manufacturing direct effect reduction valve 10a and pressure balance reduction valve 10b are necessary, and their manufacture cost is high.And, when the total pressure in the direct effect reduction valve 10a raise and equilibrated valve 10b in total pressure when raising, then produce noise and vibration and picture and control valve damage parts generation main valve, guiding valve, control turning and the control channel of fluid.
Issued the U.S. 5 of painting Sebastian Cazcarra Pallaruelo on August 8th, 1,439, No. 030 patents disclose and a kind ofly can abate the noise, vibration and aforesaid damage problem and can the piecewise reduce the modulating valve that the high pressure of high hydrodynamic pressure flows.In the modulating valve of this U. S. Patent,,, the chamber in the modulating valve is separated into a plurality of sub-chambeies according to flowing of fluid for the high pressure of piecewise reduction inlet side.
Fig. 6 illustrates the modulating valve 10c of aforesaid U. S. Patent.
Below, with the internal structure of narration modulating valve 10c.
Modulating valve 10c comprise sealed-regulating valve 10c inside valve casing 42, be arranged on modulating valve 10c inlet sides in the valve casing 42 first fluid flow channel 44, be arranged on second fluid flowing passage 46, the hollow cylinder 50 of arranged perpendicular between the first fluid flow channel 44 and second fluid flowing passage 46 of modulating valve 10c outlet sides in the valve casing 42.
Cylinder 50 is pushed into and is engaged in the hole that forms on the dividing plate 51.Dividing plate 51 separates first fluid flow channel 44 with second fluid flowing passage 46.Hollow plug 60 is configured in the cylinder 50.Plug 60 has three diameters that progressively reduce to the lower end from its upper end.Cylinder 50 vaginal plugs 60 move.Seat ring 58 is configured to the bottom of cylinder 50.A plurality of first holes 62 that are used to introduce fluid are formed on the bottom of cylinder 50, and a plurality of the 4th holes 68 that are used to discharge fluid are formed on the middle part of cylinder 50.A plurality of second holes 64 that are used to introduce fluid are formed on the bottom of plug 60, and a plurality of the 3rd holes 66 that are used to discharge fluid are formed on the top of plug 60.
Epicoele 52, lumen 54 and cavity of resorption 56 are formed on the inside of cylinder 50.Epicoele 52 be formed on plug 60 in the cylinder 50 around.Epicoele 52 has at cylinder 50 internal diameters and fills in diameter between 60 mid diameters.Lumen 54 is formed in the plug 60.Cavity of resorption 56 be formed on plug 60 in the seat ring 58 around.Cavity of resorption 56 has the diameter between the internal diameter of the diameter of plug 60 and seat ring 58.Plug 60 is connected to an end of valve rod 72, and valve rod 72 extends downwards by covering 70.The top of valve rod 72 is connected to valve handle (not shown).
Below, be described in reference to the accompanying drawings and finish the pressure reduction in the modulating valve.
At first, the fluid that is incorporated into 44 li of first fluid flow channels from the compressed fluid supply source is incorporated into 56 li of cavity of resorptions by first hole 62.At this moment, finish the phase I that pressure reduces.
The fluid that is incorporated into 56 li of cavity of resorptions is incorporated into 54 li of lumens by second hole 64.At this moment, by flowing through the bottom of plug 60, fluid has intermediate pressure.That is, finish the second stage that pressure reduces.
The fluid that is incorporated into 54 li of lumens upwards flows, and after this, flows to the outside of plug 60 from filling in 60 inside.That is, fluid enters epicoele 52 by the 3rd hole 66 of filling on 60 the top.At this moment, finish the phase III that pressure reduces.
The fluid that enters epicoele 52 enters second fluid flowing passage 46 by the 4th hole 68 by epicoele 52.At this moment, finish the quadravalence section that pressure reduces.Therefore, fluid has had the setting head pressure.
As mentioned above, at U. S. Patent 5,493, in No. 030 the modulating valve, three chambeies and a plurality of hole are configured in cylinder 50 and the plug 60.So the pressure that inlet side is high is pressed four-stage and reduced, therefore fall relevant noise, vibration and damage problem and be eliminated with high pressure.Yet in the modulating valve 10c of this U. S. Patent, the precision machining of top grade is that to be formed with three chambeies and a plurality of hole of different-diameter necessary.And the manufacture cost of this modulating valve is high.
The present invention manages to solve above-mentioned problem.No matter the purpose of this invention is to provide the reduction valve that a kind of reduction valve inlet side pressure height can provide the reduction valve outlet side to have the fluid that is reduced to the prespecified range internal pressure, this valve has simple internal construction and low manufacture cost is arranged.
To achieve the above object, the invention provides a kind of reduction valve, this reduction valve comprises:
One valve casing, it comprises and is used for from the compressed fluid supply source that is configured in the reduction valve outside fluid being incorporated into inlet in the reduction valve, being used for discharging the outlet of fluid and the valve casing of a plurality of fluid flowing passages from reduction valve, wherein the inside of valve casing sealing reduction valve;
First fluid with first chamber is accepted part, wherein first chamber is formed by the valve casing and first sealing cover that is installed in the outer end valve casing in first chamber, and first the chamber accept the fluid introduced from inlet, be formed on first side of the bottom of valve casing by such first fluid receiving portion branch;
Second fluid with second chamber is accepted part, wherein second chamber is covered with the control that control spring is arranged in the outer end valve casing that is installed in second chamber by valve casing and is formed, and the second chamber fluid that is communicated with the first chamber fluid and accepts to introduce from first chamber, wherein, second fluid is accepted part flatly to divide second side of the bottom that relative position is formed on valve casing with the first fluid receiving portion;
Three-fluid with the 3rd chamber is accepted part, and wherein the 3rd chamber is communicated with second chamber and outlet fluid, in the 3rd chamber one-way valve is arranged, and is formed on the top of valve casing by such three-fluid receiving portion branch; With
Be used for reducing when hydrodynamic pressure in being incorporated into reduction valve surpasses setup pressure value the guiding valve of hydrodynamic pressure.
Setting is configured in the interior vertical partition of valve casing so that first chamber is separated with second chamber.At least one slide opening that is used for flatly moving forward and backward guiding valve is horizontally formed at vertical partition.Guiding valve comprises that first cylindrical slider, second cylindrical slider and at least one are used for the connecting bolt that first slide block and second slide block are coupled together.
First slide block is configured in first chamber so that first slide block slides in first chamber by substantially horizontal.First slide block comprises at least one through hole, first groove and puts into first silicon cell of first groove.
Second slide block is configured in second chamber so that second slide block slides in second chamber by substantially horizontal.Second slide block is by being configured in the control spring elastic support in second chamber and comprising that at least one placement hole and at least one are installed in the 2nd O type ring of the lateral parts of second slide block.
Connecting bolt was inserted through hole and slide opening by predetermined order.Connecting bolt extends into second chamber and inserts placement hole.
When having fluid above the pressure of setup pressure value when being incorporated in the reduction valve, the hydrodynamic pressure of the left surface by acting on first slide block and the difference that acts between the hydrodynamic pressure of right flank of second slide block relative with first slide block move guiding valve by the direction that compression is configured in the control spring in second chamber.In addition, when the hydrodynamic pressure of the left surface that acts on first slide block with when acting on the fluid pressure balance of right flank of second slide block, guiding valve turns back to initial position.
Fluid flowing passage comprise infeed the first vertical fluid flow channel that is communicated with usefulness mouthful with the first chamber fluid, for first chamber be communicated with the second chamber fluid usefulness the second horizontal liquid flow channel, supply second chamber to be communicated with the 3rd vertical fluid flow channel of usefulness with the 3rd chamber fluid and supply the 3rd chamber and export the 4th horizontal liquid flow channel that is communicated with usefulness.
The second horizontal liquid flow channel comprised for first connecting tube, at least one has second connecting tube of the diameter littler than the diameter of first connecting tube and at least one that the third connecting pipe of the diameter littler than the diameter of second connecting tube is arranged.First connecting tube, second connecting tube and third connecting pipe are formed on the partition.
One-way valve comprises valve body, is used for the valve spring of elastic support valve body and second sealing cover that the valve casing push fit consequently forms the 3rd chamber.Valve body comprises second groove of the intermediate portion that is formed on valve body and puts into second silicon cell of second groove.
Best, at least one the 3rd O type ring is configured in the junction between second sealing cover and the valve casing.At least one O type ring is configured in the junction between first sealing cover and the valve casing.
Above-mentioned purpose of the present invention and advantage are at length narrated its preferred embodiment by the reference accompanying drawing, and it is more obvious to become, wherein:
Fig. 1 is the sectional view according to the reduction valve of first embodiment of the invention;
Fig. 2 is the sectional view of expression guiding valve towards closed position mobile status shown in Figure 1;
Fig. 3 is along Fig. 1 III-III line sectional view;
Fig. 4 is the schematic representation of expression according to the direct effect reduction valve internal structure of prior art;
Fig. 5 is the schematic representation of expression according to the pressure balance reduction valve internal structure of prior art;
Fig. 6 is the sectional view according to the modulating valve of the high pressure surge of prior art.
Below, at length narrate the preferred embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 to Fig. 3 illustrates the internal structure of reduction valve 100.Reduction valve 100 comprises valve casing 170, be that guiding valve 140, the first fluid of valve body accepted part 200, second fluid accepts part 300 and three-fluid is accepted part 400.
The inside of valve casing 170 sealing reduction valve 100.Valve casing 170 comprises inlet 102, outlet 104, first fluid flow channel 110, second fluid flowing passage 112, three-fluid flow channel 114 and the 4th fluid flowing passage 116.First fluid is accepted on the bottom that part 200 is formed on valve casing 170.First fluid is accepted part 200 and is comprised first chamber 120 that is used to accept from 102 fluids of introducing that enter the mouth.
Second fluid is accepted part 300 and is formed on another bottom of valve casing 170 flatly to accept the relative position of part 200 with first fluid.Second fluid is accepted part 300 and is accepted part 200 fluids with first fluid and be communicated with.Second fluid is accepted part 300 and is comprised second chamber 130 that is used to accept the fluid introduced from first chamber 120.Three-fluid is accepted on the top that part 400 is formed on valve casing 170 and accepts part 300 fluids with second fluid to be communicated with.Three-fluid is accepted part 400 comprises one-way valve 150 in it the 3rd chamber 154.
Simultaneously, first fluid flow channel 110 vertically is arranged on the inlet side of reduction valve 100 in the valve casing 170.The outlet end of first fluid flow channel 110 is connected with first chamber 120.Therefore, first fluid flow channel 110 infeeds mouthfuls 102 and is communicated with usefulness with first chamber, 120 fluids.
Second fluid flowing passage 112 is communicated with usefulness for first chamber 120 and second chamber, 130 fluids.As shown in Figure 3, second fluid flowing passage 112 comprises the first connecting tube 112a, a plurality of second connecting tube 112b and a plurality of third connecting pipe 112c.Second fluid flowing passage 112 is horizontally formed on the valve casing 170 interior partitions 106.Best, the first connecting tube 112a has the diameter bigger than the diameter of the second connecting tube 112b, and third connecting pipe 112c has the diameter littler than the diameter of the second connecting tube 112b.
The three-fluid flow channel that vertically is arranged in the valve casing 170 is to be used to guide the passage of fluid to one-way valve 150.The 4th fluid flowing passage 116 flatly is arranged on the outlet side of reduction valve 100.The 4th fluid flowing passage 116 is to be used for the passage that discharge currents is crossed the fluid of one-way valve 150.
Guiding valve 140 comprises first cylindrical slider 142 that is configured in first chamber 120, be configured in second cylindrical slider 144 and a plurality of connecting bolts 146 that first slide block 142 is connected with second slide block of being used in second chamber 130.First slide block 142 and second slide block 144 link together by connecting bolt 146.First slide block 142 and second slide block 144 can slide by substantially horizontal.The connecting bolt 146 that runs through first slide blocks 142 in first chamber 120 passes a plurality of slide openings 118 as shown in Figure 3, inserts second slide block 144 in second chamber 130 then.The slide opening 118 that is used for moving guiding valve 140 by substantially horizontal is formed on partition 106 in the valve casing 170 by the substantially horizontal as second fluid flowing passage 12.
First chamber 120 is formed on the lower right-most portion of valve casing 170.The fluid by inlet 102 and 110 introducings of first fluid flow channel is accepted in first chamber 120.The right-hand member in first chamber 120 is by 122 sealings of first sealing cover.First sealing cover 122 is engaged and pushes first chamber 120, after this, is closely cooperated to seal first chamber 120.A plurality of O type seal rings 124 are installed in the junction between the part of first sealing cover 122 and valve casing 170.
Aforesaid first slide block 142 is configured in first chamber 120 so that first slide block 142 can slide in first chamber 120 by substantially horizontal.First slide block 142 can be in first chamber 120 slides into as shown in Figure 2 closed position from as shown in Figure 1 open position.First groove 126 is formed on part in the left side of first slide block 142.First silicon cell 128 is put into first groove 126.First silicon cell 128 is turned off the front end of the first fluid flow channel 110 that connects first chamber 120 easily.And first silicon cell 128 prevents that first slide block 142 is incorporated into the high compression failure of the concentrated fluid of part in the left side of first slide block 142 by fluid flowing passage 110.Through hole 148 is formed on the intermediate portion of first slide block 142.Connecting bolt 146 is by through hole 148.
Second chamber 130 is formed on the bottom left section of valve casing 170.Second chamber 130 is accepted by being the fluid of second fluid flowing passage 112 of the first connecting tube 112a, the second connecting tube 112b and third connecting pipe 112c from 120 introducings of first chamber.The control spring 132 and second slide block 144 are configured in second chamber 130.Control covers 134, and screw rod is for example put into the left end in second chamber 130.The elastic force and the hydrodynamic pressure of control spring 132 are opposed.The elastic force of control spring 132 pressure reduction value is as requested covered 134 and is controlled by control.For example, control cover 134 and is tightened control spring 132 if people moves in the direction of the clock, the then elastic force increase of control spring 132 on the direction relative with second slide block 144.Therefore, control spring 132 can resist higher hydrodynamic pressure.
Aforesaid second slide block 144 is configured in second chamber 130 so that second slide block 144 can slide in second chamber 130 by substantially horizontal.Second slide block 144 can be in second chamber 130 slides into as shown in Figure 2 open position from as shown in Figure 1 closed position.The a plurality of placement holes 138 that are used to lay connecting bolt 146 are formed on the intermediate portion of second slide block 144.A plurality of the 2nd O type seal rings 136 are arranged on the lateral parts of second slide block 144.
One-way valve 150 is configured in the 3rd chamber on the top that is formed on valve casing 170.The outer end in the 3rd chamber 154 is sealed by second lid 152.Second sealing cover 152 is engaged and pushes the 3rd chamber 154, after this, is closely cooperated to seal the 3rd chamber 154.A plurality of the 3rd O type seal rings 156 are installed in the junction between the part of second sealing cover 1 52 and valve casing 170.The 3rd O type seal ring 156 prevents to be incorporated into the external leakage of the fluid in 154 li in the 3rd chamber to valve casing 170.
One-way valve 150 can flow fluid from three-fluid flow channel 114 to the 4th fluid flowing passage 116.One-way valve 150 comprises valve body 158 and valve spring 160.Second groove 162 is formed on the end intermediate portion of valve body 158.Second silicon cell 164 is put into second groove 162.Second silicon cell 164 is turned off the front end of the three-fluid flow channel 114 that connects the 4th chamber 154 easily.
Below, will narrate the work of the reduction valve 100 that said structure is arranged according to a preferred embodiment of the invention.
See figures.1.and.2, if from the compressed fluid supply source outside reduction valve 100 by 102 pressure P that are incorporated into the fluid of 100 li of reduction valve that enter the mouth 1The pressure that is lower than setup pressure value is arranged, and then fluid is incorporated into 120 li in first chamber by first fluid flow channel 110.Be incorporated into the left surface collision of the fluid and first slide block 142 in 120 li in first chamber, then by being second fluid flowing passage 112 (with reference to Fig. 3) inflow, second chamber 130 of the first connecting tube 112a, the second connecting tube 112b and third connecting pipe 112c.
Be incorporated into the fluid and the right flank collision that is configured in second cylindrical slider 144 in second chamber 130 in 130 li in second chamber.
After this, fluid flows to one-way valve 150 by the vertical three-fluid flow channel 114 that is communicated with second chamber, 130 fluids.At this moment, and if the fluid of second silicon cell 164 collision pressure above opening pressure is arranged, then fluid overcomes the elastic force of valve spring 160 and promotes valve body 158 backward.Therefore, open with the 4th fluid flowing passage 116 that the 3rd chamber 154 fluids are communicated with, fluid is discharged to outlet 104 by the 4th fluid flowing passage of opening 116.
Simultaneously, turn back to the 3rd chamber 154 if be discharged to the fluid of the 4th fluid flowing passage 116 from the 3rd chamber 154 by opposite direction, then the connection of the fluid of the 3rd chamber 154 and the 4th fluid flowing passage 116 is turned off by the hydrodynamic pressure that promotes valve body 158 and the elastic force of valve spring 160.Therefore, prevented that rightabout fluid from flowing.
Aforesaid opening pressure is to overcome the elastic force of valve spring 160 and open valve body 158 necessary pressure.That is, opening pressure is the pressure that can open one-way valve 150 and the fluid that enters the 4th fluid flowing passage 116 is flowed the compressed fluid that begins.Usually, preferably opening pressure is lower.
Simultaneously, when having above setup pressure value P by 102 pressure that are incorporated into the fluid of 100 li of reduction valve that enter the mouth from the compressed fluid supply source outside reduction valve 100 1Pressure the time, fluid is incorporated into 120 li in first chamber by first fluid flow channel 110.Be incorporated into the left half collision of the fluid and first slide block 142 in 120 li in first chamber.At this moment, first silicon cell, 128 collisions of the fluid and first slide block 142.
After this, fluid flows into second chamber 130 by the first connecting tube 112a, the second connecting tube 112b and third connecting pipe 112c.Be incorporated into the liquid and the right flank collision that is configured in second cylindrical slider 144 in second chamber 130 in 130 li in second chamber.At this moment, because the first connecting tube 112a, the second connecting tube 112b and third connecting pipe 112c are formed on the cylindrical partition 106, fluid collides the periphery of the right flank of second slide block 144 with the pressure that equates.Therefore and the pressure of the fluid of the right flank of second slide block 144 collision act on the periphery of second slide block 144, and do not act on the center of second slide block 144.
Therefore, act on the hydrodynamic pressure P of the right flank of second slide block 144 2Hydrodynamic pressure P greater than the left surface that acts on first slide block 142 3Therefore, forming whole first slide block 142 and second slide block 144 is moved to the left.In other words, at the hydrodynamic pressure P of the right flank that acts on second slide block 144 2Hydrodynamic pressure P with the left surface that acts on first slide block 142 3Before the balance, guiding valve 140 is moved to the left.First slide block 142 is turned off the front end of the first fluid flow channel 110 that is communicated with first chamber, 120 fluids as much as possible.At this moment, finishing first pressure reduces.
Having the fluid that reduces pressure vertically flows to one-way valve 150 and collides second silicon cell 164 by three-fluid flow channel 114.At this moment, if collide the fluid of second silicon cell 164 pressure above opening pressure is arranged, then fluid overcomes the elastic force of valve spring 160 and promotes valve body 158 backward.Therefore, open with the 4th fluid flowing passage 116 that the 3rd chamber 154 fluids are communicated with, fluid is discharged to outlet 104 by the 3rd chamber 154 and the 4th fluid flowing passage of opening 116.Simultaneously, turn back to the 3rd chamber 154 if be discharged to the fluid of the 4th fluid flowing passage 116 from the 3rd chamber 154 by opposite direction, then the connection of the fluid of the 3rd chamber 154 and the 4th fluid flowing passage 116 is turned off by the fluid that promotes valve body 158 and the power of valve spring 160.Therefore, prevent that fluid from flowing by opposite direction.
Simultaneously, if act on the hydrodynamic pressure P of the left surface of first slide block 142 2Hydrodynamic pressure P with the right flank that acts on second slide block 144 3Balance, then first slide block 142 and second slide block 144 move to its initial position.Reduction valve 100 provides oral-lateral all the time and has the fluid that is reduced to the prespecified range internal pressure no matter the guiding valve 140 of inlet side hydrodynamic pressure size by as described moves by the horizontal slip mode.
As mentioned above, reduction valve is included as the guiding valve 140 that decompression is provided and designs according to the preferred embodiment of the invention.Guiding valve 140 comprises first slide block 142 and second slide block 144.When having fluid above the pressure of setup pressure value when being incorporated into 100 li of reduction valve, the hydrodynamic pressure P of a side by acting on first slide block 142 2Hydrodynamic pressure P with a side that acts on second slide block 144 3Between difference move first slide block 142 and second slide block 144 by the direction that compression is configured in the control spring 132 in second chamber 130.After this, as the hydrodynamic pressure P of the left surface that acts on first slide block 142 2Hydrodynamic pressure P with the right flank that acts on second slide block 144 3During balance, first slide block 142 and second slide block 144 turn back to their initial position.Therefore, the pressure that is incorporated into the fluid of 100 li of reduction valve reduces, and reduction valve 100 is no matter inlet side hydrodynamic pressure size provides and has the fluid that is reduced to the prespecified range internal pressure.In addition, reduction valve 100 according to the present invention has simple internal construction and low manufacture cost is arranged.
Though the present invention at length represents with reference to its special embodiment and narrate, those skilled in the art can understand not break away from as the spirit and scope of the present invention that limited by additional claim and can carry out conversion on the various formal and details.

Claims (13)

1, a kind of reduction valve comprises:
One valve casing, it comprises and is used for from the compressed fluid supply source that is configured in above-mentioned reduction valve outside fluid being incorporated into inlet in the above-mentioned reduction valve, being used for discharging from above-mentioned reduction valve outlet and a plurality of fluid flowing passage of fluid, wherein, the inside of the above-mentioned reduction valve of above-mentioned valve casing sealing;
One first fluid with first chamber is accepted part, wherein, first chamber is formed by the above-mentioned valve casing and first sealing cover that is installed in the above-mentioned valve casing in the outer end in first chamber, and the fluid of the first chamber acceptance from entering the mouth and introducing, wherein above-mentioned first fluid receiving portion branch is formed on first side of the bottom of above-mentioned valve casing;
One second fluid with second chamber is accepted part, wherein, second chamber is by above-mentioned valve casing and have the control lid of the control spring in the above-mentioned valve casing in the outer end that is installed in second chamber to form, and the second chamber fluid that be communicated with the first chamber fluid and accept to introduce from first chamber, the second wherein above-mentioned fluid is accepted part flatly to divide second side of the bottom that relative position is formed on above-mentioned valve casing with above-mentioned first fluid receiving portion;
One three-fluid with the 3rd chamber is accepted part, and wherein, the 3rd chamber is communicated with second chamber and outlet fluid, in the 3rd chamber one-way valve is arranged, and above-mentioned three-fluid receiving portion branch is formed on the top of above-mentioned valve casing;
Be used for reducing when hydrodynamic pressure in being incorporated into above-mentioned reduction valve surpasses setup pressure value the guiding valve of hydrodynamic pressure.
2, reduction valve according to claim 1, wherein, one vertical partition is set so that first chamber is separated with second chamber in above-mentioned valve casing, and at least one slide opening that is used for flatly moving forward and backward above-mentioned guiding valve is horizontally formed at above-mentioned vertical partition.
3, reduction valve according to claim 1, wherein, above-mentioned guiding valve comprises that first cylindrical slider, second cylindrical slider and at least one are used for the connecting bolt that the first above-mentioned slide block and above-mentioned second slide block are coupled together.
4, reduction valve according to claim 3, wherein, the first above-mentioned slide block is configured in first chamber so that the first above-mentioned slide block slides in first chamber by substantially horizontal, and the first above-mentioned slide block comprises at least one through hole, first groove and puts into first silicon cell of the first above-mentioned groove.
5, reduction valve according to claim 3, wherein, above-mentioned second slide block be configured in second chamber in case the second above-mentioned slide block by substantially horizontal in second chamber, slide, this second slide block is by being configured in the above-mentioned control spring elastic support in second chamber and comprising that at least one placement hole and at least one are installed in the 2nd O type ring of the lateral parts of second slide block.
6, reduction valve according to claim 3, wherein, above-mentioned connecting bolt was inserted through hole and above-mentioned slide opening, is extended into second chamber and insert placement hole by predetermined order.
7, reduction valve according to claim 3, wherein, when having fluid above the pressure of setup pressure value when being incorporated in the above-mentioned reduction valve, the hydrodynamic pressure of the left surface by acting on the first above-mentioned slide block and the difference that acts between the hydrodynamic pressure of right flank of the second above-mentioned slide block relative with the first above-mentioned slide block move above-mentioned guiding valve by the direction that compression is configured in the above-mentioned control spring in second chamber, and when the hydrodynamic pressure of the left surface that acts on the first above-mentioned slide block with when acting on the fluid pressure balance of right flank of the second above-mentioned slide block, guiding valve turns back to initial position.
8, reduction valve according to claim 1, wherein, above-mentioned fluid flowing passage comprise infeed mouthful first a vertical fluid flow channel that is communicated with usefulness with the first chamber fluid, for first chamber be communicated with the second chamber fluid usefulness the second horizontal liquid flow channel, supply second chamber to be communicated with the 3rd vertical fluid flow channel of usefulness with the 3rd chamber fluid and supply the 3rd chamber and export the 4th horizontal liquid flow channel that fluid is communicated with usefulness.
9, reduction valve according to claim 8, wherein, the above-mentioned second horizontal liquid flow channel comprised for first connecting tube, at least one has second connecting tube of the diameter littler than the diameter of the first above-mentioned connecting tube and at least one that the third connecting pipe of the diameter littler than the diameter of the second above-mentioned connecting tube is arranged.
10, reduction valve according to claim 9, wherein, the first above-mentioned connecting tube, the second above-mentioned connecting tube and above-mentioned third connecting pipe are formed on the above-mentioned partition.
11, reduction valve according to claim 1, wherein, above-mentioned one-way valve comprises valve body, be used for second sealing cover that the valve spring of the above-mentioned valve body of elastic support and cooperation push above-mentioned valve casing so that form the 3rd chamber, and wherein above-mentioned valve body comprises second groove of the intermediate portion that is formed on above-mentioned valve body and puts into second silicon cell of second groove.
12, reduction valve according to claim 11, wherein, at least one the 3rd O type ring is configured in the junction between second above-mentioned sealing cover and the above-mentioned valve casing.
13, reduction valve according to claim 1, wherein, at least one O type ring is configured in the junction between first above-mentioned sealing cover and the above-mentioned valve casing.
CN96112290A 1995-07-29 1996-07-29 Reducing valve Pending CN1152088A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR23058/95 1995-07-29
KR1019950023058A KR0166646B1 (en) 1995-07-29 1995-07-29 Pressure reducing valve

Publications (1)

Publication Number Publication Date
CN1152088A true CN1152088A (en) 1997-06-18

Family

ID=19422172

Family Applications (1)

Application Number Title Priority Date Filing Date
CN96112290A Pending CN1152088A (en) 1995-07-29 1996-07-29 Reducing valve

Country Status (3)

Country Link
JP (1) JPH09105470A (en)
KR (1) KR0166646B1 (en)
CN (1) CN1152088A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100453870C (en) * 2005-09-30 2009-01-21 陈雪峰 Safety valve with pressure releaser for electric water heater

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CN109139931B (en) * 2018-10-25 2023-10-20 宁波一机阀门制造有限公司 Gate valve with steady voltage structure
KR102030665B1 (en) * 2019-04-25 2019-11-08 (주)동양특장 Two way valve for vacuum lorry having function of frozen to burst and provided therewith
CN117628214B (en) * 2024-01-25 2024-03-29 四川中油乐仪能源装备制造股份有限公司 Double-acting throttle stop valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100453870C (en) * 2005-09-30 2009-01-21 陈雪峰 Safety valve with pressure releaser for electric water heater

Also Published As

Publication number Publication date
KR0166646B1 (en) 1999-03-30
KR970007023A (en) 1997-02-21
JPH09105470A (en) 1997-04-22

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