CN209540133U - A kind of double membrane configurations hold pressure pressure release control pilot valve - Google Patents
A kind of double membrane configurations hold pressure pressure release control pilot valve Download PDFInfo
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- CN209540133U CN209540133U CN201920056628.1U CN201920056628U CN209540133U CN 209540133 U CN209540133 U CN 209540133U CN 201920056628 U CN201920056628 U CN 201920056628U CN 209540133 U CN209540133 U CN 209540133U
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- cavity
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- resorption
- pilot valve
- sealing block
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Abstract
The utility model discloses a kind of double membrane configurations to hold pressure pressure release control pilot valve, it includes epicoele, the bottom of the epicoele is equipped with lumen, the bottom of the lumen is equipped with cavity of resorption, upper diaphragm is installed between the epicoele and lumen, lower diaphragm plate, the upper diaphragm and lower diaphragm plate are installed between the lumen and cavity of resorption, entire pilot valve is separated into three spring cavity, pressure water cavity and drainage cavity cavitys；Movable axis is connected between the upper diaphragm and lower diaphragm plate, the bottom of the movable axis is equipped with sealing block, and the sealing block is matched with cavity of resorption；The activity shaft compression unclamps open and close control of the sealing block realization to pilot valve drainage cavity water flow.The phenomenon that this control makes movable axis when moving up and down, and keeps the leakproofness of water cavity between diaphragm, avoids the movable axis leak and cavitation erosion that single membrane configuration is easy to appear, substantially increase the service life and operational reliability of control pilot valve.
Description
Technical field
The utility model relates to a kind of double membrane configurations to hold pressure pressure release control pilot valve, belong to device field of going on board.
Background technique
As shown in figure 8, traditional single membrane configuration hold pressure pressure release control pilot valve mainly by: adjust bolt, spring, diaphragm and
The part such as axis forms.It holds after pressing relief valve to be usually used in the pressure reducing valve of water supply network, the hydraulic pressure of pipe network can be made to be maintained at setting limit
In degree, when hydraulic pressure is more than setting limit, pressure release can be opened under the control of control pilot valve by holding pressure relief valve.Normal condition
Under, when relief valve import lateral pressure is not up to set action value, the pressure water of control pilot valve import enters pressure release through pilot valve lower end
The control chamber of valve main valve closes relief valve main valve；When water inlet pressure is greater than the set value, water pressure pushing control pilot valve every
Film moves upwards, and axis moves upwards therewith, opens axis lower end and control piper sealing position, the pressure water of inlet side and pressure release
Water in valve main valve control chamber is discharged by open-part through discharge outlet, makes relief valve main valve control chamber decompression, in hydraulic thrust
It acts on lower relief valve main valve to automatically open, realizes decompression function.
Single membrane configuration holds sealing means between pressure pressure release control pilot valve axis and control pilot valve body and uses " O " coil structures,
It is pressure water area that " O ", which encloses top, and it is drainage that " O ", which encloses lower part,.Axis easily causes the abrasion of " O " circle in upper and lower movement, from
And reduce the sealing effect at the position；As " O " circle sealing effect reduces, the pressure water on top can enclose position jet stream by " O "
To lower part drainage, it will lead to axis and cavitate with " O " circle contact site, so that the water leakage of sealing position be made constantly to increase
Greatly；The water in the pressure water and relief valve main valve control chamber of inlet side is discharged largely by discharge outlet, so as to cause letting out
Pressure valve main valve does not reach setting pressure and opens in advance, influences the normal water supply pressure of pipeline；Water after relief valve is opened simultaneously flows into
The leakage sump for entering workshop, may cause the Well Water Level rapid increase that catchments, or even cause water logging workshop accident.
Utility model content
The utility model aim is to provide a kind of double membrane configurations and holds pressure pressure release control pilot valve, this control makes movable axis upper
When lower movement, keep the leakproofness of water cavity between diaphragm, avoid movable axis leak that single membrane configuration is easy to appear and
The phenomenon that cavitation erosion, substantially increases the service life and operational reliability of control pilot valve.
In order to realize above-mentioned technical characteristic, purpose of the utility model is realized as follows: a kind of double membrane configurations are held
Pressure release is pressed to control pilot valve, it includes epicoele, and the bottom of the epicoele is equipped with lumen, and the bottom of the lumen is equipped with cavity of resorption,
Upper diaphragm is installed between the epicoele and lumen, lower diaphragm plate is installed, the upper diaphragm is under between the lumen and cavity of resorption
Entire pilot valve is separated into three spring cavity, pressure water cavity and drainage cavity cavitys by diaphragm；Connect between the upper diaphragm and lower diaphragm plate
It is connected to movable axis, the bottom of the movable axis is equipped with sealing block, and the sealing block is matched with cavity of resorption；The activity shaft compression
Or it unclamps sealing block and realizes that the open and close to pilot valve drainage cavity water flow control.
It is fixedly linked between the epicoele and lumen by epicoele fixing bolt, and upper diaphragm is pressed abd fixed on two chambers
Between.
It is fixedly linked between the lumen and cavity of resorption by cavity of resorption fixing bolt, and lower diaphragm plate is pressed abd fixed on two chambers
Between.
The top of the movable axis is fixedly linked by upper diaphragm fixation member with upper diaphragm, and the bottom of the movable axis is logical
Lower diaphragm plate fixation member is crossed to be fixedly linked with lower diaphragm plate.
The inside of the epicoele is simultaneously equipped with spring at the top of lower diaphragm plate, is equipped at the top of the spring for adjusting
The adjustment bolt of its compression degree is saved, the bottom of the spring and the upper diaphragm fixation member of upper diaphragm are fixedly linked.
It is provided with lumen water inlet and lumen discharge outlet on the lumen, cavity of resorption discharge outlet is provided on the cavity of resorption under
Chamber water inlet is connected between the lumen discharge outlet and cavity of resorption water inlet by communicating pipe；Main valve is provided on the communicating pipe
Control chamber interface.
The lumen water inlet is connected with the pipeline after the pressure reducing valve of water supply network.
The center of the cavity of resorption is machined with sealing block movable chamber, and the two sides of the bottom of the sealing block movable chamber are provided with draining
Chamber.
The sealing block includes sealing block main body, and the sealing block movable chamber inside the sealing block main body and cavity of resorption, which is constituted, to be slided
The bottom end face of dynamic cooperation, the sealing block main body is fixedly installed with sealing plate and gasket by sunk screw.
The utility model has the advantages that:
1, there are two diaphragms for the utility model design, constitute a set of movable device by two diaphragms and a movable axis,
It can make movable axis when moving up and down, keep the leakproofness of water cavity between diaphragm, avoid single membrane configuration and be easy
The phenomenon that existing movable axis leak and cavitation erosion, substantially increase the service life and operational reliability of control pilot valve.
2, due to the interaction of upper and lower diaphragm, under identical hydraulic condition, double membrane configurations pair of the utility model
The active force of movable axis is less than traditional single membrane configuration to the active force of movable axis, so as to select the bullet of smaller elastic force
Spring reduces requirement of the control pilot valve to spring section performance condition.
3, the scheme that traditional sealing plate is bonded in sealing block is compared, the sealing plate in the utility model on sealing block passes through
Gasket and sunk screw are fixed, and convenient for being overhauled and being replaced to sealing plate, reduce maintenance cost.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is the utility model of the whole structure diagram.
Fig. 2 is that the utility model seals block structural diagram.
Fig. 3 is Section A-A figure in the utility model Fig. 2.
Fig. 4 is the utility model lower chamber structure figure.
Fig. 5 is section B-B figure in the utility model Fig. 4.
Fig. 6 is C-C sectional view in the utility model Fig. 4.
Fig. 7 is D-D sectional view in the utility model Fig. 4.
Fig. 8 is that existing hold presses pressure release to control pilot valve structure figure.
In figure: adjustment bolt 1, spring 2, epicoele 3, upper diaphragm fixation member 4, upper diaphragm 5, epicoele fixing bolt 6, lumen
7, movable axis 8, lumen water inlet 9, lumen discharge outlet 10, lower diaphragm plate 11, lower diaphragm plate fixation member 12, cavity of resorption fixing bolt 13,
Main valve control chamber interface 14, communicating pipe 15, cavity of resorption 16, sealing block 17, cavity of resorption discharge outlet 18, cavity of resorption water inlet 19, sealing block are living
Dynamic chamber 20, drainage cavity 21, sealing block main body 22, sealing plate 23, sunk screw 24, gasket 25.
Specific embodiment
The embodiments of the present invention is described further with reference to the accompanying drawing.
Embodiment 1:
Please refer to Fig. 1-8, a kind of double membrane configurations hold pressure pressure release control pilot valve, it includes epicoele 3, the bottom of the epicoele 3
Portion is equipped with lumen 7, and the bottom of the lumen 7 is equipped with cavity of resorption 16, is equipped with upper diaphragm 5 between the epicoele 3 and lumen 7,
Lower diaphragm plate 11 is installed, entire pilot valve is separated into spring by the upper diaphragm 5 and lower diaphragm plate 11 between the lumen 7 and cavity of resorption 16
Three chamber, pressure water cavity and drainage cavity cavitys；Movable axis 8, the movable axis are connected between the upper diaphragm 5 and lower diaphragm plate 11
8 bottom is equipped with sealing block 17, and the sealing block 17 is matched with cavity of resorption 16；The movable axis 8 compresses or unclamps sealing block
17 realize that the open and close to pilot valve drainage cavity water flow control.The utility model will be controlled by 11 two diaphragms of upper diaphragm 5 and lower diaphragm plate
Pilot valve processed is divided into three working chambers, and epicoele is spring cavity, and lumen is pressure water cavity, and cavity of resorption is drainage cavity；Two diaphragms share
One movable axis, the lower end of movable axis are provided with movable sealing block, to the compression of movable sealing block or are unclamped real by movable axis 8
The open and close control of existing pilot valve drainage cavity water flow, and then control the opening and closing for holding pressure relief valve main valve.Double membrane configurations can effectively every
Water flow between disconnected pilot valve pressure water cavity and drainage cavity, avoids causing movable axis gas along movable axis surface jet stream due to pressure water
Erosion improves control pilot valve and holds the operational reliability of pressure relief valve main valve, to improve the reliability of water supply of water supply network.
Further, it is fixedly linked between the epicoele 3 and lumen 7 by epicoele fixing bolt 6, and upper diaphragm 5 is pressed
It fastens between the two chambers.By above-mentioned connection type, easily it can be disassembled and installed.
Further, it is fixedly linked between the lumen 7 and cavity of resorption 16 by cavity of resorption fixing bolt 13, and by lower diaphragm plate 11
It is fixed between the two chambers.By above-mentioned connection type, ensure that easily to be assembled the two.
Further, the top of the movable axis 8 is fixedly linked by upper diaphragm fixation member 4 with upper diaphragm 5, the work
The bottom of moving axis 8 is fixedly linked by lower diaphragm plate fixation member 12 with lower diaphragm plate 11.It can be facilitated by above-mentioned connection type
Movable axis is attached.
Further, the inside of the epicoele 3 and be located at lower diaphragm plate 11 top spring 2, the top of the spring 2 are installed
Portion is equipped with the adjustment bolt 1 for adjusting its compression degree, the bottom of the spring 2 and the upper diaphragm fixed part of upper diaphragm 5
Part 4 is fixedly linked.It can change the reduction length of spring 2 by adjusting bolt 1, thus the elastic force of adjustment spring 2.
Further, it is provided with lumen water inlet 9 and lumen discharge outlet 10 on the lumen 7, is arranged on the cavity of resorption 16
There are cavity of resorption discharge outlet 18 and cavity of resorption water inlet 19, passes through 15 phase of communicating pipe between the lumen discharge outlet 10 and cavity of resorption water inlet 19
Even；Main valve control chamber interface 14 is provided on the communicating pipe 15.Lumen water inlet 9 is derived from the pressure water before valve, and pressure water exists
The surface of upper diaphragm 5 and lower diaphragm plate 11 can be acted in lumen 7 simultaneously, while pressure water can enter master by communicating pipe 15
Valve control chamber and cavity of resorption 16.
Further, the lumen water inlet 9 is connected with the pipeline after the pressure reducing valve of water supply network.
Further, the center of the cavity of resorption 16 is machined with sealing block movable chamber 20, the bottom of the sealing block movable chamber 20
Portion two sides are provided with drainage cavity 21.The drainage cavity 21 is connected with cavity of resorption discharge outlet 18.
Further, the sealing block 17 includes sealing block main body 22, inside the sealing block main body 22 and cavity of resorption 16
The composition of sealing block movable chamber 20 is slidably matched, and the bottom end face of the sealing block main body 22 is fixedly installed with by sunk screw 24
Sealing plate 23 and gasket 25.17 upper portion central hole of sealing block is matched with 8 lower end of movable axis, and 17 lower part of sealing block passes through sealing plate
23 match with 16 upper and lower cavity water inlet 19 of cavity of resorption.When movable axis 8 is pressed downward tight sealing block 17, sealing plate 23 intakes cavity of resorption
Mouth 19 is closed, and when movable axis 8 unclamps sealing block 17 upwards, in cavity of resorption water inlet 19 under hydraulic pressure effect, sealing block 17 is upwards
It is mobile, it is connected to cavity of resorption water inlet 19 with drainage cavity 21, water flow can be discharged by cavity of resorption discharge outlet 18.
Embodiment 2:
A kind of double membrane configurations described in any one hold the control method of pressure pressure release control pilot valve, by lumen water inlet 9 with
Pressure relief valve main intake valve connection is held, main valve control chamber interface 14 is connected to pressure relief valve main valve control chamber is held, cavity of resorption row
The mouth of a river 18 is connected to pressure relief valve main valve discharge outlet is held, and pressure relief valve main valve inlet main pipeline pressure is held in the induction of lumen water inlet 9
Variation；
The active force by upper diaphragm 5, lower diaphragm plate 11 and spring 2 simultaneously of movable axis 8, wherein spring 2 protects movable axis
Downward active force is held, the elastic force for being used to adjust 3 inner spring 2 of epicoele by adjusting adjustment bolt 1；The area of upper diaphragm 5 is big
In the area of lower diaphragm plate 11, in lumen 7 under the action of hydraulic pressure, the upward water pressure that upper diaphragm 5 is subject to is greater than lower diaphragm plate 11
The downward water pressure being subject to, therefore upper diaphragm 5 and lower diaphragm plate 11 generate upward active force, and the active force to movable axis 8
Size it is related with the water pressure at lumen water inlet 9；
When holding pressure relief valve main valve inlet main pipeline pressure and being less than the action value for holding pressure relief valve setting, lumen water inlet
Pressure is smaller at 9, and upper diaphragm 5 and the active force upward to movable axis 8 of lower diaphragm plate 11 are less than the effect downward to movable axis of spring 2
Power, movable axis 8 moves down under the effect of 2 pressure of spring, to compress the sealing block 17 in arrangement and cavity of resorption 16, sealing block 17
It is pressed on cavity of resorption water inlet 19, by the sealing function of sealing plate 23, separates cavity of resorption water inlet 19 and drainage cavity 21, this
When lumen water inlet 9 at the water flow that enters main valve control chamber is entered by lumen discharge outlet 10 and main valve control chamber interface 14
Interior, control is held pressure relief valve main valve and is remained off；
When holding pressure relief valve main valve inlet main pipeline pressure and being greater than or equal to the action value for holding pressure relief valve setting, lumen
It is downward to movable axis that pressure rise at water inlet 9, upper diaphragm 5 and the active force upward to movable axis 8 of lower diaphragm plate 11 are greater than spring 2
Active force, movable axis 8 moves up under upper diaphragm 5 and the effect of 11 pressure of lower diaphragm plate, to unclamp in arrangement and cavity of resorption 16
Sealing block 17, hydraulic pressure jacks up upwards at 17 cavity of resorption water inlet 19 of sealing block, be connected to cavity of resorption water inlet 19 with drainage cavity 21, this
When lumen water inlet 9 at water flow in the water flow and valve control chamber that enter draining is discharged by communicating pipe 15, cavity of resorption discharge outlet 19
Then chamber 21 is discharged by cavity of resorption discharge outlet 18 and holds pressure relief valve export pipeline, hold pressure relief valve main valve due in control chamber
Hydraulic pressure disappears and automatically opens main valve under the action of import hydraulic pressure, lets out the hydraulic pressure of main valve inlet side supervisor's net by holding pressure
Pressure valve discharge, to realize the function of reducing main ductwork pressure.
Above-described embodiment is used to illustrate the utility model, rather than limits the utility model, practical at this
In novel spirit and scope of protection of the claims, to any modifications and changes that the utility model is made, this reality is both fallen within
With novel protection scope.
Claims (9)
1. a kind of double membrane configurations hold pressure pressure release control pilot valve, it is characterised in that: it includes epicoele (3), the bottom of the epicoele (3)
Portion is equipped with lumen (7), and the bottom of the lumen (7) is equipped with cavity of resorption (16), is installed between the epicoele (3) and lumen (7)
Have upper diaphragm (5), is equipped with lower diaphragm plate (11) between the lumen (7) and cavity of resorption (16), the upper diaphragm (5) and lower diaphragm plate
(11) entire pilot valve is separated into three spring cavity, pressure water cavity and drainage cavity cavitys；The upper diaphragm (5) and lower diaphragm plate (11)
Between be connected with movable axis (8), the bottom of the movable axis (8) is equipped with sealing block (17), the sealing block (17) and cavity of resorption
(16) it matches；The movable axis (8) compresses or unclamps sealing block (17) and realizes that the open and close to pilot valve drainage cavity water flow control.
2. a kind of double membrane configurations according to claim 1 hold pressure pressure release control pilot valve, it is characterised in that: the epicoele
(3) be fixedly linked between lumen (7) by epicoele fixing bolt (6), and by upper diaphragm (5) be pressed abd fixed on two chambers it
Between.
3. a kind of double membrane configurations according to claim 1 hold pressure pressure release control pilot valve, it is characterised in that: the lumen
(7) it is fixedly linked between cavity of resorption (16) by cavity of resorption fixing bolt (13), and lower diaphragm plate (11) is pressed abd fixed on two chambers
Between.
4. a kind of double membrane configurations according to claim 1 hold pressure pressure release control pilot valve, it is characterised in that: the movable axis
(8) top is fixedly linked by upper diaphragm fixation member (4) with upper diaphragm (5), the bottom of the movable axis (8) pass through under every
Film fixation member (12) is fixedly linked with lower diaphragm plate (11).
5. a kind of double membrane configurations according to claim 1 hold pressure pressure release control pilot valve, it is characterised in that: the epicoele
(3) inside and being located at the top of lower diaphragm plate (11) is equipped with spring (2), is equipped at the top of the spring (2) for adjusting
The adjustment bolt (1) of its compression degree, the bottom of the spring (2) and upper diaphragm fixation member (4) stationary phase of upper diaphragm (5)
Even.
6. a kind of double membrane configurations according to claim 1 hold pressure pressure release control pilot valve, it is characterised in that: the lumen
(7) lumen water inlet (9) and lumen discharge outlet (10) are provided on, be provided on the cavity of resorption (16) cavity of resorption discharge outlet (18) and
Cavity of resorption water inlet (19) is connected between the lumen discharge outlet (10) and cavity of resorption water inlet (19) by communicating pipe (15)；It is described
Main valve control chamber interface (14) is provided on communicating pipe (15).
7. a kind of double membrane configurations according to claim 6 hold pressure pressure release control pilot valve, it is characterised in that: the lumen into
The mouth of a river (9) is connected with the pipeline after the pressure reducing valve of water supply network.
8. a kind of double membrane configurations according to claim 1 or 6 hold pressure pressure release control pilot valve, it is characterised in that: under described
The center of chamber (16) is machined with sealing block movable chamber (20), and the two sides of the bottom of the sealing block movable chamber (20) are provided with drainage cavity
(21).
9. a kind of double membrane configurations according to claim 1 hold pressure pressure release control pilot valve, it is characterised in that: the sealing block
It (17) include sealing block main body (22), the sealing block movable chamber (20) of sealing block main body (22) and cavity of resorption (16) inside is constituted
It is slidably matched, the bottom end face of sealing block main body (22) is fixedly installed with sealing plate (23) and pad by sunk screw (24)
Piece (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920056628.1U CN209540133U (en) | 2019-01-14 | 2019-01-14 | A kind of double membrane configurations hold pressure pressure release control pilot valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920056628.1U CN209540133U (en) | 2019-01-14 | 2019-01-14 | A kind of double membrane configurations hold pressure pressure release control pilot valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209540133U true CN209540133U (en) | 2019-10-25 |
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ID=68269535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920056628.1U Active CN209540133U (en) | 2019-01-14 | 2019-01-14 | A kind of double membrane configurations hold pressure pressure release control pilot valve |
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| Country | Link |
|---|---|
| CN (1) | CN209540133U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595374A (en) * | 2019-01-14 | 2019-04-09 | 中国长江电力股份有限公司 | A kind of double membrane configurations hold pressure pressure release control pilot valve and control method |
-
2019
- 2019-01-14 CN CN201920056628.1U patent/CN209540133U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595374A (en) * | 2019-01-14 | 2019-04-09 | 中国长江电力股份有限公司 | A kind of double membrane configurations hold pressure pressure release control pilot valve and control method |
| CN109595374B (en) * | 2019-01-14 | 2024-05-10 | 中国长江电力股份有限公司 | Pressure-holding pressure-releasing control pilot valve with double-diaphragm structure and control method |
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