CN207064790U - A kind of double guide's valve control systems of water system pressure-reducing valve - Google Patents
A kind of double guide's valve control systems of water system pressure-reducing valve Download PDFInfo
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- CN207064790U CN207064790U CN201720914419.7U CN201720914419U CN207064790U CN 207064790 U CN207064790 U CN 207064790U CN 201720914419 U CN201720914419 U CN 201720914419U CN 207064790 U CN207064790 U CN 207064790U
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- pressure
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Abstract
The utility model discloses a kind of water system pressure-reducing valve pair guide's valve control systems, it includes main valve, pressurising pilot valve and pressure relief pilot-actuated valve；The equal feedback reduced pressure valve main valve water outlet pipe pressure of two pilot valves, the setting value of pressurising pilot valve are more than pressure relief pilot-actuated valve, and when main valve water outlet pipe pressure is more than the operating pressure setting value of pressurising pilot valve, the aperture of main valve disc is by reducing to reduce downstream pressure；When main valve water outlet pipe pressure is less than the operating pressure setting value of pressure relief pilot-actuated valve, the aperture of main valve disc is by increasing to improve downstream pressure.Most at last the pressure stability of pressure-reducing valve main valve outlet pipe between the operating pressure setting value of two pilot valves.
Description
Technical field
The utility model belongs to hydraulic valve field, the double pilot valve control systems of more particularly to a kind of water system pressure-reducing valve
System.
Background technology
The control system of an existing water system pressure-reducing valve generally only pilot valve, pilot valve feedback reduced pressure valve master
Valve water outlet pipe pressure and compared with spring setting value, so as to adjust the flow that pilot valve leads to main valve outlet pipe in real time, and then adjust
Whole main valve control cavity pressure and control bound aperture, can so make main valve outlet pipe pressure stability near setting value.It is this
Pilot valve in control system is constantly in over-current state, and valve shaft and excessively stream sealing surface in longtime running pilot valve etc. may
By cavitation erosion, make its can not normal work, and influence the stable operation of pressure-reducing valve.
Utility model content
The purpose of this utility model is to provide a kind of water system pressure-reducing valve with double guide's valve control systems, this system master
To be made up of pressurising pilot valve, pressure relief pilot-actuated valve and control piper.The equal feedback reduced pressure valve main valve outlet pipe pressure of two pilot valves
Power, the setting value of pressurising pilot valve are more than pressure relief pilot-actuated valve, when main valve water outlet pipe pressure is more than the operating pressure of pressurising pilot valve
During setting value, the aperture of main valve disc is by reducing to reduce downstream pressure；When main valve water outlet pipe pressure is less than the dynamic of pressure relief pilot-actuated valve
When making pressure set points, the aperture of main valve disc is by increasing to improve downstream pressure.The most pressure of pressure-reducing valve main valve outlet pipe at last
Stabilization is between the operating pressure setting value of two pilot valves.
In order to realize above-mentioned technical characteristic, what the purpose of this utility model was realized in：A kind of water system decompression
The double guide's valve control systems of valve, it includes main valve, pressurising pilot valve and pressure relief pilot-actuated valve；
The main valve water inlet pipe of the main valve is connected by communicating pipe with the pressurising pilot valve water inlet pipe of pressurising pilot valve, institute
State the main valve outlet pipe of main valve by communicating pipe simultaneously with the pressurising pilot valve pressure nozzle of pressurising pilot valve and pressure relief pilot-actuated valve
Pressure relief pilot-actuated valve outlet pipe is connected；
The pressurising pilot valve outlet pipe of the pressurising pilot valve simultaneously with the main valve control chamber of main valve and pressure relief pilot-actuated valve
Pressure relief pilot-actuated valve water inlet pipe is connected.
Main valve diaphragm is installed in the middle part of the valve rod of the main valve, main valve disc is installed in the end of valve rod, the main valve
Main valve diaphragm upper cavity forms main valve control chamber, and the main valve disc is arranged between main valve water inlet pipe and main valve outlet pipe.
The pressurising pilot valve includes pressurising guide's valve diaphragm, and the upper cavity of the pressurising guide valve diaphragm is provided with pressurising
Guide's valve spring, the adjustment bolt for adjusting spring force, the pressurising are installed at the top of the pressurising guide valve spring
The lower surface of guide's valve diaphragm is provided with pressurising pilot valve and dammed disk, and the pressurising pilot valve dams disk and pressurising pilot valve water outlet
Pipe is engaged；Pressurising guide's valve diaphragm lower cavity inside the pressurising pilot valve is communicated with pressurising pilot valve pressure nozzle；Institute
State pressurising pilot valve outlet pipe and pressurising pilot valve needle-valve is installed between cavity that pressurising pilot valve dams where disk.
The pressure relief pilot-actuated valve includes pressure relief pilot-actuated valve barrier film, and the upper cavity of the pressure relief pilot-actuated valve barrier film is provided with pressure release
Guide's valve spring, the adjustment bolt for adjusting spring force, the pressure release are installed at the top of the pressure relief pilot-actuated valve spring
The lower surface of guide's valve diaphragm is provided with pressure relief pilot-actuated valve and dammed disk；Under pressure relief pilot-actuated valve barrier film inside the pressure relief pilot-actuated valve
Portion's cavity is communicated with pressure relief pilot-actuated valve outlet pipe；The cavity that the pressure relief pilot-actuated valve water inlet pipe and pressure relief pilot-actuated valve dam where disk
Between pressure relief pilot-actuated valve needle-valve is installed.
The utility model has the advantages that：
1st, double guide's valve control systems for water system pressure-reducing valve, mainly by pressurising pilot valve, pressure relief pilot-actuated valve with
And control piper composition, the equal feedback reduced pressure valve main valve water outlet pipe pressure of two pilot valves, the setting value of pressurising pilot valve, which is more than, lets out
Pilot valve is pressed, when main valve water outlet pipe pressure is more than the operating pressure setting value of pressurising pilot valve, the aperture of main valve disc will reduce
To reduce downstream pressure；When main valve water outlet pipe pressure is less than the operating pressure setting value of pressure relief pilot-actuated valve, the aperture of main valve disc
By increase to improve downstream pressure；Most the pressure stability of pressure-reducing valve main valve outlet pipe is set in the operating pressure of two pilot valves at last
Between definite value.
2nd, by described double guide's valve control systems, when being run under stable operating mode, the pressure of main valve outlet pipe will
Steadily in the long term between P1, P2, now main valve control chamber 1a is in closed state, and two pilot valves inside are without excessively stream, guide
Valve shaft and excessively stream sealing surface in valve etc. will be less likely to occur to cavitate, thus with more preferable stability and longer use longevity
Life.
3rd, the operating pressure setting value P1 of pressurising pilot valve is higher than the operating pressure setting value P2 of pressure relief pilot-actuated valve, works as main valve
When water outlet pipe pressure is higher than P1, main valve water inlet pipe is by pressurising pilot valve to main valve control chamber water-filling；When main valve water outlet pipe pressure
During less than P2, main valve control chamber is by pressure relief pilot-actuated valve to main valve outlet pipe draining；When main valve water outlet pipe pressure is less than P1 but height
When P2, main valve control chamber neither water-filling nor draining.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is control system schematic diagram of the present utility model.
In figure：1st, main valve；1a, main valve control chamber；1b, main valve diaphragm；1c, main valve disc；1d, main valve water inlet pipe；1e, main valve
Outlet pipe；
2nd, pressurising pilot valve；2a, pressurising guide's valve spring；2b, pressurising guide's valve diaphragm；2c, pressurising pilot valve pressure nozzle；
2d, pressurising pilot valve water inlet pipe；2e, pressurising pilot valve dam disk；2f, pressurising pilot valve needle-valve；2g, pressurising pilot valve water outlet
Pipe；
3rd, pressure relief pilot-actuated valve；3a, pressure relief pilot-actuated valve spring；3b, pressure relief pilot-actuated valve barrier film；3c, pressure relief pilot-actuated valve outlet pipe；
3d, pressure relief pilot-actuated valve dam disk；3e, pressure relief pilot-actuated valve water inlet pipe；3f, pressure relief pilot-actuated valve needle-valve.
Embodiment
Embodiment of the present utility model is described further below in conjunction with the accompanying drawings.
Embodiment 1：
As shown in figure 1, a kind of double guide's valve control systems of water system pressure-reducing valve, it includes main valve 1, pressurising pilot valve
2 and pressure relief pilot-actuated valve 3；
Further, the main valve water inlet pipe 1d of the main valve 1 is entered by communicating pipe and the pressurising pilot valve of pressurising pilot valve 2
Water pipe 2d is connected, main valve outlet pipe 1e pressurising pilot valve senses with pressurising pilot valve 2 simultaneously by communicating pipe of the main valve 1
Pressure pipe 2c is connected with the pressure relief pilot-actuated valve outlet pipe 3c of pressure relief pilot-actuated valve 3；
Further, the pressurising pilot valve outlet pipe 2g of the pressurising pilot valve 2 while the main valve control chamber 1a with main valve 1
It is connected with the pressure relief pilot-actuated valve water inlet pipe 3e of pressure relief pilot-actuated valve 3.
Further, main valve diaphragm 1b is installed in the middle part of the valve rod of the main valve 1, main valve disc is installed in the end of valve rod
1c, the main valve diaphragm 1b upper cavities of the main valve 1 form main valve control chamber 1a, the main valve disc 1c and are arranged on main valve water inlet pipe 1d
Between main valve outlet pipe 1e.
Further, the pressurising pilot valve 2 includes pressurising guide's valve diaphragm 2b, and the pressurising guide valve diaphragm 2b's is upper
Cavity is provided with the top of pressurising guide's valve spring 2a, the pressurising guide valve spring 2a and is provided with for adjusting spring force
Adjustment bolt, the lower surface of the pressurising guide valve diaphragm 2b are provided with pressurising pilot valve and dammed disk 2e, the pressurising pilot valve
The disk 2e that dams is engaged with pressurising pilot valve outlet pipe 2g；Pressurising guide valve diaphragm 2b bottoms inside the pressurising pilot valve 2
Cavity is communicated with pressurising pilot valve pressure nozzle 2c；The pressurising pilot valve outlet pipe 2g and pressurising pilot valve dam where disk 2e
Pressurising pilot valve needle-valve 2f is installed between cavity.
Further, the pressure relief pilot-actuated valve 3 includes pressure relief pilot-actuated valve barrier film 3b, and the pressure relief pilot-actuated valve barrier film 3b's is upper
Cavity is provided with the top of pressure relief pilot-actuated valve spring 3a, the pressure relief pilot-actuated valve spring 3a and is provided with for adjusting spring force
Adjustment bolt, the lower surface of the pressure relief pilot-actuated valve barrier film 3b are provided with pressure relief pilot-actuated valve and dammed disk 3d；The pressure relief pilot-actuated valve 3
Internal pressure relief pilot-actuated valve barrier film 3b lower cavities are communicated with pressure relief pilot-actuated valve outlet pipe 3c；The pressure relief pilot-actuated valve water inlet pipe 3e
Pressure relief pilot-actuated valve needle-valve 3f is installed between the cavity that dams where disk 3d of pressure relief pilot-actuated valve.
Embodiment 2：
Illustrated using diaphragm pressure reduction valve as main valve 1, the situation of piston type decompression is similar.In main valve control chamber 1a
There are main valve diaphragm 1b, main valve disc 1c to be moved up and down with main valve diaphragm 1b.
Further, the top adjustment bolt of pressurising pilot valve 2 can adjust pressurising guide's valve spring 2a pre-pressing force, so as to
Adjust the operating pressure setting value of pressurising pilot valve；It can pass through pressurising pilot valve pressure nozzle 2c's under pressurising guide's valve diaphragm 2b
Sense main valve outlet pipe 1e pressure, and compared with setting value.When induction pressure is less than setting value, pressurising pilot valve is cut
Flow table 2e is in bottom, and pressurising pilot valve water inlet pipe 2d will disconnect with pressurising pilot valve outlet pipe 2g；When induction pressure is higher than
During setting value, pressurising pilot valve dams disk 2e in moving up, and pressurising pilot valve water inlet pipe 2d will be with pressurising pilot valve water outlet
Pipe 2g is connected.Pressurising pilot valve needle-valve 2f is used for the flow of inlet water for adjusting pressurising pilot valve water inlet pipe 2e.
Further, the structure of pressure relief pilot-actuated valve 3 is similar with pressurising pilot valve 2, but has two differences.First, pressure release
Pilot valve outlet pipe 3c is both the outlet pipeline of pressure relief pilot-actuated valve 3, while also to feedback main valve below pressure relief pilot-actuated valve barrier film 3b
Outlet pipe 1e pressure.Disk 3d pressure relief pilot-actuated valve water inlet pipe 3e and pressure relief pilot-actuated valve at the top second, pressure relief pilot-actuated valve dams
Pressure nozzle 3c disconnects, and moving down can connect both, and this point and pressurising pilot valve the disk 2d that dams are opposite.
Further, the pressurising pilot valve 2 and pressure relief pilot-actuated valve 3 can be replaced by the pilot valve of the similar other forms of structure
Generation, as long as its manner of execution is：When the induction pressure of pressurising pilot valve is higher than its operating pressure setting value, its inlet tube and outlet tube
Road connects, otherwise disconnects；And when the induction pressure of pressure relief pilot-actuated valve is less than its operating pressure setting value, its inlet and outlet pipe
Connection, on the contrary disconnect.
Further, control system can increase the annexes such as water inlet main valve, water outlet main valve and filter as needed；Main valve control
It can increase by a valve on chamber 1a processed connecting line, for locking main valve aperture.
Embodiment 3：
Control method using any one water system pressure-reducing valve with double guide's valve control systems, it includes following step
Suddenly：
Step1：Pressurising pilot valve 2 and the top adjustment bolt of pressure relief pilot-actuated valve 3 are adjusted, makes the operating pressure of pressurising pilot valve
Setting value P1 is more than pressure relief pilot-actuated valve barrier film 3b operating pressure setting value P2；
Step2：When the main valve outlet pipe 1e of main valve 1 pressure is more than P1, the pressurising pilot valve disk 2e that dams is moved up,
Pressurising pilot valve water inlet pipe 2d is set to be connected with pressurising pilot valve outlet pipe 2g；Pressure relief pilot-actuated valve dams disk 3d in most upper simultaneously
End, pressure relief pilot-actuated valve water inlet pipe 3e and pressure relief pilot-actuated valve outlet pipe 3c disconnect；Now main valve water inlet pipe 1d will pass through pressurising guide
Valve 2 moves down main valve disc 1c, so that main valve outlet pipe 1e pressure reduces, until small to main valve control chamber 1a water-fillings
In P1；
Step3：When main valve outlet pipe 1e pressure is less than P2, the pressurising pilot valve disk 2e that dams is in bottom, makes to fill
Pilot valve water inlet pipe 2d and pressurising pilot valve outlet pipe 2g is pressed to disconnect；The pressure relief pilot-actuated valve disk 3d that dams is moved down simultaneously, makes to let out
Pressure pilot valve water inlet pipe 3e connects with pressure relief pilot-actuated valve outlet pipe 3c；Now main valve control chamber 1a will by pressure relief pilot-actuated valve 2 to
Main valve outlet pipe 1e drainings, move up main valve disc 1c, increase so as to main valve outlet pipe 1e pressure, until being more than P2；
Step4：By Step1- Step3 self-regulating processes, main valve outlet pipe 1e pressure stability can be made in P1 and P2
Between, now the pressurising pilot valve disk 2e that dams is in bottom, pressurising pilot valve water inlet pipe 2d and pressurising pilot valve outlet pipe 2g
Disconnect；Pressure relief pilot-actuated valve dams disk 3d in topmost simultaneously, pressure relief pilot-actuated valve water inlet pipe 3e and pressure relief pilot-actuated valve outlet pipe 3c
Disconnect, such main valve control chamber 1a neither water-filling nor draining, main valve disc 1c will maintain aperture constant；
Step5：Pressurising pilot valve needle-valve 2f and pressure relief pilot-actuated valve needle-valve 3f aperture is adjusted, main valve control can be adjusted respectively
Chamber 1a water-filling, drainage speed, so as to adjust the reaction speed of main valve.
Above-described embodiment is used for illustrating the utility model, rather than the utility model is limited, in this practicality
New spirit and any modifications and changes in scope of the claims, made to the utility model, both fall within this reality
With new protection domain.
Claims (4)
- A kind of 1. double guide's valve control systems of water system pressure-reducing valve, it is characterised in that：It includes main valve（1）, pressurising guide Valve（2）And pressure relief pilot-actuated valve（3）；The main valve（1）Main valve water inlet pipe（1d）Pass through communicating pipe and pressurising pilot valve（2）Pressurising pilot valve water inlet pipe （2d）It is connected, the main valve（1）Main valve outlet pipe（1e）By communicating pipe simultaneously with pressurising pilot valve（2）Pressurising guide Valve pressure nozzle（2c）And pressure relief pilot-actuated valve（3）Pressure relief pilot-actuated valve outlet pipe（3c）It is connected；The pressurising pilot valve（2）Pressurising pilot valve outlet pipe（2g）While and main valve（1）Main valve control chamber（1a）With let out Press pilot valve（3）Pressure relief pilot-actuated valve water inlet pipe（3e）It is connected.
- A kind of 2. double guide's valve control systems of water system pressure-reducing valve according to claim 1, it is characterised in that：It is described Main valve（1）Valve rod in the middle part of main valve diaphragm is installed（1b）, main valve disc is installed in the end of valve rod（1c）, the main valve（1） Main valve diaphragm（1b）Upper cavity forms main valve control chamber（1a）, the main valve disc（1c）It is arranged on main valve water inlet pipe（1d）And master Valve outlet pipe（1e）Between.
- A kind of 3. double guide's valve control systems of water system pressure-reducing valve according to claim 1, it is characterised in that：It is described Pressurising pilot valve（2）Including pressurising guide's valve diaphragm（2b）, the pressurising guide valve diaphragm（2b）Upper cavity pressurising is installed Guide's valve spring（2a）, the pressurising guide valve spring（2a）Top adjustment bolt for adjusting spring force is installed, The pressurising guide valve diaphragm（2b）Lower surface pressurising pilot valve be installed dammed disk（2e）, the pressurising pilot valve dams disk （2e）With pressurising pilot valve outlet pipe（2g）It is engaged；The pressurising pilot valve（2）Internal pressurising guide's valve diaphragm（2b）Under Portion's cavity is communicated with pressurising pilot valve pressure nozzle（2c）；The pressurising pilot valve outlet pipe（2g）Dam disk with pressurising pilot valve （2e）Pressurising pilot valve needle-valve is installed between the cavity at place（2f）.
- A kind of 4. double guide's valve control systems of water system pressure-reducing valve according to claim 1, it is characterised in that：It is described Pressure relief pilot-actuated valve（3）Including pressure relief pilot-actuated valve barrier film（3b）, the pressure relief pilot-actuated valve barrier film（3b）Upper cavity pressure release is installed Guide's valve spring（3a）, the pressure relief pilot-actuated valve spring（3a）Top adjustment bolt for adjusting spring force is installed, The pressure relief pilot-actuated valve barrier film（3b）Lower surface pressure relief pilot-actuated valve be installed dammed disk（3d）；The pressure relief pilot-actuated valve（3）It is interior The pressure relief pilot-actuated valve barrier film in portion（3b）Lower cavity is communicated with pressure relief pilot-actuated valve outlet pipe（3c）；The pressure relief pilot-actuated valve water inlet pipe （3e）Dam disk with pressure relief pilot-actuated valve（3d）Pressure relief pilot-actuated valve needle-valve is installed between the cavity at place（3f）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720914419.7U CN207064790U (en) | 2017-07-26 | 2017-07-26 | A kind of double guide's valve control systems of water system pressure-reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720914419.7U CN207064790U (en) | 2017-07-26 | 2017-07-26 | A kind of double guide's valve control systems of water system pressure-reducing valve |
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| Publication Number | Publication Date |
|---|---|
| CN207064790U true CN207064790U (en) | 2018-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720914419.7U Active CN207064790U (en) | 2017-07-26 | 2017-07-26 | A kind of double guide's valve control systems of water system pressure-reducing valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246498A (en) * | 2017-07-26 | 2017-10-13 | 中国长江电力股份有限公司 | A kind of water system pressure-reducing valve double guide's valve control systems and control method |
-
2017
- 2017-07-26 CN CN201720914419.7U patent/CN207064790U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246498A (en) * | 2017-07-26 | 2017-10-13 | 中国长江电力股份有限公司 | A kind of water system pressure-reducing valve double guide's valve control systems and control method |
| CN107246498B (en) * | 2017-07-26 | 2023-10-20 | 中国长江电力股份有限公司 | Double pilot valve control system and control method for pressure reducing valve of water supply system |
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