CN205938038U - Pilot -operated type pressure reducing valve - Google Patents
Pilot -operated type pressure reducing valve Download PDFInfo
- Publication number
- CN205938038U CN205938038U CN201620959104.XU CN201620959104U CN205938038U CN 205938038 U CN205938038 U CN 205938038U CN 201620959104 U CN201620959104 U CN 201620959104U CN 205938038 U CN205938038 U CN 205938038U
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- CN
- China
- Prior art keywords
- valve
- main valve
- interface
- pilot
- flow control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a pilot -operated type pressure reducing valve relates to valve technical field. This pilot -operated type pressure reducing valve includes main valve and pilot valve, main valve import and pilot valve import are through first pipeline intercommunication, install flow control valve on the first pipeline, flow control valve includes first interface, second interface and third interface, respectively with the main valve is imported, the pilot valve is imported and the superior connectivity of main valve, set up between two interfaces of third interface and other towards the one -way throttle plate of opening of third interface, be provided with the throttle through -hole on the throttle plate. Because the setting of throttle plate in the flow control valve for the velocity of flow that gets into the main valve epicoele and the medium of outflow main valve epicoele is different, when corresponding main valve is closed and is opened, can both avoid main valve outlet pressure's unexpected increase, has avoided vibration, damage or even the booster of the pipeline of main valve exit linkage.
Description
Technical field
The utility model is related to valve technology field, more particularly, to a kind of piloted reducer.
Background technology
Piloted reducer is the speed to adjust medium using the aperture of opening and closing element in pilot valve control bound, by medium
Reduced pressure, simultaneously by downstream pressure effect adjust opening and closing element aperture, make downstream pressure keep within the specific limits,
In the case that inlet pressure is continually changing, keep outlet pressure in the range of setting, protection life thereafter produces utensil.
As shown in figure 1, the structure of existing piloted reducer mainly includes main valve 1' and pilot valve 2', main valve 1' is by main valve
Diaphragm is divided into epicoele 13' and cavity of resorption 14'.It is provided with pilot valve import and Pilot valve outlet, pilot valve enters below guide's valve film
Mouth connection main valve inlet 11', Pilot valve outlet connects Main valve outlet 12', and pilot valve import is also connected with the epicoele 13' of main valve.
The press water adjusting main valve inlet 11' by adjusting the upper-lower position of guide's valve film is assigned to Main valve outlet 12' and main valve
The water yield of epicoele 13', thus control bound exports the pressure of 12'.Concrete course of action：When Main valve outlet 12' pressure rise,
The active force being subject to below guide's valve film increases, the action upwards of guide's valve film, and pilot valve 2' aperture reduces, and reduces pilot valve
The flow of Main valve outlet 12' is flowed to by main valve inlet 11', because the flow that main valve inlet 11' flows to pilot valve 2' keeps in 2'
Necessarily, therefore increased by the press water that main valve inlet 11' flows into main valve epicoele 13', the opening and closing element in main valve 1' moves downward, and subtracts
The aperture of little main valve 1', so that Main valve outlet 12' reduced pressure, leads to active force below guide's valve film to reduce, is gradually reduced
Enter the flow of the epicoele 13' of main valve until maintaining balance.In the same manner, when the reduced pressure of Main valve outlet 12', main valve 1' opens
Closing member can be moved upwards and be increased main valve 1' aperture, Main valve outlet 12' pressure rise.
When Main valve outlet 12' pressure steeply rises suddenly because of certain reason, due to main valve inlet 11' and pilot valve import
Between press water flow certain, the speed that therefore main valve opening and closing element is closed is relatively fixed, the pipeline that Main valve outlet 12' connects
Pipe line parts can be damaged, or even cause booster because steeply rising of pressure causes pipeline vibration.
Utility model content
The purpose of this utility model is to propose a kind of pressure-reducing valve being capable of slow-opening quick-closing, prevents Main valve outlet pressure
Steeply rise and cause to damage.
For reaching this purpose, the utility model employs the following technical solutions：
A kind of piloted reducer, including main valve and pilot valve, first pipe is passed through in described main valve inlet and pilot valve import
Road connects, and described first pipeline is provided with flow control valve, and described flow control valve includes first interface, second interface and the
Three interfaces, are connected with the epicoele of main valve inlet, pilot valve import and main valve respectively, described 3rd interface and other two interfaces
Between choke block towards the unidirectional unlatching of the 3rd interface is set, described choke block is provided with throttling through hole.
As a kind of preferred version of above-mentioned piloted reducer, it is provided with described flow control valve and described choke block
The valve seat of cooperation, described 3rd interface and valve seat are located at the not homonymy of described choke block respectively.
As a kind of preferred version of above-mentioned piloted reducer, the upper end of described choke block and described flow control valve
Inwall is rotatably connected.
As a kind of preferred version of above-mentioned piloted reducer, sealing cooperation between described valve seat and described choke block.
As a kind of preferred version of above-mentioned piloted reducer, bearing pin and described flow velocity are passed through in the upper end of described choke block
The inwall of control valve connects.
The beneficial effects of the utility model：
The utility model proposes piloted reducer, because the setting of choke block in flow control valve is so that enter to become owner of
Valve epicoele is different with the flow velocity of the medium flowing out main valve epicoele, and during Main valve outlet reduced pressure, medium can only flow out from throttle orifice
Epicoele, main valve is slowly opened so that the pressure at Main valve outlet is slowly increased, it is to avoid the impact to outlet connecting pipe road, main
When valve outlet pressure steeply rises suddenly, choke block is opened inflow epicoele by medium, and flow is larger, main valve quick closedown, it is to avoid
The vibration of pipeline that Main valve outlet connects, damage even booster.
Brief description
Fig. 1 is the structural representation of the piloted reducer that prior art provides；
Fig. 2 is the structural representation of the piloted reducer that the utility model specific embodiment provides；
Fig. 3 is the structural representation of the flow control valve that the utility model specific embodiment provides.
Wherein, 1', main valve；2', pilot valve；
11', main valve inlet；12', Main valve outlet；13', epicoele；14', cavity of resorption；
1st, main valve；2nd, pilot valve；3rd, flow control valve；
11st, main valve inlet；12nd, Main valve outlet；13rd, epicoele；
31st, first interface；32nd, second interface；33rd, the 3rd interface；34th, choke block；35th, throttle through hole；36th, valve seat；37、
Bearing pin.
Specific embodiment
Further illustrate the technical solution of the utility model below in conjunction with the accompanying drawings and by specific embodiment.
As shown in Fig. 2 present embodiment protects a kind of piloted reducer, including main valve 1 and pilot valve 2, main valve 1 is by leading
Valve film is divided into epicoele 13 and cavity of resorption, is provided with pilot valve import and Pilot valve outlet, described pilot valve below guide's valve film
Inlet communication has the epicoele 13 of main valve inlet 11 and main valve 1, main valve inlet 11 and pilot valve import to pass through the first pipeline connection, the
Flow control valve 3 is provided with one pipeline, flow control valve 3 includes first interface 31, second interface 32 and the 3rd interface 33, point
Do not connect with the epicoele 13 of main valve inlet 11, pilot valve 2 import and main valve 1, between the 3rd interface 33 and other two interfaces
It is provided with the choke block 34 towards the unidirectional unlatching of the 3rd interface 33, choke block 34 is provided with throttling through hole 35.
This piloted reducer controls medium to flow to asynchronous uninterrupted by choke block 34, when Main valve outlet 12
When pressure reduces, guide's valve film moves down, and the aperture of pilot valve 2 increases, by the stream of pilot valve import to Pilot valve outlet
Amount increases, and the medium of epicoele 13 is flowed from the 3rd interface 33 to second interface 32, and choke block 34 is in closing shape by pressure medium
State, the therefore medium of epicoele 13 can only slowly flow to pilot valve 2 by the through hole 35 that throttles, and the opening and closing element in main valve 1 is slow upwards
Mobile, main valve 1 is slowly opened so that the pressure of Main valve outlet 12 is slowly increased, it is to avoid the pipe that Main valve outlet 12 is connected
The impact on road；When the pressure of Main valve outlet 12 increases, guide's valve film moves up, and Pilot valve outlet is arrived in pilot valve import
Pathway closure, choke block 34 is opened by the medium of main valve inlet 11 to the 3rd interface 33 direction, and a large amount of media enter epicoele 13, main
Opening and closing element in valve 1 is rapidly moving downward, main valve 1 quick closedown, and the pressure of Main valve outlet 12 is quickly reduced, it is to avoid main valve
The pressure increase of outlet 12 causes to pipeline to damage or causes security incident.
As shown in figure 3, in present embodiment, in flow control valve 3, it is provided with the valve seat 36 with choke block 34 cooperation, the 3rd
Interface 33 and valve seat 36 are located at the not homonymy of choke block 34 respectively, during choke block 34 closure, support on valve seat 36 it is ensured that valve seat
Sealing cooperation between 36 and choke block 34, it is ensured that choke block 34 is in closure, only flows out medium so that main valve in throttling through hole 35
The velocity-stabilization of 1 unlatching.
Preferably, the upper end of choke block 34 is rotatably connected with the inwall of flow control valve 3, and choke block 34 is connecing away from the 3rd
The side of mouth 33 is opened when there is the higher medium of pressure, and after pressure medium reduces, choke block 34 is in the effect of self gravitation
Lower decline, then seal cooperation with valve seat 36.
The upper end of choke block 34 is connected with the inwall of flow control valve 3 by bearing pin 37, is connected firmly, choke block 34 turn
Dynamic flexible.
Note, above are only preferred embodiment of the present utility model.It will be appreciated by those skilled in the art that the utility model is not
It is limited to specific embodiment described here, various obvious changes can be carried out for a person skilled in the art, readjust
With replacement without departing from protection domain of the present utility model.Therefore although being carried out to the utility model by above example
It is described in further detail, but the utility model is not limited only to above example, conceive without departing from the utility model
In the case of, other Equivalent embodiments more can also be included, and scope of the present utility model is determined by scope of the appended claims
Fixed.
Claims (5)
1. a kind of piloted reducer, including main valve (1) and pilot valve (2), main valve inlet (11) and pilot valve import pass through the
It is characterised in that being provided with flow control valve (3) on described first pipeline, described flow control valve (3) includes one pipeline connection
First interface (31), second interface (32) and the 3rd interface (33), respectively with main valve inlet (11), pilot valve import and main valve
(1) epicoele (13) connection, arranges between described 3rd interface (33) and other two interfaces and opens towards the 3rd interface (33) is unidirectional
The choke block (34) opening, described choke block (34) is provided with throttling through hole (35).
2. piloted reducer according to claim 1 it is characterised in that be provided with described flow control valve (3) with
The valve seat (36) that described choke block (34) coordinates, described 3rd interface (33) and valve seat (36) are located at described choke block (34) respectively
Not homonymy.
3. piloted reducer according to claim 1 and 2 is it is characterised in that the upper end of described choke block (34) and institute
The inwall stating flow control valve (3) is rotatably connected.
4. piloted reducer according to claim 2 is it is characterised in that described valve seat (36) and described choke block (34)
Between sealing cooperation.
5. piloted reducer according to claim 3 is it is characterised in that bearing pin is passed through in the upper end of described choke block (34)
(37) it is connected with the inwall of described flow control valve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620959104.XU CN205938038U (en) | 2016-08-26 | 2016-08-26 | Pilot -operated type pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620959104.XU CN205938038U (en) | 2016-08-26 | 2016-08-26 | Pilot -operated type pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205938038U true CN205938038U (en) | 2017-02-08 |
Family
ID=57954000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620959104.XU Withdrawn - After Issue CN205938038U (en) | 2016-08-26 | 2016-08-26 | Pilot -operated type pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205938038U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090369A (en) * | 2016-08-26 | 2016-11-09 | 天津市国威给排水设备制造有限公司 | A kind of piloted reducer |
| CN113217643A (en) * | 2021-06-02 | 2021-08-06 | 中国长江三峡集团有限公司 | Differential pressure type pipe explosion safety valve and method |
| US11953098B2 (en) | 2020-06-30 | 2024-04-09 | Ademco Inc. | Inlet controlled regulating valve |
-
2016
- 2016-08-26 CN CN201620959104.XU patent/CN205938038U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090369A (en) * | 2016-08-26 | 2016-11-09 | 天津市国威给排水设备制造有限公司 | A kind of piloted reducer |
| US11953098B2 (en) | 2020-06-30 | 2024-04-09 | Ademco Inc. | Inlet controlled regulating valve |
| CN113217643A (en) * | 2021-06-02 | 2021-08-06 | 中国长江三峡集团有限公司 | Differential pressure type pipe explosion safety valve and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170208 Effective date of abandoning: 20190319 |
|
| AV01 | Patent right actively abandoned |