CN202327281U - Membrane type pressure reducing valve - Google Patents
Membrane type pressure reducing valve Download PDFInfo
- Publication number
- CN202327281U CN202327281U CN2011204611256U CN201120461125U CN202327281U CN 202327281 U CN202327281 U CN 202327281U CN 2011204611256 U CN2011204611256 U CN 2011204611256U CN 201120461125 U CN201120461125 U CN 201120461125U CN 202327281 U CN202327281 U CN 202327281U
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Abstract
The utility model relates to a membrane type pressure reducing valve which comprises a main valve and a membrane type control device, wherein the main valve comprises a valve body, a valve clack and a valve rod; and the valve seat is arranged in an exit channel of the valve body. The membrane type pressure reducing valve is characterized in that a guide sleeve is arranged at a valve seat exit; the valve clack, the guide sleeve and a bottom cover form a spring cavity; a through hole is arranged between the upper plane and the lower plane of the valve clack; a control valve is arranged between the main valve and the membrane control device; the control valve comprises a control valve body, a valve core, a control membrane, a setting spring and a return spring; the control valve body is provided with an entrance, an exit and a control port; a control cavity is formed between the control membrane and the control valve body; the entrance channel medium of the main valve is led into the entrance of the control valve, and the exit channel medium is led into the control cavity and a lower membrane chamber of the membrane control device; the exit of the control valve is communicated with an upper membrane chamber and the lower membrane chamber of the membrane control device respectively; and an overpressure one-way valve is arranged on the pipeline led to the lower membrane chamber. The membrane type pressure reducing valve has the advantages of high pressure reducing precision, good pressure stabilizing effect, high using reliability, long service life and the like, and is suitable for the pressure reducing valve of the flammable systems of oxygen and the like.
Description
Technical field
The utility model relates to valve field, particularly about a kind of diaphragm type reduction valve.
Background technique
The diaphragm type reduction valve is made up of main valve and diaphragm control gear, is the diaphragm type pressure maintaining valve of ZL94214819.3 like the patent No., comprises valve body, spool, valve seat, spring and adjustment screw etc., it is characterized in that in the bellows on valve body top, being provided with flexible sheet; Flexible sheet connects through drive link and spool; The flowing medium of valve inner control side communicates with the following chamber of diaphragm through a passage.Controlled like this pressure directly affacts on the flexible sheet, and then drives valve core movement, thus the open degree of control orifice.Its major defect is that outlet pressure can receive the variation of inlet pressure and fluctuates, low, the weak effect of the precision of voltage regulation, and also diaphragm is subject to the impact of pressure medium and damages, and product reliability is poor, working life is short.
Summary of the invention
The purpose of the utility model is the shortcoming that exists to existing technology, the diaphragm type reduction valve that a kind of precision height that reduces pressure is provided, voltage regulation result is good, operational safety is high, the life-span is long.
The technological scheme of the utility model comprises main valve and diaphragm control gear, and the diaphragm control gear comprises bellows and diaphragm, and diaphragm is isolated into upper film chamber and following film chamber with bellows in the middle of being installed in bellows; Main valve comprises valve body, flap and valve rod; In the valve outlet passage, be provided with valve seat, the plane has the sealing surface that cooperatively interacts with valve seat on the flap, top shock mount between the plane on lower plane and the valve body bottom; Planar central is connected on valve rod lower end and the flap, and the upper end is connected with diaphragm lower plane center fixation; Mainly be that the valve seat outlet is provided with guide sleeve; This guide sleeve top is shaped on through hole; Motive sealing cooperates between flap external cylindrical surface bottom and the guide sleeve inner round wall, forms spring chamber between flap, guide sleeve, the bottom three, is shaped on pressure compensation opening between plane and the lower plane on the flap; Be provided with control valve between main valve and the diaphragm control gear; Said control valve comprises control valve body, application valve cover, spool, control diaphragm, setting spring, return spring; Control valve body is shaped on import, outlet and control mouth; Between import and outlet, be shaped on the control valve seat that cooperates with seal spool, the edge sealing of control diaphragm is fitted between control valve body and the application valve cover, and constitutes control chamber between the control valve body; Setting spring is installed on the control diaphragm between planar central and the application valve cover; The spool upper-end surface contacts with control diaphragm lower plane center, spool upper end periphery and control valve body Spielpassung, and return spring is installed between spool lower end surface and the lower cover; The import of control valve body is communicated with the inlet passage of valve body of main valve through pressure inlet tube; Outlet is communicated with following film chamber with the upper film chamber of diaphragm control gear respectively through tee union;, tee union is provided with the superpressure one-way valve on the pipeline of film chamber under leading to; The outlet passage of valve body is communicated with the control mouth of following film chamber and control valve body respectively, and the control mouth is communicated with control chamber.
In above technological scheme; Spool is made up of valve core frame and rubber seal ring; The rubber seal ring bottom is flush-mounted in the annular chamber of valve core frame bottom, and the upper end is shaped on the sealing surface that cooperatively interacts with control valve seat, and the cylindrical wall and the lower cover endoporus of valve core frame annular chamber are slidingly matched.
The utility model has the advantages that main valve inlet passage pressure medium is through control valve introducing upper film chamber and following film chamber; And between the outlet of film chamber and control valve the superpressure one-way valve is being set down; The pressure reduction maintenance is constant up and down to make diaphragm, and it is damaged to avoid diaphragm impacted by pressure medium, simultaneously main valve outlet passage pressure is introduced the control chamber of control valve; The aperture of control control valve; Thereby control main valve flap aperture makes main valve outlet passage pressure not receive the influence of its inlet passage pressure surge, and its decompression precision is high, voltage regulation result is good, operational safety is high, the life-span is long.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the structural representation of control valve among the utility model Fig. 1.
Embodiment
Diaphragm type reduction valve as shown in Figure 1; Comprise main valve and diaphragm control gear, the diaphragm control gear comprises bellows 16 and diaphragm 14, and diaphragm 14 is isolated into upper film chamber and following film chamber with bellows 16 in the middle of being installed in bellows 16; Main valve comprises valve body 10, flap 5 and valve rod 9; In valve body 10 outlet passages, be provided with valve seat 8, the plane has the sealing surface that cooperatively interacts with valve seat 8 on the flap 5, top shock mount 4 between the plane on the bottom 1 of flap 5 lower planes and valve body 10; Planar central is connected on valve rod 9 lower ends and the flap 5, and the upper end is connected with diaphragm 14 lower plane center fixation.Valve seat 8 outlets are provided with guide sleeve 3; These guide sleeve 3 tops are shaped on through hole, and this through hole is communicated with valve body 10 and imports and exports passages when flap 5 is opened, and motive sealing cooperates between flap 5 external cylindrical surface bottoms and guide sleeve 3 inner round wall; Form spring chamber between flap 5, guide sleeve 3, bottom 1 three; Be shaped on pressure compensation opening between plane and the lower plane on the flap 5, valve body 10 inlet passage pressure mediums are introduced in the spring chamber, make flap applanation balance about in the of 5.
Be provided with control valve 18 between main valve and the diaphragm control gear; This control valve 18 comprises control valve body, application valve cover, spool, control diaphragm 18.9, setting spring 18.11, return spring 18.2; Be shaped on import, outlet 18.15 and control mouthful on the control valve body, in import with export and be shaped on the control valve seat that cooperates with seal spool between 18.15, the edge of control diaphragm 18.9 seals and is fitted between control valve body and the application valve cover; Make between itself and the control valve body and constitute control chamber; Setting spring 18.11 is installed on the control diaphragm 18.9 between planar central and the application valve cover, and the spool upper-end surface contacts spool upper end periphery and control valve body Spielpassung with control diaphragm 18.9 lower plane centers; When main valve is closed; Medium is discharged to the valve body of main valve outlet passage from control valve outlet 18.15 through control chamber and control mouth in the diaphragm control gear upper film chamber, and return spring 18.2 is installed between spool lower end surface and the lower cover 18.1, and is as shown in Figure 2.Be provided with lower spring cup 18.10 between the lower end of setting spring 18.11 and the control diaphragm 18.9, the upper end contacts through the upper spring seat 18.12 and bolt 18.13 lower ends of adjusting, and the upper end of the bolt 18.13 of adjusting is provided with regulating handle 18.14.Lower spring cup 18.10 is fixedly mounted on control diaphragm 18.9 central positions by bolting pad 18.8, and the lower end surface of bolting pad 18.8 and the upper-end surface of spool contact.
Like Fig. 1, shown in Figure 2; The import of control valve body is communicated with the inlet passage of valve body 10 through pressure inlet tube 12; Outlet 18.15 is communicated with following film chamber with the upper film chamber of diaphragm control gear respectively through tee union 17; Under tee union 17 leads to, be provided with superpressure one-way valve 15 on the pipeline of film chamber, when the pressure reduction between upper film chamber and the following film chamber surpassed superpressure one-way valve 15 setting pressures, superpressure one-way valve 15 was opened medium is introduced film chamber down; Make the Maximum differential pressure between upper film chamber and the following film chamber keep constant, avoid diaphragm to receive the pressure medium concussion fracture.The setting pressure of superpressure one-way valve 15 is 0.1-0.2MPa.The outlet passage of valve body 10 is communicated with the control mouth of following film chamber and control valve body respectively, and the control mouth is communicated with control chamber, and when control valve 18 was closed, the media in the bellows 16 discharged to valve body 10 outlet passages fast.Be fixedly connected with import coupling nut 18.6 by inlet union 18.7 between the import of pressure inlet tube 12 and control valve 18, between inlet union 18.7 and control valve body, be provided with sealing gasket 18.5.
Spool is made up of valve core frame 18.3 and rubber seal ring 18.4; Rubber seal ring 18.4 bottoms are flush-mounted in the annular chamber of valve core frame 18.3 bottoms; The upper end is shaped on the sealing surface that cooperatively interacts with control valve seat, and the cylindrical wall of valve core frame 18.3 annular chambers and lower cover 18.1 endoporus are slidingly matched.
The outlet passage of valve body 10 is connected with the control mouth through control mouthful joint 18.16 by honeycomb duct 19.Valve rod 9 upper ends are fixedly connected with diaphragm 14 through membranous disc 13; Be provided with stuffing box gland 11 between valve rod 9 middle parts and the valve body 10; Valve seat 8 is provided with seal ring 7, and flap 5 excircles are provided with O-ring seals 6 and cooperate with guide sleeve 3 inner round wall motive sealings, are provided with sealing gasket 2 between valve body 10 and the bottom 1.
Its control procedure is: the import that valve body 10 inlet passage pressure mediums get into control valve 18 through pressure inlet tube 12; Spool is in opening state under the effect of setting spring 18.11; Pressure medium is opened main valve from the upper film chamber's promotion diaphragm 14, valve rod 9, the flap 5 that export 18.15 entering bellows 16; When the pressure reduction between upper film chamber and the following film chamber surpasses the setting pressure of superpressure one-way valve 15; 15 unlatchings of superpressure one-way valve are with film chamber under the medium introducing, and the control chamber of film chamber and control valve 18 under valve body 10 outlet passage pressure mediums get into simultaneously makes downforce maintenance balance on the diaphragm 14.When valve body 10 outlet passage pressure mediums surpassed setting spring 18.11 pressure set points of control valve 18, control diaphragm 18.9 promoted setting springs 18.11 and moves up, and rubber seal ring 18.4 moves to control valve seat; The aperture of control valve 18 reduces; Outlet 18.15 place's pressure are descended, and spring 4 promotes to move on the flap 5, reduces the main valve aperture; Make valve body 10 outlet passage pressure mediums keep constant, do not receive the influence of valve body 10 inlet passage pressure mediums fluctuation.When control valve 18 was closed, the medium in the bellows 16 to the discharging of valve body 10 outlet passages, made the main valve quick closedown fast.
Claims (2)
1. a diaphragm type reduction valve comprises main valve and diaphragm control gear, and the diaphragm control gear comprises bellows (16) and diaphragm (14); Diaphragm (14) is isolated into upper film chamber and following film chamber with bellows (16) in the middle of being installed in bellows (16); Main valve comprises valve body (10), flap (5) and valve rod (9), in valve body (10) outlet passage, is provided with valve seat (8), and flap (5) is gone up the plane and had the sealing surface that cooperatively interacts with valve seat (8); The bottom (1) of flap (5) lower plane and valve body (10) is gone up top shock mount (4) between the plane; Valve rod (9) lower end is gone up planar central with flap (5) and is connected, and the upper end is connected with diaphragm (14) lower plane center fixation, it is characterized in that:
Valve seat (8) outlet is provided with guide sleeve (3); This guide sleeve (3) top is shaped on through hole; Motive sealing cooperates between flap (5) external cylindrical surface bottom and guide sleeve 3 inner round wall; Form spring chamber between flap (5), guide sleeve (3), bottom (1) three, flap (5) is gone up between plane and the lower plane and is shaped on pressure compensation opening;
Be provided with control valve (18) between main valve and the diaphragm control gear; This control valve (18) comprises control valve body, application valve cover, spool, control diaphragm (18.9), setting spring (18.11), return spring (18.2); Be shaped on import, outlet (18.15) and control mouth on the control valve body; Between its import and outlet (18.15), be shaped on the control valve seat that cooperates with seal spool, the edge sealing of control diaphragm (18.9) is fitted between control valve body and the application valve cover, makes between itself and the control valve body to constitute control chamber; Setting spring (18.11) is installed in control diaphragm (18.9) and goes up between planar central and the application valve cover; The spool upper-end surface contacts with control diaphragm (18.9) lower plane center, spool upper end periphery and control valve body Spielpassung, and return spring (18.2) is installed between spool lower end surface and the lower cover (18.1);
The import of control valve body is communicated with the inlet passage of valve body (10) through pressure inlet tube (12); Outlet (18.15) is communicated with following film chamber with the upper film chamber of diaphragm control gear respectively through tee union (17);, tee union (17) is provided with superpressure one-way valve (15) on the pipeline of film chamber under leading to; The outlet passage of valve body (10) is communicated with the control mouth of following film chamber and control valve body respectively, and the control mouth is communicated with control chamber.
2. diaphragm type reduction valve according to claim 1; It is characterized in that spool is made up of valve core frame (18.3) and rubber seal ring (18.4); Rubber seal ring (18.4) bottom is flush-mounted in the annular chamber of valve core frame (18.3) bottom; The upper end is shaped on the sealing surface that cooperatively interacts with control valve seat, and the cylindrical wall of valve core frame (18.3) annular chamber and lower cover (18.1) endoporus are slidingly matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204611256U CN202327281U (en) | 2011-11-15 | 2011-11-15 | Membrane type pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204611256U CN202327281U (en) | 2011-11-15 | 2011-11-15 | Membrane type pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202327281U true CN202327281U (en) | 2012-07-11 |
Family
ID=46439260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204611256U Withdrawn - After Issue CN202327281U (en) | 2011-11-15 | 2011-11-15 | Membrane type pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202327281U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392911A (en) * | 2011-11-15 | 2012-03-28 | 浙江迎日阀门制造有限公司 | Diaphragm type pressure reducing valve |
| CN103047460A (en) * | 2012-12-20 | 2013-04-17 | 浙江元曜阀业有限公司 | Combined dome pressure regulating valve |
| CN103574116A (en) * | 2012-08-05 | 2014-02-12 | 上海三洲自控仪表有限公司 | Novel high-performance self-operated control valve |
| CN104121398A (en) * | 2014-07-14 | 2014-10-29 | 中国海洋石油总公司 | Flow matching device suitable for material conveying of multiple branch pipelines |
| WO2016011951A1 (en) * | 2014-07-22 | 2016-01-28 | 费希尔久安输配设备(成都)有限公司 | Balanced valve element and pressure regulating valve |
-
2011
- 2011-11-15 CN CN2011204611256U patent/CN202327281U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392911A (en) * | 2011-11-15 | 2012-03-28 | 浙江迎日阀门制造有限公司 | Diaphragm type pressure reducing valve |
| CN102392911B (en) * | 2011-11-15 | 2013-04-10 | 浙江迎日阀门制造有限公司 | Diaphragm type pressure reducing valve |
| CN103574116A (en) * | 2012-08-05 | 2014-02-12 | 上海三洲自控仪表有限公司 | Novel high-performance self-operated control valve |
| CN103047460A (en) * | 2012-12-20 | 2013-04-17 | 浙江元曜阀业有限公司 | Combined dome pressure regulating valve |
| CN104121398A (en) * | 2014-07-14 | 2014-10-29 | 中国海洋石油总公司 | Flow matching device suitable for material conveying of multiple branch pipelines |
| CN104121398B (en) * | 2014-07-14 | 2017-01-18 | 中国海洋石油总公司 | Flow matching device suitable for material conveying of multiple branch pipelines |
| WO2016011951A1 (en) * | 2014-07-22 | 2016-01-28 | 费希尔久安输配设备(成都)有限公司 | Balanced valve element and pressure regulating valve |
| US10203047B2 (en) | 2014-07-22 | 2019-02-12 | Fisher Jeon Gas Equipment (Chengdu) Co., Ltd. | Balanced valve element and pressure regulating valve |
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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: 20120711 Effective date of abandoning: 20130410 |
|
| RGAV | Abandon patent right to avoid regrant |