CN203730873U - Pressure reducing valve with sealing component - Google Patents
Pressure reducing valve with sealing component Download PDFInfo
- Publication number
- CN203730873U CN203730873U CN201420075963.3U CN201420075963U CN203730873U CN 203730873 U CN203730873 U CN 203730873U CN 201420075963 U CN201420075963 U CN 201420075963U CN 203730873 U CN203730873 U CN 203730873U
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- Prior art keywords
- valve
- piston
- valve body
- pressure
- pressure ring
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Abstract
The utility model provides a pressure reducing valve with a sealing component. The pressure reducing valve with the sealing component comprises a valve body, a compression ring and a membrane, wherein the valve body is sleeved on the compression ring, the membrane is fixedly arranged on the surface of the compression ring contact with the valve body, a soft metal layer is arranged on the membrane, one end of the compression ring is fit with the valve body through the membrane, the soft metal layer is closely fit to the valve body, the valve body comprises an air inlet pipe, an air valve core valve, a low pressure cavity, a piston, a pressure relief spring and an air outlet pipe, the air inlet pipe is communicated with the lower pressure cavity through the air valve core valve, the piston is arranged between the lower pressure cavity and the air outlet pipe in the transverse direction, a channel which runs through the two end surfaces of the piston is arranged in the piston, one end of the piston with a large area is contacted with a top rod of the air valve core valve, one end of the piston with a small area is connected with the pressure relief spring, and a valve body sealing ring is arranged on the periphery of the piston. The pressure reducing valve with the sealing component has the beneficial effects that the pressure reducing valve with the sealing component is suitable for high temperature operating conditions, is excellent in sealing, and enables a pressure reducing valve to better play the roles of to reduce pressure, keep constant pressure and steadily output air.
Description
Technical field
The utility model relates to relief valve unit technical field, refers to especially a kind of reduction valve with black box.
Background technique
Reduction valve is a kind of by regulating, inlet pressure being reduced to the outlet pressure of a certain needs, and relies on the energy of medium itself, makes outlet pressure automatically keep stable valve.
The high-temperature pressure-reduction valve being for example used on motor is present in various high temperature gas medium working environments, and in order to regulate and stable system pressure, as the pressure regulating part of system, the performance of reduction valve directly affects service behaviour and the reliability of system.Owing to being subject to the restriction of applied at elevated temperature condition, reduction valve sensing element adopts metal diaphragm more, and in order to realize the reliable sealing at metal diaphragm place, avoiding low-pressure cavity to reveal affects reduction valve performance, in the urgent need to a kind of diaphragm seal structure is set on reduction valve.
In addition, existing reduction valve is because the sealability of its internal structure piston is not fine, and gas is leaked to the opposite side of piston from low-pressure cavity, causes reduction valve decompression unstable properties, therefore the gas pressure of output is often unstable, in some occasion, brings into play less than best using effect.
Model utility content
The utility model proposes a kind of reduction valve with black box, solved the problem that reduction valve in prior art can not adapt to high-temperature work environment, output unstable gas.
The technical solution of the utility model is achieved in that
A reduction valve with black box, comprising: valve body, pressure ring and diaphragm; Described valve body is sleeved on described pressure ring; Described diaphragm is installed on the surface that described pressure ring contacts with described valve body; Described diaphragm is provided with soft metal layer; Fit by described diaphragm and described valve body in one end of described pressure ring; Described soft metal layer and described valve body fit tightly; Described valve body comprises suction tude, valve inside valve, low-pressure cavity, piston, relief spring and steam outlet pipe; Described suction tude is communicated with described low-pressure cavity through described valve inside valve; Described piston is horizontally installed between described low-pressure cavity and described steam outlet pipe, the inside of described piston is provided with the passage that runs through together its both ends of the surface, one end that described piston area is larger contacts with the push rod of described valve inside valve, and one end that described piston area is less is connected with described relief spring; The surrounding of described piston is provided with valve seals.
Described valve body is provided with step, and described step is positioned at the outer rim place of described soft metal layer; Described pressure ring is provided with convex shoulder, and described convex shoulder and described step are suitable and complement each other to form annular housing; In described annular housing, be filled with sealing material.
The outer side wall of described pressure ring is provided with seal groove, is provided with component sealing circle in described seal groove; In described component sealing circle, be provided with stuffing box packing.
Described stuffing box packing is metal gasket.
Described diaphragm is fixedly connected with described pressure ring by electron beam welding.
Working principle of the present utility model is as follows:
The sealing configuration of black box You San road functional independence forms, first sealing configuration is soft metal layer, soft metal coating is plated in the upper-end surface outer rim of diaphragm, and assembling moment makes coating generation axial compression, in order to the leakage between sealed valve body and diaphragm upper-end surface; Second sealing configuration is metal gasket, and metal gasket is arranged on the axially upper of valve body and pressure ring, utilizes ledge structure to compress, and first sealing configuration is played to redundancy effect; Three seal structures is nonmetal component sealing circle, and component sealing circle is arranged on the axially upper of valve body and diaphragm, utilizes the radial compression of component sealing circle to play San road redundancy seal action.
Valve seals in valve body plays the effect of sealing gas, can avoid gas to be leaked to relief spring opposite side from low-pressure cavity, thereby avoids the motion of piston to be obstructed, and finally plays the effect of stable output gas.
The beneficial effects of the utility model are:
By being set, black box can make reduction valve adapt to hot operation condition, good airproof performance, and three seal structures all has independently sealing function, combines and can realize better sealing effect;
By reducing valve body piston is improved, avoided piston due to the impact that gas leakage causes, make reduction valve bring into play better decompression, constant voltage, the function of stable output gas.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the overall structure schematic diagram of the reduction valve with black box described in the utility model;
Fig. 2 is the structure sectional view of the valve body in Fig. 1.
In figure:
1, soft metal layer, 2, annular housing, 3, component sealing circle, 4, step, 5, convex shoulder, 6, seal groove, 7, pressure ring, 8, diaphragm, 9, electron beam welding, 10, valve body, 11, valve inside valve, 12, low-pressure cavity, 13, piston, 14, relief spring, 15, steam outlet pipe, 16, valve seals, 17, push rod, 18, suction tude.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technological scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiments.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment who obtains under creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment is as depicted in figs. 1 and 2 known, and a kind of reduction valve with black box described in the utility model, comprising: valve body 10, pressure ring 7 and diaphragm 8; Valve body 10 is sleeved on pressure ring 7; Diaphragm 8 is installed on the surface that pressure ring 7 contacts with valve body 10; Diaphragm 8 is provided with soft metal layer 1; One end of pressure ring 7 is by diaphragm 8 and valve body 10 laminatings; Soft metal layer 1 fits tightly with valve body 10; Valve body 10 comprises suction tude 18, valve inside valve 11, low-pressure cavity 12, piston 13, relief spring 14 and steam outlet pipe 15; Suction tude 18 is communicated with low-pressure cavity 12 through valve inside valve 11; Piston 13 is horizontally installed between low-pressure cavity 12 and steam outlet pipe 15, the inside of piston 13 is provided with the passage that runs through together its both ends of the surface, one end that piston 13 areas are larger contacts with the push rod 17 of valve inside valve 11, and one end that piston 13 areas are less is connected with relief spring 14; The surrounding of piston 13 is provided with valve seals 16.
The material of above-mentioned soft metal layer 1 is gold, silver or copper.
Described valve body 10 is provided with step 4, and step 4 is positioned at the outer rim place of soft metal layer 1; Pressure ring 7 is provided with convex shoulder 5, and convex shoulder 5 is suitable and complement each other to form annular housing 2 with step 4; In annular housing 2, be filled with sealing material.
The outer side wall of described pressure ring 7 is provided with seal groove 6, is provided with component sealing circle 3 in seal groove 6; In component sealing circle 3, be provided with stuffing box packing.Stuffing box packing is specially metal gasket.Metallic shim is specially copper sheet or aluminium flake.The material of seal ring 3 is rubber.
Described diaphragm 8 is fixedly connected with pressure ring 7 by electron beam welding 9.
The sealing configuration of above-mentioned black box You San road functional independence forms, first sealing configuration is soft metal layer 1, soft metal coating is plated in the upper-end surface outer rim of diaphragm 8, and assembling moment makes coating generation axial compression, in order to the leakage between sealed valve body 10 and diaphragm 8 upper-end surfaces; Second sealing configuration is metal gasket, and metal gasket is arranged on the axially upper of valve body 10 and pressure ring 7, utilizes ledge structure to compress, and first sealing configuration is played to redundancy effect; Three seal structures is nonmetal component sealing circle 3, and component sealing circle 3 is arranged on the axially upper of valve body 10 and diaphragm 8, utilizes the radial compression of component sealing circle 3 to play San road redundancy seal action.
Valve seals 16 in above-mentioned valve body 10 plays the effect of sealing gas, can avoid gas to be leaked to relief spring 14 opposite sides from low-pressure cavity 12, thereby avoid the motion of piston 13 to be obstructed, and finally plays the effect of stable output gas.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. with a reduction valve for black box, it is characterized in that, comprising: valve body (10), pressure ring (7) and diaphragm (8); Described valve body (10) is sleeved on described pressure ring (7); Described diaphragm (8) is installed on the surface that described pressure ring (7) contacts with described valve body (10); Described diaphragm (8) is provided with soft metal layer (1); One end of described pressure ring (7) is by described diaphragm (8) and described valve body (10) laminating; Described soft metal layer (1) fits tightly with described valve body (10); Described valve body (10) comprises suction tude (18), valve inside valve (11), low-pressure cavity (12), piston (13), relief spring (14) and steam outlet pipe (15); Described suction tude (18) is communicated with described low-pressure cavity (12) through described valve inside valve (11); Described piston (13) is horizontally installed between described low-pressure cavity (12) and described steam outlet pipe (15), the inside of described piston (13) is provided with the passage that runs through together its both ends of the surface, one end that described piston (13) area is larger contacts with the push rod (17) of described valve inside valve (11), and one end that described piston (13) area is less is connected with described relief spring (14); The surrounding of described piston (13) is provided with valve seals (16).
2. a kind of reduction valve with black box according to claim 1, is characterized in that, described valve body (10) is provided with step (4), and described step (4) is positioned at the outer rim place of described soft metal layer (1); Described pressure ring (7) is provided with convex shoulder (5), and described convex shoulder (5) and described step (4) are suitable and complement each other to form annular housing (2); Described annular housing is filled with sealing material in (2).
3. a kind of reduction valve with black box according to claim 1, is characterized in that, the outer side wall of described pressure ring (7) is provided with seal groove (6), is provided with component sealing circle (3) in described seal groove (6); In described component sealing circle (3), be provided with stuffing box packing.
4. a kind of reduction valve with black box according to claim 3, is characterized in that, described stuffing box packing is metal gasket.
5. a kind of reduction valve with black box according to claim 1, is characterized in that, described diaphragm (8) is fixedly connected with described pressure ring (7) by electron beam welding (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420075963.3U CN203730873U (en) | 2014-02-21 | 2014-02-21 | Pressure reducing valve with sealing component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420075963.3U CN203730873U (en) | 2014-02-21 | 2014-02-21 | Pressure reducing valve with sealing component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203730873U true CN203730873U (en) | 2014-07-23 |
Family
ID=51200948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420075963.3U Expired - Fee Related CN203730873U (en) | 2014-02-21 | 2014-02-21 | Pressure reducing valve with sealing component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203730873U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340432A (en) * | 2018-12-11 | 2019-02-15 | 中科艾尔(北京)科技有限公司 | A kind of high-purity gas pressure reducing valve sealed firmly |
-
2014
- 2014-02-21 CN CN201420075963.3U patent/CN203730873U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340432A (en) * | 2018-12-11 | 2019-02-15 | 中科艾尔(北京)科技有限公司 | A kind of high-purity gas pressure reducing valve sealed firmly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20160221 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |