CN203516871U - Membrane and membrane sealing type safety valve using same - Google Patents
Membrane and membrane sealing type safety valve using same Download PDFInfo
- Publication number
- CN203516871U CN203516871U CN201320514937.1U CN201320514937U CN203516871U CN 203516871 U CN203516871 U CN 203516871U CN 201320514937 U CN201320514937 U CN 201320514937U CN 203516871 U CN203516871 U CN 203516871U
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- diaphragm
- valve
- spring
- valve port
- membrane
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Abstract
The utility model discloses a membrane and a membrane sealing type safety valve using the same. A sealing protrusion in seal fit with the edge of a valve port to seal the valve port is integrally arranged on the abdomen portion of a base body of the membrane, wherein the sealing protrusion is arranged on one side face of the abdomen portion in a protruding mode, the sealing protrusion can control the valve port to be opened and closed to realize the purpose that the part to control the valve port to be opened and closed can be a part of the membrane during working, and as a result, the process, needed in the prior art, of transmission of actions and acting force between a valve element and the membrane is omitted, and the action sensitivity of the membrane is improved; furthermore, due to the fact that the sealing protrusion serving as a part of the membrane is reliably connected with the base body of the membrane all the time, compared with the prior art, the membrane sealing type safety valve has the advantages that the sealing protrusion can stably and reliably control the switching of the valve port, the corresponding valve element is omitted, and cost is saved.
Description
Technical field
The utility model relates to a kind of diaphragm and uses the diaphragm seal safety valve of this diaphragm.
Background technique
The leakage mode of valve is divided into interior seal leakage and external sealed to be revealed, and poisonous, inflammable at some, permeability strong, befouling environment, be with in radioactive flowing medium pipeline, the external sealed performance of valve seems particularly important.Safety valve is as the safety protection device of flowing medium pipe-line system, and in the course of the work, safety valve needs opening and closing that can be in good time, with to guaranteeing the stable of pressure in whole flowing medium pipe-line system.Especially under low pressure, higher to the requirement of the reaction sensitivity of safety valve.
Application number is that 03262856 Chinese patent discloses a kind of diaphragm type high-temperature high-pressure sterilizing chamber safety valve, this safety valve comprises with the valve body of valve pocket and the diaphragm of interior assembling thereof, spring, diaphragm by valve pocket be separated between the upper and lower every control chamber and active chamber, spring is assemblied in control chamber, and apply downward pressure power to the center portion of diaphragm, the downside chamber wall of active chamber is provided with the valve seat that the spool for being fixed by diaphragm center portion is sealed up, active chamber is divided into flow pass and the annular flow channel in valve seat periphery in valve seat by valve seat, wherein the corresponding diaphragm downside of flow pass area is far longer than the area of the corresponding spool of flow pass lower end surface, so that flowing medium is after entering active chamber, lifting surface area on diaphragm downside is larger, and make spool under diaphragm drives, to open flow pass.But in safety valve switching process, diaphragm need to draw spool and seal up or get out of the way valve port, thereby increased the weight and volume of valve port controlling component in whole safety valve (appropriate section that comprises spool and diaphragm), and while there is corrosion or loosening situation in the linkage structure between diaphragm and spool, the switch motion of safety valve is easy to be affected, so that the sensitivity of whole safety valve and operational safety reduction.Simultaneously because flow pass is when in closed condition, diaphragm is in free state, and be pressed on valve seat at the pressure power effect decline spool of spring, so in the process of opening at flow pass, the active force that flowing medium acts on diaphragm downside not only needs to overcome the downward pressure power of spring, and need to overcome diaphragm elasticity and open the shrink tension under backward, so that the shrink tension sum of the flowing medium pressure power that suffered pressure is spring in the opening process of fluid passage and diaphragm, and along with the aperture of fluid passage constantly increases, the suffered pressure of flowing medium also can increase gradually, thereby it is large to have caused safety valve to open required fluid medium pressure, the problem that Blowdown of a safety valve is large.
Model utility content
The purpose of this utility model is to provide a kind of sensitive diaphragm of sealing up reliably or getting out of the way valve port, and a kind of diaphragm sealing type safety valve that uses this diaphragm is also provided simultaneously.
In order to realize above object, the technological scheme of diaphragm of the present utility model is as follows:
A kind of diaphragm, the matrix that comprises sheet that can elastic expanding compression deformation, described matrix has for being fixed on edge section and the belly for arranging towards valve port in valve body, on described matrix, in abdominal region place, be wholely set that the edge being useful on valve port is sealed and matched and the seal convexity of sealing up valve port, described seal convexity is convexly equipped with on a side side of belly.
Described seal convexity is the projection of column or shell-like or spherical or taper.
In described matrix, be embedded with the reinforcement interlayer of strip or sheet.
Between the edge section of described matrix and belly, by court, deviate from a lateral buckling of seal convexity or crooked annular fold transition connects, described annular fold towards a side of sealed groove, be provided with the deformation space of indent.
On described matrix, in a side of seal convexity dorsad, be fixed with the inserts exposing from belly, the exposed portions serve of inserts is provided with the linkage structure for being connected with spring seat or spring.
The technological scheme of diaphragm sealing type safety valve of the present utility model is as follows:
A kind of diaphragm sealing type safety valve, in comprising, establish the valve body of valve pocket and the diaphragm of interior assembling thereof, described valve pocket is divided into active chamber spaced apart and control chamber by diaphragm, on a side chamber wall relative with diaphragm of described active chamber, offer for being communicated with the valve port of flow channel and flow pass, described diaphragm comprises the matrix of sheet that can elastic expanding compression deformation, described matrix has for being fixed on edge section and the belly for arranging towards valve port in valve body, on described matrix, in abdominal region place, be wholely set that the edge being useful on valve port is sealed and matched and the seal convexity of sealing up valve port, described seal convexity is convexly equipped with on a side side of belly.
Between the edge section of described matrix and belly, by court, deviate from a lateral buckling of seal convexity or crooked annular fold transition connects, described annular fold towards a side of sealed groove, be provided with the deformation space of indent.
On described matrix, in a side of seal convexity dorsad, be fixed with the inserts exposing from belly, the exposed portions serve of inserts is provided with the linkage structure for being connected with spring seat or spring.
In described control chamber, be equipped with for apply the spring towards the pressure power of valve port resiliently deformable to diaphragm, diaphragm has the close stance of sealing up described valve port and the open position of getting out of the way described valve port pressing of spring on stroke, under the pressure-acting at flowing medium while having when open position by the compressing of the pressure power of spring and towards valve port spring expanding projection, at close stance on the seal convexity of described diaphragm, overcome spring pressure power and dorsad valve port elastic shrinkage reply the flexible shutoff face of free state.
Between described spring and diaphragm, be folded with by spring compression the spring seat on diaphragm, the side towards diaphragm of spring seat convexes with the compression bulb that end is spherical crown shape, and described linkage structure is the falling sphere groove being opened in the exposed portions serve of inserts.
On the belly of the matrix of diaphragm of the present utility model, one convexes with seal convexity, the switch of the valve port that sealing projection can be controlled, so that in the course of the work, for controlling the part of valve port switch, it is a part for diaphragm self, thereby saved in prior art the process of action and force transmission between spool and diaphragm, improved the sensitivity of diaphragm action, and because link together reliably all the time as the seal convexity of a diaphragm part and the matrix of diaphragm, thereby compared with prior art, sealing projection can be at the switch of reliable and stable control valve port, and saved corresponding spool, provide cost savings.
Under pressure-acting at flowing medium while further, having when open position by the compressing of the pressure power of spring and towards valve port spring expanding projection, at close stance on the seal convexity of diaphragm, overcome spring pressure power and dorsad valve port elastic shrinkage reply the flexible shutoff face of free state.During the course, diaphragm is when close stance, seal convexity on diaphragm has to the trend that deviates from the direction motion of valve port because of spring expanding projection, be that diaphragm applies the active force reverse with pressure power to spring, the critical pressure of opening required flowing medium with suitable valve port equals the poor of the pressure power of spring and the active force of diaphragm, thereby reduced the pressure that valve port is opened required flowing medium, reduced safety valve Blowdown of a safety valve, improved the sensitivity of safety valve.
Accompanying drawing explanation
Fig. 1 is the structural representation of diaphragm sealing type safety valve in embodiment of the present utility model;
Fig. 2 is the structural representation of diaphragm in Fig. 1.
Embodiment
The embodiment of diaphragm sealing type safety valve of the present utility model: as depicted in figs. 1 and 2, this diaphragm sealing type safety valve comprises valve seat 2, valve pocket 5, valve gap 8, diaphragm 1, lower spring cup 11, spring 6, upper spring seat 7, adjusting bolt 9, locking nut 10.The top of valve seat 2 offers up big and down small step hole, and the large end of step hole is tapped hole section, the bottom coaxial threaded of valve pocket 5 is connected in this tapped hole section, valve gap 8 coaxial threaded are connected in the periphery at valve pocket 5 tops, with by valve seat 2, valve pocket 5 and valve gap 8 removable be fixed into upper downward-extension in establish the valve body of valve pocket.Diaphragm 1 is pressed abd fixed on by valve pocket 5 on the step surface of step hole of valve seat 2, and the edge section of diaphragm 1 is fixed on valve seat 2 by valve pocket 5, but the belly of diaphragm 1 is divided into top control chamber 12 and active chamber on the lower 13 towards valve port and by valve pocket.On the downside chamber wall of active chamber 13, offer valve port and the flow channel that is offset to valve port left side in center portion, and offer the flow pass being communicated with active chamber 13 by valve port in the wall of the downside chamber of active chamber 13, and on the edge of valve port, convex with the valve port convex edge of a ring shape.In control chamber 12, be equipped with successively from bottom to top lower spring cup 11, spring 6 and upper spring seat 7, on the upper-end surface of upper spring seat 7, offer the jack of upper end open, lower end closed, the bottom of adjusting bolt 9 is actively plugged in this jack, the top of adjusting bolt 9 is offered tapped hole and is screwed out from the top of valve gap 8, screws out in periphery partly and is installed with adjusting bolt 9 is locked to the locking nut 10 on valve gap 8; The upper/lower terminal difference elastic compression of spring 6 is on upper and lower spring seat 11; The top of lower spring cup 11 offers the upper end open packing into for spring 6 lower ends, the pilot hole of lower end closed, the cooperation of leading up and down of the outer circumferential face of the outer circumferential face of lower spring cup 11 and valve pocket 5, the bottom centre position place of lower spring cup 11 convexes with the compression bulb that end is spherical crown shape downwards, and this compression bulb top is pressed in the upper end of diaphragm 1.On the interlayer 15 that the aramid fiber buried underground in the matrix 14 that diaphragm 1 is made by rubber, matrix 14 is fabric and diaphragm 1, fixing inserts 16 forms, the belly of diaphragm 1 is provided with the seal convexity 17 that coordinates to seal up valve port with valve port convex edge, the downside of seal convexity 17 is shutoff face, it between seal convexity 17 and diaphragm 1 edge section, is a ring shape fold, this annular fold is towards upper process, so that seal convexity 17 is connected by this annular fold transition with diaphragm 1 edge section; The lower end of inserts 16 is buried underground and is fixed in diaphragm 1 by the annular convex shoulder being convexly equipped with in periphery, expose from the upper end of diaphragm 1 upper end of inserts 16, on the section of exposed portions serve, offer hemispheric falling sphere groove 18, the compression bulb on lower spring cup 11 is just actively plugged in this falling sphere groove 18.
In the lower end of valve pocket 5, be wholely set the dividing plate 4 in control chamber 12, the center portion of dividing plate 4 offers the pilot hole being guided through up and down for inserts 16, and on the lower end surface of dividing plate 4, offers the annular groove of distribution relative to annular fold.Between the lower end surface of the edge of seal ring and valve pocket 5, be folded with annular seal ring.
In the present embodiment, valve pocket is separated into upper and lower active chamber 13 and control chamber 12 spaced apart by diaphragm 1, and carry out enhanced leaktightness effect by seal ring, and effectively prevented that flowing medium from entering the problem of active chamber 13 corrosion springs 6 from active chamber 13, safety valve is used more reliable.On the downside of diaphragm 1, there is the stress surface being surrounded by the inner periphery at edge and the outer periphery of shutoff face, the area of stress surface is greater than the area of shutoff face, be that flowing medium acts on active force on the stress surface of diaphragm 1 and is greater than the active force on the shutoff face that flow pass inner fluid medium acts on diaphragm 1 after entering active chamber 13, effectively reduced flow pass inner fluid pressure medium and changed the impact on cracking pressure.Diaphragm 1 is when in free state, between diaphragm 1 and valve port convex edge, there is certain gap, so that diaphragm 1 is being pressed by spring 6 and valve port is being sealed, so that flowing medium is by after very little pressure-acting is on diaphragm 1, contractile force in the throttling part of the pressure of flowing medium and diaphragm 1 makes progress effect simultaneously and overcomes the downward pressure power of spring 6, guarantee that safety valve unlatching is sensitive, Blowdown of a safety valve is minimum.For realizing diaphragm 1, there is certain stroke, in diaphragm 1 travel position, design an annular fold, increase the effective travel of diaphragm 1.Diaphragm 1 sealing, in metal dampers sulfidization molding, makes diaphragm 1 have certain support, and the inserts 16 that spring 6 compresses metal by lower spring cup 11 is realized sealing, and does not directly act on the matrix 14 of diaphragm 1, effectively raises the working life of diaphragm 1.
In the above-described embodiments, lower spring cup coordinates by the inserts compressing on bulb and diaphragm, the pressure power being applied on diaphragm by lower spring cup with assurance spring is downward all the time, minimizing is because of the caused lower upper spring seat catching phenomenon of various piece unbalance stress of stress surface on diaphragm, in other embodiments, the lower end of spring also can immediate roof be pressed on the matrix upper side of diaphragm, the corresponding lower spring cup removed and corresponding inserts.
In the above-described embodiments, the area of the stress surface on diaphragm is greater than the area of shutoff face, impact diaphragm being opened and closed to reduce the pressure of flow pass inner fluid medium, and in other embodiments, the area of stress surface also can be equal to or less than the area of shutoff face.
In the above-described embodiments, the throttling of diaphragm is partly connected with diaphragm edge transition by annular fold, and in other embodiments, the throttling of diaphragm part also can be connected with diaphragm edge transition by annular plane lamellar body.
In the above-described embodiments, seal convexity is the projection of column, and in other embodiments, seal convexity can be also the projection of other shapes such as shell-like or spherical or taper.
The embodiment of diaphragm of the present utility model, the structure of this diaphragm is identical with the structure of diaphragm in above-described embodiment, therefore repeats no more.
Claims (10)
1. a diaphragm, the matrix that comprises sheet that can elastic expanding compression deformation, described matrix has for being fixed on edge section and the belly for arranging towards valve port in valve body, it is characterized in that, on described matrix, in abdominal region place, be wholely set that the edge being useful on valve port is sealed and matched and the seal convexity of sealing up valve port, described seal convexity is convexly equipped with on a side side of belly.
2. diaphragm according to claim 1, is characterized in that, described seal convexity is the projection of column or shell-like or spherical or taper.
3. diaphragm according to claim 1, is characterized in that, is embedded with the reinforcement interlayer of strip or sheet in described matrix.
4. according to the diaphragm described in claim 1 or 2 or 3, it is characterized in that, between the edge section of described matrix and belly, by court, deviate from a lateral buckling of seal convexity or crooked annular fold transition connects, described annular fold towards a side of sealed groove, be provided with the deformation space of indent.
5. according to the diaphragm described in claim 1 or 2 or 3, it is characterized in that, on described matrix, in a side of seal convexity dorsad, be fixed with the inserts exposing from belly, the exposed portions serve of inserts is provided with the linkage structure for being connected with spring seat or spring.
6. a diaphragm sealing type safety valve, in comprising, establish the valve body of valve pocket and the diaphragm of interior assembling thereof, described valve pocket is divided into active chamber spaced apart and control chamber by diaphragm, on a side chamber wall relative with diaphragm of described active chamber, offer for being communicated with the valve port of flow channel and flow pass, described diaphragm comprises the matrix of sheet that can elastic expanding compression deformation, described matrix has for being fixed on edge section and the belly for arranging towards valve port in valve body, it is characterized in that, on described matrix, in abdominal region place, be wholely set that the edge being useful on valve port is sealed and matched and the seal convexity of sealing up valve port, described seal convexity is convexly equipped with on a side side of belly.
7. diaphragm sealing type safety valve according to claim 6, it is characterized in that, between the edge section of described matrix and belly, by court, deviate from a lateral buckling of seal convexity or crooked annular fold transition connects, described annular fold towards a side of sealed groove, be provided with the deformation space of indent.
8. according to the diaphragm sealing type safety valve described in claim 6 or 7, it is characterized in that, on described matrix, in a side of seal convexity dorsad, be fixed with the inserts exposing from belly, the exposed portions serve of inserts is provided with the linkage structure for being connected with spring seat or spring.
9. diaphragm sealing type safety valve according to claim 8, it is characterized in that, in described control chamber, be equipped with for apply the spring towards the pressure power of valve port resiliently deformable to diaphragm, diaphragm has the close stance of sealing up described valve port and the open position of getting out of the way described valve port pressing of spring on stroke, on the seal convexity of described diaphragm, have when open position by the compressing of the pressure power of spring and towards valve port spring expanding projection, when close stance, under the pressure-acting of flowing medium, overcome spring pressure power and dorsad valve port elastic shrinkage reply the flexible shutoff face of free state.
10. diaphragm sealing type safety valve according to claim 9, it is characterized in that, between described spring and diaphragm, be folded with by spring compression the spring seat on diaphragm, a side towards diaphragm of spring seat convexes with the compression bulb that end is spherical crown shape, and described linkage structure is the falling sphere groove being opened in the exposed portions serve of inserts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320514937.1U CN203516871U (en) | 2013-08-22 | 2013-08-22 | Membrane and membrane sealing type safety valve using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320514937.1U CN203516871U (en) | 2013-08-22 | 2013-08-22 | Membrane and membrane sealing type safety valve using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516871U true CN203516871U (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320514937.1U Expired - Lifetime CN203516871U (en) | 2013-08-22 | 2013-08-22 | Membrane and membrane sealing type safety valve using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203516871U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470828A (en) * | 2013-08-22 | 2013-12-25 | 河南航天液压气动技术有限公司 | Diaphragm and diaphragm seal type safety valve using same |
| CN109282059A (en) * | 2017-07-20 | 2019-01-29 | 奥米加股份有限公司 | Safety valve for wrist-watch |
-
2013
- 2013-08-22 CN CN201320514937.1U patent/CN203516871U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470828A (en) * | 2013-08-22 | 2013-12-25 | 河南航天液压气动技术有限公司 | Diaphragm and diaphragm seal type safety valve using same |
| CN103470828B (en) * | 2013-08-22 | 2016-08-10 | 河南航天液压气动技术有限公司 | Diaphragm and use the diaphragm sealing type relief valve of this diaphragm |
| CN109282059A (en) * | 2017-07-20 | 2019-01-29 | 奥米加股份有限公司 | Safety valve for wrist-watch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |
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| CX01 | Expiry of patent term |