CN2340993Y - Safety valve - Google Patents
Safety valve Download PDFInfo
- Publication number
- CN2340993Y CN2340993Y CN 98221813 CN98221813U CN2340993Y CN 2340993 Y CN2340993 Y CN 2340993Y CN 98221813 CN98221813 CN 98221813 CN 98221813 U CN98221813 U CN 98221813U CN 2340993 Y CN2340993 Y CN 2340993Y
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- CN
- China
- Prior art keywords
- pressure
- valve
- push rod
- spool
- ring
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- 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.)
- Expired - Fee Related
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- Safety Valves (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
The utility model discloses a safety valve, provided with a three-way valve body, a bearing valve core pressed by a compression spring, a valve bottom seat blocked by the valve core, a drainage pipe opening communicated with the bottom seat and a secondary drainage pipe opening. The interior of the bottom seat is provided with a temperature-limit deep head type drainage ejecting rod, and the interior of the secondary drainage pipe opening is provided with a lock valve; the drainage ejecting rod is a temperature sensing hydraulic piston structure, and ejects and pushes the valve core to drain the temperature and the pressure within prescribed temperature range; the valve core is a bearing mechanism limited by the spring pressure, and the valve core is opened to drain the pressure within prescribed pressure range. The structure of the safety valve is that a sliding column mechanism is sealed through an elastic membrane sealing sheet; when the drainage pipe opening is accidentally blocked, the membrane sealing sheet can be opened in time to drain the pressure. The valve has reasonable structure, flexible action, long service life, and a dual-safety function.
Description
The utility model relates to the improvement of the safety guarantee facility of pressure-vessel, especially a kind of safety valve, and it belongs to the safety installations technical field of pressure-vessel.
Commercially available electric water heater generally all is provided with safety valve, and vapor pressure is too high in the hot water liner of making provision against emergencies, the accident of blasting.These safety valve general utility functions are single, and the safety valve of only pressure limiting is arranged.Safety valve only for temperature is arranged.This valve is to meet high temperature melting by fuse sheet to break and reach the pressure release purpose, and it can only disposablely use, and use unreliable, inconvenience.For water heater, run into the phenomenon that temperature is too high and vapour pressure is too high through regular meeting and take place, therefore need a kind of pressure that both limited, the safety valve of limit temperature again.Moreover general pressure-limiting safety valve all adopts the spring pressure limiting, for preventing the spring corrosion, often adopts the higher Stainless Steel Products of cost.General carbon steel spring is used for safety valve, certainly will cause working life short, fragile, and the drawback of malfunctioning accident easily takes place.
The purpose of this utility model is exactly the drawback that solves above-mentioned safety valve, and a kind of safety valve of novel combined type is provided.This valve arrangement is reasonable, have the dual fail-safe effect, but both pressure limitings can be limit temperature again, and is safe and reliable, is active in one's movements the characteristics that application area is big.
Task of the present utility model is that following technological scheme is finished, developed a kind of safety valve, it comprises: valve body, the pressure-bearing spool that compresses by pressure spring, compress the valve base of shutoff by this spool, in the straight-through main adapter cavity of this base, establish the finite temperature probe type and let out row's push rod, this push rod is when temperature-sensitive expands, but pushing tow is opened and is compressed shutoff this spool on this base mouth, constitute main take over and the valve base mouth be located at the Three way type valve body wall on let out the state that the comb mouth is connected, this let out the comb mouth be provided with secondary on the right Three way type valve body wall and let out the threaded end (TE) of arranging relief valve.
The described limit temperature of safety valve probe type is let out row's push rod, it aims at the pressure-bearing spool by main cantilever support supporting and the center of taking in the cavity, this push rod is the push rod of hydraulic piston structure, it is the push rod that the solid hydraulic pressure earthen pipe first half on this support of frame is equipped with the band Returnning spring, this push rod lower end connects intrinsic piston ring, this ring sealed sliding is engaged in this earthen pipe, load in the hydraulic pressure earthen pipe middle and lower part pipe below this ring and seal the paraffin wax type organic that temperature-sensitive expands up for safekeeping, this ring and connect solid push rod under this organic substance temperature-sensitive expands the pressure that produces, on in this earthen pipe, move down, thereby the pressure-bearing spool of pushing tow shutoff on the valve base mouth constitutes opening or closing of this spool.
Described limit temperature probe type is let out row's push rod, its hydraulic piston structure can also be: the "T"-shaped push rod that the band Returnning spring is housed in the solid hydraulic pressure earthen pipe first half on this support of frame, multiple-piece piston-ring is equipped with in the sealed sliding cooperation in this earthen pipe below this "T"-shaped push rod, this ring is by pallet, seal ring formed with inferior linking to each other of silicagel pad farming, load in this earthen pipe below the silicagel pad of this ring and seal the paraffin wax type organic that temperature-sensitive expands up for safekeeping, when this organic substance temperature-sensitive expands generation pressure, multiple-piece piston-ring in this earthen pipe is moved in the ejection, and then Returnning spring and this push rod of ejection of oppressing "T"-shaped push rod suit touch the pressure-bearing spool, thereby open spool; When this organic substance temperature-sensitive dwindles, push back this push rod downwards by the reposition force of Returnning spring and break away from the pressure-bearing spool, thereby close this spool.
Described pressure-bearing spool, it is compressed in the last core chamber that is installed in valve body by the nut that binds, and it also comprises: cap head pull bar, core print seat dish, shutoff pad, pressure spring and water proof cover and seal ring thereof; Wherein, the shutoff pad, connect solid cap head end at the bottom of the cover of core print seat dish and tubular water proof cover successively at cap head pull bar, this water proof cover enclosure seals movingly in last core chamber outside the pressure spring of this pull bar and suit thereof and by seal ring, go out to bind in the other end of this pull bar center of nut is outside the hole and be hinged on manually and lift on the handle.
Described secondary is let out row's relief valve, it comprises: the screw seat that has seal ring, traveller and elastic membrane mounting, wherein the screw seat is fixed in the threaded end (TE) of valve body by screw thread and seal ring, the valve seat outer wall of this hole seat is provided with the row's of letting out side opening, sliding fit is equipped with traveller in the center hole that binds of screw seat, and the other end of this post is fixed with the elastic membrane mounting, this sheet just in time shutoff on the base mouth of screw seat.
The advantage that safety valve of the present utility model has is: 1, rational in infrastructure, designed the Three way type valve body, the pressure-bearing spool of collection pressure limiting, the secondary that the temperature inductance probe formula of limit temperature is let out row's push rod and prevented to stop up the mouth of pipe is let out row's relief valve in one, but make the both pressure limitings of this valve, can limit temperature again, also have two-way safeguarding function.2 long service life have designed the pressure-bearing spool that has water proof cover, have protected pressure spring not to be subjected to corrosion, improve the reflection sensitivity and the service time of this spring, thereby have prolonged the working life of this valve.3, dual fail-safe can be reused after reporting to the police, letting out row pressure power or temperature again.Design the temperature inductance probe of hydraulic piston structure, utilized the expansive force of the paraffin wax type organic of temperature-sensitive expansion, promoted piston rod pushing tow pressure-bearing spool, reached the purpose of letting out row pressure power.When temperature and pressure reduced, this temperature-sensitive organic substance cooling was dwindled, because the effect of Returnning spring can make in the piston rod withdrawal hydraulic pressure earthen pipe, when raising in order to temperature, once more pressure-bearing spool pushing tow was opened again.Therefore reusable, improved working life.
Embodiment of the present utility model is described below in conjunction with the accompanying drawings:
Fig. 1 is the structure sectional view of safety valve.
Fig. 2 is the structure sectional view of another kind of safety valve.
The safety valve of making is used for the safety guarantee facility of electric water heater.Referring to Fig. 1, it comprises: valve body 11 by the pressure-bearing spool that pressure spring 3 compresses, is compressed the valve base 21 of shutoff by this spool.In main adapter 22 cavitys that this base 21 leads directly to, establish the finite temperature probe type and let out row's push rod 18, this push rod 18 is when temperature-sensitive expands, but pushing tow is opened and to be compressed shutoff this spool on 21 mouthfuls of this bases, constitute main take over 22 and 21 mouthfuls of valve bases be located at Three way type valve body 11 walls on let out the state that comb mouth 12 is connected, this let out comb mouth 12 be provided with secondary on right Three way type valve body 11 walls and let out the threaded end (TE) 23 of arranging relief valve.
The designed limit temperature probe type of safety valve is let out row's push rod 18, and it aims at the pressure-bearing spool by main cantilever support 17 supportings and the center of taking over 22 cavitys.This push rod 18 is the push rod of hydraulic piston structure, promptly in the solid hydraulic pressure earthen pipe 10 on this support 17 of frame the piston ring 19 that sealed sliding cooperates is housed.Load in this earthen pipe 10 middle and lower parts pipe and seal the paraffin wax type organic 20 that temperature-sensitive expands up for safekeeping.This piston ring 19 and connect solid this push rod 18 that has Returnning spring 25 under the pressure of this organic substance temperature-sensitive exapnsion moves up and down in this earthen pipe 10, thus the open and close of pushing tow pressure-bearing spool.
Referring to this piston structure of Fig. 2 can also be: the "T"-shaped push rod 18 that band Returnning spring 25 is housed in these earthen pipe 10 first halves.Multiple-piece piston- ring 26,27,28 is equipped with in the sealed sliding cooperation in this earthen pipe 10 below this "T"-shaped push rod 18.This ring is by pallet 26, and seal ring 27 and silicagel pad 28 are connected in turn.Load in this earthen pipe 10 below silicagel pad 28 and seal the paraffin wax type organic 20 that temperature-sensitive expands up for safekeeping.When this organic substance 20 temperature-sensitives＞99 ℃, produce liquefaction pressure, can pushing tow move on the multiple-piece piston- ring 26,27,28 in this earthen pipe 10, and then oppress the Returnning spring 25 of "T"-shaped push rod 18 suits, and this push rod 18 of ejection touches the pressure-bearing spool, thus open this spool.When these organic substance temperature-sensitive＜99 ℃ dwindle, push back this push rod 18 downwards by the reposition force of Returnning spring 25 and break away from the pressure-bearing spools, thereby close this spool.
The pressure-bearing spool that the safety valve is designed, it is compressed by the nut 24 that binds in the last core chamber that is installed in valve body 11, and also it comprises: cap head pull bar 2, core print seat dish 8, shutoff pad 9, pressure spring 3 and water proof cover 4 and seal ring 5 thereof.Wherein, shutoff pad 9, core print seat dish 8 and tubular waterproof connect solid cap head end at cap head pull bar 2 by nut 13 at the bottom of putting 4 cover successively.These water proof cover 4 enclosures and are sealed and matched in last core chamber by seal ring 5 outside the pressure spring 3 of this pull bar 2 and encapsulation thereof.The other end Shen of this pull bar 2 goes out to bind outside the center hole of nut 24, and is hinged on and manually lifts on the handle 1.
The designed secondary of safety valve is let out row's relief valve.It comprises: have the screw seat 14 of seal ring 15, traveller 7 and elastic membrane mounting 6.Wherein screw seat 14 is fixed in the threaded end (TE) 23 of valve body 11 by screw thread and seal ring 15.The valve seat outer wall of this hole seat 14 is provided with the row's of letting out side opening 16.Sliding fit is equipped with traveller 7 in the center hole that binds of this hole seat 14, and the other end of this post 7 is fixed with the film mounting 6 of elastic caoutchouc matter, this sheet 6 just in time shutoff on the base mouth of screw seat 14.When letting out comb mouth 12 unexpected obstructions, this film mounting 6 gets final product compressive deformation, drives traveller 7 displacements on this sheet 6, thereby pressure or water are discharged from the row's of letting out side opening 16, reaches the purpose of secondary insurance pressure release.
Use in the safety valve process normal, as be higher than the high pressure of authorized pressure (700Kpa), pressure spring 3 on the pressure-bearing spool promptly is compressed, and makes the shutoff pad 9 on 21 mouthfuls of the valve bases break away from 21 mouthfuls of these seats, and too high pressure can be got rid of by letting out comb mouth 12 from 21 mouthfuls of this bases.As when being higher than the high temperature of set point of temperature (99 ℃), be filled in the paraffin wax organic substance in the hydraulic pressure earthen pipe 10, meet heat fusing and promptly expand, but move on ejector ram ring 19 or multiple-piece piston- ring 26,27,28 and the push rod 18 thereof, get final product ejection pressure-bearing spool, can back down 21 mouthfuls of draining pressure releases of valve base equally.
Claims (5)
1, a kind of safety valve, it comprises: valve body, the pressure-bearing spool that compresses by pressure spring, compress the valve base of shutoff by this spool, it is characterized in that: in the straight-through main adapter cavity of this base, establish the finite temperature probe type and let out row's push rod, this push rod is when temperature-sensitive expands, but pushing tow is opened and is compressed shutoff this spool on this base mouth, constitute main take over and the valve base mouth be located at the Three way type valve body wall on let out the state that the comb mouth is connected, this let out the comb mouth be provided with secondary on the right Three way type valve body wall and let out the threaded end (TE) of arranging relief valve.
2, according to the described safety valve of claim 1, it is characterized in that: described limit temperature probe type is let out row's push rod, and it aims at the pressure-bearing spool by main cantilever support supporting and the center of taking in the cavity, this push rod is the push rod of hydraulic piston structure, it is the push rod that the solid hydraulic pressure earthen pipe first half on this support of frame is equipped with the band Returnning spring, this push rod lower end connects intrinsic piston ring, this ring sealed sliding is engaged in this earthen pipe, load in the hydraulic pressure earthen pipe middle and lower part pipe below this ring and seal the paraffin wax type organic that temperature-sensitive expands up for safekeeping, this ring and connect solid push rod under this organic substance temperature-sensitive expands the pressure that produces, on in this earthen pipe, move down, thereby the pressure-bearing spool of pushing tow shutoff on the valve base mouth constitutes opening or closing of this spool.
3, according to claim 1 a fast safety valve, it is characterized in that: described limit temperature probe type is let out its hydraulic piston structure of row's push rod and can also is: the "T"-shaped push rod that the band Returnning spring is housed in the solid hydraulic pressure earthen pipe first half on this support of frame, multiple-piece piston-ring is equipped with in the sealed sliding cooperation in this earthen pipe below this "T"-shaped push rod, this ring is by pallet, seal ring and silicagel pad are connected in turn, load in this earthen pipe below the silicagel pad of this ring and seal the paraffin wax type organic that temperature-sensitive expands up for safekeeping, when this organic substance temperature-sensitive expands generation pressure, multiple-piece piston-ring in this earthen pipe is moved in the ejection, and then Returnning spring and this push rod of ejection of oppressing "T"-shaped push rod suit touch the pressure-bearing spool, thereby open spool; When this organic substance temperature-sensitive dwindles, push back this push rod downwards by the reposition force of Returnning spring and break away from the pressure-bearing spool, thereby close this spool.
4, according to the described safety valve of claim 1, it is characterized in that: described pressure-bearing spool, it is compressed in the last core chamber that is installed in valve body by the nut that binds, and it also comprises: cap head pull bar, core print seat dish, shutoff pad, pressure spring and water proof cover and seal ring thereof; Shutoff pad wherein, connect solid cap head end at the bottom of the cover of core print seat dish and tubular water proof cover successively at cap head pull bar, movingly in last core chamber, the center hole that the other end of this pull bar stretches out the nut that binds outward and be hinged on manually and lift on the handle outside the pressure spring of this pull bar and suit thereof and by seal ring sealing for this water proof cover enclosure.
5, according to the described safety valve of claim 1, it is characterized in that: described secondary is let out row's relief valve.It comprises: the screw seat that has seal ring, traveller and elastic membrane mounting, wherein the screw seat is fixed in the threaded end (TE) of valve body by screw thread and seal ring, the valve seat outer wall of this hole seat is provided with the row's of letting out side opening, sliding fit is equipped with traveller in the center hole that binds of screw seat, the other end of this post is fixed with the elastic membrane mounting, and the good shutoff of this sheet is on the base mouth of screw seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98221813 CN2340993Y (en) | 1998-07-12 | 1998-07-12 | Safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98221813 CN2340993Y (en) | 1998-07-12 | 1998-07-12 | Safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2340993Y true CN2340993Y (en) | 1999-09-29 |
Family
ID=33973287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98221813 Expired - Fee Related CN2340993Y (en) | 1998-07-12 | 1998-07-12 | Safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2340993Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100395450C (en) * | 2002-11-07 | 2008-06-18 | 卢克汽车-液压系统两合公司 | Compressor |
| CN104455568A (en) * | 2014-10-30 | 2015-03-25 | 无锡市威海达机械制造有限公司 | Check valve capable of reducing starting pressure |
-
1998
- 1998-07-12 CN CN 98221813 patent/CN2340993Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100395450C (en) * | 2002-11-07 | 2008-06-18 | 卢克汽车-液压系统两合公司 | Compressor |
| CN104455568A (en) * | 2014-10-30 | 2015-03-25 | 无锡市威海达机械制造有限公司 | Check valve capable of reducing starting pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |