CN100444298C - Pressure switch with anti-leakage self protective function - Google Patents
Pressure switch with anti-leakage self protective function Download PDFInfo
- Publication number
- CN100444298C CN100444298C CNB2006100634110A CN200610063411A CN100444298C CN 100444298 C CN100444298 C CN 100444298C CN B2006100634110 A CNB2006100634110 A CN B2006100634110A CN 200610063411 A CN200610063411 A CN 200610063411A CN 100444298 C CN100444298 C CN 100444298C
- Authority
- CN
- China
- Prior art keywords
- pressure
- sensitive
- switch
- diaphragm
- self
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
This invention relates to a pressure switch with leakage-proof automatic protection function including a shell with a pressure-sensing channel, a pressure-sensing membrane is set on the channel and is set in the shell internal cavity and fixedly connected with the shell, a transfer rod is set on it, and an elastic piece is mounted on the transfer rod forming a vacuum cavity with the transfer rod connecting to the micro-motion switch characterizing that a self-protection membrane in the shell is set between the transfer rod and the switch and contacts with the transfer rod or is pressed on the rod by a leakage-proof nut, the top of the pressure-sensing channel is set with a sealing port isolating the channel and the shell internal cavity by the membrane.
Description
[technical field]
The present invention relates to a kind of pressure switch, be specially a kind of pressure switch with leakproof automatic protection functions.
[background technology]
The pressure switch of prior art generally comprises a switch case, thoughts pressure passageway on the housing, pressure-sensitive passage top has in the fixedly connected pressure-sensitive diaphragm of housing, the pressure-sensitive diaphragm upper end holds or fixedly connected transmission bar, transmits on the bar spring is housed, and transmits bar one end and contacts button.During work, at first see through the pressure-sensitive passage and experience fluid to be measured pressure, when fluid pressure surpasses limit value, the power on the pressure-sensitive diaphragm of acting on is greater than the precompressed elastic force of spring, will make the pressure-sensitive diaphragm surrender, and pressure transmits successively then, head on the transmission bar and move upward, and contact button; When fluid pressure descends, under the effect of spring force, transmit bar and fall after rise, break away from button, thereby realize the function of pressure switch.General pressure-sensitive diaphragm is because the needs of its function, often the sidewall that joins with housing is thinner, the frictional force of sidewall and housing inner chamber makes very cracky of sidewall in the motion, result after this pressure-sensitive diaphragm breakage can cause liquid to enter inner chamber, the pressure of liquid can directly act on switch, make the pressure switch misoperation, this moment, leakage phenomenon also can take place in liquid, may cause some other safety problems.
[summary of the invention]
The present invention is intended to overcome the above-mentioned pressure switch pressure-sensitive diaphragm of prior art rapid wear and causes the leakage defect that takes place, and a kind of pressure switch with anti-leakage self protective function is provided.
For achieving the above object, technical scheme proposed by the invention is:
A kind of pressure switch with anti-leakage self protective function, comprise housing, one pressure-sensitive sense passage is arranged on the described housing, this pressure-sensitive passage upper end is provided with pressure-sensitive diaphragm, described pressure-sensitive diaphragm places the housing inner chamber, fixedly connected with housing, which is provided with the transmission bar, on this transmission bar elastic component is housed, described elastic component also places in the housing, itself and transmit and to form a cavity between the bar, transmit bar and be connected, it is characterized in that: between described transmission bar and the sensitive switch, also be provided with the self-insurance diaphragm with sensitive switch, this self-insurance diaphragm places in the housing, and touches mutually with the transmission bar;
Described pressure-sensitive passage upper end also is provided with and can leads to the seal that pressure-sensitive diaphragm makes itself and the isolation of housing inner chamber;
Can be provided with button on the described sensitive switch, its with transmit masthead portion self-insurance diaphragm and touch mutually or touch mutually by lever and self-insurance diaphragm.Described lever two-end-point touches with self-insurance diaphragm top and described button respectively, or two-end-point touches self-insurance diaphragm top and sensitive switch bottom by described button respectively;
Also be provided with a leakproof nut on the described transmission bar, it is threaded and pressing self-insurance diaphragm with the transmission bar, and the leakproof nut touches mutually with sensitive switch;
Described leakproof nut can touch with it mutually by set button on the sensitive switch;
Described leakproof nut can touch with sensitive switch mutually by lever, and two-end-point touches with leakproof nut top and described button respectively on its lever, or two-end-point touches leakproof nut top and sensitive switch bottom by described button respectively;
Described elastic component is a spring, and inverted spill spring fastener is housed on this spring, and described spring fastener is placed in and transmits on the bar, and the bottom is pressed on the pressure-sensitive diaphragm.
The invention provides a kind of pressure switch with anti-leakage self protective function, it is to install a self-insurance diaphragm additional and form a seal by pressure-sensitive diaphragm and housing on the transmission bar of existing pressure switch on the pressure-sensitive passage, when pressure-sensitive diaphragm that can be on pressure switch is damaged, even when inner chamber fills the liquid of elevated pressures into, also stop the leakage of liquid owing to the existence of self-insurance diaphragm; Simultaneously, because the liquid of elevated pressures fills into inner chamber, but jack-up self-insurance diaphragm touches mutually with sensitive switch, at this moment, pressure-sensitive diaphragm is return under the effect of spring force, makes inner chamber still form the cavity of a sealing, after the pressure of liquid descends, still also there are liquid and jack-up self-insurance diaphragm contact button in the inner chamber, finish self protective function, prevent the pressure switch misoperation.Perhaps, after the liquid of elevated pressures fills into inner chamber, pressure-sensitive diaphragm and transmission bar are together with leakproof nut return under the effect of spring force, make the leakproof nut break away from button, the inner chamber of this moment forms the high-pressure chamber of a sealing, no matter the outside liquid pressure lifting, the leakproof nut breaks away from button all the time, finish self protective function, prevent the pressure switch misoperation, provided the signal of maintenance simultaneously.The invention solves the long-standing safety problem of pressure switch, and cost is low, it is convenient to realize, has great use value.
[description of drawings]
Fig. 1 is the embodiment of the invention one structural representation;
Fig. 2 is the embodiment of the invention two structural representations;
Fig. 3 is the embodiment of the invention three structural representations;
Fig. 4 is the embodiment of the invention four structural representations;
Fig. 5 is the concrete structure figure of sensitive switch among the present invention.
Among the figure:
The 1-reaction diaphragm; 2-transmits pavilion; 3-spring fastener;
The 4-inner chamber; The 5-spring; 6-self-insurance diaphragm;
The 7-lever; 8-leakproof nut; The 9-button;
The 10-lever shaft; The 11-upper casing; The 12-lower casing;
The 13-seal; 14-pressure-sensitive passage; The 15-containing cavity;
The 16-sensitive switch;
16.1-switch housing machine; 16.2-press down shell fragment; 16.3-conduction transverse sheet;
16.4-shell fragment; 16.5-electric contact; 16.6-first terminals;
16.7-second terminals; 16.8 the 3rd terminals.
[embodiment]
The present invention is primarily aimed at the existing in prior technology defective and the improvement carried out.Below introduce characteristics of the present invention and advantage in detail by specific embodiments of the invention and accompanying drawing.
Embodiment one:
As shown in Figure 1, the present invention includes a housing, each critical piece all is arranged in the set cavity of this housing, described housing is divided into upper shell 11 and lower house 12 again, be convenient to the installation of each part, upper shell 11 is fixedlyed connected with lower house 12, both engage the back and form a containing cavity 15, wherein lower house 12 bottoms are provided with a pressure-sensitive passage 14, these pressure-sensitive passage 14 mouth positions offer seal 13, and seal 13 is positioned at containing cavity 15 bottoms, and it is an annular projection, can directly form by lower house 12 bottoms, or be fixed on lower house 12 bottoms as a part.In containing cavity 15 bottoms, putting has a pressure-sensitive diaphragm 1, offers annular groove on this pressure-sensitive diaphragm 1 baseplane, can correspondence be embedded on the above-mentioned shape projection, this structural design can make between pressure-sensitive diaphragm 1 and the seal 13 be connected tight, to guarantee its sealing property.In pressure-sensitive diaphragm 1 top periphery, be provided with a flange, the seam that this flange lower plane and containing cavity 15 bottoms are offered is fitted.1 top on sense sheet film, also contact or be fixedly connected with transmission bar 2, be set with elastic component on this transmission bar 2, the described elastic component of present embodiment is the sub-assembly of spring 5 and spring fastener 3, described spring 5 is placed in and transmits bar 2 upper ends, which is provided with a spring fastener 3, described spring fastener 3 is a middle porose inverted female member, be placed in and transmit on the bar 2, it is provided with inner chamber 4, touch mutually with spring 5 inner chamber 4 bottoms, and the anchor ring of spring fastener 3 lower ends is pressed on reaction diaphragm 1 lug upper surface, in order to fixing reaction diaphragm 1.On spring fastener 3, be provided with the self-insurance diaphragm 6 that can play the anti-leakage self protective effect, this self-insurance diaphragm 6 with transmit bar 2 outer surfaces on the plane touch mutually.Described self-insurance diaphragm 6 links to each other with sensitive switch 16, or as shown in Figure 1 with sensitive switch 16 on set button 9 join, button 9 uses as a contact, in order to the keying of control sensitive switch 16, it has sensitivity preferably.
As shown in Figure 5, described sensitive switch 16 is a unit independently, it controls opening or closing of other equipment or other electronic works, it comprises the switch case 16.1 that links to each other with upper shell 12, this housing inner chamber is provided with the electric contact 16.5 that presses down on shell fragment 16.2, conduction transverse slat 16.3, shell fragment 16.4 and the shell fragment, wherein pressing down shell fragment 16.2 is pressed on the conduction transverse slat 16.3, can utilize its elasticity, the contact point of assurance conduction transverse slat 16.3 one ends and button 9 closely touches and closes, shell fragment 16.4 joins with conduction transverse slat 16.3 other ends, equally, it is touched mutually closes with electric contact 16.5.Three first terminals 16.6, second terminals 16.7 and the 3rd terminals 16.8 that are arranged in parallel respectively also in switch case 16.1 inside are the tie point of other components and parts.
Present embodiment is applicable to high-voltage switch gear.
Embodiment two:
Present embodiment structure and embodiment one are basic identical, and different is that touching between self-insurance diaphragm 6 and the sensitive switch 16 closed by a lever 7 and realized.As shown in Figure 2, described lever 7 is positioned at upper casing 11, and fulcrum is positioned on the lever shaft 10 on the sensitive switch 16, and an end touches mutually with self-insurance diaphragm 6, touches mutually with button 9 when lever 7 rotates, and forms one by the interlock of lever 7 with transmission bar 2, sensitive switch 16.
Present embodiment also is applicable to high-voltage switch gear.
The course of work of embodiment one, two: in the time of the switch operate as normal, liquid enters pressure-sensitive passage 14, pressure is through pressure-sensitive diaphragm 1, transmission bar 2, self-insurance diaphragm 6 and button 9, touch button 9 after perhaps transmitting by lever 7, button 9 again by sensitive switch 16 with pressure signal transmission to three a different terminals---first terminals 16.6, second terminals 16.7 and the 3rd terminals 16.8, the function that makes pressure switch finish to open or close.When fluid pressure surpasses limit value, the power (pressure-sensitive diaphragm compression area * fluid pressure) on the pressure-sensitive diaphragm 1 of acting on will surrender pressure-sensitive diaphragm 1, transmission bar 2, spring 5 greater than the precompressed elastic force of spring 5, and self-insurance diaphragm 6 will move upward, and contact button 9.When fluid pressure descended, pressure-sensitive diaphragm 1, the counter motion under the effect of spring 5 restoring forces of transmission bar 2 broke away from button 9, thereby realize the function of pressure switch.But because the bottom of pressure-sensitive diaphragm 1 is thicker, sidewall is thinner, motoricity mainly acts on side again, thereby the frictional force of its sidewall and housing containing cavity 15 makes sidewall damaged easily, and after pressure-sensitive diaphragm 1 breakage, liquid will enter in switch containing cavity 15 and the inner chamber 4 by pressure-sensitive passage 14, owing to be provided with self-insurance diaphragm 6, further entering of liquid is prevented from; Simultaneously, because the liquid of elevated pressures fills into inner chamber 4, will a power that make progress be arranged to self-insurance diaphragm 6, jack-up self-insurance diaphragm 6 makes it contact with button 9, at this moment, pressure-sensitive diaphragm 1 is return under the effect of the restoring force of spring 5, makes inner chamber 4 form the cavity of a sealing, after the pressure of liquid descends, still there are liquid and jack-up self-insurance diaphragm 6 contact buttons 9 in the inner chamber 4, finish self protective function, prevent the pressure switch misoperation, provide maintenance signal simultaneously, realized purpose of the present invention.
Embodiment three:
As shown in Figure 3, present embodiment basic structure is identical with embodiment one, different is, its be on self-insurance diaphragm 6 and spring fastener 3, offer porose, transmit bar 2 and pass this hole, self-insurance diaphragm 6 is loaded on and transmits on the seam of offering on the bar 2, transmits bar 2 tops and is processed with screw thread, one leakproof nut 8 is housed on it, and this leakproof nut 8 is threaded and transmits bar 2 and pressing self-insurance diaphragm 6.
Present embodiment is applicable to low tension switch.
Embodiment four:
As shown in Figure 4, present embodiment structure and embodiment three are basic identical, and different is that touching between leakproof nut 8 and the sensitive switch 16 closed by a lever 7 and realized.As shown in the figure, described lever 7 is positioned at upper casing 11, and fulcrum is positioned on the lever shaft 10 on the sensitive switch 16, and an end touches mutually with leakproof nut 8, touches mutually with button 9 when lever 7 rotates, and forms one by the interlock of lever 7 with transmission bar 2, sensitive switch 16.
Present embodiment also is applicable to low tension switch.
The course of work of embodiment three, four: in the time of the switch operate as normal, liquid enters pressure-sensitive passage 14, pressure through pressure-sensitive diaphragm 1, transmit bar 2, self-insurance diaphragm 6, leakproof nut 8, button 9 or transmit by lever 7 after touch button 9, button 9 again by sensitive switch 16 with pressure signal transmission to three a different terminals---first terminals 16.6, second terminals 16.7 and the 3rd terminals 16.8, the function that makes pressure switch finish to open or close.When fluid pressure surpasses limit value, the power (pressure-sensitive diaphragm compression area * fluid pressure) on the pressure-sensitive diaphragm 1 of acting on is greater than the precompressed elastic force of spring 5, to surrender pressure-sensitive diaphragm 1, transmit bar 2, spring 5, self-insurance diaphragm 6, leakproof nut 8 will move upward, and contact button 9.When pressure-sensitive diaphragm 1 breakage, the liquid of elevated pressures enters inner chamber 4, because the existence of self-insurance diaphragm 6, liquid can't further leak, at this moment, and under the resilience force effect of spring 5, pressure-sensitive diaphragm 1 and transmission bar 2 and leakproof nut 8 move down return, make leakproof nut 8 break away from buttons 9.The high pressure liquid body cavity of a sealing of inner chamber 4 formation this moment, outside liquid pressure changes can't promote pressure-sensitive diaphragm 1 and transmission thick stick 2 and leakproof nut 8, leakproof nut 8 breaks away from all the time with button 9, finish self protective function, prevent the pressure switch misoperation, provide maintenance signal simultaneously, realized purpose of the present invention.
Should be noted that above-mentioned description at each specific embodiment is comparatively concrete and detailed, can not therefore be interpreted as the restriction to claim of the present invention, scope of patent protection of the present invention should be as the criterion with claims.
Claims (9)
1, a kind of pressure switch with anti-leakage self protective function, comprise housing, one pressure-sensitive passage is arranged on the described housing, this pressure-sensitive passage upper end is provided with pressure-sensitive diaphragm, described pressure-sensitive diaphragm places the housing inner chamber, fixedly connected with housing, described pressure-sensitive diaphragm is provided with the transmission bar, on this transmission bar elastic component is housed, and described elastic component also places in the housing, and and transmit and to form a cavity between the bar, transmit bar and be connected, it is characterized in that: between described transmission bar and sensitive switch, also be provided with the self-insurance diaphragm with sensitive switch, this self-insurance diaphragm places in the housing, and touches mutually with the transmission bar.
2, the pressure switch with anti-leakage self protective function according to claim 1 is characterized in that: described pressure-sensitive passage upper end is provided with the seal that can make itself and the isolation of housing inner chamber by pressure-sensitive diaphragm.
3, the pressure switch with anti-leakage self protective function according to claim 1 and 2 is characterized in that: also be provided with a leakproof nut on the described transmission bar, it is threaded and pressing self-insurance diaphragm with the transmission bar, and the leakproof nut touches mutually with sensitive switch.
4, the pressure switch with anti-leakage self protective function according to claim 1 and 2, it is characterized in that: described sensitive switch is provided with button, and it touches mutually or touches mutually by lever and self-insurance diaphragm with the self-insurance diaphragm that transmits masthead portion.
5, the pressure switch with anti-leakage self protective function according to claim 3 is characterized in that: described leakproof nut touches with it mutually by set button on the sensitive switch.
6, the pressure switch with anti-leakage self protective function according to claim 3 is characterized in that: described leakproof nut touches with sensitive switch mutually by lever.
7, the pressure switch with anti-leakage self protective function according to claim 4, it is characterized in that: described lever two-end-point touches with self-insurance diaphragm top and described button respectively, or two-end-point touches self-insurance diaphragm top and sensitive switch bottom by described button respectively.
8, the pressure switch with anti-leakage self protective function according to claim 6, it is characterized in that: two-end-point touches with leakproof nut top and described button respectively on the described lever, or two-end-point touches leakproof nut top and sensitive switch bottom by described button respectively.
9, the pressure switch with anti-leakage self protective function according to claim 1 and 2 is characterized in that: described bullet shape property part is a spring, and inverted spill spring fastener is housed on this spring, and described spring fastener is placed in and transmits on the bar, and the bottom is pressed on the pressure-sensitive diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100634110A CN100444298C (en) | 2006-10-31 | 2006-10-31 | Pressure switch with anti-leakage self protective function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100634110A CN100444298C (en) | 2006-10-31 | 2006-10-31 | Pressure switch with anti-leakage self protective function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1945772A CN1945772A (en) | 2007-04-11 |
| CN100444298C true CN100444298C (en) | 2008-12-17 |
Family
ID=38045105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100634110A Expired - Fee Related CN100444298C (en) | 2006-10-31 | 2006-10-31 | Pressure switch with anti-leakage self protective function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100444298C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102951302B (en) * | 2012-11-13 | 2015-06-10 | 北京空间飞行器总体设计部 | Touchdown signal device for soft landing of spacecraft |
| CN104696577B (en) * | 2013-12-10 | 2017-10-27 | 上海宇航系统工程研究所 | A kind of pressure signal device |
| CN106644242A (en) * | 2016-12-30 | 2017-05-10 | 西安航天动力研究所 | Diaphragm type pressure annunciator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2101936U (en) * | 1991-08-17 | 1992-04-15 | 许墨来 | Miniature pressure relay |
| US5670766A (en) * | 1995-09-19 | 1997-09-23 | Argus Machine Co. Ltd. | Pressure switch |
| JP2001266721A (en) * | 2000-03-21 | 2001-09-28 | Sanwa Denki Seisakusho:Kk | Pressure switch |
| CN200962399Y (en) * | 2006-10-31 | 2007-10-17 | 杨克庆 | Pressure switch with the leakage prevention and self-protection function |
-
2006
- 2006-10-31 CN CNB2006100634110A patent/CN100444298C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2101936U (en) * | 1991-08-17 | 1992-04-15 | 许墨来 | Miniature pressure relay |
| US5670766A (en) * | 1995-09-19 | 1997-09-23 | Argus Machine Co. Ltd. | Pressure switch |
| JP2001266721A (en) * | 2000-03-21 | 2001-09-28 | Sanwa Denki Seisakusho:Kk | Pressure switch |
| CN200962399Y (en) * | 2006-10-31 | 2007-10-17 | 杨克庆 | Pressure switch with the leakage prevention and self-protection function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1945772A (en) | 2007-04-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100444298C (en) | Pressure switch with anti-leakage self protective function | |
| CN107647777A (en) | Pressure means | |
| CN102494166B (en) | Overflowing protective valve | |
| US20130081725A1 (en) | Time delay valve | |
| CN201739559U (en) | Double gas source fuel gas control device capable of selecting gas outlet automatically | |
| CN200962399Y (en) | Pressure switch with the leakage prevention and self-protection function | |
| CN103470828A (en) | Diaphragm and diaphragm seal type safety valve using same | |
| CN201297416Y (en) | A multifunctional gas automatic closing valve | |
| KR101108077B1 (en) | pilot operated safety valve and operating method using the same | |
| CN201218345Y (en) | Self-closing valve for gas leakage, gas ultra-underpressure and hose drop-off of household pipe | |
| CN201038057Y (en) | Low-voltage switch with leak-proof self-protection function | |
| CN110513602A (en) | Pressure regulator is pressed in liquefied gas intelligence | |
| CN201126837Y (en) | Battery safety valve component and battery containing the same | |
| CN208400750U (en) | A kind of self-locking emergency button of waterproof | |
| CN203516871U (en) | Membrane and membrane sealing type safety valve using same | |
| CN206271594U (en) | Integral safety is switched | |
| CN208719422U (en) | The switch valve of compressor gas tank | |
| GB2509796A (en) | Water heater valve | |
| CN208077839U (en) | It is a kind of secondary to start and halt switch | |
| CN102084448B (en) | Twin pushbutton | |
| CN220152020U (en) | Sealing structure for three-way control valve | |
| CN201925589U (en) | Detector for fast valve closing device | |
| CN207514315U (en) | The safety valve of duplicate protection | |
| KR20050095284A (en) | Duplex float valve | |
| KR200356932Y1 (en) | Duplex float valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081217 Termination date: 20121031 |