CN201004434Y - Gas density switch using gas compensation - Google Patents
Gas density switch using gas compensation Download PDFInfo
- Publication number
- CN201004434Y CN201004434Y CNU2007200665867U CN200720066586U CN201004434Y CN 201004434 Y CN201004434 Y CN 201004434Y CN U2007200665867 U CNU2007200665867 U CN U2007200665867U CN 200720066586 U CN200720066586 U CN 200720066586U CN 201004434 Y CN201004434 Y CN 201004434Y
- Authority
- CN
- China
- Prior art keywords
- gas
- switch
- sensitive switch
- fixed
- sealing
- 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
Abstract
The utility model discloses a gas density switch which utilizes the gas to compensate, which is characterized in that the utility model comprises a bourdon tube, a dolly bar, a sensitive switch, a first sealing element, a cover plate and a second sealing element, wherein, a casing is filled with a SF6 gas, one end of the bourdon tube is welded on a base and communicated with the base; an end seat is welded on the other end of the bourdon tube, the dolly bar is movably arranged on the end seat; the sensitive switch is fixed on a dead plate which is fixed on the base; and the sensitive switch is correspondingly arranged above or below the dolly bar; the junction leading-out wire of the sensitive switch is sealed; all conducting elements are hermetically fixed on an insulator through the first sealing element, the insulator is hermetically fixed on a flange through the second sealing element, the flange is hermetically fixed on the cover plate, and the cover plate is hermetically fixed on the casing. The gas density switch adopting the technique proposal has the advantages of more reliable sealing, exacter temperature compensation performance, higher precision and lower manufacturing cost.
Description
Technical field
The utility model relates to a kind of SF6 gas density switch (being density monitor), relates in particular to a kind of SF of being applied in
6Utilize SF on the electric equipment
6The SF6 gas density switch of gas compensation.
Background technology
SF
6Electric product has been widely used in power department, and industrial and mining enterprises have promoted the fast development of power industry.Guarantee SF
6The reliable and secure operation of electric product has become one of vital task of power department.SF
6The arc-extinguishing medium of electric product and dielectric are SF
6Gas can not leak gas, if leak gas, just can not guarantee SF
6The reliable and secure operation of electric product.So monitoring SF
6The SF of electric product
6Density value is very necessary.Be used for monitoring SF now
6Density generally adopts a kind of pointer density meter (containing relay) of machinery, has the SF of working as
6Can on-the-spot display density value when gas leakage takes place electric product, also have for density monitor and to report to the police and blocking function, and these density meters or relay all are to measure SF6 gas relative pressure basically.And seal with regard to the housing that needs density switch (containing density monitor) for some occasion (as the table of low-pressure, or high altitude localities), its performance just is not subjected to height above sea level, climatic influences like this, can be applied in each place.Though the hermetically sealed density switch of this measurement SF6 gas absolute pressure is arranged in the market, and the transducer of its gaging pressure adopts bellows, and contact adopts magnetic to help formula electric contact form, the housing seal effect is not very reliable; Because the displacement of bellows is little, precision also is difficult to carry out; Because adopt bellows as pressure sensor, manufacturing cost is also high.In sum, need a kind of SF of invention
6Gas density switch (containing the SF6 gas density relay): sealing is reliable, the temperature-compensating performance is accurate, the precision height, contact is reliable, and resistance to shock is good, is particularly suitable for the SF6 density switch of low-pressure, its housing seal performance is greatly enhanced, gas leak phenomenon can not can taking place, improve the quality of products greatly, lowers manufacturing cost and be very important.
Summary of the invention
The purpose of this utility model is to solve the problems referred to above that prior art exists, and a kind of SF of utilization is provided
6The SF6 gas density switch of gas compensation is used for control and monitors airtight container SF
6The density of gas is at SF
6The gas leakage situation that occurs in the electric equipment is in time sent alarm signal, and block signal is for ensureing that electric power safety plays effect.
The purpose of this utility model is achieved in that the gas density switch that utilizes the gas compensation, comprise housing, joint, fixed head, insulating part, electric-conductor, flange, pedestal, the end seat is formed, also comprise Bourdon tube, adjusting rod, sensitive switch, first seal, cover plate, second seal, wherein, above-mentioned housing is filled with SF6 gas, one end of above-mentioned Bourdon tube is welded on the pedestal and is communicated with it, above-mentioned end seat is welded on the other end of Bourdon tube, above-mentioned adjusting rod is installed on the end seat movably, above-mentioned sensitive switch is fixed on the fixed head, fixed head is fixed on the pedestal, and the sensitive switch correspondence is arranged on the below or the top of adjusting rod, the contact lead-out wire of above-mentioned sensitive switch seals, all electric-conductor passes through the first seal sealing and fixing on insulating part, insulating part again by the second seal sealing and fixing on flange, flange again sealing and fixing on the cover board, cover plate again sealing and fixing on housing.
Above-mentioned sensitive switch and adjusting rod corresponding with it can respectively have one, two, three, four or a plurality of.Said base is fixing on the cover board, and flange seal is fixed on the housing.
A kind of SF that utilizes of the utility model
6The SF6 gas density switch of gas compensation, seal more reliable, the temperature-compensating performance is more accurate, and precision is higher, and contact is more reliable, resistance to shock is better, manufacturing cost is lower, is particularly suitable for the SF6 density switch of low-pressure, is greatly enhanced for the housing seal performance, gas leak phenomenon can not can take place, and can improve the quality of products greatly simultaneously.
Description of drawings
Fig. 1 is the structural representation that the utility model utilizes the gas density switch of gas compensation;
Fig. 2 is the gas density switch core texture schematic diagram that the utility model utilizes the gas compensation;
Fig. 3 is the gas density switch core texture side diagrammatic sketch that the utility model utilizes the gas compensation;
Fig. 4 is the another example structure schematic diagram that the utility model utilizes the gas density switch of gas compensation.
Embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, the utility model utilizes SF
6The SF6 gas density switch (being density monitor) of gas compensation comprise housing 5 and be arranged on joint 1, Bourdon tube 2, fixed head 3, first seal 4, insulating part 6, cover plate 7, seal 8, electric-conductor 9, flange 10, pedestal 11, end seat 12, sensitive switch 13, electric wire 14, adjusting rod 15 in the housing 5, seal 16, compositions such as conduit 17, cable end 18, cable 19.Wherein, joint 1 is fixed on the pedestal 11, and pedestal 11 is fixed on again on the housing 5, and an end of Bourdon tube 2 is welded on the pedestal 11 and is communicated with it, and the other end is welded on the end seat 12.Be fixed with an adjusting rod 15 on the end seat 12.Sensitive switch 13 is fixed on the fixed head 3, and fixed head 3 is fixed on the pedestal 11, and sensitive switch 13 correspondences are arranged on the below of adjusting rod 15.The contact of sensitive switch, be connected to an end of electric-conductor 9 by electric wire 141, and electric wire 142 is connected the other end of electric-conductor 9 with cable 19, wherein electric-conductor 91 passes through first seal, 41 sealing and fixing on insulating part 6, electric-conductor 92 passes through first seal, 42 sealing and fixing on insulating part 6, on flange 10, flange 10 sealing and fixing are on cover plate 7 by seal 8 sealing and fixing for insulating part 6, and cover plate 7 sealing and fixing are on housing 5.Seal 16 sealing and fixing on cover plate 7, conduit 17 is welded on and seals on 16.Cable end 18 is fixed on the flange 10, and cable 19 is fixed on the cable end 18, can protect its internal wiring to avoid mechanical damage and dirt, rainwater is invaded.The effect of conduit 17: when the density switch make and debug complete good after, just utilize SF6 gas that conduit 17 fills normal pressure in housing, good conduit 17 positiver sealings immediately after substituting the bad for the good, the mode of generally taking to weld seals.
Referring to Fig. 4, can see: density switch of the present utility model, its pedestal 11 also can be fixed on the cover plate 7, and flange 10 sealing and fixing are on housing 5.
Action principle of the present utility model is based on flexible member Bourdon tube 2, utilizes the SF of the standard that is filled with in the housing
6Gas is revised the pressure and temperature that changes, reaction SF
6The variation of gas density.Promptly under same ambient temperature, the temperature in the SF6 electric equipment raises or reduces, and then the SF6 gas of the normal pressure in the housing raises too or reduces, and has just overcome Temperature Influence.Promptly at measured medium SF
6Under the pressure effect of gas, the variation of its density value, force value also changes accordingly, force the end of Bourdon tube 2 to produce corresponding strain-displacement, if electric equipment has leaked gas, Bourdon tube 2 outer gas density values descend, Bourdon tube 2 produces accordingly to bottom offset, make end seat 12 also to bottom offset, its density value drops to a certain degree (reaching and report to the police or the locking value) of the SF6 gas density value that is lower than the housing internal standard, and the adjusting rod 15 on the end seat 12 just promotes corresponding sensitive switch 13, and corresponding sensitive switch 13 contacts are just connected, send corresponding signal (reporting to the police or locking), reach the SF in the equipment such as supervision and control electric switch
6Gas density makes the electric equipment trouble free service.If its density value has raise, force value also raises accordingly, be elevated to a certain degree, Bourdon tube 2 also produces accordingly to top offset, makes end seat 12 to top offset, and the adjusting rod 15 on the end seat 12 is just to top offset, its density value is elevated to a certain degree (reaching and report to the police or the locking value) of the SF6 gas density value that is higher than the housing internal standard, just away from corresponding sensitive switch 13, its contact just disconnects, and signal (reporting to the police or locking) is just removed.Because under same ambient temperature, if SF
6Gas density value height, then its force value is also big; If SF
6The gas density value is low, and then its force value is also little.So just overcome the influence that temperature on density is measured.Work as SF
6The SF of electric equipment
6The gas density value be higher than the housing internal standard SF6 gas density value to a certain degree the time, SF then
6The SF of electric equipment
6The gas pressure value just SF6 gas pressure value than housing internal standard is big, and its contact just disconnects during promptly greater than set point, and signal (reporting to the police or locking) is just removed; And work as SF
6The SF of electric equipment
6The gas density value be lower than the housing internal standard SF6 gas density value to a certain degree the time, SF then
6The SF of electric equipment
6The gas pressure value just SF6 gas pressure value than housing internal standard is little, and its contact is just connected during promptly less than set point, just sends corresponding signal (reporting to the police or locking).
Because signal contact of the present utility model adopts the sensitive switch form, moreover the control of sensitive switch contact is all controlled by adjusting rod, and the control of adjusting rod is carried out by end seat 12 and Bourdon tube 2, density value has descended, Bourdon tube 2 just moves down, until the action of signal (reporting to the police or locking) contact, promptly the sensitive switch contact is connected.Density value descends more, and it is firm more that sensitive switch is just connected, and Bourdon tube is used on the sensitive switch with bigger masterpiece, and sensitive switch is under the good pressure and in the good connection, is not afraid of vibration.Because the displacement of Bourdon tube is bigger than bellows, just easily precision is done standard simultaneously, processing easily, debugging can reduce cost easily.Because contact adopts the sensitive switch form, contact rating is big, contacts just reliable simultaneously.
Because contact lead-out wire sealing of the present utility model has changed the original method with the glue sealing, because of sealing with glue, the time has been grown, variations in temperature, will produce the crack, will leak gas like this, make whole density switch failure.The sealing of its contact lead-out wire: all electric-conductors 9 by first seal, 4 sealing and fixing on insulating part 6, insulating part 6 again by seal 8 sealing and fixing on flange 10, flange 10 again sealing and fixing on cover plate 7, cover plate 7 again sealing and fixing on housing 5.So its sealing just seals without glue, but seals by seal, and its sealing property is just reliable.
In sum, the utility model is owing to adopted Bourdon tube as pressure sensor, and contact adopts sensitive switch, and contact lead-out wire sealing reliably adopts SF6 gas as temperature-compensating in the hermetic housing.Through handling like this, just have extraordinary performance, reach: A, sealing are more reliable; B, temperature-compensating performance are more accurate; D, precision are higher; E, contact are more reliable; F, resistance to shock are better; G, manufacturing cost are lower.The performance and the cost performance of this density switch (density monitor) have so just been improved greatly.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.
Claims (4)
1, a kind of gas density switch that utilizes the gas compensation, comprise housing, joint, fixed head, insulating part, electric-conductor, flange, pedestal, end seat composition, it is characterized in that, also comprise Bourdon tube, adjusting rod, sensitive switch, first seal, cover plate, second seal
Wherein,
Described housing is filled with SF6 gas;
One end of described Bourdon tube is welded on the pedestal and is communicated with it;
Described end seat is welded on the other end of Bourdon tube;
Described adjusting rod is installed on the end seat movably;
Described sensitive switch is fixed on the fixed head, and fixed head is fixed on the pedestal, and the sensitive switch correspondence is arranged on the below or the top of adjusting rod;
The contact lead-out wire of described sensitive switch seals, all electric-conductor passes through the first seal sealing and fixing on insulating part, insulating part again by the second seal sealing and fixing on flange, flange again sealing and fixing on the cover board, cover plate again sealing and fixing on housing.
2, the gas density switch that utilizes the gas compensation as claimed in claim 1 is characterized in that described sensitive switch and adjusting rod corresponding with it respectively have one.
3, the gas density switch that utilizes the gas compensation as claimed in claim 1 is characterized in that described sensitive switch respectively has two, three, four or a plurality of with the adjusting rod relative with it.
4, the gas density switch that utilizes the gas compensation as claimed in claim 1 is characterized in that, described pedestal is fixing on the cover board, and flange seal is fixed on the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200665867U CN201004434Y (en) | 2007-01-23 | 2007-01-23 | Gas density switch using gas compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200665867U CN201004434Y (en) | 2007-01-23 | 2007-01-23 | Gas density switch using gas compensation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201004434Y true CN201004434Y (en) | 2008-01-09 |
Family
ID=39039978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200665867U Expired - Fee Related CN201004434Y (en) | 2007-01-23 | 2007-01-23 | Gas density switch using gas compensation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201004434Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545555B (en) * | 2008-03-27 | 2011-04-27 | 浙江三花汽车控制系统有限公司 | Pressure control valve for controlling opening degree of valve core through utilization of sensing element and refrigeration system |
| CN113437573A (en) * | 2021-06-17 | 2021-09-24 | 北京宇航系统工程研究所 | Electric connector deep low temperature zero leakage sealing isolation structure |
| US11885827B2 (en) | 2020-03-11 | 2024-01-30 | Shanghai Roye Electric Co., Ltd. | High anti-vibration gas density monitor |
-
2007
- 2007-01-23 CN CNU2007200665867U patent/CN201004434Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545555B (en) * | 2008-03-27 | 2011-04-27 | 浙江三花汽车控制系统有限公司 | Pressure control valve for controlling opening degree of valve core through utilization of sensing element and refrigeration system |
| US11885827B2 (en) | 2020-03-11 | 2024-01-30 | Shanghai Roye Electric Co., Ltd. | High anti-vibration gas density monitor |
| CN113437573A (en) * | 2021-06-17 | 2021-09-24 | 北京宇航系统工程研究所 | Electric connector deep low temperature zero leakage sealing isolation structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109406067A (en) | Rubber seal rings for seal characteristic detection device under a kind of high pressure hydrogen | |
| CN102013357A (en) | Sulfur hexafluoride gas density relay | |
| CN104377077A (en) | High vibration resistance sulfur hexafluoride gas density relay | |
| CN101882532A (en) | SF6-gas density relay | |
| CN209117278U (en) | Rubber seal rings for seal characteristic detection device under a kind of high pressure hydrogen | |
| CN201004434Y (en) | Gas density switch using gas compensation | |
| CN104299844B (en) | A kind of wide range sulfur hexafluoride gas density relay | |
| CN210243062U (en) | Dual-redundancy differential pressure sensor | |
| CN103456561A (en) | High-precision sulfur hexafluoride gas density relay | |
| CN107968018A (en) | A kind of high antivibration gas density relay | |
| CN201662464U (en) | Absolutely pressure-type sulfur hexafluoride gas density meter | |
| CN103456560B (en) | A kind of high antivibration sulfur hexafluoride gas density relay | |
| CN204230153U (en) | A kind of high antivibration sulfur hexafluoride gas density relay | |
| CN201663776U (en) | Closed-type instrument filled with gas or liquid | |
| CN207947220U (en) | A kind of high antivibration gas density relay | |
| CN202735022U (en) | Novel SF6 pressure transducer | |
| CN1971795A (en) | Shakeproof type sulfur hexafluoride gas density relay | |
| CN201478199U (en) | Sulphur hexafluoride gas density relay | |
| CN101231918A (en) | Antivibration type SF6 gas density relay | |
| CN200997360Y (en) | Pointer SF6 air-density relay with standard dial | |
| CN104048793A (en) | Fiber grating hydraulic sensor | |
| CN204230154U (en) | A kind of wide range sulfur hexafluoride gas density relay | |
| CN201820703U (en) | Sealing structure of contact outgoing lines of gas density relay | |
| CN203178026U (en) | Fiber grating hydraulic sensor | |
| CN217358803U (en) | Ultrasonic heat meter upright column base meter |
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: 20080109 Termination date: 20160123 |
|
| EXPY | Termination of patent right or utility model |