CN200997360Y - Pointer SF6 air-density relay with standard dial - Google Patents
Pointer SF6 air-density relay with standard dial Download PDFInfo
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- CN200997360Y CN200997360Y CN 200620048791 CN200620048791U CN200997360Y CN 200997360 Y CN200997360 Y CN 200997360Y CN 200620048791 CN200620048791 CN 200620048791 CN 200620048791 U CN200620048791 U CN 200620048791U CN 200997360 Y CN200997360 Y CN 200997360Y
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- China
- Prior art keywords
- pointer
- dial plate
- pressure
- bourdon tube
- density relay
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Abstract
The utility model relates to a pointer SF <6>air density relay with the standard dial, which comprises a housing and a base, a pointer, a dial, a core, a Bourdon tube, a temperature compensating gauge, a crossbeam, a connection rod, one or a plurality of corresponding adjusting rods and a micro switch, a terminal base and a positioning components that arranged in the housing, wherein the terminal base is fixed on the end of the Bourdon tube and is connected with temperature compensating gauge; the positioning component is fixed in the housing, wherein the front end extends to the lower part of the terminal base where the Bourdon tube is connected with the temperature compensating gauge. The device is characterized in that the pressure difference between connection point pressure value of the smallest movement in the dial and the pressure value of the starting point is P is more than or equal to 0.11MPA and the scope of the rated operating pressure for the density relay is 0.31-0.45MPA that is the absolute pressure is 0.41-0.55MPA.
Description
Technical field
The utility model relates to a kind of relay, relates in particular to a kind of SF of being applied in
6The pointer SF6 gas density relay of the band standard dial plate on the electric equipment.
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 monitor of machinery, and this relay has the SF of working as
6Can report to the police when gas leakage takes place electric product and the function of locking, also have the performance of on-the-spot display density value.Because this relay generally adopts hairspring type electric contact, helps formula suction though added magnetic, the reliable closure of docking point is helpful, at SF
6When gas density was higher than set point, its movable contact was moving along with pointer, because the power of hairspring is very little, magnetic helps formula suction can not transfer too greatly, in order to improve its vibration resistance, generally all is filled with silicone oil, because on making, ubiquity leakage of oil problem.In case leakage of oil, the user has only and changes relay again, causes economic loss.
Also have a kind of contact to adopt the no oil type SF of sensitive switch in addition
6Gas density relay, a kind of contact of prior art adopts the no oil type SF of sensitive switch
6The structure of gas density relay as shown in Figure 1 and Figure 2, it comprises SF
6 Gas connection 1, movement 2, housing 3, dial plate 4, pointer 5, Bourdon tube 6, temperature-compensating sheet 7, terminal box 8, sensitive switch 91,92,93, printed circuit board 10, keeper 11, fixed head 12, electric wire 13, adjusting rod 141,142,143, connecting rod 15, crossbeam 16, watch crystal 17, cover circle 18, pedestal 19 and SF
6Air shooter 20.Wherein, SF
6 Gas connection 1, terminal box 8, watch crystal 17, cover circle 18 and pedestal 19 are separately fixed on the housing 3.Movement 2 is fixed on the pedestal 19, and pointer 5 and dial plate 4 are separately fixed on the movement 2.One end of Bourdon tube 6 is welded on the pedestal 19 and is communicated with it, and the other end is connected with an end of temperature-compensating sheet 7, and the other end of temperature-compensating sheet 7 is connected with crossbeam 16, and crossbeam 16 is connected with connecting rod 15 again, and connecting rod 15 is connected with movement 2.Be fixed with adjusting rod 141,142,143 on the crossbeam 16.Sensitive switch 91,92,93 is welded on respectively on the printed circuit board 10, and printed circuit board 10 is installed on the fixed head 12, and fixed head 12 is installed in again on the pedestal 19.Sensitive switch 91 is fixed on the below of adjusting rod 141, and sensitive switch 92 is fixed on the below of adjusting rod 142, and sensitive switch 93 is fixed on the below of adjusting rod 143.Be respectively equipped with motion arm 911,921,931 on each sensitive switch.Keeper 11 is fixed on the movement 2, and its front end extends to the below of the end that Bourdon tube 6 links to each other with temperature-compensating sheet 7, and its function is: work as SF
6When gas density dropped to certain value, spacing Bourdon tube 6 moved down, the protection sensitive switch, and then protection crossbeam 16 do not damaged by pressure and is out of shape, and makes whole system keep reliably working.The contact of sensitive switch by electric wire 13, is connected on the terminal box 8 from printed circuit board 10, and terminal box 8 is fixed on the watchcase 3.Watch crystal 17, cover circle 18 are separately fixed on the watchcase 3, can protect its internal mechanism to avoid mechanical damage and dirt, rainwater are invaded.SF
6One end of air shooter 20 is connected with pedestal 19, and positiver sealing, SF
6The other end of air shooter 20 is connected with joint 1, and positiver sealing.
Above-mentioned SF
6Though the sensitive switch that gas density relay adopted has certain advantage, because this SF
6Keeper 11 fixed positions are incorrect in the gas density relay, the normal pressure operating value P during at present for 20 ℃ of a kind of locking contacts of its specified requirement of density monitor
20 ℃Be 0.33Mpa (relative pressure, absolute pressure is 0.43Mpa) time, its fixing position of keeper on it can only guarantee: when this density monitor actual pressure drops to the (relative pressure smaller or equal to 0.24Mpa, absolute pressure is 0.34Mpa) time, keeper just begins spacing Bourdon tube and moves down.In the time of so just may causing this density monitor to be lower than-35 ℃ in temperature, the blocking function of this density monitor just lost efficacy, even the whole light leaks of SF6 gas promptly on the SF6 electric equipment, can not send block signal yet.Because SF6 gas is along with the reduction of temperature, its force value also reduces accordingly, when being lower than-35 ℃ in temperature, normal pressure operating value during 20 ℃ of the locking contacts of its specified requirement is a 0.33Mpa (relative pressure for P20 ℃, absolute pressure is 0.43Mpa) time pairing density value corresponding actual pressure for being lower than 0.24Mpa (relative pressure, absolute pressure are 0.34Mpa).So reflection force value that Bourdon tube just can not be correct just makes the blocking function of this density monitor just lose efficacy, and can not guarantee system's reliably working.The dial plate of this density monitor in addition, its starting point force value is a 0.25Mpa (relative pressure, absolute pressure is 0.35Mpa), the pressure differential Δ P≤0.08Mpa between minimum movements locking contact pressure value and the starting point force value on this its dial plate of novel density monitor so.Make under hot environment that so the compensating plate of relay and pointer can be out of shape, can not stably work, can not guarantee system's reliably working.Therefore be necessary to develop the good pointer SF of a kind of performance
6Gas density relay is to guarantee system's reliably working.
Summary of the invention
The purpose of this utility model is to solve the problems referred to above that prior art exists, and provides a kind of performance well with the pointer SF6 gas density relay of standard dial plate, 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 utility model is achieved in that a kind of pointer SF6 gas density relay with the standard dial plate, comprise housing and be arranged on housing interior pedestal, pointer, dial plate, movement, Bourdon tube, temperature-compensating sheet, crossbeam, connecting rod, one or more each self-corresponding adjusting rod and sensitive switch, end seat and keeper, end seat wherein is fixed on the end of Bourdon tube and links to each other with an end of temperature-compensating sheet, and keeper is fixed in the housing, its front end extends to the below of the end seat that Bourdon tube links to each other with the temperature-compensating sheet, and its function is: work as SF
6When gas density dropped to certain value, spacing Bourdon tube moved down, the protection sensitive switch, and then the protection crossbeam do not damaged by pressure and is out of shape, and also protects movement not take off tooth, makes whole system keep reliably working; Pressure differential Δ P 〉=0.11Mpa on pointer its dial plate of SF6 gas density relay of described band standard dial plate between minimum movements contact pressure value and the starting point force value; Its scope of the rated operating pressure of described this density monitor is 0.31～0.45Mpa (relative pressure), or 0.41～0.55Mpa (absolute pressure).
Motion arm length on its each sensitive switch of pointer SF6 gas density relay of described band standard dial plate is 21-50mm.
Described sensitive switch and adjusting rod corresponding with it are 1 pair, 2 pairs, 3 pairs or 4 pairs.
A kind of pointer SF6 gas density relay with the standard dial plate of the utility model makes like this and can not lose efficacy at low temperature environment lower density relay owing to done correct processing at keeper fixed position and dial plate, and the system of assurance reliably working; Can also make under hot environment that the compensating plate of relay and pointer can not be out of shape, can stably work that having improved greatly should pointer-type SF
6The performance of gas density relay.Simultaneously also because this SF
6The length that gas density relay is arranged on the motion arm on each sensitive switch can be designed as 21～50mm, and the impulse stroke of the motion arm of sensitive switch is big, and elements such as adjusting rod or compensating plate change slightly, just can muchly not influence the precision of density monitor.Simultaneously when debugging, also be easy to precision transfer very accurate, be easy to make high-precision density monitor.
Illustrate: minimum movements contact pressure value refers to the applied SF of this density monitor on pointer its dial plate of SF6 gas density relay of described band standard dial plate
6The desired action connection point force value of the actual minimum of electric equipment refers generally to block action value (when no locking requires, referring to the actuation of an alarm value), and the normal pressure value when referring to 20 ℃.
Description of drawings
Fig. 1 is prior art pointer-type SF
6The structural representation of gas density relay;
Fig. 2 is the partial side view of structure shown in Figure 1;
Fig. 3 is pointer SF shown in Figure 1
6The dial plate figure of gas density relay;
Fig. 4 is the pointer SF of the utility model band standard dial plate
6The primary structure schematic diagram of gas density relay;
Fig. 5 is the partial side view of structure shown in Figure 4;
Fig. 6 is the dial plate of the pointer SF6 gas density relay of the utility model band standard dial plate.
Embodiment
Referring to Fig. 5 and Fig. 6, the sensitive switch in this implementation example and the quantity of adjusting rod respectively are 3 referring to Fig. 4, cooperation, in addition its locking normal pressure value P
20 ℃Be 0.33Mpa (relative pressure), or during 0.43Mpa (absolute pressure).The pointer SF6 gas density relay of the utility model band standard dial plate is mainly by joint, movement 32, watchcase, dial plate, pointer 35, Bourdon tube 36, temperature-compensating sheet 37, terminal box, one to four corresponding separately sensitive switch and the adjusting rod that is provided with, present embodiment is three, sees sensitive switch 391,392,393 and adjusting rod 441,442,443, printed circuit board 40, keeper 41, fixed head 42, electric wire 43, connecting rod 45, crossbeam 46, watch crystal 47, cover circle 48, end seat 49, pedestal 50, backing plate 51 and deferent composition among the figure.Wherein, joint is fixed on the watchcase, and movement 32 is fixed on the pedestal 50, and pedestal 50, backing plate 51 fuse and be fixed on the watchcase.One end of Bourdon tube 36 is welded on the pedestal 50, and the other end is connected with an end of temperature-compensating sheet 37 by end seat 49, and the other end of temperature-compensating sheet 37 is connected with crossbeam 46.Be fixed with adjusting rod 441,442,443 on the crossbeam 46.Crossbeam 46 is connected with connecting rod 45 again, and connecting rod 45 is connected with movement 32 again.Sensitive switch 391,392,393 is welded on respectively on the printed circuit board 40, and printed circuit board 40 is fixed on the fixed head 42, and fixed head 42 is installed in again on the pedestal 50.Sensitive switch 391,392,393 correspondences in the present embodiment are arranged on the below of each adjusting rod, wherein, sensitive switch 391 is fixed on the below of adjusting rod 441, and sensitive switch 392 is fixed on the below of adjusting rod 442, and sensitive switch 393 is fixed on the below of adjusting rod 443.Present embodiment keeper 41 is fixed on the movement 32, and pointer 35 and dial plate are separately fixed on the movement 32.Be respectively equipped with motion arm 3911,3921,3931 on each sensitive switch.The contact of sensitive switch is connected on the terminal box from printed circuit board 40 by electric wire 43, and terminal box is fixed on the watchcase.Watch crystal, cover circle are separately fixed on the watchcase, can protect its internal mechanism to avoid mechanical damage and dirt, rainwater are invaded.One end of deferent is connected with pedestal 50, and positiver sealing; The other end of deferent is connected with joint, and positiver sealing.
Among Fig. 5, the normal pressure operating value P when 20 ℃ of the locking of its specified requirement of pointer SF6 gas density relay of described band standard dial plate and/or warning contacts
20 ℃Be 0.33Mpa (relative pressure), or during 0.43Mpa (absolute pressure), and its fixing position of described keeper can guarantee: when this density monitor actual pressure drops to smaller or equal to 0.22Mpa (relative pressure), or during 0.32Mpa (absolute pressure), keeper just begins spacing Bourdon tube and moves down.Both worked as this density monitor actual pressure greater than 0.22Mpa (relative pressure), or during 0.32Mpa (absolute pressure), described keeper is not play spacing Bourdon tube to move down effect, Bourdon tube is can be free-moving, if this moment, the indicated indicating value of its pointer was correct when loading onto the dial plate of OK range.Though because SF6 gas is along with the reduction of temperature, its force value also reduces accordingly, when being lower than-40 ℃ (minimum operating temperature) in temperature, the normal pressure operating value P during 20 ℃ of the locking contacts of its specified requirement
20 ℃The corresponding actual pressure of pairing density value is 0.23Mpa (relative pressure, absolute pressure are 0.33Mpa) during for 0.33Mpa (relative pressure, absolute pressure are 0.43Mpa).This is worth 0.23Mpa (relative pressure), or 0.33Mpa (absolute pressure) is higher than the spacing value 0.22Mpa (relative pressure) of keeper to Bourdon tube, or 0.32Mpa (absolute pressure), so Bourdon tube can also correctly reflect force value when low temperature, the blocking function of this density monitor just can not lose efficacy, and can guarantee system's reliably working.And as shown in Figure 6, the dial plate of this density monitor, its starting point force value is a 0.20Mpa (relative pressure, absolute pressure is 0.30Mpa), the pressure differential Δ P=0.13Mpa 〉=0.11Mpa/ Δ P between minimum movements locking contact pressure value and the starting point force value on this its dial plate of novel density monitor so.Make under hot environment that so the compensating plate of relay and pointer can not be out of shape, can guarantee that this relay stably works, also can guarantee system's reliably working.
The action principle of the pointer SF6 gas density relay of the utility model band standard dial plate is based on flexible member Bourdon tube 36, utilizes the pressure and temperature of 37 pairs of variations of temperature-compensating sheet to revise, the SF in the reaction airtight container
6The variation of gas density.Promptly at measured medium SF
6Under the pressure effect of gas, because the effect of temperature-compensating sheet 37 has been arranged, the variation of its density value, force value also changes accordingly, force the end of Bourdon tube 36 to produce corresponding strain-displacement,, pass to movement 32 by means of temperature-compensating sheet 37 and connecting rod 45, movement 32 passes to pointer 35 again, satisfies tested SF
6The gas density value indicates on dial plate.If leaked gas, its density value drops to a certain degree (reach and report to the police or the locking value), Bourdon tube 36 produces accordingly to bottom offset, by temperature-compensating sheet 37, make crossbeam 46 to bottom offset, adjusting rod 441,442,443 on the crossbeam 46 just promotes the contact of corresponding sensitive switch 391,392,393 and connects, and sends corresponding signal (reporting to the police or locking), reaches 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 36 also produces accordingly to top offset, by temperature-compensating sheet 37, makes crossbeam 46 to top offset, adjusting rod 441,442,443 on the crossbeam 46 is just to top offset, adjusting rod 441,442,443 is just away from sensitive switch 391,392,393, and its contact just disconnects, and signal (reporting to the police or locking) is just removed.So just finish the function of density monitor.
The most important thing is the pressure differential Δ P 〉=0.11Mpa on this its dial plate of novel density monitor between minimum movements contact pressure value and the starting point force value.So, the utility model is a kind ofly can could do correct processing at the keeper fixed position with the pointer SF6 gas density relay of standard dial plate, make like this and can not lose efficacy at low temperature environment lower density relay, and the system of assurance reliably working; Can also make under hot environment that the compensating plate of relay and pointer can not be out of shape, can stably work that having improved greatly should pointer-type SF
6The performance of gas density relay.Simultaneously also because this SF
6The length that gas density relay is arranged on the motion arm on each sensitive switch can be designed as 21～50mm, and the impulse stroke of the motion arm of sensitive switch is big, and elements such as adjusting rod or compensating plate change slightly, just can muchly not influence the precision of density monitor.Simultaneously when debugging, also be easy to precision transfer very accurate, be easy to make high-precision density monitor.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, and all will drop in claims scope of the present invention variation, the modification of the above embodiment.Also can be fixed on the top (both other directions) of adjusting rod as sensitive switch.
Claims (3)
1, a kind of pointer SF with the standard dial plate
6Gas density relay, it comprises housing and is arranged on the interior pedestal of housing, pointer, dial plate, movement, Bourdon tube, the temperature-compensating sheet, crossbeam, connecting rod, one or more each self-corresponding adjusting rod and sensitive switches, end seat and keeper, end seat wherein is fixed on the end of Bourdon tube and links to each other with an end of temperature-compensating sheet, and keeper is fixed in the housing, its front end extends to the below of the end seat that Bourdon tube links to each other with the temperature-compensating sheet, it is characterized in that: the pressure differential Δ P 〉=0.11Mpa on the described dial plate between minimum movements contact pressure value and the starting point force value; Again, its scope of the rated operating pressure of described this density monitor is 0.31～0.45Mpa, and promptly absolute pressure is 0.41～0.55Mpa.
2, the pointer SF of band standard dial plate as claimed in claim 1
6Gas density relay is characterized in that: the motion arm length on described each sensitive switch is 21-50mm.
3, the pointer SF of band standard dial plate as claimed in claim 1
6Gas density relay is characterized in that: described sensitive switch and adjusting rod corresponding with it are 1 pair, 2 pairs, 3 pairs or 4 pairs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620048791 CN200997360Y (en) | 2006-12-11 | 2006-12-11 | Pointer SF6 air-density relay with standard dial |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620048791 CN200997360Y (en) | 2006-12-11 | 2006-12-11 | Pointer SF6 air-density relay with standard dial |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200997360Y true CN200997360Y (en) | 2007-12-26 |
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ID=38995796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620048791 Expired - Fee Related CN200997360Y (en) | 2006-12-11 | 2006-12-11 | Pointer SF6 air-density relay with standard dial |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200997360Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101387891B (en) * | 2008-10-21 | 2013-01-30 | 上海卓电电气有限公司 | Vibration resistant pointer type SF6 gas density controller |
| CN105513891A (en) * | 2016-01-26 | 2016-04-20 | 上海乐研电气科技有限公司 | Sulfur hexafluoride gas density relay, shockproof method and shockproof device |
| CN109213214A (en) * | 2017-07-03 | 2019-01-15 | 国网安徽省电力公司电力科学研究院 | A kind of mixed gas density controller |
-
2006
- 2006-12-11 CN CN 200620048791 patent/CN200997360Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101387891B (en) * | 2008-10-21 | 2013-01-30 | 上海卓电电气有限公司 | Vibration resistant pointer type SF6 gas density controller |
| CN105513891A (en) * | 2016-01-26 | 2016-04-20 | 上海乐研电气科技有限公司 | Sulfur hexafluoride gas density relay, shockproof method and shockproof device |
| CN109213214A (en) * | 2017-07-03 | 2019-01-15 | 国网安徽省电力公司电力科学研究院 | A kind of mixed gas density controller |
| CN109213214B (en) * | 2017-07-03 | 2024-04-02 | 国网安徽省电力公司电力科学研究院 | Mixed gas density controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071226 Termination date: 20151211 |
|
| EXPY | Termination of patent right or utility model |