CN101202178B - Determination method for locating piece position in pointer type SF6 gas density relay - Google Patents

Determination method for locating piece position in pointer type SF6 gas density relay Download PDF

Info

Publication number
CN101202178B
CN101202178B CN2006101194847A CN200610119484A CN101202178B CN 101202178 B CN101202178 B CN 101202178B CN 2006101194847 A CN2006101194847 A CN 2006101194847A CN 200610119484 A CN200610119484 A CN 200610119484A CN 101202178 B CN101202178 B CN 101202178B
Authority
CN
China
Prior art keywords
keeper
pointer
during
bourdon tube
density monitor
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.)
Active
Application number
CN2006101194847A
Other languages
Chinese (zh)
Other versions
CN101202178A (en
Inventor
苏丽芳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Roye Electric Co Ltd
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN2006101194847A priority Critical patent/CN101202178B/en
Publication of CN101202178A publication Critical patent/CN101202178A/en
Application granted granted Critical
Publication of CN101202178B publication Critical patent/CN101202178B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Measuring Fluid Pressure (AREA)

Abstract

The invention provides a method for determining the position of a positioning part in a pointer style SF6 gas density relay. The method determines the a fixed position of the positioning part according to a standard pressure operation value P20DEG when the rated shutting and/or an alarming junction of the density relay are(is) in 20 DEG C and a pressure value P[lowest temperature] when the P20DEG corresponds to the lowest work temperature T[lowest temperature] of the density relay. The fixed position ensures that when an actual pressure of the density relay drops to less than the P[lowest temperature], the positioning part starts to limit a bourdon tube to move downward. The inventive method correctly treats the fixed position of the positioning part, so that the density relay in a low temperature does not become invalid, thereby ensuring the reliable operation of the system; moreover in a high temperature, a compensation tab and a pointer of the relay do not deform and steadily work, thereby greatly improving the performance of the pointer style SF6 gas density relay.

Description

Pointer-type SF 6Method for determining locating piece position in the gas density relay
Technical field
The present invention relates to a kind of relay, relate in particular to a kind of pointer SF 6Method for determining locating piece position in the gas density relay.
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 such as Fig. 1, shown in Figure 2, it comprises SF 6 Gas connection 1, movement 2, housing 3, dial 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 is separately fixed on the movement 2 with dial 4.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 end seat 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 through 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 intrusion.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, this SF 6The fixed position existing problems of the keeper 11 in the gas density relay.For example, a kind of density monitor is arranged, the normal pressure operating value P during 20 ℃ of the locking contacts of its specified requirement 20 ℃Be 0.33Mpa (relative pressure, in full with), but the fixed position of the keeper in this relay drop at this relay actual pressure>=during 0.24Mpa, just begin spacing Bourdon tube and move down.So just possibly cause when temperature is lower than-35 ℃, the blocking function of this density monitor lost efficacy, even SF 6SF on the electric equipment 6The whole light leaks of gas can not send block signal yet.Because SF 6Gas is along with the reduction of temperature, and its force value also reduces accordingly, and when being lower than-35 ℃ in temperature, the corresponding actual pressure of pairing density value is for being lower than 0.24Mpa.The reflection force value that so Bourdon tube just can not be correct just makes the blocking function of this density monitor lose efficacy, and can not guarantee system's reliably working.The dial of this density monitor in addition, its starting point force value is 0.25Mpa, so the difference Δ P≤0.08Mpa of minimum movements locking contact pressure value and starting point force value on the dial of this density monitor.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 meticulous design is made in the fixed position of keeper, to guarantee system's reliably working.
Summary of the invention
The object of the invention is to solve the problems referred to above that prior art exists, and a kind of pointer SF is provided 6Method for determining locating piece position in the gas density relay is so that the relay that manufacturing is come out can guarantee system's reliably working.
The present invention is achieved in that a kind of pointer SF 6Method for determining locating piece position in the gas density relay, described pointer SF 6Gas density relay comprises housing and the pedestal, pointer, dial, movement, Bourdon tube, temperature-compensating sheet, crossbeam, connecting rod, one or more each self-corresponding adjusting rod and sensitive switch, end seat and the keeper that are arranged in the housing; 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; Be characterized in that described method for determining locating piece position is, the normal pressure operating value P during according to 20 ℃ of the locking of the specified requirement of density monitor and/or warning contacts 20 ℃, and this P 20 ℃Minimum operating temperature T corresponding to this density monitor Minimum temperaturePressure value P Minimum temperatureConfirm the fixed position of keeper, this fixed position can guarantee to drop to≤P when the density monitor actual pressure Lowest temperature DegreeThe time, keeper just begins spacing Bourdon tube and moves down.
Normal pressure operating value P when 20 ℃ of the locking of the specified requirement of described density monitor and/or warning contacts 20 ℃During for 0.33Mpa, the fixed position of described keeper can guarantee: when this density monitor actual pressure drop to≤during 0.225Mpa, keeper just begins spacing Bourdon tube and moves down.
Normal pressure operating value P when 20 ℃ of the locking of the specified requirement of described density monitor and/or warning contacts 20 ℃During for 0.32Mpa, the fixed position of described keeper can guarantee: when this density monitor actual pressure drop to≤during 0.22Mpa, keeper just begins spacing Bourdon tube and moves down.
Normal pressure operating value P when 20 ℃ of the locking of the specified requirement of described density monitor and/or warning contacts 20 ℃During for 0.31Mpa, the fixed position of described keeper can guarantee: when this density monitor actual pressure drop to≤during 0.215Mpa, keeper just begins spacing Bourdon tube and moves down.
Normal pressure operating value P when 20 ℃ of the locking of the specified requirement of described density monitor and/or warning contacts 20 ℃During for 0.30Mpa, the fixed position of described keeper can guarantee: when this density monitor actual pressure drop to≤during 0.21Mpa, keeper just begins spacing Bourdon tube and moves down.
Normal pressure operating value P when 20 ℃ of the locking of the specified requirement of described density monitor and/or warning contacts 20 ℃During for 0.34Mpa, the fixed position of described keeper can guarantee: when this density monitor actual pressure drop to≤during 0.24Mpa, keeper just begins spacing Bourdon tube and moves down.
Normal pressure operating value P when 20 ℃ of the locking of the specified requirement of described density monitor and/or warning contacts 20 ℃During for 0.35Mpa, the fixed position of described keeper can guarantee: when this density monitor actual pressure drop to≤during 0.25Mpa, keeper just begins spacing Bourdon tube and moves down.
Normal pressure operating value P during 20 ℃ of the locking contacts of the specified requirement of described density monitor 20 ℃During for 0.33Mpa, the fixed position of described keeper can guarantee: when this density monitor actual pressure drop to≤during 0.22Mpa, keeper just begins spacing Bourdon tube and moves down.
Described sensitive switch and adjusting rod corresponding with it are 1 pair, 2 pairs, 3 pairs or 4 pairs.
Motion arm length on described each sensitive switch is 21-50mm.
Normal pressure operating value P when 20 ℃ of the locking of the specified requirement of density monitor described in the present invention and/or warning contacts 20 ℃Refer to its minimum movements contact pressure value, promptly refer to the applied SF of this density monitor 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 ℃; In addition, the force value described in the present invention all is the relative pressure value, if represent with absolute pressure value, then wants the corresponding 0.1Mpa that adds, i.e. absolute pressure=relative pressure+0.1Mpa.
A kind of pointer SF of the present invention 6Method for determining locating piece position in the gas density relay makes like this and can not lose efficacy at low temperature environment lower density relay owing to made correct handling to the keeper fixed position, 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.
Description of drawings
Fig. 1 is a kind of pointer SF of prior art 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 involved in the present invention 6The primary structure sketch map of gas density relay;
Fig. 4 is the partial side view of structure shown in Figure 3;
Fig. 5 is pointer SF involved in the present invention 6The dial of gas density relay.
Embodiment
Referring to Fig. 3, cooperate referring to Fig. 4 pointer SF involved in the present invention 6Gas density relay is mainly by joint, movement 32, watchcase, dial, 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 through 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 is separately fixed on the movement 32 with dial.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 through 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 intrusion.One end of deferent is connected with pedestal 50, and positiver sealing; The other end of deferent is connected with joint, and positiver sealing.
Pointer SF involved in the present invention 6The characteristics of gas density relay are, the fixed position of keeper wherein is the normal pressure operating value P during according to 20 ℃ of the locking of the specified requirement of density monitor and/or warning contacts 20 ℃, and this P 20 ℃Minimum operating temperature T corresponding to this density monitor Minimum temperaturePressure value P Minimum temperatureConfirm that this fixed position can guarantee to drop to≤P when the density monitor actual pressure Minimum temperatureThe time, keeper just begins spacing Bourdon tube and moves down.For example, as pointer SF 6Normal pressure operating value P when 20 ℃ of the locking of the specified requirement of gas density relay and/or warning contacts 20 ℃During for 0.33Mpa, the fixed position of keeper can guarantee: when this density monitor actual pressure drop to≤during 0.22Mpa, keeper just begins spacing Bourdon tube and moves down.Both when this density monitor actual pressure during greater than 0.22Mpa, keeper can not move down by spacing Bourdon tube, and promptly Bourdon tube is can be free-moving, if load onto the dial of OK range this moment, the indicated indicating value of its pointer is correct.Because SF 6Though gas is along with the reduction of temperature, its force value also reduces accordingly, when being lower than-40 ℃ (minimum operating temperature) in temperature, and 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 during for 0.33Mpa.This value 0.23Mpa is higher than the spacing value 0.22Mpa of keeper to Bourdon tube, and so, Bourdon tube can also correctly reflect force value when low temperature, and the blocking function of this density monitor just can not lose efficacy, and can guarantee system's reliably working.The dial of this density monitor in addition, its starting point force value is 0.20Mpa, the pressure differential Δ P=0.13Mpa on this density monitor dial between minimum movements locking contact pressure value and the starting point force value >=0.12Mpa Δ P.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.
Pointer SF involved in the present invention 6The action principle of gas density relay 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, the variation of its density value have been arranged; 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.If leaked gas; Its density value drops to a certain degree (reach and report to the police or the locking value), and Bourdon tube 36 produces accordingly to bottom offset, through 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 keeping watch on and control electric switch 6Gas density makes the electric equipment trouble free service.If its density value has raise, force value also raises accordingly, is elevated to a certain degree; Bourdon tube 36 also produces accordingly to top offset, through 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 breaks off, and signal (reporting to the police or locking) is just removed.So just accomplish the function of density monitor.
The normal pressure operating value P of the present invention during according to 20 ℃ of the locking of specified requirement and/or warning contacts 20 ℃The SF of pairing density value 6Gas is at this density monitor minimum operating temperature value T Minimum temperatureThe time corresponding actual pressure value P Minimum temperatureConfirm the fixed position of keeper, this fixed position can guarantee: when the density monitor actual pressure drops to smaller or equal to P Minimum temperatureThe time, keeper just begins spacing Bourdon tube and moves down.Both worked as the density monitor actual pressure greater than P Minimum temperatureThe time, keeper can not move down by spacing Bourdon tube, and promptly Bourdon tube is can be free-moving, if load onto the dial of OK range this moment, the indicated indicating value of its pointer is correct.Pressure differential Δ P >=0.12Mpa between minimum movements contact pressure value and the starting point force value on its dial of this density monitor again.So, the present invention just makes and can not lose efficacy at low temperature environment lower density relay owing to made correct handling to the keeper fixed position, 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 explaining the present invention; And be not to be used as qualification of the present invention; As long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of the above embodiment.Also can be fixed on the top (being other direction) of adjusting rod like sensitive switch.

Claims (10)

1. pointer SF 6Method for determining locating piece position in the gas density relay, described pointer SF 6Gas density relay comprises housing and the pedestal, pointer, dial, movement, Bourdon tube, temperature-compensating sheet, crossbeam, connecting rod, adjusting rod, sensitive switch, end seat and the keeper that are arranged in the housing; Said adjusting rod and sensitive switch form one or more pairs of with form one to one; 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; The keeper 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: described method for determining locating piece position is, the normal pressure operating value P during according to 20 ℃ of the locking of the specified requirement of said density monitor and/or warning contacts 20 ℃, and this P 20 ℃Minimum operating temperature T corresponding to this density monitor Minimum temperaturePressure value P Minimum temperatureConfirm the fixed position of keeper, this fixed position can guarantee to drop to≤P when the density monitor actual pressure Minimum temperatureThe time, keeper just begins spacing Bourdon tube and moves down.
2. pointer SF according to claim 1 6Method for determining locating piece position in the gas density relay is characterized in that: the normal pressure operating value P when 20 ℃ of the locking of the specified requirement of described density monitor and/or warning contacts 20 ℃During for 0.33Mpa, the fixed position of described keeper can guarantee: when this density monitor actual pressure drop to≤during 0.225Mpa, keeper just begins spacing Bourdon tube and moves down.
3. pointer SF according to claim 1 6Method for determining locating piece position in the gas density relay is characterized in that: the normal pressure operating value P when 20 ℃ of the locking of the specified requirement of described density monitor and/or warning contacts 20 ℃During for 0.32Mpa, the fixed position of described keeper can guarantee: when this density monitor actual pressure drop to≤during 0.22Mpa, keeper just begins spacing Bourdon tube and moves down.
4. pointer SF according to claim 1 6Method for determining locating piece position in the gas density relay is characterized in that: the normal pressure operating value P when 20 ℃ of the locking of the specified requirement of described density monitor and/or warning contacts 20 ℃During for 0.31Mpa, the fixed position of described keeper can guarantee: when this density monitor actual pressure drop to≤during 0.215Mpa, keeper just begins spacing Bourdon tube and moves down.
5. pointer SF according to claim 1 6Method for determining locating piece position in the gas density relay is characterized in that: the normal pressure operating value P when 20 ℃ of the locking of the specified requirement of described density monitor and/or warning contacts 20 ℃During for 0.30Mpa, the fixed position of described keeper can guarantee: when this density monitor actual pressure drop to≤during 0.21Mpa, keeper just begins spacing Bourdon tube and moves down.
6. according to the said pointer SF of claim 1 6Method for determining locating piece position in the gas density relay is characterized in that: the normal pressure operating value P when 20 ℃ of the locking of the specified requirement of described density monitor and/or warning contacts 20 ℃During for 0.34Mpa, the fixed position of described keeper can guarantee: when this density monitor actual pressure drop to≤during 0.24Mpa, keeper just begins spacing Bourdon tube and moves down.
7. pointer SF according to claim 1 6Method for determining locating piece position in the gas density relay is characterized in that: the normal pressure operating value P when 20 ℃ of the locking of the specified requirement of described density monitor and/or warning contacts 20 ℃During for 0.35Mpa, the fixed position of described keeper can guarantee: when this density monitor actual pressure drop to≤during 0.25Mpa, keeper just begins spacing Bourdon tube and moves down.
8. pointer SF according to claim 1 6Method for determining locating piece position in the gas density relay is characterized in that: the normal pressure operating value P during 20 ℃ of the locking contacts of the specified requirement of described density monitor 20 ℃During for 0.33Mpa, the fixed position of described keeper can guarantee: when this density monitor actual pressure drop to≤during 0.22Mpa, keeper just begins spacing Bourdon tube and moves down.
9. pointer SF according to claim 1 6Method for determining locating piece position in the gas density relay is characterized in that: when sensitive switch and adjusting rod corresponding with it be many to the time, sensitive switch and adjusting rod corresponding with it are 2 pairs, 3 pairs or 4 pairs.
10. pointer SF according to claim 1 6Method for determining locating piece position in the gas density relay is characterized in that: when sensitive switch and adjusting rod corresponding with it be many to the time motion arm length on described each sensitive switch be 21-50mm.
CN2006101194847A 2006-12-12 2006-12-12 Determination method for locating piece position in pointer type SF6 gas density relay Active CN101202178B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2006101194847A CN101202178B (en) 2006-12-12 2006-12-12 Determination method for locating piece position in pointer type SF6 gas density relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2006101194847A CN101202178B (en) 2006-12-12 2006-12-12 Determination method for locating piece position in pointer type SF6 gas density relay

Publications (2)

Publication Number Publication Date
CN101202178A CN101202178A (en) 2008-06-18
CN101202178B true CN101202178B (en) 2012-04-18

Family

ID=39517257

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2006101194847A Active CN101202178B (en) 2006-12-12 2006-12-12 Determination method for locating piece position in pointer type SF6 gas density relay

Country Status (1)

Country Link
CN (1) CN101202178B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101615528A (en) * 2008-06-26 2009-12-30 上海乐研电气科技有限公司 Method for determining locating piece position in the gas density relay

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2519397Y (en) * 2001-12-30 2002-10-30 高新榜 Pointer type SF6 gas density relay
CN2650118Y (en) * 2003-07-09 2004-10-20 上海珂利电气有限公司 Pointer-type SF6 gas density relay

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2519397Y (en) * 2001-12-30 2002-10-30 高新榜 Pointer type SF6 gas density relay
CN2650118Y (en) * 2003-07-09 2004-10-20 上海珂利电气有限公司 Pointer-type SF6 gas density relay

Also Published As

Publication number Publication date
CN101202178A (en) 2008-06-18

Similar Documents

Publication Publication Date Title
CN101192484B (en) Vibration-resisting type pointer type SF6 gas density relay
CN102013357A (en) Sulfur hexafluoride gas density relay
CN204720384U (en) A kind of sulfur hexafluoride gas density relay with double compensation element
CN101882532A (en) SF6-gas density relay
CN200997360Y (en) Pointer SF6 air-density relay with standard dial
CN101202178B (en) Determination method for locating piece position in pointer type SF6 gas density relay
CN101231918A (en) Antivibration type SF6 gas density relay
CN201171013Y (en) Pointer type SF6 gas density relay with standard watch dial
CN201478199U (en) Sulphur hexafluoride gas density relay
CN201163596Y (en) SF6 gas density relay with standard positon locating piece
CN201570439U (en) Vibration resistance pointer type SF6 gas density relay
CN201662464U (en) Absolutely pressure-type sulfur hexafluoride gas density meter
CN101231919A (en) Method for deciding locating piece position in SF6 gas density relay
CN101038829B (en) Heightening operation arm anti-vibration pointer type SF6 gas density relay
CN201171014Y (en) Pointer type SF6 gas density relay with standard watch dial
CN101226851A (en) Method for determining locating piece position in gas density relay
CN200990339Y (en) Antivibrating pointer type SF6 gas density relay
CN101615528A (en) Method for determining locating piece position in the gas density relay
CN201274258Y (en) Synthetic position limiting vibration absorbing pointer type SF6 gas density relay
CN2870138Y (en) Shock-resistant pointer-type SF gas density relay
CN201163597Y (en) Shake-proof pointer type SF6 gas density relay
CN1996529B (en) Vibration-resisting pointer SF6 gas density relay
CN101038828B (en) Operating arm anti-vibration pointer type SF6 gas density relay
CN101615526A (en) The pressure limit system of selection that a kind of gas density relay and Bourdon tube thereof are made
CN101202177A (en) Bourdon tube modified pointer type SF6 gas density relay

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
C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20160817

Address after: Qingpu District of Shanghai city Shen brick road building 201700 new No. 221 Building 1 B zone 1 room 123

Patentee after: Shanghai Roye Electronic Science & Technology Co., Ltd.

Address before: 201110 room 76, No. 1508, Lane 601, Shanghai, Caobao Road

Patentee before: Su Lifang

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20161229

Address after: 201802 Shanghai City, Jiading District Nanxiang Town, Yun North Road 1755 Lane 21, B zone four

Patentee after: Shanghai joy Electric Co., Ltd.

Address before: Qingpu District of Shanghai city Shen brick road building 201700 new No. 221 Building 1 B zone 1 room 123

Patentee before: Shanghai Roye Electronic Science & Technology Co., Ltd.