CN102543571A - Anti-vibration sulfur hexafluoride gas density relay - Google Patents
Anti-vibration sulfur hexafluoride gas density relay Download PDFInfo
- Publication number
- CN102543571A CN102543571A CN2012100322932A CN201210032293A CN102543571A CN 102543571 A CN102543571 A CN 102543571A CN 2012100322932 A CN2012100322932 A CN 2012100322932A CN 201210032293 A CN201210032293 A CN 201210032293A CN 102543571 A CN102543571 A CN 102543571A
- Authority
- CN
- China
- Prior art keywords
- control
- compensating element
- sulfur hexafluoride
- temperature compensating
- bourdon tube
- 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.)
- Granted
Links
Images
Abstract
The invention discloses an anti-vibration sulfur hexafluoride gas density relay, which comprises a shell and a signal control part arranged in the shell, wherein the signal control part comprises a control bourdon tube, a control temperature compensation element, a base, a control end seat, a plurality of signal generators, a signal conditioning mechanism and a first limiting mechanism, wherein one end of the control bourdon tube is connected to the base, and the other end of the control bourdon tube is connected with one end of the control temperature compensation element through the control end seat; the other end of the control temperature compensation element is connected with the signal conditioning mechanism; the signal generators are trigged by the signal conditioning mechanism to work; the first limiting mechanism limits the signal conditioning mechanism at a corresponding set position, of which a density value is greater than an alarm value, so that the signal conditioning mechanism cannot move along with the increase of the density value; and furthermore, when the density relay is impacted or vibrated, the signal conditioning mechanism cannot move or the amplitude of the displacement is reduced, so that a phenomenon that the signal conditioning mechanism mistakenly triggers the signal generators when the gas density is normal is avoided.
Description
Technical field
The present invention relates to a kind of gas density relay, relate in particular to a kind of Shakeproof type sulfur hexafluoride gas density relay that is applied on the sulfur hexafluoride electrical equipment.
Background technology
The sulphur hexafluoride electric product has been widely used in power department and industrial and mining enterprises, has promoted the fast development of power industry.The reliable and secure operation that guarantees the sulphur hexafluoride electric product has become one of vital task of power department.The arc-extinguishing medium of sulphur hexafluoride electric product and dielectric are sulfur hexafluoride gas, can not leak gas, if leak gas, just can not guarantee the reliable and secure operation of sulphur hexafluoride electric product.So the sulfur hexafluoride density value of monitoring sulphur hexafluoride electric product is very necessary.Being used for monitoring sulfur hexafluoride gas density at present generally adopts a kind of pointer sulfur hexafluoride gas density relay (see figure 1) of machinery to monitor sulfur hexafluoride gas density; Promptly this relay can be reported to the police and locking when gas leakage takes place the sulphur hexafluoride electric product, can also show on-the-spot density value simultaneously.This density monitor generally adopts dial 1, pointer 2, single Bourdon tube 3, single temperature compensating element 4, pedestal 5, movement 6 and hairspring type magnetic to help formula electric contact 7.When contact (reporting to the police or locking) was closed, its closing force only depended on the small power of contact hairspring, helps the power of formula even add magnetic; Also still very little; Therefore extremely be afraid of to shake, and the contact closure is also firm inadequately, and the most important thing is when receiving oxidation or polluting; The normal phenomenon that electric contact 7 loose contacts take place causes serious consequence.Ben in addition is that magnetic helps the breaking speed of formula electric contact 7 slower, and contact capacity is little, causes useful life short.So this density monitor just is difficult to guarantee electric property and life-span that in case go wrong, the user has only replacing again, causes economic loss, can not finely meet the demands.
Help the shortcoming of formula electric contact in view of above-mentioned hairspring type magnetic; Those skilled in the art have developed the no oil type sulfur hexafluoride gas density relay (see figure 2) that another kind of contact is a sensitive switch again, and it comprises dial 1, pointer 2, Bourdon tube 3, temperature compensating element 4, pedestal 5, the enlarger movement 6 that has demonstration, connecting rod 7, sensitive switch 101,102,103, regulating part 111,112,113, linking arm 12, contact motion arm 13, end seat 14, printed circuit board 18, location-plate 19, switch fixture 20 and lead-out wire 21; Wherein, movement 6 is installed in respectively on the pedestal 5 with switch fixture 20, and pointer 2 is separately fixed on the movement 6 with dial 1; One end of Bourdon tube 3 is welded on the pedestal 5; The other end is connected with an end of temperature compensating element 4 through end seat 14; The other end of temperature compensating element 4 is connected with linking arm 12, and an end of linking arm 12 is connected with an end of connecting rod 7, and the other end of connecting rod 7 is connected with movement 6; Contact motion arm 13 is the extension of linking arm 12, is fixed with regulating part 111,112,113 on the contact motion arm 13.Sensitive switch 101,102,103 is welded on respectively on the printed circuit board 18, and printed circuit board 18 is installed on the fixture 20; Sensitive switch 101 is fixed on the below of regulating part 111, and sensitive switch 102 is fixed on the below of regulating part 112, and sensitive switch 103 is fixed on the below of regulating part 113; Be respectively equipped with motion arm 1011,1021,1031 on each sensitive switch; The rear end of location-plate 19 is fixed on the movement 6, and front end extends to end seat 14 belows of the end that Bourdon tube 3 links to each other with temperature compensating element 4.The function of location-plate 19 is: when sulfur hexafluoride gas density dropped to certain value, restriction Bourdon tube 3 moved down, and with the protection sensitive switch, and then protection contact motion arm 12 do not damaged by pressure and be out of shape, and makes whole system keep reliably working.
Though the sensitive switch that above-mentioned sulfur hexafluoride gas density relay adopted has the advantage of good electric property; But because the displacement of the motion arm 1011,1021,1031 of sensitive switch is limited; Adopt single Bourdon tube 3 again, have following problem: 1) resistance to shock is relatively poor; 2) precision property is poor; 3) the range indication range is little.And, be difficult to guarantee system's reliably working.
In order to address the above problem; The applicant had had once researched and developed two kinds of sulfur hexafluoride gas density relays respectively and (had seen China invention novel patent CN200510110648.5 (as shown in Figure 3) and CN200910195174.7); Though these two kinds of sulfur hexafluoride gas density relays can solve more above-mentioned problems; But these sulfur hexafluoride gas density relays are owing to its structure is unreasonable; In use still have following problem: resistance to shock is bad, is easy to cause the output of misoperation signal, can not guarantee system's reliably working; The precision of relay is not high, can not guarantee system's reliably working.These sulfur hexafluoride gas density relays can not satisfy the reclosing requirement of sulphur hexafloride circuit breaker simultaneously.Be the blowing pressure (density) when alarm pressure value is following, can not bear 50g, the shock test of 11ms, this moment, misoperation can take place in the locking contact.For example: the density monitor of 0.6/0.52/0.5, when gas pressure (density) when dropping to actuation of an alarm point, carry out 50g this moment; The shock test of 11ms; And misoperation can take place in the locking contact, and switch has been carried out locking, can not satisfy the reclosing requirement of sulphur hexafloride circuit breaker.Be that charge density is when alarming value is following; During the operation sulphur hexafloride circuit breaker, misoperation can take place in the locking contact of density monitor, and sulphur hexafloride circuit breaker has been carried out locking; Can not satisfy the reclosing requirement of sulphur hexafloride circuit breaker, bring hidden danger for the safe operation of electrical network.
In sum, the contact of the good inadequately or contact of the electric property of current sulfur hexafluoride gas density relay is stable inadequately, working life is not long, or resistance to shock bad, be difficult to guarantee system's reliably working, or precision not high, be difficult to meet the demands.Be necessary to develop that a kind of resistance to shock is fine, precision is high, the sulfur hexafluoride gas density relay of good electric property, to guarantee system's reliably working
Summary of the invention
In order to solve the problems referred to above that prior art exists; The object of the present invention is to provide a kind of Shakeproof type sulfur hexafluoride gas density relay; It has that resistance to shock is good, precision is high, the advantage of good electric property, long working life, for positive role is played in the safe operation that ensures electric power.
The present invention is achieved in that a kind of Shakeproof type sulfur hexafluoride gas density relay; Comprise housing and be arranged on the signal controlling part in the housing; Said signal control part branch comprises that control wave steps on pipe, control temperature compensating element, pedestal, control end seat, some signal generators and Signal Regulation mechanism; One end of said control Bourdon tube is connected on the said pedestal; The other end of said control Bourdon tube links to each other with an end of said control temperature compensating element through said control end seat, and the other end of said control temperature compensating element is connected with said Signal Regulation mechanism, and said signal generator is by said Signal Regulation mechanism trigger action.Said density monitor comprises that also adjustable ground is installed in first position-limit mechanism in the said housing; This first position-limit mechanism is that set and greater than the correspondence position of the density value of alarming value one with said Signal Regulation mechanics limit; Make said Signal Regulation mechanism along with the increase of density value is no longer mobile; And when said density monitor is impacted or is vibrated; Said Signal Regulation mechanism is not subjected to displacement or reduces the amplitude that is subjected to displacement, avoid the said signal generator of said Signal Regulation mechanism false triggering when gas density is normal.
Above-mentioned Shakeproof type sulfur hexafluoride gas density relay; Wherein, Said density monitor also comprises being located in the said housing and with said signal control part and divides relatively independently indicating value display part; This indicating value display part comprises demonstration Bourdon tube, displays temperature compensating element,, display end seat, movement and pointer, and an end of said demonstration Bourdon tube is connected on the said pedestal, and the other end of said demonstration Bourdon tube links to each other with an end of said displays temperature compensating element, through said display end seat; The other end of said displays temperature compensating element, is through showing linking arm and show that connecting rod is connected with said movement that said pointer is installed on the said movement.
Above-mentioned Shakeproof type sulfur hexafluoride gas density relay, wherein, said first position-limit mechanism is located at the corresponding position of said Signal Regulation mechanism or is located at the corresponding position of the end that said control temperature compensating element is connected with said Signal Regulation mechanism.
Above-mentioned Shakeproof type sulfur hexafluoride gas density relay; Wherein, Said signal controlling part comprises that also the transmission mechanism that be connected or that be connected with said control temperature compensating element with said Signal Regulation mechanism, said first position-limit mechanism are located at the corresponding position of said transmission mechanism.
Above-mentioned Shakeproof type sulfur hexafluoride gas density relay, wherein, said transmission mechanism is gear drive, leverage or fan-shaped curved surface transmission mechanism.
Above-mentioned Shakeproof type sulfur hexafluoride gas density relay; Wherein, Said density monitor comprises that also adjustable ground is installed in second position-limit mechanism in the said housing; This second position-limit mechanism is located at the corresponding position of said control Bourdon tube or is located at the corresponding position of control end seat or is located at the correspondence position of the end that said control temperature compensating element is connected with said control end seat; And the displacement amplitude of said control Bourdon tube is limited in the force value of another setting or the correspondence position of density value, and make said control Bourdon tube no longer continue to move along with the increase of pressure or density, avoid said control temperature compensating element distortion.
Above-mentioned Shakeproof type sulfur hexafluoride gas density relay, wherein, said control temperature compensating element and said displays temperature compensating element, are the airtight Bourdon tube that is filled with gas.
Above-mentioned Shakeproof type sulfur hexafluoride gas density relay, wherein, said control temperature compensating element and said displays temperature compensating element, are bimetal leaf, and the width of said control temperature compensating element is 8～50mm.
Above-mentioned Shakeproof type sulfur hexafluoride gas density relay, wherein, said signal generator is that sensitive switch or magnetic help the formula electric contact.
Above-mentioned Shakeproof type sulfur hexafluoride gas density relay, wherein, said control Bourdon tube and said demonstration Bourdon tube are for being arranged side by side or orthogonal setting or nested setting.
The technical scheme of Shakeproof type sulfur hexafluoride gas density relay of the present invention; Two position-limit mechanisms have been increased; First position-limit mechanism one that set and greater than the correspondence position of the density value of alarming value, makes Signal Regulation mechanism along with the increase of density value is no longer mobile the Signal Regulation mechanics limit, and when density monitor is impacted or vibrate; Make Signal Regulation mechanism not vibrate or reduce the amplitude of generation vibration; Avoid Signal Regulation mechanism at the normal mistiming trigger signal generator of gas density, avoid signal generator generation misoperation (mistake locking or false alarm), thereby can improve the resistance to shock of density monitor greatly.In addition, when the gas density of sulphur hexafloride circuit breaker is between alarming value and locking value, the operation sulphur hexafloride circuit breaker, misoperation can not take place in the locking contact of density monitor, can satisfy the reclosing requirement of sulphur hexafloride circuit breaker.Second position-limit mechanism will be controlled Bourdon tube and be limited in the pressure of another setting or the correspondence position of density value; Make the control Bourdon tube no longer continue motion along with the increase of pressure or density value; To ensure that the control temperature compensating element can not be out of shape; Make the precision of density monitor unaffected, guarantee system's reliably working.
The technical scheme of Shakeproof type sulfur hexafluoride gas density relay of the present invention also independently is provided with control section and display part, makes display part and control section unaffected each other at work.The Bourdon tube of display part can receive any restriction, and the signal generator of control section, temperature compensating element can be limited in the scope of setting because of the Bourdon tube that needs protection correspondence, and display precision and indication range can not be restricted simultaneously.In addition, owing to adopted the two temperature compensating element,, needn't take into account the difference of display part and control section to the selection of temperature compensating element, so selection of components is more convenient, makes the temperature-compensating performance more accurate.Signal generator has been selected sensitive switch, can further improve the electric property and the life-span of density monitor, can be applied on the sulfur hexafluoride electrical equipment well.
Description of drawings
Fig. 1 is the structural representation of the pointer sulfur hexafluoride gas density relay of first kind of prior art;
Fig. 2 is the structural representation of the pointer sulfur hexafluoride gas density relay of second kind of prior art;
Fig. 3 is the structural representation of the pointer sulfur hexafluoride gas density relay of the third prior art;
Fig. 4 is first kind of structural representation of Shakeproof type sulfur hexafluoride gas density relay of the present invention;
Fig. 5 is second kind of structural representation of Shakeproof type sulfur hexafluoride gas density relay of the present invention;
Fig. 6 is the third structural representation of Shakeproof type sulfur hexafluoride gas density relay of the present invention;
Fig. 7 is the 4th a kind of structural representation of Shakeproof type sulfur hexafluoride gas density relay of the present invention;
Fig. 8 is the 5th a kind of structural representation of Shakeproof type sulfur hexafluoride gas density relay of the present invention;
Fig. 9 is the 6th a kind of structural representation of Shakeproof type sulfur hexafluoride gas density relay of the present invention;
Figure 10 is the 7th a kind of structural representation of Shakeproof type sulfur hexafluoride gas density relay of the present invention;
Figure 11 is the 8th a kind of structural representation of Shakeproof type sulfur hexafluoride gas density relay of the present invention;
Figure 12 is the 9th a kind of structural representation of Shakeproof type sulfur hexafluoride gas density relay of the present invention;
Figure 13 is the tenth a kind of structural representation of Shakeproof type sulfur hexafluoride gas density relay of the present invention;
Figure 14 is the 11 a kind of structural representation of Shakeproof type sulfur hexafluoride gas density relay of the present invention;
Embodiment
In order to understand technical scheme of the present invention better, below through concrete embodiment and combine accompanying drawing that the present invention is at length explained:
See also Fig. 4; First kind of Shakeproof type sulfur hexafluoride gas density relay of the present invention; There is not the display part; The signal controlling part is only arranged; So claim the sulfur hexafluoride gas density switch again, this density monitor comprises housing, joint, junction block, lead-out wire 21, control Bourdon tube 3A, control temperature compensating element 4A (present embodiment employing bimetal leaf), pedestal 5, signal generator, Signal Regulation mechanism 11, control end seat 14A, switch fixture 20, reinforcing mechanisms 23, first position-limit mechanism 22 and second position-limit mechanism 24.Pedestal 5 is fixed on the inwall of housing.For fear of or reduce control temperature compensating element 4A and receive the bounce effect of signal generator and be out of shape, make the precision of density monitor unaffected, guarantee system's reliably working, the width of control temperature compensating element 4A is designed to 15～40mm.Present embodiment with three sensitive switches 101,102,103 as the gas density relay signal generator.Reinforcing mechanisms 23 is fixed in the housing and to the shell of sensitive switch and reinforces, to improve the resistance to shock of sensitive switch.Joint is fixed on the housing; The head end of control Bourdon tube 3A is welded on the pedestal 5 and with joint and is communicated with, and the end of control Bourdon tube 3A is welded on the control end seat 14A.Control end seat 14A is connected with the head end of control temperature compensating element 4A, and the end of control temperature compensating element 4A is connected with Signal Regulation mechanism 11, is fixed with regulating part 111,112,113 in the Signal Regulation mechanism 11.Sensitive switch 101,102,103 be fixed on the pedestal 5 through switch fixture 20 and with each regulating part 111,112,113 corresponding setting; The above and below that each sensitive switch 101,102,103 of present embodiment and pedestal 5 lay respectively at Signal Regulation mechanism 11; Contact motion arm 1011,1021,1031 on each sensitive switch can contact with corresponding regulating part 111,112,113, and alarm contact on the sensitive switch and block signal contact are through lead-out wire 21 outputs.
Control Bourdon tube 3A is flexible member and utilizes control temperature compensating element 4A the pressure and temperature that changes to be revised the variation of reaction sulfur hexafluoride gas density.Promptly under the pressure effect of tested sulfur hexafluoride gas; Because the effect of control temperature compensating element 4A has been arranged; When the gas density value increases, during also corresponding increases of gas pressure value, the displacement that forces the not end of control Bourdon tube 3A to produce corresponding strain and take place to make progress.If leaked gas and the gas density value drop to a certain degree (reach report to the police or locking value); The not end of control Bourdon tube 3A produces accordingly to bottom offset; Through control temperature compensating element 4A, make Signal Regulation mechanism 11 to bottom offset, three regulating parts 111,112,113 in the Signal Regulation mechanism 11 just drive the contact motion arm 1011,1021,1031 of corresponding sensitive switch 101,102,103; Corresponding sensitive switch 101,102,103 contacts are connected; Send corresponding signal (reporting to the police or locking), reach the sulfur hexafluoride gas density in the equipment such as keeping watch on and control electric switch, make the electric equipment trouble free service.If the gas density value has raise; Force value also raises accordingly; Be elevated to a certain degree, the not end of control Bourdon tube 3A produces accordingly to top offset, through control temperature compensating element 4A; Make Signal Regulation mechanism 11 also to top offset, three regulating parts 111,112,113 in the Signal Regulation mechanism 11 are just to top offset.When arriving to a certain degree; Three regulating parts 111,112,113 in the Signal Regulation mechanism 11 just do not trigger corresponding sensitive switch 101,102,103; Corresponding sensitive switch 101,102,103 contacts just break off, and signal (reporting to the police or locking) is just removed, and so just accomplishes the function of density monitor.
First position-limit mechanism 22 is made up of a L-square and an adjustment screw; Screw is passed through on pedestal 5 in the riser bottom of L-square; And the transverse slat that makes L-square is positioned at the top of governor motion, and adjustment screw 221 is revolved on the transverse slat that is inserted in L-square and is resisted against on the governor motion 11.Through regulate adjustment screw 221 can a setting and greater than the correspondence position restricting signal governor motion 11 of the density value of alarming value; Make Signal Regulation mechanism 11 along with the increase of density value is no longer mobile; And when density monitor is impacted or vibrate; Make Signal Regulation mechanism 11 not vibrate or reduce the amplitude of generation vibration; Avoid Signal Regulation mechanism 11 at the normal mistiming trigger signal generator of gas density, avoid signal generator generation misoperation (mistake locking or false alarm) to guarantee system's reliably working.
Second position-limit mechanism 24 is fixed in the housing, and present embodiment is fixed on the pedestal 5, and this second position-limit mechanism is a baffle plate.This second position-limit mechanism 24 is located at the corresponding position of control Bourdon tube 3A or is located at the corresponding position of control end seat 14A or is located at the correspondence position of the end that control temperature compensating element 4A is connected with control end seat 14A; Present embodiment is located on the control Bourdon tube 3A; And the displacement amplitude that will control Bourdon tube 3A is limited in the force value of another setting or the correspondence position of density value; Make control Bourdon tube 3A no longer continue to move along with the increase of pressure or density; Avoid controlling temperature compensating element 4A distortion, make the precision of density monitor unaffected, guarantee system's reliably working.
The setting principle of the pairing density value in position of above-mentioned first position-limit mechanism, 22 restricting signal governor motions 11 is the alarming values that are greater than density monitor.
For example, as the rated pressure value Pe=0.6Mpa of density monitor, alarming value P1=0.52Mpa; During locking value P2=0.50Mpa, first position-limit mechanism 22 is the density value that Signal Regulation mechanism 11 is limited in setting the corresponding position of 0.53Mpa, and the gas density of sulphur hexafloride circuit breaker is when 0.517Mpa (below the alarming value); The operation sulphur hexafloride circuit breaker, density monitor is impacted, and control Bourdon tube 3A can receive impulsive force upwards; 4A makes Signal Regulation mechanism 11 also to top offset through the control temperature compensating element, but owing to receive the position-limiting action of 22 pairs of Signal Regulation mechanisms 11 of position-limit mechanism, Signal Regulation mechanism can only be moved upwards up to the correspondence position that density value is 0.53Mpa 11 moments; Cause Signal Regulation mechanism 11 up-down vibration; The peak swing that makes progress of this vibration is 0.53Mpa-0.517Mpa=0.013Mpa, and downward peak swing also can only arrive the 0.517Mpa-0.013Mpa=0.504Mpa position, obviously 0.504Mpa＞locking value (P2=0.50Mpa); This moment, misoperation can not take place in the locking contact of density monitor; Sulphur hexafloride circuit breaker is not carried out locking, satisfy the reclosing requirement of sulphur hexafloride circuit breaker, guarantee system's reliably working.The pairing density value in position of first position-limit mechanism, the 22 restricting signal governor motions 11 of present embodiment is 0.53Mpa, greater than the alarming value (P1=0.52Mpa) of density monitor, less than the rated pressure value (Pe=0.6Mpa) of density monitor.
And for example, as the rated pressure Pe=0.6Mpa of density monitor, alarming value P1=0.55Mpa; During locking value P2=0.50Mpa, first position-limit mechanism 22 is the density value that Signal Regulation mechanism 11 is limited in setting the correspondence position of 0.57Mpa, and the gas density of sulphur hexafloride circuit breaker is when 0.54Mpa (below the alarming value); The operation sulphur hexafloride circuit breaker, density monitor is impacted, and control Bourdon tube 3A can receive impulsive force upwards; 4A makes Signal Regulation mechanism 11 also to top offset through the control temperature compensating element, but owing to receive the position-limiting action of 22 pairs of Signal Regulation mechanisms 11 of position-limit mechanism, Signal Regulation mechanism can only be moved upwards up to the correspondence position that density value is 0.57Mpa 11 moments; Cause Signal Regulation mechanism 11 up-down vibration; The peak swing that makes progress of this vibration is 0.57Mpa-0.54Mpa=0.03Mpa, and maximum downwards amplitude also can only arrive the 0.54Mpa-0.03Mpa=0.51Mpa position, obviously 0.51Mpa＞locking value (P2=0.50Mpa); This moment, misoperation can not take place in the locking contact of density monitor; Sulphur hexafloride circuit breaker is not carried out locking, satisfy the reclosing requirement of sulphur hexafloride circuit breaker, guarantee system's reliably working.
The setting principle of the pairing force value in position of second position-limit mechanism 24 restriction control Bourdon tube 3A is: the normal pressure operating value P1 during according to 20 ℃ of the warning contacts of the specified requirement of gas density relay
20 ℃, and this P1
20 ℃Maximum operating temperature T corresponding to this density monitor
Maximum temperatureThe time pressure value P
Maximum temperature, this spacing position can guarantee that control Bourdon tube 3A rises and rises along with the density monitor actual pressure, rises to>=P up to the actual pressure of density monitor
Maximum temperatureDuring value, control Bourdon tube 3A touches second position-limit mechanism 24 and is limited to continue to move up.
The rated pressure value Pe=0.6Mpa that for example works as density monitor, alarming value P1=0.52Mpa, during locking value P2=0.50Mpa, maximum operating temperature T
Maximum temperatureWhen being 60 ℃, the normal pressure operating value P1 during 20 ℃ of density monitor
20 ℃During for 0.52Mpa, the spacing position of 24 pairs of control Bourdon tubes of second position-limit mechanism can guarantee: when this density monitor actual pressure rise to>=during 0.64Mpa, second position-limit mechanism 24 just begins spacing control Bourdon tube and moves up.
Fig. 5 is second kind of Shakeproof type sulfur hexafluoride gas density relay of the present invention; Also has the display part; This display part comprises demonstration Bourdon tube 3B, displays temperature compensating element, 4B, display end seat 14B, movement 6B, dial 1 and pointer 2; An end that shows Bourdon tube 3B is connected on the pedestal 5; The other end that shows Bourdon tube 3B links to each other with the end of displays temperature compensating element, 4B through display end seat 14B, and the other end of displays temperature compensating element, 4B is through showing linking arm 13 and show that connecting rod 7B is connected (or the other end of displays temperature compensating element, 4B directly is connected with movement 6B) with movement 6B that pointer 2 is installed on the movement 6B.Control Bourdon tube 3A in the control section and the demonstration Bourdon tube 3B in the display part are arranged side by side and control Bourdon tube 3A and show that the overall dimension of Bourdon tube 3B can be different.Demonstration Bourdon tube 3B in the display part is a flexible member, utilizes displays temperature compensating element, 4B that the pressure and temperature that changes is revised, the variation of reaction sulfur hexafluoride gas density.Promptly under the pressure effect of measured medium sulfur hexafluoride gas, because the effect of displays temperature compensating element, 4B, the variation of its density value have been arranged; Force value also changes accordingly; Force the not end that shows Bourdon tube 3B to produce corresponding strain and be subjected to displacement, by means of displays temperature compensating element, 4B, through linking arm 13 and connecting rod 7B; Pass to movement 6B; Movement 6B passes to pointer 2 again, and by tested sulfur hexafluoride gas density value is indicated on dial 1, density monitor just can show the density value of sulphur hexafluoride like this.
Density monitor utilization control temperature compensating element 4A of the present invention, displays temperature compensating element, 4B revise the pressure and temperature that changes, and can react the variation of Shakeproof type sulfur hexafluoride gas density.
Core parts first position-limit mechanism 22 of the present invention also is a L-square; This L-square is fixed on the switch fixture 20; The riser bottom of present embodiment L-square is installed on the switch fixture 20 through screw; And the transverse slat that makes L-square is positioned at the top of governor motion, and the installing hole that the riser bottom of this L-square is offered is a mounting hole, therefore can regulate the top position that transverse slat is positioned at Signal Regulation mechanism; Signal Regulation mechanism 11 restriction in place, and then realize that 22 pairs of Signal Regulation mechanisms 11 of this position-limit mechanism play position-limiting action when corresponding density value.When density monitor is impacted or vibrate; First position-limit mechanism, 22 ability restricting signal governor motions 11 are not subjected to displacement maybe and can reduce the amplitude that Signal Regulation mechanism 11 is subjected to displacement; Avoid signal generator misoperation just often to take place, guarantee system's reliably working in gas density.Described each sensitive switch 101,102,103 of present embodiment and pedestal 5 are positioned at the above and below of governor motion 11; And each sensitive switch lays respectively at the top of regulating part 111,112,113 corresponding with it, and the contact motion arm 1011,1021,1131 on each sensitive switch can contact with corresponding regulating part 111,112,113.
Because the signal controlling of this shock type density monitor has partly adopted second position-limit mechanism 24, this second position-limit mechanism 24 is a L-square and is installed on the pedestal 5 simultaneously.Present embodiment second position-limit mechanism plays position-limiting action to control end seat 14A, and then spacing control Bourdon tube 3A.So just realize avoiding or reducing the reaction force that control temperature compensating element 4A receives signal generator; The width that adds control temperature compensating element 4A is designed to 15～40mm; Its intensity is enough big; Thoroughly avoid controlling temperature compensating element 4A and deform, make the precision of density monitor unaffected, guarantee system's reliably working.
In shock type density monitor of the present invention, because display part and control section branch come, can select temperature compensating element equally according to the density of show value and the density of contact operating value, can improve the compensation precision of density monitor like this.
Fig. 6 is the third Shakeproof type sulfur hexafluoride gas density relay of the present invention, and core parts first position-limit mechanism 22 of the present invention is fixed on the pedestal 5.First position-limit mechanism 22 is made up of a L-square and an adjustment screw; Screw is passed through on pedestal 5 in the riser bottom of L-square; And the transverse slat that makes L-square is positioned at the top of governor motion, and adjustment screw 221 is revolved on the transverse slat that is inserted in L-square and is resisted against on the governor motion 11.Through regulate adjustment screw 221 can a setting and greater than the correspondence position restricting signal governor motion 11 of the density value of alarming value; Make Signal Regulation mechanism 11 along with the increase of density value is no longer mobile; And when density monitor is impacted or vibrate; Make Signal Regulation mechanism 11 not vibrate or reduce the amplitude of generation vibration; Avoid Signal Regulation mechanism 11 at the normal mistiming trigger signal generator of gas density, avoid signal generator generation misoperation (mistake locking or false alarm) to guarantee system's reliably working.
The same side that each sensitive switch 101,102 in the present embodiment and pedestal 5 are positioned at governor motion 11; And each sensitive switch 101,102 lays respectively at the below of regulating part 111,112 corresponding with it, and the contact operating grip 1011,1021 on each sensitive switch can contact with corresponding regulating part 111,112.
Fig. 7 is the 4th a kind of Shakeproof type sulfur hexafluoride gas density relay of the present invention, and core parts first position-limit mechanism 22 of the present invention is fixed on the pedestal 5.First position-limit mechanism 22 is made up of a L-square and an adjustment screw; Screw is passed through on pedestal 5 in the riser bottom of L-square; And the transverse slat that makes L-square is positioned at the top of governor motion 11, and adjustment screw 221 is revolved on the transverse slat that is inserted in L-square and is resisted against on the governor motion 11.Through regulate adjustment screw 221 can a setting and greater than the correspondence position restricting signal governor motion 11 of the density value of alarming value; Make Signal Regulation mechanism 11 along with the increase of density value is no longer mobile; And when density monitor is impacted or vibrate; Make Signal Regulation mechanism 11 not vibrate or reduce the amplitude of generation vibration; Avoid Signal Regulation mechanism 11 at the normal mistiming trigger signal generator of gas density, avoid signal generator generation misoperation (mistake locking or false alarm) to guarantee system's reliably working.
Fig. 8 is the 5th a kind of Shakeproof type sulfur hexafluoride gas density relay of the present invention; Core parts first position-limit mechanism 22 of the present invention is fixed on the pedestal 5; First position-limit mechanism 22 is made up of a L-square and an adjustment screw; Screw is passed through on pedestal 5 in the riser bottom of L-square; And the transverse slat that makes L-square is positioned at the top of the end of the control temperature compensating element 4A that is connected with Signal Regulation mechanism 11, and adjustment screw 221 is revolved on the transverse slat that is inserted in L-square and is resisted against on this control temperature compensating element 4A.Like this through regulate adjustment screw 221 can a setting and greater than the correspondence position restricting signal governor motion 11 of the density value of alarming value; Make Signal Regulation mechanism 11 along with the increase of density value is no longer mobile; And when density monitor is impacted or vibrate; Make Signal Regulation mechanism 11 not vibrate or reduce the amplitude of generation vibration; Avoid Signal Regulation mechanism 11 at the normal mistiming trigger signal generator of gas density, avoid signal generator generation misoperation (mistake locking or false alarm) to guarantee system's reliably working.And second position-limit mechanism 24 is fixed in the housing, and position-limit mechanism 24 is in place spacing control Bourdon tube 3A through debugging.
Fig. 9 is the 6th a kind of Shakeproof type sulfur hexafluoride gas density relay of the present invention, and in order further to improve the resistance to shock of density monitor, the control Bourdon tube 3A in the control section is vertical setting with demonstration Bourdon tube 3B in the display part.Core parts first position-limit mechanism 22 of the present invention is fixed on the pedestal 5; First position-limit mechanism 22 is made up of a L-square and an adjustment screw; Screw is passed through on pedestal 5 in the riser bottom of L-square; And the transverse slat that makes L-square is positioned at the top of governor motion, and adjustment screw 221 is revolved on the transverse slat that is inserted in L-square and is resisted against on the governor motion 11.Through regulate adjustment screw 221 can a setting and greater than the correspondence position restricting signal governor motion 11 of the density value of alarming value; Make Signal Regulation mechanism 11 along with the increase of density value is no longer mobile; And when density monitor is impacted or vibrate; Make Signal Regulation mechanism 11 not vibrate or reduce the amplitude of generation vibration; Avoid Signal Regulation mechanism 11 at the normal mistiming trigger signal generator of gas density, avoid signal generator generation misoperation (mistake locking or false alarm) to guarantee system's reliably working.And second position-limit mechanism 24 is fixed in the housing, and position-limit mechanism 24 is in place spacing control Bourdon tube 3A through debugging.
Figure 10 is the 7th a kind of Shakeproof type sulfur hexafluoride gas density relay of the present invention, and signal generator wherein (present embodiment employing sensitive switch) 101,102,103 is located at the below of Signal Regulation mechanism 11.First position-limit mechanism 22 is fixed on the pedestal 5; First position-limit mechanism 22 is a L-square, and this L-square is fixed on the pedestal 5, and the riser bottom of present embodiment L-square is installed on the pedestal 5 through screw; And the transverse slat that makes L-square is positioned at the top of governor motion; The installing hole that the riser bottom of this L-square is offered is a mounting hole, therefore can regulate the top position that transverse slat is positioned at Signal Regulation mechanism, 11 restrictions of Signal Regulation mechanism in place.
Figure 11 is the 8th a kind of Shakeproof type sulfur hexafluoride gas density relay of the present invention; For the resistance to shock that improves density monitor and be convenient to restricting signal governor motion 11; The signal controlling part also comprises transmission mechanism 6A; This transmission mechanism 6A is gear drive, leverage or fan-shaped curved surface transmission mechanism, and this transmission mechanism 6A is connected with Signal Regulation mechanism 11 and control temperature compensating element 4A through connecting rod 7A.First position-limit mechanism 22 is fixed on the pedestal 5; First position-limit mechanism 22 is a L-square, and this L-square is fixed on the pedestal 5, and the riser bottom of present embodiment L-square is installed on the pedestal 5 through screw; And the transverse slat that makes L-square is positioned at the top of governor motion; The installing hole that the riser bottom of this L-square is offered is a mounting hole, therefore can regulate the top position that transverse slat is positioned at Signal Regulation mechanism, 11 restrictions of Signal Regulation mechanism in place.
Figure 12 is the 9th a kind of Shakeproof type sulfur hexafluoride gas density relay of the present invention, and the signal controlling part also comprises gear drive 6A, and this transmission mechanism 6A is connected with Signal Regulation mechanism 11 and control temperature compensating element 4A through connecting rod 7A.Pointer 6A1 also is installed on the transmission mechanism 6A.First position-limit mechanism 22 is installed on the transmission mechanism 6A, and first position-limit mechanism 22 is that a lever can be spacing to the pointer 6A1 on the transmission mechanism 6A, and then 11 restrictions of Signal Regulation mechanism in place.
Figure 13 is the of the present invention ten a kind of Shakeproof type sulfur hexafluoride gas density relay, has omitted the display part among the figure.Control temperature compensating element 4A adopts the airtight Bourdon tube that has been filled with the normal pressure sulfur hexafluoride gas of temperature compensation function.It is flexible member that the operation principle of present embodiment is based on control temperature-compensating Bourdon tube 4A; Utilize the normal pressure sulfur hexafluoride gas that is filled with in the control temperature-compensating Bourdon tube 4A pressure and temperature that changes to be revised the variation of reaction sulfur hexafluoride gas density.Promptly under same ambient temperature, the temperature in the sulfur hexafluoride electrical equipment raises or reduces, and then controls normal pressure sulfur hexafluoride gas in the temperature-compensating Bourdon tube 4A and raises too or reduce, and has just overcome Influence of Temperature.And demonstration Bourdon tube 3B is still adopted in the display part, and displays temperature compensating element, 4B adopts bimetal leaf to realize temperature-compensating,
First position-limit mechanism 22 is fixed on the pedestal 5; First position-limit mechanism 22 is a L-square, and this L-square is fixed on the pedestal 5, and the riser bottom of present embodiment L-square is installed on the pedestal 5 through screw; And the transverse slat that makes L-square is positioned at the top of governor motion; The installing hole that the riser bottom of this L-square is offered is a mounting hole, therefore can regulate the top position that transverse slat is positioned at Signal Regulation mechanism, 11 restrictions of Signal Regulation mechanism in place.
Figure 14 is the 11 a kind of Shakeproof type sulfur hexafluoride gas density relay of the present invention, control Bourdon tube 3A and demonstration Bourdon tube 3B one nested mode setting, and the control Bourdon tube 3A among the figure can exchange with the relative position that shows Bourdon tube 3B.
The signal generator of Shakeproof type sulfur hexafluoride gas density relay signal controlling part of the present invention can adopt magnetic to help the formula electric contact, improves the resistance to shock of its density monitor.
The control temperature compensating element 4A of Shakeproof type sulfur hexafluoride gas density relay of the present invention can adopt Bourdon tube, and the bulb gas circuit outer with being located at housing through tube connector is communicated with.During use; Bulb and tested source of the gas are in the same environment; Make density monitor can accurately reflect the temperature of gas of the sulphur hexafluoride equipment of measured or monitoring; The density of the sulphur hexafluoride equipment of can actual response monitoring has improved the range of application of this Shakeproof type sulfur hexafluoride gas density relay greatly, can be applied on the sulfur hexafluoride electrical equipment well.
In sum; The present invention is owing to adopted Bourdon tube as pressure sensor; Adopted the principle of control section and display part independent design, of paramount importance is owing to adopt first position-limit mechanism that position-limiting action is played in Signal Regulation mechanism, makes Signal Regulation mechanism can when impacting or vibrate, corresponding displacement not take place and maybe can reduce the amplitude that Signal Regulation mechanism 11 is subjected to displacement; Avoid signal generator misoperation just often to take place, improved the resistance to shock of this density monitor greatly in density.When having realized that gas density is between alarming value and locking value, the operation sulphur hexafloride circuit breaker, this moment, misoperation can not take place in the locking contact of density monitor, can satisfy the reclosing requirement of sulphur hexafloride circuit breaker.Owing to adopted the two temperature compensating element,, more convenient to the selection of temperature compensating element, the unnecessary difference of taking into account display part and control section makes the temperature-compensating performance more accurate in addition.So Shakeproof type sulfur hexafluoride gas density relay of the present invention has the resistance to shock height, precision is high, the life-span is long, temperature-compensating performance characteristic of accurate; Particularly can satisfy the reclosing requirement of sulphur hexafloride circuit breaker, can be applied on the sulfur hexafluoride electrical equipment well.
Those of ordinary skill in the art will be appreciated that; Above embodiment only be used for explaining of 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.
Claims (10)
1. Shakeproof type sulfur hexafluoride gas density relay; Comprise housing and be arranged on the signal controlling part in the housing; Said signal control part branch comprises that control wave steps on pipe, control temperature compensating element, pedestal, control end seat, some signal generators and Signal Regulation mechanism; One end of said control Bourdon tube is connected on the said pedestal, and the other end of said control Bourdon tube links to each other with an end of said control temperature compensating element through said control end seat, and the other end of said control temperature compensating element is connected with said Signal Regulation mechanism; Said signal generator is by said Signal Regulation mechanism trigger action; It is characterized in that said density monitor comprises that also adjustable ground is installed in first position-limit mechanism in the said housing, this first position-limit mechanism is that set and greater than the correspondence position of the density value of alarming value one with said Signal Regulation mechanics limit; Make said Signal Regulation mechanism along with the increase of density value is no longer mobile; And when said density monitor is impacted or vibrates, said Signal Regulation mechanism is not subjected to displacement or reduces the amplitude that is subjected to displacement, avoid the said signal generator of said Signal Regulation mechanism false triggering when gas density is normal.
2. Shakeproof type sulfur hexafluoride gas density relay as claimed in claim 1; It is characterized in that; Said density monitor also comprises being located in the said housing and with said signal control part and divides relatively independently indicating value display part; This indicating value display part comprises demonstration Bourdon tube, displays temperature compensating element,, display end seat, movement and pointer; One end of said demonstration Bourdon tube is connected on the said pedestal; The other end of said demonstration Bourdon tube links to each other with an end of said displays temperature compensating element, through said display end seat, and the other end of said displays temperature compensating element, is through showing linking arm and show that connecting rod is connected with said movement that said pointer is installed on the said movement.
3. according to claim 1 or claim 2 Shakeproof type sulfur hexafluoride gas density relay; It is characterized in that said first position-limit mechanism is located at the corresponding position of said Signal Regulation mechanism or is located at the corresponding position of the end that said control temperature compensating element is connected with said Signal Regulation mechanism.
4. according to claim 1 or claim 2 Shakeproof type sulfur hexafluoride gas density relay; It is characterized in that; Said signal controlling part comprises that also the transmission mechanism that be connected or that be connected with said control temperature compensating element with said Signal Regulation mechanism, said first position-limit mechanism are located at the corresponding position of said transmission mechanism.
5. Shakeproof type sulfur hexafluoride gas density relay as claimed in claim 4 is characterized in that, said transmission mechanism is gear drive, leverage or fan-shaped curved surface transmission mechanism.
6. according to claim 1 or claim 2 Shakeproof type sulfur hexafluoride gas density relay; It is characterized in that; Said density monitor comprises that also adjustable ground is installed in second position-limit mechanism in the said housing; This second position-limit mechanism is located at the corresponding position of said control Bourdon tube or is located at the corresponding position of control end seat or is located at the correspondence position of the end that said control temperature compensating element is connected with said control end seat; And the displacement amplitude of said control Bourdon tube is limited in the force value of another setting or the correspondence position of density value; Make said control Bourdon tube no longer continue to move, avoid said control temperature compensating element distortion along with the increase of pressure or density.
7. according to claim 1 or claim 2 Shakeproof type sulfur hexafluoride gas density relay is characterized in that said control temperature compensating element and said displays temperature compensating element, are the airtight Bourdon tube that is filled with gas.
8. according to claim 1 or claim 2 Shakeproof type sulfur hexafluoride gas density relay is characterized in that said control temperature compensating element and said displays temperature compensating element, are bimetal leaf, and the width of said control temperature compensating element is 8～50mm.
9. according to claim 1 or claim 2 Shakeproof type sulfur hexafluoride gas density relay is characterized in that said signal generator is that sensitive switch or magnetic help the formula electric contact.
10. Shakeproof type sulfur hexafluoride gas density relay as claimed in claim 2 is characterized in that, said control Bourdon tube and said demonstration Bourdon tube are for being arranged side by side or orthogonal setting or nested setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210032293.2A CN102543571B (en) | 2012-02-14 | 2012-02-14 | Anti-vibration sulfur hexafluoride gas density relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210032293.2A CN102543571B (en) | 2012-02-14 | 2012-02-14 | Anti-vibration sulfur hexafluoride gas density relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102543571A true CN102543571A (en) | 2012-07-04 |
| CN102543571B CN102543571B (en) | 2014-11-05 |
Family
ID=46350187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210032293.2A Active CN102543571B (en) | 2012-02-14 | 2012-02-14 | Anti-vibration sulfur hexafluoride gas density relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102543571B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103456560A (en) * | 2013-09-18 | 2013-12-18 | 上海乐研电气科技有限公司 | High-shock-resistance sulfur hexafluoride gas density relay |
| CN103700541A (en) * | 2014-01-16 | 2014-04-02 | 上海乐研电气科技有限公司 | Thin sulfur hexafluoride gas density relay |
| CN104681351A (en) * | 2015-02-05 | 2015-06-03 | 上海上芃电气有限公司 | Convenient-to-read high-accuracy sulfur hexafluoride gas density relay |
| CN112595628A (en) * | 2020-11-23 | 2021-04-02 | 国网安徽省电力有限公司检修分公司 | Oil-free anti-seismic remote transmission type sulfur hexafluoride gas density monitor |
| US11885827B2 (en) | 2020-03-11 | 2024-01-30 | Shanghai Roye Electric Co., Ltd. | High anti-vibration gas density monitor |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5700956A (en) * | 1996-11-12 | 1997-12-23 | Huang; Tien-Tsai | Signal generating pressure gauge |
| CN1996529A (en) * | 2006-01-06 | 2007-07-11 | 苏丽芳 | Vibration-resisting pointer SF6 gas density relay |
| CN200953313Y (en) * | 2006-04-07 | 2007-09-26 | 苏丽芳 | Comprehensive positioning antivibrating indicating point type SF gas density relay |
| CN201004429Y (en) * | 2006-03-17 | 2008-01-09 | 苏丽芳 | End base vibration pointer SF6 gas density relay |
| CN201044226Y (en) * | 2006-04-18 | 2008-04-02 | 苏丽芳 | Synthetic location shake-proof pointer type SF* gas density relay |
| CN101847544A (en) * | 2010-05-14 | 2010-09-29 | 上海乐研电气科技有限公司 | Sulfur hexafluoride gas density relay |
| CN102013357A (en) * | 2009-09-04 | 2011-04-13 | 上海乐研电气科技有限公司 | Sulfur hexafluoride gas density relay |
| CN202549717U (en) * | 2012-02-14 | 2012-11-21 | 上海乐研电气科技有限公司 | Vibration-proof sulfur hexafluoride gas density relay |
-
2012
- 2012-02-14 CN CN201210032293.2A patent/CN102543571B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5700956A (en) * | 1996-11-12 | 1997-12-23 | Huang; Tien-Tsai | Signal generating pressure gauge |
| CN1996529A (en) * | 2006-01-06 | 2007-07-11 | 苏丽芳 | Vibration-resisting pointer SF6 gas density relay |
| CN201004429Y (en) * | 2006-03-17 | 2008-01-09 | 苏丽芳 | End base vibration pointer SF6 gas density relay |
| CN200953313Y (en) * | 2006-04-07 | 2007-09-26 | 苏丽芳 | Comprehensive positioning antivibrating indicating point type SF gas density relay |
| CN201044226Y (en) * | 2006-04-18 | 2008-04-02 | 苏丽芳 | Synthetic location shake-proof pointer type SF* gas density relay |
| CN102013357A (en) * | 2009-09-04 | 2011-04-13 | 上海乐研电气科技有限公司 | Sulfur hexafluoride gas density relay |
| CN101847544A (en) * | 2010-05-14 | 2010-09-29 | 上海乐研电气科技有限公司 | Sulfur hexafluoride gas density relay |
| CN202549717U (en) * | 2012-02-14 | 2012-11-21 | 上海乐研电气科技有限公司 | Vibration-proof sulfur hexafluoride gas density relay |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103456560A (en) * | 2013-09-18 | 2013-12-18 | 上海乐研电气科技有限公司 | High-shock-resistance sulfur hexafluoride gas density relay |
| CN103456560B (en) * | 2013-09-18 | 2015-12-02 | 上海乐研电气科技有限公司 | A kind of high antivibration sulfur hexafluoride gas density relay |
| CN103700541A (en) * | 2014-01-16 | 2014-04-02 | 上海乐研电气科技有限公司 | Thin sulfur hexafluoride gas density relay |
| CN104681351A (en) * | 2015-02-05 | 2015-06-03 | 上海上芃电气有限公司 | Convenient-to-read high-accuracy sulfur hexafluoride gas density relay |
| US11885827B2 (en) | 2020-03-11 | 2024-01-30 | Shanghai Roye Electric Co., Ltd. | High anti-vibration gas density monitor |
| CN112595628A (en) * | 2020-11-23 | 2021-04-02 | 国网安徽省电力有限公司检修分公司 | Oil-free anti-seismic remote transmission type sulfur hexafluoride gas density monitor |
| CN112595628B (en) * | 2020-11-23 | 2024-04-05 | 国网安徽省电力有限公司检修分公司 | Oilless anti-seismic remote sulfur hexafluoride gas density monitor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102543571B (en) | 2014-11-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102543571B (en) | Anti-vibration sulfur hexafluoride gas density relay | |
| CN201804791U (en) | Sulfur hexafluoride gas density relay | |
| CN101847544A (en) | Sulfur hexafluoride gas density relay | |
| CN204720384U (en) | A kind of sulfur hexafluoride gas density relay with double compensation element | |
| CN102013357A (en) | Sulfur hexafluoride gas density relay | |
| CN202549717U (en) | Vibration-proof sulfur hexafluoride gas density relay | |
| CN201465901U (en) | Oil charge anti-vibration sulfur hexafluoride gas density relay | |
| CN103594284B (en) | A kind of sulfur hexafluoride gas density relay | |
| CN103456561A (en) | High-precision sulfur hexafluoride gas density relay | |
| KR20200090914A (en) | Gas density relay precision improvement method and high precision gas density relay | |
| CN1971795B (en) | Shakeproof type sulfur hexafluoride gas density relay | |
| CN103715010B (en) | A kind of sulfur hexafluoride gas density relay | |
| CN203674073U (en) | Sulfur hexafluoride gas density relay | |
| CN203521303U (en) | Sulfur hexafluoride gas density relay | |
| CN101387891B (en) | Vibration resistant pointer type SF6 gas density controller | |
| CN103456562B (en) | A kind of sulfur hexafluoride gas density relay | |
| CN203339057U (en) | Anti-vibration pointer type SF6 gas density relay | |
| CN103456563A (en) | Sulfur hexafluoride gas density relay | |
| CN201478199U (en) | Sulphur hexafluoride gas density relay | |
| CN201570439U (en) | Vibration resistance pointer type SF6 gas density relay | |
| CN1996529B (en) | Vibration-resisting pointer SF6 gas density relay | |
| CN201274258Y (en) | Synthetic position limiting vibration absorbing pointer type SF6 gas density relay | |
| CN203521305U (en) | Sulfur hexafluoride gas density relay | |
| CN200969319Y (en) | Switch operation arm positioning anti-vibration pointer type SF gas density relay | |
| CN201163597Y (en) | Shake-proof 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: 20161228 Address after: 200000 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 201802 new No. 221 Building 1 B zone 1 room 123 Patentee before: Shanghai Roye Electronic Science & Technology Co., Ltd. |