CN103456563A - Sulfur hexafluoride gas density relay - Google Patents
Sulfur hexafluoride gas density relay Download PDFInfo
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- CN103456563A CN103456563A CN2013104261468A CN201310426146A CN103456563A CN 103456563 A CN103456563 A CN 103456563A CN 2013104261468 A CN2013104261468 A CN 2013104261468A CN 201310426146 A CN201310426146 A CN 201310426146A CN 103456563 A CN103456563 A CN 103456563A
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Abstract
The invention discloses a sulfur hexafluoride gas density relay which is high in shock resistance, a signal generator is good in connecting point contacting and electrical performance, service life is long, and accuracy is high. The sulfur hexafluoride gas density relay comprises a shell body, a base, an end base, a Burdon tube, a temperature compensate element, a machine core, a plurality of microswitches, switch adjusting mechanisms and a signal trigger mechanism. The end base, the Burdon tube, the temperature compensate element, the machine core, the plurality of microswitches, the switch adjusting mechanisms and the signal trigger mechanism are arranged in the shell body. The number of the switch adjusting mechanisms is the same as that of the microswitches. Each switch adjusting mechanism comprises a fixing piece, a rotating shaft rivet a spring and a rotating piece. One end of each fixing piece is connected with the other end of each rotating piece through each rotating shaft rivet and each spring. The other end of each fixing piece is fixed on the base, so that each rotating shaft rivet and a sector gear shaft are coaxial. The other end of each rotating piece is fixedly provided with each microswitch. The signal trigger mechanism comprises a signal trigger mechanism shaft and a plurality of cams. The signal trigger mechanism shaft is vertically fixed on the surface of a sector gear. The cams are arranged on the signal trigger mechanism shaft and abut against connecting point operation handles of the microswitches in a one-to-one-corresponding mode.
Description
Technical field
The present invention relates to a kind of sulfur hexafluoride gas density relay.
Background technology
At present, be used for monitoring sulfur hexafluoride gas density in sulfur hexafluoride electrical equipment generally adopt contact be sensitive switch without the oil type gas density relay, as Chinese patent or patent application 200510110648.5, 200520045890.4, 200520045891.9, 200520115321.2, 200810201462.4, 200910195174.7, 201020190271.5 with 201010171798.8 disclosed gas density relays (as depicted in figs. 1 and 2) generally comprise dial 1, pointer 2, Baden's pipe 3, temperature compensating element 4, pedestal 5, with the movement 6 that shows enlarger, connecting rod 7, housing 8, joint 9, sensitive switch 101, 102, 103, regulating part 111, 112, 113, contact motion arm 12, linking arm 13, end seat 14, junction block 15, watch crystal 16, case 17, printed circuit board 18, location-plate 19, fixed head 20, electric wire 21 and sulfur hexafluoride gas feed tube 22, wherein, joint 9, junction block 15, watch crystal 16, case 17 and pedestal 5 are separately fixed on housing 8.Movement 6 and fixed head 20 are arranged on respectively on pedestal 5, and pointer 2 and dial 1 are separately fixed on movement 6.One end of Baden's pipe 3 is welded on pedestal 5, the other end is connected with an end of temperature compensating element 4 by end seat 14, the other end of temperature compensating element 4 is connected with linking arm 13, and an end of linking arm 13 is connected with an end of connecting rod 7, and the other end of connecting rod 7 is connected with movement 6.The extension that contact motion arm 12 is linking arm 13, be fixed with regulating part 111,112,113 on contact motion arm 12.Sensitive switch 101,102,103 is welded on respectively on printed circuit board 18, and printed circuit board 18 is arranged on fixed head 20, and fixed head 20 is arranged on again on pedestal 5.Sensitive switch 101,102,103 is fixed on the below of regulating part 111,112,113 correspondingly.Be respectively equipped with operating grip 1011,1021,1031 on each sensitive switch.Location-plate 19 rear ends are fixed on movement 6, and front end extends to the below of Baden's pipe 3 end seats 14 that are connected with temperature compensating element 4.The contact of sensitive switch 101,102,103 is connected to junction block 15 from printed circuit board 18 by electric wire 21, and junction block 15 is fixed on housing 8.
Although the sensitive switch that above-mentioned these gas density relays adopt has advantages of good electric property, but because the length of contact motion arm 12 is longer, and be a cantilever beam, when the operation sulphur hexafloride circuit breaker, cause 12 vibrations of contact motion arm very large, and then cause that misoperation appears in sulfur hexafluoride gas density relay, sensitive switch even appears damaging, lost performance fully, resistance to shock is poor in a word, is difficult to guarantee the system reliably working.
See Fig. 3 and Fig. 4 in patent 201020190271.5 and 201010171798.8() disclosed gas density relay also comprises displacement amplifying mechanism, the initiating terminal of this displacement amplifying mechanism is connected with the other end of temperature compensating element, and amplify the contact operating grip that end drives sensitive switch, the contact on sensitive switch is switched on or switched off; When the gas density value changes, Bourdon tube and temperature compensating element produce displacement, and this displacement passes to sensitive switch after amplifying by displacement amplifying mechanism, makes sensitive switch send corresponding signal, completes the function of density monitor.Yet, when sulphur hexafloride circuit breaker carries out breaking-closing operating, can produce vibration to Baden's pipe and temperature compensating element, this vibration can cause that Baden's pipe and temperature compensating element are subjected to displacement, this displacement passes to sensitive switch after also amplifying by displacement amplifying mechanism, makes sensitive switch send corresponding signal.Will produce misoperation like this, that is to say that its resistance to shock is bad, can not guarantee the system reliably working, bring great hidden danger to the safe operation of electrical network.These sulfur hexafluoride gas density relays can not meet the reclosing requirement of sulphur hexafloride circuit breaker simultaneously.Be the blowing pressure (density) when alarm pressure value is following, can not bear the shock test of 50g, 11ms, now misoperation can occur in the locking contact.For example: the density monitor of 0.6/0.52/0.5, while dropping to actuation of an alarm point, now carry out the shock test of 50g, 11ms when gas pressure (density), misoperation can occur in the locking contact, switch has been carried out to locking, can not meet the reclosing requirement of sulphur hexafloride circuit breaker.And the problem of patent 200520115321.2 is similar to patent 201010171798.8, be also can cause vibration displacement pass to sensitive switch after amplifying by displacement amplifying mechanism and (by the control sector gear, pass to the controller mandrel, pass to sensitive switch through the controller mandrel again), amplify so widely the displacement that vibration causes, be equivalent to make vibration to become more severe.Due to very large in the time vibration of sulphur hexafloride circuit breaker breaking-closing operating, need especially the better gas density relay of resistance to shock, above-mentioned these gas density relays can not be dealt with.
In addition, patent 200810201462.4(is shown in Fig. 5) disclosed a kind of gas density relay, although contact has also adopted sensitive switch, also be provided with the regulating part corresponding with sensitive switch 141～143 and contact operating axis 16, wherein, one end of contact operating axis 16 is connected on the sector shaft 24 of movement 2 and with this sector shaft 24 and rotates, on this contact operating axis 16 along its length compartment of terrain radially offer the threaded perforations corresponding with sensitive switch 91～93, regulating part 141～143 is plugged in threaded perforations correspondingly and its end is resisted against on the motion arm of sensitive switch 91～93.By the contact operating axis 16 be fixed on sector shaft 24, rotate, the regulating part 141～143 that makes to be fixed on this contact operating axis 16 drives sensitive switch 91～93 actions.Because the rotational angle of sector shaft 24 is very little, the precision of product has been reduced.More seriously because the actuating length of the motion arm of sensitive switch is short, and regulating part 141～143 adopts, be adjustment screw.When Baden's pipe 6 moves, sector shaft 24 with movement 2 rotates, make adjustment screw rotate the motion arm of encountering sensitive switch, drive the moving contact of motion arm push switch, in the end face that the turns to adjustment screw situation vertical with the motion arm of sensitive switch, adjustment screw is blocked and can not have been rotated, so be difficult to the density monitor of the gamut of realization-0.1～0.9MPa, particularly be difficult to realize the demonstration of be initiated with-0.1MPa, while vacuumizing, just cannot show, be difficult to apply, so be starved of innovation.
Summary of the invention
The object of the invention is to overcome the defect of prior art, a kind of sulfur hexafluoride gas density relay is provided, its resistance to shock is higher, and the contact of signal generator contacts and electric property is better, long working life, and precision is high.
The first technical scheme that realizes above-mentioned purpose is: a kind of sulfur hexafluoride gas density relay comprises housing, is arranged on pedestal, end seat, Baden's pipe, temperature compensating element, movement and some sensitive switches as signal generator in housing; The sector gear that described movement comprises the upper and lower clamping plate that be arranged in parallel, be connected across shaft gear and sector shaft between upper and lower clamping plate rotationally, be arranged on sector shaft and be connected with a joggle with shaft gear, the initiating terminal of this sector gear is connected with an end of described temperature compensating element with linking arm by connecting rod successively; The other end of described temperature compensating element is connected with an end of described Baden pipe by described end seat; The other end of described Baden pipe is connected on described pedestal; Described gas density relay also comprises switch governor motion and a signal trigger mechanism identical with described sensitive switch quantity; Wherein,
Each described switch governor motion comprises a fixture, a rotating shaft rivet, a spring and a rotating part;
One end of described fixture is connected with an end of described rotating part with spring by described rotating shaft rivet, the other end of described fixture is fixed on described pedestal or movement, so that described rotating shaft rivet is coaxial with described sector shaft, the other end of described rotating part is fixed described sensitive switch;
Described signal trigger mechanism comprises signal trigger mechanism axle and the cam identical with described sensitive switch quantity, described signal trigger mechanism axle is vertically fixed on the surface of described sector gear, and described cam is arranged on the signal trigger mechanism axle and is resisted against correspondingly on the contact lever of each sensitive switch;
When the gas density value changes, described Bourdon tube and temperature compensating element produce displacement, this displacement drives described sensitive switch by described sector gear and described signal trigger mechanism successively, makes described sensitive switch send corresponding signal, completes the function of gas density relay.
Above-mentioned sulfur hexafluoride gas density relay, wherein, described rotating part is to have the neck of hook and hook
the shape crotch-shaped, with its contact lever, the mode relative with described hook is fixed on the end of the neck of hook of described rotating part to described sensitive switch.
Above-mentioned sulfur hexafluoride gas density relay, wherein, described spring is butterfly spring or plain cushion spring.
Above-mentioned sulfur hexafluoride gas density relay, wherein, be fixed on described pedestal by switch auxiliary body after the rotating part adjusting position of described sensitive switch by described switch governor motion again.
Above-mentioned sulfur hexafluoride gas density relay, wherein, on described signal trigger mechanism axle with position-limit mechanism.
Above-mentioned sulfur hexafluoride gas density relay, wherein, described movement is also with damping mechanism.
The second technical scheme that realizes above-mentioned purpose is: a kind of sulfur hexafluoride gas density relay comprises housing, is arranged on pedestal, end seat, Baden's pipe, temperature compensating element, demonstration movement, control movement and some sensitive switches as signal generator in housing; One end of described Baden pipe is connected on described pedestal, and the other end is connected with an end of described temperature compensating element by described end seat; Described sensitive switch is arranged in described housing and with the contact operating grip; Described gas density relay also comprises switch governor motion and a signal trigger mechanism identical with described sensitive switch quantity; Wherein,
Each described switch governor motion comprises a fixture, a rotating shaft rivet, a spring and a rotating part;
One end of described fixture is connected with an end of described rotating part with spring by described rotating shaft rivet, the other end of described fixture is fixed on described pedestal or controls on movement, so that described rotating shaft rivet is coaxial with the sector shaft of described control movement, the other end of described rotating part is fixed described sensitive switch; Described signal trigger mechanism comprises signal trigger mechanism axle and the cam identical with described sensitive switch quantity, described signal trigger mechanism axle is vertically fixed on the surface of sector gear of described control movement, and described cam is arranged on the signal trigger mechanism axle and is resisted against correspondingly on the contact lever of each sensitive switch;
When the gas density value changes, described Bourdon tube and temperature compensating element produce displacement, this displacement drives described sensitive switch by sector gear and the described signal trigger mechanism of described control movement successively, make described sensitive switch send corresponding signal, complete the function of gas density relay.
The third technical scheme that realizes above-mentioned purpose is: a kind of sulfur hexafluoride gas density relay, comprise that relatively independent signal controlling part and indicating value show part, described signal control part is divided and is comprised the control pedestal, the control end seat, control Baden pipe, control temperature compensating element, control movement and some sensitive switches as signal generator, one end of described control Baden pipe is connected on described control pedestal, the other end is connected with an end of described control temperature compensating element by described control end seat, described sensitive switch is arranged in described housing and with the contact operating grip, described gas density relay also comprises switch governor motion and a signal trigger mechanism identical with described sensitive switch quantity, wherein,
Each described switch governor motion comprises a fixture, a rotating shaft rivet, a spring and a rotating part;
One end of described fixture is connected with an end of described rotating part with spring by described rotating shaft rivet, and the other end of described fixture is fixed on described control pedestal or controls on movement, so that described rotating shaft rivet is coaxial with the sector shaft of described control movement; The other end of described rotating part is fixed described sensitive switch; Described signal trigger mechanism comprises that signal trigger mechanism axle and the cam identical with described sensitive switch quantity, described signal trigger mechanism axle are vertically fixed on the surface of sector gear of described control movement; Described cam is arranged on the signal trigger mechanism axle and is resisted against correspondingly on the contact lever of each sensitive switch;
When the gas density value changes, described control Bourdon tube and control temperature compensating element produce displacement, this displacement passes to described sensitive switch by sector gear and the described signal trigger mechanism of described control movement successively, make described sensitive switch send corresponding signal, complete the function of density monitor;
Described indicating value display part divides and comprises demonstration Baden pipe, displays temperature compensating element,, display base, display end seat, shows movement and pointer, one end of described demonstration Baden pipe is connected on described display base, the other end is connected with an end of described displays temperature compensating element, by described display end seat, the other end of described displays temperature compensating element, is connected with the initiating terminal of described demonstration movement, and described pointer is connected with the central shaft of described demonstration movement.
The technical scheme of sulfur hexafluoride gas density relay of the present invention, prior art is compared has following obvious advantage and disadvantage:
When the gas density value changes, Bourdon tube and temperature compensating element produce displacement, and this displacement passes to sensitive switch by sector gear and the signal trigger mechanism of movement, makes sensitive switch send corresponding signal, completes the function of density monitor.With the disclosed gas density device of patent 200520045890.4,200520045891.9 and 200910195174.7, compare, owing to there is no the contact motion arm, there do not is cantilever beam, so when the operation sulphur hexafloride circuit breaker, the vibration caused is just very little, and then can not cause that misoperation appears in sulfur hexafluoride gas density relay; Compare with 201010171798.8 disclosed gas density devices with patent 201020190271.5, after not adopting the signal enlarger that displacement is amplified, then remove the control signal generator, vibration just is not exaggerated so simultaneously.Make that gas density relay has that resistance to shock is high, the advantage such as the good electric property of signal generator, contact contact, long working life, guaranteed the system reliably working, be a kind of sulfur hexafluoride gas density relay of genuine performance brilliance, can be applied in well on various sulfur hexafluoride electrical equipments.
Also have, because the initiating terminal of the sector gear of movement is fixedly connected with the other end of temperature compensating element with linking arm by connecting rod, or the initiating terminal of the sector gear of movement directly is fixedly connected with the other end of temperature compensating element; The corresponding setting of contact operating grip of signal trigger mechanism and sensitive switch; Movement can also, with damping mechanism, also can further improve resistance to shock.
In addition, the width of Baden's pipe is 14～60mm; Temperature compensating element is bimetallic material or the airtight compensation Baden pipe that has been filled with the gas that temperature-compensating uses.When temperature compensating element is that the airtight compensation Baden pipe that is filled with gas or signal controlling partly are sealed in one while being filled with in the air chamber of sulfur hexafluoride gas (it controls temperature compensating element is sulfur hexafluoride gas), compensation Baden pipe or air chamber can be communicated with the temperature-sensitive bag gas circuit outside being located at housing by tube connector.During use, temperature-sensitive bag and tested source of the gas are in same environment, make density monitor can accurately reflect the temperature of gas of the sulphur hexafluoride equipment of measured or monitoring, the gas density of the sulphur hexafluoride equipment of can actual response monitoring, improved greatly the range of application of this high antivibration, high accuracy sulfur hexafluoride gas density relay, can be applied on sulfur hexafluoride electrical equipment well.
Sulfur hexafluoride gas density relay of the present invention can also be sulfur hexafluoride gas mixture density monitor or Compressed Gas density monitor.
The accompanying drawing explanation
The structural representation of the first pointer sulfur hexafluoride gas density relay that Fig. 1 is prior art;
The partial side view that Fig. 2 is Fig. 1;
The structural representation of the second pointer sulfur hexafluoride gas density relay that Fig. 3 is prior art;
The partial side view that Fig. 4 is Fig. 3;
The partial perspective view of the third pointer sulfur hexafluoride gas density relay that Fig. 5 is prior art;
The partial perspective view that Fig. 6 is sulfur hexafluoride gas density relay of the present invention;
The partial side view that Fig. 7 is Fig. 6;
The partial elevation view that Fig. 8 is sulfur hexafluoride gas density relay of the present invention;
The structural representation of the governor motion that Fig. 9 is the sensitive switch in sulfur hexafluoride gas density relay of the present invention.
Embodiment
In order to be understood technical scheme of the present invention better, below by specific embodiment, also be described in detail by reference to the accompanying drawings.
Refer to Fig. 6, Fig. 7, Fig. 8 and Fig. 9, the first sulfur hexafluoride gas density relay of the present invention, comprise Baden's pipe 3, temperature compensating element 4(present case adopts bimetallic material), pedestal 5, movement 6, connecting rod 7, housing, joint, three sensitive switches 101, 102, 103, three switch governor motions 111, 112, 113, signal trigger mechanism 12, linking arm 13, end seat 14, junction block, watch crystal, case, electric wire, switch is auxiliary body 24 and position-limit mechanism 25 fixedly, the present embodiment is with three sensitive switches 101, 102, 103 as the gas density relay signal generator, this gas density relay is also with being useful on dial and the pointer that shows indicating value.
The width of Baden's pipe 3 is 14～60mm, in order to improve resistance to shock, the width of Baden's pipe 3 is elected 20～40mm as, one end of Baden's pipe 3 is connected on pedestal 5, the other end is welded on end seat 14, this end seat 14 is connected with an end of temperature compensating element 4, and the other end of temperature compensating element 4 is connected with linking arm 13, this temperature compensating element 4 be shaped as ∪ shape or Ω shape; Linking arm 13 is connected with an end of connecting rod 7 again, and the other end of connecting rod 7 is connected with the initiating terminal 611 of the sector gear 61 of movement 6; Signal trigger mechanism 12 is comprised of signal trigger mechanism axle 121 and three cams 1221,1222,1223, and signal trigger mechanism axle 121 is vertically fixed on the surface of sector gear 61 of movement 6.Specifically, movement 6 comprises machine mandrel 60, hairspring 64, movement train wheel bridge 65, and the movement lower plate 66 that be arranged in parallel of movement train wheel bridge 65, the sector gear 61 that is connected across the central gear 63 between movement train wheel bridge 65 and movement lower plate 66 and is connected with a joggle with this central gear 63 rotationally; On the surface of the sector gear that is vertically connected on movement 6 61 of signal trigger mechanism axle 121 and with this sector gear 61, rotate, three cam 1221,1222,1223 intervals, the ground of the length direction along signal trigger mechanism axle 121 are arranged on signal trigger mechanism axle 121, and these three cams 1221,1222,1223 are resisted against on the contact lever 1011,1021,1031 of sensitive switch 101,102,103 correspondingly.Movement 6 can also be installed damping mechanism at an end of sector shaft 610.
Three switch governor motions 111,112,113 comprise that rotating part 1114,1124,1134, fixture 1111,1121,1131, spring 1112,1122,1132 and rotating shaft rivet 1113,1123,1133(are shown in Fig. 9), wherein, rotating part 1114,1124,1134 is the L shaped crotch-shaped that comprises shank and hook, and the head of the hook of this rotating part is offered a connecting hole; Fixture 1111,1121,1131 is to offer two installing holes on a winding sheet and surface, offers a connecting hole for one of fixture 1111,1121,1131; Spring 1112,1122,1132 is butterfly spring or plain cushion spring; One of connecting hole of being provided with of the hook head of rotating part 1114,1124,1134 and fixture 1111,1121,1131 is connected with spring 1112,1122,1132 by rotating shaft rivet 1113,1123,1133.
Three switch governor motions 111,112,113 are fixed on pedestal 5 by fixture 1111,1121,1131 correspondingly, and the rotating shaft rivet 1113,1123,1133 of three switch governor motions 111,112,113 is all coaxial with sector shaft 610; Three fine motion sensitive switches 101,102,103 are fixed on the outer end of shank of the rotating part 1114,1124,1134 of three switch governor motions 111,112,113 correspondingly in its contact lever 1011,1021,1031 modes relative with hook, for regulating the position of sensitive switch 101,102,103; The signal trigger mechanism axle 121 of signal trigger mechanism 12 and three cams 1221,1222,1223 drive the contact lever 1011,1021,1031 of sensitive switch 101,102,103 according to gas density value and force value, the contact on sensitive switch 101,102,103 is switched on or switched off; The contact of sensitive switch 101,102,103 is connected by electrical wiring on junction block, and junction block 15 is fixed on housing 8; Joint 9 is fixed on housing 8, and watch crystal 16, case 17 and sealing ring thereof are separately fixed on housing 8, can protect housing 8 internal mechanisms to avoid mechanical damage and dirt, rainwater is invaded.One end of deferent is connected with pedestal 5, and positiver sealing; The other end of deferent is connected with joint 9, and positiver sealing.In order further to improve the resistance to shock of density monitor, signal trigger mechanism axle 121 is also with position-limit mechanism 25, the other end of 25 pairs of signal trigger mechanism axles 121 of this position-limit mechanism plays position-limiting action, prevents that signal trigger mechanism axle 121 from rocking because vibration causes, thereby improves resistance to shock.
Switch fixedly auxiliary body 24 is fixed on pedestal 5, and the switch fixedly form of auxiliary body 24 is unrestricted, can variation.After the contact operating value of density monitor regulates, need to fix thoroughly sensitive switch, specifically, by switch fixedly auxiliary body 24 rotating part 1114,1124,1134 of three switch governor motions 111,112,113 is fixed on pedestal 5, sensitive switch is fixed thoroughly, be not subject to any vibration and be shifted, thereby can greatly improve the resistance to shock of relay, guaranteeing the system reliably working.Sensitive switch 101,102,103 can adopt normal opened contact, also can adopt normally closed contact, and its installation site is unrestricted.
The operation principle of sulfur hexafluoride gas density relay of the present invention is based on flexible member Baden pipe 3, utilizes the pressure and temperature of 4 pairs of variations of temperature compensating element to be revised, the variation of reaction sulfur hexafluoride gas density.Under the pressure-acting of measured medium sulfur hexafluoride gas, due to the effect that temperature compensating element 4 has been arranged, the variation of its density value, force value also changes accordingly, force the end of Baden's pipe 3 to produce corresponding strain-displacement, by means of temperature compensating element 4 and connecting rod 7, pass to successively sector gear 61 and signal trigger mechanism axle 121, and then pass to three cams 1221,1222,1223.Three cams 1221,1222,1223 drive the contact operating grip 1011,1021,1031 of sensitive switch 101,102,103 according to gas density value and force value, make the contact on sensitive switch 101,102,103 be switched on or switched off and send corresponding signal, complete the function of density monitor.If leaked gas, its density value drops to a certain degree (reach and report to the police or the locking value), Baden's pipe 3 produces accordingly to bottom offset, by temperature compensating element 4, make linking arm 13 to bottom offset, pass to connecting rod 7, connecting rod 7 passes to sector gear 61 and the signal trigger mechanism axle 121 of movement 6 successively, signal trigger mechanism axle 121 drives three cams 1221, 1222, 1223 rotate, while turning to a certain degree, three cams 1221, 1222, 1223 just trigger corresponding sensitive switch 101, 102, 103 contact operating grip 1011, 1021, 1031, corresponding sensitive switch 101, 102, corresponding signal (reporting to the police or locking) is just connected and sent to 103 contacts, reach the sulfur hexafluoride gas density in the equipment such as monitoring and controlling electric switch, make the electric equipment trouble free service.If its density value has raise, force value also raises accordingly, be elevated to a certain degree, Baden's pipe 3 also produces accordingly to top offset, by temperature compensating element 4, make linking arm 13 to top offset, pass to connecting rod 7, connecting rod 7 passes to sector gear 61 and the signal trigger mechanism axle 121 of movement 6 successively, signal trigger mechanism axle 121 band moving cams 1221, 1222, 1223 rotate, while turning to a certain degree, cam 1221, 1222, 1223 just do not trigger corresponding sensitive switch 101, 102, 103, corresponding sensitive switch 101, 102, 103 contacts just disconnect, signal (reporting to the police or locking) is just removed.
By the cam of conditioning signal trigger mechanism, contact operating value that can the regulating density relay.
In order to improve the resistance to shock of sulfur hexafluoride gas density relay, density monitor can also arrange magnetic and help the formula electric contact, pointer with use in electric contact, pointer is fixed on movement, magnetic helps the formula electric contact to be fixed in housing, and this magnetic helps the formula electric contact can play the vibration damping effect, improves vibration resistance, in case of necessity, can also the output contact signal simultaneously.
The second sulfur hexafluoride gas density relay of the present invention, compare with the first, is mainly to have increased the control movement.Wherein, linking arm is connected with an end of control connection bar again, and the other end of control connection bar is connected with the initiating terminal of the sector gear of controlling movement; Signal trigger mechanism is fixed on the sector gear of controlling movement.When the gas density value changes, Bourdon tube and temperature compensating element produce displacement, and this displacement passes to sensitive switch by signal trigger mechanism, makes sensitive switch send corresponding signal, completes the function of density monitor.The pointer that this programme can make display part divide is more steady.
The third sulfur hexafluoride gas density relay of the present invention, with the second, compare, mainly to adopt novel control movement, the two ends that are characterized in the signal trigger mechanism axle are connected on the surface of the surface of the sector gear of controlling movement and the sector gear that shows movement, and can rotate around the sector shaft of controlling movement, purpose can not be rocked the signal trigger mechanism axle when work, improves resistance to shock.Signal trigger mechanism is fixed on the sector gear of controlling movement, when the gas density value changes, Bourdon tube and temperature compensating element produce displacement, and this displacement passes to sensitive switch by signal trigger mechanism, make sensitive switch send corresponding signal, complete the function of density monitor.
The 4th kind of sulfur hexafluoride gas density relay of the present invention, compare with the second, is mainly to adopt the two temperature compensating element,, shows part temperature compensating element and control section temperature compensating element.Wherein, the end seat is connected with the control temperature compensating element, controls temperature compensating element and is connected with linking arm, and linking arm is connected with an end of control connection bar again, and the other end of control connection bar is connected with the initiating terminal of the sector gear of controlling movement; Signal trigger mechanism is fixed on the sector gear of controlling movement.When the gas density value changes, Bourdon tube and temperature compensating element produce displacement, and this displacement passes to sensitive switch by signal trigger mechanism, makes sensitive switch send corresponding signal, completes the function of density monitor.The pointer that this programme can make display part divide is more steady, and temperature-compensating is more accurate, and precision is higher.
In a word, the form of control movement can also be various.
Sulfur hexafluoride gas density relay can also be designed to relatively independent signal controlling part and indicating value demonstration part in addition.Signal control part is divided and is comprised control pedestal, control end seat, controls Baden's pipe, controls temperature compensating element, controls movement and some sensitive switches as the gas density relay signal generator.An end of controlling Baden's pipe is connected to be controlled on pedestal, the other end is connected with an end of controlling temperature compensating element by the control end seat, sensitive switch is arranged in housing and with the contact operating grip, also comprises the signal trigger mechanism be fixed on the sector gear of controlling movement.When the gas density value changes, to control Bourdon tube and control temperature compensating element generation displacement, this displacement passes to sensitive switch by signal trigger mechanism, makes sensitive switch send corresponding signal, completes the function of density monitor;
The indicating value display part divides and comprises demonstration Baden pipe, displays temperature compensating element,, display base, display end seat, shows movement and pointer, an end that shows Baden's pipe is connected on display base, the other end is connected with an end of displays temperature compensating element, by the display end seat, the other end of displays temperature compensating element, is connected with the initiating terminal that shows movement, and pointer is connected with the central shaft that shows movement.
Can also be further, signal controlling partly is sealed in an air chamber, and it controls temperature compensating element is sulfur hexafluoride gas; Controlling pedestal and display base can unite two into one; Control Baden pipe in control section is managed as being arranged side by side with showing the demonstration Baden in part; In order to improve resistance to shock, the control Baden pipe in control section can be vertical setting with the demonstration Baden pipe in the demonstration part.Like this, control section and demonstration part are relatively independent, it has the following advantages: can accomplish that actual act value and pointer show value are just the same, and traditional pointer type density relay, owing to existing switch resistance and magnetic to help formula power, always there are certain deviation in its actual operating value and pointer show value, to the user, make troubles.
In sum, because the present invention has structurally done very large innovation, there is no the contact motion arm, there do not is cantilever beam, so, when the operation sulphur hexafloride circuit breaker, the vibration caused is just very little, and then can not cause that misoperation appears in sulfur hexafluoride gas density relay; With patent 201020190271.5, with 201010171798.8 disclosed gas density relays, compare simultaneously, also structurally to have done very large innovation, do not adopt signal trigger mechanism that displacement is amplified, then remove control signal generator (some sensitive switches).But adopt the sector gear through movement the displacement of Baden's pipe and temperature compensating element, and then by the signal trigger mechanism on the sector gear that is fixed on movement, then remove control signal generator (some sensitive switches), vibration just is not exaggerated like this.The advantages such as resistance to shock is high so the present invention's gas density relay has, the good electric property of signal generator, contact contact, long working life, guaranteed the system reliably working, be a kind of sulfur hexafluoride gas density relay of genuine performance brilliance, can be applied in well on various sulfur hexafluoride electrical equipments.
Above embodiment is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present invention, should be limited by each claim.
Claims (8)
1. a sulfur hexafluoride gas density relay, comprise housing, be arranged on pedestal, end seat, Baden's pipe, temperature compensating element, movement and some sensitive switches as signal generator in housing; The sector gear that described movement comprises the upper and lower clamping plate that be arranged in parallel, be connected across shaft gear and sector shaft between upper and lower clamping plate rotationally, be arranged on sector shaft and be connected with a joggle with shaft gear, the initiating terminal of this sector gear is connected with an end of described temperature compensating element with linking arm by connecting rod successively; The other end of described temperature compensating element is connected with an end of described Baden pipe by described end seat; The other end of described Baden pipe is connected on described pedestal; It is characterized in that, described gas density relay also comprises switch governor motion and a signal trigger mechanism identical with described sensitive switch quantity; Wherein,
Each described switch governor motion comprises a fixture, a rotating shaft rivet, a spring and a rotating part, one end of described fixture is connected with an end of described rotating part with spring by described rotating shaft rivet, the other end of described fixture is fixed on described pedestal or movement, so that described rotating shaft rivet is coaxial with described sector shaft, the other end of described rotating part is fixed described sensitive switch;
Described signal trigger mechanism comprises signal trigger mechanism axle and the cam identical with described sensitive switch quantity, described signal trigger mechanism axle is vertically fixed on the surface of described sector gear, and described cam is arranged on the signal trigger mechanism axle and is resisted against correspondingly on the contact lever of each sensitive switch;
When the gas density value changes, described Bourdon tube and temperature compensating element produce displacement, this displacement drives described sensitive switch by described sector gear and described signal trigger mechanism successively, makes described sensitive switch send corresponding signal, completes the function of gas density relay.
2. sulfur hexafluoride gas density relay according to claim 1, it is characterized in that, described rotating part is the L shaped crotch-shaped with the neck of hook and hook, and with its contact lever, the mode relative with described hook is fixed on the end of the neck of hook of described rotating part to described sensitive switch.
3. sulfur hexafluoride gas density relay according to claim 1, is characterized in that, described spring is butterfly spring or plain cushion spring.
4. sulfur hexafluoride gas density relay according to claim 1, is characterized in that, after the rotating part adjusting position of described sensitive switch by described switch governor motion, by switch auxiliary body, is fixed on described pedestal again.
5. sulfur hexafluoride gas density relay according to claim 1, is characterized in that, on described signal trigger mechanism axle with position-limit mechanism.
6. sulfur hexafluoride gas density relay according to claim 1, is characterized in that, described movement is also with damping mechanism.
7. a sulfur hexafluoride gas density relay, comprise housing, be arranged on pedestal, end seat, Baden's pipe, temperature compensating element, demonstration movement, control movement and some sensitive switches as signal generator in housing; One end of described Baden pipe is connected on described pedestal, and the other end is connected with an end of described temperature compensating element by described end seat; Described sensitive switch is arranged in described housing and with the contact operating grip; It is characterized in that, described gas density relay also comprises switch governor motion and a signal trigger mechanism identical with described sensitive switch quantity; Wherein,
Each described switch governor motion comprises a fixture, a rotating shaft rivet, a spring and a rotating part, one end of described fixture is connected with an end of described rotating part with spring by described rotating shaft rivet, the other end of described fixture is fixed on described pedestal or controls on movement, so that described rotating shaft rivet is coaxial with the sector shaft of described control movement, the other end of described rotating part is fixed described sensitive switch;
Described signal trigger mechanism comprises signal trigger mechanism axle and the cam identical with described sensitive switch quantity, described signal trigger mechanism axle is vertically fixed on the surface of sector gear of described control movement, and described cam is arranged on the signal trigger mechanism axle and is resisted against correspondingly on the contact lever of each sensitive switch;
When the gas density value changes, described Bourdon tube and temperature compensating element produce displacement, this displacement drives described sensitive switch by sector gear and the described signal trigger mechanism of described control movement successively, make described sensitive switch send corresponding signal, complete the function of gas density relay.
8. a sulfur hexafluoride gas density relay, comprise that relatively independent signal controlling part and indicating value show part; Described signal control part is divided and is comprised control pedestal, control end seat, controls Baden's pipe, controls temperature compensating element, controls movement and some sensitive switches as signal generator; One end of described control Baden pipe is connected on described control pedestal, and the other end is connected with an end of described control temperature compensating element by described control end seat; Described sensitive switch is arranged in described housing and with the contact operating grip; It is characterized in that, described gas density relay also comprises switch governor motion and a signal trigger mechanism identical with described sensitive switch quantity; Wherein,
Each described switch governor motion comprises a fixture, a rotating shaft rivet, a spring and a rotating part; One end of described fixture is connected with an end of described rotating part with spring by described rotating shaft rivet, the other end of described fixture is fixed on described control pedestal or controls on movement, so that described rotating shaft rivet is coaxial with the sector shaft of described control movement, the other end of described rotating part is fixed described sensitive switch;
Described signal trigger mechanism comprises signal trigger mechanism axle and the cam identical with described sensitive switch quantity, described signal trigger mechanism axle is vertically fixed on the surface of sector gear of described control movement, and described cam is arranged on the signal trigger mechanism axle and is resisted against correspondingly on the contact lever of each sensitive switch;
When the gas density value changes, described control Bourdon tube and control temperature compensating element produce displacement, this displacement passes to described sensitive switch by sector gear and the described signal trigger mechanism of described control movement successively, make described sensitive switch send corresponding signal, complete the function of density monitor;
Described indicating value display part divides and comprises demonstration Baden pipe, displays temperature compensating element,, display base, display end seat, shows movement and pointer, one end of described demonstration Baden pipe is connected on described display base, the other end is connected with an end of described displays temperature compensating element, by described display end seat, the other end of described displays temperature compensating element, is connected with the initiating terminal of described demonstration movement, and described pointer is connected with the central shaft of described demonstration movement.
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| CN108493048A (en) * | 2018-04-09 | 2018-09-04 | 国网安徽省电力有限公司检修分公司 | A kind of antivibration formula sulfur hexafluoride gas density relay |
| CN109839143A (en) * | 2017-11-28 | 2019-06-04 | 上海乐研电气科技有限公司 | Shock type electro connecting pressure gauge |
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| CN103456563B (en) | 2016-06-15 |
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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 200237 new No. 221 Building 1 B zone 1 room 123 Patentee before: Shanghai Roye Electronic Science & Technology Co., Ltd. |