CN103456563B - A kind of sulfur hexafluoride gas density relay - Google Patents
A kind of sulfur hexafluoride gas density relay Download PDFInfo
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- CN103456563B CN103456563B CN201310426146.8A CN201310426146A CN103456563B CN 103456563 B CN103456563 B CN 103456563B CN 201310426146 A CN201310426146 A CN 201310426146A CN 103456563 B CN103456563 B CN 103456563B
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Abstract
The invention discloses a kind of resistance to shock higher, and the contacts of signal generator and electric property are better, long working life, the sulfur hexafluoride gas density relay that precision is high, including housing, the pedestal being located in housing, holds switch actuating mechanism and signal trigger mechanism that seat, Baden's pipe, temperature compensating element, movement, some microswitch are identical with microswitch quantity. Each switch actuating mechanism includes fixture, rotating shaft rivet, spring and tumbler, one end of fixture is connected with one end of tumbler by rotating shaft rivet and spring, the other end of fixture is fixed on pedestal, so that rotating shaft rivet is coaxial with sector shaft, the other end of tumbler fixes microswitch; Signal trigger mechanism includes signal trigger mechanism axle and some cams, and signal trigger mechanism axle is vertically fixed on the surface of sector gear, and cam is arranged on signal trigger mechanism axle and is resisted against correspondingly on the contact lever of each microswitch.
Description
Technical field
The present invention relates to a kind of sulfur hexafluoride gas density relay.
Background technology
At present, it is used for the gas density relay without oil type that the commonly used contact of sulfur hexafluoride gas density is microswitch monitoring in sulfur hexafluoride electrical equipment, such as Chinese patent or patent application 200510110648.5, 200520045890.4, 200520045891.9, 200520115321.2, 200810201462.4, 200910195174.7, 201020190271.5 with gas density relay (as depicted in figs. 1 and 2) disclosed in 201010171798.8 generally comprises graduated disc 1, pointer 2, Baden's pipe 3, temperature compensating element 4, pedestal 5, movement 6 with display enlarger, connecting rod 7, housing 8, joint 9, microswitch 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, fixing plate 20, electric wire 21 and sulfur hexafluoride gas conveying pipe 22, wherein, joint 9, junction block 15, watch crystal 16, case 17 and pedestal 5 are separately fixed on housing 8. movement 6 and fixing plate 20 are separately mounted on pedestal 5, and pointer 2 and graduated disc 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 one end of temperature compensating element 4 by holding seat 14, the other end of temperature compensating element 4 is connected with linking arm 13, and one end of linking arm 13 is connected with one end of connecting rod 7, and the other end of connecting rod 7 is connected with movement 6.Contact motion arm 12 is the extension of linking arm 13, and contact motion arm 12 is fixed with regulating part 111,112,113. Microswitch 101,102,103 is respectively welded on printed circuit board 18, and printed circuit board 18 is arranged on fixing plate 20, and fixing plate 20 is in turn mounted on pedestal 5. Microswitch 101,102,103 is fixed on the lower section of regulating part 111,112,113 correspondingly. Each microswitch is respectively equipped with operation handle 1011,1021,1031. Location-plate 19 rear end is fixed on movement 6, and front end extends to the lower section of the end seat 14 being connected by Baden's pipe 3 with temperature compensating element 4. The contact of microswitch 101,102,103 is connected to junction block 15 by electric wire 21 from printed circuit board 18, and junction block 15 is fixed on housing 8.
Although the advantage that the microswitch that these gas density relays above-mentioned adopt has good electric property, but owing to the length of contact motion arm 12 is longer, and be a cantilever beam, when operating sulphur hexafloride circuit breaker, cause contact motion arm 12 to vibrate very big, and then cause sulfur hexafluoride gas density relay that misoperation occurs, even occur damaging microswitch, losing performance completely, resistance to shock is poor in a word, it is difficult to ensure system reliably working.
Displacement amplifying mechanism is also included at gas density relay disclosed in patent 201020190271.5 and 201010171798.8 (see Fig. 3 and Fig. 4), the initiating terminal of this displacement amplifying mechanism is connected with the other end of temperature compensating element, and amplify end and drive the contact operation handle of microswitch, make the contact in microswitch or disconnection; When gas density value changes, Baden's pipe and temperature compensating element produce displacement, and this is displaced through after displacement amplifying mechanism amplifies and passes to microswitch, makes microswitch send corresponding signal, completes the function of density monitor. But, when sulphur hexafloride circuit breaker carries out breaking-closing operating, Baden's pipe and temperature compensating element can be produced vibration, this vibration can cause Baden's pipe and temperature compensating element to be subjected to displacement, this displacement passes to microswitch after amplifying also by displacement amplifying mechanism, makes microswitch send corresponding signal. Thus can produce misoperation, say, that its resistance to shock is bad, it is impossible to ensure 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. Namely, when the blowing pressure (density) is below alarm pressure value, it is impossible to bear the impact test of 50g, 11ms, now can there is misoperation in locking contact. Such as: the density monitor of 0.6/0.52/0.5, when gas pressure (density) drops to actuation of an alarm point, now carrying out the impact test of 50g, 11ms, can there is misoperation in locking contact, switch is carried out locking, it is impossible to meet the reclosing requirement of sulphur hexafloride circuit breaker. And the problem of patent 200520115321.2 is similar to patent 201010171798.8, also it is can be displaced through after displacement amplifying mechanism amplifies pass to microswitch what vibration caused (namely pass to control machine mandrel by control sector gear, microswitch is passed to) then through controlling machine mandrel, so greatly amplified the displacement that vibration causes, be equivalent to make vibration become more severe. Very big owing to vibrating when sulphur hexafloride circuit breaker breaking-closing operating, it is accordingly required in particular to the better gas density relay of resistance to shock, these gas density relays above-mentioned then can not be dealt with.
Additionally, the disclosed a kind of gas density relay of patent 200810201462.4 (see Fig. 5), although contact also uses microswitch, it is also provided with the regulating part 141～143 corresponding with microswitch and contact operation axle 16, wherein, one end of contact operation axle 16 is connected on the sector shaft 24 of movement 2 and rotates with this sector shaft 24, on this contact operation axle 16, compartment of terrain radially offers the threaded perforations corresponding with microswitch 91～93 along its length, regulating part 141～143 is plugged in threaded perforations correspondingly and its end is resisted against on the motion arm of microswitch 91～93. rotated by the contact operation axle 16 being fixed on sector shaft 24, make the regulating part 141～143 being fixed on this contact operation axle 16 drive microswitch 91～93 action. owing to the rotational angle of sector shaft 24 is only small, the precision of product is made to reduce. more seriously owing to the actuating length of the motion arm of microswitch is short, and regulating part 141～143 employing is regulate screw. when Baden's pipe 6 moves, rotate with the sector shaft 24 of movement 2, adjustment screw turns is made to encounter the motion arm of microswitch, drive motion arm by the movable contact compressed switch, when the end face turning to adjustment screw is vertical with the motion arm of microswitch, adjustment screw is made to block and can not have rotated, so being difficulty with the density monitor of the gamut of-0.1～0.9MPa, particularly it is difficult to be initiated with the display of-0.1MPa, just cannot show during evacuation, it is difficult to popularization and application, so being highly desirable to innovation.
Summary of the invention
It is an object of the invention to overcome the defect of prior art, it is provided that a kind of sulfur hexafluoride gas density relay, its resistance to shock is higher, and the contacts of signal generator and electric property are better, and long working life, precision is high.
The first technical scheme realizing above-mentioned purpose is: a kind of sulfur hexafluoride gas density relay, including housing, the pedestal being arranged in housing, end seat, Baden's pipe, temperature compensating element, movement and some microswitch as signal generator; Described movement includes the upper and lower clamping plate be arrangeding in parallel, the shaft gear being connected across between upper and lower clamping plate rotationally and sector shaft, is arranged on sector shaft and engages, with shaft gear, the sector gear being connected, and the initiating terminal of this sector gear passes sequentially through connecting rod and linking arm and is connected with one end of described temperature compensating element; The other end of described temperature compensating element is connected with one 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 includes the switch actuating mechanism identical with described microswitch quantity and a signal trigger mechanism; Wherein,
Each described switch actuating mechanism includes a fixture, a rotating shaft rivet, a spring and a tumbler;
One end of described fixture is connected with one end of described tumbler by described rotating shaft rivet and spring, 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 tumbler fixes described microswitch;
Described signal trigger mechanism includes signal trigger mechanism axle and the cam identical with described microswitch quantity, described signal trigger mechanism axle is vertically fixed on the surface of described sector gear, and described cam is arranged on signal trigger mechanism axle and is resisted against on the contact lever of each microswitch correspondingly;
When gas density value changes, described Baden pipe and temperature compensating element produce displacement, this displacement passes sequentially through described sector gear and described signal trigger mechanism drives described microswitch, makes described microswitch send corresponding signal, completes the function of gas density relay.
Above-mentioned sulfur hexafluoride gas density relay, wherein, described tumbler is the L-shaped crotch-shaped with the neck of hook and hook, and described microswitch is fixed on the end of the neck of hook of described tumbler in the way of its contact lever is relative with described hook.
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, described microswitch is by being fixed on described pedestal again through switch auxiliary body after the tumbler adjusting position of described switch actuating mechanism.
Above-mentioned sulfur hexafluoride gas density relay, wherein, with position-limit mechanism on described signal trigger mechanism axle.
Above-mentioned sulfur hexafluoride gas density relay, wherein, described movement is also with damping mechanism.
The second technical scheme realizing above-mentioned purpose is: a kind of sulfur hexafluoride gas density relay, including housing, the pedestal being arranged in housing, end seat, Baden's pipe, temperature compensating element, display movement, controls movement and some microswitch as signal generator; One end of described Baden pipe is connected on described pedestal, and the other end is connected with one end of described temperature compensating element by described end seat; Described microswitch is arranged in described housing and operates handle with contact; Described gas density relay also includes the switch actuating mechanism identical with described microswitch quantity and a signal trigger mechanism; Wherein,
Each described switch actuating mechanism includes a fixture, a rotating shaft rivet, a spring and a tumbler;
One end of described fixture is connected with one end of described tumbler by described rotating shaft rivet and spring, 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 tumbler fixes described microswitch; Described signal trigger mechanism includes signal trigger mechanism axle and the cam identical with described microswitch quantity, described signal trigger mechanism axle is vertically fixed on the surface of the sector gear of described control movement, and described cam is arranged on signal trigger mechanism axle and is resisted against on the contact lever of each microswitch correspondingly;
When gas density value changes, described Baden pipe and temperature compensating element produce displacement, this displacement passes sequentially through sector gear and the described signal trigger mechanism described microswitch of driving of described control movement, make described microswitch send corresponding signal, complete the function of gas density relay.
The third technical scheme realizing above-mentioned purpose is: a kind of sulfur hexafluoride gas density relay, including relatively independent signal control portion and indicating value display part, described signal control portion includes controlling pedestal, control end seat, control Baden's pipe, control temperature compensating element, control movement and some microswitch as signal generator, one end of described control Baden pipe is connected on described control pedestal, the other end is connected with one end of described control temperature compensating element by described control end seat, described microswitch is arranged in described housing and operates handle with contact, described gas density relay also includes the switch actuating mechanism identical with described microswitch quantity and a signal trigger mechanism, wherein,
Each described switch actuating mechanism includes a fixture, a rotating shaft rivet, a spring and a tumbler;
One end of described fixture is connected with one end of described tumbler by described rotating shaft rivet and spring, 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 tumbler fixes described microswitch; Described signal trigger mechanism includes signal trigger mechanism axle and the cam identical with described microswitch quantity, and described signal trigger mechanism axle is vertically fixed on the surface of the sector gear of described control movement; Described cam is arranged on signal trigger mechanism axle and is resisted against on the contact lever of each microswitch correspondingly;
When gas density value changes, described control Baden pipe and control temperature compensating element produce displacement, this displacement passes sequentially through the sector gear of described control movement and described signal trigger mechanism passes to described microswitch, make described microswitch send corresponding signal, complete the function of density monitor;
Described indicating value display part divides and includes display Baden pipe, displays temperature compensating element, display base, display end seat, display movement and pointer, one end of described display Baden pipe is connected on described display base, the other end is connected with one 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 display movement, and described pointer is connected with the central shaft of described display movement.
The technical scheme of the sulfur hexafluoride gas density relay of the present invention, prior art is compared has following clear advantage and feature:
When gas density value changes, Baden's pipe and temperature compensating element produce displacement, and this sector gear being displaced through movement and signal trigger mechanism pass to microswitch, make microswitch send corresponding signal, complete the function of density monitor. Compared with gas density device disclosed in patent 200520045890.4,200520045891.9 and 200910195174.7, owing to there is no contact motion arm, it is absent from cantilever beam, so when operating sulphur hexafloride circuit breaker, the vibration caused is just only small, and then sulfur hexafluoride gas density relay will not be caused misoperation occur; Simultaneously compared with gas density device disclosed in patent 201020190271.5 and 201010171798.8, it does not have adopt signal enlarger after displacement equations, then remove control signal generator, so vibrate and be not just exaggerated. Gas density relay is made to have the advantages such as resistance to shock height, the good electric property of signal generator, good, the long working life of contacts, ensure that system reliably working, it is the sulfur hexafluoride gas density relay of a kind of genuine performance brilliance, it is possible to be applied in well on various sulfur hexafluoride electrical equipment.
Further, owing to the initiating terminal of the sector gear of movement is connected by connecting rod and linking arm are fixing with the other end of temperature compensating element, or the initiating terminal of the sector gear of movement is directly fixed with the other end of temperature compensating element and is connected; The contact operation handle of signal trigger mechanism and microswitch is correspondingly arranged; Movement with damping mechanism, also can also improve resistance to shock further.
It addition, the width of Baden's pipe is 14～60mm; Temperature compensating element is the compensation Baden pipe of bimetallic material or the airtight gas being filled with temperature-compensating. When temperature compensating element be airtight be filled with gas compensate Baden's pipe or signal control portion be sealed in one be filled with in the air chamber of sulfur hexafluoride gas (it controls temperature compensating element is sulfur hexafluoride gas) time, compensate Baden's pipe or air chamber can pass through connecting tube and connect with the temperature-sensitive bag gas circuit being located at outside housing. During use, temperature-sensitive bag and tested source of the gas are in same environment, density monitor is enable to accurately reflect the temperature of gas of sulfur hexafluoride equipment of measured or monitoring, can the gas density of sulfur hexafluoride equipment monitored of actual response, it is greatly improved the range of application of this high antivibration, high accuracy sulfur hexafluoride gas density relay, it is possible to be applied in well on sulfur hexafluoride electrical equipment.
The sulfur hexafluoride gas density relay of the present invention can also is that sulfur hexafluoride gas mixture density monitor or compression gas density relay.
Accompanying drawing explanation
Fig. 1 is the structural representation of the first pointer sulfur hexafluoride gas density relay of prior art;
Fig. 2 is the partial side view of Fig. 1;
Fig. 3 is the structural representation of the second pointer sulfur hexafluoride gas density relay of prior art;
Fig. 4 is the partial side view of Fig. 3;
Fig. 5 is the partial perspective view of the third pointer sulfur hexafluoride gas density relay of prior art;
Fig. 6 is the partial perspective view of the sulfur hexafluoride gas density relay of the present invention;
Fig. 7 is the partial side view of Fig. 6;
Fig. 8 is the partial elevation view of the sulfur hexafluoride gas density relay of the present invention;
Fig. 9 is the structural representation of the governor motion of the microswitch in the sulfur hexafluoride gas density relay of the present invention.
Detailed description of the invention
In order to enable better technical scheme to be understood, it is described in detail below by specific embodiment and in conjunction with accompanying drawing.
Refer to Fig. 6, Fig. 7, Fig. 8 and Fig. 9, the first sulfur hexafluoride gas density relay of the present invention, including Baden's pipe 3, temperature compensating element 4 (present case employing bimetallic material), pedestal 5, movement 6, connecting rod 7, housing, joint, three microswitch 101, 102, 103, three switch actuating mechanism 111, 112, 113, signal trigger mechanism 12, linking arm 13, end seat 14, junction block, watch crystal, case, electric wire, the fixing auxiliary body 24 of switch and position-limit mechanism 25, the present embodiment is with three microswitch 101, 102, 103 as gas density relay signal generator, this gas density relay is also with being used for showing graduated disc and the pointer of 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 elects 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 one 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 one 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 made up 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, the movement lower plate 66 that movement 6 includes machine mandrel 60, hairspring 64, movement train wheel bridge 65 be arranged in parallel with movement train wheel bridge 65, the central gear 63 being connected across between movement train wheel bridge 65 and movement lower plate 66 rotationally and engage the sector gear 61 being connected with this central gear 63; Rotate on the surface of the sector gear 61 being vertically connected on movement 6 of signal trigger mechanism axle 121 and with this sector gear 61, three cams 1221,1222,1223 are arranged on signal trigger mechanism axle 121 along the interval, length direction ground of signal trigger mechanism axle 121, and these three cams 1221,1222,1223 are resisted against on the contact lever 1011,1021,1031 of microswitch 101,102,103 correspondingly. Movement 6 can also install damping mechanism in one end of sector shaft 610.
Three switch actuating mechanism 111,112,113 include tumbler 1114,1124,1134, fixture 1111,1121,1131, spring 1112,1122,1132 and rotating shaft rivet 1113,1123,1133 (see Fig. 9), wherein, tumbler 1114,1124,1134 is the L-shaped crotch-shaped including shank and hook, and the head of the hook of this tumbler offers a connecting hole;Fixture 1111,1121,1131 is 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; Being provided with one of connecting hole and connected by rotating shaft rivet 1113,1123,1133 and spring 1112,1122,1132 of the hook head of tumbler 1114,1124,1134 and fixture 1111,1121,1131.
Three switch actuating mechanism 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 actuating mechanism 111,112,113 is all coaxial with sector shaft 610; Three fine motion microswitch 101,102,103 are fixed on the outer end of the shank of the tumbler 1114,1124,1134 of three switch actuating mechanism 111,112,113 correspondingly in the way of its contact lever 1011,1021,1031 is relative with hook, for regulating the position of microswitch 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 microswitch 101,102,103 according to gas density value and force value, make the contact in microswitch 101,102,103 or disconnection; The contact of microswitch 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 invade from mechanical damage and dirt, rainwater by protective housing 8 internal mechanism. One end of deferent is connected with pedestal 5, and reliably seals; The other end of deferent is connected with joint 9, and reliably seals. In order to improve the resistance to shock of density monitor further, signal trigger mechanism axle 121 is also with position-limit mechanism 25, the other end of signal trigger mechanism axle 121 is played position-limiting action by this position-limit mechanism 25, it is prevented that signal trigger mechanism axle 121 rocks because vibration causes, thus improving resistance to shock.
Graduated disc 1 is fixed on pedestal 5, and pointer 2 is fixed on the front end of machine mandrel 60.
The fixing auxiliary body 24 of switch is fixed on pedestal 5, and the form of the fixing auxiliary body 24 of switch is unrestricted, it is possible to variation. After the contact working value of density monitor regulates, need microswitch is fixed thoroughly, specifically, it is fixed on pedestal 5 by switching the tumbler 1114,1124,1134 of 24 three switch actuating mechanism 111,112,113 of fixing auxiliary body, microswitch is made to fix thoroughly, it is not shifted over by any vibration, thus is greatly improved the resistance to shock of relay, it is ensured that system reliably working. Microswitch 101,102,103 can adopt normal opened contact, it would however also be possible to employ normally closed contact, and its installation site is not affected by restriction.
The operation principle of the sulfur hexafluoride gas density relay of the present invention is based on flexible member Baden pipe 3, utilizes temperature compensating element 4 that the pressure and temperature of change is modified, the change of reaction sulfur hexafluoride gas density. Namely under the pressure effect of measured medium sulfur hexafluoride gas, effect because of temperature compensating element 4, the change of its density value, force value also changes accordingly, the end forcing Baden's pipe 3 produces corresponding elastic deformation displacement, by means of temperature compensating element 4 and connecting rod 7, pass to sector gear 61 and signal trigger mechanism axle 121 successively, and then pass to three cams 1221,1222,1223.Three cams 1221,1222,1223 drive the contact operation handle 1011,1021,1031 of microswitch 101,102,103 according to gas density value and force value, make the contact in microswitch 101,102,103 or disconnection and send corresponding signal, completing the function of density monitor. if gas leakage, its density value drops to a certain degree (reaching to report to the police or locking value), Baden's pipe 3 produces corresponding 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, when turning to a certain degree, three cams 1221, 1222, 1223 just trigger corresponding microswitch 101, 102, the contact operation handle 1011 of 103, 1021, 1031, corresponding microswitch 101, 102, 103 contacts are switched on and send corresponding signal (reporting to the police or locking), reach the sulfur hexafluoride gas density monitoring and controlling in the equipment such as electric switch, make electrical equipment trouble free service. if its density value increases, force value also raises accordingly, it is increased to a certain degree, Baden's pipe 3 also produces to shift up accordingly, by temperature compensating element 4, linking arm 13 is made to shift up, 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 cam 1221, 1222, 1223 rotate, when turning to a certain degree, cam 1221, 1222, 1223 just do not trigger corresponding microswitch 101, 102, 103, corresponding microswitch 101, 102, 103 contacts just disconnect, signal (is reported to the police or locking) and is just released.
By regulating the cam of signal trigger mechanism, it is possible to regulate the contact working value of density monitor.
In order to improve the resistance to shock of sulfur hexafluoride gas density relay, density monitor can also arrange magnetic and help formula electric contact, pointer with use in electric contact, pointer is fixed on movement, magnetic helps formula electric contact to be fixed in housing, and this magnetic helps formula electric contact can play vibration damping effect, improves vibration resistance, if desired, it is also possible to output contact signal simultaneously.
The second sulfur hexafluoride gas density relay of the present invention, compared with the first, mainly adds control movement. Wherein, linking arm is connected with the one end controlling connecting rod again, and the initiating terminal of the other end and the sector gear controlling movement that control connecting rod is connected; Signal trigger mechanism is fixed on the sector gear controlling movement. When gas density value changes, Baden's pipe and temperature compensating element produce displacement, and this is displaced through signal trigger mechanism and passes to microswitch, makes microswitch send corresponding signal, completes the function of density monitor. This programme can make the pointer that display part divides more steady.
The third sulfur hexafluoride gas density relay of the present invention, compared with the second, mainly adopt novel control movement, it is characterized in that the two ends of signal trigger mechanism axle are connected on the surface of the surface of the sector gear controlling movement and the sector gear of display movement, and can rotate around the sector shaft controlling movement, purpose makes signal trigger mechanism axle operationally will not rock, and improves resistance to shock. Signal trigger mechanism is fixed on the sector gear controlling movement, when gas density value changes, Baden's pipe and temperature compensating element produce displacement, and this is displaced through signal trigger mechanism and passes to microswitch, make microswitch send corresponding signal, complete the function of density monitor.
The 4th kind of sulfur hexafluoride gas density relay of the present invention, compared with the second, mainly adopts two temperature compensating element, namely shows part temperature compensating element and control portion temperature compensating element. Wherein, end seat is connected with controlling temperature compensating element, controls temperature compensating element and is connected with linking arm, and linking arm is connected with the one end controlling connecting rod again, and the initiating terminal of the other end and the sector gear controlling movement that control connecting rod is connected; Signal trigger mechanism is fixed on the sector gear controlling movement. When gas density value changes, Baden's pipe and temperature compensating element produce displacement, and this is displaced through signal trigger mechanism and passes to microswitch, makes microswitch send corresponding signal, completes the function of density monitor. This programme can make the pointer that display part divides more steady, and temperature-compensating is more accurate, and precision is higher.
In a word, the form controlling movement can also be various.
Additionally sulfur hexafluoride gas density relay is also designed to relatively independent signal control portion and indicating value display part. Signal control portion includes controlling pedestal, controls end seat, controls Baden's pipe, controls temperature compensating element, controls movement and some microswitch as gas density relay signal generator. The one end controlling Baden's pipe is connected on control pedestal, the other end is connected with the one end controlling temperature compensating element by controlling end seat, microswitch is arranged in housing and operates handle with contact, also includes the signal trigger mechanism being fixed on the sector gear controlling movement. When gas density value changes, controlling Baden's pipe and control temperature compensating element generation displacement, this is displaced through signal trigger mechanism and passes to microswitch, makes microswitch send corresponding signal, completes the function of density monitor;
Indicating value display part divides and includes display Baden pipe, displays temperature compensating element, display base, display end seat, display movement and pointer, one end of display Baden pipe is connected on display base, the other end is connected with one end of displays temperature compensating element, by display end seat, the other end of displays temperature compensating element, is connected with the initiating terminal of display movement, and pointer is connected with the central shaft of display movement.
Can also further, signal control portion is sealed in an air chamber, and it controls temperature compensating element is sulfur hexafluoride gas; Control pedestal and display base can unite two into one; The Baden's pipe that controls in control part is managed as being arranged side by side with the display Baden in display part; In order to improve resistance to shock, the Baden's pipe that controls in control part can with the display Baden pipe in display part for being vertically arranged. So, control part and display part is relatively independent, it have the advantage that can accomplish that actual act value and pointer show value are just the same, and traditional pointer type density relay, formula power is helped owing to there is switch resistance and magnetic, its actual working value and pointer show value are constantly present certain deviation, make troubles to user.
In sum, structurally done very big innovation due to the present invention, namely there is no contact motion arm, it is absent from cantilever beam, so when operating sulphur hexafloride circuit breaker, the vibration caused is just only small, and then sulfur hexafluoride gas density relay will not be caused misoperation occur; Simultaneously compared with gas density relay disclosed in patent 201020190271.5 and 201010171798.8, also it is structurally done very big innovation, namely do not adopt signal trigger mechanism displacement equations, then remove control signal generator (some microswitch).But adopt and the sector gear through movement of the displacement with temperature compensating element is managed by Baden, then again through the signal trigger mechanism on the sector gear being fixed on movement, removing control signal generator (some microswitch) again, so vibration is not just exaggerated. So the gas density relay of the present invention has the advantages such as resistance to shock height, the good electric property of signal generator, good, the long working life of contacts, ensure that system reliably working, it is the sulfur hexafluoride gas density relay of a kind of genuine performance brilliance, it is possible to be applied in well on various sulfur hexafluoride electrical equipment.
Above example 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, various conversion or modification can also be made, therefore all equivalent technical schemes also should belong to scope of the invention, should be limited by each claim.
Claims (8)
1. a sulfur hexafluoride gas density relay, including housing, the pedestal being arranged in housing, end seat, Baden's pipe, temperature compensating element, movement and some microswitch as signal generator; Described movement includes the upper and lower clamping plate be arrangeding in parallel, the shaft gear being connected across between upper and lower clamping plate rotationally and sector shaft, is arranged on sector shaft and engages, with shaft gear, the sector gear being connected, and the initiating terminal of this sector gear passes sequentially through connecting rod and linking arm and is connected with one end of described temperature compensating element; The other end of described temperature compensating element is connected with one 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 includes the switch actuating mechanism identical with described microswitch quantity and a signal trigger mechanism; Wherein,
Each described switch actuating mechanism includes a fixture, a rotating shaft rivet, a spring and a tumbler, one end of described fixture is connected with one end of described tumbler by described rotating shaft rivet and spring, 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 tumbler fixes described microswitch;
Described signal trigger mechanism includes signal trigger mechanism axle and the cam identical with described microswitch quantity, described signal trigger mechanism axle is vertically fixed on the surface of described sector gear, and described cam is arranged on signal trigger mechanism axle and is resisted against on the contact lever of each microswitch correspondingly;
When gas density value changes, Baden's pipe and temperature compensating element produce displacement, this displacement passes sequentially through described sector gear and described signal trigger mechanism drives described microswitch, makes described microswitch 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 tumbler is the L-shaped crotch-shaped with the neck of hook and hook, and described microswitch is fixed on the end of the neck of hook of described tumbler in the way of its contact lever is relative with described hook.
3. sulfur hexafluoride gas density relay according to claim 1, it is characterised in that described spring is butterfly spring or plain cushion spring.
4. sulfur hexafluoride gas density relay according to claim 1, it is characterised in that described microswitch is by being fixed on described pedestal again through switch auxiliary body after the tumbler adjusting position of described switch actuating mechanism.
5. sulfur hexafluoride gas density relay according to claim 1, it is characterised in that with position-limit mechanism on described signal trigger mechanism axle.
6. sulfur hexafluoride gas density relay according to claim 1, it is characterised in that described movement is also with damping mechanism.
7. a sulfur hexafluoride gas density relay, including housing, the pedestal being arranged in housing, end seat, Baden's pipe, temperature compensating element, display movement, controls movement and some microswitch as signal generator; One end of described Baden pipe is connected on described pedestal, and the other end is connected with one end of described temperature compensating element by described end seat; Described microswitch is arranged in described housing and operates handle with contact; It is characterized in that, described gas density relay also includes the switch actuating mechanism identical with described microswitch quantity and a signal trigger mechanism; Wherein,
Each described switch actuating mechanism includes a fixture, a rotating shaft rivet, a spring and a tumbler, one end of described fixture is connected with one end of described tumbler by described rotating shaft rivet and spring, 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 tumbler fixes described microswitch;
Described signal trigger mechanism includes signal trigger mechanism axle and the cam identical with described microswitch quantity, described signal trigger mechanism axle is vertically fixed on the surface of the sector gear of described control movement, and described cam is arranged on signal trigger mechanism axle and is resisted against on the contact lever of each microswitch correspondingly;
When gas density value changes, Baden's pipe and temperature compensating element produce displacement, this displacement passes sequentially through sector gear and the described signal trigger mechanism described microswitch of driving of described control movement, makes described microswitch send corresponding signal, completes the function of gas density relay.
8. a sulfur hexafluoride gas density relay, including relatively independent signal control portion and indicating value display part; Described signal control portion includes controlling pedestal, controls end seat, controls Baden's pipe, controls temperature compensating element, controls movement and some microswitch as signal generator; One end of described control Baden pipe is connected on described control pedestal, and the other end is connected with one end of described control temperature compensating element by described control end seat; Described microswitch is arranged in housing and operates handle with contact; It is characterized in that, described gas density relay also includes the switch actuating mechanism identical with described microswitch quantity and a signal trigger mechanism; Wherein,
Each described switch actuating mechanism includes a fixture, a rotating shaft rivet, a spring and a tumbler; One end of described fixture is connected with one end of described tumbler by described rotating shaft rivet and spring, 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 tumbler fixes described microswitch;
Described signal trigger mechanism includes signal trigger mechanism axle and the cam identical with described microswitch quantity, described signal trigger mechanism axle is vertically fixed on the surface of the sector gear of described control movement, and described cam is arranged on signal trigger mechanism axle and is resisted against on the contact lever of each microswitch correspondingly;
When gas density value changes, control Baden's pipe and control temperature compensating element generation displacement, this displacement passes sequentially through the sector gear of described control movement and described signal trigger mechanism passes to described microswitch, make described microswitch send corresponding signal, complete the function of density monitor;
Described indicating value display part divides and includes display Baden pipe, displays temperature compensating element, display base, display end seat, display movement and pointer, one end of described display Baden pipe is connected on described display base, the other end is connected with one 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 display movement, and described pointer is connected with the central shaft of described display movement.
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| CN104299844B (en) * | 2014-10-21 | 2016-08-24 | 上海乐研电气科技有限公司 | A kind of wide range 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 |
| CN108493048B (en) * | 2018-04-09 | 2024-04-09 | 国网安徽省电力有限公司超高压分公司 | Vibration-resistant sulfur hexafluoride gas density relay |
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| CN2809852Y (en) * | 2005-07-24 | 2006-08-23 | 秦迎祥 | Pressure controller |
| CN200939893Y (en) * | 2006-08-28 | 2007-08-29 | 刘春雷 | Shift contactor |
| 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 |
| CN203521303U (en) * | 2013-09-18 | 2014-04-02 | 上海乐研电气科技有限公司 | Sulfur hexafluoride gas density relay |
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| JPH09320421A (en) * | 1996-05-30 | 1997-12-12 | Hochiki Corp | Delay type pressure switching device |
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|---|---|---|---|---|
| CN2809852Y (en) * | 2005-07-24 | 2006-08-23 | 秦迎祥 | Pressure controller |
| CN200939893Y (en) * | 2006-08-28 | 2007-08-29 | 刘春雷 | Shift contactor |
| 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 |
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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. |