CN203674073U - Sulfur hexafluoride gas density relay - Google Patents

Abstract

The utility model discloses a sulfur hexafluoride gas density relay having advantages of high vibration-resistant performance, long service lifetime, high accuracy, and good contact performance and electric performance of signal generator. The sulfur hexafluoride gas density relay comprises a housing; a pedestal, a terminal seat, a Bourdon tube, a temperature compensation element, a movement, a signal adjusting mechanism, and a plurality of microswitches, which are disposed in the housing. Anti-error operation mechanisms corresponding to contact operation arms of the microswitches are also provided. Each of the anti-error operation mechanisms comprises a fixing seat, a rotating shaft, a rotating member, and a poking rod, and the poking rod abuts against the contact operation arm of each of the microswitches correspondingly. When the gas density relay is under the impact condition or the vibration condition, the poking rods of the anti-error operation mechanisms can be swung by the rotating members to poke the contact operation arms of the microswitches toward the pressure build-up direction, and then the signal generator can be far away from the position of the misoperation, and therefore the signal adjusting mechanism cannot trigger the signal generator accidentally, when the gas density is normal, and the vibration-resistant performance of the relay can be improved greatly.

Description

A kind of sulfur hexafluoride gas density relay

Technical field

The utility model 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 oil type gas density relay, as Chinese patent or patent application 200510110648.5, 200520045890.4, 200520045891.9, 200520115321.2, 200610023139.3, 200610118940.6, 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 one 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 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, is 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.On each sensitive switch, be respectively equipped with operating grip 1011,1021,1031.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, in the time of operation sulphur hexafloride circuit breaker, cause contact motion arm 12 to vibrate very large, and then cause that misoperation appears in sulfur hexafluoride gas density relay, even there is damaging sensitive switch, lost performance completely, resistance to shock is poor in a word, is difficult to guarantee system reliably working.

See Fig. 3 and Fig. 4 at patent 200610023139.3,200610118940.6() in disclosed gas density relay, the sensitive switch adopting has advantages of good electric property, but because the length of contact motion arm 16 is longer, and be a cantilever beam, in the time of operation sulphur hexafloride circuit breaker, cause contact motion arm 16 to vibrate very large, and then cause that misoperation appears in sulfur hexafluoride gas density relay, that is to say that its resistance to shock is bad, can not guarantee 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) below alarm pressure value time, the shock test that can not bear 50g, 11ms, can there is misoperation in locking contact now.For example: the density monitor of 0.6/0.52/0.5, in the time that gas pressure (density) drops to actuation of an alarm point, now carry out the shock test of 50g, 11ms, can there is misoperation in locking contact, switch is carried out to locking, can not meet the reclosing requirement of sulphur hexafloride circuit breaker.Its resistance to shock is also undesirable in a word, is difficult to guarantee system reliably working.

See Fig. 5 and Fig. 6 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, hold and amplify the contact operating grip that drives sensitive switch, the contact on sensitive switch is switched on or switched off; When gas density value changes, Baden's pipe 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.But, 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 like this misoperation, that is to say that its resistance to shock is bad, can not guarantee 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) below alarm pressure value time, the shock test that can not bear 50g, 11ms, can there is misoperation in locking contact now.For example: the density monitor of 0.6/0.52/0.5, in the time that gas pressure (density) drops to actuation of an alarm point, now carry out the shock test of 50g, 11ms, can there is misoperation in locking contact, switch is 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, also be vibration can be caused displacement pass to sensitive switch after amplifying by displacement amplifying mechanism and (pass to controller mandrel by controlling sector gear, pass to sensitive switch through 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. 7) 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 in the rotating shaft 24 of sector gear of movement 2 and rotates with the rotating shaft 24 of this sector gear, on this contact operating axis 16, compartment of terrain radially offers the threaded perforations corresponding with sensitive switch 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 sensitive switch 91～93.Rotate by the contact operating axis 16 being fixed in the rotating shaft 24 of sector gear, the regulating part 141～143 that makes to be fixed on this contact operating axis 16 drives sensitive switches 91～93 actions.Because the rotational angle of the rotating shaft 24 of sector gear is very little, the precision of product is reduced.More seriously because the actuating length of the motion arm of sensitive switch is short, be adjustment screw and regulating part 141～143 adopts.In the time that 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, when turning in the situation that the end face of adjustment screw and the motion arm of sensitive switch are vertical, adjustment screw is blocked and can not have been rotated, so be difficult to the density monitor of the gamut of realizing-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 purpose of this utility model is to overcome the defect of prior art, and a kind of sulfur hexafluoride gas density relay is provided, and 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.

A kind of technical scheme that realizes above-mentioned purpose is: a kind of high antivibration sulfur hexafluoride gas density relay, comprise housing, be arranged on pedestal, end seat, Baden's pipe, temperature compensating element, movement, Signal Regulation mechanism and some sensitive switches as signal generator in housing, described end seat is connected with one end of described Baden pipe, the other end of described Baden pipe is connected on described pedestal, and described sensitive switch is with contact motion arm; Described gas density relay also comprises anti-error operation mechanism, and this anti-error operation mechanism comprises holder, rotating shaft, rotating part and driving lever, and described holder is arranged in described housing; Described rotating shaft is arranged on described holder; The center of rotation of described rotating part and center of gravity are non-with one heart and be arranged in described rotating shaft, and described driving lever is vertically mounted on the upper end of described rotating part and is resisted against on the contact motion arm of each sensitive switch; In the time that described gas density relay is subject to the shock and vibration of sulphur hexafloride circuit breaker divide-shut brake generation, the driving lever of described anti-error operation mechanism swings by rotating part and the contact motion arm of each sensitive switch is dialled toward the direction of gas density increase, make described sensitive switch away from there is the position of misoperation, avoid described Signal Regulation mechanism sensitive switch described in false triggering in the time that gas density is normal.

Above-mentioned sulfur hexafluoride gas density relay, wherein, described anti-error operation mechanism also comprises that an one end is fixed on described rotating shaft or rotating part, the other end is fixed on the hairspring on described holder.

Above-mentioned sulfur hexafluoride gas density relay, wherein, described anti-error operation mechanism also comprises a pair of locating part that is arranged in housing and limits the amplitude of fluctuation of described rotating part.

Above-mentioned sulfur hexafluoride gas density relay, wherein, described anti-error operation mechanism is also with damping mechanism.

Above-mentioned sulfur hexafluoride gas density relay, wherein, described rotating part and driving lever are overall structures.

Above-mentioned sulfur hexafluoride gas density relay, wherein, described holder is arranged on described sensitive switch or pedestal or movement.

Above-mentioned sulfur hexafluoride gas density relay, wherein, described movement is also with damping mechanism.

Above-mentioned sulfur hexafluoride gas density relay, wherein, is also filled with shock liquid in described housing.

The another kind of technical scheme that realizes above-mentioned purpose is: a kind of sulfur hexafluoride gas density relay, comprise housing, be arranged in housing and relatively independent signal controlling part and indicating value display section, described signal control part is divided and is comprised control pedestal, control end seat, control Baden pipe, control temperature compensating element, control movement, Signal Regulation mechanism and some sensitive switches as signal generator, one end of described control Baden pipe is connected on described control pedestal, the other end of described control Baden pipe is connected with one end of described control temperature compensating element by described control end seat, described sensitive switch is with contact motion arm, described indicating value display section 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 of described demonstration Baden pipe 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 demonstration movement, and described pointer is connected with the central shaft of described demonstration movement, described gas density relay also comprises anti-error operation mechanism, and this anti-error operation mechanism comprises holder, rotating shaft, rotating part and driving lever, and described holder is arranged in described housing, described rotating shaft is arranged on described holder, the center of rotation of described rotating part and center of gravity are non-with one heart and be arranged in described rotating shaft, and described driving lever is vertically mounted on the upper end of described rotating part and is resisted against on the contact motion arm of each sensitive switch, in the time that described gas density relay is subject to the shock and vibration of sulphur hexafloride circuit breaker divide-shut brake generation, the driving lever of described anti-error operation mechanism swings by rotating part and the contact motion arm of each sensitive switch is dialled toward the direction of gas density increase, make described sensitive switch away from there is the position of misoperation, avoid described Signal Regulation mechanism sensitive switch described in false triggering in the time that gas density is normal.

The technical scheme of sulfur hexafluoride gas density relay of the present utility model, compared with prior art has following obvious advantage and disadvantage:

1, owing to having adopted anti-error operation mechanism, in the time of the shock and vibration of switch divide-shut brake generation, the driving lever of anti-error operation mechanism swings by rotating part and the contact motion arm of each sensitive switch is dialled toward the direction of gas density increase, make sensitive switch away from the position that misoperation occurs, avoid Signal Regulation mechanism false triggering sensitive switch in the time that gas density is normal, guarantee system reliably working;

2, owing to being also filled with shockproof oil in housing, in the time that switch divide-shut brake produces vibration, the shock resistant damping effect of shockproof oil is more obvious, guarantee during shock and vibration, sensitive switch, away from the position that misoperation occurs, guarantees that misoperation can not occur the locking contact of density monitor, can not carry out locking to switch, therefore can meet the reclosing requirement of sulphur hexafloride circuit breaker, guarantee network system reliably working;

In sum, sulfur hexafluoride gas density relay of the present utility model has: A. meets the contact return difference of density monitor; B. can greatly improve the resistance to shock of density monitor, in the time of normal density value, when impact or when vibration that switch divide-shut brake produces, the driving lever of anti-error operation mechanism can not depart from sensitive switch, can not cause control system to lose efficacy yet; C. can not cause the output of misoperation signal; D. simultaneously in the time of debugging, be also easy to the precision of harmonizing density monitor, be easy to make high-precision density monitor; E. Simultaneous Stabilization is also better.

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 structural representation of the third pointer sulfur hexafluoride gas density relay of prior art;

Fig. 6 is the partial side view of Fig. 5;

Fig. 7 is the structural representation of the 4th kind of pointer sulfur hexafluoride gas density relay of prior art;

Fig. 8 is the structural representation of the first sulfur hexafluoride gas density relay of the present utility model;

Fig. 9 is the partial side view of Fig. 8;

Figure 10 is the partial rear view of the first sulfur hexafluoride gas density relay of the present utility model;

Figure 11 is the partial elevation view (normal condition) of the first sulfur hexafluoride gas density relay of the present utility model;

Figure 12 is the partial elevation view (state when impact) of the first sulfur hexafluoride gas density relay of the present utility model;

Figure 13 is the first anti-error operation mechanism structural representation in the first sulfur hexafluoride gas density relay of the present utility model;

Figure 14 is the second anti-error operation mechanism structural representation in the first sulfur hexafluoride gas density relay of the present utility model.

Figure 15 is the structural representation of the second sulfur hexafluoride gas density relay of the present utility model.

Embodiment

In order to understand the technical solution of the utility model better, be also described in detail by reference to the accompanying drawings below by specific embodiment.

Refer to Fig. 8 to Figure 13, the first sulfur hexafluoride gas density relay of the present utility model, is mainly made up of joint 1, movement 2, housing 3, dial 4, pointer 5, Baden's pipe 6, temperature compensating element 7, junction block 8, three sensitive switches 91,92,93, printed circuit board 10, location-plate 11, fixed head 12, electric wire 13, Signal Regulation mechanism, connecting rod 15, crossbeam 16, watch crystal 17, cover circle 18, pedestal 19, deferent 20, anti-error operation mechanism 21, sensitive switch reinforcing mechanisms 23, end seat 24 etc.Wherein, joint 1 is fixed on housing 3, and movement 2 is fixed on pedestal 19, one end of Baden's pipe 6 is welded on pedestal 19 and with it and is communicated with, and the other end is connected with one end of temperature compensating element 7 by end seat 24, and the other end of temperature-compensating sheet 7 is connected with crossbeam 16, on crossbeam 16, be fixed with three adjusting rods 141,142,143 of Signal Regulation mechanism, crossbeam 16 is connected with connecting rod 15 again, and connecting rod 15 is connected with movement 2 again, three sensitive switches 91,92,93 are separately fixed on printed circuit board 10, printed circuit board 10 is fixed on fixed head 12, fixed head 12 is arranged on again on pedestal 19, and three sensitive switch 91,92,93 correspondences are arranged on the top of each adjusting rod 141,142,143, and the lower end of three sensitive switches 91,92,93 connects respectively contact motion arm 911,921,931, the contact of three sensitive switches 91,92,93 is all connected to the outer surface of junction block 8 from printed circuit board 10 by electric wire 13, junction block 8 is fixed on the outer surface of housing 3, sensitive switch reinforcing mechanisms 23 is fixed on three sensitive switches 91,92,93, and the form of sensitive switch reinforcing mechanisms 23 is unrestricted, can be diversified, location-plate 11 is fixed on movement 2, pointer 5 and dial 4 are separately fixed on movement 2, watch crystal 17 and cover circle 18 are separately fixed on housing 3, can protect the mechanism of housing 3 inside to avoid mechanical damage and dirt, rainwater are invaded, one end of deferent 20 is connected with pedestal 19, and positiver sealing, and the other end of deferent 20 is connected with joint 1, and positiver sealing, anti-error operation mechanism 21 mainly comprises rotating part 211, driving lever 214, rotating shaft 212 and holder 213, (seeing Figure 10, Figure 11, Figure 12 and Figure 13) and a pair of locating part 216,217, holder 213 is fixed on sensitive switch reinforcing mechanisms 23 or pedestal 19 or movement 2, rotating shaft 212 is fixed on holder 213, the center of rotation of rotating part 211 and center of gravity are made into and are non-ly arranged in rotating shaft 212 with one heart and in the mode that center of gravity is positioned at the oblique below of center of rotation, driving lever 214 is vertically mounted on the upper end of rotating part 211 and is resisted against three sensitive switches 91, 92, 93 contact motion arm 911, 921, on 931, a pair of locating part 216, 217 are fixed on sensitive switch reinforcing mechanisms 23 or pedestal 19, this is to locating part 216, 217 can limit the amplitude of fluctuation of rotating part 211, guarantee in the time that gas density relay is impacted or vibrate, driving lever 214 can not damage the contact motion arm of sensitive switch.

The first sulfur hexafluoride gas density relay of the present utility model, its operation principle is based on flexible member Baden pipe 6, utilizes temperature compensating element 7 to revise the pressure and temperature changing, the variation of reaction sulfur hexafluoride gas density.Under the pressure-acting of measured medium sulfur hexafluoride gas, owing to there being the effect of temperature-compensating sheet 7, the variation of the gas density value in electric switch, force value also changes accordingly, force the end of Baden's pipe 6 to produce corresponding strain-displacement, pass to movement 2 by means of temperature-compensating sheet 7 and connecting rod 15, movement 2 passes to again pointer 5, then tested sulfur hexafluoride gas density value is indicated on dial 4.If electric switch has leaked gas, density value drops to a certain degree (reach and report to the police or locking value), Baden's pipe 6 produces accordingly to bottom offset, make crossbeam 16 to bottom offset by temperature-compensating sheet 7, adjusting rod 141,142,143 on crossbeam 16 is just gradually from corresponding sensitive switch 91,92,93, to a certain extent time, the contact of corresponding sensitive switch 91,92,93 is just connected, send corresponding signal (reporting to the police or locking), reach the sulfur hexafluoride gas density in the equipment such as monitoring and controlling electric switch, make electric equipment trouble free service.If the density value in electric switch has raise, force value also raises accordingly, be elevated to a certain degree, Baden's pipe 6 also produces accordingly to top offset, by temperature-compensating sheet 7, make crossbeam 16 to top offset, the adjusting rod 141,142,143 on crossbeam 16 just disconnects to top offset the contact that promotes corresponding sensitive switch 91,92,93, and signal (report to the police or locking) is just removed.Because the center of gravity of the rotating part 211 of anti-error operation mechanism 21 is positioned at the oblique below of its center of rotation, and driving lever 214 is positioned at the upper end of rotating part 211, in the time that gas density relay is impacted or vibrate, the rotating part 211 of anti-error operation mechanism 21 will produce counter-clockwise swing, driving lever 214 is three sensitive switches 91, 92, 93 contact motion arm 911, 921, 931 directions that increase toward density (pressure) are dialled (seeing Figure 12), make three sensitive switches 91, 92, 93 away from the position that misoperation occurs, avoid Signal Regulation mechanism three sensitive switches 91 of false triggering in the time that gas density is normal, 92, 93.

The innovative point of the first sulfur hexafluoride gas density relay of the present utility model is to utilize the rotating part 211 of anti-error operation mechanism 21 in the time impacting, also can produce swing, be equivalent to make signal generator (sensitive switch) to escape impact, therefore greatly improved the resistance to shock of density monitor.And in the time not being subject to impacting, while being normal condition, driving lever 214 is resisted against on the contact motion arm of each sensitive switch, the contact motion arm of sensitive switch has support force to driving lever 214, rotating part 211 can optionally not rotated, but and then the contact motion arm of sensitive switch rotates, thereby can guarantee that driving lever 214 does not affect the normal work of the contact motion arm of sensitive switch.Rotating part 211 and driving lever 214 can be overall structures, also can be mounted in Split type structure together, and its shape can be various.

Above-mentioned sensitive switch and adjusting rod are not limited to three, can also be one, two or four.

Figure 14 is the structural representation of another anti-error operation mechanism, it comprises upper fixed seat 213A and lower fixed seat 213B, rotating shaft 212 is fixed between upper fixed seat 213A and lower fixed seat 213B, and rotating part is fixed in rotating shaft 212, and driving lever 214 is one with rotating part 211.Also comprise in addition that one end is fixed in rotating shaft 212, the other end is fixed on upper fixed seat 213A and lower fixed seat 213B between pillar on hairspring 215.The effect of hairspring 215 is in the time of normal condition, guarantees that driving lever 214 does not affect the normal work of the contact motion arm of sensitive switch.

See Figure 15, the second sulfur hexafluoride gas density relay of the present utility model, compares with the first relay, and housing 3 has good sealing, therefore can also in housing 3, be filled with shock liquid, and the resistance to shock of sulfur hexafluoride gas density relay is more increased.The structure of rotating part can be designed to: resistance little (damping is little) when the direction increasing to density (pressure) swings, and the direction reducing to density (pressure) resistance large (damping is large) while swinging.

In addition, the third sulfur hexafluoride gas density relay of the present utility model comprises relatively independent signal controlling part and indicating value display section.Signal control part is divided and is comprised control pedestal, control end seat, controls Baden's pipe, controls temperature compensating element, controls movement, Signal Regulation mechanism and some sensitive switches as signal generator, one end of controlling Baden's pipe is connected to be controlled on pedestal, the other end is connected with one end of controlling temperature compensating element by control end seat, sensitive switch is arranged in housing and with contact operating grip, and is provided with accordingly anti-error operation mechanism with the contact motion arm of sensitive switch.Anti-error operation mechanism comprises rotating lever, rotating shaft and holder, wherein, rotating lever is arranged in rotating shaft, and rotating lever comprises rotating part and is arranged on the driving lever of the upper end of rotating part, driving lever is resisted against on the contact motion arm of sensitive switch, and the center of rotation of this rotating lever and center of gravity are non-with one heart; Rotating shaft is fixed on holder, and holder is fixed on to be controlled pedestal or controls on movement,

In the time that gas density relay is impacted or vibrate, the rotating part of anti-error operation mechanism swings, driving lever just increases the contact motion arm of each sensitive switch direction toward density (pressure) is dialled, make signal generator (sensitive switch) away from the position that misoperation occurs, avoid Signal Regulation mechanism at the normal mistiming trigger signal generator of gas density (sensitive switch).

Indicating value display section comprises demonstration Baden pipe, displays temperature compensating element,, display base, display end seat, shows movement and pointer, the one end that shows Baden's 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 that shows movement, and pointer is connected with the central shaft that shows movement.

Can also further, signal controlling part be sealed in an air chamber, control 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 the demonstration Baden in display section; In order to improve resistance to shock, the control Baden pipe in control section can be vertical setting with the demonstration Baden pipe in display section.Like this, control section and display section 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 is certain deviation in its actual operating value and pointer show value, makes troubles to user.

Owing to having adopted anti-error operation mechanism, add and fill shockproof oil with, in the time that switch divide-shut brake produces vibration, make the shock resistant damping effect of shockproof oil more obvious, guarantee that, during impacting or vibrating, signal generator (sensitive switch) is away from the position that misoperation occurs, can there is not misoperation in the locking contact of guaranteeing density monitor, can not carry out locking to switch, can meet the reclosing requirement of sulphur hexafloride circuit breaker, guarantee network system reliably working.Through processing like this, just there is extraordinary performance, reach: A, can accomplish that the contact return difference of density monitor meets the demands; B, greatly improve the resistance to shock of density monitor, in the time of normal density value, when the impact being subject in the time of switch divide-shut brake or vibration, adjusting rod just can not trigger the phenomenon of sensitive switch, can not cause control system to lose efficacy yet; C, can not cause the output of error signal; D, simultaneously in the time of debugging, what be also easy to the precision to adjust is very accurate, is easy to make high-precision density monitor; E, stability are also better.The advantages such as resistance to shock is high so gas density relay of the present utility model has, the good electric property of signal generator, contact contact, long working life, guarantee 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.

In addition, the center of rotation of the rotating part 211 of anti-error operation mechanism of the present utility model and center of gravity are non-with one heart and can also be positioned at the same plane of center of rotation or the mode of oblique upper is arranged in rotating shaft 213 with its center of gravity, and driving lever 214 is vertically mounted on the upper end of rotating part 211 and is resisted against on the contact motion arm of each sensitive switch.So also can greatly improve the resistance to shock of density monitor, in the time of normal density value, when impact or when vibration that switch divide-shut brake produces, guarantee during shock and vibration, sensitive switch, away from the position that misoperation occurs, guarantees that misoperation can not occur the locking contact of density monitor, can not carry out locking to switch, therefore can meet the reclosing requirement of sulphur hexafloride circuit breaker, guarantee network system reliably working.

Above embodiment is only for illustration of the utility model, but not to restriction of the present utility model, person skilled in the relevant technique, in the situation that not departing from spirit and scope of the present utility model, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.

Claims (10)

1. one kind high antivibration sulfur hexafluoride gas density relay, comprise housing, be arranged on pedestal, end seat, Baden's pipe, temperature compensating element, movement, Signal Regulation mechanism and some sensitive switches as signal generator in housing, described end seat is connected with one end of described Baden pipe, the other end of described Baden pipe is connected on described pedestal, and described sensitive switch is with contact motion arm; It is characterized in that,

Described gas density relay also comprises anti-error operation mechanism, and this anti-error operation mechanism comprises holder, rotating shaft, rotating part and driving lever, and described holder is arranged in described housing; Described rotating shaft is arranged on described holder; The center of rotation of described rotating part and center of gravity are non-with one heart and be arranged in described rotating shaft, and described driving lever is vertically mounted on the upper end of described rotating part and is resisted against on the contact motion arm of each sensitive switch;

In the time that described gas density relay is subject to the shock and vibration of sulphur hexafloride circuit breaker divide-shut brake generation, the driving lever of described anti-error operation mechanism swings by rotating part and the contact motion arm of each sensitive switch is dialled toward the direction of gas density increase, make described sensitive switch away from there is the position of misoperation, avoid described Signal Regulation mechanism sensitive switch described in false triggering in the time that gas density is normal.

2. sulfur hexafluoride gas density relay according to claim 1, is characterized in that, described anti-error operation mechanism also comprises that an one end is fixed on described rotating shaft or rotating part, the other end is fixed on the hairspring on described holder.

3. sulfur hexafluoride gas density relay according to claim 1, is characterized in that, described anti-error operation mechanism also comprises a pair of locating part that is arranged in housing and limits the amplitude of fluctuation of described rotating part.

4. sulfur hexafluoride gas density relay according to claim 1, is characterized in that, described anti-error operation mechanism is also with damping mechanism.

5. sulfur hexafluoride gas density relay according to claim 1, is characterized in that, described rotating part and driving lever are overall structures.

6. sulfur hexafluoride gas density relay according to claim 1, is characterized in that, described holder is arranged on described sensitive switch or pedestal or movement.

7. the sulfur hexafluoride gas density relay described in any one according to claim 1 to 6, is characterized in that, described movement is also with damping mechanism.

8. the sulfur hexafluoride gas density relay described in any one according to claim 1 to 6, is characterized in that, is also filled with shock liquid in described housing.

9. sulfur hexafluoride gas density relay according to claim 7, is characterized in that, is also filled with shock liquid in described housing.

10. a sulfur hexafluoride gas density relay, comprise housing, be arranged in housing and relatively independent signal controlling part and indicating value display section, described signal control part is divided and is comprised control pedestal, control end seat, control Baden pipe, control temperature compensating element, control movement, Signal Regulation mechanism and some sensitive switches as signal generator, one end of described control Baden pipe is connected on described control pedestal, the other end of described control Baden pipe is connected with one end of described control temperature compensating element by described control end seat, described sensitive switch is with contact motion arm, described indicating value display section 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 of described demonstration Baden pipe 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 demonstration movement, and described pointer is connected with the central shaft of described demonstration movement, it is characterized in that,

Described gas density relay also comprises anti-error operation mechanism, and this anti-error operation mechanism comprises holder, rotating shaft, rotating part and driving lever, and described holder is arranged in described housing; Described rotating shaft is arranged on described holder; The center of rotation of described rotating part and center of gravity are non-with one heart and be arranged in described rotating shaft, and described driving lever is vertically mounted on the upper end of described rotating part and is resisted against on the contact motion arm of each sensitive switch;

In the time that described gas density relay is subject to the shock and vibration of sulphur hexafloride circuit breaker divide-shut brake generation, the driving lever of described anti-error operation mechanism swings by rotating part and the contact motion arm of each sensitive switch is dialled toward the direction of gas density increase, make described sensitive switch away from there is the position of misoperation, avoid described Signal Regulation mechanism sensitive switch described in false triggering in the time that gas density is normal.

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