CN103594284B - A kind of sulfur hexafluoride gas density relay - Google Patents
A kind of sulfur hexafluoride gas density relay Download PDFInfo
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- CN103594284B CN103594284B CN201310585753.9A CN201310585753A CN103594284B CN 103594284 B CN103594284 B CN 103594284B CN 201310585753 A CN201310585753 A CN 201310585753A CN 103594284 B CN103594284 B CN 103594284B
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Abstract
The invention discloses a kind of resistance to shock higher, and the contacts of signal generator and electric property better, long working life, the sulfur hexafluoride gas density relay that precision is high, comprise housing, the pedestal be arranged in housing, end seat, Baden's pipe, temperature compensating element, movement, Signal Regulation mechanism, some sensitive switches.Be characterized in also comprising the anti-error operation mechanism corresponding with the contact motion arm of sensitive switch.This anti-error operation mechanism comprises holder, rotating shaft, rotating part and driving lever, and wherein driving lever is resisted against on the contact motion arm of each sensitive switch accordingly.When gas density relay is impacted or vibrate, the driving lever of anti-error operation mechanism is swung by rotating part and the contact motion arm of each sensitive switch is allocated to the direction of pressure increase, make signal generator away from the position that misoperation occurs, avoid Signal Regulation mechanism at the normal mistiming trigger signal generator of gas density, greatly improve the resistance to shock of density monitor.
Description
Technical field
The present invention relates to a kind of sulfur hexafluoride gas density relay.
Background technology
At present, be used for the sulfur hexafluoride gas density of monitoring 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 gas density relay (as depicted in figs. 1 and 2) generally comprises dial 1 disclosed in 201010171798.8, pointer 2, Baden's pipe 3, temperature compensating element 4, pedestal 5, with the movement 6 of display 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 pedestal 5 respectively, 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, contact motion arm 12 is fixed with regulating part 111,112,113.Sensitive switch 101,102,103 is welded on printed circuit board 18 respectively, 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.Each sensitive switch is respectively equipped with operating grip 1011,1021,1031.Location-plate 19 rear end is fixed on movement 6, and front end extends to the below of the end seat 14 be connected with temperature compensating element 4 by Baden's pipe 3.The contact of sensitive switch 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 sensitive switch that these gas density relays above-mentioned adopt has the advantage of good electric property, but because the length of contact motion arm 12 is longer, and be a cantilever beam, when operating sulphur hexafloride circuit breaker, causing contact motion arm 12 to vibrate very large, and then causing sulfur hexafluoride gas density relay to occur misoperation, even occur damaging sensitive switch, lose performance completely, resistance to shock is poor in a word, is difficult to guarantee system reliably working.
Fig. 3 and Fig. 4 is seen at patent 200610023139.3,200610118940.6() in disclosed gas density relay, the sensitive switch adopted has the advantage of good electric property, but because the length of contact motion arm 16 is longer, and be a cantilever beam, when operating sulphur hexafloride circuit breaker, contact motion arm 16 is caused to vibrate very large, and then cause sulfur hexafluoride gas density relay to occur misoperation, that is its resistance to shock is bad, system reliably working can not be ensured, 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, can not bear the shock 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 shock test of 50g, 11ms, can there is misoperation in locking contact, locking is carried out to switch, the reclosing requirement of sulphur hexafloride circuit breaker can not have been met.Its resistance to shock is also undesirable in a word, is difficult to guarantee system reliably working.
Fig. 5 and Fig. 6 is seen 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, make the contact on sensitive switch 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 sensitive switch, makes sensitive switch send corresponding signal, completes the function of density monitor.But, when sulphur hexafloride circuit breaker carries out breaking-closing operating, vibration can be produced to Baden's pipe and temperature compensating element, Baden can be caused to manage for this vibration and temperature compensating element is subjected to displacement, this displacement passes to sensitive switch after also being amplified by displacement amplifying mechanism, makes sensitive switch send corresponding signal.Will produce misoperation like this, that is its resistance to shock is bad, can not ensure system reliably working, brings 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, can not bear the shock 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 shock test of 50g, 11ms, can there is misoperation in locking contact, locking is carried out to switch, the reclosing requirement of sulphur hexafloride circuit breaker can not have been met.And the problem of patent 200520115321.2 is similar to patent 201010171798.8, also be can vibration cause be displaced through displacement amplifying mechanism amplify after pass to sensitive switch (namely by control sector gear pass to controller mandrel, sensitive switch is passed to again) through controller mandrel, be exaggerated the displacement vibrated and cause so widely, be equivalent to make vibration become more severe.Because when sulphur hexafloride circuit breaker breaking-closing operating, vibration is very large, need the better gas density relay of resistance to shock especially, these gas density relays above-mentioned then can not be dealt with.
In addition, patent 200810201462.4(is shown in Fig. 7) disclosed a kind of gas density relay, although contact also uses sensitive switch, also be provided with the regulating part 141 ~ 143 corresponding with sensitive switch and contact operating axis 16, wherein, rotating shaft 24 in the rotating shaft 24 that one end of contact operating axis 16 is connected to the sector gear of movement 2 and with this sector gear is rotated, on this contact operating axis 16, compartment of terrain radial direction offers the threaded perforations corresponding with sensitive switch 91 ~ 93 along its length, regulating part 141 ~ 143 is plugged in threaded perforations and its end correspondingly and is resisted against on the motion arm of sensitive switch 91 ~ 93.Rotated by the contact operating axis 16 be fixed in the rotating shaft 24 of sector gear, make the regulating part 141 ~ 143 be fixed on this contact operating axis 16 drive sensitive switch 91 ~ 93 action.Because the rotational angle of the rotating shaft 24 of sector gear is very little, the precision of product is reduced.More seriously the actuating length due to the motion arm of sensitive switch is short, and regulating part 141 ~ 143 employing is adjustment screw.When Baden's pipe 6 moves, sector shaft 24 with movement 2 rotates, adjustment screw is made to rotate the motion arm encountering sensitive switch, drive the moving contact of motion arm push switch, when the motion arm of the end face with sensitive switch that turn to adjustment screw is vertical, adjustment screw is blocked and can not have rotated, so be difficult to the density monitor of the gamut realizing-0.1 ~ 0.9MPa, particularly be difficult to the display realizing being initiated with-0.1MPa, just cannot show when vacuumizing, be difficult to apply, so be starved of innovation.
Summary of the invention
The object of the invention is to the defect overcoming prior art, provide 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.
A kind of technical scheme realizing above-mentioned purpose is: a kind of high antivibration sulfur hexafluoride gas density relay, comprise housing, the pedestal be arranged in housing, end seat, Baden's pipe, temperature compensating element, movement, Signal Regulation mechanism and some sensitive switches as signal generator, 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 non-concentric are also 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; When 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 is swung by rotating part and the direction that the contact motion arm of each sensitive switch increases toward gas density is dialled, make described sensitive switch away from the position that misoperation occurs, avoid described Signal Regulation mechanism sensitive switch described in false triggering when 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 hairspring on described holder.
Above-mentioned sulfur hexafluoride gas density relay, wherein, described anti-error operation mechanism also comprises and is arranged on for a pair in housing and limits the locating part of 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 realizing above-mentioned purpose is: a kind of sulfur hexafluoride gas density relay, comprise housing, be arranged in housing and relatively independent signal control portion and indicating value display section, described signal control portion comprises control pedestal, control end seat, control Baden manages, 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 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 of described display 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 display movement, and described pointer is connected with the central shaft of described display 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 non-concentric are also 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, when 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 is swung by rotating part and the direction that the contact motion arm of each sensitive switch increases toward gas density is dialled, make described sensitive switch away from the position that misoperation occurs, avoid described Signal Regulation mechanism sensitive switch described in false triggering when gas density is normal.
The technical scheme of sulfur hexafluoride gas density relay of the present invention, compared with prior art has following obvious advantage and disadvantage:
1, owing to have employed anti-error operation mechanism, when the shock and vibration that switch divide-shut brake produces, the driving lever of anti-error operation mechanism is swung by rotating part and the direction that the contact motion arm of each sensitive switch increases toward gas density is dialled, make sensitive switch away from the position that misoperation occurs, avoid Signal Regulation mechanism false triggering sensitive switch when gas density is normal, ensure system reliably working;
2, owing to being also filled with shockproof oil in housing, when 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, is guaranteed that the locking contact of density monitor misoperation can not occur, can not be carried out locking to switch, therefore, it is possible to meet the reclosing requirement of sulphur hexafloride circuit breaker, ensure network system reliably working;
In sum, sulfur hexafluoride gas density relay of the present invention has: A. meets the contact return difference of density monitor; B. greatly can improve the resistance to shock of density monitor, when normal density value, when the impact that switch divide-shut brake produces or vibration, the driving lever of anti-error operation mechanism can not depart from sensitive switch, and control system also can not be caused to lose efficacy; C. the output of misoperation signal can not be caused; D., simultaneously when debugging, being also easy to the precision of adjustment density monitor, being 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 invention;
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 invention;
Figure 11 is the partial elevation view (normal condition) of the first sulfur hexafluoride gas density relay of the present invention;
Figure 12 is the partial elevation view (during impact state) of the first sulfur hexafluoride gas density relay of the present invention;
Figure 13 is the first the anti-error operation mechanism structural representation in the first sulfur hexafluoride gas density relay of the present invention;
Figure 14 is the second anti-error operation mechanism structural representation in the first sulfur hexafluoride gas density relay of the present invention.
Figure 15 is the structural representation of the second sulfur hexafluoride gas density relay of the present invention.
Embodiment
In order to understand technical scheme of the present invention 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 invention, primarily 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, the composition such as end seat 24.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 is also communicated with it, 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, crossbeam 16 is 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, the lower end of three sensitive switches 91,92,93 connects contact motion arm 911,921,931 respectively, 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 fixing on the 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, and the mechanism of energy protective housing 3 inside invades from mechanical damage and dirt, rainwater, one end of deferent 20 is connected with pedestal 19, and positiver sealing, 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, (see Figure 10, Figure 11, Figure 12 and Figure 13) and a pair 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 non-concentric and the mode being positioned at the oblique below of center of rotation with center of gravity is arranged in rotating shaft 212, driving lever 214 is vertically mounted on the upper end of rotating part 211 and is resisted against three sensitive switches 91, 92, the contact motion arm 911 of 93, 921, on 931, a pair locating part 216, 217 are fixed on sensitive switch reinforcing mechanisms 23 or pedestal 19, this is to locating part 216, 217 amplitudes of fluctuation that can limit rotating part 211, guarantee when 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 invention, its operation principle is based on flexible member Baden pipe 6, utilizes the pressure and temperature of temperature compensating element 7 to change to revise, the change of reaction sulfur hexafluoride gas density.Namely under the pressure effect of measured medium sulfur hexafluoride gas, owing to there being the effect of temperature-compensating sheet 7, the change of the gas density value in electric switch, force value also changes accordingly, the end of Baden's pipe 6 is forced 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 (reaching warning or locking value), Baden's pipe 6 produces corresponding 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, time to a certain extent, 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 increases, force value also raises accordingly, be elevated to a certain degree, Baden's pipe 6 also produces corresponding to top offset, by temperature-compensating sheet 7, make crossbeam 16 to top offset, the adjusting rod 141,142,143 on crossbeam 16 just to top offset and the contact promoting corresponding sensitive switch 91,92,93 disconnect, signal (report to the police or locking) is just removed.Center of gravity due to 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, when 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, the contact motion arm 911 of 93, 921, 931 dial (see Figure 12) toward the direction that density (pressure) increases, make three sensitive switches 91, 92, 93 away from the position that misoperation occurs, avoid Signal Regulation mechanism false triggering three sensitive switches 91 when gas density is normal, 92, 93.
The innovative point of the first sulfur hexafluoride gas density relay of the present invention utilizes the rotating part 211 of anti-error operation mechanism 21 also can produce swing when impacting, be equivalent to make signal generator (sensitive switch) escape impact, therefore substantially increase the resistance to shock of density monitor.And when not being subject to impacting, namely during 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 not optionally be rotated, but and then the contact motion arm of sensitive switch rotates, thus 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, and also can be mounted in Split type structure together, 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 and rotating part 211 are one.Also comprise that one end is fixed in rotating shaft 212 in addition, hairspring 215 on pillar that the other end is fixed between upper fixed seat 213A and lower fixed seat 213B.The effect of hairspring 215 is when 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 invention, compared with the first relay, housing 3 has good sealing, therefore can also be filled with shock liquid in housing 3, 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 swinging to the direction that density (pressure) increases, and resistance large (damping is large) when swinging to the direction that density (pressure) reduces.
In addition, the third sulfur hexafluoride gas density relay of the present invention comprises relatively independent signal control portion and indicating value display section.Signal control portion comprises control pedestal, control end seat, controls Baden's pipe, control temperature compensating element, controls movement, Signal Regulation mechanism and some sensitive switches as signal generator, the one end controlling Baden's pipe is connected to and controls on pedestal, the other end is connected with one end of control temperature compensating element, by control end seat, sensitive switch to be arranged in housing and with contact operating grip, and is provided with anti-error operation mechanism accordingly 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 upper end of rotating part, driving lever is resisted against on the contact motion arm of sensitive switch, the center of rotation of this rotating lever and center of gravity non-concentric; Rotating shaft is fixed on holder, and holder is fixed on and controls pedestal or control on movement,
When gas density relay is impacted or vibrate, the rotating part of anti-error operation mechanism swings, driving lever is just dialled the direction that the contact motion arm of each sensitive switch increases toward density (pressure), make signal generator (sensitive switch) away from the position that misoperation occurs, avoid Signal Regulation mechanism the normal mistiming trigger signal generator (sensitive switch) of gas density.
Indicating value display section comprises 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 be sealed in an air chamber, control temperature compensating element, is sulfur hexafluoride gas; Control pedestal and display base can unite two into one; Control Baden pipe in control section and the display Baden pipe in display section are for being arranged side by side; In order to improve resistance to shock, the control Baden pipe in control section can be managed with the display Baden in display section and be arranged for vertical.Like this, control section and display section are relatively independent, it has the following advantages: can accomplish actual act value and pointer show value just the same, and traditional pointer type density relay, owing to there is switch resistance and magnetic helps formula power, always there is certain deviation in its actual operating value and pointer show value, makes troubles to user.
Owing to have employed anti-error operation mechanism, add and fill shockproof oil with, when switch divide-shut brake produces vibration, making the shock resistant damping effect of shockproof oil more obvious, guaranteeing that, during impact or vibration, signal generator (sensitive switch) is the position away from there is misoperation, guarantee that the locking contact of density monitor misoperation can not occur, locking can not be carried out to switch, the reclosing requirement of sulphur hexafloride circuit breaker can be met, ensure network system reliably working.Through like this process, 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, when normal density value, when the impact be subject to when switch divide-shut brake or vibration, would not there is the phenomenon triggering sensitive switch in adjusting rod, control system also can not be caused to lose efficacy; C, the output of error signal can not be caused; D, simultaneously when debugging, be also easy to precision adjust very accurate, be 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 invention has, the good electric property of signal generator, contacts are good, long working life, ensure that 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 equipment.
In addition, the mode of same plane or oblique upper that the center of rotation of the rotating part 211 of anti-error operation mechanism of the present invention and center of gravity non-concentric also can also be positioned at center of rotation with its center of gravity is arranged in rotating shaft 213, 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 greatly can improve the resistance to shock of density monitor, when normal density value, when the impact that switch divide-shut brake produces or vibration, guarantee during shock and vibration, sensitive switch, away from the position that misoperation occurs, is guaranteed that the locking contact of density monitor misoperation can not occur, can not be carried out locking to switch, therefore, it is possible to meet the reclosing requirement of sulphur hexafloride circuit breaker, ensure network system reliably working.
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, various conversion or modification can also be made, therefore all equivalent technical schemes also should belong to category of the present invention, should be limited by each claim.
Claims (10)
1. one kind high antivibration sulfur hexafluoride gas density relay, comprise housing, the pedestal be arranged in housing, end seat, Baden's pipe, temperature compensating element, movement, Signal Regulation mechanism and some sensitive switches as signal generator, 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 non-concentric are also 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;
When 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 is swung by rotating part and the direction that the contact motion arm of each sensitive switch increases toward gas density is dialled, make described sensitive switch away from the position that misoperation occurs, avoid described Signal Regulation mechanism sensitive switch described in false triggering when 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 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 and is arranged on for a pair in housing and limits the locating part of 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 reinforcing mechanisms or pedestal or movement.
7., according to the sulfur hexafluoride gas density relay of claim 1 to 6 described in any one, it is characterized in that, described movement is also with damping mechanism.
8., according to the sulfur hexafluoride gas density relay of claim 1 to 6 described in any one, it is characterized in that, in described housing, be also filled with shock liquid.
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 control portion and indicating value display section, described signal control portion comprises control pedestal, control end seat, control Baden manages, 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 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 of described display 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 display movement, and described pointer is connected with the central shaft of described display 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 non-concentric are also 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;
When 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 is swung by rotating part and the direction that the contact motion arm of each sensitive switch increases toward gas density is dialled, make described sensitive switch away from the position that misoperation occurs, avoid described Signal Regulation mechanism sensitive switch described in false triggering when gas density is normal.
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| CN107658178B (en) * | 2017-07-20 | 2020-12-11 | 上海乐研电气有限公司 | Sulfur hexafluoride gas density relay, and vibration resisting method and device |
| CN108231475B (en) * | 2018-01-12 | 2019-06-14 | 上海乐研电气有限公司 | Sulfur hexafluoride gas density relay |
| 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 |
| CN109216107B (en) * | 2018-09-28 | 2024-03-29 | 上海乐研电气有限公司 | High-precision SF (sulfur hexafluoride) 6 Gas density relay and implementation method thereof |
| CN111952105B (en) * | 2020-07-07 | 2022-07-12 | 国家电网有限公司 | Full-range high-precision remote transmission type sulfur hexafluoride gas density relay |
| CN112595628B (en) * | 2020-11-23 | 2024-04-05 | 国网安徽省电力有限公司检修分公司 | Oilless anti-seismic remote sulfur hexafluoride gas density monitor |
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