CN201004419Y

CN201004419Y - Vibration resisting SF6 gas density relay

Info

Publication number: CN201004419Y
Application number: CNU2006200476358U
Authority: CN
Inventors: 袁海文; 苏丽芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-09
Filing date: 2006-11-09
Publication date: 2008-01-09
Anticipated expiration: 2016-11-09

Abstract

The utility model discloses a vibration resisting type sulfur hexafluoride gas density relay. Based on the structure of the traditional density relay, the jiggle switches are all arranged at the left side(the upward side) of the adjusting poles; namely, if the beam is the benchmark line and the jiggle switches are at one side of the beam, the base is at the other side of the beam. When the gas pressure reduces or no puffing, the adjusting poles does not touch the jiggle switches; the right sides of the adjusting poles do not have anything to block and then the temperature compensating sheet and the beam can not deform.

Description

Shakeproof type sulfur hexafluoride gas density relay

Technical field

The utility model relates to relay, more specifically refers to a kind of Shakeproof type sulfur hexafluoride gas density relay, and this relay is used for control and monitoring airtight container sulfur hexafluoride gas density.

Background technology

The sulphur hexafluoride electric product has been widely used in power department, industrial and mining enterprises, has promoted the fast development of power industry.The reliable and secure operation that guarantees the sulphur hexafluoride electric product has become one of vital task of power department.The arc-extinguishing medium of sulphur hexafluoride electric product and dielectric are sulfur hexafluoride gas, can not leak gas, if leak gas, just can not guarantee the reliable and secure operation of sulphur hexafluoride electric product.So the sulfur hexafluoride density value of monitoring sulphur hexafluoride electric product is very necessary.

Existing what be used for monitoring sulfur hexafluoride density is a kind of mechanical pointer density monitor, and it has when gas leakage takes place the sulphur hexafluoride electric product can warning and the performance of blocking function and on-the-spot display density value.It comprises that relay body and magnetic help the formula contact.Relay body and joint join, and in the relay of this structure, are to adopt hairspring type electric contact because magnetic helps the formula contact, help formula suction though added magnetic, and the reliable closure of docking point is helpful.But when density was higher than set point, its moving contact was moving along with pointer, pointer be very flexibly, elongated, and be afraid of to shake.In case when promptly density value had arrived set point (report to the police or locking), signalling contact (reporting to the police or locking) had moved, if this moment pointer in its vicinity the time, if vibration will make signal disconnect again, send misoperation.In addition, when contact (report to the police or locking) was closed, its closing force only depended on the small power of the hairspring of contact, adds that magnetic helps formula power, because the power of hairspring is very little, magnetic helps too big that formula suction can not transfer, and it is very little that two power stack up, and therefore extremely is afraid of to shake.In order to improve its vibration resistance, generally all be filled with silicone oil, but the reason on making, ubiquity leakage of oil problem.Leakage of oil taking place for the user, have only again and change, causes direct economic loss.

In order to reduce to vibrate influence to this relay, a kind of improved sulfur hexafluoride gas relay is arranged again, as shown in Figure 1, it comprises joint 1, movement 2, watchcase 3, three sensitive switches 91, printed board 10, with three three adjusting rods 141, connecting rod 15, crossbeam 16, location-plate 11, C shape pipe 16, pedestal 20, fixed heads 12 corresponding with sensitive switch 91, in addition, also have junction block 8, electric wire 13, watch crystal 17, cover circle 18.Joint 1 is fixed on the watchcase 3, and movement 2 is fixed on the pedestal 20, and pedestal 20 and backing plate 21 are fixed in the watchcase 3 together; One end of C type pipe 6 is welded on the pedestal 20, and the other end is connected with an end of temperature-compensating sheet 7, and the other end of temperature-compensating sheet 7 is connected with crossbeam 16, is fixed with several adjusting rods 141 on the crossbeam 16; One end of connecting rod 15 is connected with crossbeam 16, and the other end of connecting rod 15 is connected on the movement 2; Three sensitive switches 91 are welded on respectively in the printed board 10, and printed board 10 is fixed on the fixed head 12, and fixed head 12 is installed in again on the pedestal 20, and location-plate 11 is fixed on the movement 2, and pointer 5 is fixed on the movement 2, and dial 4 is fixed on the movement 2.The contact of sensitive switch by electric wire 13, is connected on the junction block 8 from printed board 10, and junction block 8 is fixed on the watchcase 3.Watch crystal 17, cover circle 18 are separately fixed on the watchcase 3, and an end of conduit 22 is connected with pedestal 20, and positiver sealing, and the other end of conduit 22 is connected with joint 1, and positiver sealing, and the effect of conduit 22 is exactly the SF6 gas circuit that is communicated with between pedestal 20 and the joint 1.This relay adopts sensitive switch 91 and adjusting rod 141 to substitute magnetic and helps the formula contact, its sensitive switch 91 and printed board 10 are the following or right sides that are positioned at temperature-compensating sheet 7, that is to say has sensitive switch 91 to stop below temperature-compensating sheet 7 and the crossbeam 16, when C type pipe 6 is not inflated or air pressure when not enough, under the condition of high temperature, temperature-compensating sheet 7 will uprising with temperature, will be to the both sides spreading, owing on one side manage 6 motionless and motionless because of C shape, so can only be to sensitive switch 91 direction spreadings, but sensitive switch 91 is immotile, time remaining has been grown like this, will cause temperature-compensating sheet 7 and crossbeam 16 to deform, and temperature-compensating sheet 7 and crossbeam 16 deform and will influence the operation precision of relay.Therefore, low or when not having air pressure, the temperature-compensating sector-meeting deforms when high temperature though the relay of this structure has solved vibration problem preferably at pressure, and the control precision of having lost relay.

Summary of the invention

The purpose of this utility model is the problems referred to above that exist at traditional density monitor, proposes a kind of Shakeproof type sulfur hexafluoride gas density relay, and this relay not only antivibration is effective, and precision can not change because of air pressure and variations in temperature.

To achieve these goals, the utility model adopts following technical scheme: a kind of Shakeproof type sulfur hexafluoride gas density relay, this relay comprises joint, movement, watchcase, several sensitive switches, printed board, several adjusting rods corresponding, connecting rod, crossbeam, location-plate, C shape pipe, pedestal and fixed head with sensitive switch

Described joint is fixed on the watchcase, and movement is fixed on the pedestal, and pedestal is fixed in the watchcase;

One end of described C type pipe is welded on the pedestal, and the other end is connected with an end of temperature-compensating sheet, and the other end of temperature-compensating sheet is connected with crossbeam, is fixed with several adjusting rods on the crossbeam;

One end of described connecting rod is connected with crossbeam, and the other end of connecting rod is connected on the movement;

Described several sensitive switches are welded in the printed board, and printed board is fixed on the fixed head, and fixed head is installed in again on the pedestal, and location-plate is fixed on the movement;

Be characterized in:

The left side that described each sensitive switch all is arranged on each adjusting rod is the top of each adjusting rod.Even be datum line with the crossbeam, sensitive switch is in a side of crossbeam, and pedestal is just at the opposite side of crossbeam so.

Described sensitive switch and adjusting rod corresponding with it can have 1,2 or 4.

In the technical solution of the utility model, it is on the architecture basics of traditional density monitor, end at the nearly sensitive switch of each adjusting rod also can be provided with trigger column, increased the contact area of adjusting rod and sensitive switch, and the increase of contact area, can make reliably to contact between sensitive switch and the trigger column, can not block or break-off, so just improve the resistance to shock of relay greatly; And be the top of each adjusting rod with the left side that sensitive switch, printed board all are arranged on trigger column, when gas pressure descends or does not inflate, adjusting rod (or trigger column) just can not run into sensitive switch, and the right side of adjusting rod stops without any thing, so just can not cause the distortion of temperature-compensating sheet and crossbeam, therefore the relay of this structure is when having solved vibration problem, also can guarantee low or when not having air pressure at pressure, relay has high control precision, this has very big innovation, bring good effect, improved product quality greatly.

Description of drawings

Fig. 1 is traditional sulfur hexafluoride gas density relay structural representation.

Fig. 2 is a sulfur hexafluoride gas density relay structural representation of the present utility model.

Embodiment

In order to understand technique scheme of the present utility model better, describe in detail further below in conjunction with drawings and Examples.

See also shown in Figure 2,

Shakeproof type sulfur hexafluoride gas density relay of the present utility model comprise joint 1, movement 2, watchcase 3,, printed board 10, several corresponding separately sensitive switch 91 and adjusting rods 141 that are provided with, present embodiment is two, an end that closes on sensitive switch at adjusting rod 141 can be provided with trigger column 191, connecting rod 15, crossbeam 16, location-plate 11, C shape pipe 16, pedestal 20, fixed head 12 respectively, in addition, also have junction block 8, electric wire 13, watch crystal 17, cover circle 18.Joint 1 is fixed on the watchcase 3, and movement 2 is fixed on the pedestal 20, and pedestal 20 and backing plate 21 are fixed in the watchcase 3 together; One end of C shape pipe 6 is welded on the pedestal 20, and the other end is connected with an end of temperature-compensating sheet 7, and the other end of temperature-compensating sheet 7 is connected with crossbeam 16, is fixed with several adjusting rods 141 on the crossbeam 16; One end of connecting rod 15 is connected with crossbeam 16, and the other end of connecting rod 15 is connected on the movement 2; Each sensitive switch 91 is welded on respectively in the printed board 10, and printed board 10 is fixed on the fixed head 12, and fixed head 12 is installed in again on the pedestal 20, and location-plate 11 is fixed on the movement 2, and the function of location-plate 11 is: work as SF ₆When gas density drops to certain value, move down, and then protection movement 2 do not take off tooth, and then protection crossbeam 16 do not damaged by pressure and be out of shape, make whole system keep reliably working with regard to spacing C shape pipe 6.Pointer 5 is fixed on the movement 2, and dial 4 is fixed on the movement 2.The contact of sensitive switch by electric wire 13, is connected on the junction block 8 from printed board 10, and junction block 8 is fixed on the watchcase 3.Watch crystal 17, cover circle 18 are separately fixed on the watchcase 3, can protect its internal mechanism to avoid mechanical damage and filthy, rainwater intrusion.One end of conduit 22 is connected with pedestal 20, and positiver sealing, and the other end of conduit 22 is connected with joint 1, and positiver sealing, and the effect of conduit 22 is exactly the SF that is communicated with between pedestal 20 and the joint 1 ₆Gas circuit.

Characteristics of the present utility model are, the left side that each sensitive switch 91 all is arranged on each adjusting rod 141 is the top of each adjusting rod, each adjusting rod 141 all also can be provided with trigger column 191 at an end that closes on sensitive switch, and the movement arm of each sensitive switch 91 is positioned at a side of nearly trigger column 191.This structure is equivalent to the relative position of the sensitive switch in traditional relay 91 with temperature-compensating sheet 7 exchanged, and promptly sensitive switch 91 has rotated 180 degree along vertical axis.Even be datum line with the crossbeam, sensitive switch is in a side of crossbeam, and pedestal is just at the opposite side of crossbeam so.

The operation principle of this density monitor is based on flexible member C shape pipe 6, utilizes the pressure and temperature of 7 pairs of variations of temperature-compensating sheet to revise, reaction SF ₆The variation of gas density.Promptly at measured medium SF ₆Under the pressure effect of gas, because the effect of temperature-compensating sheet 7 has been arranged, the variation of its density value, force value also changes accordingly, force the not end of C shape 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 pointer 5 again, pursues tested SF ₆The gas density value indicates on scale 4.If leaked gas, its density value drops to a certain degree (reach and report to the police or the locking value), C shape pipe 6 produces accordingly to the right (or claiming downside) displacement, by temperature-compensating sheet 7, make crossbeam 16 to bottom offset, two adjusting rods 141 on the crossbeam 16 just promote corresponding two trigger columns 191, trigger column 191 is just gradually from corresponding sensitive switch 91, in the time of to a certain degree, corresponding sensitive switch 91 contacts are just connected, send corresponding signal (reporting to the police or locking), reach the SF in the equipment such as supervision and control electric switch ₆Gas density makes the electric equipment trouble free service.If its density value has raise, force value also raises accordingly, be elevated to a certain degree, C shape pipe 6 also produces accordingly to left dislocation, by temperature-compensating sheet 7, make crossbeam 16 to top offset, two adjusting rods 141 on the crossbeam 16 are just to left dislocation, and trigger column 191 is just to left dislocation simultaneously, and each trigger column 191 just promotes corresponding sensitive switch 91, its contact just disconnects, and signal (reporting to the police or locking) is just removed.

Because the signal contact of this density monitor adopts sensitive switch 91 forms, moreover the control of sensitive switch 91 contacts all can be controlled by trigger column 191 (or adjusting rod), and trigger column 191 is controlled by adjusting rod 141, and the control of adjusting rod 141 is to be carried out by compensating plate 7 and C shape pipe 6, compensating plate 7 generally is not afraid of vibration, and it only changes with variation of temperature, and the power of C shape pipe 6 is bigger, be difficult for being out of shape or producing displacement because of vibration, its resistance to shock is preferably.And in the relay of the present utility model, in order further to increase resistance to shock, also can increase trigger column 191, then increase contact area again with sensitive switch 91, even the movement arm of sensitive switch 91 is subjected to displacement, or compensating plate 7 and C shape pipe 6 is subjected to displacement, and cause that trigger column 191 is subjected to displacement, because trigger column 191 increases with the movement arm contact area of sensitive switch 91, is exactly to be shifted between them, because this displacement has the limit, in limit range, they also are can be reliably contacted, can not block or break-off, have so just improved the resistance to shock of this relay greatly.In addition, density value has descended, and C shape pipe 6 just moves to right, and until the action of signal (reporting to the police or locking) contact, promptly sensitive switch 91 contacts are connected.Density value descends more, and it is firm more that sensitive switch is just connected, and descends again, and C shape pipe 6 plate 11 that just is positioned is positioned on its scale value, and at this moment, sensitive switch 91 is under the good nature, is completely, in the good connection, is not afraid of vibration.Because sensitive switch 91 is located at the left side (i.e. top) of trigger column 191 and adjusting rod 141, work as SF simultaneously ₆When gas pressure (density) descends, or when not inflating (when not using), trigger column 191 or adjusting rod 141 just can not run into sensitive switch 91, and the right-hand of adjusting rod 141 also stops without any thing, so just can not cause the distortion of temperature-compensating sheet 7 and crossbeam 16, and then just can not cause trueness error.Because if the temperature-compensating sheet 7 and crossbeam 16 right sides have sensitive switch 91 to block, when not inflating, when high temperature, temperature-compensating sheet 7 will with temperature uprise and to the both sides spreading, owing on one side manage 6 motionless and motionless because of C shape, so can only be to sensitive switch 91 direction spreadings, but sensitive switch 91 also is immotile, time remaining has been grown like this, will cause temperature-compensating sheet 7 and crossbeam 16 to deform, and temperature-compensating sheet 7 and crossbeam 16 deform and will influence the control precision of relay, and sensitive switch 91 is arranged on the left side (i.e. top) of trigger column 191 and adjusting rod 141 and has just overcome this problem, this is the innovation of this product maximum, can improve the quality of products greatly.Because to SF ₆Electric equipment, inflation has regulation, is not allow many inflations, so the bottom that just can not cause trigger column 191 and adjusting rod 141 to run into sensitive switch 91 movement arms, and then can not cause temperature-compensating sheet 7 and crossbeam 16 to deform, can guarantee the control precision of relay.The motion arm of sensitive switch is not afraid of yet and has been vibrated in addition, does not have error signal output yet.So just having improved the resistance to shock of this density monitor greatly, is a kind of genuine vibration resistance pointer-type density monitor.Have the advantage of not being afraid of vibration, can not fill silicone oil, overcome the leakage of oil problem fully, can be applied in SF well ₆On the electric equipment.

Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.

Above embodiment is only for the usefulness that the utility model is described, but not to restriction of the present utility model, person skilled in the relevant technique, under the situation that does not break away 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

1, a kind of Shakeproof type sulfur hexafluoride gas density relay, this relay comprise joint, movement, watchcase, printed board, connecting rod, crossbeam, location-plate, C shape pipe, pedestal, fixed head and several corresponding separately sensitive switch and adjusting rods that is provided with,

Described joint is fixed on the watchcase, and movement is fixed on the pedestal, and pedestal and backing plate are fixed in the watchcase together;

Described sensitive switch is welded in the printed board, and printed board is fixed on the fixed head, and fixed head is installed in again on the pedestal, and location-plate is fixed on the movement;

It is characterized in that:

The left side that described each sensitive switch all is arranged on each adjusting rod is the top of each adjusting rod, even is datum line with the crossbeam, and sensitive switch is in a side of crossbeam, and pedestal is just at the opposite side of crossbeam so;