CN201004431Y

CN201004431Y - Vibration resisting pointer SF6 gas density relay with operation arm

Info

Publication number: CN201004431Y
Application number: CNU2006201494508U
Authority: CN
Inventors: 袁海文; 苏丽芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-03-17
Filing date: 2006-09-29
Publication date: 2008-01-09
Anticipated expiration: 2016-09-29

Abstract

The utility model relates to a motion arm shockproof type dial SF6 gas density relay, comprising a casing, and a base, a cassette mechanism, a C-shaped tube, a temperature compensating gauge, a beam, a connecting-rod, one or pairs of correspondingly setting dolly bars and sensitive switches, a printed circuit board and a dead plate which are arranged in the casing, the sensitive switches are respectively connected with a motion arm. The utility model is characterized in that the contacting part between the front end of each motion arm and the dolly bar is arranged to be a rectangle plate which is 4.4 to 8mm in width. The utility model enables to avoid the displacements of the switch operating arm and the dolly bar when an on and off of switch has a vibration, making the dolly bar not have the phenomenon that the dolly bar is clamped down or secedes from the sensitive switch, ensuring the system to work reliably, and greatly increasing the vibration-proof performance of the product.

Description

Operating arm anti-vibration pointer type SF 6Gas density relay

Technical field

The utility model relates to a kind of relay, relates in particular to a kind of SF of being applied in ₆Operating arm anti-vibration pointer type SF on the electric equipment ₆Gas density relay.

Background technology

SF ₆Electric product has been widely used in power department, and industrial and mining enterprises have promoted the fast development of power industry.Guarantee SF ₆The reliable and secure operation of electric product has become one of vital task of power department.SF ₆The arc-extinguishing medium of electric product and dielectric are SF ₆Gas can not leak gas, if leak gas, just can not guarantee SF ₆The reliable and secure operation of electric product.So monitoring SF ₆The SF of electric product ₆Density value is very necessary.Be used for monitoring SF now ₆Density generally adopts a kind of pointer density monitor of machinery, has the SF of working as ₆Can report to the police and blocking function when gas leakage takes place electric product, also have the performance of on-the-spot display density value.The density monitor contact that uses mainly adopts electric contact type and sensitive switch type at present, and electric contact type density monitor generally will fill the silicone oil that antivibration is used, so regular meeting's generation oil leakage phenomenon, brings loss to the user.One of problem that the no oil type density monitor of sensitive switch type exists is, the motion arm front end of the sensitive switch that is adopted can have only 4.1mm with the width of adjusting rod contact site, the both sides of the front end of motion arm and adjusting rod contact site respectively are provided with a baffle plate, it highly has only 2.2mm, this structure is when the judder of switch breaking-closing operating, be easy to cause the displacement of switching manipulation arm and adjusting rod, and adjusting rod is blocked or break away from the phenomenon of sensitive switch motion arm, can not guarantee system's reliably working.In case this thing happens, have only and change relay again, cause direct economic loss to the user.So it is good to develop a kind of performance, the good pointer SF of its resistance to shock especially ₆Gas density relay is very important.

Summary of the invention

The purpose of this utility model is to solve the problems referred to above that prior art exists, and a kind of operating arm anti-vibration pointer type SF is provided ₆Gas density relay is used for control and monitors airtight container SF ₆The density of gas is at SF ₆The gas leakage situation that occurs in the electric equipment is in time sent alarm signal, and block signal is for ensureing that electric power safety plays effect.

The purpose of this utility model is achieved in that a kind of operating arm anti-vibration pointer type SF ₆Gas density relay, comprise housing and be arranged on adjusting rod and sensitive switch, printed circuit board and the fixed head that pedestal, movement, C shape pipe, temperature-compensating sheet, crossbeam, connecting rod, one or more correspondence separately in the housing are provided with, on three sensitive switches, be connected with three motion arms respectively, be characterized in, the position that described each motion arm front end can contact with adjusting rod is set to rectangular flat, and the width of this rectangular flat is 4.4-8mm.

The length of described rectangular flat reaches its front end and exceeds adjusting rod 5-10mm.

The front end of described rectangular flat is provided with a baffle plate.

The both sides of described rectangular flat are provided with two blocks of side plates.

The front end of described rectangular flat is provided with a baffle plate, and the both sides of rectangular flat are provided with two blocks of side plates, and biside plate can limit the semi enclosed area that adjusting rod breaks away from motion arm with baffle plate in one of the tripartite common formation of rectangular flat.

Described sensitive switch has one to four, and the corresponding adjusting rod that is provided with also has one to four.

The utility model operating arm anti-vibration pointer type SF ₆Gas density relay is owing to increased the width of motion arm, and also can increase the length of motion arm on this basis, or set up baffle plate at the both sides and/or the front end of motion arm, can be when the switch divide-shut brake produces vibration, avoid causing the displacement of switching manipulation arm and adjusting rod, and make adjusting rod can not block or break away from the phenomenon of sensitive switch, guarantee system's reliably working.

Description of drawings

Fig. 1 is the utility model operating arm anti-vibration pointer type SF ₆The structural representation of gas density relay;

Fig. 2 is the partial side view of structure shown in Figure 1;

Fig. 3 is the partial enlarged drawing of Fig. 1.

Embodiment

Referring to Fig. 1, Fig. 2 and Fig. 3.The utility model operating arm anti-vibration pointer type SF ₆Gas density relay comprises SF ₆Gas connection 1, movement 2, housing 3, dial 4, pointer 5, C shape pipe 6, temperature-compensating sheet 7, junction block 8, printed circuit board 10, location-plate 11, fixed head 12, electric wire 13, connecting rod 15, crossbeam 16, watch crystal 17, cover circle 18, pedestal 19, SF ₆ Air shooter 20 and one to four corresponding separately sensitive switch and the adjusting rod that is provided with, present embodiment is three, i.e. sensitive switch among the figure 91,92,93 and adjusting rod 141,142,143.Wherein, SF ₆Gas connection 1, junction block 8, watch crystal 17, cover circle 18 and pedestal 19 are separately fixed on the housing 3.Movement 2 is fixed on the pedestal 19, and pointer 5 and dial 4 are separately fixed on the movement 2.One end of C shape pipe 6 is welded on the pedestal 19 and is communicated with it, 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, and crossbeam 16 is connected with connecting rod 15 again, and connecting rod 15 is connected with movement 2.Be fixed with adjusting rod 141,142,143 on the crossbeam 16.Sensitive switch 91,92,93 is welded on respectively on the printed circuit board 10, and printed circuit board 10 is installed on the fixed head 12, and fixed head 12 is installed in again on the pedestal 19.Sensitive switch 91 is fixed on the below of adjusting rod 141, and sensitive switch 92 is fixed on the below of adjusting rod 142, and sensitive switch 93 is fixed on the below of adjusting rod 143.Be respectively equipped with motion arm 911,921,931 on each sensitive switch.Location-plate 11 is fixed on the movement 2, and its front end extends to the below of C shape pipe 6 ends that link to each other with temperature-compensating sheet 7, and its function is: work as SF ₆When gas density dropped to certain value, spacing C shape pipe 6 moved down, the protection sensitive switch, and then protection crossbeam 16 do not damaged by pressure and is out of shape, and makes whole system keep reliably working.The contact of sensitive switch by electric wire 13, is connected on the junction block 8 from printed circuit 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 dirt, rainwater are invaded.SF ₆One end of air shooter 20 is connected with pedestal 19, and positiver sealing, SF ₆The other end of air shooter 20 is connected with joint 1, and positiver sealing.

In order to prevent the situation generation that adjusting rod breaks away from motion arm, the utility model is arranged to the rectangular flat that width is 4.4-8mm with the position that the front end of three motion arms 911,921,931 can contact with adjusting rod, on this basis, following variation can also be arranged: the first becomes its front end to exceed adjusting rod 5-10mm (under the non operating state) Design of length of this rectangular flat.It two is to add on the basis of length at above-mentioned width or width, and the front end at rectangular flat is provided with a baffle plate A (as shown in the figure) again.It three is to add on the basis of length at above-mentioned width or width, and two blocks of side plates are set in the both sides of rectangular flat again.It four is to add on the basis of length at above-mentioned width or width, while is provided with a baffle plate at the front end of rectangular flat again, two blocks of side plates are set in the both sides of rectangular flat, and biside plate can limit the semi enclosed area that adjusting rod breaks away from motion arm with baffle plate in one of the tripartite common formation of rectangular flat.

The utility model since increased motion arm can with the width of adjusting rod contact site, its width increases to 4.4-8mm by original 4.1mm, and increased the length of motion arm on this basis, and set up a baffle plate at the both sides and/or the front end of motion arm, jointly constitute one with biside plate at the front end of motion arm by this baffle plate and can limit the semi enclosed area that adjusting rod breaks away from motion arm.So, when the switch divide-shut brake produces vibration,, also can avoid causing the displacement of switching manipulation arm and adjusting rod, and make adjusting rod can not block or break away from the phenomenon of sensitive switch, guarantee system's reliably working even crossbeam axially or radially is being shifted.Improved the resistance to shock of product greatly.

The utility model operating arm anti-vibration pointer type SF ₆The action principle of gas density relay 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 end of C shape pipe 6 to produce corresponding strain one displacement,, pass to movement 2 by means of temperature-compensating sheet 7 and connecting rod 15, movement 2 passes to pointer 5 again, satisfies tested SF ₆The gas density value indicates on dial.Density monitor just can be SF like this ₆Density value has shown.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 bottom offset, by temperature-compensating sheet 7, make crossbeam 16 to bottom offset, adjusting rod 141,142,143 on the crossbeam 16 just promotes corresponding sensitive switch 91,92,93 contacts and connects, and sends corresponding signal (reporting to the police or locking), reaches 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 top offset, by temperature-compensating sheet 7, makes crossbeam 16 to top offset, adjusting rod 141,142,143 on the crossbeam 16 is just to top offset, adjusting rod 141,142,143 is just away from sensitive switch 91,92,93, and its contact just disconnects, and signal (reporting to the police or locking) is just removed.So just finish the function of density monitor.

Because the utility model operating arm anti-vibration pointer type SF ₆The signal contact of gas density relay adopts the sensitive switch form, moreover the control of sensitive switch contact is all controlled by adjusting rod, and the control of adjusting rod is carried out by compensating plate 7 and C shape pipe 6, compensating plate 7 generally is not afraid of vibration, it only changes with variation of temperature, and the power of C shape pipe is bigger, and resistance to shock is better, is difficult for being out of shape or producing displacement because of vibration.The most important thing is, in order to increase resistance to shock, the utility model has increased the width of motion arm, the width of motion arm is increased to 4.4-8mm by original 4.1mm, and increased the length of motion arm on this basis, and set up a baffle plate at the both sides and/or the front end of motion arm, jointly constitute one with biside plate at the front end of motion arm by this baffle plate and can limit the semi enclosed area that adjusting rod breaks away from motion arm.When the switch divide-shut brake produces vibration, even crossbeam axially or radially is being shifted, can prevent that also adjusting rod from blocking or breaking away from the phenomenon of sensitive switch, guarantee system's reliably working, so just improved the resistance to shock of this product greatly.In addition, SF ₆After the density value of gas descended, C shape pipe 6 just moved down, and until the action of signal (reporting to the police or locking) contact, promptly the sensitive switch contact is connected.Density value descends more, and it is firm more that sensitive switch is just connected, and descends again, C shape pipe 6 plate 11 that just is positioned is positioned on its scale value, and at this moment, C shape pipe 6 is used on the sensitive switch with bigger masterpiece, sensitive switch is under the good pressure and in the good connection, is not afraid of vibration.

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.The position that can contact with adjusting rod as each motion arm front end is set to the non-rectangle flat board, and is arranged to other shape, but the width of its effective contact site is 4.4-8mm; Also can be fixed on the top (being other direction) of adjusting rod as sensitive switch.

Claims

1, a kind of operating arm anti-vibration pointer type SF ₆Gas density relay, comprise housing and be arranged on adjusting rod and sensitive switch, printed circuit board and the fixed head that pedestal, movement, C shape pipe, temperature-compensating sheet, crossbeam, connecting rod, one or more correspondence in the housing are provided with, on each sensitive switch, be connected with a motion arm respectively, it is characterized in that: the position that described each motion arm front end can contact with adjusting rod is set to rectangular flat, and the width of this rectangular flat is 4.4-8mm.

2, operating arm anti-vibration pointer type SF as claimed in claim 1 ₆Gas density relay is characterized in that: the length of described rectangular flat reaches its front end and exceeds adjusting rod 5-10mm.

3, operating arm anti-vibration pointer type SF as claimed in claim 1 or 2 ₆Gas density relay is characterized in that: the front end of described rectangular flat is provided with a baffle plate.

4, operating arm anti-vibration pointer type SF as claimed in claim 1 or 2 ₆Gas density relay is characterized in that: the both sides of described rectangular flat are provided with two blocks of side plates.

5, operating arm anti-vibration pointer type SF as claimed in claim 1 or 2 ₆Gas density relay, it is characterized in that: the front end of described rectangular flat is provided with a baffle plate, the both sides of rectangular flat are provided with two blocks of side plates, and biside plate can limit the semi enclosed area that adjusting rod breaks away from motion arm with baffle plate in one of the tripartite common formation of rectangular flat.

6, operating arm anti-vibration pointer type SF as claimed in claim 1 or 2 ₆Gas density relay is characterized in that: described sensitive switch has one to four, and the corresponding adjusting rod that is provided with also has one to four.