CN102305887A

CN102305887A - Discharging current counter

Info

Publication number: CN102305887A
Application number: CN201110149244A
Authority: CN
Inventors: 李林友; 冯海涛; 李上保; 林秀; 陈声富
Original assignee: Zhanjiang High Voltage Appliance Co ltd
Current assignee: Zhanjiang High Voltage Appliance Co ltd
Priority date: 2011-06-03
Filing date: 2011-06-03
Publication date: 2012-01-04
Anticipated expiration: 2031-06-03
Also published as: CN102305887B

Abstract

The invention discloses a discharging current counter comprising a shell, wherein one end close to an observation port in the shell is provided with a digital display wheel with a gear, and the other end is provided with U-shaped electrician pure iron; the middle in the shell is provided with a switching plate by a first shaft; the switching plate is provided with a driving tooth, a locking tooth, a control slot and a suction surface; a reset spring is arranged between the switching plate and the shell; the shell is internally provided with a control rod matched with the control slot; positions corresponding to U-shaped electrician pure iron groove on the top and bottom of the shell are provided with long holes; a conducting plate penetrates through the long holes and the U-shaped electrician pure iron slot and is fixed with the shell by a supporting plate; and the two sides of the conducting plate in the shell are provided with second insulating plates. The discharging current counter has the advantages of simple structure and stable and reliable property, dose not need power supply, cannot be interfered and can count effective action discharge of a multi-action discharge protector.

Description

The discharge current counter

Technical field

The present invention relates to the discharge current counter, be applicable to the action frequency record of repeatedly action discharge prevention device (is the repeatedly action discharge prevention device of ZL91233112.7 like the patent No.) discharge in the contact nets in electrified railways earthed system.

Background technology

When contact nets in electrified railways electric power system failed because, the repeatedly action discharge prevention device of contact net earthed system discharge ground connection is accomplished the protection process.Because the effective action discharge time of discharge prevention device of repeatedly moving is limited in six times, surpass six times and promptly need change this discharge prevention device, therefore need count repeatedly moving the effective action discharge of discharge prevention device.

Summary of the invention

The purpose of this invention is to provide a kind of simple in structurely, interference-free, need not power supply, the discharge current counter of dependable performance is to count repeatedly moving the effective action discharge of discharge prevention device reliably.

Discharge current counter of the present invention; Comprise an end band viewport; Top and bottom are the housing of insulcrete; The numeral of an end mounting strap gear of close said viewport shows wheel in the housing; The other end is installed the U-shaped electrical pure iron; The middle part is installed through first and is dialled plate in the housing; Said group of plate has the driving gear that drives said gear rotation; Locking teeth to said gear position locking; Control the control flume of the each rotational angle of said gear; And be used for the adhesive face that cooperates with said U-shaped electrical pure iron; Dial to be provided between plate and the housing making and dial the back-moving spring that plate is swung to the direction that locks said gear; The control lever that cooperates with said control flume is set in the housing; The top of housing and the bottom position corresponding with the groove of said U-shaped electrical pure iron is provided with slotted hole; One current-carrying plate runs through the groove of said slotted hole and U-shaped electrical pure iron and fixes through back up pad and housing, in the both sides of said current-carrying plate second insulcrete is set in the housing.When used to counter the discharge current in series with the multiple conductive plates discharge operation of the discharge circuit protector, the protector when the plurality of times the breakdown discharge, the discharge current flows through the counter electrically conductive plate, U-shaped electric iron electromagnetic field generated around the dial plate produce suction, dial plate against the return spring tension and swing to lock tooth with digital display on the gear wheel separation, drive gear meshing with said gear and drive gear, while the dial plate groove and the corresponding control lever with the control dial plate swing angle, thereby controlling the angle of rotation of the gear, to ensure that each discharge wheel rotation figures show a grid, enabling the discharge count; repeated action over discharge protection after discharge discharge circuit current disappears, U-shaped electromagnetic force generated by electrical iron reduced or dissipated, under the action of the return spring, dial plate reverse swing, drive gear and the gear separated from the lock teeth meshing with the gear, the gear position lock.

Further, can be provided for regulating the adjusting screw(rod) of the distance between the U-shaped electrical pure iron and the said group of plate at the closing end of said U-shaped electrical pure iron, this adjusting screw(rod) passes said housing.Through regulating the distance between the U-shaped electrical pure iron and the said group of plate, can make a kind of discharge current counter of model can be used on the occasion of different discharge currents, like 3kA, 5kA, 10kA etc., improved the versatility of discharge current counter.

This discharge current counter structure is simple, need not power supply, and is interference-free, stable and reliable for performance, can be accurately and reliably counts repeatedly moving the effective action discharge of discharge prevention device.Can be used for repeatedly moving in the various holding circuits discharging action counting of discharge prevention device, be particularly suitable for the discharging action counting that repeatedly moves the discharge prevention device in the contact nets in electrified railways earthed system.

Description of drawings

Fig. 1-4 is the structural representation of embodiment discharge current counter, and wherein Fig. 1 is a front view, and Fig. 2 is a left view, and Fig. 3 is a rear view, and Fig. 4 is a vertical view.

Fig. 5 is the A-A cut-open view of Fig. 1.

Fig. 6 is the B-B cut-open view of Fig. 2.

Fig. 7-8 is the structural representation that its numeral shows wheel, and wherein Fig. 7 is a front view, and Fig. 8 is a right view.

Fig. 9-11 is the structural representation of its group plate, and wherein Fig. 9 is a front view, and Figure 10 is a left view, and Figure 11 is a vertical view.

The structural representation of its U-shaped electrical pure iron of Figure 12-13, wherein Figure 12 is a front view, Figure 13 is a left view.

Figure 14 uses synoptic diagram for it.

Figure 15 is its application principle figure.

Embodiment

Below in conjunction with accompanying drawing and embodiment the present invention is further specified.

With reference to Fig. 1-13, this discharge current counter comprises that housing 1, numeral show wheel 2, dial plate 4, back-moving spring 6, current-carrying plate 7 and U-shaped electrical pure iron 9.

Housing 1 one end band viewports 11; The top 12 and the bottom 13 of housing 1 are insulcrete; Through second 24 numeral is installed near an end of said viewport 11 in the housing 1 and shows wheel 2; The other end is installed U-shaped electrical pure iron 9; Said numeral shows that wheel 2 has the gear coaxial with it 22; The middle part is installed through first 5 and is dialled plate 4 in the housing 1; Said group of plate 4 has the driving gear 41 that drives said gear 22 rotations; Locking teeth 42 to said gear 22 locking positions; Control the control flume 43 of said gear 22 each rotational angles; And be used for the adhesive face 44 that cooperates with said U-shaped electrical pure iron 9; Dial between plate 4 and the housing 1 back-moving spring 6 is set; Back-moving spring 6 is used to provide the power of plate 4 to the direction swing of the said gear 22 of locking of dialling that makes; The control lever 3 (this control lever 3 also is the peg of back-moving spring 6) that cooperates with said control flume 43 is set in the housing 1; The top 12 and the bottom 13 of housing 1 are provided with slotted hole 12 ' with the groove 91 corresponding positions of said U-shaped electrical pure iron 9; Current-carrying plate 7 runs through the groove 91 of said slotted hole 12 ' and U-shaped electrical pure iron 9 and fixes through back up pad 8 and housing 1, in the both sides of said current-carrying plate 7 second insulcrete 7 ' is set in the housing 1.Can the backstop bayonet socket be set at second insulcrete 7 ', through realizing backstop bayonet socket and cooperating of slotted hole 12 ' edge the assembling of second insulcrete 7 ' and housing 1.

The closing end 92 of U-shaped electrical pure iron 9 has the adjusting screw(rod) 93 that is used to regulate the distance H between the U-shaped electrical pure iron 9 and the said group of plate 4; This adjusting screw(rod) 93 passes the end 14 of said housing 1; Can regulate the distance H between the U-shaped electrical pure iron 9 and the said group of plate 4 through rotation adjusting screw rod 93, can make this discharge current counter be applicable to the occasion of different discharge currents.Exemplary embodiments is through the position of change adjusting screw(rod) 93, applicable to the occasion of 3-10KA discharge current.

Dial plate 4 and contain a U-lag 40; The trench bottom of U-lag 40 is said adhesive face 44; The upper and lower of a cell wall 45 of U-lag 40 extends to form diminishing first adjutage 46 of width and second adjutage 47 along the direction away from bottom land respectively; The length of first adjutage 46 is greater than the length of second adjutage 47; The end of first adjutage 46 extends to form said driving gear 41 downwards; The end of second adjutage 47 extends upward and forms said locking teeth 42; The root edge place of second adjutage 47 is provided with said control flume 43; The upper end of 40 two cell walls of U-lag is provided with axis hole 48, and the lower end of U-lag 40 bottom lands is provided with the hanging hole 49 of back-moving spring 6.

Numeral shows that wheel 2 contains main wheel 21, and the periphery of main wheel 21 is provided with coding, and the two ends of main wheel 21 set firmly said gear 22 and weighting distribution wheel 23 respectively, and said gear 22 is all coaxial with main wheel 21 with weighting distribution wheel 23.In the exemplary embodiments, gear 22 has ten teeth, the periphery of said main wheel 21 be encoded in turn the numeral 0 to 9 of arranging.

The upper limb and the lower edge of the biside plate 15,16 of housing 1 have outside flanging, and said flanging is used for top board and the assembling of base plate and housing 1 side plate and the assembling of back up pad 8 and housing 1 of housing 1.

Figure 14 is the application synoptic diagram of this discharge current counter.Figure 15 is its application principle figure.Wherein represent repeatedly to move the discharge prevention device with 100; 300 this discharge current of expression counters; The discharge prevention device 100 that repeatedly moves is fixed on the installing plate 200; The terminals 101 of discharge prevention device 100 of repeatedly moving are current input terminal; Another terminals are connected with the upper end of the current-carrying plate 7 of this discharge current counter 300, the lower end ground connection of current-carrying plate 7.

When a plurality of times the breakdown discharge protection device 100, the discharge current flows through the conductive plate 300 of the counter 7, U-shaped electric iron 9 of the electromagnetic field generated around the dial plate 4 produce suction, the suction of the dial plate 4 against the return The tension spring 6 and swings around the first shaft 5 so that the lock tooth 42 and the digital display 22 a gear wheel 2 separate drive gear 41 meshed with the gear 22 and drive gear 22 rotate counterclockwise in Fig 5, On the other hand, the control dial plate 4 and the corresponding groove 43 with the control lever 3 of the swing angle dial plate 4, thereby controlling the angle of rotation of the gear 22, to ensure that each discharge figures show a grid wheel 2 is rotated, in order to achieve on the discharge count; repeated action over discharge protection device 100 discharges disappeared after discharge circuit current, U-shaped electrical iron 9 generate electromagnetic fields to reduce or subside under the action of the return spring 6, dial plate 4 reverse (ie Figure 5 clockwise) swings, the drive gear 22 with the teeth 41 separated, the locking teeth 42 meshing with the gear 22, the position of the lock gear 22, the digital display wheel 2 is held in the rotated position.When repeatedly moving the puncture 100 next time of discharge prevention device, repeat said process.

The size that flows through the discharge current of current-carrying plate 7 can influence the power of the electromagnetic field that produces around the U-shaped electrical pure iron 9, it whether determined can to dial plate 4 produce pulling force that enough suction removes to overcome said back-moving spring 6 make dial plate 4 swings go to drive numeral shows that wheel 2 rotates and behind counting counter whether can in time reset.U-shaped electrical pure iron 9 in the present embodiment is provided with adjusting screw(rod) 93; Can regulate the distance H between the U-shaped electrical pure iron 9 and the said group of plate 4; When the discharge current of application site hour; Turn the distance H between the said U-shaped electrical pure iron 9 and the said group of plate 4 down; Make U-shaped electrical pure iron 9 produce the pulling force that enough suction removes to overcome said back-moving spring 6 to dialling plate 4; Drive and dial plate 4 swings, and then the driving numeral shows that wheel 2 rotates the completion counting; When the discharge current of application site is big, transfer the distance H between the big said U-shaped electrical pure iron 9 and the said group of plate 4, counter can in time be resetted behind counting.Therefore can be applicable to the occasion of different discharge currents.

Claims

1. discharge current counter; It is characterized in that: comprise an end band viewport (11); Top (12) and bottom (13) are the housing (1) of insulcrete; The numeral of an end mounting strap gear (22) of close said viewport shows wheel (2) in the housing (1); The other end is installed U-shaped electrical pure iron (9); The middle part is installed through first (5) and is dialled plate (4) in the housing (1); Said group of plate (4) has the driving gear (41) that drives said gear (22) rotation; Locking teeth (42) to said gear (22) locking position; Control the control flume (43) of the each rotational angle of said gear (22); And be used for the adhesive face (44) that cooperates with said U-shaped electrical pure iron (9); Dial to be provided between plate (4) and the housing (1) making and dial the back-moving spring (6) that plate (4) is swung to the direction that locks said gear (22); The control lever (3) that cooperates with said control flume (43) is set in the housing (1); The top of housing (1) and bottom are provided with slotted hole (12 ') with the corresponding position of groove (91) of said U-shaped electrical pure iron (9); One current-carrying plate (7) runs through the groove (91) of said slotted hole (12 ') and U-shaped electrical pure iron and passes through back up pad (8; 8 ') fixing with housing (1), in the both sides of said current-carrying plate (7) second insulcrete (7 ') is set in the housing.

2. discharge current counter according to claim 1; It is characterized in that: the closing end (92) of said U-shaped electrical pure iron (9) has the adjusting screw(rod) (93) that is used to regulate the distance between U-shaped electrical pure iron and the said group of plate (4), and this adjusting screw(rod) (93) passes said housing.

3. discharge current counter according to claim 1; It is characterized in that: said group of plate (4) contains a U-lag (40); The trench bottom of U-lag (40) is said adhesive face (44); The upper and lower of a cell wall (45) of U-lag extends to form diminishing first adjutage of width (46) and second adjutage (47) along the direction away from bottom land respectively; The length of first adjutage is greater than the length of second adjutage; The end of first adjutage extends to form said driving gear (41) downwards; The end of second adjutage extends upward and forms said locking teeth (42); The root edge place of second adjutage is provided with said control flume (43); The upper end of (40) two cell walls of U-lag is provided with axis hole (48), and the lower end of U-lag (40) bottom land is provided with the hanging hole (49) of said back-moving spring (6).

4. discharge current counter according to claim 1; It is characterized in that: said numeral shows that wheel (2) contains main wheel (21); The periphery of main wheel (21) is provided with coding; The two ends of main wheel (21) set firmly said gear (22) and weighting distribution wheel (23) respectively, and said gear and weighting distribution wheel and main wheel are coaxial.

5. discharge current counter according to claim 4 is characterized in that: said gear (22) has ten teeth, the periphery of said main wheel (21) be encoded in turn the numeral 0 to 9 of arranging.

6. discharge current counter according to claim 1 is characterized in that: the upper limb and the lower edge of the biside plate of said housing (1) (15,16) have outside flanging.