CN201611624U - Direct-current isolating switch - Google Patents
Direct-current isolating switch Download PDFInfo
- Publication number
- CN201611624U CN201611624U CN2009203162500U CN200920316250U CN201611624U CN 201611624 U CN201611624 U CN 201611624U CN 2009203162500 U CN2009203162500 U CN 2009203162500U CN 200920316250 U CN200920316250 U CN 200920316250U CN 201611624 U CN201611624 U CN 201611624U
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- CN
- China
- Prior art keywords
- connecting rod
- moving contact
- switch
- isolating switch
- ground cutter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a direct-current isolating switch which comprises a bracket; an isolating switch part and a grounding switch are respectively arranged on the bracket; the grounding switch comprises a moving contact part and a static contact part; the static contact part is installed at the lower end of a wiring seat at the top end of a direct-current post insulator; the moving contact part comprises a grounding knife connecting rod with a petaloid structure at the tail end and a moving contact connected on the grounding knife connecting rod through a wedge type structure; the wedge type structure comprises a wedge-shaped pressing block, a connecting block and a screw; the connecting block is fixedly connected on the grounding knife connecting rod through a pin shaft; a counter bore is formed on the wedge-shaped pressing block; a threaded hole is formed on the connecting block; and the screw penetrates the wedge-shaped pressing block to cause the moving contact to be connected with the grounding knife connecting rod through the wedge type structure adopted in the direct-current isolating switch. The direct-current isolating switch is simple in structure and reliable and practical, can meet the requirements of former electrical connection, ensure convenient disassembly of the moving contact and the grounding knife connecting rod during the trouble shooting process and further improve the maintenance efficiency.
Description
Technical field
The utility model relates to a kind of DC-isolation switch, particularly a kind of DC-isolation switch that is used for the low-pressure side of high voltage power transmission and transformation.
Background technology
The patent No. is to disclose a kind of like this ac high-voltage isolating switch in 200720028048.9 the Chinese patent specification, this isolating switch comprises isolating switch part and earthed switch, isolating switch partly is upright queen post structure, it comprises two post insulators, two post insulator upper ends are provided with junction block, two junction blocks are connected with fingertip and contact respectively, and contact and fingertip constitute electric connection structure; Described earthed switch comprises fixed contact and moving contact, and fixed contact is arranged on the lower end of post insulator upper end junction block, and moving contact is by ground cutter connecting rod, space four-links, makes on the moving contact pendulum chimeric with fixed contact.
Moving contact adopts welding manner to be fixedly connected on the ground cutter connecting rod, and this structure is dismantled inconvenience when trouble hunting, and when the junction goes wrong, must change entirely cutter connecting rod and moving contact, and cost is higher.
The utility model content
The purpose of this utility model provides a kind of DC-isolation switch, the problem of dismounting inconvenience between moving contact and the ground cutter connecting rod when solving DC-isolation switch fault maintenance in the prior art.
The technical solution of the utility model is: a kind of DC-isolation switch, comprise bearing, be installed with isolating switch part and earthed switch on the described bearing, described earthed switch comprises moving contact part and fixed contact part, this fixed contact partly is installed in the lower end of the junction block on described direct current post insulator top, described moving contact partly comprises ground cutter connecting rod and moving contact, it is characterized in that: the end of described ground cutter connecting rod is a valvular structure, described moving contact is fixedly connected on the ground cutter connecting rod by the Wedge-type structure, described Wedge-type structure comprises the wedge shape briquetting, contiguous block and screw, described contiguous block is fixedly connected on the ground cutter connecting rod by bearing pin, have counterbore on the described wedge shape briquetting, have screwed hole on the described contiguous block, described screw runs through the wedge shape briquetting and is threaded with contiguous block.
Described isolating switch partly comprises two direct current post insulators, two direct current post insulator tops respectively are provided with a junction block, two junction blocks respectively are connected with contact part and fingertip part, described each junction block comprises the first al wiring seat and the second al wiring seat, be connected with soft conductive strips between the described two al wiring seats, two al wiring seats and soft conductive strips external seal have guard shield, described contact part or fingertip part are connected with the second al wiring seat by conductive plate, the junction of the described conductive plate and the second al wiring seat is installed with fin, and this fin is fixedlyed connected with the conductive plate and the second al wiring seat by trip bolt.
Described bearing is provided with two earthed switches, is provided with main ground cutter interlock between the described pair of earthed switch and the isolating switch part.
Adopt the Wedge-type structure that moving contact is connected with ground cutter connecting rod in the utility model DC-isolation switch, simple in structure, reliable and practical, electrical connection requirement before satisfying, and when trouble hunting, moving contact and ground cutter connecting rod can easily be taken apart, and if the part when going wrong, can be changed member separately, reduce production cost like this, improved overhaul efficiency.
Adopt guard shield butted line seat to seal in junction block equipment part, can avoid birds to do nest effectively, set up fin, can guarantee to dispel the heat effectively, guarantee the normal useful life of components and parts
The utility model DC-isolation switch adopts two earthed switches, improved the security and stability of whole system, between isolating switch part and two earthed switch, adopt mechanical interlock, it is active in one's movements reliably, can guarantee effectively that earthed switch is failure to actuate when the isolating switch operator is closed a floodgate, isolating switch was failure to actuate when earthed switch closed a floodgate, and had so just eliminated the potential safety hazard of DC-isolation switch.Guarantee that earthed switch is connected when disconnecting isolating switch, and make both reliable interlockings, entire equipment is not charged when making repair apparatus, and leads away residual charge, guarantees safety of workers.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the B place enlarged drawing among Fig. 2;
Main ground cutter interlocking device schematic diagram when Fig. 4 closes a floodgate ground cutter separating brake for operator in the utility model;
Main ground cutter interlocking device schematic diagram when Fig. 5 closes a floodgate for the separating brake ground cutter of operating in the utility model;
Fig. 6 is an A-A place cutaway view among Fig. 1.
Embodiment
Fig. 1, Figure 2 shows that structural representation of the present utility model, the DC-isolation switch comprises bearing 14, be installed with the isolating switch part on the bearing 14, earthed switch 9 and main ground cutter interlock 7, described isolating switch partly comprises two direct current post insulators 4, two direct current post insulator 4 tops respectively are equipped with a junction block 1, be respectively fitted with a contact part 3 and a fingertip part 2 in the installing hole of two junction blocks 1, the bottom of two direct current post insulators 4 is equipped with rotating shaft holder 5, one of them direct current post insulator 1 directly connects with operator axle 10, is provided with kinematic link 13 between two direct current post insulators 4.Earthed switch 9 comprises fixed contact 20 that is located at junction block 1 bottom and the moving contact 22 of fixedlying connected with ground cutter connecting rod 21 by the Wedge-type structure, ground cutter connecting rod 21 is with connecting by bearing pin between the rocking arm 25; rocking arm 25 is hinged with connecting lever connecting rod 24; connecting lever connecting rod 24 is fixedly connected with an end of grounded bracket 23 by bolt 29, and the other end of grounded bracket 23 is fixedly connected on ground, the left side cutter shaft 12.Operator axle 10 is connected with ground, left side cutter shaft 12 electric operating mechanism all direct and separately, and described main ground cutter interlock 7 is installed on operator axle 10, left ground cutter shaft 12 and the right ground cutter shaft 11.
Figure 3 shows that the structural representation of earthed switch moving contact part Wedge-type, described Wedge-type structure comprises moving contact 22, wedge shape briquetting 31, contiguous block 35 and attachment screw 33, moving contact 22 is sleeved on the valvular structure 37 of ground cutter connecting rod 21 ends, there is the seam of axial location effect together moving contact 22 inside, described contiguous block 35 is fixedly connected on the ground cutter connecting rod 21 by bearing pin 34, have counterbore on the described wedge shape briquetting 31, have screwed hole on the contiguous block 35, described attachment screw 33 runs through wedge shape briquetting 31 and is threaded with contiguous block 35.During use attachment screw 33 is screwed, the stretching valvular structure 37 by extruding wedge shape briquetting 31, thus moving contact 22 is fixed on the ground cutter connecting rod 21.
When needs close a floodgate earthed switch, electric operating mechanism is handled ground, left side cutter shaft 12 and is rotated, the grounded bracket 23 that drive is installed on ground, the left side cutter shaft 12 rotates, this grounded bracket 23 by connecting lever connecting rod 24 and rocking arm 25 drive ground cutter connecting rods 21 in vertical plane on pendulum, shown in dotted portion among Fig. 2, the moving contact 22 that is installed in ground cutter connecting rod 21 ends then is electrically connected with fixed contact 20 formations of the junction block bottom of direct current post insulator upper end, thereby is grounded the combined floodgate of switch.
What adopt in this embodiment is the optimal way of two ground connection, promptly is symmetrically arranged with the identical ground structure of two covers on the isolating switch both sides, and two cover ground structures are provided with back-to-back.In the specific implementation, also can adopt single ground connection, promptly only adopt a cover ground structure to match with isolating switch.
Fig. 4, Figure 5 shows that in the utility model main ground cutter interlock, described main ground cutter interlock 7 comprises operator interlock plate 40, connecting rod 48 and ground cutter interlock plate 44, described operator interlock plate 40 1 ends and connecting rod 48 are connected by bolt, the other end is provided with first bearing pin 42, also be provided with first mounting hole 43 on the operator interlock plate, be installed with operator axle 10 in first mounting hole 43, one is installed with operator interlock block 41 on the described operator axle 10, and this operator interlock block 41 is provided with first groove 410 that matches with first bearing pin 42; Described ground cutter interlock plate 44 1 ends and connecting rod 48 are bolted to connection, the other end is provided with second bearing pin 46, also be provided with second mounting hole 47 on the described ground cutter interlock plate 44, be installed with right ground cutter shaft 11 in this second mounting hole 47, one is installed with ground cutter interlock block 45 on this ground cutter shaft, and ground cutter interlock block 45 is provided with second groove 450 that matches with second bearing pin 46.Being illustrated in figure 4 as operator close a floodgate back and interlock signal behind the ground cutter separating brake, first bearing pin 42 is squeezed on the outer of operator interlocking segment 41, and second bearing pin 46 is locked with second groove 450 on the ground cutter interlock block 45, ground cutter akinesia, this moment, the center line of first groove 410 and second groove 450 vertically became 90 ° mutually.Be illustrated in figure 5 as operator behind the separating brake the interlock signal of cutter after closing a floodgate, first bearing pin 42 is locked with first groove 410 on the operator interlocking segment 41, and second bearing pin 46 is squeezed on the outer of ground cutter interlocking segment 45, the operator akinesia, 90 ° of the vertical mutually one-tenth of two groove 410,450 center lines this moment.
What adopt in this embodiment is two earthed switches, each earthed switch all partly constitutes interlocking with isolating switch, the right ground cutter shaft 11 distance operator axles 10 on right side are far away among Fig. 1, therefore adopted above-mentioned interlocking structure, and ground, the left side cutter shaft 12 distance operator axles 10 in left side are nearer, the interlocking structure that adopts is basic identical with above-mentioned structure, the interlock plate 40 of just will operating, connecting rod 48 and ground cutter interlock plate 44 have been replaced with interlock plate 49, its course of action is consistent with the course of action of the mutual interlocking gear that adopts connecting rod, and the center line that latter two groove is finished in action vertically becomes 90 ° mutually.
The operation principle of main ground cutter interlock: (operator this moment is in the ground cutter that closes a floodgate and is in gate-dividing state in the time need disconnecting isolating switch because of the work reason, and earthed switch is in locking state), disconnect isolating switch by operator electric operating mechanism rotation operator axle 10, first groove 410 on the operator interlocking segment 41 is aimed at first bearing pin 42, this moment, earthed switch began action, right ground cutter shaft 11 drives ground cutter interlock block 45 action in second mounting hole 47, second bearing pin 46 breaks away from second groove 450 on the ground cutter interlock block 45, right ground of rotation cutter shaft 11, rotate near second bearing pin 46 outer on the ground cutter interlocking segment 45, ground cutter interlock plate 44 drives operator interlock plate 40 by connecting rod 48 and moves right together, first bearing pin 42 is locked with second groove 410 on the operator interlocking segment 41 then, isolating switch can not move again, closes a floodgate and the interlocking of isolating switch separating brake thereby be grounded switch.When needs with the earthed switch separating brake and isolating switch when closing a floodgate, the process of its process earthed switch combined floodgate with above-mentioned isolating switch separating brake is opposite.
Figure 6 shows that the structural representation of junction block in the utility model, junction block comprises the first al wiring seat 68, the soft conductive strips 61 and the second al wiring seat 62, be connected with terminal block 65 by soft conductive strips 61 between the two al wiring seats, soft conductive strips 61 and terminal block 65 external seals have guard shield 69, guard shield 69 is bolted to connection the outside at two al wiring seats, be provided with fin 63 at the conductive plate 64 of described contact part 67 or fingertip part 66 and the junction of the second al wiring seat, described fin 63 is fixedlyed connected with the conductive plate 64 and the second al wiring seat 63 by trip bolt.
Isolating switch in the utility model and earthed switch all are connected with electric operating mechanism separately, can realize the interlocking of isolating switch and earthed switch by main ground cutter interlock, after operator lock closure was handled in the electric operating mechanism action of isolating switch, this moment, the electronic actuating structure of earthed switch just can not be handled ground disconnecting link closure.
In the specific implementation, also can adopt manual control mechanism to replace electric operating mechanism in the utility model.
Claims (3)
1. DC-isolation switch, comprise bearing, be installed with isolating switch part and earthed switch on the described bearing, this earthed switch comprises moving contact part and fixed contact part, this fixed contact partly is installed in the lower end of the junction block on described direct current post insulator top, described moving contact partly comprises ground cutter connecting rod and moving contact, it is characterized in that: the end of described ground cutter connecting rod is a valvular structure, described moving contact is fixedly connected on the ground cutter connecting rod by the Wedge-type structure, described Wedge-type structure comprises the wedge shape briquetting, contiguous block and screw, described contiguous block is fixedly connected on the ground cutter connecting rod by bearing pin, have counterbore on the described wedge shape briquetting, have screwed hole on the described contiguous block, described screw runs through the wedge shape briquetting and is threaded with contiguous block.
2. DC-isolation switch according to claim 1, it is characterized in that: described isolating switch partly comprises two direct current post insulators, two direct current post insulator tops respectively are provided with a junction block, two junction blocks respectively are connected with contact part and fingertip part, described each junction block comprises the first al wiring seat and the second al wiring seat, be connected with soft conductive strips between the described two al wiring seats, two al wiring seats and soft conductive strips external seal have guard shield, described contact part or fingertip part are connected with the second al wiring seat by conductive plate, the junction of the described conductive plate and the second al wiring seat is installed with fin, and this fin is fixedlyed connected with the conductive plate and the second al wiring seat by trip bolt.
3. DC-isolation switch according to claim 1 and 2 is characterized in that: described bearing is provided with two earthed switches, is provided with main ground cutter interlock between the described pair of earthed switch and the isolating switch part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203162500U CN201611624U (en) | 2009-11-30 | 2009-11-30 | Direct-current isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203162500U CN201611624U (en) | 2009-11-30 | 2009-11-30 | Direct-current isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201611624U true CN201611624U (en) | 2010-10-20 |
Family
ID=42962259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203162500U Expired - Lifetime CN201611624U (en) | 2009-11-30 | 2009-11-30 | Direct-current isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201611624U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102856112A (en) * | 2012-09-14 | 2013-01-02 | 如皋英瑞高压电器有限公司 | 10kV outdoor isolating switch structure |
| CN109360752A (en) * | 2018-12-11 | 2019-02-19 | 中欧电气有限公司 | A kind of multifunctional visible disconnecting switch |
-
2009
- 2009-11-30 CN CN2009203162500U patent/CN201611624U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102856112A (en) * | 2012-09-14 | 2013-01-02 | 如皋英瑞高压电器有限公司 | 10kV outdoor isolating switch structure |
| CN109360752A (en) * | 2018-12-11 | 2019-02-19 | 中欧电气有限公司 | A kind of multifunctional visible disconnecting switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101020 |
|
| CX01 | Expiry of patent term |