CN102184793B - Isolating switch - Google Patents
Isolating switch Download PDFInfo
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- CN102184793B CN102184793B CN201110096447.XA CN201110096447A CN102184793B CN 102184793 B CN102184793 B CN 102184793B CN 201110096447 A CN201110096447 A CN 201110096447A CN 102184793 B CN102184793 B CN 102184793B
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- Prior art keywords
- contact
- moving contact
- arm
- isolating switch
- closing position
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- 230000003068 static effect Effects 0.000 abstract description 7
- 238000002955 isolation Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Abstract
The invention discloses a three-station isolating switch of a small self-operated type contact structure, comprising a wire inlet support, a wire outlet support, an electric connector, a first static contact, a conducting arm, a traction sleeve, a traction arm and a second static contact, wherein the electric connector is connected with the wire inlet support; the first static contact is connected with the wire outlet support; one end of the conducting arm is connected with the electric connector, and the other end of the conducting arm is connected with a moving contact; the traction sleeve is sheathed outside the conducting arm and the moving contact so as to lead the conducting arm and the moving contact to be capable of sliding in the traction sleeve; the traction arm drags the traction sleeve and rotates around the main shaft; the second static contact is positioned at a grounding position; the isolating switch has three stations, namely a closing position, a tripping position and the grounding position; and at the closing position, the moving contact and the first static contact are contacted; at the grounding position, the moving contact and the second static contact are contacted, while the tripping position is arranged between the closing position and the grounding position.
Description
Technical field
The present invention relates to a kind of power switch field, relate to particularly a kind of isolating switch, relate in particular to a kind of isolating switch for high-tension switch cabinet.
Background technology
High voltage isolator is a kind of common and indispensable, linkage element with " suspension bridge function " in electric power network, and, with arriving its connection and separating effect soon, it has the effect of forming a connecting link in whole circuit.Fig. 1 shows a kind of high voltage isolator often using in the prior art, and as shown in Figure 1, high voltage isolator 100 generally includes end of incoming cables 110, leading-out terminal 120, isolation knife 130, end of incoming cables pole 140 and leading-out terminal pole 150.Utilize the rotation of isolation knife 130, isolating switch 100 conductings, to be transferred to leading-out terminal 120 by electric current by end of incoming cables 110.Generally speaking, end of incoming cables 110, leading-out terminal 120 and isolation knife 130 are made by the good copper material of electric conductivity.
Good with contacting of isolation knife 130 in order to ensure end of incoming cables 110, traditional method is that isolation knife 130 adopts bracket formula double-pole structure.Fig. 2 shows the schematic diagram of the bracket formula double-pole structure adopting in conventional high-tension isolating switch, and wherein Fig. 2 left side shows the front view of this structure, and right side shows the end view of this structure.As shown in Figure 2, in order to ensure in rated current the huge electric power when breaking down with electrical network impact and can not make switch break down, need to when assembling isolation knife apart from end of incoming cables 110 external pressurized springs 160 the most nearby, borrow its elastic force that end of incoming cables 110 and isolation knife 130 are compressed.In like manner, in isolation knife 130 and leading-out terminal 120 electrical connections place, also adopt similar approach to guarantee that isolation knife 130 is with respect to the flexible rotating of leading-out terminal 120, and take into account the thrust when connecting between the two.
In the manufacture process of traditional isolating switch especially assembling process, how to guarantee that " contact pressure " is a very important index, and often need manually to be adjusted.Therefore, when user installation is used isolating switch, reset condition when isolating switch dispatches from the factory need to change conventionally, if and if user be installed there is no professional experiences, just cause isolating switch not reach normal design parameter when operation, cause fault.
In addition, as shown in Figure 2, in traditional isolating switch, the contact arm of isolation knife be take main shaft and as the center of circle, is moved in a circle to reach and close minute, in order to guarantee enough electrical distances, contact arm length is a definite value, make so the initial distance of whole isolating switch very large, thereby it is larger that whole switch is taken up room in isolation place.And structure can only realize two stations of divide-shut brake position.
Therefore, desired being to provide is a kind ofly convenient to reliably to install and makes that switch occupies less space and can reach the novel tri-station isolating switch of ground state can realize maintenance time.
Summary of the invention
The present invention aims to provide a kind of isolating switch that can address the above problem.
According to an aspect of the present invention, provide a kind of isolating switch, having comprised: inlet wire bearing and outlet bearing; The electrical connector being connected with described inlet wire bearing; The first fixed contact being connected with described outlet bearing; Conductive arm, one end is connected with described electrical connector, and the other end is connected with moving contact; Traction casing, is enclosed within described conductive arm and moving contact outside, so that described conductive arm and moving contact can slide in described traction casing; Draft arm, draws to be rotated around main shaft described traction casing; And the second fixed contact in earthing position, wherein said isolating switch has closing position, open position and earthing position, at described closing position place, described moving contact and described the first fixed contact contact, at earthing position place, described moving contact and described the second fixed contact contact, and described open position is between described closing position and described earthing position.
Alternatively, in isolating switch according to the present invention, at closing position place, point-blank, earthing position and closing position have 90 ° of angles for inlet wire bearing, conductive arm and outlet bearing, and earthing position and closing position have 45 ° of angles.
Alternatively, in isolating switch according to the present invention, moving contact has self-reliance concave spherical surface structure, and the first and second fixed contacts have protruding spherical structure.
Alternatively, in isolating switch according to the present invention, draft arm is included in the first that one end is connected with main shaft and the second portion being connected with traction casing at the other end, described second portion has two legs to form the inside groove of described draft arm between described two legs, wherein when described draft arm draws the rotation of described conductive arm and moving contact, described conductive arm and moving contact slide to slip in the inside groove of described draft arm or therefrom skid off in described traction casing.
Accompanying drawing explanation
Referring now to accompanying drawing, the present invention is described in more detail, wherein:
Fig. 1 shows a kind of high voltage isolator often using in the prior art;
Fig. 2 shows the installation diagram of the bracket formula double-pole structure adopting in conventional high-tension isolating switch;
Fig. 3-5 show respectively the state diagram when combined floodgate, separating brake and the earthing position according to the isolating switch of one embodiment of the present invention;
Fig. 6-8 show respectively according to the schematic diagram of the fixed contact using in the isolating switch of one embodiment of the present invention, moving contact, traction casing; And
Fig. 9 and Figure 10 show respectively according to the front view of the draft arm using in the isolating switch of one embodiment of the present invention and vertical view.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are described.
Fig. 3 shows according to the schematic diagram of the isolating switch 300 of one embodiment of the present invention, and in Fig. 3, isolating switch is in closing position.Isolating switch 300 comprises inlet wire bearing 310, moving contact 320, the first fixed contact 330 and the second fixed contact 335, conductive arm 340, electrical connector 350, traction casing 360, draft arm 370, outlet bearing 380 and main shaft 390.As shown in Figure 3, inlet wire bearing 310 is connected with the circuit of isolating switch 300 switch of wanting respectively with outlet bearing 380.Conductive arm 340 one end are connected with inlet wire bearing 310 by electrical connector 350, and the other end of conductive arm 340 cover is connected with moving contact 320 thereon.At outlet bearing 380 places, there is the first fixed contact 330.When closing position place in shown in Fig. 3, moving contact 320 inserts the first fixed contacts 330, thus conducting isolating switch 300.At moving contact 320 and conductive arm 340 overcoats, there is traction casing 360, so that moving contact 320 and conductive arm 340 can be in the interior slips of draft arm 370.Traction casing 360 is drawn by draft arm 370, to be rotated around main shaft 390.
Fig. 4 show in open position, according to the schematic diagram of the isolating switch 300 of one embodiment of the present invention.As shown in Figure 4, when isolating switch is during in open position, draft arm 370 has rotated 45° angle degree (with respect to closing position, can certainly be other angles) around main shaft 390.In this process, draft arm 370 can draw traction casing 360 when rotated, thereby conductive arm 340 and moving contact 320 are also slided in the inside groove of draft arm 370 in traction casing 360, and is rotated around electrical connector 350.
Fig. 5 show in earthing position, according to the schematic diagram of the isolating switch 300 of one embodiment of the present invention.As shown in Figure 5, when isolating switch is during in earthing position, draft arm 370 continues to have rotated miter angle degree (with respect to earthing position, can certainly be other angles) around main shaft 390.In this process, draft arm 370 can draw traction casing 360 when rotated, thus make conductive arm and moving contact also in the interior slip of traction casing 360 to skid off from the inside groove of draft arm 370, and be rotated around electrical connector 350.At earthing position place, moving contact 320 inserts second fixed contact 335 at earthing position place, thereby moving contact 320 is fixed on to the second fixed contact 335 places, to realize the reliable operation of isolating switch 300.
Although in the execution mode shown in Fig. 3-5, show in isolating switch 300, closing position is mutually vertical with earthing position, and the middle of open position in closing position and earthing position.Yet in practice, these positions can be not limited to this, closing position can be mutually not vertical with earthing position, and open position is between closing position and earthing position.So these are all within protection scope of the present invention.
According to an embodiment of the invention, disadvantage contact in order to overcome conductive part site that traditional dynamic and static contact forms because of machining and assembly technology difference under external force, provides the designs of a kind of new fixed contact and moving contact.Fig. 6 and 7 shows respectively according to the schematic diagram of the fixed contact using in the isolating switch of one embodiment of the present invention and moving contact.As shown in Figures 6 and 7, fixed contact has protruding spherical structure, and moving contact has concave spherical surface structure, the two can, with the contact of " line contact " form, guarantee arbitrarily angled incision when contact, and stressed in " dead point " position fitting like a glove, this can increase substantially switch reliability.Generally speaking, fixed contact and moving contact have same material, to guarantee the two guiding in when contact and to coincide.According to practice effect, utilize the design of this fixed contact and moving contact, the performance index of grounded circuit in whole switch and major loop can be brought up to same level (and the index of traditional grounded circuit can only reach major loop half).Alternatively, as designs as shown in Fig. 3-5, can adopt the fixed contact as shown in Fig. 6 according to the first fixed contact 330 of the isolating switch of one embodiment of the present invention and the second fixed contact 335, and moving contact 320 can adopt the design of the moving contact shown in Fig. 7.
Fig. 9 and Figure 10 show respectively according to the front view of the draft arm using in the isolating switch of one embodiment of the present invention and vertical view.As shown in the figure, draft arm is included in the first 810 that one end is connected with main shaft 390 and the second portion 820 being connected with traction casing 360 at the other end, and second portion 820 has two legs to be connected with the shell of traction casing 360 respectively.And part between two legs has formed the inside groove of draft arm, thereby so that at draft arm 370 when to traction casing 360 traction conductive arms and moving contact rotation, conductive arm and moving contact in the interior slip of traction casing 360 to slip in the inside groove of draft arm 370 or therefrom skid off.
Utilization is according to design of the present invention, the moving contact of inner sliding type and traction casing be take main shaft and are stretched and rotate as the inside groove of basic point at draft arm under the drive of draft arm, this makes draft arm can realize with a little angle and displacement to close-minute-function of ground connection three-station, the function that needs wide-angle, long contact arm transmission mechanism to complete traditional isolating switch realizes in less space.
According to isolating switch of the present invention, greatly improved switches conductive reliability, according to test, country's High-Voltage Electrical Appliances quality supervision and test center is used BE256 digital test system to carry out electric property check to the three station high voltage isolators of the present embodiment, after under switch fault state, operator and ground cutter have all born the dynamic and thermal stability electric current of 31.5kA/80kA (peak value)/4S, switch is flexible, harmless.In addition isolating switch according to the present invention has effectively reduced switch overall dimension, has expanded the suitability of this product.
It should be noted above-described embodiment the present invention will be described rather than limit the invention, and those skilled in the art can design alternative embodiment in the situation that do not depart from the scope of claims.In the claims, any reference symbol between bracket should be configured to limitations on claims.Word " comprises " not to be got rid of existence and is not listed as element or step in the claims.Being positioned at word " " before element or " one " does not get rid of and has a plurality of such elements.The present invention can be by means of including the hardware of some different elements and realizing by means of the computer of suitably programming.In having enumerated the unit claim of some devices, several in these devices can be to carry out imbody by same hardware branch.The use of word first, second and C grade does not represent any order.Can be title by these word explanations.
Claims (3)
1. an isolating switch, is characterized in that, comprising:
Inlet wire bearing (310) and outlet bearing (380);
The electrical connector (350) being connected with described inlet wire bearing (310);
The first fixed contact (330) being connected with described outlet bearing (380);
Conductive arm (340), one end is connected with described electrical connector (350), and the other end is connected with moving contact (320);
Traction casing (360), in described conductive arm (340) and moving contact (320) outside, so that described conductive arm (340) and moving contact (320) can slide in described traction casing (360);
Draft arm (370), draws to be rotated around main shaft (390) described traction casing (360);
Described draft arm (370) is included in the first (810) that one end is connected with main shaft (390) and the second portion (820) being connected with traction casing (360) at the other end, described second portion (820) has two legs to form the inside groove of described draft arm (370) between described two legs, wherein when described draft arm (370) draws described conductive arm (340) and moving contact (320) rotation, described conductive arm (340) and moving contact (320) slide to slip in the inside groove of described draft arm (370) or therefrom skid off in described traction casing (360), and
The second fixed contact (335) in earthing position,
Wherein said isolating switch has three stations of closing position, open position and earthing position, at described closing position place, described moving contact (320) and described the first fixed contact (330) contact, at earthing position place, described moving contact (320) and described the second fixed contact (335) contact, and described open position is between described closing position and described earthing position.
2. isolating switch as claimed in claim 1, it is characterized in that, at described closing position place, point-blank, described earthing position and described closing position have 90 ° of angles for described inlet wire bearing (310), conductive arm (340) and outlet bearing (380).
3. the isolating switch as described in any in claim 1-2, is characterized in that, described moving contact (320) has concave spherical surface self-reliance structure, and described the first and second fixed contacts (335) have protruding spherical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110096447.XA CN102184793B (en) | 2011-04-21 | 2011-04-21 | Isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110096447.XA CN102184793B (en) | 2011-04-21 | 2011-04-21 | Isolating switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102184793A CN102184793A (en) | 2011-09-14 |
| CN102184793B true CN102184793B (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110096447.XA Active CN102184793B (en) | 2011-04-21 | 2011-04-21 | Isolating switch |
Country Status (1)
| Country | Link |
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| CN (1) | CN102184793B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109712841B (en) * | 2018-09-05 | 2020-06-16 | 国网福建电力有限公司 | Rectilinear isolator combined floodgate auxiliary device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1805093A (en) * | 2004-12-14 | 2006-07-19 | 弗里茨德雷希尔&佐讷电器工程装置有限公司 | Disconnecting switch with lineraly moving contact |
| CN101055813A (en) * | 2006-04-12 | 2007-10-17 | 阿雷瓦能源技术有限责任公司 | Three-position switch especially used for meddle voltage or high voltage switch device |
| JP4591871B2 (en) * | 2005-12-19 | 2010-12-01 | 株式会社高岳製作所 | High pressure switch |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08249987A (en) * | 1995-03-09 | 1996-09-27 | Nissin Electric Co Ltd | Three position switch |
| JP3104848B2 (en) * | 1996-01-24 | 2000-10-30 | 株式会社戸上電機製作所 | Switch with built-in capacitor for zero-phase voltage detection |
-
2011
- 2011-04-21 CN CN201110096447.XA patent/CN102184793B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1805093A (en) * | 2004-12-14 | 2006-07-19 | 弗里茨德雷希尔&佐讷电器工程装置有限公司 | Disconnecting switch with lineraly moving contact |
| JP4591871B2 (en) * | 2005-12-19 | 2010-12-01 | 株式会社高岳製作所 | High pressure switch |
| CN101055813A (en) * | 2006-04-12 | 2007-10-17 | 阿雷瓦能源技术有限责任公司 | Three-position switch especially used for meddle voltage or high voltage switch device |
Non-Patent Citations (2)
| Title |
|---|
| JP特开平8-249987A 1996.09.27 |
| JP特许第4591871号B2 2010.12.01 |
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| CN102184793A (en) | 2011-09-14 |
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Owner name: HU YANG Free format text: FORMER OWNER: XI'AN XINRUI POWER EQUIPMENT CO., LTD. Effective date: 20140605 |
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Free format text: CORRECT: ADDRESS; FROM: 710075 XI'AN, SHAANXI PROVINCE TO: 710065 XI'AN, SHAANXI PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140605 Address after: Hu Jia group Gaoling County Luyuan Town Village 710065 Shaanxi city of Xi'an Province, the house of Lords Patentee after: Hu Yang Address before: 0910, room 710075, building B, pioneer Plaza, 48 hi tech Zone, hi tech Zone, Shaanxi, Xi'an Patentee before: Xi'an Xinrui Power Equipment Co., Ltd. |
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Effective date of registration: 20190102 Address after: Room 102B South of Block C, Building 96 Xiangxing Road, Xiangxing Industrial Zone, Xiamen City, Fujian Province Patentee after: Fisette (Xiamen) Switch Co., Ltd. Address before: 710065 Hujia Formation, Yuanyuan Village, Luyuan Town, Gaoling County, Xi'an City, Shaanxi Province Patentee before: Hu Yang Effective date of registration: 20190102 Address after: Room 102B South of Block C, Building 96 Xiangxing Road, Xiangxing Industrial Zone, Xiamen City, Fujian Province Patentee after: Fisette (Xiamen) Switch Co., Ltd. Address before: 710065 Hujia Formation, Yuanyuan Village, Luyuan Town, Gaoling County, Xi'an City, Shaanxi Province Patentee before: Hu Yang |
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| TR01 | Transfer of patent right |
Effective date of registration: 20200519 Address after: Room 102B South of Block C, Building 96 Xiangxing Road, Xiangxing Industrial Zone, Xiamen City, Fujian Province Co-patentee after: Shanghai Huanyang Electric Co., Ltd Patentee after: FEISAITE (XIAMEN) SWITCH Co.,Ltd. Address before: Room 102B South of Block C, Building 96 Xiangxing Road, Xiangxing Industrial Zone, Xiamen City, Fujian Province Patentee before: FEISAITE (XIAMEN) SWITCH Co.,Ltd. |
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| TR01 | Transfer of patent right |