CN201340790Y - Annular movable contact no-excitation tap-changer - Google Patents
Annular movable contact no-excitation tap-changer Download PDFInfo
- Publication number
- CN201340790Y CN201340790Y CNU2008201910377U CN200820191037U CN201340790Y CN 201340790 Y CN201340790 Y CN 201340790Y CN U2008201910377 U CNU2008201910377 U CN U2008201910377U CN 200820191037 U CN200820191037 U CN 200820191037U CN 201340790 Y CN201340790 Y CN 201340790Y
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- contact
- switch
- annular
- annular dynamic
- movable contact
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Abstract
The utility model relates to an annular movable contact no-excitation tap-changer, which comprises switch supports arranged up and down; a main shaft is mounted between the two switch supports in a penetrating way; the main shaft is provided with a strut piece; cylindrical fixed contacts are arranged along the circumference of the two switch supports in a spacing way; the annular movable contact is connected between two neighboring cylindrical fixed contacts in a spanning way; the annular movable contact is sheathed on the strut piece and is matched with a radial sliding pin and a spring arranged on the strut piece. The annular movable contact no-excitation tap-changer is characterized in that the upper annular movable contact and the lower movable contact are arranged corresponding to each radial sliding pin; the ends of the radial sliding pins are fixedly provided with rollers to be corresponding to the inner hole of the upper annular movable contact and the lower movable contact. The annular movable contact no-excitation tap-changer raises the contact surface between the movable contacts and the fixed contacts, improves the contact property of the contacts, reduces the axial length of the switch or can be provided with a plurality of movable contact rings on the same axial length to lead the switch to have larger current-carrying capacity; the annular movable contact no-excitation tap-changer has the advantages of compact and reasonable structure arrangement, small axial dimension of the switch, strong rigidity of the main shaft, and high reliability.
Description
Technical field
The utility model relates to a kind of transformer off circuit tap changer.
Background technology
Existing off circuit tap changer contact comprises decides contact and cross-over connection in the two adjacent moving contacts of deciding between contact, decides that contact adopts the cylindric contact of deciding, the more employing annular dynamic contact of moving contact, annular dynamic contact under the spring force effect with decide contact and reliably contact.Annular dynamic contact is under the moment loading of main shaft and supporter during the conversion gear, and the pressure that overcomes spring is decided contact surface along column and moved to the opposite side of deciding contact from a side, finishes shift process.This annular dynamic contact is sleeved on the supporter that links with main shaft, and with the radially sliding pin and the spring phase configuration that are installed on the supporter.Shunting switch current capacity size is main and it is big or small relevant to move, decide the contact contact-making surface, because the existence of processing and alignment error, the axial length of annular dynamic contact does not become positive correlation with contact-making surface size moving, that decide contact, and often with moving contact to install quantity relevant.Therefore the shunting switch of above-mentioned structure of contact terminal is when current-carrying is big, and is moving for increasing, decide the contact-making surface between contact, needs lengthening to decide contact and more annular dynamic contact is set.And by above-mentioned existing structure of contact terminal, more the setting of multiple moving contacts not only can increase the axial dimension of shunting switch, and can strengthen the structure difficulty of switch, and switch spindle rigidity is reduced, and influences its reliability service.When switch is that two-phase or the above-mentioned situation of three phase times are especially outstanding.
Summary of the invention
Technical problem to be solved in the utility model is to provide the non-exciting shunting switch with annular dynamic contact that a kind of contact performance is good, current-carrying is big, axial dimension is little, reliability is high at the deficiency of above-mentioned prior art existence.
The utility model is that the technical scheme that problem adopted of the above-mentioned proposition of solution is: the switch bearing 1 that comprises upper and lower settings, be coated with main shaft 2 between two switch bearings, be installed on supporter 12 on the main shaft, between two switch bearings, decide contact 4 along circumferentially being arranged at intervals with column, two adjacent columns are decided the contact span and are connected to annular dynamic contact 5, annular dynamic contact be sleeved on the supporter and with the radially sliding pin 8 and spring 10 phase configuration that are installed on the supporter, it is characterized in that corresponding to every radially sliding pin 8 dispose, following two annular dynamic contacts 5, the termination of sliding pin radially be installed on roller and described on, the endoporus phase configuration of following two annular dynamic contacts.
Press such scheme, described upper and lower two annular dynamic contact endoporus are provided with annular groove respectively, described roller comprises and is installed in the radially bearing pin 7 of sliding pin termination, the two ends of bearing pin dispose upper and lower bearing 6, upper and lower bearing respectively with the annular groove phase configuration of upper and lower two annular dynamic contacts.
Press such scheme, described upper and lower two annular dynamic contact endoporus are provided with annular bead respectively, described roller comprises and is installed in the radially bearing pin 7 of sliding pin termination, the two ends of bearing pin dispose upper and lower concave surface bearing, upper and lower concave surface bearing respectively with the annular bead phase configuration of upper and lower two annular dynamic contacts.
Press such scheme, the outer periphery of shunting switch is equipped with insulator 11, the cage type insulator that insulator can be insulating cylinder or is made of many insulating bars, corresponding formation cydariform (tubular) shunting switch or cage type tapping switch.
Press such scheme, column is decided contact 4 can directly be threaded onto up and down 1 of switch bearing, constitutes single-phase shunting switch; Column decide contact 4 can install in week of insulator 11 to the inside, a row or multi-row column can be set vertically decide contact 4, and correspondence is provided with annular dynamic contact 5, constitute single-phase or heterogeneous shunting switch.
The beneficial effects of the utility model are: 1, radially dispose upper and lower two annular dynamic contacts on the sliding pin at one, this will improve contact-making surface moving, that decide contact, improve the contact performance of contact, not only strengthened the switch contact reliability of operation, and reduced the axial length of switch or on same axial length, more movable contact rings can be set, make switch possess bigger ampacity; 2, structure is provided with compact and reasonable, and the switch axial dimension is little, and main axis stiffness is strong, the reliability height.
Description of drawings
Fig. 1 is the main cutaway view of an embodiment of the present utility model.
Fig. 2 is the partial enlarged drawing of moving contact part among Fig. 1.
Fig. 3 cuts open figure for the B-B of Fig. 1.
Fig. 4 is the main cutaway view of another embodiment of the present utility model.
Fig. 5 is the C-C cutaway view of Fig. 4.
Embodiment
Further specify embodiment of the present utility model below in conjunction with accompanying drawing.
An embodiment of the present utility model such as Fig. 1,2, shown in 3, be single-phase five grades of no excitation drum-shaped shunting switch, the switch bearing 1 that comprises upper and lower settings, be coated with main shaft 2 between two switch bearings, the upper end of main shaft and switch operating mechanism 3 link, be installed on eccentric supporter 12 on the main shaft, between two switch bearings, decide contact 4 along circumferentially being arranged at intervals with column, column is decided contact and is installed on 6, the upper end that column is decided contact is connected with lead-in wire 9 or binding post, two adjacent columns are decided the contact span and are connected to annular dynamic contact 5, described annular dynamic contact be sleeved on the supporter and with the radially sliding pin 8 and spring 10 phase configuration that are installed on the supporter, radially sliding pin 8 is loaded on the endoporus of supporter, outer casing spring 10, can radially stretch, corresponding to every radially sliding pin 8 dispose, following two annular dynamic contacts 5, on described, following two annular dynamic contact endoporus are provided with annular groove respectively, be installed on roller in the termination of sliding pin radially, described roller comprises and is installed in the radially bearing pin 7 of sliding pin termination, the two ends of bearing pin dispose, lower bearing 6, on, lower bearing is respectively with last, the annular groove phase configuration of following two annular dynamic contacts, forming rolling with annular dynamic contact contacts, make annular dynamic contact 5 mobile controlled at axial location, can not produce axial endplay.The moving contact of present embodiment disposes 3～5 side by side, lays vertically, and each moving contact comprises upper and lower two annular dynamic contacts.
Another embodiment of the present utility model is one or three to link five grades and do not have the excitation drum-shaped shunting switch shown in Fig. 4,5.Be that with last embodiment difference the shunting switch outer periphery is equipped with insulator 11, insulator is an insulating cylinder, column is decided contact 4 and directly is installed on the insulating cylinder, connect firmly and draw lead-in wire 9 mutually with the insulating cylinder barrel by trailing flank, column is decided contact and is installed 6 along weekly interval in the insulator, and lay three rows vertically at interval, constitute five grades of three-phases; Decide contact corresponding to column, moving contact on the main shaft 2 also is installed on three rows, every row's moving contact is decided contact mutually corresponding to one, every supporter 12 that is provided with mutually on the main shaft, every phase moving contact is made of 2～3 moving contacts arranged side by side, each moving contact comprises upper and lower two annular dynamic contacts, and three row's moving contacts are staggered up and down to be installed, and mutually insulated.Other structure is identical with a last embodiment.
The utility model relates generally to the compact rolling contact structure of shunting switch, can be used on the shunting switch contact of various connection principles, makes construction of switch simply compact, easy to operate, and current capacity enlarges, and contact stabilization is reliable.This switch can vertically be installed, and also can horizontally install.
Claims (9)
1, a kind of non-exciting shunting switch with annular dynamic contact, the switch bearing that comprises upper and lower settings, be coated with main shaft between two switch bearings, be installed on supporter on the main shaft, between two switch bearings, decide contact along circumferentially being arranged at intervals with column, two adjacent columns are decided the contact span and are connected to annular dynamic contact, annular dynamic contact be sleeved on the supporter and with the radially sliding pin and the spring phase configuration that are installed on the supporter, on it is characterized in that corresponding to every radially sliding pin disposes, following two annular dynamic contacts, the termination of sliding pin radially be installed on roller and described on, the endoporus phase configuration of following two annular dynamic contacts.
2, by the described non-exciting shunting switch with annular dynamic contact of claim 1, it is characterized in that described upper and lower two annular dynamic contact endoporus are provided with annular groove respectively, described roller comprises and is installed in the radially bearing pin of sliding pin termination, the two ends of bearing pin dispose upper and lower bearing, upper and lower bearing respectively with the annular groove phase configuration of upper and lower two annular dynamic contacts.
3, by the described non-exciting shunting switch with annular dynamic contact of claim 1, it is characterized in that described upper and lower two annular dynamic contact endoporus are provided with annular bead respectively, described roller comprises and is installed in the radially bearing pin of sliding pin termination, the two ends of bearing pin dispose upper and lower concave surface bearing, upper and lower concave surface bearing respectively with the annular bead phase configuration of upper and lower two annular dynamic contacts.
4, by claim 1 or 2 described non-exciting shunting switch with annular dynamic contact, the outer periphery that it is characterized in that shunting switch is equipped with insulator, the cage type insulator that insulator can be insulating cylinder or is made of many insulating bars, corresponding formation drum-shaped shunting switch or cage type tapping switch.
5, by claim 1 or 2 described non-exciting shunting switch with annular dynamic contact, it is characterized in that column decide contact directly be threaded onto about between the switch bearing, constitute single-phase shunting switch.
6, by the described non-exciting shunting switch with annular dynamic contact of claim 4, it is characterized in that column decide contact install in week of insulator to the inside, a row or multi-row column is set vertically decides contact, and correspondence is provided with annular dynamic contact, constitute single-phase or heterogeneous shunting switch.
7, by claim 2 or 3 described non-exciting shunting switch with annular dynamic contact, it is characterized in that described radially sliding pin is loaded on the endoporus of supporter, outer casing spring can radially stretch.
8, by the described non-exciting shunting switch with annular dynamic contact of claim 4, the upper end and the switch operating mechanism that it is characterized in that main shaft link, be installed on eccentric supporter on the main shaft, decide contact along circumferentially being arranged at intervals with column between two switch bearings, column is decided contact and is installed on 6.
9, by the described non-exciting shunting switch with annular dynamic contact of claim 4, it is characterized in that column decides contact and directly be installed on the insulating cylinder, connect firmly mutually with the insulating cylinder barrel and print off lead-in wire by trailing flank, column is decided contact and is installed 6 along weekly interval in the insulator, and lay three rows vertically at interval, constitute five grades of three-phases; Decide contact corresponding to column, moving contact on the main shaft also is installed on three rows, every row's moving contact is decided contact mutually corresponding to one, every supporter that is provided with mutually on the main shaft, every phase moving contact is made of 2～3 moving contacts arranged side by side, each moving contact comprises upper and lower two annular dynamic contacts, and three row's moving contacts are staggered up and down to be installed, and mutually insulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201910377U CN201340790Y (en) | 2008-09-25 | 2008-09-25 | Annular movable contact no-excitation tap-changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201910377U CN201340790Y (en) | 2008-09-25 | 2008-09-25 | Annular movable contact no-excitation tap-changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201340790Y true CN201340790Y (en) | 2009-11-04 |
Family
ID=41236333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201910377U Expired - Lifetime CN201340790Y (en) | 2008-09-25 | 2008-09-25 | Annular movable contact no-excitation tap-changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201340790Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101477886B (en) * | 2008-09-25 | 2012-06-06 | 武汉泰普变压器开关有限公司 | Non-exciting shunting switch with annular dynamic contact |
| CN104201015A (en) * | 2014-08-30 | 2014-12-10 | 任宏宇 | Innovative contact switching mechanism of tapping switch |
-
2008
- 2008-09-25 CN CNU2008201910377U patent/CN201340790Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101477886B (en) * | 2008-09-25 | 2012-06-06 | 武汉泰普变压器开关有限公司 | Non-exciting shunting switch with annular dynamic contact |
| CN104201015A (en) * | 2014-08-30 | 2014-12-10 | 任宏宇 | Innovative contact switching mechanism of tapping switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20091104 Effective date of abandoning: 20080925 |