CN101477886B - Non-exciting shunting switch with annular dynamic contact - Google Patents
Non-exciting shunting switch with annular dynamic contact Download PDFInfo
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- CN101477886B CN101477886B CN2008101970813A CN200810197081A CN101477886B CN 101477886 B CN101477886 B CN 101477886B CN 2008101970813 A CN2008101970813 A CN 2008101970813A CN 200810197081 A CN200810197081 A CN 200810197081A CN 101477886 B CN101477886 B CN 101477886B
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Abstract
The invention relates to a non-excitation tapping switch used for a transformer, which comprises switch supports installed over and under the switch, and a main shaft installed between the two switch supports in a penetrating manner. Supporters are installed on the main shaft; columnar fixed contacts are installed on the circumference at intervals between the two switch supports; ring-shaped moving contacts are in bridge connection with two adjacent columnar fixed contacts; and the ring-shaped moving contacts are sleeved on the supporters and configured with radial sliding pins and a spring which are installed on the supporters. The non-excitation tapping switch is characterized in that one upper ring-shaped moving contact and one lower ring-shaped moving contact are configured on each sliding pin correspondingly; and rollers are arranged at tips of the radial sliding pins to be configured with the inner bores of the upper and the lower two ring-shaped moving contacts. The invention heightens the contact surfaces of the moving and the fixed contacts, improves the contact performance of the contacts, shortens the axial length of the switch or installs more moving contact rings along the identical axial length, and provides the switch with greater current-carrying capacity. Moreover, the switch has the advantages of tight and reasonable structure installment, small axial dimension of the switch, strong stiffness of the main shaft, and high reliability.
Description
Technical field
The present invention relates to a kind of transformer and use 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, accomplishes 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 phases or the above-mentioned situation of three phase times are especially outstanding.
Summary of the invention
Technical problem to be solved by this invention is to the deficiency of above-mentioned prior art existence 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 to be provided.
The present invention for the technical scheme that problem adopted of the above-mentioned proposition of solution is: comprise the switch bearing 1 that is provided with up and down; 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, two adjacent columns and decide the contact span and be connected to annular dynamic contact 5 along circumferentially being arranged at intervals with column, 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 upper and lower two annular dynamic contacts 5, be installed on the endoporus phase configuration of roller and said upper and lower two annular dynamic contacts in the termination of sliding pin radially.
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 up of many insulated bar, 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 many organ timberings shape can be set vertically decide contact 4, and correspondence is provided with annular dynamic contact 5, constitute single-phase or heterogeneous shunting switch.
Beneficial effect of the present invention is: 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, made 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, and reliability is high.
Description of drawings
Fig. 1 is the main cutaway view of one embodiment of the present of invention.
Fig. 2 is the partial enlarged drawing of moving contact part among Fig. 1.
Fig. 3 cuts open figure for B-B of Fig. 1.
Fig. 4 is the main cutaway view of an alternative embodiment of the invention.
Fig. 5 is C-C cutaway view of Fig. 4.
Embodiment
Further specify embodiments of the invention below in conjunction with accompanying drawing.
One embodiment of the present of invention are single-phase five grades of no excitation drum-shaped shunting switch like Fig. 1,2, shown in 3, comprise the switch bearing 1 that is provided with up and down; Be coated with main shaft 2 between two switch bearings, the upper end of main shaft and switch operating mechanism 3 link, and are 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, and 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, said 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 upper and lower two annular dynamic contacts 5; Described upper and lower 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 that 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; Form rolling with annular dynamic contact contacts, and makes 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.
Of the present invention another implemented like Fig. 5, shown in 6, is one or three to link five grades and do not have the excitation drum-shaped shunting switch.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, connects firmly and draw lead-in wire 9 mutually with the insulating cylinder barrel through trailing flank, and column is decided contact and 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, and 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 up 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 present invention relates generally to the compact rolling contact structure of shunting switch, can be used for making the construction of switch compact on the shunting switch contact of various connection principles, and is 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. non-exciting shunting switch with annular dynamic contact; Comprise the switch bearing that is provided with up and down; 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, it is characterized in that corresponding to every radially sliding pin dispose upper and lower two annular dynamic contacts, be installed on the endoporus phase configuration of roller and said upper and lower two annular dynamic contacts in the termination of sliding pin radially.
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 up of many insulated bar, 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; One row or many organ timberings shape are set vertically decide contact, and correspondence is provided with annular dynamic contact, constitutes 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, radially flexible.
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, between two switch bearings, decide contact along circumferentially being arranged at intervals with column, column is decided contact and is installed on six.
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 through trailing flank; Column is decided contact and is installed six along weekly interval in the insulator, and lays three rows at interval vertically, constitutes five grades of three-phases; Decide contact corresponding to column; Moving contact on the main shaft also is installed on three rows, and 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 up 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 |
|---|---|---|---|
| CN2008101970813A CN101477886B (en) | 2008-09-25 | 2008-09-25 | Non-exciting shunting switch with annular dynamic contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101970813A CN101477886B (en) | 2008-09-25 | 2008-09-25 | Non-exciting shunting switch with annular dynamic contact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101477886A CN101477886A (en) | 2009-07-08 |
| CN101477886B true CN101477886B (en) | 2012-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101970813A Active CN101477886B (en) | 2008-09-25 | 2008-09-25 | Non-exciting shunting switch with annular dynamic contact |
Country Status (1)
| Country | Link |
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| CN (1) | CN101477886B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102693820A (en) * | 2012-06-06 | 2012-09-26 | 武汉泰普变压器开关有限公司 | Off-circuit tap-changer |
| CN104752076A (en) * | 2015-04-21 | 2015-07-01 | 武汉长虹恒通高压设备有限公司 | Single-phase rolling-ring type contact off-circuit tap changer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200944364Y (en) * | 2006-09-12 | 2007-09-05 | 武汉泰普变压器开关有限公司 | Off-circuit cage tap-changer for transformer |
| CN201340790Y (en) * | 2008-09-25 | 2009-11-04 | 武汉泰普变压器开关有限公司 | Annular movable contact no-excitation tap-changer |
-
2008
- 2008-09-25 CN CN2008101970813A patent/CN101477886B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200944364Y (en) * | 2006-09-12 | 2007-09-05 | 武汉泰普变压器开关有限公司 | Off-circuit cage tap-changer for transformer |
| CN201340790Y (en) * | 2008-09-25 | 2009-11-04 | 武汉泰普变压器开关有限公司 | Annular movable contact no-excitation tap-changer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101477886A (en) | 2009-07-08 |
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