CN213959975U - Five-pin polarity switch special for voltage regulating switch of transformer - Google Patents
Five-pin polarity switch special for voltage regulating switch of transformer Download PDFInfo
- Publication number
- CN213959975U CN213959975U CN202022446540.6U CN202022446540U CN213959975U CN 213959975 U CN213959975 U CN 213959975U CN 202022446540 U CN202022446540 U CN 202022446540U CN 213959975 U CN213959975 U CN 213959975U
- Authority
- CN
- China
- Prior art keywords
- voltage regulating
- transformer
- switch
- connecting pin
- connection
- 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.)
- Active
Links
Images
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model belongs to the technical field of transformer distribution and transformation technique and specifically relates to a five-pin polarity switch of transformer regulating switch is exclusively used in. The pentagonal polarity transfer switch for the voltage regulating switch of the transformer comprises five connecting pins, two linkage pieces, a connecting pin mounting seat and a linkage piece driving device; five connection feet are equidistantly distributed on the connection foot mounting seat along a straight line, and two circular linkage pieces are arranged on the linkage piece driving device and distributed along the straight line direction of the five connection feet. The linkage piece slides along the linear direction, so that two connection relations can be formed between the linkage piece and the five connection pins, and the polarity switching of the voltage regulating branch in the voltage regulating switch circuit of the transformer is realized. Compare conventional polarity switch, adopt among the voltage regulating circuit the utility model discloses reducible pressure regulating branch road quantity simplifies the structure, reduces transformer voltage regulating switch cost to improve integrated level and reliability.
Description
Technical Field
The utility model belongs to the technical field of transformer distribution and transformation technique and specifically relates to a five-pin polarity switch of transformer regulating switch is exclusively used in.
Background
The voltage regulating circuit usually adopts a polarity conversion switch to form a positive and negative rotation control circuit. For example, the invention discloses an on-load voltage regulating circuit of an interleaved parallel nine-gear transformer with polarity conversion, which is disclosed in the Chinese patent application No. CN201910634391.5 and comprises a main winding, a voltage regulating winding, a rated voltage branch, a transition switching unit and five voltage regulating branches. A polarity change-over switch is arranged between the main winding and the voltage regulating winding, and positive and negative voltage regulation is realized by adjusting the connection end of an independent contact of the polarity change-over switch. The polarity change-over switch comprises a common contact and two independent contacts, the output end tap of the main winding is connected with the common contact of the polarity change-over switch, and the two independent contacts of the polarity change-over switch are respectively connected with the two end taps of the voltage regulating winding. When the polarity conversion switch is in an upper end connection state, the polarity of a voltage regulating winding of the access circuit is the same as that of the main winding, and the circuit can perform positive voltage regulation; when the polarity conversion switch is in a lower end connection state, the polarity of the voltage regulating winding of the access circuit is opposite to that of the main winding, and the circuit can perform reverse voltage regulation. However, the polarity change-over switch only has one common contact and two independent contacts, and 5 voltage regulating branches are needed for regulation in the nine-gear voltage regulating circuit; for example, the Chinese patent publication is: in CN110212830A, "an on-load voltage regulating circuit of a five-level transformer with polarity conversion", 3 voltage regulating branches are required in the five-level voltage regulating circuit for regulation.
Disclosure of Invention
In order to overcome the not enough of prior art, the utility model provides a five-pin polarity change over switch for transformer voltage regulating circuit, this five-pin polarity change over switch are used for the voltage regulating branch quantity that can reduce equal gear transformer among the prior art in the transformer voltage regulating switch, simplify the structure, reduce the transformer cost.
In order to achieve the above object, the utility model adopts the following technical scheme: a five-pin polarity transfer switch for a voltage regulating switch of a transformer comprises five connecting pins, two linkage pieces, a connecting pin mounting seat and a linkage piece driving device; five connection feet are arranged on the connection foot mounting seat along a straight line at intervals and are respectively a first connection foot, a second connection foot, a third connection foot, a fourth connection foot and a fifth connection foot, two circular linkage pieces are arranged on the linkage piece driving device and are adjacently arranged along the straight line direction of the five connection feet, namely a left linkage piece and a right linkage piece, and the distance between the linkage pieces is twice the distance between the connection feet. The linkage sheet driving device comprises a limiting groove, a push rod, a U-shaped support and an electromagnetic driver. The linkage piece is arranged on the push rod through a limit groove with a built-in spring, the push rod is limited by a pair of U-shaped supports arranged on the bottom plate and can axially slide, and one end of the push rod is connected with the electromagnetic driver. The linkage pieces synchronously move to form two connection structures, namely a positive connection voltage regulating branch connection structure and a negative connection voltage regulating branch connection structure, and each linkage piece is respectively and simultaneously communicated with two corresponding connection pins. Because five connecting pins are linearly distributed, and two linkage pieces are arranged adjacent to and in parallel with the connecting pins, the electromagnetic driver can push the push rod to drive the linkage pieces to slide along the linear direction, and the switching of two connection relations of the linkage pieces and the five connecting pins can be realized.
Furthermore, the first connecting pin is connected with a tap of the lower side output end of the regulating winding in the transformer regulating circuit, the second connecting pin is connected with a tap of the regulating branch in the transformer regulating circuit, other regulating branches in the transformer regulating circuit are connected with taps of the respective corresponding branch output ends of the regulating winding in the transformer regulating circuit, the third connecting pin is connected with a tap of the upper side input end of the regulating winding in the transformer regulating circuit, the fourth connecting pin is connected with a tap of the output end of the main winding in the transformer regulating circuit, and the fifth connecting pin is connected with a tap of the lower side output end of the regulating winding in the transformer regulating circuit. The polarity reversing switch forms two connection relations along with the synchronous slippage of the two linkage pieces, the first connection relation is that the left linkage piece is simultaneously communicated with the first connecting pin and the second connecting pin, and the right linkage piece is simultaneously communicated with the third connecting pin and the fourth connecting pin; the second connection relationship is that the left linkage piece is connected with the second and the third connection pins at the same time, and the right linkage piece is connected with the fourth and the fifth connection pins at the same time.
Among the two connection relations, the first connection relation realizes a positive voltage boosting structure of the voltage regulating branch, the second connection relation realizes a negative voltage reducing structure of the voltage regulating branch, and the voltage regulating branch is maintained at a middle gear when rated voltage is supplied, so that the voltage regulating circuit is smoothly switched under the condition of no power interruption.
In the structure, the polarity reversing switch realizes two circuit connection structures through a double linkage structure, the two circuit connection structures correspond to the positive connection, the reverse connection and the non-connection of 4 voltage regulating branches, the switching of nine-gear voltage can be realized, and one voltage regulating branch is reduced compared with the prior art; the positive and negative access of corresponding 2 voltage regulating branches then can realize the switching of 5 grades of voltages, and 3 voltage regulating branches that compare prior art also can reduce a voltage regulating branch, can realize that voltage regulating circuit's overall structure simplifies, reduce cost.
Five-pin polarity switch not only make circuit structure simplify, structural also more than the scheme integrated level that uses a plurality of ordinary polarity switch, because two linkage piece synchronous motion, operation drive arrangement also only needs one set, the fault rate is lower.
Drawings
Fig. 1 is a schematic diagram of an embodiment of a five-level transformer voltage regulating switch using the five-pin polarity switch of the present invention.
Fig. 2 is a schematic diagram of the five-pin polarity switch of the present invention.
Fig. 3 a and b are schematic diagrams of a top view and a front view of a push rod in a five-pin polarity switch according to the present invention.
Fig. 4 a, b, c are respectively a front view, a left side view and a top view of the U-shaped bracket in the five-legged polarity switch of the present invention.
Fig. 5 is a circuit connection diagram of the embodiment shown in fig. 1.
Detailed Description
The following description will be made in conjunction with the accompanying drawings, taking as an embodiment the application of the five-pin polarity switch to a five-gear transformer voltage regulating switch.
Referring to fig. 1 to 4, a five-step transformer voltage regulating switch includes a housing (not shown), a bottom plate 100, a five-pin polarity switch Kj, a vacuum interrupter module, a protection resistor 33, and a switch operating mechanism 34. The vacuum arc extinguishing module comprises 4 vacuum arc extinguishing chambers K0, Ke, Km and K1 which are installed in parallel, and components for installing and fixing the vacuum arc extinguishing chambers. The function of the switch operating mechanism 34 is to operate and control each vacuum interrupter to achieve the desired on-off state combination, and the description of the specific structure is omitted here.
The five-pin polarity switch comprises five connecting pins 6, two linkage pieces 11 and 12, a connecting pin mounting seat 10 and a linkage piece driving device; the five connecting pins are distributed on the connecting pin mounting base 10 at intervals along a straight line, the two circular linkage pieces 13 are mounted on the linkage piece driving device, and the connecting line direction of the two circular linkage pieces is parallel to the straight line where the five connecting pins are located; the linkage sheet driving device comprises a limiting groove 14, a push rod 20, a pair of U-shaped supports 21 and an electromagnetic driver 24; the linkage piece 13 is arranged on a push rod 20 through a limiting groove 14 with a built-in spring, the push rod 20 is limited by a pair of U-shaped support limiting brackets 21 arranged on a bottom plate to move up and down, one end of the push rod is limited in a sliding groove of the limiting bracket 21 on the left side through a pin, and the other end of the push rod is connected with an electromagnetic driver 24 and can slide axially;
referring to fig. 5, a first connecting pin 1 is connected with a fifth connecting pin 5 and a tap X3 at the lower end of a voltage regulating coil L2 in a voltage regulating winding, a second connecting pin 2 is connected with a fixed end of a vacuum arc extinguish chamber Km, a third connecting pin 3 is connected with a tap X1 at the upper end of a voltage regulating coil L1 in the voltage regulating winding, a fourth connecting pin 4 is connected with a tap at the lower end of a main winding L and a fixed end of a vacuum arc extinguish chamber Ke, and a tap X2 connected with the middle of the voltage regulating coil L1 and L2 in the voltage regulating winding is connected with the fixed end of the vacuum arc extinguish chamber K1. And an upper end tap of the main winding L is connected with the input end A of the whole voltage regulating switch circuit. The protection resistor 33 (R in the circuit diagram) and the vacuum interrupter K0 are connected in parallel to form a transition switching unit, which plays a role of protecting the circuit during switching. In the transition switching unit, the movable end of the vacuum arc extinguish chamber K0 is connected with the movable ends of the vacuum arc extinguish chambers Km and Ke and the output end X0 of the whole voltage regulating switch circuit, and the fixed end of the vacuum arc extinguish chamber K0 is connected with the movable end of the vacuum arc extinguish chamber K1.
The combination state of the polarity switch Kj and each on-off switch corresponds to each gear of the voltage regulating circuit as follows:
the first linkage structure is that the linkage sheet 11 is simultaneously communicated with the connecting pin 1 and the connecting pin 2, the linkage sheet 12 is simultaneously communicated with the connecting pin 3 and the connecting pin 4, and the switch states of all gears are as follows
Third gear: ke is closed, K0 is opened, and both L1 and L2 are not connected into the circuit, so that power is supplied by rated voltage;
fourth gear: ke is open, K1 is closed, K0 is closed, and L1 is connected into the circuit;
fifth gear: ke is open, Km is closed, K0 is open, and L1 and L2 are connected into the circuit;
the second linkage structure is that linkage piece 11 puts through simultaneously and connects foot 2 and connection foot 3, and linkage piece 12 puts through simultaneously and connects foot 4 and connection foot 5, and each gear switch state is as follows:
third gear: ke is closed, K0 is opened, and both L1 and L2 are not connected into the circuit, so that power is supplied by rated voltage;
second gear: ke is opened, K1 is closed, K0 is closed, and L2 is reversely connected into the circuit;
first gear: ke is opened, Km is closed, K0 is opened, and L2 and L1 are reversely connected into the circuit;
the boosting principle is as follows:
when the gear is three, the linkage piece 11 of the polarity switch Kj is simultaneously communicated with the connecting pins 1 and 2, and the linkage piece 12 is simultaneously communicated with the connecting pins 3 and 4; at this time, the on-off switch Ke of the rated voltage branch is closed, the on-off switches of the voltage regulating branches are all opened, and the transition on-off switch K0 in the transition switching unit is also opened.
When the fourth gear is shifted up, in the first step, the on-off switch K1 in the closed voltage regulating branch is closed, the cut-off switch K0 of the transition switching unit is in an off state, at the moment, the rated voltage branch supplies power, and the transition resistor provides short-circuit protection; and then, the on-off switch Ke on the rated voltage branch is disconnected, the voltage regulating coil L1 is connected into the circuit, and in the third step, the on-off switch K0 in the transition switching unit is closed, so that the switching of the third gear and the fourth gear is completed.
When the fourth gear is shifted up to the fifth gear, the on-off switch K0 in the transition switching unit is switched off in the first step, then the on-off switch Km in the voltage regulating branch is switched on, at the moment, both K1 and Km are switched on, the voltage regulating coil L1 is connected into the circuit, and the on-off switch K1 in the voltage regulating branch is switched off, the voltage regulating coils L1 and L2 are connected into the circuit, so that the switching of the fourth gear and the fifth gear is completed.
The pressure reduction principle is as follows:
when the gear is in the third gear, the polarity switch Kj is switched, so that the linkage piece 11 is simultaneously connected with the connecting pins 2 and 3, and the linkage piece is simultaneously connected with the connecting pins 4 and 5; at this time, the on-off switch Ke of the rated voltage branch is closed, the on-off switches of the voltage regulating branches are all opened, the transition on-off switch K0 in the transition switching unit is also opened, and the rated voltage branch supplies power.
When the second gear is reduced, in the first step, the on-off switch K1 in the voltage-regulating branch is closed, the cut-off switch K0 of the transition switching unit is in an off state, at the moment, the on-off switches K1 and Ke are both closed, the transition resistor provides short-circuit protection, and the rated voltage branch supplies power; and then, the on-off switch Ke on the rated voltage branch is disconnected, the voltage regulating coil L2 is reversely connected into the circuit, and in the third step, the on-off switch K0 in the transition switching unit is closed, so that the switching of the third gear and the second gear is completed.
When the second gear is shifted down to the first gear, in the first step, the on-off switch K0 in the transition switching unit is switched off, then the on-off switch Km in the voltage regulating branch is switched on, at the moment, both Km and K1 are switched on, the voltage regulating coil L2 is reversely connected into the circuit, in the third step, the on-off switch K1 in the voltage regulating branch is switched off, and the voltage regulating coils L2 and L1 are reversely connected into the circuit, so that the second gear is shifted down to the first gear.
In the whole five-gear voltage regulation process, a rated voltage branch or a voltage regulation branch in the previous gear supplies power for a voltage regulation branch in the next gear, and the whole voltage regulation process is always in a power-on state. Five grades of voltage regulating circuits make it reduce 2 voltage regulating branch roads by 3 voltage regulating branch roads of prior art through polarity switch's double linkage structure, have reduced the joint quantity of coil, make its structure more simplified, more rationalize on the global design, moreover on the global space greatly reduced, cost greatly reduced, the also greatly reduced of technology degree of difficulty, change in processing and design, the reduction of circuit still helps promoting its security.
Claims (2)
1. A five-pin polarity transfer switch for a voltage regulating switch of a transformer is characterized by comprising five connecting pins, two linkage pieces, a connecting pin mounting seat and a linkage piece driving device; the five connecting pins are distributed on the connecting pin mounting seat at intervals along a straight line and are respectively a first connecting pin, a second connecting pin, a third connecting pin, a fourth connecting pin and a fifth connecting pin, the two circular linkage pieces are arranged on the linkage piece driving device and are adjacently distributed along the straight line direction of the five connecting pins at the left and right, the two circular linkage pieces are respectively a left linkage piece and a right linkage piece, and the distance between the linkage pieces is twice the distance between the connecting pins; the linkage sheet driving device comprises a limiting groove, a push rod, a U-shaped bracket and an electromagnetic driver; the linkage piece is installed on the push rod through a limiting groove of a built-in spring, the push rod is limited by a pair of U-shaped supports installed on the bottom plate and can axially slide, one end of the push rod is connected with the electromagnetic driver, the linkage piece synchronously moves to form two connection structures which are respectively a positive connection pressure regulating branch connection structure and a negative connection pressure regulating branch connection structure, and each linkage piece is respectively and simultaneously conducted with two corresponding connection pins.
2. The five-pin polarity transfer switch for the voltage regulating switch of the transformer according to claim 1, wherein the first connecting pin is connected with a lower side output tap of the voltage regulating winding in the voltage regulating circuit of the transformer, the second connecting pin is connected with a voltage regulating branch in the voltage regulating circuit of the transformer, other voltage regulating branches in the voltage regulating circuit of the transformer are connected with respective corresponding output taps of the voltage regulating winding branches in the voltage regulating circuit of the transformer, the third connecting pin is connected with an upper side input tap of the voltage regulating winding in the voltage regulating circuit of the transformer, the fourth connecting pin is connected with an output tap of the main winding in the voltage regulating circuit of the transformer, and the fifth connecting pin is connected with a lower side output tap of the voltage regulating winding in the voltage regulating circuit of the transformer; the polarity reversing switch forms two connection relations along with the synchronous slippage of the two linkage pieces, the first connection relation is that the left linkage piece is simultaneously communicated with the first connecting pin and the second connecting pin, and the right linkage piece is simultaneously communicated with the third connecting pin and the fourth connecting pin; the second connection relationship is that the left linkage piece is connected with the second and the third connection pins at the same time, and the right linkage piece is connected with the fourth and the fifth connection pins at the same time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022446540.6U CN213959975U (en) | 2020-10-29 | 2020-10-29 | Five-pin polarity switch special for voltage regulating switch of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022446540.6U CN213959975U (en) | 2020-10-29 | 2020-10-29 | Five-pin polarity switch special for voltage regulating switch of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213959975U true CN213959975U (en) | 2021-08-13 |
Family
ID=77205746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022446540.6U Active CN213959975U (en) | 2020-10-29 | 2020-10-29 | Five-pin polarity switch special for voltage regulating switch of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213959975U (en) |
-
2020
- 2020-10-29 CN CN202022446540.6U patent/CN213959975U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103119679A (en) | Tap changer and vacuum switching tube for such a tap changer | |
| CN104952603A (en) | Voltage-regulating capacitance-regulating tap switch adopting vacuum arc-extinguishing chambers | |
| CN204884831U (en) | Adopt vacuum interrupter's pressure regulating to transfer appearance tapping switch | |
| CN213402869U (en) | Voltage regulating circuit of nine-gear transformer | |
| CN213959975U (en) | Five-pin polarity switch special for voltage regulating switch of transformer | |
| CN104205273A (en) | On-load tap changer having at least two vacuum interrupters, and drive for a load changeover switch having at least two vacuum interrupters | |
| CN214012768U (en) | Transformer voltage regulating switch with interlocking function | |
| CN107968002A (en) | A kind of permanent magnet vacuum on-load tap changer | |
| CN114430245A (en) | Five-pin polarity switch special for voltage regulating switch of transformer | |
| CN112201496A (en) | Driving device for transformer voltage regulating switch operating mechanism | |
| CN208240516U (en) | A kind of permanent magnet vacuum on-load tap changer | |
| CN210091890U (en) | Nine-gear transformer on-load voltage regulation circuit with polarity conversion | |
| CN209962890U (en) | On-load tap-changer capacity and voltage regulating device and on-load tap-changer | |
| CN212874298U (en) | On-load tap-changer switching device | |
| CN213341735U (en) | Dual-power transfer switch and power distribution cabinet with same | |
| CN100397535C (en) | Automatic change-over switch of optimization power supply | |
| CN213402868U (en) | Five-pin polarity switch circuit for transformer voltage regulating circuit | |
| CN114430247A (en) | Voltage regulating circuit of nine-gear transformer | |
| CN114430246B (en) | Voltage regulating circuit of five-gear transformer | |
| CN205943786U (en) | On -load tap -changer's moving contact subassembly | |
| CN112201497A (en) | Transformer voltage regulating switch operating mechanism with interlocking function | |
| CN101419861B (en) | Large capacity single body phase angle regulator | |
| CN110224645A (en) | A kind of nine with dipole inversion grade transformer on-load voltage regulating circuit | |
| CN2157585Y (en) | Moving contact mechanism for compound vacuum loaded tap switch | |
| CN106710906B (en) | A kind of special on-load voltage regulating switch of distribution transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |