CN203858533U - Dry-type alternating-current (AC) voltage-stabilizing transformer for mining - Google Patents
Dry-type alternating-current (AC) voltage-stabilizing transformer for mining Download PDFInfo
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- CN203858533U CN203858533U CN201420243392.XU CN201420243392U CN203858533U CN 203858533 U CN203858533 U CN 203858533U CN 201420243392 U CN201420243392 U CN 201420243392U CN 203858533 U CN203858533 U CN 203858533U
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Abstract
The utility model discloses a dry-type alternating-current (AC) voltage-stabilizing transformer for mining. The dry-type AC voltage-stabilizing transformer comprises a flameproof shell, a wire inlet device, a wire outlet device and a dry-type variable-turn transformer. The dry-type variable-turn transformer comprises a primary side, a secondary side, an on-load tap switch component and a voltage stabilizing controller. A fine adjustment winding or a rough adjustment winding is arranged on the primary side or/on the secondary side. A plurality of taps are arranged on the fine adjustment winding and the rough adjustment winding. The taps are electrically connected onto sliders of the on-load tap switch component. The taps of the rough adjustment winding are used for changing the turns of the winding on a large scale. The taps of the fine adjustment winding are used for changing the turns of the coil on a small scale. The voltage stabilizing controller is respectively connected with the primary side and the secondary side of the dry-type AC voltage-stabilizing transformer to detect voltage of the primary side and the secondary side of the dry-type AC voltage-stabilizing transformer. By the taps arranged on the primary side and the secondary side of the transformer, an objective of realizing wide-range accurate stabilizing with few taps is achieved, and the problem of low power supply quality under a mine is solved.
Description
Technical field
The utility model relates to a kind of AC stabilized transformer, relates in particular to a kind of mine dry-type AC stabilized transformer for mine three-phase three-wire system power supply grid.
Background technology
At present, along with the extension of down-hole electrical network, the power supply quality of electrical network end declines gradually, especially longer mine of the period of service, the power supply quality of electrical network end can not meet the normal startup of consumer, the needs of operation, is mainly manifested in line drop large, electric motor starting difficulty.In order to address the above problem, at present the general way that improves supply voltage that adopts solves, but when this solution can be brought circuit zero load or underloading again, voltage surpasses allowed band, cause the drawback of potential danger; In addition, the longer mine of power supply distance, because power supply quality is poor, all will bring and have a strong impact on the production of whole mine.Due to the particular surroundings of mine, all electrical equipments, must not use oil-filled type and oil immersed, can only use dry type.
Current mining transformer, generally by the mode of the adjustable tap of manual change, makes the output voltage of transformer meet the needs of consumer; Therefore but be generally applicable to the more stable situation of line voltage, when line voltage frequent variations, can not meet the needs of consumer, be badly in need of a kind ofly can when line voltage frequent variations, still meeting the AC stabilized transformer of consumer demand.
Utility model content
The problem that the power supply quality of above-mentioned raising power system in mines end is low in order to solve, delivery end spread of voltage is difficult to meet device requirement during line voltage frequent variations, the utility model provides a kind of mine dry-type AC stabilized transformer.
A kind of mine dry-type AC stabilized transformer of the utility model, comprise flameproof enclosure, line leading device, outgoing line device, the variable number of turn transformer of dry type, the variable number of turn transformer of described dry type comprises former limit and secondary, on described former limit and secondary, be provided with conventional winding, described mine dry-type AC stabilized transformer also comprises band on-load shunting switch assembly and voltage-stabilizing controller.
Described former limit or secondary are provided with coarse adjustment winding;
On described coarse adjustment winding, be provided with some taps, described tap is connected electrically on the slider of the described switch with on-load shunting switch assembly;
Described coarse adjustment tap is for changing coil turn on a large scale;
Described voltage-stabilizing controller connects respectively former limit and the secondary of described mine dry-type AC stabilized transformer, and it is for detection of the voltage of the adjustable number of turn transformer primary side of dry type and secondary.
Described mine dry-type AC stabilized transformer also comprises accurate adjustment winding, and described accurate adjustment winding is arranged on described former limit or secondary;
On described accurate adjustment winding, be provided with some taps, described tap is connected electrically on another group slider of the described switch with on-load shunting switch assembly;
Described accurate adjustment tap is for changing among a small circle coil turn.
Described mine dry-type AC stabilized transformer also comprises the first controller and second controller;
Described coarse adjustment winding, conventional winding, accurate adjustment winding are connected successively, and are arranged on former limit or the secondary of the adjustable number of turn transformer of dry type;
Described band on-load shunting switch assembly comprises two groups of switches, and wherein the slider of one group of switch connects the tap of described accurate adjustment winding, and the slider of another group switch connects the tap of described coarse adjustment winding;
One end of described the first controller and one end of second controller be two groups of switches of connecting band on-load shunting switch assembly respectively, and for controlling the contact position with on-load shunting switch assembly;
The other end of described the first controller and second controller is connected to form common port, and connects voltage-stabilizing controller;
Described voltage-stabilizing controller is for controlling described the first controller and second controller according to the requirement of transformer output voltage, thereby control connects the corresponding tap of the variable number of turn transformer of dry type with the slider of on-load shunting switch assembly.
Or described conventional winding, accurate adjustment winding are connected successively, form former limit or the secondary of the adjustable number of turn transformer of dry type, correspondingly, described coarse adjustment winding is arranged on secondary or the former limit of the adjustable number of turn transformer of dry type.
Described the first controller and second controller adopt the relay-operated controller with position-detection sensor;
Described voltage-stabilizing controller is comprised of voltage sensor and PID controller;
Described line leading device and described outgoing line device also comprise line protective devices and isolating switch.
The utility model is by arranging tap at transformer primary side and secondary, is used for respectively coarse adjustment and accurate adjustment, reached the object that realizes the accurate voltage stabilizing of wide region with less tap, and reduced the manufacture difficulty of transformer, solved the low problem of power supply quality under mine.
Accompanying drawing explanation
Fig. 1 is the accurate adjustment winding of mine dry-type voltage stabilized transformer of the present utility model and the structural representation that coarse adjustment winding is arranged on former limit.
Fig. 2 is the structural representation that the coarse adjustment winding of mine dry-type voltage stabilized transformer of the present utility model is arranged on secondary.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail:
As shown in Figure 1, the mine dry-type AC stabilized transformer of the present embodiment, comprises flameproof enclosure 16, the variable number of turn transformer of dry type, line leading device 14, outgoing line device 15, the first controller 7, second controller 8, voltage-stabilizing controller 9, conventional winding 4, accurate adjustment winding 5, coarse adjustment winding 6, band on-load shunting switch assembly 3.Wherein line leading device 14, outgoing line device 15 comprise respectively line protector 12 and isolating switch 13.
Wherein, conventional winding 4, accurate adjustment winding 5, coarse adjustment winding 6 are arranged on the former limit of the adjustable number of turn transformer of dry type, on accurate adjustment winding 5 and coarse adjustment winding 6, are respectively arranged with tap.
Slider with on-load shunting switch assembly 3 comprises two groups, and the tap of accurate adjustment winding 5 and coarse adjustment winding 6 is electrically coupled to respectively on the slider with two groups of switches of on-load shunting switch assembly 3.
One end of one end of the first controller 7 and second controller 8 is two groups of switches of connecting band on-load shunting switch assembly 3 respectively, and for controlling the contact position with on-load shunting switch assembly 3; The other end of the first controller 7 and second controller 8 is connected to form common port, and connects voltage-stabilizing controller 9.One end of voltage-stabilizing controller 9 connects the former limit of the adjustable number of turn transformer of dry type, the other end connects the secondary of the adjustable number of turn transformer of dry type, voltage-stabilizing controller 9 is for detection of the voltage of the adjustable number of turn transformer primary side of dry type and secondary, and control the first controller 7 and second controller 8 according to the requirement of transformer output voltage, thereby control the corresponding tap that connects the variable number of turn transformer of dry type with on-load shunting switch assembly 3, to keep output voltage stabilization in certain limit.
As shown in Figure 2, do not changing on the basis of above example structure, coarse adjustment winding 6 is arranged on secondary, forms another embodiment of the present utility model.
In the present embodiment, dry type is adjustable number of turn transformer, conventional winding 4, accurate adjustment winding 5 form the former limit of the adjustable number of turn transformer of dry type, and coarse adjustment winding 6 is arranged on secondary.
Switch with on-load shunting switch assembly 3 comprises two groups, connects respectively the tap of accurate adjustment winding 5 and coarse adjustment winding 6 with the slider of two groups of switches of on-load shunting switch assembly 3.
Wherein, for connecting the slider of one group of switch with on-load shunting switch assembly 3 of the tap of coarse adjustment winding 6, be connected to the first controller 7; For connecting the slider of one group of switch with on-load shunting switch assembly 3 of the tap of accurate adjustment winding 5, be connected to second controller 8; The other end of the first controller 7 and second controller 8 is connected to form common port, and connects voltage-stabilizing controller 9.
In above-mentioned two embodiment, the combination of accurate adjustment winding 5 and coarse adjustment winding 6 take less tap realize wide voltage stabilized range and high-precision requirement wherein accurate adjustment winding 5 be provided with between 10 tap taps voltage and be provided with 3 taps as 1% coarse adjustment winding 6, between tap, voltage is 10%, its voltage stabilized range is 20%, and precision is 1%.The relay-operated controller that the first controller 7 and second controller 8 adopt with position sensor; Voltage-stabilizing controller 9 is comprised of voltage sensor and PID controller, wherein, voltage sensor is for gathering the voltage of the former limit of mine dry-type AC stabilized transformer and secondary, and the signal of PID controller receiver voltage sensor collection is also exported corresponding control signal to the first controller 7 and second controller 8.
Above embodiment is described preferred implementation of the present utility model; not scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that the common engineering technical personnel in this area make the technical solution of the utility model, all should fall in the definite protection domain of claims of the present utility model.
Claims (5)
1. a mine dry-type AC stabilized transformer, comprise flameproof enclosure (16), line leading device (14), outgoing line device (15), the variable number of turn transformer of dry type, the variable number of turn transformer of described dry type comprises former limit and secondary, on described former limit and secondary, be provided with conventional winding (4), it is characterized in that, described mine dry-type AC stabilized transformer also comprises band on-load shunting switch assembly (3), voltage-stabilizing controller (9);
Described former limit or secondary are provided with coarse adjustment winding (6);
On described coarse adjustment winding (6), be provided with some taps, described tap is connected electrically on the slider of switch of described band on-load shunting switch assembly (3);
Described coarse adjustment tap is for changing coil turn on a large scale;
Described voltage-stabilizing controller (9) connects respectively former limit and the secondary of described mine dry-type AC stabilized transformer, and it is for detection of the voltage of the adjustable number of turn transformer primary side of dry type and secondary.
2. mine dry-type AC stabilized transformer according to claim 1, is characterized in that,
Also comprise accurate adjustment winding (5), described accurate adjustment winding (5) is arranged on described former limit or secondary;
On described accurate adjustment winding (5), be provided with some taps, described tap be connected electrically in described band on-load shunting switch assembly (3) switch another group slider on;
Described accurate adjustment tap is for changing among a small circle coil turn.
3. mine dry-type AC stabilized transformer according to claim 2, is characterized in that,
Also comprise the first controller (7) and second controller (8);
Described coarse adjustment winding (6), conventional winding (4), accurate adjustment winding (5) are connected successively, and are arranged on former limit or the secondary of the adjustable number of turn transformer of dry type;
Described band on-load shunting switch assembly (3) comprises two groups of switches, and wherein the slider of one group of switch connects the tap of described accurate adjustment winding (5), and the slider of another group switch connects the tap of described coarse adjustment winding (6);
One end of one end of described the first controller (7) and second controller (8) is two groups of switches of connecting band on-load shunting switch assembly (3) respectively, and for controlling the contact position of band on-load shunting switch assembly (3);
The other end of described the first controller (7) and second controller (8) is connected to form common port, and connects voltage-stabilizing controller (9);
Described voltage-stabilizing controller (9) is for control described the first controller (7) and second controller (8) according to the requirement of transformer output voltage, thereby the slider of control band on-load shunting switch assembly (3) connects the corresponding tap of the variable number of turn transformer of dry type.
4. mine dry-type AC stabilized transformer according to claim 2, is characterized in that,
Also comprise the first controller (7) and second controller (8);
Described conventional winding (4), accurate adjustment winding (5) are connected successively, form former limit or the secondary of the adjustable number of turn transformer of dry type, and correspondingly, described coarse adjustment winding (6) is arranged on secondary or the former limit of the adjustable number of turn transformer of dry type;
Described band on-load shunting switch assembly (3) comprises two groups of switches, and wherein the slider of one group of switch connects the tap of described accurate adjustment winding (5), and the slider of another group switch connects the tap of described coarse adjustment winding (6);
One end of one end of described the first controller (7) and second controller (8) is two groups of switches of connecting band on-load shunting switch assembly (3) respectively, and for controlling the contact position of band on-load shunting switch assembly (3);
The other end of described the first controller (7) and second controller (8) is connected to form common port, and connects voltage-stabilizing controller (9);
Described voltage-stabilizing controller (9) is for control described the first controller (7) and second controller (8) according to the requirement of transformer output voltage, thereby the slider of control band on-load shunting switch assembly (3) connects the corresponding tap of the variable number of turn transformer of dry type.
5. according to the mine dry-type AC stabilized transformer described in claim 3 or 4, it is characterized in that,
Described the first controller (7) and second controller (8) adopt the relay-operated controller with position-detection sensor;
Described voltage-stabilizing controller (9) is comprised of voltage sensor and PID controller;
Described line leading device (14) also comprises line protective devices (12) and isolating switch (13) with described outgoing line device (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420243392.XU CN203858533U (en) | 2014-05-13 | 2014-05-13 | Dry-type alternating-current (AC) voltage-stabilizing transformer for mining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420243392.XU CN203858533U (en) | 2014-05-13 | 2014-05-13 | Dry-type alternating-current (AC) voltage-stabilizing transformer for mining |
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| Publication Number | Publication Date |
|---|---|
| CN203858533U true CN203858533U (en) | 2014-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420243392.XU Expired - Fee Related CN203858533U (en) | 2014-05-13 | 2014-05-13 | Dry-type alternating-current (AC) voltage-stabilizing transformer for mining |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109585144A (en) * | 2019-02-19 | 2019-04-05 | 江苏北辰互邦电力股份有限公司 | A kind of intelligent transformer |
-
2014
- 2014-05-13 CN CN201420243392.XU patent/CN203858533U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109585144A (en) * | 2019-02-19 | 2019-04-05 | 江苏北辰互邦电力股份有限公司 | A kind of intelligent transformer |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141001 Termination date: 20170513 |
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| CF01 | Termination of patent right due to non-payment of annual fee |