CN202905374U - Double-fracture resistance-type on-load capacity-adjusting tap switch - Google Patents
Double-fracture resistance-type on-load capacity-adjusting tap switch Download PDFInfo
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- CN202905374U CN202905374U CN 201220591624 CN201220591624U CN202905374U CN 202905374 U CN202905374 U CN 202905374U CN 201220591624 CN201220591624 CN 201220591624 CN 201220591624 U CN201220591624 U CN 201220591624U CN 202905374 U CN202905374 U CN 202905374U
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Abstract
The utility model discloses a double-fracture resistance-type on-load capacity-adjusting tap switch. Each of moving contacts of a high-voltage input end and a high-voltage (output) end is provided with a main arc contact and an auxiliary arc contact so as to form a double-fracture structure during D-connection and Y-connection conversion, enough contact program spacing is reserved to enable in-oil electric arcs to be lengthened and extinguished, and recovery voltage of each contact fracture is decreased by half to enable electric arcs between the contact fractures to be extinguished and no longer burned when alternating current crosses the zero point. Each of a high-voltage portion and a low-voltage portion is provided with a single-resistor transition circuit, and by the aid of arrangement of transition resistors, the on-load capacity-adjusting tap switch performs automatic switching between large capacity and small capacity with load uninterrupted. By reasonable matching of the transition resistors, switching tasks of high-voltage and low-voltage change-over contacts can be reduced effectively to enable electric arcs of high-voltage contacts and low-voltage contacts to be reliably distinguished. Circulating current of the low-pressure change-over contact can be effectively decreased, and service life of low-pressure contacts is prolonged. Besides, the double-fracture resistance-type on-load capacity-adjusting tap switch is simpler in structure, more reasonable in design, more convenient to mount and more reliable in use.
Description
Technical field
The utility model belongs to the transformer switch field, relates in particular to the loaded capacity-regulated shunting switch of a kind of double-fracture resistance-type.
Background technology
Electric energy will repeatedly boost by power transformer from the power plant to user, step-down.Although the efficient of transformer own is very high, the factor amount is many, capacity is large, and its total losses are still very large.According to statistics, the total losses of China's transformer account for 10% of system's energy output; And in the intermediate and low electric network loss that accounts for electrical network total losses 60% ~ 65%, 70% loss is approximately arranged on distribution transformer.If transformer loss can reduce by 1%, the annual over ten billion degree electricity of just can saving.Because the seasonality of rural power grids load is strong, the load peak-valley difference is large, causes the loss ratio of present China rural power grids distribution transformer larger, cause a large amount of electric power resource wastes.
Loaded capacity-regulated transformer is a kind of transformer with two kinds of rated capacities of size, according to payload, utilize special capacitance switch to come (dividing without excitation capacity transfer and loaded capacity-regulated) connected mode of conversion winding, (transformer high-pressure side winding when large capacity is that D connects operation in switching between two kinds of different capabilities of realization transformer, be that Y connects operation during low capacity, the low-pressure side winding is converted to the series connection of low capacity by jumbo series-parallel connection).Make no-load loss and the load loss of capacitance-adjustable transformer all fall lowlyer, especially the total losses during light running are more much lower than the total losses of same capability other types transformer.Low without little, the online controlled ability of excitation capacity transfer transformer capacity, can not charged pondage, generally only carry out seaonal load and regulate, and can have influence on user's power supply reliability when regulating.Loaded capacity-regulated transformer can effectively solve and eliminate existing the problems referred to above and limitation without the excitation capacitance-adjustable transformer, energy auto-real-time monitoring and control, carry out capacity regulating according to actual load size reasonable ground, thereby further enlarge the range of application of capacitance-adjustable transformer.
Summary of the invention
In order to solve above-mentioned technical problem, the purpose of this utility model provides the loaded capacity-regulated shunting switch of a kind of double-fracture resistance-type, simple in structure, easy for installation, use reliable.
To achieve the above object, the utility model has adopted following technical scheme:
The loaded capacity-regulated shunting switch of double-fracture resistance-type comprises motor, quick mechanism, insulating cylinder, insulation spindle and contact system, and described contact system comprises low-pressure section and high-pressure section; Described contact system comprises the moving contact that is installed on the insulation spindle and the contact of deciding that is installed on the insulating cylinder; Described contact system high-pressure section is divided into three-phase, every high input voltage contact and high-voltage contact of comprising mutually, and described high input voltage contact and high-voltage contact are arranged with layer; Described high input voltage contact comprises that high input voltage moving contact and high input voltage decide contact, and the high input voltage moving contact comprises a high input voltage main arc contact and the auxiliary arcing contact of a high input voltage; High input voltage is decided contact and is comprised that a Y connects high input voltage and decides contact and a D and connect high input voltage and decide contact, the auxiliary arcing contact of described high input voltage main arc contact and high input voltage connects at D, Y connects in the conversion process respectively connects high input voltage with described D and decide contact and Y and connects high input voltage and decide contact and be electrically connected, and Y connects high input voltage to be decided contact and D and connect high input voltage and decide contact and be electrically connected by conducting connecting part; Described high-voltage contact comprises high pressure moving contact and high compression set contact, and the high pressure moving contact comprises a high pressure main arc contact and the auxiliary arcing contact of a high pressure; High compression set contact comprises that a Y connects high compression set contact and a D connects high compression set contact, and the auxiliary arcing contact of described high pressure main arc contact and high pressure connects at D, Y connects and connects high compression set contact with described D respectively in the conversion process and Y connects high compression set contact electrical connection; Wherein, high input voltage main arc contact and the electrical connection of high pressure main arc contact, the auxiliary arcing contact of high input voltage is via a transition resistance and the auxiliary arcing contact electrical connection of high pressure.
As preferably, described moving contact be connected contact and connect by clip type contact structures or rolling type contact structures.
As preferably, described Y connects high input voltage to be decided contact and D and connects high input voltage and decide two binding posts that contact is installed in respectively the insulating cylinder outside and be electrically connected by conducting connecting part.
The utility model is owing to adopting the technical scheme of above cross connection type contact, the moving contact of high voltage input terminal and high pressure (output) end all arranges main arc contact and auxiliary arcing contact, thereby connect at D, Y connects in the conversion process and to form the double-fracture structure, having enough contact programs to open apart from electric arc is elongated extinguishes, and the recovery voltage of each contact fracture reduces half, makes electric arc no longer combustion after the alternating current zero crossing extinguishes between the contact fracture; High-pressure section and low-pressure section all arrange single resistor transition circuit, the transition resistance setting makes loaded capacity-regulated shunting switch not carry out the automatic conversion of large low capacity under the interruptible load, Proper Match by its transition resistance, can effectively reduce the task switching of high-low pressure change over contact, impel the electric arc of high-low pressure contact to extinguish reliably; And can effectively reduce low pressure change over contact circulating current, improve the life-span of low-voltage contact; Structure is more simple, layout is more reasonable, easier for installation, it is more reliable to use.
Description of drawings
Fig. 1 is the structural representation of embodiment 1;
Fig. 2 is the A-A cutaway view (D connects state) of Fig. 1;
Fig. 3 is the A-A cutaway view (Y connects state) of Fig. 1;
Fig. 4 is capacity transfer high-tension line figure of the present utility model (D connects state);
Fig. 5 is capacity transfer high-tension line figure of the present utility model (Y connects state).
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is made a detailed explanation.
Embodiment 1:
The loaded capacity-regulated switch of double-fracture resistance-type transiens as shown in Figure 1 comprises housing 1, motor 2, quick mechanism 3, insulating cylinder 5, insulation spindle 4 and contact system, and described contact system comprises low-pressure section and high-pressure section; Described contact system comprises the moving contact that is installed on the insulation spindle 4 and the contact of deciding that is installed on the insulating cylinder 5; Described contact system low-pressure section is divided into three-phase, and hang down compression set contact 9, low pressure moving contact 10 and low pressure transition resistance 11 every comprising mutually; Described contact system high-pressure section is divided into three-phase (A phase, B phase, C phase), every high input voltage contact and high-voltage contact of comprising mutually, and described high input voltage contact and high-voltage contact are arranged with layer; Such as Fig. 2, shown in Figure 3, described high input voltage contact comprises that high input voltage moving contact and high input voltage decide contact, the high input voltage moving contact comprises the auxiliary arcing contact 82 of a high input voltage main arc contact 81 and a high input voltage, and high input voltage is decided contact and comprised that a Y connects high input voltage and decides contact 61 and a D and connect high input voltage and decide contact 62; The auxiliary arcing contact 82 of described high input voltage main arc contact 81 and high input voltage connects at D, Y connects in the conversion process respectively connects high input voltage with described D and decide contact 62 and Y and connects high input voltage and decide contact 61 and contact electrical connection, and Y connects high input voltage to be decided contact 61 and D and connect high input voltage and decide two binding posts that contact 62 is installed in respectively insulating cylinder 5 outsides and pass through conducting connecting part 60 and be electrically connected; Described high-voltage contact comprises high pressure moving contact and high compression set contact, and the high pressure moving contact comprises a high pressure main arc contact 83 and the auxiliary arcing contact 84 of a high pressure, and high compression set contact comprises that a Y connects high compression set contact 63 and a D connects high compression set contact 64; The auxiliary arcing contact 84 of described high pressure main arc contact 83 and high pressure connects at D, Y connects in the conversion process respectively connects high compression set contact 64 with described D and connects high compression set contact 63 with Y and contact electrical connection; Wherein, high input voltage main arc contact 81 and 83 electrical connections of high pressure main arc contact, the auxiliary arcing contact 82 of high input voltage is via auxiliary arcing contact 84 electrical connections of transition resistance 7 and high pressure.Described moving contact be connected contact and connect by the clip type contact structures.
Fig. 4, Fig. 5 are capacity transfer high-tension line figure of the present utility model, and wherein, A, B, C are three-phase, R
A, R
B, R
CBe Transformer Winding, R
KBe transition resistance.Mutually as example, when D connects such as Fig. 2, shown in Figure 4, high input voltage main arc contact 81 and D connect high input voltage decide contact 62 and to connect take A, high input voltage main arc contact 81 and 83 electrical connections of high pressure main arc contact, and high pressure main arc contact 83 connects high compression set contact 64 connections with D; During conversion, insulation spindle rotates, the high input voltage main arc contact of each phase and D connect high input voltage to be decided contact and disengages, the auxiliary arcing contact of the high input voltage of each phase and D connect high input voltage and decide contact, simultaneously, the high pressure main arc contact of each phase and D connect high compression set contact and disengage, and the auxiliary arcing contact of the high pressure of each phase and D connect high compression set contact; Decide contact until main arc contact and Y connect, realize that Y connects, such as Fig. 3, shown in Figure 5, at this moment, the high input voltage main contact of each phase and Y connect high input voltage and decide the contact connection, and the high pressure main arc contact of each phase and Y connect high compression set contact and connect.
Claims (3)
1. the loaded capacity-regulated shunting switch of double-fracture resistance-type comprises motor (2), quick mechanism (3), insulating cylinder (5), insulation spindle (4) and contact system; Described contact system comprises low-pressure section and high-pressure section; Described contact system comprises the moving contact that is installed on the insulation spindle (4) and the contact of deciding that is installed on the insulating cylinder (5); Described contact system high-pressure section is divided into three-phase, and every high input voltage contact and high-voltage contact of comprising mutually is characterized in that, described high input voltage contact and high-voltage contact are arranged with layer; Described high input voltage contact comprises that high input voltage moving contact and high input voltage decide contact, the high input voltage moving contact comprises the auxiliary arcing contact (82) of a high input voltage main arc contact (81) and a high input voltage, and high input voltage is decided contact and comprised that a Y connects high input voltage and decides contact (61) and a D and connect high input voltage and decide contact (62); The auxiliary arcing contact (82) of described high input voltage main arc contact (81) and high input voltage connects at D, Y connects in the conversion process respectively connects high input voltage with described D and decide contact (62) and Y and connects high input voltage and decide contact (61) and contact electrical connection, and Y connects high input voltage to be decided contact (61) and D and connect high input voltage and decide contact (62) and pass through conducting connecting part (60) and be electrically connected; Described high-voltage contact comprises high pressure moving contact and high compression set contact, and the high pressure moving contact comprises a high pressure main arc contact (83) and the auxiliary arcing contact (84) of a high pressure, and high compression set contact comprises that a Y connects high compression set contact (63) and a D connects high compression set contact (64); The auxiliary arcing contact (84) of described high pressure main arc contact (83) and high pressure connects at D, Y connects in the conversion process respectively connects high compression set contact (64) with described D and connects high compression set contact (63) with Y and contact electrical connection; Wherein, high input voltage main arc contact (81) and high pressure main arc contact (83) electrical connection, high input voltage assist arcing contact (82) via auxiliary arcing contact (84) electrical connection of a transition resistance (7) and high pressure.
2. the loaded capacity-regulated shunting switch of double-fracture resistance-type according to claim 1 is characterized in that, described moving contact be connected contact and connect by clip type contact structures or rolling type contact structures.
3. the loaded capacity-regulated shunting switch of double-fracture resistance-type according to claim 1, it is characterized in that, described Y connects high input voltage to be decided contact (61) and D and connects high input voltage and decide contact (62) and be installed in respectively two binding posts of insulating cylinder (5) outside by conducting connecting part (60) electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220591624 CN202905374U (en) | 2012-11-09 | 2012-11-09 | Double-fracture resistance-type on-load capacity-adjusting tap switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220591624 CN202905374U (en) | 2012-11-09 | 2012-11-09 | Double-fracture resistance-type on-load capacity-adjusting tap switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202905374U true CN202905374U (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220591624 Expired - Fee Related CN202905374U (en) | 2012-11-09 | 2012-11-09 | Double-fracture resistance-type on-load capacity-adjusting tap switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202905374U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108922758A (en) * | 2018-07-09 | 2018-11-30 | 闫福录 | A kind of pluggable transformer of Split type three-phase and replacing options |
-
2012
- 2012-11-09 CN CN 201220591624 patent/CN202905374U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108922758A (en) * | 2018-07-09 | 2018-11-30 | 闫福录 | A kind of pluggable transformer of Split type three-phase and replacing options |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20130424 Termination date: 20211109 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |