CN202678073U - On-load capacitance-adjusting switch with four fractures connected in series - Google Patents
On-load capacitance-adjusting switch with four fractures connected in series Download PDFInfo
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- CN202678073U CN202678073U CN 201220263501 CN201220263501U CN202678073U CN 202678073 U CN202678073 U CN 202678073U CN 201220263501 CN201220263501 CN 201220263501 CN 201220263501 U CN201220263501 U CN 201220263501U CN 202678073 U CN202678073 U CN 202678073U
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Abstract
The utility model discloses an on-load capacitance-adjusting switch with four fractures connected in series. The switch adopts the structure that by arranging two transition contacts at a high-voltage part, four fractures connected in series are formed between high-voltage input contacts and high-voltage contacts, so that a higher switching voltage is evenly distributed to the four fractures formed by movable contacts and fixed contacts; each fracture voltage is lower than arc-quenching voltage, so that a capacitance-adjusting switch has a high on-load switching capability as well as a high insulation and withstand voltage level; the three phases of the high-voltage part are independently arranged; each the high-voltage input contact and the high-voltage contact of each phase are respectively arranged in an upper layer and a lower layer; and one transition contact and the high-voltage inputs as well as the other transition contact and the high-voltage contacts are both arranged in the same layer, so that the switch has a more simple structure, a more reasonable layout, more reliable operation, more convenient installation, and better arc quenching, insulation and withstand voltage effects.
Description
Technical field
The utility model belongs to the transformer switch field, relates in particular to the loaded capacity-regulated switch of a kind of series connection four fractures.
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 arranged approximately 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, causes the waste of a large amount of electric power resources.
Loaded capacity-regulated transformer is a kind of transformer with two kinds of rated capacities of size, according to payload, utilize special capacitance switch (minute no-load capacity transfer and loaded capacity-regulated) to come the connected mode of conversion winding, realize the switching (transformer high-pressure side winding when large capacity is that D connects operation, is that Y connects operation during low capacity) between two kinds of different capabilities of transformer.The no-load loss of capacitance-adjustable transformer and load loss are all lower, and especially the total losses during light running are more much lower than the total losses of same capability other types transformer.Little, the online controlled ability of no-load capacitance-regulating transformer capacity is low, can not charged pondage, generally only carry out seasonality and regulate, and can have influence on user's power supply reliability when regulating.Loaded capacity-regulated transformer can effectively solve and eliminate the problems referred to above and the limitation of existing no-load capacitance-regulating transformer, and energy auto-real-time monitoring and control are carried out capacity regulating according to actual load size reasonable ground, thereby further enlarged the scope of application of capacitance-adjustable transformer.Transformer has the task switching that will finish Transformer Winding when carrying, and technical difficult points is the problem of high-pressure side contact reliable blow-out in the handoff procedure of star angle.
Summary of the invention
In order to solve above-mentioned technical problem, the purpose of this utility model provides the loaded capacity-regulated switch of a kind of series connection four fractures, thereby high-pressure section forms four series connection fractures by transition contact is set between high input voltage contact and high-voltage contact, so higher switched voltage just by mean allocation to by moving contact with decide four fractures that contact consists of, each fracture voltage all is lower than blowout voltage, and switch has higher switching capability and the voltage withstand class of carrying that have.
To achieve the above object, the utility model has adopted following technical scheme:
The loaded capacity-regulated switch of four fractures of connecting comprises motor, quick mechanism, insulating cylinder, main shaft 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 main shaft 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; 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 main contact and an auxiliary arcing contact, and high input voltage is decided contact and comprised that a D connects and decide contact and a Y and connect and decide contact; Described high-voltage contact comprises high pressure moving contact and high compression set contact, and the high pressure moving contact comprises a main contact and an auxiliary arcing contact, and high compression set contact comprises that a D connects to be decided contact and a Y and connect and decide contact; Described high input voltage contact and high-voltage contact are axially divided along main shaft, lower two-layer layout, be provided with the First Transition contact with the high input voltage contact with layer, it comprises that First Transition moving contact and First Transition decide contact, the First Transition moving contact comprises a main contact and an auxiliary arcing contact, it comprises that a D connects and decides contact and a Y and connect and decide contact, be provided with the second transition contact with high-voltage contact with layer, it comprises that the second transition moving contact and the second transition decide contact, the second transition moving contact comprises a main contact and an auxiliary arcing contact, and the second transition is decided contact and comprised that a D connects and decide contact and a Y and connect and decide contact; Wherein, the main contact electrical connection of the main contact of high input voltage moving contact and First Transition moving contact, the auxiliary arcing contact electrical connection of the auxiliary arcing contact of high input voltage moving contact and First Transition moving contact, the main contact electrical connection of the main contact of high pressure moving contact and the second transition moving contact, the auxiliary arcing contact electrical connection of the auxiliary arcing contact of high pressure moving contact and the second transition moving contact, the D that First Transition is decided contact connects and decides contact and the second transition and decide the D of contact and connect and decide the contact electrical connection, and the Y that First Transition decide contact connects and decides contact and the second transition and decide the Y of contact and connect and decide contact and be electrically connected.
Easy to connect for wiring, as preferably, the D that described high input voltage is decided contact connects and decides contact and be connected with Y and decide contact and connect by conduction gas connector.
As preferably, behind the auxiliary arcing contact series connection First Transition resistance of described high input voltage moving contact with the auxiliary arcing contact electrical connection of First Transition moving contact.
As preferably, the auxiliary arcing contact electrical connection with the second transition moving contact of connecting behind the second transition resistance of the auxiliary arcing contact of described high pressure moving contact.
The utility model is owing to adopted above technical scheme, thereby high-pressure section forms four series connection fractures by two transition contacts are set between high input voltage contact and high-voltage contact, so higher switched voltage just by mean allocation to by moving contact with decide four that contact consists of and break suitable for reading, each fracture voltage all is lower than blowout voltage, thereby capacitance switch has higher switching capability and the dielectric voltage withstand grade of carrying that have.High-pressure section three-phase respectively Independent is put, the high input voltage contact of every phase and high-voltage contact are divided upper and lower two-layer layout, transition contact and high input voltage contact, high-voltage contact arrange with layer respectively so that structure of the present utility model is more simple, layout more rationally, more reliable, easier for installation, the blow-out of operation and dielectric voltage withstand better effects if.
Description of drawings
Fig. 1 is the structural representation of embodiment 1;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the B-B cutaway view of Fig. 1;
Fig. 4 is that the A phase D of embodiment 1 connects schematic diagram;
Fig. 5 is that the A phase Y of embodiment 1 connects schematic diagram;
Fig. 6 is the high-pressure section line map of embodiment 1.
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 series connection four fractures as shown in Figure 1 comprises housing 1, motor 2, quick mechanism 3, insulating cylinder 5, main shaft 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 main shaft 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 (A phase, B phase, C 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), such as Fig. 2, shown in Figure 3, every high input voltage contact and high-voltage contact of comprising mutually, the high input voltage contact comprises that high input voltage moving contact and high input voltage decide contact, the high input voltage moving contact comprises a main contact 81 and an auxiliary arcing contact 811, high input voltage is decided contact and is comprised that a D connects and decide contact 61 and a Y and connect and decide contact 62, and both connect by conduction gas connector 12; Described high-voltage contact comprises high pressure moving contact and high compression set contact, and the high pressure moving contact comprises a main contact 84 and an auxiliary arcing contact 841, and high compression set contact comprises that a D connects to be decided contact 67 and a Y and connect and decide contact 68; Described high input voltage contact and high-voltage contact are axially divided along main shaft 4, lower two-layer layout, be provided with the First Transition contact with the high input voltage contact with layer, the First Transition contact comprises that First Transition moving contact and First Transition decide contact, the First Transition moving contact comprises a main contact 82 and an auxiliary arcing contact 821, First Transition is decided contact and is comprised that a D connects and decide contact 63 and a Y and connect and decide contact 64, be provided with the second transition contact with high-voltage contact with layer, the second transition contact comprises that the second transition moving contact and the second transition decide contact, the second transition moving contact comprises that a main contact 83 and auxiliary arcing contact 831, the second transition decide contact and comprise that a D connects and decide contact 65 and a Y and connect and decide contact 66; Wherein, such as Fig. 4, shown in Figure 5, the main contact 81 of high input voltage moving contact and 82 electrical connections of the main contact of First Transition moving contact, the auxiliary arcing contact 811 series connection First Transition resistance 71 auxiliary arcing contacts 821 rear and the First Transition moving contact of high input voltage moving contact are electrically connected, the main contact 84 of high pressure moving contact and 83 electrical connections of the main contact of the second transition moving contact, auxiliary arcing contact 831 with the second transition moving contact behind auxiliary arcing contact 841 series connection second transition resistance 72 of high pressure moving contact is electrically connected, the D that First Transition is decided contact connects and decides contact 63 and the second transition and decide the D of contact and connect and decide contact 65 electrical connections, and the Y that First Transition decide contact connects and decides contact 64 and the second transition and decide the Y of contact and connect and decide contact 66 and be electrically connected.Above-mentioned conduction gas connector 12 is metal connecting sheet.
Fig. 6 is the line map of present embodiment high-pressure section, and wherein, Ar is Transformer Winding, and X1, X2, X3 and X4 are the switch fracture, and R1, R2 are transition resistance.Take A mutually as example, when D connects as shown in Figure 4, the D that the main contact 81 of high input voltage moving contact and high input voltage are decided contact connects and decides contact 61 connections, the D that the main contact 82 of First Transition moving contact and First Transition are decided contact connects and decides contact 63 connections, the D that First Transition is decided contact connects and decides D that contact 63 decides contact by wire and the second transition and connect and decide contact 65 and be connected, the D that contact is decided in the main contact 83 of the second transition moving contact and the second transition connects and decides contact 65 and connect, and the main contact 84 of high pressure moving contact and the D of high compression set contact connect and decide contact 67 and connect; During conversion, main shaft rotates, the main contact of each moving contact and D connect and decide contact and disengage, the auxiliary arcing contact of each moving contact and D connect and decide contact, until connecing, main contact and Y decide contact, realize that Y connects, as shown in Figure 5, at this moment, the Y that the main contact 81 of high input voltage moving contact and high input voltage are decided contact connects and decides contact 62 connections, the Y that the main contact 82 of First Transition moving contact and First Transition are decided contact connects and decides contact 64 connections, the Y that First Transition is decided contact connects and decides Y that contact 64 decides contact by wire and the second transition and connect and decide contact 66 and be connected, the Y that contact is decided in the main contact 83 of the second transition moving contact and the second transition connects and decides contact 66 and connect, and the main contact 84 of high pressure moving contact and the Y of high compression set contact connect and decide contact 68 and connect.As from the foregoing, high input voltage contact, high-voltage contact, First Transition contact, the second transition contact consist of X1, X2, four switch fractures of X3, X4.
The utlity model has following characteristics:
(1) for the loaded capacity-regulated switch of lOkV single break, the Transformer Winding switched voltage is up to 5770V during the Y-D conversion.Although the blow-out of single break contact is difficulty especially.In order to ensure the difficult problem of the reliable blow-out of loaded capacity-regulated switch, the utility model technology is loaded capacity-regulated switch contact fracture four fracture textures that are set to connect.When four fractures of connecting cut-off, all there is electric arc to produce on its each fracture.Behind current over-zero, the recovery voltage decrease of each fracture is conducive to arc extinction between fracture; And only restrike simultaneously at the quadruple fracture, the again starting the arc, obviously this is more much more difficult than single break, so the arc extinguishing ability has strengthened.Connect four fractures by identical electric current (circulation that comprises transition circuit), so scaling loss is basic identical on four fracture contacts, so can keep for a long time balance during mechanism's operation;
(2) change for the Y-D of carrying that has that realizes capacitance switch.The utility model adopts the lighter single resistor transition circuit of contact task switching, the electrical endurance of the auxiliary arcing contact of favourable raising electricity, the quantity of the auxiliary arcing contact of electricity in the minimizing transition circuit;
(3) the utility model applicable " step voltage " is 4000-6000V.Whenever, adopt mutually two contact layers, three-phase arranges six contact layers altogether, and every phase two contact layers are mutually series connection on circuit.Therefore, structure of contact terminal can adopt the building blocks combination, and is compact succinct;
(4) the loaded capacity-regulated switch of the utility model comprises and decides contact, moving contact, insulating cylinder, operating mechanism and quick mechanism etc., six high pressure moving contacts of three-phase are contained on the insulation spindle from top to bottom, and the moving contact interlayer is without any electrical connection, and every layer the auxiliary arcing contact two ends of transition electricity are connected to transition resistance; Six high compression set contacts correspondingly are contained on the insulating cylinder that six floor heights press the contact periphery, every mutually two-layer electrical connection of having cylinder outer between contact decided.The three-phase low-voltage moving contact also is installed in and shares on the insulation spindle, and low compression set contact also correspondingly is contained on the shared insulating cylinder of low pressure moving contact periphery, and the high-low pressure contact shares a grease chamber.Therefore, loaded capacity-regulated construction of switch is simple, low cost of manufacture.
Claims (4)
1. the loaded capacity-regulated switch of four fractures of connecting comprises motor (2), quick mechanism (3), insulating cylinder (5), main shaft (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 main shaft (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, every high input voltage contact and high-voltage contact of comprising mutually, it is characterized in that, 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 a main contact (81) and an auxiliary arcing contact (811), and high input voltage is decided contact and comprised that a D connects and decide contact (61) and a Y and connect and decide contact (62); Described high-voltage contact comprises high pressure moving contact and high compression set contact, and the high pressure moving contact comprises a main contact (84) and an auxiliary arcing contact (841), and high compression set contact comprises that a D connects to be decided contact (67) and a Y and connect and decide contact (68); Described high input voltage contact and high-voltage contact are axially divided along main shaft (4), lower two-layer layout, be provided with the First Transition contact with the high input voltage contact with layer, the First Transition contact comprises that First Transition moving contact and First Transition decide contact, the First Transition moving contact comprises a main contact (82) and an auxiliary arcing contact (821), First Transition is decided contact and is comprised that a D connects and decide contact (63) and a Y and connect and decide contact (64), be provided with the second transition contact with high-voltage contact with layer, the second transition contact comprises that the second transition moving contact and the second transition decide contact, the second transition moving contact comprises a main contact (83) and an auxiliary arcing contact (831), and the second transition is decided contact and comprised that a D connects and decide contact (5) and a Y and connect and decide contact (66); Wherein, the main contact of high input voltage moving contact (81) is electrically connected with the main contact (82) of First Transition moving contact, the auxiliary arcing contact (811) of high input voltage moving contact and the electrical connection of the auxiliary arcing contact (821) of First Transition moving contact, the main contact of high pressure moving contact (84) is electrically connected with the main contact (83) of the second transition moving contact, the auxiliary arcing contact (841) of high pressure moving contact and the electrical connection of the auxiliary arcing contact (831) of the second transition moving contact, the D that First Transition is decided contact connects and decides contact (63) and the second transition and decide the D of contact and connect and decide contact (65) electrical connection, and the Y that First Transition decide contact connects and decides contact (64) and the second transition and decide the Y of contact and connect and decide contact (66) and be electrically connected.
2. the loaded capacity-regulated switch of series connection four fractures according to claim 1 is characterized in that, the D that described high input voltage is decided contact connects and decides contact (61) and be connected with Y and decide contact (62) and connect by conduction gas connector (12).
3. the loaded capacity-regulated switch of series connection four fractures according to claim 1, it is characterized in that auxiliary arcing contact (811) the series connection First Transition resistance (71) of described high input voltage moving contact auxiliary arcing contact (821) rear and the First Transition moving contact is electrically connected.
4. the loaded capacity-regulated switch of series connection four fractures according to claim 1 is characterized in that, the auxiliary arcing contact (831) with the second transition moving contact behind auxiliary arcing contact (841) series connection second transition resistance (72) of described high pressure moving contact is electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220263501 CN202678073U (en) | 2012-06-01 | 2012-06-01 | On-load capacitance-adjusting switch with four fractures connected in series |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220263501 CN202678073U (en) | 2012-06-01 | 2012-06-01 | On-load capacitance-adjusting switch with four fractures connected in series |
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| Publication Number | Publication Date |
|---|---|
| CN202678073U true CN202678073U (en) | 2013-01-16 |
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|---|---|---|---|
| CN 201220263501 Expired - Fee Related CN202678073U (en) | 2012-06-01 | 2012-06-01 | On-load capacitance-adjusting switch with four fractures connected in series |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103177861A (en) * | 2013-04-02 | 2013-06-26 | 江苏硕德开关有限公司 | On-load capacity-adjusting switch high voltage primary loop structure |
| CN103187183A (en) * | 2013-04-19 | 2013-07-03 | 浙江腾龙电器有限公司 | Oil immersion type double-layer contact vacuum on-load voltage regulation tapping switch for intelligent distribution network |
| CN108269704A (en) * | 2017-12-29 | 2018-07-10 | 国网北京市电力公司 | Load ratio bridging switch and transformer |
-
2012
- 2012-06-01 CN CN 201220263501 patent/CN202678073U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103177861A (en) * | 2013-04-02 | 2013-06-26 | 江苏硕德开关有限公司 | On-load capacity-adjusting switch high voltage primary loop structure |
| CN103187183A (en) * | 2013-04-19 | 2013-07-03 | 浙江腾龙电器有限公司 | Oil immersion type double-layer contact vacuum on-load voltage regulation tapping switch for intelligent distribution network |
| CN108269704A (en) * | 2017-12-29 | 2018-07-10 | 国网北京市电力公司 | Load ratio bridging switch and transformer |
| CN108269704B (en) * | 2017-12-29 | 2019-09-06 | 国网北京市电力公司 | Load ratio bridging switch and transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG TENGLONG APPLIANCE CO., LTD. Free format text: FORMER NAME: SANMEN TENGLONG ELECTRIC APPLIANCE CO., LTD., ZHEJIANG |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 317100, No. 263, Yang Yang Road, sea town, three counties, Taizhou, Zhejiang Patentee after: Zhejiang Tenglong Electrical Apparatus Co., Ltd. Address before: 317100, No. 263, Yang Yang Road, sea town, three counties, Taizhou, Zhejiang Patentee before: Sanmen Tonglong Electrical Equipment Co., Ltd., Zhejiang Prov. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20210601 |