CN204597825U - Generating set circulation water pump high and low speed switching device - Google Patents
Generating set circulation water pump high and low speed switching device Download PDFInfo
- Publication number
- CN204597825U CN204597825U CN201520333718.2U CN201520333718U CN204597825U CN 204597825 U CN204597825 U CN 204597825U CN 201520333718 U CN201520333718 U CN 201520333718U CN 204597825 U CN204597825 U CN 204597825U
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- China
- Prior art keywords
- voltage switch
- switch gear
- cabinet
- water pump
- low rate
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of generating set circulation water pump high and low speed switching device, belong to generating set circulation pump control unit technical field, switch unstable in order to solve prior art generating set circulation water pump high and low speed switching device ubiquity, the problem that failure rate is high.Comprise high-speed starting cabinet, low rate start cabinet, it is characterized in that, high-speed starting high-voltage switch gear is provided with in described high-speed starting cabinet, low rate start high-voltage switch gear is provided with in described low rate start cabinet, high-speed starting high-voltage switch gear and low rate start high-voltage switch gear all connect the main outlet box of motor, be provided with the first vacuum contactor connecting generator neutral point outlet box in described high-speed starting cabinet, in described low rate start cabinet, be provided with the second vacuum contactor connecting generator neutral point outlet box and the 3rd vacuum contactor connecting the main outlet box of motor.Switch for generator sets in power plant circulating water pump height low speed.
Description
Technical field
The utility model belongs to generating set circulation pump control unit technical field, refers to a kind of generating set circulation water pump high and low speed switching device especially.
Background technology
The circulating water pump of generating set is the highly energy-consuming equipment of power plant long-time running, often wastes when its design capacity runs in the winter time.Need to devise high low speed switching circuit according to the actual conditions of production scene to circulation-water pump electric machine in production reality, use high-speed electric expreess locomotive when summer, time in the winter time, use slowspeed machine, reduce energy consumption, raise the efficiency.
At present, generating set circulation water pump high and low speed switching device ubiquity switches unstable, the problem that failure rate is high.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of generating set circulation water pump high and low speed switching device, switches unstable, the problem that failure rate is high in order to overcome prior art.
For solving the problems of the technologies described above, the utility model provides a kind of generating set circulation water pump high and low speed switching device, comprise high-speed starting cabinet, low rate start cabinet, high-speed starting high-voltage switch gear is provided with in described high-speed starting cabinet, low rate start high-voltage switch gear is provided with in described low rate start cabinet, high-speed starting high-voltage switch gear and low rate start high-voltage switch gear all connect the main outlet box of motor, the first vacuum contactor connecting generator neutral point outlet box is provided with in described high-speed starting cabinet, the second vacuum contactor connecting generator neutral point outlet box and the 3rd vacuum contactor connecting the main outlet box of motor is provided with in described low rate start cabinet.
Described high-speed starting high-voltage switch gear and low rate start high-voltage switch gear adopt 6KV high-voltage switch gear.
Between described high-speed starting high-voltage switch gear and low rate start high-voltage switch gear, there is electric locking function.
The auxiliary contact of described high-speed starting high-voltage switch gear and low rate start high-voltage switch gear connect circulating water pump comprehensive protector.
Described first vacuum contactor, the second vacuum contactor and the 3rd vacuum contactor adopt 6KV vacuum contactor.
Described high-speed starting cabinet and low rate start cabinet connect power supply by incoming line cabinet.
The beneficial effect of technique scheme of the present utility model is as follows:
In such scheme, add high, low speed two high-voltage switch gears, between two switches, have electric blocking function, only have disconnection switch could allow another switch that closes, avoid the generation of short trouble.Increase by three contactors at circulating water pump outlet box simultaneously, the conversion of motor star-connection and delta connection can be completed.By realizing the high low cruise of motor coordinating between contactor with high-voltage switch gear, high low speed switches stable, failure rate is low.The auxiliary contact of high, low speed high-voltage switch gear itself are caused in 6kV switch gear room circulating water pump comprehensive protector, when completing high low speed running state conversion, protects the automatic switchover of definite value.That is: use the protection of motor first set and differential protection during high-speed cruising, during low cruise, use motor second to overlap protection and Blocking Differential Protection.Guarantee water circulating pump motor safety, reliability service under protection definite value all the time.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model generating set circulation water pump high and low speed switching device.
Main element symbol description:
1, high-speed starting cabinet;
2, low rate start cabinet;
3, high-speed starting high-voltage switch gear;
4, low rate start high-voltage switch gear;
5, the main outlet box of motor;
6, generator neutral point outlet box;
7, the first vacuum contactor;
8, the second vacuum contactor;
9, the 3rd vacuum contactor;
10, incoming line cabinet.
Embodiment
For making the technical problems to be solved in the utility model, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
The utility model switches unstable for existing technology generating set circulation water pump high and low speed switching device ubiquity, the problem that failure rate is high.A kind of generating set circulation water pump high and low speed switching device is provided.
As shown in Figure 1, certain power plant uses 660MW generating set, its generating set circulation water pump high and low speed switching device, comprise high-speed starting cabinet 1, low rate start cabinet 2, high-speed starting high-voltage switch gear 3 is provided with in high-speed starting cabinet 1, low rate start high-voltage switch gear 4 is provided with in low rate start cabinet 2, high-speed starting high-voltage switch gear 3 and low rate start high-voltage switch gear 4 all connect the main outlet box 5 of motor, the first vacuum contactor 7 connecting generator neutral point outlet box 6 is provided with in high-speed starting cabinet 1, the second vacuum contactor 8 connecting generator neutral point outlet box 6 and the 3rd vacuum contactor 9 connecting the main outlet box 5 of motor is provided with in low rate start cabinet 2.
Between high-speed starting high-voltage switch gear 3 and low rate start high-voltage switch gear 4, there is electric locking function.By increasing high, low speed two high-voltage switch gears, there is electric blocking function between two switches, only having disconnection switch could allow another switch that closes, avoid the generation of short trouble.Increase by three contactors at circulating water pump outlet box simultaneously, can complete the conversion of motor star-connection and delta connection, conversion regime adopts two mono-delta connection of Y, and being namely two Y when high speed, is single △ during low speed.By realizing the high low cruise of motor coordinating between contactor with high-voltage switch gear, high low speed switches stable, failure rate is low.
The auxiliary contact of high-speed starting high-voltage switch gear 3 and low rate start high-voltage switch gear 4 connect circulating water pump comprehensive protector.Protect the automatic switchover of definite value when completing high low speed running state conversion, that is: use the protection of motor first set and differential protection during high-speed cruising, use motor second to overlap during low cruise and protect and Blocking Differential Protection.Guarantee water circulating pump motor safety, reliability service under protection definite value all the time.Switch that cabinet provides a secondary high/low speed to run locking contact to circulating water pump comprehensive protector.
High-speed starting cabinet 1 and low rate start cabinet 2 connect power supply by incoming line cabinet 10.
For adapting to actual working environment, this embodiment high speed starts high-voltage switch gear 3 and low rate start high-voltage switch gear 4 adopts 6KV high-voltage switch gear.First vacuum contactor 7, second vacuum contactor 8 and the 3rd vacuum contactor 9 adopt 6KV vacuum contactor.
In such scheme, add high, low speed two high-voltage switch gears, between two switches, have electric blocking function, only have disconnection switch could allow another switch that closes, avoid the generation of short trouble.Increase by three contactors at circulating water pump outlet box simultaneously, the conversion of motor star-connection and delta connection can be completed.By realizing the high low cruise of motor coordinating between contactor with high-voltage switch gear, high low speed switches stable, failure rate is low.The auxiliary contact of high, low speed high-voltage switch gear itself are caused in 6kV switch gear room circulating water pump comprehensive protector, when completing high low speed running state conversion, protects the automatic switchover of definite value.That is: use the protection of motor first set and differential protection during high-speed cruising, during low cruise, use motor second to overlap protection and Blocking Differential Protection.Guarantee water circulating pump motor safety, reliability service under protection definite value all the time.
The above is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from principle described in the utility model; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (6)
1. a generating set circulation water pump high and low speed switching device, comprise high-speed starting cabinet, low rate start cabinet, it is characterized in that, high-speed starting high-voltage switch gear is provided with in described high-speed starting cabinet, low rate start high-voltage switch gear is provided with in described low rate start cabinet, high-speed starting high-voltage switch gear and low rate start high-voltage switch gear all connect the main outlet box of motor, the first vacuum contactor connecting generator neutral point outlet box is provided with in described high-speed starting cabinet, the second vacuum contactor connecting generator neutral point outlet box and the 3rd vacuum contactor connecting the main outlet box of motor is provided with in described low rate start cabinet.
2. generating set circulation water pump high and low speed switching device according to claim 1, is characterized in that, described high-speed starting high-voltage switch gear and low rate start high-voltage switch gear adopt 6KV high-voltage switch gear.
3. generating set circulation water pump high and low speed switching device according to claim 1, is characterized in that having electric locking function between described high-speed starting high-voltage switch gear and low rate start high-voltage switch gear.
4. generating set circulation water pump high and low speed switching device according to claim 1, is characterized in that, the auxiliary contact of described high-speed starting high-voltage switch gear and low rate start high-voltage switch gear connect circulating water pump comprehensive protector.
5. generating set circulation water pump high and low speed switching device according to claim 1, is characterized in that, described first vacuum contactor, the second vacuum contactor and the 3rd vacuum contactor adopt 6KV vacuum contactor.
6. generating set circulation water pump high and low speed switching device according to claim 1, it is characterized in that, described high-speed starting cabinet and low rate start cabinet connect power supply by incoming line cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520333718.2U CN204597825U (en) | 2015-05-21 | 2015-05-21 | Generating set circulation water pump high and low speed switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520333718.2U CN204597825U (en) | 2015-05-21 | 2015-05-21 | Generating set circulation water pump high and low speed switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204597825U true CN204597825U (en) | 2015-08-26 |
Family
ID=53933932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520333718.2U Expired - Fee Related CN204597825U (en) | 2015-05-21 | 2015-05-21 | Generating set circulation water pump high and low speed switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204597825U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108575111A (en) * | 2016-01-07 | 2018-09-25 | 莱宝有限公司 | Vacuum pump controller with star-delta switching |
| CN109104017A (en) * | 2018-09-29 | 2018-12-28 | 东方电气集团东方电机有限公司 | The mode of connection of the single, double star corner connection switching of motor is realized using double outlet boxes |
-
2015
- 2015-05-21 CN CN201520333718.2U patent/CN204597825U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108575111A (en) * | 2016-01-07 | 2018-09-25 | 莱宝有限公司 | Vacuum pump controller with star-delta switching |
| CN109104017A (en) * | 2018-09-29 | 2018-12-28 | 东方电气集团东方电机有限公司 | The mode of connection of the single, double star corner connection switching of motor is realized using double outlet boxes |
| CN109104017B (en) * | 2018-09-29 | 2020-06-02 | 东方电气集团东方电机有限公司 | Wiring method for realizing single-star and double-star angular connection switching of motor by using double outlet boxes |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20210521 |