CN205142056U - Take bypass and dual redundant water pump a soft start control circuit - Google Patents
Take bypass and dual redundant water pump a soft start control circuit Download PDFInfo
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- CN205142056U CN205142056U CN201520817284.3U CN201520817284U CN205142056U CN 205142056 U CN205142056 U CN 205142056U CN 201520817284 U CN201520817284 U CN 201520817284U CN 205142056 U CN205142056 U CN 205142056U
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Abstract
The utility model provides a take bypass and dual redundant water pump a soft start control circuit belongs to change of current valve cooling device control field, including soft starter, soft starter is connected with the power through soft start power air switch QF1, the bypass power air switch QF2 that is connected with the power pass through bypass contactor KM2 and soft starter connects, soft starter and water pump P01 pass through soft start contactor KM1 and connect, soft starter is equipped with bypass export R2A and bypass export R2C. The utility model discloses pick -up current when effectively reducing water pump activation improves the reliability that the soft starter bypass is switched.
Description
Technical field
The utility model relates to converter valve cooling device control field, particularly relates to a kind of water pump SS (soft start) control circuit with bypass and dual redundant.
Background technology
Flexible direct current converter valve is in the process run, and IGBT, electric capacity, resistance etc. the components and parts of its inside can produce a large amount of heats, need cool by high voltage direct current transmission converter valve dedicated cooling system to change of current valve module radiator.State Grid Corporation of China's " QGDW527-2010_ high voltage direct current transmission converter valve cooling system technical specification " requires to propose in main circulation pump technical requirement in 5.2.1.: during motor full voltage starting, starting current can not exceed 6 times of running current at full capacity.Because the usual cooling capacity of converter valve is comparatively large, cause the electrical power needing water pump larger.
For limiting starting current, the mode that need change starting current by soft initiator starts water pump, and need increase reliable bypass soft initiator control loop.If after starting mode of pump reaches power frequency, there is no the loop of bypass soft initiator, or switching bypass loop breaks down, and causes reliably switching, can there is following risk:
1. increase the soft initiator controllable silicon operating time, reduce the life-span;
2. in soft initiator there is loss in controllable silicon self, waste electric energy;
3. soft initiator exports non-sinusoidal waveform pollution electrical network.
Utility model content
The utility model proposes a kind of water pump SS (soft start) control circuit with bypass and dual redundant, effectively reduce starting current during starting mode of pump, improve the reliability of soft initiator bypass changeover.
The technical solution of the utility model is achieved in that
A kind of water pump SS (soft start) control circuit with bypass and dual redundant, comprise soft initiator, described soft initiator is connected with power supply by soft start power supply air switch QF1, the bypass supply air switch QF2 be connected with power supply is connected with described soft initiator by bypass contactor KM2, described soft initiator is connected by soft start contactor KM1 with water pump P 01, and described soft initiator is provided with bypass outlet R2A and bypass outlet R2C.
As preferably, described soft start contactor KM1 and bypass contactor KM2 is controlled by the controller A of two redundancy and controller B, described controller A is connected with described soft start contactor KM1 respectively with after controller B parallel connection, and bypass outlet R2A is with bypass outlet R2C conducting and be connected with described bypass contactor KM2 with after described controller A and controller B parallel connection.
As preferably, between described soft initiator and water pump P 01, be also connected with grounding safety switch QFS1 and water pump P 01 hot protective relay RJ.
As preferably, described soft initiator is also connected with starting relay K01.
Employing the beneficial effects of the utility model are:
1. by soft initiator, effectively reduce starting current during starting mode of pump, soft start bypass functionality effectively reduces soft initiator because of cannot the loss that causes of bypass and generation ofharmonic, extends the useful life of soft initiator.
2. by controller A B dual redundant soft start water pump, make to start more reliable, solve because single control plant failure cannot export the problem of soft start water pump.
3. by controller A B carry out soft initiator bypass changeover in conjunction with the bypass outlet triplex level redundancy of soft initiator self, make bypass functionality more reliable.
Accompanying drawing explanation
Fig. 1 is water pump P 01 bypass soft start power loop schematic diagram;
Fig. 2 is Redundant Control schematic diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, clear, complete explanation is carried out to the utility model.
As shown in Figure 1, the utility model provides a kind of water pump SS (soft start) control circuit with bypass and dual redundant, comprise soft initiator, soft initiator is connected with power supply by soft start power supply air switch QF1, the bypass supply air switch QF2 be connected with power supply is connected with soft initiator by bypass contactor KM2, soft initiator is connected by soft start contactor KM1 with water pump P 01, and soft initiator is provided with bypass outlet R2A and bypass outlet R2C.
Further, soft start contactor KM1 and bypass contactor KM2 is controlled by the controller A of two redundancy and controller B, controller A is connected with soft start contactor KM1 respectively with after controller B parallel connection, and bypass outlet R2A is with bypass outlet R2C conducting and be connected with described bypass contactor KM2 with after described controller A and controller B parallel connection.
Further, grounding safety switch QFS1 and water pump P 01 hot protective relay RJ is also connected with between soft initiator and water pump.
Further, soft initiator is also connected with starting relay K01.
As shown in Figure 2, the water pump SS (soft start) control circuit of bypass and dual redundant is with to control as follows:
(1) when starting water pump P 01, controller A and controller B is in parallel, and be "or" in logic, soft start contactor KM1 closes, and connects " RUN " input of soft initiator through starting relay K01;
(2) after water pump P 01 reaches power frequency operation, soft initiator self detects that self exports and reaches power frequency, bypass outlet R2A and bypass outlet R2C conducting, with controller A, controller B Parallel opertation, form triplex level redundancy, ensure reliability and the redundancy of bypass changeover.
Although the utility model with preferred embodiment openly as above; but it is not for limiting the utility model; any those skilled in the art are not departing from spirit and scope of the present utility model; the Method and Technology content of above-mentioned announcement can be utilized to make possible variation and amendment to technical solutions of the utility model; therefore; every content not departing from technical solutions of the utility model; the any simple modification done above embodiment according to technical spirit of the present utility model, equivalent variations and modification, all belong to the protection range of technical solutions of the utility model.
Claims (4)
1. the water pump SS (soft start) control circuit with bypass and dual redundant, it is characterized in that, comprise soft initiator, described soft initiator is connected with power supply by soft start power supply air switch QF1, the bypass supply air switch QF2 be connected with power supply is connected with described soft initiator by bypass contactor KM2, described soft initiator is connected by soft start contactor KM1 with water pump P 01, and described soft initiator is provided with bypass outlet R2A and bypass outlet R2C.
2. a kind of water pump SS (soft start) control circuit with bypass and dual redundant according to claim 1, it is characterized in that: described soft start contactor KM1 and bypass contactor KM2 is controlled by the controller A of two redundancy and controller B, described controller A is connected with described soft start contactor KM1 respectively with after controller B parallel connection, and bypass outlet R2A is with bypass outlet R2C conducting and be connected with described bypass contactor KM2 with after described controller A and controller B parallel connection.
3. a kind of water pump SS (soft start) control circuit with bypass and dual redundant according to claim 1, is characterized in that: be also connected with grounding safety switch QFS1 and water pump hot protective relay RJ1 between described soft initiator and water pump P 01.
4. a kind of water pump SS (soft start) control circuit with bypass and dual redundant according to claim 1, is characterized in that: described soft initiator is also connected with starting relay K01.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520817284.3U CN205142056U (en) | 2015-10-20 | 2015-10-20 | Take bypass and dual redundant water pump a soft start control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520817284.3U CN205142056U (en) | 2015-10-20 | 2015-10-20 | Take bypass and dual redundant water pump a soft start control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205142056U true CN205142056U (en) | 2016-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520817284.3U Active CN205142056U (en) | 2015-10-20 | 2015-10-20 | Take bypass and dual redundant water pump a soft start control circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN205142056U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109565250A (en) * | 2016-08-04 | 2019-04-02 | 西门子股份公司 | Soft activator, operation method and switching system |
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2015
- 2015-10-20 CN CN201520817284.3U patent/CN205142056U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109565250A (en) * | 2016-08-04 | 2019-04-02 | 西门子股份公司 | Soft activator, operation method and switching system |
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