CN220234184U - Optimized structure of fan oil station power supply loop - Google Patents
Optimized structure of fan oil station power supply loop Download PDFInfo
- Publication number
- CN220234184U CN220234184U CN202321442071.8U CN202321442071U CN220234184U CN 220234184 U CN220234184 U CN 220234184U CN 202321442071 U CN202321442071 U CN 202321442071U CN 220234184 U CN220234184 U CN 220234184U
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- power supply
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- oil station
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- 230000001012 protector Effects 0.000 claims abstract description 10
- 238000005457 optimization Methods 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 claims description 43
- 239000010724 circulating oil Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000002407 reforming Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- Control Of Multiple Motors (AREA)
Abstract
An optimized structure of a fan oil station power supply loop. The induced draft fan oil station is an important component part of a fan, the safety of a control loop is improved, the power supply of the induced draft fan oil station is designed to be two paths at present, but when the first path of power supply is in a phase failure state, a contactor is not tripped, the second path of standby power supply is not put into operation, the oil pump motor trips due to the power phase failure, and the oil pressure reduces the tripping of the induced draft fan. An optimization structure of a fan oil station power supply loop, which comprises the following components: the induced draft fan oil station power supply (1) is respectively connected with a 400V security PC A section and a 400V security PC B section, and phase interruption protectors (2) are connected on lines of L1, L2 and L3 on the 400V security PC A section and the 400V security PC B section and are arranged in the control cabinet; 380V contactors (3) are connected with the lines on L1 and L3 on the 400V security PC A section and the 400V security PC B section, and the switching control power supply is taken from the phase A and the phase C.
Description
Technical Field
The utility model relates to an optimized structure of a fan oil station power supply loop.
Background
The induced draft fan is an important auxiliary equipment of the power plant boiler, and the stable operation of the induced draft fan is directly related to the safe and reliable operation level of the unit. The induced draft fan oil station is an important component of the fan, and the safety and reliability of a control loop are very critical. At present, the power supply of the induced draft fan oil station is designed into two paths, the first path is led from a 400V security PC A section, the second path is led from a 400V security PC B section, the two paths of power supplies are switched into auxiliary contact points of the contactors, and when the first path of power-losing contactors in operation return to be connected with the second path of contactors in a connecting mode, the second path of standby power supply is put into operation, so that the normal operation of an oil pump is ensured. However, when the first power supply is in phase failure, the contactor is not tripped, the second standby power supply is not put into operation, and the oil pump motor trips due to the phase failure of the power supply, so that the oil pressure is reduced, and the induced draft fan trips.
Disclosure of Invention
The utility model aims to provide an optimized structure of a fan oil station power supply loop.
The above object is achieved by the following technical scheme:
an optimization structure of a fan oil station power supply loop, which comprises the following components: the induced draft fan oil station power supply is respectively connected with a 400V security PC A section and a 400V security PC B section, the lines of L1, L2 and L3 on the 400V security PC A section and the 400V security PC B section are connected with phase failure protectors, and the phase failure protectors are arranged in a control cabinet;
the circuit on the L1 and the L3 of the 400V security PC section A and the 400V security PC section B is connected with a 380V contactor, and the switching control power supply is taken from the phase A and the phase C.
The optimized structure of the fan oil station power supply loop is characterized in that A phase, B phase and C phase of the fan oil station power supply are connected with a breaker and a breaker control switch.
The optimized structure of fan oil station power supply loop, fan oil station power A phase, B phase and C phase be connected with electric heater, circulating oil pump motor, no. 1 oil pump motor and No. 2 oil pump motor.
The utility model has the beneficial effects that:
1. the utility model ensures that the oil pump motor does not trip when the first path of power supply of the induced draft fan oil station is in phase failure, improves the reliability of equipment, and lays a foundation for long-term stable operation of the unit.
2. The utility model installs the phase failure protector on the local control cabinet, the action result of the phase failure protector is alarm, the alarm is connected with DCS, the operation personnel monitor panel finds out the alarm to inform maintenance personnel of the vertical checking treatment, the switching contactor is replaced by 380V control, the switching control power supply is taken from A, C phase, and the power supply switching can be realized when A, C phase failure occurs.
Drawings
Fig. 1 is a schematic diagram of the structure of the present utility model.
In the figure: 1. the induced draft fan oil station power supply, 2, open-phase protector, 3, 380V contactor, 4, the circuit breaker, 5, circuit breaker control switch, 6, electric heater, 7, circulation oil pump motor, 8, 1 number oil pump motor, 9, no. 2 oil pump motor.
Detailed Description
Examples
An optimization structure of a fan oil station power supply loop, which comprises the following components: the oil station power supply 1 of the induced draft fan, the said oil station power supply of the said induced draft fan connects with 400V security PC A section and 400V security PC B section separately, the said 400V security PC A section and said 400V security PC B section are connected with the open-phase protector 2 on the circuit of L1, L2 and L3, the said open-phase protector is installed in control cabinet;
the circuit on the L1 and the L3 of the 400V security PC section A and the 400V security PC section B is connected with a 380V contactor 3, and the switching control power supply is taken from the phase A and the phase C.
The optimized structure of the fan oil station power supply loop is characterized in that A phase, B phase and C phase of the fan oil station power supply are connected with a breaker 4 and a breaker control switch 5.
The optimized structure of the fan oil station power supply loop is characterized in that an A phase, a B phase and a C phase of the fan oil station power supply are connected with an electric heater 6, a circulating oil pump motor 7, a No. 1 oil pump motor 8 and a No. 2 oil pump motor 9.
After optimization transformation, when the phase failure condition occurs in the first path of power failure of operation, maintenance personnel can be timely warned and informed to carry out inspection treatment, the shutdown of an oil station can not be caused, the second path of power supply is timely put into operation to ensure the normal operation of the fan oil station, the optimization transformation is ensured to greatly improve the reliability and the adaptability of the equipment under the background of increasingly strict requirements on electric equipment, the normal operation capability of the fan oil station is ensured, and the hidden danger of the equipment is eliminated. From the economical point of view, the cost of optimizing and reforming is extremely low, but the loss caused by primary equipment failure is extremely heavy compared with the power grid check, and the economical efficiency and the necessity of optimizing and reforming are self-evident.
Claims (3)
1. An optimization structure of a fan oil station power supply loop, which comprises the following components: the induced draft fan oil station power, induced draft fan oil station power be connected with 400V security PC A section and 400V security PC B section respectively, characterized by: the circuit of the L1, L2 and L3 on the 400V security PC section A and the 400V security PC section B are connected with a phase failure protector, and the phase failure protector is arranged in a control cabinet;
the circuit on the L1 and the L3 of the 400V security PC section A and the 400V security PC section B is connected with a 380V contactor, and the switching control power supply is taken from the phase A and the phase C.
2. The optimization structure of a fan oil station power supply loop according to claim 1, characterized in that: the phase A, the phase B and the phase C of the induced draft fan oil station power supply are connected with a breaker and a breaker control switch.
3. The optimization structure of a fan oil station power supply loop according to claim 2, characterized in that: and the induced draft fan oil station power supply A phase, B phase and C phase are connected with the electric heater, the circulating oil pump motor, the No. 1 oil pump motor and the No. 2 oil pump motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321442071.8U CN220234184U (en) | 2023-06-08 | 2023-06-08 | Optimized structure of fan oil station power supply loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321442071.8U CN220234184U (en) | 2023-06-08 | 2023-06-08 | Optimized structure of fan oil station power supply loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220234184U true CN220234184U (en) | 2023-12-22 |
Family
ID=89182319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321442071.8U Active CN220234184U (en) | 2023-06-08 | 2023-06-08 | Optimized structure of fan oil station power supply loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220234184U (en) |
-
2023
- 2023-06-08 CN CN202321442071.8U patent/CN220234184U/en active Active
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