CN212726563U - Commercial power oil engine switching device - Google Patents
Commercial power oil engine switching device Download PDFInfo
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- CN212726563U CN212726563U CN202020720780.8U CN202020720780U CN212726563U CN 212726563 U CN212726563 U CN 212726563U CN 202020720780 U CN202020720780 U CN 202020720780U CN 212726563 U CN212726563 U CN 212726563U
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- oil engine
- commercial power
- circuit breaker
- programmable logic
- logic controller
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Abstract
The utility model discloses a commercial power oil engine switching device, wherein a commercial power breaker and an oil engine breaker are respectively connected into a commercial power supply and an oil engine power supply, and auxiliary normally open contacts of the commercial power breaker and the oil engine breaker are used as state feedback signals of each switch to be sent to a programmable logic controller; the commercial power voltage relay and the oil engine voltage relay are respectively connected with the upper end heads of the commercial power circuit breaker and the oil engine circuit breaker for voltage monitoring, voltage signal contacts of the commercial power voltage relay and the oil engine voltage relay are connected with a digital input port of the programmable logic controller, and a digital output port of the programmable logic controller is connected with the oil engine to serve as an oil engine starting and stopping signal. The beneficial effects of the utility model reside in that, the electric switch has realized automatic switching, and the commercial power loses the electricity and starts the oil machine, and the commercial power resumes the function of shutting down the oil machine, effective reduce cost when guaranteeing the performance. The digital quantity port of the programmable logic controller can be flexibly expanded to meet higher requirements.
Description
Technical Field
The utility model relates to a commercial power oil machine switching device.
Background
In some key departments with high power supply requirements, such as communication, medicine and power generation, a diesel generator is a common standby power supply, and the conventional market applies a dual-power automatic transfer switch to switch the power supply of a commercial oil engine. The dual-power automatic transfer switch is high in cost, and when the application needs to be expanded, such as a dual-oil engine standby, the dual-power automatic transfer switch does not have the expansion capability as a basic unit.
Disclosure of Invention
In order to solve the problem, the utility model provides a commercial power oil machine switching device, effective reduce cost, and have the ability of nimble extension.
In order to achieve the purpose of the invention, the utility model adopts the following technical scheme:
a commercial power oil engine switching device comprises a programmable logic controller, a commercial power circuit breaker, an oil engine circuit breaker, a commercial power voltage relay and an oil engine voltage relay, wherein the commercial power circuit breaker and the oil engine circuit breaker are respectively connected with the programmable logic controller; the commercial power circuit breaker and the oil engine circuit breaker are respectively connected to a commercial power supply and an oil engine power supply, and the auxiliary normally open contacts of the commercial power circuit breaker and the oil engine circuit breaker serve as state feedback signals of each switch and are sent to the programmable logic controller; the commercial power voltage relay and the oil engine voltage relay are respectively connected with the upper end heads of the commercial power circuit breaker and the oil engine circuit breaker for voltage monitoring, voltage signal contacts of the commercial power voltage relay and the oil engine voltage relay are connected with a digital input port of the programmable logic controller, and a digital output port of the programmable logic controller is connected with the oil engine to serve as an oil engine starting and stopping signal.
As a preferred scheme, when a mains supply voltage relay monitors that a mains supply is switched in, a programmable logic controller automatically switches on and off, and a mains supply circuit breaker is firstly switched on; after the commercial power is lost for 10s, the programmable logic controller firstly divides the commercial power circuit breaker, then the oil engine is started, the oil engine voltage relay monitors the power supply input of the oil engine, the programmable logic controller automatically switches, and the oil engine circuit breaker is switched on; and (3) recovering the mains supply, wherein the mains supply voltage relay monitors the input of the mains supply, and after 10s, the programmable logic controller shuts down the oil engine firstly, then closes the oil engine circuit breaker and finally closes the mains supply circuit breaker.
Preferably, the programmable logic controller transmits the field data to an upper computer for processing so as to monitor and store the data.
The beneficial effects of the utility model reside in that, the electric switch has realized automatic switching, and the commercial power loses the electricity and starts the oil machine, and the commercial power resumes the function of shutting down the oil machine, effective reduce cost when guaranteeing the performance. The digital quantity port of the programmable logic controller can be flexibly expanded to meet higher requirements.
Drawings
Fig. 1 is a schematic block diagram of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, the utility model discloses a commercial power oil engine switching device 100, including programmable logic controller 101, and commercial power circuit breaker 102, oil engine circuit breaker 103, commercial power voltage relay 104, oil engine voltage relay 105 of connecting respectively the programmable logic controller; the commercial power circuit breaker 102 and the oil engine circuit breaker 103 are respectively connected to a commercial power supply and an oil engine power supply, and the auxiliary normally open contacts of the commercial power circuit breaker 102 and the oil engine circuit breaker 103 serve as state feedback signals of each switch and are sent to the programmable logic controller 101; the utility voltage relay 104 and the oil engine voltage relay 105 are respectively connected with the upper ends of the utility circuit breaker 102 and the oil engine circuit breaker 103 for voltage monitoring, voltage signal contacts of the utility voltage relay 104 and the oil engine voltage relay 105 are connected with a digital input port of the programmable logic controller 101, and the digital output port of the programmable logic controller 101 is connected with the engine oil as an oil engine start-stop signal.
In an embodiment of the present invention, when the mains voltage relay 104 monitors the mains power supply input, the programmable logic controller 101 automatically switches on and off, and the mains circuit breaker 102 is first closed; after the commercial power is lost for 10 seconds, the programmable logic controller 101 firstly divides the commercial power circuit breaker 102, then the oil engine is started, the oil engine voltage relay 105 monitors the input of the oil engine power supply, the programmable logic controller 101 automatically switches, and the oil engine circuit breaker 103 is switched on; and when the mains supply is recovered, the mains supply voltage relay 104 monitors the input of the mains supply, after 10s, the programmable logic controller 101 shuts down the oil engine firstly, then the oil engine breaker 103 is separated, and finally the mains supply breaker 102 is closed, so that the functions of automatically switching, starting the oil engine when the mains supply is power-off and shutting down the oil engine are realized.
Furthermore, the programmable logic controller 101 can also be used as a communication manager to transmit the important data of the site to the upper computer of the central control room for processing, so as to facilitate monitoring and data storage.
In summary, the above description is only a preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention should be included within the scope of the present invention.
Claims (2)
1. A commercial power oil engine switching device is characterized by comprising a programmable logic controller, a commercial power circuit breaker, an oil engine circuit breaker, a commercial power voltage relay and an oil engine voltage relay, wherein the commercial power circuit breaker and the oil engine circuit breaker are respectively connected with the programmable logic controller; the commercial power circuit breaker and the oil engine circuit breaker are respectively connected to a commercial power supply and an oil engine power supply, and the auxiliary normally open contacts of the commercial power circuit breaker and the oil engine circuit breaker serve as state feedback signals of each switch and are sent to the programmable logic controller; the utility voltage relay and the oil engine voltage relay are respectively connected with the upper ends of the utility circuit breaker and the oil engine circuit breaker for voltage monitoring, voltage signal contacts of the utility voltage relay and the oil engine voltage relay are connected with a digital input port of the programmable logic controller, and the digital output port of the programmable logic controller is connected with an oil engine to be used as an oil engine start-stop signal.
2. The commercial fuel engine switching device according to claim 1, wherein the programmable logic controller transmits field data to an upper computer for processing, so as to monitor and store the data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020720780.8U CN212726563U (en) | 2020-05-06 | 2020-05-06 | Commercial power oil engine switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020720780.8U CN212726563U (en) | 2020-05-06 | 2020-05-06 | Commercial power oil engine switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212726563U true CN212726563U (en) | 2021-03-16 |
Family
ID=74944488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020720780.8U Active CN212726563U (en) | 2020-05-06 | 2020-05-06 | Commercial power oil engine switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212726563U (en) |
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2020
- 2020-05-06 CN CN202020720780.8U patent/CN212726563U/en active Active
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