CN202435290U - Power supply control circuit for high and low pressure thin oil station of coal mill - Google Patents
Power supply control circuit for high and low pressure thin oil station of coal mill Download PDFInfo
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- CN202435290U CN202435290U CN2011205302090U CN201120530209U CN202435290U CN 202435290 U CN202435290 U CN 202435290U CN 2011205302090 U CN2011205302090 U CN 2011205302090U CN 201120530209 U CN201120530209 U CN 201120530209U CN 202435290 U CN202435290 U CN 202435290U
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- power supply
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- contactor
- switching power
- control loop
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Abstract
The utility model discloses a power supply control circuit for a high and low pressure thin oil station of a coal mill, comprising a breaker QF3 and a control loop power indicator HL1, wherein a switching power supply used for transforming AC 220 V voltage into DC 24 V safety voltage is arranged in the control loop; the input end of the switching power supply is connected with the breaker QF3; a high-pressure pump motor control loop and a low-pressure pump motor control loop are arranged between the two output ends of the switching power supply; the high-pressure pump motor control loop comprises a high-pressure pump motor startup button SB1 and a stop button SB2; the startup button SB1 and the stop button SB2 are connected with the coil of a contactor KM1 in series; the button SB1 is connected with the main contact of the contactor KM1 in parallel; the low-pressure pump motor control loop comprises a low-pressure pump motor startup button SB3 and a stop button SB4; the startup button SB3 and the stop button SB4 are connected with the coil of a contactor KM2 in series; the startup button SB3 is connected with the main contact of the contactor KM2 in parallel; and the power indicator is arranged between the two output ends of the switching power supply. The power supply control circuit has the advantages of simple structure, convenience in operation, safety and reliability.
Description
Technical field
The utility model relates to high-low pressure Lubricating-oil Station equipment, relates in particular to a kind of coal pulverizer high-low pressure Lubricating-oil Station power control circuit.
Background technology
The high-low pressure Lubricating-oil Station is mainly used in coal pulverizer bearing lubrication; Be made up of low-lift pump and high pressure pump system, it is AC220V that the control loop of the electrical apparatus control circuit of high-low pressure Lubricating-oil Station adopts voltage, and the control button on the electric cabinet, the voltage of indicator light are AC220V; And AC220V voltage is dangerous voltage to human body; If control button, indicator light leak electricity, particularly electric cabinet, being generally metal material will be charged, will cause danger after the people touching.
Summary of the invention
The purpose of the utility model is exactly the control loop employing AC220V voltage for the high-low pressure Lubricating-oil Station that solves prior art, leaks electricity easily, and the people is caused dangerous problem; A kind of safe coal pulverizer high-low pressure Lubricating-oil Station power control circuit is provided; Has advantage simple in structure, safe and reliable.
To achieve these goals, the utility model adopts following technical scheme:
Coal pulverizer high-low pressure Lubricating-oil Station power control circuit; Comprise circuit breaker Q F3; It is the Switching Power Supply of DC24 safe voltage that control loop power supply indicator HL1, said control circuit are provided with the AC220V voltage transition, and the input of Switching Power Supply connects with circuit breaker Q F3; Parallel high voltage pump motor control loop, low-lift pump motor control loop between two outputs of Switching Power Supply; The high-pressure pump motor control loop comprises high-pressure pump electric motor starting button SB1, stop button SB2, and start button SB1, stop button SB2 connect with contactor KM1 coil, and button SB1 is parallelly connected with contactor KM1 main contact; The low-lift pump motor control loop comprises low-lift pump electric motor starting button SB3, stop button SB4, and start button SB3, stop button SB4 connect with contactor KM2 coil, and start button SB3 is parallelly connected with contactor KM2 main contact.
Indicator light is connected in parallel between Switching Power Supply two outputs.
Said Switching Power Supply is a SDA-150-24 type Switching Power Supply.
The operation principle of the utility model: through the Switching Power Supply of voltage transitions is set on control circuit; The input termination AC220V power supply of Switching Power Supply; Through the transformation of Switching Power Supply, be that DC24V direct current safe voltage is exported at output with the AC220V voltage transitions, button, indicator light are connected with DC24 safe voltage circuit; Operating personnel are action button and switch safely, realizes the operation control to the main circuit motor.
The beneficial effect of the utility model: after the utility model was the DC24 safe voltage with the AC220V voltage transition, button, indicator light were connected with DC24V safe voltage circuit, had avoided generation of electric leakage accident and human body to damage; And it is simple in structure; Easy to use, safe and reliable, cost is low.
Description of drawings
Fig. 1 is the control circuit sketch map of the utility model;
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Coal pulverizer high-low pressure Lubricating-oil Station power control circuit; As shown in the figure; Control circuit is provided with pushbutton enable button SB1, stop button SB2, indicator light HL1; It is the Switching Power Supply of DC24 safe voltage that said control circuit is provided with the AC220V voltage transition; Switching Power Supply connects with circuit breaker Q F3, and start button SB1 connects with the coil of the contactor KM1 of Switching Power Supply output, parallelly connected with the auxiliary contact of contactor KM1, and start button SB3 connects with the coil of the contactor KM2 of Switching Power Supply output, parallelly connected with the auxiliary contact SB4 of contactor KM2.Contactor KM1 is connected between the high-pressure pump circuit breaker Q F1 and thermal relay FR1 of main circuit; Contactor KM2 is connected between the low-lift pump circuit breaker Q F2 contactor KM2 thermal relay FR2 of main circuit; Through the Switching Power Supply of voltage transitions is set on control circuit; The input termination AC220V power supply of Switching Power Supply through the transformation of Switching Power Supply, is that DC24V direct current safe voltage is exported at output with the AC220V voltage transitions; Button, indicator light are connected with DC24 safe voltage circuit, realize the operation control to the main circuit motor.During work, the circuit breaker that before driving motor, closes is earlier pressed start button then, as: in the time of starting high-pressure pump motor M 1; The circuit breaker Q of at first closing F, QF1, QF2, QF3 press start button SB1 then, and contactor coil KM1 gets electric, and contactor KM1 main contact is closed; The high-pressure pump motor rotation, contactor auxiliary contact KM1 is closed simultaneously, with button SB1 short circuit; If the high-pressure pump motor is stopped, press stop button SB2, the high-pressure pump motor shuts down.When starting low-lift pump motor M 2, press start button SB3, contactor coil KM2 gets; Contactor KM2 main contact is closed, the low-lift pump motor rotation, and contactor auxiliary contact KM2 is closed simultaneously; With start button SB3 short circuit; If the low-lift pump motor is stopped, press stop button SB4, the low-lift pump motor shuts down.
Though the above-mentioned accompanying drawing that combines is described the embodiment of utility model; But be not restriction to the utility model protection range; One of ordinary skill in the art should be understood that; On the basis of the technical scheme of the utility model, those skilled in the art need not pay various modifications that creative work can make or distortion still in the protection range of the utility model.
Claims (3)
1. coal pulverizer high-low pressure Lubricating-oil Station power control circuit; Comprise circuit breaker Q F3, control loop power supply indicator HL1 is characterized in that; It is the Switching Power Supply of DC24 safe voltage that control circuit is provided with the AC220V voltage transition; The input of Switching Power Supply connects with circuit breaker Q F3, is provided with high-pressure pump motor control loop, low-lift pump motor control loop between two outputs of Switching Power Supply, and the high-pressure pump motor control loop comprises high-pressure pump electric motor starting button SB1, stop button SB2; Start button SB1, stop button SB2 connect with contactor KM1 coil, and button SB1 is parallelly connected with contactor KM1 main contact; The low-lift pump motor control loop comprises low-lift pump electric motor starting button SB3, stop button SB4, and start button SB3, stop button SB4 connect with contactor KM2 coil, and start button SB3 is parallelly connected with contactor KM2 main contact.
2. coal pulverizer high-low pressure Lubricating-oil Station power control circuit as claimed in claim 1 is characterized in that said Switching Power Supply is a SDA-150-24 type Switching Power Supply.
3. coal pulverizer high-low pressure Lubricating-oil Station power control circuit as claimed in claim 1 is characterized in that said indicator light is connected in parallel between Switching Power Supply two outputs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205302090U CN202435290U (en) | 2011-12-16 | 2011-12-16 | Power supply control circuit for high and low pressure thin oil station of coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205302090U CN202435290U (en) | 2011-12-16 | 2011-12-16 | Power supply control circuit for high and low pressure thin oil station of coal mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202435290U true CN202435290U (en) | 2012-09-12 |
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ID=46784698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205302090U Expired - Fee Related CN202435290U (en) | 2011-12-16 | 2011-12-16 | Power supply control circuit for high and low pressure thin oil station of coal mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202435290U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878415A (en) * | 2012-10-11 | 2013-01-16 | 大唐黄岛发电有限责任公司 | Improved fan oil station electrical control system |
-
2011
- 2011-12-16 CN CN2011205302090U patent/CN202435290U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878415A (en) * | 2012-10-11 | 2013-01-16 | 大唐黄岛发电有限责任公司 | Improved fan oil station electrical control system |
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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 |
Granted publication date: 20120912 Termination date: 20161216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |