CN203251066U - Cigarette maker unit paper cutting drum heating circuit protective device - Google Patents
Cigarette maker unit paper cutting drum heating circuit protective device Download PDFInfo
- Publication number
- CN203251066U CN203251066U CN2013201517942U CN201320151794U CN203251066U CN 203251066 U CN203251066 U CN 203251066U CN 2013201517942 U CN2013201517942 U CN 2013201517942U CN 201320151794 U CN201320151794 U CN 201320151794U CN 203251066 U CN203251066 U CN 203251066U
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- cutting drum
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Abstract
The utility model discloses a cigarette maker unit paper cutting drum heating circuit protective device comprising a PLC and a solid-state relay; the solid-state relay and a paper cutting drum heating body are connected in series on a power circuit; a signal input terminal of the solid-state relay is connected with a signal output terminal of the PLC; the heating circuit protective device also comprises a first relay and a second relay; a first relay coil is connected with the solid-state relay in parallel; a normal-open contact point of the first relay is connected in series on a PLC signal input circuit; the signal output terminal of the PLC is connected with a second relay coil through a relay drive circuit; and second relay normal-close contact point, the solid-state relay and the paper cutting drum heating body are connected in series on the power circuit. The cigarette maker unit paper cutting drum heating circuit protective device employs the first relay to collect state signals of the solid-state relay, simultaneously employs the second relay to control on/off of the power of the paper cutting drum heating body, is simple in structure and easy to realize, can prevent paper cutting drum burning and power control cabinet fire hazard phenomenon caused by short circuit of the solid-state relay, and can ensure safety production of a company.
Description
Technical field
The utility model relates to a kind of heater circuit protective device, relates in particular to a kind of cigarette unit cutting drum heater circuit protective device.
Background technology
At present, as shown in Figure 1, the ZJ15G cigarette unit cutting drum calandria that uses in the tobacco manufacturing enterprise is by PLC and solid-state relay control.ZJ15G cigarette unit cutting drum calandria and solid-state relay are connected on the power circuit, and the signal input part of solid-state relay connects the signal output part of PLC.Because the heating power of ZJ15G cigarette unit cutting drum calandria is larger, the maximum current of circuit can reach 30A during heating, and solid-state relay is easy to be subject to the impact of switching current and cause the solid-state relay load end breakdown, causes short circuit.In case short circuit appears in solid-state relay, will cause two kinds of consequences: the one, solid-state relay can't in time disconnect cutting drum calandria power circuit, causes cutting drum calandria continuous heating finally to cause cutting drum to burn out, and causes serious economic loss; The 2nd, solid-state relay is moulded shell and is melted burning, causes appliance fire in electrical control cubicles, causes serious production accident and casualties.
The utility model content
The purpose of this utility model provides a kind of cigarette unit cutting drum heater circuit protective device; can after appearring in solid-state relay, short circuit in time disconnect cutting drum calandria power circuit; stop to burn out and the electrical control cubicles fire phenomena because of the cutting drum that the solid-state relay short circuit causes; guarantee enterprise safety operation, reduce potential safety hazard.
The utility model adopts following technical proposals:
A kind of cigarette unit cutting drum heater circuit protective device; comprise PLC and solid-state relay; solid-state relay and cutting drum calandria are connected on the power circuit; the signal input part of solid-state relay connects the signal output part of PLC; comprise the first relay and the second relay; the first relay coil is in parallel with solid-state relay; the first relay normally open contact is connected on the PLC signal input circuit; the signal output part of PLC connects the second relay coil by relay drive circuit, the second relay normally-closed contact and solid-state relay; the cutting drum calandria is connected on the power circuit.
The PLC signal input circuit of described the first relay normally open contact series connection adopts the voltage of 24V.
The utility model utilizes the first relay to gather the solid-state relay status signal, utilize simultaneously the second relay that cutting drum calandria power on/off is controlled, simple in structure, be easy to realize, can after appearring in solid-state relay, short circuit in time disconnect cutting drum calandria power circuit, stop to burn out and the electrical control cubicles fire phenomena because of the cutting drum that the solid-state relay short circuit causes, guarantee enterprise safety operation, reduce potential safety hazard.
Description of drawings
Fig. 1 is existing cigarette unit cutting drum heater circuit schematic diagram;
Fig. 2 is circuit diagram of the present utility model.
Embodiment
As shown in Figure 2, the utility model comprises PLC, solid-state relay, the first relay and the second relay, solid-state relay, cutting drum calandria and the second relay normally-closed contact are connected on the power circuit, the first relay coil is in parallel with solid-state relay, the signal input part of solid-state relay connects the signal output part of PLC, the first relay normally open contact is connected on the PLC signal input circuit, and the signal output part of PLC connects the second relay coil by relay drive circuit.The PLC signal input circuit of described the first relay normally open contact series connection adopts the voltage of 24V.
The utility model in use, when PLC control solid-state relay was in the normally state, because the two ends potential difference of solid-state relay is 0V, the first relay coil no current passed through, the first relay normally open contact on the PLC signal input circuit disconnects, the input of PLC no signal; This moment, PLC judged, if the solid-state relay control signal of PLC output then belongs to normal condition also for conducting.When PLC control solid-state relay is in normal off-state, there is potential difference in the two ends of solid-state relay, and the first relay coil gets electric work, and the first relay normally open contact on the PLC signal input circuit is closed, PLC has the signal input, then belongs to normal condition; When solid-state relay causes short circuit owing to the impact of switching current is breakdown, the two ends potential difference of solid-state relay is 0V, the first relay coil no current passes through, the first relay normally open contact on the PLC signal input circuit disconnects, the input of PLC no signal, this moment, PLC judged, if the solid-state relay control signal of PLC output is for disconnecting, and the PLC no signal surpasses after 3 seconds input time, then PLC judges that breakdown phenomenon appears in solid-state relay, PLC output this moment control signal, make the second relay coil get electric work by relay drive circuit, the second relay normally-closed contact disconnects, and the outage of cutting drum calandria finishes heated condition, can stop to burn out and the electrical control cubicles fire phenomena because of the cutting drum that the solid-state relay short circuit causes.
Claims (2)
1. cigarette unit cutting drum heater circuit protective device; comprise PLC and solid-state relay; solid-state relay and cutting drum calandria are connected on the power circuit; the signal input part of solid-state relay connects the signal output part of PLC; it is characterized in that: comprise the first relay and the second relay; the first relay coil is in parallel with solid-state relay; the first relay normally open contact is connected on the PLC signal input circuit; the signal output part of PLC connects the second relay coil by relay drive circuit, the second relay normally-closed contact and solid-state relay; the cutting drum calandria is connected on the power circuit.
2. cigarette unit cutting drum heater circuit protective device according to claim 1 is characterized in that: the voltage of the PLC signal input circuit employing 24V of described the first relay normally open contact series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201517942U CN203251066U (en) | 2013-03-29 | 2013-03-29 | Cigarette maker unit paper cutting drum heating circuit protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201517942U CN203251066U (en) | 2013-03-29 | 2013-03-29 | Cigarette maker unit paper cutting drum heating circuit protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203251066U true CN203251066U (en) | 2013-10-23 |
Family
ID=49377484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201517942U Expired - Lifetime CN203251066U (en) | 2013-03-29 | 2013-03-29 | Cigarette maker unit paper cutting drum heating circuit protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203251066U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410883A (en) * | 2015-07-30 | 2017-02-15 | 富士电机株式会社 | charging control system, power conversion system, charging control device and power conversion device |
-
2013
- 2013-03-29 CN CN2013201517942U patent/CN203251066U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410883A (en) * | 2015-07-30 | 2017-02-15 | 富士电机株式会社 | charging control system, power conversion system, charging control device and power conversion device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 450000 Yulin South Road, Henan, Zheng Dong, No. 16 South Road, Zhengzhou Patentee after: CHINA TOBACCO HENAN INDUSTRIAL Co.,Ltd. Address before: 450000 Zhengzhou agricultural road, Henan, No. 29 Patentee before: CHINA TOBACCO HENAN INDUSTRIAL Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131023 |