CN102678593A - Control system for furnace cap fan of bell type furnace - Google Patents
Control system for furnace cap fan of bell type furnace Download PDFInfo
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- CN102678593A CN102678593A CN2012101359366A CN201210135936A CN102678593A CN 102678593 A CN102678593 A CN 102678593A CN 2012101359366 A CN2012101359366 A CN 2012101359366A CN 201210135936 A CN201210135936 A CN 201210135936A CN 102678593 A CN102678593 A CN 102678593A
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Abstract
The invention discloses a control system for a furnace cap fan of a bell type furnace. The control system comprises a motor control center (MCC) cabinet, a programmable logic controller (PLC) cabinet, a socket box, a cooling cap fan overload protection box and a heating cap fan overload protection box, wherein a socket is arranged in the socket box and comprises a socket power terminal and a socket control terminal, the MCC cabinet is connected with the PLC cabinet, the socket power terminal and the socket control terminal respectively, the cooling cap fan overload protection box is provided with a first plug, the heating cap fan overload protection box is provided with a second plug, and the first plug and the second plug can be inserted into the socket of the socket box. According to the control system for the furnace cap fan of the bell type furnace, an electrical control system is enabled to be simple in design, the utilization rate of electrical equipment is improved, the construction and maintenance are easy through reasonable allocation of resources, and the engineering cost is saved.
Description
Technical field
The present invention relates to the cold-strip steel heat treatment industry in the metallurgy, relate in particular to a kind of bell-type furnace bonnet blower fan control system.
Background technique
In the processing technological flow of bell-type furnace; Each table at first is to use heating mantle that coil of strip is heat-treated; Through after the heat treatment process of certain hour; Re-use cooling cover coil of strip is carried out cooling processing, on the general heating mantle combustion fan is set, two cooling blowers are set on the cooling cover also work simultaneously.
At present, what low-voltage electrical control system majority adopted is conventional design method, a corresponding power major loop of motor and a control loop.If adopt conventional design method can have following problem: the one, need the corresponding heating mantle and the power loop and the control loop of cooling cover be set for every table; And in use; Heating mantle and cooling cover are can on same seat table, not use simultaneously; Thereby caused the electrical equipment utilization ratio in MCC (Motor Control Center, the motor control center) cabinet low; The 2nd, the signal of each control loop all need enter PLC (Programmable logic Controller, programmable logic controller (PLC)) system, has increased the difficulty of investment of PLC system hardware and software programming; The 3rd, adopt man-to-man power supply and control mode, cause cable various, be not easy to construction and maintenance, and increased engineering cost.
Summary of the invention
The technical problem that the present invention will solve has provided a kind of electric control system simplicity of design, can reduce the hardware investment of MCC cabinet and PLC system, the utilization ratio of raising electrical equipment, can reduce the bell-type furnace bonnet blower fan control system of PLC software programming difficulty.
In order to solve the problems of the technologies described above; The invention provides a kind of bell-type furnace bonnet blower fan control system, this system includes MCC cabinet, PLC cabinet, socket case, cooling cover blower fan overload protection case and heating mantle blower fan overload protection case, is provided with socket in the said socket case; Said socket comprises socket power terminal and socket control terminal; Said MCC cabinet is connected with the PLC cabinet, and said MCC cabinet also is connected with the socket control terminal with socket power terminal respectively, and said cooling blower overload protection case is provided with first plug; Said heating mantle blower fan overload protection case is provided with second plug, and said first plug and second plug all can insert in the socket of socket case.
Further; Include major loop in the said MCC cabinet; Said major loop comprises major loop circuit breaker and major loop contactor; The main contact serial connection of said major loop circuit breaker and major loop contactor, the end of incoming cables of said major loop circuit breaker connects the main circuit power supply busbar, and the outlet terminal of said major loop contactor is connected with socket power terminal.
Further; Said MCC cabinet also includes control loop; Said control loop comprises control loop circuit breaker, auxiliary reclay and major loop contactor control coil, and the end of incoming cables of said control loop circuit breaker connects control loop power supply busbar, and said auxiliary reclay is connected with major loop contactor control coil; Said major loop contactor control coil is connected with the PLC cabinet, the break-make of said major loop contactor control coil control major loop contactor.
Further, said first plug and second plug are provided with power terminal and control terminal.
Further; Include the cooling blower overload protection thermorelay and first auxiliary contact in the said cooling cover blower fan overload protection case; Said cooling blower overload protection thermorelay is connected with the power terminal of first plug, and said first auxiliary contact are connected with the control terminal of first plug.
Further, said cooling blower overload protection thermorelay is at least two.
Further, said cooling blower overload protection thermorelay is two, and two said cooling blower overload protection thermorelays are to be connected in parallel, and two said cooling blower overload protection thermorelays are connected in series a cooling blower respectively.
Further; Include the combustion fan overload protection thermorelay and second auxiliary contact in the said heating mantle blower fan overload protection case; Said combustion fan overload protection thermorelay is connected with the power terminal of second plug; Said second auxiliary contact are connected with the control terminal of second plug, and the outlet terminal of said combustion fan overload protection thermorelay connects combustion fan.
The invention enables the electric control system simplicity of design; Reduce the hardware investment of MCC cabinet and PLC system, improved the utilization ratio of electrical equipment, reduced the difficulty of PLC software programming; And through the reasonable resources configuration; Can reduce the cable amount, and be easy to construction and maintenance, save engineering cost.
Description of drawings
Fig. 1 is bell-type furnace bonnet blower fan control system one an embodiment's of the present invention structural representation;
Fig. 2 is the MCC cabinet electrical schematic diagram of one embodiment of the invention;
Fig. 3 is the control loop of one embodiment of the invention;
Fig. 4 is the cooling cover blower fan overload protection electrical schematic diagram of one embodiment of the invention;
Fig. 5 is the heating mantle blower fan overload protection electrical schematic diagram of one embodiment of the invention;
Fig. 6 is the PLC electrical schematic diagram of one embodiment of the invention.
Among the figure, 1. MCC cabinet, 2. PLC cabinet, 3. socket case, 4. socket; 5. first plug, 6. second plug, 7. cooling cover blower fan overload protection case, 8. heating mantle blower fan overload protection case, 9. cooling blower; 10. combustion fan, 11. main circuit power supply busbars, 12. major loop circuit breakers, 13. major loop contactors, 14. cooling blower overload protection thermorelays; 15. first auxiliary contact, 16. combustion fan overload protection thermorelays, 17. second auxiliary contact, 18. socket power terminals, 19. socket control terminals; 20. the control loop circuit breaker, 21. auxiliary reclays, 22. major loop contactor control coils, 23. control loops power supply busbar; 24. the power terminal of first plug, the control terminal of 25. first plugs, the power terminal of 26. second plugs, the control terminal of 27. second plugs.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is described further so that those skilled in the art can better understand the present invention and implementing, but the embodiment that lifts not conduct to qualification of the present invention.
As shown in Figure 1; Bell-type furnace bonnet blower fan control system one embodiment of the present invention; This system includes MCC cabinet 1, PLC cabinet 2, socket case 3, cooling cover blower fan overload protection case 7 and heating mantle blower fan overload protection case 8; Be provided with socket 4 in the said socket case 3, said socket 4 comprises socket power terminal 18 and socket control terminal 19, and said MCC cabinet 1 also is connected with PLC cabinet 2; Said MCC cabinet also is connected with socket control terminal 19 with socket power terminal 18 respectively; Said cooling blower overload protection case 7 is provided with first plug 5, and said heating mantle blower fan overload protection case is provided with second plug 6, and said first plug 5 and second plug 6 all can insert in the socket 4 of socket case 3.
Said first plug 5 and second plug 6 are provided with power terminal and control terminal.
As shown in Figure 2; Include major loop in the said MCC cabinet 1; Said major loop comprises major loop circuit breaker 12 and major loop contactor 13; The main contact serial connection of said major loop circuit breaker 12 and major loop contactor 13, the end of incoming cables of said major loop circuit breaker 12 connects main circuit power supply busbar 11, and the outlet terminal of said major loop contactor 13 is connected with socket power terminal 18.
As shown in Figure 3; Said MCC cabinet 1 also comprises control loop; Said control loop includes control loop circuit breaker 20, auxiliary reclay 21 and major loop contactor control coil 22; The end of incoming cables of said control loop circuit breaker 20 connects control loop power supply busbar 23, and said auxiliary reclay 21 is connected with major loop contactor control coil 22, and said major loop contactor control coil 22 is connected with PLC cabinet 2; The break-make of said major loop contactor control coil 22 control major loop contactors 13, said auxiliary reclay 21 is transferred to PLC cabinet 2 with blower fan overload fault signal.
As shown in Figure 4; Include the cooling blower overload protection thermorelay 14 and the first auxiliary electric shock 15 in the said cooling cover blower fan overload protection case 7; Said cooling blower overload protection thermorelay 14 is connected with the power terminal 24 of first plug, and said first auxiliary contact 15 are connected with the first plug control terminal 25.
Said cooling blower overload protection thermorelay 14 is at least two; Be preferably two in the present embodiment; And two said cooling blower overload protection thermorelays 14 are to be connected in parallel; Two said cooling blower overload protection thermorelays 14 are connected in series a cooling blower 9 respectively, and are to work simultaneously.
As shown in Figure 5; Said heating mantle blower fan overload protection case 8 includes combustion fan overload protection thermorelay 16; Said combustion fan overload protection thermorelay 16 is connected with the power terminal 26 of second plug and the control terminal 27 of second plug respectively with second auxiliary contact 17, and the outlet terminal of said combustion fan overload protection thermorelay 16 connects combustion fan 10.
As shown in Figure 6; The supervisory signal that said PLC cabinet 2 is accepted comprises major loop circuit-breaker status signal, fan operation and blower fan overload fault signal; Said PLC cabinet 2 is controlled the electric and dead electricity that gets of major loop contactor control coil 22 through the signal of output, and then controls the opening and closing of major loop contactor 13.
The working principle of said bell-type furnace bonnet blower fan control system; When the coil of strip on the bell-type furnace table need be heat-treated, operator were at first docked second plug 6 on the heating mantle with socket case 3 interior sockets 4, make the main circuit power supply of heating mantle combustion fan 10 and control loop all reliably be communicated with; Then major loop circuit breaker 12 and control loop circuit breaker 20 are closed a floodgate; Make major loop, control loop form path, the last intrasystem program of PLC judges whether to possess the condition that starts combustion fan 10, if condition satisfies; The signal of PLC system output startup command; This moment major loop contactor control coil 22 electric, make the main contact adhesive of major loop contactor 13, this moment combustion fan 10 electric operation; When heat treatment process finishes, the signal that PLC system output is ceased and desisted order, this moment, major loop contactor control coil 22 dead electricity made the main contact of major loop contactor 13 break off, this moment, combustion fan 10 dead electricity were and out of service.
When the coil of strip on the bell-type furnace table need carry out cooling processing, operator at first docks the sockets 4 in first plug 5 on the cooling cover and the socket case 3, made main circuit power supply and all reliably connections of control loop of the cooling blower on the cooling cover; Then major loop circuit breaker 12 and control loop circuit breaker 20 are closed a floodgate; Make major loop, control loop form path, last PLC system program judges whether to possess the condition that starts cooling blower 9, if condition satisfies; The signal of PLC system output startup command; This moment major loop contactor control coil 22 electric, make the main contact adhesive of major loop contactor 13, this moment two cooling blowers 9 simultaneously electric operation; When the cooling processing process finishes, the signal that the output of PLC system is ceased and desisted order, this moment, major loop contactor control coil 22 dead electricity made the main contact of major loop contactor 13 break off, 9 while of two cooling blowers this moment dead electricity, and out of service.
The above embodiment is the preferred embodiment that proves absolutely that the present invention lifts, and protection scope of the present invention is not limited thereto.Being equal to that the technician in present technique field is done on basis of the present invention substitutes or conversion, all within protection scope of the present invention.Protection scope of the present invention is as the criterion with claims.
Claims (8)
1. bell-type furnace bonnet blower fan control system; It is characterized in that this system includes MCC cabinet, PLC cabinet, socket case, cooling cover blower fan overload protection case and heating mantle blower fan overload protection case, is provided with socket in the said socket case; Said socket comprises socket power terminal and socket control terminal; Said MCC cabinet is connected with the PLC cabinet, and said MCC cabinet also is connected with the socket control terminal with socket power terminal respectively, and said cooling blower overload protection case is provided with first plug; Said heating mantle blower fan overload protection case is provided with second plug, and said first plug and second plug all can insert in the socket of socket case.
2. bell-type furnace bonnet blower fan control system according to claim 1; It is characterized in that; Include major loop in the said MCC cabinet, said major loop comprises major loop circuit breaker and major loop contactor, the main contact serial connection of said major loop circuit breaker and major loop contactor; The end of incoming cables of said major loop circuit breaker connects the main circuit power supply busbar, and the outlet terminal of said major loop contactor is connected with socket power terminal.
3. bell-type furnace bonnet blower fan control system according to claim 2; It is characterized in that; Said MCC cabinet also includes control loop; Said control loop comprises control loop circuit breaker, auxiliary reclay and major loop contactor control coil, and the end of incoming cables of said control loop circuit breaker connects control loop power supply busbar, and said auxiliary reclay is connected with major loop contactor control coil; Said major loop contactor control coil is connected with the PLC cabinet, the break-make of said major loop contactor control coil control major loop contactor.
4. bell-type furnace bonnet blower fan control system according to claim 1 is characterized in that said first plug and second plug are provided with power terminal and control terminal.
5. bell-type furnace bonnet blower fan control system according to claim 4; It is characterized in that; Include the cooling blower overload protection thermorelay and first auxiliary contact in the said cooling cover blower fan overload protection case; Said cooling blower overload protection thermorelay is connected with the power terminal of first plug, and said first auxiliary contact are connected with the control terminal of first plug.
6. bell-type furnace bonnet blower fan control system according to claim 5 is characterized in that, said cooling blower overload protection thermorelay is at least two.
7. bell-type furnace bonnet blower fan control system according to claim 6; It is characterized in that; Said cooling blower overload protection thermorelay is two; Two said cooling blower overload protection thermorelays are to be connected in parallel, and two said cooling blower overload protection thermorelays are connected in series a cooling blower respectively.
8. bell-type furnace bonnet blower fan control system according to claim 4; It is characterized in that; Include the combustion fan overload protection thermorelay and second auxiliary contact in the said heating mantle blower fan overload protection case; Said combustion fan overload protection thermorelay is connected with the power terminal of second plug, and said second auxiliary contact are connected with the control terminal of second plug, and the outlet terminal of said combustion fan overload protection thermorelay connects combustion fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210135936.6A CN102678593B (en) | 2012-05-04 | 2012-05-04 | Control system for furnace cap fan of bell type furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210135936.6A CN102678593B (en) | 2012-05-04 | 2012-05-04 | Control system for furnace cap fan of bell type furnace |
Publications (2)
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| CN102678593A true CN102678593A (en) | 2012-09-19 |
| CN102678593B CN102678593B (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210135936.6A Active CN102678593B (en) | 2012-05-04 | 2012-05-04 | Control system for furnace cap fan of bell type furnace |
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Citations (6)
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| US4945201A (en) * | 1989-05-19 | 1990-07-31 | Pertron Controls Corporation | Rack mountable weld controller |
| EP1107093A2 (en) * | 1999-12-09 | 2001-06-13 | Tektronix, Inc. | Thermal control for a test and measurement instrument |
| CN2733542Y (en) * | 2004-07-09 | 2005-10-12 | 金坛苏源集团有限公司 | Control device for air-cooled system of power transformer |
| CN101871467A (en) * | 2010-07-06 | 2010-10-27 | 中冶长天国际工程有限责任公司 | Combustion fan control system for sintering ignition furnace |
| CN102234719A (en) * | 2011-04-21 | 2011-11-09 | 中冶长天国际工程有限责任公司 | Sintering plant operating simulation system |
| CN202612159U (en) * | 2012-05-04 | 2012-12-19 | 中冶南方工程技术有限公司 | Furnace hood blower control system of bell-type furnace |
-
2012
- 2012-05-04 CN CN201210135936.6A patent/CN102678593B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4945201A (en) * | 1989-05-19 | 1990-07-31 | Pertron Controls Corporation | Rack mountable weld controller |
| EP1107093A2 (en) * | 1999-12-09 | 2001-06-13 | Tektronix, Inc. | Thermal control for a test and measurement instrument |
| CN2733542Y (en) * | 2004-07-09 | 2005-10-12 | 金坛苏源集团有限公司 | Control device for air-cooled system of power transformer |
| CN101871467A (en) * | 2010-07-06 | 2010-10-27 | 中冶长天国际工程有限责任公司 | Combustion fan control system for sintering ignition furnace |
| CN102234719A (en) * | 2011-04-21 | 2011-11-09 | 中冶长天国际工程有限责任公司 | Sintering plant operating simulation system |
| CN202612159U (en) * | 2012-05-04 | 2012-12-19 | 中冶南方工程技术有限公司 | Furnace hood blower control system of bell-type furnace |
Non-Patent Citations (1)
| Title |
|---|
| 霍国启: "罩式炉电源的机械插接装置的改进", 《轧钢》, no. 5, 31 October 1994 (1994-10-31) * |
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