CN202612160U - Bell-type furnace heating mantle combustion fan control device - Google Patents
Bell-type furnace heating mantle combustion fan control device Download PDFInfo
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- CN202612160U CN202612160U CN 201220197291 CN201220197291U CN202612160U CN 202612160 U CN202612160 U CN 202612160U CN 201220197291 CN201220197291 CN 201220197291 CN 201220197291 U CN201220197291 U CN 201220197291U CN 202612160 U CN202612160 U CN 202612160U
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Abstract
The utility model discloses a bell-type furnace heating mantle combustion fan control device which comprises a mission control center (MCC) cabinet, a socket box and a heating mantle fan overload protection box. A socket is arranged in the socket box. The socket comprises a socket motive power terminal and a socket control terminal. The MCC cabinet is respectively connected with the socket motive power terminal and the socket control terminal. The heating mantle fan overload protection box is provided with a plug which can be inserted into the socket in the socket box. A leading-out terminal of the heating mantle fan overload protection box is connected with a combustion fan. By means of reasonable configuration of parameters of the device, the bell-type furnace heating mantle combustion fan control device can effectively solve the problem of overload protection trip in the starting process of the combustion fan in different bell-type furnace process systems, guarantees reliable and safe operation of a heating mantle combustion system, simultaneously can reduce investment cost of electrical equipment, and is convenient to operate and maintain.
Description
Technical field
The utility model relates to metallurgy industry cold-strip steel heat treatment bell-type furnace process system, relates in particular to a kind of bell-type furnace heating mantle combustion fan control gear.
Background technique
Bell-type furnace is the heat treatment installation in the cold rolling production, through the mixed gas that on the bell-type furnace heating mantle, burns, comes the coil of strip in the stove is annealed, to eliminate the deficiencies such as work-hardening, plasticity reduction and specific elongation reduction that produce in the cold rolling of strip steel.The heating mantle combustion fan is as the crucial electrical equipment in the heating mantle combustion system, and the quality of its operation conditions directly has influence on the length of annealing time and the output of unit.
To the electic protection of heating mantle combustion fan, mainly be to adopt thermorelay to carry out the overload protection of blower fan.Shape, the length of the air conduit that joins with combustion fan are decided by process system, thereby have caused the drag characteristic of air conduit all inequality, and combustion fan also just has nothing in common with each other starting time.
Usually occur thermorelay in the engineering and in the start-up course of blower fan, protect tripping operation, cause the fan starting failure.At present, the way that adopts in the engineering mainly contains: the one, amplify the protection domain of thermorelay, and though the blower fan of normal operation can not be effectively protected in the protection tripping operation can avoid fan starting the time, there is very big potential safety hazard; The 2nd, adopt electronic thermal relay, but equipment price is high, Operation and Maintenance is inconvenient.
The model utility content
The technical problem that the utility model will solve provides a kind ofly can solve overload protection tripping operation problem in the combustion fan start-up course, can guarantee the operation that the heating mantle combustion system is reliable and secure, can reduce the bell-type furnace heating mantle combustion fan control gear of electrical equipment cost of investment.
In order to solve the problems of the technologies described above; The utility model provides a kind of bell-type furnace heating mantle combustion fan control gear; This device includes MCC cabinet, socket case and heating mantle blower fan overload protection case, is provided with socket in the socket case, and said socket comprises socket power terminal and socket control terminal; Said MCC cabinet is connected with the socket control terminal with socket power terminal respectively; Said heating mantle blower fan overload protection case is provided with plug, and said plug can insert in the socket of socket case, and the outlet terminal of said heating mantle blower fan overload protection case connects combustion fan.
Further; Said MCC cabinet comprises major loop; Be provided with major loop circuit breaker and major loop contactor in the said major loop; 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 comprises control loop; Be provided with the control coil of the first control loop circuit breaker, auxiliary reclay and major loop contactor in the said control loop, the end of incoming cables of the said first control loop circuit breaker connects control loop power supply busbar, and said auxiliary reclay is connected with the control coil of major loop contactor; The break-make of the control coil control major loop contactor of said major loop contactor, said control loop is connected with the socket control terminal.
Further, the control loop in the said MCC cabinet also is connected with the PLC cabinet.
Further; The auxiliary contact of thermorelay, bypass contactor and thermorelay are installed in the said heating mantle blower fan overload protection case; Said thermorelay and bypass contactor are connected in parallel; The power terminal of said thermorelay end of incoming cables attachment plug, the outlet terminal of said thermorelay is connected with combustion fan, the control terminal of the auxiliary contact attachment plug of said thermorelay.
Further; Also comprise control loop in the said heating mantle blower fan overload protection case; Be provided with the second control loop circuit breaker, time delay relay and bypass contactor control coil in the said control loop; Said control loop circuit breaker connects control loop power supply busbar, and said time delay relay all is connected with the second control loop circuit breaker with the bypass contactor control coil.
Further, the control loop in the said heating mantle blower fan overload protection case is connected with the PLC cabinet.
The utility model is through the parameter of reasonable disposition device; In different bell-type furnace process systems; Can solve the overload protection tripping operation problem in the combustion fan start-up course effectively; Guarantee the reliable and secure operation of heating mantle combustion-supporting system, can reduce the electrical equipment cost of investment simultaneously, and convenient operating maintenance.
Description of drawings
Fig. 1 is the utility model bell-type furnace heating mantle combustion fan control gear one embodiment's a schematic diagram;
Fig. 2 is the control loop figure of MCC cabinet among the utility model one embodiment;
Fig. 3 is the electrical schematic diagram of combustion fan overload protection case control loop among the utility model one embodiment;
Fig. 4 is a PLC electrical schematic diagram among the utility model one embodiment.
Among the figure, 1. socket case, 2. heating mantle blower fan overload protection case, 3. socket, 4. socket power terminal; 5. socket control terminal, 6. major loop circuit breaker, 7. major loop contactor, 8. main circuit power supply busbar; 9. the first control loop circuit breaker, 10. auxiliary reclay, 11. major loop contactor control coils, 12. thermorelays; 13. bypass contactor, 14. thermorelay auxiliary contact, 15. plugs, the power terminal of 16. plugs; 17. the control terminal of plug, 18. second control loop circuit breakers, 19. time delay relays, 20. time delay relay control coils; 21. the bypass contactor control coil, 22. PLC cabinets, 23. combustion fans, 24. control loops power supply busbar.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further so that those skilled in the art can better understand the utility model and implementing, but the embodiment that lifts not conduct to the qualification of the utility model.
As shown in Figure 1, be an embodiment of the utility model bell-type furnace heating mantle combustion fan control gear, this device comprises; MCC cabinet (Motor Control Center; Motor control center's cabinet), socket case 1 and heating mantle blower fan overload protection case 2, be provided with socket 3 in the socket case 1, said socket 3 comprises socket power terminal 4 and socket control terminal 5; Said MCC cabinet is connected with socket control terminal 5 with socket power terminal 4 respectively; Said heating mantle blower fan overload protection case 2 is provided with plug 15, and said plug 15 can insert in the socket 3 of socket case 1, and the outlet terminal of said heating mantle blower fan overload protection case 2 connects combustion fan 23.
Said MCC cabinet comprises major loop; Be provided with major loop circuit breaker 6 and major loop contactor 7 in the said major loop; The main contact serial connection of said major loop circuit breaker 6 and major loop contactor 7; The end of incoming cables of said major loop circuit breaker 6 connects main circuit power supply busbar 8, and the outlet terminal of said major loop contactor 7 is connected with socket power terminal 4.
As shown in Figure 2; Said MCC cabinet also comprises control loop; Be provided with the control coil 11 of the first control loop circuit breaker 9, auxiliary reclay 10 and major loop contactor in the said control loop, the end of incoming cables of the said first control loop circuit breaker 9 connects control loop power supply busbar 24, and said auxiliary reclay 10 is connected with major loop contactor control coil 11; The break-make of said major loop contactor control coil 11 control major loop contactors 7, said control loop is connected with the socket control terminal.
As shown in Figure 1; In the said heating mantle blower fan overload protection case 2 thermorelay 12, bypass contactor 13 and thermorelay auxiliary contact 14 are installed; Said thermorelay 12 is connected in parallel with bypass contactor 13; The power terminal 16 of said thermorelay 12 ends of incoming cables and plug is connected, and said thermorelay auxiliary contact 14 are connected with plug control terminal 17, and the outlet terminal of said thermorelay 12 is connected with combustion-supporting machine 23.
As shown in Figure 3; The second control loop circuit breaker 18, time delay relay 19 and bypass contactor control coil 21 also are installed in the said heating mantle blower fan overload protection case 2; The said second control loop circuit breaker 18 connects control loop power supply busbar 24; Said time delay relay 19 all is connected with the second control loop circuit breaker 18 with bypass contactor control coil 21, the break-make of said bypass contactor control coil 21 control bypass contactors 13.
Control loop in control loop in the said MCC cabinet and the heating mantle blower fan overload protection case all with PLC (Programmable Logic Controller; Programmable logic controller (PLC)) cabinet 22 connects; As shown in Figure 4; Said PLC cabinet 22 is in order to accept the control loop feedack; Include state signal, fan operation signal and the blower fan overload fault signal of main disconnector, said PLC cabinet 22 is transported to major loop contactor control coil 11 and time delay relay control coil 20 respectively with signal, the break-make of said time delay relay control coil 20 control time delay relays 19.
When the coil of strip on the bell-type furnace table need be heat-treated; At first the plug on the heating mantle 15 is docked with socket case 1 interpolation block 3; Main circuit power supply, the control loop of guaranteeing combustion fan 23 all are communicated with; Then major loop circuit breaker 6, the first control loop circuit breaker 9 and the second control loop circuit breaker 18 are closed a floodgate, make that the power supply of major loop and control loop is normal.
Program in the PLC cabinet 22 then; Judge whether to possess the condition that starts combustion fan; If condition satisfies, PLC cabinet 22 is exported ceasing and desisting order of combustion fan 23 startup command and thermorelay 12 simultaneously, and major loop contactor control coil 11 gets at this moment; Make the main contact adhesive of major loop contactor 7, then combustion fan gets electric startup;
In the start-up course, time delay relay control coil 20 and bypass contactor control coil 21 always electric, bypass contactor 13 main contact adhesives, in start-up course, electric current mainly is that the main contact through bypass contactor 13 is transferred to combustion fan 23; When time delay relay 19 reaches the deadline of setting, bypass contactor control coil 21 dead electricity, bypass contactor 13 main contacts break off, and this moment, electric current mainly was to be transferred to combustion fan 23 through thermorelay 12.
When heat treatment process finishes; The PLC system exports combustion fan 23 simultaneously and ceases and desist order and thermorelay 12 startup command, and this moment, major loop contactor control coil 11 dead electricity made major loop contactor 6 main contacts break off; Be connected to combustion fan 23 dead electricity on this loop this moment, and out of service; Time delay relay control coil 20 dead electricity, make bypass contactor control coil 21 electric, make bypass contactor 13 main contact adhesives.
Therefore; Set time through reasonable adjustment time delay relay 19; Inrush current in the assurance combustion fan start-up course breaks off bypass contactor 13 mainly through bypass contactor 13 after startup is accomplished, and has solved because of causing the problem of thermorelay 12 tripping operations in the combustion fan startup.
The above embodiment is the preferred embodiment that proves absolutely that the utility model is lifted, and the protection domain of the utility model is not limited thereto.Being equal to that the technician in present technique field is done on the utility model basis substitutes or conversion, all within the protection domain of the utility model.The protection domain of the utility model is as the criterion with claims.
Claims (7)
1. bell-type furnace heating mantle combustion fan control gear; It is characterized in that; This device includes MCC cabinet, socket case and heating mantle blower fan overload protection case, is provided with socket in the socket case, and said socket comprises socket power terminal and socket control terminal; Said MCC cabinet is connected with the socket control terminal with socket power terminal respectively; Said heating mantle blower fan overload protection case is provided with plug, and said plug can insert in the socket of socket case, and the outlet terminal of said heating mantle blower fan overload protection case connects combustion fan.
2. bell-type furnace heating mantle combustion fan control gear according to claim 1; It is characterized in that; Said MCC cabinet comprises major loop, is provided with major loop circuit breaker and major loop contactor in the said major loop, 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 heating mantle combustion fan control gear according to claim 1 is characterized in that,
Said MCC cabinet also comprises control loop; Be provided with the control coil of the first control loop circuit breaker, auxiliary reclay and major loop contactor in the said control loop; The end of incoming cables of the said first control loop circuit breaker connects control loop power supply busbar; Said auxiliary reclay is connected with the control coil of major loop contactor, the break-make of the control coil control major loop contactor of said major loop contactor, and said control loop is connected with the socket control terminal.
4. bell-type furnace heating mantle combustion fan control gear according to claim 3 is characterized in that the control loop in the said MCC cabinet also is connected with the PLC cabinet.
5. bell-type furnace heating mantle combustion fan control gear according to claim 1; It is characterized in that; The auxiliary contact of thermorelay, bypass contactor and thermorelay are installed in the said heating mantle blower fan overload protection case, and said thermorelay and bypass contactor are connected in parallel, the power terminal of said thermorelay end of incoming cables attachment plug; The outlet terminal of said thermorelay is connected with combustion fan, the control terminal of the auxiliary contact attachment plug of said thermorelay.
6. bell-type furnace heating mantle combustion fan control gear according to claim 5; It is characterized in that; Also comprise control loop in the said heating mantle blower fan overload protection case; Be provided with the second control loop circuit breaker, time delay relay and bypass contactor control coil in the said control loop, said control loop circuit breaker connects control loop power supply busbar, and said time delay relay all is connected with the second control loop circuit breaker with the bypass contactor control coil.
7. bell-type furnace heating mantle combustion fan control gear according to claim 6 is characterized in that, the control loop in the said heating mantle blower fan overload protection case is connected with the PLC cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220197291 CN202612160U (en) | 2012-05-04 | 2012-05-04 | Bell-type furnace heating mantle combustion fan control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220197291 CN202612160U (en) | 2012-05-04 | 2012-05-04 | Bell-type furnace heating mantle combustion fan control device |
Publications (1)
| Publication Number | Publication Date |
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| CN202612160U true CN202612160U (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220197291 Expired - Fee Related CN202612160U (en) | 2012-05-04 | 2012-05-04 | Bell-type furnace heating mantle combustion fan control device |
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| CN (1) | CN202612160U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362933A (en) * | 2018-02-02 | 2018-08-03 | 浙江金盾风机股份有限公司 | A kind of universal wind turbine starting condition measuring device |
-
2012
- 2012-05-04 CN CN 201220197291 patent/CN202612160U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362933A (en) * | 2018-02-02 | 2018-08-03 | 浙江金盾风机股份有限公司 | A kind of universal wind turbine starting condition measuring device |
| CN108362933B (en) * | 2018-02-02 | 2021-07-23 | 浙江金盾风机股份有限公司 | General type fan starting situation measuring device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20140504 |