CN203983952U - High temperature box type resistance furnace protection system - Google Patents
High temperature box type resistance furnace protection system Download PDFInfo
- Publication number
- CN203983952U CN203983952U CN201420395929.4U CN201420395929U CN203983952U CN 203983952 U CN203983952 U CN 203983952U CN 201420395929 U CN201420395929 U CN 201420395929U CN 203983952 U CN203983952 U CN 203983952U
- Authority
- CN
- China
- Prior art keywords
- current transformer
- resistance furnace
- chip microcomputer
- temperature
- circuit breaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A kind of high temperature box type resistance furnace protection system that the utility model is designed, power supply is accessed respectively in its circuit breaker one end, circuit breaker other end interface connects winding of current transformer, and winding of current transformer is all connected with resistance furnace by ic temperature transducer; Secondary winding in current transformer connects single-chip microcomputer; The temperature signal output of ic temperature transducer connects the temperature signal input of single-chip microcomputer, the control end of the control signal output connecting breaker of single-chip microcomputer.The result that the utility model resistance furnace temperature, supply current and supply power voltage detect realizes the protection to resistance furnace by Single-chip Controlling circuit breaker, has effectively prevented that the heating element causing because resistance furnace temperature is too high from rupturing, short circuit.
Description
Technical field
The utility model relates to resistance furnace resist technology field, refers to particularly a kind of high temperature box type resistance furnace protection system.
Technical background
High temperature box type resistance furnace as metal material and nonmetallic materials are heat-treated, the high-temperature service of the experiment such as sintering, dissolving, analysis, be widely used in colleges and universities, R&D institution and industrial and mining enterprises.This equipment is made up of parts such as furnace shell, furnace lining, heating element, thermocouple and controllers.The heating element of most resistance furnaces adopts Elema or silicon molybdenum, is realized and is measured, indicates and automatically control by temperature controller and platinum rhodium-platinum thermocouple.
High temperature box type resistance furnace there will be heating element fracture in long-term use procedure; short circuit; the faults such as supply current electric voltage exception; can cause so the direct tripping operation of circuit even to be burnt; existing high temperature box type resistance furnace lacks necessary safeguard measure and fault alarm instruction measure; be unfavorable for the operation and maintenance of resistance furnace, affected the useful life of resistance furnace.
Utility model content
The purpose of this utility model will provide a kind of high temperature box type resistance furnace protection system exactly; it is abnormal that this system can make operating personnel judge in time, investigate the temp of heating element that resistance furnace in use occurs; the faults such as supply current and supply power voltage are abnormal; meanwhile, the result that this system detects according to resistance furnace temperature, supply current and supply power voltage realizes the protection to resistance furnace by Single-chip Controlling circuit breaker.
For realizing this object, the high temperature box type resistance furnace protection system that the utility model is designed, it comprises resistance furnace, it is characterized in that: it also comprises single-chip microcomputer, circuit breaker, the first current transformer, the second current transformer, the 3rd current transformer and ic temperature transducer, wherein, the A interfaces of described circuit breaker one end, B interfaces and C interfaces access respectively the A phase of power supply, B phase and C phase, the A interfaces of the circuit breaker other end connects one end of a winding of the first current transformer, the B interfaces of the circuit breaker other end connects one end of a winding of the second current transformer, the C interfaces of the circuit breaker other end connects one end of a winding of the 3rd current transformer, the first current transformer one time winding, the other end of the second current transformer one time winding and a winding of the 3rd current transformer is all connected with resistance furnace by ic temperature transducer,
One end of the first secondary winding in current transformer connects the first current signal input of single-chip microcomputer, one end of the second secondary winding in current transformer connects the second current signal input of single-chip microcomputer, one end of the 3rd secondary winding in current transformer connects the 3rd current signal input of single-chip microcomputer, the equal ground connection of the other end of the first secondary winding in current transformer, the second secondary winding in current transformer and the 3rd secondary winding in current transformer;
The temperature signal output of described ic temperature transducer connects the temperature signal input of single-chip microcomputer, the control end of the control signal output connecting breaker of single-chip microcomputer.
The utility model is by the above-mentioned high temperature box type resistance furnace protection system of design; realize the detection to resistance furnace temperature, supply current and supply power voltage; and the result detecting according to resistance furnace temperature, supply current and supply power voltage realizes the protection to resistance furnace by Single-chip Controlling circuit breaker; effectively prevent the heating element fracture causing because resistance furnace temperature is too high, short circuit.In addition, single-chip microcomputer in the utility model can also show resistance furnace temperature value, power supply current value and supply power voltage value in real time by display, can make technical staff know the real-time working situation of resistance furnace, facilitate the operation and maintenance of technical staff to resistance furnace, ensured the useful life of resistance furnace.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Wherein, 1-resistance furnace, 2-single-chip microcomputer, 3-circuit breaker, the 4-the first current transformer, the 5-the second current transformer, the 6-the three current transformer, 7-ic temperature transducer, 8-power supply, 9-display.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
High temperature box type resistance furnace protection system in figure shown in 1, it comprises resistance furnace 1, single-chip microcomputer 2, circuit breaker 3, the first current transformer 4, the second current transformer 5, the 3rd current transformer 6 and ic temperature transducer 7, wherein, the A interfaces of described circuit breaker 3 one end, B interfaces and C interfaces access respectively the A phase of power supply 8, B phase and C phase, the A interfaces of circuit breaker 3 other ends connects one end of 4 windings of the first current transformer, the B interfaces of circuit breaker 3 other ends connects one end of 5 windings of the second current transformer, the C interfaces of circuit breaker 3 other ends connects one end of 6 windings of the 3rd current transformer, the first current transformer 4 one times winding, the other end of the second current transformer 5 one times winding and 6 windings of the 3rd current transformer is all connected with resistance furnace 1 by ic temperature transducer 7,
One end of the first current transformer 4 secondary winding connects the first current signal input of single-chip microcomputer 2, one end of the second current transformer 5 secondary winding connects the second current signal input of single-chip microcomputer 2, one end of the 3rd current transformer 6 secondary winding connects the 3rd current signal input of single-chip microcomputer 2, the equal ground connection of the other end of the first current transformer 4 secondary winding, the second current transformer 5 secondary winding and the 3rd current transformer 6 secondary winding;
The temperature signal output of described ic temperature transducer 7 connects the temperature signal input of single-chip microcomputer 2, the control end of the control signal output connecting breaker 3 of single-chip microcomputer 2.
In technique scheme, current transformer is for large current conversion is become to adapt to the little electric current that single-chip microcomputer 2 reads, and this little current signal can react the situation of the supply current of power supply 8.
Ic temperature transducer 7 in technique scheme comprises a warm power transformation resistance accurately, and the different resistance differences of temperature, export actual temperature signal by internal calculation.
In technique scheme, the A phase of described power supply 8, B phase and C are also connected respectively the first voltage measurement end, second voltage measuring junction and the tertiary voltage measuring junction of single-chip microcomputer 2 mutually.Single-chip microcomputer 2 can read the magnitude of voltage of power supply 8, and judges that whether magnitude of voltage is normal.
In technique scheme, the display output of described single-chip microcomputer 2 is connected with display 9.
In technique scheme, the model of single-chip microcomputer 2 is TMS320C5000.
The utility model course of work is: under initial situation, circuit breaker 3 is connected, power supply 8 is powered to resistance furnace 1, in the time of the variations in temperature of resistance furnace 1, ic temperature transducer 7 obtains the temperature signal of resistance furnace 1 by the variation of resistance, temperature signal is transferred to single-chip microcomputer 2 by ic temperature transducer 7, single-chip microcomputer 2 is monitored this temperature signal, in the time that this temperature is between 130～250 degree, single-chip microcomputer 2 is to 9 alarm signals of display, if this temperature keeps 10min, single-chip microcomputer 2 is controlled circuit breaker 3 and is disconnected, and stops resistance furnace 1 to power.When temperature exceedes 250 while spending, single-chip microcomputer 2 is directly controlled circuit breaker 3 and is disconnected, and stops resistance furnace 1 to power, and resistance furnace 1 is protected.
Simultaneously; the current value of the real-time induction power supply 8 of current transformer; in the time that the time that any phase current sensing is greater than 1.15 times of rated current reaches 15 minutes; single-chip microcomputer 2 is to 9 overload signals of display; while reaching 30 minutes; single-chip microcomputer 2 is controlled circuit breaker 3 and is disconnected, and stops resistance furnace 1 to power, and resistance furnace 1 is protected.
Meanwhile, single-chip microcomputer 2 obtains the magnitude of voltage of power supply 8 in real time, and when in the scope that magnitude of voltage does not specify in rated voltage, single-chip microcomputer 2 is controlled circuit breaker 3 and disconnected, and stops resistance furnace 1 to power, and resistance furnace 1 is protected.
Meanwhile, the current value obtaining when current transformer is zero, when magnitude of voltage is normal, now can be judged as the heating element fracture of resistance furnace 1.
The content that specification is not described in detail belongs to the known prior art of professional and technical personnel in the field.
Claims (3)
1. a high temperature box type resistance furnace protection system, it comprises resistance furnace (1), it is characterized in that: it also comprises single-chip microcomputer (2), circuit breaker (3), the first current transformer (4), the second current transformer (5), the 3rd current transformer (6) and ic temperature transducer (7), wherein, the A interfaces of described circuit breaker (3) one end, B interfaces and C interfaces access respectively the A phase of power supply (8), B phase and C phase, the A interfaces of circuit breaker (3) other end connects one end of (4) windings of the first current transformer, the B interfaces of circuit breaker (3) other end connects one end of (5) windings of the second current transformer, the C interfaces of circuit breaker (3) other end connects one end of (6) windings of the 3rd current transformer, the first current transformer (4) times winding, the other end of the second current transformer (5) times winding and (6) windings of the 3rd current transformer is all connected with resistance furnace (1) by ic temperature transducer (7),
One end of the first current transformer (4) secondary winding connects the first current signal input of single-chip microcomputer (2), one end of the second current transformer (5) secondary winding connects the second current signal input of single-chip microcomputer (2), one end of the 3rd current transformer (6) secondary winding connects the 3rd current signal input of single-chip microcomputer (2), the equal ground connection of the other end of the first current transformer (4) secondary winding, the second current transformer (5) secondary winding and the 3rd current transformer (6) secondary winding;
The temperature signal output of described ic temperature transducer (7) connects the temperature signal input of single-chip microcomputer (2), the control end of the control signal output connecting breaker (3) of single-chip microcomputer (2).
2. high temperature box type resistance furnace protection system according to claim 1, is characterized in that: A phase, B phase and the C of described power supply (8) is also connected respectively the first voltage measurement end, second voltage measuring junction and the tertiary voltage measuring junction of single-chip microcomputer (2) mutually.
3. high temperature box type resistance furnace protection system according to claim 1, is characterized in that: the display output of described single-chip microcomputer (2) is connected with display (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420395929.4U CN203983952U (en) | 2014-07-17 | 2014-07-17 | High temperature box type resistance furnace protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420395929.4U CN203983952U (en) | 2014-07-17 | 2014-07-17 | High temperature box type resistance furnace protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203983952U true CN203983952U (en) | 2014-12-03 |
Family
ID=51981368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420395929.4U Expired - Fee Related CN203983952U (en) | 2014-07-17 | 2014-07-17 | High temperature box type resistance furnace protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203983952U (en) |
-
2014
- 2014-07-17 CN CN201420395929.4U patent/CN203983952U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170726 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuchang, Hubei Friendship Road, No. A, block, floor 999, 15 Patentee before: Wuhan Iron & Steel (Group) Corp. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20180717 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |