CN207067301U - Short-circuit protection for Equipment for Heating Processing - Google Patents
Short-circuit protection for Equipment for Heating Processing Download PDFInfo
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- CN207067301U CN207067301U CN201720833806.8U CN201720833806U CN207067301U CN 207067301 U CN207067301 U CN 207067301U CN 201720833806 U CN201720833806 U CN 201720833806U CN 207067301 U CN207067301 U CN 207067301U
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Abstract
The utility model discloses a kind of short-circuit protection for Equipment for Heating Processing, belong to Field of Heat-treatment.The short-circuit protection comprises at least power circuit, input circuit, input signal analysis circuit, output circuit；Input circuit includes signal input part, and input signal end receives input signal；The output end of input circuit is connected with the input of precision data detector, the output end of precision data detector is connected with the inverting input of the first operational amplifier, the output end of first operational amplifier connects the in-phase input end of the second operational amplifier, the input of the output end connection output circuit of the second operational amplifier；Solving in correlation technique Equipment for Heating Processing can not make a response when occurring short-circuit with workpiece, and operating personnel are difficult to short trouble occurs in time, the problem of easily causing potential safety hazard；Reach and improved the security of Equipment for Heating Processing at work, the effect of short-circuit protection is played to Equipment for Heating Processing.
Description
Technical field
The utility model embodiment is related to Field of Heat-treatment, and more particularly to a kind of short-circuit protection for Equipment for Heating Processing fills
Put.
Background technology
Heat treatment is to improve the critical process of machine components quality and prolonged mechanical part service life, and Equipment for Heating Processing is
The capital equipment of metal heating processing technology is realized, Technology for Heating Processing includes annealing, tempering, quenching, heating.
Equipment for Heating Processing includes capital equipment and auxiliary equipment, and capital equipment is used to complete main heat treatment step, that is, added
Hot and cold but, including various firing equipments, such as heating furnace and heater, and cooling device, such as cooling chamber, quenching tank；
Auxiliary equipment is used for the aided process for completing such as pickling, cleaning, cleaning, alignment, inspection etc.
When being heat-treated to workpiece, Equipment for Heating Processing is possible to that short circuit or sparking can occur with workpiece, and at heat
Reason equipment can not make a response to this situation, easily cause potential safety hazard.
Utility model content
In order to solve problem of the prior art, the utility model embodiment provides a kind of short circuit for Equipment for Heating Processing
Protection device.The technical scheme is as follows：
First aspect, there is provided a kind of short-circuit protection for Equipment for Heating Processing, the short-circuit protection at least wrap
Include power circuit, input circuit, input signal analysis circuit, output circuit；
The power circuit comprises at least rectifier bridge, voltage-stablizer, electric capacity；The output end of the power circuit and the input
Circuit, the input signal analysis circuit, the output circuit connect respectively；
The input circuit includes signal input part, and the input signal end receives input signal；
The input signal analysis circuit includes precision data detector, the first operational amplifier and the second operation amplifier
Device；
The output end of the input circuit is connected with the input of the precision data detector, the precision data detection
The output end of device is connected with the inverting input of first operational amplifier, the output end connection of first operational amplifier
The in-phase input end of second operational amplifier, the output end of second operational amplifier connect the defeated of the output circuit
Enter end；
The output circuit includes diode, triode, light emitting diode and relay.
Optionally, the input circuit includes first resistor, 3rd resistor, the first electric capacity, variable resistor and switch；
Described variable resistor one end connects the output end of power circuit, is opened described in the other end connection of the variable resistor
Close, the switch connection first resistor, the filter circuit that the first resistor connection is made up of 3rd resistor and the first electric capacity；
The input of the filter circuit is signal input part, and the common port of the first resistor and the first electric capacity is described
The output end of input circuit.
Optionally, the signal evaluation circuit also includes second resistance, the first diode, the 5th resistance, the 6th resistance, electricity
Position device, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11st resistance, the second diode, the second electric capacity；
The second resistance is connected with the positive pole of first diode, positive pole and the precision of first diode
The input connection of data detector, the output end of the input circuit are connected with the second resistance；
The output end of the precision data detector connects the anti-of first operational amplifier by the 5th resistance
Phase input, the in-phase input end of first operational amplifier is grounded by the 6th resistance and the potentiometer, described
Potentiometer is also connected with the output end of the power circuit；
The output end of first operational amplifier connects the same of second operational amplifier by the 7th resistance
Phase input, the in-phase input end of second operational amplifier are also connected with feedback circuit, and the feedback circuit is by described second
Diode and the 8th resistant series are formed；
The inverting input of second operational amplifier is connected with the 9th resistance, the 9th resistance eutral grounding；Institute
State the inverting input of the second operational amplifier and the common port of the 9th resistance is connected the tenth resistance, the tenth electricity
Resistance ground connection；
The input of second operational amplifier also passes through the 11st resistance eutral grounding；
The output end of second operational amplifier is also connected with second electric capacity, second capacity earth；
Second operational amplifier is the signal analysis with second diode, the common port of second electric capacity
The output end of circuit.
Optionally, the output end of the input signal analysis circuit is connected with the negative pole of the 3rd diode, and the described 3rd 2
The positive pole of pole pipe connects the base stage of the triode by the 4th resistance；
The emitter stage of the triode connects the positive pole of the light emitting diode, the negative pole ground connection of the light emitting diode；
The colelctor electrode of the triode connects the output end of the power circuit by the relay, and the relay is simultaneously
Join the 4th diode.
Optionally, in addition to reset circuit；
The reset circuit includes reset key, the 12nd resistance, the 5th diode；
One end of the reset key is connected by the 12nd resistance with the negative pole of the 5th diode, described multiple
The other end connection power supply of position button；
The positive pole of 5th diode is connected with the in-phase input end of second operational amplifier.
Optionally, the input connection 220V AC powers of the rectifier bridge in the power circuit；
The output end of the rectifier bridge connects the input of two voltage-stablizers；
The 5th electric capacity, the input of second voltage-stablizer are connected between the input and earth terminal of first voltage-stablizer
The 6th electric capacity is connected between end and earth terminal；
5th electric capacity, the 6th electric capacity, the earth terminal of first voltage-stablizer and the earth terminal of the second voltage-stablizer
It is grounded respectively；
The output end of first voltage-stablizer be the power circuit output end, the output end of first voltage-stablizer with
The 7th electric capacity is connected between the earth terminal of first voltage-stablizer；8th electric capacity is connected in parallel on the two of the 7th electric capacity
End；7th electric capacity and the 8th electric capacity are grounded respectively；
The output end of second voltage-stablizer connects the 9th electric capacity and the tenth electric capacity, the tenth capacity earth.
The beneficial effect brought of technical scheme that the utility model embodiment provides is：
This is used for the short-circuit protection of Equipment for Heating Processing, including power circuit, input circuit, input signal analysis electricity
Road, output circuit；Input circuit receives input signal, input signal analysis circuit analysis input signal, determines Equipment for Heating Processing
Whether occur short circuit with workpiece, and the electric signal for representing result is sent to output circuit, the light emitting diode in output circuit
The luminous alarm when Equipment for Heating Processing and workpiece occur short-circuit, is not turned on when with workpiece short circuit does not occur for Equipment for Heating Processing；Solution
In correlation technique of having determined, Equipment for Heating Processing can not make a response when occurring short-circuit with workpiece, and operating personnel are difficult to occur in time
Short trouble, the problem of easily causing potential safety hazard；Reach and improved the security of Equipment for Heating Processing at work, to heat treatment
Equipment plays the effect of short-circuit protection.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is a kind of structural frames of short-circuit protection for Equipment for Heating Processing according to an exemplary embodiment
Figure；
Fig. 2 is a kind of circuit theory diagrams of power circuit according to an exemplary embodiment；
Fig. 3 is a kind of input circuit, input signal analysis circuit and the output circuit according to an exemplary embodiment
Connection diagram.
Embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Type embodiment is described in further detail.
Fig. 1 is refer to, it illustrates the short-circuit protection for Equipment for Heating Processing that the utility model one embodiment provides
The structured flowchart of device.As shown in figure 1, the short-circuit protection for being used for Equipment for Heating Processing comprises at least：Power circuit 100,
Input circuit 110, input signal analysis circuit 120, output circuit 130.
Power circuit 100 comprises at least rectifier bridge, voltage-stablizer, electric capacity.
The output end of power circuit 100 is distinguished with input circuit 110, input signal analysis circuit 120, output circuit 130
Connection.
The input connection 220V AC powers of power circuit 100.
Power circuit is used for for input circuit, input signal analysis circuit, output circuit power supply.
Optionally, power circuit also includes light emitting diode.
Fig. 2 schematically illustrates the circuit theory diagrams of power circuit 100.
Rectifier bridge E1 output end connects two voltage-stablizers M1 and M2 input.
Rectifier bridge E1 is made up of four diodes.Voltage-stablizer M1 model MC7812T, voltage-stablizer M2 model
MC7912T。
The 5th electric capacity C5 is connected between first voltage-stablizer M1 input Vin and earth terminal GND, the second voltage-stablizer M2's
The 6th electric capacity C6 is connected between input Vin and earth terminal GND；
5th electric capacity C5, the 6th electric capacity C6, the first voltage-stablizer M1 earth terminal GND and the second voltage-stablizer M2 earth terminal
GND is grounded respectively.
First voltage-stablizer M1 output end output+12V voltages, the second voltage-stablizer M2 output end output -12V voltages.
First voltage-stablizer M1 output end out is the output end VCC, the first voltage-stablizer M1 output end out of power circuit
The 7th electric capacity C7 is connected between the first voltage-stablizer M1 earth terminal GND；8th electric capacity C8 is connected in parallel on the two of the 7th electric capacity C7
End；7th electric capacity C7 and the 8th electric capacity C8 are grounded respectively.
Second voltage-stablizer M2 output end out connections the 9th electric capacity C9 and the tenth electric capacity C10, the tenth electric capacity C10 ground connection.
13rd resistance R13 connect the first LED 1 after, be connected to the first voltage-stablizer M1 output end out and
Between first voltage-stablizer M1 earth terminal GND；14th resistance R14 connects after the second LED 2, is connected to second
Between voltage-stablizer M2 earth terminal GND and the second voltage-stablizer M2 output end out.
Optionally, the output end VCC of power circuit is also connected with the 3rd voltage-stablizer, the output end output+5V of the 3rd voltage-stablizer
Voltage.
Input circuit 110 includes signal input part, and signal input part receives input signal.
Optionally, feedback signal when input signal is Equipment for Heating Processing workpieces processing, the feedback signal are used to represent heat
With workpiece short circuit occurs for processing equipment, or, with workpiece short circuit does not occur for Equipment for Heating Processing.
Optionally, input signal is intended to indicate that the signal of the water resistance of cooling water in Equipment for Heating Processing, and the signal is used to refer to
Show that the water resistance of cooling water is normal or the water resistance of cooling water is less than predetermined value.
Input signal analysis circuit includes precision data detector, the first operational amplifier and the second operational amplifier.
The output end of input circuit is connected with the input of precision data detector, the output end of precision data detector with
The inverting input connection of first operational amplifier, the output end of the first operational amplifier connect the same phase of the second operational amplifier
Input, the input of the output end connection output circuit of the second operational amplifier.
It is to represent that the signal of short circuit occurs with workpiece for Equipment for Heating Processing that precision data detector, which is used to distinguish input signal, also
It is to represent that the signal of short circuit does not occur with workpiece for Equipment for Heating Processing；Or precision data detector is for distinguishing input signal
The normal signal of water resistance of cooling water is represented, or represents that the water resistance of cooling water is less than the signal of predetermined value.
Optionally, the model BDS3004 of precision data detector.
Output circuit includes diode, triode, light emitting diode and relay.
The output end of input signal analysis circuit is connected with light emitting diode.
When the water resistance of workpiece and Equipment for Heating Processing generation short circuit, or cooling water is less than predetermined value, light emitting diode is led
It is logical, light is sent, prompts operating personnel's process problem.
In summary, the short-circuit protection for Equipment for Heating Processing that the utility model embodiment provides, including power supply
Circuit, input circuit, input signal analysis circuit, output circuit；Input circuit receives input signal, input signal analysis circuit
Input signal is analyzed, determines whether Equipment for Heating Processing occurs short circuit with workpiece, and the electric signal for representing result is sent to output
Circuit, light emitting diode in the output circuit luminous alarm when Equipment for Heating Processing and workpiece occur short-circuit, in Equipment for Heating Processing
Do not occur to be not turned on during short circuit with workpiece；Solve in correlation technique, Equipment for Heating Processing can not be done when occurring short-circuit with workpiece
Go out reaction, operating personnel are difficult to short trouble occurs in time, the problem of easily causing potential safety hazard；Reach raising heat treatment to set
Standby security at work, the effect of short-circuit protection is played to Equipment for Heating Processing.
Fig. 3 schematically illustrates the connection diagram of input circuit, input signal analysis circuit and output circuit.Such as figure
Shown in 3：
Input circuit includes first resistor R1,3rd resistor R3, the first electric capacity C1, variable resistor RS1 and switch IC1；
Variable resistor RS1 one end connects the output end VCC of power circuit, variable resistor RS1 other end connecting valve
IC1, the filtered electrical that switch IC1 connections first resistor R1, first resistor R1 connection is made up of 3rd resistor R3 and the first electric capacity C1
Road.
The input of filter circuit is that signal input part X, first resistor R1 and the first electric capacity C1 common port are input electricity
The output end on road.
Signal evaluation circuit also includes second resistance R2, the first diode D1, the 5th resistance R5, the 6th resistance R6, current potential
Device RS2, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10, the 11st resistance R11, the second diode
D2, the second electric capacity C2.
Second resistance R2 is connected with the first diode D1 positive pole, the first diode D1 positive pole and precision data detector
BDS3004 input connection, the output end of input circuit are connected with second resistance R2.
Precision data detector BDS3004 output end is anti-by the 5th resistance R5 the first operational amplifiers of connection IC2's
Phase input, the first operational amplifier IC2 in-phase input end are grounded by the 6th resistance R6 and potentiometer RS2, potentiometer RS2
It is also connected with the output end VCC of power circuit；Potentiometer RS2 is grounded.
First operational amplifier IC2 output end is same mutually defeated by the 7th resistance R7 the second operational amplifiers of connection IC3's
Enter end, the second operational amplifier IC3 in-phase input end is also connected with feedback circuit, and feedback circuit is by the second diode D2 and the 8th
Resistance R8 is in series.
Second operational amplifier IC3 output end connects the second diode D2 positive pole, and the second diode D2 negative pole connects
Connect the 8th resistance R8, the 8th resistance R8 the second operational amplifiers of connection IC3 in-phase input end.
Second operational amplifier IC3 inverting input is connected with the 9th resistance R9, the 9th resistance R9 ground connection；Second computing
Amplifier IC3 inverting input is connected the tenth resistance R10, the tenth resistance R10 ground connection with the 9th resistance R9 common port.
Second operational amplifier IC3 input is also grounded by the 11st resistance R11.
Second operational amplifier IC3 output end is also connected with the second electric capacity C2, the second electric capacity C2 ground connection.
Second operational amplifier IC3 and the second diode D2, the second electric capacity C2 common port are the defeated of signal evaluation circuit
Go out end.
The output end of input signal analysis circuit is connected with the 3rd diode D3 negative pole, and the 3rd diode D3 positive pole leads to
Cross the 4th resistance R4 connecting triodes Q1 base stage.
Triode Q1 emitter stage connecting luminous diode LED3 positive pole, the negative pole ground connection of LED 3.
Triode Q1 colelctor electrode passes through the output end VCC of relay T1 connection power circuits, relay T1 parallel connections the 4th
Diode D4.
Relay T1 provides normally-closed contact and normally opened contact K1, operating personnel can according to be actually needed selection normally-closed contact or
Normally opened contact.
In the alternative embodiment based on Fig. 1 or embodiment illustrated in fig. 3, this is used for the short-circuit protection of Equipment for Heating Processing
Also include reset circuit.
Reset circuit is connected with the in-phase input end of the second operational amplifier in input signal analysis circuit.
As shown in figure 3, reset circuit includes reset key SW1, the 12nd resistance R12, the 5th diode；D5.
Reset key SW1 one end is connected by the 12nd resistance R12 with the 5th diode D5 negative pole, reset key
SW1 other end connection power supply, the 5th diode D5 positive pole are connected with the second operational amplifier IC3 in-phase input end.
Optionally, power supply is+15V voltages.
When the short-circuit protection that this is used for Equipment for Heating Processing detects that with workpiece short circuit or sparking occur for Equipment for Heating Processing
When, the luminous alarm of LED 3 in output circuit, prompt operating personnel to be handled, operating personnel press reset by
After key SW1, LED 3 extinguishes, and alarm terminates.
It should be noted that：Above-mentioned the utility model embodiment sequence number is for illustration only, does not represent the quality of embodiment.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc., guarantor of the present utility model should be included in
Within the scope of shield.
Claims (6)
1. a kind of short-circuit protection for Equipment for Heating Processing, it is characterised in that the short-circuit protection comprises at least electricity
Source circuit, input circuit, input signal analysis circuit, output circuit；
The power circuit comprises at least rectifier bridge, voltage-stablizer, electric capacity；The output end of the power circuit and the input electricity
Road, the input signal analysis circuit, the output circuit connect respectively；
The input circuit includes signal input part, and the input signal end receives input signal；
The input signal analysis circuit includes precision data detector, the first operational amplifier and the second operational amplifier；
The output end of the input circuit is connected with the input of the precision data detector, the precision data detector
Output end is connected with the inverting input of first operational amplifier, described in the output end connection of first operational amplifier
The in-phase input end of second operational amplifier, the output end of second operational amplifier connect the input of the output circuit
End；
The output circuit includes diode, triode, light emitting diode and relay.
2. short-circuit protection according to claim 1, it is characterised in that the input circuit includes first resistor, the
Three resistance, the first electric capacity, variable resistor and switch；
The output end of variable resistor one end connection power circuit, the other end of the variable resistor connect the switch, institute
State switch connection first resistor, the filter circuit that the first resistor connection is made up of 3rd resistor and the first electric capacity；
The input of the filter circuit is signal input part, and the common port of the first resistor and the first electric capacity is the input
The output end of circuit.
3. short-circuit protection according to claim 1, it is characterised in that the signal evaluation circuit also includes the second electricity
Resistance, the first diode, the 5th resistance, the 6th resistance, potentiometer, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance,
11 resistance, the second diode, the second electric capacity；
The second resistance is connected with the positive pole of first diode, positive pole and the precision data of first diode
The input connection of detector, the output end of the input circuit are connected with the second resistance；
The output end of the precision data detector connects the anti-phase defeated of first operational amplifier by the 5th resistance
Enter end, the in-phase input end of first operational amplifier is grounded by the 6th resistance and the potentiometer, the current potential
Device is also connected with the output end of the power circuit；
The output end of first operational amplifier connects the same mutually defeated of second operational amplifier by the 7th resistance
Enter end, the in-phase input end of second operational amplifier is also connected with feedback circuit, and the feedback circuit is by the two or two pole
Pipe and the 8th resistant series are formed；
The inverting input of second operational amplifier is connected with the 9th resistance, the 9th resistance eutral grounding；Described
The inverting input of two operational amplifiers is connected the tenth resistance with the common port of the 9th resistance, and the tenth resistance connects
Ground；
The input of second operational amplifier also passes through the 11st resistance eutral grounding；
The output end of second operational amplifier is also connected with second electric capacity, second capacity earth；
Second operational amplifier is the signal evaluation circuit with second diode, the common port of second electric capacity
Output end.
4. short-circuit protection according to claim 1, it is characterised in that the output end of the input signal analysis circuit
It is connected with the negative pole of the 3rd diode, the positive pole of the 3rd diode connects the base stage of the triode by the 4th resistance；
The emitter stage of the triode connects the positive pole of the light emitting diode, the negative pole ground connection of the light emitting diode；
The colelctor electrode of the triode connects the output end of the power circuit by the relay, the relay parallel connection the
Four diodes.
5. short-circuit protection according to claim 1, it is characterised in that also including reset circuit；
The reset circuit includes reset key, the 12nd resistance, the 5th diode；
One end of the reset key is connected by the 12nd resistance with the negative pole of the 5th diode, and the reset is pressed
The other end connection power supply of key；
The positive pole of 5th diode is connected with the in-phase input end of second operational amplifier.
6. short-circuit protection according to any one of claims 1 to 5, it is characterised in that described in the power circuit
The input connection 220V AC powers of rectifier bridge；
The output end of the rectifier bridge connects the input of two voltage-stablizers；
Be connected with the 5th electric capacity between the input and earth terminal of first voltage-stablizer, the input and earth terminal of the second voltage-stablizer it
Between be connected with the 6th electric capacity；
5th electric capacity, the 6th electric capacity, the earth terminal difference of the earth terminal of first voltage-stablizer and the second voltage-stablizer
Ground connection；
The output end of first voltage-stablizer be the power circuit output end, the output end of first voltage-stablizer with it is described
The 7th electric capacity is connected between the earth terminal of first voltage-stablizer；8th electric capacity is connected in parallel on the both ends of the 7th electric capacity；Described
Seven electric capacity and the 8th electric capacity are grounded respectively；
The output end of second voltage-stablizer connects the 9th electric capacity and the tenth electric capacity, the tenth capacity earth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720833806.8U CN207067301U (en) | 2017-07-11 | 2017-07-11 | Short-circuit protection for Equipment for Heating Processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720833806.8U CN207067301U (en) | 2017-07-11 | 2017-07-11 | Short-circuit protection for Equipment for Heating Processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207067301U true CN207067301U (en) | 2018-03-02 |
Family
ID=61510738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720833806.8U Active CN207067301U (en) | 2017-07-11 | 2017-07-11 | Short-circuit protection for Equipment for Heating Processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207067301U (en) |
-
2017
- 2017-07-11 CN CN201720833806.8U patent/CN207067301U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200426 Address after: 214000 lakes in Jiangsu province Wuxi City foreshore Hudai Industrial Park No. 5 gave Zhang Patentee after: WUXI WANLING HIGH FREQUENCY EQUIPMENT MANUFACTURING Co.,Ltd. Address before: 214021, No. 62, D District, famous hi tech Industrial Park, Nanchang District, Jiangsu, Wuxi Patentee before: WUXI BONENG HEAT TREATMENT EQUIPMENT Co.,Ltd. |
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| TR01 | Transfer of patent right |