CN209375123U - A kind of thyristor protection relay - Google Patents
A kind of thyristor protection relay Download PDFInfo
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- CN209375123U CN209375123U CN201920237829.1U CN201920237829U CN209375123U CN 209375123 U CN209375123 U CN 209375123U CN 201920237829 U CN201920237829 U CN 201920237829U CN 209375123 U CN209375123 U CN 209375123U
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Abstract
The utility model discloses a kind of thyristor protection relays; it is arranged including cabinet, Input terminal block and output terminal; the Input terminal block and output terminal row are arranged at the rear portion of cabinet; it further include input module, output module and power module; the input module, output module and power module are arranged in cabinet; the input module is electrically connected at output module, and the power module provides+12V power supply and+6V power supply for input module and output module.A kind of thyristor protection relay of the utility model; it is mainly used to protect thyristor device; overcurrent protection load any one overload of the phase can rapid cutoff thyristor; it avoids thyristor and fastp-acting fuse from burning, reduces the cost consumption of valuable device, when thyristor exothermic temperature is excessively high; cutoff thyristor; it prevents that die temperature is excessively high and thyristor performance is caused to decline, to increase the risk of thyristor breakdown, reduce the waste of electric energy and the further expansion of failure.
Description
Technical field
The utility model relates to a kind of relay, in particular to a kind of thyristor protection relay.
Background technique
With being widely used for power electric component, thyristor component is generally used in terms of temperature control, to realize control
System, the purpose for adjusting temperature, and thyristor punctures two big principal elements then are as follows: overvoltage and overheat, overcurrent are substantially also
It was converted to thermal breakdown, when die temperature reaches 250 DEG C, once it is then silicon-controlled breakdown, then it is forever irreversible, with country
The raising of electric power network technique, power quality is more and more stable, reliable, therefore the probability of over-voltage breakdown is in only a few phenomenon；And mistake
Heat, overcurrent breakdown are then the main factor of thyristor breakdown, account for 95% or more of thyristor breakdown probability, therefore for crystalline substance
Brake tube overcurrent and thermal control excessively, then be the most important thing in thyristor protection, thus a kind of thyristor of the utility model
Protective relay can play the protection to power electronic devices such as thyristors very well.
Utility model content
Technical problem to be solved in the utility model is mainly achieved through the following technical solutions:
In one embodiment of the utility model, a kind of thyristor protection relay, including cabinet, Input terminal block and defeated
Terminal block out, the Input terminal block and output terminal row are arranged at the rear portion of cabinet, further include input module, output module
And power module, the input module, output module and power module are arranged in cabinet, the input module is electrically connected
In output module, the power module provides+12V power supply and+6V power supply, the input module for input module and output module
It is electrically connected at Input terminal block, the output module is electrically connected at output terminal row, and the input module includes the first fortune
It puts, the second amplifier, third amplifier, four high guaily unit, test button and reset button；The output module include the first triode,
Second triode and third transistor；The Input terminal block include U1 terminal, U2 terminal, U3 terminal, M terminal, Ki+ terminal,
Ki- terminal, N-terminal and L terminal；The output terminal row includes Ko+ terminal, Ko- terminal, LOc+ terminal, LOc- terminal, 1Ko
Terminal and 2Ko terminal.
In one embodiment of the utility model, the U1 terminal, U2 terminal, U3 terminal and M terminal are as three phase mains
The input port of sampled signal, the U1 terminal, U2 terminal and U3 terminal pass through diode and are electrically connected at the first amplifier
Normal phase input end, the normal phase input end and U1 terminal of first amplifier, U3 terminal, are become between M terminal U2 terminal by sliding
It hinders device to be electrically connected, the anti-phase input termination+6V power supply of first amplifier, first amplifier is by light emitting diode and instead
It is electrically connected to hold-off diode in third amplifier, four high guaily unit normal phase input end and the second triode, the 4th triode
Base stage, the light emitting diode indicates that the overcurrent signal lamp is arranged on cabinet panel as overcurrent signal lamp.
In one embodiment of the utility model, the third amplifier power end input+12V power supply, the third amplifier
Inverting input terminal input+6V power supply, the input terminal of the third amplifier is electrically connected at the base stage of the first triode, described
First transistor emitter and collector are electrically connected at K1 relay coil, and are also respectively connected in LOc- terminal and LOc+
Terminal, the K1 relay coil input+12V power supply, one group of normal open switch Ko+ terminal of the K1 relay and Ko- terminal are made
For warning output end；Second transistor emitter and collector are electrically connected at K2 relay coil, the K2 relay
One group of normal open switch 1Ko terminal is electrically connected at external over-current signal lamp.
In one embodiment of the utility model, the Ki+ terminal and Ki- terminal are inputted as temperature overheating moving together contact
End, by capacitance connection in the normal phase input end of the second amplifier between the Ki+ terminal and Ki- terminal, second amplifier
Reverse input end input+6V power supply, the second amplifier input terminal by light emitting diode be electrically connected in the second amplifier,
The normal phase input end of four high guaily unit and the first triode, third transistor base stage, the light emitting diode is as overtemperature signal lamp
Instruction, the overtemperature signal lamp are arranged on cabinet panel.
In one embodiment of the utility model, the inverting input terminal input+6V power supply of the four high guaily unit, the described 4th
Amplifier output end is connected to the 4th transistor base, and the collector of the 4th triode passes through panel signal lamp input+12V electricity
Source, the emitter ground connection of the 4th triode；The third transistor emitter and collector is electrically connected at K3 relay
One group of normal open switch 2Ko terminal of coil, the K3 relay is electrically connected at external overtemperature signal lamp.
In one embodiment of the utility model, the reset button and test button are electrically connected at input module,
The reset button and test button are arranged on cabinet panel.
Using above technical scheme, have following technical effect:
A kind of thyristor protection relay of the utility model, is mainly used to protect thyristor device, overcurrent protection exists
Load any one overload of the phase can rapid cutoff thyristor, avoid thyristor and fastp-acting fuse from burning, reduce valuable device at
This consumption, when thyristor exothermic temperature is excessively high, cutoff thyristor prevents die temperature excessively high and causes under thyristor performance
Drop reduces the waste of electric energy and the further expansion of failure to increase the risk of thyristor breakdown, in overcurrent protection and
In the case of two kinds of overheating protection, corresponding signal lamp can control to shine on cabinet panel, so that informing is overcurrent fault
Or overheating fault.
Detailed description of the invention
Such as the circuit theory schematic diagram that Fig. 1 is the utility model；
Such as the structural schematic diagram for the cabinet panel that Fig. 2 is the utility model.
1- input module；2- output module；3- power module；4- overcurrent signal lamp；5- overtemperature signal lamp；U1- first
Amplifier；The second amplifier of U2-；U3- third amplifier；U4- four high guaily unit；The first triode of Q1-；The second triode of Q2-；Q3- third
Triode；The 4th triode of Q4-；K4- reset button；K1P- test button.
Specific embodiment
In order to make the technological means of the utility model, create feature, reach purpose and effect is easy to understand, tie below
Conjunction is specifically illustrating, and furthers elucidate the utility model.
As shown in Figure 1, 2, a kind of thyristor protection relay, including cabinet, Input terminal block and output terminal row, it is described
Input terminal block and output terminal row are arranged at the rear portion of cabinet, further include input module 1, output module 2 and power module
3, the input module 1, output module 2 and power module 3 are arranged in cabinet, and the input module 1 is electrically connected at defeated
Module 2 out, the power module 3 are that input module 1 and output module 2 provide+12V power supply and+6V power supply, the input mould
Block 1 is electrically connected at Input terminal block, and the output module 2 is electrically connected at output terminal row, and the input module 1 includes the
One amplifier, the second amplifier, third amplifier, four high guaily unit, test button and reset button；The output module 2 includes the one or three
Pole pipe, the second triode and third transistor；The Input terminal block includes U1 terminal, U2 terminal, U3 terminal, M terminal, Ki+
Terminal, Ki- terminal, N-terminal and L terminal；The output terminal row includes Ko+ terminal, Ko- terminal, LOc+ terminal, the end LOc-
Son, 1Ko terminal and 2Ko terminal；The U1 terminal, the input of U2 terminal, U3 terminal and M terminal as three phase mains sampled signal
Port, the U1 terminal, U2 terminal and U3 terminal pass through the normal phase input end that diode is electrically connected at the first amplifier, described
The normal phase input end and U1 terminal of first amplifier, U3 terminal, pass through slide rheostat between M terminal and are electrically connected U2 terminal, institute
Anti-phase input termination+6V the power supply of the first amplifier is stated, first amplifier passes through light emitting diode and reversed hold-off diode point
It is not electrically connected at third amplifier, the base stage of four high guaily unit normal phase input end and the second triode, the 4th triode, it is described to shine
Diode indicates that the overcurrent signal lamp 4 is arranged on cabinet panel as overcurrent signal lamp 4；The third amplifier electricity
The input terminal of source input+12V power supply, the inverting input terminal input+6V power supply of the third amplifier, the third amplifier is electrical
It is connected to the base stage of the first triode, first transistor emitter and collector are electrically connected at K1 relay coil, and
And it is also respectively connected in LOc- terminal and LOc+ terminal, the K1 relay coil input+12V power supply, the K1 relay one
Group normal open switch Ko+ terminal and Ko- terminal are as warning output end；Second transistor emitter and collector are electrically connected
In K2 relay coil, one group of normal open switch 1Ko terminal of the K2 relay is electrically connected at external over-current signal lamp；It is described
Ki+ terminal and Ki- terminal are connected between the Ki+ terminal and Ki- terminal by capacitor as temperature overheating moving together contact input terminal
It is connected to the normal phase input end of the second amplifier, the reverse input end input+6V power supply of second amplifier, the second amplifier input
End is electrically connected by light emitting diode in the normal phase input end and the first triode, third of the second amplifier, four high guaily unit
Transistor base, the light emitting diode indicate that the overtemperature signal lamp 5 is arranged on cabinet panel as overtemperature signal lamp 5；
Inverting input terminal input+6V the power supply of the four high guaily unit, the four high guaily unit output end are connected to the 4th transistor base, institute
The collector of the 4th triode is stated by panel signal lamp input+12V power supply, the emitter of the 4th triode is grounded；Institute
It states third transistor emitter and collector and is electrically connected at K3 relay coil, one group of normal open switch of the K3 relay
2Ko terminal is electrically connected at external overtemperature signal lamp；The reset button and test button are electrically connected at input module, institute
It states reset button and test button is arranged on cabinet panel.
When utility model works, the three-phase four-wire power that U1 terminal, U2 terminal, U3 terminal and the access of M terminal load is brilliant
Brake tube die temperature sensor accesses Ki+ terminal and Ki- terminal, 220V plant-grid connection N-terminal and L terminal, at this moment, if arbitrarily
One overload of the phase, K1 relay and K2 relay are attracted, and Ko+ terminal and Ko- terminal then issue overcurrent protection movement, LOc- terminal
Thyristor is turned off with LOc+ terminal, overcurrent signal lamp 4 lights simultaneously；Temperature relay is loaded on thyristor radiator, when
When fan temperature is excessively high or environment temperature is excessively high, when radiator temperature reaches 80 degrees Celsius, temperature relay contact closure is defeated
Enter to Ki+ terminal and Ki- terminal, by the signal processing of the second amplifier and third transistor, K3 relay is attracted, overtemperature signal
Lamp 5 lights, and simultaneously turns off thyristor.
A kind of thyristor protection relay of the utility model, is mainly used to protect thyristor device, overcurrent protection exists
Load any one overload of the phase can rapid cutoff thyristor, avoid thyristor and fastp-acting fuse from burning, reduce valuable device at
This consumption, when thyristor exothermic temperature is excessively high, cutoff thyristor prevents die temperature excessively high and causes under thyristor performance
Drop reduces the waste of electric energy and the further expansion of failure to increase the risk of thyristor breakdown, in overcurrent protection and
In the case of two kinds of overheating protection, corresponding signal lamp can control to shine on cabinet panel, so that informing is overcurrent fault
Or overheating fault.
The foregoing describe the basic principles and main features of the utility model, It should be understood by those skilled in the art that this
Utility model is not restricted to the described embodiments, and the above embodiments and description only describe the originals of the utility model
Reason, on the premise of not departing from the spirit and scope of the utility model, the utility model also has various changes and improvements, these changes
Change and improvement is fallen within the scope of the claimed invention, range is claimed by the attached claims in utility model
Book and its equivalent thereof.
Claims (6)
1. a kind of thyristor protection relay, including cabinet, Input terminal block and output terminal row, the Input terminal block and defeated
Terminal block is arranged at the rear portion of cabinet out, which is characterized in that and it further include input module, output module and power module, it is described
Input module, output module and power module are arranged in cabinet, and the input module is electrically connected at output module, described
Power module provides+12V power supply and+6V power supply for input module and output module, and the input module is electrically connected at input
Terminal block, the output module are electrically connected at output terminal row, and the input module includes the first amplifier, the second amplifier, the
Three amplifiers, four high guaily unit, test button and reset button；The output module includes the first triode, the second triode and the
Three triodes；The Input terminal block include U1 terminal, U2 terminal, U3 terminal, M terminal, Ki+ terminal, Ki- terminal, N-terminal and
L terminal；The output terminal row includes Ko+ terminal, Ko- terminal, LOc+ terminal, LOc- terminal, 1Ko terminal and 2Ko terminal.
2. a kind of thyristor protection relay according to claim 1, which is characterized in that the U1 terminal, U2 terminal, U3
The input port of terminal and M terminal as three phase mains sampled signal, the U1 terminal, U2 terminal and U3 terminal pass through two poles
Pipe is electrically connected at the normal phase input end of the first amplifier, the normal phase input end and U1 terminal of first amplifier, U2 terminal, the end U3
It is electrically connected between son, M terminal by slide rheostat, the anti-phase input termination+6V power supply of first amplifier, described first
Amplifier by light emitting diode and reversed hold-off diode be electrically connected in third amplifier, four high guaily unit normal phase input end and
The base stage of second triode, the 4th triode, the light emitting diode is as the instruction of overcurrent signal lamp, the overcurrent signal
Lamp is arranged on cabinet panel.
3. a kind of thyristor protection relay according to claim 2, which is characterized in that the third amplifier power end is defeated
Enter+12V power supply, the inverting input terminal input+6V power supply of the third amplifier, the input terminal of the third amplifier is electrically connected at
The base stage of first triode, first transistor emitter and collector are electrically connected at K1 relay coil, and also divide
It is not connected to LOc- terminal and LOc+ terminal, the K1 relay coil input+12V power supply, one group of the K1 relay is normally opened
Switch Ko+ terminal and Ko- terminal are as warning output end；Second transistor emitter and collector be electrically connected at K2 after
Electric apparatus coil, one group of normal open switch 1Ko terminal of the K2 relay are electrically connected at external over-current signal lamp.
4. a kind of thyristor protection relay according to claim 1, which is characterized in that the Ki+ terminal and Ki- terminal
As temperature overheating moving together contact input terminal, between the Ki+ terminal and Ki- terminal by capacitance connection in the second amplifier just
Phase input terminal, the reverse input end input+6V power supply of second amplifier, the second amplifier input terminal pass through light emitting diode
It is electrically connected in the second amplifier, the normal phase input end of four high guaily unit and the first triode, third transistor base stage, the hair
Optical diode indicates that the overtemperature signal lamp is arranged on cabinet panel as overtemperature signal lamp.
5. a kind of thyristor protection relay according to claim 4, which is characterized in that the reverse phase of the four high guaily unit is defeated
Enter to hold input+6V power supply, the four high guaily unit output end is connected to the 4th transistor base, the collector of the 4th triode
By panel signal lamp input+12V power supply, the emitter of the 4th triode is grounded；The third transistor emitter and
Collector is electrically connected at K3 relay coil, and one group of normal open switch 2Ko terminal of the K3 relay is electrically connected at outside
Overtemperature signal lamp.
6. a kind of thyristor protection relay according to claim 1, which is characterized in that the reset button and test are pressed
Button is electrically connected at input module, and the reset button and test button are arranged on cabinet panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920237829.1U CN209375123U (en) | 2019-02-26 | 2019-02-26 | A kind of thyristor protection relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920237829.1U CN209375123U (en) | 2019-02-26 | 2019-02-26 | A kind of thyristor protection relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209375123U true CN209375123U (en) | 2019-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920237829.1U Active CN209375123U (en) | 2019-02-26 | 2019-02-26 | A kind of thyristor protection relay |
Country Status (1)
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| CN (1) | CN209375123U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109842098A (en) * | 2019-02-26 | 2019-06-04 | 王大进 | A kind of thyristor protection relay |
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2019
- 2019-02-26 CN CN201920237829.1U patent/CN209375123U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109842098A (en) * | 2019-02-26 | 2019-06-04 | 王大进 | A kind of thyristor protection relay |
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