CN208478147U - A kind of capacitor with pressure alarm - Google Patents
A kind of capacitor with pressure alarm Download PDFInfo
- Publication number
- CN208478147U CN208478147U CN201821152437.7U CN201821152437U CN208478147U CN 208478147 U CN208478147 U CN 208478147U CN 201821152437 U CN201821152437 U CN 201821152437U CN 208478147 U CN208478147 U CN 208478147U
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- capacitor
- resistance
- varistor
- epoxy resin
- operational amplifier
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Abstract
The utility model discloses a kind of capacitors with pressure alarm; it include: capacitor core, protection shell; warning circuit; the capacitor core is located at the inside of protection shell; it is filled with epoxy resin layer between the capacitor core and protection shell, is embedded with varistor in the epoxy resin layer, the varistor is connect with the warning circuit; the increase of epoxy resin stressor layer can be detected in the varistor, and triggers warning circuit and generate alarm signal.Using the varistor being embedded in epoxy resin layer, the pressure conversion that capacitor core deformation is generated is electric signal, and carries out warning note by triggering warning circuit and protect capacitor to effectively detect capacitor core deformation.The utility model creation can be used in power capacitor field.
Description
Technical field
The utility model relates to power capacitor technical field, in particular to a kind of capacitor with pressure alarm.
Background technique
Existing power capacitor generally comprises capacitor core, protects shell, existing in order to improve the leakproofness of capacitor
Some power capacitors can fill epoxy resin layer between capacitor core and protection shell, but in this way since, work as capacitor
Core is then difficult to be found, so that the deformation of capacitor core aggravates, influences the use of capacitor when deformation occurs.
Therefore, how detecting capacitor core in time, deformation occurs as industry interior the problem of paying close attention to.
Utility model content
The purpose of this utility model is: providing a kind of detectable capacitor core deformation, and the capacitor alarmed.
The solution that the utility model solves its technical problem is: a kind of capacitor with pressure alarm, comprising: electricity
Container core, protection shell, warning circuit, the capacitor core are located at the inside of protection shell, and the capacitor core and protection are outer
It is filled with epoxy resin layer between shell, varistor, the varistor and the alarm are embedded in the epoxy resin layer
Circuit connection, the varistor are used to detect the increase of epoxy resin stressor layer, and trigger warning circuit and generate alarm signal
Number.
Further, the warning circuit includes: resistance R1, R2, R3, R4, operational amplifier U1, triode Q1, indicator light,
The inverting input terminal with operational amplifier U1, one end of varistor connect respectively for one end of resistance R1, operational amplifier U1's
One end with resistance R4, one end of resistance R3 connect non-inverting input terminal respectively, the output end and triode Q1 of operational amplifier U1
Base stage connection, the cathode of the collector of triode Q1 and indicator light connects, and the anode of indicator light is connect with one end of resistance R2,
The emitter of triode Q1, the other end of resistance R4, the other end of varistor connect over the ground respectively, the other end of resistance R1,
The other end of the other end of resistance R2, resistance R3 distinguishes external power supply VCC.
Further, the model LM741 of the operational amplifier U1.
Further, the indicator light is light emitting diode.
The beneficial effects of the utility model are: using the varistor being embedded in epoxy resin layer, by capacitor core shape
Selling of one's property raw pressure conversion is electric signal, and carries out warning note by triggering warning circuit, to effectively detect capacitor
Device core deformation, protects capacitor.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described.Obviously, described attached drawing is a part of the embodiment of the utility model, rather than complete
Portion's embodiment, those skilled in the art without creative efforts, can also be obtained according to these attached drawings it
His design scheme and attached drawing.
Fig. 1 is the structural schematic diagram of the capacitor of the invention；
Fig. 2 is the circuit connection diagram of warning circuit.
Specific embodiment
It is carried out below with reference to technical effect of the embodiment and attached drawing to the design of the utility model, specific structure and generation
It clearly and completely describes, to be completely understood by the purpose of this utility model, feature and effect.Obviously, described embodiment
It is a part of the embodiment of the utility model, rather than whole embodiments, it is based on the embodiments of the present invention, the skill of this field
Art personnel other embodiments obtained without creative efforts belong to the model of the utility model protection
It encloses.In addition, all connection/connection relationships being previously mentioned in text, not singly refer to that component directly connects, and referring to can be according to specific reality
Situation is applied, by adding or reducing couple auxiliary, to form more preferably coupling structure.Each technology in the invention is special
Sign, can be with combination of interactions under the premise of not conflicting conflict.
Embodiment 1, with reference to Fig. 1, a kind of capacitor with pressure alarm, comprising: capacitor core 1, protection shell 2, report
Alert circuit, the capacitor core 1 are located at the inside of protection shell 2, are filled with ring between the capacitor core 1 and protection shell 2
Oxygen resin layer 3 is embedded with varistor 31 in the epoxy resin layer 3.
With reference to Fig. 2, the warning circuit includes: resistance R1, R2, R3, R4, operational amplifier U1, triode Q1, indicator light
4, the inverting input terminal with operational amplifier U1, one end of varistor 31 connect respectively for one end of resistance R1, operational amplifier
One end with resistance R4, one end of resistance R3 connect the non-inverting input terminal of U1 respectively, the output end of operational amplifier U1 and three poles
The base stage of pipe Q1 connects, and the collector of triode Q1 is connect with the cathode of indicator light 4, the anode of indicator light 4 and the one of resistance R2
End connection, the emitter of triode Q1, the other end of resistance R4, the other end of varistor 31 connect over the ground respectively, resistance R1
The other end, the other end of resistance R2, the other end of resistance R3 distinguishes external power supply VCC.
When deformation occurs for capacitor core 1, epoxy resin layer 3 is oppressed, pressure is transmitted to varistor by epoxy resin layer 3
On 31, so that the resistance value of varistor 31 is reduced, resistance R3 and resistance R4 form bleeder circuit, when varistor 31
When resistance value is reduced, the electricity of inverting input terminal of the voltage value greater than operational amplifier U1 of the non-inverting input terminal of operational amplifier U1
The output end of pressure value, operational amplifier U1 exports high level, which acts on triode Q1, so that triode Q1 is led
It is logical, indicator light 4 is lighted, to indicate that capacitor core 1 has occurred and that deformation.
The invention is using the varistor 31 being embedded in epoxy resin layer 3, the pressure that 1 deformation of capacitor core is generated
Power is converted to electric signal, and carries out warning note by triggering warning circuit, thus effectively detect 1 deformation of capacitor core,
Protect capacitor.
As advanced optimizing for above embodiment, the model LM741 of the operational amplifier U1.
As advanced optimizing for above embodiment, the indicator light 4 is light emitting diode.
The better embodiment of the utility model is illustrated above, but the invention be not limited to it is described
Embodiment, those skilled in the art can also make various equivalent changes without departing from the spirit of the present invention
Type or replacement, these equivalent variation or replacement are all included in the scope defined by the claims of the present application.
Claims (4)
1. a kind of capacitor with pressure alarm, comprising: capacitor core, protection shell, it is outer that the capacitor core is located at protection
The inside of shell is filled with epoxy resin layer between the capacitor core and protection shell, which is characterized in that further includes alarm electricity
Road is embedded with varistor in the epoxy resin layer, and the varistor is connect with the warning circuit, the varistor
For detecting the increase of epoxy resin stressor layer, and triggers warning circuit and generate alarm signal.
2. a kind of capacitor with pressure alarm according to claim 1, which is characterized in that the warning circuit packet
Include: resistance R1, R2, R3, R4, operational amplifier U1, triode Q1, indicator light, one end of resistance R1 respectively with operational amplifier
The inverting input terminal of U1, one end connection of varistor, the non-inverting input terminal of operational amplifier U1 one end with resistance R4 respectively,
One end of resistance R3 connects, and the output end of operational amplifier U1 is connect with the base stage of triode Q1, the collector of triode Q1 and
The cathode of indicator light connects, and the anode of indicator light is connect with one end of resistance R2, and the emitter of triode Q1, resistance R4's is another
End, the other end of varistor connect over the ground respectively, the other end of resistance R1, the other end of resistance R2, the other end of resistance R3
External power supply VCC respectively.
3. a kind of capacitor with pressure alarm according to claim 2, which is characterized in that the operational amplifier U1
Model LM741.
4. a kind of capacitor with pressure alarm according to claim 2, which is characterized in that the indicator light is luminous
Diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821152437.7U CN208478147U (en) | 2018-07-19 | 2018-07-19 | A kind of capacitor with pressure alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821152437.7U CN208478147U (en) | 2018-07-19 | 2018-07-19 | A kind of capacitor with pressure alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208478147U true CN208478147U (en) | 2019-02-05 |
Family
ID=65211613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821152437.7U Active CN208478147U (en) | 2018-07-19 | 2018-07-19 | A kind of capacitor with pressure alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208478147U (en) |
-
2018
- 2018-07-19 CN CN201821152437.7U patent/CN208478147U/en active Active
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