CN110233012A - Varistor and its Surge Protector with self-checking function - Google Patents
Varistor and its Surge Protector with self-checking function Download PDFInfo
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- CN110233012A CN110233012A CN201910661352.4A CN201910661352A CN110233012A CN 110233012 A CN110233012 A CN 110233012A CN 201910661352 A CN201910661352 A CN 201910661352A CN 110233012 A CN110233012 A CN 110233012A
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- varistor
- temperature
- self
- checking function
- discoloration
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- 230000001012 protector Effects 0.000 title claims abstract description 33
- 238000002845 discoloration Methods 0.000 claims abstract description 54
- 230000008859 change Effects 0.000 claims abstract description 23
- 238000012546 transfer Methods 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 56
- 238000000576 coating method Methods 0.000 claims description 40
- 239000011248 coating agent Substances 0.000 claims description 38
- 239000011241 protective layer Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 2
- 230000006378 damage Effects 0.000 abstract description 35
- 230000007547 defect Effects 0.000 abstract description 4
- 230000006870 function Effects 0.000 description 45
- 230000002427 irreversible effect Effects 0.000 description 19
- 230000009471 action Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
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- 238000012423 maintenance Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
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- -1 oxidations Object Chemical compound 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 208000025274 Lightning injury Diseases 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910003206 NH4VO3 Inorganic materials 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Natural products OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 125000000751 azo group Chemical group [*]N=N[*] 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
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- 230000036760 body temperature Effects 0.000 description 1
- 229960001506 brilliant green Drugs 0.000 description 1
- HXCILVUBKWANLN-UHFFFAOYSA-N brilliant green cation Chemical compound C1=CC(N(CC)CC)=CC=C1C(C=1C=CC=CC=1)=C1C=CC(=[N+](CC)CC)C=C1 HXCILVUBKWANLN-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 239000011651 chromium Substances 0.000 description 1
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- 229910052742 iron Inorganic materials 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
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- 239000011701 zinc Substances 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/04—Arrangements of distinguishing marks, e.g. colour coding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/16—Resistor networks not otherwise provided for
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/041—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using a short-circuiting device
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The present invention relates to protection technical field of electric appliances, in particular to varistor and its Surge Protector with self-checking function, the varistor with self-checking function includes varistor ontology and at least one discoloration member, the discoloration member is connect with the varistor ontology heat transfer, the discoloration member heat discoloration, the temperature conditions of marking pressure sensitive resistor main body, so that when the temperature change of varistor, the discoloration member color changes, realize the self-checking function of varistor, the case where making staff judge varistor heat damage according to the situation of change of discoloration member color, realize the timely replacement to the varistor after heat damage, guarantee the normal use of the Surge Protector using the above-mentioned varistor with self-checking function, cutting circuit in time, have the function that temperature control is protected, it overcomes the prior art and realizes failure using mechanical The defect of instruction, failure rate is lower, improves the safety in utilization of Surge Protector.
Description
Technical field
The present invention relates to protection technical field of electric appliances, in particular to varistor and its surge protection with self-checking function
Device.
Background technique
Varistor is a kind of resistance device with nonlinear wind vibration, is used frequently as over-voltage protector, when
When bearing over-voltage energy, constant temperature rises varistor, and when reaching the power limit of varistor, varistor occurs
Heat damage fault condition could continue to play a protective role after being replaced.
But existing varistor itself can not show heat damage situation, after leading to varistor heat damage, use
Person cannot timely have found and replace varistor, influence the protection to the Sensitive Apparatus using varistor.
It is just generally provided with varistor in existing Surge Protector, existing Surge Protector generally passes through mechanical knot
The hot releasing mechanism of structure is used to indicate the signal that is out of order, the hot releasing mechanism pass through apply pressure to by solder weld conductive plate and
Euthermic chip makes when euthermic chip generates heat, and melts the solder between conductive plate, and euthermic chip and conductive plate are detached from, and passes through
The movement of the resilient push component of mechanical structure indicates fault-signal.
But due to, since the factors such as scolding tin wire drawing adhesion influence, being easy between conductive plate and euthermic chip leading foot
It is now detached from halfway situation, the resilient push component of mechanical structure in Surge Protector is caused not indicate accurately and timely
Failure, and if the varistor of heat damage cannot be replaced timely, it is not only easy to cause the damage of Surge Protector, but also
It is easy to cause the safety accidents such as fire.
So needing to design one kind at present can accurately, timely show that the varistor of heat damage situation and surge are protected
Protect device.
Summary of the invention
It is an object of the invention to: existing varistor and Surge Protector above shortcomings are directed to, band is provided
The varistor and its Surge Protector of self-checking function.
To achieve the goals above, the technical solution adopted by the present invention are as follows:
Varistor with self-checking function, including varistor ontology and at least one discoloration member, the discoloration member and the pressure
Quick resistor main body heat transfer connection, the discoloration member heat discoloration, the temperature conditions of marking pressure sensitive resistor main body.
Varistor with self-checking function of the invention has the discoloration member and pressure-sensitive electricity of temperature-sensing discoloration function by being arranged
Thermal resistance conduction connection, so that the discoloration member color changes when the temperature change of varistor, realizes varistor
Self-checking function, the case where making staff judge varistor heat damage according to the situation of change of discoloration member color, are realized to heat
The protection of the Sensitive Apparatus to the varistor using the structure is realized in the timely replacement of varistor after destruction.
As a preferred solution of the present invention, the discoloration member includes temperature-sensing color-changing material coating.By using printing or apply
The mode covered forms temperature-sensing color-changing material coating as discoloration member, is easier to the setting of discoloration member, facilitates the pressure-sensitive of the structure
The preparation of resistance makes varistor adstante febre, the temperature-sensing color-changing material coating position for connecting or contacting with varistor heat transfer
Color change, realize the self-checking function of varistor.
As a preferred solution of the present invention, the temperature-sensing color-changing material is irreversible temperature-sensing color-changing material.It is described irreversible
Temperature-sensing color-changing material is that color changes after being heated to certain temperature, and color cannot be restored also not occur in cooling procedure
Irreversible physical change and chemistry has occurred in the temperature-sensing color-changing material of variation, irreversible temperature-sensing color-changing material in temperature-rise period
Variation, produces novel substance, realizes the irreversible of its color, since its color change is irreversible, so that using should
The varistor of irreversible temperature-sensing color-changing material can it bore by memory for color maximum temperature, further facilitate work
Personnel judge the heat damage situation of varistor according to the variation of color, can be selected according to the heat damage limiting temperature of varistor
Proper temperature, irreversible temperature-sensing color-changing material that color is suitable, realize the varistor to different model, different operating environment
Self-checking function adaptation.
As a preferred solution of the present invention, the temperature-sensing color-changing material coating be one of text, pattern or figure or
It is a variety of.One or more temperature-sensing color-changing materials can be set for the same varistor according to the actual use situation of varistor
The discoloration member of coating, when the discoloration member of a variety of temperature-sensing color-changing material coatings is arranged for the same varistor, each temperature-sensitive
The discoloring temperature or photochromic color of discoloration coating may be configured as difference, can also according to the actual situation, using by temperature-sensing color-changing material
Coating is applied to one of text, pattern or figure or a variety of, so that not only realizing oneself of varistor from color change
Checking functions, additionally it is possible to from the self-checking function for realizing varistor in shape of the coating after discoloration, make more eye-catching for the people that works
Member provides the foundation for judging varistor heat damage situation.
As a preferred solution of the present invention, protective layer is provided on the temperature-sensing color-changing material coating.Pass through protective layer pair
The discoloration member of temperature-sensing color-changing material coating plays protective action and heat-blocking action, avoids temperature-sensing color-changing material coating by external environment
It influences and changes colour, it is ensured that the authenticity and accuracy of the self-checking function of varistor.
As a preferred solution of the present invention, the temperature-sensing color-changing material coating is arranged in varistor body surface.Make to feel
Warm off-color material coating is directly contacted with varistor ontology, is tightly attached to varistor, is timely occurred after being heated
Discoloration, indicates the heat damage situation of varistor.
As a preferred solution of the present invention, the discoloration member further include led with the varistor ontology it is hot linked thermally conductive
Piece is provided with the temperature-sensing color-changing material coating on the thermally conductive sheet.Varistor fever heat is conducted by using thermally conductive sheet,
The discoloration instruction for realizing temperature-sensing color-changing material coating is avoided due to varistor in extreme circumstances, since internal high power damages
Consumption and can not be by self-convection dissipation heat the case where, make inside the varistor directly by heat heat exchange to thermally conductive sheet
On, realize thermally conductive sheet on temperature-sensing color-changing material coating instruction, further ensure that the self-checking function of varistor accuracy and
Timeliness.
As a preferred solution of the present invention, when the quantity of the discoloration member is two or more, two discoloration members
Photochromic color and/or discoloring temperature and/or shape are different.Can according to the actual situation, adjust the specific structure of discoloration member, color,
The relevant parameters such as different discoloring temperatures adapt to the setting of discoloration member and the self structure of varistor, working environment etc., into one
Step ensures the accuracy and timeliness of the self-checking function of varistor.
As a preferred solution of the present invention, the varistor ontology heat transfer is connected with temperature sensing element.The temperature sensitive member
Part is for issuing fault-signal when varistor body temperature is increased to the operating temperature of temperature sensing element, when temperature sensing element connects
When having control circuit, the temperature sensing element is timely to issue fault-signal using the control circuit of varistor, is prompted pressure-sensitive
Resistance heat damage situation can also be achieved the protection to Sensitive Apparatus, make when corresponding control circuit is acted according to the fault-signal
The varistor of the structure not only has the function of showing heat damage situation in time also have the function of prompt protection Sensitive Apparatus
Energy.
Surge Protector, including shell are provided at least one as described above with the pressure of self-checking function in the shell
Quick resistance.
Surge Protector of the invention makes it possible to timely by using the above-mentioned varistor with self-checking function
Realize that the real-time self-test to varistor monitors by the color change of the discoloration member of varistor, the pressure after being conducive to heat damage
The timely replacement of quick resistance guarantees the normal use of Surge Protector, meanwhile, when being connected in Surge Protector using above-mentioned
When the varistor of temperature sensing element, the temperature sensing element is connect with thermally conductive sheet heat transfer, and is connect with the intracorporal temperature detect switch (TDS) of shell,
So that be the temperature detect switch (TDS) sending action signal in Surge Protector by temperature sensing element, when making varistor heat damage, temperature control
Timely break contact, cutting circuit have the function that temperature control is protected to switch, overcome the prior art using mechanical and realize failure
The defect of instruction, failure rate is lower, improves the safety in utilization of Surge Protector, in addition, can according to the actual situation, it will be temperature sensitive
Element connects latching circuit, so that triggering temperature sensing element by way of heat transfer after varistor heat damage and generating surge
The action signal that protector circuit disconnects, and pass through the locking after latching circuit realization temperature sensing element recovery to circuit off-state
And maintenance, it is further ensured that the safe handling of Surge Protector.
In conclusion by adopting the above-described technical solution, the beneficial effect of the varistor of the invention with self-checking function
Fruit is:
1, by being arranged there is the discoloration member of temperature-sensing discoloration function to connect with varistor heat transfer, so that working as the temperature of varistor
When degree variation, the discoloration member color changes, and realizes the self-checking function of varistor, makes staff according to discoloration member face
The situation of change of color judges the case where varistor heat damage, realizes the timely replacement to the varistor after heat damage, realizes
Protection to the Sensitive Apparatus of the varistor using the structure.
The beneficial effect of Surge Protector of the invention is:
1, by using the above-mentioned varistor with self-checking function, make it possible to timely through the discoloration member of varistor
Color change realizes that the real-time self-test to varistor monitors, and the timely replacement of the varistor after being conducive to heat damage guarantees
The normal use of Surge Protector；
2, when using the above-mentioned varistor for being connected with temperature sensing element in Surge Protector, the temperature sensing element and thermally conductive sheet
Heat transfer connection, and connect with the intracorporal temperature detect switch (TDS) of shell, so that being the temperature detect switch (TDS) in Surge Protector by temperature sensing element
Action signal is issued, when making varistor heat damage, timely break contact, cutting circuit reach temperature control protection to temperature detect switch (TDS)
Effect, overcome the prior art using the mechanical defect for realizing indicating fault, failure rate is lower, improves Surge Protector
Safety in utilization；
3, temperature sensing element can be connected into latching circuit according to the actual situation, so that passing through heat transfer after varistor heat damage
Mode trigger temperature sensing element and generate the action signal that Surge Protector circuit disconnects, and temperature sensing element is realized by latching circuit
To the locking and maintenance of circuit off-state after recovery, it is further ensured that the safe handling of Surge Protector.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the varistor with self-checking function of embodiment 1；
Fig. 2 is the structural schematic diagram of the varistor with self-checking function of embodiment 2；
Fig. 3 is the structural schematic diagram of the varistor with self-checking function of embodiment 3；
Fig. 4 is the structural schematic diagram of the Surge Protector of embodiment 4.
Appended drawing reference
1- varistor ontology, 2- discoloration member, 3- temperature-sensing color-changing material coating, 4- protective layer, 5- thermally conductive sheet, 6- temperature sensing element,
7- shell, 8- indication window, 9- temperature detect switch (TDS).
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing and specific implementation
Example, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only to explain this hair
It is bright, it is not intended to limit the present invention.
Embodiment 1
As shown in Figure 1, the varistor with self-checking function, including varistor ontology 1 and at least one discoloration member 2, the change
Colour solid 2 includes temperature-sensing color-changing material coating 3, and the temperature-sensing color-changing material is irreversible temperature-sensing color-changing material, the heat discoloration
Material coating 3 is arranged on 1 surface of varistor ontology, connect with 1 heat transfer of varistor ontology, and the discoloration member 2 is felt
Temperature discoloration, the temperature conditions of marking pressure sensitive resistor main body 1.
The varistor with self-checking function of the present embodiment, it is preferred to use irreversible sense is coated on varistor ontology 1
Warm off-color material is directly contacted with varistor ontology 1, forms temperature-sensing color-changing material coating 3, when varistor ontology 1 continues
When fever reaches the discoloring temperature of irreversible temperature-sensing color-changing material, the temperature-sensing color-changing material coating 3 generates color change, instruction
The heat damage situation of varistor, realizes the self-checking function of varistor, though instruction staff according to color change more
Varistor is changed, realizes the protection of the Sensitive Apparatus to the varistor using the structure, irreversible temperature-sensing color-changing material type
Various, there are commonly the phosphate of lead, manganese, chromium, zinc, iron, cobalt, nickel, cadmium, strontium, magnesium, barium, molybdenum etc., sulfate, nitrate, oxidations
Object, sulfide and crystal violet, oxybenzene compound, Emathlite, azo pigments, arylmethane pigment etc., heat discoloration model
It encloses generally between 30~1200 DEG C, for example, NiNH4 PO4·6H2For O when 120 DEG C heated, color becomes grey blue from brilliant green,
For NH4VO3 when 150 DEG C heated, color is palm fibre, Cd (OH) by leucismus 2When 200 DEG C heated, color is Huang by leucismus,
Fe4[ Fe (CN)6?2When 250 DEG C heated, color is palm fibre, Pb CO by xanthochromia3When 290 DEG C heated, color is Huang by leucismus,
Co C2 O4When 300 DEG C heated, color becomes black from powder, temperature can be selected suitable according to the heat damage limiting temperature of varistor
The irreversible temperature-sensing color-changing material suitable, color is suitable, realizes the self-test to the varistor of different model, different operating environment
The adaptation of function.
Further, the present embodiment is in a manner of using silk-screen printing, the irreversible sense for being 300 DEG C by temperature change value
Warm off-color material is printed on varistor ontology 1, is formed for 2 structure of discoloration member, the original state of the coating be it is colourless, when
When temperature reaches 300 DEG C, irreversible temperature-sensing color-changing material discoloration is black, so that when varistor is warm due to lightning stroke etc.
When degree is more than 300 DEG C, chemical reaction, which occurs, for the irreversible temperature-sensing color-changing material coating 3 on 1 surface of varistor ontology becomes black,
It indicates varistor damage, realizes the self-checking function of varistor, staff is prompted to be replaced in time.
Preferably, the temperature-sensing color-changing material coating 3 is one of text, pattern or figure or a variety of.The present embodiment
It is applied it is preferred that the text style for printing such as " failure " on varistor ontology 1 by the way of printing forms temperature-sensing color-changing material
Layer 3, makes after varistor heat damage, indicates varistor heat damage situation, but also from color change not only with text shape
The more eye-catching instruction staff of the form of shape replaces varistor, keeps the replacement of varistor more timely.
Further, the present embodiment is arranged with different discoloring temperatures, no preferably on the same varistor ontology 1
Multiple mutually independent irreversible temperature-sensing color-changing material coatings 3 of same photochromic color, different shape structure.Become irreversible temperature-sensitive
The setting of color material coating 3 and self structure, the working environment of varistor etc. adapt to, better adaptability, and can be by not
Realize that the interim self-test to varistor temperature change monitors with the corresponding discoloring temperature of temperature-sensing color-changing material and photochromic color,
The accuracy and timeliness of the self-checking function of varistor are further ensured that, specifically, it is preferred that being arranged on varistor ontology
150 DEG C, 200 DEG C, 250 DEG C, 300 DEG C of four colour circles or colour band, so that when the temperature change of varistor ontology 1, corresponding temperature
The colour circle or colour band of degree can be shown, so that the successively variation by colour circle or colour band obtains what varistor ontology 1 reached
Maximum temperature value.
Preferably, protective layer 4 is provided on the temperature-sensing color-changing material coating 3.The present embodiment is preferably in heat discoloration material
Expect to smear one layer of protection oil on coating 3, avoids coating from falling, protective action is played to temperature-sensing color-changing material coating 3, meanwhile, prevent
Sheath 4 has certain heat-blocking action, and the variation of ambient temperature is on the one hand avoided to influence the face of temperature-sensing color-changing material coating 3
On the other hand the heat that varistor ontology 1 distributes also is limited within protective layer 4 by color change, apply with temperature-sensing color-changing material
3 thermal conduction effect of layer are more preferable, further ensure that the authenticity and accuracy of the self-checking function of varistor.
Embodiment 2
As shown in Figs. 1-2, the varistor with self-checking function of the present embodiment, structure is same as Example 1, and difference is: institute
Stating discoloration member 2 further includes that hot linked thermally conductive sheet 5 is led with the varistor ontology 1, is provided with the sense on the thermally conductive sheet 5
Warm off-color material coating 3.
The varistor with self-checking function of the present embodiment, by the thermally conductive sheet 5 that is connected directly with varistor ontology 1 with
1 heat exchange of varistor ontology transfers out the heat that varistor ontology 1 generates to come, and screen printing is used on thermally conductive sheet 5
The mode of brush forms temperature-sensing color-changing material coating 3, realizes the heat damage situation for indicating varistor on thermally conductive sheet 5, avoids pressing
Quick resistor main body 1 can not further ensure that varistor by self-convection dissipation heat due to internal high power loss
The accuracy and timeliness of self-checking function.
Embodiment 3
As shown in Figure 1-3, the varistor with self-checking function of the present embodiment, structure is same as Example 2, and difference is: institute
It states 1 heat transfer of varistor ontology and is connected with temperature sensing element 6.
The varistor with self-checking function of the present embodiment, it is preferred to use be connected with the varistor of thermally conductive sheet 5, make thermally conductive
Piece 5 is connect with 6 heat transfer of temperature sensing element, the temperature sensing element 6 include temperature detect switch (TDS), heat-sensitive semiconductive device, thermal resistance,
One of thermocouple is a variety of, and for the present embodiment by taking closed type temperature detect switch (TDS) as an example, closed type temperature detect switch (TDS) uses bimetal leaf
As the temperature module, the temperature sensing scissel of closed type temperature detect switch (TDS) is tightly attached on thermally conductive sheet 5, realizes thermally conductive sheet 5 and closed type
The heat transfer of temperature detect switch (TDS) connects, and to ensure temperature effect, the present embodiment is further preferably opened in thermally conductive sheet 5 and closed type temperature control
Coated with thermally conductive silicone grease or the similar heat-conducting medium of other performances on the contact surface of pass, when working normally varistor, closed type
The temperature module of temperature detect switch (TDS) is in free state, and contact is in closed state, and when varistor temperature increases, arrival heat is broken to be changed
When the limit, the setting irreversible generation of temperature-sensing color-changing material coating 3 color change on varistor ontology 1 and/or on thermally conductive sheet 5
Change, instruction staff replaces varistor, and by temperature conduction to closed type temperature detect switch (TDS), bimetal leaf is heated in generation
Stress and act rapidly, break contact, cut off circuit, thus have the function that temperature control protect, make the varistor of the structure not
Only have the function of showing heat damage situation in time also have the function of protecting Sensitive Apparatus.
Further, temperature sensing element 6 is preferably electrically connected latching circuit by the present embodiment, and temperature sensing element 6 is made to restore conducting
Afterwards, it maintains cut-off circuit to remain off, after varistor to be replaced, needs manual restoring circuit to work, further
Realize varistor with this configuration to the defencive function of Sensitive Apparatus.
Embodiment 4
As shown in Figs 1-4, Surge Protector, including shell 7 are provided at least one in the shell 7 as described in Example 3
Varistor with self-checking function.
The Surge Protector of the present embodiment is arranged in shell 7 using the varistor with self-checking function of embodiment 3
There are temperature detect switch (TDS) 9 and corresponding latching circuit or self-locking mechanism, the position setting indication window of discoloration member 2 is corresponded on shell 7
8, enable staff timely to monitor the heat damage situation of varistor according to color change in indication window 8, it is real
The timely replacement of varistor after existing heat damage, guarantees the normal use of Surge Protector, meanwhile, it is arranged in shell 7
Temperature sensing element 6 is connect with the temperature detect switch (TDS) 9 in shell 7, and temperature detect switch (TDS) 9 is connected with corresponding latching circuit, keeps varistor hot
When destruction, timely break contact, cutting circuit, latching circuit disconnect circuit after realizing the recovery of temperature sensing element 6 temperature detect switch (TDS) 9
The locking and maintenance of state have the function that temperature control is protected, and overcome the defect that the prior art realizes indicating fault using machinery,
Failure rate is lower, improves the safety in utilization of Surge Protector.
Above embodiments are only to illustrate the present invention and not limit the technical scheme described by the invention, although this explanation
The present invention has been described in detail referring to the above embodiments for book, but the present invention is not limited to above-mentioned specific embodiment party
Formula, therefore any couple of present invention modifies or equivalent replacement, and the technical solution of all spirit and scope for not departing from invention
And its improve, it should all cover within the scope of the claims of the present invention.
Claims (10)
1. the varistor with self-checking function, it is characterised in that: including varistor ontology and at least one discoloration member, the change
Colour solid is connect with the varistor ontology heat transfer, the discoloration member heat discoloration, the temperature feelings of marking pressure sensitive resistor main body
Condition.
2. as described in claim 1 with the varistor of self-checking function, it is characterised in that: the discoloration member includes heat discoloration
Material coating.
3. as claimed in claim 2 with the varistor of self-checking function, it is characterised in that: the temperature-sensing color-changing material is can not
Inverse temperature-sensing color-changing material.
4. as claimed in claim 2 with the varistor of self-checking function, it is characterised in that: the temperature-sensing color-changing material coating is
One of text, pattern or figure are a variety of.
5. as claimed in claim 2 with the varistor of self-checking function, it is characterised in that: on the temperature-sensing color-changing material coating
It is provided with protective layer.
6. as claimed in claim 2 with the varistor of self-checking function, it is characterised in that: the temperature-sensing color-changing material coating is set
It sets in varistor body surface.
7. as claimed in claim 2 with the varistor of self-checking function, it is characterised in that: the discoloration member further include with it is described
Varistor ontology leads hot linked thermally conductive sheet, and the temperature-sensing color-changing material coating is provided on the thermally conductive sheet.
8. as described in claim 1 with the varistor of self-checking function, it is characterised in that: when the quantity of the discoloration member is two
When a or more than two, the photochromic color and/or discoloring temperature and/or shape of two discoloration members are different.
9. the varistor with self-checking function as described in claim 1-8 any one, it is characterised in that: the varistor
Ontology heat transfer is connected with temperature sensing element.
10. Surge Protector, including shell, it is characterised in that: be provided at least one in the shell as claimed in claim 9
The varistor with self-checking function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910661352.4A CN110233012A (en) | 2019-07-22 | 2019-07-22 | Varistor and its Surge Protector with self-checking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910661352.4A CN110233012A (en) | 2019-07-22 | 2019-07-22 | Varistor and its Surge Protector with self-checking function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112098046A (en) * | 2020-09-21 | 2020-12-18 | 深圳市星汉激光科技有限公司 | Detection system and detection method of semiconductor laser |
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| JP2002152966A (en) * | 2000-11-09 | 2002-05-24 | Ando Electric Co Ltd | Lightning impulse voltage protecting element |
| CN202977036U (en) * | 2012-04-16 | 2013-06-05 | 深圳市辰驹电子科技有限公司 | Anti-surge protector capable of indicating temperature |
| CN106100302A (en) * | 2016-08-22 | 2016-11-09 | 重庆大及电子科技有限公司 | A kind of novel filtering unit |
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2019
- 2019-07-22 CN CN201910661352.4A patent/CN110233012A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002152966A (en) * | 2000-11-09 | 2002-05-24 | Ando Electric Co Ltd | Lightning impulse voltage protecting element |
| CN202977036U (en) * | 2012-04-16 | 2013-06-05 | 深圳市辰驹电子科技有限公司 | Anti-surge protector capable of indicating temperature |
| CN106100302A (en) * | 2016-08-22 | 2016-11-09 | 重庆大及电子科技有限公司 | A kind of novel filtering unit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112098046A (en) * | 2020-09-21 | 2020-12-18 | 深圳市星汉激光科技有限公司 | Detection system and detection method of semiconductor laser |
| CN112098046B (en) * | 2020-09-21 | 2022-06-07 | 深圳市星汉激光科技股份有限公司 | Detection system and detection method of semiconductor laser |
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