CN204884735U - Low temperature is with high -power resistance of small -size pulse - Google Patents
Low temperature is with high -power resistance of small -size pulse Download PDFInfo
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- CN204884735U CN204884735U CN201520652844.4U CN201520652844U CN204884735U CN 204884735 U CN204884735 U CN 204884735U CN 201520652844 U CN201520652844 U CN 201520652844U CN 204884735 U CN204884735 U CN 204884735U
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Abstract
The utility model discloses a low temperature is with high -power resistance of small -size pulse. It includes resistance skeleton, electrode and high -pressure voltage -sharing cap by the insulating material preparation, with the anti - circle mode winding resistance wire of equidistance on the resistance skeleton, resistance wire and electrode welding and the location both ends at the resistance skeleton, high pressure voltage -sharing cap is installed at resistance framework two ends and is set up in the electrode outside, and high pressure voltage -sharing cap center opening is so that the electrode passes through opening and the outside connection of electric lines of resistor, resistance skeleton, electrode and high -pressure voltage -sharing cap still wrap up one deck low -temperature insulation embedment layer outward, low -temperature insulation embedment layer surface is the corrugate. The utility model discloses a low temperature is with high -power resistance of small -size pulse is that pulse power is 1MW-5MW, small in 12cm3's resistance, and this resistance is under - 40 DEG C -60 DEG C ambient condition, and resistance pulse power performance is not influenced, and under high power pulse service condition, the resistance resistance is stable, the change is less than 3%.
Description
Technical field
The utility model relates to a kind of resistor, is specifically related to the small-sized pulse high-power resistance of a kind of low temperature.
Background technology
Resistor is generally directly called resistance in daily life.Be a current limiting element, connect by resistance in circuit, the resistance of resistor is fixing, is generally that two pins do electrode, and it can the size of current on its institute's chord road of restricted passage.Resistance plays dividing potential drop, shunting in circuit usually.
Under powerful resistance is applied in high voltage, big current environment usually, therefore need to consider that can the power of resistance itself meet the demands, can the interelectrode electrical breakdown withstand distance of resistance two pins meet the demands under high voltage.
Current pulse high-power resistance comprises oxide-film resistance, ceramic resistor, water resistance etc.In order to meet high-power requirement, the volume of resistance is all very large, if stand the RY31A oxide-film hyperfrequency resistor of equal pulse power, its overall dimension is Φ 25mm × 265mm, volume 130cm
3.Bulky high-power resistance has larger limitation in application.On the other hand, can there is large change in the high-power resistances such as water resistance at low ambient temperatures performance, as degradation under resistance instability, withstand voltage properties.
Utility model
[technical problem that will solve]
The purpose of this utility model is the problem solving above-mentioned prior art, there is provided a kind of low temperature small-sized pulse high-power resistance, high-power resistor, insulation system, low temperature environment adaptability combine by the utility model, successfully achieve the resistance preparation that volume is little, pulse power high and low temperature environmental applications performance is good.
[technical scheme]
In order to reach above-mentioned technique effect, the utility model takes following technical scheme:
The small-sized pulse high-power resistance of a kind of low temperature, it comprises the equal pressure cap of resistance skeleton, electrode and high pressure prepared by insulating material, and described resistance skeleton is wound around resistance wire in equidistant anti-circle mode; Described resistance wire and electrode welding are also positioned at the two ends of resistance skeleton; The equal pressure cap of described high pressure is arranged on resistance skeleton two ends and is arranged on outside electrode, and the equal pressure cap central opening of described high pressure is connected with resistor external cable by opening to make electrode; Described resistance skeleton, electrode and the equal pressure cap of high pressure also wrap up one deck low-temperature insulation embedding layer outward, and described low-temperature insulation embedding layer surface is corrugated.
The utility model is technical scheme further, and resistance skeleton is prepared from by YB-2 aerial organic glass, polyimides or polytetrafluoroethylene.
The utility model is technical scheme further, described resistance wire to be resistivity be 1.33 ± 0.07 μ Ω m, temperature coefficient α is ± 5 × 10
-6/ DEG C, diameter is the alloy resistance wire of 0.6mm ~ 1.2mm.
The utility model is technical scheme further, and described low-temperature insulation embedding layer is the epoxy glue composition that insulation resistance is not less than 500M Ω.
The utility model will be explained below.
The small-sized pulse high-power resistance of a kind of low temperature, it comprises the equal pressure cap of resistance skeleton, electrode and high pressure, and described resistance skeleton is wound around resistance wire in equidistant anti-circle mode; Described resistance wire and electrode welding are also positioned at the two ends of resistance skeleton; The equal pressure cap of described high pressure is wrapped in resistance skeleton two ends and is arranged on outside electrode, and the equal pressure cap central opening of described high pressure is connected with resistor external cable by opening to make electrode; Described resistance skeleton, electrode and the equal pressure cap of high pressure also wrap up one deck low-temperature insulation embedding layer outward, and described low-temperature insulation embedding layer surface is corrugated.
The utility model utilizes above-mentioned preparation method can prepare in the scope of pulse power for 1MW ~ 5MW, and volume is less than 12cm
3resistance, this resistance is under the environmental condition of-40 DEG C ~ 60 DEG C, and resistance pulse power performance is unaffected; And under high power pulse service conditions, resistance is stablized, and change is less than 3%.
A low temperature preparation method for small-sized pulse high-power resistance, it comprises the following steps:
(1) resistance of resistance, overall dimension is determined, and determine voltage, electric current and temperature conditions that resistance is applied, then according to resistance, the overall dimension of resistance, voltage, electric current and temperature conditions that resistance is applied design and process resistance part, and carry out polishing, cleaning to resistance part; Described resistance part comprises resistance skeleton, electrode, the equal pressure cap of high pressure;
In step (1), polishing is carried out to resistance part, cleaning is to ensure the mellow and full of part, reduce the impact that profile is applied high voltage, big current with processing flaw.
(2) by resistance wire according to equidistant anti-circle mode uniform winding on the resistance skeleton prepared by insulating material, and and electrode welding, make it be positioned at resistance skeleton two ends, form naked resistance;
Equidistant anti-circle canoe described in the utility model is after first for resistance wire forward is wound around N circle, more equidistant reverse-winding N circle, then continues equidistant forward and is wound around N circle; The appropriate number of turn is repeated, to reduce the inductance parameters of resistance according to resistance size.It is identical with the total number of turns of reverse-winding that forward described here is wound around total number of turns, and forward is wound around distance with reverse-winding apart from equal.
(3) by naked resistance removal of impurities decontamination, then hyperthermia drying is carried out again with after dehydration of alcohol; Then by after the equal pressure cap of naked resistance two ends installation high-voltage, load in encapsulating die;
The equal pressure cap of high pressure used in step (3) is the resistance part designed according to the shape need of the utility model resistance, plays uniform electric field, reduction electric field is concentrated.
(4), after injecting casting glue that is low temperature resistant, that insulate to mould in the mode that vacuum pressure reduction injects, the bubble in mould is got rid of; Then adopt the solidification of the gradient temperature difference, obtain the small-sized pulse high-power resistance of described low temperature.
By vacuum pressure reduction injection method, the utility model guarantees that the infiltration of encapsulating material and packed, bubble-free, interface cohesive force are high; And the gradient temperature difference solidification adopted, to discharge the residual stress of casting glue, when avoiding the temperature difference larger, residual stress causes resistance different materials interfacial detachment, even cracking etc. to cause the problem of high voltage withstanding hydraulic performance decline.
The utility model is technical scheme further, and described resistance skeleton is prepared from by YB-2 aerial organic glass, polyimides or polytetrafluoroethylene.
The utility model is technical scheme further, and described resistance wire is resistivity be 1.33 ± 0.07 μ Ω m, temperature coefficient α is ± 5 × 10
-6/ DEG C, diameter is the alloy resistance wire of 0.6mm ~ 1.2mm.Above-mentioned resistivity refers to the resistivity when temperature is 20 DEG C.The utility model specifically selects the specification of resistance wire according to the requirement of resistance and overall dimension.
The utility model is technical scheme further, and described naked resistance removal of impurities decontamination is soaked by naked resistance decontamination liquid, and carry out ultrasonic cleaning, removes its surface impurity, greasy dirt.
The utility model is technical scheme further, and described casting glue is the epoxy glue that insulation resistance is not less than 500M Ω.
Described epoxy glue is preferably the adaptable casting glue of low-temperature environment.
The utility model uses resistance skeleton, resistance wire, casting glue to be all the materials that insulating properties is high, temperature environment adaptability is good, to guarantee to obtain the resistance that volume is little, high-power resistor variation coefficient is little, low temperature environment application performance is good.
The utility model is technical scheme further, and described low temperature is corrugated by small-sized pulse high-power resistance surface design.Adopt undulatory surface design to increase creepage distance, strengthen high voltage withstanding performance.
The utility model is technical scheme further, and the temperature difference of described gradient temperature difference solidification is 10 DEG C.
[beneficial effect]
The utility model compared with prior art, has following beneficial effect:
Low temperature of the present utility model is pulse power with small-sized pulse high-power resistance is 1MW ~ 5MW, volume is less than 12cm
3resistance, this resistance is under the environmental condition of-40 DEG C ~ 60 DEG C, and resistance pulse power performance is unaffected; And under high power pulse service conditions, resistance is stablized, and change is less than 3%.
Accompanying drawing explanation
Fig. 1 is the small-sized pulse high-power resistance schematic diagram of low temperature prepared by the utility model;
Description of reference numerals is as follows:
1 is resistance skeleton; 2 is electrode; 3 is the equal pressure cap of high pressure; 4 is resistance wire; 5 is low-temperature insulation embedding layer.
Embodiment
Below in conjunction with embodiment of the present utility model, the utility model is further elaborated.
Embodiment:
A kind of low temperature with small-sized pulse high-power resistance structure as shown in Figure 1, it comprises the equal pressure cap 3 of resistance skeleton 1, electrode 2 and high pressure, and described resistance skeleton 1 is wound around resistance wire 4 in equidistant anti-circle mode; Described resistance wire 4 welds with electrode 2 and is positioned at the two ends of resistance skeleton 1; The equal pressure cap 3 of described high pressure is arranged on resistance skeleton 1 two ends and is arranged on outside electrode 2, and described high pressure equal pressure cap 3 central opening is connected with resistor external cable by opening to make electrode; The equal pressure cap 3 of described resistance skeleton 1, electrode 2 and high pressure is outer also wraps up one deck low-temperature insulation embedding layer 5, and described low-temperature insulation embedding layer 5 surface is corrugated.
Prepare that a kind of Standard resistance range is 1k Ω ~ 10k Ω continuously adjustabe, the small-sized pulse high-power resistance of above-mentioned low temperature of environmental condition application in gsec internal power scope 1MW ~ 5MW, temperature range-40 DEG C ~ 60 DEG C.
Preparation method is as follows:
(1) according to resistance, the overall dimension of resistance, voltage, electric current and temperature conditions that resistance is applied design and process resistance part, and carry out polishing, cleaning to resistance part; Described resistance part comprises resistance skeleton, electrode, the equal pressure cap of high pressure;
(2) by resistivity be 1.33 ± 0.07 μ Ω m, temperature coefficient α is ± 5 × 10
-6/ DEG C, diameter be the alloy resistance wire of 0.6mm ~ 1.2mm according to equidistant anti-circle mode uniform winding on the resistance skeleton prepared by insulating material, and and electrode welding, make it be positioned at resistance skeleton two ends, form naked resistance;
(3) naked resistance decontamination liquid is soaked, and carry out ultrasonic cleaning, remove its surface impurity, greasy dirt, then carry out hyperthermia drying again with after dehydration of alcohol; Then, after the equal pressure cap of high voltage being installed at naked resistance two ends, load in encapsulating die;
Inject after insulation resistance is not less than the adaptable epoxy glue of low-temperature environment of 500M Ω to mould in the mode of vacuum pressure reduction injection method, get rid of the bubble in mould; Then adopt the solidification of the gradient temperature difference, obtain the small-sized pulse high-power resistance of described low temperature.
The small-sized pulse high-power resistance of low temperature of the present utility model can reach 1MW ~ 5MW at gsec internal power, and size can accomplish D=Φ 16mm, and (volume is less than 12cm to L=58mm
3), and this resistance is under the environmental condition of-40 DEG C ~ 60 DEG C, and resistance pulse power performance is unaffected; Under high power pulse service conditions, as being 5 μ s in pulse duration, power is under the condition of 5MW, and resistance is stablized, and change is less than 3%.
The purpose of this utility model is to provide a kind of Pulse Power Techniques small volume cryogenic applications resistance to solve the stability of small-sized low temperature pulse high-power resistance and relevant preparation problem.The characteristics such as when resistance of the present utility model has that volume is little, resistance voltage coefficient is little, low temperature environment application performance is good and high power pulsed ion beams reruns resistance is stable.
Although be described the utility model with reference to explanatory embodiment of the present utility model here, above-described embodiment is only the utility model preferably execution mode, execution mode of the present utility model is not restricted to the described embodiments, should be appreciated that, those skilled in the art can design a lot of other amendment and execution mode, these amendments and execution mode will drop within spirit disclosed in the present application and spirit.
Claims (4)
1. the small-sized pulse high-power resistance of low temperature, it is characterized in that it comprises resistance skeleton (1), electrode (2) and the equal pressure cap of high pressure (3) prepared by insulating material, described resistance skeleton (1) is wound around resistance wire (4) in equidistant anti-circle mode; Described resistance wire (4) welds with electrode (2) and is positioned at the two ends of resistance skeleton (1); The equal pressure cap of described high pressure (3) is arranged on resistance skeleton (1) two ends and is arranged on electrode (2) outside, and the equal pressure cap of described high pressure (3) central opening is connected with resistor external cable by opening to make electrode; Described resistance skeleton (1), electrode (2) and the equal pressure cap of high pressure (3) also wrap up one deck low-temperature insulation embedding layer (5) outward, and described low-temperature insulation embedding layer (5) surface is corrugated.
2. the small-sized pulse high-power resistance of low temperature according to claim 1, is characterized in that resistance skeleton (1) is prepared from by YB-2 aerial organic glass, polyimides or polytetrafluoroethylene.
3. the small-sized pulse high-power resistance of low temperature according to claim 1, it is characterized in that described resistance wire (4) for resistivity be 1.33 ± 0.07 μ Ω m, temperature coefficient α is ± 5 × 10
-6/ DEG C, diameter is the alloy resistance wire of 0.6mm ~ 1.2mm.
4. the small-sized pulse high-power resistance of low temperature according to claim 1, is characterized in that described low-temperature insulation embedding layer (5) is the epoxy glue composition that insulation resistance is not less than 500M Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520652844.4U CN204884735U (en) | 2015-08-26 | 2015-08-26 | Low temperature is with high -power resistance of small -size pulse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520652844.4U CN204884735U (en) | 2015-08-26 | 2015-08-26 | Low temperature is with high -power resistance of small -size pulse |
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| Publication Number | Publication Date |
|---|---|
| CN204884735U true CN204884735U (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520652844.4U Expired - Fee Related CN204884735U (en) | 2015-08-26 | 2015-08-26 | Low temperature is with high -power resistance of small -size pulse |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109003797A (en) * | 2018-07-26 | 2018-12-14 | 中国工程物理研究院流体物理研究所 | A kind of high voltage pulse transformer |
-
2015
- 2015-08-26 CN CN201520652844.4U patent/CN204884735U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109003797A (en) * | 2018-07-26 | 2018-12-14 | 中国工程物理研究院流体物理研究所 | A kind of high voltage pulse transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20190826 |
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| CF01 | Termination of patent right due to non-payment of annual fee |