CN204720269U - A kind of helical coil element for the protection of Capacitor banks - Google Patents
A kind of helical coil element for the protection of Capacitor banks Download PDFInfo
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- CN204720269U CN204720269U CN201520448854.6U CN201520448854U CN204720269U CN 204720269 U CN204720269 U CN 204720269U CN 201520448854 U CN201520448854 U CN 201520448854U CN 204720269 U CN204720269 U CN 204720269U
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- helical coil
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- out wire
- protection
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Abstract
A kind of helical coil element for the protection of Capacitor banks; comprise insulation inner core, insulation urceolus, be arranged on the helical coil insulated between inner core and insulation urceolus; the tubular lead-out wire being set in insulation inner core two ends is also provided with between insulation inner core and insulation urceolus; tubular lead-out wire is connected with helical coil, and tubular lead-out wire offers groove.The utility model can current waveform in regulating system; again can absorption system gross energy and itself does not blast during capacitor short-circuit fault in protection system; there is not secondary damage in protection system miscellaneous equipment, process structure is simple, and shaped article parameter consistency is higher.
Description
Technical field
The utility model relates to helical coil, specifically a kind of helical coil element for the protection of Capacitor banks.
Background technology
Current many large-current electric origin systems are as applied numerous high energy capacitor group in the systems such as laser weapon power supply, electromagnetic launch power supply, the pulse power, high energy capacitor group is the critical elements of power-supply system, in order to high energy capacitor is protected, need in system a kind ofly can to absorb again gross energy because of system when short trouble appears in capacitor in system and the element that itself does not blast by regulating system current waveform, there is not secondary damage in this element protection system miscellaneous equipment, reduce the loss during system failure, reduce system maintenance cost; Here it is helical coil element, some places are protection inductance, and this component technology complex structure of current domestic production, component parameters consistency is poor.
Utility model content
For solving the problems of the technologies described above; adopt a kind of helical coil element for the protection of Capacitor banks; can current waveform in regulating system; again can absorption system gross energy and itself does not blast during capacitor short-circuit fault in protection system; there is not secondary damage in protection system miscellaneous equipment; process structure is simple, and shaped article parameter consistency is higher.
For realizing above-mentioned utility model object; the technical solution adopted in the utility model is: a kind of helical coil element for the protection of Capacitor banks; comprise insulation inner core, insulation urceolus, be arranged on the helical coil insulated between inner core and insulation urceolus; the tubular lead-out wire being set in insulation inner core two ends is also provided with between insulation inner core and insulation urceolus; tubular lead-out wire is connected with helical coil, and tubular lead-out wire offers groove.
The contact-making surface of tubular lead-out wire described in the utility model and helical coil is spiral end face.
Groove described in the utility model is axially offered along tubular lead-out wire, is disconnected by tubular lead-out wire.
Insulation inner core described in the utility model is provided with multiple insulation spacer arranged in a uniform, and insulation spacer is arranged between helical coil circle and circle.
The utility model beneficial effect is: process structure is unique; lead-out wire is made tubular; increasing heat radiation area; strengthen components integers intensity, absorption system gross energy and itself does not blast during capacitor short-circuit fault in protection system, there is not secondary damage in protection system miscellaneous equipment simultaneously; shaped article parameter consistency improves greatly; mechanical strength is strengthened, and process structure is simple, and lead-out wire is convenient.
Accompanying drawing explanation
Fig. 1 is sectional structure schematic diagram of the present utility model;
Fig. 2 is the utility model tubular lead-out wire schematic diagram;
Fig. 3 is that the utility model helical coil welds figure with two ends tubular lead-out wire;
Fig. 4 is installed on cutaway view between insulation inner/outer tube after helical coil welding;
In figure: 1, helical coil, 2, insulation inner core, 3, insulation urceolus, 4, tubular lead-out wire, 401, groove, 402, spiral end face, 403, lateral surface, 404, connecting hole, 5, insulation spacer.
Embodiment
As shown in the figure, helical coil element is made up of stainless steel bar helical coil, insulation urceolus, insulation inner core, tubular stainless steel lead-out wire, fixture.
Main feature:
(1) helical coil adopts the natural resilience processes building on material behavior, maintains the primary characteristic of material, eliminates coil stress, improve component parameters consistency.
(2) tubular lead-out wire is processed with groove, and avoid element internal eddy current, it is various that groove offers mode, and tubular lead-out wire, for offer by element axial direction, disconnects, interrupts element internal eddy current by optimum mode.
(3) tubular lead-out wire is between inside and outside insulating cylinder, improves components integers mechanical strength.
(4) the lateral surface of tubular lead-out wire exposes, and exposed area is comparatively large, reduces element temperature rise.
Helical coil protection component making step is as follows:
(1) determine according to predetermined current parameters the stainless steel bar sectional area and the diameter that make helical coil;
(2), according to predetermined inductance value L and rod iron diameter, utilize cored screw pipe winding inductance quantity computing formula determination mean diameter of coil D, number of turn N and height H;
(3) calculate rod iron length according to number of turn N and height H, utilize law of resistance formula, calculate the resistance R of coil;
If the resistance R of coil (4) calculated meets predetermined value, carry out next step design, turn back to the if do not meet and (2) walk, redefine coil parameter, until resistance R meets predetermined value;
(5) the size of insulation urceolus, insulation inner core is determined according to coil shape size;
(6) calculate mass of coil m according to coil method, and utilize heat absorption formulae discovery coil temperature rise, if temperature rise lower than setting insulation inner core burning-point 65%, then design meets the demands, and no side is got back to the and (1) walked redesign.
Specific embodiments:
1, in Fig. 3, helical coil 1 is welded with two ends tubular lead-out wire 4, tubular lead-out wire 4 is processed with spiral end face 402, just can fully fit with helical coil 2, contact-making surface place full weld, can bearing great current after ensureing coil electricity.
2, in Fig. 4, the coil welded in Fig. 2 is arranged on insulation inner core 2, coil turn spacing adjusts by insulation spacer 5, insulation spacer 5 bonds by resin glue and insulation inner core 2, can according to actual conditions, increase the quantity of insulation spacer 5, then installing insulating urceolus 3, by pin, insulation urceolus 3, coil welding body 1 and insulation inner core 2 are fixed on one.
Example illustrates:
Known system gross energy Q (J), electric current I (KA), inductance value L (μ H), resistance R (Ω).
(1) according to the size determination stainless steel bar sectional area S and average diameter D of electric current I;
(2), according to cored screw winding inductance quantity computing formula (1), determine turn number N, coil diameter D, coil height H;
…………..(1)
In formula (1), L is inductance value, and unit is μ H, D is mean diameter of coil, and unit mm, N are coil turn, and H is coil height, unit mm;
(3), according to law of resistance formula (2), calculate the resistance R of coil;
................(2)
In formula (2)
for resistance, unit is Ω,
for coil method resistivity, unit is micro-ohm rice, and l is rod iron total length unit be m, S is rod iron sectional area, unit Wei ㎡.
(4) if resistance
meet predetermined value, carry out next step design, turn back to the if do not meet and (2) walk, redefine coil parameter, until resistance
meet predetermined value;
(5) the size of insulation urceolus, insulation inner core is determined according to coil shape size;
(6) calculate mass of coil m, calculate coil temperature rise according to heat absorption computing formula (3); If temperature rise lower than setting insulation inner core burning-point 65%, then design meets the demands, and no side is got back to the and (1) walked redesign;
................(3)
In formula (3), Q is gross energy, the ratio hot melt of unit to be J, C be coil method, and unit is J/g. DEG C, m is quality, and unit is g, △ t is coil method temperature rise, and unit is DEG C.
Claims (4)
1. the helical coil element for the protection of Capacitor banks; comprise insulation inner core (2), insulation urceolus (3), be arranged on the helical coil (1) insulated between inner core (2) and insulation urceolus (3); it is characterized in that: between insulation inner core (2) and insulation urceolus (3), be also provided with the tubular lead-out wire (4) being set in insulation inner core (2) two ends; tubular lead-out wire (4) is connected with helical coil (1), and tubular lead-out wire (4) offers groove (401).
2. a kind of helical coil element for the protection of Capacitor banks as claimed in claim 1, is characterized in that: described tubular lead-out wire (4) is spiral end face (402) with the contact-making surface of helical coil (1).
3. a kind of helical coil element for the protection of Capacitor banks as claimed in claim 1, is characterized in that: described groove (401) is axially offered along tubular lead-out wire (4), is disconnected by tubular lead-out wire (4).
4. a kind of helical coil element for the protection of Capacitor banks as claimed in claim 1; it is characterized in that: described insulation inner core (2) is provided with multiple insulation spacer arranged in a uniform (5), insulation spacer (5) is arranged on helical coil (1) between circle and circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520448854.6U CN204720269U (en) | 2015-06-29 | 2015-06-29 | A kind of helical coil element for the protection of Capacitor banks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520448854.6U CN204720269U (en) | 2015-06-29 | 2015-06-29 | A kind of helical coil element for the protection of Capacitor banks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204720269U true CN204720269U (en) | 2015-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520448854.6U Active CN204720269U (en) | 2015-06-29 | 2015-06-29 | A kind of helical coil element for the protection of Capacitor banks |
Country Status (1)
| Country | Link |
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| CN (1) | CN204720269U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192443A (en) * | 2018-08-31 | 2019-01-11 | 华中科技大学 | A kind of current limliting energy-absorbing protection inductance and energy-storage units for impulse capacitor group |
-
2015
- 2015-06-29 CN CN201520448854.6U patent/CN204720269U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192443A (en) * | 2018-08-31 | 2019-01-11 | 华中科技大学 | A kind of current limliting energy-absorbing protection inductance and energy-storage units for impulse capacitor group |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 461000 Xuchang economic and Technological Development Zone, Henan, Xuchang Patentee after: Xuchang Xuji Power Distribution Co., Ltd. Address before: 461000 Xuchang economic and Technological Development Zone, Henan, Xuchang Patentee before: XUCHANG XUJI DISTRIBUTION CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 461000 Xuchang economic and Technological Development Zone, Henan, Xuchang Patentee after: Xuchang yushengchang Electric Co.,Ltd. Address before: 461000 Xuchang economic and Technological Development Zone, Henan, Xuchang Patentee before: XUCHANG XUJI DISTRIBUTION Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |