CN102779600B - For the energy absorption resistor of brake system of electric locomotive - Google Patents
For the energy absorption resistor of brake system of electric locomotive Download PDFInfo
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- CN102779600B CN102779600B CN201210271476.XA CN201210271476A CN102779600B CN 102779600 B CN102779600 B CN 102779600B CN 201210271476 A CN201210271476 A CN 201210271476A CN 102779600 B CN102779600 B CN 102779600B
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- radiator
- insulating sleeve
- radiator body
- resistor
- radiators
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Abstract
The invention discloses a kind of energy absorption resistor for brake system of electric locomotive, comprise insulating sleeve and Metallic rod wherein, it is characterized in that, described insulating sleeve periphery is installed with at least one Zinc oxide ceramic linear resistor sheet, described insulating sleeve periphery is also installed with two end radiators, or two end radiators and at least one intermediate radiator body, wherein, end radiator is positioned at periphery, insulating sleeve two ends, and intermediate radiator body is positioned at periphery in the middle part of the insulating sleeve between the radiator of both ends; Between the radiator of described end, or be electrically connected by Zinc oxide ceramic linear resistor sheet between intermediate radiator body and between end radiator with intermediate radiator body; Described Metallic rod two ends are provided with connector by two end radiators, or the longitudinal compact siro spinning technology of two end radiators and intermediate radiator body.
Description
Technical field
The present invention relates to a kind of resistor, particularly a kind of energy absorption resistor for railway electric locomotive braking system.
Background technology
A large amount of for the aluminum hull wirewound resistor (Fig. 1) in railway electric locomotive braking system at present, mainly as high-power absorber element or dummy load.Its primary structure is: resistance heart body adopts resistance wire spiral winding to have the insulating sleeve periphery of Metallic rod at cover, resistance wire two ends connect outer cap respectively, outer cap, by arranging a tubular aluminum hull between the insulation isolation longitudinally of interior cap, fills up quartz sand in the cavity between aluminum hull and resistance wire radial direction; Metallic rod two ends are provided with screw thread, two longitudinal insulation of outer caps are connected with nut by pad.The current Problems existing of this resistor is: the resistance wire 1. as resistance heart body is generally B alloy wire, its resistivity is constant, because resistance value and its sectional area are inversely proportional to, so after resistance value is determined, it is very large that the sectional area of resistance wire just can not do, therefore, when exceeding the impulse current (as harmonic wave or resonance current greatly and frequently) of resistance wire sectional area through-current capability, resistance wire is just easily overheated to be burnt, and particularly when two trains are met, burning probability increases greatly; 2. this resistor adopts quartz sand as heat eliminating medium, and radiating effect is not fine; 3. this resistor structure is complicated, and volume is large, Heavy Weight, manufacturing cost are high.
Summary of the invention
In order to solve the problem existing for existing aluminum hull wirewound resistor, the object of this invention is to provide one not only Absorbable rod energy constant, and absorb in short-term heavy current impact time to dispel the heat good, safe and reliable energy absorption resistor.
For reaching above object, the present invention takes following technical scheme to be achieved:
A kind of energy absorption resistor for brake system of electric locomotive, comprise insulating sleeve and Metallic rod wherein, it is characterized in that, described insulating sleeve periphery is installed with at least one Zinc oxide ceramic linear resistor sheet, described insulating sleeve periphery is also installed with two end radiators, or two end radiators and at least one intermediate radiator body, wherein, end radiator is positioned at periphery, insulating sleeve two ends, and intermediate radiator body is positioned at periphery in the middle part of the insulating sleeve between the radiator of both ends; Between the radiator of described end, or be electrically connected by Zinc oxide ceramic linear resistor sheet between intermediate radiator body and between end radiator with intermediate radiator body; Described Metallic rod two ends are provided with connector by two end radiators, or the longitudinal compact siro spinning technology of two end radiators and intermediate radiator body.
In such scheme, described end radiator and intermediate radiator body are the hollow circular cylinder that aluminium alloy is made, and wherein, an end face of end radiator, two end faces of intermediate radiator body are provided with interior concave station; In two end radiators between concave station, or form airtight ring-type chamber by insulating sleeve and dead ring between concave station and between end radiator and the interior concave station of intermediate radiator body in two intermediate radiator bodies, Zinc oxide ceramic linear resistor sheet is arranged in this airtight ring-type chamber.
Lacuna is left between the dead ring side inwall of described airtight ring-type chamber and the outer warp of ceramic resistor sheet.
Described connector comprises nut, pad between nut and end radiator, this nut by the screw thread at Metallic rod two ends, by two end radiators, or two end radiators and the longitudinal compact siro spinning technology of intermediate radiator body.Described pad is the ceramic insulation sheet of a band protruding ring, and the corresponding other end at end radiator arranges a bit of reaming, and during resistor assembling, the protruding ring of ceramic insulation sheet is inserted in this segment reaming.
Described end radiator and intermediate radiator external week are provided with intensive equidistant heat radiation shirt rim.
Resistor of the present invention is compared with existing aluminum hull wirewound resistor, and tool has the following advantages:
1, adopt Zinc oxide ceramic linear resistor sheet as resistance heart body, because Zinc oxide ceramic linear resistor material is a kind of semi-conducting material, its resistivity can be controlled by technical recipe, so can be made into the resistive element adapting to various shape (circular as in the present invention) and different resistance and require, this resistive element has conductor volume large (being about 16 times of metallic resistance silk), almost without inductance (microhenry level), Absorbable rod stack power (moment impact energy) 500-1200J/cm in short-term
3etc. feature, in brake system of electric locomotive energy absorption resistor, the risk that when greatly can reduce two train meetings, resistor easily burns, improves the security reliability of use.
2, comparing metal due to ceramic material is poor conductor of heat, therefore the present invention adopts the structure arranging aluminium alloy radiator (comprising end radiator and intermediate radiator body) between Zinc oxide ceramic linear resistor sheet, solve ceramic linear resistor sheet to dispel the heat bad problem, make this resistor absorb the effect of energy constant not second to traditional resistors.
3, resistor structure of the present invention is simple, and volume little (under identical energy tolerance condition), be about 1/3 of aluminum hull wirewound resistor, lightweight, manufacturing cost is lower.
Resistor of the present invention also can be applicable to the fields such as neutral point in electric power system earthing device, switching protective device, megawatt-level wind relief arrangement, communication system base station power control.
Accompanying drawing explanation
Below in conjunction with the drawings and the specific embodiments, the present invention is described in further detail.
Fig. 1 is existing a kind of aluminum hull wirewound resistor structural representation.
Fig. 2 is resistor structure schematic diagram of the present invention.
Fig. 3 is the end radiator structure figure in Fig. 2.
Fig. 4 is the intermediate radiator body structure figure in Fig. 2.
In Fig. 1 to Fig. 4: 1, Metallic rod; 2, pad; 3, interior cap; 4, insulating sleeve; 5, resistance wire; 6, quartz sand; 7, aluminum hull; 8, outer cap; 9, nut; 10, flat shim; 11, spring leaf; 12, end radiator; 13, dead ring; 14, intermediate radiator body; 15, ceramic resistor sheet; 16, lacuna; 17, ceramic insulation sheet; 18, reaming; 19, interior concave station.
Embodiment
See Fig. 2, a kind of energy absorption resistor for brake system of electric locomotive, comprise insulating sleeve 4 and Metallic rod wherein 1, insulating sleeve periphery is installed with four ceramic resistor sheets 15, insulating sleeve periphery is also installed with two end radiators 12 and three intermediate radiator bodies 14, wherein, end radiator is positioned at periphery, insulating sleeve two ends, and intermediate radiator body is positioned at periphery in the middle part of the insulating sleeve between the radiator of both ends.Be electrically connected by ceramic resistor sheet 15 between intermediate radiator body, between end radiator with intermediate radiator body, this ceramic resistor sheet is Zinc oxide ceramic linear resistor sheet.Metallic rod two ends are provided with screw thread, by ceramic insulation sheet 17, flat shim 10, spring leaf 11 and nut 9, two end radiators 12 and three intermediate radiator body 14(are comprised four Zinc oxide ceramic linear resistor sheets) longitudinal compact siro spinning technology.The present invention is not limited to above embodiment, and the quantity as resistor disc, intermediate radiator body can adjust according to the designing requirement of different size resistor.
Ceramic insulation sheet 17 is the insulation spacer of a band protruding ring, a corresponding end face at end radiator 12 is provided with a bit of reaming 18(Fig. 3), during resistor assembling, the protruding ring of ceramic insulation sheet is inserted in this segment reaming, the advantage of this structure is, add the creepage distance between end radiator and Metallic rod, increase both insulation degree in end.
See Fig. 3, Fig. 4, end radiator 12 and intermediate radiator body 14 are the hollow circular cylinder that aluminium alloy is made, periphery is provided with intensive equidistant heat radiation shirt rim, wherein, another end face of end radiator, two end faces of intermediate radiator body is provided with interior concave station 19; Airtight ring-type chamber is formed by insulating sleeve 4 and dead ring 13 between concave station and between end radiator and the interior concave station of intermediate radiator body in two intermediate radiator bodies, ceramic resistor sheet 15 is located in this airtight ring-type chamber (Fig. 1), this structure dust protection, steam etc. can enter this airtight ring-type chamber and causes pollution to resistance heart body, improves the useful life of ceramic resistor sheet.
Because the two end electrodes face of ceramic resistor sheet all contacts aluminium alloy radiator, so the heat after making ceramic resistor sheet be heated can be transmitted by radiator rapidly, substantially increase the radiating efficiency of resistor.Lacuna 16(Fig. 1 is left) between the dead ring side inwall of airtight ring-type chamber and the outer warp of ceramic resistor sheet, the radial expansion seam that this structure reserves after being actually and being heated to ceramic resistor sheet, radiator, meets with to damaging with peventing member expansion institute's resistor structure stress defect that causes.
The resistor that the present invention is prepared above-mentioned employing Zinc oxide ceramic linear resistor sheet and existing aluminum hull wirewound resistor have carried out several serviceability contrast experiments in electric locomotive, and the result obtained is shown in table 1.As can be seen from Table 1, resistor of the present invention is obviously better than traditional resistors, has good popularizing application prospect.
Table 1
Claims (2)
1. the energy absorption resistor for brake system of electric locomotive, comprise insulating sleeve and Metallic rod wherein, it is characterized in that, described insulating sleeve periphery is installed with at least one Zinc oxide ceramic linear resistor sheet, described insulating sleeve periphery is also installed with two end radiators, or two end radiators and at least one intermediate radiator body, wherein, end radiator is positioned at periphery, insulating sleeve two ends, and intermediate radiator body is positioned at periphery in the middle part of the insulating sleeve between the radiator of both ends; Between the radiator of described end, or be electrically connected by Zinc oxide ceramic linear resistor sheet between intermediate radiator body and between end radiator with intermediate radiator body; Described Metallic rod two ends are provided with connector by two end radiators, or the longitudinal compact siro spinning technology of two end radiators and intermediate radiator body;
Described end radiator and intermediate radiator body are the hollow circular cylinder that aluminium alloy is made, and wherein, an end face of end radiator, two end faces of intermediate radiator body are provided with interior concave station; In two end radiators between concave station, or form airtight ring-type chamber by insulating sleeve and dead ring between concave station and between end radiator and the interior concave station of intermediate radiator body in two intermediate radiator bodies, Zinc oxide ceramic linear resistor sheet is arranged in this airtight ring-type chamber.
2., as claimed in claim 1 for the energy absorption resistor of brake system of electric locomotive, it is characterized in that, between the dead ring side inwall of described airtight ring-type chamber and the outer warp of ceramic resistor sheet, leave lacuna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210271476.XA CN102779600B (en) | 2012-07-31 | 2012-07-31 | For the energy absorption resistor of brake system of electric locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210271476.XA CN102779600B (en) | 2012-07-31 | 2012-07-31 | For the energy absorption resistor of brake system of electric locomotive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102779600A CN102779600A (en) | 2012-11-14 |
| CN102779600B true CN102779600B (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210271476.XA Expired - Fee Related CN102779600B (en) | 2012-07-31 | 2012-07-31 | For the energy absorption resistor of brake system of electric locomotive |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110971247B (en) * | 2018-09-30 | 2022-04-15 | 西门子(深圳)磁共振有限公司 | Dummy load structure of radio frequency transmission system, manufacturing method thereof and radio frequency transmission system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86100666A (en) * | 1986-01-21 | 1987-08-05 | 湖北鄂州市精华电器厂 | The gapped pressure-sensitive lightning arrester that has radiator |
| CN1336671A (en) * | 2000-07-28 | 2002-02-20 | 中电联北京实业开发总公司电器开关厂 | Lightning arrester with combined jet fuse switch |
| CN101866731A (en) * | 2010-02-12 | 2010-10-20 | 陕西泰普瑞电工绝缘技术有限公司 | Polymeric housed arrester and method for preparing no-local-discharge compound-glass fiber winding pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202749178U (en) * | 2012-07-31 | 2013-02-20 | 西安东太电子陶瓷有限公司 | Energy absorption resistor for electric locomotive braking system |
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2012
- 2012-07-31 CN CN201210271476.XA patent/CN102779600B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86100666A (en) * | 1986-01-21 | 1987-08-05 | 湖北鄂州市精华电器厂 | The gapped pressure-sensitive lightning arrester that has radiator |
| CN1336671A (en) * | 2000-07-28 | 2002-02-20 | 中电联北京实业开发总公司电器开关厂 | Lightning arrester with combined jet fuse switch |
| CN101866731A (en) * | 2010-02-12 | 2010-10-20 | 陕西泰普瑞电工绝缘技术有限公司 | Polymeric housed arrester and method for preparing no-local-discharge compound-glass fiber winding pipe |
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| CN102779600A (en) | 2012-11-14 |
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Granted publication date: 20150902 Termination date: 20160731 |