CN201758061U - High-power water-cooled resistor - Google Patents
High-power water-cooled resistor Download PDFInfo
- Publication number
- CN201758061U CN201758061U CN2010202427865U CN201020242786U CN201758061U CN 201758061 U CN201758061 U CN 201758061U CN 2010202427865 U CN2010202427865 U CN 2010202427865U CN 201020242786 U CN201020242786 U CN 201020242786U CN 201758061 U CN201758061 U CN 201758061U
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- Prior art keywords
- water
- resistor
- resistance
- insulation crust
- power
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000009413 insulation Methods 0.000 claims abstract description 33
- 239000000498 cooling water Substances 0.000 claims abstract description 18
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 8
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 238000001816 cooling Methods 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 abstract description 2
- 239000000956 alloy Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 229910052573 porcelain Inorganic materials 0.000 description 3
- 210000003660 reticulum Anatomy 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 208000033999 Device damage Diseases 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009730 filament winding Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model relates to a high-power water-cooled resistor used for a high-voltage direct-current power transmission converter valve, and comprises an insulation housing and a resistor body arranged in the insulation housing; the resistor body comprises a resistance film layer and resistance substrates, wherein the resistance film layer is arranged between the two resistance substrates; a cooling water passage is respectively arranged on the outer sides of the two resistance substrates; water inlets and water outlets of the cooling water passages are respectively formed on the insulation housing; and the resistance film layer is connected with a resistance terminal arranged on the insulation housing. Firstly, since a water tank in the resistor is larger, the resistor is superior during a water break test; secondly, since the resistor adopts the insulation and water-cooling methods, the thermal resistance between a pull-up resistor and water is extremely low, the heat exchange area is very large, and the temperature of the resistor under the same power is greatly reduced. Therefore, the resistor has highest power volume ratio, and the power of 6KW above under the condition of sufficient water flow can be achieved. The resistor is suitable for occasions with high power, can undergo a water pressure of 2MPa, and has the advantages of simple structure, reasonable layout and wide application range.
Description
Technical field
The utility model belongs to the electric power system devices field, is specifically related to a kind of high power water-cooled resistor for high voltage direct current transmission converter valve.
Background technology
Since 20th century the mid-80s, the liquid cools that all converter valve in the electric power system have all adopted pure water or water/ethylene glycol to mix, water-cooled resistance is main heat dissipation element in the converter valve, the quality of its heat dispersion is directly connected to the normal operation of converter valve, common DC converter valve adopts the indirect water-cooling mode, water-cooling system and damping resistance are independent separate, this kind radiating mode volume is big, heat dispersion is relatively poor, the inductance of water-cooled resistance high impedance can occur under high frequency voltage in addition, and converter valve may suffer lightning impulse when operation, the steep wave surge voltage, frequency is very high, finally causes device damage.
Chinese patent application 200720311343.5 discloses a kind of simple in structure, modularized design, and overall dimension is comparatively fixing, and is specially adapted to extra-high voltage direct-current transmission converter valve water-cooling type damped resistor.This resistor comprises resistive element and insulation crust, it is characterized in that, described insulation crust includes cavity and lid, be provided with spiral channel in the cavity, its entery and delivery port connects the upper and lower gas thread water swivel of a side of cavity respectively, and described resistive element is a resistive band, and it is arranged between the spiral channel, the two ends of resistive band connect the upper and lower binding post of another side of cavity respectively, and described lid docks with cavity described spiral channel and resistive band sealing.
Chinese patent application 01246810.X discloses a kind of high-power water-cooled wirewound resistor, it is poor at the anti-high current impulse withstanding capability of present high-power wire-wound resistor, it is little that depended on pressure connects the electric dangerous power that reliably causes, volume is big, Heavy Weight and a kind of anti-heavy current impact that provides, electric touch-safe are reliable, and power is big, volume is little, lightweight high-power water-cooled wirewound resistor.It is to establish the sluice at the porcelain tube inside and outside circle, establish water hole on the cap up and down at porcelain tube, set resistive band termination is fixed in up and down and forms resistor core on the cap on the porcelain tube cylindrical, at resistor core peripheral hardware water jacket, formed water layer, two or more resistor cores are attempted by between the top board of the lower platen that is provided with the inlet opening and apopore, connect by threaded engagement and conductive strips and form upper and lower electrode and constitute.
High power water-cooled resistor of the present utility model is compared with above-mentioned water-cooled wire-wound resistor of the prior art, has following advantage:
Useful life and better reliability---wire-wound resistor adopts superfine alloy filament winding system to form, and reaches 6～10m, may cause defective or damage in preparation of alloy silk and the winding process.Wire-wound resistor is directly invaded in water and is cooled off, and the electric resistance alloy silk has the free metal to disengage, and is corroded.To cause resistive-open after the long-term work, influence water quality.And the membrane type structure that water-cooled resistor of the present utility model adopts the glass glaze film to constitute, matrix surface is covered with the glass glaze film conductive layer that forms through 850 degree high temperature sinterings, even the normal use that indivedual point defects can not influence resistance occurs, so the water-cooled wire-wound resistor is not suitable for being applied under the situation of reliability requirement height, life time length;
The high-voltage pulse performance is good---and wire-wound resistor of the prior art directly cools off, and can guarantee operate as normal when operating on low voltage and water quality are better, but high-voltage pulse, and the hidden danger of breakdown between adjacent turns is arranged when especially following deteriorating water quality;
Inductance value is little---and water-cooled resistor of the present utility model adopts the structure of surperficial monolithic conductive, Multi-layer Parallel, and inductance value is extremely low distributed inductance, within 100nH;
Summation watt rating is than high---wire-wound resistor is limited by alloy strip resistance rate, for guarantee reliability select the band of larger sectional area for use after resistance wire length will increase volume increase, and water-cooled resistor of the present utility model is not limited by resistivity, designs more flexible.On the summation watt rating ratio, surpass wire-wound resistor;
And high-power wire-wound resistor of the prior art in use has open circuit, influences problems such as water quality.
High power water-cooled resistor of the present utility model adopts PPS (polyphenylene sulfide) material to make insulation crust, and resistor mechanical strength, heat resistance are increased substantially, and is easy to injection moulding processing.When cut off the water supply, when transshipping, power-type resistance will produce a large amount of high-temperature water vapors, adopt the PPS shell, resistive element is difficult for damaging because of thermal deformation causes resistance, reliability increases substantially, and is better than PVDF (Kynoar) material.
The utility model content
For solving the above-mentioned defective of prior art, the utility model proposes the high power water-cooled resistor that a kind of thermal diffusivity is good, noninductive, can directly contact with water.
The utility model is achieved through the following technical solutions: a kind of high power water-cooled resistor, the resistive element that comprises insulation crust and place insulation crust, it is characterized in that: described resistive element comprises resistive layer and resistance substrate, described resistive layer places between two resistance substrates, the outside at two resistance substrates respectively is provided with a cooling-water duct, the water inlet of described cooling-water duct and delivery port all are located on the insulation crust, and described resistive layer is connected with resistance terminals on being located at insulation crust.
Wherein, described resistive layer adopts series, parallel or series-parallel mode to constitute by four-layer glass glaze film.
Wherein, the two ends of described resistive element seal by sealing ring respectively.
Wherein, the water inlet of described cooling-water duct and delivery port are located at the bottom of insulation crust, and described resistance terminals are located at the top of insulation crust.
Wherein, described insulation crust adopts polyphenylene sulfide plastic to make.
Wherein, described insulation crust is made up of protecgulum, bonnet, top cover and bottom four parts, connects by hinge between the each several part.
The beneficial effects of the utility model are:
1) internal electrical resistance body of the present utility model adopt the glass glaze film as resistive layer and its both sides with the structure of resistance substrate, adopt the mode of direct water-cooling to cool off, the thermal resistance between resistive element and the water is extremely low, heat exchange area increases.Reduce significantly with active component temperature under the constant power, so this type water-cooled resistor has the highest power to volume ratio.Because the cooling-water duct volume in this resistor is bigger, when cutting off the water supply test, have advantage, be very suitable for the high-power occasion.
2) entery and delivery port of the present utility model all is positioned at the bottom of water-cooled resistor, is convenient to the layout of cooling-water duct, and the resistance terminals are located at the top of resistance, can not clash with cooling-water duct, and internal structure is clear, convenient wiring, wiring.
3) insulation crust of the present utility model adopts the PPS plastics, and any surface finish is attractive in appearance, and intensity is very big, can bear 2Mpa hydraulic pressure, and shell adopts split-type structural and by the precision die moulding, assembling back hinge connects, and the outward appearance exquisiteness is convenient and practical.
Description of drawings
Fig. 1 is a front view of the present utility model;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is internal structure schematic diagram of the present utility model (being the cooling principle schematic diagram);
Fig. 4 is the A portion enlarged drawing among Fig. 3;
Among the figure: 1-resistance terminals, 2-hinge, 3-water inlet, 4-delivery port, 5-base, 6-insulation crust, 61-protecgulum, 62 bonnets, 63-top cover, 64-bottom, 7-cooling-water duct, 8-sealing ring, 9-resistive layer, 10-resistance substrate.
Embodiment
Below in conjunction with accompanying drawing damped resistor of the present utility model is further described in detail.
This routine described high power water-cooled resistor comprises insulation crust 6 and the resistive element that is arranged in the insulation crust 6, and this resistor adopts the mode of direct water-cooling to cool off.
As shown in Figure 1, 2, insulation crust 6 adopts polyphenylene sulfide (pps) plastics, mainly is made up of protecgulum 61, bonnet 62, top cover 63 and bottom 64 4 parts, connects by hinge 2 between the each several part.The top of insulation crust is provided with resistance terminals 1, is provided with the water inlet 3 and the delivery port 4 of cooling-water duct bottom it, and the bottom of described insulation crust 6 is supported by base 5.
Shown in Fig. 3,4, resistive element comprises resistive layer 9 and resistance substrate 10, resistive layer 9 places between two resistance substrates 10, resistive layer 9 is connected with the resistance terminals 1 that are located at the insulation crust top by lead (this lead is good to adopt the copper facing aluminum steel), resistive layer in this example is made of the mode that four-layer glass glaze resistive film adopts series and parallel to combine, wherein the power of every layer of resistive film reaches 1500W at least, thereby can be made into Power Resistor.
Respectively be provided with a cooling-water duct 7 in the outside of two resistance substrates 10, water flowing in two cooling-water ducts 7, so that the heat of resistive element generation is in time taken away, the both sides of resistive element seal by sealing ring 8 respectively.Water flows to from the water inlet 3 of every cooling-water duct 7, flow out from delivery port 4, the direction of arrow shown in Fig. 3 is the flow direction of cooling-water duct 7 water, can make this damped resistor the time have greater advantage again in order promptly to reach better heat radiating effect, the cumulative volume of two water that cooling-water duct holds is designed to more than 5 times of resistive element volume in outage.
Connected mode (comprising series, parallel or connection in series-parallel) by control glass glaze film in this example reaches different resistances, comes the controlled water flow amount by the size of water inlet 3 and delivery port 4, thus the power of controlling resistance.Four parts of resistor are by the precision die moulding, and outward appearance is by hinge 2 no soldereds; Insulation crust 6 adopts white high strength PPS engineering plastics, and its smooth surface can be born the hydraulic pressure of 2Mpa.
Water-cooled resistor peak power under the situation of discharge abundance of employing said structure can reach and be highly suitable for graceful large-power occasions more than the 6kW, be particularly useful for high voltage direct current transmission converter valve, in addition because this resistor interior layout is reasonable, so simple in structure, easy to use.
Should be noted that at last: above embodiment only is not intended to limit in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to the foregoing description, those of ordinary skill in the field are to be understood that: still can make amendment or be equal to replacement embodiment of the present utility model, and do not break away from any modification of the utility model spirit and scope or be equal to replacement, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (6)
1. high power water-cooled resistor, the resistive element that comprises insulation crust and place insulation crust, it is characterized in that: described resistive element comprises resistive layer and resistance substrate, described resistive layer places between two resistance substrates, the outside at two resistance substrates respectively is provided with a cooling-water duct, the water inlet of described cooling-water duct and delivery port all are located on the insulation crust, and described resistive layer is connected with resistance terminals on being located at insulation crust.
2. high power water-cooled resistor as claimed in claim 1 is characterized in that: described resistive layer adopts series, parallel or series-parallel mode to constitute by four-layer glass glaze film.
3. high power water-cooled resistor as claimed in claim 1 is characterized in that: the two ends of described resistive element seal by sealing ring respectively.
4. high power water-cooled resistor as claimed in claim 1 is characterized in that: the water inlet of described cooling-water duct and delivery port are located at the bottom of insulation crust, and described resistance terminals are located at the top of insulation crust.
5. high power water-cooled resistor as claimed in claim 1 is characterized in that: described insulation crust adopts polyphenylene sulfide plastic to make.
6. as claim 1 or 5 described high power water-cooled resistors, it is characterized in that: described insulation crust is made up of protecgulum, bonnet, top cover and bottom four parts, connects by hinge between the each several part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202427865U CN201758061U (en) | 2010-06-30 | 2010-06-30 | High-power water-cooled resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202427865U CN201758061U (en) | 2010-06-30 | 2010-06-30 | High-power water-cooled resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201758061U true CN201758061U (en) | 2011-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202427865U Expired - Lifetime CN201758061U (en) | 2010-06-30 | 2010-06-30 | High-power water-cooled resistor |
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| Country | Link |
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| CN (1) | CN201758061U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103106987A (en) * | 2011-11-14 | 2013-05-15 | 科瑞索电阻器有限公司 | Liquid-cooled resistor device |
| CN103400670A (en) * | 2013-07-17 | 2013-11-20 | 上海鹰峰电子科技有限公司 | Novel cylindrical water-cooled resistor |
| CN105280352A (en) * | 2015-10-16 | 2016-01-27 | 苏州腾冉电气设备股份有限公司 | Water-cooled reactor with side plates |
| CN115206606A (en) * | 2022-08-23 | 2022-10-18 | 福建省志骐电子科技有限公司 | Insulating type water-cooling resistor and insulating structure of water-cooling resistor |
-
2010
- 2010-06-30 CN CN2010202427865U patent/CN201758061U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103106987A (en) * | 2011-11-14 | 2013-05-15 | 科瑞索电阻器有限公司 | Liquid-cooled resistor device |
| CN103106987B (en) * | 2011-11-14 | 2018-04-13 | 科瑞索电阻器有限公司 | Liquid-cooling type electrical resistor |
| CN103400670A (en) * | 2013-07-17 | 2013-11-20 | 上海鹰峰电子科技有限公司 | Novel cylindrical water-cooled resistor |
| CN105280352A (en) * | 2015-10-16 | 2016-01-27 | 苏州腾冉电气设备股份有限公司 | Water-cooled reactor with side plates |
| CN115206606A (en) * | 2022-08-23 | 2022-10-18 | 福建省志骐电子科技有限公司 | Insulating type water-cooling resistor and insulating structure of water-cooling resistor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140328 Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140328 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100192 HAIDIAN, BEIJING TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140328 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: China Electric Power Research Institute Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Patentee before: China Electric Power Research Institute |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110309 |
|
| CX01 | Expiry of patent term |