CN201758062U - Integrated direct water-cooling type damping resistor - Google Patents
Integrated direct water-cooling type damping resistor Download PDFInfo
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- CN201758062U CN201758062U CN2010202427973U CN201020242797U CN201758062U CN 201758062 U CN201758062 U CN 201758062U CN 2010202427973 U CN2010202427973 U CN 2010202427973U CN 201020242797 U CN201020242797 U CN 201020242797U CN 201758062 U CN201758062 U CN 201758062U
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- water
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- resistance
- damping
- insulation crust
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Abstract
The utility model relates to an integrated direct water-cooling type damping resistor which comprises an insulating casing and a resistor body arranged in the insulating casing; the resistor body adopts a three-layer structure from the interior to the exterior, wherein, the inner layer is composed of an alumina ceramic plate, the intermediate layer is composed of a damping resistor arranged on the left side of the alumina ceramic plate, and an energy-taking resistor arranged on the right side of the alumina ceramic plate, and the outer layer is composed of two resistor substrates respectively arranged on the left side of the damping resistor and the right side of the energy-taking resistor; a cooling water passage is respectively arranged on the outer sides of the two resistor substrates; both the water inlets and the water outlets of the cooling water passages are formed at the bottom of the insulating casing; the damping resistor is connected with a damping resistor terminal; and the energy-taking resistor is connected with an energy-taking resistor terminal. The damping resistor adopts the structure integrating the damping resistor with the energy-taking resistor and the direct water-cooling manner for cooling, and has the maximum power to volume ratio; the cooling water passages inside the resistor have larger areas, so that the resistor is superior in water break tests and is very applicable to occasions with high voltage and high power.
Description
Technical field
The utility model belongs to the electric power system devices field, is specifically related to a kind of high voltage direct current transmission converter valve integrated direct-water-cooled damping resistor.
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, damping 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 damping 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.
Integrated direct-water-cooled damping resistor of the present utility model is compared with above-mentioned water-cooled wire-wound resistor of the prior art, and glass glaze resistance 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 damping 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 damped 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---and 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 increases, and damped resistor resistance 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.
Integrated direct-water-cooled damping resistor of the present utility model adopts PPS (polyphenylene sulfide) material as sheathing material, 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.Be better than PVDF (Kynoar) material.
The utility model content
For solving the above-mentioned defective of prior art, the utility model proposes the integrated direct-water-cooled damping 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 integrated direct-water-cooled damping resistor, the resistive element that comprises insulation crust and place insulation crust, it is characterized in that: described resistive element adopts three-decker from inside to outside: internal layer is an alumina ceramic plate, the intermediate layer is that be located at the damping resistance in alumina ceramic plate left side and be located at getting of alumina ceramic plate right side can resistance, outer for being located at the damping resistance left side respectively and getting the resistance substrate on energy resistance right side, the outside at two resistance substrates respectively is provided with a cooling-water duct, the water inlet of cooling-water duct and delivery port all are located at the bottom of insulation crust, described damping resistance is connected with damping resistance terminals on being located at insulation crust, and described getting can electric energy be connected with the energy resistance terminals of getting on being located at insulation crust.
Wherein, described damping resistance terminals are positioned at the top of insulation crust, get the sidepiece that energy resistance terminals are positioned at insulation crust.
Wherein, described alumina ceramic plate adopts the thick alumina ceramic plate of 1mm.
Wherein, described damping resistance is the high voltage direct current transmission converter valve damping resistance.
Wherein, described getting can resistance be that high voltage direct current transmission converter valve can resistance with getting.
Wherein, described damping resistance can all adopt the glass glaze membrane structure by resistance with getting.
Wherein, the both sides of described resistive element adopt sealing ring to seal.
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.
Wherein, the cumulative volume of described two water that cooling-water duct holds is more than 5 times of described resistive element volume.
The beneficial effects of the utility model are:
1) damping resistance in the utility model can adopt the glass glaze rete by the resistance bacterium with getting, insulate by alumina ceramic plate between two glass glaze retes, and adopt the direct water-cooling mode to cool off, and the thermal resistance between active component and the water is extremely low, and heat exchange area is also very big.Reduce significantly with active component temperature under the constant power, so this type water-cooled resistance has the highest power to volume ratio, the inner cooling-water duct area of this type resistance is bigger, has advantage when cutting off the water supply test, is highly suitable for the high-power occasion.
2) the utility model can resistance be integrated damping resistance with getting, saved the converter valve space, entery and delivery port all is positioned at the bottom of damped resistor, be convenient to the layout of cooling-water duct, and the damping resistance terminals and get can resistance terminals be located at the top and the sidepiece of resistance respectively, can not clash with cooling-water duct, 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-damping resistance terminals, 2-are got energy resistance terminals, 3-water inlet, the 4-delivery port, 5-hinge, 6-insulation crust, the 61-protecgulum, 62-bonnet, 63-top cover, the 64-bottom, 7-cooling-water duct, 8-sealing ring, the 9-alumina ceramic plate, 10-resistance substrate, 11-damping resistance, 12-gets energy resistance, 13-insulating support.
Embodiment
Below in conjunction with accompanying drawing damped resistor of the present utility model is further described in detail.
Shown in Fig. 1-4, this routine described integrated direct-water-cooled damping resistor comprises insulation crust 6 and the resistive element that is arranged in the insulation crust 6, and this resistive element can resistance be made of one damping resistance with getting, and adopts the mode of direct water-cooling to cool off.
As shown in Figure 1, 2, insulation crust adopts polyphenylene sulfide (pps) plastics, mainly is made up of protecgulum 61, bonnet 62, top cover 63 and bottom 64 4 parts, closely connects by hinge 5 between the each several part.The top of insulation crust is provided with damping resistance terminals 1, its sidepiece is provided with water inlet 3 and the delivery port 4 of getting energy resistance terminals 2, being provided with cooling-water duct bottom it, and the bottom of described insulation crust is supported by insulating support 13.
Shown in Fig. 3,4, the contact site of resistive element and insulation crust adopts sealing ring to seal, resistive element adopts three-decker from inside to outside: internal layer is the thick alumina ceramic plate of 1mm 9, the intermediate layer is that be located at the damping resistance 11 in alumina ceramic plate 9 left sides and be located at getting of alumina ceramic plate right side can resistance 12, outer for be located at the damping resistance left side respectively and get can the resistance right side resistance substrate.Described damping resistance 11 is connected with damping resistance terminals 1 on being located at insulation crust top (being insulation crust top cover 63) by lead, described get can electric energy 12 by lead be located at insulation crust sidepiece (being insulation crust bonnet 62 sides) on get and can be connected by resistance terminals 2, described lead is good with employing copper facing aluminum steel.Described internal layer adopts alumina ceramic plate 9, can make the damping resistance 11 of its left and right sides and get insulation isolation between the energy resistance 12, and dielectric strength can reach 10kV.
Respectively be provided with a cooling-water duct 7 in the outside of two resistance substrates, water flowing in two cooling-water ducts 7 is so that in time take away damping resistance and the heat of getting the generation of energy resistance.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.Damping resistance 11 adopts sealing ring 8 to seal with the contact site of getting energy resistance and insulation crust 6.Adopt the damped resistor of said structure to be very suitable for the high-power occasion, be specially adapted to high voltage direct current transmission converter valve.
Described damping resistance 11 can all adopt the glass glaze rete by resistance 12 with getting, the utility model reaches different resistances by the number of plies and the connected mode between each glass glaze film (comprising series, parallel or connection in series-parallel combination) of control glass glaze film, damping resistance 11 adopts triplex glass glaze film to form by the mode that connection in series-parallel combines in this example, gets and can adopt one deck glass glaze film by resistance.The utility model comes the controlled water flow amount by the size of entery and delivery port, thus the power of controlling resistance.Because the utility model adopts the pps plastics to make insulation crust, make the smooth surface of shell, can bear very high hydraulic pressure.
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 (10)
1. integrated direct-water-cooled damping resistor, the resistive element that comprises insulation crust and place insulation crust, it is characterized in that: described resistive element adopts three-decker from inside to outside: internal layer is an alumina ceramic plate, the intermediate layer is that be located at the damping resistance in alumina ceramic plate left side and be located at getting of alumina ceramic plate right side can resistance, outer for being located at the damping resistance left side respectively and getting the resistance substrate on energy resistance right side, the outside at two resistance substrates respectively is provided with a cooling-water duct, the water inlet of cooling-water duct and delivery port all are located at the bottom of insulation crust, described damping resistance is connected with damping resistance terminals on being located at insulation crust, and described getting can electric energy be connected with the energy resistance terminals of getting on being located at insulation crust.
2. integrated direct-water-cooled damping resistor as claimed in claim 1 is characterized in that: described damping resistance terminals are positioned at the top of insulation crust, get the sidepiece that energy resistance terminals are positioned at insulation crust.
3. integrated direct-water-cooled damping resistor as claimed in claim 2 is characterized in that: described alumina ceramic plate adopts the thick alumina ceramic plate of 1mm.
4. integrated direct-water-cooled damping resistor as claimed in claim 3 is characterized in that: described damping resistance is the high voltage direct current transmission converter valve damping resistance.
5. integrated direct-water-cooled damping resistor as claimed in claim 3 is characterized in that: described getting can resistance be that high voltage direct current transmission converter valve can resistance with getting.
6. integrated direct-water-cooled damping resistor as claimed in claim 3 is characterized in that: described damping resistance can all adopt the glass glaze membrane structure by resistance with getting.
7. as the arbitrary described integrated water-cooled damped resistor of claim 1-6, it is characterized in that: the both sides of described resistive element adopt sealing ring to seal.
8. integrated direct-water-cooled damping resistor as claimed in claim 7 is characterized in that: described insulation crust adopts polyphenylene sulfide plastic to make.
9. integrated direct-water-cooled damping resistor as claimed in claim 8 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.
10. integrated direct-water-cooled damping resistor as claimed in claim 9 is characterized in that: the cumulative volume of described two water that cooling-water duct holds is more than 5 times of described resistive element volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202427973U CN201758062U (en) | 2010-06-30 | 2010-06-30 | Integrated direct water-cooling type damping resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202427973U CN201758062U (en) | 2010-06-30 | 2010-06-30 | Integrated direct water-cooling type damping resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201758062U true CN201758062U (en) | 2011-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202427973U Expired - Lifetime CN201758062U (en) | 2010-06-30 | 2010-06-30 | Integrated direct water-cooling type damping resistor |
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| Country | Link |
|---|---|
| CN (1) | CN201758062U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104376940A (en) * | 2014-12-04 | 2015-02-25 | 国家电网公司 | Novel water-cooled resistor for high-voltage direct-current converter valve |
-
2010
- 2010-06-30 CN CN2010202427973U patent/CN201758062U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104376940A (en) * | 2014-12-04 | 2015-02-25 | 国家电网公司 | Novel water-cooled resistor for high-voltage direct-current converter valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110309 |
|
| CX01 | Expiry of patent term |