CN205090808U - High voltage combination formula resistance furnace of compact - Google Patents
High voltage combination formula resistance furnace of compact Download PDFInfo
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- CN205090808U CN205090808U CN201520869770.XU CN201520869770U CN205090808U CN 205090808 U CN205090808 U CN 205090808U CN 201520869770 U CN201520869770 U CN 201520869770U CN 205090808 U CN205090808 U CN 205090808U
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Abstract
The utility model provides a high voltage combination formula resistance furnace of compact, includes that resistance heater, furnace construction, the fin nest of tubes, the sealed cavity of conduction oil system, 10kv-220kv electric pressure constitutes, its technical essential is: the fin nest of tubes comprises heat absorption and conduction part, and the heat absorption part is established the seamless steel pipe with heat preservation housing seal who stretches out the heat preservation casing by many both ends along heat preservation casing concentric circles align to grid in the furnace construction and is formed, insulation system comprises sealed cavity, sulfur hexafluoride gas, line terminal, connecting wire, leading -out terminal, sealed cavity is that the gaseous metal tubulose solid of sulfur hexafluoride is packed to airtight the installation on resistance furnace unit apron, in the line terminal was provided in a side of sealed cavity, the insulating tube or the insulating disc of taking the punching electric conductor that can prevent that the interior conduction oil of furnace body from revealing was gone up to resistance furnace unit apron, leading -out terminal is provided in a side of can connect on the sealed cavity and draws high tension cable and the insulation support of metal bare wire to high voltage power supply.
Description
Technical field
The utility model relates to a kind of compact high voltage composition electric resistance furnace, particularly relate to a kind of Combined resistance furnace apparatus of 10kv ~ 220kv electric pressure plant-grid connection box-like time, between mounting distance and operating voltage have nothing to do.
Background technology
Existing high-tension resistive stove heat-exchange system, as application publication number a kind of Combined vertical thermal resistance stove disclosed in the patent of invention of CN103759542A, it is made up of heating unit group and heat-exchange system.Heating unit group is made up of several electrical resistor heating element; Electrical resistor heating element is made up of unit housings, resistance heater elements, insulated heat-conducting medium, closed cavity, medium delivery outlet, medium input port and heat-insulation layer; Resistance heater elements is made up of the structural member of metal wire rod and support, fixing conductive exothermal metal wire rod; Heat-exchange system is made up of some groups of medium circulation pumps, media heat exchanger and thermal cycle pipeline.Although this technical scheme can realize electric heating conversion preferably, but the power access end due to contact resistance heater block continues to use common oil-immersed power transformer installing insulating terminal on housing, make power access end in atmosphere exposed, when wiring installed by some resistance furnaces, the installation interval of power access end must be reserved, along with the rising of voltage, for avoiding the generation of electric arc between adjacent resistor stove, the interval between each resistance furnace will certainly be improved further, cause floor space excessive.For solving the problem, propose following technical scheme.
Utility model content
The purpose of this utility model is to provide a kind of compact high voltage composition electric resistance furnace, fundamentally solve existing high-tension resistive stove heat-exchange system floor space large, the problem of poor stability, it is low that it has improvement cost, fast easy to assembly, the advantages such as running safety and stability.
The utility model provides following technical scheme for achieving the above object: a kind of compact high voltage composition electric resistance furnace, comprises heat-conducting oil system, the resistance heater of 10kv ~ 220kv electric pressure, furnace binding, finned tube group, closed cavity formation; Its technical essential is: finned tube group is made up of heat absorption and conduction portion, and heat absorbing part is located at the interior seamless steel pipe sealed with insulation shell that is that to stretch out insulation shell along the two ends that insulation shell concentric circles is evenly distributed by many of furnace binding and forms; Insulation system is made up of closed cavity, sulfur hexafluoride gas, terminals of connecting wire, connection wire, leading-out terminal; Closed cavity is airtightly arranged on the tubular metal solid of resistance furnace unit cover being filled sulfur hexafluoride gas; Terminals of connecting wire is located in closed cavity, resistance furnace unit cover can prevent insulation tube or the insulating disc of the band punching electric conductor that conduction oil is revealed in body of heater; Leading-out terminal is located at the insulating sleeve that closed cavity can connect and draw high-tension cable and the paramount voltage source of metal bare wire; Connecting wire is be located at the metallic conductor between closed cavity intraconnections terminal and leading-out terminal.
Described resistance heater part is immersed in insulated heat-conducting medium, by the metal wire rod of conductive exothermal, band and support, fixing conductive exothermal metal can be stablized in insulated heat-conducting medium, make to have between conductive exothermal metal pair housing structural member tolerate specified power-frequency voltage insulating capacity and form.
Described furnace binding is made up of every cylinder, sealing ring, cover plate insulation shell, convection current; Convection current every cylinder be the tubular body that metallic plate that upper and lower two ends are evenly distributed with conduction oil circulation through hole is made; Insulation shell, sealing ring, cover plate form the solid container meeting splendid attire insulating heat-conductive oil require.
Described finned tube group conduction portion is made up of high-temperature water outlet, water at low temperature entrance, high-temperature water connecting leg, water at low temperature connecting leg, is to be located at the metal tube that the outer and finned tube group Two-port netwerk of insulation shell is welded to connect.
Metal wire rod, band in described resistance heater part, make with metallic copper, aluminium, iron, chromium, nickel and alloy thereof.
Structural member in described resistance heater part, makes of insulating ceramics, macromolecular material, shape.
Described heat-conducting oil system is made up of conduction oil inlet, conduction oil overfall, high-order oil expansion tank, fuel reserve tank, oil return opening, filter, filling pump, conduction oil oil spilling entrance, conduction oil delivery outlet; In heat-conducting oil system, conduction oil inlet is connected in parallel with conduction oil delivery outlet, conduction oil overfall is connected in parallel with conduction oil oil spilling entrance, conduction oil drain tap is connected with conduction oil fuel reserve tank, filter is connected with fuel reserve tank sidewall, filling pump entrance is connected with filter, and filling pump outlet is connected with conduction oil delivery outlet.
Described heat-conducting oil system is made up of conduction oil inlet, conduction oil overfall, high-order oil expansion tank, fuel reserve tank, oil return opening, filter, filling pump, conduction oil oil spilling entrance, conduction oil delivery outlet; In heat-conducting oil system, conduction oil inlet is connected in parallel with conduction oil delivery outlet, conduction oil overfall is connected in parallel with conduction oil oil spilling entrance, conduction oil drain tap is connected with conduction oil fuel reserve tank, filter is connected with fuel reserve tank sidewall, filling pump entrance is connected with filter, and filling pump outlet is connected with conduction oil delivery outlet.
The beneficial effects of the utility model are: owing to have employed high-tension electricity as thermal source, adopt 3 ~ 150(1 < n < 50 under normal circumstances) platform resistance furnace unit can meet the heating demands of any one location (industrial working, residential communities, business office building etc.) completely.Conduction oil can meet the insulating requirements that resistance heater works under high voltage condition.Conduction oil larger for the temperature difference separates every cylinder by the convection current arranged in insulation shell, enhances the thermal cycle power of conduction oil dexterously.The structure welding point of finned tube group is all positioned at hull outside, avoids leaking in housing because weld defect causes, and destroys the dielectric strength of conduction oil.Terminals of connecting wire, the wire of resistance heater are all arranged in closed cavity, especially when 66kv above works, ensure that the safety and stability of running.Directly by changing the annexation of closed cavity internal wiring terminal, and then can change the series and parallel relation of electro-resistive heating element power supply wiring, reliably flexible for installation, safety coefficient is high, reduces floor space simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of resistance furnace unit of the present utility model;
Fig. 2 is the main TV structure schematic diagram of structure of the utility model finned tube group;
Fig. 3 is the plan structure schematic diagram of Fig. 2;
Fig. 4 is the operation principle schematic diagram of Fig. 3 internal heat circulation;
Fig. 5 is the syndeton schematic diagram of the utility model heat-exchange system.
Description of reference numerals:
In Fig. 1: 1 electric resistance heating assembly, 2 housings, 3 conduction oils, 4 convection current are every cylinder, 5 cryotronls, 6 conduction oil inlets, 7 terminals of connecting wires, 8 wires, 9 sulfur hexafluoride gas, 10 closed cavities, 11 water at low temperature entrances, 12 sealing rings, 13 fins, 14 cover plates, 15 high-temperature pipes, 16 conduction oil overfalls, 17 high-temperature water outlets, 18 oil expansion tanks, 19 liquid spill-ways, 20 fuel reserve tanks, 21 filters, 22 filling pumps, 23 liquid return holes;
In Fig. 2: 4 convection current every cylinder, 11 water at low temperature entrances, 15 high temperature connecting legs, 17 high-temperature water outlet;
In Fig. 3: 2 housings, 4 convection current every cylinder, 13 fins;
In Fig. 4: 1 electric resistance heating assembly, 2 housings, 4 convection current are every cylinder;
In Fig. 5: 24 neutral leads, 25 heating units, 26 leading-out terminals, 27 three-phase working power interfaces.
Detailed description of the invention
Below in conjunction with Fig. 1 ~ 5, describe content of the present utility model in detail by specific embodiment.
embodiment 1
As shown in Fig. 1 ~ 4, a kind of employing compact-type high-pressure composition electric resistance furnace, comprises heat-conducting oil system, the resistance heater of 10kv ~ 220kv electric pressure, furnace binding, finned tube group, closed cavity formation.The resistance heater 1 of spacing 10kv ~ 220kv in housing 2, is filled with conduction oil 4 between housing 2 and resistance heater.Resistance heater elements 1 comprise an arbitrary shape can be used for support have tolerate specified power-frequency voltage insulating capacity structural member (structural member shape on heating effect affect almost can ignore, usually cylinder is adopted for reducing manufacturing cost) and the spacing heating wire stablizing conductive exothermal in conduction oil on structural member, heating wire leads to hull outside by terminals of connecting wire 6.Heating wire or terminals of connecting wire 6 all can adopt the wire rod of copper, aluminium, iron, chromium or more than one metal or metal alloy of nickel or band to make, pottery, macromolecular material etc. can be adopted with the insulation fabric part that housing is fixing, because this structure discloses in patent before, no longer elaborate herein.Cover plate 19 seals the upper/lower terminal being arranged on housing respectively by sealing ring 29.Sealing ring 29 can adopt welding or Flange joint at the becket of shell end, also can adopt the nonmetallic materials of corrosion-and high-temp-resistant, as silica gel etc.The cover plate of bottom is provided with conduction oil inlet 11, top blind flange is provided with conduction oil overfall 12, the inner seal of the cover plate of bottom is provided with terminals of connecting wire 6, be provided with the closed cavity 10 being filled with sulfur hexafluoride gas 9 that sealing is arranged outside the cover plate of bottom, the wire of resistance heater passes terminals of connecting wire 6 in closed cavity.Closed cavity 10 preferably seals assembling (as welding or the Flange joint) tubular structure in bottom cover plate.
Heat-conducting oil system comprises oil expansion tank 21 liquid outlet and is provided with filling pump 27 fuel reserve tank 24, between housing 2, oil expansion tank 21, fuel reserve tank 24, circulate conduction oil 4.The outlet end of filling pump 27 is communicated with the conduction oil inlet 11 in bottom cover plate, and the inlet of oil expansion tank 21 is connected with the conduction oil overfall 12 of top blind flange.Oil expansion tank volume is more than or equal to 1/10 of conduction oil cumulative volume, and its sidewall is provided with the liquid spill-way 12 be connected with the liquid return hole 25 of fuel reserve tank.Filter 26 is set between fuel reserve tank 24 and filling pump, contributes to extending maintenance period, reduce maintenance cost.Fuel reserve tank 24 volume is more than or equal to heat conduction BVO.Longitudinal pipe group 8 draws together the high-temperature pipe 15 being provided with high-temperature water outlet, the cryotronl 5 being provided with water at low temperature entrance 11, the circumference that is communicated with cryotronl with high-temperature pipe respectively distribute (for improve heat transfer effect, preferably be uniformly distributed) fin 13(pipe group outside resistance heater elements), fin port extends to outside housing.For improving the heat transfer effect of fin further, preferably fin being made tubular structure, ensureing that it has relatively maximum heat exchange area on arbitrary plane, and helicitic texture is set on fin outer wall, then further increasing its heat exchange area.The convection current axially identical with housing is provided with every cylinder 4 between fin with electric resistance heating assembly, convection current is greater than housing upper and lower opening every cylinder 4 diameter, thus ensureing that housing can play guide effect, convection current is provided with the gap being beneficial to conduction oil and circulating between cylinder about 4 two ends and the inwall of housing.In the process of conduction oil flowing, the helicitic texture of fin outer wall is beneficial to fluid and flows along fin, extends the walking path of conduction oil, makes heat exchange more complete.And adopt semi-enclosed convection current every cylinder, be then beneficial to the heat exchange efficiency improving fin.
When resistance heater elements 1 is energized, the conduction oil 3 of convection current in cylinder 4 is heated and rises to case top, under the guide effect of inner walls, is flowed in the cavity of convection current between cylinder 7 and housing 2 inwall every the space on cylinder 4 top by convection current.Conduction oil expanded by heating, be spilled in oil expansion tank 18 by conduction oil overfall 16, when in oil expansion tank, liquid level is higher than liquid spill-way 19, conduction oil then flows in fuel reserve tank 20, liquid level sensor is provided with in housing, to cause in housing liquid level lower than setting value once conduction oil cooling meat, filling pump starts and is pumped in housing by the conduction oil in fuel reserve tank.By the conduction oil 3 that heats and fin 13(pipe group) in recirculated water generation heat convection, enter heating system through high-temperature water outlet 17 after recirculated water heats up, water at low temperature entrance 11 continues replenishment cycles water.After heat convection, conduction oil 3 returns to the inside of convection current every cylinder 4 by the gap of convection current bottom cylinder 4, is again resistively heated assembly 1 and heats, so move in circles.
embodiment 2
As shown in Figure 5, the present embodiment will further illustrate the concrete structure of the large-scale heat-exchange system be made up of embodiment 1 resistance furnace.This heat-exchange system comprises some heating units 25 be made up of resistance furnace, and the two ends of each heating unit are connected with three-phase working power interface 27 with neutral lead 24 respectively by leading-out terminal 26.Each heating unit comprises two groups of compact high voltage composition electric resistance furnaces, often group comprises some compact high voltage composition electric resistance furnaces of connecting successively (the present embodiment is with three heating units, often organizing four resistance furnaces is example, then can increase and decrease according to actual needs during application, because the heating effect after increase and decrease can be expected, do not enumerating one by one), the wire often organized between adjacent compact high voltage composition electric resistance furnace is interconnected, and wire is all arranged in the closed cavity of filling sulfur hexafluoride gas.Terminals of connecting wire is located at the insulation tube or insulating disc that resistance furnace unit lower cover can prevent the band punching electric conductor that conduction oil is revealed in body of heater.Leading-out terminal is located at the closed cavity that closed cavity can connect and draw high-tension cable and the paramount voltage source of metal bare wire.Wire is located at the metallic conductor between closed cavity intraconnections terminal and leading-out terminal.
Claims (7)
1. a compact high voltage composition electric resistance furnace, comprises heat-conducting oil system, the resistance heater of 10kv ~ 220kv electric pressure, furnace binding, finned tube group, closed cavity formation; It is characterized in that: finned tube group is made up of heat absorption and conduction portion, heat absorbing part is located at the interior seamless steel pipe sealed with insulation shell that is that to stretch out insulation shell along the two ends that insulation shell concentric circles is evenly distributed by many of furnace binding and forms; Insulation system is made up of closed cavity, sulfur hexafluoride gas, terminals of connecting wire, connection wire, leading-out terminal; Closed cavity is airtightly arranged on the tubular metal solid of resistance furnace unit cover being filled sulfur hexafluoride gas; Terminals of connecting wire is located in closed cavity, resistance furnace unit cover can prevent insulation tube or the insulating disc of the band punching electric conductor that conduction oil is revealed in body of heater; Leading-out terminal is located at the insulating sleeve that closed cavity can connect and draw high-tension cable and the paramount voltage source of metal bare wire; Connecting wire is be located at the metallic conductor between closed cavity intraconnections terminal and leading-out terminal.
2. compact high voltage composition electric resistance furnace according to claim 1, it is characterized in that: described resistance heater part is immersed in insulated heat-conducting medium, by the metal wire rod of conductive exothermal, band and support, fixing conductive exothermal metal can be stablized in insulated heat-conducting medium, make to have between conductive exothermal metal pair housing structural member tolerate specified power-frequency voltage insulating capacity and form.
3. compact high voltage composition electric resistance furnace according to claim 1, is characterized in that: described furnace binding is made up of every cylinder, sealing ring, cover plate insulation shell, convection current; Convection current every cylinder be the tubular body that metallic plate that upper and lower two ends are evenly distributed with conduction oil circulation through hole is made; Insulation shell, sealing ring, cover plate form the solid container meeting splendid attire insulating heat-conductive oil require.
4. compact high voltage composition electric resistance furnace according to claim 1, it is characterized in that: described finned tube group conduction portion is made up of high-temperature water outlet, water at low temperature entrance, high-temperature water connecting leg, water at low temperature connecting leg, is be located at the metal tube that the outer and finned tube group Two-port netwerk of insulation shell is welded to connect.
5. compact high voltage composition electric resistance furnace according to claim 1, is characterized in that: metal wire rod, band in described resistance heater part, makes with metallic copper, aluminium, iron, chromium, nickel and alloy thereof.
6. compact high voltage composition electric resistance furnace according to claim 1, is characterized in that: the structural member in described resistance heater part, makes of insulating ceramics, macromolecular material, shape.
7. compact high voltage composition electric resistance furnace according to claim 1, is characterized in that: described heat-conducting oil system is made up of conduction oil inlet, conduction oil overfall, high-order oil expansion tank, fuel reserve tank, oil return opening, filter, filling pump, conduction oil oil spilling entrance, conduction oil delivery outlet; In heat-conducting oil system, conduction oil inlet is connected in parallel with conduction oil delivery outlet, conduction oil overfall is connected in parallel with conduction oil oil spilling entrance, conduction oil drain tap is connected with conduction oil fuel reserve tank, filter is connected with fuel reserve tank sidewall, filling pump entrance is connected with filter, and filling pump outlet is connected with conduction oil delivery outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520869770.XU CN205090808U (en) | 2015-11-04 | 2015-11-04 | High voltage combination formula resistance furnace of compact |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520869770.XU CN205090808U (en) | 2015-11-04 | 2015-11-04 | High voltage combination formula resistance furnace of compact |
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| CN205090808U true CN205090808U (en) | 2016-03-16 |
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| CN201520869770.XU Active CN205090808U (en) | 2015-11-04 | 2015-11-04 | High voltage combination formula resistance furnace of compact |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222598A (en) * | 2015-11-04 | 2016-01-06 | 朱建新 | Compact high voltage composition electric resistance furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222598A (en) * | 2015-11-04 | 2016-01-06 | 朱建新 | Compact high voltage composition electric resistance furnace |
| CN105222598B (en) * | 2015-11-04 | 2018-05-08 | 朱建新 | Compact high voltage composition electric resistance furnace |
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