The conducting rod sealed insulation device of electric furnace and use the electric furnace of this device
Technical field
The present invention relates to a kind of electric furnace, particularly a kind of conducting rod sealed insulation device of electric furnace and use the electric furnace of this device.
Background technology
Electric furnace is domestic firing equipment commonly used in chemical process such as relieving haperacidity, chemical fertilizer at present.Conducting rod is the indispensable parts of electric furnace, it is used to connect the electric heating element of electric furnace inside and the power supply circuits of electric furnace outside, therefore, it must pass the body of heater of electric furnace, has so just produced sealing and Insulation Problems between conducting rod and the body of heater.At present on electric furnace conducting rod sealing problem, all be to adopt the part of passing body of heater simply to coat the way of sealed insulating material at conducting rod, but the problem that this way is easy to generate the longitudinally loosening gas leakage of conducting rod and rotates around the axle center.Rotation can cause producing fracture between the conducting rod and heater element in the stove, makes troubles and economically loss to production.In addition, also there is the problem that is not easy to change conducting rod in said method.
Summary of the invention
For addressing the above problem, the invention provides loosening, the rotational problems of a kind of difficult generation conducting rod, change easily conducting rod electric furnace conducting rod sealed insulation device and use the electric furnace of this device.
The conducting rod sealed insulation device of electric furnace of the present invention comprises conducting rod, and wherein, the tubular fixed sleeving is enclosed within on the described conducting rod, fills and be solidified with refractory seals insulation fixed body between described fixed sleeving and the described conducting rod; The tubular protective casing is fixed on below the described fixed sleeving, is the thermal insulating sleeve pipe of tubular between described protective casing and the described conducting rod, and the fixed bolster below the described thermal insulating sleeve pipe is fixed on the described conducting rod; Being screwed onto described conducting rod nut topmost is fixed on an insulation rainhat on the described fixed sleeving by sealing gasket.
The conducting rod sealed insulation device of electric furnace of the present invention, wherein, square anti-rotation retention plate is fixed on the described conducting rod of described refractory seals insulation fixed body coating.
The conducting rod sealed insulation device of electric furnace of the present invention, wherein, there is anti-rotation groove longitudinally described fixed sleeving inboard.
The conducting rod sealed insulation device of electric furnace of the present invention, wherein, there is horizontal ring-type anti-leak groove described fixed sleeving inboard.
The conducting rod sealed insulation device of electric furnace of the present invention, wherein, described thermal insulating sleeve pipe is formed by former and later two half.
The conducting rod sealed insulation device of electric furnace of the present invention; wherein, the material of described thermal insulating sleeve pipe is a thermostable high-alumina magnesium, and the material of described insulation rainhat is a refractory ceramics; the material of described protective casing is a galvanized steel, and the material of described anti-rotation retention plate is a stainless steel.
The present invention uses the electric furnace of described conducting rod sealed insulation device, comprise body of heater, its both sides are provided with air inlet and gas outlet, at least one cover resistive heating device is housed in the described body of heater, the upper flange of described resistive heating device and the lower flange of described body of heater are fixed together, described resistive heating device comprises that three are shaped as U-shaped heater element from beginning to end, heater element one end is connected with conducting rod respectively, the other end connects into the star current supply circuit, wherein, be welded with vertical loading board below the described upper flange, described resistive heating device also comprises anchor clamps and lower clamp, the described clamping plate of going up anchor clamps and lower clamp are formed by a rectangular plate two otic placodes last with it, all wear on described each otic placode and penetrated positioning screw, be coated with insulating sleeve on the positioning screw, described insulating sleeve is installed on the vertical loading board, in the stainless steel sleeve pipe that weld the bottom, the otic placode of described lower clamp be provided with relative with the positioning screw that passes on, following movable slideway, on described, all wear on the lower clamp and penetrate a long bolt, described long bolt passes the U-shaped end of each heater element, between the heater element on the long bolt, be provided with the spacer insulator skeleton, between the heater element at edge and anchor clamps clamping plate, be provided with the limit insulation framework, be provided with the intermediate insulation skeleton on the long bolt between spacer insulator skeleton and the limit insulation framework, conducting rod passes upper flange, lower flange;
The structure of the conducting rod sealed insulation device of conducting rod is as follows: the tubular fixed sleeving is enclosed within on the described conducting rod, fills and be solidified with refractory seals insulation fixed body between described fixed sleeving and the described conducting rod; The tubular protective casing is fixed on below the described fixed sleeving, is the thermal insulating sleeve pipe of tubular between described protective casing and the described conducting rod, and the fixed bolster below the described thermal insulating sleeve pipe is fixed on the described conducting rod; Being screwed onto described conducting rod nut topmost is fixed on an insulation rainhat on the described fixed sleeving by sealing gasket.
The present invention uses the electric furnace of described conducting rod sealed insulation device, wherein, described intermediate insulation skeleton is the pipe shape, described spacer insulator frame configuration is the pipe shape, its pipe two ends are provided with the groove that matches with the intermediate insulation skeleton, described limit insulation framework is shaped as the pipe shape, and the one end is provided with the groove that matches with the intermediate insulation skeleton.
The present invention uses the electric furnace of described conducting rod sealed insulation device, wherein, a mast-up is installed below the described upper flange, and it comprises four lifting legs being made by shaped steel and the connecting rods that connect four lifting legs, and this mast-up extends to the heater element below.
The present invention uses the electric furnace of described conducting rod sealed insulation device, and wherein, described upper flange upside is provided with the upper flange external thermal insulation, and described upper flange external thermal insulation upside is provided with upper flange and is incubated backplate outward;
The described protective casing of described conducting rod sealed insulation device is welded on the described upper flange, and the part that described protective casing is connected with described fixed sleeving is positioned at described upper flange and is incubated the backplate upside outward;
Described upper flange downside is provided with the upper flange inner thermal insulating layer, and described upper flange inner thermal insulating layer downside is provided with insulation backplate in the upper flange.
The conducting rod sealed insulation device of electric furnace of the present invention and use the described refractory seals insulation fixed body in the electric furnace of this device to add that high-temperature plastic stirs and be cast in the described fixed sleeving by high temperature resistant, the acid and alkali-resistance insulating material root that rubs, through solidifying to form after a while, form one with described fixed sleeving, described conducting rod, so the conducting rod sealed insulation device of electric furnace of the present invention is difficult for producing the longitudinally loosening problem of leaking gas and rotating around the axle center of conducting rod.
The conducting rod sealed insulation device of electric furnace of the present invention and use the electric furnace of this device; because the sealed insulation structure in the described conducting rod outside is divided into two parts up and down; change if desired; weld seam between described fixed sleeving and described protective casing is cut open with gas welding torch; with described fixed sleeving and inclusion and the whole taking-up of described conducting rod; change prefabricated described fixed sleeving and inclusion thereof and described conducting rod again and get final product, it is not only convenient but also simple to change conducting rod.
The conducting rod sealed insulation device of electric furnace of the present invention and use the electric furnace of this device, because square described anti-rotation retention plate is fixed on the described conducting rod of described refractory seals insulation fixed body coating, therefore square described anti-rotation retention plate has played the effect that prevents that further described conducting rod and described refractory seals from insulating and rotating between the fixed body; The vertical described anti-rotation groove of described fixed sleeving inboard has played the effect that prevents that further described fixed sleeving and described refractory seals from insulating and rotating between the fixed body.The horizontal described anti-leak groove of described fixed sleeving inboard makes described refractory seals insulation fixed body produce the endless belt that protrudes in body, and this endless belt can play the effect that prevents that further described conducting rod is longitudinally loosening and leak gas.
Description of drawings
Fig. 1 is that the conducting rod sealed insulation device of electric furnace of the present invention is installed in the cutaway view on the flange;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the A-A profile of Fig. 1;
Fig. 4 is the B-B profile of Fig. 1;
Fig. 5 is the C-C profile of Fig. 1;
Fig. 6 is the D-D profile of Fig. 1;
Fig. 7 is the profile of fixed sleeving;
Fig. 8 is the vertical view of Fig. 7;
Fig. 9 is one a profile in two and half of the thermal insulating sleeve pipes;
Figure 10 is the vertical view of Fig. 9;
Figure 11 is the structural profile schematic diagram that the present invention uses the electric furnace of described conducting rod sealed insulation device;
Figure 12 is the side-looking generalized section of Fig. 2;
Figure 13 is the schematic top plan view of Fig. 2;
Figure 14 is the partial cutaway schematic of Fig. 2 A-A insulation framework and heating plate;
Figure 15 is the last anchor clamps clamp region schematic diagram of the present invention's electric furnace of using described conducting rod sealed insulation device;
Figure 16 is the lower clamp clamp region schematic diagram of the present invention's electric furnace of using described conducting rod sealed insulation device;
Figure 17 is the lower clamp of the present invention's electric furnace of using described conducting rod sealed insulation device and the structural relation schematic diagram of vertical loading board;
Figure 18 is that the present invention uses the insulating sleeve structural representation on the electric furnace otic placode of described conducting rod sealed insulation device.
Embodiment
Below in conjunction with Figure of description to the conducting rod sealed insulation device of electric furnace of the present invention and use the electric furnace of this device to be described further.
Referring to Fig. 1 to Figure 10, the conducting rod sealed insulation device of electric furnace of the present invention, comprise conducting rod 4, wherein, tubular fixed sleeving 42 (Fig. 7,8) is enclosed within on the conducting rod 4, be fixed with the stainless steel anti-rotation retention plate of overlooking to square 43 on the conducting rod 4 in the fixed sleeving 42, fill and be solidified with refractory seals insulation fixed body 45 between fixed sleeving 42 and the conducting rod 4; There are anti-rotation groove 47 and horizontal ring-type anti-leak groove 44 longitudinally in fixed sleeving 42 inboards.Refractory seals insulation fixed body 45 is added that high-temperature plastic stirs and is cast in the fixed sleeving 42 by high temperature resistant, the acid and alkali-resistance insulating material root that rubs, through being solidified to form after a while, form one with fixed sleeving 42, conducting rod 4, anti-rotation retention plate 43, so the conducting rod sealed insulation device of electric furnace of the present invention is difficult for producing the longitudinally loosening problem of leaking gas and rotating around the axle center of conducting rod.
Because square anti-rotation retention plate 43 is fixed on the conducting rod 4 of refractory seals insulation fixed body 45 coatings, therefore square anti-rotation retention plate 43 has played the effect that prevents that conducting rod 4 and refractory seals from insulating and rotating between the fixed body 45; Vertical anti-rotation groove 47 of fixed sleeving 42 inboards has played the effect that prevents that fixed sleeving 42 and refractory seals from insulating and rotating between the fixed body 45.
The horizontal anti-leak groove 44 of fixed sleeving 42 inboards makes refractory seals insulation fixed body 45 produce the endless belt that protrudes in body, and this endless belt can play the effect that prevents that conducting rod 4 is longitudinally loosening and leak gas.
Tubular protective casing 412 is fixed on below the fixed sleeving 42, is the thermal insulating sleeve pipe 46 (Fig. 9,10) of tubular between protective casing 412 and the conducting rod 4, and thermal insulating sleeve pipe 46 following fixed bolsters 48 are fixed on the conducting rod 4; Thermal insulating sleeve pipe 46 longitudinally is divided into former and later two half.The material of thermal insulating sleeve pipe 46 is a thermostable high-alumina magnesium.The material of protective casing 412 is a galvanized steel.
Being screwed onto conducting rod 4 nut 41 topmost is fixed on an insulation rainhat 49 on the fixed sleeving 42 by sealing gasket 410.The material of insulation rainhat 49 is a refractory ceramics.
See also Figure 11, the present invention shown in Figure 12 uses the front view and the end view of the electric furnace of described conducting rod sealed insulation device, this heating furnace comprises body of heater 1, be lifted with the identical resistive heating device of two covers in the body of heater 1, every cover resistive heating device includes flange 2, resistive band 3, conducting rod 4, vertical loading board 5, last anchor clamps 6, lower clamp 7, positioning screw 8, long bolt 9 and heat-insulation layer 10, body of heater 1 both sides are provided with air inlet 11 and gas outlet 12, body of heater 1 upper end adpting flange 2, flange 2 is made up of upper flange 21 and lower flange 22, lower flange 22 is welded on body of heater 1 upper end, upper flange 21 is being welded on the lower flange 22 by electric welding after the heating furnace installation, it can not be out of shape under high-temperature condition and cause leaking gas
Referring to Fig. 1, the structure of conducting rod sealed insulation device is identical with the conducting rod sealed insulation device of above-mentioned electric furnace.Upper flange 21 upsides are provided with the upper flange external thermal insulation 414 that perlite constitutes, and upper flange external thermal insulation 414 upsides are provided with upper flange and are incubated backplate 415 outward; The protective casing 412 of conducting rod sealed insulation device is welded on the upper flange 21, and the part that protective casing 412 is connected with fixed sleeving 42 is positioned at upper flange and is incubated backplate 415 upsides outward; Upper flange 21 downsides are provided with the upper flange inner thermal insulating layer 416 that material is the high alumina insulation quilt, and upper flange inner thermal insulating layer 46 downsides are provided with insulation backplate 417 in the upper flange.
Conducting rod 4 passes flange 2 and heat-insulation layer stretches into body of heater 1 inner chamber, conducting rod 4 next doors are provided with upturning lid formula rainhat 101, upper flange 21 lower ends are hung with three resistive bands 3, it is a U-shaped curve resistance band from beginning to end, one end of three resistive bands 3 is connected with a conducting rod 4 that stretches into body of heater 1 respectively, the other end connects into the star current supply circuit, be welded with four vertical loading boards 5 below the upper flange 21, last anchor clamps 6 and lower clamp 7 profiles are basic identical, as shown in figure 15, two clamping plate 61 of last anchor clamps 6 are formed by white steel plate 611 and two otic placodes 612 on it, otic placode 612 is provided with wears the screw 6121 of penetrating positioning screw 8, as shown in figure 16, two clamping plate 71 of lower clamp 7 are formed by white steel plate 711 and two otic placodes 712 on it, otic placode 712 is provided with positioning screw 8 can wear the slideway 7121 of penetrating and can sliding up and down within it, all be coated with insulating sleeve 81 on each positioning screw 8, clamping plate 61 of last anchor clamps 6 are installed in the stainless steel sleeve pipe 51 of two vertical loading board 5 tops welding by the insulating sleeve on it 81, another clamping plate 61 are welded on two other vertical loading board 5 tops by the insulating sleeve on it 81, two parallel symmetries of clamping plate, in conjunction with shown in Figure 17, lower clamp 7 is welded on below the anchor clamps 6 by 81 correspondences of the insulating sleeve on its clamping plate with quadrat method, it is the bottom of vertical loading board 5, otic placode 612, be respectively equipped with on 712 relative with the positioning screw that passes 8 on it on, following movable slideway 6121,7121, insulating sleeve structural representation as shown in figure 18, insulating sleeve 81 is T shape pipe, positioning screw 8 passes in the insulating sleeve 81 of two bottom butt joints, use in conjunction with the present invention shown in Figure 13 shown in the vertical view of electric furnace of described conducting rod sealed insulation device, wear between two clamping plate 61 of last anchor clamps 6 and penetrate a long bolt 9, wear equally between two clamping plate of lower clamp 7 and penetrate a long bolt 9, long bolt 9 passes the U-shaped end of each resistive band 3, set limit insulation framework 92 between set spacer insulator skeleton 91 and edge resistive band 3 and the clamping plate between the resistive band 3, on the long bolt 9 between spacer insulator skeleton 91 and the limit insulation framework 92, be with intermediate insulation skeleton 93, spacer insulator skeleton 91, limit insulation framework 92 and intermediate insulation skeleton 93 are high magnalium material, one mast-up 23 is installed below the upper flange 21, it comprises four lifting legs being made by shaped steel and the connecting rod that connects four lifting legs, and this mast-up 23 extends to resistive band 3 belows.
Be the partial sectional view of insulation framework and heating plate as shown in figure 14, can see that intermediate insulation skeleton 93 is the pipe shape, spacer insulator skeleton 91 is shaped as the pipe shape, its pipe two ends are provided with the groove 911,912 that matches with the intermediate insulation skeleton, limit insulation framework 92 is shaped as the pipe shape, and the one end is provided with the groove 921 that matches with intermediate insulation skeleton 93.
The conducting rod sealed insulation device of electric furnace of the present invention and use the electric furnace of this device; because the sealed insulation in conducting rod 4 outsides is divided into two parts up and down; change if desired; weld seam between fixed sleeving 42 and protective casing 412 is cut open with gas welding torch; with fixed sleeving 42 and inclusion and conducting rod 4 whole taking-ups; change prefabricated fixed sleeving 42 and inclusion thereof again and conducting rod 4 gets final product, not only convenient but also simple.
The present invention uses the heater element of the electric furnace of described conducting rod sealed insulation device to can be resistance wire or resistive band, its applied range; Because the contact site of heater element is equipped with insulation framework, has avoided the too high danger of blowing heater element of local temperature; Heater element and anchor clamps link together, and when heater element produces when expanding with heat and contract with cold, because anchor clamps are provided with slideway, so heater element can extend along slideway, and have avoided because heater element extends crookedly, and collision causes the heater element short circuit mutually; Suspension place at anchor clamps all is with insulated tube in addition, guarantees that further the heater element under unexpected situation can short circuit; Conducting rod adopts presser type sealing and fixing, the phenomenon of effectively avoiding leaking gas He can not rotating.
The present invention uses the electric furnace of described conducting rod sealed insulation device, owing to increased described flange external thermal insulation and described flange inner thermal insulating layer, has improved the heat insulation effect of electric furnace, has reduced thermal loss.
Above embodiment is described preferred implementation of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that the common engineers and technicians in this area make technical scheme of the present invention all should fall in the definite protection range of claims of the present invention.