CN217849710U - Silicon carbide rod with cold end holes - Google Patents
Silicon carbide rod with cold end holes Download PDFInfo
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- CN217849710U CN217849710U CN202221187162.7U CN202221187162U CN217849710U CN 217849710 U CN217849710 U CN 217849710U CN 202221187162 U CN202221187162 U CN 202221187162U CN 217849710 U CN217849710 U CN 217849710U
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Abstract
The utility model relates to a foraminiferous elema of cold junction, include two cold junctions of being connected with power electrode, connect the portion of generating heat between two cold junctions, its technical essential is: the cold end is provided with two through holes which are symmetrically arranged, the central lines of the two through holes are superposed with each other and are parallel to the horizontal plane, the two ends of the protective gas vent pipe are arranged outside the cold end after penetrating through the two through holes, the position of the protective gas vent pipe inside the cold end is provided with a plurality of radial holes, the radial holes are communicated with the inside of the cold end and the inside of the heating part, a sealing element is arranged between the outer wall of the protective gas vent pipe and the through holes of the cold end, and the protective gas vent pipe and the sealing element are both insulating elements; the periphery of the cold end is fixed with a hoop, the opening side of the hoop faces upwards, one free end of the hoop is provided with an upward extending portion, and the tail end of the upward extending portion is provided with a hook-shaped mounting ring. The utility model provides a current elema inner wall serious problem of oxidation in the use, increase of service life greatly, simultaneously easy to assemble, labour saving and time saving.
Description
Technical Field
The utility model relates to a nonmetal electric heating element elema technical field, concretely relates to foraminiferous elema of cold junction.
Background
The silicon carbide rod is a rod-shaped or tubular non-metal high-temperature electric heating element which is prepared by processing high-purity green hexagonal silicon carbide serving as a main raw material according to a certain material ratio to prepare a blank, and carrying out high-temperature silicification at 2200 ℃ and recrystallization sintering. The normal use temperature in oxidizing atmosphere can reach 1450 deg.C, and the continuous use time can reach 2000 hr. The non-metallic electric heating element is widely applied to the high-temperature fields of electronics, magnetic materials, powder metallurgy, ceramics, glass, semiconductors, analytical tests, scientific research and the like, and becomes a non-metallic electric heating element of tunnel kilns, roller kilns, glass kilns, vacuum furnaces, muffle furnaces, smelting furnaces and various heating devices.
The existing silicon carbide rod comprises two cold ends connected with a power supply electrode and a heating part connected between the two cold ends. The following problems exist during the operation: 1. after long-term heating work, the inner wall of the silicon carbide rod is seriously oxidized, so that the service life of the silicon carbide rod is limited; 2. when the silicon carbide rod is used, a plurality of silicon carbide rods are usually connected in a row, and the installation and operation are troublesome and time-consuming.
Disclosure of Invention
The utility model aims at providing a rational in infrastructure, use reliable foraminiferous elema of cold junction, solve the serious problem of current elema inner wall oxidation in the use, increase of service life greatly, while is easy to assemble, labour saving and time saving.
The technical scheme of the utility model is that:
the utility model provides a foraminiferous elema of cold junction, includes two cold junctions of being connected with power electrode, connects the portion of generating heat between two cold junctions, and its technical essential is: the cold end is provided with two through holes which are symmetrically arranged, the central lines of the two through holes are superposed with each other and are parallel to the horizontal plane, the two ends of the protective gas vent pipe are arranged outside the cold end after penetrating through the two through holes, the position of the protective gas vent pipe inside the cold end is provided with a plurality of radial holes, the radial holes are communicated with the inside of the cold end and the inside of the heating part, a sealing element is arranged between the outer wall of the protective gas vent pipe and the through holes of the cold end, and the protective gas vent pipe and the sealing element are both insulating elements; an anchor ear is fixed on the periphery of the cold end, the opening side of the anchor ear faces upwards, one free end of the anchor ear is provided with an upward extending portion, and the tail end of the upward extending portion is provided with a hook-shaped mounting ring.
The cold end surface of the cold end silicon carbide rod with the holes is provided with the safety valve, so that air leakage protection is realized when the air pressure in the silicon carbide rod is too high.
The inner wall of the heating part is provided with the anti-oxidation coating, so that the service life of the silicon carbide rod is further prolonged.
The foraminiferous elema of foretell cold junction, the protective gas breather pipe of two cold junction installations, one of them is the intake pipe, and another is the outlet duct, and adjacent two the intake pipe of elema utilizes the connecting piece to connect and communicate, and the outlet duct of two adjacent elema utilizes the connecting piece to connect and communicate, and the intercommunication has circulative cooling system between the intake pipe entry of first elema and its outlet duct export, the terminal shutoff of intake pipe and the terminal outlet duct of last elema.
Foretell foraminiferous elema of cold junction, the portion surface that generates heat is equipped with two heliciform recesses to increase heat radiating area, improve the efficiency that generates heat.
The center lines of the hook-shaped mounting rings on the two cold ends are overlapped, and the center line of the hook-shaped mounting ring is perpendicular to the center line of the protective gas vent pipe.
The technical effects of the utility model are that:
1. during the use, let in protective gas in to the heating portion through the protective gas breather pipe of a cold junction, it is serious to avoid high temperature lower elema inner wall oxidation, and the protective gas breather pipe of another cold junction of protective gas rethread draws out, but protective gas cyclic utilization has solved the serious problem of current elema inner wall oxidation in the use, increase of service life greatly.
2. The hook-shaped mounting ring of the hoop is matched with the horizontal mounting column of the furnace body, so that the installation is convenient, the support is stable, and the time and the labor are saved.
3. When the silicon carbide rod allies oneself with row installation, the protective gas breather pipe on two adjacent silicon carbide rods utilizes the connecting piece to connect and feed through, guarantees to let in protective gas simultaneously to a plurality of silicon carbide rod insides, realizes the protection simultaneously, when a plurality of silicon carbide rod equipment simultaneously, utilizes protective gas breather pipe to guarantee the unanimous relation of level each other, easy to assemble.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
fig. 2 is a top view of fig. 1.
In the figure: 1. the heat exchanger comprises a hoop, 2 cold ends, 3 sealing pieces, 4 protective gas vent pipes, 5 radial holes, 6 connecting pieces, 7 safety valves, 8 hook-shaped mounting rings, 9 heating parts, 10 double-spiral grooves, 11 circulating pumps, 12 heat exchangers and 13 air supply pipelines.
Detailed Description
As shown in fig. 1 and 2, the cold-end silicon carbide rod with holes comprises two cold ends 2 connected with power supply electrodes and a heating part 9 connected between the two cold ends 2. Wherein, cold junction 2 is equipped with two symmetrical arrangement's through-hole, and the central line of two through-holes coincides each other and is parallel with the horizontal plane, and cold junction 2 outsides are arranged in at both ends behind the protective gas breather pipe 4 passing two through-holes, protective gas breather pipe 4 is located the inside position of cold junction 2 and is equipped with a plurality of radial holes 5, radial hole 5 and the inside intercommunication of cold junction 2 inside and the portion 9 that generates heat. Be equipped with sealing member 3 between the through-hole of 4 outer walls of protective gas breather pipes and cold junction 2, protective gas breather pipe 4 and sealing member 3 are the insulating part. An anchor ear 1 is fixed on the periphery of the cold end 2, the opening side of the anchor ear 1 faces upwards, one free end of the anchor ear 1 is provided with an upward extending part, and the tail end of the upward extending part is provided with a hook-shaped mounting ring 8.
In this embodiment, a cold junction surface is equipped with relief valve 7 in two cold junctions 2 to when atmospheric pressure was too high in the elema, the protection of leaking gas. The inner wall of the heating part 9 is provided with an anti-oxidation coating, so that the service life of the silicon carbide rod is further prolonged. The surface of the heating part 9 is provided with double spiral grooves 10 to increase the heat dissipation area and improve the heating efficiency. The central lines of the hook-shaped mounting rings 8 on the two cold ends 2 are overlapped, and the central line of the hook-shaped mounting ring 8 is vertical to the central line of the protective gas vent pipe 4.
And the two cold ends 2 are provided with protective gas vent pipes 4, one of which is an air inlet pipe, and the other is an air outlet pipe. During the use, a plurality of elema allies oneself with to arrange and install in the furnace body, adjacent two the intake pipe of elema utilizes connecting piece 6 to connect and communicate, and the outlet duct of two adjacent elema utilizes connecting piece 6 to connect and communicate, and the intercommunication has circulative cooling system between the intake pipe entry of first elema and its outlet duct export, and the terminal shutoff of intake pipe and the terminal of outlet duct of last elema. The circulating cooling system comprises a circulating pump 11 and a heat exchanger 12, and protective gas is led out and then enters the heat exchanger 12, and then enters the silicon carbide rod through the circulating pump 11. The circulating cooling system is also communicated with an air supplementing pipeline 13. The heat exchanged by the heat exchanger 12 can be used for other production and can be used for waste heat utilization.
The above detailed description of the embodiments of the present invention is only for the purpose of describing the preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.
Claims (6)
1. The utility model provides a foraminiferous elema of cold junction, includes two cold junctions of being connected with power electrode, connects the portion that generates heat between two cold junctions, its characterized in that: the cold end is provided with two through holes which are symmetrically arranged, the central lines of the two through holes are superposed with each other and are parallel to the horizontal plane, the two ends of the protective gas vent pipe are arranged outside the cold end after penetrating through the two through holes, the position of the protective gas vent pipe inside the cold end is provided with a plurality of radial holes, the radial holes are communicated with the inside of the cold end and the inside of the heating part, a sealing element is arranged between the outer wall of the protective gas vent pipe and the through holes of the cold end, and the protective gas vent pipe and the sealing element are both insulating elements; an anchor ear is fixed on the periphery of the cold end, the opening side of the anchor ear faces upwards, one free end of the anchor ear is provided with an upward extending portion, and the tail end of the upward extending portion is provided with a hook-shaped mounting ring.
2. The cold end silicon carbide rod with holes as claimed in claim 1, wherein: and a safety valve is arranged on the surface of one of the two cold ends.
3. The cold-end silicon carbide rod with holes as claimed in claim 1, wherein: the inner wall of the heating part is provided with an anti-oxidation coating.
4. The cold-end silicon carbide rod with holes as claimed in claim 1, wherein: the protective gas breather pipe of two cold junction installations, one is the intake pipe, and the other is the outlet duct, and two adjacent the intake pipe of elema utilizes the connecting piece to connect and communicate, and the outlet duct of two adjacent elema utilizes the connecting piece to connect and communicate, and the intercommunication has the circulative cooling system between the intake pipe entry of first elema and its outlet duct export, and the terminal shutoff of intake pipe and the terminal outlet duct of last elema.
5. The cold end silicon carbide rod with holes as claimed in claim 1, wherein: the surface of the heating part is provided with double spiral grooves.
6. The cold-end silicon carbide rod with holes as claimed in claim 1, wherein: the central lines of the hook-shaped mounting rings on the two cold ends are overlapped, and the central lines of the hook-shaped mounting rings are vertical to the central line of the protective gas vent pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221187162.7U CN217849710U (en) | 2022-05-18 | 2022-05-18 | Silicon carbide rod with cold end holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221187162.7U CN217849710U (en) | 2022-05-18 | 2022-05-18 | Silicon carbide rod with cold end holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217849710U true CN217849710U (en) | 2022-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221187162.7U Active CN217849710U (en) | 2022-05-18 | 2022-05-18 | Silicon carbide rod with cold end holes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217849710U (en) |
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2022
- 2022-05-18 CN CN202221187162.7U patent/CN217849710U/en active Active
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