CN215529351U - Large-spiral high-density electric heating rod - Google Patents
Large-spiral high-density electric heating rod Download PDFInfo
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- CN215529351U CN215529351U CN202121273089.0U CN202121273089U CN215529351U CN 215529351 U CN215529351 U CN 215529351U CN 202121273089 U CN202121273089 U CN 202121273089U CN 215529351 U CN215529351 U CN 215529351U
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Abstract
The utility model relates to a large-spiral high-density electric heating rod, and belongs to the technical field of electric heating rods. The heating wire device comprises a hollow shell, wherein a positioning core rod and a spiral magnetic piece are arranged in the inner cavity of the shell, the positioning core rod is arranged in the center of the shell, the spiral magnetic piece is sleeved on the positioning core rod, and a heating wire is wound on the spiral magnetic piece; the spiral magnetic piece is vertically provided with a temperature measuring hole and a plurality of conductive holes, a temperature measuring core rod is arranged in the temperature measuring hole, the conductive holes are respectively penetrated with the conductive core rod, one end of the shell covers the sealed magnetic head, and one end part of the conductive core rod and one end part of the temperature measuring core rod are respectively exposed out of the sealed magnetic head. This application has improved the quality of electrical heating stick, has prolonged heating system's life.
Description
Technical Field
The utility model relates to a large-spiral high-density electric heating rod, and belongs to the technical field of electric heating rods.
Background
The electric heating rod is a green heating device for converting electric energy into heat energy, and is widely applied to multiple fields of environmental engineering, aerospace, nuclear industry, military industry, civil industry, petroleum, chemical industry and the like. According to the different materials, the heating device can heat various oil bodies, various gases, and even strong acid and strong alkali mediums. The electric heating rod integrates an automatic temperature control system, and can realize 0-100% temperature control adjustment. The electric heating rod is used as a core component of a heating system and is also the most easily burnt out component. Throughout the failure cases of the whole electric heating industry, whether single electric heating rod, electric heating pipe, cluster type electric heating core or other types of electric heating elements, the failure rate of the electric heating elements accounts for 90% of all failure rates. Therefore, quality problems of the electrical heating rod directly affect the life of the entire heating system.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a large-spiral high-density electric heating rod aiming at the prior art, so that the quality of the electric heating rod is improved, and the service life of a heating system is prolonged.
The technical scheme adopted by the utility model for solving the problems is as follows: a large spiral high-density electric heating rod comprises a hollow shell, wherein a positioning core rod and a spiral magnetic piece are arranged in the inner cavity of the shell, the positioning core rod is arranged in the center of the shell, the spiral magnetic piece is sleeved on the positioning core rod, and a heating wire is wound on the spiral magnetic piece; the spiral magnetic piece is vertically provided with a temperature measuring hole and a plurality of conductive holes, a temperature measuring core rod is arranged in the temperature measuring hole, the conductive holes are respectively penetrated with the conductive core rod, one end of the shell covers the sealed magnetic head, and one end part of the conductive core rod and one end part of the temperature measuring core rod are respectively exposed out of the sealed magnetic head.
The spiral magnetic part is provided with a spiral groove on the surface, and the heating wire is wound in the spiral groove, so that the heating wire is spiral.
The heating wire is made of Ni80Cr 20.
An annular insulating layer is arranged between the shell and the spiral magnetic piece.
The insulating layer is made of magnesium oxide powder.
The sealing magnetic head is made of epoxy resin.
Compared with the prior art, the utility model has the advantages that: the electric heating rod is a high-density single-end electric heating rod, and its internal heating wire is arranged in the form of "large screw ring", and its high-temp. resistance, high-voltage resistance and insulating property are far superior to those of general electric heating rod. This application has improved the quality of electrical heating stick, has prolonged heating system's life.
Drawings
FIG. 1 is a schematic view of a large spiral high density electric heating rod according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is an enlarged view of C in FIG. 2;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1;
in the figure, 1 a shell, 2 an insulating layer, 3 heating wires, 4 spiral magnetic pieces, 5 positioning core rods, 6 sealing magnetic heads, 7 conductive core rods and 8 temperature measuring core rods are arranged.
Detailed Description
The utility model is described in further detail below with reference to the accompanying examples.
As shown in fig. 1, 2, 3 and 4, the large spiral high-density electric heating rod in the present embodiment includes a hollow housing 1. The inner cavity of the shell 1 is provided with a positioning core rod 5 and a spiral magnetic piece 4, the positioning core rod 5 is vertically arranged at the center of the shell 1, and the spiral magnetic piece 4 is sleeved on the positioning core rod 5. Spiral grooves are formed in the surfaces of the spiral magnetic pieces 4, and the heating wires 3 are wound in the spiral grooves, so that the heating wires 3 are spiral. An annular insulating layer 2 is arranged between the spiral magnetic part 4 and the shell 1, and the spiral magnetic part 4 is wrapped by the insulating layer 2. 2 conductive holes and 1 temperature measuring hole are vertically formed in the spiral magnetic piece 4, a conductive core rod 7 penetrates through the conductive holes respectively, and a temperature measuring core rod 8 penetrates through the temperature measuring holes. One end of the shell 4 covers the sealed magnetic head 6, and one end part of the conductive core rod 7 and one end part of the temperature measurement core rod 8 penetrate through the sealed magnetic head 6, so that the end parts of the conductive core rod 7 and the temperature measurement core rod 8 are exposed out of the sealed magnetic head 6.
The shell is made of S31608 stainless steel, has excellent high temperature resistance and corrosion resistance, and has a diameter phi of 30mm after being contracted at a use pressure and a temperature of 20Mpa and 600 ℃.
The heating wire is made of Ni80Cr20, and the material can resist 1200 ℃ of high temperature and has excellent linearity and processing toughness.
The insulating layer is made of electrical grade (99 grade) magnesia powder, the purity can reach 99.7 percent, the ultrahigh purity ensures that the electric heating rod has 2500M omega insulation in a cold state, the dielectric strength test is 2000V/min, and the phenomena of breakdown and flicker are avoided. Even under complex working conditions, such as high temperature of 600 ℃, the insulation resistance can still reach 20M omega.
The sealed magnetic head adopts high-temperature resistant secondary curing insulation sealing (epoxy resin material), can effectively block the moisture absorption of magnesium powder, and avoids the unsafe problems of insulation reduction and leakage current increase of the electric heating rod during long-term work.
The conductive core rod and the temperature measuring core rod are respectively made of S30408 stainless steel and are strong in air corrosion resistance. The common carbon steel electrode can cause loosening of a lead crimping part and oxidation and thinning of the electrode due to rusting, the electrode can generate heat, so that the temperature of a wiring cavity is increased and even exceeds the requirement of T6 group explosion-proof grade, the requirement is not applicable to nuclear industry occasions, and S30408 selected by the application can be used safely without worrying.
The electric heating rod belongs to the single-ended electric heating rod of high density, and its inside heater becomes "big compass" and arranges, and its high temperature resistant, high pressure, high voltage, insulating properties all are superior to ordinary electric bar far away. This application has improved the quality of electrical heating stick, has prolonged heating system's life.
In addition to the above embodiments, the present invention also includes other embodiments, and any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a big spiral high density electrical heating stick which characterized in that: the heating wire device comprises a hollow shell, wherein a positioning core rod and a spiral magnetic piece are arranged in the inner cavity of the shell, the positioning core rod is arranged in the center of the shell, the spiral magnetic piece is sleeved on the positioning core rod, and a heating wire is wound on the spiral magnetic piece; the spiral magnetic piece is vertically provided with a temperature measuring hole and a plurality of conductive holes, a temperature measuring core rod is arranged in the temperature measuring hole, the conductive holes are respectively penetrated with the conductive core rod, one end of the shell covers the sealed magnetic head, and one end part of the conductive core rod and one end part of the temperature measuring core rod are respectively exposed out of the sealed magnetic head.
2. A large spiral high density electric heating rod as claimed in claim 1, wherein: the spiral magnetic part is provided with a spiral groove on the surface, and the heating wire is wound in the spiral groove, so that the heating wire is spiral.
3. A large spiral high density electric heating rod as claimed in claim 2, wherein: the heating wire is made of Ni80Cr 20.
4. A large spiral high density electric heating rod as claimed in claim 1, wherein: an annular insulating layer is arranged between the shell and the spiral magnetic piece.
5. The large spiral high density electric heating rod according to claim 4, wherein: the insulating layer is made of magnesium oxide powder.
6. A large spiral high density electric heating rod as claimed in claim 1, wherein: the sealing magnetic head is made of epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121273089.0U CN215529351U (en) | 2021-06-08 | 2021-06-08 | Large-spiral high-density electric heating rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121273089.0U CN215529351U (en) | 2021-06-08 | 2021-06-08 | Large-spiral high-density electric heating rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215529351U true CN215529351U (en) | 2022-01-14 |
Family
ID=79807205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121273089.0U Active CN215529351U (en) | 2021-06-08 | 2021-06-08 | Large-spiral high-density electric heating rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215529351U (en) |
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2021
- 2021-06-08 CN CN202121273089.0U patent/CN215529351U/en active Active
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