Electric heating tube with good heat conduction effect

Abstract

The utility model discloses an electric heating tube with a good heat conduction effect, which belongs to the technical field of electric heating tubes and comprises an electric heating tube structure, a coil pipe component comprises a heat transfer tube and heat preservation tubes arranged at two ends of the heat transfer tube, the heat preservation tubes penetrate through the outer side of a tube body, and each heat preservation tube comprises a heat insulation tube and a connecting tube arranged on the inner side of the heat insulation tube. A heat preservation layer is arranged between the heat insulation pipe and the connecting pipe, the medium is hydrogen or methane, the medium is located in the coil pipe component and does not make contact with the pipe body, the safety of the medium is kept, the medium flows through the interior of the coil pipe component, and heat is transmitted to the coil pipe component through the aluminum component in the pipe body and then transmitted to the medium. The heat transfer efficiency is higher than that of heat-conducting oil or air for common indirect heating, the heat transfer pieces arranged in the spiral pipe also absorb heat, the contact area of the heat transfer pieces to a medium is increased, and after the medium absorbing the heat flows into the heat preservation pipe, the heat preservation layer is arranged to conduct heat preservation treatment on the medium absorbing the heat.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heating tubes, in particular to an electric heating tube with good heat conduction effect. Background Art

[0002] Tubular electric heating element (referred to as electric heating tube) is an electrical component that converts electrical energy into thermal energy. It uses a metal tube as the outer shell (including stainless steel and copper tubes), and spiral electric heating alloy wires (nickel-chromium, iron-chromium alloy) are evenly distributed along the central axis of the tube. The gaps are filled with compacted magnesium oxide sand with good insulation and thermal conductivity, and the two ends of the tube are sealed with silicone. This metal armored electric heating element can heat air, metal molds and various liquids.

[0003] Some existing electric heating tubes are generally used in explosion-proof places. They use flowing gaseous or oily media to flow in the coils and transfer heat to the media through the coils. However, the fillers in the electric heating tubes make it difficult to heat the media efficiently, resulting in a large amount of heat loss and inconvenience in use.

[0004] Therefore, we propose an electric heating tube with good thermal conductivity to solve the above problems. Utility Model Content

[0005] The utility model aims to provide an electric heating tube with good heat conduction effect. The device is adopted to work, thereby solving the problem that the filler in the electric heating tube is difficult to heat the medium efficiently and loses a lot of heat.

[0006] To achieve the above object, the utility model provides the following technical solutions: an electric heating pipe with good heat conduction effect, comprising an electric heating pipe structure, wherein the electric heating pipe structure comprises a heating pipe body and a pipe body installed at the lower end of the heating pipe body, a coil component is installed inside the pipe body, and an aluminum component is arranged inside the pipe body;

[0007] The coil component comprises a heat transfer pipe and heat preservation pipes installed at both ends of the heat transfer pipe, and the heat preservation pipes penetrate the outer side of the pipe body.

[0008] Preferably, the two groups of thermal insulation pipes are respectively installed at the upper end and the lower end of the pipe body.

[0009] Preferably, the heat transfer pipe comprises a spiral pipe and an internal strip installed inside the spiral pipe, and the heat transfer pipe surrounds the outer side of the lower end of the heating pipe body.

[0010] Preferably, the built-in strip includes a heat transfer plate and a heat conductive rubber arranged on the outer surface of the heat transfer plate.

[0011] Preferably, the thermal insulation pipe comprises a thermal insulation pipe and a connecting pipe arranged inside the thermal insulation pipe, and a thermal insulation layer is provided between the thermal insulation pipe and the connecting pipe.

[0012] Preferably, one end of the connecting tube is connected to one end of the spiral tube.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model provides an electric heating tube with good heat conduction effect. The medium is specifically hydrogen or methane. The medium is inside the coil component and does not contact the tube body to maintain its safety. The medium flows through the inside of the coil component, and the heat is transferred to the coil component through the aluminum component in the tube body and then transferred to the medium. The heat transfer efficiency is higher than that of ordinary heat transfer oil or air used for indirect heating.

[0015] The utility model proposes an electric heating tube with good thermal conductivity. The heat transfer plate arranged inside the spiral tube also absorbs heat. The arranged heat transfer plate increases the contact area with the medium. After the medium that absorbs heat flows into the insulation tube, the arranged insulation layer insulates the medium after absorbing heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the heat transfer pipe structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the built-in strip structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the thermal insulation pipe structure of the utility model.

[0020] In the figure: 1. electric heating pipe structure; 11. heating pipe body; 12. pipe body; 13. aluminum component; 14. coil component; 141. heat transfer pipe; 1411. spiral pipe; 1412. built-in strip; 14121. heat transfer plate; 14122. thermal conductive rubber; 142. thermal insulation pipe; 1421. thermal insulation pipe; 1422. thermal insulation layer; 1423. connecting pipe. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1: Please refer to Figure 1-4An electric heating pipe with good thermal conductivity includes an electric heating pipe structure 1, the electric heating pipe structure 1 includes a heating pipe body 11 and a pipe body 12 installed at the lower end of the heating pipe body 11, a coil component 14 is installed inside the pipe body 12, an aluminum component 13 is provided inside the pipe body 12, a medium flows inside the coil component 14, and the medium is specifically hydrogen or methane.

[0023] The coil component 14 includes a heat transfer pipe 141 and heat preservation pipes 142 installed at both ends of the heat transfer pipe 141 . The heat preservation pipe 142 passes through the outer side of the pipe body 12 .

[0024] The two groups of thermal insulation pipes 142 are respectively installed at the upper end and the lower end of the pipe body 12.

[0025] The heat transfer pipe 141 includes a spiral pipe 1411 and an inner bar 1412 installed inside the spiral pipe 1411 , and the heat transfer pipe 141 surrounds the outer side of the lower end of the heating pipe body 11 .

[0026] The built-in strip 1412 includes a heat transfer sheet 14121 and a heat conductive rubber 14122 disposed on the outer surface of the heat transfer sheet 14121 .

[0027] The heat-insulating pipe 142 includes a heat-insulating pipe 1421 and a connecting pipe 1423 arranged inside the heat-insulating pipe 1421 , and a heat-insulating layer 1422 is arranged between the heat-insulating pipe 1421 and the connecting pipe 1423 .

[0028] One end of the connecting tube 1423 is connected to one end of the spiral tube 1411 .

[0029] In this embodiment: the medium is specifically hydrogen or methane, and the medium is inside the coil component 14. The medium does not contact the tube body 14 to maintain its safety. The medium flows through the inside of the coil component 14, and the heat is transferred to the coil component 14 through the aluminum component 13 in the tube body 12, and then transferred to the medium. The heat transfer efficiency will be higher than that of ordinary indirect heating heat transfer oil or air. The heat transfer plate 14121 arranged inside the spiral tube 1411 also absorbs heat. The heat transfer plate 14121 increases the contact area with the medium. The heat conductive rubber 14122 reduces the reaction between the medium and the heat transfer plate 14121, and also transfers heat to the medium. After the medium that absorbs heat flows into the insulation tube 142, the insulation layer 1422 is provided to insulate the medium after absorbing heat.

[0030] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electric heating pipe with good thermal conductivity, comprising an electric heating pipe structure (1), characterized in that: The electric heating pipe structure (1) comprises a heating pipe body (11) and a pipe body (12) installed at the lower end of the heating pipe body (11); a coil component (14) is installed inside the pipe body (12); an aluminum component (13) is provided inside the pipe body (12); the coil component (14) comprises a heat transfer pipe (141) and insulation pipes (142) installed at both ends of the heat transfer pipe (141); the insulation pipe (142) passes through the outer side of the pipe body (12).

2. The electric heating tube with good thermal conductivity according to claim 1, characterized in that: The two groups of thermal insulation pipes (142) are respectively installed at the upper end and the lower end of the pipe body (12).

3. The electric heating tube with good thermal conductivity according to claim 1, characterized in that: The heat transfer pipe (141) comprises a spiral pipe (1411) and a built-in strip (1412) installed inside the spiral pipe (1411), and the heat transfer pipe (141) surrounds the outer side of the lower end of the heating pipe body (11).

4. The electric heating tube with good thermal conductivity according to claim 3, characterized in that: The built-in strip (1412) comprises a heat transfer plate (14121) and a heat-conducting rubber (14122) arranged on the outer surface of the heat transfer plate (14121).

5. The electric heating tube with good thermal conductivity according to claim 2, characterized in that: The thermal insulation pipe (142) comprises a thermal insulation pipe (1421) and a connecting pipe (1423) arranged inside the thermal insulation pipe (1421), and a thermal insulation layer (1422) is provided between the thermal insulation pipe (1421) and the connecting pipe (1423).

6. The electric heating tube with good thermal conductivity according to claim 5, characterized in that: One end of the connecting tube (1423) is connected to one end of the spiral tube (1411).

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