Nickel-chromium high-resistance electrothermal alloy wire

Abstract

The utility model belongs to the technical field of electric heating alloy wires, and discloses a nickel-chromium high-resistance electric heating alloy wire which comprises an alloy wire body, an inner core layer is arranged in the middle of the interior of the alloy wire body, a middle core layer is arranged on the outer wall of the inner core layer, and an outer core layer is arranged outside the middle core layer. The protective assembly is arranged outside the outer core layer, the protective assembly comprises a first shell and a second shell, the protective assembly is arranged, the elastic belt is pulled to be separated from the annular groove under the elastic action of the elastic belt, then the elastic belt is dragged out of the first shell and the second shell, and the protective assembly is arranged outside the first shell and the second shell. And limiting between the first shell and the second shell is relieved, so that the first shell and the second shell on the surface of the alloy wire body are rapidly replaced, the abraded shells of the alloy wire body are rapidly replaced, and normal use of the nickel-chromium high-resistance electric heating alloy wire is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrothermal alloy wires, and particularly relates to a nickel-chromium high-resistance electrothermal alloy wire. Background Art

[0002] The electrothermal alloy wire is a heating wire mainly used in industrial heating equipment and household heating appliances such as metallurgical machinery, medical treatment, chemical industry, ceramics, electronics, and glass. The nickel-chromium high-resistance electrothermal alloy wire has the advantages of good plasticity, easy repair, strong corrosion resistance, long service life, etc., and is a relatively mainstream electrothermal alloy wire nowadays.

[0003] At present, the outer protective layer of the nickel-chromium high-resistance electrothermal alloy wire is extremely easy to be worn during transportation, which easily causes the protective layer to lose its function of protecting the electrothermal alloy wire. Moreover, it is difficult to quickly replace the outer protective layer of the existing nickel-chromium high-resistance electrothermal alloy wire, which is not conducive to the normal use of the nickel-chromium high-resistance electrothermal alloy wire. In addition, the existing nickel-chromium high-resistance electrothermal alloy wire is difficult to quickly conduct heat to the outside due to the lack of a fast heat conduction structure, greatly reducing the heat conduction efficiency of the electrothermal alloy wire, easily causing heat to accumulate inside the electrothermal alloy wire, accelerating the aging speed of the electrothermal alloy wire, and reducing the practicability of the electrothermal alloy wire. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a nickel-chromium high-resistance electrothermal alloy wire to solve the problems that it is difficult to quickly replace the outer protective layer and difficult to quickly conduct heat to the outside of the existing nickel-chromium high-resistance electrothermal alloy wire.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A nickel-chromium high-resistance electrothermal alloy wire, comprising: an alloy wire body, an inner core layer is centrally arranged inside the alloy wire body, a middle core layer is arranged on the outer wall of the inner core layer, and an outer core layer is arranged outside the middle core layer; a protection component, the protection component is arranged outside the outer core layer, the protection component includes a first outer shell and a second outer shell, the first outer shell and the second outer shell are sleeved outside the outer core layer, and a plurality of annular grooves are evenly opened on the outer walls of the first outer shell and the second outer shell, and an elastic band is sleeved on the outer walls of the first outer shell and the second outer shell through the annular grooves.

[0006] Preferably, a heat conduction component is arranged inside the alloy wire body, the heat conduction component includes an endothermic layer, the endothermic layer is arranged between the inner core layer and the middle core layer, a heat conduction graphite layer is arranged between the middle core layer and the outer core layer, and a plurality of heat conduction columns are evenly connected between the heat conduction graphite layer and the endothermic layer.

[0007] Preferably, docking grooves are opened on both sides of the first outer shell, and docking blocks matching with the docking grooves are connected to both sides of the second outer shell.

[0008] Preferably, connecting bands are connected to the outer walls on both sides of the elastic band.

[0009] Preferably, a plurality of through holes are evenly formed through the heat absorption layer.

[0010] Preferably, an aluminum foil is provided between the first outer shell and the second outer shell and the outer core layer.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] (1) By providing a protection component, the elastic band is pulled. Under the elastic force of the elastic band, it is separated from the annular groove. After the elastic band is pulled out of the first outer shell and the second outer shell, the limit between the first outer shell and the second outer shell is released, so as to realize the rapid replacement of the first outer shell and the second outer shell on the surface of the alloy wire body, facilitate the rapid replacement of the worn outer shell of the alloy wire body, and is beneficial to the normal use of the nickel-chromium high-resistance electrothermal alloy wire.

[0013] (2) By providing a heat conduction component, the heat absorption layer will absorb the heat generated by the inner core layer. Then, through the heat conduction columns between the heat absorption layer and the heat conduction graphite layer, the heat absorption layer conducts the heat to the heat conduction graphite layer, and the heat conduction graphite layer transfers the heat conducted by the heat conduction columns and the heat generated by the middle core layer to the outer core layer, so as to realize the rapid conduction of the heat inside the alloy wire to the outside, improve the heat conduction efficiency of the electrothermal alloy wire, avoid the accumulation of heat inside the electrothermal alloy wire, and reduce the aging speed of the electrothermal alloy wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the utility model;

[0015] Figure 2 is a top view of the utility model;

[0016] Figure 3 is Figure 1 an enlarged view of part A of

[0017] In the figure: 1, inner core layer; 2, middle core layer; 3, outer core layer; 4, first outer shell; 5, second outer shell; 6, annular groove; 7, elastic band; 8, docking block; 9, docking groove; 10, connecting band; 11, heat absorption layer; 12, heat conduction column; 13, through hole; 14, aluminum foil; 15, heat conduction graphite layer; 16, alloy wire body. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] 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.

[0019] Reference Figures 1 - 3 As shown, the utility model provides the following technical solutions: a nickel-chromium high-resistance electric heating alloy wire, comprising: an alloy wire body 16, an inner core layer 1 is centrally arranged inside the alloy wire body 16, a middle core layer 2 is arranged on the outer wall of the inner core layer 1, and an outer core layer 3 is arranged outside the middle core layer 2; a protective component, the protective component is arranged outside the outer core layer 3, the protective component comprises a first outer shell 4 and a second outer shell 5, the first outer shell 4 and the second outer shell 5 are sleeved on the outside of the outer core layer 3, and the outer walls of the first outer shell 4 and the second outer shell 5 are evenly provided with a plurality of annular grooves 6, and the outer walls of the first outer shell 4 and the second outer shell 5 are sleeved with elastic bands 7 through the annular grooves 6.

[0020] Through the above technical solution:

[0021] Specifically, when it is necessary to replace the first shell 4 and the second shell 5 on the surface of the alloy wire body 16, pull the elastic band 7, and under the action of the elastic force of the elastic band 7, make it disengage from the annular groove 6, and then drag the elastic band 7 out of the outside of the first shell 4 and the second shell 5, so that the limit between the first shell 4 and the second shell 5 is released, and after the first shell 4 and the second shell 5 are separated, the replacement shell is installed to the outside of the outer core layer 3 according to the above method, thereby completing the replacement of the worn shell.

[0022] In the present utility model, further implementation modes are provided, referring to Figure 1 A heat-conducting component is arranged inside the alloy wire body 16, and the heat-conducting component includes a heat-absorbing layer 11, and the heat-absorbing layer 11 is arranged between the inner core layer 1 and the middle core layer 2, and a heat-conducting graphite layer 15 is arranged between the middle core layer 2 and the outer core layer 3, and a plurality of heat-conducting columns 12 are evenly connected between the heat-conducting graphite layer 15 and the heat-absorbing layer 11.

[0023] Through the above technical solution:

[0024] Specifically, when in use, the heat absorption layer 11 absorbs the heat generated by the inner core layer 1, and then the heat absorption layer 11 conducts the heat to the thermally conductive graphite layer 15 through the thermally conductive column 12 between the heat absorption layer 11 and the thermally conductive graphite layer 15. Then, the thermally conductive graphite layer 15 transfers the heat conducted by the thermally conductive column 12 and the heat generated by the middle core layer 2 to the outer core layer 3, thereby completing the rapid transfer of the heat generated by the inner core layer 1 and the middle core layer 2 to the outside of the alloy wire body 16.

[0025] Reference Figures 1 - 3 As shown in Figures 1 - 3 , docking grooves 9 are provided on both sides of the first outer shell 4, docking blocks 8 that are mutually matched with the docking grooves 9 are connected to both sides of the second outer shell 5, connecting bands 10 are connected to the outer walls on both sides of the elastic band 7, a plurality of through holes 13 are uniformly formed through the heat absorption layer, and an aluminum foil 14 is provided between the first outer shell 4 and the second outer shell 5 and the outer core layer 3.

[0026] Through the above technical solution:

[0027] Specifically, by providing the docking grooves 9 and the docking blocks 8, it is convenient to position the first outer shell 4 and the second outer shell 5 outside the outer core layer 3. By providing the connecting bands 10, it is convenient to pull the elastic band 7. By providing the through holes 13, part of the heat of the inner core layer 1 can be directly conducted to the middle core layer 2. By providing the aluminum foil 14, the efficiency of the outer core layer 3 in conducting heat outward is improved.

[0028] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nickel-chromium high-resistance electric heating alloy wire, characterized in that: include: An alloy wire body (16), wherein an inner core layer (1) is centrally arranged inside the alloy wire body (16), a middle core layer (2) is arranged on the outer wall of the inner core layer (1), and an outer core layer (3) is arranged outside the middle core layer (2); A protective component, the protective component is arranged outside the outer core layer (3), the protective component comprises a first outer shell (4) and a second outer shell (5), the first outer shell (4) and the second outer shell (5) are sleeved outside the outer core layer (3), and the outer walls of the first outer shell (4) and the second outer shell (5) are evenly provided with a plurality of annular grooves (6), and the outer walls of the first outer shell (4) and the second outer shell (5) are sleeved with elastic bands (7) through the annular grooves (6).

2. The nickel-chromium high-resistance electric heating alloy wire according to claim 1, characterized in that: A heat-conducting component is arranged inside the alloy wire body (16), and the heat-conducting component comprises a heat-absorbing layer (11), the heat-absorbing layer (11) is arranged between the inner core layer (1) and the middle core layer (2), a heat-conducting graphite layer (15) is arranged between the middle core layer (2) and the outer core layer (3), and a plurality of heat-conducting columns (12) are evenly connected between the heat-conducting graphite layer (15) and the heat-absorbing layer (11).

3. The nickel-chromium high-resistance electric heating alloy wire according to claim 1, characterized in that: Both sides of the first shell (4) are provided with docking grooves (9), and both sides of the second shell (5) are connected with docking blocks (8) that match the docking grooves (9).

4. The nickel-chromium high-resistance electric heating alloy wire according to claim 1, characterized in that: The outer walls on both sides of the elastic band (7) are connected with connecting bands (10).

5. The nickel-chromium high-resistance electric heating alloy wire according to claim 2, characterized in that: The heat absorption layer is evenly penetrated by a plurality of through holes (13).

6. The nickel-chromium high-resistance electric heating alloy wire according to claim 2, characterized in that: Aluminum foil (14) is provided between the first outer shell (4) and the second outer shell (5) and the outer core layer (3).

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