High-durability nickel-chromium resistance wire

Abstract

The utility model discloses a high-durability nickel-chromium resistance wire, which comprises a resistance wire body, the resistance wire body comprises a nickel-chromium alloy wire, a sheath is arranged on the outer side of the nickel-chromium alloy wire, an oxidation-resistant coating is coated on the outer side of the nickel-chromium alloy wire, the sheath comprises a heat insulation layer, the heat insulation layer is arranged on the outer side of the nickel-chromium alloy wire, and the oxidation-resistant coating is coated on the outer side of the nickel-chromium alloy wire. The outer side of the heat insulation layer is coated with a waterproof coating, and the oxidation-resistant coating is located between the nickel-chromium alloy wire and the heat insulation layer. According to the utility model, not only can the nickel-chromium alloy wire be prevented from oxidizing with air, but also the heat insulation layer can isolate external heat, so that the resistance wire can be prevented from being influenced by a high-temperature environment, the durability of the resistance wire is improved, the service life of the resistance wire is prolonged, and the waterproof function of the resistance wire can be realized; therefore, the resistance wire cannot leak when exposed in rainy days, and the use effect of the resistance wire is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to environment monitoring appearance technical field especially relates to a high durability nickel chromium resistance wire. BACKGROUND

[0002] Resistance wire is a kind of slender filamentary metal conductor made of specific material, and its resistivity is higher, is used to limit electric current or generate heat, and resistance wire is usually made of nickel chromium alloy, aluminum nickel alloy and the like metal, and can be produced by wire drawing or modulation method.

[0003] Resistance wire is the key component of many electronic devices, and its main function is to convert electric energy into heat energy, however, the resistance wire of the prior art is prone to oxidation reaction with air, and is prone to deformation when used in high-temperature environment, so that the durability of resistance wire is generally poor, thereby reducing the service life of resistance wire. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art and provides a high durability nickel chromium resistance wire.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A kind of high durability nickel chromium resistance wire, including resistance wire body, the resistance wire body includes nickel chromium alloy wire, the outer side of the nickel chromium alloy wire is equipped with sheath, the outer side of the nickel chromium alloy wire is coated with oxidation-resistant coating, the sheath includes heat insulation layer, the heat insulation layer is arranged at the outer side of nickel chromium alloy wire, the outer side of the heat insulation layer is coated with waterproof coating.

[0007] As a further scheme of the utility model, the oxidation-resistant coating is located between the nickel chromium alloy wire and the heat insulation layer.

[0008] As a further scheme of the utility model, the both ends of the resistance wire body are integrally formed with connecting parts, and the connecting part is integrally formed with a pin on one side.

[0009] As a further scheme of the utility model, the top of the pin is provided with a mounting hole penetrating through the pin.

[0010] As a further scheme of the utility model, the resistance wire body is helical as a whole, and the inner diameter of the resistance wire body as a whole is 3mm.

[0011] The utility model has the advantages of:

[0012] 1. The cooperation of the oxidation-resistant coating and the heat insulation layer is used, the oxidation-resistant coating is coated on the outer side of the nickel-chromium alloy wire, so that the oxidation reaction of the nickel-chromium alloy wire with air can be avoided, and meanwhile the heat insulation layer can insulate external heat, so that the influence of high-temperature environment on the resistance wire can be avoided, and the durability and service life of the resistance wire are improved.

[0013] 2. The waterproof coating is formed by coating polyurethane on the outer side of the heat insulation layer, so that the waterproof function of the resistance wire is realized, so that the resistance wire can not leak when exposed to rain, and the use effect of the resistance wire is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A schematic diagram of the main structure of the high-durability nickel-chromium resistance wire is provided for the utility model;

[0015] Figure 2 A schematic diagram of the cross-section structure of the high-durability nickel-chromium resistance wire is provided for the utility model;

[0016] Figure 3 A schematic diagram of the cross-section structure of the high-durability nickel-chromium resistance wire is provided for the utility model;

[0017] Figure 4 A schematic diagram of the enlarged structure of A of the high-durability nickel-chromium resistance wire is provided for the utility model.

[0018] In the drawing: 1, resistance wire body; 2, connecting part; 3, nickel-chromium alloy wire; 4, sheath; 5, oxidation-resistant coating; 6, heat insulation layer; 7, waterproof coating; 8, lead; 9, mounting hole. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model, and the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model. EMBODIMENT

[0020] REFERENCE Figures 1-4The utility model discloses a high durability nickel chromium resistance wire, including resistance wire body 1, resistance wire body 1 includes nickel chromium alloy wire 3, the outside of nickel chromium alloy wire 3 is equipped with the sheath 4, the outside of nickel chromium alloy wire 3 is coated with oxidation -resistant coating 5, the sheath 4 includes heat -insulating layer 6, heat -insulating layer 6 is set up the outside of nickel chromium alloy wire 3 through the process of extruding and covering, the outside of heat -insulating layer 6 is coated with waterproof coating 7, the material of oxidation -resistant coating 5 in the embodiment is aluminium oxide, the material of heat -insulating layer 6 is silica gel, the material of waterproof coating 7 is polyurethane, after melting nickel chromium, nickel chromium alloy wire 3 is formed in mould injection, then aluminium oxide is coated on the outside of nickel chromium alloy wire 3 and forms oxidation -resistant coating 5, can avoid nickel chromium alloy wire 3 and air oxidation reaction, then the heat -insulating layer 6 is formed by extruding and covering process using silica gel as the material on the outside of nickel chromium alloy wire 3, heat -insulating layer 6 can insulate the heat of outside, can avoid high temperature environment to the influence of resistance wire, improved the durability and service life of resistance wire, then the waterproof coating 7 is formed by coating on the outside of heat -insulating layer 6 using polyurethane as raw material, realizes the waterproof function of resistance wire, can make resistance wire not leak when exposing in rainy day, improved the use effect of resistance wire.

[0021] In the utility model, oxidation -resistant coating 5 is located between nickel chromium alloy wire 3 and heat -insulating layer 6, and the both ends of resistance wire body 1 are integrally formed with connecting portion 2, one side of connecting portion 2 is integrally formed with pin 8, the top of pin 8 is provided with mounting hole 9 penetrating through pin 8, the whole resistance wire body 1 is helical, the inner diameter of the whole resistance wire body 1 is 3mm, the inner diameter of the whole resistance wire body 1 is 3mm, the gap is large, which ensures heat dissipation, product safety and no damage to the shell.

[0022] Working principle: when using, nickel chromium alloy wire 3 is formed in mould injection after melting nickel chromium, then aluminium oxide is coated on the outside of nickel chromium alloy wire 3 and forms oxidation -resistant coating 5, can avoid nickel chromium alloy wire 3 and air oxidation reaction, then the heat -insulating layer 6 is formed by extruding and covering process using silica gel as the material on the outside of nickel chromium alloy wire 3, heat -insulating layer 6 can insulate the heat of outside, can avoid high temperature environment to the influence of resistance wire, improved the durability and service life of resistance wire, then the waterproof coating 7 is formed by coating on the outside of heat -insulating layer 6 using polyurethane as raw material, realizes the waterproof function of resistance wire, can make resistance wire not leak when exposing in rainy day, improved the use effect of resistance wire, then nickel chromium alloy wire 3 is bent and forms helical shape with 3mm inner diameter, to make resistance wire body 1. Embodiment

[0023] Refer to Figures 1-4The embodiment is different from the above-mentioned embodiments in that the material of the oxidation-resistant coating 5 is RLHY-305 graphite oxidation-resistant coating, the material of the heat insulation layer 6 is polytetrafluoroethylene, and the material of the waterproof coating 7 is polyacrylate.

[0024] In addition, although the embodiments of the utility model have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A highly durable nickel-chromium resistance wire comprising a resistance wire body (1), characterized in that, The resistance wire body (1) comprises a nichrome wire (3), an outer side of the nichrome wire (3) is provided with a sheath (4), an outer side of the nichrome wire (3) is coated with an oxidation-resistant coating (5), the sheath (4) comprises a heat insulation layer (6), the heat insulation layer (6) is arranged on the outer side of the nichrome wire (3), and an outer side of the heat insulation layer (6) is coated with a waterproof coating (7).

2. A high-duty nichrome resistance wire as claimed in claim 1, wherein, The oxidation-resistant coating (5) is located between the nichrome wire (3) and the heat insulation layer (6).

3. A high-duty nichrome resistance wire as claimed in claim 1, wherein, Both ends of the resistance wire body (1) are integrally formed with a connecting portion (2), and one side of the connecting portion (2) is integrally formed with a pin (8).

4. A high-duty nichrome resistance wire as claimed in claim 3, wherein, A mounting hole (9) penetrating through the pin (8) is formed in the top of the pin (8).

5. A high-duty nichrome resistance wire as claimed in claim 1, wherein, The resistance wire body (1) is in a spiral shape as a whole, and an inner diameter of the resistance wire body (1) as a whole is 3 mm.

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