阅读说明：本技术 一种防爆型aht铠装电伴热带 (Explosion-proof AHT armored electric tracing band ) 是由 李贻连 于 2021-09-07 设计创作，主要内容包括：本发明公开了一种防爆型AHT铠装电伴热带,包括电伴热带本体,电伴热带本体包括导体层,绝缘层、发热体层和外护套层；导体层设在电伴热带本体的内部中央,导体层包括两股金属母线,每股金属母线采用多股金属导体以较小束绞节距绞合方式缠绕连接在一起,每股金属母线外包裹有母线绝缘层,保证电缆的抗拉能力及柔软性；绝缘层包括第一绝缘层和第二绝缘层,导体层的外侧包裹有第一绝缘层,第一绝缘层和第二绝缘层之间设有发热体层,发热体层的外侧套设有由金属材料制成的外护套层；绝缘层采用耐温大于1000摄氏度的反吸潮矿物材料制成；外护套层采用铝制金属材料制成,金属母线的材质为外层镀锡的铜导线。(The invention discloses an explosion-proof AHT armored electric tracing band, which comprises an electric tracing band body, wherein the electric tracing band body comprises a conductor layer, an insulating layer, a heating element layer and an outer sheath layer; the conductor layer is arranged in the center of the electric tracing band body and comprises two strands of metal buses, each strand of metal bus is formed by winding and connecting a plurality of strands of metal conductors together in a twisting mode with a small twisting pitch, and a bus insulating layer wraps the outside of each strand of metal bus, so that the tensile capacity and the flexibility of the cable are guaranteed; the insulating layer comprises a first insulating layer and a second insulating layer, the first insulating layer wraps the outer side of the conductor layer, a heating body layer is arranged between the first insulating layer and the second insulating layer, and an outer sheath layer made of a metal material is sleeved on the outer side of the heating body layer; the insulating layer is made of a moisture-absorbing mineral material which can resist temperature higher than 1000 ℃; the outer sheath layer is made of aluminum metal materials, and the metal bus is made of outer tinned copper wires.)

1. The utility model provides an explosion-proof type AHT armor electric tracing area, includes the electric tracing area body, its characterized in that: the electric tracing band body comprises a conductor layer, an insulating layer, a heating body layer and an outer sheath layer;

the conductor layer is arranged in the center of the electric tracing band body and comprises two strands of metal buses, each strand of metal bus is formed by winding and connecting a plurality of strands of metal conductors together in a twisting mode with a small twisting pitch, and a bus insulating layer wraps the outside of each strand of metal bus, so that the tensile capacity and flexibility of the cable are guaranteed;

the insulating layer includes first insulating layer and second insulating layer, the outside parcel of conductor layer has first insulating layer, is equipped with the heating element layer between first insulating layer and the second insulating layer, the outside cover on heating element layer is equipped with the oversheath layer of being made by metal material.

2. The explosion-proof AHT armored electrical tracing band of claim 1, wherein: the insulating layer is made of a moisture-absorbing mineral material which can resist temperature higher than 1000 ℃.

3. The explosion-proof AHT armored electrical tracing band of claim 1, wherein: the outer sheath layer is made of aluminum metal materials.

4. The explosion-proof AHT armored electrical tracing band of claim 1, wherein: the metal bus is made of a copper wire with a tinned outer layer.

5. The explosion-proof AHT armored electrical tracing band of claim 1, wherein: and a buffer layer made of liquid explosion-proof material is filled between the outer sheath layer and the second insulating layer.

6. The preparation method of the buffer layer for the explosion-proof AHT armored electric tracing band, according to claim 5, is characterized by comprising the following steps:

(1) taking 2.5 parts of flax fiber, 1.5 parts of glass fiber, 0.3 part of dichloroethane, 3.2 parts of paraffin, 2.5 parts of calcium stearate, 12 parts of sodium carboxymethylcellulose, 6.2 parts of kaolin, 36 parts of turpentine oil, 2.5 parts of Chinese honeylocust fruit oil and 5 parts of naphtha according to mass percentage;

(2) putting the flax fibers into a mixer, adding the turpentine oil and dichloroethane, stirring for 15min, heating to 42-45 ℃, and preserving heat for 12-15 min to obtain a primary mixed material;

(3) adding naphtha and saponin oil into the primary mixed material obtained in the step (2), uniformly mixing by using a mixer again, heating to 50-55 ℃, preserving heat for 10-20 min, then adding sodium carboxymethylcellulose, paraffin and glass fiber, uniformly mixing, heating to 62 ℃, and preserving heat for 15min to obtain a secondary mixed material;

(4) and (4) taking the secondary mixed material obtained in the step (3), adding calcium stearate and kaolin, and uniformly mixing by using a mixer again to obtain a final mixed material.

(5) Adding the final mixed material obtained in the step (4) into a high-speed centrifugal stirrer, carrying out high-speed centrifugal stirring for 1.5-1.8 hours, slowly raising the temperature to 90 ℃ in the high-speed centrifugal stirring process, and controlling the rotating speed of the high-speed centrifugal stirring to 6500 r/min; and finally, standing to obtain the buffer material.

(6) And (5) taking the buffer material obtained in the step (5), and injecting the buffer material into a gap between the outer sheath layer and the second buffer layer by using an injection tool to complete the filling of the buffer layer between the outer sheath layer and the second buffer layer.

7. The method for preparing the buffer layer for the explosion-proof AHT armored electric tracing band according to claim 6, wherein the method comprises the following steps: the raw material in the step (1) also comprises 4.5 parts of emulsified asphalt by mass percent.

Technical Field

The invention relates to the field of electric tracing bands, in particular to an explosion-proof AHT armored electric tracing band.

Background

The electric tracing band is a novel high-tech product, which is widely applied to the fields of transportation of liquid objects in pipelines, anti-freezing and heat preservation of tank bodies, process temperature maintenance, heating of roads, ramps, pedestrian crossings, eave and floors and the like since the 70 th century ago when the electric tracing band enters the application field. The electric tracing band is generally divided into a parallel electric tracing band and a serial electric tracing band, but in the use process of the existing electric tracing band, the explosion-proof protection effect of an outer sheath layer of the electric tracing band on the electric tracing band is poor, and the impact on the outer sheath layer is easily transmitted to a conductor layer in the electric tracing band, so that the explosion-proof AHT armored electric tracing band is provided.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides an explosion-proof AHT armored electric tracing band, which protects the inside of the electric tracing band through an internal buffer layer and is matched with an outer sheath layer at the same time, so that the electric tracing band has good explosion-proof performance.

In order to solve the technical problems, the invention provides the following technical scheme: an explosion-proof AHT armored electric tracing band comprises an electric tracing band body, wherein the electric tracing band body comprises a conductor layer, an insulating layer, a heating element layer and an outer sheath layer;

the conductor layer is arranged in the center of the electric tracing band body and comprises two strands of metal buses, each strand of metal bus is formed by winding and connecting a plurality of strands of metal conductors together in a twisting mode with a small twisting pitch, and a bus insulating layer wraps the outside of each strand of metal bus, so that the tensile capacity and flexibility of the cable are guaranteed;

the insulating layer includes first insulating layer and second insulating layer, the outside parcel of conductor layer has first insulating layer, is equipped with the heating element layer between first insulating layer and the second insulating layer, the outside cover on heating element layer is equipped with the oversheath layer of being made by metal material.

As a preferred technical scheme of the invention, the insulating layer is made of moisture-absorbing mineral materials which can resist temperature higher than 1000 ℃.

As a preferable technical solution of the present invention, the outer sheath layer is made of an aluminum metal material.

As a preferable technical scheme of the invention, the metal bus is made of a copper wire with a tinned outer layer.

As a preferable technical solution of the present invention, a buffer layer made of a liquid explosion-proof material is filled between the outer sheath layer and the second insulating layer.

A preparation method of a buffer layer for an explosion-proof AHT armored electric tracing band is characterized by comprising the following steps;

(1) taking 2.5 parts of flax fiber, 1.5 parts of glass fiber, 0.3 part of dichloroethane, 3.2 parts of paraffin and 2.5 parts of calcium stearate according to mass percentage; 12 parts of sodium carboxymethylcellulose, 6.2 parts of kaolin, 36 parts of turpentine oil, 2.5 parts of saponin oil and 5 parts of naphtha;

(2) putting the flax fibers into a mixer, adding the turpentine oil and dichloroethane, stirring for 15min, heating to 42-45 ℃, and preserving heat for 12-15 min to obtain a primary mixed material;

(3) adding naphtha and saponin oil into the primary mixed material obtained in the step (2), uniformly mixing by using a mixer again, heating to 50-55 ℃, preserving heat for 10-20 min, then adding sodium carboxymethylcellulose, paraffin and glass fiber, uniformly mixing, heating to 62 ℃, and preserving heat for 15min to obtain a secondary mixed material;

(4) taking the secondary mixed material obtained in the step (3), adding calcium stearate and kaolin, and uniformly mixing by using a mixer again to obtain a final mixed material;

(5) adding the final mixed material obtained in the step (4) into a high-speed centrifugal stirrer, carrying out high-speed centrifugal stirring for 1.5-1.8 hours, slowly raising the temperature to 90 ℃ in the high-speed centrifugal stirring process, and controlling the rotating speed of the high-speed centrifugal stirring to 6500 r/min; finally, standing to obtain a buffer material;

(6) and (5) taking the buffer material obtained in the step (5), and injecting the buffer material into a gap between the outer sheath layer and the second buffer layer by using an injection tool to complete the filling of the buffer layer between the outer sheath layer and the second buffer layer.

As a preferable technical scheme of the invention, the raw material in the step (1) also comprises 4.5 parts of emulsified asphalt by mass percent.

Compared with the prior art, the invention can achieve the following beneficial effects:

according to the invention, the outer sheath layer made of an aluminum material is sleeved on the outer side of the heat tracing band body, the liquid buffer layer is filled in the outer sheath layer and the insulating layer, the liquid buffer layer is used for being filled in the heat tracing band body and used as an explosion-proof medium, the sodium carboxymethyl cellulose in the buffer layer can play a role in thickening, the kaolin can absorb naphtha, turpentine oil and glycerol, meanwhile, the naphtha, the turpentine oil and paraffin play a role in synergistic fusion, the turpentine oil is beneficial to combination of all components, the naphtha enables all the components to be super-dispersed, so that the buffer material has low expansion rate and water absorption rate, can eliminate static in time, is excellent in puncture resistance and has better stability, and the outer sheath layer is matched to ensure that the electric heat tracing band has good explosion-proof performance while the inner part of the electric heat tracing band is protected.

Detailed Description

The present invention will be further described with reference to specific embodiments for the purpose of facilitating an understanding of technical means, characteristics of creation, objectives and functions realized by the present invention, but the following embodiments are only preferred embodiments of the present invention, and are not intended to be exhaustive. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.

The invention provides an explosion-proof AHT armored electric tracing band, which comprises an electric tracing band body, wherein the electric tracing band body comprises a conductor layer, an insulating layer, a heating element layer and an outer sheath layer; the conductor layer is arranged in the center of the electric tracing band body and comprises two strands of metal buses, each strand of metal bus is formed by winding and connecting a plurality of strands of metal conductors together in a twisting mode with a small twisting pitch, and a bus insulating layer wraps the outside of each strand of metal bus, so that the tensile capacity and the flexibility of the cable are guaranteed; the insulating layer comprises a first insulating layer and a second insulating layer, the first insulating layer wraps the outer side of the conductor layer, a heating body layer is arranged between the first insulating layer and the second insulating layer, and an outer sheath layer made of a metal material is sleeved on the outer side of the heating body layer;

the insulating layer is made of a moisture-absorbing mineral material which can resist temperature higher than 1000 ℃; the outer sheath layer is made of aluminum metal materials, the metal bus is made of outer tinned copper wires, and the buffer layer filled between the outer sheath layer and the second insulating layer is made of liquid explosion-proof materials.

Example 1:

a preparation method of a buffer layer for an explosion-proof AHT armored electric tracing band is characterized by comprising the following steps:

(1) taking 2.5 parts of flax fiber, 1.5 parts of glass fiber, 0.3 part of dichloroethane, 3.2 parts of paraffin and 2.5 parts of calcium stearate according to mass percentage; 12 parts of sodium carboxymethylcellulose, 6.2 parts of kaolin, 36 parts of turpentine oil, 2.5 parts of saponin oil and 5 parts of naphtha;

(2) placing flax fiber in a mixer, adding oleum Pini and dichloroethane, stirring for 15min, heating to 45 deg.C, and maintaining for 15min to obtain primary mixed material;

(3) adding naphtha and saponin oil into the primary mixed material obtained in the step (2), uniformly mixing by using a mixer again, heating to 55 ℃, preserving heat for 20min, then adding sodium carboxymethylcellulose, paraffin and glass fiber, uniformly mixing, heating to 62 ℃, and preserving heat for 15min to obtain a secondary mixed material;

(4) taking the secondary mixed material obtained in the step (3), adding calcium stearate and kaolin, and uniformly mixing by using a mixer again to obtain a final mixed material;

(5) adding the final mixed material obtained in the step (4) into a high-speed centrifugal stirrer, carrying out high-speed centrifugal stirring for 1.8 hours, slowly raising the temperature to 90 ℃ in the high-speed centrifugal stirring process, and controlling the rotating speed of the high-speed centrifugal stirring to 6500 r/min; finally, standing to obtain a buffer material;

(6) and (5) taking the buffer material obtained in the step (5), and injecting the buffer material into a gap between the outer sheath layer and the second buffer layer by using an injection tool to complete the filling of the buffer layer between the outer sheath layer and the second buffer layer.

The raw material in the step (1) also comprises 4.5 parts of emulsified asphalt by mass percent.

Example 2:

a preparation method of a buffer layer for an explosion-proof AHT armored electric tracing band is characterized by comprising the following steps:

(1) taking 2.5 parts of flax fiber, 1.5 parts of glass fiber, 0.3 part of dichloroethane, 3.2 parts of paraffin and 2.5 parts of calcium stearate according to mass percentage; 12 parts of sodium carboxymethylcellulose, 6.2 parts of kaolin, 36 parts of turpentine oil, 2.5 parts of saponin oil and 5 parts of naphtha;

(2) placing flax fiber in a mixer, adding oleum Pini and dichloroethane, stirring for 15min, heating to 43.5 deg.C, and maintaining for 14min to obtain primary mixed material;

(3) adding naphtha and saponin oil into the primary mixed material obtained in the step (2), uniformly mixing by using a mixer again, heating to 53 ℃, keeping the temperature for 15min, then adding sodium carboxymethylcellulose, paraffin and glass fiber, uniformly mixing, heating to 62 ℃, and keeping the temperature for 15min to obtain a secondary mixed material;

(4) taking the secondary mixed material obtained in the step (3), adding calcium stearate and kaolin, and uniformly mixing by using a mixer again to obtain a final mixed material;

(5) adding the final mixed material obtained in the step (4) into a high-speed centrifugal stirrer, carrying out high-speed centrifugal stirring for 1.6 hours, slowly raising the temperature to 90 ℃ in the high-speed centrifugal stirring process, and controlling the rotating speed of the high-speed centrifugal stirring to 6500 r/min; finally, standing to obtain a buffer material;

(6) and (5) taking the buffer material obtained in the step (5), and injecting the buffer material into a gap between the outer sheath layer and the second buffer layer by using an injection tool to complete the filling of the buffer layer between the outer sheath layer and the second buffer layer.

The raw material in the step (1) also comprises 4.5 parts of emulsified asphalt by mass percent.

Example 3:

a preparation method of a buffer layer for an explosion-proof AHT armored electric tracing band is characterized by comprising the following steps:

(1) taking 2.5 parts of flax fiber, 1.5 parts of glass fiber, 0.3 part of dichloroethane, 3.2 parts of paraffin and 2.5 parts of calcium stearate according to mass percentage; 12 parts of sodium carboxymethylcellulose, 6.2 parts of kaolin, 36 parts of turpentine oil, 2.5 parts of saponin oil and 5 parts of naphtha;

(2) placing flax fiber in a mixer, adding oleum Pini and dichloroethane, stirring for 15min, heating to 42 deg.C, and maintaining for 12min to obtain primary mixed material;

(3) adding naphtha and saponin oil into the primary mixed material obtained in the step (2), uniformly mixing by using a mixer again, heating to 50 ℃, preserving heat for 10min, then adding sodium carboxymethylcellulose, paraffin and glass fiber, uniformly mixing, heating to 62 ℃, and preserving heat for 15min to obtain a secondary mixed material;

(4) taking the secondary mixed material obtained in the step (3), adding calcium stearate and kaolin, and uniformly mixing by using a mixer again to obtain a final mixed material;

(5) adding the final mixed material obtained in the step (4) into a high-speed centrifugal stirrer, carrying out high-speed centrifugal stirring for 1.5 hours, slowly raising the temperature to 90 ℃ in the high-speed centrifugal stirring process, and controlling the rotating speed of the high-speed centrifugal stirring to 6500 r/min; finally, standing to obtain a buffer material;

(6) and (5) taking the buffer material obtained in the step (5), and injecting the buffer material into a gap between the outer sheath layer and the second buffer layer by using an injection tool to complete the filling of the buffer layer between the outer sheath layer and the second buffer layer.

The raw material in the step (1) also comprises 4.5 parts of emulsified asphalt by mass percent.

Test examples the temperature processing duration and temperature parameter changes of each example during the preparation of the buffer layer of an explosion-proof AHT armored electric tracing band are as follows:

the electric tracing band products are obtained by testing the materials taken in the 3 examples, and the explosion-proof test of the electric tracing band shows that the electric tracing band prepared in the example 2 has the best explosion-proof performance.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.