阅读说明：本技术 一种耐候性aht铠装电伴热带 (Weather-resistant AHT armored electric tracing band ) 是由 李贻连 于 2021-09-17 设计创作，主要内容包括：本发明涉及一种耐候性AHT铠装电伴热带,包括电伴热带本体,所述电伴热带本体包括第一金属导线和第二金属导线,所述第一金属导线和第二金属导线外侧套设有一导电塑料层,所述导电塑料层为PCT塑料制作的,所述导电塑料层将所述第一金属导线和第二金属导线隔离,所述导电塑料层外侧设置有绝缘层；所述绝缘层外侧设置有网状金属丝层,所述网状金属丝层外侧套设有护套层；所述电伴热带本体上可拆卸连接有固定件,所述固定件既能够用于固定所述电伴热带本体,又能够用于连接两个或多个伴热带本体。本发明提供的耐候性AHT铠装电伴热,带增加了耐候性,使用方便。(The invention relates to a weather-resistant AHT armored electric tracing band which comprises an electric tracing band body, wherein the electric tracing band body comprises a first metal wire and a second metal wire, a conductive plastic layer is sleeved on the outer sides of the first metal wire and the second metal wire, the conductive plastic layer is made of PCT plastic, the first metal wire and the second metal wire are isolated by the conductive plastic layer, and an insulating layer is arranged on the outer side of the conductive plastic layer; a reticular metal wire layer is arranged on the outer side of the insulating layer, and a sheath layer is sleeved on the outer side of the reticular metal wire layer; the electric tracing band is characterized in that a fixing piece is detachably connected to the electric tracing band body, and the fixing piece can be used for fixing the electric tracing band body and can be used for connecting two or more electric tracing band bodies. The weather-resistant AHT armor electric tracing belt provided by the invention has the advantages that the weather resistance is increased, and the use is convenient.)

1. A weather-resistant AHT armored electric tracing band comprises an electric tracing band body (7), wherein the electric tracing band body comprises a first metal wire (1) and a second metal wire (2), a conductive plastic layer (3) is sleeved on the outer sides of the first metal wire and the second metal wire, the conductive plastic layer is made of PCT plastic, the first metal wire and the second metal wire are isolated by the conductive plastic layer, and an insulating layer (4) is arranged on the outer side of the conductive plastic layer; it is characterized in that the preparation method is characterized in that,

a reticular metal wire layer (5) is arranged on the outer side of the insulating layer, and a sheath layer (6) is sleeved on the outer side of the reticular metal wire layer;

the electric tracing band is characterized in that a fixing piece (8) is detachably connected to the electric tracing band body, and the fixing piece can be used for fixing the electric tracing band body and can be used for connecting two or more electric tracing band bodies.

2. The weatherable AHT armor electrical tracing band of claim 1, wherein said insulation layer is made of one or more of modified polyolefins, flame retardant polyolefins, fluorine-containing polyolefins, and perfluorinated materials.

3. The weatherable AHT armor electrical tracing band of claim 1, wherein said jacketing layer is made of one or more of modified polyolefin, flame retardant polyolefin, and perfluoro material.

4. The weather-resistant AHT armored electrical tracing band of claim 1, wherein a thermal insulating sheet (9) is disposed between the sheath layer and the mesh-like wire layer, the thermal insulating sheet being located on one side of a plane formed by the first and second metal wires.

5. The weatherable AHT armored electrical tracing band of claim 1, wherein said fasteners comprise a first fastener (10) and a second fastener (11);

first fixing parts (12) are arranged on two sides of the first fixing part, first fixing holes (13) are formed in the first fixing parts, a first groove (14) is formed in the first fixing part between the first fixing holes on the two sides, and a fixing groove (18) is formed in the first groove;

second fixing parts (15) are arranged on two sides of the second fixing part, second fixing holes (16) are formed in the second fixing parts, and second grooves (17) are formed in the positions, located between the second fixing holes on the two sides, of the second fixing part;

the first fixing piece and the second fixing piece can be fixed into a whole through the first fixing hole and the second fixing hole on two sides, and in the state, the first groove and the second groove form a through hole;

a metal wire connecting piece is arranged in the through hole and comprises an outer frame (19), a partition plate (20) is arranged in the outer frame, and wiring pieces are fixed on two sides of the partition plate;

the wiring piece comprises two symmetrically arranged conducting strips (21), the conducting strips are in a major arc shape, and two ends of the two conducting strips are correspondingly connected, so that two mutually communicated spaces are formed inside the connecting piece; a plurality of elastic sheets (22) are circumferentially arranged on the conductive sheet and comprise a connecting section (23) and a fixing section (24), one end of the connecting section is connected with the conductive sheet, and the other end of the connecting section is connected with the fixing section; the connecting section and the fixed section are inclined relative to the conducting plate, the distance from one end of the elastic sheet connected with the conducting plate to the arc center of the conducting plate is greater than the distance from the other end of the elastic sheet connected with the conducting plate to the arc center of the conducting plate, and the included angle of the connecting section relative to the plane of the conducting plate is smaller than the included angle of the fixed section relative to the plane of the conducting plate;

in each wiring piece, the elastic sheets on the two conducting sheets are positioned at two sides of the conducting sheets;

a first cover plate (25) is arranged at one end of the outer frame, the first cover plate covers a pair of conducting strips on two sides of the partition plate, a first threaded hole is formed in each conducting strip on the first cover plate, which corresponds to two sides of the partition plate, a first screw (26) is in threaded connection with the first threaded hole, a second cover plate (27) is arranged at the other end of the outer frame, the second cover plate covers the other pair of conducting strips on two sides of the partition plate, a second threaded hole is formed in each conducting strip on the second cover plate, which corresponds to two sides of the partition plate, and a second screw (28) is in threaded connection with the second threaded hole;

and the outer frame is provided with a fixed block (29) matched with the fixed groove.

6. The weather resistant AHT armored electrical tracing band of claim 5, wherein said first and second screws are machine-meter screws.

7. The weather-resistant AHT armored electrical tracing band of claim 5, wherein the outer frame and the partition are made of insulating material or made of metal material and the rear surface is provided with an insulating layer;

the conducting strips and the elastic sheets are made of conducting materials.

8. The weatherable AHT armored electrical tracing band of claim 7, wherein,

the conducting strips and the elastic pieces are made of metal materials.

Technical Field

The invention belongs to the technical field of electric tracing bands, and particularly relates to a weather-resistant AHT armored electric tracing band.

Background

The electric tracing band is composed of conductive polymer, two parallel metal wires and an insulating protective layer. The conductive polymer has high positive temperature coefficient characteristic, is connected in parallel, can automatically adjust output power along with the temperature change of a heated system, automatically limits the heating temperature, can be arbitrarily shortened or used for a long time within a certain range, and allows multiple cross overlapping without the worry of high temperature hot spots and burning.

The existing electric tracing band generally has poor weather resistance and is inconvenient to fix, and people are continuously researching on how to solve the problem.

Disclosure of Invention

In view of the above-mentioned problems in the prior art, the present invention provides a weather-resistant AHT armored electrical tracing band to solve at least one of the above-mentioned technical problems.

In order to achieve the above object, the present invention provides a technical solution as follows:

a weather-resistant AHT armored electric tracing band comprises an electric tracing band body, wherein the electric tracing band body comprises a first metal wire and a second metal wire, a conductive plastic layer is sleeved on the outer sides of the first metal wire and the second metal wire and made of PCT plastic, the first metal wire and the second metal wire are isolated by the conductive plastic layer, and an insulating layer is arranged on the outer side of the conductive plastic layer; a reticular metal wire layer is arranged on the outer side of the insulating layer, and a sheath layer is sleeved on the outer side of the reticular metal wire layer; the electric tracing band is characterized in that a fixing piece is detachably connected to the electric tracing band body, and the fixing piece can be used for fixing the electric tracing band body and can be used for connecting two or more electric tracing band bodies.

Preferably, the insulating layer is made of one or more materials selected from modified polyolefin, flame-retardant polyolefin, fluorine-containing polyolefin and perfluorinated material.

Preferably, the sheath layer is made of one or more of modified polyolefin, flame-retardant polyolefin and perfluoro material.

Preferably, a heat preservation sheet is arranged between the sheath layer and the reticular metal wire layer, and the heat preservation sheet is positioned on one side of a plane formed by the first metal wire and the second metal wire.

Preferably, the fixing part comprises a first fixing part and a second fixing part; first fixing parts are arranged on two sides of the first fixing part, first fixing holes are formed in the first fixing parts, a first groove is formed in the first fixing part and located between the first fixing holes in the two sides, and fixing grooves are formed in the first groove; second fixing parts are arranged on two sides of the second fixing part, second fixing holes are formed in the second fixing parts, and second grooves are formed in the positions, located between the second fixing holes on the two sides, of the second fixing part; the first fixing piece and the second fixing piece can be fixed into a whole through the first fixing hole and the second fixing hole on two sides, and in the state, the first groove and the second groove form a through hole; a metal wire connecting piece is arranged in the through hole and comprises an outer frame, a partition plate is arranged in the outer frame, and wiring pieces are fixed on two sides of the partition plate; the wiring piece comprises two symmetrically arranged conducting strips, the conducting strips are in a major arc shape, and two ends of the two conducting strips are correspondingly connected, so that two mutually communicated spaces are formed inside the connecting piece; a plurality of elastic sheets are circumferentially arranged on the conductive sheet and comprise a connecting section and a fixing section, one end of the connecting section is connected with the conductive sheet, and the other end of the connecting section is connected with the fixing section; the connecting section and the fixed section are inclined relative to the conducting plate, the distance from one end of the elastic sheet connected with the conducting plate to the arc center of the conducting plate is greater than the distance from the other end of the elastic sheet connected with the conducting plate to the arc center of the conducting plate, and the included angle of the connecting section relative to the plane of the conducting plate is smaller than the included angle of the fixed section relative to the plane of the conducting plate; in each wiring piece, the elastic sheets on the two conducting sheets are positioned at two sides of the conducting sheets; a first cover plate is arranged at one end of the outer frame, the first cover plate covers a pair of conducting strips on two sides of the partition plate, a first threaded hole is formed in each conducting strip on the first cover plate, which corresponds to two sides of the partition plate, a first screw is connected to each first threaded hole in a threaded manner, a second cover plate is arranged at the other end of the outer frame, the second cover plate covers the other pair of conducting strips on two sides of the partition plate, a second threaded hole is formed in each conducting strip on the second cover plate, which corresponds to two sides of the partition plate, and a second screw is connected to each second threaded hole in a threaded manner; and the outer frame is provided with a fixed block matched with the fixed groove.

Preferably, the first screw and the second screw are screw screws.

Preferably, the outer frame and the partition plate are made of insulating materials or made of metal materials, and the insulating layers are arranged on the rear surfaces of the outer frame and the partition plate; the conducting strips and the elastic sheets are made of conducting materials.

Preferably, the conducting strips and the elastic pieces are made of metal materials.

The weather-resistant AHT armored electric tracing band provided by the invention has the following advantages:

1. the weather resistance of the heat tracing band is increased: the netted metal wire layer and the sheath layer are arranged outside the insulating layer, so that the strength of the electric tracing band is increased, the metal wire net can form interference of shielding signals and a magnetic field and prevent the interference of the electric tracing band with external signals and the magnetic field during working, the insulating layer and the sheath layer are made of modified polyolefin, flame-retardant polyolefin and the like, and the weather resistance of the electric tracing band is greatly increased.

2. The fixing piece can be used for fixing the electric tracing band body and can be used for connecting two or more tracing band bodies, and the use is convenient.

Drawings

FIG. 1 is one of the structural schematic views of a weatherable AHT armored electrical tracing band of the present invention;

FIG. 2 is a second schematic structural view of the weatherable AHT armored electrical tracing band of the present invention;

FIG. 3 is a cross-sectional view of the fastener of FIG. 2;

FIG. 4 is a schematic cross-sectional view of the first fixing member;

FIG. 5 is a schematic cross-sectional view of the second fixing member;

FIG. 6 is a schematic cross-sectional view of a metal conductive connecting member;

FIG. 7 is a top view of a metal conductive connector;

FIG. 8 is a bottom view of a metal conductive connector;

FIG. 9 is a third schematic structural view of a weatherable AHT armored electrical tracing band of the present invention;

reference numerals in the figures; the heat insulation cable comprises a first metal wire 1, a second metal wire 2, a conductive plastic layer 3, an insulating layer 4, a net-shaped metal wire layer 5, a sheath layer 6, an electric tracing band body 7, a fixing piece 8, a heat insulation sheet 9, a first fixing piece 10, a second fixing piece 11, a first fixing part 12, a first fixing hole 13, a first groove 14, a second fixing part 15, a second fixing hole 16, a second groove 17, a fixing groove 18, an outer frame 19, a partition plate 20, a conductive sheet 21, an elastic sheet 22, a connecting section 23, a fixing section 24, a first cover plate 25, a first screw 26, a second cover plate 27, a second screw 28 and a fixing block 29.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Embodiment 1, the present invention provides a weather-resistant AHT armored electric tracing band, which, referring to fig. 1 to 8, includes an electric tracing band body 7, the electric tracing band body includes a first metal wire 1 and a second metal wire 2, in this embodiment, the first metal wire and the second metal wire use copper wires, the outer sides of the first metal wire and the second metal wire are sleeved with an electrically conductive plastic layer 3, in this embodiment, the electrically conductive plastic layer is preferably made of PCT plastic (also referred to as PTC electrically conductive plastic), the first metal wire and the second metal wire are located at two ends of the electrically conductive plastic layer when being made, thus, the middle part of the electrically conductive plastic layer separates the first metal wire and the second metal wire, and the outer side of the electrically conductive plastic layer is provided with an insulating layer 4; the insulating layer is generally made of one or more materials selected from modified polyolefin, flame-retardant polyolefin, fluorine-containing polyolefin and a perfluorinated material, the net-shaped metal wire layer can be made of aluminum magnesium alloy wires or tinned copper wires, the covering density is 80%, and the sheath layer is generally made of one or more materials selected from modified polyolefin, flame-retardant polyolefin and a perfluorinated material; the electric tracing band body is detachably connected with a fixing piece 8, and the fixing piece comprises a first fixing piece 10 and a second fixing piece 11; first fixing parts 12 are arranged on two sides of the first fixing part, each first fixing part is provided with a first fixing hole 13, a first groove 14 is arranged between the two first fixing holes on the first fixing part, and a fixing groove 18 is arranged in each first groove; two sides of the second fixing part are provided with second fixing parts 15, each second fixing part is provided with a second fixing hole 16, and a second groove 17 is arranged between the two second fixing holes on the second fixing part; the first fixing piece and the second fixing piece can be fixed into a whole through the first fixing hole and the second fixing hole on two sides, generally, the first fixing piece and the second fixing piece can be fixed into a whole through bolts, and the first groove and the second groove form a through hole under the condition that the first fixing piece and the second fixing piece are fixed into a whole; the through hole is internally provided with a metal wire connecting piece, the metal wire connecting piece comprises an outer frame 19, a partition plate 20 is arranged in the outer frame, and wiring pieces are fixed on two sides of the partition plate, wherein the outer frame and the partition plate are made of insulating materials or the rear surfaces of the outer frame and the partition plate are provided with insulating layers, so that the outer frame, the partition plate and the wiring pieces are electrically isolated; the wiring piece comprises two symmetrically arranged conducting strips 21, the conducting strips are in a major arc shape, and two ends of the two conducting strips are correspondingly connected, so that two mutually communicated spaces are formed inside the connecting piece; a plurality of elastic sheets 22 are circumferentially arranged on the conductive sheet and comprise a connecting section 23 and a fixing section 24, one end of the connecting section is connected with the conductive sheet, and the other end of the connecting section is connected with the fixing section; the connecting section and the fixing section are inclined relative to the conducting strip, the distance from one end of the elastic sheet connected with the conducting strip to the arc center of the conducting strip is greater than the distance from the other end of the elastic sheet connected with the conducting strip to the arc center of the conducting strip, and in the application, the arc center is the circle center of a circle to which the arc belongs; the included angle of the connecting section relative to the plane of the conducting strip is smaller than that of the fixed section relative to the plane of the conducting strip, so that a bend bending outwards is formed at the connecting position of the fixed section and the connecting section; in each wiring piece, the elastic sheets on the two conducting sheets are positioned at two sides of the conducting sheet, and only the elastic sheet at the upper side of the conducting sheet is shown in fig. 3; a first cover plate 25 is arranged at one end of the outer frame, the first cover plate covers a pair of conducting strips at two sides of the partition plate, the pair of conducting strips on the first cover plate corresponding to two sides of the partition plate are respectively provided with a first threaded hole, the first threaded hole is in threaded connection with a first screw 26, in the embodiment, the first screw can be replaced by a bolt, so that the other pair of conducting strips is not covered and can be used for penetrating a metal wire, the other end of the outer frame is provided with a second cover plate 27, the second cover plate covers the other pair of conducting strips at two sides of the partition plate, the other pair of conducting strips on the second cover plate corresponding to two sides of the partition plate are respectively provided with a second threaded hole, and the second threaded hole is in threaded connection with a second screw 28; the outer frame is provided with a fixing block 29 matched with the fixing groove, so that the fixing block can be clamped in the fixing groove during fixing, and the outer frame can be ensured not to slide relative to the through hole in a mode of directly clamping the outer frame by friction force. In order to prevent the screw from occupying the space, in the embodiment, the first screw and the second screw use a machine-meter screw, which may also be called a jackscrew, a headless screw, or the like.

The weather-resistant AHT armored electric tracing band has the following advantages:

1. the weather resistance of the heat tracing band is increased: the mesh-shaped metal wire layer and the sheath layer are arranged outside the insulating layer, so that the strength of the electric tracing band is increased, the metal wire mesh can form interference of shielding signals and a magnetic field and prevent the interference of the electric tracing band with external signals and the magnetic field during working, the insulating layer and the sheath layer are made of improved polyolefin, flame-retardant polyolefin and the like, and the weather resistance of the electric tracing band is greatly increased;

2. the mounting can enough be used for fixing the electric tracing band body can be used for connecting two or more tracing band bodies again, convenient to use: when the heat tracing band body is fixed, only the first fixing piece and the second fixing piece are used, bolts, screws and the like are matched with corresponding fixing holes to fix the heat tracing band body on a pipeline or other heat-insulating base bodies and press the heat tracing band body, so that the heat tracing band body passes through the corresponding groove;

when the two heat tracing bands are connected, the connecting ends of the two heat tracing bands are stripped, so that a first metal lead and a second metal lead are exposed, a metal lead connecting piece is clamped in the through hole, then a first fixing piece and a second fixing piece are pinched, the first metal lead and the second metal lead exposed by one of the heat tracing bands are inserted into a pair of conducting strips through one end of the outer frame and penetrate out through the threaded holes, then the end parts of the two metal leads are bent or twisted for a circle to form a blocking part, the metal leads are pulled down to deform the conducting strips, the fixing sections are gradually horizontal, the connecting sections are gradually vertically close to the leads, corresponding screws are screwed on corresponding threaded holes to abut against the blocking part, the blocking part cannot rebound, and thus one heat tracing band is connected; similarly, the first metal wire and the second metal wire exposed from the other heat tracing band are inserted into the other pair of conducting strips through one end of the outer frame and penetrate through the threaded holes, then the end parts of the two metal wires are bent or twisted for a circle to form a blocking part, the metal wires are pulled down to enable the conducting strips to be deformed, the fixed section is gradually horizontal, the connecting section is gradually vertically close to the wires, corresponding screws are screwed on the corresponding threaded holes to prop the blocking part, so that the blocking part cannot be rebounded, and the other heat tracing band is connected; the wires of the two heat tracing bands form an electric connection structure; and finally, fixing the fixing piece on the pipeline or other heat-insulating base bodies by using bolts, screws and the like matched with corresponding fixing holes.

3. The fixing piece is ingenious in design, the elastic piece is designed in a two-section mode, so that when the elastic piece is stressed, one section of the elastic piece gradually moves close to the horizontal direction, and the other section of the elastic piece gradually moves vertically, so that the connecting section can be finally attached to the metal wire, the contact area with the metal wire is large, and the electric conduction effect is good; the elastic sheet is circumferentially designed, so that the contact with the metal wire is more uniform, the force perpendicular to the elastic sheet is not needed for limiting during limiting, and the metal wire is not damaged; when the connection relation of the two heat tracing bands is removed, the corresponding screws can be screwed off, the heat tracing bands can be conveniently taken down by cutting off the blocking parts of the metal leads, and the heat tracing bands and the fixing piece can be repeatedly used; the conducting strip is designed in a shape similar to a figure 8, the overall thickness of the fixing piece is reduced, and the threading of the metal conducting wire cannot be influenced when the fixing piece is connected with the two heat tracing bands.

Certainly can also set up three or more arc shell fragment and realize the connection of three or more electric tracing bands, as an implementation mode, can also only set up a set of conducting strip, the conducting strip sets up to circular, frame one end sets up apron and screw hole, and two lines are worn to a conducting strip when using like this, and this design can be longer with two sections length preparation of shell fragment, and two sections deformation angle diminishes during the atress, and the flexure strip is more easy reconversion after demolising the tracing band.

Embodiment 2, refer to fig. 9, and embodiment 2 is a further improvement on embodiment 1, and the specific improvement is that a heat preservation sheet 9 is arranged between the sheath layer and the mesh-shaped metal wire layer, the heat preservation sheet is positioned on one side of a plane formed by the first metal wire and the second metal wire, and the side of the structure, which is not provided with the heat preservation sheet, is attached to a pipeline or other heat preservation base body when in use, so that heat loss can be reduced, and energy can be saved.

The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.