CN221103589U - High-strength self-limiting temperature heat tracing belt - Google Patents

Abstract

The utility model relates to the field of heat tracing bands, in particular to a high-strength self-temperature limiting heat tracing band, which comprises a PTC heating layer at the central position, conductive core wires are respectively arranged in round holes at the left side and the right side of the PTC heating layer, an insulating layer is sleeved on the outer end face of the PTC heating layer, a shielding layer is arranged on the outer end face of the insulating layer, a plurality of annular belts are sleeved on the outer side of the shielding layer in a distributed manner, and a wear-resistant protective sleeve is sleeved on the outer side of the shielding layer.

Description

High-strength self-limiting temperature heat tracing belt

Technical Field

The utility model relates to the field of heat tracing bands, in particular to a high-strength self-limiting temperature heat tracing band.

Background

The electric tracing band is a novel high-tech product, and since the last century of 70 enters the application field, the self-limiting electric tracing band has become the most common electric tracing band type in the world today. The heat-insulating material can be widely applied to the transportation of liquid objects in pipelines, the freezing prevention and heat preservation of tank bodies, the maintenance of process temperature, the heating of highways, ramps, sidewalks, eave, floors and the like. The self-limiting electric tracing band is internally provided with PTC polymer materials which play a role in heating, and the PTC polymer materials are distributed between the two conductive cores, and the outside of the self-limiting electric tracing band is composed of a polymer inner protective layer, a metal shielding net and a polymer outer sheath. When the power supply is connected, the internal PTC polymer material is heated and expanded, the resistance is increased, the heating power is reduced, and the temperature is reduced; when the temperature is reduced, the internal PTC polymer material contracts when cooled, the resistance becomes small, the heating power is increased, and the temperature is increased, so that the effect of automatically adjusting the temperature is achieved;

The prior heat tracing belt is easy to loosen between the heating layer and the insulating layer after being frequently opened and closed and heated in the use process, so that the connection between the heating layer and the insulating layer is problematic, and the strength of the heat tracing belt is greatly reduced and the heat tracing belt is easy to damage due to the influence of the heat tracing belt from inside to outside.

Disclosure of utility model

The utility model aims to provide a high-strength self-limiting temperature heat tracing belt so as to solve the problems in the background technology.

The utility model solves the technical problems by adopting the following technical scheme:

the utility model provides a high strength is from temperature limiting companion area, includes the PTC layer that generates heat of central point, install electrically conductive heart yearn in the round hole of PTC layer both sides that generates heat respectively, PTC layer outside terminal surface cover is established and is connected with the insulating layer, insulating layer outside terminal surface is provided with the shielding layer, shielding layer outside distribution cover is equipped with a plurality of clitellums, shielding layer outside cladding is equipped with wear-resisting protective sheath, wear-resisting protective sheath inboard terminal surface equidistance distributes and is provided with the annular, the clitellum embedding is installed in the annular.

Preferably, the insulating layer inner cavity is provided with clamping grooves on the left side and the right side respectively, the left side and the right side of the arc-shaped bulge are provided with protruding strip edges respectively, and the protruding strip edges are respectively and slidably embedded into the clamping grooves.

Preferably, the front end face and the rear end face of the PTC heating layer are respectively provided with an arc-shaped bulge at the middle position, the top ends of the arc-shaped bulge arc surfaces are abutted to the inner cavity surface of the insulating layer, clamping strip parts are distributed on the side wall of the inner cavity of the insulating layer, and the clamping strip parts are respectively clamped at two sides of the arc-shaped bulge.

Preferably, the shielding layer is a net structure woven by tinned copper wires and aluminum-magnesium alloy wires, and the weaving density is more than 85%.

Preferably, the conductive core wire is formed by helically twisting at least twelve tinned copper stranded wires.

The utility model has the advantages and positive effects that:

1. According to the utility model, the contact area between the arc-shaped bulge and the insulating layer is effectively increased, the heat conducting performance is better, meanwhile, the stability of connection between the arc-shaped bulge and the insulating layer is also greatly improved, the bulge strip edges arranged on the side surface of the PTC heating layer are just embedded into the clamping strip grooves clamped in the insulating layer, so that the limit is further formed, the connection strength between the arc-shaped bulge and the insulating layer is effectively ensured due to the limit fixation of two positions, and the connection looseness caused by the reciprocating heating of the heat tracing belt in the use process is avoided;

2. The abrasion-resistant protective sleeve on the surface layer and the shielding layer are reinforced through the annular belt sleeved with the abrasion-resistant protective sleeve, the annular belt is embedded into the embedded ring groove, so that the shielding effect of the shielding layer and the annular belt is better, the bonding property between the shielding layer and the insulating layer is better, the integral stable strength of the embedded ring belt in the annular groove is further improved, and the service life of the heat tracing belt is greatly prolonged.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic diagram of the overall structure of a high-strength self-limiting temperature heat tracing belt;

FIG. 2 is a schematic diagram of the overall structure of a high-strength self-limiting temperature heat tracing belt;

fig. 3 is a schematic view of the whole overhead structure of the high-strength self-temperature-limiting heat tracing belt;

FIG. 4 is a schematic top view of a high strength self-limiting temperature heat tracing band according to the present utility model;

FIG. 5 is a schematic diagram of a part of a high-strength self-limiting temperature heat tracing belt part wear-resistant protective sleeve according to the utility model;

Fig. 6 is a schematic diagram of a partial structure of a shielding layer of a high-strength self-temperature-limiting heat tracing band part.

The index marks in the drawings are as follows: a conductive core wire 10; a PTC heating layer 11; an arc-shaped protrusion 12; a raised strip edge 13; an insulating layer 14; a clip strip portion 15; a shielding layer 16; an endless belt 17; a wear resistant protective sleeve 18; a ring groove 19; a clip strip groove 20.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.

The utility model will now be described in detail with reference to fig. 1-6, wherein for convenience of description, the orientations described below are now defined as follows: the vertical, horizontal, vertical and vertical directions described below are the same as the vertical, horizontal, vertical and horizontal directions of the view of fig. 1, and the vertical, horizontal and vertical directions of the front view of the device of the present utility model are the same as those of fig. 1.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically linked, may be directly linked, may be indirectly linked through an intermediary, and may be in communication with the interior of at least two elements or in an interaction relationship between at least two elements, unless explicitly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Embodiments of the utility model are described in further detail below with reference to the attached drawing figures:

Referring to fig. 1-6, an embodiment of the present utility model is provided: the utility model provides a high strength self-limiting temperature companion area, wholly is the platykurtic, including central point's PTC layer 11 that generates heat, with electrically conductive heart yearn 10 alternate to be installed in the round hole of PTC layer 11 left and right sides generates heat, electrically conductive heart yearn 10 be twelve tinned copper stranded conductor spiral transposition constitution, and PTC layer 11 mid portion is provided with arc protruding 12 for be formed with a recess between the circular part of arc protruding 12 and both sides PTC layer 11 overcoat is equipped with insulating layer 14, the distribution is provided with card strip portion 15 on the inner chamber lateral wall of insulating layer 14, utilizes card strip portion 15 embedding is in the recess, not only effectually improved arc protruding 12 with the area of contact between the insulating layer 14 has also improved greatly simultaneously, simultaneously the stability of connection between the two is provided with protruding strip limit 13 on the drum part of PTC layer 11 left and right sides respectively, protruding strip limit 13 is blocked in the card strip groove 20 in the insulating layer 14, further forms spacing, and just in the insulating layer 11 overcoat is equipped with insulating layer's the spacing fixed effective assurance protruding 12 and the insulating layer has just in time led to the fact that the connection intensity has been had the reciprocal insulating layer 16 to appear in the insulating layer 14 to make the insulating layer 16 appear at the end face of the connection is difficult for the insulating layer is connected to the insulating layer has avoided the end face 16 to the end face to be connected in the insulating layer to the back and forth.

In addition, in an embodiment, the outside distribution cover of shielding layer 16 is equipped with a plurality of clitellum 17, wear-resisting protective sheath 18 inboard terminal surface equidistance distribution is provided with annular 19, annular 17 embedding is installed in annular 19, wherein shielding layer 16 with annular 17 all is tinned copper wire and almag wire and weaves into, shielding layer 16 is the network structure, and weaves density more than 80%, can let the laminating nature between shielding layer 16 and the insulating layer 14 better when making shielding layer 16 and annular 17 combine shielding effect better, and annular 17 embedding is installed in annular 19 holistic stable intensity further improves, can make the life of companion's area obtain greatly improved.

In the specific implementation, firstly, a groove is formed between the arc-shaped bulge 12 arranged in the PTC heating layer 11 and the round parts on two sides at the central position, the groove is combined with the clamping strip part 15 arranged in the insulating layer 14, the contact area between the arc-shaped bulge 12 and the insulating layer 14 is effectively improved, the heat conducting performance is better, meanwhile, the stability of connection between the arc-shaped bulge 12 and the insulating layer is also greatly improved, the bulge strip edge 13 arranged on the side surface of the PTC heating layer 11 is just embedded into the clamping strip groove 20 clamped in the insulating layer 14, limit is further formed, the limit fixing at two positions effectively ensures the connection strength between the arc-shaped bulge 12 and the insulating layer 14, so that the connection is loose due to the reciprocating heating in the use process of a heat tracing belt, the abrasion-resistant protective sleeve 18 on the surface layer is protected, the inner-layer shielding layer 16 is reinforced through the annular belt 17 sleeved between the abrasion-resistant protective sleeve 18 and the shielding layer 16, meanwhile, the shielding layer 16 and the annular belt 17 are embedded into the annular belt 19, the combination shielding effect of the shielding layer 16 and the annular belt 17 is better, meanwhile, the joint strength between the shielding layer 16 and the insulating layer 14 can be better, the thermal belt is embedded into the annular belt 19, the annular belt 19 is further stably embedded into the annular belt 19, and the service life is prolonged.

It should be emphasized that the examples described herein are illustrative rather than limiting, and therefore the utility model is not limited to the examples described in the detailed description, but rather falls within the scope of the utility model as defined by other embodiments derived from the technical solutions of the utility model by those skilled in the art.

Claims (5)

1. The utility model provides a high strength is from limit temperature companion area, includes PTC zone of heating (11) of central point position, its characterized in that: conductive core wires (10) are respectively installed in round holes on the left side and the right side of the PTC heating layer (11), an insulating layer (14) is sleeved on the outer side end face of the PTC heating layer (11), a shielding layer (16) is arranged on the outer side end face of the insulating layer (14), a plurality of annular belts (17) are sleeved on the outer side of the shielding layer (16), a wear-resistant protective sleeve (18) is sleeved on the outer side of the shielding layer (16), annular grooves (19) are distributed on the inner side end face of the wear-resistant protective sleeve (18) at equal intervals, and the annular belts (17) are embedded in the annular grooves (19).

2. The high-strength self-limiting temperature heat tracing band according to claim 1, wherein: the inner cavity of the insulating layer (14) is provided with clamping grooves (20) on the left side and the right side respectively, the left side and the right side of the arc-shaped bulge (12) are provided with bulge strip edges (13) respectively, and the bulge strip edges (13) are respectively and slidably embedded into the clamping grooves (20).

3. A high strength self-limiting temperature tracing band according to claim 2, wherein: the PTC heating layer is characterized in that arc-shaped bulges (12) are respectively arranged on the front end face and the rear end face of the PTC heating layer (11) at the middle position, the top ends of the arc-shaped bulges (12) are abutted to the inner cavity surface of the insulating layer (14), clamping strip parts (15) are distributed on the side wall of the inner cavity of the insulating layer (14), and the clamping strip parts (15) are respectively clamped on two sides of the arc-shaped bulges (12).

4. The high-strength self-limiting temperature heat tracing band according to claim 1, wherein: the shielding layer (16) is of a net structure formed by braiding tinned copper wires and aluminum-magnesium alloy wires, and the braiding density is more than 80%.

5. The high-strength self-limiting temperature heat tracing band according to claim 1, wherein: the conductive core wire (10) is formed by helically twisting at least twelve tinned copper stranded wires.