阅读说明：本技术 一种防爆场所用电伴热带 (Electric tracing band for explosion-proof place ) 是由 李贻连 于 2021-08-03 设计创作，主要内容包括：本发明涉及一种防爆场所用电伴热带,属于伴热电缆技术领域,其技术方案包括伴热带本体,其特征在于:所述伴热带本体包括间隔设置的至少两组伴热带组,所述伴热带组外侧包裹有绝缘层；所述伴热带组外侧且位于所述绝缘层外侧包裹有导热层；所述导热层外侧包裹屏蔽层,所述屏蔽层外侧设置有护套层；两组所述伴热带组的一侧面形成工作面,另一侧面形成保温面,所述屏蔽层和所述导热层之间,且位于远离所述工作面的一侧设置有隔热层,所述隔热层和所述屏蔽层之间设置有第一防爆网。通过采用上述技术方案,能够提高电伴热带的防爆效果,适用于一些防爆场所进行伴热工作。(The invention relates to an electric tracing band for an explosion-proof place, which belongs to the technical field of tracing cables and comprises a tracing band body, wherein the tracing band body comprises at least two groups of tracing band groups which are arranged at intervals, and an insulating layer is wrapped outside the tracing band groups; the heat tracing belt group is arranged on the outer side of the insulating layer and is wrapped by a heat conducting layer; the shielding layer is wrapped outside the heat conduction layer, and the sheath layer is arranged outside the shielding layer; two sets of a side of heat tracing band group forms the working face, and another side forms the heat preservation face, the shielding layer with between the heat-conducting layer, and be located and keep away from one side of working face is provided with the insulating layer, the insulating layer with be provided with first explosion-proof net between the shielding layer. By adopting the technical scheme, the explosion-proof effect of the electric tracing band can be improved, and the electric tracing band is suitable for carrying out heat tracing work in some explosion-proof places.)

1. An electric heat tracing band for an explosion-proof place comprises a heat tracing band body, and is characterized in that the heat tracing band body comprises at least two groups of heat tracing band groups (100) which are arranged at intervals, and the outer sides of the heat tracing band groups (100) are wrapped with insulating layers (110);

the heat tracing belt group (100) is wrapped with a heat conducting layer (200) on the outer side of the insulating layer (110); the shielding layer (300) is wrapped outside the heat conduction layer (200), and the sheath layer (400) is arranged outside the shielding layer (300);

one side surface of the two heat tracing band groups (100) forms a working surface (410), the other side surface forms a heat preservation surface (420), a heat insulation layer (500) is arranged between the shielding layer (300) and the heat conduction layer (200) and on one side far away from the working surface (410),

a first explosion-proof net (600) is arranged between the heat insulation layer (500) and the shielding layer (300).

2. The electric tracing band for explosion-proof places according to claim 1, wherein the tracing band group (100) comprises core wires (120) arranged at intervals and PTC material layers (130) positioned outside the core wires (120).

3. The electric tracing ribbon for explosion-proof places according to claim 1, wherein the insulating layer (110) is externally wrapped with a second explosion-proof net (140).

4. The electric tracing band for the explosion-proof places according to claim 1, wherein two layers of third explosion-proof nets (700) are arranged between the two groups of heat tracing band groups (100) at intervals, and the third explosion-proof nets (700) are respectively positioned at one side close to the heat preservation surface (420) and one side close to the working surface (410).

5. The electric tracing band for explosion-proof places according to claim 1, wherein the heat-insulating layer (500) comprises a first heat-insulating layer (510) adjacent to one side surface of the heat-insulating surface (420) and a second heat-insulating layer (520) located at two vertical side surfaces between the heat-insulating surface (420) and the working surface (410).

6. The electric tracing band for the explosion-proof places according to claim 1, wherein the third explosion-proof nets (700) are uniformly arranged along the length direction of the electric tracing band at intervals.

7. The electric tracing band for explosion-proof places according to claim 1, wherein the outer side of the heat-insulating layer (500) is covered with a fireproof fiber layer (800).

8. The electric tracing band for explosion-proof places according to claim 1, wherein the sheath layer (400) is coated with a decorative layer (900) on the outer side, the decorative layer (900) comprises a first decorative layer (910) near the heat-insulating surface (420) side and a second decorative layer (920) near the working surface (410) side, and the first decorative layer (910) and the second decorative layer (920) are different.

Technical Field

The invention belongs to the technical field of heat tracing cables, and particularly relates to an electric tracing band for an explosion-proof place.

Background

The heat tracing band has been widely used as an effective pipeline (storage tank) heat preservation and anti-freezing scheme. The working principle is that a certain amount of heat is radiated through the heat tracing medium, and the loss of the heat tracing pipeline is supplemented through direct or indirect heat exchange, so that the normal working requirements of temperature rise, heat preservation or freeze prevention are met. In the 70's of the 20 th century, the concept of replacing steam tracing with electric tracing solutions was proposed. In the late 70 s and early 80 s, electric tracing technology has been widely popularized in many industrial departments including energy industry, and steam tracing is comprehensively replaced by electric tracing. The development of electric tracing technology has been developed to date, from traditional constant power tracing to self-temperature control electric tracing with conductive plastic as core.

In the prior art, heat tracing cables are mainly used in places such as petroleum, chemical engineering, thermal power plants and the like where the solidification/low flow speed of liquid substances in pipelines or tanks needs to be prevented, are mainly used for heat tracing of fire-fighting pipelines in public facilities, and can be used for indoor heating and outdoor pipeline antifreezing in winter in civil use.

The heat tracing cable in the prior art comprises a heat tracing band which generates heat internally, an insulating layer which wraps the outer side of the heat tracing band, a shielding layer and a protective layer. In some special occasions, the heat tracing band needs to have certain explosion-proof performance, but the explosion-proof effect of the heat tracing band in the prior art is relatively poor.

Disclosure of Invention

In view of the problems in the prior art, the invention aims to provide an electric tracing band for explosion-proof places, which can improve the explosion-proof effect of the electric tracing band and is suitable for carrying out heat tracing work in some explosion-proof places.

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

an electric tracing band for an explosion-proof place comprises a tracing band body, and is characterized in that the tracing band body comprises at least two groups of tracing band groups which are arranged at intervals, and the outer sides of the tracing band groups are wrapped with insulating layers; the heat tracing belt group is arranged on the outer side of the insulating layer and is wrapped by a heat conducting layer; the shielding layer is wrapped outside the heat conduction layer, and the sheath layer is arranged outside the shielding layer; two sets of a side of heat tracing band group forms the working face, and another side forms the heat preservation face, the shielding layer with between the heat-conducting layer, and be located and keep away from one side of working face is provided with the insulating layer, the insulating layer with be provided with first explosion-proof net between the shielding layer.

Preferably, the heat tracing band group comprises core wires arranged at intervals and a PTC material layer positioned outside the core wires.

Preferably, the outer side of the insulating layer is wrapped with a second explosion-proof net.

Preferably, two layers of third explosion-proof nets are arranged between the two heat tracing band groups at intervals, and the third explosion-proof nets are respectively positioned on one side close to the heat preservation surface and one side close to the working surface.

Preferably, the heat insulation layer comprises a first heat insulation layer close to one side face of the heat insulation face and a second heat insulation layer located on two vertical side faces between the heat insulation face and the working face.

Preferably, the third explosion prevention nets are uniformly arranged along the length direction of the electric tracing band at intervals.

Preferably, the outer side of the heat insulation layer is covered with a fireproof fiber layer.

Preferably, the outer side of the sheath layer is coated with a decorative layer, the decorative layer comprises a first decorative layer close to one side of the heat preservation surface and a second decorative layer close to one side of the working surface, and the first decorative layer and the second decorative layer are different.

According to the point heat tracing belt for the explosion-proof place, the first explosion-proof net, the second explosion-proof net and the third explosion-proof net are arranged on the outer sides of the two heat tracing belt groups, so that the point heat tracing belt has certain explosion-proof performance and is safer when being used in the explosion-proof place. Simultaneously, through setting up the insulating layer in two sets of heat tracing band group one sides for this electric heat tracing band's heat preservation face one side possesses certain heat preservation effect, and then reduces some heat tracing band thermal loss to a certain extent, simultaneously, through the contact of working face one side with treating the heat tracing equipment, can play the heat tracing effect, when improving the heat tracing effect, reduces thermal heat dissipation, and then practiced thrift the electric energy to a certain extent.

Drawings

FIG. 1 is a sectional view of an electric tracing band for explosion-proof sites according to the present invention;

FIG. 2 is a partial sectional view of an electric tracing band for an explosion-proof site according to the present invention;

FIG. 3 is a schematic diagram showing the positional relationship between a protruded heat trace band group and a third explosion-proof net in an electric heat trace band for an explosion-proof site according to the present invention.

Reference numbers in the figures:

100. a heat tracing band group; 110. an insulating layer; 120. a core wire; 130. a layer of PTC material; 140. a second explosion-proof net;

200. a heat conductive layer;

300. a shielding layer;

400. a sheath layer; 410. a working surface; 420. keeping warm;

500. a thermal insulation layer; 510. a first insulating layer; 520. a second thermal insulation layer;

600. a first explosion-proof net;

700. a third explosion prevention net;

800. a fire-resistant fiber layer;

900. a decorative layer; 910. a first decorative layer; 920. and a second decorative layer.

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.

Examples

The invention provides an electric heat tracing band for an explosion-proof place, which comprises a heat tracing band body, wherein the heat tracing band body comprises at least two groups of heat tracing band groups 100 which are arranged at intervals, and the outer sides of the heat tracing band groups 100 are wrapped with insulating layers 110; the heat conduction layer 200 is wrapped outside the heat tracing band group 100 and outside the insulating layer 110; the shielding layer 300 wraps the outer side of the heat conduction layer 200, and the sheath layer 400 is arranged on the outer side of the shielding layer 300; one side surface of the two heat tracing band sets 100 forms a working surface 410, the other side surface forms a heat preservation surface 420, when the heat tracing band sets are installed, the working surface 410 is positioned on the pipeline to be jointed, and the heat preservation surface 420 is positioned on the outer side.

Between shielding layer 300 and heat-conducting layer 200, and be located the one side of keeping away from working face 410 and be provided with insulating layer 500, be provided with first explosion-proof net 600 between insulating layer 500 and shielding layer 300. The heat insulation layer 500 has heat insulation effect on the electric tracing band, and the heat insulation effect is improved to a certain extent. Meanwhile, the strength of the electric tracing band can be improved through the arranged first anti-explosion net 600, and the electric tracing band has certain anti-explosion performance when being used in an anti-explosion place.

Specifically, the heat trace strip assembly 100 includes spaced core wires 120, and a PTC material layer 130 disposed outside the core wires 120. The insulating layer 110 is wrapped on the outside of the PTC material layer 130. In operation, a heat tracing effect is provided by the core wire 120 and the PTC material layer 130 on the outside thereof.

The second explosion-proof net 140 is wrapped outside the insulating layer 110. Two layers of third explosion-proof nets 700 are arranged between the two heat tracing band groups 100 at intervals, and the third explosion-proof nets 700 are respectively positioned on one side close to the heat preservation surface 420 and one side close to the working surface 410. Wherein, the two ends of the two groups of third explosion-proof nets 700 are connected with the second explosion-proof net 140, and the third explosion-proof nets 700 are uniformly arranged along the length direction of the electric tracing band at intervals. Through the second explosion-proof net 140 that sets up, can protect solitary companion's heat band group 100 to a certain extent and keep intact, through cooperation third explosion-proof net 700, in the use, through second explosion-proof net 140 and third explosion-proof net 700, can strengthen the joint strength between two sets of heat band groups 100, and then improve explosion-proof effect.

The insulation layer 500 includes a first insulation layer 510 adjacent to one side of the insulation surface 420, and a second insulation layer 520 between the insulation surface 420 and the working surface 410 on both vertical sides. The first insulation layer 510 and the second insulation layer 520 are arranged to achieve the effect of heat preservation and insulation on two sides of the heat tracing band. In the time period of using, particularly needing heat preservation in winter, the electric tracing band is attached to a pipeline to be heat-preserved through the working face 410, and the other three sides of the electric tracing band are respectively heat-preserved and heat-insulated through the first heat-insulating layer 510 and the second heat-insulating layer 520, so that the heat preservation effect of the tracing band is greatly improved.

Preferably, the outer side of the thermal insulation layer 500 is covered with a fireproof fiber layer 800. Through the fireproof fiber layer 800, the fireproof effect of the electric tracing band can be improved in the using process, so that the electric tracing band is safer to use in the using process of an explosion-proof place. Meanwhile, the fireproof fiber layer 800 covers the heat insulation layer 500, and is attached to the pipeline on one side close to the working surface 410 or attached to the surface of the equipment to be insulated, so that the fireproof fiber layer has a certain protection effect under the condition of better heat insulation effect.

The outer side of the sheath layer 400 is coated with a decorative layer 900, the decorative layer 900 comprises a first decorative layer 910 close to one side of the heat preservation surface 420 and a second decorative layer 920 close to one side of the working surface 410, and the first decorative layer 910 and the second decorative layer 920 are different. Specifically, decorative layers 900 of different colors and different patterns may be used for first decorative layer 910 and second decorative layer 920. Through the different decorative layer 900 that sets up, in specific use, can distinguish working face 410 and heat preservation face 420 by the efficient more, and then can be faster install, simultaneously, avoided the fault operation to a certain extent.

The invention provides an electric tracing band for explosion-proof places, which is operated to cover equipment or pipelines to be traced when in use, and a PTC material layer 130 is controlled to keep warm and trace heat within a certain range through the conduction of a core wire 120.

The first explosion-proof net 600, the second explosion-proof net 140 and the third explosion-proof net 700 which are arranged outside the two heat tracing band groups 100 have certain explosion-proof performance, and are safer when being used in an explosion-proof place. Meanwhile, the heat insulation layer 500 arranged on one side of the two heat tracing band groups 100 enables one side of the heat insulation surface 420 of the electric heat tracing band to have a certain heat insulation effect, so that the heat loss of the point heat tracing band is reduced to a certain extent, meanwhile, the heat tracing effect can be achieved through the contact of one side of the working surface 410 and the equipment to be subjected to heat tracing, the heat dissipation of heat is reduced while the heat tracing effect is improved, and electric energy is saved to a certain extent.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, and a communication between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

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.