CN204968136U - PTC plastic pipe that generates heat - Google Patents

Abstract

The utility model discloses a PTC plastic pipe that generates heat, it includes plastic pipe, plastic pipe's surface cladding has the polymer PTC layer that generates heat, polymer PTC generates heat the in situ and is equipped with two electrode conductors, two electrode conductors are pre -buried in the face of cylinder of the laminiform one -tenth that is generated heat by polymer PTC that the heliciform was parallel to each other. Has following advantage: simple structure, the form of relocating conduct heat for conducting heat on the face of cylinder in the total length, and heat -conduction obtains very big the improvement, adopt the polymer PTC layer cladding plastic pipe that generate heat, can make that plastic pipe is whole to be heated, and the pipeline is heated evenly, avoids pipeline part high temperature, overall dimension very reduces to by the contrast of water back diameter, this structure overall dimension only is equivalent to 15-13 of primary structure equally, the quality is more light, favourable outdoor open -air installation, material consumption is few, and is with low costs.

Description

PTC generates heat plastic pipe

Technical field

The utility model belongs to Liquid transfer field, particularly a kind of PTC heating plastic pipe.

Background technology

The main purpose heated pipeline freezes at Cold Winter prevention fluids within pipes to block or heating ice-melt.The existing mode of heating to pipeline mostly is and outside pipeline, touch tube-surface lay a heating tape or heating cable, provides heat source pipeline by heating tape or heating cable.Owing to being justified respectively and approximate rectangle by the cross section of water back and heating cable, contact with each other and be only wire-shaped contact, contact area is little, and heat transfer area is just little, and thus thermal resistance is large, and heat-transfer effect is poor; For improving thermal conduction effect or promoting by the temperature in heating tube, also must increase heating power, and wrap up with thicker heat-insulation layer and be incubated, and the oversheath of coated adequate thickness.Both increase power consumption like this, whole conduit component overall dimension (diameter) can be made again comparatively large, conduit component coiling difficulty itself, heavier mass, in outdoor, outdoor installation is very inconvenient.And in some pipeline, require the occasion of high temperature, owing to not reaching required temperature, limit the range of application of this conduit component.Material consumption is large in addition, and cost height is its another large defect.If application publication number is CN101769406A, name is called that a kind of Chinese invention of metallic electrothermal composite insulating pipe is applied for a patent, this multiple tube is by being incubated interior pipe 3, insulation material 1, electric lead 4 is formed, electric lead 4 is wrapped on interior pipe 3 outer wall of insulation, insulation material 1 is covered with outside electric lead 4, find out by figure, the cross section of electric lead 4 is circular, in insulation, the cross section of pipe 3 is also circular, therefore electric lead 4 is linear contact lay with pipe 3 in insulation, in addition when water back, what pipeline started most by thermal site is and electric conductor joint, then spread to surrounding gradually, this mode of heating easily causes pipe local temperature in insulation too high, entirety is heated uneven, in addition, this multiple tube processing technology is complicated, and in order to reach reasonable heat insulation effect, the insulation material of employing is thicker, causes the size of product bigger than normal, installs inconvenient.

Utility model content

Technical problem to be solved in the utility model is, a kind of PTC heating plastic pipe provided, and structure is simple, and shape of relocating heat transfer is the face of cylinder heat transfer in total length; Because heat transfer is good, do not need too large heating power, simultaneously without the need to thick and heavy heat-insulation layer, thus overall dimension greatly reduces, and to be contrasted by water back diameter equally, construction profile size of the present invention is only equivalent to 1/5 ~ 1/3 of original structure.

For solving the problems of the technologies described above, the PTC heating plastic pipe that the utility model provides, it comprises plastic pipe, the outer surface of described plastic pipe is coated with polymer PTC heating layer, two electrode conductors are provided with, in the face of cylinder that what described two electrode conductors were parallel to each other in the shape of a spiral be embedded in is formed by polymer PTC heating layer in described polymer PTC heating layer.Voltage is applied between two electrode conductors, because electrode conductor helical form is embedded in polymer PTC heating layer, so improve the firing rate on the face of cylinder formed by polymer PTC heating layer, again because being Cylindrical Surfaces Contact between polymer PTC heating layer and plastic pipe, being wrapped in plastic pipe in PTC heating layer just can thermally equivalent, therefore greatly improve the heat transfer between polymer PTC heating layer and plastic pipe, effectively avoid pipeline localized hyperthermia.

As preferably, described polymer PTC heating layer surface is provided with helical raised, and this helical raised is formed by two electrode conductors be embedded in polymer PTC heating layer.

As preferably, outside described polymer PTC exothermic material pipe, be compounded with oversheath.There is protective polymers PTC heating layer and body insulation effect.

As preferably, described electrode conductor is multiply copper core.Conductive coefficient is better.

After adopting above structure, PTC of the present utility model generates heat plastic pipe compared with prior art, have the following advantages: structure is simple, shape of relocating heat transfer is the face of cylinder heat transfer in total length, heat transfer obtains and greatly improves, and adopts the coated plastic pipe of polymer PTC heating layer, plastic pipe entirety can be made to be heated, pipeline is heated evenly, and avoids pipeline localized hyperthermia; Overall dimension greatly reduces, and to be contrasted by water back diameter equally, this construction profile size is only equivalent to 1/5 ~ 1/3 of original structure; Quality is more light, the outdoor installation in favourable outdoor; Material consumption is few, and cost is low.

Accompanying drawing explanation

Fig. 1 is the utility model front view;

Fig. 2 is the front view that the utility model removes oversheath;

Fig. 3 is left view in Fig. 1.

Wherein: 1, plastic pipe, 2, polymer PTC heating layer, 3, electrode conductor, 4, oversheath.

Embodiment

Below by embodiment, the utility model will be further described by reference to the accompanying drawings.

As Fig. 1-3 shows, the PTC heating plastic pipe that the present embodiment provides, it comprises plastic pipe 1, the outer surface of described plastic pipe 1 is coated with polymer PTC heating layer 2, two electrode conductors 3 are provided with in described polymer PTC heating layer 2, in the face of cylinder that what described two electrode conductors 3 were parallel to each other in the shape of a spiral be embedded in is formed by polymer PTC heating layer 2, described polymer PTC heating layer 2 is coated with oversheath 4.

Described polymer PTC heating layer 2 surface is provided with helical raised, and this helical raised is formed by two electrode conductors 3 be embedded in polymer PTC heating layer.Described electrode conductor 3 is multiply copper core.

Claims (4)

1. a PTC heating plastic pipe, it is characterized in that: it comprises plastic pipe, the outer surface of described plastic pipe is coated with polymer PTC heating layer, two electrode conductors are provided with, in the face of cylinder that what described two electrode conductors were parallel to each other in the shape of a spiral be embedded in is formed by polymer PTC heating layer in described polymer PTC heating layer.

2. PTC heating plastic pipe according to claim 1, it is characterized in that: described polymer PTC heating layer surface is provided with helical raised, this helical raised is formed by two electrode conductors be embedded in polymer PTC heating layer.

3. PTC heating plastic pipe according to claim 1, is characterized in that: described polymer PTC heating layer is coated with oversheath.

4. PTC heating plastic pipe according to claim 1, is characterized in that: described electrode conductor is multiply copper core.