CN104075075B - A kind of insulating tube - Google Patents

Abstract

The invention relates to the field of heat preservation devices, and discloses a heat preservation pipe, which includes an inner pipe for passing in fluid, at least two heating bands are arranged on the outer wall of the inner pipe, and the outside of the heating bands are sequentially wrapped with nano material insulation layer, calcium silicate insulation layer, glass fiber reinforced plastic composite material layer and insulation layer; the outside of the insulation layer is provided with an outer tube, and the outside of the outer tube is provided with a layer of anti-corrosion layer. Since the thermal insulation pipe in the present invention has a heating band, it can generate heat under the action of an external heating source, and its exterior is provided with a multi-layer insulation layer, which can effectively preserve the heat generated by the heating band, so that the fluid transported in the thermal insulation tube is protected from being affected by heat. Influenced by environments such as low temperature outside, use the insulation pipe of the present invention for transportation, and the transportation efficiency is higher.

Description

a thermal insulation pipe

technical field

The invention relates to the field of heat preservation devices, in particular to a heat preservation pipe.

Background technique

Pipelines are often used for fluid transportation in daily life. Air-conditioning pipelines, water pipelines, gas pipelines, etc. are all used to transport indispensable necessities in life. However, due to different geographical environments, pipelines often have to bear the pressure from the external environment, such as low temperature, high pressure and corrosion. Especially in low-temperature environments, if the pipeline used to transport fluid does not have insulation performance, it will directly affect the state and transportation efficiency of the fluid in the pipeline, such as the pipeline for transporting water. When the ambient temperature of the pipeline is low, if the pipeline Without the function of heat preservation, the water in the pipeline will freeze due to the low temperature, making it impossible to continue transportation.

Another example is the pipeline for transporting crude oil. If the ambient temperature of the pipeline is low, the transportation speed of crude oil will be slowed down, which will directly affect the transportation efficiency.

Therefore, there is an urgent need in the market for a thermal insulation pipe that can keep itself and the fluid transported inside it at a suitable temperature, be less affected by the external low temperature environment, and maintain the efficiency of internal fluid transport.

Contents of the invention

The object of the present invention is to provide a thermal insulation pipe to solve the problem in the prior art that the pipe is greatly affected by the external environment, which causes the fluid transportation efficiency in the pipe to be affected.

For reaching this purpose, the present invention adopts following technical scheme:

A heat preservation pipe, including an inner pipe used for passing fluid inside, at least two heating bands are arranged on the outer wall of the inner pipe, and the outside of the heating bands are successively wrapped with a nanomaterial insulation layer and a calcium silicate insulation layer , FRP composite material layer and insulation layer;

An outer pipe is provided on the outside of the thermal insulation layer, and a layer of anti-corrosion layer is arranged on the outside of the outer pipe.

Preferably, the insulation layer is made of one of asbestos, glass wool, vermiculite or diatomaceous earth.

Further, the thickness of the thermal insulation layer is 5mm-10mm.

Preferably, the heating belt is a thermal resistance heating belt.

Preferably, the heating temperature range of the thermal resistance heating belt is 20°C-120°C.

Preferably, the nanomaterial insulation layer is silica airgel felt.

Preferably, the outer tube is made of polyethylene material.

Preferably, the anti-corrosion layer is a polyurethane paint coating.

Further, the heating belt is connected to an external heating source through wires.

The beneficial effects of the present invention are: since the heat preservation pipe in the present invention has a heating belt, it can generate heat under the action of an external heating source, and its exterior is provided with a multi-layer insulation layer, which can effectively preserve the heat generated by the heating belt, making the heat preservation pipe The fluid transported in the medium is free from the influence of the external low temperature and corrosive environment, and the transportation is carried out by using the insulation pipe of the present invention, and the transportation efficiency is higher.

In the present invention, an anti-corrosion layer is provided on the outermost layer of the heat preservation pipe, and the anti-corrosion layer can effectively protect the heat preservation pipe from threats of various corrosive substances in the external environment.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the insulation pipe proposed in the specific embodiment of the present invention.

In the picture:

1. Inner pipe; 2. Heating belt; 3. Nano material insulation layer; 4. Calcium silicate insulation layer; 5. Fiberglass composite material layer; 6. Insulation layer; 7. Outer pipe.

detailed description

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

As shown in Fig. 1, it is the thermal insulation pipe proposed by the specific embodiment of the present invention, including the inner pipe 1 for passing into the fluid, and the outer wall of the inner pipe 1 is provided with at least two heating bands 2, as a preferred In this embodiment, two heating belts 2 are provided, and the two heating belts 2 are symmetrically distributed, which can make the heat preservation pipe more evenly heated. Wherein, the heating belt 2 is a thermal resistance heating belt. The heating temperature range of the thermal resistance heating belt is 20°C-120°C, and the heating belt 2 is connected to an external heating source through wires. Of course, other methods can also be used for heating.

As a further embodiment, the outside of the heating belt 2 is sequentially wrapped with a nano-material insulation layer 3 , a calcium silicate insulation layer 4 , a fiberglass composite material layer 5 and an insulation layer 6 . An outer pipe 7 is provided on the outside of the thermal insulation layer 6 , and an anti-corrosion layer is provided on the outside of the outer pipe 7 .

Wherein, the thermal insulation layer 6 is made of one of asbestos, glass wool, vermiculite or diatomite. As a preferred embodiment, the thermal insulation layer 6 in the present invention is made of diatomite. The thickness of the thermal insulation layer 6 is 5mm-10mm, and the thickness of the thermal insulation layer 6 in this embodiment is 8mm.

The nanomaterial insulation layer 3 is a silica airgel felt. The outer tube 7 is made of polyethylene material. The anti-corrosion layer is a polyurethane paint coating.

Since the thermal insulation pipe in the present invention has a heating band, it can produce heat under the action of an external heating source, and its exterior is provided with a multi-layer insulation layer, which can effectively preserve the heat generated by the heating band, so that the fluid transported in the thermal insulation tube is protected from heat Influenced by external low temperature and corrosive environment, the insulation pipe of the present invention is used for transportation, and the transportation efficiency is higher.

In the present invention, an anti-corrosion layer is provided on the outermost layer of the heat preservation pipe, and the anti-corrosion layer can effectively protect the heat preservation pipe from threats of various corrosive substances in the external environment.

The above describes the technical principles of the present invention in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present invention, and cannot be construed as limiting the protection scope of the present invention in any way. Based on the explanations herein, those skilled in the art can think of other specific implementation modes of the present invention without creative work, and these modes will all fall within the protection scope of the present invention.

Claims (5)

1. an insulating tube, including internal for being passed through the inner tube (1) of fluid, it is characterised in that: said inner tube (1) Outer wall on be symmetrically arranged with two heating tapes (2), described heating tape (2) are thermal resistance heating tape, described heating tape (2) Outside be enclosed with successively nano material heat-insulation layer (3), calcium silicate heat-preserving layer (4), glass fiber reinforced plastics composite material layer (5) and Heat-insulation layer (6), the outside of described heat-insulation layer (6) is provided with outer tube (7), and the outside of described outer tube (7) is provided with one layer and prevents Corrosion layer；

The thickness of described heat-insulation layer (6) is 5mm-10mm, and described heat-insulation layer (6) is by a kind of system in Vermiculitum or kieselguhr Become；

Described corrosion-resistant coating is polyurethanes lacquer coat.

Insulating tube the most according to claim 1, it is characterised in that: the heating-up temperature of described thermal resistance heating tape is interval It it is 20 DEG C-120 DEG C.

Insulating tube the most according to claim 1, it is characterised in that: described nano material heat-insulation layer (3) is dioxy SiClx aerogel blanket.

Insulating tube the most according to claim 1, it is characterised in that: described outer tube (7) is made up of polythene material.

Insulating tube the most according to claim 1, it is characterised in that: described heating tape (2) lead to external heat source Cross wire to connect.