CN214889429U - Anti-freezing composite pipe - Google Patents

Abstract

An anti-freezing composite pipe relates to the technical field of anti-freezing pipes, and adopts the technical scheme that the composite pipe comprises a metal inner pipe, a heat insulation layer, a heating device and a protective layer; the heating device comprises a temperature sensor and a heating element which are arranged on the outer wall of the metal inner pipe, and a temperature controller, wherein the temperature controller is in signal connection with the temperature sensor and the heating element; the heat preservation layer and the protective layer are sequentially arranged on the outer surface of the metal inner pipe from inside to outside. The utility model can automatically measure the temperature of the liquid medium in the pipe transferred to the outer surface of the metal inner pipe, if the temperature is lower than a certain limit value, the pipeline can be actively heated, the liquid medium can be ensured to flow normally, the fluidity is kept, and the anti-freezing effect is better; the reinforced layer is arranged in the heat preservation layer to increase the strength and rigidity of the pipeline, and the protective layer is arranged outside the heat preservation layer to ensure that the heat preservation layer is not damaged.

Description

Anti-freezing composite pipe

Technical Field

The utility model relates to a pipe technical field prevents frostbite especially relates to a compound pipe prevents frostbite.

Background

In cold weather periods or areas, water supply inconvenience and pipe explosion accidents caused by icing in pipelines often occur, and great inconvenience is brought to daily life and production. Meanwhile, the viscosity of some media in the conveying pipeline is high at low temperature, the fluidity is poor, the conveying cost is increased rapidly, and even pump equipment is burnt due to difficult conveying in severe cases. At present, an anti-freezing pipeline appears in the market, and only the original pipeline is covered with a heat insulation material, so that the anti-freezing pipeline is low in structural strength, easy to damage and limited in anti-freezing effect. Therefore, an efficient and reliable anti-freezing pipeline is needed to restore the normal flow of the liquid medium.

SUMMERY OF THE UTILITY MODEL

To pipeline among the prior art scheme cause the problem of life inconvenience and production loss because of the low temperature, the utility model provides a compound pipe prevents frostbite.

The utility model provides a following technical scheme: an anti-freezing composite pipe comprises a metal inner pipe, a heat insulation layer, a heating device and a protective layer; the heating device comprises a temperature sensor and a heating element which are arranged on the outer wall of the metal inner pipe, and a temperature controller, wherein the temperature controller is in signal connection with the temperature sensor and the heating element; the heat preservation layer and the protective layer are sequentially arranged on the outer surface of the metal inner pipe from inside to outside.

Preferably, a reinforcing layer is further arranged between the heat insulation layer and the metal inner pipe.

Preferably, the heating member includes an electric heating wire and an insulating and heat-conducting layer disposed outside the electric heating wire.

Preferably, the lengths of the reinforcing layer, the heat preservation layer and the protective layer are consistent, and two ends of the metal inner pipe protrude out of the end faces of the reinforcing layer, the heat preservation layer and the protective layer.

Preferably, the heating element extends spirally and is wound around the outer surface of the metal inner pipe.

Preferably, the number of the heating members is provided with at least 2 groups.

Preferably, the reinforcing layer is a glass fiber or carbon fiber composite.

Preferably, the protective layer is a metal pipe or a composite plastic pipe.

The utility model has the advantages that: the heating device is adopted, the temperature of the liquid medium in the pipe transferred to the surface of the metal inner pipe can be automatically monitored, if the temperature is lower than a certain limit value, the pipeline can be actively heated, the liquid medium can be ensured to normally flow, the fluidity is kept, and the anti-freezing effect is good; the enhancement layer is arranged in the heat preservation layer to increase the strength and rigidity of the pipeline, and the protection layer is arranged outside the heat preservation layer to ensure that the heat preservation layer is not damaged and prevent rainwater, dust and the like from entering the heat preservation layer.

Drawings

Fig. 1 is a cross-sectional view of an embodiment of the present invention.

Fig. 2 is a schematic view of an embodiment of the heating element of the present invention.

Fig. 3 is an enlarged view of a portion a of fig. 1.

Fig. 4 is a schematic view of another embodiment of the heating element of the present invention.

Reference numerals: 1-metal inner pipe, 2-heat preservation layer, 3-protective layer, 4-heating element, 5-enhancement layer.

Detailed Description

The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings and reference numerals, so that those skilled in the art can implement the embodiments after studying the specification. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The utility model provides an anti-freezing composite pipe as shown in figures 1-4, which comprises a metal inner pipe 1, a heat preservation layer 2, a heating device and a protective layer 3; the heating device comprises a temperature sensor and a heating element 4 which are arranged on the outer wall of the metal inner pipe 1, and a temperature controller, wherein the temperature controller is in signal connection with the temperature sensor and the heating element 4; the heat preservation layer 2 and the protective layer 3 are sequentially arranged on the outer surface of the metal inner pipe 1 from inside to outside.

The metal inner tube can adopt a stainless steel pipeline as the base tube of the utility model, and the liquid medium directly contacts with the base tube and flows inside the base tube. The heat preservation sets up on the metal inner tube surface, covers whole body for reduce the heat exchange efficiency of metal inner tube and external world, slow down calorific loss, can adopt heat preservation thermal insulation material such as foam rubber goods or fine heat preservation cotton of glass.

The utility model discloses still include heating device, heating device includes temperature sensor, heating member and temperature controller. The temperature sensor and the heating element are both arranged on the outer wall of the metal inner tube, and a safe distance which does not influence each other is kept between the temperature sensor and the heating element, so that the heating element is prevented from interfering with a detection result as much as possible, and particularly, as shown in fig. 4, in one embodiment, the heating element bypasses the temperature sensor during installation. The temperature sensor is used for detecting the real-time temperature of the liquid medium transferred to the outer surface of the metal inner pipe, is in signal connection with the temperature controller, converts the temperature into an electric signal and then transfers the electric signal to the temperature controller. The heating element is used for heating the metal inner tube, so that the temperature of the metal inner tube is increased, heat is transferred to the liquid medium, and the phenomenon that the liquidity is poor due to the fact that the temperature of the liquid medium is too low is avoided; the heating element can adopt electric heating equipment such as an electric heating wire and the like, and covers the outer surface of the metal inner pipe as much as possible, so that the metal inner pipe is heated uniformly. The temperature controller can adopt an S7-200 type programmable logic controller, utilizes the existing PID technology to control the on-off of the heating element according to the temperature electric signal detected by the temperature sensor, specifically, can set a temperature limit according to the fluidity requirement of the liquid medium, and when the temperature detected by the temperature sensor is lower than the temperature limit, the temperature controller opens the heating element to heat the metal inner pipe.

The general intensity of the material that the heat preservation was used always is not enough, and the complex environment that the pipeline was located causes the damage to the heat preservation easily, reduces the heat preservation effect, consequently, outside the heat preservation, still is provided with the inoxidizing coating. The protective layer can adopt a metal pipeline with higher strength to wrap the heat-insulating layer, thereby playing the role of protection and decoration.

Preferably, as shown in fig. 1, a reinforcing layer 5 is further disposed between the insulating layer 2 and the metal inner pipe 1. The reinforcing layer can be made of glass fiber reinforced materials, and can be covered on the outer surface of the metal inner pipe by using the existing filament winding process, so that the structural strength and rigidity of the metal inner pipe are improved, and the heating element is protected from being damaged.

Preferably, the heating member 4 includes an electric heating wire and an insulating and heat-conducting layer disposed outside the electric heating wire.

In one embodiment, the heating element can adopt an electric heating wire, is mature in technology, easy to manufacture and convenient to match with the metal inner pipe. An insulating heat conduction layer is arranged outside the electric heating wire to improve the safety. The electric heating wire can be made of common materials such as iron-chromium-aluminum alloy, nickel-chromium alloy and the like, and the insulating heat conduction layer can be made of materials such as an aluminum oxide composite sleeve and the like, and has good insulating property and heat conduction property.

Preferably, the length of enhancement layer 5, heat preservation 2 and inoxidizing coating 3 is unanimous, the both ends of metal inner tube 1 all protrude the terminal surface of enhancement layer 5, heat preservation 2 and inoxidizing coating 3 can regard as the interface, utilizes the strong characteristics of metal pipeline scalability, conveniently is connected with other pipelines.

Preferably, the heating member 4 extends spirally and is wound around the outer surface of the metal inner pipe 1. As shown in fig. 2, the heating member is spirally wound around the outer surface of the metal inner tube to uniformly generate heat at the outer circumference of the metal inner tube.

Preferably, the quantity of heating member 4 is provided with 2 groups at least, and one of them group of heating member can be as reserve, prevents that another group of heating member from damaging the back and not influencing the normal use of whole pipeline, promotes the life of pipeline, and second is under the condition that the temperature is low excessively, and two groups of heating members can be opened simultaneously, improve the efficiency of generating heat.

Preferably, the reinforcing layer 5 is made of glass fiber or carbon fiber composite material, and has the characteristics of high strength, good heat resistance, small specific gravity and small deformation.

Preferably, the protective layer 3 is a metal pipe or a composite plastic pipe. The metal pipe is a thin-wall stainless steel pipeline, so that the metal pipe is excellent in tolerance and attractive; the composite plastic pipe has lower cost, and can be internally provided with aluminum foil as a heat reflection layer.

The foregoing is directed to one or more embodiments of the present invention, which are described in some detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (8)

1. The utility model provides a compound pipe prevents frostbite, includes metal inner tube (1) and heat preservation (2), its characterized in that: the device also comprises a heating device and a protective layer (3);

the heating device comprises a temperature sensor and a heating element (4) which are arranged on the outer wall of the metal inner pipe (1), and a temperature controller, wherein the temperature controller is in signal connection with the temperature sensor and the heating element (4);

the heat preservation layer (2) and the protective layer (3) are sequentially arranged on the outer surface of the metal inner pipe (1) from inside to outside.

2. The antifreeze composite pipe of claim 1, wherein: and a reinforcing layer (5) is also arranged between the heat-insulating layer (2) and the metal inner pipe (1).

3. The antifreeze composite pipe of claim 2, wherein: the heating member (4) comprises an electric heating wire and an insulating heat conduction layer arranged outside the electric heating wire.

4. The antifreeze composite pipe of claim 3, wherein: the length of enhancement layer (5), heat preservation (2) and inoxidizing coating (3) is unanimous, the both ends of metal inner tube (1) all protrude the terminal surface of enhancement layer (5), heat preservation (2) and inoxidizing coating (3).

5. The antifreeze composite pipe of claim 3, wherein: the heating element (4) extends spirally and is wound on the outer surface of the metal inner pipe (1).

6. The antifreeze composite pipe of claim 5, wherein: the number of the heating members (4) is at least provided with 2 groups.

7. The antifreeze composite tube of any one of claims 2 to 6, wherein: the reinforcing layer (5) is made of glass fiber or carbon fiber composite material.

8. The antifreeze composite tube of any one of claims 1 to 6, wherein: the protective layer (3) is a metal pipe or a composite plastic pipe.

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