CN217503023U - Electric tracing belt device for pipeline - Google Patents

Abstract

The application discloses an electric heat tracing band device for a pipeline, which belongs to the field of pipeline protection for construction and comprises an inner pipe, wherein the outer part of the inner pipe is coated with a heat-insulating interlayer in the length direction, and the heat-insulating interlayer is of a long-strip flat structure and is spirally wound on the outer surface of the inner pipe; the heat-insulation interlayer forms a spiral notch extending along the length direction of the inner pipe on the outer surface of the inner pipe, an electric tracing band is laid in the spiral notch, and the electric tracing band is laid along the path of the spiral notch; and a shell is coated outside the heat-insulating interlayer. In view of above-mentioned technical scheme, this application can realize the initiative heat preservation of water supply line through insulation construction's improvement, reduces the self weight of water supply line and because of the structure that keeps warm and cause is too fat, guarantees the normal stable work of water supply line.

Description

Electric tracing belt device for pipeline

Technical Field

The utility model belongs to pipeline protection field for the construction, specifically speaking especially relates to an electric heat tracing belt device for pipeline.

Background

In the construction process, according to the requirements of the construction process, heat preservation operation needs to be carried out on a water supply pipeline for construction in the weather with lower air temperature, so that the pipeline is prevented from being damaged. For a water supply pipeline with a relatively fixed position, if a large amount of heat insulation materials are adopted for coating, the weight of the water pipe is increased, the strength of the water pipe is reduced, the structure is overstaffed, and the passive heat insulation effect is not ideal.

Therefore, when the weather with low temperature is met, such as winter, the water supply pipeline for construction is actively insulated, and a proper insulation structure is selected, so that the normal work of the water supply pipeline can be ensured, and the water supply pipeline can be prevented from being too bulky and bearing insulation weight.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pipeline is with electric tracing band device, its initiative that can realize the supply channel through insulation construction's improvement keeps warm, reduces the self weight of supply channel and because of keeping warm the overstaffed that causes structurally, guarantees the normal stable work of supply channel.

In order to achieve the purpose, the utility model is realized by the following technical proposal:

an electric tracing band device for pipelines comprises an inner pipe, wherein a heat-insulating interlayer is coated outside the inner pipe in the length direction of the inner pipe, is of a long-strip-shaped flat structure and is spirally wound on the outer surface of the inner pipe; the heat-insulation interlayer forms a spiral notch extending along the length direction of the inner pipe on the outer surface of the inner pipe, an electric tracing band is laid in the spiral notch, and the electric tracing band is laid along the path of the spiral notch; and a shell is coated outside the heat-insulating interlayer.

Further, say, the utility model discloses in the shell include shell, lower shell, go up the shell and all have convex casing and be located convex casing both sides and the casing connecting plate of outside extension with shell down, casing connecting plate distributes on the length direction of self has a plurality of through-holes, wears to be equipped with fastening screw in the through-hole.

Further, the utility model discloses in last shell, lower shell processing respectively on the contact surface of casing connecting plate has the caulking groove that supplies the sealing strip to place, the caulking groove sets up on the length direction of casing connecting plate.

Further, the utility model discloses in the through-hole position department that supplies fastening screw to pass of casing connecting plate be provided with the coaxial reinforcement pipe of through-hole.

Furthermore, the utility model discloses in the electric tracing area distribute on the route of its spiral winding inner tube has a plurality of location cushion, the top surface of location cushion and last shell and/or the inner wall contact of shell down.

Further, in the utility model, the last shell, lower shell joint respectively at its tip have the shutoff circle, the shutoff circle has the wire bullport that two parallel metal conductor stretched out in the power supply tracing band for ring body and ring body are reserved on the ring body.

Further, say, the utility model discloses in the shutoff circle be provided with the inner seal circle in the inner circle border position department of ring body, be provided with the external seal circle in the outer lane border position department of ring body, the outer wall contact of internal seal circle and inner tube, the contact of external seal circle and last shell, the shell inner wall that the shell constitutes down.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses an adopt the electric tracing band and with the structure that the electric tracing band suited, can realize that the initiative of job site supply channel keeps warm, and can strengthen the intensity of supply channel when increasing the heat preservation effect through structural design, avoid the structure of supply channel to be overstated.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic diagram of the internal structure of the present invention.

Fig. 3 is a cross-sectional view of the present invention.

Fig. 4 is a structural schematic diagram of the plugging ring.

In the figure: 1. an upper housing; 2. a lower housing; 3. an inner tube; 4. a heat-insulating interlayer; 5. an electric tracing band; 6. a sealing strip; 7. a helical notch; 8. a housing connecting plate; 9. fastening screws; 10. reinforcing the pipe; 11. plugging rings; 12. an outer sealing ring; 13. an inner seal ring; 14. a wire guide hole; 15. and positioning the cushion block.

Detailed Description

The technical solution of the present invention will be further described and explained with reference to the accompanying drawings. The terms of orientation used in the detailed description are merely provided to facilitate a person skilled in the art to understand the technical solutions described in the present application according to the visual orientations shown in the drawings. Unless otherwise specifically stated or limited, the terms "disposed," "mounted," "connected," and the like are to be construed broadly and their specific meanings in the present disclosure may be understood by those skilled in the art as appropriate.

As shown in fig. 1 to 3, an electric tracing band device for pipeline comprises an inner pipe 3, wherein the inner pipe 3 can be a water supply pipeline or a pipeline connected with the water supply pipeline by a pipeline connection mode.

The outer portion of inner tube 3 has twined heat preservation intermediate layer 4 in its length direction, heat preservation intermediate layer 4 is rectangular platykurtic structure, and its cross-section is preferred the rectangle. After the heat insulating interlayer 4 is wound around the outer wall of the inner pipe 3 in a spiral structure, a spiral notch 7 having a spiral structure is formed in the outer wall of the inner pipe 3. In the laying process of the heat-insulating interlayer 4 and the inner pipe 3, the joint surface of the heat-insulating interlayer 4 and the inner pipe 3 can be coated with adhesive to assist in connection. The heat-insulating interlayer 4 can adopt a strip-shaped flat belt body made of rubber and plastic heat-insulating cotton to form a spiral structure on the inner pipe 3 in a winding mode.

The electric tracing band 5 is located in the spiral notch 7 and runs along the path of the spiral notch 7. In order to ensure the stability of the installation of the electric trace band 5, a plurality of positioning pads 15 may be distributed on the path of the electric trace band 5. After the upper shell 1 and the lower shell 2 are connected, the electric tracing band 5 can be attached to the inner pipe 3 by applying force to the positioning cushion block 15. The positioning cushion block 15 is a flame-retardant rubber block.

The heat-insulating interlayer 4, the electric tracing band 5 and the positioning cushion block 15 are all coated by shells coaxially arranged with the inner pipe 3, each shell comprises an upper shell 1 and a lower shell 2, the upper shell 1 and the lower shell 2 are respectively provided with an arc-shaped shell for accommodating the structure, and shell connecting plates 8 extend outwards from two sides of the arc-shaped shell. The shell connecting plate 8 is distributed with a plurality of through holes in the length direction of the shell connecting plate, and the through holes are connected with the fastening screws 9. The shell connecting plate 8 is provided with a reinforcing pipe 10 coaxial with the through hole at the position of the through hole, and a fastening screw 9 penetrates through the reinforcing pipe 10 to increase the connecting acting force and the strength of the connecting part.

The end parts of the upper shell 1 and the lower shell 2 are also connected with a plugging ring 11. The plugging ring 11 is a ring-shaped structural plate body, the inner ring of the plugging ring is connected with the inner pipe 3, and the outer ring of the plugging ring is connected with the inner wall of the shell. Specifically, the plugging ring 11 is provided with an inner sealing ring 13 at the edge position contacting with the inner pipe 3, and the inner sealing ring 13 is made of a flame-retardant rubber material, such as neoprene, chlorosulfonated polyethylene, polyvinyl chloride, silicone rubber, and the like. The plugging ring 11 is provided with an outer sealing ring 12 at the edge position where the plugging ring contacts with the upper shell 1 and the lower shell 2, and the outer sealing ring 12 and the inner sealing ring 13 are made of flame-retardant rubber materials.

The prior art electric trace band 5 is composed of a conductive polymer and two parallel metal wires and an insulating sheath. The electric tracing band 5 adopts a self-limiting electric tracing band, a semiconductor high polymer material with a heating function is distributed between two conductive cores of the self-limiting electric tracing band, and the outer part of the self-limiting electric tracing band is composed of a high polymer inner sheath, an alloy shielding net and a high polymer outer sheath. When current flows, the resistance of the cable is increased along with the temperature increase of the electric tracing band. The result is that the output power of the electric trace band decreases as its temperature increases. Since the heat tracing power varies with the temperature at various locations on the electric heat tracing band, the heated semiconductor core material exhibits a variable temperature resistance which is opposite to the high/low variation trend of the heating temperature. The self-limiting electric tracing band does not overheat even if it is overlapped. The self-limiting electric tracing band can be cut at will on site to accurately correspond to the actual laying length of the pipeline without special tools, and the installation is very simple and convenient. Two parallel metal leads in the electric tracing band 5 extend out of a lead guide hole 14 of the blocking ring 11, and a gasket can be arranged at the lead guide hole 14 in a penetrating mode to avoid abrasion of the through hole and the leads.

Of course, as a preferable mode, if the inner pipe 3 is a water supply pipeline made of PVC or the like, the inner pipe 3 may be wound around the heat-insulating interlayer 4 and the electric tracing band 5, and then the heat-insulating interlayer 4 and the electric tracing band 5 may be covered with tinfoil and then connected to the upper casing 1 and the lower casing 2. The advantage of above-mentioned structure lies in, can furthest holds the heat that electric tracing band 5 gived off in the inner space that upper shell 1, lower shell 2 formed to furthest acts on inner tube 3, avoids the water body that carries in inner tube 3 to freeze at low temperature or because of freezing the inner tube 3 frost crack that causes.

Finally, although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description of the present description is for clarity reasons only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims (7)

1. The utility model provides an electric tracing band device for pipeline, includes inner tube (3), the outside cladding of inner tube (3) has heat preservation intermediate layer (4) in its length direction, its characterized in that: the heat-insulating interlayer (4) is of a strip-shaped flat structure and is spirally wound on the outer surface of the inner tube (3); the heat-insulation interlayer (4) forms a spiral gap (7) extending along the length direction of the inner pipe (3) on the outer surface of the inner pipe (3), an electric tracing band (5) is laid in the spiral gap (7), and the electric tracing band (5) is laid along the path of the spiral gap (7); the outer part of the heat-insulating interlayer (4) is coated with a shell.

2. An electric heat tracing belt device for pipeline according to claim 1, characterized in that: the shell comprises an upper shell (1) and a lower shell (2), the upper shell (1) and the lower shell (2) are provided with arc-shaped shells and shell connecting plates (8) which are positioned on two sides of the arc-shaped shells and extend outwards, a plurality of through holes are distributed in the shell connecting plates (8) in the length direction of the through holes, and fastening screws (9) are arranged in the through holes in a penetrating mode.

3. An electric heat tracing belt device for pipeline according to claim 2, characterized in that: go up shell (1), lower shell (2) and process respectively on the contact surface of casing connecting plate (8) and have the caulking groove that supplies sealing strip (6) to place, the caulking groove sets up on the length direction of casing connecting plate (8).

4. An electric heat tracing belt device for pipeline according to claim 2, characterized in that: and a reinforcing pipe (10) which is coaxial with the through hole is arranged at the position of the through hole for the fastening screw (9) to pass through on the shell connecting plate (8).

5. An electric heat tracing belt device for pipeline according to claim 2, characterized in that: the electric tracing band (5) is provided with a plurality of positioning cushion blocks (15) on the path of the spiral winding inner pipe (3), and the top surfaces of the positioning cushion blocks (15) are contacted with the inner walls of the upper shell (1) and/or the lower shell (2).

6. An electric tracing band apparatus for pipeline according to any one of claims 2 to 5, characterized in that: the end parts of the upper shell (1) and the lower shell (2) are respectively clamped with a plugging ring (11), the plugging rings (11) are ring bodies, and a guide wire guide hole (14) for two parallel metal guide wires in the power supply tracing band (5) to extend out is reserved on each ring body.

7. An electric heat tracing belt device for pipeline according to claim 6, characterized in that: the inner sealing ring (13) is arranged at the edge position of the inner ring of the ring body of the plugging ring (11), the outer sealing ring (12) is arranged at the edge position of the outer ring of the ring body, the inner sealing ring (13) is in contact with the outer wall of the inner pipe (3), and the outer sealing ring (12) is in contact with the inner wall of a shell formed by the upper shell (1) and the lower shell (2).

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