1. The utility model provides a thermal insulation structure of no benefit mouth of heating power pipeline is connected to socket joint formula which characterized in that: comprises a plurality of sections of same socket type pipelines which are sealed in series end to end; the spigot-and-socket pipeline comprises a bell mouth and a spigot, and the spigot can be in sealed spigot-and-socket communication with the bell mouth on the spigot-and-socket pipeline;

an insulating layer and an outer protection pipe are prefabricated on the outer peripheral side of the main body of the socket type pipeline, wherein the insulating layer and the outer protection pipe are arranged on the outer peripheral side of the bell mouth;

an annular groove is formed in the inner wall of the socket, a sealing rubber ring is arranged in the annular groove, and the socket are in sealing communication through the sealing rubber ring;

a rubber telescopic pad is sleeved at the position of the contact end face of the socket and the socket; the outer peripheral side of an end face connecting gap between the socket and the insertion opening is wrapped in a sealing winding mode through a heat-shrinkable belt.

2. The non-repaired mouth insulation structure of the socket type connection thermal pipeline according to claim 1, characterized in that: and an insulating layer and an outer protective pipe are prefabricated on the outer peripheral side of the main body of the socket type pipeline and the outer peripheral side of the bell mouth in a full-covering mode.

3. The non-repaired mouth insulation structure of the socket type connection thermal pipeline according to claim 2, characterized in that: the outer protective pipe is sleeved on the outer peripheral side of the socket type pipeline in a prefabricated mode, and the heat insulation layer is filled between the socket type pipeline and the outer protective pipe.

4. The non-repaired mouth insulation structure of the socket type connection thermal pipeline according to claim 1, characterized in that: the spigot is a tubular structure which extends out of the end surface of the socket type pipeline and is inserted in the socket.

5. The non-repaired mouth insulation structure of the socket type connection thermal pipeline according to claim 1, characterized in that: the sealing rubber ring is arranged in the annular groove in a limiting and sealing mode.

6. The non-repaired mouth insulation structure of the socket type connection thermal pipeline according to claim 1, characterized in that: the outer protecting pipe is made of high-density polyethylene material.

Background

In recent years, prefabricated direct-buried heat-insulation heat distribution pipelines adopting a welding connection mode are widely applied to the field of central heating. According to the requirements of GB/T29047-. The joint coating mode of the welding pipeline joint heat-insulating material and the outer protecting pipe seriously reduces the construction efficiency of the heat distribution pipeline, and because the uniformity of the hard polyurethane heat-insulating material filled by foaming on site is poor, a heat bridge is easy to appear at the joint heat-insulating layer, so that the high-density polyethylene outer protecting pipe exceeds the safe temperature, and the service life and the operation safety of the heat distribution pipeline are further influenced.

The comprehensive mechanical property of the nodular cast iron is close to that of steel, the nodular cast iron pipe has high corrosion resistance, the nodular cast iron pipe is in socket joint type flexible connection, the nodular cast iron pipe has unique advantages in the aspects of installation difficulty, construction efficiency, anti-seismic performance and the like, and the nodular cast iron pipe can be applied to the field of central heating, so that the construction efficiency can be further improved, the operation safety can be guaranteed, the service life of the pipe can be prolonged, and the economy of the whole life cycle can be improved.

The invention provides a prefabricated heat-preservation full-coverage heat-preservation structure of a joint-free heating power pipeline based on a socket type pipeline form, which can greatly improve the on-site construction efficiency of the pipeline and ensure the heat-preservation quality of the whole pipeline.

Disclosure of Invention

The invention aims to provide a non-repaired mouth heat insulation structure of a socket joint type connecting heat distribution pipeline, which solves the problem of the non-repaired mouth heat insulation structure of the conventional socket joint type connecting heat distribution pipeline.

In order to solve the technical problems, the invention adopts the following technical scheme:

the invention provides a non-repaired mouth heat preservation structure of a socket joint type connection heating power pipeline, which comprises a plurality of sections of same socket joint type pipelines which are sealed in series end to end; the spigot-and-socket pipeline comprises a bell mouth and a spigot, and the spigot can be in sealed spigot-and-socket communication with the bell mouth on the spigot-and-socket pipeline;

an insulating layer and an outer protection pipe are prefabricated on the outer peripheral side of the main body of the socket type pipeline, wherein the insulating layer and the outer protection pipe are arranged on the outer peripheral side of the bell mouth;

an annular groove is formed in the inner wall of the socket, a sealing rubber ring is arranged in the annular groove, and the socket are in sealing communication through the sealing rubber ring;

a rubber telescopic pad is sleeved at the position of the contact end face of the socket and the socket; the outer peripheral side of an end face connecting gap between the socket and the insertion opening is wrapped in a sealing winding mode through a heat-shrinkable belt.

In this embodiment, it is further optimized that an insulating layer and an outer protection pipe are prefabricated on the outer peripheral side of the main body of the socket pipe and the outer peripheral side of the socket in a full-covering manner, wherein the sealing performance of the socket pipe in the installation of the joint is improved by prefabricating in the full-covering manner.

In this embodiment, it is further optimized that the outer protection pipe is sleeved on the outer peripheral side of the socket pipe in a prefabricated manner, the insulating layer is filled between the socket pipe and the outer protection pipe, the insulating layer is made of a polyurethane material, and poor uniformity of filling a rigid polyurethane insulating material in a foam on site is avoided by the prefabricated manner.

In this embodiment, it is further preferable that the spigot is a tubular structure extending out of the end face of the socket pipe and inserted into the socket.

In this embodiment, it is further optimized that the sealing rubber ring is mounted in the annular groove in a limiting and sealing manner, wherein the annular groove can be designed as a variable-diameter annular groove, so as to limit the sealing rubber ring therein.

In this embodiment, it is further optimized that the outer sheath is made of a high density polyethylene material.

Compared with the prior art, the invention has the beneficial technical effects that:

in the application, the thermal pipeline is connected in a socket joint mode, the prefabricated thermal insulation material and the outer protection pipe are fully covered, and compared with the prefabricated direct-buried thermal insulation thermal pipeline adopting a welding connection mode, the outer protection pipe does not need to be welded on site and additionally pasted and foamed and filled with the thermal insulation material, so that the construction efficiency of the thermal pipeline is improved, and the problems that the thermal bridge is generated at the interface thermal insulation layer due to nonuniform on-site foaming, the high-density polyethylene outer protection pipe exceeds the safe temperature, and the service life and the operation safety of the thermal pipeline are influenced are solved; set up at the kneck and possess flexible rubber expansion pad and pyrocondensation area, the flexible that adaptable heating power pipeline temperature variation caused avoids the extrusion of joint department heat preservation and outer pillar to destroy, is showing the security that improves the pipeline operation.

Drawings

The invention is further illustrated in the following description with reference to the drawings.

FIG. 1 is a schematic view of a thermal insulation structure without a joint of the present invention;

description of reference numerals:

1. a socket;

2. a heat-insulating layer;

3. an outer protecting pipe;

4. a heat-shrinkable tape;

5. a rubber expansion pad;

6. a socket;

7. and sealing the rubber ring.

Detailed Description

As shown in fig. 1, this embodiment discloses a thermal insulation structure without a joint, which is connected to a thermal pipeline in a socket-and-spigot manner, and includes a plurality of socket-and-spigot pipelines that are identical and sealed in series end to end.

The two ends of the socket type pipeline are respectively provided with a bell mouth 1 and a spigot 6, and the spigot 6 can be in sealed socket communication with the bell mouth 1 on the adjacent socket type pipeline;

an insulating layer 2 and an outer protecting pipe 3 are prefabricated on the outer peripheral side of the main body of the socket type pipeline, wherein the insulating layer 2 and the outer protecting pipe 3 are installed on the outer peripheral side of the bell mouth 1, so that the outer diameter of the socket 6 is smaller than that of the bell mouth 1; in this embodiment, the spigot 6 is a tubular structure extending out of the end surface of the spigot-and-socket pipe and inserted into the socket 1; wherein the outer protective pipe is made of high-density polyethylene material;

in the embodiment, an insulating layer 2 and an outer protecting pipe 3 are prefabricated on the outer peripheral side of the main body of the socket type pipeline and the outer peripheral side of the bell mouth 1 in a full-covering mode; the outer protecting pipe 3 is sleeved on the outer peripheral side of the socket type pipeline in a prefabricated mode, and the heat insulation layer 2 is filled between the socket type pipeline and the outer protecting pipe 3; wherein through the full cover of prefabricated heat preservation 2 and outer pillar 3, can avoid heating power pipeline to carry out secondary filling insulation material again to the kneck when the installation to reach and improve the efficiency of construction by a wide margin, ensure whole pipeline heat preservation quality simultaneously.

An annular groove is formed in the inner wall of the socket 1, a sealing rubber ring 7 is arranged in the annular groove, the socket 6 is in sealing communication with the socket 1 through the sealing rubber ring 7, specifically, the sealing rubber ring 7 is extruded between the socket 1 and the socket 6, and the socket 1 and the socket 6 compress and deform the sealing rubber ring 7, so that the sealing effect is achieved.

A rubber telescopic pad 5 is sleeved at the position of the contact end face of the socket 1 and the socket 6; the joint gap of the outer protective pipe 3 between the bell mouth 1 and the socket 6 is wrapped by a heat-shrinkable belt 4 in a sealing and winding way;

in this embodiment, the sealing rubber ring 7 is installed in the annular groove in a limiting and sealing manner, and specifically, the annular groove is designed to be of a reducing structure, so that the sealing rubber ring 7 is prevented from slipping when the socket 1 and the socket 6 are subjected to peristaltic deformation.

In this embodiment, the outer diameter of the rubber telescopic pad 5 is smaller than the outer diameter of the socket type pipeline, that is, a local gap is reserved on the end faces of the two socket type pipelines, and then the heat-shrinkable belt 4 is tightly wound for sealing;

in another embodiment, the outer diameter of the rubber telescopic pad 5 is equal to the outer diameter of the socket pipe, and the heat-shrinkable belt 4 is directly wound on the outer peripheral side of the connection position of the socket pipe and the rubber telescopic pad 5;

in this embodiment, through possessing elastic rubber expansion pad 5 and pyrocondensation area 4, the adaptable heating power pipeline temperature variation causes is flexible, avoids the extrusion destruction to interface department heat preservation and outer pillar, is showing the security that improves the pipeline operation.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used for convenience of description only, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above embodiments are only for describing the preferred mode of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.