CN219221674U

CN219221674U - Joint coating device applied to prefabricated directly-buried heat-insulation pipeline

Info

Publication number: CN219221674U
Application number: CN202222975210.5U
Authority: CN
Inventors: 雷伟; 任矿; 田波; 惠荷; 张国龙; 郭文雄; 崔雷; 樊磊; 牛红; 李宇建; 李伟
Original assignee: Xi'an Zhongchuang District Comprehensive Energy Co ltd
Current assignee: Xi'an Zhongchuang District Comprehensive Energy Co ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-06-20
Anticipated expiration: 2032-11-09

Abstract

The utility model relates to the technical field of heat-insulating pipelines, in particular to a joint coating device applied to a prefabricated directly-buried heat-insulating pipeline, which has the technical scheme that: the device comprises an annular sleeve and an electric heating wire, wherein the annular sleeve is sleeved on an embedded pipe, the electric heating wire is arranged on the inner wall of the annular sleeve, and the annular sleeve and the embedded pipe are made of polyurethane materials; wherein, form the filler chamber between the inner wall of annular cover and the outer wall of embedded pipe, set up the filler mouth with filler chamber intercommunication on the outer wall of annular cover, be equipped with the power connection who is connected with the heating wire electricity on the outer wall of annular cover. The utility model ensures that the operation process of the pre-buried pipeline joint is flow-shaped, standardized and normalized, improves the joint working quality, improves the joint process operation efficiency, reduces the energy waste and improves the economic benefit of enterprises.

Description

Joint coating device applied to prefabricated directly-buried heat-insulation pipeline

Technical Field

The utility model relates to the technical field of heat-insulating pipelines, in particular to a joint coating device applied to a prefabricated directly-buried heat-insulating pipeline.

Background

In the process of building urban infrastructure, heat-insulating or cold-insulating pipelines are usually required to be arranged for the functions of heat supply or cold supply, water supply and the like of buildings. The pipeline is generally prefabricated in a factory, and the length of a single pipeline is less than or equal to 12m, so that the pipeline needs to be connected on site in the practical application of a transmission and distribution pipeline to meet the requirement of medium conveying. The working steel pipes of the heat supply (cold) pipeline are generally welded, and the hard polyurethane heat-insulating layer and the high-density polyethylene outer protective shell are generally used for supplementing the notch (called heat-insulating joint) of the joint of the two sections of pipelines in a site construction mode. At present, the forms of the joint coating modes adopted in engineering construction are different, certain potential safety hazards exist in different degrees or a large amount of heat (cold) quantity is lost, and immeasurable economic losses are caused for property units.

The existing prefabricated directly buried heat-insulating pipeline heat-insulating joint for heat supply (cooling) mainly adopts the following mode, a high-density polyethylene coiled material with a thickness is adopted, the joint is cut on site according to the pipe diameter of a site pipeline and the joint length, two sides are fixed in a bonding mode, a bundling mode and the like, or two sides are fixed in a heat shrinkage belt baking shrinkage mode and a spray gun hot melting mode, and an axis direction notch is sealed in a bonding mode. And after the two sides and the axis direction are closed, opening holes on the surface in a manual starting mode, and injecting the prepared polyurethane for foaming operation.

However, the method for manufacturing the prefabricated directly-buried heat-insulating pipeline heat-insulating joint for heating (cooling) has certain technical defects, firstly, high-density polyethylene coiled materials with one specification are adopted for different pipe diameters on a construction site, and the polyethylene coiled materials with fixed thickness cannot meet the requirements of the national standard of the wall thickness of the prefabricated directly-buried heat-insulating pipe and pipe fitting of the rigid foamed plastic of the high-density polyethylene outer protection pipe (GB/T29047-2012), particularly the outer protection pipe with large pipe diameter. Secondly, two common construction methods are greatly affected by the level of worker technology. Thirdly, the sealing performance of the pipeline after running can not be ensured by the processes of on-site coiled material overlap joint gap axial gap bonding, two-section circumferential gap bonding or bundling and the like, the situation that the bonding port is cracked and water enters can occur after the running time is long, and then rainwater enters the heat preservation layer, so that the heat preservation layer is finally invalid, the heat preservation effect can not be achieved, and meanwhile, a large amount of heat (cold) can be taken away by the rainwater to bring huge economic loss to enterprises.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide the joint coating device applied to the prefabricated directly-buried heat-insulation pipeline, which has the advantages of simple operation and good joint coating effect.

The technical aim of the utility model is realized by the following technical scheme: be applied to prefabricated direct burial insulating tube's mending mouth device includes:

the annular sleeve is sleeved on the embedded pipeline;

the electric heating wire is arranged on the inner wall of the annular sleeve;

the electric heating wire filling device comprises an annular sleeve, wherein a filling cavity is formed between the inner wall of the annular sleeve and the outer wall of the embedded pipeline, a filling port communicated with the filling cavity is formed in the outer wall of the annular sleeve, and a power connector electrically connected with the electric heating wire is arranged on the outer wall of the annular sleeve.

In one embodiment, the heating wire is spirally arranged around the axial direction of the embedded pipeline.

In one embodiment, the filler neck is threadably connected to a sealing cap.

In one embodiment, the power connector is a cylindrical dual socket.

In one embodiment, a pressure gauge is connected to the outer wall of the annular sleeve in a threaded manner, and a probe of the pressure gauge is located in the filler cavity.

In one embodiment, a thermometer is connected to the outer wall of the annular sleeve in a threaded manner, and a probe of the thermometer is located in the filler cavity.

Above-mentioned be applied to prefabricated direct burial insulating pipeline's mending mouth device has following beneficial effect:

the operation process of the pre-buried pipeline joint is flow-processed, standardized and normalized, the joint working quality is improved, the joint process operation efficiency is improved, the energy waste is reduced, and the economic benefit of enterprises is improved.

Drawings

Fig. 1 is a schematic structural view of the present embodiment;

FIG. 2 is a front view in section of the present embodiment;

fig. 3 is an enlarged view at a in fig. 2.

In the figure: 1. an annular sleeve; 2. pre-burying a pipe; 3. heating wires; 4. a filler cavity; 5. a filler port; 6. a power supply connector; 7. sealing cover; 8. a pressure gauge; 9. a thermometer.

Detailed Description

The present utility model will be described in detail below with reference to the accompanying drawings and examples.

In the description of the present utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description of the present utility model, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" is at least two unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

The joint coating device applied to the prefabricated directly-buried heat-insulation pipeline comprises an annular sleeve 1 and an electric heating wire 3, wherein the annular sleeve 1 is sleeved on an embedded pipe 2, the electric heating wire 3 is arranged on the inner wall of the annular sleeve 1, and the annular sleeve 1 and the embedded pipe 2 are made of polyurethane materials;

wherein, form the packing chamber 4 between the inner wall of annular cover 1 and the outer wall of pre-buried pipe 2, set up on the outer wall of annular cover 1 with packing mouth 5 of packing chamber 4 intercommunication, be equipped with on the outer wall of annular cover 1 with heating wire 3 electricity be connected power connection 6.

Before two pre-buried pipes 2 are connected, firstly, the annular sleeve 1 is sleeved on one of the pre-buried pipes 2, after the connection of the two pre-buried pipes 2 is completed, the annular sleeve 1 is moved to the connection position of the two pre-buried pipes 2, a power supply is used for communicating with a power connector 6, the electric heating wire 3 is used for supplying power, the electric heating wire 3 melts the contact position of the annular sleeve 1 and the pre-buried pipes 2, the connection between the annular sleeve 1 and the pre-buried pipes 2 is tighter, the tightness of a filling cavity 4 is improved, and polyurethane filling used for filling is filled into the filling cavity 4 through a filling opening 5 after the sealing of the filling cavity 4 is completed.

Preferably, as shown in fig. 3, the heating wire 3 is spirally arranged around the axial direction of the embedded pipe 2, so that the melting effect of the annular sleeve 1 and the embedded pipe 2 is improved.

Wherein, the heating wire 3 adopts a resistance wire, and the power connector 6 is a cylindrical double-plug connector.

Further, the packing port 5 is in threaded connection with a sealing cover 7, so that the sealing effect of the packing cavity 4 is further improved.

Further, the outer wall of the annular sleeve 1 is connected with a pressure gauge 8 in a threaded manner, and a probe of the pressure gauge 8 is positioned in the packing cavity 4. For observing the pressure in the packing cavity 4.

Further, the outer wall of the annular sleeve 1 is connected with a thermometer 9 in a threaded mode, and a probe of the thermometer 9 is located in the packing cavity 4. For observing the temperature inside the stuffing box 4.

The foregoing examples illustrate only a few embodiments of the utility model and are described in detail herein without thereby limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. Be applied to prefabricated direct buries insulating tube's mending mouth device, a serial communication port includes:

the annular sleeve is sleeved on the embedded pipeline;

the electric heating wire is arranged on the inner wall of the annular sleeve;

2. The joint coating device applied to prefabricated directly-buried heat insulation pipelines according to claim 1, wherein: the heating wire is spirally arranged around the axis direction of the embedded pipeline.

3. The joint coating device applied to prefabricated directly-buried heat insulation pipelines according to claim 1, wherein: the filler port is in threaded connection with a sealing cover.

4. The joint coating device applied to prefabricated directly-buried heat insulation pipelines according to claim 1, wherein: the power connector is a cylindrical double-plug connector.

5. The joint coating device applied to prefabricated directly-buried heat insulation pipelines according to claim 1, wherein: the outer wall of the annular sleeve is connected with a pressure gauge in a threaded manner, and a probe of the pressure gauge is positioned in the filling cavity.

6. The joint coating device applied to prefabricated directly-buried heat insulation pipelines according to claim 1, wherein: the outer wall of the annular sleeve is connected with a thermometer in a threaded manner, and a probe of the thermometer is positioned in the filling cavity.