CN212131570U

CN212131570U - Pressure-resistant PE-RT II heating pipe

Info

Publication number: CN212131570U
Application number: CN202020102356.7U
Authority: CN
Inventors: 谷红强; 张占国; 白胜国; 杨世良
Original assignee: Hebei Fangsheng Plastics Industry Co ltd
Current assignee: Hebei Fangsheng Plastics Industry Co ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-12-11
Anticipated expiration: 2030-01-17

Abstract

The utility model relates to a PE-RT II heating pipe technical field especially relates to a withstand voltage type PE-RT II heating pipe. Comprises a circular tube-shaped working tube, wherein a heat-insulating layer is arranged outside the working tube, and a support body is arranged in the heat-insulating layer; the supporting body comprises an outer ring and an inner ring which are in a circular tube shape, the outer ring is positioned outside the inner ring and is coaxial with the inner ring, a support is arranged between the outer ring and the inner ring, and the spaces among the outer ring, the inner ring and the support are filled with heat insulation layers; an outer protecting pipe is arranged outside the heat-insulating layer; the inner diameter of the inner ring is equal to the outer diameter of the working pipe, and the outer diameter of the outer ring is equal to the inner diameter of the outer protecting pipe. The heat-insulating layer enables the heat-supplying pipe to have good heat-insulating performance, the supporting body can bear most of external pressure, the heat-supplying pipe is prevented from being damaged due to overlarge external pressure, the tensioning effect on the working pipe can also be achieved, and the working pipe can bear larger working pressure; the heat preservation layer is arranged in the supporting body, so that heat is prevented from being dissipated to the outside from the supporting body. The pressure-resistant PE-RT II heat supply pipe is used for laying a heat supply pipeline.

Description

Pressure-resistant PE-RT II heating pipe

Technical Field

The utility model relates to a PE-RT II heating pipe technical field especially relates to a withstand voltage type PE-RT II heating pipe.

Background

PE-RT II pipe is a polyolefin family thermoplastic. The PE-RT II pipe which is applied more at present is formed by copolymerizing high-density polyethylene and hexene, has excellent long-term hydrostatic strength without crosslinking, has impact resistance, cracking resistance and scratch resistance, has good high-temperature resistance, and is very suitable for heat supply pipelines. At present, a direct burial scheme is generally adopted for the PE-RT II heat supply pipe during construction, the scheme has the characteristics of small occupied area and high construction speed, but the heat supply pipe bears higher pressure under the scheme, and the heat supply pipe can be damaged due to overlarge pressure under certain occasions.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a pressure-resistant PE-RT II heating pipe aiming at the technical defects, which is characterized in that a heat preservation layer is arranged between a working pipe and an outer protecting pipe, a supporting body made of stainless steel is arranged in the heat preservation layer, the outer diameter of the supporting body is the same as the inner diameter of the outer protecting pipe, the inner diameter of the supporting body is the same as the outer diameter of the working pipe, the supporting body can bear most external pressure, and can also play a role in tensioning the working pipe, so that the working pipe can bear higher working pressure; the heat preservation layer is arranged in the support body to prevent heat from being dissipated to the outside from the support body.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a pressure-resistant PE-RT II heating pipe comprises a working pipe, wherein the working pipe is in a round pipe shape, a heat insulation layer is arranged outside the working pipe, and a support body is arranged in the heat insulation layer; the supporting body comprises an outer ring and an inner ring which are in a circular tube shape, the outer ring is positioned outside the inner ring and is coaxial with the inner ring, a support is arranged between the outer ring and the inner ring, and heat insulation layers are filled in spaces among the outer ring, the inner ring and the support; the length of the support body is 1/4 of the outer diameter of the support body, and the distance between two adjacent support bodies is 0.8-1.2 times of the length of the support body; an outer protecting pipe is arranged outside the heat-insulating layer; the inner diameter of the inner ring is equal to the outer diameter of the working pipe, and the outer diameter of the outer ring is equal to the inner diameter of the outer protecting pipe.

Further optimizing the technical scheme, the material of the working pipe is PE-RT II.

Further optimizing the technical scheme, the heat-insulating layer is made of polyurethane foam plastic.

Further optimize this technical scheme, the material of support is stainless steel.

Further optimize this technical scheme, the support comprises eight cylindric pillars, two the V-arrangement frame is constituteed to the pillar, and four V-arrangement frames are constituteed to eight pillars, the summit of four V-arrangement frames combines in a point, four V-arrangements are respectively with the both ends of two limit connection inner circle and outer lane.

Further optimize this technical scheme, the material of outer pillar is high density polyethylene.

Compared with the prior art, the utility model has the advantages of it is following: 1. the heat insulation layer is arranged between the working pipe and the outer protection pipe, the support body made of stainless steel is arranged in the heat insulation layer, the outer diameter of the support body is the same as the inner diameter of the outer protection pipe, the inner diameter of the support body is the same as the outer diameter of the working pipe, the support body can bear most of external pressure and can also play a role in tensioning the working pipe, and the working pipe can bear higher working pressure; 2. the heat preservation layer is arranged in the support body, so that heat is prevented from being dissipated to the outside from the support body, and the reduction of the heat insulation performance of the pipe is avoided.

Drawings

FIG. 1 is a schematic structural diagram of a pressure-resistant PE-RT II heating pipe.

FIG. 2 is a schematic view of a support structure of a pressure-resistant PE-RT II heating pipe.

In the figure: 1. an outer protecting pipe; 2. a heat-insulating layer; 3. a support body; 31. an outer ring; 32. an inner ring; 33. a support; 331. a pillar; 4. and a working pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The specific implementation mode is as follows: referring to fig. 1-2, a pressure-resistant PE-RT ii heating pipe comprises a working pipe 4, wherein the working pipe 4 is in a circular pipe shape, an insulating layer 2 is disposed outside the working pipe 4, and a support body 3 is disposed in the insulating layer 2; the support body 3 comprises an outer ring 31 and an inner ring 32 which are in a circular tube shape, the outer ring 31 is positioned outside the inner ring 32 and is coaxial with the inner ring 32, a bracket 33 is arranged between the outer ring 31 and the inner ring 32, and the space among the outer ring 31, the inner ring 32 and the bracket 33 is filled with the heat-insulating layer 2; the length of the support body 3 is 1/4 of the outer diameter thereof, and the distance between two adjacent support bodies 3 is 0.8-1.2 times of the length of the support body 3; an outer protecting pipe 1 is arranged outside the heat-insulating layer 2; the inner diameter of the inner ring 32 is equal to the outer diameter of the working pipe 4, and the outer diameter of the outer ring 31 is equal to the inner diameter of the outer protecting pipe 1.

The working pipe 4 is made of PE-RT II and has very good heat resistance.

The heat preservation layer 2 is made of polyurethane foam plastic, has good heat preservation and heat insulation performance, and has certain viscosity, so that the working pipe 4, the support body 3, the outer protective pipe 1 and the heat preservation layer form a firm whole.

The bracket 33 is made of stainless steel, has good strength and cannot be corroded after long-term use.

The support 33 comprises eight cylindric pillars 331, two the V-arrangement is constituteed to pillar 331, the summit of four V-arrangements combines in a point, four V-arrangements are respectively with the both ends of two limits connection inner circle 32 and outer lane 31, and the stability of this kind of structure is better, and the atress is more balanced, and inside has formed a large amount of spaces simultaneously and has held the insulation material of heat preservation 2 to make supporter 3 obtain good thermal insulation performance.

The outer protecting pipe 1 is made of high-density polyethylene and has high mechanical strength and good corrosion resistance.

The working principle is as follows: step one, as shown in fig. 1-2, the interior of the working pipe 4 is used for conveying hot fluid, and the PE-RT II heat supply pipe has high heat resistance, so that the PE-RT II heat supply pipe can stably work for a long time at the temperature of 95 ℃; the heat-insulating layer 2 filled between the working pipe 4 and the outer protecting pipe 1 ensures that the heat-supplying pipe has good heat-insulating property, and greatly reduces the heat loss to the outside; the external diameter of supporter 3 is the same with the internal diameter of

outer pillar

1, and 3 internal diameters of supporter are the same with the external diameter of working pipe 4, and external pressure is mostly born by supporter 3, has prevented this heating pipe from being crushed, and supporter 3 also can play the tensioning effect to working pipe 4 simultaneously, can make working pipe 4 bear bigger operating pressure.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. A withstand voltage type PE-RT II heating pipe which characterized in that: the heat-insulation pipe comprises a working pipe (4), wherein the working pipe (4) is in a circular pipe shape, a heat-insulation layer (2) is arranged outside the working pipe (4), and a support body (3) is arranged in the heat-insulation layer (2); the supporting body (3) comprises an outer ring (31) and an inner ring (32) which are in a circular tube shape, the outer ring (31) is positioned outside the inner ring (32) and is coaxial with the inner ring (32), a support (33) is arranged between the outer ring (31) and the inner ring (32), and the space among the outer ring (31), the inner ring (32) and the support (33) is filled with a heat-insulating layer (2); the length of the support body (3) is 1/4 of the outer diameter of the support body, and the distance between two adjacent support bodies (3) is 0.8-1.2 times of the length of the support body (3); an outer protecting pipe (1) is arranged outside the heat-insulating layer (2); the inner diameter of the inner ring (32) is equal to the outer diameter of the working pipe (4), and the outer diameter of the outer ring (31) is equal to the inner diameter of the outer protecting pipe (1).

2. The pressure-resistant PE-RT II heating pipeline according to claim 1, characterized in that: the material of the working pipe (4) is PE-RT II.

3. The pressure-resistant PE-RT II heating pipeline according to claim 1, characterized in that: the heat-insulating layer (2) is made of polyurethane foam plastic.

4. The pressure-resistant PE-RT II heating pipeline according to claim 1, characterized in that: the bracket (33) is made of stainless steel.

5. The pressure-resistant PE-RT II heating pipeline according to claim 1, characterized in that: support (33) comprise eight cylindric pillars (331), two V-arrangement frame is constituteed in pillar (331), and four V-arrangement frames are constituteed in eight pillars (331), the summit of four V-arrangement frames combines in a point, four V-arrangements are respectively with the both ends of two limit connection inner circle (32) and outer lane (31).

6. The pressure-resistant PE-RT II heating pipeline according to claim 1, characterized in that: the outer protecting pipe (1) is made of high-density polyethylene.