CN216896192U

CN216896192U - Double-layer heat-preservation PP pipe

Info

Publication number: CN216896192U
Application number: CN202122358732.6U
Authority: CN
Inventors: 张志良; 李晓华
Original assignee: Shanxi Tianqin Plastic Pipe Co ltd
Current assignee: Shanxi Tianqin Plastic Pipe Co ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-07-05
Anticipated expiration: 2031-09-28

Abstract

The utility model discloses a double-layer heat-preservation pp pipe, which comprises a pipe body and a partition, wherein the partition is arranged on the pipe body in an array manner, the pipe body sequentially comprises a pp inner layer, a vacuum heat-preservation layer, a foaming material heat-preservation layer and a protection outer layer from inside to outside, the pp inner layer is arranged on the inner side of the pipe body and is vertical to the partition, the vacuum heat-preservation layer is arranged outside the pp inner layer and is arranged between the partitions, the vacuum heat-preservation layer is in sealing contact with the partition, the foaming material heat-preservation layer is arranged outside the vacuum heat-preservation layer and is vertical to the partition, the protection outer layer is arranged outside the foaming material protection layer and is vertical to the partition. The utility model belongs to the technical field of pipes, and particularly relates to a double-layer heat-preservation pp pipe which is good in heat preservation effect, strong in low-temperature resistance, not easy to age, capable of protecting wear-resistant protrusions on an outer layer, enhancing the wear resistance of the pipe and improving the strength of the pipe.

Description

Double-layer heat-preservation PP pipe

Technical Field

The utility model belongs to the technical field of pipes, and particularly relates to a double-layer heat-preservation pp pipe.

Background

Polypropylene (PP) pipeline systems have the advantages of light weight, corrosion resistance, long service life, convenience in installation, reliability in connection and the like, and are widely applied to building materials. Particularly in the field of cold and hot water conveying, the consumption of PP pipes is the first, the total consumption accounts for about 50% of all plastic pipes for cold and hot water conveying, but when the PP pipes are used for a hot water pipeline for a long time, particularly under the conditions of longer pipelines and larger temperature difference, the PP pipes still have larger heat loss, and on the other hand, the PP pipes have the defects of poor low temperature resistance, lower hardness, large molding shrinkage rate and easy aging under the action of heat, oxygen and light.

Therefore, the development of the PP pipe which has a good heat preservation effect, strong low temperature resistance and is not easy to age is an urgent problem to be solved at present and is also a development direction of the PP pipe in the future.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides the double-layer heat-insulation pp pipe which is small in heat loss in the conveying process, good in heat-insulation effect, strong in low temperature resistance, strong in pressure-bearing capacity and not easy to age under the action of light.

The technical scheme adopted by the utility model is as follows: this scheme double-deck heat preservation pp tubular product, includes the body and cuts off, cut off the array and locate on the body, the body includes pp inlayer, vacuum heat preservation, expanded material heat preservation and protection skin from inside to outside in proper order, the inboard of body is located to the pp inlayer, the pp inlayer is perpendicular with cutting off, the pp inlayer is located outside the vacuum heat preservation, the vacuum heat preservation is located and is cut off between, vacuum heat preservation and the sealed contact of wall, the expanded material heat preservation is located outside the vacuum heat preservation, the expanded material heat preservation is perpendicular with cutting off, the expanded material protection skin is located outside the expanded material protection layer, the protection skin is perpendicular with cutting off.

Furthermore, a reinforcing rib is arranged in the vacuum heat-insulating layer and connected with the pp inner layer and the foam material heat-insulating layer, and the reinforcing rib plays a role in fixing and supporting.

Additionally, wear-resistant protrusions are arranged on the protective outer layer, and the wear resistance and strength of the wear-resistant protrusions are enhanced.

Preferably, the thickness of the partition is 5-10 mm, and the partition plays a role in sealing the vacuum heat-insulating layer.

In order to obtain a better heat preservation effect, the thickness of the vacuum heat preservation layer is 4-10 mm, and the vacuum heat preservation layer reduces heat transfer, so that heat loss is reduced, and the heat preservation performance is enhanced.

The thickness of the foam material heat-insulating layer is 15-25 mm, the foam material filled in the foam material heat-insulating layer is obtained by taking polypropylene as a raw material and adding auxiliary materials such as a catalyst, a foam stabilizer, a foaming agent and the like through cross-linking foaming, and the foam material heat-insulating layer plays a heat-insulating role on one hand and also plays a buffering role on the other hand, so that the impact force received by the pipe is reduced.

In addition, the outer thickness of protection is 5 ~ 15mm, the outer material of protection is the pp material that has added carbon black, adds carbon black and can restrict the ultraviolet ray and penetrate the pipeline, prevents that the pp inlayer from ageing.

The utility model with the structure has the following beneficial effects: this scheme double-deck heat preservation pp tubular product, through setting up the double-deck heat preservation of vacuum insulation layer and expanded material protective layer, reduced the heat transfer among the hot and cold water transportation process, greatly promoted the heat preservation effect, the expanded material protective layer can also reduce the impact simultaneously, has increased the low temperature resistance of tubular product, and the protection skin can completely cut off the light including ultraviolet ray, prevents that the pp inlayer from being illuminated ageing, and the wear resistance of tubular product has been strengthened to the wear-resisting arch on the protection skin, has improved the intensity of tubular product.

Drawings

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

fig. 2 is a cross-sectional view of the present invention.

The heat-insulation pipe comprises a pipe body 1, a partition 2, a PP inner layer 3, a vacuum heat-insulation layer 4, a foam material heat-insulation layer 5, a protection outer layer 6, a reinforcing rib 7 and a wear-resistant bulge 8.

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and 2, this scheme a double-deck heat preservation pp tubular product, including body 1 and wall 2, it locates on body 1 to cut off 2 arrays, body 1 includes pp inlayer 3 from inside to outside in proper order, vacuum heat preservation 4, expanded material heat preservation 5 and protection skin 6, pp inlayer 3 locates the inboard of body 1, pp inlayer 3 is perpendicular with cutting off 2, vacuum heat preservation 4 is located outside pp inlayer 3, vacuum heat preservation 4 is located and is cut off between 2, vacuum heat preservation 4 with cut off 2 sealing contact, expanded material heat preservation 5 is located outside vacuum heat preservation 4, expanded material heat preservation 5 is perpendicular with cutting off 2, expanded material protection skin 6 is located outside expanded material protection layer 5, protect skin 6 and cut off 2 perpendicularly.

As shown in figure 2, the vacuum heat-insulating layer 4 is internally provided with a reinforcing rib 7, the reinforcing rib 7 is connected with the pp inner layer 3 and the foaming material heat-insulating layer 5, and the reinforcing rib 7 plays a role in fixing and supporting.

The protective outer layer 6 is provided with wear-resistant protrusions 8, and the wear resistance and strength of the wear-resistant protrusions 8 are enhanced.

The thickness of the partition 2 is 5-10 mm, and the partition 2 plays a role in sealing the vacuum heat-insulating layer.

The thickness of the vacuum heat-insulating layer 4 is 4-10 mm, and the vacuum heat-insulating layer 4 reduces heat transfer, thereby reducing heat loss and enhancing heat-insulating performance.

The thickness of the foam material heat-insulating layer 5 is 15-25 mm, the foam material filled in the foam material heat-insulating layer 5 is obtained by taking polypropylene as a raw material and adding auxiliary materials such as a catalyst, a foam stabilizer, a foaming agent and the like through cross-linking foaming, and the foam material heat-insulating layer 5 plays a heat-insulating role on one hand and also plays a buffering role on the other hand, so that the impact force received by the pipe is reduced.

The thickness of outer 6 of protection is 5 ~ 15mm, and the pp material of outer 6 of protection for having added carbon black adds carbon black and can restrict the ultraviolet ray and pierce through the pipeline, prevents that pp inlayer 3 from ageing.

When the heat preservation device is used specifically, in the cold and hot water conveying process, the pp inner layer 3 is in contact with cold and hot water, the vacuum heat preservation layer 4 is vacuum except the reinforcing ribs 7, the vacuum heat preservation layer is not capable of transferring heat in vacuum, the heat transfer efficiency is low, the heat loss is small, the partition 2 enables the vacuum heat preservation layer 4 to keep sealed and enables maintenance to be more convenient, the foaming material heat preservation layer 5 is arranged outside the vacuum heat preservation layer 4, the heat transfer efficiency is further reduced, the self heat transfer performance of the foaming material is low, a large amount of air is contained in foam, the movement of the air is seriously hindered, the air and the convection heat conduction function formed by preventing the circulation of the air through micropores in the foam material can play a good heat preservation effect, the heat loss in the cold and hot water conveying process is small, the heat preservation effect is good, and the outer layer 6 is protected to enable light not to penetrate through, prevent that pp inlayer 3 from ageing under the irradiation of ultraviolet ray, prolong its life, wear-resisting arch 8 on the protection skin 6 has improved the wearability and the intensity of whole double-deck heat preservation pp tubular product, is the use flow of whole double-deck heat preservation pp tubular product more than just.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A double-layer heat preservation pp tubular product which characterized in that: including body and wall, cut off the array and locate on the body, the body includes pp inlayer, vacuum heat preservation, expanded material heat preservation and protection skin from inside to outside in proper order, the inboard of body is located to the pp inlayer, the pp inlayer is perpendicular with cutting off, the vacuum heat preservation is located outside the pp inlayer, the vacuum heat preservation is located and is cut off between, vacuum heat preservation and wall sealing contact, the expanded material heat preservation is located outside the vacuum heat preservation, the expanded material heat preservation is perpendicular with cutting off, the expanded material protection layer is located to the protection skin outward, the protection skin is perpendicular with cutting off.

2. The double-layer insulation pp pipe material of claim 1, wherein: and a reinforcing rib is arranged in the vacuum heat-insulating layer and is connected with the pp inner layer and the foaming material heat-insulating layer.

3. The double-layer insulation pp pipe as claimed in claim 2, wherein: and wear-resistant bulges are arranged on the outer protective layer.

4. The double-layer insulation pp pipe material of claim 3, wherein: the thickness of the partition is 5-10 mm.

5. The double-layer insulation pp pipe as recited in claim 4, wherein: the thickness of the vacuum heat-insulating layer is 4-10 mm.

6. The double-layer insulation pp pipe as claimed in claim 5, wherein: the thickness of the foam material heat-insulating layer is 15-25 mm, and the foam material filled in the foam material heat-insulating layer takes polypropylene as a raw material.

7. The double-layer insulation pp pipe as recited in claim 6, wherein: the thickness of the outer layer of protection is 5 ~ 15mm, the outer material of protection is the pp material that has added carbon black.