Novel polyurethane thermal insulation pipe

Abstract

The utility model relates to the technical field of polyurethane thermal insulation pipes and discloses a novel polyurethane thermal insulation pipe which comprises a pipe body, an inner seamless steel pipe layer is arranged on the inner wall of the pipe body, a first polyurethane thermal insulation layer is arranged on the outer side of the inner seamless steel pipe layer, and a filling layer is arranged on the outer side of the first polyurethane thermal insulation layer. A second polyurethane heat preservation layer is arranged on the outer side of the filling layer, an outer protection layer is arranged on the surface of the pipeline body, a reinforcing layer is arranged on the inner side of the outer protection layer, a vacuum layer is arranged between the reinforcing layer and the second polyurethane heat preservation layer, and supporting columns are arranged in the vacuum layer. Through cooperative arrangement of the inner seamless steel pipe layer, the first polyurethane heat preservation layer, the filling layer, the second polyurethane heat preservation layer, the vacuum layer, the supporting columns, the reinforcing layer, the outer protection layer, the glass fiber winding layer and the high-density polyethylene layer, the heat preservation effect of the polyurethane heat preservation pipe can be improved, meanwhile, the pressure resistance of the polyurethane heat preservation pipe is improved, the pipeline is protected, and the service life of the pipeline is prolonged. The service life of the pipeline is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to polyurethane heat preservation pipe technical field, specifically to a novel polyurethane heat preservation pipe. BACKGROUND

[0002] Polyurethane heat preservation pipe is widely used in chemical petroleum pipeline, central heating heat network, air conditioning supply and return water pipeline, municipal engineering pipeline, building heating pipeline and other fields. Its efficient heat preservation performance and simple construction characteristics make it become indispensable material in these fields, in the prior art: "a heat preservation polyurethane heat preservation pipe (publication number: CN219866936U), including pipe body, be equipped with heat preservation structure on the pipe body, heat preservation structure contains: polyurethane heat preservation layer, first heat preservation layer, filling layer, second heat preservation layer, sound insulation layer, outer protection pipe and fixed assembly, the polyurethane heat preservation layer is wrapped on the pipe body outer wall surface, the first heat preservation layer is wrapped on the polyurethane heat preservation layer outer wall surface, the filling layer is wrapped on the first heat preservation layer outer wall surface, the case mainly adopts heat preservation structure, through polyurethane heat preservation layer, aluminium silicate first heat preservation layer and foam second heat preservation layer three heat preservation layers, the medium transported in the pipe body is heat preserved, the heat preservation effect is excellent, and adopts fixed assembly, if the pipe body needs to be fixed, can be fixed through a plurality of fixed holes on the fixed sheet, simple structure, practicality is strong", but there are still some defects in the use process, the existing heat preservation pipeline lacks effective compression resistance, which can easily cause damage in daily use and reduce the service life of the heat preservation pipeline. CONTENT

[0003] (I) technical problem solved

[0004] The utility model discloses to the prior art's insufficient, the utility model provides a novel polyurethane heat preservation pipe, possesses can improve the heat preservation effect of polyurethane heat preservation pipe, improves the compression resistance of polyurethane heat preservation pipe simultaneously, protects the pipeline, improves the service life of the pipeline's advantage, solves the problem raised in the above background art.

[0005] (II) technical scheme

[0006] In order to achieve the above object, the following technical scheme is provided: a novel polyurethane heat preservation pipe, including pipeline main part, the inner wall of pipeline main part is provided with inner seamless steel pipe layer, the outer side of inner seamless steel pipe layer is provided with first polyurethane heat preservation layer, the outer side of first polyurethane heat preservation layer is provided with filling layer, the outer side of filling layer is provided with second polyurethane heat preservation layer, the surface of pipeline main part is provided with outer protective layer, the inner side of outer protective layer is provided with reinforcing layer, the vacuum layer is arranged between reinforcing layer and second polyurethane heat preservation layer, and the inside of vacuum layer is provided with support column.

[0007] Preferably, the support columns are arranged in the interior of the vacuum layer, and the support columns are connected with the second polyurethane insulation layer and the reinforcing layer respectively.

[0008] Preferably, the outer protective layer comprises a glass fiber winding layer and a high-density polyethylene layer, the surface of the pipeline body is the high-density polyethylene layer, the inner side of the high-density polyethylene layer is provided with the glass fiber winding layer, and the glass fiber winding layer is connected with the reinforcing layer.

[0009] Preferably, the front end of the pipeline body is fixedly provided with a first mounting flange, the front surface of the first mounting flange is provided with a mounting groove, and the front surface of the first mounting flange is fixedly provided with a mounting threaded cylinder.

[0010] Preferably, the rear end of the pipeline body is fixedly provided with a second mounting flange, the back surface of the second mounting flange is fixedly provided with a mounting threaded sleeve, and the inner wall of the mounting threaded sleeve is provided with a second sealing gasket.

[0011] (Three) beneficial effects

[0012] Compared with the prior art, the novel polyurethane insulation pipe has the following advantages

[0013] Beneficial effects:

[0014] 1. The novel polyurethane insulation pipe is provided with an inner seamless steel pipe layer, a first polyurethane insulation layer, a filling layer, a second polyurethane insulation layer, a vacuum layer, a support column, a reinforcing layer, an outer protective layer, a glass fiber winding layer and a high-density polyethylene layer, so that the heat preservation effect of the polyurethane insulation pipe is improved, the compression resistance of the polyurethane insulation pipe is improved, the pipeline is protected, and the service life of the pipeline is improved.

[0015] 2. The novel polyurethane insulation pipe is provided with a first mounting flange, a first sealing gasket, a mounting threaded cylinder, a second mounting flange, a mounting threaded sleeve, a second sealing gasket and a mounting groove, so that the pipeline body is simple and fast to install. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front end structure schematic view of the utility model;

[0017] Figure 2 It is a rear end structure schematic view of the utility model;

[0018] Figure 3 It is a pipeline body cross section structure schematic view of the utility model;

[0019] Figure 4 It is an outer protective layer cross section structure schematic view of the utility model.

[0020] In the figure: 1, pipeline main body; 2, inner seamless steel pipe layer; 3, first polyurethane insulation layer; 4, filling layer; 5, second polyurethane insulation layer; 6, vacuum layer; 7, support column; 8, reinforcing layer; 9, outer protective layer; 10, glass fiber winding layer; 11, high-density polyethylene layer; 12, first mounting flange; 13, first sealing gasket; 14, mounting threaded cylinder; 15, second mounting flange; 16, mounting threaded sleeve; 17, second sealing gasket; 18, mounting groove. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments. Obviously, the described embodiments are only part of the embodiments, not all the embodiments. Based on the embodiments, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope.

[0022] Embodiment 1:

[0023] Please refer to Figures 1-3 A novel polyurethane insulation pipe, comprising a pipeline main body 1, the inner wall of the pipeline main body 1 is provided with an inner seamless steel pipe layer 2, the outer side of the inner seamless steel pipe layer 2 is provided with a first polyurethane insulation layer 3, the outer side of the first polyurethane insulation layer 3 is provided with a filling layer 4, the outer side of the filling layer 4 is provided with a second polyurethane insulation layer 5, the surface of the pipeline main body 1 is provided with an outer protective layer 9, the inner side of the outer protective layer 9 is provided with a reinforcing layer 8, a vacuum layer 6 is arranged between the reinforcing layer 8 and the second polyurethane insulation layer 5, and the inside of the vacuum layer 6 is provided with a support column 7.

[0024] Specifically, the inner seamless steel pipe layer 2 has higher strength and pressure resistance, can support the outer steel pipe main body, and then the filling layer 4 is filled with polyurethane foam, which has the effect of heat preservation and sound insulation, the support plate is made of elastic rubber material, the support plate supports a space, and then the internal gas is extracted to form a vacuum layer 6.

[0025] Preferably, the support columns 7 are arranged in the inside of the vacuum layer 6, and the support columns 7 are connected with the second polyurethane insulation layer 5 and the reinforcing layer 8 respectively.

[0026] Specifically, the support plate has elasticity, can improve the pressure resistance of the pipeline, and can protect the first polyurethane insulation layer 3, the second polyurethane insulation layer 5 and the inner seamless steel pipe layer 2.

[0027] Preferably, the outer protective layer 9 comprises a glass fiber winding layer 10 and a high-density polyethylene layer 11, the surface of the pipeline main body 1 is the high-density polyethylene layer 11, the inner side of the high-density polyethylene layer 11 is provided with the glass fiber winding layer 10, and the glass fiber winding layer 10 is connected with the reinforcing layer 8.

[0028] Specifically, the layer reinforcing layer 8 is a basalt fiber layer, and the basalt fiber layer and the glass fiber winding layer 10 have good compression resistance, and the high-density polyethylene layer 11 has good corrosion resistance and can protect the polyurethane insulation pipe.

[0029] Working principle: The first polyurethane insulation layer 3 and the second polyurethane insulation layer 5 are provided to provide a layer of insulation effect, and the vacuum layer 6 utilizes the extremely low thermal conductivity of the vacuum environment to effectively prevent heat conduction, thereby improving the insulation performance of the insulation pipe and forming a second layer of insulation effect. The artificial filling layer 4 is filled with polyurethane foam to further improve the insulation and sound insulation effect. The basalt fiber layer, the glass fiber winding layer 10, and the support column 7 arranged in the vacuum layer 6 make the pipeline have good compression resistance, and the high-density polyethylene layer 11 has good corrosion resistance, thereby improving the insulation effect of the polyurethane insulation pipe and improving the compression resistance of the polyurethane insulation pipe. The pipeline is protected, and the service life of the pipeline is improved.

[0030] Example 2:

[0031] Please refer to Figures 1-4 The front end of the pipeline body 1 is fixedly installed with a first installation flange 12, the front surface of the first installation flange 12 is provided with an installation groove 18, and the front surface of the first installation flange 12 is fixedly installed with an installation threaded cylinder 14. The inner wall of the installation groove 18 is provided with a first sealing gasket 13.

[0032] Specifically, the outer side of the installation threaded cylinder 14 is threaded,

[0033] Preferably, the rear end of the pipeline body 1 is fixedly installed with a second installation flange 15, the back surface of the second installation flange 15 is fixedly installed with an installation threaded sleeve 16, and the inner wall of the installation threaded sleeve 16 is installed with a second sealing gasket 17.

[0034] Specifically, the inner side of the installation threaded sleeve 16 is threaded, and the threads of the installation threaded cylinder 14 and the installation threaded sleeve 16 are adapted to each other.

[0035] Specifically, when two pipeline bodies 1 are installed, the first installation flange 12 at the front end of the first pipeline body 1 and the second installation flange 15 at the rear end of the second pipeline body 1 are correspondingly installed. The installation threaded sleeve 16 is installed into the installation groove 18, and then rotated. The installation threaded sleeve 16 is fixedly installed on the installation threaded cylinder 14. During installation, the first sealing gasket 13 and the second sealing gasket 17 are extruded and deformed to tightly adhere to the installation surface, forming a double-layer seal, thereby making the installation of the pipeline body 1 simple and fast.

[0036] Although the embodiments of the utility model have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit thereof, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A new type of polyurethane insulated pipe comprising a pipe body (1), characterized in that: The inner wall of the pipeline body (1) is provided with an inner seamless steel pipe layer (2), the outer side of the inner seamless steel pipe layer (2) is provided with a first polyurethane insulation layer (3), the outer side of the first polyurethane insulation layer (3) is provided with a filling layer (4), the outer side of the filling layer (4) is provided with a second polyurethane insulation layer (5), the surface of the pipeline body (1) is provided with an outer protective layer (9), the inner side of the outer protective layer (9) is provided with a reinforcing layer (8), a vacuum layer (6) is arranged between the reinforcing layer (8) and the second polyurethane insulation layer (5), and the inside of the vacuum layer (6) is provided with a support column (7).

2. A new type of polyurethane thermal insulation pipe according to claim 1, characterized by: The support columns (7) are arranged in the inside of the vacuum layer (6), and the support columns (7) are connected with the second polyurethane insulation layer (5) and the reinforcing layer (8) respectively.

3. A new type of polyurethane thermal insulation pipe according to claim 1, characterized by: The outer protective layer (9) comprises a glass fiber winding layer (10) and a high-density polyethylene layer (11), the surface of the pipeline body (1) is the high-density polyethylene layer (11), the inner side of the high-density polyethylene layer (11) is provided with the glass fiber winding layer (10), and the glass fiber winding layer (10) is connected with the reinforcing layer (8).

4. A new type of polyurethane thermal insulation pipe according to claim 1, characterized by: A first mounting flange (12) is fixedly installed at the front end of the pipeline body (1), a mounting groove (18) is formed in the front surface of the first mounting flange (12), a mounting threaded cylinder (14) is fixedly installed on the front surface of the first mounting flange (12), and a first sealing gasket (13) is arranged on the inner wall of the mounting groove (18).

5. A new type of polyurethane thermal insulation pipe according to claim 1, characterized by: A second mounting flange (15) is fixedly installed at the rear end of the pipeline body (1), a mounting threaded sleeve (16) is fixedly installed on the back surface of the second mounting flange (15), and a second sealing gasket (17) is arranged on the inner wall of the mounting threaded sleeve (16).

Images