Soft and hard combined prefabricated steam overhead thermal insulation pipe

Abstract

The utility model discloses a rigid-flex prefabricated steam overhead thermal insulation pipe which comprises an inner layer steel pipe, a middle layer and an outer protective pipe, the middle layer sequentially comprises a thermal insulation layer, a first reinforcing layer, a buffer layer and a second reinforcing layer from inside to outside, and a plurality of evenly-distributed annular reinforcing plates are embedded in the first reinforcing layer and the second reinforcing layer. The multiple annular reinforcing plates are provided with circular holes distributed in an annular array mode, and thin steel wires are arranged in the multiple corresponding circular holes in a penetrating mode. The thermal insulation pipe is reasonable in design and good in practicability, the inner-layer steel pipe can be effectively protected through the first reinforcing layer, the second reinforcing layer and the buffer layer, the compression resistance of the thermal insulation pipe is greatly improved, the tensile property of the thermal insulation pipe is improved through the thin steel wires, and the service life of the thermal insulation pipe is prolonged. And the combined action of the buffer layer, the first reinforcing layer and the second reinforcing layer can be utilized, so that the thermal insulation performance of the thermal insulation pipe is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat-insulating pipes, in particular to a soft-hard combined prefabricated steam overhead heat-insulating pipe. Background Art

[0002] After the steam pipe is installed, it needs to be insulated on site. The insulation structure used is mainly multi-layer soft insulation materials, such as aluminum silicate wool, glass wool, etc. After the insulation construction is completed, the outer surface of the pipe is wrapped with galvanized iron sheets, color steel plates, aluminum sheets, etc. for protection. The existing steam pipes after insulation construction have poor pressure resistance and are easily trampled and damaged during construction or after completion; in addition, there are related problems such as uncontrollable insulation quality, long construction period, high engineering construction difficulty, and environmental protection. The steam pipe after insulation construction needs to be installed and erected on the pipe pier. During the erection, it is necessary to install a support ring on the outside of the steam pipe on the pipe pier, such as the upper and lower half ring support structure. Since the outer protective pipe is mostly made of thinner materials such as galvanized iron sheets and aluminum sheets, the inner contact surface material is a soft insulation material without sufficient compressive strength. Therefore, conventional support rings cannot meet the actual erection requirements and the erection support is unstable.

[0003] In view of the above problems, a soft-hard combined prefabricated steam overhead insulation pipe is disclosed in the Chinese patent announcement with the announcement number CN112431966A, and its technical points are: including an insulation pipe body and a bracket body, the insulation pipe body includes an inner pipe body, a soft cushion layer, an insulation support layer and an outer protective pipe, and the outer side of the inner pipe body is provided with a soft cushion layer, an insulation support layer and an outer protective pipe in sequence from the inside to the outside, and the insulation support layer includes a soft insulation layer and a hard support layer. The present invention has a reasonable and compact structure and is easy to use. By providing a soft insulation layer and a hard support layer, this embodiment has both insulation performance and support performance.

[0004] In actual operation, it was found that the above scheme still has at least the following defects: although the insulation pipe has a certain structural strength, there are multiple weak points between the inner pipe body and the outer protective pipe between two adjacent hard support layers in order to prevent the inner pipe body from directly contacting the hard support layer when it expands due to heat, which makes the compressive strength of the insulation pipe poor. For this reason, we propose a prefabricated steam overhead insulation pipe with a combination of soft and hard to solve the above problems. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a soft-hard combined prefabricated steam overhead insulation pipe, which solves the problem that although the insulation pipe has a certain structural strength, there are multiple weak points between the inner pipe body and the outer protective pipe between two adjacent hard support layers in order to prevent the inner pipe body from directly contacting the hard support layer when it expands due to heat, resulting in poor compressive strength of the insulation pipe.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a prefabricated steam overhead insulation pipe with a combination of soft and hard, comprising an inner steel pipe, an intermediate layer and an outer protective pipe, wherein the intermediate layer is composed of an insulation layer, a first reinforcement layer, a buffer layer and a second reinforcement layer from the inside to the outside.

[0007] Preferably, a plurality of evenly distributed annular reinforcement plates are embedded in the first reinforcement layer and the second reinforcement layer, and circular holes distributed in a circular array are opened on the plurality of annular reinforcement plates, and thin steel wires are passed through the corresponding plurality of circular holes.

[0008] Preferably, the distance between two adjacent annular reinforcement plates in the first reinforcement layer is the same as the distance between two adjacent annular reinforcement plates in the second reinforcement layer.

[0009] Preferably, the annular reinforcement plate in the first reinforcement layer is located in the middle of the two annular reinforcement plates in the corresponding second reinforcement layer.

[0010] Preferably, the thermal insulation layer is made of polyurethane thermal insulation material, the buffer layer is made of aerogel material, the outer protective tube is made of polyethylene material, and the first reinforcement layer and the second reinforcement layer are both made of rubber material.

[0011] The utility model provides a prefabricated steam overhead insulation pipe combining soft and hard elements. It has the following beneficial effects:

[0012] (1) This kind of prefabricated steam overhead insulation pipe with a combination of soft and hard layers can effectively protect the inner steel pipe by utilizing the combined effect of the first reinforcement layer, the second reinforcement layer and the buffer layer, greatly improving the compressive performance of the insulation pipe, and improving the tensile performance of the insulation pipe by utilizing multiple fine steel wires.

[0013] (2) The soft-hard combined prefabricated steam overhead insulation pipe can greatly improve the insulation performance of the insulation pipe by utilizing the combined effect of the buffer layer, the first reinforcement layer and the second reinforcement layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the main view of the utility model;

[0016] Figure 3 It is a schematic diagram of the top view structure of the utility model;

[0017] Figure 4 The three-dimensional structure of the utility model is shown in FIG. Figure 2 .

[0018] In the figure: 1. Inner steel pipe; 2. Insulation layer; 3. First reinforcement layer; 4. Buffer layer; 5. Second reinforcement layer; 6. Outer protective pipe; 7. Annular reinforcement plate; 8. Fine steel wire. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figure 1-4 As shown, the utility model provides a technical solution: a soft-hard combined prefabricated steam overhead insulation pipe, including an inner steel pipe 1, an intermediate layer and an outer protective pipe 6, the intermediate layer is an insulation layer 2, a first reinforcement layer 3, a buffer layer 4 and a second reinforcement layer 5 from the inside to the outside, the insulation layer 2 is a polyurethane insulation material, the buffer layer 4 is an aerogel material, and the outer protective pipe 6 is a polyethylene material.

[0021] In this embodiment, the above-mentioned first reinforcement layer 3 and second reinforcement layer 5 are both made of rubber material, and a plurality of evenly distributed annular reinforcement plates 7 are buried in the first reinforcement layer 3 and the second reinforcement layer 5. The plurality of annular reinforcement plates 7 are provided with circular holes distributed in a circular array, and fine steel wires 8 are passed through the corresponding plurality of circular holes. The spacing between two adjacent annular reinforcement plates 7 in the first reinforcement layer 3 is the same as the spacing between two adjacent annular reinforcement plates 7 in the second reinforcement layer 5. The annular reinforcement plate 7 in the first reinforcement layer 3 is located in the middle position of the two annular reinforcement plates 7 in the corresponding second reinforcement layer 5.

[0022] Through the above structure, the soft and hard combined prefabricated steam overhead insulation pipe provided by the utility model can utilize the first reinforcement layer, the second reinforcement layer and the buffer layer to effectively protect the inner steel pipe, greatly improve the compressive performance of the insulation pipe, and improve the tensile performance of the insulation pipe by utilizing multiple fine steel wires. It can also utilize the combined effect of the buffer layer, the first reinforcement layer and the second reinforcement layer to greatly improve the insulation performance of the insulation pipe.

[0023] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope recorded in the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A prefabricated steam overhead insulation pipe with a combination of soft and hard, characterized in that: It comprises an inner steel pipe (1), an intermediate layer and an outer protective pipe (6), wherein the intermediate layer comprises, from the inside to the outside, a thermal insulation layer (2), a first reinforcement layer (3), a buffer layer (4) and a second reinforcement layer (5); A plurality of evenly distributed annular reinforcement plates (7) are embedded in the first reinforcement layer (3) and the second reinforcement layer (5), and circular holes distributed in an annular array are provided on the plurality of annular reinforcement plates (7), and thin steel wires (8) are provided through the corresponding plurality of circular holes.

2. The soft-hard combined prefabricated steam overhead insulation pipe according to claim 1, characterized in that: The distance between two adjacent annular reinforcement plates (7) in the first reinforcement layer (3) is the same as the distance between two adjacent annular reinforcement plates (7) in the second reinforcement layer (5).

3. The soft-hard combined prefabricated steam overhead insulation pipe according to claim 1, characterized in that: The annular reinforcement plate (7) in the first reinforcement layer (3) is located in the middle of the two annular reinforcement plates (7) in the second reinforcement layer (5).

4. The soft-hard combined prefabricated steam overhead insulation pipe according to claim 1, characterized in that: The thermal insulation layer (2) is a polyurethane thermal insulation material.

5. The soft-hard combined prefabricated steam overhead insulation pipe according to claim 1, characterized in that: The buffer layer (4) is made of aerogel material.

6. The soft-hard combined prefabricated steam overhead insulation pipe according to claim 1, characterized in that: The outer protective tube (6) is made of polyethylene.

7. The soft-hard combined prefabricated steam overhead insulation pipe according to claim 1, characterized in that: The first reinforcement layer (3) and the second reinforcement layer (5) are both made of rubber.

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