Prefabricated heat preservation corrugated pipe

Abstract

The utility model discloses a prefabricated heat preservation corrugated pipe which comprises a protective layer, a heat preservation layer, a corrosion-resistant layer, a limiting sleeve, a transverse rib, a vertical rib, a filling layer, an inserting block and an inner pipe, the inner side wall of the protective layer is fixedly connected to the outer wall of the heat preservation layer, and the inner side wall of the heat preservation layer is fixedly connected to the outer wall of the corrosion-resistant layer; the inner side wall of the corrosion-resistant layer is fixedly connected to a limiting sleeve, the interior of the limiting sleeve is fixedly connected to the outer wall of a transverse rib, the outer wall of the transverse rib is connected to the outer wall of a vertical rib in a sleeving mode, and the inner side wall of the limiting sleeve is slidably connected to the outer wall of an insertion block. And the filling layer is arranged between the inner pipe and the limiting sleeve, internal pipelines of the corrugated pipe are convenient to replace, the maintenance cost is reduced, and the transverse ribs and the vertical ribs are arranged in the filling layer, so that the deformation resistance and the extrusion resistance of the corrugated pipe are convenient to improve.

Description

Technical Field

[0001] The utility model belongs to the technical field of corrugated pipes, and particularly relates to a prefabricated thermal insulation corrugated pipe. Background Technique

[0002] A corrugated pipe refers to a tubular elastic sensitive element formed by connecting foldable corrugated sheets along the folding and telescopic direction. Corrugated pipes are widely used in instruments and meters. Their main purpose is to serve as a measuring element for pressure measuring instruments, converting pressure into displacement or force. The corrugated pipe wall is relatively thin, with high sensitivity, and the measurement range is from dozens of pascals to dozens of megapascals.

[0003] Among them, the one with the publication number CN208457368U discloses a thermal insulation double-wall corrugated pipe, which includes a double-wall corrugated pipe layer and a vacuum adiabatic panel thermal insulation layer connected to the double-wall corrugated pipe layer. The vacuum adiabatic panel used in the utility model has good thermal insulation performance, and a very thin thickness can achieve a high thermal insulation effect. Replacing the existing polyurethane foam thermal insulation material not only reduces the thickness of the thermal insulation layer but also improves the thermal insulation effect; the two design schemes are suitable for different working conditions.

[0004] However, there are still problems. Currently, the thermal insulation layers of prefabricated overhead thermal insulation pipes generally use soft thermal insulation materials such as high-temperature glass wool and rock wool. The initial investment is small, and the effect is good in the short term. However, for the soft thermal insulation structure overhead pipe, the compressive capacity is poor, and it is easily deformed severely by external forces. The soft thermal insulation layer is prone to collapse. After long-term use, the phenomenon of the upper part of the thermal insulation layer being thin and the lower part being thick will occur, resulting in a reduction in the thermal insulation effect. Therefore, in view of the above problems, a prefabricated thermal insulation corrugated pipe is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a prefabricated thermal insulation corrugated pipe to solve the technical problems raised in the background technique.

[0006] To achieve the above purpose, the specific technical solution of the utility model is as follows: The prefabricated thermal insulation corrugated pipe includes a protective layer, a thermal insulation layer, a corrosion-resistant layer, a limiting sleeve, horizontal ribs, vertical ribs, a filling layer, insertion blocks, and an inner pipe. The inner side wall of the protective layer is fixedly connected to the outer wall of the thermal insulation layer. The inner side wall of the thermal insulation layer is fixedly connected to the outer wall of the corrosion-resistant layer. The inner side wall of the corrosion-resistant layer is fixedly connected to the limiting sleeve. The inner part of the limiting sleeve is fixedly connected to the outer wall of the horizontal ribs. The outer wall of the horizontal ribs is sleeved on the outer wall of the vertical ribs. The inner side wall of the limiting sleeve is slidably connected to the outer wall of the insertion blocks.

[0007] Preferably, the inner side wall of the insertion blocks is fixedly connected to the outer wall of the inner pipe, and a filling layer is arranged between the inner pipe and the limiting sleeve.

[0008] Preferably, the protective layer is made of nitrile rubber material.

[0009] Preferably, the thermal insulation layer is made of rock wool material.

[0010] Preferably, the corrosion-resistant layer is made of polytetrafluoroethylene material.

[0011] Preferably, both the horizontal ribs and the vertical ribs are made of nylon material.

[0012] Preferably, the filling layer is made of metal rubber material.

[0013] The prefabricated thermal insulation bellows of the present utility model has the following advantages:

[0014] 1. For this prefabricated thermal insulation bellows, by adopting a sliding connection between the inner pipe and the limit sleeve, and a filling layer is arranged between the inner pipe and the limit sleeve, it is convenient to replace the pipeline inside the bellows, reduce the maintenance cost, and by arranging horizontal ribs and vertical ribs inside the filling layer, it is convenient to improve the anti-deformation and extrusion resistance of the bellows.

[0015] 2. By arranging a wear-resistant protective layer on the outer side of the bellows, and the protective layer is made of nitrile rubber material. Due to the advantages of good oil resistance, high wear resistance, good heat resistance and strong adhesion of nitrile rubber, the protection of the bellows is improved to prevent leakage. By arranging a thermal insulation layer on the inner side of the bellows, and the thermal insulation layer is made of rock wool material, it is convenient to isolate the connection between the bellows and the external temperature. By arranging a corrosion-resistant layer inside the bellows, and the corrosion-resistant layer is made of polytetrafluoroethylene material, it prevents the inside of the bellows from rotting and causing the leakage of the internal transmission medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0017] Figure 1 is the overall structural schematic diagram of the present utility model;

[0018] Figure 2 is the front view structural schematic diagram of the present utility model;

[0019] Figure 3 is in the present utility model Figure 2 is the partial enlarged structural schematic diagram of part A therein;

[0020] Explanation of the marks in the figure: 1. Protective layer; 2. Thermal insulation layer; 3. Corrosion-resistant layer; 4. Limit sleeve; 5. Horizontal rib; 6. Vertical rib; 7. Filling layer; 8. Insert block; 9. Inner pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0022] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "length", "vertical", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the embodiments of the present invention.

[0023] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0024] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific situations.

[0025] The following disclosure provides many different embodiments or examples for implementing different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the embodiments of the present invention. In addition, the embodiments of the present invention may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0026] To better understand the purpose, structure, and function of the present invention, the prefabricated thermal insulation corrugated pipe of the present invention will be further described in detail below with reference to the drawings.

[0027] As Figures 1-3As shown in the figure, the prefabricated heat-insulating corrugated pipe of the utility model comprises a protective layer 1, a heat-insulating layer 2, a corrosion-resistant layer 3, a limiting sleeve 4, a transverse rib 5, a vertical rib 6, a filling layer 7, an insertion block 8 and an inner pipe 9. The inner side wall of the protective layer 1 is fixedly connected to the outer wall of the heat-insulating layer 2, the inner side wall of the heat-insulating layer 2 is fixedly connected to the outer wall of the corrosion-resistant layer 3, the inner side wall of the corrosion-resistant layer 3 is fixedly connected to the limiting sleeve 4, the inner part of the limiting sleeve 4 is fixedly connected to the outer wall of the transverse rib 5, the outer wall of the transverse rib 5 is sleeved on the outer wall of the vertical rib 6, and the inner side wall of the limiting sleeve 4 is slidably connected to the outer wall of the insertion block 8. By adopting a sliding connection mode between the inner pipe 9 and the limiting sleeve 4, and a filling layer 7 is arranged between the inner pipe 9 and the limiting sleeve 4, it is convenient to replace the internal pipeline of the corrugated pipe and reduce the maintenance cost. And by arranging the transverse rib 5 and the vertical rib 6 inside the filling layer 7, it is convenient to improve the anti-deformation and extrusion resistance of the corrugated pipe.

[0028] The inner side wall of the insertion block 8 is fixedly connected to the outer wall of the inner pipe 9, and a filling layer 7 is arranged between the inner pipe 9 and the limiting sleeve 4. The protective layer 1 is made of nitrile rubber material, the heat-insulating layer 2 is made of rock wool material, the corrosion-resistant layer 3 is made of polytetrafluoroethylene material, both the transverse rib 5 and the vertical rib 6 are made of nylon material, and the filling layer 7 is made of metal rubber material. By arranging a wear-resistant protective layer 1 on the outer side of the corrugated pipe, and the protective layer 1 is made of nitrile rubber material, due to the advantages of good oil resistance, high wear resistance, good heat resistance and strong adhesion of nitrile rubber, the protection of the corrugated pipe is improved and leakage is prevented. By arranging a heat-insulating layer 2 on the inner side of the corrugated pipe, and the heat-insulating layer 2 is made of rock wool material, it is convenient to isolate the connection between the corrugated pipe and the external temperature. By arranging a corrosion-resistant layer 3 inside the corrugated pipe, and the corrosion-resistant layer 3 is made of polytetrafluoroethylene material, it is prevented that the inside of the corrugated pipe rots and causes the leakage of the internal transmission medium.

[0029] When the utility model is in use, by arranging a wear-resistant protective layer 1 on the outer side of the corrugated pipe, and the protective layer 1 is made of nitrile rubber material, due to the advantages of good oil resistance, high wear resistance, good heat resistance and strong adhesion of nitrile rubber, the protection of the corrugated pipe is improved and leakage is prevented. By arranging a heat-insulating layer 2 on the inner side of the corrugated pipe, and the heat-insulating layer 2 is made of rock wool material, it is convenient to isolate the connection between the corrugated pipe and the external temperature. By arranging a corrosion-resistant layer 3 inside the corrugated pipe, and the corrosion-resistant layer 3 is made of polytetrafluoroethylene material, it is prevented that the inside of the corrugated pipe rots and causes the leakage of the internal transmission medium. By adopting a sliding connection mode between the inner pipe 9 and the limiting sleeve 4, and a filling layer 7 is arranged between the inner pipe 9 and the limiting sleeve 4, it is convenient to replace the internal pipeline of the corrugated pipe and reduce the maintenance cost. And by arranging the transverse rib 5 and the vertical rib 6 inside the filling layer 7, it is convenient to improve the anti-deformation and extrusion resistance of the corrugated pipe.

[0030] It is understood that the present utility model is described by means of some embodiments. Those skilled in the art will know that, without departing from the spirit and scope of the present utility model, various changes or equivalent substitutions can be made to these features and embodiments. Additionally, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the present utility model.

Claims

1. Prefabricated thermal insulation corrugated pipe, characterized by: The invention comprises a protective layer (1), a thermal insulation layer (2), a corrosion-resistant layer (3), a limiting sleeve (4), a transverse rib (5), a vertical rib (6), a filling layer (7), an insert (8) and an inner tube (9), wherein the inner wall of the protective layer (1) is fixedly connected to the outer wall of the thermal insulation layer (2), the inner wall of the thermal insulation layer (2) is fixedly connected to the outer wall of the corrosion-resistant layer (3), the inner wall of the corrosion-resistant layer (3) is fixedly connected to the limiting sleeve (4), the interior of the limiting sleeve (4) is fixedly connected to the outer wall of the transverse rib (5), the outer wall of the transverse rib (5) is sleeved on the outer wall of the vertical rib (6), and the inner wall of the limiting sleeve (4) is slidably connected to the outer wall of the insert (8).

2. The prefabricated thermal insulation corrugated pipe according to claim 1, characterized in that: The inner wall of the insert block (8) is fixedly connected to the outer wall of the inner tube (9), and a filling layer (7) is provided between the inner tube (9) and the limiting sleeve (4).

3. The prefabricated thermal insulation corrugated pipe according to claim 1, characterized in that: The protective layer (1) is made of nitrile rubber material.

4. The prefabricated thermal insulation corrugated pipe according to claim 1, characterized in that: The thermal insulation layer (2) is made of rock wool material.

5. The prefabricated thermal insulation corrugated pipe according to claim 1, characterized in that: The corrosion-resistant layer (3) is made of polytetrafluoroethylene material.

6. The prefabricated thermal insulation corrugated pipe according to claim 1, characterized in that: The transverse ribs (5) and the vertical ribs (6) are both made of nylon material.

7. The prefabricated thermal insulation corrugated pipe according to claim 1, characterized in that: The filling layer (7) is made of metal rubber material.

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