Thermal insulation pipe structure facilitating water leakage self-detection

Abstract

The utility model discloses a thermal insulation pipe structure convenient for water leakage self-detection, which relates to the technical field of thermal insulation pipes and comprises an inner pipe, a leakage detection layer is arranged on the outer wall of the inner pipe, a thermal insulation layer is arranged on the outer wall of the leakage detection layer, a supporting layer is arranged on the outer wall of the thermal insulation layer, and a protective layer is arranged on the outer wall of the supporting layer. The inner pipe, the heat preservation layer, the supporting layer and the protection layer are sequentially arranged from inside to outside. According to the heat preservation pipe structure convenient for water leakage self-detection, by arranging the heat preservation layer, the supporting layer and the protection layer, a medium in the pipe can be kept in a relatively stable temperature state, external moisture can be effectively prevented from entering the heat preservation pipe, it is guaranteed that the structure of each layer in the heat preservation pipe and the pipeline are not damaged, and the service life of the pipeline is prolonged; by arranging the optical fiber and a plurality of optical phase sensors outside the inner pipe, the leakage area of the inner pipe can be detected, so that maintenance is carried out in time, and it is ensured that the performance of the thermal insulation pipe is not affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of heat preservation pipe, concretely to a heat preservation pipe structure convenient for water leakage self -detection. BACKGROUND

[0002] In the central heating system, in order to meet the demand of residents in winter heating, it needs to transport heat medium for a long distance, and a large amount of heat will be lost in the conveying process of the traditional non-insulation pipeline, which leads to the terminal temperature not reaching the expectation, so the conveying pipeline needs to have excellent heat preservation performance, reduces the heat loss of medium in the conveying process, reduces energy consumption, and ensures that the heat medium can reach the use terminal in the state close to the initial temperature.

[0003] In order to overcome the above-mentioned defects, the prior art (Chinese patent application with application number CN202123000735.9 and application date of 2021-12-01) a kind of interlayer heat preservation pipe, by using two layers of rubber with many air holes as buffer layer, it can improve the damping effect of heat preservation pipe, enhance the protection effect to inner tube and insulation layer, also can improve the air content in buffer layer, so that buffer layer also has good heat insulation effect, overall not only improves the damping performance of heat preservation pipe and is not easy to be damaged, and the heat preservation effect is greatly improved.

[0004] Although the medium can be heat preserved in the prior art, it is not convenient to automatically detect when leakage occurs in the heat preservation pipe, and if the leakage occurs in part of the area of the heat preservation pipe, the heat medium will penetrate into the insulation layer if it cannot be repaired in time, which will damage the original heat preservation structure, cause the heat preservation performance to decline, cannot effectively provide the expected heat for terminal user, and affect the heating effect in room. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of heat preservation pipe structure convenient for water leakage self-detection to solve the problem that when part of the area of the heat preservation pipe leaks, it is not convenient to automatically detect and repair, the heat medium penetrates into the insulation layer and damages the original heat preservation structure, causes the heat preservation performance to decline, and affects the heating effect in room as raised in the above background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of heat preservation pipe structure convenient for water leakage self-detection, including inner tube, the outer wall of the inner tube is provided with leakage detection layer, the outer wall of the leakage detection layer is provided with heat preservation layer, the outer wall of the heat preservation layer is provided with support layer, the outer wall of the support layer is provided with protective layer, the inner tube, heat preservation layer, support layer and protective layer are sequentially arranged from inside to outside, and each layer is fixedly connected by the way of adhesion.

[0007] Furthermore, the leakage detection layer is internally provided with an optical fiber for transmitting optical signals, and the outer surface of the optical fiber is coated with a protective coating. The leakage detection layer is internally provided with several optical phase sensors, which are used to detect the phase change of the optical signal in the optical fiber.

[0008] Furthermore, the optical phase sensors are equidistantly arranged along the axial direction of the optical fiber, and the optical phase sensors are coupled to the optical fiber. The outer wall of the inner tube is provided with several mounting grooves, and the optical phase sensors are fixedly connected to the inner wall of the mounting grooves.

[0009] Furthermore, a limiting groove is formed on the outer wall of the inner tube, and a limiting groove is formed on the inner wall of the insulation layer.

[0010] Furthermore, the optical fiber is spirally wound around the inner walls of limiting groove one and limiting groove two, and the tightness of the optical fiber winding is moderate.

[0011] Furthermore, the insulation layer uses glass wool as the insulation material, and the insulation layer is tightly attached to the outer wall of the inner tube.

[0012] Furthermore, the support layer has a mesh structure and is made of stainless steel mesh, while the protective layer is made of fiberglass.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This convenient leak-detection insulated pipe structure, through the setting of an insulation layer, a support layer, and a protective layer, helps maintain a relatively stable temperature state for the medium inside the pipe and effectively prevents external moisture from entering the interior of the insulated pipe, ensuring that the internal structure and the pipe itself are not damaged and extending the service life of the pipe. By setting optical fibers and several optical phase sensors on the outside of the inner pipe, the area where the inner pipe leaks can be detected, so that timely repairs can be carried out and the performance of the insulated pipe can be ensured. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the insulation pipe of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the optical fiber and optical phase sensor of this utility model;

[0017] Figure 3 This is a schematic diagram of the inner tube and optical fiber of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the inner tube and the limiting groove of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the insulation layer and the limiting groove 2 of this utility model.

[0020] In the diagram: 1. Inner pipe; 2. Leakage detection layer; 3. Optical phase sensor; 4. Insulation layer; 5. Support layer; 6. Protective layer; 7. Optical fiber; 8. Limiting groove one; 9. Limiting groove two; 10. Mounting groove. Detailed Implementation

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

[0022] Example 1: Please refer to Figures 1-5 This utility model provides the following technical solution: a heat-insulating pipe structure for convenient self-detection of leaks, including an inner pipe 1, a leakage detection layer 2 on the outer wall of the inner pipe 1, a heat insulation layer 4 on the outer wall of the leakage detection layer 2, a support layer 5 on the outer wall of the heat insulation layer 4, and a protective layer 6 on the outer wall of the support layer 5. The inner pipe 1, the heat insulation layer 4, the support layer 5, and the protective layer 6 are arranged sequentially from the inside to the outside, and each layer is fixedly connected by bonding. The heat insulation layer 4 is made of glass wool, and the heat insulation layer 4 is tightly attached to the outer wall of the inner pipe 1. The support layer 5 has a mesh structure and is made of [material missing]. The protective layer 6 is made of fiberglass.

[0023] When the insulated pipe is transporting heat medium, the heat transfer can be effectively reduced by setting the insulation layer 4 outside the inner pipe 1, which greatly reduces the heat loss of the heat medium transported inside the pipe. In addition, the glass wool insulation material has a very low thermal conductivity, is soft in texture, and can fit tightly with the inner pipe 1. By setting the stainless steel mesh structure support layer 5 outside the insulation layer 4, it is ensured that the relative positions of the internal layers can be maintained when the insulated pipe is affected by external pressure or its own weight, so as to prevent deformation or displacement of the layers. By setting the fiberglass protective layer 6 outside the support layer 5, the strength of the insulated pipe can be increased and its impact resistance can be strengthened. It can also protect the insulated pipe in harsh environments and prevent moisture from entering the interior of the insulated pipe, thus extending the service life of the insulated pipe.

[0024] Example 2:

[0025] Based on Embodiment 1, by setting an optical fiber 7 and several optical phase sensors 3 outside the inner tube 1, the area where the inner tube 1 has leaked can be detected in a timely manner. The specific structure is as follows: The inside of the leakage detection layer 2 is provided with an optical fiber 7 for transmitting optical signals, and the outside of the optical fiber 7 is coated with a protective coating. The inside of the leakage detection layer 2 is provided with several optical phase sensors 3, and the optical phase sensors 3 are used to detect the phase change of the optical signal in the optical fiber 7. The optical phase sensors 3 are equidistantly arranged along the axial direction of the optical fiber 7, and the optical phase sensors 3 are coupled to the optical fiber 7. Several mounting grooves 10 are opened on the outer wall of the inner tube 1, and the optical phase sensors 3 are fixedly connected to the inner wall of the mounting grooves 10. A limiting groove 8 is opened on the outer wall of the inner tube 1, and a limiting groove 9 is opened on the inner wall of the insulation layer 4. The optical fiber 7 is spirally wound on the inner wall of the limiting groove 8 and the limiting groove 9, and the tightness of the winding of the optical fiber 7 is moderate.

[0026] When a portion of the inner tube 1 leaks, the leaked water will seep into the leak detection area where the optical fiber 7 is located, causing physical deformation such as micro-bending or stretching of the optical fiber 7. This will lead to a change in the phase of the optical signal in the optical fiber 7. Several optical phase sensors 3 can monitor the phase change of the optical signal passing through their own position in real time and accurately. If the change exceeds the normal fluctuation range, an alarm will be issued, and the leaking area will be accurately detected. This allows for timely detection of potential water leakage and repair, ensuring the insulation performance of the insulation pipe. By applying a protective coating to the optical fiber 7, a certain degree of support and rigidity can be provided for the optical fiber 7, and water can be prevented from seeping into the interior of the optical fiber 7. The limiting groove 1 8 and limiting groove 2 9 can be used to ensure that the optical fiber 7 is laid according to the opened path without deviation or misalignment. Several mounting grooves 10 are used to install several optical phase sensors 3.

[0027] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heat-insulating pipe structure for convenient self-detection of leaks, comprising an inner pipe (1), characterized in that: The outer wall of the inner tube (1) is provided with a leakage detection layer (2), the outer wall of the leakage detection layer (2) is provided with a heat insulation layer (4), the outer wall of the heat insulation layer (4) is provided with a support layer (5), the outer wall of the support layer (5) is provided with a protective layer (6), the inner tube (1), the heat insulation layer (4), the support layer (5) and the protective layer (6) are arranged sequentially from the inside to the outside, and each layer is fixedly connected by bonding.

2. The heat-insulating pipe structure for convenient self-detection of leaks according to claim 1, characterized in that: The leakage detection layer (2) is provided with an optical fiber (7) for transmitting optical signals, and the outside of the optical fiber (7) is coated with a protective coating. The leakage detection layer (2) is provided with a number of optical phase sensors (3), and the optical phase sensors (3) are used to detect the phase change of the optical signal in the optical fiber (7).

3. The heat-insulating pipe structure for convenient self-detection of leaks according to claim 2, characterized in that: The optical phase sensor (3) is equidistantly arranged along the axial direction of the optical fiber (7), and the optical phase sensor (3) is coupled to the optical fiber (7). The outer wall of the inner tube (1) is provided with several mounting grooves (10), and the optical phase sensor (3) is fixedly connected to the inner wall of the mounting groove (10).

4. The heat-insulating pipe structure for convenient self-detection of leaks according to claim 1, characterized in that: The outer wall of the inner tube (1) is provided with a limiting groove one (8), and the inner wall of the insulation layer (4) is provided with a limiting groove two (9).

5. The heat-insulating pipe structure for convenient self-detection of leaks according to claim 2, characterized in that: The optical fiber (7) is spirally wound around the inner walls of the first limiting groove (8) and the second limiting groove (9), and the tightness of the winding of the optical fiber (7) is moderate.

6. The heat-insulating pipe structure for convenient self-detection of leaks according to claim 1, characterized in that: The insulation layer (4) uses glass wool as the insulation material, and the insulation layer (4) is tightly attached to the outer wall of the inner tube (1).

7. The heat insulation pipe structure for convenient self-detection of leaks according to claim 1, characterized in that: The support layer (5) has a mesh structure and is made of stainless steel mesh, while the protective layer (6) is made of fiberglass.

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