Polyurethane anti-corrosion heat-insulation heat-preservation pipe
By using a three-layer composite insulation material and a hot-laying method, the problems of numerous pipe gaps and thermal bridging were solved, improving the insulation performance and construction efficiency of the pipes, and enhancing their safety and practicality.
Patent Information
- Application Number
- CN202520743245.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-04-18
AI Technical Summary
Existing pipeline insulation structures suffer from numerous gaps and severe thermal bridging, leading to decreased insulation performance and a large amount of caulking work, which affects pipeline safety and efficiency.
The structure employs a three-layer composite insulation material, including an outer protective layer, a polyurethane insulation layer, a calcium silicate hard insulation layer, and a soft insulation layer. By embedding elastic materials in the gaps and combining them with a hot-laying method, the number of gaps and thermal bridging phenomena are reduced.
It improves the thermal insulation performance of the pipeline, reduces the amount of caulking work, enhances the practicality and safety of the pipeline, and prevents damage from relative displacement between the working pipe and the rigid insulation layer.
Smart Images
Figure CN223953631U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of thermal insulation pipe, more specifically, to a polyurethane anticorrosive heat insulation pipe. BACKGROUND
[0002] As one of the main measures of treating haze and energy saving, central heating needs to be piped, in order to avoid adverse environmental impact on urban life and production, large-scale cogeneration units are usually built in the suburbs or towns far away from large cities, which greatly increases the length of the main pipe of the heating project, and the diameter of the heating pipe is also getting larger and larger, the design of long-distance transportation pipe usually has two laying methods, one is straight laying, and the other is overhead laying, and the pressure is also getting higher and higher, and the requirement for safe operation of the pipe network is also getting higher and higher.
[0003] In the prior art, the laid pipe adopts a single-layer thermal insulation structure, i.e. an outer protective layer and an internally arranged calcium carbonate hard protective layer, but the calcium carbonate hard protective layer has many gaps at the pipe core connection, for example, a twelve-meter-long straight pipe has about twenty gaps inside, which results in a large amount of caulking work and low efficiency, and the existing pipe support and working pipe are not complete thermal insulation materials, forming a thermal bridge, which reduces the thermal insulation performance. UTILITY MODEL CONTENT
[0004] 1. Technical problem to be solved
[0005] In view of the problems in the prior art, the purpose of the utility model is to provide a polyurethane anticorrosive heat insulation pipe, which can realize the multiple thermal insulation effect of three-layer composite thermal insulation material on the inside of the pipe, ensure the heat loss in the transportation process, and adopt a complete thermal insulation material between the support and the working pipe, without thermal bridge, further reducing heat loss, and finally through the pipe core interface of the thermal insulation material, only two gaps are formed, greatly reducing the caulking workload and improving the practicability of the overall pipe.
[0006] 2. Technical scheme
[0007] To solve the above problems, the utility model adopts the following technical scheme.
[0008] A polyurethane anticorrosive heat insulation pipe, comprising a main pipe, pipe supports are detachably installed on the upper and lower sides of the outer wall of the main pipe, the left and right sides of the two pipe supports are commonly screw-connected with the same bolt connecting piece, a bottom support is fixedly installed on the surface of the pipe support and located at the bottom end of the main pipe, and the main pipe comprises an outer protective layer, a polyurethane thermal insulation layer, a calcium silicate hard thermal insulation layer and a soft thermal insulation layer.
[0009] Further, the calcium silicate hard insulation layer is arranged outside the soft insulation layer, the polyurethane insulation layer is arranged outside the calcium silicate hard insulation layer, and the outer protective layer is arranged outside the polyurethane insulation layer.
[0010] Further, the middle part of the polyurethane insulation layer is provided with a gap two, and the middle part of the calcium silicate hard insulation layer is provided with a gap one.
[0011] Further, the gap two and the gap one are both embedded with elastic insulation materials.
[0012] 3. Beneficial effects
[0013] Compared with the prior art, the utility model has the advantages that:
[0014] (1) The three-layer composite insulation structure of the soft insulation layer, the calcium silicate hard insulation layer and the polyurethane insulation layer is adopted to fill the gap between the calcium silicate and the working pipe, reduce the convection heat exchange in the pipe and improve the overall insulation performance.
[0015] (2) The hot laying method is adopted, the insulation pipes are erected and connected, and then air is passed to make the pipes reach the hot state; compared with the cold laying method, the working core pipe is not easy to expand in the hot state, the pipe gap can be reduced from twenty to two, the caulking workload is reduced, and the pipe practicability is improved.
[0016] (3) The soft insulation layer is directly contacted with the working pipe, and the soft insulation layer with a thickness of five to ten millimeters is adopted to cover the working pipe, so that the relative displacement between the working pipe and the hard insulation layer is prevented, and the hard insulation layer and the working pipe are prevented from being damaged. BRIEF DESCRIPTION OF DRAWINGS
[0017] Fig. 1 It is an overall pipe erecting structure schematic view in the utility model;
[0018] Fig. 2 It is a pipe internal section structure schematic view in the utility model;
[0019] Fig. 3 It is a caulking structure schematic view in the utility model.
[0020] Explanation of reference numerals in the drawing:
[0021] 1, main pipe; 2, pipe support; 3, bolt connecting piece; 4, bottom support; 5, outer protective layer; 6, polyurethane insulation layer; 7, calcium silicate hard insulation layer; 8, soft insulation layer; 9, gap one; 10, gap two. DETAILED DESCRIPTION
[0022] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present application fall within the scope of the present application.
[0023] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0024] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected" can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can be connected inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0025] Embodiment 1:
[0026] Please refer to Figs. 1-3 A polyurethane anticorrosive heat-insulating pipe, comprising a main pipe 1, characterized in that: the upper and lower sides of the outer wall of the main pipe 1 are detachably provided with pipe supports 2, the left and right sides of the two pipe supports 2 are jointly and threadedly connected with the same bolt connecting piece 3, the surface of the pipe support 2 and located at the bottom end of the main pipe 1 is fixedly provided with a bottom support 4, and the main pipe 1 comprises an outer protective layer 5, a polyurethane insulation layer 6, a calcium silicate hard insulation layer 7 and a soft insulation layer 8.
[0027] The calcium silicate hard insulation layer 7 is arranged on the outer layer of the soft insulation layer 8, the polyurethane insulation layer 6 is arranged on the outer layer of the calcium silicate hard insulation layer 7, the outer protective layer 5 is arranged on the outer layer of the polyurethane insulation layer 6, the middle part of the polyurethane insulation layer 6 is provided with a gap two 10, the middle part of the calcium silicate hard insulation layer 7 is provided with a gap one 9, and the inside of the gap two 10 and the gap one 9 is embedded with elastic insulation material.
[0028] Specifically, the soft thermal insulation layer 8 and the working pipeline directly contact, and the soft thermal insulation layer 8 with a thickness of 5-10 mm is used to coat the working pipeline, so that the relative displacement between the working pipeline and the hard thermal insulation layer is prevented, and the hard thermal insulation layer and the working pipeline are prevented from being damaged.
[0029] The working principle of the utility model is: firstly, the half-cost pipeline with the laid hard thermal insulation layer is put into the mold in the factory, polyurethane raw material liquid foaming is injected, the polyurethane can completely wrap the hard thermal insulation layer, makes the thermal insulation pipeline become seamless whole, improves the whole thermal insulation performance, finally the pipeline whole is placed in the erecting position, utilizes the bolt connecting piece 3 to wrap the pipeline support 2 in the outside of the main pipeline 1, and the fixation of the main pipeline 1 is completed.
[0030] The above is only the preferred specific implementation of the utility model; but the protection scope of the utility model is not limited to this. Any skilled person in the art in the technical range disclosed by the utility model, according to the technical scheme and the improvement concept of the utility model, is equivalent to replace or change, and should be covered in the protection scope of the utility model.
Claims
1. A polyurethane anticorrosive thermal insulation pipe comprising a main pipe (1), characterized in that: The upper and lower sides of the outer wall of the main pipeline (1) are detachably provided with pipeline supports (2), the left and right sides of the two pipeline supports (2) are commonly threadedly connected with the same bolt connecting piece (3), the surface of the pipeline support (2) and the bottom end of the main pipeline (1) are fixedly provided with a bottom support (4), and the main pipeline (1) comprises an outer protective layer (5), a polyurethane thermal insulation layer (6), a calcium silicate hard thermal insulation layer (7) and a soft thermal insulation layer (8).
2. The polyurethane anticorrosive thermal insulation pipe according to claim 1, characterized in that: The calcium silicate hard thermal insulation layer (7) is arranged on the outer layer of the soft thermal insulation layer (8), the polyurethane thermal insulation layer (6) is arranged on the outer layer of the calcium silicate hard thermal insulation layer (7), and the outer protective layer (5) is arranged on the outer layer of the polyurethane thermal insulation layer (6).
3. The polyurethane anticorrosive thermal insulation pipe according to claim 1, characterized in that: The middle part of the polyurethane thermal insulation layer (6) is provided with a gap two (10), and the middle part of the calcium silicate hard thermal insulation layer (7) is provided with a gap one (9).
4. The polyurethane anticorrosive thermal-insulation pipe according to claim 3, characterized in that: The gap two (10) and the gap one (9) are both embedded with elastic thermal insulation materials.