An overhead steam pre-insulated pipe
The design of overhead prefabricated steam insulated pipes solved the problem of low construction efficiency, achieving efficient construction and excellent insulation effect, and extending service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU DEXIN PIPELINE TECH CO LTD
- Filing Date
- 2025-08-06
- Publication Date
- 2026-07-14
AI Technical Summary
The existing steam transmission and insulation pipelines have low construction efficiency, are greatly affected by weather and environment, and are difficult to construct.
The system uses an overhead steam prefabricated insulated pipeline, which consists of multiple working steel pipes connected end to end and welded together. Only the joint covering layer is required on site. The insulation layer consists of a protective pad layer, a rigid insulation layer, a reflective isolation layer, a rigid foam layer, and an outer protective pipe. Aerogel felt is used to provide expansion joints.
It reduces the on-site covering area, lowers construction difficulty, improves construction efficiency, and enhances insulation performance and extends service life through a multi-layer insulation structure.
Smart Images
Figure CN224497796U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steam transmission technology, and more specifically, to an overhead pre-insulated steam pipeline. Background Technology
[0002] Steam transport is the process of safely and efficiently delivering high-temperature, high-pressure steam generated by a boiler to heat-using equipment through an insulated pipeline network. The core of this process lies in insulation, drainage, pressure reduction, and monitoring. It is necessary to minimize heat loss and the risk of water hammer while ensuring that the terminal receives stable, dry steam to provide a reliable heat source for industrial heating, power generation, or heating.
[0003] Most existing insulated pipes used for steam transportation are installed on-site first, and then the insulation layer is wrapped around the pipe. The area to be covered is large, which is greatly affected by weather and environment, making the construction difficult and resulting in low construction efficiency. Utility Model Content
[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an overhead steam pre-insulated pipe.
[0005] To achieve the above objectives, the present invention provides the following technical solution: an overhead steam prefabricated insulated pipe, comprising multiple working steel pipes, wherein the multiple working steel pipes are connected end to end in sequence, and every two adjacent working steel pipes are fixedly connected by welding, each working steel pipe is fitted with an insulation layer, and a joint layer is provided between every two adjacent insulation layers, the joint layer being fitted at the weld joint of the two working steel pipes.
[0006] Preferably, the insulation layer and the patching layer each include, from the inside out, a protective pad layer, a rigid insulation layer, a reflective insulating layer, a rigid foam layer, and an outer protective tube.
[0007] Preferably, the protective pad is a nano-aerogel.
[0008] Preferably, the rigid insulation layer comprises multiple layers of tiles, each layer of which is composed of multiple calcium silicate tiles.
[0009] Preferably, an aerogel felt is provided between the calcium silicate tile blocks of the patch layer and the calcium silicate tile blocks of the insulation layer in the same layer.
[0010] Preferably, the reflective isolation layer is an aluminum foil reflective film.
[0011] Preferably, the rigid foam layer is polyurethane foam.
[0012] Preferably, the outer protective tube is a color steel plate.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] 1. During on-site installation, multiple working steel pipes are connected end to end in sequence, and the joints of the working steel pipes are welded and fixed to connect the multiple working steel pipes. Then, only the welded joints of the working steel pipes need to be covered with a jointing layer, and the gaps between two adjacent insulation layers are filled with the jointing layer. Compared with the traditional method of covering all steel pipes on-site, the scope of on-site covering required by this application is greatly reduced, the engineering construction difficulty is smaller, and the construction efficiency is higher.
[0015] 2. Aerogel felt can deform under pressure. When aerogel felt is placed between calcium silicate tiles in the same layer, it serves to provide expansion joints for the calcium silicate tiles, so that multiple calcium silicate tiles in the same layer will not be squeezed, thus ensuring service life.
[0016] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description
[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;
[0019] Figure 2 This is a schematic diagram of the insulation layer structure according to an embodiment of the present utility model;
[0020] Figure 3 This is a schematic diagram of the calcium silicate tile structure according to an embodiment of the present invention;
[0021] Figure 4 This is a cross-sectional view of the patch layer in an embodiment of the present utility model;
[0022] Figure 5 This is an embodiment of the present utility model. Figure 4 Enlarged view of point A in the middle.
[0023] In the diagram: 1. Working steel pipe; 2. Insulation layer; 3. Jointing layer; 4. Protective padding layer; 5. Rigid insulation layer; 501. Calcium silicate tile; 6. Reflective isolation layer; 7. Rigid foam layer; 8. Outer protective pipe; 9. Aerogel felt. Detailed Implementation
[0024] 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.
[0025] In the description of the embodiments of this utility model, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0027] Reference Figures 1 to 5 This utility model provides a technical solution: an overhead steam prefabricated insulated pipe, including multiple working steel pipes 1, which are connected end to end in sequence. Every two adjacent working steel pipes 1 are fixedly connected by welding. Each working steel pipe 1 is fitted with an insulation layer 2, and a joint layer 3 is provided between every two adjacent insulation layers 2. The joint layer 3 is fitted at the weld joint of the two working steel pipes 1.
[0028] like Figure 1 and Figure 4 The length of the working steel pipe 1 in the figure is only for illustration. Both ends of the working steel pipe 1 are longer than the length of the insulation layer 2 on it, which facilitates the welding of two adjacent working steel pipes 1. The insulation layer 2 completes the wrapping of the working steel pipe 1 in the factory.
[0029] During on-site installation, multiple working steel pipes 1 are connected end to end in sequence, and the joints of the working steel pipes 1 are welded and fixed to connect the multiple working steel pipes 1. Then, only the welded joints of the working steel pipes 1 need to be covered with the jointing layer 3, and the gaps between two adjacent insulation layers 2 are filled with the jointing layer 3. Compared with the traditional method of covering all steel pipes on-site, the scope of on-site covering required in this application is greatly reduced, the engineering construction difficulty is lower, and the construction efficiency is higher.
[0030] Specifically, the insulation layer 2 and the patching layer 3 each include, from the inside out, a protective pad layer 4, a rigid insulation layer 5, a reflective isolation layer 6, a rigid foam layer 7, and an outer protective tube 8.
[0031] like Figure 2 Compared to traditional insulated pipes, this application features multi-layer insulation, resulting in better insulation performance.
[0032] Specifically, the protective pad 4 is a nano-aerogel, such as... Figure 2 Nano-aerogel is coated on the working steel pipe 1.
[0033] Specifically, the rigid insulation layer 5 includes multiple tile layers, each of which is composed of multiple calcium silicate tiles 501;
[0034] Traditional insulated pipes use soft insulation materials. After prolonged use, these soft materials are prone to deformation, settling, or becoming porous, resulting in air gaps inside the insulation material and affecting its insulation performance.
[0035] like Figure 2 and Figure 3 Calcium silicate tile 501 is a rigid material with high compressive strength, will not deform, and ensures thermal insulation performance.
[0036] Specifically, an aerogel felt 9 is provided between the calcium silicate tile 501 of the patch layer 3 and the calcium silicate tile 501 of the insulation layer 2.
[0037] like Figure 4 and Figure 5 When the working steel pipe 1 is heated and expands, it will generate axial thrust, which will cause the working steel pipe 1 to expand and contract. When the working steel pipe 1 expands and contracts, it will drive the calcium silicate tile 501 covering it to move, which will cause multiple calcium silicate tile 501 to be squeezed together, affecting the service life.
[0038] The aerogel felt 9 can deform under pressure. When the aerogel felt 9 is placed between the calcium silicate tiles 501 in the same layer, it serves to provide expansion joints for the calcium silicate tiles 501. This prevents compression between multiple calcium silicate tiles 501 in the same layer and ensures service life.
[0039] Specifically, the reflective isolation layer 6 is an aluminum foil reflective film.
[0040] Specifically, the rigid foam layer 7 is polyurethane foam.
[0041] Specifically, the outer protective tube 8 is a color steel plate;
[0042] Traditional insulated pipe supports are fixedly connected to steel pipes, resulting in incomplete insulation material covering the steel pipes and severe heat loss at the connection between the steel pipes and supports. The support of this application can be fixedly connected to the outer protective pipe 8, and the support does not contact the working steel pipe 1, resulting in a more complete insulation layer 2 and better insulation performance.
[0043] Working principle: During on-site installation, multiple working steel pipes 1 are connected end to end in sequence, and the joints of the working steel pipes 1 are welded and fixed to connect the multiple working steel pipes 1. Then, only the jointing layer 3 is needed to cover the welded joints of the working steel pipes 1 and fill the gaps between two adjacent insulation layers 2.
[0044] It should be noted that the standard parts used in this application can all be purchased from the market, and the specific connection methods of each part are all conventional methods such as bolts, rivets, and welding that are mature in the existing technology. Furthermore, the machinery, parts, and equipment all adopt conventional models in the existing technology, and will not be described in detail here.
[0045] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.
Claims
1. An overhead steam prefabricated insulated pipe, characterized in that, It includes multiple working steel pipes (1), which are connected end to end in sequence. Every two adjacent working steel pipes (1) are fixedly connected by welding. Each working steel pipe (1) is fitted with an insulation layer (2). A joint layer (3) is provided between every two adjacent insulation layers (2). The joint layer (3) is fitted at the weld joint of the two working steel pipes (1).
2. The overhead steam pre-insulated pipeline according to claim 1, characterized in that: The insulation layer (2) and the patching layer (3) both include, from the inside out, a protective pad layer (4), a rigid insulation layer (5), a reflective isolation layer (6), a rigid foam layer (7), and an outer protective tube (8).
3. The overhead steam pre-insulated pipeline according to claim 2, characterized in that: The protective pad (4) is a nano-aerogel.
4. The overhead steam pre-insulated pipeline according to claim 2, characterized in that: The rigid insulation layer (5) includes multiple tile layers, each of which is composed of multiple calcium silicate tiles (501).
5. The overhead steam pre-insulated pipeline according to claim 4, characterized in that: Aerogel felt (9) is provided between the calcium silicate tile (501) of the patch layer (3) and the calcium silicate tile (501) of the insulation layer (2).
6. The overhead steam pre-insulated pipeline according to claim 2, characterized in that: The reflective isolation layer (6) is an aluminum foil reflective film.
7. The overhead steam pre-insulated pipeline according to claim 2, characterized in that: The rigid foam layer (7) is polyurethane foam.
8. The overhead steam pre-insulated pipeline according to claim 2, characterized in that: The outer protective tube (8) is a color steel plate.