A kind of thermal insulation metal soft connecting pipe
By setting up the insulation layer, the waterproof layer and the stainless steel threading pipe in sequence outside the metal soft connection pipe, the problems of complex insulation construction, high cost and serious heat loss in the prior art are solved, and the effect of efficient insulation and convenient construction is achieved.
Patent Information
- Application Number
- CN202421630462.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-07-11
AI Technical Summary
The metal soft-connected pipe insulation method used in high-temperature medium pipelines has problems such as complex construction technology, high cost, poor maintenance and serious heat loss.
A thermally insulated metal soft connection pipe is designed. By setting the thermal insulation layer, a waterproof layer and a stainless steel threading pipe in sequence from inside to outside the outer periphery of the inner tube, the thermal insulation layer is tightly covered, the waterproof layer and the thermal insulation layer are closely fitted, and there is a gap between the stainless steel threading pipe and the thermal insulation layer, allowing for expansion and sliding, making it easy to install and connect.
It realizes that while improving the insulation performance of metal soft connection pipes, it simplifies on-site construction, reduces costs, and reduces heat loss, and improves the convenience of maintenance.
Smart Images
Figure CN222702883U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bellows structures, in particular to a heat-insulating metal soft connecting pipe. Background Art
[0002] In high-temperature medium pipelines, such as solar collectors, flexible metal flexible connecting pipes are often needed. The existing conventional insulation method is that after the pipeline is connected, the insulation material is coated on the outside of the metal flexible connecting pipe, and then the aluminum film tape is wrapped to protect the insulation material. When this method is applied to large projects, if the dual goals of insulation and aesthetics need to be achieved, there is a large workload, complicated operation, and high construction cost; if the cost needs to be reduced, a hard insulation pipe shell is usually used as an outer jacket, and then aluminum foil is wrapped around the outside for protection, which has an ugly appearance. If the above two methods encounter that the equipment connected to the insulation pipeline needs to be repaired, the insulation pipeline must be removed, and the removal will destroy the insulation structure. After the equipment is repaired, the insulation structure still needs to be restored, which has the defect of poor maintainability. In the project, because it is not possible to solve the problems of insulation construction process, control insulation cost and insulation structure aesthetics, this part of the metal hose has to be not insulated, and this part of the metal hose has a large heat loss during use. Utility Model Content
[0003] The utility model aims to provide a heat-insulating metal flexible connecting pipe to solve the problems existing in the above-mentioned prior art, so as to improve the convenience of on-site construction while improving the heat-insulating performance of the metal flexible connecting pipe.
[0004] To achieve the above purpose, the utility model provides the following solutions:
[0005] A thermal insulation metal flexible connecting pipe comprises an inner pipe, wherein the outer circumference of the inner pipe is sequentially covered with a thermal insulation layer, a waterproof layer and a stainless steel threading pipe from the inside to the outside, the thermal insulation layer tightly covers the outer circumference of the inner pipe, the waterproof layer is tightly fitted with the thermal insulation layer, and there is a gap between the stainless steel threading pipe and the thermal insulation layer.
[0006] Preferably, the thermal insulation layer is made of a glass fiber tape spirally wound around the outer circumference of the inner tube.
[0007] Preferably, the insulation layer is made of flame-retardant rubber-plastic insulation cotton tightly wrapped around the outer periphery of the inner tube.
[0008] Preferably, the waterproof layer is a waterproof heat shrink tube.
[0009] Preferably, the inner tube comprises a metal bellows serving as a high temperature medium circulation channel.
[0010] Preferably, the inner tube further comprises a metal woven mesh outside the metal bellows.
[0011] Preferably, both ends of the inner tube are provided with chucks, threads or flange joints.
[0012] Preferably, the stainless steel threading tube is not fixedly connected to other parts of the pipeline, and the stainless steel threading tube can be telescopically slid outside the waterproof layer.
[0013] Compared with the prior art, the utility model has achieved the following technical effects:
[0014] By sequentially arranging a thermal insulation layer, a waterproof layer and a stainless steel threading pipe on the outer circumference of the inner tube from the inside to the outside, the thermal insulation layer is tightly wrapped around the outer circumference of the inner tube, the waterproof layer and the thermal insulation layer are tightly fitted, and there is a gap between the stainless steel threading pipe and the thermal insulation layer. The stainless steel threading pipe can be telescopically slid to facilitate pipeline installation and connection, and can be prefabricated in the factory, so it can be directly connected through a flange joint on the project site without the need for additional thermal insulation work. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1 This is a structural schematic diagram of the heat-insulating metal flexible connecting pipe disclosed in the utility model;
[0017] Figure 2 for Figure 1 A schematic cross-sectional view showing the internal structure;
[0018] Among them, 1. Metal corrugated tube; 2. Metal woven mesh; 3. Glass fiber tape; 4. Waterproof heat shrink tube; 5. Stainless steel threading tube. 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. People familiar with this technology can easily understand other advantages and functions of the utility model from the contents disclosed in this specification. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0020] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that can be implemented in this utility model, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that can be produced by the utility model and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the utility model. In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model, 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 cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.
[0021] It should also be noted that in the embodiments of the present application, the same figure mark is used to represent the same component or the same part.
[0022] The utility model aims to provide a heat-insulating metal flexible connecting pipe to solve the problems existing in the prior art, so as to improve the convenience of on-site construction while improving the heat-insulating performance of the metal flexible connecting pipe.
[0023] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0024] Please refer to Figure 1 The present embodiment provides a thermal insulation metal flexible connecting pipe, including an inner pipe, the outer circumference of the inner pipe is sequentially covered with a thermal insulation layer, a waterproof layer and a stainless steel threading pipe 5 from the inside to the outside, the thermal insulation layer is tightly wrapped around the outer circumference of the inner pipe, the waterproof layer is tightly fitted to the thermal insulation layer, and there is a gap between the stainless steel threading pipe 5 and the thermal insulation layer.
[0025] The inner tube is a metal flexible connecting tube, which is usually a metal bellows 1. The channel in the metal bellows 1 is a flow channel for the high temperature medium. Furthermore, a metal braided mesh 2 arranged outside the metal bellows 1 may also be included.
[0026] Both ends of the inner tube are provided with chucks, threads or flange joints.
[0027] The insulation layer can be made of different materials according to different temperature resistance requirements. Take the metal flexible connecting pipe with an inner diameter of 40mm as an example:
[0028] If the required temperature is 120°C to 400°C, a glass fiber tape 3 is selected and spirally wound on the outer surface of the pipe with a thickness of 8 to 9 mm, and then a waterproof heat shrink tube 4 is installed outside the insulation layer to waterproof the insulation material.
[0029] If the temperature needs to be tolerated below 120°C, you can choose B1 grade flame retardant rubber and plastic insulation cotton with an inner diameter of 48mm and a wall thickness of 9mm. Wrap the flame retardant rubber and plastic insulation cotton tightly around the metal flexible connecting pipe, and then install 4 waterproof heat shrink tubes outside the insulation layer to waterproof the insulation material.
[0030] Finally, a 304 stainless steel threading tube 5 with a corresponding diameter (such as 75 mm) is sleeved outside the waterproof heat shrink tube 4. The threading tube has good expansion and bending properties and anti-ultraviolet radiation capabilities.
[0031] In solar collector projects, metal flexible pipes are exposed without external insulation. The working temperature of the liquid in the pipe is usually 80-90℃. The outdoor temperature in winter can reach -10-20℃, with a temperature difference of about 100℃. This part of the pipe has serious heat loss. Prefabricating the insulation layer, waterproof layer and stainless steel threading pipe 5 as a protective layer outside the metal flexible pipe can effectively reduce heat loss.
[0032] This embodiment can be prefabricated in a factory and can be directly connected via flange joints at the construction site without the need for additional insulation work.
[0033] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0034] If the present invention discloses or involves components or structures that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connection using bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except where it is obviously impossible to use an one-piece molding process).
[0035] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in the above utility model include states or shapes that are approximate, similar or close thereto.
[0036] Any component provided by the utility model can be assembled from multiple separate components, or can be a separate component manufactured by an integrated molding process.
[0037] Adaptive changes made according to actual needs are all within the protection scope of this utility model.
[0038] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.
[0039] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of the present invention. At the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.
Claims
1. A thermal insulation metal flexible connecting pipe, characterized in that: It comprises an inner tube, the outer circumference of which is sequentially covered with an insulation layer, a waterproof layer and a stainless steel threading tube from inside to outside, the insulation layer tightly covers the outer circumference of the inner tube, the waterproof layer is tightly fitted with the insulation layer, and there is a gap between the stainless steel threading tube and the insulation layer.
2. The thermal insulation metal flexible connecting pipe according to claim 1, characterized in that: The heat-insulating layer is a glass fiber tape spirally wound around the outer periphery of the inner tube.
3. The thermal insulation metal flexible connecting pipe according to claim 1, characterized in that: The thermal insulation layer is made of flame-retardant rubber-plastic thermal insulation cotton tightly wrapped around the outer periphery of the inner tube.
4. The thermal insulation metal flexible connecting pipe according to claim 1, characterized in that: The waterproof layer is a waterproof heat shrink tube.
5. The thermal insulation metal flexible connecting pipe according to claim 1, characterized in that: The inner tube includes a metal bellows as a high-temperature medium flow channel.
6. The thermal insulation metal flexible connecting pipe according to claim 5, characterized in that: The inner tube also includes a metal braided mesh outside the metal corrugated tube.
7. The thermal insulation metal flexible connecting pipe according to any one of claims 1 to 6, characterized in that: Both ends of the inner tube are provided with chucks, threads or flange joints.
8. The thermal insulation metal flexible connecting pipe according to claim 7, characterized in that: The stainless steel threading tube is not fixedly connected to other parts of the pipeline, and the stainless steel threading tube can be telescopically slid outside the waterproof layer.