Socket flexible connection plastic-coated composite heat preservation steel pipe
By using plastic-coated composite thermally insulated steel pipes with flexible connections in the heating and water supply pipelines, the problems of rust pollution in the pipeline, slow construction of welding connections and prone to aging and leaking, achieving better positioning effect, sealing performance and thermal insulation effect.
Patent Information
- Application Number
- CN202421773363.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-07-25
AI Technical Summary
Existing heating and water supply pipes are prone to rust and contamination after long-term use. The welding connection method is slow to construct, high cost, and prone to aging and leaking, and gaps are easily generated at the connections that affect the insulation effect.
The plastic-coated composite thermal insulation steel pipe with flexible connection is adopted. Through the socket, sealing ring and socket design of the inner and outer plastic-coated steel pipe, flexible connection is achieved, and the polyurethane insulation layer and polyethylene outer sheath are coated on the outside to improve the protection effect.
It improves the positioning effect and sealing performance at the connection, extends the service life of the steel pipe, reduces construction costs and leakage risks, and provides better insulation and transmission effects.
Smart Images
Figure CN222760486U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of inner and outer plastic coated steel pipes for water supply and heat insulation steel pipes, in particular to a socket-and-spigot flexible connection plastic coated composite insulation steel pipe. Background Art
[0002] Pipes are often used to transport liquids, especially for heating and water supply pipes. After long-term use, existing insulated pipes will rust inside the pipes, causing water supply pollution and reducing the service life of steel pipes. In addition, there is welding technology for pipeline connections, which is slow to construct and costly. After a certain number of years, welds are prone to aging and leakage. After long-term use, gaps are easily generated at the joints, affecting the support positioning and transmission effects of the insulated pipes. Utility Model Content
[0003] 1. Technical issues to be solved
[0004] In view of the deficiencies in the prior art, the utility model provides a socket-and-spigot flexible connection plastic-coated composite insulated steel pipe, which has the characteristics of improving the positioning effect of the connection, having a better protection effect, and providing a better connection effect at the connection.
[0005] (II) Technical solution
[0006] To achieve the above purpose, the utility model provides the following technical solutions: a socket-and-spigot flexible connection plastic-coated composite insulation steel pipe, comprising inner and outer plastic-coated steel pipes, a polyurethane insulation layer and a polyethylene outer sheath;
[0007] The inner and outer plastic-coated steel pipes include a socket, a sealing ring and a socket. Several inner and outer plastic-coated steel pipes are connected. The connecting parts of the two connected inner and outer plastic-coated steel pipes are respectively provided with a socket and a socket. One end of the inner and outer plastic-coated steel pipe is provided with a socket, the socket is inserted into the socket, a sealing ring is provided on the inner wall of the socket, a cavity corresponding to the sealing ring is provided inside the socket, and an inwardly bent edge is provided at the end of the socket.
[0008] Preferably, the outer side of the inner and outer plastic-coated steel pipe is coated with a polyurethane insulation layer and a polyethylene outer sheath, and the polyethylene outer sheath is arranged outside the polyurethane insulation layer.
[0009] Preferably, the inner wall of the socket is provided with a sharp corner, and the sharp corner is located in the middle of the sealing ring, and the sharp corner can press the middle of the sealing ring.
[0010] Preferably, the end of the spigot inserted into the socket is provided with a necking.
[0011] Preferably, the straight pipe area of the inner and outer plastic-coated steel pipes is flared at the turning point toward the socket.
[0012] Preferably, the straight pipe area of the inner and outer plastic-coated steel pipes is expanded toward the turning area of the socket.
[0013] (III) Beneficial effects
[0014] Compared with the prior art, the utility model provides a socket-and-spigot flexible connection plastic-coated composite insulation steel pipe, which has the following beneficial effects:
[0015] The socket-and-spigot flexible connection plastic-coated composite insulated steel pipe adopts a socket-and-spigot flexible connection between the inner and outer plastic-coated steel pipes. The sealing ring in the socket is sealed. The rubber ring material is resistant to high temperature and corrosion and has a long service life. Compared with welding, it is not easy to be corroded and cause pipeline leakage. This technology is fast to install and saves costs. The folded edge setting at the end of the socket further limits the position of the sealing ring, improves the positioning effect of the sealing ring, seals the connection between the spigot and the socket, and provides a better connection effect at the connection. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the structure of the utility model.
[0017] Markings in the attached figure: 1. Inner and outer plastic-coated steel pipes; 2. Polyurethane insulation layer; 3. Polyethylene outer sheath; 4. Plug; 5. Sealing ring; 6. Socket. DETAILED DESCRIPTION
[0018] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] Example:
[0020] See also Figure 1 A socket-and-spigot flexible connection plastic-coated composite insulated steel pipe comprises inner and outer plastic-coated steel pipes 1, a polyurethane insulation layer 2 and a polyethylene outer sheath 3.
[0021] The inner and outer plastic-coated steel pipes 1 include a spigot 4, a sealing ring 5 and a socket 6. Several inner and outer plastic-coated steel pipes 1 are connected, and the connection points of the two connected inner and outer plastic-coated steel pipes 1 are respectively provided with a spigot 4 and a socket 6. The socket 4 is provided at one end of the inner and outer plastic-coated steel pipe 1, and the spigot 4 is inserted into the socket 6. The inner wall of the socket 6 is provided with a sealing ring 5. The socket 6 is provided with a cavity corresponding to the sealing ring 5. The end of the socket 6 is provided with a folded edge bent inwardly. The sealing ring 5 is a T-shaped sealing ring. The inner and outer plastic-coated steel pipes 1 are plastic-coated inside and outside. The inner and outer plastic-coated steel pipes 1 are connected by a socket-shaped flexible connection. The sealing ring 5 in the socket 6 is sealed. The rubber ring material is resistant to high temperature and corrosion and has a long service life. Compared with welding, it is not easy to corrode and cause pipeline leakage. This technology is fast to install and saves costs. The folded edge setting at the end of the socket 6 further limits the position of the sealing ring 5, improves the positioning effect of the sealing ring 5, seals the connection between the spigot 4 and the socket 6, and provides a better connection effect at the connection.
[0022] The outside of the inner and outer plastic coated steel pipe 1 is coated with a polyurethane insulation layer 2 and a polyethylene outer sheath 3. The polyethylene outer sheath 3 is arranged on the outside of the polyurethane insulation layer 2. The inner and outer plastic coated steel pipe 1 is first treated with an inner and outer epoxy powder coating process for anti-corrosion, which can not only ensure the water quality, but also increase the service life of the steel pipe. The polyurethane insulation layer 2 and the polyethylene outer sheath 3 provide better protection effect in processing.
[0023] The inner wall of the socket 6 is provided with a sharp corner, which is located in the middle of the sealing ring 5. The sharp corner can press the middle of the sealing ring 5. The shape of the sharp corner further limits the position of the sealing ring 5, thereby improving the positioning effect of the sealing ring 5.
[0024] The end of the socket 4 inserted into the socket 6 is provided with a necking, and the shape of the necking facilitates the transmission of the transmitted liquid to the middle of the socket 6.
[0025] The straight pipe area of the inner and outer plastic-coated steel pipes 1 is expanded at the turning point toward the socket 4 . The expanded shape is more conducive to the transmission of the liquid inside the inner and outer plastic-coated steel pipes 1 to the inside of the socket 4 .
[0026] The straight pipe area of the inner and outer plastic coated steel pipes 1 is expanded at the turning area to the socket 6. The expansion of the inner and outer plastic coated steel pipes 1 at the turning point to the socket 6 can limit the position of the sealing ring 5, and make the expanded inner wall and the inner wall of the socket 4 more effectively connected, providing a better transmission effect.
[0027] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.
[0028] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).
[0029] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.
[0030] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A socket-and-spigot flexible connection plastic-coated composite insulation steel pipe, characterized in that: It comprises inner and outer plastic-coated steel pipes (1), a polyurethane insulation layer (2) and a polyethylene outer sheath (3); The inner and outer plastic coated steel pipes (1) include a spigot (4), a sealing ring (5) and a socket (6). A plurality of inner and outer plastic coated steel pipes (1) are connected, and the connection points of the two connected inner and outer plastic coated steel pipes (1) are respectively provided with a spigot (4) and a socket (6). The spigot (4) is provided at one end of the inner and outer plastic coated steel pipes (1), and the spigot (4) is inserted into the socket (6). The inner wall of the socket (6) is provided with a sealing ring (5), and the interior of the socket (6) is provided with a cavity corresponding to the sealing ring (5). The end of the socket (6) is provided with a folded edge bent inward.
2. The socket-and-spigot flexible connection plastic-coated composite insulation steel pipe according to claim 1, characterized in that: The outer surface of the inner and outer plastic-coated steel pipe (1) is coated with a polyurethane insulation layer (2) and a polyethylene outer sheath (3), and the polyethylene outer sheath (3) is arranged outside the polyurethane insulation layer (2).
3. The socket-and-spigot flexible connection plastic-coated composite insulation steel pipe according to claim 1, characterized in that: The inner wall of the socket (6) is provided with a sharp corner, which is located in the middle of the sealing ring (5) and can press the middle of the sealing ring (5).
4. The socket-and-spigot flexible connection plastic-coated composite insulation steel pipe according to claim 1, characterized in that: The end of the spigot (4) inserted into the socket (6) is provided with a constriction.
5. The socket-and-spigot flexible connection plastic-coated composite insulation steel pipe according to claim 1, characterized in that: The straight pipe area of the inner and outer plastic coated steel pipes (1) is in a flared shape at the turning point toward the insertion opening (4).
6. The socket-and-spigot flexible connection plastic-coated composite insulation steel pipe according to claim 1, characterized in that: The straight pipe area of the inner and outer plastic coated steel pipe (1) is expanded toward the turning area of the socket (6).