Large-diameter electric smelting connecting ring

Abstract

The utility model discloses a large-caliber electric melting connecting ring which comprises a ring body and a resin strip, an installation groove used for containing the resin strip is formed in the inner side of the ring body, the resin strip is embedded and tightly installed in the installation groove, and the appearance of the resin strip is matched with the shape of the installation groove. According to the connecting ring, the mounting groove used for containing the resin strip is formed in the ring body, the coplanar structural design that the outer surface of the resin strip is flush with the inner surface of the ring body is adopted, smoothness and flatness of the connecting inner wall are ensured, the limiting ring and the ring body are integrally formed, and the accurate positioning function is provided in the mounting process; according to the connecting ring, through the circular ring-shaped or T-shaped structural design of the ring body, the connecting ring can meet the requirements of various connecting scenes of large-diameter pipelines. The annular structure is mainly used for butt joint connection of two sections of pipelines, and high strength and high sealing performance of a linear pipeline connector are guaranteed. And the T-shaped structure is used for end-to-end connection of the end part of the pipeline, so that the tail end of the pipeline system can be sealed conveniently or other special purposes can be expanded and applied conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline technical field, concretely is a large -caliber electric melting connection ring. BACKGROUND

[0002] In pipeline engineering, the selection of connection mode has a crucial influence on the safety, sealing and long-term stability of the pipeline system. Traditional large-diameter pipeline connection technology mainly includes mechanical connection, flange connection and welding connection. These traditional methods have certain applicability under certain conditions, but also have obvious limitations, are easily affected by pressure fluctuation and lead to loosening or leakage; the flange connection structure is complex, the cost is higher, and there is a risk of sealing failure under high pressure or high temperature working condition; although the welding connection can provide strong connection strength, the construction requirement is high, the operation is complex, and it is difficult to quickly disassemble during maintenance.

[0003] Through retrieval, a large-diameter electric melting pipe fitting connector is disclosed in Chinese patent document (application number: 202010372719.3, publication number: CN111396672A), which comprises a connecting pipe, the connecting pipe comprises a sleeve, an insertion slot is formed in the upper end of the sleeve, a connecting end is fixedly installed inside the lower end of the insertion slot, a fixed curved surface is formed on the surface of the sleeve, and an electric heating wire is fixedly installed inside the sleeve. Although this connector also adopts the electric melting connection scheme, the structure is complex, the number of components is large, the precision requirements for processing and installation are high, the production cost and use difficulty are increased. At the same time, the design of the sleeve and the insertion slot in this patent is relatively traditional, and the flexibility is limited in pipeline butt joint or branch connection, which cannot meet the efficient and easy-to-operate connection requirements of large-diameter pipelines. UTILITY MODEL CONTENTS

[0004] In view of the problems existing in the prior art, the purpose of the present application is to provide a large-diameter electric melting connection ring.

[0005] The utility model can be realized by the following technical schemes:

[0006] A large-diameter electric melting connection ring, characterized by comprising a ring body and a resin strip, an installation groove for accommodating the resin strip is formed in the inner side of the ring body, the resin strip is embedded and tightly installed in the installation groove, and the outer shape of the resin strip matches the shape of the installation groove.

[0007] Preferably, the ring body can be a circular ring structure or a T-shaped structure.

[0008] By the above technical solution, the circular ring structure and T-shaped structure of the ring body can adapt to different pipe connection requirements, providing higher adaptability and flexibility. The circular ring structure is suitable for the linear butt joint connection of two pipe sections, and its design can ensure high strength and high sealing performance at the pipe butt joint, while the limiting ring inside the ring body ensures accurate connection, suitable for a wide range of fluid conveying scenarios. The T-shaped structure is suitable for end processing of the pipe system.

[0009] Preferably, the cross-sectional shape of the mounting groove opened on the inner side of the ring body includes a rectangle or a trapezoid.

[0010] By the above technical solution, the mounting groove on the inner side of the ring body can better match the resin strip, achieving firm embedding and installation, while avoiding looseness or installation deviation caused by shape mismatch. This design can effectively improve the stability and sealing performance of the connection, providing more reliable structural support for the electrofusion connection of large-diameter pipes.

[0011] Preferably, a limiting ring is arranged inside the ring body, and the limiting ring is integrally formed with the inner surface of the ring body.

[0012] By the above technical solution, the limiting ring is used to limit the connecting piece placed therein, which can effectively prevent the connecting piece from shifting or deviating during installation and use, ensuring the accuracy and stability of the connection. Since the limiting ring and the inner surface of the ring body are designed in an integral structure, the connection gap between parts is reduced, which not only significantly improves the overall sealing performance, but also avoids the stress concentration problem that may exist in traditional split design, improving the strength and durability of the structure.

[0013] Preferably, grooves are uniformly and equally spaced on the resin strip, and copper wires are wound on the resin strip, with the copper wires embedded in the grooves.

[0014] By the above technical solution, the grooves on the resin strip are uniformly distributed and designed with equal spacing, which can accurately position the winding position of the copper wire, ensuring the alignment of the copper wire, thereby improving the uniformity during electrofusion heating. The copper wire is embedded in the groove, making it more tightly combined with the resin strip, preventing the copper wire from moving or loosening during installation or use, and enhancing the stability of the structure. This design not only effectively improves the conductivity efficiency during electrofusion connection, but also ensures uniform heat transfer, thereby achieving a more firm and reliable connection between the resin strip and the ring body.

[0015] Preferably, after the resin strip is embedded in the mounting groove, the outer surface of the resin strip is flush with the reference surface of the inner surface of the ring body, forming a coplanar structure.

[0016] By the technical scheme, the resin strip and the inner surface of the ring body are kept on the same reference surface, the inner wall is smooth, the situation that the outer surface of the resin strip is protruded or recessed is avoided, and the sealing of the connecting surface and the uniformity of welding are ensured.

[0017] Preferably, a hole is arranged on the ring body, a terminal post is arranged in the hole, and the terminal post is connected with the copper wire on the resin strip.

[0018] By the technical scheme, the hole on the ring body provides a fixed position for the installation of the terminal post, the stability of the terminal post and the reliability of the circuit connection are ensured. The terminal post is directly connected with the copper wire on the resin strip, the conductive path of the ring body is more clear and simple, and the current conduction problem caused by poor contact or complex path is avoided. The terminal post is arranged, and the external power supply can be quickly connected during the electric melting operation, so that the use efficiency and the connection quality of the electric melting connecting ring are improved. The cooperation design of the hole and the terminal post not only simplifies the structure, but also enhances the strength and durability of the whole ring body, and ensures the long-term stability of the ring body under high pressure and complex working conditions.

[0019] Preferably, an inclined guide angle is arranged at the inlet part of the ring body, and the inclined guide angle gradually transitions inward along the inner surface of the ring body to form a conical structure.

[0020] By the technical scheme, the inclined guide angle design of the inlet part of the ring body helps the smooth introduction of the connecting piece during installation, reduces the installation difficulty or damage risk caused by position deviation or uneven stress, and the conical structure formed by the inclined guide angle can effectively guide the accurate alignment of the connecting piece, reduce the friction force in the installation process, and improve the construction efficiency and installation precision. The gradual transition design ensures the smooth contact between the ring body and the connecting piece, avoids the stress concentration problem caused by the structure mutation, and improves the durability and service life of the whole connecting ring.

[0021] Compared with the prior art, the utility model has the following advantages:

[0022] 1. The large-diameter electric melting connecting ring is provided with the installation groove for accommodating the resin strip in the ring body, the coplanar structure design that the outer surface of the resin strip is flush with the inner surface of the ring body is adopted, the smooth and flat inner wall of the connection is ensured, the limit ring is designed in an integral forming mode with the ring body, accurate positioning function is provided during the installation process, and deviation or misalignment of the connecting piece is prevented.

[0023] 2. The large-diameter electrically fused connecting ring can meet the needs of various connection scenarios of large-diameter pipelines through the circular ring or T-shaped structure design of the ring body. The circular ring structure is mainly used for butt joint connection of two pipeline sections, ensuring the high strength and high sealing performance of the straight pipeline interface; and the T-shaped structure is used for the end connection of the pipeline end, facilitating the end closure of the pipeline system or the expansion application of other special purposes. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 is a three-dimensional schematic view of a circular ring structure ring body of the utility model.

[0025] Fig. 2 is a three-dimensional schematic view of a T-shaped structure ring body of the utility model.

[0026] Fig. 3 is a schematic view of a resin strip of the utility model.

[0027] In the figure: 101, ring body; 102, resin strip; 103, limiting ring; 104, terminal post; 201, copper wire. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0029] Please refer to Figs. 1 to 3 The utility model provides the following technical solutions:

[0030] Embodiment 1

[0031] The large-diameter electrically fused connecting ring of the utility model adopts a circular ring structure and is mainly used for straight butt joint connection of two pipeline sections. The inner side of the ring body 101 is provided with a mounting groove for accommodating the resin strip 102, the resin strip 102 is embedded and tightly mounted in the mounting groove, the outer shape of the resin strip 102 matches the cross-sectional shape of the mounting groove, the outer surface is flush with the reference surface of the inner surface of the ring body 101, forming a smooth transition interface. The resin strip 102 is uniformly provided with a groove, the copper wire 201 is embedded in the groove, and the copper wire 201 is connected with an external power supply through the terminal post 104.

[0032] During installation, the two sections of pipe to be connected are inserted into the two ends of the electrically fused connection ring. The ring body 101 is provided with an inclined guide angle at the inlet position, which can effectively guide the pipe end to smoothly enter the inside of the ring body 101, avoiding deviation and interference during pipe insertion. After the pipe is inserted in place, the end thereof is in contact with the limiting ring 103 inside the ring body 101, and the limiting ring 103 plays a role of accurate positioning, ensuring that the pipe is in the correct position and avoiding the problems of insertion being too deep or not in place.

[0033] After the connection is completed, the power supply is connected to the copper wire 201 through the terminal post 104, and the current is conducted along the copper wire 201 to generate heat. Since the copper wire 201 is embedded in the groove of the resin strip 102, the heat is directly conducted to the resin strip 102, causing the resin strip 102 to quickly heat and melt. After the resin strip 102 melts, it is combined with the outer surface of the pipe and the inner wall of the groove of the ring body 101, and the molten material flows to fill all the tiny gaps, forming a tight sealing interface.

[0034] After the melting process is completed, the power supply is cut off, and the resin strip 102 gradually cools and solidifies, forming an integrated high-strength connection structure with the pipe and the ring body 101. The entire inner wall is designed to be flush with the inner surface of the ring body 101, forming a smooth inner wall transition, reducing the resistance and turbulence of fluid transport. The circular ring structure ensures the stability of the connection of the two sections of pipe under high pressure and can maintain good sealing performance for a long time.

[0035] Example 2:

[0036] The large-diameter electrically fused connection ring of the utility model adopts a T-shaped structure and is mainly used for the end of a pipeline system. The inner side of the T-shaped ring body is also provided with a mounting groove for embedding the resin strip 102, and the copper wire 201 is embedded in the uniformly distributed grooves on the resin strip 102. The copper wire 201 is connected to the external power supply through the terminal post 104. One end of the T-shaped ring body is a pipe insertion end, and the other end is an edge end.

[0037] In the scenario of closed connection of the pipe end, the pipe end to be closed is inserted into the inlet end of the T-shaped ring body. The inclined guide angle design at the inlet position guides the pipe to smoothly insert and accurately position under the action of the limiting ring 103, avoiding sealing problems caused by improper pipe position.

[0038] After the connection is in place, the power supply is connected through the terminal post 104, and the current is conducted to the copper wire 201. After being electrified, the copper wire 201 quickly generates heat, causing the resin strip 102 to heat and melt. In the molten state, the resin strip 102 is tightly combined with the outer surface of the pipe and the inner wall of the mounting groove of the ring body. For closed end connection, the resin strip 102 completely fills all the gaps of the closed end after melting, forming a high-strength seal.

[0039] After the welding is completed, the power is cut off, the resin strip 102 is cooled and solidified, and the pipeline, the ring body and the resin strip 102 are combined into an integrated body, so that the connection part has high strength and high sealing performance.

[0040] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the purpose of facilitating the description of 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.

[0041] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0042] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A large-bore electrofusion coupling ring, characterised in that, The ring body (101) is internally provided with a limiting ring (103) which is integrally formed with the inner surface of the ring body (101). The ring body (101) can be in a circular ring structure or a T-shaped structure. The ring body (101) is internally provided with a limiting ring (103) which is integrally formed with the inner surface of the ring body (101). The outer surface of the resin strip (102) is flush with the reference surface of the inner surface of the ring body (101) after being embedded in the installation groove, forming a coplanar structure.

2. A large diameter electrofusion coupling ring according to claim 1, characterised in that: The cross-sectional shape of the installation groove formed on the inner side of the ring body (101) includes a rectangle or a trapezoid.

3. A large diameter electrofusion coupling ring according to claim 1, wherein: The resin strip (102) is uniformly and equidistantly provided with a groove, and a copper wire (201) is wound on the resin strip (102) and embedded in the groove.

4. A large diameter electrofusion coupling ring according to claim 1, wherein: The ring body (101) is provided with a hole, and a wiring post (104) is arranged in the hole and connected with the copper wire (201) on the resin strip (102).

5. A large diameter electrofusion coupling ring according to claim 1, wherein: The inlet part of the ring body (101) is provided with an inclined guide angle which gradually transitions inward along the inner surface of the ring body (101) and forms a conical structure.

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