Electric smelting flange for pipe fitting connection

Abstract

The utility model relates to the technical field of electric melting flanges, and discloses an electric melting flange for pipe fitting connection, which comprises an electric melting sleeve, two ends of the outer surface of the electric melting sleeve are fixedly connected with lead interfaces, the inside of the electric melting sleeve is fixedly connected with a limiting ring, the outer surface of the electric melting sleeve is provided with two observation grooves, and the two observation grooves are connected with the lead interfaces. A liquid storage meter is fixedly connected to the interior of the observation groove, a partition plate is fixedly connected to the interior of the liquid storage meter, the liquid storage meter is filled with observation liquid, and a stabilizing assembly is arranged in the middle of the outer surface of the electric melting sleeve. Due to the trapezoidal design of the stabilizing seat and the arrangement of the reinforcing holes, the stability of the flange and the pipeline in the connecting process is enhanced, particularly under the soft soil texture or uneven environment, the stability in the welding process is further improved through insertion of the supporting columns, and the accuracy and the welding quality of the whole welding process are improved.

Description

Technical Field

[0001] This utility model relates to the field of electrofusion flange technology, and in particular to an electrofusion flange for pipe fitting connection. Background Technology

[0002] Electrofusion flanges are widely used in piping systems, especially in the connection of thermoplastic pipes. With the diversification of pipe materials and the continuous development of pipe connection methods, traditional welding, threaded connections, and flange connections can no longer meet some special needs, especially in situations requiring high connection quality and complex environments. The emergence of electrofusion flange technology has solved some of the problems faced by traditional connection methods, such as uneven welding, inconvenient installation, and insufficient connection strength.

[0003] Electrofusion flanges use an electrothermal element to heat the electrofusion sleeve, causing it to fuse with the pipe surface, thus forming a high-strength, reliable connection. The working principle of electrofusion flanges is simple and easy to operate; simply place the electrofusion sleeve onto the pipe, connect the power supply, and set the appropriate temperature and time to quickly complete the pipe connection. Due to their high connection strength, corrosion resistance, and aging resistance, as well as their easy installation, electrofusion flanges are widely used in water supply, drainage, natural gas, petroleum, and chemical industries.

[0004] However, traditional electrofusion flanges still present certain technical challenges in specific environments, such as inaccurate pipe connections, uneven temperature during welding, and insufficient stability during the connection process. Therefore, further optimizing the design of electrofusion flanges, enhancing the stability of the welding process, and improving the temperature control and support system during welding have become urgent technical problems to be solved in the field of pipe fittings connections. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an electrofusion flange for pipe connection, which aims to improve the problems of inaccurate temperature control, unstable connection and complicated installation in the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an electrofusion flange for pipe connection, comprising an electrofusion sleeve, wherein wire interfaces are fixedly connected to both ends of the outer surface of the electrofusion sleeve, a limit ring is fixedly connected inside the electrofusion sleeve, two observation grooves are formed on the outer surface of the electrofusion sleeve, a liquid reservoir is fixedly connected inside the observation groove, a partition plate is fixedly connected inside the liquid reservoir, the liquid reservoir is filled with observation liquid, and a stabilizing component is provided in the middle of the outer surface of the electrofusion sleeve.

[0007] As a further description of the above technical solution: the stabilizing component includes two annular grooves, which are formed in the middle of the outer surface of the electrofusion sleeve, and a stabilizing seat is slidably connected inside the annular grooves.

[0008] As a further description of the above technical solution: inside the electrofusion sleeve, the regions at both ends away from the limiting ring are set as connection areas.

[0009] As a further description of the above technical solution: on the outer surface of the electrofusion sleeve, two observation slots are symmetrically arranged outside the connection area.

[0010] As a further description of the above technical solution: a small hole is provided at the center of the partition plate, penetrating the partition plate.

[0011] As a further description of the above technical solution: the stabilizing seat is trapezoidal and symmetrically distributed on both sides of the axis of the electrofusion sleeve.

[0012] As a further description of the above technical solution: reinforcement holes are provided on both sides of the edge of the stabilizing base.

[0013] As a further description of the above technical solution: a protective sleeve is slidably connected to the upper end of the wire interface.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the electrofusion sleeve and the limiting ring ensure a tight connection between the pipeline and the electrofusion flange, achieving a stable welding effect during the heating process. Furthermore, the design of the observation tank and the liquid storage gauge allows users to monitor the temperature changes during the welding process in real time, ensuring accurate control of the welding temperature and avoiding poor welding quality caused by excessively high or low temperatures. This ensures the smooth progress of the entire welding process, thereby improving the reliability and safety of the pipeline connection.

[0016] 2. The trapezoidal design of the stabilizing base and the setting of the reinforcing holes in this utility model enhance the stability of the flange and the pipeline during the connection process. Especially in soft soil or uneven environments, the insertion of the support column further improves the stability during the welding process, thereby improving the accuracy and quality of the entire welding process. Attached Figure Description

[0017] Figure 1 This is a side view of an electrofusion flange for pipe connection proposed in this utility model;

[0018] Figure 2 This is a diagram illustrating an electrofusion flange for pipe connection proposed in this utility model.

[0019] Figure 3This is a schematic diagram of a liquid storage gauge in an electrofusion flange for pipe connection proposed in this utility model.

[0020] Legend:

[0021] 1. Electrofusion sleeve; 2. Wire interface; 201. Protective sleeve; 3. Limiting ring; 4. Observation groove; 5. Liquid reservoir; 6. Divider plate; 601. Small hole; 7. Observation liquid; 8. Stabilizing component; 801. Annular groove; 802. Stabilizing base; 803. Reinforcing hole; 9. Connection area. Detailed Implementation

[0022] 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.

[0023] Reference Figures 1-3 An embodiment of this utility model provides an electrofusion flange for pipe connection, including an electrofusion sleeve 1. Wire interfaces 2 are fixedly connected to both ends of the outer surface of the electrofusion sleeve 1. Limiting rings 3 are fixedly connected inside the electrofusion sleeve 1. Two observation grooves 4 are opened on the outer surface of the electrofusion sleeve 1. Liquid reservoirs 5 are fixedly connected inside the observation grooves 4. Dividers 6 are fixedly connected inside the liquid reservoirs 5. Observation liquid 7 is filled inside the liquid reservoirs 5. A stabilizing component 8 is provided in the middle of the outer surface of the electrofusion sleeve 1.

[0024] Inside the electrofusion sleeve 1, the areas at both ends away from the limiting ring 3 are set as the connection area 9.

[0025] On the outer surface of the electrofusion sleeve 1, two observation slots 4 are symmetrically arranged outside the connection area 9.

[0026] A small hole 601 is provided at the center of the partition plate 6, which penetrates the partition plate 6.

[0027] Specifically, during the operation of the electrofusion flange, the electrofusion sleeve 1 serves to provide heating and maintain a stable connection. Heating is achieved through the electric heating element within the electrofusion sleeve 1, causing the plastic material on the inner wall of the sleeve and the outer surface of the pipe to gradually melt, forming a molten ring for connection. The wire interface 2 is used to transmit current to the heating element within the electrofusion sleeve 1, heating it to the required temperature. The limiting ring 3 ensures precise alignment between the pipe and the electrofusion sleeve 1, preventing poor contact due to misalignment during welding. The observation slot 4 provides a window for external observation, allowing the user to visually observe the changes in the observation liquid 7 within the reservoir 5, thus reflecting temperature fluctuations during the heating process. The observation liquid 7 in the reservoir 5 gradually vaporizes as the temperature rises, providing real-time feedback on temperature changes and helping to determine whether the welding has reached the expected temperature. The partition plate 6 divides the reservoir 5 into two areas, ensuring controlled flow of the observation liquid 7 and stable reaction under the guidance of the orifice 601, thus improving the accuracy of temperature change observation. The stabilizing component 8 provides stable support, preventing any displacement of the electrofusion flange and pipeline during the heating process, ensuring the stability and accuracy of the welded connection. The connection zone 9 is located within the electrofusion sleeve 1, away from both ends of the limiting ring 3. This zone ensures proper fitting and welding of the pipeline to the sleeve by providing adequate connection space. In this process, all components work together to ensure that the electrofusion flange maintains the required temperature, pressure, and stability during heating, welding, and cooling, ultimately achieving a reliable pipeline connection.

[0028] The stabilizing component 8 includes two annular grooves 801, which are formed in the middle of the outer surface of the electrofusion sleeve 1, and a stabilizing seat 802 is slidably connected inside the annular grooves 801.

[0029] The stabilizing seat 802 is trapezoidal and symmetrically distributed on both sides of the axis of the electrofusion sleeve 1.

[0030] The stabilizing base 802 has reinforcement holes 803 on both sides of its edge.

[0031] The upper end of the wire interface 2 is slidably connected with a protective sleeve 201.

[0032] Specifically, the stabilizing component 8 provides support and stability, ensuring proper alignment of the flange and pipeline during electrofusion flange operation and preventing displacement or misalignment due to gravity or temperature changes during heating or cooling. The stabilizing component 8 consists of two annular grooves 801 and a stabilizing seat 802. The annular grooves 801 are located in the middle of the outer surface of the electrofusion sleeve 1, while the stabilizing seat 802 slides within the annular grooves 801 to adjust its position and ensure stability of the flange and pipeline during welding. The stabilizing seat 802 is trapezoidal and symmetrically distributed on both sides of the axis of the electrofusion sleeve 1. This design provides uniform support and enhances the stability of the electrofusion flange. Reinforcing holes 803 on both sides of the edge of the stabilizing seat 802 provide reinforcement, allowing support columns to be driven into soft soil or uneven environments, further improving stability during welding and ensuring smooth fusion. The protective sleeve 201 that is slidably connected to the upper end of the wire interface 2 provides protection for the wire interface 2, preventing damage to the wire interface 2 due to external factors during the welding process, thereby ensuring that the entire system can work normally during the welding process.

[0033] Working Principle: During use, first remove the oxide layer, oil, and impurities from the pipe joint with sandpaper or a scraper to ensure a clean and rough surface, enhancing welding adhesion. The scraping length should be the length of the connection area 9. After scraping, place the electrofusion sleeve 1 onto the pipe. Then, connect the two ends of the electrofusion welding machine's wires to the two wire interfaces 2 of the electrofusion sleeve 1. Start the electrofusion welding machine and input the preset welding parameters, such as voltage and time, according to the flange specifications (diameter, wall thickness). The heating wire inside the electrofusion sleeve 1 heats up, gradually melting the plastic material on the inner wall of the sleeve 1 and the outer surface of the pipe, forming a molten ring. After welding, disconnect the power supply, keeping the electrofusion sleeve 1 and the pipe stationary, allowing the molten part to cool and solidify naturally. During the heating process, the two liquid reservoirs 5 outside the connection area 9 are filled with... As the temperature rises, the observation liquid 7 (which can be water, isopropanol, cyclohexane, dichloromethane, or ethanol) gradually vaporizes. The degree of vaporization of the observation liquid 7 is displayed by the transparent liquid level gauge 5, which indicates the temperature change during the electrofusion process. During the cooling stage, the vaporized observation liquid 7 gradually liquefies until it is the same as before heating, which means the welding is complete. In addition, the flange and the pipe need to be kept stationary during cooling. Since the pipe fitting and the electrofusion sleeve 1 are relatively smooth in shape and the connection between the two is easily misaligned due to gravity, the stabilizing seat 802 on the outside of the electrofusion sleeve 1 can provide necessary support for the pipe fitting and the electrofusion sleeve 1. The stabilizing seat 802 is trapezoidal in shape and symmetrically distributed on both sides of the electrofusion sleeve 1. When welding in a soft tunnel, steel support columns can be driven into the reinforcement hole 803 to enhance the stability of the welding.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electrofusion flange for pipe fitting connection, comprising an electrofusion sleeve (1), characterized in that: The outer surfaces of the electrofusion sleeve (1) are fixedly connected to wire interfaces (2) at both ends. The inner surface of the electrofusion sleeve (1) is fixedly connected to a limit ring (3). The outer surface of the electrofusion sleeve (1) has two observation slots (4). The inner surface of the observation slots (4) is fixedly connected to a liquid reservoir (5). The inner surface of the liquid reservoir (5) is fixedly connected to a partition plate (6). The inner surface of the liquid reservoir (5) is filled with observation liquid (7). The middle part of the outer surface of the electrofusion sleeve (1) is provided with a stabilizing component (8).

2. The electrofusion flange for pipe connection according to claim 1, characterized in that: The stabilizing component (8) includes two annular grooves (801), which are formed in the middle of the outer surface of the electrofusion sleeve (1), and a stabilizing seat (802) is slidably connected inside the annular grooves (801).

3. The electrofusion flange for pipe connection according to claim 1, characterized in that: Inside the electrofusion sleeve (1), the regions at both ends away from the limiting ring (3) are set as connection areas (9).

4. The electrofusion flange for pipe connection according to claim 3, characterized in that: On the outer surface of the electrofusion sleeve (1), two observation slots (4) are symmetrically arranged outside the connection area (9).

5. The electrofusion flange for pipe connection according to claim 1, characterized in that: A small hole (601) is provided at the center of the partition plate (6) to penetrate the partition plate (6).

6. The electrofusion flange for pipe connection according to claim 2, characterized in that: The stabilizing base (802) is trapezoidal and symmetrically distributed on both sides of the axis of the electrofusion sleeve (1).

7. The electrofusion flange for pipe connection according to claim 2, characterized in that: The stabilizing base (802) has reinforcement holes (803) on both sides of its edge.

8. The electrofusion flange for pipe connection according to claim 1, characterized in that: The upper end of the wire interface (2) is slidably connected to a protective sleeve (201).

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