Integrated multifunctional electric smelting pipe fitting

Abstract

The integrated multifunctional electric melting pipe fitting comprises an electric melting pipe body, binding posts are arranged at the two ends of the outer wall of the electric melting pipe body correspondingly, an electric heating wire component and an electric melting insertion limiting device are arranged at the two ends of the inner wall of the electric melting pipe body correspondingly, and the electric heating wire component is electrically connected with the binding posts; an electric melting sleeve pipe fitting communicated with an inner cavity of the electric melting pipe body is arranged on the outer wall of the electric melting pipe body, the temperature sensor is connected with the inner cavity of the electric melting sleeve pipe fitting in a matched and inserted mode through a sensor sleeve arranged outside a probe of the temperature sensor, and a circle of fastening steel ring is arranged on the outer wall of the electric melting sleeve pipe fitting; the temperature sensor is integrally installed on the electrofusion pipe body, so that the electrofusion pipe fitting has the temperature measuring function of detecting and recording the temperature change of a medium in a pipeline, in the pipeline installation process, the operation of independently installing the temperature sensor is omitted, only the temperature sensor probe needs to be detached when the sensor is maintained and replaced, the maintenance cost is reduced, and the maintenance efficiency is improved. And the integration degree of the heat supply system is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipe connecting pieces, in particular to an integrated multifunctional electrofusion pipe piece capable of being applied in a heat supply pipeline. BACKGROUND

[0002] An electrofusion pipe piece refers to a plastic pipe fitting that can be connected by melting due to the temperature generated by electric current, and its material can be polyethylene (PE), polybutylene (PB) or polypropylene (PPR) and the like. PE electrofusion pipe pieces are widely used in water pipes, gas pipeline systems and the like. According to the different materials, PE can be divided into different grades such as PE80, PE100 and the like. PE pipe materials and pipe pieces have advantages in corrosion resistance, flexibility and processing performance. PB electrofusion pipe pieces are used in hot water supply systems and have high heat resistance, which can be used in heating systems or hot water pipelines and the like. PPR electrofusion pipe pieces are used in hot and cold water pipeline systems and have good heat resistance and pressure resistance.

[0003] In the connection technology of plastic pipelines, electrofusion pipe piece welding technology is currently a commonly used connection method due to its convenient on-site installation, high standardization of operation, reliable performance and the like. The working principle of electrofusion pipe piece welding is that, after the electrofusion pipe piece is powered by using an electrofusion welding machine, the heat generated by the electric resistance wire in the electrofusion pipe piece and the expansion force thereof are used to melt and connect the outer wall of the pipe material and the electrofusion pipe piece together. Taking a high-density polyethylene (PE) electrofusion pipe piece as an example for illustration, the high-density polyethylene electrofusion pipe piece is a pipe connecting piece with an internal embedded electric heating melting resistance wire. A group of electric resistance wires are distributed in two ring belt areas at both ends inside the pipe piece. After the two ends are inserted into the butt joint pipe, the PE electrofusion pipe piece resistance wire is powered to be heated, reaches the PE material melting temperature interval and maintains for a period of time, so that the PE pipe piece and the PE material of the butt joint pipe section are guaranteed to have a certain depth of the molten layer. At the same time, the molten slag fills the gap of the ring area of the butt joint pipe section. After power-off and natural cooling, reliable molecular entanglement and solidification are realized, and the entire melting process is completed.

[0004] In a heat pipeline system, in addition to electrofusion pipe pieces, other pipeline fittings and instruments are also provided, such as elbows, tees, flanges, valves, compensators, water meters, flow meters, filters, temperature control instruments, pressure sensors, temperature control valves, pressure regulating valves, pressure relief valves and the like. These fittings and instruments play their respective roles in the heat pipeline system, ensure the safe, stable and efficient operation of the heat pipeline, and can cope with various complex working conditions that may occur. However, the number of traditional pipeline fittings and instruments applied in the heat pipeline system is relatively large, and the installation process is relatively complicated and complex. Correspondingly, in the maintenance process, each needs to be checked one by one. Therefore, the overall installation of the heat pipeline system is complex, the maintenance cost is high, the system integration degree is low, and the space occupancy rate is high. Therefore, the inventor realizes that how to improve the structural integration degree is the key to reducing the installation complexity and reducing the space occupancy rate.

[0005] Based on this, the inventors analyzed and researched the pipe fittings and instruments in the heat pipe system, and realized that the electric melting pipe fitting is a necessary structural part for pipe connection, which is difficult to avoid in the installation process, but its function is single, and the temperature sensor is a necessary detection element for detecting and recording the temperature change of the medium, and in the application practice, it is found that the temperature sensor is a relatively frequent element to replace or maintain, which is connected with the pipe in a threaded or welded manner, and such connection mode may have problems of damaging the pipe, loose connection, etc. during installation, replacement or maintenance, and has certain operation complexity and leakage risk. Therefore, a new technical solution should be proposed to solve the problems in the prior art. Content of the utility model

[0006] The application provides an integrated multifunctional electric melting pipe fitting to solve the problems of single function of the traditional electric melting pipe fitting and inconvenient installation and maintenance of the traditional temperature sensor.

[0007] In order to achieve the above-mentioned purpose, the application provides the following technical scheme:

[0008] The application provides an integrated multifunctional electric melting pipe fitting, which comprises an electric melting pipe body, wire columns are arranged at both ends of the outer wall of the electric melting pipe body, an electric heating wire part and an electric melting insertion limiting part are arranged at both ends of the inner wall of the electric melting pipe body, the electric heating wire part comprises a plurality of turns of electric heating wires arranged on the inner wall of the electric melting pipe body, and one end of the electric heating wire is electrically connected with the wire column; an electric melting sleeve pipe fitting is arranged on the outer wall of the electric melting pipe body and communicates with the inner cavity of the electric melting pipe body, the electric melting sleeve pipe fitting is located between the two electric melting insertion limiting parts, the inner cavity of the electric melting sleeve pipe fitting forms a mounting hole for mounting a temperature sensor, the temperature sensor is connected with the mounting hole in a matched plug-in connection mode through a sensor sleeve arranged outside a temperature sensor probe, and a fastening steel ring is arranged on the outer wall of the electric melting sleeve pipe fitting.

[0009] In the above technical scheme, further, the central axis of the electric melting sleeve pipe fitting is perpendicular to the central axis of the electric melting pipe body, and the electric melting sleeve pipe fitting is integrally connected with the electric melting pipe body.

[0010] Further, the inner cavity of the electric melting sleeve pipe fitting forms a first mounting hole and a second mounting hole which are sequentially connected, the first mounting hole is located at one end of the electric melting sleeve pipe fitting away from the electric melting pipe body, the inner diameter of the first mounting hole is greater than that of the second mounting hole, and a plurality of annular grooves for mounting sealing rings are formed on the inner wall of the first mounting hole.

[0011] Further, the temperature sensor comprises a temperature sensor probe and a temperature sensor head connected to one end of the temperature sensor probe, and a sensor sleeve is arranged on the temperature sensor probe, the sensor sleeve comprises a first sleeve body and a second sleeve body connected to the first sleeve body, the outer diameter of the first sleeve body is larger than the outer diameter of the second sleeve body, the first sleeve body is adapted to be inserted into a first mounting hole on the electric melting sleeve pipe fitting, the second sleeve body is adapted to be inserted into a second mounting hole on the electric melting sleeve pipe fitting, and the sensor sleeve is inserted from the inner cavity of the electric melting sleeve pipe fitting into the inner cavity of the electric melting pipe body.

[0012] Further, a groove is formed on the outer wall of the electric melting sleeve pipe fitting near the top thereof, and a fastening steel ring is arranged in the groove.

[0013] Further, the electric melting pipe body is a polyethylene electric melting pipe body.

[0014] Compared with the prior art, the present application has at least the following beneficial effects:

[0015] Based on further analysis and research on the problems of the prior art, the inventors realize that the current electric melting pipe fitting as a key component for connecting plastic pipes has a single function and is difficult to contribute to the integration of the heating system, and at the same time, the temperature sensor in the traditional heating system is a relatively frequent element to replace or maintain, and since it is currently installed by screwing or welding, there may be problems such as damage to the pipe, loose connection, etc. during installation, replacement or maintenance, which has certain operation complexity and leakage risk. Based on this, the inventors have carried out technical research and proposed the integrated multifunctional electric melting pipe fitting, which integrally installs the temperature sensor on the electric melting pipe body of the electric melting pipe fitting, so that the electric melting pipe fitting has the temperature measurement function of detecting and recording the temperature change of the medium in the pipe. During the pipe installation process, the operation of separately installing the temperature sensor is omitted, and when the temperature sensor needs to be maintained, the temperature sensor can be maintained, replaced or upgraded by only disassembling the temperature sensor probe, which simplifies the installation process, reduces the maintenance cost, and improves the integration of the heating system. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any inventive labor. It should be understood that the specific shapes and structures shown in the drawings should not be regarded as limiting conditions for realizing the present application; for example, those skilled in the art can make routine adjustments or further optimization to the increase / decrease / attribute division of certain units (components), specific shapes, positional relationships, connection modes, size ratio relationships, etc. based on the technical concepts and exemplary drawings disclosed in the present application.

[0017] Figure 1 Fig. 1 is a schematic view of a cross-sectional structure of an integrated multifunctional electrically fused pipe fitting according to an embodiment of the present application.

[0018] Legend of reference signs:

[0019] 1, temperature sensor meter head; 2, temperature sensor probe; 3, sensor sleeve; 4, sealing ring; 5, fastening steel ring; 6, electrically fused sleeve pipe fitting; 7, terminal post; 8, electrically fused insertion limiting; 9, electric heating wire part. DETAILED DESCRIPTION

[0020] The present application will be further described in detail below with reference to the accompanying drawings.

[0021] In the description of the present application: unless otherwise specified, the meaning of "a plurality of" is two or more. The terms "first", "second", and the like in the present application are intended to distinguish the objects referred to, and do not have a special meaning in the technical connotation aspect (for example, should not be understood as emphasizing importance or order, etc.). The expressions such as "include", "contain", "have", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

[0022] The terms such as "upper", "lower", "left", "right", "middle", etc. cited in the present application are generally for the purpose of intuitive understanding by referring to the drawings, and are not an absolute limitation on the positional relationship in the actual product. Changes in these relative positional relationships, without departing from the technical concept disclosed in the present application, are also considered within the scope of the present application.

[0023] The current monitoring of temperature characteristics in electrically fused pipe fittings is mainly for the fusion temperature of the electrically fused pipe fitting to ensure the quality of pipe fusion. For example, Chinese invention patent CN113075944A discloses a temperature control implementation method based on PE electrically fused pipe electrically fused temperature characteristic optimization, which can determine the output parameter adjustment rule of the power supply to obtain good electrically fused temperature characteristics by optimizing the electrically fused temperature characteristics, and then use the adjustment rule as a control rule to control the output parameter of the power supply in the electrically fused pipe fitting fusion process, i.e. it can control the fusion temperature of the butt joint pipe section in the PE pipe fitting fusion process to ensure the fusion quality. There is no technical case in the industry for monitoring the temperature characteristics of the medium in the pipe through the electrically fused pipe fitting.

[0024] The application provides an integrated multifunctional electrically fused pipe which can be applied in the heat industry, and the integrated multifunctional electrically fused pipe can be used as a heat-resistant temperature measuring electrically fused pipe for heating, and the material of the pipe can be polyethylene, polybutylene or polypropylene, and the application preferably uses polyethylene. The integrated multifunctional electrically fused pipe provided by the application not only can play a connecting role in the pipeline engineering, but also can detect and record the temperature change of the medium in the pipeline, so as to ensure the temperature stability and safety in the heat transfer process. The integrated multifunctional electrically fused pipe applied in the pipeline system can not only improve the integration of the pipeline system, but also solve the problem of inconvenient installation, replacement and maintenance of the traditional temperature sensor. The structure of the integrated multifunctional electrically fused pipe is described in detail below.

[0025] Referring to Figure 1 The integrated multifunctional electrically fused pipe provided by the application mainly comprises an electrically fused pipe body, wire posts 7 are arranged at both ends of the outer wall of the electrically fused pipe body, an electric heating wire part 9 and an electrically fused insertion limiting part 8 are arranged at both ends of the inner wall of the electrically fused pipe body, the electric heating wire part 9 comprises a plurality of rings of electric heating wires arranged on the inner wall of the electrically fused pipe body, and one end of the electric heating wire is electrically connected with the wire post 7; an electrically fused sleeve pipe part 6 is arranged on the outer wall of the electrically fused pipe body and is in communication with the inner cavity of the electrically fused pipe body, the inner cavity of the electrically fused sleeve pipe part 6 forms a mounting hole for mounting a temperature sensor, the temperature sensor is connected with the mounting hole in a plug-in connection mode through a sensor sleeve 3 arranged outside a temperature sensor probe 2, and a fastening steel ring 5 is arranged on the outer wall of the electrically fused sleeve pipe part 6.

[0026] The application integrates the temperature sensor and the electrically fused pipe, so that the installation and replacement of the temperature sensor become more convenient and safe. Specifically, the electrically fused sleeve pipe part provides a plug-in interface, avoiding the traditional threaded or welded connection mode, thereby reducing the risk of damage to the pipeline structure. The temperature sensor is connected with the mounting hole through the matched sensor sleeve, simplifying the installation and replacement operation and reducing the operation complexity. The combination of the electrically fused pipe body and the sleeve structure improves the overall sealing performance and reduces the risk of leakage. In addition, the structure design of the above scheme improves the stability and maintenance convenience of the temperature sensor, and no matter how frequently the temperature sensor is replaced, the integrity of the pipeline itself will not be affected, so that the service life of the pipeline is improved and the maintenance cost of the system is reduced.

[0027] Continuing to refer to Figure 1The central axis of the electric melting sleeve pipe fitting 6 in the application is perpendicular to the central axis of the electric melting pipe body, the electric melting sleeve pipe fitting 6 is integrally connected with the electric melting pipe body, the electric melting sleeve pipe fitting 6 is located between two electric melting insertion limiters 8, and two electric heating wire components 9 are respectively arranged on the outer sides of the two electric melting insertion limiters 8.

[0028] In the application, the inner cavity of the electric melting sleeve pipe fitting 6 forms a first mounting hole and a second mounting hole in sequence, the first mounting hole is located at one end of the electric melting sleeve pipe fitting 6 away from the electric melting pipe body, and the inner diameter of the first mounting hole is greater than that of the second mounting hole, and a plurality of annular grooves for mounting the sealing ring 4 are arranged on the inner wall of the first mounting hole. The temperature sensor includes a temperature sensor probe 2 and a temperature sensor head 1 connected to one end of the temperature sensor probe 2, and the temperature sensor probe 2 is sleeved with a sensor sleeve 3, the sensor sleeve 3 includes a first cylinder and a second cylinder connected with the first cylinder, the outer diameter of the first cylinder is greater than that of the second cylinder, the first cylinder is adapted to be inserted and mounted in the first mounting hole of the electric melting sleeve pipe fitting 6, the second cylinder is adapted to be inserted and mounted in the second mounting hole of the electric melting sleeve pipe fitting 6, and the sensor sleeve 3 is inserted from the inner cavity of the electric melting sleeve pipe fitting 6 into the inner cavity of the electric melting pipe body. A groove is arranged on the outer wall of the electric melting sleeve pipe fitting 6 close to the top thereof, and a fastening steel ring 5 is arranged in the groove.

[0029] In the application, the electric melting sleeve pipe fitting 6 is connected with the sensor sleeve 3, so that the temperature sensor can be reliably fixed in the electric melting sleeve pipe fitting 6, and the center hole of the electric melting sleeve pipe fitting 6 is in contact with the liquid flow or gas flow in the electric melting pipe body, which not only can reduce the vibration or displacement of the temperature sensor, thereby improving the stability and precision of temperature measurement, but also can simplify the installation and maintenance operation of the temperature sensor, and the sensor can be maintained, replaced or upgraded by disassembling the temperature sensor probe.

[0030] The size difference between the first cylinder and the second cylinder of the above-mentioned sensor sleeve 3 makes the temperature sensor have stronger adaptability during installation, avoids the loosening or poor contact of the temperature sensor, further improves the reliability of temperature monitoring, and improves the connection reliability of the electric melting sleeve pipe fitting.

[0031] The annular groove design on the inner wall of the first mounting hole in the above-mentioned electric fusion sleeve pipe fitting 6 provides a special space for installing the sealing ring. The sealing ring 4 can effectively prevent leakage between the temperature sensor and the electric fusion sleeve pipe fitting 6, thereby enhancing the sealing performance of the entire system. It is particularly suitable for high-pressure or high-temperature environments, ensuring the safety of the fluid in the pipeline.

[0032] The design of the grooves on the outer wall of the electric fusion sleeve pipe 6 and the fastening steel ring 5 in the present application further enhances the fastening effect of the connection part, avoiding loosening or leakage caused by vibration or temperature changes during use.

[0033] Compared with the prior art, this application has at least the following beneficial effects:

[0034] 1. This application greatly simplifies the installation and replacement of the temperature sensor by adapting the temperature sensor probe to the sensor sleeve and installing it on the electric fusion sleeve pipe fitting. Since the sensor sleeve is highly compatible with the electric fusion sleeve pipe fitting, the user can complete the replacement of the sensor more quickly, reducing downtime and maintenance costs. This integrated structural design of the electric fusion pipe fitting and the temperature sensor not only simplifies installation and maintenance, but also has the advantages of strong adaptability and flexible application.

[0035] 2. This application avoids the problems of complex installation, high maintenance cost and low system integration caused by separate installation of electric fusion pipe fittings and temperature sensors by integrating the design of electric fusion pipe fittings and temperature sensors. After application on the pipeline, the medium temperature can be monitored through the temperature sensor on the electric fusion pipe fitting, ensuring more efficient and safer heat transmission, while simplifying the installation process, reducing maintenance difficulty, and improving the stability and adaptability of the overall system.

[0036] 3. In the actual processing process, the integrated multifunctional electric fusion pipe fitting provided by this application can embed the sleeve of the temperature sensor into the electric fusion pipe fitting by injection molding, so as to achieve integrated production, which not only has higher production efficiency and lower manufacturing cost, but also avoids the tedious steps brought about by traditional separate installation, reduces the cost of sensor replacement and maintenance, and the integrated design makes the installation process simpler and more efficient, while reducing the difficulty and complexity of subsequent maintenance.

[0037] 4. This application has a wide range of applicability. Its integrated design makes the installation location more flexible and can be customized according to actual needs to meet the application needs in various complex scenarios.

[0038] 5. This application can maintain, replace or upgrade the sensor by disassembling the temperature sensor probe, which simplifies the installation process, reduces maintenance costs, helps to improve the overall efficiency and stability of the heat transmission system, helps to reduce energy consumption and reduce the failure rate, thereby bringing higher economic and social benefits to users.

[0039] 6、The integrated multifunctional electrically fused pipe provided by the application can be made of heat-resistant polyethylene, and the electrically fused pipe has the advantages of corrosion resistance and longer service life, and the inner wall of the pipe section will not produce scale, which will not affect the signal transmission of the temperature sensor, and the measurement accuracy is higher.

[0040] The technical features of the above embodiments can be combined in any manner (as long as the combination of the technical features does not exist contradictions), in order to make the description simple, not all possible combinations of the technical features in the above embodiments are described; these embodiments which are not explicitly written should also be considered as the scope of the present application.

[0041] The application is described in detail above through general description and specific embodiments. It should be understood that, based on the technical concept of the application, some conventional adjustments or further innovations can be made to these specific embodiments; as long as the technical concept of the application is not deviated, the technical solutions obtained by these conventional adjustments or further innovations also fall within the protection scope of the claims of the application.

Claims

1. An integrated multifunctional electrofusion fitting, characterized in that, The electric melting tube body is provided with a terminal post at each end of the outer wall of the electric melting tube body, and an electric heating wire part and an electric melting insertion limiting part are respectively arranged at the two ends of the inner wall of the electric melting tube body, the electric heating wire part comprises a plurality of turns of electric heating wires arranged on the inner wall of the electric melting tube body, and one end of the electric heating wire is electrically connected with the terminal post; An electric melting sleeve pipe part is arranged on the outer wall of the electric melting tube body and communicates with the inner cavity of the electric melting tube body, the electric melting sleeve pipe part is located between the two electric melting insertion limiting parts, the inner cavity of the electric melting sleeve pipe part forms a mounting hole for mounting a temperature sensor, the temperature sensor is connected with the mounting hole through a sensor sleeve arranged outside a temperature sensor probe, and a fastening steel ring is arranged on the outer wall of the electric melting sleeve pipe part.

2. The integrated multifunctional electrically fused pipe as claimed in claim 1, wherein, The central axis of the electric melting sleeve pipe part is perpendicular to the central axis of the electric melting tube body, and the electric melting sleeve pipe part is integrally connected with the electric melting tube body.

3. The integrated multifunctional electrically fused pipe as claimed in claim 1, wherein, The inner cavity of the electric melting sleeve pipe part forms a first mounting hole and a second mounting hole which are sequentially communicated, the first mounting hole is located at one end of the electric melting sleeve pipe part away from the electric melting tube body, the inner diameter of the first mounting hole is greater than the inner diameter of the second mounting hole, and a plurality of annular grooves for mounting sealing rings are formed in the inner wall of the first mounting hole.

4. The integrated multifunctional electrically fused pipe as claimed in claim 3, wherein, The temperature sensor comprises a temperature sensor probe and a temperature sensor head connected to one end of the temperature sensor probe, the temperature sensor probe is sleeved with the sensor sleeve, the sensor sleeve comprises a first cylinder and a second cylinder connected with the first cylinder, the outer diameter of the first cylinder is greater than the outer diameter of the second cylinder, the first cylinder is adapted to be inserted into the first mounting hole on the electric melting sleeve pipe part, the second cylinder is adapted to be inserted into the second mounting hole on the electric melting sleeve pipe part, and the sensor sleeve is inserted from the inner cavity of the electric melting sleeve pipe part into the inner cavity of the electric melting tube body.

5. The integrated multifunctional electrically fused pipe as claimed in claim 4, wherein, A groove is formed in the outer wall of the electric melting sleeve pipe part near the top thereof, and the fastening steel ring is arranged in the groove.

6. The integrated multifunctional electrically fused pipe as claimed in claim 1, wherein, The electric melting tube body is a polyethylene electric melting tube body.

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