Electromechanical pipeline current hot melting connection method
Through the electromechanical pipeline current hot-melt connection method, a hot melt block is used to melt the inner side of the current network pipe and fill the connection cavity, which solves the problems of pipeline connection complexity and high cost in the existing technology and realizes simple, safe and high-strength pipeline connection.
Patent Information
- Application Number
- CN202510980946.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-16
- Publication Date
- 2025-09-19
AI Technical Summary
Existing pipe connection methods are complex, costly, and difficult to operate in special environments, especially underwater or in limited space, where welding becomes more difficult and is not suitable for large-size and large-diameter pipes.
The electromechanical pipeline current hot-melt connection method is adopted. By filling the inside of the traction network pipe with hot-melt blocks, the traction network pipe is passed through the inside of the current network pipe, and voltage is applied at both ends of the current network pipe to melt the hot-melt blocks. The hot-melt blocks flow out of the traction network pipe and fill the connection cavity until it is filled and cooled to achieve pipeline connection.
It realizes the hot-melt connection of complex pipe structures without welding, which is simple to operate, low in cost, safe and reliable in connection, and has high structural strength. It is suitable for connecting pipes of various materials and diameters.
Smart Images
Figure CN120663546A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of pipeline connection, and more specifically, relates to a method for connecting electromechanical pipelines by current hot-melt connection. Background Art
[0002] In engineering installation projects, pipe connections need to be made under different working conditions, and this connection is mainly done by butt jointing. Pipeline connections are mostly made by welding, which is easy to operate and relatively easy. However, in some special situations, such as underwater or when the pipe shape is unusual, or even when the operating space at the pipe connection is very small, welding is very difficult. There are existing methods for connecting pipes through high-frequency heating, but this method is not suitable for large-sized and large-diameter pipes. Moreover, if the position where the pipe needs to be connected is too high, the construction of the corresponding device is also very difficult.
[0003] Therefore, it is becoming increasingly important to propose a connection method that is easy to operate, has low requirements on environmental conditions, is simple to operate and has low cost, while ensuring that the structural strength of the connection meets the requirements. Summary of the Invention
[0004] The purpose of the present invention is to provide a method for connecting electromechanical pipelines with current hot-melt connection, aiming to solve the problems of high environmental requirements, high cost and complex operation during pipeline connection.
[0005] To achieve the above object, the technical solution adopted by the present invention is to provide a method for connecting electromechanical pipelines with current hot melt, comprising: Filling the inner side of the traction network tube with hot melt blocks, and then inserting the traction network tube into the inner side of the current network tube; Pulling the current network pipe and the traction network pipe together to move them from one side of the connection hole on the pipe to be connected into the connection cavity of the area to be connected, and continuing to drag them so that the current network pipe and the traction network pipe finally pass through the other side of the connection hole; Applying a first voltage across the two ends of the current network tube to heat the current network tube and melt the hot melt block; while the hot melt block is melting, continuously pulling the traction network tube out of the connection hole, thereby filling the connection cavity with the hot melt block; After the connection cavity is filled, the traction network pipe is completely pulled out from the connection hole, and the pipeline connection is achieved after cooling.
[0006] In a possible implementation, the step of filling the inner side of the traction network tube with hot melt blocks further includes: The materials of the traction network pipe, the current network pipe and the hot melt block are reasonably selected according to the material of the pipeline, and the melting points of the traction network pipe, the current network pipe and the hot melt block are ensured to decrease in sequence; The connecting cavity is sealed to prevent the hot-melt liquid from overflowing from the connecting cavity.
[0007] In a possible implementation, before filling the hot melt block inside the traction network tube, the method further includes: Drilling the connecting hole of a suitable size on the pipe to be connected, so that the connecting hole communicates with the connecting cavity in the pipe; The connection hole is enlarged so that the current network tube can be inserted into and out of the connection hole at the same time.
[0008] In a possible implementation, before pulling the current network pipe and the traction network pipe together to move them from one side of the connection hole on the to-be-connected pipe into the connection cavity of the to-be-connected area, the method further includes: By measuring the resistivity of each material, it is ensured that after the first voltage is applied, the current can only flow in the current network tube; and it is ensured that the two ends of the current network tube are located outside the connection hole.
[0009] In a possible implementation, a plurality of insulating needles are provided along the outer side of the current network tube. The insulating needles space the current network tube from the inner wall of the connection cavity by a certain distance so that the current flows only in the current network tube.
[0010] In a possible implementation, applying a first voltage across the two ends of the current network tube to increase the temperature of the current network tube and to heat and melt the hot melt block includes: Electrode sleeves are installed at both ends of the current network tube; the electrode sleeves are sleeved on the outside of the current network tube; the electrode sleeves position the two ends of the current network tube to avoid contact between the two ends of the current network tube, and on the other hand, make room for the traction network tube to move.
[0011] In a possible implementation, before pulling the current network pipe and the traction network pipe together to move them from one side of the connection hole on the to-be-connected pipe into the connection cavity of the to-be-connected area, the method further includes: Passing the guide wire through the connecting hole into the connecting cavity and out of the connecting hole; Then, the guide wire is connected to the current network tube, and the current network tube is moved through the connection cavity by dragging the guide wire.
[0012] In a possible implementation, before applying a first voltage across the two ends of the current network tube to increase the temperature of the current network tube and heat and melt the hot melt block, the method further includes: An insulating block is placed in the connection hole, and the insulating block is located between the two ends of the current network tube; the insulating block separates the two current network tubes on both sides to prevent the current network tubes from short-circuiting.
[0013] In a possible implementation, after the connection cavity is filled and the traction network pipe is completely pulled out from the connection hole, the method further includes: Applying a second voltage to both ends of the current network tube, and causing the current network tube to be thermally melted by the second voltage; The pipe to be welded is subjected to high-frequency vibration to allow the melted liquid to fill the connection cavity.
[0014] In a possible implementation, before inserting the traction network pipe into the inner side of the current network pipe, the method further includes: A plurality of spherical blocks are filled between the current network tube and the traction network tube. The spherical blocks are made of the same material as the hot melt blocks. The spherical blocks are used to reduce the resistance of the traction network tube when it moves relative to the current network tube.
[0015] The beneficial effect of the electromechanical pipeline current hot-melt connection method provided by the present invention is that: compared with the existing technology, in the electromechanical pipeline current hot-melt connection method of the present invention, the hot-melt block is first filled on the inside of the traction network pipe, and then the traction network pipe is inserted into the inside of the current network pipe. After the above-mentioned preparatory work is completed, the current network pipe and the traction network pipe are pulled into the connection cavity through the connection hole. After a first voltage is applied to both ends of the current network pipe, the hot-melt block is heated and melted, thereby flowing out of the traction network pipe. Due to the gaps in the hot-melt block, it is necessary to continuously pull the traction network pipe out of the connection hole at this time, so as to achieve the replenishment of the hot-melt block in the connection cavity, until the connection cavity is filled, and finally the traction network pipe is completely pulled out of the connection hole, and the pipeline connection is achieved after cooling.
[0016] The method of the present application can realize hot-melt connection of complex pipes and complex structure connection cavities without welding, has simple operation and low cost, and the connection is safe, reliable, and has high structural strength, and has a high technical level. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0018] Figure 1 A flow chart of a method for current hot-melt connection of electromechanical pipelines provided in an embodiment of the present invention. DETAILED DESCRIPTION
[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0020] See also Figure 1 The method for connecting electromechanical pipelines with current hot melt provided by the present invention is now described. The method for connecting electromechanical pipelines with current hot melt includes: Fill the inner side of the traction network tube with hot melt blocks, and then pass the traction network tube through the inner side of the current network tube.
[0021] The current network pipe and the traction network pipe are pulled together to move from one side of the connecting hole on the pipe to be connected into the connecting cavity of the area to be connected. Continuous dragging makes the current network pipe and the traction network pipe finally pass through the other side of the connecting hole.
[0022] A first voltage is applied to both ends of the current network tube to heat the current network tube and melt the hot melt block; while the hot melt block is melting, the traction network tube is continuously pulled out from the connection hole, thereby filling the connection cavity with the hot melt block.
[0023] After the connection cavity is filled, the traction network pipe is completely pulled out from the connection hole, and the pipeline connection is completed after cooling.
[0024] The beneficial effect of the electromechanical pipeline current hot-melt connection method provided by the present invention is that: compared with the existing technology, in the electromechanical pipeline current hot-melt connection method of the present invention, the hot-melt block is first filled on the inside of the traction network pipe, and then the traction network pipe is inserted into the inside of the current network pipe. After the above-mentioned preparatory work is completed, the current network pipe and the traction network pipe are pulled into the connection cavity through the connection hole. After a first voltage is applied to both ends of the current network pipe, the hot-melt block is heated and melted, thereby flowing out of the traction network pipe. Due to the gaps in the hot-melt block, it is necessary to continuously pull the traction network pipe out of the connection hole at this time, so as to achieve the replenishment of the hot-melt block in the connection cavity, until the connection cavity is filled, and finally the traction network pipe is completely pulled out of the connection hole, and the pipeline connection is achieved after cooling.
[0025] The method of the present application can realize hot-melt connection of complex pipes and complex structure connection cavities without welding, has simple operation and low cost, and the connection is safe, reliable, and has high structural strength, and has a high technical level.
[0026] In some embodiments of the electromechanical pipeline current hot melt connection method provided in the present application, filling the hot melt block inside the traction network pipe further includes: Reasonably select the materials of the traction network pipe, current network pipe and hot melt block according to the material of the pipeline to ensure that the melting points of the traction network pipe, current network pipe and hot melt block decrease in sequence.
[0027] The connection cavity is sealed to prevent the liquid after hot melting from overflowing from the connection cavity.
[0028] When sealing the connection cavity, a high-temperature resistant inorganic fabric sealing strip can be used to surround the edge of the connection cavity and paste it to ensure a good sealing effect. During the pasting process, pay attention to the tightness of the strip to avoid gaps that may cause leakage of hot melt liquid.
[0029] In actual operation, preparations must be made in strict accordance with material selection requirements. Carefully inspect the traction network pipe, current network pipe, and hot melt block to ensure that their materials meet design requirements. For the hot melt block, also check its internal structure for uniformity to ensure that when heated and melted, it can evenly flow out of the traction network pipe and fill the connection cavity.
[0030] After the connection cavity is filled with the hot melt and cooled, perform a visual inspection of the connection. Check the connection for flatness and for cracks or other defects. If any problems are found, promptly implement appropriate repair measures to ensure the quality and safety of the pipe connection. By implementing the above-mentioned steps in the embodiment, such as sealing the connection cavity and selecting appropriate materials, the reliability and stability of the current hot melt connection method for electromechanical pipes can be further improved, further improving the weld-free hot melt connection of complex pipe and complex structure connection cavities.
[0031] In some embodiments of the electromechanical pipeline current hot melt connection method provided in the present application, before filling the hot melt block inside the traction network pipe, the method further includes: Drill a connecting hole of appropriate size on the pipe to be connected so that the connecting hole is connected to the connecting cavity in the pipe.
[0032] The connection hole is enlarged so that the current network tube can be inserted and exited at the same time.
[0033] In some more specific embodiments, a dedicated reaming tool with an adjustable diameter range is used to expand the connection hole to accommodate pipes of varying diameters. By gradually adjusting the diameter of the reaming tool, the connection hole can be precisely enlarged to the appropriate size, ensuring smooth and simultaneous insertion and exit of the current network tube.
[0034] After completing the above-mentioned processing of the connection holes, start filling the inside of the traction network tube with hot melt blocks. The filling process requires strict control of the filling amount and filling uniformity of the hot melt blocks. Use specially designed filling equipment to slowly and evenly fill the hot melt blocks into the inside of the traction network tube according to the predetermined filling amount. During the filling process, monitor the filling situation in real time to ensure that the hot melt blocks are evenly distributed in the traction network tube without gaps or accumulation. After filling is completed, carefully check the filling quality of the hot melt blocks. Through visual observation and simple detection methods, such as tapping the traction network tube and listening to whether the sound inside is uniform, it can be judged whether the hot melt blocks are densely filled. If uneven filling or gaps are found, timely adjustments and supplements should be made to ensure the quality of subsequent hot melt connections.
[0035] Next, thread the traction network tube inside the current network tube. This operation requires careful attention to ensure that the traction network tube is inserted accurately into the current network tube and that the two are positioned correctly relative to each other. During the threading process, care should be taken to avoid collision or twisting of the traction network tube and the current network tube, as this will affect the subsequent connection.
[0036] After the traction network tube is successfully inserted into the inner side of the current network tube, pull the current network tube and traction network tube through the connection hole into the connection cavity. During the pulling process, the pulling force should be kept uniform and moderate to prevent the pulling speed from being too fast or too slow, which may cause damage to the network tube at the connection hole or displacement.
[0037] After the current network tube and the traction network tube are pulled to the appropriate position in the connection cavity, a first voltage is applied to both ends of the current network tube. When applying the voltage, strictly follow the specified voltage value and application time. By precisely controlling the voltage parameters, the hot melt block is evenly heated and flows smoothly out of the traction network tube.
[0038] As the hot melt melts and flows out of the traction network pipe, due to the gaps in the hot melt, the traction network pipe needs to be continuously pulled out of the connection hole. During the extraction process, pay close attention to the replenishment of the hot melt in the connection cavity to ensure that the replenishment process proceeds smoothly and the filling amount can gradually reach the requirement of filling the connection cavity. In the process of continuously extracting the traction network pipe, monitor the filling status of the hot melt in the connection cavity in real time. The filling degree and uniformity of the hot melt can be understood by setting an observation window on the outside of the connection cavity or using other monitoring methods, such as ultrasonic testing. According to the monitoring results, adjust the extraction speed and direction of the traction network pipe in a timely manner to ensure that the hot melt in the connection cavity can be evenly filled.
[0039] After the hot melt cools, the pipe connection is complete. At this point, the connection is inspected, including a visual inspection and performance test. The visual inspection primarily checks whether the connection is flat and free of cracks or other defects. Performance testing can include pressure testing and leak testing to ensure the connection is secure, reliable, and structurally strong enough to meet the pipe's operational requirements.
[0040] Furthermore, the method of the present application offers excellent maintainability. If a connection requires repair or component replacement during pipeline use, maintenance personnel can easily perform the operation due to the relative simplicity of hot-melt connection, which does not require complex welding equipment and techniques. By heating the hot-melt block to remelt it, the pipeline connection can be easily separated, allowing repairs or replacements to be made and the hot-melt connection to be reconnected, restoring normal pipeline use.
[0041] In some embodiments of the electromechanical pipeline current hot-melt connection method provided in the present application, before the current network pipe and the traction network pipe are pulled together to move from one side of the connection hole on the pipeline to be connected into the connection cavity of the area to be connected, the method further includes: By measuring and calculating the resistivity of each material, it is ensured that after the first voltage is applied, the current can only flow in the current network tube; and it is ensured that the two ends of the current network tube are located outside the connection hole.
[0042] The temperature changes within the connection cavity are monitored in real time. When the temperature reaches the predetermined hot melt temperature, the hot melt process is initiated by controlling the magnitude and duration of the first voltage, causing the hot melt block to form a liquid within the connection cavity. In practical applications, the electromechanical piping current hot melt connection method provided in this application is suitable for connecting pipes of various materials and diameters. For pipes of different materials, a good connection can be achieved by simply adjusting the hot melt block composition and filling process according to their characteristics.
[0043] This method is highly adaptable to pipe diameters. Whether connecting smaller pipes, such as those in home plumbing systems, or larger industrial pipes, a stable and reliable connection can be achieved by properly adjusting parameters such as the connection hole size, the specifications of the traction and current network pipes, and the amount of hot melt filler.
[0044] The method of this application has demonstrated significant advantages in large-scale industrial projects, such as the construction of petrochemical pipeline systems. It enables the rapid and efficient connection of complex pipeline structures, reducing the significant time and labor costs required by traditional welding methods. Furthermore, due to the secure and reliable joints and high structural strength, safety risks such as pipeline leakage are effectively reduced, ensuring the smooth operation of industrial production.
[0045] In some embodiments of the electromechanical pipeline current hot-melt connection method provided in the present application, multiple insulating needles are arranged along the outer side of the current mesh tube. The insulating needles separate the current mesh tube from the inner wall of the connection cavity by a certain distance so that the current flows only in the current mesh tube.
[0046] During a hot melt connection, the connection area is first preheated using a heating device. Due to the presence of the insulating pins, the current remains stable and flows only within the current network throughout the hot melt connection process, eliminating safety hazards such as leakage. If the current flow changes, the hot melt block will not be able to effectively heat and melt, and the pipe connection will not be completed. Furthermore, as the temperature cools, the solidified material in the connection cavity will clog the connection cavity, making subsequent repairs and subsequent connections more difficult.
[0047] In some embodiments of the electromechanical conduit current hot melt connection method provided in the present application, applying a first voltage to both ends of the current network pipe to heat the current network pipe and melt the hot melt block includes: Electrode sleeves are installed at both ends of the current network tube; the electrode sleeves are placed on the outside of the current network tube; the electrode sleeves position the two ends of the current network tube to avoid contact between the two ends of the current network tube, and on the other hand, make room for the traction network tube to move.
[0048] An insulating layer is provided between the electrode sleeve and the current network tube to prevent current leakage. The electrode sleeve is connected to a power source via a wire, thereby applying a first voltage to both ends of the current network tube. When the first voltage is applied, the current passes through the current network tube to generate heat, causing the current network tube to gradually heat up. As the temperature rises, the hot melt block located inside the current network tube begins to heat and melt. After the hot melt block melts, its fluidity increases, allowing it to better fuse with adjacent pipe components. At this time, the voltage magnitude and application time are controlled to ensure that the current network tube heats up to the appropriate temperature range so that the hot melt block achieves the best hot melting effect. The temperature changes of the current network tube are monitored, and the voltage is adjusted in time through a feedback mechanism to ensure the stability and reliability of the entire hot melt connection process.
[0049] During the melting process of the hot melt block, the movement of the traction network pipe must be closely monitored. Because the electrode sleeves have cleared the space for the traction network pipe to move, it can follow a predetermined trajectory and speed. The movement of the traction network pipe must be coordinated with the melting progress of the hot melt block to ensure accurate docking with other related components after the hot melt block has fully melted. When the hot melt block reaches the ideal melting state, the traction network pipe moves into the appropriate position. Finally, the traction network pipe needs to be completely removed from the current network pipe, and the traction network pipe only serves as a component for transporting the hot melt block.
[0050] After the connection is completed, the voltage is maintained for a period of time to allow the hot-melt connection to fully cool and solidify, thereby enhancing the firmness of the connection. Finally, the electrode sleeve is removed to inspect the connection to ensure that the connection quality meets the requirements and the entire electromechanical pipeline current hot-melt connection process is successfully completed.
[0051] In some embodiments of the electromechanical pipeline current hot-melt connection method provided in the present application, before the current network pipe and the traction network pipe are pulled together to move from one side of the connection hole on the pipeline to be connected into the connection cavity of the area to be connected, the method further includes: First, pass the guide wire into the connecting cavity from the connecting hole and then pass it out from the connecting hole.
[0052] Then, the guide wire is connected to the current network tube, and the current network tube is moved through the connection cavity by dragging the guide wire.
[0053] The guide wire can simplify the time required for the current network tube to move in the connection cavity, and the guide wire can be controlled by a micro robot. It is this advantage that makes this application applicable to pipeline connections with very complex structures, and even some pipeline connections with bending angles can also apply this method.
[0054] In some embodiments of the electromechanical conduit current hot melt connection method provided in the present application, before applying a first voltage to both ends of the current network tube to heat the current network tube and melt the hot melt block, the method further includes: An insulating block is placed in the connection hole, and the insulating block is located between the two ends of the current network tube; the insulating block separates the two current network tubes on both sides to prevent the current network tubes from short-circuiting.
[0055] After the insulating block is placed, inspect the current network tube to ensure it is securely installed and fits tightly against the current network tube, with no looseness or gaps. Next, apply the first voltage across the current network tube. As the voltage is applied, the current network tube gradually heats up, and the hot melt block begins to melt. During this process, closely monitor the temperature of the current network tube and the melting state of the hot melt block. Adjust the voltage as needed to ensure a stable heating process and uniform and sufficient melting of the hot melt block, thus laying a solid foundation for subsequent reliable hot melt connections of the electromechanical conduits.
[0056] In some embodiments of the electromechanical pipeline current hot melt connection method provided in the present application, after the cavity to be connected is filled and the traction network pipe is completely pulled out from the connection hole, the method further includes: A second voltage is applied to both ends of the current network tube, and the current network tube is thermally melted by the second voltage.
[0057] The pipe to be welded is subjected to high-frequency vibration to allow the melted liquid to fill the connection cavity.
[0058] After subjecting the pipe to be welded to high-frequency vibration to fill the connection cavity with molten liquid, check the liquid filling status to ensure there are no bubbles or other abnormalities. Next, wait for the liquid in the connection cavity to cool and solidify, closely monitoring temperature changes during this process and recording the cooling time and related parameters. When the liquid has completely solidified, re-inspect the appearance and strength of the connection, performing necessary tests, such as pressure testing, to verify that the connection meets quality standards. If so, the electromechanical piping current hot-melt connection is complete and can be put into use.
[0059] In some embodiments of the electromechanical pipeline current hot-melt connection method provided in the present application, before the traction network pipe is inserted into the inner side of the current network pipe, the method further includes: A plurality of spherical blocks are filled between the current network tube and the traction network tube. The spherical blocks are made of the same material as the hot melt blocks. The spherical blocks are used to reduce the resistance of the traction network tube when it moves relative to the current network tube.
[0060] Specifically, these spherical blocks form a rolling support structure between the two. When the traction network pipe begins to pass through the inside of the current network pipe, it can move more smoothly under the rolling action of the spherical blocks, reducing the energy loss caused by direct friction and possible damage to the pipeline.
[0061] As the traction network pipe is continuously installed, the spherical blocks will constantly adjust their position, while maintaining effective support for the traction network pipe. Furthermore, because the spherical blocks are made of the same material as the hot melt blocks, they will not adversely affect the connection during the subsequent hot melt connection process. When the required hot melt temperature is reached, the area where the spherical blocks are located will also achieve a good hot melt fusion, further enhancing the integrity and stability of the pipe connection.
[0062] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. The method for connecting electromechanical pipelines with current hot melt is characterized by: include: Filling the inner side of the traction network tube with hot melt blocks, and then inserting the traction network tube into the inner side of the current network tube; Pulling the current network pipe and the traction network pipe together to move them from one side of the connection hole on the pipe to be connected into the connection cavity of the area to be connected, and continuing to drag them so that the current network pipe and the traction network pipe finally pass through the other side of the connection hole; Applying a first voltage across the two ends of the current network tube to increase the temperature of the current network tube and to heat and melt the hot melt block; During the melting process of the hot melt block, the traction network tube is continuously drawn out from the connection hole, thereby filling the connection cavity with the hot melt block; After the connection cavity is filled, the traction network pipe is completely pulled out from the connection hole, and the pipeline connection is achieved after cooling.
2. The electromechanical pipeline current hot melt connection method according to claim 1, characterized in that: The step of filling the inner side of the traction network tube with hot melt blocks further comprises: The materials of the traction network pipe, the current network pipe and the hot melt block are reasonably selected according to the material of the pipeline, and the melting points of the traction network pipe, the current network pipe and the hot melt block are ensured to decrease in sequence; The connecting cavity is sealed to prevent the hot-melt liquid from overflowing from the connecting cavity.
3. The electromechanical pipeline current hot melt connection method according to claim 2, characterized in that: Before filling the hot melt block inside the traction network tube, the method further comprises: Drilling the connecting hole of a suitable size on the pipe to be connected, so that the connecting hole communicates with the connecting cavity in the pipe; The connection hole is enlarged so that the current network tube can be inserted into and out of the connection hole at the same time.
4. The electromechanical pipeline current hot melt connection method according to claim 2, characterized in that: Before pulling the current network pipe and the traction network pipe together to move them into the connection cavity of the area to be connected from one side of the connection hole on the pipe to be connected, the method further includes: By measuring the resistivity of each material, it is ensured that after the first voltage is applied, the current can only flow in the current network tube; and it is ensured that the two ends of the current network tube are located outside the connection hole.
5. The electromechanical pipeline current hot melt connection method according to claim 2, characterized in that: A plurality of insulating needles are arranged along the outer side surface of the current network tube, and the insulating needles space the current network tube from the inner wall of the connecting cavity by a certain distance so that the current flows only in the current network tube.
6. The electromechanical pipeline current hot melt connection method according to claim 2, characterized in that: The step of applying a first voltage at both ends of the current network tube to increase the temperature of the current network tube and heat and melt the hot melt block comprises: Electrode sleeves are installed at both ends of the current network tube; the electrode sleeves are sleeved on the outside of the current network tube; the electrode sleeves position the two ends of the current network tube to avoid contact between the two ends of the current network tube, and on the other hand, make room for the traction network tube to move.
7. The electromechanical pipeline current hot melt connection method according to claim 2, characterized in that: Before pulling the current network pipe and the traction network pipe together to move them into the connection cavity of the area to be connected from one side of the connection hole on the pipe to be connected, the method further includes: Passing the guide wire through the connecting hole into the connecting cavity and out of the connecting hole; Then, the guide wire is connected to the current network tube, and the current network tube is moved through the connection cavity by dragging the guide wire.
8. The electromechanical pipeline current hot melt connection method according to claim 2, characterized in that: Before applying a first voltage across the two ends of the current network tube to heat the current network tube and melt the hot melt block, the method further includes: An insulating block is placed in the connection hole, and the insulating block is located between the two ends of the current network tube; the insulating block separates the two current network tubes on both sides to prevent the current network tubes from short-circuiting.
9. The electromechanical pipeline current hot melt connection method according to claim 2, characterized in that: After the connection cavity is filled and the traction network pipe is completely pulled out from the connection hole, the method further comprises: Applying a second voltage to both ends of the current network tube, and causing the current network tube to be thermally melted by the second voltage; The pipe to be welded is subjected to high-frequency vibration to allow the melted liquid to fill the connection cavity.
10. The electromechanical pipeline current hot melt connection method according to claim 2, characterized in that: Before the traction network pipe is inserted into the inner side of the current network pipe, the method further includes: A plurality of spherical blocks are filled between the current network tube and the traction network tube. The spherical blocks are made of the same material as the hot melt blocks. The spherical blocks are used to reduce the resistance of the traction network tube when it moves relative to the current network tube.