Electromagnetic induction sealing electric melting gas pipeline joint

Abstract

The invention belongs to the technical field of pipeline joints, and discloses an electromagnetic induction sealing electric melting gas pipeline joint which comprises an outer pipe body, a metal pipe body is fixedly sleeved with the outer pipe body, an inner pipe body is fixedly sleeved with the inner wall of the metal pipe body, and a joint cavity is formed in the end face of the metal pipe body. By controlling rotation and transverse movement of the rotary processing part and matching with heating control of an electrified coil on a metal pipe body, a sleeved plastic pipe opening is electrically fused, a joint cavity is refilled and solidified, sealing connection is completed, and stirring and reciprocating actions of a movable ring are matched, so that on one hand, uniform stirring of electrically fused plastic is achieved, and the sealing effect is improved; and on the other hand, through the mode that suction is conducted firstly and then extrusion is conducted, the connector cavity is fully filled with the electric melting plastic, condensation after sealing is reinforced is completed, holes and nonuniformity of electric melting are avoided, the sealing performance and stability of connection after electromagnetic induction sealing electric melting are further improved, and the use effect is good.

Description

Technical Field

[0001] This invention belongs to the field of pipe joint technology, specifically an electromagnetic induction sealing electrofusion gas pipe joint. Background Technology

[0002] Electromagnetic induction sealing electrofusion gas pipeline joint is an advanced pipeline connection technology that combines the advantages of electromagnetic induction heating and electrofusion connection.

[0003] Existing electromagnetic induction sealing electrofusion gas pipeline joints utilize an energized coil to electromagnetically influence a metal pipeline, generating eddy currents that heat the pipeline. This heat then electrofusion the fitted plastic pipe, securing the connection with the re-melted end. However, during the electrofusion process, the weight of the molten plastic causes voids and gaps between the molten pipe end and the joint, affecting the sealing and resulting in defects. Furthermore, the sealed end after electrofusion is difficult to disassemble quickly, requiring external cleaning equipment for internal cleaning before subsequent connection. Otherwise, the overall performance is unsatisfactory. Summary of the Invention

[0004] The purpose of this invention is to provide an electromagnetic induction sealing electrofusion gas pipeline joint to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an electromagnetic induction sealing electrofusion gas pipeline joint, comprising an outer pipe body, a metal pipe body fixedly sleeved inside the outer pipe body, an inner pipe body fixedly sleeved on the inner wall of the metal pipe body, a joint cavity formed at the end face of the metal pipe body, a coil wound around the outer side of the metal pipe body, the coil being located outside the joint cavity, a rotating conductive part rotatably mounted inside the metal pipe body, a rotating processing part rotatably sleeved inside the joint cavity, the rotating processing part being movably connected to the rotating conductive part, a driving assembly fixedly mounted on the outer side of the outer pipe body, the driving assembly driving the rotating processing part to rotate, and a control assembly fixedly mounted on the bottom of the outer side of the outer pipe body, the control assembly controlling the left and right movement of the rotating processing part.

[0006] The rotating processing part includes a movable ring, a connecting rod, a spring, and a protrusion. The protrusion is fixed to the front of the movable ring, the connecting rod is fixedly connected to the back of the movable ring, one end of the spring is fixed to the end of the connecting rod, and the other end is fixedly connected to the rotating conduction part.

[0007] Preferably, the metal tube body has an assembly chamber inside, the assembly chamber including an annular groove, an assembly annular cavity and a connecting annular groove, the annular groove, the assembly annular cavity and the connecting annular groove are all formed inside the metal tube body, the annular groove communicates with the connector cavity, and the two sides of the assembly annular cavity communicate with the annular groove and the connecting annular groove respectively.

[0008] Preferably, the outer surface of the outer tube body is provided with an adapter groove one, and the outer surface of the metal tube body is provided with an adapter groove two. The adapter groove two and the adapter groove one correspond to each other and are connected. The adapter groove two is connected to the assembly ring cavity.

[0009] Preferably, the rotating guide portion includes a gear ring, a mounting ring, a sleeve, an adapter ring groove, and a sleeve. There are two mounting rings, which are symmetrically fixed on both sides of the gear ring. The sleeve is opened inside the mounting ring and the gear ring and is connected in sequence. The adapter ring groove is opened on the outer surface of one of the mounting rings and corresponds to the position of the connecting ring groove.

[0010] Preferably, a connecting ring is fixedly sleeved inside one of the mounting rings, the other end of the spring is fixed on the connecting ring, the sleeve rod moves through the sleeve and is sleeved in the sleeve interface, and the sleeve rod moves through the ring groove.

[0011] Preferably, the drive assembly includes a bracket, a rotating shaft, a first gear, a motor, and a second gear. The bracket is fixed to the top of the outer tube, the rotating shaft is rotatably sleeved in the bracket, the first gear is symmetrically sleeved at both ends of the rotating shaft, the motor is fixed to the top of the bracket, the second gear is fixedly sleeved on the outer surface of the motor output shaft and meshes with the first gear, the lower part of the first gear is located inside the first and second adapter slots, and the first gear meshes with a gear ring.

[0012] Preferably, the metal tube and the outer tube are provided with a ventilation channel, which connects the assembly chamber to the control component. The ventilation channel includes an intermediate cavity and a connecting port. The connecting port is located at the bottom of the outer tube and extends to the bottom surface of the metal tube, and communicates with the intermediate cavity. The intermediate cavity is located on the inner wall of the metal tube and its two ends are connected to the corresponding connecting ring grooves.

[0013] Preferably, the control assembly includes a bottom cylinder, a piston plate, and an adjusting rod. The bottom cylinder is fixedly connected to the bottom of the outer tube and communicates with the connecting port. The piston plate is movably sleeved inside the bottom cylinder. The adjusting rod is threadedly sleeved at the bottom of the bottom cylinder and its upper end is fixedly connected to the piston plate.

[0014] Preferably, the control component is internally fitted with a sampling component, which includes a guide tube, a first sealing plug, and a second sealing plug. The upper end of the guide tube passes through the communication port and is fixedly fitted into the metal tube body, and passes through the inner tube body and communicates with the inner cavity of the inner tube body. The lower end of the guide tube passes through the piston plate and the adjusting rod and extends downward. The first sealing plug is threadedly fitted onto the bottom of the guide tube, and the second sealing plug is threadedly fitted onto the side of the guide tube and controls the sealing inside the guide tube.

[0015] Preferably, an energizing mechanism is fixedly provided on the outer side of the outer tube, the energizing mechanism is electrically connected to the coil, and both the outer tube and the inner tube are made of high-temperature resistant non-metallic materials.

[0016] The beneficial effects of this invention are as follows:

[0017] (1) This invention utilizes a rotating processing unit, a rotating conducting unit, a driving component, and a control component to achieve rotation and lateral movement control of the rotating processing unit. Combined with the heating control of the metal tube body by the energized coil, the plastic tube opening of the sleeve is electrofused and refilled and solidified in the joint cavity to complete the sealed connection. In addition, the stirring and reciprocating motion of the moving ring ensures uniform stirring of the electrofused plastic on the one hand, and by first sucking in and then extruding, the electrofused plastic is fully filled in the joint cavity to complete the condensation after the enhanced seal, avoiding the presence of pores and unevenness in the electrofusion, and further improving the sealing performance and stability of the connection after electromagnetic induction sealing electrofusion. The result is good performance.

[0018] (2) By reusing the rotating processing unit, rotating conducting unit, driving component and control component, the present invention re-energizes the coil and uses the heating effect to re-electrolyze the sealed pipe opening. After electrofusion, the pipe opening is transformed from solid to electrofused state by the rotation and pushing of the movable ring and pushed out of the joint cavity, thus completing the automatic contact and separation after sealing. During the separation process, the joint cavity is cleaned by the rotation and pushing process, which has the effects of quick separation and automatic cleaning.

[0019] (3) By utilizing the sampling component in the control component, after the pipeline is electrofused and sealed, when gas detection is required, the opening and closing of the sealing plug one and sealing plug two in the sampling component is controlled to achieve intermittent outward conduction of the conductive pipe. After isolation and connection, local sampling and detection of gas transported in the pipeline joint can be quickly achieved. The actual internal gas sampling and detection is convenient. While achieving convenient detection, it avoids a large amount of gas leakage, and the overall effect is good. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the outer tube and the metal tube of the present invention;

[0023] Figure 4 This is a schematic diagram of the engagement between the drive assembly and the rotational conduction part of the present invention;

[0024] Figure 5 This is a cross-sectional schematic diagram of the metal tube body of the present invention;

[0025] Figure 6 This is an exploded view of the rotating processing unit and the rotating conduction unit of the present invention;

[0026] Figure 7 This is a cross-sectional schematic diagram of the rotating conductive part of the present invention;

[0027] Figure 8 This is a cross-sectional schematic diagram of the control component and the acquisition component of the present invention;

[0028] Figure 9 for Figure 8 A magnified schematic diagram of the structure at point A in the middle.

[0029] In the diagram: 1. Outer tube; 2. Metal tube; 3. Inner tube; 4. Connector cavity; 5. Coil; 6. Power-conducting mechanism; 7. Adapter slot one; 8. Rotation processing part; 81. Movable ring; 82. Sleeve rod; 83. Spring; 84. Protrusion; 9. Rotation conduction part; 91. Gear ring; 92. Mounting ring; 93. Sleeve interface; 94. Adapter ring groove; 95. Sleeve; 10. Drive assembly; 101. Bracket; 102. Rotating shaft; 103. Gear 1; 104. Motor; 105. Gear 2; 11. Control assembly; 111. Bottom cylinder; 112. Piston plate; 113. Adjusting rod; 12. Picking assembly; 121. Conductor pipe; 122. Sealing plug 1; 123. Sealing plug 2; 13. Adaptor groove 2; 14. Ring groove; 15. Assembly ring cavity; 16. Connecting ring groove; 17. Connecting port; 18. Intermediate cavity. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] like Figures 1 to 9As shown, this embodiment of the invention provides an electromagnetic induction sealing electrofusion gas pipeline joint, including an outer pipe body 1, a metal pipe body 2 fixedly sleeved inside the outer pipe body 1, an inner pipe body 3 fixedly sleeved on the inner wall of the metal pipe body 2, a joint cavity 4 formed on the end face of the metal pipe body 2, a coil 5 wound around the outer side of the metal pipe body 2, the coil 5 being located outside the joint cavity 4, a rotational conducting part 9 rotatably installed inside the metal pipe body 2, and a rotation processing part 8 rotatably sleeved inside the joint cavity 4, the rotation processing part 8 being movably connected to the rotational conducting part 9, the outer pipe... A drive assembly 10 is fixedly provided on the outer side of the body 1. The drive assembly 10 drives the rotation processing part 8 to rotate. A control assembly 11 is fixedly provided on the bottom of the outer side of the outer tube body 1. The control assembly 11 controls the rotation processing part 8 to move left and right. The rotation processing part 8 includes a movable ring 81, a sleeve rod 82, a spring 83 and a protrusion 84. The protrusion 84 is fixed on the front side of the movable ring 81. The sleeve rod 82 is fixedly connected to the back side of the movable ring 81. One end of the spring 83 is fixed to the end of the sleeve rod 82, and the other end is fixedly connected to the rotation conduction part 9.

[0032] Example 1: In use, the pipe to be connected is inserted into the connector cavity 4 of the connector. Then, the energizing mechanism 6 is activated, causing the coil 5 to switch on and off. After the coil 5 is energized, a magnetic field is generated. The changing magnetic field causes eddy currents to be generated inside the metal tube 2. Eddy currents are generated inside the metal tube 2 located inside the coil 5. Under the action of the eddy currents, the temperature inside the metal tube 2 rises, heating the plastic tube opening in the connector cavity 4 into a molten state. The drive assembly 10 is activated, and the motor 104 drives the gear 105 to rotate, causing the meshing gear 103 to rotate. The gear 103 drives the meshing gear ring 9. 1. Rotation causes the rotation guide 9 to rotate, which in turn drives the rotating processing part 8 of the sleeve to rotate, causing the movable ring 81 to drive the protrusion 84 to rotate. At the same time, the adjusting rod 113 in the rotation control assembly 11 first drives the piston plate 112 to move down in the bottom cylinder 111, drawing air from the assembly chamber through the intermediate cavity 18 and the connecting port 17, and then drawing air from the sleeve interface 93. Under the negative pressure, the sleeve rod 82 moves, and in the rotating state, it pulls the movable ring 81 to move along the inside of the joint cavity 4, guiding the absorbed hot melt plastic to concentrate inward, and then... Rotate the adjusting rod 113 and re-inject gas into the socket 93, causing the socket rod 82 to drive the movable ring 81 to move in the opposite direction and reset. This pushes the sucked-in hot-melt plastic outwards and fills the joint cavity 4. As the coil 5 stops supplying power, the rotation of the movable ring 81 stops, the internal temperature of the metal tube 2 decreases, and the hot-melt and agitated plastic tube re-cools and solidifies, tightly nesting in the joint cavity 4 and simultaneously nesting on the front side of the movable ring 81, completing the electrofusion installation seal. When it is necessary to remove the connecting fittings from the pipe joint, the coil 5 is energized again, causing... The tube end fixed in the connector cavity 4 is electrically heated and melted. Then, the drive assembly 10 is started, and the rotation processing unit 8 is controlled to rotate by rotating the conduction part 9. The protrusion 84 stirs the electro-molded plastic, and the operating adjustment rod 113 drives the piston plate 112 to squeeze air into the communication port 17, so that the air pressure in the sleeve interface 93 increases, and drives the sleeve rod 82 to move laterally. The spring 83 is stretched. The sleeve rod 82 drives the movable ring 81 to move in the rotating state and squeezes the electro-molded tube end out of the connector cavity 4. At the same time as squeezing, the inner wall of the connector cavity 4 is cleaned, the connecting pipe is removed, and self-cleaning is completed simultaneously.

[0033] First, by utilizing the rotation processing unit 8, the rotation conduction unit 9, the drive assembly 10, and the control assembly 11, the rotation and lateral movement control of the rotation processing unit 8 are realized. In conjunction with the heating control of the metal tube 2 by the energized coil 5, the plastic tube opening of the sleeve is electrofused and refilled and solidified in the joint cavity 4 to complete the sealing connection. With the stirring and reciprocating action of the movable ring 81, on the one hand, the electrofused plastic is stirred evenly, and on the other hand, by first sucking in and then extruding, the electrofused plastic is fully filled in the joint cavity 4 to complete the condensation after the enhanced seal, avoiding the presence of pores and unevenness in the electrofusion, further improving the sealing performance and stability of the connection after electromagnetic induction sealing electrofusion, resulting in good performance.

[0034] Furthermore, by reusing the rotation processing unit 8, the rotation conduction unit 9, the drive assembly 10, and the control assembly 11, the coil 5 is re-energized, and the heating effect is used to re-electro-melt the sealed pipe opening. After electro-melting, the pipe, which has changed from a solid opening to an electro-melted state, is pushed out of the joint cavity 4, completing the automatic contact and separation after sealing. During the separation process, the rotation process is used to clean the inside of the joint cavity 4 after rotation and pushing, resulting in quick separation and automatic cleaning.

[0035] Example 2: When it is necessary to test the gas transported inside the connected pipeline, keep the sealing plug 123 sealing the guide pipe 121, open the sealing plug 122, and connect the external detection pipeline to the bottom of the guide pipe 121. Rotate the sealing plug 123 outward to make the inside of the guide pipe 121 connected, and introduce the gas transported inside into the detection mechanism for testing. Then rotate the sealing plug 123 back to its original position to reseal the guide pipe 121. Remove the external detection mechanism and screw the sealing plug 122 back on to complete the double sealing after the test.

[0036] First, by utilizing the sampling component 12 in the control component 11, after the pipeline is electrofused and sealed, when gas detection is required, the opening and closing of the sealing plug 122 and sealing plug 123 in the sampling component 12 are controlled to achieve intermittent outward conduction of the conductive pipe 121. After isolation and connection, local sampling and detection of gas transported in the pipeline joint can be quickly achieved. The actual internal gas sampling and detection is convenient, achieving convenient detection while avoiding large-scale gas leakage, resulting in good overall performance.

[0037] The metal tube 2 has an assembly chamber inside, which includes an annular groove 14, an assembly annular cavity 15, and a connecting annular groove 16. The annular groove 14, the assembly annular cavity 15, and the connecting annular groove 16 are all located inside the metal tube 2. The annular groove 14 is connected to the connector cavity 4, and the two sides of the assembly annular cavity 15 are connected to the annular groove 14 and the connecting annular groove 16, respectively.

[0038] By utilizing the assembly chamber to install the rotating guide 9 and achieve dynamic sealing, it is convenient to control the air pressure inside the assembly chamber, realize the movement control of the rotating processing unit 8, realize movement control in the rotating state, and complete the enhanced sealing and rapid separation.

[0039] Among them, the outer side of the outer tube 1 is provided with an adapter groove 7, and the outer side of the metal tube 2 is provided with an adapter groove 13. The adapter groove 13 and the adapter groove 7 correspond to each other and are connected. The adapter groove 13 is connected to the assembly ring cavity 15.

[0040] The gear 103 is fitted and installed using the adapter slot 7 and adapter slot 13, and is meshed with the gear ring 91 to achieve rotation control.

[0041] The rotating guide part 9 includes a gear ring 91, a mounting ring 92, a sleeve interface 93, an adapter ring groove 94, and a sleeve 95. There are two mounting rings 92, which are symmetrically fixed on both sides of the gear ring 91. The sleeve interface 93 is opened inside the mounting ring 92 and the gear ring 91 and is connected in sequence. The adapter ring groove 94 is opened on the outer side of one mounting ring 92 and corresponds to the position of the connecting ring groove 16. A connecting ring is fixedly sleeved inside one mounting ring 92. The other end of the spring 83 is fixed on the connecting ring. The sleeve rod 82 moves through the sleeve 95 and is sleeved in the sleeve interface 93. The sleeve rod 82 moves through the ring groove 14.

[0042] The rotating conductive part 9 enables the movable connection of the rotating processing part 8, which, while having an elastic sleeve, enables the rotating conductive part 9 to drive the rotating processing part 8 to rotate and move laterally.

[0043] The drive assembly 10 includes a bracket 101, a rotating shaft 102, a first gear 103, a motor 104, and a second gear 105. The bracket 101 is fixed to the top of the outer tube 1. The rotating shaft 102 is rotatably sleeved in the bracket 101. The first gear 103 is symmetrically sleeved at both ends of the rotating shaft 102. The motor 104 is fixed to the top of the bracket 101. The second gear 105 is fixedly sleeved on the outer surface of the output shaft of the motor 104 and meshes with the first gear 103. The lower part of the first gear 103 is located inside the first adapter groove 7 and the second adapter groove 13. The first gear 103 meshes with the gear ring 91.

[0044] By utilizing the drive assembly 10 to provide rotational power, the rotation of the two rotating guide parts 9 on both sides can be quickly controlled through meshing.

[0045] The metal tube 2 and the outer tube 1 are provided with a ventilation channel, which connects the assembly chamber with the control component 11. The ventilation channel includes an intermediate cavity 18 and a connecting port 17. The connecting port 17 is located at the bottom of the outer tube 1 and extends to the bottom surface of the metal tube 2, and is connected to the intermediate cavity 18. The intermediate cavity 18 is located on the inner wall of the metal tube 2 and its two ends are connected to the corresponding connecting annular grooves 16.

[0046] The control component 11 is connected to the assembly chamber through the air passage, thereby enabling air pressure control inside the socket 93 and movement control of the movable ring 81.

[0047] The control component 11 includes a bottom cylinder 111, a piston plate 112, and an adjusting rod 113. The bottom cylinder 111 is fixedly connected to the bottom of the outer tube 1 and communicates with the connecting port 17. The piston plate 112 is movably sleeved inside the bottom cylinder 111. The adjusting rod 113 is threadedly sleeved at the bottom of the bottom cylinder 111 and its upper end is fixedly connected to the piston plate 112.

[0048] By utilizing the rotation control of the adjusting rod 113 in the control assembly 11, the piston plate 112 is controlled to move up and down, thereby achieving air compression and suction, which in turn works with the intermediate cavity 18 and the connecting port 17 to achieve movement control of the rotation processing unit 8.

[0049] The control component 11 is internally fitted with a sampling component 12. The sampling component 12 includes a guide tube 121, a first sealing plug 122, and a second sealing plug 123. The upper end of the guide tube 121 passes through the communication port 17 and is fixedly fitted into the metal tube body 2, and passes through the inner tube body 3 and communicates with the inner cavity of the inner tube body 3. The lower end of the guide tube 121 passes through the piston plate 112 and the adjusting rod 113 and extends downward. The first sealing plug 122 is threadedly fitted into the bottom of the guide tube 121, and the second sealing plug 123 is threadedly fitted into the side of the guide tube 121 and controls the sealing inside the guide tube 121.

[0050] By utilizing the sealing and opening control of component 12, and in conjunction with an external detection mechanism, sampling and testing can be performed, enabling rapid gas detection without disassembly.

[0051] The outer tube 1 is fixedly provided with an energizing mechanism 6, which is electrically connected to the coil 5. Both the outer tube 1 and the inner tube 3 are made of high-temperature resistant non-metallic materials.

[0052] The working principle and usage process of this invention are as follows: In use, the pipe to be connected is inserted into the connector cavity 4 of the connector. Then, the energizing mechanism 6 is activated, causing the coil 5 to switch on and off. The energized coil 5 generates a magnetic field, and the changing magnetic field induces eddy currents inside the metal tube 2. Eddy currents are generated inside the metal tube 2 located inside the coil 5. Under the influence of these eddy currents, the temperature inside the metal tube 2 rises, heating the plastic tube opening in the connector cavity 4 to a molten state. The drive assembly 10 is then activated, and the motor 104 drives the second gear 105 to rotate, causing the meshing first gear 103 to rotate. The first gear 103 drives the meshing gear ring 91 to rotate, thereby causing the rotational conductive part 9 to rotate. The rotational conductive part 9 then drives the sleeved rotational processing part 8 to rotate. This causes the movable ring 81 to rotate, driving the protrusion 84 to rotate. Simultaneously, the adjusting rod 113 in the rotation control assembly 11 first moves the piston plate 112 downwards in the bottom cylinder 111, drawing air from the assembly chamber through the intermediate cavity 18 and the connecting port 17, and then drawing air from the sleeve interface 93. Under negative pressure, the sleeve rod 82 moves, and in its rotating state, pulls the movable ring 81 to move along the inside of the joint cavity 4, guiding the absorbed hot-melt plastic to concentrate inwards. Then, the adjusting rod 113 rotates in the opposite direction, and gas is reintroduced into the sleeve interface 93. This causes the sleeve rod 82 to move the movable ring 81 in the opposite direction to reset, pushing the absorbed hot-melt plastic outwards and filling the joint cavity 4. As the coil 5 stops supplying power, the process stops. As the movable ring 81 rotates, the internal temperature of the metal tube 2 decreases. The plastic tube opening, after being fused and agitated, cools and solidifies again, tightly nesting within the joint cavity 4 and simultaneously nesting on the front side of the movable ring 81, completing the electrofusion installation seal. When it is necessary to remove the connecting fitting from the pipe joint, the coil 5 is energized again, causing the fixedly fitted tube opening in the joint cavity 4 to be electrically heated and melted. Subsequently, the drive assembly 10 is activated, and the rotation of the rotating processing unit 8 is controlled by the rotating conductive part 9. The protrusion 84 agitates the electrofused plastic, and the operating adjustment rod 113 drives the piston plate 112 to compress air into the connecting port 17, causing the air pressure in the sleeve interface 93 to increase, which in turn causes the sleeve rod 82 to move laterally, stretching the spring 83. In the rotating state, the movable ring 81 is moved and the electrofusion pipe is squeezed out from the joint cavity 4. At the same time, the inner wall of the joint cavity 4 is cleaned, the connecting pipe is removed and self-cleaning is completed simultaneously. When it is necessary to test the gas transported inside the connected pipe, keep the sealing plug 123 sealing the guide pipe 121, open the sealing plug 122, and connect the external test pipe to the bottom of the guide pipe 121. Rotate the sealing plug 123 outward to make the inside of the guide pipe 121 connected, and the gas transported inside is introduced into the test mechanism for testing. Then rotate the sealing plug 123 back to reseal the guide pipe 121, remove the external test mechanism, and screw the sealing plug 122 back on to complete the double sealing after the test.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electromagnetic induction sealing electrofusion gas pipeline joint, comprising an outer pipe body (1), characterized in that: A metal tube (2) is fixedly sleeved inside the outer tube (1), and an inner tube (3) is fixedly sleeved on the inner wall of the metal tube (2). A connector cavity (4) is opened on the end face of the metal tube (2). A coil (5) is wound around the outside of the metal tube (2), and the coil (5) is located outside the connector cavity (4). A rotating conductive part (9) is rotatably installed inside the metal tube (2). A rotating processing part (8) is rotatably sleeved inside the connector cavity (4). The rotating processing part (8) is movably connected to the rotating conductive part (9). A driving assembly (10) is fixedly provided on the outside of the outer tube (1). The driving assembly (10) drives the rotating processing part (8) to rotate. A control assembly (11) is fixedly provided at the bottom of the outer side of the outer tube (1). The control assembly (11) controls the rotating processing part (8) to move left and right. The rotation processing part (8) includes a movable ring (81), a sleeve rod (82), a spring (83), and a protrusion (84). The protrusion (84) is fixed on the front side of the movable ring (81), the sleeve rod (82) is fixedly connected to the back side of the movable ring (81), one end of the spring (83) is fixed to the end of the sleeve rod (82), and the other end is fixedly connected to the rotation conduction part (9).

2. The electromagnetic induction sealing electrofusion gas pipeline joint according to claim 1, characterized in that: The metal tube (2) has an assembly chamber inside, which includes an annular groove (14), an assembly annular cavity (15), and a connecting annular groove (16). The annular groove (14), the assembly annular cavity (15), and the connecting annular groove (16) are all located inside the metal tube (2). The annular groove (14) is connected to the connector cavity (4), and the two sides of the assembly annular cavity (15) are connected to the annular groove (14) and the connecting annular groove (16) respectively.

3. The electromagnetic induction sealing electrofusion gas pipeline joint according to claim 2, characterized in that: The outer tube (1) has an adapter groove 1 (7) on its outer side, and the metal tube (2) has an adapter groove 2 (13) on its outer side. The adapter groove 2 (13) and the adapter groove 1 (7) are in one-to-one correspondence and connected. The adapter groove 2 (13) is connected to the assembly ring cavity (15).

4. The electromagnetic induction sealing electrofusion gas pipeline joint according to claim 3, characterized in that: The rotating guide part (9) includes a gear ring (91), a mounting ring (92), a sleeve (93), an adapter ring groove (94), and a sleeve (95). There are two mounting rings (92), which are symmetrically fixed on both sides of the gear ring (91). The sleeve (93) is opened inside the mounting ring (92) and the gear ring (91) and is connected in sequence. The adapter ring groove (94) is opened on the outer side of one of the mounting rings (92) and corresponds to the position of the connecting ring groove (16).

5. The electromagnetic induction sealing electrofusion gas pipeline joint according to claim 4, characterized in that: A connecting ring is fixedly sleeved inside the mounting ring (92), and the other end of the spring (83) is fixed on the connecting ring. The connecting rod (82) moves through the sleeve (95) and is sleeved in the sleeve interface (93). The connecting rod (82) moves through the ring groove (14).

6. The electromagnetic induction sealing electrofusion gas pipeline joint according to claim 5, characterized in that: The drive assembly (10) includes a bracket (101), a rotating shaft (102), a first gear (103), a motor (104), and a second gear (105). The bracket (101) is fixed to the top of the outer tube (1). The rotating shaft (102) is rotatably sleeved in the bracket (101). The first gear (103) is symmetrically sleeved at both ends of the rotating shaft (102). The motor (104) is fixed to the top of the bracket (101). The second gear (105) is fixedly sleeved on the outer surface of the output shaft of the motor (104) and meshes with the first gear (103). The lower part of the first gear (103) is located inside the first adapter groove (7) and the second adapter groove (13). The first gear (103) meshes with the gear ring (91).

7. The electromagnetic induction sealing electrofusion gas pipeline joint according to claim 6, characterized in that: The metal tube (2) and the outer tube (1) are provided with a ventilation channel, which connects the assembly chamber to the control component (11). The ventilation channel includes an intermediate cavity (18) and a connecting port (17). The connecting port (17) is located at the bottom of the outer tube (1) and extends to the bottom surface of the metal tube (2), and is connected to the intermediate cavity (18). The intermediate cavity (18) is located on the inner wall of the metal tube (2), and its two ends are connected to the corresponding connecting ring groove (16).

8. The electromagnetic induction sealing electrofusion gas pipeline joint according to claim 7, characterized in that: The control component (11) includes a bottom cylinder (111), a piston plate (112), and an adjusting rod (113). The bottom cylinder (111) is fixedly connected to the bottom of the outer tube (1) and communicates with the connecting port (17). The piston plate (112) is movably sleeved inside the bottom cylinder (111). The adjusting rod (113) is threadedly sleeved on the bottom of the bottom cylinder (111) and its upper end is fixedly connected to the piston plate (112).

9. The electromagnetic induction sealing electrofusion gas pipeline joint according to claim 8, characterized in that: The control component (11) is internally fitted with a sampling component (12). The sampling component (12) includes a guide tube (121), a sealing plug one (122), and a sealing plug two (123). The upper end of the guide tube (121) passes through the communication port (17) and is fixedly fitted in the metal tube body (2), and passes through the inner tube body (3) and communicates with the inner cavity of the inner tube body (3). The lower end of the guide tube (121) passes through the piston plate (112) and the adjusting rod (113) and extends downward. The sealing plug one (122) is threadedly fitted to the bottom of the guide tube (121), and the sealing plug two (123) is threadedly fitted to the side of the guide tube (121) and controls the sealing inside the guide tube (121).

10. The electromagnetic induction sealing electrofusion gas pipeline joint according to claim 1, characterized in that: The outer tube (1) is fixedly provided with an energizing mechanism (6), which is electrically connected to the coil (5). Both the outer tube (1) and the inner tube (3) are made of high-temperature resistant non-metallic materials.

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