Double-sided electric melting pipe fitting for composite pipe and connecting method

Abstract

The invention belongs to the technical field of electric smelting connecting pipe fittings, and particularly relates to a double-sided electric smelting pipe fitting for a composite pipe. Comprising a connecting electric melting ring, a connecting pipe, a rotating mechanism, a sliding mechanism, a telescopic pipe section and an outer melting sleeve which are connected in sequence. An electric melting ring is accommodated and connected in an electric melting groove of the connecting pipe, and a first electric heating wire and a first plug-in connector are arranged in the electric melting groove. The rotating mechanism comprises a rotating disc and a fixed disc which are rotationally connected, and the circular surface of the rotating disc is eccentrically and fixedly connected with a connecting pipe. The sliding mechanism is slidably connected with the round face of the fixed disc. A connecting line can be freely adjusted at the connecting position of the embedded pipe according to the position of a pipe opening to be connected, and therefore the problem that the connecting position of the embedded pipe is not coaxial and is difficult to connect is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of electric fusion connection pipe fittings, and particularly relates to a double-sided electric fusion pipe fitting for a composite pipe and a connection method. Background Art

[0002] During some construction operations, it is necessary to pre-buried composite pipelines in sections. After pre-buried multiple sections of composite pipelines at designated locations, the composite pipelines are connected one by one. When the pre-buried pipelines are long, they may be misaligned due to the bending of the pre-buried pipes themselves and installation errors. This may affect the connection of the pre-buried pipes and even make the connection impossible.

[0003] According to the patent "A flange compensation device and pipeline system" with publication number CN116085554A, the flange compensator provided by the device is provided with a rotating structure, which includes a fixed pipe and an adjusting pipe that are coaxially arranged and can rotate relative to each other. A first connecting pipe is eccentrically installed on the fixed pipe, and a second connecting pipe is eccentrically installed on the adjusting pipe. By connecting the second connecting pipe to another pipe through a flange, the connection of two non-coaxial or coaxial pipes can be achieved.

[0004] However, in the existing technology, flange compensators can only be used for effective adjustment on a fine scale when the deviation between the pre-buried pipes is extremely small, and are only applicable to short-spacing pipe connections; in actual construction applications, the distances between the pipes that need to be connected are often quite far apart, and the angles and directions of the pipe openings at the joints of the pre-buried pipes on the actual construction site are often inconsistent, and are subject to many restrictions from the construction terrain and on-site working conditions, making the applicability of existing flange compensators for connection operations very low. Summary of the Invention

[0005] In order to address the deficiencies in the prior art, the present invention provides a double-sided electric fusion pipe fitting for composite pipes and a connection method. The present invention can arbitrarily adjust the connection line at the connection of the embedded pipe according to the position of the pipe mouth to be connected by cooperating with a connecting electric fusion ring, a connecting pipe, a rotating mechanism, a sliding mechanism, a telescopic pipe section and an outer electric fusion sleeve, thereby solving the problem that the connection of the embedded pipe is difficult to connect due to different axes; in the present invention, the embedded pipe can be sleeved into the outer electric fusion sleeve and the inner electric fusion sleeve is inserted into the embedded pipe, and the inner and outer walls of the embedded pipe are simultaneously double-sidedly fused and connected, thereby greatly enhancing the connection strength between the embedded pipes and the sealing performance of the connection; in the present invention, when electric fusion is used to connect composite pipes with different inner and outer wall materials, the melting time of the inner and outer walls of the embedded pipe can be separately controlled, thereby achieving the best fusion connection effect of different materials.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] The present invention provides a double-sided electric fusion pipe fitting for composite pipes, comprising a connecting electric fusion ring, a connecting pipe, a rotating mechanism, a sliding mechanism, a telescopic pipe section, and an outer electric fusion sleeve, which are connected in sequence. The connecting electric fusion ring is housed within the electric fusion groove of the connecting pipe and is provided with a first heating wire and a first plug-in connector. The rotating mechanism includes a rotating disk and a fixed disk that are rotatably connected, and the connecting pipe is eccentrically fixedly connected to the circular surface of the rotating disk. The sliding mechanism is slidably connected to the circular surface of the fixed disk. One end of the telescopic pipe section is fixedly connected to the sliding mechanism, and the other end is provided with an inner electric fusion sleeve, a second plug-in connector, and a second heating wire. The outer electric fusion sleeve can be partially connected to the inner electric fusion sleeve with a gap, and is provided with a third plug-in connector and a third heating wire. The first connecting cavity in the connecting pipe, the second connecting cavity in the rotating mechanism, the third connecting cavity in the sliding mechanism, and the fourth connecting cavity in the telescopic pipe section are interconnected.

[0008] Furthermore, a plurality of column grooves are circumferentially arranged on the inner wall surface of the fixed disk, and a plurality of rollers are slidably accommodated in the corresponding column grooves, and the outer wall surface of the rotating disk is rollingly connected to the plurality of rollers.

[0009] Furthermore, the fixed plate has two slide rails on one side connected to the sliding mechanism. The sliding mechanism includes a slide groove and a slider. The slide groove and the corresponding slide rails slide with each other, and the slider can slide between the two slide rails along the length direction of the slide rails.

[0010] Furthermore, both ends of the slide rail are provided with blocks for blocking the slide groove, and the length of the slide groove is not less than the diameter of the third connecting cavity in the sliding mechanism.

[0011] Furthermore, the telescopic pipe segment includes a first pipe segment, a second pipe segment and multiple telescopic rods, the second pipe segment can be slidably and coaxially inserted into the first pipe segment, and the two ends of each telescopic rod are circumferentially fixed on the outer wall surfaces of the first pipe segment and the second pipe segment respectively, and the telescopic direction of the telescopic rod is consistent with the sliding direction of the second pipe segment.

[0012] Furthermore, the inner electric fusion sleeve includes a coaxially connected splicing section and an inner welding section, and the outer electric fusion sleeve includes a coaxially connected sleeve section and an outer welding section. The splicing section and the sleeve section are interference fit, and a gap is left between the inner welding section and the outer welding section.

[0013] Furthermore, as the rotating disk rotates, the projection of the outer edge of the first connecting cavity on the plane where the second connecting cavity is located is always located in the second connecting cavity, and as the sliding mechanism slides, the projection of the outer edge of the third connecting cavity on the plane where the second connecting cavity is located is always located in the second connecting cavity.

[0014] The present invention provides a double-sided electric fusion connection method for composite pipes. Based on the above-mentioned double-sided electric fusion pipe fittings for composite pipes, the method comprises: providing two sections of pre-buried pipe to be connected and two of the double-sided electric fusion pipe fittings for composite pipes. The two outer electric fusion sleeves are respectively sleeved onto the outer walls of the two sections of the pre-buried pipe, and the two inner electric fusion sleeves are respectively inserted into the inner walls of the two sections of the pre-buried pipe. Simultaneously, the rotating mechanism and the sliding mechanism are adjusted to change the height, longitudinal distance, and docking angle of the two connecting pipes so that the central axes of the two connecting pipes are aligned. The connecting electric fusion ring is placed into one of the electric fusion tanks, and the two telescopic pipe sections are extended to mate the two connecting pipes with each other, while the connecting electric fusion ring is simultaneously accommodated in the two electric fusion tanks. Electrical connections are then made to the first, second, and third plug connectors, causing the first, second, and third heating wires to fuse, thereby completing the connection of the two sections of the pre-buried pipe.

[0015] Furthermore, when the two outer fusion sleeves are respectively sleeved on the outer walls of the pipe openings of the two sections of the embedded pipe, and the two inner fusion sleeves are respectively inserted into the inner walls of the pipe openings of the two sections of the embedded pipe, the method includes: sleeve the embedded pipe into the outer fusion sleeve so that the outer welding section abuts against the outer wall of the embedded pipe. Insert the inner fusion sleeve into the embedded pipe so that the inner welding section abuts against the inner wall of the embedded pipe. Insert the inner fusion sleeve further into the embedded pipe so that the outer wall of the spliced ​​section abuts against the inner wall of the sleeved section, and the end face of the spliced ​​section abuts against one end face of the outer welding section.

[0016] Furthermore, simultaneously adjusting the rotating mechanism and the sliding mechanism to change the height and longitudinal distance between the two connecting tubes so that the central axes of the two connecting tubes align includes: rotating the two rotating disks to adjust the height distance between the two connecting tubes. When there are multiple positions where the two connecting tubes can be rotated to the same height, selecting the position with the smallest difference in longitudinal distance between the two tubes. Sliding the two sliding blocks to adjust the longitudinal distance between the two connecting tubes.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) In the present invention, the embedded pipe is fixed to the end of the telescopic pipe section by electric fusion connection through the inner and outer electric heating sleeves. After the two embedded pipe ends are connected to the ends of the two composite pipes with double-sided electric fusion pipe fittings, because the connecting pipe is eccentrically located on the rotating disk of the rotating mechanism, when the rotating disk rotates, the connecting pipe will make an orbital motion around the center of the rotating disk, so that the height and longitudinal distance between one connecting pipe and the other connecting pipe relative to it change until they are adjusted to the rotation position where the height of the two connecting pipes is consistent and the longitudinal distance is the shortest. The adjustment range is large and the longitudinal distance between the two connecting pipes is preliminarily adjusted. Then, the sliding movement between the sliding mechanism and the slide groove on the fixed disk further adjusts the longitudinal distance between the two connecting pipes until the central axes of the two connecting pipes can coincide, making the adjustment alignment range more precise. The second pipe section is extended out of the first pipe section by extending the telescopic rod on the telescopic pipe section, and the length of the telescopic pipe section is increased, thereby realizing the butt connection and electric fusion connection of the two connecting pipes. If the angles of the two connecting pipes deviate during butt connection, the sliding of the roller in the column groove can be used to change the angle of the rotating disk, thereby adjusting the butt connection angle of the connecting pipes, thereby realizing the precise butt connection and connection of pre-buried pipes at different angles. Through the cooperation of the connecting electric fusion ring, the connecting pipe, the rotating mechanism, the sliding mechanism, the telescopic pipe section and the outer electric fusion sleeve, the connection line and angle can be arbitrarily adjusted at the connection of the pre-buried pipe according to the position of the pipe opening to be connected, and the adjustment range is large and flexible. Even if the pipe openings of the two pre-buried pipes to be connected are far apart, or the deviation of the center axes of the two pipe openings is large, or the angle between the axes of the two pipe openings deviates, the pipe openings of the pre-buried pipes can be efficiently and accurately connected by electric fusion.

[0019] (2) In the present invention, since the gap size between the inner welding section of the inner electric fusion sleeve and the outer welding section of the outer electric fusion sleeve is consistent with the wall thickness of the embedded pipe to be connected, the pipe mouth of the embedded pipe can be inserted between the inner electric fusion sleeve and the outer electric fusion sleeve and abutted against each other, thereby improving the accuracy of the connection between the pipe mouth and the pipe fitting; and since electric heating wires are arranged on both the inner welding section and the outer welding section, after the corresponding plug-in connector is connected, the inner and outer walls of the embedded pipe can be simultaneously double-sidedly melted and connected. The setting of the double-sided electric fusion connection can greatly enhance the connection strength between the embedded pipes and the sealing performance of the connection.

[0020] (3) In the present invention, since the second heating wire on the inner welding section that abuts against the inner wall of the embedded pipe is independently controlled to melt by the second plug-in connector on the outer wall of the second pipe section, and the third heating wire on the outer welding section that abuts against the outer wall of the embedded pipe is independently controlled to melt by the third plug-in connector on the outer wall of the outer fusion sleeve, when the embedded pipe to be connected by electric fusion is a composite pipe with inner and outer wall materials of different materials, the second heating wire and the third heating wire can be controlled separately, so that the melting time of the inner and outer walls of the composite pipe can be controlled separately, thereby achieving the optimal melting time of different materials, which can effectively enhance the strength and effect of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of a double-sided electric fusion pipe fitting for composite pipes of the present invention. Figure 1 ;

[0022] Figure 2 This is a schematic structural diagram of a double-sided electric fusion pipe fitting for a composite pipe according to the present invention;

[0023] Figure 3 This is a schematic diagram of the butt connection of a double-sided electric fusion pipe fitting for a composite pipe according to the present invention;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of a double-sided electric fusion pipe fitting for a composite pipe of the present invention. Figure 1 ;

[0025] Figure 5 This is a schematic diagram of the cross-sectional structure of a double-sided electric fusion pipe fitting for a composite pipe according to the present invention. Figure 2 ;

[0026] Figure 6 This is a partial structural diagram of a double-sided electric fusion pipe fitting for a composite pipe according to the present invention;

[0027] Figure 7 This is a flow chart of a double-sided electric fusion connection method for composite pipes according to the present invention;

[0028] Figure 8 The present invention is a flow chart of another double-sided electric fusion connection method for composite pipes.

[0029] The reference numerals are as follows:

[0030] 10. Connecting pipe; 101. Electric melting tank; 102. First heating wire; 103. First plug connector; 104. First connecting cavity;

[0031] 20. Rotating mechanism; 201. Rotating disk; 202. Fixed disk; 203. Second connecting cavity; 204. Roller; 205. Slide rail; 206. Stopper; 207. Column slot;

[0032] 30. Sliding mechanism; 301. Third communication cavity; 302. Sliding groove; 303. Sliding block;

[0033] 40. Telescopic pipe section; 401. Internal fusion sleeve; 4011. Splicing section; 4012. Internal welding section; 402. Second plug connector; 403. Second heating wire; 404. Fourth communication cavity; 405. First pipe section; 406. Second pipe section; 407. Telescopic rod;

[0034] 50, external fusion sleeve; 501, third plug connector; 502, third heating wire; 503, socket section; 504, external welding section;

[0035] 60. Connect the electric fusion ring;

[0036] 100. Pre-buried pipes. DETAILED DESCRIPTION

[0037] The preferred embodiments of the present invention are described below in conjunction with the drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention. In addition, the embodiments of the present invention and the features in the embodiments may be combined with each other if there is no conflict.

[0038] refer to Figures 1 to 5 As shown, this embodiment provides a double-sided electric fusion pipe fitting for composite pipes, comprising a connecting electric fusion ring 60, a connecting pipe 10, a rotating mechanism 20, a sliding mechanism 30, a telescopic pipe section 40, and an outer electric fusion sleeve 50, which are connected in sequence. The connecting electric fusion ring 60 is housed within the electric fusion groove 101 of the connecting pipe 10 and is provided with a first heating wire 102 and a first plug connector 103. The rotating mechanism 20 includes a rotating disk 201 and a fixed disk 202, which are rotatably connected. The rotating disk 201 is eccentrically fixed to the circular surface of the connecting pipe 10. The sliding mechanism 30 is slidably connected to the circular surface of the fixed disk 202. The telescopic pipe section 40 is fixedly connected to the sliding mechanism 30 at one end and is provided with an inner electric fusion sleeve 401, a second plug connector 402, and a second heating wire 403 at the other end. The outer electric fusion sleeve 50 can be partially connected to the inner electric fusion sleeve 401 with a gap, and is provided with a third plug connector 501 and a third heating wire 502. The first communication cavity 104 in the connecting tube 10 , the second communication cavity 203 in the rotating mechanism 20 , the third communication cavity 301 in the sliding mechanism 30 and the fourth communication cavity 404 in the telescopic tube section 40 are interconnected.

[0039] In the present invention, the embedded pipe 100 is fixed to the end of the telescopic pipe section 40 by electric fusion connection through the inner electric heating sleeve 401 and the outer electric heating sleeve 50. After the two embedded pipes 100 are connected to the ends of the two composite pipes with double-sided electric fusion fittings, because the connecting pipe 10 is eccentrically located on the rotating disk 201 of the rotating mechanism 20, when the rotating disk 201 rotates, the connecting pipe 10 will orbit around the center of the rotating disk 201, so that the height distance and longitudinal distance between one connecting pipe 10 and the other connecting pipe 10 are changed until they are adjusted to The two connecting tubes 10 are of the same height and are at the rotation position with the shortest longitudinal distance. The adjustment range is large and the longitudinal distance between the two connecting tubes 10 is preliminarily adjusted. Then, by sliding between the sliding mechanism 30 and the slide groove 302 on the fixed plate 202, the longitudinal distance between the two connecting tubes 10 is further adjusted until the central axes of the two connecting tubes 10 can coincide, making the adjustment alignment range more accurate. Finally, by extending the telescopic rod 407 on the telescopic tube section 40, the second tube section 406 extends out of the first tube section 405, and the length of the telescopic tube section 40 is increased. Finally, the first plug connector 103 located on the outer wall of the connecting tube 10 is energized, and the first heating wire 102 electrically connected to the first plug connector 103 is located on the inner wall of the electric melting tank 101. The first heating wire 102 in the electric melting tank 101 and the connecting electric melting ring 40 are melted to achieve the electric fusion connection of the two connecting tubes 10; if the angles of the two connecting tubes 10 deviate during the docking, the sliding of the roller 204 in the column groove 207 can be used to change the angle of the rotating disk 201, thereby adjusting the docking angle of the connecting tubes 10 to achieve Precise docking and connection operations of embedded pipes 100 at different angles; through the cooperation of the connecting electric fusion ring 60, the connecting pipe 10, the rotating mechanism 20, the sliding mechanism 30, the telescopic pipe section 40 and the external electric fusion sleeve 50, the connection line and angle can be arbitrarily adjusted at the connection of the embedded pipe 100 according to the position of the pipe mouth to be connected, and the adjustment range is large and flexible. Even if the pipe mouths of the two embedded pipes 100 to be connected are far apart, or the deviation of the central axes of the two pipe mouths is large, or the angle between the axes of the two pipe mouths deviates, the pipe mouths of the embedded pipe 100 can be efficiently and accurately electrofused.

[0040] It is worth noting that in the present invention, because the second heating wire 403 on the inner welding section 4012 that abuts the inner wall of the embedded pipe 100 is separately controlled to melt by the second plug-in connector 402 on the outer wall surface of the second pipe section 406, and the third heating wire 502 on the outer welding section 504 that abuts the outer wall of the embedded pipe 100 is separately controlled to melt by the third plug-in connector 501 on the outer wall surface of the outer electric fusion sleeve 50, when the embedded pipe 100 to be connected by electric fusion is a composite pipe with different inner and outer wall materials, the second heating wire 403 and the third heating wire 502 can be controlled separately to control the melting time of the inner and outer walls of the composite pipe respectively, thereby achieving the optimal melting time of different materials, which can effectively enhance the strength and effect of the connection.

[0041] In this embodiment, a plurality of column grooves 207 are circumferentially arranged on the inner wall surface of the fixed disk 202 , and a plurality of rollers 204 are slidably accommodated in the corresponding column grooves 207 . The outer wall surface of the rotating disk 201 is rollingly connected to the plurality of rollers 204 .

[0042] Multiple rollers 204 are embedded in the column grooves 207 on the inner wall surface of the fixed disk 202 and can slide. Therefore, the sliding of the rollers 204 in the column grooves 207 can be used to change the angle of the rotating disk, thereby adjusting the docking angle of the connecting tube 10. The rollers 204 can also flexibly rotate along their own central axis. The cylindrical surface of the rollers 204 is tightly tangentially assembled with the outer arc surface of the rotating disk 201. The rotating disk 201 is placed at the center of the fixed disk 202, so the rotating disk 201 can be rotated along its own central axis together with the rotation of the multiple rollers 204, thereby driving the connecting tube 10 on the rotating disk 201 to rotate to adjust the height and longitudinal distance.

[0043] In this embodiment, two slide rails 205 are provided on one side of the fixed plate 202 connected to the sliding mechanism 30. The sliding mechanism 30 includes a slide groove 302 and a slider 303. The slide groove 302 and the corresponding slide rail 205 slide with each other, and the slider 303 can slide between the two slide rails 205 along the length direction of the slide rail 205.

[0044] In the present invention, the slider 303 is fixedly connected to the slide groove 302, and the slide groove 302 can slide and move with the slide rail 205 located on the surface of the fixed plate 202, so when the slide groove 302 slides on the slide rail 205, the slider 303 can also achieve sliding displacement. The slider 303 slides relative to the rotating mechanism 20, that is, the position of the rotating mechanism 20 and the connecting tube 10 connected to the rotating mechanism 20 can be adjusted by sliding.

[0045] In this embodiment, there are blocks 206 at both ends of the slide rail 205 for blocking the slide groove 302 , and the length of the slide groove 302 is not less than the diameter of the third communication cavity 301 in the sliding mechanism 30 .

[0046] In the present invention, the slide groove 302 slides along the length direction of the slide rail 205. When the slide groove 302 touches the blocks 206 set at both ends of the slide rail 205, the blocks 206 will block the sliding of the slide groove 302, thereby limiting the sliding range of the slider 303. Because the length of the slide groove 302 is not less than the length of the third communication cavity 301 in the sliding mechanism 30 along the sliding direction of the slide groove 302, no matter how the slide groove 302 and the slider 303 slide, the third communication cavity 301 will not be connected to the outside world, thereby ensuring the sealing of the pipe connection.

[0047] In this embodiment, the telescopic tube section 40 includes a first tube section 405, a second tube section 406 and a plurality of telescopic rods 407. The second tube section 406 is slidably coaxially inserted into the first tube section 405. The two ends of each telescopic rod 407 are circumferentially fixed on the outer wall surfaces of the first tube section 405 and the second tube section 406 respectively. The telescopic direction of the telescopic rod 407 is consistent with the sliding direction of the second tube section 406.

[0048] In the present invention, the two ends of the telescopic rod 407 are fixedly connected to the ear plates on the outer wall surfaces of the first pipe segment 405 and the second pipe segment 406 respectively. The telescopic rod 407 can be extended and shortened. The first pipe segment 405 is sleeved on the second pipe segment 406, and the second pipe segment 406 can slide in the first pipe segment 405. Therefore, the entire telescopic pipe segment 40 can be lengthened or shortened by extending and retracting the telescopic rod 407, so that the connection operation can be achieved even when the distance between the two embedded pipes 100 to be connected is large.

[0049] In this embodiment, the inner electric fusion sleeve 401 includes a coaxially connected splicing section 4011 and an inner welding section 4012, and the outer electric fusion sleeve 50 includes a coaxially connected sleeve section 503 and an outer welding section 504. The splicing section 4011 and the sleeve section 503 are interference fit, and a gap is left between the inner welding section 4012 and the outer welding section 504.

[0050] In the present invention, because the gap size left between the inner welding section 4012 of the inner electric fusion sleeve 401 and the outer welding section 504 of the outer electric fusion sleeve 50 is consistent with the wall thickness of the embedded pipe 100 to be connected, the pipe mouth of the embedded pipe 100 can be first inserted between the inner electric fusion sleeve 401 and the outer electric fusion sleeve and offset against each other, thereby improving the accuracy of the connection between the pipe mouth and the pipe fitting; and because electric heating wires are arranged on the inner welding section 4012 and the outer welding section 504, after connecting the corresponding plug-in connectors, the inner and outer walls of the embedded pipe 100 can be simultaneously double-sidedly melted and connected. The setting of the double-sided electric fusion connection can greatly enhance the connection strength between the embedded pipes 100 and the sealing performance of the connection.

[0051] In this embodiment, as the rotating disk 201 rotates, the outer edge of the first connecting cavity 104 is projected on the plane where the second connecting cavity 203 is located, and as the sliding mechanism 30 slides, the outer edge of the third connecting cavity 301 is projected on the plane where the second connecting cavity 203 is located, and is always located within the second connecting cavity 203.

[0052] In the present invention, since the entire surface of the first communication cavity 104 and the entire surface of the third communication cavity 301 are always connected only to the second communication cavity 203, no matter how the rotating mechanism 20 and the sliding mechanism 30 rotate and slide, the flow rate of the flow channel composed of the first communication cavity 104, the second communication cavity 203, the third communication cavity 301 and the fourth communication cavity 404 will not be obstructed and changed, thereby improving the stability of the pipe connection.

[0053] Figure 7 This is a flow chart of a double-sided electric fusion connection method for composite pipes provided by an embodiment of the present disclosure. Figure 7 As shown, the embodiment of the present disclosure provides a double-sided electric fusion connection method for composite pipes. Based on the aforementioned double-sided electric fusion connection pipe fittings for composite pipes, the connection method includes the following steps:

[0054] Step S101: providing two sections of pre-buried pipes 100 to be connected and two double-sided electric fusion pipe fittings for composite pipes.

[0055] Step S102 : The two outer fusion sleeves 50 are respectively sleeved on the outer walls of the pipe openings of the two sections of the embedded pipe 100 , and the two inner fusion sleeves 401 are respectively inserted into the inner walls of the pipe openings of the two sections of the embedded pipe 100 .

[0056] Step S103: Simultaneously adjust the rotating mechanism 20 and the sliding mechanism 30 to change the height, longitudinal distance and docking angle of the two connecting tubes 10 so that the central axes of the two connecting tubes 10 are consistent.

[0057] Step S104 : placing the connecting fusion ring 60 into one of the fusion tanks 101 , extending the two telescopic pipe sections 40 so that the two connecting pipes 10 are butted against each other, and the connecting fusion ring 60 is accommodated in the two fusion tanks 101 .

[0058] Step S105 : connecting the first plug connector 103 , the second plug connector 402 and the third plug connector 501 to electricity, so that the first heating wire 102 , the second heating wire 403 and the third heating wire 502 are melted, completing the connection of the two sections of the embedded pipe 100 .

[0059] Figure 8 FIG. 1 is a flow chart of another method for double-sided electric fusion connection of composite pipes provided in an embodiment of the present disclosure. Figure 8 As shown, in this embodiment, the connection method includes:

[0060] Step S201: providing two sections of pre-buried pipes 100 to be connected and two double-sided electric fusion pipe fittings for composite pipes.

[0061] For example, the two embedded pipes 100 have different heights and a longitudinal distance difference, and the distance between the pipe openings of the two embedded pipes 100 is not less than twice the minimum length of the double-sided electric fusion pipe fitting for the composite pipe.

[0062] Step S202 : The two outer fusion sleeves 50 are respectively sleeved on the outer walls of the pipe openings of the two sections of the embedded pipe 100 , and the two inner fusion sleeves 401 are respectively inserted into the inner walls of the pipe openings of the two sections of the embedded pipe 100 .

[0063] Exemplarily, step S202 is implemented by the following steps.

[0064] Step S2021 : inserting the embedded pipe 100 into the outer electric fusion sleeve 50 so that the outer welding section 504 abuts against the outer wall of the embedded pipe 100 .

[0065] Step S2022 : inserting the inner fusion sleeve 401 into the embedded pipe 100 so that the inner welding section 4012 abuts against the inner wall of the embedded pipe 100 .

[0066] Step S2023 : insert the inner fusion sleeve 401 further into the embedded pipe 100 so that the outer wall of the splicing section 4011 abuts against the inner wall of the sleeve section 503 , and the end face of the splicing section 4011 abuts against one end face of the outer welding section 504 .

[0067] It is worth noting that, because the gap size between the inner welding section 4012 of the inner electric fusion sleeve 401 and the outer welding section 504 of the outer electric fusion sleeve 50 is consistent with the wall thickness of the embedded pipe 100 to be connected, the pipe mouth of the embedded pipe 100 can be first inserted between the inner electric fusion sleeve 401 and the outer electric fusion sleeve and offset against each other, thereby improving the accuracy of the connection between the pipe mouth and the pipe fitting; and because electric heating wires are arranged on both the inner welding section 4012 and the outer welding section 504, after connecting the corresponding plug-in connectors, the inner and outer walls of the embedded pipe 100 can be simultaneously double-sidedly melted and connected.

[0068] Step S203: Simultaneously adjust the rotating mechanism 20 and the sliding mechanism 30 to change the height, longitudinal distance and docking angle of the two connecting tubes 10 so that the central axes of the two connecting tubes 10 are consistent.

[0069] Exemplarily, step S203 is implemented by the following steps.

[0070] Step S2031 : Rotate the two rotating disks 201 to adjust the height distance between the two connecting pipes 10 .

[0071] Step S2032: When there are multiple positions where the two connecting tubes 10 are rotated to have the same height, a position where the difference in the longitudinal distance between the two tubes is the smallest is selected.

[0072] Step S2033: Slide the two sliding blocks to adjust the longitudinal distance between the two connecting tubes 10.

[0073] Step S204 : placing the connecting fusion ring 60 into one of the fusion tanks 101 , extending the two telescopic pipe sections 40 so that the two connecting pipes 10 are butted against each other, and the connecting fusion ring 60 is accommodated in the two fusion tanks 101 .

[0074] Step S205 : connecting the first plug connector 103 , the second plug connector 402 and the third plug connector 501 to electricity, so that the first heating wire 102 , the second heating wire 403 and the third heating wire 502 are melted, completing the connection of the two sections of the embedded pipe 100 .

[0075] Step S206: Perform flaw detection inspection on the welds at each electric fusion welding connection.

[0076] While the basic concepts have been described above, it will be apparent to those skilled in the art that the detailed disclosure is merely illustrative and does not limit this specification. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and variations to this specification. Such modifications, improvements, and variations are suggested in this specification and remain within the spirit and scope of the exemplary embodiments of this specification.

[0077] It should be noted that if the descriptions, definitions, and / or usage of terms in the accompanying materials of this specification are inconsistent or conflicting with the contents of this specification, the descriptions, definitions and / or usage of terms in this specification shall prevail.

[0078] Finally, it should be understood that the embodiments described in this specification are intended only to illustrate the principles of the embodiments of this specification. Other variations are also possible and fall within the scope of this specification. Therefore, by way of example and not limitation, alternative configurations of the embodiments of this specification may be considered consistent with the teachings of this specification. Accordingly, the embodiments of this specification are not limited to the implementations explicitly described and illustrated in this specification.

Claims

1. A double-sided electric fusion pipe fitting for composite pipe, characterized in that: It comprises a connecting electric melting ring (60), a connecting pipe (10), a rotating mechanism (20), a sliding mechanism (30), a telescopic pipe section (40) and an outer electric melting sleeve (50) which are connected in sequence; The electric melting groove (101) of the connecting pipe (10) contains a connecting electric melting ring (60), and is provided with a first heating wire (102) and a first plug connector (103); The rotating mechanism (20) comprises a rotating disk (201) and a fixed disk (202) that are rotatably connected to each other, and the connecting pipe (10) is eccentrically fixedly connected to the circular surface of the rotating disk (201); The sliding mechanism (30) is slidably connected to the circular surface of the fixed disk (202); One end of the telescopic tube section (40) is fixedly connected to the sliding mechanism (30), and the other end is provided with an inner electric melting sleeve (401), a second plug connector (402) and a second heating wire (403); The outer electric fusion sleeve (50) and the inner electric fusion sleeve (401) can be partially sleeved with a gap, and are provided with a third plug connector (501) and a third heating wire (502); The first communication cavity (104) in the connecting tube (10), the second communication cavity (203) in the rotating mechanism (20), the third communication cavity (301) in the sliding mechanism (30), and the fourth communication cavity (404) in the telescopic tube section (40) are interconnected.

2. A double-sided electric fusion pipe fitting for composite pipe according to claim 1, characterized in that: A plurality of column grooves (207) are arranged circumferentially on the inner wall surface of the fixed disk (202), and a plurality of rollers (204) are slidably accommodated in the corresponding column grooves (207). The outer wall surface of the rotating disk (201) is rollingly connected to the plurality of rollers (204).

3. A double-sided electric fusion pipe fitting for composite pipe according to claim 1, characterized in that: The fixed plate (202) has two slide rails (205) on one side connected to the sliding mechanism (30). The sliding mechanism (30) includes a slide groove (302) and a slider (303). The slide groove (302) and the corresponding slide rail (205) are slidably matched with each other. The slider (303) can slide between the two slide rails (205) along the length direction of the slide rail (205).

4. A double-sided electric fusion pipe fitting for composite pipe according to claim 3, characterized in that: Both ends of the slide rail (205) are provided with blocks (206) for blocking the slide groove (302), and the length of the slide groove (302) is not less than the diameter of the third connecting cavity (301) in the sliding mechanism (30).

5. A double-sided electric fusion pipe fitting for composite pipe according to claim 1, characterized in that: The telescopic pipe section (40) comprises a first pipe section (405), a second pipe section (406) and a plurality of telescopic rods (407); the second pipe section (406) is slidably and coaxially inserted into the first pipe section (405); the two ends of each telescopic rod (407) are circumferentially fixed to the outer wall surfaces of the first pipe section (405) and the second pipe section (406); the telescopic direction of the telescopic rod (407) is consistent with the sliding direction of the second pipe section (406).

6. A double-sided electric fusion pipe fitting for composite pipe according to claim 1, characterized in that: The inner electric fusion sleeve (401) comprises a coaxially connected splicing section (4011) and an inner welding section (4012); the outer electric fusion sleeve (50) comprises a coaxially connected sleeve section (503) and an outer welding section (504); the splicing section (4011) and the sleeve section (503) are interference fit; a gap is left between the inner welding section (4012) and the outer welding section (504).

7. A double-sided electric fusion pipe fitting for composite pipe according to claim 1, characterized in that: As the rotating disk (201) rotates, the projection of the outer edge of the first connecting cavity (104) on the plane where the second connecting cavity (203) is located is always located within the second connecting cavity (203); as the sliding mechanism (30) slides, the projection of the outer edge of the third connecting cavity (301) on the plane where the second connecting cavity (203) is located is always located within the second connecting cavity (203).

8. A double-sided electric fusion connection method for composite pipes, characterized in that: Based on the double-sided electric fusion pipe fitting for composite pipe according to any one of claims 1 to 7, the double-sided electric fusion connection method for composite pipe comprises: S101: providing two sections of pre-buried pipes (100) to be connected and two double-sided electric fusion pipe fittings for the composite pipe; S102: The two outer electric fusion sleeves (50) are respectively sleeved on the outer walls of the pipe openings of the two sections of the embedded pipe (100), and the two inner electric fusion sleeves (401) are respectively inserted into the inner walls of the pipe openings of the two sections of the embedded pipe (100); S103: Simultaneously adjusting the rotating mechanism (20) and the sliding mechanism (30) to change the height, longitudinal distance, and docking angle of the two connecting tubes (10) so that the central axes of the two connecting tubes (10) are aligned; S104: placing the connecting electric melting ring (60) into one of the electric melting tanks (101), extending the two telescopic pipe sections (40) so that the two connecting pipes (10) are butted against each other, and the connecting electric melting ring (60) is accommodated in the two electric melting tanks (101); S105: connecting the first plug connector (103), the second plug connector (402) and the third plug connector (501) to electricity, so that the first heating wire (102), the second heating wire (403) and the third heating wire (502) are melted, completing the connection of the two sections of the embedded pipe (100).

9. The double-sided electric fusion connection method for composite pipes according to claim 8, characterized in that: When the two outer electric fusion sleeves (50) are respectively sleeved on the outer walls of the pipe openings of the two sections of the embedded pipe (100), and the two inner electric fusion sleeves (401) are respectively inserted into the inner walls of the pipe openings of the two sections of the embedded pipe (100), the method includes: The embedded pipe (100) is sleeved into the outer electric fusion sleeve (50) so that the outer welding section (504) abuts against the outer wall of the embedded pipe (100); Inserting the inner fusion sleeve (401) into the embedded pipe (100) so that the inner welding section (4012) abuts against the inner wall of the embedded pipe (100); The inner fusion sleeve (401) is further inserted into the embedded pipe (100), so that the outer wall of the splicing section (4011) abuts against the inner wall of the sleeve section (503), and the end face of the splicing section (4011) abuts against one end face of the outer welding section (504).

10. The double-sided electric fusion connection method for composite pipes according to claim 8, characterized in that: Simultaneously adjusting the rotating mechanism (20) and the sliding mechanism (30) to change the height and longitudinal distance of the two connecting tubes (10) so that the central axes of the two connecting tubes (10) are aligned comprises: Rotating the two rotating disks (201) to adjust the height distance between the two connecting pipes (10); When the two connecting tubes are rotated to have the same height at multiple positions, a position where the difference in longitudinal distance between the two tubes is the smallest is selected; The two sliding blocks are slid to adjust the longitudinal distance between the two connecting tubes (10).

Images