An inner-lined tubing production device for oil fields

Abstract

The present invention relates to the technical field of tubing processing, and in particular to a production device for lined tubing used in oil fields. It includes a support, on which a first fixed shell is fixedly connected. A first rotating ring is rotatably arranged in the first fixed shell, and a first sliding rod is slidably arranged in the first fixed shell. The first rotating ring is provided with a first sliding groove, and a guide rod that is slidably matched with the first sliding groove is fixedly connected to the first sliding rod. A second sliding rod is slidably arranged on the guide rod, and a first tension spring is installed between the second sliding rod and the guide rod. The support is fixedly connected with a fixing mechanism, and a pulling mechanism is arranged on the support. The present invention centeringly fixes the lined pipe and the steel pipe, avoiding scratching and wear between the lined pipe and the steel pipe during the processing of the lined pipe due to the bending of the lined pipe, and at the same time improving the applicability of the device. By means of the pulling mechanism and the driving mechanism, the resistance of the steel pipe to the lined pipe is reduced, and by means of the air jetting mechanism, the friction between the two is reduced, further improving the installation rate of the lined pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of tubing processing, and in particular to a production device for inner-lined tubing for oil fields. Background Art

[0002] The inner-lined tubing is composed of a steel pipe and an inner-lined pipe, and the steel pipe and the inner-lined pipe are in transitional fit. The steel pipe serves as a skeleton, and the inner-lined pipe is made of a corrosion-resistant material. The processing of the inner-lined tubing is to first insert the inner-lined pipe into the steel pipe, and then cut and trim the combined inner-lined tubing, and perform flanging and sealing to complete the production of the inner-lined tubing.

[0003] During the existing process of inserting the inner-lined pipe into the steel pipe, a pushing device is often used to push the inner-lined pipe into the steel pipe. Since the inner-lined pipe is long and has a lower hardness than the steel pipe, during the installation of inner-lined tubing of different specifications, the inner-lined pipe is prone to tilt and misalignment, resulting in scratching between the outer side wall of the inner-lined pipe and the end of the steel pipe, making the outer side wall of the inner-lined pipe uneven, causing the fit between the inner-lined pipe and the steel pipe to be not tight, and the fit between the inner-lined pipe and the steel pipe to be loose after processing, resulting in poor product quality of the produced inner-lined tubing.

[0004] In view of the deficiencies of the prior art, we have developed a production device for inner-lined tubing for oil fields. Summary of the Invention

[0005] In order to overcome the above technical problems, the present invention provides a production device for inner-lined tubing for oil fields.

[0006] The technical implementation solution of the present invention is: a production device for inner-lined tubing for oil fields, including a support, a control terminal is installed on the support, the support is rotatably provided with evenly distributed rotating rollers through a connecting frame, the support is fixedly connected with a first fixed housing, a first servo motor is installed in the first fixed housing, a first rotating ring is rotatably provided in the first fixed housing, the first rotating ring and the first servo motor are driven by a gear set, the first fixed housing is slidably provided with circumferentially equally spaced first sliding rods, the first rotating ring is provided with evenly distributed first sliding grooves, one end of the first sliding rod located in the first fixed housing is provided with an elastic block, and the surface of the elastic block is provided with evenly distributed protrusions for increasing the friction between the elastic block on the first sliding rod and the steel pipe. The other end of the first sliding rod is fixedly connected with a guide rod slidably matched with the adjacent first sliding groove. A second sliding rod is slidably provided on the guide rod. A ball is provided at one end of the second sliding rod pointing to the center of the first fixed housing. A first tension spring is installed between the other end of the second sliding rod and the guide rod. The support is fixedly connected with a fixing mechanism for centering the steel pipe. The support is provided with a pulling mechanism for pulling the inner-lined pipe into the steel pipe. The first servo motor, the fixing mechanism and the pulling mechanism are all electrically connected to the control terminal, and the steel pipe and the inner-lined pipe during the centering and clamping installation are utilized by the circumferentially equally spaced first sliding rods and second sliding rods.

[0007] Further, the fixing mechanism includes symmetrically distributed first n-shaped frames, and the symmetrically distributed first n-shaped frames are fixedly connected to the support. A sliding frame is limitedly slidably arranged on the first n-shaped frame. The upper cross-section of the sliding frame is V-shaped. The support is fixedly connected with an electric push rod through a connecting block. The telescopic end of the electric push rod is fixedly connected with symmetrically distributed sliding plates through a connecting rod. The sliding plates are provided with inclined grooves slidably matched with the sliding frame. The first rotating ring is provided with a second sliding groove. A third sliding rod is slidably arranged in the first fixed shell. The third sliding rod is slidably matched with the second sliding groove. The electric push rod is electrically connected to the control terminal.

[0008] Further, the pulling mechanism includes a second servo motor. The second servo motor is fixedly connected to the support through a connecting frame. The output shaft of the second servo motor is fixedly connected with a rotating disc. A pull rope is wound around the rotating disc. A fixing rod is installed at the end of the pull rope. A second fixed shell is limitedly slidably arranged on the fixing rod. A first rotating shell is rotatably arranged on the second fixed shell. The first rotating shell is rotatably provided with circumferentially distributed first swing rods. One end of the first swing rod close to the second fixed shell is conical. The first rotating shell is fixedly connected with a fixing plate. A fourth sliding rod is slidably arranged on the fixing plate. The fourth sliding rod is rotatably connected to the fixing rod. The fourth sliding rod is fixedly connected with a first fixing frame. The first fixing frame is provided with an inclined groove slidably matched with the first swing rod. A first spring is installed between the first fixing frame and the fixing plate. The support is provided with a shaping component for bending the inner lining tube. The second fixed shell is provided with a centering component for pulling the inner lining tube to move in the steel pipe. The second servo motor and the shaping component are both electrically connected to the control terminal.

[0009] Further, the shaping component includes a second n-shaped frame. The second n-shaped frame is fixedly connected to the support. A third fixed shell is slidably arranged on the second n-shaped frame. The third fixed shell is frustum-shaped, and a convex column is arranged inside the third fixed shell. A heating ring is arranged on the side wall of the third fixed shell. A fifth sliding rod is slidably arranged in the third fixed shell. The second n-shaped frame is provided with symmetrically distributed blind holes. The blind holes of the second n-shaped frame are in limit fit with the fifth sliding rod. A second pull spring is installed between the fifth sliding rod and the third fixed shell. The heating ring of the third fixed shell is electrically connected to the control terminal.

[0010] Further, the diameter of the convex column of the third fixed shell is slightly larger than the diameter of the first rotating shell, which is convenient for the first swing rod to fix the inner lining tube.

[0011] Further, the centering component includes circumferentially distributed spline rods. The circumferentially distributed spline rods are all fixedly connected to the second fixed shell. A sixth sliding rod is slidably arranged on the spline rod. The sixth sliding rod is provided with a guide wheel. A second spring is installed between the sixth sliding rod and the spline rod. The sixth sliding rod is fixedly connected with symmetrically distributed guide plates. The cross-section of the guide plate is a right trapezoid.

[0012] Further, it further includes a driving mechanism for assisting the movement of the inner lining pipe. The driving mechanism is arranged on the support. The driving mechanism includes symmetrically distributed second swing rods. The symmetrically distributed second swing rods are rotatably arranged on the support through support blocks. A torsion spring is arranged between the second swing rod and the support block. The support is fixedly connected with a second fixing frame. A second rotating shell is rotatably arranged on the second fixing frame. The second rotating shell is fixedly connected with a third servo motor. A second rotating ring is rotatably arranged on the second rotating shell. The second rotating ring and the third servo motor are driven by a gear set. The second rotating shell is slidably provided with seventh sliding rods evenly distributed circumferentially. The second rotating ring is provided with a guiding groove slidably matched with the seventh sliding rods. One end of the seventh sliding rod located inside the second rotating shell is rotatably provided with an electric rotating wheel. Both the third servo motor and the electric rotating wheel are electrically connected to the control terminal.

[0013] Further, the diameter of the electric rotating wheel gradually increases from the middle to both ends, and elastic members are arranged on the side wall of the electric rotating wheel. The elastic members are provided with evenly distributed annular grooves for increasing the friction force between the electric rotating wheel and the inner lining pipe.

[0014] Further, the support is fixedly connected with a driving motor through a connecting frame. The second rotating shell and the driving motor are driven by a gear set. The driving motor is electrically connected to the control terminal.

[0015] Further, it further includes a jetting mechanism arranged on the second fixing shell. The jetting mechanism is used to reduce the frictional resistance between the inner lining pipe and the steel pipe. The jetting mechanism includes symmetrically distributed telescopic plates. The symmetrically distributed telescopic plates are fixedly connected to the second fixing shell. The symmetrically distributed telescopic plates are fixedly connected with an elastic sleeve. The outer wall of the elastic sleeve is provided with evenly distributed ball bearings. An airbag is installed between the elastic sleeve and the second fixing shell. The airbag is communicated with an air inlet pipe. The second fixing shell is installed with an annular air duct. The side wall of the annular air duct is provided with evenly distributed nozzles. The airbag and the annular air duct are communicated through a pipeline. A one-way valve is arranged in the pipeline. The rotating disk is fixedly connected with a rotating frame. The rotating frame is used to clamp the air inlet pipe.

[0016] Compared with the prior art, the present invention has the following advantages: The present invention centers and fixes the inner lining pipe and the steel pipe through three first sliding rods and second sliding rods, avoiding scratching and abrasion between the bent inner lining pipe and the steel pipe during the processing of the inner lining pipe; combined with the four sliding frames in the fixing mechanism to center and fix the steel pipe, facilitating the processing and assembly of inner lining oil pipes of different specifications by the device. The left end of the inner lining pipe is limited by the third fixing shell in the pulling mechanism, and then the inner lining pipe is fixed and pulled to be inserted into the steel pipe by cooperating with three first swing rods to avoid the bending of the inner lining pipe. The four electric rotating wheels in the driving mechanism center and clamp the inner lining pipe and then rotate it forward and backward to reduce the resistance of the steel pipe to the inner lining pipe and improve the production rate. Gas medium is sprayed between the inner lining pipe and the steel pipe through the annular air duct in the jetting mechanism to reduce the friction force between the two, further improving the production rate of the inner lining pipe. Description of the Drawings

[0017] Figure 1 This is a three - dimensional structure schematic diagram of the present invention.

[0018] Figure 2 This is a three - dimensional structure schematic diagram of the fixing mechanism of the present invention.

[0019] Figure 3 This is a cross - sectional view of the shaping component of the present invention.

[0020] Figure 4 This is a three - dimensional structure schematic diagram of the pulling mechanism of the present invention.

[0021] Figure 5 This is a cross - sectional view of the pulling mechanism of the present invention.

[0022] Figure 6 This is a three - dimensional structure schematic diagram of the driving mechanism of the present invention.

[0023] Figure 7 This is a cross - sectional view of the driving mechanism of the present invention.

[0024] Figure 8 This is a cross - sectional view of the air - jetting mechanism of the present invention.

[0025] Reference Numerals in the Drawings: 1, support; 101, control terminal; 102, rotating roller; 103, first fixed shell; 104, first servo motor; 105, first rotating ring; 106, first sliding rod; 107, first sliding groove; 108, guiding rod; 109, second sliding rod; 110, first tension spring; 2, first n - shaped frame; 201, sliding frame; 202, electric push rod; 203, sliding plate; 204, second sliding groove; 205, third sliding rod; 3, second servo motor; 301, rotating disc; 302, fixed rod; 303, second fixed shell; 304, first rotating shell; 305, first swinging rod; 306, fixing plate; 307, fourth sliding rod; 308, first fixing frame; 309, first spring; 310, second n - shaped frame; 311, third fixed shell; 312, fifth sliding rod; 313, second tension spring; 4, spline rod; 401, sixth sliding rod; 402, second spring; 403, guiding plate; 5, second swinging rod; 501, second fixing frame; 502, second rotating shell; 503, third servo motor; 504, second rotating ring; 505, seventh sliding rod; 506, electric rotating wheel; 6, driving motor; 7, telescopic plate; 701, airbag; 702, elastic sleeve; 703, intake pipe; 704, annular air duct; 705, rotating frame. Detailed Description of the Invention

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Apparently, the described embodiments are only a part rather than all of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure. Embodiment 1

[0027] An inner-lined tubing production device for oil fields, as shown in reference to Figures 1 - 3 includes a support 1. A control terminal 101 is bolted to the left part of the support 1. A plurality of rotating rollers 102 are rotatably connected to the upper side surface of the support 1 through a connecting frame. The support 1 is bolted with a first fixed housing 103. A first servo motor 104 is bolted to the upper part of the first fixed housing 103. A first rotating ring 105 is rotatably connected to the first fixed housing 103. A gear set is provided between the first rotating ring 105 and the first servo motor 104. The gear set is composed of a spur gear and a ring gear. The spur gear is fixedly connected to the output shaft of the first servo motor 104, and the ring gear is fixedly connected to the first rotating ring 105. Three first sliding rods 106 are slidably connected to the first fixed housing 103. Three first sliding grooves 107 are provided on the first rotating ring 105. Rubber blocks are provided at the inner ends of the three first sliding rods 106, and protrusions are evenly distributed on the surface of the rubber blocks to increase the friction between the elastic blocks on the first sliding rods 106 and the steel pipe. Guide rods 108 that are slidably engaged with the adjacent first sliding grooves 107 are fixedly connected to the outer ends of the three first sliding rods 106. A second sliding rod 109 is slidably connected to the right part of the guide rod 108. Ball bearings are provided at the inner ends of the three second sliding rods 109. A first tension spring 110 is installed between the second sliding rod 109 and the adjacent guide rod 108. The support 1 is fixedly connected with a fixing mechanism for centering and fixing the steel pipe, which is convenient for processing inner-lined tubing of different specifications and improves the applicability of the device. The support 1 is provided with a pulling mechanism for pulling the inner-lined pipe into the steel pipe. The first servo motor 104, the fixing mechanism, and the pulling mechanism are all electrically connected to the control terminal 101. The three first sliding rods 106 and the second sliding rods 109 are used to center and clamp the steel pipe and the inner-lined pipe, avoiding bending of the inner-lined pipe and friction with the steel pipe during the process of inserting the inner-lined pipe into the steel pipe, and ensuring the tightness of the fit between the inner-lined pipe and the steel pipe after processing.

[0028] As shown in reference to Figure 2As shown, the fixing mechanism includes four first n-shaped frames 2, each of which is welded to the upper side of the support 1. Each first n-shaped frame 2 is provided with a sliding frame 201 in a limiting and sliding manner. The upper cross-section of the sliding frame 201 is V-shaped, which is used to clamp and fasten steel pipes with different diameters and make the center lines of the fixed steel pipes located at the same position. The support 1 is bolted with an electric push rod 202 through a connecting block. The telescopic end of the electric push rod 202 is fixedly connected with four sliding plates 203 through a connecting rod. The sliding plate 203 is provided with an inclined groove that slidably cooperates with the sliding frame 201. The first rotating ring 105 is provided with a second sliding groove 204. The first fixed shell 103 is slidably provided with a third sliding rod 205 for limiting and positioning the steel pipe. The third sliding rod 205 slidably cooperates with the second sliding groove 204. The electric push rod 202 is electrically connected to the control terminal 101.

[0029] Referring to Figure 2 , Figure 4 and Figure 5 As shown, the pulling mechanism includes a second servo motor 3. The second servo motor 3 is bolted to the left part of the support 1 through a connecting frame. The output shaft of the second servo motor 3 is fixedly connected with a rotating disc 301. A pull rope is wound around the rotating disc 301. The end of the pull rope is fixedly connected with a fixing rod 302. The fixing rod 302 is connected with a second fixed shell 303 in a limiting and sliding manner. The second fixed shell 303 is rotatably connected with a first rotating shell 304. The side wall of the first rotating shell 304 is provided with a step. The first rotating shell 304 is rotatably connected with three first swing rods 305. The left ends of the three first swing rods 305 are all conical, which are used to insert into the side wall of the inner lining pipe to pull the inner lining pipe into the steel pipe, avoiding the bending of the inner lining pipe during the insertion process. The first rotating shell 304 is welded with a fixing plate 306. The fixing plate 306 is connected with a fourth sliding rod 307 in a limiting and sliding manner. The left end of the fourth sliding rod 307 is rotatably connected with the fixing rod 302. The right end of the fourth sliding rod 307 is bolted with a first fixing frame 308. The first fixing frame 308 is provided with an inclined groove that slidably cooperates with the first swing rod 305. A first spring 309 is fixedly connected between the first fixing frame 308 and the fixing plate 306. The first spring 309 is sleeved on the fourth sliding rod 307. The support 1 is provided with a shaping component for bending the inner lining pipe. The second fixed shell 303 is provided with a centering component for pulling the inner lining pipe to move in the steel pipe. The second servo motor 3 and the shaping component are both electrically connected to the control terminal 101.

[0030] Referring to Figure 3As shown in the figure, the shaping component includes a second N-shaped frame 310. The second N-shaped frame 310 is bolted to the upper side of the support 1. A third fixed shell 311 is slidably connected to the second N-shaped frame 310. The third fixed shell 311 is frustum-shaped, and a convex column is provided inside the third fixed shell 311. The diameter of the convex column of the third fixed shell 311 is slightly larger than the diameter of the first rotating shell 304, which is used to bend the inner lining tube to facilitate the subsequent pulling of the inner lining tube into the steel pipe. A heating ring for softening the inner lining tube is provided on the side wall of the third fixed shell 311. A fifth sliding rod 312 is slidably connected to the third fixed shell 311. The second N-shaped frame 310 is provided with two blind holes, and the blind holes of the second N-shaped frame 310 are in limit fit with the fifth sliding rod 312. A second tension spring 313 is fixedly connected between the fifth sliding rod 312 and the third fixed shell 311. The heating ring of the third fixed shell 311 is electrically connected to the control terminal 101, and the second tension spring 313 is sleeved on the fifth sliding rod 312.

[0031] Refer to Figure 5 As shown in the figure, the centering component includes three spline rods 4. The three spline rods 4 are all bolted to the left end of the second fixed shell 303. A sixth sliding rod 401 is slidably connected to each spline rod 4. Guide wheels are provided at the outer ends of the three sixth sliding rods 401. A second spring 402 is fixedly connected between the sixth sliding rod 401 and the spline rod 4. Guide plates 403 are fixedly connected to the left and right sides of each sixth sliding rod 401. The cross-section of the guide plate 403 is a right trapezoid, which is used to guide and compress the movement of the sixth sliding rod 401, so that the second fixed shell 303 drives the parts connected thereto to move in the center of the steel pipe.

[0032] The operator uses an existing crane to move and place the steel pipe on the rotating roller 102 at the left part of the support 1, and then similarly places the inner lining tube on the rotating roller 102 at the right part of the support 1. After placing, the operator moves the steel pipe to the right on the rotating roller 102 and contacts the third sliding rod 205. Subsequently, the operator starts the electric push rod 202 through the control terminal 101. The electric push rod 202 pulls the four sliding plates 203 to move leftward through the connecting rod. The movement of the four sliding plates 203 causes the inclined grooves on them to squeeze the four sliding frames 201 to move closer together. The four sliding frames 201 squeeze and fix the steel pipe, and when fixing steel pipes with different diameters, the center line of the steel pipe always coincides with the center line of the first fixed shell 103.

[0033] After the steel pipe is fixed, the operator passes the rope from right to left through the steel pipe and connects and fixes it to the first fixing frame 308. Subsequently, the operator drives the parts connected thereto to move to the right by pulling the first fixing frame 308. At the same time, the second servo motor 3 is started through the control terminal 101. The second servo motor 3 drives the rotating disc 301 to rotate and release the pull rope, so that the trapezoidal inclined side of the guide plate 403 fits against the end of the steel pipe. Restricted and squeezed by the steel pipe, the three sixth sliding rods 401 move and compress the second spring 402, and finally the guide wheels of the sixth sliding rods 401 fit against the inner wall of the steel pipe. At the same time, the second fixed shell 303 is located in the middle of the steel pipe until the first fixing frame 308 drives the parts connected thereto to move through the steel pipe.

[0034] Then the operator pulls the fifth sliding rod 312 to move it out of the blind hole of the second n-shaped frame 310 to release the fixation of the third fixed shell 311. Subsequently, the operator pushes forward until the center line of the fifth sliding rod 312 coincides with the central axis of another blind hole of the second n-shaped frame 310. At this time, the third fixed shell 311 is located on the left side of the inner lining pipe. The operator releases the fifth sliding rod 312. Under the action of the second tension spring 313, the fifth sliding rod 312 moves and inserts into another blind hole of the second n-shaped frame 310 to re-complete the fixation of the third fixed shell 311.

[0035] After the adjustment of the third fixed shell 311 is completed, the operator starts the heating ring of the third fixed shell 311 through the control terminal 101 and pushes the inner lining pipe to move and insert it into the third fixed shell 311. The inner lining pipe is softened by heat and fits against the inner side wall of the third fixed shell 311. Then, the heating ring of the third fixed shell 311 is turned off through the control terminal 101, and wait for a period of time to make the inner lining pipe cool and take shape. After the temperature of the third fixed shell 311 drops, the operator performs the reverse operation above to move the third fixed shell 311 back to its original position.

[0036] After the inner lining tube is shaped, the operator inserts the first rotating shell 304 into the inner lining tube, making the left end of the inner lining tube fit with the step of the first rotating shell 304. Then the operator pulls the fixed rod 302 to move. The fixed rod 302 drives the fourth sliding rod 307 and the first fixing frame 308 to move and compresses the first spring 309. The movement of the first fixing frame 308 causes the inclined groove on it to squeeze the first swing rod 305, and the first swing rod 305 swings under the extrusion. Then the operator starts the second servo motor 3 through the control terminal 101 to slowly rotate the turntable 301 to wind the pulling rope. The pulling rope pulls the fixed rod 302 and the parts connected to it to move leftward together, making the conical end of the first swing rod 305 insert into the bent inner lining tube. Subsequently, the three guide plates 403 on the left contact the right end of the steel pipe and perform the above operations again, making the guide wheels of the three sixth sliding rods 401 contact the inner wall of the steel pipe again. Subsequently, under the traction of the pulling rope on the turntable 301, the deformed frustum end of the inner lining tube is inserted into the steel pipe.

[0037] Subsequently, for the operation of inserting the inner lining tube, the operator first starts the first servo motor 104 through the control terminal 101. The rotation of the first servo motor 104 drives the first rotating ring 105 to rotate through the spur gear and the gear ring. During the rotation of the first rotating ring 105, the second chute 204 first squeezes the third sliding rod 205 to move, making the upper end of the third sliding rod 205 retract into the side wall of the first fixed shell 103. At the same time, the three first chutes 107 move to squeeze the three groups of guide rods 108, the first sliding rod 106 and the second sliding rod 109 to move closer. The balls of the three second sliding rods 109 move to contact the outer wall of the inner lining tube first to perform centering clamping on the inner lining tube. Subsequently, the three groups of guide rods 108 and the first sliding rod 106 continue to move until the rubber blocks of the three first sliding rods 106 centeringly clamp the steel pipe. Subsequently, under the traction of the pulling rope on the turntable 301, the inner lining tube is centered and inserted into the steel pipe, avoiding scratching and wear between the inner lining tube and the steel pipe during the process of inserting the inner lining tube. Here, the first tension spring 110 is used to make the device suitable for the processing of inner lining oil pipes of different specifications and improve the applicability of the device. When the left end of the inner lining tube extends a certain length from the left end of the steel pipe, the operator stops the first servo motor 104 through the control terminal 101.

[0038] After the inner liner tube is inserted, the operator starts the second servo motor 3 through the control terminal 101 to release a certain amount of pulling rope. At the same time, the operator pushes the second fixed shell 303 to move to the right, so that the first swing rod 305 is pulled out from the inner liner tube. Under the action of the first spring 309, the first fixing frame 308 moves in the reverse direction and completes the reset. The first swing rod 305 will swing inside the side wall of the first rotating shell 304. Subsequently, the operator takes out the second fixed shell 303 and the first rotating shell 304. At this time, the widths of both ends of the inner liner tube are the same as those of both ends of the steel pipe, which is convenient for subsequent processing of the inner liner oil pipe. Finally, the combined inner liner oil pipe is moved to other processing links for processing. Embodiment 2

[0039] On the basis of Embodiment 1, with reference to Figure 6 and Figure 7 shown, there is also a driving mechanism for assisting the movement of the inner liner tube. The driving mechanism is arranged on the right part of the support 1. The driving mechanism includes four second swing rods 5 for limiting the inner liner tube. The four second swing rods 5 are all rotatably arranged on the upper side surface of the support 1 through support blocks. A torsion spring is provided between each second swing rod 5 and the adjacent support block. The support 1 is bolted with a second fixing frame 501. The second fixing frame 501 is rotatably connected with a second rotating shell 502. A third servo motor 503 is bolted to the upper part of the second rotating shell 502. The second rotating shell 502 is rotatably connected with a second rotating ring 504. The second rotating ring 504 and the third servo motor 503 are driven by a gear set. The gear set is composed of a spur gear and a toothed ring. Four seventh sliding rods 505 are slidably connected to the second rotating shell 502. The second rotating ring 504 is provided with four guide grooves. The four guide grooves of the second rotating ring 504 are respectively slidably matched with the four seventh sliding rods 505. The inner ends of the four seventh sliding rods 505 are all rotatably provided with electric rotating wheels 506. The diameter of the electric rotating wheels 506 gradually increases from the middle to both ends. And the side wall of the electric rotating wheel 506 is provided with an elastic member. The elastic member is provided with uniformly distributed annular grooves for increasing the friction between the electric rotating wheel 506 and the inner liner tube. The third servo motor 503 and the electric rotating wheels 506 are both electrically connected to the control terminal 101. The four electric rotating wheels 506 move closer to each other synchronously to centeringly clamp the inner liner tube, apply power to the inner liner tube, and accelerate the insertion of the inner liner tube into the steel pipe.

[0040] With reference to Figure 7 shown, the support 1 is bolted with a driving motor 6 through a connecting frame. The second rotating shell 502 and the driving motor 6 are driven by a gear set. The driving motor 6 is electrically connected to the control terminal 101. The gear set is composed of a spur gear and a toothed ring combination. By the driving motor 6, the four electric rotating wheels 506 rotate circumferentially, so that the inner liner tube is inserted into the steel pipe in a rotating manner, reducing the resistance of the steel pipe to the inner liner tube.

[0041] After the centering and fixing of the steel pipe are completed, the operator starts the third servo motor 503 through the control terminal 101. The third servo motor 503 drives the second rotating ring 504 to rotate through the spur gear and the gear ring. The rotation of the second rotating ring 504 squeezes the four seventh sliding rods 505 to move through the guiding grooves thereon until the four electric rotating wheels 506 center and clamp the inner lining pipe.

[0042] Then, repeat the above operations to soften and shape the inner lining pipe. After the shaping of the inner lining pipe is completed, the operator repeats the above operations to insert the conical end of the first swing rod 305 into the inner lining pipe, and then completes the fixation of the inner lining pipe. Subsequently, repeat the above operations to pull the inner lining pipe into the steel pipe. Then, the control terminal 101 starts the rotation of the four electric rotating wheels 506. The rotation of the four electric rotating wheels 506 pushes the inner lining pipe to move leftward to assist the inner lining pipe to be inserted into the middle of the steel pipe.

[0043] During the process of inserting the inner lining pipe into the steel pipe, the operator starts the driving motor 6 to rotate alternately forward and backward through the control terminal 101 at the same time. The driving motor 6 drives the second rotating shell 502 and the parts connected thereto to rotate alternately forward and backward through the spur gear and the gear ring. Finally, the four electric rotating wheels 506 twist the inner lining pipe alternately forward and backward, so that the inner lining pipe is inserted into the steel pipe in a twisted manner, reducing the resistance suffered by the inner lining pipe during the insertion process into the steel pipe. Subsequently, repeat the above operations. Embodiment 3

[0044] On the basis of Embodiment 2, referring to Figure 8 As shown, it further includes a jetting mechanism arranged on the second fixed shell 303. The jetting mechanism is used to reduce the frictional resistance between the inner lining pipe and the steel pipe. The jetting mechanism includes three groups of telescopic plates 7. Each group of telescopic plates 7 includes two that are symmetric left and right. The three groups of telescopic plates 7 are fixedly connected to the outer side wall of the second fixed shell 303. The outer ends of the three groups of telescopic plates 7 are fixedly connected with an elastic sleeve 702. The outer wall of the elastic sleeve 702 is provided with evenly distributed balls for reducing the frictional force between the elastic sleeve 702 and the steel pipe. An airbag 701 is installed between the elastic sleeve 702 and the second fixed shell 303. The left side of the airbag 701 is communicated with an air inlet pipe 703. The second fixed shell 303 is fixedly connected with an annular air duct 704. The left side wall of the annular air duct 704 is provided with a plurality of nozzles. The airbag 701 and the annular air duct 704 are communicated through a pipeline. A one-way valve is arranged in the pipeline. The rotating disc 301 is fixedly connected with a rotating frame 705. The rotating frame 705 is used to clamp the air inlet pipe 703 to inject a gas medium between the inner lining pipe and the steel pipe, reduce the frictional force between the two, and accelerate the insertion of the inner lining pipe into the steel pipe.

[0045] During the process of inserting the inner lining pipe into the steel pipe in a rotational manner, the operator continuously injects gas into the intake pipe 703 through an external air pump. The gas in the intake pipe 703 enters the airbag 701, causing it to squeeze the elastic sleeve 702 and expand. Accordingly, the telescopic plate 7 expands and contracts. After the expanded elastic sleeve 702 contacts the inner wall of the steel pipe, the airbag 701 cannot continue to expand outward. The pressure in the airbag 701 increases, causing the one-way valve on the pipeline of the annular gas guide pipe 704 to open. The gas enters the annular gas guide pipe 704 and is ejected from several nozzles thereon. Since the airbag 701 expands and the elastic sleeve 702 contacts the inner wall of the steel pipe, and at the same time during the process of the inner lining pipe being inserted into the steel pipe in a torsional manner, a part of the ejected gas flows through the gap between the inner lining pipe and the steel pipe, resulting in a small amount of gas medium between the inner lining pipe and the steel pipe, further reducing the friction between the inner lining pipe and the steel pipe and enabling the inner lining pipe to be quickly and easily inserted into the steel pipe. When the elastic sleeve 702 disengages from the contact with the steel pipe, the gas injection into the intake pipe 703 stops. Since the inner lining pipe in the inner lining oil pipe and the steel pipe are in a transitional fit, during the subsequent process of torsionally pulling the inner lining pipe to the left, under the rotation and pulling of the inner lining pipe, without external force hindrance at this time, the movement of the inner lining pipe will squeeze and expel the gas between it and the steel pipe, causing the inner lining pipe to closely adhere to the inner wall of the steel pipe. After installation, both ends of the inner lining pipe extend beyond the steel pipe.

[0046] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention.

Claims

1. An inner-lined tubing production device for oil fields, comprising a support (1), a control terminal (101) is installed on the support (1), and evenly distributed rotating rollers (102) are rotatably arranged on the support (1) through a connecting frame, and it is characterized in that: The support (1) is fixedly connected with a first fixed shell (103). A first servo motor (104) is installed on the first fixed shell (103). A first rotating ring (105) is rotatably arranged on the first fixed shell (103). The first rotating ring (105) and the first servo motor (104) are driven by a gear set. First sliding rods (106) are circumferentially and equally spaced and slidably arranged on the first fixed shell (103). The first rotating ring (105) is provided with uniformly distributed first sliding grooves (107). One end of the first sliding rod (106) located inside the first fixed shell (103) is provided with an elastic block, and the surface of the elastic block is provided with uniformly distributed protrusions for increasing the friction between the elastic block on the first sliding rod (106) and the steel pipe. The other end of the first sliding rod (106) is fixedly connected with a guide rod (108) that slidably cooperates with the adjacent first sliding groove (107). A second sliding rod (109) is slidably arranged on the guide rod (108). A ball is provided at one end of the second sliding rod (109) pointing to the center of the first fixed shell (103). A first tension spring (110) is installed between the other end of the second sliding rod (109) and the guide rod (108). The support (1) is fixedly connected with a fixing mechanism for centering the steel pipe. The support (1) is provided with a pulling mechanism for pulling the inner lining pipe into the steel pipe. The first servo motor (104), the fixing mechanism, and the pulling mechanism are all electrically connected to the control terminal (101). The steel pipe and the inner lining pipe during the centering and clamping installation process are centered by the circumferentially and equally spaced first sliding rods (106) and second sliding rods (109); The pulling mechanism includes a second servo motor (3). The second servo motor (3) is fixedly connected to the support (1) through a connecting frame. The output shaft of the second servo motor (3) is fixedly connected with a rotating disk (301). A pulling rope is wound around the rotating disk (301). A fixing rod (302) is installed at the end of the pulling rope. The fixing rod (302) is limited and slidably arranged in a second fixed shell (303). A first rotating shell (304) is rotatably arranged on the second fixed shell (303). First swinging rods (305) are circumferentially distributed and rotatably arranged on the first rotating shell (304). One end of the first swinging rod (305) close to the second fixed shell (303) is conical. The first rotating shell (304) is fixedly connected with a fixing plate (306). A fourth sliding rod (307) is slidably arranged on the fixing plate (306). The fourth sliding rod (307) is rotatably connected with the fixing rod (302). The fourth sliding rod (307) is fixedly connected with a first fixing frame (308). The first fixing frame (308) is provided with an inclined groove that slidably cooperates with the first swinging rod (305). A first spring (309) is installed between the first fixing frame (308) and the fixing plate (306). The support (1) is provided with a shaping component for bending the inner lining pipe. The second fixed shell (303) is provided with a centering component for pulling the inner lining pipe to move inside the steel pipe. The second servo motor (3) and the shaping component are both electrically connected to the control terminal (101).

2. The production device for the lined tubing used in oil fields according to claim 1, wherein: The fixing mechanism includes symmetrically distributed first n-shaped frames (2). The symmetrically distributed first n-shaped frames (2) are fixedly connected to the support (1). A sliding frame (201) is provided on the first n-shaped frame (2) with limited sliding. The upper cross-section of the sliding frame (201) is V-shaped. The support (1) is fixedly connected with an electric push rod (202) through a connecting block. The telescopic end of the electric push rod (202) is fixedly connected with symmetrically distributed sliding plates (203) through a connecting rod. The sliding plates (203) are provided with inclined grooves that are slidably matched with the sliding frame (201). The first rotating ring (105) is provided with a second sliding groove (204). A third sliding rod (205) is slidably arranged in the first fixed shell (103). The third sliding rod (205) is slidably matched with the second sliding groove (204). The electric push rod (202) is electrically connected to the control terminal (101).

3. The production device for an inner-lined tubing for oil fields according to claim 1, characterized in that: The shaping component includes a second n-shaped frame (310). The second n-shaped frame (310) is fixedly connected to the support (1). A third fixed shell (311) is slidably arranged on the second n-shaped frame (310). The third fixed shell (311) is frustum-shaped, and a convex column is arranged inside the third fixed shell (311). A heating ring is arranged on the side wall of the third fixed shell (311). A fifth sliding rod (312) is slidably arranged in the third fixed shell (311). The second n-shaped frame (310) is provided with symmetrically distributed blind holes. The blind holes of the second n-shaped frame (310) are in limit cooperation with the fifth sliding rod (312). A second tension spring (313) is installed between the fifth sliding rod (312) and the third fixed shell (311). The heating ring of the third fixed shell (311) is electrically connected to the control terminal (101).

4. The production device for an inner-lined tubing used in oil fields according to claim 3, characterized in that: The diameter of the convex column of the third fixed shell (311) is slightly larger than the diameter of the first rotating shell (304), which is convenient for the first swing rod (305) to fix the inner lining tube.

5. A production device for an inner-lined oil pipe used in an oil field according to claim 1, characterized in that: The centering component includes circumferentially distributed spline rods (4). The circumferentially distributed spline rods (4) are fixedly connected to the second fixed shell (303). The spline rods (4) are slidably provided with sixth sliding rods (401). The sixth sliding rods (401) are provided with guide wheels. A second spring (402) is installed between the sixth sliding rods (401) and the spline rods (4). The sixth sliding rods (401) are fixedly connected with symmetrically distributed guide plates (403). The cross-section of the guide plates (403) is a right trapezoid.

6. A production device for an inner-lined tubing used in oil fields according to claim 1, characterized in that: The drive mechanism is also provided for assisting the movement of the inner liner tube. The drive mechanism is provided on the support (1). The drive mechanism includes symmetrically distributed second swinging rods (5). The symmetrically distributed second swinging rods (5) are all rotatably provided on the support (1) via support blocks. A torsion spring is provided between the second swinging rods (5) and the support block. The support (1) is fixedly connected to a second fixing frame (501). The second fixing frame (501) is rotatably provided with a second rotating shell (502). The second rotating shell (502) is fixedly connected to a third servo motor (503). The second rotating shell (502) is rotatably provided with a third servo motor (503). A second rotating ring (504) is provided, and the second rotating ring (504) and the third servo motor (503) are driven by a gear set. The second rotating shell (502) is slidably provided with seventh sliding rods (505) distributed at equal intervals in the circumferential direction. The second rotating ring (504) is provided with a guide groove slidably matched with the seventh sliding rod (505). An electric rotating wheel (506) is rotatably provided at one end of the seventh sliding rod (505) located in the second rotating shell (502). The third servo motor (503) and the electric rotating wheel (506) are both electrically connected to the control terminal (101).

7. An oilfield inner-lined tubing production device according to claim 6, characterized in that: The diameter of the electric wheel (506) gradually increases from the middle to both ends, and the side wall of the electric wheel (506) is provided with an elastic member, and the elastic member is provided with evenly distributed annular grooves for increasing the friction between the electric wheel (506) and the inner liner pipe.

8. A production device for an internally lined tubing for oil fields according to claim 6, characterized in that: The support (1) is fixedly connected to a driving motor (6) via a connecting frame, the second rotating shell (502) and the driving motor (6) are driven via a gear set, and the driving motor (6) is electrically connected to the control terminal (101).

9. A production device for an inner-lined tubing for oil fields according to claim 3, characterized in that: The invention also includes an air jet mechanism disposed on the second fixed shell (303), the air jet mechanism being used to reduce the friction resistance between the inner liner pipe and the steel pipe, the air jet mechanism comprising symmetrically distributed telescopic plates (7), the symmetrically distributed telescopic plates (7) being fixedly connected to the second fixed shell (303), the symmetrically distributed telescopic plates (7) being fixedly connected to an elastic sleeve (702), the outer wall of the elastic sleeve (702) being provided with evenly distributed balls, an air bag (701) being installed between the elastic sleeve (702) and the second fixed shell (303), the air bag (701) being connected to an air intake pipe (703), an annular air guide pipe (704) being installed on the second fixed shell (303), the side wall of the annular air guide pipe (704) being provided with evenly distributed nozzles, the air bag (701) being connected to the annular air guide pipe (704) through a pipeline, a one-way valve being provided in the pipeline, and a rotating frame (705) being fixedly connected to the rotating disk (301), the rotating frame (705) being used to clamp the air intake pipe (703).

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