Preparation device and method of wear-resistant and corrosion-resistant bimetal composite pipe

Abstract

The application discloses a kind of wear-resistant corrosion-resistant bimetallic composite pipe preparation device and method thereof, device includes: main unit, it includes: base, a plurality of outer pipeline positioning mechanisms are set on the base;Feeding unit, it includes: mounting base plate, first motor is installed and set on the mounting base plate, guide rail is set between the base and mounting base plate, threaded rod is fixedly set on the first motor, and threaded plate is set on the threaded rod, pusher assembly is arranged on the threaded plate, the end of the threaded rod away from mounting base plate is rotatably connected on base, advancing unit, it includes: mounting platform, U-shaped seat is set on the mounting platform.The application is heated to inner lining pipe by hot press head, while extruding, inner lining pipe is heated quickly in fixed point, in this way extruding and preheating, so that inner lining pipe can be continuously locally quickly plastic deformation, thereby adhering to the inner wall of outer pipeline.

Description

Technical Field

[0001] The present invention relates to the technical field of bimetallic composite pipe preparation, and in particular to a wear-resistant and corrosion-resistant bimetallic composite pipe preparation device and method. Background Art

[0002] Bimetallic composite pipe is a metal pipe formed by combining two inner and outer metal pipes through plastic or non-plastic forming methods. Based on the material choices of the inner and outer pipes, the two metal pipes are selected to be wear-resistant and corrosion-resistant, resulting in the composite pipe having excellent wear and corrosion resistance. Bimetallic composite pipes can be used in water pipelines, chemical raw material pipelines, oil and gas pipelines, and other applications. The research team focuses on the theoretical analysis and simulation of the interface bonding and strengthening of bimetallic composite pipes, as well as bimetallic composite pipes for water pipelines.

[0003] The existing mechanical spinning method utilizes the mechanical properties of two different materials: the elastic deformation range of the outer base pipe (carbon steel pipe) and the low yield strength of the inner liner (stainless steel pipe). Under the extrusion of the spiral feed of the rolling machine, the inner liner is subjected to continuous localized plastic deformation, while the outer base pipe is always kept within the elastic deformation range. When the external force is removed, the outer base pipe elastically contracts, while the inner liner cannot contract due to its plastic deformation. However, this method exerts a high extrusion force on the inner pipe, and the pipe is not fully preheated during the composite process, resulting in relatively low extrusion and composite efficiency. Summary of the Invention

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0005] In view of the problems existing in the above-mentioned existing wear-resistant and corrosion-resistant bimetallic composite pipe preparation device and method, the present invention is proposed.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A wear-resistant and corrosion-resistant bimetallic composite pipe preparation device, comprising:

[0008] The main unit comprises: a base, and a plurality of outer pipe positioning mechanisms arranged on the base;

[0009] A feeding unit, comprising: a mounting base, a first motor mounted on the mounting base, a guide rail disposed between the base and the mounting base, a threaded rod fixedly disposed on the first motor, and a threaded plate disposed on the threaded rod, wherein the threaded plate is provided with a pusher assembly, and an end of the threaded rod away from the mounting base is rotatably connected to the base;

[0010] The propulsion unit includes: a mounting platform, a U-shaped seat arranged on the mounting platform, a clamping assembly arranged on the U-shaped seat, a plurality of fixed rods arranged on the mounting platform, and side plates arranged on the plurality of fixed rods on both sides, a plurality of guide rollers are rotatably connected to the side plates on both sides at equal intervals, an extrusion rod core is arranged on the plurality of guide rollers, and the extrusion rod core is transported by the clamping assembly, and a hot pressing head is arranged at one end of the extrusion rod core.

[0011] As a preferred solution of the wear-resistant and corrosion-resistant bimetallic composite pipe preparation device described in the present invention, wherein: an electric heating component is arranged in the hot pressing head, and a wiring tube for powering the electric heating component is arranged in the extrusion rod core, and the hot pressing head includes an integrally formed cylindrical end and a conical end, and the conical end faces outward.

[0012] As a preferred solution of the wear-resistant and corrosion-resistant bimetallic composite pipe preparation device described in the present invention, the pushing assembly includes: a pushing seat fixedly arranged on the upper end of the threaded plate, a connecting rod symmetrically fixedly connected to the two ends of the pushing seat, a moving block fixedly connected to the bottom end of the connecting rod, a roller rotatably connected to the moving block, and the moving block is slidably connected in the guide rail, and the roller is in rolling contact with the bottom wall of the guide rail.

[0013] As a preferred solution of the wear-resistant and corrosion-resistant bimetallic composite pipe preparation device described in the present invention, the pinching assembly includes a second motor installed on a U-shaped seat, an upper pinching roller arranged on the output end of the second motor, and a lower pinching roller is also rotatably connected to the U-shaped seat. The central rotating shafts of the upper pinching roller and the lower pinching roller pass through one end of the U-shaped seat and are fixedly connected to a first gear and a second gear, and the first gear is meshed with the second gear.

[0014] As a preferred solution of the wear-resistant and corrosion-resistant bimetallic composite pipe preparation device described in the present invention, the external pipe positioning mechanism includes: a plurality of support rods fixedly connected to the base at equal intervals, a lower arc-shaped pressure block fixedly connected to the upper end of the support rod, and a fixed platform fixedly connected to the base at equal intervals, a telescopic cylinder is fixedly installed on the fixed platform, and the output end of the telescopic cylinder is fixedly connected to the upper arc-shaped pressure block, and the upper arc-shaped pressure block corresponds to the lower arc-shaped pressure block in a one-to-one manner.

[0015] As a preferred scheme of the preparation device of the wear-resistant and corrosion-resistant bimetallic composite pipe, the base is further fixedly connected with a support on one side close to the feeding unit, and a guide wheel is rotatably connected to the support.

[0016] As a preferred scheme of the preparation device of the wear-resistant and corrosion-resistant bimetallic composite pipe, the base is further fixedly connected with a support on one side close to the feeding unit, and a guide wheel is rotatably connected to the support.

[0017] The preparation method using the preparation device of the wear-resistant and corrosion-resistant bimetallic composite pipe comprises the following steps:

[0018] Step one: the outer pipe is placed on the outer pipe positioning mechanism, and the upper arc-shaped pressing block is driven by the telescopic air cylinder to be clamped and positioned;

[0019] Step two: the inner lining pipe is placed on the guide wheel, one end of the inner lining pipe is inserted into the center sleeve of the pushing seat, then the threaded rod is driven to rotate by the first motor, so that the pushing seat starts to advance, and the inner lining pipe is slowly inserted until the other end is aligned with one end of the outer pipe;

[0020] Step three: the hot pressing head is started to heat, the upper pinch roll and the lower pinch roll are driven to rotate by the second motor, and the extrusion rod core starts to move forward, the tapered end of the hot pressing head rapidly heats the inner lining pipe, and in this way of extruding and preheating at the same time, the inner lining pipe can continuously and locally deform plastically, so as to be attached to the inner wall of the outer pipe;

[0021] Step four: after the inner lining pipe in the outer pipe is deformed, the pinch roll assembly reverses to drive the hot pressing head to return, at this time, the outer cutting tool is used to cut off the excess part at both ends of the outer pipe and polish the end face, so as to complete the composite processing work.

[0022] The beneficial effects of the present application are as follows:

[0023] 1. The inner lining pipe is heated by the hot pressing head, and the inner lining pipe is rapidly heated at the same time of extrusion, so that the inner lining pipe can continuously and locally deform plastically in this way of extruding and preheating at the same time, so as to be attached to the inner wall of the outer pipe;

[0024] 2. The inner lining pipe is placed on the guide wheel, one end of the inner lining pipe is inserted into the center sleeve of the pushing seat, then the threaded rod is driven to rotate by the first motor, so that the pushing seat starts to advance, and the inner lining pipe is slowly inserted, the pushing seat plays a limiting role outside at the same time after the feeding is completed, so that the pushing seat bears the extrusion force when the hot pressing head is extruded, and the inner lining pipe is prevented from falling off. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings. Among them:

[0026] Figure 1 The overall structure schematic diagram of the preparation device for the wear-resistant and corrosion-resistant bimetallic composite pipe is provided in the present application.

[0027] Figure 2 The overall structure schematic diagram of the preparation device for the wear-resistant and corrosion-resistant bimetallic composite pipe is provided in the present application.

[0028] Figure 3 The overall structure schematic diagram of the preparation device for the wear-resistant and corrosion-resistant bimetallic composite pipe is provided in the present application.

[0029] Figure 4 The overall structure schematic diagram of the preparation device for the wear-resistant and corrosion-resistant bimetallic composite pipe is provided in the present application.

[0030] Figure 5 The overall structure schematic diagram of the preparation device for the wear-resistant and corrosion-resistant bimetallic composite pipe is provided in the present application.

[0031] Figure 6 The overall structure schematic diagram of the preparation device for the wear-resistant and corrosion-resistant bimetallic composite pipe is provided in the present application.

[0032] In the drawings: 100-main unit, 101-base, 102-supporting rod, 103-lower arc-shaped pressing block, 104-fixing table, 105-telescopic air cylinder, 106-upper arc-shaped pressing block, 107-stand, 108-guiding wheel, 200-feeding unit, 201-rail, 202-mounting base plate, 203-first motor, 204-threaded rod, 205-pushing seat, 206-connecting rod, 207-moving block, 208-roller, 209-threaded plate, 300-propelling unit, 301-mounting platform, 302-U-shaped seat, 303-second motor, 304-extrusion rod core, 305-side plate, 306-fixing rod, 307-guiding roller, 308-upper pinch roller, 309-first gear, 310-second gear, 311-hot pressing head. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail in combination with the drawings of the specification.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0036] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0037] Example 1

[0038] Reference Figures 1-6 , which is an embodiment of the present invention, provides a wear-resistant and corrosion-resistant bimetallic composite pipe preparation device and method, the device includes: a main unit 100, a feeding unit 200 and a propulsion unit 300.

[0039] Among them, the main unit 100 includes: a base 101, a plurality of external pipe positioning mechanisms arranged on the base 101, the external pipe positioning mechanisms include: a plurality of support rods 102 fixedly connected to the base 101 at equal intervals, a lower arc-shaped pressure block 103 fixedly connected to the upper end of the support rod 102, and a fixed platform 104 fixedly connected to the base 101 at equal intervals, a telescopic cylinder 105 is fixedly installed on the fixed platform 104, the output end of the telescopic cylinder 105 is fixedly connected to an upper arc-shaped pressure block 106, and the upper arc-shaped pressure block 106 corresponds to the lower arc-shaped pressure block 103 one-to-one, the upper arc-shaped pressure block 106 and the lower arc-shaped pressure block 103 are in contact with the outer wall of the external pipe, and when the two are close, the external pipe is clamped, and a support 107 is also fixedly connected to the side of the base 101 close to the feeding unit 200, and a guide wheel 108 is rotatably connected to the support 107. The setting of the guide wheel 108 is used for guiding work when feeding the inner liner pipe.

[0040] The feeding unit 200 includes: a mounting base 202, a first motor 203 mounted on the mounting base 202, a guide rail 201 arranged between the base 101 and the mounting base 202, a threaded rod 204 fixedly arranged on the first motor 203, and a threaded plate 209 arranged on the threaded rod 204, a pusher assembly is arranged on the threaded plate 209, and the pusher assembly includes: a pusher seat 205 fixedly arranged on the upper end of the threaded plate 209, a connecting rod 206 symmetrically fixedly connected to both ends of the pusher seat 205, and a fixed connecting rod 206 at the bottom end of the connecting rod 206. There is a moving block 207, which is rotatably connected to a roller 208, and the moving block 207 is slidably connected to the guide rail 201. The roller 208 is in rolling contact with the bottom wall of the guide rail 201. When the pushing seat 205 moves back and forth, the roller 208 rolls back and forth on both sides of the guide rail 201, and the end of the threaded rod 204 away from the mounting substrate 202 is rotatably connected to the base 101. One side of the pushing seat 205 is fixedly connected to a center sleeve, and the inner liner tube is inserted into the center sleeve when pushing, which is convenient for limiting the end of the inner liner tube and facilitating better pushing of the inner liner tube.

[0041] The propulsion unit 300 includes: a mounting platform 301, a U-shaped seat 302 arranged on the mounting platform 301, a pinching assembly arranged on the U-shaped seat 302, a plurality of fixed rods 306 arranged on the mounting platform 301, and side plates 305 arranged on the plurality of fixed rods 306 on both sides, a plurality of guide rollers 307 are rotatably connected to the side plates 305 at equal intervals, an extruded rod core 304 is arranged on the plurality of guide rollers 307, and the extruded rod core 304 is transported by the pinching assembly, the pinching assembly includes a second motor 303 installed on the U-shaped seat 302, an upper pinching roller 308 arranged on the output end of the second motor 303, and a lower pinching roller is also rotatably connected to the U-shaped seat 302, the central rotating shaft of the upper pinching roller 308 and the lower pinching roller passes through one end of the U-shaped seat 302 and is fixedly connected to a first gear 309 and a second gear 310, and the first gear 309 is meshed with the second gear 310. At this time, when the second motor 303 drives the upper pinch roller 308 to rotate, the first gear 309 drives the second gear 310 to rotate synchronously, thereby achieving synchronous pinching of the upper pinch roller 308 and the lower pinch roller.

[0042] A thermocompression head 311 is mounted at one end of the extruded rod core 304. The thermocompression head 311 houses an electric heating element and a wiring conduit for powering the electric heating element. The thermocompression head 311 comprises an integrally formed cylindrical end and a tapered end, with the tapered end facing outward. This means that when the tapered end moves forward, the extruded inner liner joins the outer pipe.

[0043] The preparation method using the preparation device of the wear-resistant and corrosion-resistant bimetal composite pipe is as follows: step one: the outer pipe is placed on the outer pipe positioning mechanism, the upper arc-shaped pressing block 106 is driven by the telescopic air cylinder 105 to be clamped and positioned;

[0044] Step two: the inner liner pipe is placed on the guide wheel 108, one end of the inner liner pipe is inserted into the center sleeve of the pushing seat 205, then the pushing seat 205 starts to move forward by rotating the threaded rod 204 driven by the first motor 203, thereby slowly inserting the inner liner pipe until the other end is aligned with one end of the outer pipe and stops;

[0045] Step three: the hot pressing head 311 is started to heat, the upper pinch roller 308 and the lower pinch roller are rotated by the second motor 303, and the extrusion rod core 304 starts to move forward, the tapered end of the hot pressing head 311 rapidly heats the inner liner pipe, and in this way of extruding and preheating at the same time, the inner liner pipe can continuously and locally deform plastically at a high speed, so as to be attached to the inner wall of the outer pipe;

[0046] Step four: after the inner liner pipe in the outer pipe is deformed, the pinch assembly reverses to drive the hot pressing head 311 to return, at this time, the excess part at both ends of the outer pipe is cut off by the external cutting tool and is polished, so as to complete the composite processing work.

[0047] The inner liner pipe is heated by the hot pressing head 311, and the inner liner pipe is rapidly heated at the same time of extrusion, in this way of extruding and preheating at the same time, the inner liner pipe can continuously and locally deform plastically at a high speed, so as to be attached to the inner wall of the outer pipe, and the inner liner pipe is placed on the guide wheel 108, one end of the inner liner pipe is inserted into the center sleeve of the pushing seat 205, then the pushing seat 205 starts to move forward by rotating the threaded rod 204 driven by the first motor 203, thereby slowly inserting the inner liner pipe, the pushing seat 205 plays a limiting role outside when the feeding is completed, so that the pushing seat 205 bears the extrusion force to avoid the inner liner pipe from falling off when the hot pressing head 311 is extruded.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, not to limit it, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A wear-resistant and corrosion-resistant bimetallic composite pipe preparation device, characterized in that: include: A main unit (100) comprises: a base (101), and a plurality of external pipe positioning mechanisms arranged on the base (101); A feeding unit (200) comprising: a mounting substrate (202), a first motor (203) mounted on the mounting substrate (202), a guide rail (201) disposed between the base (101) and the mounting substrate (202), a threaded rod (204) fixedly disposed on the first motor (203), and a threaded plate (209) disposed on the threaded rod (204), wherein a pusher assembly is disposed on the threaded plate (209), and an end of the threaded rod (204) away from the mounting substrate (202) is rotatably connected to the base (101); A propulsion unit (300) comprising: a mounting platform (301), a U-shaped seat (302) disposed on the mounting platform (301), a pinching assembly disposed on the U-shaped seat (302), a plurality of fixed rods (306) disposed on the mounting platform (301), and side plates (305) disposed on the plurality of fixed rods (306) on both sides, wherein the side plates (305) on both sides are rotatably connected with a plurality of guide rollers (307) at equal intervals, an extrusion rod core (304) is disposed on the plurality of guide rollers (307), and the extrusion rod core (304) is transported by the pinching assembly, and a hot pressing head (311) is disposed at one end of the extrusion rod core (304); The outer pipe positioning mechanism comprises: a plurality of support rods (102) fixedly connected to the base (101) at equal intervals, a lower arc-shaped pressure block (103) fixedly connected to the upper end of the support rods (102), and a fixed platform (104) fixedly connected to the base (101) at equal intervals, a telescopic cylinder (105) fixedly mounted on the fixed platform (104), an upper arc-shaped pressure block (106) fixedly connected to the output end of the telescopic cylinder (105), and the upper arc-shaped pressure block (106) and the lower arc-shaped pressure block (103) are matched one-to-one; the pushing assembly comprises: a pushing seat (205) fixedly arranged at the upper end of the threaded plate (209), and connecting rods (206) symmetrically fixedly connected to both ends of the pushing seat (205), a center sleeve fixedly connected to one side of the pushing seat (205), and the inner liner pipe is inserted into the center sleeve when pushing.

2. The wear-resistant and corrosion-resistant bimetallic composite pipe manufacturing device according to claim 1, characterized in that: An electric heating component is provided in the thermocompression head (311), and a wiring tube for supplying power to the electric heating component is provided in the extruded rod core (304). The thermocompression head (311) comprises an integrally formed cylindrical end and a tapered end, with the tapered end facing outwards.

3. The wear-resistant and corrosion-resistant bimetallic composite pipe manufacturing device according to claim 2, characterized in that: The bottom end of the connecting rod (206) is fixedly connected to a moving block (207), and a roller (208) is rotatably connected to the moving block (207). The moving block (207) is slidably connected in the guide rail (201), and the roller (208) is in rolling contact with the bottom wall of the guide rail (201).

4. The wear-resistant and corrosion-resistant bimetallic composite pipe manufacturing device according to claim 3, characterized in that: The pinching assembly comprises a second motor (303) mounted on a U-shaped seat (302), an upper pinching roller (308) arranged on an output end of the second motor (303), and a lower pinching roller rotatably connected to the U-shaped seat (302), wherein the central rotating shafts of the upper pinching roller (308) and the lower pinching roller pass through one end of the U-shaped seat (302) and are fixedly connected to a first gear (309) and a second gear (310), and the first gear (309) and the second gear (310) are meshedly connected.

5. The wear-resistant and corrosion-resistant bimetallic composite pipe manufacturing device according to claim 4, characterized in that: A support (107) is fixedly connected to one side of the base (101) close to the feeding unit (200), and a guide wheel (108) is rotatably connected to the support (107).

6. The method for preparing a wear-resistant and corrosion-resistant bimetallic composite pipe according to claim 5, characterized in that: The method comprises the following steps: Step 1: placing the outer pipe on the outer pipe positioning mechanism, and driving the upper arc-shaped pressing block (106) by the telescopic cylinder (105) to position and clamp; Step 2: Place the inner liner tube on the guide wheel (108) so that one end thereof is inserted into the center sleeve of the push seat (205), and then the threaded rod (204) is driven to rotate by the first motor (203), so that the push seat (205) starts to move forward, thereby driving the inner liner tube to be slowly inserted until the other end is aligned with one end of the outer pipe and stops; Step 3: Start the hot pressing head (311) to heat, and drive the upper pinch roller (308) and the lower pinch roller to rotate through the second motor (303), and drive the extrusion rod core (304) to start moving forward. The tapered end of the hot pressing head (311) quickly heats the inner liner at a fixed point. In this method of extrusion and preheating, the inner liner is continuously and locally deformed rapidly, so that it fits the inner wall of the outer pipe; Step 4: After the inner lining pipe inside the outer pipe is deformed, the clamping assembly works in reverse to drive the hot pressing head (311) back to its original position. At this time, the excess parts at both ends of the outer pipe are cut off with the help of an external cutting tool and the end faces are polished, thereby completing the composite processing work.

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