Pipe roundness correcting device and method

Abstract

The invention discloses a pipe roundness correcting device which comprises an inner wall correcting module and an outer wall correcting module, the inner wall correcting module comprises an inner correcting structure and an adjusting module, the inner correcting structure comprises an upper annular top plate and a lower annular top plate, and the adjusting module comprises an upper threaded column, a lower threaded column and a double-thread screw. An upper threaded column is arranged in the middle of the inner side of the upper annular top plate, a lower threaded column is arranged in the middle of the inner side of the lower annular top plate, and the two ends of the double-thread screw are in threaded connection with the upper threaded column and the lower threaded column correspondingly and are connected with the two ends of the lower annular top plate through connecting plates correspondingly. The outer correction module comprises an upper annular pressing plate and a lower annular pressing plate, and the two ends of the upper annular pressing plate are connected with the two ends of the lower annular pressing plate through bolts. The pipe is corrected through the inner wall correction module and the outer wall correction module, the problem of excessive correction of a single outer part or an inner part is avoided, and the pipe correction quality is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of shipbuilding, and in particular relates to a pipe roundness correction device and method. Background Art

[0002] When using pipes, they need to be assembled and connected with other equipment or components such as pipe joints. In most cases, there are certain requirements for the dimensional accuracy of pipes, especially the cross-sectional roundness. In some assembly cases, the cross-sectional roundness requirements are very high. Metal pipes are generally processed and formed by drawing, rolling and other methods. On the one hand, the dimensional accuracy including cross-sectional roundness that can be achieved in conventional processing is limited and may not meet the use requirements. On the other hand, deformation may occur during the heat treatment process or transportation and storage process of the pipe, which makes the roundness accuracy of the product exceed the required accuracy range and cannot meet the use requirements.

[0003] Prior art CN205914566U is a new type of universal cold straightening device, including a frame, two slide grooves are welded at the lower end of the baffle of the frame, and sliders are slidably connected inside the two slide grooves. A top bending device is provided between the sliders, and a transition pressure plate is provided at the lower end of the top bending device. A threaded rod is welded at the upper end of the transition pressure plate, and the lower ends of the supporting legs on both sides of the frame are connected to U-shaped plates through pins. The correction device has a complex structure and a limited scope of use. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art and to provide a device and method for correcting the roundness of a pipe. The present invention corrects the pipe through an inner wall correction module and an outer wall correction module, thereby avoiding the problem of excessive correction of a single external or internal part and improving the quality of pipe correction.

[0005] In order to achieve the above invention purpose, the technical solution provided by the present invention is as follows:

[0006] A pipe roundness correction device, the device comprises an inner wall correction module and an outer wall correction module, the inner wall correction module is installed at the inner wall of the pipe to be corrected, and the outer wall correction module is installed at the outer wall of the pipe to be corrected; the inner wall correction module comprises an inner correction structure and an adjustment module, the inner correction structure comprises an upper annular top plate and a lower annular top plate, the adjustment module comprises an upper threaded column, a lower threaded column and a double-headed screw, an upper threaded column is arranged in the middle of the inner side of the upper annular top plate, a lower threaded column is arranged in the middle of the inner side of the lower annular top plate, both ends of the double-headed screw are threadedly connected with the upper threaded column and the lower threaded column respectively, and the two ends of the upper annular top plate are respectively connected with the two ends of the lower annular top plate through connecting plates; the outer correction module comprises an upper annular pressure plate and a lower annular pressure plate, and the two ends of the upper annular pressure plate are connected with the two ends of the lower annular pressure plate through bolts.

[0007] Furthermore, one end of the upper threaded column is vertically connected to the middle inner side of the upper annular top plate, and the other end of the upper threaded column is provided with an internal thread. One end of the lower threaded column is vertically connected to the middle inner side of the lower annular top plate, and the other end of the lower threaded column is provided with an internal thread. The upper threaded column and the lower threaded column are symmetrically arranged.

[0008] Furthermore, both ends of the double-headed screw are respectively provided with external threads, the directions of the external threads at the two ends of the double-headed screw are opposite, and the two ends of the double-headed screw are respectively connected to the upper threaded column and the lower threaded column through threads.

[0009] Furthermore, the connecting plate is overall in the shape of an elongated strip, a waisted circular hole is provided in the middle of the end face of the connecting plate, studs are provided on the front and rear sides of both ends of the upper annular top plate, and studs are provided on the front and rear sides of both ends of the lower annular top plate, and the two ends of the waisted circular hole of the connecting plate are respectively connected to the studs of the upper annular top plate and the studs of the lower annular top plate.

[0010] Furthermore, the upper annular pressing plate is semicircular as a whole, the structure of the lower annular pressing plate is the same as that of the upper annular pressing plate, and the upper annular pressing plate and the lower annular pressing plate are symmetrically arranged.

[0011] A method for correcting the roundness of a pipe, the method specifically comprising the following steps:

[0012] S1. Prepare a pipe roundness correction device, which includes an inner wall correction module and an outer wall correction module. The inner wall correction module is installed at the inner wall of the pipe to be corrected, and the outer wall correction module is installed at the outer wall of the pipe to be corrected; the inner wall correction module includes an inner correction structure and an adjustment module, the inner correction structure includes an upper annular top plate and a lower annular top plate, the adjustment module includes an upper threaded column, a lower threaded column and a double-headed screw, an upper threaded column is provided in the middle of the inner side of the upper annular top plate, a lower threaded column is provided in the middle of the inner side of the lower annular top plate, and the two ends of the double-headed screw are respectively threadedly connected with the upper threaded column and the lower threaded column, and the two ends of the upper annular top plate are respectively connected with the two ends of the lower annular top plate through connecting plates; the outer correction module includes an upper annular pressure plate and a lower annular pressure plate, and the two ends of the upper annular pressure plate are connected with the two ends of the lower annular pressure plate through bolts;

[0013] S2, according to the position of the pipe to be corrected, the upper annular top plate and the lower annular top plate are connected by double-headed screws, the ends of the upper annular top plate and the lower annular top plate are connected by connecting plates, and the inner correction module is placed on the inner wall of the pipe to be corrected;

[0014] S3, by screwing the double-headed screw, the upper annular top plate and the lower annular top plate are moved to be in close contact with the inner wall of the pipe, so as to correct the roundness of the pipe internally;

[0015] S4, according to the position of the pipe to be corrected, the two ends of the upper annular pressing plate and the lower annular pressing plate are connected by bolts, and the upper annular pressing plate and the lower annular pressing plate are sleeved on the outer wall of the pipe to be corrected, and the bolts at both ends of the upper annular pressing plate and the lower annular pressing plate are screwed to make the upper annular pressing plate and the lower annular pressing plate tightly connected to the outer wall of the pipe, so as to correct the roundness of the pipe externally;

[0016] S5, after the pipe correction is completed, the inner wall correction module and the outer wall correction module are respectively removed from the pipe correction position to complete the pipe correction.

[0017] Furthermore, when the upper annular top plate and the lower annular top plate are in use, the plane formed by the upper annular top plate and the lower annular top plate is perpendicular to the axis of the pipe.

[0018] Based on the above technical solution, the pipe roundness correction device and method of the present invention have achieved the following technical advantages through practical application:

[0019] 1. The pipe roundness correction device of the present invention corrects the pipe through the inner wall correction module and the outer wall correction module, thereby avoiding the problem of excessive correction of a single external or internal part and improving the quality of pipe correction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view of an inner wall correction module in a tube roundness correction device of the present invention.

[0021] Figure 2 It is a side view of an inner wall correction module in a tube roundness correction device of the present invention.

[0022] Figure 3 It is a front view of an outer wall correction module in a tube roundness correction device of the present invention. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific examples shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0024] like Figure 1-3As shown, the present invention belongs to a pipe roundness correction device, which includes an inner wall correction module and an outer wall correction module. The inner wall correction module is installed at the inner wall of the pipe to be corrected, and the outer wall correction module is installed at the outer wall of the pipe to be corrected; the inner wall correction module includes an inner correction structure and an adjustment module, the inner correction structure includes an upper annular top plate 1 and a lower annular top plate 6, the adjustment module includes an upper threaded column 2, a lower threaded column 5 and a double-headed screw 4, an upper threaded column 2 is arranged in the middle of the inner side of the upper annular top plate 1, and a lower threaded column 5 is arranged in the middle of the inner side of the lower annular top plate 6, and the two ends of the double-headed screw 4 are threadedly connected with the upper threaded column 2 and the lower threaded column 5 respectively, and the two ends of the upper annular top plate 1 are respectively connected with the two ends of the lower annular top plate 6 through a connecting plate 3; the outer correction module includes an upper annular pressure plate 8 and a lower annular pressure plate 9, and the two ends of the upper annular pressure plate 8 are connected with the two ends of the lower annular pressure plate 9 through bolts.

[0025] The pipe is corrected by the inner wall correction module and the outer wall correction module, avoiding the problem of excessive correction of the single outer or inner part and improving the quality of pipe correction.

[0026] One end of the upper threaded column 2 is vertically connected to the middle inner side of the upper annular top plate 1, and the other end of the upper threaded column 2 is provided with an internal thread. One end of the lower threaded column 5 is vertically connected to the middle inner side of the lower annular top plate 6, and the other end of the lower threaded column 5 is provided with an internal thread. The upper threaded column 2 and the lower threaded column 5 are symmetrically arranged.

[0027] The thickness of the upper annular top plate 1 and the lower annular top plate 6 is 1.3 times the wall thickness of the pipe to be corrected, the outer diameter of the upper annular top plate 1 and the lower annular top plate 6 is 0.25 to 0.30 mm smaller than the inner diameter of the pipe to be corrected, and the width of the upper annular top plate 1 and the lower annular top plate 6 is 40% of the diameter of the pipe to be corrected, thereby avoiding local deformation of the inner wall in a small range during pipe correction.

[0028] The two ends of the double-headed screw 4 are respectively provided with external threads, and the external threads at the two ends of the double-headed screw 4 are in opposite directions. The two ends of the double-headed screw 4 are respectively connected to the upper threaded column 2 and the lower threaded column 5 by threads; when the double-headed screw 4 is in use, the two ends of the double-headed screw 4 are first screwed to the bottom ends of the upper threaded column 2 and the lower threaded column 5, so that the two ends of the upper annular top plate 1 and the lower annular top plate 6 are close to form the smallest circle to facilitate the inner wall correction module to be placed in the pipe. When correcting, the double-headed screw 4 is screwed again to make the upper annular top plate 1 and the lower annular top plate 6 respectively press against the inner wall of the pipe for correction.

[0029] The connecting plate 3 is an elongated strip as a whole, and a waisted circular hole is provided in the middle of the end face of the connecting plate 3. Studs are provided on the front and rear sides of both ends of the upper annular top plate 1, and studs are provided on the front and rear sides of both ends of the lower annular top plate 6. The two ends of the waisted circular hole of the connecting plate 3 are respectively connected to the studs of the upper annular top plate 1 and the studs of the lower annular top plate 6.

[0030] The upper annular pressing plate 8 is semicircular as a whole, and the structure of the lower annular pressing plate 9 is the same as that of the upper annular pressing plate 8. The upper annular pressing plate 8 and the lower annular pressing plate 9 are symmetrically arranged; the inner diameters of the upper annular pressing plate 8 and the lower annular pressing plate 9 are 0.25 to 0.30 mm larger than the outer diameter of the pipe to be corrected.

[0031] A method for correcting the roundness of a pipe, the method specifically comprising the following steps:

[0032] S1, prepare a pipe roundness correction device, the device includes an inner wall correction module and an outer wall correction module, the inner wall correction module is installed at the inner wall of the pipe to be corrected, and the outer wall correction module is installed at the outer wall of the pipe to be corrected; the inner wall correction module includes an inner correction structure and an adjustment module, the inner correction structure includes an upper annular top plate 1 and a lower annular top plate 6, the adjustment module includes an upper threaded column 2, a lower threaded column 5 and a double-headed screw 4, an upper threaded column 2 is provided in the middle of the inner side of the upper annular top plate 1, a lower threaded column 5 is provided in the middle of the inner side of the lower annular top plate 6, the two ends of the double-headed screw 4 are respectively threadedly connected with the upper threaded column 2 and the lower threaded column 5, the two ends of the upper annular top plate 1 are respectively connected with the two ends of the lower annular top plate 6 through a connecting plate 3; the outer correction module includes an upper annular pressure plate 8 and a lower annular pressure plate 9, and the two ends of the upper annular pressure plate 8 are connected with the two ends of the lower annular pressure plate 9 through bolts;

[0033] S2, according to the position of the pipe to be corrected, the upper annular top plate 1 and the lower annular top plate 6 are connected by the double-headed screw 4, the ends of the upper annular top plate 1 and the lower annular top plate 6 are connected by the connecting plate 3, and the inner correction module is placed on the inner wall of the pipe to be corrected;

[0034] S3, by screwing the double-headed screw 4, the upper annular top plate 1 and the lower annular top plate 6 are moved to be in close contact with the inner wall of the pipe, so as to correct the roundness of the pipe internally;

[0035] S4, according to the position of the pipe to be corrected, the two ends of the upper annular pressing plate 8 and the lower annular pressing plate 9 are connected by bolts, and the upper annular pressing plate 8 and the lower annular pressing plate 9 are sleeved on the outer wall of the pipe to be corrected, and the bolts at both ends of the upper annular pressing plate 8 and the lower annular pressing plate 9 are screwed to make the upper annular pressing plate 8 and the lower annular pressing plate 9 tightly connected to the outer wall of the pipe, and the roundness of the pipe is corrected externally;

[0036] S5, after the pipe correction is completed, the inner wall correction module and the outer wall correction module are respectively removed from the pipe correction position to complete the pipe correction.

[0037] When the upper annular top plate 1 and the lower annular top plate 6 are in use, the plane formed by the upper annular top plate 1 and the lower annular top plate 6 is perpendicular to the axis of the pipe.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A pipe roundness correction device, characterized in that: The device includes an inner wall correction module and an outer wall correction module, the inner wall correction module is installed at the inner wall of the pipe to be corrected, and the outer wall correction module is installed at the outer wall of the pipe to be corrected; the inner wall correction module includes an inner correction structure and an adjustment module, the inner correction structure includes an upper annular top plate and a lower annular top plate, the adjustment module includes an upper threaded column, a lower threaded column and a double-headed screw, an upper threaded column is arranged in the middle of the inner side of the upper annular top plate, a lower threaded column is arranged in the middle of the inner side of the lower annular top plate, the two ends of the double-headed screw are respectively threadedly connected with the upper threaded column and the lower threaded column, the two ends of the upper annular top plate are respectively connected with the two ends of the lower annular top plate through connecting plates; the outer correction module includes an upper annular pressure plate and a lower annular pressure plate, the two ends of the upper annular pressure plate are connected with the two ends of the lower annular pressure plate through bolts.

2. A pipe roundness correction device according to claim 1, characterized in that: One end of the upper threaded column is vertically connected to the middle inner side of the upper annular top plate, and the other end of the upper threaded column is provided with an internal thread. One end of the lower threaded column is vertically connected to the middle inner side of the lower annular top plate, and the other end of the lower threaded column is provided with an internal thread. The upper threaded column and the lower threaded column are symmetrically arranged.

3. A pipe roundness correction device according to claim 2, characterized in that: External threads are respectively arranged at both ends of the double-headed screw, and the external threads at the two ends of the double-headed screw are in opposite directions. The two ends of the double-headed screw are respectively connected to the upper threaded column and the lower threaded column through threads.

4. A pipe roundness correction device according to claim 1, characterized in that: The connecting plate is in the shape of an elongated strip as a whole, and a waisted circular hole is provided in the middle of the end face of the connecting plate. Studs are provided on the front and rear sides of both ends of the upper annular top plate, and studs are provided on the front and rear sides of both ends of the lower annular top plate. The two ends of the waisted circular hole of the connecting plate are respectively connected to the studs of the upper annular top plate and the studs of the lower annular top plate.

5. The tube roundness correction device according to claim 1, characterized in that: The upper annular pressing plate is semicircular in shape as a whole, the structure of the lower annular pressing plate is the same as that of the upper annular pressing plate, and the upper annular pressing plate and the lower annular pressing plate are symmetrically arranged.

6. A method for correcting the roundness of a pipe, characterized in that: The method specifically comprises the following steps: S1. Prepare a pipe roundness correction device, which includes an inner wall correction module and an outer wall correction module. The inner wall correction module is installed at the inner wall of the pipe to be corrected, and the outer wall correction module is installed at the outer wall of the pipe to be corrected; the inner wall correction module includes an inner correction structure and an adjustment module, the inner correction structure includes an upper annular top plate and a lower annular top plate, the adjustment module includes an upper threaded column, a lower threaded column and a double-headed screw, an upper threaded column is provided in the middle of the inner side of the upper annular top plate, a lower threaded column is provided in the middle of the inner side of the lower annular top plate, and the two ends of the double-headed screw are respectively threadedly connected with the upper threaded column and the lower threaded column, and the two ends of the upper annular top plate are respectively connected with the two ends of the lower annular top plate through connecting plates; the outer correction module includes an upper annular pressure plate and a lower annular pressure plate, and the two ends of the upper annular pressure plate are connected with the two ends of the lower annular pressure plate through bolts; S2, according to the position of the pipe to be corrected, the upper annular top plate and the lower annular top plate are connected by double-headed screws, the ends of the upper annular top plate and the lower annular top plate are connected by connecting plates, and the inner correction module is placed on the inner wall of the pipe to be corrected; S3, by screwing the double-headed screw, the upper annular top plate and the lower annular top plate are moved to be in close contact with the inner wall of the pipe, so as to correct the roundness of the pipe internally; S4, according to the position of the pipe to be corrected, the two ends of the upper annular pressing plate and the lower annular pressing plate are connected by bolts, and the upper annular pressing plate and the lower annular pressing plate are sleeved on the outer wall of the pipe to be corrected, and the bolts at both ends of the upper annular pressing plate and the lower annular pressing plate are screwed to make the upper annular pressing plate and the lower annular pressing plate tightly connected to the outer wall of the pipe, so as to correct the roundness of the pipe externally; S5, after the pipe correction is completed, the inner wall correction module and the outer wall correction module are respectively removed from the pipe correction position to complete the pipe correction.

7. A method for correcting the roundness of a pipe according to claim 6, characterized in that: When the upper annular top plate and the lower annular top plate are in use, the plane formed by the upper annular top plate and the lower annular top plate is perpendicular to the axis of the pipe.

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