Pipe thread comprehensive detector

Abstract

The utility model relates to the technical field of pipe thread detection, in particular to a pipe thread comprehensive detector, which comprises a detection seat, two support rotating rollers are symmetrically and rotatably mounted at the top of the detection seat, and a pipe body is jointly supported above the two support rotating rollers; the two fixing plates are fixedly installed at the top of the detection base, a lead screw and a rotating cylinder are jointly and rotationally installed between the two fixing plates, and the lead screw and the rotating cylinder are arranged below and above the pipe body respectively. According to the utility model, the expandable air bag contacts and abuts against the surface of the pipe in a large area, so that pipes with different sizes can be effectively fixed, the application range of the device is expanded, and meanwhile, the effect of comprehensively detecting the threads of the pipe can be achieved by only one speed reducing motor, so that the use cost of the device is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe thread detection, in particular to a comprehensive pipe thread detection instrument. Background Art

[0002] The pipe is cut into the required size from a long pipe, and then the end of the pipe is threaded and screwed with accessories to assemble it into the required specifications and shapes. When the pipe is used, it is particularly important whether the threads on its surface meet the specifications.

[0003] After searching, the Chinese patent announcement number CN217931521U discloses an automatic detection device for oil pipe threads, which has the characteristics of strong adjustment ability and good stability, is convenient for comprehensive scanning and detection, has high accuracy, and can avoid detection omissions.

[0004] However, the above patent has the following disadvantages when used:

[0005] 1. When fixing the pipe to be tested, two electric push rods are needed to push two balls against the pipe surface, and the end of the pipe is supported by a rotating ring. However, due to the lack of the function of fixing the end of the pipe in the rotating ring, the rotating ring is only suitable for placing pipes with an outer diameter equal to its inner diameter, so that the pipe can be effectively fixed. When testing pipes of different sizes that are smaller or larger than the inner diameter of the rotating ring, only relying on the radial tightness of the two balls on the surface cannot keep the pipe stable during the testing process, resulting in low applicability;

[0006] 2. In order to enable the detection probe to comprehensively scan the pipe threads, an independent motor base and two independent linear motors are required to enable the detection probe to move in a circular motion and move simultaneously. It is impossible to rely on only one drive component to link the two, resulting in a high cost of use during production and low practicality. Utility Model Content

[0007] The utility model aims to solve the problems in the background technology and provides a comprehensive pipe thread detector.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] Pipe thread comprehensive testing instrument, including:

[0010] A detection seat, wherein two supporting rotating rollers are symmetrically mounted on the top of the detection seat, and the top of the two supporting rotating rollers jointly supports the pipe body;

[0011] Two fixed plates are fixedly mounted on the top of the detection seat, and a screw rod and a rotating cylinder are rotatably mounted between the two fixed plates, and the screw rod and the rotating cylinder are respectively placed below and above the pipe body;

[0012] A rotary mobile detection component comprises an airbag fixedly sleeved on the outer surface of a rotating cylinder, and the interior of the airbag is connected to the interior of the rotating cylinder, a two-way pump is fixedly installed on the outer side of one of the fixed plates, and the driving end of the two-way pump movably penetrates into the rotating cylinder, and a reduction motor for driving the rotating cylinder is fixedly installed on the outer side of the other fixed plate, a rectangular block is threadedly connected to the outer wall of the screw rod, and the rectangular block is slidably fitted on the top of the detection seat, and a detection probe is fixedly installed on the top of the rectangular block, and the outer sides of the rotating cylinder and the screw rod are respectively fixedly sleeved with a first sprocket and a second sprocket, and a transmission chain is commonly sleeved between the first sprocket and the second sprocket;

[0013] The control display is fixedly mounted on the top of the detection seat and is electrically connected to the bidirectional pump, the detection probe and the reduction motor. The control display has a built-in processor.

[0014] Preferably, a plurality of legs are fixedly mounted on the bottom of the detection seat.

[0015] Preferably, a plurality of air holes are provided at the connection between the rotating cylinder and the airbag.

[0016] Preferably, a rubber sealing ring is fixedly mounted on the outer wall of the driving end of the bidirectional pump, and the rubber sealing ring is fixedly mounted on the end of the inner side of the rotating cylinder.

[0017] Preferably, the diameter of the first sprocket is smaller than the diameter of the second sprocket.

[0018] Preferably, a groove is provided on the top of the detection seat, and the groove is slidably connected to the second sprocket.

[0019] Compared with the existing technology, the advantages of the pipe thread comprehensive detector provided by the utility model are:

[0020] 1. Use a two-way pump to blow air into the rotating drum, so that the airbag expands and contacts the pipe body with a large area and presses it against the surfaces of the two supporting rotating rollers, so that the pipe can be positioned on the surfaces of the two supporting rotating rollers, thereby effectively fixing pipes of different sizes and expanding the use range of the device;

[0021] 2. The rotation of the rotating cylinder is controlled by the reduction motor, so the friction between the airbag and the pipe body drives the pipe body to rotate. At the same time, the first sprocket, the second sprocket and the transmission chain can drive the lead screw to rotate synchronously, so that the rectangular block drives the detection probe to move slowly horizontally along the top of the detection seat, so as to carry out a comprehensive detection of the threads on the surface of the pipe body. Therefore, only one reduction motor is needed to achieve the effect of comprehensive detection of the pipe threads, reducing the use cost of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a first-view structural diagram of the pipe thread comprehensive detector proposed by the utility model;

[0023] Figure 2 This is a partial structural schematic diagram of the pipe thread comprehensive detector proposed by the utility model;

[0024] Figure 3 It is a schematic cross-sectional view of the connection between the rotating cylinder and the airbag in the pipe thread comprehensive detector proposed by the utility model;

[0025] Figure 4 The utility model provides a schematic cross-sectional view of the connection between the bidirectional pump and the rotating cylinder in the comprehensive pipe thread detector.

[0026] In the figure: 1 detection seat, 2 support rotating roller, 3 pipe body, 4 fixed plate, 5 screw rod, 6 rotating cylinder, 7 air bag, 8 two-way pump, 9 rectangular block, 10 detection probe, 11 first sprocket, 12 second sprocket, 13 chain, 14 reduction motor, 15 support leg, 16 air hole, 17 rubber sealing ring, 18 control display. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Reference Figures 1 to 4 , pipe thread comprehensive detector, including:

[0029] The detection seat 1 has a plurality of legs 15 fixedly mounted on the bottom thereof, and two supporting rotating rollers 2 are symmetrically mounted on the top thereof for rotation, and a pipe body 3 is jointly supported above the two supporting rotating rollers 2 for supporting the pipe body 3 and facilitating the self-rotation of the pipe body 3.

[0030] Two fixed plates 4 are fixedly mounted on the top of the detection seat 1 , and a screw rod 5 and a rotating cylinder 6 are rotatably mounted between the two fixed plates 4 , and the screw rod 5 and the rotating cylinder 6 are respectively placed below and above the pipe body 3 .

[0031] The rotary movement detection component includes an airbag 7 fixedly mounted on the outer surface of the rotating cylinder 6, and the interior of the airbag 7 is interconnected with the interior of the rotating cylinder 6. A plurality of air holes 16 are provided at the connection between the rotating cylinder 6 and the airbag 7, so that the airflow between the rotating cylinder 6 and the airbag 7 can circulate with each other.

[0032] A two-way pump 8 is fixedly installed on the outer side of one of the fixed plates 4, and the driving end of the two-way pump 8 is movable and penetrates into the rotating cylinder 6. A rubber sealing ring 17 is fixedly sleeved on the outer wall of the driving end of the two-way pump 8, and the rubber sealing ring 17 is fixedly installed at the end of the inner side of the rotating cylinder 6, thereby improving the sealing performance between the outer wall of the driving end of the two-way pump 8 and the inner side of the rotating cylinder 6. The connection prevents the gas inside the rotating cylinder 6 from leaking out. When the two-way pump 8 is started to blow air into the rotating cylinder 6, the airbag 7 begins to expand. When the airbag 7 is in close contact with the pipe body 3, it can be pressed against the surfaces of the two supporting rotating rollers 2, and when the airbag 7 rotates, it can drive the pipe body 3 to rotate on the surfaces of the two supporting rotating rollers 2 under the friction between them.

[0033] A reduction motor 14 for driving the rotating cylinder 6 is fixedly installed on the outer side of the other fixed plate 4. The outer wall of the screw rod 5 is threadedly connected to a rectangular block 9, and the rectangular block 9 is slidably fitted on the top of the detection seat 1. A detection probe 10 is fixedly installed on the top of the rectangular block 9. The detection probe 10 is an existing public technology, which is electrically connected to the NT-90cRL magnetic leakage flaw detection system. The information detected by the detection probe 10 is transmitted to the NT-90cRL magnetic leakage flaw detection system. The defects of the oil pipe threads can be analyzed through the NT-90cRL magnetic leakage flaw detection system. Its working principle is based on magnetic leakage technology. By applying a magnetic field to the object to be tested, when there are uneven threads or other thread defects, the magnetic field will leak, thereby generating a signal in the detection probe 10. This part is an existing public technology, and it is only a further expanded description of the NT-90cRL magnetic leakage flaw detection system mentioned in the public document CN217931521U.

[0034] The outer sides of the rotating cylinder 6 and the screw rod 5 are respectively fixedly sleeved with a first sprocket 11 and a second sprocket 12. A groove is opened on the top of the detection seat 1, and the groove is slidably connected to the second sprocket 12. A transmission chain 13 is commonly sleeved between the first sprocket 11 and the second sprocket 12. When the reduction motor 14 controls the rotation of the rotating cylinder 6, the screw rod 5 can be driven to rotate synchronously under the transmission of the first sprocket 11, the second sprocket 12 and the transmission chain 13, so that the rectangular block 9 drives the detection probe 10 to move horizontally along the top of the detection seat 1, and then the thread data on the surface of the pipe body 3 is collected, thereby improving the collection effect of the pipe thread.

[0035] The control display 18 is fixedly mounted on the top of the detection base 1 and is electrically connected to the bidirectional pump 8, the detection probe 10 and the reduction motor 14. The control display 18 has a built-in processor. When the detection probe 10 collects thread data on the surface of the pipe body 3, the collected data can be transmitted to the processor in the control display 18, and then processed and analyzed by the processor. Finally, the processed and analyzed pipe thread data is displayed on the control display 18. The staff can grasp the measured pipe thread data by observing the information displayed.

[0036] Furthermore, the diameter of the first sprocket 11 is smaller than the diameter of the second sprocket 12, so that the rotation speed of the screw rod 5 is lower than the rotation speed of the rotating cylinder 6, so that the detection probe 10 can move slowly under the pipe body 3, ensuring that sufficient information about the surface thread of the pipe body 3 is collected to prevent missing.

[0037] The working principle of the utility model is:

[0038] When in use, the pipe body 3 to be inspected is first placed on the two supporting rotating rollers 2, and then the two-way pump 8 is started to blow air into the rotating cylinder 6, so that the airbag 7 expands and contacts the pipe body 3 and presses it against the surfaces of the two supporting rotating rollers 2;

[0039] Then, the reduction motor 14 is started to control the rotation of the rotating cylinder 6, so that the friction between the airbag 7 and the pipe body 3 drives the pipe body 3 to rotate. At the same time, under the transmission of the first sprocket 11, the second sprocket 12 and the transmission chain 13, the lead screw 5 can be driven to rotate synchronously, so that the rectangular block 9 drives the detection probe 10 to move horizontally slowly along the top of the detection seat 1, so that the thread data on the surface of the pipe body 3 can be comprehensively collected;

[0040] Next, the detection probe 10 collects the thread data collected from the surface of the pipe body 3 and transmits it to the processor in the control display 18. After being processed and analyzed by the processor, the obtained pipe thread data is displayed on the control display 18. The staff can grasp the measured pipe thread data by observing the displayed information.

[0041] Finally, the two-way pump 8 is controlled to extract the gas inside the airbag 7, so that the airbag 7 shrinks and no longer squeezes the pipe body 3, and the pipe body 3 that has been tested can be removed.

[0042] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Pipe thread comprehensive testing instrument, It is characterized in that include: An inspection seat (1), wherein two supporting rotating rollers (2) are symmetrically mounted on the top of the inspection seat (1), and a pipe body (3) is jointly supported above the two supporting rotating rollers (2); Two fixed plates (4) are fixedly mounted on the top of the detection seat (1), and a screw rod (5) and a rotating cylinder (6) are rotatably mounted between the two fixed plates (4), and the screw rod (5) and the rotating cylinder (6) are respectively placed below and above the pipe body (3); A rotary mobile detection component comprises an airbag (7) fixedly sleeved on the outer surface of a rotating cylinder (6), and the interior of the airbag (7) is communicated with the interior of the rotating cylinder (6), a bidirectional pump (8) is fixedly mounted on the outer side of one of the fixed plates (4), and the driving end of the bidirectional pump (8) movably penetrates into the rotating cylinder (6), and a reduction motor (14) for driving the rotating cylinder (6) is fixedly mounted on the outer side of the other fixed plate (4), a rectangular block (9) is threadedly connected to the outer wall of the screw rod (5), and the rectangular block (9) is slidably fitted on the top of the detection seat (1), and a detection probe (10) is fixedly mounted on the top of the rectangular block (9), and the outer sides of the rotating cylinder (6) and the screw rod (5) are respectively fixedly sleeved with a first sprocket (11) and a second sprocket (12), and a transmission chain (13) is commonly sleeved between the first sprocket (11) and the second sprocket (12); A control display (18) is fixedly mounted on the top of the detection seat (1) and is electrically connected to the bidirectional pump (8), the detection probe (10) and the reduction motor (14); the control display (18) has a built-in processor.

2. The pipe thread comprehensive detector according to claim 1, It is characterized in that A plurality of legs (15) are fixedly mounted on the bottom of the detection seat (1).

3. The pipe thread comprehensive detector according to claim 1, It is characterized in that A plurality of air holes (16) are provided at the connection between the rotating cylinder (6) and the air bag (7).

4. The pipe thread comprehensive detector according to claim 1, It is characterized in that A rubber sealing ring (17) is fixedly sleeved on the outer wall of the driving end of the bidirectional pump (8), and the rubber sealing ring (17) is fixedly mounted on the end portion of the inner side of the rotating cylinder (6).

5. The pipe thread comprehensive detector according to claim 1, It is characterized in that The diameter of the first sprocket (11) is smaller than the diameter of the second sprocket (12).

6. The pipe thread comprehensive detector according to claim 1, It is characterized in that The top of the detection seat (1) is provided with a groove, and the groove is slidably connected to the second sprocket (12).

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