Array eddy current scanning device for small connecting pipe body wall thickness reduction detection

Abstract

The utility model discloses an array eddy current scanning device for small connecting pipe body wall thickness reduction detection, and relates to the technical field of eddy current array detection. The device comprises an eddy current array detection host, a modularized display and a wall thickness scanning head, the front end of the eddy current array detection host is provided with an interface used for connecting the wall thickness scanning head or a welding seam scanning head, and the eddy current array detection host is in circuit connection with the wall thickness scanning head through matching of the interface and a wire. One side of the eddy current array detection host is in circuit connection with the modular display through a wire, and the positioning box, the joint and the elastic binding belt are matched with one another, so that the detection end of the wall thickness scanning head can be in contact with the pipe wall of the small connecting pipe body under the condition that a detector does not need to hold the small connecting pipe with hands, and thus thickness detection is carried out; and in the detection process, recording can be carried out according to the data displayed by the modularized display without hand holding, so that the working efficiency of detection personnel is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of eddy current array detection, in particular to an array eddy current scanning device for detecting thinning of the wall thickness of a small pipe body. Background Art

[0002] Small pipe connections are a common structural form on pressure vessels and pressure piping in refineries. The "Guidelines for the Management of Small Pipe Connections in Refining and Chemical Plants" (Second Edition) stipulates that structures with DN50mm or less, such as half-pipe joints, branch sockets, and branch pipes, that are directly opened on the equipment body or pipeline and connected by welding, are collectively referred to as small pipe connections. Pipe connections such as safety accessories, instruments (thermocouples, pressure gauges, liquid level gauges, and flow meters), drain drains, steam sweep lines, exhaust valves, and crossover lines connected to the vessel body or pipeline, and generally within the first valve, are collectively referred to as small pipe connections.

[0003] In order to ensure the normal operation of the equipment, it is necessary to regularly use array eddy current scanning equipment to detect the wall thickness of the small pipe body to avoid accidents caused by thinning of the wall thickness or cracks. However, during the detection process, the inspector needs to hold the scanning head while watching the modular display, and there is a situation where it is impossible to record at the same time. In view of this, the present utility model is specially proposed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an array eddy current scanning device for detecting thinning of the wall thickness of a small pipe body.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] An array eddy current scanning device for detecting wall thickness reduction of small pipe bodies includes an eddy current array detection host, a modular display, and a wall thickness scanning head. The device is characterized in that the front end of the eddy current array detection host is provided with an interface for connecting to the wall thickness scanning head or the weld scanning head. The eddy current array detection host is connected to the wall thickness scanning head circuit via a wire through the interface, and one side of the eddy current array detection host is connected to the modular display circuit via a wire.

[0007] The middle part of the lower end of the wall thickness scanning head is provided with a detection end for fitting the small pipe body to detect the wall thickness. Positioning boxes are provided on the front and rear sides of the lower end of the wall thickness scanning head. Both ends of the positioning boxes are provided with holes for installing elastic binding bands. The ends of the two elastic binding bands are fixed with joints. The opposite surfaces of the two joints are respectively provided with T-shaped blocks and slots.

[0008] The contact surfaces between the two joints and the surface of the small connecting pipe body are provided with balls.

[0009] Optionally, guide members are symmetrically fixed to the lower end of the positioning box, and each guide member includes a sleeve rod, a moving rod, a guide wheel, a moving screw, a moving groove and a limit nut. The moving rod is movably connected to the lower end of the sleeve rod, and the bottom of the moving rod is rotatably connected to the guide wheel that contacts the surface of the small pipe body. The front end of the moving rod is fixed with a moving screw, which is installed in a strip groove on the surface of the sleeve rod, and a limit nut is connected to the external thread of the moving screw. A scale groove is opened on the surface of the sleeve rod.

[0010] Optionally, a clamping block is fixed to the side of the joint, and a lower positioning rod for passing through the adjustment hole of the elastic strap is fixedly installed inside the clamping block, and multiple adjustment holes are provided at the upper and lower ends of the elastic strap. The front end of the clamping block is threadedly connected to a positioning bolt, and the bottom of the positioning bolt passes through the middle of the clamping block and is rotatably connected to the pressure plate, and a reserved hole is provided in the middle of the pressure plate to match the lower positioning rod, and the opposing surfaces of the pressure plate and the clamping block are integrally formed with multiple anti-slip protrusions.

[0011] Optionally, an upper positioning rod passing through the adjustment hole is fixed inside the positioning box, and a sleeve is sleeved on the outside of each upper positioning rod. The sleeve is fixedly installed on the bottom of the cover plate, and the cover plate is fixed to the positioning box through a limit bolt.

[0012] Optionally, wearing rings are fixed on both sides of the eddy current array detection host, and a Velcro strap is installed on the outside of one of the wearing rings.

[0013] Optionally, a solar photovoltaic panel is fixed on one side of the back of the shell of the modular display, and a box body is fixed on the other side of the back of the shell of the modular display. A backup battery is provided inside the box body, and the backup battery is connected to the solar photovoltaic panel circuit through a wire. The backup battery is also connected to a small inverter through a wire, and the small inverter is connected to the USB interface and TYPEC interface circuit on the surface of the box body through a wire.

[0014] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described below at the same time:

[0015] The utility model cooperates with the positioning box, the joint and the elastic binding belt so that the detection end of the wall thickness scanning head can contact the pipe wall of the small pipe body without the need for the detection personnel to hold it, thereby performing thickness detection. In addition, during the detection process, since there is no need for hand support, the data displayed on the modular display can be recorded, thereby improving the work efficiency of the detection personnel.

[0016] The specific implementation of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described below are only some embodiments. A person skilled in the art can derive other drawings based on these drawings without inventive effort. In the drawings:

[0018] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the combined parts of the modular display, box body and solar photovoltaic panel in the utility model;

[0020] Figure 3 This is a schematic diagram of the combined parts structure of the clamping block, the pressure plate and the positioning bolt in the utility model from another perspective;

[0021] Figure 4 This is a schematic diagram of the structure of the combined parts of the positioning box, the upper positioning rod and the cover plate in the utility model;

[0022] Figure 5 for Figure 1 Schematic diagram of the structure of part A;

[0023] Figure 6 for Figure 1 Schematic diagram of the structure of part B;

[0024] Figure 7 for Figure 1 Schematic diagram of the C part structure.

[0025] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0026] 1. Eddy current array detection host; 2. Wall thickness scanning head; 3. Modular display; 4. Detection end; 5. Positioning box; 6. Elastic strap; 7. Connector; 8. T-shaped block; 9. Ball bearing; 10. Sleeve rod; 11. Moving rod; 12. Guide wheel; 13. Moving screw; 14. Limit nut; 15. Clamp; 16. Adjustment hole; 17. Lower positioning rod; 18. Positioning bolt; 19. Pressure plate; 20. Anti-slip protrusion; 21. Upper positioning rod; 22. Sleeve; 23. Cover plate; 24. Limit bolt; 25. Wearing ring; 26. Velcro strap; 27. Solar photovoltaic panel; 28. Box body; 29. Backup battery; 30. Type inverter; 31. USB interface; 32. TYPEC interface.

[0027] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0028] The present invention will now be described in further detail with reference to the accompanying drawings.

[0029] See also Figures 1 to 7 The utility model provides a technical solution: an array eddy current scanning device for detecting wall thickness thinning of a small pipe body, comprising an eddy current array detection host 1, a modular display 3, and a wall thickness scanning head 2. The front end of the eddy current array detection host 1 is provided with an interface for connecting to the wall thickness scanning head 2 or the weld scanning head. The eddy current array detection host 1 is connected to the wall thickness scanning head 2 through a wire through the interface. One side of the eddy current array detection host 1 is connected to the modular display 3 through a wire.

[0030] A detection end 4 for fitting the small pipe body to detect the wall thickness is provided at the middle of the lower end of the wall thickness scanning head 2. Positioning boxes 5 are provided on the front and rear sides of the lower end of the wall thickness scanning head 2. Both ends of the positioning box 5 are provided with clearance holes for installing elastic binding bands 6. The ends of the two elastic binding bands 6 are fixed with joints 7. The opposite surfaces of the two joints 7 are respectively provided with T-shaped blocks 8 and slots.

[0031] The contact surfaces of the two joints 7 and the surface of the small pipe body are provided with balls 9. Considering that the inspector needs to watch the modular display 3 while holding the scanning head during the inspection process, and there is a situation where it is impossible to record at the same time, the utility model cooperates with the positioning box 5, the joint 7 and the elastic strap 6 to make the detection end 4 of the wall thickness scanning head 2 contact with the pipe wall of the small pipe body without the need for the inspector to hold it, so as to perform thickness detection. In addition, during the inspection process, since there is no need to hold it by hand, the data displayed on the modular display 3 can be recorded, which improves the work efficiency of the inspector. In addition, when the elastic strap 6 is tightened, the detection end 4 of the wall thickness scanning head 2 can contact the pipe wall of the small pipe body, so as to perform thickness detection. It can ensure that the detection end 4 of the wall thickness scanning head 2 fits tightly with the pipe wall of the small pipe. When the device is in use, the elastic strap 6 will be pulled to bypass the outside of the small pipe body, and then the two joints 7 will be fixed through the T-shaped block 8 and the slot. At this time, the detection end 4 of the wall thickness scanning head 2 fits with the surface of the small pipe. When it needs to be moved, pull the two elastic straps 6 so that the elastic straps 6 do not contact the pipe wall of the small pipe. Then, the guide wheel 12 will be used to move up or down with the ball 9 to change the detection position of the detection end 4. After moving, the elastic strap 6 will be loosened, and the fixation can be completed by tightening the elastic strap 6 to make it contact with the small pipe.

[0032] The bottom of the moving rod 11 is rotatably connected to the guide wheel 12 in contact with the surface of the small pipe body. The front end of the moving rod 11 is fixed with a moving screw 13, which is installed in the strip groove on the surface of the sleeve rod 10. The external thread of the moving screw 13 is connected to the limiting nut 14, and a scale groove is opened on the surface of the sleeve rod 10. By setting the guide and the ball 9, it is convenient for the user to move the wall thickness scanning head 2 without disassembling the joint 7. In order to make the detection end 4 of the wall thickness scanning head 2 fit the surface of the small pipe, the length of the moving wheel can be adjusted. When adjusting, loosen the limiting nut 14, and then move the moving screw 13 to make it move in the moving groove. After moving, tighten the limiting nut 14 to complete the fixation.

[0033] Among them, a clamping block 15 is fixed to the side of the joint 7, and a lower positioning rod 17 for passing through the adjustment hole 16 of the elastic binding band 6 is fixedly installed inside the clamping block 15, and multiple adjustment holes 16 are provided at the upper and lower ends of the elastic binding band 6. The front end of the clamping block 15 is threadedly connected with a positioning bolt 18, and the bottom of the positioning bolt 18 passes through the middle of the clamping block 15 and is rotatably connected to the pressure plate 19, and the middle of the pressure plate 19 is provided with a reserved hole adapted to the lower positioning rod 17. The opposing surfaces of the pressure plate 19 and the clamping block 15 are integrally formed with multiple anti-slip protrusions 20. By arranging the clamping block 15, the lower positioning rod 17, the pressure plate 19 and the positioning bolt 18, one end of the elastic binding band 6 is fixed. When the elastic binding band 6 is sleeved on the outside of the lower positioning rod 17 through the adjustment hole 16, the positioning bolt 18 is tightened so that the pressure plate 19 descends and contacts the elastic binding band 6 to complete the fixation.

[0034] Among them, an upper positioning rod 21 passing through the adjustment hole 16 is fixed inside the positioning box 5, and a sleeve 22 is sleeved on the outside of each upper positioning rod 21. The sleeve 22 is fixedly installed on the bottom of the cover plate 23, and the cover plate 23 is fixed to the positioning box 5 through a limit bolt 24. By setting the positioning box 5, the cover plate 23 and the upper positioning rod 21 cooperate with each other to fix the upper end of the elastic binding band 6, it is convenient for the later user to loosen the positioning bolt 18 and the limit bolt 24 to replace the elastic binding band 6.

[0035] Among them, wearing rings 25 are fixed on both sides of the eddy current array detection host 1, and a Velcro strap 26 is installed on the outside of one of the wearing rings 25. By setting the Velcro strap 26 in conjunction with the wearing ring 25, it is convenient for the user to carry the eddy current array detection host 1. When carrying it, the eddy current array detection host 1 can be tied around the waist of the medical user with the Velcro strap 26.

[0036] Among them, a solar photovoltaic panel 27 is fixed on one side of the back of the shell of the modular display 3, and a box body 28 is fixed on the other side of the back of the shell of the modular display 3. A backup battery 29 is provided inside the box body 28, and the backup battery 29 is connected to the solar photovoltaic panel 27 circuit through a wire. The backup battery 29 is also connected to the small inverter 30 through a wire. The small inverter 30 is connected to the USB interface 31 and the TYPEC interface 32 circuit on the surface of the box body 28 through a wire. Considering that the equipment needs to be used outdoors, when the device is out of power, it can be supplemented by a backup power supply, and the backup power supply can be supplemented by the solar photovoltaic panel 27.

[0037] The present invention is not limited to the above-described embodiments. Any structural changes made under the guidance of the present invention should be understood by anyone. Any technical solution that is the same or similar to the present invention falls within the scope of protection of the present invention. The technology, shape, and structure not described in detail in the present invention are all known technologies.

Claims

1. An array eddy current scanning device for detecting wall thickness reduction of a small pipe body, comprising an eddy current array detection host (1), a modular display (3) and a wall thickness scanning head (2), characterized in that: The front end of the eddy current array detection host (1) is provided with an interface for connecting to a wall thickness scanning head (2) or a weld scanning head. The eddy current array detection host (1) is connected to the wall thickness scanning head (2) circuit via a wire in conjunction with the interface. One side of the eddy current array detection host (1) is connected to the modular display (3) circuit via a wire. The middle part of the lower end of the wall thickness scanning head (2) is provided with a detection end (4) for fitting the small pipe body to detect the wall thickness. Positioning boxes (5) are provided on the front and rear sides of the lower end of the wall thickness scanning head (2). Both ends of the positioning box (5) are provided with clearance holes for installing elastic binding bands (6). The ends of the two elastic binding bands (6) are fixed with joints (7). The opposite surfaces of the two joints (7) are respectively provided with T-shaped blocks (8) and card slots. The contact surfaces between the two joints (7) and the surface of the small connecting pipe body are provided with balls (9).

2. The array eddy current scanning device for detecting wall thickness reduction of small pipe bodies according to claim 1 is characterized in that: The lower end of the positioning box (5) is symmetrically fixed with guide members, each of which includes a sleeve rod (10), a moving rod (11), a guide wheel (12), a moving screw (13), a moving groove and a limit nut (14). The lower end of the sleeve rod (10) is movably connected with the moving rod (11), and the bottom of the moving rod (11) is rotatably connected with the guide wheel (12) that contacts the surface of the small pipe body. The front end of the moving rod (11) is fixed with a moving screw (13), and the moving screw (13) is installed in the strip groove on the surface of the sleeve rod (10). The outer thread of the moving screw (13) is connected to the limit nut (14), and a scale groove is opened on the surface of the sleeve rod (10).

3. The array eddy current scanning device for detecting wall thickness reduction of small pipe bodies according to claim 1 is characterized in that: A clamping block (15) is fixed to the side of the joint (7), and a lower positioning rod (17) for penetrating the adjustment hole (16) of the elastic binding band (6) is fixedly installed inside the clamping block (15), and a plurality of adjustment holes (16) are provided at the upper and lower ends of the elastic binding band (6). The front end of the clamping block (15) is threadedly connected to a positioning bolt (18), the bottom of the positioning bolt (18) penetrates to the middle of the clamping block (15) and is rotatably connected to the pressure plate (19), and a reserved hole adapted to the lower positioning rod (17) is provided in the middle of the pressure plate (19), and the opposing surfaces of the pressure plate (19) and the clamping block (15) are integrally formed with a plurality of anti-slip protrusions (20).

4. The array eddy current scanning device for detecting wall thickness reduction of small pipe bodies according to claim 3 is characterized in that: An upper positioning rod (21) passing through the adjustment hole (16) is fixed inside the positioning box (5), and a sleeve (22) is sleeved on the outside of each upper positioning rod (21). The sleeve (22) is fixedly mounted on the bottom of the cover plate (23), and the cover plate (23) is fixed to the positioning box (5) through a limit bolt (24).

5. The array eddy current scanning device for detecting wall thickness reduction of small pipe bodies according to claim 1 is characterized in that: Wearing rings (25) are fixed on both sides of the eddy current array detection host (1), and a Velcro strap (26) is installed on the outside of one of the wearing rings (25).

6. The array eddy current scanning device for detecting wall thickness reduction of small pipe bodies according to claim 1 is characterized in that: A solar photovoltaic panel (27) is fixed on one side of the back of the shell of the modular display (3), and a box body (28) is fixed on the other side of the back of the shell of the modular display (3). A backup battery (29) is provided inside the box body (28), and the backup battery (29) is connected to the solar photovoltaic panel (27) circuit through a wire. The backup battery (29) is also connected to a small inverter (30) through a wire, and the small inverter (30) is connected to the USB interface (31) and the TYPEC interface (32) on the surface of the box body (28) through a wire.

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