Microwave flaw detection system

Abstract

The utility model relates to a microwave flaw detection system, which is used for carrying out clamping and complete-cycle microwave flaw detection on a workpiece, and comprises a positioning module, a detection module, a detection module and a control module, and is characterized in that the positioning module comprises a base and a pair of positioning blocks arranged on the base; the clamping module comprises a clamping block capable of abutting against the positioning block, a sealing assembly connected with the clamping block and a pressing assembly used for applying horizontal external force to the sealing assembly; the workpiece is clamped between the clamping blocks at the two ends; the rotating module comprises a rotating shaft which horizontally penetrates through the rotating shaft and is connected with the clamping block; the flaw detection module comprises a supporting rod and a horn mouth positioning piece arranged on the supporting rod, and the top end of the horn mouth positioning piece is provided with a microwave horn mouth used for conducting flaw detection on the workpiece. Compared with the prior art, the microwave flaw detection system disclosed by the utility model can be used for stably clamping and stably detecting flaws of workpieces such as gas cylinders, tubular equipment and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to microwave detection technical field especially is related to a microwave flaw detection system. BACKGROUND

[0002] The microwave flaw detection technology is a kind of non-contact detection method, it detects the defect in material by emitting microwave and receiving the signal reflected back.When microwave meets the defect in material, due to the dielectric constant of defect and surrounding material is different, it will cause the change of microwave reflection signal, and the information of defect can be obtained by analyzing these changes.Microwave flaw detection is commonly used in pipeline transportation, ship, aerospace, aviation, equipment, automobile, track bridge and building infrastructure reliability and safety inspection.

[0003] In the current microwave flaw detection process, horn mouth piece as horn antenna, play the role of emitting waveguide signal.Horn mouth increases the microwave radiation aperture, can obtain higher gain, even in the relatively poor environment, can obtain better directivity diagram.However, in actual operation, horn mouth piece is usually handheld, and the instability of hand holding often leads to the instability of the process of microwave flaw detection, and it is difficult to realize the full week detection to gas cylinder or tubular equipment.

[0004] Therefore, it is urgent to develop a new detection system capable of microwave flaw detection of gas cylinder or tubular equipment. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the defects of low stability and difficult to realize full week detection of existing microwave flaw detection and provides a kind of microwave flaw detection system.

[0006] The utility model can realize the purpose by the following technical scheme:

[0007] A kind of microwave flaw detection system, for clamping and full week microwave flaw detection of workpiece, comprising:

[0008] Positioning module, it includes base and the positioning block of being arranged on base a pair;

[0009] Clamping module, it includes the clamping block that can be abutted with positioning block, sealing assembly connected with clamping block and the compression assembly for applying horizontal external force to sealing assembly;The workpiece is clamped between the clamping block of two ends;

[0010] Rotary module, it includes horizontal through positioning block and be connected with clamping block rotation axis;

[0011] Flaw detection module, it includes support rod and horn mouth positioning piece arranged on support rod, and the top of horn mouth positioning piece is equipped with the microwave horn mouth for the flaw detection of workpiece.

[0012] Further, the overall shape of the positioning block is a right-angled triangle, the right-angled side of the positioning block is vertically arranged with the base, and the oblique side of the positioning block is provided with a positioning assembly.

[0013] Further, the positioning assembly comprises a fastening boss and a positioning fastener vertically penetrating the fastening boss and being positioned and matched with the base.

[0014] Further, a plurality of positioning holes capable of being positioned and matched with the positioning fastener are equidistantly arranged on the base.

[0015] Further, the clamping block is in a C-shaped structure, and the two ends of the C-shaped structure are provided with sealing assemblies and pressing assemblies.

[0016] Further, the sealing assembly comprises a sealing block connected with the clamping block, and a sealing member is arranged in a sealing gap between the sealing block and the clamping block.

[0017] Further, the pressing assembly comprises a pressing block connected with the sealing block, a sealing platform connected with the pressing block, and a sealing fastener threadedly matched with the pressing block and the sealing platform.

[0018] Further, the pressing block and the sealing platform are both provided with horizontal and coaxial threaded holes.

[0019] Further, the contact surface of the sealing block and the pressing block is provided with a concave-convex structure.

[0020] Further, the rotating shaft is connected with the central region of the clamping block, and the end of the rotating shaft extending out of the positioning block is provided with a rotating handle.

[0021] Further, the bottom of the supporting rod is provided with a supporting base.

[0022] Further, the horn positioning member comprises a first connecting rod connected with the supporting rod and a second connecting rod connected with the first connecting rod.

[0023] Further, the first connecting rod is mounted on the supporting rod through a fixing assembly, and the microwave horn is arranged at the top end of the second connecting rod.

[0024] Compared with the prior art, the microwave flaw detection system has the following beneficial effects:

[0025] (1) The microwave flaw detection system can stably clamp the two ends of the workpiece to be detected between the two positioning blocks of the positioning module, and then perform microwave flaw detection through the flaw detection module, so that stable clamping and stable flaw detection of the workpiece such as a gas cylinder and a tubular device are realized; in addition, the clamping block and the workpiece can be rotated around the shaft by rotating the rotating shaft, so that the workpiece can rotate on the microwave detection table, and the flaw detection module remains stationary, so that microwave flaw detection of the whole circumference at one position can be realized.

[0026] (2) The clamping module can greatly improve the stability of clamping workpieces through two sealing and mechanical cooperation structures, and realize omnibearing clamping.

[0027] (3) The positioning block can move on the base, thereby adjusting the distance between the clamping blocks, so that the microwave flaw detection system can clamp and detect hydrogen storage cylinders of different specifications, and realize multi-specification flaw detection. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the microwave flaw detection system of the utility model.

[0029] Figure 2 It is a schematic diagram of the structure of the positioning module and the rotating module of the utility model.

[0030] Figure 3 It is a top view of the base and the positioning block of the embodiment 2 of the utility model.

[0031] Figure 4 It is a schematic diagram of the structure of the clamping module of the embodiment 3 of the utility model.

[0032] Figure 5 It is a schematic diagram of the structure of the flaw detection module of the embodiment 5 of the utility model.

[0033] Marking description in the figure:

[0034] 1 - workpiece;

[0035] 2 - positioning module, 21 - base, 211 - positioning hole, 22 - positioning block, 23 - positioning assembly, 231 - fastening boss, 232 - positioning fastener;

[0036] 3 - clamping module, 31 - clamping block, 32 - sealing assembly, 321 - sealing block, 322 - sealing piece, 33 - pressing assembly, 331 - pressing block, 332 - sealing table, 333 - sealing fastener;

[0037] 4 - rotating module, 41 - rotating shaft, 42 - rotating handle;

[0038] 5 - flaw detection module, 51 - support rod, 52 - horn positioning piece, 521 - first connecting rod, 522 - second connecting rod, 53 - microwave horn, 54 - support base, 55 - fixing assembly. DETAILED DESCRIPTION

[0039] The utility model will be explained in detail below in combination with the drawings and specific embodiments. The embodiments are implemented on the premise of the technical scheme of the utility model, and detailed implementation modes and specific operation processes are given, but the protection scope of the utility model is not limited to the following embodiments.

[0040] In the utility model, it needs to be explained that the directions or position relations indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and thus cannot be understood as limiting the utility model; the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the communication inside two elements. For ordinary skilled persons in the art, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0041] It should be noted that: similar signs and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0042] Embodiment 1:

[0043] A microwave flaw detection system for clamping and full-circle microwave flaw detection of a workpiece 1, comprising a positioning module 2, a clamping module 3, a rotating module 4 and a flaw detection module 5.

[0044] The positioning module 2 comprises a base 21 and a pair of positioning blocks 22 arranged on the base 21. The clamping module 3 comprises a clamping block 31 capable of abutting against the positioning blocks 22, a sealing assembly 32 connected with the clamping block 31 and a pressing assembly 33 for applying a horizontal external force to the sealing assembly 32, and the workpiece 1 is clamped between the clamping blocks 31 at both ends. The rotating module 4 comprises a rotating shaft 41 horizontally penetrating through the positioning blocks 22 and connected with the clamping blocks 31. The flaw detection module 5 comprises a supporting rod 51 and a horn positioning piece 52 arranged on the supporting rod 51, and the top end of the horn positioning piece 52 is provided with a microwave horn 53 for flaw detection of the workpiece 1.

[0045] The workpiece 1 to be tested in this embodiment can be an industrial commonly used hydrogen storage cylinder or a composite plate material tubular equipment. In the microwave flaw detection, the two ends of the workpiece 1 are clamped and fixed between the two positioning blocks 22 of the positioning module 2 through the clamping module 3, and then the microwave flaw detection is performed through the flaw detection module 5. When the full-circle flaw detection of a certain position of the workpiece 1 is needed, the clamping block 31 and the workpiece 1 can be rotated around the shaft by rotating the rotating shaft 41.

[0046] Embodiment 2

[0047] A microwave flaw detection system for clamping and full-circle microwave flaw detection of a workpiece 1, comprising a positioning module 2, a clamping module 3, a rotating module 4 and a flaw detection module 5.

[0048] The difference from embodiment 1 is that the base 21 of this embodiment is a channel steel structure of an I-shaped steel, and the overall shape of the positioning block 22 of this embodiment is a right-angled triangle. The right-angled side of the positioning block 22 is arranged vertically with the base 21, and the inclined side of the positioning block 22 is provided with a positioning assembly 23. The positioning assembly 23 comprises a fastening boss 231 and a positioning fastener 232 vertically penetrating the fastening boss 231 and being positioned and matched with the base 21, and a plurality of positioning holes 211 capable of being positioned and matched with the positioning fastener 232 are arranged on the base 21 at equal intervals.

[0049] The positioning block 22 of this embodiment abuts against the clamping block 31, the fastening boss 231 is located on the inclined surface of the positioning block 22, and is fixed on the channel steel base 21 through the positioning fastener 232. The positioning block 22 can move on the base 21, and a plurality of circular positioning holes 211 are arranged on the base 21 at equal intervals, so as to adapt to different adjustment lengths, so that the microwave flaw detection system of this embodiment can fix and detect different workpieces 1, and realize the flaw detection of workpieces 1 of multiple specifications. The triangular positioning block 22 can be selected from solid triangular blocks or ribbed plates and the like to ensure the stability of the positioning module 2. The conventional bolt and nut structure of the positioning fastener 232 can position the fastening boss 231 on the inclined surface of the positioning block 22 and fasten it on the base 21.

[0050] Embodiment 3

[0051] A microwave flaw detection system for clamping and full-circle microwave flaw detection of a workpiece 1, comprising a positioning module 2, a clamping module 3, a rotating module 4 and a flaw detection module 5.

[0052] The difference between this embodiment and example 1 is that the clamping block 31 of this embodiment is in C-shaped structure, and the two ends of the C-shaped structure are provided with sealing assembly 32 and pressing assembly 33. The sealing assembly 32 comprises a sealing block 321 connected with the clamping block 31, and a sealing element 322 is arranged in the sealing gap between the sealing block 321 and the clamping block 31, and the sealing element 322 can be selected from commonly used wedge-shaped sealing gaskets. The pressing assembly 33 comprises a pressing block 331 connected with the sealing block 321, a sealing platform 332 connected with the pressing block 331, and a sealing fastener 333 threadedly matched with the pressing block 331 and the sealing platform 332, and the pressing block 331 and the sealing platform 332 are both provided with horizontal and coaxial threaded holes. The contact surface of the sealing block 321 and the pressing block 331 is provided with a concave-convex structure.

[0053] The sealing block 321 of this embodiment abuts against the end surface of the workpiece 1, and the other surface is subjected to external force by the threaded cooperation of the sealing fastener 333 with the pressing block 331 and the sealing platform 332. The threaded holes are arranged on the pressing block 331 and the sealing platform 332 to realize the fixation of the pressing block 331 and the sealing platform 332 and realize the external pressure action on the whole clamping module 3. Under the action of the force, the wedge-shaped sealing gasket is deformed under stress. A plurality of reinforcing rings are arranged in the sealing block 321 to prevent the sealing block 321 from being crushed under pressure.

[0054] The clamping module 3 of this embodiment has two sealing and mechanical cooperation structures: one is that the end of the pressing block 331 in contact with the sealing block 321 is provided with a concave-convex structure, so that the sealing surface is expanded from the original one plane to five planes, thereby ensuring effective clamping. The second is that the sealing element 322 is made of flexible material (such as graphite or rubber) and can be deformed under pressure to eliminate the gap between the sealing element 322, the clamping block 31 and the sealing block 321. The above two seals can effectively ensure the clamping performance of the clamping module 3 of this embodiment.

[0055] Example 4:

[0056] A microwave flaw detection system for clamping and full-circle microwave flaw detection of a workpiece 1, comprising a positioning module 2, a clamping module 3, a rotating module 4 and a flaw detection module 5.

[0057] The difference between this embodiment and example 1 is that the rotating shaft 41 horizontally penetrates through the positioning block 22 and is fixedly connected with the central region of the clamping block 31. The end of the rotating shaft 41 protruding out of the positioning block 22 is provided with a rotating handle 42, and the rotating handle 42 can adopt a hexagonal structure convenient for grabbing.

[0058] When the full-circle microwave flaw detection of a certain position of the workpiece 1 is needed, only need to drive the rotating shaft 41 to rotate through the rotating handle 42, and then drive the workpiece 1 clamped between the clamping blocks 31 to rotate around the shaft, at this time the microwave horn mouth 53 position remains unchanged, thus the full-circle microwave flaw detection of the specific position can be realized.

[0059] Embodiment 5:

[0060] A microwave flaw detection system for clamping and full-circle microwave flaw detection of a workpiece 1, comprising a positioning module 2, a clamping module 3, a rotating module 4 and a flaw detection module 5. The flaw detection module 5 comprises a support rod 51 and a horn mouth positioning piece 52 provided on the support rod 51, and the top end of the horn mouth positioning piece 52 is provided with a microwave horn mouth 53 for flaw detection of the workpiece 1.

[0061] The difference from the embodiment 1 is that the support rod 51 of the embodiment adopts the common I-shaped steel structure. The bottom of the support rod 51 is provided with a support base 54 to increase the stability of the microwave flaw detection. The horn mouth positioning piece 52 comprises a first connecting rod 521 connected with the support rod 51 and a second connecting rod 522 connected with the first connecting rod 521. The first connecting rod 521 is installed on the support rod 51 through a fixing assembly 55, and the fixing assembly 55 selects a conventional positioning nut, a fastening washer and a positioning bolt to realize the positioning and fixing of one end of the first connecting rod 521, and the inclination angle of the first connecting rod 521 can be adjusted by adjusting the tightness of the nut and bolt to meet the microwave flaw detection requirements of different heights. The first connecting rod 521 and the second connecting rod 522 can be connected through a hinge, so that the second connecting rod 522 can be adjusted to remain in a vertical state when the first connecting rod 521 is inclined.

[0062] The microwave horn mouth 53 of the embodiment is provided at the top end of the second connecting rod 522, and the microwave horn mouth 53 can be threadedly connected with the second connecting rod 522. The microwave horn mouth 53 can be made into various specifications and shapes, and the thread ports of the microwave horn mouth 53 and the second connecting rod 522 can be made into standard parts. The microwave horn mouth 53 is a microwave signal generating device, which functions to control the emission direction and power of the microwave source. When the microwave signal passes through a square or circular horn hole, different structures and geometric sizes of the horn mouth will have reflection and interference effects, resulting in different radiation power and signal strength. The microwave generated by the microwave horn mouth 53 travels along the waveguide on the surface of the workpiece 1. If the surface of the workpiece 1 has a structural discontinuity feature, the waveguide will reflect its signal back into the horn mouth, at which time the horn mouth functions as a receiver, thereby realizing the detection of the complete structure and defects of the workpiece.

[0063] The above description of the embodiments is to facilitate the ordinary skilled in the art to understand and use the utility model. The person skilled in the art can obviously easily make various modifications to these embodiments, and the general principles described herein are applied to other embodiments without the need for creative labor. Therefore, the utility model is not limited to the above embodiments, and the improvements and modifications made by the person skilled in the art according to the disclosure of the utility model without departing from the scope of the utility model should be within the protection scope of the utility model.

Claims

1. A microwave flaw detection system for clamping and full circumferential microwave flaw detection of a workpiece (1), characterized in that The utility model relates to a workpiece positioning and sealing device, which comprises a positioning module (2), a clamping module (3) and a rotating module (4). The positioning module (2) comprises a base (21) and a pair of positioning blocks (22) arranged on the base (21). The clamping module (3) comprises a clamping block (31) capable of abutting against the positioning blocks (22), a sealing assembly (32) connected with the clamping block (31), and a pressing assembly (33) for applying a horizontal external force to the sealing assembly (32). The workpiece (1) is clamped between the clamping blocks (31) at both ends. The rotating module (4) comprises a rotating shaft (41) horizontally penetrating through the positioning blocks (22) and connected with the clamping blocks (31).

2. The microwave inspection system of claim 1, wherein, The rotating shaft (41) is connected with the central region of the clamping block (31), and the end of the rotating shaft (41) extending out of the positioning block (22) is provided with a rotating handle (42).

3. The microwave inspection system of claim 2, wherein: The flaw detection module (5) comprises a supporting rod (51) and a horn positioning piece (52) arranged on the supporting rod (51). ​ The top end of the horn positioning piece (52) is provided with a microwave horn (53) for flaw detection of the workpiece (1).

4. The microwave inspection system of claim 1, wherein, The overall shape of the positioning block (22) is a right-angled triangle, and the right-angled side of the positioning block (22) is arranged vertically with the base (21).

5. The microwave inspection system of claim 1, wherein, The oblique side of the positioning block (22) is provided with a positioning assembly (23).

6. The microwave inspection system of claim 5, wherein, The positioning assembly (23) comprises a fastening boss (231) and a positioning fastener (232) vertically penetrating through the fastening boss (231) and being positioned and matched with the base (21). A plurality of positioning holes (211) capable of being positioned and matched with the positioning fastener (232) are arranged at equal intervals on the base (21).

7. The microwave inspection system of claim 6, wherein The clamping block (31) is in a C-shaped structure, and the two ends of the C-shaped structure are provided with the sealing assembly (32) and the pressing assembly (33).

8. The microwave inspection system of claim 1, wherein, The sealing assembly (32) comprises a sealing block (321) connected with the clamping block (31), and a sealing member (322) arranged in the sealing gap between the sealing block (321) and the clamping block (31).

9. The microwave inspection system of claim 1, wherein, The pressing assembly (33) comprises a pressing block (331) connected with the sealing block (321), a sealing table (332) connected with the pressing block (331), and a sealing fastener (333) threadedly matched with the pressing block (331) and the sealing table (332). The pressing block (331) and the sealing table (332) are both provided with horizontal and coaxial threaded holes. The contact surface of the sealing block (321) and the pressing block (331) is provided with a concave-convex structure. The bottom of the supporting rod (51) is provided with a supporting base (54). The horn positioning piece (52) comprises a first connecting rod (521) connected with the supporting rod (51) and a second connecting rod (522) connected with the first connecting rod (521). The first connecting rod (521) is installed on the supporting rod (51) through a fixing assembly (55), and the microwave horn (53) is arranged at the top end of the second connecting rod (522).

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