Metallographic detection device for high-temperature heating surface of boiler

Abstract

The utility model provides a boiler high-temperature heating surface metallographic detection device which comprises a clamping device and a metallographic photographing device, the clamping device comprises a connecting part, a clamping part and connecting rods, the connecting rods are arranged on the two sides of the connecting part, one end of each connecting rod is connected with the connecting part, the other end of each connecting rod is connected with the clamping part, and the clamping part is used for clamping and fixing a to-be-detected piece; the metallographic photographing device is mounted on the connecting part and moves relative to the connecting part so as to adjust the distance between the metallographic photographing device and the to-be-detected piece; during actual operation, the adjustable strong magnetic adsorption pair is mounted on the hoop, a to-be-detected part is clamped by adjusting the magnetism of the adjustable strong magnetic adsorption pair, and the clamp can adapt to metallographic detection of nonmagnetic materials such as austenitic stainless steel; meanwhile, the position of the metallographic photographing device is adjusted according to the metallographic position of the on-site heating surface, and the on-site applicability is high. In addition, the device has the advantages of being simple in structure, convenient to disassemble and assemble, convenient to fold and carry and the like.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of metallographic detection of heated surfaces, and particularly relates to a boiler high-temperature heated surface metallographic detection device. BACKGROUND

[0002] Metallographic detection is a material detection method for observing and analyzing the microstructure of metal materials. By treating metal samples through polishing, grinding, etching, dyeing and the like, the microstructure, grain structure, impurities and defects of the materials are analyzed and detected by a metallographic microscope, and the method is widely used in scientific research and production of metal materials in the fields of industry, metallurgy, aerospace, automobiles and rail transportation.

[0003] At present, portable magnetic base type photographing devices or metallographic film coating methods are mostly used for on-site metallographic detection of boiler high-temperature heated surfaces. The former cannot be well applied to non-magnetic materials such as austenitic stainless steel, and the magnetic base often cannot be firmly attracted and focused clearly for small-diameter heated surfaces. The metallographic film coating method cannot obtain metallographic photos in the first time on site, and the shooting effect is also affected by the quality of the film coating. CONTENT OF THE INVENTION

[0004] Therefore, the purpose of the present application is to provide a boiler high-temperature heated surface metallographic detection device, which at least solves one technical problem in the prior art.

[0005] In order to solve the above problems, the present application provides a boiler high-temperature heated surface metallographic detection device, which comprises a clamping device and a metallographic photographing device. The clamping device comprises a connecting part, a clamping part and a connecting rod. The connecting rod is arranged on both sides of the connecting part, and one end of the connecting rod is connected with the connecting part, and the other end of the connecting rod is connected with the clamping part. The clamping part is used for clamping and fixing a detection piece. The metallographic photographing device is installed on the connecting part. The metallographic photographing device moves relative to the connecting part to adjust the distance between the metallographic photographing device and the detection piece.

[0006] Optionally, the clamping part comprises a clamp and an adjustable strong magnetic adsorption pair. The clamp is arranged on the detection piece, and the end face of the clamp is provided with the adjustable strong magnetic adsorption pair. The adjustable strong magnetic adsorption pair is used for tightly holding the detection piece.

[0007] Optionally, the clamp comprises two half-ring type clamps, and the two clamps are connected through a hinge shaft. After the two clamps are buckled, a clamping space for clamping the detection piece is formed, and the two adjustable strong magnetic adsorption pairs are arranged on both sides of the clamping space.

[0008] Optionally, the clamp further comprises an anti-skid rubber pad, and the anti-skid rubber pad is arranged on the inner wall of the clamp.

[0009] Optionally, the connecting part is a lens carrier ring, an inner hole surface of the lens carrier ring is provided with an internal thread, the metallographic photographing device is processed with an external thread, and the external thread is matched with the internal thread to threadedly connect the metallographic photographing device on the lens carrier ring.

[0010] Optionally, the to-be-detected piece includes a weld; when the clamping device clamps the to-be-detected piece, the two clamping parts are located on two sides of the weld of the to-be-detected piece, and the clamping part, the connecting part, the connecting rod and the to-be-detected piece form a triangle structure.

[0011] Optionally, the clamping device further includes a universal ball head damping hinge, and the universal ball head damping hinge is arranged between the connecting rod and the connecting part and between the connecting rod and the clamping part.

[0012] Optionally, the universal ball head damping hinge includes a connecting column and a base, the connecting column includes a first end and a second end, the first end of the connecting column is provided with a damping ball, and the second end of the connecting column is connected with the base through a torsion adjusting nut; the universal ball head damping hinge is connected with the connecting part or the clamping part through the base, and the universal ball head damping hinge is connected with the connecting rod through the damping ball.

[0013] Optionally, the first end of the connecting column is provided with a spherical groove, and the damping ball is arranged in the spherical groove of the first end of the connecting column.

[0014] Optionally, a threaded hole is arranged on the damping ball, and the first end and the second end of the connecting rod are processed with external threads; and the connecting rod is screwed in the threaded hole of the damping ball through the external threads.

[0015] By means of the above technical scheme, the present application has at least the following beneficial effects:

[0016] The metallographic detection device for a high-temperature heating surface of a boiler provided in the present application can clamp a to-be-detected piece by adjusting the magnetism of the adjustable strong magnetic attraction pair when the clamp is installed with the adjustable strong magnetic attraction pair, so that the metallographic detection of non-magnetic materials such as austenitic stainless steel can be adapted; meanwhile, the device can adjust the position of the metallographic photographing device according to the metallographic position of the on-site heating surface, so that the on-site applicability is strong. In addition, the device also has the advantages of simple structure, convenient disassembly and assembly, convenient folding and carrying, and the like. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a schematic diagram of a metallographic detection device for a high-temperature heating surface of a boiler according to an embodiment of the present application;

[0018] Figure 2The universal ball head damping hinge of the boiler high-temperature heating surface metallographic detection device of the embodiment of the application is shown in the drawing.

[0019] Figure 3 The universal ball head damping hinge of the boiler high-temperature heating surface metallographic detection device of the embodiment of the application is shown in the drawing. Figure 1 The A part in the drawing of the embodiment of the application is shown in the drawing.

[0020] The reference signs are shown as follows:

[0021] 1, metallographic photographing device; 2, metallographic fine adjustment knob; 3, external thread; 4, mirror carrier ring; 5, universal ball head damping hinge; 501, damping ball; 502, connecting column; 503, base; 504, threaded hole; 505, torsion adjusting nut; 506, bolt hole; 6, connecting rod; 7, clamp; 8, hinge shaft; 9, adjustable strong magnetic adsorption pair; 10, magnetic adsorption switch; 11, to-be-detected piece; 12, weld; 13, objective lens. DETAILED DESCRIPTION

[0022] In the description of the present application, it needs to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0023] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0024] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, 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 indirectly connected through an intermediate medium, or can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] The preferred embodiments of the utility model are described below in combination with the drawings, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model.

[0026] In combination with the drawings, Figures 1 to 3 As shown in the drawings, according to the embodiments of the present application, a kind of boiler high temperature heating surface metallographic detection device is provided, including clamping device and metallographic photographing device 1, clamping device includes connecting portion, clamping portion and connecting rod 6, connecting rod 6 is arranged at the two sides of connecting portion, and one end is connected with connecting portion, the other end is connected with clamping portion, and clamping portion is used to clamp and fix the piece to be detected 11;Metallographic photographing device 1 is installed on connecting portion, and metallographic photographing device 1 moves relative to connecting portion 4, to adjust the distance between metallographic photographing device 1 and the piece to be detected 11.

[0027] The piece to be detected 11 is installed on clamping portion and clamped by clamping portion, and at the same time, the weld 12 of the piece to be detected 11 is located between clamping portion;Metallographic photographing device 1 is rotated to adjust the distance between metallographic photographing device 1 and the weld 12 of the piece to be detected 11 to obtain clear image, to photograph the position of weld 12, and obtain metallographic photo. By adjusting the magnetism of clamping portion to clamp the piece to be detected 11, the metallographic detection of austenitic stainless steel and other non-magnetic materials can be adapted;At the same time, the device adjusts the position of metallographic photographing device according to the metallographic position of the heating surface on site, and has strong on-site applicability. In addition, the device also has the advantages of simple structure, convenient disassembly and assembly, convenient folding and carrying, etc.

[0028] Among them, connecting rod 6 is arranged at the two sides of connecting portion, and one end is fixed with connecting portion, and the other end is connected with clamping portion, and clamping portion is used to clamp and fix the piece to be detected 11. That is to say, two connecting rods 6 are relatively arranged at the two sides of connecting portion, and here, in use, connecting rod 6 can be rotated to working position relative to connecting portion;After use, connecting rod 6 can be rotated to folding position relative to connecting portion, to fold the metallographic detection device, and facilitate carrying.

[0029] Among them, metallographic photographing device 1 is installed on connecting portion, and metallographic photographing device 1 moves relative to connecting portion 4, to adjust the distance between metallographic photographing device 1 and the piece to be detected 11. That is to say, the shooting end of metallographic photographing device 1 is installed towards the piece to be detected 11, and metallographic photographing device 1 can be moved towards or away from the piece to be detected 11 by rotating metallographic photographing device 1, to coarsely adjust the position of metallographic photographing device 1.

[0030] Specifically, metallographic photographing device 1 is installed above connecting portion with metallographic fine adjustment knob 2, and the focal length of metallographic photographing device 1 is adjusted by metallographic fine adjustment knob 2 until the metallographic structure in field of view is clear and visible for photographing.

[0031] Specifically, the metallographic imaging device 1 has an objective lens 13 at the imaging end, that is, the end facing the workpiece 11 to be inspected; it is used to capture the weld 12 and image it on the photosensitive element of the metallographic imaging device 1.

[0032] In other embodiments, the clamping part includes a clamp 7 and an adjustable strong magnetic adsorption pair 9. The clamp 7 is clamped on the workpiece 11 to be tested, and the end face of the clamp 7 is provided with an adjustable strong magnetic adsorption pair 9, which is used to hold the workpiece 11 to be tested tightly.

[0033] The clamp 7 is attached to the workpiece 11 to be tested. The end face of the clamp 7 is provided with an adjustable strong magnetic adsorption pair 9. That is to say, the clamp 7 is used to hug the workpiece 11 to be tested, while the adjustable strong magnetic adsorption pair 9 is arranged one above the other on both sides of the workpiece 11 to be tested. The adjustable strong magnetic adsorption pair 9 is magnetized, and the two adjustable strong magnetic adsorption pairs 9 attract each other and clamp the workpiece 11 to be tested, so as to clamp the non-magnetic material such as austenitic stainless steel. In this way, under the condition of firm adsorption, a clear image can be obtained by focusing.

[0034] Specifically, the adjustable strong magnetic adsorption pair 9 is equipped with a magnetic switch 10. Turning on the magnetic switch 10 energizes the adjustable strong magnetic adsorption pair 9, generating a magnetic field to clamp the workpiece 11 to be tested. After the workpiece 11 is tested, the power is cut off. To eliminate residual magnetism, a reverse current can be briefly applied to demagnetize the adjustable strong magnetic adsorption pair 9.

[0035] In other embodiments, the clamp 7 includes two semi-circular retaining rings 701, which are connected by a hinge shaft 8. When the two retaining rings 701 are engaged, they form a clamping space for holding the workpiece 11 to be tested. Two adjustable strong magnetic adsorption pairs 9 are arranged opposite each other on both sides of the clamping space.

[0036] The two-piece retaining ring 701 is connected by a hinge shaft 8. Firstly, it allows for quick engagement and disengagement, creating a clamping space for easy placement and removal of the workpiece 11. This design significantly improves testing efficiency and reduces operation time. Secondly, the semi-circular retaining ring 701 allows the clamp 7 to adapt to workpieces 11 of different shapes and sizes, exhibiting good versatility and flexibility. Thirdly, the clamp 7 has a simple structure and is easy to operate, requiring no complex tools or techniques for installation and disassembly. This design makes the clamp more convenient in practical use and reduces operational difficulty. Fourthly, the clamping method of the clamp 7 causes minimal damage to the surface of the workpiece, effectively protecting its integrity. This is particularly important for testing tasks with high surface quality requirements.

[0037] Two adjustable strong magnetic adsorption pairs 9 are arranged opposite each other on both sides of the clamping space, providing a stable clamping force to ensure that the workpiece 11 to be tested will not loosen or shift during the testing process. This strong magnetic adsorption design not only enhances the reliability of clamping but also adapts to workpieces of different sizes. Furthermore, the adjustable strong magnetic adsorption pairs 9 can adjust the clamping force according to specific needs, further improving its adaptability.

[0038] In other embodiments, the clamp 7 also includes an anti-slip pad, which is disposed on the inner wall of the retaining ring 701.

[0039] The anti-slip pad is installed on the inner wall of the retaining ring 701. That is, an anti-slip pad is installed on the inner wall of the retaining ring 701. When the workpiece 11 to be tested is installed on the clamp 7, the workpiece 11 to be tested is in direct contact with the anti-slip pad. First, the anti-slip pad is usually made of a soft and elastic material, such as rubber or silicone, which can prevent the clamp 7 from directly contacting the workpiece 11 to be tested, thereby reducing scratches or damage to the surface of the object. Second, the anti-slip pad can significantly increase the friction between the clamp 7 and the workpiece 11 to be tested, preventing the workpiece 11 to be tested from sliding or shifting during the clamping process, thereby ensuring the stability and reliability of the testing process.

[0040] In other embodiments, the connecting part is a lens carrier ring 4, the inner surface of the lens carrier ring 4 is provided with an internal thread, and the metallographic imaging device 1 is machined with an external thread. The external thread and the internal thread cooperate to make the metallographic imaging device 1 threadedly connected to the lens carrier ring 4.

[0041] The inner surface of the lens carrier ring 4 is provided with an internal thread, and the metallographic imaging device 1 is machined with an external thread. The external thread mates with the internal thread so that the metallographic imaging device 1 is threadedly connected to the lens carrier ring 4. In other words, the metallographic imaging device 1 is installed on the lens carrier ring 4 by means of a threaded connection. When the metallographic imaging device 1 is rotated, the relative rotation between the metallographic imaging device 1 and the lens carrier ring 4 is converted into linear motion, so as to adjust the distance between the metallographic imaging device 1 and the workpiece 11 to be inspected, thereby further improving the clarity of the metallographic images.

[0042] In other embodiments, the component to be tested 11 includes a weld 12; when the clamping device clamps the component to be tested 11, the two clamping parts are located on both sides of the weld 12 of the component to be tested 11, and the clamping parts, connecting parts, connecting rod 6 and the component to be tested 11 together form a triangular structure.

[0043] When the clamping device clamps the workpiece 11 to be inspected, the two clamping parts are located on both sides of the weld 12 of the workpiece 11. That is to say, the clamping parts are located on both sides of the weld 12, which can ensure that the weld 12 is accurately clamped and fixed. This design makes the workpiece 11 to be inspected stable during the inspection process, and the weld 12 is always in the optimal inspection position.

[0044] The clamping part, connecting part, connecting rod 6, and the workpiece 11 to be tested together form a triangular structure. This design significantly enhances the stability of the entire clamping device and reduces shaking caused by external forces or vibrations. It ensures that the workpiece to be tested remains stationary during the testing process, thereby improving the imaging accuracy of the metallographic imaging device 1 and avoiding unclear metallographic images caused by shaking.

[0045] In other embodiments, the clamping device further includes a universal ball joint damping hinge 5, which is provided between the connecting rod 6 and the connecting part, and between the connecting rod 6 and the clamping part. The universal ball joint damping hinge 5 provides three rotational degrees of freedom, enabling omnidirectional angle adjustment in space without being limited by a specific direction. Furthermore, by providing the universal ball joint damping hinge 5, during use, twisting the metallographic imaging device 1 can drive the connecting rod 6 to make a coordinated deformation action, thereby adjusting the objective lens 13 on the metallographic imaging device 1 to extend vertically towards the weld 12 position of the workpiece 11 to be inspected.

[0046] In other embodiments, the universal ball joint damping hinge 5 includes a connecting post 502 and a base 503. The connecting post 502 includes a first end and a second end. The first end of the connecting post 502 is provided with a damping ball 501. The second end of the connecting post 502 is connected to the base 503 through a torque adjusting nut 507. The universal ball joint damping hinge 5 is connected to the connecting part or the clamping part through the base 503. At the same time, the universal ball joint damping hinge 5 is connected to the connecting rod 6 through the damping ball 501.

[0047] By installing the damping ball 501 on the connecting column 502, the connecting rod 6 can achieve three rotational degrees of freedom relative to the connecting column 502, enabling omnidirectional angle adjustment in space.

[0048] The base 503 has bolt holes 506, through which bolts are passed to allow the universal ball damping hinge 5 to be mounted on the load ring 4 or clamp 7.

[0049] In other embodiments, a spherical groove is provided at the first end of the connecting post 502, and a damping ball 501 is disposed in the spherical groove at the first end of the connecting post 502.

[0050] The damping ball 501 is embedded in the spherical groove of the connecting column 502, forming a spherical joint structure. This allows the damping ball 501 to rotate freely within the spherical groove, enabling multi-directional movement, including pitch, yaw, and roll, providing omnidirectional adjustment capabilities in three-dimensional space. The mating design of the damping ball 501 and the spherical groove typically possesses damping characteristics, allowing it to stop and remain fixed at any position without the need for additional locking devices.

[0051] In other embodiments, the damping ball 501 has a threaded hole 505, and the first and second ends of the connecting rod 6 are both machined with external threads. The connecting rod 6 is screwed into the threaded hole 505 of the damping ball 501 through the external threads.

[0052] Because the damping ball 501 can rotate in multiple directions, the connecting rod 6 is threadedly connected to the damping ball 501. This allows the connecting rod 6 to be adjusted in all directions within three-dimensional space. Simultaneously, the threaded connection allows for fine-tuning of the connecting rod 6's position by rotating it, achieving precise positioning. Furthermore, the threaded connection enables the connecting rod 6 to be quickly installed or removed, facilitating replacement or maintenance and improving equipment maintenance efficiency.

[0053] The more specific usage process is as follows:

[0054] In use, adjust the torque adjusting nuts 505 of each universal ball joint damping hinge 5 to the appropriate damping state as needed. Place the clamp 7 on the appropriate position on the pipe wall of the workpiece 11 according to the location of the weld 12 to be inspected. Turn on the magnetic switch 10 to make the clamp 7 grip the pipe wall of the workpiece 11. Twist the metallographic imaging device 1 to drive the connecting rod 6 to make a coordinated deformation movement, so that the objective lens 13 extends vertically towards the vicinity of the weld 12 to be photographed. Rotate the metallographic imaging device 1 to move the objective lens 13 up and down for coarse adjustment. Then adjust the metallographic fine adjustment knob 2 until the metallographic structure is clearly visible in the field of view before taking the picture. This device adjusts the position of the metallographic imaging device according to the metallographic position of the heated surface on site, making it highly adaptable to the field. Compared with traditional magnetic base metallographic imaging devices, it is more suitable for metallographic inspection of non-magnetic materials such as austenitic stainless steel.

[0055] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0056] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A metallurgical testing device for high temperature heating surface of a boiler, characterized in that, include: A clamping device, comprising a connecting part, a clamping part and a connecting rod (6), wherein the connecting rod (6) is arranged on both sides of the connecting part, and one end of the connecting rod is connected to the connecting part and the other end is connected to the clamping part, wherein the clamping part is used to clamp and fix the workpiece to be tested (11); Metallographic imaging device (1) is mounted on the connecting part and moves relative to the connecting part to adjust the distance between the metallographic imaging device (1) and the workpiece to be inspected (11).

2. A device for metallographic examination of high-temperature heating surfaces of boilers according to claim 1, characterized in that The clamping part includes a clamp (7) and an adjustable strong magnetic adsorption pair (9). The clamp (7) is clamped on the test piece (11). The end face of the clamp (7) is provided with an adjustable strong magnetic adsorption pair (9). The adjustable strong magnetic adsorption pair (9) is used to hold the test piece (11) tightly.

3. The device for metallographic examination of high-temperature heating surfaces of boilers according to claim 2, characterized in that The clamp (7) includes two semi-circular retaining rings (701), which are connected by a hinge shaft (8). When the two retaining rings (701) are engaged, they form a clamping space for holding the test piece (11). Two adjustable strong magnetic adsorption pairs (9) are arranged opposite to each other on both sides of the clamping space.

4. The device for metallographic examination of high-temperature heating surfaces of boilers according to claim 3, characterized in that The clamp (7) also includes an anti-slip pad, which is disposed on the inner wall of the retaining ring (701).

5. The metallurgical examination device for high temperature heating surface of a boiler according to claim 1, characterized in that, The connecting part is a lens carrier ring (4), the inner surface of the lens carrier ring (4) is provided with an internal thread, and the metallographic imaging device (1) is machined with an external thread. The external thread and the internal thread cooperate to make the metallographic imaging device (1) threadedly connected to the lens carrier ring (4).

6. A device for metallographic examination of high-temperature heating surfaces of boilers according to claim 1, characterized in that The part to be tested (11) includes a weld (12); when the clamping device clamps the part to be tested (11), the two clamping parts are located on both sides of the weld (12) of the part to be tested (11), and the clamping parts, the connecting parts, the connecting rod (6) and the part to be tested (11) together form a triangular structure.

7. The metallurgical examination device for high-temperature heating surface of a boiler according to any one of claims 1 to 6, characterized in that, The clamping device further includes a universal ball joint damping hinge (5), and the universal ball joint damping hinge (5) is provided between the connecting rod (6) and the connecting part and between the connecting rod (6) and the clamping part.

8. A device for metallographic examination of high-temperature heating surfaces of boilers according to claim 7, characterized in that The universal ball joint damping hinge (5) includes a connecting post (502) and a base (503). The connecting post (502) includes a first end and a second end. The first end of the connecting post (502) is provided with a damping ball (501). The second end of the connecting post (502) is connected to the base (503) through a torque adjusting nut (507). The universal ball joint damping hinge (5) is connected to the connecting part or the clamping part through the base (503). At the same time, the universal ball joint damping hinge (5) is connected to the connecting rod (6) through the damping ball (501).

9. A device for metallographic examination of high-temperature heating surfaces of boilers according to claim 8, characterized in that The first end of the connecting post (502) is provided with a spherical groove, and the damping ball (501) is disposed in the spherical groove at the first end of the connecting post (502).

10. A device for metallographic examination of high-temperature heating surfaces of boilers according to claim 8, characterized in that A threaded hole (505) is formed on the damping ball (501), and the first end and the second end of the connecting rod (6) are both machined with external threads, and the connecting rod (6) is screwed in the threaded hole (505) of the damping ball (501) through the external threads.

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