CN220872341U - Auxiliary device for metallographic examination - Google Patents

Abstract

The present disclosure relates to an auxiliary device for metallographic examination, comprising: the two support plates are arranged at intervals along the first direction, are used for supporting the metallographic tester along a second direction perpendicular to the first direction, and are configured to be in magnetic attraction fit with the metallographic tester; the push rod extends along the first direction in the axial direction, and at least two push rods movably set up in the backup pad in one-to-one correspondence, and the push rod has: a first end for extending into the space between the two support plates configured to have a pushing force applied to the sample tube in a first direction; and the second end is used for extending out of the supporting plate in a direction away from the first end and is formed into an operation end. The metallographic tester can be relatively fixed with the sample tube so that the metallographic tester can detect the sample tube, the problem that the metallographic tester cannot shoot pictures or the shot pictures are unclear is effectively avoided, and the function that the metallographic tester can detect the microstructure shape of the wall of the sample tube in real time is realized.

Description

Auxiliary device for metallographic examination

Technical Field

The disclosure relates to the technical field of large thermal power generating units, and in particular relates to an auxiliary device for metallographic examination.

Background

The on-site metallographic examination is an indispensable work in the boiler, pipeline maintenance and metal supervision work in the power industry. Technicians can observe the microstructure of the metal parts in real time through on-site metallographic examination to evaluate the service lives of the boiler and the pipeline.

The steam pressure and temperature parameters in the thermal power generating unit are improved, the requirements on the grade of the used pipe are also higher and higher, and austenitic stainless steel represented by TP347HFG is widely used in the supercritical generating unit of China or parts such as a superheater and a reheater on the supercritical generating unit.

Under the influence of current deep peak shaving, the TP347HFG steel pipe has the condition of pipe explosion caused by long-term overtemperature, pipe internal blockage and other reasons. However, the tubes such as the high-temperature superheater and the high-temperature reheater in the power station boiler are made of austenitic stainless steel and are made of nonmagnetic materials, and the on-site metallographic instruments adopted in the metallographic examination are magnetic bases, so that the metallographic examination instruments are difficult to fixedly mount, and if the on-site metallographic instruments cannot be fixed, photographs cannot be taken, or the photographed photographs are unclear, and the microstructure morphology of the tube wall of a sample cannot be real-time.

Disclosure of utility model

It is an object of the present disclosure to provide an auxiliary device for metallographic examination, which can at least partially solve the technical problems existing in the related art.

To achieve the above object, the present disclosure provides an auxiliary device for metallographic examination, comprising:

The two support plates are arranged at intervals along a first direction, are used for supporting the metallographic tester along a second direction perpendicular to the first direction, and are configured to be in magnetic attraction fit with the metallographic tester;

the push rods axially extend along the first direction, at least two push rods are movably arranged on the supporting plate in a one-to-one correspondence manner, and the push rods are provided with:

A first end for extending into the space between the two support plates and configured to have a pushing force applied to the sample tube in the first direction;

and the second end is used for extending out of the supporting plate towards the direction away from the first end and is formed into an operation end.

Optionally, the device further comprises a bearing plate, wherein the bearing plate is arranged on the top surfaces of the two supporting plates along the second direction, is used for bearing the metallographic tester, and is configured to be in magnetic attraction fit with the metallographic tester.

Optionally, the sample tube further comprises an elastic member elastically connected between the first end and the support plate in the first direction and capable of generating an elastic force such that the first end has a force pushing in a direction of applying the sample tube in the first direction.

Optionally, the elastic element is a compression spring, and the compression spring is sleeved on the periphery of the push rod.

Optionally, the device further comprises a collar, wherein the two collars are sleeved on the periphery of the sample tube and are respectively fixed at two ends of the compression spring, the collar close to the first end is clamped at the first end, and the collar close to the supporting plate is clamped on the supporting plate.

Optionally, the device further comprises a pushing block arranged on the first end and used for abutting against the sample tube, and the cross-sectional area of one side, close to the sample tube, of the pushing block is larger than that of the first end.

Optionally, a pusher substrate for contacting with the sample tube is disposed on the pusher, and the pusher substrate is configured into an arc structure recessed toward a direction away from the sample tube, and an inner contour configuration of the arc structure is matched with an outer contour configuration of the sample tube.

Optionally, the pusher and the pusher substrate are configured as an integrally molded structure.

Optionally, further comprising a pull rod assembly, the pull rod assembly comprising:

the pull rod is coaxially connected with one end, far away from the first end, of the second end;

And the handle is vertically connected with one end of the pull rod, which is far away from the second end.

Optionally, at least two push rods are arranged along the second direction, and the handles on the two push rods are integrally formed.

Through above-mentioned technical scheme, along the radial opposite both sides of centre gripping at the sample pipe along the centre gripping along first direction through the first end of two push rods, with auxiliary device installs on the sample pipe, and inhale the cooperation with metallographic inspection appearance magnetism, thereby make the metallographic inspection appearance can keep relative fixed with the sample pipe, so that the metallographic inspection appearance detects the sample pipe, the unable photograph of taking of metallographic inspection appearance has been avoided effectively, or the indistinct problem of photograph, the function that the metallographic inspection appearance can real-time detection sample pipe wall microstructure shape has been realized, thereby the work demand of metallographic inspection appearance can be satisfied.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:

FIG. 1 is a reference view of a use state of an auxiliary tool for metallographic examination provided in an exemplary embodiment of the present disclosure when holding a sample tube;

FIG. 2 is a bottom view of an accessory tool for metallographic examination provided by an exemplary embodiment of the present disclosure;

fig. 3 is a side view of an accessory tool for metallographic examination provided in an exemplary embodiment of the present disclosure.

Description of the reference numerals

10-Supporting plates; 20-pushing rod; 21-a first end; 22-a second end; 30-supporting plate; 40-elastic member; 50-clamping ring; 61-pushing blocks; 62-pushing the block substrate; 70-a tie rod assembly; 71-a pull rod; 72-handle; 80-sample tube.

Detailed Description

Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.

In the present disclosure, unless otherwise indicated, terms of orientation such as "inner" and "outer" are used with respect to the outline of the corresponding component itself; the use of orientation words such as "top" and "bottom" is defined based on the usage habit of the auxiliary device provided by the present disclosure, and in particular, reference may be made to the orientation of the drawing plane shown in fig. 1. The terms such as "first," "second," and the like, as used in this disclosure, are used for distinguishing one element from another and not necessarily for order or importance. Furthermore, the following description, when taken in conjunction with the accompanying drawings, like reference numerals designate the same or similar elements in different drawings.

Referring to fig. 1-3, the present disclosure provides an auxiliary device for metallographic examination. The auxiliary device may include a support plate 10 and a push rod 20. The backup pad 10 can set up two along first direction interval for along the second direction bearing metallographic inspection appearance of perpendicular to first direction, and backup pad 10 can be configured to be able to inhale the cooperation with the metallographic inspection appearance magnetism, and the metallographic inspection appearance can be the magnetism and inhale the base, and backup pad 10 can be made by strong magnet or have magnetic metal, in order to guarantee the magnetism of backup pad 10 and the base of metallographic inspection appearance and inhale intensity, ensure the connection strength of metallographic inspection appearance and auxiliary device. The pushrod 20 may include a first end 21 and a second end 22. In the present disclosure, the first direction described below may be a radial direction of the sample tube 80, and the second direction may be an axial direction of the sample tube 80. The axial direction of the push rods 20 may extend along the first direction, and at least two push rods 20 are movably disposed on the support plates 10 in a one-to-one correspondence, that is, at least one push rod 20 is movably disposed on each of the two support plates 10. The first ends 21 may be adapted to extend into the space between the two support plates 10 and the first ends 21 may be configured to have a pushing force applied to the sample tube 80 in a first direction such that one push rod 20 is provided at each of diametrically opposite sides of the sample tube 80 to clamp the sample tube 80 through the two first ends 21. The second end 22 may be adapted to protrude from the support plate 10 in a direction away from the first end 21, and the second end 22 may be formed as an operation end, thereby facilitating the operation of a worker.

Through above-mentioned technical scheme, along the radial opposite both sides of centre gripping at sample pipe 80 along first direction 11 through the first end 21 of two push rods 20, with auxiliary device installs on sample pipe 80, and inhale the cooperation with the metallography inspection appearance magnetism, thereby make the metallography inspection appearance can keep relative fixation with sample pipe 80, so that the metallography inspection appearance detects sample pipe 80, the unable photograph of metallography inspection appearance of having avoided effectively, or the indistinct problem of photograph, realized the metallography inspection appearance can real-time detection sample pipe 80 the microstructure shape of pipe wall's function, thereby can satisfy the work demand of metallography inspection appearance.

Referring to fig. 1 to 3, the auxiliary device may further include a support plate 30, the support plate 30 may be disposed on top surfaces of the two support plates 10 in the second direction, the support plate 30 may be used to support the metallographic inspection instrument, and the support plate 30 may be configured to be magnetically engaged with the metallographic inspection instrument to increase a magnetically engaging area of the auxiliary device and the metallographic inspection instrument, thereby ensuring convenience in installation of the metallographic inspection instrument and reliability in a position of the metallographic inspection instrument, and largely avoiding the problem that a photographed picture is not clear due to displacement of the metallographic inspection instrument during the metallographic inspection. In the embodiment provided by the present disclosure, the bottom surface of the support plate 30 and the top surface of the support plate 10 may be magnetically engaged, thereby ensuring the reliability and convenience of the connection between the support plate 30 and the support plate 10.

Referring to fig. 1 and 2, the auxiliary device may further include an elastic member 40, and the elastic member 40 may be elastically coupled between the first end 21 and the support plate 10 in the first direction and may generate an elastic force that causes the first end 21 to have a direction of applying the sample tube 80 to the first direction, thereby effectively improving the pushing force of the push rod to the sample tube 80 on the one hand, and automatically adapting the auxiliary device to clamp the sample tubes 80 of different sizes on the other hand, and improving the installation efficiency of the auxiliary device.

According to some embodiments provided by the present disclosure, the elastic member 40 may be a compression spring, which can reduce cost and have lighter weight while ensuring elastic thrust, and accords with the light-weight design principle. The compression spring may be sleeved on the outer periphery of the push rod 20 to ensure stability of the installation position of the compression spring, and avoid the compression spring from being separated from the push rod 20, so that the elastic force of the compression spring is always along the first direction, and avoid the deviation when the elastic pushing force is applied to the first end 21.

Referring to fig. 1 and 2, the auxiliary device may further include a collar 50, and two collars 50 may be fitted around the outer circumference of the sample tube 80 to ensure that the collar 50 can maintain the overall effect of the sample tube 80 and the stability of the installation position of the collar 50. Also, two collars 50 may be fixed to both ends of the compression spring, respectively, to facilitate installation of the compression spring. The collar 50 proximate the first end 21 may be snapped onto the first end 21 to enable a removable connection of the collar 50 to the push rod 20 while one end of the compression spring remains relatively fixed to the first end 21; the collar 50 close to the support plate 10 is clamped on the support plate 10, so that when the push rod 20 is pulled in the direction away from the sample tube 80, the compression spring is compressed, and accordingly restoring force and pushing force for driving the first end 21 to move in the direction close to the sample tube 80 are generated, and the connection efficiency of the auxiliary tool and the sample tube 80 is improved.

Referring to fig. 1 and 2, the auxiliary device may further include a push block 61, and the push block 61 may be disposed on the first end 21 for abutting against the sample tube 80. And the cross-sectional area of the pushing block 61 near the side of the sample tube 80 is larger than that of the first end 21, so that the contact area between the first end 21 and the sample tube 80 is increased, and the problem of stress concentration is effectively avoided and the service life of the sample tube 80 is prolonged on the premise of ensuring the thrust of the push rod 20.

Referring to fig. 1 and 2, the pusher substrate 62 for contacting the sample tube 80 is provided on the pusher 61, and the pusher substrate 62 may be configured as an arc-shaped structure recessed toward a direction away from the sample tube 80, and an inner profile configuration of the arc-shaped structure may be matched with an outer profile configuration of the sample tube 80, i.e., an inner diameter of the arc-shaped structure is matched with an outer diameter dimension of the sample tube 80, so as to further increase a contact area of the auxiliary device with the sample tube 80, thereby ensuring stability of the sample tube 80 when the auxiliary device clamps the sample tube 80. In the embodiment provided by the present disclosure, for example, when the auxiliary device includes only two pushing blocks 61 disposed along the first direction, the two arc-shaped structures may be respectively configured as 1/2 circular arc-shaped structures, and the two arc-shaped structures may jointly enclose a circular structure having an inner diameter matched with the outer diameter configuration of the sample tube 80. Or for example, when two pushing blocks 61 are respectively arranged along the first direction and the second direction of the auxiliary device, that is, four pushing blocks 61 are arranged, the four arc-shaped structures can be respectively constructed as 1/4 circular arc-shaped structures, and the four arc-shaped structures can jointly enclose a circular structure with the inner diameter matched with the outer diameter structure of the sample tube 80. Thus, the connection strength between the auxiliary device and the sample tube 80 can be effectively improved, the stability of the metallographic tester when the sample tube 80 is observed can be ensured, and the problem of displacement of the sample tube 80 in the metallographic testing process can be avoided. It should be noted that, in the embodiment provided in the present disclosure, when the sample tube 80 is fixed, the metallographic detection area of the sample tube 80 is leaked out and the side surfaces of the detection area and the side surfaces of the pusher 61 and the pusher substrate 62 are kept on the same straight line, then the metallographic inspection instrument is placed on the above-mentioned support plate 30, and then coarse adjustment and fine adjustment are started, so that observation of the metallographic structure is completed.

Referring to fig. 1 and 2, according to some embodiments provided by the present disclosure, the pusher 61 and the pusher substrate 62 may be constructed as an integrally formed structure, thereby ensuring the reliability of the clamping of the sample tube 80 by the two pushers 20 in the first direction of the sample tube 80. The pushing block 61 and the pushing block substrate 62 may be made of flexible materials, so that the pushing block 61 and the pushing block substrate 62 are prevented from wearing the sample tube 80, the service life of the sample tube 80 is ensured, and the safety of the auxiliary device in the use process is improved.

Referring to fig. 1-3, the auxiliary device may further include a pull rod assembly 70, and the pull rod assembly 70 may include a pull rod 71 and a handle 72. The pull rod 71 may be coaxially connected to an end of the second end 22 remote from the first end 21, and in the embodiment provided in the present disclosure, the pull rod 71 and the push rod 20 may be configured as an integral molding, so that the connection strength between the pull rod 71 and the push rod 20 may be ensured, the stability of the pull rod 71 when the push rod 20 is pulled in a direction remote from the sample tube 80 is ensured, and the push rod 20 is prevented from being separated from the pull rod 71. The handle 72 may be vertically connected to an end of the pull rod 71 remote from the second end 22 such that the pull rod 71 and the handle 72 may be configured in a T-shaped structure for the convenience of the operator. According to an embodiment provided by the present disclosure, an anti-slip layer may be provided on the outer circumferential surface of the handle 72 to increase the surface friction of the handle 72, thereby playing an anti-slip role when a worker pulls the handle 72.

Referring to fig. 1 to 3, at least two push rods 20 may be provided at intervals along the second direction, so that the auxiliary device is provided with at least 4 push rods 20 on one side of the sample tube 80 along the first direction, further improving the connection strength between the auxiliary device and the sample tube 80. The handles 72 on the two pull rods 71 in the second direction may be integrally formed, so that a worker can simultaneously pull the two pull rods 71 arranged at intervals along the second direction, thereby simultaneously driving the two push rods 20 arranged at intervals along the second direction, and improving the assembly efficiency of the auxiliary device and the sample tube 80.

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the embodiments described above, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.

In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.

Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.

Claims (10)

1. An auxiliary device for metallographic examination, comprising:

The two support plates are arranged at intervals along a first direction, are used for supporting the metallographic tester along a second direction perpendicular to the first direction, and are configured to be in magnetic attraction fit with the metallographic tester;

the push rods axially extend along the first direction, at least two push rods are movably arranged on the supporting plate in a one-to-one correspondence manner, and the push rods are provided with:

A first end for extending into the space between the two support plates and configured to have a pushing force applied to the sample tube in the first direction;

and the second end is used for extending out of the supporting plate towards the direction away from the first end and is formed into an operation end.

2. An aid for metallographic examination according to claim 1, further comprising a support plate disposed on top of both of the support plates in the second direction, the support plate being adapted to support the metallographic examination instrument and configured to magnetically engage the metallographic examination instrument.

3. The auxiliary device for metallographic examination according to claim 1, further comprising an elastic member elastically connected between the first end and the support plate in the first direction and capable of generating an elastic force such that the first end has a force of pushing in a direction of applying the sample tube in the first direction.

4. An auxiliary device for metallographic examination according to claim 3, wherein the elastic member is a compression spring which is fitted around the outer periphery of the push rod.

5. The auxiliary device for metallographic examination according to claim 4, further comprising a collar, wherein two of the collars are fitted around the outer periphery of the sample tube and fixed to both ends of the compression spring, respectively, the collar near the first end is engaged with the first end, and the collar near the support plate is engaged with the support plate.

6. The auxiliary device for metallographic examination according to claim 1, further comprising a pusher block disposed on the first end for abutting against the sample tube, wherein a cross-sectional area of a side of the pusher block adjacent to the sample tube is larger than a cross-sectional area of the first end.

7. The auxiliary device for metallographic examination according to claim 6, wherein a pusher substrate for contacting with the sample tube is provided on the pusher, the pusher substrate being configured as an arc-shaped structure recessed in a direction away from the sample tube, an inner contour configuration of the arc-shaped structure matching an outer contour configuration of the sample tube.

8. The auxiliary device for metallographic examination according to claim 7, wherein the pusher and the pusher substrate are constructed as an integrally molded structure.

9. The auxiliary device for metallographic examination according to claim 1, further comprising a drawbar assembly comprising:

the pull rod is coaxially connected with one end, far away from the first end, of the second end;

And the handle is vertically connected with one end of the pull rod, which is far away from the second end.

10. The auxiliary device for metallographic examination according to claim 9, wherein at least two push rods are provided along the second direction, and the handles on the two push rods are integrally formed.