A stress and electromagnetic combined corrosion test device and its hanging device

Abstract

The present invention discloses a stress and electromagnetic combined corrosion test device and a wire hanging device thereof. The stress and electromagnetic combined corrosion wire hanging device comprises a stress applying device for applying a constant load to a sample to be tested and a sample connection seat for fixedly and insulatedly connecting a current-carrying wire; the stress applying device is fixedly mounted on the sample connection seat and is separated from the current-carrying wire. The stress and electromagnetic combined corrosion wire hanging device realizes the connection of the sample to be tested to the current-carrying wire through the sample connection seat and the stress applying device fixedly connected to the sample connection seat. The stress and electromagnetic combined corrosion wire hanging device will not interfere with the normal working state of the current-carrying wire, nor will it cause structural damage to the current-carrying wire. It can provide a constant stress, constant displacement and constant electromagnetic field experimental environment for the sample to be tested, so as to comprehensively analyze and study the combined corrosion effect of stress and electromagnetic field.

Description

Technical Field

[0001] The invention relates to the field of materials, and in particular to a stress and electromagnetic combined corrosion wire hanging device, and also to a stress and electromagnetic combined corrosion test device, comprising the stress and electromagnetic combined corrosion wire hanging device. Background Art

[0002] During use, parts or components made of metal or alloy materials may fail due to the combined effects of static stress and corrosion, and some metal or alloy parts used in high-voltage lines are also subject to electromagnetic effects.

[0003] At present, most of the devices for analyzing and studying the failure phenomena of parts and components made of metal or alloy materials only analyze stress and corrosion effects, without comprehensively considering electromagnetic effects. Therefore, the research results are often inconsistent with the actual environment of metal or alloy parts in high-voltage lines, and thus cannot provide real, reliable and effective data support for the failure phenomena of metal or alloy parts in electromagnetic environments such as high-voltage lines. Summary of the invention

[0004] The purpose of the present invention is to provide a stress and electromagnetic combined corrosion hanging wire device, which can provide the combined effects of constant stress, constant displacement and electromagnetic field to the sample to be tested, so that the sample to be tested can provide real, reliable and effective test data. Another purpose of the present invention is to provide a stress and electromagnetic combined corrosion test device, including the above-mentioned stress and electromagnetic combined corrosion hanging wire device.

[0005] To achieve the above object, the present invention provides a stress and electromagnetic combined corrosion wire hanging device, comprising:

[0006] A stress applying device for applying a constant load to the sample to be tested;

[0007] A sample connection seat is used to fix and insulate the current-carrying wire; the stress applying device is fixedly installed on the sample connection seat and is separated from the current-carrying wire.

[0008] Preferably, the sample connection seat is connected with a first damping rubber for surrounding the current-carrying wire to achieve an insulating connection.

[0009] Preferably, the sample connection seat comprises a rigid sample connection strip and at least two rigid wire connection portions;

[0010] The rigid sample connecting strip and the energized wire are separated from each other;

[0011] One end of any rigid connection portion is fixedly connected to the rigid sample connection strip, and the other end is used to be fixedly connected to a current-carrying wire.

[0012] Preferably, the rigid specimen connecting strip is parallel to the current-carrying wire;

[0013] The rigid sample connecting strip is provided with a plurality of mounting holes for fixing and mounting the stress applying device at intervals.

[0014] Preferably, the number of the rigid wire connecting parts is two, and the two rigid wire connecting parts are respectively fixedly connected to the two ends of the rigid sample connecting strip.

[0015] Preferably, the rigid wire connecting portion comprises a first clamp and a second clamp;

[0016] The first damping plate on the inner wall of the first clamp and the second damping plate on the inner wall of the second clamp wrap the current-carrying wire when the two sides of the current-carrying wire are buckled toward each other.

[0017] Preferably, a second damping rubber is further provided between the contact surface between any of the rigid wire connecting portions and the rigid sample connecting strip.

[0018] Preferably, the rigid wire connection portion is provided with a mounting hole; the rigid sample connection strip is connected with a mounting pin for inserting into the mounting hole;

[0019] The second damping rubber includes a damping rubber strip spaced between any side wall of the mounting pin and the mounting hole.

[0020] Preferably, the stress applying device comprises a screw rod; the sample connection seat is provided with a threaded hole for the screw rod to penetrate; the screw rod penetrated into the threaded hole is fixedly connected to the sample connection seat by a locking nut.

[0021] The present invention provides a stress and electromagnetic combined corrosion test device, which comprises a current-carrying conductor and the stress and electromagnetic combined corrosion hanging wire device as described above.

[0022] Compared with the above background technology, the stress and electromagnetic combined corrosion hanging device provided by the present invention includes a sample connecting seat and a stress applying device.

[0023] The sample connection seat is used to fix the connection with the energized wire and is insulated from the energized wire. The stress applying device is fixedly installed on the sample connection seat and is separated from the energized wire. It can be seen that the sample to be tested is relatively fixed to the energized wire, and the sample to be tested is affected by the electromagnetic field generated by the energized wire. At the same time, the stress applying device applies a constant load to the sample to be tested to generate a constant force. Therefore, the stress and electromagnetic combined corrosion hanging wire device provided by the present invention can provide a constant stress, constant displacement and constant electromagnetic field experimental environment to the sample to be tested, so as to comprehensively analyze and study the combined corrosion effect of stress and electromagnetic field. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the structure of a stress and electromagnetic combined corrosion wire hanging device provided in an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of assembling the rigid wire connecting portion and the mounting pin provided in an embodiment of the present invention.

[0027] Among them, 01-sample to be tested, 02-powered wire, 2-screw, 3-sample connecting seat, 31-rigid sample connecting strip, 32-rigid wire connecting part, 321-first chuck, 3211-first damping plate, 322-second chuck, 3221-second damping plate, 33-chuck adjustment hole, 34-chuck locking hole, 4-mounting pin, 41-rigid connecting strip mounting hole, 5-damping rubber strip, 6-locking nut. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] Please refer to Figure 1 and Figure 2 , Figure 1 A schematic diagram of the structure of a stress and electromagnetic combined corrosion wire hanging device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of assembling the rigid wire connecting portion and the mounting pin provided in an embodiment of the present invention.

[0031] The present invention provides a stress and electromagnetic combined corrosion hanging device, comprising a sample connection seat 3 for insulation and fixedly connected to a current-carrying wire 02 and a stress applying device fixedly connected to the sample connection seat 3. The stress applying device is used to install and apply a constant load to the sample to be tested 01 to generate a constant stress; the stress applying device installed on the sample connection seat 3 and the current-carrying wire 02 do not contact each other and are relatively separated.

[0032] The sample connection seat 3 is fixedly connected to the energized wire 02, and the two remain relatively fixed, and the stress applying device with the test sample 01 installed is fixed to the sample connection seat 3, so the aforementioned test sample 01 and the energized wire 02 remain relatively fixed, which is a constant displacement. The voltage at both ends of the energized wire 02 is relatively stable, so the electromagnetic field generated by the energized wire 02 is relatively stable, and the test sample 01 that remains relatively fixed to the energized wire 02 is subjected to a constant electromagnetic field, which is a constant electromagnetic field.

[0033] The sample connection seat 3 can be sleeved or clamped on the outer periphery of the current-carrying wire 02, and the contact surfaces of the sample connection seat 3 and the current-carrying wire 02 are pressed against each other, so that the two are relatively fixed by interference fit.

[0034] The sample connection seat 3 is insulated and connected to the current conducting wire 02. The sample connection seat 3 may be partially or entirely made of non-conductive material. In other words, the sample connection seat 3 may be set as a non-conductive sample connection seat 3, or the sample connection seat 3 may be provided with a non-conductive connection end for fixedly connecting the current conducting wire 02, so that the sample connection seat 3 is insulated and fixed to the current conducting wire 02. In addition, an insulating part may be provided between the sample connection seat 3 and the current conducting wire 02.

[0035] The stress applying device is used to install and apply constant stress, i.e., constant stress, to the sample to be tested 01. The stress applying device can apply one or more of constant tensile stress, compressive stress, shear stress, or torsional stress to the sample to be tested 01. Taking the C-type ring specimen as an example, the stress applying device may include bolts for passing through both ends of the C-type ring specimen, and nuts for locking the ends of the C-type ring specimen are provided on both sides of any end of the C-type ring specimen. The aforementioned bolts and nuts apply constant pressure to the C-type ring specimen, so that the C-type ring specimen maintains a fixed amount of deformation, and therefore, the C-type ring specimen is subjected to constant stress. As for other types of stress applying devices, reference may be made to the relevant settings in the prior art, which are not listed one by one here.

[0036] According to the specific structure of the stress applying device, different types of stress applying devices can be fixed to the sample connection seat 3 in different connection modes. For example, the bolts connecting the C-ring sample can be detachably installed on the sample connection seat 3 through fasteners.

[0037] In summary, the stress and electromagnetic combined corrosion hanging device provided by the present invention realizes the connection of the test sample 01 to the energized conductor 02 through the sample connecting seat 3 and the stress applying device fixedly connected to the sample connecting seat 3. The stress and electromagnetic combined corrosion hanging device will not interfere with the normal working state of the energized conductor 02, nor will it cause structural damage to the energized conductor 02, and can provide a combined electromagnetic and stress action environment for the test sample 01.

[0038] The stress and electromagnetic combined corrosion wire hanging device provided by the present invention is further described below in conjunction with the accompanying drawings and implementation modes.

[0039] On the basis of the above-mentioned embodiment, in the embodiment provided by the present invention, the sample connection seat 3 is provided with a first damping rubber for surrounding the current-carrying wire 02. The outer periphery of the first damping rubber is in contact with the inner wall of the sample connection seat 3, and the inner wall of the first damping rubber is in contact with and clamps the outer periphery of the current-carrying wire 02. Since the first damping rubber has both insulating properties and good elasticity and plasticity, the first damping rubber firstly plays the role of insulating the sample connection seat 3 from the current-carrying wire 02, secondly can improve the fixed connection effect between the sample connection seat 3 and the current-carrying wire 02, and thirdly can play the role of buffering and absorbing vibration energy, thereby reducing the position change and stress deformation of the sample to be tested 01 caused by the external environment.

[0040] The sample connection seat 3 provided by the present invention may include a rigid sample connection strip 31 and at least two rigid wire connection parts 32 .

[0041] The rigid sample connection bar 31 and the current conducting wire 02 are separated from each other and are used to fix and connect the stress applying device. The relative position relationship between the rigid sample connection bar 31 and the current conducting wire 02 includes but is not limited to being parallel.

[0042] The rigid sample connecting bar 31 can be equipped with multiple stress applying devices. In order to meet the principle of test repetition, in each embodiment provided by the present invention, the rigid sample connecting bar 31 is parallel to the energized wire 02, thereby providing the same magnetic field environment to multiple samples 01 to be tested fixed to the rigid sample connecting bar 31.

[0043] One end of the rigid wire connection part 32 is fixedly connected to the rigid sample connection strip 31, and the other end is used to be fixedly connected to the current-carrying wire 02. The number of rigid wire connection parts 32 is set to two or more, and all rigid wire connection parts 32 are connected at different positions along the length direction of the rigid sample connection strip 31, thereby improving the relative stability between the rigid sample connection strip 31 and the current-carrying wire 02. For example, all rigid wire connection parts 32 are respectively connected to the two ends and the middle of the rigid sample connection strip 31.

[0044] The rigid sample connection bar 31 and the rigid wire connection part 32 can be made of the same material or different materials. Regardless of the specific material used, the rigid sample connection bar 31 and the rigid wire connection part 32 have good resistance to deformation due to their rigidity, and are therefore suitable for occasions where the energized wire 02 is a high-voltage line. In addition, for the rigid sample connection bar 31, the whip effect caused by the series structure of multiple samples 01 to be tested can be reduced.

[0045] Furthermore, the rigid sample connecting strip 31 is provided with a plurality of mounting holes for fixing and mounting the stress applying device at intervals. The stress applying device is detachably connected to the aforementioned mounting holes by fasteners such as bolts and nuts.

[0046] The rigid sample connecting bar 31 is parallel to the current-carrying wire 02 . The multiple test samples 01 fixed to the rigid sample connecting bar 31 through the aforementioned multiple mounting holes are at the same distance from the current-carrying wire 02 , and thus are subjected to the same magnetic field under the magnetic field generated by the current-carrying wire 02 .

[0047] In order to simplify the installation and use of the stress and electromagnetic combined corrosion hanging device, on the basis of the above embodiment, the rigid sample connecting bar 31 is fixedly connected to the power-carrying wire 02 through two rigid wire connecting parts 32, and the above two rigid wire connecting parts 32 are respectively fixedly connected to the two ends of the rigid sample connecting bar 31. Since the power-carrying wire 02 and the rigid sample connecting bar 31 are parallel in this embodiment, the rigid sample connecting bar 31 can be vertically fixed between the power-carrying wire 02 and the rigid sample connecting bar 31.

[0048] The rigid sample connecting bar 31 used in the present invention is specifically an aluminum bar. The size of the aluminum bar can be set to 550mm×10mm×4mm. A mounting hole is reserved every 50mm along the length direction of the aluminum bar, and the diameter of the mounting hole can be set to 5mm. One aluminum bar is provided with 10 mounting holes for simultaneously mounting 10 samples 01 to be tested.

[0049] The rigid wire connecting portion 32 used in the present invention may include a first clamp 321 and a second clamp 322 ; the first clamp 321 and the second clamp 322 are relatively distributed and can be rotatably connected or slidably connected to achieve relative separation and relative proximity.

[0050] When the first clamp 321 and the second clamp 322 are relatively separated, the gap between the first clamp 321 and the second clamp 322 is enlarged, so that the current-carrying wire 02 can be easily removed from between the first clamp 321 and the second clamp 322. When the first clamp 321 and the second clamp 322 are relatively close to each other, the gap between the first clamp 321 and the second clamp 322 is enlarged, so that the first clamp 321 and the second clamp 322 can clamp the current-carrying wire 02. For example, the first clamp 321 and the second clamp 322 are rotatably connected, and the two form a scissors shape with a hinged middle part. When the tails of the second clamp 322 and the second clamp 322 are pinched, the heads of the first clamp 321 and the second clamp 322 are relatively separated, so that the current-carrying wire 02 is clamped into the first clamp 321 and the second clamp 322. The first clamp 321 and the second clamp 322 can also be hinged at the same side end to form a closed ring structure with an opening. The first clamp 321 and the second clamp 322 are flipped open from the open side of the aforementioned closed ring structure. After the powered wire 02 is inserted, the first clamp 321 and the second clamp 322 are rotated to close the open side of the aforementioned closed ring structure.

[0051] In this embodiment, the inner wall of the first clamp 321 is provided with a first damping sheet 3211, and the inner wall of the second clamp 322 is provided with a second damping sheet 3221. The first clamp 321 and the second clamp 322 can be opened and closed freely, and by closing the first clamp 321 and the second joint, the first damping sheet 3211 and the second damping sheet 3221 are buckled into a ring structure from both sides of the current-carrying wire 02 when the first clamp 321 and the second clamp 322 are relatively close, thereby wrapping the current-carrying wire 02.

[0052] It should be noted that the inner wall of the first clamp 321 and the inner wall of the second clamp 322 refer to the side walls of the first clamp 321 and the second clamp 322 which are adjacent to each other and face each other.

[0053] A clamp adjustment hole 33 and a clamp locking hole 34 are also provided in the middle of the rigid wire connecting portion 32. The clamp adjustment hole 33 is used to adjust the position of the first clamp 321 and the second clamp 322 during relative movement or relative rotation, thereby increasing or decreasing the gap between the first damping plate 3211 and the second damping plate 3221 when they are buckled according to the specific size of the current-carrying wire 02. A fixing bolt for locking the first clamp 321 and the second clamp 322 is connected in the clamp adjustment hole 33, and a latch is connected in the clamp locking hole 34 to further fix the first clamp 321 and the second clamp 322.

[0054] In addition to the buffer and vibration absorption structure between the current-carrying wire 02 and the sample connection seat 3, a buffer and vibration absorption structure can also be provided between the contact surface of any rigid wire connection part 32 and the rigid sample connection strip 31. In a specific embodiment, a second damping rubber is provided between the contact surface of the rigid wire connection part 32 and the rigid sample connection strip 31, and the second damping rubber is located between the contact surface of the rigid wire connection part 32 and the rigid sample connection strip 31.

[0055] The shape and size of the second damping rubber depends on the specific connection method and connection structure of the rigid wire connecting portion 32 and the rigid sample connecting strip 31. Figure 2 The rigid wire connection part 32 is provided with a mounting hole, and the rigid sample connection strip 31 is connected with a mounting pin 4 inserted into the mounting hole. The mounting pin 4 is inserted into the mounting hole, and the rigid wire connection part 32 and the rigid sample connection strip 31 are fixedly connected through the shaft hole. Among them, the mounting pin 4 is a cross-shaped structure, with four outwardly protruding support surfaces, and the mounting hole inserted into the mounting hole contacts the mounting hole only through the aforementioned four support surfaces. Based on this mechanism, the second damping rubber includes four damping rubber strips 5, and any one of the damping rubber strips 5 is inserted and interference-fitted between the inner wall of the mounting hole and the transition surface of the adjacent support surface.

[0056] The mounting pin 4 can be fixed by an L-shaped plate. The mounting pin 4 is vertically fixed to the end surface of the L-shaped steel plate, and the rigid sample connecting strip 31 is attached to the other end surface of the L-shaped steel plate and locked through the rigid connecting strip mounting hole 41 at the end of the L-shaped plate.

[0057] In order to facilitate the fixed connection between the stress applying device and the sample connection seat 3, the stress applying device includes a screw rod 2, and accordingly, the sample connection seat 3 is provided with a threaded hole for the screw rod 2 to penetrate. The screw rod 2 penetrated into the threaded hole is fixedly connected to the sample connection seat 3 through a locking nut 6. Taking the sample 01 to be tested as a C-type ring sample as an example, the screw rod 2 of the stress applying device is connected with at least two pairs of nuts and one locking nut 6, and the above two pairs of nuts are respectively used to lock the two ends of the C-type ring sample, and the locking nut 6 and the nut away from the C-type ring sample are close to each other and lock the sample connection seat 3.

[0058] The present invention also provides a stress and electromagnetic combined corrosion test device, comprising a powered conductor 02 and the stress and electromagnetic combined corrosion hanging wire device as described above.

[0059] The energized conductor 02 used in the present invention can be set as a high-voltage line in a high-voltage circuit, or the conductor can be connected to a circuit loop through a power supply device such as a power supply to form the energized conductor 02. In order to more accurately obtain the combined effects of stress and electromagnetic on the test sample 01, in the following embodiments provided by the present invention, the high-voltage line in the high-voltage circuit is preferably used as the energized conductor 02.

[0060] Multiple stress and electromagnetic combined corrosion hanging devices can be connected to the same energized wire 02. For example, 4 to 5 stress and electromagnetic combined corrosion hanging devices share the same energized wire 02. The sample connection seat 3 of any stress and electromagnetic combined corrosion hanging device is equipped with 10 C-type ring samples. All C-type ring samples connected to a stress and electromagnetic combined corrosion hanging device are taken out at regular intervals for research and analysis. Multiple samples 01 to be tested of the same stress and electromagnetic combined corrosion hanging device need to be kept in the hanging state for 40 to 60 days. During this period, the energized wire 02 is always kept energized.

[0061] The stress and electromagnetic combined corrosion test device and its wire hanging device provided by the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A stress and electromagnetic combined corrosion wire hanging device, characterized in that: include: A stress applying device for applying a constant load to the sample to be tested (01); A sample connection seat (3) for fixing and insulating a current-carrying wire (02); the stress applying device is fixedly mounted on the sample connection seat (3) and is separated from the current-carrying wire (02); The sample connection seat (3) comprises a rigid sample connection strip (31) and at least two rigid wire connection parts (32); The rigid sample connecting strip (31) and the current-carrying wire (02) are separated from each other; One end of any of the rigid wire connecting parts (32) is fixedly connected to the rigid sample connecting strip (31), and the other end is used to be fixedly connected to the current-carrying wire (02); A second damping rubber is also provided between the contact surface of any of the rigid wire connecting parts (32) and the rigid sample connecting strip (31); The rigid wire connection portion (32) is provided with a mounting hole; the rigid sample connection strip (31) is connected to a mounting pin (4) for inserting into the mounting hole; The second damping rubber comprises a damping rubber strip (5) arranged at intervals between any side wall of the mounting pin (4) and the mounting hole; The mounting pin (4) is in a cross-shaped structure and has four outwardly protruding support surfaces. When the mounting pin (4) is inserted into the mounting hole, the four support surfaces contact the mounting hole. There are four damping rubber strips (5), and any one of the damping rubber strips (5) is inserted into and interference-fitted between the inner wall of the mounting hole and the transition surface of an adjacent support surface.

2. The stress and electromagnetic combined corrosion hanging wire device according to claim 1 is characterized in that: The sample connection seat (3) is connected to a first damping rubber for surrounding the current-carrying wire (02) to achieve an insulating connection.

3. The stress and electromagnetic combined corrosion hanging wire device according to claim 1 is characterized in that: The rigid sample connecting strip (31) is parallel to the current-carrying wire (02); The rigid sample connecting strip (31) is provided with a plurality of mounting holes at intervals for fixing and mounting the stress applying device.

4. The stress and electromagnetic combined corrosion hanging wire device according to claim 3 is characterized in that: The number of the rigid wire connecting parts (32) is two, and the two rigid wire connecting parts (32) are respectively fixedly connected to two ends of the rigid sample connecting strip (31).

5. The stress and electromagnetic combined corrosion hanging wire device according to claim 1 is characterized in that: The rigid wire connecting portion (32) comprises a first clamp (321) and a second clamp (322); The first damping plate (3211) on the inner wall of the first clamp (321) and the second damping plate (3221) on the inner wall of the second clamp (322) wrap the current-carrying wire (02) when the two sides of the current-carrying wire (02) are buckled toward each other.

6. The stress and electromagnetic combined corrosion hanging wire device according to any one of claims 1 to 5, characterized in that: The stress applying device comprises a screw rod (2); the sample connection seat (3) is provided with a threaded hole for the screw rod (2) to pass through; the screw rod (2) passing through the threaded hole is fixedly connected to the sample connection seat (3) via a locking nut (6).

7. A stress and electromagnetic combined corrosion test device, characterized in that: It comprises an energized conductor (02) and the stress and electromagnetic combined corrosion hanging wire device as described in any one of claims 1 to 6.

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