A copper busbar conduction test device and a test method

Abstract

The present invention relates to the field of testing technologies, and specifically to a copper busbar conductivity testing device and a testing method, including: a rigid heat insulation plate, with thermal sensitive elements fixedly installed on both sides of the rigid heat insulation plate. The front half of the thermal sensitive element extends to the outside of the rigid heat insulation plate, and a detection plate is arranged on the outer side of the front surface of the T-shaped plate; there are two copper busbar bodies, which are respectively located on both sides of the rigid heat insulation plate; a flexible heat insulation pad is located between the front halves of the two thermal sensitive elements and is adhesively connected to the two thermal sensitive elements respectively; The beneficial effect is that by attaching thermal sensitive elements to both sides of the rigid heat insulation plate, one end of the thermal sensitive element extends to the outside of the rigid heat insulation plate, and a flexible heat insulation pad is adhesively arranged between one ends of the thermal sensitive elements. Due to the different deformation amounts of the two thermal sensitive elements, one end of the thermal sensitive element will bend to one side, thereby knowing the quality of the conductivity of the two copper busbar bodies.

Description

Technical Field

[0001] The present invention relates to the technical field of testing, and particularly to a copper bar conductivity testing device and a testing method. Background Art

[0002] An active power filter is a new type of power electronic device used for dynamically suppressing harmonics and compensating reactive power. It can overcome the disadvantages of traditional harmonic suppression and reactive power compensation methods such as LC filters, achieve dynamic tracking compensation, and can compensate both harmonics and reactive power.

[0003] To ensure that the use of the active power filter can comply with the normal implementation of energy conservation and emission reduction work, the selection of the internal conductive copper bars of the active power filter is relatively strict. In the prior art, the conductivity test of copper bars usually uses a special tester to test each copper bar one by one. After multiple measurements, each group of data is screened one by one and the average value is obtained to obtain the conductivity of each copper bar, and then each copper bar is compared to select the copper bar with the optimal conductivity for use.

[0004] However, in the process of copper bar conductivity testing, the requirements for the measurement and calculation results of data are relatively strict, the workload of the staff is large, and the calculation error will also increase accordingly, which is not conducive to the selection of copper bars. For this reason, the present invention proposes a copper bar conductivity testing device and a testing method to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a copper bar conductivity testing device and a testing method to solve the problem that in the process of copper bar conductivity testing described in the above background art, there are many measurement data and calculation data, resulting in a large workload for the staff and an increase in calculation error.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A copper bar conductivity testing device, comprising:

[0007] A rigid heat insulation board, on both sides of which are fixedly installed thermal sensitive elements. The front half of the thermal sensitive elements extends to the outside of the rigid heat insulation board, and a deformation groove is provided on the side surface of the front half of the thermal sensitive elements. Between the front ends of the two thermal sensitive elements is provided a T-shaped plate, and a reflective coating is provided on the front surface of the T-shaped plate. Outside the front surface of the T-shaped plate is provided a detection board, and a transparent window and a laser emitter are respectively provided on the upper and lower sides of the inner wall of the detection board;

[0008] Two copper bar bodies, which are respectively located on both sides of the rigid heat insulation board, and the two copper bar bodies are respectively closely attached to the surfaces of the rear halves of the two thermal sensitive elements;

[0009] A flexible heat insulation pad, which is located between the front halves of the two thermal sensitive elements and is adhesively connected to the two thermal sensitive elements respectively.

[0010] Preferably, a base for mounting a laser emitter is fixedly connected to the lower side of the inner wall of the detection plate, a scale symmetrically distributed along the horizontal direction is provided on the surface of the transparent window, the laser emitter is tilted toward the front of the reflective coating and the reflective coating reflects the laser onto the transparent window, a cover is fixedly connected to the edge of the detection plate, and the cover is mounted on the outside of the front half of the two thermal elements.

[0011] Preferably, an insulating layer is provided on the surface of the thermosensitive element close to the copper busbar body, the vertical plate on the back of the T-shaped plate is inserted between the front ends of the two thermosensitive elements and is fixedly connected to the thermosensitive elements by bolts, and the rear half of the thermosensitive element is fixedly connected to the hard insulation board by bolts.

[0012] Preferably, both side surfaces of the rigid heat insulation board are fixedly connected with a guide frame, the surface of the guide frame is provided with a groove for sliding insertion of the copper busbar body, the bottom of the groove is provided with an installation groove for inserting the rear half of the thermal element, one end of the groove is open, and a guide chamfer is provided at the corner of the opening.

[0013] Preferably, a protective frame covering the guide frame is provided on the outside of the guide frame, and the protective frame is fixedly connected to the hard insulation board, and a conductive positive electrode and a conductive negative electrode are respectively provided at both ends of the surface of the protective frame, the conductive positive electrode is located at one end of the inner cavity of the groove and is in the shape of a "7", and the conductive negative electrode is located at the other end of the inner cavity of the groove and is in the shape of a horizontal "丿", one end surface of the copper busbar body is squeezed by the conductive positive electrode and deformed into the shape of a "┐", and the surface of the copper busbar body is squeezed by the conductive negative electrode and deformed into the shape of a horizontal "丨".

[0014] Preferably, an adjustment slot is provided on the surface of the protective frame at one end close to the groove opening, an adjustment slider is installed in the inner cavity of the adjustment slot, the upper and lower side surfaces of the adjustment slider are fixedly connected to the limiting boss, the adjustment slider maintains a sliding connection with the adjustment slot through the limiting boss, the surface of the limiting boss is movably inlaid with positioning balls, the inner side wall of the adjustment slot is provided with a plurality of positioning grooves distributed at equal intervals for the positioning balls to be inserted, and the conductive negative electrode is installed on the back of the adjustment slider.

[0015] Preferably, one end of the adjustment slider is fixedly connected to a sealing layer, and the sealing layer fills the inner cavity of the adjustment slot. A winding roller for winding the sealing layer is rotatably installed on the surface of the protective frame, and a reset torsion spring is provided between the rotating shaft of the winding roller and the protective frame.

[0016] Preferably, the side walls of the protective frame and the guide frame are both provided with a slide groove 1, the inner side wall of the groove is provided with a slide groove 2 corresponding to the slide groove 1, an insulating plate is slidably installed in the inner cavity of the slide groove 2, a wear-resistant pad is bonded and fixed to the surface of the insulating plate, and the thickness of the insulating plate is less than the depth of the slide groove 2.

[0017] Preferably, a material return rack is provided on the upper and lower sides of the hard insulation board, and both ends of the material return rack are fixedly connected to a connecting column, the insulating board is fixed to one end of the connecting column, the connecting column is movably connected to the slide groove, and a ring is movably sleeved on the outer side of the middle part of the connecting column, and a thrust spring is provided between the ring and the material return rack, and the thrust spring is sleeved on the outer side of the connecting column.

[0018] A testing method for the copper busbar conductive testing device includes the following steps:

[0019] Step 1: Insert two copper busbars with different parameters and performance into the inner cavities of the two grooves respectively. During this process, the operator's hands are kept insulated from the copper busbars.

[0020] Step 2: After the copper busbar is fully inserted into the inner cavity of the groove, one end of the copper busbar is pressed against the conductive positive electrode, and the other end of the copper busbar is pressed against the conductive negative electrode. At this time, the copper busbar connects the external circuit, and the external circuits of the two copper busbars are kept in parallel. Under the same voltage, the two copper busbars emit different heat due to their different resistance.

[0021] Step 3: The heat from the copper busbar is transferred to the thermistor. Since the rear half of the thermistor is fixed to the hard insulation board and cannot be deformed, the front half of the thermistor is deformed due to the heat. Since the two thermistors have different temperatures, the deformation degrees are different, and the two thermistors bend towards the same side.

[0022] Step 4: The T-shaped plate will produce a small displacement as the thermal element bends, and the T-shaped plate will tilt. The laser emitted by the laser transmitter will illuminate the surface of the reflective coating and reflect onto the transparent window. The position of the light spot displayed on the transparent window will change with the tilt direction and tilt angle of the T-shaped plate, making it easier for the staff to use the scale to judge the heat generation of the two copper busbars, and then know the difference in the conductive properties of the two copper busbars.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] In the present invention, thermal sensitive elements are attached to both sides of a rigid heat insulation board. One end of each thermal sensitive element extends to the outside of the rigid heat insulation board. A flexible heat insulation pad is adhesively provided between one ends of the thermal sensitive elements. Copper row bodies with different parameters are respectively attached to the surfaces of the other ends of the thermal sensitive elements. After the two copper row bodies are simultaneously energized, heat exchange occurs between the copper row bodies and the thermal sensitive elements. One end of the thermal sensitive element is deformed by heat. Since the deformation amounts of the two thermal sensitive elements are different, one end of the thermal sensitive element will bend to one side, which facilitates the staff to quickly distinguish the heat generation amounts of the two copper row bodies, and further know the quality of the electrical conductivity of the two copper row bodies (good electrical conductivity indicates a large heat generation amount, and poor electrical conductivity indicates a small heat generation amount). BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present invention;

[0026] Figure 2 is a schematic diagram of the relative positions of the detection board and the T-shaped board structures of the present invention;

[0027] Figure 3 is a three-dimensional schematic diagram of the detection board structure of the present invention;

[0028] Figure 4 is a separated schematic diagram of the thermal sensitive element and the T-shaped board structures of the present invention;

[0029] Figure 5 is a half-sectional schematic diagram of the protective frame and the guide frame structures of the present invention;

[0030] Figure 6 is a three-dimensional schematic diagram of the winding roller and the adjusting slider structures of the present invention;

[0031] Figure 7 is an internal schematic diagram of the protective frame structure of the present invention;

[0032] Figure 8 is a three-dimensional schematic diagram of the unloading rack structure of the present invention;

[0033] Figure 9 is a connection schematic diagram of the thermal sensitive element and the guide frame structures of the present invention;

[0034] Figure 10 is an exploded schematic diagram of the thermal sensitive element and the guide frame structures of the present invention.

[0035] In the figure: 1, rigid heat insulation board; 2, thermal sensitive element; 21, deformation groove; 22, insulating layer; 3, copper row body; 4, flexible heat insulation pad; 5, T-shaped plate; 51, reflective coating; 6, detection board; 61, laser emitter; 62, transparent window; 63, scale; 64, base; 65, housing; 7, protection frame; 71, conductive positive electrode; 72, conductive negative electrode; 73, adjustment notch; 74, sealing layer; 75, winding roller; 751, reset torsion spring; 76, adjustment slider; 761, limiting boss; 762, positioning ball; 8, guiding frame; 81, groove; 82, first chute; 83, second chute; 84, guiding chamfer; 85, installation through groove; 9, unloading rack; 91, connecting column; 92, insulating board; 93, wear-resistant pad; 94, collar; 95, thrust spring. Detailed implementation manners

[0036] In order to clearly and completely describe the purpose, technical solutions of the present invention and make the advantages more clear, the following further details the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all the embodiments, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0039] For the purposes of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are set forth in order to provide a thorough understanding of the embodiments. However, it is apparent that, for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures are not described in detail so as not to unnecessarily obscure these embodiments. Additionally, all embodiments may be used in combination with each other.

[0040] Please refer to Figures 1 to 10 , the present invention provides a technical solution:

[0041] Embodiment 1, a copper bar conductivity testing device, comprising: a rigid heat insulation plate 1, a copper bar body 3, and a flexible heat insulation pad 4.

[0042] Specifically, thermal sensitive elements 2 are fixedly installed on both sides of the rigid heat insulation plate 1. The front half of the thermal sensitive element 2 extends to the outside of the rigid heat insulation plate 1, and a deformation groove 21 is formed on the side surface of the front half of the thermal sensitive element 2. When the thermal sensitive element 2 is heated, the thermal sensitive element 2 can expand and deform. Since the rear half of the thermal sensitive element 2 is fixed to the rigid heat insulation plate 1, only the front half of the thermal sensitive element 2 will deform. The formation of the deformation groove 21 is used to reduce the thickness of the front half of the thermal sensitive element 2, thereby controlling the deformation direction of the thermal sensitive element 2. That is, when the thermal sensitive element 2 is heated, the front half of the thermal sensitive element 2 can elongate and deform along the length direction of the thermal sensitive element 2. A T-shaped plate 5 is arranged between the front ends of the two thermal sensitive elements 2, and a reflective coating 51 is arranged on the front surface of the T-shaped plate 5. A detection plate 6 is arranged on the outer side of the front surface of the T-shaped plate 5. Transparent windows 62 and laser emitters 61 are respectively arranged on the upper and lower sides of the inner wall of the detection plate 6. When the heating degrees of the two thermal sensitive elements 2 are different, the deformation degrees of the front halves of the two thermal sensitive elements 2 are different. The two thermal sensitive elements 2 will change from a mutually parallel linear shape to a mutually concentric circular arc shape. At this time, the T-shaped plate 5 will shift and tilt in position. However, the deformation degree of the thermal sensitive element 2 is limited, and the displacement distance of the T-shaped plate 5 is limited. The laser emitted by the laser emitter 61 can always irradiate on the surface of the reflective coating 51. However, since the T-shaped plate 5 has tilted, after the reflective coating 51 reflects the laser, it will irradiate on different positions of the transparent window 62. At this time, the staff can observe the laser reflection position with the help of a scale 63, thereby judging the tilting direction of the T-shaped plate 5, and further knowing the deformation direction of the thermal sensitive element 2;

[0043] Secondly, two busbar bodies 3 are provided and are respectively located on both sides of the rigid heat insulation plate 1. The two busbar bodies 3 are respectively in close contact with the rear half surfaces of the two thermosensitive elements 2. The busbar body 3 is the component to be detected. Both of the two busbar bodies 3 are connected to the external circuit, and the circuits where the two busbar bodies 3 are located are in parallel. The electrical conductivity of the busbar body 3 itself affects the heat generation amount. Specifically, when the electrical conductivity of the busbar body 3 is better, its own heat generation amount is smaller; when the electrical conductivity of the busbar body 3 is worse, its own heat generation amount is larger. And because the busbar body 3 is in close contact with the thermosensitive element 2, after the busbar body 3 generates heat, it will have a heat exchange and heating effect on the thermosensitive element 2. The staff can judge the heat generation amount of the busbar body 3 in contact with the thermosensitive element 2 by judging the deformation and bending direction and degree of the thermosensitive element 2, so as to judge the difference in electrical conductivity between the two busbar bodies 3. That is, the greater the deformation degree of the thermosensitive element 2, the greater the heat generation amount of the busbar body 3 in contact with it, and the worse the electrical conductivity of the busbar body 3; vice versa.

[0044] Furthermore, the flexible heat insulation pad 4 is located between the front halves of the two thermosensitive elements 2 and is adhesively connected to the two thermosensitive elements 2 respectively. The cooperation between the flexible heat insulation pad 4 and the rigid heat insulation plate 1 is used to isolate the heat between the two thermosensitive elements 2 and prevent heat exchange between the two thermosensitive elements 2. And because the flexible heat insulation pad 4 itself has flexibility, it will not affect the deformation of the front halves of the thermosensitive elements 2. At the same time, the flexible heat insulation pad 4 connects the front halves of the two thermosensitive elements 2 together. When the deformation degrees of the two thermosensitive elements 2 are different, the two thermosensitive elements 2 restrict each other and thus bend. The deformation degree sizes of the two thermosensitive elements 2 can be judged according to the bending direction.

[0045] For installing the detection board 6, the present application also has a base 64 fixedly connected to the lower side of the inner wall of the detection board 6 for installing the laser emitter 61. The base 64 is wedge-shaped to ensure that the angle of the laser emitter 61 after installation is inclined upward at a certain angle and irradiates the surface of the reflective coating 51, so that the laser reflected by the reflective coating 51 can irradiate the transparent window 62. A scale table 63 symmetrically distributed in the horizontal direction is provided on the surface of the transparent window 62. The laser emitter 61 is inclined and set to face the front of the reflective coating 51, and the laser is reflected by the reflective coating 51 to the transparent window 62. The staff can observe the position where the laser irradiates on the transparent window 62 through the scale table 63, and thus know the bending direction of the thermosensitive element 2. A housing 65 is fixedly connected to the edge of the detection board 6, and the housing 65 is sleeved outside the front halves of the two thermosensitive elements 2. As Figure 1 shown, the housing 65 is provided to protect the thermosensitive element 2 and prevent the staff from accidentally touching the thermosensitive element 2 when using the device, which affects the normal deformation of the thermosensitive element 2. In addition, the thermosensitive element 2 itself is in a high-temperature state, and the housing 65 can prevent the staff from being scalded by the temperature on the surface of the thermosensitive element 2.

[0046] In order to insulate the thermistor 2 and the copper busbar body 3, the present application also has an insulating layer 22 provided on the surface of the thermistor 2 close to the copper busbar body 3. The insulating layer 22 is made of ceramic material. While ensuring normal heat exchange between the copper busbar body 3 and the thermistor 2, it can also avoid current loss caused by direct contact between the thermistor 2 and the copper busbar body 3. The vertical plate on the back of the T-shaped plate 5 is inserted between the front ends of the two thermistors 2 and is fixedly connected to the thermistor 2 by bolts. The rear half of the thermistor 2 is fixedly connected to the hard insulation board 1 by bolts, thereby ensuring that only the front half of the thermistor 2 can bend and deform.

[0047] In order to ensure that the copper busbar body 3 and the thermal element 2 are exactly aligned, the present application also has a guide frame 8 fixedly connected to both sides of the hard insulation board 1. The surface of the guide frame 8 is provided with a groove 81 for the copper busbar body 3 to slide and insert, which is used to position the copper busbar body 3 to prevent the copper busbar body 3 from shaking at will. The bottom of the groove 81 is provided with an installation groove 85 for the rear half of the thermal element 2 to be inserted. The thermal element 2 and the guide frame 8 are fixedly connected to each other. Figure 9 and Figure 10 As shown in the figure, after the copper busbar body 3 slides into the inner cavity of the groove 81, the copper busbar body 3 can maintain a close fit with the thermal element 2 to ensure the heat exchange efficiency. One end of the groove 81 is open, and a guide chamfer 84 is provided at the corner of the opening to guide the insertion of the copper busbar body 3.

[0048] In order to facilitate the connection between the copper busbar body 3 and the external circuit, the present application also has a protective frame 7 covering the guide frame 8, and the protective frame 7 is fixedly connected to the hard insulation board 1. The guide frame 8 is provided to reduce the heat loss on the surface of the copper busbar body 3, so that the heat of the copper busbar body 3 itself can be exchanged to the thermosensitive element 2 as much as possible. A conductive positive electrode 71 and a conductive negative electrode 72 are respectively provided at both ends of the surface of the protective frame 7. The conductive positive electrode 71 is located at one end of the inner cavity of the groove 81 and is in the shape of a "7". The conductive negative electrode 72 is located at the other end of the inner cavity of the groove 81 and is in the shape of a horizontal "丿". Conductive electrodes are provided on the conductive positive electrode 71 and the conductive negative electrode 72 for connecting to the external circuit. One end surface of the copper busbar body 3 squeezes the conductive positive electrode 71 and deforms it into a "┐" shape. The surface of the copper busbar body 3 squeezes the conductive negative electrode 72 and deforms it into a horizontal "丨" shape. Figure 5As shown, when the copper bar body 3 slides and inserts into the inner cavity of the groove 81, the surface of the copper bar body 3 first squeezes the conductive negative electrode 72 to cause deformation. At this time, the conductive negative electrode 72 can closely fit the surface of the copper bar body 3. Until the copper bar body 3 is completely inserted into the inner cavity of the groove 81, one end face of the copper bar body 3 squeezes the conductive positive electrode 71, and the copper bar body 3 connects to the external circuit. The copper bar body 3 generates heat under the action of current and exchanges heat with the thermal sensitive element 2. That is to say, the copper bar body 3 of this device can automatically start the external circuit after installation, which is more convenient to use.

[0049] In order to adjust the position of the conductive negative electrode 72, the present application also has an adjustment notch 73 opened at one end of the surface of the protective frame 7 close to the opening of the groove 81. An adjustment slider 76 is installed in the inner cavity of the adjustment notch 73. Limiting bosses 761 are fixedly connected to both the upper and lower sides of the adjustment slider 76. The adjustment slider 76 is slidably connected to the adjustment notch 73 through the limiting bosses 761. Positioning balls 762 are movably embedded on the surface of the limiting bosses 761. A plurality of positioning grooves for the positioning balls 762 to be inserted are opened on the inner side wall of the adjustment notch 73 at equal intervals. The conductive negative electrode 72 is installed on the back of the adjustment slider 76. As Figure 5 and Figure 6 shown, the adjustment slider 76 can slide in the inner cavity of the adjustment notch 73 along the length direction of the adjustment notch 73, so as to change the position of the conductive negative electrode 72 to adapt to copper bar bodies 3 of different length dimensions. In addition, after the adjustment slider 76 slides to a suitable position, the positioning balls 762 can be stuck in the positioning grooves on the inner side wall of the adjustment notch 73 to prevent the adjustment slider 76 from sliding easily.

[0050] In order to reduce the heat dissipation from the surface of the copper bar body 3, the present application also has a sealing layer 74 fixedly connected to one end of the adjustment slider 76, and the sealing layer 74 fills the inner cavity of the adjustment notch 73. The sealing layer 74 is made of a flexible material and is used to seal the adjustment notch 73 to reduce the heat dissipation from the surface of the copper bar body 3. A winding roller 75 for winding the sealing layer 74 is rotatably installed on the surface of the protective frame 7. A return torsion spring 751 is arranged between the rotating shaft of the winding roller 75 and the protective frame 7. When the adjustment slider 76 slides in the inner cavity of the adjustment notch 73, the sealing layer 74 can always be automatically wound by the winding roller 75, so as to always maintain a taut state.

[0051] To facilitate the sliding out of the copper bar body 3 from the inner cavity of the groove 81, this application also has a first chute 82 penetrating through the side walls of both the protective frame 7 and the guiding frame 8. A second chute 83 corresponding to the first chute 82 is provided on the inner side wall of the groove 81. An insulating plate 92 is slidably installed in the inner cavity of the second chute 83. A wear-resistant pad 93 is adhesively fixed on the surface of the insulating plate 92. The thickness of the insulating plate 92 is less than the depth of the second chute 83. The insulating plate 92 can move away from or close to the copper bar body 3 in the inner cavity of the second chute 83. After the staff presses the insulating plate 92 and compresses the copper bar body 3, it is convenient to slide the copper bar body 3 out of the inner cavity of the groove 81. Moreover, since the insulating plate 92 is made of insulating material itself, it can also prevent the staff from being electrocuted by the copper bar body 3.

[0052] To remove the two copper bar bodies 3 together, this application also has ejection frames 9 provided on both the upper and lower sides of the hard heat-insulating plate 1. Both ends of the ejection frame 9 are fixedly connected with connecting columns 91. The insulating plate 92 is fixed to one end of the connecting column 91. The connecting column 91 is movably penetrated through the first chute 82. A collar 94 is movably sleeved on the outer side of the middle part of the connecting column 91. A thrust spring 95 is arranged between the collar 94 and the ejection frame 9, and the thrust spring 95 is sleeved on the outer side of the connecting column 91. As Figure 8 and Figure 7 shown, by pressing the two ejection frames 9 close to each other, the staff can clamp the two copper bar bodies 3 at the same time, thus facilitating the simultaneous removal of the two copper bar bodies 3.

[0053] The present invention also discloses a testing method for the copper bar conductivity testing device according to the above, which specifically includes the following steps:

[0054] Step 1: Insert the two copper bar bodies 3 with different parameters and performances into the inner cavities of the two grooves 81 respectively. During this process, the hands of the staff are kept in an insulated state from the copper bar bodies 3.

[0055] Step 2: After the copper bar bodies 3 are completely inserted into the inner cavities of the grooves 81, one end of the copper bar body 3 presses against the conductive positive electrode 71, and the other end on the surface of the copper bar body 3 presses against the conductive negative electrode 72. At this time, the copper bar bodies 3 connect the external circuit, and the external circuits of the two copper bar bodies 3 are kept in parallel. The two copper bar bodies 3 generate different amounts of heat due to different resistances under the same voltage.

[0056] Step 3: The heat of the copper bar bodies 3 is transferred to the thermosensitive elements 2. Since the rear half of the thermosensitive element 2 is fixed to the hard heat-insulating plate 1 and cannot deform, the front half of the thermosensitive element 2 deforms due to heat. Since the temperatures of the two thermosensitive elements 2 are different, the deformation degrees are different, and the two thermosensitive elements 2 bend towards the same side.

[0057] Step 4: The T-shaped plate 5 generates a small amount of displacement as the thermal component 2 bends, and the T-shaped plate 5 tilts. The laser emitted by the laser emitter 61 irradiates on the surface of the reflective coating 51 and is reflected onto the transparent window 62. The position of the light spot displayed on the transparent window 62 changes with the tilt direction and tilt angle of the T-shaped plate 5, thereby facilitating the staff to judge the calorific values of the two copper bar bodies 3 with the help of the scale 63, and further knowing the difference in the electrical conductivity of the two copper bar bodies 3.

[0058] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A copper bar conduction testing device, characterized in that: include: A hard heat insulation board (1), wherein both sides of the hard heat insulation board (1) are fixedly mounted with thermosensitive elements (2), the front half of the thermosensitive element (2) extends to the outside of the hard heat insulation board (1), and the side of the front half of the thermosensitive element (2) is provided with a deformation groove (21), a T-shaped plate (5) is provided between the front ends of the two thermosensitive elements (2), and the front surface of the T-shaped plate (5) is provided with a reflective coating (51), a detection plate (6) is provided on the outside of the front surface of the T-shaped plate (5), and the upper and lower sides of the inner wall of the detection plate (6) are respectively provided with a transparent window (62) and a laser emitter (61); A copper busbar body (3), wherein two copper busbar bodies (3) are provided and are respectively located on both sides of the hard heat insulation board (1), and the two copper busbar bodies (3) are respectively tightly fitted to the rear half surfaces of the two thermal elements (2); A flexible thermal insulation pad (4) is located between the front halves of the two thermal elements (2) and is respectively bonded to the two thermal elements (2).

2. The copper bar conduction testing device according to claim 1, characterized in that: A base (64) for mounting a laser emitter (61) is fixedly connected to the lower side of the inner wall of the detection plate (6), and a scale (63) symmetrically distributed along the horizontal direction is provided on the surface of the transparent window (62). The laser emitter (61) is tilted toward the front of the reflective coating (51) and the reflective coating (51) reflects the laser onto the transparent window (62). A cover (65) is fixedly connected to the edge of the detection plate (6), and the cover (65) is sleeved on the outer side of the front half of the two thermal elements (2).

3. A copper bar conduction test device according to claim 1, characterized in that: An insulating layer (22) is provided on the surface of the thermosensitive element (2) close to the copper busbar body (3); the vertical plate on the back of the T-shaped plate (5) is inserted between the front ends of the two thermosensitive elements (2) and is fixedly connected to the thermosensitive elements (2) via bolts; and the rear half of the thermosensitive element (2) is fixedly connected to the hard insulation board (1) via bolts.

4. The copper bar conductivity testing device according to claim 1, wherein: Both sides of the hard heat insulation board (1) are fixedly connected to a guide frame (8), the surface of the guide frame (8) is provided with a groove (81) for the copper busbar body (3) to be slidably inserted, the bottom of the groove (81) is provided with a mounting groove (85) for the rear half of the heat-sensitive element (2) to be inserted, one end of the groove (81) is open, and a guide chamfer (84) is provided at the corner of the opening.

5. The copper bar conductivity testing device according to claim 4, characterized in that: A protective frame (7) covering the guide frame (8) is provided on the outside of the guide frame (8), and the protective frame (7) is fixedly connected to the hard heat insulation board (1). A conductive positive electrode (71) and a conductive negative electrode (72) are respectively provided at both ends of the surface of the protective frame (7). The conductive positive electrode (71) is located at one end of the inner cavity of the groove (81) and is in the shape of a "7". The conductive negative electrode (72) is located at the other end of the inner cavity of the groove (81) and is in the shape of a horizontal "丿". One end surface of the copper busbar body (3) squeezes the conductive positive electrode (71) and deforms it into a "┐" shape. The surface of the copper busbar body (3) squeezes the conductive negative electrode (72) and deforms it into a horizontal "丨" shape.

6. The copper bar conductivity testing device according to claim 5, characterized in that: One end of the surface of the protective frame (7) close to the opening of the groove (81) is provided with an adjustment notch (73). An adjustment slider (76) is installed in the inner cavity of the adjustment notch (73). Limiting bosses (761) are fixedly connected to the upper and lower sides of the adjustment slider (76). The adjustment slider (76) is slidably connected to the adjustment notch (73) through the limiting bosses (761). Positioning balls (762) are movably embedded on the surface of the limiting bosses (761). A plurality of positioning grooves for the positioning balls (762) to be inserted are arranged at equal intervals on the inner side wall of the adjustment notch (73). The conductive negative electrode (72) is installed on the back of the adjustment slider (76).

7. The copper bar conductivity testing device according to claim 6, characterized in that: One end of the adjustment slider (76) is fixedly connected with a sealing layer (74), and the sealing layer (74) fills the inner cavity of the adjustment notch (73). A winding roller (75) for winding the sealing layer (74) is rotatably installed on the surface of the protective frame (7). A return torsion spring (751) is arranged between the rotating shaft of the winding roller (75) and the protective frame (7).

8. The copper bar conduction testing device according to claim 5, wherein: Chute one (82) is penetrated through the side walls of the protective frame (7) and the guiding frame (8). Chute two (83) corresponding to the chute one (82) is arranged on the inner side wall of the groove (81). An insulating plate (92) is slidably installed in the inner cavity of the chute two (83). A wear-resistant pad (93) is adhesively fixed on the surface of the insulating plate (92). The thickness of the insulating plate (92) is less than the depth of the chute two (83).

9. The copper bar conduction test device according to claim 8, wherein: Unloading racks (9) are arranged on both the upper and lower sides of the hard heat insulation plate (1). Connecting columns (91) are fixedly connected to both ends of the unloading racks (9). The insulating plate (92) is fixed to one end of the connecting column (91). The connecting column (91) is movably penetrated through the chute one (82). A collar (94) is movably sleeved on the outer side of the middle part of the connecting column (91). A thrust spring (95) is arranged between the collar (94) and the unloading rack (9), and the thrust spring (95) is sleeved on the outer side of the connecting column (91).

10. A test method for a copper bar conductivity test device according to any one of claims 1-9, characterized in that: Specifically, it includes the following steps: Step 1: Insert the copper row bodies (3) with two different parameters and performances into the inner cavities of the two grooves (81) respectively. During this process, the hands of the staff are kept insulated from the copper row bodies (3). Step 2: After the copper row bodies (3) are completely inserted into the inner cavities of the grooves (81), one end of the copper row body (3) presses the conductive positive electrode (71), and the other end on the surface of the copper row body (3) presses the conductive negative electrode (72). At this time, the copper row bodies (3) connect the external circuit, and the external circuits of the two copper row bodies (3) are kept in parallel. The two copper row bodies (3) generate different amounts of heat due to different self-resistances under the same voltage. Step 3: The heat of the copper row bodies (3) is transferred to the thermosensitive elements (2). Since the rear half of the thermosensitive element (2) is fixed to the hard heat insulation plate (1) and cannot deform, the front half of the thermosensitive element (2) deforms due to heat. Since the temperatures of the two thermosensitive elements (2) are different, the deformation degrees are different, and the two thermosensitive elements (2) bend towards the same side. Step 4: The T-shaped plate (5) generates a small amount of displacement as the thermal-sensitive element (2) bends, and the T-shaped plate (5) tilts. The laser emitted by the laser emitter (61) irradiates on the surface of the reflective coating (51) and is reflected onto the transparent window (62). The position of the light spot displayed on the transparent window (62) changes with the tilting direction and tilting angle of the T-shaped plate (5), thereby facilitating the staff to judge the heat generation amounts of the two copper bar bodies (3) with the aid of the scale (63), and further knowing the difference in the electrical conductivity of the two copper bar bodies (3).

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