A high temperature environment conductor conductivity test device

Abstract

The present invention relates to the field of conductivity testing technology, and specifically to a high-temperature environment conductor conductivity testing device, comprising a high-temperature chamber arranged inside a test box, and a bridge clamp mechanism arranged inside the high-temperature chamber, a supporting mechanism arranged on the bridge clamp mechanism and used to support the conductor to maintain a horizontal state, and a test arm mechanism arranged on the bridge clamp mechanism, wherein the supporting mechanism comprises a top supporting component arranged on the bridge clamp mechanism and a smoothing component arranged on the top supporting component; the present invention can support the conductor in sections to prevent the conductor from bending and deforming in a high-temperature environment, and can avoid the moving clamp component, which is conducive to the conductivity testing of the conductor in a high-temperature environment, and solves the technical problem that the conductor is easily deformed in a high-temperature environment, resulting in a reduction in the cross-sectional area of ​​the middle section, which affects the conductivity testing method of the traditional standard.

Description

Technical Field

[0001] The invention relates to the technical field of conductivity testing, and in particular to a device for testing the conductivity of a conductor in a high-temperature environment. Background Art

[0002] At present, the conductivity of highly conductive materials with high temperature resistance is greater than 70% and the strength is greater than 500MPa at room temperature. However, when the temperature exceeds 550℃, the tensile strength generally drops below 400MPa due to softening annealing of the substrate. If the alloy content of the material is increased to increase the temperature resistance, the conductivity will drop significantly. Under long-term working conditions of 600℃ and above, the tensile strength of the copper-based and silver-based materials with high conductivity characteristics cannot be maintained above 400MPa.

[0003] The patent document with patent number CN2013103894919 discloses a comprehensive test device for the conductivity, tensile strength and aging of wires and cables, including a test control system, an analytical balance, an electric bridge with a clamp, an insulation resistance tester, a tensile testing machine, a high and low temperature humidity and heat cycle testing machine, a ventilation aging testing machine, an ozone aging testing machine, a xenon lamp weather resistance testing machine, a gas analysis device and a test control system.

[0004] However, during actual use, the inventors found that when testing the conductivity of conductors in a high-temperature environment, the conductors are prone to deformation, especially when suspended over long distances. Due to the effect of gravity, the length of the conductor increases, resulting in a decrease in the cross-sectional area of ​​the middle section, which affects the conductivity testing method of the traditional standard. Summary of the invention

[0005] The purpose of the present invention is to address the deficiencies in the prior art. By providing a high-temperature environment conductor conductivity testing device, the device can support the conductor in sections to prevent the conductor from bending and deforming in a high-temperature environment, and can avoid the moving clamp assembly, which is conducive to conducting conductivity tests on the conductor in a high-temperature environment, thereby solving the technical problem that the conductor is easily deformed in a high-temperature environment, resulting in a reduction in the cross-sectional area of ​​the middle section, which affects the conductivity testing method of the traditional standard.

[0006] In view of the above technical problems, the technical solutions adopted are as follows:

[0007] A high temperature environment conductor conductivity test device, comprising a high temperature chamber arranged inside a test box, a bridge clamp mechanism arranged inside the high temperature chamber, a support mechanism arranged on the bridge clamp mechanism and used to support the conductor to maintain a horizontal state, and a test arm mechanism arranged on the bridge clamp mechanism;

[0008] The supporting mechanism comprises a top supporting assembly arranged on the bridge clamp mechanism and used for segmentally supporting the conductor, and a straightening assembly arranged on the top supporting assembly and used for straightening the conductor;

[0009] The bridge clamp mechanism clamps the conductor horizontally, the top support assembly supports the conductor to maintain a horizontal state in a high temperature environment, the straightening assembly straightens the conductor that has naturally deformed due to the high temperature environment, and the test arm mechanism moves on the conductor to clean the oxide layer at the test point on the conductor, and cooperates with the bridge clamp mechanism to measure the voltage, current, and diameter of conductors of different lengths to obtain the conductivity.

[0010] Preferably, the bridge fixture mechanism comprises a bottom plate arranged inside the high temperature chamber, two sets of guide rails arranged on the bottom plate through support plates, a scale line arranged on one of the guide rails, a first fixed fixture assembly arranged at one end of the guide rail, and a second fixed fixture assembly arranged at the other end of the guide rail;

[0011] The first fixed clamp assembly includes a base arranged at one end of the guide rail, a first bidirectional threaded rod rotatably arranged on the base, two sets of conductive clamps with symmetrical threads arranged on the first bidirectional threaded rod and slidably arranged on the base, and a first hand wheel arranged at the end of the first bidirectional threaded rod.

[0012] Preferably, the top support assembly includes a crossbeam arranged on the support plate, a plurality of groups of hangers that penetrate and are lifted and lowered on the crossbeam, a support plate arranged on the upper end of the hanger and used to support the conductor, a fin plate arranged on the hanger, a height-limiting strip plate arranged on the side wall of the guide rail and used to press the fin plate, a side extension plate arranged on the lower end of the hanger, and two groups of first elastic telescopic parts arranged between the upper surface of the side extension plate and the lower surface of the crossbeam.

[0013] Preferably, the straightening assembly comprises a straightening unit disposed on the support plate and a power unit disposed in the high temperature chamber and used to drive the straightening unit;

[0014] The straightening unit includes two groups of straightening wheels rotatably arranged on the support plate, a first gear rotatably arranged at the bottom of the support plate and coaxially arranged with the straightening wheel, and a second gear arranged at the bottom of the support plate and used to drive the first gear.

[0015] Preferably, the power unit includes an insulation board arranged on the side wall of the high-temperature chamber, a U-shaped bracket arranged on the inner side of the insulation board, a bar hole opened on the U-shaped bracket, a limit block slidably arranged in the bar hole, a sleeve rod passing through and slidably arranged on the limit block, a first rack arranged at one end of the sleeve rod and used to drive the second gear, a screw rod threadedly arranged inside the sleeve rod, a first magnet block arranged at one end of the screw rod and in contact with the inner side of the insulation board, a first limit strip groove opened on the outer side of the insulation board, a second magnet block arranged inside the first limit strip groove and magnetically attracted to the first magnet block, and a screw cap arranged on the second magnet block.

[0016] Preferably, the test arm mechanism includes a movable clamp assembly slidably arranged on the two guide rails, a cleaning assembly arranged on the movable clamp assembly and used for cleaning test points on the conductor, and a magnetic movable assembly arranged on the heat insulation board and used for driving the movable clamp assembly.

[0017] Preferably, the dynamic clamp assembly includes a hollow gantry slidably arranged on the two guide rails, a second bidirectional threaded rod rotatably arranged inside the hollow gantry, two groups of threaded blocks threadedly arranged on the second bidirectional threaded rod, a vertical rod arranged at the bottom of the threaded block and extending to the outside of the hollow gantry, a channel opened on the hollow gantry for the vertical rod to move, a clamp arranged at the lower end of the vertical rod, a semicircular hollow splint arranged on the inner wall of the clamp through a second elastic telescopic part and used for clamping a conductor, an insulating and heat-insulating pad arranged on the inner wall of the semicircular hollow splint, a conductive terminal arranged on the inner wall of the insulating and heat-insulating pad, two groups of heat-insulating hoses connected to the outer wall of the semicircular hollow splint, two groups of limiting rails symmetrically arranged on the hollow gantry and used to drive the wing plate to descend with the support plate through the suspension rod, a second handwheel arranged at one end of the second bidirectional threaded rod, a third magnet block coaxially arranged on the second handwheel, and a fourth magnet block eccentrically arranged on the second handwheel.

[0018] Preferably, the magnetic dynamic component includes a second limit strip groove opened on the outer side of the insulation board, a slider slidably arranged inside the second limit strip groove, a turntable rotatably arranged on the slider, a first operating rod fixedly arranged in the middle position of the turntable and one end of which passes through the slider, a first electromagnet arranged at one end of the first operating rod and magnetically attracted to the third magnet block, a first switch button arranged at the other end of the first operating rod, a second operating rod eccentrically fixed on the turntable and one end of which passes through the slider, a second electromagnet arranged at one end of the second operating rod and magnetically attracted to the fourth magnet block, and a second switch button arranged at the other end of the second operating rod.

[0019] Preferably, the cleaning assembly includes several groups of cleaning wheels symmetrically arranged on the hollow gantry through a mounting frame and in contact with the conductor, cleaning strips arranged on the cleaning wheels along a circumferential direction, a third gear rotatably arranged on the mounting frame and driving the cleaning wheels through a transmission method of a sprocket and a chain, and a second rack arranged on the base plate through a vertical rod and used to drive the third gear.

[0020] Beneficial effects of the present invention:

[0021] (1) The supporting mechanism and the test arm mechanism provided in the present invention cooperate with each other. On the one hand, the conductor can be supported in sections to ensure that the conductor is always in a horizontal state, preventing the conductor from bending and deforming in a high temperature environment, and can avoid the movable fixture assembly, facilitating the movable fixture assembly to move horizontally along the conductor, which is conducive to testing the conductivity of the conductor in a high temperature environment. On the other hand, the fixture is divided into a fixed fixture and a movable fixture. The fixed fixture clamps one end of the conductor and does not move. The movable fixture can measure the distance between the fixed fixture and the conductor diameter in real time, thereby facilitating the test of the conductivity.

[0022] (2) The straightening unit and the power unit provided in the present invention cooperate with each other. On the one hand, the natural expansion and contraction deformation of the conductor caused by non-gravity in a high temperature environment can be automatically straightened without causing the conductor to be pulled, deformed or even broken, thereby ensuring that the conductor is in a straight state and the accuracy of the conductor length measurement is ensured, that is, the accuracy of the conductor conductivity test is improved; on the other hand, the straightening unit can be manually operated outside the high temperature chamber to work, thereby avoiding frequent opening of the heat-insulating transparent window of the high temperature chamber, preventing the heat in the high temperature chamber from spilling out, and reducing energy consumption;

[0023] (3) The present invention cooperates with the movable clamp assembly and the cleaning assembly to ensure, on the one hand, that the semicircular hollow clamp always works at room temperature, thereby preventing the semicircular hollow clamp from expanding and deforming at high temperatures, thereby causing deformation of the conductor clamped by it, and reducing the influence of the clamp on the measurement accuracy at high temperatures; on the other hand, the flexible clamping method is adopted to prevent the conductor from being damaged by rigid clamping, thereby affecting the accuracy of the measurement data, and can automatically clean the test point of the conductor, remove the oxide layer, and reduce the influence of the conductivity of the test conductor. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0025] Figure 1 The figure is a schematic diagram of the structure of a conductor conductivity testing device in a high temperature environment.

[0026] Figure 2 It is a structural diagram of the supporting mechanism.

[0027] Figure 3 It is a structural schematic diagram of the bridge clamp mechanism.

[0028] Figure 4 It is a schematic structural diagram of the first fixed fixture assembly.

[0029] Figure 5 It is a structural cross-sectional view of the conductive clamp.

[0030] Figure 6 It is a structural schematic diagram of the top support assembly.

[0031] Figure 7 This is a schematic diagram of the structure of the straightening unit.

[0032] Figure 8 It is a structural schematic diagram of the top support assembly in the working state.

[0033] Fig. 9 A schematic diagram of the structure of the power unit.

[0034] Fig.10 It is a schematic diagram of the structure of the sleeve rod.

[0035] Fig.11 It is a structural schematic diagram of the test arm mechanism.

[0036] Fig.12 A schematic diagram of the structure of the cleaning component.

[0037] Fig.13 It is a structural schematic diagram of the movable clamp assembly.

[0038] Fig.14 It is a structural schematic diagram of a semicircular hollow splint.

[0039] Fig.15 It is a schematic diagram of the structure of the magnetic dynamic component. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0041] Embodiment 1

[0042] like Figure 1-Figure 15 As shown, a high temperature environment conductor conductivity test device comprises a high temperature chamber 11 arranged inside a test box 1, and a bridge clamp mechanism 2 arranged inside the high temperature chamber 11, a support mechanism 3 arranged on the bridge clamp mechanism 2 and used to support the conductor to maintain a horizontal state, and a test arm mechanism 4 arranged on the bridge clamp mechanism 2;

[0043] The supporting mechanism 3 includes a supporting component 31 disposed on the bridge clamp mechanism 2 and used for segmentally supporting the conductor, and a straightening component 32 disposed on the supporting component 31 and used for straightening the conductor;

[0044] The bridge clamp mechanism 2 clamps the conductor horizontally, the top support assembly 31 supports the conductor to maintain a horizontal state in a high temperature environment, the straightening assembly 32 straightens the conductor that has naturally deformed due to the high temperature environment, and the test arm mechanism 4 moves on the conductor to clean the oxide layer at the test point on the conductor, and cooperates with the bridge clamp mechanism 2 to measure the voltage, current, and diameter of conductors of different lengths to obtain the conductivity.

[0045] It should be noted that an existing electric heating source is arranged inside the high temperature chamber 11 and near the conductor, and argon gas is sealed and passed through, and a gas overpressure relief hole is provided to facilitate the temperature in the high temperature chamber 11 to reach a specified value.

[0046] It is worth mentioning that a heat-insulating transparent window 12 is provided on the side wall of the high-temperature chamber 11, which is convenient for viewing the internal situation of the high-temperature chamber 11 so as to test the conductivity of the conductor.

[0047] In this embodiment, by cooperating with the supporting mechanism 3 and the test arm mechanism 4, on the one hand, the conductor can be supported in sections to ensure that the conductor always remains in a horizontal state to prevent the conductor from bending and deforming in a high temperature environment, and the movable clamp assembly 41 can be avoided to facilitate the horizontal movement of the movable clamp assembly 41 along the conductor, which is beneficial to the conductivity testing of the conductor in a high temperature environment. On the other hand, the clamp is divided into a fixed clamp and a movable clamp. The fixed clamp clamps one end of the conductor and is fixed, and the movable clamp can measure the distance between it and the fixed clamp and the conductor diameter in real time, thereby facilitating the conductivity testing.

[0048] In detail, first, after opening the heat-insulating transparent window 12, the conductor is horizontally placed on the top support assembly 31, and the first fixed clamp assembly 24 and the second fixed clamp assembly 25 are manually clamped to clamp the two ends of the conductor respectively, and the support plate 313 is driven by the first elastic telescopic member 317 to horizontally support the conductor. Then, the heat-insulating transparent window 12 is closed, and after the temperature inside the high-temperature chamber 11 reaches a specified value, the power unit 322 is manually driven to drive the straightening unit 321 from the first fixed clamp assembly 24 to the second fixed clamp assembly 25. The conductor is gradually straightened by the position of the component 25, and then the movable clamp component 41 is manually driven to move horizontally through the magnetic component 43. During the horizontal movement of the movable clamp component 41, the fin plate 314 is driven to bring the suspension rod 312 and the support plate 313 down in sequence through the limit rail 4191, so as to avoid the horizontal movement of the movable clamp component 41. At the same time, after the movable clamp component 41 is separated from each support plate 313, the support plate 313 is driven by the first elastic telescopic component 317 to rise and reset, and continue to support the conductor. Then, according to the guide rail 23, the movable clamp assembly 41 is moved horizontally to the specified position, and then the two clamps 415 of the movable clamp assembly 41 are manually driven by the magnetic moving assembly 43 to move toward the conductor, so that the two semicircular hollow clamps 416 clamp the conductor, so that the insulating heat insulation pad 417 contacts the surface of the conductor, and the conductive terminal 418 on the inner wall of the insulating heat insulation pad 417 contacts the test point on the conductor, and cooperates with the first fixed clamp assembly 24 to measure the voltage, current, and diameter of conductors of different lengths to obtain the conductivity. At the same time, the semicircular hollow The inside of the clamp 416 exchanges coolant with the external cold source through the insulating hose 419 to prevent the semicircular hollow clamp 416 from deforming in a high temperature environment. Then, the movable clamp assembly 41 is manually driven by the magnetic component 43 to loosen the conductor, and then the movable clamp assembly 41 is driven to move horizontally, so that the third gear 424, driven by the second rack 425, rotates synchronously with the cleaning wheel 422, so that the cleaning strip 423 of the cleaning wheel 422 cleans the oxide layer at the test point on the conductor, which is beneficial to the accuracy of the conductor conductivity test.

[0049] Further, if Figure 1-Figure 4 As shown, the bridge fixture mechanism 2 includes a bottom plate 21 disposed inside the high temperature chamber 11, two sets of guide rails 23 disposed on the bottom plate 21 through support plates 22, scale lines disposed on one of the guide rails 23, a first fixed fixture assembly 24 disposed at one end of the guide rail 23, and a second fixed fixture assembly 25 disposed at the other end of the guide rail 23;

[0050] The first fixed clamp assembly 24 includes a base 241 arranged at one end of the guide rail 23, a first bidirectional threaded rod 242 rotatably arranged on the base 241, two sets of conductive clamps 243 with symmetrical threads arranged on the first bidirectional threaded rod 242 and slidably arranged on the base 241, and a first hand wheel 244 arranged at the end of the first bidirectional threaded rod 242.

[0051] It is worth mentioning that Figure 5 As shown, the outer surface of the conductive clamp 243 is provided with an insulating heat-insulating wrapping layer, and a conductive head is embedded in the insulating heat-insulating wrapping layer. The conductive head is electrically connected to the conductive clamp 243. The insulating heat-insulating wrapping layer adopts aluminum silicate fiber cotton. Aluminum silicate fiber cotton has the advantages of excellent thermal insulation properties, low thermal conductivity, small heat capacity, good resistance to mechanical vibration, small thermal expansion, good thermal insulation performance, etc. It can absorb more than 80% of medium and high frequency waves above 500Hz and is usually used above 800℃.

[0052] It should be noted that the structure of the second fixed clamp assembly 25 is the same as that of the first fixed clamp assembly 24 . The first fixed clamp assembly 24 and the second fixed clamp assembly 25 cooperate to clamp the two ends of the conductor respectively.

[0053] In this embodiment, the bridge clamp mechanism 2 is provided to respectively clamp the two ends of the conductor, which can not only electrically connect the conductor but also fix the two ends of the conductor.

[0054] In detail, the conductor is placed horizontally on the top support assembly 31, and the first bidirectional threaded rod 242 is manually driven to rotate through the first hand wheel 244. The first bidirectional threaded rod 242 drives two conductive jaws 243 to clamp one end of the conductor. Similarly, the second fixed clamp assembly 25 clamps the other end of the conductor.

[0055] Further, if Figure 3-Figure 8 As shown, the top support assembly 31 includes a crossbeam 311 arranged on the support plate 22, a plurality of groups of suspension rods 312 that penetrate and are lifted and lowered on the crossbeam 311, a support plate 313 arranged at the upper end of the suspension rod 312 and used to support the conductor, a fin plate 314 arranged on the suspension rod 312, a height limiting strip plate 315 arranged on the side wall of the guide rail 23 and used to press the fin plate 314, a side extension plate 316 arranged at the lower end of the suspension rod 312, and two groups of first elastic telescopic members 317 arranged between the upper surface of the side extension plate 316 and the lower surface of the crossbeam 311.

[0056] It should be noted that the first elastic telescopic member 317 is composed of a telescopic rod and a spring, which ensures that the suspension rod 312 can only be raised and lowered, restricts the self-rotation of the suspension rod 312, thereby avoiding the self-rotation of the support plate 313 and ensuring the stability of the support plate 313.

[0057] In this embodiment, the supporting assembly 31 is provided to support the conductor in sections, thereby ensuring that the conductor is always kept in a horizontal state and preventing the conductor from bending and deforming in a high temperature environment.

[0058] In detail, the suspension rod 312 supports the conductor with the support plate 313 under the drive of the first elastic telescopic member 317, and the suspension rod 312 limits the rising height of the support plate 313 under the action of the height limiting strip 315, ensuring that each support plate 313 is on the same horizontal plane and will not push up the conductor, causing the conductor to bend upward.

[0059] Further, if Figure 2 and Figure 6-Figure 10 As shown, the straightening assembly 32 includes a straightening unit 321 disposed on the support plate 313 and a power unit 322 disposed in the high temperature chamber 11 and used to drive the straightening unit 321;

[0060] The straightening unit 321 includes two sets of straightening wheels 3211 rotatably disposed on the support plate 313, a first gear 3212 rotatably disposed at the bottom of the support plate 313 and coaxially disposed with the straightening wheel 3211, and a second gear 3213 disposed at the bottom of the support plate 313 and used to drive the first gear 3212;

[0061] The power unit 322 includes a heat insulation plate 3221 arranged on the side wall of the high temperature chamber 11, a U-shaped bracket 3222 arranged on the inner side of the heat insulation plate 3221, a bar hole 3223 opened on the U-shaped bracket 3222, a limit block slidably arranged in the bar hole 3223, a sleeve rod 3224 that passes through and is slidably arranged on the limit block, a first rack 3225 arranged at one end of the sleeve rod 3224 and used to drive the second gear 3213, a screw rod 3226 threadedly arranged inside the sleeve rod 3224, a first magnet block 3227 arranged at one end of the screw rod 3226 and affixed to the inner side of the heat insulation plate 3221, a first limit bar groove 3228 opened on the outer side of the heat insulation plate 3221, a second magnet block 3229 arranged in the first limit bar groove 3228 and magnetically attracted to the first magnet block 3227, and a screw cap arranged on the second magnet block 3229.

[0062] It should be noted that the smoothing wheel 3211 is made of insulating and heat-insulating material, specifically aluminum silicate fiber.

[0063] It is worth mentioning that the smoothing wheels 3211 on both sides gently clamp the conductor, and the contact pressure on the conductor is relatively small. The rotation of the smoothing wheels 3211 can only provide force to straighten the conductor. After each section of the conductor is straightened, the smoothing wheels 3211 will continue to rotate idly, but cannot provide force to stretch the conductor to become longer, that is, it is ensured that each section of the conductor is fully straightened in turn.

[0064] It should also be noted that the sleeve rod 3224 can only pass through the limit block to slide horizontally and cannot rotate on its own.

[0065] In this embodiment, by cooperating with the straightening unit 321 and the power unit 322, on the one hand, the natural expansion and contraction deformation of the conductor caused by non-gravity in a high temperature environment can be automatically straightened without causing the conductor to be pulled, deformed or even broken, thereby ensuring that the conductor is in a straight line and the accuracy of the conductor length measurement is ensured, that is, the accuracy of the conductor conductivity test is improved; on the other hand, the straightening unit 321 can be manually operated outside the high temperature chamber 11 to work, thereby avoiding frequent opening of the heat-insulating transparent window 12 of the high temperature chamber 11, preventing the heat in the high temperature chamber 11 from overflowing, and reducing energy consumption.

[0066] In detail, the movable clamp assembly 41 initially stops at the position of the first fixed clamp assembly 24. After the temperature inside the high temperature chamber 11 reaches the specified value, the second magnet block 3229 is manually moved along the first limiting strip groove 3228 to one end close to the first fixed clamp assembly 24, so that the second magnet block 3229 moves along the strip hole 3223 with the sleeve rod 3224 and the limiting block through the first magnet block 3227, so that the first rack 3225 stops at the position of the first fixed clamp assembly 24, and then, the second magnet block 3229 is manually rotated by the screw cap, and the second magnet block 3229 drives the screw rod 3226 to rotate by the first magnet block 3227, and the screw rod 3226 drives the sleeve rod 3224 to slide relatively, so that the first rack 3225 at one end of the sleeve rod 3224 5 is moved to the position of the second gear 3213, and then the second magnet block 3229 is manually moved along the first limiting groove 3228 toward the second fixed fixture assembly 25, so that the first rack 3225 drives the second gear 3213 to rotate, and the second gear 3213 drives the straightening wheel 3211 to rotate through the first gear 3212, so that the straightening wheel 3211 straightens the conductor toward the second fixed fixture assembly 25, thereby straightening the entire conductor in sequence and continuously, and the first rack 3225 stops after moving to the position of the second fixed fixture assembly 25, so that the last group of straightening wheels 3211 straightens the natural deformation of the entire conductor to the position of the second fixed fixture assembly 25, without affecting the cooperation between the movable fixture assembly 41 and the first fixed fixture assembly 24, so as to test the conductivity of conductors of different lengths.

[0067] Further, if Figure 2-Figure 3 , Figure 6 and Figure 11-Figure 15 As shown, the test arm mechanism 4 includes a movable fixture assembly 41 slidably disposed on the two guide rails 23, a cleaning assembly 42 disposed on the movable fixture assembly 41 and used to clean the test points on the conductor, and a magnetic moving assembly 43 disposed on the heat insulation board 3221 and used to drive the movable fixture assembly 41;

[0068] The movable clamp assembly 41 includes a hollow gantry 411 slidably arranged on the two guide rails 23, a second bidirectional threaded rod 412 rotatably arranged inside the hollow gantry 411, a threaded block 413 with two sets of threads arranged on the second bidirectional threaded rod 412, a vertical rod 414 arranged at the bottom of the threaded block 413 and extending to the outside of the hollow gantry 411, a channel opened on the hollow gantry 411 and for the vertical rod 414 to move, a hoop 415 arranged at the lower end of the vertical rod 414, a semicircular hollow clamping plate 416 arranged on the inner wall of the hoop 415 through a second elastic telescopic member and used for clamping the conductor, and a hollow clamping plate 417 arranged on the semicircular hollow clamping plate 418. 16, an insulating heat-insulating pad 417 on the inner wall, a conductive terminal 418 arranged on the inner wall of the insulating heat-insulating pad 417, two groups of heat-insulating hoses 419 connected to the outer wall of the semicircular hollow clamp 416, two groups of limiting rails 4191 symmetrically arranged on the hollow door frame 411 and used to drive the wing plate 314 to descend with the support plate 313 through the suspension rod 312, a second hand wheel 4192 arranged at one end of the second bidirectional threaded rod 412, a third magnet block 4193 coaxially arranged on the second hand wheel 4192, and a fourth magnet block 4194 eccentrically arranged on the second hand wheel 4192, and the insulating heat-insulating pad 417 is made of aluminum silicate fiber cotton;

[0069] The cleaning assembly 42 includes a plurality of cleaning wheels 422 symmetrically arranged on the hollow gantry 411 through a mounting frame 421 and in contact with the conductor, a cleaning bar 423 arranged on the cleaning wheel 422 along a circumferential direction, a third gear 424 rotatably arranged on the mounting frame 421 and driving the cleaning wheel 422 through a sprocket and chain transmission, and a second rack 425 arranged on the base plate 21 through a vertical rod and used to drive the third gear 424.

[0070] It is worth mentioning that the interior of the semicircular hollow clamp plate 416 exchanges cooling fluid with an external cold source through a heat-insulating hose 419 .

[0071] It should be noted that an existing vernier caliper is provided on the clamp 415 , and the vernier caliper can measure and display the diameter of the conductor in real time.

[0072] It should also be noted that the cleaning wheel 422 is made of insulating and heat-insulating material, specifically aluminum silicate fiber.

[0073] It is worth mentioning that the conductive jaw 243 of the first fixed clamp assembly 24 is electrically connected to the conductive terminal 418 of the semicircular hollow clamp 416 through a wire, and a current and voltage measuring instrument is provided on the wire connecting the conductive jaw 243 and the conductive terminal 418.

[0074] In this embodiment, by cooperating with the movable clamp assembly 41 and the cleaning assembly 42, on the one hand, the semicircular hollow clamp plate 416 is ensured to always work at room temperature, thereby preventing the semicircular hollow clamp plate 416 from expanding and deforming at high temperatures, causing deformation of the conductor clamped by it, and reducing the influence of the clamp on the measurement accuracy at high temperatures; on the other hand, a flexible clamping method is adopted to avoid the conductor being rigidly clamped, affecting the accuracy of the measurement data, and can automatically clean the test points of the conductor, remove the oxide layer, and reduce the influence of the conductivity of the test conductor.

[0075] In detail, when the hollow gantry 411 moves on the guide rail 23, the limit rail 4191 drives the fin plate 314 to descend with each support plate 313 through the suspension rod 312 in sequence, so that the support plate 313 avoids the semicircular hollow clamping plate 416. At the same time, the second rack 425 drives the third gear 424 to rotate, and the third gear 424 drives the cleaning wheel 422 to rotate through the transmission method of the sprocket and chain. The cleaning strip 423 of the cleaning wheel 422 cleans the test point of the conductor. Then, after the hollow gantry 411 stays at the specified position on the guide rail 23, the second bidirectional threaded rod 412 drives The two threaded blocks 413 are close to each other, and the threaded blocks 413 are brought close to each other with two clamps 415 through the vertical rod 414. The clamps 415 clamp the conductor with two semicircular hollow clamps 416 through the second elastic telescopic member, so that the conductive terminal 418 on the inner wall of the insulating and heat-insulating pad 417 is in contact with the test point of the conductor, so that the voltage value and the current value are measured according to the current and voltage measuring instrument, the scale line on the guide rail 23 measures the length from the test point of the conductor to the first fixed clamp assembly 24, and the vernier caliper measures the diameter of the conductor in real time. Finally, the conductivity is obtained according to the existing conductivity calculation formula.

[0076] Further, if Figure 2 , Fig. 9 and Fig.15 As shown, the magnetic dynamic component 43 includes a second limiting groove 431 opened on the outer side of the insulation plate 3221, a slider 432 slidably set inside the second limiting groove 431, a turntable 433 rotatably set on the slider 432, a first operating rod 434 fixedly set at the middle position of the turntable 433 and one end of which passes through the slider 432, a first electromagnet 435 set at one end of the first operating rod 434 and magnetically attracted to the third magnet block 4193, a first switch button 436 set at the other end of the first operating rod 434, a second operating rod 437 eccentrically fixed on the turntable 433 and one end of which passes through the slider 432, a second electromagnet 438 set at one end of the second operating rod 437 and magnetically attracted to the fourth magnet block 4194, and a second switch button 439 set at the other end of the second operating rod 437.

[0077] It should be noted that the outer surfaces of the first magnet block 3227, the second magnet block 3229, the third magnet block 4193 and the fourth magnet block 4194 are all provided with a heat-insulating protective layer of aluminum silicate fiber cotton to prevent the magnet blocks from being demagnetized due to high temperature.

[0078] In this embodiment, by setting up the magnetic moving component 43, the moving clamp component 41 can be manually operated to work outside the high temperature chamber 11, avoiding frequent opening of the insulating transparent window 12 of the high temperature chamber 11, preventing the heat in the high temperature chamber 11 from overflowing, and reducing energy consumption.

[0079] In detail, when the position of the movable clamp assembly 41 needs to be moved, the first electromagnet 435 is energized manually through the first switch button 436, and then the first operating rod 434 is held to drive the hollow door frame 411 to move to the specified position on the guide rail 23 through the first electromagnet 435, the third magnet block 4193, the second hand wheel 4192, and the second bidirectional threaded rod 412. Then, the first electromagnet 435 is manually de-energized through the first switch button 436, and then the second electromagnet 438 is manually energized through the second switch button 439, and then the second bidirectional threaded rod 412 is manually driven to rotate through the second operating rod 437, the second electromagnet 438, the fourth magnet block 4194, and the second hand wheel 4192. The second bidirectional threaded rod 412 then drives the two hoops to approach each other so that the two semicircular hollow clamps 416 clamp the conductor.

[0080] Embodiment 2

[0081] Components identical or corresponding to those in the first embodiment are marked with the same reference numerals as those in the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The second embodiment differs from the first embodiment in that:

[0082] The conductive clamping jaw 243 of the first fixed clamp assembly 24 is also provided with an existing vernier caliper, which can measure and display the diameter of the conductor end in real time.

[0083] In this embodiment, due to the high temperature environment, the diameter of each section of the conductor may be different. By setting two vernier calipers on the conductive clamp 243 of the first fixed clamp assembly 24 and on the clamp 415, the diameters of the conductors measured by the two vernier calipers may be different. According to the existing truncated cone average cross-sectional area calculation formula, the average cross-sectional area of ​​the conductor between the clamp 415 and the first fixed clamp assembly 24 is obtained, and then the conductivity is accurately obtained according to the existing conductivity calculation formula.

[0084] Working process:

[0085] First, after opening the heat-insulating transparent window 12, place the conductor horizontally on the top support assembly 31, and manually make the first fixed clamp assembly 24 and the second fixed clamp assembly 25 respectively clamp the two ends of the conductor, and the support plate 313 horizontally supports the conductor under the drive of the first elastic telescopic member 317. Then, close the heat-insulating transparent window 12. After the temperature inside the high-temperature chamber 11 reaches the specified value, manually drive the straightening unit 321 from the position of the first fixed clamp assembly 24 to the position of the second fixed clamp assembly 25 through the power unit 322 to gradually straighten the conductor. Then, manually drive the movable clamp assembly 41 to move horizontally through the magnetic moving assembly 43. During the horizontal movement of the movable clamp assembly 41, the fin plate 314 is driven in sequence with the suspension rod 312, the support plate 313 and the support plate 313 through the limiting track 4191. The plate 313 descends, thereby avoiding the horizontal movement of the movable clamp assembly 41. At the same time, after the movable clamp assembly 41 is separated from each support plate 313, the support plate 313 is driven by the first elastic telescopic member 317 to rise and reset, and continue to support the conductor. Then, according to the scale line on the guide rail 23, the movable clamp assembly 41 is horizontally moved to the specified position, and then the two clamps 415 of the movable clamp assembly 41 are manually driven by the magnetic moving assembly 43 to move toward the conductor, so that the two semicircular hollow clamps 416 clamp the conductor, so that the insulating and thermal insulation pad 417 contacts the surface of the conductor, and the conductive terminal 418 on the inner wall of the insulating and thermal insulation pad 417 contacts the test point on the conductor, and cooperates with the first fixed clamp assembly 24 to measure the voltage, current, and diameter of conductors of different lengths to obtain the conductivity.

[0086] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front and back", "left and right", etc. are based on the directions or positional relationships shown in the accompanying 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 component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the invention.

[0087] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0088] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A high temperature environment conductor conductivity test device, characterized in that: It includes a high temperature chamber arranged inside the test box, a bridge clamp mechanism arranged inside the high temperature chamber, a support mechanism arranged on the bridge clamp mechanism and used to support the conductor to maintain a horizontal state, and a test arm mechanism arranged on the bridge clamp mechanism; The supporting mechanism comprises a top supporting assembly arranged on the bridge clamp mechanism and used for segmentally supporting the conductor, and a straightening assembly arranged on the top supporting assembly and used for straightening the conductor; The bridge clamp mechanism clamps the conductor horizontally, the top support assembly supports the conductor to maintain a horizontal state in a high temperature environment, the straightening assembly straightens the conductor that is naturally deformed due to the high temperature environment, and the test arm mechanism moves on the conductor to clean the oxide layer at the test point on the conductor, and cooperates with the bridge clamp mechanism to measure the voltage, current, and diameter of conductors of different lengths to obtain the conductivity; The bridge fixture mechanism includes a bottom plate arranged inside the high temperature chamber, two sets of guide rails arranged on the bottom plate through support plates, a scale line arranged on one of the guide rails, a first fixed fixture assembly arranged at one end of the guide rail, and a second fixed fixture assembly arranged at the other end of the guide rail; The first fixed clamp assembly includes a base arranged at one end of the guide rail, a first bidirectional threaded rod rotatably arranged on the base, two sets of conductive clamps symmetrically threaded on the first bidirectional threaded rod and slidably arranged on the base, and a first hand wheel arranged at the end of the first bidirectional threaded rod; The top support assembly includes a crossbeam arranged on the support plate, a plurality of groups of suspension rods that penetrate and are lifted and lowered on the crossbeam, a support plate arranged on the upper end of the suspension rod and used to support the conductor, a fin plate arranged on the suspension rod, a height-limiting strip plate arranged on the side wall of the guide rail and used to press the fin plate, a side extension plate arranged on the lower end of the suspension rod, and two groups of first elastic telescopic parts arranged between the upper surface of the side extension plate and the lower surface of the crossbeam.

2. A high temperature environment conductor conductivity testing device according to claim 1, characterized in that: The straightening assembly comprises a straightening unit disposed on the support plate and a power unit disposed in the high temperature chamber and used to drive the straightening unit; The straightening unit includes two groups of straightening wheels rotatably arranged on the support plate, a first gear rotatably arranged at the bottom of the support plate and coaxially arranged with the straightening wheel, and a second gear arranged at the bottom of the support plate and used to drive the first gear.

3. A high temperature environment conductor conductivity testing device according to claim 2, characterized in that: The power unit includes an insulation board arranged on the side wall of the high-temperature chamber, a U-shaped bracket arranged on the inner side of the insulation board, a bar hole opened on the U-shaped bracket, a limit block slidably arranged in the bar hole, a sleeve rod passing through and slidably arranged on the limit block, a first rack arranged at one end of the sleeve rod and used to drive a second gear, a screw rod threadedly arranged inside the sleeve rod, a first magnet block arranged at one end of the screw rod and in contact with the inner side of the insulation board, a first limit bar groove opened on the outer side of the insulation board, a second magnet block arranged inside the first limit bar groove and magnetically attracted to the first magnet block, and a screw cap arranged on the second magnet block.

4. A high temperature environment conductor conductivity testing device according to claim 3, characterized in that: The test arm mechanism includes a movable fixture assembly slidably arranged on the two guide rails, a cleaning assembly arranged on the movable fixture assembly and used for cleaning test points on the conductor, and a magnetic moving assembly arranged on the heat insulation board and used for driving the movable fixture assembly.

5. A high temperature environment conductor conductivity testing device according to claim 4, characterized in that: The movable clamp assembly includes a hollow gantry slidably arranged on the two guide rails, a second bidirectional threaded rod rotatably arranged inside the hollow gantry, two groups of threaded blocks threadedly arranged on the second bidirectional threaded rod, a vertical rod arranged at the bottom of the threaded block and extending to the outside of the hollow gantry, a channel opened on the hollow gantry for the vertical rod to move, a clamp arranged at the lower end of the vertical rod, a semicircular hollow splint arranged on the inner wall of the clamp through a second elastic telescopic member and used for clamping a conductor, an insulating and heat-insulating pad arranged on the inner wall of the semicircular hollow splint, a conductive terminal arranged on the inner wall of the insulating and heat-insulating pad, two groups of heat-insulating hoses connected to the outer wall of the semicircular hollow splint, two groups of limiting rails symmetrically arranged on the hollow gantry and used to drive the wing plate to descend with the support plate through the suspension rod, a second hand wheel arranged at one end of the second bidirectional threaded rod, a third magnet block coaxially arranged on the second hand wheel, and a fourth magnet block eccentrically arranged on the second hand wheel.

6. A high temperature environment conductor conductivity testing device according to claim 5, characterized in that: The magnetic dynamic component includes a second limiting strip groove opened on the outer side of the insulation board, a slider slidably arranged inside the second limiting strip groove, a turntable rotatably arranged on the slider, a first operating rod fixedly arranged in the middle position of the turntable and one end of which passes through the slider, a first electromagnet arranged at one end of the first operating rod and magnetically attracted to the third magnet block, a first switch button arranged at the other end of the first operating rod, a second operating rod eccentrically fixed on the turntable and one end of which passes through the slider, a second electromagnet arranged at one end of the second operating rod and magnetically attracted to the fourth magnet block, and a second switch button arranged at the other end of the second operating rod.

7. A high temperature environment conductor conductivity testing device according to claim 6, characterized in that: The cleaning assembly includes several groups of cleaning wheels symmetrically arranged on the hollow gantry through a mounting frame and in contact with the conductor, cleaning strips arranged on the cleaning wheels along the circumferential direction, a third gear rotatably arranged on the mounting frame and driving the cleaning wheels through a transmission method of a sprocket and a chain, and a second rack arranged on the base plate through a vertical rod and used to drive the third gear.

8. A high temperature environment conductor conductivity testing device according to claim 7, characterized in that: The conductive clamp is electrically connected to the conductive terminal of the semicircular hollow clamp through a wire, a current and voltage measuring instrument is arranged on the wire connecting the conductive clamp and the conductive terminal, and a heat-insulating transparent window is arranged on the side wall of the high-temperature chamber.

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