Molybdenum-copper alloy heat-conducting property testing device

Abstract

The invention relates to the technical field of alloy heat-conducting property testing, in particular to a molybdenum-copper alloy heat-conducting property testing device which comprises a collecting box, a supporting frame is fixedly installed at the upper end of the collecting box, a supporting plate is detachably installed at the upper end of the collecting box, a lifting plate is arranged above the supporting plate, and the lifting plate is slidably connected with the supporting frame. A plurality of heat preservation face shells are fixedly installed at the inner end of the supporting plate, a plurality of sealing covers are fixedly installed at the bottom end of the lifting plate, and suspension devices are installed in the sealing covers. When the samples with different heat-conducting properties are collected, the suspension device is triggered to automatically clamp and fix the samples, the heat-conducting property of the samples reaches the standard, and if clamping is not triggered within the specified time, the samples fall into the collection box under the action of gravity, so that the samples with different heat-conducting properties are automatically distinguished and classified.

Description

Technical Field

[0001] This invention relates to the field of alloy thermal conductivity testing technology, specifically to a device for testing the thermal conductivity of molybdenum-copper alloys. Background Technology

[0002] Molybdenum-copper alloys have wide applications in fields such as heat dissipation of electronic devices, aerospace, and high-temperature structural materials due to their excellent thermal conductivity and good mechanical strength. Molybdenum-copper alloys not only combine the high melting point and good mechanical properties of molybdenum, but also the excellent thermal conductivity of copper, thus becoming an important material for manufacturing high-performance heat dissipation devices.

[0003] A search revealed that prior art publication number CN115184404B discloses a testing device for the thermal conductivity of molybdenum-copper alloys, belonging to the technical field of testing thermal conductivity of molybdenum-copper alloys. The device includes a test stand with a heating cavity on its front side, a sealing cover plate rotatably connected to the front side of the test stand, and several sealing and fixing units arranged in a circular array on the sealing cover plate, which sequentially pass through the heating cavity during the rotation of the sealing cover plate. A limiting and fixing component is provided on the test stand to fix the sealing cover plate at specific points. This design places the heated end of the test piece in a sealed environment, reducing heat loss during heating and increasing the speed at which the molybdenum-copper alloy reaches the preset heating temperature, thereby improving testing efficiency.

[0004] Therefore, based on the above search and combined with existing technologies, existing molybdenum-copper alloy thermal conductivity testing devices mostly rely on sensor detection or manual monitoring of sample temperature changes during heating. After the test is completed, the test results need to be judged manually and the samples need to be sorted. After the performance test is completed, qualified and unqualified samples need to be separated directly after the test. This not only increases the manual intervention, but also causes unqualified samples to occupy equipment space if they are not removed in time, and they are also easy to be mixed with good products, thus affecting the overall testing efficiency. Therefore, this application proposes a molybdenum-copper alloy thermal conductivity testing device. Summary of the Invention

[0005] The purpose of this invention is to provide a device for testing the thermal conductivity of molybdenum-copper alloys, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a testing device for the thermal conductivity of molybdenum-copper alloy, comprising a collection box, a support frame fixedly installed at the upper end of the collection box, a support plate detachably installed at the upper end of the collection box, and a lifting plate provided above the support plate. The lifting plate is slidably connected to the support frame. Multiple insulation shells are fixedly installed at the inner end of the support plate, and multiple sealing covers are fixedly installed at the bottom end of the lifting plate, with the sealing covers corresponding to the insulation shells. A heating shell is detachably installed inside the insulation shell, and the molybdenum-copper alloy to be tested is disposed inside the heating shell. A suspension device is installed inside the sealing cover, which lifts up the qualified molybdenum-copper alloy. An extension rod is slidably installed on the outer surface of the support plate.

[0007] As a further embodiment of the present invention, the outer surface of the heating shell is provided with a plurality of rectangular holes, each of which is provided with a support shell arranged in a ring. A heating coil is fixedly installed at the inner end of the heating shell for heating the molybdenum-copper alloy. The heat generated by the heating coil after being energized is transferred to the outer surface of the molybdenum-copper alloy, thereby achieving heating. A counterweight is rotatably installed at the inner end of the support shell, and a drag hook is fixedly connected to the outer surface of the counterweight, which lifts the molybdenum-copper alloy.

[0008] As a further embodiment of the present invention, a passive ring is rotatably mounted on the outer surface of the heating shell, a toothed ring is fixedly mounted on the inner end of the passive ring, a passive gear is rotatably mounted on the inner end of the support shell, and the passive gear meshes with the toothed ring. A protrusion is fixedly mounted on the outer surface of the passive gear, and the outer surface of the protrusion is in contact with the upper end of the counterweight.

[0009] As a further embodiment of the present invention, the suspension device includes a pressure cylinder, which is fixedly installed at the inner end of the sealing cover. A support cylinder is fixedly installed at the bottom end of the pressure cylinder, and the outer surface of the support cylinder is provided with a plurality of annularly arranged through holes. An inner support block is inserted into each through hole. After the support cylinder is inserted into the interior of the molybdenum-copper alloy, the inner support block moves radially outward and contacts the inner wall of the molybdenum-copper alloy, thereby clamping and fixing the molybdenum-copper alloy through friction.

[0010] As a further embodiment of the present invention, an outer ring is sleeved on the inner end of the support cylinder, and an inner ring is sleeved inside the outer ring. A central rod passes through the inner ring, and an arc-shaped plate is fixedly installed on the outer surface of the outer ring. The outer surface of the arc-shaped plate is in contact with the inner support block. When the outer ring rotates, the arc-shaped plate rotates with it and pushes the inner support block to move away from the outer ring.

[0011] As a further embodiment of the present invention, a conductive bladder is fixedly connected to the end of the support cylinder away from the pressure cylinder. The conductive bladder is provided with a plurality of memory metal sheets arranged in a ring. A guide ring is fixedly installed at the bottom end of the central rod, and the memory metal sheets are fixedly connected to the guide ring.

[0012] As a further embodiment of the present invention, a passive plug is sleeved on the inner end of the pressure cylinder. The bottom end of the passive plug contacts the upper end of the central rod. When the central rod moves, it pushes the passive plug to move. Multiple guide plates are fixedly installed on the outer surface of the inner ring, and the guide plates pass through the interior of the inner support block. The guide plates and the inner support block are connected by a return spring. By driving the passive plug to move through the central rod, the force transmission to the inner ring can be realized. At the same time, with the cooperation of the guide plates and the return spring, the inner support block maintains stable guidance and automatic reset during the movement. This not only ensures the smoothness and reliability of the movement, but also effectively improves the reset efficiency and service life of the device.

[0013] As a further embodiment of the present invention, an air cylinder is installed on the outer surface of the heat insulation shell, a movable rod is inserted through the inner end of the air cylinder, a pressure plug is fixedly installed on the outer surface of the movable rod, and the pressure plug is located inside the air cylinder. The pressure plug and the air cylinder are connected by an auxiliary spring. Multiple push plates are rotatably installed on the outer surface of the extension rod through a rotating shaft, and the push plates are positioned corresponding to each heat insulation shell. An auxiliary sleeve is provided on the left side of the push plate, and the auxiliary sleeve is fixedly connected to the extension rod.

[0014] As a further embodiment of the present invention, an abutment block is provided through the inner end of the auxiliary sleeve, and the outer surface of the abutment block contacts the outer surface of the push plate. Under the limitation of the abutment block, the push plate cannot rotate in the direction of the auxiliary sleeve. By limiting the push plate by the abutment block, unnecessary rotation of the push plate in the direction of the auxiliary sleeve is effectively avoided, thereby ensuring the stability of the force direction of the push plate and improving the reliability and safety of the device during operation.

[0015] As a further embodiment of the present invention, a reset plate is fixedly installed on the outer surface of the movable rod. The reset plate is located to the left of the push plate and is arranged in an alternating manner with the push plate. A limit plate is rotatably installed on the inner end of the auxiliary sleeve. The limit plate is perpendicular to the abutment block. Under the restriction of the limit plate, the abutment block cannot move into the auxiliary sleeve. A passive rod is rotatably installed on the upper end of the auxiliary sleeve. The passive rod is fixedly connected to the limit plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This application utilizes the thermal deformation of shape memory metal sheets to trigger a suspension device. If the molybdenum-copper alloy can effectively transfer heat to the shape memory metal sheet within a limited time and trigger the suspension device to automatically clamp and fix it, it indicates that its thermal conductivity meets the standard. If clamping is not triggered within the specified time, the sample will fall into the collection box under the action of gravity, thereby realizing the automatic identification and classification of samples with different thermal conductivity. It can complete the detection and sorting without manual intervention, which is simple to operate, has high detection efficiency, and the classification results are intuitive and reliable. 2. This application can not only automatically determine the thermal conductivity of molybdenum-copper alloys during the testing process, but also automatically sort the samples directly after the determination. The test results are presented in an intuitive way through "clamping" and "dropping", making the determination process simple and reliable. At the same time, when the sample does not meet the thermal conductivity requirements, it can automatically fall into the collection box, effectively avoiding the occupation of equipment and interference with subsequent tests. After the test is completed, the classification can be completed automatically without manual intervention. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a testing device for the thermal conductivity of molybdenum-copper alloy. Figure 2 This is a structural diagram of the support plate and the collection box; Figure 3 This is a top view of the sealing cap; Figure 4 This is a schematic diagram of the internal structure of the thermal insulation shell; Figure 5 This is a schematic diagram of the internal structure of the heating element shell; Figure 6 This is a schematic diagram of the internal structure of the supporting shell; Figure 7 This is a schematic diagram of the internal structure of the sealing cap; Figure 8 This is a schematic diagram of the internal structure of the pressure cylinder and the support cylinder; Figure 9 This is a breakdown diagram of the outer and inner rings; Figure 10 This is a schematic diagram of the internal structure of the air cylinder; Figure 11 This is a schematic diagram of the internal structure of the abutment block.

[0018] In the diagram: 1. Collection box; 2. Support frame; 3. Support plate; 4. Lifting plate; 11. Molybdenum-copper alloy; 12. Heating coil; 101. Insulation shell; 102. Heating shell; 103. Passive ring; 104. Support shell; 105. Tow hook; 106. Counterweight; 107. Passive gear; 201. Sealing cap; 202. Pressure cylinder; 203. Passive block; 204. Support cylinder; 205. Conductive bladder; 206. Passive plug; 207. Unlocking ring; 208. Center rod; 209. Inner support block; 210. Inner ring; 211. Memory metal sheet; 212. Guide ring; 213. Outer ring; 214. Locking plate; 215. Auxiliary torsion spring; 216. Locking sleeve; 217. Guide plate; 218. Return spring; 301. Electric actuator; 302. Extension rod; 303. Air cylinder; 304. Conducting tube; 305. Pressure plug; 306. Auxiliary spring; 307. Movable rod; 308. Reset plate; 309. Push plate; 310. Passive rod; 311. Auxiliary sleeve; 312. Limiting plate; 313. Abutment block. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figure 1 - Figure 5 A testing device for the thermal conductivity of molybdenum-copper alloy includes a collection box 1, a support frame 2 fixedly installed on the upper end of the collection box 1 by bolts, a support plate 3 detachably installed on the upper end of the collection box 1 by bolts, and a lifting plate 4 provided above the support plate 3. The lifting plate 4 and the support frame 2 are slidably connected by a slide rail. Multiple heat-insulating shells 101 are fixedly installed on the inner end of the support plate 3 to prevent internal heat loss. Multiple sealing covers 201 are fixedly installed on the bottom end of the lifting plate 4, and the sealing covers 201 correspond to the heat-insulating shells 101. A heating shell 102 is detachably installed inside the heat-insulating shell 101. The heating shell 102 contains a molybdenum-copper alloy 11 to be tested (such as...). Figure 5 As shown), a suspension device is installed inside the sealing cover 201. The suspension device lifts the qualified molybdenum copper alloy 11. An extension rod 302 (not shown in the figure) is slidably installed on the outer surface of the support plate 3. Specifically, the upper end of the collection box 1 is equipped with an operation terminal, which has operating programs such as temperature control and time control, and is used to realize real-time test control under different test conditions. The specific working principle is a mature existing technology, which will not be elaborated here. The inner end of the support plate 3 is fixedly installed with an electric push rod 301 (not shown in the figure) by a clamp, and the telescopic end of the electric push rod 301 is fixedly connected to the extension rod 302.

[0021] like Figure 4 - Figure 6 As shown, the outer surface of the heating shell 102 has multiple rectangular holes, and each rectangular hole has a support shell 104 arranged in a ring. The inner end of the heating shell 102 is fixedly installed with a heating coil 12 for heating the molybdenum-copper alloy 11. The heat generated by the heating coil 12 after being energized is transferred to the outer surface of the molybdenum-copper alloy 11, thereby achieving heating. The inner end of the support shell 104 is rotatably installed with a counterweight 106 through a rotating shaft, and the outer surface of the counterweight 106 is fixedly connected with a hook 105, which lifts the molybdenum-copper alloy 11. Specifically, the tow hook 105 is located inside the heating shell 102, and its bottom end is triangular. When the molybdenum-copper alloy 11 is placed at the bottom end of the tow hook 105, under its own gravity, the gravity acts on the inclined surface of the triangular block at the bottom end of the tow hook 105, thereby generating a force that causes the tow hook 105 to rotate toward the heating shell 102. More specifically, when the tow hook 105 is unloaded, its own weight and the counterweight 106 balance each other, so that the tow hook 105 always remains in a vertical position. A passive ring 103 is rotatably mounted on the outer surface of the heating shell 102. A toothed ring is fixedly mounted on the inner end of the passive ring 103. A passive gear 107 is rotatably mounted on the inner end of the support shell 104, and the passive gear 107 meshes with the toothed ring. A protrusion is fixedly mounted on the outer surface of the passive gear 107, and the outer surface of the protrusion is in contact with the upper end of the counterweight 106. Specifically, when the passive ring 103 rotates, it drives the passive gear 107 to rotate through the gear ring. As the passive gear 107 rotates, the protrusion no longer keeps in contact with the upper end of the counterweight 106, thus releasing the restriction on the counterweight 106 and allowing the counterweight 106 to rotate freely.

[0022] Example 2: Please refer to Figure 3 , Figure 7 - Figure 9 A testing device for the thermal conductivity of molybdenum-copper alloy, based on Embodiment 1, includes a suspension device comprising a pressure cylinder 202, which is fixedly installed at the inner end of a sealing cover 201. A support cylinder 204 is fixedly installed at the bottom end of the pressure cylinder 202, and the outer surface of the support cylinder 204 is provided with a plurality of annularly arranged through holes. An inner support block 209 is inserted into each through hole. After the support cylinder 204 is inserted into the interior of the molybdenum-copper alloy 11, the inner support block 209 moves radially outward and contacts the inner wall of the molybdenum-copper alloy 11, thereby clamping and fixing the molybdenum-copper alloy 11 through friction. Specifically, the outer surface of the inner support block 209 has a rectangular anti-slip surface, which can effectively increase the friction when in contact with the inner wall of the molybdenum-copper alloy 11.

[0023] like Figure 8 , Figure 9As shown, an outer ring 213 is fitted inside the inner end of the support cylinder 204, and an inner ring 210 is fitted inside the outer ring 213. A central rod 208 passes through the inner ring 210. An arc-shaped plate is fixedly installed on the outer surface of the outer ring 213. The outer surface of the arc-shaped plate is in contact with the inner support block 209. When the outer ring 213 rotates, the arc-shaped plate rotates with it and pushes the inner support block 209 to move away from the outer ring 213. A conduction bladder 205 is fixedly connected to one end of the support cylinder 204 away from the pressure cylinder 202. The conduction bladder 205 has multiple memory metal sheets 211 inside, which are arranged in a ring. A guide ring 212 is fixedly installed at the bottom of the central rod 208, and the memory metal sheets 211 are fixedly connected to the guide ring 212. Specifically, the conduction capsule 205 is made of soft silicone, which has excellent fatigue resistance and heat resistance. The memory metal sheet 211 will deform under high temperature. Its default state is a bent shape. When it is heated and deformed, it will push the central rod 208 to move upward.

[0024] A locking sleeve 216 is fitted on the outer surface of the center rod 208. The locking sleeve 216 is fixedly connected to the inner ring 210, while the inner ring 210 and the outer ring 213 are engaged by an auxiliary torsion spring 215. A locking plate 214 is fitted on the outer surface of the center rod 208. The lower end of the locking plate 214 and the upper end of the inner ring 210 and the outer ring 213 are fixedly equipped with locking teeth. After the locking plate 214 moves downward, the locking teeth at its lower end engage with the locking teeth of the inner ring 210 and the outer ring 213, preventing the inner ring 210 from rotating. At this time, the outer ring 213 also cannot rotate (the auxiliary torsion spring 215 is in a stored state by default). Multiple unlocking rings 207 are fixedly installed on the upper end of the locking plate 214. The unlocking rings 207 are arranged in a ring shape, while multiple passive blocks 203 are fixedly installed on the outer surface of the center rod 208. The passive blocks 203 pass through the inside of the unlocking rings 207. Specifically, the inner diameter of the unlocking rings 207 is larger than the outer diameter of the passive blocks 203, so that the passive blocks 203 can move a short distance within the limited space inside the unlocking rings 207 (providing a certain amount of room for movement of the shape memory metal sheet 211 when it is heated, and preventing it from driving the center rod 208 to move when it is not heated).

[0025] A passive plug 206 is sleeved on the inner end of the pressure cylinder 202. The bottom end of the passive plug 206 contacts the upper end of the center rod 208. When the center rod 208 moves, it pushes the passive plug 206 to move. Multiple guide plates 217 are fixedly welded to the outer surface of the inner ring 210. The guide plates 217 pass through the inside of the inner support block 209. The guide plates 217 and the inner support block 209 are connected by a return spring 218. Under the elastic force of the return spring 218, the inner support block 209 can always be kept in the current position. The outer surface of the outer ring 213 has multiple rectangular holes, and the guide plate 217 passes through the rectangular holes. The rotation angle of the outer ring 213 is limited by the size of the rectangular holes, so it cannot complete a full rotation.

[0026] Example 3: Please refer to Figure 3 , Figure 4 , Figure 10 , Figure 11 A molybdenum-copper alloy thermal conductivity testing device, based on embodiments 1 and 2, has an air cylinder 303 installed on the outer surface of the insulation shell 101 by clamps. The air cylinder 303 is connected to the pressure cylinder 202 by a conduction pipe 304, which is a high-pressure resistant hose. A movable rod 307 is inserted through the inner end of the air cylinder 303. A pressure plug 305 is fixedly installed on the outer surface of the movable rod 307 by bolts, and the pressure plug 305 is located inside the air cylinder 303. The pressure plug 305 is connected to the air cylinder 303 by an auxiliary spring 306. Multiple push plates 309 are rotatably installed on the outer surface of the extension rod 302 by a rotating shaft, and the push plates 309 correspond to the positions of each insulation shell 101. An auxiliary sleeve 311 is provided on the left side of the push plate 309, and the auxiliary sleeve 311 is fixedly connected to the extension rod 302. An abutment block 313 is provided at the inner end of the auxiliary sleeve 311. The outer surface of the abutment block 313 contacts the outer surface of the push plate 309. Under the limitation of the abutment block 313, the push plate 309 cannot rotate in the direction of the auxiliary sleeve 311. A protruding plate is fixedly installed on the outer surface of the passive ring 103. The outer surface of the protruding plate keeps in contact with the push plate 309. When the push plate 309 moves, it pushes the protruding plate and drives the passive ring 103 to rotate. A reset plate 308 is fixedly installed on the outer surface of the movable rod 307. The reset plate 308 is located to the left of the push plate 309 and is arranged in an alternating manner with the push plate 309. A limit plate 312 is rotatably installed on the inner end of the auxiliary sleeve 311. The limit plate 312 is perpendicular to the abutment block 313. Under the restriction of the limit plate 312, the abutment block 313 cannot move into the auxiliary sleeve 311. A passive rod 310 is rotatably installed on the upper end of the auxiliary sleeve 311. The passive rod 310 is fixedly connected to the limit plate 312. Specifically, the passive rod 310 forms an angle with the limiting plate 312, and the end of the passive rod 310 corresponds to the reset plate 308. When the reset plate 308 moves toward the auxiliary sleeve 311, it will contact the end of the passive rod 310. As the reset plate 308 continues to move, it will drive the passive rod 310 to rotate and drive the limiting plate 312 to rotate. At this time, the abutment block 313 will have enough room to move, and the push plate 309 will no longer be limited by the abutment block 313 and will retract into the interior of the auxiliary sleeve 311. The passive rod 310 and the auxiliary sleeve 311 are connected by a spring clip, and the push plate 309 and the extension rod 302 are connected by a spring clip. It is worth noting that the extension plate on the outer surface of the passive ring 103 is located between the push plate 309 and the reset plate 308.

[0027] The working principle of this invention is: Lift the sealing cover 201 by lifting plate 4, place the molybdenum-copper alloy 11 to be tested inside the heating shell 102, and close the sealing cover 201. Then, the heating temperature and heating time are set by the operation terminal. The heating coil 12 heats the molybdenum-copper alloy 11. When the heat is transferred from the molybdenum-copper alloy 11 to the memory metal sheet 211, the memory metal sheet 211 deforms due to heat and drives the central rod 208 to move upward through the guide ring 212. As the central rod 208 moves upward, it also drives the locking plate 214 to move. At this time, the outer ring 213 rotates under the elastic force of the auxiliary torsion spring 215. During the rotation of the outer ring 213, the inner support block 209 is pushed away from the support cylinder 204 by the arc plate and clamps the inner wall of the molybdenum-copper alloy 11. At the same time, as the center rod 208 moves upward, it drives the passive plug 206 to move upward, the internal pressure of the pressure cylinder 202 increases, and the pressure is transmitted to the inside of the air cylinder 303 through the transmission pipe 304, so that the movable rod 307 pushes the reset plate 308 to move away from the push plate 309. When testing the thermal conductivity of the molybdenum-copper alloy 11, its temperature transfer efficiency needs to be monitored within a specified time. After the test time is up, the telescopic end of the electric push rod 301 pushes the extension rod 302. When the extension rod 302 moves, it pushes the convex plate on the outer surface of the passive ring 103 through the push plate 309, causing the convex plate to drive the passive ring 103 to rotate. During the rotation of the passive ring 103, the passive gear 107 is driven to rotate through the gear ring. Subsequently, the convex block no longer keeps in contact with the upper end of the counterweight block 106, thus releasing the restriction on the counterweight block 106. At this time, under its own gravity, the molybdenum-copper alloy 11 acts on the inclined surface of the triangular block at the bottom of the hook 105, thereby generating a force that causes the hook 105 to rotate toward the heating shell 102. If the molybdenum-copper alloy 11 is heated and successfully causes the shape memory metal sheet 211 to deform within a limited time, then the molybdenum-copper alloy 11 will be suspended inside the heating shell 102. If the molybdenum-copper alloy 11 cannot transfer heat to the shape memory metal sheet 211, then the inner support block 209 cannot act inside the molybdenum-copper alloy 11, and the molybdenum-copper alloy 11 will fall into the collection box 1 under the action of gravity. Then, the lifting plate 4 is raised to remove the qualified molybdenum-copper alloy 11. Subsequently, the shape memory metal sheet 211 moves downwards during the recovery process. At this time, the movable rod 307 gradually returns to its initial state under the elastic force of the auxiliary spring 306, causing the passive plug 206 to return to its initial state. During the reset process of the movable rod 307, it pushes the convex plate on the outer surface of the passive ring 103, and then contacts the end of the passive rod 310 during the movement. With the continued movement of the reset plate 308, the passive rod 310 is driven to rotate, which in turn drives the limiting plate 312 to rotate. At this time, the abutment block 313... With sufficient room to move, the push plate 309 is no longer limited by the abutment block 313 and retracts into the interior of the auxiliary sleeve 311, allowing the convex plate to pass over the push plate 309. Then, the electric push rod 301 drives the extension rod 302 to reset. During the reset process, the push plate 309 will pass over the convex plate again. At this time, the convex plate is again located between the push plate 309 and the reset plate 308. Then, the center rod 208 is pushed through the conduction bag 205, so that the locking plate 214 no longer engages with the outer ring 213 and the locking sleeve 216, and the support cylinder 204 is rotated to reset the auxiliary torsion spring 215.

[0028] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for testing the thermal conductivity of molybdenum-copper alloy, comprising a collection box (1), characterized in that: A support frame (2) is fixedly installed on the upper end of the collection box (1). A support plate (3) is detachably installed on the upper end of the collection box (1). A lifting plate (4) is provided above the support plate (3). The lifting plate (4) is slidably connected to the support frame (2). Multiple heat-insulating shells (101) are fixedly installed on the inner end of the support plate (3). Multiple sealing covers (201) are fixedly installed on the bottom end of the lifting plate (4). The sealing covers (201) correspond to the heat-insulating shells (101). A heating shell (102) is detachably installed inside the heat-insulating shells (101). The molybdenum-copper alloy (11) to be tested is provided inside the heating shells (102). A suspension device is installed inside the sealing cover (201). The suspension device lifts up the qualified molybdenum-copper alloy (11). An extension rod (302) is slidably installed on the inner end of the support plate (3).

2. The molybdenum-copper alloy thermal conductivity testing device according to claim 1, characterized in that: The outer surface of the heating shell (102) is provided with multiple rectangular holes, and each rectangular hole is provided with a support shell (104). The support shell (104) is arranged in a ring shape. A heating coil (12) is fixedly installed at the inner end of the heating shell (102). The heat generated by the heating coil (12) after being energized is transferred to the outer surface of the molybdenum-copper alloy (11) to achieve heating. A counterweight (106) is rotatably installed at the inner end of the support shell (104), and a tow hook (105) is fixedly connected to the outer surface of the counterweight (106). The tow hook (105) lifts the molybdenum-copper alloy (11).

3. The molybdenum-copper alloy thermal conductivity testing device according to claim 2, characterized in that: A passive ring (103) is rotatably mounted on the outer surface of the heating shell (102). A toothed ring is fixedly mounted on the inner end of the passive ring (103). A passive gear (107) is rotatably mounted on the inner end of the support shell (104), and the passive gear (107) meshes with the toothed ring. A protrusion is fixedly mounted on the outer surface of the passive gear (107), and the outer surface of the protrusion is in contact with the upper end of the counterweight (106).

4. The molybdenum-copper alloy thermal conductivity testing device according to claim 1, characterized in that: The suspension device includes a pressure cylinder (202), which is fixedly installed on the inner end of the sealing cover (201). A support cylinder (204) is fixedly installed at the bottom end of the pressure cylinder (202). The outer surface of the support cylinder (204) is provided with a plurality of annularly arranged through holes. An inner support block (209) is inserted into each through hole. After the support cylinder (204) is inserted into the molybdenum-copper alloy (11), the inner support block (209) moves radially outward and contacts the inner wall of the molybdenum-copper alloy (11). The molybdenum-copper alloy (11) is clamped and fixed by friction.

5. The molybdenum-copper alloy thermal conductivity testing device according to claim 4, characterized in that: The inner end of the support cylinder (204) is fitted with an outer ring (213), and an inner ring (210) is fitted inside the outer ring (213). A central rod (208) passes through the inner ring (210). An arc plate is fixedly installed on the outer surface of the outer ring (213). The outer surface of the arc plate is in contact with the inner support block (209). When the outer ring (213) rotates, the arc plate rotates with it and pushes the inner support block (209) to move away from the outer ring (213).

6. The molybdenum-copper alloy thermal conductivity testing device according to claim 5, characterized in that: The support cylinder (204) is fixedly connected to a conduction bladder (205) at one end away from the pressure cylinder (202). The conduction bladder (205) is provided with a plurality of memory metal sheets (211) arranged in a ring. A guide ring (212) is fixedly installed at the bottom end of the central rod (208), and the memory metal sheets (211) are fixedly connected to the guide ring (212).

7. The molybdenum-copper alloy thermal conductivity testing device according to claim 6, characterized in that: The inner end of the pressure cylinder (202) is fitted with a passive plug (206). The bottom end of the passive plug (206) contacts the upper end of the center rod (208). When the center rod (208) moves, it pushes the passive plug (206) to move. Multiple guide plates (217) are fixedly installed on the outer surface of the inner ring (210). The guide plates (217) pass through the interior of the inner support block (209). The guide plates (217) and the inner support block (209) are connected by a return spring (218).

8. The molybdenum-copper alloy thermal conductivity testing device according to claim 1, characterized in that: An air cylinder (303) is installed on the outer surface of the insulation shell (101). A movable rod (307) is inserted through the inner end of the air cylinder (303). A pressure plug (305) is fixedly installed on the outer surface of the movable rod (307), and the pressure plug (305) is located inside the air cylinder (303). The pressure plug (305) and the air cylinder (303) are connected by an auxiliary spring (306). Multiple push plates (309) are rotatably installed on the outer surface of the extension rod (302), and the push plates (309) correspond to the positions of each insulation shell (101). An auxiliary sleeve (311) is provided on the left side of the push plate (309), and the auxiliary sleeve (311) is fixedly connected to the extension rod (302).

9. The molybdenum-copper alloy thermal conductivity testing device according to claim 8, characterized in that: The inner end of the auxiliary sleeve (311) is provided with an abutment block (313). The outer surface of the abutment block (313) contacts the outer surface of the push plate (309). Under the limitation of the abutment block (313), the push plate (309) cannot rotate in the direction of the auxiliary sleeve (311).

10. The molybdenum-copper alloy thermal conductivity testing device according to claim 9, characterized in that: A reset plate (308) is fixedly installed on the outer surface of the movable rod (307). The reset plate (308) is located to the left of the push plate (309) and is staggered with the push plate (309). A limit plate (312) is rotatably installed on the inner end of the auxiliary sleeve (311). The limit plate (312) is perpendicular to the abutment block (313). Under the restriction of the limit plate (312), the abutment block (313) cannot move into the auxiliary sleeve (311). A passive rod (310) is rotatably installed on the upper end of the auxiliary sleeve (311). The passive rod (310) is fixedly connected to the limit plate (312).

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