Continuous detection heat conductivity coefficient tester for heat-conducting impregnated canvas

Abstract

The utility model discloses a continuous detection heat conductivity coefficient determinator for heat conduction gum dipping canvas, which relates to the technical field of heat conductivity coefficient detection, and comprises a detection table, two symmetrically arranged placing assemblies are arranged at the top of the detection table, and pressing assemblies are arranged on the placing assemblies. A detection assembly is slidably arranged on the detection table through an adjusting assembly. After a single sample disc is measured, the lifting table is reset, the first handle is rotated, and the connecting rod is driven to move towards the detection table, so that the lengthening rod and the sliding block are driven to move in the movable groove, the lifting table on the guide rod is moved to the position above the left side placing assembly, and the sample disc to be detected is placed on the left side placing assembly; and the first step and the second step of detection are repeated, so that the next sample disc can be detected without waiting for natural cooling of the heat dissipation copper disc on the right placement assembly, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal conductivity detection, in particular to a thermal conductivity measuring instrument for continuous detection of heat-conducting rubber-impregnated canvas. Background Art

[0002] Thermal conductivity refers to the ability of a material to conduct heat directly. The thermal conductivity of thermally conductive impregnated canvas directly affects its performance. A thermal conductivity meter is needed to test its thermal conductivity to ensure product quality.

[0003] When using the existing thermal conductivity coefficient measuring instrument, the first step is to place the impregnated canvas sample between the heating plate and the heat dissipation copper plate. After the temperatures on the heating plate and the heat dissipation copper plate reach the steady-state temperature, remove the impregnated canvas sample. The second step is to remove the impregnated canvas sample and then detect the heat dissipation rate of the heat dissipation copper plate at the steady-state temperature value. Finally, the thermal conductivity of the impregnated canvas sample is calculated through the relevant formula.

[0004] In practice, it is often necessary to test multiple dipped canvas samples in order to improve the accuracy of the data. After measuring a single dipped canvas, it is necessary to wait for the heat dissipation copper disk to cool down and then measure again to ensure the accuracy of the measurement result. However, the cooling time of the heat dissipation copper disk is usually long, resulting in low detection efficiency. Therefore, it is necessary to propose a continuous detection thermal conductivity coefficient meter for thermally conductive dipped canvas to solve the above problem. Utility Model Content

[0005] The purpose of the utility model is to provide a continuous detection thermal conductivity coefficient measuring instrument for heat-conductive impregnated canvas, so as to solve the above-mentioned problem that after the existing continuous detection thermal conductivity coefficient measuring instrument for heat-conductive impregnated canvas measures a single impregnated canvas, it is necessary to wait for the heat dissipation copper disk to cool down and then measure again to ensure the accuracy of the measurement result, but the cooling time of the heat dissipation copper disk is usually long, which leads to low detection efficiency.

[0006] To achieve the above-mentioned object, the utility model provides the following technical solution: a thermal conductivity coefficient measuring instrument for continuous detection of thermally conductive impregnated canvas, comprising a detection platform, the top of which is provided with two symmetrically arranged placement components, the placement components are provided with a pressing component, and the detection component is also slidably provided on the detection platform via an adjustment component;

[0007] The adjustment component includes a movable groove, two of which are symmetrically arranged, and the placement component is located in the middle of the two movable grooves. A slider is slidingly arranged in the movable groove, a guide rod is fixedly arranged on the top of the slider, and an extension rod is fixedly arranged on the end of the slider. A connecting rod is fixedly connected between one end of the two extension rods that are movably extended from the end of the detection platform, and a screw rod is rotatably arranged at the end of the detection platform. A screw hole is arranged in the middle of the connecting rod, and the screw hole and the screw rod cooperate with each other. A first handle is fixedly arranged on the end of the screw rod away from the detection platform.

[0008] Preferably, the detection component includes a lifting platform, and lifting holes are provided at both ends of the lifting platform, and the lifting holes are adapted to the guide rods. Threaded holes that are interconnected with the lifting holes are also provided at both ends of the lifting platform, and bolts are connected to the threads in the threaded holes. A heater is provided in the middle of the top of the lifting platform, and a heating plate is provided in the middle of the bottom of the lifting platform. A first socket is provided at the outer circle of the heating plate, and a sample plate and a heat dissipation copper plate that are movable and fitted to each other are provided in sequence below the heating plate, and the centers of the heating plate, sample plate and heat dissipation copper plate are on the same vertical line, and a second socket is provided at the outer circle of the heat dissipation copper plate.

[0009] Preferably, the placement assembly includes support rods, three of which are evenly distributed in a ring shape, the support rods are fixed on the testing table, a supporting ring is fixed on the top of the support rod, the interior of the supporting ring is set into a circular hollow structure, and three limiting rods evenly distributed in a ring shape are fixed on the top of the supporting ring, and the limiting rods are movably fitted with the heat dissipation copper plate.

[0010] Preferably, the clamping assembly includes a mounting ring, which is fixedly mounted on the lower end of the inner ring of the guide rod, and a first gear is rotatably provided at the outer ring of the mounting ring, and three second gears evenly distributed in a ring are meshed and connected at the outer ring of the first gear, and a second handle is fixedly provided at the bottom of one of the second gears, and a sleeve rod is fixedly provided on the top of the second gear, and the sleeve rod is rotatably connected to the supporting ring through a bearing, and a threaded rod is threadedly connected to the inner thread of the sleeve rod, and a clamping plate is fixedly provided at one end of the threaded rod that is movably extended out of the sleeve rod, and two symmetrically arranged telescopic rods are provided between the clamping plate and the supporting ring.

[0011] Preferably, an air vent is provided on the top of the test bench, a dustproof net is provided inside the air vent, the centers of the air vent, the supporting ring and the heat dissipation copper plate are on the same vertical line, and a heat dissipation fan is provided inside the test bench below the air vent.

[0012] Preferably, the horizontal distance from the pressing plate to the center of the supporting ring is smaller than the horizontal distance from the limiting rod to the center of the supporting ring.

[0013] Preferably, the lifting platform is provided with a connection port electrically connected to the heater, the second socket and the first socket are respectively plugged with the second thermometer probe and the first thermometer probe, and the second thermometer probe, the first thermometer probe and the connection port are all electrically connected to the external controller.

[0014] The technical effects and advantages of this utility model are:

[0015] 1. By adjusting the components, there is no need to wait for the heat dissipation copper plate on the right side of the component to cool naturally before testing the next sample plate, which improves the testing efficiency;

[0016] 2. By installing the clamping assembly, the tightness of the connection between the heating plate, sample plate and heat dissipation copper plate is improved, thereby improving the accuracy of the test results. In addition, by installing the three clamping plates, the bottom of the heat dissipation copper plate receives a balanced thrust, which levels the heat dissipation copper plate and avoids tilting that affects the tightness of the connection with the sample plate.

[0017] 3. After starting the cooling fan, the external wind blows upward through the air outlet, and then takes away the heat on the heat dissipation copper plate through the circular hollow structure, thereby improving the heat dissipation efficiency of the heat dissipation copper plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a thermal conductivity coefficient measuring instrument for continuous detection of thermal conductive impregnated canvas in the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the adjustment component of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the components of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the compression assembly of the utility model;

[0022] Figure 5 It is an enlarged schematic diagram of the local structure of the pressing component of the present invention.

[0023] In the figure: 1. Testing table; 2. Movable slot; 3. Slider; 4. Guide rod; 5. Lifting platform; 6. Bolt; 7. Extension rod; 8. Connecting rod; 9. First handle; 10. Screw; 11. Heater; 12. Heating plate; 13. Support rod; 14. Support ring; 15. Limit rod; 16. Mounting ring; 17. First gear; 18. Second gear; 19. Second handle; 20. Bearing; 21. Sleeve rod; 22. Threaded rod; 23. Pressure plate; 24. Telescopic rod; 25. Sample plate; 26. Heat dissipation copper plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] The utility model provides Figure 1-Figure 5 The thermal conductivity coefficient measuring instrument shown is used for continuous detection of heat-conductive impregnated canvas, including a detection platform 1, on which a detection component is provided. The thermal conductivity coefficient of the impregnated canvas sample is measured by the detection component.

[0026] The detection component includes a lifting platform 5, which has lifting holes at both ends of the lifting platform 5. A guide rod 4 is movably provided inside the lifting hole. The guide rod 4 is installed on the top of the detection platform 1. Threaded holes that are interconnected with the lifting holes are also provided at both ends of the lifting platform 5. Bolts 6 are threadedly connected to the threaded holes. A heater 11 is provided in the middle of the top of the lifting platform 5, and a heating plate 12 is provided in the middle of the bottom of the lifting platform 5. A first socket is provided at the outer circle of the heating plate 12. A sample plate 25 and a heat dissipation copper plate 26 that are movable and fit together are provided below the heating plate 12 in sequence. The centers of the heating plate 12, the sample plate 25 and the heat dissipation copper plate 26 are on the same vertical line. A second socket is provided at the outer circle of the heat dissipation copper plate 26. A connection port electrically connected to the heater 11 is provided on the lifting platform 5. The second socket and the first socket are respectively plugged with a second thermometer probe and a first thermometer probe. The second thermometer probe, the first thermometer probe and the connection port are all electrically connected to an external controller.

[0027] When in use, install the second thermometer probe and the first thermometer probe in place. Before inserting them into the second socket and the first socket respectively, apply thermal grease first to improve the accuracy of temperature detection. The first step is to start the heater 11 through the external controller to heat the heating plate 12. When the temperatures on the heating plate 12 and the heat dissipation copper plate 26 reach the steady-state temperature, rotate the two bolts 6 synchronously to cancel the restriction of the lifting platform 5 on the guide rod 4, and then pull up the bolt 6 to separate the heating plate 12 and the sample plate 25 and the heat dissipation copper plate 26. Reverse the bolt 6 to fix the position of the lifting platform 5 and remove the sample plate 25. The second step is to reverse the operation to press the heating plate 12 and the heat dissipation copper plate 26 together, detect the heat dissipation rate of the heat dissipation copper plate 26 at the steady-state temperature value, and finally calculate the thermal conductivity of the sample plate 25 through the relevant formula.

[0028] In order to ensure that the heat dissipation copper plate 26 has good heat dissipation efficiency and does not come into direct contact with the test platform 1 to avoid the test platform 1 being burned, a placement component is provided on the top of the test platform 1. The placement component includes a support rod 13. There are three support rods 13 and they are evenly distributed in a ring shape. The support rod 13 is fixed on the test platform 1. A supporting ring 14 is fixed on the top of the support rod 13. The interior of the supporting ring 14 is set to a circular hollow structure. Three limiting rods 15 evenly distributed in a ring shape are fixed on the top of the supporting ring 14. The limiting rods 15 and the heat dissipation copper plate 26 are movably fitted together, so that the heat dissipation copper plate 26 is stuck on the inner ring of the three limiting rods 15, fixing the position of the heat dissipation copper plate 26 to avoid sliding displacement during testing. At the same time, the supporting ring 14 can support the heat dissipation copper plate 26 to avoid the test platform 1 being burned. The heat dissipation efficiency of the heat dissipation copper plate 26 is improved by the setting of the support rod 13 and the circular hollow structure.

[0029] Taking into account that in practice, it is often necessary to test multiple sample trays 25 in order to improve the accuracy of the data, after measuring a single sample tray 25, it is necessary to wait for the heat dissipation copper tray 26 to cool down and then measure again to ensure the accuracy of the measurement result. However, the cooling time of the heat dissipation copper tray 26 is usually long, resulting in low detection efficiency. Therefore, two placement components are provided in the utility model, and the detection component is slidably connected to the detection platform 1 through an adjustment component.

[0030] The adjusting assembly includes a movable slot 2, which is symmetrically provided with two movable slots 2. The placement assembly is located in the middle of the two movable slots 2. A slider 3 is slidingly provided in the movable slot 2. A guide rod 4 is fixedly provided on the top of the slider 3. An extension rod 7 is fixedly provided at the end of the slider 3. A connecting rod 8 is fixedly connected between one end of the two extension rods 7 that movably extends out of the end of the detection platform 1. A screw rod 10 is rotatably provided at the end of the detection platform 1. A wire hole is provided in the middle of the connecting rod 8, and the wire hole and the screw rod 10 cooperate. A first handle 9 is fixedly provided at the end of the screw rod 10 away from the detection platform 1. After measuring a single sample tray 25, the lifting platform 5 is reset, and the first handle 9 is rotated to drive the connecting rod 8 to move toward the detection platform 1, thereby driving the extension rod 7 and the slider 3 to move in the movable slot 2, and moving the lifting platform 5 on the guide rod 4 to the top of the left placement assembly. The sample tray 25 to be tested is placed on the left placement assembly, and the first and second steps of the test are repeated. Therefore, there is no need to wait for the heat dissipation copper plate 26 on the right placement assembly to cool naturally before the next sample tray 25 can be tested, thereby improving the detection efficiency.

[0031] In order to ensure a tight connection between the heating plate 12, the sample plate 25 and the heat dissipation copper plate 26, a clamping assembly is provided on the placement assembly, and the clamping assembly includes a mounting ring 16, which is fixedly mounted on the lower end of the inner ring of the guide rod 4, and a first gear 17 is rotatably provided on the outer ring of the mounting ring 16. Three second gears 18 uniformly distributed in an annular shape are meshed and connected at the outer ring of the first gear 17. A second handle 19 is fixedly provided at the bottom of one of the second gears 18, and a sleeve rod 21 is fixedly provided on the top of the second gear 18. The sleeve rod 21 is rotatably connected to the supporting ring 14 through a bearing 20. A threaded rod 22 is connected to the inner thread of the sleeve rod 21, and a clamping plate 23 is fixed on one end of the threaded rod 22 that movably extends out of the sleeve rod 21, and a clamping plate 23 is provided between the clamping plate 23 and the supporting ring 14. Two symmetrically arranged telescopic rods 24, when the heating plate 12 is fitted on the upper surface of the sample plate 25, rotate the second handle 19 to drive the second gear 18 fixedly connected thereto to rotate, thereby driving the first gear 17 to rotate, driving the other two second gears 18 to rotate synchronously, and finally driving the sleeve rod 21 to rotate. With the assistance of the telescopic rod 24, the threaded rod 22 and the clamping plate 23 move upward, pressing the sample plate 25 between the heating plate 12 and the heat dissipation copper plate 26, thereby improving the tightness of the connection between the heating plate 12, the sample plate 25 and the heat dissipation copper plate 26, and improving the accuracy of the test results. In addition, through the installation of the three clamping plates 23, the bottom of the heat dissipation copper plate 26 receives a balanced thrust, which levels the heat dissipation copper plate 26 and avoids the influence of tilt and the tightness of the connection of the sample plate 25.

[0032] Furthermore, in order to allow the heat dissipation copper plate 26 to dissipate heat quickly, an air vent is opened on the top of the test bench 1, and a dustproof net is set inside the air vent. The centers of the air vent, the supporting ring 14 and the heat dissipation copper plate 26 are on the same vertical line. A heat dissipation fan is set below the air vent and located inside the test bench 1. After the heat dissipation fan is started, the external wind blows upward through the air vent, and then takes away the heat on the heat dissipation copper plate 26 through the circular hollow structure.

[0033] It should be noted that the horizontal distance from the clamping plate 23 to the center of the supporting ring 14 is smaller than the horizontal distance from the limit rod 15 to the center of the supporting ring 14. With this arrangement, under the thrust of the clamping plate 23, the heat dissipation copper plate 26 is displaced in the vertical direction to avoid offset.

Claims

1. A thermal conductivity measuring instrument for continuous detection of thermally conductive impregnated canvas, comprising a detection table (1), characterized in that: The top of the detection platform (1) is provided with two symmetrically arranged placement components, the placement components are provided with a pressing component, and the detection platform (1) is also provided with a detection component slidably arranged through an adjustment component; The adjustment component comprises a movable groove (2), two movable grooves (2) are symmetrically arranged, and the placement component is located in the middle of the two movable grooves (2). A slider (3) is slidably arranged in the movable groove (2), a guide rod (4) is fixedly arranged on the top of the slider (3), an extension rod (7) is fixedly arranged at the end of the slider (3), a connecting rod (8) is fixedly connected between the ends of the two extension rods (7) that are movably extended from the ends of the detection platform (1), a screw rod (10) is rotatably arranged at the end of the detection platform (1), a screw hole is arranged in the middle of the connecting rod (8), the screw hole and the screw rod (10) are matched, and a first handle (9) is fixedly arranged at the end of the screw rod (10) away from the detection platform (1).

2. The continuous detection thermal conductivity tester for heat-conductive impregnated canvas according to claim 1, characterized in that: The detection component includes a lifting platform (5), wherein both ends of the lifting platform (5) are provided with lifting holes, and the lifting holes are adapted to the guide rod (4). Both ends of the lifting platform (5) are also provided with threaded holes interconnected with the lifting holes, and bolts (6) are connected to the threaded holes. A heater (11) is provided in the middle of the top of the lifting platform (5), and a heating plate (12) is provided in the middle of the bottom of the lifting platform (5). A first socket is provided at the outer circle of the heating plate (12), and a sample plate (25) and a heat dissipation copper plate (26) that are movable and fitted with each other are provided in sequence below the heating plate (12). The centers of the heating plate (12), the sample plate (25) and the heat dissipation copper plate (26) are on the same vertical line, and a second socket is provided at the outer circle of the heat dissipation copper plate (26).

3. The continuous detection thermal conductivity tester for heat-conductive impregnated canvas according to claim 2, characterized in that: The placement assembly includes a support rod (13), three support rods (13) are provided and are evenly distributed in a ring shape, the support rod (13) is fixedly provided on the detection table (1), a supporting ring (14) is fixedly provided on the top of the support rod (13), the interior of the supporting ring (14) is provided in a circular hollow structure, and three limiting rods (15) evenly distributed in a ring shape are fixedly provided on the top of the supporting ring (14), and the limiting rods (15) are movably fitted with the heat dissipation copper plate (26).

4. The continuous detection thermal conductivity tester for heat-conductive impregnated canvas according to claim 3, characterized in that: The clamping assembly includes a mounting ring (16), which is fixedly mounted on the lower end of the inner ring of the guide rod (4); a first gear (17) is rotatably arranged on the outer ring of the mounting ring (16); three second gears (18) uniformly distributed in an annular shape are meshed and connected on the outer ring of the first gear (17); a second handle (19) is fixedly arranged on the bottom of one of the second gears (18); a sleeve rod (21) is fixedly arranged on the top of the second gear (18); the sleeve rod (21) is rotatably connected to the supporting ring (14) through a bearing (20); a threaded rod (22) is internally threadedly connected to the sleeve rod (21); a clamping plate (23) is fixedly arranged on one end of the threaded rod (22) that movably extends out of the sleeve rod (21); two symmetrically arranged telescopic rods (24) are arranged between the clamping plate (23) and the supporting ring (14).

5. The continuous detection thermal conductivity tester for heat-conductive impregnated canvas according to claim 4, characterized in that: The top of the test bench (1) is provided with an air vent, a dustproof net is provided inside the air vent, the centers of the air vent, the supporting ring (14) and the heat dissipation copper plate (26) are on the same vertical line, and a heat dissipation fan is provided inside the test bench (1) below the air vent.

6. The thermal conductivity measuring instrument for continuous detection of thermally conductive impregnated canvas according to claim 5, characterized in that: The horizontal distance between the pressing plate (23) and the center of the supporting ring (14) is smaller than the horizontal distance between the limiting rod (15) and the center of the supporting ring (14).

7. The continuous detection thermal conductivity tester for heat-conductive impregnated canvas according to claim 2, characterized in that: The lifting platform (5) is provided with a connection port electrically connected to the heater (11); the second socket and the first socket are respectively plugged with a second thermometer probe and a first thermometer probe; the second thermometer probe, the first thermometer probe and the connection port are all electrically connected to an external controller.

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