A detection device for a flexible heat-conductive composite material

Abstract

The utility model discloses a kind of detection device of flexible heat-conducting composite material, the utility model relates to fabric heat conductivity detection technical field.This detection device of flexible heat-conducting composite material includes support frame, the top of support frame is provided with detection mechanism, for detecting the heat conduction efficiency of composite material, the detection mechanism includes: limiting component, set in the top of support frame, for limiting test sample;Heating assembly, including fixedly installed in the center of support frame electric push rod, the upper end of electric push rod is fixedly installed with movable frame, the both sides of movable frame are movably installed with limiting roller, the heat generated by mica heating sheet is evenly transmitted to fabric by heat spreading plate, avoid uneven heating, reduce the time wasted due to heating problem, mica heating sheet directly contact heat transfer with fabric through heat spreading plate, compared with the mode of traditional heat transfer through box side wall, greatly reduce the heat loss to air, improve heating efficiency.

Description

Technical Field

[0001] This utility model relates to the field of fabric thermal conductivity testing technology, specifically a testing device for flexible thermally conductive composite materials. Background Technology

[0002] Thermal conductivity testing of composite materials is a key step in evaluating the heat transfer capability of composite materials. Its core functions revolve around four dimensions: material performance verification, application adaptability, safety assurance, and R&D optimization. It directly affects the design, production, and service reliability of composite materials in various industrial fields.

[0003] The existing utility model patent with publication number CN223037858U discloses a thermal conductivity testing device for antibacterial cooling fabric. The device includes a base, a heating chamber, an antibacterial cooling fabric fixing bracket, and a thermal conductivity detection chamber. The heating chamber is fixed to the upper side of the base. The lower end of the antibacterial cooling fabric fixing bracket is detachably mounted on the upper end of the heating chamber, and the lower end of the thermal conductivity detection chamber is detachably mounted on the upper end of the antibacterial cooling fabric fixing bracket. The thermal conductivity detection chamber and the heating chamber are connected by a locking mechanism. A first thermocouple is installed inside the heating chamber, and a second thermocouple is installed inside the thermal conductivity detection chamber. This utility model heats the lower heating chamber space with an infrared heater and separates the lower heating chamber from the upper thermal conductivity detection chamber with the antibacterial cooling fabric. The thermal conductivity of the antibacterial cooling fabric is determined by monitoring the real-time performance of the thermal conductivity detection chamber, thus achieving the detection of the thermal conductivity of the antibacterial cooling fabric.

[0004] The aforementioned testing device cannot maintain the relative pressure between the heat source and the test object during the test, which affects the heat transfer efficiency. At the same time, the heat generated during the use of the heat source will be conducted into the air through the side wall of the heat conduction box, resulting in a reduction in heating efficiency and directly affecting the testing efficiency. In addition, in order to ensure that the contact surface between the fabric and the heat source is relatively flat, the fabric needs to be kept taut during the fixing process, which is inconvenient to operate. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a testing device for flexible thermally conductive composite materials, which solves the problems of low testing efficiency and inconvenient fabric fixation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A testing device for flexible thermally conductive composite materials includes a support frame, and a testing mechanism is provided on the top of the support frame for testing the thermal conductivity of the composite material. The testing mechanism includes:

[0007] A limiting component, located above the support frame, is used to limit the test sample;

[0008] The heating assembly includes an electric push rod fixedly installed at the center of a support frame, a movable frame fixedly installed at the upper end of the electric push rod, limit rollers movably installed on both sides of the movable frame, a heat spreader plate fitted into the front of the top of the movable frame, a mica heating element fixedly installed below the heat spreader plate, a base plate fixedly installed at the bottom of the movable frame, and guide rods fixedly installed at the four corners of the bottom of the movable frame.

[0009] An infrared temperature measurement module, located on the top of the support frame, is used to detect the temperature of the composite material.

[0010] Preferably, the limiting component includes connecting columns that are inserted and installed on the top left and right sides of the front and rear ends of the support frame. A limiting rod is fixedly installed on one side of the connecting column. Adjusting bolts are installed at the top of the vertical structures on the front and rear sides of the support frame. A guide column is inserted and installed on the top of the support frame. A support spring is sleeved on the outside of the guide column. A pressure plate is fixedly installed at the bottom of the guide column.

[0011] Preferably, the connecting column is rotatably connected to the support frame, the limiting rod is horizontally and symmetrically installed between the connecting columns on the front and rear sides of the support frame, and the adjusting bolt is connected to the support frame through a threaded structure, with its bottom end contacting the surface of the connecting column.

[0012] Preferably, the guide post and the support frame are slidably connected, the support spring is located between the top horizontal structure of the support frame and the pressure plate, the pressure plate is slidably connected to the support frame through the guide post, and the top of the guide post is provided with a disc-shaped protrusion.

[0013] Preferably, the limiting roller and the movable frame are rotatably connected, the front and rear sides of the movable frame are provided with chamfered structures, and the surface of the movable frame is provided with a notch that fits into the heat spreader.

[0014] Preferably, the area of ​​the heat spreader plate is the same as the area of ​​the mica heating element, the mica heating element is located between the heat spreader plate and the base plate, the bottom end of the guide rod is provided with a disc-shaped protrusion, and the guide rod and the support frame are slidably connected.

[0015] Beneficial effects

[0016] This invention provides a testing device for flexible thermally conductive composite materials. Compared with the prior art, it has the following advantages:

[0017] (1) When fixing the fabric, the testing device for the flexible thermal conductive composite material first adjusts the rotation damping of the connecting column by adjusting the bolt, then passes the two ends of the fabric through the limiting rod between the connecting columns, and rotates the connecting column to quickly fix the two ends of the fabric without complicated operation; if the tension of the fabric needs to be adjusted, the connecting column only needs to be rotated slightly, without repeated disassembly and reassembly; when the movable frame moves the fabric upward, the limiting rollers on both sides can make the fabric bends transition smoothly, avoiding damage to the fabric due to creases caused by bending; at the same time, the support spring on the outside of the guide column will apply downward pressure to the pressure plate, so that the pressure plate and the heat dissipation plate on the movable frame cooperate to clamp the fabric, which not only ensures that the fabric is in close contact with the heat source, but also eliminates the need for manual and laborious clamping, further simplifying the fixing process.

[0018] (2) In the heating process of the testing device for the flexible thermally conductive composite material, the heat generated by the mica heating plate is evenly transferred to the fabric through the heat spreader, avoiding uneven heating caused by local heat concentration or dispersion, and reducing the time wasted due to heating problems; when the electric push rod pushes the movable frame to move, the guide rod at the bottom of the movable frame will slide along the support frame to ensure the stable movement of the movable frame, so that the heat spreader can quickly cooperate with the pressure plate to clamp the fabric, reducing the time spent on manual adjustment of alignment; the mica heating plate directly contacts the fabric through the heat spreader, which greatly reduces the heat loss to the air compared with the traditional method of heat transfer through the side wall of the box, and improves the heating efficiency; in addition, the infrared temperature measurement module can present the fabric temperature distribution and thermal conductivity in the form of a thermal map in real time, and quickly output thermal conductivity data, without waiting for a long time to summarize temperature data, further accelerating the testing process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the installation structure of the limiting rod of this utility model;

[0021] Figure 3 This is a schematic diagram of the support spring mounting structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the mica heating element installation structure of this utility model;

[0023] In the diagram: 1. Support frame; 2. Detection mechanism; 21. Limiting component; 211. Connecting column; 212. Limiting rod; 213. Adjusting bolt; 214. Guide column; 215. Support spring; 216. Pressure plate; 22. Heating component; 221. Electric push rod; 222. Movable frame; 223. Limiting roller; 224. Heat spreader plate; 225. Mica heating element; 226. Base plate; 227. Guide rod; 23. Infrared temperature measurement module. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4 This utility model provides a technical solution: a testing device for flexible thermally conductive composite materials includes a support frame 1, and a testing mechanism 2 is provided on the top of the support frame 1 for testing the thermal conductivity of the composite material. The testing mechanism 2 includes:

[0026] A limiting component 21, located above the support frame 1, is used to limit the test sample. The limiting component 21 includes connecting posts 211 inserted into the top left and right sides of the front and rear ends of the support frame 1. A limiting rod 212 is fixedly installed on one side of each connecting post 211. Adjusting bolts 213 are installed at the top of the vertical structures on the front and rear sides of the support frame 1. A guide post 214 is inserted into the top of the support frame 1. A support spring 215 is sleeved on the outside of the guide post 214. A pressure plate 216 is fixedly installed at the bottom of the guide post 214. 11 is rotatably connected to the support frame 1. The limiting rod 212 is horizontally and symmetrically installed between the connecting columns 211 on the front and rear sides of the support frame 1. The adjusting bolt 213 is connected to the support frame 1 through a threaded structure, and its bottom end is in contact with the surface of the connecting column 211. The guide column 214 is slidably connected to the support frame 1. The support spring 215 is located between the top horizontal structure of the support frame 1 and the pressure plate 216. The pressure plate 216 is slidably connected to the support frame 1 through the guide column 214. The top of the guide column 214 is provided with a disc-shaped protrusion.

[0027] Specifically, the rotational damping of the connecting column 211 is adjusted by rotating the adjusting bolt 213. One end of the sample is passed through the space between the limiting rods 212, and then the connecting column 211 is rotated to fix one end of the sample to the outside of the limiting rods 212, thereby limiting the position of both ends of the sample. The tension of the sample can also be adjusted by rotating the connecting column 211. The guide column 214 can limit the movement direction of the pressure plate 216, and the disc-shaped protrusion at the top can prevent the guide column 214 from slipping. The support spring 215 can provide downward pressure to the pressure plate 216 after compression.

[0028] The heating assembly 22 includes an electric push rod 221 fixedly installed at the center of the support frame 1. A movable frame 222 is fixedly installed at the upper end of the electric push rod 221. Limiting rollers 223 are movably installed on both sides of the movable frame 222. A heat spreader 224 is fitted into the front of the top of the movable frame 222. A mica heating element 225 is fixedly installed below the heat spreader 224. A base plate 226 is fixedly installed at the bottom of the movable frame 222. Guide rods 227 are fixedly installed at the four corners of the bottom of the movable frame 222. The limiting roller 223 is rotatably connected to the movable frame 222. The movable frame 222 has chamfered structures on its front and rear sides. The surface of the movable frame 222 has a notch that fits into the heat spreader 224. The area of ​​the heat spreader 224 is the same as the area of ​​the mica heating plate 225. The mica heating plate 225 is located between the heat spreader 224 and the base plate 226. The bottom end of the guide rod 227 has a disc-shaped protrusion. The guide rod 227 is slidably connected to the support frame 1.

[0029] Infrared temperature measurement module 23 is located on the top of support frame 1 and is used to detect the temperature of composite material.

[0030] Specifically, the electric actuator 221 can drive the movable frame 222 to move upward. The limiting rollers 223 on both sides of the movable frame 222 can make the bending of the sample smooth and prevent the sample from being damaged by obvious creases. When the electric actuator 221 drives the movable frame 222 to move upward, since the two ends of the sample are fixed, the center of the sample moves upward under the drive of the movable frame 222 until the heat spreader 224 and the pressure plate 216 clamp the sample. During the upward movement of the movable frame 222, the sample will be tightened first, and then the connecting column 211 will be rotated to prevent the sample from being overstretched. The heat generated by the mica heating plate 225 can be transferred to the sample through the heat spreader 224. The heat transfer rate of the sample is reflected in the form of a thermogram by the infrared temperature measurement module 23. At the same time, the contents not described in detail in this specification are all prior art known to those skilled in the art.

[0031] During operation, first rotate the adjusting bolt 213 to adjust the rotation damping of the connecting column 211. Pass one end of the flexible thermally conductive composite material sample to be tested through the limiting rod 212 between the front and rear connecting columns 211 in the limiting assembly 21 above the support frame 1. Rotate the connecting column 211 to fix one end of the sample, and similarly fix the other end. Next, activate the electric push rod 221 in the heating assembly 22. The electric push rod 221 pushes the movable frame 222 upwards. The limiting rollers 223 on both sides of the movable frame 222 move with it, ensuring a smooth transition at the bending point of the sample. The guide rods 227 at the four corners of the bottom of the movable frame 222 slide along the support frame 1 to ensure stable movement of the movable frame 222. 222 continues to move upward, causing the center of the sample to bulge, first tightening the sample. If the tension is too large, the connecting column 211 will rotate slightly to avoid excessive stretching of the sample, until the heat spreader 224 embedded on the top surface of the movable frame 222 and the pressure plate 216 at the bottom of the guide column 214 in the limiting component 21 clamp the sample. At this time, the support spring 215 on the outside of the guide column 214 is compressed and provides downward pressure to the pressure plate 216. Then, the mica heating plate 225 below the heat spreader 224 is activated, and the heat generated is evenly transferred to the sample through the heat spreader 224. The infrared temperature measurement module 23 at the top of the support frame 1 detects the sample temperature in real time and reflects the sample thermal conductivity in the form of a thermal image, thus completing the detection.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A testing device for flexible thermally conductive composite materials, comprising a support frame (1), characterized in that: The top of the support frame (1) is provided with a detection mechanism (2) for detecting the thermal conductivity of the composite material. The detection mechanism (2) includes: A limiting component (21) is disposed above the support frame (1) to limit the test sample; The heating assembly (22) includes an electric push rod (221) fixedly installed at the center of the support frame (1). A movable frame (222) is fixedly installed at the upper end of the electric push rod (221). Limiting rollers (223) are movably installed on both sides of the movable frame (222). A heat spreader plate (224) is fitted into the front of the top of the movable frame (222). A mica heating plate (225) is fixedly installed below the heat spreader plate (224). A base plate (226) is fixedly installed at the bottom of the movable frame (222). Guide rods (227) are fixedly installed at the four corners of the bottom of the movable frame (222). An infrared temperature measurement module (23) is installed on the top of the support frame (1) and is used to detect the temperature of the composite material.

2. The testing device for flexible thermally conductive composite materials according to claim 1, characterized in that: The limiting component (21) includes connecting columns (211) that are inserted and installed on the top left and right sides of the front and rear ends of the support frame (1). A limiting rod (212) is fixedly installed on one side of the connecting column (211). Adjusting bolts (213) are installed at the top of the vertical structure on the front and rear sides of the support frame (1). A guide column (214) is inserted and installed on the top of the support frame (1). A support spring (215) is sleeved on the outside of the guide column (214). A pressure plate (216) is fixedly installed at the bottom of the guide column (214).

3. The testing device for flexible thermally conductive composite materials according to claim 2, characterized in that: The connecting column (211) and the support frame (1) form a rotatable connection. The limiting rod (212) is horizontally and symmetrically installed between the connecting columns (211) on the front and rear sides of the support frame (1). The adjusting bolt (213) is connected to the support frame (1) through a threaded structure, and its bottom end contacts the surface of the connecting column (211).

4. The testing device for flexible thermally conductive composite materials according to claim 2, characterized in that: The guide post (214) and the support frame (1) are connected in a sliding manner. The support spring (215) is located between the top horizontal structure of the support frame (1) and the pressure plate (216). The pressure plate (216) is connected in a sliding manner with the support frame (1) through the guide post (214). The top of the guide post (214) is provided with a disc-shaped protrusion.

5. The testing device for flexible thermally conductive composite materials according to claim 1, characterized in that: The limiting roller (223) and the movable frame (222) are rotatably connected. The movable frame (222) has chamfered structures on its front and rear sides and notches on its surface that fit into the heat spreader (224).

6. The testing device for flexible thermally conductive composite materials according to claim 1, characterized in that: The area of ​​the heat spreader (224) is the same as that of the mica heating plate (225). The mica heating plate (225) is located between the heat spreader (224) and the base plate (226). The bottom end of the guide rod (227) is provided with a disc-shaped protrusion. The guide rod (227) and the support frame (1) form a sliding connection.

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