A device for measuring the thermal conductivity of synthetic diamond raw materials

Abstract

This utility model discloses a device for measuring the thermal conductivity of synthetic diamond raw materials, which relates to the field of synthetic diamond technology. It includes a worktable with a support fixed to its bottom. A groove is provided on the worktable, and a limiting mechanism is located inside the groove. A measuring box is placed inside the limiting mechanism within the groove. A through hole is provided on the side of the measuring box, and a heating mechanism is located on the side of the through hole. A stop bar is slidably connected to the bottom of the measuring box, and a temperature measuring mechanism is located on the side of the stop bar away from the measuring box. The temperature measuring mechanism is adjustable in height along the support. This device combines multiple gradient measurement data, improving accuracy. Furthermore, the overall measurement structure has a high degree of mechanization and high measurement efficiency. It can perform multiple measurements at different temperatures, making it convenient to operate.

Description

Technical Field

[0001] This utility model belongs to the field of synthetic diamond technology, and in particular relates to a device for measuring the thermal conductivity of synthetic diamond raw materials. Background Technology

[0002] Existing synthetic diamond thermal conductivity measuring devices can generally only measure thermal conductivity at a fixed depth, resulting in limited data, inability to perform multiple measurements, data errors, and the need to frequently change different batches of samples, which is time-consuming, labor-intensive, and inefficient. There may already be technical solutions that address the above-mentioned technical problems. Therefore, this paper aims to provide a replacement or alternative technical solution. Utility Model Content

[0003] The purpose of this invention is to provide a device for measuring the thermal conductivity of synthetic diamond raw materials. This device combines multiple gradient measurement data to improve accuracy, and the overall measurement structure has a high degree of mechanization and high measurement efficiency. It can perform multiple measurements at different temperatures and is easy to operate.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A device for measuring the thermal conductivity of synthetic diamond raw materials includes a worktable with a support fixed to the bottom of the worktable. The worktable has a groove with a through slot at the bottom. A limiting mechanism is provided inside the groove, and a measuring box is placed inside the limiting mechanism. A through hole is provided on the side of the measuring box, and a heating mechanism is provided on the side of the through hole. A stop bar is slidably connected to the bottom of the measuring box, and a temperature measuring mechanism is provided on the side of the stop bar away from the measuring box. The temperature measuring mechanism can be raised and lowered along the height direction of the support.

[0005] Furthermore, the limiting mechanism includes a placement groove disposed inside the workbench, one side of the placement groove being connected to the outside of the workbench and the other side being connected to the inside of the groove. A connecting frame is slidably connected inside the placement groove, and a clamping strip is fixed to the connecting frame facing the end of the groove. The clamping strips are symmetrically arranged, and a first cylinder is connected to the side of the connecting frame away from the clamping strip. The first cylinder is installed on the side of the workbench.

[0006] Furthermore, a first sealing film is fixed inside the through hole, and the first sealing film has an opening.

[0007] Furthermore, the heating mechanism includes a guide block fixed inside the groove. A first push rod and a second push rod are slidably connected inside the guide block. The first push rod is located above the second push rod. A heating rod is screwed to the end of the first push rod facing the through hole. The first push rod corresponds to the position of the through hole, and the heating rod has the same size as the through hole. The second push rod corresponds to the position of the stop bar. A fixing plate is fixed to the ends of the first push rod and the second push rod away from the guide block. A second cylinder is connected to the other side of the fixing plate. The second cylinder is installed on the side of the worktable.

[0008] Furthermore, the length difference between the second push rod and the first push rod is consistent with the length of the stop bar.

[0009] Furthermore, a second sealing film is provided above the baffle strip, and the second sealing film is fixed to the bottom of the measuring box. The measuring box is hollowed out at the position of the second sealing film.

[0010] Furthermore, the temperature measuring mechanism includes a fixed base plate, inside which are fixed a plurality of temperature detection probes are equidistantly arranged. The fixed base plate is located below the limiting mechanism. A connecting block is fixed at one end of the fixed base plate, and a guide rod is provided inside the connecting block. The guide rod is fixed between the worktable and the support. The connecting block slides along the outside of the guide rod. A third cylinder is connected to the other end of the fixed base plate, and the bottom of the third cylinder is installed inside the support.

[0011] In summary, the beneficial technical effects of this utility model are as follows: the measurement structure of this device combines multiple gradient measurement data, which improves accuracy; the overall measurement structure has a high degree of mechanization and high measurement efficiency; it can perform multiple measurements at different temperatures and is convenient to operate. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of a device for measuring the thermal conductivity of synthetic diamond raw materials in this embodiment; Figure 2 This embodiment describes a device for measuring the thermal conductivity of synthetic diamond raw materials. Figure 1 Side view; Figure 3 This is a schematic diagram of the internal working table of a device for measuring the thermal conductivity of synthetic diamond raw materials according to this embodiment. Figure 4 This is a schematic diagram of the measuring box structure of a synthetic diamond raw material thermal conductivity measuring device according to this embodiment.

[0013] In the diagram: 1. Workbench; 2. Support; 3. Groove; 4. Measuring box; 5. Through hole; 6. Stop bar; 7. Placement slot; 8. Connecting frame; 9. Clamping bar; 10. First cylinder; 11. First sealing film; 12. Guide block; 13. First push rod; 14. Second push rod; 15. Heating rod; 16. Fixing plate; 17. Second cylinder; 18. Second sealing film; 19. Fixing base plate; 20. Temperature detection probe; 21. Connecting block; 22. Guide rod; 23. Third cylinder; 24. Through slot. Detailed Implementation

[0014] The present invention will be further described in detail below with reference to the accompanying drawings.

[0015] 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.

[0016] Please see Figure 1-4 This utility model provides a technical solution: a device for measuring the thermal conductivity of synthetic diamond raw materials, including a workbench 1, a support 2 fixed at the bottom of the workbench 1, a groove 3 on the workbench 1, a through groove 24 at the bottom of the groove 3, a limiting mechanism inside the groove 3, a measuring box 4 placed inside the limiting mechanism, a through hole 5 on the side of the measuring box 4, a heating mechanism on the side of the through hole 5, a baffle 6 slidably connected to the bottom of the measuring box 4, a temperature measuring mechanism on the side of the baffle 6 away from the measuring box 4, and the temperature measuring mechanism can be adjusted up and down along the height direction of the support 2.

[0017] In this embodiment, the measuring box 4 is used to place synthetic diamond raw materials, press the raw materials into the measuring box 4 for measurement, and multiple measuring boxes 4 can be selected for use for the same batch of products, thereby facilitating multiple measurements and improving measurement accuracy.

[0018] The limiting mechanism includes a placement groove 7 set inside the workbench 1. One side of the placement groove 7 is connected to the outside of the workbench 1, and the other side is connected to the inside of the groove 3. A connecting frame 8 is slidably connected inside the placement groove 7. A clamping strip 9 is fixed to the end of the connecting frame 8 facing the groove 3. The clamping strips 9 are symmetrically arranged. A first cylinder 10 is connected to the side of the connecting frame 8 away from the clamping strip 9. The first cylinder 10 is installed on the side of the workbench 1.

[0019] The limiting mechanism uses two clamping bars 9 for limiting. The distance between the two clamping bars 9 is the same as the length of the measuring box 4. At the same time, the position of the two clamping bars 9 in the lateral direction remains unchanged. Thus, when clamped on the measuring box 4, the position of the measuring box 4 remains unchanged, which facilitates the temperature measuring mechanism at the bottom to perform measurement.

[0020] A first sealing membrane 11 is fixed inside the through hole 5, and the first sealing membrane 11 has an opening.

[0021] The heating mechanism includes a guide block 12 fixed inside the groove 3. A first push rod 13 and a second push rod 14 are slidably connected inside the guide block 12. The first push rod 13 is located above the second push rod 14. A heating rod 15 is screwed to the end of the first push rod 13 facing the through hole 5. The first push rod 13 corresponds to the position of the through hole 5. The heating rod 15 has the same size as the through hole 5. The second push rod 14 corresponds to the position of the stop bar 6. A fixing plate 16 is fixed to the ends of the first push rod 13 and the second push rod 14 away from the guide block 12. A second cylinder 17 is connected to the other side of the fixing plate 16. The second cylinder 17 is installed on the side of the worktable 1.

[0022] The length difference between the second push rod 14 and the first push rod 13 is the same as the length of the stop bar 6.

[0023] After the measuring box 4 is installed, the second cylinder 17 is opened. The second cylinder 17 drives the fixing plate 16 to move toward the end of the measuring box 4, which in turn drives the first push rod 13 and the second push rod 14 to move toward the end of the measuring box 4. The second push rod 14 is longer, so the second push rod 14 first contacts the side of the baffle 6, pushes the baffle, and opens the baffle 6. At the same time, a second sealing film 18 is provided above the baffle 6. The second sealing film 18 is fixed to the bottom of the measuring box 4. The measuring box 4 is in a hollow state at the position of the second sealing film 18, so that the second sealing film 18 is exposed.

[0024] Secondly, the heating rod 15 at the front end of the first push rod 13 enters the through hole 5. After entering the through hole 5, it enters the measuring box 4 through the opening in the first sealing film 11. The heating rod 15 is kept open at the same time, and its temperature is controlled to be stable at a certain value. Specifically, the heating temperature of the heating rod 15 can be controlled. In this embodiment, the heating rod 15 is a conventional resistance heating rod 15, which has the function of adjusting the temperature value.

[0025] After the heating rod 15 enters, it conducts heat to the raw material inside along the inner side of the measuring box 4, and then the heat begins to be conducted.

[0026] The temperature measuring mechanism includes a fixed base plate 19, inside which are fixed a plurality of temperature detection probes 20. The temperature detection probes 20 are equidistantly arranged. The fixed base plate 19 is located below the limiting mechanism. Specifically, the temperature detection probes 20 correspond to the positions of the through slots 24 so that the temperature detection probes 20 can enter the measuring box 4. A connecting block 21 is fixed to one end of the fixed base plate 19. A guide rod 22 is provided inside the connecting block 21. The guide rod 22 is fixed between the worktable 1 and the bracket 2. The connecting block 21 slides along the outside of the guide rod 22. A third cylinder 23 is connected to the other end of the fixed base plate 19. The bottom of the third cylinder 23 is installed inside the bracket 2.

[0027] In the length direction of the measuring box 4, the third cylinder 23 is opened, and the third cylinder 23 drives the fixed base plate 19 to move upward. The temperature detection probe 20 on the fixed base plate 19 is inserted along the second sealing film 18. After insertion, all the temperature detection probes 20 enter the interior of the measuring box 4, and the temperature can be detected synchronously in the temperature conduction extension direction. The temperature at different positions is obtained through the temperature detection probes 20, and the temperature conduction efficiency is obtained, thereby obtaining the thermal conductivity.

[0028] 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.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A synthetic diamond feedstock thermal conductivity measurement apparatus, characterised in that, The device includes a workbench (1), a support (2) fixed at the bottom of the workbench (1), a groove (3) on the workbench (1), a through groove (24) at the bottom of the groove (3), a limiting mechanism inside the groove (3), a measuring box (4) placed inside the groove (3) inside the limiting mechanism, a through hole (5) on the side of the measuring box (4), a heating mechanism on the side of the through hole (5), a baffle (6) slidably connected to the bottom of the measuring box (4), a temperature measuring mechanism on the side of the baffle (6) away from the measuring box (4), and the temperature measuring mechanism can be adjusted up and down along the height direction of the support (2).

2. The apparatus for measuring thermal conductivity of a synthetic diamond feedstock according to claim 1, wherein The limiting mechanism includes a placement groove (7) set inside the workbench (1). One side of the placement groove (7) is connected to the outside of the workbench (1), and the other side is connected to the inside of the groove (3). A connecting frame (8) is slidably connected inside the placement groove (7). A clamping strip (9) is fixed to the end of the connecting frame (8) facing the groove (3). The clamping strips (9) are symmetrically arranged. A first cylinder (10) is connected to the side of the connecting frame (8) away from the clamping strips (9). The first cylinder (10) is installed on the side of the workbench (1).

3. The apparatus for measuring thermal conductivity of a synthetic diamond feedstock according to claim 1, wherein The through hole (5) has a first sealing film (11) fixed inside, and the first sealing film (11) has an opening.

4. The apparatus for measuring thermal conductivity of a synthetic diamond feedstock according to claim 1, wherein The heating mechanism includes a guide block (12) fixed inside the groove (3). A first push rod (13) and a second push rod (14) are slidably connected inside the guide block (12). The first push rod (13) is located above the second push rod (14). A heating rod (15) is screwed to the end of the first push rod (13) facing the through hole (5). The first push rod (13) corresponds to the position of the through hole (5). The heating rod (15) is the same size as the through hole (5). The second push rod (14) corresponds to the position of the stop bar (6). A fixing plate (16) is fixed to the ends of the first push rod (13) and the second push rod (14) away from the guide block (12). A second cylinder (17) is connected to the other side of the fixing plate (16). The second cylinder (17) is installed on the side of the workbench (1).

5. The apparatus according to claim 4, wherein The length difference between the second push rod (14) and the first push rod (13) is the same as the length of the stop bar (6).

6. The device for measuring the thermal conductivity of synthetic diamond raw materials according to claim 1, characterized in that, A second sealing film (18) is provided above the baffle (6). The second sealing film (18) is fixed to the bottom of the measuring box (4). The measuring box (4) is hollowed out at the position of the second sealing film (18).

7. The device for measuring the thermal conductivity of synthetic diamond raw materials according to claim 1, characterized in that, The temperature measuring mechanism includes a fixed base plate (19), and a number of temperature detection probes (20) are fixed inside the fixed base plate (19). The temperature detection probes (20) are equidistantly arranged. The fixed base plate (19) is located below the limiting mechanism. A connecting block (21) is fixed at one end of the fixed base plate (19). A guide rod (22) is provided inside the connecting block (21). The guide rod (22) is fixed between the worktable (1) and the bracket (2). The connecting block (21) slides along the outside of the guide rod (22). A third cylinder (23) is connected to the other end of the fixed base plate (19). The bottom of the third cylinder (23) is installed inside the bracket (2).

Images