Heating device and metal phase change temperature detector

Abstract

The invention provides a heating device and a metal phase transition temperature detector, the heating device comprises a heat conduction assembly and a heating assembly, the heat conduction assembly comprises a heat conduction bearing unit and a plurality of heat conduction sheets, all the heat conduction sheets are arranged in parallel in the thickness direction of the heat conduction sheets, the heat conduction bearing unit is arranged perpendicular to all the heat conduction sheets, and the heating assembly is arranged on the heat conduction bearing unit. The heat-conducting bearing unit is supported on one side by all the heat-conducting fins, so that one surface, deviating from each heat-conducting fin, of the heat-conducting bearing unit forms a bearing surface for executing metal phase change; the heating assembly comprises a pipeline used for conveying a heat conduction medium, and the pipeline sequentially penetrates through the heat conduction pieces. When the heat conduction assembly is placed in a container containing alcohol, the alcohol in the container is heated in a segmented mode through the multiple heat conduction pieces, the heat conduction time of the alcohol is shortened, all the heat conduction pieces are directly heated by conveying hot air flow, all the heat conduction pieces can be evenly heated and then conduct heat dissipation on the areas where the heat conduction pieces are located, and therefore the heat conduction efficiency of the alcohol is improved. And the regional temperature difference is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of metal phase change processing, and in particular to a heating device and a metal phase change temperature detector. Background Art

[0002] The metal phase change temperature detector is used for non-contact detection of phase change temperature. In traditional metal phase change temperature detectors, the heating method is to heat the bottom of the heating dish, heat the alcohol in the heating dish container, and transfer the temperature to the test metal sample through the alcohol. When the temperature reaches the temperature required for the metal phase change, the metal shape is deformed. The deformation process is continuously recorded by a high-speed camera, and the temperature rise process is detected by a temperature sensor. The shape change process and the corresponding temperature rise process are compared by computer processing to generate a change curve, and the metal phase change start temperature As (referring to the starting critical temperature when austenite transforms to martensite) and the metal phase change end temperature Af (referring to the critical temperature when the transformation from austenite to martensite is completed) can be obtained.

[0003] When the metal phase change temperature detector is used to monitor the metal phase change temperature, the alcohol temperature is actually monitored, not the metal sample temperature. Therefore, the accuracy of reading the alcohol temperature directly affects the metal phase change temperature calculation result. In order to improve the accuracy of temperature reading, the prior art reduces the temperature difference between different areas in the heating dish by setting an electromagnetic stirrer at the bottom of the heating dish for stirring. However, the use of the stirrer will produce water ripples, which affects image acquisition. Summary of the invention

[0004] The object of the present invention is to provide a heating device and a metal phase change temperature detector to solve the problem that the temperature detection accuracy of the existing metal phase change temperature detector is low.

[0005] In order to solve the above technical problems, the present invention provides a heating device for a metal phase change temperature detector, comprising: a heat conducting component and a heating component.

[0006] The heat-conducting assembly includes a heat-conducting bearing unit and a plurality of heat-conducting sheets, all of the heat-conducting sheets are arranged in parallel along their thickness direction, the heat-conducting bearing unit is arranged perpendicular to all of the heat-conducting sheets, and is carried by all of the heat-conducting sheets on one side, so that a side of the heat-conducting bearing unit that is away from each of the heat-conducting sheets constitutes a bearing surface for performing metal phase change;

[0007] The heating assembly comprises a pipeline for conveying a heat transfer medium, and the pipeline passes through each of the heat conducting sheets in sequence.

[0008] Optionally, in the heating device, the pipeline includes a first pipeline and a second pipeline, the second pipeline passes through each of the heat-conducting plates in sequence, and the heating component also includes: a heater and a circulation pump, the heater and the circulation pump are respectively connected to the two ends of the second pipeline, and the heater and the circulation pump are connected through the first pipeline, and the first pipeline, the second pipeline, the heater and the circulation pump together constitute a circulation passage for transporting the heat transfer medium.

[0009] Optionally, in the heating device, the second pipeline passes through each of the heat-conducting plates in sequence and reciprocates multiple times along the thickness direction of the heat-conducting plates.

[0010] Optionally, in the heating device, the heating device further comprises a heat transfer medium, and in an initial state, the heat transfer medium is stored in the heater, and the circulation passage is a sealed passage.

[0011] Optionally, in the heating device, the heat transfer medium includes mercury.

[0012] Optionally, in the heating device, the material of the heat-conducting bearing unit is copper; and / or the heat-conducting bearing unit has a plurality of heat-conducting holes arranged through the heat-conducting bearing unit along its thickness direction, and all the heat-conducting holes are dispersedly distributed and spread throughout the bearing surface.

[0013] Optionally, in the heating device, the distance between two adjacent heat conducting plates is 2 mm to 3 mm, and the diameter of the heat conducting hole is 3 mm to 6 mm.

[0014] Optionally, in the heating device, the heat conducting plate and the pipeline are both made of copper; and / or the heat conducting plate and the pipeline are welded.

[0015] The present invention further provides a metal phase change temperature detector, comprising: a container for carrying a heated liquid and a heating device as described in any of the preceding items, wherein the heat-conducting component is arranged in the container.

[0016] Optionally, the metal phase change temperature detector further includes: a temperature sensor and an imaging unit, wherein the temperature sensor is in contact with the carrying surface, and the imaging unit is located above the container.

[0017] In summary, the present invention provides a heating device and a metal phase change temperature detector, comprising: a heat-conducting component and a heating component, wherein the heat-conducting component comprises a heat-conducting bearing unit and a plurality of heat-conducting sheets, all of which are arranged in parallel along their own thickness direction, the heat-conducting bearing unit is arranged perpendicular to all of the heat-conducting sheets, and is carried by all of the heat-conducting sheets on one side, so that the side of the heat-conducting bearing unit that is away from each of the heat-conducting sheets constitutes a bearing surface for performing metal phase change; the heating component comprises a pipeline for conveying a heat-conducting medium, and the pipeline passes through each of the heat-conducting sheets in sequence. The heating device provided by the embodiment of the present invention, when the heat-conducting component is placed in a container containing alcohol, the plurality of heat-conducting sheets arranged in parallel along their own thickness direction divide and heat the alcohol inside the container, thereby shortening the heat conduction time of the alcohol, and directly heating each of the heat-conducting sheets by conveying a hot air flow, so that each of the heat-conducting sheets can be evenly heated and then dissipate heat to the area where it is located, thereby reducing the regional temperature difference. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a heating device in an embodiment of the present invention;

[0019] Figure 2 It is a partial structural schematic diagram of a metal phase change temperature detector in an embodiment of the present invention;

[0020] Figure 3 It is a structural schematic diagram of a metal phase change temperature detector in an embodiment of the present invention;

[0021] The descriptions of the reference numerals are as follows:

[0022] 1-heater; 2-circulation pump; 3-temperature sensor; 4-imaging unit; 5-fill light cover; 6-test sample; 7-heat conduction component; 8-container; 9-base electric control box; 10-drain valve; 11-pipeline;

[0023] 71-heat conducting sheet; 72-heat conducting bearing unit;

[0024] 111-first pipeline; 112-second pipeline;

[0025] 721-Thermal vias. DETAILED DESCRIPTION

[0026] In order to make the purpose, advantages and features of the present invention clearer, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the accompanying drawings are all in a very simplified form and are not drawn to scale, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In addition, the structure shown in the accompanying drawings is often a part of the actual structure. In particular, the emphasis of each accompanying drawing is different, and sometimes different proportions are used. It should also be understood that, unless otherwise specified or pointed out, the terms "first", "second", "third" and the like in the specification are only used to distinguish the various components, elements, steps, etc. in the specification, rather than to represent the logical relationship or sequential relationship between the various components, elements, steps, etc. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, directional terms such as above, below, up, down, upward, downward, left, right, etc. are used relative to the exemplary embodiments as shown in the figures, with the upward or upper direction toward the top of the corresponding figure, and the downward or lower direction toward the bottom of the corresponding figure.

[0027] The embodiment of the present invention provides a heating device, which is used in a metal phase change temperature detector. The heating device comprises: a heat conduction component and a heating component.

[0028] like Figure 1 As shown, the heat-conducting component 7 includes a heat-conducting bearing unit 72 and a plurality of heat-conducting sheets 71, all of the heat-conducting sheets 71 are arranged in parallel along their own thickness direction (i.e., the x direction in the figure), the heat-conducting bearing unit 72 is arranged perpendicular to all the heat-conducting sheets 71, and is jointly carried on one side by all the heat-conducting sheets 71, so that a side of the heat-conducting bearing unit 72 facing away from each of the heat-conducting sheets 71 constitutes a bearing surface for performing metal phase change.

[0029] Specifically, when in use, Figure 1 As shown in the figure, each of the heat conductive sheets 71 is arranged along the vertical direction (i.e., the z direction in the figure), and all of the heat conductive sheets 71 are arranged in sequence along their own thickness direction and have the same height. The heat conductive bearing unit 72 covers the top of all of the heat conductive sheets 71. When performing metal phase change on the test sample 6, the test sample 6 can be placed on the heat conductive bearing unit 72.

[0030] The heating assembly includes a pipeline 11 for conveying a heat transfer medium, and the pipeline 11 passes through each of the heat conducting sheets 71 in sequence.

[0031] The heating device provided in the embodiment of the present invention, when the heat-conducting component 7 is placed in a container containing alcohol, the multiple heat-conducting sheets 71 arranged in parallel along the thickness direction thereof divide and heat the alcohol inside the container, thereby shortening the heat conduction time of the alcohol. The pipeline 11 for conveying the hot air flow passes through each of the heat-conducting sheets 71 in turn, directly heating each of the heat-conducting sheets 71, so that each of the heat-conducting sheets 71 can be evenly heated and dissipate heat to the area where it is located, thereby reducing the regional temperature difference.

[0032] Preferably, in this embodiment, a circulation method is adopted when conveying the hot air flow. Specifically, the heating assembly further comprises: a heater 1 and a circulation pump 2. The hot air flow generated by the heater 1 is sequentially conveyed through each of the heat conducting sheets 71 through the pipeline 11 under the action of the circulation pump 2, and is recovered to the heater 1. In this way, waste of hot air flow can be avoided.

[0033] Specifically, in order to match the heater 1 and the circulation pump 2 to form the entire reflux path, the pipeline 11 specifically includes a first pipeline 111 and a second pipeline 112, the second pipeline 112 passes through each of the heat conducting sheets 71 in sequence, the heater 1 and the circulation pump 2 are respectively connected to the two ends of the second pipeline 112, and the heater 1 and the circulation pump 2 are connected through the first pipeline 111, and the first pipeline 111, the second pipeline 112, the heater 1 and the circulation pump 2 together constitute a circulation path for transporting heat transfer medium. That is, if defined by the airflow direction, the two ends of the first pipeline 111 are respectively connected to the output end of the heater 1 and the input end of the circulation pump 2, the two ends of the second pipeline 112 are respectively connected to the output end of the circulation pump 2 and the input end of the heater 1, and the second pipeline 112 passes through each of the heat conducting sheets 71 in sequence.

[0034] Furthermore, the heating device also includes a heat transfer medium, which is stored in the heater 1 in the initial state, and the circulation passage is a sealed passage. That is, it is not necessary to introduce gas into the circulation passage during use, thus avoiding waste caused by gas leakage.

[0035] Particularly preferably, the heat conduction medium includes mercury, and the thermal conductivity of mercury is 8.34W / mk, which is higher than that of traditional liquids. Therefore, mercury as a heat conduction medium can reduce the thermal reaction time. However, mercury is also a toxic substance. Therefore, circulating it in the closed pipeline 11 can ensure its safety.

[0036] In addition, preferably, the second pipeline 112 passes through each of the heat conducting sheets 71 in sequence and reciprocates multiple times along the thickness direction of the heat conducting sheets 71. Figure 1As shown in, the second pipeline 112 first passes through each of the heat conductive sheets 71 in sequence along the first direction, then passes through each of the heat conductive sheets 71 in sequence along the second direction, then passes through each of the first heat conductive sheets 71 in sequence again along the first direction, and then passes through each of the heat conductive sheets 71 in sequence again along the second direction. The first direction and the second direction are two opposite horizontal directions. One reciprocating combination each time can be arranged at different heights of the heat conductive sheet 71, and two different reciprocating combinations can be arranged at different horizontal positions of the heat conductive sheet 71 to improve the uniformity of heating and heat dissipation, but the present application is not limited to this. Other arrangements that can improve the uniformity of heating and heat dissipation are also within the protection scope of the present application.

[0037] Preferably, the heat conducting sheet 71 and the pipe 11 are made of copper, and the thermal conductivity of copper is 400W / m·k, which has good heat conduction and heat dissipation effects. In addition, the heat conducting sheet 71 and the second pipe 112 can be welded together to facilitate heat conduction.

[0038] In addition, preferably, the material of the heat-conducting bearing unit 72 is copper; and / or, the heat-conducting bearing unit 72 has a plurality of heat-conducting holes 721 penetrating along its thickness direction (i.e., z direction shown in the figure), all of which are dispersed and distributed throughout the bearing surface, i.e., the area size of the region where all of the heat-conducting holes 721 are dispersed matches the area size of the heat-conducting bearing unit 72. For example, when the heat-conducting bearing unit 72 is square, the plurality of heat-conducting holes 721 are distributed in an array on the heat-conducting bearing unit 72. After the heat of alcohol rises, the heat can be transferred to the test sample 6 thereon through the heat-conducting holes 721 on the heat-conducting bearing unit 72. When the material of the heat-conducting bearing unit 72 is copper, the heat can also be directly transferred to the test sample 6 through the heat-conducting bearing unit 72, thereby realizing dual-channel heat transfer, further reducing the regional temperature difference, and ensuring the stability of temperature measurement. Preferably, the distance between two adjacent heat conducting sheets 71 is 2 mm to 3 mm, and the diameter of the heat conducting hole 721 is 3 mm to 6 mm. Such a design specification can ensure excellent heat conduction and heat dissipation effects.

[0039] Figure 1 As shown in the figure, the thermal conductive sheets 71 are all rectangular and have the same area. However, the present application does not limit the thermal conductive sheets 71 to have the same area. In other embodiments, the thermal conductive sheets 71 may also be arranged along their thickness direction according to the area size variation rule of "ABABAB...". It is only necessary to ensure that the heights of all the thermal conductive sheets 71 are the same. It will not be repeated here.

[0040] like Figure 2As shown, an embodiment of the present invention further provides a metal phase change temperature detector, the metal phase change temperature detector comprises: a container 8 for carrying a heated liquid and the heating device provided in this embodiment, the heat conducting component 7 is arranged in the container 8. The heated liquid may be alcohol, but is not limited to alcohol, and other liquids capable of conducting heat may also be used.

[0041] The container 8 may be provided with a drain valve 10 to facilitate the discharge of the heated liquid from the container 8 after use.

[0042] like Figure 3 As shown, in addition to the container 8 for carrying the heated liquid and the heating device, the metal phase change temperature detector may also include a temperature sensor 3 and an imaging unit 4. The temperature sensor 3 is in contact with the carrying surface to detect the temperature at which the metal phase change is performed. The imaging unit 4 is located above the container 8 to capture the deformation of the test sample 6. In order to improve the shooting clarity of the imaging unit 4, a fill light cover 5 may also be provided under the lens of the imaging unit 4.

[0043] In addition, the metal phase change temperature detector may also include a base electrical control box 9, on which the heating device, the container 8 and the imaging unit 4 are all carried. The base electrical chamber box is also used to control the start and stop of the heater 1 and the heating efficiency.

[0044] In summary, the heating device and metal phase change temperature detector provided by the present invention include: a heat-conducting component and a heating component, wherein the heat-conducting component includes a heat-conducting bearing unit and a plurality of heat-conducting sheets, all of which are arranged in parallel along their own thickness direction, and the heat-conducting bearing unit is arranged perpendicular to all of the heat-conducting sheets, and is carried by all of the heat-conducting sheets on one side, so that the side of the heat-conducting bearing unit that is away from each of the heat-conducting sheets constitutes a bearing surface for performing metal phase change; the heating component includes a pipeline for conveying heat conduction medium, and the pipeline passes through each of the heat-conducting sheets in sequence. When the heating device provided by the embodiment of the present invention is placed in a container containing alcohol, the plurality of heat-conducting sheets arranged in parallel along their own thickness direction divide and heat the alcohol inside the container, thereby shortening the heat conduction time of the alcohol, and directly heating each of the heat-conducting sheets by conveying a hot air flow, so that each of the heat-conducting sheets can be evenly heated and then dissipate heat to the area where it is located, thereby reducing the regional temperature difference.

[0045] In addition, it should be recognized that although the present invention has been disclosed as a preferred embodiment, the above embodiment is not intended to limit the present invention. For any technician familiar with the art, without departing from the scope of the technical solution of the present invention, the technical content disclosed above can be used to make many possible changes and modifications to the technical solution of the present invention, or modified into equivalent embodiments of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still belongs to the scope of protection of the technical solution of the present invention.

Claims

1. A heating device for a metal phase change temperature detector, characterized in that: include: Thermally conductive components and heating components, The heat-conducting assembly includes a heat-conducting bearing unit and a plurality of heat-conducting sheets, all of the heat-conducting sheets are arranged in parallel along their thickness direction, the heat-conducting bearing unit is arranged perpendicular to all of the heat-conducting sheets, and is carried by all of the heat-conducting sheets on one side, so that a side of the heat-conducting bearing unit that is away from each of the heat-conducting sheets constitutes a bearing surface for performing metal phase change; The heating assembly comprises a pipeline for conveying a heat transfer medium, and the pipeline passes through each of the heat conducting sheets in sequence.

2. The heating device according to claim 2, characterized in that The pipeline includes a first pipeline and a second pipeline, the second pipeline passes through each of the heat conducting plates in sequence, and the heating component also includes: a heater and a circulation pump, the heater and the circulation pump are respectively connected to the two ends of the second pipeline, and the heater and the circulation pump are connected through the first pipeline, and the first pipeline, the second pipeline, the heater and the circulation pump together constitute a circulation passage for transporting a heat transfer medium.

3. The heating device according to claim 2, characterized in that The second pipeline passes through each of the heat conducting sheets in sequence and reciprocates multiple times along the thickness direction of the heat conducting sheets.

4. The heating device according to claim 2, characterized in that The heating device further comprises a heat transfer medium. In an initial state, the heat transfer medium is stored in the heater, and the circulation passage is a sealed passage.

5. The heating device according to claim 5, characterized in that The heat transfer medium includes mercury.

6. The heating device according to claim 1, characterized in that The material of the heat-conducting bearing unit is copper; and / or the heat-conducting bearing unit has a plurality of heat-conducting holes arranged through the heat-conducting bearing unit along the thickness direction thereof, and all the heat-conducting holes are distributed throughout the bearing surface.

7. The heating device according to claim 6, characterized in that The distance between two adjacent heat conducting plates is 2 mm to 3 mm, and the diameter of the heat conducting hole is 3 mm to 6 mm.

8. The heating device according to claim 1, characterized in that The heat conducting plate and the pipeline are both made of copper; and / or the heat conducting plate and the pipeline are welded.

9. A metal phase change temperature detector, characterized in that: include: A container for carrying heated liquid and a heating device as claimed in any one of claims 1 to 8, wherein the heat conducting component is arranged in the container.

10. The metal phase change temperature detector according to claim 9, characterized in that: Also includes: A temperature sensor and an imaging unit, wherein the temperature sensor is in contact with the carrying surface, and the imaging unit is located above the container.

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