A melting point test device

Abstract

The present application discloses a melting point test device, which relates to the technical field of nuclear material melting point testing. The melting point test device includes a melting point test chamber, a sealed crucible, an induction heating device, and a temperature measuring device. The melting point test chamber is used to isolate the external atmospheric environment and simulate the test environment internally. The sealed crucible is used to store the sample to be tested, and the sample to be tested is completely sealed inside the sealed crucible, and the sealed crucible is installed inside the melting point test chamber. The induction heating device is used to heat the sealed crucible to heat and melt the sample to be tested. The temperature measuring device is used to monitor the temperature of the sample to be tested and obtain the melting point temperature of the sample to be tested. The above-mentioned melting point test device is suitable for ultra-high temperature material melting point testing of nuclear materials. The process is safe and effective, and avoids the radiation risk of exposed materials.

Description

Technical Field

[0001] The present application relates to the technical field of nuclear material melting point testing, and in particular to a melting point testing device. Background Art

[0002] In the nuclear industry, melting point testing of nuclear fuel materials provides key technical data for safety assurance, so safe melting point testing of related materials is particularly important.

[0003] Currently, existing technologies are designed for melting point testing of common materials and lack the necessary testing conditions or safety protections for nuclear materials testing. For example, conventional melting point testing devices using magnetic levitation induction melting can measure the melting point of metal alloys with higher melting points. However, the material is exposed during the melting process, posing a radiation risk. Establishing a separate hot chamber for safety isolation would incur significant testing costs. Summary of the Invention

[0004] The purpose of this application is to provide a melting point testing device suitable for ultra-high temperature material melting point testing of nuclear materials. The process is safe and effective, and avoids the radiation risk of exposed materials.

[0005] To achieve the above objectives, the present application provides a melting point testing device, comprising:

[0006] Melting point test chamber, used to isolate the external atmospheric environment and simulate the test environment inside;

[0007] A sealed crucible for storing a sample to be tested, wherein the sample to be tested is completely sealed inside the sealed crucible, and the sealed crucible is installed inside the melting point test chamber;

[0008] an induction heating device, used to heat the sealed crucible to heat and melt the sample to be tested;

[0009] The temperature measuring device is used to monitor the temperature of the sample to be tested and obtain the melting point temperature of the sample to be tested.

[0010] In some embodiments, the melting point test chamber comprises:

[0011] a test chamber tube body, connected to the test chamber main body, and the test chamber tube body is equipped with the sealed crucible;

[0012] The test chamber body is provided with an air release valve, an air inlet valve, an air outlet valve and a vacuum valve;

[0013] The melting point testing equipment also includes:

[0014] a vacuum pumping device connected to the vacuum valve;

[0015] An inert atmosphere filling device is connected to the air inlet valve and the air outlet valve.

[0016] In some embodiments, the test chamber tube body is sealed and connected to the test chamber main body, and a water-cooling connection flange is provided between the test chamber tube body and the test chamber main body.

[0017] In some embodiments, the melting point testing equipment further includes a cooling device connected to the water-cooling connection flange; the cooling device is also used to cool the induction heating device and the vacuum pumping device.

[0018] In some embodiments, the vacuum pumping device includes a vacuum pumping pipe, a first end of the vacuum pumping pipe is connected to the vacuum valve, a second end of the vacuum pumping pipe is connected to a molecular pump, and a vacuum ionization gauge and a vacuum resistance gauge are provided on the vacuum pumping pipe;

[0019] The inert atmosphere filling device includes an inert gas source, which is connected to the air inlet valve through a control valve, and a pressure gauge is also provided on the vacuum exhaust pipeline.

[0020] In some embodiments, a blackbody hole is provided on the sealed crucible, and the blackbody hole is located outside the sealed crucible. The sample to be tested inside the sealed crucible is submerged in the blackbody hole outside the sealed crucible in the height direction, and the temperature measuring device monitors the temperature of the sample to be tested by monitoring the temperature of the blackbody hole.

[0021] In some embodiments, the sealed crucible includes a pot body and a lid body, and the lid body is provided with the blackbody hole.

[0022] In some embodiments, the test chamber tube body is a glass tube, the temperature measuring device is a non-contact thermometer, the non-contact thermometer is located above the glass tube, and the test point of the non-contact thermometer is aligned with the black body hole of the cover.

[0023] In some embodiments, the induction heating device comprises:

[0024] An induction heating power supply is provided with a heating coil fitted over the melting point test chamber;

[0025] An induction heating body is installed inside the melting point test chamber and is fitted with the sealed crucible. The induction heating body is used to be heated by the induction heating power supply and heat the sealed crucible.

[0026] In some embodiments, the melting point testing equipment further includes a heat preservation device, and the heat preservation device is mounted on the induction heating body.

[0027] Compared with the above background technology, the melting point test equipment provided by the present application includes a melting point test chamber, a sealed crucible, an induction heating device and a temperature measuring device; the melting point test chamber is used to isolate the external atmospheric environment and simulate the test environment internally; the sealed crucible is used to store the sample to be tested, and the sample to be tested is completely sealed inside the sealed crucible, and the sealed crucible is installed inside the melting point test chamber; the induction heating device is used to heat the sealed crucible to heat up and melt the sample to be tested; the temperature measuring device is used to monitor the temperature of the sample to be tested and obtain the melting point temperature of the sample to be tested.

[0028] During use, the melting point tester is placed in a sealed crucible, completely encapsulating the sample. The sealed crucible is then installed in a melting point test chamber, which isolates the external atmosphere and simulates a suitable test environment for melting point testing. An induction heating device heats the sealed crucible, causing the sample to heat up and melt. A temperature measuring device monitors the sample's temperature and determines its melting point. This melting point tester is suitable for ultra-high-temperature melting point testing of nuclear materials. The process is safe and effective, avoiding the risk of radiation exposure to exposed materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0030] Figure 1 An axonometric diagram of a melting point test apparatus provided in an embodiment of the present application;

[0031] Figure 2 A front view of a melting point testing device provided in an embodiment of the present application;

[0032] Figure 3 A side view of a melting point testing apparatus provided in an embodiment of the present application;

[0033] Figure 4 A top view of the melting point testing device provided in an embodiment of the present application;

[0034] Figure 5 An axonometric diagram of a melting point test chamber provided in an embodiment of the present application;

[0035] Figure 6 A cross-sectional view of a melting point test chamber provided in an embodiment of the present application when viewed from the front;

[0036] Figure 7 A front view of a vacuum pumping device provided in an embodiment of the present application;

[0037] Figure 8 This is an axonometric view of the mechanical pump provided in an embodiment of the present application.

[0038] in:

[0039] 1- Melting point test chamber, 2- Sealed crucible, 3- Induction heating device, 4- Temperature measuring device, 5- Vacuum exhaust device, 6- Inert atmosphere filling device, 7- Loading frame, 8- Insulation device,

[0040] 11-test chamber tube body, 12-test chamber body, 13-water cooling connection flange, 31-induction heating power supply, 32-induction heating body, 51-vacuum exhaust pipe, 52-molecular pump, 53-vacuum ionization gauge, 54-vacuum resistance gauge, 55-mechanical pump, 61-inert gas source, 62-pressure gauge, 121-air release valve, 122-air inlet valve, 123-air outlet valve, 124-vacuum valve. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0042] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0043] The nuclear industry also plays a crucial role in national economic development. Clearly understanding the melting point of nuclear materials is a crucial technical metric. Safely, efficiently, and accurately determining the melting point of nuclear materials is an essential step in the advancement of the nuclear industry. However, existing technologies are designed for melting point testing of ordinary materials and lack the necessary testing conditions for nuclear materials, nor the necessary safety and protection capabilities to ensure nuclear material testing.

[0044] In response to the above problems, in order to improve test safety, increase test efficiency and save costs, a melting point test equipment was developed.

[0045] Please refer to Figures 1 to 8 ,in, Figure 1 This is an axonometric diagram of the melting point test device provided in an embodiment of the present application. Figure 2 This is a front view of the melting point testing device provided in an embodiment of the present application. Figure 3 A side view of the melting point testing device provided in an embodiment of the present application, Figure 4 A top view of the melting point testing device provided in an embodiment of the present application, Figure 5This is an axonometric diagram of the melting point test chamber provided in an embodiment of the present application. Figure 6 This is a cross-sectional view of the melting point test chamber provided in an embodiment of the present application, Figure 7 This is a front view of the vacuum pumping device provided in an embodiment of the present application. Figure 8 This is an axonometric view of the mechanical pump provided in an embodiment of the present application.

[0046] like Figure 1 and Figure 6 As shown, the melting point test device includes a melting point test chamber 1, a sealed crucible 2, an induction heating device 3 and a temperature measuring device 4. These components can be arranged with a supporting frame 7 as a supporting basis.

[0047] Melting point test chamber 1 serves as a chamber for melting nuclear materials to test their melting point. It isolates the external atmosphere and provides a simulated test environment. A sealed crucible 2 stores the test sample 01, which is completely sealed within the sealed crucible 2 and mounted within the melting point test chamber 1. An induction heating device 3 heats the sealed crucible 2, causing the test sample 01 to heat and melt. A temperature measuring device 4 monitors the temperature of the test sample 01 to determine its melting point.

[0048] During use of this melting point testing equipment, the sample 01 to be tested is stored in a sealed crucible 2, which completely seals the sample. The sealed crucible 2 is installed in a melting point testing chamber 1, which isolates the external atmosphere and simulates a suitable testing environment for melting point testing of the sample 01. An induction heating device 3 heats the sealed crucible 2, causing the sample 01 to heat up and melt. A temperature measuring device 4 monitors the temperature of the sample 01 and determines its melting point. This melting point testing equipment is suitable for ultra-high-temperature melting point testing of nuclear materials. The process is safe and effective, avoiding the risk of radiation exposure to exposed materials.

[0049] Please continue to refer to Figure 5 and Figure 6 .

[0050] In some embodiments, the melting point testing apparatus further includes a vacuum pumping device 5 and an inert atmosphere filling device 6, which are connected to the melting point testing chamber 1. The vacuum pumping device 5 provides a vacuum environment for the melting point testing chamber 1, and the inert atmosphere filling device 6 provides a protective inert atmosphere environment for the melting point testing chamber 1.

[0051] Furthermore, the melting point test chamber 1 includes a test chamber tube body 11 and a test chamber main body 12. The test chamber tube body 11 is connected to the test chamber main body 12. A sealed crucible 2 is installed in the test chamber tube body 11. The vacuum exhaust device 5 and the inert atmosphere filling device 6 are connected to the test chamber main body 12.

[0052] The test chamber body 12 is equipped with a purge valve 121, an inlet valve 122, an outlet valve 123, and a vacuum valve 124. The vacuum pumping device 5 is connected to the vacuum valve 124, and the inert atmosphere filling device 6 is connected to the inlet valve 122 and the outlet valve 123. The purge valve 121 is used to release the vacuum environment after the test is completed. The inlet valve 122 and the outlet valve 123 are used to open and close the inert atmosphere environment. The vacuum valve 124 connects the melting point test chamber 1 and the vacuum pumping device 5, responsible for opening and closing the connection between the two.

[0053] In this embodiment, the test chamber tube body 11 is sealed with the test chamber body 12. Figure 5 and Figure 6 For example, the lower portion of the test chamber tube body 11 is sealed with the test chamber body 12. Furthermore, a water-cooling connection flange 13 is provided between the test chamber tube body 11 and the test chamber body 12. The water-cooling connection flange 13 seals the test chamber tube body 11 and the test chamber body 12, while also cooling the sealing ring and providing protective water cooling for the outer shell.

[0054] In some embodiments, the melting point testing apparatus further includes a cooling device connected to the water-cooling connection flange 13 ; the cooling device is also used to cool the induction heating device 3 and the vacuum pumping device 5 .

[0055] More specifically, the induction heating device 3 includes an induction heating power supply 31, and the vacuum pumping device 5 includes a molecular pump 52. Both the induction heating power supply 31 and the molecular pump 52 are provided with interfaces connected to a cooling device to cool the heat-generating components by water cooling.

[0056] Please continue to refer to Figure 7 and Figure 8 .

[0057] In some embodiments, the vacuum pumping device 5 includes a vacuum pumping pipe 51, a first end of which is connected to the vacuum valve 124, and a second end of which is connected to the molecular pump 52. The vacuum pumping pipe 51 is provided with a vacuum ionization gauge 53 and a vacuum resistance gauge 54. The inert atmosphere filling device 6 includes an inert gas source 61, which is connected to the inlet valve 122 via a control valve. The vacuum pumping pipe 51 is also provided with a pressure gauge 62. The inert gas source 61 may be an argon tank.

[0058] In this embodiment, a vacuum ionization gauge 53 and a vacuum resistance gauge 54 are used to monitor the vacuum level in a vacuum environment. A pressure gauge 62 is used to monitor the pressure in an inert gas environment and, based on pressure changes, to control the valve for inflating or deflation. A molecular pump 52 is connected to a mechanical pump 55 to create a vacuum environment.

[0059] In a specific embodiment, a blackbody hole is provided on the sealed crucible 2, and the blackbody hole is located outside the sealed crucible 2. The sample to be tested 01 inside the sealed crucible 2 is submerged in the blackbody hole outside the sealed crucible 2 in the height direction. The temperature measuring device 4 monitors the temperature of the sample to be tested 01 by monitoring the temperature of the blackbody hole.

[0060] In this embodiment, temperature measurement device 4 employs a non-contact thermometer, with its test point aligned with the blackbody aperture of sealed crucible 2 to monitor and control temperature changes. This arrangement prevents exposure and direct contact with sample 01, ensuring accurate temperature monitoring of sample 01.

[0061] Furthermore, the sealed crucible 2 includes a pot body and a lid body, and the lid body is provided with a black body hole. When storing the sample 01 to be tested, the sample 01 to be tested is first placed in the pot body, requiring that the sample 01 to be tested can cover the black body hole, and then the lid body is covered. After filling, it is welded and sealed.

[0062] Furthermore, the test chamber tube body 11 is a glass tube, the non-contact thermometer is located above the glass tube, and the test point of the non-contact thermometer is aligned with the black body hole of the cover.

[0063] In some embodiments, the induction heating device 3 includes an induction heating power supply 31 and an induction heating body 32. The melting point testing device further includes a heat preservation device 8.

[0064] In this embodiment, the test sample 01 is placed in a sealed crucible 2, sealed by welding, and then placed in an induction heating element 32. The induction heating element 32 is covered with a heat-insulating device 8 to block light and insulate heat. During operation, the heating coil of the induction heating power supply 31 is enclosed within the test chamber tube 11 of the melting point test chamber 1. The heating coil heats the induction heating element 32. Once the induction heating element 32 is heated, the sealed crucible 2 inside is also heated by radiation, allowing the melting test of the test sample 01 to be performed.

[0065] In a specific embodiment, the melting point testing device provided herein is a device for testing the melting point of ultra-high-temperature materials used in nuclear materials. The device primarily comprises a melting point testing chamber 1, an induction heating power supply 31, a non-contact thermometer, a vacuum pumping device 5, an inert atmosphere filling device 6, a temperature control device, a cooling device, and a supporting frame 7. The induction heating power supply 31 induction heats a sealed crucible 2 containing a sample 01 (nuclear material) to be tested. The non-contact thermometer detects the melting temperature of the nuclear material using laser temperature measurement. The temperature control device detects and controls the heating and melting process. The temperature control device should be connected to the induction heating power supply 31 and the non-contact thermometer.

[0066] During use, the core material is welded to the sealed crucible 2, so that the core material submerges the blackbody aperture in the lid. As the temperature rises and melts, the core material's temperature can be monitored by measuring the temperature of the blackbody aperture using a non-contact thermometer. When the core material reaches its melting point, it absorbs heat but its temperature no longer increases at the original rate. At this point, a fluctuation in the temperature curve recorded by the non-contact thermometer indicates the melting point.

[0067] It should be noted that many of the components mentioned in this application are universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0068] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0069] The above is a detailed introduction to the melting point test equipment provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only intended to help understand the method and core ideas of the present application. It should be pointed out that, for those skilled in the art, without departing from the principles of the present application, several improvements and modifications may be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A melting point test device, characterized in that, include: Melting point test chamber, used to isolate the external atmospheric environment and simulate the test environment inside; A sealed crucible for storing a sample to be tested, wherein the sample to be tested is completely sealed inside the sealed crucible, and the sealed crucible is installed inside the melting point test chamber; an induction heating device, used to heat the sealed crucible to heat and melt the sample to be tested; A temperature measuring device is used to monitor the temperature of the sample to be tested and obtain the melting point temperature of the sample to be tested; The melting point test chamber comprises: a test chamber tube body, connected to the test chamber main body, and the test chamber tube body is equipped with the sealed crucible; The test chamber body is provided with an air release valve, an air inlet valve, an air outlet valve and a vacuum valve; The melting point testing equipment also includes: a vacuum pumping device connected to the vacuum valve; an inert atmosphere charging device connected to the air inlet valve and the air outlet valve; The vacuum pumping device includes a vacuum pumping pipe, a first end of the vacuum pumping pipe is connected to the vacuum valve, a second end of the vacuum pumping pipe is connected to the molecular pump, and a vacuum ionization gauge and a vacuum resistance gauge are provided on the vacuum pumping pipe; The inert atmosphere filling device includes an inert gas source, which is connected to the air inlet valve through a control valve, and a pressure gauge is also provided on the vacuum pumping pipeline; The sealed crucible is provided with a blackbody hole, the blackbody hole is located outside the sealed crucible, the sample to be tested inside the sealed crucible is submerged in the blackbody hole outside the sealed crucible in the height direction, and the temperature measuring device monitors the temperature of the sample to be tested by monitoring the temperature of the blackbody hole; The induction heating device comprises: An induction heating power supply is provided with a heating coil fitted over the melting point test chamber; An induction heating body is installed inside the melting point test chamber and is fitted with the sealed crucible. The induction heating body is used to be heated by the induction heating power supply and heat the sealed crucible.

2. The melting point test device according to claim 1, characterized in that The test chamber tube body is sealedly connected to the test chamber main body, and a water-cooling connection flange is provided between the test chamber tube body and the test chamber main body.

3. The melting point test equipment according to claim 2, characterized in that It also includes a cooling device, which is connected to the water-cooling connecting flange; the cooling device is also used to cool the induction heating device and the vacuum pumping device.

4. The melting point test device according to claim 1, characterized in that The sealed crucible comprises a pot body and a cover body, and the cover body is provided with the blackbody hole.

5. The melting point test device according to claim 4, characterized in that The test chamber tube body is a glass tube, the temperature measuring device is a non-contact thermometer, the non-contact thermometer is located above the glass tube, and the test point of the non-contact thermometer is aligned with the black body hole of the cover.

6. The melting point test device according to claim 5, characterized in that It also includes a heat preservation device, which is mounted on the induction heating body.

Images