A thermal shock resistance testing device

Abstract

The application relates to a thermal shock resistance testing device which comprises a fixing table, a first furnace body and a second furnace body, the first furnace body and the second furnace body are installed on the fixing table, the first furnace body and the second furnace body are respectively provided with furnace cavities, and the device further comprises a quartz tube, the first furnace body and the second furnace body are separately arranged, the quartz tube is arranged in the furnace cavities of the first furnace body and the second furnace body, at least one end of the quartz tube is openable to form a feeding opening, and a channel for transferring materials between the two furnace cavities is formed in the quartz tube. Under the premise that the furnace cavities are separated, the material transfer channel between the furnace cavities with different temperatures is effectively established, the influence of the test object on the test environment when the test object is transferred in the high-temperature and low-temperature environments is reduced, and the effectiveness of the test is ensured.

Description

Technical Field

[0001] This invention relates to the field of testing equipment, and more particularly to a thermal shock resistance testing device. Background Technology

[0002] Thermal shock resistance refers to a material's ability to withstand the thermal stress caused by rapid temperature changes, thereby preventing crack initiation and propagation and maintaining structural integrity and function. This property is particularly important for materials used in extreme temperature environments. In practical applications, thermal shock resistance is a key indicator for evaluating a material's suitability for high-temperature or drastically changing temperature environments. For example, in the aerospace field, materials may encounter extreme temperature variations, thus requiring good thermal shock resistance to ensure their performance and safety under these conditions.

[0003] Thermal shock resistance is typically influenced by a variety of factors, including the material's thermophysical properties (such as coefficient of thermal expansion and thermal conductivity), mechanical properties (such as elastic modulus and fracture toughness), microstructure (such as grain size and phase interfaces), and external conditions (such as the rate of temperature change and the magnitude of temperature difference). By optimizing these factors, the thermal shock resistance of materials can be improved, thereby enhancing their reliability and durability in practical applications.

[0004] Therefore, thermal shock resistance testing is essential in the material research and development process, and the corresponding testing equipment is also crucial. In practice, a major challenge in thermal shock resistance testing devices is how to quickly transfer the test object in high and low temperature environments while minimizing the impact of the operation on the testing environment to simulate real-world usage scenarios. Chinese invention patent application number 202210165304.8, entitled "Integrated Thermal Shock Resistance Testing Device," discloses an integrated thermal shock resistance testing device. This device employs an integrated housing with a vertically installed heat insulation wall inside, dividing the housing into a heating chamber and a cooling chamber. Insulation doors are installed on the heat insulation wall, and a push rod device is installed on the housing to address the aforementioned problems.

[0005] However, even if the transfer speed is fast enough, such a testing device still has the possibility of temperature changes or material exchange between the two chambers during the opening of the isolation door, which actually has a significant impact on the testing environment. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the technical problem to be solved by this invention is to provide a thermal shock resistance testing device that, under the premise of furnace cavity separation, establishes a material transfer channel between furnace cavities at different temperatures. This can effectively reduce the impact of transferring test objects in high and low temperature environments on the testing environment and ensure the effectiveness of the test.

[0007] To solve the above-mentioned technical problems, the present invention proposes the following technical solution:

[0008] A thermal shock resistance testing device includes a fixed platform, a first furnace body, and a second furnace body. The first furnace body and the second furnace body are mounted on the fixed platform. The first furnace body and the second furnace body each have a furnace cavity. The device also includes a quartz tube. The first furnace body and the second furnace body are separately arranged. The quartz tube is installed in the furnace cavities of the first furnace body and the second furnace body. At least one end of the quartz tube can be opened to form a feeding port. The inside of the quartz tube forms a channel for material to be transferred between the two furnace cavities.

[0009] The key to thermal shock resistance testing lies in high temperatures and rapid temperature changes. Quartz tubes possess excellent high-temperature stability, maintaining their performance under various extreme temperature conditions. Simultaneously, quartz has an extremely low coefficient of thermal expansion, approximately 5.5 × 10⁻⁷ / ℃, allowing it to withstand drastic temperature variations without cracking. Furthermore, quartz exhibits poor thermal conductivity. This invention utilizes these three characteristics of quartz, using it as a carrier for materials within a furnace and connecting furnace chambers at different temperatures. The test material only needs to move within the quartz tube to achieve the transfer between high and low temperature environments, minimizing external interference and reliably ensuring the validity of the test.

[0010] Regarding the problem of how to achieve material transfer in a quartz tube, the present invention provides the following preferred solutions:

[0011] The first option: This thermal shock resistance testing equipment also includes a support plate, which is horizontally mounted on a fixed platform. The first furnace body, the second furnace body, and the quartz tube are fixedly mounted on the support plate. A lifting assembly is provided between the support plate and the fixed platform, which keeps the support plate horizontal or tilts it. The advantage of this option is that by tilting the entire device, the material can be transferred using only its own weight without the need for external devices, further reducing external interference.

[0012] The second option involves fixing the first and second furnace bodies horizontally onto a fixed platform. A lifting assembly is installed between the quartz tube and the platform, allowing the quartz tube to remain horizontal or tilt. Compared to the first option, this option only requires tilting the quartz tube, effectively reducing the complexity of the lifting assembly and the output power.

[0013] The third option: This thermal shock resistance testing equipment also includes an airflow generator. Both ends of the quartz tube are in a vented state. The airflow generator includes a nozzle and an air source. One end of the nozzle is aligned with the internal channel of the quartz tube, and the other end is connected to the air source. The advantages of this option are also very obvious. Regardless of whether the first or second option is used, a lifting assembly is required. However, this option eliminates the need for a lifting assembly, simplifying the installation structure of the furnace body and quartz tube. Furthermore, the airflow generator has a mature structure and is readily available, effectively reducing equipment costs.

[0014] The above-mentioned solutions utilize gravity or airflow to transfer materials. Regarding the material positioning problem, this invention further provides the following solution:

[0015] In the first scheme, a material receiving trough is provided on the quartz tube. The material receiving trough is located in the furnace cavity and is formed by a downward indentation on the lower wall of the quartz tube, allowing material to fall into it. When the material is transferred using gravity or airflow, the material moves and falls into the material receiving trough, ensuring that the material is transferred to the furnace cavity and reducing the difficulty of operation.

[0016] Preferably, there are two material containers, located in the furnace cavities of the first and second furnace bodies respectively. The side walls of the material containers smoothly transition to the lower wall of the quartz tube. In test scenarios with repeated temperature changes, the material needs to be transferred back and forth between the two furnace cavities. Setting up two material containers and designing them with a slide-in and slide-out structure can effectively adapt to this scenario.

[0017] The second option is that the thermal shock resistance testing equipment also includes a positioning component, which includes a blocking part, a connecting part, and a fixing part. The blocking part is set in the channel inside the quartz tube and can block the material from moving in one direction. The fixing part can move relative to the quartz tube and can be fixedly connected to the quartz tube. The two ends of the connecting part are respectively connected to the blocking part and the fixing part. When the fixing part is fixedly connected to the quartz tube, the blocking part is located inside the furnace cavity.

[0018] Unlike the first approach, this invention employs an external positioning element to position the material. In use, the positioning element is fixed in a first position (where the blocking part is located in the first furnace cavity). The material stops moving after reaching the blocking part in the furnace cavity. The positioning element is then moved to a second position and fixed (where the blocking part is located in the second furnace cavity), while the material remains in the first furnace cavity for heating and heat preservation. During transfer, the material stops moving after reaching the blocking part, which is now in the second furnace cavity, and another temperature setting is initiated. This design, despite the addition of a positioning element, allows the element to enter the second temperature field earlier, ensuring that the transfer does not affect the second temperature field.

[0019] Preferably, the upper wall of the quartz tube is provided with a guide groove, and the fixing part includes a sliding member and a fixing member. One end of the sliding member is slidably installed in the guide groove, and the other end of the sliding member extends from the upper wall of the quartz tube and is connected to the fixing member. With this structure, the positioning member can extend from the middle of the quartz tube to form a fixing structure, which can effectively shorten the length of the positioning member and improve manufacturability.

[0020] The connecting part is a rod-shaped component, extending along the length of the quartz tube. When one end of the rod-shaped component connects to the blocking part inside the furnace cavity, the other end connects to the fixing part outside the furnace cavity. This design ensures that the fixing part is located outside the furnace cavity, facilitating fixing operations and preventing the fixing part from failing under high-temperature conditions.

[0021] In addition, this invention provides another solution for the material transfer furnace chamber: the thermal shock resistance testing equipment also includes a translation component, which is mounted on a fixed platform and causes the relative positions of the first and second furnace bodies and the quartz tube to shift. Compared with the lifting component, the translation component is more stable, reliable, and inexpensive.

[0022] In summary, this thermal shock resistance testing equipment, under the premise of furnace cavity separation, effectively establishes a material transfer channel between furnace cavities at different temperatures, reduces the impact of transferring test objects in high and low temperature environments on the test environment, and ensures the effectiveness of the test. Attached Figure Description

[0023] The invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Figure 1 This is a structural schematic diagram of Embodiment 1;

[0025] Figure 2 This is a structural schematic diagram of Embodiment 2;

[0026] Figure 3 This is a structural schematic diagram of Embodiment 3;

[0027] Figure 4 This is a structural schematic diagram of embodiment A;

[0028] Figure 5 This is a structural schematic diagram of embodiment B;

[0029] Figure 6 This is a schematic diagram of the translation component in the embodiment.

[0030] Among them, 1-fixed platform; 2-first furnace body; 3-second furnace body; 4-quartz tube; 41-feeding port; 42-channel; 43-material container; 44-guide groove; 5-support plate; 6-lifting assembly; 7-airflow generator; 71-air nozzle; 72-air source; 8-positioning component; 81-blocking part; 82-connecting part; 821-rod-shaped component; 83-fixed part; 831-sliding component; 832-fixed component; 9-translation assembly. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0032] like Figure 1 The thermal shock resistance testing device shown includes a fixed platform 1, a first furnace body 2 and a second furnace body 3. The first furnace body 2 and the second furnace body 3 are mounted on the fixed platform 1. The first furnace body 2 and the second furnace body 3 each have a furnace cavity. It also includes a quartz tube 4. The first furnace body 2 and the second furnace body 3 are separately arranged. The quartz tube 4 is installed in the furnace cavity of the first furnace body 2 and the second furnace body 3. At least one end of the quartz tube 4 can be opened to form a feeding port 41. The inside of the quartz tube forms a channel 42 for material to be transferred between the two furnace cavities.

[0033] The key to thermal shock resistance testing lies in high temperatures and rapid temperature changes. Quartz tube 4 exhibits excellent high-temperature stability, maintaining its performance under various extreme temperature conditions. Simultaneously, quartz has an extremely low coefficient of thermal expansion, approximately 5.5 × 10⁻⁷ / ℃, allowing it to withstand drastic temperature variations without cracking. Furthermore, quartz has poor thermal conductivity. This invention utilizes these three characteristics of quartz, using it as a carrier for materials within the furnace and connecting furnace chambers at different temperatures. The test material only needs to move within quartz tube 4 to achieve transfer between high and low temperature environments, minimizing external interference and reliably ensuring the validity of the test.

[0034] Regarding the problem of how to achieve the transfer of materials in the quartz tube 4, the present invention provides the following implementation methods:

[0035] Example 1:

[0036] The thermal shock resistance testing equipment also includes a support plate 5, which is horizontally mounted on a fixed platform 1. The first furnace body 2, the second furnace body 3, and the quartz tube 4 are fixedly mounted on the support plate 5. A lifting assembly 6 is provided between the support plate 5 and the fixed platform 1, which keeps the support plate 5 horizontal or tilts it. The advantage of this design is that by tilting the entire device, the material can be transferred using only its own weight without the need for external devices, further reducing external interference.

[0037] Example 2:

[0038] like Figure 2 As shown, the first furnace body 2 and the second furnace body 3 are fixedly mounted on the fixed platform 1 in a horizontal direction. A lifting assembly 6 is provided between the quartz tube 4 and the fixed platform 1. The lifting assembly 6 keeps the quartz tube 4 horizontal or tilts it. Compared with Embodiment 1, this solution only requires tilting the quartz tube 4, which can effectively reduce the complexity of the lifting assembly 6 and the output power.

[0039] It is worth noting that the present invention does not provide a detailed description of the lifting component 6 because it can achieve the tilting of the furnace body or quartz tube 4 by adopting a conventional structure, such as fixing one side and using a linear power element (cylinder, oil cylinder or electric push rod, etc.) on the other side, or using linear power elements with different strokes on both sides, etc.

[0040] Example 3:

[0041] like Figure 3 As shown, this thermal shock resistance testing equipment also includes an airflow generator 7. Both ends of the quartz tube 4 are in an air-ventilated state. The airflow generator 7 includes an air nozzle 71 and an air source 72. One end of the air nozzle 71 is aligned with the channel 42 inside the quartz tube 4, and the other end of the air nozzle 71 is connected to the air source 72. The advantages of this solution are also very obvious. Regardless of whether the first or second solution is adopted, a lifting assembly 6 needs to be installed. However, in this solution, the lifting assembly 6 is not required, which simplifies the installation structure of the furnace body and the quartz tube 4. At the same time, the airflow generator 7 has a mature structure and is readily available for purchase, which can effectively reduce equipment costs.

[0042] The above-mentioned solutions utilize gravity or airflow to transfer materials. Regarding the material positioning problem, the present invention further provides the following embodiments:

[0043] Example A:

[0044] like Figure 4 As shown, the quartz tube 4 is equipped with a material receiving trough 43, which is located in the furnace cavity. The material receiving trough 43 is formed by a downward indentation of the lower wall of the quartz tube 4, allowing materials to fall into it. When materials are transferred using gravity or airflow, the materials move, and when they reach the material receiving trough, they fall in, ensuring that the materials are transferred to the furnace cavity and reducing operational difficulty.

[0045] Preferably, there are two material containers 43, located in the furnace cavities of the first furnace body 2 and the second furnace body 3 respectively. The sidewalls of the material containers 43 smoothly transition to the lower wall of the quartz tube 4. In test scenarios with repeated temperature changes, the material needs to be transferred back and forth between the two furnace cavities. Setting up two material containers 43 and designing them as sliding-in and sliding-out structures can effectively adapt to this scenario.

[0046] Example B:

[0047] like Figure 5 As shown, this thermal shock resistance testing equipment also includes a positioning component 8, which includes a blocking part 81, a connecting part 82, and a fixing part 83. The blocking part 81 is disposed in the channel 42 inside the quartz tube 4 and can block the material from moving in one direction. The fixing part 83 can move relative to the quartz tube 4 and can be fixedly connected to the quartz tube 4. The two ends of the connecting part 82 are respectively connected to the blocking part 81 and the fixing part 83. When the fixing part 83 is fixedly connected to the quartz tube 4, the blocking part 81 is located inside the furnace cavity.

[0048] Unlike Embodiment A, this invention employs an external positioning element 8 to position the material. In use, the positioning element 8 is fixed in a first position (where the blocking part is located in the first furnace cavity). The material stops moving after reaching the blocking part 81 in the furnace cavity. The positioning element 8 is then moved to a second position and fixed (where the blocking part 81 is located in the second furnace cavity), while the material remains in the first furnace cavity for heating and heat preservation. During transfer, the material stops moving after reaching the blocking part 81, which is now in the second furnace cavity, and another temperature setting is performed. This design, despite the addition of the positioning element 8, allows the positioning element 8 to enter the second temperature field earlier, and does not affect the second temperature field during transfer.

[0049] More specifically, a guide groove 44 is provided on the upper wall of the quartz tube 4, and the fixing part 83 includes a sliding member 831 and a fixing member 832. One end of the sliding member 831 is slidably installed in the guide groove 44, and the other end of the sliding member 831 extends out from the upper wall of the quartz tube 4 and is connected to the fixing member 832. With this structure, the positioning member 8 can extend from the middle position of the quartz tube 4 to form a fixing structure, which can effectively shorten the length of the positioning member and improve manufacturability.

[0050] The connecting part 82 is a rod-shaped member 821, which extends along the length of the quartz tube 4. When one end of the rod-shaped member 821 is connected to the blocking part 81 and is located in the furnace cavity, the other end of the rod-shaped member 821 is connected to the fixing part 832 and extends outside the furnace cavity. This design is to ensure that the fixing part 83 is located outside the furnace cavity, which facilitates the fixing operation and also prevents the fixing part 83 from failing in a high-temperature environment.

[0051] In addition, such as Figure 6 As shown, the present invention also provides another solution for the material transfer furnace cavity: the thermal shock resistance testing equipment further includes a translation component 9, which is mounted on a fixed platform 1. The translation component 9 causes the relative positions of the first furnace body 2 and the second furnace body 3 with the quartz tube 4 to be translated. Compared with the lifting component 6, the translation component 9 is more stable, reliable, and inexpensive.

[0052] It should also be noted that the translation component 9 is very common, such as a slider module. The translation component used in this embodiment is not special, so it will not be explained or described in detail.

[0053] In summary, this thermal shock resistance testing equipment, under the premise of furnace cavity separation, effectively establishes a material transfer channel between furnace cavities at different temperatures, reduces the impact of transferring test objects in high and low temperature environments on the test environment, and ensures the effectiveness of the test.

[0054] In summary, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A thermal shock resistance testing device, comprising a fixed platform, a first furnace body, and a second furnace body, wherein the first furnace body and the second furnace body are mounted on the fixed platform, and each of the first furnace body and the second furnace body has a furnace cavity, characterized in that: It also includes a quartz tube. The first furnace body and the second furnace body are set separately. The quartz tube is installed in the furnace cavity of the first furnace body and the second furnace body. At least one end of the quartz tube can be opened to form a feeding port. The inside of the quartz tube forms a channel for the transfer of materials between the two furnace cavities. No isolation components are set inside the quartz tube.

2. The thermal shock resistance testing equipment according to claim 1, characterized in that: It also includes a support plate, which is horizontally installed on a fixed platform. The first furnace body, the second furnace body, and the quartz tube are fixedly installed on the support plate. A lifting assembly is provided between the support plate and the fixed platform, which keeps the support plate horizontal or tilts it.

3. The thermal shock resistance testing equipment according to claim 1, characterized in that: The first furnace body and the second furnace body are fixedly installed on a fixed platform in a horizontal direction. A lifting assembly is provided between the quartz tube and the fixed platform. The lifting assembly keeps the quartz tube horizontal or tilts it.

4. The thermal shock resistance testing equipment according to claim 1, characterized in that: It also includes an airflow generating device, with both ends of the quartz tube in an air-ventilated state. The airflow generating device includes an air nozzle and an air source. One end of the air nozzle is aligned with the channel inside the quartz tube, and the other end of the air nozzle is connected to the air source.

5. The thermal shock resistance testing equipment according to any one of claims 1-4, characterized in that: The quartz tube is provided with a material container, which is located in the furnace cavity. The material container is formed by the downward indentation of the lower wall of the quartz tube, and the material container allows material to fall into it.

6. The thermal shock resistance testing equipment according to claim 5, characterized in that: There are two material containers, which are located in the furnace cavities of the first furnace body and the second furnace body, respectively. The sidewalls of the material containers and the lower wall of the quartz tube are smoothly inclined.

7. The thermal shock resistance testing equipment according to any one of claims 1-4, characterized in that: It also includes a positioning component, which includes a blocking part, a connecting part, and a fixing part. The blocking part is disposed in the channel inside the quartz tube and can block the material from moving in one direction. The fixing part can move relative to the quartz tube and can be fixedly connected to the quartz tube. The two ends of the connecting part are respectively connected to the blocking part and the fixing part. When the fixing part is fixedly connected to the quartz tube, the blocking part is located inside the furnace cavity.

8. The thermal shock resistance testing equipment according to claim 7, characterized in that: The upper wall of the quartz tube is provided with a guide groove. The fixing part includes a sliding member and a fixing member. One end of the sliding member is slidably installed in the guide groove, and the other end of the sliding member extends out from the upper wall of the quartz tube and is connected to the fixing member.

9. The thermal shock resistance testing equipment according to claim 8, characterized in that: The connecting part is a rod-shaped member, the length of which extends along the length of the quartz tube. When the end of the rod-shaped member connected to the blocking part is located in the furnace cavity, the end of the rod-shaped member connected to the fixing part extends to the outside of the furnace cavity.

10. The thermal shock resistance testing equipment according to claim 1, characterized in that: It also includes a translation component, which is mounted on a fixed platform and causes the relative positions of the first furnace body and the second furnace body to be translated relative to the quartz tube.

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