Temperature shock test device and test method thereof

Abstract

The invention relates to a temperature impact test device and a test method thereof. The temperature impact test device comprises a turntable mechanism, a top cover mechanism, a steering driving mechanism, a temperature impact mechanism and a jacking mechanism. Wherein the turntable mechanism is in threaded connection with the top cover mechanism and is driven by the steering driving mechanism to rotate and switch to a hot air cavity or a cold air cavity, and the jacking mechanism lifts the air cavity to realize dynamic sealing; an inclined spoiler and a wave-shaped spoiler structure are arranged in the air cavity, and air flow is forced to circulate in combination with an accelerated flow assembly, so that the temperature uniformity is ensured; the heat insulation layer adopts a honeycomb cavity wall filling heat insulation piece to reduce energy loss; a sample is placed in the bearing seat with the via hole, and the position is fixed by the limiting plate. Rapid switching, uniform temperature field and efficient sealing are achieved, and the problems that a traditional device is slow in temperature switching and uneven in temperature distribution are solved.

Description

Technical Field

[0001] The present application relates to the technical field of testing equipment, in particular to a temperature shock test device and its test method. Background Art

[0002] With the development of temperature shock test technology, temperature shock test chambers have emerged, which are mainly used to simulate the scenario where products experience extreme temperature changes in a short time to test the performance and reliability of products under different temperature conditions.

[0003] In related technologies, there are two common device structures for traditional methods of temperature shock tests: two-chamber type and three-chamber type;

[0004] Among them, the two-chamber structure includes a high-temperature chamber and a low-temperature chamber. During the test, the sample is switched between the two chambers through a moving mechanism to achieve the impact of different temperature environments. The three-chamber structure is provided with an intermediate test area, and the high-temperature or low-temperature air flow is switched through a damper to make the intermediate test area reach the required temperature shock conditions.

[0005] However, the above-mentioned related devices of the two-chamber type and three-chamber type still have problems: the two-chamber device has problems of long switching time and slow temperature recovery, and the moving mechanism may vibrate the sample during operation, affecting the accuracy of the test results; the three-chamber device may have a situation where the temperature change rate is not fast enough or the air flow distribution is uneven. Summary of the Invention

[0006] Based on this, it is necessary to provide a temperature shock test device and its test method for the above problems, so as to achieve a smooth conversion of the sample to be tested in different temperature ranges, and at the same time solve the problems of low temperature conversion rate and poor temperature uniformity of traditional devices.

[0007] A temperature shock test device includes:

[0008] A turntable mechanism, including a turntable main body, an air inlet is provided at the bottom of the turntable main body, at least one sample carrier assembly is provided inside, an air outlet assembly and an accelerated flow assembly are respectively provided on the side wall, a heat insulation layer is added to the inner wall, and a turntable thread is provided on the outer wall of the top;

[0009] A top cover mechanism, including a top cover main body, a top cover thread is provided on its inner surface, the top cover thread is connected in a matching manner with the turntable thread, and a first seal is provided at the contact end between the top cover main body and the turntable main body;

[0010] A steering drive mechanism, including a steering drive motor, the output end of which is connected to a top cover connecting member at the top of the top cover main body through a coupling, and is used to drive the turntable mechanism to rotate;

[0011] The temperature shock mechanism includes a hot gas chamber and a cold gas chamber which are symmetrically arranged, and are respectively connected to a heating system and a refrigeration system through a hot gas delivery pipeline and a cold gas delivery pipeline; inclined flow deflectors are arranged in both the hot gas chamber and the cold gas chamber, and a wavy flow deflection structure is arranged on the bottom surface of the flow deflector; the hot gas chamber and the cold gas chamber are separated by a heat insulation plate, and the hot gas chamber, the cold gas chamber and the heat insulation plate as a whole form a shape matching the bottom surface of the turntable body;

[0012] The lifting mechanism is connected to the bottom of the temperature shock mechanism and is used to drive the temperature shock mechanism to abut against or separate from the turntable mechanism;

[0013] The turntable mechanism is driven by a steering drive mechanism to rotate and switch to align with the hot gas chamber or the cold gas chamber, and realizes sealed connection through the lifting mechanism, and hot gas or cold air flows through the flow deflector and evenly enters the turntable main body cavity.

[0014] In one embodiment, the structure of the sample carrying assembly includes a support rod connected to the bottom surface of the turntable main body, a carrying seat is assembled on the top of the support rod, and a sample is placed in the carrying seat; a plurality of through holes are formed in the carrying seat, and the through holes are used for allowing air flow to pass through the holes to realize rapid temperature change around the sample; a limiting plate is added at the outer edge position of the top of the carrying seat, and the height of the limiting plate is higher than the carrying plane of the carrying seat, and is used for restricting the sample to always be located in the carrying seat.

[0015] In one embodiment, the air outlet assembly includes an air outlet pipeline communicated with one side wall of the turntable main body, and a return pipeline 142 is added to the air outlet pipeline; a part of the air flow in the turntable main body cavity is discharged through the air outlet pipeline, and the other part enters the return pipeline after passing through the air outlet pipeline and returns to the turntable main body cavity again.

[0016] In one embodiment, the accelerating flow assembly includes a first accelerating flow pipeline, a fan unit and a second accelerating flow pipeline; the fan unit is arranged between the first accelerating flow pipeline and the second accelerating flow pipeline, and the air flow in the turntable main body cavity flows from the first accelerating flow pipeline to the second accelerating flow pipeline under the action of the fan unit and then returns to the turntable main body cavity again, accelerating the air flow movement in the turntable main body cavity, so that the uniformity of the temperature change in the cavity is better.

[0017] In one embodiment, hexagonal honeycomb cavity walls are evenly distributed on the heat insulation layer, and heat insulation parts are filled in the honeycomb cavity walls; preferably, the heat insulation parts are selected from one or more of asbestos boards and aerogels.

[0018] In one embodiment, a second sealing member and a third sealing member are respectively arranged at the tops of the hot gas chamber and the cold gas chamber for sealed connection with the bottom of the turntable main body; the second sealing member and the third sealing member are made of elastic materials and deform under the jacking pressure to achieve dynamic sealing.

[0019] On the other hand, the present application also provides a temperature shock test method for the above-mentioned temperature shock test device, including the following processes:

[0020] S1: Place the sample to be tested on the sample carrying component of the turntable mechanism;

[0021] S2: Assemble the top cover mechanism and the turntable mechanism by the cooperation of the top cover thread and the turntable thread;

[0022] S3: Drive the turntable mechanism to rotate through the steering drive mechanism so that the turntable mechanism is aligned with the hot air chamber or the cold air chamber;

[0023] S4: The lifting mechanism drives the temperature shock mechanism to rise so that the second seal or the third seal is in sealing contact with the bottom of the turntable body;

[0024] S5: The heating system or the refrigeration system passes air flow into the corresponding air chamber through the delivery pipeline, and the air flow is evenly diffused to the inside of the turntable body cavity through the spoiler to achieve the temperature shock of the sample;

[0025] S6: Adjust the air flow circulation in the cavity through the air outlet component and the accelerated flow component until the preset temperature shock cycle is completed.

[0026] In one embodiment, in step S3, the rotation of the turntable mechanism is positioned by the first limit member located on the side wall of the turntable mechanism abutting against the second limit member or the third limit member located on the side wall of the temperature shock mechanism.

[0027] In one embodiment, in step S5, the wavy spoiler structure on the bottom surface of the spoiler disturbs the air flow into a turbulent state, and guides the air flow to enter from the air inlet at the bottom of the turntable body through the inclined direction and quickly cover the periphery of the sample.

[0028] In one embodiment, in step S6, the fan unit of the accelerated flow component controls the air flow movement speed of the hot air or cold air inside the turntable body by changing the set start-stop frequency.

[0029] For the above-mentioned temperature shock test device and its test method, the turntable mechanism is driven to rotate by the steering drive mechanism, directly switched above the hot air chamber or the cold air chamber, and then sealed and connected through the action of the lifting mechanism, avoiding the mechanical vibration problem of the traditional two-chamber sample movement, and the switching time is greatly shortened;

[0030] The present application also has the following technical advantages:

[0031] (1) Through the precise cooperation of the turntable thread and the top cover thread, and combined with the multi-stage sealing design of the first seal, the second seal and the third seal, the present application ensures the airtightness when the air chamber is docked with the turntable;

[0032] (2) Through the mechanical limit design of the first limit member, the second limit member and the third limit member, the present application ensures the accurate positioning of the rotation angle of the turntable, avoiding air leakage caused by dislocation.

[0033] (3) An air outlet assembly and an accelerated flow assembly are arranged inside the turntable of the present application. The air flow is forced to circulate through the return pipeline and the fan unit, accelerating the temperature transfer efficiency in the cavity and reducing the temperature gradient at the same time.

[0034] (4) The spoiler plates inclinedly arranged in the hot air cavity and the cold air cavity of the present application. The wavy spoiler structure at the bottom thereof converts the linear air flow into turbulent flow, forcing the air flow to uniformly diffuse and enter the cavity of the turntable main body along the inclined direction from the air inlet.

[0035] (5) The hot air cavity and the cold air cavity of the present application are symmetric and independent. The heat and cold interference is isolated by the heat insulation plate, and the independent control of the heating system and the cooling system is combined to realize the rapid response to the temperature shock.

[0036] (6) The samples of the present application are placed in a carrier seat with multiple through holes. The air flow directly penetrates around the samples to achieve rapid heat exchange. At the same time, the limit plate is higher than the carrier plane to limit the samples and prevent the samples from accidentally falling out of the carrier seat.

[0037] (7) The honeycomb cavity wall of the inner wall of the turntable of the present application is filled with asbestos board or aerogel, significantly reducing the heat exchange inside and outside the turntable, ensuring the temperature stability in the cavity and reducing the energy consumption at the same time.

[0038] (8) When the jacking mechanism of the present application drives the temperature shock mechanism to abut against the bottom of the turntable, the second seal and the third seal adopt elastic materials, which adaptively deform under pressure to achieve dynamic sealing, avoiding the leakage risk caused by mechanical wear of the traditional static seal.

[0039] (9) The fan unit of the accelerated flow assembly of the present application starts and stops at a preset frequency to adjust the air flow movement speed, further realizing the air flow temperature uniformity. Description of the Drawings

[0040] Figure 1 is the overall structural schematic diagram of the present application in the explosion state.

[0041] Figure 2 is Figure 1 the rear view of

[0042] Figure 3 is the structural schematic diagram of the turntable mechanism of the present application.

[0043] Figure 4 is the structural schematic diagram of the turntable mechanism of the present application from another perspective.

[0044] Figure 5Schematic diagram of the sample carrier assembly of the present application.

[0045] Figure 6 Schematic diagram of the heat insulation layer of the present application.

[0046] Figure 7 Schematic diagram of the top cover mechanism of the present application.

[0047] Figure 8 Schematic diagram of the top cover mechanism of the present application from another perspective.

[0048] Figure 9 Schematic diagram of the steering drive mechanism of the present application.

[0049] Figure 10 Schematic diagram of the thermal shock mechanism of the present application. s

[0050] Figure 11 Cross-sectional view of the thermal shock mechanism of the present application.

[0051] Figure 12 Schematic diagram of the working state of the present application in a specific embodiment.

[0052] Wherein: 100, turntable mechanism; 200, top cover mechanism; 300, steering drive mechanism; 400, thermal shock mechanism; 500, lifting mechanism; 600, first limiting member; 700, second limiting member; 800, third limiting member;

[0053] 110, turntable main body; 120, air inlet; 130, sample carrier assembly; 140, air outlet assembly; 150, acceleration flow assembly; 160, heat insulation layer; 170, turntable thread;

[0054] 131, support rod; 132, bearing seat; 133, through hole; 134, limiting plate;

[0055] 141, air outlet pipeline; 142, return pipeline;

[0056] 151, first acceleration flow pipeline; 152, fan unit; 153, second acceleration flow pipeline;

[0057] 161, honeycomb cavity wall; 162, heat insulation member;

[0058] 210, top cover main body; 220, top cover connecting member; 230, top cover thread; 240, first sealing member;

[0059] 310, steering drive motor; 320, motor output end; 330, coupling;

[0060] 410. Hot gas chamber; 420. Cold gas chamber; 430. Turbulence plate; 440. Second seal; 450. Third seal; 460. Heating system; 470. Hot gas delivery pipeline; 480. Refrigeration system; 490. Cold gas delivery pipeline;

[0061] 411. Hot gas chamber main body; 412. Hot gas through hole; 421. Cold gas chamber main body; 422. Cold gas through hole; 431. Turbulence plate body; 432. Wavy turbulence structure. Detailed implementation manner

[0062] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manner of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0063] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0064] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, if there is a term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0065] In this application, unless otherwise clearly specified and defined, if terms such as "installed", "connected", "joined", "fixed", etc. appear, these terms shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0066] In this application, unless otherwise clearly specified and defined, if there is a description such as a first feature being "on" or "under" a second feature, its meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0067] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0068] Refer to Figure 1 - Figure 2 , which shows a schematic structural diagram of a temperature shock test device in an embodiment of this application. The temperature shock test device provided by an embodiment of this application includes a turntable mechanism 100, a top cover mechanism 200, a steering drive mechanism 300, a temperature shock mechanism 400 and a lifting mechanism 500. Through the coordinated work of each mechanism, rapid, stable switching and uniform temperature shock of the sample to be tested in different temperature environments are realized.

[0069] Combined with Figure 3 - Figure 4 As shown, in some embodiments, the turntable mechanism 100 includes a turntable main body 110; the turntable main body 110 is a cylindrical cavity structure, and an air inlet 120 is provided at the center of its bottom for introducing hot air flow or cold air flow. At least one sample carrying component 130 is arranged circumferentially inside the turntable main body 110, an air outlet component 140 and an accelerating flow component 150 are respectively arranged on the side wall, a heat insulation layer 160 is covered on the inner wall, and a turntable thread 170 is machined on the outer edge of the top.

[0070] Combined Figure 5 As shown, in some embodiments, the sample carrier assembly 130 includes a support rod 131 vertically fixed to the bottom surface of the turntable main body 110, and a carrier seat 132 is installed at its top; the carrier seat 132 is a hollow platform with a plurality of through holes 133 formed therein, allowing air flow to penetrate to accelerate the temperature change around the sample.

[0071] Furthermore, an annular limiting plate 134 is provided at the outer edge of the carrier seat 132, and its height is higher than the carrying plane, which is used to limit the position of the sample and prevent it from falling off during the test.

[0072] Furthermore, the air outlet assembly 140 includes an air outlet pipeline 141 communicating with the side wall of the turntable main body 110 and a branched return pipeline 142; a part of the air flow in the cavity is discharged through the air outlet pipeline 141, and the other part returns to the cavity through the return pipeline 142 to form a cycle to maintain pressure balance.

[0073] Furthermore, the accelerating flow assembly 150 is composed of a first accelerating flow pipeline 151, a fan unit 152 and a second accelerating flow pipeline 153; the fan unit 152 is located between the two pipelines, driving the air flow to flow from the first accelerating flow pipeline 151 through the second accelerating flow pipeline 153 and return to the cavity, and forcing a cycle to improve temperature uniformity.

[0074] Combined Figure 6 As shown, in some embodiments, the inner wall of the heat insulation layer 160 adopts a hexagonal honeycomb cavity wall 161 structure, and a heat insulation member 162 is filled in the cavity, effectively blocking the internal and external heat exchange and ensuring the temperature stability inside the cavity.

[0075] Specifically, the material of the heat insulation member 162 can be selected from asbestos board or aerogel.

[0076] Combined Figure 7 - Figure 8 As shown, in some embodiments, the top cover mechanism 200 includes a top cover main body 210, and a top cover thread 230 is provided on its inner surface, which is matched with the turntable thread 170; a top cover connecting member 220 is provided at the top of the top cover main body 210 for connecting with the steering drive mechanism 300. A first seal 240 is installed at the contact end between the top cover main body 210 and the turntable main body 110, and its shape matches the top surface of the turntable main body 110 to ensure airtightness.

[0077] Combined Figure 9 As shown, in some embodiments, the steering drive mechanism 300 includes a steering drive motor 310, and its motor output end 320 is connected to the top cover connecting member 220 through a coupling 330; the motor 310 drives the overall rotation of the top cover mechanism 200 and the turntable mechanism 100, realizing the precise switching of the turntable mechanism 100 between the hot air cavity 410 and the cold air cavity 420.

[0078] CombinedFigure 10 - Figure 11 As shown, in some embodiments, the thermal shock mechanism 400 symmetrically arranges a hot gas chamber 410 and a cold gas chamber 420, and the two are isolated by a heat insulation plate; an elastic second seal 440 and a third seal 450 are respectively arranged at the tops of the hot gas chamber 410 and the cold gas chamber 420 for dynamic sealing with the bottom of the turntable body 110.

[0079] Further, the hot gas chamber 410 includes a hot gas chamber main body 411, a hot gas through hole 412 is opened at the bottom, and it is connected to a heating system 460 through a hot gas delivery pipeline 470; a spoiler 430 is obliquely installed inside, and the bottom surface of the spoiler body 431 is a wavy spoiler structure 432, which converts the linear air flow into a turbulent flow and evenly guides it to the air inlet 120.

[0080] Further, the cold gas chamber 420 includes a cold gas chamber main body 421, a cold gas through hole 422 is opened at the bottom, and it is connected to a refrigeration system 480 through a cold gas delivery pipeline 490; the structure of the spoiler 430 inside the cold gas chamber 420 is the same as that of the hot gas chamber 410 to ensure uniform diffusion of the cold air flow.

[0081] In some embodiments, the lifting mechanism 500 is installed at the bottom of the thermal shock mechanism 400; when the turntable mechanism 100 rotates above the target gas chamber, the lifting mechanism 500 drives the thermal shock mechanism 400 to rise, so that the second seal 440 or the third seal 450 presses against the bottom of the turntable body 110 to form a dynamic seal. The elastic seal deforms adaptively under pressure to avoid leakage.

[0082] Please continue to refer to Figure 1 - Figure 2 , the limiting structure of the present application includes:

[0083] The first limiting member 600 is fixed to the side wall of the turntable mechanism 100;

[0084] The second limiting member 700 and the third limiting member 800 are respectively arranged on the side walls of the hot gas chamber 410 and the cold gas chamber 420;

[0085] When the turntable rotates, the first limiting member 600 abuts against the second limiting member 700 or the third limiting member 800 to ensure accurate alignment of the turntable and the gas chamber.

[0086] Please combine with Figure 12 As shown, in actual work, the test method process of the present application is as follows:

[0087] Sample loading: Place the sample to be tested in the carrier seat 132, and the limiting plate 134 prevents displacement;

[0088] Mechanism assembly: The top cover thread 230 cooperates with the turntable thread 170, and the first seal 240 is pressed tightly;

[0089] Temperature switching: The steering drive motor 310 drives the turntable mechanism 100 to rotate until the first limiting member 600 abuts and positions against the target air chamber limiting member (700 or 800).

[0090] Air chamber sealing: The lifting mechanism 500 lifts the temperature shock mechanism 400, and the second sealing member 440 or the third sealing member 450 presses against the turntable body 110.

[0091] Temperature shock: The heating system 460 or the cooling system 480 passes air flow into the air chamber through the delivery pipeline (470 or 490), and the spoiler 430 evenly guides the turbulent flow into the turntable cavity.

[0092] Air flow regulation: The fan unit 152 starts and stops at a preset frequency, the acceleration flow component 150 forces the circulating air flow and accelerates the air flow movement speed, and the air outlet component 140 balances the pressure in the cavity until the test cycle is completed.

[0093] In this application, the rotation of the turntable replaces mechanical movement, avoiding the vibration during the movement of the sample by the traditional two-chamber type and shortening the switching time. At the same time, the wavy structure of the spoiler 430 combined with the acceleration flow component 150 makes the temperature at different gradients in the cavity uniform. The second sealing member and the third sealing member are made of elastic materials and adaptively deform under the lifting pressure to achieve dynamic sealing and ensure the airtightness of the cavity. In addition, through holes 133 are provided on the bearing seat 132 to ensure that the cold / hot air flow passes through, realizing a rapid change in the temperature around the sample. Finally, the honeycomb cavity wall 161 and the heat insulation member 162 cooperate to reduce energy loss and lower the energy consumption.

[0094] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0095] The above-described embodiments merely represent several implementation manners of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can still be made, and these all belong to the protection scope of this application. Therefore, the protection scope of the patent of this application should be subject to the appended claims.

Claims

1. A temperature shock test device, characterized in that, Comprising: A turntable mechanism, including a turntable main body, an air inlet is provided at the bottom of the turntable main body, at least one sample carrier assembly is provided inside, an air outlet assembly and an acceleration flow assembly are respectively provided on the side walls, a heat insulation layer is additionally provided on the inner wall, and a turntable thread is provided on the outer wall of the top; A top cover mechanism, including a top cover main body, a top cover thread is provided on its inner surface, the top cover thread is connected in a mating manner with the turntable thread, and a first sealing member is provided at the contact end between the top cover main body and the turntable main body; A steering drive mechanism, including a steering drive motor, the output end of which is connected to a top cover connecting member at the top of the top cover main body through a coupling, and is used to drive the turntable mechanism to rotate; A temperature shock mechanism, including a hot gas chamber and a cold gas chamber symmetrically arranged, which are respectively connected to a heating system and a refrigeration system through a hot gas delivery pipeline and a cold gas delivery pipeline; inclined flow deflectors are provided in both the hot gas chamber and the cold gas chamber, and a wavy flow deflector structure is provided on the bottom surface of the flow deflector; the hot gas chamber and the cold gas chamber are separated by a heat insulation plate, and the hot gas chamber, the cold gas chamber and the heat insulation plate as a whole form a shape matching the bottom surface of the turntable main body; A jacking mechanism, connected to the bottom of the temperature shock mechanism, and is used to drive the temperature shock mechanism to abut against or separate from the turntable mechanism; Wherein, the turntable mechanism is driven by the steering drive mechanism to rotate and switch to align with the hot gas chamber or the cold gas chamber, and a sealed connection is realized through the jacking mechanism, and hot gas or cold gas flows through the flow deflector and evenly enters the cavity of the turntable main body.

2. The temperature shock test device according to claim 1, characterized in that, The structure of the sample carrier assembly includes a support rod connected to the bottom surface of the turntable main body, a carrier seat is assembled on the top of the support rod, and a sample is placed in the carrier seat; A plurality of through holes are provided on the carrier seat, and the through holes are used to allow air flow to pass through the holes to realize a rapid change in temperature around the sample; A limiting plate is additionally provided at the outer edge position of the top of the carrier seat, and the height of the limiting plate is higher than the carrying plane of the carrier seat, and is used to limit the sample to always be located within the carrier seat.

3. The temperature shock test device according to claim 1, wherein The air outlet assembly includes an air outlet pipeline communicated with one side wall of the turntable main body, and a return pipeline 142 is additionally provided on the air outlet pipeline; a part of the air flow in the cavity of the turntable main body is discharged through the air outlet pipeline, and the other part enters the return pipeline after passing through the air outlet pipeline and then returns to the cavity of the turntable main body again.

4. The temperature shock test device according to claim 1, characterized in that, The acceleration flow assembly includes a first acceleration flow pipeline, a fan unit and a second acceleration flow pipeline; The fan unit is arranged between the first acceleration flow pipeline and the second acceleration flow pipeline, and the air flow in the cavity of the turntable main body flows from the first acceleration flow pipeline to the second acceleration flow pipeline under the action of the fan unit and then returns to the cavity of the turntable main body again, accelerating the air flow movement in the cavity of the turntable main body, thereby improving the uniformity of temperature change in the cavity.

5. The temperature shock test device according to claim 1, wherein, Hexagonal honeycomb cavity walls are evenly distributed on the heat insulation layer, and heat insulation parts are filled in the honeycomb cavity walls.

6. The temperature shock test device according to claim 1, wherein Second sealing members and third sealing members are respectively provided at the tops of the hot gas chamber and the cold gas chamber, and are used for sealed connection with the bottom of the turntable main body; The second sealing member and the third sealing member are made of an elastic material and deform under the jacking pressure to realize dynamic sealing.

7. A temperature shock test method, characterized in that, For the temperature shock test device according to any one of claims 1-6, including the following process: S1: Place the sample to be tested on the sample carrier assembly of the turntable mechanism; S2: Assemble the top cover mechanism and the turntable mechanism by matching the top cover thread with the turntable thread; S3: driving the turntable mechanism to rotate through the steering drive mechanism so that the turntable mechanism is aligned with the hot air cavity or the cold air cavity; S4: The lifting mechanism drives the temperature shock mechanism to rise, so that the second seal or the third seal is in sealing contact with the bottom of the turntable body; S5: The heating system or cooling system introduces air into the corresponding air cavity through the delivery pipeline. The air flow is evenly diffused into the main cavity of the turntable through the spoiler to achieve temperature shock to the sample; S6: regulating the air flow circulation in the cavity through the air outlet component and the accelerating flow component until the preset temperature shock cycle is completed.

8. The temperature shock test method according to claim 7, characterized in that, In step S3, the turntable mechanism rotates and is positioned by a first stopper located on a side wall of the turntable mechanism contacting a second stopper or a third stopper located on a side wall of the temperature shock mechanism.

9. The temperature shock test method according to claim 7, wherein In step S5, the wavy spoiler structure on the bottom surface of the spoiler disturbs the airflow into a turbulent state, and guides the airflow in an inclined direction to enter from the air inlet at the bottom of the turntable body and quickly cover the area around the sample.

10. The temperature shock test method according to claim 7, characterized in that In step S6, the fan unit of the flow acceleration component changes the set start and stop frequency to control the airflow speed of the hot air or cold air inside the turntable body.

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