Optical measurement system of component changing along with temperature

Abstract

The invention discloses an optical measuring system of a component changing along with temperature, which comprises a medium temperature control circulating device, an optical testing device and a data acquisition and analysis device, and is characterized in that the medium temperature control circulating device comprises a circulating pipeline, and the circulating pipeline is sequentially connected with at least one heating part, at least one cooling part and at least one temperature measuring part; the optical testing device is internally provided with at least one cavity, the cavity is connected with the input end and the output end of the circulating pipeline, the cavity is internally provided with at least one group of temperature-sensing movable parts which move along with the temperature change of the medium, and at least one group of laser measuring parts for measuring the displacement of the temperature-sensing movable parts are arranged below the temperature-sensing movable parts; the laser measuring part is connected with the data acquisition and analysis device; according to the invention, the substance changing along with the temperature can be prevented from directly contacting with the liquid medium and the external environment, adverse effects on the displacement measurement result of the substance changing along with the temperature caused by sharp change of the temperature of the liquid medium and the external environment temperature are avoided, and meanwhile, the displacement of the substance changing along with the temperature can be smoothly and accurately measured and read; and the measurement precision of the temperature-dependent displacement of the material changing along with the temperature is further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of measuring temperature-dependent component, and relates to an optical measuring system of the temperature-dependent component. Background Art

[0002] Temperature-dependent materials are a special type of temperature-sensitive materials. Under different temperature change environments, temperature-dependent materials will produce deformation displacements corresponding to temperature changes. Since each type of temperature-dependent material has different dimensions and temperature sensing performance, it is necessary to test the volume change performance of the temperature-dependent material in sensing high and low temperatures, and to design special equipment and devices for testing. The prior art often uses a mechanical displacement measurement method, that is, connecting the temperature-dependent material with a mechanical displacement component. When the temperature-dependent material undergoes a volume change and produces a displacement, the mechanical displacement component is driven to move, and the temperature change of the temperature-dependent material is detected by reading the displacement of the mechanical displacement component.

[0003] However, the above detection method has the following defects: 1. When the temperature-changing material and the mechanical displacement component are mechanically displaced, it is easy to get stuck, and the displacement indication of the mechanical displacement component changes too quickly, making it difficult to read accurately with the naked eye; 2. Temperature-dependent materials are in direct contact with the temperature medium and the external environment. When the temperature of the temperature medium changes drastically, the temperature-dependent displacement changes drastically, making it difficult to accurately measure and read. In addition, temperature-dependent materials are affected by the temperature of the external environment, which will also reduce the accuracy of the final measurement results.

[0004] Therefore, in view of the above-mentioned defects in the prior art, the present invention discloses an optical measurement system for temperature-dependent components. Summary of the invention

[0005] The object of the present invention is to provide an optical measurement system for a temperature-dependent component, which can prevent the temperature-dependent material from directly contacting the liquid medium and the external environment, and avoid the adverse effects of sudden changes in the temperature of the liquid medium and the external environment temperature on the measurement results of the displacement of the temperature-dependent material, while ensuring that the temperature-dependent displacement of the temperature-dependent material can be measured and read smoothly and accurately, further improving the measurement accuracy of the temperature-dependent displacement of the temperature-dependent material.

[0006] The present invention is achieved through the following technical solutions: An optical measurement system for a temperature-dependent component comprises a medium temperature control circulation device, an optical testing device, and a data acquisition and analysis device, wherein the medium temperature control circulation device comprises a circulation pipeline, and at least one heating part, at least one cooling part, and at least one temperature measuring part are sequentially connected to the circulation pipeline; at least one cavity is arranged in the optical testing device, and the cavity is connected to an input end and an output end of the circulation pipeline, and at least one group of temperature-sensitive active parts that move with changes in medium temperature are arranged inside the cavity, and at least one group of laser measuring parts for measuring the displacement of the temperature-sensitive active parts are arranged below the temperature-sensitive active parts; the laser measuring parts are connected to the data acquisition and analysis device.

[0007] The liquid medium is heated by the heating part in the medium temperature control circulation device, and the liquid medium is cooled by the cooling part, thereby regulating the temperature of the liquid medium. The liquid medium is transported to the cavity inside the optical testing device, so that the temperature-sensitive active part contacts the liquid medium. When the temperature of the liquid medium increases, the active side of the temperature-sensitive active part moves in a direction away from the cavity, and when the temperature of the liquid medium decreases, the active side of the temperature-sensitive active part moves in a direction close to the cavity. The displacement of the temperature-sensitive active part can be measured by the laser measurement part, and the temperature of the liquid medium is measured by the temperature measurement part at the same time. The displacement and temperature data are sent to the data acquisition and analysis device. The functional relationship between temperature and displacement is established by the data acquisition and analysis device, and the displacement change of the temperature-sensitive active part under the action of the liquid medium under different temperature changes can be accurately and clearly obtained.

[0008] In order to better realize the present invention, further, the temperature-sensing active part includes a temperature-sensing active part, a driven active part, an elastic part, and a shell; the interior of the shell is provided with a first cavity and a second cavity separated from each other; the interior of the first cavity is provided with a temperature-sensing active part; the first cavity is connected to a circulation pipeline; the interior of the second cavity is provided with a driven active part; the active side of the temperature-sensing active part abuts against one side of the driven active part, an elastic part is provided between the side of the driven active part away from the temperature-sensing active part and the interior of the second cavity, and the end of the driven active part away from the temperature-sensing active part is provided corresponding to the laser measuring part.

[0009] In order to better realize the present invention, further, the temperature-sensing movable part includes a temperature-sensing shell and a temperature-sensing telescopic rod. The temperature-sensing shell is arranged inside the first cavity. The temperature-sensing telescopic rod is slidably arranged inside the temperature-sensing shell. The temperature-sensing telescopic rod is completely isolated from the first cavity, and one end of the temperature-sensing telescopic rod extends to the inside of the second cavity and abuts against one end of the driven movable part.

[0010] In order to better implement the present invention, further, one end of the temperature sensing housing extends from the first cavity to the inside of the second cavity, and a balancing sleeve is sleeved on the outer side of the portion of the temperature sensing housing located inside the first cavity.

[0011] In order to better implement the present invention, further, a first seal is provided on the outside of the portion of the temperature sensing housing extending between the first cavity and the second cavity, and a second seal is provided between the outside of the balancing sleeve and the cavity wall of the first cavity.

[0012] In order to better realize the present invention, further, the driven movable part includes a driven sleeve, a fixed sleeve, and a connecting rod. The fixed sleeve is fixedly installed at one end of the second cavity away from the first cavity. The driven sleeve is movably arranged inside the second cavity. The end of the driven sleeve away from the fixed sleeve abuts against the movable side of the temperature-sensing movable part. A connecting rod is arranged at one end of the driven sleeve close to the fixed sleeve. The connecting rod passes through the fixed sleeve and extends to the outside of the second cavity. An elastic part is arranged between the driven sleeve and the fixed sleeve.

[0013] In order to better realize the present invention, further, the medium temperature control circulation device includes a liquid storage tank, an oil pump, a cooling part, a heating part, and a temperature and pressure control component arranged on the circulation pipeline, and the input end and the output end of the circulation pipeline are connected to the cavity inside the optical testing device through a ball valve.

[0014] In order to better realize the present invention, further, the temperature and pressure control component includes a pressure controller, a pressure gauge, and a temperature sensor which are sequentially arranged on the circulation pipeline, and the pressure controller, the pressure gauge, and the temperature sensor are all connected to the data acquisition and analysis device.

[0015] In order to better implement the present invention, further, a compressor is provided between the cooling part and the heating part.

[0016] In order to better implement the present invention, further, the data acquisition and analysis device includes a signal amplifier, a data collector, and an analysis terminal. The laser measurement unit is connected to the data collector through the signal amplifier, and the data collector is connected to the analysis terminal.

[0017] Compared with the prior art, the present invention has the following advantages and beneficial effects: (1) The present invention can control the temperature and pressure of the circulating liquid medium by providing a medium temperature control circulation device, so that the temperature of the liquid medium is maintained within a relatively stable range, thereby avoiding the temperature drastic change of the liquid medium, thereby avoiding the adverse effect of the temperature drastic change on the measurement accuracy of the temperature-dependent displacement of the final temperature-dependent component; (2) The present invention sets up an independent first cavity and a second cavity, sets a temperature-sensitive movable part in the first cavity, and sets a driven movable part in the second cavity. The temperature-sensitive movable part generates a displacement due to temperature, thereby driving the driven movable part to move. The displacement of the driven movable part is accurately measured by a laser measuring part, thereby ensuring the accuracy of the final measurement result. (3) The present invention arranges the temperature-sensitive telescopic rod inside the temperature-sensitive shell to prevent the liquid medium from directly contacting the temperature-sensitive telescopic rod. At the same time, a driven movable part is arranged to prevent the temperature-sensitive telescopic rod from directly contacting the external environment. Ultimately, the adverse effects of the sudden change of the liquid medium temperature and the change of the external environment temperature on the measurement results of the temperature-dependent displacement of the temperature-sensitive telescopic rod are avoided, thereby improving the accuracy of the final measurement results. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of an optical measurement system for temperature-dependent components; Figure 2 is a schematic diagram of the structure of an optical testing device; Figure 3 It is a structural schematic diagram of a temperature sensing movable part and a driven movable part; Figure 4 It is a schematic diagram of a medium temperature control circulation device; Figure 5 Schematic diagram of the data acquisition and analysis device.

[0019] Among them: A1-temperature sensing movable part; A2-driven movable part; A3-elastic part; A4-housing; A11-temperature sensing housing; A12-temperature sensing telescopic rod; A13-balancing sleeve; A21-driven sleeve; A22-fixed sleeve; A23-connecting rod; 100-first cavity; 200-second cavity. DETAILED DESCRIPTION

[0020] The following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0021] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the present invention explicitly states otherwise, singular forms are also intended to include plural forms. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0022] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0023] Terminology explanation section: The terms "install", "connect", "connect", "fixed" and the like in the present invention should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements, or an interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0024] Embodiment 1: An optical measurement system for a temperature-dependent component of this embodiment, such as Figure 1 As shown, it includes a medium temperature control circulation device, an optical testing device, and a data acquisition and analysis device. The medium temperature control circulation device includes a circulation pipeline, and the circulation pipeline is sequentially connected with at least one heating part, at least one cooling part, and at least one temperature measuring part; at least one cavity is arranged in the optical testing device, and the cavity is connected to the input end and the output end of the circulation pipeline. At least one group of temperature-sensing active parts that move with the change of medium temperature are arranged inside the cavity, and at least one group of laser measuring parts for measuring the displacement of the temperature-sensing active parts are arranged below the temperature-sensing active parts; the laser measuring parts are connected to the data acquisition and analysis device.

[0025] The medium temperature control circulation device includes a circulation pipeline, which includes at least one liquid outlet and at least one liquid return end. The liquid outlet and the liquid return end are both connected to the cavity inside the optical testing device. The liquid medium is input into the cavity through the liquid outlet, and the liquid medium in the cavity is returned to the circulation pipeline through the liquid return end, so as to realize the circulation of the liquid medium. At the same time, the liquid medium is heated by the heating part on the circulation pipeline, and the liquid medium is cooled by the cooling part, so as to control the temperature of the liquid medium.

[0026] After the liquid medium enters the cavity, it contacts the temperature-sensitive active part. The temperature-sensitive active part can produce a corresponding volume change according to the change of the ambient temperature, that is, a displacement that changes with the temperature. When the temperature of the liquid medium rises, the temperature-sensitive active part expands and moves away from the cavity. When the temperature of the liquid medium drops, the temperature-sensitive active part contracts and moves toward the cavity. When the temperature-sensitive active part produces a displacement, the displacement of the temperature-sensitive active part can be accurately measured by the laser measurement part, and the measured displacement and temperature are sent to the data acquisition and analysis device. The functional relationship between the displacement of the temperature-sensitive active part and the temperature change is established by the data acquisition and analysis device, so that the volume change of the temperature-sensitive active part under different temperature changes can be accurately and intuitively displayed.

[0027] Furthermore, the laser measuring part includes a laser displacement sensor, and the laser emitted by the laser displacement sensor is coaxially arranged with the temperature sensing active part.

[0028] Embodiment 2: An optical measurement system for a temperature-dependent component is improved on the basis of Example 1, such as Figure 2 As shown, the temperature-sensing movable part includes a temperature-sensing movable part A1, a driven movable part A2, an elastic part A3, and a shell A4. The interior of the shell A4 is provided with a first cavity 100 and a second cavity 200 separated from each other. The interior of the first cavity 100 is provided with the temperature-sensing movable part A1, and the first cavity 100 is connected to a circulation pipeline. The interior of the second cavity 200 is provided with a driven movable part A2. The movable side of the temperature-sensing movable part A1 is abutted against one side of the driven movable part A2. An elastic part A3 is provided between the side of the driven movable part A2 away from the temperature-sensing movable part A1 and the interior of the second cavity 200. The end of the driven movable part A2 away from the temperature-sensing movable part A1 is provided corresponding to the laser measuring part.

[0029] After the liquid medium enters the first cavity 100, it contacts the temperature-sensing movable part A1, and the temperature-sensing movable part A1 changes in volume. When the temperature of the liquid medium rises, the temperature-sensing movable part A1 moves toward the direction close to the second cavity 200, and drives the driven movable part A2 to move. At this time, the displacement of the driven movable part A2 can be measured by the laser measuring part. When the temperature of the liquid medium drops, the temperature-sensing movable part A1 moves toward the direction away from the second cavity 200, and drives the driven movable part A2 to move in the opposite direction under the elastic force of the elastic part A3. At this time, the displacement of the driven movable part A2 can be measured by the laser measuring part. Furthermore, the temperature-sensing movable part A1 and the driven movable part A2 are respectively located inside the first cavity 100 and the second cavity 200 which are completely isolated and independent, and only the first cavity 100 is filled with liquid medium, so as to avoid the liquid medium from contacting with the driven movable part A2 and the elastic part A3 inside the second cavity 200, thereby preventing the temperature change of the liquid medium from causing the volume change of the driven movable part A2 and the elastic part A3 and affecting the final measurement accuracy.

[0030] The other parts of this embodiment are the same as those of Embodiment 1, and thus will not be described in detail.

[0031] Embodiment 3: An optical measurement system for a temperature-dependent component is improved on the basis of Embodiment 1 or 2, such as Figure 3 As shown, the temperature-sensing movable part A1 includes a temperature-sensing shell A11 and a temperature-sensing telescopic rod A12. The temperature-sensing shell A11 is arranged inside the first cavity 100. The temperature-sensing telescopic rod A12 is slidably arranged inside the temperature-sensing shell A11. The temperature-sensing telescopic rod A12 is completely isolated from the first cavity 100, and one end of the temperature-sensing telescopic rod A12 extends to the inside of the second cavity 200 and abuts against one end of the driven movable part A2.

[0032] The liquid medium enters the first cavity 100 and contacts the temperature-sensing shell A11, but does not contact the temperature-sensing telescopic rod A12. The temperature is transferred to the temperature-sensing telescopic rod A12 through the temperature-sensing shell A11, thereby avoiding the situation where the displacement of the temperature-sensing telescopic rod A12 changes drastically when the temperature of the liquid medium changes drastically, thereby ensuring the accuracy of the final measurement result.

[0033] Furthermore, one end of the temperature sensing housing A11 extends from the first cavity 100 to the inside of the second cavity 200, and a balancing sleeve A13 is provided outside the portion of the temperature sensing housing A11 located inside the first cavity 100. The balancing sleeve A13 further prevents leakage of the liquid medium and prevents the liquid medium from directly contacting the temperature sensing telescopic rod A12.

[0034] Furthermore, a first seal is provided on the outside of the portion of the temperature sensing housing A11 extending between the first cavity 100 and the second cavity 200, and a second seal is provided between the outside of the balancing sleeve A13 and the cavity wall of the first cavity 100. By providing the first seal and the second seal, it is prevented that the liquid medium leaks into the second cavity 200 under high pressure, and the possibility of the liquid medium directly contacting the temperature sensing telescopic rod A12 is eliminated.

[0035] The other parts of this embodiment are the same as those of Embodiment 1 or 2, and thus will not be described in detail.

[0036] Embodiment 4: An optical measurement system for a temperature-dependent component is improved on the basis of any one of embodiments 1-3, such as Figure 3 As shown, the driven movable part A2 includes a driven sleeve A21, a fixed sleeve A22, and a connecting rod A23. The fixed sleeve A22 is fixedly installed at the end of the second cavity 200 away from the first cavity 100. The driven sleeve A21 is movably arranged inside the second cavity 200. The end of the driven sleeve A21 away from the fixed sleeve A22 abuts against the movable side of the temperature-sensing movable part A1. The end of the driven sleeve A21 close to the fixed sleeve A22 is provided with a connecting rod A23. The connecting rod A23 passes through the fixed sleeve A22 and extends to the outside of the second cavity 200. An elastic part A3 is provided between the driven sleeve A21 and the fixed sleeve A22.

[0037] The fixed sleeve A22 is fixedly installed at one end of the second cavity 200 away from the first cavity 100 by connecting screws, and a through hole for the connecting rod A23 to pass through is set at the center of the fixed sleeve A22. When the temperature-sensitive telescopic rod A12 generates displacement under the action of temperature change, it drives the driven sleeve A21 to slide inside the second cavity 200, and the driven sleeve A21 drives the connecting rod A23 to move. The displacement of the connecting rod A23 is directly measured by the laser measurement unit, which is equivalent to measuring the displacement of the temperature-sensitive telescopic rod A12. By setting the driven movable part A2 and the second cavity 200, the temperature-sensitive telescopic rod A12 is prevented from directly contacting the external environment, thereby avoiding the adverse effects of the external environment temperature change on the displacement of the temperature-sensitive telescopic rod A12.

[0038] The other parts of this embodiment are the same as any one of Embodiments 1-3, so they are not described again.

[0039] Embodiment 5: An optical measurement system for a temperature-dependent component is improved on the basis of any one of embodiments 1-4, such as Figure 4As shown, the medium temperature control circulation device includes a liquid storage tank, an oil pump, a cooling unit, a heating unit, and a temperature and pressure control component arranged on a circulation pipeline, and the input end and the output end of the circulation pipeline are connected to the cavity inside the optical testing device through a ball valve. The liquid medium stored in the liquid storage tank is transported along the circulation pipeline by the oil pump, the liquid medium is cooled by the cooling unit, the liquid medium is heated by the heating unit, and the pressure and temperature of the liquid medium finally entering the first cavity 100 are controlled in real time by the temperature and pressure control component.

[0040] Furthermore, the cooling unit includes any one of a cooling fan, a tower cooler, and a plate cooler.

[0041] Furthermore, the heater includes any one of an electric heating tube, a hot air blower, and an infrared heater.

[0042] Furthermore, the temperature and pressure control assembly includes a pressure controller, a pressure gauge, and a temperature sensor which are sequentially arranged on the circulation pipeline, and the pressure controller, the pressure gauge, and the temperature sensor are all connected to the data acquisition and analysis device. The pressure of the liquid medium is regulated by the pressure controller, the pressure of the liquid medium is detected by the pressure gauge, and the temperature of the liquid medium is detected in real time by the temperature sensor, and the data is sent to the data acquisition and analysis device.

[0043] Furthermore, a compressor is provided between the cooling part and the heating part.

[0044] The other parts of this embodiment are the same as any one of Embodiments 1-4, so they are not described again.

[0045] Embodiment 6: An optical measurement system for a temperature-dependent component is improved on the basis of any one of embodiments 1-5, such as Figure 5 As shown, the data acquisition and analysis device includes a signal amplifier, a data collector, and an analysis terminal. The laser measurement unit is connected to the data collector through the signal amplifier, and the data collector is connected to the analysis terminal.

[0046] The laser measurement unit converts the detected displacement into an electrical signal, and amplifies the electrical signal through a signal amplifier and then transmits it to the data collector. The temperature of the liquid medium detected by the temperature sensor and the pressure of the liquid medium detected by the pressure gauge are directly transmitted to the data collector. The collected data is sent to the analysis terminal through the data collector. The analysis terminal is used to establish a functional relationship between the displacement and the temperature and pressure changes.

[0047] The other parts of this embodiment are the same as any one of Embodiments 1-5, so they are not described again.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention fall within the protection scope of the present invention.

Claims

1. An optical measurement system for temperature-dependent components, characterized in that: It includes a medium temperature control circulation device, an optical testing device, and a data acquisition and analysis device. The medium temperature control circulation device includes a circulation pipeline, and at least one heating part, at least one cooling part, and at least one temperature measuring part are connected to the circulation pipeline in sequence; at least one cavity is arranged in the optical testing device, and the cavity is connected to the input end and the output end of the circulation pipeline, and at least one group of temperature-sensitive active parts that move with the change of medium temperature are arranged inside the cavity, and at least one group of laser measuring parts for measuring the displacement of the temperature-sensitive active parts are arranged below the temperature-sensitive active parts; the laser measuring parts are connected to the data acquisition and analysis device.

2. The optical measurement system for temperature-dependent components according to claim 1, characterized in that: The temperature-sensing movable part comprises a temperature-sensing movable part (A1), a driven movable part (A2), an elastic part (A3), and a shell (A4); a first cavity (100) and a second cavity (200) separated from each other are arranged inside the shell (A4); the temperature-sensing movable part (A1) is arranged inside the first cavity (100); the first cavity (100) is connected to a circulation pipeline; the driven movable part (A2) is movably arranged inside the second cavity (200); the movable side of the temperature-sensing movable part (A1) is in contact with one side of the driven movable part (A2); an elastic part (A3) is arranged between a side of the driven movable part (A2) away from the temperature-sensing movable part (A1) and the inside of the second cavity (200); and an end of the driven movable part (A2) away from the temperature-sensing movable part (A1) is arranged corresponding to the laser measuring part.

3. The optical measurement system for temperature-dependent components according to claim 2, characterized in that: The temperature-sensing movable part (A1) comprises a temperature-sensing shell (A11) and a temperature-sensing telescopic rod (A12); the temperature-sensing shell (A11) is arranged inside the first cavity (100); a temperature-sensing telescopic rod (A12) is slidably arranged inside the temperature-sensing shell (A11); the temperature-sensing telescopic rod (A12) is completely isolated from the first cavity (100); and one end of the temperature-sensing telescopic rod (A12) extends into the second cavity (200) and abuts against one end of the driven movable part (A2).

4. The optical measurement system for temperature-dependent components according to claim 3, characterized in that: One end of the temperature sensing housing (A11) extends from the first cavity (100) to the inside of the second cavity (200), and a balancing sleeve (A13) is sleeved on the outer side of the portion of the temperature sensing housing (A11) located inside the first cavity (100).

5. The optical measurement system for temperature-dependent components according to claim 4, characterized in that: A first seal is provided on the outside of the portion of the temperature sensing housing (A11) extending between the first cavity (100) and the second cavity (200), and a second seal is provided between the outside of the balancing sleeve (A13) and the cavity wall of the first cavity (100).

6. An optical measurement system for temperature-dependent components according to any one of claims 1 to 5, characterized in that: The driven movable part (A2) comprises a driven sleeve (A21), a fixed sleeve (A22), and a connecting rod (A23); the fixed sleeve (A22) is fixedly mounted on an end of the second cavity (200) away from the first cavity (100); the driven sleeve (A21) is movably arranged inside the second cavity (200); an end of the driven sleeve (A21) away from the fixed sleeve (A22) abuts against a movable side of the temperature-sensitive movable part (A1); an end of the driven sleeve (A21) close to the fixed sleeve (A22) is provided with a connecting rod (A23); the connecting rod (A23) passes through the fixed sleeve (A22) and extends to the outside of the second cavity (200); and an elastic part (A3) is provided between the driven sleeve (A21) and the fixed sleeve (A22).

7. An optical measurement system for temperature-dependent components according to any one of claims 1 to 5, characterized in that: The medium temperature control circulation device includes a liquid storage tank, an oil pump, a cooling unit, a heating unit, and a temperature and pressure control component arranged on a circulation pipeline. The input end and the output end of the circulation pipeline are connected to the cavity inside the optical testing device through a ball valve.

8. The optical measurement system for temperature-dependent components according to claim 7, characterized in that: The temperature and pressure control component comprises a pressure controller, a pressure gauge, and a temperature sensor which are sequentially arranged on the circulation pipeline, and the pressure controller, the pressure gauge, and the temperature sensor are all connected to the data acquisition and analysis device.

9. The optical measurement system for temperature-dependent components according to claim 8, characterized in that: A compressor is arranged between the cooling part and the heating part.

10. An optical measurement system for a temperature-dependent component according to any one of claims 1 to 5, characterized in that: The data acquisition and analysis device comprises a signal amplifier, a data collector and an analysis terminal. The laser measurement unit is connected to the data collector via the signal amplifier, and the data collector is connected to the analysis terminal.

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