An environmental test equipment calibration device and method of use thereof

Abstract

The present application relates to a kind of environmental test equipment calibration device and its use method.The calibration device includes: temperature and humidity sensor sliding positioning mechanism, environmental test equipment test port sealing mechanism;The temperature and humidity sensor sliding positioning mechanism is set in the environmental test equipment, for the accurate spatial position of temperature and humidity sensor fixed;The cable of temperature and humidity sensor is introduced or led out by the environmental test equipment test port sealing mechanism fixed on the environmental test equipment and gathered.The calibration efficiency and accuracy of environmental test equipment are improved.

Description

Technical Field

[0001] This invention belongs to the field of thermal metrology technology, specifically relating to an environmental testing equipment calibration device and its usage method. Background Technology

[0002] Environmental testing equipment is mainly used to simulate and test the performance and stability of products or systems under various environmental conditions. Regular calibration is essential to ensure the accuracy and reliability of this equipment. According to JJF1101—2019 "Calibration Specification for Temperature and Humidity Parameters of Environmental Testing Equipment," this specification applies to the calibration of temperature and humidity parameters for environmental testing equipment such as drying ovens, incubators, climate aging chambers, mold test chambers, salt spray test chambers, corrosive gas test chambers, high and low temperature test chambers, alternating damp heat test chambers, and constant temperature and humidity chambers, with a temperature range of -80 ℃ to 300 ℃ and a humidity range of 10%RH to 100%RH. This specification clarifies the requirements for the placement of temperature and humidity sensors and the number of measurement points. (1) Location of measurement points The sensor placement locations, serving as measurement points during equipment calibration, should be arranged on three different levels within the equipment's working space, referred to as the upper, middle, and lower layers. The middle layer is the calibration working surface parallel to the bottom surface, passing through the geometric center of the working space. The distance between each sensor placement point and the inner wall of the equipment should be 1 / 10 of the side length. This distance can be increased when there is an air duct, but should not exceed 500 mm. If the equipment has a sample rack or sample cart, the lower layer measurement points can be placed 10 mm above the sample rack or sample cart.

[0003] The placement of sensor measurement points can also be arranged according to the user's actual work needs.

[0004] (2) Number of measurement points Temperature sensor measurement points are represented by numbers 1, 2, 3..., and humidity sensor measurement points are represented by letters A, B, C...

[0005] When the equipment volume is less than or equal to 2 m³, there are 9 temperature measurement points and 3 humidity measurement points. Temperature point 5 and humidity point O are located at the geometric center of the middle layer of the equipment's working space. Figure 1 As shown.

[0006] When the equipment volume is greater than 2 m³, there are 15 temperature measurement points and 4 humidity measurement points. Temperature point 15 and humidity point O are located at the geometric center of the middle layer of the equipment's working space. Figure 2 As shown.

[0007] In the calibration of environmental testing equipment, accurate spatial positioning of temperature and humidity sensors is a core element for building a reliable calibration data chain and ensuring the scientific validity of test results. However, existing traditional positioning methods have the following technical drawbacks: Traditional temperature measuring racks have serious limitations in equipment compatibility, making it difficult to meet the diverse calibration needs of environmental testing equipment of different models and sizes. In the process of fixing temperature and humidity sensors, the conventional fixing methods of binding with iron wire or sticking with aluminum foil tape are very likely to cause the measuring end to be tightly attached to the temperature measuring frame, which not only greatly reduces the efficiency of calibration work, but also directly affects the accuracy and validity of the measurement data. Existing pin-type telescopic poles use interval height adjustment, which can only lock at fixed intervals and cannot achieve fine-tuning of height sliding, resulting in poor positioning accuracy and insufficient height adaptability.

[0008] Meanwhile, in environmental testing equipment calibration, the sealing effect of the test port directly affects the stability and uniformity of the internal temperature and humidity field. Precise temperature and humidity field control is a crucial prerequisite for ensuring reliable calibration data and scientific test results; therefore, the isolation and protection of the atmospheric environment and the internal environment of the equipment cannot be underestimated. The traditional sealing method uses a solid rubber plug to pass through a bundle of temperature and humidity sensor cables to seal the test port. However, this method has the following significant drawbacks: a) Traditional rubber stoppers have poor equipment compatibility and are difficult to meet the diverse calibration needs of test ports of different sizes; b) It is difficult to achieve a tight fit between multiple cables and the test port. The resulting gaps cause gas exchange between the atmospheric environment and the internal environment of the equipment, which seriously interferes with the stability of the temperature and humidity field and leads to deviations in the calibration data. c) Rubber materials are susceptible to aging due to environmental factors. As the usage time increases, the sealing performance gradually declines, which not only reduces calibration efficiency but may also lead to inaccurate calibration results due to poor sealing. Summary of the Invention The purpose of this invention is to address two core issues: the positioning and fixing of temperature and humidity sensors, and the sealing of test ports. This invention proposes a calibration device and method for environmental testing equipment, aiming to improve the efficiency and accuracy of environmental testing equipment calibration. Specifically, to address the challenges of temperature and humidity sensor distribution and fixing, a sliding positioning mechanism for the temperature and humidity sensors is proposed, achieving precise spatial positioning of the sensors and effectively improving the compatibility of the temperature measuring frame. Furthermore, to address the problems of poor compatibility, insufficient sealing, and low durability of traditional test port sealing methods, a sealing mechanism for the test ports of environmental testing equipment is proposed. This mechanism effectively blocks gas exchange between the atmospheric environment and the internal environment of the equipment, significantly improving the compatibility, sealing performance, and durability of the sealing mechanism.

[0009] Crucially, the aforementioned sliding positioning mechanism for the temperature and humidity sensors and the sealing mechanism for the test port do not operate independently. Instead, they are deeply synergistic in structure and function, forming an integrated calibration assurance system of "positioning—lead wire—sealing," fundamentally improving the accuracy and stability of calibration. Specifically, the sliding positioning mechanism precisely locks multiple temperature and humidity sensors to various spatial calibration points within the equipment's working cavity, constructing a standard measurement array that meets specifications and ensuring complete acquisition of temperature and humidity distribution. All sensor connection cables are led out through the test port. The test port sealing mechanism reliably clamps the cables while applying an elastic seal to the test port, allowing multiple cables to pass through without disrupting the internal environment. This synergistic cooperation protects the sensor's surrounding microenvironment from external airflow disturbances, temperature and humidity drift, and internal and external gas exchange caused by test port leakage, ensuring that the sensor readings accurately reflect the steady-state temperature and humidity field inside the equipment, effectively avoiding the problem of "accurate measurement points but distorted measurements."

[0010] Meanwhile, the robust positioning structure eliminates the risk of sensor misalignment caused by cable dragging or internal airflow impact, maintaining the accuracy of spatial measurement points over the long term. The highly sealed design also isolates external moisture, inhibiting corrosion of the positioning mechanism's metal components by condensation inside the equipment, ensuring the long-term operational stability of the sliding positioning mechanism. These two complementary and mutually supportive functions simultaneously eliminate systematic errors introduced by sensor positional deviation and test port seal failure, significantly reducing the uncertainty of calibration results. This dual technological innovation synergistically enhances efficiency, jointly ensuring the efficient and accurate calibration of environmental testing equipment.

[0011] The technical solution of the present invention: According to the first aspect of the present invention, an environmental testing equipment calibration device is provided, which is a unique environmental testing equipment calibration device designed to address the structural characteristics of environmental testing equipment and the strict requirements on the placement of temperature and humidity sensors and the number of measurement points during the calibration process, while blocking gas exchange between the atmospheric environment and the internal environment of the equipment.

[0012] The calibration device includes: a temperature and humidity sensor sliding positioning mechanism and an environmental testing equipment test port sealing mechanism; the temperature and humidity sensor sliding positioning mechanism is located inside the environmental testing equipment and is used to fix the accurate spatial position of the temperature and humidity sensor; the cable of the temperature and humidity sensor is brought in or led out through the environmental testing equipment test port sealing mechanism fixed on the environmental testing equipment.

[0013] In one possible embodiment, the temperature and humidity sensor sliding positioning mechanism includes a stabilization control module for providing an adjustable base support; and a sliding mechanism mounted on the stabilization control module, the height of which is adjustable in multiple levels. A sliding control module, mounted on the sliding mechanism, is used to position and lock the temperature and humidity sensor cable.

[0014] In one possible embodiment, the stabilization control module includes a base, at least three base support plates, and at least three base fine-tuning screws. The base has a three-pronged mechanical structure with three evenly distributed support arms; the hand-tightening portion of the base fine-tuning screws has anti-slip vertical grooves. The base support plates are used to place on the environmental test chamber body and have threaded holes; the base has a central portion and multiple support arms extending outward from the central portion, each support arm having a vertical threaded hole at its end; the base fine-tuning screws are screwed into both the vertical threaded holes of the base and the threaded holes of the base support plates, and by rotating the base fine-tuning screws, the height of the base relative to the base support plates can be adjusted, thereby leveling the base. The central portion of the base has a connecting threaded hole for connecting the sliding mechanism.

[0015] In one possible embodiment, the sliding mechanism includes at least two telescopic rods that are sequentially sleeved from bottom to top, with the lower end of the lowest telescopic rod fixedly connected to a threaded hole in the base. A fixing block and a locking screw are provided at the joint between adjacent telescopic rods. The upper end of the lower telescopic rod is fixedly connected to the fixing block, and the upper telescopic rod slides through the fixing block. The fixing block has a radial threaded hole, into which the locking screw is screwed and abuts against the upper telescopic rod to lock the relative position of the two telescopic rods.

[0016] In one possible embodiment, the sliding control module includes at least one slider and a gland locking member mounted on the slider. The slider is capable of gripping and locking onto the outer circumferential surface of any section of the telescopic rod, and the gland locking member has an axial channel for the temperature and humidity sensor cable to pass through, and is capable of locking the inserted cable by radial contraction.

[0017] In one possible embodiment, the slider includes a first clamping block, a second clamping block, a hinged screw, a tightening handle, and a connecting pin. One side of the first clamping block and the second clamping block are hinged together by the connecting pin, and the other side is connected by the hinged screw and the tightening handle. One end of the hinged screw is hinged to the first clamping block by the pin, and the other end is provided with an external thread. One end of the tightening handle is provided with a threaded hole that engages with the hinged screw. When the tightening handle is rotated, it pushes the second clamping block against the first clamping block, so that the two clamping blocks grip the corresponding telescopic rod. The arc surfaces of the first and second clamping blocks that contact the telescopic rod are provided with anti-slip vertical grooves.

[0018] In one possible embodiment, the gland locking member includes a clamping cap, a silicone sealing ring, a body, and a fixing nut; the body passes through a positioning hole on the first clamping block and is locked by the fixing nut; the silicone sealing ring is placed inside the body, and the clamping cap is threadedly connected to the body. When the clamping cap is tightened, the silicone sealing ring is squeezed to contract radially, thereby gripping the inserted cable.

[0019] Preferably, in the gland locking component used to lock the humidity sensor cable, a narrow slit is provided on one side of the silicone sealing ring, allowing the humidity sensor cable to be inserted into the central through hole of the silicone sealing ring from the side, so as to accommodate the large-diameter humidity sensor connector that cannot be inserted from the end.

[0020] The sliding positioning mechanism for a temperature and humidity sensor provided by this invention can quickly correct the levelness of the base through independent adjustment of the base fine-tuning screws, eliminating the tilting of the mechanism caused by unevenness of the test chamber bottom surface. Through the cooperation of multi-stage nested telescopic rods and double-point locking screws, it achieves rapid and reliable height adjustment and locking over a large span, offering convenient operation and sufficient structural rigidity. The slider, which can be fixed at any position along the telescopic rod, and the gland locking element with a progressive clamping mechanism enable rapid and accurate positioning and gentle locking of the sensor cable. It is compatible with cables of different diameters and humidity sensors with large ends, making it widely applicable. The overall mechanism boasts high stability, flexible adjustment, and reliable locking, effectively ensuring the positioning accuracy and efficiency of the temperature and humidity sensor in the calibration environment.

[0021] In one possible embodiment, the environmental testing equipment test port sealing mechanism is disposed at the test port of the environmental testing chamber, including: An external sealing mechanism for the housing is located outside the test port and is used to provide a mounting base and seal and lock the inserted sensor cable. The inner sealing mechanism of the chamber is located inside the test port and is positioned opposite to the outer sealing mechanism of the chamber. It forms an inner seal and buffer protection through elastic deformation. The clamping mechanism connects and clamps the outer sealing mechanism and the inner sealing mechanism of the box, so that the two are pressed against the inner and outer sides of the test port.

[0022] In one possible embodiment, the outer sealing mechanism of the chamber includes an outer flange, an outer high-temperature resistant silicone gasket, and multiple gland locks for securing sensor cables. The outer flange has an array of gland lock positioning holes, and the outer high-temperature resistant silicone gasket has corresponding through holes. The outer high-temperature resistant silicone gasket is positioned between the outer flange and the outer wall of the test chamber. Each gland lock penetrates and is fixed to the corresponding outer flange positioning hole and the outer high-temperature resistant silicone gasket through hole, forming an axial channel for the sensor cable to pass through, and capable of radially contracting to tightly seal the inserted cable.

[0023] In one possible embodiment, the internal sealing mechanism of the chamber includes an inner flange and an inner high-temperature resistant silicone gasket, which are bonded together with high-temperature resistant adhesive. The inner flange has through holes corresponding to the positions of the locking channels of each gland head, and the inner high-temperature resistant silicone gasket has corresponding tapered guide holes for guiding cables through and adaptively filling the gap between the inner flange and the inner wall of the test chamber under pressure, thus forming a seal.

[0024] In one possible embodiment, the clamping mechanism includes a screw and a nut. The screw passes sequentially through the outer sealing mechanism of the housing, the test port, and the inner sealing mechanism of the housing. By tightening the nut, the outer flange and the inner flange are tightened towards each other, pressing the outer high-temperature resistant silicone pad and the inner high-temperature resistant silicone pad onto the outer and inner surfaces of the test port, respectively, thus constructing a double sealing structure.

[0025] In one possible embodiment, the gland locking element includes a clamping cap, a silicone sealing ring, a body, and a retaining nut. The body passes through a corresponding positioning hole on the outer flange and is locked from the inside of the outer flange by the retaining nut. An O-ring is also provided between the body and the outer flange to seal the gap between the body and the outer flange by radial compression. The silicone sealing ring is placed inside the body, and the clamping cap is threaded to the body. When the clamping cap is tightened, the silicone sealing ring is compressed to contract radially, thereby gripping and sealing the inserted sensor cable.

[0026] In one possible embodiment, the gland locking mechanism includes an M10 gland locking mechanism for locking the temperature sensor cable and an M16 gland locking mechanism for locking the humidity sensor cable. The outer flange has corresponding M10 and M16 gland locking mechanism positioning holes arranged in an array. In the M16 gland locking mechanism for locking the humidity sensor cable, a narrow slit is provided on one side of the silicone sealing ring, allowing the thicker end of the humidity sensor cable to be inserted from the side into the central through-hole of the silicone sealing ring.

[0027] In one possible embodiment, the outer sealing mechanism of the chamber also includes several silicone plugs for inserting into the center hole of the gland locking member without sensor cables during calibration. The plugs fit tightly through elastic deformation, preventing air from entering the test chamber through the open channel.

[0028] In one possible embodiment, the outer sealing mechanism of the chamber further includes several stainless steel conduits, one end of each of which is interference-fitted to the corresponding gland locking body and extends into the test chamber for guiding and organizing the corresponding sensor cables. The inner flange and inner high-temperature resistant silicone gasket of the inner sealing mechanism of the chamber are respectively provided with positioning holes and tapered guide holes corresponding to the positions of each stainless steel conduit.

[0029] In one possible embodiment, an axial notch is machined on one side of the screw of the clamping mechanism, and a boss matching the notch is provided at the center hole of the outer flange and the inner flange. Through the cooperation of the notch and the boss, it is ensured that the corresponding hole positions of the outer flange and the inner flange are consistent during installation.

[0030] The environmental testing equipment sealing mechanism provided by this invention forms a double sealing barrier by setting flanges with elastic sealing gaskets on both the inner and outer sides of the test port and clamping them together with a clamping mechanism, effectively blocking gas exchange between the atmosphere and the internal environment of the test chamber. The array of gland locking elements on the outer flange enables independent locking and sealing of multiple sensor cables. Each gland locking element, in conjunction with an O-ring, forms a double sealing structure with high sealing reliability. The slit silicone sealing ring for the humidity sensor and the silicone plug for unused channels allow the mechanism to flexibly adapt to cables of different diameters and thick-end cables, and provides rapid sealing of unused channels, demonstrating strong versatility. The stainless steel conduit provides cable guidance and organization, facilitating high-density wiring. The overall mechanism is compact, easy to install, and has excellent sealing performance, effectively ensuring the stability of the temperature and humidity field in the calibration environment and the accuracy of the calibration data.

[0031] According to a second aspect of the present invention, a method for using an environmental testing equipment calibration device is provided, comprising the following steps: Step 1: Determine the number and spatial location of temperature and humidity sensors based on the chamber volume of the environmental testing equipment; Step 2: Based on the number and spatial location of the temperature and humidity sensors determined in Step 1, select the corresponding number of temperature and humidity sensor sliding positioning mechanisms, and adjust the sliding mechanism and the sliding control module according to the spatial location of the temperature and humidity sensors. Step 3: The temperature and humidity sensor cable is brought together and introduced or led out through the sealing mechanism of the test port of the environmental test equipment, and the temperature and humidity sensor cable is locked by the sliding control module and the sealing mechanism of the test port of the environmental test equipment. Step 4: After positioning and locking all temperature and humidity sensors, connect the sensors to the electrical testing equipment according to the JJF1101 Environmental Test Equipment Temperature and Humidity Parameter Calibration Specification. Collect and record data as required by the specification, and obtain the calibration results through data processing. After calibration, wait for the equipment temperature to return to room temperature before removing the temperature and humidity sensors and disassembling the device.

[0032] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) Strong environmental adaptability: It is suitable for extreme temperature ranges of -80℃ to 300℃ and humidity ranges of 0 to 100%RH, and is not afraid of harsh test conditions.

[0033] (2) Wide equipment compatibility: The sliding positioning mechanism of the temperature and humidity sensor adopts a telescopic structure with a height adjustment range of 800 mm to 2000 mm, which can match mainstream environmental test equipment with a height of ≥800 mm, effectively covering the positioning requirements of different specifications; the sealing mechanism of the test port of the environmental test equipment can be adapted to mainstream environmental test equipment with a test port diameter of 130 mm to 230 mm and a depth of 100 mm to 200 mm, meeting the sealing requirements of various equipment. (3) Flexible sensor installation: It is compatible with various specifications such as temperature sensor tip diameter 4 mm~5 mm and cable diameter 3 mm~5 mm, humidity sensor tip and cable connection diameter ≤9 mm and cable diameter 4 mm~5 mm. It supports the simultaneous installation of 15 temperature sensors and 4 humidity sensors to meet the deployment requirements of calibration scenarios.

[0034] (4) Easy to operate: The operation process is simplified and can realize functions such as quick assembly, disassembly, and sliding positioning, thereby improving calibration efficiency and accuracy.

[0035] (5) Precise positioning: Ensure that the temperature and humidity sensors are always fixed in the required placement position during the calibration of environmental testing equipment.

[0036] (6) Good sealing performance: Ensures that the gas exchange between the atmospheric environment and the internal environment of the equipment is blocked during the calibration of environmental testing equipment, thereby improving calibration efficiency and accuracy.

[0037] (7) Good durability: It has good physical and mechanical properties and can be reused.

[0038] Overall, this invention aims to provide a calibration device and method for environmental testing equipment that is compatible, well-sealed, durable, efficient, reliable, and easy to operate, thereby improving the calibration efficiency and accuracy of environmental testing equipment. Attached Figure Description

[0039] Figure 1 A schematic diagram showing the layout of environmental testing equipment with a volume of 2 m³ or less.

[0040] Figure 2 This is a schematic diagram showing the layout of environmental testing equipment with a volume greater than 2 m³.

[0041] Figure 3 This is a schematic diagram of the sliding positioning mechanism of the temperature and humidity sensor according to a preferred embodiment of the present invention; Figure 4 This is an exploded view of the stabilization control module in the sliding positioning mechanism of the temperature and humidity sensor according to a preferred embodiment of the present invention; Figure 5 This is an exploded view of the sliding mechanism in the sliding positioning mechanism of the temperature and humidity sensor according to a preferred embodiment of the present invention; Figure 6 This is a schematic diagram illustrating the application of the sliding control module in the sliding positioning mechanism of the temperature and humidity sensor according to a preferred embodiment of the present invention. Figure 7 This is an exploded view of the application of the sliding control module in the sliding positioning mechanism of the temperature and humidity sensor according to a preferred embodiment of the present invention. Figure 8 This is an exploded view of the lower slider in the sliding control module of the sliding positioning mechanism of the temperature and humidity sensor in a preferred embodiment of the present invention; Figure 9 This is an exploded view of the upper slider in the sliding control module of the sliding positioning mechanism of the temperature and humidity sensor in a preferred embodiment of the present invention; Figure 10 This is an exploded view of the gland locking component in the sliding control module of the temperature and humidity sensor sliding positioning mechanism according to a preferred embodiment of the present invention; Figure 11 This is a schematic diagram illustrating the application of the sliding positioning mechanism for the temperature and humidity sensor according to a preferred embodiment of the present invention (equipment volume less than or equal to 2m³). 3 hour); Figure 12 This is a schematic diagram illustrating the application of the sliding positioning mechanism for the temperature and humidity sensor according to a preferred embodiment of the present invention (equipment volume greater than 2m³). 3 hour).

[0042] Figure 13 This is a schematic diagram of the test port sealing mechanism of the environmental testing equipment according to a preferred embodiment of the present invention; Figure 14This is an exploded view of the outer sealing mechanism of the test port sealing mechanism in the environmental testing equipment of the preferred embodiment of the present invention; Figure 15 This is a schematic diagram of the outer flange in the outer sealing mechanism of the test port sealing mechanism of the environmental testing equipment according to a preferred embodiment of the present invention; Figure 16 This is a schematic diagram of the high-temperature resistant silicone pad on the outer side of the outer sealing mechanism of the test port sealing mechanism of the environmental testing equipment according to a preferred embodiment of the present invention; Figure 17 This is an exploded view of the M10 gland locking member in the outer sealing mechanism of the test port sealing mechanism of the environmental testing equipment according to a preferred embodiment of the present invention; Figure 18 This is an exploded view of the M16 gland locking member in the outer sealing mechanism of the test port sealing mechanism of the environmental testing equipment according to a preferred embodiment of the present invention; Figure 19 This is an exploded view of the sealing mechanism inside the chamber of the environmental testing equipment's test port sealing mechanism, according to a preferred embodiment of the present invention. Figure 20 This is a schematic diagram of the inner flange of the sealing mechanism inside the housing in the test port sealing mechanism of the environmental testing equipment according to a preferred embodiment of the present invention; Figure 21 This is a schematic diagram of the high-temperature resistant silicone pad inside the sealing mechanism of the test port sealing mechanism of the environmental testing equipment according to a preferred embodiment of the present invention; Figure 22 This is an exploded view of the clamping mechanism in the test port sealing mechanism of the environmental testing equipment according to a preferred embodiment of the present invention; Figure 23 This is a schematic diagram of the application of the sealing mechanism of the test port of the environmental testing equipment according to a preferred embodiment of the present invention (when the temperature and humidity sensor cable does not pass through the sealing mechanism); Figure 24 This is a schematic diagram of the application of the sealing mechanism of the test port of the environmental testing equipment according to a preferred embodiment of the present invention (when the temperature and humidity sensor cable passes through the sealing mechanism).

[0043] Explanation of reference numerals in the attached figures: 100 - Environmental test chamber body; 200 - Humidity sensor cable; 300 - Temperature sensor cable; 10 - Stabilization control module; 101 - Base support plate; 102 - M12 threaded hole on the base support plate; 103 - Base; 104 - M22 threaded hole in the center of the base; 105 - M12 threaded hole on the base; 106 - M12 fine-tuning screw on the base; 20 - Sliding mechanism; 201 - Telescopic rod (lower); 202 - Fixing block (lower); 203 - M6 locking screw; 204 - Telescopic rod (middle); 205 - Fixing block (upper); 206 - Telescopic rod (upper); 207 - Threaded hole at the lower end of the fixing block (lower); 208 - M6 threaded hole on the fixing block; 209 - Threaded hole at the lower end of the fixing block (upper); 30 - Sliding control module; 301 - Lower slider; 3011 - Lower clamping block 1 3012 - Lower clamping block; 3013 - M6 hinged screw; 3014 - Tightening handle washer; 3015 - Tightening handle; 30151 - Threaded hole; 30152 - Through hole; 30153 - Anti-slip vertical grooves on the tightening handle to increase friction; 3016 - Clamping block pin; 3017 - Anti-slip vertical grooves on lower clamping blocks 1 and 2 to increase friction; 3018 - Clamping block pin positioning hole; 3019 - M16 on lower clamping block 1 Gland head locking element positioning hole; 302-upper slider; 3021-upper clamping block 1; 3022-upper clamping block 2; 3023-M6 hinge screw; 3024-tightening handle washer; 3025-tightening handle; 30251-threaded hole; 30252-through hole; 30253-anti-slip vertical grooves on the tightening handle to increase friction; 3026-clamping block pin; 3027-anti-slip vertical grooves on upper clamping blocks 1 and 2 to increase friction; 3028-clamping block pin positioning hole; 3029-M16 gland head locking element positioning hole on upper clamping block 1; 303-M16 gland head locking element; 3031-M16 gland head clamping cap; 3032-M16 gland head silicone sealing ring; 3033-M16 gland head body; 3034-M16 gland head fixing nut.40 - External sealing mechanism of the enclosure; 401 - External flange; 4011 - M16 gland lock positioning hole; 4012 - M10 gland lock positioning hole; 4013 - Boss-type center hole; 402 - External high-temperature resistant silicone pad; 4021 - M16 gland lock positioning hole; 4022 - M10 gland lock positioning hole; 4023 - Center hole; 403 - Silicone plug; 404 - M10 gland lock; 4041 - M10 gland clamping cap; 4042 - Gland silicone sealing ring; 4043 - Gland body; 4044 - M10 O-ring; 4045 - Gland fixing nut; 405 - M16 gland lock; 4051 - M16 gland clamping cap; 4052 - Gland silicone sealing ring; 4053 - Gland body; 4054 - M16 O-ring; 4055 - Gland head fixing nut; 406 - Φ7 stainless steel pipe; 407 - Φ11 stainless steel pipe; 50 - Internal sealing mechanism of the housing; 501 - Inner flange; 5011 - Φ11 stainless steel pipe positioning hole; 5012 - Φ7 stainless steel pipe positioning hole; 5013 - Boss-type center hole; 502 - Inner high temperature resistant silicone gasket; 5021 - Φ11 stainless steel pipe tapered guide hole; 5022 - Φ7 stainless steel pipe tapered guide hole; 5023 - Φ11 stainless steel pipe positioning hole; 5024 - Φ7 stainless steel pipe positioning hole; 5025 - Center hole; 60 - Clamping mechanism; 601 - M16 screw; 602 - M16 nut. Detailed Implementation

[0044] To further understand the present invention, preferred embodiments of the present invention are described below in conjunction with examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention and not for limiting the claims of the present invention.

[0045] This invention aims to provide a calibration device and method for environmental testing equipment that is compatible, well-sealed, durable, efficient, reliable, and easy to operate, thereby improving the calibration efficiency and accuracy of environmental testing equipment. The calibration device and method mainly include: a sliding positioning mechanism and method for a temperature and humidity sensor, and a sealing mechanism and method for the test port of environmental testing equipment. The invention will be further described in detail below with reference to the accompanying drawings and specific examples. The advantages and features of the invention will become clearer from the following description and claims. It should be noted that the accompanying drawings are in a very simplified form and are only used to facilitate and clarify the explanation of the purpose of this invention.

[0046] Specifically, the sliding positioning mechanism and method for the temperature and humidity sensor in the calibration environmental test equipment of this example include: a stabilization control module 10, a sliding mechanism 20, and a sliding control module 30. For example... Figure 3As shown, the stabilization control module 10 serves as "basic support + rigid load bearing + dynamic adjustment"; the sliding mechanism 20 adopts an innovative design of "multi-level nested telescopic + double-point locking", which can quickly adapt to different height requirements; the sliding control module 30 serves to quickly and accurately position and lock the temperature and humidity sensor.

[0047] like Figure 4 As shown, the stability control module 10 includes: a base support plate 101, an M12 threaded hole 102 on the base support plate, a base 103, an M22 threaded hole 104 at the center of the base, an M12 threaded hole 105 on the base, and a base fine-tuning screw M12 106.

[0048] like Figure 4 As shown, the base support plates 101 (3 in total) are used to increase the contact area between the base 103 and the environmental test chamber body 100 when the base 103 is placed, effectively dispersing the pressure transmitted by the base 103 and keeping the base 103 stable. M12 threaded holes 102 are provided on the base support plates.

[0049] like Figure 4 As shown, the base 103, as the core load-bearing component of the sliding mechanism 20, adopts a "trident-shaped mechanical structure" design to evenly distribute vertical loads and lateral forces, and can stably support the sliding mechanism 20 and the sliding control module 30 installed on it. An M22 threaded hole 104 is opened in the center of the base, and M12 threaded holes 105 are opened at the ends of the three forks of the base. The base 103 is threadedly connected to the telescopic rod (lower) 201.

[0050] like Figure 4 As shown, there are 3 fine-tuning screws M12 106 on the base: The hand-tightening part of the fine-tuning screw M12 106 on the base has anti-slip vertical grooves to increase friction. When the surface on which the base 103 is placed is uneven, it will cause the sliding mechanism 20 to tilt. The operator can adjust the height of the base 103 by rotating the fine-tuning screw M12 106, quickly correct the tilt angle of the sliding mechanism 20, and ensure that the base 103 is in a horizontal state.

[0051] like Figure 5 As shown, the sliding mechanism 20 includes: a telescopic rod (lower) 201, a fixing block (lower) 202, an M6 locking screw 203, a telescopic rod (middle) 204, a fixing block (upper) 205, a telescopic rod (upper) 206, a threaded hole 207 at the lower end of the fixing block (lower), an M6 threaded hole 208 on the fixing block, and a threaded hole 209 at the lower end of the fixing block (upper).

[0052] like Figure 5As shown, the lower telescopic rod 201 adopts a hollow tubular structure, with the inner and outer walls polished and ground to provide a low-friction, highly smooth guide track for the sliding of the middle telescopic rod 204. The lower telescopic rod 201 has external threads at both its upper and lower ends; its lower end is threadedly connected to the base 103, and its upper end is threadedly connected to the fixing block 202, used to support the middle telescopic rod 204 and above.

[0053] like Figure 5 As shown, the fixing block (lower) 202 has a through hole at its upper end and a threaded hole 207 at its lower end, which is threadedly connected to the telescopic rod (lower) 201; an M6 threaded hole 208 is opened on its upper part to support the M6 ​​locking screw 203.

[0054] like Figure 5 As shown, M6 locking screws 203 (2 pieces): used to lock the telescopic rod (middle) 204 and the telescopic rod (upper) 206, to achieve quick and reliable locking and prevent the telescopic rod (middle) 204 and the telescopic rod (upper) 206 from loosening or shifting during use; the hand-tightening part of the M6 ​​locking screws 203 is provided with anti-slip vertical grooves to increase friction.

[0055] like Figure 5 As shown, the telescopic rod (middle) 204 has an external thread at its upper end and adopts a hollow tubular structure. The inner and outer walls of the tube are polished and ground to provide a low-friction, high-smooth guide track for the sliding of the telescopic rod (upper) 206. It can slide up and down within the telescopic rod (lower) 201 and the fixing block (lower) 202 to adjust the height of the sliding mechanism 20.

[0056] like Figure 5 As shown, the fixing block (upper) 205 has a through hole at its upper end and a threaded hole 209 at its lower end, which is threadedly connected to the telescopic rod (middle) 204; it has an M6 threaded hole 208 on its upper part to support the M6 ​​locking screw 203.

[0057] like Figure 5 As shown, the telescopic rod (upper) 206 adopts a hollow tubular structure. The inner and outer walls of the tube are polished and ground. It can slide up and down within the telescopic rod (middle) 204 and the fixed block (upper) 205 to adjust the height of the sliding mechanism 20.

[0058] like Figure 6As shown, the sliding control module 30 includes: an upper slider 302, a lower slider 301, and four M16 gland locking parts 303. The lower slider 301 can be locked onto the cylindrical surface of the telescopic rod (middle) 204 or the telescopic rod (lower) 201, and cooperates with the M16 gland locking parts 303 for quick and accurate positioning and locking of the sensor cable. The upper slider 302 can be locked onto the cylindrical surface of the telescopic rod (upper) 206, and cooperates with the M16 gland locking parts 303 for quick and accurate positioning and locking of the sensor cable.

[0059] like Figure 8 As shown, the lower slider 301 includes: lower clamping block 1 3011, lower clamping block 2 3012, M6 hinge screw 3013, tightening handle washer 3014, tightening handle 3015, threaded hole 30151, through hole 30152, anti-slip vertical grooves on the tightening handle to increase friction 30153, clamping block pins 3016 (2 pieces), anti-slip vertical grooves on lower clamping blocks 1 and 2 to increase friction 3017, clamping block pin positioning hole 3018, and M16 gland head locking member positioning hole 3019 on lower clamping block 1.

[0060] like Figure 8 As shown, the lower clamping block 1 3011 has clamping block pin positioning holes 3018 (4 holes) and M16 gland locking part positioning holes 3019 (2 holes). The part of the lower clamping block 1 that contacts the cylindrical surface of the telescopic rod (middle) 204 or the telescopic rod (lower) 201 is provided with anti-slip vertical grooves 3017 to increase friction.

[0061] like Figure 8 As shown, the lower clamping block 2 3012 has a clamping block pin positioning hole 3018 and anti-slip vertical grooves 3017 to increase friction at the contact part with the cylindrical surface of the telescopic rod (middle) 204 or the telescopic rod (lower) 201.

[0062] like Figure 8 As shown, the M6 ​​hinge screw 3013 has a clamping block pin positioning hole 3018 at one end and an external thread at the other end. The M6 ​​hinge screw 3013 is connected to the tightening handle 3015 by threads.

[0063] like Figure 8 As shown, the tightening handle washer 3014 has a through hole and can be fitted onto the M6 ​​swivel screw 3013, serving as an "intermediate positioning element" between the lower clamping block 2 3012 and the tightening handle 3015, ensuring that the clamping force is transmitted vertically to the clamping block along the screw axis.

[0064] like Figure 8As shown, the tightening handle 3015 has a threaded hole 30151 at one end and a through hole 30152 at the other end. The hand-tightening part is provided with anti-slip vertical grooves 30153 to increase friction. By tightening the tightening handle 3015, the tightening handle washer 3014 is pushed to press and close the lower clamping block 1 3011 and the lower clamping block 2 3012, thereby locking the lower slide block 301 onto the telescopic rod (middle) 204 or the telescopic rod (lower) 201.

[0065] like Figure 8 As shown, the clamping block pin 3016: cooperates with the clamping block pin positioning hole 3018 to connect the lower clamping block 1 3011 and the lower clamping block 2 3012 together; and is used to connect the lower clamping block 1 3011 and the M6 ​​hinge screw 3013 together.

[0066] like Figure 8 As shown, the M16 gland lock positioning hole 3019 on the lower clamping block 1 is a through hole used to fix the M16 gland lock 303.

[0067] like Figure 9 As shown, the upper slider 302 includes: upper clamping block 1 3021, upper clamping block 2 3022, M6 hinge screw 3023, tightening handle washer 3024, tightening handle 3025, threaded hole 30251, through hole 30252, anti-slip vertical grooves on the tightening handle to increase friction 30253, clamping block pins 3026 (2 pieces), anti-slip vertical grooves on upper clamping blocks 1 and 2 to increase friction 3027, clamping block pin positioning hole 3028, and M16 gland head locking member positioning hole 3029 on upper clamping block 1.

[0068] like Figure 9 As shown, the upper clamping block 1 3021 has clamping block pin positioning holes 3028 (4 holes) and M16 gland head locking part positioning holes 3029 (2 holes). The part of the upper clamping block 1 3021 that contacts the cylindrical surface of the telescopic rod (upper) 206 is provided with anti-slip vertical grooves 3027 to increase friction.

[0069] like Figure 9 As shown, the upper clamping block 2 3022 has a clamping block pin positioning hole 3028 and anti-slip vertical grooves 3027 to increase friction at the contact part with the cylindrical surface of the telescopic rod (upper) 206.

[0070] like Figure 9 As shown, the M6 ​​hinge screw 3023 has a clamping block pin positioning hole 3028 at one end and an external thread at the other end. The M6 ​​hinge screw 3023 is connected to the tightening handle 3025 by threads.

[0071] like Figure 9As shown, the tightening handle washer 3024 has a through hole and can be fitted onto the M6 ​​swivel screw 3023, serving as an "intermediate positioning element" between the upper clamping block 2 3022 and the tightening handle 3025, ensuring that the clamping force is transmitted vertically to the clamping block along the screw axis.

[0072] like Figure 9 As shown, the tightening handle 3025 has a threaded hole 30251 at one end and a through hole 30252 at the other end. The hand-tightening part is provided with anti-slip vertical grooves 30253 to increase friction. By tightening the tightening handle 3025, the tightening handle washer 3024 is pushed to press and close the upper clamping block 1 3021 and the upper clamping block 2 3022, thereby locking the upper slider 302 onto the telescopic rod (upper) 206.

[0073] like Figure 9 As shown, the clamping block pin 3026: cooperates with the clamping block pin positioning hole 3028 to connect the upper clamping block 1 3021 and the upper clamping block 2 3022 together; and is used to connect the upper clamping block 1 3021 and the M6 ​​hinge screw 3023 together.

[0074] like Figure 9 As shown, the M16 gland lock positioning hole 3029 on the upper clamping block 1 is a through hole used to fix the M16 gland lock 303.

[0075] like Figure 10 As shown, the M16 gland locking component 303 includes: an M16 gland clamping cap 3031, an M16 gland silicone sealing ring 3032, an M16 gland body 3033, and an M16 gland fixing nut 3034. As the core component for fixing the temperature and humidity sensor cable, the M16 gland locking component 303 adopts a split modular design and achieves efficient locking and sealing of the temperature and humidity sensor cable through a progressive compression mechanism, adapting to the needs of cables with different diameters.

[0076] like Figure 10 As shown, the M16 gland clamping cap 3031 is threadedly connected to the M16 gland body 3033. When tightened, it compresses the M16 gland silicone sealing ring 3032, generating radial contraction force to achieve progressive clamping of the cable and ensure uniform distribution of locking force. Figure 10As shown, the M16 gland silicone sealing ring 3032 has a central through hole. When the M16 gland clamping cap 3031 is tightened, the M16 gland silicone sealing ring 3032 undergoes elastic deformation under pressure, tightly wrapping the cable sheath. The temperature sensor cable can pass directly through the central through hole of the M16 gland silicone sealing ring 3032. However, since the humidity sensor end with a diameter greater than 9mm cannot pass through the central through hole of the M16 gland silicone sealing ring at the cable insertion point, a narrow slit of about 0.1mm is made on one side of the M16 gland silicone sealing ring 3032 used to lock the humidity sensor cable (the elastic recovery of the silicone will cause the slit width to shrink slightly, and the actual width may be slightly smaller than the blade thickness). The cable is inserted through the slit.

[0077] like Figure 10 As shown, the M16 gland body 3033 has a precision-threaded surface and serves as a basic carrier, providing a channel for the temperature and humidity sensor cable to pass through and an interface for the installation of various components.

[0078] like Figure 10 , Figure 7 As shown, the M16 gland retaining nut 3034 is threadedly connected to the M16 gland body 3033. When tightened, it can lock the M16 gland body 3033 onto the lower clamping block 1 3011 and the upper clamping block 1 3021.

[0079] According to Figure 1, the equipment volume is less than or equal to 2m³. 3 At that time, five temperature and humidity sensor sliding positioning mechanisms need to be placed inside the equipment. After the temperature and humidity sensors are introduced into the equipment through the environmental box sealing mechanism, the height of the sliding mechanism 20 and the position of the sliding control module 30 are adjusted, and each temperature and humidity sensor is arranged in the corresponding position as required, as shown in Figure 11. The position and quantity of the temperature and humidity sensor sliding positioning mechanism and the sliding control module, as well as the details of the sensors, are shown in Table 1.

[0080] Table 1. Location and quantity of sliding positioning mechanism and sliding control module for temperature and humidity sensor, and details of sensor placement.

[0081] According to Figure 2, the equipment volume is greater than 2m³. 3 At that time, nine temperature and humidity sensor sliding positioning mechanisms need to be placed inside the equipment. After the temperature and humidity sensors are introduced into the equipment through the environmental box sealing mechanism, the height of the sliding mechanism 20 and the position of the sliding control module 30 are adjusted, and each temperature and humidity sensor is arranged in the corresponding position as required, as shown in Figure 12. The position and quantity of the temperature and humidity sensor sliding positioning mechanism and the sliding control module, as well as the details of the sensors placed, are shown in Table 2.

[0082] Table 2. Location and quantity of sliding positioning mechanism and sliding control module for temperature and humidity sensor, and details of sensor placement.

[0083] In this example, the sealing mechanism of the test port of the environmental test equipment during calibration includes: an outer sealing mechanism 40, an inner sealing mechanism 50, and a clamping mechanism 60. For example... Figure 13 As shown, the outer sealing mechanism 40 of the enclosure adopts an innovative design of "structural support + elastic sealing + dynamic protection + idle plugging" to build an efficient sealing and buffer protection system; the inner sealing mechanism 50 of the enclosure, through the precise cooperation of the inner flange and the inner high-temperature resistant silicone gasket, builds an efficient sealing and buffer protection system; the clamping mechanism 60, through the cooperation of screws and nuts, connects and clamps the outer sealing mechanism 40 and the inner sealing mechanism 50 of the enclosure, thereby achieving the function of sealing the test port of the environmental testing equipment.

[0084] like Figure 14 As shown, the outer sealing mechanism 40 of the housing includes: an outer flange 401; an outer high-temperature resistant silicone gasket 402; silicone plugs 403 (19 pieces); M10 gland locking parts 404 (15 pieces): M10 gland clamping caps 4041 (15 pieces), M10 gland silicone sealing rings 4042 (15 pieces), M10 gland bodies 4043 (15 pieces), M10 O-rings 4044 (15 pieces), M10 gland fixing nuts 4045 (15 pieces); M16 gland locking parts 405 (4 pieces): M16 gland clamping caps 4051 (4 pieces), M16 gland silicone sealing rings 4052 (4 pieces), M16 gland bodies 4053 (4 pieces), M16 4054 O-rings (4 pieces), 4055 M16 gland nuts (4 pieces); 15 Φ7 stainless steel pipes (406); 407 Φ11 stainless steel pipes (4 pieces).

[0085] like Figure 14 , Figure 15 As shown, the outer flange 401 is made of high-strength, corrosion-resistant 304 stainless steel and serves as the mounting base for the mechanism. Its surface features an array of standard holes: four M16 gland locking element positioning holes 4011 for fixing four M16 gland locking elements 405; fifteen M10 gland locking element positioning holes 4012 for fixing fifteen M10 gland locking elements 404; and one boss-type center hole 4013 for penetrating the M16 screw 601 of the clamping mechanism 60 (e.g., ...). Figure 22(As shown). A secure and rigid connection is achieved between the M10 / M16 gland locking parts 404 / 4055 and the outer flange 401 through the tightening combination of the M10 / M16 gland body 4043 / 4053 and the M10 / M16 gland fixing nuts 4045 / 4055. This also meets the requirements for high-density temperature and humidity sensor cable routing. Even in complex environments such as vibration and impact, the M10 / M16 gland locking parts 404 / 405 remain stable, preventing sealing failures caused by loose connections. During installation, tighten the M16 nut 602 evenly (e.g., ...). Figure 22 As shown, the outer flange 401 applies progressive pressure towards the environmental test chamber body 100, causing the outer high-temperature resistant silicone gasket 402 to undergo uniform elastic deformation. This creates a tightly fitting dynamic sealing pressure layer between the outer flange 401 and the surface of the environmental test chamber body 100. This design effectively fills microscopic gaps, blocks gas exchange channels between the atmospheric environment and the equipment interior, maintains excellent sealing performance, ensures the stability of the temperature and humidity field, and improves the reliability of calibration data.

[0086] like Figure 14 , Figure 16 As shown, the outer high-temperature resistant silicone pad 402 features a surface array of standard holes: four M16 gland locking positioning holes 4021, fifteen M10 gland locking positioning holes 4022, and one center hole 4023. The outer high-temperature resistant silicone pad 402 possesses excellent elastic modulus, forming a flexible buffer layer between the outer flange 401 and the environmental test chamber body 100. This reduces the risk of sealing failure due to structural damage. Under pressure, it tightly conforms to the microscopic contours of the outer flange 401 and the environmental test chamber body 100, forming a comprehensive sealing barrier. It maintains stable elastic deformation, effectively blocking gas exchange between the external atmosphere and the internal temperature and humidity field of the equipment, ensuring the accuracy and reliability of calibration data.

[0087] like Figure 14 As shown, silicone plugs 403 (19 pieces): Made of silicone, these plugs offer excellent resistance to high and low temperatures. They are specifically designed for M10 / M16 gland locking parts 404 / 405 that are not connected to temperature and humidity sensor cables during calibration. They precisely fit the center hole size of the M10 / M16 gland locking parts 404 / 405, achieving a tight fit through elastic deformation. After installation, the silicone plugs 403 completely fill the center hole of the M10 / M16 gland locking parts 404 / 405, preventing outside air from entering the device and effectively avoiding temperature and humidity field interference caused by poor sealing, thus ensuring the stability of the calibration environment and the accuracy of the data.

[0088] like Figure 17As shown, the M10 gland locking component 404 includes: an M10 gland clamping cap 4041, an M10 gland silicone sealing ring 4042, an M10 gland body 4043, an M10 O-ring 4044, and an M10 gland retaining nut 4045. As the core component for fixing the temperature sensor cable 300, the M10 gland locking component 404 adopts a split modular design and achieves efficient locking and sealing of the temperature sensor cable 300 through a progressive compression mechanism, adapting to the needs of cables of different diameters.

[0089] like Figure 17 As shown, the M10 gland clamping cap 4041 is connected to the M10 gland body 4043 by a thread. When tightened, it compresses the M10 gland silicone sealing ring 4042, generating a radial contraction force to achieve progressive compression of the temperature sensor cable 300 and ensure uniform distribution of the locking force. like Figure 17 As shown, the M10 gland silicone sealing ring 4042 has a central through hole. When the M10 gland clamping cap 4041 is tightened, the M10 gland silicone sealing ring 4042 undergoes elastic deformation under pressure, tightly wrapping the temperature sensor cable 300, and simultaneously filling the gap between the M10 gland body 4043 and the M10 gland clamping cap 4041, forming a double sealing barrier to prevent gas leakage and intrusion.

[0090] like Figure 17 As shown, the M10 gland body 4043 is made of high-strength 304 stainless steel with precision threaded surface. It serves as the basic carrier and provides a channel for the temperature sensor cable 300 to pass through and an interface for the installation of various components.

[0091] like Figure 17 As shown, the M10 O-ring 4044 is specifically designed to fill the gap between the M10 gland body 4043 and the outer flange 401. Based on the radial compression sealing principle, during installation, the M10 O-ring 4044 undergoes uniform elastic deformation due to the tightening action of the outer flange 401 and the M10 gland fixing nut 4045. This tightly fits the contact surface between the outer flange 401 and the M10 gland body 4043, effectively filling the gap and forming an all-around sealing barrier.

[0092] like Figure 17 As shown, the M10 gland retaining nut 4045 locks the M10 gland body 4043 onto the outer flange 401 via a threaded connection. It works in conjunction with the M10 O-ring 4044 to ensure that it does not loosen under vibration and temperature fluctuations, maintaining long-term locking reliability.

[0093] like Figure 18As shown, the M16 gland locking component 405 includes: an M16 gland clamping cap 4051, an M16 gland silicone sealing ring 4052, an M16 gland body 4053, an M16 O-ring 4054, and an M16 gland fixing nut 4055. As the core component for fixing the humidity sensor cable 200, the M16 gland locking component 405 adopts a split modular design and achieves efficient locking and sealing of the humidity sensor cable 200 through a progressive compression mechanism, adapting to the needs of cables with different diameters.

[0094] like Figure 18 As shown, the M16 gland clamping cap 4051 is connected to the M16 gland body 4053 by a thread. When tightened, it compresses the M16 gland silicone sealing ring 4052, generating radial contraction force to achieve progressive compression of the humidity sensor cable 200 and ensure uniform distribution of the locking force. like Figure 18 As shown, the M16 gland silicone sealing ring 4052 has a central through hole. When the M16 gland clamping cap 4051 is tightened, the M16 gland silicone sealing ring 4052 undergoes elastic deformation under pressure, tightly wrapping the humidity sensor cable 200 and filling the gap between the M16 gland body 4053 and the M16 gland clamping cap 4051, forming a double sealing barrier to prevent gas leakage. Since the humidity sensor end with a diameter greater than 9mm cannot pass through the central through hole of the M16 gland silicone sealing ring at the cable insertion point, a narrow slit of about 0.1mm is made on one side of the M16 gland silicone sealing ring 4052 used to lock the humidity sensor cable 200 (the elastic recovery of the silicone will cause the slit width to shrink slightly, and the actual width may be slightly smaller than the blade thickness), and the cable is inserted through the slit.

[0095] like Figure 18 As shown, the M16 gland body 4053 is made of high-strength 304 stainless steel with precision threaded surface. It serves as the basic carrier and provides a channel for the humidity sensor cable 200 to pass through and the mounting interface for various components.

[0096] like Figure 18 As shown, the M16 O-ring 4054 is specifically designed to fill the gap between the M16 gland body 4053 and the outer flange 401. Based on the radial compression sealing principle, during installation, the M16 O-ring 4054 undergoes uniform elastic deformation due to the tightening action of the outer flange 401 and the M16 gland fixing nut 4055. This tightly fits the contact surface between the outer flange 401 and the M16 gland body 4053, effectively filling the gap and forming an all-around sealing barrier.

[0097] like Figure 18As shown, the M16 gland retaining nut 4055: locks the M16 gland body 4053 onto the outer flange 401 through a threaded connection, and works with the M16 O-ring 4054 to ensure that it does not loosen under vibration and temperature change environments, maintaining long-term locking reliability.

[0098] like Figure 14 As shown, Φ7 stainless steel pipe 406 (15 pieces): made of seamless 304 stainless steel. It is interference-fitted with the M10 gland body 4043 and is used to guide the laying of temperature sensor cable 300.

[0099] like Figure 14 As shown, Φ11 stainless steel pipe 407 (4 pieces): made of seamless 304 stainless steel. It is interference-fitted with the M16 gland body 4053 and is used to guide the laying of the humidity sensor cable 200.

[0100] like Figure 19 , Figure 13 As shown, the internal sealing mechanism 50 of the enclosure includes an inner flange 501 and an inner high-temperature resistant silicone gasket 502. The two are bonded together using high-temperature resistant adhesive, a design based on innovative optimization for ease of installation, sealing reliability, and structural stability. Utilizing a high-quality combination of 304 stainless steel and high-temperature resistant silicone, the precise fit between the inner flange 501 and the inner high-temperature resistant silicone gasket 502 constructs a highly efficient sealing and buffer protection system.

[0101] like Figure 20 As shown, the inner flange 501 features a surface array of standard holes: 4 Φ11 stainless steel pipe positioning holes 5011, 15 Φ7 stainless steel pipe positioning holes 5012, and 1 boss-type center hole 5013. High-strength 304 stainless steel is selected and CNC milled and polished to ensure a tight fit with the inner high-temperature resistant silicone gasket 502. The structural design adapts to the contour of the test port of the environmental test chamber 100 and is bolted to the outer flange 401, uniformly transmitting pressure to the inner high-temperature resistant silicone gasket 502. This causes the silicone gasket to undergo uniform elastic deformation, forming a sealing structure at the test port of the environmental test chamber 100, effectively preventing the intrusion of external gases and ensuring the stability of the internal temperature and humidity field of the equipment.

[0102] like Figure 21As shown, the inner high-temperature resistant silicone pad 502 has a surface array of standard hole positions: 4 Φ11 stainless steel tube tapered guide holes 5021, 15 Φ7 stainless steel tube tapered guide holes 5022, 4 Φ11 stainless steel tube positioning holes 5023, 15 Φ7 stainless steel tube positioning holes 5024, and 1 center hole 5025. It provides both flexible sealing and buffering protection: when under pressure, the inner high-temperature resistant silicone pad 502 can adaptively fill the gap between the inner flange 501 and the environmental test chamber body 100, forming a sealing layer that seals the entire test port of the environmental test chamber body 100; effectively avoiding rigid contact between the inner flange 501 and the environmental test chamber body 100, preventing metal surface wear and stress concentration.

[0103] like Figure 22 As shown, the clamping mechanism 60 is made of 304 stainless steel and consists of one M16 screw 601 with a notch on one side and two M16 nuts 602. They cooperate to clamp the outer flange 401 and the inner flange 501, sealing the test port of the environmental test chamber 100. The notch on one side of the M16 screw 601 matches the boss of the center hole of the outer flange 401 and the inner flange 501, ensuring that all holes in the outer flange 401 and the inner flange 501 correspond, facilitating the installation of the entire sealing mechanism.

[0104] The operating procedures for using the environmental testing equipment calibration device are as follows: 1. Install a sliding positioning mechanism for the temperature and humidity sensor. 1) First, according to Figure 1 , Figure 2 Determine the required number of sliding positioning mechanisms for the temperature and humidity sensors, and then arrange the required sliding positioning mechanisms according to... Figure 3 After assembly, refer to Figure 11 , Figure 12 Place them into the working space of the environmental test chamber 100.

[0105] 2) Observe whether the sliding mechanism 20 is in a vertical position. If the sliding mechanism 20 is found to be tilted, the height of the base 103 needs to be adjusted by rotating the base fine adjustment screw M12 106 to make the sliding mechanism 20 in a vertical position.

[0106] 3) Adjust the length of the telescopic rod (middle) 203 and the telescopic rod (upper) 205 according to the height of the working space of the environmental testing equipment. Loosen the M6 ​​locking screws 207 on the fixing block (upper) 204 and the fixing block (lower) 202. At this time, the telescopic rod (middle) 203 and the telescopic rod (upper) 205 can slide up and down. After adjusting to the appropriate length, tighten the M6 ​​locking screws 207 to lock the telescopic rod (middle) 203 and the telescopic rod (upper) 205.

[0107] 4) Adjust the position of the sliding control module 30: Loosen the tightening handles 3015 and 3025 on the sliding control module 30 to open and remove the slider, then install it in the appropriate position. The lower slider 302 can be locked onto the cylindrical surface of the telescopic rod (middle) 203 or the telescopic rod (lower) 201, and the upper slider 301 can be locked onto the cylindrical surface of the telescopic rod (upper) 205. This completes the installation of the temperature and humidity sensor sliding positioning mechanism. 2. Install the sealing mechanism for the test port of the environmental testing equipment. 1) Install the sealing mechanism of the test port of the environmental testing equipment according to... Figure 13 After assembly, refer to Figure 23 , Figure 24 Place the outer sealing mechanism 40 of the chamber into the test port of the environmental test chamber 100; 2) Reference Figure 23 , Figure 24 Screw an M16 nut 602 into one end of an M16 screw 601, and then insert the other end of the M16 screw 601 through the boss-type center hole 4013 of the outer flange 401. The notch side of the M16 screw 601 must match and align with the boss of the boss-type center hole 4013 of the outer flange 401. 3) Reference Figure 23 , Figure 24 The inner sealing mechanism 50, which is composed of the inner flange 501 and the inner high-temperature resistant silicone gasket 502 bonded together, is placed inside the environmental test chamber 100, with the inner high-temperature resistant silicone gasket 502 facing the stainless steel pipe side. 4) Reference Figure 23 , Figure 24 Insert the inner sealing mechanism 50 into the environmental test chamber 100 from the inside along the M16 screw 601. The boss of the inner flange 501's center hole 5013 must be matched and aligned with the notch side of the M16 screw 601. 5) Reference Figure 23 , Figure 24 After the inner sealing mechanism 50 of the box is inserted into the M16 screw 601, the outer sealing mechanism 40 of the box is kept stationary, and the inner flange 501 is pushed so that all stainless steel pipes pass through the corresponding holes of the inner flange 501.

[0108] 6) Reference Figure 23 , Figure 24 After all the stainless steel pipes pass through the corresponding holes of the inner flange 501, screw the M16 nut 602 inside the environmental test chamber body 100 into the M16 screw 601, and tighten the M16 nut 602 close to the inner flange 501 to prevent the stainless steel pipes from coming out of the holes of the inner flange 501. 7) Reference Figure 23, Figure 24 Push the outer sealing mechanism 40 and the inner sealing mechanism 50 of the chamber to the test port of the environmental test chamber 100, and then use a sleeve to tighten the two M16 nuts 602 of the clamping mechanism 60. The installation of the test port sealing mechanism of the environmental test equipment is complete. 3. Tighten the temperature sensor cable 300. 1) Loosen the M10 gland clamping cap 4041 of the temperature sensor cable 300 to be threaded through until the M10 gland silicone sealing ring 4042 is completely unloaded; 2) Insert the end of the temperature sensor through the center hole of the M10 gland silicone sealing ring 4042 on the outside of the chamber, and then through the stainless steel tube 406 to the inside of the environmental test chamber 100. 3) After the temperature sensor cable inside the box has reached the appropriate length (300mm), tighten the M10 gland cap 4041 by hand to lock the cable.

[0109] 4) Pass the temperature sensor cable 300, which is introduced into the box, directly through the center hole of the M16 gland silicone sealing ring 3032, and tighten the M16 gland clamping cap 3031 by hand to lock the cable.

[0110] 4. Tighten the humidity sensor cable 200. Because the humidity sensor tip with a diameter greater than 9mm cannot pass through the center hole of the M16 gland silicone sealing ring at the cable insertion point, a narrow slit of about 0.1mm is made on one side of the M16 gland silicone sealing ring 4052 or 3032 used to lock the humidity sensor cable 200. The cable is inserted through the slit. The specific operating steps are as follows: 1) Remove the humidity sensor from the connector; 2) Loosen and remove the M16 gland clamping cap 4051 that is to be inserted into the humidity sensor; 3) Remove the M16 gland head silicone sealing ring 4052; 4) Thread the humidity sensor cable into the sensor connector via an M16 gland 4051 clamping cap; 5) Insert the humidity sensor cable through the side cut of the M16 gland silicone sealing ring 4052; 6) Place the silicone sealing ring 4052 of the M16 gland with the cable through it back into the M16 gland body 4053; 7) Run the humidity sensor cable 200 through the stainless steel pipe 407 to the inside of the environmental test chamber 100; 8) After the humidity sensor cable inside the box has reached the appropriate length, tighten the M16 gland cap 4051 by hand to lock the cable.

[0111] 9) Loosen and remove the M16 gland clamping cap 3031 that is to be inserted into the humidity sensor; 10) Remove the M16 gland head silicone sealing ring 3032; 11) Thread the humidity sensor cable and sensor connector through the M16 gland 3031 clamping cap; 12) Insert the humidity sensor cable through the side cut of the M16 gland silicone sealing ring 3032; 13) Place the silicone sealing ring 3032 of the M16 gland with the cable through it back into the M16 gland body 3033; 14) Tighten the M16 gland cap 3031 by hand to lock the cable.

[0112] 15) Connect the humidity sensor terminal to the humidity sensor cable.

[0113] 5. Install silicone plug 403 If fewer than 19 temperature and humidity sensors are required when calibrating environmental testing equipment, the M10 gland locking parts 404 and M16 gland locking parts 405 that are not passing through the temperature and humidity sensor cables must be sealed with silicone plugs 403. The specific installation steps for silicone plugs 403 are as follows: 1) Loosen the M10 gland nut 4041 and the M16 gland nut 4051; 2) Insert the silicone plug 403 into the center hole of the M10 gland silicone sealing ring 4042 and the M16 gland silicone sealing ring 4052; 3) Tighten the M10 gland nut 4041 and the M16 gland nut 4051.

[0114] After positioning and locking all temperature and humidity sensors, connect them to the electrical testing equipment according to the calibration specifications for temperature and humidity parameters of environmental testing equipment (JJF1101). Collect and record data as required by the specifications, and obtain the calibration results through data processing. After calibration, wait for the equipment temperature to return to room temperature before removing the temperature and humidity sensors and disassembling the device.

[0115] In summary, the positioning mechanism and method for temperature and humidity sensors during the calibration of environmental testing equipment, and the sealing mechanism and method for the test port of environmental testing equipment proposed in this invention, through careful design of the sliding positioning mechanism and the test port sealing mechanism, solve the problems existing in the prior art: 1. Traditional temperature measuring racks have serious insufficient equipment compatibility, making it difficult to meet the diverse calibration needs of environmental testing equipment of different models and sizes; 2. In the fixing process of temperature and humidity sensors, the conventional fixing methods of wire binding or aluminum foil tape adhesion easily lead to tight contact between the measuring end and the temperature measuring rack, which not only greatly reduces the efficiency of calibration work, but also directly affects the accuracy and validity of measurement data; 3. Existing pin-type columns The telescopic rod uses a stop-and-go height adjustment system, which can only lock at fixed intervals and cannot achieve fine-tuning of height by sliding, resulting in poor positioning accuracy and insufficient height adaptability; 4. Traditional rubber plugs have poor equipment compatibility and cannot meet the diverse calibration needs of test ports of different sizes; 5. It is difficult to achieve a tight fit between multiple cables and the test port, and the resulting gaps cause gas exchange between the atmospheric environment and the internal environment of the equipment, which seriously interferes with the stability of the temperature and humidity field and leads to deviations in calibration data; 6. Rubber materials are easily affected by environmental factors and age. With the increase of usage time, the sealing performance gradually decreases, which not only reduces calibration efficiency but may also cause inaccurate calibration results due to poor sealing.

[0116] In summary, the uniqueness of this invention lies in its improved compatibility of the temperature measuring frame, its simple structure, convenient operation, rapid assembly and disassembly, high positioning accuracy, and good durability; it also improves the compatibility, sealing performance, and durability of the test port sealing mechanism, while being easy to operate and enabling rapid assembly, disassembly, and positioning; and it enhances the calibration efficiency and accuracy of environmental testing equipment.

[0117] In summary, the environmental testing equipment calibration device and method proposed in this invention further improve user experience, calibration efficiency, and accuracy, demonstrating forward-thinking design and practical process improvements. It has significant economic and social benefits, promotes industry calibration standardization, and will play an important role in the field of thermal metrology and calibration.

[0118] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the inventive concept of the present invention and the description and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A calibration device for environmental testing equipment, characterized in that, include: The device includes a temperature and humidity sensor sliding positioning mechanism and an environmental testing equipment test port sealing mechanism. The temperature and humidity sensor sliding positioning mechanism is located inside the environmental testing equipment and is used to accurately fix the spatial position of the temperature and humidity sensor. The temperature and humidity sensor cable is brought in or out through the environmental testing equipment test port sealing mechanism. The temperature and humidity sensor sliding positioning mechanism includes a stabilization control module for providing adjustable base support; a sliding mechanism mounted on the stabilization control module, whose height is adjustable in multiple levels; and a sliding control module mounted on the sliding mechanism for positioning and locking the temperature and humidity sensor cable. The environmental testing equipment test port sealing mechanism is located at the test port of the environmental testing chamber and includes: an outer sealing mechanism located outside the test port for providing a mounting base and sealing and locking the inserted sensor cable; an inner sealing mechanism located inside the test port, opposite to the outer sealing mechanism, which forms an inner seal and buffer protection through elastic deformation; and a clamping mechanism connecting and clamping the outer and inner sealing mechanisms, pressing them against the inner and outer sides of the test port.

2. The environmental testing equipment calibration device according to claim 1, characterized in that, The stabilization control module includes a base, at least three base support plates, and at least three base fine-tuning screws. The base support plates are placed on the environmental test chamber and have threaded holes. The base has a central portion and multiple support arms extending outward from the central portion, with each support arm having a vertical threaded hole at its end. The base fine-tuning screws are screwed into both the vertical threaded holes of the base and the threaded holes of the base support plates. By rotating the base fine-tuning screws, the height of the base relative to the base support plates can be adjusted, thereby leveling the base. The central portion of the base has a connecting threaded hole for connecting the sliding mechanism.

3. The environmental testing equipment calibration device according to claim 2, characterized in that, The sliding mechanism includes at least two telescopic rods that are sequentially sleeved from bottom to top. The lower end of the lowest telescopic rod is fixedly connected to the threaded hole of the base. A fixing block and a locking screw are provided at the sleeve joint of two adjacent telescopic rods. The upper end of the lower telescopic rod is fixedly connected to the fixing block, and the upper telescopic rod slides through the fixing block. A radial threaded hole is opened on the fixing block, and the locking screw is screwed into the radial threaded hole and abuts against the upper telescopic rod to lock the relative position of the two telescopic rods.

4. The environmental testing equipment calibration device according to claim 1, characterized in that, The sliding control module includes at least one slider and a gland locking member mounted on the slider; The slider can be locked onto the outer circumference of any telescopic rod section, and the gland locking member has an axial channel for the temperature and humidity sensor cable to pass through, and can lock the inserted cable by radial contraction.

5. The environmental testing equipment calibration device according to claim 4, characterized in that, The slider includes a first clamping block, a second clamping block, a hinged screw, a tightening handle, and a connecting pin. One side of the first clamping block and the second clamping block are hinged together by the connecting pin, and the other side is connected by the hinged screw and the tightening handle. One end of the hinged screw is hinged to the first clamping block by the pin, and the other end is provided with an external thread. One end of the tightening handle is provided with a threaded hole that engages with the hinged screw. When the tightening handle is rotated, it pushes the second clamping block against the first clamping block, so that the two clamping blocks hold the corresponding telescopic rod tightly. The arc surfaces of the first and second clamping blocks that contact the telescopic rod are provided with anti-slip vertical grooves.

6. The environmental testing equipment calibration device according to claim 4, characterized in that, The gland locking component includes a clamping cap, a silicone sealing ring, a body, and a fixing nut; the body passes through a positioning hole on the first clamping block and is locked by the fixing nut; the silicone sealing ring is placed inside the body, and the clamping cap is threadedly connected to the body. When the clamping cap is tightened, the silicone sealing ring is squeezed to shrink radially, so as to hold the inserted cable tightly.

7. The environmental testing equipment calibration device according to claim 1, characterized in that, The outer sealing mechanism of the chamber includes an outer flange, an outer high-temperature resistant silicone gasket, and multiple gland locks for fixing sensor cables. The outer flange has multiple gland lock positioning holes arranged in an array, and the outer high-temperature resistant silicone gasket has multiple corresponding through holes. The outer high-temperature resistant silicone gasket is placed between the outer flange and the outer wall of the test chamber. Each gland lock penetrates and is fixed in the corresponding outer flange positioning hole and the outer high-temperature resistant silicone gasket through hole, forming an axial channel for the sensor cable to pass through, and can tighten and seal the inserted cable by radial contraction.

8. The environmental testing equipment calibration device according to claim 1, characterized in that, The sealing mechanism inside the chamber includes an inner flange and an inner high-temperature resistant silicone gasket, which are bonded together with high-temperature resistant adhesive. The inner flange has wire holes corresponding to the positions of the locking parts of each gland, and the inner high-temperature resistant silicone gasket has corresponding tapered guide holes for guiding cables through and adaptively filling the gap between the inner flange and the inner wall of the test chamber when under pressure, thus forming a seal.

9. The environmental testing equipment calibration device according to claim 7, characterized in that, The outer sealing mechanism of the chamber also includes several silicone plugs, which are used to insert into the center hole of the gland locking part without sensor cables during calibration. They fit tightly through elastic deformation, blocking air from entering the test chamber through the open channel.

10. A method of using an environmental testing equipment calibration device, employing the environmental testing equipment calibration device according to any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Determine the number and spatial location of temperature and humidity sensors based on the chamber volume of the environmental testing equipment; Step 2: Based on the number and spatial location of the temperature and humidity sensors determined in Step 1, select the corresponding number of temperature and humidity sensor sliding positioning mechanisms, and adjust the sliding mechanism and the sliding control module according to the spatial location of the temperature and humidity sensors. Step 3: The temperature and humidity sensor cable is brought together and introduced or led out through the sealing mechanism of the test port of the environmental test equipment, and the temperature and humidity sensor cable is locked by the sliding control module and the sealing mechanism of the test port of the environmental test equipment. Step 4: After positioning and locking all temperature and humidity sensors, connect the temperature and humidity sensors to the electrical testing equipment according to the requirements of the JJF1101 Environmental Test Equipment Temperature and Humidity Parameter Calibration Specification. Collect and record data according to the specification requirements, and obtain the calibration results through data processing. After calibration, wait for the equipment temperature to return to room temperature, then remove the temperature and humidity sensors and disassemble the device.

Images