Positioning device for calibrating infrared radiation thermometer
By designing a positioning device for calibration of infrared radiation thermometers, components such as positioning plates, support plates and electric push rods are used to ensure that the temperature measurement point falls in the center of the temperature field, solving the problem of inaccurate data acquisition during calibration and improving the accuracy and standardization of calibration.
Patent Information
- Application Number
- CN202421827317.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-30
AI Technical Summary
When calibrating infrared radiation thermometers, the calibrator may not take data in the same area when collecting data at different temperature measurement points, resulting in errors between the calibration values and the standard values, affecting the accuracy of the calibration.
A positioning device including a workbench, a positioning frame, a positioning plate, a support plate and a clamping device is designed. The positioning plate is installed on the black body furnace through locking bolts, and the arrangement of circular holes and elliptical holes is used, combined with an electric push rod and a measuring rod to ensure that the temperature measurement point of the infrared radiation thermometer falls in the central area of the temperature field.
Through this positioning device, the calibrator can quickly and accurately find the central area of the black body furnace temperature field, improve the accuracy and standardization of the calibration, and ensure the effective traceability and uniformity of the thermometer.
Smart Images
Figure CN222912898U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of thermal instrument calibration, in particular to a positioning device for calibrating an infrared radiation thermometer. Background Art
[0002] For the calibration and verification of infrared radiation thermometers, the comparison method is usually adopted, that is, through a highly stable blackbody furnace 4, the temperature reproduced by the standard device is compared with the radiation thermometer to be inspected to realize the transfer of the quantity value.
[0003] When calibrating an infrared radiation thermometer, it is necessary to repeatedly read the values at different temperature measurement points, collect relevant data for conversion. During the operation process, the verification regulation clearly requires that the infrared temperature measurement point needs to aim at the center point of the radiation source temperature field for reading. As Figure 1 shown, the temperature field region 12 of the blackbody furnace 4 is usually a circular cavity with a radius of 20 cm. There is a temperature difference between each point in the temperature field region 12 and the center. When the calibrator actually operates, the data may not be collected in the same area each time, resulting in an error between the calibrated value and the standard value, and poor calibration accuracy. Content of the Utility Model
[0004] The technical problem to be solved by the utility model is to provide a positioning device for calibrating an infrared radiation thermometer aiming at the above deficiencies of the prior art, enabling the calibrator to collect data in the central area of the radiation source temperature field as much as possible during the operation process, ensuring the standardization of calibration and the accuracy of the values, and having the characteristics of wide application range and strong practicability.
[0005] The technical solution adopted by the utility model is: a positioning device for calibrating an infrared radiation thermometer, including a workbench. A positioning frame for placing a blackbody furnace is provided on one side of the workbench. A positioning plate is provided on one side of the temperature field region of the blackbody furnace. The positioning plate is installed on the blackbody furnace. A through circular hole is opened in the middle of the positioning plate. Elliptical holes communicating with the circular hole are opened on both the upper and lower sides of the positioning plate. A support plate for placing an infrared radiation thermometer is provided on the other side of the workbench. Two symmetrically arranged clamping devices are provided on the support plate.
[0006] As a further improvement, the cross-section of the positioning plate is in an L shape, and the positioning plate is installed on the blackbody furnace through a locking bolt.
[0007] Further, the diameter D of the circular hole is 15 mm to 25 mm, and the distance L between the upper and lower elliptical holes is 30 mm to 50 mm.
[0008] Furthermore, the clamping device includes a threaded rod, a vertical plate, a clamping block and a handle, the vertical plate is vertically arranged on the support plate, the threaded rod is threadedly connected to the vertical plate, the clamping block is rotatably connected to one end of the inner side of the threaded rod, and the handle is connected to the other end of the threaded rod.
[0009] Furthermore, an electric push rod is provided at the bottom of the workbench, and an output end of the electric push rod passes through the workbench and is connected to the support plate.
[0010] Furthermore, a measuring rod for measuring the rising height of the support plate is vertically provided on the workbench, and the measuring rod slides through the support plate.
[0011] Beneficial Effects
[0012] Compared with the prior art, the utility model has the following advantages:
[0013] The utility model discloses a positioning device for calibrating an infrared radiation thermometer. First, a positioning plate is installed on a black body furnace by means of a locking bolt, so that a circular hole and an elliptical hole are arranged in the middle of a temperature field area. Then, the infrared radiation thermometer is placed on a supporting plate, and a threaded rod is driven by rotating handles on both sides. Under the advancement of the threaded rod, a clamping block is driven to approach the infrared radiation thermometer, and finally the infrared radiation thermometer is clamped and fixed on the supporting plate. Then, the supporting plate is lifted and lowered by an electric push rod, so that a temperature measuring point of the infrared radiation thermometer falls into the circular hole. At the same time, the value on the measuring rod is recorded. When calibrating a radiation thermometer with three temperature measuring points, The three temperature measuring points are respectively arranged on the circular hole and the upper and lower elliptical holes. Each time data is collected, the support plate is pushed to the same height according to the value of the measuring rod. Combined with the added positioning plate, the temperature field area of the blackbody furnace can be reduced, so that the calibrator can quickly find the center area of the bull's eye during the calibration operation, thereby improving work efficiency. At the same time, the measuring point is controlled as much as possible to read in the center area of the temperature field. This not only meets the requirements of the verification procedures, but also makes the repeatability and stability of the measurement data more accurate, making the entire calibration process more standardized, ensuring the effective traceability of the radiation thermometer, and ensuring the uniformity of the temperature value. It is easy to use and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of a black body furnace in the prior art;
[0015] Figure 2 This is a schematic diagram of the main structure of the utility model;
[0016] Figure 3 It is a side structural schematic diagram of the utility model.
[0017] Wherein: 1 - workbench, 2 - clamping device, 3 - positioning frame, 4 - blackbody furnace, 5 - positioning plate, 6 - support plate, 7 - electric push rod, 8 - measuring rod, 9 - locking bolt, 10 - circular hole, 11 - elliptical hole, 12 - temperature field area, 21 - vertical plate, 22 - handle, 23 - threaded rod, 24 - clamping block. Detailed implementation manner
[0018] The following further describes the present utility model with reference to specific embodiments in the accompanying drawings.
[0019] Refer to Figure 2-3 As shown, a positioning device for calibrating an infrared radiation thermometer of the present utility model includes a workbench 1. A positioning frame 3 for placing a blackbody furnace 4 is provided on one side of the workbench 1. A positioning plate 5 is provided on one side of the temperature field area 12 of the blackbody furnace 4. The positioning plate 5 is installed on the blackbody furnace 4. A through circular hole 10 is opened in the middle of the positioning plate 5. Elliptical holes 11 communicating with the circular hole 10 are opened on both the upper and lower sides of the positioning plate 5. A support plate 6 for placing an infrared radiation thermometer is provided on the other side of the workbench 1. Two symmetrically arranged clamping devices 2 are provided on the support plate 6. First, the positioning plate 5 is installed on the blackbody furnace 4 through a locking bolt 9, so that the circular hole 10 and the elliptical holes 11 are arranged in the middle position of the temperature field area 12. Then, the infrared radiation thermometer is placed on the support plate 6. By rotating the handles 22 on both sides to drive the threaded rod 23, the clamping block 24 is driven to approach the infrared radiation thermometer under the advancement of the threaded rod 23, and finally the infrared radiation thermometer is clamped and fixed on the support plate 6. Immediately afterwards, the support plate 6 is lifted and lowered by the electric push rod 7, so that the temperature measurement point of the infrared radiation thermometer falls into the circular hole 10. At the same time, the value on the measuring rod 8 is recorded. When calibrating a radiation thermometer with three temperature measurement points, the three temperature measurement points are respectively arranged on the circular hole 10 and the upper and lower elliptical holes 11. Each time data is collected, the support plate 6 is pushed to the same height according to the value of the measuring rod 8. Combining the added positioning plate 5, the temperature field area 12 of the blackbody furnace 4 can be reduced, enabling the calibrator to quickly find the central area of the bull's-eye during the calibration operation, improving work efficiency. At the same time, the measurement points are controlled to read in the central area of the temperature field as much as possible, not only meeting the requirements of the verification regulation, making the repeatability and stability of the measurement data more accurate, making the entire calibration process more standardized, ensuring the effective traceability of the radiation thermometer, and ensuring the unity of the temperature value.
[0020] Specifically, the cross-section of the positioning plate 5 is in an L shape, which can quickly position, enabling the positioning plate 5 to be quickly and accurately installed on the blackbody furnace 4. The positioning plate 5 is installed on the blackbody furnace 4 through a locking bolt 9 and is detachably installed through the locking bolt 9, facilitating disassembly and installation.
[0021] Preferably, the diameter D of the circular hole 10 is 15 mm to 25 mm, and the distance L between the upper and lower elliptical holes 11 is 30 mm to 50 mm. The temperature field region 12 of the blackbody furnace 4 can be reduced, enabling the calibrator to quickly find the central region of the bull's-eye during calibration operations, improving work efficiency. At the same time, the measurement points are preferably controlled to take readings in the central region of the temperature field, not only meeting the requirements of the verification regulation, making the repeatability and stability of the measurement data more accurate, making the entire calibration process more standardized, ensuring the effective traceability of the radiation thermometer, and ensuring the unity of the temperature value.
[0022] Further, the clamping device 2 includes a threaded rod 23, a vertical plate 21, a clamping block 24, and a handle 22. The vertical plate 21 is vertically arranged on the support plate 6. The threaded rod 23 is threadedly connected to the vertical plate 21. The clamping block 24 is rotatably connected to the inner end of the threaded rod 23. The handle 22 is connected to the other end of the threaded rod 23. By rotating the handles 22 on both sides to drive the threaded rod 23, as the threaded rod 23 advances, the clamping block 24 is driven to approach the infrared radiation thermometer, and finally the infrared radiation thermometer is clamped and fixed on the support plate 6, effectively preventing the infrared radiation thermometer from moving during the measurement process, generating measurement values at different positions, causing test errors, and affecting the measurement results.
[0023] Further, an electric push rod 7 is provided at the bottom of the workbench 1. The output end of the electric push rod 7 passes through the workbench 1 and is connected to the support plate 6. Further, a measuring rod 8 for measuring the rising height of the support plate 6 is vertically provided on the workbench 1. The measuring rod 8 slidably passes through the support plate 6. By lifting and lowering the support plate 6 through the electric push rod 7, the temperature measurement point of the infrared radiation thermometer falls into the circular hole 10. At the same time, the value on the measuring rod 8 is noted. Each time data is collected, the support plate 6 is pushed to the same height according to the value of the measuring rod 8, making the repeatability and stability of the measurement data more accurate, making the entire calibration process more standardized, ensuring the effective traceability of the radiation thermometer, and ensuring the unity of the temperature value.
[0024] When the positioning device for calibrating an infrared radiation thermometer in this embodiment is in use, first, the positioning plate 5 is installed on the blackbody furnace 4 through the locking bolt 9, so that the circular hole 10 and the elliptical hole 11 are arranged at the middle position of the temperature field area 12. Then, the infrared radiation thermometer is placed on the support plate 6. By rotating the handles 22 on both sides to drive the threaded rod 23, with the advancement of the threaded rod 23, the clamping block 24 is driven to approach the infrared radiation thermometer, and finally the infrared radiation thermometer is clamped and fixed on the support plate 6. Immediately afterwards, the support plate 6 is lifted and lowered by the electric push rod 7, so that the temperature measurement point of the infrared radiation thermometer falls into the circular hole 10. At the same time, the value on the measuring rod 8 is noted. When calibrating a radiation thermometer with three temperature measurement points, the three temperature measurement points are respectively arranged on the circular hole 10 and the upper and lower elliptical holes 11. Each time data is collected, the support plate 6 is pushed to the same height according to the value of the measuring rod 8. Combined with the added positioning plate 5, the temperature field area 12 of the blackbody furnace 4 can be reduced, enabling the calibrator to quickly find the central area of the bull's-eye during the calibration operation, improving work efficiency. At the same time, the measurement point is controlled to read in the central area of the temperature field as much as possible, not only meeting the requirements of the verification regulation, making the repeatability and stability of the measurement data more accurate, making the entire calibration process more standardized, ensuring the effective traceability of the radiation thermometer, and ensuring the unity of the temperature value. The positioning device for calibrating an infrared radiation thermometer of the present utility model enables the calibrator to collect data in the central area of the radiation source temperature field as much as possible during the operation process, ensuring the standardization of calibration and the accuracy of the value, and having the characteristics of wide application range and strong practicability.
[0025] The above are only the preferred embodiments of the present utility model. It should be pointed out that for those skilled in the art, without departing from the structure of the present utility model, several deformations and improvements can still be made, and these will not affect the implementation effect of the present utility model and the practicability of the patent.
Claims
1. A positioning device for calibrating an infrared radiation thermometer, characterized in that: The invention comprises a workbench (1), wherein a positioning frame (3) for placing a black body furnace (4) is provided on one side of the workbench (1), a positioning plate (5) is provided on one side of a temperature field region (12) of the black body furnace (4), the positioning plate (5) is installed on the black body furnace (4), a circular hole (10) is provided through the middle of the positioning plate (5), and the positioning plates (5) on the upper and lower sides of the circular hole (10) are provided with elliptical holes (11) connected to the circular hole (10), and a support plate (6) for placing an infrared radiation thermometer is provided on the other side of the workbench (1), and two symmetrically arranged clamping devices (2) are provided on the support plate (6).
2. A positioning device for calibrating an infrared radiation thermometer according to claim 1, characterized in that: The cross section of the positioning plate (5) is L-shaped, and the positioning plate (5) is mounted on the black body furnace (4) via locking bolts (9).
3. The positioning device for calibrating an infrared radiation thermometer according to claim 1, characterized in that: The diameter D of the circular hole (10) is 15 mm to 25 mm, and the distance L between the elliptical holes (11) on the upper and lower sides is 30 mm to 50 mm.
4. A positioning device for calibrating an infrared radiation thermometer according to claim 1, characterized in that: The clamping device (2) comprises a threaded rod (23), a vertical plate (21), a clamping block (24) and a handle (22); the vertical plate (21) is vertically arranged on the support plate (6); the threaded rod (23) is threadedly connected to the vertical plate (21); the clamping block (24) is rotatably connected to one end of the inner side of the threaded rod (23); and the handle (22) is connected to the other end of the threaded rod (23).
5. The positioning device for calibrating an infrared radiation thermometer according to claim 1, characterized in that: An electric push rod (7) is provided at the bottom of the workbench (1), and an output end of the electric push rod (7) passes through the workbench (1) and is connected to a support plate (6).
6. A positioning device for calibrating an infrared radiation thermometer according to claim 1, characterized in that: A measuring rod (8) for measuring the rising height of the support plate (6) is vertically arranged on the workbench (1), and the measuring rod (8) slides through the support plate (6).