Small high-temperature blackbody radiation source

Abstract

The utility model discloses a small-sized high-temperature blackbody radiation source, which comprises a shell, a high-temperature cavity, a heating control panel and a temperature controller are arranged in the shell, and a temperature measuring probe butt joint interface is arranged on the outer wall of the shell; an alundum tube is arranged in the middle of the high-temperature cavity, heating rods are symmetrically arranged in the high-temperature cavity relative to the alundum tube, a temperature sensor is arranged in the alundum tube, and the alundum tube is arranged in the horizontal direction and is communicated with the butt joint interface of the temperature measuring probe; the heating control plate and the temperature sensor are both electrically connected with the temperature controller, and the heating rod is electrically connected with the heating control plate. According to the utility model, a stable and accurate temperature control effect can be realized, and errors of calibration or calibration of the infrared thermometer are reduced.

Description

Technical Field

[0001] This utility model relates to the field of blackbody radiation technology, and in particular to a small high-temperature blackbody radiation source. Background Technology

[0002] Blackbody radiation sources, as a standard infrared radiation source, are widely used in the infrared calibration of infrared radiation thermometers, infrared thermal imagers, and infrared screening instruments. Most existing small high-temperature blackbody radiation sources generate heat by wrapping heating wires or heating films around the outer surface of the blackbody cavity. These blackbody radiation sources suffer from long heating times, slow temperature stabilization times, and poor stability, leading to significant errors during the calibration or standardization of infrared radiation thermometers. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a small high-temperature blackbody radiation source that can achieve stable and accurate temperature control and reduce the error in calibrating or setting infrared thermometers.

[0004] This utility model provides a small high-temperature blackbody radiation source, characterized in that it includes a shell, a high-temperature cavity, a heating control board and a temperature controller are provided inside the shell, and a temperature probe docking interface is provided on the outer wall of the shell.

[0005] A corundum tube is centrally located within the high-temperature cavity, and heating rods are symmetrically arranged within the high-temperature cavity about the corundum tube. A temperature sensor is installed inside the corundum tube, and the corundum tube has a horizontal interface that connects to the temperature probe.

[0006] The heating control board and the temperature sensor are both electrically connected to the temperature controller, and the heating rod is electrically connected to the heating control board.

[0007] Furthermore, a fixing frame is provided inside the housing, and the high-temperature cavity is fixedly mounted on the fixing frame.

[0008] Furthermore, the heating rods are arranged symmetrically in two rows about the corundum tube, with multiple heating rods evenly arranged in each row.

[0009] Furthermore, a support plate is provided on the top of the high-temperature cavity, and the heating rod is fixedly connected to the support plate by a fixing ceramic clamp.

[0010] Furthermore, the high-temperature cavity is made of aluminum silicate ceramic fiber material.

[0011] Furthermore, the heating rod is a silicon molybdenum heating rod.

[0012] Furthermore, folding handles are symmetrically arranged on both outer walls of the housing.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention features a high-temperature cavity within the housing, housing a heating rod and a temperature sensor. The heating rod heats the high-temperature cavity rapidly. The temperature sensor detects the temperature within the high-temperature cavity and feeds it back to a temperature controller. The temperature controller and heating control board then control the heating rod to either heat up or stop heating, achieving closed-loop temperature control for stable and accurate temperature control. The heating rods are evenly distributed within the high-temperature cavity, ensuring a uniform temperature field and reducing errors in calibrating or setting up infrared thermometers.

[0015] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0016] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0017] Figure 1 This is a front perspective view of the present invention;

[0018] Figure 2 This is a rear view of the present invention;

[0019] Figure 3 This is the right view of the present invention;

[0020] Figure 4 This is a top view of the present invention;

[0021] Figure 5 This is a front view of the present invention;

[0022] The diagram shows the following components: 1. Housing; 2. High-temperature chamber; 3. Heating control board; 4. Temperature controller; 5. Temperature probe interface; 6. Corundum tube; 7. Heating rod; 8. Temperature sensor; 9. Mounting bracket; 10. Support plate; 11. Fixing ceramic clip; 12. Folding handle; 13. First cooling fan; 14. Second cooling fan; 15. Strip-shaped heat dissipation vent; 16. Main power switch; 17. Temperature controller switch. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0024] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] Please refer to Figures 1-5 The present invention provides a small high-temperature blackbody radiation source for calibrating or standardizing an infrared thermometer. The blackbody radiation source of this application includes a housing 1, a high-temperature cavity 2, a heating control board 3 and a temperature controller 4 are provided inside the housing 1, and a temperature probe docking interface 5 is provided on the outer wall of the housing 1. Specifically, the high-temperature cavity 2 is centrally located inside the housing 1.

[0026] A corundum tube 6 is centrally located inside the high-temperature chamber 2, and heating rods 7 are symmetrically arranged inside the high-temperature chamber 2 about the corundum tube 6. A temperature sensor 8 is installed inside the corundum tube 6, and the corundum tube 6 is connected to the temperature probe interface 5 in the horizontal direction.

[0027] The heating control board 3 and the temperature sensor 8 are both electrically connected to the temperature controller 4, and the heating rod 7 is electrically connected to the heating control board 3.

[0028] Specifically, the outer wall of the temperature probe docking interface 5 is set in a conical shape to facilitate the docking of the temperature probe on the infrared thermometer with the temperature probe docking interface 5, so that the temperature probe is directly facing the inside of the corundum tube 6. During calibration or standardization, the preset temperature is set by the temperature controller 4. The heating control board 3 receives the signal from the temperature controller 4 and controls the heating rod 7 to heat. When the heating rod 7 passes through, the preset temperature is reached in the high-temperature cavity 2. At this time, the temperature inside the corundum tube 6 is detected by the temperature sensor 8 and fed back to the temperature controller 4. The temperature controller 4 and the heating control board 3 keep the temperature inside the high-temperature cavity 2 constant. Through closed-loop temperature control, an accurate and stable temperature control is formed inside the high-temperature cavity 2, reducing calibration errors.

[0029] Preferred, such as Figure 1 As shown, a fixing frame 9 is provided inside the housing 1, and the high-temperature cavity 2 is fixedly mounted on the fixing frame 9. The fixing frame 9 is used to fix and protect the high-temperature cavity 2.

[0030] Preferred, such as Figure 1As shown, the heating rods 7 are arranged symmetrically in two rows about the corundum tubes 6, with multiple heating rods 7 evenly arranged in each row. Specifically, there are six heating rods 7 arranged symmetrically in two rows about the corundum tubes 6, with three rods evenly spaced in each row, used to uniformly heat the inside of the high-temperature cavity 2, so as to form a stable and uniform temperature field inside the high-temperature cavity 2.

[0031] Preferred, such as Figure 1 As shown, a support plate 10 is provided on the top of the high-temperature cavity 2, and the heating rod 7 is fixedly connected to the support plate 10 through a fixing ceramic clamp 11.

[0032] Preferred, such as Figure 1 As shown, the high-temperature cavity 2 is made of aluminum silicate ceramic fiber. It has good heat preservation effect, prevents heat loss, and keeps the internal temperature field of the high-temperature cavity 2 stable. Specifically, the radiation temperature range of the high-temperature cavity 2 is between 800℃ and 1600℃.

[0033] Preferably, the heating rod 7 is made of silicon molybdenum material. Specifically, the use of silicon molybdenum heating rods can achieve high-temperature radiation temperatures of 800℃ to 1600℃ and is easy to use.

[0034] Preferred, such as Figure 2 and Figure 3 As shown, folding handles 12 are symmetrically arranged on both outer walls of the housing 1. The folding handles 12 facilitate the handling or movement of the housing 1, and can also move the housing 1 to the infrared thermometer to be calibrated, avoiding the need to disassemble the infrared thermometer for calibration, thus improving the convenience of calibration.

[0035] Preferred, such as Figure 1 and Figure 5 As shown, a first cooling fan 13 is provided on the outer wall of the housing 1 for dissipating heat from the housing 1 after operation; a second cooling fan 14 is provided inside the housing 1 on one side of the heating control plate 3 for dissipating heat from the heating control plate 3. A top plate is provided on the top of the housing 1, and multiple sets of strip-shaped heat dissipation vents 15 are arranged side by side on the top plate.

[0036] The back of the housing 1 is provided with an inspection port facing the corundum tube 6 for inspecting the temperature sensor 8 installed inside the corundum tube 6. A cover plate 18 is provided at the inspection port by bolts.

[0037] Furthermore, the housing 1 is also equipped with a main power switch 16 and a temperature controller switch 17.

[0038] Working principle:

[0039] When the required radiation temperature is between 800℃ and 1600℃, the blackbody radiation source of this application is connected to the mains power, then the main power switch 16 is turned on, and then the temperature controller switch 17 is turned on. The temperature is preset on the temperature controller 4. At this time, the heating control board 3 receives the signal from the temperature controller 4 and controls the heating rod 7 to heat the high-temperature cavity 2. When the temperature sensor 8 detects that the temperature inside the high-temperature cavity 2 has reached the preset temperature, the temperature sensor 8 transmits the temperature signal to the temperature controller 4, and the temperature controller 4 controls the heating rod 7 to stop heating, thereby achieving precise temperature control and keeping the radiation temperature inside the high-temperature cavity 2 constant, thus achieving a stable and accurate temperature control effect.

[0040] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0041] In the description of this specification, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A small high-temperature blackbody radiation source, characterized in that, The system includes a housing, which contains a high-temperature cavity, a heating control board, and a temperature controller. A temperature probe docking interface is provided on the outer wall of the housing. A corundum tube is centrally located within the high-temperature cavity, and heating rods are symmetrically arranged within the high-temperature cavity about the corundum tube. A temperature sensor is installed inside the corundum tube, and the corundum tube has a horizontal interface that connects to the temperature probe. The heating control board and the temperature sensor are both electrically connected to the temperature controller, and the heating rod is electrically connected to the heating control board.

2. The small high-temperature blackbody radiation source according to claim 1, characterized in that, A fixing frame is provided inside the housing, and the high-temperature cavity is fixedly mounted on the fixing frame.

3. A small high-temperature blackbody radiation source according to claim 1, characterized in that, The heating rods are arranged in two rows symmetrically about the corundum tube, with multiple heating rods evenly arranged in each row.

4. A small high-temperature blackbody radiation source according to claim 3, characterized in that, The top of the high-temperature cavity is provided with a support plate, and the heating rod is fixedly connected to the support plate by a fixing ceramic clamp.

5. A small high-temperature blackbody radiation source according to claim 1, characterized in that, The high-temperature cavity is made of aluminum silicate ceramic fiber.

6. A small high-temperature blackbody radiation source according to claim 1, characterized in that, The heating rod is a silicon molybdenum heating rod.

7. A small high-temperature blackbody radiation source according to claim 1, characterized in that, Folding handles are symmetrically arranged on both outer walls of the housing.

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