CN215064912U

CN215064912U - Blackbody radiation source

Info

Publication number: CN215064912U
Application number: CN202120474762.0U
Authority: CN
Inventors: 穆贵祥; 王立飞; 葛同府; 景念; 靳闪闪; 常亚伟; 王彦勋
Original assignee: Hebei Gaoda Intelligent Equipment Co Ltd
Current assignee: Hebei Gaoda Intelligent Equipment Co Ltd
Priority date: 2021-03-05
Filing date: 2021-03-05
Publication date: 2021-12-07
Anticipated expiration: 2031-03-05

Abstract

The utility model discloses a black body radiation source belongs to infrared radiation measurement technical field, and the black body radiation source includes the casing and fixes heater and the heat conductor in the casing, and the heater is located the heat conductor rear, is provided with the heat conduction arch on the heat conductor rear end face, and cavity between the adjacent heat conduction arch is for leading the heat chamber. The bottom surface of the heat conduction cavity, the rear end face of the heat conduction protrusion and the side face of the heat conduction protrusion can be in contact with heat, the heat conduction area of the heat conductor can be greatly increased in a limited space, the heat absorption and heat conduction speed is improved, heat can be timely transmitted to the radiation output hole of the anti-convection cover, and the calibration precision can be improved.

Description

Blackbody radiation source

Technical Field

The utility model belongs to the technical field of infrared radiometry, a black body radiation source is related to.

Background

The blackbody radiation source is used as a standard radiation source and widely applied to calibration of infrared radiation thermometers and infrared thermometers. Current black body radiation source includes the casing and fixes heater and the heat conductor in the casing, and the heater is located the heat conductor rear, and the heat that the heater produced passes through the radiation output hole department that the heat conductor transmitted the casing front end, and current heat conductor is flat structure, and only the rear end face and the heat contact of heat conductor, heat conduction area is limited, and heat conduction speed and calibration accuracy all remain to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome prior art's defect, designed a black body radiation source, can increase the heat conduction area of heat conductor greatly in finite space, improve heat conduction speed for the heat can in time transmit radiation output hole department, can improve the calibration accuracy.

The utility model adopts the following specific technical proposal: the utility model provides a black body radiation source, includes the casing, still includes heater and the heat conductor of fixing in the casing, and the heater is located the heat conductor rear, and the key lies in: the rear end face of the heat conductor is provided with heat conducting protrusions, and cavities between adjacent heat conducting protrusions are heat conducting cavities.

The thermal conductor is made of red copper.

The heat conductor is disc type structure, has two at least heat conduction protruding groups rather than coaxial setting on the heat conductor, and the circumferencial direction align to grid of heat conductor is followed to all heat conduction archs of same heat conduction protruding group, and the bellied height of heat conduction is D, and the height of heat conductor is D, D: d is (2-4): 1, the ratio of the end surface area of all the heat conducting bulges to the end surface area of the heat conductor is (2-5): 10.

the end surface of the heat conduction bulge facing the heater is provided with a heat storage and heat transfer column.

The end surface of the heat conduction bulge is provided with a screw hole, and the heat storage and heat transfer column is in threaded connection with the screw hole on the heat conduction bulge.

The casing includes the shell of tube-shape, sets up the thermal-insulated protection casing of shell front end and sets up the anti-convection cover who offers the radiation output hole in shell front end and center department, still including setting up the rear panel at the shell rear end, the ladder groove has been seted up to the preceding terminal surface of thermal-insulated protection casing, and anti-convection cover forms location structure with ladder groove joint, and the rear end of anti-convection cover passes behind the thermal-insulated protection casing and contacts with the heat conductor.

Still be provided with temperature control assembly in the shell, temperature control assembly is including setting up the temperature sensor of locating at heat conductor rear end face center and setting up the main control board between heater and rear panel, and the main control board is connected with rear panel fixed connection with the help of the main control fixed column, and temperature sensor's output is connected with the input of main control board, and the output of main control board is connected with the controlled end of heater.

And a stirring fan is further arranged on one side of the heater in the shell, and the controlled end of the stirring fan is connected with the output end of the main control board.

There is rather than coaxial setting and the opening tubbiness heat preservation towards the place ahead in the shell, and heater and stirring fan all are located the heat preservation inside, and the main control board is located the heat preservation rear, and the rear end face of thermal-insulated protection casing is sealed with the preceding terminal surface contact of heat preservation.

An inner cavity cover plate and a cylindrical inner cavity shell are coaxially arranged in the heat preservation layer, the front end of the inner cavity shell is in contact with the heat insulation protective cover, the rear end of the inner cavity shell is in contact with the inner cavity cover plate, the inner cavity cover plate is fixedly connected with the heat conductor through a cover plate fixing column, the stirring fan is fixed in front of the inner cavity cover plate through a fan fixing column, and the heater is also fixed in front of the inner cavity cover plate.

The utility model has the advantages that: be provided with the heat conduction arch on the heat conductor rear end face, cavity between the adjacent heat conduction arch is for leading the heat conduction chamber, the bottom surface in heat conduction chamber, the bellied rear end face of heat conduction and the bellied side of heat conduction all can contact with the heat, can the heat conduction area of greatly increased heat conductor in finite space, improve heat absorption heat conduction speed for the heat can in time be transmitted to the radiant output hole department of preventing convection current cover, can improve the calibration precision.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the rear end face of the heat conductor of the present invention.

Fig. 3 is a view from a-a of fig. 2.

Fig. 4 is an outline view of the present invention.

Fig. 5 is a left side view of fig. 4.

Fig. 6 is a right side view of fig. 4.

In the attached drawing, 1, a convection prevention cover, 2, a heat insulation protective cover, 3, a shell, 4, a heat conductor, 4-1, a heat conduction bulge, 5, an inner cavity shell, 6, a heat insulation layer, 7, a temperature sensor, 8, a heat storage and transfer column, 9, a cover plate fixing column, 10, a heater, 11, a stirring fan, 12, a fan fixing column, 13, an inner cavity cover plate, 14, a main control panel, 15, a main control fixing column, 16 and a rear panel.

Detailed Description

The present invention will be described in detail with reference to the following drawings and specific embodiments:

in a specific embodiment, as shown in fig. 1, a blackbody radiation source includes a housing, and further includes a heater 10 and a heat conductor 4 fixed in the housing, the heater 10 is located behind the heat conductor 4, a heat conducting protrusion 4-1 is disposed on a rear end face of the heat conductor 4, and a cavity between adjacent heat conducting protrusions 4-1 is a heat conducting cavity.

As a further improvement of the present invention, the heat conductor 4 is made of red copper, and the heat conductivity of red copper is 395W/(m · K), so that the heat absorption and heat conduction speed of the heat conductor 4 can be further increased.

As to the utility model discloses a further improvement, as shown in fig. 2, heat conductor 4 is disc type structure, has two at least heat conduction protruding groups rather than coaxial setting on heat conductor 4, and all heat conduction protruding 4-1 of same heat conduction protruding group are along heat conductor 4's circumferencial direction align to grid, and as shown in fig. 3, heat conduction protruding 4-1 highly be D, and heat conductor 4's height is D, D: d is (2-4): 1 and preferably 3: 1, the ratio of the end surface area of all the heat conducting protrusions 4-1 to the end surface area of the heat conductor 4 is (2-5): 10. The heat conducting area of the heat conductor is increased as much as possible in a limited space, so that the heat absorbing and conducting speed is increased.

As a further improvement of the utility model, a heat storage and transfer column 8 is arranged on the end surface of the heat conduction bulge 4-1 facing the heater 10. The arrangement of the heat storage and heat transfer column 8 can increase carriers for storing and absorbing heat in the shell, so that the heat storage is more, the heat conduction is fast, and the stability of the temperature in the shell can be improved. The utility model provides a heat-retaining heat transfer post 8 is preferred to be the copper post, and under the condition of same volume, the heat storage volume of copper is 2.8 times of aluminium, is close to the heat storage volume of water.

As a further improvement of the utility model, the screw hole is arranged on the end surface of the heat-conducting bulge 4-1, the heat-storage heat-transfer column 8 is in threaded connection with the screw hole on the heat-conducting bulge 4-1, the structure is simple, the connection is firm and reliable, the disassembly and the assembly are convenient and fast, and the time and the labor are saved.

As right the utility model discloses a further improvement, the casing includes the shell 3 of tube-shape, the thermal-insulated protection casing 2 of front end in setting up in shell 3 and set up and locate to set up the convection current cover 1 of preventing of offering the radiation output hole at shell 3 front end and center, still including setting up the rear panel 16 in shell 3 rear end, the ladder groove has been seted up to the preceding terminal surface of thermal-insulated protection casing 2, prevent that convection current cover 1 forms into location structure with the ladder groove joint, prevent contacting with heat conductor 4 behind thermal-insulated protection casing 2 is passed to the rear end of convection current cover 1. As shown in fig. 1, the convection preventing cover 1 includes by preceding ring body, well ring body and the back ring body that sets gradually backward, preceding ring body, the internal diameter of well ring body and back ring body equals and the external diameter reduces in proper order, the rear end face of preceding ring body and the preceding terminal surface contact of shell 3 and thermal-insulated protection casing 2, the outer wall of well ring body and back ring body all contacts with the inner wall of thermal-insulated protection casing 2, the rear end and the contact of heat conductor 4 of back ring body, this kind of structure of convection preventing cover 1 can prevent to produce the influence to the temperature of radiant output hole department because of the air convection, further improve calibration accuracy. The heat insulation shield 2 can protect the heat conductor 4 and reduce heat loss.

As right the utility model discloses a further improvement, still be provided with temperature control assembly in shell 3, temperature control assembly is including setting up the temperature sensor 7 in heat conductor 4 rear end face center department, and set up main control board 14 between heater 10 and rear panel 16, temperature sensor 7 is PT1000 temperature sensor, control chip on the main control board 14 is stm32, main control board 14 is with the help of main control fixed column 15 and rear panel fixed connection, temperature sensor 7's output is connected with main control board 14's input, main control board 14's output is connected with heater 10's controlled end. When the blackbody radiation source works, the temperature sensor 7 can monitor the temperature in the shell 3 in real time, when the temperature in the shell 3 is lower than a set temperature, the temperature sensor 7 outputs a signal to the main control board 14, the main control board 14 outputs a signal to enable the heater 10 to work, when the temperature in the shell 3 reaches the set temperature, the temperature sensor 7 outputs a signal to the main control board 14, the main control board 14 outputs a signal to enable the heater 10 to stop working, the temperature change in the shell 3 can be reduced, and the calibration precision is further improved.

As a further improvement to the present invention, a stirring fan 11 is further disposed on one side of the heater 10 in the housing 3, and the controlled end of the stirring fan 11 is connected to the output end of the main control board 14. The stirring fan 11 makes the air in the casing 3 in a flowing state, and avoids the high temperature concentration phenomenon of the air around the heater 10, so that the temperature in the casing 3 is more uniform.

As right the utility model discloses a further improvement has rather than coaxial setting and opening towards the tubbiness heat preservation 6 in the place ahead in shell 3, and heater 10 and stirring fan 11 all are located heat preservation 6 inside, and main control board 14 is located heat preservation 6 rear, and the rear end face of thermal-insulated protection casing 2 is sealed with the preceding terminal surface contact of heat preservation 6. The heat preservation layer 6 is clamped between the heat insulation protective cover 2 and the main control board 14, so that the loss of heat in the shell 3 can be reduced, meanwhile, the influence of the external environment on the temperature in the shell 3 can be reduced, and the calibration precision is further improved.

As right the utility model discloses a further improvement has the inner chamber apron 13 rather than the coaxial setting and the interior cavity casing 5 of tube-shape in heat preservation 6, the front end of interior cavity casing 5 and the contact of thermal-insulated protection casing 2, the rear end and the contact of inner chamber apron 13 of interior cavity casing 5, inner chamber apron 13 is with the help of apron fixed column 9 and heat conductor 4 fixed connection, stirring fan 11 fixes in inner chamber apron 13 the place ahead with the help of fan fixed column 12, heater 10 also fixes in inner chamber apron 13 the place ahead. The setting of inner chamber casing 5 and inner chamber apron 13 can avoid heat preservation 6 direct and heat contact, under the prerequisite of guaranteeing the heat preservation effect, can prolong the life of heat preservation 6. The setting of inner chamber apron 13 can also be under the condition of not destroying heat preservation 6, realizes heat conductor 4 and stirring fan 11's installation, and is more convenient. As shown in fig. 5, two heaters 10 are symmetrically disposed on the front end surface of the cavity cover 13, and the stirrer fan 11 is located between the two heaters 10.

The utility model discloses when specifically using, center department at 4 rear end faces of heat conductor is provided with the screw hole, and the screw hole is the blind hole, and temperature sensor 7 and screw hole threaded connection, simple structure, firm in connection are reliable, and easy dismounting is swift, labour saving and time saving. And the distance between the temperature sensor 7 and the front end face of the heat conductor 4 is smaller, the measured temperature is closer to the temperature of the front end face of the heat conductor 4, and the calibration result is more accurate. The external diameter of shell is 114mm, and the shell bottom is provided with the support, and the bottom of support is 130mm to the interval L1 at shell top, and the total length L2 of shell is 140mm, and is small, portable. The support is provided with a connecting hole which is vertically arranged and provided with an internal thread, so that the support is conveniently connected with other equipment.

As shown in fig. 2, four coaxially arranged heat conducting protrusion sets are arranged on the rear end face of the heat conductor 4, the number of the heat conducting protrusions 4-1 in the same heat conducting protrusion set is sequentially increased from inside to outside, all the heat conducting protrusions 4-1 of the innermost heat conducting protrusion set are connected into an integral structure, a threaded hole for connecting with the temperature sensor 7 is formed in the center of the integral structure, and the connection is firm and reliable.

The utility model discloses the bottom surface in well heat conduction chamber, the rear end face of heat conduction arch 4-1 and the side of heat conduction arch 4-1 all can contact with the heat, can greatly increased heat conductor 4's heat conduction area in finite space, improve endothermic heat conduction speed for the heat can in time be transmitted to the radiant output hole department of preventing convection current cover 1, can improve the calibration precision.

Claims

1. The utility model provides a blackbody radiation source, includes the casing, still includes heater (10) and heat conductor (4) of fixing in the casing, and heater (10) are located heat conductor (4) rear, its characterized in that: the rear end face of the heat conductor (4) is provided with heat conducting bulges (4-1), and the cavity between every two adjacent heat conducting bulges (4-1) is a heat conducting cavity.

2. A blackbody radiator as claimed in claim 1 wherein: the heat conductor (4) is made of red copper.

3. A blackbody radiator as claimed in claim 1 wherein: heat conductor (4) are disc type structure, have two at least heat conduction protruding groups rather than coaxial setting on heat conductor (4), and the circumferencial direction align to grid is followed heat conductor (4) in all heat conduction protruding (4-1) of same heat conduction protruding group, and the height of heat conduction protruding (4-1) is D, and the height of heat conductor (4) is D, D: d is (2-4): 1, the ratio of the end surface area of all the heat conducting bulges (4-1) to the end surface area of the heat conductor (4) is (2-5): 10.

4. a blackbody radiator as claimed in claim 1 wherein: the end surface of the heat conduction bulge (4-1) facing the heater (10) is provided with a heat storage and heat transfer column (8).

5. A blackbody radiator as claimed in claim 4 wherein: screw holes are arranged on the end surfaces of the heat conduction bulges (4-1), and the heat storage and heat transfer column (8) is in threaded connection with the screw holes on the heat conduction bulges (4-1).

6. A blackbody radiator as claimed in claim 1 wherein: the casing includes shell (3) of tube-shape, set up thermal-insulated protection casing (2) of front end in shell (3) and set up and locate to offer radiation output hole at shell (3) front end and center and prevent to flow cover (1), still including setting up rear panel (16) at shell (3) rear end, the ladder groove has been seted up to the preceding terminal surface of thermal-insulated protection casing (2), it forms location structure to prevent to flow cover (1) and ladder groove joint, the rear end of preventing to flow cover (1) passes behind thermal-insulated protection casing (2) and contacts with heat conductor (4).

7. A blackbody radiator as claimed in claim 6 wherein: still be provided with the temperature control assembly in shell (3), the temperature control assembly is including setting up temperature sensor (7) in heat conductor (4) rear end face center department to and main control board (14) of setting between heater (10) and rear panel (16), main control board (14) are with help of main control fixed column (15) and rear panel fixed connection, the output of temperature sensor (7) is connected with the input of main control board (14), the output of main control board (14) is connected with the controlled end of heater (10).

8. A blackbody radiator as claimed in claim 7 wherein: and a stirring fan (11) is also arranged on one side of the heater (10) in the shell (3), and the controlled end of the stirring fan (11) is connected with the output end of the main control board (14).

9. A blackbody radiator as claimed in claim 8 wherein: have rather than coaxial setting and opening towards the tubbiness heat preservation (6) in the place ahead in shell (3), heater (10) and stirring fan (11) all are located heat preservation (6) inside, and main control board (14) are located heat preservation (6) rear, and the rear end face of thermal-insulated protection casing (2) is sealed with the preceding terminal surface contact of heat preservation (6).

10. A blackbody radiator as claimed in claim 9 wherein: have inner chamber apron (13) rather than coaxial setting and the inner chamber casing (5) of tube-shape in heat preservation (6), the front end and the thermal-insulated protection casing (2) contact of inner chamber casing (5), the rear end and the inner chamber apron (13) contact of inner chamber casing (5), inner chamber apron (13) are with the help of apron fixed column (9) and heat conductor (4) fixed connection, agitator fan (11) are fixed in inner chamber apron (13) the place ahead with the help of fan fixed column (12), heater (10) are also fixed in inner chamber apron (13) the place ahead.