End face thermal resistor

Abstract

The application discloses an end face thermal resistance which comprises a main box, a temperature measuring plate and a controller, a flat plate is installed below the main box, a vertical rod is connected below the middle position of the flat plate, a micro air pump is fixed below the left and right ends of the flat plate, an air cylinder is connected below the micro air pump, a movable rod is connected below the air cylinder, a base is installed at the lower end of the movable rod, the temperature measuring plate is connected to the lower end of the vertical rod, temperature measuring probes are evenly arranged in the temperature measuring plate, the controller is installed in the main box, a piston is arranged in the air cylinder, an air channel is formed at the connecting position of the air cylinder and the micro air pump, a distance measuring sensor is installed below the left and right ends of the temperature measuring plate, and a magnetic block is arranged on the inner side of the distance measuring sensor. The end face thermal resistance can adjust the shape of the temperature measuring plate, so that the temperature measuring plate can be suitable for temperature measurement of objects with different sizes and arc shapes, and the practicability is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature measuring devices, in particular to an end-face thermal resistor. Background Art

[0002] Thermal resistors (RTRs) are the most commonly used temperature detectors in the medium and low temperature range. They measure temperature based on the property that the resistance of a metal conductor increases with temperature. Their key features are high measurement accuracy and stable performance. Platinum RTDs offer the highest measurement accuracy and are widely used in industrial temperature measurement, serving as standard reference instruments.

[0003] However, the appearance structure of the thermal resistors on the market is mostly long cylindrical, which is not convenient for measuring the temperature of the surface of objects with arc structures during use. The thermal resistor only has one point in contact with the object to be measured, which makes its temperature measurement reliability poor, resulting in slow temperature measurement response and inaccurate measurement results. There is a problem that it cannot meet the usage requirements of users who require more precise measurement results. For this reason, we propose an end-face thermal resistor. Summary of the Invention

[0004] The object of the present invention is to provide an end-face thermal resistor to solve the problem raised in the above background technology that the thermal resistors currently on the market are mostly long columnar in shape, which makes it inconvenient to measure the temperature of the surface of an object with an arc structure during use. The thermal resistor only has one point in contact with the object to be measured, which makes its temperature measurement reliability poor, resulting in a slow temperature measurement response and inaccurate measurement results, and there is a problem that it cannot meet the usage requirements of users who require more precise measurement results.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an end-face thermal resistor, comprising a main body box, a temperature measuring plate and a controller, a flat plate installed below the main body box, and a vertical pole connected below the middle position of the flat plate, micro air pumps are fixed below the left and right ends of the flat plate, and a cylinder is connected below the micro air pump, a movable rod is connected below the cylinder, and a base is installed at the lower end of the movable rod, the temperature measuring plate is connected to the lower end of the vertical pole, and temperature measuring probes are evenly arranged inside the temperature measuring plate, the controller is installed inside the main body box, a piston is placed inside the cylinder, and an air channel is opened at the connection between the cylinder and the micro air pump, ranging sensors are installed below the left and right ends of the temperature measuring plate, and a magnetic block is arranged on the inner side of the ranging sensor.

[0006] Preferably, the internal structures of the vertical pole and the temperature measuring plate are both hollow structures, and the vertical pole and the temperature measuring plate are connected.

[0007] Preferably, the micro air pump forms a communication structure with the cylinder through an air channel, and the cylinder forms a telescopic structure with the piston and the movable rod.

[0008] Preferably, a fixed rod is fixed at the middle position of the base, and the movable rod forms a rotating structure through the fixed rod and the base.

[0009] Preferably, the structure of the temperature measuring plate is an elastic arc structure, and the lower surface of the temperature measuring plate is connected to an insulating pad, and the material of the insulating pad is rubber.

[0010] Preferably, the distance measuring sensor and the temperature measuring probe are both electrically connected to the input end of the controller through a wire, and the output end of the controller is electrically connected to the micro air pump through a wire.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The end-face thermal resistor is provided with an air channel connecting the micro air pump and the cylinder, so that the micro air pump can transmit gas to the inside of the cylinder through the air channel, so that the cylinder and the movable rod can be driven to move telescopically by the change of the air pressure inside the cylinder. The shape of the temperature measuring plate can be adjusted, so that the temperature measuring plate can be applied to the temperature measurement of objects of different sizes and arcs, which is more practical.

[0013] 2. The bottom end of the movable rod is set to be sleeved on the outside of the fixed rod and can rotate around the fixed rod, so as to facilitate the connection between the movable rod and the temperature measuring plate when it is extended and retracted. The arc-shaped temperature measuring plate is consistent with the structure of the arc-shaped object, which greatly expands the application range of the entire device. In addition, the equidistantly distributed temperature measuring probes can collect multiple sets of temperature data at a time, so as to effectively improve the accuracy of the temperature measurement results of the entire device;

[0014] 3. The distance measuring sensor can measure the distance between the temperature measuring plate and the object to be measured, and cooperate with the controller to intelligently drive the micro air pump to drive the movable rod to adjust the deformation of the temperature measuring plate, which is beneficial to improve the applicability of the entire device to the object to be measured. At the same time, the set magnetic block has a certain adsorption effect on the object to be measured, which can improve the effect of the temperature measuring plate fitting the object to be measured, thereby improving the stability of the temperature measurement effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 Schematic diagram of the internal cross-sectional structure of the present invention;

[0017] Figure 3 For the present invention Figure 2 Schematic diagram of the locally enlarged structure at point A in the middle.

[0018] In the figure: 1. Main box; 2. Flat plate; 3. Vertical pole; 4. Micro air pump; 5. Cylinder; 6. Movable rod; 7. Base; 8. Temperature measuring plate; 9. Temperature measuring probe; 10. Controller; 11. Piston; 12. Airway; 13. Distance measuring sensor; 14. Magnetic block; 15. Insulation pad; 16. Fixed rod. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-3 The present invention provides a technical solution: an end-face thermal resistor, a main body box 1, a flat plate 2, a vertical rod 3, a micro air pump 4, a cylinder 5, a movable rod 6, a base 7, a temperature measuring plate 8, a temperature measuring probe 9, a controller 10, a piston 11, an airway 12, a distance sensor 13, a magnetic block 14, an insulating pad 15 and a fixed rod 16. The flat plate 2 is installed below the main body box 1, and the vertical rod 3 is connected to the middle position of the flat plate 2. Micro air pumps 4 are fixed below the left and right ends of the flat plate 2, and the cylinder 5 is connected below the micro air pump 4. , a movable rod 6 is connected to the bottom of the cylinder 5, and a base 7 is installed at the lower end of the movable rod 6, a temperature measuring plate 8 is connected to the lower end of the vertical rod 3, and temperature measuring probes 9 are evenly arranged inside the temperature measuring plate 8. The internal structures of the vertical rod 3 and the temperature measuring plate 8 are hollow structures, and the vertical rod 3 and the temperature measuring plate 8 are connected. The vertical rod 3 and the temperature measuring plate 8 are hollow, and the vertical rod 3 and the temperature measuring plate 8 are also connected, which facilitates the routing of the internal electrical components of the entire device during manufacturing and avoids the problem of directly exposing the wires and affecting their service life;

[0021] The controller 10 is installed inside the main box 1, a piston 11 is placed inside the cylinder 5, and an air channel 12 is opened at the connection between the cylinder 5 and the micro air pump 4. The micro air pump 4 forms a communication structure with the cylinder 5 through the air channel 12, and the cylinder 5 forms a telescopic structure with the movable rod 6 through the piston 11. The air channel 12 is provided to connect the micro air pump 4 and the cylinder 5, so that the micro air pump 4 can transmit gas to the inside of the cylinder 5 through the air channel 12, so as to drive the cylinder 5 and the movable rod 6 to move telescopically through the change of the air pressure inside the cylinder 5. The whole device can adjust the shape of the temperature measuring plate 8, so that the temperature measuring plate 8 can be suitable for measuring the temperature of objects with arc shapes of different sizes, which is more practical.

[0022] Distance measuring sensors 13 are installed below the left and right ends of the temperature measuring plate 8, and a magnetic block 14 is provided on the inner side of the distance measuring sensor 13. The distance measuring sensor 13 and the temperature measuring probe 9 are electrically connected to the input end of the controller 10 through a wire, and the output end of the controller 10 is electrically connected to the micro air pump 4 through a wire. The distance measuring sensor 13 can measure the distance between the temperature measuring plate 8 and the object to be measured, and cooperate with the controller 10 to facilitate the intelligent driving of the micro air pump 4 to drive the movable rod 6 to adjust the deformation of the temperature measuring plate 8, which is beneficial to improve the applicability of the entire device to the object to be measured. At the same time, the magnetic block 14 has a certain adsorption effect on the object to be measured, which can improve the effect of the temperature measuring plate 8 fitting the object to be measured, and further improve the effect of the temperature measuring plate 8 fitting the object to be measured. In order to improve the stability of the temperature measurement effect, the structure of the temperature measuring plate 8 is an elastic arc structure, and the lower surface of the temperature measuring plate 8 is connected to an insulating pad 15, and the material of the insulating pad 15 is rubber. The arc-shaped temperature measuring plate 8 is consistent with the structure of the arc-shaped object, which greatly expands the application range of the entire device, and the equidistantly distributed temperature measuring probes 9 can collect multiple sets of temperature data at a time, so as to effectively improve the accuracy of the temperature measurement results of the entire device. A fixed rod 16 is fixed at the middle position of the base 7, and the movable rod 6 forms a rotating structure through the fixed rod 16 and the base 7. The bottom end of the movable rod 6 is set on the outside of the fixed rod 16 and can be rotated around the fixed rod 16 to facilitate the connection of the movable rod 6 with the temperature measuring plate 8 when it is extended or retracted.

[0023] Working principle: For this type of end-face thermal resistor, first, the temperature measuring plate 8 is brought into contact with the object to be measured. The wire of the temperature measuring probe 9 can be connected to the controller 10 inside the main box 1 through the vertical pole 3. After the entire device is connected to the external power supply, the distance sensor 13 of model HC-SR04 can detect the distance between the temperature measuring plate 8 and the surface of the object to be measured, and transmit the measured data to the controller 10 of model AT89S51. The controller 10 analyzes and processes the measured data, and then controls the micro air pump 4 under the flat plate 2 to start. The micro air pump 4 works by delivering gas to the inside of the cylinder 5 through the air channel 12. The gas inside the cylinder 5 increases and the pressure increases. , the pressure pushes the piston 11 to move downward, and the piston 11 drives the movable rod 6 to move downward. The movable rod 6 drives the two ends of the temperature measuring plate 8 to bend downward through the base 7 and the fixed rod 16. At the same time, the movable rod 6 and the fixed rod 16 rotate slightly until the insulating pad 15 is close to the surface of the object to be measured, and the magnetic block 14 attracts the object to be measured. At the same time, multiple PT100 temperature measuring probes 9 are in contact with the surface of the object to be measured to measure the temperature of the object to be measured. The temperature measuring probes 9 transmit the measured data to the controller 10 through the wire, and the controller 10 can transmit the data to other terminal devices through the external wire, thereby completing the temperature measurement, thus completing the use process of the entire end face thermal resistor.

[0024] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An end-face thermal resistor, comprising a main body box (1), a temperature measuring plate (8) and a controller (10), characterized in that: A flat plate (2) is installed below the main box (1), and a vertical pole (3) is connected below the middle position of the flat plate (2). Micro air pumps (4) are fixed below the left and right ends of the flat plate (2), and a cylinder (5) is connected below the micro air pump (4). A movable rod (6) is connected below the cylinder (5), and a base (7) is installed at the lower end of the movable rod (6). The temperature measuring plate (8) is connected to the lower end of the vertical pole (3), and temperature measuring probes (9) are evenly arranged inside the temperature measuring plate (8). The controller (10) is installed inside the main box (1). A piston (11) is arranged inside the cylinder (5), and an air channel (12) is opened at the connection between the cylinder (5) and the micro air pump (4). Distance measuring sensors (13) are installed below the left and right ends of the temperature measuring plate (8), and a magnetic block (14) is arranged on the inner side of the distance measuring sensor (13). The micro air pump (4) forms a communication structure with the cylinder (5) through the air channel (12), and the cylinder (5) forms a telescopic structure with the movable rod (6) through the piston (11); A fixed rod (16) is fixed at the middle position of the base (7), and the movable rod (6) forms a rotating structure through the fixed rod (16) and the base (7); The distance sensor (13) is used to detect the distance between the temperature measuring plate (8) and the object to be measured, and feed back to the controller (10). The controller (10) is used to drive the micro air pump (4) to adjust the air pressure in the cylinder (5), so that the movable rod (6) drives the temperature measuring plate (8) to deform to fit the surface of the object to be measured, and at the same time, the magnetic block (14) adsorbs the object to be measured.

2. The end surface thermal resistor according to claim 1, characterized in that: The internal structures of the vertical pole (3) and the temperature measuring plate (8) are both hollow structures, and the vertical pole (3) and the temperature measuring plate (8) are connected.

3. The end surface thermal resistor according to claim 1, characterized in that: The structure of the temperature measuring plate (8) is an elastic arc structure, and the lower surface of the temperature measuring plate (8) is connected to an insulating pad (15), and the material of the insulating pad (15) is rubber.

4. The end surface thermal resistor according to claim 1, characterized in that: The distance measuring sensor (13) and the temperature measuring probe (9) are both electrically connected to the input end of the controller (10) through a wire, and the output end of the controller (10) is electrically connected to the micro air pump (4) through a wire.

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