Temperature sensor on-line calibration device

Abstract

The utility model provides a temperature sensor on-line calibration device which comprises a water storage tank and a to-be-measured temperature sensor, the to-be-measured temperature sensor is inserted in the left side of the upper end face of the water storage tank, a calibration assembly is arranged on the upper side in the water storage tank, and a positioning assembly is arranged on the left side of the upper end face of the water storage tank. The temperature controller controls the electric heating pipe to work according to the required temperature value to heat purified water, so that the standard temperature sensor and the temperature sensor to be measured can display the water temperature in the water storage tank in real time, and at the moment, a worker only needs to compare whether the temperature values displayed by the temperature sensor to be measured and the standard temperature sensor are consistent or not; an external threaded rod is rotated reversely to drive a supporting plate to move towards the right side, then a fixing screw rod is rotated forwards to descend, and the descending fixing screw rod can press and fix the temperature sensor to be measured. And the to-be-measured temperature sensor is prevented from shaking or displacing in the calibration process.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature sensor calibration, in particular to an online calibration device for a temperature sensor. Background Art

[0002] Geological disasters are phenomena or processes that endanger human life and property, life and economic activities, or destroy the resources and environment on which human beings depend for survival and development. Every year, a large number of single or chain disasters of landslides and landslides occur frequently, posing a great threat to human life and property safety. Therefore, the establishment of an intelligent monitoring network for geological disasters is an inevitable measure and effective means to prevent the damage caused by geological disasters. In the process of establishing an intelligent monitoring network for geological disasters, corresponding temperature sensors are needed to monitor the ambient temperature in real time. During the use of temperature sensors, as components and equipment age, the accuracy of temperature sensors will decrease, so the accuracy of temperature sensors needs to be calibrated regularly through temperature sensor calibration devices.

[0003] Publication number "CN220670766U" provides a temperature sensor calibration device, which uses a rotatable flap to install a standard temperature sensor and a temperature sensor to be tested. When the installation surface is facing upward, the installation can be carried out, which is convenient. When the installation surface is facing downward and the second square slot is closed, the detection can be carried out.

[0004] However, the above technical solutions and the prior art have the following defects:

[0005] Since the calibration device uses heated air to calibrate the temperature sensor, this heating method is prone to uneven and dispersed heat during actual operation, resulting in different temperatures measured by the standard temperature sensor and the temperature sensor to be measured, thereby affecting the calibration accuracy of the temperature sensor to be measured. In addition, the clamping and fixing structure in the calibration device uses the extrusion force of a spring for clamping and fixing, and the spring is elastic during use, resulting in the two clamping plates being unable to firmly clamp and fix the temperature sensor to be measured and the standard temperature sensor. Therefore, the temperature sensor to be measured and the standard temperature sensor are prone to shaking during use, and the stability of use is poor. Utility Model Content

[0006] The purpose of the utility model is to provide an online calibration device for a temperature sensor to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A temperature sensor online calibration device comprises a water tank, a water replenishing seat and a temperature sensor to be measured, wherein the water replenishing seat is arranged on the right side of the upper end surface of the water tank, the temperature sensor to be measured is inserted on the left side of the upper end surface of the water tank, a calibration component is arranged on the upper side of the interior of the water tank, and the calibration component is used to calibrate the temperature sensor to be measured, and a positioning component is arranged on the left side of the upper end surface of the water tank, and the positioning component is used to position the temperature sensor to be measured during the calibration process.

[0009] Preferably, the calibration component includes a temperature controller, a power supply battery, a standard temperature sensor and an electric heating tube. The power supply battery is installed on the upper side of the upper end surface of the water tank, the standard temperature sensor is installed in the middle position of the upper end surface of the water tank, the electric heating tube is installed on the lower side of the inside of the water tank, and the temperature controller is installed on the upper side of the front end surface of the water tank.

[0010] Preferably, the positioning assembly includes a support plate, a limit groove, an externally threaded rod and a fixing screw. A limit groove is opened on the left side of the upper end surface of the water tank, an externally threaded rod is arranged inside the limit groove, a support plate is installed on the right side of the annular side surface of the externally threaded rod, and a fixing screw is installed on the upper side of the support plate.

[0011] Preferably, a first turntable is provided at the left end of the externally threaded rod, a second turntable is provided at the upper end surface of the fixed screw rod, the limiting groove matches the support plate, and the support plate is L-shaped.

[0012] Preferably, a follower ring is provided on the left side of the annular side surface of the external threaded rod, and an annular baffle is installed on the upper side of the left end surface of the water tank.

[0013] Preferably, a first sealing ring is embedded in the middle of the upper end surface of the water tank, a second sealing ring is embedded on the left side of the upper end surface of the water tank, and the second sealing ring matches the temperature sensor to be measured, and a storage box is fixedly connected to the left end surface of the water tank, and a sealing plug is placed inside the storage box.

[0014] Preferably, movable casters with foot brakes are symmetrically installed on the left and right sides of the bottom of the water tank, a drain valve is installed on the lower side of the right end surface of the water tank, a sealing cover is installed on the upper end surface of the water replenishment seat, and a push-pull handle is fixedly connected to the upper side of the left end surface of the water tank.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. When calibrating the temperature sensor to be tested, the temperature controller controls the electric heating tube to heat the clean water according to the required temperature value, so that the standard temperature sensor and the temperature sensor to be tested can display the water temperature inside the water tank in real time. At this time, the staff only needs to compare whether the temperature values ​​displayed by the temperature sensor to be tested and the standard temperature sensor are consistent, and then they can calibrate the temperature sensor to be tested online. And because both the temperature sensor to be tested and the standard temperature sensor are in the clean water inside the water tank, there will be no uneven and dispersed heat, thereby ensuring the calibration accuracy of the calibration component;

[0017] 2. Reverse the external threaded rod to drive the support plate to move to the right, and then rotate the fixed screw forward to make it descend. The descending fixed screw can press and fix the temperature sensor to be measured to avoid shaking or displacement of the temperature sensor to be measured during the calibration process, thereby ensuring the stability of the temperature sensor to be measured during the calibration process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 This is a structural diagram of the utility model when it is not in use;

[0020] Figure 3 It is a front cross-sectional view of the calibration component and the positioning component in the utility model;

[0021] Figure 4 It is a structural diagram of the positioning component in the utility model;

[0022] Figure 5 for Figure 3 A is an enlarged view of the middle image.

[0023] In the figure: 1. water storage tank; 11. movable castors with foot brakes; 12. storage box; 13. push-pull handle; 14. drain valve; 2. water filling seat; 21. sealing cover; 3. calibration component; 31. temperature controller; 32. power supply battery; 33. standard temperature sensor; 34. sealing plug; 35. electric heating tube; 36. first sealing ring; 37. second sealing ring; 4. positioning component; 41. support plate; 42. limit groove; 43. first turntable; 44. external threaded rod; 441. follower ring; 442. annular baffle; 45. fixing screw; 46. second turntable; 5. temperature sensor to be measured. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-5 , the utility model provides a technical solution:

[0026] Embodiment 1:

[0027] A temperature sensor online calibration device comprises a water tank 1, a water replenishing seat 2 and a temperature sensor 5 to be measured. The water replenishing seat 2 is arranged on the right side of the upper end surface of the water tank 1, and the water replenishing seat 2 is convenient for the staff to introduce an appropriate amount of clean water into the water tank 1. The temperature sensor 5 to be measured is inserted on the left side of the upper end surface of the water tank 1. The temperature sensor 5 to be measured has the same specifications as the standard temperature sensor 33. The movable casters 11 with foot brakes are symmetrically installed on the left and right sides of the bottom of the water tank 1. The movable casters 11 with foot brakes are convenient for the staff to push the water tank 1. A drain valve is installed on the lower side of the right end surface of the water tank 1. 14. The drain valve 14 is convenient for the staff to drain the clean water in the water tank 1 for replacement. A sealing cover 21 is installed on the upper end surface of the water replenishment seat 2. The sealing cover 21 is connected to the water replenishment seat 2 by a threaded connection. The sealing cover 21 can seal the upper end surface of the water replenishment seat 2 to prevent the heat in the water tank 1 from quickly losing to the outside through the water replenishment seat 2. A sealing sheet is installed inside the sealing cover 21. The sealing sheet makes the sealing cover 21 more sealed. A push-pull handle 13 is fixedly connected to the upper side of the left end surface of the water tank 1. The push-pull handle 13 is convenient for the staff to push and pull the water tank 1 by hand.

[0028] A calibration component 3 is provided on the upper side of the water tank 1, and the calibration component 3 is used to calibrate the temperature sensor 5 to be measured. A positioning component 4 is provided on the left side of the upper end surface of the water tank 1, and the positioning component 4 is used to position the temperature sensor 5 to be measured during the calibration process.

[0029] The calibration component 3 includes a temperature controller 31, a power supply battery 32, a standard temperature sensor 33 and an electric heating tube 35. The power supply battery 32 is installed on the front side of the upper end surface of the water tank 1. The power supply battery 32 is a rechargeable structure. The power supply battery 32 can power the standard temperature sensor 33 and the temperature sensor 5 to be tested. A standard temperature sensor 33 is installed in the middle position of the upper end surface of the water tank 1. The model of the standard temperature sensor 33 is TK55A digital display temperature sensor. The standard temperature sensor 33 is convenient for comparing and calibrating the temperature sensor 5 to be tested. Since the internal detailed structure and working principle of the standard temperature sensor 33 and the temperature sensor 5 to be tested are relatively mature technologies in the prior art, they will not be described in detail here. An electric heating tube 35 is installed on the lower side of the water tank 1. The electric heating tube 35 is connected to the temperature controller 31 through a wire. The electric heating tube 35 can heat the clean water inside the water tank 1 when working.

[0030] A sealing ring is installed between the electric heating tube 35 and the water tank 1, and the sealing ring makes the sealing between the electric heating tube 35 and the water tank 1 better. A temperature controller 31 is installed on the upper side of the front end surface of the water tank 1. The temperature controller 31 is convenient for the staff to control the temperature value set for the installation of the electric heating tube 35. Since the internal detailed structure and working principle of the temperature controller 31 are relatively mature technologies in the prior art, they will not be described in detail here. A first sealing ring 36 is embedded in the middle position of the upper end surface of the water tank 1, and the first sealing ring 36 matches the standard temperature sensor 33. The first sealing ring 36 makes the sealing between the standard temperature sensor 33 and the water tank 1 better, avoiding the rapid loss of heat from the inside of the water tank 1 to the outside. A second sealing ring is embedded on the left side of the upper end surface of the water tank 1. A sealing ring 37 is provided, and the second sealing ring 37 matches the temperature sensor 5 to be measured. The second sealing ring 37 makes the sealing between the temperature sensor 5 to be measured and the water tank 1 better. A storage box 12 is fixedly connected to the left end face of the water tank 1. The storage box 12 is convenient for the staff to temporarily store the sealing tape. A sealing plug 34 is placed inside the storage box 12. The sealing plug 34 is made of silicone rubber. An insertion through hole is opened on the left side of the upper end face of the water tank 1, and the insertion through hole is matched with the temperature sensor 5 to be measured and the sealing plug 34 respectively. The sealing plug 34 made of silicone rubber is convenient for the staff to seal the insertion through hole, so as to avoid the insertion through hole not being sealed in time after the temperature sensor 5 to be measured is disassembled or not installed, resulting in the internal heat of the water tank 1 quickly losing to the outside through the insertion through hole.

[0031] Embodiment 2:

[0032] On the basis of the first embodiment, in this embodiment, the externally threaded rod 44 is reversed to drive the support plate 41 to move to the right, and then the fixed screw 45 is rotated forward to make it descend, so that the descending fixed screw 45 can press and fix the temperature sensor 5 to be measured, thereby avoiding shaking or displacement of the temperature sensor 5 to be measured during the calibration process, thereby ensuring the stability of the temperature sensor 5 to be measured during the calibration process.

[0033] The positioning assembly 4 includes a support plate 41, a limiting groove 42, an externally threaded rod 44 and a fixing screw 45. A limiting groove 42 is provided on the left side of the upper end surface of the water tank 1, and the limiting groove 42 matches the support plate 41. The limiting groove 42 can limit the support plate 41 to prevent the support plate 41 from shaking or offsetting during use. An externally threaded rod 44 is provided inside the limiting groove 42, and a first internally threaded through hole is provided on the lower side of the support plate 41, and the first internally threaded through hole is meshed with the externally threaded rod 44. The first internally threaded through hole facilitates the rotating externally threaded rod 44 to drive the support plate 41 to move left and right.

[0034] A support plate 41 is installed on the right side of the annular side of the external threaded rod 44. The support plate 41 is L-shaped. The L-shaped support plate 41 can support the fixing screw 45. The fixing screw 45 is installed on the upper side of the support plate 41. A second internal threaded through hole is opened on the right side of the upper end surface of the support plate 41, and the second internal threaded through hole is meshed with the fixing screw 45. The second internal threaded through hole facilitates the rotation of the fixing screw 45, and has the ability to move up and down. A first turntable 43 is arranged on the left end of the external threaded rod 44. The first turntable 43 and the external threaded rod 44 are an integrated structure. The first turntable 43 It is convenient for the staff to rotate the external threaded rod 44 by hand, and a second turntable 46 is arranged on the upper end surface of the fixed screw 45. The second turntable 46 and the fixed screw 45 are an integrated structure. The second turntable 46 is convenient for the staff to rotate the fixed screw 45 by hand. A follower ring 441 is arranged on the left side of the annular side surface of the external threaded rod 44. The follower ring 441 is connected to the external threaded rod 44 by welding, and an annular baffle 442 is installed on the upper side of the left end surface of the water tank 1. The follower ring 441 and the annular baffle 442 prevent the external threaded rod 44 from being displaced or shaking during use.

[0035] Working principle: The staff first moves the device to the desired position, then connects the temperature controller 31 to the external fixed power supply through a wire, and electrically connects the standard temperature sensor 33 to the power supply battery 32 through a wire, then opens the sealing cover 21 and pours a proper amount of clean water into the water storage tank 1 through the water replenishing seat 2. After pouring, the sealing cover 21 is fixed to the upper end surface of the water replenishing seat 2, then the sealing plug 34 is unplugged and the temperature sensor 5 to be measured is vertically inserted on the left side of the upper end surface of the water storage tank 1, and the temperature sensor 5 to be measured is connected to the water storage tank 1 through the wire. After the insertion is completed, the externally threaded rod 44 is reversed by the first turntable 43, so that the reversed externally threaded rod 44 drives the support plate 41 to move to the right. When the support plate 41 is moved to the right, the fixing screw 45 is rotated forward by the second turntable 46 to make it descend, so that the descending fixing screw 45 can press and fix the temperature sensor 5 to be measured, so as to avoid shaking or displacement of the temperature sensor 5 to be measured during the calibration process. After the fixation is completed, the electric heating tube 35 can be controlled by the temperature controller 31 to press The purified water is heated according to the required temperature value. During this process, the standard temperature sensor 33 will display the water temperature inside the water tank 1 in real time, and the temperature sensor 5 to be tested will also display the water temperature inside the water tank 1 at the same time. At this time, the staff only needs to compare whether the temperature values ​​displayed by the temperature sensor 5 to be tested are consistent with those displayed by the standard temperature sensor 33. When the temperature value displayed by the temperature sensor 5 to be tested is inconsistent with the temperature value displayed by the standard temperature sensor 33, it indicates that the accuracy of the temperature sensor 5 to be tested has been reduced and is inaccurate. When the temperature value displayed by the temperature sensor 5 to be tested is consistent with the temperature value displayed by the standard temperature sensor 33, it indicates that the accuracy of the temperature sensor 5 to be tested has not been reduced, so that the temperature sensor 5 to be tested is calibrated online; after the calibration is completed, the staff first turns off the temperature controller 31, and then reverses the fixing screw 45 through the second turntable 46 to move it upward, and then rotates the external threaded rod 44 forward through the first turntable 43, so that the forward rotating external thread drives the support plate 41 to move to the left to the initial position, and the temperature sensor 5 to be tested can be pulled up, disassembled and removed.

[0036] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A temperature sensor online calibration device, comprising a water storage tank (1), a water supply seat (2) and a temperature sensor to be measured (5), characterized in that: A water replenishing seat (2) is arranged on the right side of the upper end surface of the water storage tank (1); a temperature sensor (5) to be measured is inserted on the left side of the upper end surface of the water storage tank (1); a calibration component (3) is arranged on the upper side of the interior of the water storage tank (1), and the calibration component (3) is used to calibrate the temperature sensor (5) to be measured; a positioning component (4) is arranged on the left side of the upper end surface of the water storage tank (1), and the positioning component (4) is used to position the temperature sensor (5) to be measured during the calibration process.

2. The temperature sensor online calibration device according to claim 1, characterized in that: The calibration component (3) comprises a temperature controller (31), a power supply battery (32), a standard temperature sensor (33) and an electric heating tube (35); the power supply battery (32) is installed on the front side of the upper end surface of the water storage tank (1); the standard temperature sensor (33) is installed at the middle position of the upper end surface of the water storage tank (1); the electric heating tube (35) is installed on the lower side of the interior of the water storage tank (1); and the temperature controller (31) is installed on the upper side of the front end surface of the water storage tank (1).

3. The temperature sensor online calibration device according to claim 1, characterized in that: The positioning assembly (4) comprises a support plate (41), a limiting groove (42), an externally threaded rod (44) and a fixing screw (45); the limiting groove (42) is provided on the left side of the upper end surface of the water storage tank (1); the externally threaded rod (44) is arranged inside the limiting groove (42); the support plate (41) is installed on the right side of the annular side surface of the externally threaded rod (44); and the fixing screw (45) is installed on the upper side of the support plate (41).

4. The temperature sensor online calibration device according to claim 3, characterized in that: A first rotating disk (43) is arranged at the left end of the external threaded rod (44), a second rotating disk (46) is arranged on the upper end surface of the fixed screw rod (45), the limiting groove (42) matches the support plate (41), and the support plate (41) is L-shaped.

5. The temperature sensor online calibration device according to claim 3, characterized in that: A follower ring (441) is provided on the left side of the annular side surface of the external threaded rod (44), and an annular baffle (442) is installed on the upper side of the left end surface of the water storage tank (1).

6. The temperature sensor online calibration device according to claim 1, characterized in that: A first sealing ring (36) is embedded in the middle of the upper end surface of the water storage tank (1), a second sealing ring (37) is embedded on the left side of the upper end surface of the water storage tank (1), and the second sealing ring (37) matches the temperature sensor (5) to be measured, and a storage box (12) is fixedly connected to the left end surface of the water storage tank (1), and a sealing plug (34) is placed inside the storage box (12).

7. The temperature sensor online calibration device according to claim 1, characterized in that: The bottom of the water storage tank (1) is symmetrically provided with movable castors (11) with foot brakes on both sides, a drain valve (14) is installed on the lower side of the right end surface of the water storage tank (1), a sealing cover (21) is installed on the upper end surface of the water replenishment seat (2), and a push-pull handle (13) is fixedly connected to the upper side of the left end surface of the water storage tank (1).

Images