On-site checking device of ocean temperature measuring instrument
Through the air constant temperature box and constant temperature control system, the water three-phase point and gallium melting point are used as verification standards to quickly verify the ocean thermometer, solving the problem of calibration of ocean thermometers in complex marine environments, and achieving efficient and accurate data verification and cost savings.
Patent Information
- Application Number
- CN202422499433.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-16
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-10-16
AI Technical Summary
The prior art is difficult to efficiently calibrate marine thermometers in complex marine environments. Traditional methods are affected by ship sway and time consumption, and cannot meet the needs of fast-paced maritime surveys.
An air constant temperature box is designed with a constant temperature chamber and a constant temperature control system. It uses the water three-phase point and gallium melting point as verification standards to quickly verify the accuracy of the marine thermometer, including stainless steel and polytetrafluoroethylene crucibles, and fill fixed point substances with different phase change temperatures, so as to achieve verification within 30 seconds.
Quickly and accurately verify the data of the ocean thermometer at the ocean survey site, saving time and cost, suitable for large-scale fast-paced distribution, and improving the data accuracy of the ocean thermometer.
Smart Images
Figure CN223166246U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of metrological calibration of marine survey equipment, and particularly relates to an on-site verification device for a marine thermometer. Background Art
[0002] The seawater temperature is of great significance to hot issues such as marine climate models, ecological environment restoration, and marine pastures. How to judge the accuracy of the data measured by marine thermometers is a practical problem that technicians strive to solve. Most front-line workers in marine surveys use the comparison method to calibrate marine thermometers, that is, comparing the thermometer to be calibrated with a highly accurate standard temperature sensor. This method requires providing a stable temperature environment through a constant temperature water bath or conducting at least one profile measurement with the thermometer and the standard temperature sensor together.
[0003] However, the on-site environment of offshore operations is relatively complex. The constant temperature water bath will sway with the ship, resulting in an unstable temperature field; while the profile comparison measurement requires a certain amount of ship time and cannot meet the fast-paced offshore operations such as large-scale deployment of mooring buoys. Therefore, the traditional offshore comparison method is not applicable to survey equipment such as marine thermometers. Summary of the Utility Model
[0004] Aiming at the above problems existing in the existing calibration of marine thermometers by the comparison method, the purpose of the utility model is to provide an on-site verification device for a marine thermometer.
[0005] The purpose of the utility model is realized by the following technical solutions:
[0006] The utility model includes an air constant temperature box and two fixed points. A constant temperature chamber for placing the fixed points is arranged inside the outer shell of the air constant temperature box, and a thermostatic box cover that can be opened and closed is arranged on the outer shell of the air constant temperature box corresponding to the constant temperature chamber; a constant temperature control system is also arranged inside the air constant temperature box, and the constant temperature control system is located outside the constant temperature chamber and controls the temperature inside the constant temperature chamber; the fixed point includes a stainless steel upper cover, a stainless steel outer shell, and a polytetrafluoroethylene crucible. The polytetrafluoroethylene crucible is located inside the stainless steel outer shell, and a stainless steel upper cover that can be opened and closed is arranged on the stainless steel outer shell. Polytetrafluoroethylene thermometer wells for placing the marine thermometer to be inspected are arranged on both the stainless steel upper cover and the polytetrafluoroethylene crucible, and a fixed point substance is poured into the polytetrafluoroethylene crucible; fixed point substances with different phase change temperatures are poured into the polytetrafluoroethylene crucibles of the two fixed points, and they are successively placed in the constant temperature chamber for verification.
[0007] Wherein: a marine thermometer jack is arranged on the thermostatic box cover, and a heat insulation sealing ring is arranged in the jack. The marine thermometer to be inspected is inserted into the polytetrafluoroethylene thermometer well through the jack and fits tightly with the heat insulation sealing ring.
[0008] One side of the constant temperature box cover is hinged to the constant temperature chamber through a rotating shaft hinge for opening and closing the constant temperature chamber; heat preservation materials are arranged in the constant temperature chamber.
[0009] The constant temperature control system includes a control circuit, a temperature measuring resistor, a refrigeration device and a heating and temperature control device which are respectively connected to the control circuit. The constant temperature chamber is communicated with an air duct and is equipped with a temperature measuring resistor, and the refrigeration device and the heating and temperature control device are respectively communicated with the air duct.
[0010] There is one or more air ducts, and a fan connected to the control circuit is installed in each air duct; when there are multiple air ducts, the refrigeration device and the heating and temperature control device are communicated with each air duct.
[0011] The heating and temperature control device includes a heating coil for rapid heating and a thyristor heater for fine temperature control. The heating coil and the thyristor heater are respectively connected to the control circuit and are respectively connected to the air duct.
[0012] The refrigeration device is a compression refrigerator.
[0013] The constant temperature control system further includes a display touch screen, an indicator light connected to the control circuit and a switch for connecting to a power supply.
[0014] The advantages and positive effects of the present utility model are as follows:
[0015] The present utility model uses the triple point of water (0.01 °C) and the melting point of gallium (29.7646 °C) as verification standards to verify the data quality of ocean thermometers at the ocean survey site and judge the accuracy of their data; the ocean thermometers placed on the ocean surface are verified using the gallium fixed point, and the ocean thermometers placed at the bottom are verified using the triple point of water. The temperature values in these two usage environments are closer to the melting point of gallium and the triple point of water, strengthening the verification effect; it only takes about 30 seconds to verify each ocean thermometer, without occupying ship time, greatly saving time costs and providing support for large-area and fast-paced ocean instrument placement; the thermometers that meet the needs of scientists after verification can be directly used for on-site placement, and only the thermometers that do not meet the requirements are taken back to the shore-based for repair or calibration, saving relevant funds. Description of the Drawings
[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model;
[0017] Figure 2 It is a schematic diagram of the structure of the fixed point of the present utility model;
[0018] Wherein: 1 is the thermostatic chamber cover, 2 is the rotating shaft hinge, 3 is the fan, 4 is the air duct, 5 is the heating coil, 6 is the thyristor heater, 7 is the display touch screen, 8 is the indicator light, 9 is the switch, 10 is the control circuit, 11 is the compression refrigerator, 12 is the temperature measuring resistor, 13 is the fixed point, 14 is the thermostatic chamber, 15 is the jack, 16 is the ocean temperature measuring instrument, 17 is the stainless steel upper cover, 18 is the stainless steel outer shell, 19 is the polytetrafluoroethylene crucible, 20 is the fixed point substance, 21 is the polytetrafluoroethylene thermometer well. Specific embodiments
[0019] The present utility model will be further described in detail below with reference to the accompanying drawings.
[0020] As Figure 1 、 Figure 2 shown, the present utility model includes an air thermostatic chamber and two fixed points 13. Inside the outer shell of the air thermostatic chamber, there is a thermostatic chamber 14 for placing the fixed point 13. On the outer shell of the air thermostatic chamber corresponding to the thermostatic chamber 14, there is a thermostatic chamber cover 1 that can be opened and closed; inside the air thermostatic chamber, there is also a constant temperature control system. The constant temperature control system is located outside the thermostatic chamber 14 and controls the temperature inside the thermostatic chamber 14. The fixed point 13 includes a stainless steel upper cover 17, a stainless steel outer shell 18, and a polytetrafluoroethylene crucible 19. The polytetrafluoroethylene crucible 19 is located inside the stainless steel outer shell 18. There is a stainless steel upper cover 17 on the stainless steel outer shell 18 that can be opened and closed. The stainless steel outer shell 18 and the stainless steel upper cover 17 cover the outermost layer of the fixed point to protect the fixed point 13; both the stainless steel upper cover 17 and the polytetrafluoroethylene crucible 19 are provided with polytetrafluoroethylene thermometer wells 21 for placing the to-be-inspected ocean temperature measuring instrument 16. The polytetrafluoroethylene crucible 19 is filled with a fixed point substance 20; the polytetrafluoroethylene crucibles 19 of the two fixed points 13 are filled with fixed point substances 20 with different phase change temperatures and are successively placed in the thermostatic chamber 14 for verification.
[0021] One side of the thermostatic chamber cover 1 of this embodiment is hinged to the thermostatic chamber 14 through a rotating shaft hinge 2 for opening and closing the thermostatic chamber 14; the inside of the thermostatic chamber 14 is covered with a heat-insulating material, and the heat-insulating material can be sponge. The thermostatic chamber cover 1 of this embodiment is provided with an ocean temperature measuring instrument jack 15. There is a heat-insulating sealing ring in the jack 15. The to-be-inspected ocean temperature measuring instrument 16 is inserted into the polytetrafluoroethylene thermometer well 21 through the jack 15 and is in close fit with the heat-insulating sealing ring.
[0022] The fixed point substances 20 in the polytetrafluoroethylene crucibles 19 of the two fixed points 13 in this embodiment are respectively two phase change materials, water and gallium. The phase change temperatures of different materials are different, and the temperature inside the material is constant during phase change; the polytetrafluoroethylene crucible 19 has good chemical stability, and its ductility can avoid the container rupture caused by the sharp volume expansion of water and gallium during the solidification process; the polytetrafluoroethylene thermometer well 21 can reduce heat transfer and reduce the external influence.
[0023] The constant temperature control system of this embodiment includes a control circuit 10, a temperature measuring resistor 12, a refrigeration device, and a heating and temperature control device that are respectively connected to the control circuit 10. The control circuit 10 is a prior art. The constant temperature chamber 14 is communicated with an air duct 4 and is equipped with a temperature measuring resistor 12. The refrigeration device and the heating and temperature control device are respectively communicated with the air duct 4.
[0024] The air duct 4 is one or more, and a fan 3 connected to the control circuit 10 is installed in each air duct 4; when there are multiple air ducts 4, the refrigeration device and the heating and temperature control device are communicated with each air duct 4. In this embodiment, there are two air ducts 4, and a fan 3 is installed in each air duct 4.
[0025] The heating and temperature control device of this embodiment includes a heating coil 5 for rapid heating and a thyristor heater 6 for fine temperature control. The heating coil 5 and the thyristor heater 6 are respectively connected to the control circuit 10 and are connected to the two air ducts 4.
[0026] The refrigeration device of this embodiment is a compression refrigerator 11. The heating coil 5, the thyristor heater 6, and the compression refrigerator 11 are all prior arts.
[0027] The constant temperature control system of this embodiment further includes a display touch screen 7, an indicator light 8 connected to the control circuit 10, and a switch 9 for connecting to a power supply. The display touch screen 7 can display the temperature inside the constant temperature chamber 14, set the temperature control point through touch, and the control circuit 10 is controlled by the display touch screen.
[0028] The working principle of this utility model is as follows:
[0029] Pour water into the polytetrafluoroethylene crucible 19 at one of the two fixed points 13, and pour gallium into the polytetrafluoroethylene crucible 19 at the other. The ocean thermometers placed on the ocean surface are verified using the fixed point 13 filled with gallium, and the ocean thermometers placed on the bottom layer are verified using the fixed point 13 filled with water.
[0030] Before use, first control the temperature of the constant temperature chamber 14 to -10°C. First, put one fixed point 13 into the constant temperature chamber 14 or the refrigerator for freezing, and then melt it after freezing; if the fixed point substance 20 is water, then control the temperature of the constant temperature chamber 14 to 5°C, and if the fixed point substance 20 is gallium, then control the temperature of the constant temperature chamber 14 to 35°C; after the fixed point substance 20 enters the melting state, its temperature will remain unchanged for a long time. At this time, insert the ocean thermometer 16 to be checked into the polytetrafluoroethylene thermometer well 21 on the constant temperature chamber 14 and the fixed point 13 through the jack 15 and the thermal insulation sealing ring for 30 seconds of measurement; finally, compare the average data of the ocean thermometer 16 with the triple point of water (0.01°C) or the melting point of gallium (29.7646°C). The ocean thermometer 16 that meets the scientific requirements can be used for on-site applications.
[0031] After completing a fixed point 13, take out the fixed point 13, and then put another fixed point 13 into the constant temperature chamber 14 and conduct the verification as described above.
[0032] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the creative concept of the present utility model, several variations and improvements can still be made, and these all fall within the protection scope of the present utility model.
Claims
1. An on-site verification device for a marine thermometer, characterized in that: It includes an air thermostat and two fixed points (13). Inside the outer shell of the air thermostat, there is a constant-temperature chamber (14) for placing the fixed points (13). On the outer shell of the air thermostat corresponding to the constant-temperature chamber (14), there is an openable and closable thermostat cover (1); inside the air thermostat, there is also a constant-temperature control system which is located outside the constant-temperature chamber (14) and controls the temperature inside the constant-temperature chamber (14); the fixed point (13) includes a stainless-steel upper cover (17), a stainless-steel outer shell (18) and a polytetrafluoroethylene crucible (19). The polytetrafluoroethylene crucible (19) is located inside the stainless-steel outer shell (18). On the stainless-steel outer shell (18), there is an openable and closable stainless-steel upper cover (17). On both the stainless-steel upper cover (17) and the polytetrafluoroethylene crucible (19), there are polytetrafluoroethylene thermometer wells (21) for inserting the marine thermometer to be inspected (16). The polytetrafluoroethylene crucible (19) is filled with a fixed-point substance (20); the polytetrafluoroethylene crucibles (19) of the two fixed points (13) are filled with fixed-point substances (20) with different phase-change temperatures and are successively placed in the constant-temperature chamber (14) for verification.
2. The on-site verification device for the ocean temperature measuring instrument according to claim 1, wherein: On the thermostat cover (1), there is a marine thermometer jack (15). In the jack (15), there is a heat-insulating sealing ring. The marine thermometer (16) to be inspected is inserted into the polytetrafluoroethylene thermometer well (21) through the jack (15) and is in close contact with the heat-insulating sealing ring.
3. The on-site verification device for the ocean temperature measuring instrument according to claim 1, characterized in that: One side of the thermostat cover (1) is hinged to the constant-temperature chamber (14) through a hinge (2) for opening and closing the constant-temperature chamber (14); inside the constant-temperature chamber (14), there is heat-insulating material.
4. The on-site verification device for the ocean temperature measuring instrument according to claim 1, characterized in that: The constant-temperature control system includes a control circuit (10) and a temperature-measuring resistor (12), a refrigeration device and a heating and temperature-control device which are respectively connected to the control circuit (10). The constant-temperature chamber (14) is connected to an air duct (4) and is equipped with a temperature-measuring resistor (12). The refrigeration device and the heating and temperature-control device are respectively connected to the air duct (4).
5. The on-site verification device for the ocean temperature measuring instrument according to claim 4, characterized in that: The air duct (4) is one or more. Inside each air duct (4), there is a fan (3) connected to the control circuit (10); when there are multiple air ducts (4), the refrigeration device and the heating and temperature-control device are connected to each air duct (4).
6. The on-site verification device for the ocean temperature measuring instrument according to claim 4, characterized in that: The heating and temperature-control device includes a heating coil (5) for rapid heating and a thyristor heater (6) for precise temperature control. The heating coil (5) and the thyristor heater (6) are respectively connected to the control circuit (10) and are respectively connected to the air duct (4).
7. The on-site verification device for the ocean temperature measuring instrument according to claim 4, characterized in that: The refrigeration device is a compression refrigerator (11).
8. The on-site verification device for the ocean temperature measuring instrument according to claim 4, characterized in that: The constant-temperature control system also includes a display touch screen (7), an indicator light (8) connected to the control circuit (10) and a switch (9) for connecting to the power supply.