High-precision seawater variable temperature constant temperature tank system

Abstract

The invention discloses a high-accuracy constant-temperature tank system with temperature change of seawater. The high-accuracy constant-temperature tank system comprises a main tank, a temperature control auxiliary tank, a cold water tank and a control cabinet, wherein the main tank is connected with the temperature control auxiliary tank and the cold water tank by pipelines; a fast temperature change device of the main tank comprises a fast heater and a cooling coil; a temperature control device of the main tank comprises a temperature control heater and a temperature control coil; a temperature control device of the temperature control auxiliary tank comprises a temperature control heater of the auxiliary tank; a key pressing switch of the control cabinet is connected with electromagnetic valve switches on the pipelines for connecting the temperature control auxiliary tank and the cold water tank with the main tank; the main tank is internally provided with a flow guiding cover, a flow uniformizing plate is arranged at the bottom of the flow guiding cover, and a magnetic coupling stirrer is arranged at the bottom of the main tank. The high-accuracy constant-temperature tank system has the advantages that the split type combined structure of the main tank, the temperature control auxiliary tank, the cold water tank and the control cabinet is adopted for enlarging a main tank body; due to the magnetic coupling stirrer, convenience is brought for stirring and mixing seawater in the large tank body, and leakage caused by untight sealing can be avoided; a temperature control instrument of the main tank is provided with a PID (Proportion Integration Differentiation) control device so as to perform verification, calibration and detection on a seawater temperature sensor of the high-accuracy constant-temperature tank with a plurality of temperature points ranging from -2 DEG C to 40 DEG C and fluctuation being superior to 0.001 DEG C.

Description

technical field [0001] The invention relates to a detection device for a seawater temperature sensor, in particular to a constant temperature tank device for detecting a seawater temperature sensor. Background technique [0002] The constant temperature bath is a necessary device to detect the seawater temperature sensor. Putting the seawater temperature sensor into the constant temperature bath that can control the temperature can verify, calibrate and test the technical performance and measurement accuracy of the seawater temperature sensor. [0003] The existing constant temperature tank adopts an integrated structure, and the control unit, the tank body, the heater and the compressor are all integrated together, which limits the size of the tank body and the temperature control accuracy. Moreover, the constant temperature tank basically relies on the motor to drive the shaft and blades to rotate to form agitation. When there is a lot of medium in the constant temperature...

AI Technical Summary

Problems solved by technology

[0006] In view of the fact that the existing constant temperature tank system cannot meet the increasingly higher accuracy requirements of seawater temperature sensors, the present invention introduces a high-precision seawater variable temperature constant temperature tank system, which uses a combination of main tank, temperature control auxiliary tank, cold water tank and control cabinet Split structure to increase the size of the main tank, using a magnetic coupling stirrer to facilitate the mixing of seawater in the large tank to avoid leakage caused by poor sealing. The main tank temperature controller is equipped with a PID control device to suppress the oscillation of the temperature control heater and improve the control Accuracy, in order to realize the verification, calibration and detection of high-precision seawater temperature sensors with a constant temperature bath with multiple temperature points from -2°C to 40°C and a fluctuation better than 0.001°C

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