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System and method for judging various faults of thermostatic bath through temperature sensor combination

A technology of temperature sensor and constant temperature bath, applied in the field of constant temperature bath, can solve the problems of complex structure, large temperature field damage, unable to push the medium to complete the circulation and so on.

Active Publication Date: 2020-06-19
济南长峰致远仪表科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention discloses a system and method for judging various faults of a constant temperature tank through a combination of temperature sensors, which solves the problem that the reduction of the heat transfer medium will cause the liquid level in the container to drop below the guide plate, and the agitator cannot push the medium complete the loop
But at the same time, it introduces problems such as complex structure and large damage to the temperature field.

Method used

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  • System and method for judging various faults of thermostatic bath through temperature sensor combination
  • System and method for judging various faults of thermostatic bath through temperature sensor combination
  • System and method for judging various faults of thermostatic bath through temperature sensor combination

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Embodiment 1

[0037] Such as figure 1 The illustrated embodiment discloses a system for judging various faults of a constant temperature tank through a combination of temperature sensors, including a liquid container, a temperature control system, a stirring system, and a heating and cooling system. It is characterized in that the system is provided with a first temperature sensor and a second Two temperature sensors, the first temperature sensor is connected to a low-precision protection thermostat, and is used to cut off the power supply to the entire thermostatic bath when an obvious over-temperature fault occurs; the second temperature sensor is connected to a precision thermostat pair The temperature of the whole constant temperature tank is controlled.

[0038] The temperature system difference between the first temperature sensor and the second temperature sensor is less than 1°C. The first temperature sensor and the second temperature sensor pass through the sensor seat, and pass t...

Embodiment 2

[0041] Such as figure 2 The illustrated embodiment discloses a method for judging various faults of a constant temperature tank through a combination of temperature sensors, and the method includes the following steps:

[0042] The S1 constant temperature tank is powered on and enters the detection initialization;

[0043] S2 judges whether the stirring system is abnormal by comparing the temperature difference of the temperature sensor at different height differences;

[0044] S3 continuously monitors the temperature value of the temperature sensor, records the temperature change rate, and compares it with the control intention of the system;

[0045] S4 If the control intends to heat up, the rate of change should be a positive value, and when the intent is to cool down, the rate of change should be a negative value; otherwise, it can be judged that the temperature control system is broken down;

[0046] S5 judges whether the high-temperature liquid level is normal through...

Embodiment 3

[0052] This embodiment discloses a constant temperature bath (see Figure 3-6 ) equipped with two temperature sensors. Wherein the height difference between the temperature sensing part of the first temperature sensor and the temperature sensing part of the second temperature sensor is more than 20 centimeters. The second temperature sensor is connected with a precision temperature controller to control the temperature of the entire thermostatic bath. The first temperature sensor is connected with a low-precision protection thermostat, and is used to cut off the power supply to the entire thermostatic tank when an obvious over-temperature fault occurs.

[0053] Under normal circumstances, the temperature system difference between the first temperature sensor and the second temperature sensor is less than 1°C. When the stirring system stops working, the unilateral operation of the electric heater will cause the temperature of the middle and upper part of the constant temperat...

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Abstract

The invention relates to the technical field of thermostatic baths. The invention particularly relates to a system and a method for judging various faults of a thermostatic bath through a temperaturesensor combination. The system comprises a liquid container, a temperature control system, a stirring system and a heating and refrigerating system, the system is provided with a first temperature sensor and a second temperature sensor, and the first temperature sensor is connected with a low-precision temperature controller for protection and used for cutting off a power supply for the whole thermostatic bath when an obvious overtemperature fault occurs; and the second temperature sensor is connected with the precise temperature controller to control the temperature of the whole thermostaticbath. In the thermostatic bath, only a plurality of temperature sensors of a single type are used to form a monitoring system. The temperature sensors are independently used or used in cooperation, monitoring of various physical parameters at the high temperature can be achieved, the problem that spare tires are additionally arranged on the temperature control sensors is solved, and various monitoring requirements in the thermostatic bath can be met.

Description

technical field [0001] The invention relates to the technical field of constant temperature tanks, in particular to a system and method for judging various faults of the constant temperature tank through a combination of temperature sensors. Background technique [0002] The constant temperature tank stirring system is an important part of the constant temperature tank. It mainly consists of a motor driving a long-axis stirring blade to stir the liquid in the tank to form a stable temperature field. If the system is not working properly, the temperature of the liquid at various points in the tank will vary greatly. If the abnormality of the stirring system cannot be found in time, the temperature in some areas of the constant temperature bath will be too high, causing the silicone oil in it to exceed the flash point and burn, which will cause fire and other accidents. [0003] To judge whether the mixing system is working normally, the usual method is to use a speed recordi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M99/00
CPCG01M99/00
Inventor 徐华太郭沈辉李颖孙伟王庆玉陈玉峰
Owner 济南长峰致远仪表科技有限公司