CN201549547U - An automatic temperature measuring device for a flow battery - Google Patents

Abstract

The utility model discloses an automatic temperature measuring device for a liquid flow battery, in particular to an automatic temperature monitoring device for a liquid flow battery. It includes a temperature sensor and a temperature acquisition module, the temperature sensor is connected to the temperature acquisition module through a data line, a bus converter and a heat exchange power supply module are connected to the temperature acquisition module, and the bus converter is connected to an industrial control computer. The utility model adopts a plurality of temperature sensors evenly distributed on the inner wall of the liquid storage tank and the inner side of the bottom of the liquid storage tank to detect the temperature of the liquid flow battery of the liquid storage tank, and eliminates the inaccurate measurement results caused by the failure of a single temperature sensor Problem, this device can prompt the damage of a single temperature sensor to avoid measurement errors. The industrial computer controls the heat exchange power supply module through the temperature acquisition module to keep the temperature in the liquid storage tank within the predetermined range, which greatly improves the equipment. Running stability.

Description

An automatic temperature measuring device for a flow battery

technical field

The utility model relates to a battery temperature measuring device, in particular to an automatic temperature monitoring device for a liquid flow battery.

Background technique

Temperature is a physical quantity with statistical significance. It has been measured for a long time. Various temperature measurement technologies, temperature sensors and temperature measurement instruments at home and abroad are quite mature, and the technology is also quite advanced. It is not difficult to monitor it continuously for a long time At present, various temperature measurement technologies are developing in the direction of digitization and bus. In addition, according to the heat conduction theory, coupled with various boundary and environmental conditions, various temperature distributions and temperature drop laws can also be calculated theoretically.

Temperature monitoring devices generally have the function of reporting temperature alarms and issuing related instructions. At present, temperature monitoring devices have been widely used in various fields. When the temperature exceeds the high temperature alarm point or is lower than the temperature alarm point, the temperature monitoring device needs to report Temperature alarm signal, and accurately issue control commands to shut down equipment or protect equipment by other means. At the same time, the temperature monitoring equipment must ensure that it cannot report false temperature alarm signals within the normal temperature range, let alone issue false monitoring instructions. Long-term reliable work in the application environment, these requirements for the temperature monitoring device make the temperature monitoring device must have high reliability.

Due to the capacity, discharge rate and main composition of the flow battery itself, it is closely related to its safety and temperature. If the temperature is too low, the capacity of the flow battery will be reduced, and if the temperature is too high, the self-discharge rate of the flow battery will be accelerated. , and at a temperature that is too high (higher than 40°C) or too low (lower than 0°C), crystals will precipitate out of the solution in the flow battery. When crystals precipitate, it is easy to damage the exchange membrane inside the flow battery , It is also easy to damage the power pump of the liquid flow battery solution circulation. The traditional flow battery temperature control is to control the heat exchanger for temperature adjustment through human intervention, or only use an independent sensor to detect the liquid storage tank externally. Temperature, often due to sudden changes in the climate or because the independent temperature sensor cannot normally detect the temperature change in the liquid storage tank, the staff cannot obtain first-hand temperature data in time to control the heat exchanger, so that the solution temperature in the liquid storage tank The change exceeds its optimum working temperature range, causing damage to the main components inside the flow battery, such as the exchange membrane and the power pump. The damage to the main components of the flow battery will also cause a more serious chain reaction, causing major accidents.

Utility model content

In order to solve the problem of improper temperature monitoring of the liquid flow battery in the prior art, which leads to the failure of the flow battery, the utility model provides a liquid flow that can realize the real measurement of the temperature in the liquid storage tank and automatically adjust the temperature within a predetermined temperature range. An automatic battery temperature monitoring device, the specific scheme is as follows: an automatic temperature measuring device for a liquid flow battery, including a temperature sensor and a temperature acquisition module, the temperature sensor is connected to the temperature acquisition module through a data line, and it is characterized in that the temperature acquisition The module is connected with a bus converter and a heat exchange power supply module, and the bus converter is connected with an industrial control computer.

Another preferred mode of the present utility model: there are no less than three temperature sensors and they are evenly distributed in the liquid storage tank of the flow battery.

The utility model adopts a plurality of temperature sensors evenly distributed on the inner wall of the liquid storage tank and the inner side of the bottom of the liquid storage tank to detect the temperature of the liquid flow battery of the liquid storage tank, and eliminates the inaccurate measurement results caused by the failure of a single temperature sensor Problem, this device can prompt the damage of a single temperature sensor to avoid measurement errors. The industrial computer controls the heat exchange power supply module through the temperature acquisition module to keep the temperature in the liquid storage tank within the predetermined range, which greatly improves the equipment. stable operation.

Description of drawings

Fig. 1 structural representation of the utility model

Detailed ways

As shown in Figure 1, the industrial computer 5 of the automatic temperature measurement device, the bus converter 4 and the heat exchange power supply module 3 are all placed in the monitoring area, and the temperature acquisition module 1 is installed in the working area of the flow battery. Corrosion, so the temperature sensor 2 is made of anti-corrosion plastic material, and the plastic is a poor conductor of heat. More than three corrosion-resistant temperature sensors are evenly dispersed and fixed on the inner wall and bottom of the liquid storage tank 9. The purpose of this is In order to obtain more accurate temperature information in the liquid storage tank, the temperature signal output end of each corrosion-resistant temperature sensor 2 is connected to the signal input end of the temperature acquisition module 1 through the data line 6, and the bus output end of the temperature acquisition module 1 The signal input end of the bus converter 4 is connected through the data line, the signal output end of the bus converter 4 is connected with the signal input end of the industrial computer 5 through the data line, and the heat exchange power supply module 3 is connected with the temperature acquisition module 1 through the data line.

When working, the temperature acquisition module collects the temperature of the temperature sensor through the internal power-off device, and transmits the collected temperature to the bus converter, and then the bus converter transmits it to the industrial control computer. The data analysis software in the industrial control computer analyzes the collected temperature. The data is summarized and then analyzed. If the data of multiple sensors are consistent, it proves that the data is normal, and the temperature control instructions can be issued according to the collected data. If there is a big difference between one data and the other data, it means that the If there is a sensor failure, the industrial computer will give a corresponding "temperature sensor failure" prompt to remind the operator to repair the temperature sensor in time. Since multiple temperature sensors are used, the damage of a single temperature sensor will not cause automatic monitoring. The automatic control of the system stops. If the temperature exceeds the range, the industrial control computer will send a control command to the temperature acquisition module from the bus converter, and the relay device inside the temperature acquisition module will open or close the internal relay according to the feedback information, and then control the power supply of the heat exchanger module to achieve automatic control,

This solution uses three or more temperature sensors to prevent a certain temperature sensor from obtaining incorrect data information due to its own quality problems.

Claims (2)

1. An automatic temperature measuring device for a liquid flow battery, comprising a temperature sensor (2), a temperature acquisition module (1), the temperature sensor (2) is connected to the temperature acquisition module (1) through a data line (6), and its It is characterized in that a bus converter (4) and a heat exchange power supply module (3) are connected to the temperature acquisition module, and the bus converter (4) is connected with an industrial control computer (5). 2. The automatic temperature measuring device according to claim 1, characterized in that there are no less than three temperature sensors (2) and they are evenly distributed in the liquid storage tank (9) of the flow battery.

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