Gas meter with safety control function and safety control method

Abstract

A gas meter with a safety control function and a safety control method are proposed. The gas meter includes: a sensing unit, which detects the flow of gas flowing through the gas meter; a control unit, which is connected to the sensing unit and is located inside or outside the gas meter. The safety unit determines whether an abnormal situation occurs based on the detection result of the sensing unit, and controls the safety unit to enable safety protection measures when it is determined that an abnormal situation occurs. The safety unit may include a safety valve that can be closed to block the gas flow. Based on the real-time flow rate obtained by the gas meter during the measurement process, the occurrence of abnormal conditions is detected, and safety protection measures are automatically activated when abnormal conditions occur. The gas meter with safety control function is low in cost, easy to popularize, can detect abnormal conditions in time, quickly and accurately and automatically shut off the gas input, thereby ensuring the safe use of gas.

Description

technical field [0001] The invention relates to the technical field of gas metering, in particular to a gas meter with a safety control function and a safety control method thereof. Background technique [0002] In the 12-5 strategic planning, it focuses on putting forward clear planning goals for clean and efficient use of energy. The proportion of natural gas entering households and industrial environments is increasing, and it is an important part of future clean energy. At the same time, the safe use of gas is becoming more and more important, and the urgency of industry requirements such as "safe kitchens" is becoming more and more urgent. [0003] In the existing gas use, safety measures are mostly completed using alarms based on concentration detection. When gas leakage or pipe burst occurs, the concentration of combustible gas in the air reaches a certain threshold, which will trigger the alarm to send an alarm signal. After receiving the alarm signal, the securit...

AI Technical Summary

Problems solved by technology

At this time, there is often a large amount of gas leakage, and when the alarm information is transmitted to the safety command center and sent to investigate, the hazard has often occurred, and the purpose of rapid detection and disposal cannot be achieved

[0007] 2) Functional limitations

In addition, it is impossible to prevent the abnormal leakage of gas caused by man-made destructive behaviors such as stealing gas and pulling out the pipe; although the self-closing valve can be closed in the event of a pipe burst, due to the mechanical principle, the threshold for judging the burst cannot be adjusted flexibly. The performance is poor, and it cannot be started under the action of a small amount of gas leakage or a long-term leakage of normal flow

[0009] 3) Poor accuracy

Due to the eating habits of the Chinese, there are often irritating gases such as alcohol and acetic acid in the cooking process, which can easily cause false alarms, which in turn affects the correctness and seriousness of the alarms, and even residents resist the use of them. Increased risk of gas use

[0011] 4) Additional costs

The high cost of equipment largely limits the popularization of products and measures, making the gas use environment of most households in a dangerous situation of lack of safety protection

Images