Method for realizing safety management of liquefied petroleum gas by monitoring pressure change of medium
A technology of liquefied petroleum gas and medium pressure, which is applied in the container discharge method, container filling method, gas/liquid distribution and storage, etc. It can solve the problems of poor reliability and complex device structure, and achieve the effect of automatic safety control
Pending Publication Date: 2021-08-10
威海盛泰智能仪器仪表有限公司
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Problems solved by technology
[0006] The purpose of the present invention is to solve the technical problems of complex structure and poor reliability of existing devices, and provide a method with good reliability to realize the safety management of liquefied petroleum gas by monitoring the change of medium pressure
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Embodiment 1
[0018] The invention provides a method for realizing the safety management of liquefied petroleum gas by monitoring the change of the medium pressure in the decompression chamber of the decompression valve. Pressure sensors are respectively arranged inside and outside the medium, the medium is decompressed gas, and the medium pressure It is a gauge pressure value, which includes the following steps: (1) the difference between the gauge pressure value of the medium before and after the set period of time ((for example, 3 seconds)) is greater than the set value of 20Pa, which is a fluctuating signal; less than the set value , is no fluctuating signal; when in use, measure the data every 3 minutes, the difference value will rise continuously or tend to be stable after rising, and the time will reach the set time of 15 minutes, it will be judged that the gas consumption has stopped, and the valve will be automatically closed; (2 ) the non-fluctuating signal lasts for a set time of ...
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The invention relates to a method for realizing safety management of liquefied petroleum gas by monitoring the pressure change of a medium, and solves the technical problems of complex structure and poor reliability of an existing device. The interior and exterior of the medium are provided with pressure sensors correspondingly. The method comprises the following steps: if the difference value of an initial gauge pressure value and a later gauge pressure value of the medium within a set time period is greater than a set value, it is judged that a fluctuation signal exists, if the difference value is smaller than the set value, it is judged that a non-fluctuation signal exists, during use, data are measured at regular time, the difference value continuously rises or tends to be stable after rising, and when the duration reaches the set time, it is judged that gas use is stopped, and a valve is automatically closed; the non-fluctuation signal lasts for a set time, it is judged that unattended gas consumption exists, and the valve is closed; and the gauge pressure pi is monitored regularly, and if p-p is larger than P<max>, the valve is closed, and it is prompted that the flow increment exceeds the limit. The method can be used in the field of safety management of liquefied petroleum gas.
Description
technical field [0001] The invention relates to a liquefied petroleum gas management method, in particular to a method for realizing the safety management of liquefied petroleum gas by monitoring the change of medium pressure. Background technique [0002] The pressure of bottled liquefied petroleum gas is between 0.3Mpa and 1.6Mpa, and it needs to be decompressed by a decompression device before it can be used by users. However, due to various reasons, during the use of bottled liquefied gas, safety accidents such as forgetting to close the gas valve or gas leakage are prone to occur. [0003] The Chinese utility model patent with the publication number CN205806930U discloses a comprehensive protector for liquefied gas cylinders. In order to realize real-time monitoring of liquefied gas cylinders, when the pressure, temperature and flow of liquefied gas cylinders are abnormal or gas leakage occurs, it will alert the alarm and quickly cut off the protective device. Gas sour...
Claims
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IPC IPC(8): F17C13/02F17C13/04F17C13/12
CPCF17C13/025F17C13/04F17C13/123
Inventor 董斐然崔玉华
Owner 威海盛泰智能仪器仪表有限公司