The working principle and design of the gas meter cut-off and tightness detection device
Today, I will introduce you a national invention authorized patent-gas meter cut-off and tightness detection device. The patent was applied for by Ningbo Tianxin Instrument Co., Ltd., and the authorization was announced on February 15, 2017. The utility model relates to a gas meter detection device, in particular to a gas meter cut-off and tightness detection device. With the improvement of living standards and the strengthening of environmental protection awareness, people’s daily cooking fuel has been converted from wasteful resources such as firewood and coal, and serious pollution of conventional energy sources to the use of natural gas and gas, and even electricity and other clean energy sources. Here, because the gas needs to be metered, a gas meter is needed. With its automatic accumulation function, those who use natural gas or pipeline gas can easily know how much gas is used so that they can consume it every month. Payment for the number of cubic meters of gas. In addition, the prior art gas meter has been able to realize functions such as remote meter reading or prepayment, which makes the use of gas more convenient. However, as a metering device, the metering medium of a gas meter is city gas which is flammable, explosive or even toxic. Once it leaks in the surrounding air and reaches the explosion limit, it will cause dangers such as combustion, explosion or even poisoning. As a compulsory verification and measurement instrument, the gas meter is not only used for payment settlement, but also related to the safety of life and property. Therefore, the airtightness of the gas meter is particularly important in the main technical indicators. In the prior art, the sealing qualification test is often reflected by parameters, which is not intuitive enough, and therefore its efficiency is not high. In view of this, the present invention provides a gas meter cut-off and tightness detection device that intuitively displays the detection results to improve the detection efficiency in response to the technical problems in the prior art that the detection result cannot be intuitively judged and the detection efficiency is not high. The technical solution of the utility model is to provide a gas meter cut-off and tightness detection device with the following structure, which includes an air pump, a pressure gauge, an electromagnetic valve, a control module and a water container. The air pump passes through the pressure gauge and the electromagnetic valve in turn , Communicate with the input port of the detected gas meter, the output port of the detected gas meter communicates with the water container, and the control module is electrically connected with the solenoid valve. By adopting the above structure, the utility model has the following advantages compared with the prior art. Through the utility model, the gas source generated by the gas pump passes through the pressure gauge and the solenoid valve through the connecting pipeline to reach the input port of the gas meter through the control module. Control the opening and closing of the solenoid valve. When the gas meter cuts off the tightness test, the solenoid valve is opened. The source of a certain pressure enters the gas meter. At this time, the motor valve of the gas meter is closed. The port has no gas source output. In order to obtain the test results more intuitively, connect the output port of the gas meter to the water container. If the airtightness is good, no bubbles will be generated in the water container, which means it is qualified, otherwise it is not qualified. The utility model can directly convert the air tightness detection into observing whether the water container is bubbling, so that the detection result is more intuitive, and the detection efficiency is improved. Preferably, a pressure regulating valve for regulating the pressure input to the gas meter is connected between the gas pump and the pressure gauge. Because cutting off the sealing performance needs to be tested under a certain air pressure, if the air pressure is too high, it may break through the motor valve of the gas meter and cause it to fail. The control module includes a single-chip microcomputer and a relay, the relays are respectively electrically connected with the single-chip microcomputer and the solenoid valve, and the single-chip microcomputer controls the opening and closing of the solenoid valve through the relay. Control is more convenient. The control module also includes an LCD screen, and the single-chip microcomputer is electrically connected with the LCD screen to display relevant parameters on the LCD screen. SDEC 201-400KW Diesel Generator Sdec 201-400Kw Diesel Generato,Sdec 320Kw Diesel Genset,Sdec 350Kw Diesel Genset,Sdec 250Kw Diesel Genset Shanghai Kosta Electric Co., Ltd. , https://www.generatorkosta.com