Device for detecting valve opening in-place of gas meter based on photoelectric reflection technology

Abstract

The invention provides a device for detecting valve opening in-place of a gas meter based on the photoelectric reflection technology, and relates to the technical field of gas meters. The device comprises a reducer tank body and a tank cover which are tightly connected to form a cavity structure, wherein a fixed station with a bulged inner wall is arranged on the tank cover; a light absorption chamber is formed by the fixed station, the tank cover and the reducer tank body; a guide sleeve is connected with the side wall of the reducer tank body, and is movably connected with a valve rod; the valve rod is positioned between the fixed station and the bottom plate of the reducer tank body; and the fixed station is connected with a photoelectric transceiver. The device can be used for solving the technical problem of detection failure caused by an unreliable gas meter valve-opening-in-place signal detection mechanism in the prior art, and has the beneficial effect of accurate and reliable gas meter valve-opening-in-place signal detection, has a compact structure, is reasonable in distribution and small in size, and is beneficial to gas meter minimization.

Description

technical field [0001] The invention relates to the technical field of gas meters, in particular to a structure of a valve opening detection device for a gas meter. Background technique [0002] With the continuous development of natural gas applications, the use of gas meters is also increasing sharply. At the same time, the quality and performance requirements of gas meters are also getting higher and higher. In the gas meter, the opening and closing of the valve is the primary condition for the operation of the gas meter. Whether the valve opening is in place directly affects the pressure loss of the gas meter, so accurate feedback of the valve opening in place signal is very important. At present, in the gas meter industry, the identification of the in-position signal is generally realized by the method of motor stall current and magnetic sensor detection. Motor stall current will affect the service life of the motor. Magnetic sensitive components are susceptible to e...

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Problems solved by technology

[0003] In order to solve the technical problem of detection failure caused by the unreliable detection mechanism of the gas meter valve opening in place signal in the prior art, the present invention provides a gas meter valve opening in place detection device based on photoelectric reflection technology to achieve reliable detection of the gas meter valve opening in place signal , simple structure and small size are conducive to the realization of the miniaturization of gas meters

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