Internet of Things diaphragm gas meter with flow limiting function

Abstract

The embodiment of the invention discloses an Internet of Things diaphragm gas meter with a flow limiting function. The gas meter comprises a flow limiting valve, a flow detector and an alarm device; the flow limiting valve comprises a flow limiting valve pipe; a flow limiting plate is arranged in the middle of the flow limiting valve pipe; an overflowing hole is formed in the flow limiting plate;inlets and outlets are respectively formed in two ends of the flow limiting valve pipe; a driving cavity is formed in the upper end of the flow limiting valve pipe; a push rod is vertically arranged in the driving cavity; the push rod extends into the flow limiting valve pipe; the bottom of the push rod is connected with a push plate; multiple supporting rods are arranged below the push plate. A valve element is arranged at the lower end of each supporting rod; each valve element is located over one corresponding overflowing hole, the supporting rods are different in length, and the valve elements are correspondingly inserted into the overflowing holes in sequence. According to the invention, the gas flow can be detected, when the gas flow is close to or exceeds the maximum flow of a gas meter, the flow is limited through the flow limiting valve, the gas meter is protected, the gas flow is linearly changed in the flow limiting process and is easier to master, and therefore accurate control over the gas flow is achieved.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of gas metering, in particular to an Internet of Things membrane gas meter with a current limiting function. Background technique [0002] At present, the nominal flow rate is 25m 3 Membrane gas meters are the mainstream products for gas meters of / h and below, and IoT membrane gas meters are the first generation of smart gas meters, and they are also the mainstream products of smart gas meters at present. The Internet of Things membrane gas meter uses the Internet of Things module + Internet of Things card to realize the data transmission and interaction between the gas meter data and the gas operator's management platform through the mobile, telecom or China Unicom network. [0003] The Internet of Things membrane gas meter has an always-on function, which realizes the data interaction between the platform and the gas meter. The working status and usage data of gas meters are up...

AI Technical Summary

Problems solved by technology

[0007] For this reason, the embodiment of the present invention provides an Internet of Things membrane gas meter with a current-limiting function to solve the problem of gas Meter damage or major deviations in gas meter measurement

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