NB-IOT intelligent water meter with sensitive water volume counting

Abstract

The invention disclose an NB-IOT intelligent water meter with sensitive water volume counting. The water meter comprises a main flow channel, connectors, a bypass flow channel, a dial plate and a flow assembly, the connectors are arranged at the two ends of the main flow channel respectively to serve as a water network end and a user end, the bypass flow channel is arranged on the side face of the main flow channel, the flow assembly is arranged in the middle of the main flow channel, and the flow assembly is also arranged on the bypass flow channel. The dial plate is fixed to the outer surface of the main flow channel and connected with the two flow assemblies. The bypass flow channel is arranged on the side face of the main flow channel and provides a backflow or flow expanding branch for a water body, when the flow is small and the whole machine flow from the water network end to the user end is smaller than the starting flow of a traditional standard, large flow still passes through the main flow channel through switching of the flow structure, and then, most of the flow on the main flow channel is baffled and returned to the inlet of the main flow channel through the bypass flow channel, so that the two flow components are positioned in a flow high-sensitivity area instead of a low-sensitivity area under extremely low flow.

Description

technical field [0001] The invention relates to the technical field of smart water meters, in particular to an NB-IOT smart water meter with sensitive water volume counting. Background technique [0002] The water meter is a widely used flow detection device. Residents’ domestic water and enterprise’s industrial water need to be measured by the water meter. In the prior art, the water meter also uses a large number of traditional runner-type metering core water meters. The runner structure is small. There is no rotation under the flow rate, that is, there is fluid flowing in the pipeline but it cannot be measured by the water meter. Statistics show that the water fee corresponding to the small flow rate that is not included in the annual water consumption is huge, and there are leaks in the pipeline in some occasions , if the water meter can measure and give a signal for a small flow, it can prevent further damage and loss in many industrial occasions. [0003] In tradition...

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Problems solved by technology

[0002] The water meter is a widely used flow detection device. Residents’ domestic water and enterprise’s industrial water need to be measured by the water meter. In the prior art, the water meter also uses a large number of traditional runner-type metering core water meters. The runner structure is small. There is no rotation under the flow rate, that is, there is fluid flowing in the pipeline but it cannot be measured by the water meter. Statistics show that the water fee corresponding to the small flow rate that is not included in the annual water consumption is huge, and there are leaks in the pipeline in some occasions , if the water meter can measure and give a signal for a small flow, it can prevent further damage and loss in many industrial occasions

[0003] In traditional water meters, the small flow that cannot be measured is defined as the initial flow, that is, the initial flow that can just drive the water meter to be measured. This flow is generally better than the minimum step change value (sensitivity , resolution) should be large; in addition, in order to improve the detection sensitivity of the water meter under small flow, the flow channel of the water meter may be set smaller, and the smaller flow channel will cause greater resistance to the flow of water under high flow; High sensitivity and large flow performance are often unable to balance

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