[Meter's Latest Patent] Ultrasonic Water Case with Single-sided Double-check Valve Structure

Content Description

The utility model belongs to the technical field of metering equipment, in particular to an ultrasonic water meter case with a single-sided double-check valve structure.

Background of the invention

With the widespread use of tap water throughout the world, water meters used to measure water consumption are indispensable tools for tap water use.

Ultrasonic flowmeter is a new type of flow meter developed in recent years. As long as the ultrasonic transmission fluid can be used to measure ultrasonic flow, the internal structure of the ultrasonic flowmeter is only two probes, and there is no pressure loss when used, so it is not affected by media. The impact of high measurement accuracy and use more and more widely. Its working principle is to use time difference method for flow measurement. The time difference method uses the difference between the propagation time of the ultrasonic pulse in the fluid and the countercurrent propagation time to measure the fluid flow rate, thereby calculating the fluid flow in the pipe. Therefore, the stability of the fluid flow has an important influence on the accuracy of the ultrasonic water meter measurement. The existing ultrasonic water meter does not have too many intervention measures for the flow state; on the other hand, many water meters are equipped with check valves to prevent backflow. However, because the ultrasonic water meter has certain requirements for the ultrasonic sound path for the accuracy of the measurement, installing the check valve will affect the ultrasonic sound path. Therefore, in the prior art, no check valve is installed in the ultrasonic water meter.

Summary of the Invention

The utility model aims at the deficiencies in the prior art and provides an ultrasonic water watch case with a unilateral double check valve structure.

In order to solve the above technical problems, the utility model is solved by the following technical solutions: An ultrasonic water watch case with a single-sided dual-check valve structure includes a measuring tube with a water inlet and a water outlet, characterized in that: The middle section of the measuring tube is provided with a mounting hole for installing an ultrasonic signal device. One end of the water outlet has an extension section, and a double check valve is arranged in the extension section. The utility model realizes the successful addition of the double-check valve structure under the premise of ensuring the effective ultrasonic sound path and the related performances to be stable, and installing the check valve at the outlet end also ensures the stability of the water flow within the effective ultrasonic measurement range. Makes the data collected during the measurement more accurate.

The figure is a schematic diagram of the measuring tube of the embodiment of the present utility model

In order to obtain better technical effects, further technical measures include: a front stop and a rear stop are provided at both ends of the extension section, and the double check valve is disposed between the front stop and the rear stop. . The front and rear check valves of the check valve ensure dimensional accuracy in the design and manufacturing process, and make it impossible for the check valve to be filled with shocks caused by the flow of water and even be flushed out of the watch case by the water flow.

Further improvement: a check valve bushing is disposed between the double check valve and the inner wall of the extension section.

In order to realize the multi-functional detection of the ultrasonic water meter, it is further improved: there are two mounting holes mentioned above, and at least one multi-component fixed mounting hole is provided between the mounting holes. The above structure can make the ultrasonic water meter can install a plurality of parts with other detection functions. Preferably, the above-mentioned multifunctional component fixed mounting hole is one or both of a temperature sensor mounting hole and a pressure sensor mounting hole.

Compared with the prior art, the utility model has the beneficial effects that: the utility model realizes the successful addition of the double check valve structure under the premise of guaranteeing the effective ultrasonic sound path and the related performance to be stable, and installs the check back at the outlet end. The valve also ensures the stability of the water flow within the effective ultrasonic measurement range, making the data collected during the measurement process more accurate.

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