Double-track ultrasonic water meter pipe section structure

Abstract

The utility model relates to a double-channel ultrasonic water meter pipe section structure which comprises a water meter pipe section, a flow guide pipe, an end cover, an end cover sealing ring, a pressing ring, an ultrasonic transducer, a transducer sealing ring, a plug, a plug sealing ring and a thermistor, the water meter pipe section is provided with two channels, and the two channels are installed on the opposite sides of a pipeline and are symmetrically arranged in the flowing direction of fluid. Each sound channel comprises a transmitter and a receiver, the choke plug fixes the flow guide pipe in the water meter pipe section through a square groove formed in the upper portion of the water meter pipe section and the upper end of the flow guide pipe, the built-in flow guide pipe is subjected to hole shrinkage treatment, and the speed of water flowing through the interior is increased; the flow guide pipe is provided with a large chamfer, so that the water flow speed changes smoothly, the transducers are arranged in a correlation mode, signals are better transmitted and received, the metering data are closer to the real flow, and the metering precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of water meters, and more specifically to a dual-channel ultrasonic water meter pipe section structure. Background Technology

[0002] Like ordinary ultrasonic water meters, dual-channel ultrasonic water meters employ ultrasonic flow measurement technology and boast a relatively large range ratio, solving the problems of idling and failure to measure small flows in traditional water meters. Currently, dual-channel ultrasonic water meters are widely used in urban water supply pipelines, individual household water meters, water resource extraction, and various industrial sites. We know that the flow state of liquids in pipelines is very complex, often influenced by impurities or changes in external environmental factors such as temperature and pressure. According to fluid mechanics descriptions and related experimental data, the velocity curve of liquids in pipelines is bullet-shaped, meaning that the velocity is high in the middle and low at the periphery. Single-channel ultrasonic water meters measure the cross-sectional area velocity of the pipe to calculate the flow rate. When the pressure is low and the liquid velocity is low, the instrument performance is good, resulting in a small measurement error that generally meets requirements. However, when the liquid velocity increases and the straight pipe section is poor, the measurement error of a single-channel ultrasonic water meter will be relatively large. Therefore, dual-channel ultrasonic water meters can neutralize the measurement error of single-channel ultrasonic water meters through comprehensive calculations from another direction, making the measured flow rate data closer to the actual flow rate. In other words, dual-channel ultrasonic water meters have smaller measurement errors and are more economical than single-channel ultrasonic water meters. Summary of the Invention

[0003] This utility model provides a dual-channel ultrasonic water meter pipe section structure. The built-in guide pipe is made with a reduced diameter to increase the water flow velocity passing through it. The guide pipe has a large chamfer to make the water flow velocity change smoothly. The transducers are arranged in a through-beam configuration to better transmit and receive signals, making the metering data closer to the actual flow rate and improving metering accuracy.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] The dual-channel ultrasonic water meter pipe section structure includes a water meter pipe section, a guide pipe, an end cap, an end cap sealing ring, a pressure ring, an ultrasonic transducer, a transducer sealing ring, a plug, a plug sealing ring, and a thermistor. Its characteristics are:

[0006] The inner diameter of the guide pipe is smaller than the inner diameter of the water meter pipe section;

[0007] Both the inlet and outlet ends of the guide pipe are equipped with large chamfers;

[0008] The upper end of the guide tube is provided with a square groove;

[0009] The plug secures the guide pipe inside the water meter pipe section via a square groove located above the water meter pipe section and at the upper end of the guide pipe.

[0010] A sealing ring is provided between the plug and the guide tube;

[0011] The plug is equipped with a thermistor;

[0012] The water meter pipe section is equipped with two sound channels, which are installed on opposite sides of the pipe and symmetrically placed along the direction of fluid flow. Each sound channel contains a transmitter and a receiver.

[0013] The ultrasonic transducer is installed in two channels in the water meter pipe section.

[0014] The ultrasonic transducer is fitted with a transducer sealing ring.

[0015] The pressure ring presses the ultrasonic transducer tightly;

[0016] The end cap seals the ultrasonic transducer inside the sound channel.

[0017] The end cap is threadedly connected to the ultrasonic channel, and an end cap sealing ring is provided between the two.

[0018] The beneficial effects of this utility model are:

[0019] The present invention relates to a dual-channel ultrasonic water meter pipe section structure, in which the transducers are arranged in a through-beam configuration, which improves signal transmission and reception, making the metering data closer to the actual flow rate and improving metering accuracy. Attached Figure Description

[0020] Appendix Figure 1 This is a schematic diagram of the pipe section structure of the dual-channel ultrasonic water meter of this utility model. Detailed Implementation

[0021] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] As attached Figure 1 As shown: The structure of the dual-channel ultrasonic water meter pipe section includes the water meter pipe section (1), the guide pipe (9), the end cap (2), the end cap sealing ring (3), the pressure ring (4), the ultrasonic transducer (5), the transducer sealing ring (6), the plug (7), the plug sealing ring (8), and the thermistor.

[0023] The water meter pipe section is equipped with two sound channels, which are installed on opposite sides of the pipe and symmetrically placed along the direction of fluid flow. Each sound channel contains an ultrasonic transmitter and an ultrasonic receiver. The ultrasonic transmitter sends ultrasonic waves, and the ultrasonic receiver receives ultrasonic waves.

[0024] Two pairs of ultrasonic transducers are installed in the two channels of the water meter pipe section respectively. The installation method is the same. The following is an example of installation at one end of one channel. The ultrasonic transducer is fitted with a transducer sealing ring and placed inside the channel. The pressure ring presses the ultrasonic transducer tightly. Then, the end cap is fitted with the end cap sealing ring and connected to the channel by threads. In this way, the ultrasonic transducer is sealed inside the channel.

[0025] The inner diameter of the guide pipe is smaller than that of the water meter pipe section, so it can be placed inside the water meter pipe section. A square groove is provided on the upper part of the guide pipe. The guide pipe is made with a reduced diameter to increase the water flow velocity inside. Both the inlet and outlet ends are provided with large chamfers to make the water flow velocity change smoothly.

[0026] The plug secures the guide pipe inside the water meter pipe section from above. Specifically, the plug mates with the square groove on the upper part of the guide pipe to fix the guide pipe inside the water meter pipe section. A plug sealing ring is added between the plug and the guide pipe to ensure airtightness. In addition, a thermistor is installed inside the plug for measuring water temperature.

Claims

1. A dual-channel ultrasonic water meter pipe section structure, comprising a water meter pipe section, a guide pipe, an end cap, an end cap sealing ring, a pressure ring, an ultrasonic transducer, a transducer sealing ring, a plug, a plug sealing ring, and a thermistor, characterized in that: The inner diameter of the guide pipe is smaller than the inner diameter of the water meter pipe section; Both the inlet and outlet ends of the guide pipe are equipped with large chamfers; The upper end of the guide tube is provided with a square groove; The plug secures the guide pipe inside the water meter pipe section via a square groove located above the water meter pipe section and at the upper end of the guide pipe. A sealing ring is provided between the plug and the guide tube; The plug is equipped with a thermistor; The water meter pipe section is equipped with two sound channels, which are installed on opposite sides of the pipe and symmetrically placed along the direction of fluid flow. Each sound channel contains a transmitter and a receiver. The ultrasonic transducer is installed in two channels in the water meter pipe section. The ultrasonic transducer is fitted with a transducer sealing ring. The pressure ring presses the ultrasonic transducer tightly; The end cap seals the ultrasonic transducer inside the sound channel. The end cap is threadedly connected to the ultrasonic channel, and an end cap sealing ring is provided between the two.

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