Gas ultrasonic flowmeter

Abstract

The utility model provides a gas ultrasonic flowmeter which comprises a pipe section, a flow guide pipe, a transducer, a rectifier, a pipe section sealing ring, flanges, a flange check ring, a pressure sensor, a rotating shaft, a fixing base, a front shell, a rear shell, a shell sealing ring, a circuit board and a battery box. The rectifier is arranged in the flow guide pipe and is tightly matched with the flow guide pipe; the transducer is mounted in a mounting hole formed in the flow guide pipe, and a pipe section sealing ring is arranged between the pipe section and the flow guide pipe; the pressure sensor is arranged in the pipe section and is in threaded connection with the pipe section; the measuring pipe section is provided with the rectifier, so that the stability of a gas flow field is ensured, and the metering accuracy is ensured; the shell part can rotate, so that a user can conveniently check data of the flowmeter; and the pipe section sealing ring and the shell sealing ring are respectively arranged, so that the sealing performance of the gas flow channel and the sealing performance of the shell are ensured.

Description

Technical Field

[0001] The utility model relates to the field of flow measurement, in particular to a gas ultrasonic flow meter. Background Art

[0002] Ultrasonic flow measurement technology is a new type of flow measurement technology developed in recent decades. It uses the fluid velocity information carried by ultrasonic waves when propagating in the fluid to measure the fluid flow. It has the advantages of non-contact, high accuracy, wide measurement range and easy maintenance. It is particularly suitable for temporary pipelines, large-diameter pipelines and dangerous fluid flow measurement. In recent years, with the development of large-scale integrated circuits and digital signal processing technology, the research on new probe materials and processes, the research on sound channel configuration and fluid dynamics, ultrasonic flow measurement technology has made great progress, showing its strong technical advantages and becoming an important flow measurement method. Ultrasonic metering technology is also increasingly recognized by gas companies and gas users, and has been widely used in the metering of large-diameter and large-flow pipeline gas. Summary of the invention

[0003] The purpose of the utility model is to provide a gas ultrasonic flow meter, specifically a gas ultrasonic flow meter structure, wherein a measuring pipe section is provided with a rectifier to ensure the stability of the gas flow field, thereby ensuring the accuracy of measurement; the shell part can be rotated, so that users can view the flow meter data conveniently; a pipe section sealing ring and a shell sealing ring are respectively provided to ensure the sealing of the gas flow channel and the sealing of the shell.

[0004] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0005] The gas ultrasonic flow meter comprises a pipe section, a flow guide tube, a transducer, a rectifier, a pipe section sealing ring, a flange, a flange retaining ring, a pressure sensor, a rotating shaft, a fixing seat, a front housing, a rear housing, a housing sealing ring, a circuit board, and a battery box, and is characterized in that:

[0006] Flanges are welded on both sides of the pipe section;

[0007] The rectifier is placed inside the flow guide tube and is tightly matched with the flow guide tube;

[0008] A transducer mounting hole is provided in the flow guide tube;

[0009] The transducer is installed in the installation hole provided in the flow guide pipe;

[0010] A pipe section sealing ring is provided between the pipe section and the flow guide pipe;

[0011] The flange retaining ring is connected to the flange via threads;

[0012] The pressure sensor is arranged inside the pipe section and is connected to the pipe section via threads;

[0013] The rotating shaft is fixed to the lower shell through a fixing seat by bolts;

[0014] The fixing seat and the pipe section are fixed by screws;

[0015] The battery box is arranged inside the front housing;

[0016] The circuit board is arranged inside the front housing and is fixedly connected to the front housing by screws;

[0017] A housing sealing ring is provided between the front housing and the rear housing;

[0018] The front housing and the rear housing are fixedly connected via screws.

[0019] Beneficial effects of the utility model:

[0020] (1) In the utility model gas ultrasonic flowmeter, a rectifier is provided in the measuring pipe section to ensure the stability of the gas flow field, thereby ensuring the accuracy of ultrasonic measurement.

[0021] (2) The shell of the gas ultrasonic flow meter of the utility model can be rotated, so that the user can check the flow meter data conveniently.

[0022] (3) The gas ultrasonic flowmeter of the utility model is provided with a pipe section sealing ring and a shell sealing ring, respectively, to ensure the sealing of the pipe section gas and the sealing of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Attached Figure 1 This is a schematic diagram of the structure of the gas ultrasonic flowmeter of the utility model. DETAILED DESCRIPTION

[0024] The technical solution of the utility model is further described in detail below in conjunction with specific implementation methods and accompanying drawings.

[0025] As attached Figure 1 As shown: a gas ultrasonic flow meter, comprising a metering pipe section (12), a flow guide pipe (11), a transducer (8), a rectifier (7), a pipe section sealing ring (10), a flange (6), a flange retaining ring (9), a pressure sensor (13), a rotating shaft (14), a fixing seat (15), a front housing (5), a rear housing (1), a housing sealing ring (2), a circuit board (4), and a battery box (3).

[0026] Flanges are welded on both sides of the pipe section.

[0027] The rectifier is placed inside the flow guide tube and is tightly matched with the flow guide tube, thereby ensuring the stability of the gas flow field and improving the metering accuracy.

[0028] A transducer mounting hole is provided in the guide tube, and the transducer is installed in the mounting hole provided in the guide tube. Specifically, the ultrasonic transducer fixing seat and the ultrasonic transducer mounting hole provided in the flow channel are fixedly connected by snap fasteners to fix the ultrasonic transducer in the ultrasonic transducer mounting hole.

[0029] A pipe section sealing ring is provided between the pipe section and the flow guide pipe to ensure the sealing of the gas flow channel.

[0030] The flange retaining ring is connected to one side flange via threads.

[0031] The pressure sensor is arranged inside the pipe section and is connected to the pipe section via threads, and is used to test the pressure of the pipe section.

[0032] The rotating shaft is fixed to the lower shell through a fixing seat by bolts, and the shell can be rotated, so that the user can check the flow meter data conveniently.

[0033] The fixing seat and the pipe section are fixed by screws;

[0034] The battery box is arranged inside the front housing;

[0035] The circuit board is arranged inside the front housing and is fixedly connected to the front housing by screws;

[0036] A housing sealing ring is provided between the front housing and the rear housing;

[0037] The front housing and the rear housing are fixedly connected via screws.

[0038] The assembly process of the utility model is as follows:

[0039] Step 1: Weld flanges at both ends of the metering pipe section;

[0040] Step 2: Install the transducer and rectifier on the guide tube, wherein the transducer is installed in the installation hole of the guide tube, the rectifier is placed inside the guide tube, tightly fits with the guide tube, and the guide tube is assembled inside the metering tube section from one side of the metering tube section.

[0041] Step 3: Place a pipe section sealing ring between the pipe section and the guide pipe, and connect the flange retaining ring to the left flange with threads.

[0042] Step 4: The pressure sensor is threaded into the pipe section.

[0043] Step 5: The rotating shaft is fixed to the lower shell through the fixing seat with bolts, and the fixing seat and the pipe section are fixed with screws.

[0044] Step 6: Place the battery box and circuit board inside the rear housing.

[0045] Step 7: The front shell and the rear shell are fixedly connected with screws, and a shell sealing ring is installed in the middle.

Claims

1. A gas ultrasonic flow meter, comprising a pipe section, a flow guide tube, a transducer, a rectifier, a pipe section sealing ring, a flange, a flange retaining ring, a pressure sensor, a rotating shaft, a fixing seat, a front housing, a rear housing, a housing sealing ring, a circuit board, and a battery box, wherein: Flanges are welded on both sides of the pipe section; The rectifier is placed inside the flow guide tube and is tightly matched with the flow guide tube; A transducer mounting hole is provided in the flow guide tube; The transducer is installed in the installation hole provided in the flow guide pipe; A pipe section sealing ring is provided between the pipe section and the flow guide pipe; The flange retaining ring is connected to the flange via threads; The pressure sensor is arranged inside the pipe section and is connected to the pipe section via threads; The rotating shaft is fixed to the lower shell through a fixing seat by bolts; The fixing seat and the pipe section are fixed by screws; The battery box is arranged inside the front housing; The circuit board is arranged inside the front housing and is fixedly connected to the front housing by screws; A housing sealing ring is provided between the front housing and the rear housing; The front housing and the rear housing are fixedly connected via screws.

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