Compact pipe-type ultrasonic flow meter
By welding the stainless steel measuring tube to the ultrasonic detector and designing the flange, the problems of impurity accumulation and inconvenient installation in existing ultrasonic flow meters are solved, achieving efficient installation and cleaning and reducing the risk of pollution.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI LISEN MEASUREMENT & CONTROL TECH CO LTD
- Filing Date
- 2025-10-11
- Publication Date
- 2026-07-14
AI Technical Summary
Existing ultrasonic flow meters are prone to accumulating impurities during use, have low installation efficiency and inconvenient connection methods, and their threaded structure is prone to contamination.
The ultrasonic detector is welded to a stainless steel measuring tube, and features a flange design and sealing ring structure. The outer side of the ultrasonic detector is smooth and chamfered to reduce blind spots. Combined with a mounting base and fixed base, the threaded structure is eliminated.
It improves installation stability, reduces impurity accumulation, facilitates cleaning, and enhances connection effectiveness and the equipment's anti-pollution capabilities.
Smart Images

Figure CN224499595U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ultrasonic flow meters, specifically a compact pipeline ultrasonic flow meter. Background Technology
[0002] An ultrasonic flow meter is a type of flow meter developed based on the principle that the propagation speed of ultrasonic waves in a flowing medium is equal to the vector sum of the average flow velocity of the measured medium and the velocity of the sound wave in a stationary medium. It mainly consists of a transducer and a converter.
[0003] In the prior art, such as the ultrasonic gas flow meter body disclosed in Chinese Publication No. CN118362175B, it also includes:
[0004] The connecting seat has a mounting groove on its top for mounting the body of the ultrasonic gas flow meter.
[0005] The inlet and outlet connecting pipes are symmetrically fixed to the inner walls of both sides of the mounting groove. The ends of the inlet and outlet connecting pipes that are far apart from each other extend outward and are used for connecting the pipes.
[0006] The sliding box is sealed and slidably connected in the mounting groove for the installation of the gas ultrasonic flow meter body. The sliding box has two symmetrical vent holes on the side away from each other. The air inlet and air outlet of the gas ultrasonic flow meter body are respectively connected to one end of the air inlet connecting pipe and the air outlet connecting pipe through the two vent holes, forming a closed gas delivery pipeline. The gas flow rate is monitored through the gas ultrasonic flow meter body during the delivery process.
[0007] The flow calibration mechanism, located inside the connecting seat and sliding box, works in conjunction with the gas ultrasonic flow meter body to calibrate the flow rate of the gas ultrasonic flow meter body.
[0008] However, in the existing technology, the gauge head is usually connected separately from the valve body. During use, it needs to be installed, which is inefficient. In addition, in the existing connection method, there is a large gap between the gauge head and the valve body. After long-term use, impurities are easy to accumulate under the gauge head and are not easy to clean. Furthermore, the valve body connection in the existing technology also adopts a threaded structure, which can easily cause impurities to accumulate inside the valve body, causing unnecessary pollution. Summary of the Invention
[0009] Therefore, the purpose of this utility model is to provide a compact pipeline ultrasonic flow meter to solve the technical problems of existing flow meters being prone to accumulating impurities on the outside and being inconvenient to install.
[0010] To achieve the above objectives, this utility model provides the following technical solution: a compact pipeline ultrasonic flow meter, comprising a stainless steel measuring tube, flanges installed at both ends of the stainless steel measuring tube, an ultrasonic detector installed at the middle of the top of the stainless steel measuring tube, the ultrasonic detector being welded to the stainless steel measuring tube, the outer side of the ultrasonic detector being smooth, and the edges and corners of the ultrasonic detector being chamfered, the interior of the stainless steel measuring tube being smooth, without any protruding structural parts.
[0011] By adopting the above technical solution, the ultrasonic detector can be easily installed on the stainless steel measuring tube, thereby improving the installation stability.
[0012] The present invention is further configured such that a groove is provided on the outer wall of the flange, a sealing ring is connected inside the groove of the flange, the end face of the flange away from the ultrasonic detector is a plane, and the end face of the flange close to the ultrasonic detector is a slope.
[0013] Preferably, it can be connected to other external equipment via a flange, thereby improving the connection effect and facilitating the disassembly of the flow meter.
[0014] The present invention is further configured such that a mounting base is provided at the top of the stainless steel measuring tube, the mounting base having a structure that is larger at the top and smaller at the bottom, the ultrasonic detector is fixed at the top of the mounting base, and the width of the top of the mounting base is greater than the diameter of the stainless steel measuring tube.
[0015] Preferably, the ultrasonic detector can be limited by the mounting base, which improves the installation effect.
[0016] The present invention is further configured such that the bottom end of the ultrasonic detector is fixedly connected to the mounting base, and the bottom end of the ultrasonic detector matches the size of the top end of the mounting base, and an LCD screen is provided on the top end of the ultrasonic detector.
[0017] Preferably, it allows for convenient observation of the test results.
[0018] The present invention is further configured such that the outer top of the stainless steel measuring tube is directly welded to the ultrasonic detector, and both sides of the ultrasonic detector are equipped with fixed bases, and the fixed bases are tightly attached to the outer wall of the stainless steel measuring tube. The outer wall of the fixed base is provided with a gentle slope, and the gentle slope is connected to the ultrasonic detector.
[0019] Preferably, the volume of the ultrasonic reducer can be further reduced.
[0020] The present invention is further configured such that a power interface is connected to the side of the ultrasonic detector, and the power interface is connected to an external operating device via a wire.
[0021] Preferably, it facilitates the transmission of the detection results to the outside world.
[0022] In summary, the present invention has the following main advantages:
[0023] This invention utilizes an ultrasonic detector and a stainless steel measuring tube to fix the ultrasonic detector on top of the stainless steel measuring tube. By welding, the protruding structure on the outside of the ultrasonic detector is reduced, thereby reducing dead corners on the outside of the equipment, reducing contamination on the outside of the ultrasonic detector, and facilitating subsequent cleaning.
[0024] This invention employs a smooth ultrasonic detector, which effectively allows external liquids to slide down from above the detector during use, reducing liquid accumulation. Furthermore, by using ultrasonic detector housings of different sizes, it can be effectively adapted to installation on different stainless steel measuring tubes, enabling the detection of liquids with varying flow rates and concentrations with different effects. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the structure of this utility model;
[0026] Figure 2 This is a schematic diagram of the internal structure of the side pipe of this utility model;
[0027] Figure 3 This is a schematic diagram of the structure of the second embodiment of the present utility model;
[0028] Figure 4 This is a schematic diagram of the existing technology.
[0029] Explanation of reference numerals in the attached figures:
[0030] 1. Stainless steel measuring tube; 101. Flange; 102. Mounting base; 2. Ultrasonic detector; 201. LCD screen; 202. Power connection port; 203. Fixed base; 204. Sloping surface. Detailed Implementation
[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0032] The embodiments of this utility model will be described below based on its overall structure.
[0033] Example 1, please refer to Figures 1 to 2A compact in-line ultrasonic flow meter includes a stainless steel measuring tube 1. Flanges 101 are installed at both ends of the stainless steel measuring tube 1. An ultrasonic detector 2 is installed at the middle of the top of the stainless steel measuring tube 1. A mounting base 102 is provided at the top of the stainless steel measuring tube 1, with a structure that is wider at the top and narrower at the bottom. The ultrasonic detector 2 is fixed to the top of the mounting base 102, and the width of the top of the mounting base 102 is greater than the diameter of the stainless steel measuring tube 1. The bottom end of the ultrasonic detector 2 is fixedly connected to the mounting base 102, and the size of the bottom end of the ultrasonic detector 2 matches that of the top end of the mounting base 102. An LCD screen 201 is provided at the top of the ultrasonic detector 2. The ultrasonic detector 2 is welded to the stainless steel measuring tube 1. The outer surface of the ultrasonic detector 2 is smooth, and all edges and corners of the ultrasonic detector 2 are chamfered, which effectively reduces the accumulation of impurities on the outer surface of the ultrasonic detector 2 and avoids bolt thread structures, facilitating cleaning. The interior of the stainless steel measuring tube 1 is smooth and has no protruding structural parts.
[0034] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 The outer wall of flange 101 has a groove, and a sealing ring is connected inside the groove of flange 101. The end face of flange 101 away from ultrasonic detector 2 is flat, and the end face of flange 101 close to ultrasonic detector 2 is inclined. This allows for quick installation or replacement of the sensor, avoids dead corners for hygiene, and facilitates cleaning and sterilization, thereby improving the efficiency and reliability of the process.
[0035] Example 2, please refer to Figure 3 This is the second embodiment of the present application, which differs in the installation method of the ultrasonic detector 2. Specifically, the outer top of the stainless steel measuring tube 1 is directly welded to the ultrasonic detector 2. Fixed bases 203 are installed on both sides of the ultrasonic detector 2, and the fixed bases 203 are tightly attached to the outer wall of the stainless steel measuring tube 1. A gentle slope 204 is provided on the outer wall of the fixed base 203, and the gentle slope 204 is connected to the ultrasonic detector 2. A power interface 202 is connected to the side of the ultrasonic detector 2, and the power interface 202 is connected to an external operating device through a wire. By eliminating the display screen structure, the size of the ultrasonic detector 2 is further reduced. Moreover, the gentle slope 204 not only facilitates the installation of the ultrasonic detector 2, but also facilitates the flow of liquid from the ultrasonic detector 2.
[0036] In use, this invention requires initial installation. The ultrasonic detector 2 is mounted on the stainless steel measuring tube 1, and then fixed to the outside of the stainless steel measuring tube 1 by welding. This method effectively reduces the excess protruding structure on the outside of the ultrasonic detector 2, thereby reducing its protruding volume and corners, preventing impurities from accumulating in dead corners, reducing impurity accumulation, and facilitating cleaning of the ultrasonic detector 2. Furthermore, this application does not have corresponding probes or other structures inside the stainless steel measuring tube 1. By using ultrasonic waves to detect and measure the liquid flow inside the pipe, it effectively reduces obstruction to the liquid and reduces contamination of the ultrasonic detector 2.
[0037] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.
Claims
1. A compact in-line ultrasonic flow meter, comprising a stainless steel measuring tube (1), characterized in that: Flanges (101) are installed at both ends of the stainless steel measuring tube (1). An ultrasonic detector (2) is installed at the middle of the top of the stainless steel measuring tube (1). The ultrasonic detector (2) is welded to the stainless steel measuring tube (1). The outer side of the ultrasonic detector (2) is smooth, and the corners of the ultrasonic detector (2) are all chamfered. The inside of the stainless steel measuring tube (1) is smooth and has no protruding structural parts.
2. A compact in-line ultrasonic flow meter according to claim 1, characterized in that: The outer wall of the flange (101) is provided with a groove, and a sealing ring is connected inside the groove of the flange (101). The end face of the flange (101) away from the ultrasonic detector (2) is a flat surface, and the end face of the flange (101) close to the ultrasonic detector (2) is a slope.
3. A compact in-line ultrasonic flow meter according to claim 1, characterized in that: The stainless steel measuring tube (1) has a mounting base (102) at its top end. The mounting base (102) has a structure that is larger at the top and smaller at the bottom. The ultrasonic detector (2) is fixed at the top end of the mounting base (102). The width of the top end of the mounting base (102) is greater than the diameter of the stainless steel measuring tube (1).
4. A compact in-line ultrasonic flow meter according to claim 3, characterized in that: The bottom end of the ultrasonic detector (2) is fixedly connected to the mounting base (102), and the bottom end of the ultrasonic detector (2) matches the size of the top end of the mounting base (102). The top end of the ultrasonic detector (2) is provided with an LCD screen (201).
5. A compact in-line ultrasonic flow meter according to claim 1, characterized in that: The outer top of the stainless steel measuring tube (1) is directly welded to the ultrasonic detector (2). Both sides of the ultrasonic detector (2) are equipped with fixed bases (203), and the fixed bases (203) are tightly attached to the outer wall of the stainless steel measuring tube (1). The outer wall of the fixed base (203) is provided with a gentle slope (204), and the gentle slope (204) is connected to the ultrasonic detector (2).
6. A compact in-line ultrasonic flow meter according to claim 5, characterized in that: The ultrasonic detector (2) has a power port (202) connected to its side, and the power port (202) is connected to an external operating device through a wire.