Gas flow meter

Abstract

The utility model discloses a gas flow meter, which comprises a meter body provided with a medium channel for gas circulation; the sound channel assemblies are symmetrically distributed on the two sides of the medium channel in pairs; each sound channel assembly comprises a sound channel mounting part which forms a preset angle with the medium channel and is integrally formed, and an ultrasonic sensor which is inserted into the sound channel mounting part; according to the gas meter, the sound channel assemblies are arranged on the two sides of the medium channel in the meter body, gas data are collected, the sound channel installation parts and the medium channel are integrally formed, only the ultrasonic sensors need to be inserted into the corresponding sound channel installation parts, the sound channel installation parts and the medium channel are integrally formed, and the gas meter is convenient to use. No additional accessories are needed for assembly, and the structure is more compact and simpler.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas metering, and in particular relates to a gas flow meter. Background Art

[0002] Compared with traditional diaphragm metering instruments, ultrasonic metering instruments are very popular in the market because they have no mechanical transmission mechanism, simpler structure, high metering accuracy, and low pressure loss. The ultrasonic metering principle is to use an ultrasonic metering module to measure and calculate the average surface velocity V of the fluid passing through the metering module, and then multiply it by the module cross-sectional area S and the correction coefficient K to obtain the instantaneous flow rate Q through the flow channel.

[0003] The Chinese patent application number CN202122670849.8 discloses a hollow shaft turbine flowmeter, comprising a shell, an outer peripheral surface of the shell is provided with a mounting groove, a mounting seat is fixedly installed inside the mounting groove by a third screw, a connecting block is fixedly connected to the middle of the mounting seat, a movable component is provided on the top of the connecting block, the movable component includes a turntable and a mounting block, the mounting block is rotatably connected to the upper surface of the turntable, the inside of the mounting block is connected to a movable block by a connecting rod, and the top of the movable block is fixedly connected to an intelligent volume corrector.

[0004] As the applicant conducted further research, it was found that since the sound channel assembly in this technical solution adopts a modular design, multiple sound channel assemblies are combined with a connecting frame and embedded together into the side of the meter body to collect data on the gas in the medium channel. The structure is relatively complex and the assembly convenience is poor. Not only the installation and connection between the sound channel assembly and the connecting frame need to be considered, but also the coordination and installation with the meter body after the above-mentioned structure is combined. Due to its structural limitations, the assembly process requires multiple adjustments to ensure that the sound channel assembly is installed in place, which brings troubles to production and maintenance. Utility Model Content

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A gas flow meter, comprising:

[0007] The meter body has a medium channel for gas circulation;

[0008] at least one set of sound channel components distributed in pairs and symmetrically on both sides of the medium channel;

[0009] Each set of the sound channel components includes a sound channel mounting portion formed integrally with the medium channel and forming a preset angle, and an ultrasonic sensor inserted into the sound channel mounting portion;

[0010] A baffle is connected to the outer wall of the body and is used to shield the sound channel component.

[0011] Furthermore, the sound channel mounting portion has a boss partially extending toward the outside of the body, and a positioning block is provided on the inner side of the baffle to match the outer wall of the boss.

[0012] Furthermore, a sealing ring is provided at the connection between the baffle and the meter body.

[0013] Furthermore, a groove is provided on the outer wall of the body, and the sealing ring is placed in the groove.

[0014] Furthermore, a pressure sensor and a temperature sensor are provided in the meter body.

[0015] Furthermore, a corrector is connected to the upper end of the meter body, and the sensor, temperature sensor and sound channel component are all electrically connected to the corrector.

[0016] Furthermore, a rectifier is provided in the meter body, and the rectifier is provided at the air inlet end of the medium channel.

[0017] Furthermore, the upper end of the meter body is provided with a hanging ring.

[0018] Furthermore, the meter body is provided with a pressure port connected to the medium channel.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The meter body uses acoustic channel assemblies on both sides of the media channel to collect gas data. The acoustic channel mounting portion is integrally formed with the media channel, allowing the ultrasonic sensor to be simply inserted into the corresponding acoustic channel mounting portion, eliminating the need for additional accessories and resulting in a more compact and simple structure. Because the acoustic channel mounting portion is pre-set at an angle, the ultrasonic sensor does not require additional adjustment during flow meter production or subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of a gas flow meter embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the main structure of a gas flow meter embodiment of the present utility model;

[0023] Figure 3 This is a right side structural diagram of a gas flow meter embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of a half-section structure of the watch body of an embodiment of the utility model;

[0025] Figure 5 This is a schematic diagram of the full cross-section structure of the watch body of an embodiment of the utility model;

[0026] The reference numerals in the drawings of the specification include:

[0027] Meter body 1, medium channel 10, lifting ring 11, pressure tapping port 12, sound channel mounting portion 20, boss 21, ultrasonic sensor 22, sealing ring 30, groove 31, baffle 4, positioning block 40, pressure sensor 50, temperature sensor 51, rectifier 6, corrector 7. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0029] The accompanying drawings are for illustrative purposes only and are schematic rather than physical representations, and should not be construed as limiting this patent. To better illustrate the embodiments of the present invention, certain components of the accompanying drawings may be omitted, enlarged, or reduced in size, and do not represent the dimensions of actual products. It is understandable to those skilled in the art that certain well-known structures and their descriptions may be omitted from the accompanying drawings. Identical or similar reference numerals in the accompanying drawings of the embodiments of the present invention correspond to identical or similar components. In the description of the present invention, it should be understood that the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art will understand the specific meanings of the above terms based on specific circumstances.

[0030] like Figure 1 - Figure 5 As shown, a gas flow meter of the present invention comprises a meter body 1, an acoustic channel assembly and a baffle 4 connected to the outer wall of the meter body 1;

[0031] The meter body 1 has a medium channel 10 for gas circulation;

[0032] At least one group of sound channel components is provided, and each group of sound channel components consists of two units in a pair, symmetrically distributed on both sides of the medium channel 10;

[0033] Each set of sound channel components includes a sound channel mounting portion 20 formed integrally with the medium channel 10 and forming a preset angle, and an ultrasonic sensor 22 inserted into the sound channel mounting portion 20;

[0034] The baffle 4 is used to shield the sound channel components.

[0035] The meter body 1 incorporates acoustic channel assemblies on either side of the medium channel 10 to collect gas data. The acoustic channel mounting portion 20 is integrally formed with the medium channel 10, allowing the ultrasonic sensor 22 to be simply inserted into the corresponding acoustic channel mounting portion 20, eliminating the need for additional accessories and resulting in a more compact and simple structure. Because the acoustic channel mounting portion 20 is pre-set at an angle, the ultrasonic sensor 22 does not require additional adjustment during meter production or subsequent maintenance.

[0036] like Figure 5 As shown, the sound channel mounting portion 20 has a boss 21 partially extending toward the outside of the body 1 .

[0037] Baffle 4, as a surface finish for the watch body 1, not only serves an aesthetic purpose but also protects the internal sound channel components. When installing baffle 4, it can be bolted to the side of the watch body 1. During installation, threaded holes need to be aligned. A positioning block 40 is located inside baffle 4, mating with the outer wall of boss 21. When baffle 4 approaches sound channel mounting portion 20, boss 21 guides positioning block 40, ensuring that the threaded holes used for fastening are aligned when baffle 4 is fully attached to the side of watch body 1. This facilitates installation of baffle 4.

[0038] Since the sound channel mounting portion 20 is at a certain angle to the medium channel 10 and the protrusion is relatively inclined, in order to guide and position the baffle 4, the cross section of the positioning block 40 is set to be conical or triangular.

[0039] In order to enhance the airtightness and prevent external water vapor from entering the interior of the meter body 1, a sealing ring 30 is provided at the connection between the baffle 4 and the meter body 1.

[0040] A groove 31 is formed on the outer wall of the watch body 1 , and the sealing ring 30 is placed in the groove 31 .

[0041] like Figure 1 、 Figure 4 As shown, a pressure sensor 50 and a temperature sensor 51 are provided in the meter body 1 .

[0042] like Figure 1-Figure 3 As shown, the upper end of the meter body 1 is connected to the corrector 7 , and the sensor, the temperature sensor 51 and the sound channel component are all electrically connected to the corrector 7 .

[0043] The volume corrector 7 is primarily used for online monitoring of gas temperature, pressure, flow, and other signals, automatically correcting the compressibility factor and automatically tracking and compensating the flow rate. It is specifically designed as a high-precision, intelligent secondary instrument for flow metering. It utilizes a high-precision digital temperature sensor 51 and a digital pressure sensor 50, with integrated temperature and pressure correction capabilities. This instrument converts the operating volume flow rate measured by the flow meter into the standard volume flow rate. It is an ideal companion instrument for gas flow meters in industries such as city gas, petroleum, chemical, and metallurgy.

[0044] like Figure 1 As shown, a rectifier 6 is further provided in the meter body 1 , and the rectifier 6 is provided at the air inlet end of the medium channel 10 .

[0045] After the gas medium entering the flow meter is rectified by the rectifier 6, the pulsating flow energy in the fluid is completely dispersed, so that the fluid transitions from a turbulent state to a laminar state, eliminating the influence of the pulsating flow, thereby effectively improving the ultrasonic flow meter's detection effect on the fluid.

[0046] In addition, the upper end of the meter body 1 is provided with a lifting ring 11. When the meter body 1 is installed or transported, the meter body 1 assembly can be lifted by connecting to the lifting ring 11 using lifting-related equipment.

[0047] The meter body 1 is provided with a pressure port 12 connected to the medium channel 10. The provision of the pressure port 12 facilitates the measurement supervision unit to install the gas pressure parameters on site without having to disassemble the entire meter.

[0048] The above are only embodiments of the present invention. Common knowledge such as the known specific structures and characteristics in the scheme is not described in detail here. Ordinary technicians in the relevant field are aware of all common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the relevant field can improve and implement this scheme based on their own abilities under the guidance of this application. Some typical known structures or methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the utility model, they can also make several variations and improvements, which should also be regarded as the scope of protection of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A gas flow meter, characterized in that: include: The meter body has a medium channel for gas circulation; at least one set of sound channel components distributed in pairs and symmetrically on both sides of the medium channel; Each set of the sound channel components includes a sound channel mounting portion formed integrally with the medium channel and forming a preset angle, and an ultrasonic sensor inserted into the sound channel mounting portion; A baffle is connected to the outer wall of the body and is used to shield the sound channel component.

2. A gas flow meter according to claim 1, characterized in that: The sound channel mounting portion has a boss partially extending toward the outside of the body, and a positioning block matched with the outer wall of the boss is provided on the inner side of the baffle.

3. A gas flow meter according to claim 1 or 2, characterized in that: A sealing ring is provided at the connection between the baffle and the meter body.

4. A gas flow meter according to claim 3, characterized in that: The outer wall of the body is provided with a groove, and the sealing ring is placed in the groove.

5. A gas flow meter according to claim 1, characterized in that: The meter body is provided with a pressure sensor and a temperature sensor.

6. A gas flow meter according to claim 5, characterized in that: The upper end of the meter body is connected with a corrector, and the sensor, the temperature sensor and the sound channel component are all electrically connected to the corrector.

7. A gas flow meter according to claim 1 or 2, characterized in that: A rectifier is also provided in the meter body, and the rectifier is provided at the air inlet end of the medium channel.

8. A gas flow meter according to claim 7, characterized in that: The upper end of the meter body is provided with a hanging ring.

9. A gas flow meter according to claim 8, characterized in that: The meter body is provided with a pressure port communicated with the medium channel.

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