CN215573152U

CN215573152U - Metering component for ultrasonic gas meter and gas meter with same

Info

Publication number: CN215573152U
Application number: CN202123152279.XU
Authority: CN
Inventors: 王贵周; 郭琪; 薛亭亭; 窦金忠; 姜棋
Original assignee: SHANDONG START MEASUREMENT CONTROL EQUIPMENT CO Ltd
Current assignee: SHANDONG START MEASUREMENT CONTROL EQUIPMENT CO Ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-01-18
Anticipated expiration: 2031-12-16

Abstract

The utility model discloses a metering component for an ultrasonic gas meter and a gas meter with the same, and relates to the technical field of gas metering equipment, wherein the metering component comprises a gas flow channel, wherein one end of the gas flow channel is provided with a gas inlet, and the other end of the gas flow channel is provided with a gas outlet; a first rectifying part is arranged on the inner side of the gas outlet, and a second rectifying part is arranged on the inner side of the gas inlet; and an ultrasonic sensor is arranged on the flow channel main body of the gas flow channel. The metering component for the ultrasonic gas meter and the gas meter with the metering component solve the technical problems of poor rectifying effect, low metering precision and the like of the ultrasonic gas meter in the prior art, and have the advantages of good rectifying effect, high metering precision, easiness in installation and good technological consistency.

Description

Metering component for ultrasonic gas meter and gas meter with same

Technical Field

The utility model relates to the technical field of gas metering equipment, in particular to a metering component for an ultrasonic gas meter and a gas meter with the metering component.

Background

Natural gas has become the first choice of domestic energy structure as a clean, efficient high-quality energy, and with the wide use of natural gas, how to realize fair measurement as the gas meter that city natural gas consumer trade measurement used is especially important. Along with the construction and popularization of gas transmission pipelines, gas meters emerge like bamboo shoots in spring after rain, from mechanical type to electronic type, from traditional diaphragm meters to full-electronic ultrasonic gas meters, new concepts and new technologies continue to emerge, the accuracy and the application range of various flow meters are also continuously improved, and the ultrasonic gas meters gradually move from the industrial field to the household field due to the advantages of advanced technology, easy intellectualization and the like. Particularly, in recent years, ultrasonic gas meters are emerging at a brand-new corner in the gas meter market with a strong potential, but the ultrasonic gas meters also belong to one type of speed type flow meters, are sensitive to the influence of a flow field in a measuring pipeline, influence the measuring performance of the ultrasonic gas meters, and have high installation requirements on the positions of an ultrasonic transducer and a flow channel structure.

The ultrasonic gas meter has the advantages that the installation mode for household and commercial ultrasonic gas meters at present requires high dimensional accuracy, the traditional ultrasonic gas meters are designed into a flow channel structure, a rectangular sheet type rectifier is adopted, a square flow channel is divided into a plurality of layers of flat flow channels, the ultrasonic gas meters are not easy to install and position, the process consistency is poor, the production efficiency is low, meanwhile, the rectification effect is poor, the airflow disturbance in the flow channel is large, and the measurement accuracy and the stability are poor.

Disclosure of Invention

In view of the above defects, the present invention provides a metering component for an ultrasonic gas meter and a gas meter provided with the metering component, and the metering component for the ultrasonic gas meter and the gas meter provided with the metering component have the advantages of good rectification effect, high metering precision, easy installation and good process consistency.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

a metering component for an ultrasonic gas meter comprises a gas flow channel, wherein one end of the gas flow channel is provided with a gas inlet, and the other end of the gas flow channel is provided with a gas outlet; a first rectifying part is arranged on the inner side of the gas outlet, and a second rectifying part is arranged on the inner side of the gas inlet; and an ultrasonic sensor is arranged on the flow channel main body of the gas flow channel.

The gas flow channel comprises an expanding part communicated with the gas inlet, and the expanding part is communicated with the flow channel main body.

The first rectifying component is of a plate-shaped structure, an opening area is formed in the center of the first rectifying component, and a plurality of through holes for gas to pass through are formed in the opening area.

Wherein the perforated region is disposed opposite the gas inlet, and the shape and size of the perforated region conform to the shape and size of a radial cross-section of the gas inlet.

Wherein the first rectifying member is hermetically connected to the gas outlet.

The second rectifying component comprises a cylindrical shell, a plurality of airflow channels are arranged in the shell, each airflow channel is cylindrical, and the axial direction of each airflow channel is consistent with the axial direction of the shell.

Wherein the radial cross section of the gas flow channel is circular.

The first rectifying component is of a circular plate-shaped structure, and the second rectifying component is of a circular cylindrical structure.

Wherein, the ultrasonic sensor is a correlation ultrasonic sensor.

A gas meter comprises a shell, wherein the shell is internally provided with a metering component for the ultrasonic gas meter.

After the technical scheme is adopted, the utility model has the beneficial effects that:

the metering component for the ultrasonic gas meter comprises a gas flow channel, wherein one end of the gas flow channel is provided with a gas inlet, and the other end of the gas flow channel is provided with a gas outlet; the inner side of the gas outlet is provided with a first rectifying component which is connected with the gas outlet in a sealing way; the flow channel main body of the gas flow channel is provided with an ultrasonic sensor. The metering component for the ultrasonic gas meter rectifies gas at the gas inlet so as to enable the gas flow to be more stable, and meanwhile, the rectifying component is arranged at the gas outlet so as to slow down the speed of the gas flow flowing out and further stabilize the speed of the gas flow in the gas flow channel, so that the gas flow inlet and the gas flow outlet in the gas flow channel are all stable, the stability of the whole gas flow is improved, the ultrasonic sensor can accurately measure the gas flow, and the metering precision of the gas meter is improved. Meanwhile, the metering component for the ultrasonic gas meter has the advantages of simple structure, easiness in installation and positioning, good technological consistency and high production efficiency.

Because the gas meter is provided with the metering component for the ultrasonic gas meter, the gas meter has the advantages of good rectifying effect, high metering precision, easiness in installation, good technological consistency and high production efficiency.

In conclusion, the metering component for the ultrasonic gas meter and the gas meter with the metering component solve the technical problems of poor rectification effect, low metering precision and the like of the ultrasonic gas meter in the prior art, and have the advantages of good rectification effect, high metering precision, easiness in installation and good technological consistency.

Drawings

FIG. 1 is a schematic structural diagram of a metering component for an ultrasonic gas meter according to the present invention;

FIG. 2 is a schematic view of the first fairing section of FIG. 1;

FIG. 3 is a schematic diagram of the second fairing section of FIG. 1;

in the figure: 10. a gas flow channel, 12, a gas inlet, 14, an expanded diameter part, 16, a flow channel main body, 18, a gas outlet, 20, a second rectifying part, 22, a shell, 24, a gas flow channel, 30, a first rectifying part, 32, an opening area, 34, a through hole, 40 and an ultrasonic sensor.

Detailed Description

The utility model is further illustrated below with reference to the figures and examples.

All the orientations referred to in the present specification are based on the orientations shown in the drawings, and only represent relative positional relationships, not absolute positional relationships.

As shown in fig. 1, a metering component for an ultrasonic gas meter includes a gas flow passage 10, and in the present embodiment, it is preferable that a radial cross section of the gas flow passage 10 is circular, and the gas flow passage 10 is designed to be circular, so that rectification is more convenient, and the metering component is beneficial to improving metering accuracy, and meanwhile, installation and positioning are easy, so that manufacturability and consistency can be improved, and production efficiency is improved.

As shown in fig. 1, the gas flow channel 10 is provided with a gas inlet 12 at one end and a gas outlet 18 at the other end. The gas flow path 10 includes an enlarged diameter portion 14 communicating with the gas inlet 12, and the enlarged diameter portion 14 communicates with a flow path main body 16. The expanding part 14 is a cone-shaped structure, the small opening end of the expanding part is connected with the gas inlet 12, the large opening end of the expanding part is connected with the flow passage main body 16, namely, the diameter of the gas inlet 12 is smaller than that of the flow passage main body 16, and the diameter of the gas outlet 18 is consistent with that of the flow passage main body 16. After entering through the gas inlet 12, the gas enters into a larger space through the expanding part 14, and the enlarged space has a buffering effect on the gas flow, so that the gas flow is distributed more uniformly, the stability of the gas flow can be effectively improved, and the improvement of the metering precision is facilitated.

As shown in fig. 1 and 2, a first rectifying member 30 is provided inside the gas outlet 18, and the first rectifying member 30 has a circular plate-like structure. The first rectifying member 30 has an opening region 32 at a central position, and the opening region 32 has a plurality of through holes 34 through which gas passes. In the present embodiment, the through holes 34 are preferably circular holes and are distributed over the entire open hole region 32, and it should be noted that the through holes 34 are circular holes, which is a preferred embodiment of the present embodiment, and in practical application, the through holes are not limited to circular holes, and other holes with regular shapes may be used, or holes with irregular shapes may be used, and the present embodiment is not limited thereto, as long as gas can pass through the through holes.

As shown in fig. 1 and 2 together, the present embodiment preferably has the perforated region 32 disposed opposite the gas inlet 12, the shape and size of the perforated region 32 corresponding to the shape and size of the radial cross-section of the gas inlet 12, i.e. the perforated region 32 is a circular region and has a diameter equal to the diameter of the gas inlet 12. In the present embodiment, the first rectifying member 30 is preferably hermetically connected to the gas outlet 18, that is, the outer surface of the first rectifying member 30 is hermetically sealed from the inner surface of the gas outlet 18. In this embodiment, the first rectifying member 30 and the gas outlet 18 are preferably hermetically connected by a fastener, but may also be hermetically connected by interference fit, welding, or adhesion, and the embodiment is not limited herein. The first rectifying member 30 and the gas outlet 18 are sealed, so that a relatively static gas flow is formed around the inner side of the gas flow passage 10, which is beneficial to increasing the reliability of ultrasonic wave propagation and improving the metering precision.

As shown in fig. 1 and 3, a second rectifying member 20 is provided inside the gas inlet 12, and the second rectifying member 20 has a circular cylindrical structure. The second rectifying member 20 includes a cylindrical housing 22, and a plurality of air flow passages 24 are arranged in the housing 22, and in the present embodiment, the air flow passages 24 preferably fill the entire inner cavity of the housing 22. In the present embodiment, each of the airflow passages 24 is preferably cylindrical, and more preferably, each of the airflow passages 24 is cylindrical, and the axial direction of each of the airflow passages 24 coincides with the axial direction of the housing 22, that is, the axis of each of the airflow passages 24 is parallel to the axis of the housing 22. It should be noted that, the air flow channel 24 is a cylindrical shape, which is a preferable embodiment of the present embodiment, and in practical application, the air flow channel is not limited to a cylindrical shape, and may be a polygonal cylindrical shape, such as a square cylinder, a pentagonal cylinder, or a hexagonal cylinder, and may also be an irregular cylindrical shape.

As shown in fig. 1, the flow path main body 16 of the gas flow path 10 is provided with an ultrasonic sensor 40, and in the present embodiment, the ultrasonic sensor 40 is preferably a correlation ultrasonic sensor. The opposite-emitting ultrasonic sensor can shorten the ultrasonic emitting stroke, and is favorable for increasing the metering precision.

As shown in fig. 1, the metering component for the ultrasonic gas meter of the present invention has rectifying components at both the gas inlet 12 and the gas outlet 18, and the gas flow channel 10 expands in diameter after the gas inlet 12, and the gas enters a larger space after being rectified by the second rectifying component 20, so that the gas is distributed more uniformly and the flow rate is more stable, and meanwhile, the measurement stroke is reduced by using the correlation ultrasonic sensor, and the first rectifying component 30 arranged at the gas outlet 18 can reduce the flow rate of the gas, further stabilize the gas flow in the gas flow channel 10, so that the stability of the gas flow is improved, and further improve the metering accuracy of the gas meter.

Example two:

a gas meter comprises a shell, wherein a metering component for an ultrasonic gas meter is arranged in the shell.

The gas meter has the advantages of good rectification effect, high metering precision, easy installation and positioning, good process consistency and high production efficiency.

It should be noted that the names with reference numbers (the first rectifying component and the second rectifying component) referred to in this specification are only for distinguishing technical features, and do not represent a positional relationship, an operation order, and the like between the two.

The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without creative efforts from the above-described conception, and fall within the scope of the present invention.

Claims

1. The metering component for the ultrasonic gas meter comprises a gas flow channel (10), wherein one end of the gas flow channel (10) is provided with a gas inlet (12), and the other end of the gas flow channel is provided with a gas outlet (18); the gas flow regulating device is characterized in that a first flow regulating component (30) is arranged on the inner side of the gas outlet (18), and a second flow regulating component (20) is arranged on the inner side of the gas inlet (12); an ultrasonic sensor (40) is arranged on the flow channel main body (16) of the gas flow channel (10).

2. The metering member for an ultrasonic gas meter according to claim 1, wherein the gas flow path (10) includes an enlarged diameter portion (14) communicating with the gas inlet (12), and the enlarged diameter portion (14) communicates with the flow path body (16).

3. The metering component for the ultrasonic gas meter according to claim 2, wherein the first flow regulating member (30) has a plate-like structure, an open region (32) is formed at a central position of the first flow regulating member (30), and a plurality of through holes (34) through which gas passes are formed in the open region (32).

4. The metering member for an ultrasonic gas meter according to claim 3, wherein the perforated region (32) is provided opposite to the gas inlet (12), and a shape and a size of the perforated region (32) conform to a shape and a size of a radial cross section of the gas inlet (12).

5. The metering component for the ultrasonic gas meter according to claim 4, wherein the first rectifying component (30) is hermetically connected to the gas outlet (18).

6. The metering component for the ultrasonic gas meter according to claim 3, wherein the second rectifying component (20) includes a cylindrical housing (22), a plurality of gas flow passages (24) are arranged in the housing (22), each of the gas flow passages (24) has a cylindrical shape, and an axial direction of each of the gas flow passages (24) coincides with an axial direction of the housing (22).

7. The metering member for an ultrasonic gas meter according to claim 6, wherein a radial cross section of the gas flow passage (10) is circular.

8. The metering member for an ultrasonic gas meter according to claim 7, wherein the first rectifying member (30) has a circular plate-like structure, and the second rectifying member (20) has a circular cylindrical structure.

9. The metering component for an ultrasonic gas meter according to claim 1, wherein the ultrasonic sensor (40) is a correlation ultrasonic sensor.

10. The gas meter comprises a housing, and is characterized in that a metering component for the ultrasonic gas meter according to any one of claims 1 to 9 is arranged in the housing.