CN215491892U - Ultrasonic gas meter adopting Venturi tube structure - Google Patents
Ultrasonic gas meter adopting Venturi tube structure Download PDFInfo
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- CN215491892U CN215491892U CN202121871833.7U CN202121871833U CN215491892U CN 215491892 U CN215491892 U CN 215491892U CN 202121871833 U CN202121871833 U CN 202121871833U CN 215491892 U CN215491892 U CN 215491892U
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Abstract
The utility model discloses an ultrasonic gas meter adopting a Venturi tube structure, and relates to the technical field of ultrasonic gas meters, wherein a medium flow passage of the ultrasonic gas meter is provided with: the upstream flow section is an air inlet section of the ultrasonic gas meter; the intermediate flow section is a transition section of a fluid medium in the ultrasonic gas meter; the downstream flow section is a gas outlet section of the ultrasonic gas meter; the upstream transition part is a connection section between the upstream flow section and the intermediate flow section; the downstream transition part is a connection section between the intermediate flow section and the downstream flow section; the medium flow channel of the Venturi tube structure has the advantages that the medium flow channel with the original uniform inner diameter on the ultrasonic gas meter is changed into the medium flow channel of the Venturi tube structure by the aid of the upstream flow section, the middle flow section, the downstream flow section, the upstream transition part and the downstream transition part, the medium flow channel of the Venturi tube structure has rectification and flow stabilization effects on media in the flow channel when the medium flow channel is in actual use, flow speed of the media is improved, measuring accuracy is higher, and measuring range is wider.
Description
Technical Field
The utility model relates to the technical field of ultrasonic gas meters, in particular to an ultrasonic gas meter adopting a Venturi tube structure.
Background
At present, in an ultrasonic gas meter appearing in the market, a medium flow channel is a flow channel structure with a uniform inner diameter as shown in fig. 3, and the flow channel structure with the uniform inner diameter does not have rectification and flow stabilization functions in actual use, so that data of the ultrasonic gas meter has errors in measurement.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides an ultrasonic gas meter adopting a Venturi tube structure, and solves the problem that in the ultrasonic gas meter in the market, a medium flow channel is of a flow channel structure with a uniform inner diameter, and the flow channel structure with the uniform inner diameter does not have the functions of rectification and current stabilization during actual use, so that data of the ultrasonic gas meter has errors during measurement.
In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides an adopt ultrasonic wave gas table of venturi structure, includes ultrasonic wave gas table medium runner, ultrasonic wave gas table medium runner is provided with:
the upstream flow section is an air inlet section of the ultrasonic gas meter;
the intermediate flow section is a transition section of a fluid medium in the ultrasonic gas meter;
the downstream flow section is a gas outlet section of the ultrasonic gas meter;
the upstream transition part is a connection section between the upstream flow section and the intermediate flow section;
the downstream transition part is a connection section between the intermediate flow section and the downstream flow section;
the upstream flow section, the intermediate flow section, the downstream flow section, the upstream transition, and the downstream transition collectively form a venturi structure.
Furthermore, the ultrasonic gas meter also comprises an upstream ultrasonic transducer and a downstream ultrasonic transducer which are symmetrically arranged in the medium flow passage of the ultrasonic gas meter.
Furthermore, the upstream ultrasonic transducer and the downstream ultrasonic transducer are both positioned on the central axis of the medium flow passage of the ultrasonic gas meter.
Further, the upstream transition portion gradually shrinks from the upstream flow section to the intermediate flow section, and the downstream transition portion gradually enlarges from the intermediate flow section to the downstream flow section.
Further, the inner diameters of the upstream flow section and the downstream flow section are the same and are both larger than the inner diameter of the intermediate flow section.
Advantageous effects
The utility model provides an ultrasonic gas meter adopting a Venturi tube structure. Compared with the prior art, the method has the following beneficial effects:
the utility model provides an adopt ultrasonic wave gas table of venturi structure, with the medium runner of original unified internal diameter on the ultrasonic wave gas table, change into the medium runner of venturi structure, the medium runner of this venturi structure has rectification and stationary flow effect to the medium in the runner when in actual use, and has improved the velocity of flow of medium, and its measuring accuracy is higher, and measuring range is wideer.
Drawings
FIG. 1 is a cross-sectional view of an ultrasonic gas meter of the present invention;
FIG. 2 is a schematic structural diagram of a medium flow channel of an ultrasonic gas meter according to the present invention;
fig. 3 is a cross-sectional view of a prior art ultrasonic gas meter.
In the figure: 1. an ultrasonic gas meter medium flow channel; 11. an upstream flow section; 12. an intermediate flow section; 13. a downstream flow section; 14. an upstream transition portion; 15. a downstream transition portion; 2. an upstream ultrasonic transducer; 3. a downstream ultrasonic transducer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: an ultrasonic gas meter adopting a Venturi tube structure comprises an ultrasonic gas meter medium flow channel 1, an upstream ultrasonic transducer 2 and a downstream ultrasonic transducer 3 which are symmetrically arranged in the ultrasonic gas meter medium flow channel 1,
referring to fig. 2, the ultrasonic gas meter medium flow passage 1 is provided with:
the upstream flow section 11 is an air inlet section of the ultrasonic gas meter;
the intermediate flow section 12 is a transition section of a fluid medium in the ultrasonic gas meter;
the downstream flow section 13 is a gas outlet section of the ultrasonic gas meter;
an upstream transition part 14 which is a connection section between the upstream flow section 11 and the intermediate flow section 12;
a downstream transition part 15 which is a connection section between the intermediate flow section 12 and the downstream flow section 13;
the upstream flow section 11, the intermediate flow section 12, the downstream flow section 13, the upstream transition portion 14 and the downstream transition portion 15 jointly form a venturi tube structure, the upstream ultrasonic transducer 2 and the downstream ultrasonic transducer 3 are located on a central axis of the ultrasonic gas meter medium flow channel 1, the upstream transition portion 14 gradually shrinks from the upstream flow section 11 to the intermediate flow section 12, the downstream transition portion 15 gradually enlarges from the intermediate flow section 12 to the downstream flow section 13, and the inner diameters of the upstream flow section 11 and the downstream flow section 13 are the same and are larger than the inner diameter of the intermediate flow section 12.
In the present embodiment, the upstream ultrasonic transducer 2 and the downstream ultrasonic transducer 3 are both 40KHZ50W, and are common components in the art, and their own structural features, operation principles, and specific circuit structure electrically connected to the outside are all conventional, and will not be described in detail herein
When the ultrasonic gas meter medium flow passage is used, an original medium flow passage with the uniform inner diameter on the ultrasonic gas meter is changed into a Venturi tube medium flow passage structure formed by the upstream flow section 11, the middle flow section 12, the downstream flow section 13, the upstream transition part 14 and the downstream transition part 15 together, when the medium flow passage with the Venturi tube structure is actually used, the medium flow passage has the functions of rectifying and stabilizing the medium in the flow passage, the flow speed of the medium is improved, the measuring accuracy is higher, and the measuring range is wider.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides an adopt ultrasonic wave gas table of venturi structure, its characterized in that, includes ultrasonic wave gas table medium runner (1), ultrasonic wave gas table medium runner (1) is provided with:
the upstream flow section (11) is an air inlet section of the ultrasonic gas meter;
the intermediate flow section (12) is a transition section of a fluid medium inside the ultrasonic gas meter;
the downstream flow section (13) is a gas outlet section of the ultrasonic gas meter;
an upstream transition (14) being a junction between the upstream flow section (11) and the intermediate flow section (12);
a downstream transition (15) being a junction between the intermediate flow section (12) and the downstream flow section (13);
the upstream flow section (11), the intermediate flow section (12), the downstream flow section (13), the upstream transition (14) and the downstream transition (15) together form a venturi structure.
2. The ultrasonic gas meter adopting the Venturi tube structure according to claim 1, further comprising an upstream ultrasonic transducer (2) and a downstream ultrasonic transducer (3) which are symmetrically arranged in the medium flow channel (1) of the ultrasonic gas meter.
3. The ultrasonic gas meter adopting the Venturi tube structure as claimed in claim 2, wherein the upstream ultrasonic transducer (2) and the downstream ultrasonic transducer (3) are both located on the central axis of the medium flow channel (1) of the ultrasonic gas meter.
4. The ultrasonic gas meter with the venturi structure according to claim 1, wherein the upstream transition portion (14) gradually shrinks from the upstream flow section (11) to the intermediate flow section (12), and the downstream transition portion (15) gradually enlarges from the intermediate flow section (12) to the downstream flow section (13).
5. The ultrasonic gas meter adopting the venturi tube structure as claimed in claim 4, wherein the upstream flow section (11) and the downstream flow section (13) have the same inner diameter, and are both larger than the inner diameter of the intermediate flow section (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121871833.7U CN215491892U (en) | 2021-08-11 | 2021-08-11 | Ultrasonic gas meter adopting Venturi tube structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121871833.7U CN215491892U (en) | 2021-08-11 | 2021-08-11 | Ultrasonic gas meter adopting Venturi tube structure |
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| Publication Number | Publication Date |
|---|---|
| CN215491892U true CN215491892U (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121871833.7U Active CN215491892U (en) | 2021-08-11 | 2021-08-11 | Ultrasonic gas meter adopting Venturi tube structure |
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| CN (1) | CN215491892U (en) |
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2021
- 2021-08-11 CN CN202121871833.7U patent/CN215491892U/en active Active
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