CN214951566U

CN214951566U - Reflecting surface improved ultrasonic flowmeter

Info

Publication number: CN214951566U
Application number: CN202121161295.2U
Authority: CN
Inventors: 张博鸿; 姜超; 魏秦枫
Original assignee: Shanghai Yinuo Instrument Co Ltd
Current assignee: Shanghai Yinuo Instrument Co Ltd
Priority date: 2021-05-27
Filing date: 2021-05-27
Publication date: 2021-11-30
Anticipated expiration: 2031-05-27

Abstract

The utility model discloses a plane of reflection improved generation ultrasonic flowmeter, including import flange, survey buret, ultrasonic transducer, an at least reflection piece and outlet flange, reflection piece fixed mounting is in surveying buret, survey buret still is provided with integrative cast mount pad, ultrasonic transducer fixed mounting is on the mount pad, import flange and survey buret one end fixed connection, outlet flange and survey buret other end fixed connection, the through-hole that link up mutually with surveying buret is seted up with outlet flange to import flange. According to the ultrasonic flowmeter with the improved reflecting surface, the reflecting block is arranged in the measuring pipe, the position of the reflecting point of the ultrasonic beam is changed into a plane from the original circular arc reflecting surface, the scattering of the ultrasonic beam in the transmission process is reduced, and the measuring accuracy of the ultrasonic flowmeter is improved.

Description

Reflecting surface improved ultrasonic flowmeter

Technical Field

The utility model relates to an instrument and instrument measurement technical field specifically is a plane of reflection improved generation ultrasonic flowmeter.

Background

Ultrasonic flow meters are meters that measure flow by detecting the effect of fluid flow on an ultrasonic beam. The ultrasonic flowmeter is a flowmeter which can measure fluid accurately and stably, and can be used in occasions requiring high-precision measurement, such as natural gas trade handover, energy sources, environmental protection and the like. The ultrasonic flowmeter mainly comprises an ultrasonic transducer (or an ultrasonic flow sensor consisting of the transducer and a measuring pipe) and a converter, wherein the ultrasonic transducer is arranged on the measuring pipe. Where a transducer is a device that effects the conversion of electrical, mechanical or acoustic energy from one form of energy to another.

The ultrasonic flowmeter is divided into a direct-emitting type and a reflection type according to the installation mode of an ultrasonic transducer installed on a measuring pipeline, wherein the reflection type is used for obtaining a longer sound path, and the longer sound path is beneficial to improving the metering precision of the ultrasonic flowmeter. After the ultrasonic beam is emitted from one ultrasonic transducer, the ultrasonic beam needs to be reflected on the inner wall of the measuring tube and then received by the other ultrasonic transducer. Because the inner wall of the measuring tube is usually an inner arc surface, the ultrasonic beam can be scattered after being reflected by the inner arc surface, and the scattering can cause the signal intensity of the ultrasonic beam to be reduced, thereby influencing the metering accuracy of the ultrasonic flowmeter.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a plane of reflection improved generation ultrasonic flowmeter has solved the problem that current ultrasonic flowmeter measurement in-process ultrasonic beam signal intensity descends, measurement accuracy is low.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a plane of reflection improved generation ultrasonic flowmeter, includes import flange, surveys buret, ultrasonic transducer, an at least reflection piece and export flange, reflection piece fixed mounting surveys buret intraductal in, survey buret still is provided with integrative cast mount pad, ultrasonic transducer fixed mounting is on the mount pad, import flange and survey buret one end fixed connection, export flange and survey buret other end fixed connection, the through-hole that link up mutually with surveying buret is seted up with the export flange to the import flange.

Preferably, the reflection block comprises a first reflection block and a second reflection block, and the first reflection block and the second reflection block are welded on the reflection point of the acoustic channel of the ultrasonic transducer in the measuring tube.

Preferably, the mounting seat at least includes a first mounting seat and a second mounting seat, the first mounting seat is disposed along a side far away from the measuring tube in a first direction, the second mounting seat is disposed along a side far away from the measuring tube in a second direction, the first direction and the second direction are disposed at an angle of 180 °, the ultrasonic transducer at least includes a first ultrasonic transducer and a second ultrasonic transducer matched with the first ultrasonic transducer, and the first ultrasonic transducer and the second ultrasonic transducer are respectively and fixedly mounted on the first mounting seat and the second mounting seat.

Preferably, the reflection block is welded to a reflection point of an acoustic channel of an ultrasonic transducer in the measurement pipe, the mounting seat at least includes a third mounting seat and a fourth mounting seat, the third mounting seat is disposed toward a third direction along a side away from the measurement pipe, the fourth mounting seat is disposed toward a fourth direction along a side away from the measurement pipe, the third direction and the fourth direction are disposed at 90 degrees, the ultrasonic transducer at least includes a third ultrasonic transducer and a fourth ultrasonic transducer matched with the third ultrasonic transducer, and the third ultrasonic transducer and the fourth ultrasonic transducer are respectively and fixedly mounted on the third mounting seat and the fourth mounting seat.

Preferably, the surface of the reflecting block is a smooth plane.

Preferably, the inlet flange is connected with the flow channel in a penetrating way, and the outlet flange is connected with the flow channel in a penetrating way.

The utility model discloses possess following beneficial effect:

1. reduction of ultrasound beam scattering: the reflecting block is arranged in the measuring tube, and the position of the ultrasonic beam reflecting point is changed from the original circular arc reflecting surface to a plane, so that the scattering of the ultrasonic beam in the transmission process is reduced;

2. enhancing the signal strength: the surface of the reflecting block is a smooth plane with low roughness, and the smooth plane with low roughness is more favorable for the reflection of the ultrasonic beam and can also enhance the signal intensity of the reflected ultrasonic beam;

3. the measurement accuracy of the ultrasonic flowmeter is improved: the novel ultrasonic flowmeter with the improved reflecting surface is provided with a plurality of reflecting blocks with smooth surfaces in the measuring tube, the reflecting times are increased, the sound path is increased, and the longer sound path is favorable for improving the measuring precision of the ultrasonic flowmeter.

Drawings

Fig. 1 is an isometric view of a reflective surface modified ultrasonic flow meter provided by the present invention;

fig. 2 is a cross-sectional view of an ultrasonic flowmeter with an improved reflecting surface according to the present invention;

fig. 3 is an axonometric view of a reflection surface improved ultrasonic flowmeter provided by the present invention.

In the figure: 1. an inlet flange; 2. a measurement tube; 3. a first ultrasonic transducer; 4. a second ultrasonic transducer; 5. a first reflection block; 6. a second reflection block 7, an outlet flange; 8. a sound channel; 9. a mounting seat; 10. a first mounting seat; 11. a second mounting seat; 12. a through hole; 13. a flow-through channel; 14. an ultrasonic transducer; 15. a reflection block; 16. a third ultrasonic transducer; 17. a fourth ultrasonic transducer; 18. a third mounting seat; 19. and a fourth mounting seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and 2, fig. 2 is a sectional view in a direction of a-a in an axonometric view of the ultrasonic flowmeter with an improved reflecting surface provided in fig. 1, the present invention provides a technical solution: reflecting surface improved generation ultrasonic flowmeter, including import flange 1, survey buret 2, ultrasonic transducer 14, an at least reflection block 15 and export flange 7, reflection block 15 fixed mounting is in surveying buret 2 intraductally, survey buret 2 and still be provided with integrative cast mount pad 9, ultrasonic transducer 14 fixed mounting is on mount pad 9, import flange 1 and survey buret 2 one end fixed connection, export flange 7 and survey 2 other end fixed connection of buret, import flange 1 and export flange 7 offer the through-hole that link up mutually with surveying buret 2. The reflecting block 15 is arranged in the measuring tube 2, the position of the ultrasonic beam reflecting point is changed from the original circular arc reflecting surface to a plane, and the scattering of the ultrasonic beam in the transmission process is reduced.

In a preferred embodiment, the reflection block 15 comprises a first reflection block 5 and a second reflection block 6, and the first reflection block 5 and the second reflection block 6 are welded to the reflection points of the acoustic channel of the ultrasonic transducer in the pipe of the measurement pipe 2. The mounting seat 9 at least comprises a first mounting seat 10 and a second mounting seat 11, the first mounting seat 10 is arranged along one side far away from the measuring pipe 2 towards a first direction, the second mounting seat 11 is arranged along one side far away from the measuring pipe 2 towards a second direction, the first direction and the second direction are 180 degrees, the ultrasonic transducer 14 at least comprises a first ultrasonic transducer 3 and a second ultrasonic transducer 4 matched with the first ultrasonic transducer 3, and the first ultrasonic transducer 3 and the second ultrasonic transducer 4 are respectively and fixedly mounted on the first mounting seat 10 and the second mounting seat 11.

When the reflecting surface improved ultrasonic flowmeter works, the first ultrasonic transducer 3 emits an ultrasonic beam, the ultrasonic beam is transmitted to the first reflecting block 5 along the sound channel 8, is reflected and transmitted to the second reflecting block 6 through the first reflecting block 5, is reflected and transmitted to the second ultrasonic transducer 4 through the second reflecting block 6, and the second ultrasonic transducer 4 receives an ultrasonic beam signal. Meanwhile, the second ultrasonic transducer 4 can also emit an ultrasonic beam, the ultrasonic beam is transmitted to the second reflecting block 6 along the sound channel 8, is reflected and transmitted to the first reflecting block 5 through the second reflecting block 6, is reflected and transmitted to the first ultrasonic transducer 3 through the first reflecting block 5, and the ultrasonic beam signal is received by the first ultrasonic transducer 3. The ultrasonic flowmeter can also adopt a plurality of groups of matched ultrasonic transducers, the specific position of the ultrasonic flowmeter is determined according to the number of the reflection blocks, and the ultrasonic flowmeter can be positioned on one side or two sides of the measuring pipe; the reflecting surfaces on the first reflecting block 5 and the second reflecting block 6 are planes, and compared with the conventional inner arc surface reflecting surface, the scattering phenomenon during ultrasonic beam reflection can be reduced, so that the signal intensity attenuation during ultrasonic beam reflection is reduced. In an ultrasonic flowmeter which usually needs to perform ultrasonic beam reflection, the ultrasonic beam is generally reflected only once, wherein part of reasons are that the ultrasonic beam is scattered after being reflected by an inner arc surface, so that the signal intensity of the ultrasonic beam is reduced, and if the ultrasonic beam is reflected for multiple times, the signal intensity of the ultrasonic beam is reduced too much to influence the metering precision. The ultrasonic flowmeter with the improved reflecting surface greatly reduces the scattering phenomenon of the ultrasonic beam, can still ensure that the ultrasonic beam has enough signal intensity even after multiple reflections, increases the reflection times, increases the sound path, and is favorable for improving the metering precision of the ultrasonic flowmeter.

In a preferred embodiment, referring to fig. 3, fig. 3 is an isometric view of another embodiment of an ultrasonic flowmeter with an improved reflecting surface, a reflecting block 15 is welded to a reflecting point of an acoustic channel of an ultrasonic transducer in a pipe of a measuring pipe 2, a mounting seat 9 at least comprises a third mounting seat 18 and a fourth mounting seat 19, the third mounting seat 18 is arranged along a side away from the measuring pipe 2 towards a third direction, the fourth mounting seat 19 is arranged along a side away from the measuring pipe 2 towards a fourth direction, the third direction and the fourth direction are arranged at 90 degrees, an ultrasonic transducer 14 at least comprises a third ultrasonic transducer 16 and a fourth ultrasonic transducer 17 matched with the third ultrasonic transducer 16, and the third ultrasonic transducer 16 and the fourth ultrasonic transducer 17 are fixedly mounted on the third mounting seat 18 and the fourth mounting seat 19, respectively.

When the ultrasonic flowmeter with the improved reflecting surface works, the third ultrasonic transducer 16 emits an ultrasonic beam, the ultrasonic beam propagates to the reflecting block 15 along the sound channel 8, is reflected by the reflecting block 15 to propagate to the fourth ultrasonic transducer 17, and the fourth ultrasonic transducer 17 receives an ultrasonic beam signal. Meanwhile, an ultrasonic beam can be emitted by the fourth ultrasonic transducer 17, propagates along the sound channel 8 to the reflection block 15, is reflected by the reflection block 15 to propagate to the third ultrasonic transducer 16, and an ultrasonic beam signal is received by the third ultrasonic transducer 16. The ultrasonic flowmeter can also adopt a plurality of groups of paired ultrasonic transducers, and the specific positions of the ultrasonic transducers are determined according to the number of the reflection blocks and can be positioned on one side or two sides of the measuring pipe.

In a preferred embodiment, the surface of the reflector block 15 is a smooth plane. The inlet flange 1 is connected with the flow channel 13 in a penetrating way, and the outlet flange 7 is connected with the flow channel 13 in a penetrating way. The surface of the reflection block 15 is set to be a smooth plane, the reflection surfaces of the first reflection block 5 and the second reflection block 6 are smoothly ground, the surface roughness is reduced, the smooth plane with low roughness is more favorable for reflection of an ultrasonic beam, the signal intensity attenuation during reflection of the ultrasonic beam can be reduced, the higher signal intensity of the ultrasonic beam is more favorable for accurate measurement of the ultrasonic flowmeter, and therefore the measurement accuracy of the ultrasonic flowmeter is improved.

It should be noted that, in this document, 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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a plane of reflection improved generation ultrasonic flowmeter, includes import flange, surveys buret, ultrasonic transducer and export flange, its characterized in that still includes an at least reflection piece, reflection piece fixed mounting still is provided with integrative cast mount pad in surveying buret, ultrasonic transducer fixed mounting is on the mount pad, import flange and survey buret one end fixed connection, export flange and survey buret other end fixed connection, the through-hole that link up mutually with surveying buret is seted up with the export flange to the import flange.

2. The ultrasonic flowmeter of claim 1, wherein the reflection blocks comprise a first reflection block and a second reflection block, the first reflection block and the second reflection block being welded to reflection points of the acoustic channel of the ultrasonic transducer in the measurement pipe.

3. The ultrasonic flowmeter of claim 2, wherein the mounting blocks comprise at least a first mounting block and a second mounting block, the first mounting block is disposed along a side away from the measuring tube in a first direction, the second mounting block is disposed along a side away from the measuring tube in a second direction, the first direction is 180 ° from the second direction, the ultrasonic transducers comprise at least a first ultrasonic transducer and a second ultrasonic transducer matched with the first ultrasonic transducer, and the first ultrasonic transducer and the second ultrasonic transducer are respectively fixedly mounted on the first mounting block and the second mounting block.

4. The ultrasonic flowmeter of claim 1, wherein the reflection block is welded to a reflection point of an acoustic channel of the ultrasonic transducer in the measurement pipe, the mounting seats include at least a third mounting seat and a fourth mounting seat, the third mounting seat is disposed along a side away from the measurement pipe toward a third direction, the fourth mounting seat is disposed along a side away from the measurement pipe toward a fourth direction, the third direction and the fourth direction are disposed at 90 °, the ultrasonic transducer includes at least a third ultrasonic transducer and a fourth ultrasonic transducer matched with the third ultrasonic transducer, and the third ultrasonic transducer and the fourth ultrasonic transducer are respectively and fixedly mounted on the third mounting seat and the fourth mounting seat.

5. The ultrasonic flowmeter of claim 1, 2 or 4, wherein the surface of said reflecting block is a smooth surface.

6. The ultrasonic flowmeter of claim 1, wherein said inlet flange is in fluid communication with a flow channel and said outlet flange is in fluid communication with a flow channel.