Ultrasonic metering device and ultrasonic gas meter

Abstract

The embodiment of the application provides an ultrasonic metering device and an ultrasonic gas meter, relates to the technical field of ultrasonic metering, and the ultrasonic metering device comprises a first wall surface, a second wall surface, a first transducer and a second transducer. The first transducer and the second transducer are symmetrically arranged on the first wall surface in a parallel line direction of the height of the ultrasonic metering device as a symmetric axis; the second wall surface is arranged opposite to the first wall surface; and a part of the second wall surface is recessed in a direction away from the first wall surface to form a spherical reflecting surface. Ultrasonic signals generated by one of the first transducer and the second transducer are reflected by the spherical reflecting surface and received by the other one of the first transducer and the second transducer. The embodiment of the application reduces the installation precision requirement of the first transducer and the second transducer, meanwhile, the spherical reflecting surface effectively converges the ultrasonic signals, and the detection precision of the ultrasonic signals is improved.

Description

Technical Field

[0001] This application relates to the field of ultrasonic metering technology, and in particular to an ultrasonic metering device and an ultrasonic gas meter. Background Technology

[0002] An ultrasonic gas meter is an instrument that calculates gas flow by measuring the time difference of ultrasonic waves propagating in a gas flow.

[0003] In related technologies, ultrasonic gas meters include a housing and an ultrasonic metering device disposed within the housing. The ultrasonic metering device typically includes an ultrasonic metering unit and two transducers spaced apart on the ultrasonic metering unit. The two transducers are used to measure the amount of gas passing through the ultrasonic metering unit per unit time. Currently, some ultrasonic gas meters have an elliptical reflective surface in the flow channel.

[0004] However, existing ultrasonic gas meters have problems such as high requirements for transducer installation accuracy and poor ultrasonic focusing ability. Summary of the Invention

[0005] This application provides an ultrasonic metering device and an ultrasonic gas meter, which reduces the requirements for the installation position accuracy of the first and second transducers, improves the ultrasonic gas meter's ability to focus ultrasonic waves, and improves the detection accuracy of the ultrasonic gas meter.

[0006] In a first aspect, embodiments of this application provide an ultrasonic measuring device, including a first wall, a second wall, a first transducer, and a second transducer.

[0007] A first transducer and a second transducer are spaced apart on the first wall surface. The first transducer and the second transducer are symmetrically arranged with a line parallel to the height direction of the ultrasonic measuring device as the axis of symmetry.

[0008] The second wall is positioned opposite the first wall; a portion of the second wall is recessed in the direction away from the first wall, forming a spherical reflective surface.

[0009] The ultrasonic signal generated by one of the first and second transducers is reflected by the spherical reflector and then received by the other of the first and second transducers.

[0010] In some embodiments of this application, the spherical reflective surface has a first end point and a second end point along the direction from the first transducer to the second transducer.

[0011] The distance between the center point of the emitting structure surface of the first transducer and the first endpoint is d1, and the distance between the center point of the emitting structure surface of the second transducer and the second endpoint is d2; the radius of the spherical reflective surface is r.

[0012] d1 and r satisfy: r > d1.

[0013] d2 and r satisfy: r > d2.

[0014] Define the preset pointing angle of the first transducer as α1, define the center point of the emission structure surface of the first transducer as the first origin, and define the angle between the line connecting the first origin and the first endpoint and the center line of the first transducer as θ1. θ1 and α1 satisfy: θ1≥α1 / 2.

[0015] Define the preset pointing angle of the second transducer as α2, define the center point of the emission structure surface of the second transducer as the second origin, and define the angle between the line connecting the second origin and the second endpoint and the center line of the second transducer as θ2. θ2 and α2 satisfy: θ2≥α2 / 2.

[0016] In some embodiments of this application, the spherical reflective surface includes a first spherical reflective surface.

[0017] Along the direction from the first transducer to the second transducer, with the center point of the emission structure surface of the first transducer as the first origin, a first ray and a second ray with an included angle of α1 are formed. The first ray and the second ray are symmetrical about the center line of the first transducer.

[0018] Along the direction from the second transducer to the first transducer, with the center point of the emission structure surface of the second transducer as the second origin, a third ray and a fourth ray with an included angle of α2 are formed. The third ray and the fourth ray are symmetrical about the center line of the second transducer.

[0019] The connection point between the first ray and the fourth ray is the first connection base point; the connection point between the second ray and the third ray is the second connection base point; the first connection base point and the second connection base point are located on the second wall surface.

[0020] A first connecting angle is formed between the first ray and the fourth ray; a second connecting angle is formed between the second ray and the third ray.

[0021] The first connection point is formed by connecting the bisectors of the first and second connecting angles.

[0022] A first sphere is formed with the first connection point as the center and the distance between the first connection point and the first or second connection base point as the radius; the trajectory of the first spherical reflective surface coincides with the trajectory of the first sphere on the second wall.

[0023] In some embodiments of this application, the angle between the centerline of the first transducer and the direction from the first transducer to the second transducer is γ1, where γ1 satisfies: 30°≤γ1≤80°.

[0024] The angle between the centerline of the second transducer and the direction from the second transducer to the first transducer is γ2, and γ2 satisfies: 30°≤γ2≤80°.

[0025] α1 satisfies: 5°≤α1≤20°. α2 satisfies: 5°≤α2≤20°.

[0026] In some embodiments of this application, the angle between the centerline of the first transducer and the direction from the first transducer to the second transducer is 45°; the angle between the centerline of the second transducer and the direction from the second transducer to the first transducer is 45°.

[0027] The distance between the first transducer and the second transducer is the diameter of the first sphere.

[0028] In some embodiments of this application, the spherical reflective surface includes a second spherical reflective surface.

[0029] The ultrasonic signal generated by the first transducer is received by the second transducer after being reflected by the second spherical reflective surface, the first wall, and the second wall.

[0030] Along the direction from the first transducer to the second transducer, with the center point of the emission structure surface of the first transducer as the first origin, a fifth ray and a sixth ray with an included angle of α1 are formed. The fifth ray and the sixth ray are symmetrical about the center line of the first transducer.

[0031] With the midpoint of the connecting line between the first transducer and the second transducer as the first midpoint and the first midpoint as the origin, a first connecting line and a second connecting line with an included angle of α1 are formed.

[0032] The point where the fifth ray connects to the first line is the fifth base point, and the point where the sixth ray connects to the second line is the sixth base point; the fifth base point and the sixth base point are located on the second wall.

[0033] The fifth ray and the first line form a third connecting angle; the sixth ray and the second line form a fourth connecting angle.

[0034] The point where the bisector of the third connecting angle and the bisector of the fourth connecting angle meet forms the second connecting point.

[0035] With the second connection point as the center and the distance between the second connection point and the fifth or sixth base point as the radius, a second sphere is formed; the trajectory of the second spherical reflective surface and the trajectory of the second sphere on the second wall coincide.

[0036] In some embodiments of this application, the spherical reflective surface further includes a third spherical reflective surface; the second spherical reflective surface and the third spherical reflective surface are arranged at intervals along the arrangement direction of the first transducer and the second transducer.

[0037] The ultrasonic signal generated by the first transducer is received by the second transducer after being reflected by the second spherical reflective surface, the first wall surface, and the third spherical reflective surface.

[0038] Along the direction from the second transducer to the first transducer, with the center point of the emission structure surface of the second transducer as the second origin, a seventh ray and an eighth ray with an included angle of α2 are formed. The seventh ray and the eighth ray are symmetrical about the center line of the second transducer.

[0039] Using the midpoint of the connecting line between the first and second transducers as the first midpoint, and the first midpoint as the origin, a third and fourth connecting line with an included angle of α2 are formed.

[0040] The point where the seventh ray connects to the third line is the seventh base point; the point where the eighth ray connects to the fourth line is the eighth base point; the seventh base point and the eighth base point are located on the second wall.

[0041] The fifth connecting angle is formed between the seventh ray and the third line; the sixth connecting angle is formed between the eighth ray and the fourth line.

[0042] The point where the bisector of the fifth connecting angle and the bisector of the sixth connecting angle meet forms the third connecting point.

[0043] With the third connection point as the center and the distance between the third connection point and the seventh or eighth base point as the radius, a third sphere is formed; the trajectory of the third spherical reflecting surface coincides with the trajectory of the third sphere on the second wall.

[0044] In some embodiments of this application, the first wall surface has a fourth spherical reflective surface.

[0045] The ultrasonic signal generated by the first transducer is reflected by the second, fourth, and third spherical reflective surfaces and then received by the second transducer.

[0046] Along the height direction of the ultrasonic measuring device, with the first midpoint as the top point of the sphere and the diameter of the second or third sphere as the diameter, a fourth sphere is formed; the trajectory of the fourth spherical reflective surface coincides with the trajectory of the fourth sphere on the first wall surface.

[0047] Secondly, embodiments of this application provide an ultrasonic measuring device, including a first wall, a second wall, a first transducer, and a second transducer.

[0048] A first transducer and a second transducer are spaced apart on the first wall surface. The first and second transducers are symmetrically arranged with the parallel line of the height direction of the ultrasonic measuring device as the axis of symmetry. A part of the first wall surface is recessed in the direction away from the second wall surface to form a fifth spherical reflective surface.

[0049] The second wall is positioned opposite the first wall; the ultrasonic signal generated by one of the first and second transducers is reflected by the second wall and the fifth spherical reflector and then received by the other of the first and second transducers.

[0050] In some embodiments of this application, along the direction from the first transducer to the second transducer, with the center point of the emission structure surface of the first transducer as the first origin, a ninth ray and a tenth ray with an included angle of α1 are formed, and the ninth ray and the tenth ray are symmetrical about the center line of the first transducer.

[0051] The connection point between the ninth ray and the second wall is the ninth base point; the connection point between the tenth ray and the second wall is the tenth base point.

[0052] Using a line passing through the ninth base point and parallel to the height direction of the ultrasonic measuring device as a mirror line, draw a symmetrical ray to the ninth ray to form the eleventh ray.

[0053] Using a line passing through the tenth base point and parallel to the height direction of the ultrasonic measuring device as a mirror line, draw the symmetrical ray of the tenth ray to form the twelfth ray.

[0054] Along the direction from the second transducer to the first transducer, with the center point of the emission structure surface of the second transducer as the second origin, the thirteenth and fourteenth rays with an included angle of α2 are formed. The thirteenth and fourteenth rays are symmetrical about the center line of the second transducer.

[0055] The connection point between the thirteenth ray and the second wall is the thirteenth base point; the connection point between the fourteenth ray and the second wall is the fourteenth base point.

[0056] Using a line passing through the thirteenth base point and parallel to the height direction of the ultrasonic measuring device as a mirror line, draw a symmetrical ray to form the fifteenth ray.

[0057] Using the line passing through the fourteenth base point and parallel to the height direction of the ultrasonic measuring device as a mirror line, draw the symmetrical ray of the fourteenth ray to form the sixteenth ray.

[0058] The connection point of the eleventh and sixteenth rays forms the third connection point, and the connection point of the twelfth and fifteenth rays forms the fourth connection point; both the third and fourth connection points are located on the first wall surface.

[0059] The seventh connecting angle is formed between the eleventh and sixteenth rays; the eighth connecting angle is formed between the twelfth and fifteenth rays.

[0060] The point where the bisector of the seventh connecting angle and the bisector of the eighth connecting angle meet forms the fourth connecting point.

[0061] With the fourth connection point as the center and the distance between the fourth connection point and the third connection point or the fourth connection point as the radius, a fourth sphere is formed; the trajectory of the fifth spherical reflecting surface coincides with the trajectory of the fourth sphere on the first wall.

[0062] Thirdly, this application provides an ultrasonic gas meter, including an ultrasonic metering device.

[0063] This application provides an ultrasonic metering device and an ultrasonic gas meter. The ultrasonic metering device includes a first wall, a second wall, a first transducer, and a second transducer. The first and second transducers are spaced apart on the first wall and are symmetrically arranged about the height of the ultrasonic metering device. The second wall is opposite to the first wall. A portion of the second wall is recessed away from the first wall to form a spherical reflective surface. The ultrasonic signal generated by one of the first and second transducers is reflected by the spherical reflective surface and received by the other transducer.

[0064] By setting a spherical reflective surface on the second wall, the ultrasonic signal reflected by the spherical reflective surface can be concentrated and guided to the first transducer or the second transducer due to the geometric characteristics of the spherical reflective surface.

[0065] This reduces the scattering of ultrasonic signals during propagation, thereby reducing signal attenuation and improving detection accuracy. The ultrasonic metering device provided in this application only requires the first and second transducers to be symmetrically arranged with the central perpendicular plane of the spherical reflective surface, reducing the installation accuracy requirements for the first and second transducers. Simultaneously, the spherical reflective surface concentrates ultrasonic signal energy onto either the first or second transducer, effectively enhancing the received ultrasonic signal intensity and improving detection accuracy. Attached Figure Description

[0066] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0067] Figure 1 This is a schematic diagram of the structure of an ultrasonic metering device in related technologies;

[0068] Figure 2 A first-view structural schematic diagram of the ultrasonic measuring device provided in this application. Figure 1 ;

[0069] Figure 3 A first-view structural schematic diagram of the ultrasonic measuring device provided in this application. Figure 2 ;

[0070] Figure 4 A second-view structural schematic diagram of an embodiment of the ultrasonic metering device provided in this application;

[0071] Figure 5This is a schematic diagram of the structure of Embodiment 2 of the ultrasonic measuring device provided in this application;

[0072] Figure 6 This is a schematic diagram of the structure of Embodiment 3 of the ultrasonic metering device provided in this application;

[0073] Figure 7 This is a schematic diagram of the structure of Embodiment 4 of the ultrasonic measuring device provided in this application;

[0074] Figure 8 A first-view structural schematic diagram of Embodiment 5 of the ultrasonic measuring device provided in this application;

[0075] Figure 9 This is a second-view structural schematic diagram of Embodiment 5 of the ultrasonic metering device provided in this application.

[0076] Explanation of reference numerals in the attached figures:

[0077] 10: Transducer; 20: Wall surface;

[0078] 100: First wall surface;

[0079] 200: Second wall surface;

[0080] 300: First transducer;

[0081] 400: Second transducer;

[0082] 500: First spherical reflective surface; 510: Second spherical reflective surface; 520: Third spherical reflective surface; 530: Fourth spherical reflective surface; 540: Fifth spherical reflective surface;

[0083] 600: Side wall.

[0084] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0085] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0086] The flow channel of an ultrasonic gas meter refers to the passage or path through which gas flows within the meter. In existing ultrasonic gas meters, the reflecting surface used to reflect ultrasonic signals is planar. Based on the characteristics of the transducer, the trajectory of the ultrasonic wave emitted by transducer 10 is a conical ray with an included angle α.

[0087] Reference Figure 1 As shown, Figure 1 This is a front view of the flow path of an ultrasonic gas meter. Figure 1 The ultrasonic signal emitted by the left transducer 10 is a conical beam with an included angle of 14°. Figure 1 The dashed reflection line in the image shows that the existing ultrasonic gas meter's flow channel wall 20 has a flat reflective surface. After the ultrasonic signal is reflected once by the flat surface, the ultrasonic signal that can be effectively received by the right-side transducer 10 is only within the 11° ray range. Figure 1 (The solid reflection line in the image) means that ultrasonic signals outside this angle cannot be received and are lost.

[0088] Researchers have discovered that, currently, an elliptical reflective surface can be incorporated into the flow channel of an ultrasonic gas meter to mitigate the intensity attenuation during ultrasonic wave propagation. Two transducers are positioned at the focal points of the ellipse forming the reflective surface. In other words, when installing transducers in the flow channel of an ultrasonic gas meter, the installation accuracy of the two transducers must be strictly controlled to ensure they are positioned at the two focal points of the ellipse. Otherwise, changes in the transducer's position will affect the reflection of the ultrasonic signal, reducing the converging ability of the elliptical reflective surface. This results in poor ultrasonic wave converging ability and consequently, low detection accuracy in the ultrasonic gas meter.

[0089] Therefore, this application provides an ultrasonic metering device and an ultrasonic gas meter. The ultrasonic metering device includes a first wall, a second wall, a first transducer, and a second transducer. The first and second transducers are spaced apart on the first wall and are symmetrically arranged about the height of the ultrasonic metering device. The second wall is opposite to the first wall. A portion of the second wall is recessed away from the first wall to form a spherical reflective surface. The ultrasonic signal generated by one of the first and second transducers is reflected by the spherical reflective surface and received by the other transducer.

[0090] By setting a spherical reflective surface on the second wall, the ultrasonic signal reflected by the spherical reflective surface can be concentrated and guided to the first transducer or the second transducer due to the geometric characteristics of the spherical reflective surface.

[0091] This reduces the scattering of ultrasonic signals during propagation, thereby reducing signal attenuation and improving detection accuracy. Compared to related technologies where an elliptical reflective surface is used in the flow channel, requiring precise control of the transducer's installation position, the ultrasonic metering device provided in this application only requires the first and second transducers to be symmetrically arranged with respect to the vertical plane of the spherical reflective surface. This reduces the installation accuracy requirements for the first and second transducers. Simultaneously, the spherical reflective surface concentrates the ultrasonic signal energy onto either the first or second transducer, effectively enhancing the received ultrasonic signal intensity and improving detection accuracy.

[0092] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0093] In a first aspect, embodiments of this application provide an ultrasonic measuring device, including a first wall surface 100, a second wall surface 200, a first transducer 300, and a second transducer 400.

[0094] A first transducer 300 and a second transducer 400 are provided at intervals on the first wall surface 100. The first transducer 300 and the second transducer 400 are arranged symmetrically with the parallel line of the height direction of the ultrasonic measuring device as the axis of symmetry.

[0095] The second wall surface 200 is disposed opposite to the first wall surface 100; a portion of the second wall surface 200 is recessed in a direction away from the first wall surface 100 to form a spherical reflective surface.

[0096] The ultrasonic signal generated by one of the first transducers 300 and the second transducer 400 is reflected by the spherical reflector and then received by the other of the first transducers 300 and the second transducer 400.

[0097] For example, the flow channel of the ultrasonic metering device is a straight flow channel. The flow channel includes a first wall 100, a second wall 200, and a side wall 600. The first wall 100 and the second wall 200 are disposed opposite to each other, and the side wall 600 is used to connect the first wall 100 and the second wall 200 so that the flow channel forms a closed area.

[0098] For example, during the use of the ultrasonic metering device, the ultrasonic signal generated by one of the first transducer 300 and the second transducer 400 is reflected by the spherical reflective surface and then received by the other of the first transducer 300 and the second transducer 400. By setting the spherical reflective surface on the second wall 200, due to the geometric characteristics of the spherical reflective surface, the ultrasonic signal reflected by the spherical reflective surface can be concentrated and guided to the first transducer 300 or the second transducer 400.

[0099] This reduces the scattering of ultrasonic signals during propagation, thereby reducing the attenuation of the ultrasonic signal and improving the detection accuracy. The ultrasonic measuring device provided in this application only requires the first transducer 300 and the second transducer 400 to be symmetrically arranged with the central perpendicular plane of the spherical reflective surface, reducing the installation accuracy requirements of the first transducer 300 and the second transducer 400. Simultaneously, the spherical reflective surface concentrates the ultrasonic signal energy onto the first transducer 300 or the second transducer 400, thus effectively enhancing the received ultrasonic signal intensity and improving detection accuracy.

[0100] The length direction of the ultrasonic measuring device is the same as the arrangement direction of the first transducer 300 to the second transducer 400. The width direction of the ultrasonic measuring device is perpendicular to the arrangement direction of the first transducer 300 to the second transducer 400.

[0101] Along the width of the ultrasonic metering device, the spherical reflective surface has a perfectly symmetrical curvature. When the fluid passes through the spherical reflective surface, the resistance and pressure it experiences are evenly distributed, which helps maintain a stable flow state of the fluid, helps to focus ultrasonic waves, and improves the detection accuracy of the ultrasonic metering device.

[0102] As one feasible implementation, the spherical reflective surface has a first end point and a second end point along the direction from the first transducer 300 to the second transducer 400.

[0103] The distance between the center point of the emitting structure surface of the first transducer 300 and the first endpoint is d1, and the distance between the center point of the emitting structure surface of the second transducer 400 and the second endpoint is d2; the radius of the spherical reflective surface is r.

[0104] d1 and r satisfy: r > d1.

[0105] d2 and r satisfy: r > d2.

[0106] The first transducer 300 is defined with a preset pointing angle of α1. The center point of the emission structure surface of the first transducer 300 is defined as the first origin. The angle between the line connecting the first origin and the first endpoint and the center line of the first transducer is θ1. θ1 and α1 satisfy: θ1≥α1 / 2.

[0107] The second transducer 400 is defined with a preset pointing angle of α2. The center point of the emission structure surface of the second transducer 400 is defined as the second origin. The angle between the line connecting the second origin and the second endpoint and the center line of the second transducer is θ2. θ2 and α2 satisfy: θ2≥α2 / 2.

[0108] Where α1 = α2.

[0109] Where d1 is the length of O1Z1, and r is the length of E1A1.

[0110] d1 and r satisfy the condition that r > d1. This helps ensure that the ultrasonic signal is effectively reflected and focused on the spherical reflective surface.

[0111] In the first transducer 300, the preset pointing angle α1 is the maximum angle of the ultrasonic signal that the first transducer 300 can emit. The angle α1 is inherently determined by the design and manufacturing parameters of the first transducer 300. Specifically, the size of α1 depends on the factory settings of the first transducer 300, including its internal structure, material properties, and design specifications.

[0112] By setting α1 and θ1 to satisfy θ1≥α1 / 2, the ultrasonic signals emitted by the first transducer 300 can all be reflected by the spherical reflective surface. In this way, the focusing ability of the ultrasonic metering device is improved along the width direction of the ultrasonic metering device.

[0113] Along the direction from the first transducer 300 to the second transducer 400, the distance between the center point of the emission structure surface of the second transducer 400 and the second endpoint is d2.

[0114] Where d2 is the length of O2Z2.

[0115] d2 and r satisfy: r > d2. This helps ensure that the ultrasonic signal is effectively reflected and focused on the spherical reflective surface.

[0116] In the second transducer 400, α2 is the maximum angle of the ultrasonic signal that the second transducer 400 can emit. The angle α2 is inherently determined by the design and manufacturing parameters of the second transducer 400. Specifically, the size of α2 depends on the factory settings of the second transducer 400, including its internal structure, material properties, and design specifications.

[0117] By setting α2 and θ2 to satisfy θ2≥α2 / 2, the ultrasonic signals emitted by the second transducer 400 can all be reflected by the spherical reflective surface. In this way, the focusing ability of the ultrasonic metering device is improved along the width direction of the ultrasonic metering device.

[0118] As one possible implementation, the spherical reflective surface includes a first spherical reflective surface 500.

[0119] Along the direction from the first transducer 300 to the second transducer 400, with the center point of the emission structure surface of the first transducer 300 as the first origin, a first ray and a second ray with an included angle of α1 are formed. The first ray and the second ray are symmetrical about the center line of the first transducer 300.

[0120] Along the direction from the second transducer 400 to the first transducer 300, with the center point of the emission structure surface of the second transducer 400 as the second origin, a third ray and a fourth ray with an included angle of α2 are formed. The third ray and the fourth ray are symmetrical about the center line of the second transducer 400.

[0121] Along the direction from the first transducer 300 to the second transducer 400, with the center point of the emission structure surface of the first transducer 300 as the first origin, a first ray and a second ray are formed. The first ray and the second ray are symmetrical about the center line of the first transducer 300, and the included angle between the first ray and the second ray is α.

[0122] Along the direction from the second transducer 400 to the first transducer 300, with the center point of the emission structure surface of the second transducer 400 as the second origin, a third ray and a fourth ray are formed. The third ray and the fourth ray are symmetrical about the center line of the second transducer 400, and the included angle between the third ray and the fourth ray is α2.

[0123] The connection point between the first and fourth rays is the first connection base point; the connection point between the second and third rays is the second connection base point. The first and second connection base points are located at the second wall surface 200°.

[0124] A first connecting angle is formed between the first ray and the fourth ray; a second connecting angle is formed between the second ray and the third ray.

[0125] The first connection point is formed by connecting the bisectors of the first and second connecting angles.

[0126] A first sphere is formed with the first connection point as the center and the distance between the first connection point and the first or second connection base point as the radius; the trajectory of the first spherical reflective surface 500 coincides with the trajectory of the first sphere on the second wall 200.

[0127] The preset pointing angle of the first transducer 300 is α1, and the preset pointing angle of the second transducer 400 is α2. α1 = α2. For ease of illustration in the accompanying drawings, α is used to refer to α1 and α2.

[0128] For example, the center point of the emitting structure surface of the first transducer 300 is the first origin O1.

[0129] The emitting structure surface of the first transducer 300 has a regular geometric shape, such as a circle or a rectangle, and the center point of the emitting structure surface of the first transducer 300 is the geometric center of the geometric shape.

[0130] The centerline of the first transducer 300 refers to an imaginary straight line that is perpendicular to the emitting structure surface of the first transducer 300 and passes through its center point.

[0131] Similarly, the center point of the emitting structure surface of the second transducer 400 is the second origin O2.

[0132] The emitting structure surface of the second transducer 400 has a regular geometric shape, such as a circle or a rectangle, and the center point of the emitting structure surface of the second transducer 400 is the geometric center of the geometric shape.

[0133] The centerline of the second transducer 400 refers to an imaginary straight line that is perpendicular to the emitting structure surface of the second transducer 400 and passes through its center point.

[0134] For example, since the angles α1 of the first transducer 300 and α2 of the second transducer 400 are fixed, α1 and α2 are also determined once the types of the first transducer 300 and the second transducer 400 are determined. Therefore, in order to design a reasonable flow channel, it is necessary to adjust the distance between the first transducer 300 and the second transducer 400, and the distance between the first wall 100 and the second wall 200, so that the ultrasonic signal emitted by one of the first transducer 300 and the second transducer 400 can be received by the other of the first transducer 300 and the second transducer 400.

[0135] For ease of description, the distance between the first transducer 300 and the second transducer 400 is set to a preset value. Then, the height of the flow channel is determined according to the path of the ultrasonic signals emitted by the first transducer 300 and the second transducer 400.

[0136] In some embodiments, refer to Figures 2 to 4 As shown, the distance between the first transducer 300 and the second transducer 400 along the length of the ultrasonic metering device is set to a preset value. The distance between the first wall surface 100 and the second wall surface 200 along the height of the ultrasonic metering device is variable. With the center point of the emitting structure surface of the first transducer 300 as the first origin O1, two rays are formed: a first ray and a second ray. These two rays are symmetrical about the centerline of the first transducer 300, with an included angle α1.

[0137] With the center point of the emitting structure surface of the second transducer 400 as the second origin O2, a third ray and a fourth ray are formed. These two rays are also symmetrical about the center line of the second transducer 400, and the included angle is also α2.

[0138] Since the first transducer 300 and the second transducer 400 are symmetrically arranged, a first connection point A1 will be formed between the first ray and the fourth ray, and a second connection point A2 will be formed between the second ray and the third ray. The first connection point A1 and the second connection point A2 are located on the second wall surface 200.

[0139] Furthermore, a first connecting angle ∠O1A1O2 is formed between the first and fourth rays, and a second connecting angle ∠O1A2O2 is formed between the second and third rays. The point where the bisectors of the first and second connecting angles meet forms the first connecting point. A sphere is constructed with the first connecting point as its center and the distance between the first connecting point E1 and either the first connecting base point A1 or the second connecting base point A2 as its radius, forming a first sphere. The trajectory of the spherical reflecting surface coincides with the trajectory of the first sphere on the second wall at 20°.

[0140] Thus, through geometric construction, the first connection point E1 is determined as the center of the sphere. The first connection point E1 is obtained by calculating the intersection of the angle bisectors of the first and second connection angles. The radius is determined by the distance between the first connection point E1 and either the first connection base point A1 or the second connection base point A2. This distance ensures that the size of the first sphere matches the required reflection path of the ultrasonic signal. The actual trajectory of the first spherical reflective surface 500 coincides with the trajectory of the first sphere on the second wall 200, meaning that the shape of the spherical reflective surface strictly follows the geometric characteristics of the first sphere, thereby ensuring the accuracy of the ultrasonic signal reflection path.

[0141] As one feasible implementation method, refer to Figure 3 As shown, the angle between the centerline of the first transducer 300 and the direction from the first transducer 300 to the second transducer 400 is γ1, and γ1 satisfies: 30°≤γ1≤80°; the angle between the centerline of the second transducer 400 and the direction from the second transducer 400 to the first transducer 300 is γ2, and γ2 satisfies: 30°≤γ2≤80°.

[0142] α1 satisfies: 5°≤α1≤20°. α2 satisfies: 5°≤α2≤20°.

[0143] For example, when γ1 is in the range of 30°-80°, it ensures effective transmission of the ultrasonic signal between the first transducer 300 and the second transducer 400. When γ2 is in the range of 30°-80°, it ensures effective transmission of the ultrasonic signal between the first transducer 300 and the second transducer 400.

[0144] α1 is the maximum angle of the ultrasonic signal emitted by the first transducer 300. The range of α1 is 5°-20°. This angle is usually determined by the design and manufacturing parameters of the first transducer 300 and the second transducer 400, and affects the divergence or focusing characteristics of the ultrasonic signal.

[0145] α2 is the maximum angle of the ultrasonic signal emitted by the second transducer 400. The range of α2 is 5°-20°. This angle is usually determined by the design and manufacturing parameters of the first transducer 300 and the second transducer 400, and affects the divergence or focusing characteristics of the ultrasonic signal.

[0146] As one feasible implementation method, refer to Figure 5 As shown, the angle between the centerline of the first transducer 300 and the direction from the first transducer 300 to the second transducer 400 is 45°. The angle between the centerline of the second transducer 400 and the direction from the second transducer 400 to the first transducer 300 is also 45°. The centerlines of the first transducer 300 and the second transducer 400 intersect at point M1. The angle between the centerlines of the first transducer 300 and the second transducer 400 is 90°. The first connection angle between the first ray and the fourth ray is 90°. The second connection angle between the second ray and the third ray is 90°.

[0147] At this point, the distance between the first origin of the first transducer 300 and the second origin of the second transducer 400 is the diameter of the first sphere.

[0148] The first connecting point E1 is formed by connecting the angle bisectors of the first and second connecting angles. Connect E1 and A1, and E1 and A2. According to the geometry of circles, the angles formed by the lines connecting any point on the circle corresponding to the same arc A1A2 are equal, that is, ∠A1E1A2=∠A1O1A2=∠A2O2A1=α.

[0149] As one feasible implementation method, refer to Figure 6 As shown, the spherical reflective surface includes a second spherical reflective surface 510. The ultrasonic signal generated by the first transducer 300 is reflected by the second spherical reflective surface 510, the first wall 100, and the second wall 200 and then received by the second transducer 400.

[0150] Along the direction from the first transducer 300 to the second transducer 400, with the center point of the emission structure surface of the first transducer 300 as the first origin, a fifth ray and a sixth ray with an included angle of α1 are formed. The fifth ray and the sixth ray are symmetrical about the center line of the first transducer 300.

[0151] With the midpoint of the line connecting the first transducer 300 and the second transducer 400 as the first midpoint and the first midpoint as the origin, a first line and a second line with an included angle of α1 are formed.

[0152] The connection point between the fifth ray and the first line is the fifth base point, and the connection point between the sixth ray and the second line is the sixth base point; the fifth base point and the sixth base point are located on the second wall 200.

[0153] The fifth ray and the first line form a third connecting angle; the sixth ray and the second line form a fourth connecting angle.

[0154] The point where the bisector of the third connecting angle and the bisector of the fourth connecting angle meet forms the second connecting point.

[0155] A second sphere is formed by drawing a sphere with the second connection point as the center and the distance between the second connection point and the fifth or sixth base point as the radius; the trajectory of the second spherical reflective surface 510 and the trajectory of the second sphere on the second wall 200 coincide.

[0156] For example, the ultrasonic signal is emitted from the first transducer 300, reflected by the second spherical reflector 510, the first wall 100, and the second wall 200, and then received by the second transducer 400. The ultrasonic signal propagates in a W-shaped path in the flow channel, which allows the ultrasonic signal to travel a longer distance in the flow channel. This extended path can improve the resolution and accuracy of the measurement. Furthermore, because the W-shaped path involves multiple reflections and a longer propagation path, it can average out and reduce the influence of instantaneous changes caused by fluid turbulence or other interference factors on the measurement results, thereby improving the detection accuracy of the ultrasonic metering device.

[0157] For example, the fifth and sixth rays are symmetrical about the centerline of the first transducer 300, with an included angle of α1. The included angle α1 between the fifth and sixth rays is the maximum angle of the ultrasonic signal that the first transducer 300 can emit.

[0158] By setting the connection point of the fifth ray and the first line as the fifth base point, and the connection point of the sixth ray and the second line as the sixth base point, with B5 and B6 located on the second wall 200, the ultrasonic signal path has a clearly defined reflection point on the second wall 200, which helps to precisely control the propagation path of the ultrasonic signal. The second connection point E2 is determined by the intersection of the angle bisectors of the third and fourth connection angles. A second sphere is constructed with this point as its center. The trajectory of the second spherical reflecting surface 510 and the second sphere on the second wall 200 coincides, ensuring the accuracy of the ultrasonic signal reflection path.

[0159] In this way, precise geometric construction ensures the effective transmission of ultrasonic signals in complex paths, optimizes the reflection and reception of ultrasonic signals, and improves the performance and measurement accuracy of ultrasonic metrology devices.

[0160] In some embodiments, the second midpoint M2 may be the midpoint of the distance between the first origin of the first transducer 300 and the second origin of the second transducer 400.

[0161] In other embodiments, a parallel line is drawn along the height direction of the ultrasonic metering device, passing through the midpoint of the distance between the first transducer 300 and the second transducer 400, and the second midpoint M2 can also be on the parallel line.

[0162] As one feasible implementation, the spherical reflective surface further includes a third spherical reflective surface 520; the second spherical reflective surface 510 and the third spherical reflective surface 520 are arranged at intervals along the arrangement direction of the first transducer 300 and the second transducer 400.

[0163] The ultrasonic signal generated by the first transducer 300 is reflected by the second spherical reflector 510, the first wall 100, and the third spherical reflector 520 and then received by the second transducer 400.

[0164] Along the direction from the second transducer 400 to the first transducer 300, with the center point of the emission structure surface of the second transducer 400 as the second origin, a seventh ray and an eighth ray with an included angle of α2 are formed. The seventh ray and the eighth ray are symmetrical about the center line of the second transducer 400.

[0165] Using the midpoint of the line connecting the first transducer 300 and the second transducer 400 as the first midpoint, and the first midpoint as the origin, a third and fourth line with an included angle of α2 are formed.

[0166] The point where the seventh ray connects to the third line is the seventh base point; the point where the eighth ray connects to the fourth line is the eighth base point; the seventh base point and the eighth base point are located at the second wall 200.

[0167] The fifth connecting angle is formed between the seventh ray and the third line; the sixth connecting angle is formed between the eighth ray and the fourth line.

[0168] The point where the bisector of the fifth connecting angle and the bisector of the sixth connecting angle meet forms the third connecting point.

[0169] With the third connection point as the center and the distance between the third connection point and the seventh or eighth base point as the radius, a third sphere is formed; the trajectory of the third spherical reflective surface 520 coincides with the trajectory of the third sphere on the second wall 200.

[0170] For example, refer to Figure 6 As shown, along the direction from the first transducer 300 to the second transducer 400, the second spherical reflective surface 510 has a third endpoint Z3 and a fourth endpoint Z4, and the third spherical reflective surface 520 has a fifth endpoint Z5 and a sixth endpoint Z6.

[0171] The distance between the center point of the emitting structure surface of the first transducer 300 and the third endpoint Z3 is d3, and the radius of the second spherical reflector 510 is r2; the distance between the center point of the emitting structure surface of the second transducer 400 and the sixth endpoint is d4; and the radius of the third spherical reflector 520 is r3.

[0172] d3 and r2 satisfy the condition that r2 > d3. This helps ensure that the ultrasonic signal is effectively reflected and focused on the second spherical reflector 510.

[0173] The length of r2 is the same as the length of E2B5.

[0174] d4 and r3 satisfy the condition that r3 > d4. This helps ensure that the ultrasonic signal is effectively reflected and focused on the third spherical reflecting surface 520.

[0175] The length of r3 is the same as the length of E3B7.

[0176] The first transducer 300 is defined with a preset pointing angle of α1. The center point of the emission structure surface of the first transducer 300 is defined as the first origin. The angle between the line connecting the first origin and the third endpoint and the center line of the first transducer is θ3. θ3 and α1 satisfy: θ3≥α1 / 2.

[0177] The ultrasonic signals emitted by the first transducer 300 can all be reflected by the second spherical reflector 510, thus improving the focusing ability of the ultrasonic metering device along the width direction.

[0178] The second transducer 400 is defined with a preset pointing angle of α2. The center point of the emission structure surface of the second transducer 400 is defined as the second origin. The angle between the line connecting the second origin and the sixth endpoint and the center line of the second transducer is θ4. θ4 and α2 satisfy: θ4≥α2 / 2.

[0179] The ultrasonic signals emitted by the first transducer 300 can all be reflected by the third spherical reflector 520, thus improving the focusing ability of the ultrasonic metering device along its width.

[0180] In some embodiments, the ultrasonic signal is emitted from the first transducer 300, reflected by the second wall 200, the first wall 100, and the third spherical reflector 520, and then received by the second transducer 400. The ultrasonic signal propagates in a W-shaped path in the flow channel, which allows the ultrasonic signal to travel a longer distance in the fluid. This extended path can improve the resolution and accuracy of the measurement. Furthermore, because the W-shaped path involves multiple reflections and a longer propagation path, it can average out and reduce the influence of instantaneous changes caused by fluid turbulence or other disturbances on the measurement results.

[0181] In other embodiments, reference is made to Figure 6 As shown, the ultrasonic signal is emitted from the first transducer 300, reflected by the second spherical reflector 510, the first wall 100, and the third spherical reflector 520, and then received by the second transducer 400. The ultrasonic signal propagates in a W-shaped path in the flow channel. This W-shaped path design allows the ultrasonic signal to travel a longer distance in the fluid. This extended path can improve the resolution and accuracy of the measurement. Furthermore, because the W-shaped path involves multiple reflections and a longer propagation path, it can average out and reduce the influence of instantaneous changes caused by fluid turbulence or other interference factors on the measurement results.

[0182] During the propagation of the ultrasonic signal, the ultrasonic signal is reflected by the second spherical reflector 510 and the third spherical reflector 520. The ultrasonic signal is reflected twice by the spherical reflectors, which helps to concentrate the ultrasonic signal on the designated path, thereby reducing ultrasonic signal scattering and loss and increasing the intensity of the ultrasonic signal.

[0183] For example, the seventh and eighth rays are symmetrical about the centerline of the second transducer 400, with an included angle of α2. The included angle α2 between the seventh and eighth rays is the maximum angle of the ultrasonic signal that the second transducer 400 can emit.

[0184] By setting the connection point of the seventh ray and the third line as the seventh base point, and the connection point of the eighth ray and the fourth line as the eighth base point, B5 and B6, B7 and B8 are on the same plane and located on the second wall 200. This ensures that the ultrasonic signal path has a clearly defined reflection point on the second wall 200, which helps to precisely control the propagation path of the ultrasonic signal. The third connection point is determined by the intersection of the angle bisectors. A third sphere is constructed with this point as its center. The third spherical reflecting surface 520 coincides with the trajectory of the third sphere on the second wall 200, ensuring the accuracy of the ultrasonic signal reflection path.

[0185] In this way, precise geometric construction ensures the effective transmission of ultrasonic signals in complex paths, optimizes the reflection and reception of ultrasonic signals, and improves the performance and measurement accuracy of ultrasonic metrology devices.

[0186] As one feasible implementation method, refer to Figure 7 As shown, the first wall surface 100 has a fourth spherical reflective surface 530.

[0187] The ultrasonic signal generated by the first transducer 300 is reflected by the second spherical reflector 510, the fourth spherical reflector 530, and the third spherical reflector 520 and then received by the second transducer 400.

[0188] Along the height direction of the ultrasonic measuring device, with the first midpoint as the top point of the sphere and the diameter of the second or third sphere as the diameter, a fourth sphere is formed; the trajectory of the fourth spherical reflective surface 530 coincides with the trajectory of the fourth sphere on the first wall surface 100.

[0189] For example, the second spherical reflector 510, the fourth spherical reflector 530, and the third spherical reflector 520 reflect ultrasonic signals in sequence, so that the ultrasonic signal path is precisely controlled so that it can be received by the second transducer 400.

[0190] Through precise geometric design of multiple reflective surfaces and a sphere, the ultrasonic signal path is optimized, reducing ultrasonic signal loss and path error. The multiple reflection design helps enhance ultrasonic signal strength, reduce noise and interference, and improve signal quality and reliability.

[0191] Secondly, embodiments of this application provide an ultrasonic measuring device, including a first wall surface 100, a second wall surface 200, a first transducer 300, and a second transducer 400.

[0192] A first transducer 300 and a second transducer 400 are spaced apart on the first wall surface 100. The first transducer 300 and the second transducer 400 are symmetrically arranged with the parallel line of the height direction of the ultrasonic metering device as the axis of symmetry. A part of the first wall surface 100 is recessed in the direction away from the second wall surface 200 to form a fifth spherical reflective surface 540.

[0193] The second wall 200 is disposed opposite to the first wall 100; the ultrasonic signal generated by one of the first transducer 300 and the second transducer 400 is reflected by the second wall 200 and the fifth spherical reflector 540 and then received by the other of the first transducer 300 and the second transducer 400.

[0194] For example, a portion of the first wall 100 is recessed outward to form a fifth spherical reflective surface 540 for reflecting and guiding ultrasonic signals.

[0195] For example, during the use of the ultrasonic metering device, the ultrasonic signal generated by one of the first transducer 300 and the second transducer 400 is reflected by the second wall 200, the fifth spherical reflector 540, and then received by the other of the first transducer 300 and the second transducer 400. By setting the fifth spherical reflector 540 on the first wall 100, due to the geometric characteristics of the fifth spherical reflector 540, the ultrasonic signal reflected by the fifth spherical reflector 540 can be concentrated and guided to the first transducer 300 or the second transducer 400. In this way, the scattering of the ultrasonic signal during propagation is reduced, thereby reducing the attenuation of the ultrasonic signal and improving the detection accuracy of the ultrasonic signal.

[0196] As one feasible implementation, along the direction from the first transducer 300 to the second transducer 400, with the center point of the emission structure surface of the first transducer 300 as the first origin, a ninth ray and a tenth ray with an included angle of α1 are formed, and the ninth ray and the tenth ray are symmetrical about the center line of the first transducer 300.

[0197] The connection point between the ninth ray and the second wall 200 is the ninth base point; the connection point between the tenth ray and the second wall 200 is the tenth base point.

[0198] Using a line passing through the ninth base point and parallel to the height direction of the ultrasonic measuring device as a mirror line, draw a symmetrical ray to the ninth ray to form the eleventh ray.

[0199] Using a line passing through the tenth base point and parallel to the height direction of the ultrasonic measuring device as a mirror line, draw the symmetrical ray of the tenth ray to form the twelfth ray.

[0200] Along the direction from the second transducer 400 to the first transducer 300, with the center point of the emission structure surface of the second transducer 400 as the second origin, the thirteenth and fourteenth rays with an included angle of α2 are formed. The thirteenth and fourteenth rays are symmetrical about the center line of the second transducer 400.

[0201] The connection point between the thirteenth ray and the second wall 200 is the thirteenth base point; the connection point between the fourteenth ray and the second wall 200 is the fourteenth base point.

[0202] Using a line passing through the thirteenth base point and parallel to the height direction of the ultrasonic measuring device as a mirror line, draw a symmetrical ray to form the fifteenth ray.

[0203] Using the line passing through the fourteenth base point and parallel to the height direction of the ultrasonic measuring device as a mirror line, draw the symmetrical ray of the fourteenth ray to form the sixteenth ray.

[0204] The connection point of the eleventh and sixteenth rays forms the third connection point, and the connection point of the twelfth and fifteenth rays forms the fourth connection point; both the third and fourth connection points are located on the first wall surface 100.

[0205] The seventh connecting angle is formed between the eleventh and sixteenth rays; the eighth connecting angle is formed between the twelfth and fifteenth rays.

[0206] The point where the bisector of the seventh connecting angle and the bisector of the eighth connecting angle meet forms the fourth connecting point.

[0207] With the fourth connection point as the center and the distance between the fourth connection point and the third connection base point or the fourth connection base point as the radius, a fourth sphere is formed; the trajectory of the fifth spherical reflective surface 540 coincides with the trajectory of the fourth sphere on the first wall surface 100.

[0208] For example, since the α angle of the first transducer 300 and the second transducer 400 is fixed, α is also determined once the types of the first transducer 300 and the second transducer 400 are determined. Therefore, in order to design a reasonable flow channel, it is necessary to adjust the distance between the first transducer 300 and the second transducer 400, and the distance between the first wall 100 and the second wall 200, so that the ultrasonic signal emitted by one of the first transducer 300 and the second transducer 400 can be received by the other of the first transducer 300 and the second transducer 400.

[0209] For ease of description, the distance between the first transducer 300 and the second transducer 400 is set to a preset value along the length of the ultrasonic metering device, while the distance between the first wall 100 and the second wall 200 is variable. Therefore, the height of the flow channel is determined by the path of the ultrasonic signals emitted by the first transducer 300 and the second transducer 400.

[0210] In some embodiments, the distance between the first transducer 300 and the second transducer 400 is set to a preset value. With the center point of the emitting structure surface of the first transducer 300 as the first origin O1, two rays are formed: a ninth ray and a tenth ray. These two rays are symmetrical about the centerline of the first transducer 300, with an included angle of α1.

[0211] With the center point of the emitting structure surface of the second transducer 400 as the second origin O2, the thirteenth and fourteenth rays are formed. These two rays are also symmetrical about the center line of the second transducer 400, and the included angle is also α2.

[0212] Furthermore, using a line passing through the ninth base point C9 and parallel to the height direction of the ultrasonic measuring device as a mirror line, a symmetrical ray is drawn from the ninth ray to form the eleventh ray.

[0213] Using the line passing through the tenth base point C10 and parallel to the height direction of the ultrasonic measuring device as a mirror line, draw the symmetrical ray of the tenth ray to form the twelfth ray.

[0214] Using the line passing through the thirteenth base point C13 and parallel to the height direction of the ultrasonic measuring device as a mirror line, draw the symmetrical ray of the thirteenth ray to form the fifteenth ray.

[0215] Using the line passing through the fourteenth base point C14 and parallel to the height direction of the ultrasonic measuring device as a mirror line, draw the symmetrical ray of the fourteenth ray to form the sixteenth ray.

[0216] Reference Figure 8 and Figure 9 As shown, the eleventh and sixteenth rays form the seventh connecting angle ∠C9D1C14, and the twelfth and fifteenth rays form the eighth connecting angle ∠C10D2C13. The third connecting point D1 and the fourth connecting point D2 are located on the first wall surface 100. The point where the bisectors of the seventh and eighth connecting angles meet forms the fourth connecting point. A sphere is drawn with the fourth connecting point as its center and the distance between the fourth connecting point E5 and either the third or fourth connecting point D1 or D4 as its radius, forming the fourth sphere. The trajectory of the fifth spherical reflecting surface 540 coincides with the trajectory of the fourth sphere on the first wall surface 100.

[0217] Thus, through geometric construction, the fourth connection point E5 is determined as the center of the sphere. The fourth connection point E5 is obtained by calculating the intersection of the angle bisectors of the seventh and eighth connection angles. The radius is determined by the distance between the fourth connection point E5 and either the third connection base point D1 or the fourth connection base point D2. This distance ensures that the size of the fourth sphere matches the required reflection path of the ultrasonic signal. The actual trajectory of the fifth spherical reflective surface 540 coincides with the trajectory of the fourth sphere on the second wall 200, meaning that the shape of the fifth spherical reflective surface 540 strictly follows the geometric characteristics of the fourth sphere, thereby ensuring the accuracy of the ultrasonic signal reflection path.

[0218] Thirdly, embodiments of this application provide an ultrasonic gas meter, including an ultrasonic metering device.

[0219] It is understood that since the ultrasonic gas meter of this application adopts the technical solution of the above-described ultrasonic metering device embodiment, it at least has the beneficial effects brought about by the technical solution of the above-described ultrasonic metering device embodiment, which will not be elaborated here.

[0220] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. An ultrasonic measuring device, characterized in that, include: A first wall surface (100) is provided with a first transducer (300) and a second transducer (400) spaced apart. The first transducer (300) and the second transducer (400) are symmetrically arranged with the parallel line of the height direction of the ultrasonic measuring device as the axis of symmetry. A second wall surface (200) is disposed opposite to the first wall surface (100); a portion of the second wall surface (200) is recessed in a direction away from the first wall surface (100) to form a spherical reflective surface; The ultrasonic signal generated by one of the first transducer (300) and the second transducer (400) is reflected by the spherical reflective surface and received by the other of the first transducer (300) and the second transducer (400).

2. The ultrasonic measuring device according to claim 1, characterized in that, Along the direction from the first transducer (300) to the second transducer (400), the spherical reflective surface has a first end point and a second end point; The distance between the center point of the emitting structure surface of the first transducer (300) and the first endpoint is d1, and the distance between the center point of the emitting structure surface of the second transducer (400) and the second endpoint is d2; the radius of the spherical reflective surface is r; The condition d1 and r satisfy: r > d1; The condition d2 and r satisfy: r > d2; The first transducer (300) is defined with a preset pointing angle of α1, the center point of the emission structure surface of the first transducer (300) is defined as the first origin, and the angle between the line connecting the first origin and the first endpoint and the center line of the first transducer is θ1. The θ1 and the α1 satisfy: θ1≥α1 / 2. The second transducer (400) is defined with a preset pointing angle of α2. The center point of the emission structure surface of the second transducer (400) is defined as the second origin. The angle between the line connecting the second origin and the second endpoint and the center line of the second transducer is θ2. θ2 and α2 satisfy: θ2≥α2 / 2.

3. The ultrasonic measuring device according to claim 2, characterized in that, The spherical reflective surface includes a first spherical reflective surface (500); Along the direction from the first transducer (300) to the second transducer (400), with the center point of the emission structure surface of the first transducer (300) as the first origin, a first ray and a second ray with an included angle of α1 are formed. The first ray and the second ray are symmetrical about the center line of the first transducer (300). Along the direction from the second transducer (400) to the first transducer (300), with the center point of the emission structure surface of the second transducer (400) as the second origin, a third ray and a fourth ray with an included angle of α2 are formed, and the third ray and the fourth ray are symmetrical about the center line of the second transducer (400). The connection point between the first ray and the fourth ray is the first connection base point; the connection point between the second ray and the third ray is the second connection base point; the first connection base point and the second connection base point are located on the second wall surface (200); A first connection angle is formed between the first ray and the fourth ray; a second connection angle is formed between the second ray and the third ray; The point where the bisector of the first connecting angle and the bisector of the second connecting angle meet forms the first connecting point; A first sphere is formed with the first connection point as the center and the distance between the first connection point and the first connection base point or the second connection base point as the radius; the trajectory of the first spherical reflective surface (500) coincides with the trajectory of the first sphere on the second wall surface (200).

4. The ultrasonic measuring device according to claim 2, characterized in that, The angle between the centerline of the first transducer (300) and the direction from the first transducer (300) to the second transducer (400) is γ1, and γ1 satisfies: 30°≤γ1≤80°; The angle between the centerline of the second transducer (400) and the direction from the second transducer (400) to the first transducer (300) is γ2, and γ2 satisfies: 30°≤γ2≤80°; And / or, α1 satisfies: 5°≤α1≤20°; α2 satisfies: 5°≤α2≤20°.

5. The ultrasonic measuring device according to claim 3, characterized in that, The angle between the centerline of the first transducer (300) and the direction from the first transducer (300) to the second transducer (400) is 45°; the angle between the centerline of the second transducer (400) and the direction from the second transducer (400) to the first transducer (300) is 45°. The distance between the first transducer (300) and the second transducer (400) is the diameter of the first sphere.

6. The ultrasonic measuring device according to claim 1, characterized in that, The spherical reflective surface includes a second spherical reflective surface (510); The ultrasonic signal generated by the first transducer (300) is reflected by the second spherical reflective surface (510), the first wall surface (100), and the second wall surface (200) and then received by the second transducer (400); Along the direction from the first transducer (300) to the second transducer (400), with the center point of the emission structure surface of the first transducer (300) as the first origin, a fifth ray and a sixth ray with an included angle of α1 are formed, and the fifth ray and the sixth ray are symmetrical about the center line of the first transducer (300). With the midpoint of the connecting line between the first transducer (300) and the second transducer (400) as the first midpoint, and with the first midpoint as the origin, a first connecting line and a second connecting line with an included angle of α1 are formed. The connection point between the fifth ray and the first line is the fifth base point, and the connection point between the sixth ray and the second line is the sixth base point; the fifth base point and the sixth base point are located on the second wall surface (200); A third connecting angle is formed between the fifth ray and the first connecting line; a fourth connecting angle is formed between the sixth ray and the second connecting line; The point where the bisector of the third connecting angle and the bisector of the fourth connecting angle meet forms the second connecting point; With the second connection point as the center and the distance between the second connection point and the fifth or sixth base point as the radius, a second sphere is formed; the trajectory of the second spherical reflective surface (510) coincides with the trajectory of the second sphere on the second wall surface (200).

7. The ultrasonic measuring device according to claim 6, characterized in that, The spherical reflective surface further includes a third spherical reflective surface (520); along the arrangement direction of the first transducer (300) and the second transducer (400), the second spherical reflective surface (510) and the third spherical reflective surface (520) are arranged at intervals; The ultrasonic signal generated by the first transducer (300) is reflected by the second spherical reflector (510), the first wall (100), and the third spherical reflector (520) and then received by the second transducer (400); Along the direction from the second transducer (400) to the first transducer (300), with the center point of the emission structure surface of the second transducer (400) as the second origin, a seventh ray and an eighth ray with an included angle of α2 are formed, and the seventh ray and the eighth ray are symmetrical about the center line of the second transducer (400). Using the midpoint of the line connecting the first transducer (300) and the second transducer (400) as the first midpoint, and the first midpoint as the origin, a third line and a fourth line with an included angle of α2 are formed. The connection point between the seventh ray and the third line is the seventh base point; the connection point between the eighth ray and the fourth line is the eighth base point; the seventh base point and the eighth base point are located on the second wall surface (200); A fifth connecting angle is formed between the seventh ray and the third connecting line; a sixth connecting angle is formed between the eighth ray and the fourth connecting line; The point where the bisector of the fifth connecting angle and the bisector of the sixth connecting angle meet forms the third connecting point; A third sphere is formed with the third connection point as the center and the distance between the third connection point and the seventh or eighth base point as the radius; the trajectory of the third spherical reflective surface (520) coincides with the trajectory of the third sphere on the second wall (200).

8. The ultrasonic measuring device according to claim 7, characterized in that, The first wall surface (100) has a fourth spherical reflective surface (530); The ultrasonic signal generated by the first transducer (300) is reflected by the second spherical reflector (510), the fourth spherical reflector (530), and the third spherical reflector (520) and then received by the second transducer (400); Along the height direction of the ultrasonic measuring device, with the first midpoint as the top point of the sphere and the diameter of the second sphere or the third sphere as the diameter, a fourth sphere is formed; the trajectory of the fourth spherical reflective surface (530) and the trajectory of the fourth sphere on the first wall surface (100) coincide.

9. An ultrasonic measuring device, characterized in that, include: A first wall surface (100) is provided with a first transducer (300) and a second transducer (400) spaced apart. The first transducer (300) and the second transducer (400) are symmetrically arranged with the parallel line of the height direction of the ultrasonic measuring device as the axis of symmetry. The second wall surface (200) is disposed opposite to the first wall surface (100); A portion of the first wall surface (100) is recessed in a direction away from the second wall surface (200) to form a fifth spherical reflective surface (540); The ultrasonic signal generated by one of the first transducer (300) and the second transducer (400) is reflected by the second wall (200) and the fifth spherical reflective surface (540) and then received by the other of the first transducer (300) and the second transducer (400).

10. The ultrasonic measuring device according to claim 9, characterized in that, Along the direction from the first transducer (300) to the second transducer (400), with the center point of the emission structure surface of the first transducer (300) as the first origin, a ninth ray and a tenth ray with an included angle of α1 are formed. The ninth ray and the tenth ray are symmetrical about the center line of the first transducer (300). The connection point between the ninth ray and the second wall surface (200) is the ninth base point; the connection point between the tenth ray and the second wall surface (200) is the tenth base point; Using a line passing through the ninth base point and parallel to the height direction of the ultrasonic measuring device as a mirror line, draw a symmetrical ray to form the eleventh ray. Using a line passing through the tenth base point and parallel to the height direction of the ultrasonic measuring device as a mirror line, draw a symmetrical ray to form the twelfth ray; Along the direction from the second transducer (400) to the first transducer (300), with the center point of the emission structure surface of the second transducer (400) as the second origin, a thirteenth ray and a fourteenth ray with an included angle of α2 are formed. The thirteenth ray and the fourteenth ray are symmetrical about the center line of the second transducer (400). The connection point between the thirteenth ray and the second wall surface (200) is the thirteenth base point; the connection point between the fourteenth ray and the second wall surface (200) is the fourteenth base point. Using the line passing through the thirteenth base point and parallel to the height direction of the ultrasonic measuring device as a mirror line, draw the symmetrical ray of the thirteenth ray to form the fifteenth ray; Using the line passing through the fourteenth base point and parallel to the height direction of the ultrasonic measuring device as a mirror line, draw the symmetrical ray of the fourteenth ray to form the sixteenth ray; The connection point of the eleventh ray and the sixteenth ray forms a third connection point, and the connection point of the twelfth ray and the fifteenth ray forms a fourth connection point; both the third connection point and the fourth connection point are located on the first wall surface (100); both the third connection point and the fourth connection point are located on the first wall surface (100); A seventh connecting angle is formed between the eleventh ray and the sixteenth ray; an eighth connecting angle is formed between the twelfth ray and the fifteenth ray; The point where the bisector of the seventh connecting angle and the bisector of the eighth connecting angle meet forms the fourth connecting point; A fourth sphere is formed with the fourth connection point as the center and the distance between the fourth connection point and the third connection base point or the fourth connection base point as the radius; the trajectory of the fifth spherical reflective surface (540) coincides with the trajectory of the fourth sphere on the first wall surface (100).

11. An ultrasonic gas meter, comprising the ultrasonic metering device according to any one of claims 1-10.

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