CN216433189U - Ultrasonic transducer performance testing device - Google Patents

Abstract

The utility model provides an ultrasonic transducer performance testing device, a testing main body comprises a shell with a cavity, and an air inlet pipeline and an air outlet pipeline which are communicated with the cavity are arranged at the opposite two ends of the shell; the cavity is internally provided with a first mounting seat for mounting the first ultrasonic transducer and a second mounting seat for mounting the second ultrasonic transducer, and the first mounting seat and the second mounting seat are positioned at the same side of the cavity and are arranged in a rotating way relative to the shell. The cavity is internally provided with a reflecting piece which is arranged opposite to the first mounting seat and the second mounting seat, the reflecting piece is arranged opposite to the shell in a moving way, and the reflecting piece reflects the ultrasonic signal sent by the first ultrasonic transducer to the second ultrasonic transducer. The utility model provides a testing arrangement not only can measure the performance that has ultrasonic transducer under the flow, and the testing result is more accurate moreover.

Description

Ultrasonic transducer performance testing device

Technical Field

The utility model relates to an ultrasonic transducer's test technical field, in particular to ultrasonic transducer capability test device.

Background

The ultrasonic transducer is a core component of the ultrasonic flowmeter, can realize electric and acoustic signal conversion, can be applied to measurement of flow of gas media such as natural gas and the like, and the signal quality of the ultrasonic transducer determines the metering performance of the gas ultrasonic flowmeter.

Because the gas medium such as natural gas is highly dangerous, the flow test of the natural gas needs to be carried out in a specific pipeline or a sealed state, so that the performance parameters of the ultrasonic transducer under the actual application gas medium such as natural gas are difficult to directly test through external equipment such as an oscilloscope and the like. In some existing testing devices for testing the performance of the ultrasonic transducer, practical application gas media can be introduced into the testing devices through the closable gas storage pressure tank, so that relevant performance parameters of the ultrasonic transducer can be tested in the practical application gas media in the testing devices.

However, the accuracy of the performance parameters of the ultrasonic transducer measured in the test device is low, and the performance parameters of the ultrasonic transducer under the flow cannot be measured.

SUMMERY OF THE UTILITY MODEL

The utility model provides an ultrasonic transducer capability test device not only can measure the performance that has ultrasonic transducer under the flow, and the testing result is more accurate moreover.

The utility model provides an ultrasonic transducer performance testing device, this testing arrangement includes the test main part, the test main part includes the casing that has the cavity, the relative both ends of casing have with inlet line and the air outlet pipe way that the cavity is linked together, the mount pad has in the cavity, the mount pad includes the first mount pad of installation first ultrasonic transducer and the second mount pad of installation second ultrasonic transducer, first mount pad with the second mount pad is located the homonymy of cavity, first mount pad with the second mount pad rotate the setting for the casing;

the cavity is internally provided with a reflecting piece, the reflecting piece is arranged opposite to the first mounting seat and the second mounting seat so as to reflect an ultrasonic signal sent by the first ultrasonic transducer to the second ultrasonic transducer, and the reflecting piece is arranged opposite to the shell in a moving mode.

In an alternative embodiment, the first mounting base has a first mounting surface on which the first ultrasonic transducer is mounted, the second mounting base has a second mounting surface on which the second ultrasonic transducer is mounted, the reflector has a reflection surface, the reflection surface is disposed opposite to the first mounting surface and the second mounting surface, and the second mounting surface is located on a reflection path of the reflection surface.

In an alternative embodiment, the first and second mounting seats are arranged in sequence in the chamber along the direction of flow of the medium in the chamber.

In an alternative embodiment, the testing device includes a fixing component, one end of the fixing component is connected with the top wall of the cavity, and the other end of the fixing component is movably connected with the mounting seat.

In an alternative embodiment, the testing device comprises an angle adjusting assembly, part of the structure of the angle adjusting assembly extends into the cavity and is connected with the mounting seat, and the mounting seat is driven by the angle adjusting assembly to rotate relative to the shell.

In an optional implementation manner, the angle adjusting assembly includes a movable main rod and two movable auxiliary rods, two of the movable auxiliary rods are hinged to the movable main rod and are movably connected with the first mounting seat and the second mounting seat respectively, the movable main rod is movably disposed relative to the housing, and the movable auxiliary rods are driven by the movable main rod to move relative to the first mounting seat and the second mounting seat so as to drive the first mounting seat and the second mounting seat to rotate relative to the housing.

In an alternative embodiment, the movable main rod is movably arranged relative to the housing along a first direction, and a plane of the first direction is perpendicular to a flowing direction of the medium in the cavity;

and/or the movable main rod extends out of the cavity in the direction deviating from the mounting seat and is connected with the shell in a sealing manner.

In an alternative embodiment, the two secondary moving rods are respectively connected with the first mounting seat and the second mounting seat in a sliding manner and driven by the main moving rod to move on the first mounting seat and the second mounting seat relative to the main moving rod;

and/or the two auxiliary moving rods are symmetrically arranged relative to the main moving rod.

In an optional embodiment, the first mounting seat and the second mounting seat are provided with sliding grooves on a surface facing away from the reflecting member, the extending direction of the sliding grooves is the same as the flowing direction of the medium in the cavity, and the end portions of the secondary moving rods are embedded in the sliding grooves and slidably connected with the sliding grooves.

In an optional implementation manner, the test main body further includes a reflection device, the reflection device includes a fixing seat, an adjusting member, and the reflection member, the reflection member is connected to the fixing seat through the adjusting member, and the reflection member is movably disposed relative to the housing under the driving of the adjusting member.

In an alternative embodiment, the reflective element is movable relative to the housing in a first direction upon actuation of the adjustment element.

In an alternative embodiment, the adjusting member is disposed between the reflecting member and the fixing base, and the adjusting member is rotatably disposed relative to the reflecting member about an axial direction of the adjusting member to drive the reflecting member to move relative to the housing in the first direction.

In an optional embodiment, a first valve body is arranged on the air inlet pipeline, and a second valve body is arranged on the air outlet pipeline.

The utility model provides an ultrasonic transducer capability test device, at first through set up the test main part in testing arrangement, the test main part is including the casing that has the cavity to set up the air inlet pipeline and the gas outlet pipeline that are linked together with the cavity at the relative both ends of casing, can form the passageway that supplies medium one-way flow like this in testing arrangement, thereby can test ultrasonic transducer's performance under having the flow, the test result is more accurate. Secondly, because first mount pad and second mount pad are located the homonymy of cavity, and set up the reflector in the cavity, can make the signal that matches first ultrasonic transducer and second ultrasonic transducer comparatively unanimous like this, help further improving the accuracy of test result. Finally, because first mount pad and second mount pad rotate the setting for the casing in the cavity, and the reflector removes the setting relative to the casing, when guaranteeing that testing arrangement tests ultrasonic transducer's performance like this, can also carry out the influence test of ultrasonic transducer installation angle to the signal. Therefore, the testing device provided by the embodiment can measure the performance of the ultrasonic transducer under the flow, and the detection result is more accurate.

In addition to the technical problems, technical features constituting technical solutions, and advantageous effects brought by the technical features of the technical solutions described above, further detailed descriptions will be made in specific embodiments for other technical problems, technical features included in technical solutions, and advantageous effects brought by the technical features that can be solved by the display structure and the interactive tablet provided by the embodiments of the present invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic structural diagram of a testing apparatus in the related art;

fig. 2 is a first schematic view illustrating an assembly of a housing, an air inlet pipeline and an air outlet pipeline in a testing device according to an embodiment of the present invention;

fig. 3 is a second schematic view illustrating an assembly of the casing, the air inlet pipeline and the air outlet pipeline in the testing device according to the embodiment of the present invention;

fig. 4 is a schematic structural diagram of a testing apparatus according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a test subject at a first viewing angle according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a test subject at a second viewing angle according to an embodiment of the present invention.

Description of reference numerals:

10-a test subject; 11-a housing; 111-a cavity; 1111-top wall; 1112-mounting holes; 1113-outlet hole; 112-a tube section body; 113-side cover;

12-a first mount; 121-a first mounting surface; 122-a chute; 123-a connection point;

13-a second mount; 131-a second mounting surface;

14-a fixed component; 141-a first fixing bar; 142-a second fixing bar;

15-an angle adjustment assembly; 151-moving the main rod; 152-moving the secondary rod; 153-a slide; 154-a fastener; 155-a first seal;

16-a reflecting means; 161-a reflector; 1611-a reflective surface; 162-a fixed seat; 163-an adjustment member;

17-a second seal;

20-an air intake line; 21-a first valve body;

30-an air outlet pipeline; 31-a second valve body;

40-a first ultrasonic transducer; 41-signal line; 50-a second ultrasonic transducer;

60-gas storage pressure tank; 61-air inlet connection; 62-a gas outlet fitting;

70-a top transducer;

80-bottom transducer.

Detailed Description

As described in the background art, chinese patent publication No. CN209014067U discloses a performance testing apparatus for a gas-medium ultrasonic transducer, which, as shown in fig. 1, can introduce a practical gas medium (i.e. real gas) into a gas storage pressure tank 60 by using a gas storage pressure tank 60 that can be closed, so that the test of the relevant performance parameters of the gas-medium ultrasonic transducer is performed in the practical gas medium. The top end and the bottom end of the testing device in the gas storage pressure tank 60 are respectively provided with a top end gas medium ultrasonic transducer (called top transducer 70 for short) and a bottom end gas medium ultrasonic transducer (called bottom transducer 80 for short), wherein the top end transducer 70 and the bottom end transducer 80 are oppositely arranged in the gas storage pressure tank 60.

However, in this testing apparatus, the wiring of the bottom transducer 80 bypasses the entire flow channel in the gas storage pressure tank 60, so that the signal line of the bottom transducer 80 is too long and is easily interfered, which results in a low accuracy of the signal of the bottom transducer 80. The signal lines of the top transducer 70 and the bottom transducer 80 are longer and shorter, so that the situation that the signals received by the top transducer 70 and the bottom transducer 80 are inconsistent is easy to occur, the performance test of the testing device on the air-dielectric ultrasonic transducer is influenced, and the accuracy of the test result is lower.

In addition, as shown in fig. 1, since the air inlet connector 61 and the air outlet connector 62 of the testing device are located on the same side of the testing device, a one-way flow channel for the medium to flow cannot be formed in the air storage pressure tank 60, so that the testing device cannot test the relevant performance of the air-dielectric ultrasonic transducer under the condition of flow (i.e. the medium has a certain flow velocity).

In view of this, the embodiment of the utility model provides an ultrasonic transducer capability test device, not only can measure the performance that has ultrasonic transducer under the flow, survey the result moreover more accurate. Firstly, a channel for the medium to flow in a single direction is arranged in the testing device, so that the performance of the ultrasonic transducer can be tested under the condition of flow (namely medium flow), and the testing result is more accurate. Secondly, because first mount pad and second mount pad are located testing arrangement's homonymy, and set up the reflector in testing arrangement, can make the signal that matches first ultrasonic transducer and second ultrasonic transducer comparatively unanimous like this, help further improving the accuracy of test result. Finally, the first mounting seat and the first mounting seat are arranged in a rotating mode relative to the shell of the testing device, and the reflecting piece is arranged in a moving mode relative to the shell, so that the testing device can test the performance of the ultrasonic transducer, and meanwhile the influence of the mounting angle of the ultrasonic transducer on signals can be tested.

The medium may include, but is not limited to, natural gas, coal gas, or other gases capable of flow measurement using ultrasonic transducers.

The structure of the ultrasonic transducer performance testing apparatus of the present embodiment is further described below with reference to the accompanying drawings.

Examples

Fig. 2 and 3 show different assembly diagrams of the housing and the inlet and outlet lines, respectively, in a test device, wherein fig. 3 shows an assembly diagram of a first and second valve body in the test device.

Referring to fig. 2 and 3, a schematic pipeline connection diagram of an ultrasonic transducer performance testing device is provided. Referring to fig. 2 and 3, the test device may include a test body 10, the test body 10 may include a housing 11 having a cavity 111, and opposite ends of the housing 11 have an inlet conduit 20 and an outlet conduit 30 communicating with the cavity 111, such that the test device has a channeled media flow conduit section, so that a passage for unidirectional flow of the medium can be formed in the test device by the inlet line 20, the housing 11 and the outlet line 30, so that most of the medium can enter the shell 11 through the inlet pipe, and is discharged from the outlet pipe 30 through the cavity 111, forming a stable and unidirectional flowing medium flow in the testing device so as to test the performance of the ultrasonic transducer under the conditions of gas realization and flow through the testing device, the test result is more accurate, and data closer to the actual state is provided for subsequent gas meter development.

Wherein the housing 11 may be a pipe section having a square, circular or other shape. Illustratively, the inlet and outlet gas lines 20, 30 may be round, square, or other shaped lines. As shown in fig. 2 and 3, the housing 11 in this embodiment is a pipe section having a square cavity 111 (such as a rectangular parallelepiped cavity 111), which can facilitate stable placement of the housing 11 and the testing device.

As shown in fig. 2, the housing 11 may be composed of a pipe segment main body 112 and a side cover 113, and the side cover 113 may be connected to an end of the pipe segment main body 112 by a plurality (e.g., 3 or 4, etc.) of fasteners (e.g., bolts or screws, etc.), so that the side cover 113 is detachably connected to the pipe segment main body 112. The outlet pipe 30 can be connected to the side cover 113, and is covered on the end of the pipe section main body 112 through the side cover 113, and forms the cavity 111 of the housing 11 together with the pipe section main body 112. This may be done by opening side cover 113, changing the configuration of cavity 111 (e.g., changing the ultrasonic transducers) to test different ultrasonic transducers, or changing other structural components in cavity 111 to test the ultrasonic transducers on other structural racks. Correspondingly, when the test is needed, the fastener can be screwed through the upper side cover 113, and the test can be used after leak detection.

As shown in fig. 3, the inlet pipe 20 is provided with a first valve body 21, and the outlet pipe 30 is provided with a second valve body 31, so that the gas flow state and direction can be controlled by controlling the first valve body 21 and the second valve body 31. Illustratively, the first valve body 21 is controlled to allow the medium to enter the cavity 111, and the second valve body 31 is controlled to allow the medium in the cavity 111 to be discharged out of the testing device.

It should be noted that, when the testing device performs a static test on the ultrasonic transducer, the first valve body 21 and the second valve body 31 may be closed after the cavity 111 is filled with a medium such as natural gas, so that the testing device reaches a sealed state. When the testing device tests the flow of the ultrasonic transducer, the air inlet pipeline 20 and the air outlet pipeline 30 are connected to a flow standard device for testing the ultrasonic transducer, and the first valve body 21 and the second valve body 31 are opened, so that the related performance parameters of the ultrasonic transducer under dynamic (namely, flow) conditions can be tested through the testing device.

Fig. 4 is a schematic structural diagram of a testing apparatus provided by an embodiment of the present invention, and fig. 5 is a schematic structural diagram of a testing main body provided by an embodiment of the present invention under a first viewing angle.

Referring to fig. 4 and 5, the cavity 111 has a mounting seat therein, and the mounting seat may include a first mounting seat 12 for mounting the first ultrasonic transducer 40 and a second mounting seat 13 for mounting the second ultrasonic transducer 50, and the first mounting seat 12 and the second mounting seat 13 may be located on the same side of the cavity 111. The first and second mounts 12 and 13 may be mounted reflectively within the cavity 111. The mounting base may also be referred to as a mounting bracket or a mounting frame of the ultrasonic transducer. Therefore, the first ultrasonic transducer 40 to be tested and the second ultrasonic transducer 50 to be tested can be fixed on the same side of the cavity 111 through the first mounting seat 12 and the second mounting seat 13 respectively, so that the lengths of the signal lines 41 of the first ultrasonic transducer 40 and the second ultrasonic transducer 50 are shortened, the distances from the first ultrasonic transducer 40 and the second ultrasonic transducer 50 to the cavity 111 are consistent, the line lengths of the signal line 41 of the first ultrasonic transducer 40 and the second ultrasonic transducer 50 are close, the interference caused by overlong signal lines 41 of the ultrasonic transducers in a testing device can be avoided, the signals matched with the first ultrasonic transducer 40 and the second ultrasonic transducer 50 are consistent, and the accuracy of a testing result is further improved.

The first mounting base 12 and the second mounting base 13 are rotatably disposed relative to the housing 11, and a reflecting member 161 is disposed in the cavity 111, for example, the reflecting member 161 includes but is not limited to a reflecting plate. The reflector 161 is arranged opposite to the first mounting seat 12 and the second mounting seat 13 to reflect the ultrasonic signal emitted by the first ultrasonic transducer 40 to the second ultrasonic transducer 50, the reflector 161 is movably arranged relative to the housing 11 so as to adjust the height of the reflector 161 in the cavity 111, and further adjust the distance between the reflector 161 and the first mounting seat 12 and the second mounting seat 13, and the mounting seats with different mounting angles are adapted so that when the first mounting seat 12 and the second mounting seat 13 rotate relative to the housing 11, the ultrasonic signal emitted by the first ultrasonic transducer 40 can be reflected to the second ultrasonic transducer 50 through the reflector 161. Like this at first mount pad 12 and second mount pad 13 can be located the homonymy of cavity 111, when guaranteeing that testing arrangement tests ultrasonic transducer's performance through reflector 161, not only can carry out the influence test of ultrasonic transducer installation angle to the signal, but also can be convenient for realize the influence test of the reflection material of different plane of reflection 1611 to ultrasonic transducer received signal.

In some embodiments, the first and second mounts 12 and 13 may be disposed on a top wall 1111 or a side wall of the cavity 111. In this embodiment, the first mounting seat 12 and the second mounting seat 13 are disposed on the top wall 1111 of the cavity 111, so that the first mounting seat 12, the second mounting seat 13 and the reflector 161 are fixed in the cavity 111.

Wherein, the testing device may include a fixing component 14, the fixing component 14 may be disposed in the cavity 111, one end of the fixing component 14 may be connected to the top wall 1111 of the cavity 111, and the other end of the fixing component 14 may be movably connected to the mounting base. Wherein, the first mounting seat 12 and the second mounting seat 13 can be disposed on the top wall 1111 of the cavity 111 through a fixing component 14. Thus, while the first mounting seat 12 and the second mounting seat 13 are fixed on the top wall 1111 of the cavity 111 through the fixing assembly 14, the first mounting seat 12 and the second mounting seat 13 can be conveniently rotated in the cavity 111 relative to the housing 11 to change the installation angle of the first ultrasonic transducer 40 and the second ultrasonic transducer 50 in the cavity 111, so as to test the influence of the installation angle of the ultrasonic transducers on the signal in the testing device.

The structure of the fixing assembly 14 and its connection to the mounting base will be further described below by taking the mounting of the first mounting base 12 as an example.

Fig. 6 is a schematic structural diagram of a test subject at a second viewing angle according to an embodiment of the present invention. Fig. 6 is a schematic structural view of the first mounting seat in the test main body in fig. 5 from another viewing angle.

Illustratively, referring to fig. 5 and 6, the fixing assembly 14 may include a first fixing rod 141 and a second fixing rod 142, and illustratively, the first fixing rod 141 and the second fixing rod 142 may be metal rods or non-metal rods. The first fixing lever 141 and the second fixing lever 142 may be located at opposite sides of the first mount 12. One end of each of the first fixing rod 141 and the second fixing rod 142 is connected to the top wall 1111 of the cavity 111, and the other end of each of the first fixing rod 141 and the second fixing rod 142 is movably connected to the side wall of the first mounting seat 12. Wherein, a connection point 123 is formed at the connection position of the first fixing rod 141 and the second fixing rod 142 and the first installation seat 12, so that the first installation seat 12 and the second installation seat 13 can rotate around the connection point 123 in the cavity 111 relative to the housing 11.

It should be noted that, reference may be made to the first mounting seat 12 for fixing the second mounting seat 13 in the cavity 111, and in this embodiment, no further description is made on the fixing of the second mounting seat 13 in the cavity 111.

Wherein the first mounting seat 12 and the second mounting seat 13 are arranged in the cavity 111 along the flow direction of the medium in the cavity 111, so as to measure the performance parameters of the first ultrasonic transducer 40 and the second ultrasonic transducer 50 by the testing device. In this embodiment, the arrangement manner of the first mounting seat 12 and the second mounting seat 13 in the cavity 111 is not further limited.

The structure of the testing device in this embodiment will be further described below by taking an example in which the first mounting seat 12 and the second mounting seat 13 are sequentially disposed in the cavity 111 along the flowing direction of the medium in the cavity 111.

In some embodiments, the first and second mounting seats 12 and 13 may be symmetrically disposed on the top wall 1111 of the cavity 111, or the first and second mounting seats 12 and 13 may be asymmetrically disposed on the top wall 1111 of the cavity 111. In this embodiment, the first mounting seat 12 and the second mounting seat 13 are symmetrically disposed on the top wall 1111 of the cavity 111, which not only facilitates controlling the mounting angles of the first mounting seat 12 and the second mounting seat 13 in the cavity 111, but also facilitates disposing the reflector 161 in the cavity 111.

In order to facilitate the connection between the first ultrasonic transducer 40 and the second ultrasonic transducer 50 and an external device, an outlet hole 1113 is further provided on the top wall 1111 of the cavity 111 at the first ultrasonic transducer 40 and the second ultrasonic transducer 50, so that the signal line 41 of the first ultrasonic transducer 40 and the second ultrasonic transducer 50 can extend out of the housing 11 through the outlet hole 1113, and be connected to an external device, such as a signal generator or an oscilloscope, so as to send an excitation signal to the first ultrasonic transducer 40 through the signal generator, so that the first ultrasonic transducer 40 sends an ultrasonic signal during testing, and transmit the received ultrasonic signal to the oscilloscope through the second ultrasonic transducer 50, so as to test the real performance parameters of the first ultrasonic transducer 40 and the second ultrasonic transducer 50 in real time.

It should be noted that the housing 11 may further be provided with a second sealing member 17 at the outlet hole 1113 for sealing the outlet hole 1113, and the second sealing member 17 may include, but is not limited to, a sealing glue, a sealing ring, or other sealing structure. The sealing performance of the test body 10 and the test device is realized by the second sealing member 17, so that leakage of a medium such as natural gas in the test is prevented, and the safety of the test is ensured.

The first mounting base 12 has a first mounting surface 121 on which the first ultrasonic transducer 40 is mounted, the second mounting base 13 has a second mounting surface 131 on which the second ultrasonic transducer 50 is mounted, the reflector 161 has a reflecting surface 1611, and the reflecting surface 1611 is disposed opposite to the first mounting surface 121 and the second mounting surface 131. Wherein, a surface of the reflector 161 facing the first mounting surface 121 and the second mounting surface 131 may be provided with a reflective material to constitute a reflective surface 1611 of the reflector 161. The ultrasonic signal emitted by the first ultrasonic transducer 40 mounted on the first mounting base 12 can be transmitted to the reflection surface 1611 and reflected to the second ultrasonic transducer 50 through the reflection surface 1611, so as to be transmitted to an external device of the testing device, such as an oscilloscope, through the second ultrasonic transducer 50, so as to test the real performance parameters of the first ultrasonic transducer 40 and the second ultrasonic transducer 50 in real time.

The second mounting surface 131 may be located on a reflection path of the reflection surface 1611, so as to reflect the ultrasonic signal emitted by the first ultrasonic transducer 40 to the second ultrasonic transducer 50 through the reflection surface 1611.

Referring to fig. 4 to 6, the testing apparatus may include an angle adjustment assembly 15, and a part of the angle adjustment assembly 15 may extend into the cavity 111 and be connected to a mounting seat, and the mounting seat may rotate relative to the housing 11 under the driving of the angle adjustment assembly 15. Thus, by controlling the partial structure of the angle adjustment assembly 15 outside the cavity 111, the mounting seats such as the first mounting seat 12 and the second mounting seat 13 can be driven to rotate in the cavity 111 around the connection point 123 relative to the housing 11, so as to change the arrangement angles of the first mounting surface 121 and the second mounting surface 131 in the cavity 111, and thus, the adjustment of the mounting angles of the mounting seats and the first ultrasonic transducer 40 and the second ultrasonic transducer 50 can be realized.

Wherein the angle adjusting assembly 15 may be located on a side of the mounting base opposite to the reflection member 161. This can reduce the influence of the angle adjustment assembly 15 on the flow of the medium such as natural gas in the cavity 111 as much as possible while achieving the adjustment of the mounting seat and the mounting angle of the first ultrasonic transducer 40 and the second ultrasonic transducer 50.

In some embodiments, referring to fig. 4 to 6, the angle adjustment assembly 15 may include a movable main rod 151 and two movable auxiliary rods 152, the two movable auxiliary rods 152 are hinged to the movable main rod 151 and movably connected to the first mounting seat 12 and the second mounting seat 13, respectively, the movable main rod 151 is movably disposed relative to the housing 11, and the movable auxiliary rods 152 are driven by the movable main rod 151 to move relative to the first mounting seat 12 and the second mounting seat 13 so as to drive the first mounting seat 12 and the second mounting seat 13 to rotate relative to the housing 11. Thus, when the movable main rod 151 is controlled to move relative to the housing 11 by an external force, the two movable auxiliary rods 152 will also move relative to the first mounting seat 12 and the second mounting seat 13 on the first mounting seat 12 and the second mounting seat 13 along with the movement of the movable main rod 151 under the driving of the movable main rod 151, and further drive the first mounting seat 12 and the second mounting seat 13 to synchronously rotate around the connection point 123 in the cavity 111, so as to ensure the symmetrical arrangement of the first mounting seat 12 and the second mounting seat 13 in the cavity 111.

The movable main rod 151 is movably disposed relative to the housing 11 along a first direction, a plane of the first direction is perpendicular to a flowing direction of the medium in the cavity 111, wherein the first direction can also be understood as a Y direction shown in fig. 5. The two moving sub-rods 152 are slidably coupled to the first and second mounting seats 12 and 13, respectively, and are moved on the first and second mounting seats 12 and 13 relative to the moving main rod 151 by the moving main rod 151. Thus, when the movable main rod 151 moves towards one side of the housing 11 along the first direction, the two movable auxiliary rods 152 will also move towards a direction away from the movable main rod 151 on the surfaces of the first mounting seat 12 and the second mounting seat 13 opposite to the first mounting surface 121 and the second mounting surface 131, respectively, so as to drive the first mounting seat 12 and the second mounting seat 13 to synchronously rotate around the connection point 123 in the cavity 111 (as shown in fig. 5 and 6), thereby realizing the simultaneous adjustment of the mounting angles of the first ultrasonic transducer 40 and the second ultrasonic transducer 50 by moving the main rod 151.

Accordingly, when the movable main rod 151 moves towards the side away from the housing 11 along the first direction, under the driving of the movable main rod 151, the two movable auxiliary rods 152 will also move towards the direction of the movable main rod 151 on the surfaces of the first mounting seat 12 and the second mounting seat 13 opposite to the first mounting surface 121 and the second mounting surface 131, respectively, and the two movable auxiliary rods 152 approach each other to drive the first mounting seat 12 and the second mounting seat 13 to synchronously rotate around the connection point 123 in the cavity 111 towards the rotation direction opposite to the rotation direction shown in fig. 5, thereby realizing the simultaneous adjustment of the mounting angles of the first ultrasonic transducer 40 and the second ultrasonic transducer 50 by moving the main rod 151.

The two moving sub-rods 152 may be symmetrically disposed with respect to the moving main rod 151, and the lengths of the two moving sub-rods 152 may be the same. The movable main rod 151 may be disposed between the first mounting seat 12 and the second mounting seat 13, so that the movable main rod 151 can help to ensure the uniformity of the mounting angles of the first mounting seat 12 and the second mounting seat 13 in the cavity 111, so as to facilitate the disposition of the reflector 161.

For example, as shown in fig. 6, the projections of the two sub-moving bars 152 on the main moving bar 151 may coincide with the extension line of the main moving bar 151. This enables the rotation of the first mount 12 and the second mount 13 in the housing 11 to be more stabilized while achieving simultaneous adjustment of the mounting angles of the first ultrasonic transducer 40 and the second ultrasonic transducer 50 by the one movable main rod 151 and the two movable sub-rods 152. Alternatively, the two sub-moving rods 152 may be asymmetrically disposed with respect to the main moving rod 151. In this embodiment, the arrangement of the two moving auxiliary rods 152 with respect to the moving main rod 151 is not limited, and it is sufficient that the installation angles of the first ultrasonic transducer 40 and the second ultrasonic transducer 50 can be adjusted simultaneously by using one moving main rod 151 and two moving auxiliary rods 152.

In order to facilitate the movement of the moving auxiliary rod 152 on the mounting seat, as shown in fig. 5 and 6, the first mounting seat 12 and the second mounting seat 13 are respectively provided with a sliding groove 122 on a surface facing away from the first ultrasonic transducer 40 and the second ultrasonic transducer 50, a plane of an extending direction of the sliding groove 122 is parallel to a plane of a flowing direction of the medium in the cavity 111, and an end of the moving auxiliary rod 152 may be embedded in the sliding groove 122 and slidably connected with the sliding groove 122.

It should be noted that, a certain resistance exists between the end of the moving auxiliary rod 152 and the sliding connection of the sliding chute 122, so that when the medium in the cavity 111 flows fast, the first ultrasonic transducer 40 and the second ultrasonic transducer 50 are affected and shake occurs, which further causes the signal received by the first ultrasonic transducer 40 and the second ultrasonic transducer 50 to be abnormal, and therefore when there is a flow in the cavity 111, the first ultrasonic transducer 40 and the second ultrasonic transducer 50 can be kept stable and do not shake.

Further, the end of the moving auxiliary rod 152 may be further connected with a sliding member 153 adapted to the structure of the sliding slot 122, for example, the sliding member 153 may include, but is not limited to, a pulley or a sliding block. The sliding member 153 may be embedded in the sliding groove 122, so that the frictional resistance of the moving sub-rod 152 moving in the sliding groove 122 may be reduced to facilitate the movement of the moving sub-rod 152 on the mounting seat.

Referring to fig. 4 to 6, the movable main rod 151 extends out of the cavity 111 in a direction away from the mounting seat, and is hermetically connected with the housing 11 to prevent leakage of a medium such as natural gas in a test, thereby ensuring the safety of the test.

In order to facilitate the protrusion of the movable main rod 151 out of the housing 11, a mounting hole 1112 (shown in fig. 2) is formed on a top wall 1111 of the cavity 111 for the protrusion of the movable main rod 151, and an end of the movable main rod 151 may protrude out of the housing 11 through the mounting hole 1112 and be fixed to the housing 11 by the fixing member 154.

Referring to fig. 4 to 6, the angle adjustment assembly 15 further includes a fixing member 154 located outside the cavity 111, and the movable main rod 151 is detachably coupled to the fixing member 154. The fixing member 154 is connected to the movable main rod 151 in a manner including, but not limited to, a threaded connection or a snap connection. When the fixing member 154 is threadedly coupled to the movable main rod 151, the fixing member 154 may include, but is not limited to, a fastening nut adapted to the thread of the movable main rod 151. In this way, not only the fixing of the movable main rod 151 in the cavity 111 can be achieved by the fixing member 154, but also the movable main rod 151 can be moved relative to the housing 11 along the first direction by rotating the fixing member 154, so as to achieve the adjustment of the installation angles of the first ultrasonic transducer 40 and the second ultrasonic transducer 50.

As shown in fig. 4 to 6, the testing device may further include a first sealing member 155 sealing the mounting hole 1112, and the fixing member 154 may abut on an outer surface of the housing 11 through the first sealing member 155. Illustratively, the first seal 155 may include, but is not limited to, a seal ring. Thus, by the arrangement of the first sealing member 155, the sealing performance of the test main body 10 and the test apparatus can be realized, so that leakage of a medium such as natural gas in the test can be prevented, and the safety of the test can be ensured.

Alternatively, in a possible embodiment, an angle adjusting rod may be connected to each of the first mounting seat 12 and the second mounting seat 13, one end of the angle adjusting rod may be movably disposed on the first mounting seat 12 and the second mounting seat 13 relative to the first mounting seat 12 and the second mounting seat 13, and the other end of the angle adjusting rod may extend out of the housing 11, so that the mounting angles of the first mounting seat 12 and the second mounting seat 13 are respectively adjusted by two angle adjusting rods. Wherein two angle adjustment rods may constitute the angle adjustment assembly 15 described above.

It should be noted that, for those skilled in the art, the angle adjusting assembly 15 may be derived in various structures based on the same principle as the angle adjustment of the first mounting seat 12 and the second mounting seat 13 in the embodiment. The structure of the angle adjustment assembly 15 in this embodiment is not further limited.

Referring to fig. 4 to 6, the test main body 10 further includes a reflection device 16, the reflection device 16 may include a fixing base 162, an adjustment member 163, and a reflection member 161, the reflection member 161 may be connected to the fixing base 162 through the adjustment member 163, and the reflection member 161 is movably disposed relative to the housing 11 under the driving of the adjustment member 163. Like this through regulating part 163 and fixing base 162 realize that reflector 161 is fixed in cavity 111, can also adjust the mounting height or the installation angle of reflector 161 in cavity 111 through regulating part 163 simultaneously to the mount pad of different installation angles of adaptation, so that realize the test to ultrasonic transducer performance under the real gas and have the circulation condition through testing arrangement.

The reflecting member 161 is driven by the adjusting member 163 to move in the first direction relative to the housing 11. This can adjust the installation height of the reflection member 161 in the cavity 111 by the adjustment member 163.

Referring to fig. 4 to 6, when the first mounting seat 12 and the second mounting seat 13 are symmetrically disposed in the cavity 111, the reflector 161 may be disposed in the cavity 111 in the form of water, so that the reflector 161 can be fixed in the cavity 111, and the ultrasonic signal emitted by the first ultrasonic transducer 40 can be reflected to the second ultrasonic transducer 50 through the reflector 161.

Wherein, the adjusting member 163 may be disposed between the reflecting member 161 and the fixing base 162, and the adjusting member 163 is rotatably disposed relative to the reflecting member 161 around the axial direction of the adjusting member 163 to drive the reflecting member 161 to move relative to the housing 11 in the first direction. Wherein, the adjusting member 163 can be screwed with the reflecting member 161 and the fixing base 162. Illustratively, the adjusting member 163 may include, but is not limited to, a connecting bolt or a connecting screw for fixing the reflecting member 161. Thus, as the installation angle of the ultrasonic transducer in the cavity 111 changes, the installation height of the reflecting member 161 in the cavity 111 (i.e. the distance between the reflecting surface 1611 and the fixing base 162) can be achieved by adjusting the screwing distance of the adjusting member 163 on the reflecting member 161, so that the ultrasonic transducer, such as the second ultrasonic transducer 50, can receive signals at different installation angles.

The number of the adjusting members 163 may be one or more (for example, three or four), and when the number of the adjusting members 163 is multiple, the installation angle of the reflecting member 161 in the cavity 111 may be adjusted by the multiple adjusting members 163, so as to adapt to the first mounting seat 12 and the second mounting seat 13 in an asymmetric arrangement in the cavity 111. It should be noted that, in the testing apparatus of this embodiment, the first ultrasonic transducer 40 and the second ultrasonic transducer 50 may rotate along with the first mounting seat 12 and the second mounting seat 13, so that the mounting positions of the first ultrasonic transducer 40 and the second ultrasonic transducer 50 in the cavity 111 are not fixed, and therefore, the testing apparatus of this embodiment may also test performance parameters of the ultrasonic transducers in different sound paths or other mounting manners. In addition, compared with the existing testing device (such as the structure in fig. 1), the testing device of the embodiment has the characteristics of small volume and low cost due to the fact that no refrigerating and heating structure is added, and can be carried conveniently to test the performance of the ultrasonic transducer in other scenes.

A rectifying device may be further disposed in the cavity 111 of the test main body 10, so as to obtain a relatively stable flow field in a flow test through the rectifying device, so as to improve the quality of signals received by the ultrasonic transducer.

The test method of the test apparatus in this embodiment is further described below.

Before testing, the structural characteristics in the cavity 111 of the test body 10 are adjusted according to the experimental requirements. Adjusting the structural characteristics in the cavity 111 of the test body 10 specifically includes: on one hand, the installation angle of the installation seat is selected and fixed, so that the installation angle of the ultrasonic transducer is fixed, on the other hand, the height of the reflection surface 1611 in the cavity 111 is adjusted, the transmission path of ultrasonic signals such as ultrasonic waves is adapted, the reflection piece 161 is fixed, and finally the side cover 113 of the test main body 10 is sealed.

When the performance of the ultrasonic transducer is tested under the condition of no flow, the first valve body 21 is closed, the second valve body 31 is opened, and the inside of the testing device is vacuumized. Then, the second valve body 31 is closed, and leak detection is performed by a pressure gauge or the like. After confirming that there is no leakage, the first valve body 21 is opened and the first valve body 21 is closed after solid gas such as natural gas is introduced. At this time, the ultrasonic transducers such as the first ultrasonic transducer 40 and the second ultrasonic transducer 50 are fixed at a certain angle in the cavity 111 and are in a solid state. The ultrasonic transducer is connected with an external device such as a signal generator, an oscilloscope and the like, namely, the real signal of the ultrasonic transducer under real atmosphere is tested. After use, the first valve body 21 and the second valve body 31 are opened, and the chamber 111 is filled with other safe gas such as nitrogen, so as to discharge the solid gas in the testing device.

When the performance test is performed on the ultrasonic transducer under the condition of flow, the test can be performed only by connecting the air inlet pipeline 20 and the air outlet pipeline 30 to a standard flow test path of solid gas such as natural gas and opening the first valve body 21 and the second valve body 31. After the test is completed, the first valve body 21 and the second valve body 31 are opened, and the chamber 111 is filled with other safe gas such as nitrogen, so that the solid gas in the test device can be discharged.

It should be noted that, in some embodiments, the first ultrasonic transducer 40 and the second ultrasonic transducer 50 can also test the flow rate of the medium in the testing device and the real performance parameters of the ultrasonic transducers in real air by means of correlation. In this case, at the same time, the first ultrasonic transducer 40 and the second ultrasonic transducer 50 may be excited by an electrical signal from the signal generator, and the first ultrasonic transducer 40 and the second ultrasonic transducer 50 start to vibrate and emit ultrasonic waves simultaneously. If the first ultrasonic transducer 40 emits ultrasonic waves along the direction of the medium flow and the second ultrasonic transducer 50 emits ultrasonic waves against the direction of the medium flow, the second ultrasonic transducer 50 will receive the ultrasonic waves emitted by the first ultrasonic transducer 40 in one step and the ultrasonic waves emitted by the second ultrasonic transducer 50 in the next step of the first ultrasonic transducer 40. And simultaneously recording the propagation time of the ultrasonic waves in two directions, calculating the time difference, and combining the structural parameters of the testing device to obtain the flow of the medium at the moment so as to test the real performance parameters of the ultrasonic transducer under real atmosphere.

The utility model provides a testing arrangement not only can measure the performance that has ultrasonic transducer under the flow, and the testing result is more accurate moreover. In addition, the utility model discloses a testing arrangement still has characteristics small, with low costs, can portable to test his performance of ultrasonic transducer under the scene.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "comprises" and "comprising," and any variations thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, display structure, product, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, product, or apparatus.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral to one another; either directly or indirectly through intervening media, such as through internal communication or through an interaction between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. The ultrasonic transducer performance testing device is characterized by comprising a testing main body, wherein the testing main body comprises a shell with a cavity, an air inlet pipeline and an air outlet pipeline which are communicated with the cavity are arranged at two opposite ends of the shell, an installation seat is arranged in the cavity and comprises a first installation seat for installing a first ultrasonic transducer and a second installation seat for installing a second ultrasonic transducer, the first installation seat and the second installation seat are positioned at the same side of the cavity, and the first installation seat and the second installation seat are rotatably arranged relative to the shell;

the cavity is internally provided with a reflecting piece, the reflecting piece is arranged opposite to the first mounting seat and the second mounting seat so as to reflect an ultrasonic signal sent by the first ultrasonic transducer to the second ultrasonic transducer, and the reflecting piece is arranged opposite to the shell in a moving mode.

2. The test apparatus of claim 1, wherein the first mounting block has a first mounting surface for mounting the first ultrasonic transducer, the second mounting block has a second mounting surface for mounting the second ultrasonic transducer, the reflector has a reflective surface disposed opposite the first mounting surface and the second mounting surface, and the second mounting surface is located in a reflective path of the reflective surface.

3. The testing device of claim 1, wherein the first mounting seat and the second mounting seat are arranged in sequence within the cavity along a flow direction of a medium within the cavity.

4. The testing device of claim 1, comprising a fixing component, wherein one end of the fixing component is connected with the top wall of the cavity, and the other end of the fixing component is movably connected with the mounting seat.

5. The testing device of any one of claims 1-4, comprising an angle adjustment assembly, part of the structure of which extends into the cavity and is connected to the mounting block, the mounting block being rotatable relative to the housing upon actuation of the angle adjustment assembly.

6. The testing device as claimed in claim 5, wherein the angle adjusting assembly includes a movable main rod and two movable sub-rods, the two movable sub-rods are hinged to the movable main rod and movably connected to the first mounting seat and the second mounting seat respectively, the movable main rod is movably disposed relative to the housing, and the movable sub-rods are driven by the movable main rod to move relative to the first mounting seat and the second mounting seat so as to drive the first mounting seat and the second mounting seat to rotate relative to the housing.

7. The testing device according to claim 6, wherein the movable main rod is movably disposed relative to the housing along a first direction, the first direction lying in a plane perpendicular to a flow direction of the medium in the cavity;

and/or the movable main rod extends out of the cavity in the direction deviating from the mounting seat and is connected with the shell in a sealing manner.

8. The testing device according to claim 7, wherein the two moving auxiliary rods are respectively connected with the first mounting seat and the second mounting seat in a sliding manner and driven by the moving main rod to move on the first mounting seat and the second mounting seat relative to the moving main rod;

and/or the two auxiliary moving rods are symmetrically arranged relative to the main moving rod.

9. The testing device of any one of claims 1-4, wherein the testing body further comprises a reflection device, the reflection device comprises a fixing seat, an adjusting member, and the reflection member, the reflection member is connected with the fixing seat through the adjusting member, and the reflection member is movably arranged relative to the housing under the driving of the adjusting member.

10. The testing device of claim 9, wherein the reflective member is moved relative to the housing in a first direction upon actuation of the adjustment member.

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