CN212693059U - Novel acoustic power meter - Google Patents
Novel acoustic power meter Download PDFInfo
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- CN212693059U CN212693059U CN202021476585.1U CN202021476585U CN212693059U CN 212693059 U CN212693059 U CN 212693059U CN 202021476585 U CN202021476585 U CN 202021476585U CN 212693059 U CN212693059 U CN 212693059U
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Abstract
The utility model relates to a technical field of radiation force balance system, more specifically relates to a novel acoustic power meter. A novel acoustic power meter comprises a frame, wherein an acoustic power meter calibration system and a water circulation and oxygen content monitoring system are arranged in the frame, and wheels and a braking baffle are arranged at the bottom of the frame; the novel acoustic power meter further comprises an ultrasonic transducer, the acoustic power meter calibration system comprises an absorption target, and the ultrasonic transducer is located below or above the absorption target. The utility model is convenient to move; the water in the water tank can be degassed, and the oxygen content in the water can be monitored in real time; and the adjustment of the absorption target position is more accurate.
Description
Technical Field
The utility model relates to a technical field of radiation force balance system, more specifically relates to a novel acoustic power meter.
Background
The existing radiation force balance system is heavy in structure, does not have a movement auxiliary device, and is not beneficial to frequent movement of equipment; because the absorption target and the transducer are required to be soaked in water in the measurement process, certain requirements are required for the oxygen content, the water temperature and the like of the water in the water tank, and at present, the deaerated water can only be added into the water tank after being prepared in a laboratory, the oxygen content in the water tank cannot be monitored, and large deviation is easily introduced; when the absorption target is leveled, only a visual inspection mode can be used at present, and large errors are easy to exist; when the existing system is suitable for the condition that the transducer emits ultrasound from bottom to top, the utilized absorption target is easy to drift and unstable, and large deviation is easily caused to a measurement result; meanwhile, the water tank which is provided with the existing system and is suitable for the condition that the transducer emits ultrasound from top to bottom mainly adopts a hollowing mode, and cannot be widely suitable for the conditions of different ultrasonic transducers; in the actual measurement process, in order to make the measurement result as accurate as possible, the absorption target and the transducer need to be coaxial as much as possible, but for the current system, the evaluation can be carried out only by means of visual inspection, which can introduce great errors; and in order to protect the absorption target and make the measurement result more accurate, the distance between the absorption target and the transducer needs to be about 0.7f (f is the focal length), and the current system can only estimate the distance by means of visual observation, and some errors exist. In view of the above, the current radiation force balance system has many problems, and cannot be well and widely applied to different practical situations, so that many improvements are needed to adapt to different measuring environments and situations.
The disadvantages of the prior art are summarized as follows: the whole system is heavy in volume and does not have a movement auxiliary device, so that the frequent movement of equipment is not facilitated; the existing system has no water circulation system and an oxygen content detection device, the required deaerated water needs to be prepared from a laboratory, the oxygen content in a water tank cannot be monitored, and a large error is increased; when the existing system is suitable for the condition that the transducer emits ultrasound from bottom to top, the utilized absorption target is easy to drift and unstable, and large deviation is easily caused to a measurement result; at present, the absorption target has no leveling device and can only be evaluated in a visual inspection mode, and large errors are easy to exist in the absorption target; the water tank which is provided by the existing system and is suitable for the condition that the transducer emits ultrasonic from top to bottom mainly adopts a hollowing mode, and cannot be widely suitable for the conditions of different ultrasonic transducers; the existing system has no absorption target and transducer center alignment auxiliary device, and can only be evaluated in a visual inspection mode, so that the deviation is large; the existing system has no definite distance measuring device, can estimate the distance between the absorption target and the transducer only by means of visual inspection, and has larger deviation; the balance in the existing system is fixed, so that the adjusting range of the absorption target is relatively small, and the adjustment is only limited by fine adjustment in the vertical direction, so that the whole measuring system is relatively fixed, inflexible and unfriendly to use.
For example, chinese patent CN2015202428150 discloses an acoustic power measuring device for an underwater acoustic focusing transducer, which causes a large deviation to the measurement result.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the technical problems at least to a certain extent, and provides a novel acoustic power meter which is convenient to move; the water in the water tank can be degassed, and the oxygen content in the water can be monitored in real time; and the adjustment of the absorption target position is more accurate.
The technical scheme of the utility model is that: a novel acoustic power meter comprises a frame, wherein an acoustic power meter calibration system and a water circulation and oxygen content monitoring system are arranged in the frame, and wheels and a braking baffle are arranged at the bottom of the frame;
the novel acoustic power meter further comprises an ultrasonic transducer, the acoustic power meter calibration system comprises an absorption target, and the ultrasonic transducer is located below or above the absorption target.
Furthermore, the calibration system of the acoustic power meter comprises a precision balance, a three-axis movement device, a balance beam and a laser;
the three-axis movement device is arranged on a balance beam, the precision balance is arranged on the three-axis movement device, the absorption target is arranged at the lower part of the balance beam, the laser is arranged at the lower part of the three-axis movement device, and a laser beam emitted by the laser corresponds to the center of the absorption target; the absorption target is connected with the precision balance through the hanging mechanism;
the water circulation and oxygen content monitoring system comprises a water circulation system, a water tank and an oxygen content monitoring device, wherein the water circulation system is connected with the water tank through a pipeline, and the oxygen content monitoring device is inserted into the water tank to monitor the oxygen content of the water tank.
Furthermore, the hoisting mechanism comprises an upper precision balance bracket and a fine wire, the upper precision balance bracket is arranged on the precision balance, one end of the fine wire is connected with the upper precision balance bracket, and the other end of the fine wire is connected with the side part of the absorption target; the precision balance upper bracket extend outwards along the upper surface of the precision balance and is provided with four branching parts, each branching part is connected with a thin line, and the number of the thin lines is four.
The number of the balance beams is two, and the laser is arranged at the lower part of the triaxial movement device and is positioned in a space between the two balance beams;
and a beam supporting plate is further arranged between the three-axis movement device and the balance beam, the beam supporting plate is arranged on the balance beam, and the three-axis movement device is arranged on the beam supporting plate.
Furthermore, a supporting plate positioning piece is also arranged at the bottom of the beam supporting plate and positioned in a space between the two balance beams; the three-axis movement device is a manual or electric movement device.
Furthermore, the supporting plate positioning piece is connected with the transducer fixing vertical rod, a connecting part is arranged at the bottom of the transducer fixing vertical rod, and the connecting part is connected to the ultrasonic transducer; the axis of the transducer fixing vertical rod is parallel to a laser beam emitted by the laser; the middle part of the connecting part is of a rotating structure.
Furthermore, the water tank is arranged inside the frame, and the water circulation system is arranged outside the frame;
the pipeline comprises a water inlet pipe and a water outlet pipe, and the water tank is provided with a water inlet and a water outlet;
one end of the water inlet pipe is connected with the water circulation system, and the other end of the water inlet pipe is connected with the water inlet; one end of the water outlet pipe is connected with the water circulation system, and the other end of the water outlet pipe is connected with the water outlet.
Furthermore, the water tank comprises 4 side plates and a bottom plate, the water inlet is formed in one side plate of the water tank, and the water outlet is formed in the other side plate adjacent to the water inlet;
the water outlet is arranged at the lower edge of the side plate, and the water inlet is arranged at the middle upper edge of the side plate; the side plate is also provided with a positioning sheet for fixing the water inlet pipe; the bottom plate is provided with a coupling gel pad.
Furthermore, the oxygen content monitoring device comprises a monitoring head and a controller, wherein the monitoring head is inserted into the water tank and is connected with the controller through a lead; the water tank is made of an acrylic plate.
Furthermore, a graduated scale is arranged in the frame; the frame is also provided with a glass door.
Compared with the prior art, the beneficial effects are: the utility model discloses entire system is more nimble, the frequent removal of being more convenient for, has avoided the removal of water tank simultaneously for whole measurement system is more humanized.
The utility model discloses increased hydrologic cycle and oxygen content monitoring system, more be convenient for to the preparation of deaerated water, carried out corresponding adaptation to the water tank simultaneously and reformed transform, also avoided artifical manual unfavorable factor and the inconvenience brought to water injection in the water tank for entire system is mechanized, intelligent more.
The existing absorption target is modified, so that the method can be better suitable for measuring relative positions of different transducers and the absorption target; the leveling auxiliary device is designed for the existing absorption target, so that the absorption target is more conveniently leveled, and larger deviation caused by the original visual leveling is avoided.
The transducer and the absorption target center alignment auxiliary device are added, so that the transducer and the absorption target center alignment auxiliary device are more convenient to accurately align, and the measurement result is more accurate; a three-axis movement device is designed below the precision balance, so that the absorption target position can be finely adjusted more accurately, and inconvenience caused by manual adjustment is avoided.
The auxiliary device for measuring the distance between the transducer and the absorption target is added, so that the distance between the transducer and the absorption target can be more conveniently and accurately measured, and the measurement result is more accurate.
The ultrasonic transducer can be stably connected to the lower part of the cross beam supporting plate through the matching of the transducer fixing vertical rod and the connecting part, and the connecting mode is simple and quick.
Drawings
FIG. 1 is a schematic view of the overall structure of the embodiment.
FIG. 2 is a first schematic diagram of an acoustic power meter calibration system according to an embodiment.
FIG. 3 is a second schematic diagram of an acoustic power meter calibration system according to an embodiment.
FIG. 4 is a schematic diagram of a water circulation and oxygen content monitoring system according to an embodiment.
FIG. 5 is a schematic view of an absorbent target according to an embodiment.
FIG. 6 is a schematic view of the overall structure of the second embodiment.
FIG. 7 is a first schematic diagram of a calibration system of a second acoustic power meter according to an embodiment.
FIG. 8 is a second schematic diagram of a calibration system for a second acoustic power meter according to an embodiment.
FIG. 9 is a schematic diagram of a water circulation and oxygen content monitoring system according to an embodiment two.
FIG. 10 is a schematic view of an absorbing target according to example two.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Example one
As shown in fig. 1-4, the device comprises a frame 001, wherein an acoustic power meter calibration system and a water circulation and oxygen content monitoring system are arranged in the frame 001, and wheels and a braking baffle plate 11 are arranged at the bottom of the frame 001;
the calibration system of the acoustic power meter comprises a precision balance 1, a three-axis movement device 2, a balance beam 3, a laser 4 and an absorption target 7;
the three-axis movement device 2 is arranged on the balance beam 3, the precision balance 1 is arranged on the three-axis movement device 2, the absorption target 7 is arranged at the lower part of the balance beam 3, the laser 4 is arranged at the lower part of the three-axis movement device 2, and the laser beam emitted by the laser 4 corresponds to the center of the absorption target 7; the absorption target 7 is connected with the precision balance 1 through the hanging mechanism;
the water circulation and oxygen content monitoring system comprises a water circulation system 12, a water tank 6 and an oxygen content monitoring device 5, wherein the water circulation system 12 is connected with the water tank 6 through a pipeline, and the oxygen content monitoring device 5 is inserted into the water tank 6 to monitor the oxygen content;
the ultrasonic transducer 8 is arranged at the bottom of the water tank 6 and is positioned below the absorption target 7. A glass door 9 is also arranged on the frame 001.
In this embodiment, the wheels and the braking baffle 11 are additionally arranged below the whole system, so that the whole system can be conveniently moved and fixed, and meanwhile, in order to reduce the movement of the water tank 6, a lateral bottom beam of the system is removed and is modified into a device of a door capable of being completely opened. As in fig. 1, since the glass door 9 is transparent, all components inside the frame 001 can be clearly seen.
Specifically, as shown in fig. 1-3, in the present embodiment, the ultrasonic transducer 8 is disposed at the bottom of the water tank 6 and below the absorption target 7.
In this embodiment, a laser 4 is designed on the balance beam 3 on which the precision balance 1 is placed, and for the case where the transducer is located below the absorption target 7, the center of the transducer is adjusted to be located on the laser beam emitted by the laser 4, and then the position of the absorption target 7 is adjusted so that the center thereof is also located on the laser beam emitted by the laser 4, thereby ensuring that the transducer is aligned with the center of the absorption target 7.
And the three-axis movement device 2 is designed below the precision balance 1, and the position of the precision balance 1 can be manually adjusted through a knob, so that the position of the suspended absorption target 7 can be flexibly adjusted.
Further, the hanging mechanism comprises a precision balance upper support 100 and a fine wire 200, wherein the precision balance upper support 100 is arranged on the precision balance 1, one end of the fine wire 200 is connected with the precision balance upper support 100, and the other end of the fine wire 200 is connected with the side part of the absorption target 7. The precision balance upper frame 100 is provided with four bifurcated portions extending outward along the upper surface of the precision balance 1, each bifurcated portion is connected with one thin wire 200, and the number of the thin wires 200 is four.
In this embodiment, the measurement result is more accurate through the cooperation of the above structures.
Furthermore, the number of the balance beams 3 is two, and the laser 4 is arranged at the lower part of the triaxial movement device 2 and is positioned in the space between the two balance beams 3. In this embodiment, the number of balance beams 3 is two, which can better support the three-axis movement device 2, and also provides a space for installing the laser 4.
Further, a beam support plate 300 is further arranged between the three-axis movement device 2 and the balance beam 3, the beam support plate 300 is arranged on the balance beam 3, and the three-axis movement device 2 is arranged on the beam support plate 300. The bottom of the beam support plate 300 is also provided with a support plate positioning element 400, the support plate positioning element 400 being located in the space between the two balance beams 3. In this embodiment, the three-axis exercise device 2 can be better supported by the beam support plate 300.
Furthermore, the three-axis movement device 2 is a manual or electric movement device, the manual mode is simple, fast and convenient to operate, and the electric mode can reduce labor force and is accurate in adjustment. The three-axis movement device 2 can be manual or electric.
As shown in fig. 1 and 4, in this embodiment, a water circulation system 12 and an oxygen content monitoring device 5 are added to the whole system, the water in the water tank 6 is degassed by the water circulation system 12 before measurement, the oxygen content monitoring device 5 is placed in the water tank 6 to monitor the oxygen content in the water in real time, and corresponding data is transmitted to corresponding software in a wireless transmission mode.
Specifically, the pipeline comprises a water inlet pipe 1a and a water outlet pipe 2a, and a water inlet 3a and a water outlet 4a are arranged on the water tank 6;
one end of the water inlet pipe 1a is connected with the water circulation system 12, and the other end is connected with the water inlet 3 a; one end of the water outlet pipe 2a is connected with the water circulation system 12, and the other end is connected with the water outlet 4 a.
In this embodiment, the water circulation system 12 can degas the water in the water tank 6 through the above-mentioned pipe connection.
Specifically, the water tank 6 includes 4 side plates 61 and a bottom plate 62, the water inlet 3a is disposed on one side plate 61 of the water tank 6, and the water outlet 4a is disposed on the other side plate 61 adjacent to the water inlet 3 a. The water outlet 4a is arranged at the lower edge of the side plate 61, and the water inlet 3a is arranged at the middle upper edge of the side plate 61.
In this embodiment, the water outlet 4a and the water inlet 3a are arranged reasonably, water is fed from the middle upper part of the water tank 6, water is discharged from the lower part of the water tank 6, and the water in the water tank 6 can be better degassed through the water circulation system 12.
Furthermore, the side plate 61 is also provided with a positioning plate 6a for fixing the water inlet pipe 1 a. The positioning piece 6a is arranged, so that the position of the water inlet pipe 1a is stable.
Further, a coupling gel pad 5a is provided on the base plate 62, and the shape of the coupling gel pad 5a is circular. The coupling gel pad 5a mainly plays a role in acoustic coupling, is directly contacted with a coupling film on the ultrasonic transducer 8 when in use, can be filled with water in the middle, and further empties air, so that the ultrasonic emitted by the ultrasonic transducer below the water tank 6 can well enter the water tank 6 and is transmitted to an absorption target.
Further, the oxygen content monitoring device 5 comprises a monitoring head 51 and a controller 52, wherein the monitoring head 51 is inserted into the water tank 6, and the monitoring head 51 is connected with the controller 52 through a lead. The oxygen content monitoring device 5 monitors the water in the water tank 6 in real time, and the controller 52 simultaneously transmits corresponding data to corresponding software in a wireless transmission manner.
Further, the water tank 6 is made of acrylic plates, and supporting legs are arranged at the bottom of the water tank 6. The water tank 6 may be a transparent water tank of acryl material in a cylindrical or square shape. The support feet serve to support the water tank 6.
Specifically, as shown in fig. 1, a scale 10 is further provided in the frame 001. By designing a scale 10 on one side of the radiation force balance system, the distance between the absorption target 7 and the ultrasonic transducer 8 can be determined more accurately by positioning them so that the distance between them is as much as 0.7f (f is the focal length of the transducer).
As shown in fig. 5, a circular level 2C is provided in the middle of the absorption target 7. In the case where the ultrasonic transducer 8 is located below the absorption target 7, a circular level 2C or a digital level or a tilt sensor or the like is designed on the back surface of the absorption target 7 to assist the leveling of the absorption target 7. Corresponding measurement data can be transmitted to the software end in a wireless transmission mode, so that the horizontal condition of the absorption target 7 can be adjusted conveniently. The circular level 2C can indicate and assist the leveling of the absorption target 7, so that the absorption target level is ensured more conveniently, and the measurement result is more accurate.
As shown in fig. 1-5, when using the system to measure acoustic power, firstly, the water tank 6 is placed above the ultrasonic transducer 8, then the glass door 9 is opened, the system is fixed right above the water tank 6 by using the wheels of the radiation balance system and the braking baffle 11, the absorption target 7 is soaked in the water tank 6 for 30min, meanwhile, the water in the water tank 6 is continuously circulated and degassed by using the water circulation system 12, the oxygen content monitoring device 5 is used for real-time monitoring, the ultrasonic transducer 8 is preheated for 10min, then the precision balance 1 is leveled, peeled and zeroed, the absorption target 7 is respectively suspended below the precision balance 1 by using the fine wire 200, the position of the absorption target 7 is adjusted by using the triaxial movement device 2 to make the center of the absorption target 7 be positioned on the laser beam generated by the laser 4, thereby ensuring the centers of the absorption target 7 and the ultrasonic transducer 8 to be in an aligned state, and then, the distance between the absorption target 7 and the ultrasonic transducer 8 is adjusted by using the graduated scale 10, so that the distance between the absorption target and the ultrasonic transducer is about 0.7f (f is the focal length of the ultrasonic transducer), finally, the water circulation system 12 and the laser 4 are closed, and relevant software of the radiation force balance system is opened to measure the acoustic power.
Example two
As shown in fig. 6-9, comprises a frame 001, wherein the frame 001 is internally provided with an acoustic power meter calibration system and a water circulation and oxygen content monitoring system, and the bottom of the frame 001 is provided with wheels and a braking baffle plate 11;
the calibration system of the acoustic power meter comprises a precision balance 1, a three-axis movement device 2, a balance beam 3, a laser 4 and an absorption target 7;
the three-axis movement device 2 is arranged on the balance beam 3, the precision balance 1 is arranged on the three-axis movement device 2, the absorption target 7 is arranged at the lower part of the balance beam 3, the laser 4 is arranged at the lower part of the three-axis movement device 2, and the laser beam emitted by the laser 4 corresponds to the center of the absorption target 7; the absorption target 7 is connected with the precision balance 1 through the hanging mechanism;
the water circulation and oxygen content monitoring system comprises a water circulation system 12, a water tank 6 and an oxygen content monitoring device 5, wherein the water circulation system 12 is connected with the water tank 6 through a pipeline, and the oxygen content monitoring device 5 is inserted into the water tank 6 to monitor the oxygen content;
the ultrasonic transducer 8 is connected to the lower part of the balance beam 3 and the ultrasonic transducer 8 is located above the absorption target 7. A glass door 9 is also arranged on the frame 001.
In this embodiment, the wheels and the braking baffle 11 are additionally arranged below the whole system, so that the whole system can be conveniently moved and fixed, and meanwhile, in order to reduce the movement of the water tank 6, a lateral bottom beam of the system is removed and is modified into a device of a door capable of being completely opened. As shown in fig. 6, since the glass door 9 is transparent, all components inside the frame 001 can be clearly seen.
Specifically, as shown in fig. 6 to 8, in the present embodiment, the ultrasonic transducer 8 is attached to the lower portion of the balance beam 3 and the ultrasonic transducer 8 is located above the absorption target 7.
In this embodiment, for the case where the ultrasonic transducer 8 is located above the absorption target 7, the position of the absorption target 7 is adjusted so that the center of the absorption target 7 is located on the laser beam generated by the laser, and then the position of the ultrasonic transducer 8 is adjusted so that the center of the ultrasonic transducer 8 is also located on the laser beam generated by the laser, thereby ensuring that the ultrasonic transducer 8 is aligned with the center of the absorption target 7.
And the three-axis movement device 2 is designed below the precision balance 1, and the position of the precision balance 1 can be manually adjusted through a knob, so that the position of the suspended absorption target 7 can be flexibly adjusted.
Further, the hanging mechanism comprises a precision balance upper support 100 and a fine wire 200, wherein the precision balance upper support 100 is arranged on the precision balance 1, one end of the fine wire 200 is connected with the precision balance upper support 100, and the other end of the fine wire 200 is connected with the side part of the absorption target 7. The precision balance upper frame 100 is provided with four bifurcated portions extending outward along the upper surface of the precision balance 1, each bifurcated portion is connected with one thin wire 200, and the number of the thin wires 200 is four.
In this embodiment, the measurement result is more accurate through the cooperation of the above structures.
Furthermore, the number of the balance beams 3 is two, and the laser 4 is arranged at the lower part of the triaxial movement device 2 and is positioned in the space between the two balance beams 3. In this embodiment, the number of balance beams 3 is two, which can better support the three-axis movement device 2, and also provides a space for installing the laser 4.
Further, a beam support plate 300 is further arranged between the three-axis movement device 2 and the balance beam 3, the beam support plate 300 is arranged on the balance beam 3, and the three-axis movement device 2 is arranged on the beam support plate 300. The bottom of the beam support plate 300 is also provided with a support plate positioning element 400, the support plate positioning element 400 being located in the space between the two balance beams 3. In this embodiment, the three-axis exercise device 2 can be better supported by the beam support plate 300.
Furthermore, the three-axis movement device 2 is a manual or electric movement device, the manual mode is simple, fast and convenient to operate, and the electric mode can reduce labor force and is accurate in adjustment. The three-axis movement device 2 can be manual or electric.
The supporting plate positioning member 400 is connected to the transducer fixing vertical rod 13, the bottom of the transducer fixing vertical rod 13 is provided with a connecting portion 130, and the connecting portion 130 is connected to the ultrasonic transducer 8.
The axis of the transducer fixing vertical rod 13 is parallel to the laser beam emitted by the laser, and the middle part of the connecting part 130 is of a rotating structure.
The ultrasonic transducer 8 can be stably connected to the lower part of the beam support plate 300 by matching the transducer fixing vertical rod 13 and the connecting part 130, and the connection mode is simple and quick. In this embodiment, a flexible movable or telescopic transducer fixing vertical rod 13 is designed to fix the ultrasonic transducer 8, so that the radiation balance system can be directly moved to the position above the water tank 6, and the danger of frequently moving the water tank is avoided.
As shown in fig. 6 and 9, in this embodiment, a water circulation system 12 and an oxygen content monitoring device 5 are added to the whole system, the water in the water tank 6 is degassed by the water circulation system 12 before measurement, the oxygen content monitoring device 5 is placed in the water tank 6 to monitor the oxygen content in the water in real time, and corresponding data is transmitted to corresponding software in a wireless transmission mode.
Specifically, the pipeline comprises a water inlet pipe 1a and a water outlet pipe 2a, and a water inlet 3a and a water outlet 4a are arranged on the water tank 6;
one end of the water inlet pipe 1a is connected with the water circulation system 12, and the other end is connected with the water inlet 3 a; one end of the water outlet pipe 2a is connected with the water circulation system 12, and the other end is connected with the water outlet 4 a.
In this embodiment, the water circulation system 12 can degas the water in the water tank 6 through the above-mentioned pipe connection.
Specifically, the water tank 6 includes 4 side plates 61 and a bottom plate 62, the water inlet 3a is disposed on one side plate 61 of the water tank 6, and the water outlet 4a is disposed on the other side plate 61 adjacent to the water inlet 3 a. The water outlet 4a is arranged at the lower edge of the side plate 61, and the water inlet 3a is arranged at the middle upper edge of the side plate 61.
In this embodiment, the water outlet 4a and the water inlet 3a are arranged reasonably, water is fed from the middle upper part of the water tank 6, water is discharged from the lower part of the water tank 6, and the water in the water tank 6 can be better degassed through the water circulation system 12.
Furthermore, the side plate 61 is also provided with a positioning plate 6a for fixing the water inlet pipe 1 a. The positioning piece 6a is arranged, so that the position of the water inlet pipe 1a is stable.
Further, the oxygen content monitoring device 5 comprises a monitoring head 51 and a controller 52, wherein the monitoring head 51 is inserted into the water tank 6, and the monitoring head 51 is connected with the controller 52 through a lead. The oxygen content monitoring device 5 monitors the water in the water tank 6 in real time, and the controller 52 simultaneously transmits corresponding data to corresponding software in a wireless transmission manner.
Further, the water tank 6 is made of acrylic plates, and supporting legs are arranged at the bottom of the water tank 6. The water tank 6 may be a transparent water tank of acryl material in a cylindrical or square shape. The support feet serve to support the water tank 6.
Specifically, as shown in fig. 6, a scale 10 is further provided in the frame 001. By designing a scale 10 on one side of the radiation force balance system, the distance between the absorption target 7 and the ultrasonic transducer 8 can be determined more accurately by positioning them so that the distance between them is as much as 0.7f (f is the focal length of the transducer).
As shown in fig. 8 and 10, the absorption target 7 is provided with a weight 3B at the bottom thereof, and a pipe-shaped level 2B is provided at the side of the absorption target 7. In this embodiment, in order to be suitable for the measurement situation where the ultrasonic transducer 8 is located above the absorption target 7, the annular counterweight 3B is embedded on the back surface of the absorption target 7 to avoid the drift and instability after the absorption target 7 is placed upside down; in the case that the ultrasonic transducer 8 is located above the absorption target 7, a digital level or an inclination sensor is designed on the back surface of the absorption target 7 or a tubular level 2B is symmetrically embedded on the side surface of the absorption target 7, and corresponding measurement data is transmitted to a software end in a wireless transmission mode, so that the horizontal condition of the absorption target can be adjusted conveniently. The tubular level 2B can indicate and assist the leveling of the absorption target, so that the absorption target is more conveniently guaranteed to be horizontal, and the measurement result is more accurate.
As shown in fig. 6-10, when using the system to measure the acoustic power, firstly adjusting the vertical rod 13 of the transducer to the top, then opening the glass door 9, fixing the system right above the water tank 6 by using the wheels of the radiation balance system and the braking baffle 11, suspending the absorption target 7 under the balance by using the thin wire 200, respectively, adjusting the position of the absorption target by using the three-axis movement device 2 to make the center of the absorption target be on the laser beam generated by the laser 4, thereby ensuring the centers of the absorption target 7 and the transducer to be in an aligned state, then adjusting the distance between the absorption target 7 and the ultrasonic transducer 8 by using the graduated scale 10 to make the distance between the two be about 0.7f (f is the focal length of the ultrasonic transducer), soaking the absorption target 7 in the water tank 6 for 30min, and continuously removing the water in the water tank 6 by using the water circulation system 12, and the oxygen content monitoring device 5 is used for monitoring in real time, the ultrasonic transducer 8 is preheated for 10min, finally the water circulation system 12 and the laser 4 are closed, and the relevant software of the radiation force balance system is opened for measuring the sound power.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A novel acoustic power meter comprises a frame (001), and is characterized in that an acoustic power meter calibration system and a water circulation and oxygen content monitoring system are arranged in the frame (001), and wheels and a braking baffle plate (11) are arranged at the bottom of the frame (001);
the novel acoustic power meter also comprises an ultrasonic transducer, and the acoustic power meter calibration system comprises an absorption target (7), and the ultrasonic transducer is positioned below or above the absorption target (7).
2. The novel acoustic power meter according to claim 1, characterized in that: the calibration system of the acoustic power meter comprises a precision balance (1), a three-axis movement device (2), a balance beam (3) and a laser (4);
the three-axis movement device (2) is arranged on the balance beam (3), the precision balance (1) is arranged on the three-axis movement device (2), the absorption target (7) is arranged at the lower part of the balance beam (3), the laser (4) is arranged at the lower part of the three-axis movement device (2), and a laser beam emitted by the laser (4) corresponds to the center of the absorption target (7); the absorption target (7) is connected with the precision balance (1) through the hanging mechanism at the side part;
water circulation and oxygen content monitoring system includes water circulation system (12), water tank (6), oxygen content monitoring devices (5), water circulation system (12) pass through the pipe connection with water tank (6), oxygen content monitoring devices (5) insert in water tank (6) to its oxygen content monitoring.
3. The novel acoustic power meter according to claim 2, characterized in that: the hoisting mechanism comprises a precision balance upper support (100) and a fine wire (200), the precision balance upper support (100) is arranged on the precision balance (1), one end of the fine wire (200) is connected with the precision balance upper support (100), and the other end of the fine wire is connected with the side part of the absorption target (7); the precision balance upper bracket (100) extends outwards along the upper surface of the precision balance (1) and is provided with four branch parts, each branch part is connected with one thin line (200), and the number of the thin lines (200) is four.
4. A novel acoustic power meter according to claim 3, wherein: the number of the balance beams (3) is two, and the lasers (4) are arranged at the lower part of the triaxial movement device (2) and are positioned in a space between the two balance beams (3);
the balance is characterized in that a beam support plate (300) is further arranged between the triaxial moving device (2) and the balance beam (3), the beam support plate (300) is arranged on the balance beam (3), and the triaxial moving device (2) is arranged on the beam support plate (300).
5. The novel acoustic power meter according to claim 4, characterized in that: the bottom of the beam supporting plate (300) is also provided with a supporting plate positioning piece (400), and the supporting plate positioning piece (400) is positioned in a space between the two balance beams (3); the three-axis movement device (2) is a manual or electric movement device.
6. The novel acoustic power meter according to claim 5, characterized in that: the supporting plate positioning piece (400) is connected with the transducer fixing vertical rod (13), the bottom of the transducer fixing vertical rod (13) is provided with a connecting part (130), and the connecting part (130) is connected to the ultrasonic transducer (8); the axis of the transducer fixing vertical rod (13) is parallel to the laser beam emitted by the laser (4); the middle part of the connecting part (130) is of a rotating structure.
7. The novel acoustic power meter according to claim 2, characterized in that: the water tank (6) is arranged inside the frame (001), and the water circulation system (12) is arranged outside the frame (001);
the pipeline comprises a water inlet pipe (1a) and a water outlet pipe (2a), and the water tank (6) is provided with a water inlet (3a) and a water outlet (4 a);
one end of the water inlet pipe (1a) is connected with the water circulation system (12), and the other end is connected with the water inlet (3 a); one end of the water outlet pipe (2a) is connected with the water circulation system (12), and the other end is connected with the water outlet (4 a).
8. The novel acoustic power meter according to claim 7, wherein: the water tank (6) comprises 4 side plates (61) and a bottom plate (62), the water inlet (3a) is formed in one side plate (61) of the water tank (6), and the water outlet (4a) is formed in the other side plate (61) adjacent to the water inlet (3 a);
the water outlet (4a) is arranged at the lower edge of the side plate (61), and the water inlet (3a) is arranged at the middle upper edge of the side plate (61); the side plate (61) is also provided with a positioning sheet (6a) for fixing the water inlet pipe (1 a); the bottom plate (62) is provided with a coupling gel pad (5 a).
9. The novel acoustic power meter according to claim 8, characterized in that: the oxygen content monitoring device (5) comprises a monitoring head (51) and a controller (52), wherein the monitoring head (51) is inserted into the water tank (6), and the monitoring head (51) is connected with the controller (52) through a lead; the water tank (6) is made of an acrylic plate.
10. The novel acoustic power meter according to any one of claims 1 to 9, characterized in that: a graduated scale (10) is also arranged in the frame (001); the frame (001) is also provided with a glass door (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021476585.1U CN212693059U (en) | 2020-07-23 | 2020-07-23 | Novel acoustic power meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021476585.1U CN212693059U (en) | 2020-07-23 | 2020-07-23 | Novel acoustic power meter |
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| Publication Number | Publication Date |
|---|---|
| CN212693059U true CN212693059U (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021476585.1U Active CN212693059U (en) | 2020-07-23 | 2020-07-23 | Novel acoustic power meter |
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| CN (1) | CN212693059U (en) |
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