Sound wave detection device and ultra-deep far sound wave detection equipment

Abstract

The invention discloses a sound wave detection device and ultra-deep far sound wave detection equipment, and belongs to the technical field of sound wave detection. A sound wave signal is sent through a transmitting unit, a driving signal is provided for a permanent magnet of a sounding body through a driving circuit in the transmitting unit, and the permanent magnet has corresponding coupling torque by controlling output current; the vibration reed is driven to vibrate up and down to emit the sound wave signal, and the conversion efficiency is high in the process of converting the driving signal into the sound wave signal, so that the emitted sound wave signal can have high strength, and the accuracy of the emitted sound wave signal is improved; the sound wave detection device can be applied to deeper and farther detection fields; meanwhile, the driving signal provided to the permanent magnet usually does not need a high voltage, thereby facilitating the reduction of the cost of the emission unit, simplifying the structure of the emission unit, and further facilitating the reduction of the overall cost of the sound wave detection device and simplifying the structure of the sound wave detection device.

Description

Technical Field

[0001] The invention belongs to the technical field of sound wave detection, and in particular relates to a sound wave detection device and ultra-deep sound wave detection equipment. Background Art

[0002] Geological exploration is the work of investigating and studying the geological conditions such as rocks, strata, structures, minerals, hydrology, and landforms in a certain area in order to find out the quality and quantity of minerals and the technical conditions for mining and utilization, and to provide the mineral reserves and geological data required for mine construction design. The main methods include pit, trench exploration, drilling, geophysical exploration, etc. Commonly used geophysical exploration methods include direct current exploration, alternating current exploration, gravity exploration, magnetic exploration, seismic exploration, acoustic exploration, and radioactive exploration.

[0003] Acoustic wave detection is a technical means to determine the characteristics of a medium by measuring the speed, amplitude, and spectrum of the sound waves propagating in the medium. Due to its non-contact detection characteristics, acoustic wave detection is widely used in remote detection fields such as geological exploration. However, in special environments, such as high temperatures, the acoustic wave detection sensor will attenuate the emitted sound waves due to its internal components, affecting the accuracy and application scenarios of acoustic wave detection. Summary of the invention

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide an acoustic wave detection device and an ultra-deep acoustic wave detection device to solve the technical problem in the prior art that the emitted sound waves attenuate under special working conditions, affecting the accuracy of acoustic wave detection and the application scenarios.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An acoustic wave detection device comprises: a transmitting unit, a receiving unit and a main control unit; the transmitting unit and the receiving unit are both connected to the main control unit;

[0007] The transmitting unit includes a driving circuit and a plurality of sound-emitting bodies, wherein the sound-emitting bodies include a magnetically conductive skeleton, a vibrating reed and a plurality of permanent magnets; the vibrating reed and the plurality of permanent magnets are fixed on the magnetically conductive skeleton, the driving circuit is electrically connected to each permanent magnet to provide a driving signal, and the permanent magnet drives the vibrating reed to vibrate and emits a sound wave signal to the receiving unit.

[0008] Preferably, the magnetic conductive skeleton includes a magnetic conductive bottom plate and magnetic conductive side plates located on opposite sides of the magnetic conductive bottom plate; an electromagnetic coil is wound around the permanent magnet, and each permanent magnet is fixed to the magnetic conductive bottom plate; the vibration reed is located on the side of the permanent magnet facing away from the magnetic conductive bottom plate, and the vibration reed is fixed to the magnetic conductive side plate; the drive circuit is electrically connected to the electromagnetic coil of each permanent magnet.

[0009] Preferably, the receiving unit includes at least one receiving crystal and a signal conversion circuit; the receiving crystal is used to receive the acoustic wave feedback signal fed back by the medium to be measured; and the signal conversion circuit is used to convert the acoustic wave feedback signal into an acoustic wave detection signal.

[0010] Preferably, it also includes: a sound system body, which includes a plurality of grooves arranged in one-to-one correspondence with the plurality of sound-emitting bodies; the sound-emitting bodies are located in the grooves; the grooves are arranged along the circumference of the sound system body, and the spacing between two adjacent grooves is equal, that is, the grooves are evenly distributed on the circumference of the sound system body.

[0011] Preferably, the groove includes a stacked first groove portion and a second groove portion; the magnetic conductive skeleton is located in the first groove portion, and the vibration reed is located in the second groove portion; the size of the first groove portion in the second direction X′ is smaller than the size of the second groove portion in the second direction X′; the second direction X′ is parallel to the plane where the magnetic conductive base plate is located.

[0012] Preferably, the groove also includes a third groove portion located on the side of the second groove portion away from the first groove portion; the size of the third groove portion in the second direction X′ is larger than the size of the second groove portion in the second direction X′, and the groove formed by the first groove portion, the second groove portion and the third groove portion is in a two-step shape.

[0013] Preferably, it also includes a plurality of protection plates arranged corresponding to the plurality of grooves; the protection plates and the grooves form a closed space for accommodating the sound-emitting body.

[0014] Preferably, the sound system body also includes a wiring setting hole; the grooves surround the wiring setting hole so that the wiring setting hole is located in the central area of ​​the sound system body; each electromagnetic coil is electrically connected to the driving circuit through a signal transmission line; the signal transmission line passes through the wiring setting hole, and the signal transmission line can be accommodated in the wiring setting hole.

[0015] Preferably, it also includes a storage circuit, which is electrically connected to the main control unit and the signal conversion circuit respectively; the main control unit is also used to control the storage circuit to store the acoustic wave detection signal converted by the signal conversion circuit.

[0016] An ultra-deep sound wave detection device comprises a sound wave detection device as described in any one of the above, and also comprises a transmitting short section, a receiving short section and an acoustic system short section; the receiving unit comprises at least one receiving crystal and a signal conversion circuit; the driving circuit is arranged in the transmitting short section, the receiving unit is arranged in the receiving short section, and the sounding body and the receiving crystal are both arranged in the acoustic system short section.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] By arranging a transmitting unit, a receiving unit and a main control unit in the acoustic wave detection device, the acoustic wave signal is emitted by the transmitting unit, a driving signal is provided to the permanent magnet of the sound emitter through the driving circuit in the transmitting unit, and by controlling the output current, the permanent magnet is made to have a corresponding coupling torque, so as to drive the vibrating reed to vibrate up and down to emit an acoustic wave signal. During the conversion of the driving signal into an acoustic wave signal, a high conversion efficiency is achieved, so that the emitted acoustic wave signal can have a high intensity, improving the accuracy of the emitted acoustic wave signal, and enabling the acoustic wave detection device to be applied to deeper and farther detection fields; at the same time, the driving signal provided to the permanent magnet usually does not require a high voltage, and it is sufficient to control the permanent magnet to have a corresponding coupling torque, so that the transmitting unit does not require high-voltage driving, which is beneficial to reducing the cost of the transmitting unit, simplifying the structure of the transmitting unit, and further beneficial to reducing the overall cost of the acoustic wave detection device and simplifying the structure of the acoustic wave detection device; in addition, since the main sound-emitting structure of the sound emitter is composed of a permanent magnet and a vibrating reed, both the permanent magnet and the vibrating reed have the characteristic of high temperature resistance, enabling the acoustic wave signal to be stably emitted in a high-temperature environment, thus ensuring that the acoustic wave detection device can work stably in a high-temperature environment, making the acoustic wave detection device have high temperature resistance characteristics and operating reliability, and further enabling the acoustic wave detection device to have a wider application scenario.

[0019] Further, the driving circuit in the transmitting unit provides a driving signal to the electromagnetic coil of the sound emitter, controls the current flowing through the electromagnetic coil, so that the permanent magnet wound by the electromagnetic coil has a corresponding coupling torque, to drive the vibrating reed to vibrate up and down to emit an acoustic wave signal. The driving signal provided to the electromagnetic coil usually does not require a high voltage, and it is sufficient to make the current in the electromagnetic coil control the permanent magnet to have a corresponding coupling torque, so that the transmitting unit does not require high-voltage driving, which is beneficial to reducing the cost of the transmitting unit, simplifying the structure of the transmitting unit, and further beneficial to reducing the overall cost of the acoustic wave detection device and simplifying the structure of the acoustic wave detection device. Description of the Drawings

[0020] Figure 1 is a structural block diagram of an acoustic wave detection device provided by an embodiment of the present invention;

[0021] Figure 2 is a partial structural schematic diagram of an acoustic wave detection device provided by an embodiment of the present invention;

[0022] Figure 3 is a structural schematic diagram of a driving signal provided by an embodiment of the present invention;

[0023] Figure 4 is a structural schematic diagram of a transmitting unit provided by an embodiment of the present invention;

[0024] Figure 5It is a top - view structural schematic diagram of a sounding body provided by an embodiment of the present invention;

[0025] Figure 6 It is a cross - sectional structural schematic diagram of a sound wave detection device provided by an embodiment of the present invention;

[0026] Figure 7 It is a structural block diagram of another sound wave detection device provided by an embodiment of the present invention;

[0027] Figure 8 It is a structural schematic diagram of an ultra - deep and far - reaching sound wave detection device provided by an embodiment of the present invention.

[0028] Wherein: 10 - main control unit; 20 - transmitting unit; 210 - driving circuit; 220 - sounding body; 221 - magnetic conduction skeleton; 2211 - magnetic conduction bottom plate; 2212 - magnetic conduction side plate; 222 - vibrating reed; 223 - permanent magnet; 2231 - electromagnetic coil; 2232 - signal transmission line; 30 - receiving unit; 310 - receiving crystal; 320 - signal conversion circuit; 40 - acoustic system main body; 401 - groove; 4011 - first groove part; 4012 - second groove part; 4013 - third groove part; 50 - protection plate; 60 - storage circuit; 100 - transmitting sub - section; 200 - receiving sub - section; 300 - acoustic system sub - section. Detailed implementation manners

[0029] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above - mentioned drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order different from those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non - exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily need to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0031] The present invention will be further described in detail below with reference to the drawings:

[0032] An embodiment of the present invention provides an acoustic wave detection device, which is applied to remote detection fields such as geological exploration, and in particular can be arranged in a logging tool so that the logging tool can be applied to ultra-deep well operations. Figure 1 It is a structural block diagram of an acoustic wave detection device provided by an embodiment of the present invention. Figure 2 It is a partial structural schematic diagram of an acoustic wave detection device provided by an embodiment of the present invention. With reference to Figure 1 and Figure 2 , an acoustic wave detection device includes: a transmitting unit 20, a receiving unit 30, and a main control unit 10; both the transmitting unit 20 and the receiving unit 30 are connected to the main control unit 10.

[0033] The transmitting unit 20 includes a driving circuit 210 and a plurality of sound emitters 220. The sound emitter 220 includes a magnetic conductive framework 221, a vibrating reed 222, and a plurality of permanent magnets 223; the vibrating reed 222 and the plurality of permanent magnets 223 are fixed on the magnetic conductive framework 221. The driving circuit 210 is electrically connected to each permanent magnet 223 for providing a driving signal, and the permanent magnet 223 drives the vibrating reed 222 to vibrate, emitting an acoustic wave signal to the receiving unit 30.

[0034] An acoustic wave signal is emitted through the transmitting unit 20. A driving signal is provided to the permanent magnet 223 of the sound emitter 220 through the driving circuit 210 in the transmitting unit 20. By controlling the output current, the permanent magnet 223 is made to have a corresponding coupling torque, so as to drive the vibrating reed 222 to vibrate up and down to emit an acoustic wave signal. During the conversion process of the driving signal to the acoustic wave signal, a high conversion efficiency is achieved, so that the emitted acoustic wave signal can have a high intensity, improving the accuracy of the emitted acoustic wave signal, enabling the acoustic wave detection device to be applied to deeper and farther detection fields; at the same time, the driving signal provided to the permanent magnet 223 usually does not require a high voltage, and it is only necessary to control the permanent magnet 223 to have a corresponding coupling torque, so that the transmitting unit 20 does not require high-voltage driving, which is beneficial to reducing the cost of the transmitting unit, simplifying the structure of the transmitting unit 20, and further beneficial to reducing the overall cost of the acoustic wave detection device and simplifying the structure of the acoustic wave detection device; in addition, since the main sound-emitting structure of the sound emitter 220 is composed of the permanent magnet 223 and the vibrating reed 222, both the permanent magnet 223 and the vibrating reed 222 have the characteristics of high temperature resistance, enabling stable emission of acoustic wave signals in a high-temperature environment, thus ensuring that the acoustic wave detection device can work stably in a high-temperature environment, making the acoustic wave detection device have high temperature resistance characteristics and operation reliability, and further enabling the acoustic wave detection device to have a wider application scenario.

[0035] In some embodiments, the acoustic wave detection device includes a main control unit 10, a transmitting unit 20 and a receiving unit 30; the transmitting unit 20 includes a driving circuit 210 and a plurality of sound-emitting bodies 220; the sound-emitting bodies 220 include a magnetic skeleton 221, a vibrating reed 222 and a plurality of permanent magnets 223; the magnetic skeleton 221 includes a magnetic bottom plate 2211 and magnetic side plates 2212 located on opposite sides of the magnetic bottom plate 2211; an electromagnetic coil 2231 is wound around the permanent magnet 223, and each permanent magnet 223 is fixed on the magnetic bottom plate 2211; the vibrating reed 222 is located on the side of the permanent magnet 223 away from the magnetic bottom plate 2211, and the vibrating reed 222 is fixed on the magnetic side plate 2212; the driving circuit 210 and each permanent magnet 223 are connected to the magnetic bottom plate 2211. The electromagnetic coil 2231 is electrically connected; the driving circuit 210 is used to provide a driving signal to the electromagnetic coil 2231, so that the permanent magnet 223 drives the vibration reed 222 to vibrate and send a sound wave signal to the medium to be tested; the receiving unit 30 includes at least one receiving crystal 310 and a signal conversion circuit 320; the receiving crystal 310 is used to receive the sound wave feedback signal fed back by the medium to be tested; the signal conversion circuit is used to convert the sound wave feedback signal into a sound wave detection signal; the main control unit 10 is respectively connected to the driving circuit 210 and the signal conversion circuit 30; the main control unit 10 is used to control the driving signal provided by the driving circuit 210 to the electromagnetic coil 2231, and to obtain the sound wave detection signal, and determine the parameter information of the medium to be tested according to the sound wave detection signal.

[0036] Among them, the medium to be tested includes but is not limited to rock mass, etc.; the permanent magnet 223 can be any magnet that can maintain magnetism for a long time and whose polarity remains unchanged, which can include but is not limited to natural magnets or artificial magnets, etc. The material of the vibration reed 222 can be a metal or alloy with high temperature resistance, etc., and the materials of the permanent magnet 223 and the vibration reed 222 can be selected according to actual needs. The embodiment of the present invention does not specifically limit this. The permanent magnet 223 is fixed on the magnetic bottom plate 2211 of the magnetic skeleton 221, and its specific fixing method can include but is not limited to welding, pasting, etc., or the permanent magnet 223 can also be an integral structure with the magnetic bottom plate 2211. The embodiment of the present invention does not limit the fixing method of the permanent magnet 223 and the magnetic bottom plate 2211; the vibration reed 222 can be fixed to the magnetic side plate 2212 of the magnetic skeleton 221 by fasteners (such as threaded fasteners), that is, one end of the vibration reed 222 is fixed by at least one A fastener is fixed to one of the magnetic side plates 2212, and the other end of the vibration reed 222 can also be fixed to the other magnetic side plate 2212 by at least one fastener, so that the vibration reed 222 can be stably fixed to the magnetic skeleton 221; when the permanent magnet 223 is fixed to the magnetic bottom plate 2211 and the vibration reed 222 is fixed to the magnetic side plate 2212, there will be a gap between the permanent magnet 223 and the vibration reed 222, so that the vibration reed 222 can vibrate up and down in the gap.

[0037] The main control unit 10 may include a circuit board, a control chip, etc.; the connection mode between the main control unit 10 and the drive circuit 210 and the receiving unit 30 may be a wireless communication connection, or the main control unit 10 may also be electrically connected to the drive circuit 210 and the receiving unit 30 through connection lines respectively. On the premise that the main control unit 10 can control the drive signal provided by the drive circuit 210 and obtain the acoustic wave detection signal received by the receiving unit 30, the embodiment of the present invention does not limit the connection mode between the main control unit 10 and the drive circuit 210 and the receiving unit 30.

[0038] In a specific embodiment, the main control unit 10 may provide a drive control signal to the drive circuit 210 according to actual needs, so that the drive circuit 210 can provide a drive signal to the electromagnetic coils 2231 of the permanent magnets 223 under the control of the drive control signal. The drive signal may be, for example, Figure 3 the square wave signal shown, so that the drive signal may include a high level and a low level. For example, when the drive signal is at a high level, a positive current flows through the electromagnetic coil 2231 wound around the permanent magnet 223, and the current couples a positive torque with the permanent magnet 223, so that the permanent magnet 223 attracts and combines with the vibrating reed 222. When the drive signal is at a low level, no current flows through the electromagnetic coil 2231, so that the permanent magnet 223 has no coupling torque, and the permanent magnet 223 separates from the vibrating reed 222, so that the vibrating reed 222 can vibrate up and down with the attraction and separation from the permanent magnet 223, thereby emitting an acoustic wave signal. The acoustic wave signal emitted by the sound emitter 220 can propagate in the medium to be measured, and it has different propagation speeds and attenuation conditions, etc. in different media to be measured. At this time, the acoustic wave feedback signal fed back by the medium to be measured is received by the receiving crystal 310, and the signal conversion circuit 320 converts the acoustic wave feedback signal into an acoustic wave detection signal that the main control unit 10 can recognize, so that the main control unit 10 can process and analyze the acoustic wave detection signal, and then determine the propagation speed and attenuation conditions, etc. of the acoustic wave signal in the medium to be measured, so as to determine the parameter information of the medium to be measured. Exemplarily, when the medium to be measured is a rock mass, after the main control unit 10 processes and analyzes the acoustic wave detection signal, it can determine parameter information such as the porosity and pore fluid properties of the medium to be measured, and further realize downhole geological exploration, etc.

[0039] Among them, by controlling the frequency of the driving signal provided by the driving circuit 210 to the electromagnetic coil 2231, the frequency of the sound wave signal emitted by the sound emitter 220 can be controlled, so that the sound wave signal emitted by the sound emitter 220 can be the sound wave signal generated when the vibration reeds 222 are simultaneously controlled to vibrate by each permanent magnet 223, that is, the resonance signals at various positions of the vibration reeds 222. Thus, by controlling the amplitude, period, etc. of the driving signal provided to the electromagnetic coil 2231 by the driving circuit 210, the frequency, amplitude, etc. of the sound wave signal emitted by the sound emitter 220 can be realized.

[0040] Correspondingly, since the sound emission principle of the sound emitter 220 is to provide a driving signal to the electromagnetic coil 2231 to control the current flowing through the electromagnetic coil 2231, so that the permanent magnet 223 wound by the electromagnetic coil 2231 has a corresponding coupling torque to drive the vibration reed 222 to vibrate up and down to emit a sound wave signal. During the conversion process of the driving signal into the sound wave signal, there is a high conversion efficiency, so that the emitted sound wave signal can have a high intensity, improving the accuracy of the emitted sound wave signal, and enabling the sound wave detection device to be applied to deeper and farther detection fields; at the same time, the driving signal provided to the electromagnetic coil 2231 usually does not require a high voltage, and it is sufficient to make the current in the electromagnetic coil 2231 control the permanent magnet 223 to have a corresponding coupling torque, so that the transmitting unit 20 does not require high-voltage driving, which is beneficial to reducing the cost of the transmitting unit 20 and simplifying the structure of the transmitting unit 20, and further beneficial to reducing the overall cost of the sound wave detection device and simplifying the structure of the sound wave detection device; in addition, since the main sound-emitting structure of the sound emitter 220 is composed of the permanent magnet 223 and the vibration reed 222, and both the permanent magnet 223 and the vibration reed 222 have the characteristics of high temperature resistance, it is possible to stably emit sound wave signals in a high-temperature environment, so as to ensure that the sound wave detection device can work stably in a high-temperature environment signal, making the sound wave detection device have high temperature resistance characteristics and operation reliability, and further enabling the sound wave detection device to have a wider application scenario.

[0041] In an optional embodiment, Figure 4 is a schematic structural diagram of a transmitting unit provided by an embodiment of the present invention, as Figure 4As shown, the driving circuit may include a transformer T, a resistor R, and a shielded wire S; the primary coil of the transformer T is electrically connected to the driving signal output terminals D1 and D2 of the main control unit, the secondary coil of the transformer T is electrically connected to the electromagnetic coil 2231 of the sound emitter 220, the resistor R is connected in parallel across both ends of the secondary coil of the transformer T, and the resistor R can limit the current flowing through the electromagnetic coil 2231; the turns ratio of the primary coil and the secondary coil of the transformer T can be 1:1, or it can be other values, which can be set according to actual needs; the shielded wire S includes a plurality of shield coils, which are respectively arranged at the connection lines of each device in the driving circuit to perform signal shielding and prevent the signals transmitted by each connection line from being interfered by external signals, thereby improving the accuracy of the signals transmitted by the connection lines.

[0042] It should be noted that the above only exemplarily shows the case where one driving circuit 210 drives one sound emitter. In the embodiments of the present invention, when the transmitting unit includes a plurality of sound emitters, multiple driving circuits can be correspondingly provided, or one driving circuit can be correspondingly provided; when the transmitting unit includes a plurality of driving circuits, each driving circuit can drive one sound emitter, or each driving circuit can also drive two or more sound emitters; when the transmitting unit includes one driving circuit, the driving circuit can drive each sound emitter simultaneously. On the premise that the driving circuit can drive the sound emitter to emit sound waves, the embodiments of the present invention do not make specific limitations on this.

[0043] It can be understood that Figure 2 only exemplarily shows that each sound emitter includes 7 permanent magnets 223. In the embodiments of the present invention, a plurality of permanent magnets 223 are provided in each sound emitter, that is, the number of permanent magnets 223 can be 2 or more. On the premise that the driving vibration reed can be vibrated up and down, the embodiments of the present invention do not make specific limitations on the number of permanent magnets provided in each sound emitter. It can also be understood that the permanent magnets 223 in the same sound emitter 220 can be arranged regularly or irregularly, and the embodiments of the present invention do not make specific limitations on this.

[0044] Optionally, Figure 5 is a top view structural schematic diagram of a sound emitter provided by an embodiment of the present invention. With reference to Figure 2 and Figure 5 , the permanent magnets 223 of the same sound emitter 220 are arranged in sequence along the first direction X; the first direction X is parallel to the arrangement direction of the magnetic conductive side plates 2212 on the opposite sides of the magnetic conductive bottom plate 2211.

[0045] Among them, since the two ends of the vibration reed 222 are respectively fixed on the magnetic conductive side plates 2212 on the two opposite sides of the magnetic conductive bottom plate 2211, at this time, the arrangement direction X of the magnetic conductive side plates 2212 can be the extension direction of the long side of the vibration reed 222. In this way, by arranging the permanent magnets 223 in sequence along the first direction, that is, arranging in sequence along the extension direction of the long side of the vibration reed 222, when the permanent magnets 223 have corresponding coupling torques, the vibration reed 222 can have a larger amplitude and generate a sufficiently strong sound wave signal, which is conducive to improving the intensity of the emitted sound wave signal, and further conducive to improving the detection accuracy of the sound wave detection state.

[0046] Figure 6 is a schematic diagram of a cross-sectional structure of an acoustic wave detection device provided by an embodiment of the present invention, and is combined with reference Figure 2 and Figure 6 On the basis of the above embodiment, the acoustic wave detection device further includes: an acoustic system body 40, the acoustic system body 40 includes a plurality of grooves 401 arranged one by one corresponding to the plurality of sound-emitting bodies 220; the sound-emitting bodies 220 are located in the grooves 401; each groove 401 is arranged along the circumference of the acoustic system body 40, and the spacing between two adjacent grooves 401 is equal, that is, each groove 401 is evenly distributed in the circumference of the acoustic system body 40.

[0047] Among them, by arranging the sound-emitting body 210 in the groove 401 of the sound system main body 40, the sound-emitting body 210 can be prevented from protruding from the sound system main body 40, which is beneficial to reducing the volume of the sound wave detection device and is beneficial to the application of the sound wave detection device in a smaller detection space; at the same time, the grooves 401 accommodating the sound-emitting body 210 are evenly distributed along the circumference of the sound system main body 40, so that the sound wave signal emitted by the sound-emitting body 220 can be evenly propagated in all directions around the sound system main body 40, thereby being able to detect the medium to be measured in all directions around the sound system main body 40.

[0048] Optional, continue to refer to Figure 2 The groove 401 includes a stacked first groove portion 4011 and a second groove portion 4012; the magnetic conductive skeleton 221 is located in the first groove portion 4011, and the vibration reed 222 is located in the second groove portion 4012; the size of the first groove portion 4011 in the second direction X′ is smaller than the size of the second groove portion 4012 in the second direction X′; the second direction X′ is parallel to the plane where the magnetic conductive bottom plate 2211 is located.

[0049] Among them, when the size of the first groove portion 4011 in the second direction X′ is smaller than the size of the second groove portion 4012 in the second direction X′, the groove 401 formed by the first groove portion 4011 and the second groove portion 4012 is a stepped groove, so that it can accommodate the magnetic skeleton 221 and the vibration reed 222 at the same time, so that the sound-emitting body 220 is completely accommodated in the groove.

[0050] In an optional embodiment, the dimension W1 of the magnetic skeleton 221 in the second direction X′ is W1=Wa±ΔW, Wa is the dimension of the first groove portion 4011 in the second direction X′, and ΔW is the assembly tolerance between the magnetic skeleton 221 and the first groove portion 4011, thereby enabling the magnetic skeleton 221 to be directly snap-fitted and fixed in the first groove portion 4011, which is beneficial to simplify the assembly method of the magnetic skeleton 221.

[0051] In addition, continue to refer to Figure 2 The height of the magnetic conductive side plate 2212 is equal to the depth of the first groove portion 4011, so that the upper surface of the magnetic conductive side plate 2212 can be flush with the bottom of the second groove portion 4012, preventing the magnetic conductive side plate 2212 from protruding from the first groove portion 4011, and at the same time facilitating the assembly of the vibration reed 22; the thickness of the vibration reed 222 is less than the depth of the second groove portion 4012, so that the vibration reed 222 can vibrate up and down in the first groove portion 401 and the second groove portion 4012 to emit a sound wave signal.

[0052] Based on the above embodiments, continue to refer to Figure 2 The acoustic wave detection device may further include a plurality of protective plates 50 arranged in one-to-one correspondence with the plurality of grooves 401; the protective plates 50 and the grooves form a closed space for accommodating the sound-emitting body 220, thereby being able to protect the sound-emitting body 220, which is beneficial to improving the service life of the sound-emitting body 220, and further beneficial to improving the service life of the acoustic wave detection device as a whole, and is beneficial to improving the stability and reliability of the acoustic wave detection device as a whole.

[0053] Furthermore, the groove 401 may also include a third groove portion 4013 located on the side of the second groove portion 4012 away from the first groove portion 4011; the dimension of the third groove portion 4013 in the second direction X′ is greater than the dimension of the second groove portion 4012 in the second direction X′, so that the groove 401 formed by the first groove portion 4011, the second groove portion 4012 and the third groove portion 4013 is a two-step groove; at this time, the protective plate 50 is fixed in the third groove portion 4013; the thickness of the protective plate 50 is equal to the depth of the third groove portion 4013.

[0054] Among them, the protective plate 50 can be fixed to the bottom of the groove of the third groove portion 4013 by fasteners (such as threaded fasteners); at the same time, when the thickness of the protective plate 50 is equal to the depth of the third groove portion 4013, the upper surface of the protective plate 50 can be flush with the side wall of the third groove portion 4013, thereby preventing the protective plate 50 from protruding from the outer surface of the sound system body 40, which is beneficial to reducing the volume of the acoustic wave detection device and is beneficial to the application of the acoustic wave detection device in small-sized spaces.

[0055] Further, combined with referenceFigure 2 and Figure 6 The acoustic system main body 40 further includes a wire routing hole 402; each groove 401 surrounds the wire routing hole 402, that is, the wire routing hole 402 is located in the central area of the acoustic system main body 40; each electromagnetic coil 2231 is electrically connected to the drive circuit through a signal transmission line 2232; the signal transmission line 2232 penetrates through the wire routing hole 402; thus, the signal transmission line 2232 for transmitting the drive signal can be accommodated in the wire routing hole 402 to prevent the external environment from interfering with the signal transmitted by the signal transmission line 2232, enabling the signal transmission line 2232 to accurately transmit the signal; at the same time, the signal transmission line 2232 is located inside the acoustic system main body 40, enabling the acoustic system main body 40 to protect the signal transmission line 2232 and greatly reducing the aging speed of the signal transmission line 2232; in addition, since each groove 401 is arranged around the wire routing hole 402, the signal transmission line 2232 located in the wire routing hole 402 can directly penetrate the side wall of the wire routing hole 402 and be electrically connected to the electromagnetic coil 2231 of the sound generating body 220 in each groove 401, thereby simplifying the connection method and facilitating the simplification of the structure of the acoustic wave detection device.

[0056] Figure 7 is a structural block diagram of another acoustic wave detection device provided by an embodiment of the present invention. On the basis of the above embodiment, as Figure 7 shown, the acoustic wave detection device may further include a storage circuit 60, and the storage circuit 60 is electrically connected to the main control unit 10 and the signal conversion circuit 320 respectively; the main control unit 10 is further configured to control the storage circuit 60 to store the acoustic wave detection signal converted by the signal conversion circuit 320, so that after the detection is completed, the data in the storage circuit can be read out by a dedicated well logging data analysis software for subsequent analysis and processing.

[0057] Based on the same inventive concept, an embodiment of the present invention further provides an ultra-deep acoustic wave detection device, Figure 8 is a structural schematic diagram of an acoustic wave caliper provided by an embodiment of the present invention. The ultra-deep acoustic wave detection device includes: a transmitting sub-section 100, a receiving sub-section 200, an acoustic system sub-section 300, and the acoustic wave detection device provided by an embodiment of the present invention; wherein, the drive circuit 210 of the acoustic wave detection device is arranged in the transmitting sub-section 100, the receiving unit 30 of the acoustic wave detection device is arranged in the receiving sub-section 200, and the sound generating body 220 and the receiving crystal 310 of the acoustic wave detection device are both arranged in the acoustic system sub-section 300. At this time, the acoustic system main body 40 of the acoustic wave detection device can be a part of the acoustic system sub-section 300.

[0058] Among them, the receiving unit of the acoustic wave detection device includes at least one receiving crystal 310, that is, the receiving unit may include one or more receiving crystals 310, Figure 8Exemplarily shown is a case where 8 receiving crystals 310 are provided in the acoustic sub 300, and the specific number of the receiving crystals 310 can be set according to actual needs, and the embodiments of the present invention do not make specific limitations thereto. When multiple receiving crystals 310 are provided in the acoustic sub 300, there are sound insulation bodies between adjacent two receiving crystals 310 and between the receiving crystal 310 and the sound emitter 220 to prevent interference between them. When the ultra-deep ultrasonic wave detection device is applied to well logging, its transmitting sub 100, acoustic sub 300 and receiving sub 200 are connected in sequence, so that it can extend into the well to detect the rock mass in the well.

[0059] The above content is only to illustrate the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby. Any modification made on the basis of the technical solution according to the technical idea proposed by the present invention falls within the protection scope of the claims of the present invention.

Claims

1. An acoustic wave detection device, characterized in that, include: A transmitting unit (20), a receiving unit (30) and a main control unit (10); the transmitting unit (20) and the receiving unit (30) are both connected to the main control unit (10); The transmitting unit (20) comprises a driving circuit (210) and a plurality of sound-generating bodies (220), wherein the sound-generating bodies (220) comprise a magnetically conductive skeleton (221), a vibrating reed (222) and a plurality of permanent magnets (223); the vibrating reed (222) and the plurality of permanent magnets (223) are fixed on the magnetically conductive skeleton (221), the driving circuit (210) is electrically connected to each permanent magnet (223) for providing a driving signal, and the permanent magnet (223) drives the vibrating reed (222) to vibrate, thereby emitting a sound wave signal to the receiving unit (30).

2. The acoustic wave detection device according to claim 1, characterized in that, The magnetic conductive frame (221) comprises a magnetic conductive bottom plate (2211) and magnetic conductive side plates (2212) located on opposite sides of the magnetic conductive bottom plate (2211); an electromagnetic coil (2231) is wound around the permanent magnet (223), and each permanent magnet (223) is fixed on the magnetic conductive bottom plate (2211); a vibration reed (222) is located on a side of the permanent magnet (223) away from the magnetic conductive bottom plate (2211), and the vibration reed (222) is fixed on the magnetic conductive side plate (2212); and a driving circuit (210) is electrically connected to the electromagnetic coil (2231) of each permanent magnet (223).

3. The acoustic wave detection device according to claim 1, characterized in that, The receiving unit (30) comprises at least one receiving crystal (310) and a signal conversion circuit (320); the receiving crystal (310) is used to receive a sound wave feedback signal fed back by a medium to be detected; and the signal conversion circuit is used to convert the sound wave feedback signal into a sound wave detection signal.

4. An acoustic wave detection device according to claim 1, characterized in that, Also includes: The sound system body (40) comprises a plurality of grooves (401) arranged in one-to-one correspondence with a plurality of sound-emitting bodies (220); the sound-emitting bodies (220) are located in the grooves (401); each groove (401) is arranged along the circumference of the sound system body (40), and the spacing between two adjacent grooves (401) is equal, that is, each groove (401) is evenly distributed in the circumference of the sound system body (40).

5. The acoustic wave detection device according to claim 4, characterized in that, The groove (401) comprises a first groove portion (4011) and a second groove portion (4012) which are stacked; the magnetic conductive skeleton (221) is located in the first groove portion (4011), and the vibration reed (222) is located in the second groove portion (4012); the size of the first groove portion (4011) in the second direction X′ is smaller than the size of the second groove portion (4012) in the second direction X′; and the second direction X′ is parallel to the plane where the magnetic conductive bottom plate (2211) is located.

6. An acoustic wave detection device according to claim 5, characterized in that, The groove (401) further comprises a third groove portion (4013) located on the side of the second groove portion (4012) away from the first groove portion (4011); the dimension of the third groove portion (4013) in the second direction X′ is greater than the dimension of the second groove portion (4012) in the second direction X′, and the groove (401) formed by the first groove portion (4011), the second groove portion (4012) and the third groove portion (4013) is in a two-step shape.

7. An acoustic wave detection device according to claim 4, characterized in that, It further includes a plurality of protection plates (50) correspondingly arranged with a plurality of grooves (401); the protection plates (50) and the grooves (401) form a closed space for accommodating the sounding body (220).

8. An acoustic wave detection device according to claim 4, characterized in that, The sound system main body (40) further includes a wire routing hole (402); each groove (401) surrounds the wire routing hole (402), such that the wire routing hole (402) is located in the central area of the sound system main body (40); each electromagnetic coil (2231) is electrically connected to the drive circuit through a signal transmission line (2232); the signal transmission line (2232) passes through the wire routing hole (402), and the signal transmission line (2232) can be received in the wire routing hole (402).

9. An acoustic wave detection device according to claim 1, characterized in that, It further includes a storage circuit (60), which is electrically connected to the main control unit (10) and the signal conversion circuit (320) respectively; the main control unit (10) is further configured to control the storage circuit (60) to store the acoustic wave detection signal converted by the signal conversion circuit (320).

10. An ultra-long and ultra-deep sound wave detection device, characterized in that, It includes an acoustic wave detection device according to any one of claims 1 to 9, and further includes a transmitting sub-section (100), a receiving sub-section (200) and a sound system sub-section (300); the receiving unit (30) includes at least one receiving crystal (310) and a signal conversion circuit (320); the drive circuit (210) is arranged in the transmitting sub-section (100), the receiving unit (30) is arranged in the receiving sub-section (200), and the sounding body (220) and the receiving crystal (310) are both arranged in the sound system sub-section (300).

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