CN116338009A - Auxiliary liquid bag and ultrasonic CT inspection system for acoustic transducer - Google Patents

Abstract

The invention provides an auxiliary liquid package and an ultrasonic CT detection system for an acoustic wave transducer, which relate to the technical field of engineering detection equipment, wherein the auxiliary liquid package is used for wrapping the acoustic wave transducer and comprises the following components: coupling wrap-bag and coupling liquid. The coupling wrap-bag has a receiving cavity with an opening through which the acoustic transducer can enter the receiving cavity, the opening being capable of sealing the receiving cavity; the coupling liquid is filled into the accommodating cavity of the coupling wrap-bag, and the acoustic wave transducer can be immersed into the coupling liquid. Therefore, the auxiliary liquid bag can effectively perform sound wave test in dry holes with difficult water filling conditions or without water filling conditions, and is particularly suitable for test holes with dense crack development and serious water leakage. Meanwhile, the auxiliary liquid bag is reasonable in overall design, low in requirement on materials, low in manufacturing cost and convenient to use, and can improve the working efficiency of workers and the advantage of high detection accuracy.

Description

Auxiliary liquid bag and ultrasonic CT inspection system for acoustic transducer

technical field

The invention relates to the technical field of engineering detection equipment, in particular to an auxiliary liquid bag for an acoustic wave transducer and an ultrasonic CT detection system.

Background technique

Ultrasonic CT technology is to use sound waves to penetrate engineering media, and to image engineering structures through the travel time of ultrasonic waves inside the engineering media and the speed of energy attenuation. When the ultrasonic wave penetrates the engineering medium, its speed is related to the elastic modulus, shear modulus and density of the medium. The medium with high density, high modulus and high strength has high wave velocity and slow attenuation; broken and loose medium has low wave velocity and fast attenuation. Wave velocity can be used as a quantitative index for concrete strength and defect evaluation. Ultrasonic CT is especially suitable for studying the distribution of mechanical strength of engineering media, and is often used in engineering inspections to detect structural defects such as concrete strength, voids, and non-dense areas. Ultrasonic CT has the characteristics of high resolution, good reliability, and intuitive images, and has been more and more widely used in engineering structure detection and engineering disease diagnosis. Among them, elastic wave detection methods such as single-hole acoustic wave and cross-hole acoustic wave, as conventional geophysical detection methods in ultrasonic CT technology, have been widely used in rock mass quality inspection, consolidation curtain grouting quality inspection and other engineering quality inspections in recent years.

In related detection, the detection probe of the acoustic wave transducer needs to be inserted into a predetermined position in the detection hole, and the detection result is obtained based on the received sound wave by emitting sound waves. In practical applications, in order to obtain true and effective detection results, the detection hole must be filled with enough coupling medium, and the direction of the detection probe in the hole must be consistent with the direction of the hole or adhere to the wall, so that the sound wave can be transmitted to the wall or Acoustic waves are received from the wall. In this regard, in the testing process of various working conditions, in order to ensure the accuracy of the detection results, it is particularly important to have sufficient coupling medium in the detection hole so that the sound waves can be normally introduced and exported from the transducer.

At present, when it is necessary to detect horizontal holes, upward inclined holes, and water leakage holes, the existing processing method is to use water pipes to flush the detection holes, and then use waterproof materials to block the water. After the current measurement points are tested, Then move the detection probe to the next measuring point according to the demand, and then repeat the flushing and water blocking, so that the operation is repeated, and finally the detection of all the measuring points is completed.

However, the above-mentioned existing processing methods not only have a cumbersome process, which affects the test efficiency, but also have a poor water blocking effect, which cannot ensure that the detection probe is parallel to the hole direction or closely attached to the hole wall, and thus cannot guarantee the accuracy of the test results. For example, when performing single-hole sonic detection on perforated or rock mass fissures with severe water leakage, the entire detection process will be too cumbersome due to the difficulty of water blocking, resulting in too long detection time, and the detection probe is easily deflected in the hole , so that the transmission of sound waves may be disturbed, resulting in poor detection results, thereby affecting the final detection accuracy.

Contents of the invention

The invention provides an auxiliary liquid bag and an ultrasonic CT detection system for an acoustic wave transducer, which is used to solve the problems caused by flushing and plugging in the prior art when performing acoustic wave detection on horizontal holes, upward inclined holes, and water leakage holes, etc. For the technical problem that water cannot be accurately detected, by setting the auxiliary liquid bag, the detection probe of the acoustic wave transducer can be coupled with the inner wall of the detection hole, without flushing and water blocking, which simplifies the detection process and has high detection accuracy.

According to a first aspect of the present invention, there is provided an auxiliary liquid bag for an acoustic wave transducer, the auxiliary liquid bag is used to wrap the acoustic wave transducer, and the auxiliary liquid bag includes:

A coupling wrapping bag, the coupling wrapping bag has a receiving cavity, the receiving cavity has an opening, the acoustic wave transducer can enter the receiving cavity through the opening, and the opening can seal the receiving cavity;

a coupling liquid, the coupling liquid is filled into the accommodating cavity of the coupling wrapping bag, and the acoustic wave transducer can be immersed in the coupling liquid.

According to an auxiliary liquid bag for an acoustic wave transducer provided by the present invention, the coupling wrapping bag is constructed of a good sound-conducting film.

According to an auxiliary liquid pack for an acoustic wave transducer provided by the present invention, the coupling wrapping bag is constructed of low-permeability cloth.

According to an auxiliary liquid package for an acoustic wave transducer provided by the present invention, the composition of the coupling liquid includes an ultrasonic coupling agent.

According to the second aspect of the present invention, there is provided an ultrasonic CT detection system, the ultrasonic CT detection system includes a plurality of acoustic wave transducers, and the acoustic wave transducers pass through any one of the first aspects of the present invention The above-mentioned auxiliary liquid package for the acoustic wave transducer.

According to an ultrasonic CT detection system provided by the present invention, a plurality of acoustic wave transducers include a first acoustic wave emitter and a first acoustic wave receiver, the first acoustic wave emitter is used to emit sound waves, and the first acoustic wave The wave receiver is used for receiving the sound wave from the first radio wave transmitter.

According to an ultrasonic CT detection system provided by the present invention, the acoustic wave transducer further includes an acoustic wave emitting device, a first acoustic wave receiving device, and a second acoustic wave receiving device, and the first acoustic wave receiving device and the second acoustic wave receiving device The device is used for receiving the sound wave emitted by the sound wave emitting device.

According to an ultrasonic CT detection system provided by the present invention, the sound wave emitting device, the first sound wave receiving device and the second sound wave receiving device are fixedly connected in sequence.

According to an ultrasonic CT detection system provided by the present invention, the ultrasonic CT detection system further includes: a host computer, the host computer is used to send detection instructions to the acoustic wave transducer, and receive information from the acoustic wave transducer detecting the signal, and obtaining a detection result according to the detecting signal.

The auxiliary liquid package for the acoustic wave transducer provided by the present invention includes a coupling wrapping bag and a coupling liquid. The acoustic wave transducer can be placed in the coupling wrapping bag and immersed in the coupling liquid. When the acoustic wave transducer needs to be in the detection hole When performing acoustic wave detection, the coupling package bag can abut against the inner wall of the detection hole, and in the state where the coupling liquid is used as the medium, the acoustic wave transducer can effectively transmit the acoustic wave energy to the wall body, and can also accurately receive the energy from the wall body. sound wave energy.

Compared with the traditional treatment methods of flushing and blocking water, the auxiliary liquid bag of the present invention can effectively perform acoustic wave testing in dry holes with difficult or no water filling conditions, and is especially suitable for densely developed cracks and water leakage. Serious test hole. At the same time, the overall design of the auxiliary liquid bag is reasonable, the requirements for materials are low, the manufacturing cost is low, the advantages are convenient to use, and the working efficiency of the staff can be improved and the detection accuracy is high.

Description of drawings

In order to more clearly illustrate the present invention or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are the present invention. For some embodiments of the invention, those skilled in the art can also obtain other drawings based on these drawings without creative effort.

FIG. 1 is a schematic structural view of an auxiliary liquid bag for an acoustic wave transducer according to an embodiment of the present invention;

Fig. 2 is an application scene diagram of the acoustic wave transducer in the ultrasonic CT detection system according to an embodiment of the present invention in the single-shot and single-receive mode;

Fig. 3 is an application scene diagram of the acoustic wave transducer in the ultrasonic CT detection system according to an embodiment of the present invention in the mode of single sending and double receiving.

Reference signs:

1. Coupling bag; 2. Coupling liquid; 3. Acoustic transducer; 11. Auxiliary liquid bag; 12. Auxiliary liquid bag; 31. First sound wave transmitter; 32. First sound wave receiver; 41. Sound wave Emitting device; 42, first sound wave receiving device; 43, second sound wave receiving device.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The applicant found in the research related to acoustic wave testing that when the acoustic wave transducer performs acoustic wave detection in the test hole, a coupling medium such as water needs to be filled between the acoustic wave transducer and the hole wall, so that the acoustic wave transducer can use the coupling The medium transmits the sound wave to the wall. At the same time, the coupling medium and the acoustic wave transducer need to be placed in a packaging bag. The packaging bag needs to be adapted to different detection environments. For this, the auxiliary device for auxiliary acoustic wave transducer detection needs to solve the following question:

1. The coupling medium needs to be able to move with the acoustic transducer, so that the acoustic transducer can be detected at different positions in the test hole, and at the same time, the acoustic transducer can adapt to different dry hole test environments;

2. The coupling medium needs to have sufficient fluidity so that the coupling medium can fit the hole wall under different working conditions, so that the sound waves emitted by the acoustic wave transducer can be effectively transmitted to the wall;

3. The packaging bag needs to have the characteristics of "deformable" and "good sound wave guide" so that the sound wave can be transmitted normally, and the packaging bag should also have certain wear resistance;

4. The auxiliary device needs to meet the actual application effect in multiple scenarios such as horizontal holes, upward slope holes, and water leakage holes.

Based on this, the applicant adopted the following design ideas:

1. Taking the selection of coupling medium and packaging bag as the entry point and breakthrough point, the concept of coupling liquid bag is proposed, so that the coupling liquid bag can be bound to the acoustic wave probe, so that the coupling medium can wrap the acoustic wave probe at the same time, and the coupling medium can follow the The sonic probe moves between several different measuring points;

2. Select a variety of different coupling media for research, for example, carry out the test analysis and screening of the sound conductivity of solid and different liquid coupling agents from the perspective of three-phase;

3. Select a variety of packaging bags of different materials for research, for example, select acoustic film, rubber film, geotextile, high-density fabric, roving, fine gauze, etc., for test analysis and screening;

4. Simulate a variety of test holes in different application scenarios, such as vertical holes, horizontal holes, downward inclined holes, upward inclined holes, top holes, etc., to study and analyze the feasibility and effectiveness of the application of coupling liquid packs.

In the actual research, aiming at the four problems that need to be solved by the above-mentioned auxiliary devices, the applicant has taken the following four aspects of research work:

1. First, according to the testing principle of the acoustic probe in the test hole, the propagation path of the acoustic wave is verified. In this verification, the test equipment includes a single-shot single-receiver acoustic wave transducer and a single-shot double-receiver acoustic wave transducer. A hollow water tank is set in the horizontal concrete surface, and the test equipment is placed in the hollow water tank. It is tested in the state of no filling, water filling, and water bag filling, and it can also avoid the coupling liquid such as water from immersing the test equipment at the same time. Through the test results, it is found that when the test equipment and the horizontal concrete surface are well coupled with the participation of the coupling medium, the test guided wave is obvious and the wave speed is accurate, which verifies the sound wave in the transmitting transducer-coupling liquid-concrete-coupling liquid-receiving transducer The effective propagation path of the energy device.

2. The coupling medium needs to be a "deformable" fluid so that it can be effectively attached to the hole wall under different working conditions. For this, the applicant selected a variety of different coupling mediums for testing. In this test, butter, water, and special acoustic wave coupling fluid were selected for the test. The test results show that the consistency of butter is relatively high, and the sound conductivity of water is relatively low compared with the special acoustic wave coupling fluid. Therefore, the coupling medium is preferably a special acoustic wave coupling fluid.

3. The packaging bag should have the characteristics of "deformable" and "good sound wave guide", and should also have a certain wear resistance. For this, the applicant chose a variety of different materials to manufacture the packaging bag for the convenience of testing . In this test, common sound-conducting films, rubber films, thin-layer geotextiles, high-density fabrics, rovings, fine gauzes, etc. were tested. Through the test results, it is found that the sound-conducting film as the material of the packaging bag can meet the adaptive "deformation" ability, sound-conducting ability, bonding effect, and wear resistance required by the test.

4. Combined with the actual application of multiple scenarios such as horizontal holes, upward inclined holes, and leaking holes, steel casings, concrete structures, and indoor floors were selected as test models to simulate and test the coupling liquid bag sound guide effect, bonding effect, conduction capacity and Applicability to dry hole environment under multi-inclination conditions.

Thus, through continuous attempts, groping, testing and demonstration, the applicant has researched and obtained an auxiliary liquid bag for the acoustic wave transducer, which can wrap the acoustic wave transducer. For horizontal holes, downward inclined holes, upward inclined holes, etc., the auxiliary liquid package can be fully coupled with the inner wall of the detection hole to ensure that the acoustic wave transducer can realize sound wave testing with high quality and efficiency.

Specifically, in an embodiment according to the present invention, the auxiliary liquid package for the acoustic wave transducer includes: a coupling wrapping bag 1 and a coupling liquid 2 .

Wherein, as shown in Figure 1, the coupling wrapping bag 1 has an accommodation chamber, and the accommodation chamber has an opening, and the acoustic wave transducer 3 can enter the accommodation chamber through the opening, and the opening can seal the accommodation chamber; the coupling liquid 2 is filled into the coupling wrapping bag 1 In the accommodation cavity, the acoustic wave transducer 3 can be immersed in the coupling liquid.

It can be understood that in practical applications, when it is necessary to detect detection holes that are difficult to fill with water, for example, when detecting horizontal holes, upwardly inclined holes, or drilling holes with poor geological conditions where the development of rock mass cracks leads to serious water leakage, etc. , the acoustic wave probe of the acoustic wave transducer 3 can be inserted into the accommodation cavity of the coupling packaging bag 1, and then enough coupling liquid 2 is injected into the accommodation cavity, so that the acoustic wave transducer 3 can be completely immersed in the coupling liquid 2, and then The opening of the accommodation cavity is closed to prevent the coupling liquid 2 from flowing out, and finally the acoustic wave transducer 3 can be inserted into the detection hole to detect the detection hole.

In this embodiment, after the auxiliary liquid pack follows the acoustic wave transducer into the detection hole, since the coupling liquid 2 in the auxiliary liquid pack has sufficient fluidity, the coupling wrapping bag 1 will fully When it abuts against the inner wall of the detection hole, the coupling liquid 2 can be used as the transmission medium of the sound wave. During the process of the acoustic wave transducer 3 emitting the sound wave, the coupling liquid 2 can effectively transmit the sound wave emitted by the acoustic wave transducer 3 to the wall. When the acoustic wave transducer 3 receives sound waves, the coupling liquid 2 can allow the sound waves in the wall to be effectively transmitted to the acoustic wave transducer 3 . Correspondingly, when the acoustic wave transducer 3 needs to be moved to other measuring points in the detection hole, the acoustic wave transducer 3 can be directly moved because the auxiliary liquid package wraps the acoustic wave transducer 3 .

Therefore, with the help of the auxiliary liquid pack in this embodiment, the effective transmission of sound waves between the acoustic wave transducer and the wall of the detection hole can be realized without coupling liquid such as water in the detection hole, and can be applied to various The detection hole breaks through the limitations of horizontal holes, upward slope holes, and water leakage holes. Compared with the traditional water filling method, the auxiliary liquid bag in this embodiment can greatly improve the detection speed, detection efficiency and detection convenience.

Exemplarily, the coupling wrapping bag 1 is constructed of a good sound-conducting film, that is, the coupling wrapping bag 1 can be constructed of a sound-conducting film with excellent sound-conducting properties, for example, it can be made of an organic polymer film material polyimide .

Exemplarily, the coupling wrapping bag 1 is made of low-permeability cloth, that is, the coupling wrapping bag 1 can be made of cloth with low permeability, for example, can be made of waterproof fabric.

Exemplarily, the components of the coupling liquid 2 include an ultrasonic coupling agent.

In an embodiment according to the present invention, an ultrasonic CT detection system is also provided, wherein the ultrasonic CT detection system includes an acoustic wave transducer, and the acoustic wave transducer is wrapped by the auxiliary liquid bag in this embodiment.

In a specific embodiment, the plurality of sound wave transducers include a first sound wave transmitter and a first sound wave receiver, the first sound wave transmitter is used to emit sound waves, and the first sound wave receiver is used to receive sound waves from the first sound wave receiver. A radio emitter emits sound waves.

Exemplarily, as shown in FIG. 2, the first acoustic wave transmitter 31 and the first acoustic wave receiver 32 can be respectively inserted in different detection holes. In actual detection, the first acoustic wave transmitter 31 emits After the sound wave is transmitted to the wall body through the auxiliary liquid bag 11 , the first sound wave receiver 32 can receive the sound wave from the wall body through the auxiliary liquid bag 12 to realize detection.

It can be understood that both the first sound wave transmitter 31 and the first sound wave receiver 32 are single-send and single-receive sound wave transducers.

In yet another specific embodiment, the acoustic wave transducer includes an acoustic wave transmitting device, a first acoustic wave receiving device and a second acoustic wave receiving device, the first acoustic wave receiving device and the second acoustic wave receiving device are used to receive Sound waves emitted by the device.

Exemplarily, as shown in FIG. 3 , the acoustic wave transducer can be inserted into the detection. In actual detection, after the sound wave emitted by the sound wave emitting device 41 is transmitted to the wall via the auxiliary liquid package, the first sound wave receiving device 42 And the second acoustic wave receiving device 43 can receive the acoustic wave from the wall through the auxiliary liquid bag, so as to realize the detection.

Optionally, the sound wave emitting device 41 , the first sound wave receiving device 42 and the second sound wave receiving device 43 are fixedly connected in sequence.

It can be understood that, in this embodiment, the acoustic wave transducer is a single-emitting, double-receiving acoustic wave transducer.

Further, in this embodiment, the ultrasonic CT detection system further includes: a host computer, which is used to send detection instructions to the acoustic wave transducer, receive detection signals from the acoustic wave transducer, and obtain detection results according to the detection signals .

In practical applications, when the acoustic wave transducer is inserted into the detection hole, the host computer can send detection instructions to the acoustic wave transducer, thereby controlling the acoustic wave transducer to emit sound waves. After receiving the sound wave from the body, the sound wave transducer can send the detection signal corresponding to the sound wave to the host, and finally, the host can obtain the corresponding detection result according to the detection signal.

It can be seen that the auxiliary liquid bag for the acoustic wave transducer in this embodiment has the following advantages:

The auxiliary liquid package for the acoustic wave transducer in this embodiment includes a coupling wrapping bag and a coupling liquid. The acoustic wave transducer can be placed in the coupling wrapping bag and immersed in the coupling liquid. When performing acoustic wave detection, the coupling package bag can abut against the inner wall of the detection hole, and in the state of the coupling liquid as the medium, the acoustic wave transducer can effectively transmit the acoustic wave energy to the wall body, and can also accurately receive the energy from the wall body. Body acoustic energy.

Compared with the traditional treatment methods of flushing and blocking water, the auxiliary liquid bag of the present invention can effectively perform acoustic wave testing in dry holes with difficult or no water filling conditions, and is especially suitable for densely developed cracks and water leakage. Serious test hole. At the same time, the overall design of the auxiliary liquid bag is reasonable, the requirements for materials are low, the manufacturing cost is low, the advantages are convenient to use, and the working efficiency of the staff can be improved and the detection accuracy is high.

The device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without any creative efforts.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (9)

1. an auxiliary liquid bag for acoustic wave transducer, it is characterized in that, described auxiliary liquid bag is used for wrapping acoustic wave transducer, and described auxiliary liquid bag comprises: A coupling wrapping bag, the coupling wrapping bag has a receiving cavity, the receiving cavity has an opening, the acoustic wave transducer can enter the receiving cavity through the opening, and the opening can seal the receiving cavity; a coupling liquid, the coupling liquid is filled into the accommodating cavity of the coupling wrapping bag, and the acoustic wave transducer can be immersed in the coupling liquid. 2. The auxiliary liquid bag for an acoustic wave transducer according to claim 1, wherein the coupling wrapping bag is constructed of a good sound-conducting film. 3. The auxiliary liquid pack for an acoustic wave transducer according to claim 1, wherein the coupling wrapping bag is constructed of low-permeability cloth. 4. The auxiliary liquid pack for an acoustic wave transducer according to claim 1, wherein the composition of the coupling liquid includes an ultrasonic coupling agent. 5. An ultrasonic CT detection system, characterized in that, the ultrasonic CT detection system comprises an acoustic wave transducer, and the acoustic wave transducer passes through the acoustic wave transducer as described in any one of claims 1 to 4 Auxiliary liquid bag package for the device. 6. The ultrasonic CT detection system according to claim 5, wherein the acoustic wave transducer comprises a first acoustic wave transmitter and a first acoustic wave receiver, and the first acoustic wave transmitter is used to emit sound waves, so The first sound wave receiver is used to receive the sound wave from the first radio wave transmitter. 7. The ultrasonic CT detection system according to claim 5, wherein the acoustic wave transducer comprises an acoustic wave emitting device, a first acoustic wave receiving device and a second acoustic wave receiving device, the first acoustic wave receiving device and the second acoustic wave receiving device The second sound wave receiving device is used for receiving the sound wave emitted by the sound wave emitting device. 8 . The ultrasonic CT detection system according to claim 7 , wherein the sound wave emitting device, the first sound wave receiving device and the second sound wave receiving device are fixedly connected in sequence. 9. The ultrasonic CT detection system according to claim 5, characterized in that, the ultrasonic CT detection system further comprises: a host, the host is used to send detection instructions to the acoustic wave transducer, and receive instructions from the acoustic wave transducer The detection signal sent by the acoustic wave transducer, and the detection result is obtained according to the detection signal.

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