Slurry ultrasonic detection system

Abstract

The present invention relates to a slurry ultrasonic detection system, comprising: a slurry conveying pipe assembly, comprising at least a first type of conveying pipe and a second type of conveying pipe for conveying slurry, the first type of conveying pipe and the second type of conveying pipe being interconnected, wherein the second type of conveying pipe comprises at least one detection reference plane; an ultrasonic probe assembly, comprising at least one set of ultrasonic probe array elements assembled on the detection reference plane, wherein the ultrasonic probe array element set comprises at least one ultrasonic probe array element linear array, wherein the number of probe array elements in any ultrasonic probe array element linear array is n, where n is an integer ≥ 2; and for the n probe array elements in the same ultrasonic probe array element linear array, the arrangement direction of the n probe array elements is perpendicular to the conveying flow direction of the slurry through the detection reference plane. The present invention can effectively implement ultrasonic scanning detection of slurry, improve the efficiency of ultrasonic scanning detection, provide high resolution of ultrasonic scanning detection images, and reduce the cost of ultrasonic scanning detection.

Description

Technical Field

[0001] The invention relates to an ultrasonic scanning detection system, in particular to a slurry ultrasonic detection system. Background Art

[0002] In the lithium battery industry, slurry is typically delivered to designated workstations via circular pipes. To improve the quality of lithium battery production, the slurry within these pipes must be monitored. Prior art methods for ultrasonic testing of slurry are often employed. To ensure compatibility with the pipes, ultrasonic scanning typically employs a circularly arranged ultrasonic probe to monitor the slurry within the pipes.

[0003] When using a ring-shaped ultrasonic probe to perform ultrasonic testing on slurry, people in this technical field have found that the ring-shaped ultrasonic probe has problems such as complex installation and high cost. In addition, the slurry ultrasonic transmission circular scanning information generated by the ring-shaped ultrasonic probe requires the use of a CT back-projection reconstruction method to determine the detection status of the slurry. The post-processing and analysis methods such as the CT back-projection reconstruction method are complex, resulting in low efficiency and high detection cost for the ultrasonic testing of slurry.

[0004] Furthermore, to improve slurry delivery efficiency, a larger-diameter circular delivery tube is generally used for slurry delivery. Understandably, when a larger-diameter circular delivery tube is used to deliver slurry, the ultrasonic energy will experience severe attenuation, resulting in a strong reflection signal in the area near the array elements of the ultrasonic probe (near field), and a weak reflection signal in the area far from the array elements of the ultrasonic probe (far field). Furthermore, the ultrasonic probe's transmission signal is weak, resulting in low resolution of the ultrasonic scanning image, making it impossible to accurately and effectively detect and analyze the slurry quality in real time.

[0005] It can be seen from the above description that the existing method of ultrasonic scanning detection of slurry is difficult to meet the demand for ultrasonic detection of slurry in industrial production with high quality. Summary of the Invention

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a slurry ultrasonic detection system that can effectively realize ultrasonic scanning detection of slurry, improve the efficiency of ultrasonic scanning detection, and reduce the cost of ultrasonic scanning detection.

[0007] According to the technical solution provided by the present invention, a slurry ultrasonic detection system comprises:

[0008] A slurry conveying pipe assembly, comprising at least a first type of conveying pipe and a second type of conveying pipe for conveying slurry, wherein the first type of conveying pipe and the second type of conveying pipe are in communication with each other, wherein the second type of conveying pipe comprises at least one detection reference plane;

[0009] An ultrasonic probe assembly, comprising at least one ultrasonic probe array element group mounted on a detection reference plane, wherein the ultrasonic probe array element group comprises at least one ultrasonic probe array element linear array, and the number of probe array elements in any ultrasonic probe array element linear array is n, where n is an integer ≥ 2;

[0010] For the n probe array elements in the same ultrasonic probe array element linear array, the arrangement direction of the n probe array elements is perpendicular to the conveying flow direction of the slurry flowing through the detection reference plane.

[0011] In the second type of transport tube, the lumen corresponding to the detection reference plane is configured as an ultrasonic scanning detection lumen, wherein:

[0012] The cross-sectional shape of the ultrasonic scanning detection cavity is different from the cross-sectional shape of the first type of conveying pipe. The cross-sectional shape of the slurry flowing through the ultrasonic scanning detection cavity is a rectangle, and the two sides of the rectangle are a and b, respectively, where a≤b;

[0013] For n probe array elements in the same ultrasonic probe array element linear array, the arrangement direction of the n probe array elements is consistent with the length direction of the side length of the length b.

[0014] When the inner cross section of the first type of delivery tube is circular and has a diameter of R, the a <R。

[0015] The second type of delivery pipe is connected to the corresponding first type of delivery pipe through the delivery conversion pipe, wherein,

[0016] When the slurry is transported, the cross-sectional areas of the slurry flowing through the first type of transport pipe, the transport conversion pipe and the second type of transport pipe are equal.

[0017] When the slurry to be inspected is transported by the slurry transport pipe assembly, at least an ultrasonic probe array element group on the detection reference plane is configured to perform ultrasonic scanning on the slurry to be inspected, so as to generate slurry ultrasonic scanning information after ultrasonic scanning detection, and determine the slurry characteristic state of the slurry to be inspected based on the slurry ultrasonic scanning information, wherein,

[0018] The slurry ultrasonic scanning information includes at least one group of ultrasonic scanning signal groups to be detected,

[0019] For each group of ultrasonic scanning signal groups to be detected, the ultrasonic scanning signal group to be detected includes a plurality of ultrasonic scanning signals to be detected, and the ultrasonic scanning signals to be detected are ultrasonic reflection signals to be detected or ultrasonic transmission signals to be detected, wherein,

[0020] When the ultrasonic scanning signal to be detected is an ultrasonic reflection signal to be detected, the ultrasonic scanning signal group to be detected in which the ultrasonic scanning signal to be detected is located forms an ultrasonic reflection signal group to be detected;

[0021] When the ultrasonic scanning signal to be detected is an ultrasonic transmission signal to be detected, the ultrasonic scanning signal group to be detected in which the ultrasonic scanning signal to be detected is located forms an ultrasonic transmission signal group to be detected;

[0022] The slurry characteristic state includes the quality state of the slurry to be inspected and / or the defect detection state in the slurry to be inspected, wherein the quality state of the slurry to be inspected includes one or more of the viscosity of the slurry, the solid content of the slurry, the particle distribution in the slurry and / or the slurry flow rate;

[0023] The defect detection status in the slurry to be inspected includes defect status, defect type and / or defect property information.

[0024] When generating a group of ultrasonic reflection signals to be detected, it includes:

[0025] configuring a group of ultrasonic probe array element groups on the detection reference plane as a target ultrasonic probe array element group, and selecting at least one ultrasonic probe array element linear array in the target ultrasonic probe array element group as a target ultrasonic probe array element linear array;

[0026] Ultrasonic signals are transmitted to the slurry to be inspected by using probe array elements in the linear array of target ultrasonic probe array elements, and ultrasonic reflection signals to be inspected are received by using probe array elements in the linear array of target ultrasonic probe array elements, so as to form an ultrasonic reflection signal group to be inspected based on each received ultrasonic reflection signal to be inspected.

[0027] When generating a group of ultrasonic transmission signals to be detected, it includes:

[0028] The second type of delivery pipe includes at least two detection reference planes;

[0029] The ultrasonic probe assembly includes at least two groups of ultrasonic probe array elements, wherein the two groups of ultrasonic probe array elements are respectively assembled on two corresponding detection reference planes, and the two groups of ultrasonic probe array elements are correspondingly distributed;

[0030] configuring one group of ultrasound probe array elements as target transmitting ultrasound probe array elements and configuring another group of ultrasound probe array elements as target receiving ultrasound probe array elements;

[0031] An ultrasonic signal is transmitted to the slurry to be inspected by using a probe element in a linear array of at least one ultrasonic probe element in a target transmitting ultrasonic probe element group, and an ultrasonic transmission signal to be inspected is received by using a probe element in a linear array of at least one ultrasonic probe element in a target receiving ultrasonic probe element group, so as to form an ultrasonic transmission signal group to be inspected based on all received ultrasonic transmission signals to be inspected.

[0032] The method for determining the defect detection status of the slurry to be inspected based on the slurry ultrasonic scanning information includes:

[0033] Extracting a group of ultrasonic scanning signal groups to be detected from the slurry ultrasonic scanning information, and determining a characteristic value of a scan signal of a defect to be detected of any ultrasonic scanning signal to be detected in the group of ultrasonic scanning signal to be detected;

[0034] Based on the characteristic value of the scan signal of the defect to be detected of each ultrasonic scan signal to be detected and the corresponding probe array element, a mapping spectrum of the characteristic value of the scan signal of the defect to be detected and the probe array element is constructed;

[0035] The internal defect detection state of the slurry to be inspected is determined based at least on the constructed scanning signal characteristic value of the defect to be inspected-probe array element mapping spectrum, wherein:

[0036] When the defect state is determined to be defects in the slurry to be inspected, the determined defect property information includes the number of defects, the locations of defects and / or the sizes of defects, and the defect types include bubbles and / or agglomerates.

[0037] When the ultrasonic scanning signal group to be inspected is an ultrasonic reflection signal group to be inspected, constructing a mapping spectrum of characteristic values ​​of the defect scanning signal to be inspected and probe array elements includes:

[0038] For each ultrasonic reflection signal to be inspected in the ultrasonic reflection signal group to be inspected, the ultrasonic reflection signal to be inspected is compared with a corresponding reference ultrasonic reflection signal to identify and extract a defect ultrasonic reflection signal of the current ultrasonic reflection signal to be inspected, wherein the reference ultrasonic reflection signal is generated by ultrasonically scanning a reference slurry using a linear array of target ultrasonic probe elements, and the reference slurry is a slurry of the same type as the slurry to be inspected and has no defects;

[0039] Based on each defect ultrasonic reflection signal, the corresponding defect reflection signal characteristic value is extracted and generated, and the defect reflection signal characteristic value is used as the defect scanning signal characteristic value;

[0040] The probe elements in the linear array of target ultrasonic probe elements are numbered in sequence, and the probe elements are mapped one-to-one with the characteristic values ​​of the reflection signal of the defect to be detected according to the numbering order of the probe elements to construct a mapping spectrum between the characteristic value of the scanning signal of the defect to be detected and the probe element.

[0041] When the ultrasonic scanning signal group to be inspected is an ultrasonic transmission signal group to be inspected, constructing a mapping spectrum of characteristic values ​​of the defect scanning signal to be inspected and probe array elements includes:

[0042] For each ultrasonic transmission signal to be detected in the ultrasonic transmission signal group to be detected, determining a transmission signal characteristic value of a defect to be detected of each ultrasonic transmission signal to be detected, and using the transmission signal characteristic value of the defect to be detected as a scanning signal characteristic value of the defect to be detected;

[0043] The probe array elements of the target receiving ultrasonic probe array element group are numbered in sequence, and the probe array elements are mapped one by one to the characteristic values ​​of the transmission signal of the defect to be detected according to the numbering sequence of the probe array elements to construct a mapping spectrum of the characteristic value of the scanning signal of the defect to be detected-probe array element, wherein,

[0044] When determining the characteristic value of the transmission signal of the defect to be detected of each ultrasonic transmission signal to be detected, it includes:

[0045] Extracting a characteristic value of a transmission signal to be detected of each ultrasonic transmission signal to be detected;

[0046] Extracting a reference transmission signal characteristic value of a reference slurry transmission signal corresponding to the probe array element, wherein the reference slurry is a slurry of the same type as the slurry to be inspected and has no defects;

[0047] For each transmission signal characteristic value to be detected, determine the reference transmission signal characteristic value of the reference slurry transmission signal under the probe array element corresponding to the transmission signal characteristic value to be detected, and calculate the corresponding attenuation ratio A based on the reference transmission signal characteristic value determined under the corresponding probe array element. s , and the calculated attenuation ratio A s The characteristic value of the transmission signal of the defect to be detected is used as the current ultrasonic transmission signal to be detected.

[0048] When there is at least one characteristic value of the scan signal of the defect to be detected that meets the defect judgment threshold in the mapping spectrum of the characteristic value of the scan signal of the defect to be detected and the probe array element, it is determined that the defect state is a defect in the slurry to be detected;

[0049] When the defect state is determined to be a defect in the slurry to be detected, and corresponding characteristic values ​​of the scanning signal of the defect to be detected exist for any number of consecutively numbered probe array elements, the area enclosed by the plurality of characteristic values ​​of the scanning signal of the defect to be detected and the corresponding probe array element numbers is recorded as Q1;

[0050] When the defect state is determined to be defective, the defect property information of the slurry to be inspected is determined based on at least the corresponding included area Q1 in the mapping spectrum of the characteristic value of the defect scanning signal to be inspected and the probe array element.

[0051] Methods for determining the number of defects in the slurry to be inspected include:

[0052] The number of regions Q1 corresponding to the characteristic value of the scanning signal of the defect to be detected and the probe array element mapping spectrum is counted, and the counted number of regions Q1 is used as the number of defects.

[0053] Methods for determining the location of defects in the slurry to be inspected include:

[0054] For each region Q1, determine the maximum value of the characteristic value of the scan signal of the defect to be detected corresponding to the region Q1, and based on the determined maximum value of the characteristic value of the scan signal of the defect to be detected, determine the probe array element corresponding to the maximum characteristic value of the scan signal of the defect to be detected and the number of the probe array element;

[0055] The position of the current defect in the slurry to be inspected is estimated based on the number of the probe array elements and the distribution positions of the probe array elements.

[0056] Methods for determining the size of defects within slurry include:

[0057] Constructing a reference defect scanning signal characteristic value-probe array element mapping spectrum group, wherein the reference defect scanning signal characteristic value-probe array element mapping spectrum group includes a plurality of reference defect scanning signal characteristic value-probe array element mapping spectra, wherein constructing the reference defect scanning signal characteristic value-probe array element mapping spectrum group includes:

[0058] Prepare a reference slurry group, and perform ultrasonic scanning on each reference slurry in the reference slurry group based on an ultrasonic probe assembly to generate a corresponding reference ultrasonic scanning signal group, wherein the reference slurry is of the same type as the slurry to be inspected and contains a known defect size;

[0059] Determining a reference defect scanning signal characteristic value of each reference ultrasonic scanning signal in each reference ultrasonic scanning signal group, constructing a reference defect scanning signal characteristic value-probe array element mapping spectrum, and forming a reference defect scanning signal characteristic value-probe array element mapping spectrum group based on all constructed reference defect scanning signal characteristic value-probe array element mapping spectra;

[0060] Based on each reference defect scanning signal characteristic value-probe array element mapping spectrum, determining the region Q2 corresponding to the current reference defect scanning signal characteristic value-probe array element mapping spectrum, and generating a corresponding reference defect region feature based on region Q2;

[0061] Generate a defect size reference defect area feature set based on the reference defect area features of all reference slurries and their corresponding reference defect sizes;

[0062] For each region Q1, determine the defect region feature to be detected corresponding to the region Q1, and search for a reference defect region feature corresponding to the defect region feature to be detected in a defect size reference defect region feature set;

[0063] Determine the reference defect size corresponding to the searched reference defect region feature, and estimate the defect size corresponding to the current region Q1.

[0064] The advantages of the present invention are as follows: the second type of delivery pipe is used in conjunction with the first type of delivery pipe, at least one detection reference plane is provided through the second type of delivery pipe, the ultrasonic probe assembly can be assembled on the detection reference plane, and the ultrasonic probe assembly can be used to perform ultrasonic scanning detection on the slurry flowing through the ultrasonic scanning detection cavity, so that the ultrasonic probe assembly can be more evenly approached to the flowing slurry, thereby simplifying the installation process of the ultrasonic probe assembly, weakening the attenuation of ultrasonic energy, reducing costs, improving the resolution of the ultrasonic detection image, and improving the efficiency and accuracy of ultrasonic scanning detection of the slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 The figure is a schematic diagram of an embodiment of a slurry conveying pipe assembly and an ultrasonic probe assembly in the slurry ultrasonic detection system of the present invention.

[0066] Figure 2 Schematic diagram of an embodiment of the present invention of the mapping spectrum between characteristic value of the scanning signal of the defect to be detected and the probe array element.

[0067] Figure 3 This is a schematic diagram of an embodiment of the reference defect scanning signal characteristic value-probe array element mapping spectrum group of the present invention.

[0068] Figure 4 Schematic diagram of an embodiment of the present invention for comparing an ultrasonic reflection signal to be detected with a reference ultrasonic reflection signal, wherein A is the reference ultrasonic reflection signal and B is the ultrasonic reflection signal to be detected.

[0069] Figure 5 Schematic diagram of an embodiment of the present invention for comparing an ultrasonic transmission signal to be detected with a reference ultrasonic transmission signal, wherein C is the reference ultrasonic transmission signal and D is the ultrasonic transmission signal to be detected.

[0070] Explanation of the reference numerals: 1 - first type of delivery tube, 2 - second type of delivery tube, 3 - delivery conversion tube, 4 - detection reference plane, 5 - probe array element. DETAILED DESCRIPTION

[0071] The present invention will be further described below with reference to specific drawings and embodiments.

[0072] In order to effectively implement ultrasonic scanning detection of slurry, improve the efficiency and accuracy of ultrasonic scanning detection, and reduce the cost of ultrasonic scanning detection, the present invention provides a slurry ultrasonic detection system. Specifically, the slurry ultrasonic detection system includes:

[0073] The slurry conveying pipe assembly comprises at least a first type conveying pipe 1 and a second type conveying pipe 2 for conveying slurry, wherein the first type conveying pipe 1 and the second type conveying pipe 2 are connected to each other, wherein the second type conveying pipe 2 comprises at least one detection reference plane 4;

[0074] An ultrasonic probe assembly, comprising at least one ultrasonic probe array element group mounted on a detection reference plane 4, wherein the ultrasonic probe array element group comprises at least one ultrasonic probe array element linear array, and the number of probe array elements 5 in any ultrasonic probe array element linear array is n, where n is an integer ≥ 2;

[0075] For the n probe array elements 5 in the same ultrasonic probe array element linear array, the arrangement direction of the n probe array elements 5 is perpendicular to the conveying flow direction of the slurry flowing through the detection reference plane 4 .

[0076] It can be seen from the above description that in the prior art, such as lithium battery production or other scenarios using slurry production, it is necessary to use a conveying pipeline to transport the slurry. Therefore, the slurry ultrasonic detection system of the present invention should be able to transport the slurry and perform ultrasonic scanning and detection on the slurry during the slurry transportation process, wherein the conveying pipeline for conveying the slurry includes at least a slurry conveying pipe assembly, that is, when the slurry is transported by the conveying pipeline, it at least flows through the slurry conveying pipe assembly.

[0077] Figure 1 FIG2 shows an embodiment of a slurry conveying pipe assembly according to the present invention, wherein the slurry conveying pipe assembly includes at least a first-type conveying pipe 1 and a second-type conveying pipe 2. The first-type conveying pipe 1 and the second-type conveying pipe 2 are interconnected. When the slurry is conveyed by the slurry conveying pipe assembly, the slurry can flow through the first-type conveying pipe 1 and the second-type conveying pipe 2. In a specific implementation, the second-type conveying pipe 2 should also provide at least one detection reference plane 4. It should be noted that the detection reference plane 4 specifically refers to a flat surface. The detection reference plane 4 can be the inner or outer surface of the second-type conveying pipe 2. In addition, the detection reference plane 4 can also be located within the wall of the second-type conveying pipe 2. Preferably, the corresponding outer surface of the second-type conveying pipe 2 is configured as the detection reference plane 4. When the corresponding outer surface of the second-type conveying pipe 2 is configured as the detection reference plane 4, a coupling material, such as a liquid medium or an acoustically conductive rubber pad, is required between the detection reference plane 4 and the ultrasonic probe assembly. The specific type of the material can be selected as needed to ensure that the ultrasonic probe assembly can perform ultrasonic detection of the slurry in the second-type conveying pipe 2.

[0078] Figure 1 FIG. 2 shows an embodiment in which the second type of conveying pipe 2 provides two detection reference planes 4 at the same time. Figure 1In the figure, the detection reference plane 4 is the outer surface of the second type of conveying pipe 2; the two detection reference planes 4 are parallel and corresponding to each other. Optionally, the two detection reference planes 4 are distributed in a positive corresponding state on the second type of conveying pipe 2.

[0079] In order to perform ultrasonic scanning on the slurry, an ultrasonic probe assembly is required. The ultrasonic probe assembly includes at least one set of ultrasonic probe array elements, which should be mounted on the detection reference plane 4. If the second-type conveying pipe 2 only provides one detection reference plane 4, the ultrasonic probe assembly may contain only one set of ultrasonic probe array elements. In this case, the ultrasonic probe array elements are mounted on the detection reference plane 4. If the second-type conveying pipe 2 provides two detection reference planes 4, the ultrasonic probe assembly may contain one or two sets of ultrasonic probe array elements. If the ultrasonic probe assembly contains only one set of ultrasonic probe array elements, the ultrasonic probe array elements can be mounted on any detection reference plane 4. If the ultrasonic probe assembly contains two sets of ultrasonic probe array elements, one set of ultrasonic probe array elements is mounted on each detection reference plane 4.

[0080] It is understood that the number of ultrasonic probe array elements within the ultrasonic probe assembly should not exceed the number of detection reference planes 4 provided by the second-class delivery pipe 2, thereby reducing the cost of slurry ultrasonic inspection. When the detection reference plane 4 is the outer surface of the second-class delivery pipe 2, the ultrasonic probe array elements can be more easily installed and removed, further reducing assembly and ultrasonic inspection scanning costs. Furthermore, slurry corrosion and contamination of the ultrasonic probe array elements can be reduced or avoided.

[0081] In specific implementation, when the second-type conveying pipe 2 provides two detection reference planes 4 and a group of ultrasonic probe array elements are installed on each detection reference plane 4, the two groups of ultrasonic probe array elements are distributed correspondingly. Preferably, the two groups of ultrasonic probe array elements are distributed in positive correspondence. When performing ultrasonic scanning, the two relatively arranged groups of ultrasonic probe array elements can be one group of ultrasonic probe array elements emitting ultrasonic signals and the other group of ultrasonic probe array elements receiving ultrasonic signals, or both groups of ultrasonic probe array elements emit and receive ultrasonic signals. The specific selection can be based on actual needs, so as to meet the requirements of ultrasonic scanning detection of slurry.

[0082] Generally, a group of ultrasound probe array elements includes at least one ultrasound probe array element linear array, wherein the number of probe array elements 5 in each ultrasound probe array element linear array is consistent, and can be n, where n is an integer ≥ 2; Figure 1FIG2 shows an embodiment in which the ultrasonic probe array element group includes three ultrasonic probe array element linear arrays, each of which has 11 probe array elements 5. Of course, the number of ultrasonic probe array element linear arrays and the number of probe array elements 5 in each ultrasonic probe array element linear array can be selected according to the actual ultrasonic scanning detection requirements of the slurry, so as to meet the detection requirements and accuracy as much as possible while avoiding investment in too many probe array elements 5, thereby achieving the best balance between cost and benefit. They will not be listed here one by one.

[0083] In specific implementation, the arrangement direction of the n probe array elements 5 should preferably be perpendicular to the direction of the slurry flowing in the second type of conveying pipe 2, such as Figure 1 In the embodiment, the direction of the slurry transport flow in the second type of transport pipe 2 should be along the length / axis direction of the second type of transport pipe 2 . Therefore, the arrangement direction of the n probe array elements 5 is perpendicular to the length / axis direction of the second type of transport pipe 2 .

[0084] In one embodiment of the present invention, in the second type of transport tube 2, the lumen corresponding to the detection reference plane 4 is configured as an ultrasonic scanning detection lumen, wherein:

[0085] The cross-sectional shape of the ultrasonic scanning detection cavity is different from the cross-sectional shape of the first type of conveying pipe. The cross-sectional shape of the slurry flowing through the ultrasonic scanning detection cavity is a rectangle, and the two sides of the rectangle are a and b, respectively, where a≤b;

[0086] For the n probe array elements 5 in the same ultrasonic probe array element linear array, the arrangement direction of the n probe array elements 5 is consistent with the length direction of the side length of length b.

[0087] As can be seen from the above description, the second-type conveying pipe 2 should be a hollow tubular structure to meet the needs of slurry transportation. In this case, the tube cavity corresponding to the detection reference plane 4 can be configured as an ultrasonic scanning detection cavity. When the ultrasonic probe array element group is installed on the detection reference plane 4, the ultrasonic probe array element group should correspond to the ultrasonic scanning detection cavity, that is, the position of the ultrasonic probe array element group should be within the spatial range of the ultrasonic scanning detection cavity. In specific implementation, the cross-section of the ultrasonic scanning detection cavity is different from the cross-section of the first-type conveying pipe 1. The cross-section of the ultrasonic scanning detection cavity is preferably rectangular, and the two sides of the rectangular cross-section are a and b respectively; in addition, when the inner cavity cross-section of the first-type conveying pipe is circular with a diameter of R, the a <R。

[0088] It should be noted that when the cross-section of the first type of conveying pipe 1 is circular, that is, the first type of conveying pipe 1 is the commonly used circular conveying pipe in the prior art. At this time, when being compatible with the prior art for slurry conveying, the detection reference plane 4 on the second type of conveying pipe 2 can facilitate the installation and disassembly of the ultrasonic probe assembly, facilitate daily maintenance, and reduce the cost of ultrasonic scanning detection. In addition, after the ultrasonic probe assembly is assembled on the detection reference plane 4, since the n probe elements 5 in the same ultrasonic probe element linear array are arranged on the detection reference plane 4 in sequence, it can ensure that the ultrasonic probe assembly can perform ultrasonic scanning more accurately, thereby improving the accuracy and efficiency of ultrasonic scanning detection.

[0089] In an embodiment of the present invention, the second type of conveying pipe 2 is connected to the corresponding first type of conveying pipe 1 through a conveying conversion pipe 3, where

[0090] when conveying the slurry, the cross-sectional areas of the slurry flowing through the first type of conveying pipe 1, the conveying conversion pipe 3, and the second type of conveying pipe 2 are equal.

[0091] Specifically, since the cross-sectional shape of the inner cavity of the first type of conveying pipe 1 is different from the cross-sectional shape of the ultrasonic scanning detection cavity, therefore, the second type of conveying pipe 2 should be connected to the first type of conveying pipe 1 through the conveying conversion pipe 3, as Figure 1 shown. Figure 1 In it, both ends of the second type of conveying pipe 2 are respectively connected to the corresponding first type of conveying pipe 1 through a conveying conversion pipe 3. When the cross-sectional areas of the first type of conveying pipe 1, the conveying conversion pipe 3, and the ultrasonic scanning detection cavity are equal, no matter which shape of the pipe the slurry flows through, its flow cross-sectional area remains consistent, thus ensuring the stability and consistency of the slurry flow rate, and helping to improve the accuracy of ultrasonic detection. In specific implementation, the first type of conveying pipe 1, the conveying pipe conversion 3, and the second type of conveying pipe 2 can be integrally formed, or fixedly connected or detachably connected.

[0092] In specific implementation, the configured dimension is a < R < b. At this time, one side length a of the cross-section of the slurry flowing through the second type of conveying pipe 2 < the inner diameter R of the first type of conveying pipe 1 < the other side length b of the cross-section of the slurry flowing through the second type of conveying pipe 2. The ultrasonic probe assembly is assembled on the second type of conveying pipe 2. The distance between the opposite ultrasonic probe element groups of the present invention is a, reducing the distance between the opposite ultrasonic probe element groups. Compared with the ultrasonic scanning when using a circular conveying pipe with a larger diameter to convey slurry in the prior art, it is beneficial to weaken the ultrasonic energy attenuation phenomenon caused by the large distance between the opposite ultrasonic probes, improve the resolution of the ultrasonic detection image, and can accurately and effectively perform real-time detection and analysis on the quality of the slurry.

[0093] In one embodiment of the present invention, when the slurry to be inspected is transported by the slurry conveying pipe assembly, at least an ultrasonic probe array element group on the detection reference plane 4 is configured to perform ultrasonic scanning on the slurry to be inspected, so as to generate slurry ultrasonic scanning information after ultrasonic scanning detection, and determine the slurry characteristic state of the slurry to be inspected based on the slurry ultrasonic scanning information, wherein:

[0094] The slurry ultrasonic scanning information includes at least one group of ultrasonic scanning signal groups to be detected,

[0095] For each group of ultrasonic scanning signal groups to be detected, the ultrasonic scanning signal group to be detected includes a plurality of ultrasonic scanning signals to be detected, and the ultrasonic scanning signals to be detected are ultrasonic reflection signals to be detected or ultrasonic transmission signals to be detected, wherein,

[0096] When the ultrasonic scanning signal to be detected is an ultrasonic reflection signal to be detected, the ultrasonic scanning signal group to be detected in which the ultrasonic scanning signal to be detected is located forms an ultrasonic reflection signal group to be detected;

[0097] When the ultrasonic scanning signal to be detected is an ultrasonic transmission signal to be detected, the ultrasonic scanning signal group to be detected in which the ultrasonic scanning signal to be detected is located forms an ultrasonic transmission signal group to be detected;

[0098] The slurry characteristic state includes the quality state of the slurry to be inspected and / or the defect detection state in the slurry to be inspected, wherein the quality state of the slurry to be inspected includes one or more of the viscosity of the slurry, the solid content of the slurry, the particle distribution in the slurry and / or the slurry flow rate;

[0099] The defect detection status in the slurry to be inspected includes defect status, defect type and / or defect property information.

[0100] As can be seen from the above description, an ultrasonic probe assembly can be used to perform ultrasonic scanning on the slurry being transported to generate slurry ultrasonic scanning information after the ultrasonic scanning, and the slurry ultrasonic scanning information is used to determine the slurry characteristic state of the slurry to be tested. The slurry ultrasonic scanning information includes at least one group of ultrasonic scanning signal groups to be tested. It should be noted that the ultrasonic scanning signal group to be tested includes a plurality of ultrasonic scanning signals to be tested. The types of ultrasonic scanning signals to be tested in the same ultrasonic signal group to be tested are the same, such as all being ultrasonic reflection signals to be tested or ultrasonic transmission signals to be tested. When the ultrasonic scanning signal to be tested is an ultrasonic reflection signal to be tested, the corresponding ultrasonic scanning signal group to be tested is the ultrasonic reflection signal group to be tested. Similarly, when the ultrasonic scanning signal to be tested is an ultrasonic transmission signal to be tested, the corresponding ultrasonic scanning signal group to be tested is the ultrasonic transmission signal group to be tested.

[0101] Specifically, the slurry characteristic state includes the quality state of the slurry and / or the defect detection state in the slurry, wherein the quality state of the slurry includes one or more of the viscosity of the slurry, the solid content state of the slurry, the particle distribution state in the slurry and / or the slurry flow rate; the viscosity of the slurry, the solid content state of the slurry, the particle distribution state in the slurry, and the slurry flow rate can be analyzed and processed by using existing technical means to analyze and process the slurry ultrasonic scanning information. The specific method and process for obtaining the quality state of the slurry can be consistent with the existing ones and will not be repeated here.

[0102] During specific implementation, the defect detection status in the slurry includes defect status, defect type and / or defect property information, wherein the defect status specifically refers to whether there are defects in the slurry, and the defect type information is the category of the defect. The defect type may include bubbles or agglomerates. Agglomerates are objects formed by the agglomeration of particles in the slurry, and the size of the agglomerates should be larger than the size of normal particles in the slurry.

[0103] In one embodiment of the present invention, a method for determining a defect detection status in a slurry to be inspected based on slurry ultrasonic scanning information includes:

[0104] Extracting a group of ultrasonic scanning signal groups to be detected from the slurry ultrasonic scanning information, and determining a characteristic value of a scan signal of a defect to be detected of any ultrasonic scanning signal to be detected in the group of ultrasonic scanning signal to be detected;

[0105] Based on the characteristic value of the scan signal of the defect to be detected of each ultrasonic scan signal to be detected and the corresponding probe array element 5, a mapping spectrum of the characteristic value of the scan signal of the defect to be detected and the probe array element is constructed;

[0106] The internal defect detection state of the slurry to be inspected is determined based at least on the constructed scanning signal characteristic value of the defect to be inspected-probe array element mapping spectrum, wherein:

[0107] When the defect state is determined to be defects in the slurry to be inspected, the determined defect property information includes the number of defects, the locations of defects and / or the sizes of defects, and the defect types include bubbles and / or agglomerates.

[0108] As can be seen from the above description, the slurry ultrasonic scanning information includes at least one set of ultrasonic scanning signal groups to be detected. When determining the defect detection status in the slurry to be detected, at least one set of ultrasonic scanning signal groups to be detected is used. For each set of ultrasonic scanning signal groups to be detected, it is necessary to determine the characteristic value of the defect scanning signal to be detected for each ultrasonic scanning signal to be detected. Thereafter, a mapping spectrum of the characteristic value of the defect scanning signal to be detected and the probe array element can be constructed. The constructed mapping spectrum of the characteristic value of the defect scanning signal to the probe array element can be in the form of a table or a graph. Figure 2 and Figure 3An embodiment of the mapping spectrum of the characteristic value of the scan signal of the defect to be detected and the probe array element is shown in the form of a spectrum. The method and process of constructing the mapping spectrum of the characteristic value of the scan signal of the defect to be detected and the probe array element can be referred to the following description.

[0109] Figure 2 An embodiment of the mapping spectrum between characteristic value of the scanning signal of the defect to be detected and the probe array element is shown in FIG. Figure 2 In the figure, the horizontal axis is the number of the probe element 5, and the vertical axis is the characteristic value of the scan signal of the defect to be detected. For the mapping spectrum of the characteristic value of the scan signal of the defect to be detected - the probe element, the corresponding scan characteristic values ​​of the defect to be detected can be connected in sequence according to the number sequence of the probe element 5, as shown in the following example: Figure 2 shown.

[0110] As can be seen from the above description, in the mapping spectrum between characteristic values ​​of the scan signal of the defect to be inspected and the probe elements in the form of a spectrum, the probe elements 5 in the linear array of the target ultrasonic probe elements need to be numbered. Specifically, when the probe elements 5 in the linear array of the target ultrasonic probe elements are numbered sequentially, a feasible implementation method is as follows: if the linear array of the target ultrasonic probe elements has n probe elements 5, the n probe elements 5 are numbered sequentially according to their arrangement direction, and the corresponding probe elements 5 can be numbered from 1 to n. Figure 1 In the embodiment shown in FIG. 1 , each row of the ultrasonic probe array element linear array has 11 probe array elements 5 , and the 11 probe array elements may be numbered 1 to 11.

[0111] It should be noted that the intra-slurry defect detection state of the slurry to be inspected can be determined at least based on the constructed defect scanning signal characteristic value-probe array element mapping spectrum; when the defect state of the determined intra-slurry defect detection state is that there are defects in the slurry to be inspected, the defect property information can also be determined. In one embodiment of the present invention, the determined defect property information includes the number of defects, the location of the defects and / or the size of the defects.

[0112] It can be seen from the above description that the ultrasonic scanning signal group to be tested can be an ultrasonic reflection signal group to be tested and / or an ultrasonic transmission signal group to be tested. The following is a specific explanation taking the case where the ultrasonic scanning signal group to be tested is an ultrasonic reflection signal group to be tested and an ultrasonic transmission signal group to be tested as an example.

[0113] In one embodiment of the present invention, generating a group of ultrasonic reflection signals to be detected includes:

[0114] configuring a group of ultrasonic probe array element groups on the detection reference plane 4 as a target ultrasonic probe array element group, and selecting at least one ultrasonic probe array element linear array in the target ultrasonic probe array element group as a target ultrasonic probe array element linear array;

[0115] An ultrasonic signal is transmitted to the slurry to be inspected by using the probe array element 5 in the linear array of target ultrasonic probe array elements, and an ultrasonic reflection signal to be inspected is received by using the probe array element 5 in the linear array of target ultrasonic probe array elements, so as to form an ultrasonic reflection signal group to be inspected based on each received ultrasonic reflection signal to be inspected.

[0116] As can be seen from the above description, the ultrasonic reflection signal group to be detected includes several ultrasonic reflection signals to be detected. In order to form the ultrasonic reflection signal group to be detected, it is necessary to select a target ultrasonic probe array element group and a target ultrasonic probe array element linear array. The target ultrasonic probe array element group is an ultrasonic probe array element group installed on the second-class transport pipe 2. If only one ultrasonic probe array element group is installed on the second-class transport pipe 2, then the ultrasonic probe array element group is the target ultrasonic probe array element group. If two ultrasonic probe array element groups are installed on the second-class transport pipe 2, then one of the ultrasonic probe array element groups is selected as the target probe array element group. After the target ultrasonic probe array element group is selected, an ultrasonic probe array element linear array is selected from the target ultrasonic probe array element linear array as the target ultrasonic probe array element linear array.

[0117] During ultrasonic scanning, probe elements 5 within the target ultrasonic probe element linear array are used to transmit ultrasonic signals toward the slurry to be inspected. Subsequently, probe elements 5 within the target ultrasonic probe element linear array are used to receive the ultrasonic reflection signals to be inspected. Thus, a set of ultrasonic reflection signals to be inspected is formed based on each received ultrasonic reflection signal to be inspected. It will be appreciated that the number of ultrasonic reflection signals to be inspected within a set of ultrasonic reflection signals to be inspected is consistent with the number of probe elements 5 within the target ultrasonic probe element linear array.

[0118] It should be noted that when multiple ultrasonic probe element linear arrays exist within the target ultrasonic probe element group, after selecting the target ultrasonic probe element linear array, an ultrasonic probe element linear array can also be selected as a calibration ultrasonic probe element linear array. During ultrasonic scanning, the calibration ultrasonic probe element linear array can be configured to receive ultrasonic signals, thereby forming a calibration ultrasonic reflection signal group. The calibration ultrasonic reflection signal group can also be used to determine the slurry characteristic state of the slurry to be tested, and the determined slurry characteristic state can be used as the calibration characteristic state, which can be used to verify the slurry characteristic state, thereby improving the precision and accuracy of ultrasonic testing.

[0119] In one embodiment of the present invention, when the ultrasonic scanning signal group to be detected is an ultrasonic reflection signal group to be detected, constructing a mapping spectrum of characteristic values ​​of the defect scanning signal to be detected and probe array elements includes:

[0120] For each ultrasonic reflection signal to be inspected in the ultrasonic reflection signal group to be inspected, the ultrasonic reflection signal to be inspected is compared with a corresponding reference ultrasonic reflection signal to identify and extract a defect ultrasonic reflection signal of the current ultrasonic reflection signal to be inspected, wherein the reference ultrasonic reflection signal is generated by ultrasonically scanning a reference slurry using a linear array of target ultrasonic probe elements, and the reference slurry is a slurry of the same type as the slurry to be inspected and has no defects;

[0121] Based on each defect ultrasonic reflection signal, the corresponding defect reflection signal characteristic value is extracted and generated, and the defect reflection signal characteristic value is used as the defect scanning signal characteristic value;

[0122] The probe elements 5 in the linear array of target ultrasonic probe elements are numbered in sequence, and the probe elements 5 are matched one-to-one with the characteristic values ​​of the reflection signals of the defects to be detected according to the numbering order of the probe elements to construct a mapping spectrum between the characteristic values ​​of the scanning signals of the defects to be detected and the probe elements.

[0123] In specific implementations, when constructing a mapping spectrum between the characteristic value of the scan signal of the defect to be detected and the probe array element, a reference slurry is required. The reference slurry is of the same type as the slurry to be detected and does not contain any defects. The provided reference slurry is then ultrasonically scanned using a linear array of target ultrasonic probe elements to generate a number of reference ultrasonic reflection signals. Therefore, the reference ultrasonic reflection signals should correspond one-to-one with the ultrasonic reflection signals to be detected within the ultrasonic reflection signal group to be detected. Therefore, a single ultrasonic reflection signal to be detected can be compared with its corresponding reference ultrasonic reflection signal. Specifically, the reference ultrasonic reflection signal corresponding to the ultrasonic reflection signal to be detected refers to the ultrasonic reflection signal received by the same probe array element 5.

[0124] Figure 4 An embodiment of a reference ultrasonic reflection signal and an ultrasonic reflection signal to be detected is shown in FIG. Figure 4 In the figure, A is the reference ultrasonic reflection signal, and B is the ultrasonic reflection signal to be detected when there is a defect and the defect is a bubble. When the defect is agglomerate, the corresponding diagram can be referred to Figure 4 No more examples are given here. Figure 4 By comparing the ultrasonic reflection signal to be tested with the reference ultrasonic reflection signal, it is determined that the ultrasonic reflection signal to be tested has at least one additional characteristic peak with an amplitude greater than the amplitude threshold compared to the reference ultrasonic reflection signal. It should be noted that the amplitude mentioned above refers to the amplitude at the maximum point of the reflected signal waveform. Therefore, it is determined that a defective ultrasonic reflection signal exists within the slurry to be tested. In actual operation, the amplitude threshold is usually determined based on the specific situation and is generally not less than 6dB.

[0125] When a defect exists in the slurry, a defect ultrasonic reflection signal can be extracted from the current ultrasonic reflection signal to be detected. The defect ultrasonic reflection signal is the reflection signal caused by the defect. After extracting the characteristic value of the defect reflection signal corresponding to the defect ultrasonic reflection signal, the characteristic value of the defect reflection signal to be detected is used as the characteristic value of the defect scanning signal to be detected.

[0126] Figure 4 In the figure, the characteristic value of the defect reflection signal to be detected is the amplitude of the defect ultrasonic reflection signal. It should be noted that the characteristic value of the defect reflection signal to be detected can be any one of the amplitude of the defect ultrasonic reflection signal, the PPV (Peak-to-Peak Voltage) value of the defect ultrasonic reflection signal, the envelope area of ​​the defect ultrasonic reflection signal, or other characteristic values ​​that can indicate the energy of the defect ultrasonic reflection signal. The amplitude of the defect ultrasonic reflection signal includes the amplitude of the original defect ultrasonic reflection signal and the amplitude of the defect ultrasonic reflection signal after envelope processing. Therefore, according to the type of the selected characteristic value of the defect reflection signal to be detected, the corresponding characteristic value of the defect reflection signal to be detected can be calculated using the technical means commonly used in this technical field.

[0127] The following examples illustrate the specific processing of PPV value calculation and envelope processing.

[0128] Specifically, when calculating the PPV value, the amplitude of the corresponding waveform minimum point is subtracted from the amplitude of the corresponding waveform maximum point of the defect ultrasonic reflection signal. In addition, the envelope processing may include the following steps:

[0129] (1) Using a bandpass filter to remove unnecessary frequency components from the defect ultrasonic reflection signal to obtain a filtered signal;

[0130] (2) Smoothing the filtered signal to reduce random fluctuations and obtain a smoothed signal;

[0131] (3) Performing Hilbert transform on the smoothed signal to obtain a complex signal;

[0132] (4) Calculate the modulus of the complex signal and obtain the envelope curve.

[0133] It is understood that envelope processing can effectively extract the envelope curve of the ultrasonic signal, thereby better analyzing the signal characteristics and improving the signal readability and analysis accuracy. The envelope area can be obtained by integrating the envelope of the envelope curve over time.

[0134] It can be understood that when the ultrasonic reflection signal to be detected is compared with the reference ultrasonic reflection signal, if there is no additional characteristic peak with an amplitude lower than the amplitude threshold value in the ultrasonic reflection signal to be detected relative to the reference ultrasonic reflection signal, it can be considered that there is no defect reflection signal in the current slurry to be detected. At this time, the characteristic value of the corresponding defect ultrasonic reflection signal to be detected can be regarded as 0.

[0135] After comparing and extracting features from each ultrasonic reflection signal to be detected with the corresponding reference ultrasonic reflection signal, the characteristic value of the defect reflection signal to be detected corresponding to each ultrasonic reflection signal to be detected can be obtained. Since each ultrasonic reflection signal to be detected has a one-to-one correspondence with each probe array element 5, after the probe array elements 5 in the linear array of target ultrasonic probe elements are sequentially numbered, the probe array elements 5 can be mapped one-to-one with the characteristic values ​​of the defect reflection signal to be detected according to the numbering order of the probe array elements 5. At the same time, the characteristic values ​​of the defect reflection signal to be detected are used as the characteristic values ​​of the defect scanning signal to be detected. In this way, a mapping spectrum of the characteristic value of the defect scanning signal to the probe array element can be constructed. Specifically, when sequentially numbering the probe array elements 5 in the linear array of target ultrasonic probe elements, reference can be made to the corresponding description above.

[0136] In one embodiment of the present invention, generating a group of ultrasonic transmission signals to be detected includes:

[0137] The second type of delivery pipe 2 includes at least two detection reference planes 4;

[0138] The ultrasonic probe assembly includes at least two groups of ultrasonic probe array elements, wherein the two groups of ultrasonic probe array elements are respectively assembled on two corresponding detection reference planes 4, and the two groups of ultrasonic probe array elements are correspondingly distributed;

[0139] configuring one group of ultrasound probe array element groups as target transmitting ultrasound probe array element groups, and configuring another group of ultrasound probe array element groups as target receiving ultrasound probe array element groups;

[0140] An ultrasonic signal is transmitted to the slurry to be inspected by using a probe element in a linear array of at least one ultrasonic probe element in a target transmitting ultrasonic probe element group, and an ultrasonic transmission signal to be inspected is received by using a probe element in a linear array of at least one ultrasonic probe element in a target receiving ultrasonic probe element group, so as to form an ultrasonic transmission signal group to be inspected based on all received ultrasonic transmission signals to be inspected.

[0141] As can be seen from the above description, the ultrasonic transmission signal group to be detected includes several ultrasonic transmission signals to be detected. In order to obtain the ultrasonic transmission signals to be detected, at least two detection reference planes 4 are configured on the second-type conveying pipe 2. At this time, as can be seen from the above description, the two detection reference planes 4 should be two corresponding planes, and a group of ultrasonic probe array elements are assembled on each detection reference plane 4, wherein the two groups of ultrasonic probe array elements should preferably be distributed in positive correspondence; specifically, the positive corresponding distribution here specifically refers to the linear arrays of ultrasonic probe array elements in the two groups of ultrasonic probe array elements being in a corresponding state.

[0142] After assembling two groups of ultrasonic probe array elements on the second type of conveying pipe 2, one group of ultrasonic probe array elements can be configured as a target transmitting ultrasonic probe array element group, and thereafter, the other group of ultrasonic probe array elements can be configured as a target receiving ultrasonic probe array element group. After selecting the target transmitting ultrasonic probe array element group, a linear array of ultrasonic probe array elements can be selected from the target transmitting ultrasonic probe array element group as a target transmitting ultrasonic probe array element linear array; similarly, after selecting the target receiving ultrasonic probe array element group, a linear array of ultrasonic probe array elements can be selected from the target receiving ultrasonic probe array element group as a target receiving ultrasonic probe array element linear array. It should be noted that the target transmitting ultrasonic probe array element linear array should correspond to the target receiving ultrasonic probe array element linear array, where the correspondence here at least includes corresponding distribution positions.

[0143] During ultrasonic scanning, a linear array of target transmitting ultrasonic probe elements is used to transmit ultrasonic signals to the slurry to be inspected, and a linear array of target receiving ultrasonic probe elements is used to receive the ultrasonic signals passing through the slurry to be inspected to form an ultrasonic transmission signal to be inspected. Thereafter, an ultrasonic transmission signal group to be inspected is formed based on all received ultrasonic transmission signals to be inspected.

[0144] In specific implementations, as described above, another linear array of ultrasonic probe elements can be selected from the selected target receiving ultrasonic probe element group as a verification receiving ultrasonic probe element linear array. The ultrasonic transmission signals received by the verification receiving ultrasonic probe element linear array can be used to obtain a verification ultrasonic transmission signal group. After obtaining the verification ultrasonic transmission signal group, the verification ultrasonic transmission signal group can be used to verify the ultrasonic testing results. The specific verification method can be found in the description above and will not be further elaborated here.

[0145] In one embodiment of the present invention, when the ultrasonic scanning signal group to be inspected is an ultrasonic transmission signal group to be inspected, constructing a mapping spectrum of characteristic values ​​of the defect scanning signal to be inspected and probe array elements includes:

[0146] For each ultrasonic transmission signal to be detected in the ultrasonic transmission signal group to be detected, determining a transmission signal characteristic value of a defect to be detected of each ultrasonic transmission signal to be detected, and using the transmission signal characteristic value of the defect to be detected as a scanning signal characteristic value of the defect to be detected;

[0147] The probe array elements 5 of the target receiving ultrasonic probe array element group are numbered in sequence, and the probe array elements 5 are matched one-to-one with the characteristic values ​​of the transmission signal of the defect to be detected according to the numbering sequence of the probe array elements to construct a mapping spectrum of the characteristic value of the scanning signal of the defect to be detected-probe array element, wherein,

[0148] When determining the characteristic value of the transmission signal of the defect to be detected of each ultrasonic transmission signal to be detected, it includes:

[0149] Extracting a characteristic value of a transmission signal to be detected of each ultrasonic transmission signal to be detected;

[0150] Extracting a reference transmission signal characteristic value of a reference slurry transmission signal corresponding to probe array element 5, wherein the reference slurry is a slurry of the same type as the slurry to be inspected and has no defects;

[0151] For each transmission signal characteristic value to be detected, determine the reference transmission signal characteristic value of the reference slurry transmission signal under the probe array element 5 corresponding to the transmission signal characteristic value to be detected, and calculate the corresponding attenuation ratio A based on the reference transmission signal characteristic value determined under the corresponding probe array element 5. s , and the calculated attenuation ratio A s The characteristic value of the transmission signal of the defect to be detected is used as the current ultrasonic transmission signal to be detected.

[0152] Specifically, when the ultrasonic scanning signal group to be inspected is a group of ultrasonic transmission signals to be inspected, constructing a mapping spectrum between the characteristic value of the defect scanning signal to the probe element requires determining the characteristic value of the defect transmission signal to be inspected corresponding to each ultrasonic transmission signal to be inspected. When determining the characteristic value of the defect transmission signal to be inspected, a reference slurry must be provided and the reference transmission signal characteristic value of the reference slurry transmission signal corresponding to probe element 5 must be obtained.

[0153] The reference slurry transmission signal is the ultrasonic transmission signal transmitted through the reference slurry and received by the corresponding probe element 5 of the linear array of target receiving ultrasonic probe elements. The characteristic value of the transmission signal to be tested and the characteristic value of the reference transmission signal should be of the same type, such as the amplitude of the corresponding transmission signal, PPV value, envelope area, or other characteristic value that can indicate the energy of the transmission signal. The amplitude of the transmission signal includes the amplitude of the original transmission signal and the amplitude of the transmission signal after envelope processing.

[0154] Figure 5An embodiment of a reference ultrasonic transmission signal and an ultrasonic transmission signal to be detected is shown in the figure. In the figure, C is the reference ultrasonic transmission signal, and D is an embodiment of the ultrasonic transmission signal to be detected when there is a defect and the defect is a bubble.

[0155] Figure 5 By comparing the ultrasonic transmission signal to be detected with the reference ultrasonic transmission signal, it can be seen that the ultrasonic transmission signal to be detected has obvious signal attenuation compared with the reference ultrasonic transmission signal. Therefore, the transmission signal characteristic value of the defect to be detected of the ultrasonic transmission signal to be detected can be extracted according to the attenuation state of the ultrasonic transmission signal to be detected. When the defect is agglomerate, the corresponding signal attenuation of the ultrasonic transmission signal to be detected can be referred to Figure 5 The signal attenuation is not given here.

[0156] However, it should be noted that due to the different sound velocities of bubbles and agglomerates, the TOF (time of flight, TOF) value of the corresponding ultrasonic transmission signal to be detected will be different when the defect is a bubble than when the defect is an agglomerate. The TOF value in the present invention refers to the time elapsed from the transmission signal's emission to its reception. Specifically, when the defect is a bubble, the TOF value of the ultrasonic transmission signal to be detected is greater than the TOF value of the reference ultrasonic transmission signal; when the defect is an agglomerate, the TOF value of the ultrasonic transmission signal to be detected is less than the TOF value of the reference ultrasonic transmission signal. Therefore, the defect type can be determined based on the corresponding TOF value. Of course, conventional techniques in the field can also be used to determine whether the defect type is a bubble or an agglomerate. The specific selection can be based on actual needs and will not be further illustrated here.

[0157] After determining the characteristic value of the transmission signal to be detected of each ultrasonic transmission signal to be detected and the characteristic value of the reference transmission signal of the corresponding reference slurry transmission signal, the corresponding attenuation ratio A of the current ultrasonic transmission signal to be detected can be calculated. s , and the calculated attenuation ratio A s As the characteristic value of the transmission signal of the defect to be detected of the current ultrasonic transmission signal to be detected, the attenuation ratio A is calculated. s A feasible way is: s =(I0-I s ) / I0, I0 is the characteristic value of the reference transmission signal, I s is the characteristic value of the transmission signal to be detected. Another feasible method is: A s =10log 10 (I0 / I s ).

[0158] After calculating the transmission signal characteristic value of the defect to be detected for each ultrasonic transmission signal to be detected, the transmission signal characteristic value of the defect to be detected is used as the scanning signal characteristic value of the defect to be detected, and a mapping spectrum of the scanning signal characteristic value of the defect to be detected and the probe array element is constructed based on the scanning signal characteristic value of the defect to be detected. The construction of the mapping spectrum of the scanning signal characteristic value of the defect to be detected and the probe array element from the transmission signal characteristic value of the defect to be detected is consistent with the construction of the mapping spectrum of the scanning signal characteristic value of the defect to be detected and the probe array element from the reflection signal characteristic value of the defect to be detected. For details, please refer to the above description.

[0159] It should be noted that after constructing the characteristic value of the scanning signal of the defect to be detected-probe array element mapping spectrum, the intra-slurry defect detection status of the slurry to be detected can be determined based on the characteristic value of the scanning signal of the defect to be detected-probe array element mapping spectrum. To determine the intra-slurry defect detection status of the slurry to be detected, please refer to the corresponding instructions below.

[0160] In one embodiment of the present invention, when there is at least one characteristic value of the scan signal of the defect to be detected that meets the defect judgment threshold in the mapping spectrum of the characteristic value of the scan signal of the defect to be detected and the probe array element, it is determined that the defect state is a defect in the slurry to be detected;

[0161] When the defect state is determined to be a defect in the slurry to be detected, and corresponding characteristic values ​​of the scanning signal of the defect to be detected exist for any number of consecutively numbered probe array elements 5, the area enclosed by the plurality of characteristic values ​​of the scanning signal of the defect to be detected and the corresponding numbers of the probe array elements 5 is recorded as Q1;

[0162] When the defect state is determined to be a defect in the slurry to be detected, the defect property information of the slurry to be detected is determined based on at least the corresponding included area Q1 in the mapping spectrum of the characteristic value of the scanning signal of the defect to be detected and the probe array element.

[0163] From the above description, it can be seen that since the characteristic value of the reflection signal of the defect to be detected and the characteristic value of the transmission signal of the defect to be detected can both be used as the characteristic value of the scanning signal of the defect to be detected, and the corresponding characteristic value of the scanning signal of the defect to be detected-probe array element mapping spectrum can be constructed, the same method can be used to determine the defect detection status in the slurry to be detected; among them, when there is at least one characteristic value of the scanning signal of the defect to be detected that meets the defect judgment threshold, it can be considered that there is a defect in the slurry to be detected. At this time, the defect status is that there is a defect in the slurry to be detected.

[0164] In specific implementation, according to the description of the characteristic value of the scan signal of the defect to be detected, it can be known that when the error is ignored, the defect judgment threshold can be 0. When the defect judgment threshold is 0, that is, when at least one characteristic value of the scan signal of the defect to be detected is not 0, it can be regarded as a defect in the slurry to be detected. Figure 2 and Figure 3In the example, when the ordinate value corresponding to the intersection of the ordinate and the abscissa is 0, it can be used as the corresponding embodiment when the defect judgment threshold is 0. Of course, the defect judgment threshold can also be selected as other values ​​according to actual conditions. After the defect judgment threshold is selected, it can be judged whether there are defects in the slurry to be inspected.

[0165] When it is determined that there is a defect, if corresponding characteristic values ​​of the scanning signal of the defect to be detected exist for any number of consecutively numbered probe array elements 5, the area enclosed by multiple consecutively numbered characteristic values ​​of the scanning signal of the defect to be detected and the corresponding probe array element 5 numbers is recorded as Q1; generally, corresponding characteristic values ​​of the scanning signal of the defect to be detected exist for at least two consecutively numbered probe array elements 5. Here, the existence of corresponding characteristic values ​​of the scanning signal of the defect to be detected specifically means that all characteristic values ​​of the scanning signal of the defect to be detected in the area Q1 are not 0.

[0166] After counting area Q1 in the above method, the defect characteristic information of the slurry to be detected can be determined based on the characteristic value of the defect scanning signal to be detected - the probe array element mapping spectrum corresponding to the area Q1. The method of determining the defect characteristic information of the slurry to be detected is specifically described below.

[0167] In one embodiment of the present invention, a method for determining the number of defects in a slurry to be inspected includes:

[0168] The number of regions Q1 corresponding to the characteristic value of the scanning signal of the defect to be detected and the probe array element mapping spectrum is counted, and the counted number of regions Q1 is used as the number of defects.

[0169] Specifically, for the ultrasonic reflection signal group to be inspected or the ultrasonic transmission signal group to be inspected, the characteristic value of the defect scanning signal to be inspected-the number of corresponding included areas Q1 in the probe array element mapping spectrum can be obtained, and the number of corresponding included areas Q1 can be used as the corresponding defect number.

[0170] In one embodiment of the present invention, a method for determining a defect location in a slurry to be inspected includes:

[0171] For each region Q1, determine the maximum value of the characteristic value of the scan signal of the defect to be detected corresponding to the region Q1, and based on the determined maximum value of the characteristic value of the scan signal of the defect to be detected, determine the probe array element 5 corresponding to the maximum characteristic value of the scan signal of the defect to be detected and the number of the probe array element 5;

[0172] Based on the numbers of the probe array elements 5 and the distribution positions of the probe array elements 5 , the position of the current defect in the slurry to be inspected is estimated.

[0173] As can be seen from the above description, each region Q1 can be considered to contain a defect. When determining the defect location, the maximum value of the scan signal characteristic value corresponding to the defect to be detected in region Q1 can be extracted, as well as the number of the probe element 5 corresponding to the maximum scan signal characteristic value of the defect to be detected. Subsequently, the location of the defect within the slurry can be determined based on the number and distribution of the probe elements 5. It should be noted that the location of the defect in this invention refers to the location of the defect center point.

[0174] In one embodiment of the present invention, a method for determining the size of a defect in a slurry includes:

[0175] Constructing a reference defect scanning signal characteristic value-probe array element mapping spectrum group, wherein the reference defect scanning signal characteristic value-probe array element mapping spectrum group includes a plurality of reference defect scanning signal characteristic value-probe array element mapping spectra, wherein constructing the reference defect scanning signal characteristic value-probe array element mapping spectrum group includes:

[0176] Prepare a reference slurry group, and perform ultrasonic scanning on each reference slurry in the reference slurry group based on an ultrasonic probe assembly to generate a corresponding reference ultrasonic scanning signal group, wherein the reference slurry is of the same type as the slurry to be inspected and contains a known defect size;

[0177] Determining a reference defect scanning signal characteristic value of each reference ultrasonic scanning signal in each reference ultrasonic scanning signal group, constructing a reference defect scanning signal characteristic value-probe array element mapping spectrum, and forming a reference defect scanning signal characteristic value-probe array element mapping spectrum group based on all constructed reference defect scanning signal characteristic value-probe array element mapping spectra;

[0178] Based on each reference defect scanning signal characteristic value-probe array element mapping spectrum, determining the region Q2 corresponding to the current reference defect scanning signal characteristic value-probe array element mapping spectrum, and generating a corresponding reference defect region feature based on region Q2;

[0179] Generate a defect size reference defect area feature set based on the reference defect area features of all reference slurries and their corresponding reference defect sizes;

[0180] For each region Q1, determine the defect region feature to be detected corresponding to the region Q1, and search for a reference defect region feature corresponding to the defect region feature to be detected in a defect size reference defect region feature set;

[0181] Determine the reference defect size corresponding to the searched reference defect region feature, and estimate the defect size corresponding to the current region Q1.

[0182] It should be noted that, depending on the type of ultrasonic scanning test performed on the slurry to be tested, it is necessary to construct a reference ultrasonic reflection signal group and a reference ultrasonic transmission signal group for the reference slurry, and to construct a corresponding reference defect scanning signal characteristic value-probe array element mapping spectrum. It is understandable that when constructing the reference defect scanning signal characteristic value-probe array element mapping spectrum, the above-mentioned slurry to be tested should be replaced with a reference slurry. The reference slurry is a slurry with known defects, such as the size of each defect. Preferably, each reference slurry has only one size of defect. Defects can be prepared in the reference slurry using commonly used technical means in this technical field, and then the reference defect scanning signal characteristic value-probe array element mapping spectrum is constructed using the above-mentioned method. In specific implementation, the reference defect scanning signal characteristic value used when constructing the reference defect scanning signal characteristic value-probe array element mapping spectrum can be specifically referred to the corresponding description and will not be repeated here.

[0183] When different reference slurries are used, different reference defect scanning signal characteristic values-probe array element mapping spectra can be generated; through multiple reference defect scanning signal characteristic values-probe array element mapping spectra, a reference defect scanning signal characteristic value-probe array element mapping spectrum group can be generated, among which, the situation of the reference defect scanning signal characteristic value can refer to the description of the above-mentioned characteristic value of the defect scanning signal to be tested, that is, the situation of the reference defect scanning signal characteristic value should be related to the type of ultrasonic scanning detection of the reference slurry.

[0184] Figure 3 An embodiment of a mapping spectrum of multiple reference defect scanning signal characteristic values ​​to probe array elements is shown. Figure 3 In , for defects of different sizes, the corresponding reference defect transmission signal characteristic values ​​can be obtained. The horizontal axis is the number of the probe array element 5, and the vertical axis is the reference defect scanning signal characteristic value. Specifically, Figure 3 The reference defect scanning signal characteristic value-probe array element mapping spectrum of reference slurries with four different known defects is shown.

[0185] According to the reference defect scanning signal characteristic value-probe array element mapping spectrum of the reference slurry with different known defects, the region Q2 of the different reference slurries and the reference defect region characteristics corresponding to the region Q2 can be obtained.

[0186] During specific implementation, based on the situation corresponding to area Q1, the area Q2 corresponding to the reference defect scanning signal characteristic value-probe array element mapping spectrum can be determined. For example, when the characteristic value of the defect scanning signal to be inspected-probe array element mapping spectrum is constructed based on the ultrasonic reflection signal group to be inspected, and the corresponding area Q1 is obtained, the same method should be used to obtain area Q2, that is, the reference defect scanning signal characteristic value-probe array element mapping spectrum should be constructed based on the reference ultrasonic reflection signal group, and then area Q2 can be obtained. Other situations can be referred to the description here, and they will not be listed one by one here.

[0187] Specifically, for each region Q1, the corresponding defect region feature is determined. The defect region feature can be the area of ​​region Q1 or the cumulative sum of the defect scanning signal characteristic values. If the defect region feature is the area of ​​region Q1, it should be the area enclosed by the corresponding defect scanning signal characteristic value and the horizontal coordinate. After determining the defect region feature corresponding to region Q1, the same method can be used to determine the corresponding reference defect region feature for region Q2.

[0188] For the defect area characteristics to be inspected in each area Q1, the corresponding reference defect area characteristics are searched in the defect size reference defect area characteristic set. The searched reference defect area characteristics should be consistent with the defect area characteristics to be inspected, or have the smallest deviation from the defect area characteristics to be inspected. At this time, the defect corresponding to the defect area characteristics to be inspected obtained by the search can be used as a reference defect.

[0189] As can be seen from the above description, the size of the reference defect is known. Therefore, once the reference defect is determined, the size of the reference defect can be determined. Subsequently, the defect size corresponding to the current region Q1 can be estimated based on the reference defect size. If the characteristics of the reference defect region are consistent with those of the defect region to be inspected, the reference defect size can be directly used as the defect size corresponding to region Q1. If there is a deviation between the characteristics of the reference defect region and the defect region to be inspected, a size range centered on the current reference defect size can be determined based on the direction of the deviation to estimate the defect size corresponding to region Q1.

[0190] It is understandable that in order to improve the estimation accuracy of the defect size corresponding to region Q1, it is necessary to provide as many reference slurries and corresponding reference defects as possible. When determining the defect distribution information above, it is applicable to the case where the defects are bubbles or agglomerates.

Claims

1. A slurry ultrasonic detection system, characterized in that: The slurry ultrasonic detection system includes: A slurry conveying pipe assembly, comprising at least a first type of conveying pipe and a second type of conveying pipe for conveying slurry, wherein the first type of conveying pipe and the second type of conveying pipe are in communication with each other, wherein the second type of conveying pipe comprises at least one detection reference plane; An ultrasonic probe assembly, comprising at least one ultrasonic probe array element group mounted on a detection reference plane, wherein the ultrasonic probe array element group comprises at least one ultrasonic probe array element linear array, and the number of probe array elements in any ultrasonic probe array element linear array is n, where n is an integer ≥ 2; For n probe array elements within the same ultrasonic probe array element linear array, the arrangement direction of the n probe array elements is perpendicular to the conveying flow direction of the slurry flowing through the detection reference plane; When the slurry to be inspected is transported by the slurry transport pipe assembly, at least an ultrasonic probe array element group on the detection reference plane is configured to perform ultrasonic scanning on the slurry to be inspected, so as to generate slurry ultrasonic scanning information after ultrasonic scanning detection, and determine the slurry characteristic state of the slurry to be inspected based on the slurry ultrasonic scanning information, wherein, The slurry ultrasonic scanning information includes at least one group of ultrasonic scanning signal groups to be detected, For each group of ultrasonic scanning signal groups to be detected, the ultrasonic scanning signal group to be detected includes a plurality of ultrasonic scanning signals to be detected, and the ultrasonic scanning signals to be detected are ultrasonic reflection signals to be detected or ultrasonic transmission signals to be detected, wherein, When the ultrasonic scanning signal to be detected is an ultrasonic reflection signal to be detected, the ultrasonic scanning signal group to be detected in which the ultrasonic scanning signal to be detected is located forms an ultrasonic reflection signal group to be detected; When the ultrasonic scanning signal to be detected is an ultrasonic transmission signal to be detected, the ultrasonic scanning signal group to be detected in which the ultrasonic scanning signal to be detected is located forms an ultrasonic transmission signal group to be detected; The slurry characteristic state includes the quality state of the slurry to be inspected and / or the defect detection state in the slurry to be inspected, wherein the quality state of the slurry to be inspected includes one or more of the viscosity of the slurry, the solid content of the slurry, the particle distribution in the slurry and / or the slurry flow rate; The defect detection status in the slurry to be inspected includes defect status, defect type and / or defect property information; The method for determining the defect detection status of the slurry to be inspected based on the slurry ultrasonic scanning information includes: Extracting a group of ultrasonic scanning signal groups to be detected from the slurry ultrasonic scanning information, and determining a characteristic value of a scan signal of a defect to be detected of any ultrasonic scanning signal to be detected in the group of ultrasonic scanning signal to be detected; Based on the characteristic value of the scan signal of the defect to be detected of each ultrasonic scan signal to be detected and the corresponding probe array element, a mapping spectrum of the characteristic value of the scan signal of the defect to be detected and the probe array element is constructed; The internal defect detection state of the slurry to be inspected is determined based at least on the constructed scanning signal characteristic value of the defect to be inspected-probe array element mapping spectrum, wherein: When the defect state is determined to be defects in the slurry to be inspected, the determined defect property information includes the number of defects, the locations of defects and / or the sizes of defects, and the defect types include bubbles and / or agglomerates.

2. The slurry ultrasonic detection system according to claim 1, characterized in that: In the second type of transport tube, the lumen corresponding to the detection reference plane is configured as an ultrasonic scanning detection lumen, wherein: The cross-sectional shape of the ultrasonic scanning detection cavity is different from the cross-sectional shape of the first type of conveying pipe. The cross-sectional shape of the slurry flowing through the ultrasonic scanning detection cavity is a rectangle, and the two sides of the rectangle are a and b, respectively, where a≤b; For n probe array elements in the same ultrasonic probe array element linear array, the arrangement direction of the n probe array elements is consistent with the length direction of the side length of the length b.

3. The slurry ultrasonic detection system according to claim 2, characterized in that: When the inner cross section of the first type of delivery tube is circular and has a diameter of R, the a <R。 4. The slurry ultrasonic detection system according to claim 1, characterized in that: The second type of delivery pipe is connected to the corresponding first type of delivery pipe through the delivery conversion pipe, wherein, When the slurry is transported, the cross-sectional areas of the slurry flowing through the first type of transport pipe, the transport conversion pipe and the second type of transport pipe are equal.

5. The slurry ultrasonic detection system according to claim 1, characterized in that: When generating a group of ultrasonic reflection signals to be detected, it includes: configuring a group of ultrasonic probe array element groups on the detection reference plane as a target ultrasonic probe array element group, and selecting at least one ultrasonic probe array element linear array in the target ultrasonic probe array element group as a target ultrasonic probe array element linear array; Ultrasonic signals are transmitted to the slurry to be inspected by using probe array elements in the linear array of target ultrasonic probe array elements, and ultrasonic reflection signals to be inspected are received by using probe array elements in the linear array of target ultrasonic probe array elements, so as to form an ultrasonic reflection signal group to be inspected based on each received ultrasonic reflection signal to be inspected.

6. The slurry ultrasonic detection system according to claim 1, characterized in that: When generating a group of ultrasonic transmission signals to be detected, it includes: The second type of delivery pipe includes at least two detection reference planes; The ultrasonic probe assembly includes at least two groups of ultrasonic probe array elements, wherein the two groups of ultrasonic probe array elements are respectively assembled on two corresponding detection reference planes, and the two groups of ultrasonic probe array elements are correspondingly distributed; configuring one group of ultrasound probe array elements as target transmitting ultrasound probe array elements and configuring another group of ultrasound probe array elements as target receiving ultrasound probe array elements; An ultrasonic signal is transmitted to the slurry to be inspected by using a probe element in a linear array of at least one ultrasonic probe element in a target transmitting ultrasonic probe element group, and an ultrasonic transmission signal to be inspected is received by using a probe element in a linear array of at least one ultrasonic probe element in a target receiving ultrasonic probe element group, so as to form an ultrasonic transmission signal group to be inspected based on all received ultrasonic transmission signals to be inspected.

7. The slurry ultrasonic detection system according to claim 1, characterized in that: When the ultrasonic scanning signal group to be inspected is an ultrasonic reflection signal group to be inspected, constructing a mapping spectrum of characteristic values ​​of the defect scanning signal to be inspected and probe array elements includes: For each ultrasonic reflection signal to be inspected in the ultrasonic reflection signal group to be inspected, the ultrasonic reflection signal to be inspected is compared with a corresponding reference ultrasonic reflection signal to identify and extract a defect ultrasonic reflection signal of the current ultrasonic reflection signal to be inspected, wherein the reference ultrasonic reflection signal is generated by ultrasonically scanning a reference slurry using a linear array of target ultrasonic probe elements, and the reference slurry is a slurry of the same type as the slurry to be inspected and has no defects; Based on the ultrasonic reflection signal of each defect, the corresponding characteristic value of the reflection signal of the defect to be detected is extracted and generated, and the characteristic value of the reflection signal of the defect to be detected is used as the characteristic value of the scanning signal of the defect to be detected; The probe elements in the linear array of target ultrasonic probe elements are numbered in sequence, and the probe elements are mapped one-to-one with the characteristic values ​​of the reflection signal of the defect to be detected according to the numbering order of the probe elements to construct a mapping spectrum between the characteristic value of the scanning signal of the defect to be detected and the probe element.

8. The slurry ultrasonic detection system according to claim 1, characterized in that: When the ultrasonic scanning signal group to be inspected is an ultrasonic transmission signal group to be inspected, constructing a mapping spectrum of characteristic values ​​of the defect scanning signal to be inspected and probe array elements includes: For each ultrasonic transmission signal to be detected in the ultrasonic transmission signal group to be detected, determining a transmission signal characteristic value of a defect to be detected of each ultrasonic transmission signal to be detected, and using the transmission signal characteristic value of the defect to be detected as a scanning signal characteristic value of the defect to be detected; The probe array elements of the target receiving ultrasonic probe array element group are numbered in sequence, and the probe array elements are mapped one by one to the characteristic values ​​of the transmission signal of the defect to be detected according to the numbering sequence of the probe array elements to construct a mapping spectrum of the characteristic value of the scanning signal of the defect to be detected-probe array element, wherein, When determining the characteristic value of the transmission signal of the defect to be detected of each ultrasonic transmission signal to be detected, it includes: Extracting a characteristic value of a transmission signal to be detected of each ultrasonic transmission signal to be detected; Extracting a reference transmission signal characteristic value of a reference slurry transmission signal corresponding to the probe array element, wherein the reference slurry is a slurry of the same type as the slurry to be inspected and has no defects; For each transmission signal characteristic value to be detected, determine the reference transmission signal characteristic value of the reference slurry transmission signal under the probe array element corresponding to the transmission signal characteristic value to be detected, and calculate the corresponding attenuation ratio A based on the reference transmission signal characteristic value determined under the corresponding probe array element. s , and the calculated attenuation ratio A s The characteristic value of the transmission signal of the defect to be detected is used as the current ultrasonic transmission signal to be detected.

9. The slurry ultrasonic detection system according to claim 7 or 8, characterized in that In the mapping spectrum of the scanning signal characteristic value of the defect to be detected and the probe array element, when there is at least one scanning signal characteristic value of the defect to be detected that meets the defect judgment threshold, it is determined that the defect state is a defect in the slurry to be detected; When the defect state is determined to be a defect in the slurry to be detected, and corresponding characteristic values ​​of the scanning signal of the defect to be detected exist for any number of consecutively numbered probe array elements, the area enclosed by the plurality of characteristic values ​​of the scanning signal of the defect to be detected and the corresponding probe array element numbers is recorded as Q1; When the defect state is determined to be defective, the defect property information of the slurry to be inspected is determined based on at least the corresponding included area Q1 in the mapping spectrum of the characteristic value of the defect scanning signal to be inspected and the probe array element.

10. The slurry ultrasonic detection system according to claim 9, characterized in that: Methods for determining the number of defects in the slurry to be inspected include: The number of regions Q1 corresponding to the characteristic value of the scanning signal of the defect to be detected and the probe array element mapping spectrum is counted, and the counted number of regions Q1 is used as the number of defects.

11. The slurry ultrasonic detection system according to claim 9, characterized in that: Methods for determining the location of defects in the slurry to be inspected include: For each region Q1, determine the maximum value of the characteristic value of the scan signal of the defect to be detected corresponding to the region Q1, and based on the determined maximum value of the characteristic value of the scan signal of the defect to be detected, determine the probe array element corresponding to the maximum characteristic value of the scan signal of the defect to be detected and the number of the probe array element; The position of the current defect in the slurry to be inspected is estimated based on the number of the probe array elements and the distribution positions of the probe array elements.

12. The slurry ultrasonic detection system according to claim 9, characterized in that: Methods for determining the size of defects within slurry include: Constructing a reference defect scanning signal characteristic value-probe array element mapping spectrum group, wherein the reference defect scanning signal characteristic value-probe array element mapping spectrum group includes a plurality of reference defect scanning signal characteristic value-probe array element mapping spectra, wherein constructing the reference defect scanning signal characteristic value-probe array element mapping spectrum group includes: Prepare a reference slurry group, and perform ultrasonic scanning on each reference slurry in the reference slurry group based on an ultrasonic probe assembly to generate a corresponding reference ultrasonic scanning signal group, wherein the reference slurry is of the same type as the slurry to be inspected and contains a known defect size; Determining a reference defect scanning signal characteristic value of each reference ultrasonic scanning signal in each reference ultrasonic scanning signal group, constructing a reference defect scanning signal characteristic value-probe array element mapping spectrum, and forming a reference defect scanning signal characteristic value-probe array element mapping spectrum group based on all constructed reference defect scanning signal characteristic value-probe array element mapping spectra; Based on each reference defect scanning signal characteristic value-probe array element mapping spectrum, determining the region Q2 corresponding to the current reference defect scanning signal characteristic value-probe array element mapping spectrum, and generating a corresponding reference defect region feature based on region Q2; Generate a defect size reference defect area feature set based on the reference defect area features of all reference slurries and their corresponding reference defect sizes; For each region Q1, determine the defect region feature to be detected corresponding to the region Q1, and search for a reference defect region feature corresponding to the defect region feature to be detected in a defect size reference defect region feature set; Determine the reference defect size corresponding to the searched reference defect region feature, and estimate the defect size corresponding to the current region Q1.

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