Slurry ultrasonic detection system

Abstract

The present invention relates to a slurry ultrasonic detection system, which comprises: a slurry conveying pipe assembly, which at least comprises a first type conveying pipe and a second type conveying pipe for conveying slurry, the first type conveying pipe and the second type conveying pipe are mutually communicated, and the second type conveying pipe at least comprises a detection reference plane; the ultrasonic probe assembly at least comprises an ultrasonic probe array element group assembled on the detection reference plane, the ultrasonic probe array element group at least comprises an ultrasonic probe array element linear array, the number of probe array elements in any ultrasonic probe array element linear array is n, and n is an integer greater than or equal to 2; for 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 and flowing direction of the slurry flowing through the detection reference plane. According to the invention, the ultrasonic scanning detection of the slurry can be effectively realized, the efficiency of the ultrasonic scanning detection is improved, the resolution of the ultrasonic scanning detection image is high, and the cost of the ultrasonic scanning detection is reduced.

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, the produced slurry is generally transported to a designated workstation through a delivery pipe, which is usually a round pipe. In order to improve the quality of lithium battery production, the slurry in the delivery pipe needs to be monitored. In the prior art, the slurry can be detected by ultrasonic method. During ultrasonic scanning detection, in order to adapt to the delivery pipe, a ring-shaped ultrasonic probe is usually used, and the slurry in the delivery pipe is detected by the ring-shaped ultrasonic probe.

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

[0004] In addition, in order to improve the slurry conveying efficiency, a circular conveying tube with a larger diameter is generally used to convey the slurry. It is understandable that when a circular conveying tube with a larger diameter is used to convey the slurry, the ultrasonic energy will be severely attenuated, resulting in a strong reflection signal in the area near the array element of the ultrasonic probe (near field), a weak reflection signal in the area far from the array element of the ultrasonic probe (far field), and a weak transmission signal of the ultrasonic probe. At this time, the resolution of the ultrasonic scanning detection image will be low, and the quality of the slurry cannot be accurately and effectively detected and analyzed 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, which 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 is provided, and the 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 connected to 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 set of ultrasonic probe array elements mounted on a detection reference plane, wherein the ultrasonic probe array element set 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 the 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 which is 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 where 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 tested and / or the defect detection state in the slurry to be tested, wherein the quality state of the slurry to be tested 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] A group of ultrasonic probe array element groups on the detection reference plane is configured as a target ultrasonic probe array element group, and at least one ultrasonic probe array element linear array is selected in the target ultrasonic probe array element group as the target ultrasonic probe array element linear array;

[0026] An ultrasonic signal is transmitted to the slurry to be inspected by using the probe array elements 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 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 comprises at least two detection reference planes;

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

[0030] 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;

[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 in 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 in the slurry ultrasonic scanning information, and determining a characteristic value of a defect scanning signal to be detected of any ultrasonic scanning signal to be detected in the group of ultrasonic scanning signals 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 defect detection state of the slurry to be inspected is determined based at least on the constructed defect scanning signal characteristic value to be inspected-probe array element mapping spectrum, wherein:

[0036] When the defect state is determined to be the presence of defects in the slurry to be inspected, the determined defect property information includes the number of defects, the location of defects and / or the size of defects, and the defect type includes 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 the characteristic value of the defect scanning signal to be inspected-probe array element 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, extract and generate the corresponding defect reflection signal characteristic value to be detected, and use the defect reflection signal characteristic value to be detected as the defect scanning signal characteristic value to be detected;

[0040] The probe array elements in the linear array of the target ultrasonic probe array elements are numbered in sequence, and the probe array elements are matched one by one with the characteristic values ​​of the reflection signal of the defect to be detected according to the numbering sequence of the probe array elements, so as to construct a mapping spectrum between the characteristic value of the scanning signal of the defect to be detected and the probe array 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 value of the defect scanning signal to be inspected-probe array element 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 matched one by 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, so as 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 transmission signal characteristic value of each ultrasonic transmission signal to be detected;

[0046] Extracting a reference transmission signal characteristic value of a reference slurry transmission signal under a corresponding 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 characteristic value of the current ultrasonic transmission signal to be detected.

[0048] In the mapping spectrum of the characteristic value of the scanning signal of the defect to be detected and the probe array element, 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 is determined that the defect state is that there is a defect in the slurry to be detected;

[0049] When it is determined that the defect state is that there is a defect in the slurry to be detected, and there are corresponding characteristic values ​​of the scanning signal of the defect to be detected 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 detected is determined based on at least the corresponding included area Q1 in the mapping spectrum of the defect scanning signal to be detected 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 scan signal of the defect to be inspected-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 defect scanning signal to be detected corresponding to the region Q1, and based on the determined maximum value of the characteristic value of the defect scanning signal to be detected, determine the probe array element corresponding to the maximum characteristic value of the defect scanning signal to be detected and the number of the probe array element;

[0055] Based on the numbers of the probe array elements and the distribution positions of the probe array elements, the positions of the current defects in the slurry to be inspected are estimated.

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

[0057] A reference defect scanning signal characteristic value-probe array element mapping spectrum group is constructed, 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 when constructing the reference defect scanning signal characteristic value-probe array element mapping spectrum group, it includes:

[0058] A reference slurry group is prepared, and each reference slurry in the reference slurry group is ultrasonically scanned 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] Determine the reference defect scanning signal characteristic value of each reference ultrasonic scanning signal in each reference ultrasonic scanning signal group, construct a reference defect scanning signal characteristic value-probe array element mapping spectrum, and form 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, determine the region Q2 corresponding to the current reference defect scanning signal characteristic value-probe array element mapping spectrum, and generate 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] The reference defect size corresponding to the searched reference defect region feature is determined, and the defect size corresponding to the current region Q1 is estimated.

[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 ultrasonic detection images, and improving the efficiency and accuracy of ultrasonic scanning detection of slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 It 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 It is a schematic diagram of an embodiment of the mapping spectrum of characteristic value of the scanning signal of the defect to be detected and the probe array element of the present invention.

[0067] Figure 3 It 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 It is a 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 It is a 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 pipe, 2 - second type of delivery pipe, 3 - delivery conversion pipe, 4 - detection reference plane, 5 - probe array element. DETAILED DESCRIPTION

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

[0072] In order to effectively realize 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 set of ultrasonic probe array elements mounted on a detection reference plane 4, wherein the ultrasonic probe array element set 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 convey the slurry. Therefore, the slurry ultrasonic detection system of the present invention should be able to convey 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 conveyed by the conveying pipeline, it at least flows through the slurry conveying pipe assembly.

[0077] Figure 1 An embodiment of the slurry delivery pipe assembly of the present invention is shown in the figure, wherein the slurry delivery pipe assembly shall at least include a first type delivery pipe 1 and a second type delivery pipe 2, the first type delivery pipe 1 and the second type delivery pipe 2 are interconnected, and when the slurry is delivered by the slurry delivery pipe assembly, the slurry can flow through the first type delivery pipe 1 and the second type delivery pipe 2. In specific implementation, the second type delivery pipe 2 shall 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 surface or the outer surface of the second type delivery pipe 2, in addition, the detection reference plane 4 can also be located in the pipe wall of the second type delivery pipe 2, preferably the corresponding outer surface of the second type delivery pipe 2 is configured as the detection reference plane 4, when the corresponding outer surface of the second type delivery pipe 2 is configured as the detection reference plane 4, the detection reference plane 4 and the ultrasonic probe assembly need to be filled with coupling materials, such as liquid medium or sound-conducting rubber pads, the specific type of filling can be selected according to needs, so as to meet the ultrasonic probe assembly to perform ultrasonic detection of the slurry in the second type delivery pipe 2.

[0078] Figure 1 FIG. 4 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 on the second type of conveying pipe 2 in a positive corresponding state.

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

[0080] It is understandable that the number of ultrasonic probe array elements in the ultrasonic probe assembly should not exceed the number of detection reference planes 4 provided by the second type of conveying pipe 2, so as to reduce the cost of ultrasonic inspection of slurry. When the detection reference plane 4 is the outer surface of the second type of conveying pipe 2, it is more convenient to install and disassemble the ultrasonic probe array element group, further reducing the assembly and ultrasonic inspection scanning costs, and in addition, it can also reduce or avoid the corrosion and contamination of the ultrasonic probe array element group by the slurry.

[0081] In specific implementation, when the second type of 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 ultrasonic scanning is performed, the two relatively arranged groups of ultrasonic probe array elements can be one group of ultrasonic probe array elements that transmits ultrasonic signals and the other group of ultrasonic probe array elements that receives ultrasonic signals, or both groups of ultrasonic probe array elements that transmit and receive ultrasonic signals. The specific selection can be based on actual needs to meet the requirements of ultrasonic scanning and 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 may be n, where n is an integer ≥ 2; Figure 1, an embodiment is shown 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 investing in too many probe array elements 5, thereby achieving the best balance between cost and benefit, and 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 conveying flow in the second type 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] It can be seen from the above description that the second type of conveying pipe 2 should be a hollow tubular structure to meet the needs of conveying slurry. At this time, 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 where the ultrasonic probe array element group is assembled 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 of conveying pipe 1. The cross-section shape 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 of conveying pipe is circular and has 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 a common circular conveying pipe in the prior art. At this time, under the condition of 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 that 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 pipe the slurry flows through, its flow cross-sectional area remains the same, thereby ensuring the stability and consistency of the slurry flow rate, and contributing to improving 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, fixedly connected, or detachably connected.

[0092] In specific implementation, the configured dimensions are 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, which reduces the distance between the opposite ultrasonic probe element groups. Compared with the ultrasonic scanning during the prior art of using a circular conveying pipe with a larger diameter to convey the slurry, 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 transport 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 where 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 tested and / or the defect detection state in the slurry to be tested, wherein the quality state of the slurry to be tested 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, the ultrasonic probe assembly can be used to perform ultrasonic scanning on the slurry being transported, so as to generate slurry ultrasonic scanning information after 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, and the types of ultrasonic scanning signals to be tested in the same ultrasonic signal group to be tested are the same, such as all 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 the existing technical means on the slurry ultrasonic scanning information, and the specific method and process for obtaining the quality state of the slurry can be consistent with the existing ones, which will not be repeated here.

[0102] In 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, that 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 state 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 in the slurry ultrasonic scanning information, and determining a characteristic value of a defect scanning signal to be detected of any ultrasonic scanning signal to be detected in the group of ultrasonic scanning signals to be detected;

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

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

[0107] When the defect state is determined to be the presence of defects in the slurry to be inspected, the determined defect property information includes the number of defects, the location of defects and / or the size of defects, and the defect type includes bubbles and / or agglomerates.

[0108] As can be seen from the above description, the slurry ultrasonic scanning information includes at least one group of ultrasonic scanning signal groups to be detected. When determining the defect detection state in the slurry to be detected, at least one group of ultrasonic scanning signal groups to be detected is used. For the ultrasonic scanning signal group to be detected, it is necessary to determine the characteristic value of the defect scanning signal to be detected of 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, wherein the constructed mapping spectrum of the characteristic value of the defect scanning signal to be detected and 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 in the form of a spectrum is shown. 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 refer to the following description.

[0109] Figure 2 An embodiment of the mapping spectrum of the 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 array element 5, and the vertical axis is the characteristic value of the scan signal of the defect to be detected. For the characteristic value of the scan signal of the defect to be detected-probe array element mapping spectrum in the form of a spectrum, the corresponding scan characteristic values ​​of the defect signal to be detected can also be connected in sequence according to the number sequence of the probe array element 5, such as Figure 2 shown.

[0110] It can be seen from the above description that in the mapping spectrum of the characteristic value of the scan signal of the defect to be inspected-probe array element in the form of a spectrum, the probe array elements 5 in the linear array of the target ultrasonic probe array element need to be numbered. Specifically, when the probe array elements 5 in the linear array of the target ultrasonic probe array element are numbered sequentially, a feasible implementation method is: if the linear array of the target ultrasonic probe array element has n probe array elements 5, the n probe array elements 5 are numbered sequentially according to the arrangement direction of the n probe array elements 5, and the corresponding probe array 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 1-11.

[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 to be inspected-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 defects and / or the size of 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, when generating a group of ultrasonic reflection signals to be detected, the method includes:

[0114] A group of ultrasonic probe array element groups on the detection reference plane 4 is configured as a target ultrasonic probe array element group, and at least one ultrasonic probe array element linear array is selected in the target ultrasonic probe array element group as the 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 target ultrasonic probe array element linear array, and an ultrasonic reflection signal to be inspected is received by using the probe array element 5 in the target ultrasonic probe array element linear array, so as to form an ultrasonic reflection signal group to be inspected based on each received ultrasonic reflection signal to be inspected.

[0116] It can be seen from the above description that the ultrasonic reflection signal group to be detected includes a number of 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, wherein 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, 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, one of the ultrasonic probe array element groups is selected as the target probe array element group. After selecting the target ultrasonic probe array element group, an ultrasonic probe array element linear array is selected in the target ultrasonic probe array element linear array as the target ultrasonic probe array element linear array.

[0117] When performing ultrasonic scanning, the probe array element 5 in the target ultrasonic probe array element linear array is used to transmit an ultrasonic signal to the slurry to be inspected, and thereafter, the probe array element 5 in the target ultrasonic probe array element linear array is used to receive the ultrasonic reflection signal to be inspected, so that a group of ultrasonic reflection signals to be inspected can be formed based on each received ultrasonic reflection signal to be inspected. It can be understood that the number of ultrasonic reflection signals to be inspected in the group of ultrasonic reflection signals to be inspected is consistent with the number of probe array elements 5 in the target ultrasonic probe array element linear array.

[0118] It should be noted that when there are multiple ultrasonic probe array element linear arrays in the target ultrasonic probe array element group, after selecting the target ultrasonic probe array element linear array, an ultrasonic probe array element linear array can also be selected as a verification ultrasonic probe array element linear array. When performing ultrasonic scanning, the verification ultrasonic probe array element linear array can be configured to receive ultrasonic signals to form a verification ultrasonic reflection signal group. The slurry characteristic state of the slurry to be tested can also be determined by using the verification ultrasonic reflection signal group, and the determined slurry characteristic state is used as the verification characteristic state, which can be used as a verification of the slurry characteristic state, so as to improve the precision and accuracy of ultrasonic detection.

[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 value of the defect scanning signal to be detected-probe array element 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, extract and generate the corresponding defect reflection signal characteristic value to be detected, and use the defect reflection signal characteristic value to be detected as the defect scanning signal characteristic value to be detected;

[0122] The probe array elements 5 in the linear array of the target ultrasonic probe array elements are numbered in sequence, and the probe array elements 5 are matched one by one with the characteristic values ​​of the reflection signal of the defect to be detected according to the numbering sequence of the probe array elements, so as to construct a mapping spectrum of the characteristic value of the scanning signal of the defect to be detected-probe array element.

[0123] In specific implementation, when constructing the characteristic value of the scan signal of the defect to be detected - the probe array element mapping spectrum, it is necessary to provide a reference slurry, which is a slurry of the same type as the slurry to be detected and has no defects inside. The provided reference slurry needs to be ultrasonically scanned by using the linear array of the target ultrasonic probe array element, and a number of reference ultrasonic reflection signals are generated. It can be seen that the reference ultrasonic reflection signal should be one-to-one corresponding to the ultrasonic reflection signal to be detected in the ultrasonic reflection signal group to be detected. Therefore, one ultrasonic reflection signal to be detected can be compared with the corresponding reference ultrasonic reflection signal, wherein the reference ultrasonic reflection signal corresponding to the ultrasonic reflection signal to be detected specifically 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 further examples are given here. Figure 4 By comparing the ultrasonic reflection signal to be tested with the reference ultrasonic reflection signal, it can be seen that the ultrasonic reflection signal to be tested has at least one additional characteristic peak with an amplitude greater than the amplitude threshold relative to the reference ultrasonic reflection signal. It should be noted that the above amplitude refers to the amplitude of the maximum value point of the waveform of the reflection signal; therefore, it can be seen that there is a defective ultrasonic reflection signal in the current slurry to be tested. In actual operation, it is usually necessary to determine the amplitude threshold according to the specific situation, and the above amplitude threshold is generally not less than 6dB.

[0125] When there are defects in the slurry, the defect ultrasonic reflection signal of the current ultrasonic reflection signal to be detected can be extracted, wherein the defect ultrasonic reflection signal is the reflection signal caused by the defect. After the characteristic value of the defect reflection signal to be detected corresponding to the defect ultrasonic reflection signal is extracted, 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, wherein 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 by using the commonly used technical means in this technical field.

[0127] The following is an example to 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 understandable that envelope processing can effectively extract the envelope curve of the ultrasonic signal, thereby better analyzing the signal characteristics and improving the readability and analysis accuracy of the signal. The envelope area can be obtained by integrating the envelope in the envelope curve over time.

[0134] It can be understood that when the ultrasonic reflection signal to be tested 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 tested relative to the reference ultrasonic reflection signal, it can be considered that there is no defect reflection signal in the current slurry to be tested. At this time, the characteristic value of the corresponding defect ultrasonic reflection signal to be tested can be regarded as 0.

[0135] After comparing and extracting the features of 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 the target ultrasonic probe array elements are numbered in sequence, the probe array elements 5 can be matched one-to-one with the characteristic values ​​of the defect reflection signal to be detected according to the numbering sequence of the probe array elements 5, and 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, thereby constructing a mapping spectrum of the defect scanning signal characteristic value to the probe array element; specifically, when the probe array elements 5 in the linear array of the target ultrasonic probe array elements are numbered in sequence, the corresponding description above can be referred to.

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

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

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

[0139] A group of ultrasound probe array element groups are configured as target transmitting ultrasound probe array element groups, and another group of ultrasound probe array element groups are configured 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] It can be seen from the above description that the ultrasonic transmission signal group to be detected includes a number of 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 of transport 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 installed 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 corresponding state of the linear arrays of ultrasonic probe array elements in the two groups of ultrasonic probe array elements.

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

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

[0144] In specific implementation, as described above, another ultrasonic probe array element linear array can be selected from the selected target receiving ultrasonic probe array element group as the verification receiving ultrasonic probe array element linear array, and the verification ultrasonic transmission signal group can be obtained by using the ultrasonic transmission signal received by the verification receiving ultrasonic probe array element linear array. After obtaining the verification ultrasonic transmission signal group, the verification ultrasonic transmission signal group can be used to verify the ultrasonic detection result. The specific verification method can refer to the above description, which will not be repeated here.

[0145] In one embodiment of the present invention, when the ultrasonic scanning signal group to be detected is an ultrasonic transmission signal group to be detected, constructing a mapping spectrum of characteristic value of the defect scanning signal to be detected-probe array element 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 by 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, so as 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 transmission signal characteristic value 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 characteristic value of the current ultrasonic transmission signal to be detected.

[0152] Specifically, when the ultrasonic scanning signal group to be detected is an ultrasonic transmission signal group to be detected, when constructing a mapping spectrum of characteristic value of the defect scanning signal to the probe array element to be detected, it is necessary to determine the characteristic value of the defect transmission signal to be detected corresponding to each ultrasonic transmission signal to be detected. When determining the characteristic value of the defect transmission signal to be detected, it is necessary to provide a reference slurry and obtain the reference transmission signal characteristic value of the reference slurry transmission signal corresponding to the probe array element 5.

[0153] The reference slurry transmission signal is the ultrasonic transmission signal formed by the reference slurry and received by the corresponding probe array element 5 of the linear array of the target receiving ultrasonic probe array element. The characteristic value of the transmission signal to be tested and the characteristic value of the reference transmission signal should be characteristic values ​​of the same type, such as the amplitude of the corresponding transmission signal, PPV value, envelope area or any other characteristic value that can indicate the energy of the transmission signal, wherein 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 tested with the reference ultrasonic transmission signal, it can be seen that the ultrasonic transmission signal to be tested has obvious signal attenuation relative to the reference ultrasonic transmission signal. Therefore, the transmission signal characteristic value of the defect to be tested of the ultrasonic transmission signal to be tested can be extracted according to the attenuation state of the ultrasonic transmission signal to be tested. When the defect is agglomerate, the corresponding signal attenuation of the ultrasonic transmission signal to be tested 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, when the defect is a bubble, the TOF (time of flight, TOF) value of the corresponding ultrasonic transmission signal to be detected is different from that when the defect is an agglomerate. The TOF value in the present invention refers to the time it takes for the transmission signal to be transmitted from emission to 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, the commonly used technical means in this field can also be used to judge whether the defect type is a bubble or an agglomerate. The specific selection can be based on actual needs, and no examples will be given here.

[0157] After determining the characteristic value of the transmission signal to be detected of each ultrasonic transmission signal to be detected and the reference transmission signal characteristic value 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 defect transmission signal to be detected of the current ultrasonic transmission signal to be detected, the attenuation ratio A is calculated. s A feasible method 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 and obtaining the transmission signal characteristic value of the defect to be detected of 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 case where the scanning signal characteristic value of the defect to be detected and the probe array element mapping spectrum are constructed from the transmission signal characteristic value of the defect to be detected is consistent with the case where the scanning signal characteristic value of the defect to be detected and the probe array element mapping spectrum are constructed from the reflection signal characteristic value of the defect to be detected, and the above description can be referred to for details.

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

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

[0161] When it is determined that the defect state is that there is a defect in the slurry to be detected, and there are corresponding characteristic values ​​of the scanning signal of the defect to be detected 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 number of the probe array element 5 is recorded as Q1;

[0162] When it is determined that the defect state is that there is 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 characteristic value of the scanning signal of the defect to be detected-probe array element mapping spectrum.

[0163] It can be seen from the above description 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 state in the slurry to be detected; wherein, 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, and at this time, the defect state is that there is a defect in the slurry to be detected.

[0164] In specific implementation, according to the description of the above-mentioned characteristic value of the defect scanning signal 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 defect scanning signal to be detected is not 0, it can be regarded as a defect in the slurry to be detected. Figure 2 and Figure 3When 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, when corresponding defect scanning signal characteristic values ​​to be detected exist for any number of consecutively numbered probe array elements 5, the area enclosed by multiple consecutively numbered defect scanning signal characteristic values ​​to be detected and the corresponding probe array element 5 numbers is recorded as Q1; generally, at least two consecutively numbered probe array elements 5 have corresponding defect scanning signal characteristic values ​​to be detected, and here, the existence of corresponding defect scanning signal characteristic values ​​to be detected specifically means that all defect scanning signal characteristic values ​​to be detected in area Q1 are not 0.

[0166] After counting area Q1 in the above manner, the defect property information of the slurry to be detected can be determined based on the characteristic value of the defect scanning signal to be detected-the corresponding area Q1 in the probe array element mapping spectrum. The method for determining the defect property 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 scan signal of the defect to be inspected-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 number of corresponding included areas Q1 in the characteristic value of the defect scanning signal to be inspected-probe array element mapping spectrum can be obtained, and the number of corresponding included areas Q1 is 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 defect scanning signal to be detected corresponding to the region Q1, and based on the determined maximum value of the characteristic value of the defect scanning signal to be detected, determine the probe array element 5 corresponding to the maximum characteristic value of the defect scanning signal to be detected and the number of the probe array element 5;

[0172] Based on the number 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 have a defect. When determining the defect position, the maximum value of the characteristic value of the scan signal of the defect to be detected corresponding to the region Q1 and the number of the probe array element 5 corresponding to the maximum characteristic value of the scan signal of the defect to be detected can be extracted. Thereafter, the position of the defect in the slurry can be determined based on the number of the probe array element 5 and the distribution position of the probe array element 5. It should be noted that the position of the defect in the present invention refers to the position of the center point of the defect.

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

[0175] A reference defect scanning signal characteristic value-probe array element mapping spectrum group is constructed, 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 when constructing the reference defect scanning signal characteristic value-probe array element mapping spectrum group, it includes:

[0176] A reference slurry group is prepared, and each reference slurry in the reference slurry group is ultrasonically scanned 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] Determine the reference defect scanning signal characteristic value of each reference ultrasonic scanning signal in each reference ultrasonic scanning signal group, construct a reference defect scanning signal characteristic value-probe array element mapping spectrum, and form 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, determine the region Q2 corresponding to the current reference defect scanning signal characteristic value-probe array element mapping spectrum, and generate 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] The reference defect size corresponding to the searched reference defect region feature is determined, and the defect size corresponding to the current region Q1 is estimated.

[0182] It should be noted that, according to the type of ultrasonic scanning test of the slurry to be inspected, it is necessary to construct a reference slurry in a reference ultrasonic reflection signal group and a reference ultrasonic transmission signal group, and construct a corresponding reference defect scanning signal characteristic value-probe array element mapping spectrum. It can be understood that when constructing the reference defect scanning signal characteristic value-probe array element mapping spectrum, the above-mentioned slurry to be inspected should be replaced with a reference slurry. The reference slurry is a slurry with known defects, such as the known size of each defect. Preferably, each reference slurry has only one size of defect. The defects can be prepared in the reference slurry by the commonly used technical means in the technical field, and then the reference defect scanning signal characteristic value-probe array element mapping spectrum is constructed in the above manner. 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, which will not be repeated here.

[0183] When different reference slurries are used, different reference defect scanning signal characteristic value-probe array element mapping spectra can be generated; through multiple reference defect scanning signal characteristic value-probe array element mapping spectra, a reference defect scanning signal characteristic value-probe array element mapping spectrum group can be generated, wherein the situation of the reference defect scanning signal characteristic value can refer to the description of the above-mentioned defect scanning signal characteristic value 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, according to 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 defect region feature to be detected corresponding to the region Q1 is determined, wherein the defect region feature to be detected may be the area of ​​the region Q1 or the cumulative sum of the defect scanning signal feature values. When the defect region feature to be detected is the area of ​​the region Q1, it should be the enclosed area between the defect scanning signal feature value to be detected corresponding to the region Q1 and the horizontal coordinate. After determining the defect region feature to be detected corresponding to the region Q1, the reference defect region feature corresponding to the region Q2 may be determined in the same manner.

[0188] For the defect area features to be inspected in each area Q1, the corresponding reference defect area features are searched in the defect size reference defect area feature set, wherein the searched reference defect area features should be consistent with the defect area features to be inspected, or have the smallest deviation from the defect area features to be inspected. At this time, the defect corresponding to the defect area features 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, after determining the reference defect, the size of the reference defect can be determined. Thereafter, the defect size corresponding to the current region Q1 can be estimated based on the size of the reference defect. If the reference defect region feature is consistent with the defect region feature to be detected, the reference defect size can be directly used as the defect size corresponding to region Q1. When there is a deviation between the reference defect region feature and the defect region feature to be detected, a size range centered on the size of the current reference defect can be given according to 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 state information, the above can be adapted to the case where the defect is a bubble or agglomerate.

Claims

1. A slurry ultrasonic detection system, characterized in that: The slurry ultrasonic detection system comprises: 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 connected to each other, 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 mounted on a detection reference plane, wherein the ultrasonic probe array element set 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 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.

2. The slurry ultrasonic detection system according to claim 1 is 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 the 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 which is b.

3. The slurry ultrasonic detection system according to claim 2 is 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 is 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 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 where 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 tested and / or the defect detection state in the slurry to be tested, wherein the quality state of the slurry to be tested 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.

6. The slurry ultrasonic detection system according to claim 5, characterized in that: When generating a group of ultrasonic reflection signals to be detected, it includes: A group of ultrasonic probe array element groups on the detection reference plane is configured as a target ultrasonic probe array element group, and at least one ultrasonic probe array element linear array is selected in the target ultrasonic probe array element group as the target ultrasonic probe array element linear array; An ultrasonic signal is transmitted to the slurry to be inspected by using the probe array elements 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 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.

7. The slurry ultrasonic detection system according to claim 5, characterized in that: When generating a group of ultrasonic transmission signals to be detected, it includes: The second type of delivery pipe comprises at least two detection reference planes; The ultrasonic probe assembly comprises at least two groups of ultrasonic probe array element groups, wherein the two groups of ultrasonic probe array element groups are respectively mounted on two corresponding detection reference planes, and the two groups of ultrasonic probe array element groups are correspondingly distributed; 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; 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.

8. The slurry ultrasonic detection system according to claim 5, characterized in that: The method for determining the defect detection status in the slurry to be inspected based on the slurry ultrasonic scanning information includes: Extracting a group of ultrasonic scanning signal groups to be detected in the slurry ultrasonic scanning information, and determining a characteristic value of a defect scanning signal to be detected of any ultrasonic scanning signal to be detected in the group of ultrasonic scanning signals 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 defect detection state of the slurry to be inspected is determined based at least on the constructed defect scanning signal characteristic value to be inspected-probe array element mapping spectrum, wherein: When the defect state is determined to be the presence of defects in the slurry to be inspected, the determined defect property information includes the number of defects, the location of defects and / or the size of defects, and the defect type includes bubbles and / or agglomerates.

9. The slurry ultrasonic detection system according to claim 8, 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 the characteristic value of the defect scanning signal to be inspected-probe array element 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 the corresponding reference ultrasonic reflection signal to identify and extract the 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 array elements, and the reference slurry is a slurry of the same type as the slurry to be inspected and has no defects; Based on each defect ultrasonic reflection signal, extract and generate the corresponding defect reflection signal characteristic value to be detected, and use the defect reflection signal characteristic value to be detected as the defect scanning signal characteristic value to be detected; The probe array elements in the linear array of the target ultrasonic probe array elements are numbered in sequence, and the probe array elements are matched one by one with the characteristic values ​​of the reflection signal of the defect to be detected according to the numbering sequence of the probe array elements, so as to construct a mapping spectrum between the characteristic value of the scanning signal of the defect to be detected and the probe array element.

10. The slurry ultrasonic detection system according to claim 8, 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 value of the defect scanning signal to be inspected-probe array element 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 matched one by 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, so as 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 transmission signal characteristic value of each ultrasonic transmission signal to be detected; Extracting a reference transmission signal characteristic value of a reference slurry transmission signal under a corresponding 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 characteristic value of the current ultrasonic transmission signal to be detected.

11. The slurry ultrasonic detection system according to claim 9 or 10, 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 that there is a defect in the slurry to be detected; When it is determined that the defect state is that there is a defect in the slurry to be detected, and there are corresponding characteristic values ​​of the scanning signal of the defect to be detected 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 detected is determined based on at least the corresponding included area Q1 in the mapping spectrum of the defect scanning signal to be detected and the probe array element.

12. The slurry ultrasonic detection system according to claim 11, 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 scan signal of the defect to be inspected-probe array element mapping spectrum is counted, and the counted number of regions Q1 is used as the number of defects.

13. The slurry ultrasonic detection system according to claim 11, 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 defect scanning signal to be detected corresponding to the region Q1, and based on the determined maximum value of the characteristic value of the defect scanning signal to be detected, determine the probe array element corresponding to the maximum characteristic value of the defect scanning signal to be detected and the number of the probe array element; Based on the numbers of the probe array elements and the distribution positions of the probe array elements, the positions of the current defects in the slurry to be inspected are estimated.

14. The slurry ultrasonic detection system according to claim 11, characterized in that: Methods for determining the size of defects within the slurry include: A reference defect scanning signal characteristic value-probe array element mapping spectrum group is constructed, 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 when constructing the reference defect scanning signal characteristic value-probe array element mapping spectrum group, it includes: A reference slurry group is prepared, and each reference slurry in the reference slurry group is ultrasonically scanned 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; Determine the reference defect scanning signal characteristic value of each reference ultrasonic scanning signal in each reference ultrasonic scanning signal group, construct a reference defect scanning signal characteristic value-probe array element mapping spectrum, and form 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, determine the region Q2 corresponding to the current reference defect scanning signal characteristic value-probe array element mapping spectrum, and generate 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; The reference defect size corresponding to the searched reference defect region feature is determined, and the defect size corresponding to the current region Q1 is estimated.

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