Storage tank filler sedimentation three-dimensional shape detection system

Abstract

The invention provides a storage tank filler settlement three-dimensional shape detection system, and the system comprises an anti-leakage device which is disposed on a filling port of a storage tank, and forms the sealing of the filling port; the measuring rod comprises a first rotating assembly, a second rotating assembly and a laser module which are connected in sequence, and the measuring rod penetrates through the anti-leakage device and at least enables the laser module to stretch into the annular area of the storage tank filler; the first rotating assembly can rotate around the first axis of the first rotating assembly. The second rotating assembly is connected with the first rotating assembly and rotates around a first axis along with the first rotating assembly, and the second rotating assembly also rotates around a second axis of the second rotating assembly; the laser module is connected with the second rotating assembly, and the laser module is driven by the second rotating assembly to rotate around the second axis and rotate around the first axis along with the second rotating assembly; the first axis is perpendicular to the second axis. According to the invention, the three-dimensional form of the filling material of the storage tank can be accurately measured, and the filling amount of the filling material and the evaluation accuracy of the cavity volume are improved.

Description

Technical Field

[0001] The present application belongs to the technical field related to storage tank operation and maintenance and cold preservation, and in particular to a three-dimensional morphology detection system for the sedimentation of storage tank filling materials. Background Art

[0002] Cryogenic liquid gas storage tanks are typically insulated with perlite during daily operation. Due to factors such as internal pressure and structural deformation, the perlite within the tank will experience varying degrees of sedimentation. This results in reduced insulation effectiveness, increased evaporation, and increased energy consumption. In severe cases, this can damage the internal structure, impacting safe production. Regular monitoring of perlite sedimentation and accurate measurement of its three-dimensional morphology are crucial for improving perlite filling efficiency and maintaining safe tank operation.

[0003] Currently, traditional methods commonly used include visual inspection and infrared imaging, which significantly limit the timeliness of perlite settlement monitoring. For example, the device described in Chinese Patent Publication No. CN 217845319 U can only measure the height of a single point of perlite within a tank using a laser rangefinder outside the filling port, but cannot measure the entire perlite morphology to accurately assess the filling level. The device described in Chinese Invention Patent Application Publication No. CN 114636103 A uses a camera placed inside a sealed glass cover filled with nitrogen to visually observe the perlite's appearance, but cannot accurately measure the perlite's three-dimensional morphology. Summary of the Invention

[0004] In response to the above-mentioned technical problems existing in the prior art, an embodiment of the present application provides a three-dimensional morphology detection system for sedimentation of tank filling materials, which can detect the three-dimensional morphology of perlite and accurately estimate the cavity volume.

[0005] The technical solution adopted in the embodiment of the present application is: a three-dimensional morphology detection system for the settlement of filling materials in a storage tank, comprising:

[0006] an anti-leakage device, which is provided on the filling port of the storage tank and forms a seal for the filling port;

[0007] A measuring rod, comprising a first rotating assembly, a second rotating assembly and a laser module connected in sequence, wherein the measuring rod passes through the anti-leakage device and at least extends the laser module thereof into the annular area of the tank filling material; the first rotating assembly is capable of rotating around its own first axis; the second rotating assembly is connected to the first rotating assembly and is capable of rotating around the first axis along with the first rotating assembly, and the second rotating assembly is also capable of rotating around its own second axis; the laser module is connected to the second rotating assembly, and the laser module rotates around the second axis driven by the second rotating assembly and rotates around the first axis together with the second rotating assembly, wherein the first axis is perpendicular to the second axis.

[0008] In an optional embodiment, the first rotating assembly includes:

[0009] a first outer sleeve, which is inserted into the anti-leakage device and forms a seal with the anti-leakage sealing device;

[0010] a first pneumatic motor fixed in the first outer sleeve;

[0011] A first shaft is disposed in the first outer sleeve, and a first end of the first shaft is connected to the first pneumatic motor so that the first shaft rotates under the driving action of the first pneumatic motor. The axis of the first shaft forms the first axis, and the second end of the first shaft forms a rotation output end. The rotation output end is connected to the second rotating assembly to drive the second rotating assembly to rotate around the first axis along with the rotation output end.

[0012] In an optional embodiment, the first rotating assembly further includes:

[0013] a bearing mounting seat fixed in the first outer sleeve, the bearing mounting seat having a through hole;

[0014] a bearing sleeved on the first shaft, with the inner ring of the bearing fixed to the first shaft, the first shaft passing through the through hole, and the outer ring of the bearing fixed to the hole wall of the through hole, so that the first shaft and the bearing mounting seat are rotatably connected;

[0015] A bearing lock nut is threadedly connected to the first shaft and abuts against one end surface of the bearing for axially locking and positioning the bearing.

[0016] In an optional embodiment, the second rotating assembly includes:

[0017] a second outer sleeve, a first end of which is fixedly connected to the second end of the first shaft;

[0018] a second pneumatic motor fixed in the second outer sleeve;

[0019] A second shaft is disposed in the second outer sleeve, and a first end of the second shaft is connected to the second pneumatic motor so that the second shaft rotates under the driving action of the second pneumatic motor. The axis of the second shaft forms the second axis, and the second end of the second shaft is connected to the laser module to drive the laser module to rotate around the second axis together with the second shaft.

[0020] In an optional embodiment, the first rotating assembly further includes:

[0021] an air supply connector disposed in the first outer sleeve;

[0022] a gas straight-through connector, which is fixed to the first end of the first outer sleeve through an interface ring, and has multiple gas paths in the gas straight-through connector, at least one of which is connected to the first pneumatic motor for supplying gas to the first pneumatic motor, and at least one of which is connected to the gas supply connector for supplying gas to the second pneumatic motor through the gas supply connector;

[0023] A plurality of gas joints are provided on the gas straight-through connector and are connected and communicated with the plurality of gas paths in a one-to-one correspondence.

[0024] In an optional embodiment, the air supply connector includes a fixed portion and a rotating portion, the fixed portion is provided with a gas passage for connecting the air path and the second pneumatic motor, the rotating portion is provided in the fixed portion and can rotate relative to the fixed portion, and the first end of the first shaft is connected to the output shaft of the first pneumatic motor through the rotating portion; and / or

[0025] The first rotating assembly further includes a gas flow distribution valve, which is connected to the gas supply connector and is used to provide gas from the gas supply connector to the second pneumatic motor.

[0026] In an optional embodiment, the first rotating assembly further includes a circuit control board, and the gas through-connector is provided with an electrical interface terminal, which is connected to the circuit control board and is used to introduce an external power supply into the circuit control board;

[0027] The first shaft is provided with a first angle sensor for detecting its angle, and the second shaft is provided with a second angle sensor for detecting its angle; the circuit control board is electrically connected to the first angle sensor and the second angle sensor respectively, and is used to power the first angle sensor and the second angle sensor.

[0028] In an optional embodiment, the output shaft of the second pneumatic motor is connected to a transmission shaft through a coupling, the axis of the transmission shaft is colinear with the axis of the first shaft, and the axis of the transmission shaft is perpendicular to the axis of the second shaft; the transmission shaft is connected to the second shaft through a reversing gear set.

[0029] In an optional embodiment, the second rotating assembly further includes a mounting bracket;

[0030] The mounting bracket is fixed to the second end of the second outer sleeve, and a sealed cavity is defined in the mounting bracket. The mounting bracket is provided with an axial hole and a through hole communicating with the sealed cavity, and the axis of the axial hole is perpendicular to the axis of the through hole.

[0031] The second shaft is installed in the shaft hole through a bearing, the first end of the second shaft is located outside the shaft hole and forms a connecting end, the laser module is fixed to the connecting end, and the second end of the second shaft is located in the sealed cavity and is provided with a second angle sensor;

[0032] The transmission shaft extends through the through hole into the sealed cavity so as to be transmission-connected with the second shaft through the reversing gear set.

[0033] In an optional embodiment, the laser module includes:

[0034] a housing fixed to the second end of the second shaft of the second rotating assembly;

[0035] a laser assembly, disposed in the housing, for generating and outputting a laser beam;

[0036] A lens is fixed on the housing and is used to adjust the laser beam and enable the adjusted laser beam to scan the filling material in the storage tank.

[0037] In an optional embodiment, a ball valve is provided on the filling port of the storage tank;

[0038] The anti-leakage device includes a cylinder, a first end of which is provided with a sealing cover, and a second end of which is connected to the ball valve; an inert gas injection port and an inert gas discharge port are provided on the cylinder, and the inert gas injection port is connected to the inert gas pipeline;

[0039] The measuring rod sequentially passes through the cover and at least allows the laser module to extend into the annular area of the tank filling material via the cylinder, the ball valve and the filling port, wherein an oil seal is used between the measuring rod and the cover.

[0040] Compared with the prior art, the embodiments of the present application have the following advantages:

[0041] 1. The first rotating assembly of this application realizes rotational motion relative to a first axis, and the second assembly realizes rotational motion relative to a second axis. The two axes are perpendicular to each other. The superposition of the two rotational motions forms a spherical envelope motion trajectory, thereby driving the laser module to rotate 360 degrees in space, performing three-dimensional scanning, realizing the detection of the three-dimensional shape of the filling material and accurately estimating the cavity volume within the tank;

[0042] 2. The power of the two rotating assemblies of this application is achieved by compressed gas driving pneumatic motors, eliminating the potential risk of explosion caused by electric sparks generated by servo motors;

[0043] 3. Connect a leak-proof device above the ball valve at the filling port of the tank. The measuring rod enters the tank through the leak-proof device to prevent leakage of gas in the tank during the measurement process.

[0044] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention.

[0045] This application describes an overview of various implementations or examples of the technology, and is not a comprehensive disclosure of the full scope or all of the features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. The drawings illustrate various embodiments generally by way of example and not limitation, and together with the description and claims, serve to illustrate the disclosed embodiments. Where appropriate, like reference numerals are used throughout the drawings to refer to like or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive of the embodiments of the present apparatus or method.

[0047] Figure 1 This is the general assembly diagram of the detection system of an embodiment of the present application.

[0048] Figure 2 This is a schematic diagram of the three-dimensional structure of the measuring rod according to an embodiment of the present application.

[0049] Figure 3 This is a front view of the measuring rod according to an embodiment of the present application.

[0050] Figure 4 for Figure 3 AA section view.

[0051] Figure 5 This is an exploded view of the first rotating assembly of an embodiment of the present application.

[0052] Figure 6 This is an exploded view of the second rotating assembly of an embodiment of the present application.

[0053] Figure 7 for Figure 4 Magnified view of part B.

[0054] Figure 8 for Figure 4 Magnified view of part C.

[0055] Figure 9 This is an exploded view of the laser module according to an embodiment of the present application.

[0056] Figure 10 This is a partial cross-sectional view of the anti-leakage device according to an embodiment of the present application.

[0057] Reference numerals:

[0058] 1- Measuring stick;

[0059] 11-First rotating assembly; 1101-First outer sleeve; 1102-First pneumatic motor; 1103-First shaft; 1104-Bearing mounting seat; 1105-Through hole; 1106-First bearing; 1107-Bearing lock nut; 1108-First sealing ring; 1109-Gas supply connector; 1110-Fixed portion; 1111-Rotating portion; 1112-Gas straight-through connector; 1113-Gas path; 1114-Gas connector; 1115-Interface ring; 1116-Gas flow distribution valve; 1117-Circuit control board; 1118-Electrical interface terminal; 1119-First angle sensor; 1120-Sensor bracket;

[0060] 12-Second rotating assembly; 1201-Second outer sleeve; 1202-Connecting frame; 1203-Second pneumatic motor; 1204-Second shaft; 1205-Connecting end; 1206-Second angle sensor; 1207-Coupling; 1208-Transmission shaft; 1209-Reversing gear set; 1210-First bevel gear; 1211-Second bevel gear; 1212-Mounting bracket; 1213-Bracket body; 1214-Rear cover; 1215-Second sealing ring; 1216-Sealing chamber; 1217-Shaft hole; 1218-Through hole; 1219-Flange; 1220-Second bearing;

[0061] 13-laser module; 1301-housing; 1302-cover; 1303-laser assembly; 1304-lens; 1305-mounting hole;

[0062] 2- anti-leakage device; 21- cylinder; 22- inert gas injection port; 23- inert gas discharge port; 24- cover; 25- oil seal; 26- first connecting flange; 27- O-ring;

[0063] 3-ball valve; 31-second connecting flange; 32-third connecting flange;

[0064] 4-Filling port; 41-Fourth connecting flange. DETAILED DESCRIPTION

[0065] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0066] Unless otherwise defined, the technical or scientific terms used in this application should have the usual meanings understood by people with ordinary skills in the field to which this application belongs. The "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0067] In order to keep the following description of the embodiments of the present application clear and concise, detailed descriptions of known functions and known components are omitted in this application.

[0068] An embodiment of the present application provides a three-dimensional morphology detection system for sedimentation of filling material in a storage tank (hereinafter referred to as the detection system), which is used to perform three-dimensional morphology detection on the sedimentation of filling material in a storage tank.

[0069] like Figure 1 As shown, the detection system of the embodiment of the present application includes a leakage prevention device 2 and a measuring rod 1. The leakage prevention device 2 is provided on the filling port 4 of the storage tank and forms a seal on the filling port 4 to prevent leakage of natural gas in the storage tank.

[0070] like Figures 2 to 4As shown, the measuring rod 1 is the core component of the detection system and includes a first rotating assembly 11, a second rotating assembly 12, and a laser module 13 connected in sequence. The measuring rod 1 passes through the anti-leakage device 2 and extends at least its laser module 13 into the annular area of the tank filling material, so that the laser module 13 can be used to scan the filling material and perform filling material morphology detection. The first rotating assembly 11 can rotate around its own first axis; the second rotating assembly 12 is connected to the first rotating assembly 11 and can rotate around the first axis with the first rotating assembly 11, and the second rotating assembly 12 can also rotate around its own second axis; the laser module 13 is connected to the second rotating assembly 12, and the laser module 13 rotates around the second axis driven by the second rotating assembly 12, and rotates around the first axis together with the second rotating assembly 12, wherein the first axis is perpendicular to the second axis.

[0071] The detection system of the embodiment of the present application can form two rotations (or rotations) by adopting the first rotating assembly 11 and the second rotating assembly 12. The superposition of the two rotations forms a spherical envelope motion trajectory, thereby driving the laser module 13 to rotate 360 degrees in space to perform three-dimensional scanning of the filler, achieve accurate measurement of the three-dimensional shape of the filler, improve the accuracy of the assessment of the filling amount and cavity volume of the filler, and thereby improve the safety of tank operation.

[0072] In some embodiments, as Figure 4 and Figure 5 As shown, the first rotating assembly 11 includes a first outer sleeve 1101, a first pneumatic motor 1102 and a first shaft 1103. The first outer sleeve 1101 is inserted into the anti-leakage device 2 and forms a seal with the anti-leakage sealing device. The first pneumatic motor 1102 is fixed in the first outer sleeve 1101. The first shaft 1103 is arranged in the first outer sleeve 1101 and is concentric with the first outer sleeve 1101. The first end of the first shaft 1103 is connected to the first pneumatic motor 1102 so that the first shaft 1103 rotates under the drive of the first pneumatic motor 1102. The axis of the first shaft 1103 forms a first axis, that is, the first shaft 1103 rotates around its own axis under the action of the first pneumatic motor 1102. The second end of the first shaft 1103 forms a rotation output end, which is connected to the second rotating assembly 12 to drive the second rotating assembly 12 to rotate around the first axis along with the rotation output end. The first rotating assembly 11 of the present application is simple and reasonable in structure and easy to implement. Furthermore, the power of the first rotating assembly 11 is provided by the first pneumatic motor 1102, thereby eliminating the potential risk of natural gas explosion caused by electric sparks generated by using a servo motor as the power source.

[0073] In some embodiments, continued binding Figure 4 and Figure 5The first rotating assembly 11 further includes a bearing mount 1104, a first bearing 1106, and a bearing lock nut 1107. The bearing mount 1104 is fixed within the first outer sleeve 1101, and a seal is formed between the outer periphery of the bearing mount 1104 and the inner wall of the first outer sleeve 1101 to prevent gas from entering the first outer sleeve 1101 through the gap between the outer periphery and the inner wall of the first outer sleeve 1101. For example, a sealing groove can be provided on the outer periphery of the bearing mount 1104, and a first sealing ring 1108 can be disposed within the sealing groove to achieve sealing.

[0074] The bearing mounting seat 1104 has a through hole 1105, the first shaft 1103 passes through the through hole 1105, and the first bearing 1106 is sleeved on the first shaft 1103, and the inner ring of the first bearing 1106 is fixed to the first shaft 1103, and the outer ring of the first bearing 1106 is fixed to the hole wall of the through hole 1105, so that the first shaft 1103 and the first bearing 1106 cooperate to form a rotating pair, and the first shaft 1103 forms a rotating connection with the bearing mounting seat 1104, thereby ensuring that the first shaft 1103 can rotate axially relative to the first outer sleeve 1101, that is, rotate around the first axis.

[0075] An external thread is provided on the first shaft 1103, and the bearing lock nut 1107 is threadedly connected to the first shaft 1103. When the bearing lock nut 1107 is rotated toward the bearing mounting seat 1104, the bearing lock nut 1107 can be pressed against one end face of the first bearing 1106 (the end face on one side perpendicular to the axial direction of the first shaft 1103) to perform axial locking and positioning of the first bearing 1106.

[0076] In some embodiments, as Figure 6 and Figure 8 As shown, the second rotating assembly 12 includes a second outer sleeve 1201, a second pneumatic motor 1203 and a second shaft 1204. The first end of the second outer sleeve 1201 is fixedly connected to the second end of the first shaft 1103, the axis of the second outer sleeve 1201 coincides with the axis of the first shaft 1103, and the second outer sleeve 1201 rotates together with the first shaft 1103 around the first axis. The second pneumatic motor 1203 is fixed in the second outer sleeve 1201. The first end of the second shaft 1204 is connected to the second pneumatic motor 1203 so that the second shaft 1204 rotates under the drive of the second pneumatic motor 1203. The axis of the second shaft 1204 forms a second axis. The second end of the second shaft 1204 is connected to the laser module 13 to drive the laser module 13 to rotate around the second axis together with the second shaft 1204. The second rotating assembly 12 of the present application is simple and reasonable in structure and easy to implement. Furthermore, the power of the second rotating assembly 12 is provided by the second pneumatic motor 1203, thereby eliminating the potential risk of natural gas explosion caused by electric sparks generated by using a servo motor as the power source.

[0077] In order to facilitate the connection between the second outer sleeve 1201 and the first shaft 1103, and the arrangement of the gas flow distribution valve 1116, the first angle sensor 1119 and other components of the first rotating assembly 11 on the first shaft 1103, as shown in FIG. Figure 4 and Figure 5 As shown, the first shaft 1103 is designed to be a non-uniform diameter structure, that is, the part close to the first end is in the shape of a shaft rod, so as to be connected to the output shaft of the first pneumatic motor 1102 through a coupling-like structural part. The outer diameter of the middle part is larger than the outer diameter of the first end, and the part close to the second end has the largest outer diameter and is designed to be a variable diameter cylindrical structure, and the second end is exposed outside the first outer sleeve 1101 so as to be inserted into the first end of the second outer sleeve 1201 and connected by connecting parts such as bolts.

[0078] The first pneumatic motor 1102 and the second pneumatic motor 1203 can be driven by compressed air. The compressed air can be supplied to the two pneumatic motors in any form that can be passed into the measuring rod 1.

[0079] For example, Figure 4 、 Figure 5 and Figure 7 As shown, the first rotating assembly 11 further includes a gas supply connector 1109, a gas straight-through connector 1112, and a plurality of gas joints 1114. The gas supply connector 1109 is disposed within the first outer sleeve 1101. The gas straight-through connector 1112 is secured to the first end of the first outer sleeve 1101 via an interface ring 1115. The gas straight-through connector 1112 includes a plurality of gas paths 1113. At least one gas path 1113 is connected to the first pneumatic motor 1102 via a high-pressure explosion-proof gas connection pipe for supplying gas to the first pneumatic motor 1102. At least one gas path 1113 (different from the gas path 1113 connected to the first pneumatic motor 1102) is connected to the gas supply connector 1109 via a high-pressure explosion-proof gas connection pipe for supplying gas to the second pneumatic motor 1203 via the gas supply connector 1109. Multiple gas connectors 1114 are provided on the gas through-connector 1112 and are connected to and communicate with the multiple gas paths 1113 in a one-to-one manner. The gas connectors 1114 facilitate connection to a compressed air source, allowing compressed air to be injected into the gas paths 1113 and then supplied to the first pneumatic motor 1102 or to the second pneumatic motor 1203 via the gas supply connector 1109.

[0080] In this embodiment, there are four air paths 1113 in the gas straight-through connector 1112, two of which are air inlet paths 1113 and two are air return paths 1113. The two air inlet paths 1113 are respectively connected to the air inlet of the first pneumatic motor 1102 and the air inlet of the air supply connector 1109, and the two air return paths 1113 are respectively connected to the air return port of the first pneumatic motor 1102 and the air return port of the air supply connector 1109, so that the four air paths 1113 form two connected loops to supply air to the two pneumatic motors respectively and discharge the gas used by the two pneumatic motors.

[0081] Further, continue to combine Figure 5 and Figure 7 The outer circumferential surface of the gas straight-through connector 1112 is approximately a cylindrical surface, one end of which is inserted into the first end of the first outer sleeve 1101, and the interface ring 1115 is sleeved on the outside of the gas straight-through connector 1112. A part of the interface ring 1115 extends between the gas straight-through connector 1112 and the first outer sleeve 1101. The interface ring 1115 has an annular groove, and the first end of the first outer sleeve 1101 is inserted into the annular groove, so that the interface ring 1115 is used to fix the gas straight-through connector 1112 on the first outer sleeve 1101.

[0082] In some embodiments, as Figure 4 As shown, air supply connector 1109 includes a fixed portion 1110 and a rotating portion 1111. Fixed portion 1110 is provided with a gas passage, one end of which is connected to gas circuit 1113 and the other end is connected to second pneumatic motor 1203. This passage allows compressed air from gas circuit 1113 to flow through the passage and be supplied to second pneumatic motor 1203. Rotating portion 1111 is disposed within fixed portion 1110 and is rotatable relative to fixed portion 1110. The first end of first shaft 1103 is connected to the output shaft of first pneumatic motor 1102 via rotating portion 1111.

[0083] It is understood that the rotating portion 1111 is relative to the fixed portion 1110, and the rotating portion 1111 remains relatively stationary with the output shaft of the first pneumatic motor 1102 and the first shaft 1103. The rotating portion 1111 may include a coupling, and the output shaft of the first pneumatic motor 1102 and the first shaft 1103 are connected by the coupling.

[0084] The air supply connector 1109 of this embodiment cleverly integrates the air supply function and the connection function, which not only simplifies the structure but also facilitates its layout within the first outer sleeve 1101.

[0085] In some embodiments, as Figure 4 and Figure 5As shown, the first rotating assembly 11 also includes a gas flow distribution valve 1116, which is connected to the gas supply connector 1109. The second pneumatic motor 1203 is connected to the gas flow distribution valve 1116 via a high-pressure explosion-proof pipe to provide a power source for its rotation. In other words, the gas from the gas supply connector 1109 is provided to the second pneumatic motor 1203 through the gas flow distribution valve 1116. By providing the gas flow distribution valve 1116, the flow direction, flow rate, and pressure of the compressed air can be controlled, thereby accurately distributing the compressed air to the first pneumatic motor 1102 and the second pneumatic motor 1203 to ensure the normal operation and safety of the detection system.

[0086] In some embodiments, continued binding Figure 4 and Figure 5 The first rotating assembly 11 also includes a circuit control board 1117, which can be fixed in the first outer sleeve 1101 by a bracket. An electrical interface terminal 1118 is provided on the gas straight-through connector 1112, and the electrical interface terminal 1118 is connected to the circuit control board 1117 through the gas straight-through connector 1112, and is used to introduce external power into the circuit control board 1117 to provide the required power for the detection system. Among them, the circuit control board 1117 can adopt an intrinsically safe circuit control board 1117, which is also called an intrinsically safe circuit control board 1117. While its circuit design is done in accordance with explosion-proof standards and specifications, it also meets the functional requirements of the equipment, such as control of the laser radar, signal acquisition, signal processing, signal transmission and other functions. During the design, it is met that even if a spark occurs, its energy is not enough to ignite the natural gas.

[0087] like Figures 4 to 6 as well as Figure 8 As shown, a first angle sensor 1119 is provided on the first shaft 1103 for detecting its angle, and a second angle sensor 1206 is provided on the second shaft 1204 for detecting its angle. A circuit control board 1117 is electrically connected to the first angle sensor 1119 and the second angle sensor 1206, respectively, for supplying power to the first angle sensor 1119 and the second angle sensor 1206.

[0088] In this embodiment, the electrical interface terminals 1118 and circuit control board 1117 are located above the first rotating assembly 11, relatively far from the second rotating assembly 12. Furthermore, the first shaft 1103 of the first rotating assembly 11 and its components are rotating parts, making it difficult to provide power to the electrical components of the second rotating assembly 12 through the first rotating assembly 11. To address this issue, an electrical slip ring is installed on the bearing mounting seat 1104. This slip ring transmits power from the electrical interface terminals 1118 to electrical components of the second rotating assembly 12, such as the second angle sensor 1206, providing both power and signal connectivity.

[0089] When the detection system of this application is in use, first axis 1103 should remain vertical and second axis 1204 should remain horizontal. However, in practice, these two axes may not necessarily maintain the desired positions and may have a certain angular deviation. First angle sensor 1119 is used to detect the vertical tilt angle of first axis 1103, and second angle sensor 1206 is used to detect the horizontal tilt angle of second angle sensor 1206, which is used to subsequently correct the three-dimensional morphological data of the tank filling material settlement.

[0090] For example, Figure 4 As shown, a sensor bracket 1120 is fixed on the first shaft 1103, and the first angle sensor 1119 is arranged on the sensor bracket 1120. Figure 8 As shown, the second angle sensor 1206 is directly disposed on the second shaft 1204 .

[0091] In some embodiments, as Figure 8 As shown, the output shaft of the second pneumatic motor 1203 is connected to a transmission shaft 1208 via a coupling 1207. The axis of transmission shaft 1208 is colinear with the axis of the first shaft 1103 and perpendicular to the axis of the second shaft 1204. Transmission shaft 1208 is in transmission connection with the second shaft 1204 via a reversing gear set 1209, achieving both motion transmission and reversal. This allows the power of the second pneumatic motor 1203 to be transmitted to the second shaft 1204, driving the second shaft 1204 to rotate about the second axis.

[0092] In some embodiments, as Figure 6 and Figure 8 As shown, the second rotating assembly 12 also includes a mounting bracket 1212. The mounting bracket 1212 is fixed to the second end of the second outer sleeve 1201. The mounting bracket 1212 can be integral with the second outer sleeve 1201 or a separate structure. When the two are separated, a connecting bracket 1202 can be disposed within the second outer sleeve 1201. The connecting bracket 1202 has a flange-shaped structure facing the first end of the mounting bracket 1212. The end surface of the mounting bracket 1212 where the through hole 1218 is provided has a flange 1219, which is connected to the first end of the connecting bracket 1202.

[0093] Mounting bracket 1212 has a sealed cavity 1216 within it. Mounting bracket 1212 is provided with an axial hole 1217 and a through hole 1218, which communicate with sealed cavity 1216. The axis of axial hole 1217 is perpendicular to the axis of through hole 1218. Second shaft 1204 is mounted within axial hole 1217 via a second bearing 1220. The inner ring of second bearing 1220 is secured to second shaft 1204, while the outer ring of second bearing 1220 is secured within axial hole 1217, thereby forming a revolute pair that enables second shaft 1204 to rotate relative to mounting bracket 1212. The first end of second shaft 1204 is located outside axial hole 1217 and forms connecting end 1205. Laser module 13 is secured to connecting end 1205. The second end of second shaft 1204 is located within sealed cavity 1216 and is provided with a second angle sensor 1206. The transmission shaft 1208 is located in the sealed cavity 1216 so as to be in transmission connection with the second shaft 1204 through the reversing gear set 1209 .

[0094] Exemplarily, the reversing gear set 1209 may include a first bevel gear 1210 fixed to the transmission shaft 1208 and a second bevel gear 1211 fixed to a portion of the second shaft 1204 near its second end, wherein the first bevel gear 1210 meshes with the second bevel gear 1211. When the second pneumatic motor 1203 is started, the output shaft of the second pneumatic motor 1203 drives the transmission shaft 1208 to rotate via the coupling 1207. The transmission shaft 1208 drives the first bevel gear 1210 to rotate. The first bevel gear 1210 drives the second bevel gear 1211 to rotate. The second bevel gear 1211 drives the second shaft 1204 to rotate. In this way, the power of the second pneumatic motor 1203 is transmitted to the second shaft 1204, allowing the second shaft 1204 to rotate about its own axis (i.e., the second axis).

[0095] In order to facilitate the installation of the second shaft 1204, the reversing gear set 1209, the second angle sensor 1206, the coupling 1207 and the transmission shaft 1208 on the mounting bracket 1212, the mounting bracket 1212 can adopt a detachable split structure. Figure 6 and Figure 8 As shown, the mounting bracket 1212 includes a bracket body 1213 and a back cover 1214. The back cover 1214 is detachably mounted on the bracket body 1213. For example, the back cover 1214 is connected to the bracket body 1213 by bolts and forms a sealed cavity 1216 with the bracket body 1213. A second sealing ring 1215 is provided between the bracket body 1213 and the back cover 1214 to achieve sealing of this portion.

[0096] In some embodiments, as Figure 8 and Figure 9As shown, the laser module 13 includes a housing 1301, a laser assembly 1303, and a lens 1304. The housing 1301 is fixed to the second end of the second shaft 1204 of the second rotating assembly 12. A cavity is formed within the housing 1301, and the laser assembly 1303 is disposed within the cavity of the housing 1301 to generate and output a laser beam. The lens 1304 is fixed to the housing 1301 and is used to adjust the laser beam and scan the tank's filling material with the adjusted laser beam.

[0097] Exemplary, continue to combine Figure 8 The housing 1301 may be cylindrical, with one axial end open and covered with a cover plate 1302. The cover plate 1302 may be connected to the housing 1301 via screws or other fasteners, sealing the opening. The cover plate 1302 also secures the laser assembly 1303 within the cavity. The other axial end of the housing 1301 is closed and has a recessed cavity. The second end of the second shaft 1204 is flange-shaped and embedded within the cavity, and secured to the housing 1301 via screws or other fasteners. A mounting hole 1305 is provided on the outer wall of the housing 1301. The mounting hole 1305 is used to connect the cavity to the outside world. The lens 1304 is embedded within the mounting hole 1305 so that the laser beam generated by the laser assembly 1303 within the cavity can only be emitted outward through the lens 1304. The laser module 13 has a reasonable structural design and can rotate around the second axis following the second axis 1204 and around the first axis, thereby achieving 360-degree rotation in the annular area of the tank filling material, performing three-dimensional scanning, and completing the measurement of the filling material morphology.

[0098] In some embodiments, as Figure 1 Combined with Figure 10 As shown, a ball valve 3 is installed above the filling port 4 of the storage tank, and the ball valve 3 is in a closed position. The leak prevention device 2 includes a barrel 21, a cap 24 being provided at the first end of the barrel 21, and the ball valve 3 being connected to the second end of the barrel 21. The barrel 21 is provided with an inert gas injection port 22 and an inert gas discharge port 23. The inert gas injection port 22 is connected to the inert gas pipeline via a quick connector. To measure the shape of the tank filling material, inert gas is first injected into the barrel 21 through the inert gas injection port 22, and the air in the barrel 21 is discharged through the inert gas discharge port 23. After the air in the cylinder 21 is exhausted, the inert gas outlet 23 is closed, while the inert gas injection port 22 continues to flow. The ball valve 3 is opened, and the measuring rod 1, with one end of its laser module 13 facing downward, passes through the cap 24, the cylinder 21, the ball valve 3, and the filling port 4, allowing at least the laser module 13 of the measuring rod 1 to extend into the annular area of the tank fill material to measure the fill material morphology. The first end of the first outer sleeve 1101 of the measuring rod 1 is exposed outside the cylinder 21, facilitating access to compressed air and an external power source.

[0099] An oil seal 25 is used to seal the measuring rod 1 and the cover 24 to ensure that the oxygen content in the measuring channel is within a safe range and to prevent leakage of the cryogenic gas in the storage tank.

[0100] Continue to combine Figure 1 and Figure 10 The second end of the cylinder 21 is provided with a first connecting flange 26; the two ends of the ball valve 3 are respectively provided with a second connecting flange 31 and a third connecting flange 32. The second connecting flange 31 is sealed to the first connecting flange 26, and the third connecting flange 32 is sealed to the fourth connecting flange 41 on the filling port 4 of the storage tank. The connected connecting flanges are sealed by an O-ring 27. This facilitates the connection and sealing between the leakage prevention device 2, the ball valve 3, and the filling port 4.

[0101] The storage tank of the present application may be an LNG storage tank, and the filling material of the storage tank may be perlite. The inert gas injected through the inert gas injection port 22 may be nitrogen.

[0102] The above description is intended to be illustrative rather than restrictive, and those skilled in the art may make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present disclosure. Furthermore, the above examples (or one or more of them) may be used in combination with each other, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations.

Claims

1. A three-dimensional morphology detection system for tank filling material sedimentation, characterized in that: include: an anti-leakage device, which is provided on the filling port of the storage tank and forms a seal for the filling port; A measuring rod, comprising a first rotating assembly, a second rotating assembly and a laser module connected in sequence, wherein the measuring rod passes through the anti-leakage device and at least extends the laser module thereof into the annular area of the tank filling material; the first rotating assembly is capable of rotating around its own first axis; the second rotating assembly is connected to the first rotating assembly and is capable of rotating around the first axis along with the first rotating assembly, and the second rotating assembly is also capable of rotating around its own second axis; the laser module is connected to the second rotating assembly, and the laser module rotates around the second axis driven by the second rotating assembly and rotates around the first axis together with the second rotating assembly, wherein the first axis is perpendicular to the second axis.

2. The three-dimensional morphology detection system for tank filling material settlement according to claim 1 is characterized in that: The first rotating assembly includes: a first outer sleeve, which is inserted into the anti-leakage device and forms a seal with the anti-leakage sealing device; a first pneumatic motor fixed in the first outer sleeve; A first shaft is disposed in the first outer sleeve, and a first end of the first shaft is connected to the first pneumatic motor so that the first shaft rotates under the driving action of the first pneumatic motor. The axis of the first shaft forms the first axis, and the second end of the first shaft forms a rotation output end. The rotation output end is connected to the second rotating assembly to drive the second rotating assembly to rotate around the first axis along with the rotation output end.

3. The three-dimensional morphology detection system for tank filling material settlement according to claim 2 is characterized in that: The first rotating assembly further includes: a bearing mounting seat fixed in the first outer sleeve, the bearing mounting seat having a through hole; a bearing sleeved on the first shaft, with the inner ring of the bearing fixed to the first shaft, the first shaft passing through the through hole, and the outer ring of the bearing fixed to the hole wall of the through hole, so that the first shaft and the bearing mounting seat are rotatably connected; A bearing lock nut is threadedly connected to the first shaft and abuts against one end surface of the bearing for axially locking and positioning the bearing.

4. The three-dimensional morphology detection system for tank filling material settlement according to claim 2 is characterized in that: The second rotating assembly includes: a second outer sleeve, a first end of which is fixedly connected to the second end of the first shaft; a second pneumatic motor fixed in the second outer sleeve; A second shaft is disposed in the second outer sleeve, and a first end of the second shaft is connected to the second pneumatic motor so that the second shaft rotates under the driving action of the second pneumatic motor. The axis of the second shaft forms the second axis, and the second end of the second shaft is connected to the laser module to drive the laser module to rotate around the second axis together with the second shaft.

5. The three-dimensional morphology detection system for tank filling material settlement according to claim 4 is characterized in that: The first rotating assembly further includes: an air supply connector disposed in the first outer sleeve; a gas straight-through connector, which is fixed to the first end of the first outer sleeve through an interface ring, and has multiple gas paths in the gas straight-through connector, at least one of which is connected to the first pneumatic motor for supplying gas to the first pneumatic motor, and at least one of which is connected to the gas supply connector for supplying gas to the second pneumatic motor through the gas supply connector; A plurality of gas joints are provided on the gas straight-through connector and are connected and communicated with the plurality of gas paths in a one-to-one correspondence.

6. The three-dimensional morphology detection system for tank filling material settlement according to claim 5 is characterized in that: The air supply connector includes a fixed portion and a rotating portion, the fixed portion is provided with a gas passage for connecting the gas path and the second pneumatic motor, the rotating portion is provided in the fixed portion and can rotate relative to the fixed portion, and the first end of the first shaft is connected to the output shaft of the first pneumatic motor through the rotating portion; and / or The first rotating assembly further includes a gas flow distribution valve, which is connected to the gas supply connector and is used to provide gas from the gas supply connector to the second pneumatic motor.

7. The three-dimensional morphology detection system for tank filling material settlement according to claim 5 is characterized in that: The first rotating assembly further includes a circuit control board, and the gas through-connector is provided with an electrical interface terminal, which is connected to the circuit control board and is used to introduce external power into the circuit control board; The first shaft is provided with a first angle sensor for detecting its angle, and the second shaft is provided with a second angle sensor for detecting its angle; the circuit control board is electrically connected to the first angle sensor and the second angle sensor respectively, and is used to power the first angle sensor and the second angle sensor.

8. The three-dimensional morphology detection system for tank filling material settlement according to claim 4 is characterized in that: The output shaft of the second pneumatic motor is connected to a transmission shaft through a coupling. The axis of the transmission shaft is colinear with the axis of the first shaft, and the axis of the transmission shaft is perpendicular to the axis of the second shaft. The transmission shaft is connected to the second shaft through a reversing gear set.

9. The three-dimensional morphology detection system for tank filling material settlement according to claim 8, characterized in that: The second rotating assembly further includes a mounting bracket; The mounting bracket is fixed to the second end of the second outer sleeve, and a sealed cavity is defined in the mounting bracket. The mounting bracket is provided with an axial hole and a through hole communicating with the sealed cavity, and the axis of the axial hole is perpendicular to the axis of the through hole. The second shaft is installed in the shaft hole through a bearing, the first end of the second shaft is located outside the shaft hole and forms a connecting end, the laser module is fixed to the connecting end, and the second end of the second shaft is located in the sealed cavity and is provided with a second angle sensor; The transmission shaft extends through the through hole into the sealed cavity so as to be transmission-connected with the second shaft through the reversing gear set.

10. The three-dimensional morphology detection system for tank filling material settlement according to claim 4, characterized in that: The laser module includes: a housing fixed to the second end of the second shaft of the second rotating assembly; a laser assembly, disposed in the housing, for generating and outputting a laser beam; A lens is fixed on the housing and is used to adjust the laser beam and enable the adjusted laser beam to scan the filling material in the storage tank.

11. The three-dimensional morphology detection system for tank filling material settlement according to claim 1, characterized in that: A ball valve is provided on the filling port of the storage tank; The anti-leakage device includes a cylinder, a first end of which is provided with a sealing cover, and a second end of which is connected to the ball valve; an inert gas injection port and an inert gas discharge port are provided on the cylinder, and the inert gas injection port is connected to the inert gas pipeline; The measuring rod sequentially passes through the cover and at least allows the laser module to extend into the annular area of the tank filling material via the cylinder, the ball valve and the filling port, wherein an oil seal is used between the measuring rod and the cover.

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