A device for detecting indentations on the wall of a storage tank

Abstract

The present application relates to the technical field of micro-damage detection, and discloses a kind of storage tank wall surface indentation detection device, including three groups of lifting support components, annular guide rail and detection component;Three groups of lifting support components are arranged along the circumference of storage tank and supported at the bottom of annular guide rail, for adjusting the height of annular guide rail;Annular guide rail includes guide rail part and transmission part, guide rail part is used to provide guidance and support for detection component, and transmission part is used to provide the driving of circumferential motion for detection component;Detection component includes walking piece and detection piece, walking piece is rolling fit with guide rail part, and is transmission fit with transmission part, to drive detection component to make circumferential motion along annular guide rail, and detection piece is used to carry out indentation detection to the outer wall of storage tank.The device can realize full coverage indentation detection to different height and different circumferential position of the outer wall of storage tank, and the detection efficiency is high, and the influence on the overall performance of storage tank is small.

Description

Technical Field

[0001] This invention relates to the field of micro-destructive testing technology, and more specifically, to a device for detecting indentations on the walls of storage tanks. Background Technology

[0002] In industries such as thermal power, metallurgy, and petrochemicals, storage tanks are widely used in-service equipment that operates under high temperature, high pressure, and corrosive environments for extended periods. This can easily lead to material deterioration and damage, making regular inspections of storage tanks crucial. Traditional inspection methods primarily include on-site inspection and sampling tests. On-site inspection is a non-destructive testing method, but most techniques can only detect macroscopic defects in the equipment and cannot assess the current mechanical properties of the materials. While sampling tests can accurately obtain material properties, they require large sample sizes, and the sampling process can cause irreversible damage to the equipment, affecting its subsequent normal operation.

[0003] Indentation testing, as a micro-destructive testing method, accurately obtains the mechanical properties of materials in-service equipment, such as hardness, elastic modulus, and yield strength, by creating tiny indentations on the equipment surface, with minimal impact on overall performance. It has received increasing attention in the field of special equipment inspection in recent years. However, existing indentation testing methods mostly employ handheld instruments, requiring manual measurement point by point, which is inefficient, or can only move on a flat plane and cannot make continuous movements along the circumference of the tank's outer wall.

[0004] Patent CN223711251U discloses a high-precision portable micro-indentation detector, relating to the technical field of precision testing instruments. The micro-indentation detector includes a main unit, an indentation mechanism, a first driving component, and a testing assembly. The first driving component drives the indentation mechanism to compress the material to be tested. The indentation mechanism includes: a sliding seat; a guide rod slidably mounted on the sliding seat; an indenter pressed against the material to be tested to form a micro-indentation; and a spring device for driving the guide rod to slide away from the sliding seat. Although it can perform indentation detection along a single surface of the object to be tested, its detection range is limited, and it cannot meet the requirement of circumferential detection of the object.

[0005] Therefore, there is an urgent need for an indentation detection component that can move continuously along the outer wall of the storage tank in both circumferential and vertical directions to achieve large-scale, high-efficiency, and full-coverage indentation detection of the outer wall of the storage tank. Summary of the Invention

[0006] The purpose of this invention is to provide a tank wall indentation detection device to solve the technical problem that existing indentation detection components cannot be continuously moved circumferentially along the outer wall of the tank and adjusted over a wide range in the height direction, so as to achieve full coverage indentation detection at different heights and different circumferential positions on the outer wall of the tank.

[0007] To achieve the above objectives, the present invention provides the following solution: The present invention provides a tank wall indentation detection device, comprising: several sets of lifting support assemblies, an annular guide rail, and a detection assembly; the several sets of lifting support assemblies are arranged at intervals along the circumference of the tank and supported at the bottom of the annular guide rail, for adjusting the height of the annular guide rail; the annular guide rail includes a guide rail portion and a transmission portion, the guide rail portion is used to provide guidance and support for the detection assembly, and the transmission portion is used to provide circumferential movement drive for the detection assembly; the detection assembly includes a traveling component and a detection component, the traveling component rolls with the guide rail portion and drives the transmission portion to drive the detection assembly to move circumferentially along the annular guide rail, and the detection component is used to perform indentation detection on the outer wall of the tank.

[0008] According to the present invention, a tank wall indentation detection device includes a lifting support assembly comprising a base, a guide rail, a sliding seat, a lifting motor, a lead screw, a scissor arm assembly, and a top plate. The base is fixedly installed on the ground, the guide rail is fixedly installed on the upper surface of the base, and the sliding seat is slidably engaged with the guide rail. The lifting motor is installed on the base, the lead screw is arranged along the length of the guide rail, one end of the lead screw is connected to the output end of the lifting motor, and the lead screw nut on the lead screw is fixedly connected to the sliding seat. The lower end of the scissor arm assembly is hinged to the sliding seat and the base, and the upper end of the scissor arm assembly is hinged to the top plate to convert the horizontal linear motion of the sliding seat into the vertical lifting motion of the top plate. The top plate is fixedly connected to the annular guide rail.

[0009] According to the present invention, a tank wall indentation detection device includes an upper guide rail and a lower gear ring. The upper guide rail is fixedly connected to the lower gear ring. The upper guide rail has an I-shaped cross-section for rolling engagement with the traveling component. The outer circumference of the lower gear ring has a toothed structure for transmission engagement with the traveling component.

[0010] According to the present invention, a tank wall indentation detection device includes a traveling component comprising a platform, a drive motor, a drive gear, and a driven roller. The drive motor and the driven roller are both mounted on the platform. The drive gear is connected to the output shaft of the drive motor and meshes with the lower gear ring to drive the platform to move circumferentially along the annular guide rail. The driven roller rolls in cooperation with the upper guide rail.

[0011] According to the present invention, a tank wall indentation detection device includes an indenter, an indenter driving assembly, and a force measuring system. The indenter driving assembly is fixedly installed on the upper surface of the platform, and the extension and retraction direction of the indenter driving assembly is horizontally oriented towards the tank wall. The force measuring system is installed at the extension end of the indenter driving assembly, and the indenter is installed at the extension end of the force measuring system. A displacement measuring system is fixedly installed on the force measuring system for detecting the displacement of the indenter relative to the force measuring system.

[0012] According to the present invention, the upper guide rail has an I-shaped cross-section, and the I-shaped cross-section of the upper guide rail provides vertical support and lateral guidance for the driven roller.

[0013] According to the present invention, a tank wall indentation detection device is provided, wherein the driven rollers are arranged at circumferential intervals along the platform and roll in cooperation with the upper guide rail to maintain the stability of the detection component during movement.

[0014] According to the present invention, a tank wall indentation detection device includes a lifting support assembly further comprising a fixed base and a support base. The fixed base is installed at one end of the base, the lifting motor is fixedly installed on the fixed base via a flange, one end of the lead screw is rotatably connected to the fixed base and connected to the output shaft of the lifting motor via a coupling, the other end of the lead screw is rotatably connected to the support base, and the support base is fixed on the base.

[0015] The present invention discloses the following technical effects: This invention utilizes several sets of circumferentially spaced lifting support components to synchronously support and adjust the height of the annular guide rail, ensuring that the annular guide rail remains horizontal during lifting and lowering, providing a stable reference height for indentation detection, and achieving full coverage detection of the tank wall at different heights. The guide rail and transmission parts of the annular guide rail cooperate with the traveling components of the detection component, enabling the detection component to move stably circumferentially along the outer wall of the tank, facilitating detection of the tank wall at different circumferential positions. The coordination between the height adjustment of the lifting support components and the circumferential movement of the traveling components helps to expand the coverage of indentation detection and improve the detection efficiency of the tank's outer wall. The indentation detection method results in smaller indentations on the tank's outer wall, helping to obtain material mechanical properties while minimizing the impact on the overall performance of the equipment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the lifting support assembly in this invention; Figure 3 This is a schematic diagram of the annular guide rail in this invention; Figure 4 This is a schematic diagram of the detection component and the annular guide rail in this invention; The components include: 1. Lifting support assembly; 101. Base; 102. Guide rail; 103. Sliding seat; 104. Lifting motor; 105. Fixed seat; 106. Lead screw; 107. Support seat; 108. Scissor arm assembly; 109. Top plate; 2. Circular guide rail; 201. Upper guide rail; 202. Lower gear ring; 3. Detection assembly; 301. Platform; 302. Drive motor; 303. Drive gear; 304. Driven roller; 305. Indenter drive assembly; 306. Force measurement system; 307. Indenter; 308. Displacement measurement system. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] like Figures 1 to 4 As shown, the present invention provides a tank wall indentation detection device, including several sets of lifting support components 1, annular guide rails 2 and detection components 3. In this embodiment, three sets of lifting support components 1 are provided.

[0021] Three sets of lifting support components 1 are arranged at intervals along the circumference of the storage tank and supported at the bottom of the annular guide rail 2. They are used to adjust the height of the annular guide rail 2. In this embodiment, the three sets of lifting support components 1 are evenly arranged at 120° intervals along the outer circumference of the storage tank to improve the stability and balance of the support for the annular guide rail 2. The annular guide rail 2 includes a guide rail part and a transmission part. The guide rail part is used to provide guidance and support for the detection component 3. The transmission part is used to provide driving cooperation for the circumferential movement of the detection component 3. The detection component 3 includes a traveling component and a detection component. The traveling component rolls with the guide rail part and drives the transmission part to drive the detection component 3 to move circumferentially along the annular guide rail 2. The detection component is used to perform indentation detection on the outer wall of the storage tank. The three sets of lifting support components 1 operate synchronously to keep the annular guide rail 2 horizontal during the adjustment of its height, thereby providing a stable detection benchmark for the detection component and enabling the detection component to perform indentation detection on the outer wall of the storage tank at different heights and circumferential positions.

[0022] The lifting support assembly 1 is a scissor lift device, including a base 101, a guide rail 102, a sliding seat 103, a lifting motor 104, a fixed seat 105, a lead screw 106, a support seat 107, a scissor arm assembly 108, and a top plate 109.

[0023] The base 101 is fixedly installed on the ground as the supporting base of the entire lifting support assembly 1. The guide rail 102 is fixedly installed on the upper surface of the base 101. In this embodiment, two parallel guide rails 102 are fixedly installed on the upper surface of the base 101. The top plate 109 is installed opposite to the base 101. Two parallel guide rails are also arranged on the lower surface of the top plate 109 to cooperate with the upper end of the scissor arm assembly 108 so that the top plate 109 can be raised and lowered smoothly.

[0024] The sliding seat 103 is fixedly mounted on sliding blocks on the guide rail 102 at both ends, allowing the sliding seat 103 to slide horizontally along the length of the guide rail 102. A fixed seat 105 is mounted on one end of the base 101. The lifting motor 104 is fixedly mounted on the fixed seat 105 via a flange. The lead screw 106 is arranged along the length of the guide rail 102. One end of the lead screw 106 (non-threaded section) is rotatably connected to the fixed seat 105 and connected to the output shaft of the lifting motor 104 via a coupling. The other end of the lead screw 106 (non-threaded section) is rotatably connected to a support seat 107, which is fixed to the base 101 to support the lead screw 106 and ensure its stable rotation. The sliding seat 103 is fixedly connected to the lead screw nut on the lead screw 106, thereby converting the rotational motion of the lead screw 106 into the horizontal linear motion of the sliding seat 103 along the guide rail 102.

[0025] The lower end of the scissor arm assembly 108 is hinged to the sliding seat 103 and the fixed plate on the base 101, respectively. The upper end of the scissor arm assembly 108 is hinged to the fixed plate on the top plate 109 and the sliding seat of the top plate 109, respectively. When the lifting motor 104 drives the lead screw 106 to rotate, the lead screw nut drives the sliding seat 103 to move horizontally along the guide rail 102. The included angle of the scissor arm assembly 108 changes accordingly, thereby converting the horizontal linear motion of the sliding seat 103 into the vertical lifting motion of the top plate 109. The top plate 109 is fixedly connected to the annular guide rail 2. Thus, through the synchronous operation of the three sets of lifting support components 1, the height of the annular guide rail 2 can be adjusted, and the annular guide rail 2 can be kept horizontal during the lifting process to avoid affecting the detection accuracy due to tilting.

[0026] The annular guide rail 2 includes a guide rail section and a transmission section. The guide rail section includes an upper guide rail, and the transmission section includes a lower gear ring. The upper guide rail 201 and the lower gear ring 202 are fixedly connected as one unit. The cross-section of the upper guide rail 201 is I-shaped and is used for rolling cooperation with the traveling component of the detection component 3. The I-shaped cross-section can provide vertical support and lateral guidance for the traveling component, which helps to ensure the stability of the detection component 3 during movement. The outer circumferential surface of the lower gear ring 202 is provided with a toothed structure for transmission cooperation with the traveling component to drive the detection component 3 to move circumferentially along the annular guide rail 2.

[0027] The traveling component of the detection assembly 3 includes a platform 301, a drive motor 302, a drive gear 303, and driven rollers 304. Both the drive motor 302 and the driven rollers 304 are mounted on the platform 301. The drive gear 303 is connected to the output shaft of the drive motor 302 and meshes with the lower gear ring 202, so that the platform 301 moves circumferentially along the annular guide rail 2 under the drive of the drive motor 302. The driven rollers 304 roll in engagement with the upper guide rail 201. In this embodiment, four driven rollers 304 are arranged circumferentially around the platform 301 and roll in engagement with the I-shaped cross-section of the upper guide rail 201 to provide stable vertical support and lateral guidance during the movement of the platform 301, helping to maintain the stability of the detection assembly 3 during movement.

[0028] The detection components include an indenter 307, an indenter drive assembly 305, and a force measurement system 306. The indenter drive assembly 305 is fixedly mounted on the upper surface of the platform 301, and its extension / retraction direction is horizontally towards the tank wall. The force measurement system 306 is horizontally mounted on the extension / retraction end of the indenter drive assembly 305 and is used to detect the contact force between the indenter 307 and the tank wall. The indenter 307 is mounted on the extension end of the force measurement system 306 and is used to apply an indentation to the outer wall of the tank. A displacement measurement system 308 is fixedly mounted on the force measurement system 306 and is horizontally fixed to the force measurement system 306. The displacement measurement system 308 is used to detect the displacement of the indenter 307 relative to the force measurement system 306. In this embodiment, the indenter drive assembly 305, the force measurement system 306, and the displacement measurement system 308 are all prior art.

[0029] During testing, firstly, based on the location to be tested on the storage tank, the height of the annular guide rail 2 is synchronously adjusted using three sets of lifting support components 1, ensuring the annular guide rail 2 reaches the designated height and remains horizontal. Then, the drive motor 302 operates, driving the drive gear 303 to mesh with the lower gear ring 202, causing the testing component 3 to move circumferentially along the annular guide rail 2 until it reaches the designated testing point and stops. Subsequently, the indenter drive component 305 pushes the indenter 307 horizontally towards the tank wall and applies pressure. The force measurement system 306 records the contact force between the indenter 307 and the tank wall in real time, and the displacement measurement system 308 records the indentation displacement of the indenter 307 in real time. After testing, the mechanical properties of the storage tank material are analyzed based on the obtained load-displacement curve. By repeating the above height adjustment and circumferential movement process, indentation testing can be performed on the outer wall of the storage tank at different heights and circumferential positions, facilitating the detection of indentations over a larger area of ​​the storage tank's outer wall.

[0030] All aspects not detailed in this invention are conventional technical means known to those skilled in the art.

[0031] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0032] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A device for detecting indentations on the wall of a storage tank, characterized in that, include: Several sets of lifting support components (1), ring guide rails (2) and detection components (3); Several sets of the lifting support components (1) are arranged at intervals along the circumference of the storage tank and supported at the bottom of the annular guide rail (2) for adjusting the height of the annular guide rail (2); The annular guide rail (2) includes a guide rail section and a transmission section. The guide rail section is used to provide guidance and support for the detection component (3), and the transmission section is used to provide circumferential motion drive for the detection component (3). The detection component (3) includes a traveling component and a detection component. The traveling component rolls with the guide rail and drives the transmission component to drive the detection component (3) to move circumferentially along the annular guide rail (2). The detection component is used to perform indentation detection on the outer wall of the storage tank.

2. The tank wall indentation detection device according to claim 1, characterized in that: The lifting support assembly (1) includes a base (101), a guide rail (102), a sliding seat (103), a lifting motor (104), a lead screw (106), a scissor arm assembly (108), and a top plate (109). The base (101) is fixedly installed on the ground, the guide rail (102) is fixedly installed on the upper surface of the base (101), and the sliding seat (103) is slidably engaged with the guide rail (102). The lifting motor (104) is mounted on the base (101), the lead screw (106) is arranged along the length direction of the guide rail (102), one end of the lead screw (106) is connected to the output end of the lifting motor (104), and the lead screw nut on the lead screw (106) is fixedly connected to the sliding seat (103). The lower end of the scissor arm assembly (108) is hinged to the sliding seat (103) and the base (101) respectively, and the upper end of the scissor arm assembly (108) is hinged to the top plate (109) respectively, so as to convert the horizontal linear motion of the sliding seat (103) into the vertical lifting motion of the top plate (109). The top plate (109) is fixedly connected to the annular guide rail (2).

3. The tank wall indentation detection device according to claim 1, characterized in that: The guide rail section includes an upper guide rail (201), and the transmission section includes a lower gear ring (202). The upper guide rail (201) and the lower gear ring (202) are fixedly connected. The cross section of the upper guide rail (201) is I-shaped and is used for rolling cooperation with the traveling component. The outer circumference of the lower gear ring (202) is provided with a toothed structure for transmission cooperation with the traveling component.

4. The tank wall indentation detection device according to claim 3, characterized in that: The traveling component includes a platform (301), a drive motor (302), a drive gear (303), and a driven roller (304). The drive motor (302) and the driven roller (304) are both mounted on the platform (301). The drive gear (303) is connected to the output shaft of the drive motor (302). The drive gear (303) meshes with the lower gear ring (202) to drive the platform (301) to move circumferentially along the annular guide rail (2). The driven roller (304) rolls with the upper guide rail (201).

5. The tank wall indentation detection device according to claim 4, characterized in that: The detection component includes a pressure head (307), a pressure head drive assembly (305), and a force measurement system (306). The pressure head drive assembly (305) is fixedly installed on the upper surface of the platform (301), and the extension and retraction direction of the pressure head drive assembly (305) is horizontally oriented towards the tank wall. The force measurement system (306) is installed at the extension end of the pressure head drive assembly (305), and the pressure head (307) is installed at the extension end of the force measurement system (306). A displacement measurement system (308) is fixedly installed on the force measurement system (306) for detecting the displacement of the pressure head (307) relative to the force measurement system (306).

6. The tank wall indentation detection device according to claim 4, characterized in that: The I-shaped cross-section of the upper guide rail (201) provides vertical support and lateral guidance for the driven roller (304).

7. The tank wall indentation detection device according to claim 4, characterized in that: The driven rollers (304) are arranged circumferentially along the platform (301) and roll in cooperation with the upper guide rail (201) to maintain the stability of the detection component (3) during movement.

8. The tank wall indentation detection device according to claim 2, characterized in that: The lifting support assembly (1) further includes a fixed seat (105) and a support seat (107). The fixed seat (105) is installed at one end of the base (101). The lifting motor (104) is fixedly installed on the fixed seat (105) through a flange. One end of the lead screw (106) is rotatably connected to the fixed seat (105) and connected to the output shaft of the lifting motor (104) through a coupling. The other end of the lead screw (106) is rotatably connected to the support seat (107). The support seat (107) is fixed on the base (101).

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