Pressure vessel nondestructive testing simulation test device with replaceable test panel
By setting up windows and installing matching test plate components on the pressure vessel testing device, the problem of the inability to flexibly simulate pressure vessel defect detection in the existing technology is solved, and efficient and accurate detection is achieved without stopping the machine.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-16
- Publication Date
- 2026-03-10
AI Technical Summary
Existing technologies cannot flexibly simulate the defect detection of pressure vessels without shutting down the system, especially since they cannot take into account differences in operating space and orientation, resulting in inaccurate detection and low efficiency.
A pressure vessel non-destructive testing simulation device with replaceable test plates is designed. By setting windows on the test vessel and installing matching test plate assemblies, the device simulates weld and pit defects of the pressure vessel, ensuring that the test plate assembly matches the vessel shell to achieve a sealed connection and supporting flexible selection of testing positions.
It enables the simulation and testing of the actual operating space and orientation of pressure vessels without shutting down the system, improving the flexibility and accuracy of the testing and reducing the impact of the testing on production.
Smart Images
Figure CN121633429A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of nondestructive testing, and particularly relates to a replaceable test plate pressure vessel nondestructive testing simulation test device. BACKGROUND
[0002] Pressure vessels are used to store and transport liquid during offshore operations. The pressure vessels are generally formed into a shell by sheet metal welding. Welding defects and sheet metal surface defects can affect the service life of the pressure vessel. The humid and corrosive environment of offshore operations can further accelerate the impact of these defects on the pressure vessel. The traditional method requires detecting the use of the pressure vessel in a shutdown state. In order to reduce the adverse effects of detection on production efficiency, technical personnel have proposed nondestructive testing of pressure vessels from the outside without stopping. In order to select nondestructive testing equipment suitable for non-stop detection of pressure vessels, the prior art directly places a defective test piece on a test bench for simulation testing. This simulation testing method is easy to operate, allowing the operator to complete the detection operation in a comfortable posture. However, it does not take into account the differences in operation space and operation orientation of pressure vessel defect detection, i.e., it cannot simulate the actual detection space position, and the selection of detection positions on the pressure vessel shell is also not flexible. SUMMARY
[0003] The present application is proposed to solve the problems in the prior art, and aims to provide a replaceable test plate pressure vessel nondestructive testing simulation test device.
[0004] The present application is implemented by the following technical solutions: A replaceable test plate pressure vessel nondestructive testing simulation test device, comprising a test vessel and at least one test plate assembly, wherein the shell of the test vessel is formed with at least one window; the number of test plate assemblies is consistent with the number of windows, and the test plate assemblies are installed at the windows; at least one welding defect and a plurality of pit defects are formed on the test plate assemblies; the vertical face shape of the test plate assembly matches the window, and the surface profile of the test plate assembly matches the corresponding shell profile of the test vessel at the window.
[0005] In the above technical solution, the main body structure of the test vessel is a shell, and the size and shape of the shell are consistent with those of the actually used pressure vessel.
[0006] In the above technical solution, the window is arranged at at least one of the following positions: a position of a head transition section of the test vessel, a position of a tank wall below a liquid medium inlet, or positions on both sides of a cylinder and head connection weld, thereby simulating the working state of the part of the pressure vessel most prone to safety hazards.
[0007] In the above technical solution, the vertical face shape of the test plate assembly matches the window, and the surface profile of the test plate assembly matches the corresponding shell profile of the test vessel at the window.
[0008] In the above technical solution, the test plate assembly includes a first test plate and a second test plate, which are spliced together to form a whole plate; the first test plate is made of welded fragments, and weld defects are formed at the welds between the fragments; the surface of the second test plate has pit defects; the side edges of the first and second test plates are detachably pivotally connected to the window edge by hinges, or the side edges of the first and second test plates are detachably slidingly connected to the window edge by slots; the first and second test plates are locked or fixedly connected by snaps.
[0009] In the above technical solution, the weld defects include weld surface defects and weld buried defects; the inner surface of the test plate assembly (30) forms pit defects or both the inner and outer surfaces form pit defects; the pit defects are corrosion pits; the pit area of multiple pit defects gradually increases from small to large.
[0010] In the above technical solution, when the side edges of the first and second test plates are detachably slidably connected to the window edge via slots, the test plate assembly also includes a tooling frame. The tooling frame matches the shape of the window and is fixedly connected to the window edge. The tooling frame has slots, allowing the first and second test plates to be inserted into the slots to seal the window. One side of the tooling frame is pivotally connected to the window edge via a hinge, and the other side is locked to the window edge via a latch. A sealing strip is provided between the tooling frame and the window edge, and a sealing strip is provided between the slot of the tooling frame and the first and second test plates. A sealing strip is provided between the tooling frame and the window edge of the shell, and a sealing strip is provided between the slot of the tooling frame and the first test plate 31 and the second test plate 32. The sealing strips ensure the airtightness of the test plate assembly, preventing oil and gas resources or seawater stored in the test container 10 from leaking out through the window.
[0011] In the above technical solution, the first test plate is rectangular and includes a first fragment plate, a second fragment plate, and a third fragment plate. The first fragment plate and the second fragment plate are horizontally spliced to form a longitudinal weld. The third fragment plate is located below the first fragment plate and the second fragment plate and is vertically spliced with the first fragment plate and the second fragment plate to form a transverse weld. The longitudinal weld and the transverse weld are orthogonally connected to each other, and weld defects are formed at the longitudinal weld, the transverse weld, and the points where the two are orthogonally connected.
[0012] In the above technical solution, the weld surface defects and weld buried defects are arranged in an alternating array along the longitudinal weld and / or transverse weld extension direction, that is, the weld surface defects and weld buried defects are arranged in an alternating array along the longitudinal weld, transverse weld, or both extension directions, so that sufficient space is formed between the weld surface defects and weld buried defects to avoid mutual interference between the two types of weld defects during ultrasonic testing and to ensure the accuracy of testing; the weld surface defects and weld buried defects are arranged overlapping at the orthogonal junction of the longitudinal weld and the transverse weld.
[0013] In the above technical solution, multiple pit defects are formed on both the inner and outer surfaces of the second test plate.
[0014] The beneficial effects of this invention are: This invention provides a pressure vessel non-destructive testing simulation device with replaceable test plates. Common weld defects and pit defects encountered during pressure vessel use are pre-formed on the test plate kit, which is then conveniently installed at a specific window location on the test vessel. Because the facade shape of the test plate assembly matches the window, the test vessel remains sealed. Furthermore, the surface contour of the test plate assembly matches the corresponding shell contour of the test vessel at the window, ensuring that the orientation angle of the pre-set weld defects and pit defects relative to the test vessel is consistent with that of the actual pressure vessel. This allows for the simulation of the actual operating space and orientation for pressure vessel defect detection. Moreover, the easy installation and removal of the window and test plate assembly allows for flexible selection of any location on the pressure vessel shell for simulated testing. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the pressure vessel non-destructive testing simulation device with replaceable test plates in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the elevation shape of the test plate kit in Embodiment 1 of the present invention.
[0016] in: 10. Test container; 20. Open the window; 30. Test plate assembly; 31. First test plate; 311. First broken plate; 312. Second broken plate; 313. Third broken plate; 32. Second test plate; 33. Longitudinal weld; 34. Transverse weld; 35. Hinge.
[0017] For those skilled in the art, other related figures can be obtained from the above figures without any creative effort. Detailed Implementation
[0018] To enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0019] Example 1 like Figure 1 , 2 As shown, a pressure vessel non-destructive testing simulation device with replaceable test plates includes a test container 10 and a test plate assembly 30. A window 20 is formed on the shell of the test container 10; the test plate assembly 30 is installed at the window 20; weld defects and pit defects are formed on the test plate assembly 30.
[0020] The main structure of the test container 10 is a shell, the size and shape of which are consistent with those of the actual pressure vessel. Thus, the test container 10 simulates the working conditions of the actual pressure vessel, realizing a real operating space and position for simulating pressure vessel defect detection. The test plate kit is installed at the window 20 of the test container 10, and oil and gas resources or seawater are injected into the test container 10 (simulating oil and gas extraction or seawater desalination conditions). After a period of time, the defect changes on the test plate kit are inspected from the outside of the test container 10 using non-destructive testing methods such as ultrasound, thereby simulating the defect conditions of the corresponding parts of the pressure vessel in the real offshore operation scenario, and thus realizing the detection and evaluation of the pressure vessel's usage status without stopping the machine.
[0021] The more windows 20 there are, the more parts of the test container 10 can be installed and tested, and the higher the flexibility and efficiency of the simulation test. The facade shape and size of the windows 20 can be set arbitrarily. The "facade shape" refers to the shape when viewed from a direction perpendicular to the surface of the test container shell. The facade shape of the windows 20 can be set to a square, rectangle or circle. In this embodiment, a window 20 is provided on the shell of the test container 10; the window 20 is square and has a size of 600cm × 600cm.
[0022] The face shape of the test plate assembly 30 matches the window opening, and it can be detachably connected to the shell of the test container and seal the window opening; the surface contour of the test plate assembly 30 matches the corresponding shell contour of the test container at the window opening, so that the orientation angle of the preset weld defects and pit defects relative to the test container 10 is consistent with the actual pressure vessel, thereby enabling accurate evaluation of the service condition of the pressure vessel; "surface contour" refers to the cross-sectional contour of the shell of the test container, that is, if the shell of the test container is cylindrical as a whole, its "surface contour" is circular.
[0023] The test plate assembly 30 includes a first test plate 31 and a second test plate 32, which are spliced together to form a whole plate. The side edges of the first test plate 31 and the second test plate 32 are detachably pivotally connected to the edge of the window 20 of the test container 10 via hinges 35. The first test plate 31 and the second test plate 32 are fixedly connected to each other. The first test plate 31 is welded from broken plates, and weld defects are formed at the weld seams between the broken plates; the second test plate 32 has pit defects on its surface; different types of defects are formed on different test plates, making the process of pre-forming defects more convenient.
[0024] The first test plate 31 is formed by welding together a first fragment plate 311, a second fragment plate 312 and a third fragment plate 313; the first fragment plate 311 and the second fragment plate 312 are joined laterally to form a longitudinal weld 33; the third fragment plate 313 is located below the first fragment plate 311 and the second fragment plate 312, and is joined longitudinally with the first fragment plate 311 and the second fragment plate 312 to form a transverse weld 34, thereby forming a rectangular first test plate 31.
[0025] Since the pressure vessels used in practice are formed by welding sheet metal together to form the shell, the weld seams mainly include longitudinal weld seams 33 and transverse weld seams 34. Different weld seam orientations result in different influences and different defect development rates within the weld seams. Therefore, this embodiment of the invention uses three fragmented plates to form mutually orthogonal and intersecting transverse weld seams 34 and longitudinal weld seams 33, thereby enabling the pre-formation of weld defects at the transverse weld seams 34, longitudinal weld seams 33, and their intersections, achieving weld defect detection at different types of weld seams.
[0026] Weld defects mainly include weld surface defects and weld buried defects. The weld surface defects and weld buried defects are arranged in an alternating array along the longitudinal weld 33, the transverse weld 34 or both extension directions to form sufficient spacing between the weld surface defects and weld buried defects, so as to avoid mutual interference between the two types of weld defects during ultrasonic testing and ensure the accuracy of the test.
[0027] At the junction of transverse weld 34 and longitudinal weld 33, surface defects and buried defects overlap. The junction area is small, but the weld at the junction has sufficient thickness to allow surface defects and buried defects to have space between each other in the weld thickness direction, thus avoiding mutual interference between the two types of weld defects during ultrasonic testing.
[0028] The second test plate 32 has pit defects on both its inner and outer surfaces, which are corrosion pits. Multiple corrosion pits are formed on both the inner and outer surfaces of the second test plate 32, with the pit area gradually increasing from small to large. Smaller corrosion pits do not need to be detected by ultrasonic means. After the test container 10 has been used for a period of time, the ultrasonic sensor detects the corrosion pits one by one, from small to large area. When a corrosion pit of a certain area is detected, the detection process can be terminated, because larger corrosion pits are even less suitable for the use of pressure vessels. This method of distributing corrosion pit areas greatly improves the efficiency of ultrasonic testing.
[0029] The first test plate 31 and the second test plate 32 are joined together by welding to form a complete plate. For example... Figure 2 As shown, the first test plate 31 is rectangular and located on one side of the whole plate, and the second test plate 32 is rectangular and located on the other side of the whole plate. The side edges of the first test plate 31 and the second test plate 32 are detachably pivotally connected to the window edge of the housing via hinges 35.
[0030] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not 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 the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.
[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0032] The applicant declares that the above description is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention fall within the protection and disclosure scope of the present invention.
Claims
1. A replaceable test panel type pressure vessel non-destructive testing simulation test device, characterized by: The test container (10) and at least one test plate assembly (30) are included; the shell size and shape of the test container (10) are consistent with the actual use of the pressure vessel; at least one window (20) is formed on the shell of the test container (10); the test plate assembly (30) is consistent with the number of windows (20), and the test plate assembly (30) is installed at the window (20); at least one welding defect and a plurality of pit defects are formed on the test plate assembly (30); the facade shape of the test plate assembly (30) matches the window, and the surface profile of the test plate assembly matches the corresponding shell profile of the test container at the window.
2. The replaceable test panel pressure vessel non-destructive examination simulation test device of claim 1, wherein: The window (20) is arranged at at least one of the following positions of the test container (10): the position of the head transition section, the position of the liquid medium inlet below the tank wall, or the position of the cylinder and head connection weld on both sides.
3. The replaceable test panel pressure vessel non-destructive examination simulation test apparatus of claim 1, wherein: The facade shape of the test plate assembly (30) matches the window, and the surface profile of the test plate assembly (30) matches the corresponding shell profile of the test container (10) at the window.
4. The replaceable test panel pressure vessel non-destructive examination simulation test device of claim 1, wherein: The test plate assembly (30) includes a first test plate (31) and a second test plate (32), and the first test plate (31) and the second test plate (32) are spliced together to form a whole plate. The first test plate (31) is composed of broken plates, and welding defects are formed at the welding seams between the broken plates; the second test plate (32) has pit defects on the surface; The side edges of the first test plate (31) and the second test plate (32) are detachably pivotally connected to the edges of the window (20) through hinges (35), or the side edges of the first test plate (31) and the second test plate (32) are detachably slidably connected to the edges of the window (20) through insertion slots; the first test plate (31) and the second test plate (32) are connected by buckle locking or fixed connection.
5. The replaceable test panel pressure vessel non-destructive examination simulation test apparatus of claim 4, wherein: The welding defects include welding surface defects and welding embedded defects; the inner surface of the test plate assembly (30) forms pit defects or both the inner surface and the outer surface form pit defects; the pit defects are corrosion pits; the pit areas of the plurality of pit defects gradually increase from small to large.
6. The replaceable test panel pressure vessel non-destructive examination simulation test apparatus of claim 4, wherein: When the side edges of the first test plate (31) and the second test plate (32) are detachably slidably connected to the edges of the window (20) through insertion slots, the test plate assembly (30) further includes a tool frame, the tool frame matches the shape of the window (20), the tool frame is fixedly connected to the edges of the window (20), the tool frame forms insertion slots, and the first test plate (31) and the second test plate (32) can be inserted into the insertion slots to block the window; one side of the tool frame is pivotally connected to the edges of the window (20) through a hinge, and the other side of the tool frame is locked to the edges of the window (20) through a lock buckle; a sealing rubber strip is arranged between the tool frame and the edges of the window (20), and a sealing rubber strip is arranged between the insertion slots of the tool frame and the first test plate (31) and the second test plate (32).
7. The replaceable test panel pressure vessel non-destructive examination simulation test apparatus of claim 5, wherein: The first test plate (31) is rectangular, the first test plate (31) comprises a first broken plate (311), a second broken plate (312) and a third broken plate (313), the first broken plate (311) and the second broken plate (312) are transversely spliced to form a longitudinal weld (33), the third broken plate (313) is located below the first broken plate and the second broken plate, and is longitudinally spliced with the first broken plate (311) and the second broken plate (312) to form a transverse weld (34); the longitudinal weld and the transverse weld are orthogonal to each other and are connected, and the longitudinal weld, the transverse weld and the place where the two are orthogonal to each other are all formed with a weld defect.
8. The replaceable test panel pressure vessel non-destructive examination simulation test apparatus of claim 7, wherein: The weld surface defect and the weld buried defect are alternately and spacedly arranged along the extension direction of the longitudinal weld and / or the transverse weld; the weld surface defect and the weld buried defect are overlapped and arranged at the place where the longitudinal weld and the transverse weld are orthogonal to each other.
9. The replaceable test panel pressure vessel non-destructive examination simulation test device of claim 4, wherein: The inner surface and the outer surface of the second test plate (32) are both formed with a plurality of pit defects.