A flatness detection device for the outer wall of a pressure vessel

Abstract

The utility model discloses a kind of flatness detection devices of pressure vessel outer wall, it is related to pressure vessel detection technical field, including mounting bracket, rolling structure, press-down anti-jump structure and flatness detection mechanism, rolling structure is installed on mounting bracket, press-down anti-jump structure is installed on mounting bracket top surface and is located rolling structure length direction both sides, flatness detection mechanism is installed above press-down anti-jump structure;Flatness detection mechanism includes detection structure, support structure and adjusting structure, detection structure is located just above rolling structure.The flatness detection device of the pressure vessel outer wall is by being arranged in detection structure several detection points in linear close arrangement, the close arrangement of using multiple detection points can effectively improve the scanning width and resolution of detection component, not only effectively improve the efficiency and accuracy of container flatness detection, but also can obtain the shape and size of the uneven part of container surface using detection result analysis, effectively improve the practicality and use effect of device.

Description

Technical Field

[0001] This utility model relates to the field of pressure vessel testing technology, and more specifically, to a device for testing the flatness of the outer wall of a pressure vessel. Background Technology

[0002] Pressure vessels are closed devices that hold gases or liquids and bear a certain pressure. Their core function is to store or process fluid media (gas, liquid, or gas-liquid mixtures) under a set pressure. Because they contain a huge amount of energy, failure can lead to serious accidents such as explosions or leaks. Therefore, they are generally regarded as special equipment and are subject to strict supervision by national regulations.

[0003] Chinese utility model patent CN223138588U discloses a device for detecting the flatness of the outer wall of a pressure vessel. The device includes a base plate, a mounting frame on top of the base plate, a roller inside the mounting frame, a driving device on one side of the roller, a mounting plate on one side of the mounting frame, and a lifting device on top of the mounting plate. This technical solution uses the roller to drive the container to rotate, and through the cooperation of a transmission wheel, transmission belt, and grooved wheel, achieves rotation and height control of the container. Lines are drawn using a capacitive pen and an electronic contact plate, and data is transmitted through a signal transmitter for rapid measurement and recording. However, this technical solution detects flatness by sliding a probe on the container surface, and uses the movement of the probe to detect different positions on the container surface.

[0004] The above-mentioned method can only detect one point at a time, resulting in low detection efficiency. Furthermore, the lines drawn by the capacitive pen are linear, and the line jumps can only be used to find uneven locations, making it difficult to obtain the shape and size of the uneven locations, thus limiting its application. In addition, the above-mentioned method does not have a structure to restrict the movement of the container. During the rotation of the container, it is easy to jump due to the unevenness of its own surface, and the movement of the container will affect the accuracy of the detection results. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a device for detecting the flatness of the outer wall of a pressure vessel. This device detects the surface of the vessel by using multiple detection points arranged in a linear and close manner while ensuring the smooth rotation of the vessel. This effectively improves the detection efficiency and accuracy. The simultaneous use of multiple detection points can effectively improve the scanning width and resolution of the detection components. This helps to obtain the shape and size of uneven parts using the detection data while ensuring the identification effect of uneven parts, further improving the practicality and effectiveness of the device.

[0006] To achieve the above objectives, this utility model provides a flatness detection device for the outer wall of a pressure vessel, including a mounting frame, a rolling structure mounted on the mounting frame, a downward pressure anti-jump structure mounted on the top surface of the mounting frame and located on both sides of the rolling structure along its length, and a flatness detection mechanism mounted above the downward pressure anti-jump structure. The flatness detection mechanism includes a detection structure located directly above the rolling structure, a support structure installed on the top of the downward anti-jump structure, and an adjustment structure installed on the support structure for adjusting the vertical position of the detection structure. The detection structure includes a mounting block, a cloth sleeve, a stop block, a potentiometer, an outer contact plate, an upper contact plate, a processor, and a reset structure. The mounting block is installed at the bottom of the adjustment structure, and a sensing cavity and a processing cavity located above the sensing cavity are formed inside the mounting block. The cloth sleeve is fixedly installed at the bottom of the mounting block. Several abutments are linearly and evenly installed on the cloth sleeve. A portion of each abutment is inside the cloth sleeve, and another portion is at the bottom of the cloth sleeve. The potentiometer and the reset structure are both installed on the top of the abutments and slide into the sensing cavity. The upper contact plate is installed on the top of the potentiometer. The outer contact plate is installed on the inner bottom wall of the sensing cavity and contacts the outer wall of the potentiometer. The processor is installed in the processing cavity and is electrically connected to the outer contact plate and the upper contact plate. The reset structure is used to push the abutments downward.

[0007] Furthermore, the reset structure includes a guide rod installed on the top of the abutment and slidingly extending into the sensing cavity, and an elastic member located between the abutment and the mounting block and sleeved on the outside of the guide rod. The two ends of the elastic member are fixedly connected to the bottom of the abutment and the mounting block, respectively, and the top end of the guide rod is fixedly connected to the upper contact plate.

[0008] Furthermore, the downward pressure anti-jump structure includes two pressure plates located above the rolling structure and an electric push rod mounted on the pressure plates and fixedly connected to the top surface of the mounting bracket. The two pressure plates are respectively located above the two ends of the rolling structure in the length direction, and the pressure plates are inverted V-shaped.

[0009] Furthermore, the support structure includes a fixed plate located directly above the pressure plate, four connecting rods installed between the pressure plate and the fixed plate, and a fixed sleeve installed inside the fixed plate. The fixed sleeve is rectangular and has its opening facing downwards. The outer wall size of the mounting block is slidably adapted to the inner wall size of the fixed sleeve.

[0010] Furthermore, the adjustment structure includes a nut rotatably mounted on the fixed sleeve and a threaded rod fixedly mounted on the top of the mounting block and threadedly connected to the nut.

[0011] Furthermore, the rolling structure includes two horizontally rotatably mounted rollers within the mounting frame, a transmission assembly mounted on one side of the mounting frame along its length, and a drive component mounted on the side of the transmission assembly facing away from the mounting frame. The transmission assembly is used to drive the two rollers to rotate synchronously, and the drive component is used to drive the transmission assembly to operate.

[0012] Furthermore, the transmission assembly includes a cover fixedly installed on one side of the mounting frame along its length, a pulley installed on the roller shaft and located inside the cover, and a transmission belt fitted onto the two pulleys.

[0013] Furthermore, the potentiometer is a ceramic substrate with a thin metal film deposited on its surface.

[0014] Furthermore, a limiting ring is fixedly connected to the outside of the nut, and a limiting groove is provided on the fixing sleeve to slide and adapt to the nut and the limiting ring.

[0015] Compared with the prior art, this utility model has the following advantages and effects: 1. The pressure vessel outer wall flatness detection device of this utility model sets several detection points arranged linearly and closely in the detection structure. The close arrangement of multiple detection points can effectively improve the scanning width and resolution of the detection components. This not only effectively improves the efficiency and accuracy of container flatness detection, but also allows the shape and size of uneven parts on the container surface to be obtained by analyzing the detection results, thus effectively improving the practicality and use effect of the device.

[0016] 2. The pressure vessel outer wall flatness detection device in this utility model has a pressure-anti-jump structure, which allows the pressure plate to adhere to the side of the container away from the rolling structure under the action of the electric push rod, so as to restrict the movement of the container, avoid jumping during the rotation of the container, effectively ensure the smoothness of the container rotation process, and thus improve the reliability of the detection results of the detection structure.

[0017] 3. The pressure vessel outer wall flatness detection device of this utility model can form a closed circuit through the processor, outer contact plate, part of the potentiometer rod and upper contact plate. During the rotation of the container, the abutment can slide on the container surface, so that the abutment can drive the potentiometer rod to move vertically with the change of the flatness of the container surface. In this way, by changing the participation length of the potentiometer rod in the closed circuit, the resistance value in the circuit can be adjusted, so as to reflect the change of the flatness of the container surface through the change of the parameters in the circuit. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the pressure vessel outer wall flatness detection device in an embodiment of this utility model; Figure 2 This is a front cross-sectional view of the adjustment structure and detection structure of the pressure vessel outer wall flatness detection device in this embodiment of the present invention. Figure 3 This is a side cross-sectional view of the detection structure of the pressure vessel outer wall flatness detection device in an embodiment of this utility model. Figure 4 This is a top cross-sectional view of a portion of the rolling structure of the pressure vessel outer wall flatness detection device in an embodiment of this utility model.

[0019] Explanation of reference numerals in the attached figures: 1-Mounting bracket; 2-Rolling structure; 21-Drum; 22-Transmission assembly; 221-Cover; 222-Pulley; 223-Transmission belt; 23-Drive component; 3-Anti-jump structure under downward pressure; 31-Pressure plate; 32-Electric actuator; 4-Support structure; 41-Fixing plate; 42-Connecting rod; 43-Fixing sleeve; 5-Adjusting structure; 51-Nut; 511-Limit ring; 52-Threaded rod; 6-Detection structure; 61-Mounting block; 611-Sensing cavity; 612-Processing cavity; 62-Cloth sleeve; 63-Abutting block; 64-Potential rod; 65-Outer contact plate; 66-Upper contact plate; 67-Processor; 68-Guide rod; 69-Elastic element. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, 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; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Please see Figure 1-4As shown, this utility model embodiment provides a flatness detection device for the outer wall of a pressure vessel, including a mounting frame 1, a rolling structure 2, a downward pressure anti-jump structure 3, and a flatness detection mechanism. The rolling structure 2 is mounted on the mounting frame 1, the downward pressure anti-jump structure 3 is mounted on the top surface of the mounting frame 1 and located on both sides of the length direction of the rolling structure 2, and the flatness detection mechanism is mounted above the downward pressure anti-jump structure 3.

[0023] The flatness testing mechanism includes a testing structure 6, a support structure 4, and an adjustment structure 5. The testing structure 6 is located directly above the rolling structure 2. The support structure 4 is installed on top of the anti-jump structure 3. The adjustment structure 5 is installed on the support structure 4 and is used to adjust the vertical position of the testing structure 6.

[0024] The detection structure 6 includes a mounting block 61, a cloth sleeve 62, abutment blocks 63, a potentiometer rod 64, an outer contact plate 65, an upper contact plate 66, a processor 67, and a reset structure. The mounting block 61 is installed at the bottom of the adjustment structure 5. The mounting block 61 has a sensing cavity 611 and a processing cavity 612 located above the sensing cavity 611. The cloth sleeve 62 is fixedly installed at the bottom of the mounting block 61. Several abutment blocks 63 are linearly and evenly installed on the cloth sleeve 62. Part of the abutment block 63 is inside the cloth sleeve 62, and another part is at the bottom of the cloth sleeve 62. The potentiometer rod 64 and the reset structure are both installed on the top of the abutment blocks 63 and slide into the sensing cavity 611. The upper contact plate 66 is installed on the top of the potentiometer rod 64. The outer contact plate 65 is installed on the inner bottom wall of the sensing cavity 611 and contacts the outer wall of the potentiometer rod 64. The processor 67 is installed in the processing cavity 612 and is electrically connected to the outer contact plate 65 and the upper contact plate 66. The reset structure is used to push the abutment blocks 63 downward.

[0025] As a further description of the above scheme, the pressure vessel to be tested is placed on the rolling structure 2. The rolling structure 2 can drive the pressure vessel to rotate, while the downward pressure anti-jump structure 3 can press on the top of the pressure vessel to prevent the pressure vessel from jumping up and down during rotation and keep the pressure vessel rotating smoothly. When performing flatness testing, the position of the testing structure 6 can be adjusted using the adjusting structure 5, and the abutment 63 is pressed against the surface of the pressure vessel. As the pressure vessel rotates, the abutment 63 will drive the potentiometer 64 to move up and down according to the change in the flatness of the pressure vessel surface. During this process, the processor 67, together with the outer contact plate 65, the potentiometer 64, and the upper contact plate 66, can form a closed circuit. The up and down movement of the potentiometer 64 will cause the length of the potentiometer 64 between the outer contact plate 65 and the upper contact plate 66 to change, thereby causing the resistance of the potentiometer 64 to change, which in turn changes the monitoring data in the corresponding circuit. The processor 67 can analyze the changes in the flatness of the pressure vessel surface based on the changes in the monitoring data.

[0026] It should be noted that the side of the abutment 63 away from the mounting block 61 is designed with an arc, which can prevent the abutment 63 from getting stuck in the pit on the surface of the pressure vessel and hindering the rotation of the pressure vessel.

[0027] Please see Figure 1-3 As shown, potentiometer 64 is a ceramic substrate with a thin metal film deposited on its surface.

[0028] As a preferred embodiment of the above solution, the potentiometer 64 in this application is a high-purity ceramic substrate rod with a thin film deposited by vacuum sputtering or evaporation, and the material of the thin film is any one of nickel-chromium alloy, tantalum nitride and silicon-chromium compound. In addition, a spiral groove is etched on this thin film by laser; thereby forming a high-precision, small-size resistance adjustment component.

[0029] It should be noted that the potentiometer 64 is relatively small in size, and the linear and uniform arrangement of several potentiometers 64 can achieve comprehensive detection while ensuring detection accuracy, effectively improving detection efficiency.

[0030] Please see Figure 1-2 As shown, the reset structure includes a guide rod 68 and an elastic element 69. The guide rod 68 is installed on the top of the abutment block 63 and slides into the sensing cavity 611. The elastic element 69 is located between the abutment block 63 and the mounting block 61 and is sleeved on the outside of the guide rod 68. The two ends of the elastic element 69 are fixedly connected to the bottom of the abutment block 63 and the mounting block 61, respectively. The top end of the guide rod 68 is fixedly connected to the upper contact plate 66.

[0031] The abutment 63 can move away from the mounting block 61 by utilizing the elasticity of the elastic element 69, thus returning to its initial state without external force. When the abutment 63 contacts the surface of the pressure vessel, it will drive the potentiometer 64 to move along the length of the guide rod 68 as the flatness of the pressure vessel surface changes. In addition, the guide rod 68 can limit the horizontal movement of the abutment 63, so as to prevent the abutment 63 from moving horizontally due to friction during the rotation of the pressure vessel, effectively preventing the potentiometer 64 from bending and keeping the potentiometer 64 vertical.

[0032] Please see Figure 1 As shown, the downward pressure anti-jump structure 3 includes pressure plates 31 and electric push rods 32. The two pressure plates 31 are located above the rolling structure 2. The electric push rods 32 are installed on the pressure plates 31 and fixedly connected to the top surface of the mounting frame 1. The two pressure plates 31 are located above the two ends of the rolling structure 2 in the length direction, and the pressure plates 31 are inverted V-shaped.

[0033] The pressure plate 31 can move up and down under the action of the electric actuator 32, so that when a pressure vessel is placed on the rolling structure 2, the pressure plate 31 can restrict the up and down movement of the pressure vessel, thereby effectively preventing the pressure vessel from jumping during rotation, thus making the rotation of the pressure vessel smooth and improving the accuracy of flatness detection.

[0034] Please see Figure 1 As shown, the support structure 4 includes a fixed plate 41, connecting rods 42, and a fixed sleeve 43. The fixed plate 41 is located directly above the pressure plate 31. Four connecting rods 42 are installed between the pressure plate 31 and the fixed plate 41. The fixed sleeve 43 is installed inside the fixed plate 41. The fixed sleeve 43 is rectangular and has its opening facing downwards. The outer wall size of the mounting block 61 is slidably adapted to the inner wall size of the fixed sleeve 43. The mounting block 61 is located inside the fixed sleeve 43, and the fixed sleeve 43 can effectively restrict the rotation of the mounting block 61.

[0035] Please see Figure 1-2 As shown, the adjustment structure 5 includes a nut 51 and a threaded rod 52. The nut 51 is rotatably mounted on the fixed sleeve 43, and the threaded rod 52 is fixedly mounted on the top of the mounting block 61 and threadedly connected to the nut 51. This allows the rotation of the nut 51 to drive the threaded rod 52 to move the mounting block 61 up and down, thereby achieving the lifting and lowering adjustment of the detection structure 6.

[0036] Please see Figure 1-2 As shown, a limiting ring 511 is fixedly connected to the outer side of the nut 51, and a limiting groove is provided on the fixed sleeve 43 to slide and adapt to the nut 51 and the limiting ring 511; the limiting groove is provided to restrict the movement of the nut 51 without affecting the rotation of the nut 51.

[0037] Please see Figure 1 As shown, the rolling structure 2 includes rollers 21, a transmission assembly 22, and a drive member 23. The two rollers 21 are horizontally rotatably mounted in the mounting frame 1. The transmission assembly 22 is mounted on one side of the mounting frame 1 along its length, and the drive member 23 is mounted on the side of the transmission assembly 22 away from the mounting frame 1. The transmission assembly 22 is used to drive the two rollers 21 to rotate synchronously, and the drive member 23 is used to drive the transmission assembly 22 to rotate. This allows the two rollers 21 to rotate with the operation of the drive member 23 by utilizing the transmission assembly 22.

[0038] Please see Figure 1 and Figure 4As shown, the transmission assembly 22 includes a cover 221, pulleys 222 and a transmission belt 223. The cover 221 is fixedly installed on one side of the mounting frame 1 along its length. The pulleys 222 are installed on the shaft of the roller 21 and located inside the cover 221. The transmission belt 223 is fitted onto the two pulleys 222. This allows the two rollers 21 to rotate synchronously with the operation of the drive component 23 using a belt drive structure.

[0039] The working process of the aforementioned pressure vessel outer wall flatness detection device is as follows: When using the pressure vessel outer wall flatness detection device, the pressure vessel must first be placed between the two rollers 21 of the rolling structure 2 so that the two rollers 21 can support the pressure vessel. Then, the electric push rod 32 needs to be operated to move the pressure plate 31 down until it contacts the pressure vessel to prevent the pressure vessel from jumping during rotation. After that, the nut 51 needs to be rotated to move the threaded rod 52 to drive the detection structure 6 down until the abutment 63 in the detection structure 6 contacts the outer wall of the pressure vessel. At the same time, the elastic element 69 in the detection structure 6 also needs to be in a compressed state. During the flatness test, the drive unit 23 drives the transmission assembly 22 and the roller 21 to rotate, so that the roller 21 drives the pressure vessel to rotate. During this process, the abutment 63 will detect the surface of the pressure vessel as the pressure vessel rotates. During the test, the abutment 63 will drive the potentiometer 64 to slide vertically as the flatness of the pressure vessel surface changes, thereby changing the length of the potentiometer 64 located between the outer contact plate 65 and the upper contact plate 66, thereby adjusting the resistance value of the potentiometer 64. This allows the processor 67 to monitor the data of the resistance change in the circuit, so that the processor 67 can analyze the changes in the flatness of the pressure vessel surface based on the changes in the monitored data.

[0040] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A device for detecting the flatness of the outer wall of a pressure vessel, characterized in that, It includes a mounting frame (1), a rolling structure (2) mounted on the mounting frame (1), a downward pressure anti-jump structure (3) mounted on the top surface of the mounting frame (1) and located on both sides of the length direction of the rolling structure (2), and a flatness detection mechanism mounted above the downward pressure anti-jump structure (3); The flatness detection mechanism includes a detection structure (6) located directly above the rolling structure (2), a support structure (4) installed on the top of the downward anti-jump structure (3), and an adjustment structure (5) installed on the support structure (4) and used to adjust the vertical position of the detection structure (6). The detection structure (6) includes a mounting block (61), a cloth sleeve (62), a stop block (63), a potentiometer (64), an outer contact plate (65), an upper contact plate (66), a processor (67), and a reset structure. The mounting block (61) is installed at the bottom of the adjustment structure (5). The mounting block (61) has a sensing cavity (611) and a processing cavity (612) located above the sensing cavity (611). The cloth sleeve (62) is fixedly installed at the bottom of the mounting block (61). Several abutments (63) are linearly and evenly installed on the cloth sleeve (62). A part of the abutment (63) is inside the cloth sleeve (62), and another part is at the bottom of the cloth sleeve (62). The potentiometer (64) and the reset structure are both installed on the top of the abutment (63) and slide to the sensing cavity (611). The upper contact plate (66) is installed on the top of the potentiometer (64). The outer contact plate (65) is installed on the inner bottom wall of the sensing cavity (611) and contacts the outer wall of the potentiometer (64). The processor (67) is installed in the processing cavity (612) and is electrically connected to the outer contact plate (65) and the upper contact plate (66). The reset structure is used to push the abutment (63) downward.

2. The pressure vessel outer wall flatness detection device according to claim 1, characterized in that, The reset structure includes a guide rod (68) mounted on the top of the abutment (63) and slidingly extending into the sensing cavity (611), and an elastic member (69) located between the abutment (63) and the mounting block (61) and sleeved on the outside of the guide rod (68). The two ends of the elastic member (69) are fixedly connected to the bottom of the abutment (63) and the mounting block (61) respectively, and the top end of the guide rod (68) is fixedly connected to the upper contact plate (66).

3. The pressure vessel outer wall flatness detection device according to claim 1, characterized in that, The pressure-resistant anti-jump structure (3) includes two pressure plates (31) located above the rolling structure (2) and an electric push rod (32) mounted on the pressure plates (31) and fixedly connected to the top surface of the mounting bracket (1). The two pressure plates (31) are located above the two ends of the rolling structure (2) in the length direction, and the pressure plates (31) are inverted V-shaped.

4. The pressure vessel outer wall flatness detection device according to claim 3, characterized in that, The support structure (4) includes a fixed plate (41) located directly above the pressure plate (31), four connecting rods (42) installed between the pressure plate (31) and the fixed plate (41), and a fixed sleeve (43) installed inside the fixed plate (41). The fixed sleeve (43) is rectangular and has its opening facing downward. The outer wall size of the mounting block (61) is slidably adapted to the inner wall size of the fixed sleeve (43).

5. The pressure vessel outer wall flatness detection device according to claim 4, characterized in that, The adjustment structure (5) includes a nut (51) rotatably mounted on the fixed sleeve (43) and a threaded rod (52) fixedly mounted on the top of the mounting block (61) and threadedly connected to the nut (51).

6. The device for detecting the flatness of the outer wall of a pressure vessel according to claim 1, characterized in that, The rolling structure (2) includes two horizontally rotatably mounted rollers (21) in the mounting frame (1), a transmission assembly (22) mounted on one side of the mounting frame (1) in the length direction, and a drive member (23) mounted on the side of the transmission assembly (22) away from the mounting frame (1). The transmission assembly (22) is used to drive the two rollers (21) to rotate synchronously, and the drive member (23) is used to drive the transmission assembly (22) to operate.

7. The pressure vessel outer wall flatness detection device according to claim 6, characterized in that, The transmission assembly (22) includes a cover (221) fixedly installed on one side of the mounting frame (1) along its length, a pulley (222) installed on the shaft of the roller (21) and located inside the cover (221), and a transmission belt (223) fitted on the two pulleys (222).

8. The device for detecting the flatness of the outer wall of a pressure vessel according to claim 1, characterized in that, The potentiometer (64) is a ceramic substrate with a metal thin film deposited on its surface.

9. The device for detecting the flatness of the outer wall of a pressure vessel according to claim 5, characterized in that, A limiting ring (511) is fixedly connected to the outside of the nut (51), and a limiting groove is provided on the fixing sleeve (43) to slide and adapt to the nut (51) and the limiting ring (511).

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