Regulating pressure equipment detection device and detection method thereof

Abstract

The present application belongs to the technical field of pressure vessel pressure detection, and discloses an adjustable pressure-bearing equipment detection device and a detection method thereof, which comprises a bottom plate and a fixed plate; a side plate is slidably arranged between the fixed plates; a synchronous adjusting mechanism is used for driving the side plates to move synchronously to adjust the distance between the two; a clamping assembly is installed on the side plate and comprises at least one L-shaped clamping plate; a swing arm mechanism corresponding to the at least one L-shaped clamping plate is used for driving the corresponding L-shaped clamping plate to swing to clamp or release the pressure vessel; a pressure sensor is arranged on the L-shaped clamping plate, and the detection end of the pressure sensor faces the inner side of the L-shaped clamping plate. The present application realizes high universality through the synchronous adjusting mechanism, realizes stable clamping through the swing arm mechanism and the L-shaped clamping plate, realizes the integration of clamping and detection by integrating the sensor on the clamping plate, ensures the stable contact between the sensor and the measured surface, and improves the accuracy and repeatability of detection.

Description

Technical Field

[0001] This invention relates to the field of pressure vessel pressure testing technology, and in particular to a testing device and method for adjustable pressure equipment. Background Technology

[0002] Pressure vessels are widely used in industrial and agricultural production, and the testing of their pressure-bearing performance is crucial. Traditional pressure vessel pressure-bearing performance testing equipment usually requires manual operation, which has two drawbacks. First, existing testing devices have fixed structures or limited adjustment ranges, making it difficult to flexibly adapt to pressure vessels of different sizes, resulting in a narrow range of applications and an inability to effectively meet diverse production needs. Second, existing clamping mechanisms have simple structures and single clamping methods—which are ineffective and cannot firmly fix the pressure vessel. During testing, the vessel may shift, leading to inaccurate test results. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art by proposing an adjustable pressure vessel testing device and method that can be applied to pressure vessels of various sizes and has stable clamping.

[0004] To address the problems existing in the prior art, as a first aspect, the present invention provides an adjustable pressure equipment detection device, including a base plate, and further including a fixing plate fixed on both sides of the top surface of the base plate; and a pair of side plates symmetrically distributed and slidably disposed between the fixing plates. A synchronous adjustment mechanism is used to drive the side plates to move synchronously towards or away from each other in order to adjust the distance between them; A clamping assembly is mounted on the side plate. The clamping assembly includes: at least one L-shaped clamping plate; and at least one swing arm mechanism corresponding to the at least one L-shaped clamping plate. Each swing arm mechanism is used to drive its corresponding L-shaped clamping plate to swing in order to clamp or release the pressure vessel. A pressure sensor is disposed on the L-shaped card plate, with the detection end of the pressure sensor facing the inside of the L-shaped card plate.

[0005] According to the present invention, the synchronous adjustment mechanism further includes: two pairs of linkage shafts rotatably inserted in the center of the base plate, each pair of linkage shafts being connected to a side plate on the same side via a hinge assembly; a triangular plate is fixedly mounted on the top surface of each side plate, a pair of suspended L-shaped clamping plates are provided at the three ends of the inner side surface of each triangular plate, the inner side wall of each L-shaped clamping plate is obliquely inwardly curved, and a U-shaped clamping plate is fixedly mounted at the three ends of each triangular plate, each U-shaped clamping plate being connected to a corresponding pair of L-shaped clamping plates via a swing arm mechanism; a pressure vessel is placed between a pair of side plates and suspended laterally, the inner side surface of each pair of L-shaped clamping plates is limited and engaged on the corresponding end of the pressure vessel, and an elliptical groove is opened on the inner side surface of each L-shaped clamping plate, a pressure sensor is installed inside each elliptical groove, and the detection end of each pressure sensor abuts against the corresponding side surface of the pressure vessel.

[0006] According to the present invention, each side plate has a fixing hole at the two corners at the bottom, a pair of parallel fixing rods are fixed between the tops of a pair of fixing plates, each fixing rod slides through the corresponding fixing hole, a pair of reinforcing plates are fixed at the top edge of each side plate, and each pair of reinforcing plates is fixed to the bottom edge of the triangular plate on the same side.

[0007] According to the present invention, the hinge assembly further includes a driven link and a driving link. A vertically distributed connecting plate is fixedly provided on the bottom of the inner side of the side plate. A pair of driven links arranged in a figure-eight shape are hinged at the two corners of the outer side of the connecting plate. A driving link is fixedly provided at the top end of each linkage shaft. The outer end of each driving link is movably hinged to the outer end of the driven link on the same side.

[0008] According to the present invention, a frame-shaped bracket is fixedly provided in the middle of the top surface of the base plate, and a first hydraulic cylinder with its telescopic end facing backward is installed in the opening of the frame-shaped bracket. A U-shaped lug is fixedly provided at the end of the hydraulic telescopic rod of the first hydraulic cylinder, and a limiting pin is fixedly provided in the opening of the U-shaped lug.

[0009] According to the present invention, each of the linkage shafts is further provided with a concentric linkage gear in the middle, and an adjacent pair of linkage gears are meshed and connected. A pair of extended linkages arranged in an "X" shape are fixed at the inner end of a pair of adjacent active linkages in the U-shaped frame. An elliptical pin hole is opened at the outer end of each of the extended linkages. The middle of the limiting pin shaft is inserted through the center of the intersection of the pair of elliptical pin holes.

[0010] According to the present invention, the swing arm mechanism further includes a parallel swing arm and a driven swing arm. A first connecting shaft is rotatably inserted between the top openings of the U-shaped plate and distributed through it. A pair of parallel swing arms are fixed at both ends of the first connecting shaft. A second connecting shaft is rotatably inserted at the inner end of the U-shaped plate and distributed through it. A pair of driven swing arms are fixed at both ends of the second connecting shaft. A U-shaped bracket is fixed on the outer side of the L-shaped plate, and the two ends of the opening of the U-shaped bracket are movably hinged to the outer end of the driven swing arm and the inner end of the parallel swing arm on the same side.

[0011] According to the present invention, further, an L-shaped swing arm is hinged inside the opening of the U-shaped card plate, the inner end of the L-shaped swing arm is fixedly connected to the middle of the first connecting shaft, a third connecting shaft is fixed between the outer ends of a pair of parallel swing arms, and the corner of the L-shaped swing arm is fixedly connected to the middle of the third connecting shaft.

[0012] According to the present invention, the triangular plate has a square through hole in the middle, and a second hydraulic cylinder with its telescopic end facing outward is installed inside the square through hole. The end of the hydraulic telescopic rod of the second hydraulic cylinder is fixed with a triangular bracket. Each of the three ends of the triangular bracket is provided with a movable H-shaped connecting rod, and the outer end of each H-shaped connecting rod is movablely hinged to the outer end of the L-shaped swing arm on the same side.

[0013] As a second aspect, the present invention also provides a detection method using the aforementioned adjustable pressure equipment detection device, comprising the following steps: Spacing adjustment: Drive the synchronous adjustment mechanism to move the pair of side plates to a preset spacing; Swing clamping: Drive the swing arm mechanism to swing the L-shaped clamping plate inward to clamp the pressure vessel; Pressure detection: The synchronous adjustment mechanism is driven to move a pair of side plates toward each other to apply a detection pressure to the pressure vessel through the L-shaped clamping plate, which is then detected by the pressure sensor.

[0014] Compared with the prior art, the beneficial effects of the present invention are: In this invention, by setting a synchronous adjustment mechanism to drive a pair of side plates to move synchronously, the distance between the two clamping assemblies can be adjusted flexibly and accurately. With the help of the hinge assembly and the linkage gear, it can quickly adapt to pressure vessels of different lengths and specifications, thus solving the problem of poor versatility of existing devices due to their fixed structure.

[0015] In this invention, by setting a swing arm mechanism to drive the L-shaped clamping plate to perform swing clamping, a stable and close-fitting clamping of the end of the pressure vessel can be achieved; in particular, when the inner sidewall of the L-shaped clamping plate is an inclined inward arc surface, it can better fit the contour of the container, increase the contact area, and effectively avoid errors caused by container shaking or displacement during the testing process.

[0016] In this invention, the pressure sensor is directly mounted on an L-shaped clamping plate, integrating the clamping and sensing components. During pressure testing, the sensor, along with the L-shaped clamping plate, applies pressure to the pressure vessel, ensuring stable contact between the sensor and the measured surface and reliable force transmission. This fundamentally solves the signal distortion problem caused by inaccurate positioning and unstable contact in traditional separate sensors, improving the accuracy and repeatability of the detection.

[0017] In this invention, the step-by-step operation process of spacing adjustment, swing clamping, and pressure detection, especially the application of pressure by moving the side plate after clamping, makes the entire detection process more precise and automated, thereby improving detection efficiency.

[0018] In summary, this invention achieves precise clamping and pressure testing of pressure vessels through the coordinated operation of various components. Its reasonable structural design and close linkage between components ensure the stability and accuracy of the testing process. At the same time, the hydraulic drive and swing arm mechanism design make the operation more flexible and efficient, suitable for the testing needs of pressure vessels of different specifications. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention (excluding the pressure vessel); Figure 3 This is an exploded view of the overall structure of the present invention; Figure 4 This is an exploded view of the structure of the base plate and a pair of side plates of the present invention; Figure 5 This is a schematic diagram of the structure of a pair of triangular plates of the present invention; Figure 6 This is an exploded view of the structure of a pair of triangular plates according to the present invention.

[0020] In the diagram, the numbers represent: 1-base plate; 2-fixed plate; 3-side plate; 4-fixed rod; 5-triangular plate; 6-pressure vessel; 7-reinforcing plate; 8-connecting plate; 9-driven connecting rod; 10-linkage shaft; 11-driving connecting rod; 12-linkage gear; 13-extension connecting rod; 14-limiting pin; 15-first hydraulic cylinder; 16-U-shaped lug; 17-U-shaped clamping plate; 18-L-shaped swing arm; 19-parallel swing arm; 20-driven swing arm; 21-U-shaped bracket; 22-L-shaped clamping plate; 23-pressure sensor; 24-second hydraulic cylinder; 25-triangular bracket; 26-H-shaped connecting rod. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] Example 1: This application provides an adjustable pressure equipment detection device, see [link to example]. Figures 1-6 Specifically, the system includes a base plate 1, with a pair of fixed plates 2 fixed to both sides of its top surface. The base plate 1 serves as the fundamental support structure for the entire device, while the fixed plates 2 are used to fix and support the side plates 3. The base plate 1 and fixed plates 2 provide a stable foundation, ensuring the entire device remains stable during operation and preventing swaying or displacement due to external forces. A pair of symmetrically distributed side plates 3 slide between the fixed plates 2, and the spacing between the two side plates 3 is adjustable. The side plates 3 are the moving carriers of the entire clamping system, and their adjustable spacing allows the entire clamping system to be used with containers of various sizes. To drive the synchronous movement of these two side plates 3, a synchronous adjustment mechanism is included. This synchronous adjustment mechanism can drive the two side plates 3 to move synchronously towards or away from each other, thereby quickly adapting to pressure vessels 6 of different lengths. This synchronous movement can prevent the pressure vessel 6 to be clamped from deflecting due to inconsistent movement on both sides during adjustment, improving clamping stability and facilitating subsequent accurate inspection.

[0023] Specifically, each side plate 3 is equipped with at least one clamping assembly. Each clamping assembly includes at least one L-shaped clamping plate 22 and a corresponding swing arm mechanism. The swing arm mechanism drives its corresponding L-shaped clamping plate 22 to swing. When clamping is required, the swing arm mechanism drives the L-shaped clamping plate 22 to swing inward, using its inner surface to clamp the end of the pressure vessel 6; when release is required, it drives it to swing in the opposite direction. This swing-type clamping action allows for rapid fixing and release of the pressure vessel 6.

[0024] A pressure sensor 23 is mounted on the L-shaped clamping plate 22, with the sensing end of the pressure sensor 23 facing the inside of the L-shaped clamping plate 22, that is, towards the pressure vessel 6 to be clamped. When the L-shaped clamping plate 22 clamps the pressure vessel 6 and applies a detection pressure, the sensing end of the pressure sensor 23 can naturally and stably abut against the surface of the pressure vessel 6. This structure solves the problem of signal distortion caused by the need for additional positioning and unstable contact in traditional separate sensors, thereby achieving high-precision pressure detection.

[0025] Furthermore, each L-shaped clamping plate 22 has an elliptical groove on its inner side, and a pressure sensor 23 is installed inside each elliptical groove. The detection end of each pressure sensor 23 is abutted against the corresponding side surface of the pressure vessel 6. The pressure sensor 23 is installed in the elliptical groove of the L-shaped clamping plate 22 to detect the pressure at the end of the pressure vessel 6. The pressure sensor 23 can detect the pressure at the end of the pressure vessel 6 in real time and convert it into an electrical signal, which is convenient for data analysis and recording, and ensures the accuracy and reliability of the detection results.

[0026] To obtain richer detection information, the pressure sensor 23 can be a flexible thin-film pressure sensor array that is pasted or integrated into the inner arc surface of the L-shaped clamping plate 22. This sensor array consists of multiple independent sensing units distributed across the entire contact surface. Its working principle is to upgrade single-point pressure measurement to two-dimensional pressure distribution imaging. When a detection pressure is applied, the data acquisition system no longer reads a single pressure value, but simultaneously acquires the pressure data of all units on the array, thereby reconstructing a pressure distribution cloud map on the container end face. In this way, not only can the total detection pressure be measured, but the uniformity of the pressure distribution can also be monitored in real time, which can be used to determine whether the clamping is aligned correctly and whether there are defects such as unevenness on the container end face. This solves the problem that traditional single-point sensors cannot assess the quality of the contact state.

[0027] Specifically, the synchronous adjustment mechanism includes two pairs of linkage shafts 10 rotatably inserted in the middle of the base plate 1. Each pair of linkage shafts 10 is connected to the side plate 3 on the same side through a hinge assembly. The side plate 3 slides and adjusts through the linkage shafts 10 and the hinge assembly to accommodate pressure vessels 6 of different lengths. The design of the linkage shafts 10 and the hinge assembly enables the side plate 3 to move synchronously, ensuring that both ends of the pressure vessel 6 can be clamped evenly, avoiding detection errors caused by uneven force on one side.

[0028] The synchronous adjustment mechanism can also employ an electrically driven structure. This mechanism may include a servo motor and a bidirectional lead screw connected to it. The bidirectional lead screw integrates a left-hand threaded section and a right-hand threaded section with opposite directions of rotation on one of its shafts. These two threaded sections engage with nut blocks fixed to the bottom of the two side plates 3, respectively. When the servo motor rotates, due to the opposite directions of the threads, the two side plates 3 will move synchronously towards or away from each other. Utilizing the high precision of the lead screw drive and the accuracy of the servo motor's closed-loop control, micron-level adjustment of the distance between the side plates 3 can be achieved by precisely controlling the motor's rotation angle. This solves the potential backlash and wear problems of traditional mechanical linkages, achieving higher precision positioning and more flexible motion control. Furthermore, a triangular plate 5 is fixed to the top surface of each side plate 3. Each triangular plate 5 has a pair of suspended L-shaped clamping plates 22 at its three inner ends. The inner wall of each L-shaped clamping plate 22 is an inwardly curved surface. The triangular plate 5 supports the L-shaped clamping plate 22, which, through its inwardly curved surface design, clamps the end face of the pressure vessel 6. This inwardly curved surface design allows for better contact with the end face of the pressure vessel 6, increasing the contact area and creating a self-centering effect. Compared to a flat clamping surface, this inwardly curved surface can form surface contact with the cylindrical or spherical container end rather than line or point contact, thus distributing the clamping force more evenly across the container surface and reducing localized stress. At the same time, when the L-shaped clamping plate 22 clamps inward, the geometry of the arc surface will generate a force on the pressure vessel 6 to align with the center, which helps to correct the slight positional deviation of the vessel, solves the problem that the flat clamping surface is prone to slipping or unstable contact, ensures the stability of clamping and the accuracy of positioning, and avoids slipping or falling off during the testing process.

[0029] Each triangular plate 5 has a U-shaped clamping plate 17 fixed at each of its three ends. Each U-shaped clamping plate 17 is connected to a corresponding pair of L-shaped clamping plates 22 through a swing arm mechanism. The U-shaped clamping plate 17 is connected to the L-shaped clamping plate 22 through the swing arm mechanism, which includes a parallel swing arm 19 and a driven swing arm 20, for driving the swing of the L-shaped clamping plate 22. The design of the swing arm mechanism allows the L-shaped clamping plate 22 to swing flexibly, ensuring that it can fit tightly against the end face of the pressure vessel 6, thereby improving the clamping accuracy and stability.

[0030] Furthermore, each side plate 3 has a fixing hole at the two corners at the bottom, and a pair of parallel fixing rods 4 are fixed between the tops of a pair of fixing plates 2. Each fixing rod 4 slides through the corresponding fixing hole. Each side plate 3 has a pair of reinforcing plates 7 fixed at the top edge, and each pair of reinforcing plates 7 is fixed to the bottom edge of the triangular plate 5 on the same side. The reinforcing plates 7 are used to strengthen the structural strength of the side plate 3, and the fixing rods 4 are used to guide the sliding of the side plate 3. The combination of the reinforcing plates 7 and the fixing rods 4 can enhance the stability of the side plate 3, solve the problem of insufficient rigidity that may be caused by the lightweight design, ensure that it will not deform or shift during movement, and improve the durability and reliability of the device.

[0031] Example 2: Based on Example 1, this example also includes: In the embodiments of this application, such as Figure 3 and Figure 4 As shown, the hinge assembly includes a driven link 9 and a driving link 11. A vertically distributed connecting plate 8 is fixed at the bottom of the inner side of the side plate 3. A pair of driven links 9 arranged in a figure-eight shape are hinged at the two corners of the outer side of the connecting plate 8. A driving link 11 is fixed at the top of each linkage shaft 10. The outer end of each driving link 11 is movably hinged to the outer end of the driven link 9 on the same side.

[0032] A frame-shaped bracket is fixed in the middle of the top surface of the base plate 1. A first hydraulic cylinder 15 with its telescopic end facing backward is installed in the opening of the frame-shaped bracket. A U-shaped lug 16 is fixed at the end of the hydraulic telescopic rod of the first hydraulic cylinder 15. A limiting pin 14 is fixed in the opening of the U-shaped lug 16. The first hydraulic cylinder 15 drives the linkage shaft 10 and the side plate 3 to move through the U-shaped lug 16 and the limiting pin 14. The first hydraulic cylinder 15 provides a strong driving force to ensure that the side plate 3 can move smoothly and accurately, adapt to pressure vessels 6 of different lengths, and maintain a uniform distribution of clamping force.

[0033] Each linkage shaft 10 has a concentrically fixed linkage gear 12 fitted in its middle, and adjacent pairs of linkage gears 12 are meshed together. A pair of extended connecting rods 13, arranged in an "X" shape, are fixed to the inner ends of a pair of adjacent active connecting rods 11 located in the U-shaped frame. Each extended connecting rod 13 has an elliptical pin hole at its outer end. A limiting pin 14 is inserted through the center of the intersection of the pair of elliptical pin holes. The linkage gears 12 mesh together to achieve synchronous rotation of the linkage shafts 10. The extended connecting rods 13, through the engagement of the limiting pins 14 and the elliptical pin holes, ensure synchronous movement of the linkage shafts 10. The design of the linkage gears 12 and extended connecting rods 13 ensures synchronous movement of the side plate 3, avoiding uneven force on the pressure vessel 6 due to unilateral movement, thus improving the accuracy and stability of the detection. This meshing structure forces the two linkage shafts 10 to rotate in opposite directions at the same angular velocity. The outer end of the active connecting rod 11 is hinged to the connecting plate 8 fixed inside the side plate 3 via the driven connecting rods 9 arranged in a figure-eight pattern. This converts the swing of the active connecting rod 11 into the horizontal linear motion of the side plate 3, ensuring that a single power source can drive the loads on both sides to achieve absolutely synchronized translation. Utilizing the forced synchronization characteristics of gear meshing, the power of a single drive source is precisely distributed to the two symmetrical side plates 3, ensuring that the movement distance and speed on both sides are completely consistent regardless of the load. This solves the problem of equipment jamming or object deflection that may occur due to inconsistent driving on both sides, achieving highly reliable synchronous adjustment.

[0034] Example 3: Based on Example 2, this example also includes: In the specific implementation process, such as Figure 5 and Figure 6As shown, the swing arm mechanism can be in the form of a parallelogram linkage mechanism. This swing arm mechanism is a parallelogram structure composed of parallel swing arms 19 and driven swing arms 20. A first connecting shaft is rotatably inserted between the top openings of the U-shaped clamping plate 17, and a pair of parallel swing arms 19 are fixed at both ends of the first connecting shaft. A second connecting shaft is rotatably inserted through the inner end of the U-shaped clamping plate 17, and a pair of driven swing arms 20 are fixed at both ends of the second connecting shaft. A U-shaped bracket 21 is fixed to the outer side of the L-shaped clamping plate 22, and the two ends of the opening of the U-shaped bracket 21 are movably hinged to the outer end of the driven swing arm 20 on the same side—the inner end of the parallel swing arm 19. During movement, the parallelogram linkage mechanism allows the connected L-shaped clamping plate 22 to maintain a basically unchanged posture of its clamping surface while swinging. This avoids large tilting of the L-shaped clamping plate 22 during clamping, ensuring that it can contact and clamp the end of the pressure vessel 6 in a stable posture perpendicular to the axis of the pressure vessel 6. This structure solves the problems of unstable clamping or insufficient contact area that may be caused by simple single-axis swing, achieving a more stable and reliable clamping effect. An L-shaped swing arm 18 is hinged inside the opening of the U-shaped clamping plate 17. The inner end of the L-shaped swing arm 18 is fixedly connected to the middle of the first connecting shaft. A third connecting shaft is fixed between the outer ends of a pair of parallel swing arms 19. The corner of the L-shaped swing arm 18 is fixedly connected to the middle of the third connecting shaft. The H-shaped connecting rod 26 drives the swing of the parallel swing arms 19 and the driven swing arm 20 through the L-shaped swing arm 18, thereby driving the clamping action of the L-shaped clamping plate 22. The design of the H-shaped connecting rod 26 and the L-shaped swing arm 18 enables the L-shaped clamping plate 22 to perform clamping and releasing operations quickly and accurately, improving detection efficiency and ensuring uniform distribution of clamping force.

[0035] A square through hole is provided in the middle of the triangular plate 5. A second hydraulic cylinder 24 with its telescopic end facing outward is installed inside the square through hole. A triangular bracket 25 is fixed to the end of the hydraulic telescopic rod of the second hydraulic cylinder 24. Each of the three ends of the triangular bracket 25 is provided with a movable H-shaped connecting rod 26. The outer end of each H-shaped connecting rod 26 is movablely hinged to the outer end of the L-shaped swing arm 18 on the same side. The second hydraulic cylinder 24 drives the swing of the L-shaped swing arm 18 through the triangular bracket 25 and the H-shaped connecting rod 26, thereby driving the clamping action of the L-shaped clamping plate 22. The design of the second hydraulic cylinder 24 enables the L-shaped clamping plate 22 to perform clamping and releasing operations quickly and accurately, improving detection efficiency and ensuring uniform distribution of clamping force.

[0036] The working principle and operation method of this invention are as follows: Step 1: Suspend the pressure vessel 6 between a pair of triangular plates 5. Adjust the spacing of the pair of side plates 3 according to the length of the pressure vessel 6. Under the driving action of the first hydraulic cylinder 15, the hydraulic telescopic rod of the first hydraulic cylinder 15 extends, driving the U-shaped lug 16 and the limit pin 14 to move backward. Under the limiting action formed by the limiting pin 14 and a pair of elliptical pin holes, the extension link 13, the corresponding active link 11 and the linkage gear 12 are driven to rotate along the linkage shaft 10 in a hinged manner. The meshing action of the linkage gear 12 drives another corresponding active link 11 to rotate in the opposite hinged manner along the linkage shaft 10. Under the joint hinge action of the active link 11 and the driven link 9, the side plate 3-triangular plate 5 is driven by the connecting plate 8 to move along a pair of fixed rods 4 toward the pressure vessel 6. When the several L-shaped clamping plates 22 have not yet contacted the pressure vessel 6, the first hydraulic cylinder 15 stops working. Step 2: Under the driving action of a pair of second hydraulic cylinders 24, the hydraulic telescopic rod of the second hydraulic cylinder 24 extends, driving the triangular bracket 25 and H-shaped connecting rod 26 to move outward away from the triangular plate 5. Under the hinge action of the H-shaped connecting rod 26 and the L-shaped swing arm 18, the L-shaped swing arm 18 is driven to rotate along the first connecting shaft, and through the first connecting shaft and the third connecting shaft, a pair of parallel swing arms 19 are driven to rotate synchronously. Since the parallel swing arm 19 and the driven swing arm 20 are in a parallelogram hinged state, the driven swing arm 20 is driven to rotate synchronously. Then, through the U-shaped bracket 21, the L-shaped clamping plate 22 is driven to swing inward and abut against the pressure vessel 6. Since the inner side wall of the L-shaped clamping plate 22 is an inclined inward arc surface, the inner side wall of the L-shaped clamping plate 22 is clamped on the end face of the pressure vessel 6. Step 3: Restart the first hydraulic cylinder 15. As the hydraulic telescopic rod of the first hydraulic cylinder 15 continues to extend, the pair of triangular plates 5 continue to move towards the pressure vessel 6, and drive the pressure sensor 23 to press against the pressure vessel 6. As the pressure vessel 6 is continuously clamped, the pressure sensor 23 contacts the pressure vessel 6, senses the pressure and converts it into a corresponding electrical signal. By measuring these electrical signals, the pressure value is determined, thereby completing the pressure test operation on both ends of the pressure vessel 6.

[0037] This invention avoids skewing during adjustment through a linkage and gear synchronization mechanism, ensures stable clamping posture through a parallelogram swing arm mechanism, increases the contact area and provides self-centering through an inclined inward arc surface, and ensures high uniformity and stable contact between the sensing point and the force application point through the integrated pressure sensor. Through the coordinated operation of these components, precise clamping and pressure testing of the pressure vessel 6 are achieved, ensuring the stability and accuracy of the testing process. Simultaneously, the hydraulic drive and swing arm mechanism make operation more flexible and efficient, suitable for testing pressure vessels 6 of different specifications.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pressure-bearing equipment detection device, comprising a base plate, characterized in that: It also includes a fixing plate, which is fixed to both sides of the top surface of the base plate; Side plates, a pair symmetrically distributed, are slidably disposed between the fixed plates; A synchronous adjustment mechanism is used to drive the side plates to move synchronously towards or away from each other in order to adjust the distance between them; A clamping assembly is mounted on the side plate. The clamping assembly includes: at least one L-shaped clamping plate; and at least one swing arm mechanism corresponding to the at least one L-shaped clamping plate. Each swing arm mechanism is used to drive its corresponding L-shaped clamping plate to swing in order to clamp or release the pressure vessel. A pressure sensor is disposed on the L-shaped card plate, with the detection end of the pressure sensor facing the inside of the L-shaped card plate.

2. The adjustable pressure equipment detection device according to claim 1, characterized in that: The synchronous adjustment mechanism includes two pairs of linkage shafts rotatably inserted in the center of the base plate, each pair of linkage shafts being connected to a side plate on the same side via a hinge assembly; a triangular plate is fixed on the top surface of each side plate, and a pair of suspended L-shaped clamping plates are provided at the three ends of the inner side of each triangular plate, the inner side wall of each L-shaped clamping plate being obliquely inwardly curved, and a U-shaped clamping plate is fixed at the three ends of each triangular plate, each U-shaped clamping plate being connected to a corresponding pair of L-shaped clamping plates via a swing arm mechanism; a pressure vessel is placed between a pair of side plates and suspended laterally, the inner side of each pair of L-shaped clamping plates being limited and engaged with the corresponding end of the pressure vessel, and an elliptical groove is opened on the inner side of each L-shaped clamping plate, a pressure sensor is installed inside each elliptical groove, and the detection end of each pressure sensor is abutting against the corresponding side surface of the pressure vessel.

3. The adjustable pressure equipment detection device according to claim 1, characterized in that: Each side plate has a fixing hole at the two corners at the bottom. A pair of parallel fixing rods are fixed between the tops of a pair of fixing plates. Each fixing rod slides through the corresponding fixing hole. A pair of reinforcing plates are fixed to the top edge of each side plate. Each pair of reinforcing plates is fixed to the bottom edge of the triangular plate on the same side.

4. The adjustable pressure equipment detection device according to claim 2, characterized in that: The hinge assembly includes a driven link and a driving link. A vertically distributed connecting plate is fixed to the bottom of the inner side of the side plate. A pair of driven links arranged in a figure-eight shape are hinged at the two corners of the outer side of the connecting plate. A driving link is fixed to the top of each linkage shaft. The outer end of each driving link is movably hinged to the outer end of the driven link on the same side.

5. The adjustable pressure equipment detection device according to claim 2, characterized in that: A frame-shaped bracket is fixedly provided in the middle of the top surface of the base plate. A first hydraulic cylinder with its telescopic end facing backward is installed in the opening of the frame-shaped bracket. A U-shaped lug is fixedly provided at the end of the hydraulic telescopic rod of the first hydraulic cylinder. A limiting pin is fixedly provided in the opening of the U-shaped lug.

6. The adjustable pressure equipment detection device according to claim 2, characterized in that: Each of the linkage shafts is fitted with a concentric linkage gear in the middle, and adjacent pairs of linkage gears are meshed together. A pair of extended linkages arranged in an "X" shape are fixed at the inner end of a pair of adjacent active linkages in the U-shaped frame. Each of the extended linkages has an elliptical pin hole at its outer end. The middle of the limiting pin is inserted through the center of the intersection of the pair of elliptical pin holes.

7. The adjustable pressure equipment detection device according to claim 1, characterized in that: The swing arm mechanism includes a parallel swing arm and a driven swing arm. A first connecting shaft is rotatably inserted between the top openings of the U-shaped plate and is distributed through the shaft. A pair of parallel swing arms are fixed at both ends of the first connecting shaft. A second connecting shaft is rotatably inserted at the inner end of the U-shaped plate and is distributed through the shaft. A pair of driven swing arms are fixed at both ends of the second connecting shaft. A U-shaped bracket is fixed on the outer side of the L-shaped plate, and the two ends of the opening of the U-shaped bracket are movably hinged to the outer end of the driven swing arm and the inner end of the parallel swing arm on the same side.

8. The adjustable pressure equipment detection device according to claim 7, characterized in that: An L-shaped swing arm is hinged inside the opening of the U-shaped plate. The inner end of the L-shaped swing arm is fixedly connected to the middle of the first connecting shaft. A third connecting shaft is fixed between the outer ends of a pair of parallel swing arms. The corner of the L-shaped swing arm is fixedly connected to the middle of the third connecting shaft.

9. The adjustable pressure equipment detection device according to claim 3, characterized in that: A square through hole is provided in the middle of the triangular plate. A second hydraulic cylinder with its telescopic end facing outward is installed inside the square through hole. A triangular bracket is fixed to the end of the hydraulic telescopic rod of the second hydraulic cylinder. Each of the three ends of the triangular bracket is provided with a movable H-shaped connecting rod. The outer end of each H-shaped connecting rod is movablely hinged to the outer end of the L-shaped swing arm on the same side.

10. A testing method using an adjustable pressure equipment testing device as described in any one of claims 1-9, characterized in that, Includes the following steps: Spacing adjustment: Drive the synchronous adjustment mechanism to move the pair of side plates to a preset spacing; Swing clamping: Drive the swing arm mechanism to swing the L-shaped clamping plate inward to clamp the pressure vessel; Pressure detection: The synchronous adjustment mechanism is driven to move a pair of side plates toward each other to apply a detection pressure to the pressure vessel through the L-shaped clamping plate, which is then detected by the pressure sensor.

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