CN117949311A - Pressure vessel bearing performance detection equipment - Google Patents

Abstract

The present invention relates to the technical field of safety detection equipment, and specifically to a pressure vessel pressure bearing performance detection equipment, comprising a base plate, a placing rack is symmetrically installed on the top of the base plate, the placing rack is an arc-shaped structure and the concave surface thereof is symmetrically provided with T-slots, a lifting unit is slidably connected inside the T-slot, and the lifting unit is installed above the base plate, linear electric sliders are installed on both sides of the base plate, and a fixing unit is installed above the fixed end of each electric telescopic plate; the detection unit can move semi-circularly along the splicing weld of the pressure vessel, detect the splicing weld of the pressure vessel, realize automatic and all-round detection, and can also conveniently detect larger pressure vessels, and at the same time, the stubborn welding slag and other debris remaining at the weld of the pressure vessel are cleaned by knocking and scraping, so as to avoid the welding slag and other debris remaining in the welding seam of the pressure vessel affecting its detection accuracy.

Description

A pressure vessel pressure bearing performance testing equipment

Technical Field

The invention relates to the technical field of safety detection equipment, and in particular to a pressure vessel pressure bearing performance detection device.

Background technique

Pressure vessels refer to closed equipment that contains gas or liquid and bears a certain pressure. Pressure vessels are also an important part of special pressure-bearing equipment. During use, pressure vessels can bear explosive, high-temperature, low-temperature, high-pressure, corrosive, highly toxic and other gas or liquid media. Their safe operation involves the safety of people's lives and property, so they need to be tested for their pressure-bearing performance during use.

In our daily life, spliced pressure vessels are often used. When multiple pressure vessels are spliced together by welding to form a larger pressure vessel, the spliced parts are welded and fixed. For spliced pressure vessels that are used for a long time, their spliced welds will age and may have pits, bulges, or even corrosion and cracking, which will affect the detection of the pressure performance of the pressure vessel and even cause serious safety problems. Therefore, the quality of the pressure vessel welding seam is an important component of measuring its pressure performance.

In order to improve the accuracy of pressure vessel pressure bearing performance testing, it is necessary to test the pressure bearing performance of pressure vessels with spliced welds. However, the existing pressure vessels with welds are mostly tested by appearance inspection or special detectors. Since the detector is manually assisted, there is a possibility of inadequate detection, and the welding slag and other debris remaining in the pressure vessel welding seam will affect its detection accuracy. In addition, it is also inconvenient to test larger pressure vessels.

Summary of the invention

In order to solve the above technical problems, the present invention adopts the following technical scheme: a pressure vessel pressure bearing performance testing device, comprising a base plate, a placing rack is symmetrically installed front and back above the base plate, the placing rack is an arc-shaped structure and the concave surface thereof is symmetrically provided with T-slots, the T-slot passes through the placing rack, a lifting unit is slidably connected inside the T-slot, and the lifting unit is installed above the base plate, linear electric sliders are slidably installed on the left and right sides of the base plate, each linear electric slider is connected to the telescopic end of an electric telescopic plate, a fixing unit is installed above the fixed end of each electric telescopic plate, detection units are installed on opposite sides of the two fixing units, and the detection units are located between the two placing racks.

The lifting unit includes a telescopic cylinder fixedly installed on the upper surface of the base plate, a support plate is installed on the telescopic end of the telescopic cylinder, moving columns are symmetrically installed on the left and right sides of the upper surface of the support plate, the moving columns are slidably connected inside the T-slot, and a connecting block is installed above the moving columns.

The fixing unit includes a position plate installed above the fixed end of the electric telescopic plate. An arc frame is installed on the side of the position plate close to the bottom plate through a support column. The arc frame is a semicircular structure and is placed vertically. The arc frames on the two fixing units are spliced to form a closed ring structure.

The detection unit includes an arc-shaped electric slider slidably connected in the arc-shaped frame, a connecting plate is installed on the opposite side of the arc-shaped electric slider through a moving cylinder, and an arc-shaped surface detection frame and a cleaning component are installed in sequence from front to back on the other side of the connecting plate. A detection probe is arranged inside the arc-shaped surface detection frame, and the detection probe is used to detect the pressure-bearing performance of the surface of the pressure vessel.

Preferably, the detection probe is located in the middle of the side of the arc detection frame away from the arc frame, and the detection probe is installed inside the arc detection frame through a top extension cylinder, and multiple groups of balls are evenly arranged on the side of the arc detection frame away from the arc frame.

Preferably, the cleaning assembly includes a scraper installed on the side of the connecting plate and arranged up and down, a fixed block is arranged between the two scrapers, the fixed block is installed on the side of the connecting plate, an L-shaped groove is opened inside the fixed block, the knocking block is slidably connected in the L-shaped groove through a reset spring, a toggle plate is vertically installed on the front side of the knocking block, a rotating motor is installed on the front end of the fixed block through a motor sleeve, and a cam that drives the toggle plate to move left and right is installed on the output end of the rotating motor.

Preferably, the end of the scraper away from the connecting plate is a comb-tooth tip structure, and the comb-tooth tip structures on the two scrapers are arranged alternately, and the end of the scraper away from the connecting plate is arranged obliquely toward the axis of the arc frame.

Preferably, a square groove is provided on the right side of the knocking block, and the protrusion is slidably connected inside the square groove via a compression spring.

Preferably, arc-shaped grooves penetrating the knocking block are symmetrically arranged on the front and rear sides of the square groove, an L-shaped scraper is slidably connected inside the arc-shaped groove, an extrusion block is arranged at one end of the L-shaped scraper located in the square groove, the extrusion block and the protrusion cooperate with each other, and the protrusion contracts under force to drive the extrusion block to move to the side away from the square groove, thereby driving the L-shaped scraper to move.

Preferably, the top of the connecting block is connected to a buckle in a hinged manner, the upper end of the buckle is an arc-shaped surface, and a fitting anti-slip layer is provided on the arc-shaped surface of the buckle.

Preferably, a movable groove is opened on the side of the position plate close to the base plate, and locking screw holes are evenly arranged on both sides of the movable groove along its vertical direction. The support column is slidably connected in the movable groove, the support column is a cross-shaped structure, and its longitudinal section is locked in the locking screw hole by a locking bolt.

The beneficial effects of the present invention are as follows: 1. The present invention detects the pressure-bearing performance of the spliced welds of the pressure vessel through the detection unit, and the arc-shaped electric sliders on both sides can move semi-circularly along the spliced welds of the pressure vessel, driving the arc surface detection frame to detect the spliced welds of the pressure vessel, thereby realizing automated, all-round and convenient detection. At the same time, the cylinder telescopic effect is adopted to enable the arc surface detection frame to adapt to tank-shaped pressure vessels of different sizes, especially for larger pressure vessels, to conveniently detect their pressure-bearing performance, thereby expanding the scope of application of the detection device.

2. The present invention cleans the welds at the joints of the pressure vessel by means of a cleaning component, and adopts a scraper to move semi-circularly along the weld position of the pressure vessel, and the comb-tooth pointed structure of the scraper cyclically scrapes away foreign matter on the surface of the weld at the joint of the pressure vessel along the motion trajectory, and at the same time, the reciprocating toggling of the knocking block by the toggle plate and the continuous movement of the protrusion under the contraction and expansion of the compression spring jointly hammer the weld position of the pressure vessel, and at the same time, the extrusion block on the L-shaped scraper is lifted up by the protrusion, and the L-shaped scraper moves and performs secondary scraping of debris at the weld along the motion trajectory perpendicular to the arc-shaped electric slider, and can scrape away dead angles that the scraper cannot reach along the motion trajectory, and stubborn debris such as welding slag remaining in the weld of the pressure vessel will be further knocked off and scraped away, effectively preventing the welding slag and other debris remaining in the weld of the pressure vessel from affecting its detection accuracy, thereby improving the accuracy during detection.

3. The present invention positions and places pressure vessels of different sizes by means of a lifting unit, and at the same time, an anti-slip layer is attached to the surface of the unit so that the buckle can fit the side wall of the pressure vessel more closely, thereby ensuring the stability of the inspection while inspecting the pressure vessel, thereby improving the applicability of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention is further described below in conjunction with the accompanying drawings and embodiments.

FIG. 1 is a schematic diagram of the three-dimensional structure of the present invention.

FIG. 2 is a schematic diagram of the three-dimensional structure of the detection unit of the present invention.

FIG. 3 is a schematic diagram of the three-dimensional structure of the cleaning component of the present invention.

FIG. 4 is a cross-sectional view of a portion of the cleaning assembly of the present invention.

FIG. 5 is a front view of the arc surface detection frame of the present invention.

Fig. 6 is a cross-sectional view taken along the line A-A of Fig. 5 .

FIG. 7 is a cross-sectional view of the bottom plate, the linear electric slider and the electric telescopic plate of the present invention.

FIG. 8 is a cross-sectional view of the placement rack and the lifting unit of the present invention.

FIG. 9 is a three-dimensional structural diagram of the scraper of the present invention.

Figure numerals: 1, bottom plate; 2, placement frame; 21, T-slot; 3, lifting unit; 31, telescopic cylinder; 32, support plate; 33, moving column; 34, connecting block; 35, buckle; 4, linear electric slider; 5, electric telescopic plate; 6, fixing unit; 61, position plate; 62, support column; 63, arc frame; 64, moving slot; 65, locking screw hole; 66, locking bolt; 7, detection unit; 71, arc electric slider; 72, moving cylinder ; 73, connecting plate; 74, arc surface detection frame; 75, cleaning assembly; 751, scraper; 753, L-shaped groove; 754, knocking block; 755, reset spring; 756, toggle plate; 757, rotating motor; 758, cam; 76, detection probe; 77, extension cylinder; 78, ball; 79, fixing block; 791, square groove; 792, bump; 793, compression spring; 794, arc groove; 795, L-shaped scraper; 796, extrusion block.

Detailed ways

The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. If no specific techniques or conditions are specified in the embodiments, the techniques or conditions described in the literature in the art or the product instructions shall be followed.

Referring to Figures 1, 7 and 8, a pressure vessel pressure bearing performance testing equipment includes a base plate 1, a placement rack 2 is symmetrically installed on the top of the base plate 1, the placement rack 2 is an arc-shaped structure and the concave surface thereof is symmetrically opened with T-slots 21, the T-slot 21 runs through the placement rack 2, and a lifting unit 3 is slidably connected inside the T-slot 21, and the lifting unit 3 is installed above the base plate 1, linear electric sliders 4 are slidably installed on the left and right sides of the base plate 1, each linear electric slider 4 is connected to the telescopic end of an electric telescopic plate 5, a fixing unit 6 is installed above the fixed end of each electric telescopic plate 5, and detection units 7 are installed on opposite sides of the two fixing units 6, and the detection units 7 are located between the two placement racks 2.

The present invention is used to test the pressure bearing performance of a pressure vessel, and while testing the pressure vessel, the present invention can hammer and scrape off foreign matter such as welding slag on the weld at the joint of the pressure vessel, thereby effectively improving the accuracy of the test during the test. The lifting unit 3 is used to position and place pressure vessels of different sizes, and the stability of the test can be ensured when the pressure vessel is tested. The fixing unit 6 adjusts the height of the testing unit 7 according to the pressure vessels of different models, and under the action of the linear electric slider 4 and the electric telescopic plate 5, the fixing units 6 on the left and right sides can quickly locate the relative position of the weld, merge the testing units 7 on both sides, and surround the outside of the pressure vessel so that the testing unit 7 can test the pressure vessel.

Referring to Figures 1 and 8, the lifting unit 3 includes a telescopic cylinder 31 fixedly mounted on the upper surface of the base plate 1, a support plate 32 is mounted above the telescopic end of the telescopic cylinder 31, and moving columns 33 are symmetrically mounted on the left and right sides of the upper surface of the support plate 32. The moving columns 33 are slidably connected inside the T-slot 21, and a connecting block 34 is mounted above the moving column 33. The top of the connecting block 34 is connected to a buckle 35 in a hinged manner. The upper end of the buckle 35 is an arc-shaped surface, and the arc-shaped surface of the buckle 35 is provided with a fitting anti-slip layer.

The present invention positions and places the pressure vessel to be inspected by lifting the unit 3, and at the same time, the anti-slip layer is attached to the surface of the unit 3 to make the buckle 35 fit the side wall of the pressure vessel more closely, thereby ensuring the stability of the inspection when inspecting the pressure vessel, thereby improving the applicability of the present invention.

Specifically, the tank-shaped pressure vessel to be inspected is placed on the arc-shaped concave surface of the placement rack 2, and the telescopic cylinder 31 is started. Its extension amount is changed according to the model of the pressure vessel, driving the support plate 32, the movable column 33 and the connecting block 34 to move synchronously. The movable column 33 slides vertically along the T-slot 21 in the placement rack 2, so that the arc-shaped surface of the upper end of the buckle 35 is tightly attached to the side wall of the tank-shaped pressure vessel, thereby ensuring stability during inspection.

Referring to Figures 1 and 7, the fixed unit 6 includes a position plate 61 installed above the fixed end of the electric telescopic plate 5. The side of the position plate 61 close to the base plate 1 is equipped with an arc frame 63 through a support column 62. The arc frame 63 is a semicircular structure and is placed vertically. The arc frames 63 on the two fixed units 6 are spliced to form a closed ring structure; a movable groove 64 is provided on the side of the position plate 61 close to the base plate 1, and locking screw holes 65 are evenly provided on both sides of the movable groove 64 along its vertical direction. The support column 62 is slidably connected in the movable groove 64. The support column 62 is a cross-shaped structure, and its longitudinal section is locked in the locking screw hole 65 by a locking bolt 66.

The present invention adjusts the height of the detection unit 7 according to different types of pressure vessels through the fixing unit 6, and under the action of the electric telescopic plate 5, the arc frames 63 on the fixing units 6 on the left and right sides can be combined to form an annular structure to surround the pressure vessel, so that the detection unit 7 can move along the arc frame 63 while performing all-round detection of the arc-shaped outer side wall of the pressure vessel, thereby expanding the detection area, improving the practicability of the present invention, and making the detection result more accurate and comprehensive.

Specifically, start the electric telescopic plate 5, and move the position plates 61 on both sides to appropriate positions, adjust the position according to the model of the tank-shaped pressure vessel to be inspected, slide the support column 62 along the moving groove 64, and select a suitable height position, and lock the support column 62 in the locking screw hole 65 with the locking bolt 66. At this time, the arc frames 63 on the two fixing units 6 are spliced to form a closed annular structure, so that the detection unit 7 can perform semi-circle rotation detection along the closed arc frame 63.

Referring to Figures 2 to 6, the detection unit 7 includes an arc-shaped electric slider 71 slidably connected in the arc frame 63, and a connecting plate 73 is installed on the opposite surface of the arc-shaped electric slider 71 through a moving cylinder 72. A curved surface detection frame 74 and a cleaning assembly 75 are installed on the opposite surface of the connecting plate 73 in sequence from front to back. A detection probe 76 is arranged inside the curved surface detection frame 74. The detection probe 76 is used to detect the pressure-bearing performance of the surface of the pressure vessel. The detection probe 76 is located in the middle of the side of the curved surface detection frame 74 away from the curved frame 63, and the detection probe 76 is installed inside the curved surface detection frame 74 through a top extension cylinder 77. A plurality of groups of balls 78 are evenly arranged on the side of the curved surface detection frame 74 away from the curved frame 63.

The present invention detects the pressure-bearing performance of the weld position at the joint of the pressure vessel through the detection unit 7. The arc surface structure of the arc surface detection frame 74 can always fit the outer wall of the pressure vessel during the detection process. The ball 78 can roll along the outer wall of the pressure vessel, which is convenient for the detection probe 76 to detect the pressure vessel, making the detection process more flexible.

Specifically, after the pressure vessel to be inspected is properly placed, the arc frames 63 on the left and right sides are spliced to form a closed ring structure, and the movable cylinder 72 is started. The extension amount of the movable cylinder 72 is adjusted according to the model of the pressure vessel, so that the concave surface on the arc surface detection frame 74 is close to the side of the pressure vessel weld. The ball 78 on the concave surface of the arc surface detection frame 74 can roll along the side of the pressure vessel, and the extension cylinder 77 controls the distance between the detection probe 76 and the contact surface of the pressure vessel weld.

Referring to Fig. 2 to Fig. 6 and Fig. 9, the cleaning assembly 75 includes a scraper 751 installed on the side of the connecting plate 73 and arranged up and down, the end of the scraper 751 away from the connecting plate 73 is a comb-tooth tip structure, and the comb-tooth tip structures on the two scrapers 751 are arranged alternately, and the end of the scraper 751 away from the connecting plate 73 is arranged obliquely toward the axis direction of the arc frame 63. There is a fixed block 79 between the two scrapers 751, the fixed block 79 is installed on the side of the connecting plate 73, an L-shaped groove 753 is provided inside the fixed block 79, a knocking block 754 is slidably connected in the L-shaped groove 753 through a return spring 755, a toggle plate 756 is vertically installed on the front side of the knocking block 754, a square groove 791 is provided on the right side of the knocking block 754, and a protrusion 792 is slidably connected inside the square groove 791 through a compression spring 793. A rotating motor 757 is installed at the front end of the fixed block 79 through a motor sleeve, and a cam 758 is installed at the output end of the rotating motor 757 to drive the toggle plate 756 to move left and right.

The front and rear sides of the square groove 791 are symmetrically provided with arc grooves 794 that penetrate the knocking block 754, and are slidably connected with an L-shaped scraper 795. One end of the L-shaped scraper 795 located in the square groove 791 has an extrusion block 796, and the extrusion block 796 cooperates with the protrusion 792. The protrusion 792 is forced to contract and drives the extrusion block 796 to move to the side away from the square groove 791, thereby driving the L-shaped scraper 795 to move in the square groove 791.

The present invention uses a cleaning component 75 to clean the welds at the joints of the pressure vessel. The scraper 751 moves semi-circularly along the motion trajectory of the arc-shaped electric slider 71 to cyclically scrape away foreign matter on the surface of the welds at the joints of the pressure vessel. The toggle plate 756 tosses the knocking block 754 back and forth, and the protrusion 792 moves continuously under the contraction and expansion of the compression spring 793. Together, the welding slag and other debris on the surface of the weld of the pressure vessel are continuously hammered. The L-shaped scraper 795 moves and scrapes away debris at the welds for the second time along the motion trajectory perpendicular to the arc-shaped electric slider 71. The dead corners that the scraper 751 cannot reach can be scraped and cleaned, thereby improving the cleanliness during detection, effectively preventing the welding slag and other debris remaining in the welds of the pressure vessel from affecting its detection accuracy, and improving the detection efficiency and accuracy during detection.

Specifically, the arc-shaped electric slider 71 is started, and the arc-shaped electric sliders 71 on both sides slide on the closed annular structure formed by the arc frame 63, driving the comb-tooth tip structure of the scraper 751 to move along the semi-circular direction of the motion trajectory to cyclically scrape away foreign matter on the surface of the weld at the joint of the pressure vessel, and the rotating motor 757 is started to drive the cam 758 to rotate. The toggle plate 756 is continuously toggled away from the axial direction of the arc frame 63 under the rotation of the cam 758, and drives the knocking block 754 to slide in the L-shaped groove 753 away from the axial direction of the arc frame 63, and the reset spring 755 is compressed. When the cam 758 rotates to no longer contact the toggle plate 756, the reset spring 755 quickly returns to its original state, and the toggle plate 756 and the knocking block 754 move toward the arc frame 6 3, the striking block 754 stretches and continuously hammers the foreign matter at the weld position of the pressure vessel. Under the elastic expansion and contraction of the compression spring 793 itself, the protrusion 792 continuously extends out of the square groove 791 to hammer the weld at the joint of the pressure vessel again, so that the foreign matter existing on the weld of the pressure vessel due to aging is knocked off and scraped off. The extrusion blocks 796 on both sides of the square groove 791 are driven to move to the side away from the square groove 791 under the force contraction of the protrusion 792, thereby driving the L-shaped scraper 795 to move and perform secondary scraping on the debris at the weld along the motion trajectory perpendicular to the arc-shaped electric slider 71. The dead angle position that the scraper 751 cannot clean can be scraped for the second time, so as to realize the back and forth scraping cleaning of the weld on the pressure vessel.

In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims (8)

1. A pressure vessel pressure bearing performance testing device, comprising a base plate (1), a placing frame (2) is symmetrically installed on the top of the base plate (1), characterized in that the placing frame (2) is an arc-shaped structure and a T-shaped groove (21) is symmetrically opened on the concave surface thereof, the T-shaped groove (21) passes through the placing frame (2), a lifting unit (3) is slidably connected inside the T-shaped groove (21), and the lifting unit (3) is installed above the base plate (1), linear electric sliders (4) are slidably installed on both sides of the base plate (1), each linear electric slider (4) is connected to the telescopic end of an electric telescopic plate (5), a fixing unit (6) is installed above the fixed end of each electric telescopic plate (5), and detection units (7) are installed on opposite sides of the two fixing units (6), and the detection units (7) are located between the two placing frames (2); The lifting unit (3) comprises a telescopic cylinder (31) fixedly mounted on the upper surface of the base plate (1); a support plate (32) is mounted on the telescopic end of the telescopic cylinder (31); movable columns (33) are symmetrically mounted on the left and right sides of the upper surface of the support plate (32); the movable columns (33) are slidably connected inside the T-shaped groove (21); and a connecting block (34) is mounted above the movable columns (33); The fixing unit (6) comprises a position plate (61) installed above the fixing end of the electric telescopic plate (5); an arc frame (63) is installed on the side of the position plate (61) close to the bottom plate (1) through a support column (62); the arc frame (63) is a semicircular structure and is placed vertically; the arc frames (63) on the two fixing units (6) are spliced to form a closed ring structure; The detection unit (7) comprises an arc-shaped electric slider (71) slidably connected in the arc-shaped frame (63); a connecting plate (73) is installed on the opposite side of the arc-shaped electric slider (71) via a moving cylinder (72); a curved surface detection frame (74) and a cleaning assembly (75) are installed on the other side of the connecting plate (73) in sequence from front to back; a detection probe (76) is arranged inside the curved surface detection frame (74); and the detection probe (76) is used to detect the pressure bearing performance of the surface of the pressure container. 2. A pressure vessel pressure bearing performance testing device according to claim 1, characterized in that the detection probe (76) is located in the middle of the side of the arc surface detection frame (74) away from the arc frame (63), and the detection probe (76) is installed inside the arc surface detection frame (74) through a top extension cylinder (77), and a plurality of groups of balls (78) are evenly arranged on the side of the arc surface detection frame (74) away from the arc frame (63). 3. A pressure vessel pressure bearing performance testing device according to claim 1, characterized in that the cleaning component (75) includes a scraper (751) installed on the side of the connecting plate (73) and arranged up and down, a fixed block (79) is arranged between the two scrapers (751), the fixed block (79) is installed on the side of the connecting plate (73), an L-shaped groove (753) is opened inside the fixed block (79), the knocking block (754) is slidably connected in the L-shaped groove (753) through a return spring (755), and a toggle plate (756) is vertically installed on the front side of the knocking block (754); a rotating motor (757) is installed at the front end of the fixed block (79) through a motor sleeve, and a cam (758) is installed at the output end of the rotating motor (757) for driving the toggle plate (756) to move left and right. 4. A pressure vessel pressure bearing performance testing equipment according to claim 3, characterized in that the end of the scraper (751) away from the connecting plate (73) is a comb-tooth tip structure, and the comb-tooth tip structures on the two scrapers (751) are arranged alternately, and the end of the scraper (751) away from the connecting plate (73) is arranged obliquely toward the axial direction of the arc frame (63). 5. A pressure vessel pressure bearing performance testing device according to claim 3, characterized in that a square groove (791) is opened on the right side of the knocking block (754), and the protrusion (792) is slidably connected inside the square groove (791) through a compression spring (793). 6. A pressure vessel pressure bearing performance testing device according to claim 5, characterized in that arc grooves (794) penetrating the knocking block (754) are symmetrically arranged on the front and rear sides of the square groove (791), and an L-shaped scraper (795) is slidably connected inside the arc groove (794), and an extrusion block (796) is arranged at one end of the L-shaped scraper (795) located in the square groove (791), and the extrusion block (796) cooperates with the protrusion (792), and the protrusion (792) is forced to shrink and drive the extrusion block (796) to move to the side away from the square groove (791), thereby driving the L-shaped scraper (795) to move. 7. A pressure vessel pressure bearing performance testing device according to claim 1, characterized in that the top of the connecting block (34) is connected to a buckle (35) in a hinged manner, the upper end of the buckle (35) is an arc-shaped surface, and a fitting anti-slip layer is provided on the arc-shaped surface of the buckle (35). 8. A pressure vessel pressure bearing performance testing device according to claim 1, characterized in that a movable groove (64) is opened on the side of the position plate (61) close to the bottom plate (1), and locking screw holes (65) are evenly arranged on both sides of the movable groove (64) along its vertical direction, and the support column (62) is slidably connected in the movable groove (64), the support column (62) is a cross-shaped structure, and its longitudinal section is locked in the locking screw hole (65) by a locking bolt (66).