Measuring and detecting instrument for inner cavity of pressure container

Abstract

The invention discloses a pressure vessel inner cavity measuring and detecting instrument, and belongs to the technical field of pressure vessel detecting equipment, the pressure vessel inner cavity measuring and detecting instrument comprises a pressure vessel body and a detecting equipment body, and the detecting equipment body comprises a shell and a measuring assembly used for measuring the diameter and roundness of the inner wall of the pressure vessel body. The measuring assembly comprises an adjusting seat used for measuring the inner diameter and folding rod pieces installed on the outer wall of the adjusting seat in a circumferential arrangement mode, triggering assemblies used for making extrusion contact with the inner wall of the pressure container body are installed at the tail ends of the folding rod pieces, and an adjusting assembly used for driving the folding rod pieces to be unfolded is installed in the adjusting seat. The measuring assembly further comprises an installation box installed at the axis position of one end of the adjusting base and used for measuring the roundness of the pressure vessel body. Through arrangement of the measuring assembly, the response assembly and the trigger assembly, the inner diameter and the roundness of the inner wall of the pressure vessel body can be measured, the positions and the deformation quantity of the concave positions and the convex positions of the inner wall of the pressure vessel body can be accurately measured, and maintenance by workers is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of pressure vessel detection equipment, in particular to a pressure vessel inner cavity measurement and detection instrument. Background Art

[0002] A pressure vessel refers to a closed container that bears pressure loads and contains gas or liquid. In petrochemical and other mechanical equipment, pressure vessels are an indispensable device. Their quality and performance are directly related to the benefits and development of the enterprise. Therefore, the manufacturing and production inspection of pressure vessels should be given high attention.

[0003] However, current pressure vessel inner cavity detection equipment has certain limitations, mainly focusing on the measurement function of the inner diameter size, but lacking the ability to accurately detect the roundness parameters of the container. When the container wall surface is locally concave or convex, this geometric defect will destroy the uniformity of the container structure, resulting in an imbalance in stress distribution, and ultimately significantly reducing the pressure-bearing performance of the container and the safety of medium storage. Therefore, the present invention provides a pressure vessel inner cavity measurement and detection instrument to solve the above-mentioned problems. Summary of the invention

[0004] The object of the present invention is to provide a pressure vessel inner cavity measurement and detection instrument to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A pressure vessel inner cavity measuring and testing instrument comprises a pressure vessel body and a testing device body, wherein the testing device body comprises an outer shell and a measuring component for measuring the diameter and roundness of the inner wall of the pressure vessel body, wherein the measuring component comprises an adjusting seat for measuring the inner diameter and folding rods arranged in a circle and mounted on the outer wall of the adjusting seat, wherein a triggering component for extruding and contacting the inner wall of the pressure vessel body is mounted at the tail end of the folding rod, wherein an adjusting component for driving the folding rod to unfold is mounted in the adjusting seat, wherein the measuring component further comprises an installation box for measuring the roundness of the pressure vessel body mounted at an axial position at one end of the adjusting seat, wherein a response component for driving current change through the triggering component is mounted in the installation box; wherein a main control box for control is mounted in the outer shell, wherein a first connecting rod for connection is fixedly connected to one end of the main control box, wherein a steering component for assisting the steering of the measuring component is mounted at the end of the first connecting rod away from the outer shell, wherein a control component for adjusting the steering component is mounted on the outer wall of the first connecting rod close to the outer shell, wherein a driving component for driving the measuring component to rotate and extend is mounted on the steering component, wherein the driving component is mounted on the end of the installation box away from the adjusting seat by bolts.

[0006] As a further solution of the present invention, the adjusting component includes a servo motor, a driving gear, a connecting shaft and a third pulley. The servo motor is installed at one end of the adjusting seat away from the installation box. The driving gear is rotatably connected to the inner wall of the adjusting seat and installed at the output end of the servo motor. The connecting shafts are rotatably connected to the inner wall of the adjusting seat in a circumferential arrangement. The outer wall of the connecting shaft is installed with driven gears and fifth rotating disks. The driven gears are engaged with the outer wall of the driving gear. The folding rod is formed into an integral structure by rotating connection of multiple folding plates end to end. Both ends of the folding plate are fixedly connected with rotating pins. The rotating pins are rotatably connected to the inner wall of another folding plate. Both ends of the outer wall of the rotating pin are fixedly connected with sixth rotating disks. The third pulley is installed on the outer walls of the sixth rotating disks at both ends of the folding plate, and the third pulley is installed on the outer walls of the fifth rotating disk and the sixth rotating disk on the folding plate close to the adjusting seat side.

[0007] As a further solution of the present invention, the triggering component includes a trigger seat, a first piston plate and a ball. The trigger seat is fixedly connected to the outer wall of one end of the folding rod away from the adjusting seat. The first piston plate is slidably connected to the inner wall of the trigger seat. The top axis position of the first piston plate is fixedly connected with a second connecting rod. The ball is rotatably connected to the inner wall of the second connecting rod. The bottom end of the trigger seat is fixedly connected with a water pipe for water delivery. The driving gear passes through the folding rod and the adjusting seat and extends to the inner wall of the installation box.

[0008] As a further solution of the present invention, the response component includes a positive plate, a negative plate and an adjusting pipe. The inner wall of the installation box is fixedly connected with a water storage tank for storing aqueous solution. The water pipe is communicated with the inner wall of the water storage tank. The positive plate is installed on one side of the installation box away from the water storage tank. One end of the positive plate is installed with a telescopic member. The negative plate is fixedly connected to the other end of the telescopic member. The adjusting pipe is communicated with the water storage tank. A second piston plate is slidably connected to the inner wall of the adjusting pipe. An installation plate is installed on the outer wall of the water storage tank at the bottom of the adjusting pipe. A heating pipe for heating is installed at the position of the top outer wall of the installation plate at the bottom of the adjusting pipe.

[0009] As a further solution of the present invention, the steering component includes a rotating seat and a connecting rotating block. The rotating seat is fixedly connected to the axis position of one end of the first connecting rod away from the housing. The first rotating rod is rotatably connected to the inner wall of the rotating seat. The connecting rotating blocks are fixedly connected to both ends of the first rotating rod. The middle position of the outer wall of the first rotating rod is fixedly connected with a first rotating disk. The second pulley is installed on the outer wall of the first rotating disk.

[0010] As a further solution of the present invention, the control component includes a control box, a second rotating rod and a third rotating disk. The third rotating disk is fixedly connected to one side of the first connecting rod close to the main control box. The third rotating disk is rotatably connected to the bottom end of the control box. The second pulley is installed on the outer wall of the third rotating disk. The second rotating rod is installed in the inner wall of the third rotating disk.

[0011] As a further solution of the present invention, the driving assembly includes a bidirectional motor, a driving seat, a multi-stage telescopic rod, and a first driving disc. The bidirectional motor is installed on the outer wall of one side of the connecting rotating block, the driving seat is fixedly connected to the outer wall of the bidirectional motor, the first driving disc is rotatably connected to the end of the driving seat away from the bidirectional motor, the multi-stage telescopic rod is fixedly connected to one end of the first driving disc, the other end of the multi-stage telescopic rod is fixedly connected to one end of the installation box, a binding block is installed on the inner wall of the tail end of the multi-stage telescopic rod, and a pulling rope is wound through a perforation on the binding block.

[0012] As a further solution of the present invention, a second driving disc is rotatably connected to the inner ring of the first driving disc, a third driving disc is rotatably connected to the inner ring of the second driving disc, the output end of the bidirectional motor is rotatably connected to a transmission shaft, a connecting disc is fixedly connected to the axis position of the tail end of the transmission shaft, the connecting disc is attached to the first driving disc, and a plurality of first locking grooves and second locking grooves for locking are respectively arranged on the sides of the first driving disc and the third driving disc close to the second driving disc in a circumferential arrangement, and a plurality of adjusting grooves are arranged on the outer wall of the second driving disc in a circumferential arrangement.

[0013] As a further solution of the present invention, a connecting block is slidably connected to the side of the connecting disc close to the first driving disc, an adjusting block is fixedly connected to the outer wall of one side of the connecting block, the adjusting block is slidably connected to the inner wall of the adjusting groove, fastening blocks are slidably connected to both ends of the adjusting block, and the fastening blocks are adapted to the first locking grooves and the second locking grooves.

[0014] As a further solution of the present invention, a fixing plate is fixedly connected to the outer wall of the second motor frame on the bidirectional motor, a winding roller is rotatably connected to the bottom of the fixing plate, a transmission gear is fixedly connected to the axis position of the top end of the winding roller, a connecting column is fixedly connected to the axis position of the third driving disc, the pulling rope passes through the connecting column and is wound and fixed on the outer wall of the winding roller, a sliding seat is fixedly connected to one end of the fixing plate close to the connecting column, a gear rack is slidably connected in the sliding seat, the gear rack is engaged with the transmission gear, a slider is installed at the tail end of the gear rack, and a spiral groove is arranged on the outer wall of the connecting column, and the spiral groove is a double spiral structure, and the slider is slidably connected to the inner wall of the spiral groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When the present invention is used, through the arranged measuring assembly, response assembly, and triggering assembly, the inner diameter and roundness of the inner wall of the pressure vessel body can be measured, and the positions and deformation amounts of the concave and convex parts on the inner wall of the pressure vessel body can be accurately measured, which is convenient for the staff to carry out maintenance, and avoids the uneven force on the inner wall of the pressure vessel body caused by the poor roundness of the pressure vessel body, affecting the pressure-bearing capacity of the pressure vessel body and its service life; 2. When the present invention is used, through the arranged heating tube, the deformation amount of the adjusting tube can be increased by heating the adjusting tube, avoiding the too small change caused by the too small concave and convex parts of the pressure vessel body and being unable to be displayed, and improving the sensitivity of detection; 3. When the present invention is in use, through the provided control component and steering component, the angle of the measuring component can be adjusted, avoiding the situation that the measuring component cannot be parallel to the axis of the pressure vessel body during insertion, which affects the normal use of the measuring component. Subsequently, it can measure the pressure vessel body, improving its applicability. 4. When the present invention is in use, through the provided driving component, the measuring component can be driven to move and rotate by the forward and reverse rotation of the bidirectional motor. Furthermore, it can assist the measuring component to measure the roundness of various parts of the inner wall of the pressure vessel body, improving the comprehensiveness of the measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the pressure vessel body of a measuring and detecting instrument for the inner cavity of a pressure vessel.

[0017] Figure 2 It is a schematic structural diagram of the detection equipment body in a measuring and detecting instrument for the inner cavity of a pressure vessel.

[0018] Figure 3 It is a cross-sectional view of the control component in a measuring and detecting instrument for the inner cavity of a pressure vessel.

[0019] Figure 4 It is an exploded view of the control component in a measuring and detecting instrument for the inner cavity of a pressure vessel.

[0020] Figure 5 It is a cross-sectional view of the fixing component in a measuring and detecting instrument for the inner cavity of a pressure vessel.

[0021] Figure 6 It is a schematic structural diagram of the steering component in a measuring and detecting instrument for the inner cavity of a pressure vessel.

[0022] Figure 7 It is a cross-sectional view of the driving component in a measuring and detecting instrument for the inner cavity of a pressure vessel.

[0023] Figure 8 It is a schematic structural diagram of the driving disc in a measuring and detecting instrument for the inner cavity of a pressure vessel.

[0024] Figure 9 It is a schematic structural diagram of the transmission shaft in a measuring and detecting instrument for the inner cavity of a pressure vessel.

[0025] Figure 10 It is a cross-sectional view of the adjusting block in a measuring and detecting instrument for the inner cavity of a pressure vessel.

[0026] Figure 11 It is a schematic structural diagram of the fixing plate in a measuring and detecting instrument for the inner cavity of a pressure vessel.

[0027] Figure 12It is a cross-sectional view of an adjusting component in an instrument for measuring and detecting the inner cavity of a pressure vessel.

[0028] Figure 13 It is a schematic structural diagram of a folding rod in an instrument for measuring and detecting the inner cavity of a pressure vessel.

[0029] Figure 14 It is a cross-sectional view of a triggering component in an instrument for measuring and detecting the inner cavity of a pressure vessel.

[0030] Figure 15 It is a cross-sectional view of a response component in an instrument for measuring and detecting the inner cavity of a pressure vessel.

[0031] Figure 16 It is in an instrument for measuring and detecting the inner cavity of a pressure vessel Figure 15 and is an enlarged view of part A.

[0032] In the figure: 100, pressure vessel body; 101, opening; 102, support base; 103, feed inlet; 200, outer shell; 201, main control box; 202, handle; 203, control panel; 210, first connecting rod; 220, rotating seat; 221, connecting rotating block; 222, first rotating rod; 223, first rotating disk; 300, control box; 310, control disk; 311, turning handle; 312, second rotating rod; 313, limiting block; 320, second rotating disk; 321, first pulley; 330, third rotating disk; 331, second pulley; 340, limiting jack; 400, fixed seat; 401, adjusting part; 402, extrusion plate; 410, first lead screw; 411, first bevel gear; 420, second lead screw; 421, second bevel gear; 430, fourth rotating disk; 500, bidirectional motor; 501, transmission shaft; 502, connecting disk; 503, adjusting block; 504, connecting block; 505, first spring; 506, fastening block; 510, driving seat; 520, multi-stage telescopic rod; 521, second spring; 522, binding block; 523, pulling rope; 530, first driving disk; 531, second driving disk; 532, third driving disk; 533, first locking groove; 534, adjusting groove; 535, second locking groove; 540, fixed plate; 541, winding roller; 542, transmission gear; 543, sliding seat; 544, rack; 545, slider; 550, connecting column; 551, spiral groove; 600, Adjusting base; 601, Servo motor; 602, Driving gear; 603, Connecting shaft; 604, Driven gear; 605, Fifth rotating disc; 606, Third pulley; 610, Folding rod; 611, Rotating pin; 612, Sixth rotating disc; 620, Water pipe; 630, Trigger base; 631, First piston plate; 632, Second connecting rod; 633, Ball 700, Installation box; 701, Water storage tank; 710, Positive plate; 711, Telescopic member; 712, Negative plate; 720, Adjusting pipe; 721, Second piston plate; 730, Heating pipe; 731, Mounting plate Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention

[0034] Please refer to Figure 1 , in the embodiment of the present invention, a measuring and detecting instrument for the inner cavity of a pressure vessel includes a pressure vessel body 100 and a detecting device body. Specifically, a feeding port 103 for feeding is installed at the top of the pressure vessel body 100, and supporting seats 102 for support are installed at both ends of the bottom of the pressure vessel body 100. An opening 101 for connection is installed at the middle position of the side wall of the pressure vessel body 100. When materials need to be added into the pressure vessel body 100, they can be filled through the feeding port 103, and the design of the opening 101 enables the staff to quickly insert the instrument into the interior for internal detection Refer to Figure 2, the detection device body includes a housing 200 and a measurement component for measuring the inner wall diameter and roundness of the pressure vessel body 100. The measurement component includes an adjustment seat 600 for inner diameter measurement and folding rods 610 arranged circumferentially on the outer wall of the adjustment seat 600. A trigger component for extrusion contact with the inner wall of the pressure vessel body 100 is installed at the tail end of the folding rod 610. An adjustment component for driving the folding rod 610 to unfold is installed in the adjustment seat 600. By adjusting the adjustment component, the folding rod 610 is adjusted to unfold, and then the trigger component at the tail end of the folding rod 610 is brought into contact with the inner wall of the pressure vessel body 100. The measurement component also includes an installation box 700 installed at the axis position of one end of the adjustment seat 600 for measuring the roundness of the pressure vessel body 100. A response component whose current changes are driven by the trigger component is installed in the installation box 700. When protrusions and depressions occur on the inner wall of the pressure vessel body 100, the trigger component can drive the response component to start generating current changes, and thus the roundness of the inner wall of the pressure vessel body 100 can be measured; A main control box 201 for control is installed in the housing 200. A handle 202 for driving the housing 200 to move by pulling is installed at the top of the housing 200. A control panel 203 for operation and data display is installed on one side of the main control box 201. A first connecting rod 210 for connection is fixedly connected to one end of the main control box 201. A steering component for assisting the measurement component to turn is installed at the end of the first connecting rod 210 away from the housing 200. Through the steering component, the measurement component can be rotated to one side of the axis of the pressure vessel body 100. A control component for adjusting the steering component is installed on the outer wall of the first connecting rod 210 near the housing 200. A driving component for driving the measurement component to rotate and extend is installed on the steering component. The driving component is installed at the end of the installation box 700 away from the adjustment seat 600 through bolts. When measurement is required, the detection device is passed through the opening 101 on the pressure vessel body 100 into the inner wall of the pressure vessel body 100. At this time, the control component drives the steering component to rotate, and then drives the measurement component to rotate to the side parallel to the inner axis of the pressure vessel body 100. The adjustment component drives the folding rod 610 to rotate and unfold to bring the trigger component into contact with the inner wall of the pressure vessel body 100. At this time, the radius of the pressure vessel body 100 can be measured by the distance between the tail end of the trigger component and the axis of the adjustment seat 600. The inner diameter of the pressure vessel body 100 can be measured by the formula of the circle radius and the circle circumference. The driving component drives the adjustment seat 600 and the installation box 700 to rotate and move to measure the roundness of the inner wall of the pressure vessel body 100. The degree of protrusions and depressions on the inner wall of the pressure vessel body 100 can be obtained by the magnitude of the current change of the response component driven by the trigger component.

[0035] More specifically, refer to Figure 5, a fixing component for fixing the detection device body on the inner wall of the opening 101 is installed on the outer wall of the first connecting rod 210. The fixing component includes a fixing seat 400 installed on the outer wall of the first connecting rod 210, an adjusting member 401 slidably connected to the outer wall of the fixing seat 400, and a pressing plate 402 installed on the side of the adjusting member 401 away from the fixing seat 400 for support. A plurality of through first sliding grooves arranged in a circular pattern are formed in the inner wall of the fixing seat 400. Sliding cavities are formed at both ends of the first sliding groove. The adjusting member 401 is U-shaped and slidably connected to the inner wall of the limiting sliding groove. Protrusions slidably connected to the sliding cavities are installed at both ends of the adjusting member 401. The pressing plate 402 is arc-shaped and a plurality of damping grooves for increasing resistance are formed at the top. A first lead screw 410 is rotatably connected in the first sliding grooves at the upper and lower ends. The adjusting members 401 at the upper and lower ends are threadedly connected to the outer wall of the first lead screw 410. A second lead screw 420 is rotatably connected in the first sliding grooves at the left and right ends. The adjusting members 401 at the left and right ends are threadedly connected to the outer wall of the second lead screw 420. A first bevel gear 411 is fixedly connected to the middle position of the outer wall of the first lead screw 410. A second bevel gear 421 meshing with the first bevel gear 411 is fixedly connected to the axis position of one end of the second lead screw 420 close to the first lead screw 410. A fourth rotating disk 430 is fixedly connected to the outer wall of the first lead screw 410. A first pulley 321 for transmission is installed on the outer wall of the fourth rotating disk 430. Specifically, when the first pulley 321 rotates to drive the fourth rotating disk 430 and the first lead screw 410 thereon to rotate, the second bevel gear 421 meshing with it can be driven to rotate through the first bevel gear 411, and then the second lead screw 420 can be driven to rotate. Then, the adjusting members 401 threadedly connected to the first lead screw 410 and the second lead screw 420 are driven to slide in the first sliding grooves through the rotation of the first lead screw 410 and the second lead screw 420. The sliding direction of the adjusting member 401 is limited by the sliding of the protrusions on the adjusting member 401 in the sliding cavities. When the adjusting member 401 moves, the pressing plate 402 can be driven to move away from the axis of the fixing seat 400 and press against the inner wall of the opening 101 to fix the outer shell 200.

[0036] Refer to Figure 12 and 13, the adjusting assembly includes a servo motor 601, a driving gear 602, a connecting shaft 603 and a third pulley 606. One end of the adjusting seat 600 away from the mounting box 700 is provided with a first motor bracket, the servo motor 601 is installed on the inner wall of the first motor bracket, the driving gear 602 is rotatably connected to the inner wall of the adjusting seat 600 and installed on the output end of the servo motor 601. The connecting shafts 603 are arranged in a circular pattern and rotatably connected to the inner wall of the adjusting seat 600. The outer wall of the connecting shaft 603 is installed with a driven gear 604 and a fifth rotating disc 605. The driven gear 604 meshes with the outer wall of the driving gear 602. The folding rod member 610 is formed by rotating connection of multiple folding plates end to end into an integral structure. Both ends of the folding plate are fixedly connected with a rotating pin 611. The rotating pin 611 is rotatably connected to the inner wall of another folding plate. Both ends of the outer wall of the rotating pin 611 are fixedly connected with a sixth rotating disc 612. The third pulley 606 is installed on the outer wall of the sixth rotating disc 612 at both ends of the folding plate, and the third pulley 606 is installed on the outer wall of the fifth rotating disc 605 and the sixth rotating disc 612 on the folding plate close to one side of the adjusting seat 600. When the folding rod member 610 needs to be unfolded, the servo motor 601 is turned on at this time. The servo motor 601 can drive the driven gear 604 meshing with it to rotate through the driving gear 602 on its output end. The driven gear 604 can drive the fifth rotating disc 605 to rotate through the connecting shaft 603. The fifth rotating disc 605 can drive the sixth rotating disc 612 and the rotating pin 611 on it to rotate through the third pulley 606, and then drive the folding plate to rotate and unfold through the rotating pin 611, and drive another folding plate to rotate and unfold through the third pulley 606 on another sixth rotating disc 612. By repeating this process, multiple folding plates can be rotated and unfolded.

[0037] Refer to Figure 14, the triggering component includes a trigger base 630, a first piston plate 631 and a ball 633. The trigger base 630 is fixedly connected to the outer wall of the end of the folding rod 610 away from the adjusting base 600. The first piston plate 631 is slidably connected to the inner wall of the trigger base 630. A second connecting rod 632 is fixedly connected to the axial position at the top of the first piston plate 631. A rotating groove is formed at the top of the second connecting rod 632. The ball 633 is rotatably connected to the inner wall of the rotating groove on the second connecting rod 632. And a water pipe 620 for water delivery is fixedly connected to the bottom of the trigger base 630. The driving gear 602 passes through the folding rod 610 and the adjusting base 600 and extends to the inner wall of the installation box 700. An aqueous solution is filled at the bottom of the first piston plate 631 on the inner wall of the trigger base 630 and in the water pipe 620. When the folding rod 610 is unfolded, at this time, the first piston plate 631 is driven to move upward by the extrusion of water in the trigger base 630. Then, the ball 633 is driven to move toward the inner wall of the pressure vessel body 100 by the first piston plate 631 and the second connecting rod 632 and fits on the inner wall of the pressure vessel body 100. When the ball 633 moves to the concave and convex parts of the inner wall of the pressure vessel body 100, the ball 633 can move synchronously with the concave and convex parts of the inner wall of the pressure vessel body 100, and the aqueous solution in the trigger base 630 is delivered to the installation box 700 through the water pipe 620.

[0038] Refer to Figure 15 and 16, the response component includes a positive plate 710, a negative plate 712 and a regulating tube 720. The inner wall of the installation box 700 is fixedly connected with a water storage tank 701 for storing aqueous solution. The water pipe 620 is communicated with the inner wall of the water storage tank 701. The positive plate 710 is installed on the side of the installation box 700 away from the water storage tank 701. One end of the positive plate 710 is installed with a telescopic member 711. The telescopic member 711 is of a telescopic structure and the inner wall of the telescopic member 711 is filled with an electrolyte solution. The negative plate 712 is fixedly connected to the other end of the telescopic member 711. Elastic members for resetting are installed on the opposite wall surfaces of the positive plate 710 and the negative plate 712. The telescopic member 711 and the negative plate 712 are electrically connected to the control panel 203 through a guide. The regulating tube 720 is communicated with the water storage tank 701. A second piston plate 721 is slidably connected to the inner wall of the regulating tube 720. The side of the regulating tube 720 close to the water storage tank 701 is linear and made of a rigid material. The side of the regulating tube 720 away from the water storage tank 701 is arc-shaped and made of a resin material. An inert gas is filled on the side of the second piston plate 721 away from the water storage tank 701 inside the regulating tube 720. An installation plate 731 is installed on the outer wall of the water storage tank 701 at the bottom of the regulating tube 720. A heating tube 730 for heating is installed on the outer wall of the top of the installation plate 731 at the arc-shaped bottom position of the regulating tube 720. An electric arc is installed inside the heating tube 730, and heat is generated through the electric arc discharge. When the ball 633 moves to the convex part on the inner wall of the pressure vessel body 100, the aqueous solution can be moved into the regulating tube 720 through the water pipe 620 and the water storage tank 701 by squeezing the ball 633, and the second piston plate 721 is squeezed. When the second piston plate 721 is squeezed, the inert gas can be squeezed by moving. The gas can squeeze the tail end of the regulating tube 720, and then drive the regulating tube 720 to deform and straighten through the extrusion. Then, the negative plate 712 can be squeezed by the moving component perpendicular to the negative plate 712, and then drive the distance between the negative plate 712 and the positive plate 710 to decrease. The resistance value of the electrolyte in the telescopic member 711 is proportional to the distance, so the resistance value is decreased and the current is increased. On the contrary, the current is decreased. The electrical signal can be transmitted to the control panel 203 through the guide for display. The staff can measure the roundness of the inner wall of the pressure vessel body 100 according to the display data on the control panel 203. And by heating the arc-shaped part of the regulating tube 720 with the heating tube 730, the resin material of the regulating tube 720 can be heated and softened, improving its deformation amount, and further effectively increasing the moving distance of the negative plate 712 and improving the sensitivity of the measurement.

[0039] Refer to Figure 6, the steering assembly includes a rotating seat 220 and a connecting rotating block 221. The rotating seat 220 is fixedly connected to the axial position of one end of the first connecting rod 210 away from the housing 200. The rotating seat 220 is provided with a through rotating hole, and the inner wall of the rotating hole is rotatably connected to a first rotating rod 222. The connecting rotating block 221 is fixedly connected to both ends of the first rotating rod 222. A first rotating disk 223 is fixedly connected to the middle position of the outer wall of the first rotating rod 222. A second pulley 331 is installed on the outer wall of the first rotating disk 223. When the second pulley 331 rotates, the first rotating rod 222 can be driven to rotate through the first rotating disk 223, and then the connecting rotating block 221 can be driven to turn.

[0040] Refer to Figure 3 , the control assembly includes a control box 300, a second rotating rod 312 and a third rotating disk 330. The third rotating disk 330 is fixedly connected to one side of the first connecting rod 210 close to the main control box 201. The third rotating disk 330 is rotatably connected to the bottom end of the control box 300. The second pulley 331 is installed on the outer wall of the third rotating disk 330. A second rotating rod 312 is installed on the inner wall of the third rotating disk 330. A control disk 310 is fixedly connected to the axial position of the top end of the second rotating rod 312. A handlebar 311 for driving rotation is installed on one side of the top end of the control disk 310. When it is necessary to rotate the connecting rotating block 221, at this time, the handlebar 311 is pulled to drive the control disk 310 to rotate. The control disk 310 can drive the third rotating disk 330 to rotate through the second rotating rod 312, and then drive the first rotating disk 223 to rotate through the second pulley 331, and then drive the connecting rotating block 221 to rotate.

[0041] More specifically, refer to Figure 4, a partition is installed at the middle position of the inner wall of the third rotating disk 330. The top outer wall of the partition is rotatably connected to the second rotating disk 320. The first pulley 321 is installed on the outer wall of the second rotating disk 320. Two groups of limiting blocks 313 arranged in a circular pattern are installed on the outer wall of the second rotating rod 312. Limiting insertion holes 340 adapted to the limiting blocks 313 are provided on the inner walls of both the second rotating disk 320 and the third rotating disk 330. The distance between the two groups of limiting blocks 313 is smaller than the distance between the second rotating disk 320 and the third rotating disk 330. Specifically, when it is necessary to rotate the second rotating disk 320, at this time, the limiting block 313 at the top is clamped into the limiting insertion hole 340 in the second rotating disk 320, and the second rotating rod 312 can drive the second rotating disk 320 to rotate through the limiting block 313 when it rotates. When it is necessary to drive the third rotating disk 330 to rotate, at this time, the second rotating rod 312 is pressed, and then the second rotating rod 312 is driven to move downward. At this time, the upper limiting block 313 can be removed from the limiting insertion hole 340 on the second rotating disk 320, and the lower limiting block 313 can be inserted into the inner wall of the limiting insertion hole 340 on the third rotating disk 330, so that the third rotating disk 330 can be driven to rotate through the limiting block 313. Then, through the movement of the second rotating rod 312, the second rotating disk 320 and the third rotating disk 330 can be adjusted separately.

[0042] Refer to Figure 2 and Figure 7 , the driving assembly includes a bidirectional motor 500, a driving seat 510, a multi-stage telescopic rod 520, and a first driving disk 530. A second motor bracket is installed on the outer wall of one side of the connecting rotating block 221. The bidirectional motor 500 is installed on the inner wall of the second motor bracket. The driving seat 510 is fixedly connected to the second motor bracket on the outer wall of the bidirectional motor 500. The first driving disk 530 is rotatably connected to one end of the driving seat 510 away from the bidirectional motor 500. The multi-stage telescopic rod 520 is fixedly connected to one end of the first driving disk 530. The other end of the multi-stage telescopic rod 520 is fixedly connected to one end of the installation box 700. The multi-stage telescopic rod 520 is an overall structure formed by sequentially slidingly connecting a plurality of hollow columnar blocks. Second sliding grooves are provided at both ends of the columnar blocks. Sliding blocks slidably connected to the second sliding grooves are installed on the outer walls of the columnar blocks. Second springs 521 for providing elastic force are installed on the opposite wall surfaces of two adjacent columnar blocks. A binding block 522 is installed on the inner wall of the tail end of the multi-stage telescopic rod 520. A pull rope 523 is wound through a hole in the binding block 522.

[0043] Refer to Figure 8, a second driving disk 531 is rotatably connected to the inner ring of the first driving disk 530, a third driving disk 532 is rotatably connected to the inner ring of the second driving disk 531, the output end of the bidirectional motor 500 is rotatably connected to a transmission shaft 501, a connecting disk 502 is fixedly connected to the axis position at the tail end of the transmission shaft 501, the connecting disk 502 is in contact with the first driving disk 530, and a plurality of first locking grooves 533 and second locking grooves 535 for locking are respectively arranged on one side of the first driving disk 530 and the third driving disk 532 close to the second driving disk 531 in a circumferential arrangement. A plurality of adjusting grooves 534 are arranged on the outer wall of the second driving disk 531 in a circumferential arrangement. The adjusting grooves 534 are arc-shaped and penetrate through the inner and outer rings of the second driving disk 531.

[0044] Refer to Figure 9 and 10 , a plurality of third sliding grooves are arranged on one side of the connecting disk 502 close to the first driving disk 530 in a circumferential arrangement. A connecting block 504 is slidably connected to the inner wall of the third sliding groove. An adjusting block 503 is fixedly connected to the outer wall of one side of the connecting block 504. The adjusting block 503 is slidably connected to the inner wall of the adjusting groove 534. Sliding holes are arranged at both ends of the adjusting block 503. A fastening block 506 is slidably connected to the inner wall of the sliding hole. The fastening block 506 is adapted to the first locking groove 533 and the second locking groove 535. A first spring 505 is fixedly connected to the opposite wall surfaces of the fastening block 506 and the sliding hole. When the bidirectional motor 500 rotates counterclockwise, at this time, the adjusting block 503 can rotate on the arc surface of the adjusting groove 534, and then drive the connecting block 504 to move away from the axis of the connecting disk 502 in the third sliding groove along the circular arc displacement component of the adjusting groove 534. At this time, the adjusting block 503 is close to the first locking groove 533 on the first driving disk 530. Then, under the elastic force of the first spring 505, the fastening block 506 can be driven to enter the inner wall of the first locking groove 533 for clamping. When the connecting disk 502 rotates, the first driving disk 530 can be driven to rotate through the fastening block 506, and then the installation box 700 and the adjusting seat 600 can be driven to rotate through the multi-stage telescopic rod 520. When the bidirectional motor 500 rotates in reverse, at this time, the connecting block 504 can move downward in the third sliding groove through the displacement component of the adjusting block 503 sliding in the adjusting groove 534, and then drive the third driving disk 532 to rotate through the fastening block 506 at the bottom entering the second locking groove 535. Then, the first driving disk 530 and the third driving disk 532 are respectively driven to rotate through the bidirectional rotation of the bidirectional motor 500.

[0045] Refer to Figure 11, a fixed plate 540 is fixedly connected to the outer wall of the second motor mount on the two-way motor 500. A winding roller 541 is rotatably connected to the bottom of the fixed plate 540. A transmission gear 542 is fixedly connected to the axial position at the top of the winding roller 541. A connecting column 550 is fixedly connected to the axial position of the third driving disk 532. A through hole is provided through the connecting column 550. The pull rope 523 passes through the connecting column 550 and is wound and fixed on the outer wall of the winding roller 541. One end of the fixed plate 540 close to the connecting column 550 is fixedly connected to a sliding seat 543. A gear rack 544 is slidably connected in the sliding seat 543. The gear rack 544 meshes with the transmission gear 542. A slider 545 is installed at the tail end of the gear rack 544. A spiral groove 551 is provided on the outer wall of the connecting column 550. The spiral groove 551 is a double spiral structure. The slider 545 is slidably connected to the inner wall of the spiral groove 551. When the third driving disk 532 rotates to drive the connecting column 550 to rotate, the slider 545 can be driven to slide on the spiral groove 551. Since the spiral groove 551 is a double spiral structure, when the slider 545 slides to the end of the spiral groove 551, it can turn, and then the slider 545 can be driven to slide back and forth on the spiral groove 551, and then the gear rack 544 can be driven to move back and forth in the sliding seat 543. The movement of the gear rack 544 can drive the transmission gear 542 to rotate. Then, through the reciprocating rotation of the transmission gear 542 and the winding roller 541, the pull rope 523 is wound and unwound. When winding, the multi-stage telescopic rod 520 can be driven to contract by the pulling of the pull rope 523. When unwinding, the elastic force of the second spring 521 can keep the pull rope 523 taut and drive the multi-stage telescopic rod 520 to extend, and then the length of the multi-stage telescopic rod 520 is adjusted, and the adjusting seat 600 and the installation box 700 can be driven to move.

[0046] The working principle of the present invention is: when measurement is required, at this time, the adjusting seat 600 and the installation box 700 pass through the opening 101 and enter the inner wall of the pressure vessel body 100. By rotating the turning handle 311, the first rotating rod 222 and the connecting rotating block 221 are driven to rotate through the second rotating rod 312, the third rotating disk 330, the second pulley 331 and the first rotating disk 223. The adjusting seat 600 and the installation box 700 are rotated to one side parallel to the axis of the pressure vessel body 100. Then, the servo motor 601 is turned on. Then, the third pulley 606 is driven to rotate through the driving gear 602, the driven gear 604 and the fifth rotating disk 605. By rotating a plurality of rotating pins 611, the folding rod member 610 can be rotated and unfolded. At this time, through the extrusion of the aqueous solution, the first piston plate 631, the second connecting rod 632 and the ball 633 can be driven to move. The ball 633 is attached to the inner wall of the pressure vessel body 100. Then, the distance between the ball 633 and the axis of the adjusting seat 600 can be obtained to get the radius of the pressure vessel body 100, and then the inner diameter length of the pressure vessel body 100 can be calculated. Then, turn on the bidirectional motor 500. By the forward and reverse rotation of the bidirectional motor 500, the fastening blocks 506 on the adjustment block 503 are respectively clamped into the first locking groove 533 and the second locking groove 535, and then drive the first drive disk 530 and the third drive disk 532 to rotate respectively. The first drive disk 530 can drive the adjustment seat 600 and the ball 633 at the folding rod 610 on the adjustment seat 600 to rotate around the inner wall of the pressure vessel body 100 through the multi-stage telescopic rod 520. When the third drive disk 532 rotates, it can drive the rack 544 to reciprocate by the sliding of the slider 545 on the spiral groove 551, and then drive the transmission gear 542 and the winding roller 541 to rotate reciprocally to wind and unwind the pulling rope 523. Through the pulling of the pulling rope 523 and the expansion and contraction of the second spring 521, the multi-stage telescopic rod 520 is driven to expand and contract, and then drive the ball 633 to move on the inner wall of the pressure vessel body 100. Through the rotation and movement of the ball 633, the ball 633 can be driven to move to any position on the inner wall of the pressure vessel body 100; When the ball 633 moves to the concave and convex parts of the inner wall of the pressure vessel body 100, the water solution can be driven into the adjustment tube 720 through the water pipe 620 to squeeze the second piston plate 721. The second piston plate 721 drives the gas to squeeze the tail end of the adjustment tube 720 by squeezing the inert gas, driving the adjustment tube 720 to deform and bend. Then, through the displacement component of the bending of the adjustment tube 720, the negative electrode plate 712 is squeezed, driving the distance between the negative electrode plate 712 and the positive electrode plate 710 to change, and further generating a change in current, which is transmitted to the control panel 203 through an electrical signal for display. Thus, the position and deformation amount of the concave and convex parts of the inner wall of the pressure vessel body 100 can be measured according to the displayed data and the position of the ball 633.

[0047] When in use, through the provided measuring component, response component and triggering component, the inner diameter and roundness of the inner wall of the pressure vessel body 100 can be measured, and the position and deformation amount of the concave and convex parts of the inner wall of the pressure vessel body 100 can be accurately measured, which is convenient for the staff to carry out maintenance, and avoids the uneven force on the inner wall of the pressure vessel body 100 caused by the poor roundness of the pressure vessel body 100, affecting the pressure bearing capacity of the pressure vessel body 100 and its service life.

[0048] Through the provided heating tube 730, the deformation amount of the adjustment tube 720 can be increased by heating the adjustment tube 720, avoiding the too small change caused by the too small concave and convex parts of the pressure vessel body 100 and being unable to be displayed, and improving the sensitivity of detection.

[0049] Through the provided control component and steering component, the angle of the measuring component can be adjusted, avoiding the situation where the measuring component cannot be parallel to the axis of the pressure vessel body 100 during insertion, which affects the normal use of the measuring component, and then enabling measurement on the pressure vessel body 100 and improving its applicability.

[0050] Through the provided driving component, the measuring component can be driven to move and rotate by the forward and reverse rotation of the bidirectional motor 500, thereby being able to assist the measuring component in measuring the roundness of various parts of the inner wall of the pressure vessel body 100 and improving the comprehensiveness of the measurement.

[0051] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered by the protection scope of the present invention.

Claims

1. An internal cavity measuring and detecting instrument for a pressure vessel, comprising a pressure vessel body (100) and a detecting equipment body, characterized in that, The detection device body includes a housing (200) and a measurement assembly for measuring the inner wall diameter and roundness of the pressure vessel body (100). The measurement assembly includes an adjustment seat (600) for measuring the inner diameter and folding rods (610) arranged in a circumferential manner on the outer wall of the adjustment seat (600). A trigger assembly for extrusion contact with the inner wall of the pressure vessel body (100) is installed at the tail end of the folding rods (610). An adjustment assembly for driving the folding rods (610) to unfold is installed in the adjustment seat (600). The measurement assembly further includes an installation box (700) installed at the axis position of one end of the adjustment seat (600) for measuring the roundness of the pressure vessel body (100). A response assembly that drives a current change through the trigger assembly is installed in the installation box (700). A main control box (201) for control is installed in the housing (200). A first connecting rod (210) for connection is fixedly connected to one end of the main control box (201). A steering assembly for assisting the measurement assembly to turn is installed at the end of the first connecting rod (210) away from the housing (200). A control assembly for adjusting the steering assembly is installed on the outer wall of the first connecting rod (210) close to the housing (200). A driving assembly for driving the measurement assembly to rotate and extend is installed on the steering assembly. The driving assembly is installed at the end of the installation box (700) away from the adjustment seat (600) through bolts.

2. The inner cavity measuring and detecting instrument for a pressure vessel according to claim 1, characterized in that, The adjustment assembly includes a servo motor (601), a driving gear (602), a connecting shaft (603), and a third pulley (606). The servo motor (601) is installed at the end of the adjustment seat (600) away from the installation box (700). The driving gear (602) is rotatably connected to the inner wall of the adjustment seat (600) and installed at the output end of the servo motor (601). The connecting shafts (603) are arranged in a circumferential manner and rotatably connected to the inner wall of the adjustment seat (600). A driven gear (604) and a fifth rotating disc (605) are installed on the outer wall of the connecting shaft (603). The driven gear (604) meshes with the outer wall of the driving gear (602). The folding rods (610) are formed by connecting multiple folding plates end to end into an integral structure. Rotating pins (611) are fixedly connected to both ends of the folding plates. The rotating pins (611) are rotatably connected to the inner wall of another folding plate. Sixth rotating discs (612) are fixedly connected to both ends of the outer wall of the rotating pins (611). The third pulley (606) is installed on the outer walls of the sixth rotating discs (612) at both ends of the folding plates, and the third pulley (606) is installed on the outer walls of the fifth rotating disc (605) and the sixth rotating disc (612) on the folding plate close to the adjustment seat (600).

3. The internal cavity measuring and detecting instrument for a pressure vessel according to claim 2, characterized in that, The trigger assembly includes a trigger base (630), a first piston plate (631), and a ball (633). The trigger base (630) is fixedly connected to the outer wall of one end of the folding rod (610) away from the adjustment base (600). The first piston plate (631) is slidably connected to the inner wall of the trigger base (630). A second connecting rod (632) is fixedly connected to the axial position of the top end of the first piston plate (631). The ball (633) is rotatably connected to the inner wall of the second connecting rod (632). And a water pipe (620) for water delivery is fixedly connected to the bottom end of the trigger base (630). The driving gear (602) passes through the folding rod (610) and the adjustment base (600) and extends to the inner wall of the installation box (700).

4. An internal cavity measurement and detection instrument for a pressure vessel according to claim 3, characterized in that, The response assembly includes a positive plate (710), a negative plate (712), and an adjustment pipe (720). A water storage tank (701) for storing an aqueous solution is fixedly connected to the inner wall of the installation box (700). The water pipe (620) communicates with the inner wall of the water storage tank (701). The positive plate (710) is installed on one side of the installation box (700) away from the water storage tank (701). A telescopic member (711) is installed at one end of the positive plate (710). The negative plate (712) is fixedly connected to the other end of the telescopic member (711). The adjustment pipe (720) communicates with the water storage tank (701). A second piston plate (721) is slidably connected to the inner wall of the adjustment pipe (720). An installation plate (731) is installed on the outer wall of the water storage tank (701) at the bottom of the adjustment pipe (720). A heating pipe (730) for heating is installed at the position of the top outer wall of the installation plate (731) at the bottom of the adjustment pipe (720).

5. An internal cavity measurement and detection instrument for a pressure vessel according to claim 1, characterized in that, The steering assembly includes a rotating base (220) and a connecting rotating block (221). The rotating base (220) is fixedly connected to the axial position of one end of the first connecting rod (210) away from the outer shell (200). A first rotating rod (222) is rotatably connected to the inner wall of the rotating base (220). The connecting rotating block (221) is fixedly connected to both ends of the first rotating rod (222). A first rotating disk (223) is fixedly connected to the middle position of the outer wall of the first rotating rod (222). A second pulley (331) is installed on the outer wall of the first rotating disk (223).

6. An inner cavity measuring and detecting instrument for a pressure vessel according to claim 5, characterized in that, The control assembly includes a control box (300), a second rotating rod (312), and a third rotating disk (330). The third rotating disk (330) is fixedly connected to one side of the first connecting rod (210) close to the main control box (201). The third rotating disk (330) is rotatably connected to the bottom end of the control box (300). The second pulley (331) is installed on the outer wall of the third rotating disk (330). A second rotating rod (312) is installed on the inner wall of the third rotating disk (330).

7. An internal cavity measuring and detecting instrument for a pressure vessel according to claim 1, characterized in that, The driving assembly includes a bidirectional motor (500), a driving seat (510), a multi-stage telescopic rod (520), and a first driving disk (530). The bidirectional motor (500) is installed on the outer wall of one side of the connecting rotating block (221). The driving seat (510) is fixedly connected to the outer wall of the bidirectional motor (500). The first driving disk (530) is rotatably connected to one end of the driving seat (510) away from the bidirectional motor (500). One end of the multi-stage telescopic rod (520) is fixedly connected to the first driving disk (530), and the other end of the multi-stage telescopic rod (520) is fixedly connected to one end of the installation box (700). A binding block (522) is installed on the inner wall of the tail end of the multi-stage telescopic rod (520), and a pull rope (523) is wound through a perforation on the binding block (522).

8. A measuring and detecting instrument for the inner cavity of a pressure vessel according to claim 7, characterized in that, A second driving disk (531) is rotatably connected to the inner ring of the first driving disk (530), and a third driving disk (532) is rotatably connected to the inner ring of the second driving disk (531). The output end of the bidirectional motor (500) is rotatably connected to a transmission shaft (501). A connecting disk (502) is fixedly connected to the axis position of the tail end of the transmission shaft (501). The connecting disk (502) is attached to the first driving disk (530). A plurality of first locking grooves (533) and second locking grooves (535) for locking, which are arranged in a circular pattern, are respectively formed on one side of the first driving disk (530) and the third driving disk (532) close to the second driving disk (531). A plurality of adjusting grooves (534) are arranged in a circular pattern on the outer wall of the second driving disk (531).

9. An internal cavity measurement and detection instrument for a pressure vessel according to claim 8, characterized in that, A connecting block (504) is slidably connected to one side of the connecting disk (502) close to the first driving disk (530). An adjusting block (503) is fixedly connected to the outer wall of one side of the connecting block (504). The adjusting block (503) is slidably connected to the inner wall of the adjusting groove (534). Fastening blocks (506) are slidably connected to both ends of the adjusting block (503), and the fastening blocks (506) are adapted to the first locking grooves (533) and the second locking grooves (535).

10. The inner cavity measuring and detecting instrument for a pressure vessel according to claim 9, characterized in that, A fixing plate (540) is fixedly connected to the outer wall of the second motor bracket on the bidirectional motor (500). A winding roller (541) is rotatably connected to the bottom of the fixing plate (540). A transmission gear (542) is fixedly connected to the axis position of the top end of the winding roller (541). A connecting column (550) is fixedly connected to the axis position of the third driving disk (532). The pull rope (523) passes through the connecting column (550) and is wound and fixed on the outer wall of the winding roller (541). A sliding seat (543) is fixedly connected to one end of the fixing plate (540) close to the connecting column (550). A gear rack (544) is slidably connected in the sliding seat (543). The gear rack (544) is meshed with the transmission gear (542). A slider (545) is installed at the tail end of the gear rack (544). A spiral groove (551) is formed on the outer wall of the connecting column (550), and the spiral groove (551) is a double-spiral structure. The slider (545) is slidably connected to the inner wall of the spiral groove (551).

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