PA detection auxiliary tool for welding seam of chemical spherical tank

Abstract

The utility model discloses a PA (polyamide) detection auxiliary tool for a weld joint of a chemical spherical tank, relates to the technical field of auxiliary tools, and aims to solve the problems that in the prior art, only a spherical tank can be placed and fixed, only the weld joint of the spherical tank can be detected when flaw detection is carried out, and the use is not convenient enough. Supporting mechanisms distributed at equal intervals are annularly fixed to the top of the base, a placing mechanism is arranged above the base, and each supporting mechanism comprises a bottom plate. The limiting rods are pulled out, the fixing frames are put down, the supporting mechanisms are prevented from blocking the supporting mechanisms in the middle, the chemical spherical tanks can be conveniently placed on the placing rings, then the fixing frames are vertically placed in sequence, the limiting rods are inserted into the fixing plates and the fixing frames, the fixing frames are vertically fixed, and therefore the chemical spherical tanks can be conveniently placed. And the height position of the movable block is adjusted through the servo motor, so that the height of the guide wheel can be matched with the size of the chemical spherical tank.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary tooling, in particular to a PA detection auxiliary tooling for a chemical spherical tank weld. Background Art

[0002] Spherical tanks can be used to store various gases, liquefied petroleum gas, liquefied natural gas, liquid hydrocarbons, liquid ammonia, liquid nitrogen, liquid oxygen and liquid hydrogen, etc. Compared with cylindrical pressure vessels, spherical tanks have the following characteristics in manufacturing: First, in order to save materials and facilitate manufacturing, spherical tanks often use low-alloy high-strength steel with a higher strength level to minimize the wall thickness, but the weldability of this type of steel is generally poor, so reliable welding process measures must be taken; second, the spherical tank is assembled from multiple spherical petals, and the assembly dimensional accuracy must be strictly guaranteed to prevent excessive additional stress from being generated in local parts of the spherical shell; third, many spherical tanks can only be assembled and welded on site due to their large size. Therefore, in order to ensure storage safety and avoid problems at the welds, the welds of the spherical tanks need to be frequently inspected during construction and use.

[0003] The existing auxiliary tooling can only place and fix the spherical tank. When performing flaw detection, it can only detect around the weld of the spherical tank, which is not convenient to use. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a PA detection auxiliary tooling for the welds of chemical spherical tanks, which overcomes the deficiencies of the prior art and effectively solves the problem that the prior art can only place and fix the spherical tank, and when performing flaw detection, only the welds around the spherical tank can be detected, which is not convenient to use.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A PA detection auxiliary tooling for a chemical spherical tank weld comprises a base, the top of the base is fixed with support mechanisms distributed at equal distances along a ring, and a placement mechanism is arranged above the base, the support mechanism comprises a bottom plate, fixed plates fixed to the two ends of the top of the bottom plate, a fixing frame rotatably connected between the two fixing plates, a screw rod rotatably connected to the inner walls at both ends of the fixing frame, a movable block screwed on the screw rod wall, a push rod motor fixed to the outer wall of one side of the movable block, a U-shaped block fixed to one end of the push rod motor and a guide wheel rotatably connected to the inner walls on both sides of the U-shaped block, and the placement mechanism comprises a turntable, a fixing seat fixed to the top of the turntable at equal distances along a ring, a handle screw screwed to the fixing seat, a placement ring arranged above the turntable, and a connecting block fixed to the bottom of the placement ring at equal distances.

[0007] By pulling out the limit rod, the fixing frame is laid down to avoid the support mechanism from blocking the middle support mechanism, so as to facilitate the placement of the chemical spherical tank on the placement ring, and then the fixing frames are placed vertically in sequence, and the limit rod is inserted into the fixing plate and the fixing frame to fix the fixing frame vertically. The output shaft of the servo motor drives the lead screw to rotate, and the height position of the movable block is adjusted to make the height of the guide wheel consistent with the size of the chemical spherical tank. The push rod motor is extended to drive the guide wheel to abut against the outer wall of the chemical spherical tank. The output shaft of the drive motor drives the rotating rod to rotate through the mutually meshing gears, and then drives the turntable to rotate, so that the chemical spherical tank placed above is rotated, which can cooperate with the detection of welds.

[0008] Preferably, the top of the base is provided with symmetrically distributed mounting holes along a ring shape, and the bottom plate is connected and fixed to the mounting holes by bolts.

[0009] The bottom plate is connected and fixed to the base through bolts, so that the supporting mechanism is installed on the top of the base along a ring shape.

[0010] Preferably, positioning holes are provided at the top of the outer walls of the two fixing plates and the bottom of the outer wall of the fixing frame, and limiting rods are inserted into the positioning holes.

[0011] The fixing frame is fixed vertically by plugging the fixing plate and the fixing frame with the limiting rod.

[0012] Preferably, a servo motor is installed on the top of the fixing frame, and the output shaft of the servo motor is connected and fixed to the top end of the screw rod.

[0013] The output shaft of the servo motor drives the lead screw to rotate.

[0014] Preferably, the top of the base is rotatably connected to a rotating rod, and one side of the rotating rod is provided with a driving motor fixed to the top of the base.

[0015] The base and the turntable are connected via a rotating rod.

[0016] Preferably, the output shaft of the driving motor and the rod wall of the rotating rod are both sleeved and fixed with mutually meshing gears, and the top of the rotating rod is connected and fixed to the bottom of the turntable.

[0017] The output shaft of the driving motor drives the rotating rod to rotate through the mutually meshing gears, thereby driving the turntable to rotate.

[0018] Preferably, a screw hole is provided on an outer wall of one side of the connection block, and the screw hole and the handle screw rod form a threaded fit.

[0019] The placement ring is connected and fixed by screwing the handle screw rod and the connection block.

[0020] The beneficial effects of the utility model are:

[0021] By pulling out the limit rod and laying down the fixing frame, it is avoided that the supporting mechanism blocks the supporting mechanism in the middle, so that the chemical spherical tank can be placed on the placement ring. Then the fixing frames are placed vertically in sequence, and the limit rod is inserted into the fixing plate and the fixing frame to fix the fixing frame vertically. The height position of the movable block is adjusted by the servo motor, so that the height of the guide wheel can be consistent with the size of the chemical spherical tank. The push rod motor is extended to drive the guide wheel to abut against the outer wall of the chemical spherical tank, and the drive motor drives the turntable to rotate, so that the chemical spherical tank placed above can be rotated, which can cooperate with the detection of welds. This effectively solves the problem that the prior art can only place and fix the spherical tank, and when performing flaw detection, only the weld around the spherical tank can be detected, which is not convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a PA detection auxiliary tooling for chemical spherical tank welds proposed by the utility model;

[0023] Figure 2 This is a schematic diagram of the supporting mechanism structure of a PA detection auxiliary tooling for a chemical spherical tank weld proposed by the utility model;

[0024] Figure 3 This is a schematic diagram of the base structure of a PA detection auxiliary tooling for a chemical spherical tank weld proposed by the utility model;

[0025] Figure 4 The utility model is a schematic diagram of the placement mechanism structure of a PA detection auxiliary tooling for a chemical spherical tank weld.

[0026] In the figure: 1. base; 2. supporting mechanism; 3. placing mechanism; 4. bottom plate; 5. fixing plate; 6. fixing frame; 7. limiting rod; 8. screw rod; 9. servo motor; 10. movable block; 11. push rod motor; 12. U-shaped block; 13. guide wheel; 14. rotating rod; 15. driving motor; 16. turntable; 17. fixing seat; 18. handle screw; 19. placing ring; 20. connecting block. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Example

[0028] Reference Figure 1-4, a PA detection auxiliary tooling for a chemical spherical tank weld, comprising a base 1, a support mechanism 2 equidistantly distributed along a ring is fixed on the top of the base 1, a placement mechanism 3 is arranged above the base 1, the support mechanism 2 comprises a bottom plate 4, a fixing plate 5 fixed at both ends of the top of the bottom plate 4, a fixing frame 6 rotatably connected between the two fixing plates 5, a screw rod 8 rotatably connected to the inner walls of both ends of the fixing frame 6, a movable block 10 screwed on the rod wall of the screw rod 8, a push rod motor 11 fixed to the outer wall of one side of the movable block 10, a U-shaped block 12 fixed to one end of the push rod motor 11 and a guide wheel 13 rotatably connected to the inner walls of both sides of the U-shaped block 12, the placement mechanism 3 comprises a turntable 16, a fixing seat 17 fixed to the top of the turntable 16 equidistantly along a ring, a handle screw 18 screwed to the fixing seat 17, a placement ring 19 arranged above the turntable 16, and a connection block 20 fixed to the bottom of the placement ring 19 equidistantly;

[0029] The top of the base 1 is provided with symmetrically distributed mounting holes along a ring, the bottom plate 4 is connected and fixed to the mounting holes by bolts, the bottom plate 4 is connected and fixed to the base 1 by bolts, so that the support mechanism 2 is installed on the top of the base 1 along a ring, the top of the outer wall of the two fixing plates 5 and the bottom end of the outer wall of the fixing frame 6 are provided with positioning holes, and the limiting rod 7 is inserted into the positioning hole, and the fixing frame 6 is vertically fixed by inserting the limiting rod 7 to the fixing plate 5 and the fixing frame 6, and the top of the fixing frame 6 is installed with a servo motor 9, and the output shaft of the servo motor 9 is connected and fixed to the top of the screw rod 8, and the output shaft of the servo motor 9 drives the screw rod 8 to rotate;

[0030] The top of the base 1 is rotatably connected with a rotating rod 14, and a driving motor 15 fixed to the top of the base 1 is provided on one side of the rotating rod 14. The base 1 and the turntable 16 are connected through the rotating rod 14, and the output shaft of the driving motor 15 and the rod wall of the rotating rod 14 are both sleeved and fixed with mutually meshing gears. The top of the rotating rod 14 is connected and fixed with the bottom of the turntable 16, and the output shaft of the driving motor 15 drives the rotating rod 14 to rotate through the mutually meshing gears, thereby driving the turntable 16 to rotate. A screw hole is opened on the outer wall of one side of the connecting block 20, and the screw hole and the handle screw 18 form a threaded match. The handle screw 18 is screwed to the connecting block 20 to connect and fix the placement ring 19.

[0031] Working principle:

[0032] When in use, the limit rod 7 is pulled out to make the fixing frame 6 fall down to avoid the support mechanism 2 from blocking the middle support mechanism 2, so as to facilitate the placement of the chemical spherical tank on the placement ring 19, and then the fixing frame 6 is placed vertically in sequence, and the limit rod 7 is inserted into the fixing plate 5 and the fixing frame 6 to fix the fixing frame 6 vertically, and the output shaft of the servo motor 9 drives the screw rod 8 to rotate, and the height position of the movable block 10 is adjusted to make the height of the guide wheel 13 consistent with the size of the chemical spherical tank, and the push rod motor 11 is extended to drive the guide wheel 13 to abut against the outer wall of the chemical spherical tank, and the output shaft of the drive motor 15 drives the rotating rod 14 to rotate through the mutually meshing gears, and then drives the turntable 16 to rotate, so that the chemical spherical tank placed above is rotated, which can cooperate with the detection of welds.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A PA detection auxiliary tool for chemical spherical tank welds, comprising a base (1), characterized in that: The top of the base (1) is fixed with support mechanisms (2) distributed at equal distances along a ring shape, and a placement mechanism (3) is arranged above the base (1), the support mechanism (2) comprising a bottom plate (4), fixed plates (5) fixed to the two ends of the top of the bottom plate (4), a fixed frame (6) rotatably connected between the two fixed plates (5), a screw rod (8) rotatably connected to the inner walls of the two ends of the fixed frame (6), a movable block (10) screwed to the rod wall of the screw rod (8), and an outer support member (3) fixed to one side of the movable block (10). The invention relates to a push rod motor (11) for mounting on a wall, a U-shaped block (12) fixed to one end of the push rod motor (11), and guide wheels (13) rotatably connected to the inner walls on both sides of the U-shaped block (12). The placement mechanism (3) comprises a turntable (16), a fixing seat (17) fixed to the top of the turntable (16) at equal distances along a ring shape, a handle screw (18) screwed to the fixing seat (17), a placement ring (19) arranged above the turntable (16), and a connection block (20) fixed to the bottom of the placement ring (19) at equal distances.

2. The PA detection auxiliary tooling for chemical spherical tank welds according to claim 1 is characterized in that: The top of the base (1) is provided with symmetrically distributed mounting holes along a ring shape, and the bottom plate (4) is connected and fixed to the mounting holes by means of bolts.

3. The PA detection auxiliary tooling for chemical spherical tank welds according to claim 1 is characterized in that: Positioning holes are provided at the top of the outer walls of the two fixing plates (5) and the bottom of the outer wall of the fixing frame (6), and limiting rods (7) are inserted into the positioning holes.

4. The PA detection auxiliary tooling for chemical spherical tank welds according to claim 1 is characterized in that: A servo motor (9) is mounted on the top of the fixing frame (6), and the output shaft of the servo motor (9) is connected and fixed to the top end of the screw rod (8).

5. The PA detection auxiliary tooling for chemical spherical tank welds according to claim 1 is characterized in that: The top of the base (1) is rotatably connected to a rotating rod (14), and a driving motor (15) fixed to the top of the base (1) is provided on one side of the rotating rod (14).

6. The PA detection auxiliary tooling for chemical spherical tank welds according to claim 5 is characterized in that: The output shaft of the driving motor (15) and the rod wall of the rotating rod (14) are both sleeved and fixed with mutually meshing gears, and the top of the rotating rod (14) is connected and fixed to the bottom of the rotating disk (16).

7. The PA detection auxiliary tooling for chemical spherical tank welds according to claim 1 is characterized in that: A screw hole is provided on one side outer wall of the connection block (20), and the screw hole and the handle screw rod (18) form a threaded fit.

Images