Polishing device for fillet weld of connecting pipe of boiler pressure vessel

Abstract

The utility model discloses a boiler pressure vessel connecting pipe fillet weld polishing device, and relates to the technical field of boiler pressure vessel manufacturing. The connecting pipe clamping device comprises an upper U-shaped support and a lower U-shaped support, the inner side of the upper U-shaped support and the inner side of the lower U-shaped support are fixedly connected with connecting pipe clamping seats through bolts, and the bottom of the upper U-shaped support is symmetrically and fixedly connected with connecting rods. The connecting pipe clamping seats matched with the connecting pipes are fixed on the inner sides of the upper U-shaped support and the lower U-shaped support, so that the grinding device can be fixed on the connecting pipes with different pipe diameters, the screw rod is rotated to drive the mounting seat and the grinding motor to move up and down for adjustment, and the welding seam grinding head can be effectively contacted with the fillet welding seam of the connecting pipe; accordingly, fillet welds of the connecting pipes with different pipe diameters can be ground, practicability is higher, and through the arranged driving piece, a worker can conveniently drive the weld grinding head to rotate around the semi-annular guide rail to quickly grind the fillet welds of the connecting pipes.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of boiler pressure vessel manufacturing, especially relates to a boiler pressure vessel connecting pipe fillet welding seam polishing device. BACKGROUND

[0002] The boiler pressure vessel belongs to special equipment and plays a very important role in production and life, and the connection between the connecting pipe and the cylinder adopts a fillet welding seam structure during manufacturing, and the welding seam needs to be polished and smoothly transitioned after welding, so as to preliminarily detect whether the welding seam is full and whether there is a risk of leakage, and to reduce stress concentration and improve the appearance quality of the welding seam. During the maintenance of the pressure vessel, the fillet welding seam surface defects of the connecting pipe also need to be polished and eliminated. The welding and polishing device of the boiler pressure vessel in the prior art is polished by using a grinding wheel sheet, and the area of the grinding wheel sheet is relatively large, the fillet welding seam is relatively narrow, and the operation space is narrow, so that the base material near the welding seam is easily damaged during polishing, and in severe cases, the thickness of the connecting pipe is insufficient, and the connecting pipe is prone to rupture and leakage under pressure, causing safety hazards. According to the search, the patent with the application number 202020905627.2 discloses a boiler pressure vessel connecting pipe fillet welding seam polishing device, a main body, an accommodating groove is formed in the inner wall of the main body, a main shaft is rotatably connected to the inner wall of the main body, a polishing head is fixedly installed on the outer wall of the main shaft, the polishing head adopts a cylindrical and conical structure, and the conical tip of the polishing head is rounded, one side of the main body is provided with a handle fixed by bolts, and the other side of the main body is provided with a motor fixed by bolts, and the output shaft of the motor is connected with a second bevel gear through a key.

[0003] However, in actual use, the applicant found that the polishing head polishes the fillet welding seam of the connecting pipe by fixing the clasp ring on the connecting pipe, and since the structure of the clasp ring is fixed, it can only be applied to connecting pipes of one pipe diameter, so the polishing device cannot be applied to the polishing of fillet welding seams of connecting pipes of different pipe diameters. In view of this, we propose a boiler pressure vessel connecting pipe fillet welding seam polishing device. UTILITY MODEL CONTENTS

[0004] To solve the above technical problems, the utility model is realized by the following technical solutions:

[0005] The utility model discloses a kind of boiler pressure vessel pipe joint fillet welding polishing device, including upper U-shaped support and lower U-shaped support, the inner side of the upper U-shaped support and the inner side of lower U-shaped support are all fixedly connected with pipe joint clamping seat by bolt, the bottom of the upper U-shaped support is fixedly connected with connecting rod, the lower end of two connecting rods is movably penetrated the connecting through-hole of the top of lower U-shaped support symmetrically opened, and the lower end of connecting rod is screwed with nut, the front side of the upper U-shaped support and lower U-shaped support is fixedly connected with half-ring guide rail, two half-ring guide rails are spliced into a complete annular guide rail, the half-ring guide rail on top is slidably sleeved with sliding seat, the front side of the sliding seat is slidably connected with mounting seat, the inside of the sliding seat is rotatably connected with screw rod by bearing, the tail end of the screw rod is screwed through mounting seat, the front end of the mounting seat is fixedly provided with polishing motor, the output end of the polishing motor is fixedly connected with weld joint polishing head, the top of the sliding seat is threadedly connected with driving element.

[0006] Preferably, the driving element includes a stud, the lower end of the stud is screwed into the thread groove opened in the top of the sliding seat, the upper end of the stud is fixedly provided with a connector, the circumferential side wall of the connector is fixedly connected with a handle, the outside of the handle is rotatably connected with a handle sleeve.

[0007] Preferably, the front side of the sliding seat is provided with a guide sliding groove, the rear end of the mounting seat is provided with a guide sliding block, and the guide sliding block slides along the guide sliding groove.

[0008] Preferably, the upper end of the screw rod extends to the outside of the sliding seat and is sleeved and fixed with an adjusting handle.

[0009] Preferably, the top of the inner side of the upper U-shaped support and the bottom of the inner side of the lower U-shaped support are both provided with a T-shaped connecting groove, the pipe joint clamping seat is provided with a T-shaped connecting block at a position away from the arc surface, and the T-shaped connecting block is connected with the T-shaped connecting groove.

[0010] Preferably, the top of the upper U-shaped support and the bottom of the lower U-shaped support are both screwed with a bolt, and the T-shaped connecting block is provided with a threaded hole matched with the bolt.

[0011] The utility model has the following beneficial effects:

[0012] The utility model discloses a kind of boiler pressure vessel pipe joint fillet welding polishing device, by the pipe joint clamping seat of being fixed with pipe joint on the inner side of upper U-shaped support and lower U-shaped support, can be fixed on the pipe joint of different pipe diameter with polishing device, by rotating screw rod, mounting seat is adjusted along with polishing motor moves up and down, can make weld joint polishing head and the pipe joint fillet welding of being contacted effectively, so as to be able to realize the polishing of the pipe joint fillet welding of different pipe diameter, more practical, by the driving element set, weld joint polishing head can be conveniently driven by personnel and be rotated around half-ring guide rail and be quickly polished to the pipe joint fillet welding. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Fig. 1 This is a rear view structural schematic diagram of a boiler pressure vessel nozzle fillet weld grinding device according to the present invention.

[0015] Fig. 2 This is a front view structural schematic diagram of a boiler pressure vessel nozzle fillet weld grinding device according to the present invention.

[0016] Fig. 3 This is a schematic diagram of the drive component in a boiler pressure vessel nozzle fillet weld grinding device of this utility model.

[0017] The attached diagram lists the components represented by each number as follows:

[0018] 1. Upper U-shaped support; 2. Lower U-shaped support; 3. T-shaped connecting groove; 4. Pipe clamping seat; 41. T-shaped connecting block; 5. Bolt; 6. Connecting rod; 7. Nut; 8. Semi-circular guide rail; 9. Slide; 10. Screw; 101. Adjusting handle; 11. Mounting seat; 12. Grinding motor; 13. Weld grinding head; 14. Drive component; 141. Stud; 142. Connector; 143. Handle; 144. Handle sleeve. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figs. 1-3 As shown, this utility model provides a technical solution:

[0021] The utility model provides a kind of boiler pressure vessel nozzle fillet welding polishing device, including upper U-shaped support 1 and lower U-shaped support 2, the inner side of upper U-shaped support 1 is fixedly connected with nozzle clamping seat 4 by bolt 5 with the inner side of lower U-shaped support 2, the top of upper U-shaped support 1 inside and the bottom of lower U-shaped support 2 inside are all provided with T-shaped connecting groove 3, nozzle clamping seat 4 is provided with T-shaped connecting block 41 away from arc surface position, and T-shaped connecting block 41 is connected with T-shaped connecting groove 3, the top of upper U-shaped support 1 and the bottom of lower U-shaped support 2 are all screwed with bolt 5, T-shaped connecting block 41 is provided with the threaded hole matched with bolt 5, the bottom of upper U-shaped support 1 is fixedly connected with connecting rod 6, the lower end of two connecting rods 6 is movably penetrated the connecting through hole symmetrically provided in the top of lower U-shaped support 2, and the lower end of connecting rod 6 is screwed with nut 7, the front side of upper U-shaped support 1 and lower U-shaped support 2 is fixedly connected with half-ring guide rail 8, two half-ring guide rails 8 are spliced into a complete annular guide rail, the upper half-ring guide rail 8 is slidably sleeved with sliding seat 9, the front side of sliding seat 9 is slidably connected with mounting seat 11, the front side of sliding seat 9 is provided with guide sliding slot, the rear end of mounting seat 11 is provided with guide sliding block, and guide sliding block slides along guide sliding slot, the inside of sliding seat 9 is rotatably connected with screw rod 10 by bearing, screw rod 10 is screwed into the tail end of mounting seat 11, the upper end of screw rod 10 extends to the outside of sliding seat 9 and is sleeved with adjusting handle 101, the front end of mounting seat 11 is fixedly provided with polishing motor 12, polishing motor 12 can be powered by the battery fixed in the inside of mounting seat 11, and the battery is not shown in the figure, the bottom of screw rod 10 is provided with battery placing groove, and the battery can be disassembled and replaced, the output end of polishing motor 12 is fixedly connected with weld polishing head 13, by being fixed with nozzle clamping seat 4 matched with nozzle on the inner side of upper U-shaped support 1 and lower U-shaped support 2, the polishing device can be fixed on nozzle of different pipe diameter, the weld polishing head 13 can be effectively contacted with the nozzle fillet welding to be connected by rotating screw rod 10 to drive mounting seat 11 to move up and down together with polishing motor 12, so that the polishing device can be used for polishing nozzle fillet welding of different pipe diameter, and the practicability is stronger, when polishing nozzle fillet welding of boiler pressure vessel, the nozzle clamping seat 4 matched with nozzle can be selected according to the pipe diameter, and T-shaped connecting block 41 on nozzle clamping seat 4 is aligned and slid into T-shaped connecting groove 3 on upper U-shaped support 1, then bolt 5 on upper U-shaped support 1 is manually screwed, so that bolt 5 is screwed into the threaded hole on T-shaped connecting block 41, and then the nozzle clamping seat 4 can be fixed on upper U-shaped support 1, another nozzle clamping seat 4 is fixed on lower U-shaped support 2 by using the same way, then upper U-shaped support 1 and lower U-shaped support 2 are sleeved on nozzle, so that connecting rod 6 penetrates lower U-shaped support 2, and the lower end of connecting rod 6 is locked by nut 7, at this time, the device can be sleeved and fixed on nozzle by the close adhesion of two nozzle clamping seats 4 and nozzle, during the fixing process, the position of upper U-shaped support 1 can be adjusted,When the weld joint polishing head 13 is as close as possible to the outer wall of the boiler pressure vessel above the connecting pipe, the two half-ring guide rails 8 on the front side can be spliced into a complete ring guide rail, at this time the polishing motor 12 is started, and the rotation of the polishing motor 12 can drive the weld joint polishing head 13 to rotate, then the adjusting handle 101 is manually rotated clockwise to drive the screw rod 10 to rotate, the rotation of the screw rod 10 drives the mounting base 11 to move downward, the downward movement of the mounting base 11 can drive the polishing motor 12 and the weld joint polishing head 13 to move downward, until the weld joint polishing head 13 can successfully polish the fillet weld of the connecting pipe, the rotation of the screw rod 10 is stopped, then the slide base 9 can be manually actuated to slide along the half-ring guide rail 8, which can drive the weld joint polishing head 13 to make a circular motion around the connecting pipe, that is, the weld joint polishing head 13 can successfully polish the fillet weld of the connecting pipe.

[0022] The top of the slide base 9 is threadedly connected with a driving member 14, the driving member 14 includes a stud 141, the lower end of the stud 141 is threadedly screwed into the threaded groove formed in the top of the slide base 9, the upper end of the stud 141 is fixedly provided with a connecting head 142, the peripheral sidewall of the connecting head 142 is fixedly connected with a handle 143, the outer portion of the handle 143 is rotatably connected with a grip sleeve 144, through the driving member 14, personnel can drive the weld joint polishing head 13 to rotate around the half-ring guide rail 8 to quickly polish the fillet weld of the connecting pipe, after the device is fixed on the connecting pipe, then the stud 141 is threadedly screwed on the top of the slide base 9, that is, the driving member 14 is fixed on the slide base 9, personnel can hold the grip sleeve 144 by hand, drive the slide base 9 to slide along the half-ring guide rail 8 through the driving member 14, drive the weld joint polishing head 13 to rotate around the connecting pipe, and polish the fillet weld of the connecting pipe.

[0023] Working principle: when using, when polishing the angle weld of the boiler pressure vessel connecting pipe, the connecting pipe clamping seat 4 can be selected according to the pipe diameter, the T-shaped connecting block 41 on the connecting pipe clamping seat 4 is aligned and slid into the T-shaped connecting groove 3 on the upper U-shaped support 1, then the bolt 5 on the upper U-shaped support 1 is manually screwed, the bolt 5 is screwed into the threaded hole on the T-shaped connecting block 41, the connecting pipe clamping seat 4 is fixed on the upper U-shaped support 1, another connecting pipe clamping seat 4 is fixed on the lower U-shaped support 2 in the same way, then the upper U-shaped support 1 and the lower U-shaped support 2 are sleeved on the connecting pipe, the connecting rod 6 penetrates through the lower U-shaped support 2 and is locked at the lower end by the nut 7, at this time, the device is fixed on the connecting pipe by the close fit of the two connecting pipe clamping seats 4 and the connecting pipe, during the fixing process, the position of the upper U-shaped support 1 can be adjusted, so that the weld polishing head 13 can be as close as possible to the outer wall of the boiler pressure vessel above the connecting pipe, after the device is fixed on the connecting pipe, the stud 141 is screwed on the top of the sliding seat 9, the driving member 14 is fixed on the sliding seat 9, the two half-ring guide rails 8 on the front side can be spliced into a complete ring guide rail, at this time, the polishing motor 12 is started, the rotation of the polishing motor 12 can drive the weld polishing head 13 to rotate, then the adjusting handle 101 is manually rotated clockwise to drive the screw rod 10 to rotate, the screw rod 10 rotates to drive the mounting seat 11 to move downward, the downward movement of the mounting seat 11 can drive the polishing motor 12 and the weld polishing head 13 to move downward, until the weld polishing head 13 can polish the angle weld of the connecting pipe, the rotation of the screw rod 10 is stopped, then the personnel can hold the handle sleeve 144, drive the sliding seat 9 to slide along the half-ring guide rail 8 through the driving member 14, drive the weld polishing head 13 to make circular motion around the connecting pipe, and then the weld polishing head 13 can polish the angle weld of the connecting pipe.

[0024] The basic principle, main features and advantages of the utility model are shown and described in the specification, and the standard parts used in the utility model can be purchased from the market, the special-shaped parts can be ordered according to the description and drawings, and the specific connection mode of each part can adopt the conventional means such as bolt rivet, welding and the like in the prior art, and the machinery, parts and equipment can adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, and this part of content is not described in detail in the specification.

[0025] In the description of the specification, the description of the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0026] The above is only the preferred embodiment of the utility model, and does not limit the utility model, any modification to the technical scheme recorded in the foregoing embodiments, equivalent replacement to part of the technical features, all belong to the protection scope of the utility model.

Claims

1. A boiler pressure vessel nozzle corner weld polishing device characterized by: The utility model provides a welding seam polishing device, including upper U-shaped support (1) and lower U-shaped support (2), and the inner side of upper U-shaped support (1) is fixedly connected with the pipe clamp holder (4) through bolt (5) with the inner side of lower U-shaped support (2), the bottom of upper U-shaped support (1) is fixedly connected with the connecting rod (6) symmetrically, the lower end of two connecting rods (6) is movably penetrated the connecting through -hole that the top of lower U-shaped support (2) is symmetrically opened, and the lower end of connecting rod (6) is screwed with nut (7), the front side of upper U-shaped support (1) and lower U-shaped support (2) is fixedly connected with half ring guide rail (8), and two half ring guide rails (8) are spliced into a complete annular guide rail, and the half ring guide rail (8) on the top is slidably sleeved with sliding seat (9), the front side of sliding seat (9) is slidably connected with mounting seat (11), the inside of sliding seat (9) is rotatably connected with screw rod (10) through bearing, the tail end of screw rod (10) is screwed through mounting seat (11), and the front end of mounting seat (11) is fixedly arranged with polishing motor (12) in the inclination, the output of polishing motor (12) is fixedly connected with weld polishing head (13), and the top of sliding seat (9) is screwedly connected with driving piece (14).

2. A boiler pressure vessel nozzle corner weld polishing apparatus according to claim 1, wherein, The driving piece (14) includes stud (141), the lower end of the stud (141) is screwed into the threaded groove in the top of the sliding seat (9), the upper end of the stud (141) is fixedly provided with a connector (142), the peripheral sidewall of the connector (142) is fixedly connected with a handle (143), and the outer portion of the handle (143) is rotatably connected with a grip sleeve (144).

3. A boiler pressure vessel nozzle corner weld polishing apparatus as claimed in claim 1, wherein, The front side of the sliding seat (9) is provided with a guide sliding groove, the rear end of the mounting seat (11) is provided with a guide sliding block, and the guide sliding block slides along the guide sliding groove.

4. A boiler pressure vessel nozzle corner weld polishing apparatus as claimed in claim 1, wherein, The upper end of the screw rod (10) extends to the outside of the sliding seat (9) and is sleeved and fixed with an adjusting handle (101).

5. A boiler pressure vessel nozzle corner weld polishing apparatus as claimed in claim 1, wherein, The top of the inner side of the upper U-shaped support (1) and the bottom of the inner side of the lower U-shaped support (2) are both provided with a T-shaped connecting groove (3), the T-shaped connecting block (41) is arranged at a position away from the arc surface of the pipe clamp holder (4), and the T-shaped connecting block (41) is connected with the T-shaped connecting groove (3) in cooperation.

6. A boiler pressure vessel nozzle corner weld polishing apparatus according to claim 5, wherein, The top of the upper U-shaped support (1) and the bottom of the lower U-shaped support (2) are screwedly connected with bolts (5), and the T-shaped connecting block (41) is provided with a threaded hole matched with the bolt (5).

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