CN219767836U

CN219767836U - Annular polishing device for connecting pipe of pressure vessel

Info

Publication number: CN219767836U
Application number: CN202320887706.9U
Authority: CN
Inventors: 刘大鹏; 武效强; 王秀坤
Original assignee: Qingdao Hairun Norda Industrial Equipment Co ltd
Current assignee: Qingdao Hairun Norda Industrial Equipment Co ltd
Priority date: 2023-04-19
Filing date: 2023-04-19
Publication date: 2023-09-29
Anticipated expiration: 2033-04-19

Abstract

The utility model relates to a pressure container connecting pipe annular polishing device which comprises a base, a supporting frame for placing a pressure container connecting pipe, a driving part for driving the connecting pipe to rotate, a polishing machine and an adjusting part for adjusting the position of the polishing machine, wherein the adjusting part comprises a mounting frame, the mounting frame is connected to the base, the polishing machine is connected to the mounting frame, the mounting frame can drive the polishing machine to move towards multiple directions so as to abut against different positions of the connecting pipe, and the driving part can drive the connecting pipe placed on the supporting frame to rotate so that the polishing machine can butt against the connecting pipe along the rotating direction to polish. The polishing device can polish all the peripheral surfaces of the pressure vessel more accurately, reduces polishing errors and improves processing efficiency.

Description

Annular polishing device for connecting pipe of pressure vessel

Technical Field

The utility model relates to the field of pressure vessel processing, in particular to a pressure vessel connecting pipe annular polishing device.

Background

The pressure vessel is a closed vessel for holding gas or liquid and carrying a certain pressure therein, and is widely used in the petroleum industry and chemical industry. The container wall of the pressure container is usually welded with a connecting pipe, the connecting pipe is used for feeding, discharging and other functions, the two ends of the connecting pipe of the pressure container are welded with connecting flanges, and double-side welding is usually required for guaranteeing the stability of the connecting flanges.

The connecting pipe of the existing pressure vessel needs to carry out polishing treatment on the outer peripheral wall of the connecting pipe, particularly the welding position of the connecting flange and the connecting pipe of the pressure vessel before being connected to the side wall of the pressure vessel, so as to prevent the connecting position of the connecting pipe and the pressure vessel from generating gaps to influence the pressurization in the pressure vessel and cause danger. The adapter is usually fixed to the support and polished by a hand-held manual polisher along the peripheral wall of the adapter and at the weld location of the connecting flange.

For the prior art, the inventor finds that when the existing connecting pipe of the pressure container is used for polishing, a manual handheld polishing machine is needed for polishing, the polishing position is completely dependent on the position of a human hand, a missing polishing area and a repeated polishing area are easy to occur, the labor intensity of the long-time operation of the hands of a user in the polishing process is high, the force of the user pushing the polishing machine to be abutted against the peripheral wall of the connecting pipe is also changed, and the polishing degrees of the polishing areas are different.

Disclosure of Invention

In order to polish all the peripheral surfaces of the pressure vessel more accurately, reduce the error of manual hand-held polishing and improve the processing efficiency, the utility model provides the annular polishing device for the connecting pipe of the pressure vessel.

The utility model provides a pressure vessel connecting pipe annular polishing device which adopts the following technical scheme:

the utility model provides a ring-shaped burnishing device is taken over to pressure vessel, includes the base, is used for laying the support frame that pressure vessel taken over, is used for driving take over pivoted actuating part, burnishing machine and is used for adjusting the adjusting part of burnishing machine position, and adjusting part includes the mounting bracket, the mounting bracket is connected in the base, the burnishing machine is connected in the mounting bracket, thereby the mounting bracket can drive the burnishing machine to remove towards a plurality of directions and contradict in take over different positions, and actuating part can drive to lay the take over rotation at the support frame and make the burnishing machine carry out polishing along rotation direction butt joint pipe.

Through adopting above-mentioned technical scheme, when the user uses, the user lays the support frame with pressure vessel's takeover, afterwards the user operates adjusting part and makes adjusting part drive the burnishing machine be close to pressure vessel's region that needs to polish, make burnishing machine polishing end conflict in pressure vessel's takeover, afterwards the user opens the burnishing machine and operates drive unit, drive unit drives pressure vessel's takeover rotation, the burnishing machine is polished the takeover outer wall along the rotation route with the takeover, the user continues to change the conflict position of burnishing machine through operating adjusting part after the takeover rotates a week and accomplishes the polishing of polishing region to gradually accomplish the polishing to takeover needs, the whole in-process need not the handheld burnishing machine operation of workman and has saved the manpower while also reduced the polishing error that the burnishing machine is contradicted in the strength change of takeover and is caused because of burnishing machine in the polishing process.

Optionally, the support frame is connected in the base, and base and support frame are connected with a plurality of stiffening ribs jointly, and the stiffening rib is used for supporting the support frame, and the support frame top switching has a plurality of support rollers that have elasticity, and the axial of support roller and the axial syntropy setting of takeover, every support roller all can contradict in the periphery wall of takeover.

Through adopting above-mentioned technical scheme, when the user uses, the user lays pressure vessel's takeover on the support frame, and the support frame plays the effect of lifting and supporting the takeover, and the stiffening rib plays the structure that supports the support frame, prevents to warp owing to the support frame that the takeover is overweight to lead to, and the backing roll plays the effect of reducing the friction when takeover rotation between takeover surface and the support frame.

Optionally, the drive part is including installing driving motor and a plurality of drive seat at the base, and every drive seat has all been converted the drive wheel, and the axial of every drive wheel all with the axial syntropy setting of takeover, the takeover can conflict in every drive wheel, and the drive wheel rotates and can drive the takeover and rotate, and every drive wheel all is connected in driving motor, and driving motor can drive every drive wheel syntropy rotation.

Through adopting above-mentioned technical scheme, when the user uses, the user lays the takeover of pressure vessel on a plurality of drive wheel, makes the takeover conflict in every drive wheel, later the user opens driving motor, and driving motor drives every drive wheel and rotates towards the same direction to drive the takeover along the opposite direction rotation with the drive wheel, make the polisher can all process each position of the weekend of takeover through the rotation of takeover, further enlarged the scope of polishing processing, simplified the flow of polishing processing.

Optionally, the adjusting part still includes lifter sleeve and lifter, and the lifter sleeve is connected in the base, and the axial perpendicular to base setting of lifter sleeve, lifter switching in the inner peripheral wall of lifter sleeve, lifter one end threaded connection in the mounting bracket, the mounting bracket corresponds lifter both sides position department and all slides and be equipped with the guide bar, and the guide bar is connected in the base, the axial of guide bar and the axial parallel arrangement of lifter, and the axial slip of guide bar can be followed to the mounting bracket.

Through adopting above-mentioned technical scheme, when the user uses, the user rotates the lifting screw, and the mounting bracket can't rotate thereupon owing to the blockking of two guide bars, therefore lifting screw rotates and drives threaded connection in the mounting bracket of self along lifting screw's length direction ascending or decline to adjust the height of installing the burnishing machine on the mounting bracket, make the burnishing machine can carry out polishing to the takeover of different diameters, increased burnishing device's application scope.

Optionally, the adjusting part still includes the installation slider, the burnishing machine passes through screw connection in the installation slider, the installation slider slides and locates the mounting bracket, and the installation slider can follow the mounting bracket and take over the direction and slide, the pneumatic cylinder is still installed to the mounting bracket, and the hydraulic stem of pneumatic cylinder is connected in the installation slider, and the piston rod of pneumatic cylinder can promote the installation slider and take over the direction and slide.

Through adopting above-mentioned technical scheme, when the user uses, the pneumatic cylinder is opened to the user, and the hydraulic stem of pneumatic cylinder drives the installation slider and slides along the mounting bracket to pressure vessel's takeover direction and be close to, makes the burnishing machine of connecting in the installation slider contradict in takeover, and the cooperation of pneumatic cylinder, installation slider and mounting bracket plays the effect of adjusting the position distance between burnishing machine and the takeover, cooperates with the lifting screw and makes the burnishing machine can be applicable to the takeover of different diameters to can be applicable to the takeover surface and be provided with the inhomogeneous condition of various spare part distributions.

Optionally, the adjusting part still includes the slide, and the slide level sets up, and the spout has been seted up to the base, and the axial setting of takeover is followed to the length direction of spout, and the slide is close to base one side and is connected with the slide roll, and the axial perpendicular to base setting of slide roll, slide roll are located the spout of base, and the slide roll can slide along the length direction of spout in the spout of base, and the mounting bracket is connected in the slide, and the slide roll can drive the slide and then drive mounting bracket and burnishing machine and slide along the length direction of spout at the base.

Through adopting above-mentioned technical scheme, when the user uses, the user slides the slide along the length direction of the spout of base, and the slide roll slides along the length direction of spout in the spout of base to drive the slide and slide, finally drive mounting bracket and burnishing machine along the length direction of spout removal, can follow the axial adjustment burnishing machine's of takeover position, and then adjust the polishing region of burnishing machine.

Optionally, the base has seted up the switching-over arc groove, and the switching-over arc groove is circular-arc, and the arc mouth is towards taking over the setting, and the spout of base is linked together with the switching-over arc groove, and the width of base equals with the width of switching-over arc groove, and the slide roll can slide along the spout of base and get into the switching-over arc groove.

Through adopting above-mentioned technical scheme, when the user uses, the user drives the slide and slides along the spout of base and get into the switching-over arc groove through sliding the slide, and the slide takes place to turn to when getting into the switching-over arc groove to drive mounting bracket and burnishing machine and take place to turn to, make originally along the burnishing machine of the peripheral wall of horizontal direction orientation takeover become along the flange at the axial orientation takeover both ends of takeover, thereby realize adjusting the burnishing machine to the flange position department butt joint pipe both ends at takeover both ends with the burnishing machine and carry out polishing treatment, further increase the operating range of burnishing machine.

Optionally, slide threaded connection has a plurality of locking bolt, and locking bolt passes the slide setting, and locking bolt can contradict in the base setting.

Through adopting above-mentioned technical scheme, when the user uses, the user rotates locking bolt, makes locking bolt pass the slide and contradict in the base, and locking bolt plays the effect that stops the slide and continue to remove this moment, prevents that the spontaneous emergence of slide from sliding in polishing process, influences polishing process's precision.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. the design of the base, the support frame, the support roller, the driving part, the driving seat, the driving motor, the driving connecting rod, the driving wheel, the polishing machine and the mounting frame can drive the connecting pipe to rotate around the axis of the connecting pipe so that the polishing machine can uniformly polish the peripheral surface of the connecting pipe, each peripheral surface of the pressure vessel can be polished more accurately, the error of manual handheld polishing is reduced, and the processing efficiency is improved;

2. the position of the polishing machine can be adjusted along a plurality of directions by the aid of the design of the adjusting part, the sliding groove, the reversing arc groove, the lifting screw, the lifting rod sleeve, the guide rod, the mounting sliding block, the sliding seat, the sliding roller and the mounting rack, so that the positions of the butt joint pipes can be flexibly polished, the connecting pipes are not required to be adjusted, the use is flexible and convenient, and meanwhile, the labor is saved;

3. the design of slide, pneumatic cylinder and locking bolt plays the effect of fixed slide, prevents to take place to remove in the burnishing machine working process, plays the effect that improves machining precision.

Drawings

FIG. 1 is a schematic overall structure of an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a drive gear box structure of an embodiment of the present utility model;

FIG. 3 is a schematic view of a support frame according to an embodiment of the present utility model;

fig. 4 is a cross-sectional view of a mounting structure according to an embodiment of the present utility model.

Reference numerals illustrate: 1. a base; 11. a chute; 12. reversing arc grooves; 2. a support frame; 21. reinforcing ribs; 22. a support roller; 3. a driving part; 31. a driving motor; 32. a driving seat; 33. a driving wheel; 34. a drive link; 35. driving the gear box; 4. polishing machine; 5. an adjusting member; 51. a mounting frame; 52. lifting screw rods; 53. a lifting rod sleeve; 54. a guide rod; 55. installing a sliding block; 56. a hydraulic cylinder; 57. a slide; 571. a slide roller; 572. a fixed shaft; 58. a support base; 59. and (5) locking the bolt.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-4.

The embodiment of the utility model discloses an annular polishing device for a pressure container connecting pipe, which comprises a base 1 and a polishing machine 4, wherein a support frame 2 is fixedly connected at the middle position of the base 1 corresponding to the base 1, the support frame 2 is used for placing the connecting pipe of the pressure container, the length direction of the support frame 2 is arranged along the width direction of the base 1, a plurality of reinforcing ribs 21 are fixedly connected at the outer side of the base 1 corresponding to the support frame 2, and the reinforcing ribs 21 play a role in supporting the support frame 2. The support frame 2 is close to the top and is close to both sides position department along self length direction and all switches and has elastic backing roll 22, and the axial of backing roll 22 sets up along the length direction of support frame 2, and pressure vessel's takeover can be laid between a plurality of backing rolls 22, and the axial of takeover and the axial syntropy setting of backing roll 22, the periphery wall of takeover can conflict in every backing roll 22. The base 1 is provided with driving parts 3 corresponding to the two sides of the support frame 2, and the driving parts 3 can drive the connecting pipe of the pressure vessel to axially rotate around the connecting pipe. The base 1 is close to support frame 2 position department still is provided with adjusting part 5, and burnishing machine 4 is connected in adjusting part 5, and adjusting part 5 can drive burnishing machine 4 to remove in the different positions of takeover towards different directions.

Referring to fig. 2 and 3, the driving part 3 includes four driving seats 32, the four driving seats 32 are respectively and fixedly connected to the four corners of the base 1 corresponding to the supporting frame 2, and the supporting frame 2 is located between the four driving seats 32. The top of each driving seat 32 is connected with a driving wheel 33 in a switching way, and the axial direction of the driving wheel 33 and the axial direction of the supporting roller 22 are arranged in the same direction. The connecting flanges at the two ends of the connecting pipe are respectively positioned at the positions, close to the two sides, of the supporting frame 2 along the length direction of the supporting frame, and the connecting flanges at any end of the connecting pipe can be abutted against the two driving wheels 33 positioned at the same side of the supporting frame 2. Every two drive wheels 33 which are positioned on the same side of the support frame 2 along the width direction of the support frame 2 are connected with a drive connecting rod 34 in an inserted mode, the drive connecting rod 34 penetrates through the drive wheels 33, and the corresponding two drive wheels 33 can be driven to rotate by rotation of the drive connecting rod 34. One end of each of the two driving connecting rods 34 is connected with a driving gear box 35 in a plugging mode, the input end of each driving gear box 35 is connected with a driving motor 31, and the driving motors 31 can drive the driving gear boxes 35 to rotate so as to drive the two driving connecting rods 34 to rotate in the same direction.

When the polishing machine is used by a user, the user adjusts the polishing machine 4 to a position which is abutted against the connecting pipe and is required to be polished through the adjusting part 5, so that the polishing end of the polishing machine 4 is abutted against the welding seam position of the connecting pipe and the connecting flange, and the welding seam position of the uneven peripheral wall of the connecting pipe is polished. After that, the user starts the driving motor 31, and the driving motor 31 drives the two driving connecting rods 34 to rotate through the driving gear box 35, so that the two driving connecting rods 34 drive the four driving wheels 33 to rotate in the same direction together, and then the four driving wheels 33 drive the connecting pipe to rotate together, the polishing machine 4 polishes the peripheral wall of the connecting pipe along with the rotation of the connecting pipe, the user does not need to manually overturn the connecting pipe, and the effect of saving people is achieved.

Referring to fig. 2-4, a chute 11 is formed in a position, close to the support frame 2, of the base 1, the length direction of the chute 11 is set along the length direction of the support frame 2, reversing arc grooves 12 are formed in positions, corresponding to the two ends of the chute 11, of the base 1, each reversing arc groove 12 is communicated with the chute 11 of the base 1, and the width of the chute 11 is equal to that of the reversing arc grooves 12. The reversing arc groove 12 is arc-shaped, an arc opening is arranged towards the support frame 2, and the central angle corresponding to the reversing arc groove 12 is 90 degrees. The adjusting part 5 comprises a sliding seat 57, a fixed shaft 572 is fixedly connected to the bottom of the sliding seat 57, the axial direction of the fixed shaft 572 is perpendicular to the base 1, and the fixed shaft 572 is located in a sliding groove 11 of the base 1. A slide roller 571 is rotatably connected to the fixed shaft 572, and the slide roller 571 is rotatable around the fixed shaft 572, and the slide roller 571 is slidably connected to the slide groove 11 of the base 1. The top of the sliding seat 57 is fixedly connected with a lifting rod sleeve 53 corresponding to the middle position of the sliding seat 57, the axial direction of the lifting rod sleeve 53 is perpendicular to the sliding seat 57, the lifting rod sleeve 53 is rotationally connected with a lifting screw 52, and the lifting screw 52 and the lifting rod sleeve 53 are coaxially arranged. The lifting screw 52 is correspondingly connected with the mounting frame 51 through threads at the position above the lifting screw sleeve 53, the length direction of the mounting frame 51 is set along the length direction of the supporting frame 2, and the lifting screw 52 can drive the mounting frame 51 to ascend and descend along the axial direction of the lifting screw 52 through rotation. The mounting bracket 51 corresponds lifting screw 52 both sides position department all slides and is equipped with guide bar 54, and mounting bracket 51 can slide along the length direction of guide bar 54, and guide bar 54 one end rigid coupling is in slide 57, and the length direction of two guide bars 54 all sets up with lifting screw 52's axial mutual parallel, and two guide bars 54 set up with lifting screw 52 symmetry.

Referring to fig. 2-4, a supporting seat 58 is fixedly connected to the bottom of the mounting frame 51, the cross section of the supporting seat 58 is in a right-angle triangle shape, the corresponding surfaces of the two right-angle sides are respectively located at the positions close to the bottom of the mounting frame 51 and the position close to the lifting screw 52, the lifting screw 52 is in threaded connection with the supporting seat 58, and the length direction of the supporting seat 58 is set along the length direction of the mounting frame 51. The top of the mounting frame 51 is slidably provided with a mounting slide block 55, the mounting slide block 55 can slide along the length direction of the mounting frame 51, and the cross section of the mounting slide block 55 is in an inverted U shape. The polisher 4 is mounted on top of the mounting slide 55 by screws. The mounting bracket 51 is kept away from the support frame 2 position department and is connected with the pneumatic cylinder 56 through the bolt, and the piston rod of pneumatic cylinder 56 passes through the screw connection in the one side that the installation slider 55 kept away from support frame 2, and pneumatic cylinder 56 can promote the installation slider 55 to slide along the length direction of mounting bracket 51. The slide 57 is provided with locking bolts 59 corresponding to four angular positions of the slide 57 in a threaded connection mode, the locking bolts 59 penetrate through the slide 57, and the locking bolts 59 can be abutted against the base 1.

The implementation principle of the annular polishing device for the connecting pipe of the pressure vessel provided by the embodiment of the utility model is as follows: the user places the takeover that needs to polish to handle on support frame 2, makes the axial of takeover set up with the length direction mutually perpendicular of support frame 2, makes the peripheral wall of takeover conflict in every backing roll 22 to make the flange that is located the takeover both ends conflict respectively in the drive wheel 33 of support frame 2 both sides, make drive wheel 33 rotate and can drive the takeover and rotate around self axis, backing roll 22 and support frame 2 then play the effect of supporting the takeover. Then, the user first slides the slide seat 57 along the length direction of the sliding groove 11 to adjust the position of the slide seat 57 along the width direction of the base 1, so that the position of the polishing machine 4 is adjusted along the width direction of the base 1, and after the polishing machine is adjusted to a proper position, the user screws each locking bolt 59, so that each locking bolt 59 abuts against the base 1 to fix the slide seat 57. Then, the user rotates the lifting screw 52, so that the lifting screw 52 drives the supporting seat 58 and the mounting frame 51 to slide along the axial direction of the lifting screw 52, namely, the direction vertical to the base 1, and accordingly, the height position of the polishing machine 4 is adjusted along the direction vertical to the base 1, and the supporting seat 58 plays a role in supporting the mounting frame 51. Finally, the user opens the hydraulic cylinder 56, so that the hydraulic cylinder 56 pushes the installation sliding block 55 to slide towards the connecting pipe direction along the length direction of the installation frame 51, and accordingly the polishing machine 4 is driven to slide towards the connecting pipe direction, the polishing end of the polishing machine 4 is abutted against the peripheral wall of the connecting pipe, and the connecting pipe can be polished. The user opens the burnishing machine 4 and opens driving motor 31 simultaneously, driving motor 31 passes through drive gearbox 35 and drive connecting rod 34 and drives the drive wheel 33 of support frame 2 both sides and syntropy rotation, thereby drive the takeover of laying on drive wheel 33 and rotate around self axis, along with the rotation of takeover make burnishing machine 4 to all polish around the global of contradicting in takeover position to the takeover of takeover department, the whole process user need not the manual operation burnishing machine 4 and polishes the pipe global, avoided the precision error of polishing because the application of force size is different to lead to, also need not the manual work simultaneously to trade the face, the manual consumption has been reduced. When the user needs to polish the flange positions at two ends of the connecting pipe, the user only needs to slide the sliding seat 57 and the sliding roller 571 along the sliding groove 11 into the reversing arc groove 12, at this time, the polishing end of the polishing machine 4 faces the flange of the connecting pipe, the user only needs to fix the sliding seat 57 again, adjust the hydraulic cylinder 56 to enable the polishing end of the polishing machine 4 to abut against the flange of the connecting pipe, then start the driving motor 31 to polish the flange at one end of the connecting pipe, manual reversing is not needed, machining accuracy is further guaranteed, and meanwhile labor cost is reduced.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides a ring-shaped burnishing device is taken over to pressure vessel which characterized in that: including base (1), be used for laying support frame (2) that pressure vessel taken over, be used for driving takeover pivoted drive unit (3), burnishing machine (4) and be used for adjusting part (5) of burnishing machine (4) position, adjusting part (5) include mounting bracket (51), mounting bracket (51) are connected in base (1), burnishing machine (4) are connected in mounting bracket (51), thereby mounting bracket (51) can drive burnishing machine (4) to move towards a plurality of directions and contradict in takeover different positions, and thereby drive unit (3) can drive and lay takeover rotation at support frame (2) make burnishing machine (4) carry out polishing along rotation direction butt joint pipe.

2. A pressure vessel nipple annular polishing apparatus as defined in claim 1 wherein: the support frame (2) is connected in base (1), and base (1) and support frame (2) are connected with a plurality of stiffening ribs (21) jointly, and stiffening rib (21) are used for supporting support frame (2), and support frame (2) top switching has a plurality of backing rolls (22) that have elasticity, and the axial of backing roll (22) and the axial syntropy setting of takeover, every backing roll (22) all can contradict in the periphery wall of takeover.

3. A pressure vessel nipple annular polishing apparatus as defined in claim 1 wherein: the driving component (3) comprises a driving motor (31) and a plurality of driving seats (32) which are arranged on the base (1), each driving seat (32) is connected with a driving wheel (33) in a switching mode, the axial direction of each driving wheel (33) is in same-direction with the axial direction of the connecting pipe, the connecting pipe can abut against each driving wheel (33), the driving wheels (33) rotate to drive the connecting pipe to rotate, each driving wheel (33) is connected to the driving motor (31), and the driving motor (31) can drive each driving wheel (33) to rotate in the same direction.

4. A pressure vessel nipple annular polishing apparatus as defined in claim 1 wherein: the adjusting part (5) further comprises a lifting rod sleeve (53) and lifting screws (52), the lifting rod sleeve (53) is connected to the base (1), the axial direction of the lifting rod sleeve (53) is perpendicular to the base (1), the lifting screws (52) are connected to the inner peripheral wall of the lifting rod sleeve (53), one ends of the lifting screws (52) are connected to the mounting frame (51) in a threaded mode, guide rods (54) are arranged on the mounting frame (51) in a sliding mode at positions, corresponding to the two sides of the lifting screws (52), of the mounting frame (51), the guide rods (54) are connected to the base (1), the axial direction of the guide rods (54) is parallel to the axial direction of the lifting screws (52), and the mounting frame (51) can slide along the axial direction of the guide rods (54).

5. The pressure vessel nozzle ring polishing apparatus as set forth in claim 4, wherein: the adjusting part (5) further comprises a mounting sliding block (55), the polishing machine (4) is connected to the mounting sliding block (55) through screws, the mounting sliding block (55) is slidably arranged on the mounting frame (51), the mounting sliding block (55) can slide along the mounting frame (51) towards the direction of the connecting pipe, the mounting frame (51) is further provided with a hydraulic cylinder (56), a piston rod of the hydraulic cylinder (56) is connected to the mounting sliding block (55), and a hydraulic rod of the hydraulic cylinder (56) can push the mounting sliding block (55) to slide towards the direction of the connecting pipe.

6. A pressure vessel nipple annular polishing apparatus as defined in claim 1 wherein: the adjusting part (5) further comprises a sliding seat (57), the sliding seat (57) is horizontally arranged, the base (1) is provided with a sliding groove (11), the length direction of the sliding groove (11) is axially arranged along the connecting pipe, the sliding seat (57) is connected with a sliding roller (571) close to one side of the base (1), the sliding roller (571) is axially perpendicular to the base (1), the sliding roller (571) is located in the sliding groove (11) of the base (1), the sliding roller (571) can slide along the length direction of the sliding groove (11) in the sliding groove (11) of the base (1), the mounting frame (51) is connected to the sliding seat (57), and the sliding roller (571) can drive the sliding seat (57) to further drive the mounting frame (51) and the polishing machine (4) to slide along the length direction of the sliding groove (11) in the base (1).

7. The pressure vessel nozzle ring polishing apparatus as set forth in claim 6, wherein: the base (1) is provided with a reversing arc groove (12), the reversing arc groove (12) is arc-shaped, an arc opening faces towards the connecting pipe, a sliding groove (11) of the base (1) is communicated with the reversing arc groove (12), the width of the base (1) is equal to that of the reversing arc groove (12), and the sliding roller (571) can slide along the sliding groove (11) of the base (1) to enter the reversing arc groove (12).

8. The pressure vessel nozzle ring polishing apparatus as set forth in claim 7, wherein: the sliding seat (57) is in threaded connection with a plurality of locking bolts (59), the locking bolts (59) penetrate through the sliding seat (57) to be arranged, and the locking bolts (59) can be abutted against the base (1).