Round weld bead polishing device for reactor internals

Abstract

The utility model discloses a round weld bead polishing device for reactor internals, which comprises a round cover, the center of the upper surface of the round cover is fixedly connected with a handle, and a polishing unit is arranged below the round cover. According to the round weld bead polishing device for the reactor internal part, through cooperation of a round cover and a polishing unit, firstly, a production worker sequentially sleeves the outer side of a welding part with a vertical cylinder and the round cover, a polishing head is made to be connected with a to-be-polished round weld bead, a handle is held by a hand to start a motor, and a rotating rod and a tooth column are made to rotate; during the grinding process, the tooth column can perform meshing transmission on the convex tooth ring, so that the convex tooth ring, the vertical cylinder and the lantern ring can rotate, in the process, the multiple grinding heads can rotate around the vertical cylinder as the center, after the grinding heads make contact with the circular welding bead, grinding work can be performed on the circular welding bead, production workers do not need to frequently adjust the body position for many times during the grinding work, and the production efficiency is improved. And therefore, the grinding work efficiency is improved, and the physical effect is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogenation reactors, in particular to a circular weld bead grinding device for reactor internals. Background Art

[0002] Hydrogenation reactors first appeared in the 1950s. With the development of the petroleum industry, their technology and applications have continued to improve. Especially in the context of global energy transformation, hydrogenation reactors play an important role in promoting the green energy revolution and developing the hydrogen economy. The working principle of hydrogenation reactors is to adsorb hydrogen molecules to generate active hydrogen atoms through the action of catalysts, and then add to the ene and yne of the bonds weakened by the catalyst, thereby changing the molecular structure of the raw materials. This process is usually carried out in a high temperature and high pressure environment to reduce the activation energy of the reaction and improve the reaction efficiency.

[0003] There are many important components distributed inside the hydrogenation reactor, among which the liquid distribution plate is one of the important components in the hydrogenation reactor. It can ensure that the liquid is evenly distributed in the reactor and improve the heat transfer efficiency. The distribution plate consists of a tray plate and a distributor evenly distributed on the plate. The connection methods between the tray plate and the distributor mainly include the following two methods: 1. Welded fixed connection: This connection method is usually used for monolithic trays. The downcomer is directly welded on the tray plate, and the connection is firm and not easy to leak. 2. Removable connector connection: Use standard SLB double-sided removable connectors for connection, which is suitable for the connection between tray plates and tray channel plates, liquid receiving trays and other components.

[0004] After the welding fixation method is used for connection, the formed circular weld needs to be polished. During the current polishing operation, the production workers rely on hand-held angle grinders and other polishing tools to polish. Although the polishing operation of the circular weld can be completed, in the actual operation process, the production workers are required to adjust their positions many times and frequently, which not only has low polishing efficiency, but also leads to rapid consumption of the production workers' physical energy. Utility Model Content

[0005] The purpose of the utility model is to provide a circular weld bead grinding device for reactor internals to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A circular weld bead grinding device for reactor internals comprises a circular cover, a handle is fixedly connected to the center of the upper surface of the circular cover, a grinding unit is arranged below the circular cover, and the grinding unit comprises: a vertical cylinder, rotatably connected to the bottom end of the inner wall of the circular cover; a convex tooth ring, fixedly connected to the top of the vertical cylinder; a tooth column, meshingly connected to the top of the convex tooth ring; a rotating rod, fixedly connected to the inner wall of the tooth column, and rotatably connected to the circular cover through a sealed bearing; a motor, fixedly connected to the outer wall of the circular cover, and the output shaft of the motor is fixedly connected to the rotating rod; a sleeve ring, fixedly sleeved on the bottom end of the outer wall of the vertical cylinder; a plurality of base rods, which are evenly distributed below the sleeve rings; an insertion rod, threadedly connected to the bottom end of the base rod; and a grinding head, fixedly connected to the bottom end of the insertion rod.

[0008] Preferably, the base rod is connected to the collar through an adjusting unit, and the adjusting unit comprises: a plurality of through grooves which are evenly distributed on the upper surface of the collar, and the through grooves allow the base rod to partially penetrate the collar; a plurality of abutments which are fixedly sleeved on the outer walls of the plurality of base rods in sequence from top to bottom, and the abutments are tightly pressed against the contact surface of the collar, wherein the lower abutment is fixedly connected to the outer wall of the base rod; a sealing cap which is fixedly connected to the center of the upper surface of the upper abutment, and the inner wall of the sealing cap is threadedly connected to the top end of the outer wall of the base rod; and a scale which is arranged on the inner side of the upper surface of the collar.

[0009] Preferably, a protective unit is provided under the vertical cylinder, and the protective unit includes: an annular groove, which is opened at the bottom end of the vertical cylinder; a plurality of convex rods, which are vertically evenly distributed inside the annular groove, and the top of the convex rod is fixedly connected to the contact surface of the vertical cylinder; a soft sleeve, which is sleeved on the upper part of the outer wall of the convex rod; a resist ring, which is tightly pressed against the lower surface of the soft sleeve, and the resist ring can be penetrated by the convex rod; a nut, which is threadedly connected to the bottom end of the outer wall of the convex rod, and the nut is tightly pressed against the contact surface of the resist ring.

[0010] Preferably, a limit unit is provided on the upper inner part of the round cover, and the limit unit includes: a pair of right-angle plates, which are located on the upper inner part of the round cover; a pair of vertical rods, whose bottom ends are respectively fixedly connected to the pair of right-angle plates; a threaded barrel, which is fixedly connected to the top of the vertical rod; a screw rod, which is threadedly connected to the inner wall of the threaded barrel, and the screw rod is rotatably connected to the round cover through a sealed bearing; two knobs, which are respectively concentrically fixedly connected to the two ends of the screw rod; a slider, which is fixedly connected to the top of the outer wall of the threaded barrel; a pair of slide grooves, which are opened at the inner top of the round cover, and the slide grooves can limit the sliding of the slider; a plurality of ball bearings, which are respectively and evenly slidably clamped on the inner surfaces of the two right-angle plates.

[0011] Preferably, a base block is rotatably connected to the center of the outer wall of the screw rod, and the top end of the base block is fixedly connected to the contact surface of the round cover.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] Through the cooperation between the round cover and the grinding unit, the production worker first puts the vertical cylinder and the round cover on the outside of the weldment in sequence, so that the grinding head contacts the circular weld to be ground, and starts the motor by holding the handle to rotate the rotating rod and the tooth column. During this period, the tooth column will mesh with the convex tooth ring, so that the convex tooth ring, the vertical cylinder and the sleeve ring can rotate. In this process, multiple grinding heads will rotate around the vertical cylinder as the center. When the grinding head contacts the circular weld, it can be ground. During the grinding operation, the production worker does not need to adjust his position frequently, so as to improve the grinding work efficiency and reduce his own physical effect;

[0014] Through the cooperation between the round cover, the grinding unit and the adjustment unit, when the grinding head is partially worn after being used for a certain period of time, the production worker can rotate the sealing cap to adjust the lateral position of the base rod in the through groove, so that multiple grinding heads move toward the center of the vertical cylinder. In this way, the worn parts of the grinding heads can be compensated, and the circular weld can still be effectively ground, reducing the frequency of replacement of the grinding heads.

[0015] Through the cooperation between the round cover, the grinding unit and the protection unit, during the grinding operation, the soft sleeve can fully fit the outer wall of the weldment, which can effectively prevent impurities generated during the grinding from entering the interior of the vertical cylinder and the round cover, which is beneficial to the stable operation of the structural parts in the vertical cylinder and the round cover, and facilitates the continuous and stable use of the grinding device;

[0016] Through the cooperation between the round cover, the grinding unit and the limit unit, after the vertical cylinder and the round cover are successively mounted on the outside of the weldment, the production worker can apply force to the knob to rotate the screw rod. During the rotation of the screw rod, the threaded cylinder can be synchronously displaced. Through the transmission of the vertical rod, the local ball bearings distributed on the inner surfaces of the two right-angle plates can contact the weldment. This operation can facilitate the round cover and the vertical cylinder to be in a vertical concentric position with the weldment, so that multiple grinding heads can contact the circular weld, which can further facilitate the efficient grinding of the circular weld. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the accompanying drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and the originals and elements are not necessarily drawn to scale.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2for Figure 1 A front partial sectional view of the

[0020] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0021] Figure 4 for Figure 2 The enlarged view of point B in the middle;

[0022] Figure 5 for Figure 2 Enlarged view of point C in the middle;

[0023] Figure 6 for Figure 2 The enlarged view of point D in the middle;

[0024] Figure 7 for Figure 1 A top view of the collar, the abutment and the sealing cap;

[0025] Figure 8 for Figure 1 A top view of the collar;

[0026] Fig. 9 It is the top view of 2 right angle plates;

[0027] Fig.10 for Figure 2 Top view of the overall structure of the convex tooth ring.

[0028] In the figure: 1, round cover, 2, vertical cylinder, 3, convex tooth ring, 4, tooth column, 5, rotating rod, 6, motor, 7, collar, 8, base rod, 9, plug rod, 10, grinding head, 11, through groove, 12, butt plate, 13, sealing cap, 14, scale, 15, ring groove, 16, convex rod, 17, soft sleeve, 18, butt ring, 19, nut, 20, right angle plate, 21, vertical rod, 22, threaded cylinder, 23, screw, 24, knob, 25, slider, 26, slide groove, 27, ball, 28, base block, 29, handle, 30, plate, 31, weldment, 32, circular weld. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-Figure 10The technical solution provided by the utility model is as follows: a circular weld bead grinding device for reactor internals comprises a circular cover 1, a handle 29 is fixedly connected to the center of the upper surface of the circular cover 1, a grinding unit is arranged below the circular cover 1, and the grinding unit comprises: a vertical cylinder 2, rotatably connected to the bottom end of the inner wall of the circular cover 1; a convex tooth ring 3, fixedly connected to the top of the vertical cylinder 2; a tooth column 4, meshingly connected to the top of the convex tooth ring 3; a rotating rod 5, fixedly connected to the inner wall of the tooth column 4, and the rotating rod 5 is rotatably connected to the circular cover 1 through a sealed bearing; a motor 6, fixedly connected to the outer wall of the circular cover 1, and the output shaft of the motor 6 is fixedly connected to the rotating rod 5; a sleeve ring 7, fixedly sleeved to the bottom end of the outer wall of the vertical cylinder 2; a plurality of base rods 8 are arranged, which are evenly distributed below the sleeve ring 7; an insert rod 9, threadedly connected to the bottom end of the base rod 8; and a grinding head 10, fixedly connected to the bottom end of the insert rod 9.

[0031] In the specific implementation process, it is worth pointing out that the handle 29 is provided to facilitate the user to apply force to the round cover 1, the vertical cylinder 2 is rotatably connected to the round cover 1 through a sealed bearing, the convex tooth ring 3 is concentrically arranged with the vertical cylinder 2, and the tooth column 4 is meshed and transmitted when the convex tooth ring 3 is rotated, so that the vertical cylinder 2 can rotate concentrically with the convex tooth ring 3. The casing of the motor 6 is fixedly connected to the round cover 1 through a connecting frame. After the motor 6 is energized, the rotating rod 5 and the tooth column 4 can rotate concentrically. The model of the motor 6 is not limited, and it can meet the requirements of use. The power cord of the motor 6 is connected to an external power supply device, and a control switch is provided on the power cord to control the start and stop operation of the motor 6. The material of the grinding head 10 is not limited, and it can be conventionally used for grinding welds, including but not limited to corundum sand, silicon carbide and alumina sand.

[0032] Furthermore, the base rod 8 is connected to the collar 7 through an adjusting unit, and the adjusting unit includes: a plurality of through grooves 11, which are evenly distributed on the upper surface of the collar 7, and the through grooves 11 allow the base rod 8 to partially penetrate the collar 7; a plurality of abutments 12, which are fixedly sleeved on the outer walls of the plurality of base rods 8 in sequence from top to bottom, and the abutments 12 are tightly pressed against the contact surface of the collar 7, wherein the lower abutment 12 is fixedly connected to the outer wall of the base rod 8; a sealing cap 13, which is fixedly connected to the center of the upper surface of the upper abutment 12, and the inner wall of the sealing cap 13 is threadedly connected to the top end of the outer wall of the base rod 8; a scale 14, which is arranged on the inner side of the upper surface of the collar 7.

[0033] In the specific implementation process, it is worth pointing out that the base rod 8 is slidably assembled in the through groove 11, the base rod 8 can slide inside the through groove 11, and the base rod 8 can slide laterally inside the through groove 11 (when the stopper 12 and the ring 7 are in a non-tight state), and a rubber anti-slip pad is fixed to the surface of the stopper 12 facing the ring 7 to enhance the tight force between the gasket 12 and the ring 7. The setting of the scale 14 is convenient for judging the distance relationship between multiple base rods 8 and the vertical tube 2, which is conducive to equidistant setting.

[0034] Furthermore, a protection unit is provided below the vertical cylinder 2, and the protection unit includes: an annular groove 15, which is opened at the bottom end of the vertical cylinder 2; a plurality of protruding rods 16, which are vertically evenly distributed inside the annular groove 15, and the top of the protruding rod 16 is fixedly connected to the contact surface of the vertical cylinder 2; a soft sleeve 17, which is mounted on the upper part of the outer wall of the protruding rod 16; a retaining ring 18, which is tightly pressed against the lower surface of the soft sleeve 17, and the retaining ring 18 can be penetrated by the protruding rod 16; a nut 19, which is threadedly connected to the bottom end of the outer wall of the protruding rod 16, and the contact surface of the nut 19 and the retaining ring 18 is tightly pressed.

[0035] In the specific implementation process, it is worth pointing out that the bottom end of the outer wall of the protruding rod 16 is processed with an external thread, which can be threadedly connected with the nut 19. The soft sleeve 17 is made of rubber material and has a certain flexibility. The inner diameter of the soft sleeve 17 is smaller than the outer diameter of the welding part 31, which can facilitate the soft sleeve 17 to be fully pressed against the surface of the welding part 31. The nut 19 is a dustproof nut.

[0036] Furthermore, a limit unit is provided at the upper part of the interior of the round cover 1, and the limit unit includes: a right-angle plate 20, which is arranged in a pair and is located at the upper part of the interior of the round cover 1; a pair of vertical rods 21, whose bottom ends are respectively fixedly connected to the pair of said right-angle plates 2; a threaded tube 22, which is fixedly connected to the top of the vertical rod 21; a screw rod 23, which is threadedly connected to the inner wall of the threaded tube 22, and the screw rod 23 is rotatably connected to the round cover 1 through a sealed bearing; two knobs 24 are provided, which are respectively concentrically fixed to the two ends of the screw rod 23; a slider 25 is fixed to the top of the outer wall of the threaded tube 22; a pair of slide grooves 26 are provided, which are opened at the inner top of the round cover 1, and the slide grooves 26 can slide and limit the slider 25; a plurality of balls 27 are provided, which are respectively and evenly slidably clamped on the inner surfaces of the two right-angle plates 20.

[0037] In the specific implementation process, it is worth pointing out that the screw rod 23 is a double-ended screw rod. A double-ended screw rod means that threads are provided at both ends of the screw rod, and the spiral directions of the threads at both ends are opposite. The slider 25 can slide laterally inside the slide groove 26, but cannot move in the front and rear directions. The ball 27 can roll, but cannot be separated from the right-angle plate 20, and will not affect the up and down movement of the round cover 1. The ball 27 is arranged in multiple rows and distributed from top to bottom on the inner surface of the right-angle plate 20.

[0038] Furthermore, a base block 28 is rotatably connected to the center of the outer wall of the screw rod 23 , and the top end of the base block 28 is fixedly connected to the contact surface of the round cover 1 .

[0039] In the specific implementation process, it is worth pointing out that the base block 28 is rotatably connected to the screw rod 23 via a sealed bearing, which can enhance the stability of the screw rod 23 .

[0040] It is worth noting that the plate body 30 is a tray plate in the reactor internals, the welded part 31 is a distributor of the reactor internals, and the circular weld bead 32 is formed by welding the welded part 31 and the plate body 30, and the circular weld bead 32 is a weld to be polished.

[0041] Working principle:

[0042] Device installation limit operation:

[0043] After the vertical cylinder 2 and the round cover 1 are sequentially mounted on the outside of the welding part 31, the production worker can apply force to the knob 24 to rotate the screw rod 23. During the rotation of the screw rod 23, the threaded cylinder 22 can be synchronously displaced. Through the transmission of the vertical rod 21, the local balls 27 distributed on the inner surfaces of the two right-angle plates 20 can be in contact with the welding part 31. This operation can facilitate the round cover 1 and the vertical cylinder 2 to be in a vertical concentric position with the welding part 31, so that multiple grinding heads 10 can all be in contact with the circular weld 32.

[0044] Grinding of circular welds:

[0045] The production worker first puts the vertical cylinder 2 and the round cover 1 on the outside of the welding part 31 in sequence, so that the grinding head 10 contacts the circular weld bead 32 to be ground, and starts the motor 6 by holding the handle 29 to rotate the rotating rod 5 and the tooth column 4. During this period, the tooth column 4 will mesh with the convex tooth ring 3, so that the convex tooth ring 3, the vertical cylinder 2 and the sleeve ring 7 can rotate. In this process, multiple grinding heads 10 will rotate around the vertical cylinder 2 as the center. When the grinding head 10 contacts the circular weld bead 32, it can be ground. During the grinding operation, the production worker does not need to adjust his position frequently, so as to improve the grinding work efficiency and reduce his own physical effect;

[0046] Impurity intrusion prevention operation:

[0047] The soft sleeve 17 can fully fit the outer wall of the welding part 31, which can effectively prevent impurities from entering the interior of the vertical cylinder 2 and the round cover 1 during grinding, which is beneficial to the stable operation of the structural parts in the vertical cylinder 2 and the round cover 1, and facilitates the continuous and stable use of the grinding device;

[0048] Grinding head position adjustment operation:

[0049] When the grinding head 10 is partially worn after being used for a certain period of time, the production worker can rotate the sealing cap 13 to adjust the lateral position of the base rod 8 in the through groove 11, so that multiple grinding heads 10 move toward the center of the vertical cylinder 10. In this way, the worn parts of the grinding head 10 can be compensated, and the circular weld 32 can still be effectively ground, thereby reducing the replacement frequency of the grinding head 10.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circular weld bead grinding device for reactor internals, comprising a circular cover (1), characterized in that: A handle (29) is fixedly connected to the center of the upper surface of the round cover (1), and a grinding unit is provided below the round cover (1), the grinding unit comprising: A vertical cylinder (2) rotatably connected to the bottom end of the inner wall of the circular cover (1); A convex tooth ring (3) fixedly connected to the top end of the vertical cylinder (2); A tooth column (4) meshingly connected to the upper side of the convex tooth ring (3); A rotating rod (5) is fixedly connected to the inner wall of the tooth column (4), and the rotating rod (5) is rotatably connected to the round cover (1) via a sealed bearing; A motor (6) is fixedly connected to the outer wall of the round cover (1), and an output shaft of the motor (6) is fixedly connected to the rotating rod (5); A sleeve ring (7) is fixedly sleeved on the bottom end of the outer wall of the vertical tube (2); A plurality of base rods (8) are provided and are evenly distributed below the sleeve ring (7); An insert rod (9) threadedly connected to the bottom end of the base rod (8); The grinding head (10) is fixedly connected to the bottom end of the insertion rod (9).

2. The circular weld bead grinding device for reactor internals according to claim 1, characterized in that: The base rod (8) is connected to the collar (7) via an adjustment unit, and the adjustment unit comprises: A plurality of through grooves (11) are provided and are evenly distributed on the upper surface of the collar (7), and the through grooves (11) allow the base rod (8) to partially penetrate the collar (7); A plurality of abutment sheets (12) are provided, which are fixedly sleeved on the outer walls of the plurality of base rods (8) in sequence from top to bottom, and the contact surfaces of the abutment sheets (12) and the sleeve ring (7) are tightly pressed against each other, wherein the lower abutment sheet (12) is fixedly connected to the outer wall of the base rod (8); A sealing cap (13) is fixedly connected to the center of the upper surface of the upper abutment sheet (12), and the inner wall of the sealing cap (13) is threadedly connected to the top end of the outer wall of the base rod (8); A scale (14) is arranged on the inner side of the upper surface of the collar (7).

3. The circular weld bead grinding device for reactor internals according to claim 1, characterized in that: A protection unit is provided below the vertical cylinder (2), and the protection unit comprises: An annular groove (15) is provided at the bottom end of the vertical cylinder (2); A plurality of protruding rods (16) are provided and evenly distributed vertically inside the annular groove (15), and the top ends of the protruding rods (16) are fixedly connected to the contact surface of the vertical cylinder (2); A soft sleeve (17) is sleeved on the outer wall of the protruding rod (16); A butt ring (18) is pressed against the lower surface of the soft sleeve (17), and the butt ring (18) can be penetrated by the protruding rod (16); The nut (19) is threadedly connected to the bottom end of the outer wall of the protruding rod (16), and the contact surface of the nut (19) and the abutment ring (18) are tightly pressed against each other.

4. The circular weld bead grinding device for reactor internals according to claim 1, characterized in that: A limiting unit is provided on the upper part of the inner part of the circular cover (1), and the limiting unit comprises: A pair of right-angle plates (20) are provided and are located above the inner part of the circular cover (1); A pair of vertical poles (21) are provided, and the bottom ends thereof are respectively fixedly connected to a pair of the right-angle plates (20); A threaded tube (22) fixedly connected to the top end of the vertical rod (21); A screw rod (23) is threadedly connected to the inner wall of the threaded barrel (22), and the screw rod (23) is rotatably connected to the round cover (1) via a sealed bearing; Two knobs (24) are provided and are respectively and concentrically fixedly connected to the two ends of the screw rod (23); A slider (25) fixedly connected to the top end of the outer wall of the threaded cylinder (22); A pair of slide grooves (26) are provided, which are opened at the inner top of the round cover (1), and the slide grooves (26) can slide and limit the slider (25); A plurality of balls (27) are provided, and are respectively and evenly slidably engaged with the inner surfaces of the two right-angle plates (20).

5. The circular weld bead grinding device for reactor internals according to claim 4, characterized in that: The center of the outer wall of the screw rod (23) is rotatably connected to a base block (28), and the top end of the base block (28) is fixedly connected to the contact surface of the round cover (1).

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