Thick-wall cylinder circular seam dehydrogenation device

Abstract

The invention relates to the field of circular seam hydrogen elimination equipment, in particular to a thick-wall barrel circular seam hydrogen elimination device which comprises a base, two supporting rollers are symmetrically and rotationally connected to the top end of the base, and the two supporting rollers are used for supporting and driving a barrel to rotate; the support assembly is slidably connected to the top end of the base, a mounting rod is fixedly connected to the side wall of the top end of the support assembly, and a plurality of first air cylinders are fixedly connected to the end, close to the barrel, of the mounting rod in an array mode; by arranging the mounting rod, the arc-shaped mounting frame and the heating fire head assembly, the mounting rod drives the heating fire head assembly to move to the circular seam of the barrel or leave the circular seam of the barrel, on one hand, manual mounting and dismounting are not needed, the labor intensity is reduced, and on the other hand, the heating fire head assembly and the barrel rotate relatively; and each part of the circular seam can be heated by flames, so that heating dead angles can be reduced, and hydrogen in the circular seam can be fully eliminated.

Description

Technical Field

[0001] The invention relates to the field of annular seam dehydrogenation equipment, in particular to an annular seam dehydrogenation device for a thick-walled cylinder. Background Art

[0002] During the welding process of the circumferential seam of the pressure vessel shell, the hydrogen in the welding rod, flux and air decomposes into atomic state at high temperature and dissolves into the liquid metal. When the weld cools, the solubility of hydrogen in steel drops sharply, but due to the rapid cooling rate of the weld, hydrogen cannot escape in time and remains in the weld metal. Over time, this hydrogen will accumulate in the weld or heat-affected zone. When it reaches a certain concentration and under the action of welding stress, it may cause delayed cracks in the weld or heat-affected zone. Therefore, the main purpose of post-weld dehydrogenation treatment is to promote the rapid escape of diffused hydrogen in the weld metal, reduce the hydrogen content in the weld and heat-affected zone, and prevent the occurrence of cracks.

[0003] For example, the invention patent with publication number CN102226229A discloses a steam drum annular seam preheating and dehydrogenation device, which consists of a left part and a right part, wherein the left part and the right part respectively include a supporting mechanism and a heat-insulating mechanism arranged on the supporting mechanism, wherein the heat-insulating mechanism is in a semicircular ring shape, and the heat-insulating mechanisms of the left and right parts are detachably spliced ​​together to form a ring shape and a certain gap is left at the joint, and the cross-section of the heat-insulating mechanism is in a concave shape, and its open end forms an inner channel of high-temperature airflow toward the inside, and the bottom of the lower part of the heat-insulating mechanism is an opening section with an opening, and at least one group of fire heads are arranged on the supporting mechanism, and the fire heads are correspondingly arranged below the opening section of the heat-insulating mechanism.

[0004] The above case has the following defects: in the process of heating and dehydrogenating the annular seam of the pressure vessel cylinder, it is necessary to manually install multiple burners on the annular seam of the pressure vessel cylinder. After the heating and dehydrogenating is completed, the multiple burners are removed, which not only increases the labor intensity, but also the position of the burners is fixed, which easily leads to heating dead corners, and then causes uneven heating of the annular seam of the cylinder and incomplete dehydrogenating of the annular seam of the cylinder.

[0005] To this end, the present invention proposes a thick-walled cylinder annular seam hydrogen removal device to solve the above-mentioned problem. Summary of the invention

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is: a thick-walled cylinder annular seam hydrogen removal device, comprising:

[0007] A base, wherein the top of the base is symmetrically rotatably connected to two support rollers, and the two support rollers are used to support and drive the cylinder to rotate;

[0008] Bracket assembly, the bracket assembly is slidably connected to the top end of the base, a mounting rod is fixedly connected to the side wall of the top end of the bracket assembly, several first cylinders are fixedly connected in an array at the end of the mounting rod close to the cylinder body, the ends of the telescopic rods of the several first cylinders are fixedly connected with arc-shaped mounting frames, several sliding seats are fixedly connected in an array on the side walls of the several arc-shaped mounting frames, two sliding blocks are symmetrically and slidably connected in each of the several sliding seats, a heating burner assembly is arranged at the bottom end of the sliding block, and the heating burner assembly is used for spraying flames to heat the circumferential seam of the cylinder body;

[0009] Spacing adjustment assembly, the spacing adjustment assembly is used for adjusting the spacing between the two sliding blocks in the sliding seat, so that the two heating burner assemblies are adaptively adjusted according to the width of the circumferential seam of the cylinder body, so that the flames sprayed by the heating burner assemblies can fully cover the circumferential seam of the cylinder body;

[0010] Specifically, in the prior art, during the process of heating and removing hydrogen from the circumferential seam of a pressure vessel cylinder body, it is necessary to manually install multiple burners at the position of the circumferential seam of the pressure vessel cylinder body. After the heating and hydrogen removal are completed, the multiple burners need to be removed. This not only increases the labor intensity, but also the positions of the burners are fixed, which easily results in heating dead angles, and then leads to uneven heating of the circumferential seam of the cylinder body and incomplete hydrogen removal from the circumferential seam of the cylinder body. The technical solution of the present invention can solve the above problems, and the specific operation is as follows:

[0011] The mounting rod is conveyed into the cylinder body through the bracket assembly. The conveying method can be to push the bracket assembly through a hydraulic cylinder. After the mounting rod enters the cylinder body, by starting the first cylinder, the telescopic rod of the first cylinder pushes the arc-shaped mounting frame, so that the arc-shaped mounting frame moves towards the inner wall of the cylinder body, and the heating burner assembly approaches the circumferential seam of the cylinder body; then, according to the width of the circumferential seam, the distance between the heating burner assemblies is adjusted through the spacing adjustment assembly. If the width of the circumferential seam is large, the two heating burner assemblies move away from each other, so as to ensure that the flames can fully cover the circumferential seam of the cylinder body, reduce the heating dead angle, and facilitate the full elimination of hydrogen in the circumferential seam; if the width of the circumferential seam is small, the two heating burner assemblies move closer to each other, reducing the coverage area of the flames and reducing the area of the cylinder body other than the circumferential seam heated by the flames, thereby reducing the damage to the inner wall of the cylinder body; after the adjustment is completed, by starting the support roller to rotate, the specific starting method of the support roller can be selected as motor drive. When the support roller rotates, the cylinder body rotates, so that the circumferential seam contacts the flames sprayed by the heating burner assemblies on the path, so that every part of the circumferential seam can be heated by the flames, which is beneficial to reducing the heating dead angle and is beneficial to the full elimination of hydrogen in the circumferential seam; after the hydrogen removal is completed, by starting the first cylinder, the telescopic rod of the first cylinder pulls the arc-shaped mounting frame to reset and move away from the inner wall of the cylinder body, which is beneficial to the arc-shaped mounting frame leaving the cylinder body and reducing the possibility of the arc-shaped mounting frame colliding with the inner wall of the cylinder body.

[0012] Preferably, the heating burner assembly includes:

[0013] A burner head, the burner head is fixedly connected to the bottom end of the sliding block, and the top end of the burner head penetrates through the sliding block;

[0014] An iris mechanism, the iris mechanism is arranged at the port of the burner head and is used to adjust the caliber of the port of the burner head to adjust the flame range, so that the flame can fully cover the circumferential seam of the cylinder.

[0015] Preferably, the spacing adjustment assembly includes:

[0016] Several arc-shaped drive plates, several arc-shaped drive plates are respectively slidably connected to the side wall of the arc-shaped mounting frame. A first inclined groove is provided at the top end of the arc-shaped drive plate corresponding to the position of the burner head, and the top end of the burner head is slidably connected in the first inclined groove;

[0017] A ring-shaped mounting frame, the ring-shaped mounting frame is rotatably connected to the end of the mounting rod;

[0018] Several telescopic movable rods, several telescopic movable rods are fixedly connected to the side wall of the ring-shaped mounting frame in an array, and the telescopic ends of several telescopic movable rods are respectively fixedly connected to the arc-shaped drive plate;

[0019] A drive motor, the drive motor is fixedly connected to the end of the mounting rod, and the output shaft of the drive motor is fixedly connected to the ring-shaped mounting frame.

[0020] Preferably, the iris mechanism includes:

[0021] An equilateral hexagon groove, the equilateral hexagon groove is opened on the wall of the port of the burner head, and the equilateral hexagon groove has six guiding grooves;

[0022] Several adjusting vane plates, several adjusting vane plates are slidably connected to the wall of the port of the burner head in an array. A sliding pin is fixedly connected to the bottom end of the adjusting vane plate, and the sliding pin is slidably connected in one of the guiding grooves;

[0023] A drive housing, the drive housing is rotatably connected to the outer wall of the burner head. Six straight grooves are arranged in an array at the bottom end of the drive housing, and six sliding pins are respectively slidably connected in the six straight grooves;

[0024] A gear, the gear is fixedly connected to the outer wall of the drive housing, and a rack is engaged with the side wall of the gear, and the rack is fixedly connected to the wall of the sliding seat.

[0025] Preferably, it further includes:

[0026] An intake pipe, the intake pipe is fixedly connected to the top end of the burner head, and the intake pipe is communicated with the burner head;

[0027] A constant pressure pipe, which is fixedly connected to the top end of the intake pipe;

[0028] An annular airbag, which is fixedly connected to the inner wall of the intake pipe;

[0029] An expansion adjustment assembly, which adjusts the radius of the annular airbag according to the thickness of the annular gap to control the intake air flow of the intake pipe.

[0030] Preferably, the expansion adjustment assembly includes:

[0031] A compression pipe, which is fixedly connected to the outer side wall of the intake pipe, and the end of the compression pipe is fixedly communicated with the annular airbag;

[0032] A piston rod, which is slidably connected in the compression pipe. A driving block is fixedly connected to the end of the piston rod. Second inclined grooves are symmetrically arranged on both sides of the driving block. A connecting rod is fixedly connected to the outer side wall of the intake pipe, and the connecting rod is slidably connected in the driving block;

[0033] A driving frame, which is slidably connected to the side wall of the sliding block. A spring is fixedly connected between the driving frame and the sliding block. A roller is rotatably connected to the bottom end of the driving frame. The roller contacts the annular gap of the cylinder body. The top ends of both sides of the driving frame are slidably connected in the second inclined grooves.

[0034] Preferably, a pressure sensor is arranged on the side wall of the driving frame, and the pressure sensor is used to check the elastic pressure of the spring.

[0035] Preferably, the bracket assembly includes:

[0036] A bottom plate, which is slidably connected to the top end of the base;

[0037] A support frame, which is slidably connected to the top end of the bottom plate. Two second cylinders are symmetrically and fixedly connected to the top end of the bottom plate. The telescopic rod of the second cylinder is fixedly connected to the side wall of the support frame; a third cylinder is fixedly connected to the top end of the support frame, and the top end of the telescopic rod of the third cylinder is fixedly connected to a mounting seat, and the mounting rod is fixedly connected to the side wall of the mounting seat.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] First, by setting the mounting rod, the arc-shaped mounting frame and the heating burner assembly, the burner assembly is driven by the mounting rod to move to the annular gap of the cylinder body or leave from the annular gap of the cylinder body. On the one hand, it is not necessary to install and disassemble manually, reducing the labor intensity. On the other hand, the burner assembly rotates relative to the cylinder body, so that every part of the annular gap can be heated by the flame, which is beneficial to reducing the heating dead angle and is beneficial to fully eliminating the hydrogen in the annular gap.

[0040] Second, the present invention is provided with a flame jet head and a spacing adjustment component. By manually measuring the width of the circumferential seam, when the width of the circumferential seam is large, the two flame jet heads are moved away from each other, so as to ensure that the flame can fully cover the circumferential seam of the cylinder body, reduce the heating dead angle, and facilitate the full elimination of hydrogen in the circumferential seam. If the width of the circumferential seam is small, the two flame jet heads are moved closer to each other, reducing the coverage area of the flame and the area of the rest of the cylinder body heated by the flame, thereby reducing the damage to the inner wall of the cylinder body.

[0041] Third, the present invention is provided with a driving shell and adjusting vane plates. During the process of the two flame jet heads moving away from each other, the driving gear and the rack are engaged, causing the driving shell to rotate, the sliding pin to move along the support inward, and then under the guidance of the guiding groove, several adjusting vane plates move away from the center of the flame jet head, thereby increasing the caliber of the flame jet head and increasing the area that the flame can cover, which is beneficial for the flame to fully cover the circumferential seam of the cylinder body. On the contrary, several adjusting vanes approach the center of the flame jet head, reducing the caliber of the flame jet head, thereby reducing the area that the flame can cover and the area of the rest of the cylinder body heated by the flame, and then reducing the damage to the inner wall of the cylinder body.

[0042] Fourth, for the annular airbag, the driving frame and the compression tube, when the thickness of the circumferential seam is large, the driving frame is squeezed by the circumferential seam, causing the driving frame to move upward, and the top of the driving frame to move along the second inclined groove. Under the drive of the second inclined groove, the driving block drives the piston rod to extend out of the compression tube, thereby causing the annular airbag to contract, increasing the caliber of the air inlet pipe, increasing the flow rate of natural gas introduced into the air inlet pipe, and making the flame ejected by the flame jet head at the corresponding position more vigorous, which is beneficial for fully heating the thick position and enabling the hydrogen at the thick position to be fully eliminated. On the contrary, the flow rate decreases, avoiding excessive flame vigor and damage to the cylinder body. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is the overall structure diagram of the present invention;

[0044] Figure 2 is the connection schematic diagram of the mounting rod and the arc-shaped mounting bracket in the present invention Figure 1 ;

[0045] Figure 3 is Figure 2 the enlarged view at A in

[0046] Figure 4 is the connection schematic diagram of the mounting rod and the arc-shaped mounting bracket in the present invention Figure 2 ;

[0047] Figure 5 is Figure 4 the enlarged view at B in

[0048] Figure 6Schematic diagram of the connection between the drive motor and the annular mounting bracket of the present invention;

[0049] Figure 7 Schematic diagram of the connection between the arc-shaped mounting bracket and the arc-shaped drive plate in the present invention;

[0050] Figure 8 Schematic diagram of the connection between the sliding block and the drive bracket in the present invention;

[0051] Figure 9 Schematic diagram of the connection between the sliding seat and the sliding block in the present invention;

[0052] Figure 10 Cross-sectional view of the intake pipe in the present invention;

[0053] Figure 11 Schematic diagram of the connection between the drive bracket and the drive block in the present invention;

[0054] Figure 12 Schematic diagram of the connection between the flame nozzle and the adjusting vane in the present invention;

[0055] Figure 13 Schematic diagram of the connection between the drive housing and the gear in the present invention;

[0056] Figure 14 Three-dimensional view of the flame nozzle in the present invention.

[0057] In the figure: base 1, support roller 2, bottom plate 3, support frame 4, second cylinder 5, third cylinder 6, mounting seat 7, mounting rod 8, first cylinder 9, arc-shaped mounting bracket 10, sliding seat 11, sliding block 12, flame nozzle 13, arc-shaped drive plate 14, first inclined groove 15, annular mounting bracket 16, telescopic movable rod 17, drive motor 18, equilateral hexagon groove 19, adjusting vane 20, drive housing 21, straight groove 22, gear 23, rack 24, intake pipe 25, constant pressure pipe 26, annular airbag 27, compression pipe 28, piston rod 29, drive block 30, second inclined groove 31, connecting rod 32, drive bracket 33, spring 34, roller 35, pressure sensor 36, cylinder body 37. Detailed implementation manners

[0058] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations.

[0059] As Figures 1 to 14 shown, a hydrogen elimination device for the circumferential seam of a thick-walled cylinder body includes:

[0060] Base 1, two support rollers 2 are symmetrically and rotatably connected to the top of the base 1, and the two support rollers 2 are used to support and drive the cylinder body 37 to rotate;

[0061] The support assembly is slidably connected to the top end of the base 1. A mounting rod 8 is fixedly connected to the side wall of the top end of the support assembly. Several first cylinders 9 are fixedly connected in an array at the end of the mounting rod 8 close to the cylinder body 37. The ends of the expansion rods of the several first cylinders 9 are all fixedly connected with arc-shaped mounting frames 10. Several sliding seats 11 are fixedly connected in an array on the side walls of the several arc-shaped mounting frames 10. Two sliding blocks 12 are symmetrically and slidably connected in each of the several sliding seats 11. A heating burner assembly is arranged at the bottom end of the sliding block 12. The heating burner assembly is used for spraying flames to heat the circumferential seam of the cylinder body 37.

[0062] The spacing adjustment assembly is used to adjust the spacing between the two sliding blocks 12 in the sliding seat 11, so that the two heating burner assemblies are adaptively adjusted according to the width of the circumferential seam of the cylinder body 37, so that the flames sprayed by the heating burner assemblies can fully cover the circumferential seam of the cylinder body 37.

[0063] Specifically, in the prior art, during the process of heating and removing hydrogen from the circumferential seam of a pressure vessel cylinder body, it is necessary to manually install multiple burners at the position of the circumferential seam of the pressure vessel cylinder body. After the heating and hydrogen removal are completed, the multiple burners need to be removed. This not only increases the labor intensity, but also the positions of the burners are fixed, which easily results in heating dead angles, and then leads to uneven heating of the circumferential seam of the cylinder body and incomplete hydrogen removal from the circumferential seam of the cylinder body. The present technical solution can solve the above problems, and the specific operation is as follows:

[0064] The mounting rod 8 is conveyed into the cylinder body 37 through the support assembly. The conveying method can be to push the support assembly through a hydraulic cylinder. After the mounting rod 8 enters the cylinder body 37, by starting the first cylinder 9, the expansion rod of the first cylinder 9 pushes the arc-shaped mounting frame 10, so that the arc-shaped mounting frame 10 moves towards the inner wall of the cylinder body 37, and the heating burner assembly approaches the circumferential seam of the cylinder body 37.

[0065] Then, according to the width of the circumferential seam, the distance between the heating burner assemblies is adjusted through the spacing adjustment assembly. If the width of the circumferential seam is large, the two heating burner assemblies move away from each other, so as to ensure that the flames can fully cover the circumferential seam of the cylinder body 37, reduce the heating dead angle, and facilitate the full elimination of hydrogen in the circumferential seam. If the width of the circumferential seam is small, the two heating burner assemblies move closer to each other, reducing the coverage area of the flames and reducing the area of the other parts of the cylinder body 37 heated by the flames, thereby reducing the damage to the inner wall of the cylinder body 37.

[0066] After the adjustment is completed, by starting the support roller 2 to rotate, the specific starting method of the support roller 2 can be selected as motor drive. When the support roller 2 rotates, the cylinder body 37 rotates, so that the circumferential seam contacts the flames sprayed by the heating burner assemblies on the path, so that every part of the circumferential seam can be heated by the flames, which is beneficial to reducing the heating dead angle and beneficial to the full elimination of hydrogen in the circumferential seam.

[0067] After the hydrogen elimination is completed, by starting the first cylinder 9, the telescopic rod of the first cylinder 9 pulls the arc-shaped mounting bracket 10 to reset and move away from the inner wall of the cylinder body 37, which is beneficial to making the arc-shaped mounting bracket 10 leave the cylinder body 37 and reducing the possibility of the arc-shaped mounting bracket 10 hitting the inner wall of the cylinder body 37.

[0068] Furthermore, the heating burner assembly includes:

[0069] A burner head 13, which is fixedly connected to the bottom end of the sliding block 12, and the top end of the burner head 13 penetrates through the sliding block 12;

[0070] As a further embodiment of the present invention, the spacing adjustment assembly includes:

[0071] Several arc-shaped driving plates 14, which are respectively slidably connected to the side wall of the arc-shaped mounting bracket 10. A first inclined groove 15 is provided at the position corresponding to the burner head 13 at the top end of the arc-shaped driving plate 14, and the top end of the burner head 13 is slidably connected in the first inclined groove 15;

[0072] A ring-shaped mounting bracket 16, which is rotatably connected to the end of the mounting rod 8;

[0073] Several telescopic movable rods 17, which are fixedly connected to the side wall of the ring-shaped mounting bracket 16 in an array, and the telescopic ends of the several telescopic movable rods 17 are respectively fixedly connected to the arc-shaped driving plates 14;

[0074] A driving motor 18, which is fixedly connected to the end of the mounting rod 8, and the output shaft of the driving motor 18 is fixedly connected to the ring-shaped mounting bracket 16;

[0075] Specifically, by setting the ring-shaped mounting bracket 16 and the arc-shaped driving plates 14, when the width of the circumferential seam is measured manually to be relatively large, start the driving motor 18, so that the output shaft of the driving motor 18 rotates, causing the ring-shaped mounting bracket 16 to rotate. Through the connection of the telescopic movable rods 17, the arc-shaped driving plates 14 rotate. Subsequently, under the drive of the first inclined groove 15, the two burner heads 13 move away from each other, thereby ensuring that the flame can fully cover the circumferential seam of the cylinder body 37, reducing the heating dead angle, and facilitating the full elimination of hydrogen in the circumferential seam;

[0076] If the width of the circumferential seam is relatively small, the output shaft of the driving motor 18 rotates in the reverse direction, causing the two burner heads 13 to approach each other, reducing the coverage area of the flame, and reducing the area of the rest of the cylinder body 37 heated by the flame, thereby reducing the damage to the inner wall of the cylinder body 37.

[0077] As a further embodiment of the present invention, the heating burner assembly further includes:

[0078] The iris mechanism is arranged at the port of the flame nozzle 13 and is used to adjust the caliber of the port of the flame nozzle 13 so as to adjust the flame range, enabling the flame to fully cover the circumferential seam of the cylinder body 37;

[0079] The iris mechanism includes:

[0080] The regular hexagon groove 19 is opened on the wall of the port of the flame nozzle 13. The regular hexagon groove 19 has six guiding grooves;

[0081] Several adjusting vane plates 20 are arranged in an array and slidably connected to the wall of the port of the flame nozzle 13. A sliding pin is fixedly connected to the bottom end of the adjusting vane plate 20, and the sliding pin is slidably connected in one of the guiding grooves;

[0082] The driving shell 21 is rotatably connected to the outer side wall of the flame nozzle 13. Six straight grooves 22 are arranged in an array at the bottom end of the driving shell 21, and the six sliding pins are respectively slidably connected in the six straight grooves 22;

[0083] The gear 23 is fixedly connected to the outer side wall of the driving shell 21. A rack 24 is engaged with the side wall of the gear 23, and the rack 24 is fixedly connected to the wall of the sliding seat 11;

[0084] Specifically, by setting the driving shell 21 and the adjusting vane plate 20, during the process of the two flame nozzles 13 moving away from each other, the driving gear 23 and the rack 24 are engaged, causing the driving shell 21 to rotate, the sliding pin to move along the support inward, and then under the guidance of the guiding groove, several adjusting vane plates 20 move away from the center position of the flame nozzle 13, thereby increasing the caliber of the flame nozzle 13 and increasing the area that the flame can cover, which is beneficial for the flame to fully cover the circumferential seam of the cylinder body 37;

[0085] On the contrary, several adjusting vanes approach the center of the flame nozzle 13, reducing the caliber of the flame nozzle 13, thereby reducing the area that the flame can cover and reducing the area of the other parts of the cylinder body 37 heated by the flame, and then reducing the damage to the inner wall of the cylinder body 37.

[0086] As a further implementation scheme of the present invention, it further includes:

[0087] The air inlet pipe 25 is fixedly connected to the top end of the flame nozzle 13, and the air inlet pipe 25 is communicated with the flame nozzle 13;

[0088] The constant pressure pipe 26 is fixedly connected to the top end of the air inlet pipe 25, and the other end of the constant pressure pipe 26 is connected to an external air supply device;

[0089] The annular airbag 27 is fixedly connected to the inner wall of the air inlet pipe 25;

[0090] The expansion adjustment assembly adjusts the radius of the annular airbag 27 according to the thickness of the circumferential seam to control the intake air flow of the intake pipe 25;

[0091] The expansion adjustment assembly includes:

[0092] A compression pipe 28 is fixedly connected to the outer side wall of the intake pipe 25, and the end of the compression pipe 28 is fixedly communicated with the annular airbag 27;

[0093] A piston rod 29 is slidably connected in the compression pipe 28. A driving block 30 is fixedly connected to the end of the piston rod 29. Second inclined grooves 31 are symmetrically formed on both sides of the driving block 30. A connecting rod 32 is fixedly connected to the outer side wall of the intake pipe 25, and the connecting rod 32 is slidably connected in the driving block 30;

[0094] A driving frame 33 is slidably connected to the side wall of the sliding block 12. A spring 34 is fixedly connected between the driving frame 33 and the sliding block 12. A roller 35 is rotatably connected to the bottom end of the driving frame 33. The roller 35 contacts the circumferential seam of the cylinder body 37. The top ends of both sides of the driving frame 33 are slidably connected in the second inclined grooves 31;

[0095] Specifically, by arranging the annular airbag 27, the driving frame 33 and the compression pipe 28, during the process of the driving frame 33 moving along the inside of the cylinder body 37, if the thickness of the circumferential seam is different, the driving frame 33 will move up and down along the sliding block 12. When the thickness of the circumferential seam is large, the driving frame 33 is squeezed by the circumferential seam, causing the driving frame 33 to move upward, so that the top end of the driving frame 33 moves along the second inclined groove 31. Driven by the second inclined groove 31, the driving block 30 drives the piston rod 29 to extend out of the compression pipe 28, so that the annular airbag 27 contracts, increasing the diameter of the intake pipe 25, increasing the flow rate of natural gas introduced into the intake pipe 25, so that the flame ejected by the burner head 13 at the corresponding position is more vigorous, which is beneficial to fully heat the thick position, so that the hydrogen at the thick position can be fully eliminated. On the contrary, the flow rate decreases to avoid excessive flame vigor and damage to the cylinder body 37.

[0096] It should be noted that: the constant pressure pipe 26 is used to control and adjust the gas pressure in the pipeline to make it at a constant pressure.

[0097] As a further implementation scheme of the present invention, a pressure sensor 36 is arranged on the side wall of the driving frame 33, and the pressure sensor 36 is used to check the elastic pressure of the spring 34;

[0098] The bracket assembly includes:

[0099] A bottom plate 3 is slidably connected to the top end of the base 1;

[0100] Support frame 4, the support frame 4 is slidably connected to the top end of the bottom plate 3, and two second cylinders 5 are symmetrically and fixedly connected to the top end of the bottom plate 3. The telescopic rod of the second cylinder 5 is fixedly connected to the side wall of the support frame 4; a third cylinder 6 is fixedly connected to the top end of the support frame 4, and the top end of the telescopic rod of the third cylinder 6 is fixedly connected to a mounting seat 7, and a mounting rod 8 is fixedly connected to the side wall of the mounting seat 7;

[0101] Specifically, by setting the pressure sensor 36, the second cylinder 5 and the third cylinder 6, during the process of the arc-shaped mounting frame 10 approaching the inner wall of the cylinder body 37, the driving frame 33 contacts the inner wall of the cylinder body 37. Under the extrusion of the inner wall of the cylinder body 37, the driving frame 33 moves along the sliding block 12, the spring 34 is compressed, and the pressure value of the pressure sensor 36 increases. If the pressure values of several pressure sensors 36 are different, by starting the second cylinder 5 and the third cylinder 6, the position of the mounting rod 8 is adjusted so that the mounting rod 8 is concentric with the cylinder body 37 until the pressure values of several pressure sensors 36 are the same, thereby ensuring that the flame nozzles 13 at each place are at the same distance from the inner wall of the cylinder body 37, which is beneficial to uniformly heating the circumferential seam of the cylinder body 37.

[0102] The working principle of the present invention:

[0103] The mounting rod 8 is transported into the cylinder body 37 through the bracket assembly. The transportation method can be to push the bracket assembly through the hydraulic cylinder. After the mounting rod 8 enters the cylinder body 37, by starting the first cylinder 9, the telescopic rod of the first cylinder 9 pushes the arc-shaped mounting frame 10, so that the arc-shaped mounting frame 10 moves towards the inner wall of the cylinder body 37, and the heating burner assembly approaches the circumferential seam of the cylinder body 37;

[0104] Then, according to the width of the circumferential seam, the distance between the heating burner assemblies is adjusted through the spacing adjustment assembly. If the width of the circumferential seam is large, the two heating burner assemblies move away from each other, so as to ensure that the flame can fully cover the circumferential seam of the cylinder body 37, reduce the heating dead angle, and facilitate the full elimination of hydrogen in the circumferential seam; if the width of the circumferential seam is small, the two heating burner assemblies move closer to each other, reduce the coverage area of the flame, and reduce the area of the inner wall of the cylinder body 37 heated by the flame, thereby reducing the damage to the inner wall of the cylinder body 37;

[0105] After the adjustment is completed, by starting the support roller 2 to rotate, the specific starting method of the support roller 2 can be selected as motor drive. When the support roller 2 rotates, the cylinder body 37 rotates, so that the circumferential seam contacts the flame sprayed by the heating burner assembly on the path, so that each part of the circumferential seam can be heated by the flame, which is beneficial to reducing the heating dead angle and is beneficial to the full elimination of hydrogen in the circumferential seam;

[0106] After the hydrogen elimination is completed, by starting the first cylinder 9, the telescopic rod of the first cylinder 9 pulls the arc-shaped mounting bracket 10 to reset and move away from the inner wall of the cylinder body 37, which is beneficial to making the arc-shaped mounting bracket 10 leave the cylinder body 37 and reducing the possibility of the arc-shaped mounting bracket 10 hitting the inner wall of the cylinder body 37.

[0107] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A thick-walled cylinder annular seam hydrogen removal device, characterized in that: include: A base (1), wherein the top of the base (1) is symmetrically rotatably connected to two support rollers (2), and the two support rollers (2) are used to support and drive the cylinder (37) to rotate; A support assembly, wherein the support assembly is slidably connected to the top of the base (1), the side wall of the top of the support assembly is fixedly connected to a mounting rod (8), the end of the mounting rod (8) close to the cylinder (37) is fixedly connected to a plurality of first cylinders (9) in an array, the ends of the telescopic rods of the plurality of first cylinders (9) are fixedly connected to an arc-shaped mounting frame (10), the side walls of the plurality of arc-shaped mounting frames (10) are fixedly connected to a plurality of sliding seats (11), the plurality of sliding seats (11) are symmetrically slidably connected to two sliding blocks (12), the bottom end of the sliding block (12) is provided with a heating head assembly, the heating head assembly is used to spray flames to heat the annular seam of the cylinder (37); A spacing adjustment component is used to adjust the spacing between the two sliding blocks (12) in the sliding seat (11), so that the two heating head assemblies are adaptively adjusted according to the width of the annular seam of the cylinder (37), so that the flames ejected by the heating head assemblies can fully cover the annular seam of the cylinder (37).

2. A thick-walled cylinder annular seam hydrogen removal device according to claim 1, characterized in that: The heating head assembly comprises: A flame spray head (13), wherein the flame spray head (13) is fixedly connected to the bottom end of the sliding block (12), and the top end of the flame spray head (13) passes through the sliding block (12); An iris mechanism is arranged at the port of the flame spray head (13) and is used to adjust the caliber of the port of the flame spray head (13) to adjust the flame range so that the flame can fully cover the annular seam of the cylinder (37).

3. A thick-walled cylinder annular seam hydrogen removal device according to claim 2, characterized in that: The spacing adjustment component comprises: A plurality of arc-shaped driving plates (14), wherein the plurality of arc-shaped driving plates (14) are respectively slidably connected to the side walls of the arc-shaped mounting frame (10), a first inclined groove (15) is provided at the top end of the arc-shaped driving plate (14) corresponding to the position of the flame spray head (13), and the top end of the flame spray head (13) is slidably connected in the first inclined groove (15); an annular mounting frame (16), the annular mounting frame (16) being rotatably connected to the end of the mounting rod (8); A plurality of telescopic movable rods (17), wherein the plurality of telescopic movable rods (17) are fixedly connected in array to the side wall of the annular mounting frame (16), and the telescopic ends of the plurality of telescopic movable rods (17) are respectively fixedly connected to the arc-shaped driving plate (14); A driving motor (18) is fixedly connected to the end of the mounting rod (8), and an output shaft of the driving motor (18) is fixedly connected to the annular mounting frame (16).

4. A thick-walled cylinder annular seam hydrogen removal device according to claim 2, characterized in that: The iris mechanism comprises: An equal hexagonal groove (19), the equal hexagonal groove (19) is arranged on the port wall of the flame spray head (13), and the equal hexagonal groove (19) has six guide grooves; A plurality of adjusting blades (20), wherein an array of the adjusting blades (20) is slidably connected to the port wall of the flame spray head (13), a sliding pin is fixedly connected to the bottom end of the adjusting blade (20), and the sliding pin is slidably connected in a guide groove therein; A driving shell (21), the driving shell (21) is rotatably connected to the outer wall of the flame spray head (13), the bottom end of the driving shell (21) is provided with six straight grooves (22) in an array, and the six sliding pins are respectively slidably connected in the six straight grooves (22); A gear (23) is fixedly connected to the outer wall of the driving housing (21), the side wall of the gear (23) is meshed with a rack (24), and the rack (24) is fixedly connected to the wall of the sliding seat (11).

5. A thick-walled cylinder annular seam hydrogen removal device according to claim 1, characterized in that: Also includes: An air intake pipe (25), the air intake pipe (25) is fixedly connected to the top end of the flame spray head (13), and the air intake pipe (25) is in communication with the flame spray head (13); A constant pressure tube (26), wherein the constant pressure tube (26) is fixedly connected to the top end of the air inlet pipe (25); an annular airbag (27), wherein the annular airbag (27) is fixedly connected to the inner wall of the air inlet pipe (25); An expansion adjustment component is provided, wherein the expansion adjustment component adjusts the radius of the annular airbag (27) according to the thickness of the annular gap to control the air intake flow of the air intake pipe (25).

6. A thick-walled cylinder annular seam hydrogen removal device according to claim 5, characterized in that: The expansion adjustment assembly comprises: A compression tube (28), the compression tube (28) is fixedly connected to the outer wall of the air inlet pipe (25), and the end of the compression tube (28) is fixedly connected to the annular air bag (27); A piston rod (29), wherein the piston rod (29) is slidably connected in the compression tube (28), the end of the piston rod (29) is fixedly connected to a driving block (30), and the driving block (30) is symmetrically provided with second inclined grooves (31) on both sides, and the outer wall of the air inlet pipe (25) is fixedly connected to a connecting rod (32), and the connecting rod (32) is slidably connected in the driving block (30); A driving frame (33) is slidably connected to the side wall of the sliding block (12), a spring (34) is fixedly connected between the driving frame (33) and the sliding block (12), a roller (35) is rotatably connected to the bottom end of the driving frame (33), the roller (35) is in contact with the annular gap of the cylinder (37), and both sides of the top end of the driving frame (33) are slidably connected in the second inclined groove (31).

7. A thick-walled cylinder annular seam hydrogen removal device according to claim 1, characterized in that: A pressure sensor (36) is provided on the side wall of the driving frame (33), and the pressure sensor (36) is used to check the elastic pressure of the spring (34).

8. A thick-walled cylinder annular seam hydrogen removal device according to claim 1, characterized in that: The bracket assembly comprises: A bottom plate (3), wherein the bottom plate (3) is slidably connected to the top of the base (1); A support frame (4), wherein the support frame (4) is slidably connected to the top of the base plate (3), and two second cylinders (5) are symmetrically fixedly connected to the top of the base plate (3), and the telescopic rods of the second cylinders (5) are fixedly connected to the side wall of the support frame (4); the top of the support frame (4) is fixedly connected to a third cylinder (6), and the top of the telescopic rod of the third cylinder (6) is fixedly connected to a mounting seat (7), and the mounting rod (8) is fixedly connected to the side wall of the mounting seat (7).

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