CN216912446U

CN216912446U - Dual-purpose automatic submerged arc horizontal welding frame of oil storage tank/LNG low-temperature tank

Info

Publication number: CN216912446U
Application number: CN202220233511.8U
Authority: CN
Inventors: 王瑜; 陈轶斌; 张饮海
Original assignee: Zhaofeng Electromechanical Equipment Shanghai Co ltd
Current assignee: Zhaofeng Electromechanical Equipment Shanghai Co ltd
Priority date: 2022-01-28
Filing date: 2022-01-28
Publication date: 2022-07-08
Anticipated expiration: 2032-01-28

Abstract

The utility model relates to an automatic submerged arc horizontal welding rack, in particular to an automatic submerged arc horizontal welding rack for an oil storage tank/LNG low-temperature tank. Compared with the prior art, the welding device has the advantages that the lower frame, the roller sliding groove mechanism, the welding flux dragging mechanism, the welding head, the welding wire disc, the upper frame and the travelling mechanism are matched for use, so that the dual-purpose welding effect of the oil storage tank/LNG low-temperature tank is achieved, and the problem that the existing transverse welding machine frame can only meet the use limitation of one tank is solved.

Description

Dual-purpose automatic submerged arc horizontal welding frame of oil storage tank/LNG low temperature tank

Technical Field

The utility model relates to an automatic submerged arc transverse welding machine frame, in particular to an oil storage tank/LNG low-temperature tank dual-purpose automatic submerged arc transverse welding machine frame.

Background

The submerged arc transverse seam welder is one universal automatic welder capable of welding large vertical cylinder with diameter greater than 4.5 m and may be used in high quality welding of carbon steel, low alloy steel, stainless steel, low temperature steel, their alloy and other material. The submerged arc welding process can be widely applied to welding of vertical cylinders such as petroleum storage tanks, LNG tanks, LPG storage tanks, blast furnaces, power plant chimneys and the like. The submerged arc automatic welding is suitable for position welding of various connector forms of medium plate butt joint, angle joint and lap joint of isosceles triangles, is a well-known common welding method, and has the advantages of attractive weld forming, reliable quality, high flaw detection qualification rate, low labor intensity, high production efficiency and the like, so that the submerged arc automatic welding is widely applied to welding engineering. However, when the submerged arc automatic welding is used in other places, the molten pool is buried with a flux, the temperature of the molten pool is high, and the molten iron is liable to sag, and the like, and therefore, the application is very limited. The development of the submerged-arc automatic transverse welding machine greatly improves the welding efficiency and the welding quality. At present, the equipment is mainly applied to welding of huge columns of petroleum storage tanks, blast furnaces and high buildings.

The oil storage tank is a vertical cylindrical movable horizontal cylindrical container for storing oil products, and the material is Q235 or low alloy steel according to the national regulations according to different user areas. The LNG low-temperature tank is a vertical or horizontal double-layer vacuum heat insulation storage tank for storing liquid oxygen, nitrogen, argon, carbon dioxide and other media. The inner container is made of austenitic stainless steel; the outer container material is selected as Q235B, Q245R or Q345R according to the national regulation according to different user areas, and the interlayer of the inner container and the outer container is filled with heat-insulating material expanded perlite (pearlite sand) and vacuumized. A welder frame is needed when the oil storage tank and the LNG low-temperature tank are installed. However, the existing welding machine frame cannot meet the use requirement due to the limited clearance between the inner layer of the LNG low-temperature tank and the inner layer of the outer container.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve at least one of the problems, and provides an automatic submerged arc transverse welding machine frame for an oil storage tank/LNG low-temperature tank, which is a welding machine frame capable of meeting the requirements of the oil storage tank and the LNG low-temperature tank at the same time.

The purpose of the utility model is realized by the following technical scheme:

the utility model provides a dual-purpose automatic submerged arc horizontal welding frame of oil storage tank LNG cryogenic tank, includes fixed connection's lower frame and upper frame, still includes the gyro wheel spout mechanism that is fixed in the lower frame inboard, along the gliding welding part of installing on gyro wheel spout mechanism of gyro wheel spout mechanism, be fixed in the frame inboard and be used for providing the wire reel of welding wire and be fixed in upper frame upper portion and oil storage tank LNG cryogenic tank matched with running gear of welding wire portion on the gyro wheel spout mechanism.

The walking mechanism is matched with the side wall of the oil storage tank or the LNG low-temperature tank, so that the automatic submerged arc transverse welding machine frame can move along the circumferential direction of the tank body; the welding wire disc provides welding wires for the position to be welded, which is aligned with the welding part, and welding is carried out through the welding part; the two are matched, so that the automatic submerged arc horizontal welding machine frame can realize the circumferential circle welding of the tank body. The automatic submerged arc transverse welding machine frame can also slide on the roller sliding groove mechanism, and convenience can be further provided for aligning the welding part to the position to be welded.

Preferably, the welding part comprises a welding flux supporting mechanism which slides along the roller sliding groove mechanism and is arranged on the roller sliding groove mechanism, and a welding head which is fixedly arranged on the welding flux supporting mechanism; and a light source tracking clamping block is also fixedly arranged on the welding head. The welding flux supporting mechanism provides welding flux for the welding process, and the welding flux can be selected according to the specific process; the welding head is used for welding, and the light source tracking clamping block arranged on the welding head can fix the light source tracking device, position the welding head of the welding head, and further adopt program control or manual control to enable the welding head of the welding head to continuously position the position to be welded.

Preferably, the top of the lower frame is also fixedly provided with a hopper and a vacuum pump which are matched with the welding flux supporting mechanism, and the hopper and the vacuum pump are respectively connected with the welding flux supporting mechanism. The hopper provides the welding flux for the welding flux supporting mechanism, and the vacuum pump can be matched with the welding flux supporting mechanism to pump the welding flux away to realize recovery, so that the welding flux can form a closed cycle, and the loss of the welding flux and the damage of the environment are reduced.

Preferably, the welding flux supporting mechanism is respectively and fixedly provided with a rotating end cover for the oil storage tank and a rotating end cover for the LNG low-temperature tank, and the rotating end cover for the oil storage tank and the rotating end cover for the LNG low-temperature tank are made of different materials. Rotate the end cover and directly support the jar body at the welding process, consequently for the material that avoids rotating the end cover influences the material purity of the jar body, and then influences the performance of the jar body, the rotation end cover of this embodiment need be furnished with many sets to adopt different materials to make in order to adapt to oil storage tank and LNG low temperature jar, select the material of rotating the end cover according to the material of the jar body during the use (for example can adopt 9Ni and Q235 in order to correspond respectively to be used for LNG low temperature jar and oil storage tank).

Preferably, the side edge of the lower frame is also fixedly connected with a telescopic top wheel mechanism.

Preferably, the lower frame is fixedly connected with the upper frame through a frame connecting stretching rod. The method comprises the following steps: the lower rack is connected and fixed with the rack and connected with the stretching rod through the cooperation among the rack connecting pin shaft, the screw, the flat elastic pad and the nut, and the rack and the stretching rod are connected with the upper rack through the cooperation among the rack connecting pin shaft, the screw, the flat elastic pad and the nut.

Preferably, a reinforcing frame is further arranged between the lower frame and the upper frame, and the lower frame and the reinforcing frame and the upper frame are fixedly connected through a frame connecting stretching rod respectively. The fixed connection mode between the upper frame and the reinforcing frame and between the lower frame and the reinforcing frame is the same as that of the upper frame and the lower frame. Through setting up strengthening frame, can further increase the height under the sufficient prerequisite of frame bulk strength guaranteeing.

Preferably, the back of the lower frame is respectively and fixedly provided with a back guardrail for the oil storage tank and a back guardrail for the LNG low-temperature tank. Set up the operating space that the back guardrail not only can increase the undercarriage, can also provide the protective capacities, provide the guarantee for safety in production, safe construction.

Preferably, the travelling mechanism is further fixed with a hanger and a cable bracket. The cable bracket classifies and gathers all wires used for the rack, so that the disorder of lines is reduced, the production construction is influenced, and the safety and the tidiness are improved; the gallows can be hoisted the welding part when needing, makes it can be when the whole height of frame is unchangeable, can weld the jar body of not co-altitude position, and then can be adapted to oil storage tank and LNG cryogenic tank. When the welding part is hoisted by the hanger, the welding flux supporting mechanism and the welding head of the welding part can retract into the lower rack through the roller sliding groove mechanism, so that the damage is avoided.

Preferably, the running mechanism is provided with a driving wheel for the oil storage tank and a driving wheel for the LNG cryogenic tank respectively, and the driving wheel for the oil storage tank and the driving wheel for the LNG cryogenic tank are made of different materials. The drive wheel and jar body direct contact, for avoiding influencing the material intensity of jar body, need to correspond oil storage tank and LNG low-temperature tank and adopt different materials (can adopt 9Ni and Q235 with corresponding LNG low-temperature tank and the oil storage tank of being used for respectively for example).

Preferably, the travelling mechanism is provided with a plurality of sets of driving motors, so that the movement stability in the welding process can be ensured.

Preferably, an electrical system is further fixed on the inner side of the lower frame, so that operation of constructors is facilitated.

Preferably, a lighting system is further fixed at the top of the inner side of the lower frame, so that enough light is provided for construction.

Preferably, canvas is fixed on the outer side of the lower frame, and can cover arc light generated by welding to avoid damaging nearby people.

Preferably, a safety guardrail is fixed on the upper frame.

The working principle of the utility model is as follows:

the walking mechanism is matched with the side wall of the oil storage tank or the LNG low-temperature tank, so that the automatic submerged arc transverse welding machine frame can move along the circumferential direction of the tank body; the welding wire disc provides welding wires for the position to be welded, which is aligned with the welding part, and welding is carried out through the welding part; the two parts are matched, so that the automatic submerged arc horizontal welding machine frame can realize the circumferential circle welding of the tank body. The automatic submerged arc transverse welding machine frame can also slide on the roller sliding groove mechanism, and convenience can be further provided for aligning the welding part to the position to be welded.

Compared with the prior art, the utility model has the following beneficial effects:

1. the automatic submerged arc horizontal welding rack is compact in overall structure and can be suitable for LNG low-temperature tanks with limited inner gaps between the inner container and the outer container; meanwhile, the rotary end cover of the welding flux supporting mechanism and the driving wheel of the walking mechanism, namely, the part which is in direct contact with the tank body to be welded is provided with a plurality of sets of different materials, so that the welding flux supporting mechanism can be suitable for the tank bodies made of different materials, and the dual-purpose of the automatic submerged arc transverse welding machine frame in an oil storage tank and an LNG low-temperature tank is realized.

2. The flux supporting mechanism is matched with the vacuum pump and the hopper, so that the recovery of unused flux can be realized, and the waste of the flux and the pollution to the environment are avoided. The light source tracking device can be additionally arranged on the light source tracking clamping block, and then the automatic alignment of the welding head in the welding process can be realized. The arrangement of canvas, electrical and lighting systems and the like further facilitates the use and production of the constructors.

3. Through the back guardrail that sets up to be used for the oil storage tank respectively and be used for the LNG cryogenic tank, can increase the operating space of lower frame to can improve the security of device. The travelling mechanism is provided with a plurality of sets of driving motors, so that the rack can be ensured to stably move in the movement process, the welding quality can be improved, and the construction safety can be improved.

4. This frame can also add between last frame and lower frame and establish one section strengthening frame, can increase the height of frame under the condition of guaranteeing frame bulk strength to the jar body of adaptation difference uses.

Drawings

FIG. 1 is a schematic front view of an automatic submerged arc horizontal welding machine frame according to the present invention;

FIG. 2 is a schematic side view of the automatic submerged arc horizontal welding machine frame of the present invention;

in the figure: 1, lower rack; 2-a roller chute mechanism; 3-a flux holding mechanism; 4-welding the head; 5-an electrical system; 6-wire reel; 7-a lighting system; 8-a vacuum pump; 9-a hopper; 10-safety barrier; 11-a hanger; 12-a cable tray; 13-a telescopic top wheel mechanism; 14-a light source tracking clamping block; 15-connecting a pin shaft with the frame; 16-the frame is connected with a stretching rod; 17-a reinforcing frame; 18-mounting the frame; 19-a running gear; 20-the walking mechanism is connected with a pin shaft; 21-canvas.

Detailed Description

The utility model is described in detail below with reference to the figures and specific embodiments. It should be apparent that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "fixed," and "connected" are to be construed broadly, such as "connected," which may be either fixedly or removably connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

A dual-purpose automatic submerged arc horizontal welding rack for an oil storage tank/LNG low-temperature tank comprises a lower rack 1 and an upper rack 18 which are fixedly connected, and further comprises a roller chute mechanism 2 fixed on the inner side of the lower rack 1, a welding part arranged on the roller chute mechanism 2 and sliding along the roller chute mechanism 2, a welding wire disc 6 fixed on the inner side of the rack and used for providing welding wires for the welding part, and a traveling mechanism 19 fixed on the upper part of the upper rack 18 and matched with the oil storage tank/LNG low-temperature tank.

More specifically, in the present embodiment:

please refer to fig. 1 and fig. 2; dual-purpose automatic submerged arc horizontal welding frame of oil storage tank LNG cryogenic tank, including lower frame 1, upper ledge 18 and running gear 19 triplex, gyro wheel spout mechanism 2 is installed through the screw to the inboard lower extreme of lower frame 1, fixedly connected with solder flux holds in the palm on gyro wheel spout mechanism 2 and holds mechanism 3, be fixed with welding head 4 on the solder flux holds in the palm the mechanism 3, install light source tracking grip block 14 on the welding head 4, 1 inboard left side fixedly connected with electrical system 5 of lower frame, 1 inboard fixedly connected with lighting system 7 of lower frame, 1 inboard fixedly connected with wire reel 6 of lower frame, 1 right side fixedly connected with flexible top wheel mechanism 13 of lower frame, 1 top fixedly connected with hopper 9 of lower frame and vacuum pump 8, 1 outside fixedly connected with canvas 21 of lower frame, lower frame 1 is through frame connecting pin 15 and screw connecting pin 15 and canvas mechanism 13, The flat elastic pad and the nut are connected with the fixed frame and connected with the stretching rod 16, the frame and the stretching rod 16 are connected with the screw, the flat elastic pad and the nut through the frame connecting pin shaft 15 and connected with the reinforcing frame 17 or can be directly connected with the upper frame 18, the upper frame 18 is fixed with the safety guardrail 10 through the screw, the upper frame 18 is fixedly connected with the travelling mechanism 19 through the travelling mechanism connecting pin shaft 20, the travelling mechanism 19 is fixed with the hanger 11 and the cable bracket 12 through the screw, so that the dual-purpose welding effect of the oil storage tank/LNG low-temperature tank is met, the roller chute mechanism 2 is compact in structure and convenient to operate, and the welding flux supporting mechanism 3 and the welding head 4 are retracted into the lower frame 1 when the frame is hoisted, so that the collision is avoided; the lower rack 1 is provided with two sets of back guardrails which are respectively used for an oil storage tank and an LNG low-temperature tank, so that the operation space of the lower rack 1 is increased; the welding flux supporting mechanism 3 is matched with two sets of rotating end covers made of different materials, and the walking mechanism 19 is matched with two sets of driving wheels made of different materials and respectively used for an oil storage tank and an LNG low-temperature tank; the traveling mechanism 19 is provided with two sets of driving motors, so that the rack can travel stably in the welding process.

All the components in the utility model are universal standard components or components known by those skilled in the art, the structure and principle of the components are known by technical manuals or conventional experimental methods, meanwhile, the standard components used in the application document can be purchased from the market, the components in the application document can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each component adopts conventional means such as bolts, screws, welding and the like which are mature in the prior art, and machines, components and equipment adopt conventional models in the prior art, and detailed description is not given here.

When the welding machine is used, the welding effect meeting the requirements of the oil storage tank/LNG low-temperature tank is achieved through the matching use of the lower frame 1, the roller chute mechanism 2, the welding flux supporting mechanism 3, the welding machine head 4, the light source tracking clamping block 14, the welding wire disc 6, the hopper 9, the telescopic top wheel mechanism 13, the vacuum pump 8, the reinforcing frame 17, the frame connecting stretching rod 16, the frame connecting pin shaft 15, the upper frame 18, the traveling mechanism 19, the traveling mechanism connecting pin shaft 20, the safety guardrail 10, the hanging bracket 11, the cable bracket 12, the canvas 21, the lighting system 7 and the electrical system 5, and the problems that the existing common transverse welding machine frame is limited by the structure of the low-temperature storage tank, the whole thickness of the standard common transverse welding machine exceeds the gap of the outer side of the storage tank, and the use requirements of the two storage tanks cannot be met are solved.

The working principle of the utility model is as follows:

the traveling mechanism 19 is matched with the side wall of the oil storage tank or the LNG low-temperature tank, so that the automatic submerged arc transverse welding machine frame can move along the circumferential direction of the tank body; the wire reel 6 supplies welding wire to the position to be welded, which is aligned with the welding part, and welding is carried out through the welding part; the two parts are matched, so that the automatic submerged arc horizontal welding machine frame can realize the circumferential circle welding of the tank body. The automatic submerged arc transverse welding machine frame can also slide on the roller sliding groove mechanism 2, and convenience can be further provided for aligning the welding part to the position to be welded.

The embodiments described above are intended to facilitate the understanding and use of the utility model by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims

1. The utility model provides a dual-purpose automatic submerged arc horizontal welding frame of oil storage tank/LNG cryogenic tank, includes fixed connection's lower frame (1) and upper frame (18), its characterized in that still includes gyro wheel spout mechanism (2) that are fixed in lower frame (1) inboard, along the gliding welding portion of installing on gyro wheel spout mechanism (2) of gyro wheel spout mechanism (2), be fixed in wire reel (6) that lower frame (1) inboard is used for providing the welding wire to the welding portion and be fixed in upper frame (18) upper portion and oil storage tank/LNG cryogenic tank matched with running gear (19).

2. The dual-purpose automatic submerged arc transverse welding frame for the oil storage tank/LNG low-temperature tank is characterized in that the welding part comprises a welding flux holding mechanism (3) which is arranged on the roller chute mechanism (2) and slides along the roller chute mechanism (2) and a welding head (4) which is fixedly arranged on the welding flux holding mechanism (3); and a light source tracking clamping block (14) is also fixedly arranged on the welding head (4).

3. The dual-purpose automatic submerged arc transverse welding machine frame for the oil storage tank/LNG low-temperature tank is characterized in that a hopper (9) and a vacuum pump (8) which are matched with the welding flux supporting mechanism (3) are fixedly arranged at the top of the lower frame (1), and the hopper (9) and the vacuum pump (8) are respectively connected with the welding flux supporting mechanism (3).

4. The dual-purpose automatic submerged arc transverse welding machine frame of the oil storage tank/LNG cryogenic tank as claimed in claim 2 or 3, characterized in that the welding flux supporting mechanism (3) is respectively and fixedly provided with a rotating end cover for the oil storage tank and a rotating end cover for the LNG cryogenic tank, and the rotating end cover for the oil storage tank and the rotating end cover for the LNG cryogenic tank are made of different materials.

5. The automatic submerged arc transverse welding machine frame for the oil storage tank/LNG low-temperature tank is characterized in that a telescopic top wheel mechanism (13) is fixedly connected to the side edge of the lower frame (1).

6. The automatic submerged arc transverse welding machine frame for the oil storage tank/LNG low-temperature tank is characterized in that the lower frame (1) is fixedly connected with the upper frame (18) through a frame connecting stretching rod (16).

7. The automatic submerged arc transverse welding frame for the oil storage tank/LNG low-temperature tank is characterized in that a reinforcing frame (17) is further arranged between the lower frame (1) and the upper frame (18), and the lower frame (1) and the reinforcing frame (17) and the upper frame (18) are fixedly connected through frame connecting stretching rods (16).

8. The dual-purpose automatic submerged arc transverse welding machine frame for the oil storage tank/LNG low-temperature tank is characterized in that a back side guardrail for the oil storage tank and a back side guardrail for the LNG low-temperature tank are fixedly arranged on the back side of the lower machine frame (1) respectively.

9. The automatic submerged arc transverse welding frame for the oil storage tank/LNG low-temperature tank is characterized in that a hanger (11) and a cable bracket (12) are further fixed to the travelling mechanism (19).

10. The dual-purpose automatic submerged arc transverse welding frame for the oil storage tank/LNG cryogenic tank as claimed in claim 1, characterized in that the traveling mechanism (19) is respectively provided with a driving wheel for the oil storage tank and a driving wheel for the LNG cryogenic tank, and the driving wheels for the oil storage tank and the driving wheels for the LNG cryogenic tank are made of different materials.