Gas protection device for inner wall of stainless steel welded pipe

Abstract

The utility model relates to the technical field of steel pipe welding, in particular to a stainless steel welded pipe inner wall gas protection device which comprises supporting steel, fixing legs are fixedly connected to the bottom end of the supporting steel, a control panel is installed on the front surface of the supporting steel, and a gas protection block is installed in the supporting steel. A first gas hole is formed in the gas protection block, and a gas filling pipe is mounted on the right side of the gas protection block; and the inclined blocks are installed on the two sides of the top face of the gas protection block, the number of the inclined blocks is two, and second gas holes are formed in the inclined blocks. Gas can be sprayed out through the first gas holes and the second gas holes to protect the lower portion of the welding position, namely the inner wall, so that the protection function is achieved, the gas protection block and the welding gun body are convenient to move integrally, and the front surface and the rear surface of a welding seam can be protected through the design of the inclined blocks and the second gas holes.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel pipe welding technical field, concretely is a stainless steel welded pipe inner wall gas protection device. BACKGROUND

[0002] Generally, when welding the straight seam of large-diameter stainless steel pipe, the steel pipe is placed on the rack, and the outer surface of the weld is easy to protect when welding this straight seam, usually a protective gas pipe is arranged on the side of the welding gun to pass inert gas to protect the outer surface of the weld, and for the weld of the inner wall of the steel pipe, the two ends of the steel pipe are usually plugged with cotton, and then inert gas is filled in.

[0003] For this, China authorized publication number: CN102632318B discloses a kind of stainless steel welded pipe inner wall gas protection device, argon arc welding machine is used in conjunction with, including first support, second support, gas protection block and the traction mechanism that gas protection block can move with welding gun in same direction, first support and second support are respectively arranged in fluorine arc welding machine two sides, slot steel is horizontally arranged between first support and second support, slot steel is located below welding gun, slot of slot steel is provided with freely movable gas protection block.In the present application, a plurality of fixed pulleys and steel wires are connected in series to enable the inert gas protection block to move synchronously and in the same direction as the welding gun, thereby achieving local welding and local gas protection, greatly saving the use of inert gas, and ensuring product quality.At the same time, the device can ensure the quality of the weld, save time and greatly improve work efficiency.

[0004] However, in actual use, the gas protection block moves by following the movement of the welding gun through the design of pulleys and steel wires, which is relatively cumbersome to operate, and the steel wire will wear out after long-term use, which is not conducive to long-term use, and the gas protection block cannot protect the outer surface of the weld of the steel pipe when spraying gas, so it is necessary to improve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of stainless steel welded pipe inner wall gas protection device to solve the problems that gas protection block moves by following the movement of the welding gun through the design of pulleys and steel wires in the above background art, which is relatively cumbersome to operate, and the steel wire will wear out after long-term use, which is not conducive to long-term use, and the gas protection block cannot protect the outer surface of the weld of the steel pipe when spraying gas.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a stainless steel welded pipe inner wall gas protection device, support steel is fixedly connected with fixed leg on the bottom end, the front surface of support steel is installed with control panel, the inside of support steel is installed with gas protection block, the inside of gas protection block is provided with first gas hole, the right side of gas protection block is installed with inflation pipe,

[0007] The inclined block is installed on both sides of the top surface of the gas protection block, the inclined block is provided with two groups, the second gas hole is arranged in the inclined block, the installation positions are symmetrical to each other, the sliding groove is arranged in the inner side wall of the support steel, the connecting plate is installed in the inside of the sliding groove, and the connecting plate is installed on the back surface of the gas protection block.

[0008] Preferably, the top surface of the connecting plate is fixedly connected with a top frame, and the lower end of the top frame is installed with a welding gun body.

[0009] Preferably, the right side of the connecting plate is installed with a telescopic rod, and the end, away from the connecting plate, of the telescopic rod is provided with a fixed block.

[0010] Preferably, the right side surface of the support steel is fixedly connected with a guide plate, and the top surface of the guide plate is installed with a guide ring.

[0011] Preferably, the inner side wall of the guide ring is provided with an auxiliary roller, and the auxiliary roller is provided with two groups.

[0012] Preferably, the top surface of the support steel is installed with a limiting plate, the inside of the limiting plate is installed with an extrusion pad, and the front surface of the limiting plate is installed with an auxiliary ball.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1、The stainless steel welded pipe inner wall gas protection device is provided with support steel, gas protection block, first gas hole, inflation pipe, inclined block, second gas hole, sliding groove, connecting plate, top frame, welding gun body, telescopic rod and fixed block, when in use, first, install the steel pipe on the surface of support steel and gas protection block, when welding, start welding the weld joint by the welding gun body, when moving the weld joint, start the telescopic rod, drive the connecting plate to slide in the sliding groove by the telescopic rod, so that the whole gas protection block also moves with the connecting plate and the welding gun body, then fill the inert gas into the inside of the gas protection block through the inflation pipe, and the gas protection block can spray the gas through the first gas hole and the second gas hole to protect the inner wall below the weld joint, so that the protection function is realized, and the whole gas protection block and the welding gun body are convenient to move, and the front and back surfaces of the weld joint can be protected by the inclined block and the second gas hole, so that the whole protection effect is good, and the practicability of the design is embodied.

[0015] 2、The gas protection device for the inner wall of the stainless steel welded pipe is provided with a guide plate, a guide ring, an auxiliary roller, a limiting plate, an extrusion pad and auxiliary balls, and when in use, the steel pipe during welding can be stably supported through the design of the guide ring and the auxiliary roller, and the steel pipe can also be moved, the back surface of the steel pipe can be abutted through the design of the extrusion pad in the limiting plate, the steel pipe can be prevented from shaking during welding, and the steel pipe can also be moved through the design of the auxiliary balls, and the functionality of the design is embodied. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic view of the structure of the utility model;

[0017] Figure 2 It is a three-dimensional schematic view of the structure of the telescopic rod and the connecting plate of the utility model;

[0018] Figure 3 It is a three-dimensional schematic view of the structure of the guide plate and the guide ring of the utility model;

[0019] Figure 4 It is a three-dimensional schematic view of the structure of the limiting plate and the extrusion pad of the utility model.

[0020] In the drawing: 1, support steel; 2, fixed leg; 3, control panel; 4, gas protection block; 5, first air hole; 6, inflation pipe; 7, inclined block; 8, second air hole; 9, sliding groove; 10, connecting plate; 11, top frame; 12, welding gun body; 13, telescopic rod; 14, fixed block; 15, guide plate; 16, guide ring; 17, auxiliary roller; 18, limiting plate; 19, extrusion pad; 20, auxiliary ball. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figures 1-4 An embodiment provided by the utility model:

[0023] The control panel 3, the gas protection block 4, the inflation pipe 6, the welding gun body 12, the telescopic rod 13 and the auxiliary roller 17 used in the application are all products that can be directly purchased on the market, the principles and connection modes thereof are all prior art known by those skilled in the art, and thus will not be described here again, including the support steel 1, the bottom end of the support steel 1 is fixedly connected with the fixed leg 2, the front surface of the support steel 1 is installed with the control panel 3, the inside of the support steel 1 is installed with the gas protection block 4, the inside of the gas protection block 4 is provided with the first air hole 5, the right side of the gas protection block 4 is installed with the inflation pipe 6, the right side surface of the support steel 1 is fixedly connected with the guide plate 15, the top surface of the guide plate 15 is installed with the guide ring 16, the inside of the guide ring 16 is provided with the auxiliary roller 17, the auxiliary roller 17 is provided with two groups, the top surface of the support steel 1 is installed with the limiting plate 18, the inside of the limiting plate 18 is installed with the extrusion pad 19, the front surface of the limiting plate 18 is installed with the auxiliary ball 20, the design of the guide ring 16 and the auxiliary roller 17 can stably support the steel pipe during welding, and can also assist the movement of the steel pipe, then the design of the extrusion pad 19 inside the limiting plate 18 can abut against the back surface of the steel pipe, so as to avoid the shaking of the steel pipe during welding, and the design of the auxiliary ball 20 can also assist the movement of the steel pipe;

[0024] The inclined block 7 is installed on the top surface of the gas protection block 4 on both sides, the inclined block 7 is provided with two groups, the inside of the inclined block 7 is provided with the second air hole 8, the installation positions are symmetrical to each other, the inside of the support steel 1 is provided with the sliding groove 9, the inside of the sliding groove 9 is installed with the connecting plate 10, the connecting plate 10 is installed on the back surface of the gas protection block 4, the top surface of the connecting plate 10 is fixedly connected with the top frame 11, the lower end of the top frame 11 is installed with the welding gun body 12, the right side of the connecting plate 10 is installed with the telescopic rod 13, the end away from the connecting plate 10 of the telescopic rod 13 is provided with the fixed block 14, first, the steel pipe is installed on the surface of the support steel 1 and the gas protection block 4, when welding, at this time, the welding gun body 12 starts to weld the weld joint, when the weld joint is moved, at this time, the telescopic rod 13 is started, the connecting plate 10 is driven to slide in the sliding groove 9 by the telescopic rod 13, so that the whole gas protection block 4 will also move together with the connecting plate 10 and the welding gun body 12, then the inflation pipe 6 fills the inert gas into the inside of the gas protection block 4, the gas can be sprayed out through the first air hole 5 and the second air hole 8 to protect the inner wall below the welding position, so as to realize the protection function, and the design of the whole gas protection block 4 and the welding gun body 12 is convenient to move, and the design of the inclined block 7 and the second air hole 8 can also protect the front and back surfaces of the weld joint, and the overall protection effect is good.

[0025] Working principle: when the staff uses the device, first, the device is connected with the power supply, thereby providing power support for the device, first, the steel pipe is installed on the surface of the supporting steel 1 and the gas protection block 4, when welding, at this time, the welding gun body 12 starts to weld the weld, when the weld is moved, at this time, the telescopic rod 13 is started, the connecting plate 10 is driven in the sliding groove 9, thereby the whole gas protection block 4 also moves with the connecting plate 10 and the welding gun body 12, then the inert gas is filled into the gas protection block 4 through the inflation pipe 6, the gas is sprayed through the first gas hole 5 and the second gas hole 8 to protect the inner wall below the welding position, thereby realizing the protection function, and the design is convenient when moving the gas protection block 4 and the welding gun body 12 as a whole, and the design of the inclined block 7 and the second gas hole 8 can also protect the front and rear surfaces of the weld, the design of the guide ring 16 and the auxiliary roller 17 can stably support the steel pipe during welding, and can also assist the movement, then the design of the limiting plate 18 and the extrusion pad 19 can resist the back of the steel pipe, avoid the steel pipe from shaking during welding, at the same time, the design of the auxiliary ball 20 can also assist the movement of the steel pipe, the above is all the working principle of the utility model.

[0026] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form; any ordinary technical personnel in the industry can implement the utility model according to the above description and the drawings; however, any equivalent changes, modifications and evolution of the above disclosed technical content within the scope of the technical scheme of the utility model are equivalent embodiments of the utility model; at the same time, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the utility model are still within the protection scope of the technical scheme of the utility model.

Claims

1. A stainless steel welded pipe inner wall gas protection device, comprising a support steel (1), the bottom end of the support steel (1) is fixedly connected with a fixed leg (2), and the front surface of the support steel (1) is provided with a control panel (3), characterized in that: The inside of the support steel (1) is internally provided with a gas protection block (4), the inside of the gas protection block (4) is provided with a first gas hole (5), the right side of the gas protection block (4) is provided with an inflation pipe (6); The inclined block (7) is installed on both sides of the top surface of the gas protection block (4), the inclined block (7) is provided with two groups, the inside of the inclined block (7) is provided with a second gas hole (8), the installation positions are symmetrical to each other, the inner side wall of the support steel (1) is provided with a sliding groove (9), the inside of the sliding groove (9) is provided with a connecting plate (10), the connecting plate (10) is installed on the back surface of the gas protection block (4).

2. A device for protecting the inner wall of a stainless steel welded pipe from the atmosphere, according to claim 1, characterized in that: The top surface of the connecting plate (10) is fixedly connected with a top frame (11), the lower end of the top frame (11) is provided with a welding gun body (12).

3. A device for protecting the inner wall of a stainless steel welded pipe from the atmosphere, according to claim 1, characterized in that: The right side of the connecting plate (10) is provided with a telescopic rod (13), one end of the telescopic rod (13) away from the connecting plate (10) is provided with a fixed block (14).

4. A device for protecting the inner wall of a stainless steel welded pipe from the atmosphere, according to claim 1, characterized in that: The right side surface of the support steel (1) is fixedly connected with a guide plate (15), the top surface of the guide plate (15) is provided with a guide ring (16).

5. A device for protecting the inner wall of a stainless steel welded pipe from the atmosphere, according to claim 4, characterized in that: The inner side wall of the guide ring (16) is provided with an auxiliary roller (17), the auxiliary roller (17) is provided with two groups.

6. A device for protecting the inner wall of a stainless steel welded pipe from the atmosphere, according to claim 1, characterized in that: The top surface of the support steel (1) is provided with a limiting plate (18), the inside of the limiting plate (18) is provided with an extrusion pad (19), the front surface of the limiting plate (18) is provided with an auxiliary ball (20).

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