Argon filling protection device for martensite heat-resistant steel pipeline welding

Abstract

The utility model discloses a martensitic heat-resistant steel pipeline welding argon filling protection device which comprises two rubber plates, a connecting rod penetrates through the middle of each rubber plate, and a reinforcing plate is installed at one end of each connecting rod. The utility model has the beneficial effects that the tight supporting and reinforcing assembly is arranged on one side of the reinforcing plate, so that after the rubber plate is arranged in the martensitic heat-resistant steel pipeline to be welded, the screw head can be rotated to realize the movement of the screw sleeve along the screw head; the supporting cushion is arranged on the threaded sleeve so that the supporting cushion can abut against the inner wall of the martensite heat-resistant steel pipeline through the connecting rod and the supporting rod in the moving process of the threaded sleeve, it is guaranteed that the position of the rubber plate is fixed after reinforcement, auxiliary reinforcement limiting of the edge of the rubber plate is achieved, and bending deformation of the edge of the rubber plate in the martensite heat-resistant steel pipeline welding process is avoided. And gas leakage failure in the argon chamber is prevented, so that the welding quality of the martensite heat-resistant steel pipeline is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field, specifically to martensitic heat -resistant steel pipeline welding argon protection device. BACKGROUND

[0002] In the martensitic heat -resistant steel pipeline welding process, in order to avoid the back of the weld oxidation, reduce the welding quality, need to replace the air in the pipe with inert gas argon. At present, martensitic heat -resistant steel pipeline welding mainly uses rubber plate to block and establish argon chamber, that is, two rubber plates with the same inner diameter as the pipeline are vertically placed on both sides of the welding opening inside the pipeline to establish argon chamber. Because the argon chamber needs to be adjusted after being established, the pipeline welding time is long, and the rubber plate used as the argon chamber sealing plate may be tilted due to the shaking of the pipeline or the instability of the rubber plate itself, causing the failure of the argon chamber.

[0003] In order to solve the problem of the rubber plate used as the argon chamber sealing plate tilting during the welding process, a patent number CN202122504195.1 discloses a anti-toppling martensitic heat -resistant steel pipeline welding argon protection device, which comprises an anti-toppling martensitic heat -resistant steel pipeline welding argon protection device; an argon chamber is formed between the high-temperature rubber plate at both ends and the martensitic heat -resistant steel pipeline; an argon gas filling pipe is arranged below the high-temperature rubber plate, and the argon gas filling pipe passes through the high-temperature rubber plate and the fixed iron plate to form an air inlet.

[0004] Although the anti-toppling martensitic heat -resistant steel pipeline welding argon protection device disclosed in the above patent can prevent the rubber plate from tilting during the welding process of the martensitic heat -resistant steel pipeline to some extent and ensure the reliable sealing of the argon chamber, the edge part of the rubber plate extending out of the fixed iron plate in the anti-toppling martensitic heat -resistant steel pipeline welding argon protection device disclosed in the above patent still cannot be effectively tightened and limited, and the rubber plate itself has a certain elasticity, so that the edge part of the reinforced rubber plate is still prone to bending deformation under the action of large torsion during the welding process of the martensitic heat -resistant steel pipeline, resulting in gas leakage and failure of the argon chamber during the welding process of the martensitic heat -resistant steel pipeline. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem in the prior art, and provides a martensitic heat -resistant steel pipeline welding argon protection device which can assist in limiting the rubber plate during the welding process and prevent the edge part of the rubber plate from bending and deforming when subjected to a large torsion during the welding process.

[0006] The utility model discloses a martensite heat -resistant steel pipeline welding argon filling protection device, including rubber board, the rubber board has two, and the middle part of each rubber board is penetrated with a connecting rod, the one end of connecting rod is installed with the reinforcing plate, the connecting rod upper located reinforcing plate department still is installed with bracing tight reinforcement subassembly, the reinforcing plate side of facing rubber board is installed with fastening assembly, wherein bracing tight reinforcement subassembly includes the screw head of forming in the connecting rod end, installs the screw bush on screw head, the connecting rod that is annular installation is installed on the screw bush outer wall, the bracing bar of installing in each connecting rod back to screw bush one end and the bracing pad of installing in bracing bar back to reinforcing plate one end.

[0007] Through adopting above technical scheme, when the rubber board is placed in the martensite heat -resistant steel pipeline and is located at both sides of the welding part, the screw bush is rotated through the connecting rod, and the bracing pad is tightly pressed on the inner wall of the martensite heat -resistant steel pipeline through the connecting rod and the bracing bar after the screw bush is rotated, at this time, the rubber board is fixed together tightly under the action of the fastening assembly due to the reinforcing plate, so that the position between the rubber board and the inner wall of the martensite heat -resistant steel pipeline is also relatively fixed after the rubber pad is braced, further increase the structural strength of the rubber board in the martensite heat -resistant steel pipeline, prevent the rubber board edge part from being bent and leaking when the rubber board edge part is subjected to the large torsion action in the process of the martensite heat -resistant steel pipeline welding.

[0008] Further, the fastening assembly includes three screw rods installed on the side wall of the reinforcing plate and a cross nut installed on each screw rod.

[0009] Through adopting the above technical scheme, the reliable limiting fixation between the rubber board and the reinforcing plate can be realized by locking the cross nut after the screw rod passes through the rubber board.

[0010] Further, the screw rod penetrates the rubber board, and the cross nut is composed of a nut and four short shafts installed on the periphery of the nut.

[0011] Through adopting the above technical scheme, the cross nut can be conveniently screwed without the help of external screwing tools.

[0012] Further, the connecting rod back to the rubber board one end still is installed with split type handle, and the split type handle and the connecting rod between still are installed with connecting assembly.

[0013] Through adopting the above technical scheme, the handle is mainly used for realizing the convenient rotation of the connecting rod, and the connecting assembly can ensure the reliable connection of the split type handle and the connecting rod.

[0014] Further, the connecting assembly comprises a clamping groove formed on the two split parts of the split handle, a plug uniformly arranged in the clamping groove, and a plug hole formed on the connecting rod and matched with the plug.

[0015] By inserting the plug on the split handle into the plug hole, the connecting rod can be adjusted to rotate synchronously with the split handle.

[0016] Further, the two split parts of the split handle are respectively provided with a recess and a plug station, and the two split parts of the split handle are fixed in a plug-in manner.

[0017] By adopting the above technical scheme, the two split parts of the split handle can be conveniently disassembled.

[0018] Further, the screw passes through the screw sleeve and is threadedly connected with the screw sleeve, and the connecting rod is hingedly connected with the supporting rod and the screw sleeve.

[0019] By adopting the above technical scheme, the connecting rod can drive the supporting rod to rotate around the reinforcing plate under the action of the screw sleeve.

[0020] Further, one end of the supporting rod is hingedly connected with the reinforcing plate, and the other end of the supporting rod is adhesively connected with the supporting pad, the supporting pad is made of rubber, and one edge of the rubber plate is further provided with an inflation pipe.

[0021] By adopting the above technical scheme, the supporting pad can be lifted after the supporting rod rotates, so that the supporting pad contacts the inner wall of the martensitic heat-resistant steel pipeline to be welded.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] The utility model discloses a supporting and reinforcing assembly is installed on one side of the reinforcing plate, so that after the rubber plate is installed in the martensitic heat-resistant steel pipeline to be welded, the screw sleeve can be moved along the screw by rotating the screw, so that the supporting pad is lifted on the inner wall of the martensitic heat-resistant steel pipeline by the connecting rod and the supporting rod during the movement of the screw sleeve, the position of the rubber plate is fixed after reinforcement, the edge part of the rubber plate is assisted and reinforced and limited, the edge part of the rubber plate is prevented from being deformed during the welding of the martensitic heat-resistant steel pipeline, the leakage in the argon chamber is prevented, the welding quality of the martensitic heat-resistant steel pipeline is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the structure schematic diagram of the martensitic heat-resistant steel pipeline welding argon filling protection device.

[0025] Figure 2 is the left view of the martensitic heat-resistant steel pipeline welding argon filling protection device of the utility model;

[0026] Figure 3 is the structural schematic view of the reinforcing plate and fastening assembly in the martensitic heat-resistant steel pipeline welding argon filling protection device of the utility model;

[0027] Figure 4 is the structural schematic view of the rubber plate in the martensitic heat-resistant steel pipeline welding argon filling protection device of the utility model;

[0028] Figure 5 is the split view between the split handle and connecting rod in the martensitic heat-resistant steel pipeline welding argon filling protection device of the utility model.

[0029] The sign of the drawing mark is as follows:

[0030] 1, fastening assembly; 101, screw rod; 102, cross nut; 2, bracing and fastening assembly; 201, bracing pad; 202, connecting rod; 203, bracing rod; 204, screw head; 205, screw sleeve; 3, reinforcing plate; 4, rubber plate; 5, split handle; 6, connecting rod; 7, connecting assembly; 701, clamping groove; 702, plug; 703, jack; 8, inflation pipe. DETAILED DESCRIPTION

[0031] In order for the personnel in the technical field to better understand the utility model scheme, the technical scheme in the utility model embodiments will be described clearly and completely in the following with the drawings in the utility model embodiments, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor should belong to the scope of the utility model protection.

[0032] As shown in Figures 1-3 The martensitic heat-resistant steel pipeline welding argon filling protection device in the embodiment includes rubber plates 4, the rubber plates 4 are two, each rubber plate 4 is penetrated by a connecting rod 6 in the middle, the connecting rod 6 is installed with a reinforcing plate 3 at one end, the connecting rod 6 is installed with a bracing and fastening assembly 2 at the reinforcing plate 3, the reinforcing plate 3 is installed with a fastening assembly 1 on the side facing the rubber plate 4, wherein the bracing and fastening assembly 2 includes a screw head 204 shaped at the end of the connecting rod 6, a screw sleeve 205 installed on the screw head 204, a connecting rod 202 installed in the form of a ring on the outer wall of the screw sleeve 205, a bracing rod 203 installed at the end of each connecting rod 202 away from the screw sleeve 205 and a bracing pad 201 installed at the end of the bracing rod 203 away from the reinforcing plate 3;

[0033] The embodiment of the utility model provides a kind of martensitic heat-resistant steel pipeline welding argon-filling protection device, which can assist limiting rubber plate 4 during welding process, avoid the bending deformation of the edge part of rubber plate 4 when subjected to large torsion action during welding process, solve the problem that the edge part of rubber plate fixed to the iron plate in the prior art martensitic heat-resistant steel pipeline welding argon-filling protection device is not effectively tightened and limited, and because the rubber plate itself has a certain elasticity, the edge part of the reinforced rubber plate is still prone to bending deformation under the action of large torsion during the welding process of martensitic heat-resistant steel pipeline, thereby causing the argon chamber to leak and fail during the welding process of martensitic heat-resistant steel pipeline.The overall idea of the embodiment of the utility model for solving the above problems is to move the screw sleeve 205 along the screw head 204 by rotating the screw head 204, so as to top the tightening pad 201 on the inner wall of the martensitic heat-resistant steel pipeline by means of the connecting rod 202 and the supporting rod 203 during the movement of the screw sleeve 205, to ensure the fixation of the position of the rubber plate 4 after reinforcement, to achieve the auxiliary reinforcement and limitation of the edge part of the rubber plate 4, to avoid the bending deformation of the edge part of the rubber plate 4 during the welding process of the martensitic heat-resistant steel pipeline, to prevent the leakage failure in the argon chamber, and to ensure the welding quality of the martensitic heat-resistant steel pipeline.

[0034] As shown in Figure 1 and Figure 3 In the embodiment, the fastening assembly 1 includes three screw rods 101 installed in annular form on one side wall of the reinforcing plate 3 and cross nuts 102 installed on each screw rod 101.

[0035] As an implementation, when the screw rod 101 passes through the rubber plate 4, locking the cross nut 102 can achieve reliable limiting and fixation between the rubber plate 4 and the reinforcing plate 3, so that the structural strength of the rubber plate 4 is increased under the action of the reinforcing plate 3.

[0036] As shown in Figure 1 and Figure 3 In the embodiment, the screw rod 101 penetrates the rubber plate 4, and the cross nut 102 is composed of a nut and four short shafts installed on the periphery of the nut.

[0037] As an implementation, the cross nut 102 can be conveniently screwed without the aid of external screwing tools, which facilitates quick locking and limiting of the reinforcing plate 3 after installation, reduces the time consumed for installation of the reinforcing plate 3, and ensures efficient performance of the subsequent welding process.

[0038] As shown in Figure 1 and Figure 5 In the embodiment, the connecting rod 6 further has a split handle 5 installed at the end opposite to the rubber plate 4, and a connecting assembly 7 is further installed between the split handle 5 and the connecting rod 6.

[0039] As an implementation form, when the center part of the split handle 5 is opposite the welding part of the martensitic heat-resistant steel pipeline, rotating the split handle 5 can realize synchronous rotation adjustment of the two connecting rods 6, so as to realize synchronous adjustment of the two bracing reinforcement assemblies 2.

[0040] As shown in Figure 5 , in the embodiment, the connecting assembly 7 includes clamping grooves 701 provided on the two split parts of the split handle 5, plugs 702 uniformly arranged in the clamping grooves 701, and plug holes 703 provided on the connecting rods 6 and matched with the plugs 702.

[0041] As an implementation form, inserting the plugs 702 on the split handle 5 into the corresponding plug holes 703 can ensure that the connecting rods 6 are synchronously adjusted with the split handle 5 during use, so as to realize synchronous adjustment of the two bracing reinforcement assemblies 2.

[0042] As shown in Figure 5 , in the embodiment, recesses and plug-in stations are respectively provided on the two split parts of the split handle 5, and the two split parts of the split handle 5 are fixed in a plug-in manner.

[0043] As an implementation form, the two split parts of the split handle 5 can be conveniently disassembled, so as to conveniently pass the rubber plate 4 when the connecting rods 6 are used.

[0044] As shown in Figure 1 , Figure 2 , and Figure 4 , in the embodiment, the screw head 204 penetrates the screw sleeve 205 and is threadedly connected with the screw sleeve 205, and the connecting rod 202 is hinged with the supporting rod 203 and the screw sleeve 205.

[0045] As an implementation form, the connecting rod 202 can push the supporting rod 203 to rotate around the reinforcing plate 3 under the action of the screw sleeve 205.

[0046] As shown in Figure 1 , and Figure 2 , in the embodiment, one end of the supporting rod 203 is hinged with the reinforcing plate 3, the other end of the supporting rod 203 is bonded with the bracing pad 201, the bracing pad 201 is made of rubber, and the edge of one rubber plate 4 is also penetrated by the inflation pipe 8.

[0047] As an implementation form, the supporting rod 203 can realize jacking of the bracing pad 201 after rotation, so as to contact the inner wall of the martensitic heat-resistant steel pipeline to be welded by means of the bracing pad 201, and the inflation pipe 8 can be used to fill argon into the argon chamber after the argon chamber is formed.

[0048] The specific implementation process of the embodiment is as follows: when in use, first, the connecting rods 6 and the screw rod 101 are inserted through the corresponding rubber plates 4, and then the rubber plates 4 and the reinforcing plates 3 are locked and fixed by means of the cross nuts 102, then the split handle 5 is used to connect the end portions of the two connecting rods 6, then the split handle 5 is adjusted to be opposite to the welding position of the martensitic heat-resistant steel pipeline in the middle portion, and the split handle 5 is rotated, after the split handle 5 is rotated, the split handle 5 drives the screw head 204 to rotate through the connecting rod 6, after the screw head 204 is rotated, the screw sleeve 205 moves along the screw head 204 in the axial direction under the action of the threaded transmission, while the screw sleeve 205 is moving, the support rod 203 is lifted up by means of the connecting rod 202, so that the supporting pad 201 is abutted on the inner wall of the martensitic heat-resistant steel pipeline, the auxiliary reinforcing and limiting of the edge portion of the rubber plate 4 is realized, the bending deformation of the edge portion of the rubber plate 4 in the welding process of the martensitic heat-resistant steel pipeline is avoided, the gas leakage in the argon chamber is prevented, the welding quality of the martensitic heat-resistant steel pipeline is guaranteed.

[0049] The above description of disclosed embodiments enables those skilled in the art to carry out or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for argon shielding of a welded joint of a martensitic heat-resistant steel pipe, characterised in that it comprises: The utility model provides a rubber plate (4) is provided with two, and the middle part of each rubber plate (4) is penetrated by a connecting rod (6), one end of the connecting rod (6) is provided with a reinforcing plate (3), and the connecting rod (6) is also provided with a tensioning and reinforcing assembly (2) at the reinforcing plate (3), and the reinforcing plate (3) is provided with a fastening assembly (1) on the side facing the rubber plate (4), wherein the tensioning and reinforcing assembly (2) comprises a screw head (204) formed at the end of the connecting rod (6), a screw sleeve (205) installed on the screw head (204), a connecting rod (202) installed in the annular outer wall of the screw sleeve (205), a supporting rod (203) installed at the end of each connecting rod (202) away from the screw sleeve (205), and a tensioning pad (201) installed at the end of the supporting rod (203) away from the reinforcing plate (3).

2. The martensitic heat-resistant steel pipe welding argon-filling protection device according to claim 1, characterized in that: The fastening assembly (1) comprises three screw rods (101) installed in the annular side wall of the reinforcing plate (3) and a cross nut (102) installed on each screw rod (101).

3. The martensitic heat-resistant steel pipe welding argon-filling protection device according to claim 2, characterized in that: The screw rod (101) penetrates the rubber plate (4), and the cross nut (102) is composed of a nut and four short shafts installed on the periphery of the nut.

4. The martensitic heat-resistant steel pipe welding argon-filling protection device according to claim 1, characterized in that: The end of the connecting rod (6) away from the rubber plate (4) is also provided with a split handle (5), and a connecting assembly (7) is installed between the split handle (5) and the connecting rod (6).

5. The martensitic heat-resistant steel pipe welding argon-filling protection device according to claim 4, characterized in that: The connecting assembly (7) comprises a clamping groove (701) formed in the two split parts of the split handle (5), a plug (702) uniformly arranged in the clamping groove (701), and a plug hole (703) formed in the connecting rod (6) and matched with the plug (702).

6. The martensitic heat-resistant steel pipe welding argon-filling protection device according to claim 5, characterized in that: The two split parts of the split handle (5) are respectively provided with a recess and a plug-in station, and the two split parts of the split handle (5) are fixed in a plug-in manner.

7. The martensitic heat-resistant steel pipe welding argon-filling protection device according to claim 1, characterized in that: The screw head (204) penetrates the screw sleeve (205) and is threadedly connected with the screw sleeve (205), and the connecting rod (202) is hingedly connected with the supporting rod (203) and the screw sleeve (205).

8. The martensitic heat-resistant steel pipe welding argon-filling protection device according to claim 1, characterized in that: One end of the supporting rod (203) is hingedly connected with the reinforcing plate (3), and the other end of the supporting rod (203) is adhesively connected with the tensioning pad (201), and the tensioning pad (201) is made of rubber, and one edge of the rubber plate (4) is also penetrated by an inflation tube (8).

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