Welding seam back argon protection device

Abstract

The utility model discloses a welding seam back argon protection device which comprises a cross rod and further comprises a gas supply mechanism, the end of the cross rod is provided with the gas supply mechanism inserted into a container, and the gas supply mechanism comprises a clamping cover, a rubber mat, a gas supply pipe, a flow dividing pipe, a screw pipe and a screw rod. A clamping cover inserted into the container is installed at the end of the transverse rod, a rubber pad is bonded to the side, facing the inner wall of the container, of the surface of the clamping cover, argon is input through a gas supply pipe during welding and discharged into the clamping cover through a flow dividing pipe, and the back face of the welding position is protected in the welding process; the clamping cover is attached to the inner wall of the container to form an approximately-closed space, argon leakage is reduced, the welding quality is guaranteed, the position of the clamping cover can be kept unchanged in the rotating process of the container, the structure is simple, cyclic utilization can be achieved, and the weld joint welding preparation work time is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure vessel processing, in particular to an argon protection device for the back of a weld seam. Background Technique

[0002] A pressure vessel refers to a closed device that contains gas or liquid and bears a certain pressure. In the production process of pressure vessels, tungsten inert gas arc welding is required for welding many connecting parts. During the welding process, in order to ensure the forming quality of the weld seam, argon protection is required on the back of the weld seam to ensure the weld quality.

[0003] The following drawbacks exist in the existing tungsten inert gas arc welding operation of pressure vessels: In the existing tungsten inert gas arc welding operation of pressure vessels, a simple sealing cavity structure is generally made of a gas pipe or tape, so as to input argon during the welding process to achieve the protection purpose. This method is too simple, the protection effect is poor, and it cannot be reused, which is time-consuming. Therefore, we propose an argon protection device for the back of a weld seam. Content of the Utility Model

[0004] The main purpose of the utility model is to provide an argon protection device for the back of a weld seam. Through the gas supply mechanism arranged at one end of the cross bar, the structure is simple, the argon utilization rate can be improved, air leakage can be reduced, the welding quality can be guaranteed, and it can be recycled, which can effectively solve the problems in the background technique.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] An argon protection device for the back of a weld seam includes a cross bar and a gas supply mechanism. The gas supply mechanism is arranged at the end of the cross bar and inserted into the container. The gas supply mechanism includes a clamping cover, a rubber pad, a gas supply pipe, a shunt pipe, a screw pipe and a screw rod. The clamping cover inserted into the container is installed at the end of the cross bar, and a rubber pad is bonded to the side of the clamping cover surface facing the inner wall of the container. One end of the clamping cover is installed with a gas supply pipe connected to an external argon supply device, and the end of the gas supply pipe is installed with a shunt pipe extending into the clamping cover. The screw pipe is screwed on the top of the screw rod, and the end of the screw rod is connected to the bottom of the clamping cover.

[0007] Further, it further includes a support mechanism. The support mechanism is arranged at the bottom of the cross bar. The support mechanism includes a base, a vertical rod, a support rod and a sleeve. The top of the base is fixedly connected with the vertical rod. The top end of the vertical rod is inserted with the support rod and the top of the support rod is provided with a sleeve. The cross bar horizontally penetrates through the inside of the sleeve. The support mechanism plays a supporting role for the cross bar and the clamping cover. After the pressure vessel is clamped and fixed by an external clamping component, the base is adjusted to one side of the opening end of the pressure vessel. The adjusting bolt is loosened, and the support rod can be vertically pulled to adjust the vertical height position of the clamping cover. The cross bar can be pulled along the sleeve to adjust the depth of the clamping cover inserted into the container. After reaching the appropriate position, the adjusting bolt is tightened to fix it. It is convenient to use and flexible to adjust, meeting the welding requirements of containers of different specifications.

[0008] Further, through holes for discharging argon are formed on the surface of the shunt pipe. A filter plate is fixedly connected to one side of the inside of the clamping cover close to the inner wall of the container. The argon entering the inside of the shunt pipe is discharged through the through holes and is shunted by the filter plate and discharged to the welding position on the inner wall of the container.

[0009] Further, casters are installed at one end of the surface of the screw tube far away from the screw; the caster structure abuts against the inner wall of the container, so that the container can keep the position of the clamping cover unchanged when rotating.

[0010] Further, adjusting bolts are installed at the connection between the inside of the vertical rod and the support rod and at the connection between the inside of the sleeve and the cross bar; after loosening the adjusting bolts, the height of the support rod and the horizontal position of the cross bar can be adjusted.

[0011] Compared with the prior art, the utility model has the following beneficial effects: A clamping cover structure is arranged at the end of the cross bar. The two ends of the top of the clamping cover are in an arc shape and are provided with rubber pads, which can better fit the position of the inner wall of the container. Before welding, the container is fixed by an external component. The clamping cover is moved into the container and fits the welding position on the inner wall of the container. At this time, the screw tube is rotated until the casters at its end abut against the inner wall of the container. During the welding operation, argon is input through the air supply pipe and discharged into the clamping cover through the shunt pipe, playing a protective role on the back of the welding position during the welding process. The clamping cover fits with the inner wall of the container to form a nearly airtight space, reducing argon leakage and ensuring the welding quality. During the rotation of the container, the position of the clamping cover can be kept unchanged. The structure is simple and can be recycled, shortening the welding preparation time of the weld seam; the support mechanism plays a supporting role for the cross bar and the clamping cover. After the pressure vessel is clamped and fixed by an external clamping component, the base is adjusted to one side of the opening end of the pressure vessel. The adjusting bolt is loosened, and the support rod can be vertically pulled to adjust the vertical height position of the clamping cover. The cross bar can be pulled along the sleeve to adjust the depth of the clamping cover inserted into the container. After reaching the appropriate position, the adjusting bolt is tightened to fix it. It is convenient to use and flexible to adjust, meeting the welding requirements of containers of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall structure of an argon protection device for the back of a weld seam in the present utility model.

[0013] Figure 2 This is a schematic diagram of the internal structure of the clamping cover of an argon protection device for the back of a weld seam in the present utility model.

[0014] Figure 3 This is a schematic diagram of the support mechanism structure of an argon protection device for the back of a weld seam in the present utility model.

[0015] In the figure: 1, cross bar; 2, gas supply mechanism; 201, clamping cover; 202, rubber pad; 203, gas supply pipe; 204, shunt pipe; 205, through hole; 206, filter plate; 207, screw pipe; 208, screw rod; 209, caster; 3, support mechanism; 301, base; 302, vertical rod; 303, support rod; 304, sleeve; 305, adjusting bolt. Specific embodiments

[0016] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] As Figures 1-3 shown, an argon protection device for the back of a weld seam includes a cross bar 1 and also includes a gas supply mechanism 2. The end of the cross bar 1 is provided with a gas supply mechanism 2 inserted into the container. The gas supply mechanism 2 includes a clamping cover 201, a rubber pad 202, a gas supply pipe 203, a shunt pipe 204, a screw pipe 207 and a screw rod 208. The end of the cross bar 1 is installed with a clamping cover 201 inserted into the container, and a rubber pad 202 is bonded to the side of the surface of the clamping cover 201 facing the inner wall of the container. One end of the clamping cover 201 is installed with a gas supply pipe 203 connected to an external argon supply device, and the end of the gas supply pipe 203 is installed with a shunt pipe 204 extending into the clamping cover 201. The top of the screw pipe 207 is screwed with a screw rod 208, and the end of the screw rod 208 is connected to the bottom of the clamping cover 201.

[0018] Among them, a support mechanism 3 is further included. The support mechanism 3 is arranged at the bottom of the cross bar 1. The support mechanism 3 includes a base 301, a vertical rod 302, a support rod 303 and a sleeve 304. The top of the base 301 is fixedly connected with the vertical rod 302. The top end of the vertical rod 302 is inserted with the support rod 303 and the top of the support rod 303 is provided with the sleeve 304. The cross bar 1 horizontally penetrates through the inside of the sleeve 304. The support mechanism 3 plays a supporting role for the cross bar 1 and the clamping cover 201. After the pressure vessel is clamped and fixed by the external clamping assembly, the base 301 is adjusted to one side of the opening end of the pressure vessel. The adjusting bolt 305 is loosened, and the support rod 303 can be vertically pulled to adjust the vertical height position of the clamping cover 201. The cross bar 1 is pulled along the sleeve 304 to adjust the depth of the clamping cover 201 inserted into the container. After reaching the appropriate position, the adjusting bolt 305 is tightened to fix it. It is convenient to use and flexible to adjust, meeting the welding requirements of containers of different specifications.

[0019] Among them, through holes 205 for discharging argon are formed on the surface of the shunt pipe 204. A filter plate 206 is fixedly connected to the inner side of the clamping cover 201 close to the inner wall of the container. A caster 209 is installed at one end of the screw pipe 207 away from the screw 208. The argon entering the shunt pipe 204 is discharged through the through holes 205 and is shunted by the filter plate 206 and discharged to the welding position on the inner wall of the container. The structure of the caster 209 abuts against the inner wall of the container, so that the position of the clamping cover 201 can be kept stationary when the container rotates.

[0020] Among them, adjusting bolts 305 are installed at the connection between the inside of the vertical rod 302 and the support rod 303 and at the connection between the inside of the sleeve 304 and the cross bar 1. After the adjusting bolt 305 is loosened, the height of the support rod 303 and the horizontal position of the cross bar 1 can be adjusted.

[0021] It should be noted that the present utility model is a kind of argon protection device for the back of the weld. During operation, a clamping cover 201 structure is provided at the end of the cross bar 1. The two ends of the top of the clamping cover 201 are in an arc structure and are provided with rubber pads 202, which can better fit the inner wall position of the container. Before welding, the container is fixed by external components. The clamping cover 201 is moved into the container and fits the welding position on the inner wall of the container. At this time, the screw tube 207 is screwed until the caster 209 at its end abuts against the inner wall of the container. During the welding operation, argon is input through the air supply pipe 203 and discharged into the clamping cover 201 through the shunt pipe 204, playing a protective role on the back of the welding position during the welding process. The clamping cover 201 and the inner wall of the container fit to form a nearly airtight space, reducing argon leakage and ensuring the welding quality. During the rotation of the container, the position of the clamping cover 201 can be kept unchanged. The structure is simple and can be recycled, shortening the preparation time for weld welding; The support mechanism 3 plays a supporting role for the cross bar 1 and the clamping cover 201. After the pressure vessel is clamped and fixed by an external clamping component, the base 301 is adjusted to one side of the opening end of the pressure vessel. The adjusting bolt 305 is loosened, and the support rod 303 can be vertically pulled to adjust the height position of the clamping cover 201 in the vertical direction. The cross bar 1 can be pulled along the sleeve 304 to adjust the depth of the clamping cover 201 inserted into the container. After reaching the appropriate position, the adjusting bolt 305 is tightened and fixed. It is convenient to use and flexible to adjust, meeting the welding requirements of containers of different specifications.

[0022] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A weld back argon protection device, comprising a cross bar (1), characterized in that: The invention also comprises an air supply mechanism (2), wherein the end of the cross bar (1) is provided with an air supply mechanism (2) inserted into the interior of the container, and the air supply mechanism (2) comprises a card cover (201), a rubber pad (202), an air supply pipe (203), a shunt pipe (204), a spiral tube (207) and a screw (208); the end of the cross bar (1) is provided with a card cover (201) inserted into the interior of the container, and the rubber pad (202) is bonded to the surface of the card cover (201) facing the inner wall of the container; one end of the card cover (201) is provided with an air supply pipe (203) connected to an external argon gas supply device, and the end of the air supply pipe (203) is provided with a shunt pipe (204) extending into the interior of the card cover (201); the top of the spiral tube (207) is threadedly connected with a screw (208), and the end of the screw (208) is connected to the bottom of the card cover (201).

2. The weld back argon protection device according to claim 1, characterized in that: The invention also comprises a support mechanism (3), wherein the bottom of the cross bar (1) is provided with the support mechanism (3), and the support mechanism (3) comprises a base (301), a vertical bar (302), a support rod (303) and a sleeve (304); the top of the base (301) is fixedly connected with the vertical bar (302), the top of the vertical bar (302) is plugged with the support rod (303), and the top of the support rod (303) is installed with the sleeve (304), and the cross bar (1) passes through the inside of the sleeve (304) in the horizontal direction.

3. The weld back argon protection device according to claim 1, characterized in that: A through hole (205) for discharging argon gas is provided on the surface of the diverter pipe (204), and a filter plate (206) is fixedly connected to one side of the card cover (201) close to the inner wall of the container.

4. The weld back argon protection device according to claim 1, characterized in that: A caster (209) is installed on one end of the surface of the spiral tube (207) away from the screw rod (208).

5. The weld back argon protection device according to claim 2, characterized in that: Adjustment bolts (305) are installed at the connection between the interior of the vertical rod (302) and the support rod (303) and at the connection between the interior of the sleeve (304) and the crossbar (1).

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