CN212761677U

CN212761677U - Plate butt welding back gas protection device

Info

Publication number: CN212761677U
Application number: CN202021327237.8U
Authority: CN
Inventors: 泮延镇
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2021-03-23
Anticipated expiration: 2030-07-08

Abstract

The utility model relates to a plate butt welding back gas protection device, including the casing that is used for placing the plate body, protective gas is leading-in by the intake pipe, be formed with the confined air feed space that is used for holding protective gas in the casing, housing face is provided with recessed recess, the recess accept in the air feed space, the bottom of recess with the air feed space is linked together. The utility model discloses a set up the casing, be formed with the air feed space in the casing, housing face is provided with recessed recess, when welding the plate body (the material is the stainless steel, nickel base material, P91, P92, P22's welding), the plate body can be placed on the casing, and the welding department is located the recess top, the plane of recess has the aperture of about 90 diameters one millimeter of three rows, protective gas in the air feed space is spilled over by the aperture on recess surface, with the protection welding seam back, avoid welding seam high temperature and air contact oxidation. In addition, the groove is sealed by the shell and the plate body, the sealing performance is better, the leakage amount of the protective gas is less, the welding line on the back is well protected, the welding quality is improved, and therefore the using amount of the protective gas can be effectively saved.

Description

Plate butt welding back gas protection device

Technical Field

The utility model relates to a plate butt welding back gas protection device.

Background

When the plate body and the plate body are butt-welded, if the back surface can not be protected by gas or the gas protection is insufficient, the back surface is poor in forming, and welding seam metal is oxidized to cause slag burning. The existing gas protection device is generally simple and easy and is composed of a whole channel steel, the plate body is arranged on the channel steel in a lap mode before the plate body is welded, the welding seam is located in the groove of the channel steel, then the two ends of the channel steel are plugged by heat preservation cotton, the groove is in a closed state, and during welding, the closed space in the groove is inflated to protect the welding seam. However, the existing gas protection device has poor sealing performance, insufficient inflation protection during welding and overlarge gas consumption.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a plate body butt welding back gas protection device that leakproofness is good.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a plate body butt welding back gas protection device, is including the casing that is used for placing the plate body, be formed with the confined air feed space that is used for holding protective gas in the casing, the casing surface is provided with recessed recess, the recess accept in the air feed space, the bottom of recess with the air feed space is linked together.

Further, the casing includes roof, bottom plate and the curb plate of mutual concatenation, the air feed space by the roof the bottom plate with the curb plate encloses to close and forms.

Furthermore, the number of the top plates is two, a gap is reserved between the top plates, and the groove is formed in the gap.

Furthermore, the shell further comprises two opposite groove side plates and a groove bottom plate fixed between the two opposite groove side plates, and the groove side plates are fixed on the top plate.

Furthermore, two ends of the groove side plate are respectively abutted against the side plates.

Furthermore, a plurality of overflow holes communicated with the air supply space are formed in the end face of the groove bottom plate.

Further, a reinforcing plate for supporting the housing is arranged in the housing.

Furthermore, a connecting pipe penetrates through the side plate, one end of the connecting pipe is connected to the outside, and the other end of the connecting pipe is located in the air supply space.

Furthermore, at least one layer of filter screen is laid on the bottom surface of the groove.

The beneficial effects of the utility model reside in that: the utility model discloses a set up the casing, be formed with the air feed space in the casing, housing face is provided with recessed recess, and when welding the plate body, the plate body can be placed on the casing, and the welding department is located the recess top, and the cover gas in the air feed space gets into in the recess by the recess bottom to the protection welding seam, in addition, the recess is realized sealing by casing and plate body, and the leakproofness is better, and the cover gas leakage volume is less, and cover gas's use amount can be effectively practiced thrift.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.

Drawings

Fig. 1 is a schematic structural diagram of the gas protection device of the present invention.

Fig. 2 is an exploded view of the gas-protecting apparatus of fig. 1.

FIG. 3 is a schematic cross-sectional view of the gas-protecting apparatus of FIG. 1.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 3, the gas protection device for the back surface of plate butt welding according to the preferred embodiment of the present invention includes a casing 100, a closed gas supply space 101 is formed in the casing 100, a concave groove 102 is formed on the surface of the casing 100, the groove 102 is accommodated in the gas supply space 101, the bottom of the groove 102 is communicated with the gas supply space 101, a plate (not shown) is erected on the casing 100, and the two positions to be welded are located above the groove 102, during welding, a shielding gas enters the groove 102 from the gas supply space 101, so as to protect the weld joint.

The casing 100 includes a top plate 1, a bottom plate 2 and side plates 3 which are spliced with each other, and the air supply space 101 is enclosed by the top plate 1, the bottom plate 2 and the side plates 3. In the present embodiment, the length, width and height of the housing 100 are 300 × 50mm, and the length, width and height of the groove 102 are 300 × 40 × 20 mm. Wherein, the number of the top plates 1 is two, a gap is reserved between the top plates 1 and the top plates 1, and the groove 102 is arranged at the gap. Specifically, casing 100 still includes the recess curb plate 4 of setting perpendicularly in roof 1 bottom, and recess curb plate 4 quantity is two and sets up on two roof 1 respectively in opposition, is provided with recess bottom plate 5 between the recess curb plate 4, and recess 102 is enclosed by recess curb plate 4 and recess bottom plate 5 and closes and form. The two ends of the groove side plate 4 are respectively abutted against the two opposite side plates 3, so that the openings at the two ends of the groove 102 can be sealed, and when the plate body is overlapped on the top plate 1, the groove 102 forms a closed space to avoid the leakage of the protective gas. The groove bottom plate 5 is provided with a plurality of overflow holes 51, and the protective gas can enter the groove 102 along the overflow holes 51. As a preferred embodiment, for the convenience of assembly, the groove side plate 4 and the groove bottom plate 5 may be integrally formed by bending, and the present invention is not limited herein.

Preferably, in order to improve the strength of the casing 100, the casing 100 is further provided with two reinforcing plates 6, in this embodiment, the two reinforcing plates 6 are respectively located at two sides of the groove 102, the upper end and the lower end of the reinforcing plates 6 are respectively abutted against the top plate 1 and the bottom plate 2, and a certain gap for flowing the shielding gas is left between the front end and the rear end and the side plate 3. Preferably, at least one layer of screen (not shown) is laid on the bottom surface of the recess 102 in order to make the flow of the shielding gas into the recess 102 more uniform.

In addition, a mounting hole 31 is formed in one of the side plates 3, and the gas protecting apparatus further includes a connecting pipe 7 inserted into the mounting hole 31, the connecting pipe 7 being externally connected to a gas supplying device (not shown).

The utility model discloses gas protection device use as follows: firstly, two plate bodies to be welded are placed on the top plate 1, the welding position of the plate bodies is located above the groove 102, and the upper part of the groove 102 can be sealed by the plate bodies; then, the gas supply device is opened, so that the protective gas enters the groove 102 through the connecting pipe 7 and the gas supply space 101, and welding personnel can weld the two plate bodies while ventilating. In addition, because the two sides of the groove 102 are sealed by the side plates 3, and the upper part of the groove 102 is sealed by the plate body, the protective gas is not easy to leak, the using amount of the protective gas can be effectively saved, and the cost of a company is saved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a plate body butt welding back gas protection device which characterized in that, is including the casing that is used for placing the plate body, be formed with the confined air feed space that is used for holding protective gas in the casing, the casing surface is provided with recessed recess, the recess accept in the air feed space, the bottom of recess with the air feed space is linked together.

2. The gas protection device for the butt welding back surface of the plate body according to claim 1, wherein the housing includes a top plate, a bottom plate and side plates which are spliced with each other, and the gas supply space is enclosed by the top plate, the bottom plate and the side plates.

3. The gas shield apparatus for the back surface of a plate body in butt welding according to claim 2, wherein the number of the top plates is two, a gap is left between the top plates, and the groove is provided at the gap.

4. The plate body butt-welding back gas protection device according to claim 3, wherein the shell further comprises two opposite groove side plates and a groove bottom plate fixed between the groove side plates, and the groove side plates are fixed on the top plate.

5. The plate body butt welding back gas protection device according to claim 4, wherein two ends of the groove side plate are respectively abutted against the side plate.

6. The plate body butt welding back surface gas protection device according to claim 4, wherein a plurality of overflow holes communicated with the gas supply space are formed in the end surface of the groove bottom plate.

7. A plate body butt welding back surface gas protection device according to claim 2, wherein a reinforcing plate supporting the housing is provided in the housing.

8. The gas protection device for the butt welding back surface of a plate body according to claim 2, wherein a connecting pipe is arranged on the side plate in a penetrating manner, one end of the connecting pipe is connected to the outside, and the other end of the connecting pipe is located in the gas supply space.

9. The plate body butt-welded back gas protection device according to claim 1, wherein at least one layer of filter screen is laid on the bottom surface of the groove.