CN217224007U - Saddle pipe joint argon filling protection device - Google Patents

Abstract

The utility model discloses a saddle coupling argon filling protection device relates to protection technical field. Saddle pipe joint argon filling protection device, including filling the argon closure plate, fill the argon closure plate and include the double-end screwed pipe, the argon filling passageway has been seted up on double-end screwed pipe top, double-end screwed pipe top fixedly connected with upper strata closure plate, upper strata closure plate bottom fixedly connected with seal ring, double-end screwed pipe bottom fixedly connected with lower floor's closure plate, the argon outlet has been seted up to double-end screwed pipe both sides. The utility model, through the design of the upper layer blocking plate and the sealing washer, does not need to refill the asbestos fiber cushion layer after the blocking plate is arranged, thus reducing the tedious blocking process; in addition, the upper-layer blocking plate and the lower-layer blocking plate are connected through the double-end threaded rod, the argon filling blocking plate is inserted into the pipe joint, the space between the upper-layer blocking plate and the lower-layer blocking plate can be used as an argon filling cavity, the argon filling blocking plate can be repeatedly used after welding is completed, and the welding work efficiency is improved.

Description

Saddle pipe joint argon filling protection device

Technical Field

The utility model relates to the technical field of protection, specifically be saddle coupling argon filling protection device.

Background

The pipe joint with the diameter more than 108mm on the boiler header requires 100% ultrasonic inspection after welding, the fillet weld of the pipe joint needs full penetration, and the welding process generally adopts argon arc welding for bottoming. For a part of a weld of a special material such as P91, during argon arc welding priming, the back of the weld needs to form an opposite sealed space and be filled with argon to protect the root weld from forming. In addition, the material is preheated to more than 200 ℃ before welding. Traditional argon filling protection work adopts on-spot shutoff with the closure plate to utilize fire-proof materials such as asbestos fibre to joint, the process is comparatively troublesome, and the welding all blocks up once more at every turn, influences work efficiency. Therefore, an argon filling protection device for the saddle pipe joint is developed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a saddle coupling connects argon filling protection device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: saddle pipe joint argon filling protection device, including filling the argon closure plate, fill the argon closure plate and include the double-end screwed pipe, the argon filling passageway has been seted up on double-end screwed pipe top, double-end screwed pipe top fixedly connected with upper strata closure plate, upper strata closure plate bottom fixedly connected with seal ring, double-end screwed pipe bottom fixedly connected with lower floor's closure plate, lower floor's closure plate bottom fixedly connected with wind measuring tape, the argon outlet has been seted up to double-end screwed pipe both sides.

Preferably, a pipe joint is placed at the bottom end of the upper-layer plugging plate, a cylindrical shell section is fixedly connected to the bottom end of the pipe joint, and welding flux is fixedly attached to the joint of the pipe joint and the cylindrical shell section.

Preferably, double-end screwed pipe top fixedly connected with air feed mechanism, air feed mechanism includes sealing connection pipe, sealing connection pipe top fixedly connected with argon filling pipe.

Preferably, one end of the argon filling pipe is fixedly connected with an air valve, and the bottom end of the air valve is fixedly connected with a high-pressure steel cylinder.

Preferably, one side of the air valve is fixedly connected with a barometer, and one end of the barometer is communicated with the interior of the high-pressure steel cylinder.

Compared with the prior art, the beneficial effects of the utility model are that:

according to the saddle pipe joint argon filling protection device, through the design of the upper layer blocking plate and the sealing washer, the argon filling blocking plate is inserted into the pipe joint to realize the sealing operation of the pipe joint, and the asbestos fiber cushion layer is not required to be refilled after the blocking plate is arranged, so that the tedious blocking process is reduced; in addition, the upper-layer blocking plate and the lower-layer blocking plate are connected through the double-end threaded rod, the argon filling blocking plate is inserted into the pipe joint, the space between the upper-layer blocking plate and the lower-layer blocking plate can be used as an argon filling cavity, the argon filling blocking plate can be taken out for repeated use after welding is completed, and the welding work efficiency is improved.

Drawings

Fig. 1 is an isometric view of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

fig. 3 is a partial enlarged view of the present invention.

In the figure: 1. filling argon to block the plate; 101. an upper blocking plate; 102. a sealing gasket; 103. an argon outlet; 104. a wind measuring zone; 105. a lower blocking plate; 106. a double-ended threaded pipe; 107. an argon filling channel; 2. an air supply mechanism; 201. an argon filling pipe; 202. an air valve; 203. a barometer; 204. a high-pressure steel cylinder; 205. sealing the connecting pipe; 3. a shell ring; 4. welding flux; 5. a pipe joint.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

It should be noted that, in the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of the description, and 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.

Further, it will be appreciated that the dimensions of the various elements shown in the figures are not drawn to scale, for ease of description, and that the thickness or width of some layers may be exaggerated relative to other layers, for example.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus, once an item is defined or illustrated in one figure, it will not need to be further discussed or illustrated in detail in the description of the following figure.

As shown in fig. 1-3, the utility model provides a technical solution: saddle coupling connects argon filling protection device, including filling argon closure plate 1, filling argon closure plate 1 includes double-end threaded pipe 106, and argon filling passageway 107 has been seted up on double-end threaded pipe 106 top, and it needs to notice that this argon filling passageway 107 can not run through whole double-end threaded pipe 106, but lets double-end threaded pipe 106 form half hollow structure. The double-ended threaded pipe 106 is provided with a set of two nuts at the top end, and the upper blocking plate 101 is placed between the two nuts. Of the two nuts, the lower nut is used for setting the position of the upper plugging plate 101, and after the upper plugging plate 101 is placed, the upper nut is screwed to fixedly connect the upper plugging plate 101 to the double-end threaded pipe 106. The bottom end of the upper plugging plate 101 is fixedly connected with a sealing washer 102, thereby forming a cavity with certain air tightness below the upper plugging plate 101, the bottom end of the double-threaded pipe 106 is also provided with a set of two nuts for fixedly connecting the lower plugging plate 105, and it is noted that the diameter of the lower plugging plate 105 is smaller than that of the upper plugging plate 101, because the positions of the upper plugging plate 101 and the lower plugging plate 105 are different, the functions are different, and therefore, in the embodiment, the air tightness of the lower plugging plate 105 is not required. The bottom end of the lower blocking plate 105 is fixedly connected with the wind measuring belt 104, in this embodiment, the wind measuring belt 104 needs to be soft and light, and is installed at the edge of the lower blocking plate 105, and can be blown by the air current leaked from the edge of the lower blocking plate 105. At the same time the wind measuring strip 104 also needs to have a certain mass so that it does not fall off debris under the influence of the air flow. Argon outlet 103 has been seted up to double-end screwed pipe 106 both sides, and it should be noted that this argon outlet 103 should design at the minimum of filling argon passageway 107, if argon outlet 103 bottom still is connected with unnecessary passageway, then have the argon amasss and become silted up in this section unnecessary passageway, can not be used for filling argon protection work, causes the waste.

The pipe joint 5 is placed at the bottom end of the upper layer plugging plate 101, the cylindrical section 3 is fixedly connected to the bottom end of the pipe joint 5, and the welding flux 4 is fixedly attached to the joint of the pipe joint 5 and the cylindrical section 3. It should be noted that the diameter of the upper closure plate 101 and the sealing gasket 102 should be larger than the outer diameter of the pipe joint 5, while the diameter of the lower closure plate 105 is smaller than the pipe joint 5. Meanwhile, the lower blocking plate 105 is located below the solder 4, so that an argon protection cavity surrounded by the upper blocking plate 101 and the lower blocking plate 105 completely covers the back of a welding seam on the inner side of the solder 4, and a good protection effect is generated after argon filling.

The top end of the double-end threaded pipe 106 is fixedly connected with an air supply mechanism 2, the air supply mechanism 2 comprises a sealing connecting pipe 205, and the top end of the sealing connecting pipe 205 is fixedly connected with an argon filling pipe 201. One end of the argon filling pipe 201 is fixedly connected with a gas valve 202, the bottom end of the gas valve 202 is fixedly connected with a high-pressure steel cylinder 204, and compressed argon is stored in the high-pressure steel cylinder 204, so that the steel cylinder has higher air pressure and is greater than the external atmospheric pressure. After the gas valve 202 is opened, argon in the bottle diffuses towards the outside of low pressure under self high pressure, and because of the constraint of the steel bottle, the argon can only be filled into the double-end threaded pipe 106 through the argon filling pipe 201, and diffuses into the cavity enclosed by the upper blocking plate 101 and the lower blocking plate 105 through the argon outlet 103, and the original gas in the cavity is expelled through the ventilation gaps around the lower blocking plate 105, so that the argon concentration in the cavity is increased to meet the requirement during welding, and at the moment, the argon concentration in the cavity can be ensured as long as being replenished all the time. One side of the gas valve 202 is fixedly connected with a barometer 203, one end of the barometer 203 is communicated to the inside of the high-pressure steel cylinder 204, and through the barometer 203, a worker can know the use condition of argon in the high-pressure steel cylinder 204 and timely replace the argon.

When the utility model is to be used, the worker first puts the pipe joint 5 and the shell ring 3 together, puts the double-end threaded pipe 106 with the upper and lower closure plates 101 and 105 installed therein into the pipe joint 5, and laps the upper surface of the pipe joint 5 with the upper closure plate 101 to be fixedly placed. Then, the solder 4 is prepared and preheated to more than two hundred ℃, the air valve 202 is opened, argon is injected into the argon filling channel 107 in the box double-end threaded pipe 106 and is released through the argon outlet 103, air between the upper blocking plate and the lower blocking plate is expelled from gaps around the lower blocking plate 105, and the welding operation can be carried out on the solder 4 after about one minute.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. Saddle coupling connects argon filling protection device, including filling argon closure plate (1), its characterized in that: argon filling closure plate (1) includes double-end screwed pipe (106), argon filling passageway (107) have been seted up on double-end screwed pipe (106) top, double-end screwed pipe (106) top fixedly connected with upper strata closure plate (101), upper strata closure plate (101) bottom fixedly connected with seal ring (102), double-end screwed pipe (106) bottom fixedly connected with lower floor closure plate (105), lower floor closure plate (105) bottom fixedly connected with wind measurement area (104), argon outlet (103) have been seted up to double-end screwed pipe (106) both sides.

2. The saddle pipe joint argon-filling protection device according to claim 1, characterized in that: the pipe joint (5) have been placed to upper strata closure plate (101) bottom, pipe joint (5) bottom fixedly connected with shell ring (3), just the junction of pipe joint (5) and shell ring (3) is fixed with solder (4).

3. The saddle pipe joint argon-filling protection device according to claim 1, characterized in that: double-end screwed pipe (106) top fixedly connected with air feed mechanism (2), air feed mechanism (2) are including sealing connection pipe (205), sealing connection pipe (205) top fixedly connected with argon filling pipe (201).

4. The saddle pipe joint argon-filling protection device according to claim 3, characterized in that: one end of the argon filling pipe (201) is fixedly connected with an air valve (202), and the bottom end of the air valve (202) is fixedly connected with a high-pressure steel cylinder (204).

5. The saddle pipe joint argon-filling protection device according to claim 4, characterized in that: one side of the gas valve (202) is fixedly connected with a barometer (203), and one end of the barometer (203) is communicated to the inside of the high-pressure steel cylinder (204).

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