CN210254767U - Large-caliber stainless steel local inflation device - Google Patents
Large-caliber stainless steel local inflation device Download PDFInfo
- Publication number
- CN210254767U CN210254767U CN201920084133.XU CN201920084133U CN210254767U CN 210254767 U CN210254767 U CN 210254767U CN 201920084133 U CN201920084133 U CN 201920084133U CN 210254767 U CN210254767 U CN 210254767U
- Authority
- CN
- China
- Prior art keywords
- blocking plate
- stainless steel
- inflation
- pipe
- hose
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Pipe Accessories (AREA)
Abstract
The utility model discloses a large-caliber stainless steel local inflating device, aiming at providing an inflating device which has simple and reliable structure and can efficiently inflate a large-caliber stainless steel clean pipeline, and the technical proposal is that the inflating device comprises an inflating tube, a first blocking plate, a second blocking plate, a hose, a short tube and a plug; the first blocking plate and the second blocking plate are circular and are fixedly connected to the inflation pipe in parallel, the diameters of the first blocking plate and the second blocking plate are larger than that of the stainless steel pipe, and a plurality of small holes are formed in the section of the inflation pipe between the first blocking plate and the second blocking plate; the hose is connected to the first plugging plate, the hose is communicated with the space between the first plugging plate and the second plugging plate, the short pipe is connected to the tail end of the hose, the short pipe is plugged by the plug, and the plug is provided with an air vent. Local inflation is realized through the modified device, and the inflation can reach the standard only in about 10 minutes.
Description
Technical Field
The utility model belongs to the stainless steel welding field especially relates to a local aerating device of heavy-calibre stainless steel.
Background
At present, Chinese patent with publication number CN107355544A discloses an inflatable sealing device for welding stainless steel pipelines, which comprises a pipe body, wherein an inflatable sealing mechanism is arranged at the end part of the pipe body; the inflation sealing mechanism comprises a seat body and an annular inflation sealing pipe; the annular inflatable sealing pipe is sleeved on the seat body; the tube body is provided with an inflation hole; a first inflation tube and a second inflation tube are arranged inside the tube body; the first inflation tube penetrates through the tube body and is in sealed connection with the annular inflation sealing tube; the second inflation tube is connected with the inflation hole in a sealing way.
In the welding of the clean stainless steel pipe, in order to effectively control the oxidation of the inner wall of the pipe, nitrogen or argon is filled in the pipe for protection during welding so as to prevent the oxidation and discoloration of a welding opening on the inner wall of the pipeline, the whole section of the pipeline is electrically welded and connected by a common method during the whole inflation of the pipeline, all adhesive tapes are sealed, a short pipe is arranged at the tail end of the pipeline, and the inflation protection effect of the short pipe is observed. After the pipeline is inflated for a period of time, arc striking welding is carried out on the outer wall of the test welding pipe, the oxidation condition of the inner wall is observed through the transparent end seal, when the color of the inner wall keeps silvery white, the whole pipeline is qualified in inflation, and the pipeline has formal welding conditions. The method has the advantages that the inflation effect can be judged in advance, the protection effect is reliable, and therefore, the inflation mode is adopted in the welding of the large-caliber stainless steel pipe with higher cleanliness requirement.
The disadvantages of this method are manifested in large-caliber stainless steel, because the gas consumption of the protective gas is astonishing and the cost is very high; secondly, when the pipeline is long, a long time is needed from the beginning of inflation to the target, and the time is often more than 24 hours or even longer. During this time, the welder can only wait, and therefore the efficiency is also low.
The traditional local inflation protection method is easy to fail and low in reliability because the effect cannot be judged in advance, and cannot meet the requirements of the clean industry.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a heavy-calibre stainless steel local aerating device. The large-caliber stainless steel air inflation device has the advantages of simple and reliable structure and capability of efficiently inflating a large-caliber stainless steel clean pipeline.
The purpose of the utility model can be realized through the following technical scheme:
a large-caliber stainless steel local inflation device comprises an inflation device, wherein the inflation device comprises an inflation tube, a first blocking plate, a second blocking plate, a hose, a short tube and a plug; the first blocking plate and the second blocking plate are circular and are fixedly connected to the inflation pipe in parallel, the diameters of the first blocking plate and the second blocking plate are larger than that of the stainless steel pipe, and a plurality of small holes are formed in the section of the inflation pipe between the first blocking plate and the second blocking plate;
the hose is connected to the first plugging plate, the hose is communicated with the space between the first plugging plate and the second plugging plate, the short pipe is connected to the tail end of the hose, the short pipe is plugged by the plug, and the plug is provided with an air vent.
Preferably, the plug is a plastic transparent plug.
Preferably, rubber sheets are arranged on the edges of the first blocking plate and the second blocking plate. Preferably, the end of the inflation tube is connected with an inflation device. Preferably, the first blocking plate and the second blocking plate are welded on the gas filling pipe.
Preferably, the small holes are uniformly distributed on the circumference of the inflation tube.
Preferably, the gas filling pipe is made of stainless steel pipe material.
The utility model has the advantages that:
1. local inflation is realized through the modified device, the standard can be reached only by about 10 minutes, and a welder can start welding, so that long-time waiting is avoided, and the efficiency is greatly improved;
2. the inflation time is shortened, the consumption of protective gas is greatly saved, and the cost is saved;
the inflation effect can be prefabricated before formal welding, so that the same reliability of the integral inflation method is achieved.
Drawings
Fig. 1 is a schematic view of the overall connection structure during welding.
In the figure, the position of the upper end of the main shaft,
1. an inflator;
11. an inflation tube; 111. a small hole; 12. a first closure plate; 13. a second closure plate; 14. a hose; 15. A short pipe; 16. a plug; 161. air bleeding holes; 17. rubber sheets;
2. a stainless steel tube; 3. an inflation device; 4. and (5) beautifying the grain paper.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1: a large-caliber stainless steel local inflation device 1 is shown in figure 1 and comprises an inflation device 1, wherein the inflation device 1 comprises an inflation tube 11, a first blocking plate 12, a second blocking plate 13, a hose 14, a short tube 15 and a plug 16.
The hose 14 is connected to the first blocking plate 12, the hose 14 is communicated with a space between the first blocking plate 12 and the second blocking plate 13, the short pipe 15 is connected to the tail end of the hose 14, the short pipe 15 is blocked by the plug 16, and the plug 16 is provided with an air vent 161.
Preferably, the plug 16 is a plastic transparent plug 16.
Preferably, the edges of the first blocking plate 12 and the second blocking plate 13 are provided with rubber sheets 17.
Preferably, the end of the inflation tube 11 is connected with the inflation device 3.
Preferably, the first closure plate 12 and the second closure plate 13 are welded to the gas tube 11.
Preferably, the small holes 111 are evenly distributed around the circumference of the gas-filled tube 11.
Preferably, the gas filling pipe 11 is made of stainless steel pipe 2 material.
As shown in figure 1, two sections of stainless steel pipes 2 to be welded are placed in a butt joint and are plugged into an inflator 1, and the inflator 1 is formed by welding a first plugging plate 12 and a second plugging plate 13 on a stainless steel inflation pipe 11.
The diameter ratio of first closure plate 12 and second closure plate 13 is slightly bigger than the internal diameter of stainless steel pipe 2, and the edge has rubber 17 to seal with stainless steel pipe 2, fills in stainless steel pipe 2 back, and first closure plate 12 and second closure plate 13 are located the both sides of waiting to weld the seam respectively.
The wall of the gas filling pipe 11 between the first blocking plate 12 and the second blocking plate 13 is provided with a small hole 111 for gas to escape. After the gap of the welding line confirms that the inflating device 1 is installed in place, the welding line is blocked by the masking paper 4, so that a closed inflating space is formed around the welding line.
A hose 14 is arranged on the first blocking plate 12 through an opening, the tail end of the hose 14 is connected with a short pipe 15, and the tail end of the short pipe 15 is provided with a transparent plastic blocking head 16 with a small hole 111.
Before welding, protective gas (nitrogen or argon) with the purity of 99.999 is filled into a cavity formed by the first blocking plate 12 and the second blocking plate 13 facing the two sides of the weld crater of the gas-filled tube 11 through the gas-filled device 3, the protective gas flows out from the small hole 111 while the protective gas is filled, the gas is guided into the short tube 15 through the hose 14 and is finally discharged through the small hole on the transparent plastic plug 16, and the complete replacement of the air in the tube at the weld crater is realized.
And after the short pipe 15 is inflated for several minutes, arc striking and welding are carried out on the outer wall of the short pipe 15, the oxidation condition of the inner wall of the short pipe 15 is observed through the transparent plug 16, when the color of the inner wall keeps silver white, the whole section of pipeline is qualified in inflation, the pipeline has formal welding conditions, and then the masking paper 4 is torn off a small amount to start welding.
And (4) after the welding seam is finished, keeping inflation, fully cooling the welding opening, stopping inflation, drawing out the inflation device 1, and then performing local inflation and welding on the next welding seam.
It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, 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.
Finally, it should be noted that: the above embodiments are only used for illustrating but not limiting the technical solutions of the present invention, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention, and it is intended that the appended claims cover such modifications and equivalents as fall within the true spirit and scope of the invention.
Claims (7)
1. A large-diameter stainless steel local inflation device is characterized in that: the device comprises an inflating device (1), wherein the inflating device (1) comprises an inflating pipe (11), a first blocking plate (12), a second blocking plate (13), a hose (14), a short pipe (15) and a plug (16);
the first blocking plate (12) and the second blocking plate (13) are circular and are fixedly connected to the gas filling pipe (11) in parallel, the diameters of the first blocking plate (12) and the second blocking plate (13) are larger than that of the stainless steel pipe (2), and a plurality of small holes (111) are formed in the section of the gas filling pipe (11) between the first blocking plate (12) and the second blocking plate (13);
the hose (14) is connected to the first blocking plate (12), the hose (14) is communicated with a space between the first blocking plate (12) and the second blocking plate (13), the short pipe (15) is connected to the tail end of the hose (14), the short pipe (15) is blocked by the plug (16), and the plug (16) is provided with an air vent (161).
2. The large-caliber stainless steel local inflation device according to claim 1, wherein: the plug (16) is a plastic transparent plug (16).
3. The large-caliber stainless steel local inflation device according to claim 2, wherein: and rubber sheets (17) are arranged on the edges of the first blocking plate (12) and the second blocking plate (13).
4. The large-caliber stainless steel local inflation device according to claim 3, wherein: the end part of the inflation tube (11) is connected with inflation equipment (3).
5. The large-caliber stainless steel local inflation device according to claim 4, wherein: the first blocking plate (12) and the second blocking plate (13) are welded on the inflation tube (11).
6. The large-caliber stainless steel local inflation device according to claim 5, wherein: the small holes (111) are uniformly distributed on the circumference of the inflation tube (11).
7. The large-caliber stainless steel local inflation device according to claim 6, wherein: the gas-filled tube (11) is made of a stainless steel tube (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920084133.XU CN210254767U (en) | 2019-01-17 | 2019-01-17 | Large-caliber stainless steel local inflation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920084133.XU CN210254767U (en) | 2019-01-17 | 2019-01-17 | Large-caliber stainless steel local inflation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210254767U true CN210254767U (en) | 2020-04-07 |
Family
ID=70011045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920084133.XU Active CN210254767U (en) | 2019-01-17 | 2019-01-17 | Large-caliber stainless steel local inflation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210254767U (en) |
-
2019
- 2019-01-17 CN CN201920084133.XU patent/CN210254767U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201815806U (en) | Local argon gas filling device in large- and medium-sized pipelines | |
| CN202861606U (en) | Inflatable plugging device in pipe used for stainless steel pipeline argon arc welding | |
| CN105252120B (en) | A kind of stainless steel cylinder liner circular-seam welding method | |
| CN106141517A (en) | Argon device is rushed in a kind of pipeline welding | |
| CN210254767U (en) | Large-caliber stainless steel local inflation device | |
| CN109693059A (en) | A kind of pipeline welding back side inflatable protective device | |
| CN109807516A (en) | A kind of continuous welded pipe line back protection device of multistage | |
| CN211135868U (en) | Pipeline welding back protective gas inflation device and equipment | |
| CN206047404U (en) | Argon device is rushed in a kind of pipeline welding | |
| CN104708186A (en) | Gas storage device for pipeline welding and pipeline welding method | |
| CN216008446U (en) | Orifice sealing device for geological drilling equipment | |
| CN107297562B (en) | Welding bin of vertical assembly welding equipment | |
| CN212350979U (en) | Welding protection device for thin-walled tube | |
| CN201275661Y (en) | In-tube inflating and packing apparatus | |
| CN108971717A (en) | A kind of the electric arc air bag auxiliary steady experimental device and its application method of wet process welding | |
| CN101224521A (en) | Inner sealing device | |
| CN210548767U (en) | Special pipe welding back argon filling protection device | |
| CN214444020U (en) | Stainless steel pipeline welding argon filling device | |
| CN212599580U (en) | Stainless steel pipe welding back protection inflation tool | |
| CN111230270B (en) | Pipe test piece 2G circumferential weld argon arc welds inside shielding gas device | |
| CN204430539U (en) | A kind of caisson for pipeline welding | |
| CN215698730U (en) | Novel pipe welding argon gas back protection device | |
| CN115837506A (en) | Stainless steel branch pipe welding argon filling device and using method | |
| CN111331232A (en) | Back inert gas protection device for marine stainless steel pipe section butt welding | |
| CN110043198B (en) | Oil gas pipeline trompil nipple joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ping Fuming Inventor after: Wang Jiansong Inventor after: Luo Zhaoqing Inventor before: Ping Fuming Inventor before: Wang Jiansong Inventor before: Luo Zhaoqing |
|
| CB03 | Change of inventor or designer information | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 214000 800-2101, yinxiu Road, Wuxi City, Jiangsu Province Patentee after: Baicheng System Technology Co.,Ltd. Address before: 214000 800-2101, yinxiu Road, Wuxi City, Jiangsu Province Patentee before: BOTH ENGINEERING Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |