CN207431562U - A kind of pipeline welding protecting device - Google Patents
A kind of pipeline welding protecting device Download PDFInfo
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- CN207431562U CN207431562U CN201721404656.5U CN201721404656U CN207431562U CN 207431562 U CN207431562 U CN 207431562U CN 201721404656 U CN201721404656 U CN 201721404656U CN 207431562 U CN207431562 U CN 207431562U
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- gas tube
- hard gas
- pipeline
- hard
- welded
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Abstract
The utility model discloses a kind of pipeline welding protecting devices, belong to welding technology field.The device includes：Hard gas tube, the gasing tank of at least two asbestos disks, one end closing and one end open.Asbestos disk is sleeved on hard gas tube, and after pipeline to be welded is stretched to, two neighboring asbestos disk forms sealed guard space with tube fit to be welded.The openend of hard gas tube is connected with the gasing tank positioned at pipeline external to be welded.Stomata is provided on the hard gas tube in sealed guard space.Pipeline welding is protected by the pipeline welding protecting device that the utility model embodiment provides, the oxidation corrosion of weld bond can be prevented, improve weldquality, and step is simple, operation is efficient, can improve work efficiency, stability is good, and service life is long.
Description
Technical field
The utility model is related to welding technology field, more particularly to a kind of pipeline welding protecting device.
Background technology
In actual production, welding is to realize a kind of usual way of pipeline docking and repair, carries out the pipeline of metal material
, it is necessary to which the weld bond filling with inert gas that welded pipe line is treated using pipeline welding protecting device is protected during welding, weld bond is prevented
It is aoxidized under the high temperature conditions, influences the weldquality that welding is formed after finishing.It is protected therefore, it is necessary to provide a kind of pipeline welding
Protection unit.
The prior art provides such a pipeline welding protecting device：Including gas tube, exhaust pipe, expansion tube and two
Rubber material air bag.Gas tube is communicated through air bag with the cavity that two air bags and tube wall are formed, and exhaust pipe connects cavity with extraneous
Exhaust is common to, two expansion tubes connect respectively with air bag, air bag are pumped and pressure release.Air bag is expanded by expansion tube
To offseting with inner-walls of duct, inert gas is then filled with by inflated hose, you can realize protection during pipeline welding.
Designer has found that the prior art has at least the following problems：
Air bag is difficult to be resistant to high temperature during welding, it is easy to and it is impaired, and realization sealing is filled and deflated by air bag by expansion tube
And pressure release, complex steps, work efficiency are relatively low.
Utility model content
The utility model embodiment provides a kind of pipeline welding protecting device, can solve above-mentioned technical problem.Specific skill
Art scheme is as follows：
A kind of pipeline welding protecting device is provided, described device includes：At least two asbestos disks, one end closing and one end
Hard gas tube, the gasing tank of opening；
The asbestos disk is sleeved on the hard gas tube, and after pipeline to be welded is stretched to, it is two neighboring described
Asbestos disk forms sealed guard space with the tube fit to be welded；
The openend of the hard gas tube is connected with the gasing tank positioned at the pipeline external to be welded；
Stomata is provided on the hard gas tube in the sealed guard space.
In a kind of possible design, multiple asbestos disks are removably sleeved on the hard gas tube.
In a kind of possible design, multiple stomatas are evenly distributed on vertically on the hard gas tube；
Dismountable blocking piece is provided on the stomata.
In a kind of possible design, the length of the hard gas tube is adjustable.
It is axially disposed on the outer wall of the hard gas tube to have scale in a kind of possible design.
In a kind of possible design, the gasing tank includes：Main body, gas outlet, air outlet pipe；
The gas outlet is arranged on the upper end of the main body；
Described air outlet pipe one end is connected with the gas outlet, and the other end is connected with the hard gas tube.
In a kind of possible design, the air outlet pipe is connected with the hard gas tube by box cupling.
The advantageous effect brought of technical solution that the utility model embodiment provides is：
The pipeline welding protecting device that the utility model embodiment provides fills after only need to asbestos disk being moved to predeterminated position
Welding protection can be realized in inert gas, and the comparison prior art is sealed using airbag aeration, reduces and be filled and deflated by sealing and pressure release
Process, step is simple, and operation is efficient, can improve work efficiency, and asbestos disk is heat-resisting material, is not easy using process because of weldering
High temperature damage when connecing, stability is good, and service life is longer.To sum up, the pipeline provided by the utility model embodiment welds
Protective device protects pipeline welding, can prevent the oxidation corrosion of weld bond, improves weldquality, and step is simple, behaviour
Make efficiently, work efficiency can be improved, stability is good, and service life is long.
Description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the overall schematic for the pipeline welding protecting device that the utility model embodiment provides；
Fig. 2 is the partial cross section view for the pipeline welding protecting device that the utility model embodiment provides.
Reference numeral represents respectively：
1- asbestos disks,
2- hard gas tubes, 201- stomatas,
3- gasing tanks, 301- main bodys, 302- gas outlets, 303- air outlet pipes,
4- box cuplings,
M- pipelines to be welded.
Specific embodiment
Unless otherwise defined, all technical terms used in the utility model embodiment are respectively provided with and those skilled in the art
Normally understood identical meaning.To make the purpose of this utility model, technical solution and advantage clearer, below in conjunction with attached
Figure is described in further detail the utility model embodiment.
The utility model embodiment provides a kind of pipeline welding protecting device, and as shown in Figure 1, which includes：Extremely
Hard gas tube 2, the gasing tank 3 of few two asbestos disks 1, one end closing and one end open.
Asbestos disk 1 is sleeved on hard gas tube 2, and after pipeline M to be welded is stretched to, two neighboring asbestos disk 1 with
Pipeline M to be welded cooperatively forms sealed guard space.
The openend of hard gas tube 2 is connected with the gasing tank 3 outside pipeline M to be welded.
Stomata 201 is provided on the hard gas tube 2 in sealed guard space.
The operation principle of the pipeline welding protecting device provided below the utility model embodiment illustrates：
The pipeline welding protecting device provided using the utility model embodiment can carry out welding protection, carry out pipeline weldering
Before connecing, asbestos disk 1 is stretched in pipeline M to be welded by mobile hard gas tube 2, and weld bond is made to be located at two neighboring asbestos
Between disk 1, weld bond is made to be located in sealed guard space.Since hard gas tube 2 is hard material, so without other
Instrument coordinates, and only need to move hard gas tube 2 can be moved to predeterminated position by asbestos disk 1.
After being moved to predeterminated position, the blind end of hard gas tube 2 is located in pipeline M to be welded, and openend is treated with being located at
Gasing tank 3 outside welded pipe line M connects, and is provided with stomata on the hard gas tube 2 in sealed guard space
201.After opening gasing tank 3, inert gas flows through hard gas tube 2 out of gasing tank 3, and enters sealed guarantor by stomata 201
Protect space in, by the air in sealed guard space by weld bond displacement to the external world after, the inert gas be full of the sealed guarantor
Space is protected, outside air cannot be introduced into guard space, prevent the oxidation corrosion of weld bond in welding process, improve shape after the completion of welding
Into weldquality, realize welding protection.After the completion of welding, asbestos disk 1 and hard gas tube 2 are taken out.
The quantity of asbestos disk 1 can be 2, form the sealed guard space of a corresponding weld bond position, asbestos disk 1
Quantity or multiple, such as 5,6,8 etc., for example, when the quantity of asbestos disk 1 is 6, can be formed most
More 5 sealed guard spaces, minimum 3 sealed guard spaces, judge whether two-by-two according to the distance between weld bond distance
Adjacent asbestos disk 1 is respectively formed sealed guard space.Multiple sealed guard spaces can be formed by multiple asbestos disks 1,
The once movement of pipeline welding protecting device can protect multiple weld bonds, allow multiple weld bonds welding simultaneously into
Row, saves the time, improves work efficiency.
The pipeline welding protecting device that the utility model embodiment provides fills after only need to asbestos disk 1 being moved to predeterminated position
Welding protection can be realized in inert gas, and the comparison prior art is sealed using airbag aeration, reduces and be filled and deflated by sealing and pressure release
Process, step is simple, and operation is efficient, can improve work efficiency, and asbestos disk 1 is heat-resisting material, using process be not easy because
High temperature damage during welding, stability is good, and service life is longer.To sum up, the pipeline provided by the utility model embodiment welds
It connects protective device to protect pipeline welding, can prevent the oxidation corrosion of weld bond, improve weldquality, and step is simple,
Operation is efficient, can improve work efficiency, stability is good, and service life is long.
Each component of the pipeline welding protecting device provided below the utility model embodiment and its effect are given respectively
It illustrates：
As shown in Figures 1 and 2, the shape of asbestos disk 1 is adapted with size with pipeline M to be welded, is treated for coordinating
Welded pipe line M forms sealed guard space.For example, when pipeline M to be welded is pipe, correspondingly, asbestos disk 1 is discoid
Structure, and the outer diameter of asbestos disk 1 is identical with the internal diameter of pipeline M to be welded, can form sealed contact.
In the utility model embodiment, multiple asbestos disks 1 are removably sleeved on hard gas tube 2.It so set, can
With according to the position of weld bond and quantity on pipeline M to be welded, the position of reasonable arrangement asbestos disk 1 and quantity protect pipeline welding
After protection unit stretches into pipeline M to be welded, the sealed guard space of multiple corresponding weld bond positions can be formed, meets different welderings
Requirement under mouth distribution situation, it is applied widely.
For how to realize that asbestos disk 1 is removably sleeved on hard gas tube 2, a kind of example is given below：
External screw thread on the outer wall of hard gas tube 2 is set, the internal thread being adapted is set on the inner wall of asbestos disk 1, then
Asbestos disk 1 can be axially moveable to any position on hard gas tube 2, and in the case of no torsional moment by rotation,
The power axial along hard gas tube 2 can not move asbestos disk 1, when stretching into pipeline M to be welded, the resistance of tube wall and weld
The pressure of inert gas can not move position of the asbestos disk 1 on hard gas tube 2 in journey, realize the removable of asbestos disk 1
On the premise of unloading suit, the position relative harder gas tube 2 of asbestos disk 1 is fixed after being set with.After the completion of welding, stone is rotated
Cotton disk 1 can dismantle asbestos disk 1 from hard gas tube 2.
The effect being threadedly coupled when further, in order to improve suit, as shown in Figure 2, asbestos disk 1 can include：Position
Main body in outer ring, the linkage section positioned at inner ring.The outer diameter of linkage section is identical with the internal diameter of main body, and passes through buckle or key connection
Etc. modes be connected and fix with main body, the interior spiral shell that is adapted with the external screw thread of hard gas tube 2 is set on the inner wall of linkage section
Line.And the material of linkage section can be carbon steel, carbon steel has better mechanical performance compared to asbestos material, improves screw thread
Tightness and stability during connection.So set, both can guarantee asbestos disk 1 whole heat resistance and corrosion resistance, further through
Setting inner ring linkage section improves effect during threaded connection.
Position based on above-mentioned asbestos disk 1 on hard gas tube 2 is adjustable, in order to meet the sealed of different position
The inflation requirement of guard space, following improvement is made in distribution and structure to stomata 201：
Multiple stomatas 201 are evenly distributed on vertically on hard gas tube 2, and are provided on stomata 201 dismountable stifled
Part.
So set, after installation is completed to asbestos disk 1 according to the quantity of weld bond on pipeline M to be welded and position, stretch into
The blocking piece for being used to be formed on the stomata 201 between the asbestos disk 1 of sealed guard space after pipeline M to be welded removes, remaining gas
The blocking piece in hole 201 keeps sealed condition, can realize the gas-filled protective of the sealed guard space to different position and quantity, and
Inert gas resource will not be wasted.
Wherein, multiple stomatas 201 are evenly distributed on vertically on hard gas tube 2, and the position of axial each stomata 201
The place of putting can be uniformly arranged in the circumferential direction multiple stomatas 201, improve the efficiency and the uniformity of inflation.
Blocking piece can be rubber stopper, and closure is realized in insertion stomata 201, and extracting blocking piece can make stomata 201 unimpeded.
In the utility model embodiment, hard gas tube 2 plays fixed asbestos disk 1 and asbestos disk 1 is moved to predeterminated position,
The effect of inert gas is conveyed simultaneously.
In order to adapt to different weld bond positions, the length of hard gas tube 2 is adjustable.So set, in weld bond apart to be welded
When the nozzle of take over road M is nearer, shorter hard gas tube 2 is selected, reduces the occupied space of pipeline welding protecting device, is shortened
Inflationtime.Nozzle of the weld bond apart from pipeline M to be welded farther out when, select longer hard gas tube 2, expand pipeline welding
The scope of application of protective device.
Length for how to realize hard gas tube 2 is adjustable, and a kind of example is given below：
The quantity of hard gas tube 2 can be multiple, and more hard gas tubes 2 are sequentially connected with, by controlling the hard of connection
The quantity of matter gas tube 2 can realize that the length of hard gas tube 2 is adjustable.
Wherein, more hard gas tubes 2 can be threadedly coupled, and be easily installed and dismantled, and tightness is good.
Hard gas tube 2 can be carbon steel tubing, further, antioxidation coating is coated on carbon steel tubing surface, extended hard
The service life of matter gas tube 2.Wherein, antioxidation coating can be containing zinc layers.
Efficiency in pipeline M to be welded is stretched into order to improve asbestos disk 1, it is axially disposed on hard gas tube 2 to have scale.
So set, by observing the scale on hard gas tube 2, hard gas tube is can determine whether without other measuring instruments
2 length stretched into, and then determine the position of asbestos disk 1, can improve the rate that asbestos disk 1 extend into weld bond both sides, during saving
Between.
The utility model embodiment uses source of the gas of the gasing tank 3 as inert gas, and as shown in Figure 1, gasing tank 3 wraps
It includes：Main body 301, gas outlet 302, air outlet pipe 303；
Gas outlet 302 is arranged on the upper end of main body 301；
303 one end of air outlet pipe is connected with gas outlet 302, and the other end is connected with hard gas tube 2.
So set, the connection by air outlet pipe 303 and hard gas tube 2, you can provided surely for sealed guard space
Fixed noble gas source.
Further, for the ease of the rate and pressure of control input gas, be additionally provided on gas outlet 302 switch valve and
Pressure reducing valve.The rate of gas output is controlled by switch valve, pressure size during inert gas output is controlled by pressure reducing valve, it can
To determine different inert gas output speeds and output pressure according to different welding periods, when starting inflation, control output
Rate and output pressure are larger, and inert gas is enable to be rapidly filled with sealed guard space, after inflating a period of time, reduce defeated
Go out rate and output pressure, make the inert gas more slowly flowing in hard gas tube 2, realizing the premise of welding protection
Under, save inert gas dosage.
Switch valve and pressure reducing valve are common for this field, for example, the wooden Self controlling valve Co., Ltd production in Changzhou nine is simultaneously
The switch valve that the D71X-16 handles butterfly valve of sale can be used as the utility model embodiment, forever limited public affairs of space valve manufacture
Take charge of the pressure reducing valve that the HC200X types pressure reducing valve of production can be used as the utility model embodiment.
How to be connected for air outlet pipe 303 with hard gas tube 2, a kind of example is given below:
Air outlet pipe 303 is connected with hard gas tube 2 by box cupling 4.
So set, being easily installed and dismantling, hard gas tube 2 can be made to be moved to after predeterminated position and connected again with gasing tank 3
It connects, gasing tank 3 is avoided to disturb the mobile generation of hard gas tube 2.
Specifically, box cupling 4 can be cylindrical metal pipe, and the internal diameter at left and right both ends respectively with hard gas tube 2 and outlet
The outer diameter of pipe 303 is identical, and hard gas tube 2 and air outlet pipe 3 are respectively protruding into the left and right both ends of box cupling 4, and with thread connecting mode
It is fixed.
The above is only the preferred embodiment of the present invention, the protection domain being not intended to limit the utility model,
Within the spirit and principle of the utility model, any modifications, equivalent replacements and improvements are made should be included in this reality
Within new protection domain.
Claims (7)
1. a kind of pipeline welding protecting device, which is characterized in that described device includes：At least two asbestos disks (1), one end closing
And hard gas tube (2), the gasing tank (3) of one end open；
The asbestos disk (1) is sleeved on the hard gas tube (2), and after pipeline to be welded (M) is stretched to, it is two neighboring
The asbestos disk (1) cooperatively forms sealed guard space with the pipeline (M) to be welded；
The openend of the hard gas tube (2) is connected with positioned at the external gasing tank (3) of the pipeline (M) to be welded；
Stomata (201) is provided on the hard gas tube (2) in the sealed guard space.
2. the apparatus according to claim 1, which is characterized in that multiple asbestos disks (1) are removably sleeved on described
On hard gas tube (2).
3. the apparatus of claim 2, which is characterized in that multiple stomatas (201) are evenly distributed on institute vertically
It states on hard gas tube (2)；
Dismountable blocking piece is provided on the stomata (201).
4. the apparatus according to claim 1, which is characterized in that the length of the hard gas tube (2) is adjustable.
5. device according to claim 4, which is characterized in that axially disposed on the outer wall of the hard gas tube (2)
There is scale.
6. the apparatus according to claim 1, which is characterized in that the gasing tank (3) includes：Main body (301), gas outlet
(302), air outlet pipe (303)；
The gas outlet (302) is arranged on the upper end of the main body (301)；
Described air outlet pipe (303) one end is connected with the gas outlet (302), and the other end is connected with the hard gas tube (2).
7. device according to claim 6, which is characterized in that the air outlet pipe (303) is logical with the hard gas tube (2)
Cross box cupling (4) connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721404656.5U CN207431562U (en) | 2017-10-27 | 2017-10-27 | A kind of pipeline welding protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721404656.5U CN207431562U (en) | 2017-10-27 | 2017-10-27 | A kind of pipeline welding protecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207431562U true CN207431562U (en) | 2018-06-01 |
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ID=62293279
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721404656.5U Active CN207431562U (en) | 2017-10-27 | 2017-10-27 | A kind of pipeline welding protecting device |
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| CN (1) | CN207431562U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110449790A (en) * | 2019-08-22 | 2019-11-15 | 中船黄埔文冲船舶有限公司 | A kind of inner wall of the pipe welding protective device |
-
2017
- 2017-10-27 CN CN201721404656.5U patent/CN207431562U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110449790A (en) * | 2019-08-22 | 2019-11-15 | 中船黄埔文冲船舶有限公司 | A kind of inner wall of the pipe welding protective device |
| CN110449790B (en) * | 2019-08-22 | 2021-12-28 | 中船黄埔文冲船舶有限公司 | Pipeline inner wall welding protection device |
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