CN208214619U - One kind is from centering backside gas shield jig - Google Patents
One kind is from centering backside gas shield jig Download PDFInfo
- Publication number
- CN208214619U CN208214619U CN201721372796.9U CN201721372796U CN208214619U CN 208214619 U CN208214619 U CN 208214619U CN 201721372796 U CN201721372796 U CN 201721372796U CN 208214619 U CN208214619 U CN 208214619U
- Authority
- CN
- China
- Prior art keywords
- protective cover
- lobe
- centering
- handle
- gas shield
- 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
Landscapes
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The utility model one kind belongs to welding technology field from centering backside gas shield jig；Technical problem to be solved are as follows: provide a kind of from centering, easy to use, the good internal bore welding backside gas shield jig of protecting effect；The technical solution of use are as follows: including protective cover main lobe, protective cover minor lobe, main handle, secondary handle, pin shaft and elastic component, protective cover main lobe, which connects to merging with protective cover minor lobe, constitutes cylindric protective cover, the ipsilateral binding end of protective cover main lobe and protective cover minor lobe is respectively equipped with main handle and secondary handle, main handle and secondary handle are symmetrical arranged and pass through pin shaft and connect and compose dovetail shaped kneading portion, self-healing elastic component is installed on pin shaft, air inlet is provided on protective cover, air inlet is connect by admission line with protective gas gas source, the inner wall both ends of protective cover main lobe and protective cover minor lobe are provided with sealing ring, with main lobe, minor lobe forms seal protection chamber, in the distal end away from air inlet, gas outlet is set, form the circulation protection system to welding region.
Description
Technical field
The utility model one kind belongs to welding technology field from centering backside gas shield jig, and in particular to one kind is used for
Internal bore welding from centering backside gas shield jig.
Background technique
Internal bore welding is a kind of joint geometry of complete penetraction and fusion in welding, has the advantage that 1. connector stress collection is medium and small, anti-vibration is tired
Labor intensity height, anti-crevice corrosion and stress corrosion resistant ability are good；2. it is small with tube sheet aperture under the conditions of internal diameter, to increase tube sheet
Rigidity；3. internal nondestructive inspection can be carried out, weld seam internal soundness can be supervised and be controlled；4. it is easy to automate, it fits
Together in the welding of a variety of materials.Therefore internal bore welding is widely used in nuclear industry, power industry, high temperature and pressure, strong corrosive or puts
In the heat exchanger of penetrating property medium.
Internal bore welding group clock synchronization the problems such as fit-up gap, causes group to bias, on the one hand increases usually since workpiece is self-possessed
On the other hand welding difficulty also improves the residual stress of weld metal zone, weaken the fatigue strength of weld metal zone.
When internal bore welding welding, if protection is bad, weld seam and its neighbouring base material will be oxidized, can reduce strength of welded joint and
Corrosion resistance, to influence whole service life.Weld seam front can protect gas or tail part protection gas to realize protection, back by rifle
Protection then needs Special back protective device to realize.
There is an urgent need to design specialized back side welding protective devices for internal bore welding to realize that auxiliary work-piece positioning and back of weld are protected
Shield guarantees welding quality to obtain excellent welding point.
Utility model content
The utility model overcomes inconvenient, gas back protection of exchanger tubes and tubesheets positioning assembly and disassembly existing in the prior art etc.
Deficiency existing for problem, technical problem to be solved are as follows: provide it is a kind of from centering, easy to use, protecting effect it is good in
Eyelet welding backside gas shield jig.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model are as follows: a kind of to be protected from centering backside gas
Retaining clip tool, including protective cover main lobe, protective cover minor lobe, main handle, secondary handle, pin shaft and elastic component, the protective cover main lobe and protection
Cover minor lobe, which connects to merging, constitutes cylindric protective cover, and the ipsilateral binding end of the protective cover main lobe and protective cover minor lobe is set respectively
There are a main handle and secondary handle, the main handle and secondary handle, which are symmetrical arranged and pass through pin shaft, connects and composes dovetail shaped kneading portion, on the pin shaft
Self-healing elastic component is installed, air inlet is provided on the protective cover, the air inlet passes through admission line and protection gas
The inner wall both ends of the connection of body gas source, protective cover main lobe and protective cover minor lobe are provided with sealing ring.
The protective cover main lobe is equipped with the guiding slope matched with the end joint of protective cover minor lobe.
The guiding slope is 15 ° of guiding slopes.
The sealing ring internal diameter of described protective cover one end is identical as the outer diameter of tube sheet boss or pipe fitting, and the protective cover other end
Sealing ring internal diameter is identical as the outer diameter of heat exchanger tube or pipe fitting.
The sealing ring joint of the protective cover main lobe and protective cover minor lobe far from air inlet side is equipped with outlet notch.
Mouth under the clamping of sealing ring is arranged in the outlet notch.
The subtended angle of the main handle and secondary handle in a free state is opened not less than protective cover main lobe and protective cover minor lobe to workpiece
Opening subtended angle when outer diameter.
The utility model has the advantages that compared with prior art
1, the utility model realizes the auxiliary positioning between workpiece by the sealing ring before and after protective cover, in the same of welding protection
When play the role of fixture, one side face of weld beautiful appearance, weld seam color is silvery white in color or golden yellow, plays to weld seam
Good protective effect；On the other hand play the role of good auxiliary positioning, the concentricity between workpiece is ensured well；
2, the utility model during installation, as long as gently press main handle and secondary handle can by lever principle by protective cover main lobe with
Protective cover minor lobe is opened, and covers upper workpiece from side, after loosing one's grip under the action of the elastic member protective cover main lobe and protective cover minor lobe from
It is dynamic to clamp workpiece, it fits closely the sealing ring at protective cover both ends with two end pieces, realizes good protection, after the completion of welding,
It is easy-to-use as long as gently pressing main handle 3 that can easily remove back-protective fixture with secondary handle 4.
Detailed description of the invention
The utility model is described in more detail with reference to the accompanying drawing；
Fig. 1 is the structural schematic diagram provided by the utility model from centering backside gas shield jig；
Fig. 2 is the use state diagram of the utility model；
Fig. 3 is the use scheme of installation that the utility model is used to weld tube sheet boss and heat exchanger tube；
Fig. 4 is the use scheme of installation that the utility model is used to weld two tube bodies；
In figure: 1 is protective cover main lobe, and 2 be protective cover minor lobe, and 3 be main handle, and 4 be secondary handle, and 5 be pin shaft, and 6 be elastic component, 7
It is sealing ring for air inlet, 8,9 be guiding slope, and 10 be outlet notch, and 11 be tube sheet boss, and 12 be heat exchanger tube, and 13 be pipe fitting.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is a part of the embodiment of the utility model, instead of all the embodiments；Based on the reality in the utility model
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to
In the range of the utility model protection.
Fig. 1 is this practical new structural schematic diagram from centering backside gas shield jig provided, as shown in Figure 1, a kind of
From centering backside gas shield jig, including protective cover main lobe 1, protective cover minor lobe 2, main handle 3, secondary handle 4, pin shaft 5 and elastic component
6, the protective cover main lobe 1, which connects to merging with protective cover minor lobe 2, constitutes cylindric protective cover, the protective cover main lobe 1 and guarantor
The ipsilateral binding end of shield minor lobe 2 is respectively equipped with main handle 3 and secondary handle 4, and the main handle 3 and secondary handle 4 are symmetrical arranged and pass through pin shaft 5
Dovetail shaped kneading portion is connected and composed, self-healing elastic component 6 is installed on the pin shaft 5, is provided with air inlet on the protective cover
Mouth 7, the air inlet 7 are connect by admission line with protective gas gas source, the inner wall of protective cover main lobe 1 and protective cover minor lobe 2
Both ends are provided with sealing ring 8.
The protective cover main lobe 1 is equipped with the guiding slope 9 matched with the end joint of protective cover minor lobe 2.
The guiding slope 9 is 15 ° of guiding slopes.
The sealing ring internal diameter of described protective cover one end is identical as the outer diameter of tube sheet boss or pipe fitting, and the protective cover other end
Sealing ring internal diameter is identical as the outer diameter of heat exchanger tube or pipe fitting.
The protective cover main lobe 1 is equipped with outlet notch far from 8 joint of sealing ring of 7 side of air inlet with protective cover minor lobe 2
10。
Mouth under the clamping of sealing ring 8 is arranged in the outlet notch 10, and outlet notch 10 should be arranged far from personnel behaviour
Make end, avoids causing personal injury by the high-temperature gas of welding section.
The subtended angle of the main handle 3 and secondary handle 4 in a free state not less than protective cover main lobe 1 and protective cover minor lobe 2 open to
Opening subtended angle when workpiece outer diameter guarantees that the utility model can be removed smoothly from workpiece.
As shown in Fig. 2, the utility model utilizes lever principle, gently the main handle 3 of pinching and secondary handle 4 separate protective cover standby
With under 6 self-healing of elastic component, protective cover main lobe 1 and protective cover minor lobe 2 pass through 15 ° of guiding 9 centerings of slope and clamp two
A workpiece also forms a complete protection chamber, realizes the guarantor to area to be welded while realizing the accurate positionin between workpiece
Shield, it is easy to use, protecting effect is good.
The utility model in production, be biased to minor lobe protective cover 2 and be arranged, therefore main lobe protective cover 1 is larger by 15 ° of guiding slopes 9,
In order to which smooth the utility model can be loaded and unloaded smoothly on workpiece.
Application of the utility model in the welding of tube sheet boss 11 and heat exchanger tube 12:
As shown in figure 3,8 internal diameter of sealing ring of described protective cover one end is identical as the outer diameter of tube sheet boss 11, and protective cover
The sealing ring internal diameter of the other end is identical as 12 outer diameter of heat exchanger tube, and before welding, one end of the utility model is stuck in tube sheet boss 11
And the other end is stuck on heat exchanger tube 12, to realize that tube sheet boss 11 and the positioning of heat exchanger tube 12 clamp and guarantee the sealing of pad
Environment realizes effective welding of tube sheet boss 11 and heat exchanger tube 12.
Application of the utility model in two welding of pipe fitting 13:
As shown in figure 4,8 internal diameter of sealing ring at the protective cover both ends is identical as two 13 outer diameters of pipe fitting respectively, welding
Before, outer wall of the both ends of the utility model respectively with two pipe fittings 13 fits closely, to realize the locating clip of two tube sheets 13
Sealed environment that is tight and guaranteeing pad, realizes effective welding of two pipe fittings 13.
Carry out welding effect achieved using the utility model be: one side face of weld beautiful appearance, weld seam color
It is silvery white in color or golden yellow, plays a very good protection to weld seam；Concentricity between another aspect welding workpiece obtains
It ensures well.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (7)
1. a kind of from centering backside gas shield jig, it is characterised in that: including protective cover main lobe (1), protective cover minor lobe (2),
Main handle (3), secondary handle (4), pin shaft (5) and elastic component (6), the protective cover main lobe (1) connects with protective cover minor lobe (2) merges structure
At cylindric protective cover, the ipsilateral binding end of the protective cover main lobe (1) and protective cover minor lobe (2) is respectively equipped with main handle (3)
With secondary handle (4), the main handle (3) and secondary handle (4) are symmetrical arranged and connect and compose dovetail shaped kneading portion by pin shaft (5), described
It is equipped with self-healing elastic component (6), is provided on the protective cover air inlet (7) on pin shaft (5), the air inlet (7) is logical
It crosses admission line to connect with protective gas gas source, the inner wall both ends of protective cover main lobe (1) and protective cover minor lobe (2) are provided with close
Seal ring (8).
2. according to claim 1 a kind of from centering backside gas shield jig, it is characterised in that: the protective cover main lobe
(1) the guiding slope (9) matched is equipped with the end joint of protective cover minor lobe (2).
3. according to claim 2 a kind of from centering backside gas shield jig, it is characterised in that: the guiding slope (9)
For 15 ° of guiding slopes.
4. according to claim 1 or 2 a kind of from centering backside gas shield jig, it is characterised in that: the protective cover
The sealing ring internal diameter of one end is identical as the outer diameter of tube sheet boss or pipe fitting, and the sealing ring internal diameter and heat exchanger tube of the protective cover other end
Or the outer diameter of pipe fitting is identical.
5. according to claim 1 or 2 a kind of from centering backside gas shield jig, it is characterised in that: the protective cover
Main lobe (1) and sealing ring (8) joint of protective cover minor lobe (2) far from air inlet (7) side are equipped with outlet notch (10).
6. according to claim 5 a kind of from centering backside gas shield jig, it is characterised in that: the outlet notch
(10) mouth is set under the clamping of sealing ring (8).
7. according to claim 1 or 2 a kind of from centering backside gas shield jig, it is characterised in that: the main handle (3)
When being opened not less than protective cover main lobe (1) and protective cover minor lobe (2) to workpiece outer diameter with the subtended angle of secondary handle (4) in a free state
Be open subtended angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721372796.9U CN208214619U (en) | 2017-10-18 | 2017-10-18 | One kind is from centering backside gas shield jig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721372796.9U CN208214619U (en) | 2017-10-18 | 2017-10-18 | One kind is from centering backside gas shield jig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208214619U true CN208214619U (en) | 2018-12-11 |
Family
ID=64532201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721372796.9U Active CN208214619U (en) | 2017-10-18 | 2017-10-18 | One kind is from centering backside gas shield jig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208214619U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115229310A (en) * | 2022-08-23 | 2022-10-25 | 上海电气电站设备有限公司 | Inner hole high-melting-depth single-pass tungsten electrode gas shielded welding method |
-
2017
- 2017-10-18 CN CN201721372796.9U patent/CN208214619U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115229310A (en) * | 2022-08-23 | 2022-10-25 | 上海电气电站设备有限公司 | Inner hole high-melting-depth single-pass tungsten electrode gas shielded welding method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2171483A (en) | Pipe repair clamp | |
| CN107606356A (en) | It is a kind of can Fast Installation or dismounting metal hose joint | |
| CN208214619U (en) | One kind is from centering backside gas shield jig | |
| WO2013155703A1 (en) | Articulated joint type middle-high pressure pipeline connecting piece | |
| CN201289423Y (en) | Leak detection structure for composite board equipment | |
| CN206310133U (en) | Single tube pressure test quick coupling | |
| CN106150648A (en) | A kind of electromotor and exhaust manifold thereof | |
| CN206458937U (en) | A kind of V hoop components provided with inner lining structure | |
| CN211738386U (en) | Improved silencer | |
| CN204829000U (en) | Stainless steel pipe fitting extends limit connection structure | |
| CN211877323U (en) | Plate heat exchanger pressure testing frock | |
| CN203880320U (en) | Nozzle seal structure of gas metal tube | |
| CN211289108U (en) | Novel building heating and ventilation pipeline connecting device | |
| CN211059547U (en) | Quick coupling mechanism of pipeline based on municipal hydraulic engineering uses | |
| CN206904415U (en) | A kind of flange | |
| CN207554174U (en) | The Hermetical connecting structure of the exhaust pipe of engine and expansion joint | |
| CN107166123B (en) | It is a kind of for transmitting the split channel device of extra-high | |
| CN207923381U (en) | Heating tube tightness test device peculiar to vessel | |
| CN204664671U (en) | A kind of rapid abutting joint pipe | |
| CN204805775U (en) | High pressure resistant clamp of two contact surface metal seal prevention of seepage locking formula pipeline connecting device | |
| CN212900249U (en) | Non-welded flange self-tightening mechanism | |
| CN107387910A (en) | A kind of application method of the joint of metal hose | |
| CN216201502U (en) | Stainless steel air conditioner pipeline | |
| CN208871211U (en) | Fuel gas conduit peculiar to vessel | |
| CN212132496U (en) | Flue gas cooling device for fire resistance test of pipeline building component |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |