CN209754245U - Surfacing welding gun nozzle short-circuit structure - Google Patents
Surfacing welding gun nozzle short-circuit structure Download PDFInfo
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- CN209754245U CN209754245U CN201920366779.7U CN201920366779U CN209754245U CN 209754245 U CN209754245 U CN 209754245U CN 201920366779 U CN201920366779 U CN 201920366779U CN 209754245 U CN209754245 U CN 209754245U
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Abstract
the utility model provides a build-up welding torch nozzle short-circuit structure, which comprises at least one build-up welding torch nozzle short-circuit joint, wherein the build-up welding torch nozzle short-circuit joint comprises a joint body and a first connecting end, and the joint body is provided with a first screw hole from the first end; the first connecting end is formed or connected to the second end of the connector body, a first external thread matched with the first internal thread of the first screw hole is formed on the outer wall of the first connecting end, and the central axis of the first connecting end and the central axis of the first screw hole are on the same straight line; the first connecting end forms a connecting pore passage which is communicated with the first screw hole. The utility model discloses a build-up welding welder nozzle short circuit structure can adjust the distance between build-up welding welder nozzle and the rifle head conveniently, and then adjusts welder's suitable for welding footpath for build-up welding welder can use in the complicated workpiece structure of great radius ratio of becoming, has improved build-up welding welder's application range, has reduced the work load of build-up welding, has practiced thrift the processing cost.
Description
Technical Field
The invention relates to the field of surfacing devices, in particular to a surfacing welding gun nozzle short-circuit structure.
Background
Referring to fig. 1, currently, for various HH-grade valve bodies, four-way joints, flanges and the like applied to oil and gas drilling and production equipment, a layer of Inconel625 nickel-based alloy needs to be overlaid on an inner cavity and a backing ring groove of the HH-grade valve body, the four-way joints, the flanges and the like, and the overlaying layer is more than 3.2mm after finish machining. The most common surfacing method at present is pulsed hot wire argon tungsten-arc welding, and a surfacing layer formed by the method is high in quality and generally free of welding defects. However, due to the limitation of equipment, the structure of a workpiece to be subjected to surfacing welding is relatively simple, and the conventional surfacing welding device is generally in a structure that a gun head 2 is directly connected with a nozzle 3; in the case of the 6 th nozzle, the tungsten needle at the tip of the welding gun nozzle 3 is about 30mm away from the side of the welding gun barrel 4 close to the workpiece 5. When the workpiece 5 with the reducing inner cavity is subjected to surfacing welding, the step height difference h1 of two different inner diameters must be smaller than 30mm, otherwise, the workpiece 5 or a gun barrel is in contact, a short circuit is generated, and the gun barrel 4 of the welding gun can be burnt out. Therefore, in the face of a workpiece 5 with a complex structure and large diameter-changing ratio, the whole pre-welding structure of the current surfacing device is often required to be changed, so that the surfacing workload is increased, and a lot of unnecessary resource waste is caused.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the short-circuit structure of the nozzle of the surfacing welding gun, which can conveniently adjust the distance between the nozzle of the surfacing welding gun and the gun head so as to adjust the applicable welding diameter of the welding gun, so that the surfacing welding gun can be used in a complex workpiece structure with a large diameter-variable ratio, the application range of the surfacing welding gun is enlarged, the workload of surfacing welding is reduced, and the processing cost is saved.
In order to achieve the purpose, the invention provides a short-circuit structure of a surfacing welding gun nozzle, which comprises at least one surfacing welding gun nozzle short-circuit joint, wherein the surfacing welding gun nozzle short-circuit joint comprises a joint body and a first connecting end, and the joint body is provided with a first screw hole from the first end; the first connecting end is formed or connected to the second end of the connector body, a first external thread matched with the first internal thread of the first screw hole is formed on the outer wall of the first connecting end, and the central axis of the first connecting end and the central axis of the first screw hole are on the same straight line; the first connecting end forms a connecting pore channel which is communicated with the first screw hole.
Preferably, the surface shape of the second end of the fitting body matches the surface shape of the first end of the fitting body.
Preferably, the connection aperture is coaxial with the first connection end.
Preferably, the device also comprises a gun head and a nozzle, wherein the nozzle forms a second connecting end, and the gun head forms a second screw hole; the second connecting end forms a second external thread matched with the first internal thread of the first screw hole; the second screw hole forms a second internal thread matched with the first external thread; the nozzle is connected with the gun head through the short nozzle joint of the surfacing welding gun.
Preferably, the device comprises a plurality of surfacing welding gun nozzle short joints which are connected in sequence; and the first screw hole of the previous surfacing welding gun nozzle short joint is in threaded connection with the first connecting end of the next surfacing welding gun nozzle short joint.
Preferably, the first end surface of the previous short nozzle joint of the surfacing welding gun is attached to the second end surface of the next short nozzle joint of the surfacing welding gun.
Preferably, the gun head is in threaded connection with the first connecting end of one surfacing welding gun nozzle short joint positioned at one end of the surfacing welding gun nozzle short joints through the second screw hole; the nozzle is in threaded connection with the second screw hole of the short overlaying welding gun nozzle joint at the other end of the short overlaying welding gun nozzle joints through the second connecting end.
Preferably, the welding gun further comprises a welding gun barrel, and the gun head is connected with the welding gun barrel.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
The outer wall of the first connecting end forms a first external thread matched with the first internal thread of the first screw hole, a plurality of surfacing welding gun nozzle short connectors can be sequentially connected in series, the number of the surfacing welding gun nozzle short connectors connected between the gun head and the nozzle can be conveniently adjusted as required, and the applicable welding diameter of the welding gun can be adjusted. The surface shape of the second end of the connector body is matched with the surface shape of the first end of the connector body, so that when more than two surfacing welding gun nozzle short connectors are connected in series, the structure between the adjacent surfacing welding gun nozzle short connectors is stable, and stable processing is guaranteed. The connecting channel is used as a channel for communicating the gun head and the nozzle; the connecting pore channel is coaxial with the first connecting end, and when the plurality of surfacing welding gun nozzle short connectors are connected in series, a channel penetrating through the gun heads and the nozzles can be formed in the middle of the surfacing welding gun nozzle short connectors.
Drawings
FIG. 1 is a schematic view of a prior art weld build-up welding gun configuration;
FIG. 2 is a schematic structural diagram of a nozzle short-circuit structure of a build-up welding gun according to an embodiment of the invention;
FIG. 3 is an enlarged schematic structural diagram of a short-circuit structure of a nozzle of a build-up welding gun according to an embodiment of the invention;
Fig. 4 is a schematic structural diagram of a short nozzle joint of a build-up welding gun according to an embodiment of the invention.
Detailed Description
The following description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings 2-4, and will make the functions and features of the invention better understood.
referring to fig. 2 and 4, a short-circuit structure of a bead welding gun nozzle according to an embodiment of the present invention includes at least one short-circuit connector 1 of a bead welding gun nozzle, where the short-circuit connector 1 of a bead welding gun nozzle includes a connector body 11 and a first connection end 12, and the connector body 11 is provided with a first screw hole 111 from a first end; the first connection end 12 is formed or connected to the second end of the connector body 11, a first external thread 121 matched with the first internal thread 112 of the first screw hole 111 is formed on the outer wall of the first connection end 12, and the central axis of the first connection end 12 and the central axis of the first screw hole 111 are on the same straight line; the first connection end 12 forms a connection hole 122, and the connection hole 122 is communicated with the first screw hole 111.
The outer wall of the first connecting end 12 forms a first external thread 121 matched with the first internal thread 112 of the first screw hole 111, so that a plurality of surfacing welding gun nozzle short connectors 1 can be connected in series in sequence, the number of the surfacing welding gun nozzle short connectors 1 connected between the gun head 2 and the nozzle 3 can be conveniently adjusted as required, and the applicable welding diameter of the welding gun can be adjusted, so that the surfacing welding gun can be used in a complex workpiece structure with a large diameter ratio, the application range of the surfacing welding gun is enlarged, the workload of surfacing welding is reduced, and the processing cost is saved.
The surface shape of the second end of the joint body 11 matches the surface shape of the first end of the joint body 11. Therefore, when more than two surfacing welding gun nozzle short joints 1 are connected in series, the structure between the adjacent surfacing welding gun nozzle short joints 1 is stable, and stable processing is guaranteed.
The connecting bore 122 is coaxial with the first connection end 12. When the plurality of short nozzle joints 1 of the surfacing welding gun are connected in series, a channel penetrating through the gun heads 2 and the nozzles 3 can be formed in the middle of the plurality of short nozzle joints 1 of the surfacing welding gun.
Referring to fig. 2 and 3, in the present embodiment, the welding gun further includes a gun head 2, a nozzle 3 and a gun barrel 4 of the welding gun, the nozzle 3 forms a second connection end 31, and the gun head 2 forms a second screw hole 21; the second connection end 31 forms a second external thread that mates with the first internal thread 112 of the first screw hole 111; the second screw hole 21 forms a second internal thread that mates with the first external thread 121; the nozzle 3 is connected with the gun head 2 through a short nozzle joint 1 of the surfacing welding gun; the gun head 2 is connected with a gun barrel 4 of the welding gun.
In the embodiment, the device comprises a plurality of overlaying welding gun nozzle short joints 1 which are connected in sequence; the first screw hole 111 of the upper stack of welding torch nozzle stub 1 is screwed with the first connection end 12 of the lower stack of welding torch nozzle stub 1.
The first end surface of the nozzle short joint 1 of the welding gun in the last pile is attached to the second end surface of the nozzle short joint 1 of the welding gun in the next pile; the stability of the connecting structure is ensured.
The gun head 2 is in threaded connection with a first connecting end 12 of a short nozzle joint 1 of a build-up welding gun which is positioned at one end of the short nozzle joints 1 of the build-up welding gun through a second screw hole 21; the nozzle 3 is screwed with the second screw hole 21 of the short nozzle joint 1 of the build-up welding gun at the other end of the short nozzle joints 1 of the build-up welding gun through the second connecting end 31.
According to the surfacing welding gun nozzle short-circuit structure provided by the embodiment of the invention, when large-reducing inner cavity surfacing is encountered, the required number of surfacing welding gun nozzle short-circuit joints 1 can be connected between the gun head 2 and the nozzle 3, and the specifications of the surfacing welding gun nozzle short-circuit joints 1 can be manufactured according to the specifications of the nozzle 3. Taking the installation of No. 6 nozzle as an example, under the condition of installing 3 surfacing welding gun nozzle short connectors 1, the distance between the tungsten needle at the tip of the welding gun nozzle 3 and the welding gun barrel 4 is about 81mm, the length h2 of the step of the inner cavity of the weldable workpiece 5 can be close to 81mm, the accessibility of welding gun is greatly improved, and the application range of a surfacing welding product of automatic surfacing welding equipment can be effectively improved.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (8)
1. A short-circuit structure of a surfacing welding gun nozzle is characterized by comprising at least one surfacing welding gun nozzle short-circuit joint, wherein the surfacing welding gun nozzle short-circuit joint comprises a joint body and a first connecting end, and the joint body is provided with a first screw hole from a first end; the first connecting end is formed or connected to the second end of the connector body, a first external thread matched with the first internal thread of the first screw hole is formed on the outer wall of the first connecting end, and the central axis of the first connecting end and the central axis of the first screw hole are on the same straight line; the first connecting end forms a connecting pore channel which is communicated with the first screw hole.
2. The weld overlay welding gun nozzle short circuit structure according to claim 1, wherein a surface shape of the second end of the joint body matches a surface shape of the first end of the joint body.
3. The weld overlay welding gun nozzle short circuit structure according to claim 2, wherein the connection bore is coaxial with the first connection end.
4. The short-circuit structure of the nozzle of the surfacing welding gun according to any one of claims 1 to 3, further comprising a gun head and a nozzle, wherein the nozzle forms a second connecting end, and the gun head forms a second screw hole; the second connecting end forms a second external thread matched with the first internal thread of the first screw hole; the second screw hole forms a second internal thread matched with the first external thread; the nozzle is connected with the gun head through the short nozzle joint of the surfacing welding gun.
5. The short-circuit structure of the bead welding gun nozzle according to claim 4, comprising a plurality of the bead welding gun nozzle short-circuits connected in sequence; and the first screw hole of the previous surfacing welding gun nozzle short joint is in threaded connection with the first connecting end of the next surfacing welding gun nozzle short joint.
6. The short-circuit structure of the bead welding gun nozzle according to claim 5, wherein a first end surface of the previous bead welding gun nozzle short-circuit joint is attached to a second end surface of the next bead welding gun nozzle short-circuit joint.
7. The short-circuit structure of the bead welding gun nozzle according to claim 6, wherein the gun head is screwed with the first connection end of one of the bead welding gun nozzle short connectors located at one end of the plurality of bead welding gun nozzle short connectors through the second screw hole; the nozzle is in threaded connection with the second screw hole of the short overlaying welding gun nozzle joint at the other end of the short overlaying welding gun nozzle joints through the second connecting end.
8. The weld overlay welding gun nozzle short circuit structure according to claim 7, further comprising a welding gun barrel, wherein the gun head is connected with the welding gun barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920366779.7U CN209754245U (en) | 2019-03-21 | 2019-03-21 | Surfacing welding gun nozzle short-circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920366779.7U CN209754245U (en) | 2019-03-21 | 2019-03-21 | Surfacing welding gun nozzle short-circuit structure |
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| Publication Number | Publication Date |
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| CN209754245U true CN209754245U (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920366779.7U Active CN209754245U (en) | 2019-03-21 | 2019-03-21 | Surfacing welding gun nozzle short-circuit structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111822816A (en) * | 2020-07-21 | 2020-10-27 | 福尼斯(南京)表面工程技术有限公司 | Method for automatically overlaying three-way valve by using novel overlaying equipment |
-
2019
- 2019-03-21 CN CN201920366779.7U patent/CN209754245U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111822816A (en) * | 2020-07-21 | 2020-10-27 | 福尼斯(南京)表面工程技术有限公司 | Method for automatically overlaying three-way valve by using novel overlaying equipment |
| CN111822816B (en) * | 2020-07-21 | 2022-04-22 | 福尼斯(南京)表面工程技术有限公司 | Method for automatically overlaying three-way valve by using novel overlaying equipment |
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Effective date of registration: 20221017 Granted publication date: 20191210 |
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