CN216483556U - High-voltage thermometer sleeve - Google Patents
High-voltage thermometer sleeve Download PDFInfo
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- CN216483556U CN216483556U CN202122706865.8U CN202122706865U CN216483556U CN 216483556 U CN216483556 U CN 216483556U CN 202122706865 U CN202122706865 U CN 202122706865U CN 216483556 U CN216483556 U CN 216483556U
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- bevel chamfer
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Abstract
The utility model relates to a high-voltage thermometer sleeve, and belongs to the technical field of container temperature measurement. The sleeve comprises an outer flange and a middle flange which are fixedly connected through welding of an outer connecting pipe, and the middle flange is fixedly connected with a plug through welding of at least one section of inner connecting pipe; a circumferential first outer bevel chamfer is formed at one side of the welded butt joint, and an insertion protrusion axially extends from the position, adjacent to the inner hole, of the first outer bevel chamfer; a circumferential second outer bevel chamfer is formed on the other side of the welded butt joint, and an insertion groove is axially formed at the position, adjacent to the inner hole, of the second outer bevel chamfer; the insertion convex is matched with the insertion concave; during welding, the inserting protrusion protrudes into the inserting recess to form an outward V-shaped welding groove with closed interior. After the welding is fixedly connected, due to the axial positioning action of the convex insertion part and the concave insertion part which are mutually matched, the phenomenon of edge dislocation generated during butt welding can be avoided, and the convex insertion part seals the inside of the V-shaped welding groove, so that the inner side after welding is stopped from generating a residual height bulge, and the smooth installation of a subsequent thermometer or thermocouple element is ensured.
Description
Technical Field
The utility model relates to a high-voltage thermometer sleeve, in particular to a welding structure of the thermometer sleeve, and belongs to the technical field of container temperature measurement.
Background
Large chemical container equipment related to ammonia synthesis, such as ammonia synthesis towers, methanol reaction towers, shift converters and the like, has the characteristics of high working pressure (above 10 MP) and high working temperature, and needs to comprise a special thermowell or thermowell for installing a thermometer or a thermocouple element so as to monitor and control the normal operation of the equipment. After the sleeve is manufactured, the inner side of the sleeve is concentric, the inner surface of the sleeve is free from bulges, high pressure resistance is realized, and leakage is avoided, so that the normal field installation and use of the thermometer or thermocouple element are met.
The conventional sleeve generally comprises a connecting flange, a sleeve main body, a plug or a pipe cap, and is applied to vertical large-scale container equipment, so that the total length of the sleeve is more than 20m, and the sleeve needs to be designed into a multi-section splicing structure. The traditional mode is that the splicing part adopts pure outer groove butt welding, the misalignment is easy to generate during the assembly, and the inner side has a residual height bulge after welding, so that the installation requirement of a subsequent thermometer or thermocouple element is difficult to meet.
Disclosure of Invention
The utility model aims to: aiming at the problems in the prior art, the high-voltage thermometer sleeve capable of effectively avoiding the defects of misalignment, inner side protrusion and the like is provided through structural improvement, so that the one-time qualification rate of manufacturing and processing is improved, and the manufacturing cost is saved.
In order to achieve the purpose, the high-pressure thermometer sleeve comprises an outer flange and a middle flange which are fixedly connected through an outer connecting pipe in a welding mode, wherein the middle flange is fixedly connected with a plug through at least one section of inner connecting pipe in a welding mode;
a circumferential first outer bevel chamfer is formed at one side of the welded butt joint, and an insertion protrusion axially extends from the position, adjacent to the inner hole, of the first outer bevel chamfer; a circumferential second outer bevel chamfer is formed on the other side of the welded butt joint, and an insertion recess is axially formed at the position, adjacent to the inner hole, of the second outer bevel chamfer; the insertion convex is matched with the insertion concave;
during welding, the inserting protrusion protrudes into the inserting recess to form an outward V-shaped welding groove with the inner part sealed.
After the welding is fixedly connected, due to the axial positioning effect of the insertion convex and the insertion concave which are mutually matched, the phenomenon of edge dislocation during butt welding can be avoided, and the insertion convex seals the inside of the V-shaped welding groove, so that the excessive height bulge on the inner side after welding is avoided, and the smooth installation of a subsequent thermometer or thermocouple element is ensured.
The utility model has the further perfection that: the length of the insertion projection is greater than that of the insertion recess.
The utility model has the further perfection that: the insertion protrusion protrudes into the insertion recess to form an axial weld gap.
The utility model has the further improvement that: the insertion protrusion protrudes into the insertion recess to form a radial weld gap.
The utility model has the further perfection that: the other insertion protrusion is provided with an external thread, and the insertion recess is provided with an internal thread; the male insertion threads are matched with the female insertion threads.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
FIG. 2 is an enlarged partial sectional view of the butt weld at the tailor welded joint of FIG. 1.
Fig. 3 is a schematic view of a partial cross-sectional enlarged structure of the butt-welded tailor-welded part in fig. 1.
FIG. 4 is an enlarged partial sectional view of the welding part of the second tailor-welded joint according to the embodiment.
FIG. 5 is an enlarged partial sectional view of the butt-welded joint in the second embodiment.
Detailed Description
Example one
The high-pressure thermometer sleeve of this embodiment is shown in fig. 1, and the outer flange 1 is a neck-butt welding flange, and is fixedly connected with the outer end corresponding to the outer connecting pipe 2 and the middle flange 3 by welding. The middle flange 3 is fixedly connected with the plug 5 through a plurality of sections of inner connecting pipes 4 in a welding way according to the requirement of the installation length.
The welded butt joint (taking the outer end welding part corresponding to the welding end of the outer flange 1 and the outer connecting pipe 2 as an example, and the rest can be analogized) is shown in fig. 3 and 4, one side of the welding end of the outer flange 1 is provided with a circumferential first outer bevel chamfer 1-1 which rotates in the circumferential direction, and an inserting projection 1-2 axially extends from the position, adjacent to the inner hole, of the first outer bevel chamfer 1-1. The other side of the welded butt joint is the outer end corresponding to the outer connecting pipe 2 and is provided with a circumferential second outer bevel chamfer 2-1, and an inserting groove 2-2 is axially formed at the position, adjacent to the inner hole, of the second outer bevel chamfer 2-1. The insertion projection 1-2 is fitted with the insertion recess 2-2. Because the length of the insertion projection 1-2 is longer than the length L2 of the insertion recess 2-2, when the insertion projection 1-2 extends into the insertion recess 2-2 for axial positioning during welding to form a V-shaped welding groove which is internally closed and faces outwards at 60 degrees, an axial weld gap L1 and a radial weld gap L3 are formed between the insertion projection 1-2 and the insertion recess 2-2, and thus the welding operability of the splicing weld can be improved more effectively.
Example two
The basic structure of the high-voltage thermo-well tube of this embodiment is the same as that of the first embodiment. The difference is that as shown in fig. 4 and fig. 5, an insertion convex 1-2 at one side of the tapered end of the external flange 1 is provided with an external thread, and an insertion concave 2-2 of the external connecting pipe 2 is provided with an internal thread. The external thread of the insert boss 1-2 is matched with the internal thread of the insert recess 2-2. During welding, the inserting projection 1-2 extends into the inserting recess 2-2 through screwing threads, so that the operability of sectional assembly and subsequent welding is further improved.
Practice shows that the embodiment ensures that all sections of the thermometer sleeve are concentric after being spliced by using the plug-in step structure, the primary qualified rate of splicing weld joint detection is obviously improved, no bulge exists on the inner side after welding, and subsequent smooth installation of a thermometer or a thermocouple element is practically met.
In addition to the above embodiments, the present invention may have other similar embodiments, and all technical solutions formed by equivalent transformation fall within the protection scope of the present invention.
Claims (5)
1. A high-voltage thermometer sleeve is characterized in that: the flange joint comprises an outer flange and a middle flange which are fixedly connected through welding of an outer connecting pipe, wherein the middle flange is fixedly connected with a plug through welding of at least one section of inner connecting pipe; the method is characterized in that:
a circumferential first outer bevel chamfer is formed at one side of the welded butt joint, and an insertion protrusion axially extends from the position, adjacent to the inner hole, of the first outer bevel chamfer; a circumferential second outer bevel chamfer is formed on the other side of the welded butt joint, and an insertion recess is axially formed at the position, adjacent to the inner hole, of the second outer bevel chamfer; the insertion convex is matched with the insertion concave;
during welding, the inserting protrusion protrudes into the inserting recess to form an outward V-shaped welding groove with the inner part sealed.
2. The high-pressure thermo-well tube according to claim 1, wherein: the length of the insertion projection is greater than that of the insertion recess.
3. The high-pressure thermo-well tube according to claim 2, wherein: the insertion protrusion protrudes into the insertion recess to form an axial weld gap.
4. The high-pressure thermo-well tube according to claim 3, wherein: the insertion protrusion protrudes into the insertion recess to form a radial weld gap.
5. The high-pressure thermo-well tube according to claim 3, wherein: the insertion protrusion is provided with an external thread, and the insertion recess is provided with an internal thread; the male insertion threads are matched with the female insertion threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122706865.8U CN216483556U (en) | 2021-11-05 | 2021-11-05 | High-voltage thermometer sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122706865.8U CN216483556U (en) | 2021-11-05 | 2021-11-05 | High-voltage thermometer sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216483556U true CN216483556U (en) | 2022-05-10 |
Family
ID=81447157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122706865.8U Active CN216483556U (en) | 2021-11-05 | 2021-11-05 | High-voltage thermometer sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216483556U (en) |
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2021
- 2021-11-05 CN CN202122706865.8U patent/CN216483556U/en active Active
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