CN213510867U - Collection case with oval throat head - Google Patents
Collection case with oval throat head Download PDFInfo
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- CN213510867U CN213510867U CN202022561688.4U CN202022561688U CN213510867U CN 213510867 U CN213510867 U CN 213510867U CN 202022561688 U CN202022561688 U CN 202022561688U CN 213510867 U CN213510867 U CN 213510867U
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Abstract
The utility model discloses a collection case with oval throat head belongs to metal material machining technical field. One end of the header cylinder is hot-spinning molded with an elliptical necking end socket, a necking hole is reserved on the elliptical necking end socket, the necking hole is connected with a first pipe joint, and the header cylinder is connected with a plurality of second pipe joints. The utility model discloses avoided loaded down with trivial details processes such as processing head and welding groove, need not carry out a large amount of welding to head and collection case barrel, avoided the quality hidden danger that the welding brought, avoided the possibility that collection case end cover drops, improved the security and the reliability of thermal power unit operation. Meanwhile, the necking hole left by the hot spinning process is connected with the first pipe joint, and the hole generated by the hot spinning process is utilized, so that the manpower and material resources for opening the hole are saved, the production efficiency is improved, and the method has a good application prospect.
Description
Technical Field
The utility model belongs to the technical field of metal material machining, concretely relates to collection case with oval throat head.
Background
The reliability of the header plays a crucial role in the normal operation of the whole unit of the power plant, as shown in fig. 2, at present, the header seal head is generally a welding end cover, and because a qualified welding line needs to be subjected to a plurality of processes such as welding, heat treatment, nondestructive testing and the like, if any one process cannot be strictly executed, the welding line is possibly unqualified, the more the welding lines are, the greater the possible safety risk is, and the unreliability of the unit operation is increased.
In journal of physical and chemical examination physical volume, article number: 1001-4012(2014)10-0759-04, which is mentioned in the analysis on the cause of breakage and falling of the end cover of the header of a certain waste heat boiler, brings huge risks to normal operation of a unit of a power plant due to falling of the end cover of the header.
Disclosure of Invention
In order to solve the defects existing in the prior art, the utility model aims to provide a header with oval throat head has reduced the welding seam quantity of header, has improved the production efficiency and the operating stability, the reliability of header.
The utility model discloses a following technical scheme realizes:
the utility model discloses a collection case with oval throat head, including the collection case barrel, the one end hot spinning forming of collection case barrel has oval throat head, leaves the throat hole on the oval throat head, and the throat hole is connected with first coupling, is connected with a plurality of second couplings on the collection case barrel.
Preferably, the outer diameter of the cylinder body of the header is 160-350 mm, and the wall thickness is less than or equal to 30 mm.
Preferably, the thickness of the elliptic necking end socket is 90-100% of the wall thickness of the header cylinder.
Preferably, the centre of the throat opening is located on the axis of the header cylinder.
Preferably, the diameter of the hot-spinning orifice is 20 ± 5 mm.
Preferably, the diameter of the constricted hole is smaller than the outer diameter of the first pipe joint.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model discloses a collection case with oval throat head, the oval throat head of the one end hot spin molding integral type of collection case barrel has avoided loaded down with trivial details processes such as processing head and welding groove, need not carry out a large amount of weldings to head and collection case barrel, has avoided the quality hidden danger that the welding brought, has avoided the possibility that collection case end cover drops, has improved the security and the reliability of thermal power unit operation. Meanwhile, the necking hole left by the hot spinning process is connected with the first pipe joint, and the hole generated by the hot spinning process is utilized, so that the manpower and material resources for opening the hole are saved, the production efficiency is improved, and the method has a good application prospect.
Furthermore, the outer diameter of the container cylinder is 160-350 mm, the wall thickness is less than or equal to 30mm, the container cylinder is easy to extrude after being heated, and the strength of the formed equipment is reliable.
Furthermore, the thickness of the elliptic necking end socket is 90% -100% of the wall thickness of the header cylinder, and the influence on strength due to excessively weak parts is avoided.
Furthermore, the circle center of the necking hole is positioned on the axis of the container barrel, the process is easy to control, the shape in the hole is regular, and welding plugging is facilitated.
Further, the diameter of the hot-spinning compression opening is 20 +/-5 mm, so that the process is easy to control, and the first pipe joint is convenient to assemble.
Drawings
FIG. 1 is a schematic view of the overall structure of the header with an oval necking head of the present invention;
fig. 2 is a prior art header with end caps.
In the figure: 1-a header cylinder, 2-an elliptical necking end socket, 3-a necking hole, 4-a first pipe joint and 5-a second pipe joint.
Detailed Description
The invention will be described in further detail with reference to the following drawings and specific examples, which are intended to illustrate and not to limit the invention:
as shown in fig. 1, the utility model discloses a header with oval throat head, including the header barrel 1, the one end hot spin forming of header barrel 1 has oval throat head 2, the external diameter of header barrel 1 generally selects 160 ~ 350mm, the wall thickness is less than or equal to 30mm, on the one hand this size specification is easy to the header barrel heat back extrusion, on the other hand guarantees the equipment intensity after the shaping reliable; the thickness of the elliptic necking end socket 2 is generally designed to be 90-100% of the wall thickness of the header cylinder 1, and the influence on strength caused by excessively weak parts is avoided. A necking hole 3 is reserved on the elliptic necking head 2, the necking hole 3 is connected with a first pipe joint 4, and the diameter of the necking hole 3 is smaller than the outer diameter of the first pipe joint 4; the diameter of the hot-spinning compression opening hole 3 is generally 20 +/-5 mm, so that the process is easy to control, and the hot-spinning compression opening hole is convenient to assemble with a first pipe joint; the circle center of the necking hole 3 is positioned on the axis of the header cylinder 1, the process is easy to control, and the shape in the hole is regular, so that the welding and plugging are convenient. The header cylinder 1 is connected with a plurality of second pipe joints 5.
The manufacturing method of the header with the oval necking end socket comprises the following steps:
step 1: cutting the sealing end of the header cylinder 1 by using a large-scale band sawing machine to ensure that the cutting surface is flat and perpendicular to the axis of the header cylinder 1;
step 2: carrying out high-frequency electromagnetic heating on the sealing end of the header cylinder body 1 to 800-900 ℃, pushing and pressing the sealing end of the rotating header cylinder body 1 by using a roller until the necking hole 3 reaches a preset size, shaping the extruded elliptical necking end enclosure 2, wherein the front end extrusion surface of the extruded elliptical necking end enclosure 2 is an arc surface, and the side surface extrusion surface is a plane flush with the header cylinder body 1;
and step 3: and (3) machining and drilling the elliptic necking seal heads 2 and the header cylinder body 1, and welding the first pipe joint 4 and the second pipe joint 5 by adopting automatic welding or manual welding.
The invention is further explained below with reference to the processing steps of a specific processing example:
step 1: cutting one end of the container cylinder 1 made of 20G materials and having the specification of phi 250 multiplied by 20 by using a large-scale band saw, wherein the section is flat and vertical to the axis of the container cylinder 1;
step 2: the end of the container barrel 1 is heated to 800-900 ℃ by high-frequency electromagnetic heating, the roller is used for pushing and pressing the end of the rotating container barrel 1 until the end, the necking hole 3 is about 20mm, the front end extrusion surface of the extruded elliptic necking end socket 2 is an arc surface, and the side extrusion surface is a plane.
And step 3: and (3) machining and drilling the elliptical necking end socket 2 and the header cylinder body 1 according to a drawing, and welding the pipe joints to the elliptical necking end socket 2 and the header cylinder body 1 by using automatic welding or manual welding.
It should be noted that the above description is only a part of the embodiments of the present invention, and equivalent changes made by the system described in the present invention are all included in the protection scope of the present invention. The technical field of the present invention can be replaced by other embodiments described in a similar manner, without departing from the structure of the present invention or exceeding the scope defined by the claims, which belong to the protection scope of the present invention.
Claims (6)
1. The utility model provides a collection case with oval throat head, its characterized in that includes collection case barrel (1), and the one end hot spin forming of collection case barrel (1) has oval throat head (2), leaves throat hole (3) on oval throat head (2), and throat hole (3) are connected with first coupling (4), are connected with a plurality of second couplings (5) on collection case barrel (1).
2. The header with the elliptic necking head according to claim 1, wherein the outer diameter of the header cylinder (1) is 160-350 mm, and the wall thickness is less than or equal to 30 mm.
3. A header with an elliptical necked head according to claim 1, characterized in that the thickness of the elliptical necked head (2) is 90% to 100% of the wall thickness of the header body (1).
4. A header with an elliptical necking head according to claim 1, characterized in that the center of the necking hole (3) is located on the axis of the header tank (1).
5. A header with an elliptical necking head according to claim 1, wherein the diameter of the thermo-rotary compression orifice (3) is 20 ± 5 mm.
6. A header with an elliptical necking head according to claim 1, wherein the diameter of the necking hole (3) is smaller than the outer diameter of the first pipe joint (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022561688.4U CN213510867U (en) | 2020-11-09 | 2020-11-09 | Collection case with oval throat head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022561688.4U CN213510867U (en) | 2020-11-09 | 2020-11-09 | Collection case with oval throat head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213510867U true CN213510867U (en) | 2021-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022561688.4U Active CN213510867U (en) | 2020-11-09 | 2020-11-09 | Collection case with oval throat head |
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| CN (1) | CN213510867U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302789A (en) * | 2020-11-09 | 2021-02-02 | 西安热工研究院有限公司 | Header with elliptical necking end socket and manufacturing method thereof |
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2020
- 2020-11-09 CN CN202022561688.4U patent/CN213510867U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302789A (en) * | 2020-11-09 | 2021-02-02 | 西安热工研究院有限公司 | Header with elliptical necking end socket and manufacturing method thereof |
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