CN117267498B - Split assembled type combined externally-added nut connected with flat pipe mouth joint - Google Patents
Split assembled type combined externally-added nut connected with flat pipe mouth joint Download PDFInfo
- Publication number
- CN117267498B CN117267498B CN202311524476.0A CN202311524476A CN117267498B CN 117267498 B CN117267498 B CN 117267498B CN 202311524476 A CN202311524476 A CN 202311524476A CN 117267498 B CN117267498 B CN 117267498B
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- China
- Prior art keywords
- nut
- type combined
- assembled type
- split assembled
- combined nut
- 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.)
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Links
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L43/00—Bends; Siphons
- F16L43/02—Bends; Siphons adapted to make use of special securing means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
Abstract
The invention belongs to the technical field of design, manufacture and use of aero-engine pipelines, and particularly relates to a split assembled type combined external nut connected with a flat pipe nozzle joint, which comprises an upper part of the split assembled type combined nut and a lower part of the split assembled type combined nut, wherein the bottom surface of the upper part of the split assembled type combined nut is connected with the lower part of the split assembled type combined nut, and the upper part of the split assembled type combined nut and the lower part of the split assembled type combined nut are locked through locking pins; the split assembled type combined nut comprises two half nuts, one side of the inner wall of each half nut is provided with a through locking pin hole, and a protruding ring used for pressing a flat nozzle is arranged in each half nut.
Description
Technical Field
The invention belongs to the technical field of design, manufacture and use of aero-engine pipelines, and particularly relates to a split assembled type combined externally-added nut connected with a flat pipe nozzle joint.
Background
When the pipeline of the aeroengine is designed, part of pipeline arrangement is limited by the structural size of a pipe joint or the space size between a part of pipeline joint and a flat pipe nozzle is limited, a common external nut cannot be sleeved into the pipeline in advance and then the flat pipe nozzle is welded, the external nut is fixedly connected by a bolt in the conventional method, but the sealing effect is influenced by the deformation of the flat pipe nozzle when a nut stop pin is inserted in the connecting form frequently, the pressing force between the stop pin and the flat pipe nozzle is uneven when the nut is screwed, the sealing effect of the flat pipe nozzle is poor along with the vibration of the pipeline in the working process of the aeroengine, and the oil leakage fault at the pipeline connecting part of the connecting mode is caused. Therefore, the method for researching the connection of the flat pipe nozzle limited by the structural size and the externally-added nut replaces the traditional bolt fastening method, and the method for solving the problem of oil leakage faults has very important significance in order to ensure the working reliability and stability of the aeroengine.
Disclosure of Invention
Aiming at the technical problems, the invention provides the split assembled type combined externally-added nut connected with the flat pipe mouth joint, which ensures that the pipe joint with the flat pipe mouth is in stress-free assembled connection with the externally-added nut, ensures that the split assembled type combined externally-added nut can uniformly press the end face of the flat pipe mouth when the pipes with the flat pipe mouth joint in the form are connected with each other, ensures the reliability of pipeline connection, and solves the problem of oil leakage fault of the flat pipe mouth joint of the traditional plug pin type fixed externally-added nut.
The split assembled type combined external nut comprises an upper split assembled type combined nut part and a lower split assembled type combined nut part, wherein the bottom surface of the upper split assembled type combined nut part is connected with the lower split assembled type combined nut part, and the upper split assembled type combined nut part and the lower split assembled type combined nut part are locked through locking pins.
The upper part of the split assembled type combined nut comprises two half nuts, a hollow structure is arranged between the two half nuts, one sides of the inner walls of the two half nuts are respectively provided with a through locking pin hole, and the locking pins are inserted into the locking pin holes to fix the upper part of the split assembled type combined nut and the lower part of the split assembled type combined nut.
The upper side of the lower part of the split assembled type combined nut is symmetrically provided with locking wire holes for preventing the whole nut from being connected with other joints.
The inside of half nut is equipped with the bulge loop that is used for compressing tightly flat nozzle.
The outer side of the joint of the half nut at the upper part of the split assembled type combined nut and the lower part of the split assembled type combined nut is provided with a thread structure, and the thread directions of the two half nuts are consistent.
The inside of the lower part of the split assembled type combined nut is of a hollow structure, and the inner side of the lower part of the split assembled type combined nut is provided with internal threads.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention achieves the purpose of the unstressed assembly of the combined externally-added nut and the flat pipe nozzle joint, ensures that the split assembled combined externally-added nut can uniformly press the end face of the flat pipe nozzle when the flat pipe nozzle joint guide pipes with the form are connected with each other, ensures the reliability of pipeline connection, and effectively solves the frequent oil leakage fault of the flat pipe nozzle joint with the traditional bolt-type fixed externally-added nut in the working process of an engine.
2. The structure design method effectively solves the problems that the prior bolt type fixed externally-added nut is easy to cause deformation of a flat pipe nozzle when the nut stop pin is inserted, and the pressing force between the stop pin and the flat pipe nozzle is uneven when the pipeline connecting nut is screwed, and the sealing effect is affected.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic illustration of the connection of the half nut of the present invention to the half structure of the lower portion of the split-mount combination nut;
FIG. 3 is a schematic view of the half nut structure of the upper part of the split-fitting type combination nut of the present invention;
FIG. 4 is a schematic illustration of the connection of the split-fitting combination add-on nut to a flat-nose adapter of the present invention;
in the figure: 1. a half nut; 2. the lower part of the split assembled type combined nut; 3. locking pin holes; 4. a locking pin; 5. a wire locking hole; 6. a protruding ring; 7. a flat nozzle.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples.
As shown in fig. 1-4, a split assembled type combined external nut connected with a flat pipe joint comprises an upper split assembled type combined nut part and a lower split assembled type combined nut part 2, wherein the bottom surface of the upper split assembled type combined nut part is connected with the lower split assembled type combined nut part 2 through a threaded structure, and the upper split assembled type combined nut part and the lower split assembled type combined nut part 2 are locked through a locking pin 4.
The upper part of the split assembled type combined nut comprises two half nuts 1, a hollow structure is arranged between the two half nuts 1, one sides of the inner walls of the two half nuts 1 are respectively provided with a through locking pin hole 3, and a locking pin 4 is inserted into the locking pin holes 3 to fix the upper part of the split assembled type combined nut and the lower part 2 of the split assembled type combined nut.
The upper side of the lower part 2 of the split assembled type combined nut is symmetrically provided with locking wire holes 5 for preventing the whole nut from being connected with other joints.
The half nut 1 is internally provided with a projecting ring 6 for pressing the flat nozzle.
The outer side of the joint of the half nut at the upper part of the split assembled type combined nut and the lower part of the split assembled type combined nut is provided with a thread structure, and the thread directions of the two half nuts 1 are consistent.
The lower part 2 of the split assembled type combined nut is of a hollow structure, and internal threads are arranged on the inner side.
The application method of the split assembled type combined externally-added nut connected with the flat pipe mouth joint comprises the following steps:
step 1: according to the design requirement, selecting a bar with proper specification, and manufacturing two half nuts 1 of the upper part of the split assembled type combined nut and a lower part 2 of the split assembled type combined nut, wherein the lower part 2 of the split assembled type combined nut is of an integral structure, and at the moment, the two half nuts 1 are not provided with locking pin holes;
step 2: after the manufacturing is finished, trial installation is carried out, the upper part of the split assembled type combined nut and the lower part 2 of the split assembled type combined nut are screwed through internal and external threads until the combined sections are completely attached, and at the moment, the locking pin holes 3 are machined on the two half nuts 1, so that the locking pin holes 3 of the two half nuts 1 can be completely symmetrical, and no gap exists when the locking pin 4 is inserted;
step 3: according to the installation schematic diagram of the split assembled combined external nut and the flat pipe mouth joint, the two half nuts 1 at the upper part of the split assembled combined nut are manually clamped on the flat pipe mouth 7, the protruding ring 6 is ensured to press the rear end face of the flat pipe mouth 7, then the lower part 2 of the split assembled combined nut is sleeved from the front end face of the flat pipe mouth 7, and simultaneously, after the upper part of the split assembled combined nut is completely screwed by threads, the locking pin 4 is completely inserted, and the upper part and the lower part of the split assembled combined nut are clamped together by the flat pipe mouth joint 7 by using the locking pin 4, so that the installation is completed.
Claims (2)
1. The split assembled type combined external nut connected with the flat pipe mouth joint is characterized by comprising an upper split assembled type combined nut part and a lower split assembled type combined nut part (2), wherein the bottom surface of the upper split assembled type combined nut part is connected with the lower split assembled type combined nut part (2), and the upper split assembled type combined nut part and the lower split assembled type combined nut part (2) are locked through a locking pin (4);
the upper part of the split assembled type combined nut comprises two half nuts (1), a hollow structure is arranged between the two half nuts (1), one side of the inner wall of each half nut (1) is provided with a through locking pin hole (3), and a locking pin (4) is inserted into each locking pin hole (3) to fix the upper part of the split assembled type combined nut and the lower part (2) of the split assembled type combined nut;
the upper side of the lower part (2) of the split assembled type combined nut is symmetrically provided with a locking wire hole (5) for preventing the whole nut from being loose in connection with other joints;
a protruding ring (6) for pressing the flat nozzle (7) is arranged in the half nut (1);
the outer side of the joint of the half nut (1) at the upper part of the split assembled type combined nut and the lower part (2) of the split assembled type combined nut is provided with a thread structure, and the thread directions of the two half nuts (1) are consistent;
the application method of the combined externally-added nut comprises the following steps:
step 1: according to the design requirement, selecting bars with proper specifications, manufacturing two half nuts (1) of the upper part of the split assembled type combined nut and the lower part (2) of the split assembled type combined nut, wherein the lower part (2) of the split assembled type combined nut is of an integrated structure, and at the moment, the two half nuts (1) are not provided with locking pin holes (3) at first;
step 2: after manufacturing, trial installation is carried out, the upper part of the split assembled type combined nut and the lower part (2) of the split assembled type combined nut are screwed through internal and external threads until the combined sections are completely attached, and at the moment, the locking pin holes (3) are machined on the two half nuts (1), so that the locking pin holes (3) of the two half nuts (1) can be completely symmetrical, and no gap exists when the locking pin (4) is inserted;
step 3: according to the installation schematic diagram of the split assembled type combined external nut and the flat pipe mouth joint, the two half nuts (1) at the upper part of the split assembled type combined nut are manually clamped on the flat pipe mouth (7), the protruding ring (6) is ensured to press the rear end face of the flat pipe mouth (7), then the lower part (2) of the split assembled type combined nut is sleeved on the front end face of the flat pipe mouth (7), and simultaneously, after the lower part of the split assembled type combined nut is completely screwed with the upper part of the split assembled type combined nut through threads, the locking pin (4) is completely inserted, and the upper part and the lower part of the split assembled type combined nut are clamped on the flat pipe mouth joint (7) together by the locking pin (4) to complete the installation.
2. The split assembled type combined external nut connected with the flat pipe joint according to claim 1, wherein the lower part (2) of the split assembled type combined nut is internally of a hollow structure, and the inner side of the split assembled type combined nut is provided with internal threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311524476.0A CN117267498B (en) | 2023-11-16 | 2023-11-16 | Split assembled type combined externally-added nut connected with flat pipe mouth joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311524476.0A CN117267498B (en) | 2023-11-16 | 2023-11-16 | Split assembled type combined externally-added nut connected with flat pipe mouth joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117267498A CN117267498A (en) | 2023-12-22 |
| CN117267498B true CN117267498B (en) | 2024-02-13 |
Family
ID=89204868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311524476.0A Active CN117267498B (en) | 2023-11-16 | 2023-11-16 | Split assembled type combined externally-added nut connected with flat pipe mouth joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117267498B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2249343Y (en) * | 1996-04-25 | 1997-03-12 | 曹泽宏 | Threading-less pipe joint |
| CN202561304U (en) * | 2012-04-20 | 2012-11-28 | 株洲科盟车辆配件有限责任公司 | Self-sealing pipe connector |
| KR101509950B1 (en) * | 2013-10-24 | 2015-04-07 | 현대자동차주식회사 | Urea apparatus for vehicle |
| CN105221865A (en) * | 2014-06-13 | 2016-01-06 | 陕西飞机工业（集团）有限公司 | A kind of aircraft oxygen system sealing linkage structure |
| CN110886761A (en) * | 2019-12-25 | 2020-03-17 | 安顺中安安装工程有限公司 | Screw thread anti-loosening device |
| CN210686598U (en) * | 2018-09-03 | 2020-06-05 | 松下知识产权经营株式会社 | Split nut, split bolt, bolt-nut structure, and piping structure |
| CN219755060U (en) * | 2023-05-30 | 2023-09-26 | 宁波领奇五金实业有限公司 | Detachable combined nut |
-
2023
- 2023-11-16 CN CN202311524476.0A patent/CN117267498B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2249343Y (en) * | 1996-04-25 | 1997-03-12 | 曹泽宏 | Threading-less pipe joint |
| CN202561304U (en) * | 2012-04-20 | 2012-11-28 | 株洲科盟车辆配件有限责任公司 | Self-sealing pipe connector |
| KR101509950B1 (en) * | 2013-10-24 | 2015-04-07 | 현대자동차주식회사 | Urea apparatus for vehicle |
| CN105221865A (en) * | 2014-06-13 | 2016-01-06 | 陕西飞机工业（集团）有限公司 | A kind of aircraft oxygen system sealing linkage structure |
| CN210686598U (en) * | 2018-09-03 | 2020-06-05 | 松下知识产权经营株式会社 | Split nut, split bolt, bolt-nut structure, and piping structure |
| CN110886761A (en) * | 2019-12-25 | 2020-03-17 | 安顺中安安装工程有限公司 | Screw thread anti-loosening device |
| CN219755060U (en) * | 2023-05-30 | 2023-09-26 | 宁波领奇五金实业有限公司 | Detachable combined nut |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117267498A (en) | 2023-12-22 |
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