CN105032876A - Backwash clamp used for fuel manifold nozzle - Google Patents
Backwash clamp used for fuel manifold nozzle Download PDFInfo
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- CN105032876A CN105032876A CN201510324037.4A CN201510324037A CN105032876A CN 105032876 A CN105032876 A CN 105032876A CN 201510324037 A CN201510324037 A CN 201510324037A CN 105032876 A CN105032876 A CN 105032876A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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Abstract
The invention discloses a backwash clamp used for a fuel manifold nozzle. The problems that in the prior art, a leather case is connected with the nozzle and is prone to falling; a tubular structure in which a ball is matched with a conical surface is connected with the nozzle, and the through connection function can not be achieved; and the outer surface of the nozzle is a smooth surface but not a threaded surface, and fixing can not be carried out through a clamp are mainly solved. The backwash clamp used for the fuel manifold nozzle comprises a plurality of sector-shaped body connecting cylinders, a hollow connecting sleeve and an adapter. The lateral sides of the multiple sector-shaped body connecting cylinders are sequentially connected in an end-to-end manner to form a cylindrical connecting cylinder. The outer wall of the cylindrical connecting cylinder is sleeved with a sleeve. The hollow connecting sleeve is clamped into the cylindrical connecting cylinder in a connected manner. One end of a connector is fixed into the hollow connecting sleeve. A first hollow cylinder, a second hollow cylinder, a third hollow cylinder, a fourth hollow cylinder and a fifth hollow cylinder are sequentially arranged from the top to the bottom of the cylindrical connecting cylinder. The diameter of the first hollow cylinder is equal to the diameter of the third hollow cylinder. By means of the scheme, the backwash clamp achieves the aims that falling is not prone to occurrence, and through connection can be achieved.
Description
Technical field
The present invention relates to a kind of fixture for nozzle rinse, specifically, relate to a kind of for fuel manifold nozzle backwash fixture.
Background technology
RD-93 engine is the power set of FC-1 " brave dragon " fighter plane, the thrust type h type engine h of the high thrust-weight ratio improved on the basis of former RD-33 engine (for meter Ge-29 fighter plane) by Russian Ke Limofu design bureau; RD-93 engine intermediate fuel oil house steward is used for supplying the fuel oil regulating engine required under various condition of work and duty, to ensure that engine health reliably works and gives full play to its performance.Fuel manifold is the annex connecting pump and each nozzle in fuel system, and the fuel oil after supercharging is vaporificly spray into combustion chamber by nozzle, so as with air mixed combustion.What the nozzle of RD-93 engine adopted is rotarytype injector, nozzle is built with a cyclone, its operation principle is that fuel oil enters spin chamber from tangential hole, rotary motion is rapidly done in spin chamber, fuel oil is after spray orifice ejection, because of the effect by inertia force and air impact, be broken into countless tiny oil droplet, thus obtain good atomizing effect.When engine works under different rotating speeds, required oil mass alters a great deal, fuel delivery during large rotating speed, general larger than fuel delivery during little rotating speed tens to tens times, in order to ensure atomization quality, fuel oil minimum pressure is devised before nozzle, nozzle bore must be tiny and even, more can not occur the phenomenon of blocking.
Fuel manifold nozzle operation, bottom the annular flame tube of combustion chamber, due to the working environment of fuel qualities and high temperature, works long hours and is easy to form carbon distribution, these carbon distributions can cause the blocking of fuel nozzle, after spray nozzle clogging, the atomization quality of fuel oil can decline, and result can cause fuel oil cannot Thorough combustion, reduce the overall performance of engine, moreover can nozzle angle be changed, cause linear jet, cause localized hyperthermia, turbo blade behind ablation combustion chamber, serious meeting causes aircraft accident.
Take the method for backwash fuel manifold to be got rid of when the flow of fuel manifold nozzle is less than required value; From 24 the nozzle oil-feeds of whole circle, from main and primary fuel house steward is fuel-displaced, form back flush, generally adopt leather sheath now, bulb is connected nozzle and oil inlet pipe with the tubular structure of cone match, and there is following problem and be enclosed within nozzle with leather hose under the pressure of 5.88MPa, leather sheath easily comes off; Bulb is connected nozzle with the tubular structure of cone match cannot realize signaling transfer point; And nozzle outer surface is light face, non-threaded, fixture cannot be fixed.
Summary of the invention
The problem to be solved in the present invention is that leather sheath connects nozzle and easily comes off, and bulb is connected nozzle with the tubular structure of cone match cannot realize signaling transfer point and nozzle outer surface is light face, and non-threaded, fixture cannot be fixed.
In order to solve the problem, the invention provides following technical scheme:
A kind of fuel manifold nozzle backwash fixture that is used for comprises multiple segment connecting cylinder, hollow adapter sleeve and adapter; The side of multiple segment connecting cylinder is connected to form cylinder connection cylinder successively from beginning to end, and on the outer wall of cylinder connection cylinder, cover has sleeve, and hollow adapter sleeve is connected in cylinder connection cylinder, and one end of connector is fixed in hollow adapter sleeve.
Particularly, cylinder connection cylinder is provided with the first hollow cylinder, the second hollow cylinder, the 3rd hollow cylinder, the 4th hollow cylinder, the 5th hollow cylinder from the top to the bottom successively; The diameter of the second hollow cylinder, the diameter of the 4th hollow cylinder, the diameter of the first hollow cylinder, the diameter of the 5th hollow cylinder successively decrease successively, and the diameter of the first hollow cylinder equals the diameter of the 3rd hollow cylinder.
Particularly, cylinder connection drum outer wall bottom is provided with the first annular boss, and the bottom of sleeve is connected with the top contact of the first annular boss.
Particularly, hollow adapter sleeve outer wall is provided with the second annular boss and the 3rd annular boss; Second annular boss is connected in the second hollow cylinder, and the bottom of the 3rd annular boss is connected with the top contact of cylinder connection cylinder, and the diameter of the 3rd annular boss is greater than the diameter of the first hollow cylinder.
More specifically, the bottom of adapter is positioned at the 4th hollow cylinder, and on the adapter being positioned at the 4th hollow cylinder, cover has packing ring.
More specifically, segment connecting cylinder is two; Namely segment connecting cylinder is semicylinder connecting cylinder.
More specifically, segment connecting cylinder, the first hollow cylinder, the second hollow cylinder, the 3rd hollow cylinder, the 4th hollow cylinder, the 5th hollow cylinder are all made of copper.
Compared with prior art, the present invention has following beneficial effect:
(1) the present invention utilizes the argon arc welding gap of 2mm irregularity of having an appointment between nozzle and matrix to adopt two segment connecting cylinders to be installed separately, and decreases installation difficulty of the present invention, and makes to connect between each parts more closely reliable.
(2) bottom of middle sleeve of the present invention is connected with the top contact of the first boss, ensure that sleeve does not glide, and makes the present invention's safety and reliability in use; It is tightr that packing ring makes adapter be connected with nozzle.
(3) the second annular boss on hollow core adapter sleeve of the present invention is connected in the second hollow cylinder, and the bottom of the 3rd annular boss is connected with the top contact of cylinder connection cylinder; Hollow adapter sleeve is made to be connected safety and reliability with cylinder connection cylinder, difficult drop-off.
(4) structure of the present invention is simple, and the material of use is copper, rubber and 45# steel, and easy to process, cost is lower; Segment connecting cylinder, the first hollow cylinder, the second hollow cylinder, the 3rd hollow cylinder, the 4th hollow cylinder, the 5th hollow cylinder are all made of copper; Avoid the situation scratching parts when mounted.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1.
Fig. 2 is the front view of segment connecting cylinder.
Fig. 3 is the top view of segment connecting cylinder.
Fig. 4 is the structural representation of hollow adapter sleeve.
Fig. 5 is the syndeton schematic diagram of nozzle and matrix.
In above-mentioned accompanying drawing, the component names that Reference numeral is corresponding is as follows:
1-sleeve, 2-segment connecting cylinder, 3-first annular boss, 4-first hollow cylinder, 5-second hollow cylinder, 6-the 3rd hollow cylinder, 7-the 4th hollow cylinder, 8-the 5th hollow cylinder, the hollow adapter sleeve of 9-, 10-second annular boss, 11-the 3rd annular boss, 12-adapter, 13-packing ring, 14-nozzle, 15-matrix.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described, and embodiments of the present invention include but not limited to the following example.
Embodiment
As shown in Figures 1 to 4, two segment connecting cylinders 2, hollow adapter sleeve 9 and adapter 12 is comprised for fuel manifold nozzle backwash fixture; The side of two segment connecting cylinders 2 is connected to form cylinder connection cylinder successively from beginning to end; On the outer wall of cylinder connection cylinder, cover has sleeve 1, and hollow adapter sleeve 9 is connected in cylinder connection cylinder, and one end of connector is fixed in hollow adapter sleeve 9; Cylinder connection cylinder is provided with the first hollow cylinder 5, second hollow cylinder 5, the 3rd hollow cylinder 6, the 4th hollow cylinder 7, the 5th hollow cylinder 8 from the top to the bottom successively, the diameter of the second hollow cylinder 5, the diameter of the 4th hollow cylinder 7, the diameter of the first hollow cylinder 5, the diameter of the 5th hollow cylinder 8 successively decrease successively, and the diameter of the first hollow cylinder 5 equals the diameter of the 3rd hollow cylinder 6; Cylinder connection drum outer wall bottom is provided with the first annular boss 3, and the bottom of sleeve 1 is connected with the top contact of the first annular boss 3.
Hollow adapter sleeve 9 outer wall is provided with the second annular boss 10 and the 3rd annular boss 11; Second annular boss 10 is connected in the second hollow cylinder 5, and the bottom of the 3rd annular boss 11 is connected with the top contact of cylinder connection cylinder, and the diameter of the 3rd annular boss 11 is greater than the diameter of the first hollow cylinder 5.
The bottom of adapter 12 is positioned at the 4th hollow cylinder 7, and on the adapter 12 being positioned at the 4th hollow cylinder 7, cover has packing ring 13; Segment connecting cylinder 2 is two; Namely segment connecting cylinder 2 is semicylinder connecting cylinder; Segment connecting cylinder 2, first hollow cylinder 5, second hollow cylinder 5, the 3rd hollow cylinder 6, the 4th hollow cylinder 7, the 5th hollow cylinder 8 are all made of copper; Avoid the situation scratching parts when mounted.
As shown in Figures 1 to 5, installation instructions, the argon arc welding gap of 2mm irregularity of having an appointment between nozzle 14 and matrix 15, in a segment connecting cylinder 2, make argon arc welding gap be positioned at half the 5th hollow cylinder 8, nozzle 14 is positioned at half the 4th hollow cylinder 7; Be connected in the second hollow cylinder 5 by the second annular boss 10 on hollow adapter sleeve 9 again, the bottom of the 3rd annular boss 11 is connected with the top contact of cylinder connection cylinder; Hollow adapter sleeve 9 is made to be connected safety and reliability with cylinder connection cylinder; Be fixed in hollow adapter sleeve 9 one end of connector, and be connected with nozzle 14 bottom it, adapter 12 is communicated with nozzle 14, and packing ring 13 makes adapter 12 be connected tightr with nozzle 14; Another segment connecting cylinder 2 is installed face-to-face with the segment connecting cylinder 2 installed; Cover upper bush 1, makes the bottom of sleeve 1 be connected with the top contact of the first boss, ensure that sleeve 1 does not glide, make the present invention's safety and reliability in use; Adopt two segment connecting cylinders 2 to be installed separately in above-mentioned installation process, decrease installation difficulty of the present invention, and make to connect between each parts more closely reliable.
During use, the present invention is arranged on nozzle 14, oil enter nozzle 14 from adapter 12, finally from main fuel pipe and primary fuel pipe fuel-displaced, formed back flush.
Economic and Efficiency Analysis of the present invention
Structure of the present invention is simple, and the material of use is copper, rubber and 45# steel, and easy to process, cost is lower; Its mid-early stage investigation design cost 60,000 yuan, processing and manufacturing expense 20,000 yuan, equipment acceptance testing expenses 20,000 yuan, amount to cost 100,000 yuan.
Service condition according to RD-93 engine is added up, and evaluates after every platform engine uses and directly changes nozzle without flushing, obtain cost and amount to RMB 80,000 yuan; Add each cost of labor, amount to the maintenance cost 250,000 yuans of every platform engine; Use flooding nozzle of the present invention then can save 250,000 yuans.
In addition, due to application of the present invention, the cycle of engine when returning repair in shop reason can be reduced, and a large amount of save repair cost; Therefore, calculate according to current 50 engines of being on active service in Pakistan, the present invention can be cost-saving 1,250 ten thousand yuans of company, for company brings great economic benefit.
At present, domestic certain model engine main fuel house steward nozzle is consistent with RD-93 engine, and the requirement of its backwash is also identical; Therefore, main fuel house steward backwash fixture extends on the engine of this model, improves the reliability of this engine, simultaneously for enterprise brings larger economic benefit and social benefit.
According to above-described embodiment, just the present invention can be realized well.What deserves to be explained is; under prerequisite based on said structure design, for solving same technical problem, even if some making on the invention are without substantial change or polishing; the essence of the technical scheme adopted is still the same with the present invention, therefore it also should in protection scope of the present invention.
Claims (7)
1. for a fuel manifold nozzle backwash fixture, it is characterized in that: comprise multiple segment connecting cylinder (2), hollow adapter sleeve (9) and adapter (12); The side of multiple segment connecting cylinder (2) is connected to form cylinder connection cylinder successively from beginning to end, on the outer wall of cylinder connection cylinder, cover has sleeve (1), hollow adapter sleeve (9) is connected in cylinder connection cylinder, and one end of connector is fixed in hollow adapter sleeve (9).
2. according to claim 1 for fuel manifold nozzle backwash fixture, it is characterized in that: cylinder connection cylinder is provided with the first hollow cylinder (4), the second hollow cylinder (5), the 3rd hollow cylinder (6), the 4th hollow cylinder (7), the 5th hollow cylinder (8) from the top to the bottom successively; The diameter of the second hollow cylinder (5), the diameter of the 4th hollow cylinder (7), the diameter of the first hollow cylinder (4), the diameter of the 5th hollow cylinder (8) successively decrease successively, and the diameter of the first hollow cylinder (4) equals the diameter of the 3rd hollow cylinder (6).
3. according to claim 2 for fuel manifold nozzle backwash fixture, it is characterized in that: cylinder connection drum outer wall bottom is provided with the first annular boss (3), the bottom of sleeve (1) is connected with the top contact of the first annular boss (3).
4. according to claim 3 for fuel manifold nozzle backwash fixture, it is characterized in that: hollow adapter sleeve (9) outer wall is provided with the second annular boss (10) and the 3rd annular boss (11); Second annular boss (10) is connected in the second hollow cylinder (5), the bottom of the 3rd annular boss (11) is connected with the top contact of cylinder connection cylinder, and the diameter of the 3rd annular boss (11) is greater than the diameter of the first hollow cylinder (4).
5. according to claim 4 for fuel manifold nozzle backwash fixture, it is characterized in that: the bottom of adapter (12) is positioned at the 4th hollow cylinder (7), the upper cover of adapter (12) being positioned at the 4th hollow cylinder (7) has packing ring (13).
6. according to claim 5 for fuel manifold nozzle backwash fixture, it is characterized in that: segment connecting cylinder (2) is two.
7. according to claim 5 for fuel manifold nozzle backwash fixture, it is characterized in that: segment connecting cylinder (2), the first hollow cylinder (4), the second hollow cylinder (5), the 3rd hollow cylinder (6), the 4th hollow cylinder (7), the 5th hollow cylinder (8) are all made of copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510324037.4A CN105032876B (en) | 2015-06-13 | 2015-06-13 | Fixture is backwashed for fuel manifold nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510324037.4A CN105032876B (en) | 2015-06-13 | 2015-06-13 | Fixture is backwashed for fuel manifold nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105032876A true CN105032876A (en) | 2015-11-11 |
| CN105032876B CN105032876B (en) | 2017-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510324037.4A Active CN105032876B (en) | 2015-06-13 | 2015-06-13 | Fixture is backwashed for fuel manifold nozzle |
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| CN (1) | CN105032876B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105397680A (en) * | 2015-12-08 | 2016-03-16 | 成都发动机（集团）有限公司 | Tool clamp for aircraft engine cyclone atomization test |
| CN105973545A (en) * | 2016-07-11 | 2016-09-28 | 贵州凯阳航空发动机有限公司 | Engine I-th fulcrum detection clamp and detection system composed thereof |
| CN110425043A (en) * | 2018-12-04 | 2019-11-08 | 西安成立航空制造有限公司 | A kind of fuel nozzle component and method for welding with general pipeline |
| CN114029536A (en) * | 2021-12-15 | 2022-02-11 | 中国航发动力股份有限公司 | Clamp and method for surfacing layers on two side surfaces of boss of flame tube sleeve ring in plate welding |
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| FR2282298A1 (en) * | 1973-04-12 | 1976-03-19 | Lechler Apparatebau Kg | Nozzle to pipe end sealing system - has pins fitting in grooves in nozzle body and pipe recess |
| CN1573192A (en) * | 2003-06-18 | 2005-02-02 | T&S黄铜和金铜产品公司 | Faucet assembly with easy-install pre-rinse unit mechanism |
| CN2839788Y (en) * | 2005-09-20 | 2006-11-22 | 卢启隶 | Fast hose joint |
| CN2856676Y (en) * | 2005-09-27 | 2007-01-10 | 卢启隶 | Valve joint with self lock |
| CN103672232A (en) * | 2013-12-23 | 2014-03-26 | 安徽合一电气科技有限公司 | Special-shaped water nozzle converter structure |
| CN204934169U (en) * | 2015-06-13 | 2016-01-06 | 贵州凯阳航空发动机有限公司 | For fuel manifold nozzle backwash fixture |
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2015
- 2015-06-13 CN CN201510324037.4A patent/CN105032876B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2282298A1 (en) * | 1973-04-12 | 1976-03-19 | Lechler Apparatebau Kg | Nozzle to pipe end sealing system - has pins fitting in grooves in nozzle body and pipe recess |
| CN1573192A (en) * | 2003-06-18 | 2005-02-02 | T&S黄铜和金铜产品公司 | Faucet assembly with easy-install pre-rinse unit mechanism |
| CN2839788Y (en) * | 2005-09-20 | 2006-11-22 | 卢启隶 | Fast hose joint |
| CN2856676Y (en) * | 2005-09-27 | 2007-01-10 | 卢启隶 | Valve joint with self lock |
| CN103672232A (en) * | 2013-12-23 | 2014-03-26 | 安徽合一电气科技有限公司 | Special-shaped water nozzle converter structure |
| CN204934169U (en) * | 2015-06-13 | 2016-01-06 | 贵州凯阳航空发动机有限公司 | For fuel manifold nozzle backwash fixture |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105397680A (en) * | 2015-12-08 | 2016-03-16 | 成都发动机（集团）有限公司 | Tool clamp for aircraft engine cyclone atomization test |
| CN105973545A (en) * | 2016-07-11 | 2016-09-28 | 贵州凯阳航空发动机有限公司 | Engine I-th fulcrum detection clamp and detection system composed thereof |
| CN110425043A (en) * | 2018-12-04 | 2019-11-08 | 西安成立航空制造有限公司 | A kind of fuel nozzle component and method for welding with general pipeline |
| CN110425043B (en) * | 2018-12-04 | 2023-11-21 | 西安成立航空制造有限公司 | Fuel nozzle assembly with main pipe and brazing method |
| CN114029536A (en) * | 2021-12-15 | 2022-02-11 | 中国航发动力股份有限公司 | Clamp and method for surfacing layers on two side surfaces of boss of flame tube sleeve ring in plate welding |
| CN114029536B (en) * | 2021-12-15 | 2022-08-12 | 中国航发动力股份有限公司 | Clamp and method for surfacing layers on two side surfaces of boss of flame tube sleeve ring in plate welding |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105032876B (en) | 2017-07-14 |
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Effective date of registration: 20191115 Address after: 550000 No. 1111 Liyang Road, Baiyun District, Guiyang City, Guizhou Province Co-patentee after: China Natioanl Aero-Technology Import & Export Corporation Patentee after: Chinese Hangfa Guizhou Liyang aero Power Co. Ltd. Address before: 550000 room 133, building, Jinyang science and Technology Industrial Park, Guiyang hi tech Zone, Guizhou Patentee before: GUIZHOU KAIYANG AERO-ENGINE CO., LTD. |