CN105032876B - Fixture is backwashed for fuel manifold nozzle - Google Patents
Fixture is backwashed for fuel manifold nozzle Download PDFInfo
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- CN105032876B CN105032876B CN201510324037.4A CN201510324037A CN105032876B CN 105032876 B CN105032876 B CN 105032876B CN 201510324037 A CN201510324037 A CN 201510324037A CN 105032876 B CN105032876 B CN 105032876B
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- cylinder
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- hollow cylinder
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- nozzle
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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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- Fuel-Injection Apparatus (AREA)
Abstract
It is used for fuel manifold nozzle the invention discloses one kind and backwashes fixture, mainly solve the connection nozzle of leather sheath present in prior art easy to fall off, bulb and the tubular structure of cone match connection nozzle can not realize that signaling transfer point and nozzle outer surface are smooth surfaces, non-threaded face, the problem of fixture can not be fixed.This, which is used for fuel manifold nozzle backwash fixture, includes multiple segment connecting cylinders, hollow adapter sleeve and adapter；The side of multiple segment connecting cylinders, which is sequentially connected from head to tail to form on cylinder connecting cylinder, the outer wall of cylinder connecting cylinder, is cased with sleeve, and hollow adapter sleeve is connected in cylinder connecting cylinder, and one end of adapter is fixed in hollow adapter sleeve；Cylinder connecting cylinder is sequentially 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, and the diameter of the first hollow cylinder is equal to the diameter of the 3rd hollow cylinder.By such scheme, invention achieves purpose that is difficult for drop-off and can transferring.
Description
Technical field
It is to be related to one kind to be used for fuel manifold nozzle specifically the present invention relates to a kind of fixture for nozzle rinse
Backwash fixture.
Background technology
RD-93 engines are the power set of FC-1 " brave dragon " fighter plane, by Russian Ke Limofu design bureaus in former RD-
The thrust type h type engine h for the high thrust-weight ratio that 33 engines are improved on the basis of (being used for meter Ge -29 fighter planes)；RD-93
Engine intermediate fuel oil house steward is used for supplying fuel oil of the regulation engine needed under various conditions of work and working condition, to ensure
Engine health reliably works and gives full play to its performance.Fuel manifold is the attached of connection pump and each nozzle in fuel system
Part, nozzle by the fuel oil after supercharging be in vaporific penetrating combustion chamber, so as to air mixed combustion.The nozzle of RD-93 engines is adopted
It is rotarytype injector, nozzle is built with a cyclone, and its operation principle is that fuel oil enters spin chamber from tangential hole, in rotation
Rotary motion rapidly is done in flow chamber, fuel oil, because being acted on by inertia force and air impact, is broken into countless after spray orifice ejection
Tiny oil droplet, so as to obtain good atomizing effect.The change of engine required oil mass when being worked under different rotating speeds is very big,
Fuel delivery during big rotating speed, fuel delivery when typically than small rotating speed is big more than ten to tens times, in order to ensure before atomization quality, nozzle
Fuel oil minimum pressure is devised, nozzle bore must be tiny and uniform, the phenomenon blocked can not occurs.
Fuel manifold nozzle operation is in the annular flame tube bottom of combustion chamber, due to fuel qualities and the building ring of high temperature
Border, is worked long hours and is readily formed carbon distribution, and these carbon distributions can be caused after the blocking of fuel nozzle, spray nozzle clogging, the mist of fuel oil
Changing quality can decline, and fuel oil as a result can be caused not burn fully, reduce the overall performance of engine, furthermore can change nozzle angle
Degree, causes linear jet, causes the turbo blade behind localized hyperthermia, ablation combustion chamber, and serious meeting triggers aircraft accident.
The method of backwash fuel manifold is taken to be excluded when the flow of fuel manifold nozzle is less than required value；From whole
24 nozzle oil-feeds are enclosed, it is fuel-displaced from main and primary fuel house steward, form back flush, typically now using leather sheath, bulb and the conical surface
, there is problems with and be enclosed within 5.88MPa pressure with leather hose on nozzle in the tubular structure connection nozzle and oil inlet pipe of cooperation,
Leather sheath is easy to fall off；Bulb and the tubular structure of cone match connection nozzle can not realize signaling transfer point；And nozzle outer surface is light
Face, non-threaded face, fixture can not be fixed.
The content of the invention
The problem to be solved in the present invention is that leather sheath connection nozzle is easy to fall off, the tubular structure connection spray of bulb and cone match
Mouth can not realize signaling transfer point and nozzle outer surface is smooth surface, and non-threaded face, fixture can not be fixed.
In order to solve the above problems, the present invention provides following technical scheme：
One kind, which is used for fuel manifold nozzle backwash fixture, includes multiple segment connecting cylinders, hollow adapter sleeve and switching
Head；The side of multiple segment connecting cylinders, which is sequentially connected from head to tail to form on cylinder connecting cylinder, the outer wall of cylinder connecting cylinder, to be covered
There is sleeve, hollow adapter sleeve is connected in cylinder connecting cylinder, one end of adapter is fixed in hollow adapter sleeve.
Specifically, cylinder connecting cylinder be sequentially provided with the first hollow cylinder from the top to the bottom, it is the second hollow cylinder, the 3rd hollow
Cylinder, the 4th hollow cylinder, the 5th hollow cylinder；The diameter of second hollow cylinder, the diameter of the 4th hollow cylinder, the diameter of the first hollow cylinder,
The diameter of 5th hollow cylinder successively decreases successively, and the diameter of the first hollow cylinder is equal to the diameter of the 3rd hollow cylinder.
Specifically, cylinder connection drum outer wall bottom is provided with first annular boss, the bottom of sleeve and first annular boss
Top contact connection.
Specifically, hollow adapter sleeve outer wall is provided with the second annular boss and the 3rd annular boss；Second convex annular decometer
It is connected in the second hollow cylinder, the bottom of the 3rd annular boss is connected with the top contact of cylinder connecting cylinder, the 3rd annular boss
The diameter with diameter greater than the first hollow cylinder.
More specifically, the bottom of adapter is located in the 4th hollow cylinder, it is cased with the adapter in the 4th hollow cylinder
Packing ring.
More specifically, segment connecting cylinder is two；I.e. 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,
Five hollow cylinders are made of copper.
Compared with prior art, the invention has the advantages that：
(1) present invention, which is utilized, has the irregular argon arc welding gaps of about 2mm using two segments between nozzle and matrix
Connecting cylinder is installed separately, and reduces the installation difficulty of the present invention, and makes to connect closer reliability between each part.
(2) the top contact connection of the bottom of middle sleeve of the present invention and first boss, it is ensured that sleeve does not glide, and sends out this
Bright safety and reliability when in use；Packing ring makes adapter be connected closer with nozzle.
(3) the second annular boss in the present invention on hollow adapter sleeve is connected in the second hollow cylinder, the 3rd annular boss
Bottom be connected with the top contact of cylinder connecting cylinder；Hollow adapter sleeve is set to be connected safety and reliability with cylinder connecting cylinder,
It is difficult for drop-off.
(4) present invention is simple in construction, and the material used is copper, rubber and 45# steel, and easy to process, cost is relatively low；Segment
Connecting cylinder, the first hollow cylinder, the second hollow cylinder, the 3rd hollow cylinder, the 4th hollow cylinder, the 5th hollow cylinder are made of copper；Avoid
The situation of part is scratched when mounted.
Brief description of the drawings
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 attachment structure schematic diagram of nozzle and matrix.
In above-mentioned accompanying drawing, the corresponding component names of reference are as follows：
1- sleeves, 2- segment connecting cylinders, the first annular boss of 3-, the hollow cylinders of 4- first, the hollow cylinders of 5- second, 6- the 3rd
Hollow cylinder, the hollow cylinders of 7- the 4th, the hollow cylinders of 8- the 5th, the hollow adapter sleeves of 9-, the annular boss of 10- second, the convex annulars of 11- the 3rd
Platform, 12- adapters, 13- packing rings, 14- nozzles, 15- matrixes.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples, and embodiments of the present invention include but is not limited to
The following example.
Embodiment
As shown in Figures 1 to 4, two segment connecting cylinders 2, hollow companies are included for fuel manifold nozzle backwash fixture
Female connector 9 and adapter 12；The side of two segment connecting cylinders 2 is sequentially connected from head to tail to form cylinder connecting cylinder；Cylinder connects
Connect and be cased with the outer wall of cylinder sleeve 1, hollow adapter sleeve 9 is connected in cylinder connecting cylinder, one end of adapter is fixed on hollow
In adapter sleeve 9；Cylinder connecting cylinder is sequentially provided with the first hollow cylinder 5, the second hollow cylinder 5, the 3rd hollow cylinder from the top to the bottom
6th, the 4th hollow cylinder 7, the 5th hollow cylinder 8, the diameter of the second hollow cylinder 5, the diameter of the 4th hollow cylinder 7, the first hollow cylinder 5 it is straight
Footpath, the diameter of the 5th hollow cylinder 8 successively decrease successively, and the diameter of the first hollow cylinder 5 is equal to the diameter of the 3rd hollow cylinder 6；Cylinder connects
Drum outer wall bottom is connect provided with first annular boss 3, the bottom of sleeve 1 is connected with the top contact of first annular boss 3.
The hollow outer wall of adapter sleeve 9 is provided with the second annular boss 10 and the 3rd annular boss 11；Second annular boss 10 blocks
It is connected in the second hollow cylinder 5, the bottom of the 3rd annular boss 11 is connected with the top contact of cylinder connecting cylinder, the 3rd convex annular
The diameter with diameter greater than the first hollow cylinder 5 of platform 11.
The bottom of adapter 12 is located in the 4th hollow cylinder 7, and packing ring is cased with the adapter 12 in the 4th hollow cylinder 7
13；Segment connecting cylinder 2 is two；I.e. segment connecting cylinder 2 is semicylinder connecting cylinder；Segment connecting cylinder 2, first is hollow
The 5, second hollow cylinder 5 of cylinder, the 3rd hollow cylinder 6, the 4th hollow cylinder 7, the 5th hollow cylinder 8 are made of copper；Avoid when mounted
Scratch the situation of part.
As shown in Figures 1 to 5, installation instructions, have between nozzle 14 and matrix 15 between the irregular argon arc weldings of about 2mm
Gap, makes argon arc welding gap be located in the hollow cylinder 8 of half the 5th, nozzle 14 is located at half the in a segment connecting cylinder 2
In four hollow cylinders 7；The second annular boss 10 on hollow adapter sleeve 9 is connected in the second hollow cylinder 5 again, the 3rd annular boss
11 bottom is connected with the top contact of cylinder connecting cylinder；Make hollow adapter sleeve 9 be connected with cylinder connecting cylinder it is safer can
Lean on；One end of adapter is fixed in hollow adapter sleeve 9, and its bottom is connected with nozzle 14, adapter 12 connects with nozzle 14
Logical, packing ring 13 makes adapter 12 be connected closer with nozzle 14；By another segment connecting cylinder 2 and the segment installed
Connecting cylinder 2 is installed face-to-face；Upper bush 1 is covered, connects the bottom of sleeve 1 and the top contact of first boss, it is ensured that sleeve 1
Do not glide, make present invention safety and reliability when in use；Separately pacified using two segment connecting cylinders 2 in above-mentioned installation process
Dress, reduces the installation difficulty of the present invention, and makes to connect closer reliability between each part.
In use, the present invention is arranged on nozzle 14, oil enters nozzle 14 from adapter 12, finally from main fuel pipe and
Primary fuel pipe is fuel-displaced, forms back flush.
The Economic and Efficiency Analysis of the present invention
The present invention is simple in construction, and the material used is copper, rubber and 45# steel, and easy to process, cost is relatively low；Its mid-early stage
60,000 yuan of design cost is investigated, 20,000 yuan of expense, 20,000 yuan of equipment acceptance testing expenses, altogether 100,000 yuan of cost are fabricated.
Counted according to the service condition of RD-93 engines, evaluate directly to change without flushing after every engine use and spray
Mouth, obtains cost and converts into 80,000 yuan of RMB；Along with each cost of labor, 250,000 yuan of people of maintenance cost of every engine are amounted to
People's coin；250,000 yuans can be then saved using flooding nozzle of the present invention.
Further, since the application of the present invention, can reduce cycle of the engine when returning repair in shop reason, and substantial amounts of saving
Repair cost；Therefore, calculated according to 50 engines being on active service at present in Pakistan, the present invention can be cost-effective for company
12500000 yuans, be that company brings great economic benefit.
At present, certain domestic model engine main fuel house steward nozzle is consistent with RD-93 engines, its requirement backwashed
It is identical；Therefore, main fuel house steward backwash fixture is extended on the engine of the model, improves the reliability of the engine,
Bigger economic benefit and social benefit is brought for enterprise simultaneously.
According to above-described embodiment, the present invention just can be realized well.What deserves to be explained is, before said structure design
Put, to solve same technical problem, some made in the present invention are used without substantial change or polishing
Technical scheme essence still as the present invention, therefore it should also be as within the scope of the present invention.
Claims (7)
1. one kind, which is used for fuel manifold nozzle, backwashes fixture, it is characterised in that：Including multiple segment connecting cylinders (2), hollow
Adapter sleeve (9) and adapter (12)；The side of multiple segment connecting cylinders (2) is sequentially connected from head to tail to form cylinder connecting cylinder,
Sleeve (1) is cased with the outer wall of cylinder connecting cylinder, hollow adapter sleeve (9) is connected in cylinder connecting cylinder, the one of adapter
End is fixed in hollow adapter sleeve (9).
2. the fuel manifold nozzle according to claim 1 that is used for backwashes fixture, it is characterised in that：Cylinder connecting cylinder from
Top-to-bottom is sequentially provided with the first hollow cylinder (4), the second hollow cylinder (5), the 3rd hollow cylinder (6), the 4th hollow cylinder (7),
Five hollow cylinders (8)；The diameter of second hollow cylinder (5), the diameter of the 4th hollow cylinder (7), the diameter of the first hollow cylinder (4), the 5th
The diameter of hollow cylinder (8) successively decreases successively, and the diameter of the first hollow cylinder (4) is equal to the diameter of the 3rd hollow cylinder (6).
3. the fuel manifold nozzle according to claim 2 that is used for backwashes fixture, it is characterised in that：Outside cylinder connecting cylinder
Wall bottom is provided with first annular boss (3), and the bottom of sleeve (1) is connected with the top contact of first annular boss (3).
4. the fuel manifold nozzle according to claim 3 that is used for backwashes fixture, it is characterised 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) in, the bottom of the 3rd annular boss (11) is connected with the top contact of cylinder connecting cylinder, the 3rd annular boss (11) it is straight
Footpath is more than the diameter of the first hollow cylinder (4).
5. the fuel manifold nozzle according to claim 4 that is used for backwashes fixture, it is characterised in that：The bottom of adapter (12)
Portion is located in the 4th hollow cylinder (7), and packing ring (13) is cased with the adapter (12) in the 4th hollow cylinder (7).
6. the fuel manifold nozzle according to claim 5 that is used for backwashes fixture, it is characterised in that：Segment connecting cylinder
(2) it is two.
7. the fuel manifold nozzle according to claim 5 that is used for backwashes fixture, it is characterised 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) by
Copper into.
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 CN105032876A (en) | 2015-11-11 |
| CN105032876B true CN105032876B (en) | 2017-07-14 |
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ID=54440177
Family Applications (1)
| 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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| Country | Link |
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| CN (1) | CN105032876B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105397680B (en) * | 2015-12-08 | 2017-04-19 | 成都发动机（集团）有限公司 | Tool clamp for aircraft engine cyclone atomization test |
| CN105973545B (en) * | 2016-07-11 | 2018-10-16 | 贵州凯阳航空发动机有限公司 | Engine I fulcrums detect the detecting system of fixture and its composition |
| 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 |
| 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 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2318458B2 (en) * | 1973-04-12 | 1980-09-04 | Lechler Gmbh & Co Kg, 7012 Fellbach | Device for the sealing attachment of nozzles to pipe parts |
| US6820291B1 (en) * | 2003-06-18 | 2004-11-23 | T&S Brass And Bronze Works, Inc. | 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 |
-
2015
- 2015-06-13 CN CN201510324037.4A patent/CN105032876B/en active Active
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| Publication number | Publication date |
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| CN105032876A (en) | 2015-11-11 |
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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. |