CN105290704A - Method for replacing spraying rod and lug seat of stressing main pipe - Google Patents
Method for replacing spraying rod and lug seat of stressing main pipe Download PDFInfo
- Publication number
- CN105290704A CN105290704A CN201510767456.5A CN201510767456A CN105290704A CN 105290704 A CN105290704 A CN 105290704A CN 201510767456 A CN201510767456 A CN 201510767456A CN 105290704 A CN105290704 A CN 105290704A
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- China
- Prior art keywords
- welding
- afterburning
- house steward
- welded
- spray boom
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a method for replacing a spraying rod and a lug seat of a stressing main pipe. The method includes the following steps that the broken spraying rod or lug seat is cut off along a welding joint on a pipeline of the stressing main pipe, and chippings on the pipeline are removed; the two ends of a welding and cutting notch are blocked; surplus solder on the end face of the notch is removed, the sharp edge of the end face of the notch is hit to be blunt, and blocking of the two ends of the notch is released; the parts, at the two ends of the notch, of the pipeline of the stressing main pipe are removed; gasoline is used for cleaning a part to be welded, and the part to be welded is blown dried; polishing is conducted on the position, to be welded, of the end face of the notch, and the position to be welded is scrubbed; the part to be welded is inserted into the notch, argon is led into an inner cavity of the pipeline for protection, 2-3 points are welded to the position to be welded in a positioning manner, and welding is conducted on the position to be welded along the circumference; after welding is completed, the welded part is checked; vacuum heat treatment is conducted after welding, and welding stress is eliminated; and flow sealing detection is conducted. The broken spraying rod and lug seat on the stressing main pipe are replaced, and therefore the purpose of reducing the repairing cost of an engine is achieved.
Description
Technical field:
The present invention relates to technical field of engine overhaul, be specifically related to a kind of method that afterburning house steward changes spray boom and ear seat.
Background technology:
Engine after a period of operation, often with afterburning house steward's flow, distribute the phenomenon exceeded standard, as Fig. 1, shown in Fig. 2, afterburning house steward 1 comprises spray boom 2 and ear seat 3, and be circumscribed with Fuel Injector Bar 5, spray boom 2 and produce weld seam 4 when welding between ear seat 3 with afterburning house steward 1, the distortion of spray boom, disconnected bar, or the excessive wear of ear seat, crackles on weld seam etc. all can cause afterburning house steward to produce fault, and afterburning house steward is as the important component part of oil supply system, its repairing quality will directly affect the performance level of engine, the lighter causes host performance to decline, severe one burns parts, have a strong impact on the use safety of engine.Therefore, improve and improve engine Afterburner fuel manifold service technique, the safe handling for aero-engine provides strong technical support, and tool is of great significance.
Summary of the invention:
The object of this invention is to provide a kind of method that afterburning house steward changes spray boom and ear seat, upper for afterburning house steward out of order spray boom and ear seat are changed, reduces engine overhaul cost.
For achieving the above object, the present invention is by the following technical solutions:
A kind of afterburning house steward provided by the invention changes the method for spray boom and ear seat, and concrete steps are as follows:
Step one: cut out of order spray boom or ear seat along the weld seam on afterburning main pipe, and to clean out on afterburning main pipe weldering and cut the chip stayed;
Step 2: block the two ends of afterburning main pipe welding mouth earnestly;
Step 3: the excess solder disposing otch end face, and the sharp limit of otch end face is beaten blunt, then incision is cleaned out, remove the shutoff at the two ends of otch;
Step 4: the inner chamber removing the afterburning main pipe at otch two ends;
Step 5: treat weldment with gasoline cleaning, and dry up and treat weldment;
Step 6: place to be welded carries out polishing at otch end face, and place to be welded is cleaned;
Step 7: will treat that weldment inserts in otch, inner cavity of pipe leads to argon gas protection, at place to be welded tack welding 2 ~ 3 point, then circumferentially welds at place to be welded;
Step 8: after welding, checks welding position;
Step 9: weld vacuum heat treatment, eliminates welding stress;
Step 10: carry out flow sealing detection.
Block the two ends of afterburning main pipe welding mouth earnestly with rayon balls in described step 2.
Clean metal fillings and the foul of total tube cavity in described step 4 by the method for back suction, rinse extremely without foul with silk inspection.
File polishing place to be welded to presenting metallic luster by group in described step 6, and afterburning house steward's pipe thickness is not less than 0.95mm, cleans place to be welded with absorbent cotton and alcohol.
Allow after tack welding in described step 7 to correct, weld seam does not allow the pit caused because welding arc removes suddenly, and weld seam should evenly and smoothly be transferred on pipeline, and weld answers flawless, burn, overlap, the defect such as arc crater and undercut.
X-ray is adopted to check welding position in described step 8.
In described step 9, afterburning house steward is all put into vacuum heat treatment furnace, afterburning house steward keeps flat on the workbench of stove, shut fire door, vacuumize, vacuum reaches negative pressure, prevents part oxidation in the process of heating, then heat up, temperature rises to 500 ~ 600 DEG C, places a period of time in heat-treatment furnace insulation, eliminates welding stress and corrects the weldment be out of shape.
By the fuel manifold of afterburning house steward's call through test device in described step 10, kerosene pressure is raised to 8.826MPa stably, keeps 5min, to the upper all welding inspection of afterburning house steward, do not allowed crackle, checked the sealing of afterburning house steward's weld seam, do not allow seepage.
The repair welding of same afterburning house steward's same position and repair welding can not more than 2 times, mark in replacing position when first time changes spray boom or ear seat, when once or for the second time changing spray boom or ear seat to this position repair welding, again mark in repair welding place, do not allow to carry out repair welding to this position again after second time renewal part.
A kind of afterburning house steward of the present invention changes the beneficial effect of the method for spray boom and ear seat:
Because existing carbon removing method cannot be removed totally, cause indivedual Fuel Injector Bar fuel flow, distribute defective, because Afterburner fuel manifold is the weld assembly that can not be split, only rely on when repairing the conventional method such as aperture size on adjustment Fuel Injector Bar can not meet the repairing requirement of Afterburner fuel manifold completely, thus make scrapping of whole house steward.Therefore for the spray boom exceeded standard individually, the method reparation house steward changing spray boom all can be adopted: spray boom flow, distribution being exceeded standard is removed as there is the faults such as spray boom distortion, disconnected bar etc. cause house steward's flow, distribution, injection direction defective, again weld new spray boom, ensure house steward's flow, distribution pass the test.By the processing of testpieces, adjustment, test, endurance test examination and checking, demonstrate the repair method changing spray boom and ear seat and can meet the requirement recovering Afterburner fuel manifold using function, reach the object reducing engine overhaul cost; This repair method can meet engine instructions for use, and can be applicable to the repairing of other combustions similar to engine structure, oil system parts, be applied to engine overhaul at present, technical prospect is considerable.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of afterburning house steward of the present invention;
Fig. 2 is the schematic cross-section of afterburning house steward of the present invention;
The afterburning house steward of 1-, 2-spray boom, 3-ear seat, 4-weld seam, 5-Fuel Injector Bar.
Detailed description of the invention:
Below in conjunction with embodiment, the present invention is described in further detail.
A kind of afterburning house steward of the present invention changes the method for spray boom and ear seat, and concrete steps are as follows:
Step one: cut out of order spray boom or ear seat along the weld seam on afterburning main pipe, and to clean out on afterburning main pipe weldering and cut the chip stayed;
Step 2: block the two ends of afterburning main pipe welding mouth earnestly with rayon balls, protects total tube cavity, prevents foreign matter from entering;
Step 3: the excess solder disposing otch end face, and the sharp limit of otch end face is beaten blunt, do not allow body of damaging, then incision is cleaned out, take out rayon balls, remove the shutoff at the two ends of otch;
Step 4: inner chamber metal fillings and the foul of removing the afterburning main pipe at otch two ends by the method for back suction, rinses extremely without foul with silk inspection;
Step 5: treat weldment with gasoline cleaning, and dry up with compressed air and treat weldment;
Step 6: with group file polished cut end face place to be welded, scale removal to place to be welded presents metallic luster, and afterburning house steward's pipe thickness is not less than 0.95mm, and cleans place to be welded with absorbent cotton and alcohol, reduces weld defect;
Step 7: will treat that weldment inserts in otch, inner cavity of pipe leads to argon gas protection, at place to be welded tack welding 2 ~ 3 point, allow after tack welding to correct, weld seam does not allow the pit caused because welding arc removes suddenly, then circumferentially welds at place to be welded, and weld seam should evenly and smoothly be transferred on pipeline, weld answers flawless, burn, overlap, the defect such as arc crater and undercut;
Step 8: after welding, checks welding position with X-ray;
Step 9: weld vacuum heat treatment, all puts into vacuum heat treatment furnace by fuel manifold, and house steward keeps flat on the workbench of stove, shut fire door, vacuumize, vacuum reaches negative pressure, prevent part oxidation in the process of heating, then heat up, temperature rises to 500 ~ 600 DEG C, places a period of time in heat-treatment furnace insulation, eliminate welding stress, meanwhile, weldment, if any distortion, can be corrected it;
Step 10: by the fuel manifold of afterburning house steward's call through test device, kerosene pressure is raised to 8.826MPa stably, keeps 5min, do not allow seepage, the sealing of inspection house steward weld seam, wherein kerosene cleannes are not less than 7 grades (performing by GJB-420A standard);
During the section of changing repair welding, the repair welding of same house steward's same position and repair welding can not more than 2 times, when first time changes spray boom or ear seat at replacing position mark " I ", when once or for the second time changing spray boom or ear seat to this position repair welding, in repair welding place mark " II ", do not allow after second time renewal part again to this position repair welding.
Welding unbroken as far as possible carrying out, forbidding to allow conduit be subject to any mechanism causing stress when welding.
In the whole process of welding, inner cavity of pipe leads to pure argon protection.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although with reference to above-described embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or equivalent replacement, and not departing from any amendment of spirit and scope of the invention or equivalent replacement, it all should be encompassed in the middle of this right.
Claims (9)
1. afterburning house steward changes a method for spray boom and ear seat, it is characterized in that: concrete steps are as follows:
Step one: cut out of order spray boom or ear seat along the weld seam on afterburning main pipe, and to clean out on afterburning main pipe weldering and cut the chip stayed;
Step 2: block the two ends of afterburning main pipe welding mouth earnestly;
Step 3: the excess solder disposing otch end face, and the sharp limit of otch end face is beaten blunt, then incision is cleaned out, remove the shutoff at the two ends of otch;
Step 4: the inner chamber removing the afterburning main pipe at otch two ends;
Step 5: treat weldment with gasoline cleaning, and dry up and treat weldment;
Step 6: place to be welded carries out polishing at otch end face, and place to be welded is cleaned;
Step 7: will treat that weldment inserts in otch, inner cavity of pipe leads to argon gas protection, at place to be welded tack welding 2 ~ 3 point, then circumferentially welds at place to be welded;
Step 8: after welding, checks welding position;
Step 9: weld vacuum heat treatment, eliminates welding stress;
Step 10: carry out flow sealing detection.
2. a kind of afterburning house steward according to claim 1 changes the method for spray boom and ear seat, it is characterized in that: block the two ends of afterburning main pipe welding mouth earnestly in described step 2 with rayon balls.
3. a kind of afterburning house steward according to claim 1 changes the method for spray boom and ear seat, it is characterized in that: the metal fillings and the foul that clean total tube cavity in described step 4 by the method for back suction, rinses extremely without foul with silk inspection.
4. a kind of afterburning house steward according to claim 1 changes the method for spray boom and ear seat, it is characterized in that: in described step 6, file polishing place to be welded to presenting metallic luster by group, and afterburning house steward's pipe thickness is not less than 0.95mm, cleans place to be welded with absorbent cotton and alcohol.
5. a kind of afterburning house steward according to claim 1 changes the method for spray boom and ear seat, it is characterized in that: allow after tack welding in described step 7 to correct, weld seam does not allow the pit caused because welding arc removes suddenly, weld seam should evenly and smoothly be transferred on pipeline, weld answers flawless, burn, overlap, arc crater and undercut defect.
6. a kind of afterburning house steward according to claim 1 changes the method for spray boom and ear seat, it is characterized in that: adopt X-ray to check welding position in described step 8.
7. a kind of afterburning house steward according to claim 1 changes the method for spray boom and ear seat, it is characterized in that: in described step 9, afterburning house steward is all put into vacuum heat treatment furnace, afterburning house steward keeps flat on the workbench of stove, shuts fire door, vacuumizes, vacuum reaches negative pressure, prevent part oxidation in the process of heating, then heat up, temperature rises to 500 ~ 600 DEG C, place a period of time in heat-treatment furnace insulation, eliminate welding stress and correct the weldment be out of shape.
8. a kind of afterburning house steward according to claim 1 changes the method for spray boom and ear seat, it is characterized in that: by the fuel manifold of afterburning house steward's call through test device in described step 10, kerosene pressure is raised to 8.826MPa stably, keep 5min, to injection loop and all welding inspection of fuel manifold, do not allow crackle, checked the sealing of afterburning house steward's weld seam, do not allow seepage.
9. a kind of afterburning house steward according to claim 1 changes the method for spray boom and ear seat, it is characterized in that: the repair welding of same house steward's same position and repair welding can not more than 2 times, mark in replacing position when first time changes spray boom or ear seat, when once or for the second time changing spray boom or ear seat to this position repair welding, again mark in repair welding place, do not allow to carry out repair welding to this position again after second time renewal part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510767456.5A CN105290704B (en) | 2015-11-11 | 2015-11-11 | It is a kind of to reinforce the method that house steward changes spray boom and ear mount |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510767456.5A CN105290704B (en) | 2015-11-11 | 2015-11-11 | It is a kind of to reinforce the method that house steward changes spray boom and ear mount |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105290704A true CN105290704A (en) | 2016-02-03 |
| CN105290704B CN105290704B (en) | 2017-09-15 |
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| CN201510767456.5A Active CN105290704B (en) | 2015-11-11 | 2015-11-11 | It is a kind of to reinforce the method that house steward changes spray boom and ear mount |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106363345A (en) * | 2016-11-25 | 2017-02-01 | 沈阳黎明航空发动机(集团)有限责任公司 | Replacement method of bearing casing crack lubricating oil pipes |
| CN109648177A (en) * | 2018-12-21 | 2019-04-19 | 北京动力机械研究所 | A kind of pipeline connecting method suitable for fueling injection equipment |
| CN110823466A (en) * | 2019-11-19 | 2020-02-21 | 中国航发贵州黎阳航空动力有限公司 | Hydraulic test device for thrust augmentation main pipe fuel spray rod of aircraft engine |
| CN113714607A (en) * | 2021-08-25 | 2021-11-30 | 西安远航真空钎焊技术有限公司 | Method for processing main fuel pipe of gas turbine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106363345A (en) * | 2016-11-25 | 2017-02-01 | 沈阳黎明航空发动机(集团)有限责任公司 | Replacement method of bearing casing crack lubricating oil pipes |
| CN109648177A (en) * | 2018-12-21 | 2019-04-19 | 北京动力机械研究所 | A kind of pipeline connecting method suitable for fueling injection equipment |
| CN109648177B (en) * | 2018-12-21 | 2021-01-08 | 北京动力机械研究所 | Pipeline connection method suitable for oil injection device |
| CN110823466A (en) * | 2019-11-19 | 2020-02-21 | 中国航发贵州黎阳航空动力有限公司 | Hydraulic test device for thrust augmentation main pipe fuel spray rod of aircraft engine |
| CN113714607A (en) * | 2021-08-25 | 2021-11-30 | 西安远航真空钎焊技术有限公司 | Method for processing main fuel pipe of gas turbine |
| CN113714607B (en) * | 2021-08-25 | 2023-01-06 | 西安远航真空钎焊技术有限公司 | Method for processing main fuel pipe of gas turbine |
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| Publication number | Publication date |
|---|---|
| CN105290704B (en) | 2017-09-15 |
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Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |