CN104097008B - The stationary fixture of fuel nozzle and the processing method of fuel nozzle - Google Patents
The stationary fixture of fuel nozzle and the processing method of fuel nozzle Download PDFInfo
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- CN104097008B CN104097008B CN201410335876.1A CN201410335876A CN104097008B CN 104097008 B CN104097008 B CN 104097008B CN 201410335876 A CN201410335876 A CN 201410335876A CN 104097008 B CN104097008 B CN 104097008B
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- fuel nozzle
- nozzle
- fuel
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- pin
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Classifications
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- 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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
- B23K3/087—Soldering or brazing jigs, fixtures or clamping means
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/008—Soldering within a furnace
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention provides the stationary fixture of a kind of fuel nozzle and the processing method of fuel nozzle, the stationary fixture of fuel nozzle includes: a support component (10)；Positioning component (20), is arranged on a support component (10), and positioning component (20) has the supported hole (21) that the nozzle carrier (1) with fuel nozzle coordinates；Clamp assembly (30), being arranged on a support component (10), clamp assembly (30) includes the first clamping element (31) and second clamping element (32) of the housing (4) from relative both direction clamping fuel nozzle.Technical scheme efficiently solves the problem big because of fuel nozzle structure complexity soldering difficulty of the prior art.
Description
Technical field
The present invention relates to Machining Technology field, in particular to the stationary fixture of a kind of fuel nozzle and fuel nozzle
Processing method.
Background technology
It is desirable to the fuel nozzle of the electromotor of soldering is less, the fuel nozzle of certain electromotor include nozzle carrier, sleeve pipe and,
The method using vacuum brazing by nozzle carrier, sleeve pipe and welds together, and needs the solder joint of welding to only have two, it is only necessary to control
Making a height dimension, and tolerance is relatively big (having the tolerance of 0.3mm), the design of part of fuel nozzle is simple, and soldering is difficult
Spend little.
Whirlpool axle aero-engine fuel nozzle include nozzle carrier 1, sleeve pipe 2, fuel pipe 3, housing 4, spout 5, cyclone 6,
First pin 7 and the second pin 8.Use the method for vacuum brazing by nozzle carrier 1, sleeve pipe 2, fuel pipe 3, housing 4, spray
Mouth the 5, first pin 7 and the second pin 8 weld together, and need the weld seam of welding to have 6, and 6 weld seams include nozzle
Between seat 1 and the second weld seam between pin 8, weld seam, nozzle carrier 1 and the sleeve pipe 2 between nozzle carrier 1 and the first pin 7
Weld seam, nozzle carrier 1 and fuel pipe 3 between weld seam, housing 4 and fuel pipe 3 between weld seam and housing 4 and spout 5
Between weld seam.Owing to the part of this fuel nozzle is many, and the size of each part is little, and solder joint is many, and parts size precision is wanted
Ask higher, hardness HRC >=48 at spout 5 need to be ensured.The structure of above-mentioned fuel nozzle is complicated, and soldering difficulty is big.
Summary of the invention
It is desirable to provide the stationary fixture of a kind of fuel nozzle and the processing method of fuel nozzle, with solve in prior art because of
The problem that fuel nozzle structure complexity soldering difficulty is big.
To achieve these goals, according to an aspect of the invention, it is provided the stationary fixture of a kind of fuel nozzle, including:
Prop up support component；Positioning component, is arranged on a support component, and positioning component has the supported hole that the nozzle carrier with fuel nozzle coordinates；
Clamp assembly, is arranged on a support component, and clamp assembly includes first of the housing from relative both direction clamping fuel nozzle
Clamping element and the second clamping element.
Further, positioning component includes connection board and gripper shoe, and connection board is arranged on a support component, and gripper shoe connects
On the top of connection board, supported hole is arranged on the supporting plate.
Further, a support component is provided with the first protuberance and the second protuberance, is formed and dodge shell between the first protuberance and the second protuberance
Body dodge recess, the first clamping element is movably disposed on the first protuberance, and it is convex that the second clamping element is movably disposed at second
In portion.
Further, the end of the second clamping element is provided with the hole, location of the one end fits with housing, the axis in hole, location and housing
Dead in line.
According to a further aspect in the invention, it is provided that the processing method of a kind of fuel nozzle, fuel nozzle include nozzle carrier, sleeve pipe,
Fuel pipe, housing, spout, the first pin and the second pin, processing method comprises the following steps: step S20: pass through spot welding
To nozzle carrier and the second pin, nozzle carrier and the first pin, nozzle carrier and sleeve pipe, nozzle carrier and fuel pipe, housing and fuel pipe
And housing and spout position；Step S30: commissure between nozzle carrier and second pin of the fuel nozzle of a postwelding,
Commissure between the commissure between commissure, nozzle carrier and sleeve pipe between nozzle carrier and the first pin, nozzle carrier, housing
And the commissure interpolation solder between commissure and housing and spout between fuel pipe；Step S40: fixed by stationary fixture
Adding the fuel nozzle after solder, wherein, stationary fixture is the stationary fixture of the fuel nozzle any one of Claims 1-4；
Step S50: fuel nozzle is sent in vacuum drying oven and heats so that solder melts so that nozzle carrier, sleeve pipe, fuel pipe, shell
Body, spout, the first pin and the second pin weld together；Step S60: the fuel nozzle after heating is cooled down.
Further, further comprising the steps of before step S20: step S10: the surface to be welded of fuel nozzle is carried out electricity
Plating.
Further, in step S20, further include steps of by laser spot welding to nozzle carrier and the second pin,
Nozzle carrier and the first pin, nozzle carrier and sleeve pipe, nozzle carrier and fuel pipe, housing and fuel pipe and housing and spout carry out fixed
Position.
Further, in step S20, the technological parameter of laser spot welding is as follows: laser pulse width is in 14 ± 0.1ms scope
In, laser energy is in the range of 20J～30J, and laser focal is in the range of 95mm～100mm, and argon flow amount exists
In the range of 5L/min～7.5L/min.
It is further, further comprising the steps of after step S60: step S70: the fuel nozzle after cooling is carried out heat treatment,
Heat treatment includes successively: quench the fuel nozzle after cooling；The fuel nozzle after quenching is taken out, to quenching from vacuum drying oven
Fuel nozzle after fire is tempered.
Further, in step S70, further include steps of the temperature of quenching in the range of 950 DEG C～1050 DEG C,
The temperature of tempering is in the range of 450 DEG C～500 DEG C.
Application technical scheme, stationary fixture includes a support component, positioning component and clamp assembly, and positioning component is arranged
On a support component, positioning component has the supported hole that the nozzle carrier with fuel nozzle coordinates.Supported hole is used for supporting nozzle carrier,
Nozzle carrier is positioned on stationary fixture by positioning component.Clamp assembly is arranged on a support component, and clamp assembly includes from phase
To first clamping element of housing of both direction clamping fuel nozzle and the second clamping element.First clamping element and the second clamping element are used
In from relative both direction clamping body so that housing is fixing on the supporting member.Above-mentioned stationary fixture can be by fuel nozzle
It is fixed, effectively limit situation about deforming after fuel nozzle enters vacuum drying oven, and then efficiently controlled fuel oil spray
The dimensional accuracy of mouth.
Accompanying drawing explanation
The Figure of description of the part constituting the application is used for providing a further understanding of the present invention, and the present invention's is schematic real
Execute example and illustrate for explaining the present invention, being not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation of the stationary fixture of the fuel nozzle according to the present invention；
Fig. 2 shows the structural representation of the fuel nozzle of the required processing of the present invention；
Fig. 3 shows the assembling structural representation of the stationary fixture of the fuel nozzle of Fig. 1 and the fuel nozzle of required processing；And
Fig. 4 shows the schematic flow sheet of the embodiment of the processing method of the fuel nozzle according to the present invention；
Above-mentioned accompanying drawing includes the following drawings labelling:
1, nozzle carrier；2, sleeve pipe；3, fuel pipe；4, housing；5, spout；6, cyclone；7, the first pin；8、
Second pin；10, support component is propped up；11, the first protuberance；12, the second protuberance；20, positioning component；21, supported hole；22、
Connection board；23, gripper shoe；24, cover plate；241, installing hole；25, the first securing member；31, the first clamping element；32、
Second clamping element；321, hole, location.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
As shown in Figure 1 to Figure 3, the stationary fixture of the fuel nozzle of the present embodiment includes a support component 10, positioning component 20 and folder
Tight assembly, positioning component 20 is arranged on a support component 10, and positioning component 20 has what the nozzle carrier 1 with fuel nozzle coordinated
Supported hole 21, clamp assembly is arranged on a support component 10, and clamp assembly includes from relative both direction clamping fuel nozzle
First clamping element 31 and the second clamping element 32 of housing 4.
The stationary fixture of the fuel nozzle of application the present embodiment, stationary fixture includes a support component 10, positioning component 20 and clamping group
Part, positioning component 20 is arranged on a support component 10, and positioning component 20 has the support that the nozzle carrier 1 with fuel nozzle coordinates
Hole 21.Supported hole 21 is used for supporting nozzle carrier 1 so that nozzle carrier 1 is positioned on stationary fixture by positioning component 20.Clamping
Assembly is arranged on a support component 10, and clamp assembly includes the first folder of the housing 4 from relative both direction clamping fuel nozzle
Tight part 31 and the second clamping element 32.First clamping element 31 is used for from relative both direction clamping body 4 with the second clamping element 32,
Housing 4 is fixed in support member 10.Fuel nozzle can be fixed by above-mentioned stationary fixture, effectively limit combustion
The situation that oil burner nozzle deforms after entering vacuum drying oven, and then efficiently controlled the dimensional accuracy of fuel nozzle.
In the present embodiment, positioning component 20 includes connection board 22 and gripper shoe 23, and connection board 22 is arranged on a support component
On 10, gripper shoe 23 is connected to the top of connection board 22, and supported hole 21 is arranged in gripper shoe 23.Connection board 22 He
The simple in construction of gripper shoe 23, manufactures simplicity, with low cost.Preferably, supported hole 21 is shoulder hole, and shoulder hole includes
One hole section and the second hole section, the internal diameter of the first hole section is more than the internal diameter of the second hole section.
In the present embodiment, prop up support component 10 and be provided with the first protuberance 11 and the second protuberance 12, the first protuberance 11 and the second protuberance
Formed between 12 dodge housing 4 dodge recess, the first clamping element 31 is movably disposed on the first protuberance 11, the second folder
Tight part 32 is movably disposed on the second protuberance 12.During installation, can first nozzle carrier 1 be fixed in gripper shoe 23, so
After the second clamping element 32 is arranged on the second protuberance 12, finally by the first clamping element 31, housing 4 is clipped in the first clamping element
31 and second between clamping element 32.
In the present embodiment, the end of the second clamping element 32 is provided with the hole, location 321 of the one end fits with housing 4, positions hole 321
The dead in line of axis and housing 4.Housing 4 can be positioned by hole 321, location, then will by the first clamping element 31
Housing 4 is clamped.
In the present embodiment, positioning component 20 also includes cover plate 24 and the first securing member 25, and cover plate 24 has for wearing nozzle
Seat 1 installing hole 231, cover plate 24 by the first securing member 25 be connected in gripper shoe 23 with by spacing for nozzle carrier 1 at supported hole
In 21.Nozzle carrier 1 can be fastened in gripper shoe 23 by cover plate 24 and the first securing member 25.Preferably, the first securing member
25 is screw.
In the present embodiment, the first protuberance 11 is provided with the first installing hole wearing the first clamping element 31, the axis of the first installing hole
Dead in line with housing 4.Preferably, the first clamping element 31 is screw rod, and screw rod has external screw thread, and the first installing hole is with outward
The internal thread hole of threaded engagement, clamp assembly also includes clamping plate, and the side of clamping plate abuts with the end face of the other end of housing 4, folder
The opposite side of plate abuts with the end face of screw rod.Threaded simple in construction, simple installation.
In the present embodiment, the second protuberance 12 is provided with the second installing hole wearing the second clamping element 32, the second installing hole and shell
The dead in line of body 4.Preferably, the second clamping element 32 is mast, and the second installing hole is through hole, and the second clamping element 32 passes through
Second securing member is fixed in support member 10.The second clamping element so can be made to be fixed in support member 10, convenient fixing
Fuel nozzle.Preferably, the second securing member is screw.
As shown in Figure 4, the application also provides for the processing method of a kind of fuel nozzle, fuel nozzle include nozzle carrier 1, sleeve pipe 2,
Fuel pipe 3, housing 4, spout the 5, first pin 7 and the second pin 8, the processing method of fuel nozzle comprises the following steps:
Step S20: by spot welding to nozzle carrier 1 and the second pin 8, nozzle carrier 1 and the first pin 7, nozzle carrier 1 and sleeve pipe
2, nozzle carrier 1 and fuel pipe 3, housing 4 and fuel pipe 3 and housing 4 and spout 5 position；
Step S30: the commissure between nozzle carrier 1 and second pin 8 of the fuel nozzle of a postwelding, nozzle carrier 1 and first
The commissure between commissure, nozzle carrier 1 and fuel pipe 3 between commissure, nozzle carrier 1 and sleeve pipe 2 between pin 7,
Solder is added in commissure between commissure and housing 4 and spout 5 between housing 4 and fuel pipe 3；
Step S40: fixing the fuel nozzle after adding solder by stationary fixture, wherein, stationary fixture is above-mentioned fuel nozzle
Stationary fixture；
Step S50: fuel nozzle is sent in vacuum drying oven and heats so that solder melt so that nozzle carrier 1, sleeve pipe 2, combustion
Oil pipe 3, housing 4, spout the 5, first pin 7 and the second pin 8 weld together；
Step S60: the fuel nozzle after heating is cooled down.
The processing method of application the present embodiment fuel nozzle, is positioned each part by spot welding, efficiently avoid part
There is the situation of the change of relative displacement after entering vacuum drying oven, efficiently reduce part and enter the deformation of furnace rear.Pass through stationary fixture
Fixing fuel nozzle, limits the deformation of each part, has efficiently controlled dimensional accuracy and form and position tolerance.
In the present embodiment, in step s 30, the gap of weld seam is in the range of-0.01mm～0.08mm.So strict control
The gap of weld seam, is effectively guaranteed the quality of soldering.
In the present embodiment, further comprising the steps of before step S20: step S10: the surface to be welded of fuel nozzle is entered
Row electroplating processes.Treat the poor surface of face of weld wettability and carry out electroplating processes, efficiently solve the material being difficult to soldering
Problem.
In the present embodiment, in step S20, further include steps of by laser spot welding nozzle carrier 1 and second
Pin 8, nozzle carrier 1 and the first pin 7, nozzle carrier 1 and sleeve pipe 2, nozzle carrier 1 and fuel pipe 3, housing 4 and fuel pipe 3
And housing 4 and spout 5 position.
In the present embodiment, in step S20, the technological parameter of laser spot welding is as follows: laser pulse width is at 14 ± 0.1ms
In the range of, laser energy is in the range of 20J～30J, and laser focal is in the range of 95mm～100mm, and argon flow amount exists
In the range of 5L/min～7.5L/min.
In the present embodiment, further comprising the steps of after step S60: step S70: the fuel nozzle after cooling is carried out heat
Processing, heat treatment includes successively: quench the fuel nozzle after cooling；The fuel nozzle after quenching is taken out from vacuum drying oven,
Fuel nozzle after quenching is tempered.Heat treatment can ensure that the hardness of spout.
In the present embodiment, in step S70, further include steps of the temperature of quenching at 950 DEG C～the model of 1050 DEG C
In enclosing, the temperature of tempering is in the range of 450 DEG C～500 DEG C.
The part of fuel nozzle of the prior art is less, simple in construction, and dimension precision requirement is relatively low, it is not necessary to use pre-aligned,
Also without with particularly entering stove fixture.And the part of the fuel nozzle of the required processing of the present embodiment is many, the size of each part is little,
Solder joint is many, and parts size precision requires higher, need to ensure hardness HRC >=48 at spout 5.The fuel oil spray of Application Example
The processing method of mouth, by the control of the gap of butt welded seam, feeding quantity, heat treatment and stationary fixture, efficiently solves combustion
The problem of the performance indications such as the seepage of oil burner nozzle, welding deformation, spout hardness, postwelding flow, the uniformity.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art
For, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of being made, etc.
With replacement, improvement etc., should be included within the scope of the present invention.
Claims (9)
1. the stationary fixture of a fuel nozzle, it is characterised in that including:
Prop up support component (10)；
Positioning component (20), is arranged on described support component (10), and described positioning component (20) has and fuel oil spray
The supported hole (21) that the nozzle carrier (1) of mouth coordinates；
Clamp assembly, is arranged on described support component (10), and described clamp assembly includes from relative both direction folder
First clamping element (31) of the housing (4) of tight described fuel nozzle and the second clamping element (32)；
Described positioning component (20) includes connection board (22) and gripper shoe (23), and described connection board (22) is arranged
On described support component (10), described gripper shoe (23) is connected to the top of described connection board (22), described
Supported hole (21) is arranged in described gripper shoe (23).
The stationary fixture of fuel nozzle the most according to claim 1, it is characterised in that described support component (10) is provided with
First protuberance (11) and the second protuberance (12), formed between described first protuberance (11) and described second protuberance (12)
Dodging the recess of dodging of described housing (4), described first clamping element (31) is movably disposed at described first protuberance (11)
On, described second clamping element (32) is movably disposed on described second protuberance (12).
The stationary fixture of fuel nozzle the most according to claim 1, it is characterised in that the end of described second clamping element (32)
Portion is provided with the hole, location (321) of the one end fits with described housing (4), and the axis in hole, described location (321) is with described
The dead in line of housing (4).
4. the processing method of a fuel nozzle, it is characterised in that fuel nozzle includes nozzle carrier (1), sleeve pipe (2), fuel pipe
(3), housing (4), spout (5), the first pin (7) and the second pin (8), described processing method includes following
Step:
Step S20: by spot welding to described nozzle carrier (1) and described second pin (8), described nozzle carrier (1) and institute
State the first pin (7), described nozzle carrier (1) and described sleeve pipe (2), described nozzle carrier (1) and described fuel pipe (3),
Described housing (4) and described fuel pipe (3) and described housing (4) and described spout (5) position；
Step S30: the described nozzle carrier (1) of described fuel nozzle of described some postwelding and described second pin (8) it
Between commissure, described nozzle carrier (1) and described first pin (7) between commissure, described nozzle carrier (1) and
Commissure between commissure between described sleeve pipe (2), described nozzle carrier (1) and described fuel pipe (3), described
Between commissure and described housing (4) and described spout (5) between housing (4) and described fuel pipe (3)
Solder is added in commissure；
Step S40: fix the described fuel nozzle after adding described solder, wherein, described stationary fixture by stationary fixture
The stationary fixture of the fuel nozzle according to any one of claims 1 to 3；
Step S50: described fuel nozzle is sent in vacuum drying oven and be heated so that described solder melts so that described nozzle
Seat (1), described sleeve pipe (2), described fuel pipe (3), described housing (4), described spout (5), described first pin
Nail (7) and described second pin (8) weld together；
Step S60: the described fuel nozzle after heating is cooled down.
The processing method of fuel nozzle the most according to claim 4, it is characterised in that also included before described step S20
Following steps:
Step S10: the surface to be welded of described fuel nozzle is carried out electroplating processes.
The processing method of fuel nozzle the most according to claim 4, it is characterised in that in described step S20, further
Comprise the following steps: by laser spot welding to described nozzle carrier (1) and described second pin (8), described nozzle carrier (1)
With described first pin (7), described nozzle carrier (1) and described sleeve pipe (2), described nozzle carrier (1) and described fuel oil
Pipe (3), described housing (4) and described fuel pipe (3) and described housing (4) and described spout (5) carry out fixed
Position.
The processing method of fuel nozzle the most according to claim 6, it is characterised in that in described step S20, described sharp
The technological parameter of light spot welding is as follows: laser pulse width is in the range of 14 ± 0.1ms, and laser energy is in the scope of 20J～30J
In, laser focal is in the range of 95mm～100mm, and argon flow amount is in the range of 5L/min～7.5L/min.
The processing method of fuel nozzle the most according to claim 4, it is characterised in that also include after described step S60
Following steps:
Step S70: the described fuel nozzle after cooling is carried out heat treatment, and described heat treatment includes successively:
Described fuel nozzle after cooling is quenched；
From described vacuum drying oven, take out the described fuel nozzle after described quenching, the described fuel nozzle after described quenching is entered
Row tempering.
The processing method of fuel nozzle the most according to claim 8, it is characterised in that in described step S70, further
Comprise the following steps: the temperature of described quenching is in the range of 950 DEG C～1050 DEG C, and the temperature of described tempering exists
In the range of 450 DEG C～500 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410335876.1A CN104097008B (en) | 2014-07-15 | 2014-07-15 | The stationary fixture of fuel nozzle and the processing method of fuel nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410335876.1A CN104097008B (en) | 2014-07-15 | 2014-07-15 | The stationary fixture of fuel nozzle and the processing method of fuel nozzle |
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| Publication Number | Publication Date |
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| CN104097008A CN104097008A (en) | 2014-10-15 |
| CN104097008B true CN104097008B (en) | 2016-08-17 |
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| CN201410335876.1A Active CN104097008B (en) | 2014-07-15 | 2014-07-15 | The stationary fixture of fuel nozzle and the processing method of fuel nozzle |
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| CN104483133B (en) * | 2014-10-27 | 2017-02-15 | 西安航空动力股份有限公司 | Clamp for aero-engine nozzle angle test and clamping method of clamp |
| CN104526105A (en) * | 2014-11-13 | 2015-04-22 | 中国南方航空工业(集团)有限公司 | Auxiliary brazing tool |
| CN105171171A (en) * | 2015-08-11 | 2015-12-23 | 十堰市倍力汽车管业有限公司 | Urea nozzle vacuum welding device and welding process thereof |
| CN109108416B (en) * | 2017-06-22 | 2024-01-19 | 中国航发常州兰翔机械有限责任公司 | Fuel oil cover vacuum brazing structure and processing method thereof |
| CN107824932B (en) * | 2017-11-17 | 2020-06-23 | 中国航发贵州黎阳航空动力有限公司 | Clamp for controlling brazing deformation of fuel header pipe |
| CN108098100B (en) * | 2017-12-07 | 2020-11-20 | 北京动力机械研究所 | Thermal deformation control device of multi-degree-of-freedom space structure |
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| CN111112770A (en) * | 2019-12-27 | 2020-05-08 | 成立航空技术有限公司 | Brazing filler metal adding and welding method for nozzle assembly |
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| CN111958080B (en) * | 2020-08-18 | 2022-06-21 | 哈尔滨汽轮机厂有限责任公司 | Welding method for central nozzle flange and nozzle corrugated pipe body of 300 MW-level gas turbine |
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| CN114643431B (en) * | 2020-12-02 | 2023-11-03 | 中国航发商用航空发动机有限责任公司 | Combined welding method for aeroengine fuel nozzle assembly |
| CN115246027B (en) * | 2021-04-26 | 2023-11-10 | 中国航发商用航空发动机有限责任公司 | Pipeline assembly, engine and pipeline assembly welding process |
| WO2023039793A1 (en) * | 2021-09-16 | 2023-03-23 | 深圳市摆渡微电子有限公司 | Nozzle for dispensing glue and manufacturing method therefor |
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| DE102005011694A1 (en) * | 2005-03-11 | 2006-09-14 | Robert Bosch Gmbh | Device to be used for assembly or disassembly of fuel injection valve, comprising clamping unit acting with predetermined pressure |
| EP1844895A2 (en) * | 2006-03-17 | 2007-10-17 | General Electric Company | Braze/weld manipulator and method of manipulating nozzles |
| DE102011075485A1 (en) * | 2010-11-03 | 2012-05-03 | Hochschule Reutlingen | Variable injector holder |
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| CN203488301U (en) * | 2013-09-06 | 2014-03-19 | 胡永军 | Fixing device of automobile fuel injector |
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| CN104097008A (en) | 2014-10-15 |
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