CN107762699B - A kind of double oil circuits fuel nozzle flow rate test tooling - Google Patents
A kind of double oil circuits fuel nozzle flow rate test tooling Download PDFInfo
- Publication number
- CN107762699B CN107762699B CN201710899561.3A CN201710899561A CN107762699B CN 107762699 B CN107762699 B CN 107762699B CN 201710899561 A CN201710899561 A CN 201710899561A CN 107762699 B CN107762699 B CN 107762699B
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- Prior art keywords
- fuel nozzle
- nozzle
- groove
- flow rate
- oil circuit
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
- F02M65/001—Measuring fuel delivery of a fuel injector
Abstract
The invention discloses a kind of double oil circuits fuel nozzle flow rate test tooling and test methods, including mandrel, mandrel lower end is for being inserted into the cup assembly of fuel nozzle bottom the block head for blocking the first oil circuit, block head lower end outer circle offers the first groove, the first sealing ring for realizing fuel nozzle circumferential seal with the bottom cup assembly inner hole of fuel nozzle is placed in first groove, block head lower end surface offers the second groove, the second sealing ring of end face seal for realizing fuel nozzle with bottom cup assembly bottom surface is placed in second groove, first measure nozzle total flow, then it is blocked using a wherein oil circuit of this tooling to double oil circuits fuel nozzle, to measure the flow of another oil circuit, and then obtain the flow of two-way oil circuit, method is simple, test accuracy is high.
Description
Technical field
The invention belongs to aero-engine fuel nozzle flow test technical fields, and in particular to a kind of double oil circuits fuel oil spray
Mouth flow rate test tooling and test method.
Background technique
The structure of certain type aero-engine fuel nozzle is parallel binary channels fuel nozzle, oil circuit difference referring to Fig. 1
For the second oil circuit 12 and the first oil circuit 11, the first oil circuit 11 is equipped with bottom cup assembly 10, and cup assembly 10 lower part in bottom is equipped with cushion rubber,
Guarantee the sealing of bottom cup assembly 10 and 11 fit-up gap of the first oil circuit.Its course of work are as follows: oil inlet at oil inlet 13, charge oil pressure
It is gradually risen from low, the second oil circuit 12 fuel feeding always, when nozzle fuel feeding reaches pressure P1When, fuel feeding when the first oil circuit 11 is also opened；
In different pressures point, the fuel flow that the second oil circuit 12 and the first oil circuit 11 are sprayed needs to meet the flow Q of prescribed requirement；For
Influence of the control oil circuit flow resistance to flow, it is therefore desirable to measure the respective flow Q of two oil circuits under pressure P (P > P1)AAnd QB。
Current test method is: first blocking channel B with a set of special tooling, under pressure P-state, measures the flow of the second oil circuit 12
QA；Then again with other set special tooling and 10 inner hole of bottom cup assembly, it is ensured that fuel oil is not from asphalt channel B to oil circuit road
A alters oil, under pressure P-state, measures the flow Q of B oil circuitB.The shortcomings that this method, is: needing two sets of special toolings, cost
Height, test efficiency are low, and test mode and fuel nozzle actual working state are inconsistent；And due to sealing the second oil circuit 12
Special tooling needs to block housing cavity and bottom glass inner cavity simultaneously, that is, generates positioning, then plus part there are concentricity and dresses
With error, if bottom cup assembly 10 assemble it is not in place, when testing the flow of the first oil circuit 11, be easy to appear block it is unreliable, two
A asphalt channel alters mutually the problem of oil, causes surveyed test data inaccuracy.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of double oil circuits fuel nozzle flow rate test tooling and test sides
Method, it is only necessary to which a set of tooling just can be measured the test method of the flow of two oil circuits, and test efficiency is high, save the cost.
In order to achieve the above objectives, a kind of double oil circuits fuel nozzle flow rate test tooling of the present invention includes mandrel, mandrel
Lower end is provided with for being inserted into the cup assembly of fuel nozzle bottom the block head for blocking the first oil circuit, and block head lower end periphery offers
First groove is provided in the first groove for realizing fuel nozzle circumferential seal with the bottom cup assembly inner hole of fuel nozzle
The first sealing ring, block head lower end surface offers the second groove, is provided in the second groove for matching with bottom cup assembly bottom surface
Close the second sealing ring of end face seal for realizing fuel nozzle.
The mandrel upper end is provided with the cover board for blocking the cooperation of nozzle ending cover hole.
The cover board is hollow step axle construction, including big axis and small axis, is offered in big axial end along small axis outer circle
Third groove is provided with third sealing ring in third groove.
The mandrel upper end is provided with handle.
The diameter of the mandrel is less than the diameter of block head.
A kind of method that double oil circuits fuel nozzle flow rate test tooling carries out flow rate test, comprising the following steps:
Step 1, nozzle ending cover hole is blocked with plug；
Step 2, nozzle oil inlet is connect with exerciser connector；
Step 3, exerciser is opened, pressure is adjusted to the pressure P of design requirement, measures and flows through the first oil circuit of nozzle and the
The total flow Q of two oil circuitsAlways；
Step 4, it is depressurized to 0MPa, closes exerciser, it is with double oil circuits fuel nozzle flow rate test tooling that nozzle first is oily
Road is blocked；
Step 5, exerciser is opened, pressure is adjusted to the pressure P of design requirement, measures and flows through nozzle the second oil circuit flow
Q2；
Step 6, pass through Q1=QAlways-Q2Calculate the flow Q for flowing through the first oil circuit1。
Compared with prior art, the present invention at least has technical effect beneficial below, and double oil circuits fuel nozzle flow is surveyed
The bottom cup assembly inner hole of trial work dress and fuel nozzle realizes fuel nozzle circumferential seal, realizes with bottom cup assembly bottom surface
The end face seal of fuel nozzle, sealing effect is good, improves test accuracy.
Further, mandrel upper end is provided with for covering the cover board for closing and cooperating in nozzle ending cover hole, just using a device
The sealing of oil circuit and nozzle cover port may be implemented, it is easy to operate.
Further, cover board is hollow step axle construction, including big axis and small axis, is opened in big axial end along small axis outer circle
Equipped with third groove, the third sealing ring for improving sealing effect is provided in third groove, it is ensured that nozzle ending cover hole is trying
It is oil-proof during testing, it will be in the small shaft portion insertion nozzle ending cover hole of cover board 5 when use.
Further, mandrel upper end is provided with handle, disassembly convenient for assembly.
Further, the diameter of mandrel is less than the diameter of block head, reduces tooling weight, convenient for operation.
It is generated when a kind of double oil circuits fuel nozzle flow rate test method eliminates test and alters oil and test data inaccuracy
Hidden danger saves a set of tooling, manufacturing cost, and test mode is identical as nozzle actual working state, and the nozzle flow measured is quasi-
Really, reduce frock clamping number, improve duplex burner flow test efficiency and reliability.
Detailed description of the invention
Fig. 1 is double oil circuits fuel nozzle partial structural diagram；
Fig. 2 is double oil circuits fuel nozzle flow rate test tooling schematic diagram；
Fig. 3 is covering plate structure schematic diagram；
Fig. 4 is stopper structure schematic diagram；
Fig. 5 is schematic diagram after double oil circuits fuel nozzle flow rate test tooling and nozzle body assembly；
In attached drawing: 1, mandrel, 2, block head, the 3, first sealing ring, the 4, second sealing ring, 5, cover board, 51, third groove,
6, handle, 10, bottom cup assembly, the 11, first oil circuit, the 12, second oil circuit, 13, oil inlet, 14, nozzle ending cover hole, 15, plug,
151, the 4th groove.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
In order to which technical characteristics of the invention, purpose and effect are more clearly understood, drawings and the specific embodiments are now compareed
Illustrate a specific embodiment of the invention, the explanation of the invention is not limited.
Referring to Fig. 2, a kind of double oil circuits fuel nozzle flow rate test tooling includes mandrel 1, and 1 top of mandrel is provided with for covering
The cover board 5 cooperated in nozzle ending cover hole 14 is closed, 1 upper end of mandrel is provided with handle 6, anti-skidding annular knurl is provided on handle 6, is conveniently torn open
It is held when unloading, 1 lower end of mandrel is provided with for being inserted into the cup assembly of fuel nozzle bottom the closure for separating shell and the first oil circuit 11
First 2,2 lower end periphery of block head offers the first groove, is placed in the first groove in the bottom cup assembly with fuel nozzle
The first sealing ring 3 of fuel nozzle circumferential seal is realized in hole cooperation, and 2 lower end surface of block head offers the second groove, the second groove
In be placed with the second sealing ring of end face seal 4 for realizing fuel nozzle with bottom cup assembly bottom surface, the first groove and the
Two grooves are annular.
Referring to Fig. 3, cover board 5 is hollow step axle construction, including big axis and small axis, is offered on big axis along small axis periphery
For placing the third groove 51 of third sealing ring, third sealing ring is for improving sealing effect, it is ensured that nozzle ending cover hole 14 exists
It is oil-proof during test, it will be in the small shaft portion insertion nozzle ending cover hole 14 of cover board 5 when use.
Preferably, the diameter of mandrel 1 is less than the diameter of block head 2, reduces tooling weight, convenient for operation.
Certain type aero-engine fuel nozzle, structure are double oil circuits structure；Bottom cup group is equipped in its first oil circuit 11
Part, bottom cup assembly lower part are equipped with cushion rubber, guarantee the sealing of bottom cup assembly and 11 fit-up gap of the first oil circuit；In order to control oil circuit stream
The influence to flow is hindered, needs to test the respective flow Q of two oil circuits under 2MPa1And Q2。
Referring to Fig. 5, a kind of double oil circuits fuel nozzle flow rate test method, comprising the following steps:
Step 1, nozzle ending cover hole 14 is blocked with plug 15；
Step 2, nozzle oil inlet 13 is connect with exerciser connector；
Step 3, exerciser is opened, pressure is adjusted to the pressure P=2MPa of design requirement, measures and flows through the first oil of nozzle
The total flow Q on road 11 and the second oil circuit 12Always；
Step 4, it is depressurized to 0MPa, closes exerciser, it is with double oil circuits fuel nozzle flow rate test tooling that nozzle first is oily
Road 11 is blocked；
Step 5, exerciser is opened, pressure is adjusted to the pressure P=2MPa of design requirement, measures and flows through the second oil of nozzle
12 flow Q of road2；
Step 6, pass through Q1=QAlways-Q2Calculate the flow Q for flowing through the first oil circuit 111。
Referring to Fig. 4, plug 15 used in step 1 is identical with 5 structure of cover board, the difference is that only that plug 15 is solid
Structure, plug 15 are step axle construction, and big axis offers the 4th groove 151 along small axis periphery on the end face of small axis connection, the
It is placed in four grooves 151 for improving the 4th sealing ring of sealing effect, it is ensured that nozzle ending cover hole 14 does not leak during the test
Oil.
Tests prove that the test method can effectively improve test for nozzle flow efficiency and reliability, do not go out
Existing duplex burner alters oily problem, and consistent with nozzle actual working state.
Claims (4)
1. a kind of double oil circuits fuel nozzle flow rate test tooling, it is characterised in that including mandrel (1), mandrel (1) lower end is provided with
For being inserted into fuel nozzle bottom cup assembly (10) block head (2) for blocking the first oil circuit (11), block head (2) lower end periphery is opened
Equipped with the first groove, it is provided in the first groove for realizing fuel nozzle with bottom cup assembly (10) inner hole of fuel nozzle
The first sealing ring (3) of circumferential seal, block head (2) lower end surface offer the second groove, be provided in the second groove for
The second sealing ring of end face seal (4) of bottom cup assembly (10) bottom surface realization fuel nozzle；Mandrel (1) upper end is provided with
For blocking the cover board (5) of nozzle ending cover hole (14) cooperation；
Further include plug (15) identical with cover board (5) structure, the difference is that only that plug (15) are solid construction, plug
(15) for blocking nozzle ending cover hole (14)；
When carrying out flow rate test with the test fixture, comprising the following steps:
Step 1, nozzle ending cover hole (14) is blocked with plug (15)；
Step 2, nozzle oil inlet (13) is connect with exerciser connector；
Step 3, exerciser is opened, pressure is adjusted to the pressure P of design requirement, measures and flows through the first oil circuit of nozzle (11) and the
The total flow Q of two oil circuits (12)Always；
Step 4, it is depressurized to 0MPa, closes exerciser, with double oil circuits fuel nozzle flow rate test tooling by the first oil circuit of nozzle
(11) it blocks；
Step 5, exerciser is opened, pressure is adjusted to the pressure P of design requirement, measures and flows through the second oil circuit of nozzle (12) flow
Q2；
Step 6, pass through Q1=QAlways-Q2Calculate the flow Q for flowing through the first oil circuit (11)1。
2. a kind of double oil circuits fuel nozzle flow rate test tooling according to claim 1, which is characterized in that the cover board
(5) it is hollow step axle construction, including big axis and small axis, offers third groove (51) along small axis outer circle in big axial end,
Third groove is provided with third sealing ring in (51).
3. a kind of double oil circuits fuel nozzle flow rate test tooling according to claim 1, which is characterized in that the mandrel
(1) upper end is provided with handle (6).
4. a kind of double oil circuits fuel nozzle flow rate test tooling according to claim 1, which is characterized in that the mandrel
(1) diameter is less than the diameter of block head (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710899561.3A CN107762699B (en) | 2017-09-28 | 2017-09-28 | A kind of double oil circuits fuel nozzle flow rate test tooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710899561.3A CN107762699B (en) | 2017-09-28 | 2017-09-28 | A kind of double oil circuits fuel nozzle flow rate test tooling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107762699A CN107762699A (en) | 2018-03-06 |
| CN107762699B true CN107762699B (en) | 2019-07-23 |
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ID=61266805
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710899561.3A Active CN107762699B (en) | 2017-09-28 | 2017-09-28 | A kind of double oil circuits fuel nozzle flow rate test tooling |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109489612B (en) * | 2018-11-19 | 2020-07-17 | 北京安达维尔机械维修技术有限公司 | Airplane fuel nozzle spraying angle testing device and method |
| CN112964427A (en) * | 2021-02-09 | 2021-06-15 | 中国航发哈尔滨东安发动机有限公司 | Fuel nozzle and main pipe combined sealing test device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3825832A1 (en) * | 1988-07-29 | 1990-02-01 | Bosch Gmbh Robert | Method for checking the second opening pressure of a double spring nozzle-and-holder assembly |
| CN1656311A (en) * | 2002-03-22 | 2005-08-17 | 克里萨里斯技术公司 | Fuel system for an internal combustion engine |
| CN201740049U (en) * | 2010-08-23 | 2011-02-09 | 中国航空动力机械研究所 | Double-oil way fuel spray nozzle |
| CN103134079A (en) * | 2011-11-30 | 2013-06-05 | 贵州航空发动机研究所 | Double-oil-circuit fuel nozzle |
| CN106091010A (en) * | 2016-06-21 | 2016-11-09 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of engine chamber duplex burner valve |
-
2017
- 2017-09-28 CN CN201710899561.3A patent/CN107762699B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3825832A1 (en) * | 1988-07-29 | 1990-02-01 | Bosch Gmbh Robert | Method for checking the second opening pressure of a double spring nozzle-and-holder assembly |
| CN1656311A (en) * | 2002-03-22 | 2005-08-17 | 克里萨里斯技术公司 | Fuel system for an internal combustion engine |
| CN201740049U (en) * | 2010-08-23 | 2011-02-09 | 中国航空动力机械研究所 | Double-oil way fuel spray nozzle |
| CN103134079A (en) * | 2011-11-30 | 2013-06-05 | 贵州航空发动机研究所 | Double-oil-circuit fuel nozzle |
| CN106091010A (en) * | 2016-06-21 | 2016-11-09 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of engine chamber duplex burner valve |
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| Publication number | Publication date |
|---|---|
| CN107762699A (en) | 2018-03-06 |
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