CN112082872A - Fuel manifold sealing method and device - Google Patents
Fuel manifold sealing method and device Download PDFInfo
- Publication number
- CN112082872A CN112082872A CN202010946441.6A CN202010946441A CN112082872A CN 112082872 A CN112082872 A CN 112082872A CN 202010946441 A CN202010946441 A CN 202010946441A CN 112082872 A CN112082872 A CN 112082872A
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- China
- Prior art keywords
- sealing
- mounting groove
- fuel
- shaped frame
- hole
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000000446 fuel Substances 0.000 title claims description 37
- 239000007921 spray Substances 0.000 claims abstract description 43
- 239000003921 oil Substances 0.000 claims abstract description 22
- 238000003466 welding Methods 0.000 claims abstract description 19
- 238000002347 injection Methods 0.000 claims abstract description 12
- 239000007924 injection Substances 0.000 claims abstract description 12
- 239000000295 fuel oil Substances 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 27
- 229910052802 copper Inorganic materials 0.000 claims description 27
- 239000010949 copper Substances 0.000 claims description 27
- 239000000203 mixture Substances 0.000 claims 1
- 239000002994 raw material Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 2
- 238000009795 derivation Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses a fuel oil main pipe sealing method and a device, wherein the device comprises an arc-shaped frame, a pressing block, a tightening screw and a ball or a sealing cone for plugging a sealing oil injection hole, wherein one tail end of the arc-shaped frame is provided with a threaded through hole, and the other tail end of the arc-shaped frame is provided with a first mounting groove; the end surface of the pressing block is provided with a second mounting groove; the tightening screw penetrates through the threaded through hole in the arched frame and then is connected with one end of the pressing block; the ball or the sealing cone has two, one of them is removable connected in first mounting groove, and another is removable connected in the second mounting groove. During the test, with bow-shaped frame clamping on the spray lance, according to the position of support and welding seam and the structure assembly different spheroid of nozzle opening and sealed awl, the shutoff and the sealing of final completion nozzle opening avoid the interference problem of welding seam and support.
Description
Technical Field
The invention belongs to the technical field of hydraulic tests of pipe type parts of aero-engines, and particularly relates to a sealing device and a sealing method for a hydraulic test of a fuel oil main pipe.
Background
As shown in figure 1, the fuel main pipe used for the aircraft engine is formed by connecting parts such as a bent and coiled pipe, a joint, a spray rod, a support and the like in a welding mode, the structure shown in figure 1 shows that the positions of an oil spray hole on the spray rod and a welding line are very close, a connecting plate (support) is welded on the spray rod, the pressure required by a hydraulic test is up to 14.7MPa, and the problem that sealing is difficult in the hydraulic test is caused.
The key factors of the hydraulic test of the parts are that the distance between a welding line and an oil spray hole is too small, the distance between the oil spray hole and a bracket is also very close, and the test pressure is large; the problem of the sealed reasonable device of must designing of part spray lance nozzle orifice is solved, effectively avoid welding seam and support, and possess the intensity that will satisfy under the high pressure state and use. In order to achieve the purpose of processing qualified parts, a related test device and a related test method are urgently required to be found out so as to meet the requirements of development.
Disclosure of Invention
The invention aims to provide a novel method and a novel device for sealing an oil spray hole of a spray rod of a fuel main pipe, and solves the technical bottleneck problem that the spray rod is difficult to seal in a hydraulic test.
The technical scheme of the invention is as follows:
a fuel manifold sealing device comprises a fuel manifold sealing device,
the mounting structure comprises a bow-shaped frame, a first mounting groove and a second mounting groove, wherein one tail end of the bow-shaped frame is provided with a threaded through hole, and the other tail end of the bow-shaped frame is provided with the first mounting groove;
the end surface of the pressing block is provided with a second mounting groove;
the tightening screw penetrates through the threaded through hole in the arched frame and then is connected with one end of the pressing block;
a spheroid or sealed awl for shutoff sealed nozzle opening, spheroid or sealed awl have two, and one of them can dismantle the connection in first mounting groove, and another can dismantle the connection in the second mounting groove.
Preferably, an avoiding groove is formed in one side of the first mounting groove on the bow-shaped frame.
Preferably, the fuel manifold sealing device further comprises sealing gaskets, the sealing gaskets are respectively located in the first installation groove and the second installation groove, and the sealing gaskets are located on the outer circumference of the ball body or the sealing cone.
Preferably, the sphere is a copper sphere, the outer diameter of the copper sphere is larger than the aperture of the oil spray hole, the sealing cone comprises a cylindrical base body, and the upper end of the cylindrical base body is a copper cone.
A fuel main pipe sealing method is characterized in that a plurality of fuel injection holes and at least one support are formed in the surface of a spray rod on a fuel main pipe, the fuel injection holes in the surface of the spray rod are sealed and sealed one by clamping a plurality of arc-shaped frames along the length direction of the spray rod, when the support interferes with the arc-shaped frames, the fuel main pipe sealing device with avoidance grooves is adopted, and the support is located in the avoidance grooves of the arc-shaped frames.
A fuel main pipe sealing method is characterized in that a plurality of fuel injection holes are formed in the surface of a spray rod on a fuel main pipe, at least one fuel injection hole is close to a welding line, the fuel injection holes in the surface of the spray rod are sealed one by clamping a plurality of arc-shaped frames along the length direction of the spray rod by adopting the fuel main pipe sealing device, a sealing cone is installed in a first installation groove of the arc-shaped frame closest to the welding line, or the sealing cone is installed in a second installation groove of the arc-shaped frame closest to the welding line, or the sealing cone is installed in the first installation groove and.
The basic sealing principle of the invention is that the spray rod is clamped by the bow-shaped frame, then the oil nozzle is pressed by the sealing elements (spheres or sealing cones) at the two tail ends of the bow-shaped frame, the derivation mechanism of the sealing elements is a screw tightening mechanism, and the oil nozzle on the spray rod is clamped by the sealing elements on the bow-shaped frame through rotating thread matching. The avoidance groove on the arched frame can avoid the interference problem of the bracket, and the sealing cone can solve the interference problem with the welding seam.
The sealing structure is simple, can avoid the influence of the bracket and the welding line on the sealing through different combination forms, and has high assembly efficiency and good sealing effect.
Drawings
FIG. 1 is a top plan view of a fuel manifold assembly;
FIG. 2 is a partial schematic view of the fuel manifold at the location of the nozzle;
FIG. 3 is a schematic sealing diagram of a sealing device for sealing the sealing nozzle;
fig. 4 is a schematic diagram of the bow in the case of sealing with a ball and a sealing cone.
Detailed Description
The invention will be further described with reference to the following drawings and specific examples:
as shown in fig. 1 and 2, the structure of the main fuel pipe nozzle to be sealed is characterized in that the distance between the fuel injection hole and the welding line is small, the distance between the fuel injection hole and the support is small, and the welding line 6 and the support 7 need to be effectively avoided when the fuel injection hole is sealed, so that the sealing effect is not influenced by interference.
In order to complete the hydraulic test of the fuel manifold shown in fig. 1 and 2, a set of sealing device and sealing method is designed in the embodiment.
In this embodiment, the structural characteristics of the fuel manifold sealing device during the hydraulic test are as follows: the sealing device comprises an arc-shaped frame 1, a copper sphere 4 or a copper sealing cone 5 for sealing, a tightening screw 3, a pressing block 2, the copper sphere 4 or the copper sealing cone 5 arranged on the pressing block 2, a sealing washer 8 and the like, wherein the copper sphere 4 or the copper sealing cone 5 for sealing is arranged on the arc-shaped frame 1; a spheroid 4 or sealed awl 5 for the sealed nozzle opening of shutoff has two, and one of them can be dismantled and connect in first mounting groove, and another can be dismantled and connect in the second mounting groove, and when needs, on bow-shaped rack 1 and open on one side of first mounting groove has the groove of dodging. The assembled schematic of the device is shown in figure 4.
When the oil spray holes on two sides of the bracket 7 need to be sealed: the avoidance groove structure of the arched frame 1 is utilized to just avoid the spray rod and the support 7, no interference is guaranteed when the installation is carried out between the arched frame 1 and the spray rod, the arched frame 1 and the press block 2 are provided with the soft copper ball 4 (see a left drawing of figure 3), the copper ball 4 can be assembled and disassembled according to actual conditions, if the oil spray hole is a through hole, the copper ball 4 is required to be installed in the first installation groove and the second installation groove, otherwise, the copper ball 4 in the first installation groove is disassembled, the outer diameter of the copper ball 4 is determined according to the size of the oil spray hole, the diameter of the oil spray hole is required to be larger than that of the oil spray hole, namely, the oil spray hole is blocked by the copper ball 4 during sealing, the sealing gasket 8 can be installed in the surrounding space of the copper ball 4, if the copper ball 4 cannot be effectively sealed, the sealing gasket 8 plays a role at the moment, so that the sealing effect is better, the function of double insurance is achieved, the, make the device can install smoothly, the during operation is twisted and is screwed up screw 3, promotes briquetting 2 for be located the contact of copper spheroid 4 and the nozzle opening of second mounting groove and compress tightly sealedly.
When the oil spray hole beside the welding line 6 needs to be sealed, the arc-shaped frame 1 needs to be avoided from the welding line 6, and the interference condition is not allowed during assembly, so that the sealing device on the arc-shaped frame 1 adopts a copper sealing cone 5 structure (see a right picture of fig. 4), the interference between the welding line 6 and the device is effectively avoided, and the other structures and methods are consistent with those of the copper ball 4 during sealing.
As shown in fig. 4, the assembly of the bracket 1 on the boom takes place according to the following steps:
(1) connecting a fuel inlet nozzle of a fuel main pipe to a tester;
(2) correspondingly installing the cambered frames 1 on the oil spray holes according to the principle that the position of one oil spray hole corresponds to one cambered frame 1;
(3) according to the specific conditions of the oil spray hole (opposite-penetrating hole or single-face hole, close to the support 7 or close to the welding line 6), assembling a copper ball 4 or a copper sealing cone 5 in the first mounting groove and the second mounting groove on the arched frame 1, and ensuring that the copper ball 4 or the copper sealing cone 5 is aligned with the oil spray hole;
(4) if necessary, the sealing gaskets 8 in the first mounting groove and the second mounting groove on the bow 1 are installed and adjusted;
(5) the screw 3 is screwed and tightened;
(6) the tester was started and tested.
The above is one of the embodiments of the present invention, and a person skilled in the art can make various changes on the basis of the above embodiments to achieve the object of the present invention, but such changes should obviously be within the scope of the claims of the present invention.
Claims (6)
1. A fuel manifold seal assembly, comprising: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the mounting structure comprises a bow-shaped frame (1), wherein one tail end of the bow-shaped frame (1) is provided with a threaded through hole, and the other tail end of the bow-shaped frame is provided with a first mounting groove;
the end face of the pressing block (2) is provided with a second mounting groove;
the tightening screw (3) penetrates through the threaded through hole in the arched frame (1) and then is connected with one end of the pressing block (2);
the ball body (4) or the sealing cone (5) is used for plugging the sealing oil injection hole, the number of the ball body (4) or the sealing cone (5) is two, one of the ball body (4) or the sealing cone is detachably connected in the first mounting groove, and the other ball body (5) or the sealing cone is detachably connected in the second mounting groove.
2. A fuel manifold seal assembly as set forth in claim 1 wherein: an avoiding groove is formed in one side of the first mounting groove on the bow-shaped frame (1).
3. A fuel manifold seal assembly as set forth in claim 1 wherein: still include seal ring (8), seal ring (8) are located first mounting groove and second mounting groove respectively, and seal ring (8) are located the outside circumference of spheroid (4) or sealed awl (5).
4. A fuel manifold seal assembly as set forth in claim 1 wherein: the ball body (4) is a copper ball body, the outer diameter of the copper ball body is larger than the aperture of the oil spray hole, the sealing cone (5) comprises a cylindrical base body, and the upper end of the cylindrical base body is a copper cone.
5. A method of sealing a fuel rail having a plurality of spray holes and at least one support (7) on a spray bar surface, comprising: the fuel main pipe sealing device of claim 1 is adopted, a plurality of cambered frames (1) are clamped along the length direction of the spray rod to block and seal the oil spray holes on the surface of the spray rod one by one, when the support (7) is interfered with the cambered frames (1), the fuel main pipe sealing device of claim 2 is adopted, and the support (7) is positioned in an avoiding groove of the cambered frames (1).
6. A fuel oil main pipe sealing method is characterized in that a plurality of fuel oil injection holes are formed in the surface of a spray rod on a fuel oil main pipe, and at least one fuel oil injection hole is close to a welding line (6), and the method comprises the following steps: the fuel manifold sealing device as claimed in claim 1 is adopted, a plurality of segmental brackets (1) are clamped along the length direction of the spray rod to block and seal the fuel spray holes on the surface of the spray rod one by one, wherein a sealing cone (5) is arranged in a first mounting groove of the segmental bracket (1) closest to the welding seam (6) or a sealing cone (5) is arranged in a second mounting groove or the sealing cones are simultaneously arranged in the first mounting groove and the second mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010946441.6A CN112082872A (en) | 2020-09-10 | 2020-09-10 | Fuel manifold sealing method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010946441.6A CN112082872A (en) | 2020-09-10 | 2020-09-10 | Fuel manifold sealing method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112082872A true CN112082872A (en) | 2020-12-15 |
Family
ID=73733077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010946441.6A Pending CN112082872A (en) | 2020-09-10 | 2020-09-10 | Fuel manifold sealing method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112082872A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2634246Y (en) * | 2003-07-12 | 2004-08-18 | 中国石化胜利油田有限公司胜利采油厂 | Quick live pressure blocking bow-shape fastener |
| CN201187661Y (en) * | 2008-04-17 | 2009-01-28 | 中国石油天然气股份有限公司 | Wedge type plugging machine |
| CN201344007Y (en) * | 2009-02-04 | 2009-11-11 | 魏峰 | Automatic positioning clamp |
| CN202001775U (en) * | 2011-01-31 | 2011-10-05 | 林海 | Online monitoring type plugging device |
| CN102954917A (en) * | 2011-08-31 | 2013-03-06 | 林州重机集团股份有限公司 | Device for checking welded joint of plunger |
| CN203375087U (en) * | 2013-07-12 | 2014-01-01 | 天津金恒伟创科技有限公司 | Mechanical rapid leaking stopper under temperature and pressure |
| CN204459603U (en) * | 2014-12-18 | 2015-07-08 | 中国石油天然气股份有限公司 | A kind of pipeline welding plugging device |
| CN107631027A (en) * | 2017-11-02 | 2018-01-26 | 苏州东风精冲工程有限公司 | A kind of reverse speed fork offset drives locking structure |
| CN107870066A (en) * | 2017-11-10 | 2018-04-03 | 中国航发贵州黎阳航空动力有限公司 | Fuel manifold Thermal Transient Sealing Test device |
| CN207527206U (en) * | 2017-11-03 | 2018-06-22 | 天津二建水电安装工程有限公司 | A kind of pipe leakage emergency treatment device |
| CN209856651U (en) * | 2019-04-12 | 2019-12-27 | 盘锦承成科技开发有限公司 | Plugging device for pipeline leakage |
| CN210426374U (en) * | 2019-06-29 | 2020-04-28 | 德州三嘉机器制造有限公司 | Measuring head floating type deep hole and inner groove measuring device |
| CN210622759U (en) * | 2019-09-27 | 2020-05-26 | 中石化石油工程技术服务有限公司 | Self-locking type oil pipe blanking plug |
-
2020
- 2020-09-10 CN CN202010946441.6A patent/CN112082872A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2634246Y (en) * | 2003-07-12 | 2004-08-18 | 中国石化胜利油田有限公司胜利采油厂 | Quick live pressure blocking bow-shape fastener |
| CN201187661Y (en) * | 2008-04-17 | 2009-01-28 | 中国石油天然气股份有限公司 | Wedge type plugging machine |
| CN201344007Y (en) * | 2009-02-04 | 2009-11-11 | 魏峰 | Automatic positioning clamp |
| CN202001775U (en) * | 2011-01-31 | 2011-10-05 | 林海 | Online monitoring type plugging device |
| CN102954917A (en) * | 2011-08-31 | 2013-03-06 | 林州重机集团股份有限公司 | Device for checking welded joint of plunger |
| CN203375087U (en) * | 2013-07-12 | 2014-01-01 | 天津金恒伟创科技有限公司 | Mechanical rapid leaking stopper under temperature and pressure |
| CN204459603U (en) * | 2014-12-18 | 2015-07-08 | 中国石油天然气股份有限公司 | A kind of pipeline welding plugging device |
| CN107631027A (en) * | 2017-11-02 | 2018-01-26 | 苏州东风精冲工程有限公司 | A kind of reverse speed fork offset drives locking structure |
| CN207527206U (en) * | 2017-11-03 | 2018-06-22 | 天津二建水电安装工程有限公司 | A kind of pipe leakage emergency treatment device |
| CN107870066A (en) * | 2017-11-10 | 2018-04-03 | 中国航发贵州黎阳航空动力有限公司 | Fuel manifold Thermal Transient Sealing Test device |
| CN209856651U (en) * | 2019-04-12 | 2019-12-27 | 盘锦承成科技开发有限公司 | Plugging device for pipeline leakage |
| CN210426374U (en) * | 2019-06-29 | 2020-04-28 | 德州三嘉机器制造有限公司 | Measuring head floating type deep hole and inner groove measuring device |
| CN210622759U (en) * | 2019-09-27 | 2020-05-26 | 中石化石油工程技术服务有限公司 | Self-locking type oil pipe blanking plug |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201215 |
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| RJ01 | Rejection of invention patent application after publication |