CN113958378A - Pipeline structure penetrating through three layers of casings - Google Patents
Pipeline structure penetrating through three layers of casings Download PDFInfo
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- CN113958378A CN113958378A CN202111265452.9A CN202111265452A CN113958378A CN 113958378 A CN113958378 A CN 113958378A CN 202111265452 A CN202111265452 A CN 202111265452A CN 113958378 A CN113958378 A CN 113958378A
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- floating sleeve
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- sleeve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/06—Fluid supply conduits to nozzles or the like
- F01D9/065—Fluid supply or removal conduits traversing the working fluid flow, e.g. for lubrication-, cooling-, or sealing fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0406—Details thereof
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0462—Tubings, i.e. having a closed section
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Gasket Seals (AREA)
- Pipeline Systems (AREA)
Abstract
The application provides a pass pipeline structure of three-layer machine casket, it includes: a pipeline; an inner casing; the middle layer casing is sleeved on the radial outer side of the inner layer casing; the outer-layer casing is sleeved on the radial outer side of the middle-layer casing; the pipeline structure penetrating through the three-layer casing further comprises: the middle layer floating sleeve is connected to the middle layer casing, and a pipeline penetrates through the middle layer floating sleeve; and the outer floating sleeve is connected to the outer casing, the middle floating sleeve is sleeved on the outer floating sleeve, the middle floating sleeve and the outer floating sleeve can move relatively along the axial direction of the pipeline, the pipeline comprises a first pipeline and a second pipeline, one end of the first pipeline is connected to the inner casing, the other end of the first pipeline is sleeved on the second pipeline, the second pipeline is connected to the outer floating sleeve, and the first pipeline and the second pipeline can move relatively along the axial direction of the pipeline.
Description
Technical Field
The application belongs to the field of aero-engines, and particularly relates to a pipeline structure penetrating through a three-layer casing.
Background
The variable cycle aero-engine has many advantages over the traditional fixed cycle aero-engine, with the increasing level of aero-engine design, engine cycles and structures are continuously proposed and evolved, and the variable cycle propulsion aero-engine is gradually used for main warfare aircraft power.
Compared with a variable-cycle engine, the self-adaptive variable-cycle engine is additionally provided with the outer duct on the basis of the double-outer-duct variable-cycle engine, the variation range of the engine duct ratio can be further improved by the aid of the added outer duct, the comprehensive performance of the engine in a covered line is optimized, the overflow resistance is reduced, and the problem of separation of a boundary layer of an air inlet can be solved. The outer duct has small airflow pressurization, low temperature and sufficient flow, is an ideal cold source, does not interfere the work of a core engine, is suitable for providing sufficient cooling capacity, can provide effective cooling for laser weapons, airplane bodies and the like, and enhances the stealth performance of airplanes.
Compared with the conventional turbofan engine, the number of layers of pipelines penetrating through the casing is increased due to the added outer duct of the self-adaptive variable-cycle engine, so that the adaptability problems of assembly and sealing are brought, the deformation coordination of the three-layer casing is required to be considered, and the working reliability of the pipelines is also required to be considered.
Disclosure of Invention
The application aims at providing a pipeline structure passing through three layers of casings, so that the assembly of the pipeline is realized, the pipeline can adapt to the deformation of different casings, the stress of the pipeline is reduced, the sealing requirement of the pipeline is met, and the working reliability of the pipeline is improved.
The application proposes a pipeline structure who passes three-layer machine casket, the pipeline structure who passes three-layer machine casket includes:
a pipeline;
an inner casing;
the middle layer casing is sleeved on the radial outer side of the inner layer casing; and
the outer-layer casing is sleeved on the radial outer side of the middle-layer casing; it is characterized in that the preparation method is characterized in that,
the pipeline structure penetrating through the three-layer casing further comprises:
the middle layer floating sleeve is connected to the middle layer casing, and the pipeline penetrates through the middle layer floating sleeve; and
the outer-layer floating sleeve is connected to the outer-layer casing, the middle-layer floating sleeve is sleeved on the outer-layer floating sleeve, the middle-layer floating sleeve and the outer-layer floating sleeve can move relatively along the axial direction of a pipeline,
the pipeline includes first pipeline and second pipeline, the one end of first pipeline connect in inlayer machine casket, the other pot head of first pipeline is located the second pipeline, the second pipeline connect in outer floating sleeve, first pipeline with the second pipeline can be followed the axial relative activity of pipeline.
Preferably, the pipeline structure passing through the three-layer casing further comprises a middle layer flange cover plate connected to the middle layer casing, the middle layer flange cover plate is provided with a middle layer flange cover plate groove, the middle layer floating sleeve comprises a middle layer floating sleeve mounting part and a middle layer floating sleeve sealing part,
the middle layer floating sleeve installation part is accommodated in the middle layer flange cover plate groove, the outer diameter of the middle layer flange cover plate groove is larger than that of the middle layer floating sleeve installation part, so that the middle layer floating sleeve installation part can be arranged along the radial direction of the pipeline movably connected with the middle layer casing.
Preferably, the pipeline structure penetrating through the three-layer casing further comprises an outer-layer flange cover plate, the outer-layer flange cover plate is connected to the outer-layer casing, an outer-layer flange cover plate groove is formed in the outer-layer flange cover plate, the outer-layer floating sleeve comprises an outer-layer floating sleeve mounting part and an outer-layer floating sleeve sealing part,
outer floating sleeve installation department hold in outer flange cover recess, the external diameter of outer flange cover recess is greater than the external diameter of outer floating sleeve installation department makes outer floating sleeve installation department can follow the radial swing joint in of pipeline in outer quick-witted casket.
Preferably, the outer peripheral surface of the first pipeline is provided with a sleeve tooth part, the inner peripheral surface of the outer layer floating sleeve sealing part is provided with a sleeve tooth matching part, and the sleeve tooth part is matched with the sleeve tooth matching part, so that the first pipeline is coaxially connected with the outer layer floating sleeve.
Preferably, a first sealing ring is arranged between the middle layer floating sleeve and the outer layer floating sleeve.
Preferably, a second sealing ring is arranged between the first pipeline and the second pipeline.
Preferably, a third sealing ring is arranged between the second pipeline and the outer layer floating sleeve sealing part.
Preferably, the outer floating sleeve sealing portion is provided with a sealing engagement portion protruding from an inner circumferential surface of the outer floating sleeve sealing portion, and the sealing engagement portion is engaged with the third sealing ring.
Preferably, the pipeline structure penetrating through the three-layer casing further comprises a fastening bolt, the fastening bolt is provided with a central hole, the fastening bolt is sleeved on the second pipeline, and the fastening bolt is screwed on the sealing portion of the outer-layer floating sleeve, so that the second pipeline is fixedly connected with the outer-layer floating sleeve.
Preferably, the outer peripheral surface of the second pipeline is provided with a first convex limiting part, the inner peripheral surface of the fastening bolt is provided with a second convex limiting part, the first limiting part and the second limiting part are matched to limit the second pipeline to move along the axial line of the second pipeline to the radial outer side of the casing relative to the outer layer floating sleeve,
the outer peripheral surface of the second pipeline is provided with a third raised limiting part, the inner peripheral surface of the outer layer floating sleeve sealing part is provided with a fourth raised limiting part, and the third limiting part is matched with the fourth limiting part to limit the second pipeline to move towards the radial inner side of the casing relative to the outer layer floating sleeve along the axis of the second pipeline.
Preferably, outer floating sleeve installation department is provided with the frock hole, outer flange cover with outer quick-witted casket be provided with frock hole complex hole can make through frock bolt or frock pin outer floating sleeve with the relative position of outer quick-witted casket is fixed.
By adopting the technical scheme, the first pipeline and the second pipeline which penetrate through the pipeline structure of the casing can move relatively along the axial direction of the pipeline, so that the deformation of the casing is compensated, and the stress of the pipeline is reduced as much as possible.
Drawings
FIG. 1 shows a schematic view of a piping structure through a three-layer casing according to an embodiment of the present application.
Fig. 2 shows a schematic view of another angle of the piping structure through the three-layer casing according to an embodiment of the present application.
FIG. 3 illustrates a cross-sectional view of a piping structure through a three-layer casing according to an embodiment of the present application.
Fig. 4 shows a partial enlarged view of fig. 3.
Fig. 5 shows a schematic view of a first pipeline of the pipeline structure through a three-layer casing according to an embodiment of the present application.
Fig. 6 shows a schematic structural view of a second pipeline of the pipeline structure through the three-layer casing according to an embodiment of the present application.
FIG. 7 illustrates a schematic structural view of an outer floating sleeve through a piping structure of a three-layer casing according to an embodiment of the present application.
Fig. 8 shows a schematic structural view of a fastening bolt passing through a piping structure of a three-layer casing according to an embodiment of the present application.
Description of the reference numerals
100 inner casing 101 inner casing 201 middle casing mounting base 300 outer casing 301 outer casing mounting base
1 pipeline 11 first pipeline 111 flange 112 cover tooth portion 12 second pipeline 121 second sealing ring mounting portion 1211 second sealing ring 122 third sealing ring mounting portion 1221 third sealing ring 123 first limiting portion 124 third limiting portion
2 intermediate layer floating sleeve 21 intermediate layer floating sleeve mounting part 22 intermediate layer floating sleeve sealing part
3 middle layer flange cover plate 31 middle layer flange cover plate groove
4 outer layer floating sleeve 41 outer layer floating sleeve mounting 42 outer layer floating sleeve sealing 43 first sealing ring mounting 431 first sealing ring 44 sleeve tooth mating part 45 sealing mating part 46 fourth limiting part
5 outer layer flange cover plate 51 outer layer flange cover plate groove
6 the head 62 and the shaft 63 of the fastening bolt 61 are provided with second limit parts.
Detailed Description
In order to more clearly illustrate the above objects, features and advantages of the present application, a detailed description of the present application is provided in this section in conjunction with the accompanying drawings. This application is capable of embodiments in addition to those described herein, and is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this application pertains and which fall within the limits of the appended claims. The protection scope of the present application shall be subject to the claims.
As shown in fig. 1 to 8, the present application provides a pipeline structure passing through a three-layer casing, which includes a pipeline 1, a middle-layer floating sleeve 2, a middle-layer flange cover plate 3, an outer-layer floating sleeve 4, an outer-layer flange cover plate 5, fastening bolts 6, an inner-layer casing 100, a middle-layer casing 200, and an outer-layer casing 300.
As shown in fig. 1 to 4, the inner casing 100, the middle casing 200, and the outer casing 300 are all cylindrical, and they may be casings of aircraft engines, the middle casing 200 is sleeved on the radial outer side of the inner casing 100, and the outer casing 300 is sleeved on the radial outer side of the middle casing 200. Between the two casings is a duct of the engine, wherein the space between the outer casing 300 and the middle casing 200 is an outer duct of the engine.
One end of the pipeline 1 is connected to the inner casing 100, the pipeline 1 penetrates through the middle casing 200, the other end of the pipeline 1 penetrates through the outer casing 300, and the pipeline 1 can be used for air bleed or cable arrangement. The space radially outside the outer casing 300 and the space radially inside the inner casing 100 are communicated through the pipe 1. The line 1 may comprise a first line 11 and a second line 12, the first line 11 and the second line 12 being two separate parts which may be separated. In the present embodiment, the first pipe 11 may extend along a curve, and the second pipe 12 may extend along a straight line.
As shown in fig. 1 to 5, an inner casing mounting seat 101 is provided on an outer circumferential surface of the inner casing 100, and the inner casing mounting seat 101 is provided with a through hole penetrating the inner casing 100. One end of the first pipeline 11 is connected to the inner casing mounting seat 101, and one end of the first pipeline 11 may be provided with a flange 111, and the first pipeline 11 is connected to the inner casing mounting seat 101 through the flange 111. At least at the other end of the first pipeline 11, the inner diameter of the first pipeline 11 is larger than the outer diameter of the second pipeline 12, so that the first pipeline 11 is sleeved at the other end of the second pipeline 12.
The first pipeline 11 is provided with a set tooth part 112, the set tooth part 112 is located at the other end of the first pipeline 11, the set tooth part 112 protrudes from the outer peripheral surface of the first pipeline 11, and the set tooth part 112 is used for connecting the first pipeline 11 and the outer floating sleeve 4 in a matching manner.
As shown in fig. 3 and 4, the middle layer casing 200 is provided with a middle layer casing mounting seat 201, the middle layer casing mounting seat 201 is provided with a through hole penetrating through the middle layer casing 200, and the middle layer casing mounting seat 201 is used for mounting the middle layer floating sleeve 2.
The intermediate layer floating sleeve 2 is connected to the intermediate layer casing 200 by means of an intermediate layer flange cover 3, so that the intermediate layer floating sleeve 2 can be moved relative to the intermediate layer casing 200, in particular in the radial direction of the intermediate layer floating sleeve 2.
As shown in fig. 4, the intermediate layer floating sleeve 2 includes an intermediate layer floating sleeve mounting portion 21 and an intermediate layer floating sleeve sealing portion 22, and the intermediate layer floating sleeve mounting portion 21 and the intermediate layer floating sleeve sealing portion 22 are connected together. The intermediate layer floating sleeve mounting portion 21 may be a circular ring-shaped sheet, the intermediate layer floating sleeve sealing portion 22 may be a cylindrical shape, and the intermediate layer floating sleeve sealing portion 22 may extend from an inner peripheral portion of the intermediate layer floating sleeve mounting portion 21 to a radially outer side of the intermediate layer casing 200. The intermediate layer floating sleeve mounting portion 21 and the intermediate layer floating sleeve sealing portion 22 may be integrally molded.
The middle layer flange cover plate 3 can be in a sheet shape, the middle layer flange cover plate 3 is provided with a central hole, and the middle layer floating sleeve 2 can penetrate through the central hole. The center hole has an inner diameter larger than an outer diameter of the intermediate layer floating sleeve sealing portion 22 so that the intermediate layer floating sleeve 2 can move in the center hole in the radial direction of the intermediate layer floating sleeve 2.
The intermediate layer flange cover 3 is provided with an intermediate layer flange cover groove 31, and the intermediate layer flange cover groove 31 may be annular. The intermediate layer flange cover plate 3 covers the intermediate layer floating sleeve mounting part 21, and the intermediate layer flange cover plate 3 is fixedly connected to the intermediate layer casing 200. The intermediate layer floating sleeve mounting portion 21 is located in the intermediate layer flange cover groove 31, and the outer diameter of the intermediate layer flange cover groove 31 is larger than the outer diameter of the intermediate layer floating sleeve mounting portion 21, so that the intermediate layer floating sleeve mounting portion 21 can move in the intermediate layer flange cover groove 31, and particularly the intermediate layer floating sleeve mounting portion 21 can move in the radial direction of the intermediate layer floating sleeve 2.
Alternatively, the end of the intermediate layer floating sleeve seal portion 22 is formed in a divergent flare shape so that the outer layer floating sleeve 4 is easily inserted into the intermediate layer floating sleeve seal portion 22.
Alternatively, the intermediate layer floating sleeve mounting portion 21 and the intermediate layer flange cover plate groove 31 are in clearance fit in the axial direction of the intermediate layer floating sleeve 2, in other words, the thickness of the intermediate layer flange cover plate groove 31 may be greater than or equal to the thickness of the intermediate layer floating sleeve mounting portion 21, and the intermediate layer flange cover plate 3 does not press the intermediate layer floating sleeve mounting portion 21, so that the intermediate layer floating sleeve mounting portion 21 is easily movable.
As shown in fig. 4 and 7, the outer casing 300 is provided with an outer casing mounting seat 301, the outer casing mounting seat 301 is provided with a through hole penetrating through the outer casing 300, and the outer casing mounting seat 301 is used for mounting the outer floating sleeve 4.
The outer floating sleeve 4 is connected to the outer casing 300 by an outer flange cover 5, so that the outer floating sleeve 4 can move relative to the outer casing 300, in particular, in the radial direction of the outer floating sleeve 4.
Outer floating sleeve 4 includes an outer floating sleeve mounting portion 41 and an outer floating sleeve sealing portion 42, where outer floating sleeve mounting portion 41 and outer floating sleeve sealing portion 42 are connected together, and outer floating sleeve mounting portion 41 and outer floating sleeve sealing portion 42 may be integrally formed. The outer floating sleeve mounting portion 41 may be a circular ring-shaped sheet, the outer floating sleeve sealing portion 42 may be a cylindrical shape, and the outer floating sleeve sealing portion 42 may extend from the inner periphery of the outer floating sleeve mounting portion 41 to the radially inner side of the casing.
The outer layer flange cover plate 5 can be in a sheet shape, the outer layer flange cover plate 5 is provided with a central hole, and the outer layer floating sleeve 4 can penetrate through the central hole. The inner diameter of the central bore is larger than the outer diameter of the outer floating sleeve seal 42 so that the outer floating sleeve 4 can move radially of the outer floating sleeve 4 within the central bore.
The outer blind flange 5 is provided with an outer blind flange recess 51, and the outer blind flange recess 51 may be annular. The outer flange cover 5 is pressed on the outer floating sleeve mounting portion 41, and the outer flange cover 5 is fixedly connected to the outer casing 300. Outer floating sleeve mount 41 is located within outer flange cover recess 51 and is movable within outer flange cover recess 51, and in particular outer floating sleeve mount 41 is movable in a radial direction of outer floating sleeve 4.
Alternatively, the outer floating sleeve mounting portion 41 and the outer flange cover recess 51 may be clearance fitted in the axial direction of the outer floating sleeve 4, in other words, the thickness of the outer flange cover recess 51 may be greater than or equal to the thickness of the outer floating sleeve mounting portion 41, and the outer floating sleeve mounting portion 41 is not pressed by the outer flange cover 4, so that the outer floating sleeve mounting portion 41 is easily moved.
As shown in fig. 4, the outer floating sleeve mounting portion 41 is provided with one or more tool holes, the tool holes are through holes, the outer flange cover plate 5 and the outer casing 300 are provided with holes matched with the tool holes, and the relative positions of the outer floating sleeve 4 and the outer casing 300 can be fixed by inserting tool bolts or tool pins into the three holes. When the pipeline structure passing through the three-layer casing is disassembled and assembled, a tool bolt (or a tool pin) is installed, so that the relative positions of the outer-layer floating sleeve 4 and the outer-layer casing 300 are fixed, and the pipeline structure cannot be damaged due to torque applied when the fastening bolt 6 is disassembled and assembled. It is understood that the tooling holes are only used for fixing the outer floating sleeve 4 and the outer casing 300 during the assembling and disassembling process, and the tooling bolts (or tooling pins) are not installed during the use process, so the tooling bolts (or tooling pins) are not shown in fig. 4.
As shown in fig. 4 and 7, the inner peripheral surface of the outer floating sleeve sealing portion 42 is provided with a set tooth fitting portion 44, and the set tooth fitting portion 44 is fitted with the set tooth portion 112, so that the first pipeline 11 and the outer floating sleeve 4 are firmly fixed. For example, the set tooth portion 112 may be a projection and the set tooth mating portion 44 may be a groove.
As shown in fig. 4 and 6, the outer layer floating sleeve seal 42 has an outer diameter smaller than the inner diameter of the intermediate layer floating sleeve seal 22, and the outer layer floating sleeve seal 42 passes through the intermediate layer floating sleeve seal 22. The outer peripheral surface of the outer floating sleeve 4 is provided with a first seal ring mounting portion 43, the first seal ring mounting portion 43 is provided with a first seal ring 431, the first seal ring 431 is provided between the intermediate floating sleeve 2 and the outer floating sleeve 4, and a gap between the intermediate floating sleeve 2 and the outer floating sleeve 4 can be sealed by the first seal ring 431.
As shown in fig. 4 and 6, the second pipe 12 has an outer diameter smaller than the inner diameter of the outer floating sleeve seal 42, and the second pipe 12 is inserted into the outer floating sleeve seal 42. The outer peripheral surface of the second pipe 12 includes a second seal ring mounting portion 121 and a third seal ring mounting portion 122.
The second sealing ring installation part 121 may be located at an end of the second pipe line 12, the second sealing ring installation part 121 is installed with a second sealing ring 1211, the second sealing ring 1211 is located between the first pipe line 11 and the second pipe line 12, and a gap between the first pipe line 11 and the second pipe line 12 may be sealed by the second sealing ring 1211.
The third seal ring installation portion 122 may be located at a substantially middle portion of the second pipe 12, the third seal ring installation portion 122 is provided with a third seal ring 1221, the third seal ring 1221 is located between the second pipe 12 and the outer floating sleeve seal portion 42, and a gap between the second pipe 12 and the outer floating sleeve seal portion 42 may be sealed by the third seal ring 1221.
Alternatively, as shown in fig. 4 and 6, the inner peripheral surface of the outer floating sleeve sealing portion 42 is provided with a raised seal fitting portion 45, and the seal fitting portion 45 and the third seal ring 1221 are fitted so that the third seal ring 1221 can be pressed into better contact with the outer floating sleeve sealing portion 42.
The outer peripheral surface of the second pipeline 12 is provided with a first protruding limiting portion 123, and the first limiting portion 123 is matched with a second limiting portion 63 of a fastening bolt 6, which will be described later, so that the second pipeline 12 cannot be withdrawn from the outer floating sleeve 4 outwards.
The outer peripheral surface of the second pipeline 12 is provided with a third raised limiting part 124, the inner peripheral surface of the outer layer floating sleeve sealing part 42 is provided with a fourth raised limiting part 46, and the third limiting part 124 is matched with the fourth limiting part 46 to limit the second pipeline 12 to move relative to the outer layer floating sleeve 4 along the axis of the second pipeline 12 and limit the depth of the second pipeline 12 inserted into the outer layer floating sleeve 4. The fourth stopper portion 46 may protrude from the seal engagement portion 45.
Alternatively, the third stopper portion 124 and the third seal ring mounting portion 122 may be the same structure, for example, the third seal ring mounting portion 122 may be a plurality of protrusions, the grooves formed by the plurality of protrusions are used for mounting the seal ring, and one of the protrusions may be used as the third stopper portion 124.
As shown in fig. 4 and 8, the fastening bolt 6 includes a head portion 61 and a shaft portion 62, the fastening bolt 6 is provided with a central hole, the central hole is a through hole, and the fastening bolt 6 is sleeved on the second pipeline 12.
The outer peripheral surface of the head 61 may be prismatic, the stem 62 may be cylindrical, and the outer peripheral surface of the stem 62 is provided with a screw thread so that the fastening bolt 6 is screwed to the outer layer floating sleeve seal portion 42.
The inner peripheral surface of the fastening bolt 6 is provided with a second protruding limiting portion 63, and the first limiting portion 123 and the second limiting portion 63 cooperate to limit the second pipeline 12 from moving relative to the outer floating sleeve 4 along the axis thereof, so as to limit the second pipeline 12, prevent the second pipeline 12 from moving to the radial outer side (upper side in fig. 4) of the casing, and prevent the second pipeline 12 from withdrawing from the outer floating sleeve 4. The second pipeline 12 and the outer floating sleeve 4 can be connected through the cooperation of the first limiting part 123 and the second limiting part 63 and the cooperation of the third limiting part 124 and the fourth limiting part 46, and the second pipeline 12 and the outer floating sleeve 4 cannot move relatively in the axial direction.
It can be understood that the operating environment of the aircraft engine is relatively high in temperature, and the casing and the pipeline may deform to generate stress, and in the pipeline structure of the present application, which passes through the three-layer casing, when the casing deforms, the first pipeline 11 and the second pipeline 12 can move relatively along the axial direction of the pipeline 1 (radial direction of the casing), while the sealing performance of each duct is maintained. And these deformations are compensated by the intermediate layer floating sleeve 2 acting as intermediate layer casing 200 and the outer layer floating sleeve 4 now acting against the outer layer casing 300, resulting in less stress on the pipeline 1.
The installation process of the piping structure through the three-layer casing will be briefly described below.
First, the first pipe 11 and the inner casing 100 are fixedly connected, and after the middle casing 200 is mounted, the middle floating sleeve 2 is connected to the middle casing 200 using the middle flange cover 3. After the outer casing 300 is installed, the outer floating sleeve 4 is passed through the intermediate floating sleeve 2, and the outer floating sleeve 4 is attached to the outer casing 300 using the outer blind flange 5. The second pipeline 12 is inserted into the outer layer floating sleeve 4 and the first pipeline 11 is sleeved on the second pipeline 12, the fastening bolt 6 is screwed on the outer layer floating sleeve 4, and the fastening bolt 6 presses the second pipeline 12 to connect the second pipeline 12 and the outer layer floating sleeve 4.
The pipeline structure that passes three-layer cartridge receiver of this application dismouting is convenient, has reduced the dismouting degree of difficulty of cartridge receiver and pipeline, has improved the assembling ability of the pipeline that passes three-layer cartridge receiver to can satisfy the compensation deformation and the sealed requirement of cartridge receiver, use safe and reliable.
While the present application has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that the present application is not limited to the embodiments described in the present specification. The present application can be modified and implemented as a modified embodiment without departing from the spirit and scope of the present application defined by the claims. Therefore, the description in this specification is for illustrative purposes and does not have any limiting meaning for the present application.
Claims (11)
1. A piping structure passing through a three-layer casing, the piping structure passing through the three-layer casing comprising:
a pipeline (1);
an inner casing (100);
the middle layer casing (200), the middle layer casing (200) is sleeved on the radial outer side of the inner layer casing (100); and
the outer-layer casing (300) is sleeved on the radial outer side of the middle-layer casing (200); it is characterized in that the preparation method is characterized in that,
the pipeline structure penetrating through the three-layer casing further comprises:
a middle layer floating sleeve (2), wherein the middle layer floating sleeve (2) is connected to the middle layer casing (200), and the pipeline (1) penetrates through the middle layer floating sleeve (2); and
the outer floating sleeve (4), the outer floating sleeve (4) is connected to the outer casing (300), the middle floating sleeve (2) is sleeved on the outer floating sleeve (4), the middle floating sleeve (2) and the outer floating sleeve (4) can move relatively along the axial direction of the pipeline (1),
pipeline (1) includes first pipeline (11) and second pipeline (12), the one end of first pipeline (11) connect in inlayer machine casket (100), the other pot head of first pipeline (11) is located second pipeline (12), second pipeline (12) connect in outer floating sleeve (4), first pipeline (11) with second pipeline (12) can be followed the axial relative motion of pipeline (1).
2. The piping structure through a three-layer casing according to claim 1, further comprising an intermediate-layer flange cover (3), the intermediate-layer flange cover (3) being connected to the intermediate-layer casing (200), the intermediate-layer flange cover (3) being provided with an intermediate-layer flange cover groove (31), the intermediate-layer floating sleeve (2) comprising an intermediate-layer floating-sleeve mounting portion (21) and an intermediate-layer floating-sleeve sealing portion (22),
intermediate level floating sleeve installation portion (21) hold in intermediate level flange cover recess (31), the external diameter of intermediate level flange cover recess (31) is greater than the external diameter of intermediate level floating sleeve installation portion (21), makes intermediate level floating sleeve installation portion (21) can be followed the radial movably connected in of pipeline (1) in intermediate level receiver (200).
3. The piping structure through a three-layer casing according to claim 2, further comprising an outer-layer flange cover (5), wherein the outer-layer flange cover (5) is connected to the outer-layer casing (300), wherein the outer-layer flange cover (5) is provided with an outer-layer flange cover groove (51), wherein the outer-layer floating sleeve (4) comprises an outer-layer floating sleeve mounting portion (41) and an outer-layer floating sleeve sealing portion (42),
outer unsteady sleeve installation portion (41) hold in outer flange apron recess (51), the external diameter of outer flange apron recess (51) is greater than the external diameter of outer unsteady sleeve installation portion (41), makes outer unsteady sleeve installation portion (41) can be followed the radial activity of pipeline (1) connect in outer quick-witted casket (300).
4. The piping structure passing through the three-layer casing according to claim 3, wherein the outer peripheral surface of the first piping (11) is provided with a serration part (112), the inner peripheral surface of the outer floating sleeve sealing part (42) is provided with a serration fitting part (44), and the serration part (112) is fitted with the serration fitting part (44) to coaxially connect the first piping (11) and the outer floating sleeve (4).
5. Piping structure through a three-layer casing according to claim 3, characterized in that a first sealing ring (431) is arranged between the intermediate floating sleeve (2) and the outer floating sleeve (4).
6. Piping structure through a three-layer casing according to claim 1, characterized in that a second sealing ring (1211) is arranged between said first pipe (11) and said second pipe (12).
7. A pipe structure through a three-layer casing according to claim 3, characterized in that a third sealing ring (1221) is arranged between the second pipe (12) and the outer floating sleeve seal (42).
8. The piping structure passing through the three-layer casing according to claim 7, wherein the outer-layer floating sleeve sealing portion (42) is provided with a seal engaging portion (45), the seal engaging portion (45) is protruded from an inner peripheral surface of the outer-layer floating sleeve sealing portion (42), and the seal engaging portion (45) is engaged with the third seal ring (1221).
9. The piping structure passing through the three-layer casing according to claim 3, wherein the piping structure passing through the three-layer casing further comprises a fastening bolt (6), the fastening bolt (6) is provided with a central hole, the fastening bolt (6) is sleeved on the second pipe (12), and the fastening bolt (6) is screwed on the outer-layer floating sleeve sealing portion (42) so as to fixedly connect the second pipe (12) and the outer-layer floating sleeve (4).
10. The pipe structure passing through the three-layer casing according to claim 9, wherein the outer peripheral surface of the second pipe (12) is provided with a first convex limiting portion (123), the inner peripheral surface of the fastening bolt (6) is provided with a second convex limiting portion (63), the first limiting portion (123) and the second limiting portion (63) cooperate to limit the second pipe (12) from moving radially outward of the casing along the axis thereof with respect to the outer-layer floating sleeve (4),
the outer peripheral surface of the second pipeline (12) is provided with a third raised limiting part (124), the inner peripheral surface of the outer-layer floating sleeve sealing part (42) is provided with a fourth raised limiting part (46), and the third limiting part (124) is matched with the fourth limiting part (46) to limit the second pipeline (12) from moving towards the radial inner side of the casing relative to the outer-layer floating sleeve (4) along the axis of the second pipeline.
11. The pipeline structure penetrating through the three-layer casing according to claim 3, wherein the outer-layer floating sleeve mounting part (41) is provided with a tooling hole, the outer-layer flange cover plate (5) and the outer-layer casing (300) are provided with holes matched with the tooling hole, and the relative positions of the outer-layer floating sleeve (4) and the outer-layer casing (300) can be fixed through tooling bolts or tooling pins.
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| CN118088792A (en) * | 2024-04-22 | 2024-05-28 | 成都中科翼能科技有限公司 | Bleed air assembly of double-layer runner casing of gas turbine |
| CN118088792B (en) * | 2024-04-22 | 2024-07-02 | 成都中科翼能科技有限公司 | Bleed air assembly of double-layer runner casing of gas turbine |
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| Publication number | Publication date |
|---|---|
| CN113958378B (en) | 2022-06-14 |
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