CN102678245A - Turbine rear expansion joint of engine - Google Patents
Turbine rear expansion joint of engine Download PDFInfo
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- CN102678245A CN102678245A CN2011100648311A CN201110064831A CN102678245A CN 102678245 A CN102678245 A CN 102678245A CN 2011100648311 A CN2011100648311 A CN 2011100648311A CN 201110064831 A CN201110064831 A CN 201110064831A CN 102678245 A CN102678245 A CN 102678245A
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- pipe
- expansion joint
- button
- inner ring
- telescopic pipe
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Abstract
The invention discloses a turbine rear expansion joint of an engine, which is characterized by including extension tubes, flanges arranged at two ends of the extension tubes, and connecting pieces arranged between the flanges and the extension tubes, wherein the extension tubes are double-buckle occlusion bellows, and the connecting pieces include inner rings and outer rings; the inner rings are metal tubes, one ends of the inner rings are vertically and fixedly connected with the flanges, and the other ends of the inner rings are connected onto the inner surfaces at the end parts of the extension tubes; the outer rings are metal tubes, and are sleeved on the outer surfaces at the end parts of the extension tubes and fixedly connected with the outer surfaces of the inner rings; and the end parts of the extension tubes are fastened and clamped between the inner rings and the outer rings. The turbine rear expansion joint not only has a large axial expansion amount, but also can bear a certain radial force, and can be radially bent for 10 degrees, and the reliability of the expansion joint is greatly improved.
Description
Technical field
The present invention relates to the engine mechanical technical field, relate to expansion joint behind a kind of engine turbine in particular.
Background technique
The main effect of expansion joint is to remedy the thermal expansion elongation of exhaust system part when motor moves behind the whirlpool of diesel engine, to strengthen the reliability of exhaust system part.The expansion joint of existing technology is that employing thickness is the double-layer stainless steel ring bellows of 0.3mm～1mm, and the welding wall thickness is connected by the exhaust system part of bolt with the front and back section through flange greater than the flange of 10mm at the ring bellows two ends.The exhaust system part of front and back section turns in the high operating mode process at engine starting process or by low operating mode, and delivery temperature raises, the exhaust system part expanded by heating elongation of front and back section, and expansion joint receives axle and upwards pressure, and circumferential wave is compressed, and expansion joint shortens; Motor by high operating mode to low operating mode change or stopping process in, along with the reduction of delivery temperature, the exhaust system part of front and back section shortens, expansion joint receives axle and upwards pressure and reduce, circumferential wave expands, the expansion joint elongation.The axial elongation amount of this bellows and decrement are quantity and the restrictions of pressing the ripple size (promptly will reach remedy the engine exhaust system part receive the required decrement of thermal stretching, need be no less than the bellows of 10 ripples) of pressurized ripple.And; This expansion joint can only elongate or shorten under the effect of axial force, can not bearing radial force, but in the actual using process of diesel engine; Because the vibration cause of assembling and engine body; Expansion joint can receive a certain amount of radial force, causes the weld iso-stress of bellows and flange to concentrate the place crackle or directly fracture to occur, and the feedback of a lot of this respect faults is arranged on the market.
Summary of the invention
The object of the present invention is to provide expansion joint behind a kind of engine turbine, not only the axial stretching amount is big, and can also bear certain radial force, and radially bending is 10 °, has improved the reliability of expansion joint greatly.
The present invention adopts following technological scheme to realize above-mentioned purpose: expansion joint behind a kind of engine turbine; Be made up of telescopic pipe, the flange that is located at the telescopic pipe two ends, the link that is located between flange and the telescopic pipe, this telescopic pipe is two button biting type bellowss, and this link includes inner ring and outer ring; This inner ring is a metal tube; This inner ring one end is connected with the flange vertical fixing, and the other end is connected the internal surface of telescopic pipe end, and this outer ring is a metal tube; This outer ring is socketed in the outer surface of telescopic pipe end and is fixedly connected with the inner ring outer surface, and this telescopic pipe end fastening clamp is between said inner ring, outer ring.
As further specifying of such scheme:
Preferably; Said two button biting type bellows is connected by the above unit pipe of two joints and constitutes; This unit pipe is a second order pipe; The end of the bigger side of this second order pipe diameter is provided with outer button, and the end of the less side of this second order pipe diameter is provided with interior button, and the outer button of this unit pipe fastens and forms with the interior button of adjacent cells pipe and slidably is connected.
Preferably; Said outer button is made up of in-flanges and interior sliding layer; This in-flanges is radially extended towards the axle center along it by the end of the bigger side of said unit pipe diameter and constitutes, and sliding layer is extended axially and towards the less side of this unit pipe diameter along said unit pipe by this in-flanges end and constitutes in this.
Preferably; Button is made up of flanging and outer spool layer in said; This flanging by the end of the less side of said unit pipe diameter along its radially dorsad the axle center extend and constitute, this outer spool layer is extended axially and towards the bigger side of this unit pipe diameter along said unit pipe by this flanging end and constitutes.
Preferably, said in-flanges and flanging width are not less than three times of said unit pipe pipe thickness.
Preferably, the width of sliding layer is not more than two times of distance between the step of sliding layer end and said unit pipe in this in said.
Preferably, the width of said outer spool layer is not more than two times of distance between the step of this outer spool layer end and said unit pipe.
Preferably, said flange middle part is provided with circular hole, and the diameter of this circular hole is not more than the external diameter of this inner ring, on this flange, also is provided with plural mounting hole.
Preferably; Said inner ring one end is vertically welded on the flange; The other end transition fit is plugged on the internal surface of telescopic pipe end; Said outer ring transition fit is socketed in the outer surface of telescopic pipe end, and the end in this outside, outer ring flushes with the end of telescopic pipe, and through welding end, outer ring, telescopic pipe end is welded on the inner ring outer surface.
The beneficial effect that the present invention adopts above technological scheme to reach is:
1. the present invention adopts the telescopic pipe of two button biting type bellowss as expansion joint; Not only the axial stretching amount is big for this pair button biting type bellows; And can also bear certain radial force, radially bending is nearly 10 °, has increased the expansion joint reliability during operation greatly.
2. the present invention is equipped with inner ring and the outer ring that is fixedly connected usefulness at the telescopic pipe two ends; This inner ring is connected the telescopic pipe internal surface; This outer ring is socketed in the telescopic pipe outer surface, through welding outer ring, telescopic pipe, inner ring is welded together again, and this Placement can be born bigger axial force and radial force; Firm and reliable connection has effectively reduced the probability that weld crackle occurs or directly ruptures.
Description of drawings
Fig. 1 is a partial schematic sectional view of the present invention;
Fig. 2 is the schematic representation of partial enlarged drawing A among Fig. 1;
Fig. 3 is an individual unit pipe vertical section structure schematic representation of the present invention;
Fig. 4 is that two unit pipe of the present invention connect schematic representation under elongation state;
Fig. 5 is a flange arrangement schematic representation of the present invention.
Description of reference numerals:
The 1-telescopic pipe, the 2-flange, the 3-inner ring, the 4-outer ring, sliding layer in the 5-in-flanges, 6-, the 7-flanging, the 8-outer spool layer, the 9-step, 10-detains outward, button in the 11-, 12-unit pipe.
Embodiment
For further setting forth 26S Proteasome Structure and Function of the present invention, below in conjunction with accompanying drawing and preferred embodiment the present invention is elaborated, but be to be understood that protection scope of the present invention does not receive the restriction of embodiment.
Fig. 1 is a half section schematic representation of the present invention; Shown in figure, the present invention is made up of telescopic pipe 1, the flange 2 that is located at telescopic pipe 1 two ends, the link that is located between flange 2 and the telescopic pipe 1, and this telescopic pipe 1 is two button biting type corrugated stainless steel tubings; This link includes inner ring 3 and outer ring 4; This inner ring 3 is a thickness 2.5mm Q235-A steel ring, and these inner ring 3 one ends are vertically welded on the flange 2, and the other end transition fit is plugged on telescopic pipe 1 internal surface; This outer ring 4 is that thickness is the 2mmQ235-A steel ring; These outer ring 4 transition fit are socketed in telescopic pipe 1 outer surface, and this outer ring 4 flushes with the end of telescopic pipe 1 near an end of telescopic pipe 1 end, and through welding 4 ends, outer ring, telescopic pipe 1 end are welded on inner ring 3 outer surfaces.
Fig. 2 is the schematic representation of partial enlarged drawing A among Fig. 1; Shown in figure; This pair button biting type corrugated stainless steel tubing is connected by the above unit pipe 12 of two joints and constitutes, and this unit pipe 12 is a second order pipe, and the end of the bigger side of this second order pipe diameter is provided with outer button 10; Button 11 in the end of the less side of this second order pipe diameter is provided with, the outer button 10 of this unit pipe 12 fasten and form with the interior button of adjacent cells pipe 11 and slidably be connected.
Fig. 3 is the vertical section structure schematic representation of individual unit pipe 12 of the present invention; Shown in figure; Each unit pipe 12 two ends is respectively equipped with outer button 10 and interior button 11; Should be made up of in-flanges 5 and interior sliding layer 6 by outer button 10, this in-flanges 5 is radially extended towards the axle center along it by the end of the bigger side of said unit pipe 12 diameters and constitutes, and sliding layer 6 is extended axially and towards the less side of these unit pipe 12 diameters along said unit pipe 12 by these in-flanges 5 ends and constitutes in this; Should constitute by flanging 7 and outer spool layer 8 by interior button 11; This flanging 7 by the end of the less side of said unit pipe 12 diameters along its radially dorsad the axle center extend and constitute, this outer spool layer 8 is extended axially and towards the bigger side of these unit pipe 12 diameters along said unit pipe 12 by these flanging 7 ends and constitutes.Wherein, In-flanges 5 and flanging 7 width are three times of unit pipe 12 pipe thicknesses; Therefore form the cavity of a pipe thickness between sliding layer 6 upper surface and the inner surface of tube wall, form the cavity of a pipe thickness between outer spool layer 8 lower surfaces and the outer surface of tube wall; In the width of sliding layer 6 equal two times of distance between the step 9 of sliding layer 6 end and said unit pipe 12 in this, the width of outer spool layer 8 equals two times of distance between the step 9 of these outer spool layer 8 ends and said unit pipe 12.
Fig. 4 is that two unit pipe of the present invention connect schematic representation under elongation state; Shown in figure; Cavity on unit pipe 12 on the outer button 10 of the outer spool layer 8 of button 11 and adjacent cells pipe cooperates, and formation can be connected along unit pipe 12 in axial sliding, and wherein A is two maximal dilation amounts between the unit pipe; In the present embodiment, A is 1mm.Like this, two extending amounts behind the unit pipe interlock snapping can be guaranteed, two sealabilities behind the unit pipe interlock snapping can be guaranteed again.
Fig. 5 is the structural representation of flange 2 of the present invention, and shown in figure, this flange 2 is a thickness 15mm Q235-A square steel plate; Be provided with circular hole at flange 2 middle parts; The somewhat larger in diameter of this circular hole is in the external diameter of link inner ring 3, so that welding is installed, also is provided with four mounting holes at this flange 2 four jiaos; This flange 2 is connected on the motor by screw through mounting hole.
The present invention need elongate assembling again when assembling; Turn in the high operating mode process at engine starting process or by low operating mode, delivery temperature raises, the exhaust system part expanded by heating of section elongation before and after the present invention; Therefore the present invention receives axial compressive force, and telescopic pipe 1 length is shortened; Motor by high operating mode to low operating mode change or stopping process in, along with the reduction of delivery temperature, the cooling of the exhaust system part of section is also shortened before and after the present invention, so the present invention receives axial upper pulling force, and telescopic pipe 1 length is elongated; When causing the present invention to receive radial force as if the vibration because of assembling and motor self, the present invention therefore can be crooked in 10 ° of scopes of axis, to guarantee the reliability when receiving radial force because adopt two biting type corrugated stainless steel tubings of detaining as telescopic pipe 1.
Be merely one of preferred embodiment of the present invention shown in the above embodiment of the present invention and the accompanying drawing, can not limit to the present invention with this, under the condition that does not break away from marrow of the present invention, any change that those skilled in the art did all belongs to protection scope of the present invention.
Claims (9)
1. expansion joint behind the engine turbine is characterized in that, is made up of telescopic pipe, the flange that is located at the telescopic pipe two ends, the link that is located between flange and the telescopic pipe; This telescopic pipe is two button biting type bellowss; This link includes inner ring and outer ring, and this inner ring is a metal tube, and this inner ring one end is connected with the flange vertical fixing; The other end is connected the internal surface of telescopic pipe end; This outer ring is a metal tube, and this outer ring is socketed in the outer surface of telescopic pipe end and is fixedly connected with the inner ring outer surface, and this telescopic pipe end fastening clamp is between said inner ring, outer ring.
2. expansion joint behind the engine turbine according to claim 1; It is characterized in that; Said two button biting type bellows is connected by the above unit pipe of two joints and constitutes, and this unit pipe is a second order pipe, and the end of the bigger side of this second order pipe diameter is provided with outer button; The end of the less side of this second order pipe diameter is provided with interior button, and the outer button of this unit pipe fastens and forms with the interior button of adjacent cells pipe and slidably is connected.
3. expansion joint behind the engine turbine according to claim 2; It is characterized in that; Said outer button is made up of in-flanges and interior sliding layer; This in-flanges is radially extended towards the axle center along it by the end of the bigger side of said unit pipe diameter and constitutes, and sliding layer is extended axially and towards the less side of this unit pipe diameter along said unit pipe by this in-flanges end and constitutes in this.
4. expansion joint behind the engine turbine according to claim 3; It is characterized in that; Button is made up of flanging and outer spool layer in said; This flanging by the end of the less side of said unit pipe diameter along its radially dorsad the axle center extend and constitute, this outer spool layer is extended axially and towards the bigger side of this unit pipe diameter along said unit pipe by this flanging end and constitutes.
5. expansion joint behind the engine turbine according to claim 4 is characterized in that, said in-flanges and flanging width are not less than three times of said unit pipe pipe thickness.
6. according to expansion joint behind claim 3, the 4 or 5 described engine turbines, it is characterized in that, said in the width of sliding layer be not more than two times of distance between the step of sliding layer end and said unit pipe in this.
7. according to expansion joint behind claim 4 or the 5 described engine turbines, it is characterized in that the width of said outer spool layer is not more than two times of distance between the step of this outer spool layer end and said unit pipe.
8. expansion joint behind the engine turbine according to claim 6 is characterized in that, said flange middle part is provided with circular hole, and the diameter of this circular hole is not more than the external diameter of this inner ring, on this flange, also is provided with plural mounting hole.
9. expansion joint behind the engine turbine according to claim 8; It is characterized in that; Said inner ring one end is vertically welded on the flange, and the other end transition fit is plugged on the internal surface of telescopic pipe end, and said outer ring transition fit is socketed in the outer surface of telescopic pipe end; The end in this outside, outer ring flushes with the end of telescopic pipe, and through welding end, outer ring, telescopic pipe end is welded on the inner ring outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100648311A CN102678245A (en) | 2011-03-14 | 2011-03-14 | Turbine rear expansion joint of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100648311A CN102678245A (en) | 2011-03-14 | 2011-03-14 | Turbine rear expansion joint of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102678245A true CN102678245A (en) | 2012-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100648311A Pending CN102678245A (en) | 2011-03-14 | 2011-03-14 | Turbine rear expansion joint of engine |
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| Country | Link |
|---|---|
| CN (1) | CN102678245A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116118996A (en) * | 2023-04-03 | 2023-05-16 | 北京凌空天行科技有限责任公司 | Retractable cabin aircraft |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1476704A (en) * | 1921-04-13 | 1923-12-11 | Titeflex Metal Hose Corp | Engine exhaust means |
| CN1084945A (en) * | 1992-09-10 | 1994-04-06 | 埃尔夫阿托化学有限公司 | The flexible metal pipe that polyvinylidene fluoride coats with better sheathed |
| CN2243015Y (en) * | 1996-03-15 | 1996-12-18 | 许建新 | Sealed telescopic metal flexible tube |
| CN201401573Y (en) * | 2009-02-20 | 2010-02-10 | 王俊忠 | Metallic flexible hose |
| CN202012389U (en) * | 2011-03-14 | 2011-10-19 | 广西玉柴机器股份有限公司 | Expansion joint after turbine of engine |
-
2011
- 2011-03-14 CN CN2011100648311A patent/CN102678245A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1476704A (en) * | 1921-04-13 | 1923-12-11 | Titeflex Metal Hose Corp | Engine exhaust means |
| CN1084945A (en) * | 1992-09-10 | 1994-04-06 | 埃尔夫阿托化学有限公司 | The flexible metal pipe that polyvinylidene fluoride coats with better sheathed |
| CN2243015Y (en) * | 1996-03-15 | 1996-12-18 | 许建新 | Sealed telescopic metal flexible tube |
| CN201401573Y (en) * | 2009-02-20 | 2010-02-10 | 王俊忠 | Metallic flexible hose |
| CN202012389U (en) * | 2011-03-14 | 2011-10-19 | 广西玉柴机器股份有限公司 | Expansion joint after turbine of engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116118996A (en) * | 2023-04-03 | 2023-05-16 | 北京凌空天行科技有限责任公司 | Retractable cabin aircraft |
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Application publication date: 20120919 |