CN204227469U - Hermetically-sealed construction after changeover portion - Google Patents
Hermetically-sealed construction after changeover portion Download PDFInfo
- Publication number
- CN204227469U CN204227469U CN201420631051.XU CN201420631051U CN204227469U CN 204227469 U CN204227469 U CN 204227469U CN 201420631051 U CN201420631051 U CN 201420631051U CN 204227469 U CN204227469 U CN 204227469U
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- CN
- China
- Prior art keywords
- changeover portion
- seal sheet
- hermetically
- sealed construction
- locating slot
- Prior art date
- 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.)
- Withdrawn - After Issue
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- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model relates to gas turbine technology field, specifically disclose hermetically-sealed construction after a kind of changeover portion, comprise the locating slot after being located at changeover portion on mounting edge, be located at the axial seal groove on turbine one-level stator blade and be inserted in described locating slot and axial seal groove and one end and pass described locating slot and primary seal sheet after being fixed on changeover portion on mounting edge, described primary seal sheet comprises middle part diaphragm seal, side seal sheet and brace, side seal sheet is located at the both sides of described middle part diaphragm seal, and described brace is located between described middle part diaphragm seal and side seal sheet.After changeover portion of the present utility model, hermetically-sealed construction owing to can carry out after installing changeover portion, the possibility occurring damaging can be eliminated in installation process, due to primary seal sheet can be pulled down when not tearing changeover portion open, under changeover portion life-span sufficiently long prerequisite, can accomplish do not dismantle changeover portion and only change primary seal sheet, shorten the repair time, the slip of primary seal sheet in running can also be avoided simultaneously.
Description
Technical field
The utility model relates to gas turbine technology field, particularly relates to hermetically-sealed construction after a kind of gas-turbine combustion chamber changeover portion.
Background technology
Typical gas turbine has compressor, combustion chamber, turbine and auxiliary system composition, multiple combustion chamber is centered around peritrochanteric ringwise, compressor compressed air, enter in combustion chamber and burn with fuel mix, then combustion gas enters turbine acting, and drive compressor compressed air, changeover portion accepts combustion chamber flame drum and turbine, the high-temperature fuel gas that burner inner liner produces is inducted into turbine, the combustion gas passed through is temperatures as high 1400K ~ 1800 K after burner inner liner blending cooling, its import cross sectional shape is consistent with burner inner liner, on outlet, some combustion chambers are connected, form described turbine one-level stator blade annular entrance, single changeover portion outlet is then in fan-shaped.
Owing to there is larger pressure differential inside and outside changeover portion, need to export the position that is connected with turbine with diaphragm seal at changeover portion, to prevent pressure-air from directly entering turbine, build-up of pressure loses.Common rear sealing is arranged on the rear mounting edge of changeover portion, after the accident such as easily to collide with in installation process causes, the damage of diaphragm seal, and if need replacing diaphragm seal, must pull down changeover portion, this increase the amount the time that inspection and repair shop needs, cause maintenance work efficiency lower.In addition, can there is certain movement in gas turbine operation process in traditional diaphragm seal, and severe patient even can come off, and causes very large hidden danger to the safety of gas turbine.
Utility model content
(1) technical problem that will solve
The purpose of this utility model is to provide hermetically-sealed construction after a kind of changeover portion, low to overcome rear hermetically-sealed construction dimension maintenance efficiency of the prior art, and the problem such as to be easily moved in gas turbine operation process.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides hermetically-sealed construction after a kind of changeover portion, comprises the locating slot after being located at changeover portion on mounting edge, is located at the axial seal groove on turbine one-level stator blade and is inserted in described locating slot and axial seal groove and one end passing described locating slot and primary seal sheet after being fixed on changeover portion on mounting edge; Described primary seal sheet comprises middle part diaphragm seal, side seal sheet and brace, and side seal sheet is located at the both sides of described middle part diaphragm seal, and described brace is located between described middle part diaphragm seal and side seal sheet.
Preferably, described primary seal sheet passes the other parts of one end perpendicular to described primary seal sheet of described locating slot.
Preferably, described middle part diaphragm seal is two, and described side seal sheet is two and is located at the both sides of two middle part diaphragm seals respectively, and described brace is three and is located at two middle part diaphragm seals and between middle part diaphragm seal and side seal sheet respectively.
Preferably, the brace be located between two middle part diaphragm seals is fixed therein on a middle part diaphragm seal, and the brace be located between middle part diaphragm seal and side seal sheet is fixed on side seal sheet.
Preferably, one end that described primary seal sheet passes described locating slot is fixed by mounting edge after bolt and changeover portion.
Preferably, described middle part diaphragm seal and side seal sheet are equipped with two bolts hole.
Preferably, described locating slot accounts for 30% ~ 50% of rear mounting edge circumferential thickness.
Preferably, the profile of profile and the mounting edge after changeover portion of described primary seal sheet and the junction of turbine one-level stator blade is corresponding.
Preferably, described locating slot is provided with two sections of installing ports, and each installing port is for installing a middle part diaphragm seal and a side seal sheet, and the length of described installing port is less than the half of the length of described locating slot.
Preferably, the vertical end face with described turbine one grade blade of described axial seal groove.
(3) beneficial effect
After changeover portion of the present utility model, hermetically-sealed construction has the following advantages:
(1) because hermetically-sealed construction after changeover portion of the present utility model can carry out after installing changeover portion, the possibility occurring damaging can be eliminated in installation process;
(2) because hermetically-sealed construction after changeover portion of the present utility model can pull down primary seal sheet when not tearing changeover portion open, under changeover portion life-span sufficiently long prerequisite, can accomplish do not dismantle changeover portion and only change primary seal sheet, shortening the repair time;
(3) the utility model is bolted hermetically-sealed construction after changeover portion, avoids the slip of diaphragm seal in running and even comes off.
Accompanying drawing explanation
Fig. 1 is the stereogram of hermetically-sealed construction after the changeover portion of the utility model embodiment;
Fig. 2 is the sectional view along A-A direction in Fig. 1;
Fig. 3 is the sectional view in centrally cross section in Fig. 1;
Fig. 4 is that the solid of the primary seal sheet of hermetically-sealed construction after the changeover portion of the utility model embodiment is shown;
Fig. 5 is the stereogram of the changeover portion in the utility model embodiment.
In figure, 1: changeover portion; 2: rear mounting edge; 3: turbine one-level stator blade; 4: axial seal groove; 5: bolt; 6: primary seal sheet; 7: locating slot; 8: installing port; 9: brace; 10: middle part diaphragm seal; 11: side seal sheet.
Detailed description of the invention
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples for illustration of the utility model, but can not be used for limiting scope of the present utility model.
As Figure 1-5, after the changeover portion of the present embodiment, hermetically-sealed construction comprises: be located at the locating slot 7 after changeover portion 1 on mounting edge 2, be located at the axial seal groove 4 on turbine one-level stator blade 3 and be inserted in locating slot 7 and axial seal groove 4 and one end place of wearing locating slot 7 primary seal sheet 6 after being fixed on changeover portion 1 on mounting edge 2, and the profile of the profile of primary seal sheet 6 and changeover portion 1 junction of mounting edge 2 and turbine one-level stator blade 3 is afterwards corresponding.
Primary seal sheet 6 comprises: middle part diaphragm seal 10, side seal sheet 11 and brace 9, middle part diaphragm seal 10 is two and two middle part diaphragm seals 10 are disposed adjacent at the middle part of primary seal sheet 6, side seal sheet 11 is two and is located at the both sides of two middle part diaphragm seals 10 respectively, brace 9 is three and is located at two middle part diaphragm seals 10 and between middle part diaphragm seal 10 and side seal sheet 11 respectively, thus avoid the pressure loss that adjacent middle part diaphragm seal 10 or the gap that exists between middle part diaphragm seal 10 and side seal sheet 11 are caused, play effective sealing function, wherein, the brace 9 be located between two middle part diaphragm seals 10 is fixed therein on a middle part diaphragm seal 10, the brace 9 be located between middle part diaphragm seal 10 and side seal sheet 11 is fixed on side seal sheet 11.
Primary seal sheet 6 passes the other parts of one end perpendicular to primary seal sheet 6 of locating slot 7, one end that primary seal sheet 6 passes locating slot 7 is fixed by the rear mounting edge 2 of bolt 5 and changeover portion 1, wherein, middle part diaphragm seal 10 and side seal sheet 11 are equipped with two bolts hole.
Locating slot 7 accounts for rear mounting edge 2 circumferential thickness 30% ~ 50%, can ensure that rear mounting edge has enough structural strengths like this, locating slot 7 is provided with two sections of installing ports 8, each installing port 8 is for installing a middle part diaphragm seal 10 and a side seal sheet 11, the length of installing port 8 is less than the half of the length of locating slot 7, like this, the length being equivalent to the two ends of primary seal sheet 6 is greater than the part that it is arranged in installing port 8, primary seal sheet 6 can be made to be stuck in the installing port 8 of locating slot 7, the end face of vertical and turbine one grade blade 3 of axial seal groove 4.
After the changeover portion of the present embodiment, the installation process of hermetically-sealed construction is: after changeover portion, hermetically-sealed construction is installed after changeover portion 1 completes installation, first middle part diaphragm seal 10 is inserted rear mounting edge 2 by installing port 8, and be positioned in the axial seal groove 4 of turbine one-level stator blade 3, then sidepiece diaphragm seal 11 is inserted, and brace 9 is ridden over above the diaphragm seal 10 of middle part, finally by bolt 5, middle part diaphragm seal 10 and side diaphragm seal 11 are installed on rear mounting edge 2.
After changeover portion of the present utility model, hermetically-sealed construction has the following advantages:
(1) because hermetically-sealed construction after changeover portion of the present utility model can carry out after installing changeover portion, the possibility occurring damaging can be eliminated in installation process;
(2) because hermetically-sealed construction after changeover portion of the present utility model can pull down primary seal sheet when not tearing changeover portion open, under changeover portion life-span sufficiently long prerequisite, can accomplish do not dismantle changeover portion and only change primary seal sheet, shortening the repair time;
(3) the utility model is bolted hermetically-sealed construction after changeover portion, and the slip avoiding primary seal sheet in running even comes off.
Embodiment of the present utility model provides for the purpose of example and description, and is not exhaustively or by the utility model be limited to disclosed form.Many modifications and variations are apparent for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present utility model and practical application are better described, and enables those of ordinary skill in the art understand the utility model thus design the various embodiments with various amendment being suitable for special-purpose.
Claims (10)
1. hermetically-sealed construction after a changeover portion, it is characterized in that, comprise the locating slot after being located at changeover portion on mounting edge, be located at the axial seal groove on turbine one-level stator blade and be inserted in described locating slot and axial seal groove and one end and pass described locating slot and primary seal sheet after being fixed on changeover portion on mounting edge; Described primary seal sheet comprises middle part diaphragm seal, side seal sheet and brace, and side seal sheet is located at the both sides of described middle part diaphragm seal, and described brace is located between described middle part diaphragm seal and side seal sheet.
2. hermetically-sealed construction after changeover portion according to claim 1, is characterized in that, described primary seal sheet passes the other parts of one end perpendicular to described primary seal sheet of described locating slot.
3. hermetically-sealed construction after changeover portion according to claim 2, it is characterized in that, described middle part diaphragm seal is two, described side seal sheet is two and is located at the both sides of two middle part diaphragm seals respectively, and described brace is three and is located at two middle part diaphragm seals and between middle part diaphragm seal and side seal sheet respectively.
4. hermetically-sealed construction after changeover portion according to claim 3, it is characterized in that, the brace be located between two middle part diaphragm seals is fixed therein on a middle part diaphragm seal, and the brace be located between middle part diaphragm seal and side seal sheet is fixed on side seal sheet.
5. hermetically-sealed construction after changeover portion according to claim 4, is characterized in that, one end that described primary seal sheet passes described locating slot is fixed by mounting edge after bolt and changeover portion.
6. hermetically-sealed construction after changeover portion according to claim 5, is characterized in that, described middle part diaphragm seal and side seal sheet are equipped with two bolts hole.
7. hermetically-sealed construction after changeover portion according to claim 1, is characterized in that, described locating slot accounts for 30% ~ 50% of rear mounting edge circumferential thickness.
8. according to hermetically-sealed construction after the changeover portion in claim 1-7 described in any one, it is characterized in that, the profile of the junction of the profile of described primary seal sheet and mounting edge after changeover portion and turbine one-level stator blade is corresponding.
9. hermetically-sealed construction after changeover portion according to claim 8, it is characterized in that, described locating slot is provided with two sections of installing ports, and each installing port is for installing a middle part diaphragm seal and a side seal sheet, and the length of described installing port is less than the half of the length of described locating slot.
10. hermetically-sealed construction after changeover portion according to claim 9, is characterized in that, the vertical end face with described turbine one grade blade of described axial seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420631051.XU CN204227469U (en) | 2014-10-28 | 2014-10-28 | Hermetically-sealed construction after changeover portion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420631051.XU CN204227469U (en) | 2014-10-28 | 2014-10-28 | Hermetically-sealed construction after changeover portion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204227469U true CN204227469U (en) | 2015-03-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420631051.XU Withdrawn - After Issue CN204227469U (en) | 2014-10-28 | 2014-10-28 | Hermetically-sealed construction after changeover portion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204227469U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373965A (en) * | 2014-10-28 | 2015-02-25 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Transition section rear sealing structure |
-
2014
- 2014-10-28 CN CN201420631051.XU patent/CN204227469U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373965A (en) * | 2014-10-28 | 2015-02-25 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Transition section rear sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150325 Effective date of abandoning: 20160803 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |