CN205330739U - End vapor seal can swiftly be dismantled to high back pressure steam turbine - Google Patents
End vapor seal can swiftly be dismantled to high back pressure steam turbine Download PDFInfo
- Publication number
- CN205330739U CN205330739U CN201620115566.3U CN201620115566U CN205330739U CN 205330739 U CN205330739 U CN 205330739U CN 201620115566 U CN201620115566 U CN 201620115566U CN 205330739 U CN205330739 U CN 205330739U
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- CN
- China
- Prior art keywords
- seal ring
- stop pin
- labyrinth casing
- steam
- gland casing
- 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- Withdrawn - After Issue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)
- Sealing Devices (AREA)
Abstract
The utility model provides an end vapor seal can swiftly be dismantled to high back pressure steam turbine, it can the driving source trade to relate to, gland casing A and cylinder are equipped with adjusting shim A between second, gland casing A and cylinder are equipped with adjusting shim A between first, first is connected the cylinder through hexagon socket head cap screw with the bearing seal lid, be equipped with adjusting shim B between bearing seal lid and the gland casing B, gland casing B is connected with stop pin A one end in the left side, the stop pin A other end contacts with gland casing A, gland casing B right side is connected with stop pin B one end, the stop pin B other end contacts with gland casing C, when the end vapor seal is changed to the unit, on the bearing seal of can detacing earlier lid and the cylinder, the bolt of lower semijoint, fasteners such as round pin, then dismantle the bearing seal lid, dismantle again and divide a face bolt in the gland casing, the gland casing comprises two halves, can take out from upper portion respectively after dismantling the bearing seal lid, hold the change of vapor seal circle. Change the back, according to opposite order return the dress can, can change the end vapor seal not revealing under first the condition of cylinder, simple and efficient.
Description
Technical field
This utility model relates to energy power industry, is specifically related to a kind of high back pressure steam turbine and can fast dismantle end packing。
Background technology
High back pressure steam turbine refers to that initial steam pressure is between 8MPa ~ 12MPa, and exhaust steam pressure is at the back pressure turbine of 4MPa ~ 7MPa。The steam (standard configuration parameter of boiler) of high parameter is become middle parameter steam by high back pressure steam turbine, meeting on the basis of process equipment vapour demand, drive the equipment such as various pump, blower fan, compressor and electromotor, substitute temperature-decreased pressure reducer simultaneously, improve energy utilization rate。
Steam turbine may cause rotor and packing to touch mill because of reasons such as start and stop, abnormal vibrations or misoperations in running, causes the gap between packing and rotor to increase。The end packing pressure reduction of general steam turbine is less, and the increase in gap will not substantially increase steam loss, changes end packing with steam turbine when can repair。And the steam discharge parameter of high back pressure steam turbine is between 4～7MPa, exhaust steam pressure is higher, and end packing quantity is subject to the restriction of the factors such as structure, the forward and backward pressure reduction making the end each steam seal ring of packing is bigger, now, owing to the increase in gap significantly increases steam loss, and then end gland leak-off is caused。For thoroughly solving end gland leak-off problem, it is necessary to changing steam seal ring, and when general steam turbine changes steam seal ring, be required for opening cylinder upper half, workload is very big, provides a kind of new technical scheme to solve above-mentioned technical problem spy。
Summary of the invention
The purpose of this utility model is to reduce workload during high back pressure steam turbine replacing end packing, it is achieved simple and efficient, a kind of high back pressure steam turbine of special proposition can fast dismantle end packing。
The technical solution adopted in the utility model is: a kind of high back pressure steam turbine can fast dismantle end packing, adjustment pad A it is provided with between labyrinth casing A and cylinder lower half, adjustment pad A it is provided with between labyrinth casing A and cylinder upper half, cylinder upper half is connected by hexagon socket head cap screw with shaft seal cover, adjustment pad B it is provided with between shaft seal cover and labyrinth casing B, it is connected with stop pin A one end on the left of labyrinth casing B, the stop pin A other end contacts with labyrinth casing A, being connected with stop pin B one end on the right side of labyrinth casing B, the stop pin B other end contacts with labyrinth casing C。
Labyrinth casing A inwall is connected with steam seal ring A outer ring and is provided with spring between the two, steam seal ring A inner ring contacts with rotor, steam seal ring B it is provided with on the right side of steam seal ring A, steam seal ring B outer ring is connected with labyrinth casing A and is provided with spring between the two, steam seal ring B inner ring contacts with rotor, the outer ring of described labyrinth casing C and steam seal ring C is connected and is provided with between the two spring, and steam seal ring C inner ring contacts with rotor。
The quantity of described steam seal ring A is three, and the quantity of steam seal ring B is four, and the quantity of steam seal ring C is one。
The beneficial effects of the utility model are: when unit changes end packing, can first dismantle the securing members such as shaft seal cover and the bolt of the upper and lower half-connection of cylinder, pin, then shaft seal cover is dismantled, dismantle labyrinth casing split bolt again, labyrinth casing is made up of two halves, can take out from top respectively after dismounting shaft seal cover, carry out the replacing of end steam seal ring。After replacing, return in reverse order and fill, it is possible to when not opening cylinder upper half, change end packing, simple and efficient。
Accompanying drawing illustrates:
Fig. 1 is this utility model structural representation。
Detailed description of the invention:
With reference to Fig. 1, a kind of high back pressure steam turbine can fast dismantle end packing, adjustment pad A3 it is provided with between labyrinth casing A2 and cylinder lower half 15, adjustment pad A3 it is provided with between labyrinth casing A2 and cylinder upper half 4, cylinder upper half 4 is connected by hexagon socket head cap screw 8 with shaft seal cover 7, adjustment pad B9 it is provided with between shaft seal cover 7 and labyrinth casing B10, it is connected with stop pin A6 one end on the left of labyrinth casing B10, the stop pin A6 other end contacts with labyrinth casing A2, being connected with stop pin B11 one end on the right side of labyrinth casing B10, the stop pin B11 other end contacts with labyrinth casing C12。
Labyrinth casing A2 inwall is connected with steam seal ring A1 outer ring and is provided with spring between the two, steam seal ring A1 inner ring contacts with rotor 14, steam seal ring B5 it is provided with on the right side of steam seal ring A1, steam seal ring B5 outer ring is connected with labyrinth casing A2 and is provided with spring between the two, steam seal ring B5 inner ring contacts with rotor 14, the outer ring of described labyrinth casing C12 and steam seal ring C13 is connected and is provided with between the two spring, and steam seal ring C14 inner ring contacts with rotor 14。
The quantity of described steam seal ring A1 is three, and the quantity of steam seal ring B5 is four, and the quantity of steam seal ring C13 is one。
Shaft seal cover 7 is provided with vertical flange face and horizontal flange, is bolted to cylinder upper half 4 and cylinder lower half 15 respectively through hexagon socket head cap screw 8 and split, axially and transversely uses finger setting。Each labyrinth casing adopts split Flange joint, is axially located through adjustment pad A3 and adjustment pad B9 and adjusts, and located lateral is positioned by split pin, and circumference anti-rotation adopts stop pin A6 and stop pin B11 to realize。When unit needs to change steam seal ring, can directly dismantle shaft seal cover 7, then dismounting labyrinth casing B10 and labyrinth casing C12, then be replaced steam seal ring, when not opening cylinder upper half, change end packing, simple and efficient。
Claims (3)
1. a high back pressure steam turbine can fast dismantle end packing, it is characterized in that: between labyrinth casing A and cylinder lower half, be provided with adjustment pad A, adjustment pad A it is provided with between labyrinth casing A and cylinder upper half, cylinder upper half is connected by hexagon socket head cap screw with shaft seal cover, adjustment pad B it is provided with between shaft seal cover and labyrinth casing B, it is connected with stop pin A one end on the left of labyrinth casing B, the stop pin A other end contacts with labyrinth casing A, being connected with stop pin B one end on the right side of labyrinth casing B, the stop pin B other end contacts with labyrinth casing C。
2. high back pressure steam turbine according to claim 1 can fast dismantle end packing, it is characterized in that: labyrinth casing A inwall is connected with steam seal ring A outer ring and is provided with spring between the two, steam seal ring A inner ring contacts with rotor, steam seal ring B it is provided with on the right side of steam seal ring A, steam seal ring B outer ring is connected with labyrinth casing A and is provided with spring between the two, steam seal ring B inner ring contacts with rotor, and the outer ring of described labyrinth casing C and steam seal ring C is connected and is provided with between the two spring, and steam seal ring C inner ring contacts with rotor。
3. high back pressure steam turbine according to claim 2 can fast dismantle end packing, it is characterised in that: the quantity of described steam seal ring A is three, and the quantity of steam seal ring B is four, and the quantity of steam seal ring C is one。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620115566.3U CN205330739U (en) | 2016-02-05 | 2016-02-05 | End vapor seal can swiftly be dismantled to high back pressure steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620115566.3U CN205330739U (en) | 2016-02-05 | 2016-02-05 | End vapor seal can swiftly be dismantled to high back pressure steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205330739U true CN205330739U (en) | 2016-06-22 |
Family
ID=56318158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620115566.3U Withdrawn - After Issue CN205330739U (en) | 2016-02-05 | 2016-02-05 | End vapor seal can swiftly be dismantled to high back pressure steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205330739U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545373A (en) * | 2016-02-05 | 2016-05-04 | 中国船舶重工集团公司第七�三研究所 | High-back-pressure turbine end vapor seal capable of being rapidly detached |
| CN109204761A (en) * | 2018-09-26 | 2019-01-15 | 中国船舶重工集团公司第七0三研究所 | A kind of marine engine group modularization integrated stand with steam discharge function |
-
2016
- 2016-02-05 CN CN201620115566.3U patent/CN205330739U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545373A (en) * | 2016-02-05 | 2016-05-04 | 中国船舶重工集团公司第七�三研究所 | High-back-pressure turbine end vapor seal capable of being rapidly detached |
| CN105545373B (en) * | 2016-02-05 | 2017-05-10 | 中国船舶重工集团公司第七�三研究所 | High-back-pressure turbine end vapor seal capable of being rapidly detached |
| CN109204761A (en) * | 2018-09-26 | 2019-01-15 | 中国船舶重工集团公司第七0三研究所 | A kind of marine engine group modularization integrated stand with steam discharge function |
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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: 20160622 Effective date of abandoning: 20170510 |
|
| AV01 | Patent right actively abandoned |