CN212130560U - Steam seal structure is dismantled to low parameter saturated steam turbine - Google Patents
Steam seal structure is dismantled to low parameter saturated steam turbine Download PDFInfo
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- CN212130560U CN212130560U CN202020640499.3U CN202020640499U CN212130560U CN 212130560 U CN212130560 U CN 212130560U CN 202020640499 U CN202020640499 U CN 202020640499U CN 212130560 U CN212130560 U CN 212130560U
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Abstract
The utility model provides a low parameter saturated steam turbine dismantles vapor seal structure, the utility model aims at solving the complicated problem of low parameter saturated steam turbine change end vapor seal when unit overhauls and maintains, it includes cylinder first, axle closing cap, vapor seal casing first, vapor seal circle second, vapor seal casing second, cylinder second, a plurality of vapor seal casing stop tabs and a plurality of vapor seal circle stop tabs; half and the shaft seal lid and cylinder are half relative settings down on the cylinder, and the cylinder is half relative settings with the cylinder that corresponds down constitutes the ring form, and the shaft seal lid sets up the constitution ring form with the cylinder that corresponds is half relative, and the gland casing is half first to be set up on the shaft seal lid inside wall, and the gland casing is half setting up under the cylinder on half and the inside wall that the gland casing is half first to correspond, and the gland is half relative settings with the gland circle and constitutes ring shape gland seal up on the upper half, and the gland is half first to install on the gland casing, and the gland circle is half first to install on the gland casing is half down, the utility model is used for the steam turbine field.
Description
Technical Field
The utility model relates to a steam turbine that boats and ships trade was used dismantles vapor seal structure belongs to energy power trade.
Background
The steam turbine can make rotor and gland produce the bump and grind because of opening and shutting, reasons such as vibration in the use unavoidably, and long-time operation back gland clearance can consequently increase, and the clearance increase can increase the steam leakage volume, makes end gland leak hunting increase. However, the common low-parameter saturated steam turbine needs to uncover the cylinder to replace the end steam seal, and the complex workload of replacing the end steam seal of the low-parameter saturated steam turbine during the overhaul and maintenance of the unit is large.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem of the complicacy of changing the end vapor seal when unit overhauls and maintains low parameter saturated steam turbine, and then provide a vapor seal structure is dismantled to low parameter saturated steam turbine.
The utility model discloses a solve above-mentioned problem and the technical scheme who adopts is:
the steam sealing device comprises an upper half of a cylinder, a shaft sealing cover, an upper half of a steam sealing shell, an upper half of a steam sealing ring, a lower half of the steam sealing shell, a lower half of the cylinder, a plurality of steam sealing shell stop pieces and a plurality of steam sealing ring stop pieces; the upper half of the cylinder is a semi-circular ring body, the shaft sealing cover is a semi-circular ring body, the upper half of the steam sealing shell and the lower half of the steam sealing shell are both semi-circular ring bodies, the upper half of the steam sealing ring and the lower half of the steam sealing ring are both semi-circular steam sealing bodies, the lower half of the cylinder is a semi-circular ring body, the upper half of the cylinder and the shaft sealing cover are arranged opposite to the lower half of the cylinder, the upper half of the cylinder is fixedly connected with the shaft sealing cover, the upper half of the cylinder and the corresponding lower half of the cylinder are oppositely arranged to form a ring body, the shaft sealing cover and the corresponding lower half of the cylinder are oppositely arranged to form a ring body, the upper half of the steam sealing shell and the lower half of the steam sealing shell are oppositely arranged to form a ring steam sealing shell, the upper half of the steam sealing shell is arranged on the inner side wall of the shaft sealing cover, the lower half of the steam sealing shell is arranged on the inner side wall corresponding to the upper half of the steam sealing shell, the upper half of the steam, the upper half of the steam seal ring and the lower half of the steam seal ring are oppositely arranged to form a circular steam seal, the upper half of the steam seal ring is arranged on the upper half of the steam seal shell, the upper half of the steam seal ring stops on the upper half of the steam seal ring through a plurality of steam seal ring stop pieces, the lower half of the steam seal ring is arranged on the lower half of the steam seal shell, and the lower half of the steam seal ring stops on the lower half of the steam seal shell through a plurality of steam seal ring stop pieces.
The utility model has the advantages that:
1. a detachable shaft seal cover 3 structure is adopted at a steam seal position at the end of the steam turbine, and a steam seal upper half 6 and a steam seal shell upper half 4 are arranged on the shaft seal cover 3. When the end steam seal is replaced, the upper half 6 of the steam seal ring and the lower half 7 of the steam seal ring can be respectively taken out for replacement only by removing the shaft seal cover 3.
2. The utility model has the advantages that when the shaft sealing cover 3 is disassembled, the fastening piece of the fixing screw 2 of the shaft sealing cover can be disassembled firstly, and then the shaft sealing cover 3 is disassembled; and then, the gland body split bolt 16 is disassembled, the upper half 6 of the gland ring and the lower half 7 of the gland ring are replaced, and after the upper half 6 of the gland ring and the lower half 7 of the gland ring are replaced, the gland body split bolt 16 is installed, a shaft sealing cover is reinstalled, and fasteners such as bolts, pins and the like are installed. The structure greatly reduces the workload when the steam seal is replaced.
Drawings
Fig. 1 is a front sectional view of the present application.
Fig. 2 is a sectional view of the present application.
Fig. 3 is a schematic view of the shaft cover 3 provided with the center-split bolt 16.
Detailed Description
The first embodiment is as follows: the present embodiment is described with reference to fig. 1-2, and the low-parameter saturated steam turbine dismounting steam seal structure according to the present embodiment includes a cylinder upper half 1, a shaft seal cover 3, a steam seal housing upper half 4, a steam seal ring upper half 6, a steam seal ring lower half 7, a steam seal housing lower half 8, a cylinder lower half 9, a plurality of steam seal housing stop pieces 11, and a plurality of steam seal ring stop pieces 13; the upper half 1 of the cylinder is a semi-circular ring body, the shaft sealing cover 3 is a semi-circular ring body, the upper half 4 of the steam sealing shell and the lower half 8 of the steam sealing shell are both semi-circular ring bodies, the upper half 6 of the steam sealing ring and the lower half 7 of the steam sealing ring are both semi-circular ring bodies, the lower half 9 of the cylinder is a semi-circular ring body, the upper half 1 of the cylinder and the shaft sealing cover 3 are oppositely arranged with the lower half 9 of the cylinder, the upper half 1 of the cylinder is fixedly connected with the shaft sealing cover 3, the upper half 1 of the cylinder and the lower half 9 of the corresponding cylinder are oppositely arranged to form a ring body, the shaft sealing cover 3 and the lower half 9 of the corresponding cylinder are oppositely arranged to form a ring body, the upper half 4 of the steam sealing shell and the lower half 8 of the steam sealing shell are oppositely arranged to form a ring-shaped steam sealing shell, the upper half 4 of the steam sealing shell is arranged on the inner side wall of the shaft sealing cover 3, the lower half 8 of the steam sealing shell is arranged on the, the lower half 8 of the steam seal shell stops on the lower half 9 of the cylinder through a plurality of steam seal shell stop pieces 11, the upper half 6 of the steam seal ring and the lower half 7 of the steam seal ring are oppositely arranged to form a circular steam seal, the upper half 6 of the steam seal ring is arranged on the upper half 4 of the steam seal shell, the upper half 6 of the steam seal ring stops on the upper half 6 of the steam seal ring through a plurality of steam seal ring stop pieces 13, the lower half 7 of the steam seal ring is arranged on the lower half 8 of the steam seal shell, and the lower half 7 of the steam seal ring stops on the lower half 8 of the steam seal shell through a plurality of steam seal ring stop pieces 13.
The second embodiment is as follows: the present embodiment is described with reference to fig. 1 to fig. 2, and the present embodiment further includes a plurality of shaft seal cover fixing screws 2; the shaft cover 3 is mounted on the cylinder upper half 1 by a plurality of shaft cover fixing screws 2. The rest is the same as the first embodiment.
The third concrete implementation mode: the embodiment is described with reference to fig. 1-2, and the low parameter saturated steam turbine dismounting steam seal structure of the embodiment further comprises a plurality of spring pieces 5; a plurality of spring pieces 5 are arranged between the upper half 4 of the steam seal shell and the upper half 6 of the steam seal ring, and a plurality of spring pieces 5 are arranged between the lower half 7 of the steam seal ring and the lower half 8 of the steam seal shell. The spring 5 is elastically pressed, as in the first embodiment.
The fourth concrete implementation mode: the present embodiment is described with reference to fig. 1 to 2, and the present embodiment describes a low parameter saturated steam turbine seal dismounting structure, which further includes a plurality of seal housing fixing screws 10, and a seal housing stop plate 11 on the shaft seal cover 3 is mounted on the shaft seal cover 3 through the seal housing fixing screws 10, and the rest is the same as the first embodiment.
The fifth concrete implementation mode: the present embodiment is described with reference to fig. 1 to fig. 2, the low parameter saturated steam turbine dismounting gland seal structure according to the present embodiment further includes a gland seal ring stop screw 12, the upper gland seal ring stop piece 13 of the upper half 6 of the gland seal ring is disposed on the upper half 6 of the gland seal ring through the gland seal ring stop screw 12, the upper half 6 of the gland seal ring is fixed with the upper half 4 of the gland seal casing through the gland seal ring stop screw 12 and the gland seal ring stop piece 13, and the rest is the same as the first embodiment.
The sixth specific implementation mode: the embodiment is described with reference to fig. 1 to fig. 2, and the low-parameter saturated steam turbine dismounting steam seal structure of the embodiment further includes a plurality of anti-rotation pins 14, the outer side wall of the lower half 7 of the steam seal ring is arranged on the lower half 8 of the steam seal housing through the plurality of anti-rotation pins 14, and the lower half 7 of the steam seal ring is positioned and prevented from rotating through the plurality of anti-rotation pins 14, which is the same as the first embodiment.
The seventh embodiment: the present embodiment is described with reference to fig. 1-2, and the present embodiment describes a low parameter saturated steam turbine seal removing structure, which further includes a plurality of pins 15, the pins 15 are inserted into the lower half 8 of the seal housing and the lower half 9 of the cylinder, and the lower half 8 of the seal housing is positioned on the lower half 9 of the cylinder by the plurality of pins 15. The rest is the same as the first embodiment.
The specific implementation mode is eight: the present embodiment is described with reference to fig. 1 to fig. 3, and the low-parameter saturated steam turbine dismounting steam seal structure according to the present embodiment further includes a plurality of mid-facet bolts 16, and the mid-facet of the shaft seal cover 3 is fixedly connected with the lower cylinder half 9 through the plurality of mid-facet bolts 16. The rest is the same as the first embodiment.
Principle of operation
When the steam seal ring of the low-parameter saturated steam turbine needs to be replaced, the shaft seal cover 3 is detached, the upper half 4 of the steam seal shell and the upper half 6 of the steam seal ring are detached together with the shaft seal cover 3, the upper half 6 of the steam seal ring is replaced after the stop screw 12 and the stop piece 13 of the steam seal ring are detached, and the stop screw 12 and the stop piece 13 of the steam seal ring are installed during recovery. After the shaft sealing cover 3 is removed, the lower half 8 of the steam sealing shell and the lower half 7 of the steam sealing ring slide out together, and the lower half 7 of the steam sealing ring is replaced after the steam sealing shell slides out. After the steam seal ring is replaced, the lower half 8 of the steam seal shell and the lower half 7 of the steam seal ring are firstly cut into the lower half 9 of the cylinder, and the fixing screw 10 of the steam seal shell is installed. And ensuring that the upper half 4 of the steam seal shell and the upper half 6 of the steam seal ring are arranged on the shaft seal cover 3, and then, the shaft seal cover 3 is installed again to tighten the bolt.
Claims (8)
1. The utility model provides a steam seal structure is dismantled to low parameter saturated steam turbine which characterized in that: the steam sealing device comprises an upper half (1) of a steam cylinder, a shaft sealing cover (3), an upper half (4) of a steam sealing shell, a upper half (6) of the steam sealing ring, a lower half (7) of the steam sealing ring, a lower half (8) of the steam sealing shell, a lower half (9) of the steam cylinder, a plurality of steam sealing shell stop pieces (11) and a plurality of steam sealing ring stop pieces (13); the upper half (1) of the cylinder is a semicircular ring body, the shaft sealing cover (3) is a semicircular ring body, the upper half (4) of the steam sealing shell and the lower half (8) of the steam sealing shell are both semicircular ring bodies, the upper half (6) of the steam sealing ring and the lower half (7) of the steam sealing ring are both semicircular ring bodies, the lower half (9) of the cylinder is a semicircular ring body, the upper half (1) of the cylinder and the shaft sealing cover (3) are arranged opposite to the lower half (9) of the cylinder, the upper half (1) of the cylinder is fixedly connected with the shaft sealing cover (3), the upper half (1) of the cylinder and the corresponding lower half (9) of the cylinder are oppositely arranged to form a ring body, the upper half (4) of the steam sealing shell and the lower half (8) of the steam sealing shell are oppositely arranged to form a ring body, the upper half (4) of the steam sealing shell is arranged on the inner side wall of the shaft sealing cover (3), and the lower half (8) of the steam sealing shell is arranged on the inner side wall of the lower half (9) of the cylinder and the upper half (4) of the steam, the upper half (4) of the steam seal shell stops on the shaft seal cover (3) through a plurality of steam seal shell stop pieces (11), the lower half (8) of the steam seal shell stops on the lower half (9) of the cylinder through a plurality of steam seal shell stop pieces (11), the upper half (6) of the steam seal ring and the lower half (7) of the steam seal ring are oppositely arranged to form a circular steam seal, the upper half (6) of the steam seal ring is installed on the upper half (4) of the steam seal shell, the upper half (6) of the steam seal ring stops on the upper half (6) of the steam seal ring through a plurality of steam seal ring stop pieces (13), the lower half (7) of the steam seal ring is installed on the lower half (8) of the steam seal shell, and the lower half (7) of the steam seal ring stops on the lower half (8) of the steam seal shell through a plurality of steam seal ring stop pieces (13).
2. The low parameter saturated steam turbine seal removal structure according to claim 1, wherein: it also comprises a plurality of shaft cover fixing screws (2); the shaft sealing cover (3) is arranged on the upper half (1) of the cylinder through a plurality of shaft sealing cover fixing screws (2).
3. The low parameter saturated steam turbine seal removal structure according to claim 1, wherein: it also comprises a plurality of spring leaves (5); a plurality of spring pieces (5) are arranged between the upper half (4) of the steam seal shell and the upper half (6) of the steam seal shell, and a plurality of spring pieces (5) are arranged between the lower half (7) of the steam seal ring and the lower half (8) of the steam seal shell.
4. The low parameter saturated steam turbine seal removal structure according to claim 1, wherein: the steam seal cover assembly further comprises a plurality of steam seal shell fixing screws (10), and steam seal shell stop plates (11) on the shaft seal cover (3) are mounted on the shaft seal cover (3) through the steam seal shell fixing screws (10).
5. The low parameter saturated steam turbine seal removal structure according to claim 1, wherein: the steam seal ring stop screw is characterized by further comprising a steam seal ring stop screw (12), and a steam seal ring stop piece (13) on the upper half (6) of the steam seal ring is arranged on the upper half (6) of the steam seal ring through the steam seal ring stop screw (12).
6. The low parameter saturated steam turbine seal removal structure according to claim 1, wherein: the steam seal ring is characterized by further comprising a plurality of anti-rotation pins (14), the outer side wall of the upper half part (6) of the steam seal ring is arranged on the upper half part (4) of the steam seal shell through the plurality of anti-rotation pins (14), and the outer side wall of the lower half part (7) of the steam seal ring is arranged on the lower half part (8) of the steam seal shell through the plurality of anti-rotation pins (14).
7. The low parameter saturated steam turbine seal removal structure according to claim 1, wherein: the steam seal further comprises a plurality of pins (15), and the pins (15) are inserted on the lower half (8) of the steam seal shell and the lower half (9) of the cylinder.
8. The low parameter saturated steam turbine seal removal structure according to claim 1, wherein: the split type air cylinder is characterized by further comprising a plurality of split surface bolts (16), and the split surface of the shaft sealing cover (3) is fixedly connected with the lower half (9) of the air cylinder through the plurality of split surface bolts (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020640499.3U CN212130560U (en) | 2020-04-25 | 2020-04-25 | Steam seal structure is dismantled to low parameter saturated steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020640499.3U CN212130560U (en) | 2020-04-25 | 2020-04-25 | Steam seal structure is dismantled to low parameter saturated steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212130560U true CN212130560U (en) | 2020-12-11 |
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ID=73690715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020640499.3U Active CN212130560U (en) | 2020-04-25 | 2020-04-25 | Steam seal structure is dismantled to low parameter saturated steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212130560U (en) |
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2020
- 2020-04-25 CN CN202020640499.3U patent/CN212130560U/en active Active
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