CN214063077U - Push-pull device of steam turbine - Google Patents
Push-pull device of steam turbine Download PDFInfo
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- CN214063077U CN214063077U CN202023038081.4U CN202023038081U CN214063077U CN 214063077 U CN214063077 U CN 214063077U CN 202023038081 U CN202023038081 U CN 202023038081U CN 214063077 U CN214063077 U CN 214063077U
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- pull device
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- 238000010276 construction Methods 0.000 abstract description 2
- 238000010977 unit operation Methods 0.000 abstract description 2
- 238000005452 bending Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model provides a steam turbine push-and-pull device, the utility model relates to a push-and-pull device, the utility model discloses a solve the too big unstable problem of unit operation that leads to of current steam turbine centering beam structure rigidity, and then provide a steam turbine push-and-pull device. The invention comprises a steam turbine outer cylinder, a bearing box, a keyway plate and a plurality of I-shaped keys, wherein the keyway plate is positioned between the steam turbine outer cylinder and the bearing box, the keyway plate is fixedly connected with the steam turbine outer cylinder, and the keyway plate is connected with the bearing box through the plurality of I-shaped keys. The utility model discloses satisfying under the prerequisite of its intensity and security, the biggest unit length that shortens reduces steam turbine area, practices thrift the shafting space, effectively reduces the construction cost of power plant.
Description
Technical Field
The utility model relates to a push-and-pull device, concretely relates to steam turbine push-and-pull device, the invention relates to steam turbine technical field.
Background
A push-pull device connected between an outer cylinder and a bearing box in a steam turbine unit is a necessary component of the steam turbine unit. The original structure is generally fixed between a bearing box and an outer cylinder by bolts to form a centering beam structure, the centering beam is in a push-pull structure, the centering beam is fixedly connected to the outer walls of a cylinder and the bearing box through bolts, the temperature of the cylinder is high during operation, the temperature of the bearing box is low, and the centering beam expands downwards along with the cylinder. The downward expansion amount of the cylinder at the position of the centering beam is larger than that of the bearing box side, and the centering beam generates bending deformation, so that the stability of the cylinder is influenced. Under the great trend of saving energy, reducing emission and shortening the axial installation space, the axial length is shortened, the rigidity is increased, the stability of the cylinder is extremely adversely affected, and dynamic and static rubbing, vibration fluctuation and the like of the cylinder can be caused.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the too big unstable problem of unit operation that leads to of current steam turbine centering beam structure rigidity, and then provide a steam turbine push-and-pull device.
The utility model discloses a solve the technical scheme that above-mentioned problem was taken and be:
the invention comprises a steam turbine outer cylinder, a bearing box, a keyway plate and a plurality of I-shaped keys, wherein the keyway plate is positioned between the steam turbine outer cylinder and the bearing box, the keyway plate is fixedly connected with the steam turbine outer cylinder, and the keyway plate is connected with the bearing box through the plurality of I-shaped keys.
Furthermore, each I-shaped key comprises two T-shaped blocks and a rectangular block, the two T-shaped blocks are oppositely arranged at two ends of the rectangular block, and two ends of the rectangular block are respectively connected with the two T-shaped blocks into a whole.
Further, the number of the I-shaped keys is two, and the upper part and the lower part of the keyway plate and the bearing box are respectively connected together through one I-shaped key.
Furthermore, the keyway plate is a rectangular plate body, and a protruding part connected with the bearing box is arranged in the middle of the keyway plate.
Furthermore, first T-shaped grooves matched with the T-shaped blocks are respectively formed in two sides of the protruding portion.
Furthermore, the push-pull device of the steam turbine further comprises a positioning pin, two counter bores are respectively arranged on two sides of the protruding portion of the key groove plate, and one end of the positioning pin penetrates through the counter bores and then is connected with the outer cylinder of the steam turbine.
Furthermore, the middle part of the bearing box is provided with a groove matched with the boss, and two sides of the groove are respectively provided with a second T-shaped groove matched with the T-shaped block.
The utility model has the advantages that:
the utility model can shorten the length of the unit to the maximum extent, reduce the occupied area of the steam turbine, save the space of the shafting and effectively reduce the construction cost of the power plant on the premise of meeting the strength and the safety;
the I-shaped key can slide up and down in the key slot and cannot expand downwards along with the cylinder. The expansion difference between the outer cylinder of the steam turbine and the bearing box in the up-and-down direction can not cause the bending deformation of the I-shaped key, and the I-shaped key has no influence on the stability of the cylinder.
Drawings
Fig. 1 is a top view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of a keyway plate;
FIG. 3 is a side view of FIG. 2;
FIG. 4 is a cross-sectional view of a dowel counterbore in a keyway plate;
FIG. 5 is a front view of the workpiece form key;
FIG. 6 is a top view of the I-key of the piece;
fig. 7 is an enlarged view of a portion C of fig. 1.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1, and the push-pull device for the steam turbine according to the embodiment includes a steam turbine outer cylinder 1, a bearing box 2, a keyway plate 3 and a plurality of i-shaped keys 4, wherein the keyway plate 3 is located between the steam turbine outer cylinder 1 and the bearing box 2, the keyway plate 3 is fixedly connected with the steam turbine outer cylinder 1, and the keyway plate 3 is connected with the bearing box 2 through the plurality of i-shaped keys 4. The i-shaped key 4 can slide up and down in the keyway plate 3 and the keyway of the bearing housing 2. The keyway plate 3 is tightly connected with the steam turbine outer cylinder 1 through a connecting bolt 6.
The second embodiment is as follows: referring to fig. 1, the i-shaped key 4 of the present embodiment includes two T-shaped blocks 4-1 and a rectangular block 4-2, the two T-shaped blocks 4-1 are oppositely disposed at two ends of the rectangular block 4-2, and two ends of the rectangular block 4-2 are respectively connected with the two T-shaped blocks 4-1 into a whole.
Other components and connections are the same as those in the first embodiment.
The third concrete implementation mode: the present embodiment will be described with reference to fig. 1, in which the number of the i-shaped keys 4 is two, and the keyway plate 3 and the upper and lower portions of the bearing housing 2 are connected together by one i-shaped key 4.
Other components are connected in the same manner as in the second embodiment.
The fourth concrete implementation mode: referring to fig. 1, the key way plate 3 of the present embodiment is a rectangular plate, and a protrusion 3-1 connected to the bearing housing 2 is provided at the middle of the key way plate 3.
So set up, guarantee the centering nature of steam turbine outer casing 1 and bearing box 2, prevent that the steam turbine outer casing from rocking about. Other components and connection relationships are the same as those in the first, second or third embodiment.
The fifth concrete implementation mode: referring to fig. 1, the embodiment is described, wherein first T-shaped grooves 3-2 matched with T-shaped blocks 4-1 are respectively arranged on two sides of a boss 3-1. The T-shaped block 4-1 is in clearance fit with the first T-shaped groove 3-2.
The sixth specific implementation mode: the embodiment is described with reference to fig. 1, the push-pull device for the steam turbine according to the embodiment further includes a positioning pin 5, two counter bores 3-3 are respectively provided on two sides of the protruding portion 3-1 of the keyway plate 3, and one end of the positioning pin 5 is connected with the outer cylinder 1 of the steam turbine after passing through the counter bores 3-3.
The positioning pin 5 plays a role in positioning between the vertical keyway plate and the cylinder.
The other components and the connection relationship are the same as those in the fifth embodiment.
The seventh embodiment: referring to fig. 1, the middle of the bearing housing 2 is provided with a groove 2-1 engaged with the boss 3-1, and both sides of the groove 2-1 are respectively provided with a second T-shaped groove 2-2 engaged with the T-shaped block 4-1. The T-shaped block 4-1 is in clearance fit with the second T-shaped groove 2-2.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed with the preferred embodiment, it is not limited to the present invention, and any skilled person in the art can make modifications or changes equivalent to the equivalent embodiment without departing from the technical scope of the present invention, but all the modifications, equivalent substitutions, and improvements made to the above embodiments within the spirit and principle of the present invention still belong to the protection scope of the technical solution of the present invention.
Claims (7)
1. The utility model provides a steam turbine push-and-pull device, it includes steam turbine outer casing (1) and bearing box (2), its characterized in that: the push-pull device of the steam turbine further comprises a key groove plate (3) and a plurality of I-shaped keys (4), the key groove plate (3) is located between the steam turbine outer cylinder (1) and the bearing box (2), the key groove plate (3) is fixedly connected with the steam turbine outer cylinder (1), and the key groove plate (3) is connected with the bearing box (2) through the I-shaped keys (4).
2. The push-pull device of a steam turbine according to claim 1, wherein: each I-shaped key (4) comprises two T-shaped blocks (4-1) and a rectangular block (4-2), the two T-shaped blocks (4-1) are oppositely arranged at two ends of the rectangular block (4-2), and two ends of the rectangular block (4-2) are respectively connected with the two T-shaped blocks (4-1) into a whole.
3. The push-pull device of a steam turbine according to claim 2, wherein: the number of the H-shaped keys (4) is two, and the upper part and the lower part of the keyway plate (3) and the bearing box (2) are respectively connected together through one H-shaped key (4).
4. The push-pull device of a steam turbine according to claim 1, wherein: the keyway plate (3) is a rectangular plate body, and the middle part of the keyway plate (3) is provided with a convex part (3-1) connected with the bearing box (2).
5. The push-pull device of a steam turbine according to claim 4, wherein: and two sides of the protruding part (3-1) are respectively provided with a first T-shaped groove (3-2) matched with the T-shaped block (4-1).
6. The push-pull device of a steam turbine according to claim 1, wherein: the push-pull device of the steam turbine further comprises a positioning pin (5), two sides of the boss (3-1) of the keyway plate (3) are respectively provided with a counter bore (3-3), and one end of the positioning pin (5) penetrates through the counter bores (3-3) and then is connected with the outer cylinder (1) of the steam turbine.
7. The push-pull device of a steam turbine according to claim 1, wherein: the middle part of the bearing box (2) is provided with a groove (2-1) matched with the boss (3-1), and two sides of the groove (2-1) are respectively provided with a second T-shaped groove (2-2) matched with the T-shaped block (4-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023038081.4U CN214063077U (en) | 2020-12-16 | 2020-12-16 | Push-pull device of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023038081.4U CN214063077U (en) | 2020-12-16 | 2020-12-16 | Push-pull device of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214063077U true CN214063077U (en) | 2021-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023038081.4U Active CN214063077U (en) | 2020-12-16 | 2020-12-16 | Push-pull device of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214063077U (en) |
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2020
- 2020-12-16 CN CN202023038081.4U patent/CN214063077U/en active Active
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