CN209800036U - Outer fringe dehydrating unit of portable nuclear power steam turbine in ocean - Google Patents
Outer fringe dehydrating unit of portable nuclear power steam turbine in ocean Download PDFInfo
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- CN209800036U CN209800036U CN201920738518.3U CN201920738518U CN209800036U CN 209800036 U CN209800036 U CN 209800036U CN 201920738518 U CN201920738518 U CN 201920738518U CN 209800036 U CN209800036 U CN 209800036U
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Abstract
A dehumidification device for the outer edge of an ocean movable nuclear turbine relates to the field of energy power. The utility model relates to a solve at the turbine through-flow part, the existence of moisture in the steam has reduced the efficiency of steam turbine, makes the through-flow part take place strong water and loses, has shortened the life's of blade problem. The utility model comprises a cylinder, a clapboard A, a clapboard B, a static blade and a moving blade, wherein the inner wall of the cylinder is provided with a plurality of clapboard mounting grooves and a water catching channel, the clapboard A and the clapboard B are respectively arranged in two adjacent clapboard mounting grooves, the clapboard A and the clapboard B are respectively provided with a plurality of static blades along the circumferential direction, and the moving blade is positioned between the clapboard A and the clapboard B; the water catching channel is positioned between two adjacent partition plate mounting grooves, the partition plate A is provided with a water catching ring A, the partition plate B is provided with a water catching ring B, and the water catching ring A on the partition plate A and the water catching ring B on the partition plate B are both positioned above the blade crowns of the moving blades. The utility model is used for steam turbine outer fringe dehumidification.
Description
Technical Field
The utility model relates to a portable nuclear power steam turbine outer fringe dehydrating unit in ocean. Belongs to the field of energy power.
Background
The offshore floating nuclear power station (also called an offshore nuclear power platform) is a small-sized offshore mobile nuclear power station, is an organic combination of a small-sized nuclear reactor and ship engineering, can provide safe and effective energy supply for offshore oil exploitation and remote islands, and can also be used in the fields of high-power ships and seawater desalination.
In the through-flow part of the steam turbine, the efficiency of the steam turbine is reduced due to the existence of moisture in the steam, strong water erosion also occurs to the through-flow part, and the water erosion is accompanied with the corrosion process caused by corrosive impurities such as chloride, sulfate, carbon dioxide and the like, so that the service life of the blade is shortened, the performance of the steam turbine is more deteriorated, the economical efficiency of the steam turbine is reduced, and meanwhile, hidden dangers are brought to the safety and reliability of the steam turbine.
SUMMERY OF THE UTILITY MODEL
the utility model relates to a solve at the turbine through-flow part, the existence of moisture in the steam has reduced the efficiency of steam turbine, still makes the through-flow part take place strong water erosion simultaneously, has shortened the life of blade for steam turbine performance deterioration more has reduced the economic nature of steam turbine, brings hidden danger problem for the fail safe nature of steam turbine simultaneously. The outer edge dehumidification device of the marine movable nuclear turbine is provided.
The utility model adopts the technical proposal that:
The outer edge dehumidification device comprises a cylinder 1, a partition plate A2, a partition plate B6, stationary blades 3 and moving blades 4, wherein the inner wall of the cylinder 1 is provided with a plurality of partition plate installation grooves 1-2, the partition plate A2 and the partition plate B6 are respectively installed in the two adjacent partition plate installation grooves 1-2, the partition plate A2 and the partition plate B6 are respectively provided with the plurality of stationary blades 3 along the circumferential direction, and the moving blades 4 are positioned between the partition plate A2 and the partition plate B6; the water-catching device is characterized in that the inner wall of the cylinder 1 is also provided with water-catching channels 1-1, the water-catching channels 1-1 are positioned between the two adjacent partition plate installation grooves 1-2, a partition plate A2 is provided with a water-catching ring A2-1, a partition plate B6 is provided with a water-catching ring B6-1, the water-catching ring A2-1 on the partition plate A2 and the water-catching ring B6-1 on the partition plate B6 are both positioned above the blade tops of the moving blades 4, and the water-catching ring A2-1 and the water-catching ring B6-1 are arranged on notches of the water-catching channels 1-1.
Furthermore, the tip shroud of the moving blade 4 is inclined toward the steam inlet side.
Furthermore, a gap 4-1 is formed at the tip shroud of the moving blade 4, and the gap 4-1 is positioned at the steam outlet side of the moving blade 4.
Furthermore, an annular inverted funnel shape is formed between the water catching ring A2-1 on the partition A2 and the water catching ring B6-1 on the partition B6.
Further, the partition plate A2 and the partition plate B6 are both fixedly installed in the partition plate installation groove 1-2 through an axial positioning pin 5.
compared with the prior art, the utility model the beneficial effect who produces is:
The outer edge dehumidification device removes partial water drops in the through-flow wet steam by utilizing the centrifugal force, reduces the wet steam loss, can effectively prolong the service life of the turbine blade, prolongs the service life of the blade by 20 percent, and improves the economical efficiency, the safe reliability and the maintainability of the unit.
Drawings
FIG. 1 is a schematic view of the overall structure of an outer edge dehumidification device;
FIG. 2 is a schematic structural view of a cylinder having a partition mounting groove and a water catching channel formed in an inner wall thereof;
FIG. 3 is a schematic structural view of a rotor blade;
Fig. 4 is a partial enlarged view at I in fig. 1.
Detailed Description
The first embodiment is as follows: referring to fig. 1 to 4, the outer edge dehumidification device according to the present embodiment is described in detail, and includes: the steam turbine comprises a cylinder 1, a partition A2, a partition B6, static blades 3 and moving blades 4, wherein the inner wall of the cylinder 1 is provided with a plurality of partition mounting grooves 1-2, the partition A2 and the partition B6 are respectively mounted in the two adjacent partition mounting grooves 1-2, the partition A2 and the partition B6 are respectively provided with the static blades 3 along the circumferential direction, the static blades 3 convert the heat energy of steam into kinetic energy, the moving blades 4 are positioned between the partition A2 and the partition B6, one row of the static blades and one row of the moving blades form a group of working units (stages) of the steam turbine, and the steam turbine is internally provided with a plurality of groups of working units; the water catching grooves 1-1 are arranged on the inner wall of the cylinder 1 at intervals, the water catching grooves 1-1 are positioned between two adjacent partition plate installation grooves 1-2, the partition plate A2 is provided with a water catching ring A2-1, the partition plate B6 is provided with a water catching ring B6-1, the water catching ring A2-1 on the partition plate A2 and the water catching ring B6-1 on the partition plate B6 are both positioned above the tops of the moving blades 4, the water catching ring A2-1 and the water catching ring B6-1 are arranged on the notches of the water catching grooves 1-1, a gap is formed between the water catching ring A2-1 and the water catching ring B6-1, and the gap is opposite to the water catching grooves 1-1.
When wet steam flows into the turbine to do work through flow, the turbine moving blade rotates at a high speed, meanwhile, the wet steam has a certain circumferential speed component, water drops contained in the wet steam are thrown to a blade crown at the top of the moving blade under the action of centrifugal force, then are thrown into a gap between the water catching ring A2-1 and the water catching ring B6-1 under the action of the centrifugal force, and finally flow into a water catching channel in the cylinder to be discharged out of the cylinder, so that the outer edge dehumidification effect is realized, the wet steam loss is reduced, and the service life of the blade is prolonged.
The second embodiment is as follows: the present embodiment is different from the specific embodiment in that, in the present embodiment, as shown in fig. 3, the tip shroud of the moving blade 4 is disposed to be inclined toward the steam inlet side, and when high-temperature wet steam flows into the turbine nozzle and performs through-flow work, water droplets contained in the wet steam are thrown to the tip shroud of the moving blade tip by the centrifugal force, and the tip shroud of the moving blade 4 is disposed to be inclined, so that the resistance to the steam can be reduced, and the economy of the plant can be improved.
Other components and connection modes are the same as those of the first embodiment.
The third concrete implementation mode: the present embodiment is different from the present embodiment in that, in the present embodiment, as shown in fig. 3, a notch 4-1 is formed in the tip shroud of the moving blade 4, the notch 4-1 is located on the steam outlet side of the moving blade 4, the notch 4-1 and the gap between the two water capture rings 2-1 are located in the same vertical plane as the water capture channel 1-1, and water droplets contained in wet steam are collected to the notch 4-1 of the tip shroud of the moving blade 4 along the inclined surface of the tip shroud of the moving blade 4, and are thrown to the gap between the two water capture rings 2-1 by the centrifugal force, and further flow into the water capture channel 1-1 in the cylinder, thereby performing the dehumidification function.
Other components and connection modes are the same as those of the first embodiment.
the fourth concrete implementation mode: the difference between this embodiment and the specific embodiment is that, in this embodiment, as shown in fig. 4, in order to better collect the water droplets contained in the wet steam, the inner side walls of the water catching ring a2-1 and the water catching ring B6-1 are respectively disposed to be inclined inward, an inverted funnel-shaped space is formed between the inner side walls on the vertical plane, the water droplets contained in the wet steam are thrown onto the inner side walls of the water catching ring a2-1 and the water catching ring B6-1 by the centrifugal force, and the water droplets flow into the gap at the bottom of the funnel along the inner walls of the water catching ring a2-1 and the water catching ring B6-1 by the centrifugal force, so as to flow into the water catching channel 1-1 in the cylinder.
Other components and connection modes are the same as those of the first embodiment.
The fifth concrete implementation mode: the difference between this embodiment and any one of the first to fourth embodiments is that in this embodiment, as shown in fig. 1, the water capture ring a2-1 on the partition a2 and the water capture ring B6-1 on the partition B6 are both fixedly mounted in the partition mounting groove 1-2 by the axial positioning pin 5.
Other components and connection modes are the same as any one of the first to fourth embodiments.
The utility model discloses a theory of operation is: when wet steam flows into the steam turbine to do work through flow, the steam turbine moving blade rotates at a high speed, meanwhile, the wet steam has a certain circumferential speed component, water drops contained in the wet steam are thrown to a blade crown notch (gap) at the top of the moving blade under the action of centrifugal force, then are thrown to a gap between the water catching ring A2-1 and the water catching ring B6-1 under the action of the centrifugal force, and finally flow into a water catching channel in the cylinder to be discharged out of the cylinder, so that the outer edge dehumidification effect is realized. By utilizing the action of centrifugal force, partial water drops contained in the steam in the through flow are removed, the moisture loss is reduced, meanwhile, the service life of the blades can be effectively prolonged, and the economical efficiency, the safe reliability and the maintainability of the unit are improved.
Claims (5)
1. A peripheral dehumidification device of an ocean movable nuclear turbine comprises a cylinder (1), a partition plate A (2), a partition plate B (6), stationary blades (3) and moving blades (4), wherein the inner wall of the cylinder (1) is provided with a plurality of partition plate mounting grooves (1-2), the partition plate A (2) and the partition plate B (6) are respectively mounted in the two adjacent partition plate mounting grooves (1-2), the partition plate A (2) and the partition plate B (6) are respectively provided with a plurality of stationary blades (3) along the circumferential direction, and the moving blades (4) are positioned between the partition plate A (2) and the partition plate B (6); the water catching device is characterized in that a water catching channel (1-1) is further formed in the inner wall of the cylinder (1), the water catching channel (1-1) is located between the two adjacent partition plate installation grooves (1-2), a water catching ring A (2-1) is arranged on the partition plate A (2), a water catching ring B (6-1) is arranged on the partition plate B (6), the water catching ring A (2-1) on the partition plate A (2) and the water catching ring B (6-1) on the partition plate B (6) are located above the tops of the moving blades (4), and the water catching ring A (2-1) and the water catching ring B (6-1) are arranged in a notch of the water catching channel (1-1).
2. The outer edge dehumidification device as claimed in claim 1, wherein the tip shroud of the rotor blade (4) is inclined towards the steam inlet side.
3. The outer edge dehumidification device as claimed in claim 1, wherein a gap (4-1) is formed in the tip shroud of the rotor blade (4), and the gap (4-1) is located on the steam outlet side of the rotor blade (4).
4. the rim dehumidification device as claimed in claim 1, wherein a ring-shaped inverted funnel shape is formed between the water capture ring A (2-1) of the partition A (2) and the water capture ring B (6-1) of the partition B (6).
5. A rim de-humidifying device according to any one of claims 1-4, wherein the partition A (2) and the partition B (6) are both fixedly mounted in the partition mounting groove (1-2) by means of an axial positioning pin (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920738518.3U CN209800036U (en) | 2019-05-21 | 2019-05-21 | Outer fringe dehydrating unit of portable nuclear power steam turbine in ocean |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920738518.3U CN209800036U (en) | 2019-05-21 | 2019-05-21 | Outer fringe dehydrating unit of portable nuclear power steam turbine in ocean |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209800036U true CN209800036U (en) | 2019-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920738518.3U Active CN209800036U (en) | 2019-05-21 | 2019-05-21 | Outer fringe dehydrating unit of portable nuclear power steam turbine in ocean |
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| CN (1) | CN209800036U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043336A (en) * | 2019-05-21 | 2019-07-23 | 中国船舶重工集团公司第七0三研究所 | A kind of ocean movable type nuclear steam turbine outer rim dehumidification device |
-
2019
- 2019-05-21 CN CN201920738518.3U patent/CN209800036U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043336A (en) * | 2019-05-21 | 2019-07-23 | 中国船舶重工集团公司第七0三研究所 | A kind of ocean movable type nuclear steam turbine outer rim dehumidification device |
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