CN219840706U

CN219840706U - High-efficient through-flow device

Info

Publication number: CN219840706U
Application number: CN202320916116.4U
Authority: CN
Inventors: 从洪伦; 胡志钢; 王伟卿; 卢来为
Original assignee: Xinjiang Xinyi Carbon Energy Environmental Protection Technology Co ltd
Current assignee: Xinjiang Xinyi Carbon Energy Environmental Protection Technology Co ltd
Priority date: 2023-04-21
Filing date: 2023-04-21
Publication date: 2023-10-17
Anticipated expiration: 2033-04-21

Abstract

The utility model relates to the technical field of power plant steam turbines, in particular to a high-efficiency through-flow device, which comprises a main shaft, wherein a first mounting ring and a second mounting ring are sequentially arranged on the outer surface of the main shaft from right to left, and a first adapting ring and a second adapting ring are sequentially arranged on one side of the surface of the first mounting ring from right to left; the blade body, the blade body is installed on the inner wall of first adaptation ring, first adaptation ring is provided with the multiunit, the inside of first adaptation ring is provided with the connecting axle, the connecting axle is installed on the surface of main shaft. According to the utility model, the number of shaft end steam seal turns is properly increased through the shaft end space condition, and the honeycomb steam seal and the contact steam seal are adopted at proper positions, so that steam leakage is further reduced, all moving blades are not provided with loose lacing wires, the middle connecting piece of the last-stage blade is changed into a molded line boss, the flow-around loss is reduced, the flow-through efficiency is improved, the strength and damping performance of the blade are greatly improved, and the use effect of the device is ensured.

Description

High-efficient through-flow device

Technical Field

The utility model relates to the technical field of power plant steam turbines, in particular to a high-efficiency through-flow device.

Background

With the development of national and global economy, energy and environmental protection in recent years, the current situation of a thermal power enterprise has also presented some new characteristics. Energy conservation and emission reduction are improved to constraint indexes of the development of thermal power enterprises; the electricity quantity dispatching of thermal power generation enterprises is gradually adjusted from nameplate dispatching to energy-saving dispatching; the price of the domestic and foreign coal rises for 7 years, and the operating pressure of thermal power enterprises increases rapidly. Under the background, the coal consumption level of the unit and the heat consumption level of the steam turbine become key indexes for influencing the survival and development of thermal power enterprises, and effective measures are required to be taken to greatly reduce the power supply coal consumption level of the steam turbine generator unit in order to keep the development advantages in market competition.

Meanwhile, the steam turbine is low in heat efficiency in use, and leakage of steam can be further reduced after the honeycomb steam seal is used, but when the honeycomb steam seal is installed, the connectivity between the honeycomb steam seal and the steam turbine is poor, connection is not stable enough, and part of leakage of steam can be reduced later, so that improvement and improvement of the problems are needed to be solved at present.

Disclosure of Invention

The utility model aims to provide a high-efficiency through-flow device, which is used for solving the problems that the steam turbine provided in the background art is low in heat efficiency in use, and steam leakage can be further reduced after a honeycomb steam seal is used, but the honeycomb steam seal is poor in connectivity and unstable in connection in installation, and the steam leakage is caused in the follow-up process.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the high-efficiency through-flow device comprises a main shaft, wherein a first mounting ring and a second mounting ring are sequentially arranged on the outer surface of the main shaft from right to left, and a first adapting ring and a second adapting ring are sequentially arranged on one side of the surface of the first mounting ring from right to left;

the blade body, the blade body is installed on the inner wall of first adaptation ring, first adaptation ring is provided with the multiunit, the inside of first adaptation ring is provided with the connecting axle, the connecting axle is installed on the surface of main shaft.

Preferably, the right side surface of the second adapter ring is provided with a first mounting shell, and the right side surface of the first adapter ring is provided with a second mounting shell.

Preferably, a first mounting disc is arranged on the other side of the surface of the main shaft, and the outer surface of the first mounting disc is fixedly connected with the stationary blade grating body.

Preferably, one end of the stationary blade grating body, which is far away from the first mounting plate, is provided with a stabilizing ring, and the stabilizing rings are provided with a plurality of groups.

Preferably, the outer end surface of the main shaft is provided with a first steam seal ring, the right side surface of the first steam seal ring is provided with a connecting ring, the right side surface of the connecting ring is fixedly connected with an adsorption ring, and the surface of the adsorption ring is provided with a through hole.

Preferably, the back of the first steam seal ring is provided with a second steam seal ring, and the back of the second steam seal ring is provided with a third steam seal ring.

Preferably, the top fixedly connected with first connecting block of second gland seal ring, the slot has been seted up to the inside of first connecting block, the top fixedly connected with second connecting block of third gland seal ring, the inside of slot is provided with the inserted bar, the inserted bar runs through the inside of second connecting block and first connecting block.

Compared with the prior art, the utility model has the beneficial effects that:

1. this high-efficient through-flow device, through the main shaft that sets up, first collar, the second collar, first adaptation ring, the second adaptation ring, the blade main part, the connecting axle, first installation shell, the second installation shell, first mounting disc, quiet leaf gate body and stabilizing ring, when using, at first the whole device adjustment each level pitch diameter, the enthalpy drop distribution is optimized and the speed ratio at each level, improve the in-stage efficiency, can strengthen the stability when connecting through the connection of first collar and second collar, simultaneously can ensure the device vapor seal effect when using through first adaptation ring and second adaptation ring, through reforming transform the installation to the blade main part, at the higher middling pressure rear portion of gland and low pressure all stator blade, simultaneously first installation disc, quiet leaf gate body and stabilizing ring adopt the buckling joint formation quiet leaf gate of full four-dimensional technical optimization, further improve the stage efficiency of steam turbine, high, well, low pressure moving blade top increase radial seal tooth number, the band is processed into the structure that has the boss, with high tooth band root, the turbine root seal effect is not, the turbine root seal, the turbine blade is improved, the axial tip seal performance is greatly reduced, the steam seal loss is realized, and the proper seal performance is not is realized to the turbine blade, all the steam seal performance is improved, the steam seal performance is greatly is improved, and the steam seal performance is improved, and has been improved.

2. This high-efficient through-flow device, through the first vapour lock ring that sets up, the go-between, the adsorption ring, the through-hole, the second vapour lock ring, the third vapour lock ring, first connecting block and second connecting block, when using, at first through install the go-between at the back of first vapour lock ring, through the adsorption ring with do the back mutual contact of sufficient first mounting disc, the sealed effect when guaranteeing to connect, install together simultaneously through second vapour lock ring and third vapour lock ring, through inserting the inserted bar and establish the inside that gets into second connecting block and first connecting block, the inside of entering slot is inserted to the inserted bar, the sealed effect when guaranteeing multiunit second vapour lock ring and third vapour lock ring installation, the connection stability is strengthened, the design is embodied.

Drawings

FIG. 1 is a schematic view of a three-dimensional structure of the present utility model;

FIG. 2 is a schematic perspective view of a first adapter ring structure according to the present utility model;

FIG. 3 is a schematic perspective view of a first mounting plate and stabilizer ring configuration of the present utility model;

FIG. 4 is a schematic view showing the first seal ring and connecting ring structure of the present utility model;

fig. 5 is a schematic diagram illustrating the separation of the third gland ring and the second gland ring according to the present utility model.

In the figure: 1. a main shaft; 2. a first mounting ring; 3. a second mounting ring; 4. a first adapter ring; 5. a second adapter ring; 6. a blade body; 7. a connecting shaft; 8. a first mounting case; 9. a second mounting case; 10. a first mounting plate; 11. a vane cascade body; 12. a stabilizing ring; 13. a first vapor seal ring; 14. a connecting ring; 15. an adsorption ring; 16. a through hole; 17. a second gland ring; 18. a third gland ring; 19. a first connection block; 20. a second connection block; 21. a slot; 22. and a plunger.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, an embodiment of the present utility model is provided:

the utility model relates to a high-efficiency through-flow device, wherein a blade main body 6 and a stationary blade grating body 11 used in the utility model are directly purchased products in the market, and the principle and the connection mode are all the prior art well known to the person skilled in the art, so that the high-efficiency through-flow device is not repeated, and the high-efficiency through-flow device comprises a main shaft 1, wherein the outer end surface of the main shaft 1 is provided with a first steam seal ring 13, the back surface of the first steam seal ring 13 is provided with a second steam seal ring 17, the top end of the second steam seal ring 17 is fixedly connected with a first connecting block 19, the inside of the first connecting block 19 is provided with a slot 21, the top end of the third steam seal ring 18 is fixedly connected with a second connecting block 20, the inside of the slot 21 is provided with a plug rod 22, the plug rod 22 penetrates through the inside of the second connecting block 20 and the first connecting block 19, the back surface of the second steam seal ring 17 is provided with a third steam seal ring 18, the right side surface of the first steam seal ring 13 is provided with a connecting ring 14, and the right side surface of the connecting ring 14 is fixedly connected with an adsorption ring 15, the surface of the adsorption ring 15 is provided with a through hole 16, the other side of the surface of the main shaft 1 is provided with a first mounting disc 10, the outer surface of the first mounting disc 10 is fixedly connected with a stationary blade grating body 11, one end of the stationary blade grating body 11 far away from the first mounting disc 10 is provided with a plurality of stabilizing rings 12, the outer surface of the main shaft 1 is provided with a first mounting ring 2 and a second mounting ring 3 in sequence from right to left, one side of the surface of the first mounting ring 2 is provided with a first adapting ring 4 and a second adapting ring 5 in sequence from right to left, the right side surface of the second adapting ring 5 is provided with a first mounting shell 8, the right side surface of the first adapting ring 4 is provided with a second mounting shell 9, the connecting ring 14 is mounted on the back of the first steam sealing ring 13, the connecting rings 15 and the back of the first mounting disc 10 are contacted mutually through the adsorption ring 15, so as to ensure the sealing effect during connection, meanwhile, after the second gland sealing ring 17 and the third gland sealing ring 18 are installed together, through inserting the inserting rod 22 into the second connecting block 20 and the first connecting block 19, the inserting rod 22 is inserted into the slot 21, the sealing effect of a plurality of groups of second gland sealing rings 17 and the third gland sealing ring 18 during installation is ensured, the connection stability is enhanced, all the partition plates adopt welded steel partition plates, the welded steel partition plates are good in material quality, the blade grid part is processed and assembled with high precision, the shroud ring at the top of the traditional moving blade adopts a riveting mode, the newly designed blade top shroud ring and the blade form a whole body, and the moving blade of the structure is connected in a whole circle through different modes such as pre-torsion assembly, welding or special structures at the shroud ring part, the vibration stress of the moving blade of the structure is small, the stress concentration caused by riveting does not exist, the moving blade of the structure is very safe and reliable, the moving blade of the high-pressure part adopts an inner inclined outer flat self-belt shroud ring, a smooth channel surface can be formed, the flow loss of the number of teeth is reduced, the outer edge of the self-belt is flat, the blade top shroud ring can be increased to 4 blades, the blade top seal can be increased to the blade top, the blade top is more than 4 blades, the blade top has high-level leakage efficiency, the effect is improved, the high, the efficiency of the self-pressure loss is better than the blade stage, and the blade leakage effect is better than the blade stage, and the blade efficiency is better than the blade stage;

the blade body 6, the blade body 6 is installed on the inner wall of first adapter ring 4, first adapter ring 4 is provided with the multiunit, the inside of first adapter ring 4 is provided with connecting axle 7, connecting axle 7 installs on the surface of main shaft 1, the overall device adjusts each level pitch diameter, the distribution of enthalpy drop and speed ratio at every level are optimized, improve the in-stage efficiency, stability when can strengthen the connection through the connection of first collar 2 and second collar 3, simultaneously through the steam seal effect when can ensure the device in use through first adapter ring 4 and second adapter ring 5, through reforming transform the installation to blade body 6, at the higher middling rear portion of steam channel height and low pressure all stator blade, simultaneously first mounting disc 10, the stator blade bars body 11 and stabilizing ring 12 adopt the curved joint formation quiet blade bars of full four-dimensional technology optimization, further improve the stage efficiency of steam turbine, high, the middle and low pressure top increase radial seal teeth, the shroud is processed into the structure with the boss, with high low tooth band, the root portion of blade root portion cooperatees, the turbine blade root, the turbine blade is reduced, the turbine blade is not only increased in the radial seal performance, the turbine blade is improved, and the turbine blade is not contacted with the axial end profile, the steam seal loss is greatly reduced, and the proper steam seal loss is not increased, the condition is guaranteed, and all the steam seal performance is greatly improved, and the steam seal performance is improved, and has been improved.

Working principle: when the device is used by staff, the device is externally connected with a power supply so as to provide power support for the device, when the device is used, the whole device is firstly used for adjusting the diameters of all stages, the enthalpy drop distribution and the speed ratios of all stages are optimized, the in-stage efficiency is improved, the stability during connection can be enhanced through the connection of the first mounting ring 2 and the second mounting ring 3, the steam sealing effect of the device can be ensured when the device is used through the first mounting ring 4 and the second mounting ring 5, the blade main body 6 is reformed and installed, all stationary blades at the middle pressure rear part and the low pressure with higher steam passage height are simultaneously formed by adopting the bending and twisting combination optimized by adopting the full four-dimensional technology through the first mounting disc 10, the stationary blade grating body 11 and the stabilizing ring 12, the stage efficiency of the steam turbine is further improved, the number of radial steam sealing teeth is increased at the tops of all stages of the moving blades of high, medium pressure and low pressure, the shroud is processed into a structure with a boss, the shroud is matched with a high-low tooth shroud steam seal, steam leakage at the top of a movable blade is reduced, radial steam seals are added at the root parts of a high-pressure partition plate and a medium-pressure partition plate, steam leakage at the root parts of the blades is reduced, the number of turns of the shaft-end steam seals is properly increased according to the space condition of the shaft ends, honeycomb steam seals and contact type steam seals are adopted at proper positions to further reduce the steam leakage, all the movable blades are not provided with loose lacing wires any more, a middle connecting piece of a final blade is changed into a molded line boss, the flow-around loss is reduced, the flow-through efficiency is improved, the strength and the damping performance of the blade are greatly improved, the service effect of the device is ensured, the connecting ring 14 is arranged on the back surface of the first steam seal ring 13, the sealing effect in connection is ensured by mutually contacting the back surface of the first mounting disc 10 through the adsorption ring 15, and the second steam seal ring 17 and the third steam seal ring 18 are simultaneously arranged together, by inserting the insert rod 22 into the second connection block 20 and the first connection block 19, the insert rod 22 is inserted into the slot 21, so that the sealing effect of the plurality of groups of second gland rings 17 and third gland rings 18 during installation is ensured, and all the working principles of the present utility model are described above.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a high-efficient through-flow device, includes main shaft (1), the surface of main shaft (1) has set gradually first collar (2) and second collar (3) from right to left, its characterized in that: a first adapting ring (4) and a second adapting ring (5) are sequentially arranged on one side of the surface of the first mounting ring (2) from right to left;

the blade body (6), blade body (6) are installed on the inner wall of first adaptation ring (4), first adaptation ring (4) are provided with the multiunit, the inside of first adaptation ring (4) is provided with connecting axle (7), connecting axle (7) are installed on the surface of main shaft (1).

2. A high efficiency flow-through apparatus as claimed in claim 1, wherein: the right side surface of the second adapter ring (5) is provided with a first mounting shell (8), and the right side surface of the first adapter ring (4) is provided with a second mounting shell (9).

3. A high efficiency flow-through apparatus as claimed in claim 1, wherein: the novel spindle is characterized in that a first mounting disc (10) is arranged on the other side of the surface of the spindle (1), and a stationary blade grid body (11) is fixedly connected to the outer surface of the first mounting disc (10).

4. A high efficiency flow-through apparatus as claimed in claim 3, wherein: one end of the stationary blade grating body (11) far away from the first mounting plate (10) is provided with a stabilizing ring (12), and the stabilizing rings (12) are provided with a plurality of groups.

5. A high efficiency flow-through apparatus as claimed in claim 1, wherein: the novel steam sealing device is characterized in that a first steam sealing ring (13) is arranged on the outer end surface of the main shaft (1), a connecting ring (14) is arranged on the right side surface of the first steam sealing ring (13), an adsorption ring (15) is fixedly connected to the right side surface of the connecting ring (14), and a through hole (16) is formed in the surface of the adsorption ring (15).

6. A high efficiency flow-through apparatus as set forth in claim 5 wherein: the back of the first steam seal ring (13) is provided with a second steam seal ring (17), and the back of the second steam seal ring (17) is provided with a third steam seal ring (18).

7. The high efficiency flow device of claim 6, wherein: the top fixedly connected with first connecting block (19) of second gland seal ring (17), slot (21) have been seted up to the inside of first connecting block (19), the top fixedly connected with second connecting block (20) of third gland seal ring (18), the inside of slot (21) is provided with inserted bar (22), inside that inserted bar (22) runs through second connecting block (20) and first connecting block (19).