WO2023103246A1

WO2023103246A1 - Main shaft seal control system for hydroelectric plant

Info

Publication number: WO2023103246A1
Application number: PCT/CN2022/087044
Authority: WO
Inventors: 陈鑫; 何沐星; 寇林; 田顺德; 马大海; 刘德翼; 胡涛; 李兵伟; 王现锋
Original assignee: 华能西藏雅鲁藏布江水电开发投资有限公司
Priority date: 2021-12-06
Filing date: 2022-04-15
Publication date: 2023-06-15
Also published as: CN114392603A; CN114392603B

Abstract

A main shaft seal control system for a hydroelectric plant. The control system comprises a purification module (100), a high-level water tank (200) and a technical water supply pipeline (300) separately connected to the purification module (100), and a water filtering assembly (400) connected to the purification module (100). According to the system, two paths of water sources are provided as a water source in a high/low water season; a pipeline booster pump (503) is provided for use in emergency when the flow pressure is low in a normal water supply mode, and can be operated for a long period of time, so as to provide a guarantee for bush overheating prevention of a unit main shaft seal; the water quality is purified by means of the purification module (100), so as to prevent the blockage of a device, thereby prolonging the service life of the device.

Description

A main shaft sealing control system for a hydropower station

technical field

The invention relates to the technical field of hydropower station maintenance, in particular to a main shaft seal control system of a hydropower station.

Background technique

At present, there are two common water supply modes for the main shaft seal water supply system of hydropower stations: clean water and technical water supply. The clean water is supplied by the high-level pool, and the technical water supply is supplied by the technical water supply pump of the unit. The two water sources supply water to the main shaft sealing pipeline through the opening and closing of the electric valve.

The commonly used spindle seal water supply system simply uses clean water for water supply in the wet season, and unit technology for water supply in the dry season. The two methods are switched by manual switching. The water supply method is relatively single. If the pressure of any water supply method is low and the flow is interrupted, switch If it is not timely, it will cause the unit to shut down in an accident. At the same time, the heavy coarse-grained mud and sand in the technical water supply of the unit will block the water filter, reduce the life of the water filter, cause serious wear of the main shaft seal, and affect the safe and stable operation of the unit.

Contents of the invention

The purpose of this section is to outline some aspects of embodiments of the invention and briefly describe some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and titles of this application, to avoid obscuring the purpose of this section, abstract and titles, and such simplifications or omissions should not be used to limit the scope of the invention.

In view of the problems mentioned above or existing in the prior art, the present invention is proposed.

Therefore, the purpose of the present invention is to provide a main shaft seal control system for hydropower stations, which can provide two water sources as water sources during the wet and dry seasons, provide protection for the main shaft seal of the unit to prevent tile burning, purify water quality, and increase equipment service life.

In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions: a main shaft seal control system of a hydropower station, which includes a control system including a purification module, a high-level water pool and a technical water supply pipeline connected to the purification module, and a water filter connected to the purification module components.

As a preferred solution of the main shaft sealing control system of the hydropower station of the present invention, a first electric valve is arranged between the high-level pool and the purification module, and a second electric valve is arranged between the technical water supply pipeline and the purification module.

As a preferred solution of the main shaft sealing control system of the hydropower station of the present invention, wherein: the fourth electric valve, the fifth electric valve, and the fourth electric valve and the fifth electric valve are respectively arranged between the high-level pool and the technical water supply pipeline. A booster pump; a third electric valve is provided on the side of the purification module.

As a preferred solution of the main shaft sealing control system of a hydropower station in the present invention, wherein: the water filter assembly includes a sixth electric valve and a seventh electric valve respectively connected to the purification module, a first water filter connected to the sixth electric valve, and a The first drain valve connected to the first water filter, the second water filter connected to the seventh electric valve, and the second drain valve connected to the second water filter.

As a preferred solution of the sealing control system for the main shaft of the hydropower station of the present invention, it further includes a measuring component, which includes an electromagnetic flowmeter and a pressure transmitter connected to the water filtering component.

As a preferred solution of the main shaft sealing control system of the hydropower station of the present invention, wherein: the purification module includes a pipeline assembly, a separation assembly arranged on both sides of the pipeline assembly, a purification assembly arranged in the pipeline assembly and extending out of the pipeline assembly at one end, and connected to the pipeline assembly. Support frame for component connection.

As a preferred solution of the main shaft sealing control system of the hydropower station of the present invention, wherein: the pipeline assembly includes a buffer pipeline, an impact pipeline connected with the buffer pipeline, a first restriction ring arranged at the inlet end of the impact pipe, and a second restriction ring arranged inside the first restriction ring. Two confinement circles, a deposition chamber arranged between the first confinement circle and the second confinement circle, an impact chamber disposed at the end of the second confinement circle and the impact pipe, symmetrically arranged first screening ports on both sides of the deposition chamber, and symmetrically arranged The second screening port on both sides of the impact chamber; the first restricting ring has the same structure as the second restricting ring; the first restricting ring includes a blocking surface arranged on one side, an arc-shaped folding surface communicated with the blocking surface, and a The extended surface on the other side.

As a preferred solution of the main shaft sealing control system of the hydropower station of the present invention, wherein: the separation assembly includes two groups of communicating cavities arranged symmetrically on both sides of the pipeline assembly, and a confluence pipe connected to the communicating cavities; the communicating cavities pass through the first screening The port and the second screen port are in communication with the piping assembly.

As a preferred solution of the main shaft seal control system of the hydropower station of the present invention, wherein: the purification assembly includes a distance limiting frame arranged on one side of the pipeline assembly, a moving shaft movably connected with the distance limiting frame, and a sealing block arranged on the moving shaft , a V-shaped elastic piece arranged on one side of the sealing block, a horizontal piece respectively arranged at both ends of the V-shaped elastic piece, two sets of plug-in ends symmetrically arranged on the horizontal piece, a rotating sleeve arranged outside the moving shaft, and a ring arranged on the Multiple sets of sockets in the middle of the rotating sleeve, multiple sets of impact power blades installed obliquely at one end of the rotating sleeve, collars installed at the other end of the rotating sleeve, small spirals installed in the rotating sleeve and connected to the moving shaft The deflector, the large spiral deflector connected with the small spiral deflector and arranged on the outside of the rotating sleeve, and the conical elastic screening piece connected to the end of the moving shaft; the bottom end of the impact pipe is provided with a collar limit block, A limit groove which is movably connected with the collar is arranged in the limit block of the collar.

As a preferred solution of the main shaft sealing control system of the hydropower station of the present invention, wherein: the conical elastic screening sheet includes a conical elastic sheet, a third screening port arranged on the conical elastic sheet, and multiple sets of arrays arranged in the middle of the conical elastic sheet The impact extension groove and multiple groups of auxiliary blades are arrayed at the bottom of the conical elastic sheet; the auxiliary blades are provided with inclined surfaces.

Beneficial effects of the present invention: the present invention provides two water sources as water sources in the high and low seasons, and the designed pipeline booster pump can be used for emergency when the flow pressure is low under the normal water supply mode, and can also run for a long time to seal the main shaft of the unit The prevention of burning tiles provides a guarantee, and the water quality is purified through the purification module to prevent the equipment from being blocked and improve the service life of the equipment.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort. in:

Figure 1 is the implementation structure diagram of the main shaft seal control system of the hydropower station

Figure 2 is a structural diagram of the purification module of the main shaft seal control system of the hydropower station.

Figure 3 is an omitted diagram of the partial structure of the purification module of the main shaft seal control system of the hydropower station.

FIG. 4 is an internal structure diagram of FIG. 3 .

Fig. 5 is a structural diagram of the first confinement circle of the main shaft sealing control system of the hydropower station.

Fig. 6 is a structural diagram of the purification component of the main shaft seal control system of the hydropower station.

Fig. 7 is a diagram of the internal structure of the purification component of the main shaft seal control system of the hydropower station.

Detailed ways

In order to make the above objects, features and advantages of the present invention more obvious and comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.

Second, "one embodiment" or "an embodiment" referred to herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. "In one embodiment" appearing in different places in this specification does not all refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

Example 1

Referring to Figures 1 to 7, it is the first embodiment of the present invention. This embodiment provides a main shaft seal control system of a hydropower station, which can provide two water sources as water sources in the wet and dry seasons, and provides a guarantee for the main shaft seal of the unit to prevent tile burning. Guarantee, purify water quality, improve equipment service life.

Specifically, the control system M includes a purification module 100 , a high-level pool 200 and a technical water supply pipeline 300 respectively connected to the purification module 100 , and a water filter assembly 400 connected to the purification module 100 .

Further, a first electric valve 201 is provided between the elevated pool 200 and the purification module 100 , and a second electric valve 301 is provided between the technical water supply pipeline 300 and the purification module 100 .

Further, a fourth electric valve 501 and a fifth electric valve 502 are arranged between the high-level pool 200 and the technical water supply pipeline 300, and are connected to the fourth electric valve 501 and the fifth electric valve 502 respectively. booster pump 503; the side of the purification module 100 is provided with a third electric valve 504.

Further, the water filtering assembly 400 includes a sixth electric valve 401 and a seventh electric valve 402 respectively connected to the purification module 100, a first water filter 403 connected to the sixth electric valve 401, and a first water filter 403 connected to the purification module 100. The first drain valve 404 connected to the first water filter 403 , the second drain valve 405 connected to the seventh electric valve 402 , and the second drain valve 406 connected to the second water filter 405 .

Further, a measurement assembly 600 is included, which includes an electromagnetic flowmeter 601 and a pressure transmitter 602 connected to the water filter assembly 400 .

The principle of this system is: select the high level pool 200 for water supply during the high water season, when the main shaft sealed water supply system receives the input order, the first electric valve 201 is opened, the sixth electric valve 401 is opened, and the water flows through the purification module 100, the first water filter The device 403, the electromagnetic flowmeter 601, and the pressure sensor 602 reach the seal of the main shaft. When the flow rate or pressure is less than the set value, the booster pump 503 is turned on after a delay, and the booster pump linkage electric valve 4 is opened to ensure the water supply pressure and flow rate; When the differential pressure of the first water filter 403 is high, the electric valve 7 is opened, and the sixth electric valve 401 is closed at the same time. When the main shaft sealing water supply system receives the withdrawal order, the electric valves on the water supply pipeline of the high-level pool are all closed.

In the dry season, the technical water supply pipeline 300 is selected for water supply. When the spindle sealed water supply system receives the input order, the electric valve 2 is opened, the sixth electric valve 401 is opened, and the water flows through the purification module 100, the first water filter 403, the electromagnetic flowmeter 601, the pressure The sensor 602 reaches the seal of the main shaft. When the flow rate and pressure are less than the set value, the booster pump 503 will be opened after a delay, and the booster pump 503 will be linked with the fifth electric valve 502 to open to ensure the water supply pressure and flow; 403 When the differential pressure is high, open the seventh electric valve 402 and close the sixth electric valve 401 at the same time. When the main shaft sealing water supply system receives the withdrawal order, the electric valves on the technical water supply pipeline are all closed. Among them, the main shaft sealing water supply system adopts the existing technology, such as PLC and so on.

Further, the purification module 100 includes a pipeline assembly 101, a separation assembly 102 arranged on both sides of the pipeline assembly 101, a purification assembly 103 arranged in the pipeline assembly 101 and one end protruding from the pipeline assembly 101, and The support frame 104 to which the pipe assembly 101 is connected.

Further, the pipeline assembly 101 includes a buffer pipeline 101a, an impact pipeline 101b communicating with the buffer pipeline 101a, a first restriction ring 101c disposed at the inlet end of the impact pipe 101b, and a first restriction ring 101c disposed inside the first restriction ring 101c. The second confinement ring 101d, the deposition chamber 101e arranged between the first confinement ring 101c and the second confinement ring 101d, the impingement chamber arranged between the second confinement ring 101d and the end of the impingement pipe 101b 101f, the first screening port 101g symmetrically arranged on both sides of the deposition chamber 101e, and the second screening port 101h symmetrically arranged on both sides of the impact chamber 101f; the first confining ring 101c and the second confining ring 101d has the same structure.

Further, the first restricting ring 101c includes a blocking surface 101c-1 on one side, an arc-shaped folding surface 101c-2 communicating with the blocking surface 101c-1, and an extended Surface 101c-3.

Further, the separation assembly 102 includes two sets of communication cavities 102a symmetrically arranged on both sides of the pipeline assembly 101, and a manifold 102b connected to the communication cavities 102a; the communication cavities 102a pass through the The first screening port 101g and the second screening port 101h communicate with the pipeline assembly 101 .

Further, the purification assembly 103 includes a distance limiting frame 103a arranged on one side of the pipeline assembly 101, a moving shaft 103b movably connected with the distance limiting frame 103a, and a sealing block 103c arranged on the moving shaft 103b , the V-shaped elastic sheet 103d arranged on one side of the sealing block 103c, the horizontal sheets 103e respectively arranged at both ends of the V-shaped elastic sheet 103d, the two groups of plug-in terminals 103f arranged symmetrically on the horizontal sheet 103e, and the The rotating sleeve 103g outside the moving shaft 103b, the multiple sets of sockets 103h arranged around the middle of the rotating sleeve 103g, the multiple sets of impact power blades 103i obliquely arranged at one end of the rotating sleeve 103g, The collar 103j at the other end of the rotating sleeve 103g, the small spiral deflector 103k arranged in the rotating sleeve 103g and connected to the moving shaft 103b, communicates with the small spiral deflector 103k and The large spiral deflector 103l arranged on the outside of the rotating sleeve 103g, and the conical elastic screening piece 103m connected to the end of the moving shaft 103b; 1. The collar limiting block 101b-1 is provided with a limiting groove which is movably connected with the collar 103j. When the work efficiency needs to be improved, the motor can be connected with the moving shaft 103b to enhance the power.

Preferably, the moving shaft 103b can rotate relative to the distance limiting frame 103a through the bearing, and the staff adjusts the working state of the position adjustment device of the moving shaft 103b relative to the distance limiting frame 103a, and the distance limiting frame 103a acts as a limit position. Fixed role. The sealing block 103c is used to seal the pipeline assembly 101, and the large spiral deflector 103l improves the stirring and flow guiding ability, so that the muddy water in the cleaning process enters the small spiral deflector 103k through the large spiral deflector 103l, and the small spiral deflector The diameter of the flow sheet 103k is smaller than that of the rotating sleeve 103g, and the muddy water will be discharged through the water outlet at the bottom end of the impact pipe 101b due to the sealing block 103c under the action of flow diversion.

Further, the conical elastic screening sheet 103m includes a conical elastic sheet 103m-1, a third screening port 103m-2 arranged on the conical elastic sheet 103m-1, an array arranged on the conical elastic sheet Multiple sets of impact extension grooves 103m-3 in the middle of 103m-1, and multiple sets of auxiliary blades 103m-4 arrayed at the bottom of the tapered elastic piece 103m-1.

Preferably, the impact extension groove 103m-3 is set to deform the conical elastic piece 103m-1 under the impact of the water flow and extend to the extension surface 101c-3 of the restricting ring, so that the bottom of the conical elastic piece 103m-1 and the extension surface 101c -3 The fit is tighter, which improves the stability of the device and makes the auxiliary shovel 103m-4 periodically scrape the contact dead angle between the impact pipe 101b and the second restricting ring 101d to prevent sediment from accumulating. The contact area between the tapered elastic piece 103m-1 and the extension surface 101c-3 can be increased by the auxiliary shovel 103m-4, so as to prevent the device from retracting under the impact of the water flow and ensure the operation of the device.

Further, the auxiliary blade 103m-4 is provided with an inclined surface 103m-41. The first screening port 101g, the second screening port 101h and the third screening port 103m-2 have the same diameter and are all used to separate water and coarse sand.

It should be noted that both the conical elastic piece 103m-1 and the V-shaped elastic piece 103d are made of elastic material, and the rotating sleeve 103g rotates after being impacted by the water flow through multiple groups of inclined impact power fan pieces 103i, and the impact power fan pieces 103i Existing technology can be adopted, such as spiral power fan blades and the like. The horizontal pieces 103e at both ends of the V-shaped elastic piece 103d are used to limit the insertion direction of the insertion terminal 103f so that it can cooperate with the insertion interface 103h. In the initial state, the top of the plug-in terminal 103f contacts the inner wall of the rotating sleeve 103g and is squeezed, and has a tendency to pop out under the action of the V-shaped elastic piece 103d.

Further, the tapered elastic screening sheet 103m is arranged in the deposition chamber 101e. The insertion end 103f has the same diameter as the insertion port 103h, and the top of the insertion end 103f is in contact with the wall of the rotating sleeve 103g.

In use, it is divided into two processes: purification process and cleaning process.

Purification process: referring to FIG. 4 , it is defined that the position of each component of the purification assembly 103 at this time is the initial state. During this process, when the water flow enters the impact pipe 101b through the buffer pipe 101a, the water flow will be screened by the conical elastic screening sheet 103m to prevent sediment from accumulating in the impact chamber 101f and damage the device. The screened water flow enters the impact chamber 101f and rotates the rotating sleeve 103g through the impact power fan 103i, agitates and centrifuges the water flow in the sedimentation chamber 101e, and the coarse sediment particles in the sedimentation chamber 101e flow toward the pipe wall under the action of centrifugal force. direction, and finally trapped in the deposition chamber 101e by the blocking surfaces 101c-1 of the first confinement ring 101c and the second confinement ring 101d. The water flowing into the deposition chamber 101e and the impact chamber 101f will enter the communication chamber 102a through the first screening port 101g and the second screening port 101h under the action of the rotation of the rotating sleeve 103g, and finally enter the manifold 102b to be discharged.

Cleaning process: Push the moving shaft 103b to make it enter the impact pipe 101b. After the sealing block 103c enters the impact pipe 101b, it will unseal the impact pipe 101b and open the water outlet. And the plug-in terminal 103f cooperates with the plug-in port 103h, so that the staff can make the device reach the precise position without disassembling the impact pipe 101b. When advancing the moving shaft 103b to move, the tapered elastic screening sheet 103m at the end of the moving shaft 103b will move in the deposition chamber 101e, and the auxiliary shovel blade 103m-4 on the tapered elastic screening sheet 103m will be attached to the deposition chamber 101e tube The dead angle of the wall and cannot be impacted by the impacting water flow is scraped to improve the cleaning ability, and the sediment remains in the deposition chamber 101e through the gap between each group of auxiliary blades 103m-4. When the conical elastic screening piece 103m is in contact with the first confining ring 101c, the staff will feel resistance and continue to push the conical elastic screening piece 103m, and the conical elastic screening piece 103m will contact and cooperate with the arc-shaped folding surface 101c-2 to produce a certain deformation And through the first restricting ring 101c, the staff pull back to make the conical elastic screening piece 103m contact with the extension surface 101c-3 of the first restricting ring 101c, complete the positioning of the position and end the adjustment of the position; the adjusted tapered elastic screening The piece 103m communicates the deposition chamber 101e with the impact chamber 101f for easy cleaning, and when the rotating sleeve 103g rotates, the auxiliary shovel 103m-4 cleans the contact part of the first confinement ring 101c and the impact pipe 101b. The adjusted position of the V-shaped elastic sheet 103d is at the insertion port 103h. Even if the insertion end 103f is not matched with the insertion port 103h at the first time, when the rotating sleeve 103g is impacted by the water flow and rotates again, the insertion end 103f will It will pop out when it coincides with the insertion port 103h, so that the moving shaft 103b is connected and fixed with the rotating sleeve 103g and rotates with it. The large spiral deflector 103l will rotate in the deposition chamber 101e and transport the sediment to the small spiral deflector 103k and enter the rotating sleeve 103g, and finally be discharged through the water outlet.

In summary, the present invention can be used in the sealed water supply system of the main shaft of a hydropower station to provide two water sources as water sources in the wet and dry seasons, and the designed pipeline booster pump can be used for emergency when the flow pressure is low under the normal water supply mode, and can also be used for a long time. The time operation provides a guarantee for the main shaft seal of the unit to prevent burning of tiles; the design of the purification module is used to separate and remove heavy coarse particles of mud and sand in the sewage, preventing particles in the main shaft sealing water from causing wear to the main shaft and bearing bushes, and can also improve water quality. , prolong the life of the water filter, and prevent the low pressure and flow rate of the main shaft seal water caused by the clogging of the water filter.

It is important to note that the construction and arrangement of the application, shown in the various exemplary embodiments, are illustrative only. Although only a few embodiments have been described in detail in this disclosure, those who review this disclosure will readily appreciate that many modifications are possible without materially departing from the novel teachings and advantages of the subject matter described in this application. are possible (e.g., variations in dimensions, dimensions, structures, shapes and proportions of various elements, as well as parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.). For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be inverted or otherwise varied, and the nature or number or positions of discrete elements may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operation and arrangement of the exemplary embodiments without departing from the scope of the invention. Accordingly, the invention is not limited to a particular embodiment, but extends to various modifications still falling within the scope of the appended claims.

Furthermore, in order to provide a concise description of exemplary embodiments, not all features of an actual embodiment (i.e., those features not relevant to the best mode presently considered for carrying out the invention, or to practicing the invention) may not be described. feature).

It should be appreciated that during the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort would be complex and time-consuming, but would be a routine matter of design, fabrication, and production without undue experimentation to those of ordinary skill having the benefit of this disclosure .

It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation, although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims

A main shaft sealing control system of a hydropower station, characterized in that it includes,

The control system (M) includes a purification module (100), a high-level pool (200) and a technical water supply pipeline (300) respectively connected to the purification module (100), and a water filter assembly connected to the purification module (100) (400).
The sealing control system for the main shaft of a hydropower station according to claim 1, characterized in that: a first electric valve (201) is arranged between the high-level pool (200) and the purification module (100), and the technical water supply pipeline ( 300) and the purification module (100) are provided with a second electric valve (301).
The main shaft sealing control system of a hydropower station according to claim 2, characterized in that: a fourth electric valve (501) and a fifth electric valve ( 502), and a booster pump (503) connected to the fourth electric valve (501) and the fifth electric valve (502); the side of the purification module (100) is provided with a third electric valve (504 ).
The main shaft sealing control system of a hydropower station according to claim 3, characterized in that: the water filtering assembly (400) includes a sixth electric valve (401) and a seventh electric valve ( 402), the first water filter (403) connected with the sixth electric valve (401), the first drain valve (404) connected with the first water filter (403), and the seventh A second water filter (405) connected to the electric valve (402), and a second drain valve (406) connected to the second water filter (405).
The main shaft seal control system of a hydropower station according to claim 4, further comprising a measurement assembly (600), which includes an electromagnetic flowmeter (601) connected to the water filter assembly (400) and a pressure transmitter ( 602).
The sealing control system for the main shaft of a hydropower station according to any one of claims 1 to 5, characterized in that: the purification module (100) includes a pipeline assembly (101), and separation assemblies ( 102), a purification component (103) arranged in the pipeline component (101) and one end protruding from the pipeline component (101), and a support frame (104) connected with the pipeline component (101).
The main shaft seal control system of a hydropower station according to claim 6, characterized in that: the pipeline assembly (101) includes a buffer pipeline (101a), an impact pipeline (101b) communicated with the buffer pipeline (101a), arranged in the The first restriction ring (101c) at the inlet end of the impact pipe (101b), the second restriction ring (101d) arranged inside the first restriction ring (101c), the first restriction ring (101c) and the The deposition chamber (101e) between the second restriction ring (101d), the impact chamber (101f) arranged at the end of the second restriction ring (101d) and the impact pipe (101b), symmetrically arranged at the deposition The first screening port (101g) on both sides of the chamber (101e), and the second screening port (101h) symmetrically arranged on both sides of the impact chamber (101f); the first restricting ring (101c) and the second The restriction rings (101d) have the same structure; the first restriction ring (101c) includes a blocking surface (101c-1) arranged on one side thereof, and an arc-shaped folding surface (101c) communicating with the blocking surface (101c-1) -2), and an extended surface (101c-3) disposed on the other side thereof.
The main shaft seal control system of a hydropower station according to claim 7, characterized in that: the separation assembly (102) includes two groups of communicating cavities (102a) symmetrically arranged on both sides of the pipeline assembly (101), and connected to the A manifold (102b) connected to the communication cavity (102a); the communication cavity (102a) is connected to the pipeline assembly (101) through the first screening port (101g) and the second screening port (101h) ) connected.
The main shaft seal control system of hydropower station according to claim 8, characterized in that: the purification assembly (103) includes a distance limiting frame (103a) arranged on one side of the pipeline assembly (101), which is connected to the distance limiting The moving shaft (103b) movably connected to the position frame (103a), the sealing block (103c) arranged on the moving shaft (103b), the V-shaped elastic sheet (103d) arranged on one side of the sealing block (103c) , the horizontal piece (103e) respectively arranged at both ends of the V-shaped elastic piece (103d), the two sets of plug-in terminals (103f) symmetrically arranged on the horizontal piece (103e), and the moving shaft (103b) The outer rotating sleeve (103g), multiple sets of sockets (103h) surrounding the middle of the rotating sleeve (103g), multiple sets of impact power blades ( 103i), a collar (103j) arranged at the other end of the rotating sleeve (103g), a small spiral deflector arranged in the rotating sleeve (103g) and connected to the moving shaft (103b) ( 103k), a large spiral guide vane (103l) communicating with the small spiral guide vane (103k) and arranged outside the rotating sleeve (103g), and a cone connected to the end of the moving shaft (103b) shaped elastic screening piece (103m); the bottom end of the impact pipe (101b) is provided with a collar stopper (101b-1), and the collar stopper (101b-1) is provided with a (103j) the limiting groove of flexible connection.
The sealing control system for the main shaft of a hydropower station according to claim 9, characterized in that: the conical elastic screening sheet (103m) comprises a conical elastic sheet (103m-1), which is arranged on the conical elastic sheet (103m-1 ) on the third screening port (103m-2), arrays set in the middle of the tapered elastic sheet (103m-1) multiple sets of impact extension grooves (103m-3), and arrays arranged in the tapered elastic sheet (103m-1) multiple sets of auxiliary blades (103m-4) at the bottom; the auxiliary blades (103m-4) are provided with inclined surfaces (103m-41).