CN114876696B - Optimizing device and method for prolonging service life of top cover water intake pipe - Google Patents
Optimizing device and method for prolonging service life of top cover water intake pipe Download PDFInfo
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- CN114876696B CN114876696B CN202210387324.XA CN202210387324A CN114876696B CN 114876696 B CN114876696 B CN 114876696B CN 202210387324 A CN202210387324 A CN 202210387324A CN 114876696 B CN114876696 B CN 114876696B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 118
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000007704 transition Effects 0.000 claims abstract description 45
- 238000009825 accumulation Methods 0.000 claims abstract description 29
- 239000012530 fluid Substances 0.000 claims abstract description 26
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 238000005457 optimization Methods 0.000 claims description 10
- 239000000523 sample Substances 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 12
- 230000009467 reduction Effects 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/008—Measuring or testing arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/02—Casings
- F03B11/025—Covers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Turbines (AREA)
Abstract
The invention discloses an optimizing device and a method for prolonging the service life of a top cover water intake pipe, and relates to the technical field of water turbine fluid distribution, wherein the device comprises a transition barrel, a sealing cover and a fluid speed reducing mechanism, the transition barrel is provided with a water accumulation cavity, a first port and a second port which are communicated with the water accumulation cavity, the first port is opposite to the second port, the first port is used for being connected with the top cover, the first port covers a top cover water intake, and the cross section of the water accumulation cavity is larger than the radial cross section of the top cover water intake pipe; the sealing cover is covered and fixed on the second port and is used for being connected with the top cover water intake pipe; the fluid speed reducing mechanism is arranged in the water accumulation cavity and used for guiding fluid to offset and reducing local flow velocity. This application is through distributing the fluid that flows from the top cap intake for impact force greatly reduced that acts on the top cap intake, thereby have the effect of extension top cap intake life.
Description
Technical Field
The application relates to the technical field of hydraulic turbine fluid distribution, in particular to an optimization device and method for prolonging service life of a top cover water intake pipe.
Background
As shown in fig. 1, the top cover 10 of the water turbine has a top cover water intake pipe 30 for taking water from the top cover water intake 20, wherein a rectangular dotted frame is a water taking area.
According to the actual operation verification comparison test of the water turbine, in the long-term operation of the hydropower station with a sediment-laden basin, the erosion damage rate of the overflow component of the water turbine, such as the inlet position of the top cover water intake pipe 30, is faster compared with other overflow components due to the narrow caliber and abrupt change of the fluid direction, so the application provides a new technical scheme.
Disclosure of Invention
In order to prolong the service life of the top cover water intake pipe, the application provides an optimization device and an optimization method for prolonging the service life of the top cover water intake pipe.
In a first aspect, the present application provides an optimizing apparatus for prolonging service life of a top cover water intake pipe, which adopts the following technical scheme:
an optimizing device for prolonging service life of a top cover water intake pipe, comprising:
the transition cylinder is provided with a water accumulation cavity, a first port and a second port which are communicated with the water accumulation cavity, the first port is opposite to the second port, the first port is used for being connected with the top cover, the first port covers the water intake of the top cover, and the cross section of the water accumulation cavity is larger than the radial cross section of the water intake pipe of the top cover;
the sealing cover is fixedly covered on the second port and is used for being connected with the top cover water intake pipe;
the fluid speed reducing mechanism is arranged in the water accumulation cavity and is used for guiding fluid to offset and reducing local flow velocity.
Optionally, the first port is mounted offset with respect to the top cover intake.
Optionally, the fluid speed reducing mechanism comprises a flow dividing plate, the flow dividing plate is parallel to the cylinder axis of the transition cylinder, and the thickness of the flow dividing plate is smaller than the inner diameter of the top cover water taking pipe; the two sides of the flow distribution plate are provided with flow guide bulges, the flow guide bulges are close to the top cover water intake pipe, the flow distribution plate is provided with a center surface parallel to the plate surface, and the surface of the flow guide bulges, deviating from the center surface, is an outwards convex cambered surface.
Optionally, a plurality of impact flow channels are formed in the flow dividing plate, the impact flow channels comprise a first flow channel and a second flow channel which are communicated, an external port of the first flow channel is opposite to the first port, the first flow channel extends along the axial direction of the cylinder, the second flow channel is arranged at an angle with the first flow channel, and the external port of the second flow channel is arranged on the surface of the flow guiding protrusion, which is away from the central surface; the caliber of the external port of the second flow channel is larger than that of the external port of the first flow channel.
Optionally, the external ports of the second flow channels of any two adjacent impact flow channels are respectively located at two sides of the flow dividing plate along a set direction, wherein the set direction is a direction parallel to the radial direction and the central plane of the transition cylinder.
Optionally, the fluid speed reducing mechanism further includes lateral wall plates respectively disposed on two sides of the flow dividing plate, one outer wall of the lateral wall plate is attached to the inner wall of the transition cylinder, and the other outer wall of the lateral wall plate is attached to the inner wall of the sealing cover; and a diversion slope is formed on one side of the lateral wall plate facing the flow distribution plate, and the diversion slope is a concave cambered surface.
Optionally, a plurality of connecting rods are inserted into one side of the lateral wall plate facing the flow dividing plate, and the other ends of the connecting rods are inserted into the flow dividing plate or the flow guiding protrusions; the splitter plate is suspended from the top cover.
Optionally, the alarm detection assembly comprises a plug and two conductive probes penetrating through the plug;
the sealing cover, the lateral wall plate and the connecting rod are provided with mutually communicated through holes, and the inner wall of each through hole is provided with an insulating layer;
the plug is inserted into the through hole of the sealing cover, and the conductive probe sequentially penetrates through the sealing cover and the lateral wall plate and stretches into the connecting rod.
Optionally, any one or more surfaces of the transition cylinder, the sealing cover and the fluid speed reducing mechanism facing the fluid are wear-resistant surfaces.
In a second aspect, the application provides an optimization method for prolonging the service life of a top cover water intake pipe, which adopts the following technical scheme:
an optimization method for prolonging the service life of a top cover water intake pipe comprises the step of installing the optimization device for prolonging the service life of the top cover water intake pipe between a top cover water intake and the top cover water intake pipe.
In summary, the present application includes at least one of the following beneficial technical effects: a water accumulation cavity is formed between an inlet of the top cover water intake pipe and a top cover water outlet and is used for reducing the fluid flow rate at a local position; meanwhile, the flow distribution plate and the lateral wall plate are matched with each other in the water accumulation cavity, so that the fluid entering the water accumulation cavity is divided into two paths, the two paths of fluid are separated firstly, and then the flow distribution plate is opposite to the flow distribution plate through the guide protrusions on the flow distribution plate and the guide slopes on the lateral wall plate, so that the flow velocity is locally reduced in the area close to the inlet of the top cover water intake pipe, the abrasion to the top cover water intake pipe is effectively reduced, and the service life of the top cover water intake pipe is prolonged.
Drawings
FIG. 1 is a partial structural cross-sectional view of a prior art water turbine;
FIG. 2 is a schematic overall structure of the present application;
FIG. 3 is a schematic view of the installation effect of the present application;
FIG. 4 is a schematic view of the structure of the present application taken along line A-A of FIG. 3;
fig. 5 is a schematic structural view of the impingement flow channel of the present application.
Reference numerals illustrate: 10-top cover; 20-top cover water intake; 30-a top cover water intake pipe; 40-optimizing means; 1. a transition cylinder; 11-water accumulation cavity; 2. a cover; 3. a diverter plate; 31. a flow guiding protrusion; 32a, a first flow passage; 32b, a second flow channel; 33-a central plane; 4. a lateral wall plate; 5. a connecting rod; 61. a plug; 62. and (5) conducting probes.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-5.
The embodiment of the application discloses an optimization device for prolonging service life of a top cover water intake pipe.
Referring to fig. 2, an optimizing apparatus for prolonging the service life of a top cover water intake pipe comprises a transition cylinder 1, a sealing cover 2 and a fluid speed reducing mechanism.
The transition cylinder 1 is in a tubular structure and is provided with a water accumulation cavity 11, a first port and a second port which are communicated with the water accumulation cavity 11, wherein the first port is opposite to the second port and is used for being connected with the top cover 10, the first port covers the top cover water intake 20, and the cross section of the water accumulation cavity 11 is larger than the radial cross section of the top cover water intake pipe 30; the second port is everted to form a flange-like structure. In the embodiment, the transition cylinder 1 is pressed into a flat ellipse shape and is bent towards one side with a small radian so as to better adapt to the position installation of the top cover 10 of the water turbine; as shown in fig. 3, which is an installation effect diagram, the transition cylinder 1 is provided in a flat oval shape, so that the optimizing apparatus 40 of the present embodiment can be smoothly installed between the top cover 10 and the top cover water intake pipe 30.
Referring to fig. 2, the closure 2 is adapted to the end of the transition barrel 1 provided with a flange-like structure, namely: the closure 2 is adapted to the second port of the transition barrel 1, both of which are secured to each other by means of bolts. The sealing cover 2 is provided with a through hole with a through structure, and is communicated with the top cover water intake pipe 30 through a flange structure at the upper part so as to realize the communication with the water accumulation cavity 11 of the transition cylinder body 1.
When in use, one end (the first port of the transition barrel 1) of the transition barrel 1, which is away from the sealing cover 2, is fixed on the top cover 10 of the water turbine, and at the moment, the top cover water intake 20 is covered by the transition barrel 1. It can be understood that the connection mode of the transition cylinder 1 and the top cover 10 is determined according to the design and use requirements, and may be welding, bolting, etc., and the boundary line position may be provided with a sealing ring, etc. to perform sealing treatment.
According to the above, the cross section area of the inner cavity of the transition barrel 1 is necessarily larger than the cross sections of the top cover water intake pipe 30 and the top cover water intake 20, and at this time, the water accumulation cavity 11 of the transition barrel 1 can reduce the flow velocity at a local position, so as to reduce the abrasion of the top cover water intake pipe 30; principle of: a flow calculation formula; the water of the small pipe enters a larger cavity, the flow is unchanged, the cross section is increased, and the flow rate is reduced.
For optimizing the effect, the inner wall of the water accumulation cavity 11 can be coated with a wear-resistant coating, or the material of the transition cylinder 1 can be directly selected as a wear-resistant material.
Further, the first port of the transition barrel 1 is also configured to be installed offset with respect to the top cover intake 20, that is: both are eccentric, such as: the top cover water intake 20 is close to one side of the transition cylinder 1; the arrangement aims at forming small vortex in larger surplus space beside the top cover water intake 20 when the water flow passes through the water accumulation cavity 11 rapidly, so as to optimize the quick-acting effect of the water accumulation cavity 11 in the flow reduction.
Referring to fig. 4, for the present application, the flow rate reduction at the local position is also achieved by the above-mentioned fluid velocity reduction mechanism, which includes a flow dividing plate 3 mounted in the middle of the water accumulation chamber 11, the flow dividing plate 3 being parallel to the cylinder axis of the transition cylinder 1, the flow dividing plate 3 having a center plane 33 parallel to the plate surface thereof, the center plane 33 being substantially coplanar with the major axis of the ellipse of the transition cylinder 1, the thickness direction of the flow dividing plate 3 being substantially parallel to the minor axis of the ellipse of the transition cylinder 1, that is, the height direction, the length direction, and the thickness direction of the flow dividing plate 3 are all parallel to the height direction, the length direction, and the thickness direction of the transition cylinder 1; the thickness of the flow dividing plate 3 is smaller than the inner diameter of the top cover water intake pipe 30.
In fig. 4, the direction indicated by arrow ab is the thickness direction of the flow dividing plate 3, that is: the elliptical short axis direction of the transition cylinder 1; the direction indicated by arrow cd is the height direction of the flow dividing plate 3, that is: the direction of the cylinder axis of the transition cylinder 1 is parallel to the central surface 33 of the splitter plate 3; the direction indicated by arrow ef is the length direction of the splitter plate, namely: the elliptical major axis direction of the transition cylinder 1 is also the set direction hereinafter.
The two sides of the flow dividing plate 3 are provided with flow guiding bulges 31, the flow guiding bulges 31 are close to the top cover water intake pipe 30, and the surface of the flow guiding bulges 31, which is away from the central surface 33, is an outwards convex cambered surface.
At this time, the water flow in the water accumulation cavity 11 is divided into a left side flow and a right side flow by the flow dividing plate 3, and the water flows are gradually separated from each other in the water accumulation cavity 11, and after passing through the side of the flow dividing plate 3, the water flows are folded in opposite directions to form opposite flushing, so that the effect of reducing the local flow velocity in the inlet area of the top cover water intake pipe 30 is realized. The arrangement uses the fluid kinetic energy to cancel each other out, and the loss is lower than that of an obstacle.
Referring to fig. 4, the fluid velocity reduction mechanism further includes lateral wall plates 4 provided on both sides of the flow dividing plate 3, respectively; one outer wall of the lateral wall plate 4 is attached to the inner wall of the transition cylinder, and the other outer wall is attached to the inner wall of the sealing cover; a plurality of connecting rods 5 are inserted into one side of the lateral wall plate 4 facing the flow dividing plate 3, and the other ends of the connecting rods 5 are inserted into the flow dividing plate 3 or the flow guiding protrusions 31, so that the flow dividing plate 3 is selected in the embodiment. This arrangement allows the diverter plate 3 to be suspended from the top cover 10, thereby providing a more pronounced water flow rate reduction effect to the water accumulation chamber 11.
According to the above, the lateral wall plate 4 can be supported by the connecting rod 5 to be abutted against the inner wall of the transition cylinder 1, thereby fixing the splitter plate 3. The connecting rod 5 is a cylinder, so that the arc surface can be utilized to face the water flow, and the impact is reduced; and because the connecting rods 5 are multiple, the problem that the splitter plate 3 rotates around one connecting rod does not exist; the number of connecting rods 5 may be 4 or 6, but is not excessive and is preferably supported by wear-resistant material.
For the lateral wall plate 4, the height of the lateral wall plate is the same as the height of the inner cavity of the transition barrel 1, and a diversion slope is formed on one side facing the flow dividing plate 3 and is an inward concave cambered surface.
Through setting up the water conservancy diversion slope, can be used for guiding the water after the reposition of redundant personnel, produce stronger hedging effect when making two rivers foldingly each other to optimize the aforesaid effect that local position slowed down.
It should be noted that, in the present application, the side wall plate 4, the flow dividing plate 3 and the connecting rod 5 may be all available as loss members, and one of the functions of the present invention is to protect the inner wall of the transition cylinder 1, and the like, and the transition cylinder 1 is continuously utilized after the transition cylinder is damaged. Since the upper cover 2 of the transition cylinder 1 is bolted, there is no impediment to replacement of the internal structure.
In this embodiment, the end of the diverter plate 3 facing the top cover water intake 20 is chamfered to form an arc end, and this arrangement can reduce the abrasion of the diverter plate 3 caused by the water flow impact; next, a plurality of impact flow passages are formed in the flow dividing plate 3.
Referring to fig. 5, the impingement flow path includes a first flow path 32a and a second flow path 32b in communication, wherein the first flow path 32a extends along the height of the flow dividing plate 3, and the two flow paths form a "7" shape.
Specifically, the external port of the first flow channel 32a is opposite to the first port of the transition barrel 1, the first flow channel 32a extends along the barrel axis direction, the second flow channel 32b is arranged at an angle with the first flow channel 32a, and the external port of the second flow channel 32b is arranged on the surface of the guide protrusion 31, which is away from the central surface 33; the aperture of the outer port of the second flow path 32b is larger than the aperture of the outer port of the first flow path 32 a.
When in use, water flows along the side wall of the flow dividing plate 3 to the inlet of the top cover water intake pipe 30, at this time, part of water enters from the opposite external port of the second flow channel 32b, and enters the first flow channel 32a by impact, and then is flushed out from the external port (lower end of the flow dividing plate 3) of the first flow channel 32a, namely: is punched out from the arc-shaped end of the flow distribution plate 3 to offset and disturb the water flow impacting the arc-shaped end of the flow distribution plate 3 in a small range, so that the flow speed is reduced on one hand, and the abrasion rate of the flow distribution plate 3 is reduced on the other hand.
Because the aperture of the external port of the second flow channel 32b is larger than that of the external port of the first flow channel 32a, the flow direction of the backflushing water flow can be ensured, and the effect is ensured.
In this embodiment, the external ports of the second flow channels 32b of any two adjacent impact flow channels are respectively located at two sides of the flow dividing plate 3 along a set direction, wherein the set direction is a direction parallel to the radial direction and the central plane 33 of the transition cylinder 1 at the same time, that is: the setting direction is the direction indicated by arrow ef in fig. 4. Through this setting, can balance the atress of flow distribution plate 3, increase structural strength.
The application is also provided with a plurality of alarm detection components for detecting whether the stability and the position of the splitter plate 3 are abnormal or not; the alarm detection component comprises: a plug 61 and two conductive probes 62 penetrating the plug 61.
Through holes which are communicated with each other are formed in the sealing cover 2, the lateral wall plate 4 and the connecting rod 5, and an insulating layer is coated on the inner wall of each through hole. The number of sets of through holes, referred to above as a set of through holes, may be the same as the number of connecting rods.
Plug 61 is inserted into the corresponding through hole of cover 2; the conductive probes 62 pass through the cover 2, the lateral wall plate 4 in turn, and extend into the connecting rod 5. The plug 61 may be an external thread structure, and is screwed and fixed to the cover 2.
It will be appreciated that the above-described fixed components are sealed in the interconnected locations.
In use, the two conductive probes 62 inserted in each plug 61 are connected to the positive and negative terminals of the alarm lamp by wires, respectively, and are connected in series with the battery pack. When the connection between the splitter plate 3 and the connecting rod 5 is unstable or the connecting rod 5 is separated from the lateral wall plate 4 under the impact of water flow, the water flow enters the through hole, so that the two conductive probes 62 in the plug 61 are mutually communicated, namely, the alarm lamp is turned on, and the alarm is realized.
According to the above, the user can understand the installation state of the flow dividing plate 3 without opening the water accumulation chamber 11 to prevent abnormality thereof from affecting the use effect.
It will be appreciated that the diverter plate 3, the side wall plate 4 and the connecting rod 5 may be welded and fixed.
The embodiment of the application also discloses an optimization method for prolonging the service life of the top cover water intake pipe.
The optimization method for prolonging the service life of the top cover water intake pipe comprises the following steps: an optimizing device for prolonging the service life of the top cover water intake pipe is arranged between the top cover water intake 20 and the top cover water intake pipe 30.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. An optimizing device for prolonging service life of a top cover water intake pipe, which is characterized by comprising:
the transition barrel (1) is provided with a water accumulation cavity (11), and a first port and a second port which are communicated with the water accumulation cavity (11), wherein the first port is opposite to the second port and is used for being connected with a top cover (10), the first port covers a top cover water intake (20), and the cross section of the water accumulation cavity (11) is larger than the radial cross section of a top cover water intake pipe (30);
the sealing cover (2) is fixedly covered on the second port, and the sealing cover (2) is used for being connected with the top cover water intake pipe (30);
the fluid speed reducing mechanism is arranged in the water accumulation cavity (11) and is used for guiding fluid to offset and reducing local flow velocity;
the fluid speed reducing mechanism comprises a flow dividing plate (3), the flow dividing plate (3) is parallel to the cylinder axis of the transition cylinder (1), and the thickness of the flow dividing plate (3) is smaller than the inner diameter of the top cover water intake pipe (30); the two sides of the flow distribution plate (3) are provided with flow guide bulges (31), the flow guide bulges (31) are close to the top cover water intake pipe (30), the flow distribution plate (3) is provided with a central surface (33) parallel to the plate surface, and the surface of the flow guide bulges (31) deviating from the central surface (33) is an outwards convex cambered surface;
a plurality of impact flow channels are formed in the flow distribution plate (3), each impact flow channel comprises a first flow channel (32 a) and a second flow channel (32 b) which are communicated, an external port of each first flow channel (32 a) is opposite to each first port, each first flow channel (32 a) extends along the axial direction of the cylinder, each second flow channel (32 b) is arranged at an angle with each first flow channel (32 a), and an external port of each second flow channel (32 b) is arranged on the surface, deviating from the central surface (33), of each flow guide protrusion (31); the caliber of the external port of the second flow passage (32 b) is larger than that of the external port of the first flow passage (32 a).
2. The optimizing apparatus for extending the life of a header intake pipe of claim 1, wherein: the first port is mounted offset relative to the top cover intake (20).
3. The optimizing apparatus for extending the life of a header intake pipe of claim 1, wherein: the external ports of the second flow channels (32 b) of any two adjacent impact flow channels are respectively positioned at two sides of the flow dividing plate (3) along a set direction, wherein the set direction is a direction parallel to the radial direction of the transition cylinder (1) and the central surface (33) at the same time.
4. The optimizing apparatus for extending the life of a header intake pipe of claim 1, wherein: the fluid speed reducing mechanism further comprises lateral wall plates (4) which are respectively arranged at two sides of the flow dividing plate (3), one outer wall of the lateral wall plates (4) is attached to the inner wall of the transition barrel (1), and the other outer wall of the lateral wall plates (4) is attached to the inner wall of the sealing cover (2); the side wall plate (4) is provided with a diversion slope on one side facing the flow dividing plate (3), and the diversion slope is an inward concave cambered surface.
5. The optimizing apparatus for extending a life of a top cover water intake pipe of claim 4, wherein: a plurality of connecting rods (5) are inserted into one side of the lateral wall plate (4) facing the flow dividing plate (3), and the other ends of the connecting rods (5) are inserted into the flow dividing plate (3) or the flow guiding protrusions (31); the splitter plate (3) is arranged in a suspending way relative to the top cover (10).
6. The optimizing apparatus for extending a life of a header according to claim 5, wherein: the alarm detection assembly comprises a plug (61) and two conductive probes (62) penetrating through the plug (61);
the sealing cover (2), the lateral wall plate (4) and the connecting rod (5) are provided with mutually communicated through holes, and the inner wall of each through hole is provided with an insulating layer;
the plug (61) is inserted into the through hole of the sealing cover (2), and the conductive probe (62) sequentially penetrates through the sealing cover (2) and the lateral wall plate (4) and stretches into the connecting rod (5).
7. The optimizing apparatus for extending the life of a header intake pipe of claim 1, wherein: any one or more surfaces of the transition cylinder (1), the sealing cover (2) and the fluid speed reducing mechanism, which face the fluid, are wear-resistant surfaces.
8. An optimization method for prolonging service life of a top cover water intake pipe is characterized by comprising the following steps of: an optimizing device for prolonging the service life of the top cover water intake pipe according to any one of claims 1 to 7 is arranged between the top cover water intake (20) and the top cover water intake pipe (30).
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| CN202210387324.XA CN114876696B (en) | 2022-04-14 | 2022-04-14 | Optimizing device and method for prolonging service life of top cover water intake pipe |
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| CN2235675Y (en) * | 1994-07-16 | 1996-09-18 | 李人丰 | Cooling water automatic supplying equipment for water wheel type generator |
| JP2011094487A (en) * | 2009-10-27 | 2011-05-12 | Mitsubishi Electric Plant Engineering Corp | Fluid energy recovery device |
| CN103816801A (en) * | 2014-03-03 | 2014-05-28 | 东南大学 | Eddy-current opposite-impacting type gas mixer arranged in gas passage |
| CN210033700U (en) * | 2019-05-24 | 2020-02-07 | 重庆水轮机厂有限责任公司 | Combined top cover structure of water turbine |
| CN111254882A (en) * | 2020-03-09 | 2020-06-09 | 华北水利水电大学 | Hedging energy dissipation type debris flow diversion system |
| CN212615138U (en) * | 2020-04-20 | 2021-02-26 | 杭州力源发电设备有限公司 | Top cover drainage pressure equalizing cavity structure of water turbine |
| CN111335259A (en) * | 2020-05-06 | 2020-06-26 | 段刚强 | Movable flow dividing device for intercepting debris flow |
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