CN114876696A - Optimization device and method for prolonging service life of top cover water taking pipe - Google Patents
Optimization device and method for prolonging service life of top cover water taking pipe Download PDFInfo
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- CN114876696A CN114876696A CN202210387324.XA CN202210387324A CN114876696A CN 114876696 A CN114876696 A CN 114876696A CN 202210387324 A CN202210387324 A CN 202210387324A CN 114876696 A CN114876696 A CN 114876696A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 112
- 238000005457 optimization Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000009826 distribution Methods 0.000 claims abstract description 48
- 230000007704 transition Effects 0.000 claims abstract description 45
- 239000012530 fluid Substances 0.000 claims abstract description 26
- 238000009825 accumulation Methods 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 239000000523 sample Substances 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 8
- 230000009467 reduction Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 12
- 238000005299 abrasion Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 230000004888 barrier function 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
- 238000004891 communication Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 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
- 238000000926 separation method Methods 0.000 description 1
- 230000036262 stenosis Effects 0.000 description 1
- 208000037804 stenosis Diseases 0.000 description 1
- 238000003860 storage Methods 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
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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
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- 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 optimization device and method for prolonging the service life of a top cover water intake pipe, which relate to the technical field of water turbine fluid distribution, and the device comprises a transition cylinder, a sealing cover and a fluid deceleration mechanism, wherein 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 a 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 at the second port and is used for being connected with the top cover water taking pipe; the fluid deceleration mechanism is arranged in the water accumulation cavity and used for guiding the fluid to rush and reducing the local flow velocity. This application is through distributing the fluid that flows from the top cap intake for the impact force greatly reduced who acts on the top cap intake pipe, thereby have extension top cap intake pipe life's effect.
Description
Technical Field
The application relates to the technical field of water turbine fluid distribution, in particular to an optimization device and method for prolonging the service life of a top cover water taking pipe.
Background
As shown in fig. 1, the head cover 10 of the water turbine has a head cover water intake pipe 30 for taking water from the head cover water intake port 20, wherein a rectangular dotted frame is a water intake area.
According to the test of comparing of the actual operation verification of hydraulic turbine, at the power station of many silt basin in long-term operation, the current passing component of hydraulic turbine, like the entry position of above-mentioned top cap intake pipe 30, because of the sudden change of bore stenosis and fluid direction, compare in other current passing component abrasion damage rate faster, therefore this application provides a new technical scheme.
Disclosure of Invention
In order to prolong the service life of the top cover water taking pipe, the application provides an optimization device and method for prolonging the service life of the top cover water taking pipe.
First aspect, this application provides an extension top cap intake pipe life's optimization device, adopts following technical scheme:
an optimization device for prolonging the service life of a top cover water intake pipe comprises:
the transition cylinder body 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 taking pipe;
and the fluid speed reduction mechanism is arranged in the water accumulation cavity and is used for guiding the fluid to rush and reducing the local flow rate.
Optionally, the first port is mounted offset with respect to the roof intake.
Optionally, the fluid deceleration mechanism includes a flow distribution plate, the flow distribution plate is parallel to the cylinder axis of the transition cylinder, and the thickness of the flow distribution plate is smaller than the inner diameter of the top cover water intake pipe; the flow distribution plate is characterized in that flow guide bulges are formed on two sides of the flow distribution plate and are close to the top cover water taking pipe, the flow distribution plate is provided with a central surface parallel to the plate surface of the flow distribution plate, and the surface of the flow guide bulge, which deviates from the central surface, is an outward convex cambered surface.
Optionally, a plurality of impact runners are formed in the diversion plate, each impact runner includes a first runner and a second runner which are communicated with each other, an outward port of the first runner is opposite to the first port, the first runner extends along the axis direction of the cylinder, the second runner and the first runner are arranged at an angle, and an outward port of the second runner is arranged on a surface of the diversion protrusion, which is away from the central plane; the caliber of the external port of the second flow passage is larger than that of the external port of the first flow passage.
Optionally, along a set direction, the outward ports of the second runners of any two adjacent impact runners are respectively located at two sides of the flow distribution plate, where the set direction is a direction parallel to the radial direction of the transition cylinder and the central plane at the same time.
Optionally, the fluid deceleration mechanism further includes lateral wall plates respectively disposed at two sides of the flow distribution 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; one side of the lateral wall plate facing the flow distribution plate is provided with a flow guide slope which is an inwards concave arc surface.
Optionally, a plurality of connecting rods are inserted into one side of the lateral wall plate facing the flow distribution plate, and the other ends of the connecting rods are inserted into the flow distribution plate or the flow guide protrusion; the diverter plate is in a cantilevered arrangement relative to the top cover.
Optionally, the alarm detection device further comprises an alarm detection assembly, wherein 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 through holes which are mutually communicated, 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 extends into the connecting rod.
Optionally, any one or more of the fluid-facing surfaces of the transition cylinder, the cover, and the fluid deceleration mechanism is a wear-resistant surface.
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 the inlet of the top cover water taking pipe and the top cover water outlet and is used for reducing the flow velocity of fluid at a local position; simultaneously, mutually support with flow distribution plate, side direction wallboard in ponding chamber, divide into the fluid that gets into the ponding chamber twice for the first separation of twice fluid, the guide of the water conservancy diversion arch on the flow distribution plate, the water conservancy diversion slope on the side direction wallboard is offset each other, reduces the velocity of flow in the regional part that is close to top cap intake pipe entry, thereby effectively reduces the wearing and tearing to top cap intake pipe, improves its life.
Drawings
FIG. 1 is a partial sectional view of a prior art water turbine;
FIG. 2 is a schematic diagram of the 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 structural diagram of the present application after cutting A-A based on FIG. 3;
FIG. 5 is a schematic structural view of an impingement flow channel of the present application.
Description of reference numerals: 10-a top cover; 20-water intake of the top cover; 30-a top cover water taking pipe; 40-an optimization device; 1. a transition cylinder; 11-water accumulation cavity; 2. sealing the cover; 3. a flow distribution plate; 31. flow guide bulges; 32a, a first flow passage; 32b, a second flow channel; 33-a central plane; 4. a lateral wall panel; 5. a connecting rod; 61. a plug; 62. a conductive probe.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses extension top cap intake pipe life's optimization device.
Referring to fig. 2, the optimization device for prolonging the service life of the top cover water intake pipe comprises a transition cylinder body 1, a sealing cover 2 and a fluid deceleration mechanism.
The transition cylinder body 1 is of 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, 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 body 1 is pressed into a flat elliptic shape and is bent towards one side with a small radian so as to be better suitable for the installation of the position of the water turbine top cover 10; as shown in fig. 3, that is, as a mounting effect diagram, the optimization device 40 of the present embodiment can be smoothly mounted between the top cover 10 and the top cover water intake pipe 30 by setting the transition cylinder 1 to be flat and oval.
Referring to fig. 2, the cover 2 is adapted to the end of the transition cylinder 1 provided with the flange-like structure, namely: the cover 2 is adapted to the second port of the transition cylinder 1, and the two are fixed to each other by bolts. The seal cover 2 is provided with a through opening in a through structure, and the through opening is communicated with the top cover water taking pipe 30 through a flange structure on the upper portion so as to be communicated with the accumulated water cavity 11 of the transition cylinder body 1.
When the water turbine water inlet device is used, one end (the first port of the transition cylinder body 1) of the transition cylinder body 1, which is far away from the sealing cover 2, is fixed on a top cover 10 of the water turbine, and at the moment, a top cover water inlet 20 is covered by the transition cylinder body 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, bolt fixing, etc., and the position of the boundary line may be provided with a sealing ring, etc., so as to perform sealing treatment.
According to the above, the cross section area of the inner cavity of the transition cylinder 1 is certainly larger than the cross sections of the top cover water intake pipe 30 and the top cover water intake 20, at this time, the water accumulation cavity 11 of the transition cylinder 1 can be used for reducing the flow velocity through the local position, and the abrasion of the top cover water intake pipe 30 is reduced; the principle is as follows: a flow calculation formula; the water in the small pipe enters a larger cavity, the flow is unchanged, the cross section is increased, and the flow speed 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 body 1 can be directly selected as a wear-resistant material.
Further, the first port of the transition cylinder 1 is also arranged to be installed offset with respect to the top cover water intake 20, that is: the two are in eccentric state, such as: the top cover water intake 20 is close to one side of the transition cylinder body 1; the arrangement aims to form a small vortex in a larger surplus space beside the top cover water intake 20 when the water flow of the water accumulation cavity 11 passes through rapidly so as to optimize the effect of the water accumulation cavity 11 on reducing the flow.
Referring to fig. 4, for the present application, the flow velocity reduction at the local position is also achieved by the above-mentioned fluid decelerating mechanism, the fluid decelerating mechanism includes a flow distribution plate 3 installed in the middle of the water collecting cavity 11, the flow distribution plate 3 is parallel to the cylinder axis of the transition cylinder 1, the flow distribution plate 3 has a central plane 33 parallel to the plate surface thereof, the central plane 33 is substantially coplanar with the elliptical major axis of the transition cylinder 1, the thickness direction of the flow distribution plate 3 is substantially parallel to the elliptical minor axis of the transition cylinder 1, that is, the height direction, the length direction and the thickness direction of the flow distribution 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 distribution plate 3 is smaller than the inner diameter of the top cover water intake pipe 30.
In fig. 4, the direction indicated by the arrow ab is the thickness direction of the flow distribution plate 3, that is: the elliptical minor axis direction of the transition cylinder 1; the direction indicated by the arrow cd is the height direction of the diverter plate 3, i.e.: the direction of the cylinder axis of the transition cylinder body 1 is parallel to the central plane 33 of the splitter plate 3; the direction indicated by the arrow ef is the length direction of the splitter plate, i.e.: the direction of the long axis of the ellipse of the transition cylinder 1 is also the setting direction hereinafter.
At this moment, the water flow of the water accumulation cavity 11 is divided into a left side flow and a right side flow by the flow distribution plate 3, and the left side flow and the right side flow are gradually separated from each other in the water accumulation cavity 11, and then are oppositely folded after passing through the side of the flow distribution plate 3 to form the opposite flushing, so that the effect of reducing the local flow velocity of the inlet area of the top cover water taking pipe 30 is realized. The arrangement utilizes the kinetic energy of the fluid to offset each other, and compared with the arrangement of a certain barrier, the arrangement has lower loss.
Referring to fig. 4, the fluid deceleration mechanism further includes lateral wall plates 4 respectively disposed at both sides of the flow distribution plate 3; one outer wall of the lateral wall plate 4 is attached to the inner wall of the transition cylinder body, 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 splitter plate 3, the other ends of the connecting rods 5 are inserted into the splitter plate 3 or the flow guide protrusions 31, and the splitter plate 3 is selected in the embodiment. This setting makes flow distribution plate 3 be for top cap 10 and hang from the setting to it is more obvious to make the rivers deceleration effect to ponding chamber 11.
As described above, the lateral wall plates 4 can be spread by the connecting rods 5 and 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 cambered surface can be utilized to face water flow, and the impact is reduced; moreover, 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 not too much, and they are preferably supported by wear-resistant material.
For the lateral wall plate 4, the height of the lateral wall plate is the same as that of the inner cavity of the transition cylinder body 1, and a flow guide slope is formed on one side facing the flow distribution plate 3 and is an inwards concave arc 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 strands of rivers fold each other to optimize the effect of aforementioned local position deceleration.
It should be noted that, in the present application, the lateral wall plate 4, the splitter plate 3, and the connecting rod 5 may all be present as a loss component, and one function of the present component is to protect the inner wall of the transition cylinder 1, etc., and the transition cylinder 1 may be replaced after being damaged, while the transition cylinder 1 is continuously used. Because the upper sealing cover 2 of the transition cylinder body 1 is fixed by bolts, the internal structure is not hindered to be replaced.
In the embodiment, one end of the splitter plate 3 facing the top cover water intake 20 is chamfered to form an arc-shaped end, so that the abrasion of the splitter plate 3 caused by water flow impact can be reduced; next, a plurality of impingement flow channels are opened in the flow distribution plate 3.
Referring to fig. 5, the impingement flow channels include a first flow channel 32a and a second flow channel 32b that are in communication, wherein the first flow channel 32a extends along the height of the flow distribution plate 3, and two flow channels form a "7" shape.
Specifically, an outward port of the first flow channel 32a is opposite to the first port of the transition cylinder 1, the first flow channel 32a extends along the cylinder axis direction, the second flow channel 32b is arranged at an angle with the first flow channel 32a, and an outward port of the second flow channel 32b is arranged on a surface of the flow guide protrusion 31 departing from the central surface 33; the diameter of the outward port of the second flow passage 32b is larger than the diameter of the outward port of the first flow passage 32 a.
During the use, the water flows to top cap intake pipe 30 entry along the lateral wall of flow distribution plate 3, and at this moment, partial water gets into from the outside port of second runner 32b to receive the impact and get into first runner 32a, wash out from the outside port (the lower extreme of flow distribution plate 3) of first runner 32a again, promptly: and the water flow rushes out from the arc-shaped end of the splitter plate 3 to offset and disturb the water flow impacting the arc-shaped end of the splitter plate 3 in a small range, so that the flow speed is reduced on one hand, and the abrasion rate of the splitter plate 3 is reduced on the other hand.
Because the caliber of the outward port of the second flow passage 32b is larger than the caliber of the outward port of the first flow passage 32a, the direction of backflushing water flow can be ensured, and the above effects are ensured.
In this embodiment, along a set direction, the outward ports of the second flow channels 32b of any two adjacent impact flow channels are respectively located at two sides of the flow distribution plate 3, wherein the set direction is a direction parallel to the radial direction of the transition cylinder 1 and the central plane 33, that is: the set direction is the direction indicated by the arrow ef in fig. 4. Through this setting, can balance flow distribution plate 3's atress, increase structural strength.
The device 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 assembly includes: a plug 61 and two conductive probes 62 passing through 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 insulating layers are coated on the inner walls of the through holes. The above is referred to as a set of through holes, and the number of sets of through holes and the number of connecting rods may be the same.
The plug 61 is inserted into the corresponding through hole of the sealing cover 2; the conductive probe 62 passes through the cover 2, the lateral wall 4 in sequence, and extends into the connecting rod 5. The plug 61 may be an external thread structure, and is fixed to the cover 2 by a thread connection.
It will be appreciated that the above-described fixed components are sealed at the location of the interconnection.
When the alarm lamp is used, the two conductive probes 62 inserted into each plug 61 are respectively connected to the positive end and the negative end of the alarm lamp through leads and are connected with the storage battery in series. When the impact of rivers, the flow distribution plate 3 appears and is connected unstablely with connecting rod 5, or when connecting rod 5 breaks away from the circumstances such as side direction wallboard 4, rivers will get into the through-hole for two electrically conductive probe 62 in the cock stem 61 communicate each other, switch on the alarm lamp promptly, thereby realize reporting to the police.
According to the above, the user can know the installation state of the splitter plate 3 without opening the water collecting chamber 11, so as to prevent the abnormal condition from affecting the use effect.
It will be appreciated that the splitter plate 3, the side wall plates 4 and the connecting rod 5 may alternatively be welded and fixed.
The embodiment of the application also discloses an optimization method for prolonging the service life of the top cover water taking pipe.
The optimization method for prolonging the service life of the top cover water taking pipe comprises the following steps: between the top cover intake 20 and the top cover intake 30 is installed an optimization device that extends the service life of the top cover intake as described above.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. An optimization device for prolonging the service life of a top cover water taking pipe is characterized by comprising:
the transition cylinder body (1) is provided with a water accumulation cavity (11), a first port and a second port which are communicated with the water accumulation cavity (11), the first port is opposite to the second port, the first port 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 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 taking pipe (30);
and the fluid speed reduction mechanism is arranged in the water accumulation cavity (11), and is used for guiding the fluid to rush and reducing the local flow velocity.
2. The optimizing device for prolonging the service life of the water intake pipe of the top cover according to claim 1, wherein: the first port is mounted offset relative to the top cover intake (20).
3. The optimization device for prolonging the service life of the top cover water intake pipe according to claim 1, is characterized in that: the fluid speed reduction mechanism comprises a flow distribution plate (3), the flow distribution plate (3) is parallel to the cylinder axis of the transition cylinder body (1), and the thickness of the flow distribution plate (3) is smaller than the inner diameter of the top cover water taking pipe (30); flow guide protrusions (31) are formed on two sides of the flow distribution plate (3), the flow guide protrusions (31) are close to the top cover water taking pipe (30), the flow distribution plate (3) is provided with a central surface (33) parallel to the plate surface of the flow distribution plate, and the surface, deviating from the central surface (33), of each flow guide protrusion (31) is an outward convex arc surface.
4. The optimizing device for prolonging the service life of the water intake pipe of the top cover according to claim 3, wherein: a plurality of impact flow channels are formed in the flow distribution plate (3), each impact flow channel comprises a first flow channel (32a) and a second flow channel (32b) which are communicated with each other, an outward port of each first flow channel (32a) is opposite to the corresponding first port, the first flow channels (32a) extend along the axial direction of the cylinder, the second flow channels (32b) and the first flow channels (32a) are arranged at an angle, and outward ports of the second flow channels (32b) are arranged on the surfaces, deviating from the central plane (33), of the flow guide bulges (31); the caliber of the outward port of the second flow passage (32b) is larger than that of the outward port of the first flow passage (32 a).
5. The optimizing device for prolonging the service life of the water intake pipe of the top cover according to claim 4, wherein: along a set direction, the outward ports of the second flow channels (32b) of any two adjacent impact flow channels are respectively positioned at two sides of the flow distribution plate (3), wherein the set direction is a direction parallel to the radial direction of the transition cylinder (1) and the central plane (33) at the same time.
6. The optimizing device for prolonging the service life of the water intake pipe of the top cover according to claim 4, wherein: the fluid deceleration mechanism further comprises lateral wall plates (4) which are respectively arranged on two sides of the flow distribution plate (3), one outer wall of each lateral wall plate (4) is attached to the inner wall of the transition cylinder (1), and the other outer wall of each lateral wall plate (4) is attached to the inner wall of the seal cover (2); one side of the lateral wall plate (4) facing the splitter plate (3) is provided with a flow guide slope which is an inwards concave cambered surface.
7. The optimizing device for prolonging the service life of the water intake pipe of the top cover according to claim 6, wherein: a plurality of connecting rods (5) are inserted into one side of the lateral wall plate (4) facing the flow distribution plate (3), and the other ends of the connecting rods (5) are inserted into the flow distribution plate (3) or the flow guide bulges (31); the splitter plate (3) is arranged in a suspended manner relative to the top cover (10).
8. The optimizing device for prolonging the service life of the water intake pipe of the top cover according to claim 7, wherein: the alarm detection device also comprises an alarm detection assembly, 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 through holes which are mutually communicated, and the inner wall of each through hole is provided with an insulating layer;
the plug column (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 extends into the connecting rod (5).
9. The optimizing device for prolonging the service life of the water intake pipe of the top cover according to claim 1, wherein: any one or more surfaces facing the fluid in the transition cylinder (1), the sealing cover (2) and the fluid speed reducing mechanism are wear-resisting surfaces.
10. An optimization method for prolonging the service life of a top cover water taking pipe is characterized in that: an optimized device for extending the service life of a top cover water intake pipe as claimed in any one of claims 1 to 9 installed 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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| 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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| CN114876696B CN114876696B (en) | 2024-03-19 |
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| CN111335259A (en) * | 2020-05-06 | 2020-06-26 | 段刚强 | Movable flow dividing device for intercepting debris flow |
| 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 |
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2022
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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 |
| US20050048155A1 (en) * | 2003-08-29 | 2005-03-03 | Wentworth Mold Inc. | Mold base assembly |
| 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 |
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| 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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| CN114876696B (en) | 2024-03-19 |
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