CN218952108U - Self-cleaning trash rack structure for power station dam water intake - Google Patents

Abstract

The utility model belongs to the technical field of dam trash racks, and discloses a self-cleaning trash rack structure for a water intake of a power station dam, which comprises an arc-shaped water inlet channel constructed on the left side of a mountain, wherein a water inlet of the arc-shaped water inlet channel stretches into a river, a sand flushing channel is arranged at the bottom of the water inlet of the arc-shaped water inlet channel, extension walls are constructed on the left side and the right side of the water inlet of the arc-shaped water inlet channel, and structural upright posts are arranged at one end of the extension walls, which is close to a river.

Description

Self-cleaning trash rack structure for power station dam water intake

Technical Field

The utility model relates to the technical field of dam trash racks, in particular to a self-cleaning trash rack structure for a water intake of a power station dam.

Background

The water inlet of a channel is not provided with trash equipment after a certain river power station is put into operation, the trash is more along with the water entering the channel, the trash is more when in flood, the quality of the generated water is seriously affected, the power generation efficiency is reduced, the equipment and the facility are safely and stably operated, the overhaul workload is increased, the service life of the equipment and the facility is shortened, the trash equipment is quite necessary to add, however, the trash rack is mostly provided with a silt blocking problem, so that the blockage problem is thoroughly solved by arranging a silt removing and blocking device at the trash rack, and the trash can be automatically cleaned and remotely controlled due to difficult operation and maintenance of the equipment caused by remote location and inconvenient traffic of the river power station.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a self-cleaning trash rack structure for a water intake of a power station dam, which has the advantages of high efficiency, blockage and pollution discharge clearing, remote control, energy conservation and the like, and effectively solves the technical problems that the quality of water for power generation is seriously affected by more impurities entering a channel along water in the prior art, the power generation efficiency is reduced, the safety and stable operation of equipment facilities are greatly damaged, the overhaul workload is increased, the service life of the equipment facilities is shortened and the like.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a power station dam intake self-cleaning trash rack structure, includes the arc water inlet canal that leans on mountain left side to construct, the water inlet of arc water inlet canal stretches into in the river, the bottom of arc water inlet canal water inlet is provided with towards the sand ditch, the extension wall has all been constructed to the left and right sides of arc water inlet canal water inlet, the one end that the extension wall is close to the river is provided with the structure stand, two be provided with the supporting beam between the structure stand, the right side construct between structure stand and the mountain has the overflow wall, two the bottom surface of extension wall the top surface of supporting beam and the bottom surface of overflow wall all with the inner wall bottom surface parallel arrangement of arc water inlet canal, towards the sand ditch and be located two extend the wall bottom, two all fixed mounting has the trash rack board between the front of extension wall and the bottom the rear end of trash rack board stretches into in the arc water inlet canal and rather than inner wall bottom surface fixed mounting, two extend between the opposite one side of wall be provided with the drain cleaner, the drain cleaner passes through the left and right side drain cleaner.

In one embodiment of the utility model, the trash rack plate is manufactured by adopting a plurality of flat steels which are arranged horizontally and vertically at equal intervals and are welded in a staggered mode, and gaps among the four flat steels which are welded in a staggered mode form a water passing groove.

In an embodiment of the utility model, the pollution discharge blocking-removing device comprises a pollution removing frame, a sliding frame, two servoers and a plurality of retractable claw pollution removing rakes, wherein the pollution removing frame comprises a right-angle tripod, the left and right ends of the three top edges of the right-angle tripod are fixedly connected with mounting lug seats, the middle part of each mounting lug seat is fixedly connected with an anti-pollution sliding sleeve, a sliding shaft is connected between the two sliding sleeves on the same top edge in a sliding manner, the left and right ends of the three sliding shafts are respectively and fixedly mounted on opposite sides of the two extension walls, the middle part of the right side of the right-angle tripod is fixedly connected with a mounting plate, the mounting plate is fixedly mounted with the end part of the telescopic shaft of one of the servoers, the sliding frame is in sliding connection between the vertical and horizontal inner walls of the right-angle tripod, the end part of the telescopic shaft of the other servomotor is fixedly mounted on the left side of the sliding frame, the two mounting seats of the two servoers are respectively and correspondingly fixedly mounted on opposite sides of the two extension walls, the front surface and the bottom of the right-angle tripod are respectively and fixedly mounted on opposite sides of the two extension walls, the front and the left side of the left tripod are respectively provided with a plurality of retractable claw-shaped claw driving blocks which can extend along the respective retractable claw or retractable claw-type and can be retracted along the length of the telescopic claw.

In an embodiment of the utility model, the retractable claw trash rake comprises a left angle steel and a right angle steel which are arranged in parallel in a mirror image mode, wherein guide rods are fixedly connected to the top and the bottom of the right side of the left angle steel, buffer springs and sleeves are sequentially sleeved outside the guide rods from left to right, the two sleeves are respectively and fixedly connected to the top and the bottom of the right angle steel, the two buffer springs are fixedly connected between the left angle steel and the right angle steel, the front face of the right angle steel is connected with a rotating shaft along the length direction through a shaft seat bearing, a plurality of telescopic claws are equidistantly arranged along the length direction of the rotating shaft, the top and the position close to the middle of each telescopic claw are hinged with one end of a hinged plate, the right side of the left angle steel is fixedly connected with a driving rod along the length direction between the two guide rods, and the other end of each hinged plate is hinged with the surface of the driving rod.

In one embodiment of the utility model, each right angle steel of each retractable claw cleaning rake is fixedly connected with the right angle tripod, and each left angle steel is fixedly connected with the sliding frame.

In one embodiment of the utility model, the number of the retractable claw trash-cleaning rakes is the same as the number of columns of the water passing grooves, and the number of the retractable claws is the same as the number of columns of the water passing grooves.

In one embodiment of the present utility model, the telescopic claw is an arc plate, and the size range of the telescopic claw extending out of the water passing groove is: eighty to ninety millimeters.

In one embodiment of the utility model, the sliding frame comprises two L-shaped linkage frames which are vertically arranged, a supporting plate is fixedly connected between the left sides and the right sides of the two linkage frames, the left sides of the supporting plate and the end parts of the telescopic shafts of one servomotor are fixedly arranged, linear sliding rail assemblies are arranged at the positions, close to the front end and the tail end, of the linkage frames, the linkage frames are connected with the right-angle triangular frame through two groups of linear sliding rail assemblies, and the sliding frame is fixedly connected with each left angle steel of each retractable claw cleaning rake through a plurality of heightening blocks arranged at the front side and the bottom of the sliding frame.

In one embodiment of the utility model, the pollution discharge and blockage removal device is provided with a control device and a wireless signal receiving and transmitting device, and the control device and the wireless signal receiving and transmitting device are in communication connection with a central control room.

In one embodiment of the present utility model, the control device is a PLC controller, and both the relay and the wireless signal transceiver are communicatively connected to the PLC controller.

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

1. according to the utility model, the water inlet of the arc-shaped water inlet channel is extended towards the center, the trash rack plates are additionally arranged at all positions of the water inlet, and sundries at the water inlet are automatically cleaned by utilizing the thrust of river water flow, so that a large amount of sundries are prevented from entering the inside of the generator set to cause equipment stagnation and even damage.

2. According to the utility model, the sewage discharge blocking removing device is arranged and driven by the two servos, the two servos are required to be operated in a certain sequence when applying force, the telescopic claws are turned ninety degrees and gradually extend out of the water tank, and the telescopic claws are used for pulling sundries out to drain the sundries downstream, similar to the process of a paddle, so that the sundries are gradually pushed to the downstream until the sundries are separated from the trash rack plate, and the situation that a large amount of sundries cannot be taken away in time when the flow rate of a water body in a dead water period is low is solved, so that the trash rack structure is suitable for various running water conditions all the year round.

3. The utility model can effectively and remotely monitor and control the pollution discharge blocking-cleaning device by arranging the control device and the wireless signal transceiver device and arranging the water level probe at the position of the trash rack plate in a matching way, thereby effectively solving the problems that the pollution discharge blocking-cleaning device cannot be timely detected and controlled due to inconvenient traffic.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic overall perspective view of the present utility model;

FIG. 2 is a schematic perspective view of a sewage disposal and blocking removal device;

fig. 3 is a schematic perspective view of a trash cleaning frame;

FIG. 4 is a schematic perspective view of a carriage;

fig. 5 is a schematic perspective view of a retractable claw cleaning rake;

FIG. 6 is a schematic plan view of the extension and retraction of the telescoping pawl.

Reference numerals illustrate: 1. an arc-shaped water inlet channel; 11. an extension wall; 12. a structural upright; 13. a support beam; 14. flushing a sand ditch; 15. an overflow wall; 2. a trash rack plate; 3. a pollution discharge and blockage removal device; 31. a decontamination frame; 311. a slide shaft; 312. an anti-fouling sliding sleeve; 313. installing an ear seat; 314. a right-angle tripod; 315. a mounting plate; 32. a carriage; 321. a linkage frame; 322. a lifting block; 323. a linear slide rail assembly; 324. a support plate; 33. a servomotor; 34. a claw-collecting dirt-removing harrow; 341. left angle steel; 342. a driving rod; 343. a hinged plate; 344. a retractable claw; 345. a rotating shaft; 346. a guide rod; 347. a sleeve; 348. right angle steel; 349. and a buffer spring.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Examples

Referring to fig. 1-6, the present utility model aims to solve the problems of the prior art, and provides a self-cleaning trash rack structure for a dam intake of a power station, which comprises an arc-shaped water inlet channel 1 constructed on the left side of a mountain, wherein a water inlet of the arc-shaped water inlet channel 1 extends into a river, a sand flushing channel 14 is arranged at the bottom of the water inlet of the arc-shaped water inlet channel 1, extension walls 11 are constructed on the left side and the right side of the water inlet of the arc-shaped water inlet channel 1, structural upright posts 12 are arranged at one end of the extension walls 11, which is close to the river, a supporting cross beam 13 is arranged between the two structural upright posts 12, an overflow wall 15 is constructed between the structural upright posts 12 on the right side and the mountain, the bottom surfaces of the two extension walls 11, the top surfaces of the supporting cross beam 13 and the bottom surfaces of the overflow wall 15 are all arranged in parallel with the bottom surfaces of the inner walls of the arc-shaped water inlet channel 1, the sand flushing channel 14 is positioned at the bottoms of the two extension walls 11, trash rack plates 2 are fixedly arranged between the front surfaces and the bottoms of the two extension walls 11, the rear ends of the trash rack plates 2 at the bottoms extend into the arc-shaped water inlet channel 1 and are fixedly arranged with the bottom surfaces of the inner walls, an overflow wall 15 is constructed between the two opposite to the two extension walls, a left side and a drain blocking device 3 is arranged, and a drain blocking device is arranged, and a drain device is reciprocally and a drain device, and is and used.

In one embodiment of the utility model, the trash rack plate 2 is further manufactured by adopting a plurality of flat steels which are arranged horizontally and vertically at equal intervals and are welded in a staggered mode, and gaps among the four flat steels which are welded horizontally and vertically in a staggered mode form a water passing groove.

Specifically, as shown in fig. 1, an extending wall is arranged at the water inlet of an original arc-shaped water inlet channel 1 towards the center of a river, a structural upright post 12 is arranged, a supporting steel cage is embedded at the bottom of the structural upright post 12 until the depth of the structural upright post is about 2m wide and 1.2m long, and a sand flushing channel 14 is reserved for being 2m in height and 3m in width; the supporting beams 13 are arranged between the two structural upright posts 12, the upper plane of the supporting beams 13 is horizontal to the bottom of the channel, the lower upright post extends to the beam Fang Xiangyan to the overflow dam to pour the overflow wall 15, the left edges of the overflow wall 15 and the overflow weir of the dam are kept connected on the same straight line, and the whole cofferdamAdopting C25 concrete, the main steel bar is not lower than

Screw-thread steel with a spacing of 100mm and stirrups not lower than +.>

The reinforcing steel bar extends to river center through the water inlet with arc water inlet channel 1 to utilize the thrust of river forward flow to with the forward flow of the rubbish that blocks up in trash rack board 2 department, debris etc. to combine clear stifled device 3 of blowdown to clear up trash rack board 2, thereby effectively prevent that upstream rubbish, debris from getting into arc water inlet channel 1 along water, thereby seriously influence the electricity generation water quality, reduce generating efficiency, the circumstances that causes very big harm to equipment facility safe and stable operation appears, thereby reduce maintenance work load, equipment facility life has been prolonged.

In an embodiment of the present utility model, further, the blowdown and blockage removing device 3 includes a sewage removing frame 31, a sliding frame 32, two servoers 33 and a plurality of retractable claw sewage removing rakes 34, the sewage removing frame 31 includes a right-angle tripod 314, the left and right ends of the three top edges of the right-angle tripod 314 are fixedly connected with a mounting ear seat 313, the middle part of the mounting ear seat 313 is fixedly connected with an anti-fouling sliding sleeve 312, a sliding shaft 311 is slidingly connected between the two sliding sleeves of the same top edge, the left and right ends of the three sliding shafts 311 are respectively and fixedly installed on opposite sides of the two extending walls 11, the middle part of the right side of the right-angle tripod 314 is fixedly connected with a mounting plate 315, the mounting plate 315 is fixedly installed on the telescopic shaft end of one servomotor 33, the sliding frame 32 is slidingly connected between the vertical and horizontal inner walls of the right-angle tripod 314, the telescopic shaft end of the other servomotor 33 is fixedly installed on the left side of the sliding frame 32, the mounting seats of the two servoers 33 are respectively and fixedly installed on opposite sides of the two extending walls 11, the front and bottom of the right-angle tripod 314 are respectively and freely provided with a plurality of retractable claw driving claws 34 which can be retracted along the respective lengths of the telescopic claw 344, and the retractable claw 32 are respectively and the retractable in the directions of the telescopic claw 32 are respectively.

In one embodiment of the present utility model, further, the retractable claw trash rake 34 includes a left angle steel 341 and a right angle steel 348 arranged in parallel in mirror image, the top and the bottom of the right side of the left angle steel 341 are fixedly connected with a guide rod 346, a buffer spring 349 and a sleeve 347 are sleeved outside the guide rod 346 in sequence from left to right, the two sleeves 347 are respectively and fixedly connected to the top and the bottom of the right angle steel 348, the two buffer springs 349 are respectively and fixedly connected between the left angle steel 341 and the right angle steel 348, the front surface of the right angle steel 348 is connected with a rotating shaft 345 through a shaft seat bearing along the length direction, a plurality of retractable claws 344 are equidistantly arranged along the length direction on the rotating shaft 345, the top and the near middle part of the retractable claws 344 are hinged with one end of a hinged plate 343, the right side of the left angle steel 341 is fixedly connected with a driving rod 342 along the length direction between the two guide rods 346, and the other end of each hinged plate 343 is hinged with the surface of the driving rod 342.

In one embodiment of the present utility model, further, each right angle steel 348 of each retractable claw cleaning rake 34 is fixedly connected to the right angle tripod 314, and each left angle steel 341 is fixedly connected to the sliding frame 32.

In one embodiment of the present utility model, the number of retractable claw cleaning rakes 34 is the same as the number of rows of water passing grooves, and the number of retractable claws 344 is the same as the number of rows of water passing grooves.

In one embodiment of the present utility model, further, the telescopic claw 344 is an arc plate, and the size range of the telescopic claw extending out of the water trough is: eighty to ninety millimeters.

In one embodiment of the present utility model, further, the sliding frame 32 includes two L-shaped linkage frames 321 vertically arranged, a support plate 324 is fixedly connected between the left side and the right side of the two linkage frames 321, the left side of the support plate 324 is fixedly installed at the end of the telescopic shaft of one servomotor 33, the two ends of the linkage frames 321 close to the head and the tail are respectively provided with a linear sliding rail assembly 323, the linkage frames 321 are connected with the right-angle tripod 314 through two groups of linear sliding rail assemblies 323, and the sliding frame 32 is fixedly connected with each left angle steel 341 of each retractable claw cleaning rake 34 through a plurality of raised blocks 322 arranged at the front and the bottom of the sliding frame 32.

Specifically, as shown in fig. 2-6, by arranging the blowdown and blocking device 3, the blocked sundries at the trash rack plate 2 can be dredged in time, the sundries are pushed away along the water flow direction and are brought to the downstream through the water flow, so that the trash and sundries are prevented from blocking the water inlet of the arc-shaped water inlet channel 1, the blowdown and blocking device 3 is composed of a trash cleaning frame 31, a sliding frame 32, two relay devices 33 and a plurality of groups of retractable claw trash cleaning rakes 34, three sliding shafts 311 are fixed between two extended walls 11 of the water inlet of the arc-shaped water inlet channel 1, and the trash cleaning frame 31 can transversely slide between the three sliding shafts 311 by arranging the trash cleaning sliding sleeves 312 at the two ends of the three top edges of the right-angle triangular frame 314, and is driven by the relay devices 33 fixed on the right-side extended walls 11;

secondly, by arranging a plurality of groups of retractable claw cleaning rakes 34 at the front and the bottom of the cleaning frame 31 and close to the two trash rack plates 2 at equal intervals, fixing each right angle steel 348 with the cleaning frame 31, fixing each left angle steel 341 with the sliding frame 32, sliding the sliding frame 32 into the cleaning frame 31 through the linear sliding rail component 323, connecting the left side of the sliding frame 32 with the servomotor 33 arranged on the left extending wall 11, when the cleaning frame 31 keeps static, moving left and right through the sliding frame 32, driving all the left angle steel 341 to displace, guiding by two guide rods 346 to move close to or far from the right angle steel 348, driving the driving rod 342 and the hinging plate 343 to displace, pulling the telescopic claw 344 through the hinging plate 343, enabling the telescopic claw 344 to rotate by taking the hinging position with the rotating shaft 345 as a fulcrum, completing ninety degrees of overturning action, and enabling the telescopic claw 344 to extend out of the water trough to move away sundries blocked outside the trash rack plates 2 along the water flow direction, thereby dredging effect is achieved;

in order to realize the stirring action of the telescopic claw 344, when the two servos 33 apply force, for example, initially, the telescopic claw 344 is horizontally suspended near the water trough, the left servomotor 33 drives the sliding frame 32 to move rightwards to drive each left angle steel 341 to approach the right angle steel 348, the hinge plate 343 pushes each telescopic claw 344 to turn ninety degrees and gradually extend out of the water trough, then the two servos 33 are started simultaneously, the right triangular frame 314 and the sliding frame 32 synchronously pull sundries to the right and drain the sundries downstream through the telescopic claw 344, when the telescopic claw 344 reaches the right end of the water trough, the servos 33 are controlled in the opposite order, after the telescopic claw 344 is retracted, the two servos 33 are utilized to reset the sewage disposal blocking device 3 to conduct the next round of forward stirring, similar to the process of a paddle, so that sundries are gradually pushed downstream until the sewage disposal blocking device 3 is separated from the sewage blocking plate 2, the condition that the flow rate is insufficient can be effectively relieved by arranging the sewage disposal blocking device 3, sundries cannot be removed through forward flow when the impact force is at the bottom, the sewage blocking device can effectively prevent sundries from entering the arc-shaped water source 1.

In one embodiment of the utility model, the pollution discharge and blockage removal device 3 is further provided with a control device and a wireless signal receiving and transmitting device, and the control device and the wireless signal receiving and transmitting device are in communication connection with the central control room.

In one embodiment of the present utility model, further, the control device is a PLC controller, and both the relay device 33 and the wireless signal transceiver device are communicatively connected to the PLC controller.

Specifically, through setting up controlling means and radio signal transceiver to cooperate and set up water level probe in trash rack board 2 department, can effectively remote monitoring, control blowdown clear stifled device 3, thereby effectively solve because of the inconvenient transportation, unable in time detect control blowdown clear stifled device 3 scheduling problem.

The working principle of the self-cleaning trash rack structure for the water intake of the power station dam is as follows: according to the structure, the water inlet of the arc-shaped water inlet channel 1 is extended towards the center, the trash rack plates 2 are additionally arranged at all positions of the water inlet, and sundries at the water inlet are automatically cleaned by utilizing the thrust of river water flow, so that a large amount of sundries are prevented from entering the inside of the generator set to cause equipment stagnation and even damage;

meanwhile, in order to match the situation that a large amount of sundries cannot be taken away in time when the flow rate of the water body in the dead water period is low, by arranging the sewage disposal blocking device 3 and driving the two servoers 33, the two servoers 33 need to be in a certain sequence when applying force, for example, initially, the telescopic claws 344 hover near the water tank horizontally, the left side servoers 33 firstly drive the sliding frame 32 to move rightwards so as to drive the left angle steel 341 to approach the right angle steel 348, the telescopic claws 344 are pushed to overturn ninety degrees through the hinging plate 343 and gradually extend out of the water tank, then the two servoers 33 are simultaneously started, the right angle tripod 314 and the sliding frame 32 synchronously pull the sundries to the right and pull the sundries out of the downstream through the telescopic claws 344, when the telescopic claws 344 reach the right end of the water tank, the servoclaws 33 are controlled in the opposite sequence, after the telescopic claws 344 are retracted, the two servoers 33 are utilized to reset the sewage disposal blocking device 3, the next round of forward stirring process is carried out, similar to the paddle pulling process, and the sundries are gradually pushed downstream until the sundries are separated from the sewage barrier plate 2.

It should be noted that, the model specifications of the sliding shaft 311, the anti-fouling sliding sleeve 312, the linear sliding rail assembly 323, the servomotor 33, the control device and the wireless signal transceiver need to be determined according to the actual specifications of the device, and the specific model selection calculation method adopts the prior art in the field, so that detailed description is omitted.

The power supply and the principle of the sliding shaft 311, the anti-fouling sliding sleeve 312, the linear slide assembly 323, the servomotor 33, the control device and the wireless signal transceiver will be apparent to those skilled in the art, and will not be described in detail herein.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations may be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The utility model provides a power station dam intake self-cleaning trash rack structure, includes arc water inlet canal (1) of leaning on mountain left side construction, in the water inlet of arc water inlet canal (1) stretches into the river, the bottom of arc water inlet canal (1) water inlet is provided with towards sand ditch (14), a serial communication port, the left and right sides of arc water inlet canal (1) water inlet all is constructed extension wall (11), the one end that extension wall (11) is close to the river is provided with structure stand (12), two be provided with supporting beam (13) between structure stand (12), the right side be constructed between structure stand (12) and the mountain overflow wall (15), two the bottom surface of extension wall (11) the top surface of supporting beam (13) and the bottom surface of overflow wall (15) all with the inner wall bottom parallel arrangement of arc water inlet canal (1), it is located two extension wall (11) bottoms to wash sand ditch (14), two between the front of extension wall (11) and the bottom is provided with structure stand (12), two trash rack (2) are installed to the bottom surface (2) between the fixed to install between two drain side of the inner wall (1) and the drain board (2), the sewage disposal blocking-removing device (3) cleans the blocked trash rack plate (2) by left and right reciprocating transverse movement.

2. The self-cleaning trash rack structure for the water intake of the power station dam according to claim 1, wherein the trash rack plate (2) is made of a plurality of flat steels which are arranged horizontally and vertically at equal intervals in a staggered mode, and gaps among the four flat steels which are welded horizontally and vertically in a staggered mode form a water passing groove.

3. The self-cleaning trash rack structure for a water intake of a dam of a power station according to claim 2, wherein the sewage disposal blocking device (3) comprises a trash rack (31), a sliding frame (32), two relays (33) and a plurality of retractable trash racks (34), the trash rack (31) comprises right-angle triangular frames (314), the left and right ends of three top edges of the right-angle triangular frames (314) are fixedly connected with mounting lugs (313), the middle parts of the mounting lugs (313) are fixedly connected with anti-fouling sliding sleeves (312), one sliding shaft (311) is slidingly connected between the two sliding sleeves on the same top edge, the left and right ends of the three sliding shafts (311) are fixedly mounted on the opposite sides of two extending walls (11) respectively, the middle parts of the right sides of the right-angle triangular frames (314) are fixedly connected with mounting plates (315), the mounting plates (32) are fixedly mounted on the end parts of telescopic shafts of one of the two extending walls (33), the sliding frames (32) are slidingly connected with the two telescopic shafts (33) which are fixedly mounted on the opposite sides of the two extending walls (11) of the two extending walls (33), the right-angle tripod (314) is characterized in that a plurality of retractable claw trash-cleaning rakes (34) are arranged on the front surface and the bottom of the right-angle tripod from left to right at equal intervals, a plurality of telescopic claws (344) are arranged on the retractable claw trash-cleaning rakes (34) along the length direction at equal intervals, and each retractable claw trash-cleaning rake (34) drives each telescopic claw (344) to extend or retract to open a blockage through the corresponding water trough through the sliding frame (32).

4. A station dam intake self-cleaning trash rack structure according to claim 3, characterized in that, but receivability claw trash rake (34) is including left angle steel (341) and right angle steel (348) that are mirror image setting side by side, the top and the bottom on left angle steel (341) right side are all fixedly connected with guide bar (346), the outside of guide bar (346) is from left to right overlapped in proper order and is equipped with buffer spring (349) and sleeve pipe (347), two sleeve pipe (347) respectively fixed connection in top and bottom of right angle steel (348), two buffer spring (349) all fixed connection in between left angle steel (341) and right angle steel (348), the front of right angle steel (348) is connected with axis of rotation (345) through the axle bed bearing along length direction, axis of rotation (345) are provided with a plurality of along length direction equidistance flexible claw (344), the top and be close to middle part department and hinge plate (342) one end articulates, left angle steel (341) right side and guide bar (342) are located between two hinge plate (342) are connected with each other end (342) along length direction fixed connection between two guide bar (342).

5. The self-cleaning trash rack structure for a water intake of a power station dam according to claim 4, wherein each right angle steel (348) of each retractable claw trash rack (34) is fixedly connected with the right angle tripod (314), and each left angle steel (341) is fixedly connected with the sliding frame (32).

6. The self-cleaning trash rack structure for a water intake of a power station dam according to claim 5, wherein the number of the retractable trash rakes (34) is the same as the number of the water passing grooves, and the number of the retractable rakes (344) is the same as the number of the water passing grooves.

7. The self-cleaning trash rack structure for a water intake of a power station dam according to claim 6, wherein the telescopic claw (344) is an arc plate, and the size range of the telescopic claw extending out of the water passing groove is as follows: eighty to ninety millimeters.

8. The self-cleaning trash rack structure for the water intake of the dam of the power station according to claim 4, wherein the sliding frame (32) comprises two linkage frames (321) which are vertically arranged in an L shape, a supporting plate (324) is fixedly connected between the left sides and the right sides of the two linkage frames (321), the left sides of the supporting plate (324) and the end parts of telescopic shafts of one servomotor (33) are fixedly installed, linear sliding rail assemblies (323) are respectively arranged at the positions, close to the front end and the tail end, of the linkage frames (321), the two linear sliding rail assemblies (323) are connected with the right-angle triangular frame (314), and the sliding frame (32) is fixedly connected with each left angle steel (341) of each retractable claw trash rake (34) through a plurality of heightening blocks (322) arranged on the front face and the bottom of the sliding frame.

9. A self-cleaning trash rack structure for a water intake of a power station dam according to claim 3, wherein the blowdown and blockage removing device (3) is provided with a control device and a wireless signal receiving and transmitting device, and the control device and the wireless signal receiving and transmitting device are in communication connection with a central control room.

10. The self-cleaning trash rack structure for the water intake of the power station dam according to claim 9, wherein the control device is a PLC controller, and the two relays (33) and the wireless signal receiving and transmitting device are both in communication connection with the PLC controller.

Images