CN218813566U

CN218813566U - Fish collecting device for tail water fish collection of hydropower station

Info

Publication number: CN218813566U
Application number: CN202223170314.5U
Authority: CN
Inventors: 李月伟; 吴俊东; 郭志华; 李克华; 王阳梅
Original assignee: Changjiang Institute of Survey Planning Design and Research Co Ltd
Current assignee: Changjiang Institute of Survey Planning Design and Research Co Ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-04-07
Anticipated expiration: 2032-11-29

Abstract

The utility model provides a fish collecting device for hydropower station tail water fish collection. The fish collecting device comprises an upper open type tail water fish collecting box with the thickness matched with the width of a tail water pipe access door groove and a fish blocking bracket arranged at the open position of the tail water fish collecting box, wherein a fish inlet is formed in the side surface of the tail water fish collecting box, a lifting sliding type fish blocking door is arranged at the fish inlet, and a lifting mechanism is arranged on the open surface of the tail water fish collecting box; the fish blocking brackets are respectively arranged at positions close to two long sides of an opening on the tail water fish collecting box, each fish blocking bracket comprises a floating box body and a fish blocking screen plate, floating box sliding grooves are correspondingly arranged in the tail water fish collecting box, the lower part of the floating box body is embedded into the floating box sliding grooves, and the lower edge of the fish blocking screen plate is hinged with the floating box body; the lifting sliding type fish blocking door comprises a lifting door and a sliding frame lifting mechanism. The utility model discloses can be applicable to various high dam hydraulic and hydroelectric engineering, fish can be improved fish efficiency in efficient collection, transportation and the releasing, protect fish better.

Description

Fish collecting device for tail water fish collection of hydropower station

Technical Field

The utility model relates to a hydraulic engineering and environmental protection engineering technical field, more specifically are a fish collecting device for power station tail water fish collection.

Background

The water conservancy and hydropower engineering brings considerable influence on the ecological environment, particularly on the blocking influence of a fish migration channel while exerting benefits of flood control, power generation, shipping and the like. The fish-passing facility is used as a fish protection measure for relieving the dam blocking effect for more than 300 years internationally, and plays a role in recovering a fish migration channel and communicating genes of upstream and downstream fish groups. The main types of fish passing facilities comprise fishways, fish lifts, lifting lock rooms, fish collecting and transporting systems and the like. The fish collecting and transporting system is suitable for high dam engineering due to the reasons of flexible arrangement, simple and convenient dam passing, fish physical strength saving, investment saving and the like, and is rapidly developed in recent years.

For fish passing facilities, the imported fish collecting efficiency is the most important link related to the fish passing effect no matter what kind of fish passing facilities. According to the migration habit of fishes, fishes generally have a traceability habit, and can trace to the frontmost edge of a blocking barrier (such as a dam) along a main flow, so that the optimal fishway inlet is generally arranged near the dam, but under the actual condition, the fishes are often found to trace up to enter a tail water pipe of a plant, for example, a 2016-year camping electricity hub of Hanjiang and trekka, a large number of fishes in the field trace to enter the tail water pipe, and are trapped at a tail gate slot due to overlarge turbulence, so that not only is the fish feeding effect of the fishway inlet arranged at the bank influenced, but also part of fishes cannot escape and are injured.

The invention patent of publication No. CN109736253A discloses a fish collection box for collecting fish by using tail water and a fish collection method thereof. When the fish collection box works, the fish collection box is connected with a lifting mechanism, the lifting mechanism enables the fish collection box to be placed down to a proper water depth in or outside a tail water pipe or a tail water hole through a guide device, part or all of tail water flows to a fish inlet side (a water outlet side) from the rear side (a water inlet side) of the fish collection box, and the fish collection box can be transversely or longitudinally placed in the tail water hole/pipe; when the power station generates power, the tail water of the power generation flows in from the water inlet side of the fish collection box and flows out from the water outlet side of the fish collection box to form a fish luring water flow, and the fishes enter the fish collection box along the fish inlet under the attraction of the fish luring water flow; after the fish collection box works for a period of time and collects a certain amount of fishes, the lifting mechanism lifts the fish collection box to an operable elevation, and then a subsequent work flow including collection and transfer of the fishes is performed.

Although the fish collecting box disclosed in the above patent can be applied to fish collection of the draft tube, the breast walls are arranged on the upstream and downstream of the draft tube access door slot, and in part of hydraulic engineering, the distance between the breast walls on the upstream and downstream of the upper part of the draft tube access door slot is enlarged, so that the condition that the lower part is narrow and the upper part is wide is formed; the width of the existing fish collection box is specific, and because the upper part of the fish collection box is open, when the fish collection box is lifted to a wider access door groove, fish in the fish collection box easily runs into the access door groove and is difficult to collect again, so that part of fish is detained in the access door groove to cause damage. In addition, the fish inlet of the fish collecting box in the patent is not provided with a gate, and only the fish can conveniently enter in a bell mouth mode to prevent the fish from escaping, but the structure still has the problem that the fish escapes in the actual operation, and the fish is difficult to be kept in the fish collecting box completely.

Disclosure of Invention

The utility model provides a fish collecting device for power station tail water fish collection according to prior art's not enough, this fish collecting device is applicable to the draft tube gate groove of isostructure to can be fine prevent the fish escape, can guarantee the collection condition of fish.

In order to achieve the technical purpose, the utility model provides a fish collecting device for power station tail water fish collection, fish collecting device installs in draft tube access door gate inslot, the width is greater than the width between the regional upstream and downstream barricade in lower part between the regional upstream and downstream barricade in draft tube access door gate slot upper portion, its characterized in that: the fish collecting device comprises an upper open type tail water fish collecting box with the thickness matched with the width of a tail water pipe access door groove and a fish blocking bracket arranged at the open position of the tail water fish collecting box, wherein a fish inlet is formed in the side surface of the tail water fish collecting box, a lifting sliding type fish blocking door is arranged at the fish inlet, and a lifting mechanism is arranged on the open surface of the tail water fish collecting box; the fish blocking brackets are respectively arranged at positions close to two long sides of an opening on the tail water fish collecting box, each fish blocking bracket comprises a floating box body and a fish blocking screen plate, floating box sliding grooves are correspondingly arranged in the tail water fish collecting box, the lower part of the floating box body is embedded into the floating box sliding grooves, and the lower edge of the fish blocking screen plate is hinged with the floating box body; the width of the tail water fish collecting box is equal to that of the tail water pipe orifice access door, the tail water fish collecting box is arranged at the pipe orifice of the tail water pipe, two short side sides are correspondingly embedded into the tail water pipe access door grooves, and the fish inlet is positioned on the back water surface; the two groups of fish blocking brackets are positioned in a region with larger width between upstream and downstream retaining walls at the upper part of a gate slot of a draft tube access door, and the two fish blocking screen plates are opened under the action of the buoyancy tank body and extend to be contacted with corresponding side retaining walls; the lifting sliding type fish blocking door comprises a lifting door and a sliding frame lifting mechanism, when the tail water fish collecting box is located at the pipe orifice of the tail water pipe for collecting fish, the lifting door is in an open state, the tail water fish collecting box moves upwards, and the lifting door slides downwards under the action of the sliding rod lifting mechanism to completely shield the fish inlet.

The utility model discloses further technical scheme: the upper part of the tail water fish collecting box is of a net structure, the lower part of the tail water fish collecting box is provided with a non-net fish containing box, and the width of the fish blocking screen plate is matched with the width of the long edge of the opening of the tail water fish collecting box; and a rubber vibration damper is arranged on the contact surface of the tail water fish collecting box and the tail water pipe access door groove.

The utility model discloses better technical scheme: the device comprises a tail water fish gathering box, a lifting sliding sleeve, a lifting door, a lifting slide bar lifting mechanism and a lifting slide bar lifting mechanism, wherein the lifting slide bar lifting mechanism is provided with two groups, the two groups of slide bar lifting mechanisms are symmetrically arranged, each group of slide bar lifting mechanism comprises a main slide bar, a guide rod and a lifting slide sleeve, the lifting slide sleeve is vertically arranged on the outer side of the upper part of a side plate of a fish inlet of the tail water fish gathering box, the main slide bar is inserted into the lifting slide sleeve and can slide up and down along the lifting slide sleeve, the guide rod is arranged above the lifting door and is parallel to the main slide bar, and the guide rod is connected with the main slide bar through a horizontal connecting rod; door body sliding chutes are correspondingly arranged on two sides of a fish inlet of the tail water fish collection box, and two sides of the lifting door are correspondingly embedded into the door body sliding chutes; when the tail water fish collecting box is located at the mouth of a tail water pipe for collecting fish, the lower orifice of the lifting sliding sleeve is blocked by a retaining wall structure around the gate slot of the tail water pipe access door, the lifting door is suspended above the fish inlet, and in the process of lifting the tail water fish collecting box, the main sliding rod slides downwards along the lifting sliding sleeve, so that the lifting door is driven to move downwards to completely shield the fish inlet.

The utility model discloses better technical scheme: the flotation tank body below is equipped with the balladeur train to through the balladeur train embedding flotation tank spout of lower part, the lower limb that keeps off the fish otter board and the balladeur train hinged joint of flotation tank body lower part, the flotation tank body is when arranging aquatic in and having buoyancy, keeps off the fish otter board and expandes and stretch out tail water collection fish box, when the flotation tank body leaves the water and does not have buoyancy, drives and keeps off the folding gliding of fish otter board to tail water collection fish incasement.

The utility model discloses better technical scheme: the lifting mechanism comprises a supporting plate arranged on the open face of the tail water fish collecting box and lifting lugs fixed on the supporting plate, an opening of the tail water fish collecting box is formed in the supporting plate, and the lifting lugs are symmetrically arranged on two sides of the tail water fish collecting box close to a tail water pipe access door groove.

The utility model discloses better technical scheme: the height of the tail water fish collecting box is 3.5-4 m, the height of the fish containing box is 20-30 cm, and a fish placing opening with a shielding cover is arranged on the fish containing box.

The utility model discloses better technical scheme: the fish inlet is arranged at the screen plate part of the tail water fish collecting box, the height of the fish inlet is 1/2-2/3 of the height of the screen plate, and the length direction of the fish inlet is equal to the length of the side screen plate.

The utility model discloses better technical scheme: the lifting door is a net-shaped fish blocking plate.

The utility model has the advantages that:

(1) The utility model discloses a fish collection case includes width and draft tube gate slot assorted upper uncovered formula netted fish collection case, and the last uncovered fender fish frame that is equipped with of fish collection box keeps off, keeps off the fish frame when fish collection case is along maintenance gate slot rebound, struts the fender and goes up open both sides on fish collection case, avoids because the width in maintenance gate slot is greater than the gate slot, and the fish collection case reachs spacious region, and fish in the box is followed the uncovered run out and is detained at maintenance gate slot, and produces injured risk.

(2) The utility model discloses a keep off fish frame includes flotation tank and blocks fish otter board, blocks fish otter board has two, when the collection fish box moves upwards along the access door groove, because there is water in the gate groove, blocks fish otter board and props open both sides on the collection fish box at the effect of flotation tank, after the flotation tank breaks away from the waters and loses buoyancy, just can drive under the action of gravity and keep off the fish otter board and receive and release to the supporting spout in the collection fish box automatically, the collection fish box width at this moment still matches with the gate groove, alright through tail water door machine and automatic hanging off the roof beam to promote the tail water collection fish box to the tail water platform, and make things convenient for the transportation work of later stage; the utility model discloses well block the automation of fish otter board and receive and release the structure and both can realize keeping off the fish function, can not cause the hindrance to the promotion of collection fish case again.

(3) The side surface of the fish collecting box of the utility model is provided with a fish inlet, the fish collecting device is arranged in the tail water gate groove, the fish inlet faces the inlet of the tail water pipe, the tail water of the power station can be used for luring fish, the flow is large, the fish collecting efficiency is high, and the fish collecting efficiency is improved; the sliding type fish blocking plate is arranged at the fish inlet and is in an opening state in the fish collecting process and is automatically closed in the upward moving process of the fish collecting box, so that fish in the fish collecting box is prevented from escaping from the fish inlet.

(4) The bottom of the fish collecting box of the utility model is provided with the fish containing box which can store part of water, and the fish can not lack water after the fish collecting box is dehydrated; the side of collection fish case is equipped with rubber vibration damper, can guarantee that collection fish case steadily shifts up.

(5) The utility model discloses a fish collection case and draft tube gate slot phase-match to remove along draft tube gate slot, can be applicable to various high dam hydraulic and hydroelectric engineering, fish can be improved to efficient collection, transportation and releasing fish, protects fish better.

Drawings

Fig. 1 is a schematic view of the installation structure of the present invention;

FIG. 2 is a structural diagram of the fish-gathering state of the present invention;

FIG. 3 is a schematic structural view of the lifting process after fish gathering;

FIG. 4 is a schematic structural view of the utility model when the utility model is separated from the gate slot of the draft tube access door;

FIG. 5 is a schematic structural view of the middle tail water fish collecting tank of the present invention;

fig. 6 is a schematic view of the structure of the middle fish blocking bracket of the present invention;

FIG. 7 is a schematic structural view of the middle slide rod lifting mechanism of the present invention

Fig. 8 to 10 are diagrams illustrating the usage of the present invention.

In the figure: 1-tail water fish collecting box, 100-floating box sliding groove, 2-fish blocking bracket, 200-floating box body, 201-fish blocking screen plate, 202-sliding frame, 3-tail water pipe access door groove, 4-tail water pipe, 5-fish inlet, 500-door sliding groove, 6-lifting door, 7-lifting mechanism, 700-supporting plate, 701-lifting lug, 8-sliding rod lifting mechanism, 800-main sliding rod, 801-guide rod, 802-lifting sliding sleeve, 9-fish containing box, 900-fish containing opening, 10-rubber damping device, 11-door type opening and closing machine

Detailed Description

The present invention will be further explained with reference to the drawings and examples. Fig. 1 to 10 are drawings of the embodiment, which are drawn in a simplified manner and are only used for clearly and concisely illustrating the embodiment of the present invention. The following detailed description of the embodiments of the present invention is presented in the drawings and is not intended to limit the scope of the invention as claimed. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are merely for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

The embodiment provides a fish collecting device for hydropower station tail water fish collection, as shown in fig. 1 to 7, the fish collecting device is installed in a tail water pipe access door groove 3, the width between the upstream and downstream retaining walls of the tail water pipe access door groove 3 upper region is greater than the width between the upstream and downstream retaining walls of the lower region, the fish collecting device comprises an upper open type tail water fish collecting box 1 with the thickness matched with the width of the tail water pipe access door groove 3 and a fish blocking bracket 2 arranged at the open of the tail water fish collecting box 1, the upper part of the tail water fish collecting box 1 is of a net structure, the lower part of the tail water fish collecting box is provided with a non-net fish containing box 9, the side surface of the tail water fish collecting box 1 is provided with a fish inlet 5, the fish inlet is provided with a lifting sliding type fish blocking door, the lifting mechanism 7 is arranged on the open surface of the tail water fish collecting box 1, the lifting mechanism 7 comprises a support plate 700 arranged at the open surface of the tail water fish collecting box 1 and lifting lugs 701 fixed on the support plate 700, the support plate 700 is provided with an opening, and the tail water collecting box 1 is symmetrically arranged at two sides close to the tail water pipe 3. And a rubber vibration damper 10 is arranged on the contact surface of the tail water fish collecting box 1 and the tail water pipe access door groove 3. The height of the tail water fish collection box 1 is 3.5-4 m, and the height of the fish containing box 9 is 20-30 cm; a fish placing opening 900 with a shielding cover is arranged on the fish containing box 9. The fish inlet 5 is arranged at the screen plate part of the tail water fish collecting box 1, the height of the fish inlet is 1/2-2/3 of the height of the screen plate, and the length direction of the fish inlet is equal to the length of the side screen plate.

The embodiment provides a fish collecting device for tail water fish collection of a hydropower station, as shown in fig. 1 to 7, two groups of fish blocking brackets 2 are arranged and respectively arranged at positions close to two long sides of an opening on a tail water fish collecting box 1, each group of fish blocking bracket comprises a floating box body 200 and a fish blocking mesh plate 201, and the width of the fish blocking mesh plate 201 is matched with the width of the long side of the opening of the tail water fish collecting box 1; the tail water fish collecting box 1 is correspondingly provided with a floating box sliding groove 100, the lower part of the floating box body 200 is embedded into the floating box sliding groove 100, and the lower edge of the fish blocking net plate 201 is hinged with the floating box body 200. The utility model discloses a fish net plate, including pontoon body 200, balladeur train 202, and the balladeur train 202 below the pontoon body 200 is equipped with balladeur train 202 to balladeur train 202 embedding pontoon spout 100 through the lower part keeps off the lower limb of fish net plate 201 and balladeur train 202 hinged joint of pontoon body 200 lower part, pontoon body 200 is when arranging aquatic in and having buoyancy, keeps off fish net plate 201 and expandes and stretch out tail water collection fish box 1, and when pontoon body 200 left the boiling water and does not have buoyancy, it is folding gliding to tail water collection fish box 1 to drive to keep off fish net plate 201. The width of the tail water fish collecting box 1 is equal to that of the access door of the mouth of the tail water pipe 4, the tail water fish collecting box 1 is arranged at the mouth of the tail water pipe 4, two short sides are correspondingly embedded into the door slots 3 of the access door of the tail water pipe, and the fish inlet 5 is positioned on the back surface; the two groups of fish blocking brackets 2 are positioned in a region with larger width between an upstream retaining wall and a downstream retaining wall at the upper part of the draft tube access door slot 3, and the two fish blocking net plates 201 are opened under the action of the buoyancy tank body 200 and extend to be contacted with the corresponding side retaining walls; the lifting sliding type fish blocking door comprises a lifting door 6 and a sliding rod lifting mechanism 8, and the lifting door 6 is a net-shaped fish blocking plate. When tail water fish collection box 1 is located 4 mouth of pipe collection fishes of draft tube, overhead door 6 becomes the open mode, and tail water fish collection box 1 shifts up the in-process, and overhead door 6 glides under the effect of slide bar elevating system 8 will advance fish mouth 5 and shelter from completely.

The embodiment provides a fish collecting device for collecting fish in tail water of a hydropower station, as shown in fig. 2 to 4, two groups of slide rod lifting mechanisms 8 are arranged, the two groups of slide rod lifting mechanisms 8 are symmetrically arranged, as shown in fig. 7, each group of slide rod lifting mechanisms 8 comprises a main slide rod 800, a guide rod 801 and a lifting sliding sleeve 802, the lifting sliding sleeve 802 is vertically arranged on the outer side of the upper part of a fish inlet side plate of a tail water fish collecting box 1, the main slide rod 800 is inserted into the lifting sliding sleeve 802 and can slide up and down along the lifting sliding sleeve 802, the guide rod 801 is arranged above a lifting door 6 and is parallel to the main slide rod 800, and the guide rod 801 is connected with the main slide rod 800 through a horizontal connecting rod; door body sliding chutes 500 are correspondingly arranged on two sides of a fish inlet 5 of the tail water fish collecting box, and two sides of the lifting door 6 are correspondingly embedded into the door body sliding chutes 500; when 4 mouth of pipe collection fishes of draft pipe are located to tail water collection fish box 1, the lower drill way of lift sliding sleeve 802 blocks through retaining wall structure around draft pipe access door gate slot 3, and lift door 6 suspension is regional above advancing fish mouth 5, lifts the in-process at tail water collection fish box 1, and main slide bar 800 slides down along lift sliding sleeve 802 to it shelters from completely to drive lift door 6 and move down will advance fish mouth 5.

The utility model discloses a fish gathering flow does: (1) a tail water door machine and an automatic hanging joist are used for lowering a tail water fish collecting box 1 and a fish blocking bracket 2 to a 360.00m platform through a tail water door groove, the fish collecting box sinks to a fish collecting height (shown in figure 8) → (2) fish luring and collecting are carried out by utilizing power generation tail water → (3) the fishes are attracted by water flow and move downstream to enter the tail water fish collecting box 1 and the door groove water area; (4) after fish collection is completed, the tail water fish collection box 1 and the fish blocking bracket 2 are lifted out of the water surface through a tail water door machine and an automatic hanging and releasing beam (as shown in fig. 9), at the moment, fishes enter the tail water fish collection box with water flow → (5), the tail water fish collection box 1 is lifted to a tail water platform through the tail water door machine and the automatic hanging and releasing beam (as shown in fig. 10), meanwhile, the fish blocking bracket 2 is lowered to the 360.00m platform and is separated from the fish collecting bracket → (6), the tail water fish collection box is translated to a loading point through the door machine, and the fishes are transferred to a special fish transporting vehicle → (7) for transporting the fishes across a dam.

The above description is only one embodiment of the present invention, and the description is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a fish gathering device for power station tail water fish gathering, fish gathering device installs in draft tube access door gate slot (3), the width is greater than the width between the regional upstream and downstream barricade in lower part between the regional upstream and downstream barricade in draft tube access door gate slot (3) upper portion, its characterized in that: the fish collecting device comprises an upper open type tail water fish collecting box (1) with the thickness matched with the width of a tail water pipe access door slot (3) and a fish blocking bracket (2) arranged at an open position of the tail water fish collecting box (1), a fish inlet (5) is arranged on the side surface of the tail water fish collecting box (1), a lifting sliding type fish blocking door is arranged at the fish inlet, and a lifting mechanism (7) is arranged on the open surface of the tail water fish collecting box (1); the fish blocking brackets (2) are arranged in two groups and are respectively arranged at positions close to two long sides of an opening on the tail water fish collecting box (1), each group of fish blocking brackets comprises a buoyancy box body (200) and a fish blocking mesh plate (201), buoyancy box sliding grooves (100) are correspondingly arranged in the tail water fish collecting box (1), the lower parts of the buoyancy box bodies (200) are embedded into the buoyancy box sliding grooves (100), and the lower edges of the fish blocking mesh plates (201) are hinged with the buoyancy box body (200); the width of the tail water fish collecting box (1) is equal to that of the mouth of pipe access door of the tail water pipe (4), the tail water fish collecting box (1) is arranged at the mouth of pipe of the tail water pipe (4), two short sides are correspondingly embedded into the mouth grooves (3) of the tail water pipe access door, and the fish inlet (5) is positioned on the back surface; the two groups of fish blocking brackets (2) are positioned in a region with larger width between an upstream retaining wall and a downstream retaining wall at the upper part of the draft tube access door slot (3), and the two fish blocking net plates (201) are opened under the action of the floating box body (200) and extend to contact with the corresponding side retaining wall; lifting sliding type keeps off fish door includes overhead door (6) and slide bar elevating system (8), when tail water collection fish case (1) is located draft pipe (4) mouth of pipe collection fish, overhead door (6) become the open mode, and tail water collection fish case (1) shifts up the in-process, and overhead door (6) glide under the effect of slide bar elevating system (8) will advance fish mouth (5) and shelter from completely.

2. A fish collection device for fish collection in the tailwater of a hydroelectric power station according to claim 1, wherein: the upper part of the tail water fish collecting box (1) is of a net structure, the lower part of the tail water fish collecting box is provided with a non-net fish containing box (9), and the width of the fish blocking screen plate (201) is matched with the width of the long edge of an opening of the tail water fish collecting box (1); a rubber vibration damper (10) is arranged on the contact surface of the tail water fish collecting box (1) and the tail water pipe access door groove (3).

3. A fish gathering device for gathering fish in the tail water of a hydropower station according to claim 1 or 2, characterized in that: the device comprises a tail water fish gathering box (1), and is characterized in that two groups of sliding rod lifting mechanisms (8) are arranged, the two groups of sliding rod lifting mechanisms (8) are symmetrically arranged, each group of sliding rod lifting mechanism (8) comprises a main sliding rod (800), a guide rod (801) and a lifting sliding sleeve (802), the lifting sliding sleeve (802) is vertically arranged on the outer side of the upper part of a fish inlet side plate of the tail water fish gathering box (1), the main sliding rod (800) is inserted into the lifting sliding sleeve (802) and can slide up and down along the lifting sliding sleeve (802), the guide rod (801) is arranged above a lifting door (6) and is parallel to the main sliding rod (800), and the guide rod (801) is connected with the main sliding rod (800) through a horizontal connecting rod; door body sliding grooves (500) are correspondingly arranged on two sides of a fish inlet (5) of the tail water fish collection box, and two sides of the lifting door (6) are correspondingly embedded into the door body sliding grooves (500); when tail water collection fish box (1) was located draft tube (4) mouth of pipe collection fish, the lower drill way of lift sliding sleeve (802) was blockked through the barricade structure around draft tube access door gate slot (3), and lift door (6) suspension is regional above fish inlet (5), lifts the in-process on tail water collection fish box (1), and main slide bar (800) glide along lift sliding sleeve (802) to drive lift door (6) and move down and to shelter from completely fish inlet (5).

4. A fish collection device for collecting fish in tail water of a hydropower station according to claim 1 or 2, characterized in that: the utility model discloses a fish net plate structure, including pontoon body (200), balladeur train (202) below to balladeur train (202) through lower part imbed pontoon spout (100), the lower limb that keeps off fish otter board (201) and balladeur train (202) hinged joint of pontoon body (200) lower part, pontoon body (200) keep off fish otter board (201) and expand when arranging aquatic in buoyancy and stretch out tail water collection fish box (1), when pontoon body (200) leaves the boiling water and does not have buoyancy, drive and keep off folding gliding to tail water collection fish box (1) of fish otter board (201).

5. A fish gathering device for gathering fish in the tail water of a hydropower station according to claim 1 or 2, characterized in that: the lifting mechanism (7) comprises a supporting plate (700) arranged on the open face of the tail water fish collecting box (1) and lifting lugs (701) fixed on the supporting plate (700), wherein an opening is formed in the supporting plate (700) and communicated with the tail water fish collecting box (1), and the lifting lugs (701) are symmetrically arranged on two sides, close to a tail water pipe access door groove (3), of the tail water fish collecting box (1).

6. A fish collection device for collecting fish in the tailwater of a hydroelectric power station according to claim 2, wherein: the height of the tail water fish collection box (1) is 3.5-4 m, and the height of the fish containing box (9) is 20-30 cm; a fish placing opening (900) with a shielding cover is arranged on the fish containing box (9).

7. A fish collection device for collecting fish in the tailwater of a hydroelectric power station according to claim 2, wherein: the fish inlet (5) is arranged at the screen plate part of the tail water fish collecting box (1), the height of the fish inlet is 1/2-2/3 of the height of the screen plate, and the length direction of the fish inlet is equal to the length of the side screen plate.

8. A fish collection device for collecting fish in tail water of a hydropower station according to claim 1 or 2, characterized in that: the lifting door (6) is a net-shaped fish baffle.