CN114319255B - Top-exposed arc gate system provided with stoplog type anti-overflow sliding gate leaf and gate opening and closing method - Google Patents

Abstract

The invention discloses an open-top arc gate system with a stoplog type anti-flood sliding gate leaf and a gate opening and closing method, and mainly adopts the technical scheme that gate slots are arranged at gate piers on two sides of an open-top arc gate; the plurality of stop-log type sliding door leaves comprise stop-log type door leaves, first bottom water seal devices arranged at the bottoms of the stop-log type door leaves, first side water seal devices arranged on two sides of the upstream surfaces of the stop-log type door leaves, sliding mechanisms arranged on the stop-log type door leaves and used for enabling the stop-log type door leaves to slide in door grooves, and first transverse limiting mechanisms arranged on the stop-log type door leaves; the top-exposed arc gate comprises an arc gate leaf and arc side rails pre-embedded on the side edges of the downstream gate piers; the opening and closing device comprises a dam top gantry crane rotary lifting mechanism for lifting and placing the stop log type gate blade, two lifting driving mechanisms for enabling the stop log type gate blade to move up and down in the gate slot and an arc gate opening and closing driving mechanism for driving the arc gate blade to open and close.

Description

Top-exposed arc gate system provided with stoplog type anti-overflow sliding gate leaf and gate opening and closing method

Technical Field

The invention relates to the technical field of water conservancy and hydropower engineering, in particular to an exposed-top arc gate system provided with a stoplog type anti-flooding sliding gate leaf and a gate opening and closing method.

Background

At present, the design of the water conservancy and hydropower steel gate is relatively standard, the water retaining height of the arc-shaped gate with the exposed top is generally normal water storage level plus safe superelevation, and the top of the gate is strictly forbidden to pass water during operation. When abnormal rainfall, starting and stopping equipment faults, power supply faults or operation scheduling errors occur, the water level of a reservoir rises to exceed a normal water storage level and the gate is safe and ultrahigh, and the gate is not opened in time, the situation that the top of the gate is overflowed occurs, the gate is subjected to huge impact force due to overflowed water, corresponding calculation formulas and test data information are lacked domestically, at the moment, if the gate is opened blindly, the gate and the starting and stopping equipment can be damaged, and the probability of door opening success is very small. If the gate can not be opened in time to discharge flood at the moment, the risk of dam overflowing or dam break is generated, and great influence is caused on the life safety and property loss of upstream and downstream residents. At present, when gate top flood occurs, the method which can be adopted is mainly to gradually reduce the reservoir water level by means of scheduling control of the downward discharge flow of an upstream power station and increase of the unit overflow, but if the rainfall capacity is continuously increased, when the method cannot control the water level to rise, flood discharge is carried out only through destructive measures, such as blasting of flood discharge facilities or local flood discharge of a dam, and the more serious consequences of dam overflow, dam break and the like are avoided.

According to related data, in the case of the dam overflowing accidents in China, the open top gate cannot be started in the water overflowing process, the open top gate is often found in reservoirs with small reservoir capacity and large flood flow, the key is to improve the safe operation reliability of the dam and solve the problem that the open top arc gate is started in the early water overflowing stage.

Disclosure of Invention

In view of the above, the present invention provides an open-top arc gate system with a stop log type sliding gate leaf and a gate opening and closing method, and mainly aims to provide an open-top arc gate system with a stop log type sliding gate leaf and a gate opening and closing method, which improve the safety operation reliability of a dam and solve the problem of the success rate of the open-top arc gate in the early stage of flood.

In order to achieve the purpose, the invention mainly provides the following technical scheme:

in one aspect, embodiments of the present invention provide an open-topped arcuate gate system configured with a cross-beam flood resistant sliding gate leaf. It includes:

the gate slots are arranged at gate piers at two sides of the open-top arc gate;

the arc-shaped side rails are pre-buried at the side edges of the downstream gate piers;

a plurality of stop-motion sliding door leaves installed in the door slot in a vertically stacked manner and slidable in the door slot, each stop-motion sliding door leaf comprising a stop-motion door leaf, a first bottom water seal device installed at the bottom of the stop-motion door leaf, first side water seal devices installed on both sides of the upstream surface of the stop-motion door leaf, a sliding mechanism installed on the stop-motion door leaf and sliding the stop-motion door leaf in the door slot, and a first lateral limiting mechanism installed on the stop-motion door leaf and limiting the stop-motion door leaf from moving laterally in the door slot;

the exposed-top arc gate comprises arc gate leaves and arc side rails pre-embedded on the side edges of a downstream gate pier, the exposed-top arc gate moves along the arc side rails, the top of each of the stop beam type gate leaves and the top of each of the arc gate leaves are provided with working surfaces matched with the first bottom water sealing devices, when two adjacent stop beam type sliding gate leaves are overlapped and connected, the top of the stop beam type gate leaf positioned below is matched and connected with the first bottom water sealing device positioned at the bottom of the stop beam type gate leaf positioned above so that the two adjacent stop beam type sliding gate leaves are overlapped and connected, and the top of each of the arc gate leaves is matched and connected with the first bottom water sealing device positioned above the top of the arc gate leaf so that the stop beam type sliding gate leaves are connected with the exposed-top arc gate;

the opening and closing device comprises two lifting driving mechanisms, a dam top gantry crane rotary lifting mechanism and an arc gate opening and closing driving mechanism, wherein the two lifting driving mechanisms are connected with the stoplog type door leaf and enable the stoplog type door leaf to move up and down in the door slot, the dam top gantry crane rotary lifting mechanism is connected with the stoplog type door leaf and used for lifting the stoplog type door leaf, and the arc gate opening and closing driving mechanism is connected with the arc door leaf and used for driving the arc door leaf to open and close.

As described above, the sliding mechanism includes at least two slider devices mounted on both sides of the upstream surface of the stop log gate blade, at least two reverse wheel devices mounted on both sides of the downstream surface of the stop log gate blade, a main rail embedded on the upstream side of the gate slot, and a reverse rail embedded on the downstream side of the gate slot;

at least two sliding block devices are matched and connected with the main rail track and slide up and down on the main rail track;

at least two reverse wheel devices are matched and connected with the reverse rail main working surface and slide up and down or roll up and down on the reverse rail main working surface;

and the first side water seal device is matched and connected with the main working surface of the main rail.

As previously mentioned, the primary running surface of the primary rail and the primary running surface of the counter rail are both parallel to the leaf of the lap beam;

the secondary working surface of the main rail and the secondary working surface of the reverse rail are both parallel to the water flow direction;

the water-facing panel, the main rail and the reverse rail of the stop log type door leaf are all arc-shaped, and the radian of the arc-shaped is consistent with that of the arc-shaped door leaf panel.

As previously mentioned, the first lateral limiting mechanism comprises at least two first side wheel devices mounted on both sides of the upstream face of the stop log gate blade and at least two second side wheel devices mounted on both sides of the downstream face of the stop log gate blade; at least two first side wheel devices are matched and connected with the primary rail secondary working surface and slide up and down or roll up and down on the primary rail secondary working surface; and at least two second side wheel devices are matched and connected with the counterrail secondary working surface and slide up and down or roll up and down on the counterrail secondary working surface.

As mentioned above, the top-exposed arc gate further comprises a second bottom water seal device arranged at the bottom of the arc gate blade, second side water seal devices arranged on two sides of the upstream surface of the arc gate blade, an arc side water seal seat embedded in the concrete of the pier side wall of the upstream side gate and connected with the second side water seal devices in a matching manner, a second transverse limiting mechanism arranged on the arc gate blade and used for limiting the arc gate blade to transversely move between the arc side rails, a bottom sill embedded on the weir top downstream side of the overflow weir and connected with the second bottom water seal device in a matching manner, and a support arm mechanism connected with the arc gate blade.

As mentioned above, the second lateral limiting mechanism includes at least two third side wheel devices installed at positions on two side surfaces of the arc-shaped door leaf close to downstream, and the at least two third side wheel devices are connected with the arc-shaped side rail in a matching manner and slide or roll up and down on the arc-shaped side rail.

As before, the support arm mechanism includes two support arms and a hinge device, the one end of two support arms all with the arc door leaf is connected, the other end of two support arms all with the hinge device is connected, the hinge device be connected with the foundation bolt on the gate pier side wall.

As mentioned above, the two ends of the top of the stop log door leaf are both provided with the lifting lugs;

the two lifting driving mechanisms comprise a traction mechanism and a fixed pulley device;

the traction mechanism comprises a first steel wire rope connected with the lifting lug, a horizontal hoisting traction machine connected with the first steel wire rope and a first control cabinet used for controlling the horizontal hoisting traction machine to work; and the fixed pulley device is positioned between the lifting lug and the horizontal winch tractor and is used for dragging the first steel wire rope.

As mentioned above, the gate opening and closing driving mechanism includes a hydraulic oil cylinder, a high-pressure oil pipe, a hydraulic pump station and a second control cabinet for controlling the hydraulic pump station, one end of the hydraulic oil cylinder is connected with the arc-shaped door leaf, the other end of the hydraulic oil cylinder is connected with the support hinge seat, one end of the high-pressure oil pipe is connected with the hydraulic oil cylinder, and the other end of the high-pressure oil pipe is connected with the hydraulic pump station;

the hydraulic pump station conveys operating oil sources to the hydraulic oil cylinder through a high-pressure oil pipe, and the opening degree of the top-exposed arc-shaped gate is controlled by controlling the extension and retraction of a hydraulic piston rod on the hydraulic oil cylinder.

In another aspect, an embodiment of the present invention provides a method for opening and closing a gate using an open-top arc gate system configured with a cross-beam anti-flooding sliding gate leaf, including the following steps:

s1, a drop-stop type sliding door leaf: hoisting and conveying a single-section stoplog type sliding door leaf to a door slot opening position by using a dam top door machine rotary hoisting mechanism, gradually putting the stoplog type sliding door leaf into the door slot, connecting a rope head of a first steel wire rope with a lifting lug when the lifting lug is lower than a fixed pulley device, starting two horizontal hoisting tractors to stress the first steel wire rope, and then removing the force of the dam top door machine rotary hoisting mechanism; finally, two horizontal hoisting tractors are synchronously started, the stop log type sliding door leaf is gradually lowered to the top of the exposed arc gate by means of the dead weight of the stop log type sliding door leaf, if the water retaining height of a single stop log type sliding door leaf is not enough, the operations are repeated, and the lowering of the 2 nd stop log type sliding door leaf is carried out;

s2, lifting the arc gate with the exposed top: when the total heights of the exposed top arc gate and the upper stop log type sliding gate leaf are higher than the reservoir water level and the arc gate leaf has no water overflow or water leakage, starting the gate opening and closing driving mechanism to carry out the opening operation of the exposed top arc gate, and stopping running the gate opening and closing driving mechanism when the top of the exposed top arc gate door is exposed out of the water level and reaches a certain safe height or the top of the topmost stop log type sliding gate leaf reaches the gate notch;

s3, lifting the stoplog type sliding door leaf: when the top-exposed arc gate is lifted to a certain height, synchronously starting a horizontal hoisting tractor to lift the stop-log type gate leaves, and stopping the horizontal hoisting tractor when the stop-log type gate leaves lifting lugs are exposed out of the gate slots; connecting the lifting lug with a gantry crane rotary lifting mechanism, lifting the stop log type door leaf by using the gantry crane to rotate, and removing the first steel wire rope;

s4, lifting the arc-shaped exposed top gate to a set opening degree: and after the stop log type sliding door leaves are all hung out, the arc-shaped open-top gate is restored to a normal state, and the gate opening and closing driving mechanism is started to open the arc-shaped open-top gate to a set opening degree according to the scheduling requirement.

By the technical scheme, the invention (name) at least has the following advantages:

1. according to the roof-exposed arc gate system with the stop log type anti-flood sliding gate leaves and the gate opening and closing method, the stop log type gate leaves are timely dropped to block water when the gate roof floods, so that the roof-exposed arc working gate can be successfully opened when the flood occurs, the reservoir downward discharge amount is timely increased, the accident is prevented from being further expanded, and an emergency risk avoiding effect is achieved;

2. according to the open-top arc gate system with the overlapped beam type anti-flood sliding gate leaf and the gate opening and closing method, the adopted overlapped beam type gate leaf has the characteristics of simple structure, light weight and flexible opening and closing, and can be hoisted by matching a gate machine revolving crane on the dam crest with a small horizontal hoisting tractor;

3. the open-top arc gate system provided with the stop log type anti-flood sliding gate leaves and the gate opening and closing method can be matched with a plurality of working gates of the same type by arranging a plurality of stop log type sliding gate leaves and opening and closing driving mechanisms, and have low manufacturing cost;

4. the open-top arc gate system provided with the stop log type anti-flood sliding gate leaf and the gate opening and closing method have small technical improvement workload for the built power station, and after the stop log type gate leaf is configured, only the gate slot above the gate top of the working gate needs to be increased, the original design size of the working gate is not changed, the design opening and closing force of a hydraulic opening and closing machine is not increased or slightly increased, and the manpower, financial resources and material resources are saved;

5. according to the open-top arc gate system with the stop log type anti-flood sliding gate leaves and the gate opening and closing method, the stop log type anti-flood sliding gate leaves and the gate opening and closing device are configured to serve as matched emergency measures of the working gate, so that the safe operation reliability of the dam can be greatly improved, the application range is wide, and the effect on power stations with small storage capacity and large flow in flood season, earth and rockfill dam power stations and the like is more obvious.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to make the technical solutions of the present invention practical in accordance with the contents of the specification, the following detailed description is given of preferred embodiments of the present invention with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic cross-sectional view of the center line of an orifice in an embodiment of the present invention;

FIG. 2 is a schematic view of an embedment in an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of an embedded part C-C according to an embodiment of the invention;

FIG. 4 is a schematic cross-sectional view of a pre-embedded part D-D in an embodiment of the invention;

FIG. 5 is a schematic front view of the upper and lower streams of a cross-piece sliding door leaf (left upstream and right downstream) according to an embodiment of the present invention;

FIG. 6 isbase:Sub>A schematic cross-sectional view ofbase:Sub>A cross-sectional A-A ofbase:Sub>A cross-sectional view ofbase:Sub>A stop-leaf of an embodiment of the present invention;

FIG. 7 is a schematic view of a door slot portion III of a stop log type sliding door according to an embodiment of the present invention;

FIG. 8 is a schematic view of a bottom seal I of a leaf of a stop-log type sliding door according to an embodiment of the present invention;

FIG. 9 is a schematic sectional view of a top-exposed arcuate gate B-B according to an embodiment of the present invention;

FIG. 10 is a schematic view of a second side water seal assembly and a third side wheel VI according to the embodiment of the present invention;

FIG. 11 is a schematic view of a second bottom water seal device II in the embodiment of the present invention.

Detailed Description

To further explain the technical means and effects of the present invention adopted to achieve the predetermined object, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

As shown in fig. 1, an embodiment of the present invention provides a flat arc gate system with a cross-member type anti-flooding sliding gate blade, comprising: the device comprises a gate slot 1, a plurality of stoplog type sliding gate leaves 2, an open-top arc gate 3 and an opening and closing device 4.

As shown in FIG. 1, the gate slot 1 is arranged on the gate piers 5 at both sides of the arc gate 3 with the exposed top, and the range is from the normal water level to the top of the gate piers 5.

As shown in fig. 1 to 8, the plurality of the sliding door leaves 2 are installed in the door groove 1 in a vertically stacked manner and are slidable in the door groove 1, and each of the plurality of sliding door leaves 2 includes a sliding door leaf 21, a first bottom water seal device 22 installed at a bottom of the sliding door leaf 21, first side water seal devices 23 installed on both sides of an upstream surface of the sliding door leaf 21, a sliding mechanism 24 installed on the sliding door leaf 21 and sliding the sliding door leaf 21 in the door groove 1, and a first lateral stopper mechanism 25 installed on the sliding door leaf 21 and restricting lateral movement of the sliding door leaf 21 in the door groove 1. The sliding mechanism 24 includes at least two sliding block devices 241 installed on two sides of the upstream surface of the laminated beam type door leaf 21, at least two reverse wheel devices 242 installed on two sides of the downstream surface of the laminated beam type door leaf 21, a main rail 243 pre-embedded on the upstream side of the door slot 1 and a reverse rail 244 pre-embedded on the downstream side of the door slot 1, at least two sliding block devices 241 are matched and connected with the main rail 2431 and slide on the main rail 2431, at least two sliding block devices 241 are used for reducing the friction resistance when the laminated beam type door leaf 21 falls, and the number of the sliding block devices 241 is uniformly set according to the height of the laminated beam type door leaf 21. At least two counter wheel devices 242 are matched with the main working surface 2441 of the counter rail 244 and slide on the main working surface 2441 of the counter rail 244, at least two counter wheel devices 242 are hinged elastic counter wheel devices, at least two counter wheel devices 242 are used for reducing the friction resistance when the stop log type door leaf 21 falls and bearing partial weight of the stop log type door leaf 21, and the number of the counter wheel devices 242 is uniformly configured according to the height of the door leaf. The first side water sealing device 23 is connected with the main working surface 2432 of the main rail 243 in a matching manner, the first side water sealing device 23 is used for sealing the gap on the side surface of the stop log type door leaf 21, and the first side water sealing device 23 is generally a P-shaped water sealing device. Specifically, the main rail 243 is embedded in the concrete on the upstream side of the door slot 1, the counter rail 244 is embedded in the concrete on the downstream side of the door slot 1, the main working surface 2432 of the main rail 243 and the main working surface 2441 of the counter rail 244 are both parallel to the laminated beam type door leaf 21, and the sub working surface 2433 of the main rail 243 and the sub working surface 2442 of the counter rail 244 are both parallel to the water flow direction. The first transverse limiting mechanism 25 comprises at least two first side wheel devices 251 arranged on two sides of the upstream surface of the overlapped beam type door blade 21 and at least two second side wheel devices 252 arranged on two sides of the downstream surface of the overlapped beam type door blade 21; at least two first side wheel devices 251 are matched with the secondary working surface 2433 of the main rail 243, and roll or slide up and down on the secondary working surface 2433 of the main rail 243, and the at least two first side wheel devices 251 are used for reducing the friction resistance when the laminated beam type door leaf 21 falls, and limiting the transverse movement of the laminated beam type door leaf 21 to play a role of guiding. The number of the first side wheel devices 251 is equal and configured according to the height of the stop log door leaf 21; at least two second side wheel devices 252 are matched with the secondary working surface 2442 of the counter rail 244 and roll or slide up and down on the secondary working surface 2442 of the counter rail 244, and the at least two second side wheel devices 252 are used for reducing the friction resistance when the laminated beam type door leaf 21 falls and limiting the transverse movement of the laminated beam type door leaf 21 to play a role of guiding. The number of the second side wheel devices 252 is uniformly arranged according to the height of the stop log gate blade 21. The at least two first side wheel assemblies 251 and the at least two second side wheel assemblies 252 are cantilevered side wheel assemblies.

As shown in fig. 1 to 4 and 9 to 11, the top-exposed arc gate 3 includes an arc gate leaf 31, a second bottom water seal device 32 installed at the bottom of the arc gate leaf 31, second side water seal devices 33 installed at both sides of the upstream surface of the arc gate leaf 31, second transverse limiting mechanisms 34 installed at both sides of the arc gate leaf 31, arc side rails 35 embedded in the side wall concrete of the downstream gate pier 5, an arc gate bottom sill 36 embedded at the downstream side of the weir top of the overflow weir 6 and connected with the second bottom water seal devices 32 in a matching manner, an arm mechanism 37 connected with the arc gate leaf 31, and an arc side water seal seat 38 embedded in the side wall concrete of the upstream gate pier 5 and connected with the second side water seal devices 33 in a matching manner; the water-facing panel of the stop log door leaf 21, the main rail 243 and the counter rail 244 are all arc-shaped, and the radian of the arc-shaped is consistent with that of the panel of the arc-shaped door leaf 31. The top-exposed arc gate 3 moves along the arc-shaped side rail 35, the top parts of the plurality of the girder-like door leaves 21 and the top part of the arc-shaped door leaf 31 are both provided with working surfaces matched with the first bottom water sealing devices 22, when two adjacent girder-like sliding door leaves 2 are overlapped and connected, the top part of the girder-like door leaf 21 positioned below is matched and connected with the first bottom water sealing device positioned at the bottom part of the girder-like door leaf 21 positioned above to enable the two adjacent girder-like sliding door leaves 2 to be overlapped and connected, and the top part of the arc-shaped door leaf 31 is matched and connected with the first bottom water sealing device 22 positioned above the top part of the arc-shaped door leaf 31 to enable the girder-like door leaf 21 to be connected with the top-exposed arc gate 3. The first bottom water seal device 22 is matched with the top of the arc-shaped door leaf 31 or the top of the adjacent stoplog door leaf 21 to seal the bottom gap of the stoplog door leaf 21, and the first bottom water seal device 22 and the second bottom water seal device 32 both adopt flat water seals. The second bottom water seal device 32 is connected with the arc-shaped door sill 36 in a matching manner and is used for sealing the bottom gap of the arc-shaped door leaf 31. The second side water seal device 33 is used for sealing the gap on the side surface of the arc-shaped door leaf 31, the second side water seal device 33 generally adopts a P-shaped water seal, and the range of the arc-shaped side water seal seat 38 is from the arc-shaped door sill 36 to the top of the gate pier 5. The arc-shaped side rails 35 range from the arc-shaped sill 36 to the top of the gate pier 5. The support arm mechanism 37 comprises two support arms 371 and a hinge device 372, one ends of the two support arms 371 all connect with the arc-shaped door leaf 31, the other ends of the two support arms 371 all connect with the hinge device 372, and the hinge device 372 is connected with the base bolt on the side wall of the gate pier 5. The second lateral limiting mechanism 34 is used for limiting the arc-shaped door leaf 31 to move laterally between the arc-shaped side rails 35. The second horizontal limiting mechanism 34 includes at least two third side wheel devices 341 installed at downstream positions on two side surfaces of the arc-shaped door leaf 31, the at least two third side wheel devices 341 are connected with the arc-shaped side rail 35 in a matching manner and roll or slide up and down on the arc-shaped side rail 35, the at least two third side wheel devices 341 are used for limiting the horizontal position of the arc-shaped door leaf 31, and the number of the third side wheel devices 341 is equal and configured according to the height of the arc-shaped door leaf 31.

As shown in fig. 1 and 9, the opening and closing device 4 includes two sets of lifting and lowering driving mechanisms 41 connected to the stop log gate leaves 21 for moving the stop log gate leaves 21 up and down in the gate slot 1, a gate top gate rotating and lifting mechanism 42 connected to the stop log gate leaves for lifting the stop log gate leaves, and a gate opening and closing driving mechanism 43 connected to the gate arc leaves 31 for driving the gate arc leaves 31 to open and close. Lifting lugs 211 are arranged at two ends of the top of the overlapped beam type door leaf 21, the two groups of lifting driving mechanisms 41 comprise a traction mechanism 411 and a fixed pulley device 412, the traction mechanism 411 comprises a first steel wire rope 4111 connected with the lifting lugs 211, two horizontal hoisting tractors 4112 connected with the first steel wire rope 4111 and a first control cabinet 4113 used for controlling the two horizontal hoisting tractors 4112 to work, and the fixed pulley device 412 is located between the lifting lugs 211 and the horizontal hoisting tractors 4112 and used for dragging the first steel wire rope 4111. Horizontal hoist tractor 4112 passes through foundation bolt and installs at gate pier 5 top, fixed pulley gear 412 passes through foundation bolt and installs at gate pier 5 top and be close to the position of gate slot 1, lug 211, first wire rope 4111 and fixed pulley gear 412 keep on a straight line, horizontal hoist tractor 4112 is controlled through first switch board 4113, two horizontal hoist tractors 4112 functioning speed keep unanimous when can realizing that stoplog door leaf 21 falls to the door, also can realize unilateral lift actuating mechanism's control. The dam crest gantry crane rotary lifting mechanism 42 comprises a gantry crane rotary lifting 421 and a second steel wire rope 422 connected with the gantry crane rotary lifting 421, the second steel wire rope 422 is connected with the lifting lug 211 and is used for lifting the stoplog type door leaf 21, and the size of the lifting lug 211 meets the requirement that the lifting lug 211 simultaneously penetrates through the first steel wire rope 4111 and the second steel wire rope 422. When the gantry crane rotary crane 421 hoists the stop log type door leaf 21, the hoisting point of the gantry crane rotary crane 421 is located right above the midpoint of the connecting line of the hole of the door slot 1, and the second steel wire rope 422 penetrates through the lifting lug 211 to keep the stop log type door leaf 21 in a horizontal state. The adopted stop log type door leaf 21 has the characteristics of simple structure, light weight, flexible opening and closing, and capability of being hoisted by matching a gantry crane rotary crane with a small-sized horizontal hoisting tractor. The gate opening and closing driving mechanism 43 is a hydraulic opening and closing mechanism, the hydraulic opening and closing mechanism comprises a hydraulic oil cylinder 431, a high-pressure oil pipe 432, a hydraulic pump station 433 and a second control cabinet 434 for controlling the hydraulic pump station 433, one end of the hydraulic oil cylinder 431 is connected with the arc-shaped door leaf 31, the other end of the hydraulic oil cylinder 431 is connected with an oil cylinder support hinged support 435 arranged on the side surface of the gate pier 5, one end of the high-pressure oil pipe 432 is connected with the hydraulic oil cylinder 431, and the other end of the high-pressure oil pipe 432 is connected with the hydraulic pump station 433; the high-pressure oil pipe 432 is fixed on the wall at the side of the gate pier 5. The hydraulic pump station 433 and the second control cabinet 434 are both installed in a pump station room at the top of the gate pier 5, the hydraulic pump station 433 is controlled by the second control cabinet 434, the hydraulic pump station 433 delivers operating oil to the hydraulic oil cylinder 431 through the high-pressure oil pipe 432, and the opening degree of the arc-shaped door leaf 31 is controlled by controlling the expansion and contraction of a hydraulic piston rod on the hydraulic oil cylinder 431.

According to the top-exposed arc gate system provided with the stop log type anti-flood sliding gate leaf, which is disclosed by the embodiment of the invention, the stop log type gate leaf is timely dropped to block water when the gate top floods water by configuring the plurality of stop log type sliding gate leaves, so that the top-exposed arc working gate can be successfully opened when the floodwater appears, the downward discharge flow of a reservoir is timely increased, the further expansion of accidents is avoided, and an emergency risk avoiding effect is realized; the exposed-top arc gate system provided with the stoplog type sliding gate blade has small workload for technically modifying the built power station, and after the stoplog type gate blade is configured, only the gate slot above the gate top of the working gate needs to be increased, the original design size of the working gate is not changed, the design opening and closing force of a hydraulic hoist is not increased or slightly increased, and the manpower, financial resources and material resources are saved; the open-top arc gate system provided with the stoplog type flood prevention sliding door leaf can greatly improve the safe operation reliability of the dam by configuring the stoplog type flood prevention sliding door leaf and the opening and closing device as matched emergency measures of the working gate, has wide application range, and has more obvious effects on power stations with small storage capacity and large flood season flow, earth and rockfill dam power stations and the like.

On the other hand, the embodiment of the invention also provides a method for opening and closing the exposed top arc gate provided with the stoplog type anti-flood sliding gate leaf, which comprises the following steps:

s1, a drop-stop type sliding door leaf: firstly, respectively installing 1 fixed pulley and 1 horizontal hoisting tractor on gate piers on two sides of a corresponding gate hole through a pre-embedded bolt foundation, wherein the horizontal hoisting tractor can be transported by tools such as a gate machine on the top of a dam or a hydraulic trolley, and the head of a first steel wire rope of the horizontal hoisting tractor is placed at the position of a gate notch after being dragged by a fixed pulley device; then, hoisting a single stop log type sliding door leaf from the door storage position to the door notch position by using a gantry crane rotary crane, gradually putting the stop log type sliding door leaf into a door groove, connecting a rope head of a first steel wire rope with a lifting lug when the lifting lug is lower than a fixed pulley device, starting two horizontal hoisting tractors to stress the first steel wire rope, and then unloading the gantry crane rotary crane and dismantling a second steel wire rope; and finally, gradually lowering the two horizontal hoisting tractors to the top of the exposed arc gate by means of the dead weight of the stop-log type sliding gate leaves by synchronously starting the two horizontal hoisting tractors. If the water retaining height of the single section of the stop log type sliding door leaf is not enough, the operation is repeated, the 2 nd section of the stop log type sliding door leaf is placed, and two lifting driving mechanisms are required to be added when the 2 nd section of the stop log type sliding door leaf is placed.

S2, lifting the arc gate with the exposed top: when the total height of the exposed top arc gate and the stop log type sliding door leaf positioned at the upper part of the exposed top arc gate is higher than the reservoir water level, and the arc door leaf has no water overflow or water leakage, the gate opening and closing driving mechanism is started to carry out the door opening operation. And observing the working pressure of the hydraulic opening and closing mechanism and the operation condition of the stop log type sliding door leaf in the door lifting process, and timely inching and operating the horizontal winch tractor to recover the first steel wire rope to prevent the arc-shaped exposed top gate from being jammed in the operation process. And when the top of the arc-shaped exposed gate door is exposed out of the water surface and reaches a certain safe height or the top of the top stop-log type sliding door leaf reaches the door notch, closing the gate opening and closing driving mechanism.

S3, lifting the stoplog type sliding door leaf: when the arc-shaped gate with the exposed top is lifted to a certain height, the lifting stop-stitch type sliding door leaf of the horizontal hoisting tractor is synchronously started, and when the lifting lug of the stop-stitch type sliding door leaf is exposed out of the door slot, the horizontal hoisting tractor is stopped; and (4) penetrating a second steel wire rope at the lifting lug, and lifting the stop log door leaf by using a gantry crane in a rotating way while removing the first steel wire rope. And then the gantry crane is used for hoisting the stoplog type sliding door leaf to the next hole gate or storage door. And removing the rest of the stoplog type sliding door leaf by the same method.

S4, lifting the arc-shaped exposed top gate to a set opening degree: and after the stop log type sliding door leaves are all lifted out, the radial gate is restored to a normal state, and the gate opening and closing driving mechanism is started to open the radial gate to a set opening degree according to the dispatching requirement.

And when the water level of the reservoir is normal, the arc-shaped gate with the exposed top is operated and controlled by the hydraulic opening and closing mechanism, and the arc-shaped gate with the exposed top can be opened and closed at different set openings within the designed opening range according to the production operation requirement.

When abnormal conditions occur, the water level of a reservoir rises and the top of the exposed arc-shaped gate is flooded, the stop log type anti-flooding sliding door leaf is lowered to the top of the working gate, the water retaining height is increased, different numbers of stop log type sliding door leaves are lowered according to the flooding height, and the gate is lifted up through a hydraulic opening and closing mechanism after flooding of the top of the exposed arc-shaped gate is eliminated; after the door is successfully lifted, and after the top of the arc-shaped gate with the exposed top is higher than the water surface by a certain height, the stop-log type sliding door leaf is lifted out of the gate slot by matching the horizontal hoisting tractor and the gate machine rotating crane on the top of the dam, and the arc-shaped gate with the exposed top is restored to normal working condition operation.

The exposed-top arc gate system provided with the stoplog type anti-flood sliding gate leaf can be used for lowering the stoplog type sliding gate leaf along a newly designed gate slot by matching the dam-top gantry crane rotary crane and the horizontal winch tractor in the early flooding stage of the exposed-top arc gate, increasing the water retaining height of the gate, opening the gate by the gate opening and closing driving mechanism after flooding is eliminated, improving the success rate of lifting the gate and reducing the possibility of flooding the exposed-top arc gate after flooding. When the arc-shaped exposed top gate is opened successfully and the original gate top is exposed out of the water surface for a certain height, the stop log type gate leaf is lifted by the horizontal hoisting tractor and the gantry crane rotary crane, and finally the arc-shaped exposed top gate is opened to a full-open position, so that the arc-shaped exposed top gate can be opened successfully when overflowing occurs, the downward discharge flow of a reservoir is increased in time, the accident is prevented from being further expanded, and an emergency risk avoiding effect is achieved; the gate system provided with the stop log type sliding gate leaves can be matched with a plurality of working gates of the same type by arranging a plurality of stop log type sliding gate leaves and a gate opening and closing driving mechanism, and the manufacturing cost is low.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are still within the scope of the technical solution of the present invention.

Claims (7)

1. The utility model provides a configuration stoplog formula prevents flood sliding door leaf's open top arc gate system which characterized in that: it includes:

the gate slots are arranged at gate piers at two sides of the open-top arc gate;

a plurality of stop-motion sliding door leaves installed in the door slot in a vertically stacked manner and slidable in the door slot, each stop-motion sliding door leaf comprising a stop-motion door leaf, a first bottom water seal device installed at the bottom of the stop-motion door leaf, first side water seal devices installed on both sides of the upstream surface of the stop-motion door leaf, a sliding mechanism installed on the stop-motion door leaf and sliding the stop-motion door leaf in the door slot, and a first lateral limiting mechanism installed on the stop-motion door leaf and limiting the stop-motion door leaf from moving laterally in the door slot; the sliding mechanism comprises at least two sliding block devices arranged on two sides of the upstream surface of the stop log door leaf, at least two reverse wheel devices arranged on two sides of the downstream surface of the stop log door leaf, a main rail pre-embedded on the upstream side of the door slot and a reverse rail pre-embedded on the downstream side of the door slot; at least two sliding block devices are matched and connected with the main rail and slide up and down on the main rail; at least two reverse wheel devices are matched and connected with the reverse rail main working surface and slide up and down or roll up and down on the reverse rail main working surface; the first side water seal device is connected with the main working surface of the main rail in a matching way; the main working surface of the main rail and the main working surface of the reverse rail are both parallel to the stop log type door leaf; the secondary working surface of the main rail and the secondary working surface of the reverse rail are both parallel to the water flow direction; the water-facing panel, the main rail and the counter rail of the stoplog type door leaf are all arc-shaped, and the radian of the arc-shaped is consistent with that of the arc-shaped door leaf;

the top-exposed arc gate comprises arc gate leaves and arc side rails pre-embedded on the side edges of a downstream gate pier and moves along the arc side rails, the top of each of the stop log gate leaves and the top of each of the arc gate leaves are provided with working surfaces matched with the first bottom water sealing devices, when two adjacent stop log gate leaves are overlapped and connected, the top of the stop log gate leaf positioned below is matched and connected with the first bottom water sealing device positioned at the bottom of the stop log gate leaf positioned above so that two adjacent stop log gate leaves are overlapped and connected, and the top of each of the arc gate leaves is matched and connected with the first bottom water sealing device positioned above the top of the arc gate leaf so that the stop log gate leaf is connected with the top-exposed arc gate; the top-exposed arc gate further comprises a second bottom water seal device arranged at the bottom of the arc gate blade, second side water seal devices arranged at two sides of the upstream surface of the arc gate blade, side water seal seats which are pre-embedded in the concrete of the pier side wall of the upstream side gate and are in matched connection with the second side water seal devices, a second transverse limiting mechanism which is arranged on the arc gate blade and is used for limiting the arc gate blade to transversely move between the arc side rails, a bottom sill which is pre-embedded on the downstream side of the weir top of the overflow weir and is in matched connection with the second bottom water seal devices, and a support arm mechanism which is connected with the arc gate blade;

the opening and closing device comprises two lifting driving mechanisms which are respectively connected with the stop log type door leaves and enable the stop log type door leaves to move up and down in the door slots, a dam top gantry crane rotary lifting mechanism which is connected with the stop log type door leaves and used for lifting and placing the stop log type door leaves, and an arc gate opening and closing driving mechanism which is connected with the arc door leaves and used for driving the arc door leaves to open and close.

2. The open-top, arcuate-shaped gate system with a cross-over, spill-proof sliding door leaf as claimed in claim 1,

the first transverse limiting mechanism comprises at least two first side wheel devices arranged on two sides of the upstream surface of the stop log door leaf and at least two second side wheel devices arranged on two sides of the downstream surface of the stop log door leaf; at least two first side wheel devices are matched and connected with the primary rail secondary working surface and slide up and down or roll up and down on the primary rail secondary working surface; and at least two second side wheel devices are matched and connected with the counterrail secondary working surface and slide up and down or roll up and down on the counterrail secondary working surface.

3. The open-topped arc-shaped shutter system with a cross-member type anti-flooding sliding door leaf according to claim 1,

the second transverse limiting mechanism comprises at least two third side wheel devices which are arranged at positions, close to the downstream, of two side faces of the arc-shaped door leaf, and the at least two third side wheel devices are connected with the arc-shaped side rails in a matched mode and slide or roll up and down on the arc-shaped side rails.

4. The open-top, arcuate-shaped gate system with a cross-over, spill-proof sliding door leaf as claimed in claim 1,

the support arm mechanism comprises two support arms and a support hinge device, one ends of the two support arms are connected with the arc-shaped door leaf, the other ends of the two support arms are connected with the support hinge device, and the support hinge device is connected with foundation bolts on the side wall of the gate pier.

5. The open-top, arcuate-shaped gate system with a cross-over, spill-proof sliding door leaf as claimed in claim 1,

lifting lugs are arranged at two ends of the top of the stop log type door leaf;

the two lifting driving mechanisms comprise a traction mechanism and a fixed pulley device;

the traction mechanism comprises a first steel wire rope connected with the lifting lug, a horizontal hoisting tractor connected with the first steel wire rope and a first control cabinet used for controlling the horizontal hoisting tractor to work; the fixed pulley device is positioned between the lifting lug and the horizontal hoisting traction machine and is used for dragging the first steel wire rope.

6. The open-top, arcuate-shaped gate system with a cross-over, spill-proof sliding door leaf as claimed in claim 1,

the gate opening and closing driving mechanism comprises a hydraulic oil cylinder, a high-pressure oil pipe, a hydraulic pump station and a second control cabinet for controlling the hydraulic pump station, one end of the hydraulic oil cylinder is connected with the arc-shaped door leaf, the other end of the hydraulic oil cylinder is connected with an oil cylinder support hinge seat, one end of the high-pressure oil pipe is connected with the hydraulic oil cylinder, and the other end of the high-pressure oil pipe is connected with the hydraulic pump station;

the hydraulic pump station conveys operating oil sources to the hydraulic oil cylinder through a high-pressure oil pipe, and the opening degree of the top-exposed arc gate is controlled by controlling the extension and retraction of a hydraulic piston rod on the hydraulic oil cylinder.

7. A method of opening and closing a gate using the open-topped arc type gate system with a cross-member type anti-flooding sliding door leaf of claims 1 to 6, comprising the steps of:

s1, a drop-stop type sliding door leaf: hoisting and conveying a single-section stoplog type sliding door leaf to a door slot opening position by using a dam top door machine rotary hoisting mechanism, gradually putting the stoplog type sliding door leaf into the door slot, connecting a rope head of a first steel wire rope with a lifting lug when the lifting lug is lower than a fixed pulley device, starting two horizontal hoisting tractors to stress the first steel wire rope, and then removing the force of the dam top door machine rotary hoisting mechanism; finally, two horizontal hoisting tractors are synchronously started, the stop log type sliding door leaf is gradually lowered to the top of the exposed arc gate by means of the dead weight of the stop log type sliding door leaf, if the water retaining height of a single stop log type sliding door leaf is not enough, the operations are repeated, and the lowering of the 2 nd stop log type sliding door leaf is carried out;

s2, lifting the arc gate with the exposed top: when the total height of the exposed top arc gate and the upper stop log type sliding door leaf is higher than the reservoir water level and the arc door leaf has no water overflow or water leakage, starting the gate opening and closing driving mechanism to perform the door opening operation of the exposed top arc gate, and stopping running the gate opening and closing driving mechanism when the top of the exposed top arc gate is exposed out of the water level and reaches a certain safe height or the top of the topmost stop log type sliding door leaf reaches the door notch;

s3, lifting the stop log type sliding door leaf: when the top-exposed arc gate is lifted to a certain height, synchronously starting a horizontal hoisting tractor to lift the stop-stitch type sliding door leaf, and stopping the horizontal hoisting tractor when the stop-stitch type door leaf lifting lug is exposed out of the door slot; connecting the lifting lug with a dam crest portal crane rotary lifting mechanism, lifting the stop log type sliding door leaf by using the dam crest portal crane rotary lifting mechanism, and removing a first steel wire rope;

s4, lifting the arc-shaped exposed top gate to a set opening degree: and after the stop log type sliding door leaves are all hung out, the arc-shaped open-top gate is restored to a normal state, and the gate opening and closing driving mechanism is started to open the arc-shaped open-top gate to a set opening degree according to the scheduling requirement.

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