Gate structure suitable for temporary diversion

Abstract

The utility model provides a gate structure suitable for temporary diversion, which comprises a diversion building water inlet, a gate structure, a power structure and a counterweight structure, the gate structure is arranged on the inner side of the upstream of the diversion building water inlet, and the power structure is arranged on the outer side of the diversion building water inlet. The output end of the power structure is connected to a main beam of the gate structure, and the balance weight structure is arranged above the gate structure, so that the power structure can pull up a door plate of the gate structure conveniently. The gate structure is arranged at the water inlet of the built diversion tunnel, the short pipeline is used for pumping water to the water inlet of the diversion tunnel through the submersible pump, the diversion tunnel is used for temporarily draining water to the downstream, the length of the diversion pipeline can be shortened in detail, meanwhile, the lifting range of the submersible pump is reduced, and the water pumping efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of water conservancy and hydropower engineering construction, and specifically relates to a gate structure suitable for temporary diversion. Background Art

[0002] When building a river-blocking reservoir, temporary cofferdams and diversion structures are required. If the water inlet of the diversion structure is high, after the diversion structure is built, there will be water accumulation upstream during the construction of the cofferdam, and the cofferdam is often difficult to complete quickly, which has a certain impact on the quality of the cofferdam project. It is often necessary to cooperate with submersible pumps to pressurize the upstream water to bypass the construction cofferdam and pump it to the downstream. At the same time, after the cofferdam is built, lowering the upstream water level can also make full use of the upstream cofferdam reservoir to adjust the flood, reduce the scale of the diversion structure and the elevation of the cofferdam. The traditional method is to use a submersible pump to lengthen the pipe and set the outlet directly below the downstream cofferdam. The pipeline is long, the rise is large, and the cost is high.

[0003] The invention patent with publication (announcement) number CN106836153 discloses a method and device for discharging ecological flow using an existing blocking gate. The invention is to respectively arrange ecological spill holes on both sides of the lower part of the existing blocking gate, and arrange a steel gate groove corresponding to the position of the ecological spill hole on the upstream side of the ecological spill hole, and the steel gate groove is welded to the upstream surface of the blocking gate to form an integral structure; an ecological gate is arranged in the steel gate groove, and the upper part of the ecological gate is connected to the hydraulic cylinder through a pull rod; the upper part of the hydraulic cylinder is hinged to the cantilever support at the top of the upstream side of the blocking gate; before the power station starts to store water, the ecological gate on the upstream side of the ecological spill hole is in a closed state, and after the blocking gate of the diversion tunnel is closed, the ecological gate on the upstream side of the ecological spill hole is opened by the hydraulic cylinder to discharge the ecological flow, and the ecological gate is closed after the permanent drainage channel on the upper level of the power station flows. This plan does not require the establishment of branch tunnels next to the diversion tunnel. The procedures for lowering the gate to seal and release ecological flow are simple, saving investment and effectively shortening the construction and sealing period.

[0004] The invention patent with the publication (announcement) number CN108316259A discloses a diversion tunnel single temporary plugging joint gate closing plugging arrangement and method, which includes a diversion tunnel group composed of multiple diversion tunnels, the diversion tunnel group is closed in two batches, the diversion tunnels in the first batch of closing gates include the diversion tunnel inlet section and the diversion tunnel body; a low-head plugging gate is arranged at the diversion tunnel inlet section, a water intake tower is arranged at the diversion tunnel inlet section, and a small-capacity hoist is installed on the top of the water intake tower; a temporary plugging is arranged at the upstream section of the diversion tunnel body, and a permanent plugging is arranged on the downstream side of the temporary plugging. This scheme overcomes the shortcomings of the prior art that the diversion tunnel plugging gate has a high water head, a large hoist capacity, and a large engineering investment.

[0005] Although the above existing technologies have made certain improvements to the diversion tunnel plugging gate, they have not taken into account the following problems: for high-dam and large-reservoir hydropower projects in narrow river valleys, a multi-layer diversion tunnel plugging gate arrangement is usually adopted. The height between the lower diversion tunnel and the adjacent upper diversion tunnel is relatively large, and the operating head of the arc gate is high, some of which are more than 70m. The arc gate vibrates strongly, and sometimes the gate cannot be closed and cannot be handled, resulting in the failure of the entire lowering of the gate, and the risk of recovering the opening and closing equipment of the arc gate is very high; in addition, the water level in the narrow valley rises after the arc gate is closed. The rising speed is fast. When the construction plug has not reached sufficient strength, the radial gate has a high pressure head, some of which are more than 130m. If a conventional pre-compression water seal is used, the water seal device will leak seriously due to excessive pre-compression, which will bring difficulties to the subsequent construction and plugging. If a pressurized water stop or eccentric hinge water stop device under the action of extra-high water head is used, the gate needs to adopt a sudden expansion and sudden drop gate groove, and the gate leaf needs to be enlarged. For the eccentric hinge water stop type radial gate, a hydraulic press must be added, which increases investment a lot and has poor economy. Therefore, the existing technology is still not perfect and needs to be further improved. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a gate structure suitable for temporary diversion.

[0007] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0008] A gate structure suitable for temporary diversion includes a water inlet of a diversion building, a gate structure, a power structure, and a counterweight structure. The gate structure is arranged on the inner side of the upstream water inlet of the diversion building, the power structure is arranged on the outer side of the water inlet of the diversion building, and the output end of the power structure is connected to the main beam of the gate structure. The counterweight structure is arranged above the gate structure to facilitate the power structure to pull up the door plate of the gate structure.

[0009] As a further optimization of the present utility model, the gate structure includes a fixed axis, a main beam, a connecting beam and a door plate, the fixed axis is located above the inner wall of the water inlet of the diversion building, and the two ends of the fixed axis are respectively fixed to the inner walls on the left and right sides of the water inlet of the diversion building; two main beams are provided, the two main beams are symmetrically arranged about the central axis of the gate structure, and are respectively hinged to the fixed axis through bearings; a number of connecting beams are provided, and the several connecting beams and the two main beams form a rectangular frame structure; the door plate corresponds to the rectangular frame structure for water blocking, the two ends of the door plate are respectively fixedly connected to the two main beams, and the middle part of the door plate is fixedly connected to the connecting beam.

[0010] As a further optimization of the utility model, a plurality of support beams arranged at intervals from top to bottom are arranged between the two main beams.

[0011] As a further optimization of the utility model, a counterweight structure is provided on the top of the two main beams.

[0012] Preferably, the fixed shaft is a hollow cylindrical shape with an outer diameter not less than 100 mm.

[0013] Preferably, the main beam is arranged to be inclined downstream, and the inclination angle is not less than 15°.

[0014] Preferably, the main beam is a hollow square with a side length of not less than 150 mm and a thickness of not less than 10 mm.

[0015] As a further optimization of the present invention, the power structure includes a buoy, a force transmission rod, a fixed frame and a traction rope. The buoy is arranged on the outside of the water inlet of the diversion building, one end of the force transmission rod is fixedly connected to the buoy, and the other end of the force transmission rod extends upward in the vertical direction and then bends toward the inside of the water inlet of the diversion building; there are multiple fixed frames, and the multiple fixed frames are spaced apart on the force transmission rod, and each fixed frame is fixedly connected to the outer wall of the water inlet of the diversion building; the traction rope provides tension for the gate structure, one end of the traction rope is connected to the force transmission rod, and the other end of the traction rope is connected to the bottom of the main beam of the gate structure.

[0016] Preferably, the buoy is a hollow cylinder made of PVC board with a thickness of not less than 5 mm, a cylinder diameter of not less than 0.6 m, and a height of not less than 0.8 m.

[0017] Preferably, the force transmission rod is a hollow tube with an outer diameter of not less than 30 mm and a thickness of not less than 2 mm.

[0018] Preferably, the thickness of the fixing frame is not less than 3 mm.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The utility model uses a gate structure to be set at the water inlet of the built diversion tunnel, uses a submersible pump to pump water to the water inlet of the diversion tunnel through a shortened pipeline, and uses the diversion tunnel to temporarily drain water downstream, which can significantly shorten the length of the diversion pipeline and reduce the head of the submersible pump to improve the pumping efficiency.

[0021] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other design solutions and drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a plan view of the gate structure suitable for temporary diversion described in the utility model.

[0024] Figure 2 It is a side view of the gate structure of the utility model in a gate closed state.

[0025] Figure 3 It is a cross-sectional view of the gate of the gate structure of the utility model when the gate is closed.

[0026] Figure 4 It is a side view of the gate structure of the utility model in the gate open state.

[0027] Figure 5 It is a cross-sectional view of the gate structure of the utility model when the gate is opened.

[0028] Description of reference numerals:

[0029] 1. Water inlet of diversion building;

[0030] 2. Gate structure;

[0031] 201, fixed axis; 202, main beam; 203, connecting beam; 204, door panel;

[0032] 3. Power structure;

[0033] 301, buoy; 302, force transmission rod; 303, fixed frame; 304, traction rope;

[0034] 4. Counterweight structure;

[0035] 5. Support beam.

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. DETAILED DESCRIPTION

[0037] The content of the present invention can be further understood in conjunction with the following detailed description of the preferred implementation method of the present invention and the included embodiments. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as those generally understood by ordinary technicians in the field to which the present invention belongs. If the definition of a specific term disclosed in the prior art is inconsistent with any definition provided in the present invention, the definition of the term provided in the present invention shall prevail.

[0038] In the description of the present invention, it should be understood that the terms "center", "up", "down", "vertical", "left", "right", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0039] In a typical implementation of this application, please refer to Figure 1 A gate structure suitable for temporary diversion includes a water inlet 1 of a diversion building, a gate structure 2, a power structure 3, and a counterweight structure 4. The gate structure 2 is arranged on the inner side of the water inlet 1 of the diversion building upstream, the power structure 3 is arranged on the outer side of the water inlet 1 of the diversion building, and the output end of the power structure 3 is connected to the main beam 202 of the gate structure 2. The counterweight structure 4 is arranged above the gate structure 2 to facilitate the power structure 3 to pull up the door plate 204 of the gate structure 2.

[0040] In the utility model, the water inlet 1 of the diversion structure is a rectangular open channel structure, preferably a reinforced concrete structure with a strength not less than C25.

[0041] In a further preferred embodiment, see Figure 2 , Figure 3 and Figure 4 The gate structure 2 includes a fixed axis 201, a main beam 202, a connecting beam 203 and a door plate 204. The fixed axis 201 is located above the inner wall of the water inlet 1 of the diversion building, and the two ends of the fixed axis 201 are respectively fixed to the inner walls on the left and right sides of the water inlet 1 of the diversion building; two main beams 202 are provided, and the two main beams 202 are symmetrically arranged about the central axis of the gate structure 2, and are respectively hinged to the fixed axis 201 through bearings; refer to Figure 1 and Figure 2 The connecting beams 203 are provided with a plurality of connecting beams 203, and the plurality of connecting beams 203 and the two main beams 202 together form a rectangular frame structure; the door panel 204 corresponds to the rectangular frame structure and is used to block water. The two ends of the door panel 204 are respectively fixedly connected to the two main beams 202, and the middle part of the door panel 204 is fixedly connected to the connecting beam 203.

[0042] As a further optimization of the present invention, please refer to Figure 3 and Figure 5 A plurality of support beams 5 are arranged between the two main beams 202 and spaced apart from top to bottom.

[0043] On the basis of the above embodiments, the present invention also preferably provides the following improvements:

[0044] The fixed axis 201, the rotation axis of the gate structure 2, is located above the inner wall of the water inlet 1 of the diversion structure. The fixed axis 201 is preferably a hollow cylinder with an outer diameter of not less than 100 mm, mainly made of steel, and a pipe thickness of not less than 10 mm. Figure 3 The two ends of the fixed axis 201 are preferably fixedly connected to the inner walls on the left and right sides of the water inlet 1 of the diversion structure through rivets.

[0045] The main beam 202 is the main frame structure of the gate. Two main beams 202 are arranged symmetrically. Figure 2 The main beam 202 is tilted downstream, and the tilt angle is not less than 15°. Further, the main beam 202 is hinged to the fixed shaft 201 by a bearing, and the main beam 202 is preferably a hollow square with a side length of not less than 150 mm, mainly made of steel, and the thickness of the pipe is not less than 10 mm.

[0046] There are multiple connecting beams 203, and multiple connecting beams 203 and the main beam 202 form a frame structure. The distance between adjacent connecting beams is no more than 50cm, and they are welded with the main beam to form a main body. The connecting beam 203 is preferably a hollow cylindrical shape with an outer diameter of no less than 50mm, mainly made of steel, and the thickness of the pipe is no less than 5mm.

[0047] The door panel 204 is a main water retaining structure, which is welded and fixed to the main beam 202 and the connecting beam 203. The material is a steel plate with a thickness of not less than 5 mm.

[0048] As a further optimization of the present invention, refer to Figure 2 , Figure 4 and Figure 5The power structure 3 is a hydraulic power and does not require consumption of energy such as electricity. Specifically, the power structure includes a buoy 301, a force transmission rod 302, a fixed frame 303 and a traction rope 304. The buoy 301 is arranged on the outside of the water inlet 1 of the diversion building, one end of the force transmission rod 302 is fixedly connected to the buoy 301, and the other end of the force transmission rod 302 extends upward in the vertical direction and then bends to the inside of the water inlet 1 of the diversion building; there are multiple fixed frames 303, and multiple fixed frames 303 are spaced on the force transmission rod 302, and each fixed frame 303 is fixedly connected to the outer wall of the water inlet 1 of the diversion building; the traction rope 304 provides tension for the gate structure 2, one end of the traction rope 304 is connected to the force transmission rod 302, and the other end of the traction rope 304 is connected to the bottom of the main beam 202 close to the power structure 3.

[0049] On the basis of the above embodiments, the present invention also preferably provides the following improvements:

[0050] Reference Figure 5 The buoy 301 is the main power device, which uses the buoyancy of water to generate power and is arranged outside the water inlet 1 of the diversion building. The buoy 301 is a hollow cylinder made of PVC board with a thickness of not less than 5mm, a cylinder diameter of not less than 0.6m, and a height of not less than 0.8m. It is airtight and watertight.

[0051] The dowel rod 302 is arranged directly above the buoy 301 and is L-shaped. The bottom of the dowel rod 302 is fixedly connected to the buoy 301 by screws, and hot melt adhesive is applied at the connection to prevent the buoy from being damaged. The top of the dowel rod 302 is bent toward the inside of the water inlet 1 of the guide building. Furthermore, the dowel rod is preferably a hollow tube with an outer diameter of not less than 30 mm, mainly made of steel, and a tube thickness of not less than 2 mm.

[0052] The fixing frame 303 is mainly used to limit the movement direction of the power structure 3, allowing only vertical movement. It is mainly composed of at least one pair of hollow barrels, which are arranged at intervals along the vertical direction of the force transmission rod 302. The inner diameter of the hollow barrel is slightly larger than the outer diameter of the force transmission rod 302. The hollow barrel is fixedly connected to the outer wall of the water inlet 1 of the diversion building by rivets. The main material is steel, and the thickness of the pipe is not less than 3mm.

[0053] The traction rope 304 provides tension for the gate structure 2, connects the top of the force transmission rod 302 and the bottom of the main beam 202, and is made of steel wire rope with a diameter of not less than 5 mm.

[0054] In the present invention, the purpose of setting the counterweight structure 4 is to balance the gate structure. Specifically, referring to Figure 5 , a counterweight structure 4 is arranged above the two main beams 202, and the two counterweight structures 4 are symmetrically arranged to facilitate the power structure 3 to pull up the gate. In order to reduce investment, concrete blocks are used.

[0055] In actual use, when the water level in the reservoir is low, the gate (i.e., the gate plate 204) is in a closed state, and the water pump directly pumps water into the downstream of the water inlet 1 of the diversion building, and flows downstream from the diversion hole; when a sudden flood occurs in the reservoir, the reservoir water level rises, and the buoy 301 moves upward due to the buoyancy, driving the stretching upward movement, so that the gate is opened and the flood during the construction period is discharged. There is no need to manually open the gate to discharge the flood. After the flood passes, the water level drops, the gate is closed, and the water pump continues to pump water to lower the temporary water level of the reservoir, leaving temporary flood control storage capacity for the next flood.

[0056] The above technical solution not only solves the problems of high head height of submersible pump and long pipeline length during diversion, but also leaves temporary flood control storage capacity to reduce flood peak during construction, reduces the scale of diversion tunnel and cofferdam, and further saves the investment of the whole project.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A gate structure suitable for temporary diversion, characterized in that: The invention comprises a water inlet (1) of a diversion structure, a gate structure (2), a power structure (3), and a counterweight structure (4), wherein the gate structure (2) is arranged on the inner side of the upstream of the water inlet (1) of the diversion structure, the power structure (3) is arranged on the outer side of the water inlet (1) of the diversion structure, and the output end of the power structure (3) is connected to the main beam (202) of the gate structure (2), and the counterweight structure (4) is arranged above the gate structure (2) to facilitate the power structure (3) to pull up the door plate (204) of the gate structure (2).

2. The gate structure suitable for temporary diversion according to claim 1, characterized in that: The gate structure (2) comprises a fixed axis (201), a main beam (202), a connecting beam (203) and a door panel (204); the fixed axis (201) is located above the inner wall of the water inlet (1) of the diversion structure, and the two ends of the fixed axis (201) are respectively fixed to the inner walls on the left and right sides of the water inlet (1) of the diversion structure; two main beams (202) are provided, and the two main beams (202) are symmetrically arranged about the central axis of the gate structure (2) and are respectively hinged to the fixed axis (201) through bearings; a plurality of connecting beams (203) are provided, and the plurality of connecting beams (203) and the two main beams (202) are combined to form a rectangular frame structure; the door panel (204) corresponds to the rectangular frame structure and is used for water blocking, and the two ends of the door panel (204) are respectively fixedly connected to the two main beams (202), and the middle of the door panel (204) is fixedly connected to the connecting beam (203).

3. The gate structure suitable for temporary diversion as claimed in claim 2, characterized in that: A plurality of support beams (5) arranged at intervals from top to bottom are arranged between the two main beams (202).

4. The gate structure suitable for temporary diversion as claimed in claim 2, characterized in that: A counterweight structure (4) is provided on the top of each of the two main beams (202).

5. The gate structure suitable for temporary diversion as claimed in claim 2, characterized in that: The main beam (202) is arranged to be inclined downstream, and the inclination angle is not less than 15°.

6. The gate structure suitable for temporary diversion as claimed in claim 2, characterized in that: The fixed shaft (201) is in the shape of a hollow cylinder, with an outer diameter of not less than 100 mm.

7. The gate structure suitable for temporary diversion according to claim 2, characterized in that: The main beam (202) is a hollow square with a side length of not less than 150 mm and a thickness of not less than 10 mm.

8. The gate structure suitable for temporary diversion as claimed in claim 2, characterized in that: The power structure (3) comprises a buoy (301), a force transmission rod (302), a fixing frame (303) and a traction rope (304); the buoy (301) is arranged outside the water inlet (1) of the diversion structure; one end of the force transmission rod (302) is fixedly connected to the buoy (301); the other end of the force transmission rod (302) extends upward in a vertical direction and then bends inside the water inlet (1) of the diversion structure; a plurality of fixing frames (303) are provided, the plurality of fixing frames (303) are sleeved on the force transmission rod (302) at intervals, and each fixing frame (303) is fixedly connected to the outer wall of the water inlet (1) of the diversion structure; the traction rope (304) provides tension for the gate structure (2); one end of the traction rope (304) is connected to the force transmission rod (302), and the other end of the traction rope (304) is connected to the bottom of the main beam (202) close to one side of the power structure (3).

9. The gate structure suitable for temporary diversion according to claim 8, characterized in that: The buoy (301) is a hollow cylinder made of PVC board with a thickness of not less than 5 mm, a cylinder diameter of not less than 0.6 m, and a height of not less than 0.8 m.

10. The gate structure suitable for temporary diversion according to claim 8, characterized in that: The force transmission rod (302) is a hollow tube with an outer diameter of not less than 30 mm, and a thickness of not less than 2 mm.

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