Details
The bed type flap gate is suitable for projects such as hydropower, municipal construction, water supply and drainage, aquaculture, agricultural water conservancy construction, tourism development, etc.
Common barrages include traditional hoisting gate, flap gate and rubber dam relying on winch. However, at present, all the water retaining gates are facing the test of various natural environmental factors in the river and the garbage and waste caused by human production and life. The gates are often stuck in operation, resulting in water leakage and damage to the gates. It is difficult to repair and maintain the gates. These gates have the following shortcomings:
1. The design and layout of the traditional hoist lifting gate is complicated, and the requirements for the dam are extremely high. The corresponding hoist installation platform needs to be built, which has high investment costs and long construction and installation cycle.
2. The flap gate is a popular water retaining gate at present. After the impact of water flow, garbage and various floating objects (such as branches, water plants, various domestic garbage, etc.) in the river channel are easy to be stuck when passing the flap gate, causing water leakage or damage when the gate returns; The opening of this type of gate is about 80 degrees when it is fully opened, which still has a certain water blocking capacity, affecting the discharge capacity of the gate. Moreover, the flap gate is limited by the structural proportion and counterweight, so it can not be manufactured if it is too high or too large.
3. The rubber dam needs to be filled with water when storing water and pumped when discharging water, which takes a long time in the whole process of storing and discharging water; When the rubber dam is used for flood discharge, it is easy to cause rubber abrasion by hitting the dam surface; When branches and wooden piles in the river pass through the rubber dam, they are easy to pierce the rubber dam, which seriously affects the operation of the rubber dam; In addition, the rubber itself is easy to age, which greatly shortens the service life of rubber dams.
The horizontal bed flap gate is realized through the following technical scheme: including the door plate, which is set on the concrete dam foundation through the hinge seat of the door plate, the door plate is movably connected to the hydraulic cylinder through the cylinder connecting shaft, the hydraulic cylinder is fixed on the concrete dam foundation through the cylinder hinge seat, the hydraulic cylinder can rotate between the hydraulic cylinder and the cylinder hinge seat, and the hydraulic cylinder is connected to the hydraulic control device through the hydraulic oil pipe, The hydraulic control device is connected with the remote control equipment. The door panel and the hydraulic oil cylinder form a triangular support structure. The bottom of the door panel is installed with bottom water stop rubber.
The horizontal bed flap gate has the following advantages:
1. Low construction cost
The bed type flap gate only needs to build the dam foundation, without the need to build the relevant placement platform, and does not need to build the isolation pier between the gate and the gate. Compared with other types of gate dam foundation, the requirements are not high. The width of the upper part of the foundation can be used to arrange the lower gate and meet the future repair and maintenance. Therefore, the overall project investment cost is greatly reduced.
2. Scientific and reasonable structure, solid and durable gate, beautiful and elegant
When the horizontal bed flap gate turns over and blocks water, the gate plate and the hydraulic oil cylinder form a triangular support structure. The mechanical structure is scientific and reasonable. The gate is all welded with steel plate and profile steel, and through anti-corrosion treatment, it is firm and durable, and has strong anti flood impact capacity. At ordinary times, the river water passes through the top of the gate, forming a waterfall combined with the surrounding scenery, which is beautiful and generous.
3. Good water stop effect
The horizontal bed flap gate is all welded by steel plate and profile steel. In addition, the flap gate is fixed at the bottom, and the river garbage and sundries pass through the gate, which is not easy to be stuck by the sundries in the river and leak, and the water stop effect is remarkable. However, the crack of the door plate assembled by the concrete flap gate is easy to cause leakage when it runs for a long time; The bottom and side of the flap door are easy to be stuck by river garbage, branches and other sundries, resulting in water leakage.
4. Strong discharge capacity
At present, most of the flap gates on the market are floating flap gates. When the gate is opened to discharge water, water flows through the bottom and top of the gate together. The traditional flap gate is opened to 80 degrees in the water, which cannot be parallel to the water flow, thus forming a certain water blocking of the flap gate. In addition, the installation of the traditional flap gate requires two fixed piers as the gate support, which increases the water blocking. The full-automatic horizontal bed flap gate is fixed at the bottom. When it is fully turned down, the gate lies at the bottom of the river bed, flat with the dam foundation, realizing zero obstruction of discharge and allowing the flow to pass at full speed.
5. High technology content and low management cost
The horizontal bed flap gate can be remotely controlled via PLC based on the Internet network to remotely monitor the river conditions and the operation of the flap gate, and can also be converted to local control on the site. The signal is transmitted to the hydraulic control device by setting the water level sensor. The hydraulic control device controls the gate automatically by controlling the hydraulic oil cylinder. According to the flood fluctuation, the automatic opening and closing of the flap gate can be realized, and the water level in the river can be adjusted in a timely and reasonable manner to truly achieve 24-hour unattended operation. If the control pressure is too high due to problems during operation, the overpressure protection system set in the control system will automatically start, suspend operation, protect the safety of the control system and the gate, and send a short message to notify the management personnel to come for inspection and maintenance.
