Flange cast iron round gate

Flange cast iron round gate

Bidirectional waterproof cast iron gates are used in projects that require forward and reverse waterproofing.
1.The gate and the gate frame are in a tapered fitting form, which can achieve good water stop after the gate is closed.
2.The installation of the gate is simple and convenient.

Arc shaped steel gate for hydropower station

The arc-shaped steel gate components of hydropower stations include side water stop seats, bottom sill water stop seats, top water stop devices, and supporting hinge seat load-bearing components, which are generally embedded within the surface of the relevant parts of the concrete to provide tight water stop and load-bearing functions. Ordinary rubber is used for small and medium-sized arc gate water stop devices that do not withstand total water pressure, while special sealing rubber is used for down the hole high-pressure arc gates. The load-bearing components of the hinge seat of the exposed arch gate are generally embedded in the overhanging cow legs of the gate pier; Some of the load-bearing beams of the support hinge of the down the hole arc-shaped gate are directly buried in the large volume concrete, while others are anchored at both ends by inserting them into the side wall.
Arc shaped steel gate opening and closing equipment for hydropower stations
The opening and closing force of the radial gate is small, and the movement trajectory of the lifting point is curved. For overhead or wide to high ratio radial gates, two lifting points are often used, and the opening and closing equipment is often arranged with one door and one machine. According to the structure of the building, the opening and closing form of the radial gate is often adopted: the lifting point is set in front of the gate leaf panel, and a steel wire rope winch or plate chain hoist is used for opening and closing; The lifting point is located on the beam system or support arm behind the door leaf panel, and can use a wire rope winch and a hydraulic hoist. The cylinder body of the hydraulic opening and closing machine for radial gates is generally designed to be swingable, in order to achieve a compact layout and reduce equipment weight.
Installation of arc-shaped steel gates for hydropower stations
1. The embedded parts for installing the radial gate include the bottom sill, side water stop seat plate, side wheel guide plate, lintel, hinge base bolt frame or hinge base steel beam and hinge base. Except for the hinge base bolt frame, which is embedded with Phase I concrete, all others are embedded with Phase II concrete.
2. Due to transportation limitations, large arc doors need to be transported in pieces to the construction site for pre assembly. To reduce the workload of on-site lifting, the main components are pre assembled or assembled into a whole before lifting.
3. The installation of overhead arc doors can be carried out using existing lifting equipment on site, mobile cranes, or other simple equipment. The down the hole arc gate adopts pre embedded anchor hook measures, and is lifted in pieces or as a whole by pulley blocks and winches. When welding the support arm and gate leaf on site, layered welding should be adopted, forced deformation should be carried out, and measures such as hammering and controlling the welding temperature should be taken to reduce deformation.
Usage and maintenance: 1. The steel gate must be opened and closed at a flat water level to prevent damage to the rubber. 2. The gate needs to be painted and treated with anti-corrosion measures once a year.

The integrated gate cleverly combines the gate with the hoist, serving as a movable structure for closing and opening the water outlet of hydraulic engineering. It does not require a hoist platform and is easy to install. Widely used in farmland irrigation, aquaculture, agricultural economic development zones, sewage treatment plants, water conservancy power stations, reservoirs, it is a specialized equipment for flood control, drought resistance, water storage, power generation, navigation, wood crossing, and removal of sediment, ice blocks, and other floating objects in water inflow and outflow projects. It can be used in mountainous areas, plains with or without power generation. The machine door integrated cast iron gate is a type of gate leaf and door frame made of gray cast iron melted and cast, and precision machined by a planer. This gate has the advantages of beautiful appearance, simple structure, easy installation, flexible opening and closing, strong corrosion resistance, low friction, good water stop performance, low water seepage (0.72L/M.Min in the forward direction and 1.25L/M.min in the reverse direction), ability to withstand high water pressure, long service life, and low maintenance costs.

PGZ flat arch cast iron gate is a control device used in various channels of water conservancy and hydropower engineering, for small and medium-sized water conservancy and hydropower, municipal water supply and drainage engineering, aquaculture, farmland irrigation and other water conservancy projects. Used to control water level and regulate flow rate. Cast iron gate is made of cast iron as raw material, which has the advantages of corrosion resistance, good water stop sealing, simple installation, and long service life. It has single and two-way water stop, and the water stop is processed by self embedding copper. The structural forms include ZFZ square cast iron gate, ZPS two-way water stop cast iron gate, ZHZ arc cast iron gate, etc.

Cast iron gates are mainly suitable for forward compression waterproofing, and reverse waterproofing gates can be manufactured according to user needs. Mechanically processed hard water stops are used in the structure, and copper or stainless steel water stops can be used according to user requirements. The double hanging point cast iron gate can withstand a normal water head of 1-6 meters and can also withstand a certain reverse water head. To meet user requirements, high water head gates can be manufactured. The installation of double suspension point cast iron gate requires overall installation and second phase pouring. The sealing gap between the gate and the gate frame should be adjusted to below 0.3mm before the second phase pouring can be carried out. When pouring concrete, the mortar flowing into the gaps between the gate, gate frame, inclined iron, and baffle must be wiped off to prevent the mortar from solidifying and affecting the opening and closing of the gate. The upper and lower frames of the gate are equipped with fixing blocks to prevent the gate from slipping out during transportation, lifting, and other processes. After installation and solidification (before use), the fixing blocks of the upper gate frame and the tightening bolts of the lower frame should be removed before starting. When opening and closing the gate, attention should be paid to the upper and lower limit positions of the gate to avoid damaging the gate or the hoist.QDAThe Denso series screw opening and closing machine is an electromechanical integrated fully sealed structure, suitable for outdoor work, and adopts worm gear transmission. Equipped with travel limit and torque protection devices, the travel limit device consists of a set of counting gears and hard contact limit switches. When the gate is opened or closed in place, the counting gear drives the travel limit rod, causing the hard contact limit switch to work and automatically stop the gate opening and closing action. When the torque increases due to some reason, the torque protection switch will act to protect the opening and closing device from accidental damage. A pointer type opening indicator and heating resistor are separately designed on the electric device. The pointer type opening indicator is connected to the counting gear, which can intuitively reflect the opening position of the gate. The heating resistor is automatically connected during the operation of the opening and closing machine to remove moisture from the electric device, ensure internal dryness, and ensure the reliable operation of various electrical components. The opening and closing nut and the output end of the electric device use a tooth embedded connector. The claw of the tooth embedded connector has a gap, which creates a hammering effect at the moment when the gate is opened, achieving the purpose of hammering start and increasing the pre lifting force when the gate is opened and closed. The cast iron support is a closed structure used to withstand the gravity or reaction force when opening and closing the gate, and is equipped with load-bearing bearings inside. It can be done both on-site and remotely. Manual and electric automatic switching.

Flange cast iron round gate