Classification and Application of Fan Gates

The gate is used to close and open the control facilities of the drainage channel. As an important part of hydraulic structures, it can be used to intercept water flow, control water level, regulate flow, discharge sediment, floating objects, etc. The equipment installed on the sluice or pipeline can be opened and closed to control the water level and regulate the flow.

Here is the content list:

• Composition of fan gates

• Classification of fan gates

• The function of fan gates

Composition of fan gates

The fan gate is mainly composed of three parts:

① The movable part of the main body is used to close or open the orifice, commonly known as the gate, also known as the gate leaf.

② Embedded part.

③ Hoisting equipment.

The movable part includes weighing structures such as panel beam systems, supporting and moving parts, guides, and water stop devices. Embedded parts include the main rail, guide rail, hinge seat, lintel, bottom sill, water stop seat, etc. The embedded parts are installed around the orifice and firmly connected with the hydraulic structure concrete with anchor bars. It forms the supporting traveling parts and the water stop surface on the gate leaf respectively. It transmits the water pressure and other loads borne by the gate leaf structure to the hydraulic structure and obtains good water sealing performance of the gate. The hoist is connected with the gate leaf lifting lug to operate and control the position of the moving part, but there are also a few gates operated by hydraulic automatic control.

Classification of fan gates

According to the working nature of the gate, it can be divided into a service gate, a maintenance gate, and an emergency gate. The service gate, also known as the main gate, can be opened and closed to move water. The maintenance gate is set in front of the service gate. It is used for short-term water retaining during maintenance of buildings or service gates and is generally opened and closed in still water. The emergency gate is mostly set in front of the deep-hole working gate, which can be closed in the moving water and opened in the still water in case of an accident in a building or equipment; When it is also used as a maintenance gate, it is also called accident maintenance gate; The emergency gate that needs to be closed in a limited time is called the fast gate.

According to the apparent shape of the gate leaf, it is divided into the plane gate, arc gate, miter gate, arch gate, spherical gate, and cylinder gate.

The materials for manufacturing the gate leaf are divided into steel, cast iron inlaid with copper, wood, reinforced concrete, and composite material gates. In addition, some gates, such as flap gates, can be opened and closed automatically by means of hydraulic power, which are called hydraulic automatic gates.

The function of fan gates

The gate is installed on the opening of the overflow dam, bank spillway, drain hole, hydraulic tunnel, sluice, and other structures to regulate the flow, control the upstream and downstream water level, release flood, remove sediment or floating objects, and an important part of hydraulic structures. In the sluice projects, the gate is the main part, often accounting for a large part of the water retaining area. The gate is divided into a flat rate and a radial gate.

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