Hydraulic opening weir gate
Weir door for downwards opening, the weir door after falling with the bottom of the pool seamless connection, do not affect the channel, Weir door opened by the hydraulic cylinder drive, liquid level meter as a sense signal, the oil cylinder with displacement sensor, can realize the position of Weir door panel accurate positioning.
Each set of devices includes (1) an Open Weir Gate body (2) sealing Assembly (3) hydraulic Station (4) Oil cylinder and tubing (5) Installation Attachment (6) without control cabinet.
3 Main Technical performance
3.1 Weir Gate Structure
(7)下开式堰门在设计水头下充分地密封，在承受设计水头的压力时，渗漏量满足GB/T 14173-2008 《水利水电工程钢闸门制造、安装及验收规范》，即通过任意1m长度的水封范围内漏水量不超过0.1 L/s。
(1) The main body of the hydraulic opening weir door is composed of a frame, a guide groove, a rubber seal, a door plate and an opening and closing oil cylinder. The use of headstock cylinder hydraulic drive Weir door up/down movement, completion of the weir door open or closed state, you can achieve the box culvert or pipe flushing, water level control and flow control, and many other functions.
(2) The hydraulic opening weir door opened to the line flood without any obstruction, as power failure the weir door can rely on the weir door itself with gravity automatically. The structure is compact, and the weir door is opened to lower the upper mounting space without affecting the landscape on the ground.
(3) The structure of the lower open weir door is made of structural steel or stainless steel, with high corrosion resistance, light weight and durable.
(4) Weir door frame on both sides of the guide groove, both sides of the guide Groove is equipped with hydraulic cylinder, piston rod connecting weir door doors. The door panel of the weir is matched with the guide groove. The position design of hydraulic cylinder is reasonable, enclosed in the frame of weir door to ensure the stability of hydraulic oil cylinder, the force of the door panel of Weir Gate is also more uniform, and the stability of gate door movement is further ensured.
(5) The opening and closing oil cylinder of the lower open weir door can be equipped with automatic control system, which realizes unattended automatic control on the lower open weir door, and can realize remote control.
(6) The whole structure of the lower open weir door is compact, simple and easy to manufacture, and the device can be set under water, which is suitable for various environments.
Applicable media: Domestic sewage, rainwater and other polluted water. Operating temperature: 0-60 ℃.
(7) The lower open weir door is fully sealed under the design head, in the design of the pressure of the head, leakage to meet the GB/T 14173-2008 "hydraulic and hydroelectric engineering steel gate manufacturing, installation and acceptance code", that is, through any 1m length of water seal within the scope of the leakage of not more than 0.1 l/s.
(1) The weir door frame and weir door are welded by gas shielded welding, and the physical and chemical properties of the welding materials are suitable for the properties of the base metal. The weir Gate bears the main load structure, uses the full weld seam, may not use the plug welds the connection. After welding to eliminate force, prevent deformation.
(2) Manual arc welding, gas shielded welding seam groove type and size according to the provisions of gb/t985.
(3) The welding piece is firm and reliable, the surface is polished and smooth, and the weld seam has no crack, blowhole, arc pit and splash material.
(4) The classification of weld seam and the appearance of weld seam in Weir gate shall prevail with gb/t14173 standard.
(18)以太网连接是堰门实现自动控制和通信的重要部分，设备的控制通过数据的传送和接收实现。通过以太网和服务器，可以把 PLC 控制器的数据传送到电脑上，实现操作的可视化，以太网的断开对堰门的控制没有任何影响。
3.3 Electro-hydraulic control system
(1) The key electrical components of the hydraulic control system are used in the products.
(2) The hydraulic control system is made of universal and standardized parts.
(3) Hydraulic system assembly set pressure sensor to monitor the pressure of the whole system.
(4) The hydraulic system can open the weir door by itself after the power outage in the rain, and the hydraulic system can be self-locking and keep the weir door closed during the sunny day.
(5) Weir Gate on-site control device to ensure reliable operation, with high reliability and anti-interference ability, to ensure that the local specific environment, temperature and humidity range can work properly.
(6) The control system has fast speed, reliable performance, powerful network communication function, convenient and reliable interface and open network protocol.
(7) The control system operation interface design is beautiful, each component arrangement is reasonable, neat, the operation is convenient, simple, fully considers the human body structure characteristic and the visual characteristic.
(8) in the control cabinet design, internal components terminal layout, fully consider the maintenance of the convenience of personnel maintenance wiring.
(9) The control system can select the operation mode of the system through the special selection switch on the Operation panel: in-situ manual or automatic control. Once the control mode is set, the interlock prevents the misoperation.
1 when the system chooses manual control, all controls include the starting pump, the door opening, the closing and the rectification are manual control, the PLC and the master control level are not involved in the control, but still can monitor the system state.
2 when the system chooses the automatic control mode, all manual controls are invalid, the system realizes the perfect automatic control, can complete the opening, closing and stopping operation of the weir door and various protection functions.
(10) The electric control part of the hydraulic station must be equipped with short-circuit protection, overcurrent protection, voltage loss protection, short phase protection and earthing protection.
(11) PLC used to control the Weir Gate system imported high-performance, technologically advanced programmable controller. It has the functions of CIS control, regulation, process input/output, data processing and external communication.
(12) The control cabinet is a steel bracket metal enclosure closed structure, can support independently and can satisfy the local specific environment seal. All the doors are brought with a handle, can lock dead, and with the limit device.
(13) The main circuit inside the cabinet is isolated from the grounding part, and the cabinet body ensures adequate ventilation and can prevent salt spray corrosion and small animal intrusion. The cabinet is provided with grounding, terminal row position convenient wiring, plastic wire groove, slot cover can be segmented disassembly.
(14) Set up a set of moisture-proof electric heater, and with automatic temperature control protection device, the capacity of 100w~200w.
(15) The protection level of the control cabinet is not less than IP54.
(16) The hydraulic cylinder is equipped with a travel detection sensor. The trip detection sensor is placed in the oil cylinder, the action is accurate, reliable, anti-interference ability is strong, the sensor protection level is not less than IP68.
(17) PLC devices, intermediate relays, switches, buttons, indicators and other electrical components recommend the use of well-known brands.
(18) Ethernet connection is an important part of automatic control and communication of Weir Gate, and the control of equipment is realized through data transmission and reception. Through Ethernet and server, the PLC controller data can be transferred to the computer, the visualization of operation, the disconnection of Ethernet has no effect on the control of Weir Gate.
Main component material of the lower open weir door