Factory direct-operated sewage racks, steel sewage racks, sewage sewage racks, steel coarse grates, etc.

Quality and corrosion resistance/Exquisite appearance/Long quality and service life/Easy and convenient to use/Origin of Fujian/Product alias river/Product type brand new/Product use reservoir/Specifications../Purpose to intercept pollution/Applicable industry water conservancy and hydropower engineering/Brand: Guangyu /Model.,.,3, /Detailed description Detailed information toll-free hotline: - Manufacturer contact: Li Shichao 3/.Design and production basis/type flat steel waste rack, design and production in accordance with the "Steel Gate for Water Conservancy and Hydropower Engineering" of the Ministry of Water Resources of the People's Republic of China Manufacturing, Installation and Acceptance Specifications/-Execution of standard technical documents. /.Scope of use/ The flat steel pollution barrier is located at the entrance of the diversion channel of a hydropower station and the entrance and tailrace of a pumped storage power station. It is used to block fallen wood, weeds, branches and other solid debris carried by the water flow. facilities to prevent debris from entering the water diversion channel to ensure that the gates and turbine equipment are not damaged and ensure the normal operation of the equipment. /3.Technical Characteristics/ The flat steel pollution barrier is composed of a steel frame and a welded grid. This flat steel trash rack has the advantages of beautiful appearance, simple structure, easy installation, safe operation, strong floating debris trap, long service life and low maintenance cost. /. User purchase model specifications/ ① Type flat steel trash rack, the specification adopts the integral type of steel structure, the specification adopts the type of assembled steel structure. / ② Model specifications: If the width of the water inlet of the user's water conservancy project is meters, the design water head is 3 meters, and there is an urgent need for a flat steel sewage rack, the purchase model specifications are marked: -. //When the unit or pressure water pipeline requires gates for accident protection, rapid gates and inspection gates should be installed at the entrance of the behind-dam power station and the pressure pipe entrance of the diversion power station. For diversion-type power stations with long water diversion channels, it is still advisable to set up accident gates at the entrance of the water diversion channels. When the unit of a riverbed power station is equipped with an anti-escape device, the water inlet should be equipped with an accident gate and a maintenance gate. The siphon water inlet should be equipped with an air supply valve at the top of the siphon pipe. The closing time of the rapid gate should meet the protection requirements for the unit or pressure pipeline, and its descending speed should not be greater than / when approaching the bottom threshold. The fast gate hoist should be able to be operated locally and remotely, and should adopt a dual-circuit power supply operating power supply and opening indication controller. For the water inlet maintenance gate of post-dam and riverbed hydropower stations, one gate can be installed within each unit, and more can be added above the unit. The hoisting equipment should be mobile hoists. When the hub layout permits, the hoist can be shared with the drainage system maintenance gate. Gates in surge chambers should study the effects of surges on gate parking and operation. The tailwater maintenance gate should be a flat sliding gate or a stacked beam gate. The number of gates should be determined after technical and economic comparison based on the number of orifices, unit installation and debugging, construction conditions and other factors. When the unit is inside, the tailwater maintenance gate can be set with ~ fan. The hoisting equipment should be mobile hoists. An inspection gate (or accident gate) should be installed at the water inlet of the tubular unit, and an accident gate (or inspection gate) should be installed at the tailwater outlet. The design of the waste rack should take measures to reduce the loss of water head over the rack. A dirt trap should be installed at the water inlet. The layout and selection of pollution rack cleaning facilities should be determined based on the nature and quantity of the pollution in the river as well as the requirements for cleaning up the pollution. When there is little dirt, one dirt trap can be set up. When there is a lot of dirt, in addition to setting up sewage discharge and drift guide facilities, it is advisable to set up two dirt traps. The design of the pollution rack should meet the structural strength and stability requirements, and its load should be based on the type, quantity, and cleaning measures of the pollution, and the water level difference should be adopted. The water inlet of a low-head power station should be equipped with a pressure difference measurement and alarm device to monitor the water level difference before and after the waste rack. The waste rack should be movable and equipped with mechanical equipment for opening and closing the waste rack. When the waste rack is arranged at an inclination, its inclination angle should be determined in conjunction with the layout of the hydraulic structure. If a dirt cleaning machine needs to be installed for the sewage retaining rack arranged obliquely at the water inlet of a low-water head power station, a rake-type or rotary-type sewage cleaning machine can be used, or a rotary-grid type sewage cleaning machine can be used