304 steady flow tank

1 Introduction steady flow tank, also known as vacuum tank, play an important role in the negative pressure water equipment, an important part is no negative pressure water equipment. Steady flow tank's role is with the municipal pipe network as a single entity laminated and eliminate the negative pressure, eliminate secondary contamination of water sources of atmospheric, intelligent control compensation water. 2 cans steady flow of negative pressure water equipment without negative pressure control parameter set pressure without negative pressure water equipment control system, if the municipal water supply pipe network pressure at or above the set pressure parameters, pressure sensor The municipal pipe network pressure feedback to the control system without negative pressure water equipment, water pipe network directly to the user through a direct supply line to the water users, without energy booster. When the municipal pipe network pressure water pipe network changes or user changes make the pipeline pressure below the set pressure, the pressure sensor pipe network pressure feedback to the negative pressure water equipment control system PlD controller, the controller adjustment by PlD output frequency, start without negative pressure water equipment unit and adjust the pump speed to maintain constant pressure water supply; as in a lot of water when the water peak, there was no negative pressure water equipment control system will control multiple frequency pump start and stop and pump-control, so as to achieve constant pressure variable water supply requirements. 3 steady flow of negative pressure tank to eliminate negative pressure water equipment technology using constant pressure technology and efficient vacuum processing technology pipe network overlying water supply. As follows: device through steady flow tank vacuum compensation system and a fully enclosed structure to achieve a directly connected with the water pipe network, and eliminate negative pressure technology to overcome the adverse impact of the pipe network. The device through the pipeline pressure testing, vacuum suppressors, steady flow compensator steady flow detection means collecting tank vacuum and water level signals, real-time feedback, vacuum suppressors and steady flow compensator special device by computer control action, inhibition of negative pressure generating ensure the steady flow can eliminate the negative pressure of the device does not affect the distribution network. Such as when municipal pipe network without water, the pump unit can still work, automatically shut down until the steady flow limit pressure tank water pressure drops to negative pressure water equipment control system set automatically after boot runoff. Power outage, water pump stopped working, water can pass straight line without negative pressure water equipment into the pipe network users. When an incoming call automatically turn the unit back to normal water supply. 4 steady flow tank negative pressure suppression system based on negative pressure generating conditions, the use of intelligent control technology, the set requirements according to the pipe network, automatic control equipment operating conditions, eliminate the negative pressure generated by the steady flow tank. When the net charge pressure is set to run no negative pressure water supply equipment protection over time, normal water supply equipment, net charge pressure when negative pressure water equipment to run the set pressure less protection, water supply equipment down automatically adjust equipment operation When working conditions, when the pressure is further reduced to a net charge of restricting the use of pressure, the water supply equipment stops running, the equipment balance in meeting the network constraints, stably adjust the pump outlet flow rate, the maximum to meet user requirements. 5 live steady flow cans or purpose ◆ new residential buildings, such as water. ◆ has been built with pools, water supply tanks reinvented order to eradicate water pollution. ◆ factories and enterprises in the production and living water. ◆ long-distance water supply in the middle of urban water supply system compressor stations, compressor stations regional water supply networks, high geographic concentration pressurized water station.