Traffic police command vehicles play a significant role in urban traffic management. In particular, traffic problems in large cities have become an important constraint to urban development. When the road is congested, the traffic police command vehicle will be called to assist the traffic command. This kind of vehicle, though it does not function as much as the emergency command vehicle, has a heavy responsibility. Traffic police command vehicles mainly consist of the following components. First, the onboard communication system. As a command vehicle , a communication system is a necessary component. Although a traffic police command vehicle conducts commands within a specific road section, it needs to rely on an on-board communication system to receive orders from superiors and can also understand the road conditions of other road sections. Although the communication system of the traffic police command vehicle is not as powerful as the military command vehicle, the basic communication equipment should be complete, such as positioning system, communication system, image acquisition system, call equipment, and computers. These devices can better ensure the communication work. . In addition, for traffic police command vehicles, having a communication system can timely feedback the traffic conditions of the road section, which is conducive to the overall dispatch of urban traffic work. Second, the alarm system. If there is a major traffic accident in the road section, you can use the traffic police command vehicle to call the police for more support. In fact, the alarm system can also be regarded as an integral part of the communication system, but it also has the function of prompting. For example, after a dangerous situation occurs, a warning is issued through the system, so that the surrounding vehicles and pedestrians can understand the danger in time, effectively avoid the loss and reduce the loss. The alarm system is also a main mode of function of the traffic command vehicle and is an indispensable part of the command vehicle. Third, security defense system. Traffic police command vehicles also have certain safety defensive capabilities. As a mobile command platform, they may encounter unexpected situations in the course of command. If the vehicle's security defense performance is not strong, it is easy to cause accidents. Members will cause great damage. The security defense system is a security system that the traffic police command car cannot ignore. It serves as a supportive security function.
A variety of mechanical feeders, including drag-chain conveyors and rotary pocket feeders, historically have been used to volumetrically control the flow of fuel to coal pulverizers on power generators. Most power generation in the United States has relied on burning fossil fuels in steam boilers, with coal as the fuel of choice. By the 1920s, pulverized-firing (the burning in suspension of finely ground coal particles) evolved as means to more complete fuel combustion and higher system efficiencies and facilitated the use of larger boilers.
In the 1950s, Arthur J. Stock (1900-1986) successfully combined the weighing and control of material flow into a single device, now known as the Gravimetric Feeder. The first installation was placed in continuous operation at Niagara Mohawk Power Corporation's Dunkirk Station in 1957.
Ralph Hardgrove, a Babcock & Wilcox retiree who joined Stock Equipment Company in 1961 (at 70 years of age), led the feeder's development into general industry acceptance by the mid-1960s, when most large coal-fired boilers included gravimetric feed systems in their design.
The first Stock gravimetric feeder operated from 1957 to 1992, to be replaced by current gravimetric microprocessor-controlled design. This feeder was donated to Stock Equipment, refitted, and refurbished for public display in the engineering plant.
Coal Feeder,Feeding Machine,Gravimetric Feeder,Stock Coal Feeder Jining Dongda Electromechanical Co.,Ltd. , https://www.coal-mine-equipment.com