8 results about "Capacity control" patented technology

The application provides a wind farm backup frequency modulation capacity control method, a control device, a system and equipment. First, a dispatching instruction issued by a wind farm control center is received and the wind speed of each wind turbine is obtained. Then, the load shedding mode of each wind turbine is determined according to the wind speed of each wind turbine. The load shedding mode of the wind turbine with the wind speed less than a first preset threshold is an overspeed load shedding mode, and the load shedding mode of the wind turbine with the wind speed greater than a second preset threshold is a low-speed load shedding mode. The second preset threshold is greater than or equal to the first preset threshold. Meanwhile, the load shedding power of each wind turbine is determined according to the wind speed of each wind turbine and the dispatching load shedding power indicated by the dispatching instruction. Finally, the load shedding of each wind turbine is realized according to the load shedding mode and the load shedding power of each wind turbine. By matching the low-speed load shedding mode for the high-speed wind turbine, compared with the variable pitch control of the prior art, the response speed can be improved, the wind turbine can be quickly adjusted to the backup capacity, and therefore the practicability of the control strategy is improved.

Provided is a connector structure of a stepless capacity control actuator of a reciprocating compressor including an ejector rod configured to transfer power provided by a driving structure to an unloader. The connector structure includes a housing sleeving the ejector rod, a connecting member including a flange part and a sleeve part, and a sealing assembly including a first end face sealing ring, a second end face sealing ring, a first seal ring and an oil leakage joint. A first side of the flange part is connected with a second end of the housing and a second side of the flange part is configured to connect with the driving structure. A second oil hole is formed in the sleeve part and in butt joint with a first oil hole. The oil leakage joint is connected to the first oil hole.

The application provides a method and product for train resource and warehouse coordination configuration in rail transit scheduling, breaks through the existing scheduling mode mainly based on fixed operation diagram or simple train level planning, and cooperatively realizes response of station passenger flow demand, train turnaround transportation and warehouse capacity control, generates a potential train set adapted to the space-time characteristics of station passenger flow by taking station passenger flow as a driving force, and cooperatively verifies the occupation, recovery and warehouse operation of train resource through train connection relationship variable, so that the obtained scheduling result not only meets the passenger flow demand at the train level, but also has engineering executability at the train and warehouse level, fundamentally avoids the problem of mutual fragmentation between train operation plan and train resource configuration and warehouse capacity, and the obtained train operation plan and train scheduling plan have engineering implementability.

A stabilizing link and a drive link of a compressor capacity control valve are physically and / or completely separated, for example, such that the respective links use separate and discrete attachment protrusions disposed on a drive ring and a restrictor ring of the capacity control valve. The discrete attachment protrusions are used to apply a lower stress on each attachment protrusion than links that share some attachment protrusions, including a pair of stabilizing links and drive links. A stabilizing link may be connected to the inter-stage housing. The link assembly allows the restrictor ring to be driven in an axial direction to open or close the compressor capacity control valve.

The application provides a kind of based on the capacity control system and control method of grinder system air volume air pressure, applied to material crushing technical field, including abnormal monitoring module, abnormal monitoring module includes screen abnormal monitoring unit and low-efficiency operation monitoring unit;Screen abnormal monitoring unit is used to determine whether screen exists the trend of blockage, if screen exists the trend of blockage, then feedback to capacity adjustment module to reduce the feed amount of grinder;Low-efficiency operation monitoring unit is used to determine whether grinder exists low-efficiency operation, if grinder exists low-efficiency operation, then feedback to capacity adjustment module to increase the feed amount of grinder;Abnormal monitoring module determines whether the screen of grinder exists the trend of blockage according to the real-time data collected by data acquisition module, on the basis of guaranteeing that screen is not blocked, maintain the minimum airflow required for crushing and transportation, and make the motor of grinder run at maximum load at this time, adjust the feed amount of grinder to realize maximum capacity.

A compressor system for a refrigeration system, comprising a plurality of compressors (1), one of which has a first compressor (1) with continuous capacity control (6), is designed to meet the refrigeration system's power requirements by controlling the first compressor (1) as the lead compressor and switching the other compressors (1) on and off as follow-up compressors. This system is intended to increase the service life of the compressors (1) in the system. For this purpose, at least one of the other compressors (1) has continuous capacity control (6), which is speed-independent. The compressor system is further designed to alternatively meet the refrigeration system's power requirements by controlling one of the other compressors (1) as the lead compressor and switching the first and, if applicable, the remaining compressors (1) on and off as follow-up compressors.

Stabilization and drive linkages of a compressor capacity control valve are separated, for example physically and / or entirely, such that the respective linkages use separate and discrete attachment projections provided on the drive and throttle rings of the capacity control valve. The use of discrete attachment projections places lower stress on each attachment projection compared to linkages including paired stabilization and drive linkages sharing some attachment projections. The stabilization linkages can connect to an interstage casing. The linkage assemblies allow the throttle ring to be driven in an axial direction so as to open or close the compressor capacity control valve.