4results about How to "Use less frequently" patented technology

The application discloses a kind of offshore box transformer internal environment control system and method, it is related to offshore electrical equipment control technical field, wherein, the system includes box transformer body, partition fan group, shell fan, sensing unit and control unit.Box transformer body is divided into high-pressure chamber and low-pressure chamber by partition, partition fan group is set to partition, shell fan is set to the shell of high-pressure chamber.Control unit is electrically connected with partition fan group, shell fan, sensing unit respectively;Control unit is used to receive the detection data of sensing unit, and according to detection data control partition fan group and shell fan start-stop.This scheme can complete temperature regulation inside box transformer, greatly reduce the invasion of external high salt mist air, while maintaining high protection level, realize efficient heat dissipation, and can realize the timely start of partition fan and shell fan when leakage, quickly discharge low-pressure chamber SF6 gas, eliminate security risks.

This utility model belongs to the field of low-voltage electrical technology and discloses an electromagnetic starter, including a housing assembly, a stop operation button, a thermal relay, and a button assembly. The housing assembly has an installation space; the stop operation button is located on the housing assembly and is used to accept operation to stop the electromagnetic starter; the thermal relay is located in the installation space and has a stop button for stopping the thermal relay and a reset button for resetting the thermal relay; the button assembly is movably located on the housing assembly, with its first end for accepting a pressing operation, and its second end extending into the installation space and having a pushing part that can push against the stop button and the reset button. This electromagnetic starter can reduce the frequency of use of the button assembly for resetting and stopping the thermal relay, optimize the force condition of the button assembly when pressed, and improve the service life of the button assembly and the thermal relay.

The application provides a multi-connected air conditioner and a control method thereof, and relates to the technical field of air conditioners, to solve the problem that air conditioner power is affected by power tension. The multi-connected air conditioner comprises an outdoor unit, an energy storage module and multiple indoor units, the energy storage module is connected in parallel with the indoor units, a four-way valve has first, second, third and fourth ports, and can be switched between the first and second ports being conducted and the third and fourth ports being conducted, and the first and fourth ports being conducted and the second and third ports being conducted, a compressor exhaust port is connected to the first port, an outdoor heat exchanger is connected to the second port and connected to an outdoor expansion valve and a liquid shunt in sequence, a compressor outlet is connected to a high-pressure shunt, the third port is connected to a compressor air inlet and a low-pressure shunt, the fourth port is blocked, and the liquid shunt, the high-pressure shunt and the low-pressure shunt are respectively connected to the multiple indoor units and the energy storage module. The multi-connected air conditioner provided by the application can reduce the influence of air conditioner power on power tension.

The application discloses a frequency-modulated laser pulse spectrum width calibration method and a calibration system based on a traversal correlation algorithm, and belongs to the field of laser signal processing. The frequency-modulated laser pulse spectrum width calibration method draws a first relationship curve between a measured spectrum width and a calibration spectrum width based on measurement data, and finally determines the calibration spectrum width of a subsequent laser pulse to be measured by using the first relationship curve. The application establishes a connection between a medium-precision measurement spectrum and a theoretical simulation spectrum, the calibrated spectrum width more reflects the physical nature of phase modulation relative to the -3dB spectrum width, and the data obtained by the calibration method and the calibration system has strong correlation (R>0.9), high linearity and high confidence, and the data is more reliable. Meanwhile, the calibration method and the calibration system provided by the application reduce the use frequency of a high-precision spectrometer, reduce the use cost, reduce the dependence on high-end instruments, and have high economic value.