4results about How to "Avoid long running" patented technology

The utility model belongs to the technical field of early warning mechanisms, and particularly relates to an electric leakage early warning structure of a looped network switch cabinet, which comprises a looped network cabinet body, and a direct current power supply, a current sensor, a control assembly and an alarm mechanism are mounted at the top in the looped network cabinet body in front of an electrical mounting guide rail. One end of the electromagnetic valve penetrates through the top of the ring main unit body and is sleeved with a balloon, the other end of the electromagnetic valve is in threaded connection with a connecting piece, the connecting piece comprises a reducer pipe, the reducer pipe is in threaded connection with a miniature gas storage cylinder, a connecting frame is arranged on the inner side of the reducer pipe, and a contact pin arranged on the connecting frame penetrates through the top of the miniature gas storage cylinder in an inserted mode. An air channel is formed in the contact pin in a penetrating mode, and a pressure sensor is installed on the side face of the reducer pipe. After electric leakage is sensed, the electromagnetic valve is opened to enable the pressure gas in the miniature gas storage bottle to enter the balloon, and a worker can quickly observe the balloon floating on the top of the ring main unit body so as to determine the electric leakage state of the ring main unit body.

The invention provides an intelligent peak regulation coal material treatment system for thermal power generation, and relates to the technical field of thermal power generation, the intelligent peak regulation coal material treatment system for thermal power generation comprises a crushing and screening device, a washing device, a drying device, a coal grinding device, a transmission device, an intelligent regulation and control device and an energy storage device; the crushing and screening equipment, the washing and selecting equipment, the drying equipment, the coal grinding equipment and the transmission equipment are used for processing coal and transmitting the coal to a boiler, the intelligent regulation and control equipment is used for controlling the operation states of the crushing and screening equipment, the washing and selecting equipment, the drying equipment, the coal grinding equipment and the transmission equipment by adopting a regulation and control algorithm according to power utilization wave peaks and power utilization wave troughs, and the energy storage equipment is used for storing power at the power utilization wave peaks; the system is energy-saving, can be matched with the load of a power grid, and reduces the power supply pressure of the power grid.

This invention relates to the field of multi-split air conditioning system technology, specifically to a disturbance control method for the outer loop electronic expansion valve of an air conditioning system. The problem this invention addresses is how to actively eliminate oil and refrigerant blockage and reduce exhaust temperature during defrosting or oil return processes through forced disturbance control of the outer loop electronic expansion valve. To solve this problem, this invention provides a control method comprising: acquiring the operating status parameters of the air conditioning system; determining whether the air conditioning system has triggered a disturbance program based on the status parameters; correcting the reference setting based on the exhaust temperature, compressor return superheat, and oil separator return oil temperature during the execution of the disturbance mode; determining whether to exit the disturbance program based on the exhaust temperature and the execution duration of the disturbance program during defrosting and oil return modes; and automatically exiting the disturbance program when the air conditioning system exits the defrosting or oil return mode.

A fuel conveying device capable of automatically preventing material shortage during sinter production relates to the technical field of metallurgy and comprises a fuel bin, a vibration motor, a fuel conveying belt, a material shortage detection mechanism and an electric appliance control cabinet. When fuel in the fuel bin is deposited, the fuel on the fuel conveying belt is reduced or is cut off, the gravity of the fuel borne by the belt is reduced, the belt moves upwards, the upper sliding plate and the lower sliding plate move upwards under the tension action of the spring, the induction plate is close to the induction switch, and electric signals of the induction switch are transmitted to the electric appliance control cabinet. And finally, the vibration motor is started to work, after the vibration motor is started to eliminate deposition, blanking returns to normal, and at the moment, the electric appliance control cabinet receives a signal of the inductive switch and stops working of the vibration motor. According to the blanking condition, the vibration motor is automatically started and stopped, manual guarding is not needed, and the labor cost is reduced; long-time operation of the motor is avoided, the service life of the motor is prolonged, and power consumption is reduced.