Detection method for temperature rise of explosion-proof elevator during braking of brake
An elevator brake and detection method technology, which is applied in the fields of temperature detection, elevator explosion-proof, and elevator brake braking, can solve problems such as no explosion-proof protection measures, and achieve the effects of wide application range, high efficiency, and safe and reliable operation
Inactive Publication Date: 2013-10-30
SHANGHAI INST OF SPECIAL EQUIP INSPECTION & TECHN RES +1
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Problems solved by technology
[0005] The current traction explosion-proof elevators are basically controlled by frequency conversion and voltage regulation. During the normal braking process, the mechanical energy of the elevator is completely converted through the electrical circuit. Therefore, under normal circumstances, the brake hardly generates any frictional heat (that is, Zero-speed brake), but in emergency situations such as sudden power failure, high-load mechanical friction will occur, and there is no direct explosion-proof protection measure at this time
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[0037] The present invention is described further in conjunction with accompanying drawing, and the manufacturing technology of this device is very clear to those skilled in the art.
[0038] Since the stopping time of the elevator is usually relatively short, the heat generated during the entire braking process is mainly absorbed by the brake shoe, and the convective heat exchange process between the brake shoe and the external environment is accompanied by frictional heat. The generation process occurs at the same time, so the measurement of its temperature rise must be carried out during the movement, that is, the measurement means must be able to meet the requirements of real-time measurement.
[0039] Due to the limitation of the structural size and space layout of the elevator traction machine, it is impossible to install a thermocouple wireless temperature measuring device inside the brake wheel; and although the external space of the brake shoe is allowed, the thermal c...
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The invention relates to the technical fields of temperature detection, explosion proofing for elevator and the braking of elevator brake, particularly to a detection method for a temperature rise of an explosion-proof elevator during the braking of a brake. The detection method for a temperature rise of an explosion-proof elevator during the braking of a brake comprises the following steps of: measuring the temperature and humidity of an environment, stabilizing the operation of the elevator, adjusting the weights (counterweights) of a compartment, starting an infrared thermal imager to acquire data, shooting, recording and the like, so as to finish monitoring for the temperature rise of the explosion-proof elevator. The detection method for a temperature rise of an explosion-proof elevator during the braking of a brake disclosed by the invention can perform accurate monitoring on the temperature rise when the explosion-proof elevator is braked, and can perform explosion-proof control and maintenance on the elevator better, so that the operation of the elevator is safer and more reliable. The method is high in efficiency during operation, wider in application range, and capable of being used for various explosion-proof elevators.
Description
[technical field] [0001] The invention relates to the technical fields of temperature detection, elevator explosion protection, and elevator brake braking, in particular to a detection method for temperature rise of an explosion-proof elevator brake during braking and stopping. [Background technique] [0002] When designing an explosion-proof elevator, it is required that it must be able to reliably prevent ignition of dangerous sparks and ignition of dangerous high temperatures. At present, domestic research on explosion-proof safety technology for explosion-proof elevators mostly focuses on electrical sparks. The ignition sources of explosion-proof elevators include mechanical sparks, static sparks, dangerous high temperatures, and many other factors. Traction-type explosion-proof elevators should meet both elevator standards and electrical explosion-proof. A series of standards, as well as a series of non-electrical explosion-proof standards, among which the explosion-pro...
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IPC IPC(8): B66B5/00G01J5/00
Inventor 薛季爱姚俊江浩张鹏丁惠嘉徐国强朱昌明史熙
Owner SHANGHAI INST OF SPECIAL EQUIP INSPECTION & TECHN RES