37results about How to "Protection against overheating" patented technology

The invention provides a radiation resistance method and system for distributed electrothermal annealing and photothermal annealing, including a control module, a signal light source and n high-power lasers respectively connected to the control module, and the signal light source and n An optical fusion module connected to a high-power laser, a photoelectric composite cable and a photodetector connected to the optical fusion module, an optical fiber sensor connected to the photoelectric composite cable, an acquisition card connected to the photodetector, and a photoelectric detector connected to the photoelectric composite cable. The upper computer connected with the acquisition card, and the control module is respectively connected with the upper computer and the optical fiber sensor. The invention uses electrothermal annealing and photothermal annealing to reduce and eliminate the serious deterioration of accuracy and measurement distance caused by radiation attenuation of the optical fiber sensor in a radiation environment, thereby ensuring the reliability and accuracy of the optical fiber sensor measurement.

The invention provides a laser treatment system applying thulium-doped optical fibers. A mechanism that the heat conductivity coefficient of a material is increased along with the reduction of the concentration of doped ions is adopted, and a low-doping heat conduction channel is established in a laser device gain optical fiber and is used for accelerating heat dissipation, so that heat is prevented from being accumulated at the center of a fiber core, a thermal lens effect is effectively prevented, light damage to the material are reduced and the output beam quality and the output power are improved; furthermore, a cooling system is improved and is formed through adopting a plurality of sub-parts with independent liquid circulating channels, so that a condition that heat is accumulated ina cooling liquid flowing process, resulting in excessively high the temperature of the optical fibers is effectively prevented; an end constraint of the optical fibers is prevented and the probability that the optical fibers are burnt down when the partial temperature is too high is effectively reduced; efficient heat dissipation of the optical fibers with high heat power density is realized andpowerful support is provided for higher power output of an optical fiber laser device.

The invention discloses a maglev planar motor with good heat dissipation and a working method thereof, which comprises a energized coil array and a permanent magnet array, the energized coil array is installed on a substrate, the permanent magnet array is arranged in an object stage, and the substrate is installed on an upper base , there is an installation cover above the substrate, four installation shells are installed on the stage, a buffer plate is arranged on the installation shell, four heat dissipation fins are installed on the upper base body, the heat dissipation fins can accelerate the heat dissipation of the inner cavity of the upper base, and the upper base There are four baffles in the body, and the four cooling fins correspond to the four baffles one by one. The setting of the baffles can ensure that the external dust will not enter the upper body through the cooling fins when the maglev planar motor is not in use. There are a first confluence chamber and a second confluence chamber. The invention can satisfy the adjustment of different heights, and further satisfy the use of the loading platforms of different heights, and at the same time, the universal wheel can be adjusted in and out from the lifting plate, so as to facilitate the movement of the maglev planar motor.

The invention discloses a pressure compensation control method, which includes the following steps: step a, the igniter ignites the burner of the gas water heater; step b, the flame detector detects whether the flame exists, if so, execute step b, otherwise execute the following One step; step c, the controller increases the ignition current of the gas proportional valve for controlling the gas inlet pressure of the burner supplied to the gas water heater, and simultaneously increases the minimum current of the gas proportional valve; step d, the igniter sends The burner of the gas water heater is ignited; step e, the flame detector detects whether the flame exists, if yes, execute step b, otherwise end. The gas water heater can ignite normally, and it is not easy to turn off after switching to a low-load working state. Also disclosed is a gas water heater, which includes a water heater main body, and a controller, an igniter, a burner, a gas proportional valve and a flame detector are arranged in the water heater main body.

Provided is a laser gain optical fiber cool device which can realize high-efficiency heat dissipation of high-thermal power density optical fiber, so that a significant heat dissipation effect is achieve, As that high power output of the fib laser is provided with strong support, By using a combination of multiple sub-components, Each sub-component has an independent cooling liquid circulating channel, which dissipates heat independently, and can effectively prevent the accumulation of heat in the cooling liquid flowing process and the occurrence of overheating at one end of the optical fiber,thereby preventing the optical fiber end effect, damaging the optical fiber, and effectively reducing the probability of the optical fiber being burned out due to the local overheating.