5results about How to "Improve effective use" patented technology

The application belongs to the technical field of low-carbon cement materials, and particularly relates to a low-carbon production process and system of high belite cement clinker, wherein the low-carbon production system comprises a raw material pretreatment module, a clinker firing module, a flue gas control module and a product detection module; in the application, traditional limestone and paper mill filter residue are used as calcium raw materials, coal cinder and coal gangue are used as aluminum / silicon raw materials, phosphogypsum is used to completely replace natural gypsum as sulfur raw material, copper residue is used to adjust iron material, and finally, calcium fluoride sludge is used to replace fluorite, so that the effective utilization of solid waste is improved, resources are saved, and the adverse effects of solid waste on the surrounding environment are reduced; in the calcination process, low-temperature staged calcination is adopted, the calcination temperature is controlled to be 1200-1300 DEG C, and staged temperature rising is adopted; compared with the traditional portland cement calcination temperature, the temperature is 50-100 DEG C lower, energy consumption and carbon dioxide emission are effectively saved, and the theme of energy saving and environmental protection is met.

The utility model provides a built-in efficient heat exchanger which comprises a heat exchange shell for storing a refrigerant and a heat exchange pipe for medium circulation and heat exchange, the heat exchange shell is provided with a heat exchange inner cavity, the heat exchange pipe is installed in the heat exchange inner cavity, the heat exchange shell is provided with a built-in integrated pipe set, the built-in integrated pipe set comprises an integrated liquid inlet pipe and an integrated liquid outlet pipe, and the integrated liquid inlet pipe is connected with the integrated liquid outlet pipe. The inner connecting end of the integrated liquid inlet pipe and the inner connecting end of the integrated liquid outlet pipe are connected to the heat exchange shell and extend to the heat exchange inner cavity, and the liquid inlet end and the liquid outlet end of the heat exchange pipe communicate with the integrated liquid inlet pipe and the integrated liquid outlet pipe in an integrated mode. The structure is simple, the heat exchange tubes made of different materials are effectively prevented from being directly welded on the heat exchange shell, and the pressure resistance of the product is improved; meanwhile, effective utilization pipe sections of the heat exchange pipes are increased, the heat exchange capacity of the heat exchanger is improved, and the product manufacturing cost is reduced.

The invention provides an audio device frequency response calibration method and device, a storage medium and electronic equipment, and is applied to the technical field of audio signal processing. The method comprises the following steps: acquiring a first frequency response difference curve of a to-be-tested audio device; according to the first frequency response difference curve, after it is determined that the to-be-tested audio device meets the frequency response calibration condition, a first extreme point in the first frequency response difference curve is identified, and the first extreme point represents the screened to-be-calibrated frequency response difference; on the basis of a preset frequency band division and bandwidth calculation rule, according to the frequency response difference value and the frequency corresponding to the first extreme point, filter parameters corresponding to the audio device to be tested are determined, and the frequency band division and bandwidth calculation rule is preset on the basis of human auditory characteristics and a production line production deviation distribution rule; and designing a filter based on the filter parameter, and calibrating the frequency response of the to-be-tested audio device. According to the invention, the calibration precision is ensured while rapid calibration is realized.

The application discloses a low-temperature preservation cabinet and a control method of a variable-frequency fan thereof, and belongs to the technical field of refrigeration of the low-temperature preservation cabinet. The low-temperature preservation cabinet comprises a cabinet body and a compressor chamber, and the compressor chamber is internally provided with a condenser, a variable-frequency fan, a compressor, an electric control box and a sensor; the condenser is fixed at the front part of the compressor chamber; the variable-frequency fan is fixed on the condenser; the electric control box is fixed at the right rear part of the compressor chamber and is connected with the compressor and the variable-frequency fan through a circuit. The method reduces the noise and energy consumption of the low-temperature preservation cabinet, prolongs the service life of the fan, reduces the maintenance rate of the low-temperature preservation cabinet and lowers the cost; the rotating speed of the fan of the low-temperature preservation cabinet is associated with the condenser temperature, the ambient temperature and the start-stop state of the compressor, the control method is various, different maximum rotating speed values are set according to the start and stop states of the compressor, the noise and energy consumption are reduced, the effective use of energy is better promoted, the cost investment is reduced, and the sustainable development is favorable.

The utility model relates to the technical field of automobile parts manufacturing technique discloses an oil immersion equipment for automobile parts manufacturing, including oil immersion frame, the one side fixed connection of oil immersion frame has the support block, the top fixed connection of support block has the motor, the output shaft of motor is fixedly connected with the lead screw through the shaft coupling, the outer wall movable connection of lead screw has the movable block, the one side fixed connection of movable block has the lifting plate. This oil immersion equipment for automobile parts manufacturing, through setting up the oil immersion frame, first pump body, oil pipe, oil tank, upper filter screen, oil drain pipe, oil outlet pipe, second pump body, oil inlet pipe, middle filter screen and lower filter screen, in the oil immersion work process to the gear in the automobile parts, can directly filter the oil after use, thereby facilitating the use of the filtered oil again, improve the effective use of resources, further improve the practicability of oil immersion equipment, thereby further satisfy the use demand of people.