5results about How to "Solve freezing problems" patented technology

The present invention provides a drainage structure of a corrugated floor of a train, comprising a corrugated floor, a drainage groove, a heating device and a drainage valve. The drainage structure has holes on the upper surface, and the hole positions correspond to the holes at the troughs of the corrugated floor to meet the drainage requirements of the vehicle body. The drainage groove is provided with a heating device at the bottom to effectively solve the problem of freezing of the drainage holes in a cold environment. The drainage groove is provided with a drainage valve at the bottom, and the drainage valve is normally closed to effectively seal the vehicle body at the drainage structure to meet increasingly higher sealing requirements. The drainage groove can be used to collect condensed water from the vehicle body, and then the drainage valve is opened regularly to solve the problem of condensed water being discharged everywhere.

The present application relates to the technical field of fluid conveying pipeline temperature control, and specifically discloses an intelligent temperature control method and system for electric heating hoses in extremely cold environments, aiming to solve the technical problems of existing temperature field sensing blind spots and the inability of fault diagnosis to distinguish between external working condition interference and hardware failure. First, the hose configuration and real-time operation data are obtained, a temperature field reconstruction model based on boundary condition online identification is constructed to reconstruct the full-length temperature distribution of the hose, then the thermal response feature vector composed of the heating response time, cooling response time and equivalent heat dissipation coefficient of the heating section is extracted and a historical normal value baseline is established, the precise distinction between working conditions and faults is realized based on the feature vector, and finally the adaptive collaborative temperature control is completed in combination with the reconstructed temperature distribution and the diagnosis result. The temperature field sensing blind spots can be eliminated, the fault false alarm rate is reduced, the aging of the heating element can be early warned to realize predictive maintenance, the temperature control strategy can be adapted to environmental changes, and the safe transportation of easily frozen media in extremely cold environments is effectively ensured.

The invention belongs to the technical field of associated gas recovery, and particularly relates to a non-metal valve element casing gas recovery device and method.The device comprises an upper connector, a connecting pipe, an outer sleeve, an upper leather cup, a lower leather cup and a plug, and the upper connector is provided with a gas inlet; the first end of the connecting pipe is detachably connected with the second end of the upper connector, and the second end of the connecting pipe is provided with an overflowing hole. The outer sleeve is detachably connected with the connecting pipe, the second end of the connecting pipe is arranged in the inner space of the outer sleeve, a center pipe is arranged in the inner space of the outer sleeve, and the lower end of the outer sleeve is connected with a plug which is provided with an exhaust hole. And the upper leather cup and the lower leather cup are respectively sleeved on the central pipe, are in interference fit with the inner wall of the outer sleeve in a sealing manner, and are made of non-metal materials. The sleeve gas recovery requirements under different working conditions are difficult to meet in the prior art. Therefore, a novel device and a novel method which can effectively solve the problem of freezing and blocking of the device and achieve complete recovery of the casing gas are urgently needed.

A steam generation system of a supercritical photo-thermal generator set relates to the technical field of photo-thermal power generation, aims to solve the problem that an existing steam generation system is not mature yet, and adopts the technical scheme that the steam generation system comprises a main steam path heat exchanger used for heating feed water and completing evaporation and further heating steam to supercritical parameters; the reheater is used for heating reheated steam exhausted by a high-pressure cylinder of the steam turbine; the steam-water separator is used for realizing steam-water separation when the main steam pressure is lower than the critical pressure; a preheating bypass is started, the system is preheated in a circulating heating mode, and molten salt is prevented from being solidified; the molten salt heat exchange loop optimizes the reheated steam temperature requirement and the molten salt utilization rate through a small parallel connection mode and a large parallel connection mode; and the control valve group is used for switching a preheating mode, a starting mode, a load adjusting mode, a hot standby mode and a complete shutdown mode. Through intelligent control, the system achieves efficient heat exchange, freezing and blocking prevention, flexible switching and daily rapid starting and stopping, and is suitable for operation work of supercritical photo-thermal power generation.

The invention relates to the technical field of ethane recovery systems, and in particular to an ethane recovery system and a recovery method thereof suitable for high-carbon dioxide-rich gas, comprising a first precooling cold box, a second precooling cold box, a supercooling cold box, a low-temperature separator, an absorption tower, a tower top separator and a demethanizer; the precooling input end of the first precooling cold box and the precooling input end of the second precooling cold box are both connected to external raw gas, when in use, the absorption tower and the demethanizer tower top separator replace the low-temperature distillation section of the demethanizer, so that the CO2 content in the gas phase entering the low-temperature zone is reduced, and most of the CO2 is diverted to the demethanizer stripping section, which effectively solves the freezing and blocking problem of the traditional demethanizer when the CO2 content is ≥2mol%; at the same time, the operating pressure of the demethanizer is ≥300KPa higher than that of the absorption tower, which greatly reduces the power consumption of the external transmission compressor, and the ethane recovery device is more energy-efficient, and is suitable for medium-pressure and high-carbon dioxide-rich gas ethane recovery devices.