38results about How to "To achieve the purpose of antifreeze" patented technology

The invention discloses an antifreezing device. The antifreezing device comprises a steam exhaust device, a steam exhaust pipe, a water returning pipe, and a first outer connection pipe. One end of the steam exhaust pipe is connected with the steam exhaust device, the other end of the steam exhaust pipe is used for being connected with an air cooling island, and the steam exhaust pipe is used forconveying steam in the steam exhaust device to a cooler of the air cooling island; one end of the water returning pipe is connected with the steam exhaust device, the other end of the water returningpipe is connected with the air cooling island, and the water returning pipe is used for conveying condensate water generated in the cooler to the steam exhaust pipe; one end of the first outer connection pipe communicates with the water returning pipe, the other end of the first outer connection pipe communicates with the outside, a first valve is arranged on the first outer connection pipe, and the first outer connection pipe is used for conveying outside air to a cavity of the air cooling island. According to the technical scheme, through air seal of gas leakage positions of the steam exhaust pipe, the water returning pipe and the like, steam is prevented from entering the air cooling island from the gas leakage positions, and the anti-freezing aim is achieved.

The invention relates to an antifreeze structure and an antifreeze method for a casing heat exchanger. The structure includes a refrigerant pipe, a casing, a water storage tank and a control circuit. A water heating chamber is formed, and one end of the water heating chamber communicates with the water storage tank; it is characterized in that it also includes a circulating water pump, an outdoor temperature sensor and a water level switch electrically connected to the control circuit; the circulating water pump is provided with a water inlet and a water outlet, The water inlet is respectively connected to the water inlet pipe and the water storage tank through the electric three-way regulating valve, and the water outlet is connected to the other end of the water heating chamber; the water level switch is located in the water storage tank, and the water storage capacity in the water storage tank corresponds to the height of the water level switch. Greater than or equal to the water storage capacity of the water heating chamber. The anti-freezing structure of this type of casing heat exchanger can drive the water in the water heating chamber to flow through the circulating water pump, thereby slowing down its freezing speed to a certain degree.

The invention discloses a time-sharing antifreeze control method for an indirect air cooling tower, which comprises opening and closing the shutters of the air cooling and heat dissipation units of the sector when the outlet water temperature of the sector is less than t1°C or the average cooling column temperature is less than t3°C , when the outlet water temperature of the sector is greater than t1°C and less than t2°C and the average cooling column temperature is greater than t3°C and less than t4°C, keep the shutters of the sector air-cooling heat dissipation unit still; when the sector outlet water temperature is greater than t2°C and the average cooling column temperature is greater than t4 When the temperature is ℃, the shutters of the air-cooling heat dissipation unit are opened in units of sectors; in the next predetermined time, when the temperature of the coldest finned tube is less than t5°C, the shutters of the air-cooling heat dissipation units are opened in the next predetermined time. Close the adjustment, when the temperature of the coldest finned tube is greater than t5°C and less than t3°C, keep the louvers of the air-cooled heat dissipation unit still, and when the temperature of the coldest finned tube is greater than t3°C, open the adjustment of the louvers of the air-cooled heat dissipation unit.

The invention discloses a ceiling fresh air handling unit system resisting freezing in winter, which comprises a fresh air unit, an electric airtight valve, a manual airtight valve, a single-layer louver, an iron sheet short tube, a fireproof valve, an air duct of a fresh air unit system, a system supporting and hanging frame and a fresh air unit supporting and hanging frame. When the outdoor and indoor temperature difference is large, the electric airtight valve is directly closed, and the manual airtight valve is opened to ensure that indoor air flows to the fresh air unit system through the manual airtight valve under the action of indoor heat pressure, outdoor heat pressure and wind pressure so as to effectively prevent the temperature of water in a copper tube of the fresh air unit system from excessively reducing to achieve the purpose of resisting the freezing. Indoor heat is fully utilized, and a large quantity of energy sources can be saved under the condition of meeting the operating requirement.

A fuel-gas fast anti-freezing water heater with an automatic draining function comprises a shell, a water inlet pipe and a hot water outlet pipe, and also comprises a normally opened water supplying valve, a normally closed draining valve, a temperature sensor and a controlling device; the water outlet end of the water supplying valve is connected with the water inlet end of the water inlet pipe; the water inlet end of the water supplying valve is communicated with a water source; the draining valve is communicated with the water outlet end of the water supplying end; the draining end of the draining valve is provided with a draining interface; the temperature sensor is arranged in the shell; the water supplying valve, the draining valve and the temperature sensor are connected with the controlling device. As such a structure is adopted, during use, a water source switch is opened, water of the normally opened water inlet valve enters a steam connecting valve and then enters a heat releasing and exchanging device; when the external temperature is lower and achieves the freezing point, the temperature sensor sends a signal to the controlling device, the normally opened water inlet valve is closed, the normally closed draining valve is opened, rest water in a heat exchanger is drained by the water inlet pipe and the normally closed draining valve; the fuel-gas fast anti-freezing water heater with the automatic draining function can achieve the aim of anti-freezing.