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

The invention discloses a dual-source heat-supply water-drainage antifreezing method for construction joint of tunnel in cold area, which adopts two energy resource forms of hot gas and electric energy to carry out heat supply and water drainage at the drainage passage of the construction joint in small range; and the hot gas and the electric energy can be used independently or in combination. Based on a drainage water stopper, the method provides a dual-source heat supply pipe to carry out heat supply and thaw in small range by section and time on the construction joint of the tunnel by using two energy resources of hot air and electric energy, prevents the drainage pipeline at the construction joint from being frozen and blocked, realizes effectively drainage, thus avoiding freezing damage to the construction joint of tunnel in cold areas.

The invention provides an intelligent solar water heater and belongs to the technical field of solar heating equipment. The intelligent solar water heater comprises a water tank, a control module (6), a water return pipeline (15) and a temperature sensor (13). A water tank water outlet (9) is connected with a hot water valve (16) through a water inflow/outflow pipeline (14). The lower end of the water return pipeline (15) is arranged on the water inflow/outflow pipeline (14). The upper end of the water return pipeline (15) is connected with the water tank through a solenoid valve (12). The water tank water outlet is provided with a water pump (5). The temperature sensor (13), the water pump (5) and the solenoid valve (12) are connected with the control module (6) through control lines. The temperature sensor (13) is used for detecting the temperature of the water inflow and outflow pipeline (14) or the temperature of the water return pipeline (15). According to the intelligent solar water heater, the information of water flow and the temperature in the hot water pipeline are monitored through a water flow sensor and the temperature sensor, whether a user uses hot water or not is judged, starting or stopping of a boosting pump and the solenoid valve is controlled, and the purposes of being free of cold water, achieving boosting through hot water and preventing freezing are achieved.

The embodiment of the invention provides an antifreeze diversion device of an air cooling radiator of a natural ventilation cooling tower. Mainly, the air inlet of the air cooling radiator is horizontally or obliquely formed in the natural ventilation cooling tower, the air cooling radiator is placed on the air inlet, or the air cooling radiator and the air inlet are arranged with a certain included angle in between; the antifreeze diversion device is arranged in the air cooling radiator non-air-inlet area at the tower cylinder bottom of the natural ventilation cooling tower, and fed air at the tower cylinder bottom of the natural ventilation cooling tower is adjusted through the antifreeze diversion device. In winter, cold air can enter the cooling tower through the antifreeze diversion device without flowing through the air cooling radiator, and sucking force of the cooling tower is remarkably reduced. By means of the antifreeze diversion device, the natural ventilation sucking force of the air cooling tower can be effectively controlled, the windward air velocity of the air cooling radiator is adjusted, the risk that circulating cooling water in the air cooling radiator is frozen in winter is reduced, and the running safety and economy of an air cooling power generator set are improved.

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.

The invention discloses an anti-freezing method for a cold region water conservancy project road tunnel. The method comprises: 1, building a gate slot on a road tunnel portal, and then mounting a hardrapid lifting gate in the gate slot; 2, arranging induction devices on positions in an out of the road tunnel, the distance between the position and the gate slot being a set distance, when a vehiclepasses through the induction device, the hard rapid lifting gate lifting up; 3, arranging manual buttons used to control the hard rapid lifting gate to lift in and out of the gate slot. The method isdesigned for road tunnels used in cold region water conservancy projects. When no vehicle travels, the tunnel portal is sealed by the hard rapid lifting gate, and temperature in the tunnel is greatlyincreased under the action of ground temperature, and temperature in the tunnel is closed to ground temperature, so as to ensure the back of road tunnel lining and drainage ditches not to freeze, andachieve an objective of road tunnel anti-freezing. Therefore, for road tunnels used in cold region water conservancy projects, according to the method, heat insulation boards and a deeply buried center drainage ditch used in a conventional road tunnel are not needed.

The invention provides a constant-humidity and constant-oxygen gravity all heat recovery anti-freezing fresh air unit and an air conditioner, and belongs to the field of air conditioners. The constant-humidity and constant-oxygen gravity all heat recovery anti-freezing fresh air unit comprises a heat recovery module, a humidity adjusting module, a first reheat recovery surface cooler, a second reheat recovery surface cooler, a main surface cooler, a filter module, a fan and an external cold and hot source; the first reheat recovery surface cooler, the humidity adjusting module, the main surface cooler, the second reheat recovery surface cooler, the fan and the filter module are arranged on one side of the heat recovery module in sequence; the main surface cooler is connected with the external cold and hot source; and an output end of the fan is arranged towards the filter module. Outdoor low-temperature air of a split anti-freezing gravity all heat recovery device firstly passes through a saline solution heat recovery device; fresh air recovers heat of indoor exhausted air of 20 DEG C; and outdoor fresh air is preheated and humidified, enters the saline solution for further heatingand humidification, and enters the heat supply surface cooler for heating to send into rooms, so that the air conditioner still can be started when outdoor temperature is lower than 0 DEG C.

The invention discloses an anti-freezing heat exchange device which comprises a box body, a heat exchanger core body, a water inlet flute pipe, a water outlet flute pipe and a fan, wherein the heat exchanger core body is arranged in the box body and is of a copper sleeve fin-type structure; the water inlet flute pipe is connected with the water inlet end of a copper pipe of the heat exchanger core body; the water outlet flute pipe is connected with the water outlet end of the copper pipe of the heat exchanger core body; the fan is arranged on the box body, is positioned at one side of the heat exchanger core body and can blow air towards the heat exchanger core body; the water inlet flute pipe is provided with a water inlet part extending out of the box body and an air release valve; and the water outlet flute pipe is provided with a water outlet part extending out of the box body and a drain valve. The anti-freezing heat exchange device has a simple structure, is easy to implement and has a good heat exchange effect; residual water in the heat exchanger core body can be well drained; and the anti-freezing heat exchange device has a good anti-freezing function.

The invention discloses a cooling triangular unit with a rotating plate type flow-equalizing and anti-freezing integrated device. The cooling triangular unit comprises a cooling triangular unit body and the rotating plate type flow-equalizing and anti-freezing integrated device. The cooling triangular unit comprises a left side cooling column, a right side cooling column and an air inlet shutter. The rotating plate type flow equalizing and anti-freezing integrated device comprises a vertical rotating shaft, an upper arc-shaped sliding way, a lower arc-shaped sliding way, a vertical moving shaft and a rotating plate. According to the cooling triangular unit with the rotating plate type flow equalizing and anti-freezing integrated device, the angle between the rotating plate and the cooling column can be adjusted according to the environment wind speed and direction, and then the purposes of flow equalizing and anti-freezing are achieved. In summer, the rotating angle of the rotating plate can be adjusted so that the rotating plate can coincide with the vertical central symmetry face of the cooling triangular unit, and the flow equalizing effect on the cooling triangular unit is achieved. In winter, when the environment wind speed is large and the air inlet inclination angle is large, the rotating angle of the rotating plate can be adjusted, the environment wind is prevented from positively impacting the cooling column, and the anti-freezing effect on the cooling triangular unit is achieved.

The invention belongs to the technical field of fire-fighting fluids and particularly relates to an environment-friendly anti-freezing corrosion-resistant fire-fighting fluid and a preparation methodthereof. The environment-friendly anti-freezing corrosion-resistant fire-fighting fluid is prepared from, by mass, 8-50% of magnesium chloride, 6-50% of magnesium acetate, 5-15% of calcium chloride, 5% of potassium bicarbonate, 6-14% of carbamide, 0.24-0.55% of phytic acid, 0.05-0.33% of fatty alcohol polyvinyl ether, 0.05-0.31% of hexadecylamine, 0.005%-0.1% of sodium polyacrylate and 25.5-67% ofwater, wherein the sum of the mass percentages of the above components is 100%. The environment-friendly anti-freezing corrosion-resistant fire-fighting fluid can replace an electric tracer heating system, achieves the anti-freezing purpose of a water fire-fighting pipeline in winter, and simultaneously plays the good effect in reduction of the engineering cost of the electric tracer heating system and reduction of the electric energy consumption in a later period.

The invention relates to a finned-tube bundle freezing prevention device for a direct air-cooling unit of a power station. The freezing prevention device comprises an inverted-V-shaped finned-tube bundle and an axial flow cooling fan, wherein the axial flow cooling fan is arranged just below the inverted-V-shaped finned-tube bundle through a fan bridge frame, the fan bridge frame below the inverted-V-shaped finned-tube bundle is provided with a conical support, a nylon net is sleeved on the outer side of the conical support and comprises an upper layer nylon net, a middle layer nylon net and a lower layer nylon net, and the porosities of the upper layer nylon net, the middle layer nylon net and the lower layer nylon net are reduced gradually. The finned-tube bundle freezing prevention device provided by the invention is reasonable in construction, firm in connection and easy to disassemble and assemble, can effectively improve the distribution of cold air in the air cooling unit, fulfills the purpose that the headwind speed of the finned-tube bundle is gradually reduced from top to bottom, does not completely hinder inlet air at a fan, and can effectively alleviate the situation that the middle and lower parts of the tube bundle are easy to freeze in winter and improve the security and economy of the operation of the unit.

The invention discloses a novel intelligent anti-freezing system. The novel intelligent anti-freezing system comprises a power source and a single-chip microcomputer, wherein a temperature detection switch is arranged on the single-chip microcomputer, a main valve is arranged on a main pipeline, the main pipeline communicates with at least one branch pipe, an electromagnetic valve is arranged on the branch pipe, a water outlet button is arranged at a water outlet of the branch pipe, the branch pipe communicates with a water drainage pipe, the water drainage pipe is provided with a water pump and a first electromagnetic valve, the water pump and the first electromagnetic valve are both provided with time relays, the temperature detection switch is connected with a delay switch, the pump, the first electromagnetic valve and the main valve are all connected with the delay switch, and the power source supplies power to the temperature detection switch, the water outlet button, the electromagnetic valve, the time relays, the pump, the first electromagnetic valve, the main valve and the delay switch. The device is simple in structure, high in intelligent degree, good in using effect, wide in range of application, environmentally friendly, capable of saving energy, and simple and easy in transforming original equipment.