35results about How to "Solve the problem of ice blockage" patented technology

The invention relates to a double-stage and serial connection reactor synthesized by natural gas and hydrate relating to a synthesized reactor of natural gas and hydrate. The invention overcomes the defectiveness of the existing reactors of bubbling type that the hydrate is easily iced and blocked on the surface of an orifice plate and the defectiveness of the existing reactor of spraying type that the hydrate heat of reaction is difficult to be drained away. The double-stage and serial connection reactor consists of a No.1 reactor, a No.2 reactor, a water inlet pipe, a natural gas inlet pipe and a transfusion pipe. The No.1 reactor comprises a No. 1 autoclave body, a No. 1 spray device and an orifice plate device, with the No.1 spray device being arranged at the top of the inner chamber of the No.1 autoclave body and communicated with the water inlet pipe and the orifice plate being arranged at the bottom of the inner chamber of the No.1 autoclave body and communicated with the natural gas inlet pipe; the No.2 reactor comprises a No.2 autoclave body, a No.2 spray device and a stirring device, with the No.2 spray device being arranged at the top of the inner chamber of the No.2 autoclave body and communicated with the water inlet pipe and the stirring device being arranged at the bottom of the inner chamber of the No.2 autoclave body and the bottom of the No.2 autoclave body being communicated with the natural gas inlet pipe. The side wall of the No.1 autoclave body is communicated with that of the No.2 autoclave body.

The invention relates to a vacuum ice-making, refrigeration and cooling system for a mine shaft. A cooling tower, a water chilling unit, a water pump, a cooling water supply pipe and a cooling water return pipe form a cooling water heat removal circulation system. The water chilling unit, a vacuum ice-making machine, the water pump, a chilled water supply pipe and a chilled water return pipe form a cold water circulation system. The vacuum ice-making machine, an ice conveying device and a shaft ice conveying pipeline are connected with an underground ice thawing pool, and a cold water pump, a cold water supply pipe, a working face air cooler and a cold water return pipe form an underground ice-thawing, refrigeration and cooling circulation system. When the vacuum ice-making, refrigeration and cooling system works, the water chilling unit is used for making cold water at the temperature of 5 DEG C, the cold water is sent to the vacuum ice-making machine, the small part of the cold water is made into granular ice, and the greater part is the water at the temperature of 10 DEG C, which is returned to the water chilling unit for continuously making the cold water at the temperature of 5 DEG C. The granular ice is sent to the underground ice thawing pool for being thawed into the cold water at the temperature of 3 DEG C and sent to the working face air cooler for making cold air at the temperature of 12-18 DEG C, and the cold air is sent to a working place, thereby achieving the cooling purpose. The water absorbing the heat is returned to the underground ice thawing pool for being thawed into the granular ice. The structure is simple, the cost is low, the performances are stable, and the cooing effect is good.

The invention relates to heat exchanger equipment, and discloses an unfrozen heat exchanger for a liquefied natural gas (LNG) automobile air conditioner. The unfrozen heat exchanger comprises a multi-channel plate-fin LNG vaporizer and a plate-fin secondary refrigerant heat exchanger, wherein the multi-channel plate-fin LNG vaporizer consists of an LNG side inlet and outlet seal head, an overheated natural gas inlet and outlet seal head and a heat exchange plate bundle; the heat exchange plate bundle of the LNG vaporizer comprises an LNG side fin, an overheated natural gas side fin, clapboards, an end seal strip and two side plates; 5 heat exchange channels are formed among the clapboards; the plate-fin secondary refrigerant heat exchanger consists of a secondary refrigerant inlet and outlet seal head, a natural gas inlet and outlet seal head and a heat exchange plate bundle; the secondary refrigerant heat exchange plate bundle consists of an overheated natural gas side fin, a secondary refrigerant side fin, clapboards, an end seal strip and two side plates; and 17 heat exchange channels are formed among the clapboards. The unfrozen heat exchanger for the LNG automobile air conditioner can effectively solve the problem that a secondary refrigerant is frozen in the process of exchanging heat with LNG.

The invention discloses a refrigerator, which comprises a box body, a drainage pipe and a dew prevention pipe, wherein a refrigerated container liner and a cooling chamber liner are arranged in the box body; the refrigerated container liner is located above the cooling chamber liner; the drainage pipe is arranged in the box body, and is communicated with the refrigerated container liner so as to drain condensate water in the refrigerated container liner; the drainage pipe extends along the up-and-down direction; the dew prevention pipe is arranged in the box body; at least one part of the dew prevention pipe is in contact with the drainage pipe or is arranged close to the drainage pipe. According to the refrigerator provided by the invention, at least one part of the dew prevention pipe is arranged close to the drainage pipe, or at least one part of the dew prevention pipe is in contact with the drainage pipe, so that the drainage pipe can absorb the heat radiated by the dew prevention pipe, and the ice blockage problem of the drainage pipe is effectively solved.

The embodiment of the invention provides a low-temperature oil freezing prevention self-cascade refrigerating system and a control method thereof and relates to the technical field of refrigerating. The problems that lubricating oil enters an evaporator unit through an intermediate heat regenerator and lubricating oil ice blockage is caused can be solved. The system comprises a compression refrigerating device, an intermediate heat regenerator, a first throttling unit and an evaporator unit. A heat flow inlet of the intermediate heat regenerator is connected with a first outlet of the compression refrigerating device through a pipeline, and a heat flow outlet of the intermediate heat regenerator is connected to an inlet of the evaporator unit through the first throttling unit. A first cold flow inlet of the intermediate heat regenerator communicates with an outlet of the evaporator unit through a pipeline, and a cold flow outlet of the intermediate heat regenerator is connected with an inlet of the compression refrigerating device through a pipeline. A second outlet of the compression refrigerating device communicates with a second cold flow inlet of the intermediate heat regenerator through an oil freezing prevention unit. After the system is started, the oil freezing prevention unit is started to be in a bidirectional connecting state, and after the system is shut down, the oil freezing prevention unit is turned off to be in a unidirectional connecting state.

The invention discloses a gas-direct-contact-type ice slurry generator. The generator comprises a concentric annular spray-nozzle, a de-icer, a stirrer, a drive shaft, an ice outlet, and a driving motor. The concentric annular spray-nozzle is arranged at the lower end of a generator body. The drive shaft is arranged at the center of the generator body. The stirrer is arranged on the drive shaft. The driving motor is arranged above the generator body. The ice outlet is provided on the side wall on the upper part of the generator body. The upper end of the drive shaft is connected with the driving motor. The lower end of the drive shaft is connected with the de-icer. The de-icer comprises a support and de-icing blades. The de-icing blades are vertically arranged on the lower surface of the support. The support is provided with 1-3 arms. The lower ends of the de-icing blades extend into annular flow channels of the concentric annular spray-nozzle. The number of the de-icing blades on a single support arm is the same with that of the annular flow channels of the concentric annular spray-nozzle. An ice-making solution is provided in the generator body. With the generator provided by the invention, ice blockage can be effectively prevented, and system ice-making solution leakage can be reduced. The ice slurry is stirred, such that a heat exchange effect is reinforced. Therefore, the stable and highly efficient operation of the ice slurry preparation system is promoted.

The invention discloses a water pan which comprises a water receiving face and a bottom face. The included angle formed between the water receiving face and the horizontal plane ranges from 1 degree to 60 degrees. The tilt design of the water pan conforms to the water flow direction, and condensate water is better drained. The invention further provides an air energy water heater with the water pan. A drainage pipe is arranged between an inner container and a heat preservation layer, the outlet water temperature of the condensate water is increased, and the problem of ice blockage of the condensate water is solved at low temperature.

The invention relates to the technical field of gas injection in oilfield development and is applied to separate injection of CO2. According to the device provided by the invention, a tee of the device is separately connected to a general pipeline and two branch pipelines, the general pipeline is connected to a valve, a flowmeter and a pressure meter, and an adjustable pressure reducer, a differential gage, a thermometer and an emptying valve are also mounted on the branch pipeline I or/and the branch pipeline II. A heat exchanger is arranged on the general pipeline or the branch pipelines. The adjustable pressure reducer comprises more than two throttling nozzles which are mounted in series. The adjustable pressure reducer is provided with a baffle plate in the downstream part, aligned toa nozzle, of each throttling nozzle. The thermometer is mounted on a mounting assembly. The branch pipeline with the adjustable pressure reducer is connected to a gas injection tree interface which is low in gas injection pressure, and the injection flow can be adjusted by adjusting the sizes of the throttling nozzles. As more than two nozzles are mounted, a large throttling pressure difference is achieved by means of gradual pressure reduction. The ablation to the nozzles is small, the long-term accuracy of flow adjustment can be better guaranteed, and the mounted heat exchanger solves the problem of ice blockage.

The invention discloses a novel fluid damping device capable of coping with pressure jump. The novel fluid damping device comprises a hollow box body and a damping part, wherein the hollow box body isvertically placed, is in the shape of an inverted circular truncated cone, is coaxially provided with a pipeline outlet and a pipeline inlet at upper and lower ends as well as a connecting part for connecting a gas outlet pipeline to a gas inlet pipeline; the damping part is freely placed in the box body; when the damping part rises to be in contact with the pipeline outlet, close fit degree between the upper end of the damping part and the pipeline outlet is 30%-40%; and when the damping part drops to be in contact with the pipeline inlet, close fit degree between the lower end of the damping part and the pipeline inlet is 95%-100%. The novel fluid damping device is simple in structure, can retard pressure jump, effectively prevents backflow, is high in sensitivity, balances a device temperature, prevents an ice blockage phenomenon generated due to the fact that the temperature is too low, can reduce operation cost of enterprises, and improves benefits.

The invention discloses a condensation method oil gas recovery method and a recovery device. After being heated, oil gas to be treated sequentially flows through the deep cooler A, the shallow cooler A, the pre-condenser, the shallow cooler B and the deep cooler B; the heated to-be-treated oil gas is adopted to carry water generated during defrosting in the heat exchanger to the water storage tank, and defrosting liquid and condensed liquid enter the oil storage tank or the water storage tank in the gas flowing direction. Oil gas enters the deep freezer in a switching mode, continuous operation of the oil gas recycling process through a condensation method is achieved, hot refrigerant compressed gas is used for heating waste gas to be treated, the heated waste gas to be treated serves as a defrosting medium, and frosting cooling capacity is recycled. The method provided by the invention can effectively reduce the cooling water consumption and device energy consumption of the condensation method oil gas recovery device.