31results about How to "Achieve natural circulation" patented technology

The invention relates to an intelligent ecological fish-vegetable intergrowth culture box, which comprises an LED (light emitting diode) plant growth lamp (1), a plant growth tray (2), an aquatic animal culture area (3) and an aquatic plant cultivation tray (4). The LED plant growth lamp (1) is hung above the culture box through a barb member, the plant growth tray (2) is connected to the aquatic plant cultivation tray through five cylinders, the aquatic animal growth area (3) is the space of the culture box, the aquatic plant cultivation tray (4) can be paved with filter materials such as perlite, cobblestone and active carbon. The LED plant growth lamp (1) adopts a wireless network signal receiver to receive the light quality of a computer host, and the light source is automatically adjusted through a luminescence signal. The plant growth tray (2) is in a barrier form, and materials such as sponge, foam plates and fibers can be used as the culture medium. The aquatic animal culture area (3) is provided with an EC sensor, a water level adjusting device and a temperature sensor. The intelligent ecological fish-vegetable intergrowth culture box is used for the planting and cultivation in high mountains, grassland, plant factories, greenhouses, households and regions which are lack of water.

The invention discloses a quick draining pavement structure for urban low-lying roads. The structure comprises a pavement motor way surface layer, a flexible base is arranged below the pavement motor way surface layer, soil base is arranged below the flexible base, a water-resisting layer is arranged between the flexible base and the soil base, and one flexible base side facing the soil base is design as a stepped structure. The stepped surface at a road section low-lying part is high, and the stepped surface at a road section high convex part is low, if the height of some stepped surface is lower than those of two adjacent stepped surfaces, or some stepped surface only has one adjacent stepped surface and the stepped surface is lower than the adjacent stepped surface, a gravel drainage channel can be disposed below the stepped surface, and a filter layer is arranged between the flexible base and the gravel drainage channel. The quick draining pavement structure provided by the invention can solve the technical problems of impeded pavement drainage and easy waterlogging in existing urban road low-lying areas, and is especially suitable for paving of urban roads with large elevation difference between adjacent road sections.

The invention discloses a micro flow velocity measuring device, a thermal hydraulics experiment table with the same and a method, which belong to the field of metering equipment. By arranging a Venturi flow measuring pipe and a rotor flow velocity measuring device, the original micro flow velocity can be amplified through the Venturi throat pipe section, and then the flow velocity in the pipe is reflected through the rotating speed of the rotor flow velocity measuring device. According to the rotor flow velocity measuring device, through a special adjusting air cavity structure, the buoyancy of the rotor flow velocity measuring device can be adjusted by changing the volume of an adjusting air cavity in the flow velocity measuring process, the whole rotor flow velocity measuring device cansuspend in to-be-measured fluid, a second sleeve and a center shaft can relatively rotate in a contactless mode in an ideal state, and friction force is reduced as much as possible. Therefore, the micro flow velocity measuring device can be suitable for measuring the micro flow velocity. In addition, the invention further provides the thermal hydraulics experiment table, natural circulation can beachieved, the internal flow velocity can be accurately adjusted, and the thermal hydraulics experiment table is suitable for tests of the equipment at different flow velocities.

A movable drying loss prevention freezing display cabinet solves the problems that an existing refrigerating show case is difficult to move as a whole, the decoration and display effect is poor, brightness is not enough, drying loss is severe if unpacked frozen food is displayed in the case, and food quality and shelf life are affected. The display cabinet is technically characterized by comprising a sunshade, supporting columns and an open frame provided with universal wheels and composed of a front cabinet body, side cabinet bodies and a control panel, the outer side faces of the cabinet bodies are provided with brightening belts and a lamp box, and the brightening belts are provided with LED light sources. A drying loss prevention protective cover of a combined structure is placed in a transparent display window of an air cooling type movable horizontal freezer. The display cabinet is reasonable in structural design, easy to move as a whole, high in lighting brightness and low in energy consumption, and maintains the advantages of the good propaganda and display effect of the air cooling type movable horizontal freezer; overall appearance attractiveness is added, drying loss of the unpacked frozen food is effectively reduced, shelf life of the food is greatly prolonged, and the quality of the frozen food is guaranteed.

The invention relates to treatment equipment for synchronous nitrogen and phosphorus removal of domestic sewage. The equipment comprises an anaerobic zone, an anoxic zone, an aerobic zone and a mixing zone that pretreated domestic sewage enters in order. The bottom of the equipment is also provided with a precipitation zone for precipitating and discharge of precipitates. With no need for pipeline connection, the treatment equipment for synchronous nitrogen and phosphorus removal of domestic sewage can solve the refluxing problem of a mixed solution to reach the standards of reclaimed water refluxing.

The invention discloses a self-circulation air cathode microbial fuel cell based on bubble buoyancy and a method. The self-circulation air cathode microbial fuel cell based on bubble buoyancy comprises an anode chamber and a cathode chamber; the cathode chamber is located above the anode chamber, and the cathode chamber communicates with the anode chamber; the self-circulation air cathode microbial fuel cell is characterized in that the upper part of the cathode chamber has a taper with a small upper part and a large lower part, a vapor-liquid outlet is formed in a top end of the cathode chamber, and the vapor-liquid outlet communicates with a storage device arranged above the cathode chamber through a first pipeline; the inside diameter of the first pipeline is the same as the diameter of a bubble generated by a bubbling sieve, and the storage device communicates with the anode chamber through a second pipeline; according to the self-circulation air cathode microbial fuel cell disclosed by the invention, the density difference of working media is used as the transmission power of substance, an air pump and height difference are fully used to realize the natural circulation of the substance, the cell performance is improved, the operation cost is reduced, and the purpose of reducing the energy consumption is achieved; and the self-circulation air cathode microbial fuel cell can be widely used in the fields of energy, chemical industry, environmental protection, etc.

The invention provides a medium device used for a solar water heater, comprising a medium box and a heat collector which are communicated with each other; wherein, the medium box is internally arranged in the water tank; the medium inlet is connected with an expansion tank; the heat collecting pipe is a 'U'-shaped heat collecting pipe; and the water tank is communicated with the metal pipeline of the U-shaped heat collecting pipe by a pipeline. The medium device utilizes the characteristic that the medium runs without water and is impossible to generate scale and can keep high heat efficiency permanently; the medium inlet is provided with the expansion tank; and during the natural circulation, if tap water stops for a long time, the expansion tank can realize storing energy, prevent the loss of the medium which is arranged under the high temperature for a long time and ensure the sufficient utilization of the medium. The medium device used for the solar water heater can achieve the self-circulation of the medium and eliminate the leakage phenomenon of the medium.

The invention relates to the technical field of nuclear reactors, and provides a marine nuclear power platform waste heat removal system which comprises a heat exchange channel, a waste heat circulation loop and a bubble generation device. A liquid inlet and a liquid outlet are formed in the heat exchange channel in the extending direction of the heat exchange channel, and the liquid outlet is formed above the liquid inlet; a cooling fluid is introduced into the heat exchange channel; the waste heat circulation loop is used for introducing a coolant of the reactor, and the coolant is coupled with cooling fluid for heat transfer; an air outlet of the bubble generating device is communicated with the heat exchange channel; bubbles generated by the bubble generating device are used for forming a mixture with the cooling fluid in the heat exchange channel, and the mixture is discharged through the liquid outlet. According to the invention, through the bubbles generated by the bubble generation device, the heat exchange efficiency between the coolant and the cooling fluid is improved under the condition that the reactor is shut down, so that the waste heat of the reactor core can be quickly discharged.

The invention relates to a self-cleaning heat exchanger. The self-cleaning heat exchanger comprises a discharge pipeline 1, a solid-liquid separation pipe box 2, a tubular heat exchanger 3, a particlecirculating pipe 4, a particle adjusting valve 6, a guide barrel 7, a material inlet 9 and a particle mixer 10. Self-cleaning of the heat exchanger is carried out through dead-weight outer circulation of solid particles, the problems about scaling in the operation process of the heat exchanger and separation circulation of the solid particles are fundamentally solved, and the effects that no scaling or fouling is generated in the operation process of the heat exchanger, and it is guaranteed that the heat exchanger efficiently runs in an energy-saving manner are achieved. Separation and storage of the solid particles and end sealing of the heat exchanger are combined, so that the structure of the self-cleaning heat exchanger is simplified.

The invention discloses an ecological flowerpot. The ecological flowerpot comprises a fish tank, a flowerpot body and a lifting mechanism. A filtering board is fixed to the middle of the fish tank, a plurality of filtering holes are formed in the filtering board, the flowerpot body is fixed to the center of the filtering board, a lifting hole and a mud-discharge hole are formed in the bottom of the flowerpot body, the lifting hole is formed in the center of a base board of the flowerpot body, and an object-beating hole is formed in the edge of the base board of the flowerpot body. The lifting mechanism comprises a lifting rod and a supporting base, continuous spiral fins are arranged on the surface of the lifting rod, the supporting base comprises a circular hole A formed in the bottom of the fish tank and a supporting frame arranged at the top end of the flowerpot body, the supporting frame is a hollowed board, a circular hole B is formed in the middle of the supporting frame, the lifting rod is fixed by the circular hole A and the circular hole B, the lifting rod can rotate through the circular hole A and the circular hole B, and the diameter of the lifting hole is larger than the outer diameter of the fins. The ecological flowerpot can achieve self-cycling of nutrient substances, and has good practicality.

The invention relates to a high-pressure hydrolysis self-circulating device for oil, comprising a heating furnace, a bottom coil arranged in the heating furnace and communicated with the lower end of a hydrolysis tower through a feeding pipe, more than 10 discharging holes evenly arranged on the bottom coil, a standpipe arranged at the upper end in the heating furnace and communicated with the upper end of the hydrolysis tower through a discharging pipe, more than 10 feeding holes evenly arranged on the standpipe, and more than 10 vertical pipes distributed evenly and communicated with the feeding holes on the standpipe and the discharging holes on the bottom coil. The high-pressure hydrolysis self-circulating device for oil can automatically complete circulation, save electricity and energy without the phenomena such as escaping, bursting, dripping and leakage and has high safety factor.

The invention discloses a water seepage structure of a road with a waterproof road surface and a transformation method, and belongs to the field of municipal engineering. The water seepage structure comprises a plurality of water seepage pipes with water seepage holes in the periphery, a water seepage ditch is arranged at one end of each water seepage pipe, filter nets are arranged on pipe openings and orifices of the water seepage pipes, the water seepage pipes are arranged below a road rammed earth layer, the water seepage ditches are arranged below a green belt or a sidewalk, the bottoms of the water seepage ditches are backfilled with stone or sand, the top layers of the water seepage ditches are provided with green belts or cement bricks, the water seepage ditches are communicated with the curb, overflowing openings are formed in the water seepage ditches, road water overflowing can be relieved by means of the water seepage structure and construction method, disaster caused by unsmooth road accumulated water is avoided, the road water seepage speed and water seepage total quantity are improved, the underground conservation is improved, the modification cost is lowered, and the building cost is saved.

The invention belongs to the technical field of solar and biomass energy utilization and in particular relates to an overground solar methane tank capable of realizing natural circulation of a hot water system. According to the overground solar methane tank, the natural circulation of the solar hot water system is realized by virtue of a siphon force generated by density difference of cold and hot water, the fermentation temperature of methane in a methane fermentation tank is increased, and the rate of methane production by fermentation is increased. The overground solar methane tank comprises the solar hot water circulation system and the methane fermentation tank, wherein the solar hot water circulation system comprises a solar heat collector, an ascending pipe, a heat storage water tank, a descending heat dissipation pipe set, a water return and collection tank and a water return pipe; a water outlet in the top of the solar heat collector is communicated with the heat storage water tank through the ascending pipe; the heat storage water tank is communicated with the water return and collection tank through the descending heat dissipation pipe set; the water return and collection tank is communicated with a water inlet in the bottom of the solar heat collector.

The invention discloses a using-procedure-free low-nitrogen condensation type fuel gas steam boiler. The using-procedure-free low-nitrogen condensation type fuel gas steam boiler comprises a chimney,a boiler prying platform base, an integrated energy economizer and condenser, a low-nitrogen burner, a steam valve, a safety valve, a boiler body (including fins, smoke guide plates, an upper collection box, a lower steam-water separator, a lower collection box, an upper steam-water separator, a water inlet and vertical pipelines), an independent downcomer, a water tank, a water feed pump, a liquid level controller and a boiler control cabinet. According to the using-procedure-free low-nitrogen condensation type fuel gas steam boiler, a wall smooth pipe serves as a heat exchanging water pipe,a water pipe with the surface connected with the thick fins in a welded manner serves as a heat exchanging pipe, and the heat exchanging area is increased by 2 times under the same length of the waterpipe; according to the boiler, the service life is prolonged, and the conversion efficiency is also improved; the steam-water separation effect is good, and high-quality steam is obtained; using is convenient, the using range is also enlarged, the energy loss can also be reduced, and meanwhile the discharge amount of nitric oxide is also reduced.

The invention discloses a circulating condensation boiler. The circulating condensation boiler comprises a boiler body, the lower side and the upper side of the right end of the boiler body are fixedly connected with a water inlet and a water outlet respectively, the boiler body communicates with the water inlet and the water outlet correspondingly, a gas furnace is installed below the inner partof the boiler body, the outer wall of the left side of the gas furnace is connected to the inner wall below the left side of the boiler body in a sleeving mode, the right end of the gas furnace communicates with the left end of a pressure reducing valve, and the outer wall of the middle of the pressure reducing valve is connected to the inner wall below the right side of the boiler in a sleeving mode. According to the circulating condensation boiler, odor removing for smoke is carried out through two activated carbon plates, filtering impurities in the smoke is carried out through two filter plates, the qualified smoke is exhausted to the atmosphere through a smoke outlet, and the problem that in the using process of the existing circulating condensation boiler, although a condensation type boiler condenses water vapor in the smoke, the harmful substances in the flue gas can be conveniently removed, impurities and odor in the smoke can still bring health problem to people and the atmosphere is solved.

The invention relates to the technical field of furniture, and in particular relates to an automatic temperature control water heating bed. In winter, the temperature is relatively low, people usually use tools such as electric blankets and the like to get warm, and the tools are high in energy consumption and uncomfortable in use and have potential safety hazards. The automatic temperature control water heating bed comprises a bed head, a bedstead, a mattress, an electric heating device, a circulating component and a radiating pipe, wherein the radiating pipe is embedded in the mattress; a water outlet in the upper end of a heating water jacket of the circulating component is connected with a water inlet of the radiating pipe through a water pipe and a valve, and is also connected with an exhaust valve; an overflow pipe is connected to a pipeline between the water outlet of the water jacket and the valve and is connected with a water tank; the lower part of the water tank is connected with a backwater port of the heating water jacket through a water pipe; a water outlet of the radiating pipe is connected to a pipeline between the backwater port of the water jacket and the water tank. The automatic temperature control water heating bed disclosed by the invention is simple in structure, and the mattress has functions of heating and heat preservation, so that the automatic temperature control water heating bed replaces the conventional heating equipment including heated brick beds, electric blankets and the like; a water circulating system is reasonable in design, hot water is circularly heated naturally, a water pump is not needed, and the temperature is constant, so that the automatic temperature control water heating bed is convenient, safe and reliable in use.

The invention discloses a quick draining pavement structure for urban low-lying roads. The structure comprises a pavement motor way surface layer, a flexible base is arranged below the pavement motor way surface layer, soil base is arranged below the flexible base, a water-resisting layer is arranged between the flexible base and the soil base, and one flexible base side facing the soil base is design as a stepped structure. The stepped surface at a road section low-lying part is high, and the stepped surface at a road section high convex part is low, if the height of some stepped surface is lower than those of two adjacent stepped surfaces, or some stepped surface only has one adjacent stepped surface and the stepped surface is lower than the adjacent stepped surface, a gravel drainage channel can be disposed below the stepped surface, and a filter layer is arranged between the flexible base and the gravel drainage channel. The quick draining pavement structure provided by the invention can solve the technical problems of impeded pavement drainage and easy waterlogging in existing urban road low-lying areas, and is especially suitable for paving of urban roads with large elevation difference between adjacent road sections.

A self-locking vehicle roof, comprising a push-pull guide rod, a guide plate and a slider, the guide plate is fixed on the roof, one end of the push-pull guide rod is hinged on the vehicle frame assembly, and the slider is fixed At the other end of the push-pull guide rod, the slider is slidably arranged on the guide plate; the guide plate is provided with a sliding part and a self-locking part, and the sliding part is parallel to the top Extending in the direction of the side of the cover, the self-locking part is formed by extending vertically from one end of the sliding part to the outside of the vehicle; the sliding part can reciprocate along the sliding part in a direction parallel to the side of the top cover After sliding and sliding into the self-locking part along one end of the sliding part, the two vertical side walls of the self-locking part restrict the movement of the sliding part in the extending direction of the sliding part. The whole operation is simple, labor-saving and smooth, and when the top cover is opened, when driving on a bumpy road, the self-locking is firm, without shaking, noise and other phenomena.

A self-locking type vehicle top cover comprises a push-and-pull guide rod, a guide plate and a sliding member; the guide plate is fixed at the top cover; one end of the push-and-pull guide rod is hinged to a vehicle frame assembly; the sliding member is fixed at the other end of the push-and-pull guide rod and slidably arranged on the guide plate; the guide plate is provided with a sliding portion and a self-locking portion, the sliding portion extends in a direction parallel to one side edge of the top cover, and the self-locking portion is formed in a manner that one end of the sliding portion vertically extends towards an outer side of a vehicle; and the sliding member is capable of sliding to and fro along the sliding portion in the direction parallel to the side edge of the top cover, and the sliding member is limited by two vertical side walls of the self-locking portion to move in the extension direction of the sliding portion after the sliding member slips into the self-locking portion along the sliding portion. The whole operation is simple, laborsaving and smooth, and under the condition that the top cover is opened, when the vehicle is driven to a bumpy road, the top cover can be firmly self-locked without jitter and noise or the like.

The invention discloses a self-circulation air cathode microbial fuel cell based on bubble buoyancy and a method. The self-circulation air cathode microbial fuel cell based on bubble buoyancy comprises an anode chamber and a cathode chamber; the cathode chamber is located above the anode chamber, and the cathode chamber communicates with the anode chamber; the self-circulation air cathode microbial fuel cell is characterized in that the upper part of the cathode chamber has a taper with a small upper part and a large lower part, a vapor-liquid outlet is formed in a top end of the cathode chamber, and the vapor-liquid outlet communicates with a storage device arranged above the cathode chamber through a first pipeline; the inside diameter of the first pipeline is the same as the diameter of a bubble generated by a bubbling sieve, and the storage device communicates with the anode chamber through a second pipeline; according to the self-circulation air cathode microbial fuel cell disclosed by the invention, the density difference of working media is used as the transmission power of substance, an air pump and height difference are fully used to realize the natural circulation of the substance, the cell performance is improved, the operation cost is reduced, and the purpose of reducing the energy consumption is achieved; and the self-circulation air cathode microbial fuel cell can be widely used in the fields of energy, chemical industry, environmental protection, etc.

The invention discloses self-circulation culvert type natural ventilation equipment, which comprises a straight-through wind pipe for communicating the internal environment with the external environment of a house, wherein straight-through wind pipe is divided into a first passage and a second passage which are longitudinally symmetrical with each other by a baffle plate which is horizontally arranged along the axial direction of the straight-through wind pipe; the first passage and the second passage are communicated with an upward first wind gap and a downward second wind gap respectively by getting close to the inside of the house; and the first wind gap and the second wind gap are provided with linkage switch valves. The self-circulation culvert type natural ventilation equipment performs air convection by using indoor and outdoor heat pressure differences to ensure that hot air flows indoors from one passage and indoor cold air is discharged out from the other passage so as to realize the natural circulation of fresh air feeding and discharging without additional powder, and controls the outdoor fresh air volume introduced indoors to reduce air-conditioning cooling load or heating thermal load losses caused by excessive fresh air introduction so as to meet requirements on energy saving; besides, the self-circulation culvert type natural ventilation equipment has the functions of thermal insulation, sound insulation, dust prevention and insect prevention.

The invention discloses a natural non-circulating current control method for an on-load voltage regulating transformer without transition resistance, comprising the following steps: Step 1. Divide the possible conduction states of each power electronic switch in a voltage regulating unit into a secondary voltage of the transformer in a steady state Conduction state 1, conduction state 2, and conduction state 3 that increase in turn; step 2, collect the voltage and current of the primary side, and judge whether “boost” or “step-down” is needed according to the calculated RMS value of the voltage; step 3. If "step-up" or "step-down" is required, adjust the reactive current command of the load property control unit; step 4. Continuously check the voltage and current status of the primary side of the transformer, when both meet the "natural no circulating current" condition. When switching conditions, the corresponding state switching process is executed; the present invention can solve the short-circuit problem in the process of on-load voltage regulation without transition resistance, and at the same time can avoid the connection of the transition resistance in the process of on-load voltage regulation. losses and output voltage "sags" or "swells".

The invention relates to a mechanical-assisted self-cleaning evaporation concentrator and an evaporation concentration method. The mechanical-assisted self-cleaning evaporation concentrator comprisesan evaporation tank, a circulating pump, a shell-and-tube heat exchanger, a particle circulating pipe, a feed liquid circulating pipe, a particle adjusting valve, a guide cylinder, a reflux cylinder and a vapor-liquid separator. According to the invention, the scaling problem in the production and operation of the evaporation and concentration device is fundamentally solved, so that the evaporation and concentration device is free of scaling and pollution blockage in the operation process, and the efficient and energy-saving operation of the evaporation and concentration device is maintained.

The invention relates to a feed water degasifier comprising a degasifier (8) with a feed water tank (1) connected thereto, said components being integrated into the water / steam cycle of a solar thermal power station that has a heat transfer medium circuit with an associated water / steam cycle. The aim of the invention is to provide a solution, which in terms of the heating and control process provides a less complex way of supplying the degasifier with heating steam in comparison with prior art. To achieve this, at least one additional evaporator (11), which has a line connection (12) on the water side to the feed water region (5) of the feed water tank (1) and a line connection (13) on the steam side to the steam region (6) of the feed water tank (1), is allocated to the feed water tank (1).

The invention provides a sewage treatment method capable of realizing natural absorption and natural circulation. According to the method, domestic sewage flows into a natural ecological area, trees,grass, soil, ditches, animals and microorganisms in the area cooperate with one another to absorb and digest organic pollutants in the domestic sewage so as to obtain treated purified water, and the process is a natural absorption process; and meanwhile, because pollutants in water can continuously provide nutrient substances for the animals and the plants, the plants in the area can rapidly grow,the animals can rapidly breed and are used in life and production of people, and the process is a natural circulation process. As the method is used for treating the domestic sewage, the method has the advantages of being low in resource consumption, safe to use and free of secondary pollution, ecological circulation and economic circulation can be achieved, and the ecological environment can beimproved fundamentally.

The invention relates to a method for reducing energy consumption of an oxidation unit of an epoxy propane device and mainly solves the problem of high energy consumption in the prior art. The method comprises the following steps: a raw material of isopropyl benzene enters an oxidation tower to be in contact with air for oxidation reaction to generate a material flow comprising cumyl hydroperoxide; one part of a liquid phase material flow at the top of the oxidation tower passes through a cooler and then directly returns back to the bottom of the oxidation tower through a circulation pipeline, and the other part of the liquid phase material flow enters the next level of oxidation tower or the next section; wherein a circulating pump is not arranged on the circulation pipeline, but natural circulation is realized through the density difference of gas-liquid phase material flows in the oxidation tower and the liquid phase material flow in the circulation pipeline. The method can be used in epoxy propane production.

The invention discloses a steam generating device for a high-power solar-thermal power station, and relates to the field of electric power and chemical engineering systems. The device solves the problems that traditional kettle-type reboilers used by existing high-power heat exchange power stations are difficult to manufacture with high cost and low steam quality. A steam drum of the device is horizontally mounted above an evaporator A and an evaporator B in a parallel mode. One end of the steam drum is provided with a feed-water inlet, and the feed-water inlet is communicated with a water storage area of the steam drum. The upper part of the steam drum is provided with a plurality of steam outlets along the axis of the steam drum. The water storage area inside the steam drum is respectively communicated with the upper parts of the evaporator A and the evaporator B through a plurality of downward pipes. The bottoms of the evaporator A and the evaporator B are respectively communicatedwith a steam-water separation area inside the steam drum through a plurality of upward pipes. Air outlets formed on the steam-water separation area are communicated with the steam outlets formed on the steam drum. Water outlets formed on the steam-water separation area are communicated with the water storage area inside the steam drum. The device is used for realizing natural steam circulation under a non-heated state of the upward pipes.