252 results about "Water state" patented technology

The invention discloses a control method and a control device of a water heater, wherein the control method of the water heater comprises the following steps: distinguishing biological characteristics of an current water heater user; obtaining the historical outlet water temperature when the user uses the water heater according to the distinguished biological characteristics of the current water heater user; detecting the current hot water temperature and the current cold water temperature of the water heater; determining the target openness of the proportional valve according to the historical outlet water temperature, the current hot water temperature and the current cold water temperature, wherein the proportional valve is used for mixing cold and hot water; and controlling the current outlet water state when the user uses the water heater according to the target openness of the proportional valve, wherein the current water outlet state comprises the current water outlet flow rate and/or the current outlet water temperature. The control method and the control device can be used for solving the problem that the outlet water with high water temperature precision cannot be provided based on different users when the water heater is used in the associated technology is solved.

The invention discloses an electric food warmer and a method thereof for automatically identifying a water state after dry burning. The electric food warmer comprises a pot body, a cover and an liner arranged in the pot body, wherein a heating device, a bottom temperature measuring device for detecting the temperature of the liner and a control device are arranged in the pot body; the control device comprises a main controller, and a counter, a temperature storage, a measurement time storage, a decision value storage, a temperature variation storage and a timer, which are connected with the main controller respectively; the output end of a temperature sensor is connected with the input end of the main controller; and the output end of the main controller is electrically connected with a heating device. Whether water adding action is performed after dry burning is judged according to the velocity of variation of the measured temperature, an alarm is given, and the electric food warmer is converted into a safety mode; and thus, a safety hazard caused by long-term dry burning is avoided, and the phenomenon that food is undercooked as the electric food warmer enters the safety mode immediately upon the detection of drying burning is eliminated. The method disclosed by the invention is simple and accurate in measurement, and is suitable for electric cookers, electric slow cookers, electric fire pots and other electric food warmer products.

The invention discloses a control method for preventing dry burning of an electric water heater. The control method comprises the following steps of obtaining a threshold value of temperature rising speed; detecting the temperature of an inner container of the electric water heater, and calculating the temperature rising speed according to the temperature of the inner container; judging whether the electric water heater is in dry burning or not according to the temperature rising speed and the threshold value of the temperature rising speed; controlling the electric water heater to stop heating if the electric water heater is in dry burning; updating the threshold value of the temperature rising speed according to the temperature rising speed if the electric water heater is not in dry burning. According to the control method for preventing the dry burning of the electric water heater, disclosed by the invention, the electric water heater can be prevented from being subjected to the dry burning for a long time under a no-water state, and the misjudgment of the dry burning can be avoided. The invention also discloses the electric water heater adopting the control method.

The invention discloses a robot for detecting underwater topography and a water quality index in a reservoir area. The robot comprises a ground base station system and a robot system. The ground base station system is arranged on shore, the robot system is arranged in water, the ground base station system is connected with the robot system through a cable, and the robot system is controlled to work through the ground base station system; the work states of the robot system comprise the on-water state and the underwater state and when an underwater topographic map needs to be drawn, the work state of the robot system is the on-water state; when the underwater water quality index needs to be detected and underwater images need to be obtained, the work state of the robot system is the underwater state. The GPS technology and the ADCP technology are combined by the multifunctional robot and the robot is small in size, light in weight, low in cost, convenient to transport, and capable of achieving operation of the robot system by only one person. Through change of the work states of the robot system, the underwater topography is detected, the underground topographic map is drawn, different kinds of water quality data are obtained, and a good platform is brought to development of a scientific research activity.

The invention provides a shale pore structure detection method based on nuclear magnetic resonance. The method comprises the steps that a sample is processed into a cylinder; the sample is saturated with water at normal pressure for 12h, and then is taken out; CPMG pulse sequence test is carried out on the sample to acquire a spin-echo-series attenuation signal; the spin-echo-series signal is inversed to acquire a T2 spectrum distribution diagram and the details of each peak; and the T2 spectrum of acquired same sample under water saturation and centrifugation is analyzed in a coordinate system to acquire the change of the volume and quantity of pores of the sample. The shale pore structure is mainly studied in a saturated water state in the prior art of nuclear magnetic resonance, and the problems that the study angle is single and limited; only pore distribution can be studied; and fracture prediction cannot be carried out are solved. The method provided by the invention belongs to the technical field of petroleum exploration and development.

The embodiment of the invention provides a method and a device for obtaining transverse relaxation time distribution of a target storage layer. The method comprises the steps of setting corresponding experiment temperature and pressure according to temperature and pressure information of the target storage layer, and obtaining nuclear magnetic resonance intrinsic transverse relaxation time distribution of free state formation water of the target storage layer, nuclear magnetic resonance intrinsic transverse relaxation time distribution of crude oil of the target storage layer and nuclear magnetic resonance intrinsic transverse relaxation time distribution of formation water of the target storage layer; and calculating a hydrogen-containing index of the crude oil, a hydrogen-containing index of formation water, a diffusion coefficient of the crude oil and a diffusion coefficient of the formation water, then replacing intrinsic relaxation and diffusion relaxation comprehensive contribution of the crude oil by intrinsic relaxation and diffusion relaxation comprehensive contribution of the free state formation water, acquiring a rotating echo signal of the target storage layer under a complete water containing state, and performing inversion on the rotating echo signal to obtain the nuclear magnetic resonance transverse relaxation time distribution of the target storage layer under the complete water containing state.

The invention discloses a quick water rescuing system and method. The system is that a fixed-wing unmanned aerial vehicle and a multi-rotor unmanned aerial vehicle are combined to perform water rescue; the fixed-wing unmanned aerial vehicle having the advantage of long endurance time is used for polling and monitoring and observing the water state; the multi-rotor unmanned aerial vehicle having the characteristics of being flexible and stable to suspend and stop can be used for performing some special and flexible action during rescue; the two unmanned aerial vehicles are combined to achieve the purpose of quick rescuing; meanwhile, a database is utilized to determine whether people is drowned into the water, so that the error rescue can be reduced; in addition, the fixed-wing unmanned aerial vehicle can determine the people drown through the database and automatically transmit geographic information to the multi-rotor unmanned aerial vehicle as well as rescuing, and thus the rescue time is greatly reduced.

The invention relates to a throttling method for a water flow heating device and aims to enable cold water drained when the water flow heating device initially operates to be greatly reduced and improve the heating speed of hot water so as to fulfill the double aims of throttling to save water and saving gas energy. According to the method, a water temperature detector is arranged at the water outlet end of the water flow heating device and a flow regulator capable of regulating the flow is arranged at the water inlet end of the water flow heating device; when the water temperature detector detects that an outlet water temperature is in a cold water state in the initial period of use of the water flow heating device, the water flow heating device can be regulated to discharge water under small flow by the flow regulator so as to accelerate the heating operation; when the water temperature detector detects that the outlet water temperature reaches or is close to a set value, the flow regulator can be driven to supply water under normal large flow, so that the cold water drained when the water flow heating device initially operates can be greatly reduced and heating time is shortened to save gas energy.

The invention relates to a method and a system for judging a water state inside a fuel cell based on impedance, belongs to the technical field of fuel cells, and solves problems that an internal resistance of the fuel cell cannot be quickly and accurately judged in the prior art and the water state inside the fuel cell cannot be effectively identified. The method for judging the water state insidethe fuel cell based on impedance comprises the following steps: generating a current disturbance or voltage disturbance signal to the fuel cell; collecting a voltage response and a current response of the fuel cell; calculating a ratio of the voltage response to the current response to obtain the impedance; adjusting a frequency of the disturbance signal according to an argument of the impedance,so that the argument is within a set threshold range; judging that the impedance at the moment is the internal resistance of the fuel cell; and judging the water state inside the fuel cell accordingto the internal resistance of the fuel cell. The method and the system provided by the invention realize quick and accurate identification of the internal resistance of the fuel cell and effective identification of the water state inside the fuel cell.

The invention relates to an experimental device for simulating 200-meter deep water blasting under the moving water state. The technical scheme is that: the device is a hollow spherical tank (6); two observation windows (7) are symmetrically formed on the tank body of the hollow spherical tank (6) and are provided with organic glass; a working hole on the top of the hollow spherical tank (6) is provided with an installation cover (5) which is provided with three penetration holes (3) and a high pressure air pipe joint (2); the bottom of the hollow spherical tank (6) is provided with a water pipe joint (12); a lead (9) connected with explosive passes through one of the three penetration holes (3); a waterproof shielding cable connected with a pressure sensor (8) passes through another hole of the three penetration holes (3), and is connected with a data acquisition instrument (1); an electric stirrer (11) is arranged on the inner wall of the bottom of the hollow spherical tank (6); and a wire connected with the electric stirrer (11) passes through the third hole of the three penetration holes (3) and is externally connected with a power control device. The device has the characteristics of reasonable design, convenience of manufacture, and high similarity to actual environment.

A switching unit for pushbutton of kitchen water faucet cooperates with a water faucet body (1), a mandrel (2), a pushbutton mechanism (3), a bubbler (5) and a face covering (6). Two intake pipes (21,22) formed vertically in the middle of the mandrel (2) are communicated with the water inlet of the bubbler (5) and the shower water inlet of the face covering (6) respectively. The pushbutton mechanism (3) is arranged in the sidewall of water faucet body (1) and includes two buttons (32,33) capable of returning to initial state which aim at the two intake pipes (21,22). The valve core assembly (4) includes two valves (41,42), a pressure plate (43), and a return spring (44). The two valves (41,42) extend into the two intake pipes (21,22) of the mandrel (2) respectively, and the return spring (44) is arranged below the valve (41) in the bubble water intake pipe (21). The middle of the pressure plate (43) is connected pivotally with the upside of the partition between the two intake pipes (21,22), and the two ends of the pressure plate (43) are connected pivotally with the upside of the two valves (41,42) respectively. The pushbutton mechanism (3) and the valve core assembly (4) are arranged dividually and realize the switchover of shower water and bubble water using the seesaw principle. The return spring (44) makes the water faucet always keeping the bubble water state before water is turned on.

A fuel gas supply apparatus of a fuel cell system includes a pressure reducing valve, an interruption valve, and an injector in a hydrogen supply channel. A controller of the fuel cell system includes a drive cycle setting unit for setting the drive cycle of the injector based on a load of the fuel cell stack, and a water state determination unit for determining whether or not quantity of water content in the fuel cell is excessive by determining whether or not the quantity of water content is a predetermined quantity or more.

The invention relates to the technical field of grouting repairing of concrete cracks of a hydraulic building, in particular to a leaking stoppage grouting method for cracks under a high pressure flowing water state. The method comprises the following steps: processing the cracks, drilling, configuring grout, grouting and ending. The method according to the invention adopts a construction method of grouting one hole and depressurizing peripheral holes, the condition that contact cracks between the cracks and surrounding rocks cannot be entered by adopting a conventional means is changed, and grout can enter into the contact cracks to be settled and solidified smoothly, such that the leakage cracks are closed and the aim of leaking stoppage of the cracks is realized; the method according to the invention adopts a cement-base slurry material adopting taking a mixed material of cement slurry, gypsum powder and silicon powder as a main agent, when the grout enters into the contact cracks between the concrete and the surrounding rocks, due to the characteristics of slow flow speed and fake solidification of the grout, water seepage pressure cannot discharge the grout after the grout enters into the contact cracks, such that such type of slurry material can be quickly settled and solidified, and the aim of leakage stoppage of the cracks is realized.

The invention discloses a secondary reheating double-machine back-heating thermodynamic system without a deaerator for an ultra-supercritical unit. The system is characterized in that steam enters a large steam turbine super-high pressure cylinder via a boiler for working, and exhaust steam enters the boiler again for reheating; the steam enters a backpressure extraction steam turbine (BEST) for working, and high-pressure extraction steam is provided; and the steam enters a high-pressure heater to heat boiler water. The steam entering the boiler enters a large steam turbine for working after being reheated, the exhaust steam is condensed into condensed water in a condenser, and the condensed water flows through a primary condensed water pump, a shaft seal, a low-pressure mixed heater, a secondary condensed water pump, a surface type low-pressure heater, a water feeding pump and a surface type high-pressure heater sequentially and finally enters the boiler to complete circulation. The exhaust steam after the steam entering the backpressure extraction steam turbine works is introduced into the low-pressure mixed heater, heated, deoxidized and condensed into the water. The low-temperature and low-pressure condensed water is heated to the saturated water state by the low-pressure mixed heater by using the exhaust steam of a small turbine, dissolved oxygen in the condensed water and other non-condensed gases are removed, the surface type low-pressure heater replaces the deaerator, and high-position arrangement is not required.

The invention discloses a drainage system capable of lowering the drainage noise of a washing machine, which comprises a drainage pump, a drainage pump water inlet pipe and a drainage pump water outlet pipe, wherein the drainage pump water inlet pipe and the drainage pump water outlet pipe are arranged on the drainage pump; a water level detection device is arranged between the drainage pump water inlet pipe and the outer bucket of the washing machine; the water level detection device transmits a water level signal to an external controller; and the controller controls the drainage pump to be started and stopped in real time so as to ensure that the inside of the drainage pump is still kept at the full water state in the washing machine dewatering process. The drainage pump can be turned on and off according to the water level height by arranging the water level detection device on the drainage system of the washing machine, vibration noise generated by the washing machine is prevented from being overlaid with half dry adsorption noise of the drainage pump during high-speed dewatering, the noise is scattered, and the noise of the washing machine is lowered. Compared with the prior art, the drainage system has the advantages of simple structure, small noise, high drainage efficiency and low energy consumption.

The invention discloses an active potted plant water supply device, which is used for supplying water to more than one pot containing a culture medium and a plant, and mainly comprises a water storage unit, a water delivery unit communicated with the water storage unit to deliver water, and more than one water absorption unit communicated with the water delivery unit and the culture medium; and an airtight state is formed between the water absorption units and the water delivery unit. The effect of conveniently delivering the water can be achieved by means of forming a continuous water state among the culture medium, the water absorption units, the water delivery unit and the water storage unit; and due to a negative-pressure water supply mode, even if the liquid level in the water storage unit is lower than that in the water delivery unit, water can flow from the water storage unit to the water delivery unit, and the effect of effectively improving the water delivery efficiency is achieved.

The invention relates to a canal type thickener, which is a canal overall. Along an ore pulp flow path, the thickener includes a canal head, a canal body and a canal tail in order. Ore pulp enters a thickening pond through a feeding port, heavy particles in the ore pulp undergo preliminary settlement in the thickening pond. The low concentration ore pulp overflowing the canal head enters the canal body to undergo further settlement. When the low concentration ore pulp flows to the canal tail, it is already in a clear water state basically and enters a clear water pond, and is discharged through a drain hole. In the invention, the thickener is changed from the traditional ''round pond'' type to the ''canal type'', thus effectively solving the problem of large floor area of the thickener. The canal structure is in linear arrangement, can be subjected to buried installation, and does not take up the volume of a concentrating mill basically. With a long canal and a large actual settlement area, the structure of the thickener can be simpler, thereby effectively reducing the production cost.

A water purifying apparatus, comprises: a filtering unit for filtering water supplied from a wellhead into purified water; a water tank unit including a cold water tank for storing the purified water in a cold water state, and a hot water tank for storing the purified water in a hot water state; a discharging unit for selectively discharging out the purified water stored in the water tank unit; a state detecting unit for detecting an operation state of at least one of the filtering unit, the water tank unit, and the discharging unit; a controller for comparing the information detected by the state detecting unit with a preset reference, thereby judging an abnormal state of the water purifying apparatus; and a state displaying unit for displaying the abnormal state information to outside. When the water purifying apparatus has a breakdown, mal-operated components of the water purifying apparatus may be checked by being displayed on the state displaying unit, without being checked by an A/S specialist. This may reduce the time taken to repair the mal-operated components, thereby enhancing a consumer's satisfaction degree for a service.

The invention discloses a method for evaluating influence of a drilling and completion fluid on the oil and water permeability of a rock core. The method includes the steps: (1) preparing a rock core and a experimental fluid; (2) establishing irreducible water saturation and determining the oil phase permeability under an irreducible water state; (3) determining the original oil and water permeability of the rock core; and (4) determining the oil and water permeability after the drilling and completion fluid pollution; according to a value change of the oil and water relative permeability of the drilling and completion fluid before and after pollution, determining the influence of the drilling and completion fluid on the rock core. Good or bad reservoir protection effect of the drilling and completion fluid system can be evaluated; according to the method, a fluid flowing situation with the coexistence of an oil phase and a water phase in a reservoir can be fully simulated, and change laws of respective seepage abilities of the two phase fluids are obtained; compared with a traditional single-phase rock core flowing experiment, the result is more accurate, and has more guiding significance on drilling operation. The method is mainly used for evaluation of rock cores with the gas phase permeability of greater than 50 millidarcies.

The invention provides a core X-ray scanning testing experimental method. The method includes steps of S1, saturated formation water; S2, after the saturated formation water is full, starting a displacement pump to fill oil in the core, and displacing until there is no water flow completely, wherein the state at the moment is irreducible water state; S3, primary scanning; S4, properly prolonging the time interval of recording and scanning at the later period of the experiment until there is no oil discharged through displacement of oil by water, finishing the experiment; S5, for the X-ray intensity value obtained by scanning is related to the variety and quantity of the saturated liquid in the core, calculating the water-containing and oil-containing saturation value of a rock section at different moments by using the X-ray intensity value; thus the long core can be scanned, and the cost is largely reduced; besides, the method is less harmful to human body, and able to easily realize the purpose of analyzing the oil-containing and water-containing saturation degree by the core X-ray scanning.

The invention discloses a swimming pool drowning monitoring method based on binocular vision, and the method comprises the following steps: installing a plurality of binocular camera devices above a swimming pool at certain intervals, carrying out the shooting from top to bottom, and transmitting an image to a computer in real time; detecting a head image on the water surface by using a target detection algorithm according to the real-time image; calculating the three-dimensional coordinates of all point positions of the target head image, marking the highest point of the head, and judging whether the breathing part of the head is underwater or not; tracking the target by using a target tracking program algorithm; storing and analyzing the three-dimensional coordinates of the tracking target in real time, calculating the underwater duration of the human head breathing part, performing danger assessment according to the underwater single duration of the human head breathing part and the underwater time sum in unit time, and if a danger threshold value is exceeded, giving out a drowning alarm. Whether a swimmer is in a drowning state or not can be effectively detected in real time so as to prompt safety personnel to rescue.

The invention relates to an emergency efficient ecological floating bed of south still water rivers and lakes in winter and a forming method. The emergency efficient ecological floating bed comprises a floating bed single body framework and a thin film which are assembled to form a set through bolts, and nylon cord grids are arranged on the framework disposed at the bottom of the floating bed in a pulling mode. The forming method includes that a mini greenhouse is assembled in rivers and lakes which flow slowly or are in the still water state in winter and a carrier of the emergency efficient ecological floating bed of still water rivers and lakes in winter is formed. The emergency efficient ecological floating bed and the forming method have the advantages that temperature in a greenhouse area is improved so that floating bed plants can grow normally in winter and cannot wither and die due to too low temperature to lose the water body remediation capability, and the shortcoming that the common ecological floating bed is difficult to clean efficiently in winter due to floating bed plant dieing is overcome; and the purpose of playing a good cleaning role in any season is achieved, the thin film is detached in spring and summer, the landscape cannot be affected, and the thin film can be mounted in winter, so that water can be cleaned and decontaminated normally in winter. Meanwhile, the carrier is simple in structure, convenient to construct, low in manufacturing price and convenient to use.

The invention relates to a fixed wing aircraft open-water-area ditching test apparatus which is composed of a front gantry bracket (1), a middle support (2), a rear gantry bracket (3), a tail adjusting device, a throwing-in support (4), a tackle track (5), a weight throwing-in device, a damping device, a small tackle (6), a model throwing-in control device and a speed test device. The fixed wing aircraft open-water-area ditching test apparatus has the advantages that experimental requirements for fixed wing aircraft ditching under a stagnant-water state and a wave state are met, different throwing-in attitude angles of the an aircraft model are achieved, experimental projects which cannot completed in a pool are solved, and the fixed wing aircraft open-water-area ditching test apparatus is clear in design principle, and has strong operability, namely, maintainability.