69 results about "Inflow rate" patented technology

The invention provides a method for estimating the ecological water amount of a shallow lake under the pollution stress. The method comprises the following steps of: firstly, selecting a key ecological index and determining the ideal ecological water amount by adopting an ecological water level method; secondly, determining an important water quality index by means of a principal component analysis method and building a model of water quality simulation; thirdly, adopting a scenario analysis method on the base, i.e., stimulating the water environment information under different conditions through setting a certain combine scenes (including management objective, wastewater treatment level, conditions of inflow rate, conditions of outflow rate and the like); and finally, comprehensively determining the ecological water amount of the lake under the pollution stress by combining different management requirements and ecological water levels. The action of pollution stress in the current situation is fully considered, the water quality model is coupled to the evaluation for the ecological water amount of the shallow lake, the ecological water amount of the shallow lake is estimated from water quality and water amount demand, so that the ecological water amount is more effectively applied to the actual water resources allocation, and the practicability of the method for estimating the ecological water amount is enhanced.

An electrical control system for energy efficient pump stations providing for continuous operation of a single primary pump with a second pump functioning as the support pump and a third pump acting as the standby/emergency pump. All pumps are of equal horsepower and horsepower selection is determined by the system curve to select the lowest, most efficient horsepower necessary to discharge water at the highest inflow rate while not allowing the water level to drop below the submerged pump level during continuous running of the primary pump. A timer having an indicator arm rotates one full revolution every thirty days changing the pump sequence to reduce wear and tear on individual pumps. Each pump functions as the primary, secondary and backup/emergency pump for the same number of hours during the monthly cycle. Adding control circuits enables one or more pumps to be added when necessary.

An on-vehicle air-conditioner for air-conditioning has a refrigeration circuit provided with a refrigerant car exterior heat exchanger installed for exchanging heat with the car exterior air that can be used for cooling and for heating, and at least one opening and closing duct for air inflow rate regulation installed in front of and/or behind the refrigerant car exterior heat exchanger. By controlling the opening/closing of the duct according to the situation, the arrangement can solve problems of the prior art, and can efficiently and sufficiently perform cooling, heating, defrosting or the like. The arrangement is useful even when using, for example, CO₂ as a refrigerant, in vehicles such as hybrid cars using electricity and gasoline as their energy source, idle stop coping cars or the like.

In a vehicular air conditioning apparatus, a first blower unit is connected by a connection duct to a side portion of a casing constituted by respective air passages, and a second blower unit separate from the first blower unit is connected to a Lower portion of the casing. The first blower unit adjusts an inflow rate of external air by means of an adjustment damper, which is disposed to face toward an opening of a duct, and the external air flows into the casing through an intake damper.

Two finite difference algorithms on rectangular grids are provided for viscoelastic ink ejection simulations. The first algorithm is first-order accurate in time, while the second algorithm is second-order accurate in time. Each of these two algorithms seamlessly couples or incorporates several features: (1) a coupled level set-projection method for incompressible immiscible two-phase fluid flows; (2) a higher-order Godunov type algorithm for the convection terms in the momentum equations and level set convection equation; (3) the central difference for viscosity, surface tension, and upper-convected derivative terms; (4) an equivalent circuit for inflow pressure (or inflow rate). In the first algorithm, a simple first-order upwind algorithm is designed for the convection term in the viscoelastic stress equations. But in the second algorithm, a second-order Godunov type upwind scheme is employed for the convection term in the viscoelastic stress equations.

The present invention relates to a method for determining a flow rate indicator relating to the output flow rate of one or more activated pumps of a pumping station. The pumping station includes a well to be at least partially emptied by the pumps and an inlet through which inflow can be supplied into the well. The method includes the step of determining, using a computational device, an operating condition relating to the activated pumps. The pumps are temporarily deactivated and an inflow rate indicator relating to the inflow is determined using the computational device, responsive to the determination of the operating condition. The method further includes the step of determining, using the computational device, the flow rate indicator using the determined inflow rate indicator. The present invention is equally applicable to a well to be at least partially filled by the pumps.

The invention discloses a liter changing control device of a gas water heater. The liter changing control device of the gas water heater comprises a temperature detection module used for detecting the water temperature of a water inlet, a water flow rate detection module used for detecting the inflow rate, a gas proportion valve and a controller, wherein the controller calculates the actually needed heating load according to the water temperature of the water inlet, the inflow rate and the set temperature of a user, adjusts the current of the gas proportion valve according to the actually needed heating load and acquires the current using liter by sampling the current of the gas proportion valve in real time. The liter changing control device of the gas water heater can achieve the intelligent liter changing function of the gas water heater and fully meet the user requirements. The invention further discloses the gas water heater with the liter changing control device.

The invention discloses a method and a system for controlling secondary water supply chlorination in a complex loop. The method comprises the steps of adding a sodium hypochlorite solution as a disinfectant to water in a water tank for disinfection, wherein the initial default adding coefficient is k1, the disinfectant is proportionally added according to the inflow rate Q1, and the adding amountQ2 is equal to k1Q1; after t1 time, adjusting the adding coefficient k according to the residual chlorine concentration signal of the effluent fed back from the water outlet of the water tank, whereink is equal to k1-k2, the adjustment time is t2, and k2 is the adding coefficient that needs to be adjusted; and when the residual chlorine concentration of the effluent fed back from the water outletdoes not reach a set value, refilling the disinfectant to the water tank, wherein the refilling amount V is equal to vk2, and v is the volume of water in the tank. The method and the system achieve chlorination disinfection on the water in the secondary water supply tank, and the equipment is intensive, efficient, simple and convenient; the whole equipment is fully automatic, the adding amount ofthe reagent is continuously analyzed and adjusted through the residual chlorine concentration of the effluent, thereby avoiding inaccurate adding amount caused by the concentration change of the reagent, and prolonging the changing cycle.

The invention discloses a method and a device for removing the fragments from a reflective surface of an EUV collector for an EUV light source. The reflective surface includes a first material; the fragment includes a second material and/or a compound of the second material. The system and the method include a controlled sputtering ion source which comprises a gas including sputtering ion source atoms; and an exciting mechanism for exciting the atoms of the sputtering ion material to an ionized state. The ionized state is selected to a sputtering probability which is distributed around a selected energy peak, has a high sputtering probability to the second material and an extremely low probability to the first material. The exciting machenism includes an RF or microwave induction mechanism. The gas is retained partially according to the pressure of the selected energy peak. The exciting mechanism generates an ion inflow quantity. An atom sputtering density of the second material formed on the surface of a reflector is equal to or over the inflow rate of second material plasma fragment atoms. A sputtering rate is selected with respect to the expected life of the assigned reflective surface. The reflective surface is covered. The light collector includes an elliptical mirror and a fragment screen including a radially extending groove. The first material is molybdenum, the second material is lithium and the ion material is helium. The system has a heater for evaporating the second material from the reflective surface. The exciting mechanism is linked to the reflective surface among the ignition period and the reflective surface has a barrier layer.

The invention discloses an anaerobic-oxic (AO) high-efficiency nitrogen and phosphorus removal system. The AO high-efficiency nitrogen and phosphorus removal system is provided with a secondary sedimentation tank which is communicated with a sewage outflow end of a biological tank, wherein a first-level anoxic zone, an anaerobic zone, a first-level oxic zone, a second-level anoxic zone, a second-level oxic zone, a third-level anoxic zone, a third-level oxic zone, a fourth-level anoxic zone and a fourth-level oxic zone are arranged in the biological tank from sewage inflow to sewage outflow inturn; the secondary sedimentation tank comprises a sewage outflow port and a sludge reflux pipe; the sludge reflux pipe is communicated with the first-level anoxic zone in the biological tank, and isused for injecting reflux sludge into the first-level anoxic zone; sewage is injected from the upper sides of the first-level anoxic zone, the second-level anoxic zone, the third-level anoxic zone and the fourth-level anoxic zone from a sewage inflow port through pipelines respectively; stirrers which ensure that sediments are not generated in mixed liquid are arranged in the anoxic zones and theanaerobic zone from the first level to the fourth level; and the amount of the sewage which is injected into the first-level anoxic zone, the second-level anoxic zone, the third-level anoxic zone andthe fourth-level anoxic zone is 0 to 40 percent of inflow rate. By the AO high-efficiency nitrogen and phosphorus removal system, the concentration of the sludge in the subsequent levels is improved,the volume of the biological tank is reduced, and engineering investment is saved.

The invention discloses a water treatment method for removing total nitrogen through two-stage AO of environmental microorganisms and step inflowing. An active sludge system is constructed by adding environmental microorganisms; meanwhile, by adjusting the operating parameters and external factors such as inflow rate distribution, volumes of an anoxic tank and an aerobic tank, the sludge age and the reflux ratio in each stage of the process according to the inflow water quality, a two-stage A/O process of environmental microorganisms and step inflowing is formed; in a practice process of sewage treatment, through consistent optimization and summarization, targeted environmental microorganisms are screened out, nitrifying bacteria can become dominant bacteria in a biological system, thus the ability of degrading ammonia nitrogen is greatly enhanced, and a better and more thorough nitrogen removal effect of a relatively conventional A/O system is ensured. Meanwhile, to meet the increasingly strict requirement on total nitrogen index in all industries, a biological nitrogen removal technology of environmental microorganism and A/O is improved and upgraded into a two-stage A/O biological nitrogen removal technology of environmental microorganisms and step inflowing, and the objectives of increasing the removal rate of total nitrogen and reducing the operation cost are achieved.

The invention relates to a method for prolonging the cleaning period of an immersed ultra filtration membrane, which comprises the coupling of stock solution pretreatment, cross flow, air vibration, low-power consumption ultrasonic cleaning and other methods. The method can be realized through one of the four methods or randomly combining the methods. The stock solution pretreatment method comprises pre-filtering, destabilization agent adding or the combined use of the pre-filtering and the destabilization agent adding; the cross flow method has the ratio of backflow rate to ultra filtration membrane inflow rate is (5:100)-(30:100); the air vibration method has the aeration intensity of 10-100m<3>m<minus 2>h<minus 1>, the aeration time of 1-5 minutes and the aeration interval time of 20-180 minutes; and the low-power consumption ultrasonic cleaning method has the ultrasonic power of 10-50kHz, the ultrasonic sound intensity of 10-80Wm<minus 2>, the ultrasonic duration of 1-5 minutes and the ultrasonic interval time of 20-180 minutes.

The invention relates to traffic signal control method and aims at providing a method for controlling demands of traffics entering city regions by using signal lamps. The method comprises screening out first-level demand control road crosses and second-level control road crosses according to a road network topological structure; determining respective appropriate signal cycles according to traffic strength of each road cross at area boundaries; judging crowding situations of each road section through a detector, and sequentially triggering requests for first-level demand control and second-level control road if state indexes achieve a preset threshold value; and determining allowing inflow rate of each road cross according to control requirements, and further determining demand control phase split of each road cross. The method needs fewer data, only needs flow data and occupancy data, is not strong in road network topological structure dependency, is applicable to road networks of any topological structures, enables inflow volume from the area boundaries to the inside of the area to be equal to the traffics borne by the inside of the area, remits traffic jam of the area and improves traffic circulation efficiency.

The invention discloses a drainage control method for a sewage pumping station. The method specifically comprises the following steps: 1, increasing a variable frequency pump; 2, adding a target valueof "constant liquid level" in a stepped liquid level threshold; 3, obtaining liquid level information of a collecting basin through a liquid indicator by a controller, and implementing a control strategy of "liquid level high opening and low closing" when the liquid level change caused by the change of the sewage inflow rate exceeds the established liquid level threshold of a switching pump; and4, acquiring the liquid level information of the collecting basin through the liquid indicator by the controller, and implementing a control strategy of "constant liquid level" when the liquid level change caused by the change of the sewage inflow rate dose not exceed the established liquid level threshold of the switching pump. On the basis of retaining the safety of the traditional control method, the drainage control method for a sewage pumping station provided by the invention complies with small fluctuation of the inflow through stepless variable flow of the variable frequency pump, and complies with large fluctuation of the inflow through the switch pump, which improves the drainage fluency of the sewage pumping station and meets the demand for water supply and drainage under the current situation of "large flow, weak regulation, and fluctuation".

A charged particle beam instrument is offered which can easily perform an in situ observation in a gaseous atmosphere. The charged particle beam instrument (100) is used to perform an observation of a specimen (S) placed in a gaseous atmosphere and has a specimen chamber (2), a gas supply portion (6) for supplying a gas into the specimen chamber (2), a venting portion (7) for venting the specimen chamber (2), a gaseous environment adjuster (4), and a gas controller (812) for controlling the gaseous environment adjuster (4). This adjuster (4) has a gas inflow rate adjusting valve (40) for adjusting the flow rate of the gas supplied into the specimen chamber (2) and a first vacuum gauge (CG1) for measuring the pressure of the gas supplied into the specimen chamber (2). The gas controller (812) sets a target value of pressure for the gas supplied into the specimen chamber (2) based on a predetermined relational expression indicating a relationship between the reading of the first vacuum gauge (CG1) and the pressure inside the specimen chamber (2) and on a corrective coefficient for correcting the reading of the first vacuum gauge (CG1) according to the species of the gas supplied into the specimen chamber (2) and controls the gas inflow rate adjusting valve (40) such that the reading of the first vacuum gauge (CG1) reaches the target value of pressure.

The embodiment of the invention discloses an air-source heat pump air heater and a refrigerant flow control method of an air-source heat pump air heater system. The air-source heat pump air heater comprises a compressor, a multi-way valve, a flash evaporator, an outer heat exchanger, a throttling element and at least two inner heat exchangers. The refrigerant flow control method comprises the steps that whether or not the liquid level of the flash evaporator is within a preset liquid level range is determined, if not, the refrigerant inflow rate of the flash evaporator is adjusted to make theliquid level of the flash evaporator tend to fall within the preset liquid level range, and then whether or not the liquid level of the flash evaporator is within the preset liquid level range is determined again; and whether or not the superheat degree of return air of the air-source heat pump air heater system is within a preset superheat degree range is determined, if not, the refrigerant outflow rate of the flash evaporator is adjusted to make the superheat degree of the flash evaporator tend to fall within the preset superheat degree range, and whether or not the superheat degree of return air of the air-source heat pump air heater system is within the preset superheat degree range is determined again. In this way, the air-source heat pump air heater system can work more efficiently while operating stably.

The invention provides a testing apparatus and method for actual high-pressure adsorption kinetics of an adsorbent. The method is a volume method based on an improved static bed test system and comprises four steps, i.e., volume calibration, calibration of a hot zone and a cold zone, leak detection, and testing. According to the method provided by the invention, a pressure gauge in a traditional static bed test system is replaced by a high-sensitivity pressure sensor, and the actual high-pressure adsorption kinetic curve of the adsorbent is obtained through inverse computation based on a curve of changes of pressure in an adsorption pipe along with time, so influence of air inflow rates on testing results in traditional testing methods for kinetics of adsorbents is avoided; the concept of the hot zone and the cold zone and a measuring method are provided so as to reduce calculation errors caused by the dead volume of pipelines and the temperature nonuniformity of the adsorption pipe; and the mass of a sample added into the adsorption pipe is controlled so as to allow pressure drop in the process of measuring to be macroscopically small and microscopically great, so accuracy of calculation results is guaranteed, and pressure is approximately considered to be almost unchanged in the process of adsorption.

The invention relates to a control method of a washing machine. The control method includes an executable first water inlet scheme, the first water inlet scheme includes that inflow water is subjectedto water quality optimization treatment prior to being fed into a washing drum, and when water is fed into the washing machine and the first water inlet scheme is executed, the inflow rate before water quality optimization treatment is controlled according to inflow water quality before and/or after water quality optimization treatment. The invention further relates to the washing machine, whichcomprises a water inlet passage communicated with an external water supply pipeline and the washing drum of the washing machine. An optimization device for water quality optimization is arranged on the water inlet passage which is provided with a flow rate control device, the flow rate control device is positioned at an upstream position of the optimization device and used for controlling the flowrate, and a first water quality detection device which is positioned at an upstream position of the optimization device and used for water quality detection and/or a second water quality detection device which is positioned at a downstream position of the optimization device and used for water quality detection are arranged on the water inlet passage. The first water quality detection device andthe second water quality detection device are connected with the flow rate control device.

The invention relates to an energy-saving building heating system, and belongs to the technical field of heating systems. The heating system comprises a concentrator, a heat meter, a valve controller, a constant-temperature valve and a wireless indoor temperature controller, wherein the heat meter is externally connected with a water inlet pipe and is connected with the concentrator and is used for transmitting data information of inflow temperature, inflow rate and heat to the concentrator; the wireless indoor temperature controller is used for setting the temperature and detecting the indoor temperature in real time by a user; the valve controller is used for receiving the data information of the wireless indoor temperature controller, transmitting the data information to the concentrator, and controlling the constant-temperature valve to open and close according to the instruction of the concentrator; and the data information of the wireless indoor temperature controller contains indoor temperature, temperature set by the user and set mode state. The heating system provided by the invention is simple in structure; the indoor temperature can be effectively controlled; over-high indoor temperature is avoided; energy sources are saved; and the heat using conditions of users can be simultaneously controlled and monitored by heating companies, so that manpower and material resources are saved.

The invention discloses a reversal design method determining secondary river maximum main river inflow rate; the method comprises the following steps: 1, building a water quality optimization model to carry out water quality simulation, determining decision variables and constraint conditions, and changing flow setting of each secondary river so as to form different conditions; 2, using water quality model simulation results under different conditions as nerve network training samples, building a nerve network and training the nerve network so as to realize non-linear function fitting, thus allowing the trained network to predict the water quality conditions in a primary river control section; 3, using a heredity algorithm to randomly form certain number of individuals as the initial population, using the well trained and improved nerve network as constrained conditions so as to determine and screen the individuals, selecting individuals satisfying water quality conditions and with high adaption level, using intersection and variation to obtain a novel population, thus obtaining the optimal design scheme for each secondary river flow regulation and control. The reversal design method can provide more improved design for the river water quality simulation technology.

The invention provides a sluice dam multi-target discharge estimation method and system, and the method comprises the steps: S10, building a sluice dam control basin hydrological model and determiningmodel parameters according to meteorological station length sequence observation data in the range of an upstream basin of a sluice dam and an actual measurement runoff sequence of a sluice dam entrystation; S20, determining the characteristic river length of the water supply range of the gate dam, and determining sub-basins involved in the water supply range by combining the confluence sequenceof the sub-basins; S30, determining various water supply targets of the gate dam, and determining the water storage and drainage amount corresponding to each water supply target of the gate dam; andS40, determining the total discharge capacity and the water storage capacity of the sluice dam under the specific scheduling rule. According to the method, the inflow rate and the water supply range of the gate dam are recognized, the dynamic water storage and drainage amount of the gate dam under the different targets of flood prevention, power generation, agriculture, industry, life and the likeis given, and technical support is provided for gate dam control drainage basin water circulation process simulation.