41results about How to "Avoid start and stop" patented technology

The invention discloses a device for enabling fine catalyst to be efficiently separated and automatically circulated during catalytic oxidation treatment of sewage, and belongs to the field of water pollution control. The device comprises a strong oxidant adding device, a lifting pump, a water injector, an ozone generator, an ultraviolet lamp controller, a catalytic oxidation reaction tank, a catalyst separation pump, a flowmeter, a catalyst water inlet valve, a centrifugal hydraulic interception pulse separator, a water outlet valve, a catalyst return valve, a deactivated catalyst discharge valve, a pulse backwash pump, a pulse backwash valve and a clean water tank. The device greatly reduces differential pressure rise caused by accumulation of the fine catalyst on the surface of a filtercartridge of the centrifugal hydraulic interception pulse separator through the coupling effect of inlet water tangent scouring, centrifugal force and pulse backwash, thereby guaranteeing the long-term, stable and efficient separation operation of the centrifugal hydraulic interception pulse separator. The device can not only realize the efficient separation of the fine catalyst, but also realizethe automatic circulation of the fine catalyst after separation.

The invention relates to a control method of magnetic suspension cold water host machines of an office building central air conditioning system. The control method comprises the following steps: (S11) a performance curve of a magnetic suspension cold water host machine set and a performance curve of single freezing pump are obtained; (S12) the performance curve of the magnetic suspension cold water host machine set and the performance curve of the single freezing pump are fitted by applying a least square method to obtain a mathematical model of the magnetic suspension cold water host machine set and a mathematical model of the single freezing pump; (S13) based on the energy consumption added by change of the obtained single freezing pump to two freezing pumps, the mathematical model of the magnetic suspension cold water host machine set and the mathematical model of the single freezing pump are combined to obtain a corresponding relation curve between total energy consumption and part load of the central air conditioning system; (S14) the integration is performed according to the corresponding relation curve between total energy consumption and part load of the central air conditioning system to obtain a preset part load range of the central air conditioning system; and (S15) the opening number of the magnetic suspension cold water host machines of the central air conditioning system is controlled according to the preset part load range of the central air conditioning system.

The invention belongs to the generating equipment scope and in particular relates to a mixed heat power generating system with a paraboloid groove type solar heat collector to assist a coal burning boiler. A solar heat collector field is connected with a feed pump and a second or a third high-pressure heater; a condenser, an extraction pump, a low-pressure heater, a deaerator, the feed pump, the high-pressure heater, the coal burning boiler and a steam turbine are connected in series in turn; and the steam turbine drives a dynamo and discharges steam to the condenser. Condensed water flows outfrom the condenser and is heated up and pressurized up by a the low-pressure heater, deoxidized by the deaerator, fed with water by a leading-out part of the feed pump and enters the solar heat collector field for heat absorption; after reaching a stream drawing parameter of a certain stage high-pressure heater, the condensed water returns and joins the drawing gas of the corresponding stage heater; the other part of feeding water enters the coal burning boiler through the high-pressure heater and becomes steam with high temperature and high pressure; and the steam enters the stream turbine,applies work and flows into the condenser to complete a thermodynamic cycle. The mixed heat power generating system with the paraboloid groove type solar heat collector to assist the coal burning boiler reduces coal consumption of a coal burning unit, improves thermal efficiency of the solar heat power generation and reduces the investment on the simple paraboloid groove type solar heat power generation.

The invention relates to a decision-making method for optimizing thermal power unit combination under complementation of wind power and an energy storage system. The decision-making method comprises a process of optimizing an upper layer problem and a lower layer problem, wherein the upper layer problem builds upper layer problem constraint conditions by taking minimization of the operating cost of a thermal power unit within a set period as an objective function; the lower layer problem builds lower layer problem constraint conditions by taking maximization of profit acquired by the energy storage system in performing space-time translation and backup supply on electric energy in a power grid as an objective function; and a solution is acquired by using a mode of alternative iteration of the upper layer problem and the lower layer problem. The energy storage system in the model not only can participate in an expected power balance constraint, but also can play a role of backup through complementation with the wind power, and has an ability of directly eliminating the uncertainty; frequent startup and shutdown of the thermal power unit is avoided on the basis of improving the uncertainty acceptance ability; and a regulating effect of the frequency of an electric power system is considered in decision making, so that the decision is enabled to be free from conservation and more conform to the reality.

A temporary obstacle processing method for laser slam navigation, suitable for factory environments, characterized in that the method includes the following steps: S1, importing a positioned static map into the AGV, and using this map as the background map of the warning map ; S2, the occupied area and expansion area of ​​fixed obstacles are also displayed on the warning map; S3, two-level warning areas are set, including the first-level warning area and the second-level warning area; S4, the laser scanner detects obstacles, and based on the detection The result determines whether it is a fixed obstacle or a temporary obstacle, and displays the temporary obstacle detected by the laser scanner on the warning map; S5, detects that the AGV is in the human-computer interaction area or the AGV exclusive area, and when it is in the human-computer interaction area, the temporary obstacle The object is not processed, and when it is in the exclusive area of ​​the AGV, step S6 is executed; S6, based on the judgment result of step S4, the AGV selectively performs deceleration, stops or runs at the original speed.

An air source multi-connected air conditioner heat pump system and its operation method belong to the field of heating and air conditioning. The system includes four parts: outdoor unit, heat pump host, defrosting module and indoor unit. The outdoor unit includes at least one parallel cooling tower module, at least two parallel air cooled heat exchanger modules, a first liquid pump and a second liquid pump. The defrosting module includes a defrosting heat exchanger and a second throttle valve, and is connected in parallel with the indoor unit. The air-source multi-connected air-conditioning heat pump system of the present invention discharges heat to the outside through the cooling tower during cooling in summer; during heating in winter, takes heat from the outside through the air-cooled heat exchanger, and uses the defrosting module to produce hot water Defrost the air-cooled heat exchanger. The system and its operation method have the characteristics of efficient cooling in summer, reliable heating and defrosting in winter, and solve the problem that conventional air source multi-connected air-conditioning heat pump systems cannot balance cooling efficiency and heating reliability.