13results about How to "Low operation and maintenance costs" patented technology

This utility model relates to an anti-clogging reactor for the resource recovery and preparation of ammonium sulfate from high-concentration ammonia-containing waste gas. The reactor body includes an absorption zone and a crystallization zone from top to bottom, with the crystallization zone and the absorption zone connected. The absorption zone is located above the liquid surface, and the crystallization zone is located below the liquid surface. The top of the absorption zone has a tail gas outlet, and the bottom of the crystallization zone has a crystal slurry outlet. An external Venturi reaction zone is located below the absorption zone of the reactor body, connected to the reactor body. The Venturi reaction zone has an inlet for the ammonia-containing waste gas and an inlet for the circulating absorbent liquid. The external Venturi reaction zone forms a primary absorption, reducing the intensity of the absorption reaction within the reactor and significantly improving the anti-clogging capability.

The utility model relates to the technical field of high-temperature heat storage and exchange systems, and discloses a molten salt spherical tank heat storage and exchange gas pressure conveying device which comprises a low-temperature molten salt spherical tank and a high-temperature molten salt spherical tank, and gas supply pipeline systems and electric heating boilers are arranged at the tops of the low-temperature molten salt spherical tank and the high-temperature molten salt spherical tank. The electric boiler is arranged on the right side of the low-temperature molten salt ball valve and used for improving the heat storage efficiency at the off-peak electricity price. Continuous or intermittent fused salt conveying is achieved through gas pressure balance and a pressure regulating valve set, low-temperature fused salt liquid obtained after fused salt in the high-temperature fused salt spherical tank is subjected to heat exchange through a gas pressure conveying fused salt heat exchanger is conveyed to the low-temperature fused salt spherical tank to be stored, and the fused salt liquid in the low-temperature fused salt spherical tank is conveyed to the fused salt heater through gas pressure to be heated and then conveyed to the high-temperature fused salt spherical tank. The effects of avoiding the risk of sealing leakage caused by the high temperature of the molten salt pump, being simple in structure, stable in operation, suitable for large and medium-sized molten salt heat storage and exchange systems, capable of accurately controlling the flow, stable in top pressure and rapid in response are achieved.

The invention provides a wind turbine heat pump unit control method, after a wind turbine is started, the working condition of a unit is adjusted according to a plurality of parameter indexes, and the method comprises the following steps that the current outlet water temperature and the target water temperature are judged to obtain a first parameter index, and a first adjusting instruction is determined according to the first parameter index; judging the sizes of the target loading position and the current loading position so as to obtain a second parameter index, and determining a second adjustment instruction according to the second parameter index; determining a load adjusting instruction output to the unit according to the first adjusting instruction and the second adjusting instruction; after the unit is adjusted according to the load adjusting instruction, the water valve opening degree is adjusted according to the first parameter index. The control system adjusts the automatic adjustable load position according to the water outlet temperature target value, the current load of the compressor and the target load of the wind turbine, the wind energy fluctuation and the heat load requirement of a user are balanced, and energy storage dependence is reduced.

The invention discloses a sewage treatment system abnormity early warning method, system and equipment and a storage medium, and relates to the technical field of sewage treatment. The variety, concentration and time-space distribution of VOCs and malodorous gas in each process unit are monitored in real time through a multi-modal sensing technology, dynamic characteristic parameters are extracted, and a dynamic association model of coupling of an LSTM neural network and a random forest is constructed in combination with inflow water quality and process operation data. The model can accurately identify fault types such as water inlet toxicity impact and aeration abnormity, output graded early warning signals and position an abnormal source. According to the invention, traditional monitoring hysteresis is broken through, early warning is carried out 4-6 hours in advance, intrusive sampling is not needed, the operation and maintenance cost is reduced, and the impact resistance and operation stability of a sewage treatment system are improved.

This utility model discloses an alumina leaching device, characterized in that: the raw ore slurry, after passing through a first heat exchanger, sequentially enters a second, third, fourth, and fifth heat exchanger, and then enters a heat-insulating retention tank. The heat-insulating retention tank is connected to a flash evaporator. The leached slurry from the flash evaporator is connected to a second heat exchanger, and then enters a dilution tank. The dilution tank is connected to a post-leaching tank via a first pump. This utility model, through optimized thermal energy design, reduces redundant flash evaporation and auxiliary processes in traditional processes, lowers equipment investment costs and operational complexity, and provides a device for optimizing the thermal energy utilization of the leaching system, while simultaneously achieving the goals of simplifying the leaching process and saving investment. Combining the leaching heat balance and the water distillation benefits from flash cooling, it ensures that the ore slurry achieves the best leaching effect and optimal economic benefits in the leaching system.

A wind turbine gearbox anomaly detection method considering the similarity of multi-unit operating states, based on the piecewise linear time series similarity evaluation method, evaluates a single state variable; considering the similarity of multiple state variables, the wind turbine operating state spatiotemporal similarity quantification method evaluates the similarity of each wind turbine and the operating state of the unit to be detected; a state estimation LSTM model is constructed, different LSTM models are trained; the accuracy and adaptability of different LSTM model performances are verified; select several LSTM models that perform well in performance verification, construct a combined state estimation model CPEM through weighted combination; estimate the target variable of the unit to be detected, calculate the residual error between the estimated value and the true value, and based on the residual effective value comparison and residual information entropy comparison, identify the anomaly. This method detects the operating state of the gearbox based on the historical operating data of the wind turbine, without the need for maintenance personnel to conduct on-site detection, reducing the operating and maintenance costs of the wind turbine.

The application discloses a beam-linear integrated acceleration structure, which comprises multiple pairs of electrode rods and multiple ring bodies arranged in sequence along the beam motion direction, the axial direction of the ring body is consistent with the beam motion direction, and the through holes of the ring body are arranged corresponding to the beam motion path; two adjacent ring bodies form an acceleration gap; the length direction of the electrode rod is consistent with the beam motion direction; every two pairs of electrode rods are limited in an acceleration gap and are fixedly connected with two adjacent ring bodies respectively; and the two pairs of electrode rods in each acceleration gap are distributed orthogonally; along the beam motion direction, the acceleration stages of the beam-linear integrated acceleration structure are as follows: in a first stage, the electrode rods in each acceleration gap form a transverse focusing quadrupole field; in a second stage, the surface of the electrode rod is modulated with a wave surface; in a third stage, along the beam motion direction, the multiple electrode rods are gradually shortened, and the multiple ring bodies are gradually lengthened; and in a fourth stage, the electrode rods disappear, the multiple ring bodies form multiple complete drift tubes and are gradually lengthened. The application can make the linear acceleration device more compact and efficient.

The present disclosure provides a high-efficiency clarifying device and a sewage treatment system. The high-efficiency clarifying device comprises a water inlet device, a high-efficiency clarifying kettle and a gas stripping reflux device. The water inlet device comprises an inverted trapezoidal water inlet; the high-efficiency clarifying kettle comprises a sludge-water separation zone, a sludge concentration zone and a water discharge device, the sludge-water separation zone is located above the sludge concentration zone, the sludge concentration zone is in the shape of a conical hopper, the inverted trapezoidal water inlet is arranged on the outer wall of the sludge concentration zone, and the water discharge device is in communication with the sludge-water separation zone; the gas stripping reflux device comprises a reflux pipeline, a gas stripping pipeline and a control valve, the sludge inlet end of the reflux pipeline is in communication with the bottom of the sludge concentration zone, the gas outlet end of the gas stripping pipeline is in communication with the reflux pipeline, and the control valve is arranged at the gas inlet end of the gas stripping pipeline. By arranging the high-efficiency clarifying device provided by the present disclosure in the aerobic zone, the secondary sedimentation tank is not required, thereby effectively reducing the land occupation of the sewage treatment system, and the high-efficiency clarifying device provided by the present disclosure has low cost and low operation and maintenance cost.

The application discloses a mobile bed biofilm sewage treatment device; the upper water level of the facultative zone is communicated with the upper water level of the multifunctional zone through a facultative zone water outlet pipe; the bottom of the multifunctional zone is provided with a suction device, the suction device is communicated with the facultative zone reflux pipe and the lower water level of the facultative zone through the facultative zone water inlet pipe and the facultative zone lower water level; the upper water level of the aerobic zone is communicated with the lower water level of the sedimentation zone through a flow channel, and the upper end of the flow channel is closed with an aerobic zone filler interception plate; the upper water level of the aerobic zone is communicated with the upper water level of the multifunctional zone through a nitrification liquid reflux pipe. By adopting the scheme, the power of the water pump and the power of the air-water mixed bubbles can be utilized to form a circulating flow from the bottom to the top, so that the sewage is fully contacted with the microorganisms and oxygen on the filler, and the pollutants such as BOD, COD and ammonia nitrogen in the sewage are removed; and the circulating flow formed by the jet aerator is used for hydraulic stripping, so that the filler sinks to the bottom, the unevenness of the filler is avoided, and the suspension of the filler is ensured.

The utility model discloses a reverse osmosis membrane and EDI concentrated water recovery device which comprises a concentrated water storage tank, a high-pressure pump, an anion and cation exchange device, a high-purity water storage tank and a control unit. The system not only improves the utilization rate of water resources and the water yield of the system, but also remarkably reduces the discharge amount of concentrated water and the operation cost, ensures the quality of high-purity water, has remarkable economic benefits and environmental benefits, and is suitable for industrial high-purity water preparation scenes.

The application discloses a tunnel surface subsidence based step-by-step construction device and construction method. The application belongs to the technical field of tunnel construction. The device comprises a plurality of top support molds, a plurality of insertion point type insertion units are arranged between two adjacent top support molds, each top support mold and each insertion point type insertion unit are installed on an assembly beam, a driving type transmission mechanism for driving the top support mold to move along the length direction of the assembly beam is installed on the assembly beam, and a plurality of vertical hydraulic cylinders are installed on the lower end of the assembly beam along the length direction of the assembly beam. The method is to apply the above device to step-by-step reinforcement of the tunnel. The core design of active support, multi-point reinforcement and step-by-step advancement is adopted in the application, so that the whole process of surface subsidence in tunnel construction is realized, and fine control is achieved. The application has stability, high efficiency, safety and economy, and is especially suitable for tunnel construction under complex geological conditions such as karst, and can effectively guarantee the engineering quality and the safety of the surrounding environment.

This utility model provides a fully gravity-fed drainage structure for a switchyard, belonging to the field of water conservancy and hydropower technology. It includes a switchyard site, and a relay protection building and a GIS building respectively installed on top of the site. Both the relay protection building and the GIS building have basements for cable laying at their bases. The two basements are connected by a cable corridor. A site drainage ditch is installed around the outer perimeter of the switchyard site, and an indoor drainage ditch is installed around the inner perimeter of the basements. A corridor drainage ditch is installed inside the cable corridor, and a collection well is also installed in the basement of the GIS building. This utility model, through its gravity-fed and centralized drainage design, solves the problem of flooding caused by water pumps used for drainage when indoor water seepage occurs, especially in cases of pump equipment failure or power outage.

This invention discloses an integrated composite purification system for aquaculture wastewater, comprising an upper physical filtration system, a lower biochemical fine filtration system, and a sludge treatment system located outside the overall supporting structure. The biochemical fine filtration system is situated below the physical filtration system and includes, from bottom to top, a reaction sedimentation tank, a filter media layer, an overflow zone, a backwashing system, and diagonally arranged inlet feeding and mixing tanks and an outlet discharge zone. The backwashing system includes a sludge suction pipe located at the bottom of the inclined cone of the reaction sedimentation tank, a sewage pump and sewage pipe on the ground of the physical filtration system, and the drainage pipes of the physical filtration system and the automatic dosing system both enter the reaction sedimentation tank through the inlet feeding and mixing tank.