51results about How to "Delayed" patented technology

The invention relates to a COVID-19 epidemic situation population situation prediction method based on LSTM, and belongs to the technical field of deep learning. The method comprises the following steps: S1, acquiring epidemic situation data of COVID-19; S2, predicting the population situation of the national COVID-19 epidemic situation; S3, predicting COVID-19 epidemic situations of provinces, autonomous areas and direct administration cities; and S4, predicting the population situation of COVID-19 epidemic situations in cities. Deep learning achieves excellent effects in many fields at present, LSTM has good performance in time series prediction, time characteristics and rules of data can be well mined, and the effect is better than that of a traditional non-parametric model.

The embodiment of the invention discloses a user trajectory similarity judgment method, a corresponding device, computer equipment and a computer storage medium, and relates to the technical field ofnetwork security. The user trajectory similarity judgment method comprises the following steps: determining paths with a time sequence of two users; determining the longest common sub-path of the twousers; and determining the track similarity of the two users according to the time overlapping degree of each corresponding adjacent space in the longest common sub-paths of the two users, and/or thenumber of spatial positions contained in the longest common sub-paths, and/or the number of the longest common sub-paths. According to the invention, paths of two users are converted into a time sequence of spatial positions based on the idea of pattern recognition; a time interval covering method is used for replacing a time threshold value, the user track similarity can be accurately obtained, by means of the method, if a single suspicious person starts from the perspective of the single suspicious person, a suspicious gang similar to the single suspicious person can be rapidly found, and conversion from a single user portrait to a group user portrait is achieved.

The invention relates to a cabinet door air-cooling type constant temperature cabinet system and a control method, and solves the problems that the hot gas radiating effect of the back portion of a cabinet is not good, the refrigeration mode is single and the service life is influenced due to continuous working of refrigeration equipment. The system comprises the cabinet. The back portion of the cabinet is provided with a cabinet door; a refrigeration unit is arranged in the lower portion of the cabinet; an external circulation unit is arranged in the upper portion of the cabinet; the back cabinet door is internally provided with an air-cooling chamber; the air-cooling chamber is internally provided with warm-air pipes; the inner side surface of the back cabinet door is provided with a plurality of inner circulation suction ports connected with the warm-air pipes; and the warm-air pipes are communicated with the refrigeration unit. The system controls the refrigeration unit, the external circulation unit and a water-cooling heat radiation device to work intermittently according to the temperature. The advantages of the system are that back cabinet door provides dual functions of heat dissipating and air returning, and the hot air is cooled before entering the refrigerating unit for refrigerating; and the refrigeration unit does not need to work all the time and is allowed to work intermittently, thereby reducing working time of the refrigeration unit and realizing the purpose of energy saving and consumption reducing.

The invention relates to a preparation method of a partially hydrolyzed polyacrylamide gel blocking agent. According to the invention, a chrome propionate cross-linking agent is prepared from materials of chromate, a reducing agent and propionic acid according to a molar ratio of 1:(2.5-5.5):(8-20), wherein a reaction temperature is 10-120 DEG C and a reaction time is 5-10h. An auxiliary agent isprepared from components of, by mass: 1-8% of C2-C5 alcohol, 0.5-1.5% of a sulfur-containing oxygen purification agent, 2-8% of polycarboxylic acid, 30-40% of sodium hydroxide, and 50-60% of distilled water, wherein a reaction temperature is 50-100 DEG C and a reaction time is 2-5h. The partially hydrolyzed polyacrylamide gel blocking agent is prepared from components of, by mass: 1-3% of partially hydrolyzed polyacrylamide, 0.2-0.6% of the chrome propionate cross-linking agent, 0.2-0.4% of the auxiliary agent, and balance of water. The auxiliary agent provides functions of retarding, stabilizing and pH value regulating.

The invention discloses an electric power and electrical equipment supporting device. The electric power and electrical equipment supporting device comprises a vertical balancing module, a transverse balancing module, a control module and supporting parts. The transverse balancing module is arranged on the side portion of electric power and electrical equipment and used for balancing the electric power and electrical equipment; and meanwhile transverse vibration can be converted into vertical vibration, and therefore vibration can be eliminated more effectively. The problem that in a traditional technology, due to the fact that only vibration reduction in the vertical direction is paid attention to, the vibration reduction effect is poor is solved. According to the electric power and electrical equipment supporting device, a buffer solution is utilized as an elastic recovery medium, damping can be effectively improved, vibration can be weakened or even interdicted, proper elasticity and supporting force can further be kept, the buffer solution is uniform in texture, and therefore balance can be better kept through a spring. The buffer solution is prepared from raw materials which are low in price, the cost is low, viscidity is good, damping is large, the elasticity recovery capacity is good, and vibration can be effectively weakened.

The invention discloses a sectioned shape-control and temperature-control three-dimensional thermal stretch bending forming device which is mainly composed of a base, a sectioned insulating box, a forming unit, a hydraulic oil cylinder bracket, a hydraulic oil cylinder, a transformer and a temperature control cabinet, wherein the base is L-shaped and a plurality of T-shaped grooves are formed in the base in the longitudinal direction; the forming unit is mounted in T-shaped grooves through T-shaped slide blocks at the bottom of the bracket; the sectioned insulating box is mounted on a slide block guide rail of the forming unit to form a follow-up structure so as to move along with the forming unit; openings in two sides of the sectioned insulating box are closed by a high-temperature-resistant flexible protecting curtain and an asbestosed wire gauze, so that heat diffusion is reduced; the hydraulic oil cylinder is fixed to the hydraulic oil cylinder bracket and the base, a piston rod of the hydraulic oil cylinder is fixedly connected to a back plate of the forming unit, and displacement of the piston rod is controlled to adjust the position of the forming unit and a positioning function to the forming unit is obtained; a section bar is heated by self resistance, the transformer is connected to the section bar and the temperature control cabinet, and the temperature control cabinet controls heating of a resistance wire and acquisition of thermocouple data. By designing the sectioned shape-control and temperature-control device which has an independent insulating property andmoves along with the section bar in a forming process, the heating efficiency and the temperature control precision are improved, and flexible, efficient and low-cost three-dimensional thermal stretch bending precision forming of hardly processed metal section bars at constant temperature is realized.

The invention relates to a desulfurization system operation optimization method based on an improved PSOFCM algorithm. The method comprises the steps: carrying out the clustering of sample data through the improved PSOFCM algorithm, and building a desulfurization system operation target condition library; an ARIMA model is adopted to predict desulfurization boundary conditions; and guiding the adjustment of desulfurization operation parameters. Compared with the prior art, parameters such as pH, slurry density and the like closely related to desulfurization operation cost are considered simultaneously, the problem of dispatching of a dispatching circulating pump combining a variable frequency pump and a common fixed frequency pump of an existing power plant is solved simultaneously, multi-parameter synchronous adjustment can be performed, and the adjustment mode is more flexible. The traditional FCM algorithm is improved, aiming at the defects that the traditional FCM is greatly influenced by an initial clustering center, is easy to fall into local optimum and is uncertain in clustering number, the PSO algorithm is used for optimizing the traditional FCM algorithm, the local optimum can be avoided. Meanwhile, a clustering effectiveness evaluation function is introduced, and the clustering number with the best clustering effect can be determined.

The invention belongs to the technical field of wastewater treatment and particularly relates to a positive pressure wastewater-lifting mechanism for basements, comprising a compressor and a pressureexchange device. A wastewater collector is fitly arranged below the pressure exchange device; a wastewater collection tank is arranged below the wastewater collector and is connected with an externalwastewater collection pipe via a wastewater collection connector; a floater is fitly arranged on the wastewater collection tank and is provided with an ejector rod; a blow-down connector is fitted below the wastewater collection tank and is fitly connected with a discharge pipe; the other end of the discharge pipe is connected with a gravity pipe of a drainage system. The positive pressure wastewater-lifting mechanism for basements is driven by negative pressure, has delayed turn-on and turn-off, and has controllable time, high response speed, thorough wastewater discharge and zero odor; the positive pressure wastewater-lifting mechanism for basements is rarely damaged in moist environments and therefore, has long service life.

The invention provides a self-piloting damping vacuum diaphragm valve, and belongs to the technical field of vacuum diaphragm valves. The self-piloting damping vacuum diaphragm valve comprises a diaphragm chamber, an upper diaphragm chamber and an intermediate diaphragm chamber, wherein the top part of an upper housing is connected to atmosphere or a vacuum system; a vacuum channel, a damping channel and at least one atmosphere channel are arranged at the bottom part of an intermediate housing; a damping block is arranged at an outlet in the upper end of the damping channel in a covering, resisting and connecting manner; an intermediate diaphragm sheet is compressed to the inner wall of the bottom part of the intermediate housing through the damping block, and the intermediate diaphragm sheet fits an end port of the atmosphere chamber in a covering, resisting and connecting fitting manner; a damping hole is formed in the damping block and communicates with the damping channel; a connecting rod is arranged in the middle of the intermediate housing; the top part of the connecting rod is fixedly connected to the upper diaphragm sheet; the connecting rod is in penetrating fitting witha through hole in the middle part of the damping block; a valve sheet is fixedly arranged at the bottom part of the connecting rod and fits an outlet of the vacuum channel in a covering, resisting andconnecting manner; the other end of the vacuum channel is connected to a check valve, and the other end of the check valve is connected to the vacuum end. The self-piloting damping vacuum diaphragm valve is delayed to open and close, so that sewage can be completely and cleanly pumped; and the device is stable and reliable to use.

The invention discloses a slow-closing type airtight water drainage system and belongs to the technical field of water drainage systems. The slow-closing type airtight water drainage system comprisesa compressor, a pressure exchange device, a drainage pipe and a sewage storage container. The compressor, the drainage pipe and the pressure exchange device are in fit connection. One end of the drainage pipe is in fit connection with the sewage storage container, and the other end of the drainage pipe is connected with a gravity pipeline of the sewage drainage system. According to the slow-closing type airtight water drainage system, delay of opening and closing is achieved, so that thorough sewage drainage is guaranteed; by using the small pipe for sewage drainage, the occupied space is small, the appearance is attractive, the flux is large, and the airtightness is good; and the water drainage distance is 10-50 m, so that the slow-closing type airtight water drainage system is suitable for long distance water drainage such as bathrooms and water drainage pipes and also suitable for dispersion type centralized drainage places such as cruises and subways.

The invention discloses a damping device for small and medium-sized electromechanical equipment. The damping device comprises a box body, at least three X axis damping modules, a Y axis damping module and a supporting portion. The box body comprises a side wall defined by side plates and a bottom sealed by a bottom plate, the box body is of a semi-opened structure with an opening in the upper portion, and a cavity where the electromechanical equipment is installed is formed inside the box body. The X axis damping modules are arranged between the side wall and the electromechanical equipment and symmetrically distributed on different portions of the electromechanical equipment for supporting the electromechanical equipment. The Y axis damping module is arranged between the bottom plate and the electromechanical equipment to elastically support the electromechanical equipment. The supporting portion is arranged at the bottom of the box body to support the box body. The side wall is of a two-layer structure composed of an inner side plate and an outer side plate. A cavity for containing buffer liquid or buffer media is formed between the two side plates, the thickness of the cavity is 2-4 times that of each side plate, the cavity is divided by multiple cavity units, the cavity units are sealed and do not communicate with one another, and each cavity unit is filled with buffer liquid.

A preferred embodiment of the invention relates to a cyclone separator for a vacuum toilet system, with a casing; an input-side swirl generator, whose input openings impart a swirl to the inflowing fluid; a separating wall arranged in the casing, which encloses the fluid stream in the cyclone separator ring-like and whose interior cross section tapers downstream; and a collection tank in the casing for receiving and accumulating constituents separated out of the fluid. In addition, the invention relates to a wastewater tank and vacuum toilet system having such a cyclone separator.

The invention relates to a manual control remote button control system for a toilet, belonging to the technical field of sewage system. The manual control remote button control system comprises a micro-control device, a discharge pipe, a plate-type lift valve, a negative pressure station, a toilet and a remote control switch, a discharge pipe, a plate-type lift valve, a remote control switch and the micro-control device, wherein one end of the discharge pipe is matched with the negative pressure station, the other end of the discharge pipe is matched with the toilet sewage outlet, and the toilet flush outlet is connected with an inlet pipe through the plate-type lift valve. A manually control remote button control system of that toilet bowl adopts a negative pressure drive, which can ensure that sewage is discharged thoroughly, uses small pipes to discharge sewage, occupies small space, has beautiful appearance, has large flux, is convenient to switch, has good tightness, and has a drainage distance of 10-50m, suitable for long-distance drainage of toilet.

A liquid level automatic control distribute liquid collecting device belongs to the technical field of sewage treatment and includes a microcontroller, the lower part of the microcontroller is matchedwith a sewage collector, the lower part of the sewage collector is a sewage collection tank, the sewage collection tank is connected with an external sewage tank through a sewage collection joint, asewage passage, a float ball is arranged on the sewage collection tank, a jacking rod is arranged on the float ball, a sewage discharge joint is arranged on the lower part of the sewage collection tank, the sewage discharge joint is matched with one end of a discharge pipe, and the other end of the discharge pipe is connected with a negative pressure station. The liquid level automatic control distribute liquid collecting device adopts negative pressure driving, and is delayed in opening and closing, controllable in time, fast in response speed, thoroughly discharged with sewage, not easy to be damaged in a damp environment, long in service life, and suitable for centralized treatment of rural sewage.

The invention relates to a pressing pressure exchange device, and belongs to the technical field of pressure exchange devices. The pressure exchange device is composed of a first shell, a second shell, a third shell, a fourth shell and a fifth shell which are mutually connected, and an outer cover is cooperatively arranged above the shell to form a buffer cavity; a first elastic piece, a second elastic piece, a first cavity, a second cavity, a third cavity, a high-pressure cavity and a fourth cavity are arranged between the shells. Starting and shutdown of the pressing pressure exchange devicehave delay performance, the time is controllable, the response speed is high, and sewage discharge is thorough; the device is not easy to damage in a humid environment, long in service life, suitablefor long-distance drainage of toilet and kitchen drainage pipes and suitable for cruises and other places needing distributed centralized drainage.

The invention relates to a basement sewage integrated lifting device, and belongs to the technical field of sewage treatment. The device is composed by connecting a first casing, a second casing, a third casing, a fourth casing, a fifth casing and a sewage collector, the lower portion of the sewage collector is a sewage collection tank, and the sewage collection tank is connected to a sewage collection pipe outside through a sewage collection joint. The above-mentioned basement sewage integrated lifting device adopts negative pressure driving, and has the delay in opening and closing, the timeis controllable, the response speed is fast, the sewage discharge is thorough, and there is no odor; the device is not easily damaged in a humid environment, and the service life is long.