284 results about "Drainage flow" patented technology

The invention discloses an intelligent discharge port dynamic regulation and control system and method based on multi-source time sequence fusion, and relates to the technical field of intelligent water affairs, and the system comprises a data collection module which is used for obtaining the multi-source data of a target area in real time; the space-time fusion module is used for mapping the meteorological radar data to the topological space of the drainage pipe network through a space-time alignment encoder, dynamically fusing the meteorological radar data, the surface runoff sensor data and the historical drainage data by adopting a multi-head attention mechanism, and generating a space-time fusion tensor; the prediction model module is used for constructing a TCN-LSTM hybrid model, taking the space-time fusion tensor as input and taking future drainage flow as output; and the dynamic regulation and control module is used for optimizing the gate opening degree and the pump station power control sequence in a rolling manner based on a model predictive control algorithm, and performing dual-target optimization by combining real-time electricity price data and overflow risks. According to the system, the prediction precision of the drainage flow can be improved, and double-target balance of the overflow risk and the energy consumption cost can be achieved.

The invention relates to an anti-deposition method and system for a sequencing batch storage and drainage sewage pipe network. The method comprises the following steps: determining the highest allowable storage water level and the lowest allowable discharge water level of each sewage pump station according to an unfavorable overflow point and a leakage point in an upstream service range of each sewage pump station; according to the historical change rule of the flow of each sewage pumping station, determining a corresponding upstream discharge water quantity increase abrupt change point; according to the drainage path of each sewage pump station and the upstream drainage amount increase abrupt change point, determining the sequence of the water storage-drainage mode of each sewage pump station; according to the drainage path and the operation mode of each sewage pump station, adjusting the operation mode and the pumping and drainage flow of other sewage pump stations; and when each sewage pump station is in the water storage-drainage mode, monitoring the liquid level change in real time, and controlling the operation state of the corresponding lift pump according to the liquid level change of each sewage pump station, the corresponding highest allowable water storage level and the corresponding lowest allowable water discharge level. According to the invention, the pollutant collection and transfer efficiency can be effectively improved.

The invention relates to the field of detection, in particular to a steam pipe network drainage monitoring and diagnosis system based on the Internet, and the system is provided with a data collection module which is provided with a plurality of collection units. The data acquisition module is used for respectively acquiring pipe network operation pressure in the steam pipe network, water quality hardness of inlet water, pipe network operation temperature, a water flow image of a drainage port and a scale image of the drainage port, and the data diagnosis module is connected with the data acquisition module and is used for predicting the drainage probability of the steam pipe network according to the pipe network operation pressure and the pipe network operation temperature. The data diagnosis module is connected with the data acquisition module and the data diagnosis module to judge whether the steam pipe network needs drainage or not and judge whether a drainage port of the steam pipe network needing drainage is blocked or not, and the early warning adjustment module is connected with the data acquisition module and the data diagnosis module and used for responding to blockage of the drainage port and adjusting pressure in the steam pipe network to flush the drainage port. Or the opening size of the drainage valve is adjusted to adapt to the drainage flow velocity, and the drainage monitoring and diagnosis accuracy is improved.

The invention provides a lake pre-discharge opportunity determination method and system based on short-term rainfall forecast, and relates to the technical field of urban flood control and drainage. The method comprises the following steps: acquiring short-term rainfall forecast data; calculating hourly production and confluence flow based on the short-term rainfall forecast data, and calculating the total amount of water entering the lake according to the hourly flow before a set moment; according to the designed drainage flow of the pump station, a water quantity balance equation and the total water quantity entering the lake, calculating the water quantity out of the lake, and determining the total water quantity out of the lake; the water balance equation, the total water entering the lake and the total water exiting the lake are used for combined calculation, and the starting moment of the pump station is obtained; the starting time of the pump station is used for determining the lake pre-discharge opportunity. The method can dynamically optimize the pumping and drainage mode of the pump station from time, determines the lake pre-drainage time, and improves the heavy rainfall coping capacity of a city.

The invention discloses a cascade reservoir flood control water level combined application scheduling method and scheduling system, and relates to the technical field of cascade reservoir scheduling, and the method comprises the following steps: dividing into a plurality of sub-regions according to an administrative region, determining a sub-reservoir corresponding to each sub-region, and collecting the rainfall and historical flood discharge data; analyzing the water storage capacity of each sub-region at the moment corresponding to the historical data to form a training data set; constructing a flood season flood discharge prediction model, and obtaining the target flood discharge flowing into the sub-reservoir by using the prediction model; analyzing the water level change in the flood season according to the target flood discharge amount, and judging whether scheduling is needed; and if scheduling is needed, determining a drainage flow combination of each sub-reservoir, setting a constraint condition, and performing optimization through a multi-target genetic algorithm to obtain an optimal drainage flow scheme meeting constraints. According to the scheme, the scientificity, the accuracy and the intelligent level of combined dispatching of the cascade reservoirs are remarkably improved.

The invention discloses a water gushing tunnel section TBM construction method which comprises the following steps that an advanced geological forecast system is arranged in front of a TBM cutterhead and is transmitted to a central processing unit of a TBM main control room; according to rock mass fracture development degree data and real-time water pressure data obtained by an advanced geological forecast system, a water guide groove is formed in the top of a TBM shield; in the TBM propelling process, an advanced grouting system is started; after grouting operation is completed, the grouting effect is verified through a permeability coefficient detector arranged behind the cutterhead; and the drainage flow of the water guide groove is continuously monitored in the tunneling process. According to the method, accurate sensing of geological information, efficient discharge of gushing water, effective reinforcement of surrounding rock and automation of the construction process are realized through advanced geological forecast, targeted drainage system design, accurate grouting control and intelligent emergency response which are combined by multiple means, the risk of water gushing is reduced, and the construction safety and efficiency are guaranteed.

The farmland drainage system comprises a hard drainage channel and an ecological purification section, the ecological purification section comprises a frame protection unit and an internal filling unit, a bottom liner layer and a partition layer are arranged in the hard drainage channel to form a filling lattice, and the filling lattice is filled with a first filling matrix and a second filling matrix. The first filling matrix can filter and purify the farmland drainage, intercept pollutants in the farmland drainage, slow down the drainage flow rate and prolong the hydraulic retention time; the second filling matrix is used for planting aquatic plants, inhabitation and reproduction spaces are provided for small animals such as frogs and other microorganisms and planktons, the ecological benefits of an original hard drainage channel are improved, and meanwhile the planted aquatic plants can absorb pollutants in water through root systems and cooperate with the microorganisms to purify water. The invention further provides a farmland hard drainage channel transformation method.

The invention relates to a flood prevention drainage method and device based on a digital intelligent scheduling algorithm, and relates to the technical field of flood prevention drainage. A relay; the number of the relays corresponds to that of the water pumps; the touch screen all-in-one machine is used for man-machine interaction and displaying the running state of the drainage device The liquid level sensor is used for detecting the water level height in real time; a control mainboard; the control mainboard is electrically connected with the touch screen all-in-one machine, the relay, the liquid level sensor, the variable frequency driver and the current sensor; the control mainboard obtains a weather condition sent by the external equipment; the control mainboard predicts the water level change trend through a water level prediction model based on the water level height, the weather condition and the geographic features of the drainage area and generates a drainage task. And the control main board determines the working sequence of all the water pumps performing the drainage task according to the drainage flow, the energy consumption and the current operation duration of each water pump, and controls the relays of the water pumps in the working state to be in the conduction state.

The invention discloses a simulation forecasting method suitable for urban rainstorm waterlogging in areas lacking pipe network data, which is characterized in that for areas without pipe network data, rainwater inspection well information is acquired by calling a Baidu map, pipeline drainage flow is generalized based on a rainwater well equivalent drainage method, and for areas with pipe network data, pipeline drainage flow is generalized by calling a Baidu map. Constructing a drainage pipe network model based on a one-dimensional Saint-View equation by adopting a finite difference method; then, constructing a hydrodynamic model, coupling a rainwater well equivalent drainage method and a drainage pipe network model with an FVCOM model, simulating an earth surface ponding evolution process, and obtaining a rainstorm waterlogging data set; and training and establishing a water depth prediction model based on the obtained data, then predicting the water depth of each prediction point after a specific time in an actual rainfall event, and giving an alarm in advance when a waterlogging early warning range is reached. According to the method, the submerged water depth of a waterlogging-prone point can be predicted in advance, waterlogging forecasting of a city lacking pipe network data can be achieved, and rainstorm disaster loss is greatly reduced.

The invention provides a multi-target segmentation optimization method for grey green blue measures by coupling a wild dog optimization algorithm with an SWMM, and relates to the technical field of urban inland inundation treatment. According to the method, an optimization model taking the minimization of the total investment cost and the maximization of the runoff reduction rate as targets is constructed by analyzing the accumulated water distribution and determining the measure type, scale and cost. Decision variables comprise pump station drainage flow and the like, the flow is analyzed by adopting a period-by-period water regulation and storage method, and a variable relation is established through multiple regression. In the first round, a Pareto solution set is generated by using a wild dog algorithm, and optimization is carried out by combining an SWMM model, so that a Pareto leading solution set suitable for a data-lacking region is obtained. The urban toughness can be improved.

The invention provides a sewage treatment plant drainage scheduling method and system based on a fluid dynamic model, and relates to the technical field of sewage treatment and drainage scheduling. According to water quality and water quantity coupling historical data of a water inlet, water inlet load levels are divided, and a matching model of the water inlet load levels and drainage flow and frequency is built; collecting interception quantity and pipeline flow data at a water inlet grid, and performing association processing to obtain an interception influence coefficient reflecting the influence of grid interception on pipe network drainage; calculating an allowable drainage range of the pipe network by using a fluid dynamic model, calculating an optimal drainage parameter in the allowable range by combining a current load matching model and an interception influence coefficient, and identifying a hydraulic unbalance road section at the same time; and finally, the optimal parameter serves as a target, the valve opening degree of the unbalanced road section is adjusted, actual drainage of the pipe network can approach the target parameter, overall hydraulic balance is maintained, and drainage scheduling accuracy and pipe network stability are improved.

The utility model discloses a self-drainage flow switcher which comprises valves, an upper cover and a shell, the switcher is specially provided with a drainage station, the drainage station is provided with two valves, a drainage branch pipe where one valve is located is used for drainage, and an air inlet branch pipe where the other valve is located is used for air inlet. And the phenomenon of icing in the device can be effectively avoided.

The utility model belongs to the technical field of pipeline drainage / drainage, and particularly discloses a sand washing drainage device which comprises a main drainage pipe and a throttling drainage pipe. The main water drainage pipe is used for being communicated with a low-concave node of a water conveying and distributing pipeline to form a main water drainage channel, and a water drainage opening of the main water drainage pipe is provided with a tail end switching device used for opening and closing the water drainage opening; the throttling water drainage pipe is connected to the periphery of the downstream of the main water drainage pipe in a bypass mode to form a branch water drainage channel, the pipe diameter of the throttling water drainage pipe is smaller than that of the main water drainage pipe, and the throttling water drainage pipe is connected with an adjusting valve used for adjusting the water drainage flow of the branch water drainage channel in series. And a filter is connected in series in the main water drain pipe or the throttling water drain pipe and is positioned at the upstream of the regulating valve. According to the sand washing drainage device, pipeline drainage / drainage can be safely and stably carried out under the condition of high pressure difference.

The surface mine ecological restoration drainage structure comprises a drainage part and reinforcing parts at the two ends of the drainage part, the drainage part comprises a drainage channel and a gate body, the gate body is clamped in the drainage channel, a portal frame is arranged above the drainage channel, and a hoisting assembly on the portal frame is connected with the gate body; the reinforcing part comprises a plurality of reinforcing assemblies which are symmetrically distributed and linearly arranged, each reinforcing assembly comprises a reinforcing base and a supporting plate, the supporting plates are rotationally connected with the reinforcing bases, the reinforcing bases are provided with a plurality of ground nails, and reinforcing nets are arranged between the reinforcing assemblies and the adjacent reinforcing assemblies. The two ends of the reinforcing net are connected with the supporting plates in the two reinforcing assemblies correspondingly. According to the drainage structure, collapse of the surface mine drainage area is effectively prevented through the arrangement of the reinforcing part, and stable operation of a drainage system is guaranteed; and the gate body is matched with the hoisting assembly to control the drainage flow, so that the drainage efficiency and safety in the ecological restoration process of the surface mine are improved.

To disclose a rainfall-induced landslide monitoring and early warning method and system based on the dynamic characteristics of groundwater.SOLUTION: According to one embodiment, rainfall-induced landslide monitoring and early warning is realized based on monitoring the surface drainage flow rate, and monitoring evaluation of slope safety and stability is transferred to monitoring the flow rate at a surface drainage outlet, thereby disclosing a completely new groundwater-monitoring-based rainfall-induced landslide monitoring and early warning technology. This technology can be used for slide surfaces of any shape, and takes into account real-time data on pore water pressure at the bottom of a slide surface, resulting in short calculation times, high calculation efficiency, and simplified monitoring means, as well as higher monitoring accuracy than that of concurrent rainfall-monitoring-based technologies.SELECTED DRAWING: Figure 1

The thermal management assembly comprises a bottom cold plate, a side cold plate, a connecting piece, a collecting piece and a detecting piece, a drainage flow channel is formed in the bottom cold plate, and the side cold plate comprises a current collecting part located at the end of the side cold plate. The connecting piece communicates with the flow collecting part and is used for enabling the heat exchange medium to flow into and / or flow out of the flow collecting part. The collecting piece and the side cooling plate are both arranged above the bottom cooling plate, the collecting piece comprises a collecting cavity, and the position of the collecting cavity corresponds to the position of the flow collecting part and the position of the connecting piece. The detection piece comprises a detection cavity and a detection part, the drainage runner is communicated with the collection cavity and the detection cavity, and the detection part extends into the detection cavity and is used for detecting whether liquid exists in the detection cavity or not. According to the technical scheme, the liquid leakage problem of the heat management assembly can be effectively found in time, the drainage flow channel is arranged in the bottom cooling plate, the structure is simplified, the bottom cooling plate can conduct heat exchange with the outside through heat of leaked liquid, and the heat utilization rate of a heat exchange medium is increased.

The invention relates to the field of intelligent scheduling of drainage systems, in particular to an intelligent scheduling method and system for a tunnel drainage system based on multi-source data fusion, and the method comprises the steps: obtaining a final rainfall model after space-time calibration through obtaining data and carrying out space-time alignment; acquiring a seepage field and a surface runoff field of the tunnel to obtain a nonlinear mapping relation between rainfall intensity and tunnel catchment flow; obtaining tunnel predicted catchment flow through a nonlinear mapping relation, collecting water-collecting well liquid level data of a tunnel drainage system and operation output data of a drainage pump group, and generating drainage pump group control reference parameters; and when it is detected that the difference between the predicted catchment flow and the actually measured drainage flow of the adjacent tunnel is smaller than a preset difference threshold value, a frequency adjustment instruction and a start-stop control sequence are output in combination with the drainage pump set control reference parameters. The space-time precision of rainfall prediction is improved, the interference influence of catchment flow among tunnels is fully considered, and the accurate scheduling of a tunnel drainage system is improved.

The application belongs to the technical field of drain valves, and discloses a time-delay valve core, a time-delay drain valve applying the same and a sanitary ware, wherein the time-delay valve core comprises: a body provided with a water inlet area, a water control flow channel and a water passing area, the water control flow channel being communicated between the water inlet area and the water passing area; a first adjusting member rotatably installed on the body, the water control flow channel being configured to change the water discharge flow to the water passing area with the rotation of the first adjusting member; and according to the water discharge requirement of a product, the water discharge flow of the water control flow channel is adjusted by using the first adjusting member, so that the adjustment of multiple water efficiency is realized, and the time-delay valve core is suitable for different water products. The whole structure is simple, the adjustment is convenient, and the applicability is wide.

The utility model provides a test drainage device for a water diversion system of an impact type unit. The test drainage device comprises a water intake pipe and a drainage pipe, the electromagnetic hydraulic valve is arranged at the other end of the water taking pipe and is connected with the water taking pipe; the pressure reducing valve is arranged in the machine pit and is connected with one end of the water taking pipe at an interval; the gate valve is arranged opposite to the pressure reducing valve and is communicated with the pressure reducing valve through a pipeline; the rear bent pipe is connected to one end of the gate valve; the other end of the water taking pipe extends to the ground, and an obtuse included angle is formed between the water taking pipe and the axis of the pressure reducing valve. The test drainage device for the water diversion system of the impact type unit is simple in structure, low in cost, flexible, good in safety and capable of well controlling the average drainage flow, and the brake water spraying pipeline of the impact type unit is utilized.

A liquid leakage detection and drainage system comprises a water retaining strip (1) which is arranged on a floor in a fire extinguishing system concentration area and forms a closed liquid accumulation area with the floor; the two leakage detection assemblies (2) comprise the upper leakage detection assembly (2B) and the lower leakage detection assembly (2A) and are arranged on the inner wall of the water retaining strip (1) in the vertical direction and parallel to a floor, the lower leakage detection assembly (2A) is arranged at the position where the water retaining strip (1) makes contact with the floor, and the upper leakage detection assembly (2B) is arranged at the position, away from the floor by the height (H), of the water retaining strip (1); a drainage rod (5); and the liquid discharge pipe (3) is arranged between the liquid accumulation area and the water discharge rod (5). The system is capable of collecting leaked liquid by using a water retaining strip, performing leakage detection by using a leakage detection assembly, and providing a combined alarm scheme according to allowable direct drainage flow during flight.

The utility model relates to the technical field of municipal construction, and discloses a construction site rainfall rapid drainage structure which comprises a water storage frame body and further comprises a first filter screen arranged at the top of the water storage frame body. A brush roller is controlled to rotate to clean a second filter screen, silt in rainwater is effectively prevented from blocking meshes, the drainage flow speed is guaranteed, rapid drainage is achieved, the filtered and adsorbed rainwater is drained and collected through a drainage assembly, the water accumulation situation is reduced, and the practicability is high. Rainwater subjected to secondary filtration in the collecting tank, the first drainage tank and the second drainage tank is conveniently conveyed into the drainage box through the conveying pipe and the connecting pipe, fine silt, suspended solids and the like in the rainwater are adsorbed through the activated carbon box, the water quality is effectively improved, and recycling of the rainwater is promoted.

The invention discloses a surfing device based on a riverway barrage, which is used for providing an ideal movement scene for surfing movement and belongs to the field of riverway landscapes and water sports. The device comprises a riverway water pool and a dam body discharge flow channel matched with the riverway water pool, a flow guide plate is arranged at the bottom end of the dam body discharge flow channel, and a deep water pool is arranged in the downstream direction of the flow guide plate; tail water plates are arranged on the side, away from the guide plate, of the deep pool at intervals. According to the device, ideal surfing conditions can be created in the downstream area of the dam body, and the problem that static display devices such as artificial waterfalls and landscape fountains are lack of interactivity and motility is effectively solved.

The invention relates to the field of overflow well pipeline drainage, and discloses an intelligent overflow well pipeline drainage system which comprises a pipe wall vibration monitoring module used for collecting a drainage main pipeline vibration signal, extracting vibration characteristics and generating an abnormal positioning report, and a sensing node response regulation and control module used for generating a pressure regulation and control strategy instruction. The shaft pressure gradient analysis module is used for obtaining time sequence data of a shaft axial pressure probe based on a pressure regulation and control strategy instruction and generating a pressure gradient map, the drainage flow planning module is used for obtaining shaft real-time water level data, calculating the water level change rate and generating a drainage instruction, and the valve scheduling module is used for scheduling the drainage flow according to the drainage instruction. And generating a valve control instruction set. According to the method, three-dimensional anomaly positioning is achieved through association of the pipeline vibration time-frequency characteristics and the sealing ring dielectric parameters, anomaly recognition is enhanced in combination with the pipe network topology and the pressure gradient matrix, the dynamic flow threshold value is generated through self-adaptive regulation and control of the sealing state, and the early warning precision and the regulation and control efficiency are improved.

The invention relates to the technical field of rainwater and sewage diversion, and discloses a municipal rainwater and sewage diversion device for sponge cities, which comprises a tank body, a water inlet is formed in the rear part of the tank body, a sewage pipe is fixedly connected to the inner wall of the tank body, a rainwater pipe is fixedly connected to the inner wall of the tank body, and a floating ball mechanism is arranged on the inner wall of the tank body. In the using process of the device, rainwater and sewage can be automatically separated and discharged, manual judgment or electrical signal control is not needed, sewage intercepting and discharging are completely achieved according to the actual rainfall, the total drainage capacity of a system can be instantly improved, the rainwater and sewage can be automatically filtered, and the rainwater and sewage can be automatically discharged in a separated mode without manual judgment or electrical signal control. The drainage bottleneck under the rain and flood peak value is broken through, the liquid level in the device is rapidly lowered, impurities on the surface of the filter plate can be scraped into the first chute box and slide into the second chute box, the drainage flow is recovered, and the rapid flood discharge capacity at the rain and flood peak value is ensured.

The utility model discloses a high-pressure fixed-discharge regulating valve which comprises a valve, a water outlet and a concave frame. A conduit A is arranged on one side of the valve, and a conduit B is arranged on the other side of the valve; a water outlet is formed in the guide pipe B, and a sealing steel ball is arranged at the top of the water outlet; the concave frame is arranged at the top of the guide pipe B. A pull rod is arranged at the top of the sealing steel ball. The movable plate is pushed by the air cylinder to slide in the cavity, when the inserting plate moves to a proper position, the inserting plate is inserted into the inserting groove of the pull rod, the pull rod is fixed to a specific position, positioning of the opening position of the sealing steel ball is achieved, and it can be guaranteed that the drainage flow is stabilized within a set range; through the combined design of the positioning plate, the scale marks and the positioning block, visual opening position information of the sealing steel ball is provided for an operator, the operator does not need to use additional complex equipment, adjustment is convenient and timely, and the working efficiency is improved; the sealing effect is effectively enhanced through the sealing ring on the surface of the sealing steel ball.

This invention discloses a safety assessment and practical design method for transformer emergency oil drainage, belonging to the field of power safety. Based on the dynamic analysis of emergency oil drainage in oil-immersed transformers, and considering the flow balance conditions of the transformer tank and emergency oil pit, this invention proposes a novel graphical method. This method utilizes the linear change in leakage flow rate of the transformer tank and the drainage flow rate of the emergency oil pit over time after a transformer explosion. It analyzes the flow balance time when the leakage and drainage flows are equal, and directly calculates the minimum required volume of the emergency oil pit using the area method of the flow diagram. Based on the ratio of the actual volume to the necessary volume of the emergency oil pit, the safety factor for emergency oil drainage is determined, thereby evaluating the drainage capacity of the emergency oil drainage system and the improvement design of the emergency oil pit. This invention avoids the tedious process of solving complex differential equations simultaneously in traditional methods, significantly reducing computational complexity and facilitating rapid mastery and application by engineering designers.

The present application provides an on-line metering control system for borehole gas drainage, which relates to the technical field of coal mine information systems. The system includes: a data acquisition unit for acquiring the control timing data of the drainage pump and the pipeline gas sensing timing data; a flow prediction unit for predicting the gas flow prediction timing data corresponding to the future second time period through a gas drainage flow prediction model; the backbone network of the gas drainage flow prediction model adopts an LSTM model; a drainage control unit for determining the predicted timing data of the control parameters of the drainage pump corresponding to the second time period through a gas drainage pressure control model, and the gas drainage pressure control model adopts a Transformer model based on an attention mechanism. Thus, through a fully automated on-line control system, relying on machine learning models to monitor gas data in real time and make dynamic adjustments, the frequency of human intervention and the dependence on operators are reduced.

The present invention discloses a mechanical linkage open-and-close water drain, comprising a drain body, a sealing cover, and a mechanical linkage. The drain body has a water passage. The sealing cover is installed on the drain body within the water passage via the mechanical linkage. A receiving cavity is provided within the water passage. When the sealing cover blocks the water passage, the mechanical linkage is received within the receiving cavity. The sealing cover swings out of the water passage via the mechanical linkage to open the water passage. Using the technical solution of the present invention, the water passage can be fully opened during use, improving drainage flow and efficiency and facilitating smooth drainage.

The present invention discloses a washing machine drain pump and a washing machine for improving flow rate and saving electric energy, which includes a pump body, a motor and a sealing ring. The sealing ring is placed at the joint of the pump body and the motor. The water in the washing machine drum sequentially passes through the water inlet pipe, the water inlet cavity, the water passing holes and the water suction holes. Through the constraint and induction of the drainage direction by the conical annular upper water baffle and the lower water baffle, the water flows along the outer blades and radiates towards the inner hole and the edge of the inner hole of the drain pipe along the first conical surface of the upper water baffle and the second conical surface of the lower water baffle, reducing the flow loss of drainage in other directions. The present invention improves the drainage flow rate of the drain pipe by precisely constraining and inducing the drainage direction, and the drainage flow radiates towards the inner hole and the edge of the inner hole of the drain pipe within the included angle range formed by the first conical surface of the upper water baffle and the second conical surface of the lower water baffle of the outer blades. Under the conditions of the same head and drainage flow rate requirements, the present invention can also save electric energy in the power of the drain pump.

The application provides a safe and effective water seal bottle for closed drainage of thoracic cavity, a liquid storage cavity is connected with the right top end of a U-shaped negative pressure display, the middle part of a right tube is connected with a water seal cavity, the top end of a left tube is communicated with atmosphere, and a thoracic cavity effusion and gas drainage tube is arranged on the top of the liquid storage cavity; the top of the water seal cavity is sequentially connected with a drainage flow control valve, a negative pressure adjusting valve and a negative pressure generator; a first floating ball float rod in the liquid storage cavity penetrates through a first connecting tube upward and is fixed to an outer shell; a second floating ball is arranged on the upper end of the left tube, and a third floating ball is arranged on the top end of the right tube. The first connecting tube is provided with a one-way valve; the negative pressure display and the water seal cavity are filled with liquid, the liquid surface is higher than the right side of the negative pressure display when there is no negative pressure, the liquid is connected with the water seal cavity, and a slanting tube is arranged below the liquid surface of the water seal cavity; the application is injected with standard water when leaving the factory, liquid does not need to be injected into the water seal cavity and the negative pressure observation cavity when being used, and the application is provided with an over-negative pressure automatic protection function, a slanting tube observer and a flow adjusting valve, is convenient to move and carry, and prevents the liquid in the liquid storage cavity from flowing back.