349 results about "Pipe water" patented technology

The invention provides a pipeline water hammer monitoring method, device and equipment, and relates to the technical field of oil and gas pipeline monitoring. The method is applied to an SCADA system and comprises the steps that a detected trigger signal of fluid control equipment in an oil conveying pipeline is responded, a pressure signal and a flow signal in the oil conveying pipeline are obtained, and microsecond-level timestamps, corresponding to the trigger signal, of the pressure signal and the flow signal serve as time references; determining physical sparse characteristics according to the pressure signal and the flow signal; and determining whether an event corresponding to the trigger signal is a water hammer based on the physical sparse feature. According to the invention, the accuracy of water hammer positioning is improved.

The invention relates to the technical field of pipeline robots, and discloses a probing robot for automatically recognizing defects of a drainage pipe culvert under the water operation condition. The movement mechanisms cling to the inner wall of the pipeline and are used for detecting the movement of the robot; the rotating mechanism is rotationally mounted on the peripheral side of the robot body; the pressure mechanisms are fixedly mounted on the outer wall of the rotating mechanism, attached to the inner wall of the pipeline and used for collecting pressure value related electric signals; the detection system is mounted in the robot body; the detection system comprises a signal processor module, a wireless transmission equipment module and an infrared camera module; the pressure mechanism, the rotating mechanism and the detection system are matched to realize accurate positioning of defect points on the inner wall of the pipeline. Through combination of mechanical contact type detection and kinematic model positioning, high-precision spatial positioning and identification of the inner wall of the pipeline are realized in a high-turbidity and full-pipe water-carrying environment, and data support is provided for subsequent pipeline maintenance and repair.

The utility model relates to the technical field of rubber sealing ring production, and discloses a shaping device for rubber sealing ring production, which comprises a processing table, and a water storage tank is arranged at the top of the processing table; the supporting rod is arranged at the top of the machining table; and the top cover is arranged at the top of the supporting rod. The hydraulic cylinder is started, the hydraulic cylinder operates to drive the heating plate and the upper die block to move, when the upper die block is matched with the lower die block, the heating plate is started to heat the upper die block, so that a gap of a die is tightly filled with a rubber material, after the rubber material forms a required shape, the upper die block and the heating plate are recycled, and the water pump is started again. The water pump operates to suck water in the water storage tank through the water suction pipe, then the water is conveyed into the splitter plate through the water conveying pipe, and the water is sprayed out through the spray head to cool a rubber material, so that the effect of rapidly cooling the rubber sealing ring to maintain the shape and performance of the rubber sealing ring is achieved.

The invention provides an LNG flexible pipeline water hammer-thermal shock coupling fatigue life evaluation method. The method comprises the following steps that an LNG flexible pipeline three-dimensional thermal-mechanical coupling model is established; transient fluid pressure fluctuation and temperature shock in the valve switching process are simulated, and a time-varying temperature field, a stress field and a crack tip stress intensity factor of the pipeline under the water hammer-thermal shock coupling effect are solved; a low-temperature test system is constructed, simulation results and experimental data are compared, and boundary condition parameters in the LNG flexible pipeline three-dimensional thermal-mechanical coupling model are corrected; cyclic load characteristics in the corrected stress response spectrum are extracted based on a rain flow counting method, and in combination with a corrected EPRG empirical model or an SES model, the accumulated fatigue damage amount of the crack-containing pipeline under the water hammer-thermal shock coupling cyclic load is calculated; and predicting the residual fatigue life of the pipeline. According to the method, the prediction precision of the fatigue life of the LNG flexible pipeline under the complex coupling action of the water hammer and the thermal shock is improved.

The application provides a kind of intelligent water meter based on hydroelectric power generation, belongs to water meter technical field.The intelligent water meter based on hydroelectric power generation includes: water meter body, pipeline water flow power generation module and energy storage module.Water meter body and pipeline water flow power generation module are installed in water supply pipeline.The power output end of pipeline water flow power generation module is electrically connected with the charging interface of energy storage module, and the power supply interface of energy storage module is electrically connected with water meter body.It effectively reduces the dependence on external power supply, and reduces the frequency of manual maintenance, can guarantee the long-term stable operation of water meter, reduces the influence of power failure on water meter operation.

The present application relates to sewage treatment technical field, especially sewage treatment intelligent monitoring method and system, including: through sensor obtains rainwater collection drainage node's sewage discharge, water quality parameter and drainage point coordinate, and carries out pretreatment. Based on real-time sewage discharge and pipeline design maximum flow rate, the real-time load rate is calculated, the water quality difference between adjacent nodes and the pipeline water quality difference are analyzed, the path distance is calculated combined with the drainage point coordinates, the exponential function is used to comprehensively evaluate the discharge suitability index, the comprehensive dynamic weight is formed by fusing the real-time load rate, and the A algorithm is used to obtain the optimal path. Based on the comprehensive dynamic weight processing conflict, the intelligent selection of the drainage path is realized, and the operation of the drainage network is optimized. The present application optimizes the selection of the discharge path by calculating the water quality difference between the drainage nodes and the pipeline water quality difference, thereby reducing the risk of pollutant diffusion, improving the sewage treatment efficiency and suitability.

The utility model discloses a protection type automobile hub which comprises a hub body, a mounting frame is arranged on the inner wall of the hub body, a spraying pipe is arranged on the inner side of the mounting frame, a plurality of spraying holes are formed in one side of the spraying pipe and distributed in an array mode at equal intervals, a mounting plate is fixedly connected to one side of the mounting frame, and the mounting plate is fixedly connected to the other side of the mounting frame. A water pump is clamped to one side of the mounting plate, the output end of the water pump is fixedly connected with a water conveying pipe, the other end of the water conveying pipe is connected with a water inlet of the spraying pipe, and the other end of the water pump is connected with a water pumping pipe; a protection plate is connected to one side of the mounting frame in a clamped mode, and a plurality of heat dissipation openings are formed in the protection plate. According to the protective automobile hub, the temperature of parts such as the hub is prevented from being too high, thermal expansion of metal materials of the hub is prevented, deformation of the hub is avoided, controllability and stability of an automobile are guaranteed not to be affected, and safety of a user can be protected.

The utility model is applicable to the technical field of pipeline pressure test tools, and provides a pipeline interface sealing water injection pressure test tool, which comprises a bottom plate, vertical plates are arranged at two ends of the top of the bottom plate in a left-right movable manner, a first bearing plate short pipe and a second bearing plate short pipe are arranged on the inner side of each vertical plate, and the second bearing plate short pipe is provided with a water inlet pipe. According to the pipeline interface sealing type water injection pressure test tool, pipelines to be subjected to pressure test are horizontally stacked in the containing box, an arc-shaped feeding plate is driven to ascend, the pipelines ascend to a discharging opening along with the arc-shaped feeding plate, then a material guide plate is rotated to be aligned with a placement seat, a push plate is pushed to push the pipelines out of the discharging opening, the pipelines slide to the placement seat along the material guide plate, and a transverse plate is driven to ascend; the arc-shaped supporting seat receives the pipeline on the placing seat, the first sliding block is driven to slide, the vertical plate is driven to move to the two ends of the pipeline, the bearing disc short pipe is in butt joint with the pipeline, manual carrying and adjusting are reduced, the labor intensity is reduced, the operation efficiency is improved, pressure test failure caused by positioning errors is avoided, and the pressure test success rate is improved.

The invention discloses a floor heating room temperature accurate control system and method based on multiple input parameters, and belongs to the technical field of building energy saving and heating ventilation air conditioning. After user setting parameters, system real-time state sensing parameters and room fixed parameters are obtained for multiple times and temperature difference is judged, three independent neural network models of a neural network algorithm module are called for calculation, and then a pipeline water supply temperature control instruction and a proportional valve opening degree control instruction are output to a heat source and a pipeline proportional valve respectively; the heat source power is controlled based on the pipeline water supply temperature control instruction, and water at the specified temperature is generated through a water mixing valve to be supplied to a floor heating pipeline; controlling the opening degree of a pipeline proportional valve based on the proportional valve opening degree control instruction so as to adjust the flow of the pipeline, and ensuring that the opening degree of the proportional valve is accurate through a sliding mode algorithm; the set target temperature and the set arrival time are fused, staged dynamic control is carried out based on different neural network models, and time-temperature double-target accurate tracking is achieved in floor heating control.

The utility model discloses a water attack prevention system for an oil conveying pipe, and discloses a water attack prevention system for the oil conveying pipe, which can effectively reduce the safety problem caused by a water attack phenomenon and release pipeline pressure. An oil delivery pipe water hammer prevention system comprises an oil delivery pipe, a pressure relief pipe, a pressure relief tank and an automatic pressure relief valve. One end of the pressure relief pipe is communicated with the oil conveying pipe, and the pressure relief tank is communicated with the other end of the pressure relief pipe. And the pressure relief valve is arranged on the pressure relief pipe. The pressure relief valve controls connection or disconnection of the oil conveying pipe and the pressure relief tank. The opening pressure of the pressure release valve can be adjusted according to requirements. By combining the communication design of the oil delivery pipe and the pressure relief tank, pressure can be released in a graded manner when water attack occurs, pressure shock in the oil delivery pipe is effectively relieved, damage to the pipe body is avoided, and the system safety is improved.

The application belongs to the technical field of aero-engines, and particularly relates to a method for controlling water flow of a multi-pipeline ejection pre-cooling system of an aero-engine. The water flow of the multi-pipeline is allocated by a digital electronic controller, and each pipeline is independently controlled. The given value of the water supply is calculated by means of temperature deviation, closed-loop control is realized, and the fitting degree of the water injection amount and the required cooling amount is improved. Through the feedback of the inlet temperature, the dependence on the control accuracy of the water metering valve can be reduced. Even if the metered water is inaccurate, it can be compensated through temperature closed-loop adjustment, the industrial requirements of the valve and the electro-hydraulic servo valve are reduced, and the production cost is reduced.

1. The name of the design product: automatic pipe water pipe storage rack. 2. The use of the design product: for storing water pipes. 3. The design features of the design product: in shape. 4. The picture or photo that best indicates the design features: perspective view.

The invention discloses water quality monitoring equipment for urban water supply, and relates to the field of water quality monitoring equipment.The water quality monitoring equipment comprises a mounting shell and a mounting barrel, the mounting shell is connected to a branch pipe, and a controller and a display screen are connected to the mounting shell; the mounting cylinder is connected to the mounting shell, and a detection cavity communicated with the water supply network is formed in the bottom of the mounting cylinder; according to the water quality monitoring equipment for urban water supply, by arranging the mounting shell, the mounting cylinder, the telescopic rod, the stirring assembly, the pressure adjusting assembly and the detector, when the water quality of a water body in a water supply pipeline is detected, the telescopic rod extends to drive a sealing plate to be opened and closed, so that flowing water in the pipeline is stored in a detection cavity; the water pressure in the detection cavity is adjusted by the pressure adjusting assembly, the water body in the detection cavity is stirred and mixed by the stirring assembly, and then the water quality of the water body in the detection cavity is detected by the detector through the detection head, so that the water quality of the water body in the pipeline is automatically monitored in real time while high-speed flowing water in the pipeline is prevented from interfering with the detection work of the detection head.

This utility model discloses an exhaust structure for a dissolving tank in an alkali recovery boiler, including a dissolving tank shell, an exhaust pipe installed on the dissolving tank shell, an exhaust pipe connecting box inside the dissolving tank, an outlet of the exhaust pipe connecting box connected to the inlet of the exhaust pipe, a grid installed at the inlet of the exhaust pipe connecting box, and flushing pipes installed on both the exhaust pipe connecting box and the grid, with the flushing pipes connected to pipes, allowing water to flow into the exhaust pipe connecting box along the pipes and flushing pipes; when gas passes through the grid, dust and unvaporized liquid droplets in the gas are captured by the grid, purifying the gas discharged through the dissolving tank by using the grid, reducing the dust content of the discharged gas and increasing the dryness of the gas, and the flushing pipes are installed to periodically flush the exhaust pipe connecting box and the grid, reducing the risk of sodium salt caking and corrosion in the exhaust pipe, and improving the continuous operation cycle of the system.

This utility model discloses a device for monitoring water flow velocity and flow rate in pipelines, relating to the field of pipeline water flow monitoring technology. It includes a monitoring body, one end of which is fixedly connected to an installation component. A sealing component is provided on one side of the installation component, and a pipeline body is provided on one side of the sealing component. The installation component includes a first flange, a second flange bolted to one side of the first flange, a positioning bolt inside the first flange, and a nut on the outer wall of the positioning bolt. This device allows the first and second flanges to pass through the positioning bolt and is secured to the outer wall of the positioning bolt with a nut. After initial installation, a baffle on a long bolt connects the first and second flanges, and the baffle is positioned and fixed by tightening the positioning nut to the outer wall of the long bolt, thus improving the fastening and installation of the monitoring body and the pipeline body.

The invention discloses a pressure steel pipe bifurcated pipe hydraulic pressure test monitoring system and method, and relates to the technical field of bifurcated pipe hydraulic pressure monitoring, and the steel bifurcated pipe hydraulic pressure monitoring system comprises a stress measurement module, a pressure measurement module, a data monitoring platform, and a water pump automatic pressurization control module. The stress measurement module is used for measuring the stress of the steel bifurcated pipe according to the stress characteristics of the Y-shaped symmetrical internally-reinforced steel bifurcated pipe, wherein the stress measurement areas of the steel bifurcated pipe are an obtuse angle area, a crescent rib side pipe wall and a crescent rib plate; the pressure measuring module is provided with four steel pipes on the steel branch pipe, and the four steel pipes are communicated to the interior of the steel branch pipe and are respectively a water injection pipe, a water drainage pipe, an exhaust pipe and a pressurizing pipe. Through a hydraulic test, welding residual stress can be redistributed, tip stress and construction additional deformation of the steel bifurcated pipe are eliminated, local peak clipping stress elimination of the steel bifurcated pipe is achieved, and therefore the overall brittle failure resistance and stress corrosion resistance of the steel bifurcated pipe are improved, and safe and stable operation of the steel bifurcated pipe is guaranteed.

The utility model relates to the technical field of ultrapure water equipment, in particular to a pipeline water circulation control device which comprises an operation table and a regulation and control mechanism. The regulation and control mechanism comprises a water storage unit, a main control box and a monitoring assembly, the water storage unit is fixedly connected with the operation table, the main control box is fixedly connected with the operation table, the monitoring assembly comprises a water inlet pipe, a first valve, a water supply pump, a water supply pipe, a water pressure sensor, a flow sensor and an auxiliary part, the water inlet pipe is fixedly connected with the water storage unit, and the first valve is fixedly connected with the water storage unit; the water supply pump is fixedly connected with the operation table, the water supply pipe is fixedly connected with the output end of the water supply pump, the water pressure sensor is fixedly connected with the water supply pipe, the flow sensor is fixedly connected with the water supply pipe, and the auxiliary part is fixedly connected with the water supply pipe, so that the water pressure and flow of pipeline water supply can be monitored in real time, the rotating speed of the water supply pump set is automatically adjusted, and energy consumption is optimized. The water quality stability is improved, and the breeding of bacteria and biological membranes is reduced.

The application discloses a method for over-river pipe water connection and a floating box device in the technical field of over-river pipe construction, and comprises a box body, both ends of the box body along the axial direction are provided with openings for inserting the to-be-connected pipe, a sealing structure is arranged on the periphery of the opening, the box body is provided with an openable and closable sealing window and a submersible pump, and the water inlet of the submersible pump is communicated with the space in the box body. Through optimization of the box body structure, integration of the sealing and positioning functions and simplification of the transportation and assembly process, the problems of water flow interference, poor weld quality, low positioning accuracy, weak adaptability and inconvenient transportation of the over-river pipe water connection welding are solved, the effective of the connection edge amount is realized, and the one-time qualified rate of the weld is improved. The device and the method shorten the connection period, reduce the construction cost and the safety risk, and are suitable for the connection of over-river pipes with different diameters.

The utility model relates to a kind of online liquid cooling constant-temperature thin-walled section shaping device, including base, stand, lower shaping roll and upper shaping roll, upper shaping roll and lower shaping roll structure are same, upper shaping roll includes hollow shaft, shaping roll cover, water collecting tray, water return pipe water inlet joint, water return pipe water inlet joint, stand is equipped with lower bearing seat, stand is equipped with upper bearing seat, water collecting tray is equipped with water return cavity, water collecting tray surface is equipped with water return hole, water return cavity is connected with water return pipe, hollow shaft between water collecting tray is equipped with water inlet hole.The utility model sets up upper shaping roll and lower shaping roll into hollow roll and is connected to circulating cooling system, so that upper shaping roll and lower shaping roll constant temperature in whole shaping process, prevent upper shaping roll and lower shaping roll expansion after temperature rise and cause shaping precision to drop, it is convenient to directly connect extrusion production line of section, reduce process, the design of water collecting tray and hollow shaft ensures that shaping roll cover temperature is uniform, prevent the deformation caused by temperature uneven.

The utility model relates to an adjustable pulse water distributor, it includes water tank, the water inlet pipe and the mud inlet pipe in water tank upper part, place in the water distribution main pipe of water tank, with the siphon of water distribution main pipe conduction, wherein the water distribution main pipe sets up in the water tank and presents the inverted U type structure, one end stretches out the water tank and is the water outlet of water distribution main pipe, one end is in the water tank and is the water inlet of water distribution main pipe, the siphon includes siphon main pipe, siphon auxiliary pipe and siphon destruction pipe, wherein the siphon main pipe with water distribution main pipe water inlet side conduction, siphon main pipe passes through siphon auxiliary pipe and siphon destruction pipe conduction, siphon auxiliary pipe still with water distribution main pipe top conduction, its characterized in with: water level adjusting spare is provided at water distribution main pipe water inlet.

The utility model relates to the technical field of faucets, and particularly discloses an induction type water-saving faucet which comprises a main pipe, an induction part arranged on the side wall of the main pipe, a water outlet pipe arranged on the side wall of the main pipe, a driving mechanism arranged in the main pipe and used for controlling the water outlet form of the water outlet pipe, and a protection box fixedly connected to the upper end of the main pipe. A controller is arranged in the protection box and electrically connected with the driving mechanism and the sensing component, the water outlet pipe comprises an outer pipe and an inner pipe, the outer pipe is fixedly connected to the side wall of the main pipe, the inner pipe is arranged in the outer pipe, the inner wall of the outer pipe is away from the outer wall of the inner pipe, and the outer pipe is connected with the free end of the inner pipe through an atomization nozzle. When the sensing part detects the cleaning requirement, the controller immediately instructs the driving mechanism to start, and then the second through hole is opened, so that water flow is sprayed out in a mist form through the atomizing nozzle, and atomized spraying of water is realized for cleaning; the process not only ensures the cleaning effect, but also contributes to saving water resources.

The utility model discloses a blowpipe water resistance control device which comprises a blowpipe body, a contact head, an adjusting assembly and a positioning piece, an air outlet pipe body is arranged at the bottom of the blowpipe body, a connecting piece used for connecting the air outlet pipe body and the contact head is arranged between the air outlet pipe body and the contact head, the adjusting assembly comprises a spring, and the spring is connected with the air outlet pipe body. A fixing plate is arranged at the top end of the spring, and a positioning hole is formed in the outer wall of the air blowing pipe body. By means of the design of the blowing pipe body, the contact head, the positioning piece and the adjusting assembly, the height of the fixing plate is determined by inserting the positioning bolt into the mounting block and the positioning hole, so that the initial height of the contact head is determined, and when a glass bottle is conveyed to the bottom of the contact head, the contact head is extruded by the glass bottle, so that the contact head is fixed. And the spring is compressed, and the height of the contact head is increased, so that the contact head can adapt to glass medicine bottles with various heights.

This invention provides a method for identifying and locating leaks in tunnel pipes using X-ray imaging from a mobile inspection vehicle, belonging to the field of leak detection technology based on motion control and image processing. First, an intelligent information acquisition system for identifying and locating leaks within the tunnel pipe wall is constructed. Then, an adaptive collaborative model for robotic arm posture adjustment and inspection vehicle speed is designed. The inspection vehicle speed is dynamically adjusted based on the tunnel pipe distribution density, with the perpendicularity of the X-ray transmission direction to the pipe axis as the sole control benchmark. Combined with the real-time adjustment of the 6-axis robotic arm's posture parameters based on the inspection vehicle speed, automatic tunnel information acquisition is achieved without stopping the vehicle. Using the acquired X-ray image data as input, leak-related features are identified, and the identification results are output. For pipes with potential leaks, a pipe leak risk impact decision model is constructed, outputting the pipe leak risk impact level and executing graded early warnings. This invention achieves intelligent identification of hidden leaks in tunnels, improving the coverage and accuracy of tunnel pipe hazard investigation.

The utility model discloses a heavy metal contaminated soil remediation agent feeding device which comprises a feeding vehicle and a feeding mechanism. A wetting mechanism is arranged at the upper end of the putting vehicle and comprises water tanks, a connecting pipeline and a spraying pipeline, the water tanks are arranged on the front side and the rear side of the upper end of the putting vehicle, the spraying pipeline is fixedly connected to the lower end of the putting vehicle and is a mouth-shaped pipeline, and the lower ends of the water tanks are communicated with the spraying pipeline through the connecting pipeline; the feeding mechanism comprises a storage hopper, a telescopic sleeve, a feeding hopper and a shaking assembly, the storage hopper is fixedly connected to the middle of the upper end of the feeding vehicle, the lower end of the storage hopper is fixedly sleeved with the telescopic sleeve, and the feeding hopper is fixedly connected to the interior of the lower end of the telescopic sleeve. More uniform feeding is achieved in a shaking discharging mode, meanwhile, the agent is directly wetted after being fed, and the situation that the treatment time is delayed due to the too high wind speed is avoided.

The utility model discloses a kind of exhaust duct water vapor condensation collection devices, it is related to tobacco processing equipment technical field, exhaust duct inside close to the export of fan is parallel to the condensing plate of dense arrangement in flow direction, heat pipe is embedded into each condensing plate, with each condensing plate heat conduction connection fixed, and communicate to in circulating water cooling loop;The bottom of condensing plate is inclined plate structure by two sides respectively downward, and form the flow guide portion at the intersection of two side inclined plate structure, and the flow guide portion is directly below the liquid guide plate fixedly arranged with exhaust duct installation.The utility model condenses water vapor in high-humidity flue gas by condensing plate, and condensate is directly discharged exhaust duct by the flow of condensing plate and liquid guide plate in the position close to fan export;Circulating water cooling loop carries out circulating heat dissipation cooling to condensing plate, effectively solve the problem of exhaust duct inner wall scale caused by high-humidity flue gas, conducive to the control of equipment maintenance cost and the guarantee of production continuity.

The utility model discloses a skid-mounted circulating water pump system, and relates to the field of water pumps. The skid-mounted circulating water pump system comprises a frame and two groups of water pumps, water inlet pipes are mounted on water inlet end flanges of the water pumps, a first water inlet and a second water inlet are formed in one ends, far away from the two groups of water pumps, of the two groups of water inlet pipes respectively, and a basket filter and a ball valve are mounted on the water inlet pipes in a communicated manner. All parts such as a pipeline and a water pump in the water pump system can be quickly mounted and fixed on the whole mounting frame through the U-shaped hoops, so that standardized and modular assembly of the water pump system is realized, quick design and manufacturing of water pump systems of different specifications can be realized, design and manufacturing cost is remarkably reduced, integral skid-mounted delivery is realized after assembly is completed in a factory, and the production efficiency is greatly improved. Only simple operations such as in-place and butt-joint pipeline and cable connection are needed on site, and the problems that a traditional circulating water pump system is difficult to install, low in efficiency and high in cost are effectively solved.

The present application relates to the technical field of ship offshore test, particularly relates to a kind of offshore wind power floating platform special-purpose stainless steel pipe water entry simulation test device and use method. Including the steel pipe limiting unit for fixing steel pipe, the steel pipe limiting unit is provided with the outer measuring unit for applying pressure to steel pipe from outside directly above, the steel pipe limiting unit and outer measuring unit main body are all fan-shaped structure. The present application is extended to the inside of steel pipe by electric push rod driven inner measuring head body, then start micro servo cylinder to push the pestle head to extend to extension way, and sliding fit occurs with each group of inclined plane, so that each group of test block is pushed out side export, and simultaneously extruding to each orientation of steel pipe inner wall, then control micro servo cylinder reset, so as to realize the anti-pressure test to steel pipe inner wall. Steel pipe inside and outside can be tested, and the functionality of the device is enriched.

The application relates to a fire-fighting pipe water spraying angle adjusting device for fire fighting, and belongs to the technical field of fire-fighting equipment. The device comprises a base box and a spraying head. Multi-direction rotating devices are arranged on the proximal sides of the base box and the spraying head. The multi-direction rotating devices comprise a fixed cylinder rotatingly connected to the base box, a connecting frame connected to the fixed cylinder, and the spraying head connected to the connecting frame. A driving device is arranged in the base box. The driving device comprises a first driving part and a second driving part. The first driving part is connected to the fixed cylinder. The second driving part comprises a gear pair connected to the connecting frame. The first driving part and the second driving part are respectively operated to automatically rotate the spraying head to different angles. The application realizes automatic, accurate adjustment and stable keeping of the horizontal and pitching angles of the fire-fighting spraying head through two sets of independent self-locking driving mechanisms, and improves the safety, efficiency and covering precision of fire extinguishing operation.

The present application relates to intelligent inspection robot and collaborative control method, the inspection robot of the present application carries out twice fire determination to mineral conveying belt through different sensors, which can effectively reduce the false positive rate of fire condition; when fire occurs, the inspection robot carries out rapid fire source inspection and gives the range and position distribution of the fire source, which can effectively assist artificial fire handling; in the charging state, the resting working mode is adopted to realize the uninterrupted monitoring of the inspection robot; the method of the present application cooperatively controls the opening and closing of the water spraying pipe water outlet according to the spraying strategy, so as to reduce the dust mist generation and the influence of the water spraying mist on the mineral to the greatest extent, and different monitoring strategies are adopted according to the differences of the mineral conveying area, so as to realize the improvement of the monitoring efficiency of different mineral conveying areas, and directly output the accident position image and other information, which effectively improves the maintenance efficiency of artificial intervention.

This invention provides a method for the actual calculation of the inertial time constant of water flow in a hydropower unit. It defines a time-invariant inertial time constant based on rated operating parameters; establishes a rigid water hammer transient transfer function that includes the effects of pipeline hydraulic losses and the inertial time constant, thus avoiding the difficulties in measuring large-diameter flow rates in hydropower stations; establishes a transfer function model between the guide vane opening increment and the volute pressure increment based on the rigid water hammer transient transfer function; and establishes a calculation formula for the inertial time constant based on the measured transient data of the guide vane opening increment and the volute pressure increment, using the transfer function model. By performing tests and calculations near rated operating conditions, this method avoids the difficulty in calculating the overflow coefficient due to guide vane opening deviation, and solves the measurement difficulties caused by the fact that the influence of the inertial time constant only exists in the transient process and disappears in steady state.