1507results about "Level control" patented technology

A system for controlling a charging of an electric vehicle, wherein a charging at one electric vehicle charging station affect a charging at another electric vehicle charging station is disclosed. The system includes: an electric power grid, a first electric vehicle charging station connected to the electric power grid, and a second electric vehicle charging station connected to the electric power grid, wherein the first electric vehicle charging station facilitates a charge transfer for an electric vehicle at the second electric vehicle charging station using a mobile device. The mobile device relays communication from the electric vehicle charging stations to the cloud server. The charge transfer request received at the cloud server is authorized using identification information and credit account information received from the mobile device. The charge transfer at the first electric vehicle charging station is adjusted based on a charging level at the second electric vehicle charging station.

According to the coastal saline-alkali land underground water level adjusting system based on real-time monitoring and intelligent regulation and control, the system integrates the soil salinity sensor, the underground water level sensor and the central processing unit, future trend prediction is carried out by monitoring key parameters such as soil salinity and underground water level in real time in combination with a deep learning model, and the real-time monitoring and intelligent regulation and control are achieved. And precise intelligent regulation and control are realized. The system can effectively reduce soil salinization, prevent seawater from flowing backwards, improve the utilization efficiency of water resources and reduce the labor management cost at the same time. The method is characterized in that the application of multi-parameter comprehensive monitoring, a deep learning prediction model and a self-adaptive intelligent regulation and control algorithm provides a new technical solution for coastal saline-alkali land treatment.

The invention provides a hydro-junction water level adjusting method and system. Wherein the sediment deposition space-time atlas containing the sedimentary gradient is constructed and periodically corrected through scanning of an underwater robot and synchronous acquisition of satellite remote sensing data. A radar array is deployed at a bend section of a flood discharge channel, and vector distribution of a three-dimensional sediment flow velocity field is analyzed by using multi-frequency pulse signals. Through correlation analysis of the dynamic coupling sedimentary gradient and the flow velocity field, a correlation area of flow velocity sudden change and sediment deposition is accurately identified, and a constraint condition set including coordinate positioning and a flow-sediment matching rule is established. And in combination with real-time water level monitoring data, calculating and generating a dynamic adjustment parameter sequence of the opening degree of the flood discharge gate by using a constraint condition set, thereby realizing accurate regulation and control of the water level. According to the technical scheme, the flood discharge parameters are intelligently optimized, the water level of the hydro-junction can be accurately regulated and controlled, the sediment deposition problem of a high-sediment-content water area is effectively relieved, and safe operation and flood control efficiency of the junction are guaranteed.

Disclosed is a water heater including a case provided with an air supply hole and an air discharge hole, a burner provided in an interior of the case, and a humidified air supply part that provides humidified air to the burner together with a fuel. The humidified air supply part includes a first accommodation tank that accommodates water to generate vapor, and a humidified air supply tank that provides a space for supplying the vapor supplied from the first accommodation tank to air introduced into an interior of the case through the air supply hole.

The invention is suitable for the technical field of computers, and provides a water level control method and device for a steam generator, terminal equipment and a storage medium, and the method comprises the steps that in a low-load working condition mode, a first target parameter of the steam generator is obtained, and first water level control over the steam generator is achieved according to the first target parameter; in the high-load working condition mode, a second target parameter of the steam generator is obtained, and second water level control over the steam generator is achieved according to the second target parameter; in the random fault mode, a third target parameter of the steam generator is obtained, and third water level control over the steam generator is achieved according to the third target parameter; wherein the first target parameter, the second target parameter and the third target parameter are all parameters used for evaluating the water level state of the steam generator. According to the embodiment, the water level stability of the steam generator can be effectively improved, and then the operation safety and stability of a nuclear power unit are improved.

The invention discloses a two-phase immersed liquid cooling liquid level intelligent dynamic regulation and control system and method, and relates to the technical field of liquid cooling intelligent processing. The two-phase immersion type liquid cooling liquid level intelligent dynamic regulation and control method comprises the steps that S1, state observation data, execution control data and log data in the liquid cooling liquid level regulation and control process are collected and preprocessed, and a standardized liquid cooling state data set is constructed; s2, the synchronism of the evaporation strengthening trend is evaluated, and the opening degree of an electronic control valve is adjusted; s3, analyzing a control feasible region under gas-liquid balance constraint, and optimizing the working mode of the two-way pump; and S4, the consistency of the feedback trend and the rolling decision is analyzed, and the circulating flow of the cooling coil and the heat exchange intensity of the condenser are adjusted. The problems that when power consumption of an existing two-phase immersion liquid cooling system changes dramatically, due to lag control of a single sensor and lack of multi-dimensional data prediction, evaporation and liquid supplementing actions are prone to being mismatched, and liquid level decline, pressure abnormity and chip dry burning are caused are solved.

The invention relates to the field of intelligent control based on image recognition, and discloses a Lyocell fiber production continuous feeding control method and system based on image recognition, and in the method, a feeding and conveying device continuously feeds a pulp raw material into a swelling machine at a preset feeding speed without shutdown; moreover, a camera arranged in the swelling machine obtains a to-be-detected liquid level image in the swelling machine containing the circular liquid level boundary in the non-stop continuous feeding state, then the current liquid level height in the swelling machine is obtained according to the to-be-detected liquid level image, the current liquid level height is compared with the target liquid level height, and a liquid level difference value is obtained; and the liquid level difference value serves as a control factor, the opening degree of a solvent conveying pump at a solvent inlet of the swelling machine is controlled based on a PID control algorithm, and the current liquid level height in the swelling machine is kept within a set range. Waste of production time is avoided, the large-yield requirement is met, and the overall production efficiency is improved; in addition, it is also ensured that the produced pulp porridge has good uniformity.

A grain unloading monitoring system for use in operations moving grain from a grain cart to a grain truck or container utilizing at least one sensor configured to monitor a grain level within a grain container, a processor in electronic communication with the at least one sensor, and a command module in electronic communication with the processor. The command module is configured to command one or more components on a grain cart or grain container to distribute unloaded grain and prevent overfilling of the grain container based on the monitored grain level and grain fill rate.

The invention relates to a liquid level safety control method based on an unknown input observer. The method comprises the following steps: establishing a state equation of liquid level change under spoofing attack and a corresponding sensor measurement output equation; constructing a random network attack model by utilizing a Bernoulli variable; performing output transformation on the sensor spoofing attack signal; selecting a non-singular state transformation matrix for state transformation, and designing an interval observer; designing an unknown input observer based on an output signal of the interval observer, and estimating an actual liquid level state of the liquid level control system, an attack signal received by an actuator and an attack signal received by a sensor; and based on the estimation signal, designing a compensation controller for adjusting the liquid level state change and carrying out liquid level control. Compared with the prior art, unknown input reconstruction design is carried out for spoofing attacks, then the corresponding compensation controller is designed, the influence of an attack system on the system is greatly reduced, and therefore safe operation of the liquid level control system is guaranteed.

The invention discloses a double-capacity water tank control method based on multi-target reward Q learning, and belongs to the technical field of machine learning and automatic control. The method comprises the following steps: firstly, establishing a discretization mathematical model of a double-capacity water tank liquid level control system, and designing a multi-target reward function; secondly, empirical data are stored only when the liquid level tracking error exceeds the limit or the control quantity suddenly changes, and sampling weights are distributed according to award absolute values; and finally, updating the Q table based on the time difference error, and performing closed-loop real-time control on the double-tank water tank according to the dynamically adjusted PID parameter. According to the method, a five-dimensional reward function is designed, and multi-index dynamic balance is realized through linear weighting; the empirical tuple is stored only when the liquid level tracking error exceeds the limit, and the quick response requirement of the dynamic time-varying scene of the double-capacity water tank is met; dimensionality reduction is performed on a continuous state space by adopting a non-uniform grading strategy, so that the calculation complexity is remarkably reduced; a perception-decision-execution integrated framework is constructed, and the dependence of a traditional control method on a mathematical model of the water tank is abandoned.

The invention relates to the technical field of foundation pit drainage, and provides a deep foundation pit drainage system and a use method.The method comprises the steps that a1, an annular dewatering well is arranged on the periphery of a deep foundation pit, and underground water is collected and lowered through the annular dewatering well; a2, a drainage network in the foundation pit is established to eliminate surface rainfall and seepage water; a3, based on a preset water level control strategy, a drainage pumping device is started to drain the collected underground water away from the foundation pit; a4, hydrological changes inside and outside the deep foundation pit are monitored, and operation parameters of the dewatering well and the drainage system are adjusted in time so that the safe water level state in the deep foundation pit can be maintained; through the scheme of the embodiment of the invention, the problem of how to effectively prevent underground water from seeping into the foundation pit in a high-water-level area by the deep foundation pit drainage system can be solved.

The invention discloses a water level monitoring system based on flood discharge gate control, and relates to the technical field of flood discharge gate control, and the water level monitoring system comprises an upstream water level monitoring module, a downstream water level monitoring module, a gate discharge monitoring module, an early warning terminal and a database. Analyzing a water level future coefficient corresponding to the upstream end of the reservoir, judging whether the reservoir needs to open a gate for flood discharge or not, and analyzing to obtain a gate opening width corresponding to flood discharge of the reservoir, and analyzing to obtain a gate opening width corresponding to development of the downstream end of the reservoir when no flood occurs at the upstream end of the reservoir; meanwhile, the state of the reservoir gate during flood discharge is known, and whether adjustment is conducted or not is analyzed, so that safe reservoir flood discharge is achieved, ecological safety is guaranteed, efficient and accurate flood discharge is achieved, it is further guaranteed that surrounding development obtains effective water source support, and reasonable allocation of water resources and efficient utilization of the resources are achieved.

The invention provides a method and device for controlling the liquid level of molten glass in a kiln, a terminal and a medium. The method comprises the following steps: acquiring structural parameters and thermal parameters of the kiln; based on the structural parameters and the thermal parameters, constructing a dynamic mathematical model for describing the liquid level change of the molten glass; the target function of the dynamic mathematical model is used for measuring the deviation between the actual liquid level height and the ideal liquid level height of the molten glass in the kiln; calculating an optimal control law that minimizes an objective function of the dynamic mathematical model based on a linear quadratic regulator algorithm; and adjusting the liquid level height of the molten glass in the kiln based on the optimal control law. According to the method, the dynamic mathematical model used for describing the liquid level change of the molten glass is constructed, the deviation minimization between the actual liquid level height and the ideal liquid level height of the molten glass in the kiln serves as the target, the optimal control strategy is determined, and high-precision stable control over the liquid level height of the molten glass in the kiln is achieved.

The present disclosure provides a non-condensable gas reduction system that is easy to maintain and returns non-condensable gas contained in geothermal fluid to a reduction well. [Solution] A non-condensable gas reduction system for use in a geothermal power plant comprising a gas-liquid separator that separates geothermal fluid flowing from a production well into a first gas and a first liquid, an evaporator that performs heat exchange between the first gas and a working medium, a turbine that rotates by the working medium discharged from the evaporator, and a condenser that cools the working medium that rotates the turbine and condenses the working medium into a liquid, the non-condensable gas reduction system comprising: a pump that pressurizes a third liquid to be sent to a reinjection well; and an ejector driven by the third liquid, that attracts non-condensable gas contained in the first gas and remaining uncondensed in the evaporator, and discharges a fourth liquid which is a mixture of the third liquid and the non-condensable gas, wherein the first liquid and the fourth liquid are mixed and sent to the reinjection well.

A liquid level controlling apparatus includes a plurality of main sinks, a storage sink, a pump and a connection tube. One of the plurality of main sinks includes a transmission port and a first liquid level detector. The storage sink includes a delivery port and a second liquid level detector. The pump includes an outlet and an inlet. The connection tube includes an rehydration tube and an drain tube. The rehydration tube has a first rehydration section and a second rehydration section. The first rehydration section is connected between the delivery port and the inlet. The second rehydration section is connected between the outlet and the transmission port. The drain tube has a first drain section and a second drain section. The first drain section is connected between the transmission port and the inlet. The second drain section is connected between the outlet and the delivery port.

The invention is suitable for the technical field of pump station intelligent control, and provides a pump station water level self-adaptive regulation and control method and system, and the method comprises the following steps: obtaining water level time sequence data, equipment state data and environment information data in real time; predicting a water level value of a future preset time window based on a physical mechanism prediction model according to the water level time sequence data, the equipment state data and the environment information data to obtain a first prediction value; based on a data-driven prediction model, according to the water level time sequence data, the equipment state data and the environment information data, predicting a water level value of a future preset time window to obtain a second prediction value; performing adaptive weighted fusion on the first predicted value and the second predicted value to obtain a comprehensive predicted value; and according to the comprehensive predicted value, carrying out self-adaptive regulation and control on the pump station water level. According to the invention, by constructing a hybrid prediction model based on a physical mechanism and data driving and introducing an adaptive weighted fusion mechanism, accurate short-term prediction and adaptive regulation and control of the future water level are realized.

The invention relates to the technical field of drainage control, in particular to a liquid level sensing drainage control method and system based on electronic and floating ball cooperative detection, and the method comprises the steps: fusing the angular displacement, capacitance value and acceleration disturbance data of a floating ball, and constructing a liquid level state observer; a dynamic compensation factor is introduced to strip liquid shaking interference, and an accurate liquid level reference value is obtained; a composite control vector is constructed based on the liquid level deviation and the change rate, and a drainage instruction is generated through analysis to control a valve to act; meanwhile, a self-adaptive feedback adjustment mechanism is established, observer parameters are dynamically calibrated through liquid level response residual errors, and the drifting error of an actuator is offset; according to the technical scheme, the robustness of drainage control can be remarkably improved.

The invention relates to the technical field of prefabricated pump stations, in particular to a liquid level detection control device for a multifunctional prefabricated pump station, which comprises a transmission line, a balancing weight and a shell, and further comprises an air bag, a baffle plate, a first connecting pipe and a second connecting pipe, the transmission line is communicated with an external control system, and the balancing weight is sleeved on the surface of the transmission line; the bottom of the transmission line is sleeved with the shell, the baffle is arranged around the transmission line, a vertical groove is formed in the side, close to the transmission line, of the baffle, the air bag is fixedly installed at the bottom of the baffle, the first connecting pipe is arranged on the surface of the air bag and penetrates through the balancing weight to communicate the air bag with the interior of the shell, and the second connecting pipe is arranged on the surface of the shell. The surface of the baffle is provided with an air port, the air port communicates with the interior of the shell through a second connecting pipe, the air bag deforms through rising or falling of the water level in the prefabricated pump station to conduct air suction and exhaust, air in the air bag can circulate in the shell, and when the shell floats upwards or descends, the surface of the shell deforms.

The invention discloses a ship ballast water tank water level real-time monitoring and remote control device, and relates to the field of ship ballast water tank water level control. According to the real-time monitoring and remote control device for the water level of the ship ballast water tank, a first data acquisition and analysis unit is used for acquiring water level monitoring data of each ballast water tank of a ship to be controlled in real time and analyzing the water level monitoring data to obtain an adjusted water level value; the second data acquisition and analysis unit is used for acquiring the ship state monitoring data and the sea condition monitoring data, analyzing to obtain a ship state water level regulation factor and a sea condition water level regulation factor, and analyzing to obtain a corresponding comprehensive water level regulation factor; the water level monitoring value of the corresponding ballast water tank is obtained through the comparison control unit, the water level monitoring value and the water level control interval are analyzed, and control measures are taken based on the analysis result so as to ensure that the water level of the ballast water tank can be corrected in time under the severe sea condition. Therefore, the sailing safety of the ship is enhanced.

The invention discloses an open channel high-flow interference water level control method based on storage compensation and improved PID coupling, and the method comprises the following steps: collecting channel operation parameters in real time, including current flow, water level fluctuation amplitude, predicted demand and on-way resistance coefficient distribution; dynamically constructing a channel damping effect model based on the on-way resistance coefficient distribution, calculating water level control response delay time, and generating a preposed adjustment coefficient; dynamically adjusting the actual participation volume according to the maximum effective storage volume and the maximum effective storage volume of the stagnant storage area; a compensation control quantity is generated by the input improved PID controller; and the compensation control quantity is executed to adjust the opening degree of the channel gate, and dynamic suppression of water level fluctuation is achieved. The water level stability and the control effect of the open channel can be improved.

The invention provides an informatization intelligent drainage management method and system, and relates to the technical field of drainage management, and the method comprises the steps: obtaining water level data, first flow data and pump station flow control data, and obtaining a water level change function; determining a predicted rainwater inflow amount, predicting a water inlet pipeline inflow amount and determining predicted water inlet flow data; and determining predicted pump station flow control data according to the predicted water inlet flow data and the water level change function, and adjusting the pump station of the drainage pipeline at the beginning of the next monitoring period. According to the method and the device, the water level change function capable of describing the relation among the water level data, the first flow data and the pump station flow control data can be determined, then the predicted pump station flow control data of the pump stations of the drainage pipelines of the water storage areas are determined, the drainage flow of the water storage areas is optimized, the drainage flow of the areas can be coordinated, and the drainage efficiency is improved. The water level of each water storage area is in a reasonable range, and risks such as overflow of the reservoir in each area are reduced.

The invention discloses an integrated control method for a flood discharge gate of a hydropower station, relates to the technical field of water conservancy systems, and solves the technical problem that the opening degree of the gate cannot be adjusted according to the corresponding power generation efficiency, so that energy conversion of water resources is wasted in the flood discharge process. Whether corresponding gate opening work needs to be carried out or not is judged by comparing the current water level with the standard water level, water level early warning is carried out on the whole hydropower station through water level monitoring in the cycle time when gate opening is not needed, the overall safety is improved, and the water level early warning is carried out on the whole hydropower station according to the condition that gate opening is needed. The corresponding gate opening degree is calculated in combination with factors in multiple aspects, the corresponding power generation efficiency is calculated according to the gate opening degree, the power generation efficiency is analyzed and judged, comprehensive adjustment is further carried out according to historical data for unreasonable conditions, and the power generation efficiency is improved. The purpose of reasonable power generation can be achieved by reasonably utilizing water energy generated in the flood discharge process while flood discharge is conducted, and the purpose of reasonable utilization of resources is achieved.

The invention discloses a curve model filtering-based high-speed wire rotational flow pool liquid level correction control method and system, and relates to the technical field of steel production, and the method comprises the following steps: collecting a liquid level signal, and constructing a fixed curve model according to a process stage; a staged deviation zone is set according to the model, deviation is compared and calculated in real time, and abnormity judgment is carried out; performing previous normal value substitution, model prediction value substitution or triggering process alarm on the abnormal section according to the duration to obtain a substitution sequence; and performing composite filtering on the alternative sequence, and outputting a corrected liquid level for closed-loop control and visualization. Through four-stage fixed curve modeling and staged deviation band judgment, graded substitution is triggered by a pull-back amount, a phase drift amount and a logic consistency rate, and compound filtering closed-loop control is performed on a substitution sequence, so that accurate anomaly detection, low false alarm, continuous curve and stable control are realized.

The invention discloses a fuming furnace waste heat boiler liquid level automatic control device, method and system and a medium, and the method comprises the steps that sensing data are obtained and preprocessed, and the sensing data at least comprise steam drum liquid level data, steam output flow data and boiler feed water flow data; performing three-impulse cascade PID control based on the sensing data to obtain a control instruction, wherein the control instruction comprises a theoretical water replenishing value, a valve opening instruction and a water pump frequency converter adjusting instruction; regulating valve control and constant pressure difference control are carried out based on the control instruction in combination with a preset interval; and performing synchronous control based on a preset safety interlocking protection mechanism, wherein the synchronous control comprises pump spare power automatic switching, regulating valve abnormity alarm, over-limit water level interlocking and man-machine interaction. Through innovative three-impulse cascade PI D, dynamic interval control and constant pressure difference optimization, the defects of a traditional method under the complex working condition of the fuming furnace are overcome, high-precision and high-stability liquid level control is achieved, and meanwhile equipment safety and economical efficiency are remarkably improved.

The invention belongs to the technical field of intelligent control, and particularly relates to a water gate intelligent control method based on water conservancy monitoring data, and the method comprises the steps: collecting monitoring data and a water surface video of a water storage body where a water gate is located; estimating flow data of a plurality of to-be-evaluated positions according to the flow data of a plurality of monitoring positions in the monitoring data, inputting the flow data and the monitoring data into a water level prediction model, and adjusting the opening degree of a water gate according to an obtained water level prediction value; wherein the flow data of the plurality of to-be-evaluated positions is estimated by selecting a plurality of principal components from all components according to stability and distinction, dividing all the principal components into a plurality of high-frequency components and a plurality of low-frequency components according to frequency, and estimating the flow data of the plurality of to-be-evaluated positions according to the convergence of the to-be-evaluated positions and adjacent monitoring positions on the low-frequency components. And determining an estimated value of the flow data of the to-be-evaluated position according to the high-frequency component of the to-be-evaluated position and the convergence of the to-be-evaluated position and other monitoring positions on the high-frequency component. According to the invention, the accuracy of intelligent control is improved.

The invention relates to the technical field of flotation machinery, and particularly discloses a high-precision automatic liquid level control system which comprises an intelligent controller, a PID controller, a laser distance measuring sensor, a floating ball and an intelligent valve positioner, the floating ball floats on the upper surface of liquid in a flotation tank, and the upper end of the floating ball is connected with a position feedback plate; the laser distance measuring sensor is used for measuring the position of the position feedback plate to obtain an actual liquid level and transmitting the actual liquid level data to the PID controller; the PID controller is used for carrying out PID operation on the actual liquid level and the set liquid level and outputting a signal to the intelligent valve positioner, and the intelligent valve positioner is used for controlling the air cylinder to move and opening or closing the valve through the linkage mechanism and feeding back execution parameters to the intelligent controller, so that the liquid level is automatically adjusted on line.

The invention relates to the technical field of wax dipping equipment, and provides wax film wax dipping equipment which comprises a wax dipping furnace, a first mounting frame, a second mounting frame, a first ultrasonic sensor, a first pneumatic valve, a wax supplementing furnace, a clamping part, a controller, a lifting module and a rotating module, the lifting module is mounted at one end, close to the wax dipping furnace, of the first mounting frame, the rotating module is connected with a liftable part of the lifting module, and the clamping part is connected with a rotatable part of the rotating module; the rotating module is used for rotating a product to be waxed, the clamping part is used for clamping the product to be waxed, when the waxing operation is executed, the lifting module moves downwards to enable the product at the clamping part connected with the rotating module to be soaked in wax liquid of the waxing furnace, and the lifting module moves upwards to enable the product at the clamping part to be separated from the wax liquid and then drives the product to be waxed. And the rotating module is used for enabling the product at the clamping part to rotate clockwise or anticlockwise around the axis.

The invention relates to the technical field of water supply control, and provides a water source regulation and control system and method based on improved PID control, and the method comprises the following steps: obtaining monitoring data of a water plant, including water inlet flow and water outlet flow of a water source clean water tank; monitoring data are input into the improved PID controller, PID parameters are adjusted in a self-adaptive mode according to the obtained difference value of the water inlet flow and the water outlet flow, PID adjustment is executed according to the adjusted PID parameters, and the regulation and control amount of the water inlet amount of the emergency water source is output; and regulating and controlling the execution mechanism based on the regulation and control quantity to realize water inlet control of the water source. According to the invention, the PID parameters of the PID controller are automatically adjusted and the PID controller is improved based on the real-time difference between the inlet water and the outlet water of the clear water tank of the water plant, so that the liquid level of the clear water tank of the water plant of the emergency water source can be controlled in real time, the liquid level change can be responded more quickly and accurately, and the waste of water resources is avoided.

The invention relates to the technical field of breeding, in particular to a breeding harmful waste gas purification device. The technical problem to be solved is to provide the breeding harmful waste gas purification device capable of effectively treating breeding waste gas. Comprising a shell, a through hole is formed in the upper end of the shell, an exhaust port is formed in the through hole in the upper portion of the shell, a mounting circular plate is fixed in the shell, the U-shaped liquid storage barrel is fixedly connected in the shell, a venturi tube is fixedly connected in the U-shaped liquid storage barrel, one end of the venturi tube is fixedly connected and communicated with a rotating barrel, and an impeller is rotationally connected in the rotating barrel. Waste gas is absorbed through the absorption liquid, bubbles are broken through high-speed water flow at the liquid inlet end of the venturi tube, the bubbles are broken and turbulent flow is generated when the driving rods rotate in a staggered mode, absorption of harmful gas in the bubbles is accelerated, the absorption liquid is atomized through the atomization nozzle, the contact area of the absorption liquid and the bubbles is increased, and the waste gas absorption effect of the absorption liquid is improved.

The present application relates to a kind of water spraying truck water level intelligent control system, including frame, the top of the frame is fixed with water tank, the tail of the water tank is fixedly installed with display screen, the bottom of the frame is fixedly connected with scissor frame, the frame and the scissor frame are fixedly connected with first electric push rod, the frame is driven connection with spray pipe between the scissor frame, the spray pipe includes main spray pipe and vice spray pipe, the bottom of the scissor frame is fixedly connected with main spray pipe, the both ends of the main spray pipe are hingedly connected with vice spray pipe, the main spray pipe is communicated with the vice spray pipe, the second electric push rod is fixedly connected between the vice spray pipe.The present application not only solves the problem that the working distance is not easy to control in the prior art when water spraying truck works, leading to often spraying to half without water, or after spraying work is completed, there is still a lot of water in water tank, but also can increase spraying area, improve work efficiency.