35results about How to "Control water pressure" patented technology

The invention provides a bait casting machine for cage culture, wherein the machine is equipped with a diesel engine or petrol engine water pump, which is connected with a triple valve, one path of the triple valve is connected with the bait bin through a flushing control valve and flushing pipes, the bait bin is in communication with the mixing chamber through the blanking tube, the blanking tube is equipped with a blanking control valve on the outside, the other path is connected with a bait throwing flexible pipe through the mixing chamber, the one end of which is equipped with a blow head, one end of the angle controller is connected with the outer wall of the bait bin, the other end is connected with the bait throwing flexible pipe. The invention solves the problem of absent power supply of the deep water net cages.

The invention discloses a variable water head permeability coefficient measurement system and measurement method, relates to the technical field of rock seepage experiments, solves the technical problem of long permeation experiment time consumption, and eliminates the influence of temperature and pressure changes on the permeability coefficient measurement; the system comprises a liquid storage system, a test system, a control system and a data processing system; the liquid storage system comprises a water storage barrel, a sealing cover and an adapter box, wherein a water injection port andan air inlet are formed in the sealing cover; the test system comprises a test bed, a water guide pipe and a test cylinder; the water guide pipe is connected with the test cylinder; the control systemcomprises an automatic control valve, a heating rod, an air inlet pipe, a high-pressure air tank and a pressure reducing valve; the automatic control valve is connected with the adapter box; the high-pressure air tank is communicated with the air inlet; and the data processing system comprises a signal acquisition instrument and a computer, and a method for determining the permeability coefficient through an instantaneous Darcy law and the system. The system and the method have the beneficial effects that the automation degree is high, the test period is shortened, the measurement accuracy isimproved, and the like.

The invention provides a green crab aquaculture system, which belongs to the technical field of aquaculture, and solves the technical problems of low survival rate of green crabs and the like of the existing green crab aquaculture system. The green crab aquaculture system comprises a seawater purification device, a seawater heating device and a sewage treatment unit, wherein the seawater purification device is communicated with the seawater heating device, the aquaculture system further comprises a box bracket, a plurality of aquaculture boxes which can accommodate at least one green crab are arranged on the box bracket, water inlets and water outlets are arranged on the aquaculture boxes, the water inlets are connected with the seawater heating device through water inlet pipelines, the water outlets are communicated with the sewage treatment unit through drainage pipelines, and crab taking ports are arranged on the aquaculture boxes. The invention has the advantages of high survival rate of the green crabs, high aquaculture efficiency, high utilization rate of aquaculture facilities, obvious aquaculture benefit, convenience in monitoring and the like.

The invention discloses an aquatic washing machine for aquaculture net cages. The aquatic netting washing machine includes floating bodies on the two sides of a net cage frame, wherein the floating bodies are provided with cleaning mechanisms for cleaning netting and driving mechanisms for driving the cleaning mechanisms to run; the cleaning mechanisms include casings, rollers and mounting shafts;hard bristles for cleaning the netting are arranged on the rollers; the rollers are rotatably arranged in the casings and driven to rotate by the mounting shafts; the surface of the netting is cleaned when the rollers rotate; the driving mechanisms include hydraulic motors, hydraulic conveying rods and plunger pumps; the hydraulic motors are connected with the mounting shafts and drive the mounting shafts to rotate; the hydraulic motors are connected with the plunger pumps through the hydraulic conveying rods; the plunger pumps supply water through the hydraulic conveying rods and drive the hydraulic motors to rotate; the upper ends of the casings are also provided with water tanks communicating with the hydraulic conveying rods; and a plurality of first high-pressure nozzles are arrangedon the water tanks at intervals. According to the aquatic netting washing machine for the aquaculture net cages and awashing method, aquatic washing can be carried out while the netting is put away,and the washing efficiency is high.

The invention discloses a drill-hole high-pressure water pump-in test loading system which comprises a test cavity and a water reservoir. The test cavity is formed in a test observation hole and is communicated with the water reservoir through a water inlet pipe, a high-pressure water pump unit is mounted on the water inlet pipe, and a water return pipe is communicated between the test cavity and the high-pressure water pump unit and provided with a pressure gauge. In the drill-hole high-pressure water pump-in test loading system, pipeline connection way is modified, the water return pipe is added to be assembled into double-pipeline connection way together with the water inlet pipe. Water pressure value of the test cavity is controlled by regulating pressure of the water return pipe and is free of affection from water flow state of the water inlet pipe when water pressure of the test cavity is tested by being connected with a pressure sensor, and head loss of pipelines is low; test value is smaller than practical pressure and is safer for drill-hole high-pressure water pump-in test reaching certain set pressure value.

The invention discloses an agricultural water-saving drip irrigation system, which comprises a supporting table, a water tank, a water pump and a fertilizer application tank; the top of the supportingtable is fixedly connected with the bottom of the water tank; the top of the water tank is fixedly connected with a mounting block; and the top of the mounting block is fixedly connected with the bottom of the water pump. The invention relates to the technical field of drip irrigation systems. According to the agricultural water-saving drip irrigation system, by communicating a water outlet pipeto a water outlet of the water pump and communicating a water inlet joint to one end of the water outlet pipe, the drip irrigation system integrating water drip irrigation and fertilizer drip irrigation can be realized, the cost of the agricultural drip irrigation system is lowered, and the practicability is stronger; a clamping groove is formed in the inner wall of a drip irrigation branch pipe,a flow stabilization sheet is connected to the interior of the clamping groove in a clamping manner, the flow stabilization sheet comprises a bottom sheet, an arch-shaped conical surface is fixedly connected to the top of the bottom sheet, and a water outlet is formed in the surface of the arch-shaped conical surface, so that control on water flow can be effectively realized, and in addition, thestability of a water outlet rate of a dripper can be ensured.

The invention discloses a multifunctional fire-fighting lance device. The device comprises a lance main body, a lance head and a connecting ring. The lance head is arranged inside the front end of thelance main body in a threaded connection mode. The connecting ring is in threaded connection with the outer surface of the tail end of the lance main body. An inner ring is arranged on the inner sideof the water inlet end of the lance head. A plug corresponding to the inner ring is arranged inside the lance main body. The rear end of the plug is fixedly connected with a push rod. When the fire-fighting lance device is used, moving of the push rod is controlled by controlling input current of an electromagnet, accordingly, the size of the gap between the plug and the inner ring is adjusted, the water pressure is controlled, and accordingly, application requirements are met; and by arranging an atomization ring on a fire-fighting lance, a small amount of water enters the atomization ring when the water lance is used, fire-fighting personnel can be cooled through inside atomization nozzles, and the situation that close-range fire extinguishing is performed for a long time, burns are caused, and the life safety of firemen is harmed is avoided.

The invention relates to an energy storage and flow increasing device for air energy heating and cooling projects, and relates to the field of air energy cooling and heating projects, in particular tothe technical field of energy storage and flow increasing devices for the air energy cooling and heating projects. The main technical problem to be solved is that when air energy heating and coolingequipment is connected to an indoor fan, floor heating or finned radiators, pipes often need to exhaust air, working conditions such as insufficient water flow, temperature difference protection, highpressure protection and temperature deviation protection often happen, the working effect is poor, a compressor is started frequently, and energy is wasted. In order to solve the problem, it is necessary to invent the energy storage and flow increasing device for the air energy heating and cooling projects. A main method to solve the problem is that an intelligent electric water supply valve effectively controls the water pressure in an expansion water tank, air in a waterway system is exhausted through an exhaust valve, a balanced rectifier valve controls the water flow to be uniform and stable, and the insufficient water flow and starting of temperature difference protection, high pressure protection and temperature deviation protection and the like due to often exhausting and unstablewater flow of the system are effectively avoided; and through the energy storage effect of the amount of water stored in the expansion tank, the water flow is increased, and the equipment working efficiency is improved.

The invention discloses automatic water pressure adjusting cleaning equipment with a high-pressure spray head and a cleaning method thereof, relates to the technical field of cleaning equipment, and aims to solve the problem of how to improve the cleaning effect of the cleaning equipment on a workshop environment and mechanical equipment on the premise of reasonably controlling the flow in the prior art. A water storage tank is arranged on one side in the base, a pressurizing water pump is fixedly installed at the upper end of the other side in the base, a controller is installed at the lower end of the other side in the base, a water pumping pipe is installed at one end of the pressurizing water pump, and a water inlet pipe is installed at the other end of the pressurizing water pump. A water pressure control device is installed at one end of the water inlet pipe, a buffer plate is arranged on one side in the water pressure control device, a water pressure adjusting plate is arranged on one side of the fixing plate, a water spraying pipe is installed at one end of the water pressure control device in a sealed mode, and a water spraying gun is installed at one end of the water spraying pipe. And a high-pressure spray head is hermetically mounted at the front end of the water spray gun.

The invention relates to a double-vortex drainage type water pool floating object clearing device based on cloud diagram. The clearing device comprises a first water pumping pipe, a second water pumping pipe, a first water pump machine, a second water pump machine, a net cover, a first controller, a second controller and controllable visual monitors, wherein a water inlet of the first water pumping pipe and a water inlet of the second water pumping pipe formed in the bottom of a water pool and are formed upwards, propellers and filter screens are arranged at the water inlet of the first waterpumping pipe and the water inlet of the second water pumping pipe from top to bottom, a water outlet of the first water pumping pipe communicates with the water inlet of the first water pump machine,a water outlet of the second water pumping pipe communicates with the water inlet of the second water pump machine, water guns are connected to a water outlet of the first water pump machine and a water outlet of the second water pump machine, the water guns and the net cover are arranged on the circumferential wall of the water pool, and the controllable visual monitors are arranged on the periphery of the water pool and are connected to the input end of the first controller and the input end of the second controller. The clearing device has the advantages that automatic clearing of the waterpool can be realized, the efficiency is high, the clearing effect is good.

The invention discloses a pavement maintenance vehicle. The pavement maintenance vehicle comprises a chassis, a water way system and a hydraulic system, wherein the chassis comprises an engine used for driving the vehicle to travel, the water way system involves a water pump, the hydraulic system involves a hydraulic pump, a water pump motor and a control valve set, the hydraulic pump is in driving connection with the engine, the water pump motor is in driving connection with the water pump, the control valve set is arranged between the hydraulic pump and the water pump motor, and oil liquid output by the hydraulic pump flows to the water pump motor through the control valve set to control a rotating speed of the water pump motor for controlling the water spraying amount of the water pump.According to the pavement maintenance vehicle, the water pump motor is driven to operate through the engine of the chassis, compared with the prior art, an engine which is specially used for drivingthe water pump motor to operate is omitted, so that the size of a clear water tank can be increased as the mounting space is expanded, the total water spraying amount of the whole pavement maintenancevehicle is increased, and the performance parameters of the whole pavement maintenance vehicle are improved.

The invention discloses a method and a device for a water-impact-resistant test on a building element after a fire-resistant test. The method comprises the following steps of: impacting the surface of a high-temperature test piece after the fire-resistant test via a high-pressure water column, controlling the pressure of the water column by a controller, so as to obtain an evaluation of the water-impact-resistant performance of the test piece after the fire-resistant test according to the pressure of the high-pressure water column, the impacting time of the water column, and the states of the test piece after the test. The device comprises a water tank, a water pump, a frequency converter, a PID (proportion integration differentiation) controller, a pressure sensor and a water gun, wherein the water pump is used for pumping water in the water tank to the water gun, the pressure sensor is arranged on a downstream pipeline of the water pump, and the pressure sensor is connected with the PID controller; the PID controller is connected with the frequency converter; and the frequency converter is connected with the water pump. According to the method and the device disclosed by the invention, the water-impact-resistant performance test on the building element after the fire-resistant test is performed, so that the fire safety performance of the building element can be comprehensively evaluated, and the water-impact-resistant performance test is extremely high in theoretical research and practical application value; and moreover, a PID control technology is used for control, so that the test is accurate.

The invention provides an output voltage control method for a booster pump. The method comprises the steps of detecting the operation parameters of the booster pump; adjusting the output voltage of the booster pump according to the operation parameters of the booster pump. The invention further provides an output voltage control device for the booster pump. Because change of the output voltage of the booster pump causes change of the rotation speed of the booster pump and change of the rotation speed of the booster pump causes change of the water output pressure of the booster pump, the water output pressure of the booster pump can be effectively adjusted and can be controlled by adjusting the output voltage of the booster pump.

The invention discloses a multi-port fire-fighting water segregator capable of conveniently controlling the water pressure in the technical field of fire-fighting water segregators. The multi-port fire-fighting water segregator capable of conveniently controlling the water pressure comprises a water segregator body, water segregating pipes are evenly installed at the bottom of the water segregatorbody, an inner pipe and an outer pipe are installed on the top of the water segregator body, and the inner pipe is located in the outer pipe; a cavity is formed between the inner pipe and the outer pipe, and a through hole is formed between the cavity and the water segregator body; the left side and the right side of the inner pipe are each provided with a water inlet; and a magnetic block is slidably arranged in an inner cavity of the inner pipe, a U-shaped block is installed at the bottom of the inner cavity of the inner pipe, an electromagnet is fixedly installed in an inner cavity of theU-shaped block, a metal wire wound on the outer wall of the electromagnet is connected with an external power supply, and the top of the electromagnet is connected with the bottom of the magnetic block through a spring. According to the multi-port fire-fighting water segregator capable of conveniently controlling the water pressure, the water pressure can be controlled through the water flow, useis convenient, water resources are saved, and the practicability is achieved.

The invention discloses a drinking water filter including a hand disc (1); the hand disc (1) is connected with a water mixer (3) through a rotating shaft (2); the water mixer (3) is located in a water tank (8) of a water disc (9); one end of the water disc (9) is provided with a water distribution disc (4); distribution holes (5) are distributed at the circumference of the water distribution disc (4); the water distribution disc (4) and a filter layer (6) are connected; the filter layer (6) is connected with a water filter (7) through a water filtering plate (10); the axial outer side of the water filter (7) is connected with a first filter screen (11) and a pressure net (12); the radial direction of the water filter (7) is connected with a second filter screen (13) and an elastic head (15). A bi-directional filtration way is adopted; in the straight direction, the water flow passes relatively fast due to relatively large applied water pressure; but if the water pressure exceeds a certain limit, the water flow can pass through a near second L-shaped guide tube in a filtration manner; therefore, the water pressure is controlled, moreover, the filter screens are protected, and the water quality of the water filter after long-term use is enhanced.

The invention relates to the technical field of ultrahigh-pressure water supply, in particular to an ultrahigh-pressure pressure stabilizing device suitable for ultrahigh-pressure equipment. The device comprises a hydraulic pump, a control box and a detection pipe. According to the device, the hydraulic pump is arranged, the water supply pressure of the hydraulic pump can be controlled under the control of a frequency converter, the detection pipe is arranged to detect the water pressure of a water supply pipe connected with the single section of the ultrahigh-pressure equipment and transmit information to a controller, and the controller processes the information and transmits the information to a constant-pressure water supply controller. The constant-pressure water supply controller achieves constant-pressure control over the water supply pressure by controlling the frequency converter, water supply can be stopped when the water pressure in the ultrahigh-pressure equipment reaches aset value, energy is saved, meanwhile, equipment damage caused by the too high water pressure is avoided, meanwhile, the accurate water pressure is provided for materials, and the ultrahigh-pressuresterilization effect of the materials is improved.

Disclosed is an online medicinal filter element washing device. A fixed plate is arranged on the side wall of a water tank. A connection part of a filter element barrel is arranged on the fixed plate and connected with a water pump arranged in the water tank through a pipeline. The online medicinal filter element washing device has the advantages that the washing effect is good, and the washing process is easy to control.

The invention discloses an intelligent air source heat pump system which comprises a plurality of air source heat pumps, a hot water tank, a cold water tank, a water-consuming system, a central processing unit, a touch display screen and a hot water tank temperature sensor, wherein the air source heat pumps are connected with the hot water tank through pipelines I; the hot water tank is connected with the cold water tank through a cold-hot water tank connecting pipeline; the water-consuming system is connected with the cold-hot water tank connecting pipeline through a water-consuming pipeline; the hot water tank temperature sensor is arranged in the hot water tank and electrically connected with the central processing unit; the air source heat pumps and the touch display screen are electrically connected with the central processing unit respectively; the intelligent air source heat pump system is further improved in that water level sensors are arranged in the hot water tank and the cold water tank; a water-consuming pipeline temperature sensor is arranged in the water-consuming pipeline; and variable-frequency water supply pumps are arranged in the cold-hot water tank connecting pipeline. The intelligent air source heat pump system is efficient, visual and intelligent, and the working conditions of the air source heat pumps and the water tanks can be known in real time.

The invention relates to a battery production process, and discloses a cast welding process for the ultra-large busbar of a nuclear 1E-grade lead-acid storage battery. The cast welding process comprises the following steps: cast-welding is carried out by adopting a cast-welding machine, and the temperature of a lead pan is set to be 440-470 DEG C and the temperature of a mold core to be 140-160 DEG C in the cast-welding process; a lead pan of the cast-welding machine is heated to 440-470 DEG C; the lead liquid enters a mold cavity; after the mold cavity is filled with the lead liquid, the tabs are inserted into the busbars of the mold, and the tabs are combined with the busbars; when a temperature probe detects that the temperature of the mold core rises to 140-160 DEG C, water enters a cooling water channel for cooling, and cooling is stopped until the temperature of the mold core falls back to 140-160 DEG C; and demolding is carried out. The cast welding process can be suitable for cast welding of a large lead-acid battery, the cooling starting point and the cooling ending point are well controlled through the temperature, the cooling effect of the busbar is controllable, meanwhile, the cooling speed conforms to the shrinkage speed during alloy cooling, and shrinkage cavities are completely eradicated; and the heat for cast welding of each busbar each time can be ensured to be consistent, and the cast welding effect consistency is good.

The invention relates to a battery production process, and discloses a casting and welding process for a super-large busbar of a nuclear 1E-level lead-acid battery, which includes using a casting welding machine to perform casting welding. The core temperature is 140‑160℃; the lead pot of the casting and welding machine is heated to 440‑470℃; the lead liquid enters the mold cavity; after the lead liquid in the mold cavity is filled, the tabs are inserted into the busbars of the mold, and the tabs are connected to the busbars. When the temperature probe detects that the temperature of the mold core rises to 140-160°C, the cooling water channel enters the water for cooling until the temperature of the mold core drops to 140-160°C, and then stops cooling; demoulding. The invention can be applied to the casting and welding of large lead-acid batteries, and the cooling start point and end point of the cooling can be controlled by the temperature, so that the cooling effect of the busbar can be controlled, and the cooling speed can meet the shrinkage speed of the alloy when it is cooled, so as to prevent the occurrence of shrinkage holes; The heat of each busbar is consistent in each casting and welding, and the consistency of casting and welding effect is better.

The invention discloses a machining center built-in flushing gun capable of conveniently adjusting the angle. The machining center built-in flushing gun comprises a base. The bottom of the base is fixedly connected with two bolts which are symmetrical left and right. The bottom of the base is fixedly connected with a connecting rod positioned between the two bolts. According to the machining center built-in flushing gun capable of conveniently adjusting the angle, a screw sliding rail, sliding blocks and connecting holes are arranged so as to play a role that the sliding blocks can slide on the outer surface of the screw sliding rail, so that the left and right positions and the front and rear positions of the sliding blocks are directly changed while sliding, and the positions of water guns are driven to change, so that the flushing angles of the water guns are greatly convenient to adjust, the front and rear positions can be adjusted instead of a single adjustment on the same plane,and the adjustment of the angle is more ideal, so that the flushing of workpieces in the processing process is more thorough, the cooling and lubricating effects are better, the processing quality ofthe workpieces is ensured, and the effect of improving the processing quality is achieved.

The invention relates to a double-vortex drainage type water pool floating object clearing device based on cloud diagram. The clearing device comprises a first water pumping pipe, a second water pumping pipe, a first water pump machine, a second water pump machine, a net cover, a first controller, a second controller and controllable visual monitors, wherein a water inlet of the first water pumping pipe and a water inlet of the second water pumping pipe formed in the bottom of a water pool and are formed upwards, propellers and filter screens are arranged at the water inlet of the first waterpumping pipe and the water inlet of the second water pumping pipe from top to bottom, a water outlet of the first water pumping pipe communicates with the water inlet of the first water pump machine,a water outlet of the second water pumping pipe communicates with the water inlet of the second water pump machine, water guns are connected to a water outlet of the first water pump machine and a water outlet of the second water pump machine, the water guns and the net cover are arranged on the circumferential wall of the water pool, and the controllable visual monitors are arranged on the periphery of the water pool and are connected to the input end of the first controller and the input end of the second controller. The clearing device has the advantages that automatic clearing of the waterpool can be realized, the efficiency is high, the clearing effect is good.

The invention belongs to the field of heat treatment of metal plates and strips, and discloses a water spray system and a control method for the heat treatment of metal plates and strips. The system includes diversion water collector, diversion water supply pipeline, control valve group, and control system. The control method includes water pressure adjustment method and water flow adjustment method. Constant pressure water supply, three control valve group configuration modes are designed according to the variety and specification of metal plate and strip material, production rhythm and heat treatment process, and the double closed-loop control of water pressure and water flow is realized. The invention satisfies the requirement of precise control of the water flow, water pressure and cooling path of the water spray system with multiple varieties, variable specifications, complex heat treatment process and production rhythm, and has fast adjustment speed, good stability, water saving and energy saving, high degree of automation, and realizes High flatness, high uniformity and high efficiency heat treatment of metal plate and strip.

The invention discloses a loading system for drilling high pressure water pressure test. The loading system includes a test chamber and a water reservoir located in the test observation hole; the test chamber and the water reservoir are connected through a water inlet pipe, and a high-pressure water pump group is housed on the water inlet pipe; the connection between the test chamber and the high-pressure water pump group A water return pipe is connected between the water inlet ends, and a pressure gauge is installed on the water return pipe. The invention improves the pipeline connection mode of the drilling high-pressure water test loading system, adds a return water pipe, and forms a double pipeline connection mode with the water inlet pipe. Adjust the pressure at the return pipe to control the water pressure value of the test chamber. When the pressure sensor is connected to test the water pressure of the test chamber, it will not be affected by the flow state of the water inlet pipe, and the loss of the water head in the pipeline is small; It is relatively safe for the drilling high-pressure water test of the design pressure value.

The invention provides a flow regulating and pressure regulating valve, and belongs to the field of valves. The flow regulating and pressure regulating valve comprises a valve body, wherein the valvebody is at least divided into two parts, namely a left valve body and a right valve body; a water inlet is formed in the left side of the left valve body, the left valve body is internally provided with a flow guide cylinder which is integrally connected with the left valve body, and a water flow channel is formed between the flow guide cylinder and the valve body; the right end of the right valvebody is provided with a water outlet, the side wall of the right valve body is provided with a sewage outlet, the sewage outlet is close to the water outlet, a piston is arranged at the water outlet,the piston and the contact surface of the water outlet is tightly attached, and the piston is rotationally connected with a rocker arm through a connecting rod; the rocker arm is connected to a rotating shaft in a sleeving mode, the rotating shaft penetrates through the side wall of the left valve body, the end, extending out the side wall, of the rotating shaft is connected with a driving device, and the rotating shaft drives the piston to linearly move through the driving device. The flow regulating and pressure regulating valve has the advantages that the water flow size is automatically adjusted, the pipeline impact force is reduced, the pipeline pressure is reduced, and the flow regulating and pressure regulating valve is flexible and reliable.

A measurement system and method for a falling head permeability coefficient, relating to the technical field of rock seepage experiments, solving the technical problem of long time consumed by a permeability test, eliminating the impact of temperature and pressure changes on permeability coefficient measurement. The system comprises a liquid storage system (1), a test system (2), a control system (3), and a data processing system (4); the liquid storage system (1) comprises a water storage barrel (11), a sealing cover (12), and an adaption box (13); a water injection opening (121) and an air inlet (122) are provided on the sealing cover (12); the test system (2) comprises a test bench (21), a water guide pipe (22), and a test barrel (23); the water guide pipe (22) is connected to the test barrel (23); the control system (3) comprises an automatic control valve (31), a heating rod (32), an air inlet pipe (34), a high-pressure gas tank (35), and a pressure reducing valve (36); the automatic control valve (31) is connected to the adaption box (13); the high-pressure gas tank (35) is communicated with the air inlet (122); the data processing system (4) comprises a signal acquisition device (41) and a computer (42). Also disclosed is a method for determining a permeability coefficient by means of instantaneous Darcy's law and the system. The present system and method have the beneficial effects of high degree of automation, short test period, and more accurate measurement.

The invention provides a modular intelligent in-situ active purification system for underground water of a uranium tailing pond. The purification system comprises an underground purification unit andan overground control unit, the underground purification unit comprises a plurality of modular purification columns which are perpendicular to the water flow direction and are arranged in the purification area; the overground control unit comprises a plurality of water suction pumps connected with the modular purification columns and an Internet of Things information console connected with the water suction pumps; and the Internet of Things information console regulates and controls the water pressure in the modular purification columns by controlling the operation of the water suction pumps.In this way, the service life of the purification system can be effectively prolonged, and meanwhile the operation cost is greatly reduced; and the operation state of the water suction pump is controlled through the Internet of Things console, intelligent regulation and control over the water pressure in the modular purification column are achieved, then active purification of underground water isachieved so as to adapt to complex underground water conditions, the utilization efficiency of filler is improved, and high practical application value is achieved.

The invention discloses a zero-cold-water pressurization method for a gas water heater, and relates to the technical field of gas water heaters. The method specifically comprises the following steps: S1, starting a preset function of the gas water heater, setting a preheating temperature for preheating, then starting a pressurization function to enter a pressurization standby mode, and starting for ignition until the current water flow is greater than the preset starting water flow; and S2, strating a water pump for pressurization work, recording the pump starting water inlet temperature, and keeping the working power of a pressurizing pump unchanged at the moment. According to the zero-cold-water pressurization method for the gas water heater, a user can use hot water at any time, the timing circulation time can be set according to the environment temperature and the actual condition, the error between the actually-measured water temperature and the set value is further reduced, the user can control the water outlet pressure according to the self condition, the use comfort of the user is improved, the user can conveniently operate according to actual conditions, the overall safety degree is high, and practicability is high.

The invention discloses a heat exchange water pipe heat conduction efficiency detection device. The device comprises a device assembly and a main working cavity arranged in the device assembly, wherein an initial hot water cavity and a terminal hot water cavity are fixedly formed in the top wall of the main working cavity, and a hot water outlet valve is fixedly arranged on the bottom wall of theinitial hot water cavity. According to the device, a cold water inlet, a hot water inlet and a water outlet are respectively arranged, discharged water flows into corresponding cavities, a pressure meter and a pressure control valve are arranged at each water inlet, water pressure in a pipeline can be accurately controlled, and detection errors caused by volume errors of the pipeline are avoided;a temperature difference detection device and a qualified and defective heat exchange pipe classification device are arranged in each cavity, the heat exchange efficiency is judged according to the water temperature difference after heat exchange, and the larger the temperature difference between initial water temperature and final water temperature is, the higher the heat exchange efficiency is;and inductors automatically push those with high heat exchange efficiency to one side and push those with low heat exchange efficiency to the other side, so that the problems of inaccurate manual measurement and simultaneous measurement unavailability are solved, and the detection efficiency is improved.