69results about How to "Guaranteed water demand" patented technology

The invention discloses an optimal control device and an optimal control method for a primary pump variable flow system. The device comprises a refrigerator, a water pump, air conditioning cabinets, a water pump controller and a pressure difference optimal setting device, wherein the refrigerator, the water pump and the air conditioning cabinets are arranged on a water supply main pipe and a water return main pipe; the pressure difference optimal setting device is electrically connected with the water pump controller, control regulating valves and a pressure difference sensor respectively; and the water pump controller is electrically connected with a frequency converter, a flow sensor, a bypass regulating valve and the control regulating valves respectively. The optimal control method comprises the following steps that: the pressure difference optimal setting device detects valve position feedback signals; the maximum feedback signal is selected, and a valve position reaches or approaches the maximum opening; the water pump controller maintains the pressure difference between the water supply main pipe and the water return main pipe at a set value; and the bypass regulating valve is controlled to ensure that the flow of the refrigerator is not lower than the minimum flow allowed by the refrigerator. The device and the method have the advantages that the safe operation of a water system is ensured, and the requirement of each tail end air conditioning cabinet on water flow is met; and the device and the method can be widely applied to the fields of building energy conservation and air conditioning control of airports, stations, wharves and the like.

The invention discloses an air energy water heater and a heating control method and device thereof. The method comprises the following steps that the outdoor environment temperature of each time point in the future preset time period is calculated; the heating time period corresponding to the optimal heating energy efficiency value of the air energy water heater is calculated; the water usage amount of a user in the future preset time period is predicted; the set temperature is adjusted according to the water usage amount of the user in the future preset time period; and heating control is conducted on the air energy water heater according to the set temperature at the heating time period corresponding to the optimal heating energy efficiency value, and heating control is conducted over the air energy water heater according to the adjusted set temperature at the water utilization time period. By means of the method, the water utilizing habit of the user can be intelligently analyzed, and therefore the air energy water heater can be controlled to conduct heating in advance at the time period with the highest energy efficiency, and heat losses of the idle time period are reduced; and the heating temperature of the air energy water heater can be intelligently adjusted according to the water usage amount of the user, energy is saved, and meanwhile the water utilizing requirement of the user can be guaranteed.

The invention provides a compound modified cement concrete internal-maintenance material and a preparation method thereof. The maintenance material is prepared by compounding inorganic hydrotalcite-like compounds with organic high water-absorbent resin through an intercalation modification technique. The material preparation by virtue of the preparation method has excellent water retention capacity, the shrinkage of concrete is reduced to a great extent, the compressive strengths in the days 7 and 28 are increased by above 10%, the relatively dynamic elasticity modulus after 300 freezing and thawing cycles is above 80%, the anti-freezing property is obviously improvided, and the chloride penetration resistance and sulfate corrosion resistance are remarkably improved.

The invention provides a high-performance concrete inner curing material realizing sustained and controlled release of water and a preparation method of the inner curing material. The inner curing material comprises the following raw materials: sodium alginate, xanthan gum, hydrated lime, sodium acetate, sodium acrylate, 2-acrylamide-2-methylpropanesulfonic acid, a cross-linking agent and an initiator, and also includes an organically modified metakaolin-diatomite-graphene oxide compound, wherein the organically modified metakaolin-diatomite-graphene oxide compound includes the following materials: metakaolin, diatomite, graphene oxide and a silane coupling agent. The inner curing material of the invention can significantly improve the compressive strength of concrete, and the 28-day compressive strength of concrete is 120% or more of the benchmark concrete strength. The 60-min concrete fluidity is significantly improved. In addition, the self-shrinkage of concrete can also be greatlyreduced. The inner curing material of the invention effectively solves the problems that the water release rate of a current inner curing material is difficult to control and the strength of concreteis reduced.

The invention discloses a method for planting macadamia tree in rocky desertification soil. The method is that concave pits in rock, naturally formed in a rocky desertification region are expanded to form grooves not less than 80*80*60cm; gaps in the grooves are filled with mixed clay; 20 to 30cm mixed clay is paved at the bottom parts of the grooves to form a planting layer; macadamia grafting seedlings are subjected to field planting in the grooves; semicircular water stopping grooves are built in the lower sides of the grooves in the downward direction of the slope of the rocky desertification soil, so that the grooves form a water storing mechanism; water storing grooves are formed close to the grooves; at least one of the ends of the water stopping grooves extends to water inlets of the water storing grooves, and thus excessive water in the grooves can be guided into the water storing grooves; the mixed clay is prepared by mixing the following components in parts by weight: 30 to 50 parts of bottom mud of a fish pond, 50 to 80 parts of humic acid soil, 10 to 20 parts of fly ash, and 10 to 15 parts of attapulgite clay.

The invention discloses a method for restoring degraded grassland ecosystem by establishing Leymus chinensis and belongs to the field of ecological remediation. The method includes digging a round pitin an establishment site, taking 80-90% of excavated soil, adding slow-release urea, diammonium phosphate and decomposed animal waste, mixing well, and backfilling the round pit; covering the round pit with perforated degradable agricultural film, and planting pre-germinated seeds of Leymus chinensis in soil at perforated parts. The method helps prevent the problems that, for instance, shortage of moisture and nutrients causes low germination rate of Leymus chinensis seeds and low survival rate of seedlings; the method is applicable to the grassland ecosystems degraded, desertified and salinized due to various causes, and allows clonal propagation advantages of Leymus chinensis to be fully utilized so as to arrive at restoring a stretch of land by cultivating of a spot.

The invention relates to a construction site water recovery and recycling system comprehensive purification tank. The inside part of the purification tank is divided into a sedimentation tank, an oil separation tank and a water storage tank with separation walls. The sedimentation tank, the oil separation tank and the water storage tank are communicated through overflow holes. The overflow hole communicating the sedimentation tank and the oil separation tan is arranged on the upper part of the separation wall. The overflow hole communicating the oil separation tank and the water storage tank is arranged on the upper part of the separation wall. A middle separation wall is arranged in the oil separation tank. An overflow hole is arranged at the middle-lower part of the middle separation wall. An emptying pipe is arranged in the purification tank. The emptying pipe is connected with an underground drainage pipe. The sedimentation tank, the oil separation tank and the water storage tank are respectively provided with water discharge ports on the emptying pipe. The sedimentation tank communicates with a drainage port of a rainwater site wastewater ditch. A municipal water supplement pipe and a water suction pipe extending to the bottom of the water storage tank are arranged in the water storage tank. The water suction pipe is connected with a high-pressure water pump. The purification tank has the advantages of simple structure, reasonable design, and good water purification effect. The purification tank is energy-saving and environment-friendly. With the purification tank, construction site water can be purified and recycled, such that a problem of construction site water wasting is solved.

The invention relates to the field of seawater desalination, and especially relates to a seawater desalination dual water supply system in water-electricity cogeneration. The invention mainly solves the technical problems that in the prior art, indexes for water quality required by municipal water are greatly different from those of industrial water in power plants; common desalinators are lack of professional operation and maintenance personnel; the operation cost for the desalinators is high; the cost of desalted water is higher than that of seawater desalination facilities in power plants. The system of the invention comprises a seawater pretreatment system (1), and is characterized in that the seawater pretreatment system (1) is orderly connected with a reverse osmosis seawater desalination system (2) and a fresh water tank (3) through pipelines; the fresh water tank is respectively connected with an industrial water pool (4), a secondary reverse osmosis and desalting system (5), and a mineralization sterilization system (6) through pipelines; the secondary reverse osmosis and desalting system and the mineralization sterilization system are respectively connected with a desalting water tank (7) and a municipal water pool (8) through pipelines.

The invention relates to the field of water storage heaters and discloses a solar gas composite energy water heating system. The system comprises a solar heater, a gas water heater, a water tank, a central hot water circulating circuit and a control system and is characterized in that the water tank comprises a constant temperature tank and a heat storage tank, wherein the constant temperature tank is directly connected with the central hot water circulating circuit, and the heat storage tank forms a solar circulating circuit with the solar heater. A first water outlet in the upper end of the constant temperature tank is connected with a water inlet of the gas water heater, and a first water inlet in the upper end of the constant temperature tank is connected with a water inlet of the gas water heater to form a heating and circulating circuit. A water outlet of the heat storage tank is connected with a second water inlet in the lower end of the constant temperature tank and a water inlet of the gas water heater. Compared with the prior art, the solar gas composite energy water heating system has the advantages that the solar utilization rate is high, the heating rate is high, and continuous large flow constant temperature water supplying capacity can be obtained through little heat output of a gas heating device. The invention further provides a control method based on the water heating system.

A water sprinkling method for the central greenbelt of expressway features that the water supplying trunk connected to high-pressure water source is segmentally laid underground, the branch tubes are connected to said trunk at intervals, and the sprayer is installed to the top of each branch tube.

The invention discloses an integrated outdoor intelligent stable network pressure-superposed water supply device. The integrated outdoor intelligent stable network pressure-superposed water supply device comprises a cabinet body, a water tank, a main water inlet pipe, a water outlet pipe, a pressure and flow stabilizing unit, a main water outlet pipe, a water supply platform and a control table; the cabinet body is used for providing a stable operation environment for the device; the water tank is used for providing temporary water when water supply of a municipal pipe network is insufficientand located on one side in the cabinet body; the main water inlet pipe is used for being connected with the municipal pipe network to provide water and connected with the water tank; the water outletpipe is used for conveying water in the water tank and connected with the water tank; the pressure and flow stabilizing unit is used for achieving the pressure and flow stabilizing function of user water and connected with the water outlet pipe; the main water outlet pipe is used for directly providing water for users and connected with a flow stabilizing compensation tank; the water supply platform is used for conducting message reminding on water users and device maintenance personnel; and the control table is used for controlling the device to operate. According to the integrated outdoor intelligent stable network pressure-superposed water supply device, the problems that existing pipe network pressure-superposed water supply equipment cannot meet the water use requirement of a user within a period of time of water cut-off, and when serious water leakage occurs to the water supply equipment, the user cannot be reminded in time, and the maintenance process cannot be transparentized are solved.

The invention provides a waterproof and heat-insulation structure of a planting top plate. The waterproof and heat-insulation structure sequentially comprises a waterproof steel reinforced concrete top plate, a second cement mortar leveling layer, a common waterproof layer, a heat-insulation layer, a first cement mortar leveling layer, a root resistance coiled material waterproof layer, an isolation layer, a C20 fine stone concrete protection layer, a concave-convex water drainage plate or water storage plate, a filtering layer, planting soil and a vegetation layer from bottom to top, wherein the root resistance coiled material waterproof layer is a root resistance coiled material; and the common waterproof layer is one out of a high-grade composite D-type self-adhered waterproof coiled material with the thickness of not smaller than 2.0mm, a double-layered high density polyethylene laminated composite self-adhered waterproof coiled material with the thickness which is not smaller than 1.5mm and a composite macromolecular self-adhered waterproof coiled material with the thickness of smaller than 1.5mm. With the adoption of the structure provided by the invention, the waterproof effect is guaranteed and the service life is prolonged; the heat-insulation effect is good and water does not leak; and the construction period is greatly shortened and the structure is suitable for the growth of vegetation.

The invention provides an enhanced concrete internal curing high-water-absorption microsphere material and a preparation method thereof. The enhanced concrete internal curing high-water-absorption microsphere material is prepared from the following raw materials: nano silicon dioxide, chitosan, glutaraldehyde, Arabic gum, methacrylic acid, glacial acetic acid, cumene hydroperoxide, ferrous chloride and sodium ethoxide. By improving the transition area of the cement paste and the aggregate and modifying the microstructure in the cement-based material, the porosity is reduced, and the mechanicalproperty is improved. The whole preparation process flow is relatively simple, professional technicians do not need to operate and guide, and only the operation is carried out according to the description of the invention. The strength, durability, service life and the like of cement concrete are obviously improved by the reinforced concrete internal curing high-water-absorption microsphere prepared by the method disclosed by the invention.

The invention provides a solar water heating device and a control method thereof. The solar water heating device comprises the following components, namely, a heat collecting module, a heat supply module and a controller, the heat collecting module comprises a solar heat collector with a heat collecting water outlet and a heat collecting water inlet, a heating water tank and an air source heat pump, the heat supply module comprises a heat supply water tank and a heat supply water pipe, the controller is connected with the heat collecting module and the heat supply module, the solar heat collector communicates with the heating water tank and the heat supply water tank through a first heat collecting upper circulating pipe, a second heat collecting upper circulating pipe, a first heat collecting lower circulating pipe and a second heat collecting lower circulating pipe correspondingly, the bottom of the heating water tank communicates with the bottom of the heat supply water tank througha second water mixing pipe, the top of the heating water tank communicates with the top of the heat supply water tank through a first water mixing pipe, the bottom of the heating water tank communicates with the heat supply water pipe through a water return pipe communicating with a first cold water supplementing pipe, a water inlet pipe of the air source heat pump communicates with the bottom ofthe heating water tank. The provided solar water heating device can effectively improve the energy utilization rate and prevent overheating.

The invention discloses a marine water pump test device. The marine water pump test device includes a motor, a torque meter, a transmission box, a first mounting seat, a sliding seat and a rigid waterinlet pipe; the first mounting seat is detachably connected with a mounting plate, and a first mounting hole corresponding to a water pump to be tested is formed in the mounting plate; the motor, thetorque meter and the transmission box are connected in a transmission mode in sequence, and an output gear of the transmission box is connected to a transmission gear of the water pump to be tested in a transmission mode; and the rigid water inlet pipe slides axially along a center hole of the sliding seat, and a first flange corresponding to a water inlet of the water pump to be tested and a second flange connected with a soft water inlet pipe are separately fixed to two ends of the rigid water inlet pipe. The marine water pump test device has good versatility, is suitable for the test of different types of marine pumps, is convenient to operate, improves test efficiency and reduces the cost.

The invention discloses a building hotel household centralized purification and energy-saving water supply system. The system comprises a water supply end, a primary filtering end, a pressurizing end,a core filtering end, a recovery end, an automatic control end, a water use end and a cleaning end; and the water supply end is connected with the primary filtering end, the primary filtering end isconnected with the pressurizing end, the automatic control end is electrically connected with the primary filtering end and the pressurizing end, the pressurizing end is connected with the core filtering end, and the core filtering end is connected with the water end, the recovery end and the cleaning end. According to the system, building water supplying is effectively stable, the situation thatpeople cannot normally use a water source is reduced, and the water supply facility is perfect; meanwhile, the water source is purified and saved, the waste of water resources is reduced, the proportion of the purified direct drinking water to the concentrated water is two to one, the water production efficiency is greatly improved, the concentrated water is fully utilized, the situation that concentrated water flows directly into a sewer is avoided, waste is reduced, and resources are saved.

The invention discloses a solar power generation integrated roof for a green building, and relates to the technical field of green buildings. The solar power generation integrated roof for the green building comprises a green building body, an adjusting mechanism, a cleaning mechanism and an irrigation mechanism are arranged above the green building body, and a water storage tank is fixedly mounted at the top of the green building body. According to the solar power generation integrated roof for the green building, through cooperative use of a mounting transverse plate, a mounting plate, a limiting groove, a moving block, a brush, a threaded rod, a first umbrella-shaped gear, a motor, a rotating shaft and a second umbrella-shaped gear, a solar panel is brushed, the solar panel is prevented from being used for a long time, so that dust and bird feces are prevented from being accumulated on the surface of the solar panel, the using effect of the solar panel is prevented from being affected, and the light energy absorbing effect of the solar panel is guaranteed; and meanwhile, the solar panel can be conveniently brushed, practicability is high, and application and popularization are facilitated.

A multi-stage pressure-reduction water valve consists of a floater (1), a water inlet valve seat and a water saving valve body (16), wherein the water saving valve body (16) is in a structure provided with a water storage cavity inside and an opening on the lower portion, the floater (1) is disposed on the upper portion of the cavity inside the water saving valve body (16), and the water inlet valve seat is specifically composed of an upper water inlet valve seat (2), a lower water inlet valve seat (14) and a water inlet valve spool seat (3). The upper water inlet valve seat (2) and the lower water inlet valve seat (14) are disposed on the lower portion of the cavity inside the water saving valve body (16) in a fixedly connected manner and jointly enclose the inside to form an inner water inlet valve cavity (20). The multi-stage pressure-reduction water saving valve is reasonable in design, novel in structure, convenient to use and fine in water saving effect, has expectable higher economical value and social value and is easy to popularize and apply.

The invention relates to an intelligent drip irrigation system for nursery stock planting. The intelligent drip irrigation system comprises a mixing tank (16), wherein a plastic water tower (12) and afiltering system are connected with the mixing tank (16), the other end of the filtering system is connected with a water pump (8), the mixing tank (16) is connected with a main water pipe (2), the main water pipe (2) is provided with multiple water branch pipes (3), the water branch pipes (3) are provided with multiple pressure compensating water droppers (5), each of the pressure compensating water droppers (5) is connected with an arrow-shaped water dropper (7) through at least two capillary pipes (7) in a root control container, and the arrow-shaped water droppers (7) are symmetrically arranged at the root portion of each nursery stock. The intelligent drip irrigation system for nursery stock planting has the advantages of achieving automatic water supply, quantitatively irrigating roots regularly, making moisture at roots uniform and automatically applying biogas slurry, can ensure the water demand of nursery stocks in growth, can also prevent salt in nursery stock cultivation media in the root control containers from precipitating and promote quick growth of nursery stocks.

The invention discloses a seed cultivation device for agricultural planting. The seed cultivation device for agricultural planting comprises a shell; the part below the internal part of the shell is fixedly connected with a horizontal partition plate; the part below the horizontal partition plate is fixedly connected with elastic telescopic rods in a bilaterally symmetrical mode; the lower end ofeach elastic telescopic rod penetrates through the shell and is connected with a horizontal fixed plate; the part below the horizontal partition plate is fixedly connected with longitudinal partitionplates in a bilaterally symmetrical mode; a storage cavity is formed between the longitudinal partition plates; the front side of the storage cavity is rotatably connected with a storage box cover; the right side of the shell is fixedly connected with a motor base; the part above the motor is fixedly connected with a motor; and the output end of the motor is fixedly connected with a horizontal rotating shaft. Compared with the prior art, the seed cultivation device for agricultural planting has the following beneficial effects: the seed cultivation device for agricultural planting is simple instructure and convenient to use, can adjust according to the water demand of seeds at different time during use and completely guarantees the water demand of the seeds so as to guarantee the germination rate of the seeds and avoid waste of the seeds; meanwhile, the seed cultivation device for agricultural planting can store the seeds conveniently and is worthy of popularization.

The invention discloses a water-retaining moisture-preserving cultivation method of edible fungi. The method of the invention comprises, for water retaining and moisture preserving, first, selecting asuitable amount of a cultivation material according to the type of an edible fungus, loading the cultivation material and the edible fungus in a fungal bag through a bagging machine, selecting a drill bit to make a plurality of through holes in the outer surface of the fungal bag, placing the fungal bag on a processing table, selecting absorbing cotton, namely selecting matching absorbing cottonaccording to the diameter and length of the fungal bag, cutting the absorbing cotton, covering the fungal bag with the absorbing cotton, and pasting with glue. After a water solution is adsorbed gradually by the absorbing cotton and is the transferred to the fungal bag via the absorbing cotton; after the water is squeezed, the water is absorbed to the residue via through holes in the fungal bag sothat sufficient water is kept in the fungal bag to allow normal growth for the edible fungus; the water solution is supplied continuously into the fungal bag under the action of the absorbing cotton,the fungal bag is not soaked directly in the water, and therefore, the problem that the fungal bag which is too moist causes growth of bacteria is solved.

The invention relates to the technical field of solar energy, and discloses a greenhouse energy-saving water spraying device based on solar power generation. The device comprises a shell, a supportingplate is fixedly connected to the interior of the shell, a screw rod is movably connected to the exterior of the supporting plate, a push rod is movably connected to the exterior of the screw rod, and a photovoltaic panel is movably connected to the exterior of the push rod. The interior of the photovoltaic panel is fixedly connected with a photosensitive assembly, the interior of the shell is fixedly connected with a storage battery, the exterior of the supporting plate is fixedly connected with a fluorescent lamp, under the interaction of all structures of the device, flowers can be wateredin time through a water spraying rod when the sun rises, according to different angles of the sun, the angle of the photovoltaic panel is adjusted in time, so that the photovoltaic panel can be in contact with sunlight in the maximum area, the water content in the air can be monitored in real time after irrigation is started, flower irrigation is stopped in time when the water content reaches a certain degree, and the device conforms to the energy-saving manufacturing concept.

The invention discloses a photoelectric complementary solar water heater, which comprises a support, a heat collector tube, a water tank, a temperature controller and a tap water port. The heat collector tube used for realizing solar and thermal conversion is arranged on the support, a heat exchange tube is arranged in the water tank, the tap water port is communicated with a water inlet of the heat exchange tube by a first branch tube, communicated with the water tank by a second branch tube and joined with an output pipeline of a water outlet of the heat exchange tube by a third branch tube, a quick heater with a built-in electric heating element is connected with the joined pipeline, an outlet of the quick heater is connected with a shower, a temperature sensor is disposed on the joined pipeline, a first electromagnetic valve corresponding to the temperature sensor is arranged on the third branch tube, and the temperature controller controls opening and closing of the first electromagnetic valve according to water temperature signals of the temperature sensor. The photoelectric complementary solar water heater has the advantages of constant water temperature, sufficient water pressure and fresh water.

The invention provides an urban water supply pipe network operation evaluation method based on prediction, and relates to the field of urban water supply prediction. The method comprises the following steps: firstly, proposing a mixed water demand prediction model fusing multiple correction mechanisms, and predicting the total water demand of residents in the next day in a water supply area; then providing a sequence-to-sequence based coding and decoding network structure, and performing minute-level prediction on the water pressure of each node of the pipe network; and proposing a pressure dynamic threshold value of a pipe network pressure measuring point based on prediction information, holiday and festival information and the like. By means of the method, accurate evaluation of the overall operation state of the urban water supply pipe network is achieved, and scheduling guidance is provided for water volume allocation of the urban water supply system.

The invention relates to a self-water-absorbing ceramic liner, which comprises the following components in parts by weight: 63.85-70.08 parts of silicon dioxide, 13.98-19.98 parts of aluminum oxide, 0.13-0.62 part of iron oxide, 0.21-2.42 parts of magnesium oxide, 0.36-5.71 parts of calcium oxide, 0.03-0.13 part of titanium oxide, 3.44-4.52 parts of potassium oxide, 0.75-1.16 parts of sodium oxide and 4.03-9.73 parts of loss on ignition, wherein the sum of all the components is 100 parts. According to the invention, a flowerpot liner having a certain water absorption is fired from specific pottery clay; the water absorption distribution of each part of the liner is very even so that the soil moisture content can be kept even; a housing for matching with the ceramic liner can be made of any material and also can be replaced optionally; the liner is capable of meeting the water demand of various plants for 10-70 days after being added with water at a time, and is convenient to use.

The invention relates to a portable tray, which belongs to the field of municipal greening engineering and comprises a water storage tank with an opening in the top end and a placing tray covering the opening in the top end of the water storage tank. A drainage hole is formed in the side wall of the water storage tank, and a distance is reserved between the drainage hole and the inner bottom end of the water storage tank; a plurality of placing slots for placing flowers are formed in the tray surface of the placing tray, and the placing slots are communicated with the interior of the water storage tank through a communication structure; a water absorption and drainage piece is arranged between the interior of the water storage tank and the placement groove position, and water stored in the water storage tank is drained into the placement groove position through the water absorption and drainage piece. The flower planting device has the effect of ensuring the water demand of flowers placed on the square in the placing period.

The invention discloses a novel prestressed duct grouting material and a preparation method thereof. The novel prestressed duct grouting material is prepared from the following components in parts by weight: 62 to 68 parts of cement, 10 to 15 parts of phosphorus slag powder, 4 to 8 parts of rock debris, 2 to 3.5 parts of coal gangue powder, 5 to 6.5 parts of porous silica fume, 1 to 1.5 parts of macromolecular water-absorbent resin, 0.1 to 0.4 part of corrosion inhibitor, 0.2 to 0.4 part of modified polyvinyl alcohol fiber, 2 to 4 parts of water reducing agent and 0.1 to 1 part of defoaming agent. According to the prestressed duct grouting material prepared by the invention, the recycling of solid wastes is realized, the pollution of the wastes to the environment is reduced, the problems of large shrinkage and low early strength of the grouting material after coagulation are effectively solved, and the aims of improving the safety, mechanical property and durability of the structure are fulfilled.