63 results about "Gravity drainage" patented technology

The invention provides a heavy oil thermal-flow coupling development experimental device and method based on microwave-assisted gravity drainage, and belongs to the field of oil-gas field development. The experimental device comprises a three-dimensional oil reservoir simulation system, a microwave-assisted heating system, a horizontal well injection-production regulation and control system and a multi-field monitoring system; the microwave auxiliary heating system comprises a microwave generation regulation and control system, a microwave transmission system and a shaft integrated microwave radiator, the microwave generation regulation and control system comprises an industrial grade microwave generator, a power regulator and a PLC, and the microwave transmission system comprises a microwave coaxial cable and a microwave waveguide tube bundle; and the microwave generator is continuously connected with the microwave waveguide tube bundle and the shaft integrated microwave radiator. According to the heavy oil thermal-flow coupling development experimental device and method based on microwave-assisted gravity oil drainage, the technical problems that an existing deep heavy oil thermal recovery experimental device cannot reproduce a'thermal-flow-force 'multi-field coupling environment, the microwave heating adaptability is poor, and the experimental scale and the field deviation is large are solved. The heavy oil thermal-flow coupling development experimental device and method based on microwave-assisted gravity oil drainage solve the technical problems that an existing deep heavy oil thermal recovery experimental device cannot reproduce the'thermal-flow-force' multi-field coupling environment.

The invention provides a hydraulic reclamation area storage yard foundation treatment construction method which comprises the steps that a treatment area is divided into a consolidated hydraulic reclamation sand area, a storage sand area and a new hydraulic reclamation sand area according to the formation time and compactness difference of strata, a three-dimensional drainage system is laid in the new hydraulic reclamation sand area and comprises a horizontal permeable gabion wall and a vertical drainage plate, and a gravity drainage channel is formed; the process of forming a drainage channel through vibroflotation and then carrying out dynamic compaction and densification is adopted in a consolidated area, the process of alternately implementing vibroflotation and dynamic compaction is adopted in a sand stockpiling area, the process of carrying out local vibroflotation reinforcement after layered dynamic compaction and pre-pressing is adopted in a new hydraulic reclamation area, and vibroflotation and dynamic compaction construction parameters are dynamically fed back and adjusted by monitoring gravel data. The foundation treatment problem of hydraulic reclamation areas formed in different years is solved.

The invention relates to the technical field of automobile front windshield drainage, in particular to a front windshield lower decorative plate structure and an automobile. The invention provides a front windshield lower decorative plate structure. The front windshield lower decorative plate structure comprises a front windshield lower decorative plate body and a gutter channel system installed on the front windshield lower decorative plate body. The gutter channel system comprises a gutter channel body, a water leakage hole formed in the gutter channel body, a spiral worm arranged in the gutter channel body and a driving motor arranged outside the gutter channel body, and the water leakage hole is located in a terminal point area of a pushing path of the spiral worm; the spiral worm is in transmission connection with the driving motor, and the driving motor is used for driving the spiral worm to rotate. Traditional gravity drainage is upgraded into active mechanical drainage, drainage efficiency and reliability do not depend on the inclination angle of the gutter channel body seriously any more, and meanwhile the spiral worm can push small foreign matter entering along with rainwater to the water leakage holes while pushing water flow.

The utility model discloses a construction ventilation system for a self-flowing drainage tunnel of a pumped storage power station, which structurally mainly comprises an outer tunnel, a fan, a ventilation pipeline and a dust removal piece, and is characterized in that fresh air is conveyed into the tunnel through the fan arranged at a tunnel opening and the ventilation pipeline connected to the fan; and then most of the vitiated air in the tunnel is absorbed and filtered through the dust removal piece, so that the vitiated air in the tunnel and discharged out of the tunnel is reduced, and the pollution of the vitiated air to the environment in the tunnel and outside the tunnel is reduced.

The invention discloses a high-water-content material conveying system and method based on bionic and active separation, and belongs to the technical field of bulk material conveying. A self-adaptive super-smooth interface is constructed through a gradient porous ceramic matrix and electrowetting regulation and control, and the surface characteristics are dynamically regulated and controlled through voltage, so that the self-adaptive super-smooth interface adapts to the adhesion characteristics of different materials; water-solid efficient separation is achieved by combining ultrasonic cavitation and a centrifugal force field, through the active phase separation mechanism of first dissociation and then separation, the traditional mode of single mechanical extrusion or gravity drainage is changed, and the water-solid separation efficiency is improved to 95% from 70% or below; and magnetic suspension driving and piezoelectric energy harvesting are adopted, so that energy consumption is reduced. The system can achieve the breakthrough effects that adhesion tends to zero, separated water is directly recycled, and the power consumption per ton is smaller than 1 kWh, and is suitable for green conveying of industrial sludge, tailings and other scenes.

The invention discloses a reinforcing device and method for a side slope containing a weak intercalated layer, and belongs to the technical field of geotechnical engineering side slope reinforcement. The reinforcing device comprises a retaining wall and anchor cables, supplementary plates are arranged between units and are elastically connected, a water storage assembly is arranged on the side, close to the retaining wall, of the side slope, a water tank is arranged at the top of the retaining wall, and a water absorption assembly extending into the side slope is arranged on the retaining wall. The pushing assembly comprises a connecting cylinder, a connecting ring, an outer ring, a flexible pad and a corrugated pipe; the pump body at the water tank is connected with a hidden drainage header pipe and a water suction pipe through a three-way pipe; the retaining wall units, the pre-stressed anchor cables and the deep drainage system which are modularized are integrated, so that the cooperation of retaining, anchoring and drainage is achieved, and the defect that traditional measures are poor in collaboration is overcome. The water suction assembly is arranged, the pump body actively sucks water, the pore water pressure is efficiently reduced, and the problem that traditional gravity drainage is passive and low in efficiency is solved. The spring supplement plates between the retaining wall units can elastically adapt to uneven deformation of the side slope, stress redistribution is achieved, and the displacement can be monitored and pre-warned.

The integrated prevention and treatment method of the burned rock water disaster of the present application proposes the concept of combination of resistance and permeation and advanced active prevention and treatment, breaks the thinking stereotype of traditional coal seam roof water disaster independently relying on water drainage and full section curtain interception, and creates a new concept of active comprehensive prevention and treatment of dynamic supply interception, drainage and dry static reserves, and combined use of local bypass flow. The problems of multiple solutions of geophysical prospecting and limitations of drilling are scientifically solved, and for the first time, the fine quantitative delineation of the strong water-conducting burned rock zone is realized from two-dimensional range to three-dimensional water-rich structure. A gravity drainage of an inclined borehole, a roadway catchment, and a gravity flow of a catchment channel form a passive underground water drainage link. The difficulty of drainage and dryness in treating the burned rock water disaster is reduced, and due to the use of the passive underground water drainage link of the gravity flow of the catchment channel, the cost is further reduced. The collected clean water flows into the external clean water warehouse, realizes repeated use, reduces resource waste, and is suitable for large-scale use and promotion in the field of coal mine water disaster prevention and treatment technology.

The utility model discloses a hydropower station diversion tunnel maintenance drainage system in the technical field of water conservancy and hydropower engineering, which comprises a diversion tunnel body, one side of the diversion tunnel body is connected with a diversion branch pipe, one end of the diversion branch pipe far away from a water intake is connected with a tail water channel, and a tail water gate is arranged in the tail water channel. A water taking opening is formed in the end, close to the diversion tunnel body, of the diversion branch pipe, a water drainage opening is formed in the bottom of the tail water channel, and a water drainage assembly is arranged between the water taking opening and the water drainage opening. When the water level in the diversion tunnel body is higher than the tail water level, self-flowing drainage is achieved through the communicating pipe, energy consumption is reduced, when the water level in the diversion tunnel body is lower than the tail water level, pumping drainage is achieved through the main drainage pump, and meanwhile leaked water and seepage water in the diversion tunnel body are drained through the auxiliary drainage pump; according to the system, various drainage paths are arranged according to different working conditions in the diversion tunnel body, so that the drainage efficiency of the system is improved.

The utility model discloses a novel drainage device of corn fermentation tank belongs to corn fermentation tank technical field, including the jar body, the bottom cone bucket outer wall of jar body is provided with the drainage mechanism on the through -going, the drainage mechanism includes the first outer connection pipe of the through -going jar body, the first outer connection pipe is fixed with the screen in the one -end inner wall in jar body, the center of screen is rotatably installed with the rotating shaft, the rotating shaft is towards the one -end sleeve of scraper on jar body, the rotating shaft is towards the one -end sleeve of spiral blade on jar body, the utility model discloses a scraper, rotating shaft, driving motor with spiral blade etc.

The utility model discloses a kind of bottom mud dredging dehydration treatment devices, including processing frame, bottom plate is installed on the processing frame by placing assembly, the top of bottom plate is fixedly installed with multiple placing contact rollers, multiple placing contact rollers are placed with geotextile tube bag body, rotating knock assembly is provided on the processing frame, the rotating knock assembly is adapted with bottom plate, the top of the processing frame is installed with mounting block by lifting assembly, this bottom mud dredging dehydration treatment device, lifting assembly is set, in the natural gravity drainage process, telescopic pneumatic cylinder operation drives multiple extrusion rollers to move down, geotextile tube bag body can be extruded, water in silt in geotextile tube bag body can be quickly discharged, back-and-forth moving assembly is set, drive motor operation drives multiple extrusion rollers to move back and forth, it can also move back and forth while extruding, geotextile tube bag body can be quickly and effectively extruded and drained, and the drainage effect of internal silt is accelerated.

The invention relates to the technical field of indoor environment regulation and control equipment, and discloses a smart home indoor environment regulation and control device based on a six-constant system, which comprises an external machine body and a fan main body mounted on the outer wall of the external machine body, and an air treatment box is mounted in the external machine body; a dehumidification rotating wheel assembly and a heating main body are rotationally arranged in the air treatment box, a gravity drainage structure depended on by traditional condensation dehumidification is replaced, the internal layout of the device is greatly simplified, and the design and installation difficulty is reduced; water vapor in air is quickly captured through the capillary action and molecular adsorption force of the material surface, the regeneration sector enables the adsorbed water vapor to be vaporized and then discharged through the exhaust main body by means of hot air flow generated by the heating main body, and the risk of condensate water leakage is completely eradicated from the source. Meanwhile, the dehumidification process of the treatment sector and the regeneration process of the regeneration sector are synchronously carried out on the same rotating wheel through the coaxial rotating design, the airflow path loss is reduced, and the indoor humidity regulation and control efficiency is improved.

The present invention discloses an in-situ development method for low-maturity oil shale using an inverted seven-point horizontal well network with gravity drainage, which belongs to the field of in-situ shale development. The method arranges an inverted seven-point horizontal well network containing injection wells and production wells in a target area for exploitation of low-maturity oil shale, and utilizes the horizontal well sections of the production wells to generate a preheating zone for an in-situ conversion reaction to collect mobile oil generated by cracking and draining due to gravity. The inverted seven-point horizontal well network includes at least one well network unit, each well network unit includes an injection well located at the center of a regular hexagon, and horizontal well sections of the production wells located at the six sides of the regular hexagon. Heat is provided by the injection wells to perform gravity drainage in the horizontal well sections of the production wells, thereby improving the mobile oil production efficiency. The in-well temperature and pressure monitoring device can provide real-time feedback on the production process, and at the same time can provide a basis for adjusting the injection flow rate and the temperature of the injected fluid of the injection well, so that the heated fluid injected into the formation is fully utilized.

This invention relates to the field of tunnel engineering technology, and more particularly to a three-dimensional tunnel drainage system and an intelligent tunnel drainage method. The three-dimensional tunnel drainage system includes a drainage well module for preventing water loss. Within this module, a circumferential drainage pipe is fixedly installed along the contour of the tunnel face on the inner wall of the tunnel lining, with both ends connected to drainage ditches on either side of the tunnel. Multiple uniformly arranged gravity drainage pipes are installed on the circumferential drainage pipe, which collect water within the tunnel's surrounding rock and intercept soil particles at corresponding layers. Both sides of the circumferential drainage pipe are connected to capillary drainage pipes. The first end of each capillary drainage pipe is connected to a drainage ditch, and the second end extends into the soil beneath the tunnel foundation. These capillary drainage pipes adsorb pore water from the soil through capillary action. This invention organically integrates gravity drainage and capillary drainage, systematically solving the problem of soil particle migration during the drainage process and ensuring effective drainage.

The invention discloses a method for longitudinally regulating and controlling high-point linear fireflooding of a thick-layer blocky heavy oil reservoir, and belongs to the technical field of oilfield development geology. According to the technical scheme, a fireflood well group is divided into two areas, namely a continuous interlayer area and a non-continuous interlayer area, according to the boundary of the continuous interlayer for blocking gravity drainage and the development condition of the continuous interlayer of a block; according to the gravity oil drainage tracks of different areas, oil well production well sections are optimally configured in a zoning mode; in the continuous interlayer area, the gravity oil drainage high-temperature section is located on L51 + 2, an oil well in the continuous interlayer area is away from an L51 small layer, an L52 small layer is selectively injected, and thermal communication of an L52 oil layer is strengthened; and in the discontinuous interlayer area, the gravity oil drainage high-temperature section gradually descends to the L54 small layer from the L51, and the huff and puff guide effect well section also descends to the L54 small layer from the L51, so that the thermal communication between the high-temperature area and the low-temperature area is enhanced. The method has the beneficial effects that through scientific analysis, accurate division and reasonable configuration, the fireflooding effect, the crude oil recovery rate and the operation safety are remarkably improved, and the method has great significance in promoting efficient development of thick-layer blocky heavy oil reservoirs.

This invention discloses a negative pressure pumping silo storage process for wet sand. Wet sand with a moisture content ≥13.5% (prepared or separated) is transported to a vertically erected silo for storage. Gravity drainage is achieved using a gravity field. The downward-flowing capillary water, under the influence of the vertical gravity field, rapidly descends to the lower part of the silo. A water-repellent ring is installed at the bottom of the silo, collecting all the downward-flowing capillary water and isolating the accumulated capillary water at the bottom of the silo outside the sand discharge port, separating excess water beyond the bound water of fine sand, ultrafine sand, and tailings. The collected capillary water is then channeled through an air-water mixing pipe to form a capillary water penetration zone. The air-water mixing pipe is connected to a jet negative pressure pumping device via a main pipe for negative pressure pumping, ultimately obtaining qualified sand with capillary water and a moisture content of less than 10%, similar to the naturally bound water content of fine sand, ultrafine sand, and tailings, completely eliminating leakage during transportation.

The invention provides an efficient drainage device for a road bridge, and relates to the technical field of bridge drainage, the efficient drainage device comprises a pipe body assembly, and the pipe body assembly comprises a water inlet pipe; a pressure assembly; a cleaning assembly is fixedly connected to the top end of the pressure assembly, the pressure assembly comprises an inner pipe fixedly connected to the water inlet pipe, a filter groove is formed in the top end in the inner pipe, a piston is slidably connected to the interior of the inner pipe, pull belts are fixedly connected to the two sides of the bottom end of the piston, and an adapter column is fixedly connected to the inner wall of the inner pipe; one end of the drawstring away from the piston is fixedly connected with a spring mechanism; through the design, the water flow impact force is enhanced, the drainage speed is increased, meanwhile, the reverse flow phenomenon is prevented, pipe wall self-cleaning and impurity centralized recycling are achieved, the manual cleaning frequency is reduced, and filter screen blockage is avoided; the problems that a traditional static pipeline is prone to backflow and low in drainage efficiency due to gravity drainage are effectively solved.

The utility model discloses a diversion anti-backflow ship drainage structure, and relates to the technical field of ship drainage, the diversion anti-backflow ship drainage structure comprises a deck, one side of the deck is provided with a barrier plate, the lower part of the barrier plate is provided with a connecting pipe, the lower part of the connecting pipe is connected with a communicating pipe, and the communicating pipe is connected with a water inlet pipe. The device comprises a communicating pipe, one end of the communicating pipe is connected with a gathering pipe, the lower portion of the gathering pipe is provided with a backflow prevention assembly, the backflow prevention assembly comprises a cleaning bin and a turbofan, the cleaning bin is installed at the bottom end of the gathering pipe, and the inner wall of the cleaning bin is slidably connected with a filter plate. Impurities are intercepted in a layered mode through the screen and the filter plate, the pipeline blocking risk is reduced, and normal backflow prevention work is guaranteed. The turbofan drives the brush to automatically clean the filter plate, so that the manual maintenance frequency is reduced. Drainage depends on gravity in daily life, a pump is started to accelerate drainage under extreme working conditions, and energy consumption and efficiency are both considered.

The invention relates to the technical field of path control, and discloses a flight control method special for a hydrogen energy unmanned aerial vehicle, which comprises the following steps: carrying out dimensionless time alignment on a multi-source sensing state, and extracting an inverse gravity drainage exposure memory amount reflecting historical accumulation of a bad attitude; the energy supply fragility degree of a future path section is predicted by utilizing inverse gravity drainage exposure memory amount feedforward, the power proportion of a battery and a super capacitor is allocated in advance according to the energy supply fragility degree, and meanwhile, the hydrogen emission frequency is regulated and controlled. In addition, the memory amount and the energy supply gap are jointly incorporated into the path optimization cost to remodel the safe flight route and travel speed. According to the method, time dislocation between transient obstacle avoidance and bottom layer energy response is eliminated, and the long-endurance operation robustness of equipment under complex working conditions is remarkably improved.

The invention discloses an automatic drainage device and method for a new energy automobile air reservoir, and relates to the field of new energy automobiles, the automatic drainage device comprises an air inlet cylinder body, a drainage shell, a sealing top cover, a drainage pipeline and a drainage connector, the air inlet cylinder body is located on one side of the drainage shell, and the sealing top cover is fixedly installed at the upper end of the drainage shell. According to the automatic drainage device and method for the new energy automobile air reservoir, wind power generated in the operation process of a new energy automobile is used as a power source, extra electric power or external energy is not needed, the complete automation of the drainage process is achieved, accumulated water at the bottom of the air reservoir is rapidly sucked through the drainage pipeline, and the drainage efficiency is improved. Compared with traditional gravity drainage or passive valve control drainage, the rotary water suction mode has the advantages that higher efficiency is achieved, air pressure in the air storage cylinder is increased, the drainage process is assisted, drainage difficulty caused by negative pressure of the air storage cylinder is effectively prevented, and drainage efficiency and reliability are improved.

The application discloses a kind of soft interlayer containing slope reinforcement device and method thereof, belong to geotechnical engineering slope reinforcement technical field, including retaining wall and anchor cable, unit is equipped with supplementary plate and is elastically connected, there is water storage component in the side of slope near retaining wall, water tank is arranged at the top of retaining wall, there is water suction component extending to the slope in retaining wall, push component contains connecting barrel, connecting ring, outer ring, flexible pad, bellows, pump body is connected with water suction pipe through three-way pipe in water tank place drainage underground main pipe;The application realizes supporting, anchoring and drainage cooperation by integrating modular multiple retaining wall units, prestressed anchor cable and deep drainage system, overcomes the poor synergy of traditional measures. The setting of water suction component, the active suction of pump body, efficient reduction of pore water pressure, solves the problem of passive inefficiency of traditional gravity drainage. Spring supplementary plate between retaining wall units can elastically adapt to uneven deformation of slope, realize stress redistribution, and its displacement can be monitored and early warned.

The present disclosure generally relates to harvesting geothermal energy from mature and near end-of-life oil and gas reservoirs that have been subjected to secondary oil recovery steam processes like steam-assisted gravity drainage (SAGD), steamflood, etc. The geothermal potential of these mature SAGD reservoirs can be used to generate green electricity thus reducing the greenhouse gas (GHG) footprint of the oil production. Lateral spacing of injectors and producers, with closing of unused members of a well-pair for energy recovery is described.

This application discloses a control method and control system for an autonomous inspection robot of pumped-storage gravity drainage tunnels, belonging to the field of autonomous inspection technology for pumped-storage gravity drainage tunnels. The method includes: generating an initial semantic cross-section by projecting visual features onto a laser point cloud; eliminating accumulated errors and matching absolute station numbers through a tightly coupled visual-laser-inertial navigation factor map to construct a precise semantic cross-section; subsequently, adaptively calling a composite execution head for dredging based on the siltation type and average thickness identified by semantic segmentation; and finally, calculating the thickness reduction rate by reversing and comparing the cross-section, achieving autonomous return upon reaching the target using a closed-loop iteration and benchmark freezing mechanism. This application achieves precise matching of the execution head based on the physical characteristics of siltation and dredging depth determined by thickness, combined with closed-loop quantitative control of dredging-re-inspection-correction, effectively avoiding ineffective operations and over-excavation, and greatly improving the precision and unmanned level of tunnel dredging.

The invention relates to the technical field of petroleum and natural gas and coal bed gas development engineering, and discloses a well type adaptation-based steeply-inclined multi-coal-bed horizontal well coal bed gas development method, which comprises the following steps of: evaluating the stability of a rock interlayer based on geomechanical parameters and taking the rock interlayer as a rock bridge; drilling a main shaft with a raising dip angle of 1-3 degrees in the rock bridge along the stratum trend, and drilling radial branch holes which are arranged in a staggered manner towards the coal seams on the left and right sides; a variable stiffness transition locking module comprising an interlayer slippage joint is installed at the joint of the main shaft and the branch hole; the stress shielding effect of a rock bridge is utilized to overcome the branch hole fracturing problem, and collaborative reservoir transformation is carried out; and on the basis of the uplift gradient of the main shaft, staged drainage and mining of first single-phase gravity drainage and then gas-liquid two-phase flow production are executed. According to the method, the adaptive uplift well type structure is constructed and interlayer stress is decoupled, so that the problems that a shaft of a steeply-inclined stratum is prone to shear failure, a multilateral well is difficult to fracture and accumulated liquid is discharged and mined are solved, and safe and efficient development of multi-coal-seam resources is achieved.

Disclosed herein is a metallurgical furnace and roof having a drain system. The roof has a roof body comprising a top surface having a center opening, a bottom surface opposite the top surface, and an outer sidewall connecting the top surface to the bottom surface. The outer sidewall, the bottom surface and the top surface define an interior portion. An internal spray cooling system is disposed in the interior portion of the body. A drain system is integral with the body. The drain system has a roof evacuation conduit disposed outside the interior portion and configured to collect spay coolant from the interior portion of the body. The drain system additionally has a drain box having a vent and an exit pipe, wherein the roof evacuation conduit channels spent coolant by gravity into the drain box which is evacuated under gravity by the exit pipe.

The application discloses a kind of silt type gravity drainage rainwater bucket, comprising: base, the base is formed with sedimentation tank, the base is formed with vertical and is connected with the perforation of sedimentation tank, the perforation is worn with drain pipe, the upper pipe of drain pipe is stretched into the sedimentation tank;Filter screen cover, detachably cover is set in the upper pipe opening;It is annular to protect component, is erected on the base, the clearance is formed between the protect component and the upper portion of base, the filter screen cover is movably arranged in the inner ring hole of protect component, a plurality of water guide channels are formed on the protect component, the both ends of water guide channel respectively penetrate the outer ring surface and inner ring surface of protect component, the elevation of the bottom hole wall of water guide channel gradually reduces from the middle of water guide channel to the both ends of water guide channel.The application solves the problem that traditional rainwater bucket cannot separate silt in rainwater.

The invention relates to the technical field of condensed water recovery, in particular to a closed condensed water recovery device which comprises a tank body with a water outlet pipeline at the bottom, and the inside of the tank body is separated from a middle steam buffer area, a lower condensed water collection area and an upper negative pressure condensation area through two horizontal partition plates. According to the closed condensed water recovery device, power components such as a pump body do not need to be additionally arranged, the core depends on the falling potential difference of condensed water in the negative-pressure condensation area and negative pressure formed by steam condensation as drainage driving force, energy of the system is fully utilized, dependence on external power is eliminated, and operation energy consumption is remarkably reduced; condensate water guided in by the falling potential drainage pipe forms falling potential impact and is matched with negative pressure guided in by the negative pressure air guide pipe to form double drainage driving, and compared with traditional single gravity drainage, the power is higher, and the efficiency is higher; and meanwhile, condensate water in the pipeline is driven to conduct reciprocating flushing, the whole area of the pipeline can be fully covered, impurity deposition in different sections is thoroughly removed, and the anti-blocking effect is better than that of single-direction disturbance.

The invention relates to the technical field of automobile engine tests, in particular to an engine hot test bench cooling liquid purging method and device and a vehicle. The method comprises the steps that after a hot test is finished, the gas-liquid mixing ratio of fluid in an engine is detected; the residual liquid amount of the cooling liquid is determined according to the fluid gas-liquid mixing ratio; and according to the residual liquid amount, generating a vibration excitation action of the electromagnetic vibration exciter to execute the vibration excitation action so as to purge the cooling liquid of the engine hot test bench, and ending purging until the residual liquid amount is smaller than a preset threshold value. Therefore, the problems that in the related technology, due to attachment of liquid to a water channel and a complex water channel structure, residual liquid is difficult to completely remove by driving cooling liquid or gravity drainage depending on compressed air, due to the fact that complex pipeline butt joint is needed in manual operation, consumed time is long, purging efficiency is low, and a large amount of compressed air is consumed in fixed purging, and the cost is low are solved. And resource waste caused by incapability of timely closing is avoided.

Drinking, process and / or fire-fighting water system comprising a storage tank (1) and a control system, wherein the storage tank (1) has a water supply line (2) and a water pressure line (3), characterized in that an emergency drain (6) for discharging larger quantities of water is arranged in the storage tank (1) and that the emergency drain (6) has pipes and that in each of these pipes a pipe end arranged in the storage tank (1) is arranged below a pipe end located outside the storage tank (1), so that, in the case of emergency drainage, the pipes are completely filled with water, contrary to known gravity drainage systems, so that a negative pressure is created and increased flow velocities ensure a higher transport of the quantities of water.Drinking, process and / or fire-fighting water system comprising a storage tank (1) and a control system, wherein the storage tank (1) has a water supply line (2) and a water pressure line (3), characterized in that an emergency drain (6) for discharging larger quantities of water is arranged in the storage tank (1) and that the emergency drain (6) has pipes and that in each of these pipes a pipe end arranged in the storage tank (1) is arranged below a pipe end located outside the storage tank (1), so that, in the case of emergency drainage, the pipes are completely filled with water, contrary to known gravity drainage systems, so that a negative pressure is created and increased flow velocities ensure a higher transport of the quantities of water.

Plant support equipment includes trays each have a plant-supporting surface and a series of grooves or channels extending below the pot-supporting surface. The plant support trays have water runoff troughs that receive runoff water from the grooves or channels. The plant support trays may be configured to provide gravity-based drainage while supported on a horizontal frame or rack or platform, or may be configured to provide drainage while supported on an angled frame or rack or platform.