1522 results about "Siphon" patented technology

The invention discloses a weak intercalated layer control-based closed conduit-slope system optimization layout method, which comprises the following steps of S1, geological survey and parameter acquisition: accurately positioning a weak intercalated layer through a geological radar and drilling coring, and determining a rock-soil body strength parameter by combining a laboratory rock-soil mechanical test, geological radar data and rock-soil body strength parameters are analyzed through a random forest algorithm, and the interlayer space distribution rule is predicted. By combining geological survey, numerical simulation, intelligent optimization and dynamic monitoring technologies, scientific layout and adjustment of a closed conduit-side slope system are realized, a weak intercalated layer seepage path is accurately cut off, the safety coefficient of the side slope is effectively improved, meanwhile, expansion of a plastic zone is effectively inhibited, settlement of an overlying soil body or large-range deformation of the side slope is reduced, and the stability of the side slope is improved. The seepage stability and the stress slow release capacity of the system are enhanced, the safety of the water diversion project in a complex geological area is improved, and an operable technical path and basis can be provided for layout of similar projects in the future.

The invention discloses a double-side water inlet and outlet independent salt path control valve and an operation method thereof.The double-side water inlet and outlet independent salt path control valve comprises a control valve body, a control valve flow channel switching assembly and a salt path switching assembly, and a grating inner cavity communicating with a softening tank is formed in the control valve body; the water inlet channel and the water outlet channel are both communicated with the grille inner cavity and located in the same straight line direction, the siphon installation channel is communicated with the grille inner cavity, the siphon installation channel is communicated with the salt suction channel through a salt valve assembly installation channel, a pulse booster pump is arranged on the water inlet channel, and the pulse pump is started during back washing and front washing. Based on the cooperative arrangement of the control valve body, the control valve flow channel switching assembly and the salt path switching assembly, the control valve can be conveniently operated, and the working states of purification, backwashing, salt absorption or water supplement of the softening machine can be flexibly switched; and the pulse pump is started during backwashing and conventional washing, so that the pressure of the water inlet is increased, the backwashing and conventional washing time is shortened, the backwashing and conventional washing effects are enhanced, and wastewater discharge is reduced.

The invention discloses a vacuum breaker device with a self-adaptive variable stroke and an anti-backflow function, and relates to the technical field of valve switches, the vacuum breaker device comprises a valve body and an anti-siphon assembly, a flow channel, an inlet, an outlet and a supplementary air inlet are formed in the valve body, and the inlet, the outlet and the supplementary air inlet are communicated with the flow channel; the anti-siphon assembly comprises a first sealing core, a second sealing core and an elastic piece, and the first sealing core is connected with the second sealing core through the elastic piece, so that the vacuum breaker device has an initial state, a positive pressure state and a siphon state; in an initial state, the first sealing core blocks the air supplementing inlet, and the second sealing core blocks the inlet; in a positive pressure state, the first sealing core blocks the supplementary air inlet, and the inlet communicates with the outlet; in a siphon state, the second sealing core blocks the inlet, and the supplementary air inlet communicates with the outlet; according to the technical scheme provided by the invention, the structure of the vacuum breaker device can be simplified, and meanwhile, the self-adaptability of the vacuum breaker device under different working conditions is improved.

A siphon jet flush toilet comprises: a bowl; a rim spout port suppling flush water to the bowl; a discharge trap conduit; a jet spout port spouting flush water toward an inlet of the discharge trap conduit; a reservoir tank including a jet spouting discharge valve and storing flush water; a jet water conduit configured to guide the flush water in the reservoir tank to the jet spout port; and a controller being configured to control a rim spouting in which the flush water is spouted from the rim spout port and a jet spouting in which the flush water is spouted from the jet spout port, wherein the jet spouting discharge valve includes a valve body, the valve body being arranged at a position that is lower than an upper surface of the bowl and higher than a seal water level, and before opening the jet spouting discharge valve, the flush water is supplied to the jet water conduit.

The efficient water distribution device comprises a water distribution pipe and a water distribution spray head, the water distribution pipe is located above the water distribution spray head and can be divided into a water distribution main pipe and a plurality of water distribution branch pipes, the water distribution main pipe is connected with the water distribution branch pipes through flow distribution connectors, a plurality of water distribution holes are formed in the lower portions of the water distribution main pipe and the lower portions of the water distribution branch pipes, and the water distribution spray head is connected with the water distribution main pipe. The water distribution nozzle comprises a water distribution pipe, a plurality of thin circular truncated cone splash baffles and a plurality of water distribution holes, the water distribution pipe is connected with the thin circular truncated cone splash baffles through connecting rods, the adjacent thin circular truncated cone splash baffles are connected through connecting rods, and the water distribution holes are located in the centers of the upper surfaces of the thin circular truncated cone splash baffles. Water enters the water distribution pipe through the flow distribution connector along the water inlet pipe, then water distribution is completed through the water distribution holes below the water distribution pipe, water distribution is completed through the water distribution nozzles after the water falls onto the water distribution disc, the siphon phenomenon possibly occurring can be effectively eliminated, water distribution is more uniform, and therefore the efficiency of the cross flow cooling tower is guaranteed.

The invention provides a combined sand drain drainage structure suitable for a high slope. The combined well drainage structure comprises a row of vertical sand well structures arranged in the side slope along the slope surface line of the side slope and siphon drainage structures arranged at the bottom ends of the row of vertical sand well structures. The vertical sand well structure comprises a vertical well hole, a water permeable pipe and a gravel inverted filter layer, and the water permeable pipe is filled with gravel; the siphon drainage structure comprises a siphon water guide pipe, a horizontal drainage well structure and an inclined drainage pipe. Rainwater of the high slope is collected through the sand wells, the rainwater is collected into the horizontal drainage wells under the action of gravity, underground water collected by the horizontal drainage wells is drained from the drainage holes in the lowest end of the supporting structure through the siphon guide pipes, then negative pressure is generated in the horizontal drainage wells, and drainage of the vertical sand wells is further accelerated. The construction difficulty of the deep drainage structure of the high slope is reduced, and it is guaranteed that underground water enriched under the effects of rainfall, underground pipeline water leakage and the like can be drained in time and rapidly.

There is provided a material transfer system including a reciprocating conveyor which selectively moves in a first direction of movement and a second direction of movement opposite the first direction of movement. The conveyor is configured to promote movement of material in the first direction and inhibit movement of material in the second direction.There is further provided a material transfer system comprising a first reciprocating conveyor which selectively moves material towards a first location. The system includes a second reciprocating conveyor which overlaps with the first reciprocating conveyor. The second reciprocating conveyor selectively moves material from the first location towards a second location.There is also provided a material transfer system comprising a passageway having an upstream inlet and a downstream outlet. The passageway may be a conduit, a siphon or chute. The system includes a reciprocating conveyor conveying fluvial material towards the inlet of the passageway.

The invention relates to the technical field of roof devices, in particular to an anti-blocking siphon roof drain which comprises a drain pipe. The mounting plate is fixedly connected to the upper part of the bucket pipe; the blocking net is fixedly connected to the mounting plate, and a containing cavity is formed in the upper portion of the blocking net; the mounting frame is fixedly connected to the top of the blocking net; the threaded rod is rotationally connected into the blocking net; the mounting ring is sleeved outside the threaded rod in a penetrating manner; the balls are in rolling connection with the mounting ring; the cleaning plate is fixedly connected to the mounting ring; the motor is fixedly connected in the accommodating cavity; and the spiral blade is rotationally connected in the mounting frame. By arranging the cleaning plate capable of moving up and down, intercepted sundries are fished out, the fished-out sundries are collected in the containing cavity in a unified mode in cooperation with the rotating spiral blade, the sundries are prevented from being sucked into the device in a direct sundry treatment mode, and the device is prevented from being blocked, so that the normal drainage function of the device is guaranteed, and the service life of the device is prolonged. The purpose of solving the problem that the normal function is affected by sundries is achieved.

The utility model discloses a prefilter and water consuming system relates to prefilter technical field, wherein prefilter includes shell, filter subassembly and outer skeleton, the shell is provided with water filtration cavity, and is communicated water inlet, water outlet and drain outlet of water filtration cavity, water inlet is communicated with water supply end, water outlet is communicated with water consuming end; the filtering assembly is arranged in the water filtering cavity and comprises a plurality of filtering modules distributed in the first direction, each filtering module is provided with a water passing cavity, a first water passing opening and a second water passing opening, the first water passing openings and the second water passing openings are communicated with the water filtering cavity, the second water passing openings are provided with filtering pieces, and at least part of each filtering piece is obliquely arranged; the outer framework is arranged on the outer side of the filtering assembly and provided with a siphon flow channel, a siphon hole and a first discharging opening, the siphon hole and the first discharging opening are communicated with the siphon flow channel, the siphon hole corresponds to the filtering piece, and the first discharging opening is communicated with the sewage draining opening. According to the technical scheme provided by the utility model, the filtering assembly can be flushed, so that the filtering effect of the filtering assembly is ensured.

The utility model relates to the field of rainwater drainage, and particularly discloses a siphon rainwater hopper which comprises a base plate, a top plate and a rainwater pipe connector which are coaxially arranged, a plurality of rectifying plates distributed in an annular array mode are arranged on the surface, close to the base plate, of the top plate, a plurality of flow guiding plates distributed in an annular array mode are arranged on the other surface of the top plate, and a through groove is formed in the middle of the base plate. A flow adjusting ring plate is arranged between the bottom disc and the top disc, the flow adjusting ring plate is elastically connected with the top disc, the flow adjusting ring plate moves towards the top disc after being subjected to acting force, the flow adjusting ring plate surrounds the through groove by a circle, and a stress ring inclining upwards is arranged on the side, away from the through groove, of the flow adjusting ring plate. The bottom of the flow adjusting ring plate is fixedly connected with a flexible shield; according to the rainwater hopper, external sundries can be prevented from entering the rainwater hopper to cause blockage when the rainwater hopper does not discharge water, meanwhile, the sundries are blocked outside the rainwater hopper, cleaning can be achieved without detaching the rainwater hopper structure, convenience and rapidness are achieved, efficiency is high, and the labor intensity of workers is reduced.

The invention relates to a drain valve (1) for storing or draining a medium (2) from a liquid reservoir (3) into a drain pipe (4). The drain valve (1) comprises a cover (5), a first baffle (9), and a second baffle (10). The first baffle (9) is airtightly connected to the cover (5). A first storage volume (11) is arranged between the first baffle (9) and the second baffle (10). The second baffle (10) is designed to be sealed and connected to the drain pipe (4). The connection further relates to a drainage system with a drain valve (1) and a drain siphon (20).

The invention discloses a mine ecological restoration water storage drainage device with a monitoring structure, which comprises a detection structure, the detection structure is located on the upper side of a water storage filtering structure, the water storage filtering structure is communicated with a water guide structure, the water guide structure is communicated with a gravel filtering structure, and the gravel filtering structure is communicated with a water storage structure and is used for storing water. The detection structure comprises a first water guide groove, a first monitoring assembly is fixed to the first water guide groove and comprises a supporting plate, a rainproof cover and a monitoring body are fixed to the upper side of the supporting plate, the monitoring body is located on the lower side of the rainproof cover, the water storage structure comprises a first water storage tank, and the first water storage tank communicates with a second water storage tank through a siphon. An auxiliary water storage assembly is arranged on the rear side of the second water storage tank and communicates with the first water storage tank, and the water storage and drainage device with the monitoring structure for mine ecological restoration has the advantages that impurities are automatically filtered and cleaned, the interior of the water storage tank is automatically dredged, water is automatically stored, and flood drainage and discharge treatment is conducted in time in the wet season.

The invention discloses a pre-filter and a water consuming system, and relates to the technical field of pre-filters, the pre-filter comprises a filter bottle, a filter assembly, an outer framework and an impeller assembly, the filter bottle is provided with a water filtering cavity and a drain outlet communicated with the water filtering cavity; the filtering assembly is arranged in the water filtering cavity; the outer framework is provided with a siphon flow channel; the outer framework is sleeved with the filtering assembly and can rotate relative to the filtering assembly, the impeller assembly is arranged in the water filtering cavity, the outer framework is in transmission connection with the impeller body, and the installation base is provided with a first water inlet communicated with the siphon flow channel and a water drainage opening communicated with the sewage draining opening. The prefilter provided by the invention can more effectively utilize the power of water flow to automatically clean and filter, and reduces the dependence of external energy (such as electric power), thereby improving the energy efficiency and realizing energy conservation.

The invention provides a multi-stage siphon water level sensing device based on a friction nanometer generator, and aims to overcome the defect that an existing TENG water level sensing device is easily interfered by the environment. The device performs graded monitoring on the water level through a multi-stage siphon structure, and the higher the water level is, the more the triggered siphons are, so that the variable electric signal frequency is generated, and the water level height is accurately reflected. The siphon unit is composed of siphons arranged in an array mode, and each siphon is provided with a water inlet pipe, a water outlet pipe and an exhaust pipe. Through arrangement of a siphon starting position, different water level heights correspond to starting of different siphons. The outlet flow of the siphon unit is converged to the water turbine, the water turbine works through the TENG to generate an electric signal, and the frequency is related to the water level height. The device has the advantages of efficient energy collection, self-driving, durability and reliability, and can bring a major breakthrough to the field of water level monitoring.

The utility model discloses a siphon type roof drain matched with a single-layer flexible roof, which comprises a water collecting hopper, a waterproof coiled material, a fixing ring and a shunting grating cover, the top end of the water collecting hopper radially extends to form a fixed supporting structure, the waterproof coiled material is arranged on the upper side of the fixed supporting structure, and the waterproof coiled material extends out of the fixed supporting structure. A through hole is formed in the position, corresponding to an upper end opening of the water collecting hopper, of the waterproof roll, the fixing ring penetrates through the through hole to be fixedly connected with the water collecting hopper, the fixing ring limits the waterproof roll on the side, away from the fixed supporting structure, of the waterproof roll, an anti-vortex structure is arranged in the fixing ring, and the flow dividing grating covers the fixing ring. The roof drain is better in waterproof performance, and the quality is guaranteed; on-site materials are few, and installation is easy; by the adoption of the assembly type construction technology, the site operation difficulty is lowered, the procedure steps are reduced, the construction efficiency is improved, and the construction quality is guaranteed; installation and maintenance are easy; siphon is generated at the lower water level in front of the bucket, and the load rising hidden danger caused by roof accumulated water can be reduced.

The invention discloses pipeline transfer equipment for inverted siphon construction, and particularly relates to the field of transfer equipment.The pipeline transfer equipment comprises a supporting mechanism, the supporting mechanism comprises a frame, first rollers are arranged at the bottom of the frame, a turnover mechanism is arranged at the top of the frame, the turnover mechanism comprises a supporting plate, the supporting plate is hinged to the frame, and second rollers are arranged at the bottom of the supporting plate; the length of the supporting plate is greater than that of the frame; and a horizontal driving mechanism is arranged on the supporting plate. Through the arrangement of the turnover mechanism and the horizontal driving mechanism, after an accessory pipeline is placed on a moving seat, the accessory pipeline is positioned through movement of a clamping seat, a first linear driver drives a supporting plate to rotate, and when the supporting plate moves along a slope, the supporting plate is matched with the moving seat to drive the accessory pipeline to move; the effect of dynamically adjusting the position of the accessory pipeline is achieved, damage to the end of the accessory pipeline due to collision is avoided, it is guaranteed that the accessory pipeline has the good sealing effect after construction, and potential safety hazards are eliminated.

The invention relates to the technical field of photo-thermal power generation, in particular to a fused salt ultra-low liquid level conveying device based on a siphon effect, which comprises a hot fused salt storage tank for storing hot fused salt; the molten salt transition tower is a columnar body and is communicated with the hot molten salt storage tank through a siphon pipeline, the height from a pipeline opening, located in one side of the hot molten salt storage tank, of the siphon pipeline to the bottom of the hot molten salt storage tank is smaller than 0.3 m, the top of the molten salt transition tower is connected with a conveying pump, the conveying pump is connected with a conveying pipe, and the conveying pipe is connected with a conveying pipeline. The inlet of the conveying pipe is lower than the molten salt liquid level of the molten salt transition tower; and the bottom of the molten salt transition tower is at least 1.5 m lower than the bottom of the hot molten salt storage tank. The fused salt ultra-low liquid level conveying device based on the siphon effect can greatly reduce waste of a fused salt dead zone of the hot fused salt storage tank.

The utility model discloses a vertical steam-water separator which comprises a tank body, the tank body is communicated with a steam inlet pipe, an exhaust pipe and a drain pipe, a baffle plate for dividing the tank body into an inner cavity and an outer cavity is arranged in the tank body, and a heat insulation material is packaged in the inner cavity, so that the baffle plate can be kept in a high-temperature state. And water vapor entering the tank body is prevented from being cooled and condensed on the surface of the baffle plate with relatively low temperature. The inner cavity is fixedly arranged on the tank body through two nested and separated barrels, a through hole is formed between the two barrels, high-temperature water in the steam-water separator can be kept for a period of time in the tank body through the two barrels, continuous evaporation of the high-temperature water is facilitated, after the liquid level exceeds the through hole, the electronic liquid level meter sends out a signal, the PLC control system opens the electronic valve, and the steam-water separator is started. The drainage work is completed through the siphon principle.

The invention relates to a system (2) for filling a liquid tank (30), which comprises: - a filling chamber (11) connected to the inside of the tank; - a means (13) for detecting non-compliant liquid in the filling chamber; - a safety means (90, 95) suitable for blocking the liquid in the filling chamber and / or for sending a warning signal to the technician; - a computer suitable for controlling the safety means according to the compliance of the liquid detected in the filling chamber by the detection means. According to the invention, the filling chamber is connected to the inside of the tank by a siphon (101) and is delimited by an at least partially cylindrical side wall (15), and a piston is provided which is suitable for sliding along the side wall in order to push the liquid back from the filling chamber to the inside of the tank.

The present invention discloses an automatic water treatment device for drainage pipes, which relates to the technical field of water treatment for drainage pipes and includes: a rotary weir plate, a seal, a siphon drainage pipe, a medicine storage device, and a push-suction type medicine feeder. The rotary weir plate and the seal cooperate to intercept the sewage in the drainage pipe. The siphon drainage pipe quickly sucks the sewage and alluvium upstream of the rotary weir plate to the downstream of the rotary weir plate. The rotary weir plate and the medicine storage device cooperate to realize the automatic rotation and reset of the rotary weir plate. The medicine storage device and the push-suction type medicine feeder cooperate, and the push-suction type medicine feeder can adjust the dosage of medicine according to the water flow rate of the drainage pipe. For the separate stormwater pipes with mixed sewage, the present invention can prevent the formation of sediments in the drainage pipe during the dry season and automatically and reasonably dose the water flow during the rainy season, so that the mixing ratio of the medicine and the rainwater remains stable.

The invention discloses a permafrost railway roadbed structure design method based on an adsorption type all-season hot rod. The permafrost railway roadbed structure design method comprises the steps that the solar radiation intensity and the annual average ground temperature distribution of permafrost in a target area are evaluated; measuring frozen soil active layer thickness, frozen soil ice content space distribution and frozen soil thermophysical parameters; establishing a refrigeration power model of the adsorption type hot rod, and calibrating the refrigeration efficiency of the adsorption type hot rod; according to the calibrated refrigeration efficiency of the adsorption type hot rod, designing layout parameters of the adsorption type all-season hot rod in the roadbed; according to temperature rise prediction, the refrigeration power model is corrected, and parameters of the adsorption type all-season hot rod are dynamically adjusted; and carrying out a hot rod roadbed prototype test, and carrying out dynamic regulation and control on parameters of the adsorption type all-season hot rod. The limitation that a traditional siphon type hot rod only works in winter is broken through, it is ensured that the roadbed keeps the low-temperature heat dissipation capacity under different climate conditions all the year round, and the heat stability of the railway roadbed in the permafrost region is greatly improved.

The utility model discloses a water delivery pipeline inverted siphon device capable of automatically flushing and discharging sludge, which is characterized in that an air compression device is arranged in a water inlet equipment well, an air flushing valve is arranged behind the air compression device, the other side of the air flushing valve is connected with an air flushing pipe, and the air flushing pipe penetrates through the water inlet equipment well and then extends to the bottom of a water inlet of a descending pipe; the air flushing pipe is communicated with the bottom of the parallel pipe through an inclined tee joint at a certain distance, is communicated with the bottom of the sludge hopper through a regular tee joint, is communicated with the bottom of the ascending pipe through a regular tee joint at a certain distance, and is provided with an adding ring at the tail end of the regular tee joint, and an air outlet hole is formed in the adding ring. The device can automatically flush and discharge sludge according to the deposition degree of the water conveying pipeline, sludge deposited at the bottom of the inverted siphon pipe is flushed into the sludge hopper through compressed air, and then the sludge deposited at the bottom of the sludge hopper is lifted to a sludge discharge wet well through the compressed air and then discharged out of the system.

The invention relates to the technical field of water treatment and purification, and discloses a multi-media filter, including a filter medium replacement device, wherein the bottom of the filter medium replacement device is threadedly connected to a siphon base device, and a nut at one end of the top of the siphon base device is connected to multiple filtering devices. A filter medium replacement device is provided, and the current is changed by changing the water pressure to break the circuit, and the fixation of the filter medium is cancelled for replacement, which is beneficial to avoid the problem that multiple media in the multi-media filter are difficult to replace due to adhesion. A siphon base device is provided at the bottom of the water pipe, and suction is generated by moving the piston upward to suck water from the bottom to the top to flush away impurities that block the filter material and discharge it out of the device, so as to solve the problem that when filtering water, the filter medium is blocked and the influence on the water source filtration is produced. Multiple filtering devices are provided, and multiple filtering is performed until the need is met, which is beneficial to solve the problem that traditional multi-media filters are sensitive to water quality.

The utility model discloses a separation type thermosyphon evaporation cold screw unit which comprises a machine box. A screw unit skid is arranged in the machine box and comprises a compressor, an oil separator, an integrated siphon tank, a liquid storage device and a siphon oil cooling plate heat exchanger, the compressor is connected to the oil separator and the siphon oil cooling plate heat exchanger through an exhaust assembly and an oil return assembly respectively, the oil separator is communicated with the evaporation cooling upper coil pipe, and the integrated siphon tank is communicated with the liquid storage device. The oil separator is connected to the siphon oil cooling plate heat exchanger through a crude oil assembly, the evaporation cooling upper coil pipe is communicated with the integrated siphon tank, the integrated siphon tank is communicated with the liquid storage device through an overflow pipe, and the integrated siphon tank is respectively communicated with the evaporation cooling upper coil pipe, the siphon oil cooling plate heat exchanger and the liquid storage device through liquid storage device balance pipes. The integrated siphon tank is connected to the siphon oil cooling plate heat exchanger through a liquid refrigerant assembly. The high integration of the system is realized, the transportation is convenient, the height difference is formed between the evaporation cooling upper box body and the screw unit skid, the refrigerant is ensured to overcome the flowing resistance of the pipeline, and the construction period can be shortened at the same time.

The utility model discloses integrated water purification equipment with an automatic backwashing function, which comprises a control system, a backwashing siphon and a filter chamber, the backwashing siphon comprises an upper pipe and a lower pipe, the upper pipe is sleeved outside the upper section of the lower pipe, the upper end of the upper pipe is provided with a liquid level switch, the lower end of the upper pipe is hermetically connected with the outer wall of the middle part of the lower pipe, and the filter chamber is connected with the control system. A three-way change-over valve is further arranged at the top of the upper pipe of the backwashing siphon, three ports of the three-way change-over valve are communicated with the upper end of the backwashing siphon, an output port of the vacuum pump and the outside respectively, and an input port of the vacuum pump is communicated with the filter chamber through a water injection electromagnetic valve; the three-way change-over valve, the vacuum pump, the water injection electromagnetic valve and the liquid level switch are electrically connected with the control system. According to the water purification equipment, the blockage degree of the filter material layer is judged through the water level in the backwashing siphon, and when a liquid level switch signal is switched on, the three-way change-over valve and the vacuum pump are controlled by the control system to start for forced backwashing, or regular forced backwashing can be set.

The invention provides a test system and a test method for verifying the reverse blowing capacity of a siphon breaking device under low pressure. The test system comprises a siphon breaking device, a low-pressure test tank and a discharge pipeline. Wherein a working medium is contained in the low-pressure test tank. And the siphon breaking device is arranged in the low-pressure test tank. The siphon breaking device is connected with the discharge pipeline, and the discharge pipeline is communicated with the outside of the low-pressure test tank. And the discharge pipeline is provided with a crevasse simulation structure. Under the action of pressure difference generated by the crevasse simulation structure, the working medium in the low-pressure test tank is discharged out of the low-pressure test tank from the siphon breaking device through the discharge pipeline so as to obtain test data of the siphon breaking device, and then the reverse blowing capacity of the siphon breaking device under low pressure is obtained. The test system can test and verify the ability of the siphon breaking device to alleviate a break accident under a low pressure condition, and is reasonably designed.

To provide a trough system, particularly a large trough system with a reduced diameter part, which can more reliably produce a siphon phenomenon and stably propagate the produced siphon phenomenon to an upstream portion.SOLUTION: A trough system 1 comprises an eaves gutter 10, a downspout 45, a connection joint 35 disposed downstream of the eaves gutter and connected to an upper end part of the downspout, and a siphon joint 50 having a reduced diameter part and disposed on the downspout. A flow channel cross section S of the eaves gutter is 11000 mm2 or more. An inner diameter of the downspout is 65 mm or more. A length L7 of the downspout located between the connection joint and the siphon joint is 1 m or more.SELECTED DRAWING: Figure 1

The utility model provides a simple water-based fire extinguisher, which relates to the technical field of fire extinguishers, and comprises a bottle body, a control valve assembly and a spray pipe, the control valve assembly is positioned above the bottle body, and the control valve assembly comprises a siphon, a supporting plate, a pressing plate and a valve pipeline, the siphon is located in the bottle body, the upper end of the siphon is communicated with the valve pipeline, the upper end of the valve pipeline is fixedly assembled and connected with the supporting plate, the pressing plate is rotationally arranged above the supporting plate, the spraying pipe is arranged at the output end of the valve pipeline in a sealed and communicated mode, an inner pipe is arranged above the supporting plate, and the spraying pipe is arranged in the inner pipe. An outer pipe is arranged above the pressing plate, the upper end of the inner pipe penetrates through the pressing plate and extends into the outer pipe, and the end, away from the pressing plate, of the inner pipe extends to the outer end of the outer pipe. During fire extinguishment, the bottle body is bound on the body, so that fire extinguishers can walk freely and do not need to carry the bottle body manually, and the labor force of people during fire extinguishment is saved.

The invention provides a test system and a test method for verifying the forward injection capability of a siphon breaking device under high pressure. The test system comprises a siphon breaking device, a high-pressure test tank, an inlet flow meter and an outlet flow meter. And the siphon breaking device is arranged in the high-pressure test tank. The first port of the siphon breaking device is provided with an inlet flowmeter, and the inlet flowmeter is used for obtaining the flow of the working medium entering the high-pressure test tank. An outlet flow meter is arranged at a second port of the siphon breaking device and is used for acquiring the flow of the working medium flowing out of the high-pressure test tank. A working medium can flow into the siphon destroying device from the first port of the siphon destroying device and is discharged from the second port of the siphon destroying device, the drainage ratio of the siphon destroying device is obtained through the inlet flow meter and the outlet flow meter, and then the forward injection capacity of the siphon destroying device under high pressure is obtained. The testing system can be used for verifying the forward injection capacity of the siphon breaking device under a high-pressure condition.

The present invention discloses an anti-siltation and anti-impact water-dividing structure for the intersection of a karst tunnel and an underground river. The structure utilizes an upstream water-dividing weir, a downstream force-dissipating weir, a porous box culvert-type V-shaped inverted siphon water pipe and an open overflow channel, so that the karst tunnel structure divides the underground river intersecting therewith into upper and lower water-passing sections; the lower water-passing section is a porous box culvert-type V-shaped inverted siphon water pipe, and the upper water-passing section is an open overflow channel. The water-dividing structure of the present invention diverts the underground river through the karst tunnel according to the dry season and the flood season. The buried depth of the V-shaped inverted siphon hole water pipe is shallow, and there is no need to adjust the water flow gradient of the underground river. In addition, the V-shaped inverted siphon hole water pipe solves the problem of siltation on the upstream side of the lining structure of the upstream karst tunnel. At the same time, the water-dividing weir reduces the impact load of the water flow on the lining structure during the flood season, so that the upper and lower diverted water loads achieve a certain degree of balance.