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166 results about "Water brake" patented technology

A water brake is a type of fluid coupling used to absorb mechanical energy and usually consists of a turbine or propeller mounted in an enclosure filled with water. As the turbine or propeller turns, mechanical energy is transferred to the water due to turbulence and friction. The shock caused by the acceleration of the water as it passes from pockets in the stator to the pockets in the spinning rotor requires energy. That energy heats the water due to the friction as the water moves through the water brake. Almost all of the horsepower of the system turning the rotor (usually an internal combustion engine) is converted into a temperature change of the water. A very small amount of energy is taken by the bearings and seals within the unit. Therefore, water must constantly move through the device at a rate proportional to the horse power that is being absorbed. Water temperature exiting the unit must be kept under 120-160F (50-70 °C) to prevent scale formation and cavitation. The water enters in the center of the device and after passing through the pockets in the stator and rotor exits the outside of the housing though a controlled orifice. The amount of loading is dependent on the level of water inside the housing. Some water brakes vary the load by controlling the inlet water volume only and have a set outlet orifice size depending on the desired hp to be absorbed and some control both input and output orifices at the same time which allows greater control over outlet water temperatures. The housing is vented to the outside to allow air to displace the water as the water level in the unit rises and falls.

Siphoning type reservoir desilting and screening device and use method thereof

The invention discloses a siphoning type reservoir desilting and screening device and a use method of the siphoning type reservoir desilting and screening device. The siphoning type reservoir desilting and screening device comprises a swinging and stirring mud sucking nozzle, a mud sucking state sensor, a water power depositing material screening device and the like. A row of anchor blocks which are vertical to the axis of a dam are arranged on an upstream dam slope, a dam top and a downstream dam slope of the reservoir dam. Water sucking pipes and mud sucking pipes are installed on the anchor blocks in parallel. Mud sucking hoses are loaded on a row of floating boats on the water surface of the water reservoir. The mud sucking state sensor is arranged on the suspended ceiling part of a derrick mast of the head of a powerboat, a steel wire rope penetrates through a fixed pulley which is connected with the mud sucking state sensor to lift and sink the swinging and stirring mud sucking nozzle to the sediment deposit layer at the bottom of the water reservoir. A water power depositing material screening device, a material field, a depositing pool, a water diversion sluice and a water diversion canal are arranged at the foot of the downstream dam. The siphon principle is used by the siphoning type reservoir desilting and screening device to perform desilting on a reservoir zone, power is provided for the depositing material screening device and the screened sand and gravel materials are used as construction materials. Water is introduced into the canal for irrigation. The siphoning type reservoir desilting and screening device can reasonably utilize water resources and protect the water environment.
Owner:HEFEI UNIV OF TECH

Bottom shaft driven flap gate

The invention discloses a bottom shaft driven flap gate, and aims to provide the bottom shaft driven flap gate capable of improving a water sealing effect at a middle support and eliminating influence of bottom shaft expansion caused by linear expansion due to temperature variation and stress deformation on a pier penetrating water seal and a gate flap. The technical scheme provided by the invention is that the bottom shaft driven flap gate comprises a driving device, a driving arm and a bottom shaft connected with a gate flap, wherein the bottom shaft is arranged on the middle support of the bottom shaft; the bottom shaft is connected in sections through a connecting device; the middle support of the bottom shaft is in an open structure; and the bottom water seal is in continuous linear contact with the bottom shaft. The bottom shaft driven flap gate has the beneficial effects that the middle support is in the open structure; the bottom water seal can be in continuous linear contact with the bottom shaft, the water seal effect of a bottom water stop is greatly improved, the support can be maintained in the working state that water is stopped in front of the gate and no water exists behind the gate, the middle connecting device of the bottom shaft is a synchronous power transmission and gap telescopic connecting device, and the influence of length expansion of the bottom shaft and the gate flap caused by the temperature variation and the stress change on the pier penetrating sealing effect of the bottom shaft and the engineering operation safety is eliminated. The gate has the advantages of simple and compact structure, good water sealing effect, convenience in mounting and maintenance and capability of guaranteeing the engineering operation safety.
Owner:SHANDONG SURVEY & DESIGN INST OF WATER CONSERVANCY

Inertia measurement apparatus rocket sled overload test method based on 9 km orbit

The present invention discloses an inertia measurement apparatus rocket sled overload test method based on a 9 km orbit. According to the method, three rich positive direction-negative direction overloads are provided in one test process; in each alternation process, an engine ignites to provide a heading overload at the starting stage of the test, and a heading positive direction acceleration is generated, wherein the process is the active segment; when the work of the engine stops, frictional resistance and air resistance of the orbit are applied on the rocket sled, and a heading negative direction acceleration is generated, wherein the process is the free gliding segment; when the rocket sled enters a water brake region, orbit resistance and air resistance are applied on the rocket sled, greater water brake force is further applied on the rocket sled, and the greater heading negative direction acceleration is generated, such that the speed of the rocket sled body is reduced, the rocket sled body is safely recovered, the basis is provided for validation of the large dynamic performance of the inertial measurement apparatus, test preparation time, test cost, human power and material resources are saved under the premise of unchanging of the test equipment, and effectiveness and coherence of the test are ensured.
Owner:BEIJING INST OF AEROSPACE CONTROL DEVICES

Water brake system for rocket sled

InactiveCN102072830ABrake load shortDirect force routeLiquid resistance brakesStructural/machines measurementWater brakeTrack brake
The invention provides a water brake system for a rocket sled, which comprises a water brake arranged on a rocket sled vehicle body and a water tank arranged on a track braking section of a rocket sled track, wherein the water brake is arranged on the front part of the rocket sled vehicle body and comprises a water inlet, a water splitting wedge and two water guide channels which are arranged symmetrically on the left and right; the water inlet is arranged in the center of the front end of the rocket sled vehicle body, and the water splitting wedge separates the water inlets into left and right parts to be communicated with the two water guide channels respectively; the water outlets of the two water guide channels are arranged on the two sides of the rocket sled vehicle body respectively; and the water tank is a strip water tank made of a light and brittle material and contains water, the water tank is arranged on a water tank track which is positioned between the two rails of the rocket sled track and parallel to the rocket sled track, and the position of the cross section of the water tank relative to the rocket sled track is consistent with the position of the water inlet relative to the rocket sled track. The structure makes the brake load of the reducing section of the rocket sled have the shortest and most direct power transmission line and minimizes added bending moment generated by the brake load.
Owner:AEROSPACE LIFE SUPPORT IND LTD

Counterweight-variable and hydraulic power-controllable automatic fixed shaft turning plate gate

ActiveCN105256770ALower or raise the water levelGuaranteed safe operationBarrages/weirsWater brakeWater storage tank
The invention discloses a counterweight-variable and hydraulic power-controllable automatic fixed shaft turning plate gate; a water tank is arranged at the lower part of the back side of a gate; the gate is connected with a rotating shaft; the rotating shaft is connected with a water fan in a water storage tank by penetrating through an open web type gate pier wall; a steel wire rope, supported by a bracket and a pulley, of a heavy hammer of a water collecting well pulls the water fan; and a reservoir is communicated with the water storage tank and the water collecting well by water inlet and outlet pipes. The gate with the water tank is arranged; when the gate is closed or opened, a counterweight is changed, so that the gate is flexible in opening or closing; the rotating shaft is fixedly connected with the gate, and is prevented from being blocked by floating impurities; a gate pier bracket and a baseplate bracket adopt different shapes to prevent floating objects from blocking a lock chamber to be in favor of safe flood discharge of a water gate; the heavy hammer of the water collecting well is arranged for pulling the water fan to solve manual control of gate opening degree and timing water diversion and to guarantee normal operation of the gate under special working conditions; and the water fan and a vibration reducing support prevent the opening/closing of the gate from colliding the gate pier bracket and a baseplate support pier of the locking chamber, so that the gate operation stability is guaranteed, and the engineering life is prolonged.
Owner:谢太生

Manual release device for air brake

The embodiment of the invention provides a manual release device for an air brake. The manual release device comprises a cut-out cock, a first operation handle, a flexible shaft and two connection devices, wherein the cut-out cock is provided with a first rotating rod; the first end of the first rotating rod is connected with a valve core of the cur-out cock; the first rotating rod is provided with first grooves; one of the connection devices comprises steel balls, a clamping sleeve, springs and a connection body; the first end of the connection body is provided with a holding cavity and the second end thereof is connected with the flexible shaft; stopping parts are arranged at the circumference of the first end of the connection body; first through holes are arranged at the outer wall ofthe holding cavity; the clamping sleeve is sleeved on the connection body; the inner wall of one end, which is away from the flexible shaft, of the clamping sleeve is provided with second grooves; oneend of each spring is connected to the outer wall of the connection body and the other end thereof is connected to the inner wall of the clamping sleeve; the first end of the connection body of the one connection device is connected with the second end of the first rotating rod; and the other connection device is arranged in a vehicle body. The manual release device for the air brake can realizethe cutoff and recovery operation of air supply for braking in a vehicle or under the vehicle.
Owner:CRRC TANGSHAN CO LTD

Large-deformation-adaptable water stop for use between sluice bottom and deep overburden layer foundation cutoff wall top, and construction method

InactiveCN102839689ASolve water stop connection problemsEnsure anti-seepage and water-proof effectArtificial islandsUnderwater structuresWater brakeStructural engineering
In a large-deformation-adaptable anti-seepage water stop structure for use between a sluice bottom and a deep overburden layer foundation cutoff wall top, an inorganic interface binder (10) is coated on the contact face between a formwork erection cast-in-place concrete cutoff wall (2) and a slot hole poured cutoff wall (1), plastic water stop member (6) is arranged at one side of the formwork erection cast-in-place concrete cutoff wall (2), a copper water stop member (7) is arranged at the other side of the formwork erection cast-in-place concrete cutoff wall (2), the compression modulus of elasticity of a polyethylene closed-cell foam board is 2.4 plus or minus 5MPa, the height of a wall top cavity filled with the polyethylene closed-cell foam board is 30cm, and the widths of cavities on the two sides are 10cm. The invention mainly solves the problem of safe connection between the sluice bottom plate and the cutoff wall top when relative large vertical deformation (up to 6cm) and horizontal deformation (up to 2cm) occur to the deep overburden layer foundation sluice bottom plate concrete while relatively small deformation occurs to the cutoff wall top. The invention also discloses a construction method of the structure.
Owner:CHANGJIANG SURVEY PLANNING DESIGN & RES

Automatic water cooling system of car brake

The invention discloses an automatic water cooling system of a car brake. The automatic water cooling system comprises a water tank, a nozzle, a controller, a temperature sensor, a control valve or / and a water pump, wherein the control valve or / and the water pump is / are mounted on a communication water pipe between the nozzle and the water tank; an input end and an output end of the controller are respectively connected with the temperature sensor and the control valve or / and the water pump; the automatic water cooling system is characterized in that an edge position of a braking bottom plate of the car brake is provided with a mounting hole; the front end of the temperature sensor penetrates through the back end of the mounting hole and is fixed at the outer side of the braking bottom plate through a connection element; the front end of the temperature sensor is inserted into an inner space of a braking drum of the car brake, and a gap of 0.1-10.0mm is formed in an annular inner surface of the braking drum; and the position of the temperature sensor is located at the position which is not contacted with a brake shoe block of the brake and a frictions sheet. According to the water cooling system disclosed by the invention, the temperature is accurately controlled; and the brake is effectively prevented from being burnt and the consumption of cooling water is reduced.
Owner:王建章 +1

Water gate steel wire rope rust removal maintenance device

The invention discloses a water gate steel wire rope rust removal maintenance device. The water gate steel wire rope rust removal maintenance device comprises a bottom plate, a vertical rod, a rust removing device and guiding devices; two vertical plates arranged in parallel in the vertical direction are fixedly connected to the bottom plate, and a control box is fixedly connected to the upper ends of the vertical plates; the bottom end of the vertical rod is fixedly connected to the bottom plate, and the top end of the vertical rod is fixedly connected to the top of the control box; the rustremoving device is fixedly connected to the vertical rod, the rust removing device comprises four steel wire brush rollers, the steel wire brush rollers are symmetrically arranged on a steel wire ropeto be maintained in pairs, the steel wire brush rollers are fixedly connected to output shafts of driving motors correspondingly, and the driving motors are electrically connected with a control panel on the control box; and the two sets of guiding devices are fixedly connected to the bottom plate and the control box correspondingly, each guiding device comprises a connecting plate, two guiding pulleys with the adjustable interval are symmetrically arranged at one end of each connecting plate, and the other ends of the connecting plates are fixedly connected to the bottom plate and the control box correspondingly.
Owner:EAST ROUTE OF SOUTH TO NORTH WATER TRANSFER PROJECT JIANGSU WATER SOURCE

Water level measuring and reporting device for wind power generation system to supply power to water level sensor

The invention relates to a device for measuring and predicting a water level with a wind generator system supplying power for a level sensor, which belongs to the technical field of new energy Internet of things. The device is characterized in that impellers driven by wind power of a wind generator arranged on a wind power pillar top end is rotated fast to drive the wind generator to produce current; one part of the current supplies power to a buoyancy device, a level sensor and a wireless transmitting antenna through lead wires and a shunt; when the level in a river rises or drops, the buoyancy device dipped in the river can be risen or dropped with the rise and drop of the river; the level sensor arranged on the upper part of the buoyancy device rises or drops with the buoyancy device; the wireless transmitting antenna, the level sensor and the buoyancy device slides upwards and rises or slides downwards and drops along the edge of a level ruler; the level sensor converts the perceived change of the straight line distance of water depth height of the level ruler into an electric signal, and the electric signal is sent to the air by the wireless transmitting antenna arranged on the level sensor. And the other part of the current supplies power for a water gate.
Owner:NANTONG TONGDA SILICON STEEL STAMPING TECH CO LTD

Wet brake system featured by double-loop air brake of engineering dump truck

ActiveCN106080564ASmooth brakingClearance does not need to be adjustedBraking action transmissionWater brakeParking brake
The invention discloses a wet brake system featured by the double-loop air brake of an engineering dump truck. The wet brake system comprises a front axle running brake line, a rear axle running brake line, a front axle running intensifier pump, a rear axle running intensifier pump and multiple wet brakes. The front axle running intensifier pump and the rear axle running intensifier pump are arranged on the front axle running brake line and the rear axle running brake line; the multiple wet brakes are arranged to conduct front axle brake and rear axle brake through the front axle running brake line and the rear axle running brake line; and the front axle running intensifier pump and the rear axle running intensifier pump assist the multiple wet brakes in air-entrapping brake. According to the invention, the double-loop air brake and the wet brakes are allocated reasonably, when one loop breaks down, the other loop can work normally; the running brake, parking brake and emergency brake can be realized implemented simultaneously; therefore the wet brake system featured by the double-loop air brake of the engineering dump truck efficiently improves the brake performance and use security of the vehicle, and can guarantee a good brake effect even on wet roads and in the borehole operation environment with poor air ventilation.
Owner:SHAANXI TONLY HEAVY IND

Detection device for detecting bearing capacity of sluice dam

The invention relates to the technical field of hydraulic engineering and discloses a detection device for detecting the bearing capacity of a sluice dam. The device comprises a box body, wherein a filter net is fixedly arranged on one side of the box body; a support frame is fixedly arranged inside the box body; a water tank is movably arranged inside the box body; a corrugated pipe is fixedly arranged at the middle part of one side of the water tank; connecting plates are fixedly arranged on one sides of the top and the bottom of the water tank; and movable devices are fixedly connected at the middle parts of one sides of the two connecting plates. The detection device for detecting the bearing capacity of the sluice dam has the beneficial effects that through the movable devices, when the amount of water in the dam is small, the water pressure is not enough to make the water tank move to the left, the pressure value of a pressure gauge is in a stable state at the moment and when theamount of water in the dam is increased, the water tank is pushed to the left under the action of water pressure, a water inlet of a water pipe is automatically opened without manual operation of anoperator through a control system and the water pressure can be monitored in real time.
Owner:文志敏
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