14results about How to "Stable water flow" patented technology

The utility model discloses a multistage denitrification deep bed filter which comprises a filter body, a middle-section filter box is fixedly mounted at the top of the filter body, a top-end filter box is fixedly mounted at the top of the middle-section filter box, and a coarse sand layer is fixedly connected to the position, close to the bottom, in the top-end filter box. A fine sand layer, an activated carbon layer, a fiber filter screen and a membrane filter layer are sequentially and fixedly connected to the interior of the middle-section filter box from top to bottom. According to the multi-stage denitrification deep-bed filter tank, the cleaning brush is arranged in the top end filter tank and is matched with a sliding structure of an air cylinder, a driving motor and a movable plate, so that automatic cleaning of a coarse sand layer is realized, and the cleaning brush is driven by the driving motor, and the air cylinder enables the movable plate to move back and forth along a supporting sliding rod; organic matters, microorganism residue dirt and impurities accumulated on the coarse sand layer are effectively removed, the cleanliness of the pre-filtering layer is remarkably improved, and the phenomena of hardening and blocking of a filter material are effectively prevented.

The invention relates to the technical field of nuclear power feed pumps, and discloses a variable-frequency and variable-speed starting feed pump for a nuclear power plant, which comprises a pump body, a driving shaft arranged in the pump body, a variable-speed motor arranged at one end of the driving shaft, an auxiliary water delivery assembly arranged on one side of the pump body, and a multi-stage impeller mechanism and an adjusting assembly arranged in the pump body, a main water inlet and a main water outlet are formed in the top of the pump body, water flow enters the front cavity from the main water inlet through the arranged auxiliary water conveying assembly and the multi-stage impeller mechanism, the speed adjusting motor runs at a low speed and drives the front impeller body and the rear impellers to rotate in the pump body through the driving shaft, and when the front impeller body rotates, the rear impellers rotate in the pump body. Water flow can be divided into two parts to be conveyed in two directions through the inner row of blades and the outer row of blades, so that the water flow and pressure are more stable, impact on key equipment is reduced, different working condition requirements are better met, and the effect of improving the stability and reliability of a system is achieved.

The utility model discloses a water dispenser and a waterway system thereof, the waterway system of the water dispenser comprises: a normal temperature water distribution pool, which is communicated with a water source; the two ends of the first water inlet flow path are connected and communicated with the hot tank assembly and the normal-temperature water distribution pool respectively; the two ends of the second water inlet flow path are connected and communicated with the cold tank assembly and the normal-temperature water distribution pool respectively; the two ends of the first water outlet flow path are connected and communicated with the hot tank assembly and the water outlet device respectively, and the two ends of the second water outlet flow path are connected and communicated with the cold tank assembly and the water outlet device respectively. According to the waterway system of the water dispenser, the normal-temperature water distribution pool is arranged independent of the cold tank assembly and the hot tank assembly, so that the normal-temperature water is not slightly cold or slightly hot and is always kept consistent with the environment temperature, and the stable water outlet flow of the normal-temperature water for a long time is ensured; and the conditions of flow attenuation and flow cutoff caused by taking normal-temperature water for a long time are avoided.

This utility model relates to the field of siphon drainage technology, specifically a roof siphon drainage anti-clogging device, including a rainwater hopper. An anti-vortex guide hood is fixedly connected to the middle of the inner wall of the rainwater hopper. A water inlet grille is fixedly connected to the top of the anti-vortex guide hood. An anti-clogging cover is fixedly connected to the upper surface of the rainwater hopper, and an anti-clogging pipe is fixedly connected to the bottom of the rainwater hopper. Through the cooperation of the anti-clogging cover and the water inlet grille, large and medium-sized impurities are effectively intercepted, reducing the number of impurities entering the device from the source and lowering the risk of clogging. The anti-vortex guide hood effectively suppresses vortex generation, ensuring a stable water flow state required for siphon drainage, avoiding siphon interruption due to vortices, and improving drainage efficiency. The rainwater hopper, as the core load-bearing component, organically integrates the anti-vortex guide hood, water inlet grille, anti-clogging cover, and anti-clogging pipe to form a complete preliminary drainage and anti-clogging structure.

The pressure reducing valve comprises a shell and a control body, and a first cavity, a second cavity and a third cavity are formed in the shell; the control body comprises a piston, a connecting rod and a valve element, the piston is arranged in the third cavity and is in sealed sliding connection with the inner wall of the third cavity, one end of the connecting rod is connected with the piston, and the other end of the connecting rod is connected with the valve element which is arranged at the throttling opening; sliding of the piston can drive the valve element to move so as to change the distance between the valve element and the throttling opening, and therefore the opening degree of the throttling opening is adjusted. The invention further provides a depth self-adaptive water inlet device which comprises a pressure reducing valve and a water inlet valve, and the water inlet valve is connected with the outlet. Compared with the prior art, the piston of the pressure reducing valve can move along with the change of the water pressure, so that the valve element is driven to move, the opening degree of the throttling opening is adjusted, and the change of the water pressure and the change of the opening degree of the throttling opening are mutually counteracted; according to the depth self-adaptive water inlet device, stability of water inlet flow can be achieved through self-adaptive adjustment of the pressure reducing valve.

The present invention relates to the technical field of generator set equipment, and discloses a clustered arrangement structure of circulating water supply system buildings, including a cooling water circulation building group, the cooling water circulation building group includes a cooling tower, a water collection tank, a return ditch, a water absorption well and a circulating water pump room, a plurality of cooling towers are provided, and a plurality of cooling towers are connected in a straight line to form a cooling tower row, the cooling tower row is arranged on the water collection tank, and air inlets are provided on both sides of the cooling tower that are relatively distributed along the width direction of the cooling tower row, the water collection tank, the return ditch and the water absorption well are connected in sequence and the water flow direction remains unchanged, the circulating water pump room is located on one side of the length direction of the cooling tower row, the return ditch and the water absorption well are arranged in sequence between the cooling tower row and the circulating water pump room, a circulating water pump is provided in the circulating water pump room, and the water absorption port of the circulating water pump is connected to the water absorption well. The present invention has a reasonable layout, effectively reduces the occupied area without affecting the air intake cooling effect of the cooling tower, saves engineering investment, and maintains the stability of the water flow state in the system.

The present invention relates to an anti-vortex fountain pump, comprising a sleeve, wherein the sleeve is formed by an impeller installation pipe section, a motor installation pipe section, and a 90° bend pipe section in an integrated manner, and the water inlet end of the 90° bend pipe section is downwardly connected with a dispersed water inlet mechanism; a fountain motor is fixedly installed at the central axis position of the motor installation pipe section, the output shaft of the fountain motor extends to the impeller installation pipe section, and a plurality of corresponding impellers are fixedly installed on the output shaft of the fountain motor; a water inlet section is sealed and installed at the end of the output shaft of the fountain motor, and a corresponding flow guide cover is sealed and connected to the outer side of the water inlet end of the water inlet section, and one end of the flow guide cover not connected to the water inlet section is sealed and connected to the junction of the motor installation pipe section and the impeller installation pipe section; the flow cross-sectional area ratio of the 90° bend pipe section, the motor installation pipe section and the impeller water inlet is 14-15:9-10:3-4. The present invention can effectively adapt to shallow pool water and large flow rate without generating vortex.

The utility model relates to a water treatment test device adopting a continuous flow ozone oxidation method. The water treatment test device comprises an ozone generation module, an ozone monitoring module, a water sample pH monitoring and adjusting module, a water inlet module, a gas-water mixed contact reaction module and a tail gas treatment module, the ozone generation module comprises a gas source gas storage bottle and an ozone generator, the ozone monitoring module comprises an ozone concentration meter and a flow meter, the water sample pH monitoring and adjusting module comprises an acid-base storage tank, an electromagnetic valve, a pH meter and a sewage tank, and the water inlet module comprises a peristaltic pump; and the gas-water mixing contact reaction module comprises a contact reaction column. The device can meet the requirements of ozone oxidation tests under different conditions; the contact reaction column is formed by splicing a plurality of sections of short columns and is convenient to disassemble, transport, fill and clean an ozone oxidation reaction catalyst and the like; sewage and ozone are mixed through the titanium alloy aeration head and enter the contact reaction column, the gas-water mixing condition is good, and titanium alloy can resist ozone corrosion; the water sample pH monitoring and adjusting module can facilitate the automation of pH adjustment and improve the efficiency.

The utility model relates to the technical field of rudders, in particular to a well type installation symmetrical propeller which comprises a propeller base, a driving cabin is fixedly installed at the lower end of the propeller base, propeller cabins are symmetrically and fixedly installed on the left side and the right side of the propeller base, a water inlet ring opening is formed between the propeller cabins, and propeller sets are arranged in the middles in the propeller cabins. The propeller sets are arranged on the two sides of the driving cabin. When in use, the sectional area of the channel is reduced through the arc-shaped ring piece, so that the flowing speed for driving water inlet is accelerated, high-pressure water inlet is carried out in cooperation with the water inlet hole and the water inlet ring opening, and then the propelling driving force is increased.

The present application relates to the technical field of guide piers, and discloses a guide pier structure suitable for a short inlet lateral water inlet pump station, which comprises a lateral water inlet channel between a front water inlet pool and a main river channel; the inner side of the lateral water inlet channel is formed into a concave lateral water inlet wall, the outer side is formed into a convex lateral water inlet wall, and the bottom is provided with a water inlet bottom plate; the middle part of the water inlet bottom plate is provided with a plurality of guide piers; the guide piers are provided with water blocking parts and guide parts, and the transverse width of the water blocking parts is greater than that of the guide parts; the water flow entering the lateral water inlet channel from the main river channel is blocked by the water blocking parts of the plurality of guide piers, is divided in the transverse direction, and then passes through a plurality of guide intervals, is buffered and guided to flow by the plurality of guide parts, and is buffered and mixed after passing through the plurality of guide intervals; the flow velocity is uniformly distributed, so that the water flow is formed into a flow state that is smoothed, and the water flow entering the front water inlet pool is stable in the flow state.

The utility model discloses a single-pump temperature-adjusting water dispenser with a heat recovery function, and belongs to the technical field of water dispensers. Comprising a machine body, and a water inlet system, a sleeve type heat exchanger, a heat recovery system, an instant heating body, a temperature adjusting system, a boiled water outlet valve and a water outlet pipe are arranged in the machine body. The instant heating body heats drinking water to be hot boiled water with the temperature of 90 DEG C or above, one water outlet end of the instant heating body is communicated with the water inlet end of the boiled water outlet valve, hot boiled water with the temperature of 90 DEG C or above flows out of the boiled water outlet valve to the water receiving nozzle, and the other water outlet end of the instant heating body is communicated with an inner sleeve water inlet of the sleeve type heat exchanger. Hot boiled water can flow into an inner sleeve of the sleeve type heat exchanger from the water outlet end to be cooled into cold boiled water, the heat recovery system recycles heat of the hot boiled water in the process that the hot boiled water is cooled into the cold boiled water, and the temperature adjusting system mixes the cold boiled water and the hot boiled water in proportion according to the water temperature set by a user and conveys the cold boiled water and the hot boiled water to the water outlet pipe. And accurate regulation and control of the water temperature are realized.

The application discloses a high-temperature gas cooled reactor steam generator steam-water quality control system, which comprises a reactor, a steam generator, a first valve group, a steam turbine, a condenser, a generator set, a second valve group, a third valve group, a water treatment device, a feed water pump, a fifth valve group, a sewage tank, a sixth valve group, a clean water tank and a seventh valve group. The system can guarantee stable operation of the gas cooled reactor in the case of steam generator water supply interruption and reactor shutdown accidents caused by steam-water quality.

The present invention discloses a flow regulating structure and a bubbler, wherein the flow regulating structure comprises a water passing part and an elastic part; the water passing part is provided with a water passing cavity, the top of the water passing cavity is opened at the first end face of the water passing part, and the side wall of the water passing cavity is provided with a plurality of water passing holes along the circumferential direction; the elastic part is provided with a disc-shaped body; the periphery of the disc-shaped body is close to the first end face of the water passing part and shields the water passing cavity, the middle part of the disc-shaped body is provided with a water passing hole connected to the water passing cavity, and the disc-shaped body forms a pressure-bearing part from its periphery to the water passing hole, and the pressure-bearing part is deformed toward the bottom wall of the water passing cavity under the impact of the water flow pressure to adjust the water passing area in the water passing cavity connecting the water channel and the water passing hole. The bubbler comprises the above-mentioned flow regulating structure. The flow regulating structure has a simple structure and is easy to install, and compared with the prior art, it has the advantages of not easy to age, not easy to relax elasticity, and easy to control hardness.

The table type water purifying and drinking machine comprises a machine body and a pure water kettle, a kettle placing position is arranged on the outer side of the machine body, the pure water kettle is arranged in the kettle placing position in a removable mode, and a pure water preparing structure used for preparing pure water and a water level communicating pipe used for measuring the water level of the pure water kettle are arranged in the machine body. The table type water purifying and drinking machine further comprises a waterway adapter used for communicating the pure water preparing structure with the pure water kettle, the waterway adapter is provided with a water inlet pressure stabilizing cavity, a pure water inlet, a kettle communicating opening and a communicating pipe outlet, the pure water inlet, the kettle communicating opening and the communicating pipe outlet are communicated with the water inlet pressure stabilizing cavity, the pure water inlet is communicated with the pure water preparing structure, and the kettle communicating opening is communicated with the pure water kettle. The communicating pipe outlet is communicated with the water level communicating pipe. Due to the existence of the water inlet pressure stabilizing cavity, the flow speed and pressure of pure water entering from the pure water inlet can be well stabilized, pressure stabilization and flow speed stabilization are achieved, water pressure in the pure water kettle and the water level communicating pipe can be balanced, and the accuracy of water level detection in the pure water kettle through the water level communicating pipe is effectively improved.