107results about How to "Reduce cavitation" patented technology

The invention provides swimming pool cleaning equipment, and relates to the technical field of swimming pool cleaning. The swimming pool cleaning equipment comprises a base body which comprises a bottom face and a containing cavity, and a liquid inlet communicated with the containing cavity is formed in the bottom face. And the rolling brush is rotationally connected with the base body, and the rolling brush and the liquid inlet are arranged in a spaced mode in the advancing direction of the swimming pool cleaning equipment. And the turbidity detection device is arranged on the bottom surface of the base body, is positioned between the liquid inlet and the rolling brush, and is used for detecting the turbidity of the liquid. In the advancing direction of the swimming pool cleaning equipment, the distance between the turbidity detection device and the central axis of the liquid inlet is a first distance, the minimum distance between the turbidity detection device and the rotating central axis of the rolling brush is a second distance, and the first distance is larger than the second distance. According to the swimming pool cleaning equipment provided by the embodiment of the invention, the turbidity of the liquid can be accurately measured, so that the swimming pool cleaning equipment can more intelligently plan a cleaning path, key areas are ensured to be fully cleaned, unnecessary repeated cleaning is reduced, and then the cleaning efficiency is improved.

The invention discloses homogeneous stirring equipment for preparing cold water fish feed grease, and relates to the technical field of stirring, and the homogeneous stirring equipment comprises a bin body mechanism. According to the homogenizing and stirring equipment for preparing the cold water fish feed grease, through the design of the bin body mechanism, materials enter from the top of the processing mechanism, circulate and enter the bin body shell, then a motor is started, a central rotating shaft is controlled by the motor to rotate, and the interiors of the materials are rotated by paddle plates, so that the effect of mixing the materials is achieved; through the design of the multiple paddle plates, the stirring range is enlarged, the mixing efficiency is improved, the uniform mixing effect is achieved, the paddle plate grooves are formed, the rotating efficiency is improved through the grooves, the grooves can disturb boundary layers on the surfaces of the paddle plates, resistance is reduced, the flowing efficiency of fluid is improved, and therefore the stirring effect of the paddle plates in the fluid is enhanced; cavitation and cavitation phenomena are reduced, the possibility of generating cavitation and cavitation under high-speed movement is reduced, and the service life of the paddle board is prolonged.

The utility model discloses an anti-cavitation device and a fluorine pump air conditioning system.The anti-cavitation device is used for the fluorine pump air conditioning system and comprises a bypass pipeline, and one end of the bypass pipeline is connected with an outlet of a fluorine pump of the fluorine pump air conditioning system; and the other end of the connecting pipe is connected to a reflux inlet of a liquid storage tank of the fluorine pump air-conditioning system or connected to a liquid storage tank inlet pipe of the liquid storage tank. According to the anti-cavitation device and the fluorine pump air-conditioning system, the bypass pipeline is arranged between the fluorine pump outlet of the fluorine pump air-conditioning system and the liquid storage tank, and the refrigerant flows back into the liquid storage tank from the fluorine pump outlet by utilizing the high pressure of the fluorine pump outlet, so that the refrigerant in the liquid storage tank is not gasified due to the fact that the pressure in the liquid storage tank is not easy to drop quickly; therefore, the cavitation phenomenon of the fluorine pump can be reduced, the cutoff resistance and the cavitation resistance of a fluorine pump refrigerating circuit are greatly improved, the operation efficiency of the fluorine pump is improved, and the service life of the fluorine pump is long.

The invention provides a double-row low-temperature safety valve and relates to the technical field of safety valves, the double-row low-temperature safety valve comprises a main valve body, a valve cover and a pilot valve assembly, an inlet runner and an outlet runner are arranged in the main valve body, a guide sleeve is arranged in the main valve body, a first valve element is arranged in the guide sleeve in a sliding mode, and a valve seat is arranged in the main valve body; a first sealing piece is arranged at the lower end of the first valve element, a medium containing cavity is formed between the first valve element and the valve deck and located in the guide sleeve, the pilot valve assembly is communicated with the medium containing cavity and the inlet flow channel, and the first sealing piece and the valve seat can elastically deform. The medium containing cavity is filled with media to form pressure towards the valve seat on the first valve element, so that the first sealing piece extrudes the valve seat. According to the safety valve, the first valve element and the valve seat can both deform, the sealing performance of the valve seat and the first valve element under the low-temperature working condition is guaranteed, and the sealing performance between the first valve element and the guide sleeve is remarkably improved.

The embodiment of the invention provides instruction processing equipment, system and method, the equipment comprises an instruction fetching module, a decoding module and an execution module, the instruction fetching module is used for obtaining original instruction data, and performing length segmentation and pre-decoding processing on the original instruction data to obtain target instruction data; the decoding module is used for reading the target instruction data from the instruction fetching module and performing full decoding processing on the target instruction data to obtain instruction information; and the execution module is used for acquiring the instruction information from the decoding module, determining an existence result of the data dependency relationship according to the operand information, determining an execution unit in the execution module according to the instruction type, the existence result and the operand information, and executing operation processing in the execution unit to obtain an execution result. The equipment can distribute more execution resources for performance key instructions, the execution resources are dispersed to each assembly line level, the cavitation phenomenon is reduced, complex instructions are distributed to different assembly line levels, and the working efficiency of a processor is improved.

The present application discloses a vibration reduction and noise reduction device for a fixed conical valve, which relates to the technical field of valves and is arranged on a fixed conical valve. The vibration reduction and noise reduction device includes a first air supply component and a plurality of second air supply components. An annular negative pressure zone is formed in the cavity on the side of the valve body close to the water outlet pipe; the first air supply component includes a plurality of air supply pipes, which are located on the outside of the guide cover, one end of which is fixedly connected to the peripheral side of the guide cover and communicated with the cavity, and can replenish gas to the position of the peripheral side of the valve body in the cavity; the second air supply component includes a plurality of air supply structures, one end of which passes through the water outlet pipe, passes through the interior of the water outlet pipe, is located in the negative pressure zone and communicates with the cavity. The present application can effectively weaken the cavitation phenomenon, thereby effectively reducing the impact of the cavitation phenomenon and reducing the vibration and noise caused by it.

The invention discloses a rotary motor starting control system and method, which can realize real-time matching of pump output flow and rotary motor demand flow in a rotary starting process and solve the problem of secondary acceleration or overflow loss and heating caused by mismatching of the pump output flow and the motor demand flow in the rotary starting process. Furthermore, the output flow of the pump is controlled to be transited at the acceleration tail end, so that the problems of overspeed and air suction of the motor when the acceleration tail end is rotationally started are prevented. The structure of the overflow valve of the rotary motor is optimized, the taper angle is reduced, the pressure is kept stable under the smaller overflow amount, the flow needed in the rotary starting process is further reduced, the energy-saving effect is improved, and the problems of energy loss and heating caused by overflow are solved.

The utility model discloses an integrated type swing cycle pump lubricating device, including pump casing, inner rotor and outer rotor, be provided with oil cavity and with oil inlet and oil outlet of oil cavity communication on the pump casing, its characterized in that, the bottom of oil cavity is provided with annular unloading groove with oil outlet communication, and the bottom surface of annular unloading groove is multistage step surface. This integrated type swing cycle pump lubricating device can effectively buffer fluid resistance and pulsation, reduce cavitation and cavitation erosion phenomenon, and stabilize oil pressure of oil outlet.

The utility model relates to the field of pumps, in particular to an anti-cavitation device which comprises an outer ring and an inner ring which are coaxially arranged, a backflow channel allowing media to flow back is formed between the outer ring and the inner ring, and the tail end of the outer ring is bent inwards in the radial direction to form an inverted-hook-shaped guide ring in the backflow direction of the backflow channel. The bending direction of the guide ring is opposite to the backflow direction of a medium in the backflow channel, and a gap exists between the tip end of the guide ring and the tail end of the inner ring so that the medium in the backflow channel can be discharged. According to the centrifugal pump, the cavitation phenomenon of the centrifugal pump is greatly reduced, and the stability of the centrifugal pump during operation is improved. The utility model further provides the centrifugal pump.

The invention provides a propeller structure capable of delaying cavitation, and relates to the technical field of propellers, the propeller structure comprises a propeller blade, and a plurality of wedge blocks are arranged on the surface of the upper end of the propeller blade; the radial mounting range of the wedge-shaped blocks is as follows: 2-4 wedge-shaped blocks are arranged in the cavitation area of the propeller blade; the chordwise mounting range of the wedge-shaped block is 60%-80% of the thickness of the propeller blade from the guide edge to the mounting position; the mounting direction of the wedge-shaped block is as follows: the tip part is close to the guide edge of the propeller blade, the length edge is along the section of the propeller blade, the wedge-shaped block is vertically mounted on the surface of the propeller blade, the width of the wedge-shaped block is 20%-30% of the thickness of the propeller blade at the mounting position, the length of the wedge-shaped block is 60%-80% of the thickness of the propeller blade at the mounting position, and the thickness of the wedge-shaped block is 2%-3% of the thickness of the propeller blade at the mounting position. The method mainly aims at the shape, the installation number and the installation positions of the wedge-shaped blocks, and the effect of delaying cavitation is achieved under the condition that the performance of the propeller is affected as little as possible.

The utility model discloses a multi-stage liquid inlet mechanism of an immersed type liquid hydrogen pump. The multi-stage liquid inlet mechanism comprises a pump body and a piston installed in the pump body in a sliding mode. The hydraulic pump is characterized by further comprising a liquid inlet mechanism arranged on the pump body and the piston, and the liquid inlet mechanism comprises a multi-stage liquid inlet cavity formed in the pump body, a partition plate arranged on the piston and located in the multi-stage liquid inlet cavity and a floating plate movably connected to the piston. Through the arrangement of the multi-stage liquid inlet mechanism, liquid hydrogen is subjected to multi-stage compression before entering the liquid hydrogen pump and being compressed by the piston, so that the pressure of the liquid hydrogen is improved, the supercooling temperature point of the liquid hydrogen is improved, the liquid hydrogen is far away from a gas phase saturation point, the cavitation phenomenon is reduced, the filling rate of liquid entering a piston cavity is improved, and the liquid inlet efficiency is improved; therefore, the compression efficiency is improved.

According to the double-suction centrifugal fire pump with the low cavitation performance, a flow guide cone is installed in the middle of the inner side wall of a volute, and the flow guide cone is formed by intersecting a first flow guide cone plane and a second flow guide cone plane; an inlet turbulence device of a fish-like skeleton structure is arranged on the outer side wall of the volute, the inlet turbulence device is located in the shell inlet section flow channel, the inlet turbulence device comprises a plurality of turbulence guide vanes, the turbulence guide vanes are of an arc plate structure, and the arc lengths of the turbulence guide vanes are gradually increased in the water flow direction; a plurality of auxiliary jet holes are symmetrically formed in the wall surface, close to the shell inlet section runner side, of the volute; the blade pressurizing part is of a sharp-corner-shaped structure, and the sharp-corner part of the blade pressurizing part and the sharp-corner part of the flow guide cone are arranged in a staggered mode in the axial direction. Due to the fact that the structure of the fire pump is improved, the effects of eliminating humps, reducing cavitation, being good in stability, low in vibration, high in reliability and the like are achieved, and working condition performance and operation efficiency are improved.

The present invention relates to an integral high-pressure and ultra-large flow hydraulic distributing valve, comprising a valve body, wherein a stepped groove is provided in the valve body, which is located at the same hole center and has a decreasing aperture from top to bottom, the bottom of the stepped groove is connected to the liquid inlet through hole, and the suction valve seat, suction valve core, extrusion valve seat, extrusion valve core and extrusion valve stopper that contact and cooperate with each other are arranged in sequence upward along the bottom of the stepped groove, and the extrusion valve stopper is connected to the liquid discharge through hole. The present invention has a compact and reasonable structure and is easy to operate. By adopting a flat valve structure, the lower part of the suction valve core has a parabolic structure, which is conducive to reducing valve port cavitation. The suction valve and the extrusion valve are both designed with a low-friction anti-rotation structure, which solves the problem of the valve core rotating when impacted by high-speed uneven fluid; the extrusion valve seat is provided with an oblique counter-impact structure, and the impact energy of the fluid is dissipated through the oblique counter-impact structure, thereby reducing the impact of the fluid on the valve core and enhancing the operating stability of the distributing valve.

The application relates to the technical field of preventing pump cavitation, and particularly relates to a device for preventing pump cavitation, which comprises a base, a pump shell mounted on the base, a lower shell body located on the base, an upper shell body detachably mounted on the lower shell body, and a cavitation-preventing mechanism connected with the lower shell body and the upper shell body and communicated with the pump shell, wherein the cavitation-preventing mechanism comprises a defoaming assembly and a cooling assembly; the defoaming assembly is located in the upper shell body, the cooling assembly is located in the lower shell body and connected with the upper shell body, and the cooling assembly is also communicated with the pump shell. The device for preventing pump cavitation has a novel structure, can reduce the cavitation phenomenon, prolong the service life of equipment and provide convenience for workers.

This application relates to the field of vacuum pumps, and more particularly to a vacuum pump drainage device, comprising a vacuum pump, a return water pump, and a return water well. The vacuum pump, the return water pump, and the return water well are sequentially connected via a return water pipe. Multiple vacuum pumps are provided, and at least one water collection tank is provided between each vacuum pump and the return water pump. The end of the water collection tank closest to the vacuum pump is open, and the height difference between the bottoms of two adjacent water collection tanks is 10-20 cm. This application has the effect of ensuring smooth water return from the vacuum pump and eliminating air trapped in the return water pipe.

The application discloses a flow-adjustable multi-stage throttling device and application thereof, wherein the device comprises a front flange pipeline, a flow-adjustable component and a rear flange pipeline, and the front flange pipeline and the rear flange pipeline are tightly connected; the flow-adjustable component comprises a plurality of adjustable orifice plate assemblies arranged in the inner cavity of the flange pipeline formed by the front flange pipeline and the rear flange pipeline; each adjustable orifice plate assembly comprises a sealing cover plate, a bottom plate, an adjusting rod, a rotating disc and a driver; the adjusting rod is arranged in the mounting hole of the bottom plate, the rotating disc is mounted on the bottom plate, the driver is mounted on the sealing cover plate, and the throttling hole of the sealing cover plate and the throttling hole of the bottom plate are communicated to form a throttling window; the driver is used for driving the rotating disc to rotate when rotating; the rotating disc is used for driving the adjusting rod to enter or exit the throttling window through the rotating wheel, so that the effective throttling area of the throttling window is changed. The application can actively and low-noise adjust the flow under different working conditions.

The present invention provides a double-suction centrifugal fire pump with low cavitation performance. A guide cone is installed in the middle of the inner wall of the volute. The guide cone is formed by the intersection of a first guide cone plane and a second guide cone plane. An inlet turbulence device with a fish skeleton structure is arranged on the outer wall of the volute. The inlet turbulence device is located in the flow channel of the inlet section of the shell. The inlet turbulence device includes a plurality of turbulence guide vanes. The turbulence guide vanes are in an arc plate structure. The arc length of the turbulence guide vanes gradually increases along the water flow direction. A plurality of auxiliary jet holes are symmetrically arranged on the wall surface of the volute near the flow channel side of the inlet section of the shell. The blade booster part is in a pointed angle structure. The pointed angle of the blade booster part and the pointed angle of the guide cone are staggered in the axial direction. Due to the improvement of the fire pump structure, the hump is eliminated, cavitation is reduced, stability is good, vibration is low, reliability is high, and the working performance and operation efficiency are improved.

The application discloses a flood releasing device for hydraulic engineering, which comprises a flood releasing base, a water retaining wall and a flood releasing gate, a flood releasing groove is formed in the flood releasing base, the flood releasing gate is arranged on one side of the flood releasing groove, the flood releasing gate comprises a gate, a portal frame, a screw rod, a driving assembly and a hand wheel, a flood releasing hole is formed in the gate, the portal frame is fixedly arranged on the top of the flood releasing base, a sliding groove is formed in the portal frame and the flood releasing base, and the gate is slidably connected with the sliding groove. The flood releasing device for hydraulic engineering integrates a separate opening and closing assembly on the main gate, when only small flow needs to be released, the heavy main gate does not need to be driven, and only by controlling the opening degree of the cover gate, stepless and fine adjustment of the flow can be realized, the operation response is fast, the energy consumption is low, when large flow needs to be released, the cover gate can be closed first, then the main gate is lifted, full opening degree flow releasing is realized, and the flexibility and working condition adaptability of the flood releasing operation are enhanced.

The utility model discloses a gas blocking device of a large horizontal furnace, and belongs to the technical field of carbon-based material high-temperature heat treatment equipment. Comprising a top splicing track, a bottom splicing track and a plurality of gas baffles, the bottom splicing track and the top splicing track are arranged in the axial direction of a furnace body of the horizontal furnace, the bottom splicing track is connected to the bottom of a thermal field in the horizontal furnace, the top splicing track is connected to the top of the thermal field in the horizontal furnace, and the multiple gas blocking plates are inserted between the top splicing track and the bottom splicing track and sequentially spliced to form the whole gas blocking structure. The spliced gas baffle shields a heating structure fixed on the side wall of the horizontal furnace; according to the utility model, cavitation caused by process gas to conductive carbon materials such as a graphite heater in the furnace in the high-temperature heat treatment process of the carbon-based material is reduced, and the service life of the thermal field material is prolonged.

The invention provides a high-pressure common-rail oil injector control valve and a cavitation suppression design method thereof. The high-pressure common-rail oil injector control valve comprises a control valve shell and a valve rod. A control cavity and a mounting cavity are formed in the control valve shell; the control cavity is communicated with the rail pipe through the oil inlet hole; a first pore plate and a second pore plate which are in close contact with each other are sequentially and coaxially arranged in the mounting cavity from top to bottom; the peripheral edges of the first pore plate and the second pore plate are in close contact with the inner wall of the mounting cavity; a discharge hole is formed in the first pore plate; a ball valve cavity, a flow guide hole, an oil outlet hole and a middle cavity which are communicated with one another are sequentially formed in the second pore plate from top to bottom; the middle cavity is communicated with the control cavity; the discharge hole is communicated with the ball valve cavity; a sealing steel ball is fixedly arranged at the bottom end of the valve rod; the valve rod penetrates through the first hole plate to enter the ball valve cavity, and the sealing steel ball is located above the flow guide hole and matched with the conical wall face of the ball valve cavity. The cavitation strength of the sealing surface of the ball valve is reduced, and the service life of the oil injector control valve is prolonged.

The embodiment of the present invention provides a branch prediction method, a processor and an electronic device, which are applied to a binary translation system, wherein the binary translation system is used to translate a source program in a client into a target program in a host machine, and the method comprises: when it is determined that the source program to be translated meets a preset condition, obtaining an auxiliary jump instruction and a jump instruction; wherein the jump instruction and the auxiliary jump instruction are corresponding instructions of the host machine; the auxiliary jump instruction comprises an operand, and the operand is determined according to the predicted jump address of the client in the source program to be translated; executing the auxiliary jump instruction to modify the predicted jump address generated when the jump instruction is executed according to the operand; wherein the auxiliary jump instruction is executed earlier than the jump instruction. The embodiment of the present invention can effectively reduce the bubbles generated by continuous jumps in the target program, which is beneficial to improving the prediction rate of the branch predictor and the operating efficiency of the binary translation system.

The utility model provides a water pump head and a water pump water tank, the water pump head is provided with a water inlet and a water outlet, the water pump head is internally provided with a water inlet flow channel communicated with the water inlet, a rotary flow channel communicated with the water inlet flow channel and a water retaining wall separating the water inlet flow channel from the rotary flow channel, and the center of the water pump head is provided with a pump cavity water inlet. The pump head of the water pump is arranged on the water pump, the water inlet is arranged on the side of the pump head of the water pump, the water inlet is connected with the water inlet flow channel, the water inlet flow channel is a straight hole, the water retaining wall is arranged between the water inlet flow channel and the rotating flow channel, and the water retaining wall is arranged in front of the water inlet, so that water entering at a high speed does not form vortexes any more.

The utility model discloses an axial flow water turbine water guide mechanism which comprises an upper ring seat (1) and a lower ring seat (2), a plurality of guide vanes (3) are arranged between the upper ring seat (1) and the lower ring seat (2), rotating shafts (4) are arranged in the middles of the upper ends and the lower ends of the guide vanes (3), driving rings (5) are connected to the upper ring seat (1) in a rotating mode, servomotors (6) are connected to the driving rings (5), and the servomotors (6) are connected to the driving rings (5). The upper ends of the rotating shafts (4) are connected with the driving ring (5) through a first connecting rod (7) and a second connecting rod (8), and a linkage mechanism connected with the lower ends of all the rotating shafts (4) is arranged at the bottom of the lower ring seat (2); the linkage mechanism comprises a plurality of adapter plates (9), the adapter plates (9) are fixed to the lower ends of the rotating shafts (4) respectively, third connecting rods (10) are arranged between the adjacent adapter plates (9), and the third connecting rods (10) are hinged to the adapter plates (9). The utility model has the advantage of low maintenance frequency.

The fire pump comprises a volute, an impeller and a rotating shaft, the volute comprises a front side wall, an inlet pipe and a pumping chamber, and the impeller comprises a front cover plate, a rear cover plate, blades and an inlet ring; the device is characterized in that an adjusting ring is arranged on the peripheral face of the inlet ring, the adjusting ring is rotatably arranged relative to the inlet ring, the adjusting ring comprises a ring body, first guide vanes and first communicating holes, the first guide vanes are arranged on the peripheral face of the ring body, the multiple first guide vanes are evenly distributed in the circumferential direction, and the left end face of the inlet ring is connected with an end cover ring through a connecting piece; a second communicating hole is formed in the inlet ring and formed in the right side of the adjusting ring. The adjusting effect on unsteady flow and pressure pulsation at the inlet of the fire pump can be improved, the cavitation performance and inlet secondary flow can be reduced, and therefore the small-flow hump phenomenon can be improved or eliminated, and the hydraulic performance and operation stability of the fire pump are improved.

The application discloses a servo cut-off valve group, which comprises a first valve body and a second valve body integrated on a valve seat. Both the valve bodies are provided with valve cavities, and the valve cavities are internally provided with valve spools driven by a servo motor through a screw rod. The valve bodies are provided with outer ring channels communicated with inlet and outlet of the valve seat on the side surfaces, the outer ring channels are communicated with the valve cavities through a plurality of uniformly distributed lateral flow channels, and the inner walls of the valve cavities are further provided with inner ring channels. The longitudinal flow channels at the bottoms of the two valve cavities are communicated with each other through channels in the valve seat. When the two valve spools synchronously rise above the lateral flow channels, fluid can sequentially pass through the flow channels, and the valve is opened; when the two valve spools synchronously descend to completely cover the lateral flow channels, the valve is closed. The two valve cavities are communicated at the bottoms to form a pressure balance cavity, so that the valve spools are hardly subjected to axial thrust when the valve is closed, and high pressure is converted into sealing force in the radial direction of the valve spools, thereby fundamentally solving the high pressure leakage problem of traditional cut-off valves, and the application is especially suitable for high pressure equipment such as filter presses.

The present invention relates to a blowdown steam recovery system for a multi-pressure boiler. The present invention comprises a high-pressure steam drum, a medium-pressure steam drum, a low-pressure steam drum, a medium-pressure continuous expansion tank, a low-pressure continuous expansion tank, and a timed blowdown expansion tank. The high-pressure steam drum is connected to the medium-pressure continuous expansion tank through a high-pressure continuous blowdown pipeline. The medium-pressure continuous expansion tank is connected to the low-pressure continuous expansion tank through a first regulating valve and is connected to the medium-pressure steam drum through a first check valve. The medium-pressure steam drum is connected to the low-pressure continuous expansion tank through a medium-pressure continuous blowdown pipeline. The low-pressure continuous expansion tank is connected to the timed blowdown expansion tank through a second regulating valve and is connected to the low-pressure steam drum through a second check valve. The low-pressure steam drum is connected to the timed blowdown expansion tank through a low-pressure continuous blowdown pipeline. The present invention realizes step-by-step flash evaporation of the blowdown steam of the high-pressure steam drum in the medium-pressure continuous expansion tank and the low-pressure continuous expansion tank by adding a medium-pressure continuous expansion tank, thereby greatly improving the thermal efficiency of recovering and utilizing the blowdown steam.

The utility model relates to the technical field of sewage treatment, in particular to an anti-blocking type vertical lift pump based on computer intelligent control, which comprises a water inlet pipe, an electric control box for controlling the cross section area of the water inlet pipe, a volute chamber for pressurizing sewage and conveying the sewage to a high place, and a motor for providing power, the water inlet pipe comprises a rotating shaft for preliminarily crushing blockages, a sealing ring for preventing water leakage and a sewage collecting box for intensively recycling the blockages, the top of the water inlet pipe is connected with the volute chamber, the electric cabinet is arranged on the outer surface of the water inlet pipe, the motor is mounted at the top of the volute chamber, and the rotating shaft is mounted at the center of the water inlet pipe and penetrates through the volute chamber to coaxially rotate with the motor; the sealing ring is arranged at the joint of the electric cabinet and the outer surface of the water inlet pipe. The electric control box is used for controlling the section of the pipeline and adjusting the flow of the pipeline to achieve the optimal pollution discharge effect, part of sewage and waste are recycled through the pollution collection box, waste accumulation is reduced, cavitation of the pump is slowed down through the flow channel type impeller, and the maintenance period is effectively prolonged.

This invention provides a server liquid cooling pump, which has the advantages of self-heating using liquid medium, high pump reliability and long service life, self-balancing pump chamber pressure difference, and near-zero leakage risk. Its structure includes a pump casing, a stator-rotor assembly, and an impeller. The stator-rotor assembly is installed inside the pump casing and drives the impeller to rotate, causing the liquid medium to flow within the flow channel. A cooling channel is also provided inside the pump casing, communicating with the flow channel. The liquid medium can enter the cooling channel and immerse the stator-rotor assembly in the liquid medium, thereby dissipating heat from the stator-rotor assembly.

The invention provides a method and a device for reducing RAM (Random Access Memory) frequency in FIFO (First In First Out), a terminal and a medium. The method comprises the following steps: caching wdata into a register reg0 and a register reg1 by using ping-pong operation; the cache data in the register reg0 and the register reg1 are spliced at the rising edge of the slow clock frequency to obtain spliced data with the data bit width being two times of the wdata data, and the spliced data are stored in a register regslowin; and the spliced data in the register (regslowin) is stored in the FIFO Memory (First In First Out Memory). According to the method and device for reducing the RAM frequency in the FIFO, the terminal and the medium, ping-pong buffering can be carried out in a fast clock domain, data splicing is carried out in a slow clock domain, the data are stored in the FIFO, and the problem that the FIFO design rate is not matched with the RAM rate is ingeniously solved.

The tensioning hydraulic cylinder assembly comprises a hydraulic cylinder and an energy accumulator, an oil port in the lower end of the hydraulic cylinder is communicated with a liquid port in the lower end of the energy accumulator, the hydraulic cylinder and the energy accumulator are fixed together, the hydraulic cylinder is a plunger hydraulic cylinder with the double-acting characteristic, the energy accumulator is a piston-free type energy accumulator, and the energy accumulator is a piston-free type energy accumulator. And a bubble reduction structure is detachably connected in the energy accumulator and is used for reducing gas dissolved in the hydraulic oil so as to reduce cavitation of the gas to the hydraulic element. The hydraulic cylinder is a plunger hydraulic cylinder with the double-acting characteristic, the advantages of stability and sealing reliability of the double-acting hydraulic cylinder are kept, the hydraulic cylinder has the advantages of the plunger hydraulic cylinder, and multiple problems of an existing tensioning hydraulic cylinder assembly in selection of the plunger hydraulic cylinder and the double-acting hydraulic cylinder are solved; according to the tensioning hydraulic cylinder assembly, the bubble reduction structure is arranged in the energy accumulator, so that the problem of air cavitation existing in an existing tensioning hydraulic cylinder assembly is solved, and cavitation of components is greatly reduced.