103 results about "Reciprocating flow" patented technology

The invention relates to the technical field of axial flux motors, in particular to a stator cooling structure, a stator assembly and an axial flux motor, the stator cooling structure comprises a shell and a partition plate, the shell is internally provided with a cooling cavity for accommodating a plurality of stator units, and the shell is connected with an inlet for inputting a cooling medium and an outlet for outputting the cooling medium; the partition plate is connected into the shell and divides the cooling cavity into a first cavity and a second cavity in the thickness direction. The partition plate is provided with a first via hole matched with the stator unit and a plurality of channels communicated with the first cavity and the second cavity, and reciprocating flow of a cooling medium between the first cavity and the second cavity is achieved through the channels. The stator heat dissipation effect can be improved, and local high temperature in the stator is prevented.

The invention belongs to the technical field of valve element polishing, and particularly relates to a multi-station valve element deburring device and a process thereof.The device comprises a first extrusion unit, a second extrusion unit and a third extrusion unit, the first extrusion unit comprises a first cavity and a first push head, the first cavity is used for containing semi-fluid abrasive materials, and the first push head is movably arranged in the first cavity in the vertical direction; the second extrusion unit comprises a second cavity used for containing the semi-fluid abrasive and a second push head movably arranged in the second cavity in the vertical direction. The clamp assembly is provided with a plurality of cavities used for containing the valve elements. A first non-return mechanism and a second non-return mechanism are respectively arranged at the upper end and the lower end of the cavity; the first non-return mechanism and the second non-return mechanism are arranged at the two ends of the cavity, the variable runner design of the semi-fluid abrasive is achieved, the semi-fluid abrasive always flows to the outer side from the inner side of the side hole of the valve element in the reciprocating flowing process, then the grinding efficiency of burrs on the inner side of the side hole is improved, the equipment energy consumption and the production cost are reduced, and the product quality is improved. And the production efficiency is improved.

The invention provides an innovative design of a corrugated pipe damper integrated on a sliding main bearing aiming at the problems of transmission system abrasion and fatigue damage caused by vibration energy accumulation of the wind power main bearing under a complex wind load, and belongs to the technical field of wind power generation equipment. A traditional main bearing damping structure is low in energy absorption efficiency, insufficient in dynamic response and difficult to effectively suppress vibration. Through collaborative design of a corrugated pipe multi-stage laminated structure and a fluid energy dissipation channel, a composite mechanism for dynamically dissipating vibration energy is formed. The core of the damping device is composed of a corrugated pipe assembly, damping cavities and a main shaft adaptive structure, impact energy is absorbed through axial flexible deformation of the corrugated pipe, vibration attenuation is achieved in combination with reciprocating flowing of damping fluid in the multiple cavities, and low-frequency swing and high-frequency harmonic waves of a main bearing are synchronously restrained. According to the design, the bearing capacity is guaranteed, vibration transmission is remarkably reduced, the service life of the main bearing is effectively prolonged, the operation reliability of a unit is improved, and the damping requirement of a core transmission system of a high-power wind turbine generator is met.

The invention relates to the technical field of ethylene tar stabilizer detection, in particular to a viscosity detection device for an ethylene tar stabilizer, which comprises a frame body and a transparent plate fixedly connected to the frame body in a penetrating manner, a console is fixedly connected to the frame body, a mounting rack is rotatably connected to the frame body, and a capillary viscometer is fixedly connected to the mounting rack. A right air cylinder is started to drive a right hollow blocking block to move through a fixing plate to block an air inlet pipe, then a driving motor is started, the hollow blocking block carries out suction treatment on the interior of the air inlet pipe, and a cleaning agent continuously flows in a reciprocating mode to clean the interior of the capillary viscometer; meanwhile, the middle air cylinder and the left air cylinder are started in sequence to enable the rubber sleeve and the left hollow blocking block to block the capillary viscometer, so that a cleaning agent in the capillary viscometer can be automatically sucked to complete comprehensive cleaning, a person does not need to cooperate with an ear washing bulb for cleaning, the operation is convenient, and the working efficiency is improved. Therefore, the subsequent detection efficiency of the viscosity of the ethylene tar stabilizer is improved.

The invention relates to the technical field of transformer vibration monitoring, in particular to a device and method for achieving passive monitoring of a transformer operation state through magnetofluid vibration energy capture. Magnetic fluid flows back and forth to cut a magnetic field to generate electricity, self-powered monitoring is achieved, and dependence of an external power source is avoided; the three groups of coils (1000 / 800 / 600) with gradually reduced turns cooperate with the Halbach permanent magnet, and cover the full-band vibration of 50-2500Hz, thereby breaking through the band limitation of the traditional sensor combination; the host dynamically selects the coil according to the vibration frequency, impedance matching optimization is ensured, and the energy conversion efficiency is improved to 32% and is improved by 5 times compared with a traditional scheme; meanwhile, faults such as iron core looseness and winding deformation are directly diagnosed through induction current characteristics, and the detection sensitivity reaches 0.1 mm displacement (iron core looseness) and 5% turn-to-turn short circuit (winding deformation).

The invention discloses a non-contact mechanical sealing device for a rolling bearing, and relates to the technical field of non-contact sealing, the non-contact mechanical sealing device comprises a sealing end shell, a mounting flange, a connecting end shell and a rotating shaft, the sealing end shell is internally provided with a sealing mechanism for realizing sealing of a connecting structure of the sealing end shell and the rotating shaft; a lubricating mechanism for promoting liquid in the sealing end shell to flow back and forth is arranged on the side face of the sealing mechanism. An outer liquid sealing mechanism used for supplementing lubricating oil in the sealing end shell in real time is installed on the front side of the sealing end shell, and a liquid conveying port is formed in the outer surface of the outer liquid sealing mechanism. The sealing mechanism comprises an inner sealing ring, an annular sealing structure is additionally arranged at the joint of the side face of the sealing end shell and the rotating shaft through the side sealing ring groove and the side wedge ring, a multi-stage sealing defense line is formed by the annular sealing structure and a main sealing interface, and the overall sealing reliability between the inner wall of the sealing end shell and the rotating shaft in the axial direction and the radial direction is further improved.

The utility model belongs to the technical field of batteries, and discloses a battery thermal management system based on a reverse flow type liquid cooling plate, which is arranged at the bottom of a battery cell module and comprises a liquid cooling plate assembly, a temperature sensing system and a reversing controller, the temperature sensing system is arranged on the liquid cooling plate assembly and is used for monitoring the temperature difference of a cooling liquid inlet and a cooling liquid outlet; the reversing controller is connected with the liquid cooling plate assembly, the reversing controller is used for controlling the flowing direction of cooling liquid in the liquid cooling plate assembly, and the temperature sensing system is in electric signal connection with the reversing controller and is used for sending an instruction to enable the reversing controller to control reversing flowing of the cooling liquid. By arranging the temperature sensing system and the reversing controller, the bidirectional flow of the cooling liquid in the liquid cooling plate can be realized, the temperature difference between the front and back of the flow channel is reduced through reciprocating flow, and the temperature consistency of the battery cell is ensured.

The invention discloses a modularized magneto-rheological shock absorber with asymmetric damping force. The modularized magneto-rheological shock absorber comprises a main cylinder barrel assembly and an external cylinder barrel assembly. The main cylinder barrel assembly comprises a main cylinder barrel body and a first-stage piston, the first-stage piston is arranged in the main cylinder barrel body in a controllable and sliding mode, and the main cylinder barrel body is filled with magnetorheological fluid; the external cylinder barrel assembly comprises an external cylinder barrel body and a second-stage piston installed in the external cylinder barrel body. The two axial ends of the external cylinder barrel body communicate with the main cylinder barrel body and are correspondingly located on the two sides of the sliding direction of the first-stage piston correspondingly. The magnetorheological fluid can flow between the main cylinder barrel body and the external cylinder barrel body in a reciprocating mode along with sliding of the first-stage piston. Through modularization and innovation of asymmetric damping force output, the manufacturing cost is remarkably reduced, the production efficiency and the working stability are improved, meanwhile, the flexibility and the adaptability of the damper are greatly enhanced, and powerful support is provided for wide application and further development of the magnetorheological damping technology.

The invention discloses a cold plate-based battery thermal management system and an operation control method thereof. The system comprises a plurality of battery units, two liquid cooling plates and a filling material, the battery units are vertically arranged between the two liquid cooling plates; and the filling material is embedded among the battery units. According to the operation control method, the temperature field of the battery unit is monitored in real time, and the flow direction of the cooling liquid in the liquid cooling plate is dynamically adjusted according to the temperature difference of the battery pack and the highest temperature monitoring result, so that more low-temperature cooling liquid can be guided to the area of the battery unit with higher temperature. Compared with traditional fixed-period reciprocating flow, the battery thermal management system based on the cold plate and the operation control method of the battery thermal management system achieve lower battery pack temperature difference and better battery pack temperature uniformity under the condition that the reversing times of cooling liquid are the same, so that the service life of the battery pack is prolonged, and the performance of the battery pack is improved; the method has the advantages of simple operation, good adaptability, low operation cost and good temperature control effect.

The invention relates to the technical field of non-contact heat exchange of computer cabinets, in particular to a high-performance computer two-phase cooling isolation heat exchange cabinet which comprises a cabinet unit, a corrugated bare wall, a medium switching system and a reciprocating driving mechanism. The medium switching system comprises a lower-layer driving cavity fixed to the bottom of the corrugated plate and an upper-layer follow-up cavity fixed to the top of the corrugated plate, the two ends of the straight-through heat conduction pipe are communicated with the two cavities respectively, a column block and a free supporting rod are arranged in a pipe opening in a sleeved mode, and the reciprocating driving mechanism drives the column block to move up and down in the straight-through heat conduction pipe. And a solid-liquid two-phase medium is driven to flow back and forth between the inner side groove and the outer side groove, so that heat exchange is realized. The device is combined with phase change material latent heat circulation and straight air duct design, full-closed, efficient and low-cost heat exchange is achieved through a low-power-consumption driving system, and the device has high reliability, environment friendliness and expandability.

The invention discloses a heat dissipation optimization device and a heat dissipation method for a high-density three-dimensional stacked chip, and relates to the field of heat dissipation devices. According to the scheme, a heat conduction base is tightly attached to a plurality of first heat pipes and main fins, efficient conduction and rapid dissipation of heat on the surface of the chip are achieved, and therefore the heat on the surface and the heat in the chip are taken away at the same time; and an internal and external cooperative temperature control mechanism is formed. Meanwhile, in the cooling process, the rotatable flow direction assembly slowly presses and holds the cooling liquid to flow back and forth in the micro-flow hole through the sealing sliding plate, secondary heat dissipation cooperation based on heat dissipation of the first heat pipe is formed in the heat conduction cover through the second heat pipe and the auxiliary fins, and secondary heat dissipation of the fluid temperature is achieved. And through reciprocating circulation, the cooling liquid not only absorbs high heat of a stacking area in the middle of the chip to avoid hot stacking, but also uniformly disperses heat energy along two ends in reciprocating motion to avoid continuous overheating of the tail end caused by traditional one-way flow.

The utility model relates to a three-plunger reciprocating process pump with high pressure resistance, which belongs to the technical field of process pumps and comprises a fixed bottom plate, a pressure regulating mechanism is arranged at the top of the fixed bottom plate and comprises a pump body fixedly mounted at the top of the fixed bottom plate, and a regulating valve is arranged on the front side of the pump body. According to the three-plunger reciprocating process pump with the high anti-pressure capacity, through the arranged pressure adjusting mechanism, the pump body is used for driving liquid to be conveyed through the conveying pipe, the liquid is buffered when passing through the buffering pipe through the conveying pipe, and when the pressure in the pump body is too large, a piston plate is pushed in a pressure relief cylinder to move; and the piston plate drives the sealing plate to move until the sealing plate moves until the pressure relief pipe is not closed any more, the pressure relief barrel and the pressure relief pipe are communicated with the outside, air in the pressure relief barrel is discharged outwards at the moment, air pressure in the pressure relief barrel and the pump body can be released, and the situation that the pump body is damaged due to the fact that the pressure intensity in the pump body is too large is avoided.

The present application relates to sewage treatment technical field, in order to solve the internal physical separation of sewage treatment equipment in the prior art, the volume of each process section is fixed, the sewage treatment capacity of equipment is fixed, each process section volume cannot be adjusted with the change of external factors, thereby the sewage treatment capacity of equipment is inconvenient to adjust;An integrated domestic sewage treatment system is provided, including horizontal tank body, the front end of the inside of tank body is provided with at least a group of first aeration device, the rear end of the inside of tank body is provided with at least a group of membrane module and second aeration device;And the front end and the rear end in the inside of tank body are formed by the first aeration device, membrane module and second aeration device in tank body to form pressure difference, so that the sewage in tank body reciprocating flows from rear end to front end;It can realize the flow of sewage between different fuzzy process sections, complete biochemical reaction process, reduce equipment cost, energy consumption and failure rate, and improve the effect of standard discharge rate.

The invention discloses a cross-linked polyethylene insulated fireproof power cable and a winding device thereof, and the cross-linked polyethylene insulated fireproof power cable comprises a cable, a movement limiting assembly and two battens. The movable limiting assembly is arranged on the cable; a winding device for a cross-linked polyethylene insulated fire-resistant power cable comprises a supporting plate, a wire coil, a cooling assembly, a uniform winding assembly, a transmission assembly and a locking assembly, and the wire coil can wind the cable on the wire coil through rotation action. According to the invention, through the cooling assembly, when the reciprocating sliding part generates reciprocating sliding action through rotation, the heat dissipation part works. The heat dissipation part makes water flow back and forth through positive pressure and negative pressure, and surface heat is taken away. And meanwhile, high-speed rotation generates airflow to further accelerate heat dissipation of the cable. And the temperature is continuously reduced in the rolling process, so that the insulation layer is prevented from being softened and the fire resistance is prevented from being reduced due to over-high temperature after use, and the physical and electrical performance is maintained to be stable.

The utility model discloses a control device of a gas-steam combined cycle unit, which relates to the technical field of gas and comprises a gas turbine and a steam turbine, and a heat exchanger is connected between the gas turbine and the steam turbine. In the process that cold water enters the cylinder from the water inlet pipe and flows towards one end of the steam outlet pipe, when the cold water flows between the inner side of the cylinder and the outer side of the main steam passing pipe, the cold water forms internal and external conversion annular flow through flow guide of the multiple inner circulation gaps and the multiple outer circulation gaps, and therefore the cold water forms radial reciprocating flow in the flowing process; therefore, the inner layer and the outer layer of cold water are continuously changed, heat exchange of the main gas passing pipe and the gas passing branch pipes is more uniform, the phenomenon that a relatively static heat exchange layer is formed is avoided, the heat exchange efficiency of high-temperature flue gas and cold water is enhanced, and the heat exchange effect of the gas-steam combined cycle unit control device is enhanced.

This invention relates to the field of cold stamping die technology and discloses a design template for a cold stamping die sleeve, including a base, a pad fixedly installed inside the base, a die sleeve fixedly installed inside the pad, a die sleeve fixedly installed inside the die sleeve, and a cooling water inlet connector, a cooling water outlet connector, and a lubricant connector fixedly installed outside the base. The die sleeve has an interface docking mechanism, an automatic lubrication mechanism, and an assembly mechanism. The automatic lubrication mechanism includes a driven column. This invention effectively reduces stamping friction between dies through precise injection of lubricating oil. Simultaneously, the reciprocating flow of oil between the die sleeve and the inner core provides hydraulic-assisted damping, effectively absorbing the impact vibration generated during stamping, thereby extending the service life of the die and improving the processing quality of the stamped parts.

The utility model discloses a plain river network reciprocating flow choking and guiding device, which relates to the field of river channel guiding facilities and comprises a plurality of guiding plates arranged on two sides of a river channel bank, the appearance of each guiding plate is in a Tesla valve shape, and all the guiding plates are arranged on the river channel bank in the same direction; the fixed seats are arranged in one-to-one correspondence with the guide plates, and the fixed seats are arranged on the bank of the river channel; one end of the fixing frame is rotationally arranged on the fixing seat, and the other end of the fixing frame is connected with the flow guide plate; according to the device, a simple flow blocking-guiding structure is constructed in a plain river network area by utilizing a Tesla valve principle, so that the flow direction of a river channel water body can be controlled under a certain hydrological condition, accurate prevention and control of a protection area can be realized, and the flow blocking-guiding structure has the characteristics of simplicity in design and construction, low economic cost, good prevention and control effect and the like.

The utility model discloses an aluminum hydroxide washing device, which relates to the technical field of aluminum hydroxide production and comprises a bottom plate, two vertical plates are symmetrically and fixedly connected to the top of the bottom plate, a washing box is rotatably connected between the two vertical plates through two first rotating rods which are symmetrically distributed front and back, and a first motor is fixedly connected to the front side of the vertical plate on the front side. The output end of the first motor penetrates through the vertical plate and is fixedly connected with the front end of the first rotating rod on the front side, a box cover is installed on the top of the washing box, and the top of the box cover communicates with multiple rows of liquid spraying pipes. During use, the washing box is driven by the first motor and the first rotating rod to swing left and right in a reciprocating mode, aluminum hydroxide can flow left and right on the supporting plate in a reciprocating mode, cleaning liquid is sprayed to the supporting plate in cooperation with the multiple rows of liquid spraying pipes located on the upper side of the supporting plate, and the aluminum hydroxide can make full contact with the cleaning liquid; and the aluminum hydroxide cleaning effect and quality are improved.

The application relates to a submarine large-diameter pipeline installation device and a construction process thereof, in particular to a submarine large-diameter pipeline installation device and a construction process thereof with a pipe diameter larger than DN1200. The device comprises a pipeline body, the two ends of the pipeline body are provided with an ellipsoidal flange, and the pipeline body is provided with an anti-sliding pipe shoe; the anti-sliding pipe shoe comprises a wave-shaped flat pipe shoe, an anti-rolling support and a fixing sleeve, the wave-shaped flat pipe shoe is symmetrically provided with double wave-shaped plates on the two sides, and the wave-shaped flat pipe shoe is provided with the anti-rolling support; the anti-rolling support is provided with the fixing sleeve matched with the pipeline body. The pipeline body is installed underwater in sections through the anti-sliding pipe shoe, the device can adapt to relatively complex sea conditions such as reciprocating flow, the requirement for the leveling of the submarine pipeline bed is reduced, the large-diameter pipeline with a diameter larger than DN1200 can be quickly installed, cost is saved, the operation is simple, and the construction is convenient.

The invention discloses a quantitatively-added lubricating oil preparing and blending device, relates to the technical field of lubricating oil blending, and aims at solving the technical problems that a stirring structure in the lubricating oil preparing and blending device is single in function and low in applicability. The top of the blending tank is fixedly connected with a top cover through a first bolt, and a stirring mechanism is fixedly arranged in the blending tank. Through an iris structure, a plurality of stirring rods are driven to move, two states of dispersing and gathering of the stirring rods are presented, during dispersing of the stirring rods, lubricating oil can be stirred, in the stirring process, the lubricating oil at the bottom of the blending tank flows in a reciprocating mode through a dust removal assembly, the lubricating oil mixing efficiency is improved, and when the stirring rods form a pipeline shape, the lubricating oil can be uniformly mixed. The lubricating oil mixing device can convey and filter lubricating oil and has two different use states, the lubricating oil mixing efficiency is improved, and the applicability of the device is improved.

The application relates to a self-adaptive air cooler and an adjusting method thereof, which comprises a cooling cylinder, an inflow medium expansion cylinder, an outflow medium collection cylinder, a moving pipe arranged in the cooling cylinder and moving in parallel, a flow resistance mechanism arranged on the moving pipe in parallel and a moving mechanism arranged on the cooling cylinder; the moving pipe is connected with the expansion cylinder and the collection cylinder respectively; the moving mechanism drives the moving pipe to move and adjusts the interval of the moving pipe; gas flows into the cooling cylinder, is temporarily stored in the flow resistance mechanism, flows along the moving pipe and is discharged. The problems that the medium needs to flow back and forth in the cooling pipe to complete air cooling, the processing capacity is limited when the inflow amount of the medium is large, the gas amount generated by the fan is constant, and the air cooling capacity is limited when the temperature of the medium changes are solved.

The application discloses a method and device for controlling liquid reciprocating flow based on magnetic force and application. The method provided by the application utilizes the interfacial capillary force generated by the hydrophilic magnet on the gas / liquid / solid three-phase interface formed before the liquid is separated to realize the flow control of the liquid. The method has the advantages of: 1) non-contact flow control, which can avoid the pollution caused by contact control (such as mechanical probe control); 2) the liquid is moved smoothly and quickly, no bubbles and new gas-liquid interfaces are generated, the severe friction and vibration on the gas-liquid interface are avoided, and the aerosol generation probability is reduced; 3) compared with the existing magnetic control mode for moving or disturbing the liquid by pushing force, the aerosol pollution risk is greatly reduced. In addition, the beneficial effects of only 1-2 minutes for one round of antigen-antibody combination and 5-15 minutes for one detection are realized, and the detection speed is much higher than that of the traditional immunodetection method based on a reaction cup or a microhole plate.

The invention relates to the technical field of dies, in particular to an automobile metal plate stamping die which comprises an upper die body and a lower die body, the upper die body is located over the lower die body, guide mechanisms are arranged on the left side and the right side of the upper die body and the left side and the right side of the lower die body correspondingly, and each guide mechanism comprises a guide column and a sliding base. A second heat dissipation structure for absorbing heat emitted by local high temperature generated during stamping is arranged in the lower die, the first heat dissipation structure and the second heat dissipation structure are connected through a connector, and the connector is used for achieving reciprocating flowing of the liquid cooling medium between the first heat dissipation structure and the second heat dissipation structure and absorbing heat and cooling the liquid cooling medium. Closed-loop liquid cooling circulation is formed through the first heat dissipation structure in the guide column and the second heat dissipation structure in the lower die, a liquid cooling medium is continuously cooled through the connector, dual efficient heat dissipation of a guide mechanism and a stamping area is achieved, friction heat and stamping local high temperature are remarkably reduced, sheet metal part deformation is avoided, the stamping precision is improved, and the product quality is improved. The effects of cooperative heat dissipation and efficient cooling are achieved.

The present application relates to a kind of turbulence system and construction method for slowing down scouring erosion of seabed around offshore wind turbine pile foundation, to destroy original downflow and horseshoe vortex system, set wide range of spoiler at a distance from wind turbine pile foundation body, especially in the direction of reciprocating flow dominant direction;More intensive and higher spoiler is arranged within one times pile diameter range around pile foundation body, and the bed surface around pile foundation body is mainly protected.The present application designs spoiler and achieves the purpose of large-scale anti-scouring by the arrangement mode of multiple initiatives combination and multiple devices joint action, and is strong in universality, can be used in different terrain and different environment, especially effective for reciprocating flow.

The utility model discloses a kind of adjustable connected body oil cylinder, specifically related to mechanical technical field, the utility model includes two identical oil cylinder and adjusting seat group, oil cylinder includes cylinder body, piston rod, piston and end piece, one end of cylinder body is closed end, and is connected with pull ring one, the other end of cylinder body is the open end with communicating inner chamber, and open end is connected with the end piece for slidingly connecting piston rod, piston is fixedly connected in the inner end of piston rod, and piston is slidingly connected in cylinder inner chamber, the outer end of piston rod is connected with pull ring two, the side portion of end piece is provided with pipe joint one, pipe joint one is communicated with adjusting seat group by hose, the hydraulic oil in two oil cylinders is filled between respective piston and end piece respectively, and is circulated by adjusting seat group. It can be realized in stretching process to extrude transmission to hydraulic oil, realize stretch adjustable, relative to the original compression adjustable type oil cylinder structure, more suitable for the use of stair machine, mountain climber and other exercise equipment.

The utility model provides an automatic dispersion machine suitable for water-based gloss oil production, which comprises a base, side plates, a rotating shaft, a fixing frame, a dispersion tank, a motor, a material guide pipe and a scattering mechanism, the side plates are fixed on the upper side surface of the base, and the rotating shaft is rotatably arranged between the side plates; a fixing frame is fixed in the middle of the rotating shaft, a dispersing tank is fixed in the middle of the fixing frame, and a material guide pipe is fixed at one end of the dispersing tank; the motor is fixed to the side face of one side plate, and the output end of the motor is fixed to the rotating shaft. The scattering mechanism is fixed to the fixing frame, and the output end of the scattering mechanism is rotationally arranged in the dispersing tank. According to the device, mixed liquid of a water-based gloss oil raw material and a dispersing agent can flow in a reciprocating mode, the water-based gloss oil raw material and the dispersing agent are fully fused, in addition, the flowing liquid can be beaten through the scattering mechanism, and the fusion efficiency of the water-based gloss oil raw material and the dispersing agent is further improved.

The invention belongs to the technical field of vehicle accessories, and relates to a shock absorber which comprises a bottom valve assembly, a working cylinder assembly and an external nitrogen storage bottle, a damping cavity for oil liquid to flow back and forth is formed in the bottom valve assembly, the external nitrogen storage bottle comprises an outer bottle body and an inner bottle body which are arranged at an interval, the inner bottle body is provided with a floating piston in a sliding mode, and the floating piston is arranged in the working cylinder assembly. The floating piston divides a cavity of the inner bottle body into a gas cylinder oil cavity and a gas cavity, an oil overflow cavity is formed between the outer bottle body and the inner bottle body, the gas cylinder oil cavity is communicated with the oil overflow cavity through an oil overflow hole, the oil overflow cavity is communicated with the working cylinder assembly through a backflow channel, and the oil overflow hole is formed in the top of the gas cylinder oil cavity. According to the shock absorber provided by the invention, the technical problem of oil series flow of an existing nitrogen shock absorber can be solved.

The invention relates to a self-adaptive adjusting air cooler and an adjusting method thereof. The self-adaptive adjusting air cooler comprises a cooling cylinder, an expanding cylinder for a medium to flow in, a collecting cylinder for a medium to flow out, moving pipes which are movably arranged in the cooling cylinder in parallel, flow blocking mechanisms which are arranged on the moving pipes in parallel, and a moving mechanism which is arranged on the cooling cylinder, wherein the moving pipe is respectively communicated with the expanding cylinder and the collecting cylinder; the moving mechanism drives the moving pipes to move, and the distance between the moving pipes is adjusted. Gas flows into the cooling cylinder and is temporarily stored in the flow blocking mechanism, and the gas flows along the moving pipe and is discharged. The problems that in an existing scheme, a medium needs to flow back and forth in a cooling pipe to complete air cooling, when the inflow amount of the medium is large, the processing capacity is limited, the amount of gas generated by a fan is constant, and the air cooling capacity is limited when the medium temperature changes are solved.

The utility model provides a heating core body with double S-shaped flow channels, which solves the technical problems that when cooling liquid in an existing PTC (Positive Temperature Coefficient) heating core body flows through a water chamber, the water flow direction of the cooling liquid is random, vortexes are easy to form, vortex bubbles are further generated, local temperature is too high, and heating is not uniform, and can be widely applied to the field of PCT (Positive Temperature Coefficient) heating. The water heater specifically comprises a middle shell and a water tank, a plurality of heating bag grooves are formed in the middle shell side by side, and the heating bag grooves are in an inward concave shape and extend towards the bottom of the middle shell; a water chamber is formed in the water tank, a water inlet pipe and a water outlet pipe which are communicated with the water chamber are arranged on the side wall of the water tank, a baffle is arranged in the middle of the water tank and located between the water inlet pipe and the water outlet pipe, one end of the baffle is closed, the other end of the baffle is open, and cooling liquid can only pass through the open end of the baffle. A convex edge is further arranged on the inner side wall of the water tank, and the convex edge directly faces the heating groove of the heating bag groove and is tightly attached to the heating groove; and the convex edge, the baffle and the heating groove jointly form a reciprocating flow channel in the water chamber.

A cooling fabric comprises a fabric body with several breathable cooling structures on its bottom surface. The fabric body includes a bottom layer, a middle layer, and a top layer, with the middle layer located between the bottom layer and the top layer. The top layer has a breathable mesh structure and a breathable yarn layer woven into its outer wall. When used in clothing, the breathable cooling structures allow outside air to enter through the surface layer of the breathable mesh structure during wear and movement. This air passes through the mesh openings into corresponding cavities and then into the breathing channels. The cooling film within the breathing channels deforms under the influence of airflow, with its curved portion extending out of the breathing channel from the middle section to contact the skin. With the reciprocating flow of air, the cooling film intermittently contacts the skin, accelerating the evaporation of sweat and providing a lasting cooling sensation.