31results about How to "Effective flow" patented technology

A shaft seal for a turbomachine, the process side (3) of which can be sealed off with respect to the atmosphere (4) by the shaft seal (7, 13, 17), has a process gas seal (7, 13), which can be acted on with a process gas (10) and blocked at the process side (3), and an atmosphere seal (17), which can be acted on with air (20) and blocked at the atmosphere side (4), and also a ventilation chamber (22) which runs around a shaft (1) of the turbomachine, which ventilation chamber (22) is arranged between the process gas seal (7, 13) and the atmosphere seal (17) in order to collect and discharge process gas leakage which has passed through the process gas seal (7, 13) and air leakage which has passed through the atmosphere seal (17), wherein the ventilation chamber (22) has, at the radially inner side thereof, a leakage inlet (23) and, at the radially outer side thereof, a leakage outlet (24), and also fittings (26, 27) between the leakage inlet (23) and the leakage outlet (24), wherein the fittings (26, 27) are dimensioned such that the ventilation chamber (22) has a flame barrier function with regard to an ignition of the leakage at the leakage inlet (23), and / or the leakage in the ventilation chamber (22) is not ignitable.

The invention provides an SOILDMOS transistor with changeover body connection, comprising a source region (40), a body region (30), a drift region (20), a drain region (50), a source electrode (400), a drain electrode (500) and a gate electrode (60). The invention is characterized in that an embedded dielectric layer (70) is provided with windows (800, 810 and 820) which have gradually changed widths and connect an SOI layer and a substrate semiconductor. In the SOILDMOS transistor with changeover body connection, the SOI layer (active region) and the substrate semiconductor can be connected by optimally designing the width of the windows with gradually changed widths of the embedded dielectric layer. Cavities generated by collision ionization can flow out from the substrate. Meanwhile, joule heat generated in a device region can effectively flow toward heat sink of the substrate, which not only can reduce self-heating effect but also can depress floating body effect.

The invention relates to a vehicle anti-theft system and a method. An on-vehicle host downloads a unique identifier as a control identifier from a customer service center and stores the identifier as a component identifier into at least a component. When a vehicle is started, the on-vehicle host judges whether the control identifier is obtained; if yes, the on-vehicle host gives an inquiry command to at least a component so as to obtain a component identifier and then judges whether the component identifier is in line with the prestored control identifier of the on-vehicle host; if yes, the on-vehicle host generates a normal operation signal to work normally and transmits the control identifier back to the customer service center; subsequently, the customer service center compares the control identifier with a theft database; if the vehicle is found a theft vehicle, follow-up processing is carried out; if not, the on-vehicle host generates an abnormal signal and transmits the signal to the customer service center, which then implements follow-up processing.

The present invention provides a hot smoke composite type fire detector having a simple structure and capable of observing the light generated by a display lamp in each direction. The hot smoke composite type fire detector (100) includes a main body base (10), a printed circuit board (1), a thermal sensitive element (2), a dark box (3), a display lamp (4) arranged on the printed circuit board (1), a protective cover (30) and a club-shaped photoconductive tube (5) for guiding the light emitted from the display lamp (4) to the outer of the protective cover (30), wherein the photoconductive tube (5) penetrates a throughhole (35) of the photoconductive tube formed on the protective cover (30), and one end face of the photoconductive tube (5) confronts the display lamp (4), the other end face is projected outside the protective cover (30), the projecting height is about identical with a projecting height of the dark box (3) or more than the projecting height of the dark box (3), moreover, the photoconductive tube (5) opposites with the thermal sensitive element (2) after an interval of the dark box (3).

The invention provides high-activity silver powder and a preparation method and application thereof, and relates to the field of metal powder metallurgy. The preparation method includes the followingsteps that S1, a silver nitrate solution and an architecture agent are prepared, mixed, diluted and prepared into a silver nitrate solution system with the concentration of 0.1-1.0 g / L; S2, a reducingagent is dissolved, a pH regulator is added to obtain a reduction solution, and the reduction solution and the silver nitrate solution system obtained in the step S1 are mixed and slowly stirred to react and generate silver crystals; S3, a disperse inducer is added into the system obtained in the step S2 and evenly mixed; S4, a silver nitrate solution with the concentration of 50-250 g / L is prepared and added into the system obtained in the step S3 at a predetermined time, and after addition is completed, standing and ageing are conducted; and S5, the material obtained in the step S4 is cleaned and deposited, and the high-activity silver powder is obtained. The silver powder obtained through the method is of a hollowed-out structure and is large in specific surface area, high in catalyticefficiency and easy to settle and separate.

The invention discloses a low-voltage intelligent distribution cabinet, comprising a cabinet body and a cabinet door. The cabinet body comprises a bottom cabinet, a pull-out cabinet body and a plurality of distribution sub-cabinets. The cabinet door is hinged on the front end of the distribution sub-cabinet. The inner cavity of the bottom cabinet and the pull-out cabinet is divided into two cavities by a partition board. The front end of the inner cavity of the bottom cabinet is communicated with the front end of the inner cavity of the pull-out cabinet, and the front baffle plate of the bottom cabinet is provided with an air inlet hole; The rear end of the inner cavity of the bottom cabinet is communicated with the rear end of the inner cavity of the suction type cabinet, and the rear endof the inner cavity of the bottom cabinet is provided with an air suction fan; A plurality of distribution sub-cabinets are provided with an air inlet channel connected with each other at the front end on the same side, The bottom of the air inlet passage is communicated with the front end of the pull-out cabinet body, the air inlet passage and each distribution sub-cabinet are provided with through holes, the rear ends of the other sides of several distribution sub-cabinets are provided with air outlet passages which are communicated with each other, the bottom of the air outlet passage is communicated with the air extraction fan, and the air outlet passage and each distribution sub-cabinet are provided with through holes.

The invention provides an automobile rear bumper spoiler. The automobile rear bumper spoiler comprises a main plate body structure. Stable spoilers are arranged at the lower end of the main plate bodystructure, and mounting open holes are formed in the positions close to the inner sides of the stable spoilers on the two sides; a lifting spoiler is slidably connected between the stable spoilers, and an air baffle mechanism is fixedly hinged to the air inlet end of the lifting spoiler. A fastening structure is arranged at the upper end of the main plate body structure in a clamping manner; sliding grooves can enable a bottom spoiler to do parallel lifting motion; the bottom spoiler is integrally designed into a general sports car spoiler shape; when the front air baffle plate directly guides the air flow to the bottom of the bottom spoiler, the integrally accelerated flowing airflow passes through the bottom spoiler and then presses the whole bottom spoiler downwards, so that the tail of the automobile is more stable during high-speed running, the whole bottom spoiler is in a state of being folded through a tension spring in a non-running state of the automobile, and a good effect can be achieved only after the automobile runs.

The invention provides a technique for configuring an airbag for a motorcycle ensuring full protection of a rider in an accident, and its relating technique. The motorcycle mounts, upon frontal collision, an airbag device 120 having the airbag 121 developed and inflated in a rider protection region formed in front of the rider, an inflator 125 capable of supplying inflation gas into the airbag 121, and a straightening cloth 130 capable of adjusting flowing condition of the inflation gas supplied from the inflator 125 and flowing in the airbag 121.

The invention discloses a vibrating screen with a high screening efficiency and belongs to the technical field of screening equipment. The vibrating screen comprises vertical columns fixed to the ground, supporting columns arranged on the top ends of the vertical columns in a floating mode, a screen connected to the supporting columns and vibrating motors for driving the supporting columns to vibrate. The vibrating screen also comprises a hot wind device arranged above the screen, wherein the hot wind device comprises blades, a rotating motor for driving the blades and heating parts arranged below the blades; and each heating part comprises a bracket and a heating wire winding the bracket. When the vibrating screen screens a material, the heating wire heats, the rotating motor drives the blades to rotate to form a hot wind airflow and the hot wind airflow flowing downward can heat the material on the screen to reduce moisture of the material and improve the drying degree of the material, so that the agglomerated material can be scattered, and therefore, the screening efficiency and the screening quality are improved favorably.

The invention provides a disposable vacuum fresh-keeping soft barrel. The disposable vacuum fresh-keeping soft barrel comprises a barrel body and a barrel bottom. The barrel body comprises a plurality of barrel body side walls. The barrel body side walls are connected end to form a polygon prism structure. Each barrel body side wall is provided with wavy wrinkles distributed in the axial direction of the barrel body, so that the barrel body side walls can be compressed in the axial direction. The barrel bottom is arranged at one end of the barrel body and is in sealed connection with the barrel body, so that a containing cavity used for storing water is formed. The barrel bottom comprises a plurality of first reinforcing grooves. The first reinforcing grooves are formed around the middle area of the barrel bottom and extend outwards from the middle area of the barrel bottom. The number of the first reinforcing grooves corresponds to the number of the barrel body side walls, and each first reinforcing groove is perpendicular to the corresponding barrel body side wall. The first reinforcing grooves are formed and are perpendicular to the barrel body side walls, and when the barrel body of the disposable vacuum fresh-keeping soft barrel is compressed, the first reinforcing grooves can enhance the strength of the barrel bottom, so that the barrel bottom is prevented from deforming during compression. The invention further provides a vacuum fresh-keeping water taking device.

The invention belongs to the technical field of material preparation, and in particular relates to a composite material full-automatic preparation device. The device comprises a frame and a mixer, a stirring mechanism and at least two groups of material conveyor pipes arranged on the frame; a material mass measurement device is arranged below the mixer, the stirring mechanism is arranged above the mixer, the stirring mechanism is connected with a lifting driving mechanism; each material conveyor pipe is installed with an automatic control valve, the tail end of each material conveyor pipe is connected with a hose along the material conveying direction, the discharge hole of each hose corresponds to the opening of the mixer, the corresponding hose is provided with a pulling lowering mechanism; and the material mass measuring device, the automatic control valve, the lifting driving mechanism and the pulling lowering mechanism are connected with the control system. The preparation device disclosed by the invention is high in automation degree, capable of realizing the sufficiently precise burdening of the composite material and the fast stirring, the problems that the manual operation efficiency is low, the labor intensity is large and the general automatic equipment is large in random error are solved.

The invention relates to a low-temperature tower type flue purification device and an application method thereof. The low-temperature tower type flue purification device mainly comprises a purification tower, a draught fan and an air blower, wherein the draught fan is arranged on the lateral lower side of the purification tower; a plurality of condensation adsorption nets are uniformly mounted in the purification tower with a horizontal included angle of 5-15 degrees; a plurality of liquid spraying holes are formed in one side of the purification tower and are mounted under one fixed side of each condensation adsorption net; the air blower is arranged at the top of the purification tower; a filter screen plate is arranged under an air outlet of the air blower; a liquid spraying opening is arranged above one fixed side of the filter screen plate; and a plurality of groups of heat pump systems which independently and circularly work are arranged at the outer part of the purification tower. The application method comprises the following steps: when air entering from an air inlet of the draught fan collides with the bottommost layer of the condensation adsorption nets, the air in the purification tower is sequentially cooled and condensed; and the air is adsorbed by the condensation adsorption nets layer by layer until the air passing through the filter screen plate reaches emission standards. The low-temperature tower type flue purification device has the beneficial effects that the low-temperature tower type flue purification device has the advantages of novel structure, high purification efficiency and long service life.

The invention provides a high-activity silver powder, a preparation method and application thereof, and relates to the field of metal powder metallurgy. The preparation method of the present invention comprises the following steps: S1, preparing silver nitrate solution and framework agent solution, mixing silver nitrate solution and framework agent solution, diluting, and preparing a silver nitrate solution system whose concentration is 0.1-1.0g / L; S2 1. Dissolving the reducing agent, adding a pH regulator to obtain a reducing solution, mixing the reducing solution with the silver nitrate solution system obtained in step S1, stirring at a slow speed, and reacting to generate silver grains; S3, adding the dispersion inducer to the obtained silver nitrate in step S2 In the system, mix evenly; S4, prepare the silver nitrate solution with a concentration of 50-250g / L, add it to the system obtained in step 3 within a predetermined time, after the addition is completed, let the material stand still, and age; S5, cleaning step S4 The material obtained in the process is settled to obtain highly active silver powder. The silver powder obtained by the method of the invention has hollow structure, large specific surface area, high catalytic efficiency and easy sedimentation and separation.

The invention discloses a steam pipeline drainage recovery system suitable for severe cold regions, which comprises several drainage recovery units connected with the steam pipeline along the way, and the drainage recovery unit includes a steam trap group connected with the steam pipeline in sequence, a condensed water recovery The device and the condensed water pipeline; wherein, each condensed water pipeline is collectively connected with a condensed water main pipe, and the condensed water main pipe and the steam pipe are laid in the same heat preservation structure. The steam pipeline drainage recovery system connects several drainage recovery units along the way of the steam pipeline, gathers a small amount of condensate recovered in each drainage recovery unit into the condensate main pipe, and lays the condensate water main pipe and the steam pipe outside In the same insulation structure, it solves the phenomenon of difficult condensed water recovery and easy freezing caused by the small amount of condensed water generated per unit time and the low flow rate of condensed water; at the same time, it uses the heat tracing principle of the steam pipe's own heat and adopts low-cost settings to achieve Efficient recovery of condensate.

An absorption type grounding body is disclosed, comprising a grounding body and a flexible graphite wire arranged on the grounding body, the grounding body includes a housing and a plurality of irregularly shaped flexible conductors filled in the housing, the flexible graphite wire passes through the grounding body, and one end of the flexible graphite wire passes through the housing of the grounding body for connecting the grounding device, the other end penetrates out of the housing of the grounding body for connection to the depth of the soil, the flexible conductor is expanded graphite particles or conductive sponge, and a plurality of water-absorbent resins for reducing the grounding resistance are distributed between the plurality of flexible conductors in the grounding body. The absorption type grounding body of the invention fills the housing of the grounding body with irregular flexible conductors, generates irregular direction force when lightning energy passes between the flexible conductors, and can cancel and digest lightning strike energy mutually, does not need complex connection lines, and has the advantages of simple structure, good grounding effect, small volume and convenient use.

The present invention provides an efficient sludge-wastewater separator, comprising a sludge separator, a sludge stirring device and a wastewater treatment device; one end of the sludge separator is connected with the sludge stirring device and the other end of the sludge separator is connected with the sludge treatment device. The efficient sludge-wastewater separator has the advantages that wastewater is biologically degraded by using biological techniques, thereby reducing various environmental pollutions due to the addition of various chemicals to wastewater, some sludge may be present in the wastewater and may bring certain impact on the biological degrading process of the wastewater, the wastewater and sludge are effectively separated first, and the separated sludge is then treated and applied to other fields.

The invention belongs to the technical field of chemical fiber spinning, and in particular relates to a chemical fiber spinning and texturing system, which includes sequentially arranged yarn feeding devices for placing raw silk threads and unwinding them; a heating device for heating the unrolled silk threads ; The cooling device cools the high-temperature silk; the false twister performs false twist on the silk; the oiling device lubricates the silk; the winding device rewinds the oiled silk; It includes a degreasing device, which is arranged behind the oiling device, and absorbs excess oil on the silk by means of negative pressure adsorption. The present invention uses negative pressure adsorption to remove oil. After the oiled silk thread passes above the capillary branch tube, under the action of a negative pressure pump, the port of the capillary branch tube generates a certain suction force, which can effectively Suction the excess oil on the thread, and make the oil flow from the capillary branch pipe to the main pipe, and then flow into the liquid storage tank, which not only has high oil removal efficiency, but also will not scratch the thread.

The invention relates to a low-temperature tower type flue purification device and an application method thereof. The low-temperature tower type flue purification device mainly comprises a purification tower, a draught fan and an air blower, wherein the draught fan is arranged on the lateral lower side of the purification tower; a plurality of condensation adsorption nets are uniformly mounted in the purification tower with a horizontal included angle of 5-15 degrees; a plurality of liquid spraying holes are formed in one side of the purification tower and are mounted under one fixed side of each condensation adsorption net; the air blower is arranged at the top of the purification tower; a filter screen plate is arranged under an air outlet of the air blower; a liquid spraying opening is arranged above one fixed side of the filter screen plate; and a plurality of groups of heat pump systems which independently and circularly work are arranged at the outer part of the purification tower. The application method comprises the following steps: when air entering from an air inlet of the draught fan collides with the bottommost layer of the condensation adsorption nets, the air in the purification tower is sequentially cooled and condensed; and the air is adsorbed by the condensation adsorption nets layer by layer until the air passing through the filter screen plate reaches emission standards. The low-temperature tower type flue purification device has the beneficial effects that the low-temperature tower type flue purification device has the advantages of novel structure, high purification efficiency and long service life.

The invention provides equipment for treating sewage by utilizing biological catalysis. The equipment comprises an apparatus main body, aeration devices, biodegradation devices and an insoluble-matterrecovery device, the insoluble-matter recovery device is arranged at the top end of the apparatus main body, water inlets are separately arranged at two sides of the top end of the apparatus main body, the water inlets are connected with sewage pipelines, and water outlets are arranged at two sides of the bottom end of the apparatus main body, the water outlets are connected with drainage pipelines, water inlet valves are arranged on the sewage pipelines, drainage valves are arranged on the drainage pipelines, one end of each sewage pipeline is connected with a water inlet pump, biodegradation devices are uniformly arranged in the apparatus main body, and the aeration devices are arranged under each biodegradation device. According to the invention, a biological technology is adopted to biologically degrade sewage, so that all kinds of environmental pollution caused by throwing and putting various chemical medicines into the sewage is reduced, biodegraded sewage can be used for secondary water in other situations of a city, and water resources are saved.

The invention relates to a medicine used for treating chronic bronchitis and the preparation method of the medicine. The medicine consists of the following compositions and each composition accounts for the weight percentage of the total amount of the medicine as following: 40 to 70 percent fresh white turnip peel, 0.1 to 2.0 percent Zinc gluconate, 16 to 28 percent honey, 10 to 20 percent dry loquat leaf, 0 .25 percent preservative and the rest is white turnip juice. The formulation of the invention is oral liquid. When in preparation, the fresh white turnip peel is mashed and stirred into paste; the dry loquat leaf is ground into powder and the particle size of the powder is more or equal to 200 meshes; and the dry loquat leaf powder is evenly mixed with other compositions, sterilized and packed. Raw material is low in price and easy to obtain, and the preparation method is simple. The medicine used for treating chronic bronchitis has curative effect on treating the chronic bronchitis. In addition, the medicine also can improve and strength immunity of human body.

The invention relates to a medicine used for treating chronic bronchitis and the preparation method of the medicine. The medicine consists of the following compositions and each composition accounts for the weight percentage of the total amount of the medicine as following: 40 to 70 percent fresh white turnip peel, 0.1 to 2.0 percent Zinc gluconate, 16 to 28 percent honey, 10 to 20 percent dry loquat leaf, 0 .25 percent preservative and the rest is white turnip juice. The formulation of the invention is oral liquid. When in preparation, the fresh white turnip peel is mashed and stirred into paste; the dry loquat leaf is ground into powder and the particle size of the powder is more or equal to 200 meshes; and the dry loquat leaf powder is evenly mixed with other compositions, sterilized and packed. Raw material is low in price and easy to obtain, and the preparation method is simple. The medicine used for treating chronic bronchitis has curative effect on treating the chronic bronchitis. In addition, the medicine also can improve and strength immunity of human body.

The invention discloses a fireproof door with good heat insulation performance. The fireproof door comprises a fireproof door body, a fireproof door frame, fireproof door columns and a bottom groove;the fireproof door frame is movably connected to the top of the fireproof door body, the fireproof door columns are fixedly connected to the bottom of the fireproof door frame, and the bottom groove is fixedly connected to the fireproof door columns; the fireproof door body comprises a rubber layer, a heat insulation layer, movable wheels, sound insulation layers, one-way see-through glass and handles; the one-way see-through glass is embedded in the middle of the fireproof door body, the handles are fixedly connected to the left sides of the front and rear ends of the fireproof door body, therubber layer is fixedly connected to the middle of the fireproof door body, the sound insulation layers are fixedly connected to the left side of the rubber layer, the heat insulation layer is fixedly connected to the right side of the rubber layer, and the movable wheels are fixedly connected to the bottom of the heat insulation layer; sliding grooves are embedded in the top of the bottom groove. The whole fireproof door is stable in structure and convenient to close and open, can be used for viewing a visitor, and has good fireproof capability, a good sound insulation effect and high popularization value.

The invention discloses a composite grounding cable which comprises a grounding cable and a first anticorrosion layer wrapped on the outside of the grounding cable, The first anticorrosion layer is anelectrically conductive layer extruded on the outer wall of the grounding cable to form a seal inside the first anticorrosion layer, and at least one first anticorrosion layer is arranged, the grounding cable is made of metal simple substance or alloy metal, and the first anticorrosion layer is an electrically conductive rubber layer or an electrically conductive plastic layer. The composite ground cable of the invention is coated with one or more conductive anticorrosive layers on the surface of the ground cable, The conductive rub or the conductive plastic has good corrosion resistance, thereby ensuring that the electrical conductivity of the grounding cable covered by the anticorrosion layer is not easy to reduce conductivity due to external environmental corrosion. At the same time, the grounding cable adopts metal conductor, which has strong ability of resisting short circuit of large current. Even in the soil with high grounding resistance, the grounding cable can disperse lightning energy effectively. The structure is simple, the grounding effect is good, and the use is convenient.

The invention belongs to the technical field of material preparation, and specifically relates to a composite material automatic preparation device, which includes a frame, a batching barrel located on the frame, a stirring mechanism, and at least two sets of material conveying pipes; a material quality measuring device is arranged under the batching barrel; The stirring mechanism is located directly above the batching barrel, and the stirring mechanism is connected to the lifting drive mechanism; automatic control valves are installed on each material conveying pipe, and a hose is connected to the end of each material conveying pipe along the material conveying direction. The mouth corresponds to the mouth of the batching barrel, and each hose is equipped with a lifting and lowering mechanism; the material quality measurement device, automatic control valve, lifting drive mechanism, and lifting and lowering mechanism are all connected to the control system. The invention has a high degree of automation, can realize sufficiently accurate batching and rapid mixing of composite materials, and solves the problems of low manual operation efficiency, high labor intensity, and large random errors of general automation equipment.

The invention provides a device for improving the combustion efficiency of a fuel, the device comprises a metal sleeve shell, a plastic insulating shell is arranged in the metal sleeve shell, and theinterior of the plastic insulating shell is provided with an internal space filled with a liquid fuel, a liquid fuel inlet and a liquid fuel outlet; at least one ultrasonic transduction unit is arranged in the plastic insulating shell; the ultrasonic transduction unit comprises a first-order ultrasonic transduction unit and a first-order ultrasonic transducer supporting cover, the first-order ultrasonic transduction unit is completely immersed in the insulating liquid fuel, the first-order ultrasonic transducer supporting cover is arranged at the lower end of the first-order ultrasonic transduction unit, the first-order ultrasonic transducer supporting cover is arranged on the inner side of the plastic insulating shell and used for supporting the first-order ultrasonic transduction unit, afirst-order transducer plugging positioning cover is arranged at the upper end of the first-order ultrasonic transduction unit, and first-order ultrasonic transducer rubber end covers are arranged onthe two sides of the first-order ultrasonic transduction unit.

The invention provides a disinfection device for guiding the air flow direction, and relates to the technical field of air purification. The disinfection device comprises a disinfection machine body, a lower flow guide cover body and an upper flow guide cover body, wherein the lower flow guide cover body is installed at the top of the disinfection machine body on the two sides of an air outlet of the disinfection machine body, the lower flow guide cover body is of a hollow structure, the top of the lower flow guide cover body is welded with the bottom of the upper flow guide cover body, and the cross section of the bottom of the upper flow guide cover body is completely the same as that of the lower flow guide cover body.By arranging the upper flow guide cover body and the lower flow guide cover body, in the working process of the disinfection machine body, the lower flow guide cover body and the upper flow guide cover body are arranged, air is guided upwards to form an air flow which is matched with the breathing space of a human body, and air within the range of one meter to two meters away from the ground in the three-dimensional middle link forms drizzle to effectively guide disinfection factors to clean within the range of one meter to two meters away from the ground in the air.

The invention provides a municipal sewage and sludge separation treatment system. The municipal sewage and sludge separation treatment system comprises a sludge separation device, a sewage precipitation device and a sewage treatment device, one end of the sludge separation device is connected with the sewage precipitation device, and the sewage precipitation device is connected with the sewage treatment device. Sewage is biodegraded by adopting a biological technology in order to reduce various pollutions of various chemical medicines added to swage to environment and make much sludge exist in the sewage, the sludge has certain influences on the biodegradation process of the sewage, sewage and sludge are effectively separated, and the separated sludge is applied to other fields after being treated.

The invention discloses a liquid cooling system for a battery pack, the battery pack and a vehicle. The liquid cooling system for the battery pack comprises a liquid cooling assembly and a liquid cooling medium flow direction changing device. The liquid cooling medium flow direction changing device is connected between a liquid cooling source and the liquid cooling assembly, and the liquid cooling medium flow direction changing device can change the flow direction of a liquid cooling medium in the liquid cooling assembly. According to the liquid cooling system, the flow direction of the liquid cooling medium in the liquid cooling assembly can be changed by arranging the liquid cooling medium flow direction changing device, so that an effective uniform-temperature heat exchange effect is achieved, the problem that the temperature difference is large during heat exchange of the battery modules is avoided, the battery modules can operate in a relatively consistent temperature environment, therefore, the safety coefficient of the battery pack is improved, and the service life of the battery pack is prolonged.

The invention provides a rear bumper spoiler of an automobile, which includes a main body structure; a stable spoiler is arranged at the bottom of the main body structure, and installation openings are provided on the inner sides of the stable spoiler close to both sides; A lifting spoiler is installed and slidably connected between the stable spoilers, and a wind baffle mechanism is hinged and fixed at the air inlet end of the lifting spoiler; the upper end of the main body structure is engaged with a fastening structure , the chute allows the bottom spoiler to move up and down in parallel. The overall design of the bottom spoiler is in the shape of a general sports car tail. When the front windshield guides the airflow directly to the bottom of the bottom spoiler, the overall acceleration The flowing airflow will press down the whole bottom spoiler after passing through the bottom spoiler, so that the rear of the car will be more stable when driving at high speed. The whole bottom spoiler will pass through the tension spring when the car is not driving. The stowed state can only play a good role after the car is running.