21 results about "Serpentine channel" patented technology

The utility model discloses a waveguide slot antenna comprising a feed port layer, a slow wave line layer and a radiation slot layer which are stacked in sequence. The feed port layer is provided with a feed port used for inputting electromagnetic waves or outputting electromagnetic waves. The end face of one end, facing the feed port layer, of the slow wave line layer is provided with a snakelike slow wave cavity, one end of the snakelike slow wave cavity is provided with a feed signal end, and the feed signal end is correspondingly connected with the feed port. A plurality of waveguide radiation slots are formed in the snake-shaped channel of the snake-shaped slow wave cavity at intervals; a plurality of radiation cavity units in one-to-one correspondence with the waveguide radiation slots are arranged on the end face of one end, facing the slow wave line layer, of the radiation slot layer at intervals, a plurality of radiation slots are arranged in the radiation cavity units at intervals, and signal connecting ends correspondingly coupled with the waveguide radiation slots are arranged at one ends of the radiation cavity units. According to the utility model, the scanning angle of the antenna can be increased to adapt to application occasions with high antenna scanning angle requirements, and the adaptability is high.

The invention belongs to the technical field of microfluidics, and particularly relates to a microfluidic chip and a method for preparing liquid drops in a high-flux and large-scale manner. A step emulsification structure and a liquid drop splitting structure are used together, a liquid drop generation structure is arranged at the communication position of a branch splitting channel and a main channel unit correspondingly communicated with the branch splitting channel, a dispersion phase necks at the liquid drop generation structure under the action of interfacial tension to form liquid drops, and the liquid drops are generated under the leading of the interfacial tension, so that the dispersion phase is uniform in dispersion. Therefore, the size of the liquid drops is basically determined by the channel width of the liquid drop generation structure, the branch splitting channel is designed to be wide, the influence of manufacturing errors on the uniformity of the generated liquid drops can be reduced, the branch splitting channel is designed to be a plurality of serpentine channels, and the uniformity of the liquid drops is improved while high-flux liquid drop preparation is guaranteed; and then the liquid drops flow through the main channel unit and are converged into the main splitting channel, and the liquid drops are uniformly split into liquid drops with smaller sizes through the liquid drop splitting structure, so that the preparation of the liquid drops with high flux and uniform sizes is realized.

The invention discloses a method for preparing a thin-wall part with a snakelike hollow channel by adopting superplastic forming / diffusion bonding. The method comprises the following specific steps: step 1, plate preparation and surface cleaning treatment; and step 2, solder resist coating: using a mask plate to deposit on a specific area of the plate and coating the solder resist according to an S-shaped shape, and removing the protective adhesive tape after spraying is completed. And 3, assembling and sealing, wherein the plates are stacked according to the design sequence, the edges are sealed and welded, and an air inlet / outlet is reserved to be connected with an air pipe. And 4, heating is conducted, specifically, the assembly is put into a mold, then the mold is uniformly put into a superplastic forming machine tool, and heating is conducted till the plate superplastic forming temperature is reached. And fifthly, diffusion bonding is conducted, specifically, uniform pressure is applied to the mold through a pressing head in the superplastic machine tool, so that diffusion bonding combination is conducted on the contact face, not coated with the solder resist, of the plate at high temperature and high pressure, and a connecting rib is formed. And 6, superplastic forming / diffusion bonding is conducted, specifically, the temperature is kept, and high-pressure inert gas is introduced into the assembly through a reserved air inlet according to an air pressure loading curve. And the plate coated with the solder resist is subjected to superplastic deformation and is attached to a mold cavity, diffusion connection between the plates is completed in the area not coated with the solder resist, and finally the needed thin-wall part with the serpentine channel cavity is formed. And 7, cooling and demolding are conducted, specifically, the thin-wall part with the snake-shaped hollow channel is taken out after cooling to the room temperature, and the residual solder resist is cleaned.

A cooling circuit of an airfoil for a gas turbine engine includes a serpentine channel having a plurality of fluidly connected radially extending flow passages and a tip flag channel disposed adjacent to the serpentine channel. The tip flag channel includes a first tip flag passage extending radially and a second tip flag passage extending axially from a terminal end of the first tip flag passage, the second tip flag passage disposed radially outward of the serpentine channel. The second tip flag passage is in direct fluid communication with each of the first tip flag passage and a final passage of the serpentine channel.

The application discloses a kind of bionics proton exchange membrane fuel cell based on snowflake structure, including bipolar plate, bipolar plate includes the flow field on by 4 flow channel modules combination, each flow channel module includes serpentine channel with import and export, 4 flow channel modules on serpentine channel are sequentially connected to constitute bionic flow channel, flow channel is full in bipolar plate, and then the import of serpentine channel on the first flow channel module forms flow channel entrance, and the export of serpentine channel on the last flow channel module forms flow channel exit.The bionic flow channel of the device has good pressure drop, can make gas distribution uniform, improve the flow smoothness of flow channel, beneficial to discharge liquid water.

This invention discloses a nested serpentine channel liquid cooling plate and its battery thermal management system, belonging to the field of energy storage battery thermal management technology. The liquid cooling plate has a double-inlet, double-outlet serpentine flow channel inside, forming two parallel coolant flow paths to shorten the heat transfer path and improve temperature uniformity. A battery thermal management system includes a battery module composed of multiple square batteries and at least one liquid cooling plate, which is nested between the battery cells. Preferably, for a module composed of 20 square batteries, only three liquid cooling plates are used, respectively arranged on both sides and in the middle of the module, achieving a compact configuration of "one cooling plate cooling two battery cells". More preferably, the liquid cooling plate adopts an inlet / outlet direction of left-up-right-down and right-up-left-down, with a coolant mass flow rate of 1 g / s and an inlet temperature of 25°C. Experimental results show that at an ambient temperature of 45℃ and a discharge rate of 2C, the battery module's highest temperature is 28.75℃, the maximum temperature difference is 2.17℃, the voltage drop is 229.31Pa, and the comprehensive performance evaluation index PEC reaches 4.02. This invention significantly reduces system complexity, manufacturing costs, and flow resistance while ensuring efficient heat dissipation and excellent temperature uniformity, making it suitable for large-scale lithium iron phosphate energy storage modules.

The detachable antibacterial air filter element comprises a frame body and an air filter element body, lower snakelike strips are installed on the two sides of the interior of the frame body in the length direction, bottom rods connected with the lower snakelike strips are installed on the two sides of the interior of the frame body in the width direction, upper snakelike strips are arranged above the lower snakelike strips, and the lower snakelike strips are connected with the bottom rods. Top rods connected with the upper snakelike strips are arranged above the bottom rods, snakelike channels are formed between the upper snakelike strips and the lower snakelike strips, clamping channels are formed between the top rods and the bottom rods, the air filter element body is arranged in the frame body, and the two sides of the air filter element body in the length direction are inserted into the snakelike channels; and the upper snakelike strip and the lower snakelike strip are used for clamping and fixing. The air filter element is simple in structure, the sealing performance of the folding positions of the air filter element body can be guaranteed through clamping of the upper snakelike strip and the lower snakelike strip, the folding positions do not make contact with one another, all the folding positions are straightly arranged, it is avoided that air entering is affected due to the fact that the folding positions are attached or drawn close, and glue is not needed.

The present application discloses a slow-wave plate structure, comprising a waveguide radiation body, wherein the front end face of the waveguide radiation body is provided with a serpentine slow-wave groove, and one end of the serpentine slow-wave groove is provided with a feed signal end; a serpentine channel is formed in the serpentine slow-wave groove, the serpentine channel is connected to the feed signal end, the serpentine channel comprises a plurality of straight waveguide sections and connecting waveguide sections, a gap portion is present between two adjacent straight waveguide sections, and the two adjacent straight waveguide sections are connected by means of one connecting waveguide section; and the plurality of straight waveguide sections are provided with waveguide radiation gaps at intervals, or the waveguide radiation gaps are respectively provided in the plurality of straight waveguide sections. The present application has the advantages of simple structure, low cost, good radiation effect, wide application range, etc.

The invention provides a cascade viscoelastic micro-fluidic chip and a method for preparing, sorting and enriching circulating tumor cells. The cascade viscoelastic micro-fluidic chip comprises a cell sorting module, a transition section and a cell concentration module. The cell sorting module is composed of an inlet I, an inlet II, an annular bifurcated branch, a straight channel section I, an amplification section, a serpentine channel I and an outlet I; the cell concentration module is composed of a second straight channel section, a first bifurcation structure, a second serpentine channel, a second outlet, a third straight channel section, a second bifurcation structure, a third serpentine channel, a third outlet, a fourth straight channel section, a third bifurcation structure, a fourth outlet and a fifth outlet. The cell sorting module and the cell concentration module are cascaded through a transition section. The invention breaks through the bottleneck that the traditional sorting technology can be compatible with downstream biological analysis only by intervening manual centrifugation and other operations at the rear end, and can provide powerful technical support for developing a tumor liquid biopsy integrated system.

Disclosed in the present invention are a waveguide slot antenna and a control method therefor. The antenna comprises a feed port layer, a slow-wave line layer, and a radiation slot layer which are stacked in sequence; the feed port layer is provided with a feed port for inputting electromagnetic waves or outputting electromagnetic waves; one end face of the slow-wave line layer facing the feed port layer is provided with a serpentine slow-wave cavity, one end of the serpentine slow-wave cavity is provided with a feed signal end, and the feed signal end is correspondingly connected to the feed port; a plurality of waveguide radiation slots are arranged at intervals in a serpentine channel of the serpentine slow-wave cavity; and a plurality of radiation cavity units having one-to-one correspondence to the waveguide radiation slots are arranged at intervals on one end face of the radiation slot layer facing the slow-wave line layer, a plurality of radiation slots are arranged at intervals in each radiation cavity unit, and one end of each radiation cavity unit is provided with a signal connection end correspondingly coupled to the waveguide radiation slot. The present invention can increase the antenna scanning angle, thereby meeting application scenarios requiring a large antenna scanning range.

A feed trough for an electric arc furnace includes first and second arcuate plates, each having first and second opposing end edges and first and second opposing side edges, the first and second end edges including an arcuate contour, the first and second end edges of the first and second arcuate plates connected, and the first and second side edges of the first and second arcuate plates connected. A channel is disposed between the first and second end edges, the first and second side edges, and the inner surfaces of the first and second arcuate plates, the channel including at least one serpentine channel and at least one peripheral channel, the at least one serpentine channel being disposed toward a centerline of the feed trough, and the at least one peripheral channel being disposed outward of the at least one serpentine channel.

A redox flow battery includes at least one flow field including a plurality of serpentine channels to communicate electrolyte. Each of the serpentine channels define an inlet end, an outlet end, and a flow path fluidly connecting the inlet end with the outlet end. The serpentine channels are arranged in a parallel flow configuration.

Techniques for semiconductor processing including one or both of a showerhead and a pedestal configured for use of a flexible and malleable temperature probe are disclosed. The temperature probe is configured for installation into and removal from a serpentine channel provided in the showerhead, in some examples. In other examples, the temperature probe is configured for installation into and removal from a serpentine channel provided in the pedestal.

The invention discloses a microcolumn chip as well as a preparation method and a use method thereof, and relates to the technical field of biological chips. The microcolumn chip comprises a glass substrate and a PDMS chip arranged on one side of the glass substrate, a cell migration and deformation channel is arranged in the PDMS chip, and a plurality of microcolumns are arranged in the cell migration and deformation channel; the device further comprises a cell injection channel, the downstream of the cell injection channel is communicated with a cell calibration channel, and the cell calibration channel is communicated with the cell migration and deformation channel; the downstream of the Christmas tree-shaped channel is communicated with the cell migration and deformation channel, and the upstream of the Christmas tree-shaped channel is communicated with multiple groups of serpentine channels; according to the microcolumn chip, through the coupling design of the microcolumn channel and the stable chemical gradient, mechanical extrusion and chemotactic signals can be synchronously applied on the basis of simulating the real microenvironment of cells, high bionic simulation of single cell migration and deformation behaviors is achieved, and the limitation that an existing chip can only independently simulate the chemical gradient or mechanical compression is broken through.

The invention discloses a dual-channel snakelike cold plate coupled phase change material battery thermal management system, which comprises a plurality of batteries, a dual-channel snakelike liquid cooling plate and a phase change material, two snakelike channels are arranged in the liquid cooling plate, and the flowing directions of fluids in the two snakelike channels are opposite; a secondary flow channel is arranged between every two adjacent straight flow channels of the same serpentine channel, the tops or the bottoms of the batteries are tightly attached to the liquid cooling plate, the batteries are arranged into a plurality of rows one by one in the direction of the straight flow channels in the liquid cooling plate, a gap between every two adjacent batteries in each row is filled with a phase change material, and the thickness of the phase change material between every two adjacent batteries is non-uniform. The dual-channel snakelike cold plate coupled phase change material battery thermal management system has relatively low battery pack temperature difference and relatively small cold plate inlet and outlet pressure drop at the same time.

The application discloses a serpentine slow wave plate, which comprises a waveguide radiation body, a serpentine slow wave groove is arranged on the front end surface of the waveguide radiation body, and a feeding signal end is arranged at one end of the serpentine slow wave groove; a serpentine channel is formed in the serpentine slow wave groove, the serpentine channel is connected with the feeding signal end, the serpentine channel comprises a plurality of straight waveguide segments and connecting waveguide segments, a gap part is arranged between two adjacent straight waveguide segments, and the two adjacent straight waveguide segments are connected through the connecting waveguide segments; waveguide radiation slots are arranged at intervals in the plurality of straight waveguide segments or are respectively arranged; the center line of the straight waveguide segment is arranged in a staggered mode with the center line of the corresponding waveguide radiation slot; and the center lines of the plurality of waveguide radiation slots have different offset amounts. The application has the advantages of simple structure, low cost, good radiation effect, wide application range and the like.

The invention relates to the field of mechanical manufacturing, and discloses a bearing production automatic conveying tool which comprises a supporting frame, a fixing plate is arranged at the top end of the supporting frame, conveyors are arranged on the two sides of the fixing plate correspondingly, working platforms are arranged on the two sides of the top end of the fixing plate correspondingly, and side frames and two discharging assemblies are arranged on one sides of the two working platforms correspondingly. And the discharging assemblies are arranged on the surfaces of the two working platforms correspondingly and used for bearing input bearings and achieving switching conveying of the bearings to the conveyors on the two sides, the discharging assemblies comprise material conveying shells, the material conveying shells are fixedly installed on the surfaces of the working platforms, S-shaped channels are formed in the material conveying shells, and feeding ports are formed in the top ends of the S-shaped channels. Flexible shunting of a conveying line is achieved through overturning of the flow guide plate, the blocking problem is solved through air hole anti-skid and vibration knocking, meanwhile, the conveying stability and statistical convenience are guaranteed through shifting strip buffering and photoelectric sensor counting, and the production flexibility and efficiency are improved.

The present invention relates to the technical field of rapping shaft sealing for electrostatic precipitators. Disclosed is a rapping shaft sealing device for an electrostatic precipitator. The rapping shaft sealing device comprises: an electrostatic precipitation assembly, which comprises an electrostatic precipitator housing and a rapping shaft body arranged on the electrostatic precipitator housing; an outer sealing assembly, which comprises a base mounted and arranged on the electrostatic precipitator housing, a sealing outer sleeve arranged on the base, and a sealing cavity formed in the sealing outer sleeve; and an inner sealing assembly, which comprises an inner sealing portion arranged in the sealing cavity and sealing rings arranged in a sleeved manner in the inner sealing portion, wherein the sealing rings are sleeved on the rapping shaft body, and a sealing medium is provided between the sealing outer sleeve and the inner sealing portion. The inner sealing portion is capable of rotating synchronously with the rapping shaft body by means of cooperation with the sealing rings and the rapping shaft body, the multiple stages of sealing rings are capable of blocking airflow between the sealing inner sleeve and the rapping shaft body, and the sealing medium and multiple stages of serpentine channels work together to form a seal, thereby isolating the passage of external air to the greatest extent.

The application relates to the field of mechanical manufacturing, and discloses an automatic conveying tool for bearing production, which comprises a support frame, the top end of the support frame is provided with a fixed plate, the two sides of the fixed plate are provided with conveyors, the two sides of the top end of the fixed plate are provided with work platforms, the one side of each of the two work platforms is provided with a side frame, two blanking assemblies are arranged on the surfaces of the two work platforms respectively, are used for receiving input bearings and realize switching conveying to the two conveyors, the blanking assembly comprises a material conveying shell, the material conveying shell is fixedly installed on the surface of the work platform, a serpentine channel is arranged in the material conveying shell, and a feeding port is arranged at the top end of the serpentine channel. The flexible shunting of the conveying line is realized through the overturning of the flow guide plate, the blockage problem is solved by means of the anti-skid air holes and vibration knocking, the conveying stability and the statistical convenience are guaranteed by utilizing the buffer of the poking strip and the photoelectric sensor counting, and the production flexibility and efficiency are improved.

The micro-fluidic chip comprises a shell, a sample adding hole and a micro-channel located in the shell, the shell comprises an upper cover plate and a bearing substrate, the upper cover plate and / or the bearing substrate are / is provided with a sunken space used for forming the micro-channel, and a sample adding area, a liquid storage area, a reaction area, a detection area and a waste liquid area which are sequentially communicated through the micro-channel, the liquid storage area is provided with a liquid storage bag, staining fluid is stored in the liquid storage bag, the reaction area is a snake-shaped channel, the staining fluid is released by the liquid storage area while a sample is added through the sample adding hole, and the staining fluid is pushed by the sample to enter the snake-shaped channel and is mixed in the snake-shaped channel. According to the device, slide pollution is avoided through integrated operation, meanwhile, the operation of dyeing and uniform mixing is achieved through the S-shaped channel, the operation is simple and convenient, instrument modules of full-automatic microscopic examination instruments can be simplified, the steps of dyeing and uniform mixing can be reduced, and therefore the time of the whole experiment process is shortened, and the detection efficiency is improved.

A redox flow battery includes at least one flow field including a plurality of serpentine channels to communicate electrolyte. Each of the serpentine channels define an inlet end, an outlet end, and a flow path fluidly connecting the inlet end with the outlet end. The serpentine channels are arranged in a parallel flow configuration.