25results about How to "Prevent channeling" patented technology

The microswitch is characterized in that a housing is provided with an accommodating cavity, and a first conducting strip, a second conducting strip and a third conducting strip are accommodated in the accommodating cavity; the driving piece is contained in the containing cavity and comprises a pressing part and a fixing part, the pressing part is connected with the fixing part, the pressing part penetrates through the shell and extends to the outside, and the fixing part is provided with a fixing cavity; the reset piece is contained in the containing cavity, abuts against the driving piece and gives reset force to the driving piece; the reed assembly is contained in the fixing cavity, one end of the reed assembly is electrically connected with the first conducting strip, a first clamping groove is formed in the other end of the reed assembly, the second conducting strip and the third conducting strip are both located on the motion trail of the first clamping groove, and the reed assembly is detachably connected with the driving part; the reed assembly is installed in the fixing cavity, the linkage effect between the reed assembly and the driving piece is achieved, the reed assembly and the driving piece are detachably connected, assembling is more convenient and simpler, and therefore the assembling efficiency is improved.

The utility model provides a modularized fluorine ion exchange column, which adopts a column body structure formed by connecting a plurality of sections of flanges to realize height adjustability and adapt to different fluorine concentration and flow requirements. Spiral flow guide ribs are arranged in the column to guide wastewater to spirally flow, fluid distribution is optimized through centrifugal force, and the fringe effect is reduced; the assembling precision between the columns is ensured through a concave-convex positioning mechanism, and the corrosion resistance is enhanced by matching with a polytetrafluoroethylene lining. The system integrates a water distribution plate and funnel combined structure, realizes flow equalization through groove water distribution holes, eliminates a bias flow phenomenon, and improves the resin utilization rate. And the saturation of the resin can be observed at any time through fluorine ion color-changing exchange resin and an observation window. The resin bracket is of a pull ring type quick release structure, and quick maintenance is achieved through a tap bolt and a sealing ring annular groove. According to the device, through modular combination, flow field optimization and visual monitoring, the fluorine ion deep purification efficiency and the operation convenience are remarkably improved.

The utility model discloses wastewater recycling equipment which comprises a vertical frame, and a lower area for mounting a plurality of groups of water collecting tanks and an upper area for mounting a filter tank are arranged in the vertical frame; a water path assembly is installed outside the vertical frame and comprises a one-inlet and two-outlet front-stage pipeline and a two-inlet and two-outlet rear-stage pipeline communicated behind the front-stage pipeline, and a water pump is correspondingly arranged at the two connecting points of the front-stage pipeline and the rear-stage pipeline. Two paths of output ends of the rear-stage pipeline are communicated with diffusion discs which are positioned in the filter box and are used for dispersing water flow in a one-to-one correspondence manner; the two diffusion discs are distributed at high and low positions, and a filtering piece is laid below each diffusion disc; the lower parts of the filter tanks are communicated with the water collecting tanks through conveying pipelines one by one. The utility model aims to solve the two core technical problems of low efficiency, difficulty in maintenance, poor system reliability and limited processing capacity caused by non-uniform water distribution.

The invention provides a control method and device of a circulation pipeline and a readable storage medium, and relates to the technical field of heat management. The method comprises the steps that the state of fluid in the pipeline is detected to obtain a detection value, and the rotating speed of the first circulating pump and the rotating speed of the second circulating pump are controlled according to the detection value to prevent fluid channeling between the first fluid supplementing opening and the second fluid supplementing opening through the expansion device. According to the control method, fluid channeling possibly occurring between the first fluid supplementing opening and the second fluid supplementing opening can be prevented, or the fluid channeling phenomenon between the first fluid supplementing opening and the second fluid supplementing opening can be improved or eliminated when fluid channeling occurs.

The present invention discloses a method for accurate infinite segmented fracturing of common oil pipes, including step S1, accurate division of horizontal well fracturing sections; step S2, accurate perforation by hydraulic jetting of common oil pipes; step S3, continuous multiple sand addition and accurate fracturing; step S4, accurate displacement and shut-in to measure pressure drop; step S5, lifting the pipe column and adding bottom seal to perform next segment fracturing. The accurate segmented wireless fracturing technology of the present invention does not require temporary plugging agents or other complex downhole tools during the entire process, and can be conveniently fracturing at any position of the horizontal well section, ultimately ensuring that each position to be fractured can form a main fracture and can be completely filled with proppant, so that each section of the reservoir to be transformed can be truly supported, forming a complete supporting fracture network system for the entire well section. The present invention has simple steps, fast construction speed, no need for lifting and lowering tools, no need for temporary plugging agents, low construction cost, reliable method, can effectively complete the accurate construction of each section, and improve construction efficiency.

The utility model discloses a compact air flotation device, which relates to the technical field of petroleum and natural gas treatment and comprises an oil-water separation barrel, an oil collection barrel is erected in the middle of an inner cavity of the oil-water separation barrel, a water collection barrel is arranged on the outer surface of the oil collection barrel, and meanwhile, an oil collection barrel is arranged on the outer surface of the water collection barrel. After the liquid level in the oil collecting barrel continuously rises, separated oil in the oil collecting barrel enters the oil discharging cavity through the special-shaped pipe, and the electromagnetic control valve on the oil phase outlet is opened after the liquid level sensor detects the high liquid level and is closed after the liquid level is reduced to the low liquid level, so that the low-frequency switching type operation mode of the electromagnetic control valve on the oil phase outlet is maintained; valve sealing elements are effectively protected, and the service life of the valve is greatly prolonged. Meanwhile, as the oil discharge cavity is large in size and large in liquid storage amount, the oil discharge cavity can adapt to various treatment capacity changes, liquid seal in the oil discharge cavity of the oil-water separation barrel is effectively formed, and gas covered in the oil-water separation barrel is prevented from channeling to downstream waste oil collection equipment.

This utility model discloses a telescopic compensation type layered water injection sealing device, which includes a rubber sleeve and a spring. The upper and lower rubber sleeves, installed outside the upper and lower water injection pipes respectively, have hydraulic chambers one and two connected by a connecting hose. A pressure transmission hole in the upper water injection pipe, connected to hydraulic chamber one, is connected to a hydraulic pump on the ground via a hydraulic pipeline. The upper and lower water injection pipes are connected by a telescopic compensation mechanism. The spring is installed between the sealing cylinder and the telescopic sleeve in the telescopic compensation mechanism. The upper water injection pipe, sealing cylinder, corrugated pipe, sealing sleeve, and a fixing ring installed outside the lower water injection pipe and below the telescopic sleeve are sequentially fixedly connected. The lower water injection pipe can move up and down within the telescopic sleeve and the fixing ring. The telescopic compensation mechanism absorbs vibration energy generated during water injection and compensates for sealing gaps. This device is suitable for high-efficiency layered water injection tubing in oilfield development, providing vibration and creep prevention effects.

The utility model belongs to the technical field of alkannin extraction, in particular relates to an alkannin extraction system, and aims to solve the problems of low extraction efficiency and unsmooth liquid drainage caused by difficulty in uniformly and circularly spraying layered materials in a temperature-pressure coordinated and controllable closed environment and easiness in blockage of a liquid outlet at the bottom of a tank in the conventional alkannin extraction device. According to the scheme, the extraction device comprises an extraction tank, a storage screen frame, an electric heating wire, a liquid spraying ring and a liquid spraying pipe, the pressure in the tank is adjustable in a stepped mode through a pressurization assembly, and the temperature in the tank is adjustable in a stepped mode through the electric heating wire; the bottom end of the liquid spraying pipe is connected with a pressing sleeve pipe, the tank bottom is connected with an alignment bottom pipe, the pressing sleeve pipe is movably inserted into the alignment bottom pipe, a pipe body of the pressing sleeve pipe is provided with filter screen holes, a pipe body of the alignment bottom pipe is provided with a liquid passing notch, and the positions of the pressing sleeve pipe and the alignment bottom pipe are adjustable. According to the utility model, efficient extraction and convenient cleaning of alkannin are realized through temperature and pressure stepped cooperative control, internal and external dual-circulation spraying and a tank bottom filtering structure capable of switching an extraction mode and a cleaning mode.

The invention relates to the technical field of industrial wastewater regeneration treatment, and discloses a phosphoric acid wastewater deep purification device based on an adsorption regeneration structure, the phosphoric acid wastewater deep purification device comprises a placing part, the placing part comprises a tank body, the bottom of the tank body is fixedly provided with a supporting seat, and the bottom of the tank body is fixedly communicated with a communicating pipe; and the other end of the communicating pipe is fixedly communicated with an RO membrane tank. The phosphoric acid wastewater deep purification device based on the adsorption regeneration structure can effectively solve the problems that in the prior art, an adsorbent supporting layer of a traditional wastewater purification device is of a fixed plane structure, the straight surface cannot play an effective role in guiding, retarding or dispersing falling wastewater, and consequently the wastewater cannot be effectively purified under the action of gravitational potential energy. The problem that soluble phosphate is difficult to fully intercept due to the fact that a path with the minimum natural selection resistance vertically falls, the phenomena of vertical direct discharge and short flow easily occur, the wastewater purification path is short, the contact time of wastewater and an adsorbent is short and the utilization rate of the adsorbent is low in the prior art is solved.

According to the rotary table cooling structure, a rotary table comprises a rotary table shell, an inner shaft, a rotary outer sleeve rotationally arranged on the periphery of the inner shaft, a switching core shaft, a center shaft, a rotary table bearing and a working channel arranged between the inner shaft and the rotary outer sleeve, and the cooling structure comprises a water inlet channel, a water outlet channel and a leakage channel. A water inlet channel and a water outlet channel penetrate through and surround the inner shaft, the rotating outer sleeve, the switching core shaft and the center shaft, a sealing structure is installed between the inner shaft and the rotating outer sleeve, the water inlet channel and the water outlet channel can surround and penetrate through the center structure of the rotary table, and the inner shaft, the rotating outer sleeve, the switching core shaft, the center shaft and a rotary table bearing are cooled. According to the rotary table, heating of the rotary joint of the rotary table can be effectively reduced, machining precision and accuracy are improved, the working channel and the cooling channel are separated by arranging the sealing structure, and the problem that a cooling medium used for cooling the rotary table and a working medium of the rotary joint run through a cavity is solved.

The application discloses a true triaxial hydraulic fracturing seepage liquid collecting and boundary regulating device and an analysis method, which comprises six partitioned flow guide loading plates, six sets of boundary pressure regulating units, a high-precision metering device and a data acquisition system. The inner side of each loading plate is provided with a flow guide groove network and a flexible rubber ring, which are used for independently guiding the seepage liquid on the six surfaces of the sample to a liquid collecting cavity. The collecting pipeline is provided with a three-way joint, which is connected with the liquid outlet hole, the metering balance and the regulating unit respectively, so that the real-time metering of the seepage liquid and the regulating of the boundary pressure are synchronously performed; the regulating unit adjusts the internal pressure of the pipeline, and six directions can be independently set to construct a homogeneous or inhomogeneous boundary field. The data acquisition system records the injection parameters, the boundary pressure and the seepage liquid parameters, calculates the fracturing efficiency according to the flow conservation, and determines the preferential expansion direction of the crack in combination with the seepage response characteristics of each direction. The application realizes the independent metering of the seepage liquid on the surface and the flexible regulating of the boundary, avoids the pollution of the equipment, and improves the evaluation precision of the fracturing efficiency.

The invention belongs to the technical field of flue gas purification, and particularly relates to a powder catalyst circulating entrained-flow bed denitration method and equipment which are suitable for low-temperature flue gas, adopt a powder catalyst and realize cyclic regeneration. The method comprises the following steps: spraying a new powdery catalyst and a reducing agent to a mixing section of the elbow flue to be fully mixed with flue gas; in the reaction section of the bent pipe flue, the new catalyst, the reducing agent and the flue gas are subjected to selective catalytic reduction reaction, and NOx in the flue gas is converted into N2 and H2O; and the reacted clean flue gas carries the catalyst to enter the dust removal and recovery mechanism, so that the clean flue gas is separated from the catalyst. The conveying bed process is innovatively adopted, the equipment structure is simple, the system pressure drop is low (smaller than or equal to 1000 Pa), the catalyst particle collision rate is low, efficient circulation and online regeneration of the catalyst are supported, low-temperature efficient denitration can be achieved, and the device has the advantages of being stable in operation, low in energy consumption and easy and convenient to maintain.

The utility model discloses a kind of cooling tower fillings PVC sheet with improved corrugated structure, it is related to cooling tower cooling appliance technical field, including layer by layer stacked cooling plate, the top surface and bottom surface of cooling plate are installed with multiple film-coated strips, and film-coated strip is installed with guiding mechanism and the assembling mechanism of being convenient for cooling plate stacking;The utility model is coated by foaming layer on film-coated strip and cooling plate surface, it is convenient for foaming layer expansion after being heated, on one hand, the contact area of water and air can be increased, on the other hand, when foaming layer expands, surface scale will be extruded, it is favorable to ensure the cleanliness of cooling plate surface, improve cooling speed and cooling effect;Again through the cooperation of first deflector and second deflector, it is convenient for improving the flow speed of air and water, avoid the occurrence of channeling phenomenon, improve the utilization of filler;Finally solve the problem that existing device surface scale leads to poor cooling effect and low filler utilization.

The invention discloses a device for online updating treatment of packing of turbulent ball towers, and relates to the technical field of waste gas treatment.The device comprises a plurality of turbulent ball towers, an ultrasonic cleaning pool and a drying and screening all-in-one machine, and ball taking openings of the multiple turbulent ball towers are provided with pipelines connected with the ultrasonic cleaning pool; by means of the design of the multiple turbulent ball towers, when the turbulent ball filler of one turbulent ball tower is replaced, the other turbulent ball towers are still in the running state, after one flue gas pipe is closed, the other turbulent ball towers are still in the running state, and after the other flue gas pipe is closed, the other turbulent ball towers are still in the running state. When the turbulent ball tower is in use, residual flue gas in the header pipe is loaded by other turbulent ball towers, so that the whole device is kept to run stably, the surge and channeling caused by large working condition change are avoided, the online updating treatment of the turbulent ball tower filler can be realized, the available turbulent ball filler is recycled, and the production running cost is further reduced.

The utility model provides a steam extraction check valve, and belongs to the technical field of check valves, the steam extraction check valve comprises a valve body, the valve body comprises an inlet flow channel, a valve cavity and an outlet flow channel, a valve rod is transversely fixed in the valve cavity, a valve clack is rotatably arranged on the valve rod, a mounting groove is formed in one end, close to the valve cavity, of the inlet flow channel, and a base ring, a valve seat ring and a fixing ring are arranged in the mounting groove; an elastic sealing ring is arranged between the base ring and the valve seat ring, the outer ring of the elastic sealing ring is closed, the inner ring of the elastic sealing ring is provided with an opening gradually expanding towards the center of the mounting groove, the two side walls of the opening abut against the base ring and the valve seat ring respectively, and an elastic piece abuts against the interior of the opening. The elastic sealing ring with the opening is arranged between the base ring and the valve seat ring, impact energy generated when the valve clack is closed can be absorbed, meanwhile, the elastic sealing ring in the special shape can form more reliable sealing with the two side portions under medium impact, and medium fluid channeling is avoided.

The invention provides high-speed mixed bed equipment for fine treatment of condensed water of a thermal power plant, and belongs to the field of water treatment of the thermal power plant, the high-speed mixed bed equipment comprises a regeneration system, a control system and a high-speed mixed bed, the high-speed mixed bed is communicated with the regeneration system, and the regeneration system and the high-speed mixed bed are both electrically connected with the control system. According to the high-speed mixed bed equipment, the water distribution uniformity is remarkably improved, so that the utilization rate and the periodic water control amount of resin are remarkably improved, and the stability of the effluent quality is improved; the resin abrasion is reduced, the service life of the resin is prolonged, and the operation cost is reduced; the regeneration efficiency is improved, the consumption of a regeneration agent is reduced, and the discharge of regeneration wastewater is reduced; the equipment cost and the maintenance workload are reduced; the operation flexibility and reliability of the system are improved; and a modular design is adopted, so that capacity expansion and transformation are facilitated.

The present invention is a double filter cartridge cyclone VOCs adsorption method based on modified fly ash material, and particularly relates to a new VOCs treatment process that can recover useful VOCs components and has reusable adsorbents. The present invention adopts an inner and outer double filter cartridge filtration structure, the inner filter cartridge is a circular cylindrical shape, and the outer filter cartridge is a circular cone shape. The molded particles or plate-type modified fly ash material is used as the adsorbent. The exhaust gas enters the filter cartridge interlayer airway tangentially, and passes through the inner and outer filter cartridges while rotating and rising, so that the VOCs components therein are adsorbed and purified. The adsorbent can be regenerated after penetration, and the VOCs components in the regenerated exhaust gas are recycled again through condensation, fractionation and other technologies. The double filter cartridge adsorption assembly is an integrated module, and the adsorbent can be replaced as a whole after failure. The present invention has the characteristics of good adsorption effect, large filtration area, uniform adsorption pressure distribution, compact device structure, small footprint, low adsorbent cost, high utilization rate, and can be regenerated and reused multiple times.

The invention relates to a device and method for removing residual liquid on the surface of a plate strip. Specifically, a first wringing roller is adopted for carrying out primary roller type wringing treatment on the plate strip; on the outlet side of the first wringing roller, airflow at the outlet of the first wringing roller is guided through rotation of the first wringing upper roller and an arranged upper air guide plate, so that the situation that liquid on the side roller gap side flows towards the middle roller gap side is improved; and compressed air is blown to an outlet of the first wringing roller, so that the air pressure of the middle roller gap side is larger than that of the side roller gap side, and liquid channeling caused by air flow of the side roller gap side is prevented. According to the residual liquid removing device, through interaction of the first wringing roller, the air guide unit, the compressed air compensation unit and other structures, the residual liquid removing effect is guaranteed, meanwhile, the compressed air consumption is remarkably reduced, the production cost is saved, and the production environment is improved.

This disclosure relates to the technical field of fillers. One embodiment of this disclosure provides a high specific surface area and high film-forming PTFE filler, comprising: a plurality of laying frames, a connecting assembly disposed between the laying frames, a filler treatment assembly disposed in the laying frames, the filler treatment assembly including an outer wall inserted into the laying frames, an inner wall disposed within the outer wall, a plurality of outer attachment plates connected between the inner and outer walls, a plurality of outer rings fitted inside the outer attachment plates, a plurality of inner attachment plates disposed around the inner surface of the inner wall, a plurality of inner rings fitted inside the inner attachment plates, and the connecting assembly including a plurality of connecting ears disposed on both sides of the laying frames, a splicing rod inserted into the connecting ears, and a plurality of limiting rings fitted on the splicing rod. This technical solution solves the technical problems of poor performance and inconvenient laying in the prior art.

This utility model relates to the field of waste heat recovery technology for air compressors, and discloses a waste heat recovery system for air compressors. The heat exchange medium inlet of the heat exchange tube bundle on the waste heat recovery heat exchanger is connected to the exhaust port of the air compressor body. The heat exchange tube bundle is spiral-shaped and has a horizontal U-shaped structure. The inlet and outlet of the heat medium on the waste heat recovery heat exchanger are connected to the outlet of the circulating water pump and the inlet of the heat storage tank, respectively. The waste heat recovery heat exchanger is divided into upper and lower layers by a partition component. Each of the upper and lower heat exchange chambers is equipped with baffles that match the spiral direction of the heat exchange tube bundle. The heat exchange tube bundle increases the contact area and contact time between the heat medium and the heat exchange medium, while the baffles guide the flow of the heat medium and increase the heat exchange contact time within the waste heat recovery heat exchanger. Through the orderly flow channel, baffles, and spiral tube bundle design, heat exchange efficiency is improved and the medium contact time is extended, achieving energy saving, consumption reduction, and space saving.

The invention discloses a combined inner container of a zanthoxylum oil supercritical extraction tower, and aims to provide a zanthoxylum oil supercritical extraction tower which is simple in structure, convenient in material replacement and good in extraction effect. The device comprises an inner container positioned in a tower body, the inner container is of a combined structure formed by stacking a plurality of material baskets (3). Each material basket (3) is composed of a basket body (3-3) and a basket cover (3-2), wherein a plurality of meshes are distributed in the surface of the basket body (3-3), the basket cover (3-2) closes an upper end opening of the basket body, and a plurality of meshes are distributed in the surface of the basket cover (3-2). The bottom of each basket body (3-3) is of an inverted conical surface structure, and a sealing ring (4) is fixed on the outer circumferential surface of each basket body (3); and an annular support frame (3-1) is fixed on the surface of the basket cover (3-2). The plant height does not need to be increased, the installation and use cost is low, loading and unloading are convenient, the extraction effect is good, and materials are not deposited and hardened. The improved structure of the liner of the zanthoxylum oil supercritical extraction tower is provided.

The utility model discloses a damping pendulum type liquid uniform distributor for rectification, which belongs to the technical field of rectification and comprises a liquid collecting tray, a pendulum mechanism and a liquid distributing tray, a vent hole pipe is arranged on the liquid collecting tray, a liquid falling pipe is arranged in the center of the liquid collecting tray, and rectangular liquid flow holes are uniformly distributed on the wall of the liquid falling pipe. The pendulum mechanism comprises a pendulum supporting plate, a pendulum upper ball, a pendulum supporting rod and a clock pendant, the pendulum upper ball is arranged on the pendulum supporting plate and connected with the pendulum supporting rod, the mode that horizontal and uniform distribution is kept generally depending on mechanical matching connection is broken through, a split structure is adopted, the gravity center of the liquid distribution disc is controlled in the natural state in a pendulum mode, and therefore the liquid distribution disc is more uniform in distribution. By means of the design, the requirements for machining and mounting precision are reduced, even if slight deviation exists in actual operation, automatic adjustment can be conducted through the pendulum mechanism, it is ensured that liquid is evenly distributed, the wall flow and channeling phenomena are effectively avoided, and the rectification efficiency and the product quality are improved.

An internal combustion engine air intake system and a vehicle equipped with the system, the air intake system includes two air intakes, which are evenly distributed on both sides below a hood of an internal combustion engine, and each air intake is in a flat square shape, and the front section of the air intake is convergent from front to back, and air guide holes are provided at the hood and center grille of the internal combustion engine corresponding to the air intakes, the lateral distance of a single flat square air intake occupies half of the lateral distance of the front of the vehicle, and the two air intakes are distributed close to the lateral middle position of the front of the vehicle, wherein the air intake direction of the air intake is toward the front of the vehicle, and the air intake channel behind the air intake is deflected downward after entering the inner cabin of the internal combustion engine, so as to solve the shortcomings of low air intake efficiency and low dirt removal ability of the air filter intake system of the existing internal combustion engine intake system vehicle under high power state of the internal combustion engine.

The invention belongs to the technical field of chemical waste gas treatment, and particularly relates to chemical waste gas treatment equipment which comprises a treatment box, the upper end of the treatment box is fixedly communicated with a filter box, the interior of the filter box is fixedly connected with a partition plate, and activated carbon adsorption nets are fixedly connected between the two side walls of the partition plate and the inner wall of the filter box; the two groups of flow guide assemblies are symmetrically arranged on the two sides of the partition plate and used for uniformly conveying waste gas to the position above the activated carbon adsorption net, and each group of flow guide assembly comprises two rotating rods rotationally connected between the inner walls of the two sides of the filter box. By arranging the flow guide assembly, when waste gas is treated, impact force generated by gas flowing during waste gas conveying drives two flow guide plates to swing in opposite directions in a reciprocating mode, waste gas is evenly conveyed to an activated carbon adsorption net, and it is ensured that the waste gas can be evenly distributed when passing through the activated carbon adsorption net; adsorbents in some areas of the activated carbon adsorption net are prevented from reaching a saturation state too early.

The utility model provides a molecular sieve adsorber bed layer structure based on johnson net, through setting the johnson net of specific mesh size as gas distributor under adsorbent bed layer, and can optionally embed the johnson net support layer in the inside bed layer, effectively solved the traditional adsorber airflow distribution uneven, high pressure drop, low regeneration efficiency technical problem. The structure utilizes the high open area of johnson net and the wedge shape silk self -cleaning characteristic, significantly improved the gas distribution uniformity, reduced the system energy consumption, simultaneously through the clearance cooperation of optimization net layer and adsorbent counter current regeneration process, makes the desorption efficiency to improve 15% or above, realized the synchronous promotion of adsorption capacity and regeneration efficiency.