93results about How to "Prevent overpressure" patented technology

The utility model relates to a pre-charging circuit and an energy storage power supply, in the pre-charging circuit, a control module samples an input voltage of an input power supply and outputs a first control signal to a second switch module and a pre-charging protection module when the input voltage is within a preset range; the second switch module is switched on when receiving the first control signal to control the first switch module to be switched on, so that the input power supply supplies power to the load through the first switch module and the pre-charging resistor; when the pre-charging protection module receives the first control signal, the pre-charging protection module transmits the first control signal to the third switch module after delaying a preset time; and the third switch module is switched on when receiving the first control signal to control the power supply on-off module to be switched on, so that the input power supply supplies power to the load through the power supply on-off module, and meanwhile, the input power supply does not supply power to the load through the first switch module and the pre-charging resistor. According to the invention, the circuit can be prevented from being damaged due to overvoltage during pre-charging, and the safety of the circuit is improved.

The invention discloses a method for realizing carbon dioxide emission reduction in a catalyst regeneration process, regenerated flue gas is subjected to dust removal and pressure reduction to obtain low-pressure flue gas, the low-pressure flue gas is divided into a first flue gas material flow and a second flue gas material flow, the first flue gas material flow is subjected to heat exchange, denitration and desulfurization dust removal treatment to obtain desulfurized flue gas, and the desulfurized flue gas is subjected to heat exchange, denitration and desulfurization dust removal treatment to obtain a second flue gas material flow; water vapor in the desulfurized flue gas is removed to obtain low-humidity flue gas, part of the low-humidity flue gas serves as circulating flue gas to participate in catalyst regeneration, part of the low-humidity flue gas and hydrogen are subjected to a combustion reaction, deoxidized flue gas is obtained, and high-concentration carbon dioxide is obtained after the deoxidized flue gas is dehydrated; the second flue gas material flow is subjected to heat exchange with the circulating flue gas or is returned together with the circulating flue gas to participate in catalyst regeneration or is mixed with the first flue gas material flow in the denitration process, and heat exchange, desulfurization and dust removal are continued to obtain desulfurized flue gas. The method solves the problems of large total carbon dioxide emission, low carbon dioxide concentration and high trapping cost of a hydrocarbon processing device in the prior art.

When the hydraulic system stops working, a hydraulic pump set stops, a proportional throttle valve is opened to enable an oil inlet pipeline to be communicated with a backflow pipeline, high-pressure oil in a high-pressure energy accumulator set gradually flows to the backflow pipeline through the proportional throttle valve, and the high-pressure oil in the high-pressure energy accumulator set flows to the backflow pipeline through the proportional throttle valve. And when the pressure in the oil inlet pipeline is reduced to the inflation pressure of the high-pressure energy accumulator group, the cartridge valve is opened, so that high-pressure oil in the oil supply pipeline and the hydraulic pump group completely flows back to the oil tank through the cartridge valve. By means of the method and system, stable pressure relief and unloading can be conducted on a high-pressure and ultra-large-flow hydraulic system, huge high-pressure liquid energy accumulated in a high-pressure pipeline and a high-pressure energy accumulator is gradually and stably relieved, impact vibration and noise are effectively reduced, and therefore it is guaranteed that a heavy equipment hydraulic transmission system works stably, reliability is high, and the service life is long.

The utility model relates to a boil-off gas reliquefaction system of a low-temperature container. The boil-off gas reliquefaction system comprises a storage tank, a low-temperature liquid supply unit, a heat exchange unit and an overpressure prevention unit. The low-temperature liquid supply unit comprises a low-temperature liquid storage tank. The heat exchange unit is arranged in the storage tank and located in the gas phase space of the storage tank, and a liquid inlet of the heat exchange unit communicates with the liquid phase space of the low-temperature liquid storage tank. The overpressure prevention unit is used for detecting the pressure in the storage tank and adjusting the amount of low-temperature liquid supplied to the heat exchange unit by the low-temperature liquid supply unit according to the pressure change in the storage tank. Due to the fact that the heat exchange unit is installed in the storage tank, the liquid which is liquefied again after heat exchange can flow back to the liquid phase space of the storage tank under the action of the gravity of the liquid. Therefore, a boil-off gas leading-out pipeline and a liquid backflow pipeline do not need to be designed, the system structure is simplified, and cost is greatly saved. The heat exchange capacity of the heat exchange unit can be adjusted through the overpressure prevention unit so as to adjust the pressure in the storage tank, overpressure of the storage tank is prevented, and the system stability is improved.

The invention discloses a fan speed regulation device. The fan speed regulation device comprises a voltage conversion circuit, a rotating speed control circuit, a sampling circuit and an input regulation end, the voltage conversion circuit is electrically connected with the rotating speed control circuit; the rotating speed control circuit is electrically connected with the sampling circuit, the input adjusting end and the controlled fan. Wherein the voltage conversion circuit is used for converting an external input voltage into a first preset voltage and a second preset voltage; the input adjusting end is used for receiving external input and generating a rotating speed adjusting instruction; the rotating speed control circuit is used for responding to the rotating speed adjusting instruction and generating rotating speed adjusting voltage and rotating speed adjusting current; the sampling circuit is used for collecting the rotating speed adjusting voltage and the rotating speed adjusting current output by the rotating speed control circuit. Different rotating speed adjusting instructions are generated through the input adjusting end, so that the rotating speed control circuit can generate different voltages and currents to carry out precise speed adjusting control on the fan.

The invention provides an artificial respiration device for nursing in the respiratory medicine department, and belongs to the technical field of medical instruments. Comprising an air supply part, a negative pressure generation part is installed on the air supply part, and a tongue positioning part is installed on the negative pressure generation part; the negative pressure generating piece is used for controlling the tongue positioning piece to suck air; an overpressure exhaust part is mounted on the air supply part; the overpressure exhaust part is used for preventing excessive expiration; an air channel detection piece is mounted on the air supply piece; and the air passage detection piece is used for detecting the smoothness of the air passage. The tongue positioning piece can be matched with the negative pressure generating piece, the tongue of a patient is automatically controlled, dragged and positioned when artificial respiration is carried out on the patient, the tongue of the patient can be kept to be separated from the palate of the patient, and smooth artificial respiration is guaranteed; the problems that an existing artificial respiration device is inconvenient to detect airway smoothness, and the tongue of an unconscious patient is prone to blocking the airway are solved.

The invention relates to a hydrogen storage system control method, a hydrogen storage system control device, a medium and equipment for a synthetic ammonia process, which can stabilize water electrolysis hydrogen production fluctuation, optimize hydrogen storage scale and improve safety and economy. The method comprises the following steps: acquiring real-time hydrogen storage pressure of a hydrogen storage system; according to the real-time hydrogen storage pressure and preset pressure parameters including a first preset pressure threshold value, a second preset pressure threshold value and a third preset pressure threshold value, the synthesis ammonia hydrogen consumption amount is controlled to be within a preset hydrogen consumption amount range, so that the hydrogen storage system reaches a target operation state, and the preset pressure parameters include the first preset pressure threshold value, the second preset pressure threshold value and the third preset pressure threshold value. The first preset pressure threshold value is smaller than the second preset pressure threshold value, and the second preset pressure threshold value is smaller than the third preset pressure threshold value.

The invention relates to the technical field of screw superchargers, in particular to a single-screw supercharger which comprises a gas filter, an unloading valve, a main machine and a gas-liquid separator, the gas filter and the unloading valve are connected through a gas guide pipe, the unloading valve is connected with the gas inlet end of the main machine, and a gas taking opening in the upper end of the gas-liquid separator is connected with an unloading shutdown emptying channel. The tail end of the unloading shutdown emptying channel is divided into an unloading pressure maintaining adjusting loop and a main machine unloading air supplementing loop, the unloading pressure maintaining adjusting loop is connected with an air guide pipe, the main machine unloading air supplementing loop is connected with a main machine, an air inlet pipe of the air filter is provided with a pressure adjusting valve and an electric valve, the electric valve is located at the rear end of the pressure adjusting valve, and the electric valve is controlled through an electric signal. The unloading valve is a pneumatic valve, a cooling liquid outlet of the gas-liquid separator is connected with the main machine through a liquid loop, and a liquid cooler, a liquid filter and a water cut-off electromagnetic valve are arranged on the liquid loop. The method has the advantages that the supercharger is energy-saving, frequent shutdown is avoided, and the system reliability is improved.

The invention provides an H-bridge topological structure, a main branch full-control valve, a controllable converter and a control method, and the H-bridge topological structure comprises an H-bridge branch, an energy consumption branch and a bypass branch. The H-bridge branch comprises a first full-control device, a second full-control device, a first one-way conduction element, a second one-way conduction element and a capacitor. The main branch full-control valve comprises a plurality of H-bridge topological structures, three structural forms of the main branch full-control valve and the controllable current converter are formed on the basis of the H-bridge topological structures, the main branch full-control valve and the controllable current converter comprise bridge arms connected in three-phase power in parallel, and each phase of bridge arm comprises a plurality of valves connected in series; the valve comprises a main branch, a main lightning arrester and an auxiliary branch. The main branch, the main lightning arrester and the auxiliary branch are connected in parallel; the main branch comprises a main branch full-control valve; the auxiliary branch comprises a plurality of high-voltage full-control valves which are connected in series and form a controllable converter for forced commutation when an alternating-current fault occurs, and the controllable converter does not have the problems of overvoltage and commutation failure in an extra-high-voltage scene.

The invention discloses a fruit segmenting device, which relates to the technical field of fruit segmenting tools, and comprises a processing box and a conveying box, wherein a plurality of flexible soft seats are equidistantly installed on each conveying belt, and a supporting mechanism is installed above the flexible soft seats; a pressing assembly is provided at the lower part of a fixed shell; a wire cutting mechanism is installed on the inner end surface of a mounting plate; a flat-mouthed discharge port is provided at the lower part of the front end surface of the processing box, and a material guide frame plate is installed at the front end of the discharge port; the invention facilitates the purpose of batch automatic segmenting of citrus through the cooperation of the supporting mechanism, the pressing mechanism and the wire cutting mechanism, effectively improves the work efficiency and processing effect of the segmenting operation of citrus, can achieve the purpose of rapid segmentation in the process of the citrus segmenting operation, and ensures that the citrus segments after segmentation will not soften and leak water due to squeezing, and can effectively avoid damage to the protective film of the citrus segments when segmenting the citrus.

The invention discloses a method for removing alkali liquor during shutdown of a direct coal liquefaction device. A system comprises a tank area alkali liquor tank, a coal liquefaction device alkali liquor buffer tank, a reaction heating furnace, a first reactor, a second reactor, a high-temperature and high-pressure separator, an alkali liquor discharge buffer tank, a foam cyclone separator and a defoamer. By adopting an innovative idea, the alkali liquor is discharged to the alkali liquor discharge buffer tank of the coal liquefaction device for buffering, degassing and defoaming, and then is pressurized and conveyed to the alkali liquor tank of the tank area for storage through the alkali liquor conveying pump of the coal liquefaction device, so that the aim of continuous shutdown and massive alkali liquor removal of the direct coal liquefaction device is fulfilled, the shutdown time is saved for enterprises, and the production efficiency is improved. And certain economic benefits are brought.

The utility model discloses a riveting press for a transmission shaft with a quick-change connector, and relates to the field of machining and assembling. Comprising a riveting press body, a riveting press working device, a riveting head, a sliding buckle, a limiting column and a pressure sensor. The riveting head is installed below the riveting press working device, the riveting press working device and the riveting head are connected through the sliding buckle, rapid disassembly and assembly of the riveting head are achieved, the limiting column is used for fixing the riveting head, riveting stability is ensured, manual installation errors are reduced, and replacement efficiency is improved. The pressure sensor is arranged below the riveting head, the pressure value in the riveting process can be monitored in real time, the pressure sensor is in linkage with the control box for feedback adjustment, it is ensured that the pressure of each riveting point is consistent, and the riveting quality and the product reliability are improved.

The invention discloses a motor iron core insulation paper flattening device and method, and relates to the technical field of mechatronics, the motor iron core insulation paper flattening device comprises a base, a conveying belt is arranged on the inner wall of the base, a first rotating roller and a second rotating roller are arranged on the inner wall of the conveying belt, and a pretreatment device is arranged on the front side of the conveying belt. The insulation paper is conveyed through the gap between the moving roller and the placing roller, the applied pressure can be adjusted according to the thickness change of the insulation paper by adjusting the distance between the moving roller and the insulation paper so as to prevent overpressure or underpressure, the proper pressure is beneficial to removing bubbles and wrinkles, meanwhile, damage to the insulation paper is avoided, and the production efficiency is improved. And a calibration rod is matched with a triangular block, a butt joint rod and a first spring, so that adjustment on the two sides is balanced, it can be ensured that the same position and pressure are kept when the moving roller moves up and down, and uniform flattening of the surface of the insulation paper can be achieved.

The invention provides a silage fermentation facility for a high-latitude alpine region and a use method thereof, fermentation equipment comprises a plurality of fermentation bins connected in series, a bearing table is arranged at one end of the fermentation equipment, and a sunken feeding bin is arranged at the other end of the fermentation equipment; a first portal frame and a second portal frame are arranged on the fermentation equipment, the first portal frame and the second portal frame are in sliding connection with the fermentation equipment, a liftable pressing plate is arranged on the second portal frame, the pressing plate is used for pressing silage, a material making bin is arranged on the first portal frame, a smashing device is arranged in the material making bin, and a discharging opening is formed in the lower portion of the material making bin. Through the automatic movement of the first portal frame and the second portal frame, the crushing and discharging functions of the material preparation bin and the compaction operation of the compaction plate, the whole process automation from raw material treatment to compaction fermentation is realized, the working efficiency is greatly improved, and the labor intensity of workers is reduced.

The invention relates to the technical field of voltage support in a power system, in particular to a voltage support SVG regulation and control method and system for a new energy weak transmission end, and the method comprises the steps: determining and optimizing key parameters of an SVG device through a multi-dimensional voltage support optimization algorithm, and meeting the voltage support requirements; through a dynamic working condition self-adaptive voltage regulation and control algorithm, a control strategy is optimized, and real-time output of the SVG is automatically adjusted; an intelligent SVG multi-criterion type selection algorithm is utilized to select equipment, and system integration and debugging are completed; an SVG device is continuously optimized through real-time data monitoring and a global feedback optimization algorithm, and real-time voltage support is achieved; according to the optimized SVG model selection and control strategy, the voltage supporting capacity of a new energy weak sending end system is improved, it is ensured that the voltage is kept stable under the large disturbance and complex working conditions, the equipment requirement and cost are reduced, the resource utilization efficiency is improved, the dynamic response speed is improved, and guarantee is provided for stable operation of the new energy system.

The package comprises a sterile bag (3) filled with liquid diluent, a bottle (9) fitted with a pierceable cap (26) for containing a medicinal or nutritional substance, and a tube (12) extending from the bag and terminating in a coupling and piercing device (16) for the bottle cap. The bag is housed in a sterile, flexible, airtight pouch (1), while the bottle and the coupling and piercing device are housed in a second sterile, flexible, airtight pouch (2).The tube (12) has a portion (13) between the first and second housings, containing a flow diverter (18) adjustable from a first position in which it prevents any communication between the bottle and the bag, to a second position in which it allows the bag to be connected to a leak-proof lateral opening (19) for a syringe (22), or to a third position in which it allows the bottle to be connected to said lateral opening. A flexible tube (42) with a hydrophobic filter (43) is attached to another lateral opening (41) of the flow diverter, terminating in one or both of said sealed sterile pouches and serving as a pressure compensator.

The disclosure provides a low dropout linear regulator circuit and a memory, the circuit comprising: a first transistor, a second transistor and a feedback control circuit; the gate dielectric layer thickness of the first transistor is less than a preset threshold; the first end of the first transistor and the second end of the second transistor are connected to receive a power supply voltage; the second end of the first transistor and the first end of the second transistor are connected to output a target voltage; the control end of the second transistor receives a power-on control signal, and the second transistor is used to output the target voltage during the power-on process; the feedback control circuit is connected with the control end of the first transistor, the feedback control circuit is used to receive the power-on control signal, control the first transistor to be disconnected during the power-on process, and control the first transistor to output the target voltage after the power-on is completed; wherein the power-on control signal is in an enabled state during the power-on process, and is in a disabled state during the remaining period. The disclosure can reduce the circuit area, avoid overvoltage and simplify the timing.

A three-way valve body with an emergency sealing structure belongs to the technical field of three-way valve bodies and comprises a valve body, a sealing partition plate A and two sealing partition plates B are fixedly mounted in the valve body and divide an inner cavity of the valve body into an air inlet cavity and a mixing cavity, two through holes are formed in the upper surface of the sealing partition plate A in a penetrating mode, and the two through holes are communicated with the air inlet cavity and the mixing cavity. The two ports are used for communicating with the corresponding air inlet cavities correspondingly, electric execution power sources are installed in the air inlet cavities in a penetrating mode correspondingly, pressing plates are fixedly installed on the lower surfaces of the electric execution units correspondingly, sealing rings are fixedly installed on the lower surfaces of the pressing plates, and sealing bases are fixedly installed at the ports in the upper surface of the sealing partition plate A; a plurality of contact rings are integrally formed on the upper surface of the sealing base, a plurality of adaptive grooves are formed in the lower surface of the sealing ring, the conical contact rings and the adaptive grooves can be utilized to form multi-stage sealing of multiple contact surfaces, and compared with a traditional single sealing ring, the pressure resistance and the sealing performance of the sealing structure are greatly improved.

This utility model discloses a vacuum nozzle device with pressure detection, including a vacuum nozzle, a push rod, an elastic element, a pressure sensor, a mounting base, and a drive mechanism. The output end of the drive mechanism is connected to the mounting base. The pressure sensor and the elastic element are disposed on the mounting base. Both ends of the elastic element elastically abut against the pressure sensor and one end of the push rod, respectively. The other end of the push rod is connected to the vacuum nozzle. This utility model's vacuum nozzle device with pressure detection can monitor pressure values ​​accurately and instantly, automatically adjust the pressure, effectively extend service life, reduce setup time, and improve production efficiency.

The present application discloses a PFC busbar voltage balancing control method and device, which relates to the field of new energy vehicle technology. Applied to a PFC busbar voltage balancing circuit, the circuit includes a first capacitor and a second capacitor connected in series, and the first capacitor and the second capacitor are respectively connected in parallel with a discharge circuit, and the method includes: when it is determined that the voltages of the first capacitor and the second capacitor are unbalanced, controlling the discharge circuit connected in parallel with the first target capacitor to be connected, and controlling the discharge circuit connected in parallel with the second target capacitor to be disconnected; wherein the first target capacitor is a capacitor corresponding to the larger voltage of the voltage of the first capacitor and the voltage of the second capacitor, and the second target capacitor is a capacitor corresponding to the smaller voltage of the voltage of the first capacitor and the voltage of the second capacitor. By controlling the connection and disconnection of the discharge circuit, the present application can timely balance the voltage of the first capacitor and the second capacitor, so that the voltages of the first capacitor and the second capacitor are consistent, and avoid capacitor overvoltage.

The invention relates to a pressing device for wafer adsorption. The pressing device comprises side protection plates distributed in the left-right direction, a rear side fixing plate installed on the side protection plates and distributed in the vertical direction, and a wafer pressing execution mechanism. The wafer pressing execution mechanism sequentially comprises an upper connecting plate, a middle connecting plate, a lower connecting plate and a pressing disc from top to bottom, the driving end of the lead screw motor is connected with the middle of the upper connecting plate below, and the lower connecting plate is connected with the pressing disc below. According to the invention, the wafer can be compressed when the wafer carrying table adsorbs the wafer, so that the wafer is tightly attached to the processing carrying table, and the wafer is ensured to be flat as much as possible.

The present invention provides a graphite sheet card point automatic press-fitting device, including a workbench, a frame, a press-fitting platform, a mobile module, a suction cup assembly, a press-fitting assembly, a vibration plate feeding system and a control unit, wherein a frame fixing cover is arranged on the workbench; and a press-fitting platform is arranged on the workbench for placing graphite sheets. The present invention uses a control unit for electrical control, uses a vibration plate feeding system to supply card points, uses a mobile module to realize the front-back, left-right, and up-and-down movements of the suction cup assembly and the press-fitting assembly, uses a suction cup assembly for loading and unloading operations, and uses a press-fitting assembly to accurately press-fit the card points into the card holes on the graphite sheet. The camera in the press-fitting assembly can improve the press-fitting positioning accuracy and avoid mis-pressing. The pressure sensor can detect the pressure during press-fitting to avoid over-pressing, thereby improving the press-fitting qualified rate and the press-fitting efficiency.

The invention discloses a standby power supply management system for a cable take-up and pay-off device of a mooring unmanned aerial vehicle, relates to the technical field of mooring unmanned aerial vehicles, has an active capacitor voltage balancing function, and solves the problem of unstable output voltage caused by voltage increase of a series super capacitor in an energy transfer mode. And meanwhile, protection and monitoring functions including short circuit, overheating and the like are integrated, so that the loss of electrical equipment is effectively reduced, the utilization efficiency of electric energy is improved, and the cost is reduced and the efficiency is improved. Meanwhile, a power resistor R66 is additionally arranged at the output end of the super capacitor management circuit to limit charging current, an anti-backflow diode D3 is additionally arranged to prevent terminal voltage of the super capacitor from flowing back to the input end of a charging chip, a capacitor C73 / C74 / C75 / C76 is additionally arranged to provide an electromagnetic compatibility protection function, and reliability and stability of the circuit are guaranteed.

The utility model belongs to the technical field of building construction, and discloses a concrete fixing frame for building construction, which comprises a base, a bottom plate arranged above the base, a support frame rotationally connected to the upper side of the bottom plate, a first side plate and a second side plate rotationally connected to the outer side of the support frame, and an auxiliary slicking mechanism for slicking concrete, the auxiliary slicking mechanism comprises L-shaped fixing blocks arranged at the corners of the supporting frame, vertically-upward fixing stand columns are arranged at the corners of the top ends of the fixing blocks, guide sliding rods are arranged between the two fixing stand columns on the same side, and the number of the guide sliding rods is two. The auxiliary slicking mechanism is arranged at the top of the supporting frame, the push-pull handle is manually pushed and pulled, the push-pull handle drives the movable connecting plate to move along the guide sliding rod through the rotating shaft, the movable connecting plate drives the slicking plate to move, poured concrete can be primarily slicked, the workload of follow-up manual leveling is reduced, and the working efficiency is improved. And the quality of the concrete surface is improved.

An oxygen-enriched gas system, comprising a low-pressure oxygen inlet manifold, the low-pressure oxygen inlet manifold being connected with a plurality of single-system inlet pipes, the single-system inlet pipes being connected with a mixer, the mixer being further connected with a single-system fan; a total cut-off valve, a total pipe pressure gauge and a total pipe temperature gauge are arranged on the low-pressure oxygen inlet manifold; a single-system cut-off valve, a Venturi flowmeter and a single-system regulating valve are arranged on the single-system inlet pipe. The oxygen-enriched gas system is provided, the total cut-off valve, the total pipe pressure gauge and the total pipe temperature gauge are arranged on the low-pressure oxygen inlet manifold, the single-system cut-off valve, the Venturi flowmeter and the single-system regulating valve and other components are arranged on the single-system inlet pipe, and the intelligent linkage is realized by cooperating with a main controller, the flow and the pressure can be accurately regulated and controlled, the oxygen temperature and the oxygen concentration are monitored in real time, and the interlocking protection is realized when the abnormality occurs.

The invention relates to an electronic circuit technology, and discloses a power-off time-delay circuit and a power-off time-delay method of a fan control system, when a power supply module supplies power normally, a key device is supplied with power through a first switching power supply, a charging and discharging unit is charged at the same time, and the power supply starting response time of the key device in a power utilization module is not influenced; when the power supply module supplies power abnormally, the charging and discharging unit discharges the second switching power supply, so that the second switching power supply converts and outputs a proper second voltage to supply power to the key device, thereby realizing a power-off delay function and ensuring that the key device works normally within a certain time. According to the invention, enough delay time can be provided for the system to maintain communication among the control modules, the problem of overvoltage possibly caused by direct use of capacitor discharge is also avoided, and key devices are protected. The invention aims to solve the problem of communication interruption of the fan control system caused by the jitter of the power supply, meet the power-off delay demand of the system, and avoid the influence on the starting response of the system.

The invention belongs to the technical field of capacitors, and provides a segmented capacitor device and a control method thereof, and the segmented capacitor device comprises a capacitor segment, a control segment, and a butt joint segment. And the capacitor section, the control section and the butt joint section are respectively connected end to end. According to the invention, the capacitor device is divided into the capacitance section, the control section and the butt joint section, so that the modular design is realized. According to the design, each part can be independently maintained, replaced or upgraded, and the whole device does not need to be disassembled, so that the maintenance cost is greatly reduced, and the maintenance time is greatly shortened.

The invention provides an isolation method for a condensate pump, which relates to the technical field of condensate water of thermal power generating units and comprises the following steps: step 1, stopping the condensate pump connected with a condenser, step 2, closing an outlet door, and step 3, closing an inlet door. And 4, the sealing water manual door is turned down (the sealing water pressure gauge is monitored to be not more than 0.6 MPa, and if the pressure rises, the sealing water manual door is turned down continuously). The problems that a thermal power plant condensation water system breaks down frequently, particularly, a condensation water pump inlet filter screen is blocked frequently and needs to be overhauled frequently, pressure relief water drainage and isolation overhauling are needed in the case of faults, but condensation water pump isolation has great safety risks such as condenser vacuum reduction and condensation water pump inlet pipeline overpressure damage occur are solved.

The invention discloses a biochemical tower equipped with a high-efficiency cyclone aerator and a sedimentation tank, comprising an outer cylinder of the biochemical tower, wherein an arched cover plate is arranged on the top of the outer cylinder of the biochemical tower, and an observation hole, a breathing valve and an exhaust gas outlet are arranged on the arched cover plate; a sewage inlet, an air inlet, a sludge outlet, a water outlet and a manhole are respectively arranged on the side walls of the outer cylinder of the biochemical tower; an inner cylinder is arranged in the outer cylinder of the biochemical tower, and the inner cylinder is arranged on the central axis of the outer cylinder of the biochemical tower, and the inner cylinder comprises a cylinder and a cone bucket, the cylinder is connected to a cone, the cone is arranged in the lower section of the outer cylinder of the biochemical tower, and the cone is arranged in the bottom of the outer cylinder of the biochemical tower through a support; the bottom of the cone is connected to the sludge outlet through a sludge discharge pipe; a guide pipe is arranged in the inner cylinder, a guide channel is arranged on the top of the guide pipe, a water distributor is arranged on the bottom of the guide pipe, a water outlet weir is arranged on the inner cylinder, and the water outlet weir is connected to the water outlet through a pipeline.