33results about How to "Reduce purchasing costs" patented technology

The invention relates to the technical field of electric power system market coupling, and discloses a flexible climbing and spinning standby market coupling system, which comprises a data acquisition module used for acquiring market clearing data of P units in T time periods before and within the day; the market clearing data comprises day-ahead market clearing data and intra-day market clearing data; the demand establishment module is used for determining spinning reserve and flexible climbing demands according to the preprocessed market clearing data; the coupled market clearing model construction module is used for constructing a coupled market clearing model according to the requirements of spinning reserve and flexible climbing and the preprocessed market clearing data in combination with a particle swarm algorithm; and the market coupling scheme generation module is used for generating a market coupling scheme by using the coupling market clearing model.

The invention discloses an automatic control system for a railway curved line wheel-rail lubrication device, which relates to the technical field of railway maintenance, and includes an oil pump assembly, a driving mechanism, a sensing piece, an extension limit switch, a retraction limit switch, a PLC, and a photoelectric sensing switch; the oil pump assembly includes an oil storage tank and a piston rod; an oil storage cavity is provided inside the oil storage tank; the driving mechanism can drive the piston rod to reciprocate, and squeeze the grease in the oil storage cavity out of the oil storage cavity; the sensing piece is fixedly connected to the driving mechanism or the piston rod, the extension limit switch corresponds to the extension limit position of the piston rod, and the retraction limit switch corresponds to the retraction limit position of the piston rod; the PLC can control the driving mechanism to rotate forward or reverse; the sensing piece is used to limit the moving position of the piston rod between the extension limit switch and the retraction limit switch; and the photoelectric sensing switch is used to detect that the locomotive vehicle passes through the detection area. The advantages of the invention are: it can realize intelligent automatic operation.

A centrifugal single-cylinder synthesis gas compressor device comprises a cylinder body, a rotor rotationally connected in the cylinder body, a multi-stage impeller arranged on the rotor in series, an inlet end cover arranged at the upper end of the cylinder body, a gas inlet arranged above the inlet end cover, an outlet end cover arranged at the lower end of the cylinder body, and a gas outlet arranged below the outlet end cover. Traditional high-pressure and low-pressure double cylinders are integrated into one single cylinder, the production cost of the compressor is reduced, the manufacturing period is shortened, when the single-cylinder compressor operates, the load of a steam turbine is light, the occupied area of a unit is small, and the purchasing cost is reduced for owners.

The invention relates to the technical field of cast-in-situ bored pile construction and monitoring, and provides an underwater cast-in-situ bored concrete pile concrete upper interface monitoring method and device.The method comprises the steps that after a guide pipe is tripped into a drilled hole or before concrete is poured, a detector is tripped into the designated position in the drilled hole and made to be in a suspended state; the detector comprises a signal acquisition unit; the volume-weight value of the detector is larger than the specific gravity value of slurry and cement mortar and smaller than or equal to the specific gravity value of concrete; in the concrete pouring process, the signal acquisition unit transmits the acquired inclination angle relative to the vertical direction of the detector to the signal processing unit through the signal transmission line; the signal processing unit compares the inclination angle with a preset inclination angle threshold value, and when the comparison result is that the inclination angle is larger than the preset inclination angle threshold value, an alarm is given to prompt to slow down or stop concrete pouring. The concrete upper interface position and the pile forming quality can be better controlled, materials are saved, material waste is reduced, construction benefits are improved, and waste emission is reduced.

The invention provides a hydraulic servo oil cylinder trunnion positioning and repairing method and a positioning device, which are used for carrying out in-situ welding and repairing on a fractured oil cylinder trunnion, and the method comprises the following control conditions: (1) heating an oil cylinder barrel before welding and carrying out heat preservation on the oil cylinder barrel after welding; (2) the tensile strength of the selected welding rod is higher than that of an oil cylinder barrel matrix; and (3) the welding rod is baked and heated before welding.

The utility model belongs to the technical field of keyboard space key assembling equipment, and particularly relates to a keyboard space key multi-LINK assembling machine which comprises a workbench, a rotating disc is arranged on the workbench, and a cavity used for containing a first annular LINK, a second annular LINK and a strip-shaped LINK is formed in the rotating disc. A first blanking mechanism, a second blanking mechanism and a mounting mechanism are arranged on the workbench by taking the turntable as the center, the first blanking mechanism is used for storing a first annular LINK and a strip-shaped LINK, the second blanking mechanism is used for storing a second annular LINK, and the mounting mechanism is used for pressing the first annular LINK, the second annular LINK and the strip-shaped LINK into a groove of a space key; a rotating motor is further arranged on the workbench, the rotating disc is installed on an output shaft of the rotating motor, and the rotating motor can drive the rotating disc to rotate so that the cavities can rotate to the first discharging mechanism, the second discharging mechanism and the installation mechanism. The problems that in the prior art, a space key with two annular LINKs cannot be assembled, and the equipment cost is high are solved.

The present invention relates to a method for blending light crude oil, comprising: (1) analyzing a mixed crude oil after electric desalting in a normal and low pressure device to obtain a density and a real boiling point distillation curve, and analyzing a distillate obtained by processing the mixed crude oil in a normal and low pressure device to obtain a density and an Engler distillation curve; (2) referring to a desired light crude oil, comparing the distillate curve with the real boiling point distillation curve of the mixed crude oil, selecting the distillate obtained by processing the mixed crude oil, using a process simulation software to establish an oil product mixture, and using a controller to set constraint conditions to obtain the proportion of each component of the blended crude oil. The method of the present invention can obtain a blended crude oil with properties similar to those of the desired light crude oil by mixing the mixed crude oil and its distillate being processed in a normal and low pressure device in a proportion, and the light crude oil can meet the processing requirements. The method of the present invention is simple and fast, and does not require the establishment of a complex model to obtain a blended crude oil with properties similar to those of the light crude oil, and can be used in the field of direct cracking of light crude oil.

The utility model relates to the technical field of nail making machines, and discloses a double-line high-speed nail making machine which comprises a lower supporting table, a nail making mechanism is fixedly arranged at the position, close to the rear side, of the upper end of the lower supporting table, and a feeding mechanism is fixedly arranged at the position, close to the front side, of the upper end of the lower supporting table. A side protection frame is fixedly arranged on the side, close to the feeding mechanism, of the lower supporting table, a heat dissipation window is arranged at an opening of the side, close to the feeding mechanism, of the side protection frame, a correction mechanism is fixedly arranged at the position, close to the feeding mechanism, of the outer portion of the side protection frame, and the nail making mechanism comprises a driving table. According to the automatic nail making machine, correction, feeding and nail making are integrated through layout optimization, the structure is compact, and operation is stable. A double-wire synchronous working mode is innovatively adopted, machining of two steel wires is completed at the same time, and the production efficiency is greatly improved. All the mechanisms are suitable for raw materials of various specifications, correction is accurate, the nail making quality is high, the production cost is effectively reduced, and the practicability and market competitiveness of equipment are improved.

The utility model relates to a waste steel treatment device, and belongs to the technical field of mechanical devices. According to the technical scheme, a smelting furnace (8) and a base (9) are fixedly connected into an integrated structure, and an anvil (2) is of an integrated structure composed of a pressing rod (21) and a pressing plate (22); a plurality of guiding stand columns (1) are arranged on a base (9), a fixed cross beam (3), a movable upper cross beam (4) and a movable lower cross beam (5) are arranged among the guiding stand columns (1), the movable upper cross beam (4) and the movable lower cross beam (5) are respectively connected to the guiding stand columns (1) in an up-down sliding mode, two clamping hydraulic cylinders (7) are arranged between the movable upper cross beam (4) and the movable lower cross beam (5), and a lifting hydraulic cylinder (16) is in driving connection with the movable lower cross beam (5). And a plurality of graphite electrodes (13) are fixed at the bottom of the smelting furnace (8) through ceramic bent plates (11). The utility model has the beneficial effects that a trepanning bar and scrap iron which are generated during cylinder body production can be smelted into a steel ingot which is used as a forging raw material.

According to the vertical electronic buoy with the multiple hook biting reminding functions, the buoy tail brightness of the electronic buoy can be automatically set according to the illumination condition of the fishing environment, and after the buoy tail brightness is set, the buoy tail brightness is basically not affected by voltage changes of a battery. The microprocessor in the electronic buoy monitors the working voltage value of the miniature battery all the time in the whole fishing process, the pulse width modulation (PWM) technology is adopted to drive the green light emitting diode used for displaying the buoy purpose to emit light, and the purpose of reducing the brightness of the green light emitting diode is achieved. Three different float tail brightness including high brightness, medium brightness and low brightness can be set to adapt to fishing environments under different illumination conditions, so that the optimal float observation effect is achieved, and the fishing comfort is improved. Three different light-emitting reminding modes of transient light emitting, continuous light emitting and continuous flickering are adopted for representing the change degree of the movement state of the buoy, a fisherman can conveniently judge the specific condition that a fish bites a hook, a corresponding rod lifting strategy is selected, the fishing pleasure is improved, and fool-type fishing is avoided.

The invention discloses a video stream cross-network forwarding method and system, and belongs to the field of multimedia communication. The method mainly comprises the following steps: acquiring a video stream link which can be directly played after authentication of remote external network equipment; the micro server processes the request of the external network equipment; the request of the extranet equipment is in authentication connection with the main server, and after the authentication is passed, the micro server receives video stream data of various protocols of the main server and converts the video stream data into an HTTP video stream link which can be directly played without re-authentication; the main server is connected with an intranet monitor, provides identity authentication and obtains video streams from an intranet device. Through the scheme, a third-party proxy server does not need to be deployed, virtual private network software does not need to be used for proxy, the video browsing step is simplified, and the hardware cost is reduced.

The utility model discloses an outer circle and end face fillet boring integrated cutter which comprises a cutter handle and an adjustable cutter holder connected to the cutter handle, a machining part is arranged on the adjustable cutter holder and comprises a first blade and a second blade which are arranged on the two sides of the adjustable cutter holder, and the machining part further comprises an adjusting groove formed in the adjustable cutter holder. A small tool apron is connected between the second blade and the adjusting groove, a height adjusting bolt is connected between the small tool apron and the adjusting groove, a diameter adjusting bolt is connected between the small tool apron and the second blade, and arc-shaped fillets are arranged at the four corners of the first blade. Compared with the prior art, the integrated cutter for boring the outer circle and the end face fillet has the advantages that the integrated cutter is convenient to operate and use, a cutter handle can be saved, the cutter does not need to be replaced, and two-step machining can be carried out at the same time.

This invention discloses a method for repairing the wear-resistant layer of a hollow shaft in a ball mill, comprising the following steps: pretreatment of the surface of the hollow shaft to be repaired by high-pressure water washing, graded grinding, and wiping with anhydrous ethanol; preparation of a wear-resistant coating slurry according to the mass ratio of epoxy resin:silicon carbide:curing agent of 1:(0.5-1.5):(0.01-0.1), and forming a uniform mixture by mechanical stirring; uniformly coating the slurry onto the surface of the hollow shaft, and increasing the density by rolling, patting, and layer-by-layer compaction, controlling the coating thickness within the range of 5-50 mm; adopting a stepped heating heat treatment process, first holding at 40-60℃ for 2-3 hours, then raising the temperature to 80-120℃ and holding for 1-2 hours, and finally naturally cooling to room temperature to form a wear-resistant protective layer. The wear-resistant layer prepared by this method has a dense structure and a Rockwell hardness of not less than HRC60, which can improve the service life of the hollow shaft, reduce equipment maintenance costs, reduce the consumption of grease in the lubrication system, and improve the operational stability and production efficiency of the equipment.

The invention belongs to the technical field of plant cultivation, and particularly relates to a Mongolian medicine plant Artemisia stelleriana cutting propagation method, which comprises the following steps: S1, disinfecting Artemisia stelleriana branches; s2, pruning the disinfected Artemisia stelleriana branches, and performing disinfection again to obtain Artemisia stelleriana cuttage segments; s3, treating the cutting sections of the Artemisia stelleriana by using a rooting agent, and cutting the cutting sections of the Artemisia stelleriana subjected to rooting treatment in a matrix for cutting propagation. The cutting propagation method of the Mongolian medicine plant Artemisia stelleriana shows remarkable beneficial effects in the aspects of ecological environment protection, propagation efficiency improvement, germplasm resource enrichment, stress resistance enhancement, economic benefit improvement and the like, and has important popularization and application values.

This invention belongs to the field of waste battery recycling, and specifically relates to a method for recycling and processing black powder from waste ternary lithium batteries. The method includes the following steps: S1 Primary acid washing: Mixing nickel- and cobalt-containing aluminum slag (aluminum slag 1) with sulfuric acid at an initial pH of 4-5; S2 Solid-liquid separation I: Separating the mixture obtained in S1 into a filtrate rich in nickel sulfate and cobalt sulfate, and aluminum slag 2; S3 Back-conditioning of filtrate 1; S4 Precipitation and recovery of aluminum slag 2. The technical solution of this invention achieves efficient recovery of valuable metals and deep purification of impurity metals, solving the technical bottleneck of traditional hydrometallurgical processes where these two aspects are difficult to balance. This invention elevates a traditional wastewater and waste residue treatment process into an advanced process system that achieves efficient resource conversion, internal recycling synergy, and a win-win situation for both economic and environmental benefits. It has significant application value in the field of non-ferrous metal resource recycling, especially in the field of lithium-ion battery recycling.

The application discloses a kind of hydrorefining catalyst activation methods of hydrocarbon oil.The method includes the process of reduction to hydrorefining catalyst of hydrocarbon oil, wherein, the hydrorefining catalyst includes alumina carrier, metal molybdenum, organic nickel and organic metal auxiliary agent, the metal auxiliary agent is at least one or several of zinc, copper, magnesium, gallium, with the weight of final hydrogenation catalyst as basis, the mass content of organic nickel is 0.1% to 4.0%, preferably 0.2% to 3.0%, further preferably 0.5% to 2.0%, with the metal auxiliary agent element as basis, the mass content of organic metal auxiliary agent is 0.05% to 2.5%, preferably 0.1% to 2.0%, further preferably 0.2% to 1.5%.The method has the advantages of time-saving and high efficiency, without adding sulfidation agent, and more simple and convenient to switch raw materials.

The utility model relates to a device for detecting sample defects of an X-ray fluorescence spectrophotometer, which comprises the X-ray fluorescence spectrophotometer, a belt conveying device, a sample machine, a removing mechanism, a visual identification system, a support, a photoelectric sensor, a waste sample groove and a data transmission control computer, and the belt conveying device is arranged between the sample machine and the X-ray fluorescence spectrophotometer. A visual identification system is arranged above the belt conveying device through a support, a photoelectric sensor and a removing mechanism are arranged on the belt conveying device, an opening is formed in the position, provided with the removing mechanism, of the belt conveying device, and the opening end is connected with a waste sample groove through a sliding groove. The data transmission control computer is electrically connected with the visual identification system, the belt conveying device, the motor and the photoelectric sensor respectively; the device is convenient to use, low in cost, convenient to maintain, low in failure rate, high in applicability and capable of effectively controlling defective samples not to enter the X-ray fluorescence spectrophotometer and guaranteeing the accuracy of data analysis of the spectrophotometer and smooth operation of the equipment.

This invention relates to the field of information display technology, and discloses a conference screen sharing method and related equipment based on frame buffering and incremental updates. The method includes managing and processing the frame buffer resources of a remote host and a local host; using incremental update technology, the remote host and local host identify the changed parts of the screen content after frame buffer resource management and processing, and generate image difference information; and transmitting the image difference information between the remote host and the local host to complete the conference screen sharing based on frame buffering and incremental updates. This invention, by managing and processing the frame buffer resources of the remote host and local host, can effectively integrate and optimize the utilization of screen resources; the use of incremental update technology allows the system to identify and transmit only the changed parts of the screen content, rather than the entire screen image. During the conference screen sharing process, only the changed image areas are captured and transmitted, thereby significantly reducing the amount of data that needs to be transmitted.

The invention relates to the technical field of safety warning signboard management, in particular to a signboard management device with a real-time digital display function, which comprises a signboard placement seat, a signboard placement clamping groove piece, a signboard placement clamping groove detection piece and a signboard display piece, the signboard placing seat is a rectangular cavity with the top and the side portions open, the inner side wall of the signboard placing seat is provided with a signboard placing clamping groove piece and a signboard placing clamping groove detection piece, and a clamping groove in the signboard placing clamping groove piece corresponds to a detection clamping groove, with an optical coupling sensor, in the signboard placing clamping groove detection piece. The optocoupler sensor is electrically connected with a signboard display part on the outer side wall of the signboard placing seat through a controller; in the management process of taking and returning the safety warning sign, the taking and returning states of the safety warning sign can be automatically detected and recorded, the situation that traditional manual checking consumes time and is prone to making mistakes is avoided, and the problems that the safety warning sign is lost, checking consumes time and is prone to making mistakes, and the statistical situation of the safety warning sign is large in error are solved.

The invention discloses a packaging adjusting method for cigarette cartons with or without carton trademark paper, the sizes of four cigarette carton forming channels in the length direction, the width direction and the height direction are correspondingly adjusted to meet the corresponding cigarette carton sizes, through the application of the method, when cigarette cartons with cartons or cigarette cartons without cartons are produced, the cigarette cartons with cartons or cigarette cartons without cartons are produced, in the equipment adjusting process, the cigarette cartons with cartons or cigarette cartons without cartons are not produced, the cigarette cartons with cartons or cigarette cartons without cartons are not produced. The stability of product quality is guaranteed, the efficiency of equipment number changing and transformation is greatly improved, the purchase cost of accessories is reduced, the adjustment steps are properly reduced, and smooth completion of annual production tasks of factories is powerfully guaranteed.

An integrated charging device for an electric vehicle, including a high-power charging adapter, a charging gun head, a control box and a power supplying plug. The high-power charging adapter, the control box and the charging gun head are detachably and electrically connected in sequence to form a wall-mounted charging pile. The charging gun head, the control box and the power supplying plug are detachably and electrically connected in sequence to form a charging gun of mode 2. The present disclosure integrates the wall-mounted charging pile and the charging gun of mode 2, so that users can assemble the components of the charging device as required to obtain the wall-mounted charging pile or the charging gun of mode 2, thereby realizing free switching under different use conditions, which facilitates the use and saves the purchase cost.

The invention discloses a method for estimating the oxygen release amount of a ternary lithium ion battery positive electrode material. The method comprises the following steps: determining the molar mass according to the chemical formula of the ternary lithium ion battery positive electrode material; substituting into a theoretical capacity calculation formula to calculate the theoretical capacity of the ternary lithium ion battery positive electrode material; preparing a ternary lithium ion battery positive electrode material; assembling a positive electrode half battery of the ternary lithium ion battery positive electrode material to determine the actual capacity of the ternary lithium ion battery positive electrode material; determining the proportion of residual lithium ions in the material according to the ratio of the actual capacity to the theoretical capacity; and substituting the proportion of the remaining lithium ions into the two phase transformation chemical equations, and calculating to obtain the oxygen release amount. According to the method, the oxygen release amount in the phase change process of the material is calculated according to the residual lithium content in the ternary lithium ion battery positive electrode material by means of combining experimental test and theoretical analysis, and the method has the characteristics of accurate test and low test cost.

The utility model relates to the technical field of steel slag processing equipment grinding roller tooth sleeves, in particular to a steel slag grinding roller split tooth sleeve which is divided into grinding roller upper teeth and grinding roller lower teeth, a dovetail is arranged below the grinding roller upper teeth, a dovetail groove is formed in the top of the grinding roller lower teeth, and the dovetail and the dovetail groove are attached to each other. Pin holes are symmetrically formed in the two sides of the upper grinding roller teeth and the two sides of the lower grinding roller teeth and located through taper pins. The gear sleeve has the advantages that the purpose of split replacement can be achieved according to the abrasion condition, the dovetail groove matching structure is simple, all the gear sleeves can be exchanged, and the purchase cost of spare parts is saved; secondly, a conical positioning pin with a step is adopted for locking, so that the split gear sleeve is integrally safe and firm in use; and thirdly, through the use of the split gear sleeve, the gear sleeve does not need to be integrally replaced when being abraded and replaced, only one third of the abraded part is replaced, and the cost of spare parts is reduced by more than 55%.

A kind of ship is spilled by drain pipe splash-proof cover plate, it belongs to the technical field of ship engineering.The cover plate includes first cover plate structure, second cover plate structure, bolt structure, backing plate structure and clamping piece structure, bolt structure and backing plate structure are set on first cover plate structure, clamping piece structure is set on second cover plate structure;Bolt structure and clamping piece structure cooperate to connect first cover plate structure and second cover plate structure.When installing, the backing plate structure of first cover plate structure is inserted into the cavity of second cover plate structure, stud is inserted into open long slot and locked nut, and the different cooperation of stud and open long slot can adjust the diameter of reserved hole.The device not only can be adapted to different diameter drain pipe through split plug-in and bolt locking design, reduce spare parts cost and facilitate installation and removal in narrow space of ship, but also can realize splash-proof protection by means of double-adhered sealing structure and air-permeable semicircular hole, avoid liquid splashing to cause safety hazard and structural damage.

A kind of based on blank's aero-engine intermediate casing radial reference positioning method, based on blank feature, by mathematical modeling, the actual coordinates of two reference holes are taken as known quantity, the actual coordinate value of radial reference is obtained;When part alignment, let part one pin hole be in X axis positive direction, according to part structure, then another pin hole must be in second quadrant, then the actual coordinates of two pin holes can be automatically measured by machine tool online measurement function, the actual coordinate value of radial reference is obtained by using global variable function to call two reference hole coordinates, and finally the automatic positioning of radial reference is completed;In processing, the radial reference of part is determined by aligning the rotary circle.The advantages of the present application are: the problem of unable to process due to special part structure is solved.It can be applied to all parts processing with one-face-two-pin method to determine reference, instead of traditional mechanical alignment method, so that the reference positioning and processing of this type of blank are no longer limited by special fixtures.

The application relates to the technical field of candesartan intermediate synthesis, in particular to a device for synthesizing candesartan intermediate; the device comprises a micro-channel reactor, a tubular reactor and a continuous separator; the tubular reactor further comprises an outer tube and a mixer installed in the inner part of the outer tube; the mixer comprises a tube body and an SK core; the SK core is composed of a plurality of left and right twisted 180-degree spiral pieces; liquid inlets and liquid outlets are arranged on the surface of the outer tube; the SK core can be detachably connected, so that the user can separately detach the blocked SK core, clean or replace the blocked SK core, the expensive SK type static mixer does not need to be replaced as a whole, the equipment procurement cost is greatly reduced, the tubular reactor as a whole does not need to be complicatedly detached and reassembled, the downtime is obviously reduced, and the overall production efficiency of the synthesized candesartan intermediate is improved.

The present application relates to a kind of methods for improving the surface quality of hot rolling vertical roll, including the steps S1, the vertical roll is carried out after being scrapped and the surfacing of roll surface working layer;Step S2, the lower edge of vertical roll is extended 25~35mm;Step S3, the surface roughness of vertical roll lower bearing seat platform and the size tolerance of platform and roll lower shoulder surface cooperation are optimized.The present application can realize the working layer surfacing of scrapped roll reuse, and the cost reduction reaches more than 50%, while, the problem of serious granular defect of ordinary material vertical roll lower machine is solved, and the roll surface quality is significantly improved, so as to extend its in-machine service life, and improve the in-machine life of roll.

The invention relates to the technical field of oil and gas production, in particular to an oil field internet of things multifunctional intelligent operation and maintenance terminal device, which comprises a battery power supply management module, a power supply management module and a power supply management module, the conversion control module is used for carrying out signal conversion and control, carrying out data analysis, packaging and repackaging on an input signal, and converting the input signal into an output signal; the input module is used for inputting signals; in the input module, an interface for inputting a signal comprises at least one of an RJ45 interface, an RS232 interface, an RS485 interface, a UART (Universal Asynchronous Receiver / Transmitter) interface and a Zigbee-PRO interface; the output module is used for outputting signals; in the output module, an interface for outputting signals comprises at least one of WIFI and Bluetooth. According to the invention, the purchase cost of operation and maintenance equipment can be reduced, the complexity of operation and maintenance is reduced, the fault processing cost is reduced, and the maintenance capability and working efficiency of employees are improved.

The utility model relates to the technical field of bar rolling production, in particular to a forward spraying guide pipe at an inlet of a large bar line cooler, and aims to solve the problem that the head of a bar is easy to collide with the forward spraying guide pipe due to the structural design defect of the forward spraying guide pipe of the cooler in the bar rolling and cooling process at present. And the cooler is finally damaged and scrapped, so that the purchase cost of spare parts of the large rod wire is greatly increased. The nozzle extends and lengthens the inlet conduit of the cooler, so that the impact force of the head of a bar is effectively and completely released to the horn mouth of the conduit, and the service life of the cooler can be effectively prolonged only by regularly replacing spare parts of the inlet conduit; the inlet assembly of the cooler is designed in a split mode, spare parts of the inlet guide pipe, the forward spraying guide pipe and the cooling guide pipe can be rapidly and conveniently replaced in a pipe cavity through bolts, the frequency that the head of a bar collides with the forward spraying guide pipe is effectively reduced, and production accidents caused by fragmentation of the forward spraying guide pipe and the phenomenon that the whole cooler is scrapped and damaged are completely eradicated.

The invention discloses a passive charging method, device and equipment for a nuclear power unit and a medium. The method comprises the following steps: determining a burn-up depth requirement of the replacement loading; an irradiated fuel assembly used for replacing a secondary neutron source assembly is screened out according to the burn-up depth requirement; and loading the irradiated fuel assembly to a target position in a passive reactor core as a replacement of the secondary neutron source assembly. According to the embodiment of the invention, the discharge pressure of liquid tritium can be relieved.