27results about How to "Realize online maintenance" patented technology

The utility model discloses an automatic throttling monitoring manifold for large-drift-diameter well drilling, which comprises an inlet four-way joint, a first pressure control throttling pipeline, a second pressure control throttling pipeline, a third blowout pipeline and a fourth monitoring pipeline, and one interface of the inlet four-way joint is connected with wellhead equipment; the other three interfaces are respectively connected with a first pressure control throttling pipeline, a second pressure control throttling pipeline and a third blowout pipeline; the first pressure control throttling pipeline and the second pressure control throttling pipeline have the same structural composition and are standby for each other; the third blowout pipeline is provided with a special-shaped five-way connector, and the other three connectors of the special-shaped five-way connector are connected with the tail end of the first pressure control throttling pipeline, the tail end of the second pressure control throttling pipeline and the initial end of the fourth monitoring pipeline correspondingly. According to the 5 ''* 35MPa large-drift-diameter automatic throttling monitoring manifold suitable for large-displacement operation of the ultra-deep well, fluid with larger displacement can pass through, circulating friction resistance is reduced, and wellhead pressure is reduced, so that the service life is prolonged, and potential safety hazards are reduced.

The utility model discloses a gravity lifting falling rod rapping device which comprises a driving mechanism, a gravity rod, an insulation shaft and a cathode frame connecting rod, the cathode frame connecting rod is arranged at the lower end of the insulation shaft, the driving mechanism drives the gravity rod to ascend, the gravity rod descends through the self weight to impact the upper end of the insulation shaft, and the cathode frame connecting rod is arranged at the lower end of the insulation shaft. Compared with the prior art, the vibrating device has the advantages that the vibrating force can be changed, and the requirement of the vibrating force can be met.

The invention belongs to the technical field of direct-current power supply system management, and provides an independent management method for a split type parallel direct-current power supply lithium battery of bidirectional DC / DC conversion, a direct-current power supply is of a movable structure, and the system architecture of the direct-current power supply comprises a central controller and a plurality of parallel power sub-modules, the method specifically comprises the following steps: a central controller identifies a newly added power sub-module and completes system architecture configuration based on acquired state parameters of existing power sub-modules and main bus operation state data; the central controller dynamically selects a control mode and generates an execution instruction of charging and discharging power based on the number and state parameters of the power sub-modules, and controls the charging and discharging of each power sub-module; on the premise of ensuring uninterrupted power supply of the direct-current power supply, the central controller controls the lithium battery pack in the power sub-module to perform online capacity checking or activation operation. According to the invention, plug-and-play and independent control of the power sub-modules are realized through modular design.

The present invention discloses a plate-mounted proportional directional valve, comprising a valve body, a locking disk, a hook and a fixing pin; the hook is provided on one connecting surface of the valve body, and the fixing pin is provided on the other opposite connecting surface; the hook is rotatably connected to the valve body, the locking disk is rotatably arranged on the valve body, and an opening is provided on the locking disk; the locking disk can be rotated relative to the valve body until the opening is aligned with the hook and the fixing pin, so that the hook on the valve body can be rotated to form a connection or disconnection with the fixing pin on the adjacent valve body; the locking disk can be rotated until the opening is misaligned with the hook and the fixing pin to limit the rotation of the hook relative to the valve body. The plate-mounted proportional directional valve can realize convenient and quick assembly and disassembly operations.

This utility model relates to the field of power electronics technology, specifically to a DC common bus current limiting and blocking device. It includes an energy storage converter and a DC bus terminal, with a blocking module disposed between the energy storage converter and the DC bus terminal. The blocking module includes multiple blocking units, and the energy storage converter is connected to the blocking units. The blocking units are connected in parallel to each other and connected to the DC bus terminal. This DC common bus current limiting and blocking device can achieve rapid current limiting and isolation when multiple energy storage converters are connected in parallel to the DC bus. It has high response speed and dynamic detection capability, and can effectively avoid the adverse effects of abnormal current caused by faulty equipment on other equipment.

The utility model provides an online maintenance circuit of a voltage stabilizer and the voltage stabilizer. The circuit comprises a first switch, a switch control sub-circuit and second switches in one-to-one correspondence with compensation transformers. The first input end of the switch control sub-circuit is used for inputting an online maintenance control signal, the second input end of the switch control sub-circuit is used for inputting an auxiliary power supply power failure detection signal, and the output end of the switch control sub-circuit is connected with the control end of the first switch; wherein when the online maintenance control signal or the auxiliary power supply power failure detection signal is valid, the first switch is kept in a closed state; the first end of the first switch is connected with the output live wire end of the voltage stabilizer, and the second end of the first switch is connected with the control end of the second switch; the second switch is connected between any two wiring terminals of the primary winding of the corresponding compensation transformer; according to the utility model, on-line maintenance of the voltage stabilizer can be realized, and the situation that the uninterruptible power supply cannot supply power normally due to power failure of the voltage stabilizer is avoided.

The invention discloses an intelligent operation and maintenance method and device for a water quality monitoring system. The method comprises the following steps: obtaining a target image from a monitoring video; extracting an image block corresponding to the detection target from the target image; for a detection target of which the type is a container, identifying a pixel coordinate of an edge identifier of the container and a pixel coordinate of a liquid level of a water sample carried by the container from the image block; determining the liquid level of the container based on the pixel coordinates of the edge identifier and the pixel coordinates of the liquid level; for the detection target of which the type is the machine part, determining the operation state of the machine part based on the similarity between the image block and the sample image; and generating an operation and maintenance log of the water quality monitoring system based on the liquid level of the container and the operation state of the machine part. According to the method, an image block corresponding to a detection target is determined from a target image provided by a monitoring video, and the operation state of a component related to water sample detection in the water quality detection system is identified, so that online maintenance of the water quality detection system is realized.

The invention discloses a large-diameter top-mounted ball valve and an assembling method, a maintaining method and a repairing method thereof.According to the large-diameter top-mounted ball valve, the structure of a valve seat assembly in the large-diameter top-mounted ball valve is improved, and a valve seat, a valve seat supporting ring and a spring seat are matched with a valve body to form three independent pressure cavities; high-pressure media can be selectively input into the different pressure cavities through communication of the injection holes and an external pressure source so as to increase the pressure in the corresponding pressure cavities, and driving of different components in the valve seat assembly is achieved so that the components can axially translate. When the large-diameter top-mounted ball valve is assembled, maintained and repaired, different pressure cavities can be pressurized according to requirements so that different parts in the valve seat assembly can move in different modes, corresponding treatment modes are selected according to requirements, and the assembling, maintaining and repairing difficulty of the large-diameter top-mounted ball valve can be effectively reduced; and meanwhile, on-line maintenance and repair of the valve are achieved, and meanwhile the sealing performance of the valve cannot be affected.

The invention provides a direct-hanging energy storage low-voltage maintenance system and method, and relates to the technical field of power electronic application, and the system comprises a plurality of high-voltage direct-hanging energy storage power modules, a high-voltage direct-hanging energy storage converter control system, a multiplexer switch, and a low-voltage AC maintenance single-phase power supply. The high-voltage direct-hanging energy storage converter control system is used for detecting the SOC of all batteries and controlling each high-voltage direct-hanging energy storage power module; wherein the high-voltage direct-hanging energy storage converter control system is configured to perform maintenance judgment on the SOC of each battery, compare the SOC of each battery with a preset health SOC threshold value, select a battery to be maintained according to a judgment result, and execute a maintenance program on the battery to be maintained; the maintenance program comprises the steps of pre-charging the to-be-maintained module and charging the to-be-maintained battery until the SOC of the to-be-maintained battery meets the requirement. Under the condition that normal operation of the system is not affected, the battery needing to be maintained is processed in a targeted mode, and therefore the performance of the whole energy storage system is improved, and the service life of the whole energy storage system is prolonged.

This invention discloses a thermal energy storage system for pumping large-flow-rate high-temperature molten salt, relating to the fields of solar thermal power generation, nuclear power, and thermal power energy storage. It includes a main molten salt storage tank, a stabilizing tank, a horizontal storage tank, a main circulating molten salt pump, and a salt-reducing temperature-regulating pump. The main molten salt storage tank is connected to the stabilizing tank via multiple pipelines. The outlet of the stabilizing tank is directly connected to the suction inlet of the main circulating molten salt pump via a pipeline equipped with an isolation valve and an air cooler, stabilizing the pump suction flow and enabling large-flow-rate molten salt pumping. The arrangement of one or more pipelines between the main molten salt storage tank and the stabilizing tank reduces the height of unusable molten salt in the main molten salt storage tank, saving costs. An air cooler is installed after the stabilizing tank to ensure safe isolation during isolation valve maintenance. This invention addresses the need for pumping large-flow-rate high-temperature molten salt in solar thermal power plants or nuclear power plants of 350MW or above, while also adapting to the requirements of long-term, uninterrupted low-speed pump operation.

The invention discloses a fault diagnosis and active isolation technology applied to a PLC redundant power supply, and relates to the technical field of fault diagnose.The fault diagnosis and active isolation technology comprises a power supply connecting module, a power supply loop control module, a switch control module, a redundant power supply control module and a communication processing module. When one power supply fails, normal work of the system is not influenced, the maintenance flexibility of the PLC system is improved, online maintenance can be realized, the maintenance time and cost are reduced, the load is balanced, the use efficiency of the power supply can be optimized, and the service life of the power supply is prolonged.

This utility model discloses an eccentric hemispherical valve that can be maintained online. The valve body has an internal valve cavity with a maintenance port on its upper side. An inner chamber is located inside the maintenance port. The valve core includes a sealing disc and a main sealing ring mounted on the sealing disc. The valve seat includes a lower valve seat and an upper valve seat connected together. One end of the valve seat extends into the inner chamber and divides it into a first chamber and a second chamber, while the other end extends out of the inner chamber. One end of the piping assembly is connected to the valve cavity, and the other end is connected to the first and second chambers respectively. During online maintenance, the valve core rotates to the maintenance position at the maintenance port, and the valve seat moves downward, causing the lower valve seat to contact the sealing disc and form an isolation chamber. The main sealing ring is located within the isolation chamber. The main sealing ring can be maintained by opening the maintenance port. The valve has a simple structure, low cost, and is easy to maintain. Furthermore, the piping assembly does not require an external power source; instead, it cleverly utilizes the pressure of the medium within the pipeline to control the up-and-down movement of the valve seat.

A high-redundancy liquid-cooling cold plate system comprises a vapor chamber, cold plate sets, a gas pipeline, a double-acting valve, a gas return main collecting pipe, a condenser, a pump, a liquid pipeline, a liquid separation main collecting pipe and heat exchange fluid, and further comprises at least one cold plate set, and each cold plate set is composed of at least two cold plates which are independently arranged in a crossed mode. And online maintenance of the high-heat-flow computing power chip cold plate system can be realized. In combination with the requirements of operation safety and energy conservation of the computing power chip, the device is high in safety and has the advantages of being high in heat dissipation capacity, compact in structure, high in temperature control precision, high in applicability, wide in application range and the like.

The present invention provides an electroplating wastewater treatment station, which comprises: a precipitation assembly, which comprises a precipitation box, a main precipitation cavity and a liquid outlet cavity are arranged in the precipitation box, and an inclined filtration module is mounted in the liquid outlet cavity; the neutralizing assembly comprises a neutralizing box, a stirring part is mounted in the neutralizing box, and an opening and closing part is mounted at the bottom of one side of the neutralizing box; the filtering mechanism comprises a filtering box, a filtering cloth shaping assembly and a defoaming assembly; an extrusion plate is horizontally and slidably mounted in the filter box, a filter cavity is formed in the inner side of the extrusion plate, a driving part is connected to the outer side of the extrusion plate, and filter cloth arranged in a V shape is mounted in the filter cavity. Through partition design, integration of filtration, clarification and impurity sedimentation is achieved, the filter cloth is arranged in a V shape, an operation area for rapidly replacing the filter cloth is adopted, meanwhile, the filter cloth is backwashed through the filter cloth shaping assembly, fine impurities in filter cloth holes are removed, online maintenance of the filter cloth is achieved, and the filter cloth does not need to be dismounted after shutdown.

A multi-output power supply device that can serve as a backup for each other includes: a control panel; an external communicator for communication between the control panel and the outside world; at least two power modules, all with identical circuit structures; each power module is independently connected to the control panel; each power module is connected to a first load and a second load respectively via two independent internal output contactors, thereby supplying power to the first and second loads; the control panel collects the operating status of each power module, thereby controlling all power modules to switch to either a branch output mode or a current sharing output mode. By setting up multiple completely independent DC power modules and independently controlling each DC power module, executing logical judgments and controlling the on / off state of each DC power module, automatic power supply switching to different loads is achieved, ensuring continuous power supply to the loads for extended periods and effectively preventing power interruptions.

The application discloses a railway freight car damping system replacement set, and belongs to the technical field of railway freight car damping system maintenance equipment. The set is composed of a self-locking hydraulic pick, a supporting tool, a positioning pin, a wire tightener, a portable electric hydraulic pump, a lifting protection device and a pillow spring fork, and the components are detachably connected through the positioning pin and an oil pipe. The supporting tool is symmetrically designed and is provided with a protruding block, cooperates with the self-locking device of the self-locking hydraulic pick and the wire tightener, and can avoid pick collapse during the jacking process; the lifting protection device comprises a first lifting protection device and a second lifting protection device, and provides safety protection at the highest jacking position and the lowest falling position of the bolster end head, respectively. The set can simultaneously complete pillow spring replacement and side frame column wear plate replacement, and can be used for on-line maintenance without removing the car, solves the problems of single function, narrow adaptation range, low maintenance efficiency and great safety hidden danger of the existing equipment, and is suitable for various types of railway freight car bogies.

The utility model relates to the technical field of olefin separation equipment, in particular to a propylene compressor outlet condensation system which comprises condensers, a liquid discharge unit and a purging unit, an inlet valve is arranged at a condensation inlet of each condenser, and an outlet valve is arranged at a condensation outlet of each condenser. The liquid discharging unit comprises a liquid discharging pipeline, and each liquid inlet of the liquid discharging pipeline is communicated with a condensation outlet of the corresponding condenser and used for discharging liquid-phase propylene in the condensers. The purging unit comprises a gas supply pipeline and an emptying pipeline, and each gas outlet of the gas supply pipeline communicates with a condensation outlet of the corresponding condenser and is used for providing purging gas into the condensers; and each gas inlet of the emptying pipeline is communicated with a condensation inlet of the corresponding condenser and is used for exhausting the purging gas in the condenser. Each condenser can be cut out independently, a propylene compressor system does not need to be integrally replaced in the overhaul period, the replacement difficulty is lowered, propylene loss is reduced, and online overhaul of the condenser is achieved.

The present invention discloses a portable feedback type battery maintenance control system, including a charger, a battery pack, a system load, a battery inspection instrument, a portable feedback type device, a system monitor and a switch K1-K5; wherein the system load is connected to the DC bus through the switch K2; the input end of the charger is connected to the AC power grid, and the output end is connected to the DC bus through the switch K1; the input end of the battery pack is connected to the DC bus through the switch K3, and is electrically connected to the input end of the portable feedback type device through the switch K4; the output end of the battery pack is electrically connected to the input end of the battery inspection instrument; the output end of the portable feedback type device is connected to the AC power grid through the switch K5; the system monitor performs data transmission with the charger, the battery inspection instrument and the portable feedback type device. The present invention has the advantages of online linearity, convenient economy, energy saving, safety and reliability, and high precision.

This invention belongs to the field of flexible connection components for parabolic trough collectors and the technology of solar thermal power generation. It discloses a flexible connection planar rotary joint for high-temperature parabolic trough collectors, comprising: a shell, a first bushing, four first metal-edged wire-reinforced sealing rings, two second metal-edged wire-reinforced sealing rings, a sealing ring support, a hollow shaft, a sealing ring pressure ring, a second bushing, two anti-rotation pins, adjusting bolts, a threaded flange, injectable soft sealing filler, and three injection port sealing bolts. The shell serves as the base of the planar rotary joint, with three evenly distributed threaded injection ports on its circumference for connecting a one-way valve and a high-pressure injection gun to add injectable soft filler. After the sealing material is injected, the injection threads on the shell are plugged using the sealing bolts on the injection ports. The bushing is located at the bottom of the inner cavity of the shell, and a first set of sealing rings and a second set of sealing rings are respectively arranged on both sides of the injectable soft filler sealing cavity. The anti-rotation pins prevent the second bushing from rotating under the dry friction torque generated by the rotation of the hollow shaft.

The present invention proposes a horizontal wet electrostatic precipitator spray online maintenance device, including a water inlet main pipe, a water inlet branch, a connecting hose, a nozzle pipe, a nozzle and a top plate, the water inlet main pipe is connected to the water inlet branch through a plurality of first valves, two of the water inlet branches form a group of water inlet units, the water inlet units are arranged in a longitudinal interval, each group of water inlet units is provided with an auxiliary water inlet branch, the auxiliary water inlet branch is located between the two water inlet branches, the water inlet main pipe is connected to the auxiliary water inlet branch through a plurality of second valves, a plurality of three-way connecting pipes are connected between the water inlet branch and the auxiliary water inlet branch, the water outlet end of the three-way connecting pipe is connected to the connecting hose, the water outlet end of the connecting hose is connected to the nozzle pipe, and the water outlet end of the nozzle pipe is connected to the nozzle. The on-site installation and adjustment are convenient, and the online maintenance and replacement of the nozzle and the online maintenance of the spray pipe contamination can be realized to ensure the dust removal efficiency.

The application discloses a semiconductor device and a process cavity maintenance method. The maintenance method comprises the following steps: providing a process cavity, a target film layer is deposited on the inner wall of the process cavity, and the target film layer is a semi-insulating oxygen-doped polysilicon film layer; a first gas is introduced into the process cavity, the target film layer is subjected to a first treatment, the target film layer is oxidized to form an oxidized target film layer, and the oxidized target film layer is cracked and peeled off under the action of stress, and the first gas is an oxidizing gas; and a second gas is introduced into the process cavity, and the process cavity is purged. The application can realize online maintenance of the process cavity, maintain the particle performance at a good level, has the advantages of simpler, more reliable, more efficient and faster maintenance, and can greatly reduce the labor cost and the material cost.

The utility model relates to a composite membrane assembly based on an MABR (Membrane Aerated Baffled Reactor) and a denitrification reactor. The membrane elements are arranged in the frame at intervals, each membrane element is provided with a sheet-shaped supporting layer and a first air pipe and a second air pipe which are installed in the frame, a plurality of transverse membrane wires are arranged on the side wall of the supporting layer from top to bottom, each membrane wire is provided with a plurality of suspension cable-shaped membrane wire sections, and the membrane wires are connected with the side face of the supporting layer through the two ends of the membrane wire sections; the first air pipe and the second air pipe are located on the two sides of the supporting layer respectively and connected with the edges of the corresponding supporting layer, the first end of the two ends of each membrane wire is in sealed connection with the first air pipe, the second end of the two ends of each membrane wire is in sealed connection with the second air pipe, and an inner cavity of each membrane wire is communicated with inner cavities of the first air pipe and the second air pipe respectively. The problems that in an existing MABR membrane assembly, the density of hollow fiber membrane filaments is too high, a biological membrane grows fast, the membrane assembly is prone to being blocked, the mass transfer rate of a matrix and metabolites in the biological membrane is affected, and the nitration reaction efficiency is not high are solved.

The application discloses a hot-state magnesia spinel brick surface coating and a preparation method thereof. The surface coating raw material comprises the following components in percentage by weight: aggregate system 40-70%, bonding system 28-50%, sintering aid 1-5%, and additive 1-5%; wherein the aggregate system comprises the following components in parts by weight: magnesia spinel brick regenerated powder 30-50 parts and functional fine powder 10-20 parts; and the bonding system comprises the following components in parts by weight: active alumina micro powder 10-20 parts, light-burned magnesium oxide powder 5-15 parts, and silicon micro powder 3-8 parts. The coating forms a firm chemical bonding interface, the bonding strength is significantly higher than that of a traditional normal-temperature coating, and the anti-peeling capacity is greatly improved; the waste brick is used as the raw material, the cost is reduced, the recycling economic concept is met, the brick life is prolonged, the replacement frequency is reduced, and energy and cost are saved.

The utility model discloses a low-temperature top-mounted fixed ball valve, which particularly relates to the field of ball valves, and comprises a step surface and a sealing surface which are sequentially arranged on a valve body from a middle cavity to an end part, the outer diameters of the step surface and the sealing surface are gradually reduced, a sealing ring is arranged between the head of a valve seat body and the sealing surface of a ball body, and a sealing pressing ring is tightly attached to the sealing ring. The valve seat is fixed on the valve seat body in a threaded connection manner; the valve seat assembly comprises a valve seat body, a plate spring, a fireproof graphite ring, a low-temperature energy storage ring, a valve seat pressing ring and a fastening screw. A pre-tightening nut is in threaded connection with the step face of the valve seat assembly and abuts against the end, away from the ball, of the plate spring. The sealing pressing ring is arranged on the valve seat sealing ring and is fixedly connected through the threads, so that the sealing ring is effectively prevented from deviating when a medium flows, the sealing performance is ensured, and potential safety hazards are reduced. The sealing ring can keep a stable sealing state in the using process, the reliability and safety of the valve are greatly improved, and the defects in the prior art are overcome.

The utility model provides an ammonia spraying device for an activated carbon purification process of sintering flue gas. The ammonia spraying device comprises a flue, and a rectifying part and an ammonia water atomizing spraying device which are arranged in the flue and are sequentially arranged along the flowing direction of the flue gas, the ammonia water atomizing and spraying device comprises a plurality of spray guns, the spray guns are connected with an ammonia water conveying branch and a compressed air conveying branch, a plurality of nozzles used for spraying atomized ammonia water are arranged on the spray guns, and the spraying direction of the nozzles is the same as the flowing direction of flue gas. According to the utility model, the ammonia water is heated and evaporated by utilizing the heat of the original flue gas, an additional heat source is not needed, the operation cost is reduced, and compared with a steam type ammonia water vaporization process, the steam consumption and the power consumption are reduced, and meanwhile, the flue gas flow resistance is also reduced; the intermediate link of ammonia water vaporization is reduced, and higher response speed and adjustment precision can be obtained.

The utility model discloses a rotary heat exchanger air leakage and ash clogging processing mechanism which comprises a cold end center truss, a hot end center truss and a fan, and the outer wall of the hot end center truss and the outer wall of the cold end center truss are both connected with sector plate assemblies. The air entraining end of the draught fan is connected with an air entraining gathering pipe, the end, away from the draught fan, of the air entraining gathering pipe is connected with a tee joint, and the two ends, not connected with the air entraining gathering pipe, of the tee joint are connected with a dredge air gathering pipe and a hot smoke outlet pipe respectively. The outer wall of the dredging air gathering pipe is communicated with a plurality of groups of cold-end fan-shaped plate dredging air pipelines, axial sealing plate dredging air pipelines, axial sealing plate dredging air pipelines and hot-end fan-shaped plate dredging air pipelines; and the air supply end of the fan is connected with an air supply gathering pipe. The utility model solves the problems that the ash cleaning effect is not ideal and the ash clogging becomes the most difficult problem of the rotary air preheater because the accumulated ash is formed and hardened on the surface of the heat transfer element.