164results about How to "Realize online maintenance" patented technology

The invention provides a control method of running of a pulverized coal burner of a pulverized coal pressurization gasification reaction device; the control method is used for feeding grouping control of a plurality of oxygen pipelines and a plurality of pulverized coal pipelines of the pulverized coal burner of the pulverized coal pressurization burner gasification reaction device, and comprises starting, running, stopping and purging of the pulverized coal burner. The control method can achieve simultaneous feeding or grouping feeding of the plurality of oxygen pipelines and the plurality of pulverized coal pipelines of the pulverized coal burner, can also achieve simultaneous stopping or grouping stopping of the plurality of oxygen pipelines and the plurality of pulverized coal pipelines of the pulverized coal burner, can achieve on-line maintenance of the oxygen pipelines and the pulverized coal pipelines, and ensures long-period, continuous and stable safe running production of the pulverized coal pressurization gasification device. A gasifier emergency safety system keeps the device running, and allows the device to be safe to start, stop and gasifier purging.

The invention relates to a maintainable lithium-ion battery and a maintenance method thereof. The maintainable lithium-ion battery comprises a battery cell and a packaging bag, wherein the battery cell is sealed in the packaging bag, a positive and negative connector are left at a side edge of the packaging bag, a channel is also arranged on the lateral side of the packaging bag, and the opening which is positioned at one end of the external side of the packaging bag is sealed in an open manner. The maintenance method of the lithium-ion battery is as follows: discharging the air in the batteryby the channel, adding electrolyte for the battery, vacuuming the battery and the like. The maintainable lithium-ion battery and the maintenance method provided by the invention can effectively improve the performance of lithium-ion batteries and are beneficial for making full use of the lithium-ion battery; in addition, the operation is simple, and the cost is saved.

The invention relates to a storage battery online maintenance system based on a three-port charging and discharging machine, which comprises a first battery inspection instrument, a second battery inspection instrument, an alternating current network, the three-port charging and discharging machine and a system monitor, wherein the first battery inspection instrument is connected with a first storage battery pack; the second battery inspection instrument is connected with a second storage battery pack; the alternating current network provides an alternating current for a direct current power supply system; the three-port charging and discharging machine is respectively connected with the first storage battery pack, the second storage battery pack and the alternating current network, provides conditions for online maintenance of the first storage battery pack or the second storage battery pack and outputs discharge capacity of the first storage battery pack or the second storage battery pack to the alternating current network; and when the first storage battery pack or the second storage battery pack meets the online maintenance conditions, the system monitor outputs a maintenance control instruction according to a preset rule to start the three-port charging and discharging machine to carry out online maintenance on the first storage battery pack or the second storage battery pack. According to the scheme, storage batteries can be simply, reliably and automatically maintained on line, and the storage battery online maintenance system is low in cost, flexible and efficient.

The invention relates to a QDF (quiescent direct furnace) direct reduction technology which comprises the following steps: uniformly mixing a metal-containing raw material and reducing agent powder, and putting into each reducing chamber, wherein in a reducing process, the reducing chambers and the reduced material are all kept in a stationary state; uniformly heating the materials in the reducing chambers by use of the heat generated by the combustion of the fuel in a combustion chamber and a combustion-supporting gas so as to perform a reduction reaction between the metal-containing raw material and the reducing agent, wherein each reducing chamber is a narrow long one-section reactor. According to the technology provided by the invention, the reducing chambers and the reduced material are all in a stationary state, the requirement on the strength of the granular raw material is reduced, and the production efficiency of a granulation process is improved; and the reducing time can be prolonged, and the metallization ratio of the reduction product is improved. The reducing chamber is not provided with a preheating area or a cooling area, the temperature is uniform, the atmosphere is uniform and consistent, and the overall quality of the reduction product is improved. The direct reduction technology has remarkable advantages of wide application range of raw materials, uniform temperature field, easy control on reduction process, high product metallization ratio, high yield and the like.

The invention discloses a sub-chamber back blowing bag type dust collector with a reciprocating movement back blowing air port, and relates to a bag type dust collector. The bag type dust collector can solve the problems that a deashing mechanism of the conventional bag type dust collector cannot realize port-to-port deashing chamber by chamber, the deashing effect is poor, the structure is complex, faults are easy to occur and the like. The bag type dust collector is technically characterized in that: a sub-chamber back blowing deashing device is arranged in a gas purifying chamber, one end of a telescopic back blowing gas pipe is connected with a deashing gas source for introducing back blowing deashing gas flow, and the other end of the telescopic back blowing gas pipe is connected with the movable back blowing air port; and a transmission mechanism draws the movable back blowing air port and the telescopic back blowing air pipe to reciprocate and move to the outlet of the small gas purifying chamber sequentially for performing port-to-port positioning back blowing deashing chamber by chamber. The sub-chamber back blowing bag type dust collector is mainly applied in dedusting treatment before smoke gas in power stations, metallurgy, chemical industry, mining, cement, grain processing and other industries is discharged.

The invention discloses a converter transformer provided with a glass tube type oil-level indicator. The converter transformer comprises a converter transformer body, wherein the top of the converter transformer is communicated with an oil conservator; an air bag is arranged in the oil conservator; the top of the air bag is communicated with one end of an air tube; the other end of the air tube is communicated with one end of a respirator; the other end of the respirator is inserted into a respirator oil cup; the bottom of the converter transformer body is communicated with an oil tube; the oil tube is communicated with a transparent glass tube; a floating ball is arranged in the transparent glass tube; the upper end of the transparent glass tube is communicated with the air tube through an exhaust tube; and a scale line is arranged on the transparent glass tube. A mounting method of the glass tube type oil-level indicator comprises the following steps: emptying the transformer oil in the oil conservator; forming mounting holes in the bottom of the converter transformer body and the air tube respectively; welding the oil tube on one mounting hole, and welding the exhaust tube on the other mounting hole; mounting the transparent glass tube between the oil tube and the exhaust tube, and mounting the floating ball in the transparent glass tube; setting a scale line on the transparent glass tube; opening an oil outlet valve and the exhaust tube. The invention is suitable for the converter transformer.

The invention discloses a reactor protection system two-out-of-three conforming maintenance bypass system, comprising a reactor protection system and a 2/3 conforming logic bypass unit, wherein the 2/3 conforming logic bypass unit comprises a rotary switch S which is provided with four gear contactors and also comprises twelve relays which are all normally open relays. Every four relays of the twelve relays are seen as one group; input ends of input circuits of the four relays of the first group are all connected to first gear contactors, input ends of input circuits of the four relays of the second group are all connected to second gear contactors, and input ends of input circuits of the four relays of the third group are all connected to third gear contactors. According to the system, a bypass device is arranged between a safety monitoring device and a safety logic device so that the protection system maintenance bypass function is added. Device on-line maintenance and test can be achieved; non-planned reactor shutdown probability due to device fault is reduced; the performability of reactors is increased; and production efficiency is guaranteed.

The invention discloses a novel down-mounting ball valve, which is characterized by consisting of a valve body, a valve core assembly, a rotating shaft sealing ring, a rotating shaft, a polytetrafluoroethylene gasket, a water outlet sealing ring, a lower valve cover end face sealing ring, a lower valve cover and a lower valve cover radial sealing ring. The novel down-mounting ball valve has the advantages that: the novel down-mounting ball valve assembly is arranged into an integrated meter shell of a water meter or a heat meter to realize integration of a flow meter and a control valve of the prepayment water meter and the prepayment heat meter; because of the integral structure, the strength, sealing property, high-temperature resistance and high-pressure resistance of the prepayment water meter and the prepayment heat meter are promoted, and the highest bearing pressure is more than or equal to 4MPa and far higher than the pressure limit of industrial standard high-pressure meter 2.5MPa (common heat meter 1.6MPa); on-line (use site) integral disassembly, maintenance and replacement can be performed; parts such as a speed reducer, a control circuit and the like driven by the ball valve are not involved during maintenance and replacement; and the operation is performed directly from the bottom of the ball valve, and disassembly of other parts is not needed.

The invention discloses a material conveying device driven by a linear motor, which comprises a supporting frame (1), drums (2), a conveying belt (3), supporting rollers (4), a linear motor and a controller. It features that the primary windings of the linear motor (6) are arranged along the central line of the conveying belt and are installed on the supporting frame (1) together with the supporting rollers (4). The secondary windings (7) of the linear motor (6), corresponding to the primary windings, are arranged on the inside surface of the annular conveying belt. Secondary plates are transversely arranged along the longitudinal direction of the conveying belt discontinuously in a closed arrangement. The material conveying device effectively reduces the cost and is in favor of automatic monitoring, control, maintenance and management. Meanwhile, the device is uniform in force distribution and stable in operation, which is especially suitable for the long-distance material conveying operation.

The invention discloses a PLC control system and method for dual power supply and communication of a speed regulator hydraulic system. The PLC control system comprises a PLC main station A, a PLC mainstation B and a substation C, and the communication module of the substation C is connected and communicated with the communication module of the PLC master station through a double-channel coaxial cable, and uploads data to the CPU module of the master station in real time. And the touch screen HMI is in communication connection with the CPU module of the PLC master station through the concentrator by taking the Ethernet as a transmission medium, so that real-time data exchange between the touch screen HMI and the PLC master station is realized. And redundant communication between the masterstation and the PC is realized. And the PLC main station A and the PLC main station B are in communication connection through an optical fiber. According to the system, dual PLC control of a redundant power supply and communication is adopted, so that the system is not influenced by a local single fault during operation, and online maintenance can be realized; Meanwhile, normal operation of the system is not influenced during offline repair of fault components, so that the purposes of improving the reliability of the system and reducing the failure rate can be achieved.

The invention provides a gasification system and method for burning combustibles mixed with pulverized coal, including a feed system, a multi-channel gasification burner and a pulverized coal gasification furnace. Wherein the multi-channel gasification burner has eight channels arranged concentrically, and the pulverized coal, blended combustibles and oxygen enter the respective channels of the multi-channel gasification burner through the feed system respectively, so that the oxygen of each layer can be adjusted separately. The proportion of coal can achieve the effect of temperature control separately, which can improve the carbon conversion rate and the composition of effective gas in the synthesis gas. Co-firing of coals with different characteristics.

A matrix for selecting lines of 112 testing platform is characterized in that it is constituted by 1-32 frames LAMS for selecting lines, on which each are mounted a master board LAMM for selecting lines, a board CTP for communication controlling, self-testing and power source, 18-19 boards L16 for selecting 16 lines and a matrix board M32 for selecting 32 lines. The connectors for shorting SHC and passive connecting board STC for self-testing are inserted in the shocket positioned in the back of the board L16 for selecting 16 lines. This invention can ensure that the switching-in does not affect the current operation, and any circuit board can be inserted in and pulled out in hot-line without impairment to normal operation.

The invention discloses a three-dimensional storing and conveying line for green bodies and belongs to the technical field of sanitary ceramic production equipment. The three-dimensional storing and conveying line is used for conveying, inspecting and storing finished products to be inspected in the production process of sanitary ceramic. According to the technical scheme, the products pass through a suspension line, a lower line transferring machine and a sorting and recognizing line after being formed in a forming shop, reach an inspecting and warehousing line for on-line inspection, then reach a horizontal-moving lifting machine through a delivering confluence line and enter a multi-layer storage line. In the delivery process, the horizontal-moving lifting machine automatically conveys the products in the multi-layer storage line to a multi-layer storage and delivery distribution line, and then the products are conveyed to a multi-layer storage and delivery line. The three-dimensional storing and conveying line is initiative in the production process of the sanitary ceramic, fills in the blank of green body conveying equipment, solves the green body conveying problem existing for a long time, realizes automatic conveying, on-line inspecting and three-dimensional storing of the green bodies from the forming shop to product inspection to multi-layer storage, reduces the occupied area of the products in the storage process, greatly improves the inspection efficiency, and lowers the labor intensity of workers.

The invention relates to a displacement sensing device for measuring the piston strokes within hydraulic cylinders, and it particularly relates to a built-in displacement sensing device of hydraulic cylinders with lifting eyes. The said displacement sensor comprises displacement rotation components for sensors, measuring components for displacement sensors and springs. The displacement sensor components mate with springs to control the movement of the piston, and they also mate with displacement sensor measuring components to measure the displacement strokes of the pistons, with the displacement sensor rotation components connected with pistons. The inventions is meant to solve the technical issues like the those caused by the external displacement sensor, and also the defect of lacking built-in opening checkup devices of those hydraulic cylinders with lifting eyes. With this structure, the invention has high precision of measurement and convenient way for installation and maintenance.

A flowmeter with flexible rotor in ring type consists of main body, liquid inlet and outlet, end covers, central rotation shaft, ring type of metering chamber formed between internal wall of main body and external wall of rotation shaft, multiple rotor containers, multiple flexible rotors, metering space with set volume, liquid inlet - outlet guide in thickness being less than or equal to thickness of said metering chamber. Its design accuracy can be up to plus or minus 0.1 %.

The invention relates to a vertical supercritical water oxidation reaction device and a control method. The device comprises an injector, a vertical reaction kettle, an isolation sleeve with cooling and isolation effects, an external heating device, a salt discharge valve, a salt discharge kettle, a salt discharge kettle vent valve, a stop valve, a discharge spray pipe, a temperature sensor and a pressure sensor. Reactants are atomized and mixed in advance through an injector, and a heat management structure adopts a cold and hot separation mode; the structural layout that a built-in sleeve, a feed port and a discharge port are arranged at the top is utilized; the service life of the blow-off valve is effectively prolonged by using a pressure control mode of small-flow continuous discharge and large-flow intermittent discharge; the use efficiency of the reaction device is improved by adopting a parallel control mode of a plurality of discharge valves and a working mode of a salt discharge kettle and a corresponding control valve thereof; in practical application, long-term unmanned operation and online maintenance and detection under partial fault conditions can be realized, the operation efficiency of the device is greatly improved, and the waste liquid treatment period and cost are effectively reduced.

The invention provides a self-suction CEMS multi-point flue gas sampling device and a control method, and aims to overcome the problems of long sampling time and measurement lag. A sampling pipe is connected to the outlet flue of an air preheater. The characteristic that the outlet flue pressure of the air compressor is 1-2KPa lower than the outlet pressure of a denitration reactor is utilized, the pressure difference is far greater than that of the pressure head of a sampling pump and the flue gas can naturally and quickly flow by virtue of the pressure difference so that the quick replacement of the flue gas in the sampling pipe is realized, the sampling lag is eliminated, and the flue gas sampling speed not only depends on the sampling pump, but also depends on the natural circulation of the flue gas by virtue of the flue gas pressure difference between the denitration outlet and the outlet of the air pre-heater. Furthermore, a sampling branch pipe is connected before the pipeline of the sampling pipe passes through the sampling pump of the CEMS, the flue gas is extracted by the sampling pump to enter a CEMS analyzer and experimental verification shows that the sampling time ofthe mode can be shortened by more than 90%.