80results about How to "Does not affect safe operation" patented technology

The invention relates to a process for producing dimethyl carbonate from industrial synthetic gas. According to the invention, O2, CO, N2, NO, and methanol are delivered into an esterification system for esterification; heavy component drawn from the esterification system is subjected to recovery treatment in a wastewater tower; light component drawn from the esterification system passes a compressor II and is subjected to a carbonylation reaction in a carbonylation reactor; the carbonylation reaction product is delivered into a second condensation separation tower, and is subjected to gas-liquid separation; separated liquid phase is refined in a pressurized rectification tower; part of non condensable gas is discharged from the separated gas phase, and the gas phase is continued to be subjected to a reaction in the esterification system; the discharged non-condensable gas is delivered into a denitration reactor; light component at a top of the pressurized rectification tower is subjected to further recovery treatment in a methanol recovery tower; heavy component from the pressurized rectification tower is delivered into a product tower; dimethyl carbonate is drawn from the top of the product tower, and dimethyl oxalate is drawn from the bottom of the product tower. The process has the economical and practical characteristics of low equipment investment, environment friendliness, energy saving, high catalyst efficiency, high raw material utilization rate, and the like.

The invention relates to a method for producing Portland cement clinker with incineration slag of municipal solid waste. The method solves the problem of crust and blockage caused by chlorine through the reconstruction of the prior kiln which is realized by mounting a by-way air exhaust device. For a kiln system with a kiln row and a furnace row which are independent from each other, the by-way air exhaust device is arranged in an uptake of a kiln end gas chamber in the kiln row close to a five-stage cylinder; while for common industrial kiln, the air exhaust device is arranged between an outlet of decomposing furnace and an inlet of the five-stage cylinder or arranged at an uptake of an outlet of the five-stage cylinder; the fly ash passes through a kiln head, the kiln end gas chamber, or the decomposing furnace and then is sprayed into the kiln. The use frequency of the by-way air exhaust device is between once per four hours and once per three days, the temperature of the air entering the by-way air exhaust device is controlled to be more than 950 DEG C. the method has the advantages of small reconstruction investment, low treatment cost, production of Portland cement clinker having wide application range and meeting JC/T853-1999 standards of Portland Cement Clinker, realization of reclamation, contribution to the development of cyclic economy, and reduction in consumption of natural resources and energy of the cement industry.

The invention discloses a storage battery performance on-line monitoring system and a storage battery performance on-line monitoring method. Each storage battery on-line monitoring unit comprises an acquisition unit, an internal resistance measuring unit and a communication unit; batteries in a storage battery pack are divided into a plurality of units; a load and the batteries in each unit form a closed-loop circuit, and the batteries are discharged; the acquisition unit acquires discharging parameters of each battery; the internal resistance measuring unit calculates the internal resistance of each battery according to acquired information and uploads the internal resistance to the communication unit; the communication unit accesses a local area network and transmits data to a server; after receiving the data, the server analyzes, processes and stores the data; the data are published in a webpage form through a built-in web publishing function; and a computer in the local area network checks the situation of each storage battery pack by accessing a webpage. By adoption of a multi-cycle on-line testing method, safety and reliability are realized, the discharging internal resistance is tested in a grouped mode, and during test, safety operation of a power system is not influenced. The invention has the advantages of stable and accurate test result and convenient testing process.

The invention discloses a device used for detecting a direct current power supply connected to an alternating current power supply and direct current power supply ripples and used in a transformer substation. The device comprises a transformer substation direct current bus, a working power module (15), an alternating current voltage sampling circuit (3), a band-pass filtering circuit (4), a direct current voltage sampling circuit (8), a filter circuit (9), a ripple voltage sampling circuit (10) and the like. A CPU module (6) is connected with a voltage analog-digital conversion circuit (5), a direct current voltage analog-digital conversion circuit (10), a ripple voltage analog-digital conversion module (13), an alarm uploading communication interface (16), a display screen (7), a man-machine interaction keyboard (11) and an alarm output circuit (14) respectively. The device is used for quickly detecting whether the alternating current power supply is connected to the direct current power supply and giving an alarm in time when detecting an abnormity; the device also can be used for on-line monitoring of ripples of a direct current system charging unit, thereby being capable of greatly improving the reliability of the direct current power supply and safe operation of a power grid.

The invention discloses a concrete gravity dam transverse joint large area sawing and cutting construction method which consists two parts of drilling and cutting; the construction method is carried out according to the following steps: selecting a full hydraulic drill as a drilling tool; confirming the drilled parameters; drilling and fetching the core; cataloging the fetched rock core; measuring the hole deviation of drilling; selecting a diamond wire saw to sew and cut; the cutting method, selecting horizontal drilling to finish the transverse joint cutting of the dam, selecting a diamond rope and confirming the cutting parameters; the linear speed of cutting should reach 18m/s to 22m/s; the cutting washing liquid pump amount at least reaches 70L/min, then the dam can be under a normal running state; the sawing construction does not affect the dam to run safely, does not damage the dam body structure, does not damage the transverse joint of the dam body to stop water, has a low cost, has a fast construction speed, has a high construction precision and can be broadly applied in the reinforcing and alternation constructions of the old dams and disabled dams in the engineering fields of water conservancy and hydropower.

The invention discloses a detection device for an insulation resistance of electrical equipment. The detection device comprises an insulation resistance measuring circuit 2 and an isolation resistance 5, wherein a high-voltage end 4 of the insulation resistance measuring circuit 2 is connected with one end 6 of the isolation resistance 5, the other end 7 of the isolation resistance 5 is connected with any one conductor in a conductor 9, which is electrically connected with the electrical equipment, a low-voltage end 3 of the insulation resistance measuring circuit 2 is connected with ground 10, and the insulation resistance measuring device 1 can be used for applying the direct current voltage between the conductor 9 and the ground 10, and measuring an insulation resistance value between the electrical equipment, which is electrically connected with the conductor 9, and the ground 10.

A GIS basin-type insulator distributed capacitor-based bus voltage measurement device disclosed by the present invention is characterized by taking a GIS basin-type insulator scattering capacitor as ahigh-voltage arm and a voltage divider connected with a GIS basin-type insulator as a low-voltage arm, and utilizing the capacitor voltage division principle to measure the voltage between a guide rod in a GIS and a GIS shell, thereby real-timely monitoring the operation voltage of the GIS. In addition, a voltage divider shell and the GIS shell are in equipotential connection, thereby being ableto effectively shield an interference electric field generated by the other electrified equipment of a transformer substation, and guaranteeing the measurement accuracy.

The invention provides a non-contact electric field type induction power access method. The method is characterized in that: the method comprises the following steps that: a, an induction electrode plate is used to approach a line wire, so that a capacitor is formed by the induction electrode plate and the line wire; and the capacitor is utilized to receive electric energy on a power transmission line; and b, a high transformation ratio and high excitation impedance transformer is applied to convert a high voltage and low current power source that is transmitted by the induction electrode plate into a low voltage and heavy current power source, so that the converted power source is suitable for application to a general electric device. According to the invention, a working power source that is needed by and is suitable for monitoring equipment can be stably obtained; the effect is obvious; and the method and the apparatus are beneficial for popularization and application in the on-line monitoring field of electric network equipment.

The invention discloses a monitoring device for a settlement cavity value of a medium-low-speed magnetic suspension low track bearing-rail beam and a roadbed. The monitoring device comprises an inductive strainometer and an inductive sensor testing instrument. The inductive strainometer comprises a ground anchor threaded steel bar set, a lower flange plate, an induction coil, an upper flange plate, an anchor plate and a magnet. The roadbed can drive the induction coil to settle synchronously when settlement happens. A bearing-rail beam bottom slab can drive the magnet to settle synchronously when settlement happens. When the settlement generated by the roadbed is different from the settlement generated by the bearing-rail beam bottom slab, the magnet and the induction coil cut each other to generate currents, and therefore the settlement difference value of the bearing-rail beam bottom slab and the roadbed can be obtained through the inductive sensor testing instrument. According to the monitoring device, data reading is conducted outside a closed loop of the roadbed and prevented from being influenced by the closed loop, the large transportation load of a train, and track panel space limitation of the top of the bearing-rail beam, and the settlement difference value between the bearing-beam rail bottom slab and the roadbed can be observed and measured at any time.

The invention relates to an efficient heat regenerative system and method. The efficient heat regenerative system comprises a high pressure cylinder, an intermediate pressure cylinder and a low pressure cylinder which are communicated in sequence. The efficient heat regenerative system further comprises a pressure header and an extraction back-pressure type feed pump turbine. The pressure header is provided with at least two steam inlets. One steam extraction opening of the intermediate pressure cylinder is communicated with one steam inlet of the pressure header. A steam exhaust outlet of the feed pump turbine is communicated with the other steam inlet of the pressure header. A steam exhaust outlet of the pressure header is communicated with a steam inlet of each heat regenerative device. A steam inlet of the feed pump turbine is communicated with a steam exhaust outlet or a steam extraction opening of the high pressure cylinder or the other steam extraction opening of the intermediate pressure cylinder. The steam exhaust pressure of the feed pump turbine is controlled by normal steam exhaust of the feed pump turbine, steam extraction and supplementation of the intermediate pressure cylinder and an overflow system, and exhaust back pressure can be effectively controlled within a reasonable value under the condition that the pressure of the pressure header is fixed and a unit has different loads. The steam exhaust humidity can be guaranteed, efficient operation of the feed pump turbine is ensured, and the problems of overpressure of a deaerator and cavitation of a feed pump are avoided.

The invention discloses an equipment arrangement structure provided with a single-row induced draft fan behind a dust catcher and a flue gas system. The equipment arrangement structure provided with a single-row induced draft fan behind the dust catcher comprises the single-row induced draft fan, a desulfurization absorption tower and a chimney, wherein the single-row induced draft fan, the desulfurization absorption tower and the chimney are successively connected by flues; the center lines of the single-row induced draft fan, the desulfurization absorption tower and the chimney are positioned on the same plane; the desulfurization absorption tower and the chimney are both vertically arranged; the single-row induced draft fan is laterally arranged on the outer side of the desulfurization absorption tower; the outlet of the single-row induced draft fan is back onto the desulfurization absorption tower; an outlet flue is connected by directly facing the inlet of the desulfurization absorption tower after slowly rotating. All pieces of equipment behind the dust catcher are subjected to spatial combined arrangement of a horizontal straight line shape, so that the arrangement among all pieces of equipment is more compact, occupied lands are reduced, the length of connection flues is reduced so as to save the materials of the flues, all pieces of equipment behind the dust catcher are reasonably arranged, and a stereo space behind the dust catcher is effectively utilized.

The invention discloses a lap joint structure used for improving redundancy. A left suspension frame unit and a right suspension frame unit are connected through two lap joint devices. The two lap joint devices are installed in a left and right reversely-arranged mode. When a suspension fault happens to one suspension frame unit, one lap joint device can directly suspend the faulty suspension frame unit, so that the faulty suspension frame unit does not fall to a track, and a line operation fault is avoided. Due to the fact that fixing supports and pull rod structures are connected through knuckle bearings, the longitudinal freedom degree and the transverse freedom degree between the two suspension frame units can be guaranteed, meanwhile, pin shafts are adopted for connection in the pullrod structures, the vertical freedom degree of the two suspension frame units in the uphill and downhill processes can be guaranteed, and the structural uncoupling capacity of a train in the normal linear and bend traveling processes can be guaranteed through the fixing supports and the pull rod structures. The invention further discloses a walking part using the above lap joint structure and themedium-low-speed magnetic levitation train.

The invention discloses an underground mould bag pile supporting method. The method includes the following steps that (1), pore-forming is conducted by using a drilling machine to form a mold bag hole, an injection pipe is arranged in the mold bag hole, a grouting outlet hole is formed in the injection pipe, the injection pipe is internally provided with a separator, a mold bag is arranged in themiddle rear section of the injection pipe, at least one grouting outlet hole formed in the injection pipe communicates with the mold bag, a draining pipe is arranged between the rear section of the mold bag and the outer wall of the injection pipe, and the front section of the injection pipe includes a segmented mold bag; (2), first grouting equipment is firstly used for injecting first grout intothe injection pipe to make the mold bag be saturated, then second grouting equipment is used for injecting second grout into the injection pipe, and the second grout flows out of the injection pipe from a front grouting outlet hole; and (3), grouting is conducted on the mold bag hole alternately, and grouting is conducted on a mold bag pile I firstly, and then grouting is conducted on a mold bagpile II after a mold bag I expands fully and achieves certain strength until a mold bag pile supporting wall structure is formed. The underground mould bag pile supporting method has the advantages ofbeing good in stress condition, capable of stopping water, capable of effectively controlling excavation subsidence and the like.

The invention discloses a remotely-operated field-monitoring early-warning device of a circuit breaker and an implementation method thereof, relates to the technical field of power grid running safety, and particularly belongs to a device capable of sending effective prompt information on the spot when a high-voltage room switch is operated remotely and an implementation method thereof. The remotely-operated field-monitoring early-warning device comprises a shell, wherein a single-chip microcomputer, and a power supply module, a communication module, a sound-light alarm module and a voice alarm module which are connected with the single-chip microcomputer respectively are arranged inside the shell. The remotely-operated field-monitoring early-warning device is arranged in a high-voltage equipment room, and accesses a station layer switch in a transformer substation without causing any unsafe factor on other all equipment. Even if the device fails inside, safe running of any other equipment is not influenced, and safety risks caused by the failure of the device do not exist. The remotely-operated field-monitoring early-warning device has the positive effect of increasing the safety coefficient in the field of power grid operation.

The invention discloses a novel choke plug assembly for using a pressurized water reactor to prepare a radioactive source. The novel choke plug assembly comprises a connecting plate and stainless steel choke stoppers. The connecting plate is provided with mounting parts used for mounting the stainless steel choke stoppers. The 24 mounting parts are distributed in a scattered manner. The novel choke plug assembly further comprises N radioactive rods which are used to absorb neutrons and produce radioactive isotopes, wherein N is a natural number which is less than or equal to 24. The radioactive rods are correspondingly mounted on N mounting parts in a suspended manner, the stainless steel choke stoppers are correspondingly mounted on the remaining mounting parts in a suspended manner, and the radioactive rods and the stainless steel choke stoppers are parallel to each other. The novel choke plug assembly for using a pressurized water reactor to prepare a radioactive source not only can limit the reactor core coolant bypass flow, but also can produce radioactive isotopes, has remarkable economic benefit, and can greatly satisfy the needs of industrial, agricultural and medical use. The invention further discloses a radioactive rod.

The invention provides a transformer neutral point capacitive DC blocking device adopting a high-capacity high-voltage capacitor and BOD protection. The device comprises an isolating switch, the high-capacity high-voltage capacitor, a voltage divider, a resistor, a discharging gap, a current mutual inductor and a current sensor. The isolating switch, the high-capacity high-voltage capacitor, the current sensor and the current mutual inductor are connected in series and connected between the neutral point of a transformer and the ground. The voltage divider, the resistor and the discharging gap are respectively connected in parallel with the high-capacity high-voltage capacitor. After the device is connected in series with the neutral point of the transformer, DC current entering the neutral point of the transformer can be effectively eliminated without influencing normal grounding of an AC system or passing of AC zero sequence current so that safe operation of the system can be ensured. The device is easy and convenient to operate, compact in structure, small in size and convenient to transport without influencing the overall layout of intra-station equipment after installation. Besides, the high-capacity high-voltage capacitor is high in withstand voltage, high in current withstand capacity and also high in safety and reliability.

The invention provides a device for quickly collecting oil and gas leaked from an oil-gas pipeline, and relates to a leaked oil and gas collecting device. According to the technical scheme, the device comprises seal rings, magnets, steel cables, butt-joint sleeves, a butt-joint sleeve joint, a guide tube and a valve, wherein the seal rings are attached to two ends of each semi-annular butt-joint sleeve, and compacted onto the leakage pipeline by utilizing the attraction force between the magnets and the pipeline or the winding state of the steel cables; the butt-joint sleeves are jointed through the magnets or nylon hook-and-loop fasteners, and externally connected with the guide tube; and through the valve, the flow volume and the flow rate of outputted oil and gas are changed. The device has the beneficial effects that when the device is utilized for pipeline repairing as well as oil and gas collection, the pipeline can be maintained without production suspension; the maintenance cost is low, the operation is simple, and the safe operation of the pipeline is not influenced; and accordingly, the oil-gas pipeline leakage repairing as well as oil and gas collection can be quickly achieved.

The invention discloses a method for improving the troubleshooting efficiency of a shear pin system of a water turbine and belongs to the technical field of maintenance of water turbine equipment in power plants. According to the method, in order to overcome defects existing in design and installation of an original system, segmenting of the whole system is determined so that all shear pins can be controlled independently, it is that a hand control valve is additionally installed on an inlet of an air supply branch pipe of each shear pin, an air inflation test is carried out on the air supply branch pipes of all the shear pins independently, when the pressure is kept for 30min, the inflated air supply branch pipes and connectors of the shear pins are brushed with soap water if the pressure is found to decrease, and a fault point is judged out according to foaming conditions. The method overcomes the defects that for maintenance personnel, because the number of the connectors of the shear pin air supply system is too large, the troubleshooting range is wide, an air leakage point is different to find and determine, the troubleshooting work hours are long, working efficiency is low, and the unit cannot recover to be normal timely. After the improvement, the troubleshooting range is shrunken, the technology is easy and convenient to carry out, work hours are shortened, the defects are eliminated timely, and safe operation of the master equipment is not affected after the implementation.

The invention relates to a mistaken-opening-preventing and locking device and method for switch cabinet isolation baffles. According to the technical scheme, the device comprises a cabinet body, and the cabinet body is provided with the two isolation baffles; the two isolation baffles are provided with a first fixing sheet and a second fixing sheet respectively, the first fixing sheet and the second fixing sheet are connected through two locking sheets, the first fixing sheet and the second fixing sheet both form an L-shaped structure through two face plates, and the first fixing sheet and the second fixing sheet are each provided with a first through hole and a second through hole; each locking sheet is of a rectangular structure and is provided with three through holes, two through holes in each locking sheet serve as mounting holes, and one through hole in each locking sheet serves as a lock hole; the first fixing sheet and the second fixing sheet are connected with the locking sheets respectively, the two locking sheets are connected through the lock hole, and the lock hole is locked through an electromagnetic lock. The mistaken-opening-preventing and locking device and method for the switch cabinet isolation baffles have the advantages that the fixing sheets and the locking sheets are simple in structure, cost is low and mounting is convenient.

The invention discloses a portable laser cleaning online control method and system. The method comprises the steps that image information of to-be-cleaned electrical equipment is collected, wherein the electrical equipment is deployed in an unattended place, and the image information is collected by image collection equipment in the unattended place and then transmitted back to a remote control end; the remote control end recognizes rust on the surface of the to-be-cleaned electrical equipment according to the image information; and the electrical equipment is subjected to defect elimination at the remote control end in a remote control mode according to the analysis and processing result of the rust, wherein the analysis and processing result at least comprises one of the position of the rust in the electrical equipment and the attachment degree of the rust. According to the method and system, the technical problems of equipment loss and insufficient stability of a power system caused by power failure due to burnout accidents caused by easy overheating of the electrical equipment in an unattended substation are solved.

The invention relates to a noncontact electromagnetic passive cutting magnetic line power taking device which is arranged on an unmanned aerial vehicle. The device comprises an antenna (1), a separation circuit (2), a transformer (3), a rectifying module (4) and a voltage stabilizing module (5) which are connected in turn. When the unmanned aerial vehicle flies near the ultrahigh voltage power transmission line, the antenna (1) generates induced voltage and electromotive force because of the effect of the magnetic field and the electric field in the power transmission line. The separation circuit (2) transmits the alternating current generated in the antenna (1) to the voltage stabilizing module (5) through the transformer (3) and the rectifying module (4) and directly transmits the directcurrent generated in the antenna (1) to the voltage stabilizing module (5). The voltage stabilizing module (5) outputs rated power for charging of the unmanned aerial vehicle. Compared with the devices in the prior art, the working power required for charging of the storage battery of the unmanned aerial vehicle can be stably obtained so that the effect is obvious, and the device is favorable forpopularization and application in the field of online monitoring of the power grid equipment and especially can enhance the high voltage line power transmission unmanned aerial vehicle inspection endurance capacity.