66results about How to "Guaranteed maintenance safety" patented technology

The invention discloses a recloser of a circuit breaker. The recloser comprises a shell, a forward and reverse rotation motor, a spindle and a driving handle, wherein the forward and reverse rotation motor is arranged in the shell, and the driving handle is used for driving a handle of the circuit breaker in linkage. A transmission blade and a transmission part are rotatably arranged on the spindle, the forward and reverse rotation motor is matched with the transmission blade in a driving and connecting manner, a transmission gear taking the spindle as a rotation center is arranged on the transmission part, a handle gear in mesh transmission with the transmission gear is arranged on the driving handle, an arc groove is formed in the outer surface of the transmission blade corresponding to the transmission part, the center of the arc groove is positioned on the center line of the spindle, an opening is formed in the anticlockwise edge end of the arc groove in the transmission blade, a linkage shaft is rotatably arranged on the transmission part in a combined manner, and the transmission blade and the transmission part are matched structures which are linked anticlockwise and mutually free clockwise. The recloser has the advantages that the handle of the circuit breaker can be reclosed, response time of normal tripping of the circuit breaker cannot be affected and the like.

The invention discloses a wheel-rail type loading and traveling cable crane. The cable crane comprises traveling systems (6), lifting systems (7), a control system (16) and a main truss structure (15) and is characterized in that the traveling systems (6) are movably mounted on traveling guide rails (1) on two sides, the main truss structure (15) is connected between the traveling systems (6), winches (8) of the lifting systems (7) are arranged in the main truss structure (15), lower parts of the winches (8) are connected with lifting tools (19), and the control system (16) and an engine (17) are mounted in the main truss structure (15); each traveling system (6) comprises a traveling mechanism body (4), a tractor assembly (2) and traveling roller trains (3), the tractor assembly (2) is mounted on one side surface of the traveling mechanism body (4), and the traveling roller trains (3) with gaps reserved are connected with two sides of the bottom of the traveling mechanism body (4). The cable crane is simple in structure, efficient, practical, safe, stable and good in economy.

The invention discloses a re-closure transmission mechanism with the clutching function in a circuit breaker re-closure device. The re-closure transmission mechanism comprises a shell, a forward and reverse rotation motor, a main shaft and a driving handle, wherein the forward and reverse rotation motor and the main shaft are arranged inside the shell, and the driving handle is used for driving linkage of a handle of a circuit breaker. A transmission piece and a transmission part are arranged on the main shaft in a rotating mode. A clutching sliding block is arranged on the shell in a slippage mode, wherein the axial direction of the main shaft is the same as that of the clutching sliding block. A linkage plate stretching into the shell is arranged at the inner end of the clutching sliding block. The main shaft is axially sleeved with the transmission part in a slippage mode. The linkage plate and the transmission part are in synchronous linkage in the axial direction of the main shaft. The clutching sliding block drives a linkage shaft of the transmission part to be gradually disengaged from an arc groove axially in the slippage process. The re-closure transmission mechanism has the advantages that clutching control can be carried out on linkage between the forward and reverse rotation motor and the driving handle, and therefore safe line repair is ensured.

The invention discloses a protect device for underneath-type machine-room-less maintenance. The protective device comprises three switches, one is an HD 1370 normal closed limit switch arranged at a position 2m away from floor of a work site on the lowest portion of a cage, the other two are HD1371 normal open switches, one of the HD1371 normal open switches is used for detecting whether the protective device is installed in place or not, and the other of the HD1371 normal open switches is used for detecting whether the protective device is restored in place or not. An electrical safety device used for checking up working position of a stopping device is arranged in the protective device, and therefore, when the mechanical stopping device is at a wrong parking position before being at a working position, all operation of the cage can be prevented, and switch mulfunction or potential safety hazards due to damage of the switches are avoided.

The invention discloses a liquid cooling module and a liquid cooling server. The liquid cooling module comprises a heat exchange box, cold plates, gravity assisted heat pipes and fixed pressing pieces; the two parallel cold plates are connected through the gravity assisted heat pipes, and the outer sides of the gravity assisted heat pipes are sleeved with the fixed pressing pieces used for pressing and fixing the cold plate at the lower end; a heat exchange box is arranged on the cold plate at the upper end, and a liquid inlet nozzle and a liquid outlet nozzle are arranged on the side wall ofthe heat exchange box. A liquid cooling server comprises a case and a liquid cooling module; a fixed cover plate and a movable cover plate are arranged at the upper end of the case; the movable coverplate comprises a first cover plate and a second cover plate; the first cover plate is in butt joint with the fixed cover plate; the second cover plate is in butt joint with the first cover plate; aninstallation groove for containing the liquid cooling module is formed in the butt joint position of the second cover plate and the first cover plate, a baffle used for blocking is arranged in the installation groove, the heat exchange box is arranged outside the case, a liquid receiving groove is formed in the upper end of the second cover plate, and a liquid inlet pipe and a liquid return pipe which are communicated with the heat exchange box are arranged in the liquid receiving groove.

The invention provides a method for detecting various safety belt electric clearances based on model attributes. The method comprises the steps of establishing a three-dimensional verification space;facility classification and assignment; generating and correcting an inspection result; generating a virtual clear distance space; performing cross detection; deriving electronic browsing format reports. According to the scheme, verification can be carried out according to different minimum safety clear distance verification types, verification distance errors of different safety clear distance classifications are eliminated, the quality of designed finished products can be optimized, the design efficiency is improved, and engineering operation, construction and maintenance safety is guaranteed.

The invention provides a convenient-to-install device for overhauling and protecting an electrical automation device. The convenient-to-install device comprises a rack, supporting rods, supporting legs, a control switch, a supporting frame, a hanging ring, fixing nuts, adjusting screw rods, an adjusting handle, an installing frame, installing holes, a movable rotating adjusting overhauling rod structure, a protecting rope structure preventing the device form falling during overhauling and a bendable moving adjusting overhauling illuminating lamp structure. According to the convenient-to-install device, by arranging the supporting frame, the fixing nuts, the adjusting screw rods, the adjusting handle, the installing frame and the installing holes, the electrical automation device can be rapidly installed and fixed, and the overhauling operation can be conveniently carried out; according to the size or model of the electrical automation device, the adjusting handle is rotated, and the adjusting screw rods are adjusted to act in the fixing nuts, so that the adjusting screw rods drive the installing frame to move through bearings, and the distance between the supporting frame and the installing frame can be changed; and through the installing holes, the electrical automation device can be fixed and installed thorough bolts so that overhauling can be conveniently carried out, and the operation is convenient.

The invention discloses a double-groove parent-and-subsidiary type steel cable winding drum and a steel cable winding method. The double-groove parent-and-subsidiary type steel cable winding drum comprises a machine frame seat (2), a winding drum supporting seat (3), a winding drum rotating shaft (4), a winding drum disk (6), a winding drum main groove (7), a socket plate sliding opening (8), a winding drum auxiliary groove (9) and a winding drum isolation plate (10), wherein the winding drum main groove and the winding drum auxiliary groove are connected with the winding drum isolation plate;the winding drum main groove and the winding drum auxiliary groove are connected through the winding drum rotating shaft; the winding drum disk is connected with the winding drum main body; the winding drum disk is arranged on the machine frame seat through the winding drum supporting seat; the socket plate sliding opening is formed in the winding drum isolation plate; one end of a steel cable (1) is twined onto the winding drum auxiliary groove, and the other end of the steel cable (1) penetrates through the winding drum isolation plate through the socket plate sliding opening and is twinedonto the winding drum main groove, so that a first cable head (101) is located on the winding drum auxiliary groove, and is exposed, and a second cable head (102) is located on the winding drum main groove, and is exposed. Through the adoption of the double-groove parent-and-subsidiary type steel cable winding drum disclosed by the invention, the technique difficult problems existing in large-scale hoisting machinery replacement overhauling industry can be solved, the overhauling time is shortened, potential safety hazards are eliminated, and operation efficiency is improved.

The invention discloses a safe maintenance type central air-conditioner with an electromagnetic access door and belongs to the field of central air conditioning equipment. The safe maintenance type central air-conditioner comprises a cabinet and the access door, wherein a movable supporting rod is rotationally arranged at one end of the cabinet, and a fixed supporting rod is arranged at the other end of the cabinet; rollers are arranged at ends of the movable supporting rod and the fixed supporting rod; a strip-type through groove is formed in the movable supporting rod; a sliding column matched with the strip-type through groove is arranged inside the through groove in a sliding mode; a reset spring is arranged in the sliding direction of the sliding column; one end of the sliding column is hinged with a guiding column, and the other end of the sliding column is fixedly connected with a handle; a sliding groove is formed in the cabinet and located at a corresponding motion position of the guiding column, and a clamping groove is formed; a base is arranged at the bottom of the cabinet; an iron block is arranged on the access door; and an electromagnet is arranged at a corresponding position of the iron block and fixedly connected with the cabinet. The problems that a safe operation process of an existing central air-conditioner is inconvenient, the labor cost is high, and the maintenance is unsafe are solved.

The present invention relates to a lockset management method and a device for equipment maintenance, a computer device, a storage medium, and an intelligent electronic lockset. According the method, amaintainer is instructed to receive a temporary intelligent electronic lockset for equipment maintenance by transmitting a maintenance operation ticket to a portable electronic device of the maintainer, then finds corresponding equipment to be overhauled and hangs the intelligent electronic lockset on the corresponding equipment, afterwards tag information obtained by reading a tag on the equipment to be overhauled from the intelligent electronic lockset is received and used to determine equipment information of the equipment to be overhauled on which the intelligent electronic lockset is hung, and then the equipment information of the equipment hung with the intelligent electronic lockset is compared to the equipment information on the maintenance operation ticket to determine whether the intelligent electronic lockset is hung on the equipment to be overhauled specified by the maintenance operation ticket. The method of the invention enriches functions of the intelligent electronic lockset. In addition to locking and unlocking functions, the method also can monitor whether the intelligent electronic lockset is correctly hung on the equipment to be overhauled, thereby further ensuring safety of maintenance.

The invention provides a lifting platform for airplane vertical fin overhauling. The lifting platform comprises a lower-layer platform. A movable work ladder is arranged on the top of the lower-layerplatform. A well frame structure for installing an upper-layer platform lifting device is fixed to the side edge of the top of the lower-layer platform. An upper-layer platform of a cantilever structure is fixed to the side wall of the upper-layer platform lifting device. A locking mechanism used for locking the upper-layer platform lifting device and the well frame structure is arranged between the upper-layer platform lifting device and the well frame structure. The lifting platform can be used for overhauling large airplane tail wings, the lifting platform can be conveniently controlled toascend and descend, so that different overhauling heights are achieved, the tail wing overhauling usage requirement of the lifting platform is met, the overhauling safety is guaranteed, meanwhile, thelabor intensity of operators is greatly lowered, and the work efficiency is improved.

The invention relates to the technical field of electric equipment and discloses a grounding interlocking mechanism for a low voltage plastic casing switch, which is a grounding device for a low voltage switch. A copper bar, an insulating plate and a grounding swinging piece are arranged on a bracket; a grounding bracket is arranged on the copper bar; the plastic casing switch is arranged on the bracket; a switch pull plate is arranged below the plastic casing switch; a grounding switching piece is arranged inside the plastic casing switch; a grounding pull plate is arranged below the grounding swinging piece; a connecting plate is arranged between the switch pull plate and the grounding pull plate; and the lower part of a frame body is provided with a magnetic strip bracket on which a magnetic strip pressing plate is arranged. The grounding interlocking mechanism has obvious breaking indicating points; with the adoption of the grounding interlocking mechanism, the maintenance safety of switch subordinate lines is guaranteed, namely that the safety performance of the grounding switch of a plastic casing circuit breaker is significantly improved; and meanwhile, the operation safety of maintenance staff is greatly improved; and the grounding interlocking mechanism plays the role of guaranteeing the personal safety of maintenance staff and operators.

The invention discloses an anti-misoperation locking control method and system of a grounding device, and a storage medium. The method comprises the following steps: determining a target grounding device in a to-be-processed target station; obtaining a first on-off state of a first control knife switch associated with the target grounding device in the target station, a second on-off state of a second control knife switch associated with the target grounding device in a first adjacent station adjacent to the target station, and a third on-off state of a third control knife switch associated with the target grounding device; and according to the first on-off state, the second on-off state and the third on-off state, performing misoperation-preventive locking control on the grounding operation of the target grounding device. The problem that the maintenance safety is difficult to guarantee when the grounding device is controlled is solved.

The invention relates to a trolley position limiting and identifying plate. The trolley position limiting and identifying plate comprises an insulation board, rectangular scale plates and limiting identification, and through the arrangement of sliding limiting identification, the identification can be arranged according to different vehicle models and safety specifications. Paper limiting identification is not needed to be made repeatedly or massively, paper is saved, the trolley position limiting and identifying plate is economical and environment-friendly, working load of workers is reduced, and work efficiency is improved. Meanwhile, the situation that the attached paper identification is damaged due to prolongation of service life and artificial destruction, so that scales are unclear or bright caution color fades is avoided, thereby maintenance safety is guaranteed, maintenance danger is lowered, and the trolley position limiting and identifying plate is suitable for being extensively used and popularized in the electric power industry.

The invention belongs to the technical field of outdoor electrical equipment bases, and particularly relates to a factory prefabricated outdoor electrical equipment base, and a manufacturing method and a mounting method thereof. The factory prefabricated outdoor electrical equipment base comprises an upper base, a lower base and a well cover; the lower base is connected with the upper base; the upper base is provided with an upper base opening, a lower base opening and a man well head; the well cover is arranged on the man well head; the lower base is of a rectangular box body structure whichis integrally formed by a lower bottom plate and lower base side plates; the upper base is of a rectangular frame structure which is integrally formed by enclosing upper base side plates; a pluralityof cable holes are formed in the side walls of the lower base; cable sealing devices are arranged in the cable holes; and a plurality of ventilation openings are formed in the upper parts of the sidewalls of the upper base. The factory prefabricated outdoor electrical equipment base is a factory reinforced concrete prefabricated piece and is not affected by the factors, such as season, climate and personnel; and the excavated volume of earthwork is low. Moreover, the construction efficiency and the construction quality are both easy to control; and both the turnover rate and the industrialization degree are high.

The invention discloses a traffic light control cabinet, and mainly relates to the technical field of traffic lights. The traffic light control cabinet comprises a supporting seat fixed to the upper part of a stand column of a traffic light, a supporting plate is arranged at the bottom of the supporting seat, and a power inlet socket with a socket facing downward and a power outlet socket with a socket facing downward are arranged at the bottom of the supporting plate; a movable supporting seat is arranged on the lower side of the supporting seat, a motor and a gear are arranged at the bottomof the movable supporting seat, a rack meshing with the gear is arranged on the stand column, a cabinet body is arranged at the top of the movable supporting seat, a power inlet plug matched with thepower inlet socket and a power outlet plug matched with the power outlet socket are arranged at the top of the cabinet body, a supporting cylinder pointing to the stand column is horizontally arrangedat the end, close to the stand column, of the top of the cabinet body, and a movable lock pin is arranged in the supporting cylinder. The traffic light control cabinet has the beneficial effect thatan independent power source lifting mechanism and plug-in electrical connection are adopted, the effectiveness of automatic lifting and the validity of the electrical connection are ensured, the traffic light control cabinet can be firmly locked on the stand column of the traffic light, and safe use is ensured.

The invention relates to the technical field of power supply and distribution of a power system, and discloses a separated compact buried box-type substation, which comprises an underground box installed under the ground, a ventilation column installed at the top of the ground, a heat dissipation box and a low-voltage cabinet installed on the upper surface of the ground, and a wire outlet hole formed in one side of the underground box, a waterproof chuck is installed in the wire outlet hole, a wire outlet pipe is arranged in the waterproof chuck, the other end of the wire outlet pipe is communicated with the low-voltage cabinet, a bridge frame is fixedly connected to the inner wall of one side of the underground box, a transformer is installed in the underground box, an air inlet hole is formed in one side of the underground box, and an air inlet pipe is arranged in the air inlet hole. The box-type substation can be split into three independent modules, namely the underground box, theheat dissipation box and the low-voltage cabinet, free and flexible combination and installation are realized, the limitation of a site is avoided, the high-voltage cabinet does not need to be configured on site, only the low-voltage cabinet and the ventilation column which occupy extremely small ground are left on the ground part, and the occupied area is reduced.

The invention relates to a control system of a semi-continuous and high-speed spinning machine. The control system comprises a central control module, a glue supply control module, a thread-line forming control module, a spinning control module and a winding control module, wherein the central control module is respectively connected with the glue supply control module, the thread-line forming control module, the spinning control module and the winding control module; the spinning control module controls formed thread-lines to walk to a spinning roller which is transversely arranged relative to an operation face of a spinning surface, and the formed thread-lines surround the spinning roller; the spinning control module controls a spinning device to draft, solidify and disacidify the thread-lines by controlling rotation of the spinning roller, and in the processes of drafting, solidifying and disacidifying the thread-lines, the spinning control module controls a washing device to wash the formed thread-lines; the spinning control module controls the formed thread-lines which are drafted, solidified, disacidified and washed to be guided out of the spinning roller to the interior of a hopper. The control system of the semi-continuous and high-speed spinning machine improves the spinning speed, ensures response and walking path of the thread-lines and also ensures the full response of the thread-lines.

The invention discloses a power construction safety protection device and protection system. The power construction safety protection device comprises a protection mechanism and mobile equipment, wherein the protection mechanism comprises an intercepting rod, a first mounting platform and a second mounting platform, one end of the intercepting rod is rotationally connected to the first mounting platform, the second mounting platform is provided with an electromagnetic chuck, the first mounting platform is internally provided with a first central processing module and a first communication module, a camera is mounted in the center of the intercepting rod in an embedded mode, and both the first mounting platform and the second mounting platform are provided with multiple sets of wiring ports; the mobile equipment comprises an equipment shell, a display screen and multiple sets of control buttons, wherein the display screen and the control buttons are embedded in the equipment shell, andthe equipment shell is internally provided with a second central processing module, a second communication module and a storage module. The power construction safety protection device has the advantages of safety protection effect and capability of reducing personal injury of the power construction personnel, and is mainly used for power maintenance protection.

The invention discloses a low-fault cable branch box which comprises a box body 1, wherein an isolating plate 2 is arranged at the middle part of the box body 1; a load switch 3 is arranged at one side of the isolating plate 2; copper bars and cables 4 are arranged at the other side of the isolating plate 2; copper noses are arranged at the end parts of the cables 4; the copper noses are fixed on the copper bars through bolts; a protective cover 5 is arranged at the joint of the copper noses and the copper bars; and the protective cover is fixed on the box body 1 through bolts. The low-fault cable branch box is simple in structure and smart in design, the maintenance security is guaranteed, and wires are prevented from being falsely connected.

The invention discloses an interlock device which comprises an anti-falling rod movably connected with a cabinet body, the anti-falling rod comprises a cross rod and end rods fixedly connected to the two ends of the cross rod, and kidney-shaped holes are formed in the end rods; the interlock device further comprises a lock body assembly and an interlock box; the lock body assembly fixed on the cabinet body comprises bolt holes, a spring bolt and a key hole for accommodating a safety interlock key; the interlock box comprises a limiting pin, unlocking bolts and a spring bolt cavity used for containing the spring bolt; when the interlock box is installed on the lock body assembly through a fastener, the limiting pin is inserted into the corresponding kidney-shaped hole of the end rod; when the safety interlock key rotates to a first position, the spring bolt extends into the spring bolt cavity; and when the safety interlock key rotates to a second position, the spring bolt retreats from the spring bolt cavity, and the interlock box can be detached from the lock body assembly by detaching the fastener. According to the interlock device, the functions of safety interlocking and secondary anti-falling of a cabinet door can be realized through a mechanical structure, and meanwhile, the good waterproof and dustproof protection functions for a lock body are achieved.

The invention discloses an insulation platform used in a screen cabinet and a screen cabinet, and belongs to the technical field of screen cabinets. The insulation platform used in the screen cabinet is composed of a plurality of splicing pieces, the splicing pieces are made of insulating materials, each splicing piece is composed of a bearing plate and a fixed fence arranged outside the bearing plate in a surrounding mode, inserting tongues are arranged on one pair of right-angle sides of each fixed fence in a protruding mode, inserting grooves matched with the inserting tongues are formed in the other pair of right-angle sides of each fixed fence, a plug pin assembly is arranged at the bottom of each bearing plate, and a plug pin rod of each plug pin assembly can slide in the length direction of the bearing plate so as to extend out of the bearing plate. The insulation platform used in the screen cabinet is simple in structure, and maintenance efficiency can be improved while maintenance safety is guaranteed.

The invention discloses a movable maintenance operation platform for a suspension type monorail train. The movable maintenance operation platform for the suspension type monorail train comprises a support structure, fixed platforms, movable platforms, lifting devices and the like. The two fixed platforms are arranged on the inner side of a vertical support of the support structure; the movable platforms are correspondingly arranged on the fixed platforms respectively; the tops of the movable platforms can transversely slide along the support structure; rail beams are arranged on the top facesof the movable platforms; middle horizontal supports are further symmetrically arranged on the support structure; the lifting devices can longitudinally slide along the middle horizontal supports; andcorresponding telescopic and lifting units are transversely arranged on the lifting devices, so that a bogie and a vehicle can be lifted together so as to be disengaged from the track beams. The invention further discloses an operation method of the movable maintenance operation platform. The movable maintenance operation platform for the suspension type monorail train provided by the invention can be matched with disassembling, assembling, transferring, hoisting and the like in the suspension type monorail overhauling technological process, so that the overall overhauling efficiency is improved, the requirements for three-month overhauling, wheel replacement overhauling, key overhauling and comprehensive overhauling can be met, and the applicability is high.

The invention discloses a negative-pressure air inlet cooling device for suspension cylinders of a Maerz kiln. The negative-pressure air inlet cooling device comprises two suspension cylinders connected in parallel through suspension cylinder air inlet pipes and a dust remover box body which is connected with air outlet pipes of the two suspension cylinders, the air outlet pipes are combined and then divided into three branches, a branch I is sequentially connected with the dust remover box body and a flue gas dust removal induced draft fan after passing through an electric control valve I, abranch II is sequentially connected with a suspension cylinder induced draft fan and an electric valve through a pneumatic valve I, a sub-branch is arranged between the pneumatic valve I and the suspension cylinder induced draft fan and is connected between the control valve I of the branch I and the dust remover box body, a second pneumatic valve is arranged on the sub-branch, a third branch is sequentially connected with a diesel fan and a second manual valve through a first manual valve, and the cooling process comprises the step that a suspension cylinder induced draft fan start cooling mode and a suspension cylinder induced draft fan stop cooling mode are set in normal operation. According to the negative-pressure air inlet cooling device for the suspension cylinders of the Maerz kiln, the problems that an existing Maerz kiln with the suspension cylinders is high in production and operation risk and low in kiln production stability can be solved.

The present invention discloses a maintenance ladder in butt joint with the fixed ladder of a transmission tower pole. The maintenance ladder comprises a ground ladder and plate-type hooks. The top end of the ground ladder is provided with a circular pipe. The circular pipe is at least provided with two plate-type hooks and is hung onto the cross bar of the fixed ladder of the transmission tower pole. The upright column of the cross bar of the fixed ladder of the transmission tower pole is clamped between two plate-type hooks at the middle part of the circular pipe by the hooks. According to the technical scheme of the invention, the upright column of the cross bar of the fixed ladder of the transmission tower pole is clamped between the two plate-type hooks by the hooks, and the upright pipe of the ground ladder is sleeved by a sleeve on a hoop. Therefore, the maintenance ladder can be reliably connected with the fixed ladder of the transmission tower pole. Even in extremely windy days, the maintenance ladder is effectively prevented from shaking. Meanwhile, maintenance equipment can be conveyed to the upper part of the transmission tower pole through a hanging pulley and a pulley block. The maintenance ladder is convenient in maintenance and construction, labor-saving and time-saving. The maintenance ladder ensures the maintenance safety, and improves the labor efficiency.

The invention discloses a method and device for rapid on-line sulfur extraction and catalyst rapid temperature rise, comprising a main fuel gas pipeline (10), an acid gas pipeline (11), a main combustion furnace (12), a sulfur recovery device (13), a main The fuel gas pipeline (10) and the acid gas pipeline (11) are respectively connected to the main combustion furnace (12), and the outlet pipe of the main combustion furnace (12) is connected to the sulfur recovery device (13), wherein: The acid gas shut-off valve A (1) and acid gas shut-off valve B (3) on the acid gas pipeline (11) are provided with a nitrogen gas pipeline (9); the main fuel gas pipeline (10) is provided with a gas pipeline (8), the main Fuel gas pipelines (10) are divided into two groups and connected to the main combustion furnace body and head respectively. The two groups of fuel gas pipelines are respectively equipped with fuel gas shut-off valve A4, fuel gas shut-off valve B (5), gas pipeline (8) A gas valve (7) is provided on the top, and a fuel gas shut-off valve C (6) is provided between the main fuel gas pipeline (10) and the gas pipeline (8). The invention has a good sulfur extraction effect during shutdown, avoids overheating of the catalyst bed during startup and shutdown, rapidly raises the temperature of the catalyst during startup, and ensures the maintenance safety of the device at the same time.

The invention discloses a safety protection device and protection system for electric power construction, including a protection mechanism and a mobile device. The protection mechanism includes an intercepting rod, a No. 1 installation platform and a No. 2 installation platform. On the No. 1 installation platform, an electromagnetic chuck is provided on the No. 2 installation platform. A No. 1 central processing module and a No. 1 communication module are arranged inside the No. 1 installation platform. A camera is fitted in the center of the interceptor rod. Both the No. 1 installation platform and the No. 2 installation platform are provided with multiple sets of wiring ports; the mobile device includes a device casing, a display screen embedded in the device casing, and multiple sets of control buttons. A No. 2 central processing module, a No. 2 communication module and a storage module are provided. The invention has the effect of safety protection and can reduce the personal injury of electric construction workers, and is mainly used for electric power maintenance and protection.

The invention discloses a method and device for on-line rapid sulfur extraction and rapid heating of a catalyst. The device comprises two sets of main fuel gas pipelines (10), an acid gas pipeline (11), a main combustion furnace (12) and a sulfur recovery device (13); the main fuel gas pipelines (10) and the acid gas pipeline (11) are connected with the main combustion furnace (12), and an outletpipe of the main combustion furnace (12) is connected with the sulfur recovery device (13), wherein an acid gas stop valve A (1) and an acid gas stop valve B (3) on the acid gas pipeline (11) enteringthe main combustion furnace (12) are provided with nitrogen pipelines (9); and the main fuel gas pipelines (10) are provided with coal gas pipelines (8), the two sets of main fuel gas pipelines (10)are connected with a furnace body and a head of the main combustion furnace correspondingly, the two sets of fuel gas pipelines are provided with a fuel gas stop valve A4 and a fuel gas stop valve B (5) correspondingly, the coal gas pipelines (8) are provided with coal gas valves (7), and fuel gas stop valves C (6) are arranged between the main fuel gas pipelines (10) and the coal gas pipelines (8). The shutdown sulfur extraction effect is good, the overtemperature phenomenon of a catalyst bed layer is avoided in the vehicle starting and shutdown processes, the catalyst is heated rapidly in the vehicle starting process, and meanwhile, the overhaul safety of the device is ensured.

A vehicle-mounted rail replacing device is characterized in that a power device is mounted on a locomotive chassis; a wheel set mounted under the locomotive chassis lies on a track; a cab and a locomotive control mechanism are arranged at the two ends of a carriage, respectively; a first row of guide wheel device and a second row of guide wheel device are arranged on the two sides of the locomotive chassis, respectively, wherein the structures of the first row of guide wheel device and the second row of guide wheel device are as same as each other; steel rail exits are formed in the two ends of a locomotive, respectively; a first suspension arm seat and a second suspension arm seat are arranged at the tops of the two ends of the locomotive, respectively; a first suspension arm and a second suspension arm are inserted in holes in the first suspension arm seat and the second suspension arm seat; a first hand-drive block and a second hand-drive block are suspended on suspension rings at one ends of the first suspension arm and the second suspension arm; first rail-clamping pliers and second rail-clamping pliers are mounted at the lower ends of the hand-drive blocks, respectively; and a pulley and a winch are mounted on a carriage chassis, respectively. Power is provided to the rail replacing device through a vehicle-mounted hydraulic system and an electric system; a steel wire rope on the winch is enabled to act through operating a control device; and steel rails are conveyed out or conveyed in from the exits in the two ends of the carriage under the cooperation of the hand-drive blocks and the rail-clamping pliers.