75results about How to "Reduce on-site installation workload" patented technology

The invention discloses a light curtain detection device without a dedicated sync cable, and a method therefor. The interior of a light curtain transmitter in the device is provided with infrared transmitting tubes, and the interior of a light curtain receiver is provided with receiving tubes, wherein the infrared transmitting tubes are corresponding to the receiving tubes in a one-to-one manner. A clock frequency dividing module is connected with a reference data generation module and a light pulse generation module comprising a sync code. The reference data generation module is connected with the light pulse generation module comprising a synchronous code. A phase locking ring module is connected with a frame synchronization module, and the frame synchronization module is connected with an in-place detection module and a multi-channel switch control module. According to the invention, a frame synchronization code which is reliable in capturing and strong in capacity of resisting disturbance is added before a first light pulse of the transmitter, and the light curtain receivers sequentially carry out serial working through employing a quick phase locking ring algorithm with a quick bit synchronization speed, and 16 light pulses. The device employs the characteristics of parallel processing of an FPGA to achieve the real-time in-place detection of a high-speed movement object.

The invention belongs to the technical field of electric equipment and particularly discloses a ring main unit which comprises a PT power cabinet, a distribution network automation cabinet and a plurality of switch bodies. The PT power cabinet is connected with the distribution network automation cabinet and the switch bodies and provides power for the distribution network automation cabinet and the switch bodies. The ring main unit further comprises a storage battery module which is used for providing emergency power for all circuits on the condition that external power supply of the PT power cabinet is off. The distribution network automation cabinet is connected with the switch bodies, collects data of the switch bodies, monitors the switch bodies, and communicates the collected data with the outside. The switch bodies are respectively connected with the PT power cabinet and the distribution network automation cabinet and are used for completing switching-on and switching-off of the ring main unit. By the adoption of the ring main unit, the overall design of the ring main unit is optimized, so that internal connecting wires of the ring main unit can be simplified, on-site installation workload can be reduced, and maintenance-free can be realized, cost can be reduced, and power supply reliability can be improved.

The invention provides a special bus duct for wind power, comprising a multiphase bus tube conductor (3), an insulating support (5), a fixed block (6), a conductor flexibility connecting piece (7) and a housing flexibility connecting piece (8), wherein the multiphase bus tube conductor (3) is hollow, and the ends of the multiphase bus tube conductor (3) are suppressed into a linear nose shape. The special bus duct utilizes the advantages of small alternating current (AC) skin effect coefficient and preferable electro-conductibility of a hollow pipe conductor, so that the appearance of a large-current bus duct conductor is minimized, and a tubular conductor structure has higher structural strength and rigidity compared with a rectangle conductor structure, thus ensuring the stability of the bus duct conductor and the insulating structure of the bus duct conductor in an irregular pneumatic environment. In the special bus duct, a rigid connecting structure at a joint of a commonly-used bus duct is changed into a flexible connecting structure, thus a capacity that a bus duct structure adapts to a wind turbine tower structure to bear irregular air is improved. The special bus duct can be applied to electric energy output circuits of different high-capacity and synchronizing wind power generator sets.

The invention relates to a dust remover, and concretely relates to a filter bag dust remover with a self-circulating ash removal device. The dust remover comprises a base support, an airflow uniform distribution and flow guiding device, a filter bag chamber, an air purifying chamber, a filtering assembly, a self-circulating ash removal system, an ash bucket, an electric control system, a heat insulation layer, a platform, a stair and a pre-coating system; an air inlet is provided with the airflow uniform distribution and flow guiding device, forward and upward airflow channels are arranged in a bag zone, filter bags are arranged in a rectangular chamber in groups, the mouths of a plurality of the filter bags are compressed through bolts through a steel plate to make the filter bags be firmly clamped in the hole of a tube sheet, the tube sheet is provided with a filter bag hole, a hole plate is smooth without burrs, and the filter bags form a double sealing structure at the upper portion of the tube sheet and in the hole of the tube sheet. The dust remover adopting low pressure air generated by a centrifuge fan to purge in order to close and leakage-free ash removal has the advantages of blowing effect guaranteeing, no light damages to the filter bags, and safe and reliable running, and adopts programmed control to purge row by row in sequence in order to realize the ash removal purpose.

The invention discloses a large lattice structure with plate type grid substructure and cylindrical surface type crossed space truss system, comprising a main structure and a substructure in the main structure. The main structure is a cylindrical surface type large lattice structure composed of crossed horizontal and vertical space trusses with size of 10 to 30m. The substructure is ordinary double-layered plate type grid and internally embedded in the large lattice in the four-corner point support or surrounding multi-point support way to form a structure with smaller lattice embedded in the larger lattice. The invention can effectively conquer the problem of strut buckling, improve the global stiffness and stability of the structure at a large amount, save steel and reduce construction cost. The large lattice structure can be processed in the factory and then transported to the field to assemble so as to greatly reduce the field installing work and shorten the construction time and fit for super large span spatial latticed structure of 150 to 200m.

The invention discloses a gas insulated switchgear, including at least two isolation units and two earth units, breaker units connect with the isolation units and the earth units, and a shell contains insulating air and the breaker units, and the axis of the shell is in horizontal direction. The described two isolation units and the earth units are set on both sides of the breaker unit, which are the composite isolation-earth switch base on isolation function and earth function, and it achieves a mechanical interlock about the isolation function and earth function. The two isolation-earth switches are placed on each side of the two isolation-earth switch containers, and the top of each container vertically connects a metal airtight container and an insulation sleeve, and the insulation sleeve is set vertically. The isolation-earth switch connects to a conductor overhead through the insulation sleeve on the left and connects to a bus conductor of electricity overhead through the insulation sleeve on the right.

The invention discloses a transformer neutrality point combination electric device comprising a base (1), wherein the base (1) is grounded and provided with an insulating support post (2), and the insulating support post (2) is provided with a horizontal high-voltage arm (8'), and the horizontal high-voltage arm (8') is connected with a transformer neutrality point (N) and provided with a fixed contact (7); the base (1) is also provided with a grounding post (5), the grounding post (5) is provided with a horizontal grounding arm (9') which is sleeved with a grounding sleeve pipe (10), an insulating bushing is arranged between the grounding arm (9') and the grounding sleeve pipe (10), and the grounding sleeve pipe (10) can slide relative to the grounding arm (9'); the high-voltage arm (8') is provided with a high-voltage electrode (8), the grounding arm (9') is provided with a grounding electrode (9), the high-voltage electrode (8) and the grounding arm (9') are coaxial, oppositely arranged and form a protection gap (J), and the grounding sleeve pipe (10) is provided with a division and combination adjusting device. The invention has simple structure and high aggregation degree.

The invention belongs to the technical field of online monitoring of transformers, and in particular relates to a device and method for online monitoring dissolved gas in transformer oil based on a spectrum technology. An oil sample acquisition unit is connected with an oil-gas separation unit; the oil-gas separation unit is connected with a gas detection unit based on the spectrum technology; thegas detection unit based on the spectrum technology is connected with a data acquisition unit; the data acquisition unit is connected with a control and processing unit; and the control and processing unit is separately connected with the oil sample acquisition unit, the oil-gas separation unit, the gas detection unit based on the spectrum technology, a storage unit, a communication unit and a human-computer interaction unit. The device in the invention is good in stability, high in reliability and free from carrier gas, consumable and maintenance, and is not influenced by noise and mechanical vibration; the field installation workload is low; installation and disassembly are easy; the application prospect of the device is wide; and, once being implemented, the device has greater economicbenefit and social meaning.

The invention discloses a super-large span cylindrical combined bar system large grid structure, which comprises a main structure and a substructure which is arranged inside the main structure, and is characterized in that the main structure is a large grid structure which consists of lattice type members, and the grid dimension is between 10 and 30 meters; and the substructure is a common double-layer flat-plate grid rack and is embedded into a large grid in a mode of four-corner supporting to form a structural form of making a small grid sleeved into the large grid. The super-large span cylindrical combined bar system large grid structure can effectively overcome the defect of destabilization of compression bars, greatly improve the overall rigidity and the stability of the structure, avoid destabilization of the compression bars, save the steel consumption, and reduce the manufacturing cost of engineering. Moreover, both combined bars and the flat-plate grid rack substructure can be manufactured and processed in a factory into basic components with small number, conveyed and assembled on the spot into an overall structure, so that the field assembly workload is greatly reduced and the construction period is shortened. The super-large span cylindrical combined bar system large grid structure is suitable for a spatial reticulated shell roof structure with a super-large span of more than 200 meters.

The invention discloses an operating mechanism for a circuit breaker. The operating mechanism for the circuit breaker comprises a switching-on module unit and a switching-off module unit. The switching-on module unit is composed of a left side board, a right side board, an energy storage motor, an energy storage compression spring, a crank arm, an energy storage shaft, a cam, a chain wheel, a tripping shaft, a trigger, a microswitch, a switching-on electromagnet and an energy storage sign board. The switching-off module unit is composed of a left side board, a right side board, one or more tripping electromagnets, a switching-off half shaft, a pinch plate, a trigger and a switching on / off sign board. The operating mechanism for the circuit breaker has the advantages that the operating mechanism is practical and low in production cost, and the spring operating mechanism of the circuit breaker is combined into a modularized unit, is independent from the circuit breaker, and is integrally assembled and disassembled conveniently; a switching on module and a switching off module in the modularized operating mechanism can be independently assembled in advance and are each of one specification, and therefore the variety and the number of spare parts and stored parts are both greatly reduced, and the production efficiency of products is improved.

The invention provides a support foundation for a solar photovoltaic power station and an onsite construction method for the support foundation. The support foundation comprises a central post, a base, a tubular section and earthwork, wherein the central post, the base and the tubular section are precast, and the earthwork is filled on site. The base is arranged at the bottom of the central post which is positioned in the center of the upper portion of the base, the tubular section is arranged on the base, the planar size of the tubular section is not larger than that of the base, a cavity is formed between the tubular section and the central post and filled with the earthwork, and the weight of the earthwork accounts for a part of the total weight of the support foundation. More than 30% concrete consumption can be reduced by means of the technical scheme as compared with an existing solid foundation technical scheme. Since concrete is smaller in intrinsic weight, precast work amount, logistics freight volume and onsite workload are correspondingly reduced, and the design weight of the support foundation is not reduced after the cavity is filled with the earthwork. By means of the support foundation, construction period of the photovoltaic power station can be greatly shortened while construction cost of the photovoltaic power station is greatly reduced.

The invention relates to a novel vertical mechanical reversing energy-saving pumping unit. The novel vertical mechanical reversing energy-saving pumping unit is characterized in that a transmission system adopts a mechanical reversing, two-way gear drive and oil-immersed lubrication fully-enclosed reduction gearbox for realizing the positive and negative rotation of a head sheave of the pumping unit, to ensure the immense inertia of a pumping rod and a counterweight to decelerate, buffer until stop before the pumping unit runs to an upper dead point or a lower dead point, a crank buffer device is arranged so that the impact energy is smoothly absorbed and stored, the stored energy is released after passing through the upper dead point and the lower dead point, and a motor is started at an upper dead point or a lower dead point under the conditions of basically smooth input speed and torque. Through the adoption of mechanical reversing and closed oil-immersed lubrication, the adaptability of the pumping unit to the harsh environment is higher; as the motor runs in the same direction all the time, a complex electric control system is not provided, the reliability is high, and the servicing, the maintenance and the repair are simple; and the equipment is controlled to run by a PLC (programmable logic controller), and importantly, the system adopts a two-way backup, and therefore, both the reliability and the stability of the pumping unit are enhanced.

The invention relates to a spatial panel point structure of a steel truss and web PC (poly carbonate) combined bridge and a construction method of the spatial panel point. An embedded plate is embedded in concrete at a panel point of the spatial panel point structure of the steel truss and web PC combined bridge and connected with two steel truss and web pipes forming a 90-degree include angle and comprises two welded-together rectangular steel plates and at least two triangular reinforced steel plates, the triangular reinforced steel plates are welded to the inner sides of the rectangular steel plates forming a 90-degree included angle, and ends of the two steel truss and web pipes are respectively welded to the outer sides of the two rectangular steel plates. By the spatial panel point structure of the steel truss and web PC combined bridge, the problem about stress concentration and single function can be sufficiently solved.

The invention relates to a unit window system capable of realizing heat-insulated door window installation for a door window large opening. The unit window system comprises a protection frame, wherein the protection frame is fixed on a structural wall by virtue of an expansion screw; the protection frame is internally and uniformly provided with a plurality of middle frames; a plurality of openings are formed between the protection frame and the middle frames; the openings are internally provided with unit windows; one end of each unit window is fixedly connected with the protection frame by virtue of a press plate I; the other end of each unit window is fixedly connected with the middle frames by virtue of press plates II; and the press plates I and the press plates II are provided with decorative cover plates on the outer parts. The unit window system has the following beneficial effects: a building window large opening is detached into small openings, the frame system is added, so that the service life of the building window is prolonged; and in addition, the unit window is made of a heat-insulated aluminum alloy material, the material is optimized, and the heat-insulated effect is obvious; and meanwhile the installation is convenient and the unit window system has practicability.

The invention discloses an integrated intelligent high-pressure injecting liquid medicine automatic dispensing and injecting device. The integrated intelligent high-pressure injecting liquid medicineautomatic dispensing and injecting device comprises a power supply unit, an intelligent control system, a sieving weighing metering unit, a stirring mixing unit, a storage unit and an injecting unit.According to the set liquid medicine concentration and the volume of the stirring mixing unit, the needed using amount of liquid medicine is calculated through the intelligent control system, the liquid medicine is injected into the stirring mixing unit by sieving and weighing (metering), and a solvent is injected, the liquid medicine is transported to the storage unit after stirring mixing. In repairing, the well-dispensed medicine agent in the storage unit is transported by the injecting unit through a high-pressure liquid pump to a repairing drilling device according to the set pressure andthe flow quantity, and polluted soil and underground water are repaired. Liquid medicine mixing dispensing of the device is automatically conducted through control of the intelligent control system according to the consuming amount of the medicine agent, the residual amount of the medicine agent in the storage unit and the medicine agent dispensing speed. Integrated design is adopted, all the composing units are integrated in a standard container, and transporting and using are convenient.

The invention discloses a movable skid-mounted type organic solid waste treatment device. The movable skid-mounted type organic solid waste treatment device comprises a control and power supply unit,an air inlet unit, an air chamber, a heating unit, a reactor, a smoke collecting hood, a tail gas component detection unit and an extraction unit. The air inlet unit conveys the fresh air to the air chamber, the heating unit heats the air in the air chamber to enable the temperature to be equal to the appropriate temperature, the organic matter in soil in the reactor can evaporate, or petroleum pollutants (oil sludge) can smolder, the tail gas is collected by the smoke collecting hood, the tail gas component detection unit preliminarily detects the components in the tail gas, the tail gas is conveyed by an extraction system to a tail gas treatment device, and therefore efficient and energy-saving treatment of the organic solid waste is achieved. Temperature sensors are installed in the airchamber, installed on the surface of the heating unit and installed in the reactor, the power of the heating unit and the air inlet quantity are controlled to achieve the control over the temperatureof the interior of the air chamber and the temperature of the interior of the treated solid waste, and therefore the whole process control is achieved. The whole device is integrated in a compartmentcarrier, can be moved and mounted in a skid mode, is easy to transport and hoist and achieves the safe, efficient, energy-saving and environmentally friendly treatment effects.

An outdoor 2 multiply 27.5 kV solid-sealing vacuum modular device of electrified railway includes brackets, two connection branches mounted on the brackets that are parallel and independent to each other and an integrated automation control box, a bipolar solid-sealing disjunctor is mounted onto middle part of the brackets, an outgoing line connection terminal is located on a first solid-sealing strut type transformer, moving contact of a first bipolar disconnector is located on bracket of the first solid-sealing strut type transformer, between the first bipolar disconnector and the disjunctor is provided with current transformer, stationary contact of the first bipolar disconnector is located on the current transformer which is connected with a single polar solid-sealing disjunctor; an incoming line connection terminal is located on a second solid-sealing strut type transformer, moving contact of a second bipolar disconnector is located on the second solid-sealing strut type transformer, stationary contact of the second bipolar disconnector is located on a solie-sealing polar of the disjunctor. The invention can reduce floor space efficiently and capitalized cost, and has good reliability and good prosucts reliability, which is convenient to maintain.

The invention relates to a dry-process precast floorboard. The floorboard comprises an aluminum profile frame, wherein a cement-fiber board layer, a lower polyurethane adhesive layer, an aluminum honeycomb layer, an upper polyurethane adhesive layer and a face material layer are sequentially distributed in the aluminum profile frame through hot-press laminated forming, indent waterproof adhesive tape mounting grooves are formed in middle parts of outer peripheries of the aluminum profile frame, a waterproof adhesive tape is mounted in the waterproof adhesive tape mounting groove of each side of the aluminum profile frame, two waterproof adhesive tapes mounted in the waterproof adhesive tape mounting grooves of two adjacent sides of the aluminum profile frame are staggered up and down, andthe floorboard is supported on a floor by adopting a height-adjustable threaded supporting seat. The dry-process precast floorboard has the beneficial effects that on one hand, the manufactured floorboard is light in weight and superior in flexural resistance; on the other hand, a face material is directly laminated on the upper surface of the floorboard, the sticking of the face material on siteby using cement mortar is avoided, the workload of site mounting is reduced, and the problem of long construction cycle is solved; and the problem of leakage between adjacent floorboards and between the floorboards and walls is solved.

The invention discloses an integrated treatment device. The integrated treatment device is characterized in that ponds with circular pipes and square openings are serially connected with one another to form a treatment system, aeration frames are mounted at the bottoms of circular pipe and square opening units, aeration devices are mounted in the aeration frames, a plurality of biological tank filler frames are longitudinally mounted in the aeration frames in a combined manner, conical connectors are arranged in the middles of the aeration frames and the biological tank filler frames, the conical connectors are nested in one another to form a closed vertical pipeline when the aeration frames and the biological tank filler frames are longitudinally combined with one another, and waterproof light sources are mounted on the aeration frames. The integrated treatment device has the advantages that the integrated treatment device is used for sewage biological flora treatment processes and can be quickly, easily and conveniently mounted, and photosynthesis conditions and heat-insulation conditions can be provided for the sewage biological flora treatment processes by the treatment integrated device; the circular pipe and square opening units bring convenience for directly drilling holes by the aid of well digging machines and are in vertical dropping mounting modes, transmittance and heat-insulation glass plates are mounted on the tops of the circular pipe and square opening units, and the multiple circular pipe and square opening units can be combined with one another to form the complete treatment system.

The invention discloses a jacking-type arc-shaped steel plate external-prestressing steel rope diverter which comprises a supporting system and a reinforcing system. The supporting system is composed of a supporting plate, an arc-shaped steel plate, multiple connecting plates and a cavity sealing plate, the top face of the supporting system is the supporting plate of a rectangular structure, the top face of the supporting plate is jacked on the bottom face of a beam, the arc-shaped steel plate is arranged on the bottom face of the supporting plate, one end of the arc-shaped steel plate is in welded connection with the supporting plate, an internal cavity is formed between the supporting plate and the arc-shaped steel plate, the connecting plates are arranged in the internal cavity, the cavity sealing plate is arranged at the other end of the supporting plate, the bottom face of the arc-shaped steel plate receives steering bearing pressure of an external steel rope, the reinforcing system is composed of beam-side clamping plates and reinforcing plates which are symmetrically arranged on two sides of the beam, and the beam-side clamping plates and the reinforcing plates are connected on the top face of the supporting plate, and used for connecting the diverter with the beam and improving rigidity of the supporting system. The jacking-type arc-shaped steel plate external-prestressing steel rope diverter is safe, reliable and large in turning radius, the steel rope and the diverter are maintained to be in tangential attachment, and convenience is brought to mounting.

The invention relates to a low-cost integrated steam turbine lubricating oil system for power station auxiliary equipment, which comprises an oil tank, a bearing oil supply part, a jacking shaft oil supply part and an oily fume purification discharge device. According to the invention, the bearing oil supply part, the jacking shaft oil supply part and the oily fume purification discharge device are all arranged on the upper end face of the oil tank; the low-cost integrated steam turbine lubricating oil system for the power station auxiliary equipment leaves a factory after being assembled; field installation workload is reduced; each part of the low-cost integrated steam turbine lubricating oil system is arranged in a centralizing manner; the low-cost integrated steam turbine lubricating oil system is convenient to maintain; before leaving the factory, the system is subjected to performance testing, so that field debugging work is reduced and equipment availability is ensured; a temperature control valve is added, so that the oil supply temperature of lubricant oil is stabilized.

The invention relates to a hoisting process of a full-circle slewing crane. The hoisting process mainly comprises the following steps: component lifting: double hooks of a 1600T floating crane are utilized to hang a slewing chassis and a final-assembled lifting lug at the top of a propeller strut so as to hoist the slewing chassis and a propeller strut component; hoisting in place: the floating crane is utilized to shift the component to the position above a spud leg, and the component is adjusted in place; the component is slowly laid down onto a cylinder body, and all double-end studs can penetrate in place; after some of bolt pairs are pre-tightened, the floating crane can release the hooks, and all the bolt pairs are pre-tightened subsequently; mounting of remaining parts. The hoisting process has the advantages that a slewing bearing and all the slewing parts are mounted in place, integrally hoisted in place on site and connected with the cylinder body, so that the workload of site mounting is greatly reduced, and the mounting progress is accelerated.

The invention discloses a critical speed flow metering system. The system comprises a throttle mechanism and a data acquiring measurement system, wherein the throttle mechanism comprises a valve body and a pore plate arranged in the valve body, the data acquiring measurement mechanism comprises a PC, a control cabinet, a temperature sensor and two pressure transmitters; the temperature sensor and the two pressure transmitters are fixed on the valve body, one pressure transmitter is located at the downstream side of the pore plate, and the other pressure transmitter and the temperature sensor are located at the upstream side of the pore plate; a data acquiring module and a communication module are arranged in the control cabinet, the temperature sensor and the two pressure transmitters are connected with the data acquiring module, and the data acquiring module is used for transmitting acquired data to the PC by the communication module. The system disclosed by the invention is capable of automatically, accurately and quickly measuring the flow of fluid at the critical speed according to the acquired data, and the aim of integrating data acquisition, transmission and metering is realized.

An outdoor 2 multiply 27.5 kV solid-sealing vacuum modular device of electrified railway includes brackets, two connection branches mounted on the brackets that are parallel and independent to each other and an integrated automation control box, a bipolar solid-sealing disjunctor is mounted onto middle part of the brackets, an outgoing line connection terminal is located on a first solid-sealing strut type transformer, moving contact of a first bipolar disconnector is located on bracket of the first solid-sealing strut type transformer, between the first bipolar disconnector and the disjunctoris provided with current transformer, stationary contact of the first bipolar disconnector is located on the current transformer which is connected with a single polar solid-sealing disjunctor; an incoming line connection terminal is located on a second solid-sealing strut type transformer, moving contact of a second bipolar disconnector is located on the second solid-sealing strut type transformer, stationary contact of the second bipolar disconnector is located on a solie-sealing polar of the disjunctor. The invention can reduce floor space efficiently and capitalized cost, and has good reliability and good prosucts reliability, which is convenient to maintain.

The invention provides a box-type house convenient to assemble and disassemble and an installing method thereof. The box-type house comprises at least one floor. Each floor comprises a plurality of box bodies where people are allowed to move, each floor further comprises a plurality of equipment interlayers, and each equipment interlayer is installed above the box body corresponding to the equipment interlayer in a spliced mode. Meanwhile, the joints of each equipment interlayer and the corresponding box body are the same in shape and size. Each equipment interlayer is internally provided witha modularized pipeline matched with a central air conditioner. Compared with a traditional mode that ceilings are arranged in the box bodies, penetrating connection of pipelines is more convenient, the mutual effect caused by the environment between adjacent rooms is reduced, and no influence is generated on the interior net storey height. The arrangement of an air-conditioner air hose, a water pipe and tail-end equipment in each interlayer module also adopts the modularized design so as to facilitate factory-like assembling prefabrication, and on-site installation workloads are reduced. Thesizes of the equipment interlayers and the sizes of the box-type house box bodies are kept consistent, and transportation, hoisting and secondary disassembling usage are facilitated.

The combined central air conditioner of has the technological scheme including installing the water source heat pump set inside a casing, installing water divider and water collector separately on two sides of the casing, connecting the water outlet of the water divider and the water inlet of the water collector separately to the water supply pipe and the water returning pipe, connecting the water inlet of the water divider and the water outlet of the water collector separately to the water source heat pump set via the water path switching device, and installing door to the casing and electric controlling box inside the casing connected to the electric equipment inside the casing. The present invention has the advantages of small size, compact structure, etc. and is suitable for heating and cooling in hotel, office, residential building, etc.

The invention provides a multifunctional ignition device and belongs to the field of ignition devices. The multifunctional ignition device comprises a compressed air supply device, a fuel gas supply device, the deflagration chamber, a flame tube and a full-automatic ignition control box; the compressed air supply device comprises at least one primary air main pipe; the fuel gas supply device comprises at least one primary fuel gas main pipe; the air out of the compressed air supply device and the fuel gas out of the fuel gas supply device are mixed to form the combustible mixed gas which is connected with the flame tube in the deflagration chamber; the full-automatic ignition control box is used for performing automatic ignition and accordingly the combustible mixed gas is ignited automatically or manually. According to the multifunctional ignition device, the automatic ignition control in the control chamber or other distant places and the on-site direct operation of automatic ignition and manual ignition at the position of the ignition device can be achieved simultaneously.

The invention provides a condenser. The condenser comprises a first module, a second module and a third module; before being sold, the first module, the second module and the third module are separated independent individuals, the first module comprises a first shell, a first front water chamber and a first rear water chamber, and the first front water chamber and the first rear water chamber are arranged on the left side and the right side of the first shell correspondingly; the second module comprises a second shell arranged on the first shell, a second front water chamber and a second rear water chamber, wherein the second front water chamber and the second rear water chamber are arranged on the left side and the right side of the second shell correspondingly; heat exchange pipe bundles are arranged in the first shell and the second shell; the third module comprises a connecting neck which is arranged on the second shell and used for receiving exhaust gas of a steam turbine; the first front water chamber is provided with a cold water inlet, the second front water chamber is provided with a cold water outlet, and the first rear water chamber is communicated with the second rear water chamber through a pipe. According to the condenser, due to the adoption of the first module, the second module and the third module which are independent, transportation is facilitated, and the site mounting workloads are reduced.

The invention relates to an anti-interference coal mine electromechanical equipment start-stop detection method, which comprises the following steps of installing two or more magnetoresistance chips outside a cable, and calculating a magnetic field value of any point of the cable according to parameters R and r of the cable, current IA, IB and IC values of the cable and an installation angle of the magnetoresistance chip, and determining the relationship between the magnetic field value and the current of the cable through the magnetic field vector sum of each magnetoresistance chip. Accordingto the anti-interference coal mine electromechanical equipment start-stop detection method, magnetic field distribution around the three-phase cable is analyzed theoretically, magnetic flux leakage around the cable is detected through the magnetoresistance chip, effective detection of the magnetic flux leakage of the cable is ensured in combination with a related algorithm, and misjudgment causedby magnetic field offset at a certain position is prevented; and a magnetic shielding structure is designed, so that the magnetoresistance chip is prevented from being interfered by a surrounding magnetic field, and the stability and reliability of equipment start-stop detection are effectively improved.

The invention discloses an integrated measuring connector device for sealed equipment. The device comprises a hollow thermal insulation shell and a plurality of measuring tubes, the lower end face of the thermal insulation shell is closely arranged on the outer surface of the sealed equipment, the measuring tubes are arranged on the hollow thermal insulation shell in a penetrating manner, one end of the measuring tube penetrates through the lower end face of the hollow thermal insulation shell and the outer surface of the sealed equipment and contacts a measured medium in the sealed equipment, and the other end of the measuring tube penetrates through the top or side of the hollow thermal insulation shell and is connected to a measuring instrument. The device is simple and skilful in structure, and is very practical in fluid measurement of the sealed equipment; the temperature of fluid at the end of a blind tube can be accurately measured via a temperature measuring blind tube, and the pressure of fluid can be conveniently and accurately measured via a thimble check valve, so that the device can be widely applied to sealed environment conditions of high temperature, high pressure, refrigerating and the like.