40results about How to "On-site layout is convenient" patented technology

The invention relates to an alternating-current controllable paralleling reactor comprising a transformer type main reactor and a step reactor. Wherein, the first coil is the main coil which connects the network directly; the second coil is the control coil outside which a break and a thyristor controller are mounted; the third coil is the compensating coil outside which a filtering compensating unit is mounted; and the transformer type main reactor and the second side-connect step reactor are both mounted in a fuel tank to form the body of controllable reactor. The alternating step controllable single-phase paralleling reactor comprises the body with high resistance, the breaker, the thyristor controller and the central controller, and it has the functions and characters which common reactors do not have, including: simply adjusting, rapid response time, non-harmonic-wave, lower noise, lower vibration, high reliability, lower consumption, and it can separate the harmonic wave to reduce the effect to electrified wire netting. The invention can be used in the electrified wire netting of extra-high voltage and long-distance power transmission.

The invention discloses an intelligent toilet management system based on a distributed data acquisition technology, so as to acquire the toilet cubicle use state information and the environment data of a plurality of intelligent toilets. Each intelligent toilet comprises a plurality of toilet cubicle sensing modules, an environment data sensing module, an intelligent toilet data cloud platform andan intelligent terminal, wherein the plurality of toilet cubicle sensing modules and the environment data sensing module transmit the acquired environment data of each intelligent toilet and the acquired use state information of each toilet cubicle to the intelligent toilet data cloud platform through an NB-IoT communication module respectively; the intelligent toilet data cloud platform is in communication connection with the plurality of toilet cubicle sensing modules and the environment data sensing module for gathering the environment data of each intelligent toilet and the use state information of each toilet cubicle through the NB-IoT communication module and issuing and pushing the information to the intelligent terminal; and the intelligent terminal is wiredly or wirelessly connected with the intelligent toilet data cloud platform for regularly refreshing the environment data of each intelligent toilet and the use state information of each toilet cubicle and performing real-time display.

The invention discloses an intelligent control system of impulse water turbines. The intelligent control system comprises a speed controller PLC and a stacked hydraulic servo device. The stacked hydraulic servo device comprises needle control units connected with needles correspondingly and deflector control units connected with deflectors correspondingly. The needle control units and the deflector control units are connected with the speed controller PLC. The output end of the speed controller PLC is connected with an opening side electromagnetic valve and a closing side electromagnetic valve of each needle switching valve through a power amplifier. Each needle switching valve controls an opening cavity and a closing cavity of a needle servomotor through a needle electrohydraulic converter. The invention provides the control system characterized by simple structure and high reliability and suitable for multi-needle and multi-deflector impulse units; with the unit type structural design, the digital water turbine speed adjusting system is characterized in that the hydraulic control systems of the needles and the deflectors are designed as completely identical and independently-controlled digital hydraulic units, so that intelligent hydropower station establishment is realized.

The invention belongs to the technical field of industrial energy conservation and environmental protection, and particularly relates to a tube nest type fluoroplastic flue gas-flue gas heat exchanger. The tube nest type fluoroplastic flue gas-flue gas heat exchanger comprises a heat exchanger shell, heat exchange pipes and a supporting device, wherein the heat exchanger shell comprises a vertical untreated flue gas flue and a horizontal purified flue gas flue; the plurality of heat exchange pipes are vertically arranged along the direction of the untreated flue gas flue to form heat exchange pipe railings and are fixed in the heat exchanger shell by the supporting device; and untreated flue gas vertically flows in the heat exchange pipes of the heat exchange pipe railings, purified flue gas horizontally flows outside the heat exchange pipes of the heat exchange pipe railings, and therefore, the flow directions of the untreated flue gas and the purified flue gas are perpendicular to each other. The tube nest type fluoroplastic flue gas-flue gas heat exchanger is applied to high energy-consuming industries such as electric power, building materials and metallurgy, operates at an outlet of a wet desulphurization device, and recycles heat of untreated flue gas at a flue gas inlet of the wet desulphurization device to heat purified flue gas at a flue gas outlet of the wet desulphurization device, thereby increasing the dispersive capacity and emitting height of flue gas emitted by a chimney and eliminating industrially frequent gypsum rain and white smoke phenomenon.

The invention provides a micro-module data center used for solving the problem that an existing data center micro-module needs external circulation heat dissipation, and is low in refrigeration efficiency, large in occupied area and difficult to assemble; the micro-module data center disclosed in the invention comprises a comprehensive cabinet and at least one set of IT equipment cabinet; the comprehensive cabinet comprises a cabinet body with a containing cavity, a power supply assembly, a monitoring alarm assembly and an air conditioner; a front door body is arranged on the front side of the cabinet body, and a rear door body is arranged on the rear side of the cabinet body; a closed space is defined by the cabinet body, the front door body and rear door body; the air conditioner is arranged at the bottom of the containing cavity; a cold air channel is formed between the air conditioner and the front door body, and a hot air channel is formed between the air conditioner and the rear door body; the air conditioner can draw cold air from the air conditioner to the cold air channel, and can draw the hot air from the hot air channel to the air conditioner; and according to the micro-module data center, the isolation design of closing the cold and hot channels is adopted, so that gas mixing is avoided, the return air temperature is greatly improved, the refrigeration efficiency is improved while the PUE is reduced, the space is saved, and the rapid arrangement, the visual display and the intelligent management are achieved.

The invention relates to a post-cast strip structure and a construction method. The construction method comprises the following steps: arranging an independent supporting body formed by a bottom column supporting plate and a back removal bottom column on the lower part of a back removal bottom mold and arranging a pouring platform column and a hoop side supporting beam on the back removal bottom mold to form a concrete pouring construction platform on a first-removal mold plate; arranging a flexible connecting bar between an upper folding plate and a lower folding plate and enhancing the transverse rigidity of a floorslab side mold through a reinforcing insertion plate; closing the upper part of a channel of the post-cast strip by a cap sealing coiled material and a coiled material rib plate, and closing two ends of the channel of the post-cast strip by a suspended supporting rod and an end closing body to close the post-cast strip at multiple angles; sliding a scraper blade cross beamand a rigid scraper blade along the upper surface of post-cast concrete; and arranging a steam pipeline on the lower surface of a steam curing bracket and a closed tarpaulin on the outer side to maintain the post-cast concrete with steam. The post-cast strip structure can improve the post-cast strip mold plate supporting quality and efficiency and the concrete pouring construction quality and efficiency and improve the stress performance of the construction structure and protect the construction environment.

The invention discloses a foam generating method and application thereof to fire extinguishment and a fire extinguishing method. The foam generating method comprises the step of mixing gas with a foaming substance to cause foaming of the foaming substance, wherein at least part of the gas is instantaneously generated by a gas source, and the ratio of the volume of the gas which can be generated bythe gas source to the volume of the gas source is not lower than 40. According to the foam generating method, a way of mixing the gas basically generated by the gas source in situ with the foaming substance is adopted for the first time; the ratio of the volume of the gas generated by the gas source to the volume of the gas source is relatively high, so that the size of a container for storing the gas source can be greatly reduced, and small-size storage equipment can replace a huge air compressor, air compressor unit or other high-pressure gas storage equipment. Inert media such as liquid nitrogen is used for participating in foaming, an inert gas is released after foam is broken, and the inert gases can also inhibit combustion on the surface of a combusted material, so that accelerationof extinguishment of a fire disaster is facilitated.

The invention discloses rotational flow dissolved air floatation sewage treatment equipment. A tank body is internally sleeved with an inner tank cylinder with the same central line; the bottom parts of the tank body and the inner tank cylinder are respectively connected with a mud discharge pipeline, wherein the adaptive part of the upper part in the tank body is provided with a residue collecting round top; the tank body side wall which is adaptive to the lowermost part of the residue collecting round top is provided with a residue discharge pipeline; the top of the tank body is provided with a tail gas pipeline; a water intake pipeline penetrates through the tank body and is connected with the adaptive part of the inner tank cylinder; a water drainage pipeline comprises a main water exhaust end opening and an end opening connected with an inlet of a dissolved air pump; the inlet of the dissolved air pump is also connected with a dissolved air source pipeline; an outlet of the air dissolved pump is connected with one end of a backflow pipeline; the other end of the backflow pipeline is connected with a releaser positioned at the adaptive part of the inner tank cylinder. The rotational flow dissolved air floatation sewage treatment equipment provided by the invention is applied to wastewater treatment for each industry, has the characteristics of high treatment efficiency, low running cost, simple structure, easiness in operation and maintenance and the like, is stable and favorable in effluent quality, is high in technology adaptability, and has good economical and social benefits.

The invention discloses a titanium concentrate ball-milling system which comprises a raw material belt hopper, a raw material belt conveyer, a raw material bucket elevator, a ball-milling system fan and a bag type deduster, wherein the raw material belt conveyer is arranged under the raw material belt hopper, the raw material belt conveyer is matched with the raw material bucket elevator, a collecting device is arranged at the joint of the raw material belt conveyer and the raw material bucket elevator, the collecting device comprises a collecting end and a collecting pipeline, one end of the collecting pipeline is connected with the collecting end while the other end of the collecting pipeline is connected with the ball-milling system fan, and the ball-milling system fan is connected with the bag type dedustor. The system disclosed by the invention reduces dust which enters air, has a good effect of collecting mineral powder, and is improved by using the existing system, so that the system has the characteristics of being low in cost and improving the enterprise revenue.

The invention discloses a method for diagnosing a local overheating fault of a doubly fed asynchronous generator. First, vibration sensors are placed on the surface of the brush and slip ring of a laboratory doubly fed induction generator according to the brush and slip ring system vibration method principle and the vibration propagation path to sense the vibration signals of the system during operation in real time; then, a data collector collects the vibration signals detected by the vibration sensors, and uploads the vibration signals to a principal computer; and finally, the principal computer stores the vibration signals and performs calculation on the vibration signals, and judges and locates a fault by using the 937.5-1562.5Hz signals in the vibration signals. The fault diagnosis method of the invention is accurate and effective, and has high diagnosis accuracy.

The invention discloses a foam production method using a liquidizing medium and the application of the foam production method and a firefighting method. The foam production method comprises the following step: mixing a liquidizing medium with a foaming substance, so as to enable the foaming substance to produce foams. According to the foam production method disclosed by the invention, a mode thata gas generated from the liquidizing medium in situ is mixed with a foaming substance is adopted for a first time, because of a relatively large ratio of the volume of the gas generated from the liquidizing medium to the volume of the liquidizing medium, the volume of a container for storing the liquidizing medium can be greatly reduced, and a large-size air compressor or an air compressor set canbe replaced by small-size storage equipment. In addition, due to the adoption of the liquidizing medium joining in foaming, nitrogen can be released after the foams are broken and takes a combustioninhibition function into play on surfaces of combusted substances, so as to help to accelerate fire extinguishing.

The invention relates to an alternating-current controllable paralleling reactor comprising a transformer type main reactor and a step reactor. Wherein, the first coil is the main coil which connects the network directly; the second coil is the control coil outside which a break and a thyristor controller are mounted; the third coil is the compensating coil outside which a filtering compensating unit is mounted; and the transformer type main reactor and the second side-connect step reactor are both mounted in a fuel tank to form the body of controllable reactor. The alternating step controllable single-phase paralleling reactor comprises the body with high resistance, the breaker, the thyristor controller and the central controller, and it has the functions and characters which common reactors do not have, including: simply adjusting, rapid response time, non-harmonic-wave, lower noise, lower vibration, high reliability, lower consumption, and it can separate the harmonic wave to reduce the effect to electrified wire netting. The invention can be used in the electrified wire netting of extra-high voltage and long-distance power transmission.

A connective pneumatic conveyor comprises a feeding port; a buffer cabin is arranged below the feeding port; a connective conveying cabin body is arranged at the bottom of the buffer cabin; the buffer cabin and the connective conveying cabin body are arranged perpendicularly and communicate with each other; an accelerating gas spraying device is arranged at the gas inlet position of a channel of the connective conveying cabin body; an expanding and boosting section is arranged at the gas outlet position of the connective conveying cabin body; a loosening device is arranged in the connection position of the buffer cabin and the connective conveying cabin body, and crushed biomass and solid waste enter the buffer cabin through the feeding port and then are dispersed and enter the connective conveying cabin body under the action of a material deflector rod on the lower part of the buffer cabin; and the materials are carried under the action of high-speed gas flow at the accelerating nozzle outlet to enter the expanding and boosting section, and then are conveyed through a conveying pipeline to an existing large-sized boiler for blending combustion utilization. The connective pneumatic conveyor has the advantages of simple structure, wide conveying material adaptability, difficulty in bridging, large conveying quantity, convenience in arrangement, capability of continuously operating, convenience in disassembling, repair and maintenance, excellent operating environment and the like.

The invention discloses a radar-based bidirectional safeguard system and a radar-based bidirectional safeguard method for railway field operation. The radar-based bidirectional safeguard system comprises a radar module 1, a radar module 2, a high-velocity electronic diverter switch, a microprocessor, a liquid crystal display, a rotary switch, a relay, an acousto-optic alarm, a power supply and a voltage reduction module. The radar module 1 and the radar module 2 are used for respectively detecting moving targets within 1.5km on an up-going side and a down-going side of an operation point, and detection data are transmitted to the microprocessor through the high-velocity electronic diverter switch by the aid of an RS232 interface; the microprocessor is used for processing and analyzing the detection data from the radar module 1 and the radar module 2, displaying moving target information on the liquid crystal display and comparing the moving target information with a set initial threshold value. By the aid of the rotary switch, an alarming threshold value is set when equipment is started, and the moving target information can be inquired in a non-alarming state during operation of the equipment.

The invention relates to a construction method of an inclined cable tower construction structure system, which comprises the following steps of: 1) construction preparation; 2) arrangement of a combined support frame and a combined grid frame; 3) binding of cable tower steel bars; 4) installation of a tower cable guide pipe; 5) construction of a sliding moulding plate; 6) arrangement of a groutingguide pipe; and 7) concrete maintenance construction of the cable tower. The construction method of the inclined cable tower construction structure system has the advantages that arrangement efficiency of the combined support frame and the combined grid frame can be improved, integrity of the structure can be enhanced, and supporting quality of the sliding moulding plate can be effectively improved; positioning of the cable tower steel bars is accurate, connection is convenient, binding construction quality of longitudinal steel bars and transverse stirrups can be effectively improved, and on-site construction difficulty is reduced; and on-site arrangement of the concrete grouting guide pipe is convenient, an inclination angle of the grouting guide pipe can be dynamically adjusted according to an inclination condition of the cable tower, on-site positioning difficulty is reduced, and concrete pouring quality is improved.

The invention discloses a radar-based railway on-situ operation safety protection system and method. The system consists of a radar module, a microprocessor, a liquid crystal display screen, a knob switch, a relay, an acoustic-optic alarm, a power supply and a voltage dropping module, wherein the radar module is used for detecting a movable target within 1.5km at a protection side, and measurement data are transmitted to the microprocessor via an RS232 interface; the microprocessor processes and analyzes the measurement data, the information about the movable target is displayed on the liquid crystal display screen, the information about the movable target is successively compared with an initial set threshold value, if the information exceeds the threshold value, the relay is triggered to drive the acoustic-optic alarm to issue an alarm, and the operation personnel is reminded of withdrawing to a safety area; and by virtue of the knob switch, the alarming threshold value is set when the device is started, and the information about the movable target also can be inquired in the operation process of the device and when the device does not stay at an alarm state.

The invention provides a ventilation resistance synchronous measurement system and method, the ventilation resistance synchronous measurement system comprises a synchronous measurement terminal system and a plurality of synchronous measurement subsystems, the synchronous measurement terminal system is used for calculating ventilation resistance and sending an instruction to the synchronous measurement subsystems; comprising a central data processing module, a data display operation module, a multi-mode wireless communication module and a power supply support module, and a synchronous measurement subsystem which is installed in a roadway and used for detecting roadway ventilation data and transmitting the data to a synchronous measurement terminal system, comprising a data preprocessing module, a detection control sub-module, a subsystem power supply support module, a subsystem multi-mode wireless communication module and an environment detection module, the system controls each measurement subsystem through a terminal system, underground ventilation data is automatically collected and measured, and the ventilation resistance of a mine can be accurately and rapidly obtained.

The invention discloses a foam production method using liquid nitrogen and the application of the foam production method and a firefighting method. The foam production method comprises the following step: mixing liquid nitrogen with a foaming substance, so as to enable the foaming substance to produce foams. According to the foam production method disclosed by the invention, a mode that a gas generated from liquid nitrogen in situ is mixed with a foaming substance is adopted for a first time, because of a relatively large ratio of the volume of the gas generated from the liquid nitrogen to thevolume of the liquid nitrogen, the volume of a container for storing the liquid nitrogen can be greatly reduced, and a large-size air compressor or an air compressor set can be replaced by small-sizestorage equipment. In addition, due to the adoption of the liquid nitrogen joining in foaming, nitrogen can be released after the foams are broken and takes a combustion inhibition function into playon surfaces of combusted substances, so as to help to accelerate fire extinguishing.

The invention belongs to the technical field of conveying and feeding and particularly relates to a novel feeding device comprising a shell, inspection ports, a feeding inlet, spiral conveyors, abrasion resistant layers, a bridging prevention device, driving devices, pneumatic conveying pipes, spraying openings and air inlets. The inspection ports and the feeding inlet are formed in the shell; thespiral conveyors are arranged in the shell; the abrasion resistant layers are arranged in the positions, below the spiral conveyors, in the shell; the bridging prevention device is arranged on the feeding inlet; the driving devices are arranged at one end of the shell and connected with the spiral conveyors for providing power for the spiral conveyors; the pneumatic conveying pipes are arranged at the other end of the shell and connected with the spiral conveyors through adapting openings, and receiving openings of the pneumatic conveying pipes are connected with outlets of the spiral conveyors; the spraying openings are formed in the upper portions of the pneumatic conveying pipes; and the air inlets are connected to the upper portions of the spraying openings through flexible connectors. The novel feeding device has the advantages that the structure is simple, material conveying adaptability is wide, bridging is not liable to occur, the feeding amount is stable and controllable, continuous operation can be achieved, the conveying amount is large, arrangement is convenient, and the operation environment is excellent.

The invention provides a profile controlling and water plugging device for oil-containing sludge, belongs to the technical field of oil field production-related equipment, and solves the problems thata profile controlling and water plugging agent cannot be produced on site directly, and is low in production efficiency and inconvenient to move. The profile controlling and water plugging device forthe oil-containing sludge comprises a transporting vehicle and an overall machine seat; a waste liquid box is fixed to the lower end of the transporting vehicle; the overall machine seat is detachably fixed to the transporting vehicle; a material storage tank, a control cabinet, a liquid preparation tank, a plurality of first feeding boxes, a liquid storage tank, a plurality of second feeding boxes and a sludge raw material box are fixed to the upper end of the overall machine seat; the liquid storage tank is connected to the plurality of the second feeding boxes and the liquid preparation tank is connected to the plurality of the first feeding boxes through pipelines; a hot steam filter is fixed to each exhaust hole of the liquid preparation tank and the liquid storage tank; curved capillary tubes are arranged in the liquid storage tank; the lower end of the curved capillary tube extends out of the liquid storage tank and is connected with a back suction fan; and the curved capillarytube is connected to the two hot steam filters through pipelines. The profile controlling and water plugging device for the oil-containing sludge is convenient to move; the profile controlling and water plugging agent can be treated and prepared on site; the mixing is uniform; the heat is fully utilized; and the production efficiency is accelerated.

The invention discloses a double-backpressure turboset low-pressure through-flow and condenser selection design method. According to the method, thermodynamic design operating points of turbines are preset, the exhaust steam flow ratio of two low pressure cylinders is set, backpressure at the low pressure side is preset, and the exhaust steam volume flows of the low pressure cylinders at the low pressure side and the high pressure side are calculated according to the backpressure at the low pressure side; a preset value of the backpressure at the low pressure side is adjusted, and specifications of a last-stage blade with the minimum low pressure cylinder exhaust steam leaving-velocity loss are selected; the heat exchange area of condensers at the low pressure side and the high pressure side is calculated, and condenser specifications are selected according to the heat exchange area. Compared with the prior art, the method has the advantages that through non-equalization of mass flow of admission steam and exhaust steam of the two low pressure cylinders, the exhaust steam volume flows of the two low pressure cylinders are the same, and the exhaust steam leaving-velocity losses of the two low pressure cylinders are both minimum under the condition that the same last-stage blade is selected, that is, the sizes of steam exhaust ports of the low pressure cylinders are the same.

The invention discloses a foam generation method and its application in fire extinguishing and a fire extinguishing method, said foam generation method comprising mixing a gas with a foaming substance so as to cause the foaming substance to generate foam, at least part of said gas being generated instantaneously by a gas source, And the ratio of the gas volume that the gas source can generate to the volume of the gas source is not lower than 40. The foam production method of the present invention adopts the method of mixing the gas generated by the gas source in situ and the foaming substance for the first time. Since the volume ratio of the gas volume generated by the gas source to the gas source is relatively high, the stored gas can be greatly reduced. The volume of the container of the source, the small-volume storage equipment can replace the huge air compressor, air compressor unit or other high-pressure gas storage equipment. The present invention uses inert media such as liquid nitrogen to participate in foam foaming, and inert gases will be released after the foam bursts. These inert gases can also inhibit combustion on the surface of burning substances, and help to accelerate fire extinguishing.

The invention relates to a post-cast strip structure and a construction method. The construction method comprises the following steps: arranging an independent supporting body formed by a bottom column supporting plate and a back removal bottom column on the lower part of a back removal bottom mold and arranging a pouring platform column and a hoop side supporting beam on the back removal bottom mold to form a concrete pouring construction platform on a first-removal mold plate; arranging a flexible connecting bar between an upper folding plate and a lower folding plate and enhancing the transverse rigidity of a floorslab side mold through a reinforcing insertion plate; closing the upper part of a channel of the post-cast strip by a cap sealing coiled material and a coiled material rib plate, and closing two ends of the channel of the post-cast strip by a suspended supporting rod and an end closing body to close the post-cast strip at multiple angles; sliding a scraper blade cross beamand a rigid scraper blade along the upper surface of post-cast concrete; and arranging a steam pipeline on the lower surface of a steam curing bracket and a closed tarpaulin on the outer side to maintain the post-cast concrete with steam. The post-cast strip structure can improve the post-cast strip mold plate supporting quality and efficiency and the concrete pouring construction quality and efficiency and improve the stress performance of the construction structure and protect the construction environment.

The invention provides a profile control and water shutoff device for oily sludge, which belongs to the technical field of oil production related equipment and solves the problems that the profile control water shutoff agent cannot be directly produced on site, the production efficiency is low, and the movement is inconvenient. Including the transport vehicle and the complete machine base, the lower end of the transport vehicle is fixed with a waste liquid tank, the complete machine base is detachably fixed on the transport vehicle, and the upper end of the complete machine base is fixed with a material storage tank, a control cabinet, a liquid distribution tank, and several feeding boxes. , a liquid storage tank, several feeding tanks 2 and sludge raw material boxes, the liquid storage tank and several feeding tanks 2 and the liquid distribution tank and several feeding tanks 1 are connected by pipelines, and the vent holes of the liquid distribution tank and the storage tank are all fixed There is a hot steam filter, and a curved capillary is arranged inside the liquid storage tank. The lower end of the curved capillary extends out of the liquid storage tank and is connected with a back-suction fan, which is connected to the two hot-vapor filters through pipelines. The invention is easy to move, can be processed on site to prepare the profile control water blocking agent, mixes evenly, fully utilizes the heat, and speeds up the production efficiency.

The invention relates to a remote temperature monitoring system for a glass tempering furnace, which comprises a central processing unit, a plurality of field signal acquisition units and a pluralityof PID control units, wherein the central processing unit comprises an RS485CPU processor, and an upper computer PC / touch screen, a radio frequency transceiver module and a memory IC electrically connected with the RS485CPU processor; each field signal acquisition unit comprises a temperature sensor for acquiring temperature signals inside the furnace and a temperature detection processor; and each PID control unit comprises a PWM control module, a PID processor and a second memory IC. The production cost is low, the field layout is convenient, the power consumption is small, the data transmission is stable, the acquired data can be transmitted in a radio frequency mode, and receiving within 2000 meters is barrier-free; when the PID processing unit receives the temperature data, corresponding PWM control is carried out according to the temperature control data set by the upper computer, and precise fuzzy PID adjustment is thus realized; and balance and stability of several temperate zones in the glass tempering furnace can also be precisely controlled.

A filter pond blow-down pipe quick sand discharge device comprises a water inlet connection pipe, a flow guide pipe and a water outlet connection pipe which are connected with a blow-down pipe. A movable pipe connector and a filter screen assembly blocking filter materials are installed between the water inlet connection pipe and the flow guide pipe, and a valve and a matched flange fastener are disposed between the flow guide pipe and the water outlet connection pipe. The filter screen assembly is a double-layer stainless steel filter screen and internally provided with a double-layer 60-mesh stainless steel filter screen, and the material of the filter screen is adjusted according to treated water quality. The device is suitable for technical improvement of raw water and reclaimed water treatment of all existing power plants adopting common filter ponds, system operation does not need to be stopped during overhaul, and operation is convenient.

The invention provides a device and method for monitoring tree root infiltrating irrigation through three-dimensional resistivity, comprising a plurality of concentric annular electrode arrays, a plurality of radial electrode arrays are arranged in the circumferential direction of the annular electrode arrays, and the annular electrode arrays and the radial electrode arrays are connected with a parallel electrical method collector through a multi-core cable. The parallel electrical method collector is connected with an electrical method control and processing platform through wireless transmission equipment. According to the device and method for monitoring tree root infiltrating irrigation through the three-dimensional resistivity, the root irrigation effect can be improved.

The invention discloses a swirl dissolved air flotation sewage treatment equipment. The tank body is equipped with an inner tank with the same center line; the bottom of the tank body and the inner tank are respectively connected with the mud discharge pipeline, and the upper part of the tank body is provided with a slag collection dome; and the slag collection circle A slag discharge pipe is provided on the side wall of the tank that matches the lowest part of the top; an exhaust pipe is provided on the top of the tank; The main drainage port is connected to the inlet of the dissolved air pump, and the inlet of the dissolved air pump is also connected to the dissolved air source pipeline; the outlet of the dissolved air pump is connected to one end of the return pipeline; the other end of the return pipeline is connected to the The releaser at the fitting position of the canister is connected. The invention is applicable to the treatment of waste water in various industries, and has the characteristics of high treatment efficiency, low operating cost, simple structure, easy operation and maintenance, stable and good effluent quality, high process adaptability, and good economic and social benefits.

The invention relates to a device for collecting oil slick from drilling fluid in offshore drilling. The device comprises a drilling fluid pipeline, a centrifuge, a sedimentation tank, a connector, a connecting pipeline, a diaphragm pump, an oil-water separator, an oil catch tank and a drilling fluid storage tank. The inlet of the sedimentation tank is connected with the outlet of the drilling fluid centrifuge; the upper part of the sedimentation tank is connected with the connector; the outlet of the sedimentation tank is connected with the drilling fluid pipeline; the inlet of the diaphragm pump is connected with the connecting pipeline; the connector is installed at the tail end of the connecting pipeline; the connector is placed in the upper part of the sedimentation tank; the outlet of the diaphragm pump is connected with the oil-water separator through the connecting pipeline. The device has a simple structure, the on-site layout is convenient, coalescence media net in the oil-water separator can be reused after being removed and cleaned, the oil slick recovery device does not incur any expenses in use, except for the one-time invested purchasing expenses of the diaphragm pump, the connecting pipeline and the oil-water separator, and economic benefits can be achieved by the recovered oil.