89results about How to "Long-term effective operation" patented technology

The invention discloses an alternate combined wetland system and a method for efficiently removing nitrogen and phosphorus in urban wastewater, belonging to the field of wastewater treatment. The system comprises a water taking system which is characterized by sequentially distributing four artificial wetland structural units of vertical composite flow, surface flow, underflow and an ecological pond. The water taking system enables the urban wastewater to uniformly flow into the artificial wetland of vertical composite flow; the entering domestic wastewater is uniformly distributed in a shape like the Chinese character 'wang(surname)', the discharged water enters the front end of the wetland structural unit of surface flow, the back end collects the water from the surfaces of perforated pipes, and then, the water is discharged out of the system; the discharged water uniformly flows into the artificial wetland unit of underflow from water inlet square holes through a water distributing tank; and then, after the wastewater flows into a water collecting tank, the wastewater is conveyed to the ecological pond. The system of the invention enables the cumulative mean removing rates of COD, TN, ammonia nitrogen and TP to respectively reach about 55.6%, 84.0%, 76.7% and 84.4%. The system improves the quality of the aquatic environment and the aquatic ecological environment, beautifies the landscape, and has good environmental economic benefit.

The invention provides a dual camera monitoring and control system. The system includes a high sensitivity monochrome camera with enhanced infrared response, an array of infrared illuminators for zero ambient light monitoring, and a color camera that does not require enhancement in the infrared spectrum. The system also includes ambient light intensity perception, video signal exchange technology and energy conversion circuits. The system combines optimal monochrome imaging in low-light or no-light conditions with optimal color tinted imaging in high ambient light conditions, both for high-quality image clarity. The dual-camera feature of the system is evident to the user due to the integrated automated control of the system, which also reduces energy consumption, thus making the system suitable for wireless, remote, self-sufficient systems that operate from surrounding The environment gains energy.

Cold water alkalescent water-quality treatment and treating system for dual-water internal cooling generator are disclosed. By-pass water treating system is installed on cold water main circulation circuit in dual-water internal cooling generator, hardness, copper, iron, corrosive product and granular purity are trapped in by-pass system utilizing cationic exchanger, cold water conductivity is controlled by EDI unit to improve pH value and regulate alkalescence. It has better internal cold water treating ability and can inhibit corrosion.

The invention discloses a method for slow released regulating and controlling internal cooling type of water microcirculation in large electrical generator as well as monitoring system. When PH value of internal cooling water in circulation system and electric conductivity are less than a certain value, the inlet and outlet valves of small mixing bed are started, making part of internal cooling water pass through a bypass circulation system go along a microcirculation. Thus alkaline matter in microscale slow released is carried in certain range. When PH value of internal cooling water in circulation system and electric conductivity reach a certain value, the inlet and outlet valves are closed. When said values are in certain value, the drainage valve and water compensation valve of demineralized water is opened till electric conductivity of internal cooling water is less than a certain value. The alkaline matter includes negative type of resin and positve type of resin. The monitoring system is composed of water quality monitor and control system, bypass circulation processing control system and water compensation pollution discharge controlling system. The invention can effectively prevent water quality of internal cooling water from deterioration, restrain copper conductor from corrupt. It can be used in large type of generator group in thermal power stations, nuclear powre station and hydroelectric power station.

A MnO2-TiO2 carbon nanotube-porous inorganic ceramic membrane low-temperature catalytic denitrification self-cleaning material and its preparation method belong to the field of low-temperature catalytic denitrification. A porous inorganic ceramic membrane is used as a carrier; a compound of MnO2, TiO2 and carbon nanotube is loaded on the surface of the carrier so as to obtain a catalyst; and a fluorocarbon resin material is loaded on the surface of the catalyst, wherein the mass percents of the fluorocarbon resin material and the catalyst itself are respectively 30% and 70%; in the catalyst, the mass percent of the porous inorganic ceramic membrane is 50-80%, and the mass percent of the compound of MnO2, TiO2 and graphene is 20-50%. As coal ash in a thermal power plant is used as a raw material and charcoal is used as a foaming agent to prepare the porous inorganic ceramic membrane, the price is low; as the porous inorganic ceramic membrane has a porous structure and large specific surface area, more active centers can be provided for catalytic reaction; the carbon nanotube has large specific surface area, high chemical inertness and tunnel conductivity of large delocalized pi bond, catalytic performance of the material at low temperature can be raised; and the fluorocarbon resin compound on the surface of the catalyst has a self-cleaning function.

The invention discloses a double-path connection M2M (machine-to-machine) system, which comprises an M2M terminal, an M2M platform and an application system, wherein the M2M terminal is respectively connected with the M2M platform and the application system, and the two paths of connection are based on different protocols; one path of connection realizes the data interaction between the M2M terminal and the M2M platform, and then the M2M platform and the application system establish a data transmission channel through the internet; and the other path of connection realizes the direct data interaction between the M2M terminal and the application system. The invention also discloses a double-path connection M2M terminal and a connection method thereof. The M2M system and the terminal disclosed by the invention have the characteristics of double paths of connection, the reliability of wireless communication is enhanced, and redundance backup and timely updating of acquired information are realized; and offline reconnection measures ensure connection online to the maximum extent, and the occurrence of a terminal incontrollable state is reduced.

The invention relates to a high-temperature resistance plastics centrifugal pump, which comprises a pump body, an impeller, a pump cover, a motor, a thermostability mechanical seal component and other attached components, wherein the thermostability mechanical seal component is composed of a static ring, a moving ring, a spring seat, a static ring gland, a cooling water jacket and an acid-blocking piece; the spring seat is fixed on an impeller shaft; the outer surface of the spring seat is directly taken as a seal rotating shaft; the spring seat is provided with a spring and an O-shaped seal ring which is used for separating corrosive medium from metal pieces; the cooling water jacket is provided with a cooling water nozzle and a framework oil seal; the framework is matched with the spring seat to form the cooling water seal; the pump body, impeller and pump cover form a flow passage component of the pump, are respectively made of thermostability corrosion-resisting plastic through compression molding and comprise all-plastic and pump cover structure forms. The pump has the characteristics of being reasonable and compact in structure, reliable to mount and use, can avoid the influence on the precision of mechanical sealing by the deformation of plastics due to heating, greatly prolong the service life, can resist high temperature and effectively operate in strong corrosion environment for a long time and the like.

The invention relates to the field of cable maintenance, in particular to a line repair device. The line repair device includes a repair shell; a line connector is arranged in the repair shell; the line connector includes a middle connecting piece and two lock nuts; the two lock nuts are connected to both ends of the middle connecting piece in a threaded manner; each lock nut is provided with a tapered elastic sleeve; the entrance of a wire insertion hole is a corresponding tapered expansion structure; the upper surface of the repair shell is provided with a glue injection hole, and the liquidrepair glue can be injected into the repair shell through the glue injection hole; and the repair glue and repair shell together form a line repair insulation layer after the repair glue solidifies.The beneficial effects of the line repair device are as follows: the wire connection at the cable connection location is firm and reliable, and has a large current flow area; and the repair shell andthe solidified repair glue together form the repair insulation layer at the cable connection location; therefore, the water and moisture resistance is good, the strength is high and not easy to break,the cable can run effectively for a long time after connecting, and the service life of the cable is prolonged.

The invention provides an on-line pretreatment device of a chromatographic gas sample, and the device is mainly used for on-line pretreatment of gas samples of an ethylene cracking furnace. The pretreatment device is a box structure, and is mounted between an outlet of an online analysis sampler of the ethylene cracking furnace and an on-line chromatogram. The on-line pretreatment device is mainly composed of a buffer sedimentation tank, a visual liquid-discharge tank, a gas filter, a pressure regulating valve, a cleaning transfer valve, a steam system and insulating parts. Inner surfaces of the connecting pipelines use ultramicro nanostructures with a low surface tension. The chromatographic gas sample can be treated to remove water, solid impurities and heavy hydrocarbon droplets, and outputted to the on-line chromatogram with a stable flow.

The invention provides an electrochemical water treatment device which comprises a reaction device, a tangential water inlet formed in the side wall of the upper portion of the reaction device, a water outlet formed in the lower end of the bottom, a drain outlet formed in the side wall of the bottom, a primary coarse filtration screen arranged at the top of the center of the inside of the reaction device, an anode arranged below the primary coarse filtration screen, a secondary fine filtration screen, a cathode, a power supply and a vent valve. The invention further provides a method utilizing the device to treat water. Compared with the prior art, the synergic coupling effect of all processes is achieved within the same reaction device by adopting an ingenious process concept, so that the processes are complementary and are promoted mutually to overcome the shortcomings existing when the processes respectively play the effects, the treatment effect is remarkably improved, the energy consumption is reduced, a reactor structure is optimized, and the occupied area is reduced. The method utilizing the device to treat water is simple in process, high in treating efficiency and capable of performing effective, economical, environmentally friendly and integrated water treatment through hydraulic cyclone separation, two-stage filter screen based filtration and electrochemical oxidation and reduction.

The invention relates to a sewage source heat pump system, consisting of a compressor, a condenser, an evaporator, a reversing valve and an expansion valve; wherein, the condenser or the evaporator is designed into a sewage source heat exchanger; the sewage source heat exchanger comprises a sleeve and a heat exchange tube which penetrates the sleeve, a connector joint and a screw cover are arranged between the two ends of the sleeve and the heat exchange tube, and the inlet and the outlet interfaces of a heating medium are opened on the pipe wall of the sleeve; the two ends of the heat exchange tube extending out of the sleeve are provided with a three-way joint and an end cover, and a sewage inlet interface and a sewage outlet interface are arranged along the radial direction of the three-way joint; the heat exchange tube is internally provided with a pitch type chain axle cleaner. In addition, the system is additionally provided with an auxiliary evaporator of the compressor, a filter purifying device and a dosing device. The condenser or the evaporator of the invention adopts the sewage source heat exchanger with the same structure, therefore, the system can run effectively for a long time and the service life of the sewage source heat pump system is prolonged; the added auxiliary evaporator can ensure the system to work normally under overheating or overcooling environmental temperature.

The invention discloses underground pipe drainage equipment capable of treating water-logging and stain, and belongs to the technical field of water conservancy projects. The equipment comprises a water-logging removing device and a stain reducing pipe; the water-logging removing device comprises a drainage unit, a flow guide pipe, a water outlet unit and a water storage device; the drainage unitcomprises a plurality of drainage pieces and a drainage cylinder; the drainage pieces comprise first drainage pieces and second drainage pieces; a first water inlet is formed in each first drainage piece; each second drainage piece is a drainage piece of an impermeable structure; the second drainage pieces are positioned at the top end and the bottom end of the drainage cylinder; the first drainage pieces are positioned between the second drainage pieces; second water inlets are formed in the positions, in the drainage cylinder, between every two of the first drainage pieces; the second waterinlets are communicated with the flow guide pipe; the flow guide pipe is communicated with the water outlet unit, the water storage device and the stain reducing pipe in sequence. According to the underground pipe drainage equipment capable of treating water-logging and stain, sundries in water-logging water on the ground is isolated from the drainage cylinder through the second drainage pieces; the sundries in the water-logging water are prevented from blocking the stain reducing pipe after entering the stain reducing pipe by the first drainage pieces. The work efficiency is improved, and long-term effective operation of the equipment is ensured.

The invention relates to a heat supply system for an electric heating organic heat carrier, mainly comprising six parts i.e. electric heating equipment, a circulating pump, an expansion slot, a heat conducting oil filter, a heat conducting oil closed circuit pipeline system and an electric control system; the heat carrier is based on heat conducting oil, the heated heat conducting oil carries heat energy to be transferred to heat consuming equipment after being heated, and the effect of releasing the heat energy to heat the heat consuming equipment is achieved by fully heat contact of the heat conducting oil with the heat consuming equipment; and the heat conducting oil after releasing the heat energy can return to the electric heating equipment to be reheated.

The invention provides an efficient treatment, recycling and zero emission method and system for shale gas flowback fluid. The method comprises coagulating sedimentation, catalytic ozonation, an MBR method, reverse osmosis, membrane distillation, a mechanical vapor recompression (MVR) evaporator, sludge dehydration, and safe landfill or resource utilization. The system comprises a primary treatment unit, a secondary treatment unit, an advanced treatment unit, a concentrated solution treatment unit, a sludge treatment unit and an automatic control unit. All the units are arranged in one or morecontainers to form the modular and movable skid-mounted device. By means of the process, suspended solids, colloids, organic matter, salt ions and other pollutants in the shale gas flowback fluid canbe efficiently removed, the effluent quality can meet reinjection, emission and various reuse standards, and meanwhile zero emission of the whole system is achieved. The system is free of environmental pollution, capable of effectively operating for a long time, easy to maintain, small in occupied area, flexible and convenient to use, and the skid-mounted device is quite suitable for treating shale gas flowback fluid.

The invention provides a tandem type mechanical seal for a high-temperature high-pressure multistage pump. The tandem type mechanical seal comprises a primary sealing assembly, a secondary sealing assembly and a tertiary sealing assembly, wherein the primary sealing assembly and the tertiary sealing assembly are of contact type mechanical sealing structures; the secondary sealing assembly comprises a second movable ring and a second fixed ring; the second movable ring is mounted on a pump shaft; the second fixed ring is mounted on a sealing housing; a second spring is axially arranged betweenthe non-sealing surface of the second fixed ring and the sealing housing; the second spring presses the second fixed ring and the second movable ring; a groove which is distributed in the radial direction is formed in the sealing ring of the second movable ring; and the groove communicates with a first ring-shaped space. Three groups of mechanical seals are adopted, wherein contact type mechanicalseals are adopted at the two sides and non-contact type mechanical seal is adopted in the middle, so that the service life is prolonged and leakage loss is reduced.

The invention relates to the technical field of air purification, in particular to a VOCs exhaust gas purification system. The system includes VOCs waste gas purification equipment and an oxidant circulation tank; the main body of the VOCs waste gas purification equipment is a tank body, the upper part of the tank body is provided with an air outlet and an oxidant inlet, and the lower part of the tank body is provided with an air inlet and a water outlet The oxidant inlet is connected to the spray plate inside the tank body; the tank body is also provided with a support tray, and the support tray is arranged above the air inlet; the liquid outlet of the oxidant circulation tank is connected to the The oxidant inlet is connected. The equipment can be used for VOCs waste gas purification treatment, and has the advantages of low operating cost and no need for regeneration and repeated replacement.

The invention relates to the cable maintenance field and especially relates to line repair equipment. The equipment comprises a repair shell. A line connector is arranged in the repair shell. The lineconnector includes a middle connection component and two lock nuts. The two lock nuts are connected to two ends of the middle connection component in a threaded connection mode. A tapered elastic sleeve is arranged in each lock nut. An inlet of a plug wire hole is a corresponding tapered expansion structure. The equipment has advantages that lead connection at a connection portion of a cable is firm and reliable and an over-current area is large; the repair shell covers an outer portion of a cable connection portion and is taken as a repair insulation layer so that a water-proof and moisture-proof property is good, strength is high and the equipment is not easy to be damaged; and the cable can effectively operate for a long time after being connected, and a service life of the cable is prolonged.