48results about How to "Ensure safe use" patented technology

The invention provides a method for extracting phycobiliprotein from spirulina. The method comprises the following steps: adding water into spirulina mud to obtain a spirulina cell suspension, performing ultrasonic treatment to obtain spirulina lysate, centrifuging the lysate and taking the lysate, sequentially filtering through filter membranes which are respectively 0.8mu m and 0.45mu m, to obtain phycocyanin crude extracting liquid, then sequentially ultrafiltrating the crude extracting liquid through an ultrafiltration membranes with molecular weight cut-off of 300KD and 100KD, collecting a filtrate of the molecular section, and performing freezing and drying to the filtrate to obtain phycobiliprotein powder. According to the method, the defect of using chemical reagent to extract phycobiliprotein in the prior art is overcome, no residuals exist in the preparation, and the environment pollution does not exist. The extraction rate of the phycobiliprotein is greater than 80%, the content of phycobiliprotein is more than 60%, and the purity of the phycobiliprotein is more than 1.5. The overall technological process is safe and reliable, fast and efficient. Compared with the traditional method, by using the method, the content of the phycobiliprotein is high before using of chromatography, the phycobiliprotein with the purity not only can meet the requirement of food and cosmetic industries, but also can be applied to aspects of medical and health products, and the like.

The invention relates to an urban gas pipe robot adapting to pipe shape change. The urban gas pipe robot mainly consists of a power leather bowl, a spring coupling, a frame, tension springs, slide blocks, support connecting rods, driven wheels, support arms, a mileage wheel, a steering engine system, a gear set, an extension system, an extension rod, a guide wheel frame, a rotating shaft, an extension spring, a guide wheel base, a guide wheel, a control system, a battery set, a motor, a steering engine control panel, a potentiometer and a motor gear set. The power leather bowl is connected with the spring coupling; the spring coupling is connected with the frame; the tension springs and the slide blocks are connected with the frame; the support connecting rods are connected with the support arms; the steering engine control panel is mounted in the steering engine system; the motor is connected with the potentiometer through the motor gear set; the steering engine system is connected with the extension rod through the gear set; the guide wheel base is fixed with the rotating shaft; and the battery set and the control system are mounted in the frame. The urban gas pipe robot is simple in structure, safe and reliable, and can be reliably operated in an urban gas pipe with a complex structure.

The invention relates to an explosion-proof pressure container technique for automobile, especially a very high pressure explosion-proof air reservoir which has an inner container and a shell. An air-intake interface is tightly provided on the cylinder of the inner container. A release interface is tightly provided on the other end. The inner container is made of ultra-thin stainless steel and the shell made of nylon carbon fiber is wound on the surface of the inner container in a reciprocating dislocation way. The shell surface is provided with a protective layer coated with the nylon resin. The inner container is supported by the ultra-thin stainless steel. When explosion-proof pressure container cooperates with the air power generation device to work, stored high pressure air exceeds the bearing pressure, the inner container and the shell are simultaneously tore and the air in the container dashes out so that the air reservoir is deformed withnot explosion flying articles and the safety is ensured.

The invention provides an information preprocessing method based on a blockchain system, and the method comprises the steps: extracting a cellphone number corresponding to a query request after the query request for querying a home subscriber server list is received; judging whether the mobile phone number handles a number portability service or not; determining an operator corresponding to the mobile phone number; and sending a home subscriber server list of an operator corresponding to the mobile phone number to a terminal corresponding to the mobile phone number. The invention further provides an application method of the one-number multi-card service based on the block chain system, an industrial information department server, a terminal and a block chain network system. By performinginformation preprocessing on the application information of the one-number multi-card service, the service handling efficiency of the one-number multi-card user carrying the number to the network canbe improved.

The invention discloses a buffer structure for a machine head of a knitting machine. The buffer structure for the machine head of the knitting machine comprises a buffer head and one or more levels of buffer base sleeves, wherein the outer end of the buffer head corresponds to the machine head, the other end of the buffer head is connected with a first-level buffer spring which is arranged in an inner cavity formed in one end of the first-level buffer base sleeve, the other end of the first-level buffer base sleeve is connected with a second-level buffer spring which is arranged in an inner cavity formed in one end of the second-level buffer base sleeve, the buffer base sleeves are connected in sequence, and the last buffer base sleeve is fixed to a machine tool body. The buffer structure for the machine head of the knitting machine is simple and compact in structure, the effect of multi-level sequential buffering is good, the machine head is effectively buffered, and use safety and the service life of the machine head are ensured.

The invention relates to a multifunctional hoisting bisecting stage act curtain towing mechanism comprising a support body, a motor, a speed reducer and a towing wheel. The motor and the speed reducer are fixedly mounted on the support body, and the motor drives the towing wheel to rotate by the speed reducer; an output shaft of the speed reducer is horizontally arranged, and the vertical towing wheel is rotatably mounted on the output shaft; a driven fluted disc clutched by gaining electrons and another driven fluted disc clutched by losing electrons are respectively coaxially fixedly mounted at both sides of the towing wheel, a driving fluted disc clutched by gaining electrons and the output shaft of the speed reducer are fixedly mounted, and a driving fluted disc clutched by losing electrons and a chain wheel which is rotatably mounted at the output shaft end are fixedly mounted. The invention has the advantages of compact structure and smart design, can be mounted at one end of an act curtain guide rail support, not only saves stage floor area, but also can simultaneously take effect along with a hoisting mechanism to realize the variety of the towing mechanism, can realize the automatic and manual control functions, the automatic tightening function of wire ropes and the high-precision position signal collection and control functions, thereby being the stage act curtain towing mechanism with higher novelty.

The present invention relates to a combination and matching method, system and device of a battery pack with different capacities and a storage medium. The method comprises the steps of: obtaining battery capacities of a plurality of batteries to be combined and matched for classification; obtaining a charge-discharge curve of batteries to be combined and matched belonging to the same class; rejecting the batteries to be combined and matched which do not meet preset conditions according to the charge-discharge curve; performing aging test for the rest of the batteries to be combined and matched belonging to the same class, detecting the internal resistance change rates of the batteries to be combined and matched belonging to the same class before and after aging, and selecting the target number of the batteries from the rest of the batteries to be combined and assembled belonging to the same class as final combination and matching according to the internal resistance change rates. Thecombination and matching method, system and device of the battery pack with different capacities and the storage medium greatly optimize the combination and matching mode of batteries, maintain the consistency of parameters of the batteries belonging to the same class as possible, avoid that the poor parameters of a separated battery influence the practicability and the safety of the life of the whole battery pack, greatly improve the service life of the battery pack and ensure the whole performances of the battery pack.

A self-cooling self-help photovoltaic charging pile comprises a charging shell and a cooling circulating device. A display screen and a closed door are arranged on one side of the charging shell. An intelligent lock, an intelligent lock control device, an authentication device, a paying device, a billing device, a plurality of electric energy meters and a charging device are arranged in the charging shell. The display screen is connected with the authentication device, the paying device, the billing device and the electric energy meters. The intelligent lock is connected with the closed door and the intelligent lock control device. The intelligent lock control device is connected with the authentication device and the paying device. The paying device is connected with the billing device. The billing device is connected with the electric energy meters. The output end of each electric energy meter is connected with the charging device. The self-cooling self-help photovoltaic charging pile can effectively resist water, solar autonomous power generation efficiency is high, charge is reasonable, the intelligent degree is high, internal electronic elements can be effectively cooled, the cost is low, consumed energy is little, and the service life is long.

The invention relates to a dual-channel heat transmission heat exchanger with a rectangular heating pipe and a manufacturing process of the dual-channel heat transmission heat exchanger. The heat exchanger comprises outer heat supply pipes the longitudinal sections of which are rectangular, wherein the outer end of each outer heat supply pipe is plugged through an end socket closure plate; a notch is correspondingly arranged on the pipe walls of the same ends of the two adjacent heat supply outer pipes, another notch is arranged on the other same ends of the next adjacent outer heat supply pipes are correspondingly, and the outer heat supply pipes are communicated through the notches; the outer heat supply pipes are internally provided with tap water heat absorption pipes which are communicated through tap water communicating pipes, and the tap water communicating pipes pass through the notches; and inner heat supply pipes are arranged in the tap water heat absorption pipes, and the inner heat supply pipes are communicated with a cavity body of the outer heat supply pipes. According to the heat exchanger and the manufacturing process, the effective heat energy is utilized fully, a double-pipe cold fluid wall of at the center of a pipe cavity is heated, the heat-transfer area is increased, heat fluid and cold fluid are heated in a circulating manner by three channels, and the heat transfer efficiency is improved. A stainless steel thin wall pipe, a plate manufacture punching, stretching and flanging are adopted; the thin wall stainless steel welding difficulty is reduced due to the embedding type, the side pinched, so that the welding is easy, and acid is filled in an inner channel for cleaning scale generated in the inner channel.

The invention relates to a combined generating device with multiple wind driven generators, comprising a pole and multiple horizontal axis wind driven generators (1). The device is characterized in that the pole comprises an upper pole (2) and a lower pole (3); the upper pole is coaxially installed at the top end of the lower pole and can rotate around own axis relative to the lower pole; the multiple horizontal axis wind driven generators are arranged at the same side of the upper pole at intervals along the height direction; and tail wings (4) are arranged at the other side of the upper pole, corresponding to the horizontal axis wind driven generators. The device has the following advantages: when the wind blows the tail wings, the tail wings drive the whole upper pole to rotate, thus ensuring the impeller of each horizontal axis wind driven generator to be vertical to the wind direction and effectively improving the working efficiency of each horizontal axis wind driven generator, at the same time, multiple horizontal axis wind driven generators are adopted, therefore, even if each horizontal axis wind driven generator has low power, the horizontal axis wind driven generators combined in parallel can generate power with high power, and the low-power horizontal axis wind driven generator can be started under the condition of lower wind speed.

The invention provides a high-altitude cabin and exhaust diffuser connecting and positioning structure and high-altitude simulation test equipment, and belongs to the technical field of aero-engine high-altitude simulation test equipment.The high-altitude cabin and exhaust diffuser connecting and positioning structure specifically comprises a center positioning movable part, a flexible part and a water supply part, and the water supply part is of a cylindrical structure and is located between a high-altitude cabin and an exhaust diffuser; the central positioning movable part and the flexible part are positioned on the periphery of the water supply part; the center positioning component comprises a sliding block and a sliding groove which are in relative sliding connection, the sliding block is connected with the inner wall of the high-altitude cabin, and the sliding groove is connected with an outer barrel, close to one end of the high-altitude cabin, of the water supply component. The flexible part is arranged on the outer barrel of the water supply part in a sleeving mode and located on the rear side of the center positioning component in the gas inlet direction, and the front end of the flexible part is connected with a port of the high-altitude cabin. Through the treatment scheme, the gas flow field uniformity and connection stability of the high altitude cabin and the exhaust diffuser are improved, and the use performance of equipment is effectively guaranteed.

The invention relates to a cylindrical lithium battery cap. The cylindrical lithium battery cap is characterized by comprising an outer seal ring, an upper cover, an explosion-proof diaphragm and a pore plate, wherein a round bump structure protrudes downwards in a central region of the explosion-proof diaphragm; the section of the bent part of the circumferential bump of the round bump structure is in an S shape; a circle of annular pressure relief notch groove is formed in the bottom surface of the explosion-proof diaphragm in the round bump structure; and the S-shaped bent part of the round bump structure is supported on the seal ring or the pore plate.

The invention relates to an electric kettle with a modified temperature control device. The electric kettle comprises a kettle body, a heater and the temperature control device connected with the heater through a circuit. The electric kettle is characterized in that the temperature control device comprises a temperature sensor mounted in a kettle steam area, a thermostat connected with the heater, a power switch member and a mechanical transmission whereby the thermostat and the power switch are connected; the power switch member comprises a switch key connected with the mechanical transmission and a power switch connected with the switch key and the thermostat; an airtight seal structure preventing steam from entering the power switch or/and the thermostat is further disposed between the temperature sensor and the power switch member or thermostat. In this way, during using, the steam can be prevented by the airtight seal structure from entering electronic components of the power switch member and the thermostat thereof from a steam switch, and sensitivity and application safety of the electronic components of the temperature control device are ensured; no steam water flows out of the bottom of the kettle, so that the kettle is clean to use.

The invention discloses an antirust agent for autoclaved aerated concrete plate reinforcements and a preparation method of the antirust agent. The antirust agent is characterized by being prepared from the following components of 20 to 30 parts of latex, 7 to 8 parts of quartz sand, 4 to 5 parts of mixing solution, 1 to 2 parts of lime, 0.5 to 1 part of iron oxide red and 2 to 3 parts of water. The prepared antirust agent for the autoclaved aerated concrete plate reinforcements has the advantages that the requirements of GB15762-2008 are met, the high temperature-resistant property and the acid and alkaline-resistant property are realized, and the poisonless and environment-friendly properties are realized; the antirust agent cannot generate chemical reaction even if the antirust agent is in contact with cement, lime, silica sand and the like for a long time, so that the reinforcements subjected to antirust treatment cannot easily get rusty, and the service life and use safety of autoclaved aerated concrete plates can be well guaranteed.

The invention relates to a fluorescent lamp which comprise at least one supporter, a lamp holder body, a lamp holder, a ballast assembly arranged inside each supporter, two power lines each is eclectically connected with the circuit board of the ballast assembly at one end, and at least one electromagnetic wave-shielding layer arranged on the line segment beside the ballast assembly in the two power lines. The invention also relates to a power line used with the fluorescent lamp, which comprise at least one electricity-conducting wire consisting of a copper core, an inner insulating layer and an outer insulating layer, and at least one electromagnetic wave-shielding layer arranged on the electricity-conducting wire. Since the segment of power line beside the ballast assembly inside the fluorescent lamp is provided with at least one electromagnetic wave-shielding layer and the power line used with the fluorescent lamp is provided with at least one electromagnetic wave-shielding layer, the invention can ensure the fluorescent lamp to work normally and meet the national quality and safety standards, and also has the advantages of simple structure, easy fabrication and low production cost.

The invention discloses a sports skateboard having a positioning function. The sports skateboard comprises a board body, display screens, pulleys, shock absorbing plates, connecting blocks, shaft sleeves and power generating devices, illumination lamps are arranged at two ends of the board body, the number of the display screens is two, the display screens are respectively arranged at two sides ofthe upper end of the board body, a storage battery is arranged below every display screen, the shock absorbing plates are connected with the lower end of the board body, the pulleys are connected with the shaft sleeves through wheel shafts, the shaft sleeves are connected with the shock absorbing plates through the connecting blocks, the power generating devices are arranged in the shaft sleeves,the power generating devices are respectively electrically connected with the storage batteries, the display screens and the illumination lamps, the storage batteries are respectively electrically connected with the illumination lamps and the display screens, a GPRS positioning module and a wireless module are arranged in every display screen, and the display screens are connected with a user's mobile phone through the wireless modules.

The invention discloses a single-side manual locking device of a dual-column lifting machine. The dual-column lifting machine comprises a pair of stand columns, sliding tables arranged in the stand columns, jacking oil cylinders arranged in the sliding tables, and oil pumps communicating with the jacking oil cylinders. The single-side manual locking device is characterized by comprising locking devices arranged between the stand columns and the corresponding sliding tables; each locking device comprises a lock rod arranged on the corresponding stand column, and a lock block arranged at the position, beside the lock rod, of the corresponding stand column, each sliding table is provided with a lock protrusion matched with the corresponding lock block, and a jacking rod is arranged on one side of each lock rod; a left connecting column is arranged on the lock rod on the left side, a lock rod guide wheel is arranged at the position, above the lock rod on the left side, of the correspondingstand column, a right connecting column is arranged on the lock rod on the right side, a steel wire rope is sequentially connected among the right connecting column, the lock rod guide wheel and theleft connecting column, an operation rod is arranged on the lock rod on the right side, a handle is arranged on the stand column on the right side, and a lock hook matched with the operation rod is arranged at the end portion of one end of the handle. The number of parts is reduced, mounting and maintaining are facilitated, operation is easy, and production cost is reduced on the premise of ensuring action reliability and use safety.

The invention discloses a self-heat preserving fireproof brick, comprising a supporting block body and further comprising a protective block body, wherein the protective block body is in clamped connection with the supporting block body through a connection structure, and the clamped connection part between the protective block body and the supporting block body is provided with a heat preserving layer. By using the self-heat preserving fireproof brick facilitating industrial batch production, the construction for outer wall body and heat preserving layer can be completed at a time in the process of building houses, and the self-heat preserving fireproof brick has superior heat preserving effect, facilitates construction, guarantees the safety and the service life of houses and buildings, and further avoids hidden fire hazard.

The invention discloses an energy storage type starter of an automatic aerosol extinguishing device and belongs to the technical field of extinguishing devices. The problem that an existing starter is overlarge in instantaneous start power is solved. The energy storage type starter comprises a working power supply, an inverter circuit, a rectifying circuit, a current limiting circuit, an energy storage capacitor, a discharging device, a detection controller, a load heating resistor and a load detection device. The working power supply is connected with an overvoltage control relay switch through the inverter circuit, the rectifying circuit and the current limiting circuit. The other end of the overvoltage control relay switch is applied to the positive electrode of the energy storage capacitor through a start control relay switch and a discharging control switch. The discharging device and the energy storage capacitor are arranged in parallel and connected to the discharging control switch. The load heating resistor is connected to the start control relay switch. The load detection device is connected to the start control relay switch. According to the energy storage type starter, the running power consumption is low, energy is saved, all the elements are common, the circuit is simple, the cost is low, and the reliability is high.

The invention relates to a Gaussian detection probe, and belongs to the technical field of magnetic detection. The probe comprises a vertical driving device, a mounting plate which is driven by the vertical driving device to vertically slide and lift, and a plurality of detection assemblies which are arranged below the mounting plate in a surrounding manner. Each detection assembly comprises a lowermost detection plate capable of horizontally sliding in a reciprocating mode, the length direction of the detection plate is consistent with the horizontal sliding direction of the detection plate,the horizontal sliding directions of all the detection plates intersect at one point, and the bottom faces of all the detection plates are located on the same horizontal plane. The Gaussian detectionprobe provided by the invention is provided with a plurality of detection plates, so that a plurality of magnets can be detected at the same time, the detection efficiency is improved, and the detection cost is reduced.

The invention relates to a rear-mounted rigid wall-connecting device which is characterized in that an angle bar is welded with a steel tube, the two sides of an angle bar area welded with the round steel tube are respectively provided with a round hole, the insides of the two round holes are respectively provided with an expansion bolt, the small head of each expansion bolt passes through each round hole of the angle bar and is arranged inside the angle bar, and the tail part of the large head of each expansion bolt is sleeved with an open tube and is arranged outside the angle bar. Each expansion bolt is beaten into concrete and then firmly screwed, and the tail part of the large head of each expansion bolt is driven to the inside of the open tube so as to expand the tube and then fix each bolt as well as the angle bar on the ground or walls. The rear-mounted rigid wall-connecting device provided by the invention is firm and reliable in structure, easy to operate, and larger in stiffness and endurance. By using the rear-mounted rigid wall-connecting device, a frame body and a constructional engineering structure can be connected effectively, thereby ensuring the overall stability and utilization safety of the frame body.

The invention relates to the field of BMS devices and discloses a BMS device for a low-speed electric vehicle. A lithium-ion battery of the low-speed electric vehicle is managed, and the reliability of the battery is improved. The device comprises a signal adoption module and a management control module, and the communication of the signal adoption module with the management control module is conducted by an I2C; the signal adoption module comprises a current sampling unit, a voltage sampling unit, a temperature sampling unit, a driving circuit, a balance circuit and a signal processing and storage unit; the management control module comprises a clock unit, a register, a storage unit, a communication unit, a display unit and an MCU. The BMS device is suitable for the low-speed electric vehicle.

The invention relates to a power system mobile terminal security threat assessment method comprising: (1) analyzing a security threat to a power terminal and generating a threat list; (2) establishinga power terminal threat set according to the generated threat list; (3) determining threat consequence attributes and weights corresponding to the threat consequence attributes; (4) collecting historical information data on threat events and determining the probability of threats; (5) building a threat index model; and (6) according to the threat index model, determining the security threats. Themethod is favorable for improving the overall protection ability of a business system and the guarantee capability of the security protection ability, and meets the protection requirement of the business system.

The invention discloses a storage battery installing protection jacket, and relates to a storage battery protection device. The storage battery installing protection jacket mainly aims to solve the problems that when storage batteries are installed and used, dangers exist because the storage batteries inevitably collide and potential safety and accident hazards exist because gaps do not exist between the batteries and the batteries are poor in heat dissipation effect. The storage battery installing protection jacket is a rectangular box cover matched with the appearance of the batteries; grooves and protruding edges are alternatively arranged on the outer sides of four sides of the protection jacket; clamping grooves are formed in the connection positions of the grooves and the protruding edges; the groove on the outer lateral side of a long side of the protection jacket and the protruding edge on the lateral side of the other long side of the protection jacket are symmetrically arranged; the groove on the outer lateral side of a short side of the protection jacket and the protruding edge on the outer lateral side of the other short edge of the protection jacket are symmetrically arranged. When being used, the storage battery installing protection jacket is arranged on the top and the bottom of the batteries in a sleeved mode, and the batteries are connected through the clamping grooves in the protection jacket, and are accordingly prevented from mutually colliding in the installing and using process; certain gaps can be reserved between the batteries through the protection jacket, and therefore the batteries are good in heat dissipation effect.

The present invention relates to an optical module encryption method and device. The encryption method includes the steps of: obtaining an identifier of an optical module, where the identifier is unique to the optical module; and performing encryption operation on the identifier to generate a password of the optical module; and saving the password inside the optical module. The invention providesa password for each optical module, and the password is unique and unique to the optical module, so that the use security of the optical module can be effectively ensured.

The invention relates to the technical field of ultrasonic flaw detection methods and in particular to an ultrasonic flaw detection method for fatigue cracks on the inner surface of an eccentric long hole. The method comprises the following steps: manufacturing a manual test block, detecting the upper half circumference of the manual test block, and detecting the lower half circumference of the manual test block. The ultrasonic flaw detection method is simple and reasonable to operate, convenient and rapid to use, reliable in flaw detection result and easy to use and popularize, the difficulty in flaw detection on fatigue cracks on the inner surface of the eccentric long hole is alleviated, the flaw detection efficiency is high, and the quality and the use security of a workpiece with the eccentric long hole are ensured.

The invention provides an anti-splashing oil-water collection device of a cooking pressure cooker. The anti-splashing oil-water collection device comprises a cylinder cover (2) located on a cooker lid, and a collecting groove (3) is arranged on the lower portion of the cylinder cover (2). The collecting groove (3) is composed of the cylinder cover (2), an outer ring wall (30) and a groove bottom (32). A drainage sleeve disk (4) located below a valve bonnet (11) is arranged on the inner circumference of the cylinder cover (2) and is composed of a disk bottom (41) and an inclined wall (42), the inclined wall (42) and the disk bottom (41) form a whole, the inclined wall (42) cocks up obliquely, a side ring (44) is arranged on the peripheral side of the inclined wall (42), a bottom shoulder (45) is arranged at the lower end of the side ring (44), a blocking groove (46) is jointly defined by the bottom shoulder (45), the cylinder cover (2) and the side ring (44) in an enclosing mode, a plurality of overflow groove holes (21) are formed in the cylinder cover (2), and oil and water intercepted by the blocking groove (46) flow into the collecting groove (3) through the overflow groove holes (21). On the premise that safe use of the pressure cooker is not affected, the anti-splashing oil-water collection device has the anti-splashing function, the oil-water collecting function and the noise lowering function and can facilitate the cooking use of the pressure cooker.

The invention discloses a railway signal cable grounding system, which comprises a railway signal cable, a through ground wire and surge protection devices, wherein the number of the surge protection devices is equal to the number of segments of the railway signal cable; and one end of a cable metal outer sheath of each segment of cable of the railway signal cable is directly connected with the through ground wire and the other end of the cable metal outer sheath is connected with the through ground wire through one surge protection device. Under the power frequency condition, the minimum traction current passes through one end of each cable metal outer sheath since the corresponding surge protection device is in a high-impedance near open-circuit mode state, and can be neglected, so that the risk of burnout of the cable is avoided. Under the lightning transient condition, one end, which is not connected with the through ground wire, of each cable metal outer sheath is connected with the through ground wire through the corresponding surge protection device, the potential of each cable metal outer sheath at the end can be reduced to below protection voltage of the corresponding surge protection device, and the cable and equipment are not damaged by the protection voltage, so that safe application of the cable and the equipment in a lightning environment is ensured.

The invention discloses a dike allowing easy passage. The dike dam comprises a dike body and a reinforcing wall, wherein the dike body is trapezoid, the reinforcing wall is laid on the side of the dike close to the water surface, and the thickness of the reinforcing wall is at least 20cm. The reinforcing wall is formed by hampering enclosure wall bricks and bar-shaped stones, or directly laid by concrete materials. A plurality of trampling pavements facilitating passing are arranged on the reinforcing wall at 10-20m intervals and formed by dike enclosing bricks. Corresponding trampling bosses are arranged above the outer side surface of the dike enclosing bricks. The dike enclosing bricks are laid into trampling pavements, and the trampling bosses are laid in step shape. People can pass smoothly on the slope of the dike as needed. The problem that a steep slope of the dike is hard to walk on can be solved.

The invention relates to a method for preparing emulsified fuel oil, which comprises the following steps: 1) adding methanol or ethanol into oleic acid or fatty acid, and stirring for forming an acid phase; 2) adding the methanol or the ethanol into ammonia, and stirring for forming a base phase; 3) adding the base phase into the acid phase while stirring for preparing an emulsifier; and 4) adding clean water into petrochemical finished oil, firstly stirring till milk white, then adding the emulsifier, stirring till that liquid is transparent and clear, standing and then filtering, thereby preparing the emulsified fuel oil. The method can also add a diluent, a modifier, a protective agent and the like according to needs. The emulsified fuel oil has the advantages of simple production technology, extensive resources of raw materials, cheap price, high product stability and good intersolubility with the petrochemical finished oil.