203results about How to "Avoid unsafe hazards" patented technology

The invention relates to an anti-sloughing diluted filtration reducing agent for drilling fluid and a preparation method thereof. The filtration reducing agent is prepared from the following raw materials by weight portion: 80 to 120 portions of substance containing humic acid, 30 to 80 portions of sodium metabisulfite, 300 to 500 portions of water, 10 to 30 portions of ammonium hydrolyzed polyacrylonitrile, 2 to 15 portions of cross linking agent, 30 to 50 portions of potassium hydroxide, 5 to 20 portions of complexing agent, 1 to 10 portions of urea and 10 to 20 portions of organic silicone resin. The preparation method comprises the following steps: weighting the water, the potassium hydroxide, lignite or peat or weathered coal and the sodium metabisulfite by weight portion, adding the materials into a stirred autoclave, sealing the stirred autoclave, raising the temperature, performing reaction and reducing the temperature; adding the ammonium hydrolyzed polyacrylonitrile, the cross linking agent, the complexing agent, the urea and the organic silicone resin by weight portion into the stirred autoclave after the temperature reduction, sealing the stirred autoclave, raising the temperature and stirring for reaction; and discharging, and performing spray drying on a product to obtain a finished product. The anti-sloughing diluted filtration reducing agent has good comprehensive performance, can prevent slough of mineshafts and reduce the filtration loss and viscosity of slurry, and is easy to realize safe production.

The invention discloses a device and a method for collecting storage tank discharged gas. The device comprises more than one storage tanks A for storing a medium A, and more than one storage tanks B for storing a medium B; breather valves, emergent release valves, pressure transducers and cutting valves are respectively arranged at the tops of the storage tanks; the cutting valves of the storage tanks A are communicated with storage tank A gas phase pipes through storage tank A pipe fire stoppers; the other ends of the storage tank A gas phase pipes are respectively connected with one end of a storage tank A gas phase gathering pipe; the cutting valves of the storage tanks B are communicated with storage tank B gas phase pipes through storage tank B pipe fire stoppers; the other ends of all the storage tank B gas phase pipes are respectively connected with one end of a storage tank B gas phase gathering pipe; the other end of the storage tank A gas phase gathering pipe and the other end of the storage tank B gas phase gathering pipe are respectively connected with one end of a storage tank gas phase gathering pipe main pipe; and the other end of the storage tank gas phase gathering pipe main pipe is connected with a dirty oil collecting system. The device can reduce the loss caused by direct discharge of oil into the atmosphere, and reduces the probability of generating potential safety hazards by feeding a lot of air into the tanks.

The invention discloses a time-lag chaos iteration-based digital signature method and a time-lag chaos iteration-based digital signature device, and belongs to the technical field of communications. The process of generating a digital signature comprises the following steps: 1) performing ASCII encoding on a clear text and linearly quantizing a value domain; 2) performing one-dimensional time-lag chaos iteration; 3) performing a Hash functional transformation with a key; 4) encrypting, and the like. The process of authenticating the digital signature comprises the following steps: 5) performing the same step as the process of generating the digital signature on the received clear text and generating a Hash value; 6) decrypting the received digital signature (the Hash value); 7) authenticating, and the like. Due to the use of the sensitivity and the ergodicity of the time-lag chaos iteration, the clear-text information is modulated in the iteration track (process) of the time-lag chaos iteration, so that the generated Hash value has larger key space and higher safety. The time-lag chaos iteration-based digital signature method and the time-lag chaos iteration-based digital signature device are suitable for various secure transmission occasions of texts, video and audio files and the like which need the digital signature for verification, and have the characteristics of simple operation, high speed, irreversibility, anti-counterfeiting, strong attack and collision resistance, and the like.

The invention relates to a steam boiler. The electromagnetic steam boiler comprises a boiler body formed by heating pipes (1) and a steam chamber (2) and an electric control part, wherein the boiler body is arranged in a box-type structure body (3); heating coils (5) are arranged around the heating pipes (1); the front part of the box-type structure body (3) is provided with a control box (4); the electric control part is arranged in the control box (4); according to an electromagnetic heating principle, by adopting an electromagnetic heating mode, an electromagnetic heating electronic part is organically combined with the boiler body; and by utilizing the characteristics of high frequency and high power of a field effect tube, the working frequency of the heating coils is between 20 to 50 KHZ by adopting a trigger circuit. According to the electromagnetic steam boiler, a modern electronic technology is organically combined with traditional boiler functions; a single-chip microcomputer technology and a programmable automatic control technology are integrated in the production process of the boiler, so that energy is saved, and the environment is protected; the heat efficiency reaches above 95%; and the automation degree of the operation of the boiler is greatly improved.

The invention relates to the technical field of explosive initiating control, and in particular relates to an electronic detonator identification and delay time design method. For solving the problems of insecurity in use of an electronic detonator and low management efficiency in the prior art, the invention provides an electronic detonator identification design method. Electronic detonator ID number and delay time information are quickly, accurately and securely input to an electronic detonator initiating device by combining the conventional commodity bar code management technology, designing printing bar code information for codes of the electronic detonator ID number and the delay time and placing bar code lags at electronic detonator pin lines. The method is mainly applied in the field of electronic detonator ID number and delay time management in the technical field of explosive initiating control.

The invention discloses a double hydraulic cylinder synchronous control system comprising a direction control valve and two back pressure valves, wherein the direction control valve is used for controlling telescopic operations of two hydraulic cylinders; the two back pressure valves are respectively and fixedly arranged on the two hydraulic cylinders; the pilot opening pressure of one back pressure valve is larger than that of the other back pressure valve; during extension, oil charging branches and oil return branches of the two hydraulic cylinders are connected in parallel; during retraction, the oil charging branches of the two hydraulic cylinders are connected in parallel, the oil return branches of the two hydraulic cylinders are connected in series, and the series connection is formed from the back pressure valve with the small pilot opening pressure to the back pressure valve with the large pilot opening pressure. The double hydraulic synchronous control system disclosed by the invention can effectively control the manufacturing cost of the system based on guarantee of synchronous control precision; and hereby, the invention further provides an engineering machine applying the control system.

The invention provides a foundation pit support force real-time control system and method. The system comprises a hydraulic cylinder, a support seat, a locking block, an ejection rod, a crank, a supporting frame, a compression spring, a locking oil cylinder and a programmable logic controller (PLC) unit. The ejection rod is fixedly connected with one end of a piston rod of the hydraulic cylinder, a plurality of snapping teeth and guide grooves are formed in both the ejection rod and the locking block at intervals, and the locking oil cylinder drives the locking block to move through the crank to complete mechanical self-locking of the hydraulic cylinder. The action relationship between the hydraulic cylinder and the locking oil cylinder is coordinated through the PLC unit to complete the ejection and mechanical self-locking of the hydraulic cylinder. By means of the system and the method, resource consumption and potential safety hazards caused by manual operations can be prevented, and the foundation pit safe and orderly construction is further guaranteed.

The invention relates to a secure self-radiating LED lamp device, which comprises an external power connector, a lamp cup, a fan, an internal power converter, a radiator, an LED light source and a lampshade, wherein the external power connector, the lamp cup, the fan, the radiator, the internal power converter, the LED light source and the lampshade are connected together through connecting pieces to form a lamp device. The invention is characterized in that the radiator is arranged in an internal cavity at the junction of the lampshade and the lamp cup, wherein the internal cavity is isolated from a space arranged in the lower part of the lampshade and used for installing the LED light source; and a ventilation hole is arranged on the lamp cup. Since the radiator made of heat-conducting materials is arranged in the space in the lampshade, the potential safety hazards caused by the design of naked radiator are effectively avoided; since the ventilation hole is arranged on the lamp cup, the head generated during the light emission of the LED light source can be rapidly dissipated and the heat dissipation effect of the LED lamp device is greatly improved; and since the internal configuration of the radiator is reduced, the cost is reduced, the shape is reduced and the lamp device is close to the shape of the traditional bulb, technical support is provided to enable the shape of the lamp device to be close to the shape of the traditional bulb with specifications such as E14, E27 and the like, and conditions are created for the LED lamp device to be conveniently used in all kinds of illumination fields.

The invention discloses a method and a system for processing operation requests. The method includes that a terminal sends users' operation request information to a smart card after receiving user's operation requests; the smart card stores the operation request information and generates united passwords after receiving the operation request information outputted from the terminal, generates signature messages according to the operation request information and the united passwords after acquiring the united passwords, and then sends the signature messages to the terminal; after the terminal acquires the signature messages, the smart card outputs prompt messages of the united passwords if detecting disconnection with the terminal; and the terminal takes the acquired united passwords as to-be-verified passwords after receiving the united passwords corresponding to the prompt messages, notifies a verification device to verify the signature messages according to the to-be-verified passwords and the operation request information, and triggers procedures responding to the operation requests after the signature messages are verified by the verification device.

The invention provides an on-line-fault diagnostic analysis method for an extra-high-voltage-converter-station alternating current filter, and belongs to the field of alternating current filter faultanalysis. The problems that a present fault diagnosis method is high in randomness and limited in application range and is not capable of discovering faults in time are solved. The method includes thesteps that according to historical waveform data recorded by a fault recorder of an extra-high-voltage converter station, a RBF neural network is trained with the net drawing algorithm to determine model parameters of the RBF neural network, wherein the model parameters include the center, the weight and the width of the RBF neural network; according to the data recorded by the fault recorder ofthe extra-high-voltage converter station, present waveform data of the extra-high-voltage converter station is obtained, and the characteristic quantities of the present waveform data is extracted, wherein the extracted characteristic quantities include the time-domain characteristic quantity and the frequency-domain characteristic quantity; the extracted characteristic quantities are subjected tonormalization processing; the characteristic quantities after normalization processing are input into the trained RBF neural network, and whether the alternating current filter faults or not is diagnosed according to the output result of the trained RBF neural network.

This invention relates to a chemical luminous detector used in on-line monitoring/detecting pollutants in water samples including: a fluid transportation part, a chemical luminous monitor-detect part and a control part of a working control machine, in which, the reagent and a water sample to be tested enter into the screw channel of the chip of the flow cell of the detection part via their transporting parts then to be discharged from the outlet of waste solution after being mixed, the screw channel of the flow cell chip is opposite to the photosensitive window of a multiplier phototube and the original signals are connected with the input of the work control machine via a high resistance operation amplifier, a high frequency modem, a signal processor and a 16 A/D converter.

The invention relates to a heating furnace and a heating process thereof, in particular to the heating furnace adopting a regenerative burner and a conventional burner to perform combined heating, and the heating process thereof. The heating furnace structurally comprises a furnace body, and a feeding end wall and a discharging end wall which are arranged at the two ends of the furnace body respectively, wherein the furnace body between the feeding end wall and the discharging end wall is sequentially divided into a heat recovery section, a first heating section, a second heating section and a soaking section; partition walls are arranged between every two adjacent sections; and the furnace body is provided with the regenerative burner used for heating the furnace body, a flat flame burner and a flame adjustment burner. The heating process comprises the following steps of: starting igniting the heating furnace from the flame adjustment burner of the soaking section, and igniting the flat flame burner to switch the second heating section and the first heating section into a thermal storage state of the regenerative burner to finish the ignition heating work. The heating furnace of the invention effectively realizes energy saving, emission reduction and improvement in blank heating quality, greatly reduces spare part production and maintenance cost, and reduces the production cost.

The invention provides a data transmission method and a data transmission system. The data transmission method comprises the following steps that suite equipment receives transaction information sent by a terminal and sends the transaction information to intelligent password equipment; the intelligent password equipment extracts the key information of the transaction information, displays the key information, waits for user confirmation, receives a confirmation instruction and sends signature information to the suite equipment; the suite equipment sends the signature information to the terminal, wherein before receiving the confirmation instruction, the intelligent password equipment waits for selection of a password input mode, goes into a first password input mode which is selected, receives a password and validates the correctness of the input password. Therefore, a user can self-select the password input mode and can select different safety levels according to different conditions to input the password, so that the safety of password input is improved.

The invention relates to the technical field of tools, and in particular relates to a special-shaped seal element notch tool and a using method thereof. The special-shaped seal element notch tool comprises a working platform, wherein a base plate is fixed on the upper surface of the working platform; the bottom end of a vertical column is fixed on the base plate; an upper plate is fixed on the top end of the vertical column; a cylinder barrel of the air cylinder is fixed on the upper plate; a piston rod of the air cylinder penetrates through the upper plate and is connected with a cutter rest positioned above the upper plate; a cutter is arranged on the bottom of the cutter rest; the cutter is fixed on the cutter rest through a puller bolt; the air cylinder is connected with an electrical device; a protection cover is fixed on the lower surface of the upper plate and positioned on the annular outer side of the cutter; a to-be-notched special-shaped seal element is placed on a tyre mold; and the tyre mold is arranged on the base plate. The special-shaped seal element notch tool is simple in structure and convenient to install and operate, meets the using requirement of a special-shaped seal element notch, improves the production efficiency, and saves labor force.

The invention discloses a lifting-following device of a tower crane cable. The lifting-following device comprises a main plate, two U-shaped attaching plates and two insulation pulleys, wherein the two U-shaped attaching plates are fixed at the same side of the main plate, and the two U-shaped attaching plates are both buckled with the main plate and are symmetrically arranged and openings of the attaching plates are basically horizontal; installing parts of the insulation pulleys are arranged between the U-shaped attaching plates and the main plate, inclined, opposite and coincident slideways are arranged on the main plate of each installing part and on the board, which is opposite to the main plate, of each U-shaped attaching plate, and the slideways are symmetrically arranged in a reverse V shape; insulation pulleys are arranged in the slideways through pulley shafts, and a space formed between the two pulleys is utilized as a cable channel; and the two sides of the lower end of the main plate are both provided with long-shaped screw rod holes, the two sides of the rear of the main plate are respectively provided with U-shaped bolt hoops, and a horizontal butt strap is arranged between the two U-shaped bolt hoops. The lifting-following device provided by the invention can fix the tower crane cable so that a cable can upward move along the rise of the tower crane, a cable is prevented from being damaged in a lifting process, the lifting efficiency of tower crane equipment is improved, and the lifting-following device is safe and beautiful.

The invention discloses a mobile hard disk password module, and relates to the field of data security. The mobile hard disk password module comprises a USB3.0 interface main control chip, an authentication algorithm chip, an FPGA and a PATA-to-SATA bridge sheet, wherein the USB3.0 interface main control chip is suitable for being connected with a USB interface, and communicates with both the authentication algorithm chip and the FPGA; the FPGA communicates with the PATA-to-SATA bridge sheet; and the PATA-to-SATA bridge sheet is suitable for being connected with storage equipment. The authentication algorithm chip realizes identity authentication; after authentication, user data are encrypted and decrypted through the FPGA, and finally the PATA-to-SATA bridge sheet is used for writing or reading data into or out of storage equipment. The mobile hard disk password module can effectively prevent the data in a storage system from being stolen, tampered or damaged by personnel concerned, so that the completeness and the security of the user data can be guaranteed.

A suspension-type active joint and passive joint mixed traditional Chinese medicine massage robot adopts a passive joint five-degree-of-freedom space movement mechanism capable of being released and locked quickly, positions a multi-way combined massage head at a body massage part under the manual intervention of massage doctors, is simple in structure and lower in cost and overcomes potential safety hazards caused by gravity. The pneumatically-driven active-joint multi-way combined massage head is adopted, the massage force is controlled according to atmospheric pressure, and the massage force is soft, safe and reliable. The suspension-type active joint and passive joint mixed traditional Chinese medicine massage robot is suitable for being used by massage doctors in medical institutions, personal clinics, nursing homes, rehabilitation centers, welfare institutions and other organizations.

The invention discloses a method for producing methanol by methane bioconversion. In the method, methylosinus trichosporium is used as biocatalyst, methanol containing gas and oxygen-containing gas are introduced into solution containing the methylosinus trichosporium and phosphate through a breathable film to react so as to prepare high-concentration methanol solution. The method realizes methanol production by methane bioconversion by using the high-concentration phosphate as methanol dehydrogenase inhibitor to inhibit further oxidation of the methane, realizes high-concentration methanol production by using high cell concentration methylosinus trichosporium as the biocatalyst, avoids unsafe hidden danger possibly generated by mixing of the methane and oxygen in a bubbleless film aeration mode, and reinforces the gas-liquid mass transfer process of the methane and the oxygen. By adopting the method, high concentration methanol solution can be safely and effectively produced, so the invention provides a reliable technology for industrialization of methanol production by methane bioconversion.

The invention discloses a coal gas long-distance ignition method and its equipment. It belongs to coal gas burning technology field, especially for long-distance ignition technology field. The method sets the portfire at more than one meter to the way out of burner, put coal gas and burning air into the portfire, burns the mixing gas with high voltage electric spark, sends the kindling to the way out of the burner, and burns the mixing goal gas. The portfire is a sealed long canister cavity, its front end is connected to coal gas pipe, and goal gas inputting port, ignition air pipe, high voltage ignition are arrayed along the kindling direction. The ignition method of the invention can burn mixing goal gas at long-distance burner high temperature, it avoids high temperature burning loss of ignition equipment and according insecurity hidden trouble. The invention has simple designing structure, long usage period; because of the long-distance burner, it can be changed expediently, and the work of burner can not be influenced.

A voltage-lowering liquid resistance of high-voltage AC electromotor with circular cooling system. The characteristic is: it includes the shell, at least three separated electric liquid boxes in the shell, the conductive liquid in the boxes, the electrode pair in the conductive liquid, and the reinforcing cooling system composed of the circular pump, the tube channel, the heat exchanger and the cooling medium, the input and output of the tube channel connect the electric liquid box; one pole of the electrode pair links to the high-voltage power end of the controlled device through the electrode arm, set insulation layer between the circular cooling system and the shell. This invention is applied to the startup or voltage adjustment of mouse cage and high-voltage AC generator.

The invention provides a remote distributed type informatization agriculture plant protection management system and method. The remote distributed type informatization agriculture plant protection management system is formed by an all-area management and control center, sub area management and control stations, a center control platform and an operation platform. A plant protection operation function terminal is formed by the center control platform and the operation platform, the all-area management and control center is used for sending generated task instructions to each sub area management and control station and receiving data transmitted by the sub area management and control stations so as to generate an all-area agriculture plant protection operation database and a plant protection information database, each sub area management and control station is used for monitoring operation states of the plant protection operation function terminal in real time, evaluating and conducting data collection on the plant protection effect of the plant protection operation function terminal, and transmitting data to the all-area management and control center, and the plant protection operation function terminal completes relevant plant protection operations according to task instructions transmitted by the sub area management and control stations. According to the remote distributed type informatization agriculture plant protection management system and method, intensification operation and management of a wide-area distributed type agriculture plant protection service are achieved, using cost of a peasant household is reduced, meanwhile, overall cost of an area agriculture plant protection service is reduced, and the plant protection effect is improved.