39results about How to "Ensure safety and control" patented technology

The invention discloses a sealing device between a floating disc and a tank wall of an external floating roof tank. The device comprises an edge plate of a floating disc and the tank wall, wherein a primary sealing part and a secondary sealing part are arranged between the edge plate of the floating disc and the tank wall, and oil and gas spaces are formed among the primary sealing part, the edge plate of the floating disc, the secondary sealing part and the tank wall; the secondary sealing part comprises a secondary sealing rubber gasket, a secondary sealing pressing plate and a secondary sealing membrane, and the secondary sealing membrane is arranged on the surface of the inner side of the secondary sealing pressing plate; filling devices are arranged in the oil and gas spaces, and the filling devices comprise flexible wear-resisting bag belts and bag belt fillers; the flexible wear-resisting bag belts sequentially expend along the edge plate of the floating disc, the upper surface of the primary sealing part, and the tank wall, cavity bodies without oil or gas are formed between the flexible wear-resisting bag belts and the secondary sealing membrane, the bag belt fillers are positioned in the flexible wear-resisting bag belts, the reduction of the oil and gas space between the primary sealing part and the secondary sealing part is facilitated, the oil and gas content in the oil and gas space is reduced, and the harm caused by the blast accident of sealing rings is furthest reduced.

The invention provides a safe and reliable distributed cloud storage method, comprising the steps as follows: step S1, using a key to encrypt or transform original data; step S2, splitting the key and encrypted ciphertext to obtain key data blocks and file ciphertext data blocks, wherein the number of the key data blocks is greater than that of the file ciphertext data blocks; and step S3, assembling the key data blocks and the file ciphertext data blocks into data blocks in a one-to-one mode and storing the data blocks in a cloud server, and storing the remaining key data blocks at a user side, wherein the steps S1, S2 and S3 are implemented at the user side. According to the invention, on one hand, large-capacity low-cost storage of the cloud server can be utilized fully, and on the other hand, a small part of but very important data is held at the user side, safety control over cloud data is ensured, and drawbacks such as uncontrolled data leak caused by the fact that the data security depends entirely on the cloud server are avoided.

The invention discloses a stamping module for a stamp control device. The stamping module comprises a stamp box. The stamp box comprises a stamp shell, and an upper cover box and a stamp are arranged in the stamp shell. The stamp comprises a stamp handle and a stamp base. The upper surface of the upper cover box is fixedly connected with an opening in the upper surface of the stamp shell. The upper surface and the lower surface of the upper cover box are respectively provided with a central hole. A boss-shaped hand shank at the upper end of the stamp handle is arranged below the central hole in the upper surface of the upper cover box, and the lower end of the stamp handle penetrates through the central hole in the lower surface of the upper cover box and is connected with the stamp base. The diameter of the central hole in the upper surface of the upper cover box is smaller than that of the hand shank, and the diameter of the central hole in the lower surface of the upper cover box corresponds to that of the stamp handle. The position, between the boss-shaped hand shank and the lower surface of the upper cover box, of the stamp handle is further sleeved with a spring. The stamping module guarantees that safety of the stamp is controllable, and the risk caused by poor management of the stamp is reduced.

The invention relates to the technical field of data storage, in particular to a method for deeply erasing an FLASH file online. The method comprises the following steps of adding a FLASH independent partition and a deep erasure function for the independent partition to a linux kernel, and adding an independent partition deep erasure application to an application space; re-compiling the linux kernel and performing updating to an embedded target board; after a linux system is started up, automatically mounting the added FLASH independent partition; and when file data needs to be erased, uninstalling the mounting of the independent partition by a system user, calling the independent partition deep erasure application to realize deep erasure of the file data of the independent partition, and re-mounting the independent partition to a file system directory by the system user, thereby obtaining the independent partition without any file. According to the method, the deep erasure function can take effect only when being called, so that normal use of other partitions of the system is not influenced, the operation is convenient, the file data in the whole independent partition can be deeply erased, and the risk of file data leakage is avoided.

The invention discloses a tundish roasting protection system, which comprises a roaster, a tundish arranged under the roaster, and a PLC controller. The roaster includes a burner, a gas branch pipe and an air branch pipe. There are multiple burners, which are arranged at intervals along the length of the tundish; the burners are equipped with electronic igniters and flame detectors, and the burners are connected to gas branch pipes; gas flow detectors, gas A cut-off valve and a gas flow regulating valve; the burner is connected to the air branch pipe; an air flow detector, an air stop valve and an air flow regulating valve are arranged on the air branch pipe; each detector, each valve and the electronic igniter are respectively Connect with PLC controller. The beneficial effects of the present invention are: the protection system can be used for protection in the two modes of inspection mode and baking mode, effectively ensuring the safety and control of each working state in the tundish baking area.

The invention provides a method for hoisting reinforcement cages of underground diaphragm walls in height-limited areas, which belongs to the field of underground diaphragm wall construction, and includes construction preparation procedures, hoisting procedures, synchronously advancing and lowering reinforcement cage procedures, and welding procedures for openings of reinforcement cages; hoisting procedures It includes the following steps: S31, three cranes are hoisted synchronously until the steel cage is lifted horizontally between 1.5 and 2.0m, the two main cranes continue to lift synchronously, and the auxiliary crane lowers the hook; S32, until the steel cage is completely straightened and After the weight of the steel cage is borne by the two main cranes, the hooks of the auxiliary crane are released; the existing hoisting method solves the problem of many times of hoisting, welding and lengthening, time-consuming, labor-intensive, cost-increased and poor integrity of the steel cage Problems such as the prolongation of the installation time of the reinforcement cage and the increase of the exposure time of the groove wall are too long, and the phenomenon of collapse of the groove wall, mud inclusion in the cage body, excessive sediment, etc. is easy to occur, which is unfavorable to the control of the construction quality of the underground diaphragm wall.

The invention discloses an intelligent electronic lock system with an ultrahigh frequency radio frequency identification function as well as unlocking and locking methods of the intelligent electronic lock system, wherein the intelligent electronic lock system comprises an intelligent electronic lock and a background system, wherein the intelligent electronic lock comprises a mechanical lock, a micro motor, a microcontroller, an electronic tag and a battery, the background system comprises a reader-writer and a background computer, the background computer reads a memory area of the electronic tag through the reader-writer, the state of the mechanical lock is determined, and in addition, a control command is written into the memory area of the electronic tag; the microcontroller obtains the control command from the memory area of the electronic tag, the on-off state of the electronic lock is detected, the micro motor is driven to take locking and unlocking actions according to the control command, and in addition, the state information of the electronic lock is written into the memory area of the electronic tag. The system solves the problems that the disposable electronic lead seal cannot be repeatedly used in logistics industry in the prior art, and the operation cost is higher.

The invention discloses a deslagging device of a ferromolybdenum smelting furnace. The device comprises a slag tap formed in the side wall of the lower portion of the ferromolybdenum smelting furnace, the slag tap is communicated with a deslagging chute, the lower portion of an opening in the upper portion of the deslagging chute is closed, inserting plates used for separating the deslagging chute into a plurality of sections are arranged in the deslagging chute and are movably inserted in the deslagging chute, and the slag tap and the lower portion of the deslagging chute are both filled with silica sand. The invention further discloses a deslagging method using the deslagging device. Through the structural improvement, the silica sand is adopted to serve as a blockage and obstruction material, an effective isolation layer can be formed, heat energy losses are reduced, the burning damage of a high-temperature melt to the deslagging chute is prevented, safety in the smelting process and the deslagging process is ensured, consumption of fireproof materials of the traditional technology is fully reduced, the deslagging operation is quite convenient, the labor intensity is low, and the device is simple, easy to implement, safe and reliable.

The invention provides a software-defined centralized multicast control method, the steps of which are: S1: the multicast control center constructs a multicast centralized control architecture composed of three-level servers; S2: the multicast control center opens a group for legal multicast sources S3: The multicast control center determines the legal multicast members; S4: The multicast control center forms a multicast link database; S5: The multicast control center bases the Database, plan multicast path; S6: Multicast control center initiates multicast route delivery; S7: Multicast source forwards multicast data in user subnet, so that designated multicast receivers can receive multicast data; S8: End. The present invention performs global planning of multicast routing based on a software-defined manner, realizes self-defined multicast tasks in a network in which identification and routing are separated through a multicast routing centralized control mechanism, and ensures the safety and controllability of multicast data.