56results about How to "Realize automatic isolation" patented technology

The invention relates to a dynamically-reconfigurable battery energy storage system and method. The system comprises an energy storage system main circuit and a battery management system. The energy storage system main circuit has a charging and discharging interface circuit and an energy storage battery pack connected with the charging and discharging interface circuit. The energy storage battery pack is formed by connecting a plurality of single batteries in parallel. Each single battery is provided with a controllable switch Sn(n=1, 2,..., n) at the two ends thereof. In the energy storage battery pack formed by connecting the plurality of single batteries in parallel, the positive electrode end of each single battery is connected with the positive electrode end of an adjacent single battery through a controllable switch S'n (n = 1, 2,..., n), and the negative electrode end of each single battery is connected with the negative electrode end of the adjacent single battery through a controllable switch S "n (n = 1, 2,..., n). The battery management system is connected with the energy storage system main circuit, and is used for generating an energy storage battery pack reconfiguration decision according to electrical information of the single batteries and a power switching instruction, and controlling connection or disconnection of the controllable switch Sn, the controllable switch S'n and the controllable switch S"n to change topology of the energy storage battery pack.

An intracavity dilator is characterized by mainly comprising a metal mesh (1) with a polymer coating and a support structure (2); the metal mesh (1) can be optionally deformed to a required shape sustainable, by folding or bending, and can be restored to the original shape; one end of the support structure (2) is connected with the metal mesh (1); the other end of the support structure (2) is fixed to a hook plate of a surgical retractor, a main frame of the surgical retractor or an operating bed; the support structure (2) is capable of supporting the metal mesh (1) to resist a thrust which displaces the metal mesh and which is produced by isolating tissues. The intracavity dilator is simple in structure, low in cost and convenient to manufacture and use and is capable of protecting soft tissues and organs and providing a good view during surgery.

The invention belongs to the technical field of nuclear security equipment and control and relates to an automatically isolated security injection tank which comprises a security injection tank, an outlet nozzle, a floating ball, an isolation plug and a guide rod, wherein the outlet nozzle is arranged below the security injection tank, is connected with the security injection tank and is used forejecting a coolant in the security injection tank; the guide rod is vertically arranged inside the security injection tank, is connected with the outlet nozzle and is used for guiding the floating ball and the isolation plug to move up and down; the floating ball floats on the liquid level of the coolant in the security injection tank and can be moved up and down along with increase/decrease of the liquid level of the coolant in the security injection tank; the isolation plug is suspended below the floating ball and can be dropped into the outlet nozzle to plug a coolant outlet of the securityinjection tank when the security injection tank is emptied or is approximately emptied. By adopting the automatically isolated security injection tank provided by the invention, automatic isolation of the security injection tank can be achieved according to demands before the security injection tank is emptied, and the consequence that security injection functions are failed because of mal-operation can be avoided.

The invention discloses a bridge maintenance device, which comprises a power feed frame and a power feed column composed of an attachment part and a power feed end. There is an ejecting chute inside, inside the ejecting chute there is a first screw rod extended left and right, the left end of the first screw is connected with the first power unit, and the right end of the first screw is connected with the right inner The ends are rotated and connected, and the first screw rod is provided with a joint ejector block for joint connection. On the right end surface of the joint ejector block below the first screw rod, there is an ejector rod extended to the right, and the tail on the right side of the ejector rod There is a beveled surface at the edge, a first sliding chamber is provided in the end of the power inlet, and the bottom of the first sliding chamber is provided with a bottom groove; the structure of the invention is simple, and it can realize automatic power feeding, and It can automatically control the exposure and concealment of the power-in connection, which improves work efficiency and safety.

The invention discloses a hand drying device. The device comprises a base, a spinning part and an assembly part, wherein an inner spiral grained empty groove is formed inside the base close to the left side, and sliding grooves are correspondingly formed in upper and lower inner walls of the inner spiral grained empty groove, close to the right side; a beveling groove is formed in one side, away from the inner spiral grained empty groove, of each sliding groove; a sliding rod is arranged in each sliding groove and is connected with a sliding block in a sliding fit manner, each sliding block and the corresponding sliding groove are in sliding fit, a first elastic part is wound outside each sliding rod on the right side of the corresponding sliding block, one side, close to the inner spiral grained empty groove, of the sliding block runs into the inner spiral grained empty groove; a first hole slot is formed in each sliding block in a penetrating manner, and a first square groove is formed in the middle end inside each first hole slot; and a first flange part is arranged in each first square groove in a sliding manner, and a stop dog is connected in each first hole slot in a sliding manner. The hand drying device has the advantages of simple structure, convenience in assembly and high stability, has an electric shock protection function, and can be used for improving the safety during maintenance.

The invention provides a DC voltage transformation subunit and a DC transformer comprising the DC voltage transformation subunit. The DC voltage transformation subunit comprises a fault isolation voltage equalization module and a DC/DC converter, wherein a high-voltage side of the fault isolation voltage equalization module is connected with a high-voltage direct-current bus, a low-voltage side ofthe DC/DC converter is connected with a low-voltage DC bus, the mass and the occupied area are small, cost is low, a DC transformer of the DC voltage transformation subunit comprises a plurality of DC voltage transformation subunits. The DC voltage transformation subunit is advantaged in that high-voltage sides of a plurality of DC voltage transformation subunits are connected in series, withstand voltage class requirements are met, low-voltage sides of the multiple DC voltage transformation subunits are connected in parallel, the high-power requirement is met, the number of layers of the DCvoltage transformation subunits is greatly reduced, the occupied area is reduced, cost is saved, different application scenes of one-way power flowing and two-way power flowing can be met, and automatic isolation and crossing of faults on the high-voltage side can be achieved.

The invention discloses a safe indication plate device which comprises a base, a connecting rod piece and an indication plate part, wherein an internal thread groove is formed in the left side of the base; sliding grooves are symmetrically formed in the upper inner wall and the lower inner wall of the right side of the internal thread groove; an inclined hole is arranged on one side of each of the sliding grooves, which is far away from the internal thread groove; a guide rod is arranged in each of the sliding grooves; a sliding block is connected onto each of the guide rods in a sliding and matching manner; the sliding blocks are matched with the sliding grooves in a sliding manner; a first compression spring is arranged on the outer side of the guide rod on the right side of each of the sliding blocks in an encircling manner; one side of each of the sliding blocks, which is near the internal thread groove, penetrates into the internal thread groove; a first penetrating hole is formed in each of the sliding blocks from top to bottom in a penetrating manner; a first placement groove is formed in the center in each of the first penetrating holes; a first pressing block is arranged in each of the first placement grooves in a sliding manner; and a spacing block is connected in each of the first penetrating holes in a sliding manner. The safe indication plate device is simple in structure, convenient in assembly and high in stability and has an anti-electric shock function, and the safety is improved.

The invention discloses an intelligent fuse. The intelligent fuse comprises a shell, lower three-phase line terminals, upper three-phase line terminals, a power switch, a display screen, an alarm light, a relay alarm speaker, and a control module, the lower three-phase line terminals are arranged at the lower part of the shell, the upper three-phase line terminals are arranged at the upper part of the shell, the power switch, the display screen, and the alarm light are arranged on the front surface of the shell, the power switch is arranged on the middle position of the shell, the relay alarm speaker is arranged at the right side of the shell, a control unit is fixedly arranged in the shell, and the lower three-phase line terminals of the fuse are connected with the intelligent control module. According to the intelligent fuse, the structure is simple, the usage is convenient, the intervention with a communication unit is prevented, the fuse and a power supply can be automatically separated, and the intelligent fuse can be widely applicable to various fusing circuits.

The invention relates to a battery management system based on a wireless multi-agent, and belongs to the field of lithium ion battery management systems. The system comprises a middle computer, a sub-battery manager and a battery pack, the middle computer comprises a display module, a first wireless communication module and a database; the middle computer issues a corresponding control instructionaccording to the information fed back by the sub-battery managers; the sub-battery manager comprises an MCU, a collector, a second wireless communication module, a control unit and a Flash memory; the battery pack is formed by sequentially connecting single batteries in series. The problems that in an existing battery management system, temperature measurement is inaccurate, automatic protectioncannot be achieved, unhealthy single batteries cannot be recognized and positioned, the unhealthy batteries cannot be effectively isolated, adaptability is poor, wiring is complex, and circuits are aged are solved. Effective, perfect and reliable protection of the lithium ion battery is realized, the maintainability of the battery pack is improved, the safety of the battery pack is ensured, the service life of the battery is prolonged, and the use cost in the battery life cycle is reduced.

The invention discloses a physical hard disk management method under a distributed storage system. An OSD is created through a distributed storage management platform, and positioning information suchas OSD ID and OSD cluster identification of OSD equipment in a distributed storage system and logic information of a logic volume group and a physical volume group of an LVM are written into a physical hard disk through logs of the LVM; the method further comprises the following steps: monitoring a UDEV event of hardware equipment in a kernel; obtaining a disk pulling event or a disk inserting event; obtaining an ESN, a hard disk WWN and a hard disk drive character for pulling out or inserting the physical hard disk; and finding the OSD ID and the OSD cluster identifier of the OSD equipment in the corresponding distributed storage system, and then modifying the operation state of the OSD equipment in the distributed storage cluster through the OSD ID and the OSD cluster identifier of theOSD equipment. According to the invention, the state update of the OSD equipment of the distributed storage system can be triggered in real time by utilizing the monitoring of the kernel UDEV event ofLinux, and the automatic isolation and recovery of the faulted hard disk are realized. The invention further provides a corresponding physical hard disk management device under the distributed storage system.

The invention discloses a stable sign board device which comprises a base, a combining rod and a sign board part. The left side of the base is internally provided with an inner spiral pattern trough. The upper inner wall and the lower inner wall at the right side of the inner spiral pattern trough are symmetrically provided with sliding troughs. One side, which is far from the inner spiral pattern trough, of the sliding trough is provided with an oblique hole. Each sliding trough is internally provided with a guiding rod. The guiding rod is connected with a sliding block in a slidable matching manner. The sliding block slidably matches the sliding trough. A first tension spring surrounds the guiding rod at the right side of the sliding block. One side, which is next to the inner spiral pattern trough, of the sliding block penetrates through the inner spiral pattern trough. A first through hole vertically penetrates through the sliding block. The first through hole is internally provided with a first accommodating trough at the central part. A first pressing block is slidably arranged in the first accommodating trough. A block is slidably connected in the first through hole. The stable sign board device has advantages of simple structure, high convenience in mounting, high stability, effective electric shock preventing function and effective safety improvement.

The invention provides railway power line fault automatic isolation system and method. The system comprises substation control layer equipment, a plurality of line interval layer equipments arranged along a power line and a plurality of normally-closed switches arranged on the power line corresponding to the plurality of line interval layer equipments one to one, wherein the plurality of line interval layer equipments divide the power line into a plurality of sections; the substation control layer equipment is used for obtaining information relative to a fault position and transferring isolation indication signals to the line interval layer equipment at the endpoint of a section containing the fault position according to the information of the fault position; the line interval layer equipments are used for receiving the isolation indication signals from the substation control layer equipment and responding the received isolation indication signals to control the switches correspondingto the line interval layer equipments to open. The railway power line fault automatic isolation system and method have the advantages of automatically and rapidly isolating the fault section, saving the manpower and material resources and being beneficial to rapidly recovering the power.

The invention discloses damage isolation and residual working system acquisition methods of a ship steam power piping system. The damage isolation method comprises the following steps: establishing a function logic model of the ship steam power piping system through a mutual coupling manner of a function tree and a double-layer directed graph; and according to a damage condition of a valve of the ship steam power piping system, isolating the damaged valve through a connection relation of an operation stack and a dynamically modified vertex. The residual working system acquisition method comprises the following steps: on the basis of the damage isolation method, establishing a steam supply path search algorithm through a multi-way tree extension and traversing manner, and acquiring a working system so as to predicate the quantity of available main steam turbines and the quantity of boilers with a steam supply capability, namely an X-furnace and X-machine working system. By virtue of adopting the damage isolation and residual working system acquisition methods, the automatic isolation of a damaged region and the automatic acquisition of a residual working capability are realized; the automatic level of the battle damage evaluation of a steam power system is improved; the residual working capability of the power system is easy to grasp, and the speed and accuracy of a damage evaluation state are improved.

The invention provides a waste heat removal system and method and a nuclear power system. The waste heat removal system is characterized in that a main pipe is connected between a hot section and a cold section of a reactor coolant system, a small-flow pipe is connected between two communicating ports of the main pipe, a self-operated pressure difference regulating valve is arranged on the small-flow pipe, a before-pump pressure tapping pipe is arranged between the front section of a main pipe pump and the regulating valve, an after-pump pressure tapping pipe is arranged between the rear section of the main pipe pump and the regulating valve, when the before-pump isolating valve on the main pipe is opened and the after-pump isolating valve is closed, or the pressure of a coolant in the cold section is increased, the pressure difference of the regulating valve is greater than a set value, so that the regulating valve is automatically opened, and communication between the small-flow pipe and the main pipe is achieved; and when the before-pump and after-pump isolating valves on the main pipe are both opened, the pressure difference of the regulating valve is less than the set value, so that the regulating valve is closed, and the small-flow pipe is disconnected from the main pipe. Therefore, the system can realize automatic opening and closing of the small-flow pipeline under different required working conditions on the premise of not needing additional instrument control logic configuration, so that the system has the advantages of simple structure and high reliability.

The invention relates to a control method of an intelligent isolation guardrail, a storage medium, a terminal and the isolation guardrail, and solves the problem that the risk of a secondary traffic accident cannot be effectively reduced because a driver behind is simply warned by a warning board. The method comprises the following steps: acquiring current traffic accident site information of a traffic accident site, wherein the traffic accident location information comprises traffic accident positioning information and vehicle specific location information; searching current guardrail callinginformation corresponding to the current traffic accident positioning information; calling the intelligent isolation guardrail corresponding to the guardrail calling information according to the traffic accident positioning information; and enclosing the current traffic accident site to form an isolation area through the called intelligent isolation guardrail according to the specific position information of the current vehicle. With application of the intelligent isolation guardrail, once a car accident happens, the area where the car accident happens is automatically isolated in time, the driver behind is effectively warned, and the risk that the driver behind does not pay attention to the accident and then the secondary car accident occurs is reduced.