9results about How to "Avoid collateral damage" patented technology

The invention discloses an air-switch-free 1U surge protector, and relates to the technical field of surge protectors, the air-switch-free 1U surge protector comprises a shell and a piezoresistor arranged in the shell, the piezoresistor is provided with a first electrode end and a second electrode end, the shell is internally provided with a tripping electrode slice, and the tripping electrode slice is connected with the first electrode end through tin soldering; an overcurrent protection module is arranged in the shell and comprises a static contact, an electromagnetic coil module, a moving contact connecting piece, a second tension spring and a magnetic moving part. According to the surge protector, through the addition of the overcurrent protection module, the circuit can be quickly and effectively cut off when the tripping point of the surge protector cannot be normally tripped, so that a combustion accident and associated damage to equipment caused by thermal tripping failure of the surge protector are avoided.

The utility model relates to the technical field of power batteries, and provides a battery distribution box and a battery pack. The battery distribution box comprises a shell, a BMS main board and a BDU assembly, wherein the BMS main board and the BDU assembly are arranged in the shell. The BDU assembly comprises a contactor and a copper bar assembly connected with a main contact of the contactor. A coil contact of the contactor is welded with the control bonding pad to be communicated with a low-voltage control circuit on the BMS main board, and a connecting piece on the copper bar assembly is welded with the acquisition bonding pad to be communicated with a high-voltage acquisition circuit on the BMS main board. According to the battery distribution box disclosed by the utility model, the BDU assembly and the BMS mainboard are integrated in the same shell, so that the occupation of the space in the battery pack can be reduced, the connector and the copper bar assembly in the BDU assembly are directly welded and connected with the bonding pad of the BMS mainboard, and the connection hidden danger caused by wiring harness connection is eliminated; and the connection strength and the connection reliability between the BMS mainboard and the BDU assembly are improved.

This invention discloses a double-end-face self-cooling mechanical seal, relating to the field of centrifugal pumps. The device includes a cooling sleeve, a transmission fixing component, a lower static seal seat, an upper static seal seat, a lower static seal ring, an upper static seal ring, a lower static seal gland, an upper static seal gland, and two sets of clamping moving rings. The cooling sleeve is inserted into the centrifugal pump impeller shaft and is located at the end of the pump head. The transmission fixing component is located inside the cooling sleeve. The lower static seal seat is installed on the side of the cooling sleeve away from the pump head, and the upper static seal seat is installed on the side of the cooling sleeve closer to the pump head. The two sets of clamping moving rings are slidably connected to both sides of the transmission fixing component. Two sets of elastic elements are provided between the two sets of clamping moving rings and the transmission fixing component. This device uses double independent end-face seals to form a double barrier, preventing direct leakage of the medium to the environment; the integrated cooling sleeve allows the sealing components to be fully immersed and cooled, avoiding dry friction burning of the sealing surfaces; and the double-sided independent elastic pre-tightening achieves independent compensation for wear on the upper and lower sealing surfaces.

The utility model discloses a battery pack and lamp panel separated box body which comprises a box body, the box body comprises a battery pack box body used for installing a battery pack and a lamp panel box body used for installing a lamp panel, the battery pack box body and the lamp panel box body are independently separated from each other, the lamp panel box body is located above the battery pack box body, and the lamp panel box body is located above the battery pack box body. The lamp panel box body is provided with a lamp panel groove used for installing a lamp panel. According to the box body with the battery pack and the lamp panel separated, associated damage to the battery pack box body caused by water entering the lamp panel box body can be avoided, and the product replacement and maintenance cost is reduced.

The present invention discloses a sodium ion battery assembly for energy storage and a method for using the same, comprising a protective shell, an explosion-proof cavity being provided at the lower end of the protective shell, and an air vent being provided on the inner wall of the explosion-proof cavity. By dividing the protective shell as a whole into two chambers, and cooperating with each other through isolation units, the sodium ion battery pack can be placed separately in a normal use state and an abnormal state, and the battery protection unit is provided to ensure that the sodium ion battery pack body can prevent its expansion speed from being too fast in the first time when it is heated and expanded, and reduce the conditions for the sodium ion battery pack body to burn, and cooperate with the falling flame retardant unit to insert the sodium ion battery pack body in a normal operating state, and once the sodium ion battery pack body expands and deforms, the falling flame retardant unit is separated from it, and the sodium ion battery pack body falls to the explosion-proof cavity under the action of gravity for isolation, and is isolated from the adjacent battery packs that have not been abnormal, to prevent joint damage.

The present application discloses a 1U surge protector without air switch, which relates to the technical field of surge protectors, and includes a shell, and a varistor arranged in the shell, the varistor is provided with a first electrode end and a second electrode end, a tripping electrode sheet is arranged in the shell, and the tripping electrode sheet is connected to the first electrode end by soldering; an overcurrent protection module is arranged in the shell, and the overcurrent protection module includes a static contact, an electromagnetic coil module, a moving contact connecting sheet, a second tension spring and a magnetic moving part. By adding an overcurrent protection module, the present application can quickly and effectively cut off the line when the tripping point of the surge protector cannot trip normally, thereby avoiding the combustion accident caused by the failure of the thermal tripping of the surge protector and the associated damage to the equipment.

A pair of anti-falling trousers relates to the field of trousers and comprises trousers, a high-density latex bottom pad is fixedly mounted at the hip bone position in the trousers, extending parts on the lower side of the high-density latex bottom pad are respectively connected to the crotch position in the trousers, an inner concave cavity is formed in the high-density latex bottom pad, and the inner concave cavity is communicated with the hip bone position in the trousers. According to the utility model, the protective pad is arranged at the hip bone part of the trousers, so that the hip can be better embedded into the inner concave cavity, the hip bone part is surrounded and protected by the high-density latex bottom pad, and once the hip bone part falls down, the hip bone part is prevented from falling down, so that the hip bone part is prevented from falling down. The high-density latex bottom pad and the buffering protruding parts on the surface act together to conduct buffering and springback protection on the hip bone area of a person, then the lumbar vertebra hip bone can be effectively prevented from being hurt, and the safety of the hip bone is greatly improved.

This invention discloses a medical pad that is less prone to fiber shedding and its preparation method. The medical pad is made from polytetrafluoroethylene (PTFE) short fibers through a nonwoven process and a laser perforation process. The preparation steps include using PTFE short fibers as raw materials, opening and carding them, feeding them into a web-laying machine to obtain a loosely structured PTFE fiber layer, then reinforcing it with a needle punch to obtain a PTFE felt sheet, and finally using a laser perforation process to form uniformly distributed through holes on the PTFE felt sheet, ultimately obtaining the medical pad that is less prone to fiber shedding. This medical pad is used in the field of vascular surgery as a pad during vascular suturing. It can seal needle holes and reduce the cutting force of sutures on the vessel wall. Compared with conventional short-fiber felt sheets, the fibers in the medical pad of this invention are less prone to shedding.

A construction device for increasing the storey height of a building and a construction method for increasing the storey height of the building, comprising a support steel frame (4), characterized in that: there are more than one support steel frame (4) and they are arranged in pairs, a lifting frame (9) is installed between two parallel support steel frames (4), a height adjustment hydraulic cylinder (8) is installed between the upper end of the support steel frame (4) and the upper four corners of the lifting frame (9), horizontal slide rails (10) are horizontally arranged on the left and right sides of the bottom of the lifting frame (9) along the length direction of the support steel frame (4), a sliding seat (11) is installed on the horizontal slide rail (10), a vertical lifting device (15) is vertically installed on the sliding seat (11), and a horizontally arranged bearing frame (14) is installed on the upper end of the vertical lifting device (15). The invention has a reasonable structure, is safe and reliable to use, can accurately cut and remove floor slabs and beams and increase storey height, avoids collateral damage to buildings caused by traditional demolition construction methods, and has high demolition efficiency.