58results about How to "Achieve secondary sealing" patented technology

The invention discloses a pipe connector sealing ring. The pipe connector sealing ring comprises an annular rib part extending in the radial direction and an annular lip part extending in the axial direction; the two sides of the rib part are each provided with an annular sealing groove; the sealing grooves on the two sides are mutually communicated; a plurality of glue injecting holes are formedin the circumferential direction of the rib part; the sealing grooves are communicated with the glue injecting holes; and the outer ends of the glue injecting holes are provided with a glue injector connector. According to the pipe connector sealing ring, by arranging a reserved standby sealing cavity and the glue injecting connector; after a sealing piece leaks, sealing glue is injected in from the glue injecting connector so that the standby sealing cavity can be filled with the sealing glue, and secondary sealing on a pipe connector is achieved. Due to secondary sealing, system shutdown overhauling caused by leaking of a certain sealing piece is avoided, the cost for replacing the system sealing piece is reduced, and besides, the extra high cost generated due to system shutdown overhauling is saved; and very high economic benefits are achieved.

The invention discloses a waterproof vent valve, which comprises a screw cap, a screw stem, a waterproof vent film and an insert with a hole. The insert can be embedded in the screw cap to contain the waterproof vent film and seal the waterproof vent film in the screw cap. After the scheme is adopted, the invention closely encapsulates the waterproof vent film and a plastic valve together throughthe simple inset structure and realizes secondary sealing through further hot melting.

A cold and hot double-acting packer comprises a plurality of liquid outlet holes formed in an inner central pipe sleeved with an outer central pipe, and a liquid inlet hole is formed in the outer central pipe sleeved with a piston, a steel bushing is connected with the upper end of the piston, the upper end of the steel bushing is connected with an upper joint, and a locking piece sleeve and a snap ring sleeve are clamped between the steel bushing and the outer central pipe; a plurality of rubber sleeves are nested on the outer central pipe and located at the lower end of the piston, and distance rings are arranged between every two rubber sleeves; an expansion cone is nested on the outer central pipe and located at the lower ends of the plurality of rubber sleeves, the lower end of the expansion cone is connected with a cylinder, and an accommodating cavity is formed among the cylinder body, the expansion cone and the outer central pipe and filled with an expansion fluid; and a sealing rubber sleeve is clamped between the plurality of rubber sleeves and the expansion cone. The cold and hot double-acting packer can perform pressure set by aid of the ground at the room temperature and achieve secondary sealing through hot expansion of the fluid at a high temperature for steam injection, the oil jacket annulus sealing reliability is high, and the oil reservoir production degree is increased.

The invention belongs to the technical field of sealed packaging containers, and particularly relates to a blister packaging box which comprises a box body and a box cover. The edge at the upper end of the box body is provided with a first arc, the outer side at the upper end of the box body is provided with a second arc, and the upper end of the box body is covered with the box cover. The secondarc is arranged at the outer side at the lower end of the first arc, the inner side of the outer end of the box cover is concave, and a clamping arc is arranged on the inner surface of the outer sideof the box cover. A concave cavity at the outer end of the box cover can be tightly connected with the edge at the upper end of the box body in a clamped mode, the outermost end of the box cover can be inserted into a groove at the edge of the upper end of the box body, and the clamping arc can be fixedly clamped with the second arc. The blister packaging box is mainly used for solving the problems that in the prior art, when cheese is contained in the blister packaging box for transportation, a packaging box cover is prone to falling off, the cheese is polluted, and meanwhile the cheese leakage is prone to occurring when a transportation vehicle jolts.

The invention provides a red wine cork capable of being removed fast and aims to provide a cork which can be removed fast without a corkscrew and can realize secondary sealing. The red wine cork comprises a cork body (1), wherein the cork body (1) is provided with a through hole (2) penetrating through the cork body (1); a pull rod (8) is arranged in the through hole (2); the diameter of the middle part (2-2) of the through hole is greater than those of the front end (2-1) and the rear end (2-3) of the through hole; the pull rod (8) comprises a front cork (3), a rear cork (6) and a connecting rod (5) for connecting the front cork (3) with the rear cork (6); a pull handle (7) is arranged on the rear cork (6); an elastic piece is arranged at the joint of the front cork (3) and the connecting rod (5); at least one of the front cork (3) and the rear cork (6) is in interference fit with the through hole (2). The red wine cork provided by the invention is used as a wine cork.

The invention provides a high-temperature seal assembly. The high-temperature seal assembly comprises a base plate and a plurality of seal blocks. The base plate is a round isolation plate, a round through hole is formed in the circle center of the base plate, the seal blocks are arranged on the base plate along the circumference, the seal blocks are composed of seal block bodies and backing plates, the seal block bodies are ceramic fiber specially-shaped folding blocks, the backing plates are specially-shaped fiber backing plates, the specially-shaped fiber backing plates make contact with the base plate, the seal blocks are fixedly arranged on the base plate, a round baffle is further arranged on the base plate, and the baffle is connected with the seal blocks internally and is in clearance fit with the seal blocks. According to the high-temperature seal assembly, existing heat-resistant seal materials are replaced by the seal blocks formed by the ceramic fiber specially-shaped folding blocks and the specially-shaped fiber backing plates, therefore, expenditures can be cut down, cost can be reduced, meanwhile, the service life of equipment can be prolonged, and losses, caused by equipment replacement and the like, in manpower, material resource, yield and the like are reduced accordingly.

The invention relates to a waterproof electrical control box, comprising a controller box body, a first sealing piece, a lining board, a second sealing piece and a baffle, wherein the baffle, the second sealing piece, the lining board and the first sealing piece are sequentially stacked from outside to inside and fastened at an opening of the controller box body by virtue of fastening screws. In the waterproof electrical control box provided by the invention, wiring ducts with open ends consistent in orientation are utilized, arranged wiring harnesses can be rapidly arranged in the wiring ducts at one time, and waterproof gaskets arranged at intervals are utilized for realizing secondary sealing on the controller box body, so that waterproof performance of the waterproof electrical controlbox is improved.

The invention provides a pipeline connecting mechanism, which comprises an outer joint, a pipe joint, an inner joint and a pressing sleeve. The pressing sleeve is interworked with the inner joint so as to jointly form a sealed chamber; the outer joint is arranged in the inner joint, partially downwards stretches out relative to the inner joint, and is connected with a pipeline on an equipment body; the pipe joint is arranged in the pressing sleeve, and upwards partially stretches out relative to the pressing sleeve; a rubber pipe is connected onto a part, stretching out of the pressing sleeve,of the pipe joint; and the outer joint and the pipe joint are connected and fixed in a screw thread way. According to the pipeline connecting mechanism provided by the invention, through the reasonable structure arrangement, a sealing effect is ensured when the equipment body outwards conveys a medium through the rubber pipe, so that the occurrence of equipment field safety accidents caused by medium leakage and seepage is avoided.