37results about How to "Reliable seating" patented technology

The valve mounting system of the invention incorporates a hard cartridge with a grove on its outer, distal surface and a slot communicating distal from the end of the cartridge with the grove and a specially configured elastomeric valve attached to an outer band with a short tab. The band is positioned with the tab aligned with the slot and is stretched and is slid proximally over the cartridge until the tap enters the slot and the band snaps into the seats in the groove. The width of the slot is the same as the width of the tab providing exact alignment of the valve element with the seat provided in the cartridge. The tab can be disposed at an angle to the seat to preload the valve element against the seat.

Surgical instrument with a handpiece having a drive and with a surgical tool, which has a tube and a working part with a shaft and with a tool head, the tube of the surgical tool can be detachably connected to the handpiece by a first coupling part and the shaft of the working part can be detachably connected to a drive shaft in the form of a pin of the drive by a second coupling part simultaneously.

A bridge plug that blocks off oil tube is used in underground blocking oil tube during a pressure operation in the oil, gas or water well in an oilfield. From top to bottom, the bridge plug consists of salvage part, slip setting part, sealing part and slip release part. Steel wire is used for seat delivery, salvage and unsealing. The slip release part may accurately determine the position of the bridge plug. In both sealing part and slip setting part, self-locking devices are provided to realize reliable sealing. During salvage, a special tool is used to cooperate with the salvage part and unseal and take out the bridge plug. After replacement of packing elements and shear pins and simple maintenance, this bridge plug may be used repeatedly. The bridge plug adopts a double-slip structure and realizes the function of blocking off oil tube by using mechanical vibration and self-locking principle. It has the following advantages: sealing in any position, large sealing pressure difference, salvage, blocking of the oil tubes with a very small aperture, and blocking by section.

The invention discloses a probe of an FDT (Formation Dynamic Test) module type formation tester of a formatting dynamic monitoring system, belonging to the technology of oil-gas exploration. The probe comprises a probe piston, a packer, a probe body, a connecting plate, a connecting screw, a filter sleeve, a filter piston, a probe plug, an elastic block, a positioning sleeve, a baffle ring, a piston body, a pressure-limiting valve, a guide block, a fixing screw and a fluid conveying pipe. According to the probe disclosed by the invention, the area of a formation which is packed by the packer is enlarged, a plurality of diversion trenches are added beside a sampling port of the packer, consequently, liquid sampling is facilitated, and the FDT module type formation tester can be more effectively and safely used in an unconsolidated formation, an oil sheet and a low permeable formation; the FDT module type formation tester is more reliable in sealing, more convenient in positioning and faster in sampling; and the FDT module type formation tester is more convenient and reliable to use, wider in application range and more outstanding in effect.

The invention relates to a device for drying shoes, gloves or garments comprising a fan which produces an airflow and which is accommodated in a housing. The housing comprises two openings that are connected to two tube sockets which are arranged opposite one another and which are fastened to said housing. The tube sockets are connected to tubes for guiding the airflow. To this end, the tube sockets are angular and one end of each tube socket is rotatably connected to the housing while forming a swivel joint.

This is a kind of packer. The oil pipe is pressed and rubber cylinder is expanded to seal the ring space of oil sleeve. The inner cavity pressure of rubber cylinder assembly keeps constant under the action of check valve. The packer is anchored on the sleeve. After expanding, rubber cylinder assembly firmly attaches on the inner wall of sleeve and seals the ring space of oil sleeve. There is enough anchoring force between rubber cylinder and sleeve to make there is no relative movement between the packer and sleeve. Thus, sealing is firm. Since the rubber cylinder has no slips, the sleeve will not be damaged.

A connecting device for a pipe comprises a coupling body and a clamping collar. The clamping collar is divided into an axially inner function section and an axially outer actuation section, with a seal positioned between facing front sides of the axially inner function section and the axially outer actuation section. The seal is for sealing against an inner wall of the coupling body and against an outer wall surface of a pipe received within the clamping collar, when the clamping collar is within the coupling body.

The invention relates to a bar (1) of a knitting machine, which has a plurality of grooves (3) for accommodating loop-forming elements (5), which are arranged alongside each other along the longitudinal extension of the bar (1), Each groove (3) has a groove base (16), two groove sides (18, 19) and a notch (17). It is also desirable to achieve a satisfactory fit of the loop-forming element in the bar after several replacements of the loop-forming element. For this purpose it is provided that the width of the groove (3) at the notch (17) is greater than the width at the groove bottom (16).

A connector protection structure of motor includes a motor case that houses the motor, a connector that is placed on an outer surface of the motor case, and a protection member that is provided between the connector and a side member (LSM) of a vehicle, and that is fixed on the motor case. The protection member includes a protection section that is provided in a projected arrangement around the connector, a fixing section that is linked to the protection section and that is fixed by a bolt on a rear surface of the motor case, and a support section that is linked to the fixing section, that includes a through hole through which a stud, provided in a projected arrangement on a side surface of the motor case, penetrates, and that is supported on the side surface by the stud.

The invention discloses a pressure-resistant packer. The pressure-resistant packer comprises a shell, a sleeve head is welded to the outer wall of one side of the shell, and a first connecting seat iswelded to the outer wall of the other side of the shell. A clamping groove is formed in the outer side of the side, away from the shell, of the first connecting seat. The inner wall of the clamping groove is connected with a setting sleeve in an inserted mode. An elastic sealing sleeve is connected with the outer wall of the end, close to the shell, of the setting sleeve in a sleeving mode. Connecting pipes are connected with the central axis positions of the outer walls of the two sides of the setting sleeve in a sleeving mode. A second clamping groove is formed in the inner wall of each connecting pipe. The inner wall of each second clamping groove is connected with a sleeve in a clamped mode. According to the pressure-resistant packer, through the elastic sealing sleeve and an anchor,the defects that the existing operation that setting and de-sealing of the packer are controlled by using upward-lifting and downward-placing of a pipe column is cumbersome and long in time consumingare effectively avoided; a multi-stage de-sealing pipe is matched with an upward flipping plate, in-advance de-sealing of an existing packer during failure of a hydraulic circuit can be solved; and through an I-shaped slip sleeve, the supporting property is good, and the upper setting sleeve is matched, the setting state of the packer is not affected, and setting is reliable.

The invention relates to a deep-water packer and belongs to the technical field of deep-sea oil-gas testing operation equipment. The packer comprises an upper connector, a central pipe, a lower connector, a clamp, a rubber sleeve, a sliding sleeve and a locking sleeve, and the upper connector is mounted at the top end of the central pipe; the lower connector is mounted at the bottom end of the central pipe, the clamp is mounted on the position, below the upper connector, of the central pipe, and the position, below an upper conical body, of the central pipe is sleeved with the sliding sleeve and the locking sleeve; and a lower conical body is mounted on the position, below the locking sleeve, of the central pipe, and a pressing piece is arranged between the lower conical body and the locking sleeve. The packer is compact in structure and easy and convenient to operate, the defects that the existing operation that pulling up and putting down of a pipe column are utilized to control packer seat sealing and sealing removal is tedious and long in time consumption are overcome, and the problem that an existing packer is subjected to sealing removal in advance when hydraulic oil ways lose efficacy, so that the stratum environment is polluted and destroyed is solved; two hydraulic oil ways of the deep-water packer do not affect the seat sealing state of the packer, and seat sealing is reliable; and the deep-water packer is particularly suitable for ocean deep-water oil-gas well operation.

The invention relates to a wedge-type compression packer. The wedge-type compression packer comprises a steel rib with a conical face; the steel rib is sequentially provided with a sealing barrel, a push barrel and a positioning barrel; the inner bore of the sealing barrel is provided with a conical face; the conical face of the steel rib is matched with the conical face of the sealing barrel; the positioning barrel is provided with a fixed lock ring, a positioning sleeve and a deblocking shear pin; an inner bore at the lower end of the push barrel is provided with a moving lock ring; a sealing ring A is arranged between the push barrel and the positioning barrel; a sealing ring B is arranged between the push barrel and the steel rib; and the steel rib is provided with an overflow pressure guide hole.

The invention relates to the technical field of oil field and oil well drilling and production, in particular to a hydraulic setting bridge plug. The hydraulic setting bridge plug comprises an upper connector, an upper conical body, an upper rubber cylinder, an upper spacer ring, a middle rubber cylinder, a lower spacer ring, a lower rubber cylinder, a lower conical body, an outer cylinder, a piston, a pin and a lower connector. The upper connector is connected with the lower connector, and the upper conical body, the upper rubber cylinder, the upper spacer ring, the middle rubber cylinder, the lower spacer ring, the lower rubber cylinder and the lower conical body are sequentially arranged on the upper connector in a sleeving mode from top to bottom. The lower portion of the lower conicalbody is connected with the upper portion of the piston, and the piston is arranged between the outer cylinder and the upper connector. The lower portion of the outer cylinder is connected with the lower connector through the pin, and the upper portion of the piston and the upper portion of the outer cylinder are provided with mutually-matched ratchets correspondingly. A liquid passing hole is formed in the lower portion of the upper connector and located below the piston. According to the hydraulic setting bridge plug, through cooperative use of the three rubber cylinders with different hardnesses, reliable sealing can be achieved, the upper connector and the lower connector are each made of a cast iron material, and thus drilling is facilitated.

The invention discloses a cava-free automatic liquid drainage throttle device. The cava-free automatic liquid drainage throttle device comprises a central pipe, one end of the central pipe is sleeved with a fishing neck, and the central pipe is sequentially sleeved with a pressing nut, an upper gland, an elastic sleeve, a lower gland, an expansion force head and a locking piece claw in the direction far away from the fishing neck; the pressing nut is in threaded connection with the central pipe and abuts against the upper gland, the elastic sleeve is clamped between the upper gland and the lower gland, one end of the expansion force head abuts against the other end of the lower gland and is in threaded connection with the central pipe, the locking piece claw is arranged on the expansion force head in a sleeving mode, a cavity is formed between the expansion force head and the central pipe, a limit block is formed on the inner wall of the expansion force head, and an air tap is arranged in the fishing neck. The cava-free automatic liquid drainage throttle device can enable the deblocking process to be easier, avoids the condition that liquid drainage is conducted by enabling a steel wire to trip in a special tool and is convenient to use.