A duct coupling system includes a first and second duct, a vibration attenuation system, a rigid ring, and a fastening system. The first duct has a first flange aligned with a second flange of the second duct. The vibration attenuating system abuts a first side and a second side of the first flange and abuts a first side of the second flange. A portion of the vibration attenuating system encircles the first duct. The vibration attenuating system is configured to attenuate vibrations passing between the first and second ducts. The rigid ring encircles the first duct and abuts the vibration attenuation system. The fastening system couples the first duct to the second duct and compresses the vibration attenuating system. The rigid ring does not contact the first duct and the first duct does not contact the second duct.

A flanged sealing ring which is used to seal a pipe connection is produced from a material having a metal fraction distributed substantially homogeneously in the flanged sealing ring. The flanged sealing ring can be used in a device for detecting components of a flanged sealing ring in a pipeline system that includes a plurality of pipes, at least two of which are held against each other at a flange in such a way that sealing is effected by a flanged sealing ring. Using a metal detector and a gate for removing a metal-containing substance from the pipeline, which gate is arranged behind the metal detector in the conveying direction, the flanged sealing ring can then be detected, and therefore, when components of the flanged sealing ring detach, detection can be performed at the metal detector and discharging can be performed at the gate.

A flanged sealing ring which is used to seal a pipe connection is produced from a material having a metal fraction distributed substantially homogeneously in the flanged sealing ring. The flanged sealing ring can be used in a device for detecting components of a flanged sealing ring in a pipeline system that includes a plurality of pipes, at least two of which are held against each other at a flange in such a way that sealing is effected by a flanged sealing ring. Using a metal detector and a gate for removing a metal-containing substance from the pipeline, which gate is arranged behind the metal detector in the conveying direction, the flanged sealing ring can then be detected, and therefore, when components of the flanged sealing ring detach, detection can be performed at the metal detector and discharging can be performed at the gate.

A pipeline connection device includes a first connecting member, a second connecting member and a sealing member. The first connecting member includes a first channel and an abutting portion. The second connecting member includes a second channel and a first groove portion. The first groove portion includes a first side wall and a first receiving groove to receive the sealing member. At least part of the abutting portion is received in the first receiving groove and abuts against the sealing element. A first gap not greater than 0.3 mm is provided between the abutting portion and the first side wall; or the first connecting member and the second connecting member include at most two annular friction surfaces. As a result, mutual jamming of the first connecting member and the second connecting member can be avoided. Besides, a pipeline adapting assembly having the pipeline connection device is disclosed.

A coupling assembly includes a locking collar, a gasket, and a retaining sleeve. The locking collar includes a body and external threads. The external threads are formed on an outer circumferential surface of the body. The gasket is positioned between first and second pipes, and the locking collar. The retaining sleeve includes internal threads formed in an inner circumferential surface of the retaining sleeve. Each internal thread is configured to receive a respective external thread of the locking collar. The retaining sleeve is rotatable between an unlocked position in which the gasket seal is disengaged from the locking collar and the first and second pipes, and a locked position in which the external threads and the internal threads cooperate to move the retaining sleeve axially along the locking collar so that the gasket seal is engaged with the locking collar and the first and second pipes.

Gaskets for sealing two mating surfaces have an inner ring positioned between two inner sealing deformable layers and an outer ring positioned exterior and concentric to the inner ring, the outer ring positioned between two outer sealing deformable layers. The two inner sealing deformable layers are configured to compress a greater amount than the two outer sealing deformable layers when a compressive force is applied. In a compressed configuration, the two inner sealing deformable layers fill in the crevices of the mating surfaces of a corroded flange connection thereby avoiding immediate maintenance for the damaged flanges. The inner and outer rings have grooves and ridges on upper and lower surfaces to retain and receive portions of the inner and outer sealing deformable layers in a sealed flange connection.

Gaskets for sealing two mating surfaces have an inner ring positioned between two inner sealing deformable layers and an outer ring positioned exterior and concentric to the inner ring, the outer ring positioned between two outer sealing deformable layers. The two inner sealing deformable layers are configured to compress a greater amount than the two outer sealing deformable layers when a compressive force is applied. In a compressed configuration, the two inner sealing deformable layers fill in the crevices of the mating surfaces of a corroded flange connection thereby avoiding immediate maintenance for the damaged flanges. The inner and outer rings have grooves and ridges on upper and lower surfaces to retain and receive portions of the inner and outer sealing deformable layers in a sealed flange connection.

Provided are hose connection joint structure for a battery cooling system of a battery pack including an upper case configured to seal an upper portion of the battery pack, a hose connection part disposed on an upper surface of the upper case and being configured to introduce cooling water from the outside, and a sealing member disposed between the upper case and the hose connection part, wherein the sealing member comprises a bracket in contact with a lower surface of the hose connection part and being configured to block the cooling water from leaking from the lower surface of the hose connection part, and a gasket surrounding the bracket and being in contact with the upper surface of the upper case to block the cooling water from leaking from the upper surface of the upper case.

Provided are hose connection joint structure for a battery cooling system of a battery pack including an upper case configured to seal an upper portion of the battery pack, a hose connection part disposed on an upper surface of the upper case and being configured to introduce cooling water from the outside, and a sealing member disposed between the upper case and the hose connection part, wherein the sealing member comprises a bracket in contact with a lower surface of the hose connection part and being configured to block the cooling water from leaking from the lower surface of the hose connection part, and a gasket surrounding the bracket and being in contact with the upper surface of the upper case to block the cooling water from leaking from the upper surface of the upper case.

A guided wave radar level gauge adapted for mounting on a nozzle of a tank, including an attachment collar with an opening configured to be aligned with the nozzle and to be secured by means of an annular clamping device, and a transmission line probe attached to an exterior end of a probe connector. The GWR level gauge further comprises an annular sealing gasket fitted in the collar opening, the annular sealing gasket having a central opening through which the central probe connector extends, and a distancing sleeve arranged around the exterior end of the probe connector and having a radially protruding collar portion, wherein processing circuitry is configured to detect an impedance change caused by tank content or condensate which has passed through the central opening of the sealing gasket and collected in an annular space immediately surrounding the radially protruding collar portion.