A sealing system including a first end and a second end with flexible bellows extending therebetween. The first end includes a base plate with an inner ring having an inner diameter. The inner ring is configured to receive a pipe therethrough. The pipe has an outer diameter, which is smaller than the inner diameter of the inner ring. The bellows of the sealing system has a first length in a first position and second length in a second position. Upon axial expansion of the pipe, the bellows is configured to move from the first position to the second position. The sealing system may also comprise a mechanical protective element, such as a shroud which extends around the bellows. Movement of the bellows can be further limited with rods extending from the shroud to a surrounding substrate or a cable fixing a maximum distance between the pipe and the shroud.

A pipe connection compensation device by magnetic fluid sealing comprising a compensation pipe, sealed end cap, coil, annular permanent magnet and tightening rod is provided, designed and configured in a novel manner to ensure the pipe connection compensation device by magnetic fluid sealing achieves a better sealing effect.

A pipe connection compensation device by magnetic fluid sealing comprising a compensation pipe, sealed end cap, coil, annular permanent magnet and tightening rod is provided, designed and configured in a novel manner to ensure the pipe connection compensation device by magnetic fluid sealing achieves a better sealing effect.

A system for equalizing a pressure in an ionization chamber of a radiation device is provided. The system may include the ionization chamber including: a chamber housing including one or more chamber walls; a chamber volume inside the chamber housing, the chamber volume being filled with a radiation sensitive material; and a pressure adjustment apparatus operably coupled to the chamber volume via at least one wall of the one or more chamber walls, the pressure adjustment apparatus being configured to equalize a first pressure of the radiation sensitive material inside the chamber volume and a second pressure of ambient air outside the chamber housing.

An eccentric universal joint mechanism, even when there is a lateral displacement between a first pipe and a second pipe, can absorb the displacement and connect the first pipe and the second pipe. The eccentric universal joint mechanism includes: a first sleeve; a second sleeve; and an eccentric universal joint connecting the first sleeve and the second sleeve. The eccentric universal joint includes a first eccentric pipe, and a second eccentric pipe rotatably joined to the first eccentric pipe. A displacement between the center line of the first eccentric pipe and the center line of the second eccentric pipe is determined by the rotational position of the second eccentric pipe.

A retaining ring system and method of use for fastening two components together. The retaining ring in one embodiment can have a hexagon cross-sectional shape, and in use can be housed between two grooves on adjacent conduits that can have an isosceles trapezoidal shape. The grooves can be configured so that if a bearing surface of one component having a perpendicular line emanating away from it would cross somewhere along an opposite bearing surface of the second component.

A connection device serves for connecting a first tube end, which can be connected to a vacuum pump, to a second tube end which can be connected to a chamber to be evacuated. To this end, the connection element has a tube element for fluidically connecting the vacuum pump to the chamber to be evacuated. The tube element is connected on each side via a connection element to the respective tube end. At least one of the two connection elements is configured here in such a way that it is exclusively suitable for transmitting torques. Furthermore, a decoupling element is provided for mechanically decoupling the at least one connection element, which is exclusively suitable for transmitting torques, from the corresponding tube end.

A method of attenuating annular pressure buildup within a wellbore. The method includes accessing a wellbore, with the wellbore having an annulus disposed between first and second strings of casing. The method also includes placing a column of cement around the second string of casing generally below the first string of casing. The method further includes pumping a fluid mixture into the annulus, forming a fluid column. The fluid mixture comprises a carrier fluid, and a plurality of compressible particles dispersed in the carrier fluid. Each of the compressible particles is fabricated to partially collapse in response to thermal expansion of the fluid mixture. The method also includes placing a wellhead over the wellbore, thereby forming a trapped annulus in the wellbore. The method additionally includes at least partially sealing the annular region along at least one depth above the column of cement to inhibit vertical migration of the compressible particles.

Embodiments of the present invention are directed to conduit fittings with internal grounding capability. One expansion fitting allows for lengthwise expansion of an inner conduit utilizing an interior cylinder. The interior cylinder has a grounding portion that is conductive, and the grounding portion is electrically connected with a ground screw, Earth ground, or neutral ground. Another deflection fitting allows for angular deflection of connected conduits. The angular deflection fitting has an outer sleeve that is folded over an inner tube, and the outer sleeve is electrically connected with a ground screw, Earth ground, or neutral ground. Another expansion-deflection fitting shares the properties of the expansion fitting and the deflection fitting.

Embodiments of the present invention are directed to conduit fittings with internal grounding capability. One expansion fitting allows for lengthwise expansion of an inner conduit utilizing an interior cylinder. The interior cylinder has a grounding portion that is conductive, and the grounding portion is electrically connected with a ground screw, Earth ground, or neutral ground. Another deflection fitting allows for angular deflection of connected conduits. The angular deflection fitting has an outer sleeve that is folded over an inner tube, and the outer sleeve is electrically connected with a ground screw, Earth ground, or neutral ground. Another expansion-deflection fitting shares the properties of the expansion fitting and the deflection fitting.