The invention relates to a pressure-compensated rotary joint, which belongs to the technical field of compensators. The rotary joint mainly comprises an outer sleeve, an inner tube and a gland flange, wherein a thrust ring and a connection baffle ring are fixed in the outer sleeve; a first baffle ring and a second baffle ring are fixed on the periphery of the inner tube, and the wall of the inner tube is provided with a through hole; the gland flange is provided with an extension ring; the end face of the first baffle ring is contacted with the thrust ring, and a rolling piece is installed between the end face of the second baffle ring and the opposite end face of the connection baffle ring; a seal ring is filled between the end face of the extension ring and the connection baffle ring, and a backing ring is installed in the extension ring; a sealing ring, of which the inner circle is provided with a groove, is installed between the first baffle ring and the second baffle ring; and the groove is communicated with the through hole in the wall of the inner tube. In the invention, a reliable double seal is formed by the seal ring and the sealing ring between the outer sleeve and the inner tube, and the abrasion of the sealing ring can be compensated, thereby effectively avoiding leakage at the movable joint of the pipeline for a long time.

Pressure-compensated rotary joint

Pipe used high pressure resistant rotary compensator

The invention relates to an integrated high-pressure resistant non-leakage sleeve compensator. The integrated high-pressure resistant non-leakage sleeve compensator comprises an inner pipe, a connecting pipe, an outer casing pipe and a padding flange, wherein the outer casing pipe is arranged on the inner pipe in a sleeved mode. One end of the padding flange extends into the outer casing pipe, the inner surface of the outer casing pipe is provided with an annular inner boss, sealing padding is arranged between the annular inner boss and the end, extending into the outer casing pipe, of the padding flange, the outer surface of the inner pipe is provided with an annular inner boss to form an axial limiting structure of the inner pipe, the padding flange is connected with the outer casing pipe through a fastener, the connecting pipe and the outer casing pipe are of an integral structure, an impact resisting plate is arranged between the sealing padding and the annular inner boss, and abrasion resisting carbon fiber layers are arranged between the sealing padding and the outer surface of the inner pipe and between the sealing padding and the inner surface of the outer casing pipe. The integrated high-pressure resistant non-leakage sleeve compensator thoroughly solves the problems that according to an existing welding method, flaw detection of a weld joint is difficult, and even flaw detection cannot be carried out. Meanwhile, a medium can be effectively prevented from impacting the sealing padding through the impact resisting plate and the abrasion resisting carbon fiber layers.

Integrated high-pressure resistant non-leakage sleeve compensator

Novel double-gland high-pressure pipeline displacement compensator

The invention relates to a high-pressure-resistant integrated leakage-free rotating compensator. The high-pressure-resistant integrated leakage-free rotating compensator comprises an inner pipe, an outer sleeve, a connecting pipe and a filler flange. The outer sleeve is arranged on the inner pipe in a sleeved mode. One end of the inner pipe penetrates through the outer sleeve to be inserted into the connecting pipe. The filler flange is arranged on the inner pipe in a sleeved mode. One end of the filler flange extends into the outer sleeve. An annular inner boss is arranged on the inner surface of the outer sleeve. The portion between the annular inner boss and the end, extending into the outer sleeve, of the filler flange is arranged on gland packing. The outer sleeve and the connecting pipe are of an integrally-formed integrated structure. An anti-impact plate is arranged between the gland packing and the annular inner boss. An abrasion-resistant carbon fiber layer is arranged between the gland packing and the outer surface of the inner pipe. An abrasion-resistant carbon fiber layer is arranged between the gland packing and the inner surface of the outer sleeve. The high-pressure-resistant integrated leakage-free rotating compensator thoroughly solves the problems that due to an existing welding method, weld joint flaw inspection can be hardly conducted and even can not be detected. Meanwhile, by arranging the abrasion-resistant carbon fiber layers and the anti-impact plate, loss of sealing material can be effectively reduced, and the sealing performance of the whole rotating compensator is improved.

High-pressure-resistant integrated leakage-free rotating compensator

The utility model discloses a rotatable sleeve compensator capable of automatically regulating seal, which comprises a reducer pipe, an inner pipe, a sealing seat, stuffing, a nut, a screw bolt, a stuffing box gland and a pressing spring which is arranged between the left end surface of the stuffing box gland and the tail part of the matched connecting screw bolt. Under the push of the elastic force of the pressing spring, the stuffing box gland always has a definite pressing force to the stuffing, the normal wear quantity of the stuffing can be automatically compensated to enable the stuffing to keep the seal to a matched piece all the time; two bosses on the right end of the inner pipe are provided with V-shaped groove rings and rolling balls, and the rolling structure enables the inner pipe and the reducer pipe to be coaxial. The wear caused by the movement of the inner pipe relative to the stuffing is the uniform coaxial wear, which is favorable to the automatic compensation of the structure and the seal adjustment as well as is favorable to the movement of the inner pipe relative to the reducer pipe. The utility model is particularly suitable for pipe networks which do not allow leakage and has large compensation quantity and large balance quantity.

Shen Xiangdong

Papers

Rotatable sleeve compensator capable of automatically regulating seal