SU1209978A2 - End seal - Google Patents

Description

The invention relates to the sealing area of rotating shafts, namely, to mechanical seals of centrifugal compressors.

The aim of the invention is to improve the reliability of the seal by eliminating the possibility of circumferential rotation of the disk on the shaft and disruption of the rubber ring.

FIG. Figure 1 shows the rotating part of the seal with a disc, ring, nut and locking bar, a longitudinal section; in fig. 2 shows section A-A in FIG. one.

In the end seal assembly, an annular groove 4 is formed on the shaft 1 under the nut 2 and the ring 3. A l-shaped locking strip 5 is installed in the groove 4, and its bent end b is placed in the radial groove 7 on the non-working end 8 of the disk 9 and in the axial groove 10 on the inner ring 11 of the ring 3. The free end 12 of the locking bar 5 is bent into the groove 13, made on the end of the nut 2.

When assembling the seal, a disk 9 is placed on the shaft 1 and a locking bar 5 is installed in the shaft groove 4, placing its bent end 6 in the groove 7 on the butt 8 of the disk 9. Then put the ring 3 on the locking bar 5 so that the groove 10 on the inside Ske 11 of the ring 3 covers the bent part 6 of the locking bar 5. After that, the nut 2 is screwed onto the shaft 1, and the free end 12 of the locking bar 5 is folded into the groove 13 from the inside of the nut 2.

During the operation of the seal, the retainer plate 5, covered by the inner bore diameter and groove 10 of the inner ring 11 of the ring 3, ensures reliable fixation of both the disk 9 and the ring 3 from the circumferential rotation, without axial impact on them causing uncontrolled deformation of the disk 9 At the same time, the reliability and quality of the seal assembly does not depend on the number of assemblies and disassemblies, which ensures the stability of the sealing properties, small leakage of the sealing fluid through the contact pair and the increased service life of the end face. tightness.

ten

/ 1- / 1

Compiled by G. Mak.chakov

Editor N. PushnenkovaTehred I. VeresKorrektor I. Erdeyi

Order 495/47 Circulation 880 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

2

Claims (1)

FACE SEAL by ed. St. No. 1128038, characterized in that, in order to increase reliability, the seal is provided with an L-shaped bar, radial and axial grooves are made on the non-working end of the disk and on the inner surface of the ring, and an axial groove is made on the shaft, and the L-shaped plate is placed in said grooves and grooves with the possibility of locking the nut with its free end.