SU1203284A1 - Sealing device - Google Patents

Description

2 "The device according to claim 1, which is based on the fact that the sealing element is made of

The invention relates to seals in high pressure vessels, in particular, to the design of hydrostats for pressing metal powders.

The aim of the invention is to increase the reliability by increasing the rigidity of the device and expanding the technological capabilities of the plants by increasing the operating pressing pressure.

FIG. 1 shows the sealing element after installation in the assembly in FIG. 2, the sealing element, with deformation during the operation.

The seal assembly consists of a disc-shaped washer 1, sealing 2 and a compact 3 parts. Washer 1 has a cylindrical bore 4 and a tapered protrusion 5. At the base of the washer. transition w; its walls .; there is an annular groove 6.

In the shaped washer I, the side of which is facing the sealing part 2 ;, a cylindrical bore 4 is made, the opposite side of the barrel has a protrusion 5 with a hole / 5 facing the top of the cone to the compacting part 3. The ring bore 4 is connected to the top of the protrusion 5 channel. The annular spacing 6 is made 0.2-0.4 deep in the wall, the wall thickness is O. the base thickness ,, The washer 1 is made of sintered powder with a decrease in porosity from the periphery to the center

The device works in the following way.

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When ocyTtje is compacted, deformation of the stacks occurs, in this case the stacks are thickened at the point of contact with compacted piece 3. As the density at the place of compaction is lower than the porosity of the powder metal with a decrease in porosity from the periphery to the center.

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more than in other parts, an increase in the density of the material is also achieved during deformation. At the same time, there is a change in the angle of inclination of the ch. {., Walls, as a result of which the walls occupy a position close to Eertncalnom (about - 1-3). In this case, the wall material flows under the flat base, as a result of which the entire area of the flat base of the sealing part 2 is completely in contact with the deformed damping. Then, the protrusion 5 of the sealing element is in contact with the surface of the sealing part 3. The top of the protrusion 5 is squeezed and a partial extrusion into the opening of the seal e1: the second part 3 occurs. On the flat base side, there are angles on the non-intersecting bills: /: on the bottom plane of the base and forming the cylindrical bore 4 by the seat of the sealing part 2,

As a result, see the apex of the protrusion 5 o with a concave vertex 1Tip g (curve:: overlapping the cracks of corrosion centers, etc.). Iecrurom- Hoc iiu E partial deformation due to deformation due to: - high pressure lines

The size of the gap between the edge of the inclined wall and the tip of the cone is chosen in the range of 0.1-0.3 of the length of CTSHKi i, while the values of the balck are related to the ≈1Motive element of MeK ic iM, where the angle of inclination of the wall to the flat is smaller,

When the seal assembly is tightened, there is an additional cavity in the seal assembly, which is formed on the top of the cone over the cone, on the inner surface of the planar base and on the seal wall and

surface of the compacting part facing the seal. The presence of this additional sealed cavity has a damping effect on the operation of the seal assembly during the water hammer period.

To reduce the effort to deform and thicken the edges of the product, the seal is made of sintered titanium with a density that

20328D4

decreasing from center to periphery from 100% to 90%. During the deformation process, when the seal is compressed and crimped, the density decreases and reaches 94-96%. The fabrication of a titanium powder sealing element can save metal and increase the hydrostatic operation reliability of the installation.

Editor A. Vorovich

Compiled by Y. Kibitkin

Tehred L. Mikesh Corrector And-Erdeyi

8401/40 Circulation 897 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch PPP Patent, Uzhgorod, st. Project, 4

Fyg.2

Claims (2)

. one . SEALING DEVICE containing a shaped sealing element with a central conical protrusion on the end surface and an annular bore on the opposite end surface connected to the top of the protrusion by a channel, characterized in that, in order to increase reliability and expand technological capabilities, the sealing element is made in the form of a disk washer whose walls are located on the same end surface where the protrusion is located and are made diverging in the direction of the latter, while ota smaller protrusion height on the wall 0.1-0.3 length of the latter. 2. The device according to claim 1, wherein the sealing element is made of sintered powder metal with a decrease in porosity from the periphery to the center.