SU1333858A1 - Centrifugal pump - Google Patents

Abstract

The invention relates to pump construction and allows to increase the service life of the pump by preventing erosion of the collar of the inner casing (VC) in place of the horizontal connector. A cylindrical ring (CC) 7 is installed on VK 3 of the pump; it is in contact with the collet 5 of VK 3 and is made of a material with a lower coefficient of thermal expansion than the material of VK 3. When a temperature difference occurs between the upper and lower parts, the density of the interface 3 between cavities 8 and 9, high and low pressure is not violated, since tightness around the entire circumference is provided by CC 7, which is not affected by the uneven expansion of the halves of the VC 3. The tightness of the junction in contact with the horizontal connector 4 is complemented sealing the inner surface of the CC 1 7. yl. with CO: A9 & d eo el 00

Description

113338582

The invention relates to pump-loader no 8 and 9 with high and low pressure building, in particular, to the design of the system, is not violated, since the electro-electric thermal conductivity pumps around the entire circumference are prevented by a cylindrical ring 7,

The purpose of the invention is to increase the re-on which does not affect the uneven working life by preventing the expansion of half of the internal

erosion of the collar of the inner casing of the housing 3. And the tightness of the joint (after the horizontal connector of the bearing outside the sealing zone) is shown in the drawing, Q, touching the horizontal pump, longitudinal section 4, is complemented by a seal on

 The centrifugal pump contains the outer-inner surface of the ring 7 blanches case 1 with the inlet and outlet grades, the fact that its coefficient is not the same as the Lipatrub coefficient (not shown) and the linear expansion bar is less than the coefficient of its inner surface.

Renniy case 3 s. horizontal body 3.. . connector 4 and collet 5 on its outer

Claims (1)

surface and sealing gasket Formula 6 of the invention, the latter being placed by shoulders 2 and 5 of bodies 1 and 3. Na-20 A centrifugal pump containing soy is equipped with a cylindrical ring external housing with inlet and outlet 7 mounted on the inner branch pipe and shoulder inner 3 and in contact with the collet.5 beneath the surface, the inner case of the ice, moreover, the cylindrical collar with the horizontal connector and the collar of the colo 7 is made of a material with less than 25 of its outer surface and a sealed thermal expansion coefficient A protective cushion, the latter, than the material of the inner core, is placed between the pins of the bodies, the pus 3. The ring 7 and the cushion 6 are different in that the cavities 8 and 9 are high and low - in order to increase the resource pump pressure operation. 30 preventing erosion of the collar The pump operates as follows. The inner casing is in place of the horizon. By means of high pressure (a full tangent connector, the pump is equipped with a cylinder 8) the inner casing 3 is a pressure-lindrical ring mounted The external case 1 is located in the internal case and in contact with the collar 2 and 5 with the gasket 6.. with a shoulder of the latter, with chi „„ jb When differences occur, the temperatric ring is made from tour between the upper and lower part of the material c. lower odds internal body 3 during the start-up thermal expansion than the material modes of the density of the junction between the floor of the internal body-.