DE7001220U - DEVICE FOR REMOVING Gland Packings from FITTINGS - Google Patents

Description

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Klein, Schanzlin A Becker Corporation

Device for removing stuffing box packing rods

Armatures

The invention relates to a device for expanding Stuffing boxes on valves, their spindles as a means of making it possible the exchange of the stuffing box packing when the line is under pressure aiit one with the valve body cooperating sealing device are equipped.

g The exchange of stuffing box packings in steam and fltis

ψ sigkeits-leading aggregates requires a relatively high

<"Expenditure of time. In particular, the expansion of the pack is with

Difficulties associated, as the packing rings individually

ί must be pulled out of the seal chamber · When using

such fittings in reactor circuits but must because of

f the risk of radiation in an uncomplicated and quick way

, i value replacement of the stuffing box packing.

The invention is based on the object of creating a device that enables rapid and unproblematic exit. construction of stuffing box packings on valves permitted · This is achieved according to the invention in that a chamber ring is provided below the gland packing, which over one connection and one running in the fitting housing Channel is to be connected to a hydraulic or pneumatic pressure transducer.

The subject matter of the invention is based on the known Pressure rings for stuffing box packings that, from above with a Pressure applied, a uniform compression of the Effect packing rings. In contrast to the previously known devices, the subject of the invention is the pressure effect a chamber ring loaded with a pressure medium from below used to push out the stuffing box packing

The invention is explained in more detail using an exemplary embodiment

1 shows a stuffing box packing equipped according to the invention, in Fig. 2 shows the stuffing box packing during the dismantling process, and in 3 shows a further gland packing designed according to the invention, in which a hard material sealing ring is used instead of a base sleeve is built in *

The stuffing box shown in Figs. 1 and 2 and in Fig. 3 » packs are installed in a fitting housing 1} they each enclose a spindle 2, which during the exchange the stuffing box packing is pulled against a sealing seat 1a. The stuffing box is made up of the individual rings 5, which are screwed onto bolts 8 via a pressure piece 6, a gland follower and washers 10 and 11 Nuts 9 are pressed together. In the housing 1 there is the screw connection 16, in which one when removing the pack Compressed air or hydraulic fluid line is screwed in.

• · · 4

The connection 1b is connected via a channel to a chamber ring k which, in the exemplary embodiment in FIGS. 1 and 2, is supported against a base sleeve 3 provided with a groove.

In the embodiment shown in Pig.3 execution of the basic sleeve is in place a provided with a groove base ring 13 is used, which is supported, in turn, against a hard material seal "\ k. Such a hard material seal ring is used there, where it can be expected to dirt attack or where a Sealing device 1a is dispensed with.

When removing the stuffing box packing, as shown in Fig. 2, first screw the pressure line into connection 1b. Then the gland follower 7 and the pressure piece 6 are removed. The pressure medium is now passed into the chamber of the chamber ring h via the connection 1b. The pressure medium reaches the groove of the base sleeve 3 or of the base ring 13 via the chamber ring h , which is open at the bottom.

As soon as the pressure building up is sufficiently high, the entire stuffing box packing is pushed up and out of the sealing chamber. The individual packing rings can easily be removed. The pressing-out process is ended as soon as the chamber ring k has reached the upper edge of the sealing space.

Claims (1)

Claim Device for removing stuffing box packings on valves, the spindles of which are equipped with a sealing device cooperating with the valve body to enable the stuffing box packing to be replaced when the line is under pressure, characterized in that underneath the stuffing box packing (5) © in. Chamber ring (k) is proposed, which is to be connected to a hydraulic or pneumatic pressure transducer via a connection (1b) and a channel running in the armature housing (1).