GB2065252A

GB2065252A - Gastight lead-in device, particularly for bulkheads

Info

Publication number: GB2065252A
Application number: GB7942502A
Authority: GB
Original assignee: Individual
Current assignee: Individual
Priority date: 1979-12-10
Filing date: 1979-12-10
Publication date: 1981-06-24

Abstract

A device for use in a gastight lead-in through a bulkhead or other separating wall (1) has a compressible two-part gasket (6, 6') between a tube piece (2) which is inserted in the wall in a gastight manner, an insert (3) which is formed with an axial bore (4), and flanges (7, 7a) which are attached to the ends of the insert. <IMAGE>

Description

SPECIFICATION Gastight lead-in device, particularly for bulkheads This invention relates to a device for gastight lead-in for bulkheads and similar separating walls, in which in a hole in said wall there is inserted a tube piece in gastight manner which takes up a circular insert with axial bore, as well as a gasket arranged between the tube piece and the insert which is again formed with axis-parallel, threaded blind bores for fixing a flange at either side of the insert and the end surfaces of the tube piece and are provided with a neck to be connected with the tubes.

It is previously known to introduce tubes of different kind through bulkheads. However, the known lead-ins have had several disadvantages, firstly because in the long run it has been difficult to keep the lead-ins gas- and watertight, and secondly because the lead-in causes disturbing noise thereby that metal contacts metal.

Furthermore, until now it has been necessary to weld the tubes to the flanges, which results in rigid connection without possibility for movement axially and radially when the tubes expand at rising temperature.

The object of the invention is to provide a gastight lead-in of the above mentioned kind, which besides being gas-and watertight is also noiseless.

This is solved according to the invention by that the gasket is divided in two parts and provided with a flange portion and a tube-shaped portion to be introduced into the circular space between the tube piece and the insert, and with the flange portion abutting the tube piece and the flange.

Thereby is not only obtained a complete tightening but also a noiseless lead-in, since metal rests against the resilient material of the gasket.

The total axial width of the ring-shaped portions of the gaskets is preferably greater than the axial length of the circular space.

Consequently, the ring-shaped portions of the gaskets will be pressed together and completely fill the circular space.

Furthermore, the advantage is obtained that the single components are easy to assemble, and that the gaskets can be quickly replaced.

An embodiment of the invention is shown in the drawing, in which: Fig. 1 shows an axial section along line I-I in Fig. 2 with some of the components in exploded view, and Fig. 2 shows the lead-in as seen against one end of the insert, as shown by line Il-Il.

The bulkhead through which the lead-in is to be arranged, is numbered 1. Said bulkhead has a through-hole taking up a tube piece 2 which is inserted in gastight manner and comprises an insert 3 with gaskets 6, 6' arranged between the tube piece 2 and the insert 3, which insert has a through-axial bore 4 and is at each end provided with a number of axis-parallel, threaded blind bores 5 and 5'. Said threaded bores take up screws 12 and 12' respectively for fixing of flanges 7, 7a, 7b, respectively, provided with through-holes 9 and 9' respectively. The right flanges 7 is provided with a neck 8 with bore corresponding with the bore 4 and is provided with inner threads for a tube 1 3. The left flange consists of a ring 7a and a sleeve 7b with collar, so that said sleeve can be turned in the ring 7a.

The free end 8' of the sleeve 7b is formed with outer concentric grooves for a hose 13' which is kept in place by a hose clamp 14'. Between the flange 7 and the insert 3 and between said insert and the sleeve 7b there are arranged 0tightenings 10 and 10' which are resting in slots, as shown.

The ring-shaped portions 6b and 6'b, respectively, of the gaskets are together broader than the axial length of the insert 3. The flange portions 6a and 6'a respectively, have together a greater axial length than the difference between the axial length of the insert 3 and the tube piece 2. Thereby is obtained that the gasket will be strongly pressed together and give a perfect tightening between the tube piece 2 and the insert 3 and between the tube piece and the flange 7 and ring 7a, respectively when the screws 12, 12' are inserted through the holes 9, 9' in the flange 7 and the ring 7a respectively, and tightened.

Whereas the flange 6'a of the left gasket is only directed outwardly, the flange 6a of the right gasket is directed outwardly as well as inwardly so that perfect tightening is obtained, in which case the O-ring 10 on the right side may be deleted.

1. A device for a gastight lead-in for a bulkhead or other separating wall, in which in a hole in said wall there is inserted a tube piece in a gastight manner which takes up a circular insert with an axial bore, as well as a gasket arranged between the tube piece and the insert which is again formed with axis-parallel, threaded, blind bores for fixing a flange at either side of the insert and the end surfaces of the tube piece and are provided with a neck to be connected with the tubes, characterized in that said gasket is divided in two parts and provided with a flange portion and a tube-shaped portion and arranged to be introduced with the tube-shaped portion into the circular space between the tube piece and the insert, and with the flange portion abutting the tube piece and the flange.

2. A gasket for use in a lead-in device through a separating wall, the gasket comprising two parts each of which comprises a tube-shaped portion arranged to be introduced into an annular space between a tube piece which is secured in the wall and an insert which has a through bore and is accommodated in the tube piece to carry connecting flanges, and a flange portion arranged to be sandwiched between an end of the tube piece and one of said flanges.

3. A device as claimed in Claim 1 or a gasket as claimed in Claim 2, in which the total axial width

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Gastight lead-in device, particularly for bulkheads This invention relates to a device for gastight lead-in for bulkheads and similar separating walls, in which in a hole in said wall there is inserted a tube piece in gastight manner which takes up a circular insert with axial bore, as well as a gasket arranged between the tube piece and the insert which is again formed with axis-parallel, threaded blind bores for fixing a flange at either side of the insert and the end surfaces of the tube piece and are provided with a neck to be connected with the tubes. It is previously known to introduce tubes of different kind through bulkheads. However, the known lead-ins have had several disadvantages, firstly because in the long run it has been difficult to keep the lead-ins gas- and watertight, and secondly because the lead-in causes disturbing noise thereby that metal contacts metal. Furthermore, until now it has been necessary to weld the tubes to the flanges, which results in rigid connection without possibility for movement axially and radially when the tubes expand at rising temperature. The object of the invention is to provide a gastight lead-in of the above mentioned kind, which besides being gas-and watertight is also noiseless. This is solved according to the invention by that the gasket is divided in two parts and provided with a flange portion and a tube-shaped portion to be introduced into the circular space between the tube piece and the insert, and with the flange portion abutting the tube piece and the flange. Thereby is not only obtained a complete tightening but also a noiseless lead-in, since metal rests against the resilient material of the gasket. The total axial width of the ring-shaped portions of the gaskets is preferably greater than the axial length of the circular space. Consequently, the ring-shaped portions of the gaskets will be pressed together and completely fill the circular space. Furthermore, the advantage is obtained that the single components are easy to assemble, and that the gaskets can be quickly replaced. An embodiment of the invention is shown in the drawing, in which: Fig. 1 shows an axial section along line I-I in Fig. 2 with some of the components in exploded view, and Fig. 2 shows the lead-in as seen against one end of the insert, as shown by line Il-Il. The bulkhead through which the lead-in is to be arranged, is numbered 1. Said bulkhead has a through-hole taking up a tube piece 2 which is inserted in gastight manner and comprises an insert 3 with gaskets 6, 6' arranged between the tube piece 2 and the insert 3, which insert has a through-axial bore 4 and is at each end provided with a number of axis-parallel, threaded blind bores 5 and 5'. Said threaded bores take up screws 12 and 12' respectively for fixing of flanges 7, 7a, 7b, respectively, provided with through-holes 9 and 9' respectively. The right flanges 7 is provided with a neck 8 with bore corresponding with the bore 4 and is provided with inner threads for a tube 1 3. The left flange consists of a ring 7a and a sleeve 7b with collar, so that said sleeve can be turned in the ring 7a. The free end 8' of the sleeve 7b is formed with outer concentric grooves for a hose 13' which is kept in place by a hose clamp 14'. Between the flange 7 and the insert 3 and between said insert and the sleeve 7b there are arranged 0tightenings 10 and 10' which are resting in slots, as shown. The ring-shaped portions 6b and 6'b, respectively, of the gaskets are together broader than the axial length of the insert 3. The flange portions 6a and 6'a respectively, have together a greater axial length than the difference between the axial length of the insert 3 and the tube piece 2. Thereby is obtained that the gasket will be strongly pressed together and give a perfect tightening between the tube piece 2 and the insert 3 and between the tube piece and the flange 7 and ring 7a, respectively when the screws 12, 12' are inserted through the holes 9, 9' in the flange 7 and the ring 7a respectively, and tightened. Whereas the flange 6'a of the left gasket is only directed outwardly, the flange 6a of the right gasket is directed outwardly as well as inwardly so that perfect tightening is obtained, in which case the O-ring 10 on the right side may be deleted. CLAIMS

3. A device as claimed in Claim 1 or a gasket as claimed in Claim 2, in which the total axial width of the tube-shaped portions of the gasket is greater than the axial length of the circular space.

4. A device for a gastight lead-in for bulkheads and similar separating walls, substantially as hereinbefore described with reference to the accompanying drawings.

5. The features herein described, or their equivalents, in any novel selection.