DE208492C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

- ■ Λ! 208492 CLASS 17 /. GROUP

Glandless seal for heat equalizers.

Patented in the German Empire on January 26, 1908.

For heat equalizers,. consisting of one enclosed in a jacket housing Tube bundle, must for the uneven expansion of the. individual parts especially Be taken into account, otherwise defects can easily occur if the connection is rigid and leaks occur.

It is already possible to counteract these evils effectively, to eliminate them the most varied proposals made by the interested experts and the most diverse, pursuing the same purpose. Innovations and fixtures have been recommended. .

In the main one tried to help oneself with the fact that individual tubes or whole Tube bundles together with stuffing boxes were provided to allow free expansion to allow the tubes.

The satisfactory permanent sealing of the stuffing boxes used is but not to achieve and repackaging the same with many circumstances and malfunctions tied together.

Therefore efforts have been made to arrange the stuffing boxes whenever possible to circumvent, and tried the free expansion of the individual parts of thermal equalizers to be reached in other ways.

In the case of heat equalizers without a stuffing box, the individual Tubes bent and both ends rigidly fastened in one and the same frontal base, like this that the tubes expand freely and independently of the enclosing housing can.

In such an arrangement, however, is one. so-called counterflow effective heat-exchanging substances are only possible to a small extent and consequently also the Efficiency of the heat transfer, based on the heating surface unit, is lower than with the pure counterflow heat equalizers. .

Again with other heat equalizers without stuffing boxes, where the pure If the countercurrent principle is preserved, the detrimental effect of the expansion of individuals becomes This sought to avoid parts that between the heat-transferring tube bundles and the jacket surrounding them membranes or resilient tubes of the so-called type Corrugated pipes are installed:

The material of this type of expansion device is used at larger pressure differentials but so heavily used in the heat equalizer that these devices themselves in turn have to be built very extensively in order to have the necessary deflection on the other hand to reach. -

In addition, they offer very considerable resistance to expansion, as for these expansion devices primarily only use metals as building materials can come and this relatively rigid material naturally only within the given elasticity limits may be claimed to allow a permanent change in shape to exclude.

Therefore, the endeavor is to replace these relatively rigid materials to use those that are as flexible as possible.

The present invention avoids the above-described disadvantages of the heat equalizer with metal-to-metal with profitable success. compensation devices.
As can be seen in the accompanying drawing, the heat-equalizing tube bundle is rigidly connected at both ends to the end plates 6 and c.

One or both of the forehead floors are in the

ίο Diameter dimensioned such that, exactly afterwards, they fit into the guide strips d of the shell e , so that, if the upper end base b is connected to the housing, the tube bundle can expand freely regardless of the metal. . .

The sealing of the spaces / and g, which can be thought of as standing under different pressures or filled with different substances, is achieved by placing one or more flexible, elastically stretchable sealing rings on the front floor c by means of the outer guide ring. h and at the same time connected to the jacket e between the flanges i and k , so that there is no open connection between the spaces f and g ..

The guide ring h is on the outer circumference. start in a similar way to the end base c in the guide strip m of the cover I. In this construction, when the tubes expand, the movable base c or the ring h shifts, the elastic body η being pushed from one side of its central position to the other side, ie initially being bent and finally being subjected to tension.

In order to prevent cutting or shearing of the elastic body -n , the edges of the guide strips are d, m as well as the. of the movable rings c, h designed round on the side facing the elastic body η.

Claims (1)

Patent claim: Stuffing sleeveless seal for heat equalizers, characterized in that one or more end plates, which are rigidly connected to the heat-exchanging tubes or the like, "on the outer circumference are guided in the surrounding jacket housing, so that the jacket and tube bundle the different expansions according to each other freely -stretching ■ can during the remaining narrow annular gap closed in the way by a sealing ring made of elastic material is that this sealing ring by a. Fastening ring that doubles as a guide in the jacket cover can serve, on the front base, but is attached to the outer circumference between the housing jacket and the cover flange, so so that there is no open connection between the two sides of the end base. 1 sheet of drawings.