US1794135A - Condenser - Google Patents

Description

Patented Feb. 24, 1931 UNITED STATES PATENT AoFl-ICE PAUL A. BANCEI, O1? MONTCLAIIR, NEW JERSEY, ASSIGNOR T0 INGERSOLL-MND COM- IPAN'Y, 0F JERSEY CITY, NEW JERSEY, A CORPORATION 0F NEW JERSEY CONDENSER Application iled December 18, 1929. Serial No. 414,962.

This invention relates to condensers, but' more particularly to a flexible joint adapted to be interposed between sections of the condenser casing.

One object of the invention is to permit of expansion and contraction of the elements to which the condenser is attached, such as turbine nozzles without necessitating the use of flexible couplings at the turbine nozzles.

The condenser of this invention is particularly adapted for use with a double flow turbine having a central steam inlet in which the steam enters at a very hi h temperature for instance 700-750 This means that the center part of the-turbine barrel is at a corresponding temperature. On a single flow turbine, the exhaust end is doWelled and movement due to changes in temperature occurs at the steam inlet end on some form of greased guides. This, of course is not possible with a double iow turbine and movement must be taken up laterally by and in which similar reference characters` refer to similar parts,

Figure 1 is a longitudinal sectional elevation of a condenser constructed in accordance with the practice of the invention, and

, Figure 2 is a transverse view of a detail taken through Figure 1 on the line 2--2 looking in the direction indicated by the arrows.

Referringmore particularly to the drawings, A designates a casing comprising in this instance two sections B and C, each of which has an inlet opening D' for steam and an outlet opening E for condensate. The casing A is shown as being supported by nozzles ,F which may form a part of a center inlet turbine (not shown) and through which the steam from such turbine or similar machine iows into the sections B and C.

The condenser may be of the single pass type and is provided'with tubes G which exv tend longitudinally of the-casing and transversely of the directionof stea iiow. The tubes G are supported intermediate their ends by support sheetsH andare fixedly secured at the ends to tube sheet's J, as for instance by expanding the ends of the tubes into the tube sheets.

In the construction shown, the tube sheets J also serve as closures for water boxes K and L which may be substantially symmetrical. One box, as for instance the box L, may serve as an inlet box into which the cooling water is introduced through inlet openings O. The box K serves as an outlet box having'outlet .openingsP through which the cooling water flows from the water box K. Both boxes K and L may be divided into two compartments by walls Q, interposed between the openings of the boxes.

In. accordance with the present invention, means are providedfor permitting the expansive and contractile movement of the turbine nozzles F and corresponding relative move'- ment of the casing sections. This means comprises a iexible band interposed between the adjacent ends of the sections B and C which are suitably spaced with respect to eachother. The band R thus forms a portion of the casing A. In cross section the flexible band R may be Substantially U-` shaped. The straight legs S of the band are adapted to lie fiush against the ends of the sectlons B and C and may be conveniently clam ed thereto by clamping rings -T which may e secured to the ends of the sections in any suitable way.

Similarly, between the outer ends of the sections B and C and the tube sheets J' are interposed flexible bands R which are held securely in position by clamping rings T.

From the foregoing it will be seen that any expansion or contraction which may take Aplace between the nozzles 'F will not cause strains in the condenser shell. Likewise, ex-

C and the turbine nozzles F will not impose a strain on the tubes G, since any lateral vmovement of the sections B and C will react only on the iiexible bands R..

Inasmuch as the tubes are constantly filled with coolingliquid and are of different material they will not expand or contract in the same degree as the portions comprising the casing of the condenser. Due to this fact it is desirable that the means, such as the tube sheets J to which the tubes are fixed be capable of adjustingtheir positions relatively to the sections and also relatively toeach other. Otherwise the joints ,between the tubes and the tube sheets may become bent or loosened or the .tubes may become bent or broken, particularly where they lhave been previously weakened by"c'orrosion. In order therefore to enable the water boxes K and L to adjust their positions to compensate for any variation in the lengths of the tubes, said water boxes are provided with separate supporting means in the form of bearings U which in turn may be mounted on supports V located at a lower level than the means, such as a floor (not shown) whereby vthe turbine is Ysupported.

The bearings U may be in the form of plates provided at opposite ends with side walls W having integral introverted flan es X which overlie lateral Han es Y carried y the water boxes K and L. eans, such as rollers Z, are interposed between the bearings U and the bottom of the water boxes to support the weight of the Awater boxes and also to enable said boxes to move readily with respect to the sections in accordance -with the degree of expansion or contraction of the tubes G.

In practice the present invention has been found to function in an unusually eiiicient manner. It enables the casing A and the tubes G to expand in variable degrees without y subjecting one element to the strains induced by the movement of another element.

I claim 1. In a surface condenser, a casing com` prising a plurality of sections each having an inlet for steam,and a flexible joint between the sections to permit relative movement of the steam inlets.

2. In a surface condenser, a casing comprising a pluralit of sections adapted to be suspended from t e same support, each sec'-A tion having an inlet for steam, and a -flexible joint between'thesections to permit relative movement ofthe steam inlets.

3. In a surface condenser, a casing comprising a pair of sections spaced with respect to each other and adapted to be suspended from a common support, and a flexible joint connected toadjacent ends of the sections and forming aportion of the casing.

4. In a surface condenser, al casing comprising a pair of sect1ons, water boxes at the `ment of the sections and iexible joints between the sections and the water boxes to permit movement between the sections with respect to the water boxes.

5. In 'a surface condenser, a casing comprising a pair of sections, Water boxes at the outer ends of the sections, tube sheets .carried by the water boxes, cooling tubes in the casing and connected at their ends to the tube sheets, a flexible joint between the sections to permit movement of one section with respect to another, and flexible joints between the sections and the tube sheets to permit relative movement of the tubes and the sections. l

6. In a surface condenser, a casing comprising a pair of sections, water boxes at the outer ends of the sections, tube sheets carried by the water boxes, cooling tubes in the casing and connected at their ends to the tube sheets, a fiexible joint between the sections to permit relative expansive and contractile movement of one section with respect to another, flexible joints between the sections and of expansion of the tubes and the sections, and means disassociated from the casing and the casing support to support the water boxes.

7 In a surface condenser, a casing comprising a pair of sections, water boxes at the outer ends of the sections, tube sheets carried by the water boxes, cooling tubes in the casing and connected at their ends to the tubesheets, a flexible joint between the sections to permit expansive and contractile movement of one section with respect to another, flexible joints between the sections and the tube sheets to permit of variable degrees of expansion of the tubes and the sections, bearings disassociated from the casing and its support t support the water boxes, and means interposed between the water boxes and the bearings to permit of endwise Inovement of the Water boxes on the bearings.

8. In a surface condenser, a, casing comprising a pairlof sections, water boxes at the outer ends of the sections, tube sheets carried by thewater boxes, cooling tubes in thecasing and connected at their ends to the tube sheets, a iexible joint between the sections Ato permit expansive and contractile movement of one section with respect to anprising a pair of sections adapted to be suspended from a common sup port, each section having an inlet for steam, water boxes at the outer ends of the sections, a iexible joint between the sections, and flexible joints between the sections and the water boxes to permit movement of the sections relative to each other and to the water boxes.

10. In a surface condenser, a casing comprising a pair of sections, water boxes at the outer ends of the sections, tube sheets forming closures for the water boxes, cooling tubes in the casing connected at their ends to the tube sheets, a flexible connection between adjacent ends of the sections, and fiexible connections between the sections and the tube sheets` to permit of relative expansion of the casing sections and the cooling tubes.

11. In a surface condenser, a casing comprising a pair of sections, water boxes at the outer ends thereof, a lexible joint between j said sections to permit of relative movement of the sections, exible joints between .the sections and the water boxes to permit movement therebetween, and means disassociated from the casing and the casing support to support the water boxes.

12. In a surface condenser, a casing comprising a pair of sections in endwise relationship flexibly connected at their adjacent ends, water boxes flexibly connected to their outer ends, and means independent of the casing to support the water boxes.

13. In a surface condenser, a casing comprising a pair of sections in endwise relationship flexibly connected at their adjacent ends, steam inlets into each section, water boxes iexibly connected to their outer ends and means independent of the casing for supporting the water boxes.

In testimony whereof have s igned'this l specification.

' PAUL A. BANCEL.

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