US1923320A - Generator hook-up - Google Patents

Description

GENERATOR HOOK-UP Filed DeC. 2l, 1929 Patented Aug. 22,1933

'UNETED STATES GENERATR HOOK-UP Henry J. Mastenbrook, Cleveland, Ohio, assigner to The SwartWoutCompany, Cleveland, Ohio, a.

Corporation of Ohio Application DecemberjZl, 1929 Serial No. 415,715

18 Claims.

This invention relates to pressure generators and more particularly to an improved hook-up for generators of the general class described and claimed in the United States patent to Copley, No. 1,193,125, issued August 1st, 1916. l -In the operation of steam boilers vand other power plant equipment such as steam traps vand the like, i it is frequently desirable to actuate diaphragm. type valves by fluid pressure which varies with variations in the liquid level in a container. Copley discloses a pressure generator adapted to span the waterlevel of a container and to generate a pressure which varies with the water level. f

It is among the objects of my invention to provide apparatus for connecting a pressure generator of the general type disclosed by Copley to a. boiler or the like which will permit the generator to be raised or lowered either-with or without tilting its longitudinal .axis and without vdisconnecting the generator conduit from the container; to provide ag'enerator hook-up whereby the hot water in the generator may be `blown down without blowing out the cool water in the conduit below the generator; to provide a generator hook-up which is easily adjusted, which may be blown ydown without interfering with its efiicient operation except during the actual blowing down operation,'and which is of ruggedand 'eflicient design.

The above and other objects of my invention will appear from the following description of a preferred form or" my generator hook-up, reference being had to the accompanying drawing in which: ff l Y Fig. l is an end'elevation of the generator hook- -up -appliedto the end of a steam boiler drum; and Fig. 2 is a side elevation of the apparatus illustrated in Fig. l.

The-operation of the generator in mypresent invention is substantially the same as the gene'ryartor of the Copley patent referred to above and will be but briefly described herein. AThe twin generators 1 and 2 are supported by the section 3 of the conduit which spans the boiler water level L-L. The twin generators 1 and 2 are made up of the inner pipes 4 and 5 vwhich are connected at` their upper and lower ends to the conduit section/'3, tubular shell portions 6, and radiating fins 7. The shell portions 6 surround the pipes 4-and 5 and contain a volatile fluid such as water. `When the generators are in the position illustrated and the boiler is in operation the pipes 4 and 5 will contain water up to the boiler water level and steam above this level. Y

' As the boiler water level varies, the level in the pipes 4 and5 will vary correspondingly and the volatile fluid within the shells 6 will be heated to a degree depending on the water level in the pipes 1i and 5. Thus the pressure generated bythe volatile fluid will vary with the boiler water level. The shells 6 are connected at their lower ends by a tube 3 and a pressureconducting tube 9 may lead from the shells 6 to the diaphragm chamber l0" of alfieed water Valve or the like.

As best seen in Fig. 1, the pipes 4 and 5 are 65 bent into downwardly extending U-shaped portions 1l below the generators '7. The object of this construction is to prevent internal circulation of hot water in the generators. In generators not equipped with these drop leg sections the steam which condensers in the conduit 3 forms .a column, of hot Water which will eventually fill the conduit 3 down to the lower connections of the inner Vgenerator pipes and then pass outwardly intol the generators. As the difference in temperature between the steam and water in the generatorsV is a vital factor in their eicient operation this flow of hot water into the generators is undesirable." ByV providing the U-shaped` pipe portions l1, t`ne'hot condensate which forms in 80 conduit 3 cannot displace the cool water in the downwardly extended U shaped pipes 1l and the operation of the generators will not beA affected by hot condensate rising into the generators.

The upper end of conduit section 3 is connected 85 to the lower end of the upper conduit section l2 by a shorter pipe 13 in which is interposed a union 14. This union 14 may be of any desired and suitable type and its purpose is to allow. relative swinging movement between the conduit sections 3 and 12. When the'union 14 is loosened the conduit sections may be moved relative to each other. When the union 14 is tightened the conduit sections will be held in the desired position and a rigid pressure tight connection will be secured.

.A shut-ofi valve 15 at the upper end of the conduit section 12 provides means for shutting off the has a similar function in that it provides an adjustable connection between the conduit section 2 and the boiler drum 16.

At Vthe lower end of the conduit section- 3 is a 105 T-connection to which is attached the blow down rpipe 19 and the-connecting pipe 20. Included in the pipe 20 is a union 2l. The cooler conduit 22 is connected to the'end of the pipe 20 Vand the union 21 permits Veasy variation of the anglebe-` 110 tween the generator conduit section 3 and the cooler section 22. Y

The cooler section 22 may consist of an enlarged tubular portion 23 having radiating ns 24 as shown in Fig. 1. The object of this cooler is to cool the hot boiler water before it enters the generators 1 and 2 so that the diierence in temperature between the steam in the upper-parts of the generators and the water in the lower parts will be great enough to give the proper pressure generating action.

vAn adjustable connection between the cooler section 22 and the lower conduitsection 25 is provided by the short pipe 26 and the union'2'? in the same manner as above described in regard to the connections between the other `conduit sections. The end of section 25 is connected to a shut-'off valve 28 which is attached to the boiler ,drum 1 by a pipe 29 and union 30 in the same way as the upper conduit 12. The valve 28 permits the conduit to be shut off from the lower part of the boiler when desired.

The generator blow down valve 31 is placed in the blow-down pipe 19 below the T-connection. 'Ihis valve may be of any suitable type, the one illustrated being an ordinary hand-operated valve,

and is normally kept closed during the operation of the boiler. When, however, air becomes entrapped in the generators or they become iilled with scale, etc., it is desirable to blow them out. This is done by closing the valve 28 and opening the valve 31, permitting steam to blow through the generators and thoroughly clean them. As

the cooler 23 is lower than the point where the conduit 22 joins the conduit 3, the cool water in the cooler and the lower part of the conduit system will not be discharged. When the blow-down valve 31 is closed and the shut-oil valve 28 opened at the completion of the blow down operation, the cool water from the cooler 24 will rise to boiler level in the conduit 3 and the inner pipes 4 and 5 of generators 1 and 2 and the generators will immediately be readyfor operation.

In' the above description and the drawing it will be seen that mygenerator hook-up provides means for connecting generators ofthe class described to boilers and the like so that their vertical position and the angle of theiraxis may be readily varied to'suit different conditions. I have also provided a hook-up in which the generators can be quickly and easily blown down without disturbingA the cool water in the cooler. Although I ave illustrated and described but one form of duit swivelly connected to said second section and inclinedV downwardly with respect thereto having a cooler associated therewith, a section of conduit swivelly connected at one end to said third section and at* the other end to the boiler, a discharge valve between said second and thirdsections and lshut-off valves at the ends of said conduit adjacent the boiler.

2. A generator hook-up comprising a sectional conduit connected to span the liquid level of a lvertically without liquid container, a generator on said conduit, swivel means for connecting the sections of said conduit, said sections being swingable to allow said generator to be moved vertically without changing its angular relation to the horizontal and a blow-down valve at the lower end of said generator.

3. A generator conduit comprising a plurality of pivotally connected sections, a generator on one of said sections, a cooler on the section adjacent and below said generator section, said two last mentioned sections being connected together at adjacent ends, said last mentioned section being inclined downwardly with respect to the generator section, a section pivotally connecting the generator section to a liquid container, a section pivotally connecting the cooler section to the liquid container, a blow-down valve between said generator and said cooler and a shut-olf valve between said last named conduit section and said liquid container.

4.v In a pressure generator hook-up the combination of a conduit` comprising at least four pivotally connected sections adapted to be connected to a liquid container and spanning the liquid level in the same, a generator comprising an inner pipe and outer shell, means for connecting the upper end of said inner pipe to one section of said conduit, means including a drop leg pipe section'forconnecting the lower end of said inner pipe to said conduit section, and a cooler on a conduit section below the generator carrying conduit section, said cooler and the section on which it is mounted being inclined downwardly with respect to the section with which said generator is associated, a generator blow down valve between said generator and cooler, and a shut oir valve in one of said sections and disposed between said cooler and the liquid container, the pivotal mounting of said sections permitting verticaladjustment of the position of the generator without changing its horizontal position.

5. In a pressure generator hook-up the combination of a conduit comprising at least four pivotally connected sections, a generator comprisingan inner pipe and an outer shell, means for connecting the upper end of said inner pipe to one section of said conduit, means including a drop leg pipe section for connecting the lower end of said inner pipe tosaid conduit section, a cooler on a conduit section below the generator carrying conduit section and being inclined downwardly with respect to said kgenerator carrying conduit section and a generator blow-down valve between said generator andv said cooler, and aV shut-off valve in one of said sectionsr and disposed adjacent the end of said cooler remote from said generator, the pivotal mounting of said sections permitting vertical adjustment of the position of the generator without changing is horizontal lposition.

A6. The combination with a boiler, of a sectional conduit comprising pivotally ,connected sections spanning the water level of the boiler, a generator mounted on one of said sections, a cooler associated with another of said sections, the upper end of the section having the cooler associated therewith being connected to the lower end of the section having said generator associated therewith and being disposed entirely below said last mentioned section, said generator being movable Y vchanging its angular relation to the horizontal. l

7. In a pressure generator hook-up the combination of a iiuid conduit comprising at least four 1r pivotally connected sections, a' generator com-- prisingan inner pipe and outer shell, means for connecting the upper end of said inner pipe to one section ofA said' conduit, means including a drop leg pipe section Vfor connecting the lower end said sections permitting vertical adjustment of the generator without changing its angular position.

8. A generator hook-up for a boiler comprising a section of conduit swivelly connected to a boiler above the water level, a section of conduit swivelly connected to said rst section and having a pressure generator mounted thereon and having a blow-down valve at the lower end thereof, whereby the generator line may be opened to pass a. scavenging flow of steam through the generator, a section of conduit swivelly connectedv to said section and inclined downwardly with respect thereto and having a cooler associated therewith, a section of conduit swivelly connected at one end to said third section and at lthe other end to the boiler, a shut-off valve at the end of said last named section adjacent the boiler adapted to be closed when said blow-down valve is opened to allow steam to pass through said Y second named section of pipe and said generator without disturbing the Water in the cooler which may thereafter be allowed to rise in the generator;

9. A method of scavengng a pressure generator of the class described and restoring the same to a condition substantially the same as that existing previous to the scavenging` operation which consists in passing a scavenging flow of steam through the generator, isolating a volume of cooling iluid in a portion of the generator line and permitting the uid to rise in the generator at the termination of the scavenging operation.

l0. In combination witha boiler, a pressure generator, means for mounting said generator on said boiler so that said generator may be adjusted vertically without changing the angular relation thereof with respect to the horizontal, said means comprising a plurality of sections swivelly connected and relatively movable one with respect to the other, certain of said sections being swivelly connected to the boiler.

11. In combination with a boiler, a generator mounted to span the water level thereof and being adjustable vertically without changing the angular relation thereof with respect to the horizontal, means for mounting said generator on,A

said boiler, said means beingpivotally connected to said boiler and being rotatable in a plane normal to the water level, said means forming a part of a fiuid conduit spanning the normal water level of the boiler. i

l2. In combination with a boiler, a generator hook-up comprising a section of conduit swivelly connected to the boiler at a point above the water level and in iiuidic communication therewith, a second section of conduit open at one end swivelly connected to the rst section of conduit and in fluidic communication therewith, said second section having a pressure gen- 'erator VmountedV thereon spanning the normal water level 4of the boiler, and a valve at the lower end thereof for controlling the passage of iiuid traversing the generatorY through the open end of the conduit section, 'athird conduit swivelly connected to said second conduit and vin iiuidic communication therewith and inclined .downwardly with respect thereto and in fluidic communication therewith, said last named pipe section having a cooler associated therewith, a

fourth conduit swivelly connected to the last named conduit and in uidic communication therewith and swivelly connected to the boiler below the normal water level and in fluidic communication therewith, said pipe sections being adjustable to varying angular position without substantially changing the positional relation between the generator and cooler or the angular position of the generator with respect to the normal water level in the boiler, said last named pipe section having valve means for precluding the passage of iiuid in the cooler through the outlet when the valve in the second conduit is opened to pass iluid through the generator.

13. A method of blowing down a pressure generator of the class described and restoring the same to a condition substantially the same as that existing previous to the blowing down operation which consists in passing a volume of iluid through the generator, isolating a volume of fluid from the boiler and the generator and passing the tiuid thus isolated to the generator after the blowing down operation.

14..In a pressure generator hook-up, the combination of a conduit comprising at least four pivotally connected sections, a generator comprising an inner pipe and an outer shell,'means for connecting the upper end ofthe inner. pipe to one section of the conduit, and means including a drop leg pipe section for connecting the lower end of the inner pipe to the conduit, the pivotal mounting of said sections permitting vertical adjustment of the generator without disturbing the angular position thereof to the horizontal.

15. In a generator hook-up the combination of a sectional conduit connected to span the liquid level of a container, a pressure generator, means vfor connecting the upper end of said generator to said conduit, means including a drop leg pipe section for connecting the lower end of said generator to said conduit, said sectional conduit being comprised of a plurality of sections pivotally connected together in such a manner as to permit said generator and drop leg pipe section `to be moved vertically upon pivotal adjustment of said sections without changing the angular relation of said generator and drop leg to the horizontal.

16. A generator hook-up for boilers comprising a sectional conduit swivelly connected to a boiler above and below the water level, said conduit comprising four swivelly connected sections including an intermediate pair of sections, a pressure generator mounted on one of said intermediate sections, a cooler mounted on anotherV section of said conduit, a discliargevalve in said conduit between said generator and said cooler, and shut-off valves at the ends of said conduit adjacent the boiler.

17. A generator hook-up comprising a sectional conduit connected to span the liquid level of a to each other, and a pressure generator mounted on one ot said sections in said inner pair, said sections beingswingable to allow said generator to be moved vertically Without changing its angular relation to the horizontal, and to allow said generator to be angularly adjusted with relation to the horizontal Without changing its vertical position. v

18. A generator hook-up comprising a sectional conduit connected to span the liquid level of a container for water and steam, comprising an

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