US1304480A - Sttpebhbateb construction fob boilebs - Google Patents

Description

.I. H. HINMAN.

SUPERHEATER CONSTRUCTION FOR BOILERS.

APPLICATION FILED APILZB. I917.

Pzitented May 20, 1919.

5 SHEETS-SHEET I J. H. HlNMAN.

SUPERHEATER CONSTRUCTION FOR BOILERS,

APPLICATION FILED APR. 23. 1911 1,304,480 Patented May 20, 1919.

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J. H. HINMAN.

SUPERHEATER CONSTRUCTION FOR BOILERS.

APPLICATION FILED APR. 28. I917 Patented May 20, 1919.

5 SHEETS-SHEET 3 J. H. HINMAN.

SUFERHEATER CONSTRUCTION FOR BOILERS.

APPLICATION FILED APR. 28. 1917.

1,304,480. Patented May 20, 1919.

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SUPERHEATER CONSTRUCTION FOR BOILERS.

APPLICATION FILED APB-28. 1911.

Patented May 20, 1919.

5' SHEETS-SHEET 5 falzl n HHin/mwm U ITED STATES PATENT OFFICE.

JOHN H. HINMAN, or PHOENIXVILLE, PENNSYLVANIA, nssrfiiNon, IBY MESNE ASSIGNMENTS, TO HEINE SAFETY BOILER COMPANY, or rnoENIxvrLLE,

PENNSYLVANIA.

' surnnnna'rnn CONSTRUCTION FOR onmns;

Specification of Letters Patent. Patented play 20, 1919,

Application filed Apri128, 1917. Serial No. 165,060.

,To all whom it may concern Be it known that I, JOHN H. .HINMAN, a citizen of the United States, residing at Phoenixville, State of Pennsylvania, have invented certain new and useful Improvements in Superheater Construction for Boilers, of which the following is a specification.

My invention consists of an improved superheater construction for boilers. One obj ect of my invention is to provide a super heater construction which will be especially adapted for use in connection with water tube boilers.

Another object is to rovide a water tube boiler with a super eater construction whereby the superheater chamber and superheater will be located in the midst of the space between the water tubes and through which all of the hot products of combustion from the-furnace travel.

Another object is torovide the superheating chamber with a amper for regulating the amount of products of combustion passin therethrough, thus regulatin the degree an l pressure of the superheat steam.-

A further object is to provide a novel arrangement of the superheating elements which extend into said chamber andthus cause the steam passing therethrough to be eifectivel heated.

A further object of my invention is to so arrange the controlling damper for the superheating chamber that it will not be engaged by the products of combustion until they have passed through the superheatmg chamber where their heat will be less intense. Hence. I am able to use a cast iron or other metallic damper for the controlling purpose above enumerated. These objects. and other advantageous ends which will be described hereinafter, I attainin the following manner, reference being had to the accompanying drawings in which Figure 1 is :1V longitudinal section through a water tube boiler having m invention illustrated in connection therewit the water legs, tubes, and drum being; shown in outside vie Fig. 2 is a section on the line 22 of Fig. 1.

Fig. 3 is an elevation with the side wall in the county of Chester andv of the boiler casing removed and showing in outside view t he headers of the superheater, I

Fig. 4 is a fragmentary'section taken on thri lme 1-4 of Fig. 1.

1g. superheater header which forms a part of m invention.

6-6 of Fig. 5.

Figs. 7 and 8 are face views of sectional superheater headers which form a part of my invention, the header. shown in Fig. 8 being longer than the header shown in Fig. 7.

Fig. 9 is a sectional view of similar nature to Fig. 1 showing a modification in the arrangement of the bafiiing and the consequent change of position of the regulating damper. Referring to Figs. 1 to 8 incluslve of the drawings, 1 represents a water tube boiler ig. 6 is an enlarged section on the line- 5 is a face new of an elongated steel i having a main drum 2, water legs or headers 3 and 4, and tubes 5 which connect with the water legs. The water legs 3 and 4 are supported by the casing 6, the side walls 7 and 8 of the. casing being illustrated in Fig. 2.

The wall 7 has an opening 9 in which is fitted the elongated superheater headers 10, 11, and 12. These-headers extend lengthwise of the boiler, the header 1O bein endless and mounted directly above t e sectional headers 11 and 12. The sectional header 11 is longer than the header 12 for a purpose hereinafter more fully described and the header 10 is of a length slightly less than the combined lengths of the headers 11 and 12.

The headers 11 and 12 are open at their oppositely disposed ends and closed at their abutting ends as clearly shown in Fi 3. All of said superheater headers, as ilustrated in Fig. 3, take the angle of inclination of the water tubes 5.

All of the headers 10, 11, and 12, have superheating pipes 13 communicating therewith, said superheating pipes each being U- shape and extending transversely into a superheating chamber 14 which is formed made in the midst of the tubes '5 as clearly shown 12 according to the position ofthe super heating pipe within the length of the head-' ers. By this arrangement the steam to be superheated and which enters the end 15 of the header 12, Will pass through theheader 12 and through the ends of the pipes 13 which communicate therewith into the lower end of the header 10. From thence it will pass upwardly and longitudinally of the header 10 and through other ,p1pes 13 into the header 11, where it will be taken off as combustion to pass to the uppermost tubesand t0 the drum 2 as will hereinafter be more fully described.

Another portion 18 of said baffle extends downwardly from the water leg 3 and stops short of the water leg 4 in a manner similar to the bafiie portion 17 A short upright or vertical portion 19 of said bafile (see Fig. 2) extends upwardly from the bafile 18 to the baffle 17. This short vertical portion 19 of said bafiie also leads downwardly from the water leg-3 and stops short of the water leg 4 in a manner similar to that described in connection with the baiile portions 17 and 18. Thus, the portions 17 19, and 18 form a battle wall which extends entirely across the width of the boiler casing and provides the top and a portion of the end of said superheater casing 14.

Another portion 20 of said baflie forms the bottom of the superheatin chamber 14 and extends from the wall 7 o the boiler casing to the baflie portion 19. However, this baflie portion 20 is positioned entirely within the length of the space between the water legs 3 and 4 so that a passage is provided at both ends. This is clearly illustrated in Fi 1.

id grate 21 providing the furnace is -mounted between the front wall and an intermediate wall 22 of the casing and directly under the forward end 23 of the baflie portion 20 so that the products of combustion arising from the furnace engage the forward portion 24 of the baffle portions 17 19, and 18, and are compelled to pass through the superheating chamber 14. After passing through the superheating chamber, the productsof combustion pass upwardly and forwardly in the direction of the arrows to heat the tubes 5 which are above said baflle portions 17, 19, and 18.

A bafile 25 is interposed between the tubes 5 and the drum 2, said bafile extending from the water leg 4 forwardly and stopping short of the water leg 3 so as to provide a passage 26 through which the products of combustion pass to heat the drum 2 rior to passing through the outlet opening 2'? A damper 28 is provided 'at the rear end of the superheating casing 14 and may be moved on its; pivot 29 by a rod- 30 which extends to the outer part of the side wall 7. The rod 30 is preferably provided with a handle 31 so that the damper may be swung on its pivot to regulate the amount of the products of combustion passing through the superheating chamber 14.

Furthermore, I preferably provide the damper at the outlet end of the chamber 14 so that'the intensity of the heat of the products of combustion passing through the superheating chamber will be reduced prior to engaging the damper, thus I am able to use a comparatively thin damper and one made of cast iron if desired.

In the form of my invention shown in Fig. 9, I have shown an additional baflie 32 which extends rearwardly from the front water leg 3 stopping short of the rear water leg to provide a passage 33 for the products of combustion prior to passing forwardly between the water tubes and through the superheating chamber.

It will be further noted that in this modification that instead of having the. bafile portions 17, 19, and 18 extend rearwardly from the water leg 3, they extend forwardly from the water leg 4 and all stop short of the water leg 3 to provide a passage for the products of combustion upwardly between the tubes. With this construction, the products of combustion pass inwardly at the rear end of the srperheating chamber 14, and the damper 28 is located at the forward end of the superheating chamber so that in this instance also the products of'combustion passing through the superheating chamber will be less intense at the outlet end of the superheating chamber than at the inlet end and I can use a comparatively thin'regulating damper as above described in connection with the form illustrated in Figs. 1 to 4 inclusive.

Also, it will be noted that in Fig. 9 I have shown the baflie 25 extending rearwardly from the front water leg 3 so that after the products of combustion pass through the superheating chamber, they will be compelled to travel rearwardly between the uppermost tubes 5 and through the opening provided between the end of the baffle 25 and the water leg 4.

In the sectional views shown in Figs. 1 and 9, I have not shown the water legs in section, but it will be understood that these water legs are hollow and communicate with the hollow drum 2 and with the water tubes chamber 14. To accomplish this latter-end, eachqof the headers 10, 11,. and l2, has holes 7 5., By arranging the superheating chamber and superheater in the midst of the tubes 5, between which all of the products ofcomb ustion pass prior to reaching the outEtpassage 27, a high-pressure and degree of superheat can be obtained.

- Furthermore, the superheater can be read.- ily removed from the superheating chamber 14 by pulling it out of the opening 9 or the pipes of the superheater can be cleaped Without rembving the superheater from the 34 which are in alinement with the ends of the super-heating pipes 13, and these holes 34; are normally closed by threaded plugs 35.

Thus, my invention isextremely practical, both as a means for securing superheated steam under a desired pressure and temperature and also as a means which permits the ready removal or cleaning of any of the several I By making the sectional header 11 longer than the sectional header 12, additional space for expansion of the superheated steam is provided and the superheated steam will spirit thereo and hence I do not limit myfreely pass from one header to the other through superheating pipes 13;

Whlle I have described my invention as taking a particular form, it will be understood that the various parts of my invention may be cha ed without departing from the self to the precise construction set forth, but consider that I am at liberty to make such changes and alterations as fairly come within the scope of the appended claims.

' a part extending Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A. b'oiler including a casing, two headers, a plurality of superimposed rows of tubes connecting said headers within the casing, a. battle interposed between certain of the rows of tubes, said bafiie having two portions 5 aced apart, one above the other, and .exten ing partway of the length of the tubes, the upper one of said portions havi lengthwise beyond the adjacent end of the lower portion to prevent the products of combustion from passing directly from the fire box of the casing to the upgermost of said tubes, said portions of the b e extending transversely from one side wall of the casing toward the opposite side wall of the casing and stopping short thereof, said baflie also having an upright portion extending lengthwise of the tubes and between said first and second portions, said jacent end of the lower side wall and between said first two portions of the .baflle, substantially as described.-

2. A boiler including a casing two headers, a plurality ofv superimposed rows of tubes connecting said headers within the casing, a baiiie interposed between 'certain of the rows of tubes, said baflie having two por tions spaced apart, one above the other, and extending partway of the length-of the tubes, the upper one of said portions having a part extending lengthwise beyond the adportion to prevent the products of combustion from passing directly from the fire box of the casing to the uppermost of said tubes, said portions of the baffle extending transversely from one side wall of the casing toward the opposite side wall of the casing and stopping shortthereof, said baflie alsohaving a portion ex:

tending lengthwise of the tubesand between said first and second portions, said third mentioned portion being spaced between said side walls of the casing, and a superheater extending inwardly from said first mentioned side wall and between said first two portions of the baflie, said baiiie having another portion bridging the spacebetween the third mentioned portion and said opposite side wall of the casing, said fourth mentioned portion extending partway of the length of said tubes and perniitting a portion of the products of combustion arising from the, fire box to pass to the uppermost tubes without passing through the space including the superheater, substantially as describe 3. A boiler including a casing, two head'- ers, a plurality of superimposed rows of tubes connecting said headers within the casing, a baflle interposed between certain of the rows of tubes, said ,baflie having two portions spaced apart, one above the other, and extending partway of the length of the tubes, the upper one of said ortions having a part extendin lengthwise beyond the adjacent end of t e lower portion to prevent the products of combustion from passing directly from the fire box of the casing to the uppermost of said tubes, said portions of the bafile extending transversely from one side wall of the casing toward the opposite side wall of the casing and stopping short thereof, said bafile also having an upright portion extending lengthwise of the tubes and between said first and second portions, said third mentioned portion being spaced between said side walls of the casing, another baflie'portion bridging the space between said upright portion and said opposite side wall of the casing, a superheater extending inwardly from said first mentioned side wall and between said first two portions of the baflie and another ba'file spaced above said first mentioned baflie to cause the pr ducts of combustion to pass longitudinally above the first mentioned batjacent end of the lower portion to prevent the products of combustion from passing directly from the fire box of the casin to the uppermost of said tubes, said portions of the battle extending transversely from one side wall of the casing toward the opposite side wall of the casing and stopping short thereof, said bafiie also havingJ a portion extending lengthwise of the tu' es and between said first and second portions, said third mentioned portion being spaced between said side walls of the casing, a su erheater extending inwardly from said rst mentioned side wall and between said first two portions of the baffle, said bafile having another portion extending between the third mentioned portion and the second mentioned side wall pf the casing, said fourth mentioned portion extending partway of the length of said tubes and permitting a portion of the roducts of combustion arising from the fire box to pass to the uppermost tubes without passing through the sides including the superheater, and a damper adapted to close the space between said first two portions of the first mentioned bafile, substantially as described.

5. A boiler including a casing, headers positioned adjacent the front and rear of said casing, a plurality of'superimposed rows of water tubes connecting said headers, a baflle interposed between certain of the rows of tubes, said bafilehaving two portions spaced apart, one above the other, one of said portions extending from one of the headers toward the other of said headers but stoppingshort of said latter mentioned header to provide a passage upwardly for the products of combustion,- the other portion of said baflle having its front and rear edges spaced from the adjacent headers to provide passages upwardly for the prodnets of combustion, said bafiie also having a portion extending lengthwise of the tubes between said first two portions, said third mentioned portion being spaced between said side walls of the casing, and a superheater extending inwardly from said first mentioned side wall and between said first two portions of the baffle, said baflle having another portion extending between the third mentioned portion and the second mentioned side wall of the casing, said fourth mentioned portion extending at one end into close proximity to said first mentioned header and having its opposite end spaced from the other of said headers to permit a portion of the products of combustion to pass to the uppermost tubes without passing through the space including the superheater, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN H. HINMAN,

Witnesses:

CHAS. E. Po'rrs, MARY A. INGLAR.

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