US130009A - Improvement in feed-water heaters and regulators - Google Patents

Description

Patented July 3o .L Pl 0 t a U ,g e.. D" d n a S rl .e t Na Ae MH Yr Dn@ Drift Ea BW ..0 Re e rr n t n.9 Gnu m0.. No 03 rlll D. J 0 .MNV

RCRERT RERRYMAN, oEfHARTEoRD, CONNECTICUT, lAssierNoR To BERRY- MAN MANUFACTURING COMPANY, CE sAME PLACE.

IMPROVEMENT IN FEED-WATER HEATERS AND REGULATORS.

Specilication forming part of Letters Patent No. l30,009, dated July 30, 1872.

`Specication describing Improvements in Feed-Water Heating and Regulating Apparatus for Steam-Boilers, invented byBoBERT BERRYMAN, of Hartford, county of Hartford and State of Connecticut.

Improvements 'in Feed- Water Heating and Regalatz'ag Apparatus for Steam-Boilers.

`My invention consists of certain improvementstoo fully described hereafter to need "preliminary explanationin apparatus for heating, settling or filtering, and regulating the supply of feed-waterto steam-boilers.

In the accompanying drawing, Figure l is a side elevation, partly in section, of my iml proved feed-water heating and regulating aptional view of a modication. Y l

The apparatus consists, mainly, of three vessels, A, B, and C, connected together, and communicating with each other through a seriesof pipes. Thelargest vessel, A, in which the feed-water is heated, and from which it is conducted to the` boiler, communicates with the latter through ltwo pipes, -D land D', the former of which is a steam-pipe, and extends down into the boiler to a point coinciding with the lowest water-level, while the latter pipe D', through which the feed-water is conducted, enters the said boiler. at any convenient point below the water-line. VThe waterparatus for steam-boilers; and Fig. 2, a secheating Vessel A is of peculiar construction,

and forms the subject of a separate application for a patent. It will suffice to remark here, therefore, thatthe water'is contained within a chamber, a, and is heated by exhaust steam, which enters the vessel through a branch, b, is caused to circulate through a series of bent tubes, d, arranged in the waterchamber, and escapes finally through a branch, b'. The vessel B, which may be termed the regulator or governor of the apparatus, communicates with the interior of the heater. A i through two pipes, F and F', the former of which is provided with a throttle-valve, e, and extends from near the top of the regulator B to the point in the side ofthe heater at which it is desired to establish the lowest water-level. The other pipe F' enters the heater at a point below the pipe F, and communicates with the bottom of the regulator. To the infi may predominate and descend. Two valves,

g and 7c, one in the steam-pipe D and the other in a pipe, H, leading from a heater, A, have their operating-arms connected to the lever G by a rod, m, and are, so operated by the said lever that when the outer end of the latter ascends the valve g shall be closed, and the the valve k theuopened, and so that when the lever descends the operation shall be reversed, valve 7c closing prior tothe opening of the valve g. The pipe H enters the heaterA at a point coinciding with about its highest waterlevel, and communicates at its opposite end with the top of the open or closed vessel ory cold-water reservoir C, there being a checkvalve, p, in the said pipe just above its point of junction withthe reservoir, and opening toward the latter. The reservoir is supplied with water through a pipe, L, furnished with a check valve, q, to prevent back pressure from the said reservoir, and-the latter communicates with the lower portion of the heaterA through a pipe, H', in which isa check-valve, r, opening toward the heater.

The operation of the apparatus is as follows: Let it be supposed that a supply of hot water from the heater A has just been fed into the boiler through the pipeD', and that the water has descended in the said heater to about the 'ately ow out by its own gravity throagh the pipe F'. When the regulator is thus emptied the bucket or weight h will descend to the bottom of the same, as its actual gravity is considerably greater than that of the weight tat the outer end of the lever, and by this movement the latter will be sov turned as to first close the valve g of the steam-pipe D, and to then open the valve k of the pipe H.

The opening of the valve k establishes coinmunication, through the two pipes H and H, between the heater and cold-water reservoir C, and the pressure being thus equalized or reduced in the heater the water will flow from the reservoir through the pipe H into the heater. The water will rise in the heater until it reaches a point above the mouth of the pipe H, when, owing to the compression of the steam in the upper portion of the heater, the water will rise through'the pipe F toward the regulator B, and will gradually ll the latter, owing to the partial vacuum produced therein by the condensation of the steam. As the regulator fills with water the bucket h will rise, as its speciiic gravity is less than the actual gravity of the weight t', and the valve 7c will consequently be closed and the valve g in the steam-pipe D opened. The heater having been thus lled and the valves adjusted as above described, water will be fed into the boiler through the pipe Dl whenever the level in the said boiler is sufficiently low to permit steam to pass through the pipe D into the heater and thus equalize the pressure. As the water remains comparatively undisturbed iii the heater A, and is onlyr drawn off in small quantities at a time to feed the boiler, it will become thoroughly heated by the exhaust steam passing through the tubes d, and will also precipitate the greater portion of its impurities upon the bottom of the heater before beingdrawn oft'. The said heater should therefore be provided near the bottom with a blowoff cock, through which such impurities can be discharged from time to time. The coldwater reservoir C, which, if closed, will, when empty, be filled with steam from the pipe H, will be again filled with cold water, owing to the partial vacuum produced by the condensation of this steam, before another supply is needed by the heater.

The arrangement of the steam-pipe H, in respect to the closed reservoir C and feed-pipe H', is an important feature of my invention, as it enables the steam to be admitted into the said reservoir above the water, and the latter, consequently, to be quickly discharged. When, however, the reservoir is open, the steam is discharged into and through the dischargepipe H.

The tlirottlevalve e in the pipe F is intended as a means of retarding the passage of steam from the heater into the regulator, when it is desired that the latter shall empty very slowly and thus retard the operation of the valves, in order to permit the water in the heater to descend to a lower level than that shown in the drawing.

As a slight modification of my invention may be mentioned the fact that, instead of the check-valve i' in the pipe H', a valve similar to the valve k, and operated simultaneously with the latter by an extension of the rod m, might be employed, but the check-valve 1' will, in most cases, be found to answer effectually as' a means of preventing back pressure from the heater.

In the modification of my invention shown A in Fig. 2, a more compact arrangement of the apparatus is shown, the regulator B being secured to the top of, aiid contained partly within, the heater.' I prefer, however, where sufficient space can be obtained, to arrange the apparatus in the manner first described, as there is then a quicker operation of the valves, owing to the rapid condensation of steam in the exposed regulator.

I have found, by practical experiment, that the apparatus operates so uniformly that a counter can be attached to one of the valves to indicate how often it has been turned in a given time, from which can be calculated, very nearly, the quantity of water evaporated by the boiler in the same time.

The apparatus may be combined with a supplying or iltering tank attached to two or more boilers, as described in my application for a patent filed on the 11th day of August, A. D. 1871, and some of the features of the apparatus are applicable to a vacuum-pump, for which I am about to make separate application for a patent.

I claim as my inventionl. The combination of the closed reservoir C, a water-heater, pipes H H', connecting the heater and reservoir, and a regulator operating a valve in the pipe H, substantially as set forth.

2. The combination of the heater A, pipe D, steam-discharge pipe H, regulator B, operating valves in the pipes, D and H, and reservoir C.

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

ROBERT BERBYMAN.

Witnesses:

WM. A. STEEL, JOHN K. RUPERTUS.

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