US1281281A - Appliance for heating boiler feed-water. - Google Patents

Description

J. C. BOYLE.

APPLIANCE FOR HEATING BOILER FEED WATER.

APPLICATION FILED APR. 16. 19W.

Patented Oct. 15, 1918..

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INVENTOH:

A TTORIVEK JACOB C. BOYLE, OI INDIANAPOLIS, INDI J-f' APPLIANCE FOR HEATING BOILER FEED-WATER.

Specification of Letters Patent.

Application med A rn e, 1917. Serial a; 162,472.

To all whom it may concern:

Be it known that I, .JAcoB C. Bonn, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented a new and useful Appliance for Heating Boiler Feed- Water, of which the .followin is a specification, reference being bad to t e accompanying drawings and to the letters and figures of reference marked thereon.

This invention relates to means for heating water flowing through a pipe, the invention having reference more particularly to appliances whereby the heating of the water is controlled.

An object of the invention is to provide inexpensive appliances whereby to control the flow of steam for heating water flowing under pressure, which controlling appliances shall be simple and so constructed as to be controlled by the water pressure without it bemg necessary to require the water to'' pass through the controlling appliances, an aim being to avoid imposing o flow of the water.

Another object of the invention is to rostructions to the vide improved appliances for heating eed% water which shall be of such construction as to permit the appliances to be readily and cheaply applied under existing conditions to heat water in established branch pipes through which water is fed to steam boilers, without changin the arrangement of the branch pipes, wEich appliance shall be of simple and inexpensive construction and be durable and economical in use.

With the above-mentioned and other objects in view, the invention consists in improved appliances whereb to control the use of steam for heating feed water in an automatic manner so that the heating of the water shall begin when the feeding of the water is starte and the steam supply shut oif automatically when the feeding of the water is stopped; the controlling appliances for the steam supply being such as to permit the feed water to flow in a direct course with a minimum frictional resistance to its flow, the controlling appliances being acted upon by pressure rather than flow of the water. The invention consists also further in the novel parts and in the combinations and arrangement of parts as hereinafter particularly described and further defined in the accompanying claims.

- Referring to the drawings, Figure 1 is a side elevation of a' steam-boiler in connection with which'the invention is illustrated; Fig. 2 is a central section-of the controlling appliances that regulate the steam supply, the stop valve of the apparatus being shown in closed position; Fig. 3 is a central section of the controlling appliances in which the stop valve is in open osition; Fig. 4 is a section on the line IV V on Fig. 3; Figs. 5 and 6 are central sections of detached parts of the appliances; Fig. 7 is a fragmentary section and arrangement of the invention the same is illustrated in connection with a locomotive type of steam-boiler 1 which is supplied with water from a supply pipe 2 to which an injector 3 is connected, the latter bein provided with a' steam supply pipe 4 whicli is connected with a head or turret 5 which has connection with the steam space in the boiler. A branch pipe is connected to the injector and preferably comprises two sections 6 and 7 suitabl coupled together and connected with a c eck valve 8 through which the feed water is delivered into the boiler. It is required in accordance with the invention that the feed water pass unobstructedly from the injector and through theconducting pipe and that the high pressure steam be injected into the conducting pipe to heat the passing water, and that the supply of steam be automatically stopped Patented Oct. 15, 1918.-

tom portionlO to constitute'a partition beerably has a screw threaded socket 15 m'its' inner ortion and in which a stop stud 16 is secure d so as to be adjustable relatively to the stop valve to govern the lift of the stop valve, the stop stud being provided with a lock-nut 17 engaging the inside of the cap 14. In some cases a coil spring 18 is arranged on the stop stud in contact with the stop valve to promptly seat the latter. The

' steam-chest com rises also aside wall 19 that is fixed to t e wall 9 and its bottom 10 to constitute the outlet chamber. A hollow cylinder 20 is secured at one end to the lower portion of the wall 19 and has a head 21 therein'in which is a central opening 22 to receive a push-rod, the head'21 being provided with a packing box 23 havin a packing nut 24 arranged within the out et chamstop valve 12 to her of the steam-chest. The cylinder 20 has a suitable number of vent holes 25 therein to rovide communication-with the atmosphere. he cylinder is provided also with a bottom head 26 which is suitably connected with the branch ipe that conducts the feed water to permit t e water to enter the cylinder,

the connection preferably being provided with. a shut-ofi valve'27 which may be provided with a nipple 28 that is connected with,

the head 26, and a nipple 29 that is connected with the section 6 of the branch pipe so that the valve may be closed to permit of repairs to the controlling appliances without interfering with the feeding of the water. A suitably packed piston 30 is movably arranged in the cylinder 20 and has a piston rod or push-rod'31 fixed thereto and extending through the acking box and toward the moved into contact with the lower ends of the guide wings of the valve when the piston is forced upward, whereby to 'lift'the stop valve from its seat. A spring 32 is seated under com ression between the piston 30 and the hea 21 for retractlng the push rod to permit the stop valve to become seated.

A supply pilpe 33 is connected with the header 5 and-a so with the wall 9 to conduct steam into the inlet chamber of the valvechest and preferably is provided with a stop valve 34; A delivery pipe 35 is connected to the wall 19 to conduct the steam from the outlet chamber of the valve-chest and it preferably is provided with a stop valve 36,

the delivery pipe being suitably connected with the ipe that conducts the feed water to the boi er between the controlling a pliance connection and the terminal end of the branch or conducting pipe. Preferably a casing 37 is connected to the sections 6 and 7 to form a continuous conducting pipe and has a suitable opening in its wall which is normall in whic is secured a tube 39 having a lock nut 40 engaging the tube, the latter having an extension 41 to which the delivery pipe 35 is connected by means of.a coupling nut 42. The tube 39 has an elbow 43within the casing 37, the .elbow having a jet nozzle 44 thereon that is arranged to direct a jet of steam into the section 7 of the conducting pipe.

In some cases a screw ring 45 may be fixclosed by an inserted bushing 38 edly secured in a suitable aperture in the 7 screw r ng and supporting the jet nozzle within the conducting pipe.

' In practical use steam is admitted through the supply pipe 33 to the inlet chamber of the valve-chest and is stopped in its flow by the closed stop valve 12, it being assumed that the boiler is not being fed. When the operation is begun to supply the boiler with water, the feed water which is forced through the conducting pipe causes water pressure on the piston 30 which forces the piston to move in the cylinder until the rod 31 engages with a thrust-blow and unseats the stop valve 12, the latter permitting the steam to pass through the aperture 11 and out through the delivery pipe 35. The heat v of the steam is imparted to the feed water asis .well known, so that the feed water is heated to a high degree with all the advantages that are known to result from heating boiler feed water before delivery to the boiler; When the feeding of the water is stopped, the resulting a ck of pressure against the piston' 30 permits the sprin 32 to act to draw the push rod 31 away om the stop valve 12 so that the latter again becomes seated' and prevents the steamfrom passing into .the delivery pipe.

Havm thus described the invention, what is claims as new is- 1. A feed-water heater appliance includand moved b the pressure thereof, the mov-.

able device ein provided with a thrustblow lifter for t e sto -valve.

2. In means for heating boiler-feed water, the combination with a conducting-pipe, and a pumping device for forcing water through the conducting-pipe, of a steam-delivery pipe connected with the conducting-pipe intermediate of its ends, a movable stop-valve for the steam delivery pipe, and controlling means for the stop-valve connected with the conducting pipe at v a point between the pumping device and the connection of the steam-delivery pipe with the conductingpipe, said controlling means being adapted to receive and stop a portion of the water and to be actuated by the pressure thereof.v

3. In means for heating boiler feed-water, the combination with a conducting-pipe, and a pumping device connected with the conducting-pipe, of a steam-delivery pipe connected with the conducting-pipe at a point intermediatevof its ends, a steam-chest connected to the steam-delivery pipe and pro vided on the inside of its wall with a packing box, a steam-supply conduit connected with the steam-chest and provided with a stop-valve, a water-retaining chamber connected with the conducting-pipe at a point between the pumping, device and the point of connection of the steamdelivery pipe with the conducting-pipe, an actuating device in the chamber to be moved by pressure in the chamber, and a push-rod secured to the actuating device and extending through the packing-box and into the steam-chest opposite to the stop-valve, the push-rod being held at an appreciable distance away from the stop-valve when the latter is seated. o

4. In means for heating boiler-feed water, the combination with a conducting-pipe, and a pumping device connected with the conducting-pipe, of a steam-delivery pipe connected to the wall of the conductingzipipe and extending transversely into the con ucting-pipe and thence in the direction away from the pum )ing device, a cylinder having connection with the conducting-pipe at a point between the pumping device and the steam-delivery pipe, the cylinder having a head provided with a packing box, a steamchest secured to the cylinder and connected with the steam delivery pipe, the steamchest inclosing the packing-box and having an inlet chamber with a communicating duct, a stop-valve in the inlet chamber to close the duct, a closure secured to the steamchest and closing the inlet chamber, a stop stud on the closure extending toward the stop-valve, a piston movable in the cylinder, and a push-rod secured to the piston and extending through the packing-box and toward the stop-valve.

In testimony whereof I affix my signature in presence of two witnesses.

JAOB C. BOYLE.

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