US1050616A

US1050616A - System of feeding treated water to boilers.

Info

Publication number: US1050616A
Authority: US
Inventors: Joseph H Cooper
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-03-13
Filing date: 1911-03-13
Publication date: 1913-01-14
Anticipated expiration: 1930-01-14

Description

J. H. COOPER. SYSTEM OF FEEDING TREATED WATER TO BOILERS. APPLIOATION FILED MAR. 13,1911.

1,050,.6 1 6. Patented Jan. 14, 1913.

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I J. H. COOPER, SYSTEM OF FEEDING TREATED WATER T0 BOILERS. APPLICATION FILED 111111.13, 1911.

1,050,616. Patented Jan. 14, 1913;

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APPLICATION FILED MARJG, 1911.

Patented Jan. 14, 1913.

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UNITED STATES PATENT oEEIoE.

irosEPH H. COOPER, 0E PAOLA, KANSAS.

SYSTEM OF FEEDING TREATED WATER TO BOILERS.

To all whom it may concern:

Be it known that I, JOSEPH I'I. COOPER, a citizen of the United. States, and a resident of Paola, Miami county, Kansas, have invented certain new and useful Improvements in Systems of Feeding Treated Water to Boilers, of which the following is a clear, true, and exact description, 'such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in injectors and has particular reference to means for adding or feeding chemicals to boilerfeed water proportionately to the quantity of water forced into the boiler.

The object of my invention is to automatically feed untreated water and boiler compound or water treating material simultaneously in desired proportions from separate sources or tanks to a steam boiler through a single boiler connection.

A further object of my invention is to provide a novel apparatus in combination with a feed water injector for automatically cont-rolling the feeding of water-treating compound in liquid form to the suction end of the injector in consonance with the operation of the injector.

A further object of my invention is to provide means in combination with a number of feed water injectors whereby chemicals in liquid form will be automatically fed in a predetermined proportion, from a single source of supply, to the respective supply pipe of any of the injectors which may be in operation.

My invention consists in the novel combinations and arrangements of mechanisms and parts whereby the above objects are attained together with others hereinafter appearing and all as fully described herein and particularly pointed out in the appended claims.

My invention will be more readily understood by reference to the accompanying drawings,.forming a part of this specification, and in which:

Figure 1 is a partial side elevation of a locomotive equipped with a combination feed water and chemical injecting apparatus embodying my invention; Fig. 2 is an end Specification of Letters Patent.

Application filed March 13, 1911.

Patented Jan. 14,1913.

Serial No. 614,198.

elevation of the locomotive showing the two injectors, one on each side thereof; Fig. 3 is an enlarged longitudinal sectional view of the combined feed water and liquid chemical injector; and Fig. 4: is an enlarged sectional view of the liquid controlling valve similar to the view shown in Fig. 3 except that the valve is in operating or open position.

My invention is capable of embodiment in structures arranged in different combinations for performing different functions relative to the treatment of feed water. I have, however, confined the illustration of my invention to an apparatus particularly adapted for the feeding of a chemical, in liquid form, to the suction pipes of injectors, but I desire it to be understood that my invention is not thus limited.

It will be understood that my invention is applicable to a stationary boiler, or to any situation in which it is desired to feed water and water-treating material to a containing vessel from separate sources through a single connection to the container. But I have confined the illustration of the application of the invention to a locomotive for the reason that the advantages inherent in the invention apply more particularly to locomotive practice on account of the apparent necessity of constantly using treated water in locomotive boilers, partly due to the practice of forcing them to their highest production of steam, and partly due to the difficulty of obtaining boiler feed water for locomotives which is free from deleterious substances.

In this specification I make use of the term treated water as signifying water to which a water-treating material has been added with the idea that the treated water is not necessarily chemically combined with the treating material; in other words, treated water, as herein used, means untreated water to which any material is added for the purpose of affecting the nature, condition or action either simultaneously with the addition of the material, or later when the water is made use of in a boiler or otherwise.

A particular advantage of my invention resides in its economy of the water-treating material, for instead of adding the watertreating. material to the whole of the water in the water supply tank, and thereby losing the proportion of treating material contained in whatever quantity of water may be lost, I add the water treating material to the water as the water passes to the boiler feed device, and consequently I am assured that the water treating material is conserved and all of it is made use of.

In said drawings, A indicates a locomotive boiler, and B the tender, having a water tank or reservoir C. The boiler is provided with two injectors 3 and 1,'arranged respectively on the left and right hand sides of the boiler within the cab, and located above the normal water line D of the tank C. Each of the injectors illustrated comprises a compound adjustable steam nozzle 5, suitably mounted Within the casing 6, which is provided with a feed water connection or suction end 7, a steam connection 8 and a feed water delivery end 9. The suction end of the injector 3 is connected with the bottom of the tank C by means of the water supply pipe 10. The steam supply connection 8 is connected wit-l1 the steam space of the locomotive boiler by the valved steam pipe 11, and the delivery end 9 is connected to the forward end of the boiler bythe boiler teed .pipe 12. The injector 4: is similarly connected with the boiler and is connected with the tank by means of the feed water supply pipe 13. The injector is provided with a starting or operating lever 3 linked to the longitudinally movable valve rod 5 by means of which steam can be admitted to the injector to cause it to operate. The nozzle 5 is mounted upon the inner end of the rod 5 and comprises the outer member 5 movable with the rod 5 and the inner member 5 which has a lost motion connection with the member 5 whereby the first movement of the lever 3' operates to admit steam to the interior of the inner member 5 for the purpose of producing an initial vacuum and thereby raising the water in the supply pipe 10 up into the injector. hen this has occurred a further movement of the lever 3 withdraws the inner nozzle 5 from its seat and steam is permitted to pass through the injector around the outer surface of the inner nozzle 5, thereby admitting su-ificient steam to force the water through the injector and the feed pipe 12 into the boiler.

As stated, the first action of the steam is to produce a vacuum in the inlet or suction chamber 15 of the injector and this vacuum or suction action is maintained during the action or operation of the injector. The inlet or suction end of the injector is provided with a valve 16 by means of which the supply of water to the injector may be regulated. The injector is also provided with an overflow connection 17 through which the water can escape from the injector when for any reason the injector does not force the water into the boiler. This overflow connection is also provided with a hand valve 18, by means of which it can be regulated. The delivery end of the injector is provided with a check valve 19 and the feed pipe 12 is provided with a check valve 20 where it connects with the boiler. These check valves act in the usual manner to prevent the escape of water or steam from the boiler backward through the feed pipe 12 and through the injector. I feed or supplv the water-treating material to the feed water as the feed water passes from the tank C to the injector, and I make use of the vacuum produced by the injector or, in other words, the suction action of the injector to control the How of the water treating material, and also to cause it to be fed to the feed water connection of the injector. I preferably use the water treating material in liquid form and I provide a tank 21, mounted upon the boiler within the cab, for the purpose of containing the necessary liquid. I connect this tank with the

feed water connections

10 and 13 by means of a feed pipe 22 and in this pipe I provide a valve 23 by means of which I can control the flow of the water-treating liquid. This valve 23 is preferably located, as to height,

below the injectors 3 and 4: and above the normal water level D of the tank C.

Below the valve 23 the liquid supply pipe 22 divides into two branches, 21 and 25, which are connected respectively to the

supply pipes

10 and 13, preferably at their lowest points. The pipe 22 is provided with an ordinary stop valve 26, adjacent to the tank 21, by means of which the flow of chemical can be shut off completely when desired.

In locomotive practice, it desirable that the necessary or required duties of the fireman and engineer be reduced rather than added to and, while it is obvious that the flow of the liquid from the tank 21 to the feed pipes of the injectors might be controlled by hand through the medium of the valve. 26, it is not desirable to add the care of this matter to the duties of the engineer or fireman. I have, therefore, arranged the valve 23 in such a manner that the flow of the liquid from the tank 21 to the feed pipes shall be controlled automatically with the starting and stopping of the injectors and, in the application of my invention illus trated in the drawings, I make use of the vacuum or suction action of the injector to thus automatically control the valve 23. This valve comprises a casing 27, having a cylindrical chamber 28 at one end, and a smaller cylindrical chamber 29 at the other end. The chamber 28 contains a piston 30 and the chamber 29 contains a cylindrical piston valve 31. The piston 30 and the valve 31 are mounted on opposite ends of a piston rod 32 by means of which any movement of the piston 30 is communicated to the valve 31. The cylinder 29 acts as a passage for the water-treating liquid and the piston valve 31 controls this passage. I provide an adjustable needle valve 33, immediately above the casing 27, by which the flow of liquid from the tank 21 can be adjusted to the desired proportion with the quantity of water fed by the injector to the boiler, and consequently whenever the piston valve 31 permits the flow of liquid the liquid will be supplied at a certain predetermined and definite rate. The valve 31 is maintained in its closed position by means of the compression spring 34 mounted within the cylinder 28 and which operates to hold the piston 30 at the outer limit of its movement. I connect the cylinder 28 with the suction end 7 of the injector 3 by means of a pipe 35 and thereby when the injector is started into operation the vacuum or suction action thereof tends to exhaust the inner end of the cylinder 28 or form a vacuum therein and air pressure entering the cylinder through the vent 36 in the head 37 forces the piston, and consequently the valve 31, to the other limit of its movement. As this vacuum is maintained during the time that the injector is in operation the valve 31 is held in its open position and permits the water-treating fluid to flow from the tank 21 to the feed water connection of the injector. If there were but one injector, the connections and action, as described, would be sufiicient, but in locomotive practice, for purposes of safety, it is usual to provide two injectors, as already described, and, while I might provide two tanks containing water-treating liquid, one connected to each of the injectors and to its supply pipe, I prefer to supply a single tank and connect it to each of the injectors and their supply pipes and arrange the connections in-such a manner that when either of the injectors is in operation the watertreating liquid will be supplied to its feed water pipe. To accomplish the above I connect the cylinder 28 of the valve 23 with the suction end of each of the injectors, dividing the vacuum pipe 35 into two branches, 37 and 38, and connecting them respectively to the suction ends of the injectors 3 and 4.

.These

pipes

37 and 38 are each provided with

check valves

39 and 40, respectively, arranged adjacent to the connection of these pipes wit-h. the pipe 35. When the injector 3 is put into operation the vacuum produced thereby tends to close the valve 40 in the pipe 38 which connects With the injector 4,

and reversely the valve 39 is closed by the action of the injector 4. The action as described serves to open the valve 23 when either of the injectors is put into operation and to maintain it thus open during the operation of either injector.

To cause the water-treating liquid to flow to the supply pipe of the injector which is maintaining the valve 23 in open condition,

I provide

check valves

41 and 42 which respectively control the flow of liquid through the

liquid supply pipes

24 and 25. These valves are preferably What are known as vertical check valves and are arranged in such a manner that they are held open by gravity and close against an upper seat, consequently the suction action of the injector upon its respective feed pipe acts through its liquid feed pipe and raises the check valve in the liquid feed pipe leading to the opposite injector stopping the fiow of the liquid to the injector which is not in operation. This construction permits the flow of the liquid to either injector which may be in operation, or to both of them, if they should be operating simultaneously. It will now be seen that once having adjusted the needle valve 33 and opened the hand valve 26 the flow of the water-treating liquid is controlled automatically by the starting and the stopping of either of the injectors and also that the control is such that the liquid does not flow to either of the injectors when they are not operating. Therefore, the water-treating liquid is conserved and only that quantity is used which is necessary to treat the water actually passing from the feed water tank to the injector.

As many modifications of my invention will readily suggest themselves to one skilled in the art, I do not confine or limit my invention to the specific structures or combinations of parts constituting the feeding system, for water and Water-treating material, as herein described.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. A system of feeding treated water to a boiler comprising, a boiler, a supply of untreated water, a supply of water treating material, a water feed connection between said water supply and said boiler, a water treating material connection between the supply thereof and said water feed connection, means interposed in said water feed connection between the water treating material connection and the boiler for feeding the Water and water treating material to the boiler, means for controlling the operation of said feeding means, and means automatically and pneumatically operable in conjunction with said controlling means for controlling the flow of Water treating material to said Water feed connection, substantially as described.

2. A system of feeding treated water to a boiler, comprising a water reservoir or tank, a tank containing water treating liquid, a water supply pipe connecting the water tank With the boiler, a boiler feed device interposed in said pipe, a liquid supply pipe connecting said liquid tank with the water supply pipe between the water tank and the boiler feed device, cont-rolling means for starting and stopping said boiler feed device, a normally closed pneumatically controlled valve in said liquid supply pipe, and means connecting said valve with said boiler feed device adapted to maintain said valve open and permit the flow of liquid to the water feed pipe when the boiler feed device is in operation.

3. A system of feeding treated water to a boiler comprising a water reservoir, a tank of water treating chemical situated above the normal water line of said water reservoir, a connection between said water reservoir and said boiler, a suction feed water injector interposed in said connection, and situated above said water line, a liquid chemical supply pipe connecting said tank with said connection between the reservoir and the injector, a piston valve controlling the flow of liquid through said pipe, a cylinder in alinement with said piston valve, a piston movable in said cylinder connected to said valve and controlling its position, means normally holding said piston at one limit of its movement and thereby holding said valve in its closed posit-ion, and a con nection between said cylinder and the suction end of said injector.

4. A system of feeding treated water to a boiler from separate supplies of untreated water and water treating solution through a single connection to the boiler, comprising a water tank, a solution tank, a feed water injector, connection between the water tank and injector, connection between the injector and the boiler, connection between the solution tank and the feed water connection, a

piston valve in said feed water connection, a

cylinder in alinement with said valve, a piston movable in said cylinder and connected wit-h said valve, means normally holding said piston at the outer limit of its movement and thereby holding said valve in closed position, and a connection between the inner end of the cylinder and the suction end of the injector.

5. A system of feeding treated water to a boiler comprising a water tank, a solution tank, a boiler feed device having a suction end and a delivery end, connection between the delivery end and the boiler, water feed connection between the suction end and the Water tank, a solution feed connection between the solution tank and the water feed connection, a pressure operated valve controlling the fiow of the solution, connection between the valve and the suction end of the boiler feeder whereby the suction action of the feeder operates to maintain the valve in open position when the feeder is in operation, substantially as described.

6. A system of feeding treated water to a boiler, comprising a water tank, a solution tank, a boiler feed device having a suction end and a delivery end, a connection between the delivery end and the boiler, a water feed connection between the suction end and the water tank, a solution feed connection between the solution tank and the water feed connection, an automatically operated valve interposed in said solution feed connection, said valve comprising a piston valve controlling the flow of solution through said solution feed connection, a cylinder in alinement with said valve, a piston in said cylinder connected to said piston valve and controlling its position, resilient means maintaining the piston at the outer limit of its-movement and the valve closed, an opening in the outer end of the cylinder to admit atmospheric pressure, and a. pipe connecting the inner end of the cylinder to the suction end of the boiler feed device.

7. A steam boiler in combination with a combined feed water and liquid chemical injecting system, comprising a pair of feed water injectors, each thereof having communication with a source of supply of water, and a source of supply of steam, a delivery connection connecting each of said injectors to said boiler, operating means for starting and stopping said injectors, a source of supply of liquid chemical communicating with the supply ends of said injectors, and means connected with the intake connections of said injectors automatically and pneumatically operable by the starting and stopping of each of said injectors for controlling the supply of liquid chemical thereto.

8. A steam boiler, in combination with a combined feed water and liquid chemical injecting system, comprising a pair of feed water injectors, each thereof having communication with a source of supply of feed water and a source of supply of steam, a delivery connection for each of said injectors connecting the delivery end of each thereof with said boiler, a single source of supply of liquid chemical, a single chemical supply pipe communicating with said source and branching to the supply ends of each of said feed water injectors, a valve in said chemical supply pipe, and means automatically and pneumatically operable by the operation of each of said injectors controlling the flow of liquid respectively thereto.

9. A steam boiler, in combination with a combined feed water and liquid chemical inject-ing system, comprising a pair of feed water injectors, each thereof having communication with a source of supply of feed water and a source of supply of steam, a delivery connection for each of said injectors connecting the delivery end of each thereof with said boiler, a single source of supply of liquid chemical, a single chemical supply pipe leading from said source and branching to the suction ends of each of said injectors, a normally closed valve in said pipe controlling the supply of liquid chemical to each of said injectors, means connecting said valve with each of said injectors and automatically operating to open said valve when one of said injectors is started and to hold it open during the operation of either of said injectors, a normally open check valve in each of said branches adapted to be closed by the feed suction of the opposite injector.

10. A system of feeding treated water to a boiler comprising two feed water injectors, a water reservoir, a liquid chemical tank, connection between each of said injectors and said reservoir, connection between each of said injectors and said boiler, a chemical supply pipe leading from said tank and branching to each of said feed water connections, a normally closed valve in said chemical supply pipe controlling the flow of the chemical, means connecting said valve with each of said injectors, whereby said valve is opened during the operation of either of said injectors to permit the flow of chemical to the feed water connections, a normally open valve controlling each of said branches adapted to be closed by the suction of the opposite injector.

11. A system of feeding treated water to a boiler comprising a source of water supply, an injector for feeding water to the boiler and a chemical tank, a pipe leading from said source of water supply to the suction end of said injector, a pipe leading from the discharge end of said injector to the boiler, a chemical supply pipe having communication with the chemical tank and the suction end of said injector, the flow of chemical through said chemical supply pipe being controlled by the vacuum produced in the suction end of the injector, starting when the injector is put into operation and stopping when the operation of the injector is stopped.

12. A. system of feeding treated water to a boiler comprising a source of water supply, means for feeding water to the boiler and a chemical tank, said water feeding means having a suction end and a delivery end, said source of water supply communicating with the suction end of said water feeding means, the delivery end of said water feeding means communicating with the boiler, a chemical supply pipe having communication with the chemical tank and the suction end of said water feeding means, the flow of chemical through said chemical supply pipe toward the water feeding means being controlled by the vacuum produced in the suction end of said water feeding means, starting when the water feeding means is put into operation and stopping when the operation of the water feeding means is stopped.

13. In a system of feeding treated water to a boiler, a source of water supply, a chemical tank, an injector, a pipe leading from the source of water supply to the suction end of said injector, a pipe leading from the de livery end of said injector to the boiler, a chemical supply pipe leading from the chemical tank and communicating with the suction end of said injector, and a pneumatically controlled valve in said chemical supply pipe adapted to allow the chemical to pass therethrough when the injector is, in operation, and to prevent the passage of chemical therethrough when the operation of the injector is stopped.

14. In a system of feeding treated water to a boiler, a source of water supply, a tank to contain the water treating material, means for feeding water to the boiler, said water feeding means having a suction end and a delivery end, a pipe leading from the water supply to the suction end of said water feeding means, a pipe leading from the delivery end to the boiler, the supply pipe leading from the tank of water treating material and communicating with the suction end of said water feeding means, and a pneumatically controlled valve in said supply pipe to allow the passage of water treating material therethrough when'the water feeding means is in operation and to prevent the passage of water treating material there- .through when the operation of the water feeding means is stopped.

15. A system of feeding treated water to a boiler comprising a source of water supply, a chemical tank, an injector for feeding water to the boiler, a pipe leading from said water supply to the suction end of said injector, and a pipe leading from the delivery end of the injector to the boiler, a chemical supply pipe affording communication between the chemical tank and the suction end of said injector, pneumatically controlled means whereby chemical is allowed to pass through said chemical supply pipe when the injector is in operation, and a manually operated valve in said chemical supply pipe.

16. In combination, two injectors, each having its suction end communicating with a source of water supply and its delivery end communicating with a boiler, a tank to contain water treating material, a pipe to convey water treating material provided With a pneumatically controlled valve to In testimony whereof, I have hereunto set allow the passage of Water treating material my hand, this 17th day of February, 1911, in 10 therethrough When one or both of the inthe presence of two subscribing Witnesses. jectors is in operation, and a pi e leadin from the suction end of each of s aid injec JOSEPH 0001 tors to said valve, and check valves in each Vitnesses:

of said last-mentioned pipes, substantially JOHN R. LEFEVRE,

as described. CHARLES GILBERT HAWLEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

' Washington, D. C.