US1318117A - stewart - Google Patents

Description

A. M. STEWART.

PUMPING SYSTEM.

APPLICATION FILED NOV. 4. 1918.

l ,3 1 8?, 1 1'7 0 Patented Oct. 7, 1919.

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PUMPING SYSTEM. APPLICATION FILED NOV. 4. 1918 1,3 1 8, 1 l 7 Patented Oct. 7, 1919.

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A. M. STEWART.

PUMPING SYSTEM.

APPLICATION FILED NOV. 4. I918.

W m6 m. 5 m. w 4 o U3 WW 9 8|. 4 55 .w A a m 72 Q 52 w o 5 O .w i O 6 4 m 5 7M4 x 5 8 g x H ANDREW M. STEWART, OF TOLEDO, OHIO, ASSIGNOR TO THE NATIONAL SUPPLY COMPANY, OF TOLEDO, OHIO, A CORPORATION OF OHIO.

PUMPING SYSTEM.

Specification of Letters Patent.

Application filed November 4,1918. Serial No. 260,974.

To all whom it may concern Be it known that I, ANDREW M. STEWART, a citizen of the United States, residing at Toledo, in the county of Lucas and State of Ohio, have invented new anduseful 'Improvements in Pumping Systems, of which the following is a specification.

My invention relates to methods of pumping a plurality of wells from a central point.

It is the object of this invention to provide a pumping system which employs the surging action of a fluid, such as water, for example, operated from a central point where the power is applied and the fluid is distributed to the various pumps located at different places.

Referring to the accompanyingdrawings, Figure 1 is a plan View of my improved pumping systems, parts being broken away;

ig. 2, a vertical section, partly in side ele- Vation showing one of the distributing valves and its operating means together with various auxiliary devices; Fig. 3, a vertical section showing a part of one of the pumps which I ma employ; Fig. 4, a side elevation of a modi cation of the valve-controlling mechanism, the right hand end being broken off Fig. 5, an end elevation of Fig. 4, looking toward the right; and Fig.6, a section through one of the valves.

On Fig. 1, 1 represents the foundation for the central power plant. tion I mount an engine 2 which drives the crank shaft 3 carrying the belt wheel 4. The

latter drives. the belt 5 runnin over the wheel 6 which drives the shaft On one end of this shaft, I- employ the crank 8 which drives the piston 9 of the pressure pump 10. The pump drives fluid through the pipe 11 into the pressure tank 12, from which the fluid under pressure passes through the outlet pipe 13 into the distributing main or pipe 14. From the pipe 14 a number of branch pipes 15 lead to the inlet chamber 16 of individual distributing valves 17. In the chamber 16 is the slide-valve 18 constructed to cover the two ports 19 and 20, or to cover the port 20 only. The port 19 is an end of the passage 21 in the valve 17 and is connected by a pipe 22 to the working chamber 23 of the motor 24 below the piston 25. The piston rod of the piston 25 is connected above to the cross-head 26, which supports the side-rods 27 extending down to and secured to the cross-head 28 of the On this foundawater, oil, or other pump 30, 29 being the piston-rod of the pump and 31 the outlet pipe thereof.

The port 20'is one end of the passage 32 in the valve 17 which passage is connected by the pipe 33 with the collector main or pipe 34. The pipe 35 connects the main 34 with the surge tank 36, from which the pump 10 draws the motor fluid through the pipe 37.

I have shown only one pump 24 on Fig. 1, but it will be understood that there will be a pump 24 at the outer end of every pipe 22 in use, and that there may bea pipe 22 connected to as many valves 17 as there are pumps 24 to be used. I have not shown a pipe 22 for every valve for the sake of keeping the drawing clear.

The shaft 7 carries a belt-wheel 38 which is connected by the belt 39 to the belt-wheel 40 on the cam or eccentric shaft .41. This shaft carries an eccentric 42 for each valve 17, the slide-valve 18 thereof being connected by a slide-rod 43, a pitman 44 and an eccentric stra 45 to an eccentric 42. i

The operation is as follows: The engine 2 is started which sets in operation the pressure pump 10 and the cam-shaft 41. When the throw of the cam 42 is opposite that shown on Fig. 2, the slide-valve 18 uncovers Patented Oct. 7, 1919..

the port 19, whereupon the fluid from the tank 12 flows through the pipe 13, the supand into the valve-chamber 16 of the valve 17, whose sliding-valve was operated. The fluid flows from the port 19 through the passage 21 and pipe 22 to the motor 24 connected thereto. The fluid in the motor lifts the piston 25 which causes the pump-rod 29 to rise. When the cam 42 comes to the position shown on Fig. 2, the slide-valve 18 connects the ports 19 and 20 and cuts off the connection between the inlet pipe 15 and the port 19, whereupon the fluid in the motor 24 is caused to surge or flow back through the pipe 22 and passage 21 and thence by way of the valve 18 to the surge tank 36 through the passage 32, the branch pipe 33, the main 34, and the pipe 35. The piston 25 and the parts supported thereby fall, placing the pump 30 in condition for another upstroke when the fluid surges back to the piston'25 again. From the tank 36 the pump 16 again draws the fluid through the pipe 37. The operation described for one of the valves 18 I and cooperating apparatus is the same for .the others, it being-advisable that the cams 42 be set to operate the valves 18 in sequence or in groups to make the work of the engine more equally distributed.

The motive fluid for the pumps 24 may be air, water, ammonia, or other fluid. The

pumps 24 may be operated in freezing weather by the use of water treated with a suitable anti-freezing substance. By my invention fluids such as ammonia and such treated water may be used without loss.

Referring now to Figs. 4 and 5, I show a modification of the mechanism shown on' Figs. 1 and 2 for controlling the flow of fluid to and from the well-pump and to 'the surge tanks. Instead of the band-wheel 40 driving a series of eccentrics as shown on Figs. 1 and 2, it drives the cylinder or drum 46, on whose periphery are arranged a series of guides or cams 47 and 48.

Instead of using slide-valves for controlling the fluid, I employ three-way oscillatory valves, such as is shown on Fig. 6. Each valve is operated by an arm 49, controlled by thesaid cams 47 and 48. Each valve casing comprises a T-shaped casing 50 having its central member connected by pipes 51 and 52 and an elbow 53 to the distributing main 54 corresponding to the main 14 of Figs. 1 and 2; one of its end members connected by a pipe 55 and two elbows 56 and 57 to a pipe, as 22*, leading to a wellpump; and the remaining one of its end members connected by two ipes58 and 59 and an elbow 60 to the collector main 61, corresponding to the main 34 of Figs. 1

and 2.

Within each valve casing 50 is an oscillatory valve 62, having a passage .63 arranged-so as to connect a pipe 55 with a pipe 58 when the arm 49 is at its left hand limit, and to connect the pipe 51 with the pipe 55 when the arm is at its right hand limit.

The cams 47 and 48 are in several circular series, each series being composed of pairs of said cams, one cam, as 47, of eachpair being shaped so as to move its arm 49 to the right, and the other cam, as 48, of each pair being shaped so as to move the arm to the left. The cam surfaces are disposed in a zig-zag manner so that when one cam surface leaves its arm the next cam surface will engage the arm and move it back to the position from whichthe preceding cam surface ditions of each well being pumped. The cams are removably secured to the drum by screws or other preferred means, so that they can be adjusted to other positions on the drum or other cams having different lengths'or shapes of cam surfaces may be used. By the use of the cams, variationsin the operation of the valves are limited only by the size of the drum and the number of cams used, and the operation of each well or pump on the wells can be adjusted to suit the field conditions.

, I claim 1. In a system for pumping a plurality of wells, a plurality of pumps, a prime mover therefor, a fluid-operated motor for each pump, a pressure pump for the motive fluid, a distributing main connected to the delivery side of the pressure pump, a distributing valve for each motor operated by the prime mover,a branch pipe connecting each valve with the distributing main, a

pipe connectin each valve to its individual motor, a p1pe aving connectlon wlth-each;

valve and the inlet side of the pressure pump, means in each valve for connecting the pipe leading to its motor alternately to the pipe leading to the motor-supply pipe and to the pipe leading to the inlet side of the pressure pump, and means for operating the first means.

2. In a system for pumping a plurality of wells, a pressure pump, a prime mover therefor, a plurality of motors, a pump operated by each motor, a motive fluid put under pressure by the. pressure pump for operating the motors, apressure tank for receiving thefluid from the pressure pump, a separate valve casing for each motor,

mechanical operating connections between each valve and the prime mover, a branch pipe connecting each casing to the pressure tank, a surge p-ipe leading from each casing to one of the motors, a surge tank connected to each casing, a valve in each casing for connecting the surge pipe alternately to the pressure tank and the surge tank, and a pipe connecting the'surge tank to'the pressure ump. I

3. n a system for pumping a plurality .of wells, a pressure pump, a prime mover therefor, a plurality of motors, a pump operated by each motor, a motive fluid put under pressure by the pressure pump, a pressure tank to receive the fluid from the pressure pump, a distributing main connected to the pressure tank, a valve casing for each motor, a branch pipe connecting each casing to the distributing main, a surge pipe connecting each casing to one motor, a surge tank, a branch pipe connecting each valve casing to the surge tank, :a valve in each casing to connect the surge pipe alternately to the first and second branch pipes, me-

chanical means connected to the prlme 7 mover for operating the valves, and a pipe connecting the surge tank with the pressure pump.

4. In a system for pumping a plurality of wells, a pressure pump, a plurality of motors, a pump operated by each motor, a motive fluid put under pressure by the pressure pump, a pressure tank to receive the fluid from the pressure pump, a distributing main connected to the pressure tank, a valve casing for each motor, a branch pipe con: necting each casing to the distributing main, a surge pipe connectin each casing to one motor, a surge tank, a ing each valve casing to the surge tank, a valve in each casing to connect the surge pipe alternately to the first and second branch pipes, a shaft, means thereon connected to the said valves for operating the same, and a pipe connecting the surge tank with the pressure pump.

5. In a system for pumping a plurality of wells, a plurality of pumps, a fluid-operated motor for each pump, a pressure pump for the motive fluid, a distributing main connected to the delivery side of the pressure pump, a distributing valve for each motor, a branch pipe connecting each valve with the distributing main, a pipe connecting each valve to its individual motor, a pipe having connection with each valve and the inlet side of the pressure pump, means in each valve for connecting the pipe leading to its motor alternately to the pipe leading to the motor-supply pipe and to the pipe leading to the inlet sideof the pressure pump, and a series of traveling cams adapted to operate the valves in a selected sequence.

6. In a system for pumping a plurality of wells, a plurality of pumps, a fluid-oper-' ated motor for each pump, a pressure pump for the motive fluid, a distributing main connected to the delivery side of the pressure pump, a distributing valve for each motor, a branch pipe connecting each valve with the distributing main, a plpe connecting each valve .to its individual motor, a pipe having connection with each valve and the inlet side of the pressure pump, means in each valve for connecting the pipe leading to its motor alternately to the pipe leading to the motor-supply pipe and to the pipe leading to the inlet side of the pressure pump, and a series of traveling and adjustable cams adapted to operate the valves in a selected sequence at various selected times.

7. In a system for pumping a plurality of wells, a plurality of pumps, a fluid-operated motor for each pump, a pressure pump for the motive fluid, a distributing main connected to the delivery side of the pressure pump, a distributing valve for each motor, a branch pipe connecting each ranch pipe connec-tvalve with the distributing main, a pipe connecting each valve to its individual motor, a pipe having connection with each periods during which the several valves may remain open or closed may be independently adjusted.

8. In a system for pumplng a plurallty .of wells, a plurality of pumps, a fluid-operated motor for each pump, a pressure pump for the motive fluid, a distributing main connected to the delivery side of the a pressure pump, a distributing valvefor each motor, a branch pipe connecting each valve with the distributing main, a pipe connecting each valve to its individual motor, a pipe having connection with each valve and the inlet side of the pressure pump, means in each valve for connecting the pipe leading to its motor alternately to the pipe leading to the motor-supply pipe and to the pipe leading to the inlet side of the pressure pump, a rotatable drum, a plu rality of circular series of cams with their cam surfaces arranged in a zigzag manner around the drum, and an arm connected to each valve and arranged to be moved by one of said circular series of cams.

9. In a system for pumping a plurality of wells, a plurality of pumps, a fluid-operated motor for each pump, a pressure pump for the motivefluid, a distributing main connected to the delivery side of the pressure pump, a distributing valve for each motor, a branch pipe connecting each valve with the distributing main, a pipe connecting each valve to its individual motor, a pipe having connection with each valve and the inlet side of the pressure pump, means in each valve for connecting the pipe leading to its motor alternately to the pipe leading to the motor-supply pipe and to the pipe leading to the inlet side of the pressure pump, a rotatable drum, a plurality of circular series of removable cams with their cam surfaces arranged in a zigzag manner around the drum, and an arm connected to each valve and arranged to be moved by one of said circular series of cams.

10. In a system for pumping a plurality of wells, a pump at each well, a fluid-oppumps, a ,pressure pump for the motive fluid, a prime mover therefor, a surge pipe .for connecting each motor with the pressure pump, and a series of valves mechanically operated by the prime mover for alternately connecting the surge pipes to the outlet and inlet sides of the pressure pump.

11. In a system for pumping a plurality of wells, a pump at each well, a fluid-opnately connecting the surge pipes in a defierated motor at each Well for the respective nite order to the outlet and inletsides of the pumps, a pressure pump for the motive pressure pump. 10 fluid, a prime mover therefor, a surge pipe Signed at Toledo, Ohio, this 1st day of 5 for connecting each motor with the pres- November, 1918.

sure pump, and a series of valves mechanit cally operated by the prime mover for alter- ANDREW M. STEWART.

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