US1131182A - Steam-pump device. - Google Patents

Steam-pump device. Download PDF

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Publication number
US1131182A
US1131182A US1912697722A US1131182A US 1131182 A US1131182 A US 1131182A US 1912697722 A US1912697722 A US 1912697722A US 1131182 A US1131182 A US 1131182A
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US
United States
Prior art keywords
steam
piston
chamber
pump
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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Inventor
Walter V Turner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Westinghouse Air Brake Co
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Westinghouse Air Brake Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Westinghouse Air Brake Co filed Critical Westinghouse Air Brake Co
Priority to US1912697722 priority Critical patent/US1131182A/en
Application granted granted Critical
Publication of US1131182A publication Critical patent/US1131182A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8593Systems
    • Y10T137/86493Multi-way valve unit
    • Y10T137/86574Supply and exhaust
    • Y10T137/86622Motor-operated
    • Y10T137/8663Fluid motor
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8593Systems
    • Y10T137/86493Multi-way valve unit
    • Y10T137/86879Reciprocating valve unit

Description

W. V. TURNER.

STEAM PUMP DEVIOE.

APPLICATION FILED MAY 16, 1912.

Patented Mar. 9, 1915.

v-a ElilAl Sr T6 TOP L.P.CY4-

7'0 rap $1.9 CYL- 70 86770 4 1-4. CYL.

7-0 saTraM 1MP, CYL.

WITNESSES INVENTORY strata learner envision.

W'ALTER V. TURNER, OF EDGEWOOD, PENNSYLVANIA, ASSIGNOR TO THE WESTING- HOUSE AIR BRAKE COMEANY, 0F WILMERDING, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

STEAM-PUMP DEVICE.

Specification of Letters Patent.

Patented liliar. 9, 1915..

Application filed May 16, 1912. Serial No. 697,722.

To all whom it may concern Be it known that I, WALTER V. TURNE a citizen of the United States, residing at Edgewood, in the county of Allegheny and State of Pennsylvania, have invented new and useful Improvements in Steam-Pump Devices, of which the following is a specification.

This invention relates to steam pumps, and more particularly to a locomotive steam pump of the type provided with a piston valve mechanism for controlling the admission and exhaust of steam to and from the steam cylinders of the pump.

Where a piston valve mechanism is employed, especially in high capacity pumps, some trouble has been experienced on account of pounding when the piston valve mechanism moves to the end of its stroke and as a consequence of continued pounding the piston cylinder heads are sometimes broken.

The principal object of my invention is to provide means for preventing or eliminating the pounding of the piston valve mechanism.

In the accompanying drawing; Figure 1 is a sectional view of a piston valve mechanism applied to the cylinder head of a steam pump and Fig. 2 a central sectional view of the cylinder head of the piston valve mechanism.

While the piston valve mechanism shown in the drawing is designed for a cross compound pump, it will be understood that my improvement may also be applied to the valve mechanism of a single stage steam pump, if desired.

As shown in Fig. 1 of the drawing, the piston valve mechanism 1 may consist of a piston stem 2 carrying five pistons 3, 4, 5, 6, and 7 adapted to reciprocate in chambers provided in a casing 8, secured to the pump cylinder 16. Chamber 9 formed by pistons 3 and 4: is constantly open to a steam supply passage 10. Chamber 11 formed by pistons 1 and 5 is constantly open to the bottom of the low pressurecylinder. Chamber 13 formed by pistons 5 and 6 is constantly open to a passage 11 leading to the top of the low pressure. pump cylinder. Chamber 15 formed by pistons 6 and 7 is constantly open to the steam supply passage 10.

According tomy improvement a number of grooves 17 are provided in the bushing 18 of piston 8, said grooves being somewhat longer than the width of the piston and so located that upon movement of the piston valve mechanism toward the left, a point is reached at which communication is estab lished through said grooves around the piston 3 from the chamber 9 to the chamber19 at the outer face of said piston. A restricted passage 20 also leads from said chamber 19 to exhaust port 12.

The piston valve mechanism is operated in the usual manner by means of a valve device operated by the pump pistons for ad mitting and releasing steam to and from the chamber 21 at the outer face of piston 7, and as this mechanism forms no part of the present improvement and is not essential to a clear understanding of the operation of said improvement, for the sake of simplicity, said controlling valve device is not shown in the drawing.

In operation, when steam is admitted to the chamber 21, the piston valve mechanism 1 is thereby shifted toward the left and upon reaching the position shown in Fig. 1, communication is established from the chamber 9, containing steam under pressure, to chamber 19.

As the flow of steam from chamber 9 into chamber 19 is much greater than can be taken care of by the restricted exhaust passage 20, the steam pressure builds up rapidly in the chamber 19 and acting on the face of piston 3 tends to retard the movement of the piston valve mechanism 1. Upon further movement of the valve piston mechanism, the piston 3 closes the exhaust passage 20 and the steam pressure is sealed in chamber 19. By this means the piston 3 is prevented from pounding on the cylinder head, thus eliminating the possibility of breakage.

Having now described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a steam pump, the combination with a fluid actuated piston valve mechanism comprising a plurality of pistons for controlling the admission and exhaust of steam to and from the pump cylinders, of an additional piston carried by said valve mechanism and constantly subject on one side to steam pressure and having a chamber on the opposite side and ports controlled by said piston and in position to be opened near the end of the outward stroke of the piston into the chamber for supplying steam from the steam side of the piston to said chamber. 2. In a steam pump, the combination with a fluid actuated piston valve mechanism comprising a plurality of pistons for controlling the admission and exhaust of steam to and from the pump cylinders, of an additional piston mounted on one end of said valve mechanism and subject on the inner side to steam pressure and on the outer side to the pressure of a chamber, ports controlled by said piston for connecting the steam pressure side or" the piston with said chamber near the end of the outward stroke thereof as the piston recedes from the steam pressure side, and an exhaust port leading into said chamber.

'3. In a steam pump, the combination With a fluid actuated piston valve mechanism comprising a plurality of pistons for controlling the admission and exhaust of steam to and from the pump cylinders, of an additionalpiston mounted on one end of said valve mechanism and subject on the inner side to steam pressure and on the outer side to the pressure of a chamber, ports controlled by said piston for connecting the Copies of this patent may be obtained for steam pressure side of the piston with said chamber near the end of the outward stroke thereof, and a restricted exhaust port leading into said chamber and adapted to be closed by a further outward movement of said piston.

4. In a steam pump, the combination with a fluid actuated piston valve mechanism WALTER V. TURNER.

Witnesses:

A. M. CLEMENTS, CLYDE V. MCCURDY.

five cents each, by addressing the Commissioner of Patents.

Washington, D. C.

US1912697722 1912-05-16 1912-05-16 Steam-pump device. Expired - Lifetime US1131182A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US1912697722 US1131182A (en) 1912-05-16 1912-05-16 Steam-pump device.

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Application Number Priority Date Filing Date Title
US1912697722 US1131182A (en) 1912-05-16 1912-05-16 Steam-pump device.

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US1131182A true US1131182A (en) 1915-03-09

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US1912697722 Expired - Lifetime US1131182A (en) 1912-05-16 1912-05-16 Steam-pump device.

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2459148A (en) * 1944-09-20 1949-01-18 Niels A Christensen Fluid control apparatus
US2845092A (en) * 1954-10-04 1958-07-29 Donald R Vomacka Valve system for water softeners
US3283667A (en) * 1959-05-22 1966-11-08 Hansa Bryggeri As Combination fluid actuated means and control valve
US3504707A (en) * 1967-04-26 1970-04-07 Alan C Brooks Coaxial cylinder operated 5-ported double acting poppet valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2459148A (en) * 1944-09-20 1949-01-18 Niels A Christensen Fluid control apparatus
US2845092A (en) * 1954-10-04 1958-07-29 Donald R Vomacka Valve system for water softeners
US3283667A (en) * 1959-05-22 1966-11-08 Hansa Bryggeri As Combination fluid actuated means and control valve
US3504707A (en) * 1967-04-26 1970-04-07 Alan C Brooks Coaxial cylinder operated 5-ported double acting poppet valve

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