US635148A - Combined feed and stop valve, & c. - Google Patents
Combined feed and stop valve, & c. Download PDFInfo
- Publication number
- US635148A US635148A US1899724501A US635148A US 635148 A US635148 A US 635148A US 1899724501 A US1899724501 A US 1899724501A US 635148 A US635148 A US 635148A
- Authority
- US
- United States
- Prior art keywords
- valve
- stop valve
- combined feed
- water
- feed
- 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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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/30—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers
- F16K1/307—Additional means used in combination with the main valve
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87917—Flow path with serial valves and/or closures
- Y10T137/88054—Direct response normally closed valve limits direction of flow
Definitions
- HERMANN SCHMIDT manufacturer, residing at 62 I'Ierderstrasse, and GUSTAV LEIDENROTH, engineer, residing at 22 Admiralitafstrasse, Hamburg, in the German Empire, subjects of the Emperor of Germany, have invented new and useful Im* provenients in a Combined Feed and Stop Valve with a Guide for the Return-Water Current, of which the following is a specifi. cation. i
- the aforementioned disadvantages are obviated in the im- ⁇ proved combination-valve by reducing the space between the stopvalve and the nonreturn valve to a minimum owing to the latter valve being arranged'in the casing of the stop-valve. Furthermore, the blow from the reduced quantity of water is avoided by causing the return-current to flow in a direction along a guide-wall exactly central, but opposite that of the closing of the valve. In this manner the working of the valve is noiseless -and greater durability is insured.
- the part a is connected with the feed-pipe and the end t with the steam-boiler.
- the valve c of the stop-valve is adapted to be pressed upon its seat by means of the spindle CZ and hand-wheel e or to be lifted off its seat by the same to open the valve.
- the non-return valve f is guided from below and above, as shown, and is formed with a double contactsurface, so as to reduce its stroke, this hav ing beenfound to be of particular advantage with regard to the motion of the returning' water relatively to the downstroke of the non-4 return valve, as has already before been mentioned.
- the water from the feedepipe enters the valve-casing at a and flows through the side passages g g', Fig. 1, into the annular space h and after lifting the valvef passes into the spaces QI andy', Fig. l, and thence through the passageZ into the boring j, the open stopL valve c, and space t into the boiler.
- Fig. 2 is a cross-section along the and the stop Valve in a single Casing forthe l opposite direction to the downwardly-moving lo purpose of reducing the Volume of water befeed-valve. tween the boiler and feed-valve at the eom- In testimony whereof We afxoursignatures Ineneement of the suction-stroke, the arin presence of two witnesses. l 5 rangement being such that the line force of HERMANN SCHMIDT.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Turbines (AREA)
Description
No. 635-,|48. Patented Oct. I7, |899.
H. SCHMIDT &. G. LEIDENRDTH. COMBINED FEED AND STOP VALVE, c.
(Application led July 20, 1899.) (llo Model.)
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HERMANN SCHMIDT AND GUSTAV LEIDENROTI-I, OF HAMBURG, GERMANY.
COMBINED FEED AND STOF VALVE, ne.
SPECIFICATION forming part of Letters Patent No. 635,148, dated October 17, 1899.
Serial No. 724,501. (No model.)
To all whom, t Uta/y concern.-
Be it known that we, HERMANN SCHMIDT, manufacturer, residing at 62 I'Ierderstrasse, and GUSTAV LEIDENROTH, engineer, residing at 22 Admiralitafstrasse, Hamburg, in the German Empire, subjects of the Emperor of Germany, have invented new and useful Im* provenients in a Combined Feed and Stop Valve with a Guide for the Return-Water Current, of which the following is a specifi. cation. i
As is well known, in the feed-water supply for steam-boilers there is alwaysa non-return valve, (feed-valve,) and between vthis valve and the boiler there is arranged a stop or cutoff valve, which can be closed for the purpose of enabling the non-return valve to be inspected when required to remedy any irregularity in the working. In connection with this arrangement there is, however, the objectionable feature' that at the moment when the forcing action of the feed-pump is reversed into suction the column of water between the boiler and non return valve is thrown against the valve owing to the action ofthe higher pressure in the boiler.- These blows given by the water occur continuously during the working of the feed-pump, and they are the stronger the higher the steam? pressure in the boiler, and they notonly cause a speedy deterioration of the valve and its seat, but they are also responsible for the imperfect working of the valve, the disadvantageous effect increasing directly with higher boiler-pressure and with the quantity of water thrown back during the change of the stroke of the pump-plunger.
According to this invention the aforementioned disadvantages are obviated in the im-` proved combination-valve by reducing the space between the stopvalve and the nonreturn valve to a minimum owing to the latter valve being arranged'in the casing of the stop-valve. Furthermore, the blow from the reduced quantity of water is avoided by causing the return-current to flow in a direction along a guide-wall exactly central, but opposite that of the closing of the valve. In this manner the working of the valve is noiseless -and greater durability is insured.
In carrying our invention into effect the part a is connected with the feed-pipe and the end t with the steam-boiler. The valve c of the stop-valve is adapted to be pressed upon its seat by means of the spindle CZ and hand-wheel e or to be lifted off its seat by the same to open the valve. The non-return valve f is guided from below and above, as shown, and is formed with a double contactsurface, so as to reduce its stroke, this hav ing beenfound to be of particular advantage with regard to the motion of the returning' water relatively to the downstroke of the non-4 return valve, as has already before been mentioned.
The water from the feedepipe enters the valve-casing at a and flows through the side passages g g', Fig. 1, into the annular space h and after lifting the valvef passes into the spaces QI andy', Fig. l, and thence through the passageZ into the boring j, the open stopL valve c, and space t into the boiler. The v0l= ume of Water between the boiler and non-return valve thrown back at the commencement of the suction-stroke cannot strike' against the valve, but itsline force is directed along the guide-wall m, formed by the central space j of the valve-casing, onto the cover 7c, while the waves which travel upward through the passage Z in opposition to the downward motion of the valve f allow this 'latter to close gradually and without noise.
valve, and Fig. 2 is a cross-section along the and the stop Valve in a single Casing forthe l opposite direction to the downwardly-moving lo purpose of reducing the Volume of water befeed-valve. tween the boiler and feed-valve at the eom- In testimony whereof We afxoursignatures Ineneement of the suction-stroke, the arin presence of two witnesses. l 5 rangement being such that the line force of HERMANN SCHMIDT.
' the returning water is directed onto the Cover GUSTAV LEIDENROTH.
7c by a guide, formed by the upper wall part Witnesses: m ofthe space jwhile thewaves, which travel E. H. L. MMMENHOFF, upward through the passage Z flow in the OTTO W. HELLMINK.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1899724501 US635148A (en) | 1899-07-20 | 1899-07-20 | Combined feed and stop valve, & c. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1899724501 US635148A (en) | 1899-07-20 | 1899-07-20 | Combined feed and stop valve, & c. |
Publications (1)
Publication Number | Publication Date |
---|---|
US635148A true US635148A (en) | 1899-10-17 |
Family
ID=2703739
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US1899724501 Expired - Lifetime US635148A (en) | 1899-07-20 | 1899-07-20 | Combined feed and stop valve, & c. |
Country Status (1)
Country | Link |
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US (1) | US635148A (en) |
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1899
- 1899-07-20 US US1899724501 patent/US635148A/en not_active Expired - Lifetime
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