IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0039343
(2002-01-04)
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발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
1 인용 특허 :
60 |
초록
▼
A steam conditioning system including a steam conditioning valve 1 for depressurizing and desuperheating steam S by supplying moisture W in the conditioning valve. A discharge pipe 3 connected to the steam conditioning valve 1 has a horizontal section 3 a , and the horizontal arrangement section 3
A steam conditioning system including a steam conditioning valve 1 for depressurizing and desuperheating steam S by supplying moisture W in the conditioning valve. A discharge pipe 3 connected to the steam conditioning valve 1 has a horizontal section 3 a , and the horizontal arrangement section 3 a is provided with a moisture drain 4 or at a portion near the bottom. Condensed moisture W 1 is extracted from this moisture drain 4 and is recycled as moisture W to be supplied to the steam S in the conditioning valve 1 . The steam conditioning valve 1 further has a reduced annular section 9 with a nozzle 5 a disposed therein for injecting subcooled water mist W. A transport conduit 5 connects the drain 4 to nozzle 5 a . Moisture W is drawn into steam flow S due to the Venturi effect caused by the pressure drop through the reduced annular section 9.
대표청구항
▼
1. A steam conditioning system having:a steam conditioning valve for depressurizing and desuperheating superheated steam by supplying moisture thereto;a discharge pipe connected to a discharge end of the steam conditioning valve, the discharge pipe comprising:a horizontal section being provided with
1. A steam conditioning system having:a steam conditioning valve for depressurizing and desuperheating superheated steam by supplying moisture thereto;a discharge pipe connected to a discharge end of the steam conditioning valve, the discharge pipe comprising:a horizontal section being provided with a moisture drain in proximity to the bottom of the horizontal section, anda vertical section between the steam conditioning valve and the horizontal section;a nozzle for injecting a water mist into a lower portion of the steam conditioning valve; anda conduit for connecting said nozzle to said drain for transporting condensed water to said nozzle. 2. The steam conditioning system of claim 1 wherein the nozzle has an opening exiting into an annular reduction in the longitudinal cross-section of the lower portion of said valve, wherein moisture is drawn from the discharge pipe drain through the transport conduit and out the nozzle exit into the conditioning valve due to Venturi effect in the annular reduction of the valve. 3. A steam pressure reducing and conditioning system operable to be connected between a steam source and a steam work section, the system comprising:a valve having an inlet and an outlet, the inlet receiving superheated steam from the steam source;a discharge pipe having a proximal end, a distal end, a vertical portion between the ends, and a horizontal portion between the vertical portion and the distal end, the proximal end being connected to the valve outlet and the distal end supplying steam to the steam work section; anda transport conduit connecting the horizontal portion of the discharge pipe to the valve. 4. The system of claim 3, wherein the valve comprises a reduced annular section and a nozzle disposed in the reduced annular section relative to the discharge pipe, whereby steam flowing through the reduced annular section will flow faster than steam through the discharge pipe, and wherein the transport conduit is connected to the nozzle of the valve, whereby moisture is drawn through the transport conduit from the horizontal portion of the discharge pipe into the valve due to the reduced annular section in the valve. 5. The system of claim 3, comprising a forced delivery apparatus connected to the transport conduit for delivering moisture to the valve from the horizontal portion of the discharge pipe. 6. A steam pressure reducing and conditioning system operable to be connected between a steam source and a steam work section, the system comprising:a valve having an inlet and an outlet, the inlet receiving superheated steam from the steam source; anda discharge pipe having a proximal end, a distal end, a vertical portion between the ends, and a horizontal portion between the vertical portion and the distal end, wherein the proximal end is connected to the valve outlet, the distal end supplies steam to the steam work section and the horizontal portion comprises a drain. 7. The system of claim 6, wherein the horizontal portion comprises a bottom portion and the drain is positioned in the bottom portion. 8. The system of claim 6, comprising recycling means connecting the drain and the valve for transporting moisture from the horizontal portion of the discharge pipe to the valve. 9. The system of claim 6, comprising a transport conduit connecting the valve and the drain. 10. The system of claim 9, wherein the discharge pipe has a predetermined area through which steam flows and the valve has a reduced area, relative to the predetermined area of the discharge pipe, through which steam flows faster than through the predetermined area of the discharge pipe. 11. The system of claim 10, wherein the valve comprises one or more nozzles in the reduced area of the valve and the transport conduit is connected to the one or more nozzles, whereby moisture is drawn through the transport conduit from the drain to the one or more nozzles due to the reduced area of the valve. 12. A steam pressure reducing and conditioning sy stem operable to be connected between a steam source and a steam work section, the system comprising:a valve having an inlet and an outlet, the inlet receiving superheated steam from the steam source, the valve comprising:an annular section having a diameter, anda nozzle in the annular section for injecting mist into the valve;a discharge pipe having a proximal end connected to the valve outlet, a distal end supplying steam to the steam work section and a portion having a predetermined diameter between the ends,the diameter of the portion larger than the diameter of the annular section such that moisture is drawn from the discharge pipe to the nozzle due to the difference in diameters. 13. The system of claim 12, comprising:a transport conduit connecting the portion of the discharge pipe with the nozzle. 14. The system of claim 13, wherein the discharge pipe comprises a vertical portion between the proximal end and the portion of the discharge pipe, and the portion of the discharge pipe is horizontal and comprises a drain to the transport conduit. 15. A method of operating a steam pressure reducing and conditioning system, the method comprising:receiving in an inlet of a valve superheated steam;cooling the superheated steam passing through the valve;receiving moisture in a horizontal portion of a discharge pipe connected to the valve the discharge pipe comprising a vertical portion between the horizontal portion and the valve;removing condensed moisture from the horizontal portion; andtransporting the removed condensed moisture to the valve for cooling the superheated steam. 16. The method of claim 15, comprising supplying the removed condensed moisture to the superheated steam passing through the valve. 17. The method of claim 16, wherein supplying the removed condensed moisture to the superheated steam passing through the valve comprises injecting the removed condensed moisture into the valve. 18. The method of claim 17, wherein supplying the removed condensed moisture to the superheated steam passing through the valve comprises misting the superheated steam with the removed condensed moisture. 19. The method of claim 15, wherein removing the condensed moisture from the horizontal portion comprises creating a pressure differential between an area in the valve and an area in the discharge pipe, whereby the condensed moisture is drawn into the valve. 20. The method of claim 15, wherein removing the condensed moisture comprises draining the condensed moisture from the horizontal portion into a transport conduit connected to the valve.
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