CN101922582A - Mute steam blow through valve - Google Patents
Mute steam blow through valve Download PDFInfo
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- CN101922582A CN101922582A CN 201010231103 CN201010231103A CN101922582A CN 101922582 A CN101922582 A CN 101922582A CN 201010231103 CN201010231103 CN 201010231103 CN 201010231103 A CN201010231103 A CN 201010231103A CN 101922582 A CN101922582 A CN 101922582A
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- valve
- stainless steel
- sealing ring
- valve rod
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Abstract
The invention relates to a mute steam blow through valve which comprises a valve body, a hand wheel, a valve rod, a valve element, a valve rod cap, a press cap and a dual sealing assembly, wherein the lower end port of a valve cavity in the middle of the valve body is provided with a washer; the dual sealing assembly comprises a coiled spring, an upper graphite stainless steel sealing ring, a valve element sleeve and a lower graphite stainless steel sealing ring which are sequentially sleeved on the valve element and then loaded in the valve cavity in the middle of the valve body; the upper graphite stainless steel sealing ring and the lower graphite stainless steel sealing ring are respectively and tightly matched with the inner wall of the valve cavity in the middle of the valve body; the press cap is sleeved on the valve rod, and a cap bolt is fixed on the valve body; the lower end surface of the lower graphite stainless steel sealing ring is abutted against the washer, the lower end surface of the upper graphite stainless steel sealing ring is abutted against the valve element sleeve, and the lower end of the coiled spring is abutted against the upper graphite stainless steel sealing ring; the upper end of the coiled spring is abutted against the press cap; the valve rod cap is sleeved on the valve rod and connected with the outer wall of the press cap through a thread; and a nut is screwed at the upper end of the valve rod. The mute steam blow through valve has the advantages of good sealing property and long service life.
Description
Technical field
The present invention relates to valve, particularly relate to a kind of novel mute steam blow through valve.
Background technique
The marine vapor pipeline; in annex and the steam turbine; at heating coil; retain certain steam-water mixture when warming-up and shutdown; for these steam-water mixtures are blown down to the hot well unit; need to use the steam blow through valve to blow down; and the standard stop valve that uses at present is when steam blows down; when high speed carbonated drink mixed flow is flowed through valve; air-flow is from flap; around the valve seat after the flow valves; producing multiple instability near valve port flows; as jet flow; the boundary layer separated flow; swirling flow; shock wave or the like; these unstable flowing are the roots that produce very noisy, and it is big to blow down noise, causes pollution source of noise to the crewman.For this reason, develop novel mute steam blow through valve and solve this technical problem.
Summary of the invention
The technical problem to be solved in the present invention, provide a kind of mute steam blow through valve, solve former stop valve and blow down the big problem of noise, by to steam blow through valve principle, structure and noise analysis, see clearly the mechanism that vibration, noise produce, the utility theory analytical calculation designs blowing down valve, by with former stop valve comparative trial, under the steam flow of stipulating, pressure, the mute steam blow through valve discharged air noise of development newly can be reduced more than the 8dB (A).
The technological scheme that adopts is:
A kind of mute steam blow through valve, when guaranteeing, under the consistent prerequisite of height dimension, comprise valve body, gland, spool, valve rod block, valve rod, handwheel, valve cage, graphite stainless steel upper sealing ring, graphite stainless steel lower sealing ring and disc spring with the standard stop valve two end interface sizes of same specification, length dimension and valve wide open;
The bottom of the valve pocket in the middle part of valve body is equipped with pad, and spool is the stainless steel embolism, and valve cage is installed on spool, offers a plurality of parallel hole windows on the valve cage; Graphite stainless steel lower sealing ring, graphite stainless steel upper sealing ring and disc spring are installed on the spool successively, and are installed in the spool chamber; Fixedlying connected with spool in the valve rod lower end, and is an overall structure, and gland is sleeved on valve rod and the spool, and gland is fixedlyed connected with valve body by bolt; Graphite stainless steel lower sealing ring lower end is replaced on the pad of top, and graphite stainless steel lower sealing ring upper end is replaced on valve cage; Graphite stainless steel upper sealing ring lower end is replaced on the valve cage, and the disc spring lower end is replaced on the upper-end surface of graphite stainless steel upper sealing ring, and the upper end of disc spring is replaced on gland; The valve rod block has internal thread, and the valve rod block is connected with gland with screw thread, and valve rod block upper end is connected with the handwheel solid welding; Valve rod block upper end is provided with valve rod block pad, and the valve gap upper end is installed with nut after passing the valve rod block.
Described valve cage is taked out the form of many parallel holes seam windows through sufficient theoretical calculation, and this sleeve design makes the turbulivity minimum, and the velocity distribution ideal in the breathing space can effectively reduce noise.The valve seal part that the upper and lower graphite stainless steel sealing ring of two novelties and disc spring assembly have been formed valve, the graphite stainless steel sealing ring of bottom prevent to leak in the steam to export pipeline, and the graphite stainless steel sealing ring on top prevents that steam from leaking outside to the cabin.Disc spring makes the upper and lower part seal ring be in pressured state by spring force always, the seal ring of pressurized has guaranteed and spool (being plunger) and valve body between from motive sealing.The upper and lower part seal ring has been formed the valve seat part of low noise steam blow through valve.The structural type that this disc spring adds double-sealing had both guaranteed valve internal and outside sealing, had guaranteed that again valve still can keep long-term use under the situation of expanding with heat and contract with cold, prolonged the working life of valve.Spool partly adopts the form of stainless steel plunger, and this structural type without spin, has just prevented impurity damage spool in the steam and fitting surface between seal ring between spool and the seal ring when switch valve, effectively guarantee sealing.The valve rod block adopts the internal thread enclosed construction, and the valve rod of band plunger did not rotate when this structural type had both guaranteed switch valve, can prevent that again dirt from entering the valve stem seal place, prevented corrosion.
The good effect that the present invention obtains is:
1, the present invention is blown down valve as marine vapor, compares with the standard stop valve of same specification, and its discharged air noise can reduce more than the 8dB (A), can effectively solve standard stop valve peculiar to vessel and blow down noise causes pollution source of noise greatly to the crewman technical problem.
2, good seal performance of the present invention, long service life has very high reliability.
3, the standard stop valve of length of the present invention and interface size and same specification is in full accord, has very high interchangeability.
4, the present invention is easy to maintenance, in case leakage phenomenon occurs, by evenly tightening gland bolt, leakage phenomenon will be eliminated.If because long-term the use when causing the seal ring Damage and Failure need not be removed valve from pipeline, can on pipeline, directly replace with easily, lower sealing ring, has very strong maintenance.
Description of drawings
Fig. 1 is an a kind of embodiment's of the present invention valve open mode schematic representation.
Fig. 2 is the A-A view of Fig. 1.
Fig. 3 is a valve closed condition schematic representation.
Embodiment
A kind of mute steam blow through valve comprises valve body 13, handwheel 1, valve rod 6, spool 14, valve rod block 4, gland 5 and double-sealing assembly, is provided with packing ring 11 at the valve pocket 15 lower end mouth places at valve body 12 middle parts;
The double-sealing assembly is made up of disc spring 7, graphite stainless steel upper sealing ring 8, valve cage 9 and graphite stainless steel lower sealing ring 10, in the valve pocket 15 at valve body 12 middle parts of packing into after being sleeved on the spool 14 successively; Graphite stainless steel lower sealing ring 10 and graphite stainless steel upper sealing ring 8 closely cooperate with the inwall of the valve pocket 15 at valve body 12 middle parts respectively; Gland 5 is sleeved on the valve rod 6, and lid pressed bolt 13 to be fixed on the valve body 12; Graphite stainless steel lower sealing ring 10 lower end surfaces are replaced on packing ring 11, and the lower end surface of graphite stainless steel upper sealing ring 8 is replaced on valve cage 9, and the lower end of disc spring 7 is replaced on graphite stainless steel upper sealing ring 8.The upper end of disc spring 7 is replaced on gland 5; Valve rod block 4 is sleeved on the valve rod 6, and be connected with gland 5 outer walls with screw thread, fixedly connected in handwheel 1 and valve rod 4 upper ends of blocking a shot, be installed with nut 2 in the valve rod upper end, the graphite stainless steel sealing ring is upper and lower to be prevented to leak in the steam to export pipeline, and the graphite stainless steel sealing ring 8 on top prevents that steam from leaking outside to the cabin.Disc spring 7 makes the upper and lower seal ring 8,10 of graphite stainless steel be in pressured state by spring force always, the seal ring of pressurized has guaranteed and 12 of valve rod (being the valve rod plunger) 6 and valve bodies from motive sealing.The structural type that this disc spring adds double-sealing had both guaranteed valve internal and outside sealing, had guaranteed that again valve still can keep long-term use under the situation of expanding with heat and contract with cold, prolonged the working life of valve.
On valve cage 9, offer a plurality of parallel hole seam windows 3.This sleeve design makes the turbulivity minimum, the velocity distribution ideal in the breathing space, and when valve was in opening state, vapour one aqueous mixtures that retains in steam pipework, annex and the steam turbine blew down out valve through valve cage 9, can effectively reduce noise.The handwheel 1 of rotation and valve rod block 4 welding one makes valve rod block 4 and gland 5 by screw thread generation relative movement, moves up and down and realizes the keying of valve thereby drive valve rod 6.Valve rod block 4 adopts the internal thread enclosed construction, and the valve rod of band plunger did not rotate when this structural type had both guaranteed switch valve, can prevent that again dirt from entering the valve stem seal place, prevented corrosion.Valve rod 6 spools partly adopt the form of stainless steel plunger, and this structural type without spin, has just prevented impurity damage spool in the steam and fitting surface between seal ring between spool and the seal ring when switch valve, effectively guarantee sealing.
Comparative trial
Adopt steam to dispose test-bed as test(ing) medium, carry out the present invention and same specification standard stop valve carries out the airborne noise comparative trial, to test valve and place acoustic enviroment to test quiet case, measure the discharged air noise of testing the steam blow through valve by the microphone that is built in the test chamber as the noise radiation source.By regulating the inlet pressure P that reduction valve makes testpieces steam blow through valve
1Respectively at 0.3MPa, 0.6MPa, 1.0MPa, 1.5MPa, 2.0MPa, 2.5MPa, carry out the airborne noise comparative trial under the valve wide open state under six kinds of pressure working conditions, standard stop valve discharged air noise is respectively: 58.6dB (A), 59.9dB (A), 62.8dB (A), 63.7dB (A), 66.2dB (A), 67.8dB (A), mute steam blow through valve discharged air noise of the present invention is respectively: 50.4dB (A), 51.5dB (A), 53.4dB (A), 54.5dB (A), 56.3dB (A), 57.7dB (A), under six kinds of pressure working conditions, the discharged air noise of the present invention 8.2dB (A) that descends respectively, 8.4dB (A), 9.4dB (A), 9.2dB (A), 9.9dB (A), blow down noise causes pollution source of noise greatly to the crewman technical problem 10.1dB (A), efficiently solve standard stop valve peculiar to vessel.
Blow down on the test-bed at same steam, regulate the inlet pressure P that reduction valve makes testpieces steam blow through valve
1At 2.5MPa, the test of hunting leak during sub valve switch 10,25,50,100,1000,1500,2000,2500,3000,3500,4000 times.During the standard stop valve switch of same specification 25 times, the standard stop valve begins to leak, and during switch 50 times, a large amount of leakages of standard stop valve steam can't continue to use.And the steam leakage phenomenon appears in the present invention when valve switch 3000 times, by evenly tightening gland bolt, leakage phenomenon is eliminated, the steam leakage phenomenon appears when switch 3500 times once more, evenly tighten gland bolt once more, leakage phenomenon is eliminated once more, steam leakage when switch 4000 times, tighten gland bolt once more, leaked steam reduces and can't eliminate.Comparative trial shows that working life of the present invention is considerably beyond the standard shutoff valve.
Claims (2)
1. a mute steam blow through valve comprises valve body (13), handwheel (1), valve rod (6), spool (14), valve rod block (4), gland (5) and double-sealing assembly, is provided with packing ring (11) at valve pocket (15) the lower end mouth place at valve body (12) middle part;
The double-sealing assembly is made up of disc spring (7), graphite stainless steel upper sealing ring (8), valve cage (9) and graphite stainless steel lower sealing ring (10), is sleeved on successively in the valve pocket (15) at valve body (12) middle part of packing into after spool (14) is gone up; Graphite stainless steel lower sealing ring (10) and graphite stainless steel upper sealing ring (8) closely cooperate with the inwall of the valve pocket (15) at valve body (12) middle part respectively; Gland (5) is sleeved on the valve rod (6), and lid pressed bolt (13) to be fixed on the valve body (12); Graphite stainless steel lower sealing ring (10) lower end surface is replaced on packing ring (11), and the lower end surface of graphite stainless steel upper sealing ring (8) is replaced on valve cage (9), and the lower end of disc spring (7) is replaced on graphite stainless steel upper sealing ring (8); The upper end of disc spring (7) is replaced on gland (5); Valve rod block (4) is sleeved on the valve rod (6), and is connected with gland (5) outer wall with screw thread, and handwheel (1) is fixedlyed connected with valve rod block (4) upper end, is installed with nut (2) in the valve rod upper end.
2. a kind of mute steam blow through valve according to claim 1 is characterized in that: offer a plurality of parallel hole seam windows (3) on the valve cage (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010231103 CN101922582A (en) | 2010-07-20 | 2010-07-20 | Mute steam blow through valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010231103 CN101922582A (en) | 2010-07-20 | 2010-07-20 | Mute steam blow through valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101922582A true CN101922582A (en) | 2010-12-22 |
Family
ID=43337685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010231103 Pending CN101922582A (en) | 2010-07-20 | 2010-07-20 | Mute steam blow through valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101922582A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295793A (en) * | 2014-08-29 | 2015-01-21 | 苏州福润机械有限公司 | Rust-proof valve |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4773442A (en) * | 1984-09-26 | 1988-09-27 | Sereg S.A. | Globe valve having a dismountable seat for rapid maintenance |
| CN88207370U (en) * | 1988-06-25 | 1988-12-28 | 北京市劳动保护科学研究所 | Low noise valve |
| GB2213286A (en) * | 1987-12-04 | 1989-08-09 | Gestra Ag | Throttle valve |
| CN1050082A (en) * | 1989-08-24 | 1991-03-20 | 基斯通国际集团公司 | The decompression and the modulating valve that have improved |
| CN2929373Y (en) * | 2006-05-08 | 2007-08-01 | 张峰国 | Low noise low cavitation regulating valve |
| CN201096195Y (en) * | 2007-05-16 | 2008-08-06 | 无锡市亚迪流体控制技术有限公司 | Strong sealing control valve |
| CN201363431Y (en) * | 2009-01-24 | 2009-12-16 | 天津丹福斯阀门有限公司 | Quick-service throttling cut-off valve |
| CN101699106A (en) * | 2009-10-29 | 2010-04-28 | 黄育进 | Cut-off control valve |
| CN201731162U (en) * | 2010-08-24 | 2011-02-02 | 成都凯天电子股份有限公司 | Blow off valve of corrugated pipe |
-
2010
- 2010-07-20 CN CN 201010231103 patent/CN101922582A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4773442A (en) * | 1984-09-26 | 1988-09-27 | Sereg S.A. | Globe valve having a dismountable seat for rapid maintenance |
| GB2213286A (en) * | 1987-12-04 | 1989-08-09 | Gestra Ag | Throttle valve |
| CN88207370U (en) * | 1988-06-25 | 1988-12-28 | 北京市劳动保护科学研究所 | Low noise valve |
| CN1050082A (en) * | 1989-08-24 | 1991-03-20 | 基斯通国际集团公司 | The decompression and the modulating valve that have improved |
| CN2929373Y (en) * | 2006-05-08 | 2007-08-01 | 张峰国 | Low noise low cavitation regulating valve |
| CN201096195Y (en) * | 2007-05-16 | 2008-08-06 | 无锡市亚迪流体控制技术有限公司 | Strong sealing control valve |
| CN201363431Y (en) * | 2009-01-24 | 2009-12-16 | 天津丹福斯阀门有限公司 | Quick-service throttling cut-off valve |
| CN101699106A (en) * | 2009-10-29 | 2010-04-28 | 黄育进 | Cut-off control valve |
| CN201731162U (en) * | 2010-08-24 | 2011-02-02 | 成都凯天电子股份有限公司 | Blow off valve of corrugated pipe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295793A (en) * | 2014-08-29 | 2015-01-21 | 苏州福润机械有限公司 | Rust-proof valve |
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Application publication date: 20101222 |