閥門通徑和介質流速之間的關系分析-上海良工閥門廠有限公司 咨詢熱線:400-080-5810_冠亚电竞

yabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/ggscyd/2018-06-19/doc-iheauxvz7195109.shtmlyabo官网【yabopk10.com】:https://it.sohu.com/20160827/n466297584.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/ggscyd/2018-06-19/doc-iheauxvz7195109.shtmlyabo官网【yabopk10.com】:http://m.cctv.com/dc/n/index.shtml?articalID=ARTI1gR7ULI3tN1bULdS9cMf160311&code=860010-1145020100yabo官网【yabopk10.com】:https://tech.china.com/news/11146418/20160828/23403995.htmlyabo官网【yabopk10.com】:http://sports.sina.com.cn/l/2010-11-02/14525284668.shtmlyabo官网【yabopk10.com】:https://finance.ifeng.com/c/7m707slpXZYyabo官网【yabopk10.com】:https://games.qq.com/a/20180420/024083.htmyabo官网【yabopk10.com】:http://news.ifeng.com/a/20170503/51036922_0.shtmlyabo官网【yabopk10.com】:https://sports.163.com/10/1220/10/6OBF6IPL00051CBI.htmlyabo官网【yabopk10.com】:http://finance.youth.cn/finance_jsxw/201705/t20170502_9636830.htmyabo官网【yabopk10.com】:http://news.sina.com.cn/c/2018-02-08/doc-ifyrkzqq9536226.shtmlyabo官网【yabopk10.com】:http://news.sina.com.cn/c/2018-02-08/doc-ifyrkzqq9536226.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/ggscyd/2018-03-19/doc-ifysmefx2133360.shtmlyabo官网【yabopk10.com】:http://news.sina.com.cn/z/wmd11n/yabo官网【yabopk10.com】:https://finance.ifeng.com/c/7ml1uNnpWo6yabo官网【yabopk10.com】:http://finance.ce.cn/rolling/201603/08/t20160308_9343027.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/ggscyd/2018-06-20/doc-ihefphqk4272047.shtmlyabo官网【yabopk10.com】:http://finance.ifeng.com/c/7sGqUogoP9gyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/relnews/hk/2020-03-20/doc-iimxyqwa2083427.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/roll/2020-03-21/doc-iimxxsth0652087.shtmlyabo官网【yabopk10.com】:http://finance.ce.cn/rolling/201603/08/t20160308_9343027.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/ggscyd/2018-06-06/doc-ihcqccip5521325.shtmlyabo官网【yabopk10.com】:http://money.163.com/keywords/6/4/674e56fd5b9d/1.htmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/ggscyd/2018-03-19/doc-ifysmefx2133360.shtmlyabo官网【yabopk10.com】:https://finance.sina.com.cn/stock/hkstock/ggscyd/20100908/15128624052.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/roll/2016-03-08/doc-ifxqafrm7193652.shtmlyabo官网【yabopk10.com】:http://finance.ifeng.com/hk/gs/20100909/2603347.shtmlyabo官网【yabopk10.com】:http://jingji.cntv.cn/20110329/108753.shtmlyabo官网【yabopk10.com】:https://finance.ifeng.com/c/7ml1uNnpWo6yabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/ggscyd/2019-03-12/doc-ihrfqzkc3145303.shtmlyabo官网【yabopk10.com】:http://finance.ifeng.com/c/7rZZyGaHFe6yabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/ggscyd/2018-06-20/doc-ihefphqk4272047.shtml?source=cj&dv=1yabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/relnews/hk/2020-03-20/doc-iimxyqwa2083427.shtmlyabo官网【yabopk10.com】:http://finance.ifeng.com/c/7mZJAP5LsOKyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/relnews/hk/2019-12-09/doc-iihnzahi6376234.shtmlyabo官网【yabopk10.com】:http://finance.qq.com/a/20120927/005909.htmyabo官网【yabopk10.com】:http://game.people.com.cn/n1/2018/0420/c48648-29940026.htmlyabo官网【yabopk10.com】:http://finance.qq.com/a/20120927/005909.htmyabo官网【yabopk10.com】:http://finance.ce.cn/rolling/201603/08/t20160308_9343027.shtmlyabo官网【yabopk10.com】:http://www.cankaoxiaoxi.com/finance/20180208/2254697.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/ggscyd/20131017/132817023893.shtmlyabo官网【yabopk10.com】:http://finance.ifeng.com/hk/sckx/20120424/6359471.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/relnews/hk/2019-07-24/doc-ihytcerm5860728.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/relnews/hk/2020-03-20/doc-iimxyqwa2083427.shtmlyabo官网【yabopk10.com】:http://finance.qq.com/a/20110329/005815.htmyabo官网【yabopk10.com】:http://game.people.com.cn/n1/2018/0420/c48648-29940026.htmlyabo官网【yabopk10.com】:http://games.sina.com.cn/y/n/2017-11-07/fynmnae2587926.shtmlyabo官网【yabopk10.com】:http://game.people.com.cn/n1/2018/0420/c48648-29940026.htmlyabo官网【yabopk10.com】:https://tech.ifeng.com/a/20160308/41559971_0.shtmlyabo官网【yabopk10.com】:https://sports.sohu.com/20070823/n251741241.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/ggscyd/20131017/132817023893.shtmlyabo官网【yabopk10.com】:http://sports.sina.com.cn/l/2017-03-24/doc-ifycstww1048292.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/hkstocknews/2019-03-11/doc-ihsxncvh1685662.shtmlyabo官网【yabopk10.com】:http://www.southcn.com/g/2016-03/08/default.htmyabo官网【yabopk10.com】:http://sports.sina.com.cn/l/2017-03-24/doc-ifycstww1048292.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/relnews/hk/2019-05-16/doc-ihvhiqax9181837.shtmlyabo官网【yabopk10.com】:https://it.sohu.com/20160827/n466297584.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/relnews/hk/2019-11-13/doc-iihnzhfy9035716.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/ggscyd/2018-06-06/doc-ihcqccip5521325.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/relnews/hk/2019-07-24/doc-ihytcerm5860728.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/relnews/hk/2019-10-11/doc-iicezuev1550624.shtmlyabo官网【yabopk10.com】:http://finance.ifeng.com/c/7rZZyGaHFe6yabo官网【yabopk10.com】:https://finance.china.com/domestic/11173294/20170502/30480483_all.htmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/ggscyd/2018-06-20/doc-ihefphqk4272047.shtmlyabo官网【yabopk10.com】:http://news.sina.com.cn/c/2018-02-08/doc-ifyrkzqq9536226.shtmlyabo官网【yabopk10.com】:https://tech.china.com/news/company/892/20160827/23400526.htmlyabo官网【yabopk10.com】:http://finance.qq.com/a/20110329/005815.htmyabo官网【yabopk10.com】:http://sports.sina.com.cn/l/2017-03-24/doc-ifycstww1048292.shtmlyabo官网【yabopk10.com】:https://sports.qq.com/a/20101221/000241.htmyabo官网【yabopk10.com】:http://game.people.com.cn/n1/2018/0420/c48648-29940026.htmlyabo官网【yabopk10.com】:https://finance.sina.com.cn/stock/relnews/hk/2019-08-28/doc-ihytcitn2643045.shtml

冠亚电竞

上海良工閥門科技有限公司
上海良工閥門廠有限公司 咨詢熱線:400-080-5810
全國客服熱線:159-2105-5205

159-2105-5205

閥門知識

閥門通徑和介質流速之間的關系分析

   閥門的流量與流速主要取決于閥門的通徑,也與閥門的結構型式對介質的阻力有關,同時與閥門的壓力、溫度及介質的濃度等諸因素有着一定内在聯系。

      閥門的流道面積與流速、流量有着直接關系,而流速與流量是相互依存的兩個量。當流量一定時,流速大,流道面積便可小些;流速小,流道面積就可以大些。反之,流道面積大,其流速小;流道面積小,其流速大。

     介質的流速大,閥門通徑可以小些,但阻力損失較大,閥門易損壞。流速大,對易燃易爆介質會産生靜電效應,造成危險;流速太小,效率低,不經濟。對粘度大和易爆的介質,應取較小的流速。油及粘度大的液體随粘度大小選擇流速,一般取0.1~2m/s。

      一般情況下,流量是已知的,流速可由經驗确定。通過流速和流量可以計算閥門的公稱通徑。

     閥門通徑相同,其結構型式不同,流體的阻力也不一樣。在相同條件下,閥門的阻力系數越大,流體通過閥門的流速、流量下降越多;閥門阻力系數越小,流體通過閥門的流速、流量下降越少。

各種介質常用流速見下表。

流體名稱

使用條件

流速 
  (m/s)

 

飽和蒸汽

DN>200
  DN=200~100
  DN<100

30~40
  25~35
  15~30

 

過熱蒸汽

DN>200
  DN=200~100
  DN<100

40~60
  30~50
  20~40

 
 

低壓蒸汽

ρ<1.0(絕壓)

15~20

 

中壓蒸汽

Ρ=1.0~4.0(絕壓)

20~40

 

高壓蒸汽

Ρ=4.0~12.0(絕壓)

40~60

 

壓縮氣體

真空 
  Ρ≤0.3(表壓) 
  Ρ=0.3~0.6(表壓) 
  Ρ=0.6~1.0(表壓) 
  Ρ=1.0~2.0(表壓) 
  Ρ=2.0~3.0(表壓) 
  Ρ=3.0~30.0(表壓)

5~10 
  8~12 
  10~20 
  10~15
  8~12
  3~6
  0.5~3

 
 
 
 

氧氣

Ρ=0~0.05(表壓) 
  Ρ=0.05~0.6(表壓) 
  Ρ=0.6~1.0(表壓) 
  Ρ=1.0~2.0(表壓) 
  Ρ=2.0~3.0(表壓)

5~10
  7~8
  4~6 
  4~5 
  3~4

 

煤氣

 

2.5~15

 

半水煤氣

Ρ=0.1~0.15(表壓)

10~15

 

天然氣

 

30

 

氮氣

Ρ=5~10(絕壓)

15~25

 

氨氣

真空 
  Ρ<0.3(表壓) 
  Ρ<0.6(表壓) 
  Ρ≤2(表壓)

15~25
  8~15
  10~20
  3~8

 
 
 
 

乙炔水

 

30
  5
~6

 
 

乙炔氣

ρ<0.01(表壓) 
  ρ<0.15(表壓) 
  ρ<2.5(表壓)

3~4
  4~8
  5

 

氣體 
  液體

10~25
  1.6

 

氯化氫

氣體 
  液體

20
  1.5

 

液氨

真空 
  Ρ≤0.6(表壓) 
  Ρ≤2.0(表壓)

0.05~0.3
  0.3~0.8
  0.8~1.5

 

氫氧化鈉

濃度0~30%
  濃度30%~505
  濃度50%~73%

2
  1.5
  1.2

 

硫酸

濃度88%~93%
  濃度93%~100%

1.2
  1.2

 

鹽酸

 

1.5

 

水及粘度
 相似液體

Ρ=0.1~0.3(表壓) 
  Ρ≤1.0(表壓) 
  Ρ≤8.0表壓) 
  Ρ≤20~30(表壓) 
  熱網循環水、冷卻水 
  壓力回水 
  無壓回水

0.5~2 
  0.5~3 
  2~3 
  2~3.5 
  0.3~1 
  0.5~2 
  0.5~1.2

 

自來水

主管Ρ=0.3(表壓) 
  支管Ρ=0.3(表壓)

1.5~3.5 
  1~1.5

 

鍋爐給水

 

>3

 

蒸汽冷凝水

 

0.5~1.5

 

冷凝水

自流

0.2~0.5

 

過熱水

 

2

 

海水、微堿水

Ρ<0.6(表壓)

1.5~2.5

 

注:

 

§DN值的單位為:mm;

§Ρ值的單位為:MPa。

§閘閥的阻力系數小,僅在0.1~1.5的範圍内、;
 

§口徑大的閘閥,阻力系數為0.2~0.5;

§縮口閘閥阻力系數大一些。 

§截止閥的阻力系數比閘閥大得多,一般在4~7之間。Y型截止閥(直流式)阻力系數最小,在1.5~2之間。

§鍛鋼截止閥阻力系數最大,甚至高達8。

§止回閥的阻力系數視結構而定:旋啟式止回閥通常約為0.8~2,其中多瓣旋啟式止回閥的阻力系數較大;

§升降式止回閥阻力系數最大,高達12。

§旋塞閥的阻力系數小,通常約為0.4~1.2。

§隔膜閥的阻力系數一般在2.3左右。

§蝶閥的阻力系數小,一般在0.5以内。

§球閥的阻力系數最小,一般在0.1左右。

§上述閥門的阻力系數是閥門全開狀态下的數值。

     閥門通徑的選用,應考慮到閥門的加工精度和尺寸偏差,以及其它因素影響。閥門通徑應有一定的富裕量,一般為15%。在實際的工作中,閥門通徑随工藝管線的通徑而定。

上一篇:手把手教你閥門的選型、維護及保養! 下一篇:沒有了

聯系我們

聯系人:林先生

手 機:159-2105-5205

電 話:159-2105-5205

郵 箱:44018025@qq.com

公 司:上海良工閥門科技有限公司

地 址:上海楊行工業園錦宏路68号

yabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/ggscyd/2018-01-29/doc-ifyqyqni4708162.shtml?source=cj&dv=1yabo官网【yabopk10.com】:https://sports.163.com/10/1220/10/6OBF6IPL00051CBI.htmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/ggscyd/2018-01-29/doc-ifyqyqni4708162.shtml?source=cj&dv=1yabo官网【yabopk10.com】:http://jingji.cntv.cn/20110524/103093.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/roll/2016-03-08/doc-ifxqafrm7193652.shtmlyabo官网【yabopk10.com】:https://finance.sina.com.cn/stock/relnews/hk/2019-07-23/doc-ihytcerm5574901.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/roll/2020-03-21/doc-iimxxsth0652087.shtmlyabo官网【yabopk10.com】:http://finance.qq.com/a/20110408/000075.htmyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/relnews/hk/2019-07-24/doc-ihytcerm5860728.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/roll/2016-03-09/doc-ifxpzzhk2579996.shtmlyabo官网【yabopk10.com】:https://news.online.sh.cn/news/gb/content/2019-06/21/content_9316991.htmyabo官网【yabopk10.com】:http://sports.sina.com.cn/l/2017-03-24/doc-ifycstww1048292.shtmlyabo官网【yabopk10.com】:http://finance.ifeng.com/c/7sZ7j855o2h?ivk_sa=1023197ayabo官网【yabopk10.com】:https://finance.china.com/domestic/11173294/20170502/30480483_all.htmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/relnews/hk/2019-11-13/doc-iihnzahi0663275.shtmlyabo官网【yabopk10.com】:http://finance.ifeng.com/c/7qCwssucfAFyabo官网【yabopk10.com】:http://finance.qq.com/a/20100908/004715.htmyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/relnews/hk/2019-10-11/doc-iicezzrr1576363.shtml?source=cj&dv=2yabo官网【yabopk10.com】:http://game.people.com.cn/n1/2018/0420/c48648-29940026.htmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/roll/2016-03-08/doc-ifxpzzhk2479714.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/relnews/hk/2019-05-07/doc-ihvhiews0420346.shtmlyabo官网【yabopk10.com】:http://finance.qq.com/a/20110329/005815.htmyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/hkstocknews/2019-03-11/doc-ihsxncvh1685662.shtmlyabo官网【yabopk10.com】:http://finance.qq.com/a/20100908/004715.htmyabo官网【yabopk10.com】:http://finance.sina.com.cn/roll/2020-03-21/doc-iimxxsth0652087.shtmlyabo官网【yabopk10.com】:http://news.cntv.cn/20101227/102492.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/ggscyd/2019-03-12/doc-ihrfqzkc3145303.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/ggscyd/2017-11-12/doc-ifynrsrf4033853.shtmlyabo官网【yabopk10.com】:http://games.sina.com.cn/y/n/2017-11-07/fynmnae2587926.shtmlyabo官网【yabopk10.com】:http://finance.ifeng.com/c/7sGqUogoP9gyabo官网【yabopk10.com】:http://finance.ifeng.com/c/7rZZyGaHFe6yabo官网【yabopk10.com】:https://sports.sohu.com/20150522/n413585502.shtmlyabo官网【yabopk10.com】:http://sports.sina.com.cn/l/2010-11-02/14525284668.shtmlyabo官网【yabopk10.com】:http://news.ifeng.com/a/20170503/51036922_0.shtmlyabo官网【yabopk10.com】:http://finance.ifeng.com/c/7qCwssucfAFyabo官网【yabopk10.com】:http://news.sina.com.cn/c/2018-02-08/doc-ifyrkzqq9536226.shtmlyabo官网【yabopk10.com】:http://sports.sina.com.cn/l/2017-03-24/doc-ifycstww1048292.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/relnews/hk/2019-12-09/doc-iihnzhfz4736353.shtmlyabo官网【yabopk10.com】:http://news.sohu.com/20070828/n251810719.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/roll/2016-03-09/doc-ifxpzzhk2579996.shtmlyabo官网【yabopk10.com】:http://finance.qq.com/a/20100909/002641.htmyabo官网【yabopk10.com】:http://news.ifeng.com/a/20170503/51036922_0.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/relnews/hk/2019-11-14/doc-iihnzhfy9144955.shtmlyabo官网【yabopk10.com】:http://sports.sina.com.cn/l/2015-11-12/doc-ifxkszhk0199675.shtmlyabo官网【yabopk10.com】:https://tech.qq.com/a/20170430/005032.htmyabo官网【yabopk10.com】:http://finance.ifeng.com/c/7v0KjxM79CByabo官网【yabopk10.com】:http://finance.ifeng.com/a/20160309/14258201_0.shtmlyabo官网【yabopk10.com】:http://finance.china.com.cn/news/special/jjsj2014-1/index.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/ggscyd/2018-03-19/doc-ifysmefx2133360.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/ggscyd/2018-02-05/doc-ifyremfz5019122.shtmlyabo官网【yabopk10.com】:http://sports.sina.com.cn/l/2015-11-12/doc-ifxkszhk0199675.shtmlyabo官网【yabopk10.com】:https://finance.sina.com.cn/stock/hkstock/ggscyd/20100908/15128624052.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/ggscyd/2018-01-29/doc-ifyqyqni4708162.shtml?source=cj&dv=1yabo官网【yabopk10.com】:http://m.cctv.com/dc/n/index.shtml?articalID=ARTI1gR7ULI3tN1bULdS9cMf160311&code=860010-1145020100yabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/ggscyd/2018-01-29/doc-ifyqyqni4708162.shtml?source=cj&dv=1yabo官网【yabopk10.com】:https://finance.ifeng.com/c/7ml1uNnpWo6yabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/relnews/hk/2019-11-13/doc-iihnzhfy9035716.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/relnews/hk/2019-12-09/doc-iihnzhfz4736353.shtmlyabo官网【yabopk10.com】:http://finance.ifeng.com/c/7oXzhFWg6WOyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/ggscyd/2017-01-19/doc-ifxzuswq2644495.shtmlyabo官网【yabopk10.com】:https://news.online.sh.cn/news/gb/content/2019-06/21/content_9316991.htmyabo官网【yabopk10.com】:http://news.sina.com.cn/z/wmd11n/yabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/relnews/hk/2019-05-07/doc-ihvhiews0420346.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/relnews/hk/2019-10-11/doc-iicezuev1550624.shtmlyabo官网【yabopk10.com】:http://sports.sina.com.cn/l/2015-11-12/doc-ifxkszhk0199675.shtmlyabo官网【yabopk10.com】:http://www.sport.gov.cn/n316/n343/n1196/c786665/content.htmlyabo官网【yabopk10.com】:http://jingji.cntv.cn/20110524/103093.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/ggscyd/2018-02-05/doc-ifyremfz5019122.shtmlyabo官网【yabopk10.com】:http://finance.ifeng.com/c/7rZZyGaHFe6yabo官网【yabopk10.com】:http://finance.ifeng.com/c/7qCwssucfAFyabo官网【yabopk10.com】:http://finance.sina.com.cn/roll/2016-03-07/doc-ifxpzzhk2433474.shtmlyabo官网【yabopk10.com】:http://finance.sina.com.cn/stock/hkstock/ggscyd/2018-02-05/doc-ifyremfz5019122.shtml

1号电竞

5794813931528874