CN101427058B - 抽吸阀 - Google Patents

抽吸阀 Download PDF

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CN101427058B
CN101427058B CN2006800543162A CN200680054316A CN101427058B CN 101427058 B CN101427058 B CN 101427058B CN 2006800543162 A CN2006800543162 A CN 2006800543162A CN 200680054316 A CN200680054316 A CN 200680054316A CN 101427058 B CN101427058 B CN 101427058B
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suction valve
shutoff device
pressure
bleeder
valve
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CN101427058A (zh
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V·罗波宁
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Pimatic Co ltd
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Polarteknik PMC Oy AB
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
    • F16K31/363—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor the fluid acting on a piston
    • 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
    • Y10T137/3367—Larner-Johnson type valves; i.e., telescoping internal valve in expanded flow line section
    • Y10T137/3421—Line condition change responsive
    • 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
    • Y10T137/3367—Larner-Johnson type valves; i.e., telescoping internal valve in expanded flow line section
    • Y10T137/3476—Internal servo-motor with internal pilot 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
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7758—Pilot or servo controlled
    • Y10T137/7762—Fluid pressure type
    • Y10T137/7764—Choked or throttled pressure type
    • Y10T137/7765—Pilot valve within main valve head
    • 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
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7758—Pilot or servo controlled
    • Y10T137/7762—Fluid pressure type
    • Y10T137/7769—Single acting fluid servo
    • 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
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7904—Reciprocating valves

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

一种设置在管线中并用于流动物质的抽吸阀，借助于该抽吸阀可关闭、调节流量且防止回流，因此，抽吸阀包括置于阀室(1)中的可动关闭装置(3)和在阀室中用于可动关闭装置的相对面，并且所述关闭装置(3)通过将所述关闭装置(3)形成为在工作缸中的活塞部分或缸部分借助于流动物质的压力可以运动。为运动关闭装置(3)必需的流动物质的压力经放出阀(8、9、10)被引入所述关闭装置中，该放出阀装在关闭装置(3)内部。

Description

抽吸阀
技术领域
本发明涉及一种设置在管线中并用于流动物质的抽吸阀，借助于该抽吸阀可关闭、调节流动且防止流动回流，因此，抽吸阀包括置于阀室中的可动锁定装置和在阀室中用于它的相对面，并且所述锁定装置通过将所述锁定装置形成为在工作缸中的活塞部分或缸部分借助于流动物质的压力可以运动。阀特别适合于作为用于螺旋压缩机和转子压缩机的抽吸阀，该抽吸阀使流量损失非常小，而且可以调节，并在必要时将该抽吸阀关闭。当压缩机停机时，通过关闭抽吸阀防止来自压缩机的回流。
背景技术
以前人们知道其中有一种来自专利公报6,695,007的抽吸阀，其中，介质的流动使阀打开。当流量减少时，或者例如在压缩机的抽吸作用减弱时，阀中的弹簧拉动关闭装置贴靠阀座表面并将阀关闭。在这样一种弹簧复位阀中，总是产生稍大的压力损失，因为通过流动使阀关闭装置打开。即使弹簧就其反作用力而言很弱，也会产生压力损失。因此当相当大的压缩机几乎日夜工作时，由于它们的抽吸阀使已经稍微变坏的操作效率，在压缩空气的生产中变成显著消耗。另外，难以将抽吸阀通过弹簧力调节返回到靠近关闭状态的中间位置，以便达到压缩机的释压状态。因此，释压必须在关闭阀的情况下进行，同时压缩机正在工作，这种情况或者在增加回弹因数或者另外运动关闭装置贴靠关闭表面时发生。
发明内容
为了克服出现的缺点和就其流量损失而言得到一种为压缩机使用的非常小的抽吸阀，而开发了一种用于流动物质的新抽吸阀，这种抽吸阀可设置在管线中，并且其关闭装置在将关闭装置形成为工作缸中的活塞或缸部分时借助于流动物质的压力可以运动，该工作缸通过流动物质的压力操作。以上提出的本发明的特征在于，将流动物质的必需压力通过装在关闭装置内部的放出阀引入所述关闭装置中。
本发明的优点是，使阀打开不会在阀中引起任何流量损失。该阀既由于其质量借助于重力，又借助于压缩机的抽吸压力而保持打开状态，使所述压力能在由关闭装置形成的缸空间中冲击到将关闭装置拉动到打开位置的方向中。压缩机必须只一次通过放出阀将负压抽吸到所述空间中，并在此后不发生关于使阀打开的损失。装在抽吸阀的关闭装置内部的放出阀的控制利用引导到它的介质的压力进行。操纵抽吸阀的关闭和打开通过加压可得到的介质进行。因此，发生控制与压缩机运行无关。当关闭阀关于其进口开口向上安装时，关闭装置借助于其自身的质量促进抽吸阀的打开。关闭装置也可调节到在关闭与打开位置之间的任何中间位置。当将关闭装置压紧到关闭位置的介质的压力经放出阀快速排放到压缩机的抽吸管时，借助于放出阀可使关闭装置从关闭状态到打开状态的运动非常快。抽吸阀对于通过它的流动造成非常小的压力损失，因为使进入和出去侧的式样做成非常好的流线型是可能的。
附图说明
下面参照附图描述本发明，其中，
图1表示本发明的阀打开侧面的剖视图。
图2表示在关闭位置中的阀。
图3为阀的连接图。
具体实施方式
图1表示抽吸阀，其外壳由两个接合部分1a和1b形成，该接合部分1a和1b可用穿过孔6的螺栓彼此连结。借助于跨过圆形流动通道引导的翼板2而连接到另一部分1b上的关闭装置的固定圆形套筒状部分4被固定，其外表面适合于作为滑动面与部分3一起工作。部分3和4像彼此相对运动的缸和活塞那样。部分3安装有填料11，并且在关闭情况下挨靠部分1a的相对表面，同时填料11压缩成封闭状态。将部分4连接到部分1b上的翼板2稍厚，由此有可能穿过它将通道5从外部引入部分4中。
放出阀通过螺纹联接器12固定在套筒状部分4内。该放出阀具有放出孔(tap hole)7，该放出孔7直接通往压缩机的抽吸空间。此外，它在阀运动的圆柱形框架8中包括关闭凸缘10，该关闭凸缘10是柔性材料的，如聚氨酯。支撑凸缘9连接到框架8上。如果在关闭凸缘10后面、沿通道5并进一步沿13引导的压力大于在放出孔7中的压力，则关闭凸缘10关闭放出孔7。放出孔7中的压力也在内部控制缸空间中的关闭装置3和部分4。在图1中所述的状态下，没有压力经通道5被引到放出阀。例如，通道5也可接合到与压缩机抽吸侧相同的压力上，换句话说，接合到放出孔7排入的腔室上。关闭装置3保持在图1所示的状态下，并且不试图变成关闭。因此，由关闭装置引起的流量损失减至最小。
图2的情况在压缩机停机和工作时均能达到。例如，从压缩机的压力侧控制压力在放出阀的关闭凸缘10后面被引导，由此关闭凸缘10运动以关闭放出孔7。关闭凸缘10的材料屈服，因此，压力经由凸缘10的弯曲外边缘可进入缸空间中，以在关闭装置3内循环，并且压力将关闭装置3推到关闭位置。这时压缩机释压地运行，或者被停机。压力不能向后离开压缩机排出。
如果想要使抽吸阀打开，则发生得非常快，因为通道5的控制压力被引出，这是非常小量的空气。然后在缸空间中，来自关闭装置3的内部的压力立即能将关闭装置3的关闭凸缘10稍微推向左边，由此来自关闭装置3的内部的压力迅速经放出孔7排入启动压缩机的抽吸空间中，而关闭凸缘10仍保持在图1所示的位置。在关闭装置3内部，由压缩机抽吸的负压升高，而关闭装置3迅速向运动到打开位置且流动可通过阀。因此，压缩机的运行或其启动加速阀的打开。另外，阀的打开特别通过抽吸阀的位置被加速，如果根据图1和2，由此关闭装置3在重力的作用下向下运动到打开位置。
借助通过通道5仅将介质的被调节量引入关闭装置3与部分4之间形成的空间中，也有可能使关闭装置3在根据图2的快速放出阀的位置中获得调整中间位置。
图3表示阀的主示意图。阀14是抽吸阀，其包括图1和2中的部分1a和3。阀15是放出阀，其包括图1和2中的部分8、9和10。阀16是控制阀，通过该控制阀的打开将压力引到放出阀15，并且这使抽吸阀14关闭，而不管压缩机12的运行。控制压力经放出阀达到关闭装置3并将该关闭装置升起，而抽吸阀关闭。当除去阀16的压力控制时，通向压缩机的抽吸管线13中的低压或抽吸将压力从关闭装置3的内部除去，并使其下降，该情况是抽吸阀的打开位置。从压缩机12开始的压力管线具有附图标记17。在图3所示的示意图中抽吸阀的进口开口由附图标记14标出。从压缩机13的压力管线17，可将控制压力带到阀16中。也有可能从某些其它外部压力源取得控制压力。

Claims (6)

1.一种设置在管线中并用于流动物质的抽吸阀，借助于该抽吸阀流动物质能被关闭、调节且被防止回流，由此，抽吸阀包括置于阀室(1)中的可动关闭装置(3)和用于所述可动关闭装置的在阀室中的相对面，并且所述关闭装置(3)通过将所述关闭装置(3)形成为在工作缸中的活塞部分或缸部分而借助于流动物质的压力可以被运动，其特征在于，为运动关闭装置(3)所必需的流动物质的压力经放出阀(8、9、10)被引入所述关闭装置中，该放出阀装在关闭装置(3)的内部；
通过抽吸阀的被选择组装位置，利用重力来加速抽吸阀的打开。
2.根据权利要求1所述的抽吸阀，其特征在于，引到放出阀的操纵流动物质的压力适合于借助于通过压力而运动的关闭阀瓣(10)来关闭出口放出孔(7)，因此，关闭装置(3)将借助于所述流动物质运动至关闭状态。
3.根据权利要求1所述的抽吸阀，其特征在于，通道(5)的压力被引出，然后关闭凸缘(10)被稍微推向左边，从而关闭凸缘(10)打开放出阀(8、9、10)的放出孔(7)，以便所述关闭装置(3)内的压力下降导致快速打开关闭装置(3)。
4.根据权利要求1所述的抽吸阀，其特征在于，放出阀(8、9、10)的放出孔适合于通向从流动方向看到的抽吸阀的随后管线中。
5.根据权利要求1所述的抽吸阀，其特征在于，关闭装置(3)是运动缸，该运动缸适合于相对于套筒状活塞(4)运动。
6.根据权利要求1所述的抽吸阀，其特征在于，放出阀(8、9、10)装配在套筒状活塞(4)的内部。
CN2006800543162A 2006-03-06 2006-03-06 抽吸阀 Expired - Fee Related CN101427058B (zh)

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PCT/FI2006/000075 WO2007101901A1 (en) 2006-03-06 2006-03-06 Suction valve

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CN101427058B true CN101427058B (zh) 2012-11-14

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US20090090419A1 (en) 2009-04-09
US8113228B2 (en) 2012-02-14
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EP1994319A4 (en) 2015-03-25
PL1994319T3 (pl) 2016-11-30
CN101427058A (zh) 2009-05-06
EP1994319B1 (en) 2016-07-13

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