WO2016011952A1 - 调压阀 - Google Patents

调压阀 Download PDF

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Publication number
WO2016011952A1
WO2016011952A1 PCT/CN2015/084849 CN2015084849W WO2016011952A1 WO 2016011952 A1 WO2016011952 A1 WO 2016011952A1 CN 2015084849 W CN2015084849 W CN 2015084849W WO 2016011952 A1 WO2016011952 A1 WO 2016011952A1
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WO
WIPO (PCT)
Prior art keywords
pressure
valve
regulating valve
pressure regulating
actuator
Prior art date
Application number
PCT/CN2015/084849
Other languages
English (en)
French (fr)
Inventor
张露西
Original Assignee
费希尔久安输配设备(成都)有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from CN201420426126.0U external-priority patent/CN204114266U/zh
Priority claimed from CN201410372694.1A external-priority patent/CN105465439A/zh
Application filed by 费希尔久安输配设备(成都)有限公司 filed Critical 费希尔久安输配设备(成都)有限公司
Priority to EP15824208.1A priority Critical patent/EP3196520A4/en
Priority to MX2017000931A priority patent/MX2017000931A/es
Priority to US15/328,419 priority patent/US10247320B2/en
Publication of WO2016011952A1 publication Critical patent/WO2016011952A1/zh

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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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20—Excess-flow valves
    • F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
    • F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
    • F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
    • F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/02—Modifications to reduce the effects of instability, e.g. due to vibrations, friction, abnormal temperature, overloading or imbalance
    • 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
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0008—Mechanical means
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
    • G05D16/063—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane
    • G05D16/0675—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting on the obturator through a lever
    • G05D16/0683—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting on the obturator through a lever using a spring-loaded membrane

Definitions

  • the invention belongs to the field of fluid control, and in particular to a pressure regulating valve, in particular an internal pressure regulating pressure regulating valve.
  • FIG. 1 is a schematic view of a pressure regulating valve of a straight-through internal pressure-receiving structure
  • FIG. 2 is a straight-through internal pressure-removing structure shown in FIG. 1.
  • the inner pressure-receiving passage is a passage through which the passage is The downstream gas enters the lower chamber of the actuator to obtain downstream pressure.
  • Curve 1 in Fig. 7 shows the performance curve of the straight-through internal pressure-taking mode shown in Fig. 1. As can be seen from the curve 1, the performance of the pressure regulator in the flow accuracy range is poor, and the pressure drop is too fast.
  • the present invention provides an embodiment of a pressure regulating valve whose internal pressure-receiving structure is designed to improve the performance of the pressure regulator within the flow accuracy range.
  • a communication passage is formed between the cavity of the valve body and the cavity of the actuator
  • a pressure taking pipe is further disposed in the cavity of the valve body, and one end of the pressure taking pipe is connected to the communication passage, and the other end of the pressure taking pipe is suspended.
  • the communication passages are at least two, and the pressure taking pipe is connected to at least one of the communication passages.
  • the suspended end of the above-mentioned pressure taking pipe is disposed in a direction along which a gas or a liquid flows.
  • the cavity of the valve body includes an inlet pressure chamber and an outlet pressure chamber, and the pressure tube is disposed in the pressure discharge chamber.
  • the above pressure regulating valve includes
  • valve stem and a valve seat, wherein the actuator can push the valve seat to move in the pressure inlet chamber or the pressure outlet chamber through one end of the valve stem;
  • the guiding device is sleeved on the valve stem, the guiding device is disposed between the valve body and the actuator, and the communication passage can be disposed on the guiding device.
  • the communication passages are distributed on both sides of the symmetry of the valve stem axis.
  • the above guiding device can be integrally formed with the actuator.
  • the above communication passage is a cylindrical hole.
  • the embodiment provided by the present invention senses the downstream pressure of the valve body by providing a passage between the valve body cavity and the actuator cavity and the pressure pipe, thereby improving the pressure drop of the pressure regulator within the flow accuracy range. .
  • FIG. 1 is a schematic view of a pressure regulating valve of a related art straight-through internal pressure-receiving structure
  • Figure 2 is a straight-through internal pressure-taking structure of Figure 1;
  • FIG. 3 is a schematic view showing an embodiment of a pressure regulating valve with an internal pressure-receiving structure with a pressure taking pipe according to an embodiment of the present invention
  • Figure 4 is a single-hole internal pressure-taking structure with a pressure take-up tube of Figure 3;
  • FIG. 5 is a schematic view of a pressure regulating valve with a double-hole internal pressure-receiving structure with a pressure-taking tube according to an embodiment of the present invention
  • Figure 6 is a double-hole internal pressure-removing structure with a pressure take-up tube of Figure 5;
  • Figure 7 is a performance graph of the three pressure-taking modes of Figure 1, Figure 3 and Figure 5;
  • FIG. 8 is a schematic view of another pressure regulating valve with a double-hole internal pressure-receiving structure with a pressure-taking tube according to an embodiment of the present invention.
  • valve 3 is a schematic view of a pressure regulating valve with an internal pressure-receiving structure with a pressure-receiving tube, which includes a valve body 2, an actuator 3, a valve seat 4, a valve stem 5, a guiding device 11, and a pressure-receiving tube 13.
  • the valve body 2 includes a pressure inlet 21, a pressure outlet 22 and a valve chamber 23.
  • the actuator 3 is fixedly connected to the valve body 2.
  • the valve seat 4 is movably disposed in the valve chamber 23.
  • the valve stem 5 includes a first end and a second end, a first end of the valve stem is disposed in the actuator 3, and a second end of the valve stem is fixed in the valve seat 4, the valve stem 5 together with the valve seat 4 can move together in the direction of the valve stem axis.
  • the guiding device 11 is fixed to the actuator 3 or the valve body 2. When the valve stem 5 is moved, the guiding device 11 guides the valve stem 5.
  • the internal pressure-receiving structure of the pressure regulating valve includes a passage 12 connecting the actuator 3 and the valve chamber 23, and a pressure-receiving tube 13, which is disposed on the guiding device 11; One end of the tube is in communication with the valve chamber 23, and the other end of the pressure tube is in communication with the passage 12.
  • the valve chamber 23 includes a pressure inlet chamber 231 that communicates with the pressure inlet port 21, an outlet pressure chamber 232 that communicates with the pressure outlet port 22, and a valve port 233 that communicates the pressure inlet chamber 231 with the pressure chamber 232.
  • the pressure-receiving tube 13 is preferably placed in the pressure-extracting chamber 232 (because the pressure-extracting chamber is located on the side of the outlet), and the pressure-removing effect obtained at this time is better.
  • the inlet pressure may be a gas pressure or a liquid pressure
  • the outlet pressure may be a gas pressure or a liquid pressure. If the pressure tube is placed along the flow direction of the gas or liquid, the pressure obtained will be better.
  • Curve 2 in Fig. 7 shows the performance curve in the pressure-taking mode shown in Fig. 3, that is, the performance curve in the single-hole internal pressure-receiving mode with the pressure-taking tube.
  • the performance of the pressure regulating valve in the flow accuracy range is also not good, and the pressure rise is too large.
  • the inventor opens a pressure-receiving passage on the other side of the valve stem corresponding to the pressure-receiving passage corresponding to the pressure-receiving pressure tube, as shown in FIG.
  • the pressure finally makes the regulator perform better in the flow accuracy range.
  • the internal pressure-receiving structure of the pressure regulating valve is provided with two passages 12 communicating with the actuator 3 and the valve chamber 23 on the guiding device 11, wherein one of the passages 12 communicates with the pressure-receiving tube 13.
  • the two channels are distributed on both sides of the valve stem axis, wherein the symmetrical distribution is obtained The pressure effect is better.
  • the pressure regulating valve using the two-hole pressure-receiving method is shown in Fig. 5.
  • the curve 3 in Fig. 7 shows the performance curve in the pressure-taking mode shown in Fig. 5, that is, the double-hole internal pressure-taking mode with the pressure-taking tube Performance graph.
  • curve 3 greatly improves the performance of the pressure regulating valve within the flow accuracy range.
  • the position of the pressure-receiving passage is not fixed and can be adjusted as needed.
  • the size and number of the pressure-receiving channels can also be adjusted according to the performance. That is to say, the number of pressure passages can be more than two, and the pressure tube can be connected to only one of the channels.
  • the vertical distance from the valve port to the pressure passage can also be adjusted to achieve a more satisfactory performance.
  • D is the vertical distance from the valve port 233 to the pressure-receiving passage 12. The value of D can be adjusted during the design of the valve according to the required performance.
  • the guide device 11 described above can also be integrally formed with the actuator 3.
  • the valve seat 4 connected to the valve stem 5 may be a rubber mat.
  • the actuator includes an actuator including a membrane cover assembly, a diaphragm assembly, a pressure regulating device, and a lever.
  • the membrane cover assembly includes a first membrane cover 311 and a second membrane cover 312.
  • the first membrane cover 311 is connected to the pressure regulating device, and the second membrane cover 312 is connected to the valve body 2.
  • the first membrane cover 311 and the second membrane cover The 312 fits into a hollow interior.
  • the diaphragm assembly includes a diaphragm 321, a first diaphragm 322, and a second diaphragm 323.
  • the diaphragm 321 is pressed between the first diaphragm 322 and the second diaphragm 323, and the diaphragm 321 is located at Between the membrane cover 311 and the second membrane cover 312, the first membrane plate 322 is located in the cavity formed by the membrane 321 and the first membrane cover 311, and the second membrane 323 is located in the membrane 321 and the second membrane cover 312.
  • the pressure regulating device comprises a spring 331 and an adjusting rod 332.
  • the spring 331 is located inside the first film cover 311.
  • the adjusting rod 332 includes a third end and a fourth end. The third end of the adjusting rod contacts the spring 331 through the first film cover 311.
  • the fourth end of the adjusting rod is suspended, and the adjusting rod is fixed on the first film cover 311.
  • the lever 34 shown in Figure 3 includes three connecting ends: a fifth end, a sixth end, and a seventh end, wherein the fifth end of the lever is movably coupled to the diaphragm assembly, the sixth end of the lever and the first end of the valve stem 5 End movable connection, the seventh end of the lever and the second membrane cover 312 active connections.
  • lever in FIG. 3 may also be other linkage components or a structure without a lever.
  • the working principle of the pressure regulating valve shown in Fig. 3 is that gas or liquid enters the valve from the pressure inlet port along the pressure inlet chamber, and the user adjusts the spring force by the adjusting rod to set the required outlet pressure as needed.
  • the diaphragm moves to the left and right, thereby driving the lever to rotate, thereby driving the valve stem to move vertically, changing the size of the valve seat opening, thereby changing the downstream pressure until The magnitude of the outlet pressure reaches a stable value.
  • the guide 11 is fixed as a separate component to the second membrane cover 312 and the valve body 2.
  • the guiding device 11 can also be formed integrally with the second film cover 312 instead of a separate component, as shown in FIG. 8, which is another adjustment of the double-hole internal pressure-receiving structure with a pressure-taking tube. Pressure valve schematic.
  • FIG. 8 is a schematic view of another pressure regulating valve with a double-hole internal pressure-receiving structure with a pressure-taking tube.
  • the regulating valve has no lever and still adopts a double-hole internal pressure-receiving method with a pressure-taking tube.
  • the same components as those in FIG. 3 in FIG. 8 are denoted by the same reference numerals and will not be described in detail.
  • FIG. 3, FIG. 5, and FIG. 8 show cylindrical holes; of course, the shape of the pressure-receiving passage may be a rectangular hole or the like.
  • the most important factor affecting the performance curve is whether the pressure pipe on the pressure side is arranged along the flow direction of the gas or liquid, and the position setting of the pressure channel has little effect on the performance curve.
  • first, second, third, etc. may be used to describe various elements, components or portions, these elements, components or portions are not limited by these terms; these terms may be used only to distinguish one element, Part or part.
  • a term such as “first,” “second,” and other numerical terms are used herein, they do not include the order or order unless the context clearly indicates.
  • a first element, component, or portion may be described below as a first element, component, or portion, without departing from the description of the exemplary embodiments.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Fluid Pressure (AREA)

Abstract

一种调压阀，包括：执行器（3），阀体（2），所述阀体的腔体与所述执行器的腔体之间设有连通通道（12），在所述阀体的腔体内还设有取压管（13），所述取压管一端连接所述连通通道，所述取压管另一端悬空。调压阀内取压结构使调压阀在流量精度范围内的性能得到改善。

Description

调压阀 技术领域
本发明属于流体控制领域，具体而言，涉及一种调压阀，尤其是内取压式调压阀。
背景技术
在内取压式的调压器设计中，因为需要在调压器内部直接取得下游压力，所以通常会在调压器内部设计一条连通阀体与执行器下游的取压通道。图1为直通式内取压结构的调压阀示意图，图2是图1所示的直通式内取压结构，在图1和图2中，内取压通道为一条通道，通过这条通道，使下游的气体进入到执行器下腔，从而得到下游的压力。图7中曲线1表示的是图1所示直通式内取压方式下的性能曲线图，从曲线1可以看出，调压器在流量精度范围内的性能很差，压降太快。
发明内容
为解决上述问题，本发明提供了一种调压阀的实施例，该调压阀的内取压结构设计使得调压器在流量精度范围内的性能得到改善。
本发明实施例提供的调压阀，包括：
执行器，阀体，
所述阀体的腔体与所述执行器的腔体之间设有连通通道，
在所述阀体的腔体内还设有取压管，所述取压管一端连接所述连通通道，所述取压管另一端悬空。
上述连通通道至少为两条，所述取压管与所述连通通道中的至少一条相连接。
上述取压管的悬空端设置在沿着气体或者液体流向的方向。
上述阀体的腔体包括进压腔和出压腔，所述取压管设置于所述出压腔内。
上述调压阀包括
阀杆和阀座，所述执行器可通过所述阀杆的一端推动所述阀座在所述进压腔或所述出压腔运动；
导向装置，套接在所述阀杆上，所述导向装置设于所述阀体与所述执行器之间，所述连通通道可设置在所述导向装置上。
上述连通通道分布在所述阀杆轴线的对称两侧。
上述导向装置可与所述执行器一体成型。
上述连通通道为圆柱孔。
本发明提供的实施例通过设置连通阀体腔体与执行器腔体之间的通道和取压管，来感知阀体的下游压力，从而改善调压器在流量精度范围内压降太快的性能。
附图说明
图1是相关技术直通式内取压结构的调压阀示意图；
图2是图1的直通式内取压结构；
图3是本发明实施例提供的一种带取压管的内取压结构的调压阀实施例示意图；
图4是图3中带取压管的单孔内取压结构；
图5是本发明实施例提供的一种带取压管的双孔内取压结构的调压阀示意图；
图6是图5中带取压管的双孔内取压结构；
图7是图1、图3和图5三种取压方式下的性能曲线图；
图8是本发明实施例提供的带取压管的双孔内取压结构的另一种调压阀示意图。
图号说明：11-导向装置，12-通道，13-取压管，2-阀体，21-进压口，22-出压口，23-阀腔，231-进压腔，232-出压腔，233-阀口，3-执行器，311-第一膜盖，312-第二膜盖，321-膜片，322-第一膜板，323-第二膜板，331-弹簧，332-调节杆，34-杠杆，4-阀座，5-阀杆。
具体实施方式
以下结合附图以及具体实施例对本发明的技术方案做进一步说明。
图3所示为带取压管的内取压结构的调压阀示意图，该调压阀包括阀体2、执行器3、阀座4、阀杆5、导向装置11和取压管13。其中阀体2包括进压口21、出压口22和阀腔23。执行器3与阀体2固定连接。阀座4活动地设置于阀腔23中。阀杆5包括第一端和第二端，所述阀杆的第一端置于所述执行器3内，所述阀杆的第二端固定在所述阀座4内，所述阀杆5连同所述阀座4能够共同沿着所述阀杆轴线方向运动。导向装置11固定在执行器3或者阀体2上，当阀杆5运动时，导向装置11对阀杆5进行导向。
如图3和4所示，该调压阀的内取压结构包括连通执行器3与阀腔23的通道12以及取压管13，所述通道12设置在导向装置11上；所述取压管的一端与阀腔23连通，所述取压管的另一端与所述通道12连通。
阀腔23包括与进压口21连通的进压腔231、与出压口22连通的出压腔232、以及连通进压腔231与出压腔232的阀口233。
由于是调节阀出口压力的大小，所以取压管13最好置于出压腔232内(因为出压腔位于出压口侧)，这时获得的取压效果较好。
本披露提供的调压阀，进口压力可以是气体压力，也可以是液体压力，相应地，出口压力可以是气体压力，也可以是液体压力。如果取压管沿着气体或者液体的流向设置，那么获得的取压效果会更好。
图7中曲线2表示的是图3所示取压方式下的性能曲线，即带取压管的单孔内取压方式下的性能曲线图。从图7中可以看出，调压阀在流量精度范围内的性能也不好，压升太大。
进一步地，发明人在图4的基础上，在取压取压管对应的取压通道相对于阀杆的另一侧再开一条取压通道，如图6所示，使得两条通道同时取压，最终使调压器在流量精度范围内的性能较好。
具体地，该调压阀的内取压结构是在导向装置11上设置连通执行器3与阀腔23的两条通道12，其中一条通道12与取压管13连通。优选地，两条通道分布在阀杆轴线的两侧，其中对称分布时获得的取 压效果较好。
应用双孔取压方式的调压阀如图5所示，图7中曲线3表示的是图5所示取压方式下的性能曲线，即带取压管的双孔内取压方式下的性能曲线图。从图7中可以看出，相比曲线1和曲线2，曲线3使调压阀在流量精度范围内的性能有很大改善。
需要说明的是，在设计过程中，取压通道的位置并不是固定的，可以根据需要来调整。同时，取压通道的大小和数量也可以根据性能的不同来调整。也就是说，取压通道的数量可以多于两个，这时取压管可以只与其中一个通道连通。
在设计过程中，从阀口到取压通道的垂直距离也可以做调整，从而获得一个更加符合要求的性能。以图6为例，D为阀口233到取压通道12的垂直距离，D的值可以根据所需的性能在阀的设计过程中进行调整。
上述导向装置11也可以与执行器3一体成型。
与阀杆5连接的阀座4可以为一橡胶垫。
以上是本披露的内取压结构应用在图3所示调节阀的详细说明，以下针对该调节阀的其它部件进行说明。如图3所示，执行器包括执行器包括膜盖组件、膜片组件、调压装置和杠杆。其中，膜盖组件包括第一膜盖311和第二膜盖312，第一膜盖311与调压装置连接，第二膜盖312与阀体2连接，第一膜盖311与第二膜盖312配合形成中空的内部。膜片组件包括膜片321、第一膜板322和第二膜板323，膜片321被压在所述第一膜板322和所述第二膜板323之间，且膜片321位于第一膜盖311与第二膜盖312之间，第一膜板322位于膜片321与第一膜盖311形成的空腔内，第二膜板323位于膜片321与第二膜盖312形成的空腔内。调压装置包括弹簧331和调节杆332，弹簧331位于第一膜盖311内部，调节杆332包括第三端和第四端，调节杆的第三端穿过第一膜盖311与弹簧331接触，调节杆的第四端悬空，且调节杆固定在第一膜盖311上。图3所示杠杆34包括三个连接端：第五端、第六端、和第七端，其中杠杆的第五端与膜片组件活动连接，杠杆的第六端与阀杆5的第一端活动连接，杠杆的第七端与第二膜盖 312活动连接。
需要说明的是，图3中的杠杆也可以是其它连动部件，或者是没有杠杆的结构。
图3所示调压阀的工作原理是：气体或者液体从进压口沿着进压腔进入阀中，根据需要，用户通过调节杆调节弹簧力的大小来设定所需的出口压力大小。在弹簧力和阀体下游压力(阀体下游压力在变化)的作用下，膜片左右移动，从而带动杠杆转动，进而带动阀杆竖直运动，改变阀座开口大小，从而改变下游压力，直到出口压力的大小达到稳定值。
在图3中，导向装置11作为一独立的部件固定在第二膜盖312与阀体2上。当然，导向装置11也可以做成与第二膜盖312一体成型，而非一独立的部件，如图8所示，图8是带取压管的双孔内取压结构的另一种调压阀示意图。
需要说明的是，本披露的内取压结构还可应用在任何结构的调压阀中，而不拘泥于图3所示结构的调节阀。例如，图8是带取压管的双孔内取压结构的另一种调压阀示意图，该调节阀没有杠杆，仍然采用带取压管的双孔内取压方式。图8中与图3相同的部件，在此采用同一标号，不再详细赘述。
关于取压通道的形状，图3、图5和图8示出的是圆柱孔；当然，取压通道的形状还可以是矩形孔或者其它。图3所示的取压通道只有一条，且上下直径相同；图5所示的取压通道有两条，其中连接取压管的取压通道上下直径相同，进压侧的通道上部直径大于下部直径；图8所示的取压通道有两条，其中每条通道的上下直径相同，但是进压侧的通道直径小于出压侧的通道直径。需要说明的是，取压通道的上下直径相同与上下直径不同对调压阀在流量精度范围内的性能影响不大；通道的直径越大，会使性能曲线向下弯曲；取压管的长度越长，性能曲线越向下弯曲。
正如以上所述，影响性能曲线最重要的因素是在出压侧取压管是否沿着气体或者液体的流向设置，而取压通道的位置设置对性能曲线的影响不大。
提供示例性实施例以使本公开更加完整，并向本领域技术人员全面传达其保护范围。阐述许多细节，比如特定部件、装置和方法的例子，以提供对本公开的全面的实施例的理解。对本领域技术人员来说很明显的，不必提供细节，示例性实施例可以许多不同形式实施，且不应该解释为限制本公开的范围。在某些示例性实施例中，众所周知的过程、众所周知的装置结构和众所周知的技术不作详细说明。
尽管在此可以使用术语第一、第二、第三等等以描述各种元件、部件或部分，但这些元件、部件或部分不应被这些术语限制；这些术语可仅用于区别一个元件、部件或部分。当在此使用术语如“第一”、“第二”及其他数值术语时，其并不包含顺序或次序，除非上下文中明确指出。因此，在不脱离示例性实施例的说明的情况下，以下所述第一元件、部件、部分可以解释为术语第一元件、部件、部分。
尽管在此已详细描述本发明的各种实施方式，但是应该理解本发明并不局限于这里详细描述和示出的具体实施方式，在不偏离本发明的实质和范围的情况下可由本领域的技术人员实现其它的变型和变体。所有这些变型和变体都落入本发明的范围内。而且，所有在此描述的构件都可以由其他技术性上等同的构件来代替。

Claims (8)

  1. 一种调压阀，包括：
    执行器，阀体，
    所述阀体的腔体与所述执行器的腔体之间设有连通通道，
    其特征在于，在所述阀体的腔体内还设有取压管，所述取压管一端连接所述连通通道，所述取压管另一端悬空。
  2. 根据权利要求1所述的调压阀，其特征在于，所述连通通道至少为两条，所述取压管与所述连通通道中的至少一条相连接。
  3. 根据权利要求1或2所述的调压阀，其特征在于，所述取压管的悬空端设置在沿着气体或者液体流向的方向。
  4. 根据权利要求3所述的调压阀，其特征在于，所述阀体的腔体包括进压腔和出压腔，所述取压管设置于所述出压腔内。
  5. 根据权利要求4所述的调压阀，其特征在于，所述调压阀包括
    阀杆和阀座，所述执行器可通过所述阀杆的一端推动所述阀座在所述进压腔或所述出压腔运动；
    导向装置，套接在所述阀杆上，所述导向装置设于所述阀体与所述执行器之间，所述连通通道可设置在所述导向装置上。
  6. 根据权利要求5所述的调压阀，其特征在于，所述连通通道分布在所述阀杆轴线的对称两侧。
  7. 根据权利要求5所述的调压阀，其特征在于，所述导向装置可与所述执行器一体成型。
  8. 根据权利要求1所述的调压阀，其特征在于，所述连通通道为圆柱孔。
PCT/CN2015/084849 2014-07-22 2015-07-22 调压阀 WO2016011952A1 (zh)

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