WO2014071794A1

WO2014071794A1 - Fluid on-off method and fluid on-off device

Info

Publication number: WO2014071794A1
Application number: PCT/CN2013/085286
Authority: WO
Inventors: 叶晓丰
Original assignee: 丽水市力控科技有限公司
Priority date: 2012-11-12
Filing date: 2013-10-16
Publication date: 2014-05-15
Also published as: CN103161979A; CN103161979B; CN102966767A

Abstract

Disclosed is a fluid on-off device, comprising a high liquid level interface (1), a low liquid level interface (2), and at least one chamber (3) provided between the high liquid level interface (1) and the low liquid level interface (2), wherein the chambers (3) are successively in communication with one another , the chambers (3) are filled with intercepted liquid; furthermore the chamber (3) comprises an air sealing segment (4), the liquid within the chamber (3) is separated into a front fluid segment (5) and a rear fluid segment (6) by the air sealing segment (4), the height of the front fluid segment (5) is higher than that of the rear fluid segment (6), and the top of the chamber (3) is provided with an air charge/discharge port. The present fluid on-off device is not provided with an intercepting component, overcoming the disadvantage of an intercepting component being easily damaged in the prior art, and having the advantages of high safety, good reliability, automatic conducting and pressure relieving, etc. Further disclosed is a fluid on-off method.

Description

一种流体通断方法及流体通断装置技术领域 Fluid switching method and fluid switching device

本发明涉及流体控制领域，尤其涉及一种流体通断方法及流体通断装置。背景技术 The present invention relates to the field of fluid control, and more particularly to a fluid switching method and a fluid switching device. Background technique

在生产生活中，常会有需要对流体进行断流及使其流通。在无外力影响下流体的流动特点是从高液位端流向低液位端，现有控制流体通断的方法基本是采用截流件来断流和开流，即断流时利用截流件截断高液位端与低液位端之间的通路，开流时释放节流件，打开高液位端与低液位端之间的通路。常见的阀门就是利用这一原理实现流体截流、开流，阀门中的截流件也就是阀芯。然而截流件在整个截流装置中是最重要的部件也是最易损坏的部件，因为它不像阀座本身那样是一个整体，强度较大，但在断流后却要承受高液位端与低液位端之间的压差；而在开流时尤其是部分开流时，流体会一直冲击截流件，也会使截流件一直处于损耗状态。而且，每一次的开流、断流，都需要截流件发生位置、角度变化，例如阀芯会与阀座之间发生相对移动或转动，产生摩擦，这也是截流件损耗的重要因素之一，而一旦截流件发生损坏，整个截流装置也会立即失效。再者，利用截流件来实现断流、开流时，若高液位端的液位持续增高或是液压持续增大，此时截流件上承受的压力会超出安全承压范围，会导致截流件损坏甚至引发安全事故。 In production and life, there is often a need to shut off fluids and circulate them. The flow characteristics of the fluid under the influence of no external force are from the high liquid end to the low liquid end. The existing method of controlling the fluid to be cut off is basically to use the intercepting device to cut off and open the flow, that is, the cutoff is high when the flow is interrupted. The passage between the liquid level end and the low liquid end end releases the throttle member when the flow is opened, and opens the passage between the high liquid end and the low liquid end. The common valve is to use this principle to achieve fluid interception and opening, and the shut-off part in the valve is the valve core. However, the intercepting member is the most important component and the most vulnerable component in the entire intercepting device, because it is not as integral as the valve seat itself, and has high strength, but it has to withstand high liquid end and low after breaking. The pressure difference between the liquid level ends; while in the open flow, especially in the partial open flow, the fluid will always impact the intercepting member, and the intercepting member will always be in a loss state. Moreover, each time the flow or the flow breaks, the position and angle of the shut-off piece need to be changed. For example, the relative movement or rotation between the valve core and the valve seat generates friction, which is also one of the important factors for the loss of the shut-off piece. Once the interceptor is damaged, the entire shut-off device will immediately fail. Furthermore, when the flow stop is used to realize the flow interruption and the open flow, if the liquid level at the high liquid level continues to increase or the hydraulic pressure continues to increase, the pressure on the shutoff member will exceed the safe pressure range, which will result in the intercepting device. Damage or even a safety incident.

参见中国专利文献上公开的 "流体截流器"，其公告号为 See the "Fluid Shunt" disclosed in the Chinese patent literature, the bulletin number is

CN1421632A, 该流体截流器，包含有一本体，具有一容室，一入口、一出口及一管制口，分别设于该本体内并与该容室相通，该入口及该出口是供流体流入及流出；一控制机构，用以控制该入口及该出口是否相通，该控制机构具有一截流件及一挡环，该挡环是设于该主体容室一预定位置中，用以承置该截流件，而由该挡环的作用使该流体截流器可搭配多种不同种类的截流件。但是该种截流装置及其使用方法来截流时仍然完全依赖截流件实现断流、开流，在开流时尤其是不完全开流时截流件持续受到流体冲击、在截流后截流件两端承受压差，容易损坏导致整个截流装置失效，且当截流件两端压差超过承受范围时不能自动疏导减压，导致截流件易失效。发明的公开 CN1421632A, the fluid interceptor comprises a body having a chamber, an inlet, an outlet and a control port respectively disposed in the body and communicating with the chamber, the inlet and the outlet are for flowing in and out of the fluid a control mechanism for controlling whether the inlet and the outlet are in communication, the control mechanism has a intercepting member and a retaining ring, and the retaining ring is disposed in a predetermined position of the main body chamber for receiving the intercepting member By the action of the retaining ring, the fluid interceptor can be matched with a plurality of different types of intercepting members. However, the shut-off device and the method of using the same are still completely dependent on the shut-off member for shut-off and open flow, especially in the open flow. When the flow is opened, the intercepting member is continuously subjected to fluid impact, and the pressure difference is applied to both ends of the intercepting member after the intercepting, which is easy to damage and causes the entire shut-off device to fail. When the pressure difference between the two ends of the intercepting member exceeds the receiving range, the decompression can not be automatically decompressed, resulting in the intercepting member. Easy to fail. Disclosure of invention

本发明的目的是为了解决现有技术的流体通断方法及流体通断装置均利用截流件开流和断流，而截流件在断流后两端会有压差、在开流时会受到流体的持续冲击，因此容易损坏的不足，提供了一种利用装置整体进行截流，而非单一处承受主要压力，因此安全性和稳定性更好的流体通断方法及流体通断装置。 The object of the present invention is to solve the prior art fluid on-off method and the fluid-interrupting device both utilizing the opening and breaking of the intercepting member, and the intercepting member has a pressure difference at both ends after the interruption, and is subjected to the open flow when the flow is interrupted. The continuous impact of the fluid, and thus the susceptibility to damage, provides a fluid switching method and fluid switching device that utilizes the entire device to intercept, rather than being subjected to a primary pressure, thereby providing better safety and stability.

本发明的另一个目的是为了解决现有技术的流体通断方法及流体通断装置每一次开流、断流的转换过程中截流件需要发生位置、角度的变化，对截流件造成损耗，因此截流件有使用次数的限制，一旦使用次数过多，就容易造成截流件磨损过剧而失效，不再具有控制流体通断的能力的不足，提供了一种不需要采用会被磨损的截流件就能实现控制流体通断的流体通断方法及流体通断装置。 Another object of the present invention is to solve the prior art fluid on-off method and the fluid flow-off device in the process of switching between the current flow and the flow interruption, and the position and angle of the shut-off member need to be changed, thereby causing loss to the shut-off member. The intercepting device has a limitation on the number of uses. Once the number of uses is too large, it is easy to cause the intercepting member to wear out and fail, and no longer has the ability to control the fluid to be turned on and off, thereby providing a shut-off member that does not need to be worn. A fluid switching method for controlling fluid continuity and a fluid switching device can be realized.

本发明的另一个目的是为了解决现有技术的流体通断方法及流体通断装置当截流后高压端和低压端压差超过安全范围后，不能实现自动疏导减压的不足，提供了一种能自动疏导减压来保证安全性的流体通断方法及流体通断装置。 Another object of the present invention is to solve the problem that the prior art fluid on-off method and the fluid-interrupting device fail to achieve automatic decompression and decompression after the pressure difference between the high-pressure end and the low-pressure end exceeds the safe range after the interception, thereby providing a A fluid switching method and a fluid switching device capable of automatically guiding decompression to ensure safety.

本发明是通过以下技术方案实现的： The invention is achieved by the following technical solutions:

一种流体通断方法，适用于存在高低液位差的流体通断的场合，其包括下列步骤： A fluid switching method is suitable for the case where a fluid having a high or low liquid level difference is turned on and off, and the following steps are included:

a. 将一管子制成依次上下起伏的形状，并使其两端分别接至高液位端和低液位端。 a. Make a tube into the shape of up and down, and connect the two ends to the high liquid end and the low liquid end respectively.

b. 使流体流入流体通断装置中，推动管子起伏段下端的空气，并将起伏段上端的空气封一部分在起伏的波峰中形成气封段，从而形成每一段起伏段下端为流体、上端为空气的流体通断装伏段上端仅留下少部分空气或无空气，处于通路状态；在断流时利用给气设备对最靠近高液位端的充排气口充气，使空气首先灌满第一个起伏，然后依次挤开每一个起伏段下端的流体进入下一个起伏段上端，使所有起伏段上端部分形成气封段。现有技术的流体通断方式虽然不尽相同，但基本的原理都是通过截流件位置、角度的变化来隔断高液位端或高压端与低液位端或低压端之间的通路，来实现断流；打开高液位端或高压端与低液位端或低压端之间的通路，来实现开流。 b. causing the fluid to flow into the fluid switching device, pushing the air at the lower end of the undulating section of the pipe, and forming a portion of the air seal at the upper end of the undulating section to form a gas-sealed section in the undulating peak, thereby forming a fluid at the lower end of each undulating section, and the upper end is Air fluid on and off The upper end of the voltmeter leaves only a small part of air or no air, and is in the state of the passage; when the flow is interrupted, the air supply device is used to inflate the air inlet and outlet closest to the high liquid end, so that the air first fills the first undulation, and then sequentially The fluid at the lower end of each undulating section is squeezed into the upper end of the next undulating section, so that the upper end portions of all the undulating sections form a gas-sealed section. Although the prior art fluid switching methods are not identical, the basic principle is to block the passage between the high liquid end or the high pressure end and the low liquid end or the low pressure end by changing the position and angle of the intercepting member. To achieve the flow interruption; open the passage between the high liquid end or the high pressure end and the low liquid end or the low pressure end to realize the open flow.

而在本发明中，是通过装置内每一个流体段提供顶住高液位端流体的支持力，气封段作为力传递介质及流体段形态控制介质，达到使多个腔室的支持力形成合力，平衡住高液位端流体的重力，达到使高液位端流体不再会继续往低液位端流动，即达到断流的效果；而需开流时只需排放掉气封段中的一部分气体，使本发明的连通腔室之中形一条成通路；若需再次断流，就对腔室内再次利用空压机等装置充气形成气封段即可。上述过程完全避免了采用截流件来实现通断，因此不存在截流件在断流后两端存在压差而容易损坏的问题，也不存在每次开流、断流转换时需要变化截流件的位置、角度，因此截流件容易磨损的问题。 In the present invention, the support force for holding the fluid at the high liquid end is provided by each fluid section in the device, and the gas seal section is used as the force transmission medium and the fluid section shape control medium to achieve the support force of the plurality of chambers. Together, the gravity of the fluid at the high liquid end is balanced, so that the fluid at the high liquid end will no longer continue to flow to the low liquid end, that is, the effect of the flow interruption is achieved; and only the gas seal section is required to be drained. A part of the gas forms a passage in the communication chamber of the present invention; if it is required to be interrupted again, the gas chamber can be inflated by using an air compressor or the like to form a gas seal section. The above process completely avoids the use of the intercepting member to achieve the on-off, so there is no problem that the intercepting member has a pressure difference at both ends after the interruption, which is easy to be damaged, and there is no need to change the intercepting member every time the opening or the breaking current is changed. The position, angle, and therefore the interception is prone to wear.

也可以采用同时对充排气口充气的方式使流体断流，即在断流时利用给气设备对充排气口充气，使空气灌入每一个起伏，使所有起伏段上端部分形成气封段。这种断流方法的原理与前述方法一致。具体方法为： It is also possible to use a method of simultaneously inflating the charging and exhausting ports to interrupt the fluid, that is, to inflate the charging and exhausting ports by the air supply device during the interruption, so that the air is poured into each of the undulations, so that the upper end portions of all the undulating sections form a gas seal. segment. The principle of this method of current interruption is consistent with the aforementioned method. The specific method is:

b. 使流体流入流体通断装置中，推动管子起伏段下端的空气，并将起伏段上端的空气封一部分在起伏的波峰中形成气封段，从而形成每一段起伏段下端为流体、上端为空气的流体通断装置。 b. causing the fluid to flow into the fluid switching device, pushing the air at the lower end of the undulating section of the pipe, and forming a portion of the air seal at the upper end of the undulating section to form a gas-sealed section in the undulating peak, thereby forming a fluid at the lower end of each undulating section, and the upper end is Air fluid switching device.

c 在起伏段顶部开设充排气口，在开流时打开充排气口排气，使气封段所占空间减少至不能封住流体并关闭充排气口，此时起伏段上端仅留下少部分空气或无空气，处于通路状态；在断流时利用给气设备对充排气口充气，使空气灌入每一个起伏，使所有起伏段上端部分形成气封段。 c Open the charging and exhausting port at the top of the undulating section, open the exhaust and exhaust vents during the opening, so that the space occupied by the gas-sealed section is reduced to the extent that the fluid cannot be sealed and the charging and exhausting ports are closed. At this time, only the upper end of the undulating section is left. Less air or no air, in the path state; At the same time, the air supply and exhaust device is used to inflate the air inlet and outlet, so that air is poured into each of the undulations, so that the upper end portions of all the undulating sections form a gas seal section.

另外，由于本发明是通过气封段来控制流体的稳定的，而气封段是可以在一定范围内变化高度且仍能实现气封效果的，因此具有调节余量，因此当压差增大时能自动调节，且即使压差超过了余量调节范围，由于本发明的腔室内实际是一个气体、流体通路，因此高液位端的一部分流体会流向低液位端，自动疏导减压，不存在采用截流件时若压差超过安全范围会引起安全事故的隐患。 In addition, since the present invention controls the stability of the fluid by the gas seal section, and the gas seal section can change the height within a certain range and still achieve the gas seal effect, there is an adjustment margin, so when the pressure difference is increased The time can be automatically adjusted, and even if the pressure difference exceeds the margin adjustment range, since the chamber in the present invention is actually a gas and fluid passage, a part of the fluid at the high liquid end will flow to the low liquid end, and the pressure will be automatically decompressed, There is a hidden danger that a safety accident may occur if the pressure difference exceeds the safe range when the shutoff is used.

作为优选，在步骤 a中，将管子定型成每一个上下起伏的波峰相贴或间隔、波谷相贴或间隔的形状，将一组相邻的波峰及波谷作为一个腔室。如此可形成一个结构紧凑的流体通断装置，波峰、波谷相贴，因此高度一致，所以每一个腔室形状可以相同，这样在形成气封段后，每一个腔室中的气封段也会相同，可避免每一个气封段、腔室内的流体因高度不同而造成的状态不稳定，从而保证本发明工作时的稳定性。 Preferably, in step a, the tube is shaped such that each of the upper and lower undulating peaks are spaced or spaced, troughs are attached or spaced, and a set of adjacent crests and troughs are used as a chamber. This can form a compact fluid switching device, the peaks and troughs are attached, so the height is consistent, so each chamber can be the same shape, so that after forming the gas seal section, the gas seal section in each chamber will also In the same way, the state of the fluid in each gas seal section and the chamber due to the difference in height can be avoided, thereby ensuring the stability of the working of the present invention.

作为优选，在步骤 c中，设置一个充气气源装置，同时将充气气源装置作为排气接收装置，充气时将高液位端的水位引入充气气源装置，压迫充气气源装置内的空气流出并进入最靠近高液位端的腔室，然后依次充满后续腔室并最终实现断流；在排气时，将充气气源装置内的流体与低液位端接通，如此其内的流体流向低液位端，腔室内气封段空气进入排气接收装置，直至气封效果消失，实现通路开流。充气气源装置作为排气接收装置，几乎没有气量的损失，同时可免去空压机等额外充气装置，因此额外能量的损耗也很小。高液位端与充气气源装置接通时，由于高液位端压力大，所以流体会进入充气气源装置，压迫充气气源装置内的空气流出并进入最靠近高液位端的腔室，由于气体的特性，虽然腔室内下端的流体依然存在，但是当空气充满第一个腔室后，会挤开处于第一个腔室下端的流体并进入第二个腔室上端，以此类推，最终达到后续腔室上端均形成气封段，达到断流的效果，此时就可切断充气气源装置与高液位端之间的连通；当需要开流时，将低液位端与充气气源装置连通，这样充气气源装置内的流体会流入低液位端，低液位端开始接受到流体，达到初步开流，继而由于充气气源装置内的气压降低，因此腔室内的空气会进入充气气源装置，气封段内空气减少直至气封效果消失，高液位端的流体也开始流往低液位端，如此流体就会源源不断的流向低液位端，实现完全开流。 Preferably, in step c, an inflating gas source device is provided, and the inflating gas source device is used as an exhaust gas receiving device. When inflating, the water level at the high liquid level end is introduced into the inflating gas source device, and the air in the inflating gas source device is forced to flow out. And enter the chamber closest to the high liquid end, and then fill the subsequent chamber in turn and finally realize the flow interruption; when exhausting, the fluid in the gas supply device is connected to the low liquid end, so that the fluid flow therein At the low liquid end, the air in the air-sealed section of the chamber enters the exhaust gas receiving device until the gas seal effect disappears, and the passage opening is realized. As an exhaust gas receiving device, the gas-filled gas source device has almost no loss of gas volume, and at the same time, an additional inflator such as an air compressor can be eliminated, so that the loss of extra energy is also small. When the high liquid level end is connected to the inflation air source device, the fluid enters the inflation air source device due to the high pressure at the high liquid level end, and the air in the inflation air source device is forced to flow out and enter the chamber closest to the high liquid level end. Due to the nature of the gas, although the fluid at the lower end of the chamber still exists, when the air fills the first chamber, the fluid at the lower end of the first chamber is squeezed out and enters the upper end of the second chamber, and so on. Finally, the gas seal section is formed at the upper end of the subsequent chamber to achieve the effect of shutting off, and the communication between the gas source device and the high liquid end can be cut off at this time; when the flow is required, the low liquid end is inflated. The gas source device is connected, so that the fluid in the gas supply device flows into the low liquid end, and the low liquid end starts to receive the fluid to reach the initial opening, and then The air pressure in the gas supply device is lowered, so the air in the chamber enters the gas supply device, and the air in the gas seal section is reduced until the gas seal effect disappears, and the fluid at the high liquid level also starts to flow to the low liquid end, so that the fluid It will continuously flow to the low liquid level to achieve complete open flow.

一种流体通断装置，包括高液位接口、低液位接口，所述的高液位接口与低液位接口之间设有至少一个腔室，所述的腔室依次连通，所述的腔室内填充有被截流的流体，所述的腔室还包括一气封段，所述的气封段将腔室内的流体分隔为前流体段、后流体段，所述的一个腔室内的前流体段高度大于该腔室内的后流体段高度，所述的腔室顶部设有充排气口。后一个腔室的前流体段与前一个腔室的后流体段是连通的且存在液位差，所以会对前一个腔室的气封段提供压力，所有腔室以此类推，所有流体段液位差提供的压力之和等于高液位端与低液位段的压力差，就能实现断流；当需要开流时，打开充排气口排出每一个气封段的一部分空气，使气封效果消失即可；当需要再次断流时，通过充排气口利用空压机或其他装置对所有腔室内充气至出现气封效果即可。在此过程中，完全不需要截流件，因此不存在截流件在断流后两端存在压差因此容易损坏的问题，也不存在每次开流、断流转换时需要变化截流件的位置、角度，因此截流件容易磨损的问题。而气封段是可以在一定范围内变化高度且仍能实现气封效果的，因此具有调节余量，因此当压差增大时能自动调节，且即使压差超过了余量调节范围，腔室内实际是一个气体、流体通路，因此高液位端的一部分流体会流向低液位端，自动疏导减压，不存在采用截流件时若压差超过安全范围会引起安全事故的问题。 A fluid switching device includes a high liquid level interface and a low liquid level interface, wherein at least one chamber is disposed between the high liquid level interface and the low liquid level interface, and the chambers are sequentially connected, The chamber is filled with a fluid to be intercepted, and the chamber further includes a gas seal section, the gas seal section separating the fluid in the chamber into a front fluid section and a rear fluid section, and the front fluid in the chamber The height of the segment is greater than the height of the rear fluid section in the chamber, and the top of the chamber is provided with a charging and exhausting port. The front fluid section of the latter chamber is in communication with the rear fluid section of the previous chamber and there is a liquid level difference, so pressure is applied to the gas seal section of the previous chamber, and all chambers are deduced, all fluid sections The sum of the pressures provided by the liquid level difference is equal to the pressure difference between the high liquid level end and the low liquid level section, so that the flow can be interrupted; when the open flow is required, the filling and exhausting ports are opened to discharge a part of the air of each gas sealing section, so that The gas seal effect disappears; when it is necessary to cut off the flow again, all the chambers are inflated to the air seal effect by the air compressor or other device through the air inlet and outlet. In this process, there is no need for a shut-off member at all, so there is no problem that the shut-off member has a pressure difference at both ends after the flow-breaking, so that it is easily damaged, and there is no need to change the position of the shut-off member every time the open flow or the cut-off transition occurs, Angle, so the interceptor is prone to wear. The gas seal section can change the height within a certain range and still achieve the gas seal effect, so it has the adjustment margin, so the pressure difference can be automatically adjusted when the pressure difference is increased, and even if the pressure difference exceeds the margin adjustment range, the cavity The indoor is actually a gas and fluid passage. Therefore, a part of the fluid at the high liquid end will flow to the low liquid end, and the pressure will be automatically decompressed. There is no problem that the safety difference may occur if the pressure difference exceeds the safe range when the shutoff is used.

作为优选，所述的充排气口通过气管与一气罐相连通，所述的气罐下端分别设有与高液位端、低液位端接通的高液位接管、低液位接管，所述的高液位接管与低液位接管上设有截止阀，除去最靠近高液位端的气管，其余气管内设有单向排气阀，所述的单向排气阀的可流通方向为腔室至气罐。充气时打开高液位接管上的截止阀，将高液位端的水位引入充气气源装置，压迫气罐内的空气流出并进入最靠近高液位端的腔室，由于气体的特性，虽然腔室内下端的流体依然存在，但是当空气充满第一个腔室后，会挤开处于第一个腔室下端的流体并进入第二个腔室上端，以此类推，最终达到后续腔室上端均形成气封段，达到断流的效果，然后关闭打开的截止阀；在排气时，打开低液位接管上的截止阀，将气罐内的流体与低液位端接通，这样气罐内的流体会流入低液位端，低液位端开始接受到气罐给予的流体，达到初步开流，继而由于气罐内的气压降低，因此腔室内的空气会进入气罐，气封段内空气减少直至气封效果消失，高液位端的流体也开始流往低液位端，如此流体就会源源不断的流向低液位端，实现完全开流。气罐既是充气气源装置，也是排气接收装置，因此几乎没有气量的损失，同时可免去空压机等额外充气装置，因此额外能量的损耗也很小。 Preferably, the charging and exhausting port is connected to a gas tank through a gas pipe, and the lower end of the gas tank is respectively provided with a high liquid level connection pipe connected to a high liquid level end and a low liquid level end, and a low liquid level connection pipe. The high liquid level connecting pipe and the low liquid level connecting pipe are provided with a shut-off valve to remove the gas pipe closest to the high liquid level end, and the other gas pipe is provided with a one-way exhaust valve, and the one-way exhaust valve can be circulated For the chamber to the gas tank. When inflating, the shut-off valve on the high liquid level pipe is opened, and the water level at the high liquid level is introduced into the gas supply device, and the air in the gas tank is forced to flow out and enters the chamber closest to the high liquid end, due to the characteristics of the gas, although the chamber The fluid at the lower end still exists, but when the air fills the first chamber, the fluid at the lower end of the first chamber is squeezed out and enters the upper end of the second chamber, and so on, and finally the upper end of the subsequent chamber is formed. Gas seal Segment, to achieve the effect of shut-off, and then close the open shut-off valve; When exhausting, open the shut-off valve on the low-level connection, connect the fluid in the gas tank to the low-level end, so that the fluid in the gas tank It will flow into the low liquid end, and the low liquid end will start to receive the fluid given by the gas tank, and the initial opening will be realized. Then, as the air pressure in the gas tank is reduced, the air in the chamber will enter the gas tank, and the air in the gas seal section is reduced. Until the gas seal effect disappears, the fluid at the high liquid level also begins to flow to the low liquid end, so that the fluid will continuously flow to the low liquid end to achieve complete open flow. The gas tank is both an inflating gas source device and an exhaust gas receiving device, so there is almost no loss of gas volume, and at the same time, an additional inflator such as an air compressor can be eliminated, so the loss of extra energy is also small.

作为优选，所述的最靠近高液位端的气管上设有截止阀，所述的最靠近高液位端的气管上的截止阀处于单向排气阀与气罐之间。该截止阀能够控制气罐与腔室之间气体的通断，在必要时可以接通或断开气罐与所有腔室之间的连接，起到安全保护的作用。 Preferably, the gas pipe closest to the high liquid level end is provided with a shut-off valve, and the shut-off valve on the gas pipe closest to the high liquid end is between the one-way exhaust valve and the gas tank. The shut-off valve can control the opening and closing of the gas between the gas tank and the chamber, and can open or close the connection between the gas tank and all the chambers as necessary to provide safety protection.

作为优选，所述的气封段的最低点高度与腔室最低段的上端高度相等，所述的前流体段的最高点高度与腔室最高段的下端高度相等。在此状态下，气封段与前流体段均处在开流、断流的临界点，只要气封段的气体被排掉任意一点，就能实现开流，所以此时能实现开流、断流状态的最快速转化。 Preferably, the lowest point height of the gas seal section is equal to the upper end height of the lowest section of the chamber, and the highest point height of the front fluid section is equal to the lower end height of the highest section of the chamber. In this state, both the gas seal section and the front fluid section are at the critical point of the open flow and the cut flow. As long as the gas in the gas seal section is discharged at any point, the open flow can be realized, so that the open flow can be realized at this time. The fastest conversion of the cutoff state.

作为优选，所述的最靠近高液位接口或者最靠近低液位接口的一个腔室内设有限流机构，所述的限流机构包括设于气封段所在位置上的容纳腔及处于容纳腔上方的限位腔，所述的容纳腔上端设有开口，所述的容纳腔内设有一浮体，所述的浮体上设有一中部带有通孔的挡板，所述的挡板上端伸入限位腔，所述的挡板穿过开口且挡板截面与开口截面相同，所述的浮体下方设有限位卡板，所述的低液位接口处于限流机构下方，所述的容纳腔上端通过气管与气罐相连，所述的容纳腔上端的气管内设有单向排气阀，所述的容纳腔上端的气管内的单向排气阀的可流通方向为容纳腔至气罐。从断流到开流的转换过程，是一个排气进流体的过程，最初时浮体处在空气中，因此不会上浮，挡板中部的通孔并没有完全与腔室管路重合，可流通量较小，此时流体快速冲至最后一个腔室但是却受到限流，因此不易将气封段的空气带出过多至低液位端，待流体充满容纳腔后浮体处于高点，挡板中部通孔与腔室管路重合，可流通量达到最大；从开流到断流的转换过程，是一个充气的过程，最初时容纳腔内都是流体，浮体处于高点，挡板中部通孔与腔室管路重合，可流通量达到最大，当流体排出，气罐内的气体进入到腔室，并进入容纳腔，流体排出后浮体下降，挡板中部的通孔并没有完全与腔室管路重合，可流通量减小，此时进入最后一个腔室中的流体被限流减速，因此不易将充入腔室形成气封段的空气带出至低液位端。 Preferably, the chamber is disposed closest to the high liquid level interface or closest to the low liquid level interface, and the current limiting mechanism includes a receiving chamber disposed at the position of the gas sealing portion and the receiving chamber. The upper limiting cavity is provided with an opening at the upper end of the receiving cavity, the floating cavity is provided with a floating body, and the floating body is provided with a baffle with a through hole in the middle, and the upper end of the baffle extends into the upper end of the baffle a limiting cavity, the baffle passes through the opening and the cross-section of the baffle is the same as the cross-section of the opening, the limiting body is disposed below the floating body, and the low-level interface is below the current limiting mechanism, and the receiving cavity is The upper end is connected to the gas tank through a gas pipe, and the one-way exhaust valve is arranged in the gas pipe at the upper end of the accommodating cavity, and the venting direction of the one-way venting valve in the gas pipe at the upper end of the accommodating cavity is a accommodating cavity to the gas tank . The transition from the flow to the open flow is a process of exhausting the fluid into the fluid. Initially, the floating body is in the air, so it does not rise. The through hole in the middle of the baffle does not completely coincide with the chamber line, and can be circulated. The amount is small, at this time, the fluid quickly rushes to the last chamber but is restricted, so it is not easy to take the air of the gas seal section too much to the low liquid end. After the fluid fills the accommodating chamber, the floating body is at a high point. The through hole in the middle of the plate coincides with the chamber pipe, and the flow rate can be maximized; from the open flow to the cut flow conversion process, It is an aerated process. Initially, the chamber is filled with fluid, the floating body is at a high point, and the through hole in the middle of the baffle coincides with the chamber line, and the flow can be maximized. When the fluid is discharged, the gas in the gas tank enters the cavity. The chamber enters the accommodating chamber. After the fluid is discharged, the floating body descends. The through hole in the middle of the baffle does not completely coincide with the chamber line, and the flow can be reduced. At this time, the fluid entering the last chamber is decelerated by the current limit. Therefore, it is difficult to carry out the air filled in the chamber to form the gas seal section to the low liquid end.

另外，本发明的充气口与排气口也可以分开设置，充气口与排气口分开设置时，排气口位于腔室的顶部，充气口可以设置在腔室的其他位置。 Further, the inflation port and the exhaust port of the present invention may be separately provided. When the inflation port is provided separately from the exhaust port, the exhaust port is located at the top of the chamber, and the inflation port may be disposed at other positions of the chamber.

因此，本发明的有益效果是：（1 )不需要截流件就能实现对流体通断的控制；（2 ) 由于所有腔室实际是一个通路，因此当高低液位端压差过大时能自动疏导减压；（3 )通过气罐与高、低液位端的接通转换来实现给腔室充气、排气，从而实现流体通断控制，靠流体势能就能提供能量，不需要其他能量源，且气罐既是充气气源装置，也是排气接收装置，几乎没有气量的损失，因此额外能量的损耗也很小。附图说明 Therefore, the beneficial effects of the present invention are as follows: (1) control of fluid continuity can be realized without a shut-off member; (2) since all chambers are actually one passage, when the pressure difference between the high and low liquid ends is too large, Automatically diverting and decompressing; (3) Inflating and exhausting the chamber through the on-conversion of the gas tank and the high and low liquid ends, thereby achieving fluid on-off control, providing energy by fluid potential energy, without requiring other energy The source, and the gas tank is both an aerated gas source device and an exhaust gas receiving device, and there is almost no loss of gas volume, so the loss of extra energy is also small. DRAWINGS

图 1是本发明的实施例 1的示意图； Figure 1 is a schematic view of Embodiment 1 of the present invention;

图 2是本发明的实施例 2的示意图； Figure 2 is a schematic view of Embodiment 2 of the present invention;

图 3是本发明的实施例 3的示意图； Figure 3 is a schematic view of Embodiment 3 of the present invention;

图 4是本发明的实施例 4的示意图。 Figure 4 is a schematic view of Embodiment 4 of the present invention.

图中：高液位接口 1、低液位接口 2、腔室 3、气封段 4、前流体段 5、后流体段 6、气罐 7、截止阀 8、单向排气阀 9、容纳腔 10、浮体 11、通孔 12、挡板 13、限位卡板 14， 15、充气泵。实现本发明的最佳方式 In the figure: high level interface 1, low level interface 2, chamber 3, gas seal section 4, front fluid section 5, rear fluid section 6, gas tank 7, shut-off valve 8, one-way exhaust valve 9, housing Cavity 10, floating body 11, through hole 12, baffle 13, limit card 14, 15, air pump. The best way to implement the invention

下面通过实施例，结合附图对本发明做进一步的描述：实施例 1： The present invention will be further described below by way of embodiments with reference to the accompanying drawings:

a.将一管子制成上下起伏的形状，并使其两端分别接至高液位端和低液位端。 a. Make a tube into the shape of up and down, and connect the two ends to the high liquid end And low level end.

b.使流体流入流体通断装置中，推动管子起伏段下端的空气，并将起伏段上端的空气封一部分在起伏的波峰中形成气封段 4，从而形成起伏段下端为流体、上端为空气的流体通断装置。 c.在起伏段顶部开设充排气口，在开流时打开充排气口排气，使气封段 4所占空间减少至不能封住流体并关闭充排气口，此时起伏段上端仅留下少部分空气或无空气，处于通路状态；在断流时利用给气设备对最靠近高液位端的充排气口充气，使起伏段上端部分形成气封段 4。 b. causing the fluid to flow into the fluid switching device, pushing the air at the lower end of the undulating section of the pipe, and forming a portion of the air seal at the upper end of the undulating section to form a gas seal section 4 in the undulating peak, thereby forming a fluid at the lower end of the undulating section and an air at the upper end Fluid switching device. c. Open the charging and exhausting port at the top of the undulating section, and open the charging and exhausting venting when opening, so that the space occupied by the gas sealing section 4 is reduced to not seal the fluid and close the charging and exhausting port. Only a small part of air or no air is left in the passage state; when the flow is cut off, the air supply and exhaust device is used to inflate the air inlet and outlet closest to the high liquid end, so that the upper end portion of the undulation section forms the gas seal section 4.

为了与上述流体通断方法相适应，如图 1所示，本发明的一种流体通断装置包括高液位接口 1、低液位接口 2，所述的高液位接口 1 与低液位接口 2之间设有一个腔室 3，所述的腔室 3内填充有被截流的流体，所述的腔室 3还包括一气封段 4，所述的气封段 4将腔室 3 内的流体分隔为前流体段 5、后流体段 6，所述的腔室 3内的前流体段 5高度大于该腔室 3内的后流体段 6高度，所述的腔室 3顶部设有充排气口。前流体段 5与后流体段 6是连通的且存在液位差，所以会对气封段 4提供压力，该压力等于高液位端与低液位段的压力差，就能实现断流；当需要开流时，打开充排气口排出气封段 4的一部分空气，使气封效果消失即可；当需要再次断流时，通过充排气口利用空压机或其他装置对所有腔室 3内充气至出现气封效果即可。在此过程中，完全不需要截流件，因此不存在截流件在断流后两端存在压差因此容易损坏的问题，也不存在每次开流、断流转换时需要变化截流件的位置、角度，因此截流件容易磨损的问题。而气封段 4是可以在一定范围内变化高度且仍能实现气封效果的，因此具有调节余量，因此当压差增大时能自动调节，且即使压差超过了余量调节范围，由于腔室 3内实际是一个气体、流体通路，因此高液位端的一部分流体会流向低液位端，自动疏导减压，不存在采用截流件时若压差超过安全范围会引起安全事故的问题。 In order to comply with the above fluid switching method, as shown in FIG. 1, a fluid switching device of the present invention includes a high liquid level interface 1, a low liquid level interface 2, and the high liquid level interface 1 and a low liquid level. A chamber 3 is disposed between the interfaces 2, the chamber 3 is filled with a fluid to be intercepted, and the chamber 3 further includes a gas seal section 4, and the gas seal section 4 is to be inside the chamber 3. The fluid is divided into a front fluid section 5 and a rear fluid section 6, wherein the height of the front fluid section 5 in the chamber 3 is greater than the height of the rear fluid section 6 in the chamber 3, and the top of the chamber 3 is provided with a charge. exhaust vent. The front fluid section 5 and the rear fluid section 6 are in communication and there is a liquid level difference, so that the gas seal section 4 is supplied with pressure, which is equal to the pressure difference between the high liquid level end and the low liquid level section, so that the flow can be interrupted; When it is necessary to open the flow, open the charging and exhausting port to discharge a part of the air of the gas sealing section 4, so that the gas sealing effect disappears; when it is necessary to interrupt the flow again, use the air compressor or other device to all the cavity through the charging and exhausting port. The chamber 3 is inflated until a gas seal effect occurs. In this process, there is no need for a shut-off member at all, so there is no problem that the shut-off member has a pressure difference at both ends after the flow-breaking, so that it is easily damaged, and there is no need to change the position of the shut-off member every time the open flow or the cut-off transition occurs, Angle, so the interceptor is prone to wear. The gas seal section 4 can change the height within a certain range and still achieve the gas seal effect, and therefore has the adjustment margin, so that when the pressure difference is increased, it can be automatically adjusted, and even if the pressure difference exceeds the margin adjustment range, Since the chamber 3 is actually a gas and fluid passage, a part of the fluid at the high liquid end will flow to the low liquid end, and the pressure will be automatically decompressed. There is no problem that the safety difference may occur if the pressure difference exceeds the safe range when the shutoff is used. .

实施例 2： Example 2:

一种流体通断方法，适用于存在高低液位差的流体通断的场合， a.将一管子制成依次上下起伏的形状，并使其两端分别接至高液位端和低液位端。 A fluid switching method suitable for the occasion of fluid continuity of high and low liquid level difference, a. The tube is formed into a shape of up and down undulating, and the two ends are respectively connected to the high liquid end and the low liquid end.

b.使流体流入流体通断装置中，推动管子起伏段下端的空气，并将起伏段上端的空气封一部分在起伏的波峰中形成气封段 4，从而形成每一段起伏段下端为流体、上端为空气的流体通断装置。 b. causing the fluid to flow into the fluid switching device, pushing the air at the lower end of the undulating section of the pipe, and forming a portion of the air seal at the upper end of the undulating section to form a gas seal section 4 in the undulating peak, thereby forming a fluid at the lower end of each undulating section, and the upper end It is a fluid switching device for air.

c.在起伏段顶部开设充排气口，在开流时打开充排气口排气，使气封段 4所占空间减少至不能封住流体并关闭充排气口，此时起伏段上端仅留下少部分空气或无空气，处于通路状态；在断流时利用给气设备对最靠近高液位端的充排气口充气，使空气首先灌满第一个起伏，然后依次挤开每一个起伏段下端的流体进入下一个起伏段上端，使所有起伏段上端部分形成气封段 4。为了使本发明结构紧凑及工作时的稳定性，作为另一种实施方式，在步骤 a中，将管子定型成每一个上下起伏的波峰相贴、波谷相贴的形状，将一组相邻的波峰及波谷作为一个腔室 3。而且，在步骤 c中可以设置一个充气气源装置，同时将充气气源装置作为排气接收装置，充气时将高液位端的水位引入充气气源装置，压迫充气气源装置内的空气流出并进入最靠近高液位端的腔室 3，然后依次充满后续腔室 3并最终实现断流；在排气时，将充气气源装置内的流体与低液位端接通，如此其内的流体流向低液位端，腔室 3内气封段 4空气进入排气接收装置，直至气封效果消失，实现通路开流。 c. Open the charging and exhausting port at the top of the undulating section, and open the charging and exhausting venting when opening, so that the space occupied by the gas sealing section 4 is reduced to not seal the fluid and close the charging and exhausting port. Leaving only a small amount of air or no air, in the state of the passage; in the flow interruption, the air supply device is used to inflate the air inlet and outlet closest to the high liquid end, so that the air first fills the first undulation, and then squeezes each The fluid at the lower end of one of the undulating sections enters the upper end of the next undulating section, so that the upper end portions of all the undulating sections form the gas-sealed section 4. In order to make the present invention compact and stable during operation, in another embodiment, in step a, the tube is shaped into a shape in which each of the upper and lower undulating peaks are attached, and the troughs are attached, and a group of adjacent ones are The crests and troughs act as a chamber 3. Moreover, in step c, an inflating gas source device may be disposed, and the inflating gas source device is used as an exhaust gas receiving device. When inflating, the water level at the high liquid level end is introduced into the inflating gas source device, and the air in the inflating gas source device is forced to flow out and Entering the chamber 3 closest to the high liquid level end, and then sequentially filling the subsequent chamber 3 and finally achieving the flow interruption; when exhausting, the fluid in the inflation gas source device is connected to the low liquid level end, so that the fluid therein Flowing to the low liquid level end, the air in the gas seal section 4 in the chamber 3 enters the exhaust gas receiving device until the gas seal effect disappears, and the passage opening is realized.

为了与上述流体通断方法相适应，如图 2所示，本发明的一种流体通断装置包括高液位接口 1、低液位接口 2，所述的高液位接口 1 与低液位接口 2之间设有至少一个腔室 3，所述的腔室 3依次连通，所述的腔室 3内填充有被截流的流体，所述的腔室 3还包括一气封段 4，所述的气封段 4将腔室 3内的流体分隔为前流体段 5、后流体段 6，所述的一个腔室 3内的前流体段 5高度大于该腔室 3内的后流体段 6 高度，所述的腔室 3顶部设有充排气口。所述的充排气口通过气管与一气罐 7相连通，所述的气罐 7下端分别设有与高液位端、低液位端接通的高液位接管、低液位接管，所述的高液位接管与低液位接管上设有截止阀 8，除去最靠近高液位端的气管，其余气管内设有单向排气阀 9，所述的单向排气阀 9的可流通方向为腔室 3至气罐 7。所述的最靠近高液位端的气管上设有截止阀 8，所述的最靠近高液位端的气管上的截止阀 8处于单向排气阀 9与气罐 7之间。该截止阀 8能够控制气罐 7与腔室 3之间气体的通断，在必要时可以接通或断开气罐 7与所有腔室 3之间的连接，起到安全保护的作用。所述的气封段 4 的最低点高度与腔室 3最低段的上端高度相等，所述的前流体段 5的最高点高度与腔室 3最高段的下端高度相等。在此状态下，气封段 4 与前流体段 5均处在开流、断流的临界点，只要气封段 4的气体被排掉任意一点，就能实现开流，所以此时能实现开流、断流状态的最快速转化。所述的最靠近高液位接口 1或者最靠近低液位接口 2的一个腔室 3内设有限流机构，所述的限流机构包括设于气封段 4所在位置上的容纳腔 10及处于容纳腔 10上方的限位腔，所述的容纳腔 10上端设有开口，所述的容纳腔 10内设有一浮体 11，所述的浮体 11上设有一中部带有通孔 12的挡板 13，所述的上端挡板 13伸入限位腔，所述的挡板 13穿过开口且挡板 13截面与开口截面相同，所述的浮体 11下方设有限位卡板 14，所述的低液位接口 2处于限流机构下方，所述的容纳腔 10上端通过气管与气罐 7相连，所述的容纳腔 10上端的气罐 7内设有单向排气阀 9，所述的容纳腔 10上端的气罐 7内的单向排气阀 9的可流通方向为容纳腔 10至气罐 7。从断流到开流的转换过程，是一个排气进流体的过程，最初时浮体 11处在空气中，因此不会上浮，挡板 13中部的通孔 12并没有完全与腔室 3管路重合，可流通量较小，此时流体快速冲至最后一个腔室 3但是却受到限流，因此不易将气封段 4的空气带出过多至低液位端，待流体充满容纳腔 10后浮体 11处于高点，挡板 13中部通孔 12与腔室 3管路重合，可流通量达到最大；从开流到断流的转换过程，是一个充气的过程，最初时容纳腔 10内都是流体，浮体 11处于高点，挡板 13中部通孔 12 与腔室 3管路重合，可流通量达到最大，当流体排出，气罐 7内的气体进入到腔室 3，并进入容纳腔 10，流体排出后浮体 11下降，挡板 13中部 12的通孔并没有完全与腔室 3管路重合，可流通量减小，此时进入最后一个腔室中的流体被限流减速，因此不易将充入腔室 3形成气封段 4的空气带出至低液位端。而且，也可在高液位接口 1或腔室 3中的任何位置设置可活动的流量限制结构，也可保证在通断转换过程中限制流量过大。 In order to comply with the above fluid switching method, as shown in FIG. 2, a fluid switching device of the present invention includes a high liquid level interface 1, a low liquid level interface 2, and the high liquid level interface 1 and a low liquid level. At least one chamber 3 is disposed between the interfaces 2, the chambers 3 are sequentially connected, the chamber 3 is filled with a fluid to be intercepted, and the chamber 3 further includes a gas seal section 4, The gas seal section 4 divides the fluid in the chamber 3 into a front fluid section 5 and a rear fluid section 6, and the height of the front fluid section 5 in the one chamber 3 is greater than the height of the rear fluid section 6 in the chamber 3. The top of the chamber 3 is provided with a charging and exhausting port. The charging and exhausting port is connected to a gas tank 7 through a gas pipe, and the lower end of the gas tank 7 is respectively provided with a high liquid level connection pipe connected to a high liquid level end and a low liquid level end, and a low liquid level connection pipe. The high liquid level pipe and the low liquid level pipe are provided with a shut-off valve 8 to remove the gas pipe closest to the high liquid end, and the other gas pipes are provided with a one-way row. The gas valve 9, the flow direction of the one-way exhaust valve 9 is the chamber 3 to the gas tank 7. The gas pipe closest to the high liquid end is provided with a shut-off valve 8, and the shut-off valve 8 on the gas pipe closest to the high liquid end is between the one-way exhaust valve 9 and the gas tank 7. The shut-off valve 8 can control the on and off of the gas between the gas tank 7 and the chamber 3, and can open or close the connection between the gas tank 7 and all the chambers 3 as necessary to provide a safety protection. The lowest point height of the gas seal section 4 is equal to the upper end height of the lowest section of the chamber 3, and the highest point height of the front fluid section 5 is equal to the lower end height of the highest section of the chamber 3. In this state, both the gas seal section 4 and the front fluid section 5 are at the critical point of the open flow and the cut flow, and as long as the gas of the gas seal section 4 is discharged at any point, the open flow can be realized, so that it can be realized at this time. The fastest conversion of open and closed current conditions. a current limiting mechanism is disposed in a chamber 3 closest to the high liquid level interface 1 or closest to the low liquid level interface 2, and the current limiting mechanism includes a receiving chamber 10 disposed at a position of the gas sealing portion 4 and The upper end of the accommodating chamber 10 is provided with an opening, the accommodating chamber 10 is provided with a floating body 11 , and the floating body 11 is provided with a baffle with a through hole 12 in the middle. The upper end baffle 13 extends into the limiting cavity, the baffle 13 passes through the opening, and the cross section of the baffle 13 is the same as the opening cross section, and the limiting body plate 14 is disposed under the floating body 11. The low liquid level interface 2 is disposed under the current limiting mechanism, and the upper end of the receiving chamber 10 is connected to the gas tank 7 through a gas pipe, and the gas tank 7 at the upper end of the receiving chamber 10 is provided with a one-way exhaust valve 9, The flow direction of the one-way exhaust valve 9 in the gas tank 7 at the upper end of the accommodating chamber 10 is the accommodating chamber 10 to the gas tank 7. The transition from the flow to the open flow is a process of exhausting the fluid into the fluid. Initially, the floating body 11 is in the air, so that it does not rise, and the through hole 12 in the middle of the baffle 13 is not completely in line with the chamber 3. Coincidence, the flow rate is small, at this time, the fluid quickly rushes to the last chamber 3 but is restricted, so it is not easy to bring the air of the gas seal section 4 out to the low liquid level end, and the fluid fills the accommodating chamber 10 The rear floating body 11 is at a high point, and the through hole 12 in the middle of the baffle 13 coincides with the pipe of the chamber 3, and the flow rate can be maximized; the conversion process from the open flow to the cut flow is an inflation process, initially accommodating the cavity 10 All of the fluids, the floating body 11 is at a high point, the central through hole 12 of the baffle 13 coincides with the line of the chamber 3, and the flow rate reaches the maximum. When the fluid is discharged, the gas in the gas tank 7 enters the chamber 3 and enters the accommodation. In the chamber 10, after the fluid is discharged, the floating body 11 is lowered, and the through hole of the central portion 12 of the baffle 13 is not completely coincident with the chamber 3, and the flow can be reduced. At this time, the fluid entering the last chamber is decelerated by the current limit. Therefore, it is difficult to form the air-filled section 4 into the cavity 3 Out to the low level side. Moreover, it can also be used in high level interface 1 or cavity An active flow restriction structure is provided at any location in chamber 3, and it is also guaranteed to limit excessive flow during the on-off transition.

最初要断流时，将高液位端接口、低液位端接口分别与高液位端、低液位端相接，使高液位端流体流入腔室 3，流体进入腔室 3后沉积在下端，因此腔室 3下端的空气被流体挤开并往后推动直至排出，而腔室 3上端的空气会存留在腔室 3中并形成气封段 4，最终多个腔室 3形成了气封段 4和被气封段 4隔断的前流体段 5、后流体段 6，而后一个腔室 3的前流体段 5与前一个腔室 3的后流体段 6是连通的且存在液位差，所以会对前一个腔室 3的气封段 4提供压力，所有腔室 3以此类推，所有流体段液位差提供的压力之和顶住高液位端与低液位段的压力差，就能实现断流。当需要首次开流时，排出气罐 7内的一部分空气，气罐 7内压力降低，因此腔室 3内气封段 4的空气会有一部分进入气罐 7，气封效果消失，实现开流，此时每个腔室 3上端仍然存在一部分空气或无空气。当需要断流时，打开高液位接管上的截止阀 8，将高液位端的水位引入气罐 7，压迫气罐 7内的空气流出并进入最靠近高液位端的腔室 3，由于气体的特性，虽然腔室 3内下端的流体依然存在，但是当空气充满第一个腔室 3后，会挤开处于第一个腔室 3下端的流体并进入第二个腔室 3上端，以此类推，最终达到后续腔室 3上端均形成气封段 4，达到断流的效果，然后可关闭打开着的截止阀 8，而此时若不关闭打开着的截止阀 8也可，那么在一定范围由于高、低液位端的压差与气罐 7加上腔室 3中的压力相等时，也能维持断流效果，而且在此范围内若气封段 4不处于极限状态时，还可以自动调节气封段高度使高液位端、低液位端达到平衡，维持断流效果；而再次需要开流时，打开低液位接管上的截止阀 8，将气罐 7内的流体与低液位端接通，这样气罐 7内的流体会流入低液位端，低液位端开始接受到气罐 7给予的流体，达到初步开流，继而由于气罐 7内的气压降低，因此腔室 3内的空气会进入气罐 7，气封段 4内空气减少直至气封效果消失，高液位端的流体也开始流往低液位端，如此流体就会源源不断的流向低液位端，实现完全开流。 When the flow is initially interrupted, the high liquid end interface and the low liquid end interface are respectively connected to the high liquid end and the low liquid end, so that the high liquid end fluid flows into the chamber 3, and the fluid enters the chamber 3 and deposits. At the lower end, therefore, the air at the lower end of the chamber 3 is squeezed by the fluid and pushed back until it is discharged, and the air at the upper end of the chamber 3 remains in the chamber 3 and forms the gas seal section 4, and finally the plurality of chambers 3 are formed. The gas seal section 4 is separated from the front fluid section 5 and the rear fluid section 6 which are blocked by the gas seal section 4, and the front fluid section 5 of the latter chamber 3 is in communication with the rear fluid section 6 of the preceding chamber 3 and has a liquid level Poor, so the pressure will be applied to the gas seal section 4 of the previous chamber 3, and all chambers 3 and so on, the sum of the pressures provided by the liquid level difference of all the fluid sections will withstand the pressure of the high liquid level end and the low liquid level section. Poor, you can achieve the flow. When the first flow is required, a part of the air in the gas tank 7 is exhausted, and the pressure in the gas tank 7 is lowered. Therefore, a part of the air in the gas seal section 4 in the chamber 3 enters the gas tank 7, and the gas seal effect disappears, thereby realizing the open flow. At this time, there is still a part of air or no air at the upper end of each chamber 3. When the flow is required to be interrupted, the shut-off valve 8 on the high liquid level connection is opened, and the water level at the high liquid level is introduced into the gas tank 7, and the air in the gas tank 7 is forced to flow out and enter the chamber 3 closest to the high liquid end due to the gas. The characteristic is that although the fluid at the lower end of the chamber 3 still exists, when the air fills the first chamber 3, the fluid at the lower end of the first chamber 3 is squeezed out and enters the upper end of the second chamber 3, In this way, finally, the gas seal section 4 is formed at the upper end of the subsequent chamber 3 to achieve the effect of shutting off, and then the open shut-off valve 8 can be closed, and if the open shut-off valve 8 is not closed at this time, then In a certain range, since the pressure difference between the high and low liquid ends is equal to the pressure in the chamber 7 plus the chamber 3, the current interruption effect can be maintained, and if the gas seal section 4 is not in the limit state within this range, The height of the gas seal section can be automatically adjusted to balance the high liquid level end and the low liquid level end to maintain the flow interruption effect; and when the flow is required again, the shutoff valve 8 on the low liquid level connection tube is opened, and the fluid in the gas tank 7 is opened. Connected to the low level Thus, the fluid in the gas tank 7 will flow into the low liquid end, and the low liquid end will start to receive the fluid given by the gas tank 7 to reach the preliminary opening flow, and then the air in the chamber 3 is lowered due to the decrease in the gas pressure in the gas tank 7. Will enter the gas tank 7, the air in the gas seal section 4 is reduced until the gas seal effect disappears, and the fluid at the high liquid end also begins to flow to the low liquid end, so that the fluid will continuously flow to the low liquid end to achieve complete open flow. .

实施例 3： Example 3:

一种流体通断方法，适用于存在高低液位差的流体通断的场合，其包括下列步骤： A fluid switching method suitable for the occasion of fluid continuity of high and low liquid level difference, It includes the following steps:

b. 使流体流入流体通断装置中，推动管子起伏段下端的空气，并将起伏段上端的空气封一部分在起伏的波峰中形成气封段 4，从而形成每一段起伏段下端为流体、上端为空气的流体通断装置。 b. causing the fluid to flow into the fluid switching device, pushing the air at the lower end of the undulating section of the pipe, and forming a portion of the air seal at the upper end of the undulating section to form a gas seal section 4 in the undulating peak, thereby forming a fluid at the lower end of each undulation section, and the upper end It is a fluid switching device for air.

c 在起伏段顶部开设充排气口，在开流时打开充排气口排气，使气封段 4所占空间减少至不能封住流体并关闭充排气口，此时起伏段上端仅留下少部分空气或无空气，处于通路状态；在断流时利用给气设备对充排气口充气，使空气灌入每一个起伏，使所有起伏段上端部分形成气封段 4。 c Open the charging and exhausting port at the top of the undulating section, open the exhaust and exhaust vents during the opening, so that the space occupied by the gas-sealed section 4 is reduced to the extent that the fluid cannot be sealed and the charging and exhausting ports are closed. Leaving a small amount of air or no air, in the passage state; in the flow interruption, the air supply and exhaust device is used to inflate the charging and exhausting port, so that the air is poured into each of the undulations, so that the upper end portions of all the undulating sections form the gas sealing section 4.

为了与上述流体通断方法相适应，如图 3所示，本发明的一种流体通断装置包括高液位接口 1、低液位接口 2，所述的高液位接口 1 与低液位接口 2之间设有至少一个腔室 3，所述的腔室 3依次连通，所述的腔室 3内填充有被截流的流体，所述的腔室 3还包括一气封段 4，所述的气封段 4将腔室 3内的流体分隔为前流体段 5、后流体段 6，所述的一个腔室 3内的前流体段 5高度大于该腔室 3内的后流体段 6 高度，所述的腔室 3顶部设有充排气口。所述的充排气口通过气管与一气罐 7相连通，所述的气罐 7下端分别设有与高液位端、低液位端接通的高液位接管、低液位接管，所述的高液位接管与低液位接管上设有截止阀 8，充排气口上方的气管内设有截止阀 8。所述的气封段 4的最低点高度与腔室 3最低段的上端高度相等，所述的前流体段 5 的最高点高度与腔室 3最高段的下端高度相等。在此状态下，气封段 4与前流体段 5均处在开流、断流的临界点，只要气封段 4的气体被排掉任意一点，就能实现开流，所以此时能实现开流、断流状态的最快速转化。 In order to comply with the above fluid switching method, as shown in FIG. 3, a fluid switching device of the present invention includes a high liquid level interface 1, a low liquid level interface 2, and the high liquid level interface 1 and a low liquid level. At least one chamber 3 is disposed between the interfaces 2, the chambers 3 are sequentially connected, the chamber 3 is filled with a fluid to be intercepted, and the chamber 3 further includes a gas seal section 4, The gas seal section 4 divides the fluid in the chamber 3 into a front fluid section 5 and a rear fluid section 6, and the height of the front fluid section 5 in the one chamber 3 is greater than the height of the rear fluid section 6 in the chamber 3. The top of the chamber 3 is provided with a charging and exhausting port. The charging and exhausting port is connected to a gas tank 7 through a gas pipe, and the lower end of the gas tank 7 is respectively provided with a high liquid level connection pipe connected to a high liquid level end and a low liquid level end, and a low liquid level connection pipe. The high liquid level connection pipe and the low liquid level connection pipe are provided with a shutoff valve 8, and the gas pipe above the charging and exhausting port is provided with a shutoff valve 8. The lowest point height of the gas seal section 4 is equal to the upper end height of the lowest section of the chamber 3, and the highest point height of the front fluid section 5 is equal to the lower end height of the highest section of the chamber 3. In this state, both the gas seal section 4 and the front fluid section 5 are at the critical point of the open flow and the cut flow, and as long as the gas of the gas seal section 4 is discharged at any point, the open flow can be realized, so that it can be realized at this time. The fastest conversion of open and closed current conditions.

实施例 4 : Example 4:

在图 4所示的实施例 4中，管子被定型成每一个上下起伏的波峰相间隔、波谷相间隔的形状，将一组相邻的波峰及波谷作为一个腔室，本实施例的充气口与排气口分开设置，充气口设置在腔室的较低位置，排气口设置在腔室的顶部，本实施例设置一个充气泵 15，充气时通过充气口对每个腔室进行充气并最终实现断流；排气时通过排气口将腔室内气封段的空气排出，直至气封效果消失，实现通路开流，其余和实施例 3相同。 In the embodiment 4 shown in Fig. 4, the tube is shaped such that the peaks of each of the upper and lower undulations are spaced apart, the valleys are spaced apart, and a set of adjacent crests and troughs are used as a chamber, the inflation port of this embodiment. Separated from the exhaust port, the air inlet is set at the lower position of the chamber The exhaust port is disposed at the top of the chamber. In this embodiment, an air pump 15 is provided. When inflating, each chamber is inflated through the inflation port and finally realizes a flow interruption; when exhausting, the chamber is ventilated through the exhaust port. The air of the seal is discharged until the gas seal effect disappears, and the passage opening is realized, and the rest is the same as in the third embodiment.

除上述实施例外，在发明的权利要求书及说明书所公开的范围内，本发明的技术特征或技术数据可以进行重新选择及组合，从而构成新的实施例，这些都是本领域技术人员无需进行创造性劳动即可实现的，因此这些本发明没有详细描述的实施例也应视为本发明的具体实施例而在本发明的保护范围之内；另外，在进出口互换的情况下，本发明的结构可以照常工作，因此，这样的实施方式也在本发明的保护范围之内。 In addition to the above-described embodiments, the technical features or technical data of the present invention may be re-selected and combined to form new embodiments within the scope of the claims and the disclosure of the present invention, which are not required by those skilled in the art. The inventive work can be carried out, and thus the embodiments which are not described in detail in the present invention are also considered as the specific embodiments of the present invention and are within the scope of the present invention. In addition, in the case of import and export interchange, the present invention The structure can operate as usual, and thus such an embodiment is also within the scope of the present invention.

Claims

权利要求书 Claim

1.一种流体通断方法，适用于存在高低液位差的流体通断的场合，其包括下列步骤： A fluid on-off method suitable for use in the presence or absence of fluid continuity of high and low level differences, comprising the steps of:

a.将一管子制成依次上下起伏的形状，并使其两端分别接至高液位端和低液位端； a. The tube is formed into a shape of up and down undulating, and the two ends thereof are respectively connected to the high liquid end and the low liquid end;

B.使流体流入流体通断装置中，推动管子起伏段下端的空气，并将起伏段上端的空气封一部分在起伏的波峰中形成气封段（4)，从而形成每一段起伏段下端为流体、上端为空气的流体通断装置； B. flowing fluid into the fluid switching device, pushing the air at the lower end of the undulating section of the tube, and forming a portion of the air seal at the upper end of the undulating section in the undulating peak to form a gas seal section (4), thereby forming a fluid at the lower end of each undulating section. , the upper end of the air fluid switching device;

C.在起伏段顶部开设充排气口，在开流时打开充排气口排气，使气封段（4) 所占空间减少至不能封住流体并关闭充排气口，此时起伏段上端仅留下少部分空气或无空气，处于通路状态；在断流时利用给气设备对最靠近高液位端的充排气口充气，使空气首先灌满第一个起伏，然后依次挤开每一个起伏段下端的流体进入下一个起伏段上端，使所有起伏段上端部分形成气封段（4)。 C. Open the charging and exhausting port at the top of the undulating section, open the exhaust and exhaust vents during the opening, so that the space occupied by the gas sealing section (4) is reduced to the extent that the fluid cannot be sealed and the charging and exhausting ports are closed. Only a small part of air or no air is left at the upper end of the section, and it is in a passage state; when the flow is interrupted, the air supply and exhaust device is used to inflate the air inlet and outlet closest to the high liquid end, so that the air first fills the first undulation, and then squeezes in order. The fluid at the lower end of each undulation section enters the upper end of the next undulation section, so that the upper end portions of all the undulation sections form a gas seal section (4).

2.根据权利要求 1所述的一种流体通断方法，其特征是，在步骤 a中，将管子定型成每一个上下起伏的波峰相贴或间隔、波谷相贴或间隔的形状，将一组相邻的波峰及波谷作为一个腔室（3 )。 2 . The fluid continuity method according to claim 1 , wherein in step a, the tube is shaped into a shape in which each of the upper and lower undulating peaks are attached or spaced, and the troughs are attached or spaced. The adjacent peaks and troughs of the group act as a chamber (3).

3.根据权利要求 3所述的一种流体通断方法，其特征是，在步骤 c中，设置一个充气气源装置，同时将充气气源装置作为排气接收装置，充气时将高液位端的流体引入充气气源装置，压迫充气气源装置内的空气流出并进入最靠近高液位端的腔室（3 )，然后依次充满后续腔室（3 ) 并最终实现断流；在排气时，将充气气源装置内的流体与低液位端接通，如此其内的流体流向低液位端，腔室（3 ) 内气封段 (4 ) 空气进入排气接收装置，直至气封效果消失，实现通路开流。 3. A fluid switching method according to claim 3, wherein in step c, an inflating gas source device is provided, and the inflating gas source device is used as an exhaust gas receiving device, and a high liquid level is inflated. The fluid at the end is introduced into the inflation air source device, and the air in the inflation air source device is forced to flow out and enters the chamber (3) closest to the high liquid end, and then sequentially fills the subsequent chamber (3) and finally realizes the flow interruption; , the fluid in the gas source device The low liquid level end is turned on, so that the fluid therein flows to the low liquid level end, and the air sealing section (4) in the chamber (3) enters the exhaust gas receiving device until the gas sealing effect disappears, thereby realizing the opening of the passage.

4.一种流体通断方法，适用于存在高低液位差的流体通断的场合，其包括下列步骤： 4. A fluid switching method suitable for use in the presence of high and low level difference fluid switching, comprising the steps of:

b.使流体流入流体通断装置中，推动管子起伏段下端的空气，并将起伏段上端的空气封一部分在起伏的波峰中形成气封段（4)，从而形成每一段起伏段下端为流体、上端为空气的流体通断装置； b. causing the fluid to flow into the fluid switching device, pushing the air at the lower end of the undulating section of the tube, and forming a portion of the air seal at the upper end of the undulating section in the undulating peak to form a gas seal section (4), thereby forming a fluid at the lower end of each undulating section. , the upper end of the air fluid switching device;

c.在起伏段顶部开设充排气口，在开流时打开充排气口排气，使气封段（4 ) 所占空间减少至不能封住流体并关闭充排气口，此时起伏段上端仅留下少部分空气或无空气，处于通路状态；在断流时利用给气设备对充排气口充气，使空气灌入每一个起伏，使所有起伏段上端部分形成气封段（4)。 c. Open the charging and exhausting port at the top of the undulating section, and open the charging and exhausting venting when opening the flow, so that the space occupied by the gas sealing section (4) is reduced to not seal the fluid and close the charging and exhausting port. The upper end of the section leaves only a small amount of air or no air, and is in a passage state; when the flow is interrupted, the air supply and exhaust device is used to inflate the air inlet and outlet, so that air is poured into each of the undulations, so that the upper end portions of all the undulating sections form a gas seal section ( 4).

5.根据权利要求 4所述的一种流体通断方法，其特征是，在步骤 a中，将管子定型成每一个上下起伏的波峰相贴或间隔、波谷相贴或间隔的形状，将一组相邻的波峰及波谷作为一个腔室（3 )。 The fluid switching method according to claim 4, wherein in the step a, the tube is shaped into a shape in which each of the upper and lower undulating peaks are attached or spaced, and the troughs are attached or spaced, and The adjacent peaks and troughs of the group act as a chamber (3).

6.根据权利要求 5所述的一种流体通断方法，其特征是，在步骤 c中，设置一个充气装置，充气时通过充排气口对每个腔室进行充气并最终实现断流；排气时通过充排气口将腔室内气封段的空气排出，直至气封效果消失，实现通路开流。 The fluid switching method according to claim 5, wherein in step c, an inflating device is provided, and each chamber is inflated through the charging and exhausting port when inflating, and finally the flow is interrupted; When exhausting, the air in the air-sealed section of the chamber is exhausted through the charging and exhausting port until the gas sealing effect disappears, and the passage opening is realized.

7.—种流体通断装置，包括高液位接口（1 )、低液位接口（2 )，其特征是，所述的高液位接口（1)与低液位接口（2)之间设有至少一个腔室（3)，所述的腔室（3) 依次连通，所述的腔室（3) 内填充有被截流的流体，所述的腔室（3) 还包括一气封段（4)，所述的气封段（4)将腔室（3) 内的流体分隔为前流体段（5)、后流体段（6)，所述的一个腔室（3) 内的前流体段（5) 高度大于该腔室（3) 内的后流体段（6) 高度，所述的腔室（3) 顶部设有充排气口。 7. A fluid switching device, including a high liquid level interface (1), a low liquid level interface (2), The utility model is characterized in that at least one chamber (3) is arranged between the high liquid level interface (1) and the low liquid level interface (2), and the chambers (3) are sequentially connected, the chamber (3) filled with trapped fluid, said chamber (3) further comprising a gas seal section (4), said gas seal section (4) separating the fluid in the chamber (3) into a pre-fluid a section (5), a rear fluid section (6), a height of the front fluid section (5) in the one chamber (3) is greater than a height of the rear fluid section (6) in the chamber (3), The top of the chamber (3) is provided with a charge and exhaust port.

8.根据权利要求 7所述的流体通断装置，其特征是，所述的充排气口通过气管与一气罐（7)相连通，所述的气罐（7)下端分别设有与高液位端、低液位端接通的高液位接管、低液位接管，所述的高液位接管与低液位接管上设有截止阀（ 8 )，除去最靠近高液位端的气管，其余气管内设有单向排气阀（9)，所述的单向排气阀（9) 的可流通方向为腔室（3) 至气罐（7)。 The fluid switching device according to claim 7, wherein the charging and exhausting port is connected to a gas tank (7) through a gas pipe, and the lower end of the gas tank (7) is respectively provided with a high The liquid level end, the low liquid level end is connected to the high liquid level connection tube, the low liquid level connection tube, and the high liquid level connection tube and the low liquid level connection tube are provided with a shutoff valve (8) to remove the gas tube closest to the high liquid level end The other air pipes are provided with a one-way exhaust valve (9), and the one-way exhaust valve (9) can flow in a direction from a chamber (3) to a gas tank (7).

9.根据权利要求 7所述的流体通断装置，其特征是，所述的最靠近高液位端的气管上设有截止阀（8)，所述的最靠近高液位端的气管上的截止阀（8) 处于单向排气阀（9) 与气罐（7) 之间。 The fluid switching device according to claim 7, wherein the gas pipe closest to the high liquid end is provided with a shut-off valve (8), and the cut-off on the gas pipe closest to the high liquid end The valve (8) is between the one-way exhaust valve (9) and the gas cylinder (7).

10.根据权利要求 7或 8或 9所述的流体通断装置，其特征是，气封段（4) 的最低点高度与腔室（3) 最低段的上端高度相等。 10. A fluid switching device according to claim 7 or 8 or 9, characterized in that the lowest point height of the gas seal section (4) is equal to the upper end height of the lowest section of the chamber (3).

11.根据权利要求 7或 8或 9所述的流体通断装置，其特征是，前流体段（5) 的最高点高度与腔室（3) 最高段的下端高度相等。 A fluid switching device according to claim 7 or 8 or 9, wherein the height of the highest point of the front fluid section (5) is equal to the height of the lower end of the highest section of the chamber (3).

12.根据权利要求 7所述的流体通断装置，其特征是，所述的最靠近高液位接口（1) 或者最靠近低液位接口（2) 的一个腔室（3) 内设有限流机构，所述的限流机构包括设于气封段（4) 所在位置上的容纳腔（10)及处于容纳腔（10)上方的限位腔，所述的容纳腔（10) 上端设有开口，所述的容纳腔（10) 内设有一浮体（11)，所述的浮体（11) 上设有一中部带有通孔（12) 的挡板（13)，所述的上端挡板（13)伸入限位腔，所述的挡板（13) 穿过开口且挡板（13)截面与开口截面相同，所述的浮体（11) 下方设有限位卡板（14)，所述的低液位接口（2) 处于限流机构下方，所述的容纳腔（10) 上端通过气管与气罐（7) 相连，所述的容纳腔（10) 上端的气管内设有单向排气阀（9)，所述的容纳腔（10)上端的气管内的单向排气阀（9) 的可流通方向为容纳腔（10) 至气罐（7)。 The fluid switching device according to claim 7, characterized in that the chamber (3) closest to the high liquid level interface (1) or closest to the low liquid level interface (2) is provided with a limit a flow mechanism, wherein the current limiting mechanism is disposed at a position of the gas seal section (4) a receiving cavity (10) and a limiting cavity above the receiving cavity (10), the upper end of the receiving cavity (10) is provided with an opening, and the receiving cavity (10) is provided with a floating body (11), The floating body (11) is provided with a baffle (13) with a through hole (12) in the middle, the upper end baffle (13) projects into the limiting cavity, and the baffle (13) passes through the opening and The cross section of the baffle (13) is the same as the cross section of the opening, and the limiting body plate (14) is disposed under the floating body (11), and the low liquid level interface (2) is below the current limiting mechanism, and the receiving cavity ( 10) The upper end is connected to the gas tank (7) through a gas pipe, and the air pipe inside the upper end of the accommodating chamber (10) is provided with a one-way exhaust valve (9), and the single pipe in the upper end of the accommodating chamber (10) The flow direction to the exhaust valve (9) is the accommodating chamber (10) to the gas cylinder (7).