Fluid circulation system with pressure stabilizing device

Abstract

The invention discloses a fluid circulation system with a pressure stabilizer, which mainly comprises a pressure chamber, a main switch valve, a return conduit, a built-in valve and the like, the pressure chamber is connected with the return conduit, and the built-in valve in the pressure chamber is connected with the return conduit.

Description

Technical Field

[0001] The present invention relates to the field of fluid circulation technology, and more particularly to a gaseous or gas-liquid fluid circulation system with a pressure stabilization device. A gaseous fluid circulation system refers to a pressure chamber containing only gaseous fluid, which can be either a monomolecular gas or a multimolecular gas. In contrast, a gas-liquid fluid circulation system contains both gaseous and liquid fluids, each retaining its original physical characteristics. Therefore, gas-liquid fluids should not be considered mixed fluids. Background Art

[0002] Gaseous fluids have amazing properties: they have no natural interfaces and are the only substances in nature that have the highest fluidity, the highest compressibility, and the highest expansibility.

[0003] Liquid fluids also possess amazing properties: although extremely soft, they are incompressible and are the only substances in nature with only one natural interface. Moreover, this natural interface is naturally horizontal.

[0004] Under natural conditions, the flow law of gaseous fluids is to flow in the direction of lower pressure; the flow law of liquid fluids is to succumb to gravity.

[0005] It is hoped that the properties of these substances can be used to develop suitable fluid circulation systems to serve mankind. Summary of the Invention

[0006] The present invention provides a fluid circulation system with a pressure stabilizing device to solve the problem in the prior art that fluid circulation usually requires the fluid to be discharged to a normal environment before being reused. If it is a pressurized fluid, it is basically simply discharged, which is very wasteful. Even the supercharging device of an automobile can only recover a small part of the pressurized gas for recycling.

[0007] On the one hand, the present invention provides a fluid circulation system with a pressure stabilizing device, including a pressure chamber, a main switch valve, a gaseous fluid or a gas-liquid fluid, a built-in valve, a return duct, etc.; the main switch valve is connected to the pressure chamber and the return duct and can make the two open or closed; the built-in valve in the pressure chamber is connected to the return duct.

[0008] According to a fluid circulation system with a pressure stabilizing device provided by the present invention, if the fluid in the pressure chamber is a gas-liquid fluid, the height of the liquid fluid should completely submerge the fluid outlet provided on the pressure chamber, and the gaseous fluid cannot enter the return duct from the fluid outlet.

[0009] According to the fluid circulation system with a pressure stabilizing device provided by the present invention, the pressure chamber may be provided with a plurality of fluid outlets, which are respectively connected to the same number of return conduits.

[0010] According to a fluid circulation system with a pressure stabilizing device provided by the present invention, the pressure chamber is provided with a plurality of fluid outlets, and the fluid outlets can be connected to a return conduit with a larger inner diameter.

[0011] According to the fluid circulation system with a pressure stabilizing device provided by the present invention, the return conduit can be connected to one or more loads and other devices.

[0012] According to the fluid circulation system with a pressure stabilizing device provided by the present invention, the built-in valve is installed in the pressure chamber 1 and connected to the return conduit.

[0013] On the other hand, the present invention also provides a fluid circulation system with a pressure stabilizing device, including a pressure chamber, a main switch valve, a gaseous fluid or a gas-liquid fluid, a built-in valve, and a reflux duct; the fluid can only flow through the fluid outlet and the reflux duct, and then enter the pressure chamber through the built-in valve, and the fluid is not allowed to flow back.

[0014] According to a fluid circulation system with a pressure stabilizing device provided by the present invention, the flow cross-sectional area of the built-in valve can be smaller than, equal to, or larger than the flow cross-sectional area of the return pipe.

[0015] The fluid circulation system with a pressure stabilizing device provided by the present invention has the following characteristics: Even if the fluid is subjected to pressure or resistance from both a certain direction and a specified direction at the same time, the fluid is only allowed to flow in the specified direction first, and the fluid is not allowed to flow in the opposite direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a structural diagram of the gas-liquid fluid circulation system provided by the present invention; Figure 2 is a structural diagram of the gaseous fluid circulation system provided by the present invention; Reference numerals: Pressure chamber 1, gaseous fluid 1-1, liquid fluid 1-11, pressure input device 1-2, safety device (pressure relief) 1-3, liquid fluid replenishment port 1-4, fluid outlet 1-5, main switch valve 1-6, built-in valve 2, pressure stabilizing device or one-way non-return device 3, return conduit 4, load 5, flow valve 6. DETAILED DESCRIPTION

[0018] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0019] The gas-liquid fluid circulation system of the present invention will be described below with reference to the accompanying drawings.

[0020] Figure 1 This is one of the structural diagrams provided by the present invention.

[0021] like Figure 1 As shown, P is the pressure value of pressure chamber 1, P1 is the pressure measurement point of fluid outlets 1-5 of pressure chamber 1, P2 is the pressure measurement point of the outlet of internal valve 2, and P3 is the pressure measurement point at the connection between internal valve 2 and return conduit 4. These pressure measurement points do not represent the actual structure of the fluid circulation system; they are only for easy understanding.

[0022] The pressure chamber 1 is one of the most important core components of the fluid circulation system. It is a hollow object with a large internal volume. Because it must withstand high pressures, it is typically constructed from sturdy materials. While typically cylindrical in shape, it can also be other cubical shapes with length, width, and height.

[0023] The main switch valves 1-6 are respectively connected to the pressure chamber 1 and the reflux conduit 4 and can open or close the two.

[0024] The return conduit 4 is a relatively long, slender tube that serves as a fluid passage. Most of the return conduit is outside the pressure chamber, with a small portion entering the chamber. For ease of description and understanding, the return conduit that enters the chamber is referred to as the internal return conduit. In addition to being connected to the pressure chamber 1 and the internal valve 2, the return conduit 4 can also be connected to a flow valve 6, a pressure stabilizing device or a one-way check valve (or both) 3, a load 5, and other components. Furthermore, multiple loads 5 can be connected to the return conduit 4.

[0025] The pressure chamber 1 is also equipped with a pressure input device 1-2, a safety device (pressure relief) 1-3, and a liquid fluid replenishment port 1-4. The pressure chamber 1 can contain various fluids. For a gas circulation system, only the gaseous fluid 1-1 is required. For a gas-liquid circulation system, both the gaseous fluid 1-1 and the liquid fluid 1-11 are provided. The gaseous fluid 1-1 is a highly compressible and highly expansible pressurized fluid, while the liquid fluid 1-11 is a fluid that can flow under sufficient pressure.

[0026] If gas-liquid fluid is used, the height (or depth) of the liquid fluid 1-11 in the pressure chamber 1 must completely submerge the fluid outlet 1-5 (e.g. Figure 1 As shown, the liquid fluid 1-11 is marked with two arrows. The upper arrow points to the surface of the liquid fluid, which can also be understood as the interface or interaction surface between the liquid fluid and the gaseous fluid 1-1. The lower arrow points to the liquid of the liquid fluid 1-11 itself. This ensures that the gaseous fluid 1-1 cannot enter the return conduit 4 through the fluid outlet 1-5. It should be noted that the outlet 1-5 is the outlet of the pressure chamber 1.

[0027] When the main switch valve 1-6 is opened, an openable and closable channel will be formed between the pressure chamber 1 and the built-in valve 2.

[0028] The gaseous fluid 1-1 in the pressure chamber 1 is usually input by a pressure input device 1-2 such as an air compressor, a gas tank or the like.

[0029] Taking the gas-liquid fluid circulation system as an example, when the pressure of the gaseous fluid 1-1 in the pressure chamber 1 reaches the set pressure value, the gaseous fluid 1-1 tries to occupy more of the limited space in the pressure chamber 1, and will force the liquid fluid 1-11 to flow from the fluid outlet 1-5 of the pressure chamber 1 into the return duct 4. The return duct 4 then inputs the liquid fluid 1-11 to the connection between the built-in valve 2 and the return duct. The built-in valve 2 is forced to open under the fluid pressure from the pressure chamber and the gravity of the liquid fluid 1-11, so that the liquid fluid 1-11 can flow back into the pressure chamber 1.

[0030] The pressure chamber 1 typically only requires one fluid outlet 1-5 at its lower position to connect to the return conduit 4. However, if necessary, the pressure chamber 1 may also be provided with multiple fluid outlets 1-5, each of which can be connected to an equal number of independent return conduits 4. When the pressure of the gaseous fluid 1-1 within the pressure chamber 1 reaches a set pressure value, the liquid fluid 1-11 is forced from each fluid outlet 1-5 into the corresponding return conduit 4. The return conduit 4 then transports the liquid fluid 1-11 to the connection between the built-in valve 2 and the return conduit within the pressure chamber. In addition to being connected to multiple return ducts 4 respectively, the several fluid outlets 1-5 of the pressure chamber 1 can also be connected to a return duct 4 with a larger inner diameter; when the pressure of the gaseous fluid 1-1 in the pressure chamber 1 reaches a set value, the compressed liquid fluid 1-11 flows from the fluid outlets 1-5 into this return duct 4 with a larger inner diameter, and then is input into the connection between the built-in valve 2 in the pressure chamber and the return duct through this return duct 4 with a larger inner diameter. The built-in valve 2 is forced to open under the fluid pressure from the pressure chamber and the gravity of the liquid fluid 1-11, so that the liquid fluid 1-11 can flow back into the pressure chamber 1.

[0031] The pressure chamber 1 is usually also equipped with accessories such as a pressure input device 1-2, a safety device (pressure relief) 1-3, a liquid fluid replenishment port 1-4, and a flow valve 6.

[0032] The built-in valve 2 is one of the most important core components in the fluid circulation system.

[0033] The internal valve 2 is essentially a one-way valve in the broadest sense, meaning it prevents reverse flow of fluid. It can take many different forms, such as linear one-way valves, rotary one-way valves, self-opening and closing one-way valves, and controllable one-way valves. Self-opening and closing one-way valves or controllable one-way valves are typically the primary choices. Because they are installed within the pressure chamber, they are collectively referred to as internal valves.

[0034] The pressure stabilizing device 3 is a device that can stabilize the pressure of the circulation system and even increase the pressure of the circulation system. The pressure stabilizing device is connected to the return conduit 4, and can be connected to the return conduit outside the pressure chamber 1 or inside the pressure chamber.

[0035] The voltage stabilizing device 3 has several different control forms, such as mechanical control, motor control or fluid control. Mechanical control or motor control voltage stabilizing devices are mostly mature products, but they require external power to maintain.

[0036] The fluid-controlled pressure-stabilizing device 3 can independently provide pressure stabilization. Its working chamber is a fluid channel equipped with at least one one-way valve, allowing fluid to flow out of the pressure chamber outlets 1-5 and toward the internal valve, but not backflow. If multiple one-way valves are installed, the pressure stabilization effect will be even better.

[0037] How it works The gas-liquid fluid circulation principle is more complicated than the gaseous fluid circulation principle, so the gas-liquid fluid circulation principle is used as the basis for explanation.

[0038] A certain amount of gaseous fluid 1-1 and liquid fluid 1-11 are respectively fed into the pressure chamber 1. Due to the effects of density and gravity, the liquid fluid 1-11 is always below the gaseous fluid 1-1. The height of the liquid fluid must always submerge the fluid outlet 1-5 to ensure that the gaseous fluid 1-1 in the pressure chamber 1 cannot escape from the fluid outlet 1-5 under any conditions, and to ensure that the gaseous fluid cannot enter the return duct 4 from beginning to end, always maintaining a constant state and constant quantity. The so-called constant state means that the gaseous fluid always has a set constant pressure in the pressure chamber 1; and the so-called constant quantity means that the spatial volume of the gaseous fluid is always kept unchanged.

[0039] The upper surface of liquid fluid 1-11 is a naturally free-flowing surface, meaning it naturally has a horizontal interface. The gaseous fluid 1-1 within the pressure chamber 1 evenly covers the upper surface of liquid fluid 1-11, passively forming a horizontal interface on the lower surface of gaseous fluid 1-1. Consequently, the upper surface of liquid fluid 1-11 bears the average pressure within the pressure chamber 1.

[0040] The liquid fluid 1-11 can usually easily flow from the fluid outlet 1-5 of the pressure chamber 1 to the return conduit 4. However, because the gaseous fluid 1-1 in the pressure chamber 1 has sufficient pressure, it is quite difficult for the liquid fluid 1-11 to re-enter the pressure chamber 1.

[0041] Pascal's law states that fluid pressure in a sealed container will be uniformly applied to all points. Therefore, the gaseous fluid 1-1 within pressure chamber 1, which has reached the set pressure, will also be uniformly applied to all points. However, the "uniform application" mentioned here primarily refers to the outlet of built-in valve 2 and fluid outlets 1-5 within pressure chamber 1.

[0042] At this point, the pressure P exerted by gaseous fluid 1-1 on the surface of liquid fluid 1-11 is completely equal at all points within pressure chamber 1 (pressure measurement points P1 and P2 are equivalent). As for measurement point P3, where internal valve 2 connects to the return conduit, it may or may not be equal to the pressure P within pressure chamber 1 and measurement points P1 and P2. The key to "equal" or "unequal" here is the "open" or "closed" state of main on / off valve 1-6.

[0043] If the main switch valve 1-6 is in the "closed" state, the pressure chamber 1 and the connection between the built-in valve 2 and the return pipe are not connected, and the pressure value of the measuring point P3 is lower than the pressure values of the measuring points P1 and P2 in the pressure chamber 1.

[0044] If the main switch valve 1-6 is in the "open" state at this time, there are two possibilities: 1. The outlet of the built-in valve 2 is still not opened, then the pressure value of the measuring point P3 should be equal to the pressure values of the measuring points P1 and P2 in the pressure chamber 1; 2. The outlet of the built-in valve 2 is opened, and the liquid fluid 1-11 flows out from the outlet of the built-in valve 2, then the pressure value of the measuring point P3 should be lower than the pressure values of the measuring points P1 and P2 in the pressure chamber 1, and as the flow rate of the liquid fluid 1-11 continues or even increases, according to the Bernoulli principle, the greater the difference between the pressure value of the measuring point P3 and the pressure values of the measuring points P1 and P2.

[0045] It is common sense that if the pressure at the measuring point P3 is equal to or less than the pressure at the measuring points P1 and P2, the liquid fluid 1-11 may not be able to break through the barrier of the gaseous fluid 1-1 and cannot flow back into the pressure chamber 1. If the pressure at the measuring point P3 is greater than the pressure at the measuring points P1 and P2, the liquid fluid 1-11 should be able to break through the barrier of the gaseous fluid 1-1 and flow back into the pressure chamber 1.

[0046] In reality, once main on-off valve 1-6 is opened, a channel is formed between pressure chamber 1 and the connection between internal valve 2 and the return duct. Gaseous fluid 1-1 will immediately flow toward the connection between internal valve 2 and the return duct, attempting to break through the "defense" of internal valve 2 and flow upstream into the return duct. Meanwhile, liquid fluid 1-11, already full in the return duct, will also immediately flow downward. Of course, these are merely "trends" of both at the moment main on-off valve 1-6 is opened.

[0047] If the gaseous fluid 1-1 and the liquid fluid 1-11 are personified, the gaseous fluid 1-1 most hopes to exchange positions with the liquid fluid 1-11 and enter the built-in valve 2, while the liquid fluid 1-11 hopes to break through the barrier of the gaseous fluid 1-1 and enter the pressure chamber 1.

[0048] Once the pressure of the gaseous fluid 1 - 1 in the pressure chamber 1 increases and reaches a sufficient pressure, the liquid fluid 1 - 11 will be forced to flow from the fluid outlet 1 - 5 of the pressure chamber 1 into the built-in valve 2 .

[0049] Furthermore, liquid fluid 1-11 possesses another inherent advantage: the density of the flexible, adaptable liquid fluid 1-11 is far greater than that of the gaseous fluid 1-1. The density difference between the two, at equal volumes, is hundreds of times greater, a significant disparity. If the potential "wall adhesion" and interfacial "tension" effects of liquid fluid 1-11 could be eliminated, the gaseous fluid 1-1 would be unable to prevent the liquid fluid 1-11 from falling due to gravity. In other words, if the very low-density gaseous fluid 1-1 were forced to avoid the much denser liquid fluid 1-11 and, thus, fall under the acceleration of gravity, the gaseous fluid 1-1 within the pressure chamber 1 would be unable to resist the downward flow of the liquid fluid 1-11 within the one-way non-return device 2.

[0050] The flow continuity of the liquid fluid 1-11 is sufficient to prevent the reverse-flowing gaseous fluid 1-1 from exchanging positions with the forward-flowing liquid fluid 1-11.

[0051] As long as the retrograde gaseous fluid 1-1 and the antegrade liquid fluid 1-11 do not exchange positions, the circulation of the liquid fluid 1-11 from the pressure chamber 1 through the reflux conduit 4 to the built-in valve 2 and then back to the pressure chamber 1 is possible.

[0052] As liquid fluid 1-11 continuously flows through the one-way check valve 2, the space previously occupied by gaseous fluid 1-1 in pressure chamber 1 is compressed. Consequently, the pressure P within pressure chamber 1 increases, forcing the liquid fluid to continue flowing from fluid outlet 1-5 to return conduit 3. This maintains the volume and pressure of gaseous fluid 1-1 within pressure chamber 1, restoring total pressure equilibrium. Meanwhile, liquid fluid 1-11, which flows from fluid outlet 1-5 to return conduit 4, is forced back into internal valve 2 by the pressure of gaseous fluid 1-1 and then flows downward into pressure chamber 1, completing the cycle.

[0053] Example 1 Consider a connecting pipe with three branches. The diameter of the horizontal main pipe can be larger or the same as that of each branch. The branches have the same height and diameter, and the center branch B is spaced the same distance from branch A and branch C. Each branch is open to the atmosphere.

[0054] When water is injected from any branch, it can be seen that the height of the water in each branch is the same, which means that the pressure in each branch is the same, which conforms to Pascal's law.

[0055] Example 2 Take the connecting pipe from the previous paragraph and completely seal the upper end of branch C. When water is injected from branch B, it can be seen that the water height in branches A and B is the same, while the water height in branch C is slightly lower. This indicates that there is unvented atmosphere in branch C, and the pressure of the unvented atmosphere is greater than the pressure of the water in branches A and B, which conforms to Pascal's law.

[0056] Example 3 Taking the connecting pipe from the previous example, branch A is bent and extended above branch C, but not connected to branch C. Branch B is not connected to branches A or C, but to another pressure air pipe (which cannot leak). The upper end of branch C is open, and the lower end where it connects to the horizontal main pipe is equipped with a switch, but it is closed, so the upper part of branch C is also open to the atmosphere. At this point, it is no longer a connecting pipe.

[0057] By continuously inputting a certain pressure gas into branch B, it can be seen that the water in branch A quickly reaches the top of branch C and flows into branch C until it overflows, indicating that the pressure in branch A is greater than the pressure in branch C. This conforms to both Pascal's theorem and Bernoulli's theorem - the water in branch A has a longer flow path, a larger flow rate and a higher flow rate, so the pressure is lower than the pressure in the horizontal main pipe and branch B.

[0058] Example 4 Take the connecting pipe in the previous paragraph, bend and extend branch pipe A to connect to branch pipe C. The switch installed at the connection between the lower end of branch pipe C and the horizontal main pipe is still in the closed state, which shows that there is unexhausted air in the pipe diameter connecting branch pipes A and C. Branch pipe B is still connected to another pressure air pipe.

[0059] Continuously injecting a constant level of pressurized gas into branch B reveals that the water in branch A reaches the upper portion of branch C and flows into branch C, leaving the remaining gas floating above it. At this point, the pressurized gas injection into branch B ceases, maintaining the current state. If structural factors are eliminated, the pressure in branch B is now the highest, followed by branch A, and the lowest in branch C. This conforms to both Pascal's law and Bernoulli's theorem—the pressures in each branch are effectively equal.

[0060] Opening the switch at the connection between the lower end of branch C and the horizontal main pipe reveals that the remaining gas in branch C rapidly moves toward branch A and settles at the high point of the curved extension of branch A. A small portion of water in branch A exchanges positions with the gas in branch C. Meanwhile, the water in the horizontal main pipe rapidly flows into branches C and B, with the gas and water in branch B each occupying a portion of the space. This indicates that the remaining gas in branches B and C also exchanges positions with some of the water in the horizontal main pipe, ultimately achieving pressure equilibrium. This is consistent with both Pascal's law and Bernoulli's theorem.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A fluid circulation system with a pressure stabilizing device, mainly composed of a pressure chamber, a main switch valve, a return conduit, a built-in valve, etc., characterized by: The pressure stabilizing device is connected to the reflux conduit, and can be connected to the reflux conduit outside the pressure cabin or inside the pressure cabin.

2. A fluid circulation system according to claim 1, characterized in that: The voltage stabilizing device may be mechanically controlled, motor controlled or fluid controlled.

3. A fluid circulation system according to claim 1, characterized in that: The inner cavity of the fluid-controlled pressure-stabilizing device is a fluid channel, which is equipped with at least one one-way valve to allow the fluid flowing out of the pressure chamber outlet to flow toward the built-in valve.

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