A new gas blocking and liquid draining device and application method

Abstract

The application discloses a novel gas-blocking and liquid-diffusing device, which comprises a fluid pipeline, a reverse conical pipeline is installed through the bottom end of the fluid pipeline, small balls are placed in the reverse conical pipeline, a plurality of intersecting curve grooves are formed on the surface of the small balls, a venturi is installed through the middle of the bottom end of the reverse conical pipeline, and a complete flow channel is formed among the fluid pipeline, the reverse conical pipeline and the venturi. In the application, when gas is introduced into the fluid pipeline, the gas has a great resistance when passing through the curve grooves and the venturi due to the pressure difference and the capillary phenomenon, and the device can prevent the gas from passing through due to the blockage of the small balls; when liquid passes through the fluid pipeline, the liquid has a small resistance when passing through the curve grooves and the venturi, and the surface of the small balls is densely provided with the curve grooves, so that the liquid can flow into the venturi through the curve grooves, and the small balls float up to make the liquid more smoothly flow into an external container or pipeline through the venturi.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fluid mechanics equipment, in particular to a novel gas blocking and liquid draining device and application method. BACKGROUND

[0002] Pipeline transportation is common in city life and industrial production, such as water delivery system, sewage discharge system, gas or natural gas delivery system and industrial oil delivery system. During the process of gas pipeline transportation, leakage may occur, which not only causes energy waste, but also may cause serious leakage accidents, threatening the safety of pipeline transportation. During the process of liquid pipeline transportation, especially during pipeline maintenance, part of the gas may enter the pipeline, thereby reducing the efficiency of liquid transportation, and in severe cases, may cause gas blocking phenomenon, endangering the service life of the pipeline.

[0003] At present, most of the gas blocking devices are relatively complex and need to be driven by external power. The present application provides a novel gas blocking and liquid draining device, which uses small balls with grooves to effectively prevent gas leakage, reduce gas waste, achieve good energy-saving effect, and ensure the smooth passage of liquid. SUMMARY

[0004] The present application aims to provide a novel gas blocking and liquid draining device and application method to solve the problems in the background art.

[0005] To solve the above technical problems, the present application provides the following technical scheme: a novel gas blocking and liquid draining device, comprising a fluid pipeline, a reverse tapered pipeline is installed through the bottom end of the fluid pipeline, small balls are placed in the reverse tapered pipeline, the surface of the small balls is provided with a plurality of intersecting curved grooves, a venturi tube is installed through the middle of the bottom end of the reverse tapered pipeline, and a complete flow channel is formed between the fluid pipeline, the reverse tapered pipeline and the venturi tube.

[0006] Further, the density of the small balls is lower than that of the liquid in the fluid pipeline, and the small balls are processed into a hollow structure.

[0007] Further, the density of the small balls is lower than that of the liquid in the fluid pipeline, and the small balls are processed into a solid structure.

[0008] Further, the depth and width of the curved grooves are both 0.5-1mm, and the curved grooves intersect to form an interconnected flow channel.

[0009] Further, the diameter of the venturi tube is 0-3mm.

[0010] Further, when there is only gas in the fluid pipeline, the small ball with the curved groove will fall to the connection of the inverted conical pipeline and the Venturi tube due to its own gravity, which can prevent gas from passing through and prevent gas leakage.

[0011] When there is liquid in the fluid pipeline, the liquid can normally enter the Venturi tube due to the curved groove and the characteristics of the Venturi tube, and the small ball will float up at this time, so that the liquid can normally flow through, and the gas will not pass through the Venturi tube.

[0012] Compared with the prior art, the beneficial effects achieved by the present application are:

[0013] In the present application, when gas is introduced into the fluid pipeline, due to the existence of pressure difference and capillary phenomenon, the resistance of the gas passing through the curved groove and the Venturi tube is large, and the small ball blocks the gas, so that the device can better prevent the gas from passing through; when liquid passes through the fluid pipeline, due to the small resistance of the liquid passing through the curved groove and the Venturi tube and the dense curved grooves on the surface of the small ball, the liquid can flow into the Venturi tube through the curved groove, at this time the small ball floats up, so that the liquid can more smoothly pass through the Venturi tube and flow into the external container or pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, which together with the embodiments of the present application, serve to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0015] Figure 1 is a structural schematic diagram of the present application;

[0016] Figure 2 is a perspective view of the present application;

[0017] Figure 3 is a structural schematic diagram of the small ball of the present application.

[0018] Fig. 4(a) is a graph of the relationship between the groove radius and the capillary force pressure difference (the fluid is air);

[0019] Fig. 4(b) is a graph of the relationship between the groove radius and the capillary force pressure difference (the fluid is water).

[0020] In the drawings: 1. fluid pipeline; 2. inverted conical pipeline; 3. small ball; 4. curved groove; 5. Venturi tube. DETAILED DESCRIPTION

[0021] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0022] Embodiment one:

[0023] As shown in the accompanying drawings of the specification Figure 1 A new type of gas blocking and liquid draining device shown in Fig. 4 comprises a fluid pipeline 1, a reverse tapered pipeline 2 is installed through the bottom end of the fluid pipeline 1, small balls 3 are placed in the reverse tapered pipeline 2, the surface of the small balls 3 is provided with a plurality of intersecting curved grooves 4, a venturi 5 is installed through the middle of the bottom end of the reverse tapered pipeline 2, and a complete flow channel is formed between the fluid pipeline 1, the reverse tapered pipeline 2 and the venturi 5.

[0024] Further, the density of the small balls 3 is lower than the density of the liquid in the fluid pipeline 1, and the small balls 3 are processed into a hollow structure.

[0025] Further, the density of the small balls 3 is lower than the density of the liquid in the fluid pipeline 1, and the small balls 3 are processed into a solid structure.

[0026] Further, the depth and width of the curved grooves 4 are both 0.5-1 mm, and the curved grooves 4 form an interconnected flow channel.

[0027] Further, the pipeline diameter of the venturi 5 is 0-3 mm.

[0028] Further, when there is only gas in the fluid pipeline 1, the small balls with the curved grooves 4 will fall at the connection between the reverse tapered pipeline 2 and the venturi 5 due to their own gravity, which can prevent the gas from passing through, thereby preventing gas leakage.

[0029] When there is liquid passing through the fluid pipeline 1, the liquid can normally enter the venturi 5 due to the characteristics of the curved grooves 4 and the venturi 5, at this time, the small balls 3 will float up, so that the liquid can normally flow, and the gas will not pass through the venturi 5.

[0030] When gas is introduced into the fluid pipeline 1, due to the pressure difference and the existence of capillary phenomenon, the gas has great resistance when passing through the curved groove 4 and the Venturi tube 5, and the device can better prevent the gas from passing through due to the blockage of the small ball 3; when the fluid pipeline 1 has liquid passing through, due to the small resistance of the liquid passing through the curved groove 4 and the Venturi tube 5 and the dense curved groove 4 on the surface of the small ball 3, the liquid can flow into the Venturi tube 5 through the curved groove 4, at this time the small ball floats up to make the liquid more smoothly pass through the Venturi tube 5 and flow into the external container or pipeline.

[0031] Example two:

[0032] The relevant theoretical analysis process is as follows:

[0033] Since the device is mainly connected with the pipeline for use, the related theoretical calculation can be based on Bernoulli equation:

[0034]

[0035] Simplify to get:

[0036]

[0037] Wherein: h f is the head loss, z2-z1 is the height difference between the inlet and outlet, v2-v1 is the velocity difference between the inlet and outlet, p is the fluid density, g is the acceleration of gravity, and ΔP=P1-P2 is the pressure difference between the inlet and outlet of the device;

[0038] The curved groove 4 on the surface of the small ball 3 and the Venturi tube 5 are both fine channels, and when the fluid passes through the fine channel, there will be capillary force, and its calculation formula is:

[0039]

[0040] Wherein: γ is the capillary force, θ is the contact angle, r is the radius of the fine tube, and h is the fluid immersion height;

[0041] Let be the pressure difference generated by the capillary effect, then:

[0042]

[0043] For gas, the pressure difference generated by the capillary force should be greater than the pipeline pressure difference, so that the device achieves the effect of blocking gas, that is:

[0044]

[0045] For liquid, the pressure difference generated by the capillary force should be less than the pipeline pressure difference, so that the liquid can smoothly flow through the device, that is:

[0046]

[0047] The calculation is made according to the formula (2)-(6) with air as the gas and water as the liquid, and the rest of the parameters are selected according to various standards, and the calculation results are shown in Figs. 4(a) and 4(b):

[0048] According to the calculation results shown in Figs. 4(a) and 4(b), when r (the radius of the curved groove 4) is in the range of 0.25-0.5 mm, the requirement of blocking gas and draining water can be met. Therefore, the depth and width of the curved groove 4 are selected to be 0.5-1 mm.

[0049] According to the known conclusion, the resistance of the fine channel to the liquid flowing through is about 1000 times that to the gas flowing through, so the gas is difficult to pass through the Venturi tube 5 and the fine channel such as the curved groove 4, while the liquid can pass through more easily. Therefore, when the gas is introduced into the fluid pipeline 1, the small ball 3 with the curved groove 4 will fall at the inlet of the Venturi tube 5 due to the gravity, and the resistance of the gas passing through the curved groove 4 and the Venturi tube 5 is large due to the existence of the pressure difference and the capillary phenomenon. Meanwhile, the small ball 3 blocks the gas passing through, so that the device can better prevent the gas from leaking, thereby achieving the effect of preventing the gas from leaking. When the liquid passes through the fluid pipeline 1, the liquid can pass through the curved groove 4 and flow into the Venturi tube 5 due to the small resistance of the liquid passing through the curved groove 4 and the Venturi tube 5, and the small ball 3 is floating due to the dense curved groove 4 on the surface of the small ball 3, so that the liquid can more smoothly pass through the Venturi tube 5 and flow into the external container or pipeline, while the gas cannot pass through due to the characteristics of the Venturi tube, so that the gas is prevented from leaking.

[0050] It should be noted that the relational terms herein such as first and second and the like are used only to differentiate one entity or operation from another, and do not necessarily require or imply that any such actual relationship or order exists between or among the entities or operations. Also, the terms "comprising", "including", or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0051] Finally, it should be noted that the above description is only the preferred embodiments of the present application, and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A new type of gas blocking and liquid releasing device comprising a fluid conduit (1), characterized in that: The bottom end of the fluid pipe (1) is provided with an inverted conical pipe (2), and a small ball (3) is arranged in the inverted conical pipe (2), the surface of the small ball (3) is provided with a plurality of intersecting curved grooves (4), the middle of the bottom end of the inverted conical pipe (2) is provided with a venturi (5), and a complete flow channel is formed among the fluid pipe (1), the inverted conical pipe (2) and the venturi (5); when only gas is in the fluid pipe, the small ball (3) with the curved grooves (4) falls to the communication position of the inverted conical pipe (2) and the venturi (5) due to gravity, so that gas passing and gas leakage are prevented; when liquid passes through the fluid pipe, the liquid can normally enter the venturi (5) due to the curved grooves and the characteristics of the venturi (5), at this time, the small ball (3) floats up, so that the liquid normally flows, and the gas cannot pass through the venturi (5).

2. A novel gas blocking and liquid channeling device according to claim 1, characterized in that: The density of the small ball (3) is lower than that of the liquid in the fluid pipe (1), and the small ball (3) is processed into a hollow structure.

3. The novel gas blocking and liquid releasing device according to claim 1, characterized in that: The density of the small ball (3) is lower than that of the liquid in the fluid pipe (1), and the small ball (3) is processed into a solid structure.

4. The novel gas blocking and liquid channeling device according to claim 1, characterized in that: The depth and width of the curved grooves (4) are both 0.5-1 mm, and the curved grooves (4) form a flow channel.

5. The novel gas blocking and liquid channeling device according to claim 1, wherein: The diameter of the venturi (5) is 0-3 mm.

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