Oil-gas mixing device

Abstract

The oil-gas mixing device comprises an upstream delivery pipe and a distribution core arranged at the downstream end of the upstream delivery pipe. The outlet of the upstream delivery pipe is a tapered hole with a small upstream diameter and a large downstream diameter. The upstream end face of the cylindrical body of the distribution core is provided with a taper. The taper with a small upstream taper diameter and a large downstream taper diameter is arranged in the tapered hole. The cylindrical body of the distribution core is provided with a flow passage. The upstream end of the flow passage is communicated with a tapered annular clamping cavity between the taper and the tapered hole. The oil-gas mixture is led out from the downstream end of the flow passage. A swirl channel for guiding the rotational flow of the oil-gas is arranged between the hole wall of the tapered hole and the taper surface of the taper. The oil-gas mixing device of the technical scheme can uniformly distribute the oil-gas mixture to each lubricating branch.

Description

Technical Field

[0001] This utility model relates to the lubrication of moving parts of equipment, and more specifically to an oil-gas medium distributor for lubricating equipment in the gas-liquid phase. Background Technology

[0002] The use of pressurized gas to deliver lubricating media for equipment movement has been widely adopted. Technicians have designed various oil-gas distributors to deliver lubricating media to multiple independent equipment components that require lubrication.

[0003] The technical solution disclosed in the document entitled "Cylindrical Built-in Oil-Gas Distributor" (Document No. CN201884916U, hereinafter referred to as Document 1) is applicable to multi-point lubrication of tandem bearings. It includes a front distribution plate 1, a rear distribution plate 4, and a distribution core 2 installed in the front distribution plate 1. The outlet end of the front distribution plate 1 is a radial tapered hole that is adapted to the tapered body of the cylindrical inlet end of the distribution core 2 to form a tapered clamping cavity with the large diameter end of the cavity. Twenty oil inlets are evenly distributed circumferentially on the end face of the inlet end of the distribution core 2, thereby distributing oil and gas to the pipelines connecting each lubrication point.

[0004] The invention, entitled "A Novel Oil and Gas Distributor" (Document No. CN203757352U, hereinafter referred to as Document 2), consists of an inlet screw 1, a distribution core 2 mounted on the left end of the inlet screw, a housing 3 on the outside of the distribution core, and a sealing ring 4 on the contact surface between the distribution core and the housing to prevent oil and gas leakage. The right end of the inlet screw 1 is configured as an oil and gas hole 5, with a circular hole 6 at the front and a conical hole 7 at the rear. The left end of the inlet screw is the distribution core, and the right end of the distribution core is configured as a conical body 8. This conical body extends into the conical hole 7 at the rear of the right oil and gas hole. This structure facilitates the dispersion of oil and gas along the surface of the conical body, forming a uniform annular oil film.

[0005] In Reference 1, the outlet end of the front distribution plate 1 has a radial conical hole, which forms a conical annular cavity with the conical body at the cylindrical inlet end of the distribution core 2. In Reference 2, the distribution core 2 and the conical hole 7 at the rear section of the oil and gas port also form a conical annular cavity. This is essentially the same technical approach as References 1 and 2. This design approach makes it difficult to achieve a homogeneous gas-liquid phase. Due to its two-phase characteristics, its flow pattern is much more complex than that of single-phase flow. The gas-liquid mixed flow mode is affected by factors such as gas phase velocity, liquid phase velocity, pipe inclination angle, pipe diameter, and oil viscosity. For a horizontally placed pipe, the most unfavorable and typical mode is that the gas and liquid phases are completely separated, with gas flowing in the upper part and liquid flowing in the lower part, with a smooth interface between them. The gas and liquid phase velocities are both low, and gravity plays a dominant role, causing the denser oil to naturally settle at the bottom of the pipe.

[0006] Therefore, those skilled in the art have long paid attention to this issue and invested a lot of energy, financial resources and time. Typical solutions represented by references 1 and 2 have been proven to be difficult to achieve the required lubrication at each lubrication point. Utility Model Content

[0007] The purpose of this invention is to provide an oil-gas homogenizer that distributes oil and gas to each lubrication branch in a uniform ratio.

[0008] To achieve the above objectives, this application provides the following technical solution: an oil-gas homogenizer, comprising an upstream distribution pipe and a distribution core with a downstream end of the upstream distribution pipe. The outlet of the upstream distribution pipe is a conical hole with a small upstream diameter and a large downstream diameter. The upstream end face of the columnar body of the distribution core has a cone. The cone with a small upstream diameter and a large downstream diameter is placed inside the conical hole. The columnar body of the distribution core has a flow passage. The upstream end of the flow passage is connected to a conical annular cavity between the cone and the conical hole. The oil-gas mixing medium is led out from the downstream end of the flow passage. A swirl channel is provided between the hole wall of the conical hole and the conical surface of the cone to guide the rotating flow of oil and gas.

[0009] In the above technical solution, a vortex channel is set between the wall of the conical hole and the conical surface of the cone to guide the rotating flow of oil and gas. With the guidance and constraint of the vortex channel, the oil and gas flow is accompanied by rotational motion. This ensures that the medium arriving at the inlet of each flow path contains both gas and oil, and that all flow paths, regardless of their height, have the same oil-gas mixture medium introduced. This ensures that the oil-gas ratio of the medium discharged from all flow paths is basically the same, thereby satisfying the lubrication requirements and lubrication effect of all lubrication points. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 , 3 Figures 4, 5, and 6 are exploded structural diagrams of the three-dimensional structure of the embodiment. Detailed Implementation

[0012] Referring to the attached drawings, an oil-gas homogenizer includes an upstream distribution pipe 10 and a distribution core 20 with a downstream end of the upstream distribution pipe 10. The outlet of the upstream distribution pipe 10 is a conical hole 11 with a small upstream diameter and a large downstream diameter. The upstream end face of the columnar body 21 of the distribution core 20 has a cone 22 with a small upstream diameter and a large downstream diameter. The cone 22 is placed inside the conical hole 11. The columnar body 21 of the distribution core 20 has a flow passage 23. The upstream end of the flow passage 23 is connected to the conical annular cavity between the cone 22 and the conical hole 11. The oil-gas mixing medium is led out from the downstream end of the flow passage 23. The characteristic feature is that a vortex channel for guiding the rotational flow of oil and gas is provided between the hole wall of the conical hole 11 and the conical surface of the cone 22.

[0013] Figure 1 In the process, the oil-gas mixture is transported to the upstream end of the upstream distribution pipe 10. After passing through the small-diameter throat, it reaches the conical annular or conical tube-shaped chamber area formed between the wall of the conical hole 11 and the conical surface of the cone 22 and flows from upstream to downstream in a diffused manner. During the flow, the oil-gas mixture is guided and constrained by the swirling channel. The oil-gas medium also rotates. Even if there is a clear oil-gas boundary in the upstream section of the conical hole 11, the medium arriving at the inlet of each flow path 23 must include both oil and gas phases. This avoids the phenomenon in the prior art where there is more oil phase in the flow path at the low position and less oil phase in the flow path at the high position, or even only single-phase medium. This ensures that the oil-gas mixture delivered to each lubrication point has a consistent mixing ratio.

[0014] The following are specific embodiments of the swirl channel configuration scheme in this application, in conjunction with the accompanying drawings.

[0015] Example 1

[0016] The swirl channel is composed of a swirl groove 221a or a swirl rib 221b provided in the downstream section of the cone 22, and the swirl groove 221a or the swirl rib 221b rotate in the same direction.

[0017] Figure 1 , 2 The diagram shows a scheme in which a swirl channel 221a is provided in the downstream section of the cone 22. Figure 4 The diagram shows a scheme in which swirl bars 221b are provided in the downstream section of cone 22.

[0018] It should be noted that, in Figure 2 In the middle, the area between adjacent swirl channels 221a can be regarded as swirl ribs, and similarly... Figure 4 The adjacent swirl bars 221b form a swirl channel.

[0019] A swirling channel can be formed by setting a swirling groove 221a or a swirling rib 221b on the downstream section of the cone 22. Setting a swirling groove 221a or a swirling rib 221b on the downstream section of the cone 22 requires less processing work and can achieve the desired swirling effect.

[0020] The upstream end face of the columnar body 21 of the cone 22 has a groove 211 surrounding the cone bottom of the cone 22. The groove opening of the groove 211 points in the same direction as the cone tip of the cone 22. The upstream end of the flow passage 23 is connected to the bottom of the groove 211, and the groove opening of the groove 211 is connected to the downstream end of the cavity between the cone 22 and the conical hole 11. In the above scheme, there is a groove 211 surrounding the bottom of the cone 22 on the upstream end face of the columnar body 21 of the cone 22. The outer groove edge of the groove 211 fits against the downstream end face of the conical hole 11. The groove opening of the groove 211 is directly opposite the clamping port formed between the cone 22 and the conical hole 11. Preferably, the cross-section of the swirling groove 221a and the groove 211 is U-shaped, which realizes the smooth connection between the clamping port formed between the cone 22 and the conical hole 11 and the groove area of ​​the U-shaped groove 211. In addition, the U-shaped cross-section of the swirling groove 221a reduces flow resistance and energy consumption while ensuring the confinement of oil and gas swirling.

[0021] It should be noted that there are relatively many possible configurations for the swirl bar 221b, and they are easy to implement. For example, the outer periphery of the swirl bar 221b cross section may be inverted U-shaped or the swirl bar 221b may be blade-shaped.

[0022] In this application, the upstream delivery pipe 10 and the distribution core 20 can be housed within a casing. To prevent media leakage, a circumferential annular groove can be provided on the outer circumferential surface of the upstream delivery pipe 10 and the distribution core 20 to accommodate a sealing ring. See [link to relevant documentation] Figure 1 A groove is provided on the annular groove on the outer peripheral wall of the left end of the upstream distribution pipe 10 and on the peripheral surface of the distribution core 20 to accommodate the sealing ring. In addition, an end face groove for accommodating the sealing ring is provided at the downstream port of the flow passage 23 on the distribution core 20. The sealing ring is not shown in the figure.

[0023] like Figure 1 As shown, the downstream end of the through passage 23 extends to the downstream end face of the columnar body 21, which is beneficial for connecting oil and gas transmission pipelines.

[0024] Example 2

[0025] Combination Figure 3 , 6 The difference between this embodiment 2 and embodiment 1 is that the swirling channel is composed of a swirling groove 111a or a swirling rib 111b on the wall of the tapered hole 11 to guide the swirling of oil and gas.

[0026] Preferably, the swirling groove 111a is arranged on the wall of the downstream end of the conical hole 11, and the groove cavity of the swirling groove 111a is connected to the groove cavity 211 surrounding the bottom of the cone 22 at the upstream end face of the columnar body 21 of the cone 22.

[0027] The swirling rib 111b is connected to the groove 211 surrounding the cone bottom of the cone 22 at the upstream end face of the columnar body 21 of the cone 22.

[0028] In the above scheme, the swirling groove 111a, swirling rib 111b, swirling groove 221a and swirling rib 221b are arranged in a spiral shape along the length of the groove or rib. Under the constraint and guidance of the spiral groove or rib, the oil film flows spirally from upstream to downstream. On the other hand, it is also alternately reflected between the hole wall of the conical hole 11 and the conical surface of the cone 22. The oil film and the airflow mix with each other, so that the oil and gas reaching all parts of the circumference of the groove 211 are in a uniform mixed state. This ensures that the oil and gas mixture with a consistent mixing ratio flows into the upstream port of the flow path 23. It can be seen that the above scheme reduces flow resistance while ensuring that the amount of lubricant that guarantees the lubrication effect can be provided to the lubrication point.

[0029] The above embodiments 1 and 2 can be performed according to Figure 2 , 3 The specific combinations shown in 4, 5, and 6 constitute a vortex scheme. For the function and effect, please refer to the description of Example 1. It should be noted that... Figure 6 In the scheme shown, attention should be paid to avoiding interference between the swirl ribs 111b and 221b, that is, the swirl ribs 111b and 221b should be arranged in a staggered manner.

Claims

1. An oil-gas homogenizer, comprising an upstream distribution pipe (10) and a distribution core (20) disposed at the downstream end of the upstream distribution pipe (10), wherein the outlet of the upstream distribution pipe (10) is a conical hole (11) with a smaller upstream diameter and a larger downstream diameter, the upstream end face of the columnar body (21) of the distribution core (20) has a cone (22), the cone (22) with a smaller upstream diameter and a larger downstream diameter is placed in the conical hole (11), the columnar body (21) of the distribution core (20) has a flow passage (23), the upstream end of the flow passage (23) is connected to a conical annular cavity between the cone (22) and the conical hole (11), and the oil-gas mixing medium is led out from the downstream end of the flow passage (23), characterized in that: A vortex channel is provided between the wall of the conical hole (11) and the conical surface of the cone (22) to guide the rotating flow of oil and gas.

2. The oil-gas homogenizer according to claim 1, characterized in that: The swirling channel is composed of a swirling groove (221a) or a swirling rib (221b) provided in the downstream section of the cone (22), and the swirling groove (221a) or the swirling rib (221b) rotate in the same direction.

3. The oil-gas homogenizer according to claim 2, characterized in that: The upstream end face of the columnar body (21) of the cone (22) has a groove (211) surrounding the cone bottom of the cone (22). The groove opening of the groove (211) points in the same direction as the cone tip of the cone (22). The upstream end of the flow passage (23) is connected to the bottom of the groove (211), and the groove opening of the groove (211) is connected to the downstream end of the cavity between the cone (22) and the conical hole (11).

4. The oil-gas homogenizer according to claim 2 or 3, characterized in that: The cross-sections of the swirl channel (221a) and the groove (211) are U-shaped.

5. The oil-gas homogenizer according to claim 2, characterized in that: The outer periphery of the swirl bar (221b) has an inverted U-shape.

6. The oil-gas homogenizer according to claim 1, characterized in that: A sealing ring is provided in the circumferential annular groove on the outer periphery of the upstream delivery pipe (10) and the distribution core (20).

7. The oil-gas homogenizer according to claim 3, characterized in that: The downstream end of the flow path (23) extends to the downstream end face of the columnar body (21).

8. The oil-gas homogenizer according to claim 1, characterized in that: The swirling channel is formed by swirling grooves (111a) or swirling ribs (111b) on the wall of the conical hole (11) to guide the swirling of oil and gas.

9. The oil-gas homogenizer according to claim 8, characterized in that: The swirling groove (111a) is arranged on the wall of the hole at the downstream end of the conical hole (11). The groove cavity of the swirling groove (111a) is connected to the groove cavity (211) surrounding the bottom of the cone (22) at the upstream end face of the columnar body (21) of the cone (22).

10. The oil-gas homogenizer according to claim 8, characterized in that: The side chamber of the swirling rib (111b) is connected to the groove (211) surrounding the bottom of the cone (22) at the upstream end face of the columnar body (21) of the cone (22).

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