Arrangement structure for preventing vibration of gas-liquid two-phase flow pipeline behind pressure reducing valve

Abstract

The utility model provides an arrangement structure for preventing vibration of a gas-liquid two-phase flow pipeline behind a pressure reducing valve, which comprises a pipeline, the pressure reducing valve is arranged on the pipeline, the pipeline is divided into a plurality of buried pipe sections and a plurality of exposed pipe sections, the buried pipe sections are pre-buried in concrete, the pressure reducing valve is arranged at the exposed pipe sections, and anchor blocks are respectively arranged on two sides of the pressure reducing valve. The exposed pipe section penetrates through the anchor block and is fixedly connected with the anchor block, the side, away from the pressure reducing valve, of the pipeline forms a Z-shaped bend, the exposed pipe section is further connected with a pipe clamp, the exposed pipe section is fixed to the peripheral concrete on one side through the pipe clamp, the pipeline is divided into the buried pipe section and the exposed pipe section, and the buried pipe section is pre-buried in the concrete and is basically not affected by vibration of the pipeline; the anchor blocks are arranged on the two sides of the pressure reducing valve and used for fixing the exposed pipe section, the exposed pipe section is fixed to the peripheral concrete on one side through the pipe clamp, the exposed pipe section of the pipeline is supported, pipeline vibration is effectively reduced, pipeline drifting is prevented, stress concentration is relieved, pipeline protection is provided, the stability and reliability of the system are improved, and the service life of the pipeline is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline layout safety, in particular to an arrangement structure for preventing vibration of a gas-liquid two-phase flow pipeline behind a pressure reducing valve. Background Art

[0002] In order to control the pressure in a pipeline, a pressure reducing valve is often installed on the pipeline. A pressure reducing valve is a valve that reduces the inlet pressure to a required outlet pressure through adjustment and relies on the energy of the medium itself to automatically maintain the stability of the outlet pressure. The sudden pressure drop formed behind the pressure reducing valve will cause the vaporization of the liquid, turning part of the liquid into gas, thus forming a gas-liquid two-phase flow. When the gas-liquid two-phase flow flows in the pipeline, bubbles or droplets will cause fluid instability, resulting in pipeline vibration and noise. These vibrations and noises may cause mechanical stress and fatigue to the pipeline and nearby equipment, posing hazards to the pipeline equipment. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and provide an arrangement structure for preventing vibration of a gas-liquid two-phase flow pipeline behind a pressure reducing valve, which can solve the problem that the vibration of the pipeline behind the pressure reducing valve may cause mechanical stress and fatigue to the pipeline and nearby equipment.

[0004] To this end, the utility model adopts the following technical solutions:

[0005] An arrangement structure for preventing vibration of a gas-liquid two-phase flow pipeline behind a pressure reducing valve, including a pipeline, a pressure reducing valve is arranged on the pipeline, the pipeline is divided into several buried pipe sections and several exposed pipe sections, the buried pipe sections are pre-embedded in concrete, the pressure reducing valve is arranged at the exposed pipe section, piers are respectively arranged on both sides of the pressure reducing valve, the exposed pipe section passes through the piers and is fixedly connected with the piers, the pipeline forms a Z-shaped bend on the side of the pier away from the pressure reducing valve, a pipe clamp is also connected to the exposed pipe section, and the exposed pipe section is fixed on the surrounding concrete on one side through the pipe clamp.

[0006] On the basis of adopting the above technical solutions, the utility model can also adopt the following further technical solutions, or use a combination of these further technical solutions:

[0007] The pipe clamp includes two symmetrically arranged connecting pieces, the middle parts of the two connecting pieces are arc-shaped and match the size of the exposed pipe section, connecting wings are also arranged on both sides of the connecting piece, and the connecting wings of the two connecting pieces are connected by screws, so as to fix the exposed pipe section between the two connecting pieces.

[0008] A washer is also arranged between the pipe clamp and the exposed pipe section.

[0009] One side of the pipe clamp is fixed with an extension pipe, and the end of the extension pipe is fixed with a connecting plate, which is fixed to the surrounding concrete by expansion bolts.

[0010] The extension pipe is a round steel pipe, and the connecting plate is a steel plate.

[0011] The connecting plate is provided with a number of reserved holes for connecting the expansion bolts.

[0012] Compared with the prior art, the utility model has the following advantages and beneficial effects: by dividing the pipeline into a buried pipe section and an exposed pipe section, the buried pipe section is pre-embedded in the concrete and is basically not affected by pipeline vibration. Anchor blocks are arranged on both sides of the pressure reducing valve to fix the exposed pipe section, and the exposed pipe section of the pipeline is fixed to the surrounding concrete on one side through a pipe clamp, so that the exposed pipe section of the pipeline is supported, effectively reducing pipeline vibration, preventing pipeline drift, alleviating stress concentration and providing pipeline protection, improving the stability and reliability of the system, and prolonging the service life of the pipeline. Description of the Drawings

[0013] Figure 1 It is a schematic diagram of the layout structure for preventing vibration of the gas-liquid two-phase flow pipeline behind the pressure reducing valve of the utility model.

[0014] Figure 2 It is a schematic diagram of the pipe clamp structure of the utility model.

[0015] Figure 3 It is a schematic diagram of the hole position distribution of the reserved holes on the connecting plate of the utility model. Detailed Embodiment

[0016] In order to enable those skilled in the art to better understand the technical solution of the utility model, the preferred implementation scheme of the utility model will be described below in conjunction with specific embodiments. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar functional elements throughout. However, it should be understood that the drawings are only for illustrative purposes and cannot be construed as a limitation to the utility model; for better illustration of this embodiment, some components in the drawings will be omitted, enlarged or reduced, and do not represent the actual size of the product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted, and the positional relationships described in the drawings are only for illustrative purposes and cannot be construed as a limitation to the utility model.

[0017] The following further describes the utility model in conjunction with the drawings and embodiments, but it shall not be used as a basis for limiting the utility model.

[0018] An arrangement structure for preventing vibration of the gas-liquid two-phase flow pipeline behind a pressure reducing valve provided by the utility model includes a pipeline 4, on which a pressure reducing valve 2 is arranged. The pipeline 4 is divided into several buried pipe sections 41 and several exposed pipe sections 42. The buried pipe sections 41 are pre-buried in concrete 6, and the pressure reducing valve 2 is arranged at the exposed pipe section 42. Anchor blocks 1 are respectively arranged on both sides of the pressure reducing valve 2. The exposed pipe section 42 passes through the anchor block 1 and is fixedly connected to the anchor block 1. The pipeline 4 forms a Z-shaped bend on the side of the anchor block 1 away from the pressure reducing valve 2. A pipe clamp 3 is also connected to the exposed pipe section 42, and the exposed pipe section 42 is fixed to the surrounding concrete on one side through the pipe clamp 3.

[0019] In this embodiment, the buried pipe section 41 is buried in the concrete, which can provide fixed and stable support for the pipeline 4. The concrete has a solid structure and good load-bearing capacity, which can prevent the pipeline 4 from sinking, moving or deforming during use, and ensure the stability of the position and layout of the pipeline 4. It can fix and stabilize the pipeline, protect the pipeline, evenly disperse the load and provide rigid support. These functions help to ensure the safe and reliable operation of the pipeline and extend its service life.

[0020] In this embodiment, the anchor blocks 1 are arranged on both sides of the pressure reducing valve 2, and the pipeline 4 forms a Z-shaped bend on the side of the anchor block 1 away from the pressure reducing valve 2. Since the flow direction of the fluid changes at the turning point of the pipeline 4, resulting in changes in flow velocity and pressure loss, this pressure change and flow velocity change may cause an increase in the shear force of the fluid and unstable flow, thus making the pipeline unstable. At the turning point of the pipeline, the curvature of the fluid flow will cause solid particles or corrosive substances in the fluid to be more likely to deposit or generate friction on the pipeline surface. Therefore, the anchor blocks 1 are provided to provide additional structural support, increase the stiffness and stability of the system, prevent the pipeline from deforming, displacing or vibrating, thus ensuring the safe operation and reliability of the pipeline system, and at the same time preventing vibration of the gas-liquid two-phase flow pipeline behind the pressure reducing valve; the upward bending of the pipeline 4 behind the pressure reducing valve also helps to quickly disperse and release the excess pressure, thereby reducing vibration and impact in the system.

[0021] In this embodiment, the pipe clamp 3 is made of Q235 flat steel. After the pipe clamp 3 is fixed, it needs to be treated with two coats of antirust primer and two coats of aluminum powder paint for corrosion prevention. The installation of the pipe clamp 3 can support the weight of the pipeline, reduce the deflection and deformation of the pipeline, maintain the stability and perpendicularity of the pipeline, reduce vibration and impact, prevent the pipeline from drifting, relieve stress concentration and provide pipeline protection;

[0022] The sudden pressure drop formed after the pressure reducing valve can cause the liquid to vaporize, turning part of the liquid into gas, thus forming a gas-liquid two-phase flow. When the gas-liquid two-phase flow flows in the pipeline, bubbles or droplets may cause fluid instability, resulting in pipeline vibration and noise generation. Therefore, the installation of the pipe clamp 3 can reduce the free vibration of the pipeline, suppress vibration and reduce noise generation; these functions help to maintain the stability, safety and operating efficiency of the pipeline system.

[0023] The pipe clamp 3 includes two connecting pieces 31 symmetrically arranged. The middle parts of the two connecting pieces 31 are arc-shaped and match the size of the exposed pipe section 42. Connecting wings 32 are also provided on both sides of the connecting piece 31. By screwing the connecting wings 32 of the two connecting pieces 31 together, the exposed pipe section 42 is fixed between the two connecting pieces 31.

[0024] A washer 5 is also provided between the pipe clamp 3 and the exposed pipe section 42.

[0025] In this embodiment, the washer 5 is a rubber washer. The rubber washer can fill the gap between the pipe clamp and the pipeline, forming a sealing layer to prevent the leakage or penetration of liquid, gas or solid particles from the connection of the pipe clamp. It can absorb and relieve these forces, reducing the impact and damage to the pipeline and its supporting structure.

[0026] An extension pipe 7 is fixed on one side of the pipe clamp 3. A connecting plate 8 is fixed at the end of the extension pipe 7. The connecting plate 8 is fixed to the surrounding concrete by expansion screws 9.

[0027] In this embodiment, the extension pipe 7 is welded to the pipe clamp 3 and the connecting plate 8 respectively.

[0028] The extension pipe 7 is a round steel pipe, and the connecting plate 8 is a steel plate.

[0029] A number of reserved holes 81 for connecting the expansion screws 9 are provided on the connecting plate 8.

[0030] In this embodiment, four symmetrically and evenly distributed reserved holes 81 are provided on the connecting plate 8.

[0031] It should be noted that the terms "including" and "having" and any variations thereof in the description, claims and above-mentioned drawings of the present utility model are intended to cover non-exclusive inclusion. The terms "installed", "set", "provided with", "connected", "connected to", "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is internal communication between two mechanisms, components or parts. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "one end", "the other end", "outer side", "inner side", "horizontal", "end portion", "length", "outer end", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the indicated mechanism or element must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present utility model. The terms "first" and "second" are also used only for the sake of brevity in description, and do not indicate or imply relative importance.

[0033] In addition, when practicing the claims of the present utility model, those skilled in the art can understand and affect the variations of the disclosed embodiments through the study of the drawings, the disclosure and the appended claims. In addition, in the claims and the specification, words such as "comprising", "containing", etc. do not exclude other elements or steps, and non-plural nouns do not exclude their plural forms.

[0034] The above are only the preferred embodiments of the present utility model, and are not used to limit the scope of implementation of the present utility model. That is, all equivalent changes and modifications made in accordance with the present utility model are covered by the scope of the claims of the present utility model, and no further examples are given here.

Claims

1. An arrangement structure for preventing vibration of a gas-liquid two-phase flow pipeline after a pressure reducing valve, comprising a pipeline (4), wherein a pressure reducing valve (2) is arranged on the pipeline (4), and is characterized in that, The pipeline (4) is divided into a number of buried pipe sections (41) and a number of exposed pipe sections (42). The buried pipe sections (41) are pre-buried in the concrete (6). The pressure reducing valve (2) is arranged at the exposed pipe section (42). Anchor blocks (1) are respectively arranged on both sides of the pressure reducing valve (2). The exposed pipe section (42) passes through the anchor block (1) and is fixedly connected to the anchor block (1). The pipeline (4) forms a Z-shaped bend on the side of the anchor block (1) away from the pressure reducing valve (2). A pipe clamp (3) is also connected to the exposed pipe section (42). The exposed pipe section (42) is fixed to the surrounding concrete on one side through the pipe clamp (3).

2. The layout structure for preventing vibration of the gas-liquid two-phase flow pipeline behind the pressure reducing valve according to claim 1, characterized in that, The pipe clamp (3) includes two symmetrically arranged connecting plates (31). The middle parts of the two connecting plates (31) are arc-shaped and match the size of the exposed pipe section (42). Connecting wings (32) are also provided on both sides of the connecting plate (31). The connecting wings (32) of the two connecting plates (31) are connected by screws, so as to fix the exposed pipe section (42) between the two connecting plates (31).

3. The layout structure for preventing the vibration of the gas-liquid two-phase flow pipeline behind the pressure reducing valve as described in claim 1, characterized in that A washer (5) is also arranged between the pipe clamp (3) and the exposed pipe section (42).

4. A layout structure for preventing vibration of a gas-liquid two-phase flow pipeline after a pressure reducing valve according to claim 1, characterized in that An extension pipe (7) is fixed to one side of the pipe clamp (3). A connecting plate (8) is fixed to the end of the extension pipe (7). The connecting plate (8) is fixed to the surrounding concrete through expansion screws (9).

5. The layout structure for preventing vibration of the gas-liquid two-phase flow pipeline behind the pressure reducing valve according to claim 4, characterized in that, The extension pipe (7) is a round steel pipe, and the connecting plate (8) is a steel plate.

6. The layout structure for preventing vibration of the gas-liquid two-phase flow pipeline behind the pressure reducing valve according to claim 4, characterized in that, A number of reserved holes (81) for connecting the expansion screws (9) are provided on the connecting plate (8).

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