Pipeline elbow with fluid impact damping function

Abstract

According to the pipeline elbow with the fluid impact damping function, a damping device is fixed in the arc-shaped pipeline elbow, the damping device is transversely arranged in the pipeline elbow, and the damping device is parallel to the cross section of the current pipeline elbow. The damping device comprises a central shaft, a damping plate and springs, the center of the damping plate is a cylindrical hollow sleeve, damping turning plates are arranged on two sides of the sleeve and can turn up and down relative to the sleeve, two ends of the central shaft are sleeved with the springs after the central shaft penetrates through the sleeve, two ends of the central shaft are welded with the inner wall of the pipeline elbow, and long-strip-shaped turbulence holes are formed in the damping turning plates. The damping device in the elbow can convert impact linear kinetic energy into rotation kinetic energy and reduce impact of reverse impact force on the elbow wall. In addition, turbulent flow holes in the damping turning plate can reduce the flow speed of fluid. And compared with the traditional elbow, the elbow has the characteristic of impact resistance under the same material and process.

Description

Technical Field

[0001] The invention belongs to the technical field of petroleum exploitation, and in particular relates to a pipeline elbow with a fluid impact damping function. Background Art

[0002] Oil is the main energy source that humans have long relied on for survival. Pipelines are needed as a means of transportation during its extraction, processing and transmission. Considering factors such as space and economy, a large number of elbows are often configured in pipelines. The reason is that the characteristics of elbows can change the direction of fluid transmission, make equipment and pipelines closely connected, save space, and avoid specific structures.

[0003] While elbows have the above functions and advantages, they are also accompanied by the following disadvantages:

[0004] In an elbow piping system, under abnormal operating conditions, in order to prevent system leakage, the valve downstream of the elbow is suddenly closed, and the fluid that hits the valve core will impact the elbow in the opposite direction, resulting in excessive instantaneous impact force, which will damage the elbow and even the entire system. Utility Model Content

[0005] In order to solve the above problems, the present invention provides a pipeline elbow with fluid impact damping function, which aims to avoid the reverse flow of fluid from impacting the upstream fluid and generating instantaneous high-pressure impact at the turning elbow. The technical solution adopted is:

[0006] A pipeline elbow with a fluid impact damping function, wherein a damping device is fixed inside the arc-shaped pipeline elbow, the damping device is transversely arranged inside the pipeline elbow, and the damping device is parallel to the cross section of the current pipeline elbow.

[0007] The damping device includes a central shaft, a damping plate and a spring. The center of the damping plate is a cylindrical hollow sleeve. Damping flaps are arranged on both sides of the sleeve. The damping flaps can be flipped up and down relative to the sleeve. After the central shaft passes through the sleeve, springs are arranged at both ends. The two ends of the central shaft are welded to the inner wall of the pipe elbow, and long turbulent holes are opened on the damping flap.

[0008] The above-mentioned pipe elbow with fluid impact damping function, further, has a damping flap width on one side of the sleeve that is greater than that on the other side, and the width of the damping flap with a larger width gradually decreases from one end to the other end.

[0009] The above-mentioned pipe elbow with fluid impact damping function further has two turbulence holes arranged on each side of the damping flap.

[0010] The above-mentioned pipeline elbow with fluid impact damping function further has a damping device fixed at both ends and the center of the pipeline elbow.

[0011] The above-mentioned pipe elbow with fluid impact damping function, further, the three damping devices are installed in the same direction, and the extension lines of one end of the three damping devices converge at the arc center of the pipe elbow.

[0012] In the present invention, when the downstream valve of the fluid is suddenly closed due to a fault or a logical relationship, the fluid will flow in the opposite direction, and the reverse-flowing fluid will collide with the upstream fluid, generating an instantaneous high-pressure impact at the turning elbow. The damping device inside the present invention can convert the impact linear kinetic energy into rotational kinetic energy and reduce the impact of the reverse impact force on the elbow wall. In addition, the turbulent holes on the damping flap can also reduce the fluid flow rate. Under the same material and process, it has the characteristics of impact resistance compared to traditional elbows. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0014] Figure 2 It is a perspective structural schematic diagram of the present invention;

[0015] Figure 3 is a schematic diagram of the main structure of the damping device;

[0016] Figure 4 is a schematic diagram of the damping plate structure;

[0017] Figure 5 is a schematic diagram of the side structure of the damping plate;

[0018] Figure 6 It is the intention of the downstream valve to suddenly close the ordinary elbow force;

[0019] Figure 7 It is the force intention of the present invention that the downstream valve is suddenly closed;

[0020] Among them: 1-pipe elbow, 2-damping plate, 2.1-sleeve, 2.2-damping flap, 2.4-turbulence hole, 3-center axis, 4-spring. DETAILED DESCRIPTION

[0021] The present invention will be further described in conjunction with the accompanying drawings.

[0022] like Figures 1 to 5 As shown, a pipe elbow with fluid impact damping function has a damping device fixed at both ends and the center of the pipe elbow, and the damping device consists of a central shaft 3, a damping plate 2, and a spring 4. The center of the damping plate is a cylindrical hollow sleeve 2.1, and damping flaps 2.2 are arranged on both sides of the sleeve. The damping flap can be flipped up and down relative to the sleeve. After the central shaft passes through the sleeve, springs 4 are sleeved at both ends. The two ends of the central shaft are welded to the inner wall of the pipe elbow, and a long turbulent hole 2.4 is opened on the damping flap.

[0023] The two ends of the damping plate are positioned by springs sleeved on both sides of the central axis to prevent the damping plate from rigidly colliding with the elbow in the left and right directions when impacted by high-speed fluid. The two ends of the central axis are fixed to the outer wall of the elbow by welding.

[0024] like Figure 6 The figure shows the force of a common elbow when the downstream valve is suddenly closed. The arrow shows the direction of fluid flow. When the downstream valve (left end) is suddenly closed due to a fault, the fluid quickly impacts the valve core, causing the fluid to flow back and instantly impact the opposite fluid, causing a huge impact on the outer wall of the elbow, which may cause leakage.

[0025] like Figure 7 The figure shows the force intention of the invention when the downstream valve is suddenly closed. The straight arrow shows the flow direction of the fluid. When the downstream valve (left end) is suddenly closed due to a fault, the fluid quickly impacts the valve core, causing the fluid to flow back. Figure 6 The fluid directly impacts the pipe wall of the pipe elbow. The present invention converts the linear kinetic energy of the fluid into rotational kinetic energy through the damping plate. The conversion relationship can be seen from the rotation arrow on the outside of the pipe elbow and the straight arrow on the inside of the pipe elbow. The size of the arrow represents the energy attenuation process. A plurality of damping plates 2 are arranged on the inside of the pipe elbow. As the fluid passes through the plurality of damping plates 2, coupled with the impact of the upstream fluid, the energy gradually weakens, thereby preventing the fluid from directly causing high-energy impact on the outer wall 1 of the elbow. In addition, the turbulent holes 2.4 can also reduce the fluid flow rate.

[0026] The advantage of the present invention is that when the downstream valve of the fluid is suddenly closed due to a fault or a logical relationship, the fluid will flow in the opposite direction, and the reverse-flowing fluid will collide with the upstream fluid, generating an instantaneous high-pressure impact at the turning elbow. The damping mechanism inside the present invention can convert the impact linear kinetic energy into rotational kinetic energy and reduce the impact of the reverse impact force on the elbow wall. In addition, the turbulent holes on the damping flap can also reduce the fluid flow rate. Under the same material and process, it has the characteristics of impact resistance compared to traditional elbows.

Claims

1. A pipe elbow with fluid impact damping function, characterized in that: A damping device is fixed inside the arc-shaped pipeline elbow (1), and the damping device is transversely arranged inside the pipeline elbow, and the damping device is parallel to the cross section of the current pipeline elbow; The damping device comprises a central shaft (3), a damping plate (2) and a spring (4); the center of the damping plate is a cylindrical hollow sleeve (2.1); damping flaps (2.2) are arranged on both sides of the sleeve; the damping flaps can be turned up and down relative to the sleeve; after the central shaft passes through the sleeve, springs are sleeved at both ends; the two ends of the central shaft are welded to the inner wall of the pipe elbow; and the damping flaps are provided with long strip turbulence holes (2.4).

2. The pipeline elbow with fluid impact damping function according to claim 1, characterized in that: The width of the damping flap on one side of the sleeve is greater than that of the damping flap on the other side, and the width of the damping flap with a larger width gradually decreases from one end to the other end.

3. The pipeline elbow with fluid impact damping function according to claim 1, characterized in that: Two turbulence holes are arranged on each side of the damping flap.

4. The pipeline elbow with fluid impact damping function according to claim 1, characterized in that: A damping device is fixed at both ends and the center of the pipe elbow.

5. The pipeline elbow with fluid impact damping function according to claim 1, characterized in that: The installation directions of the three damping devices are consistent, and the extension lines of one ends of the three damping devices converge at the arc center of the pipe elbow.

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