CN216479596U

CN216479596U - Device for reducing noise and vibration of pipeline

Info

Publication number: CN216479596U
Application number: CN202220029404.3U
Authority: CN
Inventors: 王新刚; 王楠; 吴嘉澍
Original assignee: Tieling Bowang Valve Co ltd
Current assignee: Tieling Bowang Valve Co ltd
Priority date: 2022-01-07
Filing date: 2022-01-07
Publication date: 2022-05-10
Anticipated expiration: 2032-01-07

Abstract

The utility model discloses a reduce device of pipeline noise and vibration, including the honeycomb duct, flange is equipped with at the both ends of honeycomb duct, and the interval equipartition is equipped with many guide vanes along the axial trend of honeycomb duct on the inner wall of honeycomb duct, is equipped with automatic air valve through junction pipe on the honeycomb duct. Each guide vane is in a strip shape, and a deflection section deviating from the direction of the strip-shaped guide vane is formed at the front end of the strip-shaped guide vane; a maintenance valve is arranged between the short connecting pipe and the automatic air valve; and the connecting flange at the rear end of the flow guide pipe is connected with a vibration reduction joint. The utility model discloses the dress can further reduce the noise and the vibration of pipeline on the pipeline behind valve or the pump package.

Description

Device for reducing noise and vibration of pipeline

Technical Field

The utility model relates to a reduce device of pipeline noise and vibration.

Background

The reasons for the vibration and noise of the pipeline mainly include the following:

1. running water

When water flows in the pipeline, friction between water flow and the pipe wall, and vibration and noise generated by the change of the water flow section and the water flow direction.

2. Cavitation erosion

When the valve is opened and closed, the turbulent flow at the rear part of the valve interacts with a complex airflow field to generate a large amount of bubbles to influence the normal flow of fluid, and the cavitation of gas in the pipeline generates explosion sound to generate vibration and noise, so that the pipeline is damaged, even accidents occur to influence production.

3. Noise of pressure impact

Pressure surge noise is noise in the piping caused by excessive or rapid water flow rate opening and closing the valve and sudden closing of the backflow preventer. This noise is generated by the vibration of the pipe caused by water hammer. The impact noise is also generated by vibration of the components due to the effect of the streaming eddies and turbulence.

4. Operation of the pump unit

The parts are rotated to loosen the connecting bolt parts of the pipeline and each part of the pump (such as foundation bolts, machine body connecting bolts, flange connecting bolts, shaft coupling bolts, etc.).

The pipe wall is acoustically reflective, and only vibrations, noise generated by drag forces, can propagate along the pipe. When the pump is stopped and the water hammer impacts, the pipeline generates strong impact vibration and noise.

According to the reason that causes pipeline vibration and noise among the prior art, mainly take following measure to reduce pipeline vibration and noise:

if the water impact causes, the treatment is specified according to the pipeline water impact; if the flow velocity is too large, the flow of the pipeline is properly reduced; if the flow is unstable and fluctuates greatly, trying to keep the flow stable; if the pipeline support hanger is bad, repairing and reinforcing the support hanger; when the pipeline vibration is caused by the water hammer of the water pipeline, a valve of a water hammer generation pipe section can be closed or opened slowly; when the pipeline vibrates, the pipeline is ineffective after treatment and threatens the safe operation of equipment connected with the pipeline, and a large vibrating pipeline section is isolated; excessive parts such as elbows, different-diameter parts, control valves and the like are avoided as much as possible.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a device of reduction pipeline noise and vibration, the utility model discloses the noise and the vibration that can further reduce the pipeline of dress on the pipeline behind valve or the pump package.

In order to solve the technical problem, the utility model relates to a device of reduction pipeline noise and vibration, its characterized in that: the automatic air valve is characterized by comprising a flow guide pipe, wherein connecting flanges are arranged at two ends of the flow guide pipe, a plurality of flow guide blades moving along the axial direction of the flow guide pipe are uniformly arranged on the inner wall of the flow guide pipe at intervals, and the flow guide pipe is provided with an automatic air valve through a short connecting pipe.

As the utility model discloses an improvement, every guide vane's shape is rectangular shape, and rectangular shape guide vane's front end is formed with the baffling section of skew rectangular shape guide vane direction.

Further, the deflection section is offset from the elongated guide vane by an angle of 15 °.

Further, the front end of the deflecting segment is approximately triangular in shape.

As a further improvement of the utility model, a service valve is arranged between the junction pipe and the automatic air valve.

As the utility model discloses a further improvement, even there is the damping joint on the flange of honeycomb duct rear end.

The utility model relates to a device of reduction pipeline noise and vibration, the dress is on the pipeline of valve or pump package rear side when using. The utility model discloses be equipped with guide vane on the inner wall of well honeycomb duct, make turbulent flow fluid get into behind the honeycomb duct, carry out the rectification through guide vane, when the fluid flows through the honeycomb duct, the fluid upper reaches can be compelled to be shunted into the little rivers of a bundle of many, these little rivers become the vortex form and flow out, and be guided to the pipeline center, can avoid phenomenons such as cavitation erosion to take place the destruction that causes the pipeline like this, guide vane front end forms the baffling section that deviates certain angle, and baffling section front end is approximate to the shape of triangle-shaped, can further play the effect of stationary flow, automatic air valve can discharge the pipeline with the bubble rapidly, and after the pump stopping, the pipeline inside can produce the closure return water hammer, automatic air valve can replenish the air rapidly, prevents to explode the pipe or flat pipe phenomenon and take place; after the vibration damping joint is arranged in the utility model, the vibration and noise can be blocked or reduced and can be propagated backwards along the pipeline; after the maintenance valve is arranged between the short connecting pipe and the automatic air valve, the maintenance valve can be closed to carry out online maintenance on the air valve after the air valve fails.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic view of the structure of the device for reducing noise and vibration of the pipeline according to the present invention.

Fig. 2 is a schematic diagram of the right-side structure of fig. 1.

Fig. 3 is a rear view of the draft tube of fig. 1.

Fig. 4 is a schematic sectional view taken along line C-C in fig. 3.

Fig. 5 is a schematic sectional view taken along line D-D in fig. 3.

Fig. 6 is a schematic perspective view of the flow guide tube of the present invention.

Fig. 7 is a schematic front view of the middle guide vane of the present invention.

Fig. 8 is a schematic top view of the structure of fig. 7.

Detailed Description

Referring to fig. 1-8, the utility model relates to a device for reducing pipeline noise and vibration, its characterized in that: the guide pipe comprises a guide pipe 1, connecting flanges 2 are arranged at two ends of the guide pipe, a plurality of guide vanes 3 moving along the axial direction of the guide pipe are uniformly arranged on the inner wall of the guide pipe at intervals, and an automatic air valve 5 is arranged on the guide pipe through a short connecting pipe 4. Each guide vane 3 is in a strip shape, the front end of each strip-shaped guide vane is provided with a deflection section 31 deviating from the direction of the strip-shaped guide vane, and the deflection section at the front end of each guide vane deviates from the direction of the strip-shaped guide vane in the same direction. The deflection section 31 deviates from the elongated guide vane 3 by an angle of 15 °. The shape of the front end of the deflecting section 31 is approximately triangular. And a maintenance valve 6 is arranged between the short connecting pipe 4 and the automatic air valve 5. And the connecting flange 2 at the rear end of the draft tube 1 is connected with a vibration reduction joint 7.

Claims

1. The utility model provides a reduce device of pipeline noise and vibration which characterized in that: the guide pipe comprises a guide pipe (1), connecting flanges (2) are arranged at two ends of the guide pipe, a plurality of guide vanes (3) moving along the axial direction of the guide pipe are uniformly arranged on the inner wall of the guide pipe at intervals, and an automatic air valve (5) is arranged on the guide pipe through a short connecting pipe (4).

2. The apparatus for reducing noise and vibration in a pipe of claim 1, wherein: each guide vane (3) is in a strip shape, and a deflection section (31) deviating from the direction of the strip-shaped guide vane is formed at the front end of the strip-shaped guide vane.

3. The apparatus for reducing noise and vibration in a pipe of claim 2, wherein: the angle of the deflection section (31) deviating from the strip-shaped guide vane (3) is 15 degrees.

4. The apparatus for reducing noise and vibration in a pipe of claim 3, wherein: the shape of the front end of the baffling section (31) is approximately triangular.

5. The apparatus for reducing noise and vibration of a pipe according to any one of claims 1 to 4, wherein: and a maintenance valve (6) is arranged between the short connecting pipe (4) and the automatic air valve (5).

6. The apparatus for reducing noise and vibration in a pipe of claim 4, wherein: and a vibration reduction joint (7) is connected to the connecting flange (2) at the rear end of the flow guide pipe (1).