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CN-115435176-B - Diffusion type energy dissipater

CN115435176BCN 115435176 BCN115435176 BCN 115435176BCN-115435176-B

Abstract

The invention discloses a diffusion type energy dissipater which comprises a guide cover, an energy dissipater body and an energy dissipation net, wherein the energy dissipater body is in sealing connection with the inlet end of the guide cover, a plurality of spray holes which are communicated with the guide cover and the energy dissipater body are formed in the energy dissipater body, the energy dissipater body can store water flow and spray outwards through the spray holes to form high-speed spray flow, and the energy dissipation net is arranged in the guide cover and is used for receiving the spray flow from at least part of the spray holes. The energy dissipater body adopts the conical diffusion energy dissipation section and the plugging section, the conical diffusion energy dissipation section gradually reduces the overflow area of the water body, and can quickly form high-pressure liquid under the cooperation of the plugging section, so that high-speed jet flow is formed at the jet hole, and can be beaten onto the energy dissipation net and the guide cover, thereby achieving the energy dissipation effect.

Inventors

  • LI XIHONG
  • MA ZHIXIANG

Assignees

  • 武汉大禹阀门股份有限公司

Dates

Publication Date
20260512
Application Date
20220428

Claims (6)

  1. 1. A diffusion-type energy dissipater, comprising: A guide cover (2); The energy absorber body (1) is in sealing connection with the inlet end of the air guide sleeve (2), a plurality of spray holes (121) which are communicated with the air guide sleeve (2) and the energy absorber body (1) are formed in the energy absorber body (1), the energy absorber body (1) can block water flow and spray outwards through the spray holes (121) to form high-speed spray flow, the energy absorber body (1) comprises a connecting section (11), a diffusion energy dissipation section (12) and a blocking section (13) which are in sealing connection in sequence along the water flow direction, the diffusion energy dissipation section (12) is of a conical structure, the included angle between the conical surface and the water flow direction is an obtuse angle, and the spray holes (121) are formed in the conical surface of the diffusion energy dissipation section (12); The energy dissipation net (3) is arranged in the air guide sleeve (2) and is used for receiving jet flow from at least part of jet holes (121), the jet direction of the jet holes (121) coincides with the normal line perpendicular to the tangential plane of the jet holes (121), and at least 60% of the projection area of the jet holes (121) in the jet direction can be covered on the energy dissipation net (3); The air guide sleeve (2) comprises a first air guide section (21) and a second air guide section (22) which are sequentially connected in a sealing mode along the water flow direction, the inlet end of the first air guide section (21) is connected with the diffusion energy dissipation section (12) in a sealing mode, all spray holes (121) are covered in the air guide sleeve (2), and a plurality of through holes (211) communicated with the outside are formed in the first air guide section (21).
  2. 2. The diffusion-type energy absorber according to claim 1, wherein the total area of each through hole (211) is at least 1 time or more than the total area of each nozzle hole (121).
  3. 3. The diffusion-type energy dissipater as claimed in claim 1, wherein the first flow guiding section (21) has a conical structure, the conical surface of which forms an acute angle with the direction of water flow, and the conical surface of the diffusion-type energy dissipater (12) forms an angle of 90-120 degrees.
  4. 4. The diffusion-type energy dissipater as claimed in claim 1, wherein the energy dissipating net (3) has a conical structure with an obtuse angle with the direction of water flow.
  5. 5. The diffusion-type energy absorber according to claim 1, wherein the diameter of the outlet end of the guide cover (2) is 140-250% of the diameter of the inlet end of the energy absorber body (1).
  6. 6. The diffusion type energy dissipater of claim 1, wherein the central included angle of the diffusion energy dissipation section (12) is 40-90 degrees, the central included angle of the energy dissipation net (3) is 10-60 degrees, and the central included angle of the energy dissipation net (3) is smaller than the central included angle of the diffusion energy dissipation section (12).

Description

Diffusion type energy dissipater Technical Field The invention relates to the technical field of pipeline valves, in particular to a diffusion type energy dissipater. Background The energy dissipation of the pipeline is an important measure for ensuring the safety of the pipeline and a downstream building, and is paid attention to in recent years, so that a great deal of researches on a plurality of scholars are brought about, and the energy dissipation of the pipeline is applied to the aspects of hydraulic engineering and industrial and agricultural building engineering such as long-distance water pipeline systems, water supply and drainage pipeline systems of power stations and pump stations, agricultural irrigation pipeline water supply systems and the like. The pipeline energy dissipation has the advantages of low cost, no pollution to water quality, small occupied area or no occupied area and the like, so that the pipeline energy dissipation has wide application prospect. The pipeline energy dissipation device is a key component in the pipeline water delivery system, and the quality of the working state of the pipeline energy dissipation device directly influences the water delivery effect, the cost and the service life of the pipeline water delivery system, so that the research and development of the pipeline energy dissipation device has practical use value and practical value and is widely valued by research and development personnel. Especially, at the water diversion port and the pipeline end of the pressure water pipeline, the flow velocity is very high during normal outflow due to higher pressure, so that the device is extremely easy to cause larger destructive power to the outside, and the device use and safety requirements cannot be met. Therefore, it is desirable to provide an energy dissipating device for mounting at the end of a pipe to overcome the shock and cavitation hazards associated with the high flow rates at the outlet of the pipe. Disclosure of Invention Aiming at the defects existing in the prior art, the invention aims to provide a diffusion type energy absorber. The high-speed water flow at the pipeline outlet can play a role in dissipating energy, so that the safety is improved, and the use requirement is met. The device can be matched with a valve or used independently. In order to solve the technical problems, the invention is realized by the following technical scheme: a diffusion-type energy absorber, comprising: A guide cover; The energy absorber body is in sealing connection with the inlet end of the guide cover, a plurality of spray holes which are communicated with the guide cover and the energy absorber body are arranged on the energy absorber body, the energy absorber body can block water flow and spray outwards through the spray holes to form high-speed spray flow, and And the energy dissipation net is arranged in the air guide sleeve and is used for receiving jet flow from at least part of jet holes. Preferably, the energy dissipater body comprises a connecting section, a diffusion energy dissipation section and a plugging section which are sequentially and hermetically connected along the water flow direction, wherein the diffusion energy dissipation section is of a conical structure, the included angle between the conical surface of the diffusion energy dissipation section and the water flow direction is an obtuse angle, and the spray hole is arranged on the conical surface of the diffusion energy dissipation section. Preferably, the guide cover is provided with a plurality of through holes communicated with the outside. More preferably, the total area of each through hole is at least 1 time or more the total area of each nozzle hole. Further preferably, the air guide sleeve comprises a first air guide section and a second air guide section which are sequentially and hermetically connected along the water flow direction, the inlet end of the first air guide section is hermetically connected with the diffusion energy dissipation section, all spray holes are covered in the air guide sleeve, and the through holes are formed in the first air guide section. Still further preferably, the first guiding section is a conical structure, the included angle between the conical surface and the water flow direction is an acute angle, and the included angle between the conical surface and the conical surface of the diffusion energy dissipation section is 90-120 degrees. Preferably, the energy dissipation net is a cylindrical structure with a conical cross section, and an included angle between the energy dissipation net and the water flow direction is an obtuse angle. Preferably, the diameter of the outlet end of the guide cover is 140-250% of the diameter of the inlet end of the energy absorber body. Preferably, the injection direction of the injection hole coincides with the normal line perpendicular to the tangential plane of the injection hole, and at least 60% of the projec