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CN-120576836-B - Pipeline noise reduction rectifying device and pipeline flow metering system

CN120576836BCN 120576836 BCN120576836 BCN 120576836BCN-120576836-B

Abstract

The invention relates to the technical field of pipeline flow metering equipment and discloses a pipeline noise reduction rectifying device and a pipeline flow metering system, wherein the pipeline noise reduction rectifying device comprises a shell, a flow inlet and a flow stabilizing and noise reducing part, wherein the front end of the shell is provided with an air inlet, the rear end of the shell is provided with an air outlet, the flow stabilizing and noise reducing part comprises a diameter expanding part and a flow stabilizing and noise reducing part which are sequentially arranged from front to back, the inner diameter of the diameter expanding part is gradually increased from the air inlet to the downstream, and the inner diameter of the flow stabilizing and noise reducing part is larger than the inner diameter of the air inlet; the flow stabilizing ball is fixedly arranged on the flow stabilizing noise reducing part and is positioned at the rear side of the front flow stabilizing net, and the rear end of the flow stabilizing ball is opposite to the air outlet. The pipeline noise reduction rectifying device can carry out noise reduction rectifying treatment on air flow in a pipeline, a stable measuring environment is created for an ultrasonic flowmeter on the pipeline, and the metering accuracy of flow is indirectly improved.

Inventors

  • Guo Muyuan
  • LIU KANG
  • XUE TINGTING
  • Kan Zaisheng
  • MA WENTAO

Assignees

  • 山东思达特测控设备有限公司
  • 新加坡维德雷科技服务有限公司

Dates

Publication Date
20260508
Application Date
20250805

Claims (6)

  1. 1. A noise reduction and rectification device for a pipeline, comprising: The device comprises a shell, a flow stabilizing and noise reducing part, a shell and a flow arranging part, wherein the front end of the shell is provided with an air inlet, the rear end of the shell is provided with an air outlet, the shell comprises a diameter expanding part and a flow stabilizing and noise reducing part which are sequentially arranged from front to back, the inner diameter of the diameter expanding part gradually increases from the air inlet to the downstream, and the inner diameter of the flow stabilizing and noise reducing part is larger than the inner diameter of the air inlet; The front rectifying net is arranged on one side of the steady flow noise reduction part, which is close to the air inlet, a steady flow nest is arranged at the position of the front rectifying net, which is opposite to the air inlet, the periphery of the steady flow nest is provided with a fire-retardant net, wherein the steady flow nest comprises a plurality of side-by-side pipe bodies, one end of the steady flow nest, which is close to the air inlet, is provided with a concave cambered surface, and one end of the steady flow nest, which is far away from the air inlet, is closed; The steady flow ball is fixedly arranged on the steady flow noise reduction part and is positioned at the rear side of the front rectifying net, and the rear end of the steady flow ball is opposite to the air outlet; The rear rectifying net is arranged at the airflow arranging part and is of a net structure; the steady flow tube bundles are arranged at the downstream of the rear rectifying net and are a plurality of tube bodies filled in the airflow finishing part, and the tube bodies are arranged along the length direction of the airflow finishing part; The flow stabilizing ball is provided with a gap with the front rectifying net, the air flow can form a middle air flow vortex, and the air flow forms a rear air flow vortex among the periphery of the flow stabilizing ball, the rear end of the flow stabilizing noise reduction part and the cylinder.
  2. 2. The conduit noise reducing and rectifying device according to claim 1, wherein, The front rectifying net further comprises a fixing seat arranged between the steady flow nest and the fire-retarding net, and the front end of the steady flow ball is connected to the fixing seat.
  3. 3. The conduit noise reducing and rectifying device according to claim 1, wherein, The diameter of the steady flow nest is 0.85-1.15 times of the inner diameter of the air inlet.
  4. 4. The conduit noise reducing and rectifying device according to claim 1, wherein, The diameter of the rear end of the steady flow noise reduction part is gradually reduced and is connected with the periphery of the airflow tidying part.
  5. 5. The pipeline noise reduction fairing of any of claims 1-4, The diameter of the steady flow ball is 1-1.5 times of the inner diameter of the air inlet.
  6. 6. A conduit flow metering system, comprising: An ultrasonic flowmeter; The conduit noise reducing fairing of any of claims 1 to 5, provided a predetermined distance upstream of a conduit in which the ultrasonic flow meter is located.

Description

Pipeline noise reduction rectifying device and pipeline flow metering system Technical Field The invention relates to the technical field of pipeline flow metering equipment, in particular to a pipeline noise reduction rectifying device and a pipeline flow metering system. Background In the long-distance transmission process, the air flow is easy to be unstable due to the influence of the relief of the topography and the pipe diameter change of the pipeline and the pipe fittings such as valves, elbows, tees and the like along the way. During the delivery of natural gas, the pressure and flow may fluctuate as the user's demand changes and as the piping system operates. Such pressure and flow variations can lead to instability of the gas flow, which can present difficulties in metering. The partial rectifying device has unsatisfactory rectifying effect, and it is difficult to fully integrate the air flow and the like into a uniform and stable state. If an ultrasonic flowmeter adopting a common rectifying plate is adopted, the rotation and irregular movement of the airflow can not be completely eliminated, and the signal acquisition and measurement accuracy are affected. Disclosure of Invention The invention is made to solve the above technical problems, and one of its objects is to provide a noise-reducing and rectifying device for a pipeline, which can reduce noise and rectify airflow in the pipeline, create a stable measuring environment for an ultrasonic flowmeter on the pipeline, and indirectly improve the flow metering accuracy. Another object of the present invention is to provide a pipe flow rate measurement system capable of accurately measuring the flow rate of gas in a pipe. According to one embodiment of the invention, the pipeline noise reduction rectifying device comprises a shell, wherein the front end of the shell is provided with an air inlet, the rear end of the shell is provided with an air outlet, the pipeline noise reduction rectifying device comprises a diameter expansion part and a steady flow noise reduction part which are sequentially arranged from front to back, the inner diameter of the diameter expansion part gradually increases from the air inlet to the downstream, the inner diameter of the steady flow noise reduction part is larger than that of the air inlet, a front rectifying net is arranged on one side, close to the air inlet, of the steady flow noise reduction part, and a steady flow ball is fixedly arranged on the rear side of the steady flow noise reduction part and is positioned on the rear side of the front rectifying net, and the rear end of the steady flow ball is opposite to the air outlet. As one implementation mode, a steady flow nest is arranged at the position of the front rectifying net, which is opposite to the air inlet, and the periphery of the steady flow nest is provided with a fire-retardant net, wherein the steady flow nest comprises a plurality of side-by-side pipe bodies, one end of the steady flow nest, which is close to the air inlet, is provided with an inward concave cambered surface, and one end of the steady flow nest, which is far away from the air inlet, is closed. As an implementation mode, the front rectifying net further comprises a fixing seat arranged between the steady flow nest and the fire-resisting net, and the front end of the steady flow ball is connected to the fixing seat. As one embodiment, the diameter of the flow stabilizing nest is 0.85-1.15 times of the inner diameter of the air inlet. As one embodiment, the shell further comprises an airflow finishing part arranged at the downstream of the steady flow noise reduction part, wherein one end of the airflow finishing part is communicated with the air outlet, the other end of the airflow finishing part extends to a cylinder in the steady flow noise reduction part, and the inner diameter of the cylinder is smaller than the inner diameter of the steady flow noise reduction part. As one implementation mode, the pipeline noise reduction rectifying device further comprises a rear rectifying net and a steady flow tube bundle, wherein the rear rectifying net is arranged at the airflow arranging part and is of a net-shaped structure, and the steady flow tube bundle is arranged at the downstream of the rear rectifying net and is a plurality of tube bodies filled in the airflow arranging part, and the tube bodies are arranged along the length direction of the airflow arranging part. As an embodiment, a preset distance is arranged between the rear rectifying net and the steady flow tube bundle. As one embodiment, the rear end of the steady flow noise reduction part is gradually reduced in diameter and connected to the outer periphery of the airflow finishing part. As one embodiment, the diameter of the steady flow ball is 1-1.5 times of the inner diameter of the air inlet. According to one embodiment of the invention, a pipeline flow metering system is provided, which comprises an ultrasonic flo