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an underground ventilation system

An underground ventilation and air duct technology, applied in ventilation systems, heating and ventilation control systems, heating and ventilation safety systems, etc., can solve problems such as inability to achieve precise air volume distribution, adjustment failures, and difficult maintenance

Active Publication Date: 2020-10-27
中国人民解放军火箭军工程设计研究院
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large number of branch air ducts or air outlets, ordinary air valves cannot accurately distribute the air volume of each air outlet, and the air valves are installed underground, which is not easy to overhaul. Real-time grasp of the air volume mismatch situation, the entire underground air duct system cannot achieve the design purpose of precise air volume distribution

Method used

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Embodiment Construction

[0037] The present invention is described below based on the embodiments, and those skilled in the art should understand that the drawings provided here are for the purpose of illustration, and the drawings are not necessarily drawn to scale.

[0038] Unless the context clearly requires, throughout the specification and claims, "comprises", "comprises" and similar words should be interpreted in an inclusive sense rather than an exclusive or exhaustive meaning; that is, "including but not limited to" meaning.

[0039] Aiming at the problem that the air valves in the existing underground ventilation system are easy to fail, which leads to the mismatch of air volume, and the maintenance personnel cannot grasp the mismatch of air volume in real time, this application provides an underground ventilation system, which includes a main air duct and multiple branch air ducts , a first-stage throttling orifice structure 1, a first-stage differential pressure detection device 2, a second...

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Abstract

The invention discloses an underground ventilation system which comprises a main air duct, a plurality of branch air ducts, first-stage throttling orifice plate structures, first-stage differential pressure detection devices, second-stage throttling orifice plate structures and second-stage differential pressure detection devices. Each branch air duct is provided with a plurality of air openings;the first-stage throttling orifice plate structures are arranged between the main air duct and the branch air ducts, and each first-stage throttling orifice plate structure is provided with at least one first-stage throttling orifice; the first-stage differential pressure detection devices are used for detecting the differential pressure of the front sides and the rear sides of first-stage throttling orifice plates; the second-stage throttling orifice plate structures are arranged between the air ports and the branch air ducts where the air ports are located, and each second-stage throttling orifice plate structure is provided with at least one second-stage throttling orifice; and the second-stage differential pressure detection devices are used for detecting the differential pressure of the front sides and the rear sides of second-stage throttling orifice plates. The throttling orifice plate structures are easy to machine, low in cost, easy and convenient to install, free of quick-wear parts, reliable and durable in structure and long in service life, the airflow distribution accuracy can be guaranteed, and air volume distribution in the underground ventilation system can be monitored in real time.

Description

technical field [0001] The invention relates to the technical field of ventilation, in particular to an underground ventilation system. Background technique [0002] Due to the saving of building space or other special requirements in some projects, it is necessary to set the air duct underground, and install air outlets on the branch air ducts, so as to achieve the purpose of downward air supply or downward exhaust. Due to the large number of branch air ducts or air outlets, ordinary air valves cannot accurately distribute the air volume of each air outlet, and the air valves are installed underground, which is not easy to overhaul. Real-time grasp of air volume mismatch, the entire underground air duct system cannot achieve the design purpose of precise air volume distribution. Contents of the invention [0003] In view of this, the purpose of the present invention is to provide an underground ventilation system with reliable structure, precise air volume distribution a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F7/08F24F3/14F24F13/02F24F11/62F24F11/74F24F11/89F24F13/10F24F110/40F24F110/20
CPCF24F3/14F24F7/08F24F11/62F24F11/74F24F11/89F24F13/0236F24F13/10F24F2110/20F24F2110/40
Inventor 苏辉张金城谭可可涂江峰孔佳
Owner 中国人民解放军火箭军工程设计研究院
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