公开(公告)号：WO2005001296A1

公开(公告)日：2005-01-06

申请号：PCT/US2004/019544

申请日：2004-06-17

Applicant: AIR SYSTEMS, INC. ,  ANGELICO, David, Frank

Inventor： ANGELICO, David, Frank

IPC: F15D1/04

CPC classification number: E03F5/08 ,  B65D90/34 ,  Y10T29/5313 ,  Y10T428/139

Abstract: An electrically conductive confined space ventilation conduit (31) formed of a substantially rigid non-metallic conductive material, such as plastic, and a related process for ventilating an enclosure accessed by a manhole or other port. In one embodiment, the conduit has a pair of outer cylindrical sections (22) and a central section (20) having a cross-sectional shape of a crescent or a segment of a circle where it passes through a port. Intermediate sections (21) of varying cross-section connect the central section to the cylindrical outer sections so that the outer sections are offset from the axis of the manhole. The central section (20) is preferably configured to obstruct no more than about 10 percent of a standard manhole opening, while causing either no air flow rate reduction, or a reduction of no more than about 10 percent as compared to the flow rate through a cylindrical conduit similar to said outer sections. The conduit is preferably formed of a conductive or electrically dissipative polyethylene ground. In a preferred embodiment, a connecting device for connecting the conduit to electrical ground is connected to the conduit. A grounding circuit kit and method of grounding the conduit is also disclosed.

Abstract translation: 由基本上刚性的非金属导电材料（例如塑料）形成的导电封闭空间通风导管（31）以及用于对由人孔或其他端口进入的外壳进行通风的相关过程。 在一个实施例中，导管具有一对外圆柱形部分（22）和中心部分（20），该中心部分具有新月形或圆形部分的横截面形状，其中它通过端口。 不同横截面的中间部分（21）将中心部分连接到圆柱形外部部分，使得外部部分从人孔的轴线偏移。 中心部分（20）优选地构造成阻止不超过约10％的标准人孔开口，同时不产生空气流速减小，或者与通过a的流速相比减少不超过约10％ 类似于所述外部部分的圆柱形导管。 导管优选由导电或电耗散聚乙烯接地形成。 在优选实施例中，用于将导管连接到电接地的连接装置连接到导管。 还公开了接地电路套件和接地导管的方法。