Subway tunnel air valve with high-temperature resistance, high strength, low leakage and low flow resistance

A high-strength, low-leakage technology, used in valve lift, heat preservation, valve details, etc., can solve problems such as not fully meeting requirements, and achieve the effect of improving rigidity and strength, reducing flow resistance coefficient, and improving sealing performance

Active Publication Date: 2017-03-22
NANFANG VENTILATOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As one of the important equipment of subway tunnel ventilation environment control system, the subway tunnel damper is directly related to the reliability of the system. The subway tunnel damper must meet the requirements of high temperature resistance, low leakage and low flow resistance, but the current Due to defects in the overall structural design of the subway tunnel air valve, it cannot fully meet the requirements. Therefore, it is imminent to develop a subway tunnel air valve with high temperature resistance, low leakage, and low flow resistance.

Method used

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  • Subway tunnel air valve with high-temperature resistance, high strength, low leakage and low flow resistance
  • Subway tunnel air valve with high-temperature resistance, high strength, low leakage and low flow resistance
  • Subway tunnel air valve with high-temperature resistance, high strength, low leakage and low flow resistance

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Experimental program
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Effect test

Embodiment 1

[0031] like Figures 1 to 7 As shown, a subway tunnel air valve with high temperature resistance, high strength, low leakage and low flow resistance includes valve body 1, blade 2A, valve seat 3A, sealing plate 4, rotating shaft 5, bearing 6, driving mechanism 7 and connecting Rod mechanism 8.

[0032] The frame section of the valve body 1 is "C" shaped and protrudes into the valve body 1. Both ends of the upper and lower frames of the valve body 1 are flanged upwards and connected with the two side frames by bolts. The valve seat 3A is located on the valve body. 1. On the inner wall of the upper and lower frames, the valve seat 3A is in the shape of an arch bridge and fits with the protrusions of the upper and lower frames.

[0033] The sealing sheet 4 is arranged on the inner wall of the frame on both sides of the valve body 1 , the sealing sheet 4 is in the shape of an arch bridge, and the sealing sheet 4 fits with the protrusions of the frames on both sides. Bearings 6 a...

Embodiment 2

[0037] The difference between the second embodiment and the first embodiment lies in the structure of the valve seat.

[0038] like Figure 9 middle Figure 9 As shown in .2, the valve seat 3B includes a baffle 310B and a pressing piece 320B. The baffle 310B is fixed on the protrusions of the upper and lower frames, and the pressing piece 320B is arranged on one side of the baffle 310B.

Embodiment 3

[0040] The difference between the third embodiment and the first embodiment lies in the structure of the blades.

[0041] like Figure 8 middle Figure 8 As shown in .2, the blade 2B includes two airfoils 210B with the same shape and a straight cross-section. The connecting plates 211B are arranged on both sides of the airfoil 210B. The blade 2B is symmetrically connected to the corresponding connecting plate 211B by bolts from the center of the airfoil 210B. or rivet connection, one side of the blade 2B is provided with a shrapnel 220B, and the side of the blade 2B with the shrapnel 220B is overlapped with the side of the other blade 2B without the shrapnel 220B between the two blades 2B, and the rotating shaft 5 passes through Bolts or rivets are installed between the two vanes 210B of the blade 2B.

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Abstract

The invention relates to a special adjusting air valve for an industrial-stage subway tunnel of a ventilation air conditioning system, in particular to a subway tunnel air valve with high-temperature resistance, low leakage and low flow resistance. The subway tunnel air valve comprises a valve body, a blade, a shaft, a bearing, upper and lower valve bases, a side sealing piece, a driving mechanism, a driving main shaft and a connecting rod mechanism; the connecting rod mechanism includes a rotating rod fixed with the shaft for opening and closing the blade, and a connecting rod for connecting with the adjacent rotating rod; the valve body includes upper and lower frames and side frames; the upper and lower frames and the side frames are C-shaped, and are projected into the valve body to excellently bond with the arched side sealing piece and the upper and lower valve bases to improve tightness thereof; and the upper and lower frames with two bend and cuffed ends are connected with the side frames through bolts or rivets. The subway tunnel air valve can safely and reliably realize normal opening and closing of the valve blade, and achieves such requirements as high-temperature resistance, low leakage and low flow resistance.

Description

technical field [0001] The invention relates to a subway tunnel damper. Background technique [0002] At present, with the rapid development of the people's economy in our country, the urban underground transportation is also developing rapidly. The rapid development of urban rail transit has improved the efficiency of urban traffic, but at the same time put forward higher requirements for the safety and reliability of rail transit. Tunnel ventilation system is an important part of rail transit environmental control system, it is responsible for normal ventilation and the important role of protecting passengers' life safety in case of fire, its reliability is undoubtedly one of the most important indicators. [0003] Due to the particularity of the space structure of the subway, once a fire accident occurs, it is very difficult to evacuate and fight the fire, which will easily cause huge casualties and property losses. Due to the large amount of combustible substances in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/22F16K1/36F16K1/42F16K27/02F16K31/04F16L59/16
CPCF16K1/223F16K1/42F16K27/02F16K31/04F16L59/161
Inventor 陈达海刘静甘瑞霞吕杰森刘基照龚进成汪义玲
Owner NANFANG VENTILATOR
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