Heat preservation breathing well lid for air valve and using method

An air valve and manhole cover technology, which is used in construction, artificial islands, infrastructure engineering, etc., can solve problems such as air valve exhaust or slow production accidents in the suction process, and achieve the effect of avoiding the impact.

Active Publication Date: 2021-12-31
CHANGAN UNIV
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AI-Extracted Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a thermal insulation breathing manhole cover for an air valve and its use method, so as to solve the ...
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Abstract

The invention belongs to the technical field of municipal engineering, and particularly discloses a heat preservation breathing well lid for an air valve and a using method. The well lid is provided with a plurality of first vent holes, a cylindrical supporting structure is arranged below the well lid, a cavity is formed inside the supporting structure, a cylindrical inner cylinder is arranged in the supporting structure, a plurality of second vent holes are formed in the cylinder wall of the inner cylinder, a bottom plate is arranged at the bottom of the inner cylinder, a column body is arranged in the center of the bottom plate, a plurality of third vent holes are formed in the bottom plate, an annular baffle is arranged above the third vent holes, an upper plate is arranged on the column body, a middle partition plate is arranged between the upper plate and the bottom plate, a plurality of fourth vent holes are formed in the middle partition plate, and a spring is arranged on the column body between the middle partition plate and the upper plate. According to the heat preservation breathing well lid for the air valve and the using method, the upper plate, the column body, the bottom plate and an annular cover plate can move up and down along with the change of the pressure in a valve well to meet the exhaust and air suction requirements of the air valve, and production accidents caused by the slow exhaust or air suction process are avoided.

Application Domain

Artificial islandsUnderwater structures

Technology Topic

PhysicsHeat conservation +2

Image

  • Heat preservation breathing well lid for air valve and using method

Examples

  • Experimental program(2)

Example Embodiment

[0028] Example 1
[0029] like figure 1 As shown, a thermal insulation breathing well cover for an air valve includes:
[0030] A manhole cover 1, a plurality of first ventilation holes 2 are arranged on the well cover 1, a cylindrical support structure is arranged below the manhole cover 1, a cavity 15 is arranged inside the support structure, and a cylindrical inner cylinder 6 is arranged in the support structure. A plurality of second ventilation holes 7 are provided on the cylinder wall of the cylinder 6, a bottom plate 10 is provided at the bottom of the inner cylinder 6, a column 16 is provided in the center of the bottom plate 10, a number of third ventilation holes 11 are provided on the bottom plate 10, and the top of the third ventilation hole 11 is provided A ring-shaped baffle 12 is provided, an upper plate 8 is arranged above the cylinder 16, a middle partition plate 13 is arranged between the upper plate 8 and the bottom plate 10, and a number of fourth ventilation holes 14 are arranged on the middle partition plate 13. A spring 9 is provided on the cylinder 16 between 13 and the upper plate 8 .
[0031] The first ventilation hole 2 is arranged in the middle area of ​​the manhole cover 1 .
[0032] The support structure includes: a first connection part 3 and a second connection part 4, a first connection part 3 is arranged under the manhole cover 1, a second connection part 4 is arranged under the first connection part 3, and the bottom of the second connection part 4 is a circular ring The diameter of the ring is the same as the diameter of the inner cylinder 6.
[0033] The first connecting part 3 and the manhole cover 1 adopt an integrated molding process. The second connecting member 4 is placed above the air valve, and is softly sealed with the first connecting member 3 through a rubber gasket 17 to form a cavity 15 .
[0034] In order to ensure the normal operation of the suction and exhaust mechanisms, the cavity 15 is provided with a sundries-preventing cover 5 , and the sundry-preventing cover 5 is arranged above the inner cylinder 6 .
[0035] The bottom plate 10, the connecting body 3 and the connecting body 4 separate the external environment from the valve well body to form a thermal insulation structure.
[0036] The column body 16 is connected with the upper plate 8 and the bottom plate 10 by bolts.
[0037] A certain gap is left between the annular cover plate 12 , the inner cylinder 6 and the cylinder 16 .
[0038] The upper plate 8 , the column body 16 , the bottom plate 10 and the annular cover plate 12 as a whole can move up and down with the change of the pressure in the valve well.

Example Embodiment

[0039] Example 2
[0040] A method for using a thermal insulation breathing well cover for an air valve, comprising the following steps:
[0041] Closed state: the bottom plate 10 of the inner tube 6 is kept in a sealed state with the wall of the inner tube 6 under the tension of the spring 9. At the same time, the ring-shaped cover plate 12 under the action of gravity closes the several third ventilation holes on the bottom plate 10. 11 is closed, the manhole cover is closed;
[0042] Exhaust state: the air valve begins to exhaust, the pressure below the bottom plate 10 is greater than the pressure of the cavity 15, the annular cover plate 12 is lifted up, and the pressurized gas passes through the third vent hole 11, the fourth vent hole 14, and the second vent hole in sequence 7 and the first vent hole 2 are discharged into the well;
[0043] Inhalation state: the air valve begins to inhale, the pressure below the bottom plate 10 is lower than the pressure of the cavity 15, the spring 9 is compressed under the action of negative pressure, the height of the bottom plate 10 is reduced, and a gap is formed between the inner cylinder 6 and the cylinder wall, and the pressure gas is in turn The air is sucked into the air valve through the first vent hole 2 , the second vent hole 7 , the fourth vent hole 14 and the third vent hole 11 .

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Description & Claims & Application Information

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