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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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI 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 problem of air valve exhaust or suction when positive and negative water hammer occurs. Technical problems with slow processes leading to production accidents

Method used

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

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Effect test

Embodiment 1

[0029] like figure 1 Shown, a kind of insulation breathing manhole cover for air valve, comprises:

[0030] The well cover 1 is provided with a plurality of first ventilation holes 2, and a cylindrical support structure is provided under the well cover 1. A cavity 15 is provided inside the support structure, and a cylindrical inner cylinder 6 is provided inside the support structure. A plurality of second ventilation holes 7 are provided on the cylinder wall of the cylinder 6, a base plate 10 is provided at the bottom of the inner cylinder 6, a cylinder 16 is provided at the center of the base plate 10, and a plurality of third ventilation holes 11 are arranged on the bottom plate 10, above the third ventilation hole 11 A ring-shaped baffle 12 is provided, an upper plate 8 is arranged above the cylinder 16, and a middle partition 13 is arranged between the upper board 8 and the bottom plate 10. The middle partition 13 is provided with a plurality of fourth ventilation holes 14...

Embodiment 2

[0040] A method for using an insulating breathing manhole cover for an air valve, comprising the following steps:

[0041] Closed state: the bottom plate 10 of the inner cylinder 6 maintains an airtight state with the wall of the inner cylinder 6 under the tension of the spring 9, and at the same time, the ring-shaped cover plate 12 seals some third ventilation holes on the bottom plate 10 under the action of gravity. 11 closed, the manhole cover is closed;

[0042] Exhaust state: the air valve starts to exhaust, the pressure under the bottom plate 10 is greater than the pressure of the cavity 15, the annular cover plate 12 is lifted, 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 ventilation hole 2 are discharged in the well;

[0043] Inhalation state: the air valve starts to inhale, the pressure under the bottom plate 10 is lower than the pressure of the cavity 15, the spring 9 is ...

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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.

Description

technical field [0001] The invention belongs to the technical field of municipal engineering, and in particular relates to a thermal insulation breathing manhole cover for an air valve and a use method thereof. Background technique [0002] Valve wells are common structures in the field of municipal engineering and are widely used in water supply pipe networks. In the valve well, the valve can be opened and closed or repaired. The valve well is composed of a well base, a well shaft, a well cover and its accessories. Because the traditional manhole cover cannot quickly realize the discharge or suction of air, when the water pipeline produces positive and negative water hammer, it cannot meet the requirements of the air valve for rapid exhaust and suction, which affects the operation safety of the water pipeline. In addition, the exhaust of the air valve may also lift the manhole cover, causing safety production accidents. Therefore, traditional well covers are not suitable...

Claims

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Application Information

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IPC IPC(8): E02D29/14
CPCE02D29/14E02D29/1481E02D29/1436
Inventor 胡博赵莉杨硕杨玉思
Owner CHANGAN UNIV
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