SU1038427A1 - Sewage tubular overfall - Google Patents

Description

2. The tubular differential according to claim 1, characterized in that the supply manifold is provided with

distributing well with an air bleeder placed in it.

This invention relates to devices for transporting wastewater to deep-seated reservoirs from a surface network.

As a result of the decomposition of organic substances contained in wastewater, hydrogen sulfide, carbon dioxide, methane, etc. are formed. These gases have a destructive effect on the pipe material (gas corrosion), and they are also dangerous for the maintenance personnel. One of the ways to combat gas corrosion and create normal conditions for operating personnel is ventilation. (Ventilation of surface sewer networks, for example, occurs through house drainage systems.

In addition, reinforced concrete hollow masts installed for lighting and suspension of various wires f can be used for inlet ventilation.

The disadvantage of this solution is that ventilation pipes with a diameter of 150 mm, laid with a slope of 0.01 in the direction of the well, are supplied from the sewer manholes to the base of the hollow masts. For country sewers, ventilation reinforced concrete pipes of large diameter or mines with a height of at least 3 m are installed.

Widespread construction of the main collectors of the city at great depths (up to 100. m) and large diameters (1.5-, 5 m), designed for a long service life. Sewage from the surface network enters deep-sewed sewers using sewers. The most widely used tubular drops are more economical and reliable in operation compared to the multistage differences of the practical profile. All constructions

tubular overhangs perform only the task of transporting wastewater from the overlying sewer network and quenching the excess energy of the falling liquid.

Closest to the present invention is a sewer tubular drop containing inlet and deep-laid drainage collectors, a shaft with a water well at the base and one hundred meters, the overflow funnel of which is connected to the inlet manifold and the outlet opening is located in the water well 2.

A disadvantage of the known sewage pipe-liner is the lack of ventilation of the deep-laid sewer. In addition, a drop in the flow of liquid due to the ejection capacity sucks air. Since there is no fresh air entering the sewage shaft, contaminated air from the overlying sewer network enters a deep-seized collector through the differential and thereby worsens the gas situation even more.

The purpose of the invention is to protect the above-water part of a deep-laid exhaust manifold from gas corrosion and to ensure safe working conditions.

The goal is achieved by the fact that a sewer tubular neper pad containing inlet and deep-laid waste collectors, a shaft with a water well at the base and standing, the overflow funnel of which is attached to the inlet manifold, and the outlet is located in the water well. a stove above the overflow funnel with a supply ventilation pipe installed therein. At the same time, the inlet manifold is equipped with a distribution well with an air discharge section placed in it. In Fig. 1, a sewer pipe is shown; FIG. 2 is a section A-A in FIG. one ; Fig. 3 section .B-B in Fig. 1. A sewage tubular drop consists of an inlet collector 1, an outlet deep-sewed collector 2, a shaft 3, a water well j, a stand 5, a sludge funnel 6, a slab 7 a vent pipe 8, a distribution well 9 and an air extractor 10. The device operates as follows. Sewage from several sewage pipelines (not shown) is supplied to distribution well 9 and through the supply manifold 1 through the overflow funnel 6 and one hundred to five they get into the water well 4, and then into the deep-seized reservoir 2. 5, due to its ejection capacity, sucks air, which then enters a deep-laid collector 2. Air flows through the inlet pipe 8. The presence of the air bleeder 10 contributes to an increase in air flow through the inlet pipe 8 and prevents the ingress of polluted air from the overlying sewer network. The number of incoming air is influenced by many factors: pressure drop and temperature along the height of the sewer. 5, the dynamic effect of the flow of waste liquid, viscosity forces, the degree of filling of the cross section at the inlet of the waste liquid in the RENT 5 (Fig. 3). Some of the forces act in opposite directions, but their overall impact is negligible. The main factors affecting the amount of incoming air are the forces of viscosity friction I at the interface of the sewage water-air interface and the degree of filling of the cross section at the inlet of the waste liquid in a hundred to 5. So as a hundred to 5 for satisfactory operation of the entire network is calculated on the free-flow mode of motion, then the degree of filling of the cross section at the inlet of the waste liquid in hundred to 5 will be less than one. Consequently, the flow of air into the deep-laid collector 2 will occur continuously regardless of the season. . The intake of air polluted by harmful gases is prevented by the air pusher installed in the distribution well. Depending on the change in the level of the waste liquid in the inlet manifold, the air bleed valve rises or falls, preventing the penetration of harmful gases from the internal surface part of the supply manifold and the surface part of the deep-laid waste collector. When the air vent is installed, the amount of air entering through the intake pipe increases and the air intake of the polluted air stops. The invention will increase the reliability of sewage, and with intensive construction of deep-laid collectors built using shield sinking, the issue of THEIR durability and reliability takes on enormous importance (taking into account j that the cost of a 1 km tunnel averages 1.0 million rubles). also improve the working conditions of service personnel. KrGbme addition, the saturation of the oxygen with exact waters in the application of this instruction safely affects the purification processes in the future.

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Claims (2)

1. DRAINAGE TUBULAR DIFFERENCE, containing inlet and deep-laid outlet manifolds, a shaft with a water well in the base and a riser, a drain funnel of which is connected to the inlet manifold, and an outlet opening 'is located in the water well, which is connected by the fact that , in order to protect the surface of the deep-seated outlet manifold from gas corrosion, and to ensure safe working conditions, it is equipped with a plate sealed above the spill funnel with a supply vein installed in it ilyatsionnoy pipe. fig SU. „, 1038427> ί 2. Tubular difference in π. 1, characterized in that the inlet manifold is provided with a distribution well with an air baffle located therein. ί