CN210315894U

CN210315894U - Outdoor blowdown system in permafrost region

Info

Publication number: CN210315894U
Application number: CN201920668595.6U
Authority: CN
Inventors: 芮鹏飞; 王英梅; 侯鑫; 武贵龙; 刘国军; 陈继
Original assignee: Lanzhou University of Technology; Cold and Arid Regions Environmental and Engineering Research Institute of CAS
Current assignee: Lanzhou University of Technology; Northwest Institute of Eco Environment and Resources of CAS
Priority date: 2019-05-10
Filing date: 2019-05-10
Publication date: 2020-04-14
Anticipated expiration: 2029-05-10

Abstract

The utility model relates to an outdoor sewage system in permafrost region, this system include with the life district downcomer link to each other arrange the heat preservation sewage pipes more than the permafrost layer top layer in with arrange in the septic tank in permafrost layer. The heat-insulation sewage pipeline comprises a sewage pipeline, a heating circulating pipeline and a protective layer; the heating circulating pipeline is arranged in the sewage discharge pipeline, and the periphery of the sewage discharge pipeline is provided with a heat insulation layer I; the protective layer is arranged on the surface layer of the heat-insulating layer I; the tail end of the heat-insulation sewage discharge pipeline is connected with the septic tank, and a heat-insulation layer II is arranged on the periphery of the septic tank. The utility model discloses can effectively avoid causing intraductal freezing jam or even blow off pipe spalling.

Description

Outdoor blowdown system in permafrost region

Technical Field

The utility model relates to a permafrost region plumbing field especially relates to an outdoor sewage discharge system in permafrost region.

Background

In permafrost regions, the problem of sewage infrastructure is difficult to solve. In some areas, sewage draining facilities cannot normally run in winter, life is very inconvenient, and when the sewage draining pipes are arranged above the ground surface, the sewage draining pipes are easy to freeze to block or even to burst due to pipeline expansion. The blow off pipe buries the time because of frozen soil temperature is low equally easy to take place intraductally freezing, and the blow off pipe buries the thermal interference after can cause many years frozen soil to take place to melt and sink and cause other engineering basis disease problems, and frozen soil frost heaving also can produce the influence of certain degree to buried pipeline, still can't solve the blow off pipe after the blow off pipe increases the heat preservation and freeze the problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an outdoor blowdown system in permafrost region of freezing jam even blow off pipe spalling is avoided causing intraductal freezing is provided.

In order to solve the problem, the utility model relates to an outdoor sewage system in permafrost region, its characterized in that: the system comprises a heat-preservation sewage discharge pipeline which is connected with a sewer pipe of a living area and is arranged above the surface layer of the perennial frozen soil layer, and a septic tank which is arranged in the perennial frozen soil layer; the heat-insulation sewage pipeline comprises a sewage pipeline, a heating circulating pipeline and a protective layer; the heating circulating pipeline is arranged in the sewage discharge pipeline, and the periphery of the sewage discharge pipeline is provided with a heat insulation layer I; the protective layer is arranged on the surface layer of the heat-insulating layer I; the tail end of the heat-insulation sewage discharge pipeline is connected with the septic tank, and a heat-insulation layer II is arranged on the periphery of the septic tank.

The heating circulating pipeline is arranged above the sewage in the sewage discharge pipeline.

The heating circulating pipeline is provided with a water supply pipe and a water return pipe, and the water return pipe is connected with the heating boiler.

And the heat-insulating layer I and the heat-insulating layer II are made of polyurethane heat-insulating materials.

The protective layer is formed by winding glass fiber cloth, and asphalt waterproof paint is coated on the surface of the protective layer.

Compared with the prior art, the utility model has the following advantage:

1. the utility model discloses well heating circulating line arranges the sewage top in the sewage pipes in, not with sewage direct contact, prevents that sewage from causing the corruption to heating circulating line.

2. The utility model discloses be equipped with heating circulating line in the well sewage pipes, this warm circulating line heat dissipation makes sewage can not freeze in the sewage pipes, and then avoids causing intraductal freezing to block up blow off pipe spalling even.

3. The utility model discloses the sewage pipes periphery is equipped with the heat preservation, and this heat preservation lets the interior temperature stability of sewage pipes, reduces the influence of air ambient temperature to the sewage pipes interior temperature, improves heating circulating line's thermal efficiency simultaneously.

4. The utility model discloses well heat preservation top layer is equipped with the protective layer, and this protective layer has anticorrosive sun-proof effect, also has the effect of parcel heat preservation simultaneously.

5. The utility model discloses the periphery of septic tank is equipped with the heat preservation, and its temperature stability in order to guarantee septic tank and heat preservation sewage pipes is acted on in the heat preservation of this heat preservation, reduces the septic tank and to the thermal interference of peripheral permafrost layer, prevents that frozen soil from melting and sinking and cause other engineering ground diseases.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the heat-insulating sewage pipeline of the utility model.

In the figure: 1-permafrost layer; 2-heat preservation sewage pipes; 3, septic tanks; 41-insulating layer I; 42-insulating layer II; 5, sewage; 6-a sewage draining pipeline; 7-heating circulation pipeline; 8-protective layer.

Detailed Description

As shown in figures 1-2, the outdoor blowdown system for the permafrost region comprises a heat-preservation blowdown pipeline 2 which is connected with a sewer pipe of a living area and is arranged above the surface layer of a permafrost layer 1, and a septic tank 3 which is arranged in the permafrost layer 1.

The heat-preservation sewage discharge pipeline 2 comprises a sewage discharge pipeline 6, a heating circulating pipeline 7 and a protective layer 8; a heating circulating pipeline 7 is arranged in the sewage discharge pipeline 6, and a heat insulation layer I41 is arranged on the periphery of the sewage discharge pipeline; a protective layer 8 is arranged on the surface layer of the heat-insulating layer I41; the tail end of the heat-insulating sewage discharge pipeline 2 is connected with the septic tank 3, and the periphery of the septic tank 3 is provided with a heat-insulating layer II 42.

Wherein: the heating circulation pipe 7 is arranged above the sewage 5 in the sewage discharge pipe 6.

The heating circulation pipe 7 is provided with a water supply pipe and a water return pipe, and the water return pipe is connected to the heating boiler.

The heat-insulating layer I41 and the heat-insulating layer II 42 are made of polyurethane heat-insulating materials.

The surface of the protective layer 8 is coated with asphalt waterproof paint by winding glass fiber cloth.

When the septic tank works, sewage 5 flows into the septic tank 3 from a living area through the heat-preservation sewage discharge pipeline 2.

In the permafrost region of a frozen soil engineering and environment comprehensive observation research station (located in the abdominal region of the Qinghai-Tibet plateau, 34 degrees of north latitude, 51.2 degrees of east longitude, 92 degrees of 56.4 degrees of east longitude and 4628 meters of altitude) of the north foot river of the Qinghai-Tibet plateau, the daily average air temperature can reach-20 ℃ at the lowest, a sewage pipeline is stopped using in winter, and a sewage system is adopted during the repair of a 10-month house in 2017. Meanwhile, finite element numerical simulation is carried out on the pipeline condition, the diameter of the sewage pipeline is 270mm, the thickness of the protective layer is 50mm, the diameter of the heating circulating pipeline is 20mm, and if the sewage pipeline is filled with sewage, the sewage density is 1000kg/m³The thermal conductivity coefficient is 0.55W/(m DEG C), the specific heat capacity is 4200J/(kg. ℃), and the initial water temperature is 5 ℃; the density of the protective layer is 40 kg/m³The thermal conductivity coefficient is 0.022W/(m)DEG C), the specific heat capacity is 1460J/(kg. ℃); the temperature of the heating circulating pipeline is kept at 20 ℃ all the time, and the temperature of the outer side of the protective layer is

In the formulatAs a matter of time, the time is,φis the initial phase. The simulation results show that the water temperature is maintained at 10 ℃ or higher even at the lowest temperature in the cold season. Therefore, the utility model has better effect.

Claims

1. The utility model provides an outdoor blowdown system in permafrost region which characterized in that: the system comprises a heat-preservation sewage pipeline (2) which is connected with a sewer pipe of a living area and is arranged above the surface layer of a permafrost layer (1), and a septic tank (3) which is arranged in the permafrost layer (1); the heat-insulation sewage pipeline (2) comprises a sewage pipeline (6), a heating circulating pipeline (7) and a protective layer (8); the heating circulating pipeline (7) is arranged in the sewage discharge pipeline (6), and the periphery of the sewage discharge pipeline is provided with a heat insulation layer I (41); the protective layer (8) is arranged on the surface layer of the heat-insulating layer I (41); the tail end of the heat-insulating sewage discharge pipeline (2) is connected with the septic tank (3), and a heat-insulating layer II (42) is arranged on the periphery of the septic tank (3).

2. The permafrost region outdoor sewage system of claim 1, further comprising: the heating circulating pipeline (7) is arranged above the sewage (5) in the sewage discharge pipeline (6).

3. The permafrost region outdoor sewage system of claim 1, further comprising: the heating circulating pipeline (7) is provided with a water supply pipe and a water return pipe, and the water return pipe is connected with a heating boiler.