CN220666403U

CN220666403U - Device for strengthening ventilation of sewage pipe network

Info

Publication number: CN220666403U
Application number: CN202321405823.3U
Authority: CN
Inventors: 周传; 瞿露; 王浩然; 皮家悦; 陈光荣; 潘傲
Original assignee: Central and Southern China Municipal Engineering Design and Research Institute Co Ltd
Current assignee: Central and Southern China Municipal Engineering Design and Research Institute Co Ltd
Priority date: 2023-06-02
Filing date: 2023-06-02
Publication date: 2024-03-26
Anticipated expiration: 2033-06-02

Abstract

The utility model discloses a device for strengthening ventilation of a sewage pipe network, which comprises: the downstream ventilation pipe and the four-way pipe are fixedly connected with the wall surface of a downstream building; the bottom end of the downstream ventilation pipe is communicated with the first inspection well in a sealing way, one end of each four-way pipe is communicated with an air outlet of each air conditioner outside the upstream building, and a plurality of four-way pipes are communicated in series in the vertical direction through the upstream ventilation pipe; one side of the four-way pipe, which is close to the air outlet of the air conditioner external unit, is provided with a first valve unit, one side of the four-way pipe, which is far away from the air outlet of the air conditioner external unit, is provided with a second valve unit in the horizontal direction, and the outlet of the upper end of the four-way pipe, which is positioned at the top end of the upstream ventilation pipe, is provided with a third valve unit, and the bottom end of the upstream ventilation pipe is communicated with the second inspection well in a sealing way. The device for strengthening ventilation of the sewage pipe network solves the problem that in the prior art, the harmful gas in the sewage pipe in the fields of building drainage and municipal engineering is accumulated to cause casualties.

Description

Device for strengthening ventilation of sewage pipe network

Technical Field

The utility model relates to the field of building drainage and municipal engineering, in particular to a device for strengthening ventilation of a sewage pipe network.

Background

The accumulation of methane and hydrogen sulfide in town sewage and industrial sewage pipelines presents a potential threat to the proper functioning of sewage pipelines and the life and property safety of residents. Urban sewage pipelines and industrial sewage pipelines normally run under non-full flow, and the accumulation of harmful gases such as methane, hydrogen sulfide and the like is often caused in the pipeline head space. Wherein, methane is a flammable and explosive gas, and even if the methane is mixed with air in low concentration, the methane is extremely easy to explode when encountering open fire; the high-concentration hydrogen sulfide not only poisons the health of human bodies, but also can corrode the pipe wall in a wet environment to cause sewage leakage.

Research has shown that the mass propagation of anaerobic bacteria such as Sulfate Reducing Bacteria (SRB) and Methanogens (MA) is the root cause of methane and hydrogen sulfide production and accumulation. Because most sewage pipelines are buried underground and have poor gas exchange with the external environment, oxygen consumed by aerobic microorganisms and bacteria in the pipelines cannot be effectively supplemented, and therefore, a local anaerobic environment is easy to form. In this environment, sulfate Reducing Bacteria (SRB) and Methanogens (MA) decompose organic compounds hydrogen sulfide and methane. If hydrogen sulfide and methane cannot be timely led out of the sewage pipeline, the hydrogen sulfide and methane are accumulated continuously, and adverse effects are finally caused.

Therefore, the key to reducing the accumulation of harmful gases and avoiding casualties is to effectively ventilate the sewage pipeline, improve the anaerobic environment in the pipeline network and fundamentally inhibit the proliferation of anaerobic bacteria. Various ventilation measures adopted at present can be largely divided into two types of power and no-power according to whether external power is needed or not:

(1) The method is powered, the inspection well is opened, fresh air is conveyed into the underground pipe network by using the air blower, so that the oxygen concentration is increased, partial positive pressure can be formed, the goal of rapid ventilation is realized, the effect cannot be continued for a long time, and the use of the air blower needs to consume power.

(2) The system is unpowered, and the unpowered mode is that a vertical exhaust pipe is connected to the inspection well, harmful gas in the underground sewage pipeline is led out by utilizing the natural ventilation principle and is diffused in the upper air, and the gas phase of the sewage system always maintains a micro negative pressure state, so that the harmful gas does not overflow from a gap or an opening hole of the well lid, and the living environment is improved. The method does not need to consume power, but the use effect is greatly influenced by the external environment. For example, in hot and windless summer, the natural ventilation effect is difficult to be expected under the condition that the gas phase temperature of the sewage pipeline is lower than the external environment, so that certain limitation exists.

Disclosure of Invention

The utility model aims to overcome the technical defects, provides a device for strengthening ventilation of a sewage pipe network, and solves the problem that in the prior art, the accumulation of harmful gas in a sewage pipeline in the fields of building drainage and municipal engineering causes casualties.

In order to achieve the technical purpose, the technical scheme of the utility model provides a device for strengthening ventilation of a sewage pipe network, which comprises:

a downstream vent pipe, a four-way pipe; the downstream ventilation pipe is fixedly connected with the wall surface of the downstream building; the bottom end of the downstream ventilation pipe is communicated with the first inspection well in a sealing way; one end of each four-way pipe is communicated with an air outlet of each air conditioner outside the upstream building; the four-way pipes are communicated in series in the vertical direction through the upstream ventilation pipe; a first valve unit is arranged on one side of the four-way pipe, which is close to the air outlet of the air conditioner external unit; in the horizontal direction, a second valve unit is arranged on one side of the four-way pipe away from the air outlet of the air conditioner external unit; a third valve unit is arranged at the outlet of the upper end of the four-way pipe positioned at the top end of the upstream ventilation pipe; the bottom end of the upstream ventilation pipe is communicated with the second inspection well in a sealing mode.

Compared with the prior art, the utility model has the beneficial effects that:

(1) In summer, the season that harmful gas is accumulated most easily in the sewage pipeline, but the natural ventilation effect is not ideal, the air conditioner external air outlet is connected with the sewage pipeline requiring ventilation by using the upstream ventilation pipe, and hot air discharged from the air conditioner external air outlet is led into the sewage pipeline, so that the air in the sewage pipeline can be pushed to move along the water flow direction, the temperature of the gas phase space of the pipeline can be effectively increased, the natural ventilation effect is enhanced, and finally the air is led out through the downstream exhaust pipe, and the organized discharge is realized.

(2) The waste heat gas discharged by the air outlet of the air conditioner external unit is recycled, and continuous ventilation and air exchange can be realized on the sewage pipeline without adding an additional power device.

(3) Simple structure and small occupied area.

(4) Through setting up concentration detection alarm unit and convenient to detach's interface, prevent that poisonous and harmful gas from getting into the outer machine of air conditioner even indoor.

Drawings

FIG. 1 is a schematic diagram of a device for enhancing sewage pipe network ventilation provided by the utility model, wherein the device utilizes waste heat gas provided by an air conditioner external unit to realize sewage pipe ventilation;

FIG. 2 is a schematic diagram of a device for enhancing ventilation of a sewage pipe network, which is provided by the utility model, for realizing ventilation of a sewage pipe under the natural ventilation effect;

FIG. 3 is a schematic diagram of the connection structure between the four-way pipe and the top air conditioner outdoor unit of the upstream building in the device for strengthening the ventilation of the sewage pipe network;

fig. 4 is a schematic diagram of a connection structure between a four-way pipe and an air conditioner external unit at an intermediate layer of an upstream building in the device for strengthening ventilation of a sewage pipe network.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, 2, 3 and 4, the present embodiment provides a device for enhancing ventilation of a sewage pipe network, which includes: the downstream ventilation pipe 1 and the four-way pipe 3 are fixedly connected with the wall surface of the downstream building 52; the bottom end of the downstream ventilation pipe 1 is communicated with the first inspection well 11 in a sealing way; one end of each four-way pipe 3 is communicated with the air outlet of each air conditioner external unit 4 outside the upstream building 51; a plurality of the four-way pipes 3 are communicated in series in the vertical direction through the upstream ventilation pipe 2; a first valve unit 91 is arranged on one side of the four-way pipe 3 close to the air outlet of the air conditioner external unit 4; in the horizontal direction, a second valve unit 92 is arranged on one side of the four-way pipe 3 away from the air outlet of the air conditioner external unit 4; a third valve unit 93 is arranged at the outlet of the upper end of the four-way pipe 3 positioned at the top end of the upstream ventilation pipe 2; the bottom end of the upstream vent pipe 2 is in sealed communication with the second manhole 12.

Preferably, the downstream ventilation pipe 1 is a dedicated ventilation pipe of the downstream building 52.

Furthermore, the number of the four-way pipes 3 is the same as the number of the air conditioner external units 4 fixed outside the wall of the upstream building 51; a plurality of the air-conditioning outdoor units 4 are arranged on an outer wall of the upstream building 51 in a vertical direction; one end of each four-way pipe 3, which is close to the air conditioner external unit 4, is correspondingly communicated with the air outlet of each air conditioner external unit 4 one by one;

further, the bottom of the downstream ventilation pipe 1 with the inspection shaft 11 carries out detachable fixed connection through the bolt, the bottom of the downstream ventilation pipe 1 with be provided with sealing gasket between the first inspection shaft 11, the upstream ventilation pipe 2 with all be provided with sealing gasket between the second inspection shaft 12, the bottom of the downstream ventilation pipe 1 with the maintenance and the dismantlement of the convenient later stage constructor of detachable fixed connection of first inspection shaft 11, wherein sealing gasket's setting has improved the downstream ventilation pipe with the leakproofness between the first inspection shaft 11 prevents that gas from revealing from this bottom, causes harmful effects to relevant personnel's health, reduces the loss of hot gas flow, improves ventilation effect.

Further, the top of the downstream ventilation pipe 1 is provided with the unpowered hood 7, the top of the upstream ventilation pipe 2 positioned at the top of the upstream building 51 is also provided with the unpowered hood 7, the unpowered hood 7 is also called a spherical ventilator and a cyclone ventilator, and the device is a device which utilizes the principle that natural ventilation in nature pushes turbine rotation of a fan and indoor and outdoor air convection to accelerate and convert air flow in any parallel direction into air flow vertical from bottom to top so as to improve the ventilation effect of the building, does not use electricity, has no noise, can operate for a long time, eliminates indoor hot air, wet air and dirty air, rationalizes the top of a roof according to the natural rule of the air and the airflow flow principle, can rapidly exhaust the indoor hot air and dirty air, and improves the indoor environment.

Further, the four-way pipe 3 is close to the one end of the outer machine 4 of air conditioner with the one end of the outer machine 4 air outlet of air conditioner carries out detachable fixed connection, and the maintenance and the dismantlement of later stage staff of being convenient for, the four-way pipe 3 is close to be provided with sealing unit between the one end of the outer machine 4 of air conditioner and the one end of the outer machine 4 air outlet of air conditioner, this sealing unit selects the rubber material, and this sealing unit's setting is in order to prevent four-way pipe 3 with the outer machine 4 air outlet hookup location of air conditioner appears revealing the phenomenon, leads to the pressure value of the outer machine 4 air outlet of air conditioner reduces, thereby reduces the inside fluidness of upstream ventilation pipe 2.

Further, a first valve unit 91 is disposed on a side of the four-way pipe 3 close to the air outlet of the air conditioner external unit 4, a second valve unit 92 is disposed on a side of the four-way pipe 3 far away from the air outlet of the air conditioner external unit 4 in a horizontal direction, a third valve unit 93 is disposed at an outlet of an upper end of the four-way pipe 3 located at a top end of the upstream ventilation pipe 2, and the first valve unit 91, the second valve unit 92 and the third valve unit 93 control opening and closing of corresponding outlets of the four-way pipe 3, wherein the first valve unit 91, the second valve unit 92 and the third valve unit 93 all adopt electric valves. When the air conditioner is in summer, that is, when the outdoor temperature rises to a certain extent, the natural ventilation efficiency in the sewage pipeline 6 is insufficient, and when the ventilation effect needs to be enhanced, the third valve unit 93 at the upper end of the four-way pipe 3 positioned at the top end of the upstream building 51 is closed, and meanwhile, the second valve unit is also in a closed state, and the air in the sewage pipeline 6 is pushed to be discharged from the downstream ventilation pipe to the atmosphere by the pressure brought by the air flow at the outlet of the air conditioner external unit 4.

Further, a concentration detection alarm unit 10 is disposed in the four-way pipe 3 near the air outlet of the air conditioner external unit 4, specifically, in order to prevent a small amount of harmful gas from entering the air outlet of the air conditioner external unit 4 and even flowing into the room through the upstream ventilation pipe 2 under the condition that the sealing of the first valve unit 91 is not tight, the concentration detection alarm unit 10 is disposed on one side of the first valve unit 9 connected with the air outlet of the air conditioner external unit 4, and when the concentration detection alarm unit 10 alarms, residents conveniently disconnect the four-way pipe 3 near one end of the air outlet of the air conditioner external unit 4 from the air outlet of the air conditioner external unit 4.

Further, when the air conditioner is in summer, the air discharged from the air outlet of the air conditioner external unit 4 flows through the four-way pipe 3 to the first inspection well 11, flows upwards to the second inspection well 12 through the sewage pipeline 6, and finally is discharged to the atmosphere through the downstream ventilation pipe 1. Specifically, in summer, when the natural ventilation efficiency of the sewage pipeline 6 is insufficient and the ventilation effect needs to be enhanced, the manhole covers of the first manhole 11 and the second manhole 12 are closed, so that only one resident air conditioner outdoor unit 4 is started at this time, the air outlet of the air conditioner outdoor unit 4 is enabled to be in a closed state, the third valve unit 93 and the second valve unit 92 are opened, the first valve unit 91 of the air outlet of the air conditioner outdoor unit 4 which is correspondingly opened is opened, hot air flows downwards along the upstream ventilation pipe 2 and finally enters the sewage pipeline 6, the air in the pipeline is pushed to flow in a heating and pressurizing mode, and finally, the organized discharge is realized from the downstream ventilation pipe 1, and for households which are not started by the air conditioner outdoor unit 4, the first valve unit 91 which is close to the air outlet of the air conditioner outdoor unit 4 is closed, and the hot air is prevented from losing midway.

Further, in the two seasons of spring and autumn, that is, when the temperature of the gas phase space inside the sewage pipeline 6 is greater than the outside environment temperature, the first valve unit 91 and the second valve unit 92 are both in the closed state, the third valve unit 93 is in the open state, and the air flow in the sewage pipeline 6 flows to the first inspection well 11 and the second inspection well 12 and is discharged to the atmosphere through the downstream ventilation pipe 1/the upstream ventilation pipe 2. In particular, the natural ventilation effect of the sewer piping 6 is generally sufficient during the spring and autumn without enhancing the ventilation effect. When all the air conditioning outdoor units 4 of the households are in the closed state, the third valve unit 93 is in the open state, the first valve unit and the second valve unit 92 are in the closed state, the upstream ventilation pipe 2 has the same effect as the downstream ventilation pipe 1, the air flow direction is the same, and the harmful gas in the sewage pipeline 6 is discharged by utilizing the natural ventilation principle under the action of the chimney effect and is diffused in the upper air.

The device for strengthening ventilation of the sewage pipe network is mainly applied to the following background.

In the first embodiment, the device for strengthening ventilation of a sewage pipe network provided by the utility model is applied to a residential building 51, the air in the sewage pipe 6 is blown to be discharged outwards by using the wind power provided by the air conditioner external unit 4 outside the residential building 51, when the residential building 51 does not use the air conditioner external unit 4, the first valve unit 91 close to the air outlet of the air conditioner external unit 4 is closed, the air in the sewage pipe 6 is prevented from flowing to a residential building, at the moment, the air in the sewage pipe 6 is discharged to the atmosphere by using natural exhaust, and when the residential building 51 uses the air conditioner external unit 4, the air discharged from the air outlet of the air conditioner external unit 4 pushes the air in the sewage pipe 6 to flow to the downstream ventilation pipe 1, and the air is discharged to the atmosphere through the downstream ventilation pipe 1.

In the second embodiment, the device for enhancing ventilation of a sewage pipe network provided by the utility model is applied to an industrial building 51, the sewage pipeline 6 is buried under the industrial building 51, and the device for enhancing ventilation of a sewage pipe network provided by the utility model is fixedly connected with the industrial building 51, so that one end outlet of the four-way pipe 3 is communicated with the air outlet of the central air conditioner external unit 4 or the air outlet of the industrial air conditioner external unit 4 of the industrial building 51, wherein the air volume discharged by the air outlet of the central air conditioner external unit 4 or the air outlet of the industrial air conditioner external unit 4 is larger, the pressure is higher, and the air of the sewage pipeline 6 is easier to be driven to be discharged outwards through the downstream ventilation pipe 1.

Aiming at the device for strengthening the ventilation of the sewage pipe network, the utility model also provides an installation method of the device:

s1, measuring the height of the downstream building 52 on site by staff, selecting one downstream ventilation pipe 1 with the same height as the downstream building 52, and fixedly connecting the downstream ventilation pipe 1 with the building 5 through bolts;

s2, the lower end of the downstream ventilation pipe 1 is communicated with the second inspection well 12 at the bottom of the downstream building 52 in a sealing way by staff;

s3, selecting a plurality of four-way pipes 3; the number of the four-way pipes 3 is consistent with the number of air conditioner external machines fixed outside the 52 walls of the downstream building; one end of each four-way pipe 3, which is close to the air conditioner external unit 4, is correspondingly communicated with the air outlet of each air conditioner external unit 4 one by one;

s4, installing a first valve unit 91, a second valve unit 92 and a third valve unit 93 in the four-way pipe 3;

s5, sealing the upstream ventilation pipe 2 at the upper outlet and the lower outlet of the four-way pipe 3; the upstream ventilation pipe 2 communicated with the bottom/top of the four-way pipe 3 is communicated with the upstream ventilation pipe 2 at the top/bottom of the adjacent four-way pipe 3;

s6, the upstream ventilation pipe 2 is communicated with the first inspection well 11 in a sealing mode.

Working principle: the device for strengthening ventilation of the sewage pipe network mainly comprises a downstream ventilation pipe 1, an upstream ventilation pipe 2, a four-way pipe 3, a valve unit 9 and a concentration detection alarm unit 10. The downstream ventilation pipe 1 is fixedly connected with the downstream building 52, the bottom end of the downstream ventilation pipe 1 is in sealed and through connection with the first inspection well 11, the upper end of the downstream ventilation pipe 1 is provided with an unpowered hood 7, the air outlets of the air-conditioning external machines 4 of the upstream building are in through connection with four-way pipes 3, the air outlets of each air-conditioning external machine 4 are in through connection with the four-way pipes 3, the four-way pipe 3 positioned at the top end of the upstream building 51 is provided with a first valve unit 91 at one side of the four-way pipe 3 close to the air outlets of the air-conditioning external machines 4; in the horizontal direction, a second valve unit 92 is disposed on a side of the four-way pipe 3 away from the air outlet of the air conditioner external unit 4, and a third valve unit 93 is disposed on an upper end outlet of the four-way pipe 3 located at the top end of the upstream ventilation pipe 2. When the air-conditioning ventilation system is in summer, the natural ventilation efficiency in the sewage pipeline 6 is insufficient, when the ventilation effect needs to be enhanced, the second valve unit 92 and the third valve unit 93 are in closed states, the first valve unit 91 of the air outlet of the air-conditioning outdoor unit 4 which is correspondingly opened is opened, the air in the sewage pipeline 6 is pushed to be discharged from the downstream ventilation pipe 1 by the pressure brought by the air flow at the air outlet of the air-conditioning outdoor unit 4, in order to prevent a small amount of harmful gas from entering the air outlet of the air-conditioning outdoor unit 4 through the upstream ventilation pipe 2 even flowing into a room under the condition that the first valve unit 91 is not tightly sealed, and when the concentration detection alarm unit 10 alarms, a resident conveniently disconnects the four-way pipe 3 close to one end of the air outlet of the air-conditioning outdoor unit 4 from the air outlet of the air-conditioning outdoor unit 4. In summer, the ventilation effect of the sewage pipeline needs to be enhanced, and at this time, the air discharged from the air outlet of the air conditioner external unit 4 is utilized to push the air in the sewage pipeline 6 to be guided and discharged to the downstream ventilation pipe 1 and then to flow to the atmosphere. In spring and autumn, the first valve unit 91 and the second valve unit 92 are closed, so that the air in the sewage pipeline 6 flows from the first inspection well 11 and the second inspection well 12 to the downstream ventilation pipe 1 or the upstream ventilation pipe 2 to be discharged to the atmosphere by natural ventilation without strengthening the ventilation effect of the sewage pipeline.

The above-described embodiments of the present utility model do not limit the scope of the present utility model. Any of various other corresponding changes and modifications made according to the technical idea of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A device for enhancing ventilation of a sewage pipe network, comprising:

a downstream vent pipe, a four-way pipe; the downstream ventilation pipe is fixedly connected with the wall surface of the downstream building; the bottom end of the downstream ventilation pipe is communicated with the first inspection well in a sealing way; one end of each four-way pipe is communicated with an air outlet of each air conditioner outside the upstream building; the four-way pipes are communicated in series in the vertical direction through an upstream ventilation pipe; a first valve unit is arranged on one side of the four-way pipe, which is close to the air outlet of the air conditioner external unit; in the horizontal direction, a second valve unit is arranged on one side of the four-way pipe away from the air outlet of the air conditioner external unit; a third valve unit is arranged at the outlet of the upper end of the four-way pipe positioned at the top end of the upstream ventilation pipe; the bottom end of the upstream ventilation pipe is communicated with the second inspection well in a sealing mode.

2. The device for strengthening ventilation of a sewage pipe network according to claim 1, wherein the number of the four-way pipes is identical to the number of air-conditioning external machines fixed outside the upstream building wall; a plurality of the air conditioner external units are arranged on the external wall of the upstream building along the vertical direction; one end of each four-way pipe, which is close to the air conditioner external unit, is correspondingly communicated with the air outlet of each air conditioner external unit one by one.

3. The device for strengthening ventilation of a sewage pipe network according to claim 1, wherein the bottom end of the downstream ventilation pipe is detachably and fixedly connected with the first inspection well through bolts, and a sealing gasket is arranged between the bottom end of the downstream ventilation pipe and the first inspection well; sealing gaskets are also arranged between the upstream ventilation pipe and the second inspection well.

4. The device for strengthening ventilation of a sewage pipe network according to claim 1, wherein the top end of the downstream ventilation pipe is provided with an unpowered hood; the top end of the upstream ventilation pipe is provided with an unpowered hood.

5. The device for strengthening ventilation of a sewage pipe network according to claim 1, wherein one end of the four-way pipe close to the air conditioner external unit is detachably and fixedly connected with one end of an air outlet of the air conditioner external unit; and a sealing unit is arranged between one end of the four-way pipe, which is close to the air conditioner external unit, and one end of the air conditioner external unit air outlet.

6. The device for strengthening ventilation of a sewage pipe network according to claim 1, wherein a concentration detection alarm unit is arranged in an outlet of the four-way pipe, which is close to an air outlet of the air conditioner external unit, and the first valve unit, which is close to the air outlet of the air conditioner external unit, prevents the four-way pipe from being communicated with the air outlet of the air conditioner external unit when the concentration detection alarm unit alarms.

7. The apparatus for reinforcing a sewage pipe network ventilation according to claim 1, wherein when said first valve unit is opened and said second valve unit and said third valve unit are both closed, the air discharged from said air conditioner external air outlet flows through said four-way pipe to said first manhole, flows through the sewage pipe to said second manhole, and finally is discharged to the atmosphere through said downstream ventilation pipe.

8. The apparatus for reinforcing a sewage network ventilation according to claim 1, wherein when said first valve unit is closed, said second valve unit is closed, and said third valve unit is opened, the air flow in the sewage pipe flows to said first inspection well and said second inspection well, and is discharged to the atmosphere through said downstream ventilation pipe and said upstream ventilation pipe.