Exhaust device of drainage inspection well

Abstract

The utility model provides an exhaust device of a drainage inspection well, an exhaust pipeline is connected to an exhaust port of a well chamber of the drainage inspection well, a heat conduction pipe section is arranged on the side, extending out of the ground, of the exhaust pipeline, and an outlet is formed in the end portion of the heat conduction pipe section. When the heat conduction pipe section is heated, the internal air density is smaller than the internal air density of the exhaust pipeline, so that a heat conduction channel for guiding air to flow is formed in the heat conduction pipe section. Through the heat conduction pipe section on the ground, after the heat conduction pipe section is heated, the heated density of air in the heat conduction pipe section is reduced due to heat conduction of the pipe wall, and upward flowing airflow is formed in the exhaust pipeline, so that toxic and harmful gas in the drainage inspection well is actively discharged, and the toxic and harmful gas is prevented from being gathered in the drainage inspection well; therefore, the purpose of improving the exhaust efficiency of the exhaust pipe of the existing drainage inspection well is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of drainage inspection well exhaust, in particular to a drainage inspection well exhaust device. Background Art

[0002] At present, the common method for discharging toxic and harmful gases in drainage inspection wells is to guide the gas in the well chamber to the outside of the well chamber for discharge through exhaust and ventilation pipes. However, drainage inspection wells often have only one exhaust outlet and are unable to actively discharge air, so they cannot be actively discharged, resulting in the accumulation of toxic and harmful gases in the well chamber. Occasionally, the wind will bring the gas out, but the accumulated gas has a strong smell, which will seriously affect the daily life of the surrounding people. If a fan is used to extract the gas, on the one hand, the fan needs to be repaired, and on the other hand, the volume of gas in the well is limited. Using a fan will result in a huge waste of energy and will not have a good economic effect. In addition, there will be problems with the power supply of the fan and there is a risk of leakage. Utility Model Content

[0003] The utility model aims to provide an exhaust device which can actively exhaust toxic and harmful gases in a drainage inspection well chamber.

[0004] To this end, the utility model adopts the following technical solutions:

[0005] A drainage inspection well exhaust device, an exhaust pipe is connected to the exhaust port of the drainage inspection well chamber, a heat conduction pipe section is arranged on the side of the exhaust pipe extending out of the ground, an outlet is arranged on the end of the heat conduction pipe section, and the air density inside the heat conduction pipe section is less than the air density inside the exhaust pipe when heated, so that a heat conduction channel for gas guiding flow is formed inside the heat conduction pipe section.

[0006] Furthermore: a heating device or a light absorbing structure may be arranged outside the heat conduction pipe section.

[0007] Furthermore: the light absorbing structure is a heat conducting coating provided on the outer surface of the heat conducting pipe segment.

[0008] Furthermore: the drainage inspection well is provided with a well cover and a well seat on the road surface layer, and a manhole connected to the well cover and the well seat is arranged in the drainage inspection well.

[0009] Furthermore: the exhaust duct is provided with a bent guide pipe section between the exhaust port and the ground.

[0010] Furthermore: an elbow is provided at the end of the heat transfer pipe section so that the outlet of the heat transfer pipe section faces the ground.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model uses the heat conduction pipe section on the ground. After the heat conduction pipe section is heated, the heat density of the air inside it is reduced due to the heat conduction of the pipe wall, and an upward airflow is formed in the exhaust pipe, thereby actively exhausting the toxic and harmful gases in the drainage inspection well, avoiding the accumulation of toxic and harmful gases in the drainage inspection well, thereby achieving and improving the exhaust efficiency of the existing drainage inspection well exhaust pipe. It also solves the problems of energy waste, maintenance, possible leakage and unsafe conditions faced by mechanical extraction, and achieves the purpose of light heating and temperature increase through the heat conduction coating on the surface of the heat conduction pipe section, so that the exhaust device has zero energy consumption, is simple to operate and easy to implement in actual projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a plan view of the utility model;

[0014] Figure 2 For this utility model Figure 1 Cross-section of the middle AA;

[0015] Figure 3 For this utility model Figure 1 Cross-section of the BB.

[0016] The markings in the attached drawings are: 1-drainage inspection well chamber; 11-exhaust port; 2-exhaust pipe; 21-bend guide pipe section; 3-heat conduction pipe section; 31-elbow section; 4-well cover and well seat; 41-passageway. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0018] like Figure 1-3 As shown, an exhaust device for a drainage inspection well is provided, wherein an exhaust pipe 2 is connected to an exhaust port 11 of a drainage inspection well chamber 1, a heat conduction pipe section 3 is arranged on the side of the exhaust pipe 2 extending out of the ground, an outlet is arranged on the end of the heat conduction pipe section 3, and when heated, the internal air density of the heat conduction pipe section 3 is less than the internal air density of the exhaust pipe 2, so that a heat conduction channel for gas guiding flow is formed inside the heat conduction pipe section 3.

[0019] In this embodiment, a heating device (not shown in the figure) or a light absorbing structure may be provided outside the heat transfer pipe section 3 .

[0020] The heat transfer pipe section 3 preferably adopts a light absorbing structure so that no additional energy is consumed when actively discharging the gas in the drainage inspection well chamber 1; and there will be no corresponding maintenance, energy consumption, or leakage problems. The light absorbing structure is a heat transfer coating provided on the outer surface of the heat transfer pipe section 3.

[0021] At the same time, when the heat conductive coating is used for corresponding construction work, the existing exhaust pipe 2 of the drainage inspection well can be directly improved to reduce the construction cost, and the surface of the exposed part on the ground can be covered by the heat conductive coating.

[0022] In this embodiment, the exhaust pipe 2 can be made of white PVC material; and correspondingly, the heat conductive coating is a black paint applied on the surface of the pipe or a black material is used to tightly cover it, so that the coated area of ​​the pipe section absorbs heat and heats up under sunlight.

[0023] Specifically, the drainage inspection well is provided with a well cover and a well seat 4 on the road surface layer 5 , and a manhole 41 connected to the well cover and the well seat 4 is arranged in the drainage inspection well chamber 1 .

[0024] Specifically, the exhaust pipe 2 is provided with a bent guide pipe section 21 between the exhaust port 11 and the ground to prevent the heat conduction pipe section 3 from being directly led out on the road surface layer 5 to affect road traffic and road environment.

[0025] Specifically, an elbow 31 is provided at the end of the heat transfer pipe section 3 so that the outlet of the heat transfer pipe section 3 faces the ground.

[0026] See also Figure 1-3 When the exhaust device of the drainage inspection well is operating, the specific contents are as follows:

[0027] First: install the exhaust pipe 2 on the exhaust port 11 at the top of the drainage inspection well chamber 1 according to the existing drainage inspection well exhaust pipe method;

[0028] Secondly: paint the surface of the heat conduction pipe section 3 of the exhaust pipe 2 exposed to the ground with black paint or directly cover it with black material; therefore, under the sunlight on a sunny day, the air inside the heat conduction pipe section 3 is heated by the heat conduction of the pipe wall, and the heat density is reduced, and an upward airflow is actively formed in the exhaust pipe 2, thereby discharging the dirty gas in the drainage inspection well chamber 1, thereby achieving the purpose of zero-energy discharge of toxic and harmful gases in the well, so that the air in the well has a way to convect with the outside of the well, so as to solve the problem of excessive accumulation of flammable, explosive and toxic gases in the well, and reduce the safety risks of maintenance personnel when going down the well.

[0029] The above embodiment is only a preferred technical solution of the present invention. Those skilled in the art should understand that the technical solutions or parameters in the embodiments can be modified or replaced without departing from the principle and essence of the present invention, and all should be included in the protection scope of the present invention.

Claims

1. A drainage inspection well exhaust device, wherein an exhaust pipe (2) is connected to an exhaust port (11) of a drainage inspection well chamber (1), characterized in that: The drainage inspection well is provided with a well cover and a well seat (4) on the road surface layer (5); the exhaust pipe (2) is provided with a heat conduction pipe section (3) on the side extending out of the ground; an outlet is provided at the end of the heat conduction pipe section (3); when heated, the air density inside the heat conduction pipe section (3) is less than the air density inside the exhaust pipe (2), so that a heat conduction channel for gas-guiding flow is formed inside the heat conduction pipe section (3).

2. A drainage inspection well exhaust device according to claim 1, characterized in that: A heating device or a light absorbing structure may be arranged outside the heat conduction pipe section (3).

3. A drainage inspection well exhaust device according to claim 2, characterized in that: The light absorbing structure is a heat conducting coating provided on the outer surface of the heat conducting pipe section (3).

4. The drainage inspection well exhaust device according to claim 1, characterized in that: A manhole (41) connected to the well cover and the well seat (4) is arranged in the drainage inspection well chamber (1).

5. The exhaust device for drainage inspection well according to claim 1 is characterized in that: The exhaust pipe (2) is provided with a bent guide pipe section (21) between the exhaust port (11) and the ground.

6. The exhaust device for drainage inspection well according to claim 1, characterized in that: An elbow (31) is provided at the end of the heat transfer pipe section (3) so that the outlet of the heat transfer pipe section (3) faces the ground.

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