CN218598234U - Ventilation system of underground pumped storage power station tunnel with one-end tunnel room - Google Patents
Ventilation system of underground pumped storage power station tunnel with one-end tunnel room Download PDFInfo
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- CN218598234U CN218598234U CN202223283291.9U CN202223283291U CN218598234U CN 218598234 U CN218598234 U CN 218598234U CN 202223283291 U CN202223283291 U CN 202223283291U CN 218598234 U CN218598234 U CN 218598234U
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Abstract
The utility model discloses a ventilation system of underground pumped storage power station tunnel with single-end tunnel room, the top in pumped storage power station single-end tunnel is provided with the single-end tunnel room, the single-end tunnel end is the blind end, the main pipeline of supplying air inserts and sends into the position apart from the single-end tunnel room certain distance along single-end tunnel top inner wall from the single-end tunnel entry of underground pumped storage power station, top be provided with in the single-end tunnel room with the communicating blast pipe in the single-end tunnel room outside, bottom is provided with and the communicating exhaust pipe in the single-end tunnel room outside, be provided with indoor forced draught blower and supply-air outlet on the blast pipe, be provided with exhaust fan and air exit on the exhaust pipe, install total forced draught blower on the main pipeline of single-end tunnel entrance. Rooms in the single-head tunnel and the tunnel adopt different forms of ventilation pipelines and different sizes of ventilation volumes, and the problem that the air speed and the air volume cannot meet the requirements in a single ventilation mode is solved by flexibly applying two ventilation modes.
Description
Technical Field
The utility model relates to a pumped storage power station ventilation engineering technical field especially relates to a ventilation system of underground pumped storage power station tunnel with single tunnel room.
Background
In the existing pumped storage power station engineering, underground cavities have some single-headed tunnels, and rooms are arranged in some single-headed tunnels. In order to meet the requirements of regulations and personnel hygiene and to maintain a good air environment in the single-ended tunnel and the rooms inside the tunnel, a reasonable ventilation system is required.
In the design process of the ventilation system, different design principles are referred to for the single-head tunnel and the rooms in the tunnel. Specified in hydropower plant heating, ventilation and air conditioning design Specification NB/T35040-2014-Table 3.1.2: the wind speed of the working area of the patrol corridor is 0.3-3.0m/s. The ventilation design process of the single-head tunnel can refer to the wind speed of the working area of the routing inspection gallery, and the ventilation volume is the product of the area of the section of the single-head tunnel and the wind speed of the section. The ventilation volume inside the room is generally determined according to the personnel hygiene requirements or the number of air changes. Therefore, the ventilation volume of the room in the one-head tunnel is different values. If the rooms in the single-head tunnel adopt the integral ventilation system, if the ventilation volume is calculated according to the design requirements of the rooms in the tunnel, the air volume is smaller; and if the air supply quantity is calculated according to the section air speed of the tunnel, the designed air quantity in the terminal room does not meet the requirement. Therefore, the ventilation of the rooms in the one-head tunnel should be considered separately in the design process. The design mode which can meet the ventilation requirement of the single-end tunnel of the underground pumped storage power station and the ventilation requirement of rooms in the tunnel is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a ventilation system of underground pumped storage power station tunnel with one-end tunnel room is provided, can satisfy the requirement of underground pumped storage power station one-end tunnel ventilation, can satisfy the design that room ventilation required in the tunnel again to satisfy the on-the-spot operation requirement of engineering.
In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a ventilation system of underground pumped storage power station tunnel with single-end tunnel room, the top in pumped storage power station single-end tunnel is provided with the single-end tunnel room, the single-end tunnel end is the blind end, the main pipeline of air supply inserts and sends into the position apart from single-end tunnel room certain distance along single-end tunnel top inner wall from the access of underground pumped storage power station single-end tunnel room, top be provided with in the single-end tunnel room with the communicating blast pipe in the single-end tunnel room outside, bottom be provided with in the single-end tunnel room with the communicating exhaust pipe in the single-end tunnel room outside, be provided with indoor forced draught blower and blast outlet on the blast pipe, be provided with exhaust fan and air exit on the exhaust pipe, install total forced draught blower entrance on the main pipeline of air supply of single-end tunnel.
The distance between the air outlet of the air supply main pipeline and the room of the single-head tunnel is 30-60m.
The one-head tunnel room is a plurality of independent rooms connected in series, the air supply pipe sequentially extends into each room, each room is provided with an air supply outlet, the air exhaust pipe sequentially extends into each room, and each room is provided with an air exhaust outlet.
In the room at the innermost side of the tunnel, the air outlet is positioned at the innermost end of the room, and the air supply outlet is positioned at the inlet of the room, so that the air supply outlet and the air outlet are separated by the farthest distance.
The air supply main pipeline is a fabric air distribution pipe, the cross section of the air supply main pipeline is circular, the suspended ceiling is arranged, the air supply pipe is made of a color steel plate, the cross section of the air supply main pipeline is rectangular, and the suspended ceiling is arranged.
The total air feeder is an axial flow fan with large air volume and large air pressure.
The indoor air feeder and the exhaust fan are axial flow fans with the same model, so that the same indoor and outdoor pressure difference is ensured.
The air supply outlet and the air exhaust outlet in each room are arranged in a staggered manner, so that short circuit of air supply and air exhaust in the room is avoided.
The beneficial effects of the utility model are that:
(1) Rooms adopt different forms of ventilation pipe and not the air volume of equidimension in the single tunnel of underground pumped storage power station and tunnel, can satisfy the ventilation requirement of single tunnel, can satisfy the ventilation requirement of room in the tunnel again, and the problem that single ventilation mode wind speed and amount of wind can not satisfy the requirement has been solved in the nimble application of two kinds of ventilation modes.
(2) In the tunnel of the underground pumped storage power station, the circular fabric air distribution pipe is used, and the air pipe of the type has the characteristics of lightness, flexibility and the like, so that the arrangement in the tunnel is more flexible, and the field installation and the use are convenient.
(3) The distance of 30-60m is kept between the tail end of a main air supply pipe of the single-head tunnel of the underground pumped storage power station and an internal room, a steady flow section is formed, the air speed at the tail end of an air supply pipeline can be reduced, and the steady flow section can play a pressure relief role, so that strong blowing sense of people near a room door is avoided.
Drawings
Figure 1 is the structural schematic diagram of the ventilation system of the underground pumped storage power station tunnel with the single-headed tunnel room of the utility model.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like, are to be interpreted broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the utility model discloses a ventilation system of underground pumped storage power station tunnel with one-head tunnel room, the top at pumped storage power station one-head tunnel is provided with one-head tunnel room, the one-head tunnel end is the blind end, air supply main pipe 1 inserts and sends into the position apart from 3 certain distances in one-head tunnel room from 2 entries of underground pumped storage power station one-head tunnel and along one-head tunnel top inner wall, top is provided with and communicates with each other in 3 outsides in one- head tunnel room 3, 3 interior bottoms of one-head tunnel room are provided with and communicate with each other in 3 outsides in one-head tunnel room 5, be provided with indoor forced draught blower 6 and supply-air outlet 7 on the supply-air pipe 4, be provided with exhaust fan 8 and exhaust outlet 9 on exhaust pipe 5, install main forced draught blower 10 on the main air supply pipe 1 of one-head tunnel entrance.
The distance between the air outlet of the air supply main pipeline 1 and the single-head tunnel room 3 is 30-60m.
The single-head tunnel room 3 is a plurality of independent rooms connected in series, the air supply pipe 4 sequentially extends into each room, each room is provided with an air supply opening 7, the exhaust pipe 5 sequentially extends into each room, and each room is provided with an air exhaust opening 9.
In the room at the innermost side of the tunnel, the air outlet 9 is positioned at the innermost end of the room, and the air supply outlet 7 is positioned at the inlet of the room, so that the air supply outlet 7 and the air outlet 9 are farthest away from each other.
The air supply main pipeline 1 is a fabric air distribution pipe, the cross section of the air distribution main pipeline is circular, the suspended ceiling is arranged, the air supply pipe 4 is made of a color steel plate, the cross section of the air supply pipe is rectangular, and the suspended ceiling is arranged.
The main blower 10 is an axial flow fan of a large air volume and large air pressure type.
The indoor air feeder 6 and the exhaust fan 8 are axial flow fans with the same model, and the same indoor and outdoor pressure difference is ensured.
The air supply outlet 7 and the air exhaust outlet 9 in each room are arranged in a staggered mode, and short circuit of air supply and exhaust air flow in the rooms is avoided.
The one-end tunnel 2 is directly connected with other cavities such as a ventilation hole or a traffic hole in the pumped storage power station, the ventilation hole and the traffic hole are directly connected with the outside, and fresh air in the rooms in the one-end tunnel and the tunnel is introduced through the ventilation hole or the traffic hole. The suspended ceiling of the air supply main pipeline 1 is arranged in the single-head tunnel 2, the air supply main pipeline 1 is close to the suspended ceiling of the inlet end of the single-head tunnel 2 and is provided with a total air feeder 10, the total air feeder 10 is utilized for pressurization, fresh air is fed into the single-head tunnel 2 through the air supply main pipeline 1, the distance of 30-60m is reserved between the tail end of the air supply main pipeline 1 and the room 3 of the single-head tunnel, an air flow steady flow section is formed, and high air speed air flow of the air supply main pipeline 1 is subjected to pressure stabilization and speed reduction through the steady flow section. The suspended ceiling sets up blast pipe 4 in the one- head tunnel room 3, and 4 air inlet ends of blast pipe set up indoor forced draught blower 6, set up supply-air outlet 7 in each one-head tunnel room 3, utilize indoor forced draught blower 6 pressurization, send the new trend into in one-head tunnel room 3 respectively through each supply-air outlet 7 on blast pipe 4. The suspended ceiling sets up exhaust pipe 5 in the one-end tunnel room 3, and exhaust pipe 5 end of airing exhaust sets up exhaust fan 8, sets up air exit 9 in each one-end tunnel room 3, utilizes 8 pressurizations of exhaust fan, through each air exit 9 on the exhaust pipe 5 respectively with indoor return air exhaust in one-end tunnel 2. The air flow is finally discharged through the one-head tunnel 2.
The single tunnel in a certain large pumped storage power station engineering of the ventilation system is taken as an example and is further explained by combining the attached drawing:
a diversion tunnel in a built large pumped storage power station project is a single-head tunnel, and a room is arranged at the tail end of the single-head tunnel.
The traffic hole in the one-head tunnel 2 and the pumped storage power station is directly connected, the traffic hole is directly connected with the outside, fresh air in the room in the one-head tunnel and the tunnel is introduced through the traffic hole, and the section area of the one-head tunnel is 45m 2 . The suspended ceiling of the single-head tunnel 2 is provided with an air supply main pipeline 1, the air supply main pipeline 1 is a fabric air distribution pipe, the diameter of the air supply main pipeline is 1250mm, and the tail end of the air supply main pipeline 1 is in an open type. Air supply main pipe 1 is close to 2 entry end furred ceilings in one-head tunnel and sets up total forced draught blower 10, and total forced draught blower 10 is axial fan, and its model is: air volume L =62058m 3 H, wind pressure H =1100Pa, and rotation speed n =960r/min. The main blower 10 is used for pressurizing, fresh air is sent into the single-head tunnel 2 through the main air supply pipeline 1, high-air-speed airflow at the tail end of the main air supply pipeline 1 is subjected to pressure stabilization and speed reduction, and the air speed in front of an inlet of a single-head tunnel room 3 is about 0.4m/s. An air supply pipe 4 is arranged in the single-head tunnel room 3, and the cross section of the air supply pipe 4 is 1000mm multiplied by 320mm. The air inlet end of the blast pipe 4 is provided with an indoor blower 6, the indoor blower 6 is an axial flow fan, and the model number is as follows: air volume L =10168m 3 H, wind pressure H =162.6Pa, and rotating speed n =1450r/min. An air supply outlet 7 is arranged in each one-head tunnel room 3, and fresh air is respectively sent into the one-head tunnel room 3 through each air supply outlet 7 on the air supply pipe 4. An exhaust pipe 5 is arranged on the ceiling in the single-head tunnel room 3, and the size of the exhaust pipe 5 is 1000mm multiplied by 320mm. The end of airing exhaust 5 of exhaust pipe sets up exhaust fan 8, and exhaust fan 8 is axial fan, and its model is: air volume L =10168m 3 H, wind pressure H =162.6Pa, and rotating speed n =1450r/min. The type of the exhaust fan 8 is the same as that of the indoor air feeder 6, so that the air pressure balance in the room is ensured. Each one-end tunnel room 3 is internally provided with an exhaust outlet 9 by utilizing an exhaust fan8, pressurizing and discharging the indoor return air into the single-head tunnel 2 through each air outlet 9 on the exhaust pipe 5. The air flow is finally discharged through the one-head tunnel 2.
The above-mentioned embodiments are only used for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention accordingly, the scope of the present invention should not be limited by the present embodiments, that is, all the equivalent changes or modifications made by the spirit of the present invention should still fall within the scope of the present invention.
Claims (8)
1. The utility model provides a ventilation system of underground pumped storage power station tunnel with one-end tunnel room, the top at pumped storage power station one-end tunnel is provided with one-end tunnel room, one-end tunnel end is the blind end, a serial communication port, air supply main pipe (1) is from the position of one-end tunnel room (3) certain distance of access of underground pumped storage power station one-end tunnel (2) and sending into along one-end tunnel top inner wall, top be provided with in one-end tunnel room (3) with communicating blast pipe (4) in one-end tunnel room (3) outside, bottom be provided with in one-end tunnel room (3) with communicating exhaust pipe (5) in one-end tunnel room (3) outside, be provided with indoor forced draught blower (6) and supply-air outlet (7) on blast pipe (4), be provided with exhaust fan (8) and exhaust outlet entrance (9) on air supply main pipe (1) of one-end tunnel, install main pipe (10) on one-end tunnel's air supply main pipe (1).
2. The ventilation system of the tunnel of the underground pumped storage power station with the single-head tunnel room as claimed in claim 1, wherein the air outlet of the air supply main duct (1) is at a distance of 30-60m from the single-head tunnel room (3).
3. Ventilation system of underground pumped storage power station tunnel with single tunnel room according to claim 1, characterized in that the single tunnel room (3) is a number of independent rooms connected in series, the blast pipe (4) extending into each room in turn and each room being provided with a blast opening (7), the exhaust pipe (5) extending into each room in turn and each room being provided with an exhaust opening (9).
4. Ventilation system of underground pumped storage power station tunnel with tunnel room of one-end type according to claim 1, characterized in that in the innermost room of the tunnel, the air outlet (9) is located at the innermost end of the room and the air supply outlet (7) is located at the room entrance, so that the air supply outlet (7) and the air outlet (9) are at the farthest distance.
5. The ventilation system of the tunnel of the underground pumped storage power station with the single-head tunnel room as claimed in claim 1, wherein the air supply main pipeline (1) is a fabric air distribution pipe with a circular cross section and a ceiling arrangement, the air supply pipe (4) is made of a color steel plate with a rectangular cross section and the ceiling arrangement.
6. Ventilation system of underground pumped storage power plant tunnel with single-ended tunnel room according to claim 1, characterized in that the total blower (10) is an axial fan of the high-air-volume, high-air-pressure type.
7. The ventilation system of a tunnel of an underground pumped-storage power station with a tunnel room of a single-head according to claim 1, characterized in that the indoor blower (6) and the exhaust fan (8) are axial fans of the same type, ensuring the same pressure difference between the inside and the outside of the room.
8. The ventilation system of the tunnel of underground pumped storage power station with the single-headed tunnel room of claim 3, wherein the air supply outlet (7) and the air exhaust outlet (9) in each room are arranged in a staggered manner to avoid short circuit of air supply and exhaust flows in the room.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223283291.9U CN218598234U (en) | 2022-12-07 | 2022-12-07 | Ventilation system of underground pumped storage power station tunnel with one-end tunnel room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223283291.9U CN218598234U (en) | 2022-12-07 | 2022-12-07 | Ventilation system of underground pumped storage power station tunnel with one-end tunnel room |
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| Publication Number | Publication Date |
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| CN218598234U true CN218598234U (en) | 2023-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223283291.9U Active CN218598234U (en) | 2022-12-07 | 2022-12-07 | Ventilation system of underground pumped storage power station tunnel with one-end tunnel room |
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| CN (1) | CN218598234U (en) |
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- 2022-12-07 CN CN202223283291.9U patent/CN218598234U/en active Active
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