Smoke exhaust system of pumped storage power station traffic tunnel
By setting up smoke exhaust passages and pressurized fans on the top of the traffic hole of the pumped storage power station, the problem of difficulty in effectively eliminating smoke in traditional exhaust shafts is solved, and a low-cost and low-intensity smoke exhaust system is realized, which improves the operation safety of the power station. fresh air supply for sexual and evacuation passages.
Patent Information
- Application Number
- CN202323518424.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-22
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2033-12-22
AI Technical Summary
In the existing pumped storage power station smoke exhaust system, the excavation and construction of exhaust shafts is difficult and costly, which makes it impossible for underground factories to effectively eliminate harmful flue gas, affecting safety.
The smoke exhaust system on the top of the traffic hole is adopted. By setting fire-proof partitions on the factory cave room and the top of the traffic hole, pressurized fan and smoke exhaust fan are installed, and the smoke exhaust fan is used to guide the smoke gas in the factory cave room to the top of the traffic hole by connecting pipes, and The high cost and high intensity construction of traditional exhaust shafts are avoided.
It effectively solves the problem of harmful flue gas emissions in underground factories, reduces construction costs and work intensity, improves the operation safety of power stations, and ensures the supply of fresh air in evacuation channels, ensuring the safety of personnel and vehicles.
Smart Images
Figure CN222252942U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of smoke exhaust structures, and in particular relates to a smoke exhaust system for a traffic tunnel of a pumped storage power station. Background Art
[0002] The pumped storage power station plant is an underground plant in the mountain. The plant is responsible for converting water energy into mechanical energy and then converting mechanical energy into electrical energy. In order to ensure the production environment and operation safety of the underground plant, a smoke exhaust system needs to be established.
[0003] Most of the current smoke exhaust systems in pumped storage power plants use exhaust shafts to exhaust smoke, which has the following problems: high difficulty in excavating and constructing the exhaust shafts, high labor intensity, and high cost. Utility Model Content
[0004] In view of the defects in the prior art, the utility model provides a smoke exhaust system for a traffic tunnel of a pumped storage power station, which can effectively solve the above problems.
[0005] The technical solution adopted by the utility model is as follows:
[0006] The utility model provides a smoke exhaust system for a traffic tunnel of a pumped storage power station, comprising a smoke exhaust passage on the top of a powerhouse cavern, a smoke exhaust passage on the top of a traffic tunnel, a connecting pipe, a smoke exhaust fan and a pressurized fan;
[0007] A factory cavern fire partition is set on the top of each factory cavern, thereby dividing the factory cavern into a smoke exhaust passage on the top of the factory cavern located above and a functional space of the factory cavern located below; a traffic tunnel fire partition is set on the top of the traffic tunnel, thereby dividing the traffic tunnel into a smoke exhaust passage on the top of the traffic tunnel located above and an evacuation passage of the traffic tunnel located below; the smoke exhaust passage on the top of the factory cavern is connected with the smoke exhaust passage on the top of the traffic tunnel through the connecting pipe; a plurality of the booster fans are distributedly installed below the factory cavern fire partition and the traffic tunnel fire partition; the smoke exhaust fan is installed at the entrance of the traffic tunnel, the air inlet end of the smoke exhaust fan is connected with the smoke exhaust passage on the top of the traffic tunnel, and the exhaust end of the smoke exhaust fan is connected with the external environment.
[0008] Preferably, the powerhouse cavern includes a main powerhouse, an auxiliary powerhouse, a main transformer tunnel, a tail gate tunnel and a busbar corridor.
[0009] Preferably, the factory cavern fire partition and the traffic tunnel fire partition are both made of concrete fireproof material.
[0010] Preferably, the connecting pipe is a pipe made of fireproof material.
[0011] Preferably, the pressurized blower is equipped with a check valve.
[0012] Preferably, the pressure fan is an axial flow fan.
[0013] The utility model provides a smoke exhaust system for a traffic tunnel of a pumped storage power station, which has the following advantages:
[0014] The utility model can effectively solve the problem that the underground plant cannot effectively exhaust smoke when there is no exhaust shaft or the exhaust is not smooth. It can effectively remove harmful smoke in the underground plant, ensure the safety of vehicles and pedestrians, and improve the safety of power station operation. In addition, the structure of exhausting smoke at the top of the traffic tunnel has the advantages of low construction cost and low work intensity. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A schematic diagram of the arrangement structure of a traffic tunnel in a smoke exhaust system of a traffic tunnel of a pumped storage power station provided by the utility model;
[0016] Figure 2 A schematic diagram of the layout structure of each workshop cavern provided by the utility model;
[0017] Figure 3 The utility model provides a schematic diagram of the ventilation principle of the traffic tunnel. DETAILED DESCRIPTION
[0018] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0019] The utility model provides a smoke exhaust system for a traffic tunnel of a pumped storage power station, comprising a smoke exhaust passage on the top of a powerhouse cavern, a smoke exhaust passage on the top of a traffic tunnel, a connecting pipe, a smoke exhaust fan and a pressurized fan;
[0020] A factory cavern fire partition is set at the top of each factory cavern, thereby dividing the factory cavern into a smoke exhaust passage at the top of the factory cavern and a functional space of the factory cavern below; a traffic tunnel fire partition is set at the top of the traffic tunnel, thereby dividing the traffic tunnel into a smoke exhaust passage at the top of the traffic tunnel and an evacuation passage at the bottom of the traffic tunnel; the smoke exhaust passage at the top of the factory cavern is connected with the smoke exhaust passage at the top of the traffic tunnel through the connecting pipe; a plurality of pressurized fans are installed under the factory cavern fire partition and the traffic tunnel fire partition; the smoke exhaust fan is installed at the entrance of the traffic tunnel, the air inlet end of the smoke exhaust fan is connected with the smoke exhaust passage at the top of the traffic tunnel, and the exhaust end of the smoke exhaust fan is connected with the external environment. Specifically, the smoke exhaust port of the smoke exhaust fan is upward and a smoke exhaust height of 5-10m is reserved to prevent the exhaust smoke from mixing into the inlet fresh air.
[0021] In the utility model, the fireproof partition of the factory cave and the fireproof partition of the traffic tunnel are both made of concrete fireproof material. For example, the main structure of the fireproof partition adopts a 0.25m thick concrete slab. It is constructed together with the traditional lining structure during construction. Steel bars are used as the skeleton structure for fixing, and then the concrete is poured to form an integral part with the lining structure. The connecting pipe is a fireproof material pipe. The pressurized fan is equipped with a check valve, which is normally closed. Therefore, through the cooperation of the fireproof partition and the check valve, smoke can be prevented from invading the evacuation channel below the traffic tunnel, ensuring the safety of personnel in the evacuation channel. The pressurized fan can adopt an axial flow fan, and the smoke exhaust power of the traffic tunnel mainly comes from the pressurized fan. Since the length of the traffic tunnel is 1-2 kilometers, the resistance loss along the way is large. For this reason, it is necessary to set a pressurized fan to increase the wind pressure to effectively overcome the smoke movement resistance in the smoke exhaust channel. The pressurized fan adopts an axial flow fan. Explosion-proof materials and structures are used to avoid damage caused by high temperature in fire.
[0022] like Figure 2 The figure shows the structure of the traffic tunnel, in which 10 is the smoke exhaust passage at the top of the traffic tunnel, 11 is the pressurized fan, 12 is the fire partition of the traffic tunnel, 13 is the smoke exhaust fan, and 14 is the check valve.
[0023] As a specific embodiment, the powerhouse cavern includes the main powerhouse, auxiliary powerhouse, main transformer tunnel, tail gate tunnel and bus corridor. Figure 1 As shown, the top of the main plant is separated into a main plant top exhaust channel 1, which is connected to the top exhaust channel 10 of the traffic tunnel through the first connecting pipe 2; the top of the main transformer tunnel is separated into a main transformer tunnel top exhaust channel 3, which is connected to the top exhaust channel 10 of the traffic tunnel through the second connecting pipe 4; the top of the tail gate tunnel is separated into a tail gate tunnel top exhaust channel 6, which is connected to the top exhaust channel 10 of the traffic tunnel through the third connecting pipe 5; the top of the auxiliary plant is separated into an auxiliary plant top exhaust channel 9, which is connected to the top exhaust channel 10 of the traffic tunnel through the fourth connecting pipe; the top of the bus corridor is separated into a bus corridor top exhaust channel 8, which is connected to the top exhaust channel 10 of the traffic tunnel through the fifth connecting pipe; wherein, in the figure, the fourth connecting pipe and the fifth connecting pipe are internally arranged pipes, and therefore are not shown in the figure. By setting various connecting pipes, the top exhaust channels of the main plant, auxiliary plant, main transformer tunnel, tail gate tunnel and bus corridor are connected to the top exhaust channel 10 of the traffic tunnel. In addition, in order to ensure the smoke exhaust effect of each factory cavern, a pressurized fan 7 is installed on the top of the factory building to transport the corresponding smoke in the factory cavern to the corresponding smoke exhaust channel, and finally transport the smoke to the outside through the smoke exhaust channel 10 on the top of the traffic tunnel.
[0024] Therefore, if Figure 3As shown in the figure, when a fire occurs in the main powerhouse, main transformer tunnel or tail gate tunnel of the underground powerhouse, a large amount of harmful gas will be generated. At this time, the pressurized fan on the top of the traffic tunnel and the smoke exhaust fan at the entrance of the traffic tunnel will be started to exhaust the harmful smoke in the main powerhouse, main transformer tunnel or tail gate tunnel to the outside through the smoke exhaust channel on the top of the traffic tunnel.
[0025] The utility model provides a smoke exhaust system for the traffic tunnel of a pumped storage power station, which changes the traditional smoke exhaust method of the exhaust shaft into a smoke exhaust method through the traffic tunnel. The smoke exhaust path is as follows: the smoke in the functional space of each powerhouse cavern is pumped to the smoke exhaust channel on its top through the adjacent pressurized fan, and then enters the smoke exhaust channel on the top of the traffic tunnel through the connecting pipe, and then is discharged to the outside through the smoke exhaust channel on the top of the traffic tunnel. It has the following advantages:
[0026] (1) Only minor modifications are required to the traffic tunnel and each powerhouse cavern to achieve effective smoke exhaust in the traffic tunnel and each powerhouse cavern;
[0027] (2) The traffic tunnel is divided into a smoke exhaust channel at the top of the traffic tunnel and an evacuation channel of the traffic tunnel through a fireproof partition. The smoke exhaust channel at the top of the traffic tunnel is used for smoke exhaust, and the evacuation channel of the traffic tunnel is used for personnel evacuation. Therefore, the original function of the traffic tunnel to evacuate personnel is not affected. In addition, when the smoke in the evacuation channel of the traffic tunnel is pumped to the smoke exhaust channel at the top of the traffic tunnel by a pressurized fan, a negative pressure is generated in the evacuation channel of the traffic tunnel, which is conducive to the flow of fresh air from the traffic tunnel entrance into the evacuation channel of the traffic tunnel, thereby effectively reducing the harmful smoke in the evacuation channel of the traffic tunnel, and replenishing fresh air in time to ensure the safety of personnel passing through the evacuation channel of the traffic tunnel. By setting up a pressurized fan, the dynamic pressure of the top smoke exhaust channel can be increased to increase the smoke exhaust rate, and the amount of fresh air supplied to the evacuation channel can also be increased. In other words, the pressurized fan can not only effectively exhaust harmful smoke, but also increase the amount of fresh air supplied to the evacuation channel to ensure the safety of personnel.
[0028] In summary, the pressurized fan in the traffic tunnel of the utility model also serves as a source of fresh air power for the traffic tunnel. Generally, when a fire occurs, there are densely packed people and vehicles in the traffic tunnel, and at this time, the ventilation measures of the traffic tunnel and other caverns will remain closed to isolate the air and extinguish the fire. In this case, the oxygen content in the traffic tunnel will decrease, which is not conducive to the safety of personnel. For this reason, the installation of a pressurized fan can effectively ensure that the traffic tunnel is adequately introduced with fresh air, so that the deep part of the evacuation passage is adequately supplied with oxygen.
[0029] (3) The smoke exhaust structure of the traffic tunnel of the utility model has changed the traditional traffic tunnel that is only used as an evacuation channel rather than a smoke exhaust channel. The smoke exhaust channel on the top of the traffic tunnel has changed the traditional lining structure of the upper part of the traffic tunnel. It can make full use of natural rock or use fiberglass or stainless steel smoke exhaust ducts, reduce the use of lining, and reduce the amount of engineering.
[0030] The smoke exhaust in the traffic tunnel is mechanical, which can effectively control the fire according to the fire situation and improve the control flexibility. In addition, the smoke exhaust on the top of the traffic tunnel can effectively improve the utilization rate of the top space of the traffic tunnel.
[0031] (4) Fireproof partitions are set up in the traffic tunnel to ensure that harmful gases are confined to the smoke exhaust channel at the top of the traffic tunnel during the evacuation of personnel and vehicles. A smoke exhaust fan is installed above the exit to allow harmful gases to be discharged smoothly.
[0032] Therefore, this new smoke exhaust system can effectively solve the problem that underground powerhouses cannot effectively exhaust smoke due to the lack of exhaust shafts or poor exhaust conditions. It can effectively remove harmful smoke in underground powerhouses, ensure the safety of vehicles and pedestrians, and improve the safety of power plant operation. In addition, the structure of exhausting smoke at the top of the traffic tunnel has the advantages of low construction cost and low work intensity.
[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be considered as the protection scope of the present invention.
Claims
1. A smoke exhaust system for a traffic tunnel of a pumped storage power station, characterized in that: It includes smoke exhaust passages at the top of the powerhouse cavern, smoke exhaust passages at the top of the traffic tunnel, connecting pipes, smoke exhaust fans and pressurized fans; A factory cavern fire partition is set at the top of each factory cavern, thereby dividing the factory cavern into a smoke exhaust passage at the top of the factory cavern and a functional space of the factory cavern located below; a traffic tunnel fire partition is set at the top of the traffic tunnel, thereby dividing the traffic tunnel into a smoke exhaust passage at the top of the traffic tunnel and an evacuation passage at the bottom of the traffic tunnel; the smoke exhaust passage at the top of the factory cavern is connected with the smoke exhaust passage at the top of the traffic tunnel through the connecting pipe; a plurality of the booster fans are distributed and installed below the factory cavern fire partition and the traffic tunnel fire partition; The smoke exhaust fan is installed at the entrance of the traffic tunnel, the air inlet end of the smoke exhaust fan is connected to the smoke exhaust channel at the top of the traffic tunnel, and the air exhaust end of the smoke exhaust fan is connected to the external environment.
2. A smoke exhaust system for a traffic tunnel of a pumped storage power station according to claim 1, characterized in that: The powerhouse cavern includes a main powerhouse, an auxiliary powerhouse, a main transformer tunnel, a tail gate tunnel and a busbar corridor.
3. The smoke exhaust system of the traffic tunnel of a pumped storage power station according to claim 1, characterized in that: The factory cavern fireproof partition and the traffic tunnel fireproof partition are both made of concrete fireproof material.
4. A smoke exhaust system for a traffic tunnel of a pumped storage power station according to claim 1, characterized in that: The connecting pipe is a fireproof material pipe.
5. The smoke exhaust system of a traffic tunnel of a pumped storage power station according to claim 1, characterized in that: The pressurized fan is equipped with a check valve.
6. The smoke exhaust system of a traffic tunnel of a pumped storage power station according to claim 1, characterized in that: The pressurized fan is an axial flow fan.