All-underground substation engineering ventilation device

Abstract

The utility model belongs to the technical field of power transmission and transformation project supporting facilities, and particularly provides an all-underground transformer substation project ventilation device capable of automatically switching fire-fighting smoke exhaust and equipment heat dissipation, which comprises a cabinet type double-speed centrifugal fan provided with two inlets and an outlet; wherein one inlet is provided with an exhaust air pipe, and the other inlet is connected with a smoke exhaust air pipe; the outlet is connected with a main exhaust pipe; the exhaust air pipe extends outwards to be connected with all the equipment rooms and communicates with the exhaust outlets of the multiple equipment rooms. The smoke exhaust air pipe is communicated with each smoke prevention subarea; each smoke-proof subarea is provided with a smoke exhaust valve and a smoke exhaust port; the main exhaust pipe is connected to the outlet through an air pipe reducer pipe; the main exhaust pipe is sequentially provided with an air pipe check valve and a smoke connection fireproof valve. And the tail end of the main exhaust pipe is communicated with the exhaust shaft. The underground transformer substation has the advantages that a smoke exhaust system and a ventilation system of the underground transformer substation are used together, ventilation is carried out at ordinary times, smoke exhaust is carried out in fire disasters, and air exhaust is carried out after disasters, so that the safety of the underground transformer substation is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of power transmission and transformation engineering supporting facilities, and specifically provides a combined full-underground substation engineering ventilation device of automatic switching of fire-fighting smoke exhaust and equipment heat dissipation. BACKGROUND

[0002] The substation is the core component of the power system and bears the important responsibility of transforming and transmitting electric energy. In the full-underground substation, the heat dissipation of the main electrical equipment is large when the equipment is running, and the operating environment temperature of most equipment is not allowed to exceed 40 degrees Celsius. However, due to the limited land acquisition, the internal space of the equipment room is small, and most of the layouts of the full-underground substation are compact arrangements under the condition of meeting the requirement of the closest live distance of the electrical equipment. This will limit the flow of air, and thus cause the accumulation of heat of the equipment, affecting the stable operation of the substation and the reliability of the equipment, so the calculated heat dissipation ventilation air volume is large. The traditional substation heat dissipation system mostly uses a fixed-frequency fan or a mechanical valve to regulate the air volume, which has three shortcomings of still operating at full power under low load, slow response of the mechanical valve adjustment, inability to match the equipment temperature rise demand in real time, lack of real-time monitoring and early warning of the operation state of the fan, and easy heat dissipation failure due to equipment abnormalities.

[0003] At the same time, according to the relevant requirements of the Building Design Fire Protection Code GB50016, smoke exhaust devices should be arranged in most equipment rooms and corridors, and according to the relevant requirements of the Building Smoke Exhaust System Technical Standard GB51251, such smoke exhaust fans should also be arranged in separate machine rooms. Obviously, in order to meet the requirements of heat dissipation ventilation and smoke exhaust respectively, there are many auxiliary facilities, and the building area occupied is large. Combining the two ventilation facilities is obviously in line with the relevant requirements and policies of the current industrial building energy saving and emission reduction. CONTENT OF THE UTILITY MODEL

[0004] To solve the above technical problems, the utility model provides a full-underground substation engineering ventilation device, comprising,

[0005] The cabinet type double-speed centrifugal fan 1 is provided with two inlets and one outlet; one inlet is provided with an exhaust air duct 10, and the other inlet is connected with a smoke exhaust duct 3; and the outlet is connected with a total exhaust duct.

[0006] The exhaust air duct 10 extends outward to connect each equipment room and communicate with the exhaust ports of the plurality of equipment rooms.

[0007] The smoke exhaust duct 3 communicates with each smoke-proof partition; each smoke-proof partition is provided with a smoke exhaust valve and a smoke exhaust port.

[0008] The total exhaust pipe is connected to the outlet through a pipe reducing pipe 8; a pipe check valve 4 and a smoke interconnection fire valve 5 are sequentially arranged on the total exhaust pipe; and the tail end of the total exhaust pipe is communicated with the exhaust shaft.

[0009] Further, a fan control box 7 and a fire alarm system are further included; the fire alarm system includes a plurality of fire detectors which are arranged in each equipment room of the substation respectively, and are used for transmitting detection signals to the fan control box 7; the fan control box 7 controls the cabinet type double-speed centrifugal fan 1 to switch gears to the high-speed gear to enter the fire exhaust mode, and controls the linkage to open all smoke exhaust valves and smoke exhaust openings of the corresponding smoke partition within 15s, and automatically closes other air valves and air openings outside the smoke partition within 30s.

[0010] Further, the smoke interconnection fire valve 5 and the smoke exhaust opening in the mechanical smoke exhaust system have the function of being automatically opened by the detector signal in the linkage fire automatic alarm system, that is, the fire detector alarm detection signal transmits a remote signal to the smoke interconnection fire valve 5 and the smoke exhaust opening to open or the fire control room manual opening function, and the opening signal transmits a remote signal to the remote interface of the cabinet type double-speed centrifugal fan 1 to realize linkage remote control.

[0011] Further, a static pressure box 2 is arranged on the outer periphery of the cabinet type double-speed centrifugal fan 1.

[0012] Further, a silencer 6 is arranged at the inlet of the exhaust air pipe 10.

[0013] Further, a temperature sensor is arranged in the indoor environment, and an electric air volume regulating valve 9 is arranged on the temperature sensor and the exhaust air pipe; the temperature sensor and the electric air volume regulating valve 9 are signal connected, and the ventilation volume is controlled and adjusted according to the detected indoor environment temperature.

[0014] The advantage of the utility model lies in that the smoke exhaust system and the ventilation system of the underground substation are shared, ventilation is operated in normal times, smoke exhaust and post-disaster exhaust are operated in case of fire, and the safety of the underground substation is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structural diagram of the utility model. DETAILED DESCRIPTION

[0016] The principles and characteristics of the utility model are described below in combination with the drawings, and the examples are only used for explaining the utility model and are not used for limiting the range of the utility model.

[0017] REFERENCE Figure 1 The utility model provides a kind of full underground substation engineering ventilation device, including,

[0018] The cabinet type double-speed centrifugal fan 1 is provided with two inlets and one outlet; one of the inlets is provided with an exhaust air duct 10, and the other inlet is connected with an exhaust smoke duct 3; the outlet is connected with a total exhaust air duct;

[0019] The exhaust air duct 10 extends outward to connect with each equipment room and is communicated with exhaust air inlets of the equipment rooms;

[0020] The exhaust smoke duct 3 is communicated with each smoke prevention partition; each smoke prevention partition is provided with an exhaust smoke valve and an exhaust smoke inlet;

[0021] The total exhaust air duct is connected to the outlet through an air duct reducing pipe 8; the total exhaust air duct is sequentially provided with an air duct check valve 4 and a smoke interconnection fire valve 5; the end of the total exhaust air duct is communicated with an exhaust air shaft.

[0022] Further, the fan control box 7 and the fire alarm system are further included; the fire alarm system includes a plurality of fire detectors arranged in each equipment room of the substation, which are used to transmit detection signals to the fan control box 7, the fan control box 7 controls the cabinet type double-speed centrifugal fan 1 to switch gears to the high-speed gear to enter the fire smoke exhaust mode, and controls the linkage to open all the exhaust smoke valves and exhaust smoke inlets of the corresponding smoke prevention partition within 15 seconds, and automatically closes other air valves and air inlets outside the smoke prevention partition within 30 seconds.

[0023] Further, the smoke interconnection fire valve 5 and the exhaust smoke inlet in the mechanical smoke exhaust system have an automatic opening function of the detector signal in the linkage fire automatic alarm system, that is, the fire detector alarm detection signal transmits a remote signal to the smoke interconnection fire valve 5 and the exhaust smoke inlet to open or the fire control room manual opening function, and the opening signal transmits a remote signal to the remote interface of the cabinet type double-speed centrifugal fan 1 for linkage remote control.

[0024] Further, a static pressure tank 2 is arranged on the outer periphery of the cabinet type double-speed centrifugal fan 1.

[0025] Further, a silencer 6 is arranged at the inlet of the exhaust air duct 10.

[0026] Further, a temperature sensor is arranged in the indoor environment, and an electric air volume regulating valve 9 is arranged on the exhaust air duct and connected with the temperature sensor; the temperature sensor and the electric air volume regulating valve 9 are signal connected, and the ventilation volume is controlled according to the detected indoor environment temperature.

[0027] Its use place is full underground substation project, cabinet type double speed centrifugal fan 1 low speed gear operation, responsible for the ventilation and heat dissipation of electrical equipment room in the station, the air exhaust pipe 10 extends outward to connect each equipment room, check valve 4 prevents gas backflow. The connection part of the total exhaust pipe and the cabinet type double speed centrifugal fan 1 uses the pipe reducing pipe 8 to overlap. In order to avoid excessive noise during daily operation, a static pressure tank 2 is arranged at the upper part of the fan, and a silencer 6 is arranged at the inlet of the air pipe to reduce the noise of the ventilation system. The electric air volume regulating valve 9 can adjust the ventilation volume according to the indoor environment temperature. When the fire is confirmed, the fire alarm system control device transmits a signal to the fan control box 7, and then controls the cabinet type double speed centrifugal fan 1 to switch gear to high speed gear to enter the fire smoke exhaust mode, and opens all smoke exhaust valves and smoke exhaust openings of the corresponding smoke control partition within 15S, and closes other air valves and air openings unrelated to smoke exhaust within 30S. The smoke exhaust fire valve 5 and the smoke exhaust opening in the mechanical smoke exhaust system have the functions of being automatically opened by the automatic fire alarm system or manually opened by the fire control room, and the opening signal is linked with the cabinet type double speed centrifugal fan 1.

[0028] In the daily heat dissipation and ventilation state, the ventilation system is provided with an intelligent auxiliary control linkage function, the temperature and humidity of indoor and outdoor air are monitored in real time through temperature and humidity sensors, the sensors and monitors are arranged at a distance of greater than or equal to 1 meter from the heating equipment in the equipment area, to avoid local heat radiation interference and to be away from doors and windows and other air flows, and to maintain a distance of greater than or equal to 3 meters from the mechanical air inlet, to prevent air flow short circuit. The sensor signal processing adopts a communication protocol standard interface, a conventional mode is to upload data once per second, and the drive module built in the fan is connected. When the indoor temperature is greater than 35 DEG C, mechanical ventilation is started, and when the indoor temperature is reduced to below 32 DEG C, the linkage stops the fan operation, when the indoor temperature is greater than 70% RH, the dehumidification and ventilation function is started, and when the indoor temperature is reduced to below 60% RH, the linkage stops the fan operation. The intelligent system ensures that the indoor environment meets the equipment operation and personnel comfort, and makes the ventilation equipment run efficiently, reduces the use energy consumption, and saves the maintenance cost.

[0029] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An all-underground substation engineering ventilation device, characterized by, The utility model relates to a mechanical smoke exhaust system of a cabinet type double-speed centrifugal fan (1) and a fire alarm system, and belongs to the field of fire safety. The cabinet type double-speed centrifugal fan (1) is provided with two inlets and one outlet; one of the inlets is provided with an exhaust air duct (10), and the other inlet is connected with a smoke exhaust duct (3); the outlet is connected with a total exhaust air duct; The exhaust air duct (10) extends outward to connect with each equipment room and is connected with the exhaust air outlets of the equipment rooms; The smoke exhaust duct (3) is connected with each smoke prevention partition; each smoke prevention partition is provided with a smoke exhaust valve and a smoke exhaust outlet; The total exhaust air duct is connected with the outlet through a duct reducer (8); the total exhaust air duct is sequentially provided with a duct check valve (4) and a smoke interconnection fire damper (5); the end of the total exhaust air duct is connected with an exhaust air shaft.

2. An all-underground substation engineering ventilation device according to claim 1, characterized in that, The system further comprises a fan control box (7) and a fire alarm system; the fire alarm system comprises a plurality of fire detectors arranged in each equipment room of the substation, which are used to transmit detection signals to the fan control box (7); the fan control box (7) controls the cabinet type double-speed centrifugal fan (1) to switch gears to the high-speed gear to enter the fire smoke exhaust mode, and controls the smoke exhaust valves and smoke exhaust outlets of the corresponding smoke prevention partition to be opened in linkage within 15 seconds and the other valves and air outlets outside the smoke prevention partition to be automatically closed within 30 seconds.

3. An all-underground substation engineering ventilation device according to claim 1, characterized in that, The smoke interconnection fire damper (5) and the smoke exhaust outlet of the mechanical smoke exhaust system are automatically opened by the detector signals of the automatic fire alarm system, i.e., the fire detector alarm detection signals transmit remote signals to the smoke interconnection fire damper (5) and the smoke exhaust outlet to be opened or manually opened in the fire control room; the opening signals transmit remote signals to the remote interface of the cabinet type double-speed centrifugal fan (1) to be remotely controlled.

4. An all-underground substation engineering ventilation device according to claim 1, characterized in that, A static pressure tank (2) is arranged outside the cabinet type double-speed centrifugal fan (1).

5. An all-underground substation engineering ventilation device according to claim 1, characterized in that, A silencer (6) is arranged at the inlet of the exhaust air duct (10).

6. An all-underground substation engineering ventilation device according to claim 1, characterized in that, A temperature sensor is arranged in the indoor environment; an electric air volume regulating valve (9) is arranged on the exhaust air duct at the temperature sensor and the electric air volume regulating valve (9); the temperature sensor and the electric air volume regulating valve (9) are signal connected; the ventilation volume is controlled and adjusted according to the detected indoor environment temperature.

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