Electrical installation construction scheme of a residential quarter in Fujian
2.1 Brief Description of Construction Project The reconstruction and expansion project of Fujian * * * Villa is located at the most beautiful * * * stream bank in * * * Fujian. The Villa is built along the mountains and with water. It has a strong "Licheng" water town and Southeast Asian style. It is known as the "city" of Putian and even Fujian, and is the best choice for leisure, vacation and business meetings. The hotel has a superior geographical location and convenient transportation. It is adjacent to the * * * municipal government, less than 10 minutes' drive from the * * * shopping center, and only half an hour's drive from Meizhou Island, the pilgrimage site of "Mazu", as well as South Shaolin, the birthplace of southern Chinese martial arts. It has both the prosperity of the city and the convenience of tourism. After the completion of all the projects, it will be the only hot spring in Fujian Province and even in the western part of the sea that integrates water friendly vacations, half mountain villas, conference centers, outdoor hot springs and other large-scale supporting hot springs? on vacation? Conference hotel. Fujian * * * Villa Reconstruction and Expansion Project is divided into three areas, namely, A, B and C. The total building area is 69022m2 and the building height is 23.95m, which is a multi-storey building. Area A, with a total building area of 37878m2, has 7 floors in total, 6 floors above the ground and 1 floor below the ground, with a building height of 23.65m. Its main functions are: locally, the second floor is for equipment, the first floor is for sauna, the first floor is for lobby, boutique, hair salon, meeting room and western restaurant, and the second to sixth floors are for guest rooms. In Zone B, the building area is 30927m2 and the building height is 19.8m. There are five floors in total, and the main functions are: the first floor is the garage and KTV room, the first floor is the garage and KTV room, the second floor is the conference room and Chinese restaurant, the third to fourth floors are the conference hall, conference hall auxiliary rooms, Chinese food rooms, and the roof layer is equipped with a boiler room. Zone C is the second phase project, which is proposed to be built on the fifth floor and mainly serves as guest rooms. 2.1.1 Basic Introduction Table 2.1.1-1 Basic Introduction No. Project Content 1 Project Name Fujian * * * Shanzhuang Phase II Expansion A The construction site of Fujian * * * Villa Hotel Management Co., Ltd. 3, the construction unit of Zone B indoor electromechanical and fire protection works 2, 4 design units 5, Putian City, Fujian Province, requires a construction period of 150 calendar days. The main project milestone should be completed within 85 calendar days. 2. The bid winner shall sign a construction contract with the Tenderee within 5 days after receiving the letter of acceptance. 3. The construction management team and applied machinery shall enter the site within 4 days after the contract is signed. 4. Starting time of construction period: starting from the 7th day after signing the construction contract. 6. The quality standard shall meet the qualification standard of Code for Acceptance of Engineering Construction Quality. 2.1.2 Overview of electrical engineering This project is a five-star hotel and conference center, which uses two independent 10kV power supplies. Two 10kV power cables are introduced from the urban power grid, and are buried in pipes and led into the high-voltage incoming switch cabinet of the high-voltage distribution room of the project. Lighting power for banquet halls, restaurants, kitchens, recreational facilities, foyers, senior guest rooms, main passages and other places, kitchen, sewage pump, domestic water pump, power for main passenger elevators, weak current system, fire fighting equipment, emergency lighting, etc. are Class I loads. Among them, the power load of the computer system used for the operation and equipment management of hotels and restaurants is super grade. Other electric equipment except facade, advertisement and landscape lighting are secondary loads. Table 2.1.2-1 List of Electrical Engineering Overview Item No. The electrical system power transformation and distribution system 10/0.4KV power transformation and distribution system is designed to be a class I load, which is powered by two independent 10KV circuits at the same time, one of which is a standby power supply, the other is an electric diesel engine as the emergency power supply, and the rest of the weak motor rooms are equipped with UPS as the standby power supply. High voltage distribution room, transformer room, low voltage distribution room and generator room are all located in the basement on the first floor of Zone A. The high voltage cabinet is connected to the municipal power supply system by flame-retardant cable through the cable shaft. The transformer is connected to the high voltage cabinet, and the low voltage cabinet is connected to the transformer by dense copper bus. The lightning protection and grounding system shall be protected according to Class II lightning protection buildings. A lightning arrester made of round steel shall be set on the top floor and led down through the main reinforcement in the concrete. The foundation reinforcement mesh is used as the common grounding electrode for lightning protection grounding and electrical system grounding protection. The high and low voltage sides of the transformer shall be equipped with lightning arresters. The important distribution box is equipped with surge protector and effectively connected with the lightning protection grounding device. Overvoltage protection devices shall be set at the cable TV system lead-in end, telephone lead-in end, optical fiber lead-in end, etc. Flat steel shall be reserved at several columns in the power distribution room and welded with the grounding embedded parts as the grounding protection wire. The power system of the power distribution system consists of the low-voltage distribution cabinet and the power distribution box on the branch circuit. The distribution voltage is AC 380/220V, and TN-S mode is adopted for grounding. Important equipment, such as fire electrical equipment, information network equipment, fire center, hall lighting, main passenger elevators, etc., are powered by dual circuit special cables, while other electrical equipment are powered by radial or trunk power supply, and cables are laid to each equipment along the trough galvanized bridge. The lighting system of the lighting and control system is divided into general lighting and emergency lighting. The outdoor lighting and the lighting socket of the part requiring secondary decoration are not included in the construction scope. The corridor lamp in the guest room shall be connected to the emergency lighting power box, and the intelligent lighting control system shall be used for centralized control and the dual control switch in the guest room for control. Intelligent lighting control system shall be adopted for underground garage, recreation and leisure center, hall, large conference (banquet hall), lobby, guest room corridor, outdoor and other lighting places as required. Intelligent programmable dimming system is adopted for the lighting system of lobby, restaurant and banquet hall. Emergency lighting must be set for the evacuation lighting system, fire pump room, fire fan room, substation (distribution room), network communication equipment room, fire control center and other important places. Evacuation lighting shall be set in the entrance hall, banquet hall, large restaurant, KTV and other evacuation areas with dense flow of people and underground evacuation areas. In addition to the evacuation corridor lighting, the above places shall be equipped with emergency exit signs and evacuation instructions at each emergency exit and evacuation corridor. The evacuation lighting system will give voice prompt in case of fire, and the duration of emergency lighting shall not be less than 30 minutes. The leakage fire system of fire monitoring system and automatic fire alarm system sends audible and visual signal alarm, accurately reports the address of fault line and monitors the change of fault point by detecting leakage current, overcurrent and other signals. The system is linked with the automatic fire alarm system to realize the function of fire linkage to cut off non fire power supply. The protection level of the automatic fire alarm system of the Project is Level I, which is controlled and displayed by the fire control center located on the second floor of Zone B. In case of a fire, the on-site loudspeaker will be switched to the fire accident broadcast state in the fire center, and the elevator control part will forcibly lower the elevator to the first floor, cut off all non fire power, and at the same time enable the emergency lighting system. When the smoke sensor detects the smoke, the rolling shutter door drops. After the temperature sensing detection exceeds the temperature, the roller shutter drops to the bottom. After the pressure switch in the water pump room gives an alarm, start the spray pump to spray the fire part, and sense the water flow direction through the signal sent by the water flow indicator. The public emergency broadcasting system shares a set of systems for fire protection and public broadcasting. The normal state is public broadcasting. In case of fire, it can be automatically/manually switched to fire broadcasting. In the fire alarm emergency state, the fire trigger signal is input to the central controller through the digital control fire intelligent interface, and the system automatically switches the corresponding channel of the audio matrix according to the preset fire mode, and outputs the short circuit signal to trigger the alarm signal generator, and sends out the alarm voice to each area. The other circuit is input to the alarm matrix, and the power supply is forced to be switched according to the preset mode, and the DC voltage is automatically output to the voice controller on each layer. Equipment monitoring system (BAS) The system monitors the cold/hot water machine system, air conditioning system, air supply and exhaust system, water supply and drainage system, high and low voltage power distribution system, elevator system in real time through the sensor at the end of Ethernet through the high-performance computer set in the monitoring center, and controls and manages the equipment through the DDC controller The lighting system is seamlessly connected. 2.1.3 Main physical quantities See Table 2.1.3-1 below for main physical quantities. Table 2.1.3-1 Main Physical Quantities No. Equipment and Materials Name Specification Model Unit Quantity Remark 1 Distribution box/control box platform 276 2 Cable meters 27083 3 Galvanized steel pipe meters 15280 4 Bridge and trunking meters 5774 5 Various wires meters 69406 6 Various lamp sets 1650
