Design Description of Fuzhou Jinxi Underground Box Pump Integrated Floating Pump Station Combined Water Tank

Design Description of Underground Box Pump Integrated Floating Pump Station:

1. The underground box pump integrated pump station is mainly composed of a fire water tank, a fire pump room, a fire automatic constant pressure system, a fire pressure boosting and stabilizing system, gas pressure equipment, and a sewage system;

2Underground box pump integrated non floating pump stationStructural form: All adopt steel structural form;

3. Installation form of integrated pump station with buried box pump: adopting a combination of bolt assembly and welding;

4. Location: Underground;

5. Material of water tank and pump room: hot-dip galvanized or stainless steel or composite steel plate or composite metal material;

6. Internal structure and material of the pool: full scaffold structure or portal steel frame structure; Hot dip galvanized steel pipe or composite plastic profile material;

7. Internal structure and material of pump room: portal steel frame structure; The material is hot-dip galvanized I-beam or composite reinforced I-beam; 8. Pump station bearing capacity: 100-450KN/m2;

9. Service life: ≥ 70 years;

10. Anti floating: Verification design in Article 5.4.3 of the Design Code for Foundation and Base; (Optional)

11. Pump station foundation: raft foundation is adopted; 12. Anti leakage and seepage prevention: using EPDM rubber sealing strips;

13. The pump station system includes: fire hydrant pump group and control cabinet, sprinkler pump group and control cabinet, booster and stabilizing pump group and control cabinet, gas pressure system

14. Pool vent pipe: designed according to the pool plan size of 1/102, manufactured in accordance with the requirements of 12S101-95, and in compliance with the requirements of Article 4.3.10 of the Technical Specification for Fire Water Supply and Hydrant Systems;

Design Description of Fuzhou Jinxi Underground Box Pump Integrated Floating Pump Station

15. Overflow pipe and drainage facilities: Design overflow pipes according to twice the inlet diameter and lead them to the collection pit for indirect drainage, in accordance with the requirements of 12S101-95; And comply with the provisions of Article 4.3.9-3 of the Technical Code for Fire Water Supply and Hydrant Systems GB50974-2014 *

16. Vent pipe: DN100 vent pipe is used and led to the collection pit;

17. Water inlet of the pool: Adopting a dual inlet system, with gate valves, backflow preventers, filters, remote control float valves, and installed in the manhole of the pool; The water inlet adopts a * plate inlet with an effective water level of 150m; the diameter is calculated according to GB50974-2014 * 4.3.3 and 4.3.5; The inlet shall be made in accordance with the requirements of 12S101-94;

18. Fire pump room ventilation: 24-hour non powered ventilator is used, in accordance with the provisions of GB50974-2014 * 5.5.9; 19. Fire pump room heating: Install an automatic constant temperature device when the pump room temperature reaches 5 ℃; Complies with the provisions of GB50974-2014 * 5.5.9;

20. Drainage facilities in the pump room: A collection pit is installed in the fire pump room, with an effective volume greater than the output of one sewage pump for 5 minutes, in accordance with the provisions of GB50015-2009 * 4.7.8 of the "Code for Design of Building Water Supply and Drainage"; The flow rate of the sewage pump is calculated based on the large discharge rate and the emptying rate of 100m?/h. The head lifting height, head loss of the pipeline system, and an additional 2m~3m outflow head are also calculated. One is in use and the other is on standby, and it is used simultaneously when the alarm water level is reached, in accordance with GB5001

Design Description of Fuzhou Jinxi Underground Box Pump Integrated Floating Pump Station