A water supply system for rail transit projects under the condition of imperfect external water sources

Abstract

The present invention provides a water supply system for rail transit projects under the condition of imperfect external water sources, including a fire pool, a production and domestic water supply network, a production and domestic water tank, a water intake pipe, a water supply pipe and a booster pump. A number of stations are arranged in sequence along the rail line. Fire pools, production and domestic water supply networks and production and domestic water tanks are provided in each of the stations. The foremost station supplies water into the station through a water intake pipe connected to the municipal water supply network. The stations are connected by water supply pipes, and the water supply pipes are laid overhead along the interval tunnels or bridges. The front station supplies water to the rear station through the water supply pipe. The front end of the water supply pipe is communicated with the production and domestic water tank of the front station, and a booster pump is arranged at the connection of the water supply pipe and the production and domestic water tank. The rear part of the water supply pipe is respectively communicated with the fire pool, the production and domestic water supply network and the production and domestic water tank of the rear station. The present invention realizes the mutual support of water sources of each water supply unit and improves the safety and reliability of water supply.

Description

Technical Field

[0001] The present invention belongs to the technical field of rail transit, and particularly relates to a water supply system for rail transit projects under the condition of imperfect external water sources. Background Art

[0002] The water sources for the production, living and fire-fighting water supply systems of rail transit project stations and sections are usually taken from municipal tap water, and each station and section separately takes water from the nearby municipal water supply pipe network.

[0003] At present, there are two methods for the connection mode of the fire-fighting pipe network in the underground section of rail transit projects. One is to connect the fire-fighting pipe network in the section only with the fire-fighting ring network of one adjacent station, and a complete physical partition is formed between the fire-fighting ring networks of each station. The problem with this method is that the fire-fighting water sources between each station cannot support each other, and the water supply safety and reliability are low.

[0004] The other is that the fire-fighting pipe networks of multiple stations and sections are interconnected, and the water sources support each other to a certain extent between different stations. However, the fire-fighting water pumps of multiple stations are interconnected for water supply, and it is difficult to divide the fire-fighting water supply areas. When taking water from the fire-fighting pipe network in case of fire, the flow direction of the water is uncertain, and thus the position and quantity of the pumps started in the automatic pump starting mode are also uncertain. The control mode is complex, and the reliability of the automatic pump starting function is low. Summary of the Invention

[0005] In view of the technical problems existing in the prior art, the present invention provides a water supply system for rail transit projects under the condition of imperfect external water sources, solves various problems caused by laying long-distance water diversion pipelines outside the stations, and at the same time realizes the mutual support of the water sources of each water supply unit, improving the safety and reliability of the water supply.

[0006] The technical solution adopted by the present invention is: a water supply system for rail transit projects under the condition of imperfect external water sources, including a fire-fighting water tank, a production and living pipe network, a production and living water tank, a water diversion pipe, a water supply pipe and a pressurizing water pump. A number of stations are sequentially arranged along the rail line. Fire-fighting water tanks, production and living pipe networks and production and living water tanks are all arranged in the stations. The foremost station supplies water into the station through a water diversion pipe connected to the municipal pipe network. The stations are connected by water supply pipes, and the water supply pipes are all laid overhead along the interval tunnels or bridges. The front station supplies water to the rear station through the water supply pipe. The front end of the water supply pipe is communicated with the production and living water tank of the front station, and a pressurizing water pump is arranged at the connection of the water supply pipe and the production and living water tank of the front station. The rear part of the water supply pipe is respectively communicated with the fire-fighting water tank, the production and living pipe network and the production and living water tank of the rear station.

[0007] Furthermore, a valve A is arranged at the front end of the water supply pipe, and a valve B is arranged between the water supply pipe and the production and living water tank of the rear station.

[0008] Furthermore, adjacent water supply pipes are connected through a connecting pipe, and a valve C is provided on the connecting pipe.

[0009] Furthermore, the water intake pipe is respectively connected to the fire pool, the production and domestic water supply network, and the production and domestic water tank of the frontmost station.

[0010] Furthermore, a station fire protection ring network is provided in each station. The station fire protection ring network is connected to the fire pool, and a fire pump is provided at the connection between the station fire protection ring network and the fire pool. Two section fire protection pipe networks are led out from one adjacent station fire protection ring network and arranged along the section tunnel. In the other station, the two section fire protection pipe networks are connected into a ring and communicated with the station fire protection ring network in the other station, and a valve D is provided at the connection.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] (1) Multiple stations of the present invention share one water intake pipe, reducing the requirements for the planning and construction of the municipal water supply pipe network for stations along the line, reducing the difficulty of municipal connection and investment. Production and domestic water tanks are provided in each station, increasing the reliability of production and domestic water supply. Pressure pumps are provided in each station, and water is supplied to the rear stations through the water supply pipes. The conveying distance of the water supply pipes is not limited, improving the flexibility of the system. The water supply pipes between different stations are laid along the line tunnel or viaduct, with small engineering quantity, convenient construction, maintenance and repair, low cost, not affected by the construction and repair of municipal roads, and high water supply reliability.

[0013] (2) By setting pressure pumps, connecting pipes, valve A, valve B and valve C, the production and domestic water tank can be connected to the production and domestic water supply networks of two stations at the same time. In case of necessity, the valves can be opened remotely or manually to connect the production and domestic water supply pipes of different stations to achieve mutual water supply support; the valves can be closed remotely or manually to realize emergency repair of pipeline failures.

[0014] (3) Fire pools and fire pumps are provided in each station of the present invention, increasing the reliability of fire water supply. Valves D are provided between the fire water supply pipe networks of different stations and sections. In case of emergency, the valves can be opened remotely or manually to connect the fire protection ring networks of different stations to achieve mutual fire water supply support. Under normal circumstances, the fire water supply pipe networks of different stations are not connected to each other, with clear physical boundaries, no water flow between the fire pipe networks of different stations, clear water flow direction when taking fire water, and simple automatic start-up mode of the fire pump, and the automatic start-up function is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the station water supply according to the embodiment of the present invention;

[0016] Figure 2 Schematic structural diagram of the fire water supply according to an embodiment of the present invention.

[0017] In the figure: 1 - fire pool, 2 - production and domestic water supply network, 3 - production and domestic water tank, 4 - water intake pipe, 5 - municipal water supply network, 6 - water supply pipe, 7 - booster pump, 8 - valve A, 9 - valve B, 10 - valve C, 11 - connecting pipe, 12 - station fire loop network, 13 - fire pump, 14 - section fire water supply network, 15 - valve D. Detailed implementation manners

[0018] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] An embodiment of the present invention provides a water supply system for rail transit projects under the condition of imperfect external water sources. As Figure 1 shown, it includes a fire pool 1, a production and domestic water supply network 2, a production and domestic water tank 3, a water intake pipe 4, a water supply pipe 6, and a booster pump 7. A number of stations are sequentially arranged along the track line. Fire pools 1, production and domestic water supply networks 2, and production and domestic water tanks 3 are all arranged in the stations. The foremost station (Station 1) supplies water into the station through the water intake pipe 4. Specifically, one end of the water intake pipe 4 is connected to the municipal water supply network 5, and the other end is introduced into Station 1 and is respectively communicated with the fire pool 1, the production and domestic water supply network 2, and the production and domestic water tank 3 in Station 1.

[0020] The stations are connected by the water supply pipe 6. The water supply pipes 6 are all laid overhead along the interval tunnels or bridges. The front station supplies water to the rear station through the water supply pipe 6. That is, Station 1 supplies water to Station 2 through the water supply pipe 6,... Station n supplies water to Station n + 1 through the water supply pipe 6, and so on. Adjacent water supply pipes 6 are communicated through the connecting pipe 11, and a valve C 10 is arranged on the connecting pipe 11.

[0021] Taking Station n and Station n + 1 as an example to illustrate the connection relationship of the water supply pipe 6. The front end of the water supply pipe 6 is communicated with the production and domestic water tank 3 of Station n. A booster pump 7 is arranged at the connection between the water supply pipe 6 and the production and domestic water tank 3 of Station n. A valve A 8 is arranged at the front end of the water supply pipe 6, and the valve A 8 is located behind the booster pump 7 and the connecting pipe 11. The rear part of the water supply pipe 6 is respectively communicated with the fire pool 1, the production and domestic water supply network 2, and the production and domestic water tank 3 of Station n + 1. A valve B 9 is arranged between the water supply pipe 6 and the production and domestic water tank 3 of Station n + 1.

[0022] The municipal water source is introduced into the station 1 through the water intake pipe 4, directly supplying water to the production and domestic water supply network 2 of the station 1, and replenishing the fire pool 1 and the production and domestic water tank 3 of the station 1. The pressurized water pump 7 in the station 1 pumps water from the production and domestic water tank 3, pressurizes it, and then supplies water to the station 2 through the water supply pipe 6, directly supplying water to the production and domestic water supply network 2 of the station 2, and replenishing the fire pool 1 and the production and domestic water tank 3. The water supply for the remaining stations is similar. A common water intake pipe 4 for the total water supply is shared by multiple stations, reducing the demand for the municipal pipes of the stations along the line, and reducing the difficulty and investment of the municipal connection. A production and domestic water tank 3 is set in each station. In case of a water source failure, there is still a certain amount of buffer water, increasing the reliability of the water supply.

[0023] The valve C10 is usually closed, and the valves A8 and B9 are usually open. The production and domestic water use of each station and the replenishment of the fire pool 1 are only provided by one pressurized water pump 7. In case of a failure of a certain pressurized water pump 7, power supply, etc., the corresponding valve C10 can be opened and the corresponding valve B9 can be closed to realize the mutual support between different pressurized water pumps 7 and the production and domestic water tank 3, improving the safety and reliability of the water source supply.

[0024] As Figure 2 shown, a station fire ring network 12 is provided in each of the stations. The station fire ring network 12 is connected to the fire pool 1. A fire water pump 13 is provided at the connection between the station fire ring network 12 and the fire pool 1. Two section fire pipe networks 14 are led out from one of the adjacent station fire ring networks 12 and arranged along the section tunnel. In the other station, the two section fire pipe networks 14 are connected into a ring and communicated with the station fire ring network 12 in the other station, and a valve D15 is provided at the communication point.

[0025] The valve D15 is usually in a closed state, dividing different water supply zones. Through the partition function of the valve D15, the fire water supply zones are simple and clear, there is no water flow between the station fire ring networks 12, and the water flow direction is clear when taking water for fire fighting. In case of an emergency, the valve D15 can be remotely or manually opened to connect the station fire ring networks 12 of different stations to realize the mutual support of the water source, improving the safety and reliability of the water supply.

[0026] The above has described the present invention in detail through embodiments, but the above content is only an exemplary embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. The protection scope of the present invention is defined by the claims. All those who use the technical solutions described in the present invention, or those skilled in the art inspired by the technical solutions of the present invention, within the essence and protection scope of the present invention, design similar technical solutions to achieve the above technical effects, or make equivalent changes and improvements to the application scope, etc., should still fall within the patent coverage protection scope of the present invention.

Claims

1. A water supply system for rail transit projects under the condition of imperfect external water sources, characterized in that: it includes a fire pool, a production and domestic water supply network, a production and domestic water tank, a water intake pipe, a water supply pipe and a booster pump. A number of stations are arranged in sequence along the track line. Fire pools, production and domestic water supply networks and production and domestic water tanks are all set in the stations. The frontmost station supplies water to the station through a water intake pipe connected to the municipal water supply network. The stations are connected by water supply pipes. The water supply pipes are all laid overhead along the interval tunnels or bridges. The front station supplies water to the rear station through the water supply pipe. The front end of the water supply pipe is communicated with the production and domestic water tank of the front station. A booster pump is arranged at the connection between the water supply pipe and the production and domestic water tank of the front station. The rear part of the water supply pipe is respectively communicated with the fire pool, the production and domestic water supply network and the production and domestic water tank of the rear station; a valve A is arranged at the front end of the water supply pipe, and a valve B is arranged between the water supply pipe and the production and domestic water tank of the rear station; adjacent water supply pipes are communicated through a connecting pipe, and a valve C is arranged on the connecting pipe; the water intake pipe is respectively communicated with the fire pool, the production and domestic water supply network and the production and domestic water tank of the frontmost station; station fire protection ring networks are all set in the stations. The station fire protection ring networks are connected to the fire pools. A fire pump is arranged at the connection between the station fire protection ring networks and the fire pools. Two interval fire protection pipe networks are led out from one of the adjacent station fire protection ring networks and arranged along the interval tunnels. In the other station, the two interval fire protection pipe networks are connected into a ring and communicated with the station fire protection ring network in the other station. A valve D is arranged at the communication point.

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