JP2506233B2 - Pump station equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a pumping station device, and more particularly to a layout of the pumping station device which is suitable for saving space in an underground pumping station in an urban area, for example.

[Prior Art] With recent trends of national land development, residential land development, and urbanization due to sudden changes in living environment, flooding of rivers and floods due to rainfall have become problems.

In addition, in view of the fact that land acquisition in urban areas is difficult, an underground river will be established, and an underground pump station will be constructed near the beach at the downstream of the underground river to guide the flood water from the underground river to the underground pump station. An underground pump station to be released from the sea to the sea is being planned.

The equipment for the large-capacity vertical spiral pump for sewage described in EBARA Jikho No. 109 (1979) P.13-16 was constructed in Montreal, Canada, but is an example of a conventional underground pump station. The outline will be described with reference to FIGS. 4 and 5.

FIG. 4 is a schematic sectional view of a conventional underground pumping station facility, and FIG. 5 is a schematic plan view as seen from the arrow E of FIG.

In FIGS. 4 and 5, GL indicates the ground, and the main part of the pumping station 20 is provided underground and has a cylindrical capsule shape.
Reference numeral 21 is a core pillar portion, and 22 is a peripheral wall portion. Each of the suction water tanks 23 is provided at the bottom of the open space S of the four chambers shown in FIG.
Is provided. Although these suction water tanks 23 are connected to underground waterways such as deep underground rivers, they are not shown here.

24 is a vertical centrifugal pump arranged in large numbers around the pumping station 20, 25 is a drive motor for the pump, and 26 is each pump 24
Each discharge pipe, 27 is a discharge water tank to which each discharge pipe 26 is connected. The discharge water tank 27 is formed in an annular shape on the outer periphery of the pumping station 20 as shown in FIG. 5, and is connected to a discharge water channel on the ground although not shown here.

[Problems to be Solved by the Invention] As described above, land acquisition in urban areas is difficult, and reducing the flat area of the pump station is the most important issue.

The above-mentioned prior art does not give sufficient consideration to the reduction of the plane area of the machine, and has a problem that the plane area of the machine is large.

That is, as shown in FIG. 4, the upper portion of the suction water tank 23 becomes an open space S, and no consideration is given to saving space. Further, there is a discharge water tank 27 in an annular shape on the outer circumference of the building of the pumping station 20, and the circular range of the diameter D thereof is the required plane area of the pumping station, which requires a large plane area.

An object of the present invention is to solve the above-mentioned problems in the prior art, to provide a pumping station device that can effectively utilize the upper part of the suction water tank and can reduce the plane area of the entire pumping station.

Another object of the present invention is to provide a pumping station device that can prevent backflow of water in the discharge water channel.

[Means for Solving the Problems] In order to achieve the above object, the most basic configuration of the pumping station apparatus according to the present invention is to use a plurality of pumps for pumping water from a suction passage to a discharge tank. The discharge pipes of these pumps are provided in the peripheral portion of the inside, and the discharge pipes of these pumps are provided in the central portion of the inside of the machine.

Further, in order to achieve the above object, a more specific configuration of the pumping station apparatus according to the present invention is provided with a suction flow passage connected to a ground water passage underground and a discharge water tank connected to a discharge water passage on the ground. In an underground pump station, a plurality of pumps for pumping water from the suction passage to the discharge water tank are arranged in the peripheral part of the pump station, and the discharge pipe system of these pumps is located in the central part of the pump station. The pipe is connected to the discharge tank by piping in the wall of the basement.

More specifically, an overflow weir is provided above the discharge pipe where the discharge pipe system is connected to the discharge water tank, and the height of the overflow weir is higher than the maximum water level of the discharge water tank.

In addition, the basement wall that pipes the discharge pipe system is used as a core part, and equipment for installation and maintenance of equipment inside the plant and control equipment are arranged in the surrounding basement.

[Operation] The operation of the above technical means is as follows.

By arranging multiple sets of pump discharge pipes in the upper part of the suction flow path gathered in the central part of the plant, the space above the suction flow channel is provided with equipment for installation and maintenance of the equipment in the plant and control equipment. It can be effectively used as a basement, and
There is no need to install a discharge water tank on the outer circumference of the pump station.

Further, by providing an overflow weir at the outlet of the discharge pipe and making the height thereof higher than the maximum level of the water level of the discharge water tank, it is possible to prevent backflow from the discharge water tank. Thus, by installing the overflow weir for backflow prevention, it is not necessary to stop all the pumps when one pump fails.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

FIG. 1 is a schematic sectional view of an underground pumping station facility according to an embodiment of the present invention, and FIG. 2 is a schematic plan view of the underground pumping station facility of FIG. The upper side is a plan view seen from the arrow A, the lower side is a plan view seen from the arrow B, and FIG. 3 is a schematic plan view seen from the arrow C in FIG.

In each drawing, 1 is an underground pumping station, 2 is a deep underground river related to a groundwater channel, and 3 is a suction channel connected to the underground river 2 and provided at the bottom of the underground pumping station. The main part of this underground pumping station 1 is below the ground GL, and has a cylindrical capsule shape centered on the y-axis. 1a is the upper part of the building of underground pumping station 1, which is at the same level as the ground GL, and 1b
Indicates the discharge pipe roof of the building.

4 is a plurality of units (in this example, shown in FIG. 2 as 5 in FIG. 2) arranged in a peripheral portion (on a concentric circle with respect to the center O) in the underground pumping station 1.
The vertical shaft suction centrifugal pump (hereinafter simply referred to as pump) 5 of the stand is a drive motor thereof. 6 is a discharge pipe of a plurality of sets (5 sets) of these plural pumps, and these discharge pipes 6 are gathered from the discharge part of each pump 5 to the central part in the underground pumping station 1, and the basement wall of the central part is It is piped in the core wall 12a according to. The five sets of discharge pipes 6 are arranged on a concentric circle C with respect to the center O as shown in FIG.
The inside reaches the upper part in the y-axis direction and is connected to the discharge water tank 8 as shown in FIG. 7 is an overflow weir formed in the upper part of each discharge pipe 6 (outlet of the discharge pipe), and the height of each overflow weir 7 is higher than the maximum water level of the discharge water tank 8. 8 is a discharge water tank provided near the ground of the underground pumping station 1, and 9 is a discharge water channel on the ground which is connected to the discharge water tank 8, and is generally a river, a canal or the like that naturally flows down to the sea.

10 is a basement wall constituting the underground pumping station 1, 11 and 12
Indicates the basement.

The basement 11 is formed in an annular shape above the plurality of pumps 4 and the drive motors 5, and 15 is an overhead traveling crane arranged in the annular basement 11. This overhead traveling crane 15 is used for installation and maintenance of equipment such as the pumps and motors in the field. An annular basement 1 on the core wall 12a side
On the second side, there is a control management room 16 in which control equipment is installed.

Reference numeral 13 is a gate provided in each suction pipe portion leading from the suction flow path 3 to the plurality of pumps 4, and 14 is a gate drive portion located in the basement 12.

Next, the operation (action) of such an underground pumping station will be described.

For example, flooding or excessive running water may cause underground river 2
Flows into the underground suction passage 3. The pump 4 is operated in the control management room 16. At this time, it is possible to select the opening / closing of the gate 13 and switch the operating number of the pumps 4 depending on the flow rate flowing from the underground river 2.

The pump 4 sucks water from the suction flow path 3 and discharges the water into the discharge pipe 6. The water is pumped up, discharged over the overflow weir 7, discharged into the discharge water tank 8, and discharged into the sea through the discharge water passage 9.

 According to this embodiment, there are the following effects.

1) Install the discharge pipe 6 of the pump into the core wall 12 inside the underground pump station 1.
Since it was piped in a, the upper part of the suction flow path 3 and the pump 4,
Basements 12 and 11 can be configured above the drive motor 5, and a control management room 16, an overhead traveling crane 15 and the like can be provided to effectively utilize the space.

2) The discharge water tank 8 is provided below the discharge pipe roof 1b of the building,
Since it is not necessary to provide a discharge water tank on the outer circumference of the pumping station as in the conventional case, it is possible to reduce the plane area of the entire pumping station.

3) Since the overflow weir 7 higher than the maximum water level of the discharge water tank 8 is formed in the upper portion (outlet portion) of the discharge pipe 6, it is possible to prevent the backflow of water in the discharge water channel 9. Therefore, even if one pump fails, there is no risk of backflow, and it is not necessary to stop all the pumps.

4) According to this embodiment, the diffusion of deep underground rivers and the construction of underground pumping stations are promoted in urban areas.

In addition, in the above-mentioned embodiment, the underground pumping station facility for flowing the water of the underground river into the sea, which is mainly effective as a flood control measure during precipitation, has been described, but the present invention is not limited to this, and sewage treatment, water treatment It goes without saying that it can be applied to pumping station equipment as part of the system configuration of equipment and the like.

Further, in the above-mentioned embodiment, an example of a cylindrical underground pumping station has been shown, but the machine section is not limited to a circular shape, and it is possible to adopt other shapes such as a square shape or a square shape including a curved portion.

Further, although not shown in the drawing, the suction passage has a vertical shape, and the suction pump tank (water suction port) for the upstream pump and the suction pump tank (water suction port) for the downstream pump are changed in level so that the suction tank upper part has a different shape. It is possible to eliminate the stagnation of water, and thus to ensure a uniform inflow to all pumps.

Further, by adopting the water absorption tank having the elongated shape, it is possible to further reduce the space as compared with the conventional machines.

[Effects of the Invention] As described in detail above, according to the present invention, it is possible to provide a pumping station device that can effectively utilize the upper part of the suction water tank and can reduce the plane area of the entire station. .

Further, it is possible to provide a pumping station device that can prevent the reverse flow of water in the discharge water channel.

[Brief description of drawings]

1 is a schematic sectional view of an underground pumping station facility according to an embodiment of the present invention, FIG. 2 is a schematic plan view of the underground pumping station facility of FIG. 1, and FIG. 3 is FIG. No. 4, a schematic plan view of the arrow C of FIG.
FIG. 5 is a schematic cross-sectional view of a conventional underground pumping station facility, and FIG. 5 is a schematic plan view taken in the direction of arrow E in FIG. 1 ... Underground pumping station, 2 ... Underground river, 3 ... Suction channel, 4 ... Pump, 6 ... Discharge pipe, 7 ... Overflow weir, 8 ...
… Discharge water tank, 9 …… Discharge water channel, 11, 12 …… Basement, 12a…
… Core wall, 15 …… Overhead traveling crane, 16 …… Control management room.

Claims (4)

(57) [Claims] 1. A plurality of pumps for pumping water from a suction flow path to a discharge water tank are arranged in a peripheral portion of a pumping station, and a discharge pipe system of these pumps is provided in a central portion of the pumping station. Characteristic pumping station equipment. 2. An underground pumping station having a suction channel connected to a ground water channel underground and a discharge water tank connected to a discharge water channel on the ground, wherein a plurality of pumping water from the suction channel to the discharge water tank. Pumps are arranged around the inside of the pumping station, and the discharge pipe system of these pumps is connected to the discharge water tank by piping inside the basement wall of the central part of the pumping station. apparatus. 3. An overflow weir is provided on an upper portion of the discharge pipe where the discharge pipe system is connected to the discharge water tank, and the height of the overflow weir is formed higher than the maximum water level of the discharge water tank. 1
Or the pumping station device according to any one of 2). 4. The installation and maintenance equipment and control equipment for the equipment inside the machine are arranged in the basement room around the basement wall with the discharge pipe system as the core. Pumping station equipment.