JP5622113B2 - Pumping unit - Google Patents

Description

  In this invention, a pump unit is installed in a water flow channel and discharged to a drainage channel such as an irrigation water channel having a higher water level from the upstream side, or in order to prevent backflow to a tributary due to increased water, The present invention relates to a pump unit in which a gate door is installed at a junction and is installed in an upstream waterway of a gate or in an adjacent land of the waterway.

Since it is difficult to secure a site with a conventional standard pump facility, the demand for a pump gate for installing a pump unit in a flowing water channel is increasing. However, pump gates require the construction of gate pillars, which requires considerable time and cost for civil engineering work. In addition, there are problems such as the need to expand existing rivers and dig riverbeds depending on the channel width and water level.
The drainage pump fixedly installed in the structure has a gate door that divides the upstream side and the downstream side in a drainage machine station, etc., and a column type pump that has a submersible pump inside a column fixedly installed in the structure is a patent document. 1 is disclosed.
A column-type pump cable or the like is proposed by the applicant of this application in Patent Document 2, and the column is suspended from the top wall of the water absorption tank, and the submersible pump is supported on the lower end of the opened column. A mold pump is described in the specification.
Further, Patent Document 3 discloses a method for constructing a pump facility that facilitates maintenance by manufacturing a pump block including a pump housing and a water intake chamber unit with prefabricated concrete in an outdoor pump facility.

Japanese Patent No. 3692339 (paragraph numbers 0050 to 0053, FIGS. 1 and 4) Japanese Patent No. 3534031 (paragraph number 0006, FIG. 1 and FIG. 2) Japanese Patent Laid-Open No. 4-41993 (claim 1 and column of action and effect of the invention, FIGS. 2 and 3)

The column type submersible pumps described in Patent Documents 1 and 2 suspend the submersible pump in the column so that maintenance of the submersible pump is easy. Requires considerable time and money for production and civil engineering.
The construction method of the pump equipment described in Patent Document 3 for producing the pump block including the pump housing and the intake chamber unit with the prefabricated concrete has the advantage of shortening the construction period and being able to construct at low cost, but is fixed to the structure. It is installed and it is difficult to move the equipment. In addition, since the pump housing is made of concrete blocks, considerable time and cost are required for repair and replacement when worn or damaged.
The present invention provides a column type pump unit that can reduce the construction space according to the condition of the waterway, shorten the construction period, enable construction at low cost, and can be applied to the enhancement or relocation of an existing pump station.

The column type pump unit according to the present invention is a pump facility in which a column type submersible pump is installed to forcibly drain water from the flow channel to the drainage channel, and a water absorption tank on which a discharge tank having an open upper end is placed is installed in the flow channel. In addition, a suction port for running water and a discharge port communicating with the side wall facing the drainage channel of the discharge tank are opened in the water absorption tank, and a column for installing the submersible pump is suspended from the partition walls of the water absorption tank and the discharge tank. The upper end of the column is expanded at the middle of the discharge tank to form a column-type pump unit, and the water absorption tank and the discharge tank are installed up and down, so the machine space is reduced according to the conditions of the water channel, Construction is possible even at a small site with a shorter construction period and lower costs.

The pump unit installed in the flow channel according to the required amount of drainage is composed of a water column and a discharge tank with open communication openings on both side walls to form a column column pump unit. The connection port of the discharge tank is connected to the discharge port of the discharge tank of the column type pump unit, and the communication port at the other end of the discharge tank is connected to the drainage channel. Can be increased. Construction on a small site is possible, and it can be used to reinforce existing pumping stations to shorten the construction period.

In a pump facility that discharges to a drainage channel such as an irrigation channel whose water level is higher than the upstream side, an adjustment water tank is formed by overlapping the adjustment block on the water absorption tank, and the adjustment column pipe is attached to the lower column pipe that hangs down on the adjustment water absorption tank. Is a column type pump unit that forms a column unit and supports the discharge tank placed on the adjusted water tank at the height of the drainage channel. The height of the discharge tank placed on the water tank The column type pump unit can be configured in accordance with the drainage channel. It is also possible to form a plurality of adjusting blocks and joint columns.

Depending on the amount of drainage required for pump equipment with a large water level difference between upstream and downstream,
Displacement tanks with open communication ports on both side walls are placed on the adjusted water absorption tank to form the column column pump unit. The connection port of the discharge column type pump unit is connected to the discharge tank of the column type pump unit. The other end of the discharge tank is connected to the drainage channel, and if a drainage tank is attached to the column type pump unit, it absorbs sudden flow fluctuations and pressure changes, It is possible to drain the water from the water channel such as a tributary that has increased due to heavy rain to the main channel of the drainage channel B.

As a countermeasure against surging, a drainage tank is installed in the pump unit of the drainage station, etc., and the discharge port of the discharge tank of the column type pump unit or the communication port at the other end of the discharge tank of the extension column type pump unit is the outlet of the drainage tank. The drainage outlet of the drainage tank is connected to the drainage channel, and if the drainage tank is added to the column type pump unit, it can absorb sudden flow fluctuations, pressure changes, and tributaries that have increased due to heavy rain. Can be drained into the main stream of the drainage channel B.
In a channel with a step between the flow channel and the drainage channel, open the drainage outlet of the drainage tank connected to the discharge tank at a suitable location on the side wall, and adjust the discharge pipe connected to the drainage outlet of the drainage tank to the height of the drainage channel. It can be connected to a drainage channel, and can be discharged into a drainage channel such as an irrigation channel whose water level is higher than the upstream side just by adjusting the height of the outlet of the drainage tank.

If the water absorption tank and the discharge tank placed on the water absorption tank are formed of rectangular manholes or box culverts, it is possible to shorten the production period and cost of each tank, and to shorten the work period and cost of the pump unit.

  In the column type pump unit according to the present invention, since the water absorption tank and the discharge tank are arranged above and below, the machine space can be reduced. Construction on a small site is possible, and it can be used to enhance existing pumping stations. The structure that discharges directly from the submersible pump in the water absorption tank to the discharge tank at the top of the pump eliminates equipment and other incidental equipment, thereby reducing production costs and construction time, and reducing the construction time at low cost. Since a column-type submersible pump is used as the drainage pump, it can be easily removed by simply lifting it from the column during pump maintenance.

It is a partial vertical side view of the column type pump unit concerning this invention. Similarly, it is a front view of a column type pump unit. Similarly, it is a top view of a column type pump unit. Similarly, it is a conceptual diagram which shows the state which installs a submersible pump in a column. Similarly, it is a partially vertical side view of a column type pump unit of another embodiment. Similarly, it is a conceptual diagram of the state which installs a submersible pump in the column unit shown in FIG. Similarly, it is a partially longitudinal front view in which a drainage tank is also provided in the column type pump unit of another embodiment. Similarly, it is the top view which attached the drainage tank to the column type pump unit. Similarly, it is a partially longitudinal front view of a pump unit in which a column column pump unit is installed in parallel with a column type pump unit of another embodiment. Similarly, it is a partially longitudinal front view of a pump unit in which a column column pump unit is installed in parallel with a column type pump unit of another embodiment. Similarly, it is a top view which installs and installs the column type pump unit shown in FIG. 9 or FIG.

The column type pump unit according to the present invention will be described in detail with reference to the drawings. FIGS. 1 and 2 are a partially longitudinal side view and a front view of the column type pump unit, and FIG. 3 is a plan view.
As shown in FIG.1 and FIG.2, the column type pump unit 1 is comprised by the lower water absorption tank 2, the upper discharge tank 4, and the column type submersible pump.
The water absorption tank 2 is formed by a rectangular block having a running water suction port 3 opened on a side wall facing the upstream flow channel A and having an upper end opened. As shown in FIG. 3, a rectangular block discharge tank 4 is placed in the water absorption tank 2, a discharge port 5 is opened on a side wall of the discharge tank 4 facing the drainage channel B, and an insertion port for a column 6 is formed at the upper end. 7 is opened. Due to the block structure, the construction period can be shortened.
The column 6 is composed of an upper column pipe 9 and a lower column pipe 10 having a flange 8 in the middle. A partition wall 11 having an opening is sandwiched between the water absorption tank 2 and the discharge tank 4, and a flange 6 is engaged with the partition wall 11 so that the column 6 is removably suspended. The upper end of the upper column pipe 9 is expanded at the middle part of the discharge tank 4 to form a discharge port 12, which also serves as an insertion port for the submersible pump 13. The submersible pump 13 is locked to the lower column pipe 10 of the column 6, a suction casing 14 is connected to the lower end of the submersible pump 13, and is suspended from the lower column pipe 10, and is opened near the bottom of the water absorbing tank 2. is there. Vortex preventing plate 1 5 for rectifying the vortex flowing from inlet 3 to the inner wall of the water tank 2 are to heavy set.
The water absorption tank 2 on which the discharge tank 4 is placed may be installed in the flowing water channel A or at a position adjacent to the flowing water channel A.

FIG. 4 is a conceptual diagram of a state in which the submersible pump is installed in the column. The column 6 is inserted from the insertion port 7 at the upper end portion of the discharge tank 4, and the column 6 is suspended from the opening 11 a provided in the partition wall 11 of the water absorption tank 2 and the discharge tank 4. Thereafter, the submersible pump 13 is suspended from the insertion port 7 and inserted into the discharge port 12 of the column 6 to be attached. When repairing and inspecting the submersible pump 13, it can be lifted from the column 6 and pulled out from the discharge port 12 and the insertion port 7.
Since the structure directly discharges from the upper column pipe 9 of the column 6 to the discharge tank 4, devices such as a discharge valve, a flap valve, a cast iron pipe, and a check valve are not required and can be constructed at low cost. Since the water absorption tank 2 and the discharge tank 4 are arranged one above the other, the machine space can be reduced, construction on a narrow site is possible, construction time can be shortened, and low-cost construction is possible. It can also be used to enhance existing pumping stations. The column-type pump unit 1 can be relocated simply by placing the discharge tank 4 on the water absorption tank 2 and being installed in the flow channel A, and can be installed or relocated to a suitable location in the flow channel A depending on the situation. .

FIG. 5 is a partially longitudinal side view of a column type pump unit of another embodiment. In the pump facility that discharges to a drainage channel B such as an irrigation channel having a higher water level than the upstream channel A, an adjustment water tank 17 is constructed by adding an adjustment block 16 that opens only at the top and bottom of the water absorption tank 2. The discharge tank 4 is adjusted to a height matching the drainage channel B.
A column unit 19 in which an adjustment column pipe 18 is connected between an upper column pipe 9 and a lower column pipe 10 is suspended from an adjustment water absorption tank 17 to which an adjustment block 16 is added. The flange 8 at the lower end of the upper column pipe 9 is engaged with an opening 11 a provided in the adjustment water absorption tank 17 and the partition wall 11 of the discharge tank 4. A column unit 19 that adjusts the height by connecting an adjustment column pipe 18 is suspended from an adjustment water absorption tank 17 to which an adjustment block 16 is added, so that the column type has a height matching the drainage channel B at a high position. A pump unit 20 is provided. In addition, according to the height of the drainage channel B, the adjustment block 16 of the adjustment water absorption tank 17 and the adjustment column pipe 18 of the column unit 19 may be stacked in a plurality of stages.
FIG. 6 is a conceptual diagram of a state in which the submersible pump is installed in the column unit. The flange 8 of the column unit 19 inserted from the insertion port 7 at the upper end of the discharge tank 4 is connected to the adjustment water absorption tank 17 and the partition wall 11 of the discharge tank 4. The submersible pump 13 is suspended and attached to the opening 11a provided in the suspension.

7 and 8 are a partially longitudinal front view and a plan view of a column type pump unit according to another embodiment provided with a drainage tank, wherein the column type pump unit 1 is provided with a drainage tank 21, and a water absorption tank. 2 is connected to the water discharge port 22 of the drainage tank 21, and the discharge pipe 24 connected to the discharge port 23 of the drainage tank 21 is connected to the drainage channel B.
If the drainage tank 21 is provided in the column type pump unit 1, rapid flow rate fluctuations and pressure changes can be absorbed, and the running water of the flow channel A such as a tributary increased by heavy rain can be drained into the main flow of the drainage channel B. If the discharge port 23 of the drainage tank 21 connected to the discharge tank 4 is opened at an appropriate position on the side wall and the discharge pipe 24 connected to the discharge port 23 of the drainage tank 21 is set to the height of the drainage channel B, the drainage tank 21. By simply adjusting the height of the outlet 23, it can be discharged into a drainage channel B such as an irrigation channel having a higher water level than the upstream channel A.

FIG. 9 is a partial longitudinal sectional front view of a pump unit in which a column column pump unit is arranged in parallel with a column type pump unit of another embodiment. A column-type pump unit 1 shown in FIG. 1, intended to parallel the Tsugiashi column pump unit 25 to use the discharge vessel 26 having a communication port 27 in the side walls, detailed names and reference numerals are omitted are the same .
A column type pump unit 1 having a suction port 3 and a discharge port 5 is installed in the flowing water channel A. The column-type pump unit 1 is provided with a joint column-type pump unit 25 having suction ports 3 in the water-absorbing tank 2 and communication ports 27, 27 on both side walls of the discharge tank 26. A drainage tank 21 having a water discharge port 22 and a discharge port 23 is provided in parallel at the other end of the joint column type pump unit 25. One communication port 27 of the connection column type pump unit 25 communicates with the discharge port 5 of the column type pump unit 1, and the other communication port 27 communicates with the water discharge port 22 of the drainage tank 21. The drainage discharged from the column type pump unit 1 flows out from the discharge port 5 and flows into the discharge tank 26 from the communication port 27 at the front end of the joint column type pump unit 25. The wastewater discharged from the joint column type pump unit 25 merges, flows from the rear end communication port 27 through the water discharge port 22 to the drainage tank 21, and is discharged from the discharge port 23 to the drainage channel B.
The number of installed pump units can be increased according to the amount of drainage required. In addition, the construction period can be shortened because it can be applied to the enhancement of existing pump stations. In this embodiment, the column-type pump unit 1 and the column-type pump unit 1 are arranged side by side. However, if the column-type pump unit 1 and the column-type pump unit 1 cannot be arranged side by side with existing obstacles, they are installed at separate positions. May be connected by piping or the like. Further, when two or more rows (for example, 3 × 3 rows) of pump units are arranged in parallel, the numerical apertures of the discharge ports 5 and the communication ports 27 may be increased as necessary.
In addition, the communication port 27 at the rear end of the discharge tank 26 constituting the joint column type pump unit 25 may be directly used as the discharge port of the drainage channel B.

FIG. 10 is a partially longitudinal front view of a pump unit in which a column column pump unit is installed in parallel with a column type pump unit of another embodiment. The column-type pump unit 20 using the adjusted water-absorbing tank 17 shown in FIG. 5 and the extension column-type pump unit 28 using the discharge tank 26 having the communication ports 27 on both side walls are arranged in parallel. The reference numerals are the same and are omitted.
As shown in FIG. 5, a column type pump unit 20 that uses an adjustment water absorption tank 17 in which adjustment blocks 16. The column-type pump unit 20 is provided with a joint column-type pump unit 28 having suction ports 3 in the adjusted water-absorbing tank 17 and communication ports 27, 27 on both side walls of the discharge tank 26. A drainage tank 21 having a water discharge port 22 and a discharge port 23 is juxtaposed with the other end of the joint column type pump unit 28. One communication port 27 of the connecting column type pump unit 28 communicates with the discharge port 5 of the column type pump unit 20 , and the other communication port 27 communicates with the water discharge port 22 of the drainage tank 21. The drainage discharged from the column type pump unit 20 flows out from the discharge port 5 and flows into the discharge tank 26 from the communication port 27 at the front end of the joint column type pump unit 28. The wastewater discharged from the joint column type pump unit 28 merges, flows into the drainage tank 21 from the rear end communication port 27 through the water discharge port 22, and is discharged from the discharge port 23 to the drainage channel B.

Even in a channel with a large level difference between the flowing water channel A and the drainage channel B, the column type pump adapted to the drainage channel B by placing the discharge tanks 4 and 26 in the adjusted water absorption tank 17 in which the height of the water absorption tank 2 is adjusted. The unit 20 and the joint column type pump unit 28 can be configured. Further, it is possible to increase the number of installation column type pump units 28 according to the amount of drainage required. Construction on a small site is possible, and it can be applied to the expansion of existing pump stations to shorten the construction period and reduce costs.
The discharge port 23 of the drainage tank 21 connected to the discharge tank 26 is opened at an appropriate position on the side wall, and the discharge pipe 24 connected to the discharge port 23 of the drainage tank 21 is set to the height of the drainage channel B to communicate with the drainage channel B. I'm allowed. Just by adjusting the height of the outlet 23 of the drain tank 21, it can be discharged into a drainage channel B such as an irrigation channel having a higher water level than the upstream channel A. The communication port 27 at the rear end of the discharge tank 26 may be directly used as the discharge port of the drainage channel B.

FIG. 11 is a plan view in which the column type pump unit and the extension column type pump unit shown in FIG. 9 or FIG.
In order to prevent the reverse flow to the tributary due to the water increase, the operation weir 29 is installed at the junction of the main and tributaries, and the column type pump units 1 and 20 formed by the square blocks and the extension column are adjacent to the flow channel A. Mold pump units 25 and 28 are arranged side by side. Each of the submerged waters that are branched from the water channel A such as a tributary and led to the water absorption channel 30 from the suction ports 3 of the plurality of water tanks 2. Pumped by a pump 13, passed through the discharge port 5 of the discharge tank 4 and the communication ports 27 and 27 of the discharge tank 26, discharged to the drain tank 21, and discharged from the discharge pipe 24 to the drainage channel B such as the main stream. Let
If a plurality of column column pump units 25, 28 arranged side by side with the column type pump units 1, 20 are connected, it is possible to construct on a small site, and it can be applied to the enhancement of existing pump stations. The square block used for the water absorption tank 2, the discharge tanks 4 and 26, and the adjustment block 16 can use off-the-shelf products such as a square manhole or a box culvert, and can use off-the-shelf openings. The construction period can be shortened by using ready-made concrete products.

  In the column type pump unit according to the present invention, since the water absorption tank and the discharge tank are arranged vertically, the space for the machine can be reduced. Since it is a structure that discharges directly from the submersible pump in the water absorption tank to the discharge tank above the pump, the cost and construction period can be reduced by omitting incidental facilities such as equipment, and the construction period can be shortened at low cost. Therefore, it is possible to reduce the machine space according to the condition of the waterway, and to construct on a narrow site, to shorten the construction period and at a low cost, and to apply to the enhancement of the existing pumping station.

DESCRIPTION OF SYMBOLS 1,20 Column type pump unit 2 Water absorption tank 3 Suction port 4,26 Discharge tank 5 Discharge port 6 Column 10 Lower column pipe 11 Bulkhead 13 Submersible pump 16 Adjustment block 17 Adjustment water absorption tank 18 Adjustment column pipe 19 Column unit 21 Drain tank 22 Discharge port 23 Discharge port 25, 28 Joint column type pump unit 27 Communication port A Flow channel B Drain channel

Claims (7)

In a pump facility where a column-type submersible pump is installed to forcibly drain water from the flow channel (A) to the drain channel (B), the water absorption tank (2) on which the discharge tank (4) with the upper end opened is placed. While installing in (A), while opening the discharge port (5) connected to the suction port (3) of the flowing water and the side wall facing the drainage channel (B) of the discharge tank (4) in the water absorption tank (2). The column (6) for installing the submersible pump (13) is suspended from the partition wall (11) of the water absorption tank (2) and the discharge tank (4), and the upper end of the column (6) is connected to the discharge tank (4). A pump unit characterized in that the column type pump unit (1) is configured to be expanded at an intermediate portion . A discharge tank (26) having communication ports (27) opened on both side walls is placed on the water absorption tank (2) to constitute a column column pump unit (25), and a column column pump unit (25 ) Of the discharge tank (26) is connected to the discharge port (5) of the discharge tank (4) of the column type pump unit (1), and the communication port ( 27. The pump unit according to claim 1, wherein 27) is communicated with the drainage channel (B). The adjustment block (16) is overlapped with the water absorption tank (2) to form an adjustment water absorption tank (17), and the adjustment column pipe (18) is connected to the lower column pipe (10) suspended from the adjustment water absorption tank (17). Are connected to form a column unit (19), and a column-type pump unit (20) is constructed in which the discharge tank (4) placed on the adjusted water absorption tank (17) is suspended at the height of the drainage channel (B). The pump unit according to claim 1, wherein A discharge tank (26) having communication ports (27) opened on both side walls is placed on the adjusted water absorption tank (17) to form a column column pump unit (28). 28) The communication port (27) of the discharge tank (26) is connected to the discharge port (5) of the discharge tank (4) of the column type pump unit (1), and the communication port at the other end of the discharge tank (26). The pump unit according to claim 3, wherein (27) communicates with the drainage channel (B). The discharge port (5) of the discharge tank (4) of the column type pump unit (1, 20) or the communication port (27) at the other end of the discharge tank (26) of the extension column type pump unit (25, 28). Is connected to the water outlet (22) of the drainage tank (21), and the outlet (23) of the drainage tank (21) is connected to the drainage channel (B). The pump unit according to any one of claims. The discharge port (23) of the drainage tank (21) connected to the discharge tank (26) is opened at an appropriate position on the side wall, and the discharge pipe (23) connected to the discharge port (23) of the drainage tank (21) is connected to the drainage channel. The pump unit according to claim 5, wherein the pump unit is adjusted to a height of (B). The discharge tank (4, 26) placed on the water absorption tank (2) and the water absorption tank (2) is constituted by a square manhole or a box culvert, according to any one of claims 1 to 6. The pump unit described.

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