JP2001262545A - Gate pump equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide gate pump equipment with a simple structure and small size installable at a low cost, avoiding a down flow object in a water channel from directly striking a submerged pump, and requiring less power for lifting operation, thus providing an advantage of low running cost. SOLUTION: Two units of main and auxiliary vertical submerged pumps 9a and 9b are connected to the fork-shaped lower end opening surface 8a and 8b of an elbow delivery pipe 4, respectively, the elbow delivery pipe 4 is divided into a main pump side delivery route and an auxiliary pump side delivery route through a separator, a check valve is installed in both delivery routes, a lifting guide 14 is vertically installed in a upper surface opening box-shaped gate skeleton body 1, and an engagement element 15a led from the outer surface of the elbow elbow pipe 4 is engaged slidably with the lifting guide 14. When a pump is lowered, suction ports 16a and 16b are lowered to near the opening position of a water intake 2, and the side end opening surface 5 of the elbow delivery pipe 4 coincides with a water outlet 3. When the pump is lifted, the side end opening surface 5 is separated from the water outlet 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gate pump system for preventing intrusion of outside water and forcibly discharging internal water to the outside water side.

[0002]

2. Description of the Related Art As shown in FIGS. 9 and 10, a submersible pump 104 is mounted on an inner water side A of a gate 101 which is supported up and down by a water gate provided in a water channel.
When the outer water level is lower than the inner water level, as shown in FIG.
10, the submersible pump 104 is pulled up and drained by natural flow, and when the external water level becomes higher than the internal water level, the submersible pump 104 is lowered together with the gate 101 as shown in FIG. Gate pump equipment for forcibly discharging water is already known.

However, in the above-mentioned conventional gate pump equipment,
Since the submersible pump 104 is cantilevered on the inland water side A of the gate 101, a weight imbalance occurs and the gate 1
01 is not smooth, the large weight gate 101 is moved up and down together with the submersible pump 104, so a large power is required, the running cost is increased, and the large opening H for the passage of the pump through the slab at the upper part of the water channel is formed. There is a drawback that a machine hatch is required, the construction cost is increased due to the maintenance of the strength of the building frame, and the submerged pump 104 facing the inner waterway A is directly hit by the falling material in the waterway and is damaged. Furthermore, the gate equipment is provided with sub-pumps in preparation for additional drainage in the event of a main pump failure or emergency, and separate discharge pipes are provided for each of these two separately mounted main and sub-pumps. For this reason, there is a regret that the configuration becomes complicated and the equipment is inevitably enlarged.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a simple and low-cost installation without increasing the size of the apparatus, to avoid direct contact of a flowing material in a water channel with a submersible pump, and to provide a large power for lifting and lowering operations. It is an object of the present invention to provide a gate pump facility which does not require the above and is advantageous in running cost.

[0005]

In the gate pump system according to the present invention, a box-shaped gate body having an open top is provided in a water channel, an intake port is opened below a side wall surface of an inner water of the gate body, and an outer water side of the gate body is provided. A single water outlet is opened in the upper part of the wall surface, and the lower end opening surface of the elbow-shaped discharge pipe formed so that the side end opening surface is detachably opposed to the opening peripheral surface of the water outlet is formed into a forked shape. Branched, the outlets of the two main and sub vertical submersible pumps are separately connected to the branched lower end opening surface, respectively, and integrally combined,
An elbow-shaped discharge pipe is divided into a main pump side discharge path and a sub-pump side discharge path by a separator, and a check valve is attached to each of the divided discharge paths, and an elevating guide vertically provided in the gate body, An up-and-down mechanism of both main and sub vertical submersible pumps is constituted by slidably engaging an engaging element derived from the outer surface of the elbow discharge pipe, and a main and sub vertical submersible pump by the up and down mechanism. When the lifting / lowering movement width is lowered, the pump suction port is lowered to near the opening position of the water intake port, and the side end opening surface of the elbow-shaped discharge pipe is in conduction with the water discharge port. It was set so as to be separated above the opening position and to open the side end opening surface of the elbow-shaped discharge pipe away from the peripheral surface of the water outlet and move upward.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described below with reference to FIGS.

Reference numeral 1 denotes a gate body provided in the water channel, which is formed in a box shape having an open upper surface, has an intake port 2 opened below the inner water side wall surface 1a, and has an upper portion above the outer water side wall surface 1b. Has a single water outlet 3. Reference numeral 4 denotes an elbow-shaped discharge pipe. A flange F for mounting a seal packing 6, which will be described later, is attached to the peripheral surface of the side end opening surface 5, and the inner diameter is slightly smaller than the inner diameter on the front surface of the flange F. The seal packing 6 is attached by a seal ring, and is formed so as to oppose the outer peripheral surface of the water discharge port 3 so as to be able to come and go. Further, the lower end opening surface of the elbow-shaped discharge pipe 4 is bifurcated, and the discharge ports 10a and 10b of the two main and sub vertical pumps 9a and 9b are respectively connected to the branched lower end surfaces 8a and 8b. Each is connected separately and joined together. Reference numeral 11 denotes a separator vertically provided in the elbow-shaped discharge pipe 4, and the interior of the elbow-shaped discharge pipe 4 is partitioned into a discharge path 12a on the main pump 8a side and a discharge path 12b on the sub-pump 8b side. Check valves 13a and 13b are attached to the two divided discharge passages 12a and 12b, respectively. Butterfly check valves are preferable, and 13a in FIG. 3 is a main valve of the butterfly check valve. A valve body on the pump side is shown, and 13b shows a valve body on the sub-pump side. Reference numeral 14 denotes an elevating guide vertically provided in the gate body, and reference numeral 15a denotes an engaging member derived from the outer surface of the elbow-shaped discharge pipe 4. The engaging member 15a is slidably engaged with the elevating guide 14 so as to be slidable. The lifting mechanism for the sub-bore vertical submersible pumps 9a and 9b is constructed. The lower part of the lifting guide 14 has a front edge 14a and a rear edge 14a.
b is an inclined edge, and is fixed to the outer water side wall surface 1b in such a manner as to gradually approach the periphery of the water discharge port 3. The vertical movement width of the main and sub vertical submersible pumps 9a and 9b by the above-mentioned elevating mechanism is such that the pump suction ports 16a and 16b are lowered to near the opening position of the water intake port 2 and the side ends of the elbow-shaped discharge pipe 4 during the lowering operation. The opening face 5 is concentric with the water discharge port 3, the pump suction ports 16 a, 16 b are separated from the opening position of the water intake port 2 at the time of the ascent operation, and the side end opening face 5 of the elbow-shaped discharge pipe 4 is connected to the water discharge port 3. It is set so as to move upward from the opening position.

When the main and sub vertical submersible pumps 9a and 9b start to descend along the elevating guide 14, the separation pin 15b, which will be described later, is in sliding contact with the elevating guide 14, so that the side end of the elbow-shaped discharge pipe 4 is provided. The opening surface 5 is slightly separated from the outer water side wall surface 1b, but immediately before reaching the descent limit, the engaging element 15a abuts on the front edge 14a of the lower portion of the elevating guide 14, and along the inclination of the front edge 14a. When the side end opening surface 5 and the water outlet 3 are concentrically guided and guided forward, the weight of the main and sub vertical submersible pumps 9a and 9b acts as thrust and acts on the peripheral surface of the water outlet 3. The side end opening surface 5 of the elbow-shaped discharge pipe 4 and the water outlet 3 are brought into conduction. Reference numeral 15b denotes a separating pin led out from the outer surface of the elbow-shaped discharge pipe 4, and the lifting guide 1 when the main and sub vertical submersible pumps 9a and 9b reach the lowering limit.
4 is formed to be in contact with the rear edge 14b of the lower part,
When the main and auxiliary vertical submersible pumps 9a and 9b start to rise along the elevating guide 14, the separation pin 15b
By being guided backward along the inclination of b, the side end opening surface 5 of the elbow-shaped discharge pipe 4 is separated from the peripheral surface of the water discharge port 3, and in this state, the main and sub vertical water pumps 9a, 9a,
9b is raised to a predetermined lifting limit. 1
Reference numeral 7 denotes a lifting chain for lifting operation.

[0009]

[Function] When the outer water level is lower than the inner water level, the gate body 1
At the same time, the main and sub vertical submersible pumps 9a and 9b are in the ascending position and drained by natural flow. When the water level becomes higher, the main and sub vertical submersible pumps 9a and 9b together with the gate body 1 are provided.
8 is prepared for the intrusion of outside water by lowering b, but even if the outside water level further rises, while the inside water level does not reach the pump operation water level, only check valves 13a and 13b prevent outside water intrusion. However, forced discharge of inland water by pump operation is not performed. In the event that the pump needs to be repaired or replaced during this period, it is sufficient to raise only the main and sub vertical submersible pumps 9a and 9b while leaving the gate body 1 in the water channel. When the internal water level rises and reaches a predetermined operation water level, the internal pump is forcibly discharged by operating the main pump 9a. When a failure occurs in the main pump 9a, the internal water is forcibly discharged by operating the sub-pump 9b.
When the internal water is to be discharged urgently, the main and sub vertical submersible pumps 9a and 9b are simultaneously operated. As described in the embodiment, when the main and sub vertical submersible pumps 9a and 9b are lowered, the engaging element 15a is guided forward along the inclination of the front edge 14a at the lower part of the lifting guide 14. Since the weight of the main and sub vertical submersible pumps 9a and 9b acts as thrust on the peripheral surface of the water discharge port 3, the peripheral surface and the side end opening surface 5 of the elbow discharge pipe 4 Is stable, and no pressure leakage occurs during operation of the pump.
If the inner diameter of the seal packing 6 is made slightly smaller than the inner diameter of the packing mounting flange F, as in the embodiment of FIG. The pressure receiving surface 6e is formed, and the seal packing 6 is in close contact with the peripheral surface of the water discharge port 3 during the operation of the pump, so that the pressure leakage function of the joint surface is further enhanced in combination with the thrust action by the pump weight. .

[0010]

According to the gate pump equipment of the present invention, the discharge ports of the two main and sub-vertical submersible pumps are connected to a single water discharge port, so that the configuration is simple and can be installed at a low cost without increasing the size. In addition, since the two main and sub-vertical submersible pumps are held in the box-shaped gate body having an open top, it is possible to avoid the flow-down in the water channel from directly hitting the submersible pump, and
When the submersible pump is repaired or replaced, only the main and sub vertical submersible pumps need to be raised and lowered with the gate body remaining in the waterway, so there is no need for large power for lifting and lowering operation and running cost is also advantageous. It is.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view of a gate body in a gate pump facility of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG. 1;

FIG. 3 is a rear view of an elbow-shaped discharge pipe in the gate pump equipment of the present invention.

FIG. 4 is an enlarged cross-sectional view taken along line AA of FIG. 3;

FIG. 5 is a side view showing a state where a vertical submersible pump is connected to the elbow-shaped discharge pipe of FIGS. 3 and 4.

FIG. 6 is a rear view showing a state in which a vertical submersible pump is connected to the elbow-shaped discharge pipe of FIGS. 3 and 4;

FIG. 7 is a vertical sectional side view of a main part in which a vertical submersible pump connected to an elbow-shaped discharge pipe is mounted in a gate body, and shows a state when the pump is raised.

FIG. 8 is a vertical sectional side view of a main part in which a vertical submersible pump connected to an elbow discharge pipe is mounted in a gate body, and shows a state when the pump is lowered.

FIG. 9 is a vertical sectional side view of a main part illustrating a conventional gate pump equipment, showing a state where a submersible pump is raised together with a gate.

FIG. 10 is a vertical sectional side view of a main part of a conventional gate pump equipment, showing a state where a submersible pump is lowered together with a gate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Gate body 1a Inner water side wall surface 1b Outer water side wall surface 2 Intake port 3 Outlet 4 Elbow-shaped discharge pipe 5 Side end opening surface 8a Branched lower opening surface 8b Branched lower opening surface 9a Main pump 9b Sub pump 10a Main pump discharge port 10a Sub pump discharge port 11 Separator 12a Main pump side discharge path 12b Sub pump side discharge path 13a Check valve 13b Check valve 14 Elevating guide 16a Main pump suction port 16b Sub pump suction port

Claims (1)

[Claims] 1. A gate structure having a box-like upper surface opening is provided in a water channel, an intake opening is formed below an inner water wall surface of the gate structure, and a single water outlet is formed above an outer water wall surface of the gate structure. The lower end opening surface of the elbow-shaped discharge pipe formed so that the side end opening surface is detachably opposed to the peripheral surface of the water outlet is bifurcated, and the branched lower end opening surface is formed. The outlets of the two main and sub-vertical submersible pumps are separately connected to each other and integrally connected, and the inside of the elbow-shaped discharge pipe is divided into a main pump side discharge path and a sub pump side discharge path by a separator, and the sections are divided. A check valve is attached to each of the two discharge passages, and a vertical guide vertically installed in the gate body and an engaging member led out from the outer surface of the elbow-shaped discharge pipe are slidably engaged with each other so that the main and auxiliary two The lifting mechanism of the vertical submersible pump is constructed, and the main and sub vertical submersible pumps are When the pump is moved up and down, the pump suction port is lowered to the vicinity of the opening position of the water intake port during the lowering operation, and the side end opening surface of the elbow-shaped discharge pipe is in conduction with the water discharge port. Gate pump equipment characterized in that it is set so as to be spaced above the opening position of the mouth and to have the side end opening surface of the elbow-shaped discharge pipe detached from the peripheral surface of the water outlet and to move upward.