Gravity flow water diversion pipe water shut-off device

Abstract

The utility model relates to water conservancy engineering technical field especially, is a kind of gravity flow water diversion pipe water closing device. The water closing device includes water closing pipe and inflatable water-stopping air bag, water closing pipe is vertically arranged, both sides of water closing pipe are equipped with water inlet, water inlet is used to communicate with gravity flow water diversion pipe, inflatable water-stopping air bag is in the inflation state and is located in water closing pipe, can block the water inlet of both sides, make the water flow in water closing pipe in the state of cutting off. When the downstream valve and related accessories of gravity flow water diversion pipe are maintained and repaired, inflatable water-stopping air bag is placed in water closing pipe, it is inflated, so that it can seal and block the water inlet of both sides of water closing pipe, cut off gravity flow water diversion pipe, discharge the water in downstream section of gravity flow water diversion pipe, downstream valve and related accessories of gravity flow water diversion pipe can be maintained and repaired in waterless environment.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering technology, and in particular to a gravity flow water diversion pipe water shut-off device. Background Technology

[0002] At the end of gravity flow water pipelines, gates or valves are typically installed to effectively control the water flow. Due to actual water intake requirements, the pipeline must be laid below the design low water level, necessitating that maintenance, repair, and even replacement of the pipes, valves, and related accessories be carried out underwater. The complex and unique underwater environment, with its impact from water flow, pressure, and limited visibility, makes these maintenance, repair, and equipment replacement tasks exceptionally difficult. Furthermore, underwater operations inherently carry certain dangers, posing numerous challenges to the safety of construction personnel and the smooth progress of the work. Utility Model Content

[0003] To address the difficulties in maintaining, repairing, and replacing gravity flow water inlet pipelines, downstream valves, and related accessories while they are submerged in water, this invention provides a gravity flow water inlet pipe water shut-off device.

[0004] Therefore, the present invention provides the following technical solution: A gravity flow water inlet pipe water shut-off device includes a water shut-off pipe and an inflatable water-blocking airbag. The water shut-off pipe is vertically arranged, and water inlets are provided on both sides of the water shut-off pipe. The water inlets are used to connect with the gravity flow water inlet pipe. When the water flow in the water shut-off pipe is cut off, the inflatable water-blocking airbag is inflated and located inside the water shut-off pipe, and its sidewalls can cover the water inlets on both sides at the same time.

[0005] Furthermore, the water inlets on both sides of the closed water pipe are located at the same height.

[0006] Furthermore, when the inflatable water-blocking airbag is in the inflatable state, the maximum expansion dimension along the axial direction of the water-blocking pipe is greater than the diameter of the water inlet, and the maximum expansion dimension along the radial direction of the water-blocking pipe is greater than the diameter of the water-blocking pipe.

[0007] Furthermore, a backwash pipe is installed on the closed water pipe, and a backwash control valve is installed at the water inlet end of the backwash pipe.

[0008] Furthermore, connecting pipes are provided on both sides of the closed water pipe and at the water inlet, and the connecting pipes are used to connect to the gravity flow water pipe.

[0009] Furthermore, a concrete support is provided on the downstream side of the closed water pipe, and the connecting pipe on the downstream side of the closed water pipe passes through the concrete support.

[0010] Furthermore, an upper sealing flange is installed at the upper end of the water-sealing pipe, and a lower sealing flange is installed at the lower end.

[0011] Advantages and positive effects of this utility model: When maintenance and repair of the downstream valves and related accessories of the gravity flow water pipe are required, an inflatable water-blocking airbag is placed inside the closed water pipe and inflated to seal and block the water inlets on both sides of the closed water pipe, cutting off the water flow in the gravity flow water pipe and draining the water in the downstream section of the gravity flow water pipe. This allows for maintenance and repair of the downstream valves and related accessories of the gravity flow water pipe in a waterless environment, reducing the difficulty of operation. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 A schematic diagram of the structure of a gravity flow water pipe water-closing device provided by this utility model.

[0014] Figure 2 This utility model provides a schematic diagram of the closed-loop structure of a gravity flow water pipe water-closing device.

[0015] Figure 3 A schematic diagram of the backwashing state structure of a gravity flow water pipe water-closing device provided by this utility model.

[0016] In the diagram: 1. Gravity flow water inlet pipe; 2. Water shut-off pipe; 3. Connecting pipe; 4. Upper sealing flange; 5. Lower sealing flange; 6. Concrete support; 7. Inflatable water-blocking airbag; 8. Downstream control valve; 9. Downstream structure wall; 10. Finished product backwash control valve; 11. Backwash pipe. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0018] This utility model provides a gravity flow water pipe water-closing device, such as Figure 1As shown, the device includes a water-sealing pipe 2 and an inflatable water-blocking airbag 7. The water-sealing pipe 2 is vertically arranged, with water inlets on both sides for connecting to a gravity flow water inlet pipe 1. When the water flow in the water-sealing pipe 2 is cut off, the inflatable water-blocking airbag 7 is inflated and located inside the water-sealing pipe 2, and its sidewalls can simultaneously cover and block the water inlets on both sides. The water inlets on both sides of the water-sealing pipe 2 are at the same height to facilitate water flow. Connecting pipes 3 are installed on both sides of the water-sealing pipe 2 at the water inlets, for connecting to the gravity flow water inlet pipe 1. A concrete support 6 is installed on the downstream side of the water-sealing pipe 2, and the connecting pipe 3 on the downstream side of the water-sealing pipe 2 passes through the concrete support 6. The concrete support 6 improves the stability of the water-sealing device. An upper sealing flange 4 is installed at the upper end of the water-sealing pipe 2, and a lower sealing flange 5 is installed at the lower end of the water-sealing pipe 2.

[0019] When the inflatable water-blocking airbag 7 is in the inflatable state, the maximum expansion dimension along the axial direction of the water-blocking pipe 2 is greater than the diameter of the water inlet, and the maximum expansion dimension along the radial direction of the water-blocking pipe 2 is greater than the pipe diameter of the water-blocking pipe 2.

[0020] like Figure 3 As shown, a backwash pipe 11 is installed on the closed water pipe 2, and a backwash control valve 10 is installed at the inlet end of the backwash pipe 11.

[0021] like Figure 2 As shown, the gravity flow water pipe 1 is laid at an incline from high to low along the terrain. The downstream section of the gravity flow water pipe 1 is set inside the wall of the downstream structure. The shut-off pipe 2 is set in the upstream section of the gravity flow water pipe 1. The connecting pipes 3 on both sides of the shut-off pipe 2 are connected to the corresponding gravity flow water pipe 1. The downstream section of the gravity flow water pipe 1 passes through the wall 9 of the downstream structure. The downstream outlet of the gravity flow water pipe 1 is equipped with a downstream control valve 8.

[0022] Working principle: When maintenance and repair are required on the downstream section valves and accessories of gravity flow water pipe 1, such as... Figure 2 As shown, an inflatable water-blocking airbag 7 is placed inside the water-sealing pipe 3 and inflated, causing it to expand and block the water inlet. This cuts off the water flow in the gravity flow water pipe 1, and the water in the gravity flow water pipe 1 is released through the downstream control valve 8. This allows for maintenance and repair of the valves and accessories in the downstream section of the gravity flow water pipe 1 without water, reducing the difficulty of operation. After maintenance, the inflatable water-blocking airbag 7 is deflated and removed.

[0023] like Figure 3As shown, when backwashing is required for the gravity flow water inlet pipe 1, it is connected to the backwash water pump through the backwash pipe 11 and controlled by the finished product backwash control valve 10. After the backwash water is pumped in, the water flushes the upstream section of the gravity flow water inlet pipe 1 in the opposite direction to the water flow inside the gravity flow water inlet pipe 1, removing impurities, deposits or blockages accumulated inside the gravity flow water inlet pipe 1, and restoring its normal function and operating efficiency.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A gravity flow water inlet pipe water-sealing device, characterized in that, It includes a water-sealing pipe (2) and an inflatable water-blocking airbag (7). The water-sealing pipe (2) is vertically arranged, and water inlets are provided on both sides of the water-sealing pipe (2). The water inlets are used to connect with the gravity flow water inlet pipe (1). When the water flow in the water-sealing pipe (2) needs to be cut off, the inflatable water-blocking airbag (7) is in an inflated state and located inside the water-sealing pipe (2), and its sidewall can cover the water inlets on both sides at the same time.

2. The gravity flow water pipe water-closing device according to claim 1, characterized in that, The water inlets on both sides of the closed water pipe (2) are at the same height.

3. The gravity flow water pipe water-closing device according to claim 1, characterized in that, When the inflatable water-blocking airbag (7) is in the inflatable state, the maximum expansion size along the axial direction of the water-blocking pipe (2) is greater than the diameter of the water inlet, and the maximum expansion size along the radial direction of the water-blocking pipe (2) is greater than the pipe diameter of the water-blocking pipe (2).

4. The gravity flow water pipe water-closing device according to claim 1, characterized in that, A backwash pipe (11) is installed on the closed water pipe (2), and a backwash control valve (10) is installed at the inlet end of the backwash pipe (11).

5. A gravity flow water pipe water-closing device according to claim 1, characterized in that, Connecting pipes (3) are provided at the water inlets on both sides of the closed water pipe (2), and the connecting pipes (3) are used to connect to the gravity flow water pipe (1).

6. A gravity flow water inlet pipe water-closing device according to claim 5, characterized in that, A concrete support (6) is provided on the downstream side of the water-sealing pipe (2), and the connecting pipe (3) on the downstream side of the water-sealing pipe (2) passes through the concrete support (6).

7. The gravity flow water pipe water-closing device according to claim 1, characterized in that, The upper end of the water-sealing pipe (2) is fitted with an upper sealing flange (4), and the lower end is fitted with a lower sealing flange (5).

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