A cofferdam water bag pressure regulator

Abstract

The utility model discloses a cofferdam water bag pressure regulator, including water storage box, be provided with inlet, water distribution mouth, drain and pressure gauge on the water storage box, the inlet is used for connecting the water outlet of booster pump, the water distribution mouth is used for connecting the water filling pressure regulating pipe of cofferdam base water bag, the drain can exclude the water in pressure of booster pump and water bag, the pressure gauge can actually measure different intercommunication circuit water pressure, the drain, inlet and water distribution mouth all are provided with regulating valve. The utility model discloses clever structure, low cost, convenient to use, its integrated inlet, drain and multiple water distribution mouth for connecting water bag, can add water to multiple water bags through a booster pump, need not to invest multiple equipment, greatly reduced equipment investment, in the process of pressurizing and pressure relief to water bag, need not to dismantle / connect pipeline frequently, greatly simplified the water filling pressure regulating operation of cofferdam bottom water bag, improved water bag pressure regulating efficiency.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering construction technology, and in particular to a cofferdam water bag pressure regulator. Background Technology

[0002] After years of operation, water diversion channels may experience localized damage to the channel floor and slope linings due to uneven settlement and other factors. Repairs requiring continuous water supply necessitate the use of cofferdams to create a waterless repair environment. In recent years, various types of steel cofferdams with cross-sectional compensation functions, hydraulically self-stabilizing underwater construction cofferdams, slope-supported gallery cofferdams, semi-submersible cofferdams, prefabricated gate cofferdams, and floating box vertical gate steel cofferdams have been developed for channel lining repair. Regardless of the type of steel cofferdam used, the cofferdam's self-weight and water pressure loads are transmitted to the channel linings through the cofferdam base. When the pressure exceeds the design value, the linings at the cofferdam base may crack.

[0003] In response to the above situation, Chinese patent ZL202420146789.0 discloses a water-bag load transfer structure for the foundation of a channel repair cofferdam. This cofferdam (see...) Figure 1 The lining slab (3') is constructed by splicing multiple arched segments 1' from top to bottom. Each arched segment 1' has a water bladder 2' at its base at both ends. Water is injected into each water bladder 2' to pressurize it, causing the flexible bottom plate of the water bladder 2' to self-deform and make tight contact with the channel floor. Simultaneously, the pressure of the water bladder 2' is evenly distributed to the channel floor, preventing localized overpressure that could cause the lining slab 3' to crack. During construction, the cofferdam is first positioned, and then the water bladder's filling and pressure regulating pipes are connected to a booster pump on the bank. Water is added and pressurized to the corresponding design value based on the water depth of the water bladder. Since the booster pump is manually operated, it is easy to cause under-pressure or over-pressure in the water bladders. For under-pressured water bladders, the booster pump is restarted to increase the pressure inside the water bladder; for over-pressured water bladders, the connection between the filling and pressure regulating pipes and the booster pump needs to be disconnected, and then the branch valves on the filling and pressure regulating pipes need to be opened for drainage and pressure reduction. If under-pressure or over-pressure still occurs, the relevant pipes need to be disassembled / reconnected, and the corresponding operations repeated. Because the water pressure between adjacent water bladders affects each other, this further exacerbates the problem of substandard water pressure in the bladders. Normally, to ensure all water bladders reach their design pressure, repeated pressurization and depressurization are required, making the entire process very cumbersome, time-consuming, and labor-intensive. Summary of the Invention

[0004] To address the aforementioned problems, this utility model provides a low-cost and easy-to-use cofferdam water bladder pressure regulator, specifically employing the following technical solution: The cofferdam water bladder pressure regulator of this utility model includes a water storage box, which is provided with an inlet, an outlet and a branch outlet. The inlet is used to connect to the outlet of the booster pump, and the branch outlet is used to connect to the water filling and pressure regulating pipe of the cofferdam base water bladder. Each of the outlet, inlet and branch outlet is provided with a regulating valve.

[0005] There is one water inlet, at least one water outlet, and several water distribution outlets are provided as needed.

[0006] One end of the regulating valve is fixedly connected to the water storage box, and the other end is provided with a threaded joint for connecting to a pipe.

[0007] The water storage box can be square, round, or irregularly shaped.

[0008] The water storage box is also provided with one or more water outlets that are connected to the water inlets of other water storage boxes.

[0009] The water storage box is equipped with a pressure gauge for measuring the water pressure in the interconnected circuits of each water bladder.

[0010] The cofferdam water bladder pressure regulator provided by this utility model has a clever structure, low cost, and is easy to use. It integrates an inlet, an outlet, and multiple branch outlets for connecting water bladders. Multiple water bladders can be filled and pressurized with water using a single booster pump, eliminating the need for multiple devices and greatly reducing equipment investment. Secondly, because it is equipped with a pressure-relieving outlet and multiple branch outlets can be connected to multiple water bladders simultaneously, pipeline switching can be easily performed by opening and closing the corresponding valves, quickly completing the pressurization and depressurization of the corresponding water bladders. During this process, there is no need to frequently disassemble / connect pipelines, greatly simplifying the water filling and pressure regulation operation of the water bladders at the bottom of the cofferdam. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a channel repair cofferdam structure with a water bladder at its base.

[0012] Figure 2 This is a schematic diagram of the structure of this utility model.

[0013] Figure 3 This is a schematic diagram of the structure of this utility model connected to the cofferdam water bladder. Figure 1 .

[0014] Figure 4 This is a schematic diagram of the structure of this utility model connected to the cofferdam water bladder. Figure 2 . Detailed Implementation

[0015] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific working processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0016] like Figure 2-4 As shown, the cofferdam water bladder pressure regulator of this utility model includes a water storage box 1. The water storage box 1 has multiple interfaces, which can be divided into inlet 2, outlet 3, branch outlet 4, and connecting port 5 according to their different uses. Inlet 2 is used to connect to the outlet of the booster pump; outlet 3 is used to drain water from the water storage box 1; branch outlet 4 is used to connect to the water filling and pressure regulating pipe 6 of the cofferdam base water bladder 2' (the water filling and pressure regulating pipe 6 has no bypass, only two ports); and connecting port 5 is used to connect to the inlet 2 of other water storage boxes 1. To achieve pressure regulation and enable quick and convenient operation, regulating valves 7 are provided on the inlet 2, outlet 3, branch outlet 4, and connecting port 5. One end of each regulating valve 7 is fixedly connected to the water storage box 1, and the other end is provided with a threaded connector for easy pipe connection. To monitor the water pressure value of the water storage box 1 and the interconnected circuits of each cofferdam base water bladder 2' at any time, a pressure gauge 8 is also installed on the water storage box 1. The aforementioned water storage box 1 is used for water storage and only needs to have a certain sealed volume. There are no specific shape restrictions, and it is usually square, round, or irregular in shape. Each water storage box 1 has one water inlet 2, at least one drain outlet 3, and the number of water distribution outlets 4 is set according to the number of water bladders connected. One or more connecting outlets 5 are provided, or none are provided.

[0017] By simultaneously opening the outlet of the booster pump 9 and the regulating valve 7 at any one of the branch ports 4 of the water bladder filling and pressure regulating pipe 6, the corresponding water bladder can be filled with water. When the drain outlet 3 and the regulating valve 7 at the end of any one of the branch ports 4 of the water bladder filling and pressure regulating pipe 6 are opened simultaneously, the pressurized water in the corresponding water bladder can be discharged. When the drain outlet 3 and the regulating valve 7 at the outlet of the booster pump 9 are opened simultaneously, the water in the pump can be discharged.

[0018] This utility model can be used individually or in multiples simultaneously.

[0019] like Figure 3As shown, the water storage box 1 is equipped with one inlet 2, one outlet 3, and seven branch outlets 4. When used alone, the inlet 2 is connected to the outlet of the booster pump 9 via a pipe, and the branch outlets 4 are connected one by one to the water filling and pressure regulating pipes 6 of the seven cofferdam base water bladders 2′. The threaded joint of the regulating valve 7 at the outlet 3 is left unused. When adjusting the pressure of the first cofferdam base water bladder 2′, the regulating valve 7 of the inlet 2 and the branch outlet 4 connected to the first cofferdam base water bladder 2′ is opened, and the other seven regulating valves 7 are closed. Then, the booster pump 9 is started to add water and pressurize the water bladder 2′, and the reading on the pressure gauge 8 is observed. When the design value is reached, the booster pump 9 and the regulating valve 7 of the branch outlet 4 are closed. If, during actual operation, the pressure exceeds the design value due to the pump stopping too late or the influence of adjacent water bladders 2′, the regulating valve 7 at the outlet 3 is opened to drain water and release pressure until the pressure value reaches the standard. The pressure adjustment operation for the other water bladders 2′ is performed in the same way. Since there is no need to disassemble and connect pipelines during the pressurization and depressurization process, the operation steps are greatly simplified, and there is no fear of pressure fluctuations caused by the mutual influence of adjacent water bladders, which greatly improves the pressure regulation efficiency of water bladders.

[0020] like Figure 4 As shown, each water storage box 1 has only seven interfaces, while the cofferdam base water bladder 2′ has seven. Therefore, by using two water storage boxes 1 together, rapid pressure regulation can be achieved. Specifically, the inlet 2 of the first water storage box 1 is connected to the outlet of the booster pump 9 through a pipe. Four interfaces serve as water distribution ports 4, which are connected one-to-one with the water filling and pressure regulating pipes 6 of the four cofferdam base water bladders 2′. One interface is left unused as a drain outlet 3, and another interface serves as a connecting port 5, which is connected to the inlet 2 of the second water storage box 1. The three interfaces of the second water storage box 1 serve as water distribution ports 4, which are connected one-to-one with the water filling and pressure regulating pipes 6 of the remaining three cofferdam base water bladders 2′. The remaining three interfaces on the second water storage box 1 are left unused and can be used as drain outlets 3. Since the connecting port 5 of the first water storage box 1 is connected to the inlet 2 of the second water storage box 1, the water pressure in the two water storage boxes 1 is equal, and they can share a single booster pump 9, thus saving on equipment investment. In use, it is similar to the operation method of using a single water storage box 1. That is, when adding water and pressurizing, turn on the booster pump 9, open the regulating valve 7 of the water inlet 4 connected to the booster pump 9, and open the regulating valve 7 of the water outlet 4 corresponding to the pressurizing water bladder 2′; when depressurizing, according to the principle of proximity, open the regulating valve 7 of the drain outlet 3 of the water storage box 1 that is directly connected to the water filling and pressure regulating pipe 6 of the depressurizing water bladder 2′.

[0021] It should be noted that in the description of this utility model, terms such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", and "outer" indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A pressure regulator for a cofferdam water bladder, characterized in that: It includes a water storage box, which is equipped with an inlet, a drain, and a branch outlet. The inlet is used to connect to the outlet of the booster pump, and the branch outlet is used to connect to the water filling and pressure regulating pipe of the water bladder at the base of the cofferdam. Each of the drain, inlet, and branch outlet is equipped with a regulating valve.

2. The cofferdam water bladder pressure regulator according to claim 1, characterized in that: There is one water inlet, at least one water outlet, and several water distribution outlets are provided as needed.

3. The cofferdam water bladder pressure regulator according to claim 1, characterized in that: One end of the regulating valve is fixedly connected to the water storage box, and the other end is provided with a threaded joint for connecting to a pipe.

4. The cofferdam water bladder pressure regulator according to claim 1, characterized in that: The water storage box can be square, round, or irregularly shaped.

5. The cofferdam water bladder pressure regulator according to claim 1, characterized in that: The water storage box is also provided with one or more water outlets that are connected to the water inlets of other water storage boxes.

6. The cofferdam water bladder pressure regulator according to claim 1, characterized in that: The water storage box is equipped with a pressure gauge for measuring the water pressure in the interconnected circuits of each water bladder.

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