Well sealing device for dewatering well under high water pressure
By combining a well cap, pipe fittings, and valves, the problems of poor welding and leakage in high-pressure downwelling wells are solved, achieving a leak-free well sealing effect. The structure is simple and low-cost.
Patent Information
- Application Number
- CN202423320869.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Under high water pressure, traditional dewatering well sealing methods suffer from poor welding and leakage risks, especially when constructing near water, where water overflow affects welding quality.
The well is sealed by a combination of a well cap, a first fitting, a second fitting, a first valve, and a second valve. The well is sealed by welding under high water pressure through pumping and grouting. Pumping is done first, followed by grouting, to ensure the sealing effect.
It achieves a leak-free well sealing effect under high water pressure, with a simple structure and low cost, making it suitable for large-scale promotion and application.
Smart Images
Figure CN223824212U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of building construction, especially the technical field of dewatering well sealing technology, and specifically relates to a dewatering well sealing device under high water pressure. BACKGROUND
[0002] Building construction refers to the production activity in the implementation stage of engineering construction, is the building process of all kinds of buildings, and can also be said to be the process of changing various lines on design drawings into real objects at specified sites. It includes foundation engineering construction, main structure construction, roof engineering construction, decoration engineering construction and the like.
[0003] In the building construction process, when the main structure is completed for sealing operation, the traditional sealing method is to backfill concrete, and then to weld the well mouth with a steel plate, so as to seal the dewatering well to achieve the purpose of water isolation.
[0004] However, since ancient times, people like to live near water, and villages develop into cities, and cities develop into larger cities. Large cities are usually built with high-rise buildings and skyscrapers. As is well known, the higher the building, the deeper the foundation pit to ensure the stability of the building. The water pressure at the foundation bottom is greater. Especially in the area less than 50 meters away from the river, lake, sea and other water edges, the groundwater not only has great pressure, but also has very sufficient flow. When the main structure is completed for sealing operation, the traditional sealing method cannot be used for sealing when the steel plate is welded. The water with sufficient amount and pressure overflows, and the welding place cannot be dried for operation, so that the welding is poor, causing water leakage hidden trouble.
[0005] Therefore, it is desirable to provide a dewatering well sealing device under high water pressure, which can be used for welding and sealing the dewatering well under high water pressure, and has no leakage hidden trouble. CONTENT OF THE UTILITY MODEL
[0006] In order to overcome the above-mentioned defects in the prior art, one object of the utility model is to provide a dewatering well sealing device under high water pressure, which can be used for welding and sealing the dewatering well under high water pressure, and has no leakage hidden trouble, and is suitable for large-scale popularization and application.
[0007] Another object of the utility model is to provide a dewatering well sealing device under high water pressure, which is ingenious in design, simple in structure, simple in manufacturing, low in manufacturing cost, and suitable for large-scale popularization and application.
[0008] In order to achieve the above objects, the utility model provides a dewatering well sealing device under high water pressure, which is characterized by comprising a sealing cap, a first pipe fitting, a second pipe fitting, a first valve and a second valve, wherein:
[0009] The well sealing cap is used for covering and welding on the well mouth of the dewatering well, the lower end of the first pipe and the lower end of the second pipe are inserted in the well sealing cap, and the first valve and the second valve are arranged in the first pipe and the second pipe respectively.
[0010] Preferably, the well sealing cap is a cover plate.
[0011] More preferably, the cover plate is a steel plate.
[0012] More preferably, the cover plate is a round plate.
[0013] Preferably, the first pipe and the second pipe are both rigid pipes.
[0014] More preferably, the first pipe and the second pipe are both vertically arranged.
[0015] More preferably, the first pipe and the second pipe are arranged left and right with each other.
[0016] More preferably, the rigid pipe is a steel pipe.
[0017] Preferably, the first valve and the second valve are both manual valves.
[0018] Preferably, the first valve and the second valve are both electric valves.
[0019] The beneficial effects of the utility model mainly lie in:
[0020] 1. The well sealing device under high water pressure of the utility model comprises a well sealing cap, a first pipe, a second pipe, a first valve and a second valve, the well sealing cap is used for covering and welding on the well mouth of the dewatering well, the lower end of the first pipe and the lower end of the second pipe are inserted in the well sealing cap, the first valve and the second valve are arranged in the first pipe and the second pipe respectively, when sealing, the first valve and the second valve are opened, the dewatering pipe is inserted into the second pipe to continue pumping, the well sealing cap and the well mouth of the dewatering well are welded at the same time of pumping, the dewatering pipe is pulled out after welding, the grouting pipe is inserted into the first pipe to carry out grouting, the first valve and the second valve are closed after grouting, the waterway is cut off to achieve the purpose of sealing, therefore, it can seal the dewatering well under high water pressure, and there is no leakage hidden danger, and it is suitable for large-scale popularization and application.
[0021] 2. The high-pressure dewatering well sealing device of this utility model includes a sealing cap, a first pipe fitting, a second pipe fitting, a first valve, and a second valve. The sealing cap is used to cover and weld onto the wellhead of the dewatering well. The lower ends of the first and second pipe fittings are both inserted into the sealing cap. The first and second valves are respectively located in the first and second pipe fittings. When sealing the well, the first and second valves are opened, and the dewatering pipe is inserted into the second pipe fitting to continue pumping water. While pumping water, the sealing cap and the wellhead of the dewatering well are welded. After welding, the dewatering pipe is pulled out, and the grouting pipe is inserted into the first pipe fitting for grouting. After grouting is completed, the first and second valves are closed to cut off the water supply and achieve the purpose of sealing the well. Therefore, its design is ingenious, its structure is simple, its manufacturing is convenient, and its manufacturing cost is low, making it suitable for large-scale promotion and application.
[0022] These and other objects, features and advantages of this utility model will be fully apparent from the following detailed description and drawings, and can be achieved by the means, devices and combinations thereof specifically pointed out in the description of the utility model. Attached Figure Description
[0023] Figure 1 This is a three-dimensional schematic diagram of a specific embodiment of the dewatering well sealing device under high water pressure of this utility model.
[0024] Figure 2 This is a 3D perspective diagram of a dewatering well that needs to be sealed.
[0025] Figures 3-5 Is using Figure 1 The specific embodiments shown are for Figure 2 The diagram shows a three-dimensional perspective view of the sealing process of a dewatering well.
[0026] (Symbol Explanation)
[0027] 1. Well cap; 2. First fitting; 3. Second fitting; 4. First valve; 5. Second valve; 6. Dewatering well; 7. Foundation slab; 8. Dewatering pipe; 9. Grouting pipe; 10. Impermeable micro-expansion concrete. Detailed Implementation
[0028] In order to better understand the technical content of this utility model, the following embodiments are provided for detailed description.
[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship 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.
[0030] Please see Figure 1 As shown, in a specific embodiment of this utility model, the well sealing device for dewatering wells under high water pressure includes a well cap 1, a first pipe fitting 2, a second pipe fitting 3, a first valve 4, and a second valve 5, wherein:
[0031] The well cap 1 is used to cover and weld onto the dewatering well 6 (see...). Figure 2 On the wellhead (as shown), the lower ends of the first pipe fitting 2 and the second pipe fitting 3 are both inserted into the well cap 1, and the first valve 4 and the second valve 5 are respectively installed in the first pipe fitting 2 and the second pipe fitting 3.
[0032] The well cap 1 can have any suitable shape, please refer to Figure 1 As shown, in a specific embodiment of this utility model, the well cap 1 is a cover plate.
[0033] The cover plate can be made of any suitable material. In one specific embodiment of this utility model, the cover plate is a steel plate.
[0034] The cover plate can have any suitable shape; please refer to [link / reference]. Figure 1 As shown, in a specific embodiment of this utility model, the cover plate is a circular plate.
[0035] The first pipe fitting 2 and the second pipe fitting 3 can be rigid pipe fittings or flexible pipe fittings. "Flexible" means that an object can deform when subjected to force, while "rigid" means that it is hard and does not easily change when subjected to force (as opposed to "flexible"). In a specific embodiment of this utility model, the first pipe fitting 2 and the second pipe fitting 3 are both rigid pipe fittings.
[0036] The first fitting 2 and the second fitting 3 can be installed in any suitable direction; please refer to [link / reference]. Figure 1 As shown, in a specific embodiment of this utility model, both the first pipe fitting 2 and the second pipe fitting 3 are arranged vertically.
[0037] The first fitting 2 and the second fitting 3 can have any suitable positional relationship; please refer to [link / reference]. Figure 1 As shown, in a specific embodiment of this utility model, the first pipe fitting 2 and the second pipe fitting 3 are arranged at intervals from each other on the left and right.
[0038] The rigid pipe fitting can be made of any suitable material. In one specific embodiment of this utility model, the rigid pipe fitting is a steel pipe.
[0039] The first valve 4 and the second valve 5 can be any suitable valve. In one specific embodiment of this utility model, both the first valve 4 and the second valve 5 are manual valves. Obviously, both the first valve 4 and the second valve 5 can also be electric valves.
[0040] 6 dewatering wells that need to be sealed Figure 2 As shown, when well sealing is required:
[0041] 1. Open the first valve 4 and the second valve 5, pass the downpipe 8 through the second fitting 3 of this utility model and insert it into the downpipe well 6, and carry out downpipe drainage through the downpipe 8;
[0042] 2. When the water level drops to 20cm below the welding joint (the wellhead of dewatering well 6), welding can begin. Place the well cap 1 of this invention on the wellhead of dewatering well 6 and weld the well cap 1 to the wellhead of dewatering well 6. Figure 3 As shown, the requirement is full soldering with no leaks;
[0043] 3. After welding is completed, grouting can be performed. Insert the grouting pipe 9 into the first fitting 2 and then into the dewatering well 6 until it reaches the bottom of the well. Pull out the dewatering pipe 8 and begin grouting through the grouting pipe 9. Figure 4 As shown, during grouting, the grouting pipe 9 is raised as the grouting liquid level rises. At this time, the water in the dewatering well 6 will flow out from the second pipe fitting 3.
[0044] 4. When grout flows out of the second fitting 3, close the second valve 5 and continue grouting until grout begins to flow out of the first fitting 2. Then, pull out the grouting pipe 9, close the first valve 4, and complete the grouting operation.
[0045] 5. Pour 10 tons of impermeable, micro-expansion concrete with a strength one grade higher than that of the foundation slab. Figure 5 As shown, moisturize and nourish for 14 days.
[0046] Therefore, by adopting this utility model, during well sealing operations, the first and second valves are opened, the dewatering pipe is inserted into the second fitting to continue pumping water, and welding is performed simultaneously with water pumping, thus avoiding the problem of welding being impossible due to rising water levels. After welding is completed, the dewatering pipe is pulled out, and the grouting pipe is inserted into the first fitting for grouting. After grouting is completed, the first and second valves are closed to cut off the water supply and achieve the purpose of well sealing.
[0047] This utility model uses a first pipe and a second pipe for pumping and grouting. Welding is carried out simultaneously with dewatering. After welding is completed, grouting is performed. Once grouting is completed, the first and second pipes are shut off through the first and second valves to prevent water from overflowing, thereby achieving the purpose of sealing the dewatering well.
[0048] This utility model is a well sealing device for deep foundation pits in water-rich areas under high water pressure. It is used when normal construction methods cannot be used to seal the well under high water pressure and water-rich soil conditions. It is designed to address the characteristics of high water pressure in deep foundation pits in water-rich areas, enabling the dewatering well to be successfully sealed and welded, ultimately achieving the purpose of sealing the well and preventing water leakage.
[0049] This invention, by employing the above-described technical solution, can solve the problem of water seepage from dewatering wells preventing welding for sealing. Furthermore, it also has a significant effect on other wells that cannot be sealed due to pressure issues.
[0050] In summary, the dewatering well sealing device of this utility model under high water pressure can weld and seal dewatering wells under high water pressure without any leakage risk. It has an ingenious design, simple structure, easy manufacturing, and low manufacturing cost, making it suitable for large-scale promotion and application.
[0051] Therefore, it is evident that the objective of this utility model has been fully and effectively achieved. The function and structural principles of this utility model have been demonstrated and explained in the embodiments. Without departing from the stated principles, any modifications can be made to the implementation methods. Therefore, this utility model includes all modified embodiments based on the spirit and scope of the claims.
Claims
1. A sealing device for a dewatering well under high water pressure, characterized in that, Includes a well cap, a first fitting, a second fitting, a first valve, and a second valve, wherein: The well cap is used to cover and weld onto the wellhead of the dewatering well. The lower ends of the first pipe fitting and the second pipe fitting are both inserted into the well cap. The first valve and the second valve are respectively installed in the first pipe fitting and the second pipe fitting.
2. The well sealing device for dewatering wells under high water pressure as described in claim 1, characterized in that, The well cap is a cover plate.
3. The well sealing device for dewatering wells under high water pressure as described in claim 2, characterized in that, The cover plate is made of steel.
4. The well sealing device for dewatering wells under high water pressure as described in claim 2, characterized in that, The cover plate is a circular plate.
5. The well sealing device for dewatering wells under high water pressure as described in claim 1, characterized in that, Both the first and second pipe fittings are rigid pipe fittings.
6. The well sealing device for dewatering wells under high water pressure as described in claim 5, characterized in that, Both the first and second pipe fittings are vertically arranged.
7. The well sealing device for dewatering wells under high water pressure as described in claim 5, characterized in that, The first pipe fitting and the second pipe fitting are arranged at intervals on the left and right.
8. The well sealing device for dewatering wells under high water pressure as described in claim 5, characterized in that, The rigid pipe fitting is a steel pipe.
9. The well sealing device for dewatering wells under high water pressure as described in claim 1, characterized in that, Both the first valve and the second valve are manual valves.
10. The well sealing device for dewatering wells under high water pressure as described in claim 1, characterized in that, Both the first valve and the second valve are electric valves.