Waterproof device for open water collecting well

Abstract

The utility model relates to a prevent water device for water collecting well open air, including first connecting section, second connecting section, third connecting section, first electric butterfly valve, second electric butterfly valve, drain pipe and water level sensing component, the first connecting section verticality is arranged, and the bottom of first connecting section is provided with the insertion interface, the second connecting section verticality is arranged in one side of first connecting section and is provided with interval, the third connecting section is S type structure, and the both ends of third connecting section are connected the top of first connecting section and the bottom of second connecting section respectively, the drain pipe is set up below third connecting section and is communicated with the lowest point of third connecting section side close to second connecting section, the first electric butterfly valve is set up in the top of second connecting section, and the second electric butterfly valve is set up in the inside of drain pipe, the utility model can start automatically and close ventilation in time in rainy day.

Description

Technical Field

[0001] This utility model relates to the field of water ingress prevention technology, specifically a water ingress prevention device for air-filled water collection wells. Background Technology

[0002] In the operation and maintenance of industrial plants such as hydropower stations and pumping stations, water collection wells (especially sewage collection wells) are a common type of confined space. Before any maintenance work is carried out inside them, strict safety procedures must be followed, the most important of which is ventilation. According to regulations, such confined spaces must be continuously ventilated for at least three days to completely remove any toxic, harmful, and flammable gases accumulated inside the well, ensuring the safety of the workers.

[0003] However, during the long ventilation process, sudden heavy rain can pose serious safety hazards. The traditional approach is to immediately dispatch personnel to the site once it rains to manually close the heavy manhole cover to prevent rainwater from rushing in. After the rain stops, the manhole cover is reopened for ventilation. This method has significant drawbacks: firstly, it is difficult to respond promptly to sudden rainfall at night or when no one is on duty, leading to rainwater entering the manhole; secondly, frequent manual opening and closing of the manhole cover is not only inefficient but also increases the workload and safety risks for personnel.

[0004] More seriously, the large influx of rainwater can cause the water level in the collection well to rise rapidly. If the collection well is connected to the drainage pipes of facilities such as toilets inside the factory, there is a significant risk that well water could backflow into the factory through the pipes, potentially leading to serious consequences such as equipment flooding and production interruption. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model provides a water-proof device for ventilating water collection wells, so as to solve the problem that it is difficult to achieve an efficient and reliable automatic balance between the two contradictory requirements of ventilation and waterproofing in the existing technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a water-proof device for preventing air leakage in a water collection well, comprising a first connecting section, a second connecting section, a third connecting section, a first electric butterfly valve, a second electric butterfly valve, a drain pipe, and a water level sensing component. The first connecting section is vertically arranged, and a connector is provided at its bottom. The second connecting section is vertically arranged on one side of the first connecting section and is spaced apart. The third connecting section has an S-shaped structure, with its two ends connected to the top of the first connecting section and the bottom of the second connecting section, respectively. The drain pipe is located below the third connecting section and communicates with the lowest point of the third connecting section near the second connecting section. The first electric butterfly valve is located at the top of the second connecting section, and the second electric butterfly valve is located inside the drain pipe. The water level sensing component is located inside the third connecting section for detecting the water level height inside the third connecting section.

[0007] The working principle of this utility model is as follows: This utility model forms a water seal in the S-shaped bend of the third connecting section, uses a water level sensor to monitor the water level in the S-shaped bend in real time, and automatically controls the opening and closing of the first electric butterfly valve and the second electric butterfly valve, thereby realizing the dual functions of continuous ventilation of the water collection well and automatic waterproofing in rainy weather.

[0008] Preferably, the water level sensing component includes a first sensor and a second sensor. The first sensor is located on the lower part of the third connecting section near the drain pipe, and the second sensor is located on the upper part of the inner wall of the third connecting section near the drain pipe. The first sensor, the second sensor, and the first and second electric butterfly valves are electrically connected.

[0009] Preferably, a sealing rubber ring is provided at the bottom of the first connecting section.

[0010] Preferably, the bottom of the first connecting section is provided with a docking section, the bottom of the docking section is adapted to the size of the wellhead of the water collection well, and a number of vertically arranged inserts are arranged around the bottom of the docking section.

[0011] Preferably, the first electric butterfly valve and the second electric butterfly valve are equipped with a manual operating mechanism.

[0012] Preferably, the first and second sensors are float-type sensors or electronic sensors.

[0013] Preferably, the outlet end of the drain pipe is connected to the discharge pipe network.

[0014] Preferably, the insertion rod has a conical or wedge-shaped structure.

[0015] Preferably, the first connecting segment, the second connecting segment, and the third connecting segment are all made of corrosion-resistant materials.

[0016] Preferably, the two ends of the third connecting segment are threaded to the top of the first connecting segment and the bottom of the second connecting segment, respectively.

[0017] Compared with the prior art, the technical solution of this application has the following technical effects: 1. The water level in the third connecting section of the S-type structure is monitored in real time by a water level sensor, and the first electric butterfly valve (ventilation) and the second electric butterfly valve (drainage) are controlled in conjunction. The system can automatically start drainage in rainy weather and shut down ventilation in a timely manner, which effectively solves the problems of slow response and low efficiency of traditional manual operation, and ensures the continuity and safety of the ventilation process.

[0018] 2. Utilizing the S-shaped structure of the third connecting section, a physical water seal is naturally formed inside the device. This ensures smooth gas exhaust during normal ventilation and acts as a buffer and water reservoir during water ingress. This integrated design combines ventilation, waterproofing, and drainage functions into one compact structure, eliminating the need for additional complex external systems.

[0019] 3. The device can respond quickly to rainfall and automatically prevent rainwater from flooding into the collection well, fundamentally avoiding the risk of water level in the collection well rising and backflowing into the plant through connecting pipes, thus ensuring the safety of plant equipment and operation.

[0020] 4. The device can be quickly installed at the water collection wellhead through the plug interface at the bottom of the first connecting section. It is flexible in deployment and is particularly suitable for confined space scenarios that require temporary ventilation operations, which significantly reduces the labor intensity and operational risks of personnel. Attached Figure Description

[0021] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Figure 1 This is an external schematic diagram of the present invention.

[0023] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0024] In the diagram: 1. First connecting section; 2. Second connecting section; 3. Third connecting section; 4. Drain pipe; 5. First electric butterfly valve; 6. Connecting section; 7. Insert rod; 8. First sensor; 9. Second sensor; 10. Second electric butterfly valve. Detailed Implementation

[0025] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0026] like Figure 1 , 2 As shown, a water-prevention device for preventing air leakage in a water collection well includes a first connecting section 1, a second connecting section 2, a third connecting section 3, a first electric butterfly valve 5, a second electric butterfly valve 10, a drain pipe 4, and a water level sensing component. The first connecting section 1 is vertically arranged and has a connector at its bottom. The second connecting section 2 is vertically arranged on one side of the first connecting section 1 and has a gap. The third connecting section 3 has an S-shaped structure, with its two ends connected to the top of the first connecting section 1 and the bottom of the second connecting section 2, respectively. The drain pipe 4 is located below the third connecting section 3 and communicates with the lowest point of the third connecting section 3 near the second connecting section 2. The first electric butterfly valve 5 is located at the top of the second connecting section 2, and the second electric butterfly valve 10 is located inside the drain pipe 4. The water level sensing component is located inside the third connecting section 3 and is used to detect the water level inside the third connecting section 3.

[0027] Preferably, the water level sensing component includes a first sensor 8 and a second sensor 9. The first sensor 8 is located on the lower part of the third connecting section 3 near the drain pipe 4, and the second sensor 9 is located on the upper part of the inner wall of the third connecting section 3 near the drain pipe 4. The first sensor 8, the second sensor 9, and the first electric butterfly valve 5 and the second electric butterfly valve 10 are electrically connected. In this embodiment, sensors at different heights are set in the S-shaped connecting section to achieve hierarchical control: drainage is automatically opened when the water level is low, and ventilation is automatically closed when the water level is high, thereby intelligently and effectively preventing rainwater backflow while ensuring normal ventilation of the collection well.

[0028] Under normal ventilation conditions, first insert the rod 7 at the bottom of the device into the stop at the wellhead of the water collection well for fixation. At this time, the second electric butterfly valve 10 is in the closed state, while the first electric butterfly valve 5 is open, ensuring that the gas in the water collection well can be smoothly discharged upwards, achieving continuous ventilation.

[0029] In case of rainfall, rainwater will enter the S-shaped structure of the third connecting section 3 from the air outlet and accumulate. When the water level rises to the upper limit, the first sensor 8 activates, automatically opening the second electric butterfly valve 10 to initiate drainage. If the rainfall is light, the water accumulated in the S-shaped structure can be drained smoothly, and then the second electric butterfly valve 10 closes, allowing ventilation operations to continue unaffected.

[0030] If the rainfall is heavy and the drainage is insufficient, the water level inside the S-shaped structure will continue to rise to the trigger position of the second sensor 9. The second sensor 9 will then activate and control the first electric butterfly valve 5 to close, suspending the ventilation operation of the water collection well and effectively preventing a large amount of rainwater from entering.

[0031] After the heavy rain stops, ventilation can be restored by reopening the first electric butterfly valve 5 until the prescribed ventilation time is completed.

[0032] Preferably, a sealing rubber ring is provided at the bottom of the first connecting section 1. Providing a sealing rubber ring at the bottom of the first connecting section 1 effectively enhances the seal between the device and the wellhead, preventing rainwater from seeping in through the interface gaps.

[0033] Preferably, the bottom of the first connecting section 1 is provided with a docking section 6, the bottom of which is adapted to the size of the wellhead of the water collection well, and a plurality of vertically arranged insert rods 7 are arranged around the bottom of the docking section 6. By setting the docking section 6 adapted to the size of the wellhead and the surrounding vertical insert rods 7, the device can be quickly and accurately positioned and firmly fixed, effectively preventing the device from shifting or tipping over during operation, and improving installation efficiency and operational reliability. In this embodiment, the bottom opening of the docking section 6 is rectangular.

[0034] Preferably, the first electric butterfly valve 5 and the second electric butterfly valve 10 are equipped with manual operating mechanisms. These mechanisms ensure reliable operation of the valves in the event of a malfunction or power outage in the automatic control system. A handwheel or handle is mounted on the valve stem.

[0035] Preferably, the first sensor 8 and the second sensor 9 are float-type sensors or electronic sensors.

[0036] Preferably, the outlet end of the drain pipe 4 is connected to the discharge pipe network.

[0037] Preferably, the insertion rod 7 has a conical or wedge-shaped structure. The conical or wedge-shaped structure, with its inclined surface guiding effect, enables rapid and accurate alignment and installation of the device.

[0038] Preferably, the first connecting segment 1, the second connecting segment 2, and the third connecting segment 3 are all made of corrosion-resistant material. In this embodiment, the corrosion-resistant material is stainless steel.

[0039] Preferably, the two ends of the third connecting segment 3 are threaded to the top of the first connecting segment 1 and the bottom of the second connecting segment 2, respectively. The threaded connection enhances the assembly flexibility and sealing performance of the third connecting segment 3 with the first connecting segment 1 and the second connecting segment 2, while also facilitating disassembly and maintenance.

[0040] 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 this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A water-prevention device for preventing air ingress into a water collection well, characterized in that: The system includes a first connecting section (1), a second connecting section (2), a third connecting section (3), a first electric butterfly valve (5), a second electric butterfly valve (10), a drain pipe (4), and a water level sensing component. The first connecting section (1) is vertically arranged and has a plug-in interface at its bottom. The second connecting section (2) is vertically arranged on one side of the first connecting section (1) and has a gap. The third connecting section (3) has an S-shaped structure, with its two ends connected to the top of the first connecting section (1) and the bottom of the second connecting section (2), respectively. The drain pipe (4) is located below the third connecting section (3) and communicates with the lowest point of the third connecting section (3) near the second connecting section (2). The first electric butterfly valve (5) is located at the top of the second connecting section (2), and the second electric butterfly valve (10) is located inside the drain pipe (4). The water level sensing component is located inside the third connecting section (3) and is used to detect the water level inside the third connecting section (3).

2. The anti-water-ingress device for air-filled water collection wells according to claim 1, characterized in that: The water level sensing assembly includes a first sensor (8) and a second sensor (9). The first sensor (8) is located on the lower part of the third connecting section (3) near the drain pipe (4), and the second sensor (9) is located on the upper part of the inner wall of the third connecting section (3) near the drain pipe (4). The first sensor (8), the second sensor (9), the first electric butterfly valve (5), and the second electric butterfly valve (10) are electrically connected.

3. A water-prevention device for preventing air ingress into a water collection well according to claim 1, characterized in that: A sealing rubber ring is provided at the bottom of the first connecting section (1).

4. A water-prevention device for preventing air ingress into a water collection well according to claim 1, characterized in that: The bottom of the first connecting section (1) is provided with a docking section (6), the bottom of the docking section (6) is adapted to the size of the wellhead of the water collection well, and a number of vertically arranged insert rods (7) are arranged around the bottom of the docking section (6).

5. A water-prevention device for preventing air ingress into a water collection well according to claim 1, characterized in that: The first electric butterfly valve (5) and the second electric butterfly valve (10) are equipped with manual operation mechanisms.

6. A water-prevention device for preventing air ingress into a water collection well according to claim 2, characterized in that: The first sensor (8) and the second sensor (9) are float-type sensors or electronic sensors.

7. A water-prevention device for preventing air ingress into a water collection well according to claim 1, characterized in that: The outlet end of the drain pipe (4) is connected to the discharge network.

8. A water-prevention device for preventing air ingress into a water collection well according to claim 4, characterized in that: The insertion rod (7) has a conical or wedge-shaped structure.

9. A water-prevention device for preventing air ingress into a water collection well according to claim 1, characterized in that: The first connecting segment (1), the second connecting segment (2) and the third connecting segment (3) are all made of corrosion-resistant materials.

10. A water-prevention device for preventing air ingress into a water collection well according to claim 1, characterized in that: The two ends of the third connecting segment (3) are respectively threaded to the top of the first connecting segment (1) and the bottom of the second connecting segment (2).

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