Safe and reliable water conveyance project drain valve overhaul well structure and matched building thereof

Abstract

The utility model provides a safe and reliable water delivery project drain valve overhaul well structure which is arranged on one side of a water delivery pipeline, a branch pipe of a drain tee joint of the water delivery pipeline is provided with a drain valve, the overhaul well structure comprises a dry chamber vertical shaft and a wet chamber vertical shaft which are arranged side by side, the branch pipe penetrates through the dry chamber vertical shaft in a sealed mode, and a water outlet of the branch pipe is communicated with the wet chamber vertical shaft. The drainage valve is arranged in the section, located in the dry chamber vertical shaft, of the branch pipe, a maintenance ventilation opening is formed in the top of the dry chamber vertical shaft, an emergency flood drainage opening and an overflow opening are formed in the top of the wet chamber vertical shaft, and the maintenance ventilation opening, the emergency flood drainage opening and the overflow opening are sequentially arranged from high to low according to the horizontal height sequence; the overflow port is communicated with the outside through an overflow pipeline; the utility model further provides a safe and reliable building matched with the overhaul well structure of the drain valve of the water conveyance project. The building comprises the overhaul well structure and a house body building. Under the condition that the safety of maintainers is guaranteed and the operation is convenient, the safety and reliability of the drain valve overhaul well structure and the equipment thereof are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of drainage valve inspection wells for water conveyance projects and water conveyance project construction, specifically to a safe and reliable structure for drainage valve inspection wells for water conveyance projects and its supporting buildings. Background Technology

[0002] Over the years, my country's water diversion projects have developed rapidly. In recent years, the number of long-distance, high-flow regional water diversion projects has also increased, many of which are long-distance water transmission projects using large-diameter pipelines. After long-term operation, these pipelines may experience siltation, biofouling, and internal wall damage. Some older projects, due to the inability or inconvenience of long-term maintenance, have resulted in water flow capacity failing to meet original design requirements. Therefore, long-distance water transmission projects using large-diameter pipelines require the installation of auxiliary structures along the pipeline route for maintenance, drainage, ventilation, and sludge removal.

[0003] While existing drainage valve inspection well structures can assist in the inspection of water pipelines in water supply projects, they cannot guarantee the safety and reliability of the inspection well and related equipment in the auxiliary buildings above it in cases of excessively high water head in the pipeline or abnormal drainage valves, and the safety of inspection is relatively low. Utility Model Content

[0004] In view of this, it is necessary to propose a safe and reliable structure for the maintenance well of the drainage valve in a water conveyance project and its supporting buildings, in order to overcome some of the shortcomings of the aforementioned background technology and solve the following technical problems:

[0005] How to improve the safety and reliability of the drainage valve inspection well structure and its equipment while ensuring the safety and convenience of maintenance personnel?

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model proposes a safe and reliable drainage valve inspection well structure for water conveyance projects. It is installed on one side of the water conveyance pipeline of the project. A drainage valve is installed on the branch pipe of the drainage tee of the water conveyance pipeline. The drainage valve inspection well structure includes a dry chamber shaft and a wet chamber shaft arranged side-by-side. Both the dry and wet chamber shafts are concrete structures. The branch pipe passes through the dry chamber shaft in a sealed manner, and its outlet leads into the wet chamber shaft. The drainage valve is installed in the section of the branch pipe located inside the dry chamber shaft. The top of the dry chamber shaft has a maintenance ventilation opening, and the top of the wet chamber shaft has an emergency flood discharge outlet and an overflow outlet. The outlets are arranged from highest to lowest horizontally as follows: maintenance ventilation opening, emergency flood discharge outlet, and overflow outlet. The overflow outlet is connected to the outside via an overflow pipe.

[0008] The maintenance ventilation opening is used for personnel passage and ventilation; the maintenance ventilation opening is detachably equipped with a safety protection mechanism to prevent personnel from falling into the dry chamber shaft from the maintenance ventilation opening without affecting the ventilation of the maintenance ventilation opening;

[0009] Emergency flood discharge outlets are used for emergency flood discharge when the overflow outlet cannot discharge water exceeding the overflow outlet in a timely manner;

[0010] The overflow outlet is used to discharge water overflowing from the wet chamber shaft to the outside through an overflow pipe.

[0011] Furthermore, the safety protection mechanism is a first safety protection grating plate, which is used to facilitate ventilation and observation of the interior of the dry chamber shaft.

[0012] Furthermore, the safety protection mechanism is a detachable movable fence, which encloses the area around the maintenance ventilation opening.

[0013] Furthermore, the structure of the drainage valve inspection well in this water conveyance project also includes:

[0014] A water pump installed in the dry chamber shaft is sealed into the wet chamber shaft through an inlet pipe. The water pump is connected to the outside through a channel and is used to pump out the water accumulated in the wet chamber shaft and the water supply pipe.

[0015] Furthermore, the channel is located in the wet chamber shaft and is connected to the overflow outlet; the channel is provided with an overflow weir, or the channel is an overflow weir; the overflow weir is used to prevent external floodwater from flowing back into the wet chamber shaft through the overflow pipe, and to block the water gushing out from the outlet of the water pump from flowing back into the wet chamber shaft, thereby allowing the accumulated water in the wet chamber shaft to flow into the overflow outlet.

[0016] Furthermore, the overflow pipes are laid underground.

[0017] Furthermore, the top of the dry chamber shaft is equipped with an exhaust vent, the horizontal height of which is greater than that of the emergency flood discharge outlet.

[0018] Furthermore, the structure of the drainage valve inspection well in this water conveyance project also includes:

[0019] The cover plate is used to cover the emergency drainage outlet; when the water level is higher than the emergency drainage outlet, the cover plate is lifted up by the water pressure rising from the wet chamber shaft.

[0020] Furthermore, the emergency drainage outlet penetrates through the top slab of the wet chamber shaft;

[0021] The overflow outlet runs through the side wall at the top of the wet chamber shaft.

[0022] Furthermore, the drain outlet of the overflow pipe is hinged with a second flap that can be flipped outward. The second flap is used to close the drain outlet of the overflow pipe when no water flows into it, and to flip up due to the water pressure inside the pipe when water flows into it.

[0023] Furthermore, the structure of the drainage valve inspection well in this water conveyance project also includes:

[0024] The first float is installed inside the wet chamber shaft to detect the water level inside the shaft.

[0025] This utility model further proposes a safe and reliable supporting structure for a drainage valve inspection well in a water conveyance project, the structure comprising:

[0026] The safe and reliable water conveyance project drainage valve maintenance well structure as described in any of the above items;

[0027] The building structure constructed above the drainage valve inspection well structure of the aforementioned safe and reliable water conveyance project;

[0028] The building's floor includes a dry area floor and a wet area floor; the dry area floor is at a higher level than the wet area floor; maintenance ventilation openings penetrate the dry area floor; emergency drainage outlets penetrate the wet area floor; wall drainage outlets are provided on the bottom side walls of the building; water discharged from the emergency drainage outlets flows through the wet area floor and then exits from the wall drainage outlets of the building, at which point the wet area floor serves as the bottom surface of a drainage trough within the building.

[0029] Furthermore, the safe and reliable water conveyance project drainage valve inspection well structure is also equipped with an independent first staircase shaft and a second staircase shaft; the first staircase shaft contains a first staircase; the second staircase shaft contains a second staircase; both the first staircase and the second staircase lead to the building structure; the height of the staircase entrance at the top of the first staircase shaft and the height of the staircase entrance at the top of the second staircase shaft are both higher than the horizontal height of the wet area floor.

[0030] The first staircase shaft is adjacent to the dry chamber shaft; the second staircase shaft is adjacent to the wet chamber shaft; the bottom side wall of the dry chamber shaft is provided with a first maintenance door that communicates with the first staircase shaft; the bottom side wall of the wet chamber shaft is provided with a second maintenance door that communicates with the second staircase shaft.

[0031] The first maintenance door is used to facilitate maintenance personnel's access to the dry chamber shaft;

[0032] The second maintenance door is used to facilitate maintenance personnel's access to the wet chamber shaft; the second maintenance door is closed by a second maintenance door.

[0033] Furthermore, the wall drain outlet is movably closed by a first flap hinged to the building wall. When water accumulates and presses against the first flap, the water is discharged from the wall drain outlet.

[0034] Furthermore, the structure of the drainage valve inspection well in this water conveyance project also includes:

[0035] The second float is located near the first flap; when the water in the wet chamber shaft reaches the wall drain, the second float is lifted, thereby unlocking the first flap, which can then be lifted by the pressure of the water.

[0036] Furthermore, the building also includes a water hammer device;

[0037] The water hammer device includes a first float, a suspension rope, a fixed pulley installed inside the building structure, and a hammer body with a weight less than the first float; when there is no water accumulation in the wet chamber shaft, the first float is located inside the wet chamber shaft; the suspension rope is hooked onto the fixed pulley, one end of the suspension rope is fixedly connected to the first float, and the other end of the suspension rope is fixedly connected to the hammer body, which is located inside the dry chamber shaft;

[0038] When the first float is lifted by the water in the wet chamber shaft, the hammer pulls the hoisting rope taut by its own weight, and the height of the water in the wet chamber shaft is determined by the distance the hammer moves down.

[0039] Furthermore, the building also includes a vertical overflow pipe extending from the wet chamber shaft to the building structure. The inlet of the vertical overflow pipe is located inside the wet chamber shaft, and the outlet of the vertical overflow pipe leads to the outside of the building structure. A hoisting rope passes through the vertical overflow pipe. When the water in the wet chamber shaft is forced into the section of the vertical overflow pipe located inside the building structure, the first float can be moved up and down into the vertical overflow pipe, thus facilitating maintenance personnel to judge the pressure of the water in the top of the wet chamber shaft by observing the position of the hammer or the overflow situation of the outlet of the vertical overflow pipe.

[0040] The beneficial effects of this utility model are as follows:

[0041] This invention improves the safety and reliability of the drainage valve maintenance well structure and its equipment while ensuring the safety and convenience of maintenance personnel. It avoids the impact on the safety and reliability of the drainage valve maintenance well structure and its supporting buildings caused by abnormal drainage, overflow, or blockage of the overflow outlet of the wet chamber shaft in the water conveyance project. This invention also provides emergency drainage through the emergency flood discharge outlet when the overflow outlet cannot quickly discharge water higher than the overflow outlet, thus preventing water from the wet chamber shaft from flowing into the maintenance ventilation opening.

[0042] This utility model also has the advantages of convenient operation and maintenance management, high fault tolerance rate, safe and easy operation, and low cost.

[0043] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0044] Figure 1 This is a right-side structural cross-sectional view of a safe and reliable water conveyance project drainage valve inspection well structure and its supporting buildings according to the present invention.

[0045] Figure 2 This is a top-view structural cross-sectional view of a safe and reliable water conveyance project drainage valve inspection well structure and its supporting buildings, according to this utility model.

[0046] Figure 3 This is a cross-sectional structural principle diagram of the overflow weir and water pump channel involved in this utility model;

[0047] Figure 4 This is a cross-sectional structural principle diagram of the vertical overflow pipe and the first float involved in this utility model;

[0048] Figure 5 This is a top view schematic diagram of the structural principle of the safety protection plate and the removable fence base involved in this utility model;

[0049] Figure 6 This is a top view schematic diagram of the structural principle of the water gauge and hammer body involved in this utility model;

[0050] Figure 7 This is a schematic diagram of the structural principle of the water gauge and hammer body involved in this utility model from the front view.

[0051] Figure 8 This is a partial structural cross-sectional view of the safety protection mechanism of this utility model, which includes a detachable movable fence and a first safety protection grid plate.

[0052] Explanation of reference numerals in the attached figures:

[0053] Water supply pipeline 100; branch pipe 200; drain valve 300; dry room shaft 1; wet room shaft 2; maintenance ventilation opening 11; first safety protection grating 111; exhaust vent 12; first maintenance door 13; emergency flood discharge outlet 21; overflow outlet 22; overflow pipe 221; second maintenance door 23; water pump 3; first float 4; second float 5; cover plate 6; building structure 7; dry area floor 71; wet area floor 72; flip cover 73; first staircase shaft 8; first staircase 81; overflow weir 24; vertical overflow pipe 74; hoisting rope 91; fixed pulley 92; hammer 93; water gauge 94; second staircase shaft 40; second staircase 401; overflow outlet second grating 500; removable fence base 600; detachable movable fence 700. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be further described clearly and completely below in conjunction with the embodiments of this utility model. It should be noted that the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0055] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", 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.

[0056] The terms “first,” “second,” “third,” and “fourth” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, the use of “first,” “second,” “third,” and “fourth” to designate a feature may explicitly or implicitly include one or more of that feature.

[0057] Example 1

[0058] like Figure 1 As shown:

[0059] This embodiment proposes a safe and reliable drainage valve inspection well structure for a water conveyance project. It is installed on one side of the water conveyance pipeline 100. A drainage valve 300 is installed on the branch pipe 200 of the drainage tee of the water conveyance pipeline 100. The drainage valve inspection well structure includes a dry chamber shaft 1 and a wet chamber shaft 2 arranged side-by-side. Both the dry chamber shaft 1 and the wet chamber shaft 2 are concrete structures. The branch pipe 200 passes through the dry chamber shaft 1 in a sealed manner, and its outlet leads into the wet chamber shaft 2. The drainage valve 300 is located within a section of the branch pipe 200 inside the dry chamber shaft 1. The top of the dry chamber shaft 1 has a maintenance ventilation opening 11, and the top of the wet chamber shaft 2 has an emergency flood discharge outlet 21 and an overflow outlet 22. The order from highest to lowest horizontal height is: maintenance ventilation opening 11, emergency flood discharge outlet 21, and overflow outlet 22. The overflow outlet 22 is connected to the outside via an overflow pipe 221.

[0060] The maintenance ventilation opening 11 is used for personnel passage and ventilation; the maintenance ventilation opening 11 is detachably provided with a safety protection mechanism to prevent personnel from falling into the dry chamber shaft 1 from the maintenance ventilation opening 11 without affecting the ventilation of the maintenance ventilation opening 11.

[0061] Emergency flood discharge outlet 21 is used for emergency flood discharge when overflow outlet 22 cannot discharge water higher than overflow outlet 22 in time;

[0062] Overflow outlet 22 is used to discharge water overflowing from the wet chamber shaft 2 to the outside through an overflow pipe 221.

[0063] The safe and reliable drainage valve maintenance well structure of this embodiment can avoid the following risks: the safety and reliability of the drainage valve maintenance well structure and its supporting buildings may be affected due to abnormal drainage, overflow or blockage of the overflow port 22 of the wet chamber shaft 2 of the drainage valve maintenance well structure of the water conveyance project; it can also carry out emergency flood discharge through the emergency flood discharge port 21 when the overflow port 22 cannot discharge water higher than the overflow port 22 in time; it can also prevent water from flowing into the wet chamber shaft 2 through the maintenance ventilation opening 11; and it can also ensure the safety of maintenance personnel through the safety protection plate.

[0064] Specifically, the dry chamber shaft 1 is used to arrange pumping and drainage facilities and other facilities, so that it is convenient to inspect and maintain them at any time during operation;

[0065] The wet chamber shaft 2 is used to store excess water that needs to be discharged from the water supply pipeline 100;

[0066] Overflow outlet 22 discharges water from wet chamber shaft 2 by gravity flow;

[0067] The drain valve 300 is used to control the discharge of excess water from the water supply pipe 100 to the wet chamber shaft 2.

[0068] Alternatively, the maintenance ventilation opening 11 can be designed as a first opening near the top of a ladder in the dry shaft 1, a second opening near the top of a staircase in the supporting stairwell of the dry shaft 1, or a third opening for temporary passage of maintenance personnel or equipment lowered by a hoist. When the first opening design is adopted, the maintenance ventilation opening 11 is mainly used for ventilation and passage of routine maintenance personnel. When the second opening design is adopted, the ventilation airflow of the dry shaft 1 mainly passes through the second opening of the supporting stairwell of the dry shaft 1. When the third opening design is adopted, the maintenance ventilation opening 11 is used for ventilation, as well as assisting in the passage of hoisted equipment and for emergency use by pulling up maintenance personnel with ropes during rescue operations. It is also necessary to provide a separate stairwell room parallel to the dry shaft 1, so that ventilation can be achieved through both the stairwell room parallel to the dry shaft 1 and the maintenance ventilation opening 11. When the passage between the dry shaft 1 and the stairwell room is closed or the door is shut, ventilation can be achieved through the maintenance ventilation opening 11.

[0069] As a preferred embodiment, the safety protection mechanism is a first safety protection grating 111, which facilitates ventilation and observation of the interior of the dry chamber shaft 1; the good ventilation environment of the dry chamber shaft 1 helps to ensure the safety of maintenance personnel of the dry chamber shaft 1.

[0070] As another preferred embodiment, the safety protection mechanism is a detachable movable fence 700, which encloses the maintenance ventilation opening 11; specifically, as shown... Figure 5 As shown, the maintenance ventilation opening 11 is provided with a removable fence base 600 for installing a removable movable fence 700. Because of the removable movable fence 700, personnel safety can be ensured when lifting equipment. During non-maintenance periods, when the first safety protection grid plate 111 is covered, the removal of the removable movable fence 700 can increase the valve well construction space.

[0071] Regarding the third preferred option for security protection agencies, such as Figure 8 As shown, both a detachable movable fence 700 and a first safety protection grid plate 111 are installed.

[0072] In an optimized manner, the structure of the drainage valve inspection well of this water conveyance project also includes:

[0073] The water pump 3 is installed in the dry chamber shaft 1. The water pump 3 is sealed into the wet chamber shaft 2 through a water inlet pipe. The water pump 3 is connected to the outside through a channel. The water pump 3 is used to pump away the water accumulated in the wet chamber shaft 2 and the water supply pipe 100. Specifically, in practical applications, the water pump 3 is used to remove the excess water that the wet chamber shaft 2 fails to drain out by itself.

[0074] Optimally, the channel is located in the wet chamber shaft 2 and is connected to the overflow outlet 22; the channel is provided with an overflow weir 24, or the channel is an overflow weir 24; the overflow weir 24 is used to prevent external floodwater from flowing back into the wet chamber shaft 2 through the overflow pipe 221, and to block the water gushing out from the outlet of the water pump 3 from flowing back into the wet chamber shaft 2, so that the water in the wet chamber shaft 2 flows into the overflow outlet 22.

[0075] The safe and reliable water conveyance project drainage valve inspection well structure in this embodiment can also accelerate the removal of accumulated water in the wet chamber shaft 2 in emergency situations through the water pump 3, preventing excessive water from flowing into the dry chamber shaft 1, thereby ensuring the safety and reliability of the drainage valve inspection well structure and its supporting buildings.

[0076] Ideally, the overflow pipe 221 is laid below the ground, which helps to accelerate drainage and prevents animals on the ground from entering the overflow pipe 221 or damaging it; water is discharged to low-lying areas through the overflow pipe 221.

[0077] Ideally, the top of the dry chamber shaft 1 is also equipped with an exhaust vent 12, the horizontal height of which is greater than that of the emergency drainage outlet 21; this ensures good ventilation of the dry chamber shaft 1 and also prevents excessive water from the wet chamber shaft 2 from seeping into the dry chamber shaft 1 through the exhaust vent 12.

[0078] In a further optimized manner, exhaust is provided to the dry chamber shaft 1 through a ventilation duct with an exhaust fan passing through the exhaust port 12.

[0079] Example 2

[0080] Example 2 is a further optimized design of any one of the technical solutions in Example 1;

[0081] like Figure 1 As shown:

[0082] The emergency drainage outlet 21 penetrates the top plate of the wet chamber shaft 2;

[0083] Overflow outlet 22 penetrates the side wall at the top of wet chamber shaft 2.

[0084] Example 3

[0085] Example 3 is a further optimized design of any one of the technical solutions in Example 1 or Example 2;

[0086] like Figure 1 As shown:

[0087] The structure of the drainage valve inspection well in this water conveyance project also includes:

[0088] Cover plate 6 is used to cover emergency drainage outlet 21. When the water level of the accumulated water is higher than that of emergency drainage outlet 21, cover plate 6 is lifted by the water pressure rising from the wet chamber shaft 2. This can not only avoid the risk of maintenance personnel falling from emergency drainage outlet 21 and ensure the safety of maintenance personnel, but also automatically open cover plate 6 by water pressure in emergency situations. It has the advantages of being economical, simple in structure and easy to implement.

[0089] Specifically, due to the height difference between the maintenance ventilation opening 11, the emergency flood discharge outlet 21, and the overflow outlet 22, water will not flood the dry chamber shaft 1 and the electromechanical equipment above the dry chamber shaft 1.

[0090] Ideally, the cover plate 6 is surrounded by a waterproof sealing strip to prevent external rainwater from flowing into the wet chamber shaft 2.

[0091] Example 4

[0092] Example 4 is a further optimized design of any one of the technical solutions in Examples 1 to 3;

[0093] like Figure 1 As shown:

[0094] The drain outlet of the overflow pipe 221 is hinged with a second flap that can be flipped outward. The second flap is used to close the drain outlet of the overflow pipe 221 when there is no water flowing into the overflow pipe 221. When water flows into the overflow pipe 221, it is flipped up due to the water pressure inside the pipe. The second flap can also prevent snakes, rats and other organisms in the underground pipe from entering the overflow pipe 221.

[0095] Example 5

[0096] Example 5 is a further optimized design of any one of the technical solutions in Examples 1 to 4;

[0097] like Figure 1 As shown:

[0098] The structure of the drainage valve inspection well in this water conveyance project also includes:

[0099] The first float 4 is installed inside the wet chamber shaft 2 to detect the water level inside the wet chamber shaft 2. In this embodiment, an alarm or monitoring signal can be issued through the detection signal of the first float 4, or the first float 4 can be used as a float in the wet chamber shaft 2 as a water hammer device.

[0100] Example 6

[0101] like Figures 1-4 As shown:

[0102] This embodiment proposes a safe and reliable supporting structure for the maintenance well of the drainage valve in a water conveyance project, including:

[0103] The safe and reliable water conveyance project drainage valve maintenance well structure as described in any one of the technical solutions in Examples 1 to 4;

[0104] The building 7 is constructed above the drainage valve inspection well structure of the safe and reliable water conveyance project;

[0105] The floor of the building 7 includes a dry area floor 71 and a wet area floor 72; the horizontal height of the dry area floor 71 is greater than that of the wet area floor 72; the maintenance ventilation opening 11 penetrates the dry area floor 71; the emergency drainage outlet 21 penetrates the wet area floor 72; the bottom side wall of the building 7 has a wall drainage outlet; the water discharged from the emergency drainage outlet 21 flows through the wet area floor 72 and then exits from the wall drainage outlet of the building 7. At this time, the wet area floor 72 serves as the bottom surface of a drainage trough inside the building 7; this ensures the safety of the equipment on the dry room shaft 1 and prevents water from entering the dry room shaft 1; the building 7 can, to a certain extent, prevent external rainwater or floodwater from entering the dry room shaft 1 and damaging related electrical equipment, and can also prevent unauthorized personnel or animals from entering or falling into the wet room shaft 2.

[0106] Ideally, electrical equipment is installed above the dry area floor 71.

[0107] Optimally, the safe and reliable water conveyance project drainage valve inspection well structure also has an independent first staircase shaft 8 and a second staircase shaft 40; the first staircase shaft 8 has a first staircase 81; the second staircase shaft 40 has a second staircase 401; both the first staircase 81 and the second staircase 401 lead to the building 7; the height of the staircase entrance at the top of the first staircase shaft 8 and the height of the staircase entrance at the top of the second staircase shaft 40 are both higher than the horizontal height of the wet area floor 72;

[0108] The first stairwell 8 is adjacent to the dry room shaft 1; the second stairwell 40 is adjacent to the wet room shaft 2; the bottom side wall of the dry room shaft 1 is provided with a first maintenance door 13 that communicates with the first stairwell 8; the bottom side wall of the wet room shaft 2 is provided with a second maintenance door 23 that communicates with the second stairwell 40.

[0109] The first maintenance doorway 13 is used to facilitate maintenance personnel's access to the dry chamber shaft 1;

[0110] The second maintenance door 23 is used to facilitate maintenance personnel's access to the wet chamber shaft 2; the second maintenance door 23 is closed by a second maintenance door.

[0111] The first maintenance door 13 and the second maintenance door 23 facilitate the entry and exit of management and maintenance personnel, which is beneficial for daily maintenance. The first stairwell 8 and the second stairwell 40 are designed to facilitate the movement of maintenance personnel, avoiding the need to climb ladders through the dry room shaft 1 and wet room shaft 2 for daily maintenance, thus improving the safety and convenience of daily maintenance. The first stairwell 8 and the second stairwell 40 are divided into two independent spaces, which helps to prevent water leakage from the second maintenance door from affecting the safety of personnel in the dry room shaft 1.

[0112] Ideally, the second inspection door 23 or the second inspection door is equipped with a waterproof sealing strip.

[0113] Furthermore, the second inspection door is configured to open into the wet chamber shaft 2.

[0114] Ideally, the wall drain outlet is movably closed by a first flap 73 hinged to the wall of the building 7. When water accumulates and presses against the first flap 73, the first flap 73 flips up, and the water is discharged from the wall drain outlet. This can prevent surrounding animals from entering the building 7 and ensure good emergency drainage performance.

[0115] Specifically, the area above the dry floor 71 can also be used as a resting place for management and maintenance personnel.

[0116] Specifically, a water level monitoring facility is installed in the wet chamber shaft 2. A stainless steel float and bottom valve are installed at the bottom of the wet chamber shaft 2 to monitor water level changes in a timely manner, thus keeping track of the situation of the wet chamber shaft 2.

[0117] In an optimized manner, the structure of the drainage valve inspection well of this water conveyance project also includes:

[0118] The second float 5 is located near the first flip cover 73. When the water in the wet chamber shaft 2 reaches the wall drain, the second float 5 is lifted, thereby unlocking the first flip cover 73. Only after the first flip cover 73 is unlocked can it be lifted by the pressure of the water.

[0119] Ideally, the building also includes a water hammer device;

[0120] The water hammer device includes a first float 4, a suspension rope 91, a fixed pulley 92 installed inside the building 7, and a hammer body 93 with a weight less than the first float 4. When there is no water accumulation in the wet chamber shaft 2, the first float 4 is located inside the wet chamber shaft 2. The suspension rope 91 is hooked onto the fixed pulley 92, one end of the suspension rope 91 is fixedly connected to the first float 4, and the other end of the suspension rope 91 is fixedly connected to the hammer body 93. The hammer body 93 is located inside the dry chamber shaft 1.

[0121] When the first float 4 is lifted by the water in the wet chamber shaft 2, the hammer 93 pulls the suspension rope 91 taut by its own weight, and the height of the water in the wet chamber shaft 2 is determined by the downward distance of the hammer 93.

[0122] Further optimization, such as Figure 6 , Figure 7 As shown, the water hammer device also includes a water gauge 94; the water gauge 94 is set inside the dry chamber shaft 1 and is located beside the lifting position of the hammer body 93, and is used to measure the lifting position of the hammer body 93 inside the dry chamber shaft 1, thereby facilitating indirect judgment of the water depth inside the wet chamber shaft 2.

[0123] Optimized, the building also includes a vertical overflow pipe 74, which extends from the wet chamber shaft 2 to the building structure 7. The inlet of the vertical overflow pipe 74 is located inside the wet chamber shaft 2, and the outlet of the vertical overflow pipe 74 leads to the outside of the building structure 7. The hoisting rope 91 passes through the vertical overflow pipe 74. When the water in the wet chamber shaft 2 is forced into the section of the vertical overflow pipe 74 located inside the building structure 7, the first float 4 can be moved up and down into the vertical overflow pipe 74, so that maintenance personnel can judge the pressure of the water in the top of the wet chamber shaft 2 by observing the position of the hammer 93 or the overflow of the outlet of the vertical overflow pipe 74. If the pressure of the water in the top of the wet chamber shaft 2 is too high or the outlet of the vertical overflow pipe 74 overflows, the maintenance personnel need to adjust the opening of the drain valve accordingly to avoid excessive water pressure in the top of the wet chamber shaft 2 after it is filled with water, thereby ensuring the structural safety of the maintenance well.

[0124] In a further optimized manner, the drain outlet of the vertical overflow pipe 74 is located on the roof of the building 7; the water overflowing from the drain outlet of the vertical overflow pipe 74 is discharged through the rainwater collection pipe of the building 7.

[0125] The process by which maintenance personnel inspect and drain water from the water pipeline 100 of the water conveyance project using a safe and reliable drainage valve inspection well structure and supporting building according to this embodiment is as follows:

[0126] The first step is for maintenance personnel to enter the building 7, pass through the first staircase 81 of the first staircase shaft 8, and then enter the dry chamber shaft 1. By observing the height of the hammer 93, they can determine the water accumulation in the wet chamber shaft 2 and adjust the opening degree of the drain valve 300 accordingly. Excess water in the wet chamber shaft 2 flows away through the overflow port 22, and the remaining water in the wet chamber shaft 2 is pumped away by the water pump. In extreme cases such as the drain valve 300 being opened too wide or the drain valve 300 malfunctioning, the emergency flood discharge port 21 will discharge the water.

[0127] The second step is to drain the accumulated water from the water supply pipeline 100 of the water supply project. Maintenance personnel can then enter the water supply pipeline 100 from other entrances to carry out maintenance. At the same time, they can also inspect the water pump and the drain valve 300. When the water pump 3 or the drain valve 300 needs to be replaced, the water pump 3 or the drain valve 300 can be lowered from the maintenance ventilation opening 11 into the dry chamber shaft 1 using an electric hoist, and then the parts can be replaced.

[0128] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A safe and reliable drainage valve inspection well structure for a water conveyance project, located on one side of a water conveyance pipeline (100) of the water conveyance project, wherein a drainage valve (300) is provided on the branch pipe (200) of the drainage tee of the water conveyance pipeline (100), the drainage valve inspection well structure for the water conveyance project includes a dry chamber shaft (1) and a wet chamber shaft (2) arranged side by side, both the dry chamber shaft (1) and the wet chamber shaft (2) are concrete structures, the branch pipe (200) passes through the dry chamber shaft (1) in a sealed manner and the outlet of the branch pipe (200) leads into the wet chamber shaft (2), the drainage valve (300) is located in a section of the branch pipe (200) located inside the dry chamber shaft (1), and the top of the dry chamber shaft (1) is provided with an inspection ventilation opening (11), characterized in that, The top of the wet chamber shaft (2) is equipped with an emergency drainage outlet (21) and an overflow outlet (22). The outlets are arranged from high to low according to their horizontal height: maintenance ventilation opening (11), emergency drainage outlet (21), and overflow outlet (22). The overflow outlet (22) is connected to the outside through an overflow pipe (221). The maintenance ventilation opening (11) is used for personnel passage and ventilation; the maintenance ventilation opening (11) is detachably equipped with a safety protection mechanism, which is used to prevent personnel from falling into the dry room shaft (1) from the maintenance ventilation opening (11) without affecting the ventilation of the maintenance ventilation opening (11); The emergency flood discharge outlet (21) is used for emergency flood discharge when the overflow outlet (22) cannot discharge water higher than the overflow outlet (22) in time; The overflow port (22) is used to discharge water overflowing from the wet chamber shaft (2) to the outside through an overflow pipe (221).

2. The safe and reliable water conveyance project drainage valve inspection well structure according to claim 1, characterized in that, The safety protection mechanism is a first safety protection grating (111), which is used to facilitate ventilation and observation of the interior of the dry room shaft (1).

3. The safe and reliable water conveyance project drainage valve inspection well structure according to claim 1, characterized in that, The safety protection mechanism is a detachable movable fence (700), which encloses the maintenance ventilation opening (11) around its perimeter.

4. The safe and reliable water conveyance project drainage valve maintenance well structure according to claim 1, characterized in that, The structure of the drainage valve inspection well in this water conveyance project also includes: A water pump (3) is installed in the dry chamber shaft (1). The water pump (3) is sealed into the wet chamber shaft (2) through a water inlet pipe. The water pump (3) is connected to the outside through a channel. The water pump (3) is used to pump away the water accumulated in the wet chamber shaft (2) and the water supply pipe (100).

5. The safe and reliable water conveyance project drainage valve inspection well structure according to claim 4, characterized in that, The channel is located in the wet chamber shaft (2) and is connected to the overflow outlet (22); the channel is provided with an overflow weir (24), or the channel is an overflow weir (24); the overflow weir (24) is used to prevent external floodwater from flowing back into the wet chamber shaft (2) through the overflow pipe (221) and to block the water flow from the outlet of the water pump (3) from flowing back into the wet chamber shaft (2), so that the water in the wet chamber shaft (2) flows into the overflow outlet (22).

6. The safe and reliable water conveyance project drainage valve maintenance well structure according to claim 1, characterized in that, The overflow pipe (221) is laid under the ground.

7. The safe and reliable water conveyance project drainage valve inspection well structure according to claim 1, characterized in that, The top of the dry chamber shaft (1) is also equipped with an exhaust vent (12), and the horizontal height of the exhaust vent (12) is greater than the horizontal height of the emergency flood discharge outlet (21).

8. The safe and reliable water conveyance project drainage valve inspection well structure according to any one of claims 1-7, characterized in that, The structure of the drainage valve inspection well in this water conveyance project also includes: Cover plate (6) is used to cover the emergency drainage outlet (21); when the water level of the accumulated water is higher than that of the emergency drainage outlet (21), the cover plate (6) is lifted by the water pressure rising from the wet chamber shaft (2).

9. The safe and reliable water conveyance project drainage valve maintenance well structure according to any one of claims 1-7, characterized in that, The emergency drainage outlet (21) penetrates the top plate of the wet chamber shaft (2); The overflow outlet (22) penetrates the side wall at the top of the wet chamber shaft (2).

10. The safe and reliable water conveyance project drainage valve maintenance well structure according to any one of claims 1-7, characterized in that, The drain outlet of the overflow pipe (221) is hinged with a second flap that can be flipped outward. The second flap is used to close the drain outlet of the overflow pipe (221) when no water flows into it. When water flows into the overflow pipe (221), it is flipped up due to the water pressure inside the pipe.

11. The safe and reliable water conveyance project drainage valve maintenance well structure according to any one of claims 1-7, characterized in that, The structure of the drainage valve inspection well in this water conveyance project also includes: The first float (4) is installed inside the wet chamber shaft (2) to detect the water level inside the wet chamber shaft (2).

12. A safe and reliable structure and supporting building for a drainage valve inspection well in a water conveyance project, characterized in that, The building includes: The safe and reliable drainage valve inspection well structure for water conveyance projects as described in any one of claims 1-10; The building structure (7) is constructed above the drainage valve inspection well structure of the safe and reliable water conveyance project; The floor of the building (7) includes a dry area floor (71) and a wet area floor (72); the horizontal height of the dry area floor (71) is greater than that of the wet area floor (72); the maintenance ventilation opening (11) penetrates the dry area floor (71); the emergency drainage outlet (21) penetrates the wet area floor (72); the bottom side wall of the building (7) is provided with a wall drainage outlet; the water discharged from the emergency drainage outlet (21) flows through the wet area floor (72) and then is discharged from the wall drainage outlet of the building (7), at which time the wet area floor (72) serves as the bottom surface of a drainage trough inside the building (7).

13. The supporting structure and building for the safe and reliable water conveyance project drainage valve inspection well according to claim 12, characterized in that, The safe and reliable water conveyance project drainage valve inspection well structure is also provided with an independent first staircase shaft (8) and a second staircase shaft (40); the first staircase shaft (8) is provided with a first staircase (81); the second staircase shaft (40) is provided with a second staircase (401); both the first staircase (81) and the second staircase (401) lead to the building (7); the height of the staircase entrance at the top of the first staircase shaft (8) and the height of the staircase entrance at the top of the second staircase shaft (40) are both higher than the horizontal height of the wet area floor (72); The first stairwell (8) is adjacent to the dry room shaft (1); the second stairwell (40) is adjacent to the wet room shaft (2); the bottom side wall of the dry room shaft (1) is provided with a first maintenance door (13) that communicates with the first stairwell (8); the bottom side wall of the wet room shaft (2) is provided with a second maintenance door (23) that communicates with the second stairwell (40); The first maintenance door (13) is used to facilitate maintenance personnel to enter the dry chamber shaft (1); the second maintenance door (23) is used to facilitate maintenance personnel to enter the wet chamber shaft (2); the second maintenance door (23) is closed by a second maintenance door.

14. The supporting structure and building for the safe and reliable water conveyance project drainage valve inspection well according to claim 12, characterized in that, The wall drain outlet is movably closed by a first flap (73) hinged to the wall of the building (7). When water accumulates and presses against the first flap (73), the water is discharged from the wall drain outlet.

15. The supporting structure and building for the safe and reliable water conveyance project drainage valve inspection well according to claim 14, characterized in that, The structure of the drainage valve inspection well in this water conveyance project also includes: The second float (5) is located near the first flap (73). When the water in the wet chamber shaft (2) reaches the wall drain, the second float (5) is lifted up to unlock the first flap (73). Only when the first flap (73) is unlocked can it be lifted up by the water.

16. The supporting structure and building for the safe and reliable water conveyance project drainage valve maintenance well according to any one of claims 12-15, characterized in that, The building also includes a water hammer device; The water hammer device includes a first float (4), a suspension rope (91), a fixed pulley (92) installed inside the building structure (7), and a hammer body (93) with a weight less than that of the first float (4); when there is no water accumulation in the wet chamber shaft (2), the first float (4) is located inside the wet chamber shaft (2); the suspension rope (91) is hooked onto the fixed pulley (92), one end of the suspension rope (91) is fixedly connected to the first float (4), and the other end of the suspension rope (91) is fixedly connected to the hammer body (93); the hammer body (93) is located inside the dry chamber shaft (1); When the first float (4) is lifted by the water in the wet chamber shaft (2), the hammer (93) pulls the rope (91) taut by its own weight, and the height of the water in the wet chamber shaft (2) can be determined by the downward distance of the hammer (93).

17. The supporting structure and building for the safe and reliable water conveyance project drainage valve inspection well according to claim 16, characterized in that, The building also includes a vertical overflow pipe (74); the vertical overflow pipe (74) extends from the wet chamber shaft (2) to the building structure (7), the inlet of the vertical overflow pipe (74) is located inside the wet chamber shaft (2), and the outlet of the vertical overflow pipe (74) leads to the outside of the building structure (7); the hoisting rope (91) passes through the vertical overflow pipe (74); when the water in the wet chamber shaft (2) is pressed into the section of the vertical overflow pipe (74) located inside the building structure (7), the first float (4) can be moved up and down into the vertical overflow pipe (74), so that maintenance personnel can judge the pressure of the water in the top of the wet chamber shaft (2) by observing the position of the hammer (93) or the overflow of the outlet of the vertical overflow pipe (74).

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