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

Abstract

The safe and reliable water delivery project drain valve overhaul well structure 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 invention further provides a safe and reliable water conveyance project drain valve overhaul well structure matched building. The safe and reliable water conveyance project drain valve overhaul well structure matched building comprises the overhaul well structure and a room body building. The safety and reliability of the drain valve overhaul well structure and the equipment thereof can be improved under the conditions that the safety of maintainers is guaranteed and the operation is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of a water conveyance project pipeline drainage valve inspection well and water conveyance project construction, and in particular to a safe and reliable water conveyance project drainage valve inspection well structure and its supporting building. Background Art

[0002] Over the years, my country's water diversion and regulation projects have developed rapidly. In recent years, there have been more and more long-distance and large-flow regional water diversion and regulation projects, many of which are large-diameter pipeline long-distance water diversion projects. After long-term operation, these pipelines will experience siltation, biological attachment, and inner wall damage. Some old projects cannot meet the original design requirements due to long-term inability to repair or inconvenience in repair. Therefore, large-diameter pipeline long-distance water diversion projects need to set up ancillary buildings such as maintenance, drainage, exhaust, and mud discharge along the water pipeline.

[0003] Although the drainage valve inspection well structure in the prior art can assist in the inspection of water pipelines in water supply projects, it is difficult to ensure the safety and reliability of the inspection well and related equipment in the ancillary buildings above the inspection well when the water head of the water pipeline is too high or the drainage valve is abnormal, and the inspection safety is low. Summary of the invention

[0004] In view of this, it is necessary to propose a safe and reliable water supply engineering drainage valve inspection well structure and its supporting building to overcome the shortcomings of the above-mentioned 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 object, the present invention adopts the following technical solutions:

[0007] The present invention provides a safe and reliable drainage valve inspection well structure for a water delivery project, which is arranged at one side of a water delivery pipeline of the water delivery project. A drainage valve is arranged at a branch pipe of a drainage tee of the water delivery pipeline. The drainage valve inspection well structure for a water delivery project comprises a dry chamber shaft and a wet chamber shaft arranged side by side. Both the dry chamber shaft and the wet chamber shaft are concrete structures. The branch pipe passes through the dry chamber shaft in a sealed manner and a water outlet of the branch pipe leads to the wet chamber shaft. The drainage valve is arranged in a section of the branch pipe located in the dry chamber shaft. A maintenance ventilation opening is arranged at the top of the dry chamber shaft. An emergency flood discharge port and an overflow port are arranged at the top of the wet chamber shaft. The maintenance ventilation opening, the emergency flood discharge port and the overflow port are arranged in descending order according to horizontal height. The overflow port is connected to the outside through an overflow pipe.

[0008] The maintenance ventilation opening is used for personnel passage and ventilation; the maintenance ventilation opening is detachably provided with a safety protection mechanism, which is used to prevent personnel from falling into the dry chamber shaft through the maintenance ventilation opening and does not affect the ventilation of the maintenance ventilation opening;

[0009] The emergency flood discharge opening is used for emergency flood discharge when the overflow opening cannot timely discharge the water higher than the overflow opening;

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

[0011] Further, the safety protection mechanism is a first safety protection grille plate, which is used for facilitating ventilation and observing the interior of the dry chamber shaft.

[0012] Further, the safety protection mechanism is a detachable movable fence, and the detachable movable fence encloses the periphery of the maintenance ventilation opening.

[0013] Further, the structure of the drainage valve inspection well of the water conveyance project further includes:

[0014] A water pump is arranged in the dry chamber shaft. The water pump penetrates into the wet chamber shaft through a water inlet pipe in a sealed manner. The water pump is communicated with the outside through a channel, and the water pump is used to pump away the accumulated water in the wet chamber shaft and the water conveyance pipe.

[0015] Further, the channel is arranged in the wet chamber shaft, and the channel is communicated with the overflow opening; the channel is provided with an overflow weir, or the channel is an overflow weir; the overflow weir is used to prevent the outside flood from flowing back into the wet chamber shaft through the overflow pipe, and block the water flowing out from the water outlet of the water pump from flowing back into the wet chamber shaft, so that the accumulated water in the wet chamber shaft flows into the overflow opening.

[0016] Further, the overflow pipe is laid below the ground.

[0017] Further, a suction port is also arranged at the top of the dry chamber shaft, and the horizontal height of the suction port is greater than the horizontal height of the emergency flood discharge opening.

[0018] Further, the structure of the drainage valve inspection well of the water conveyance project further includes:

[0019] A cover plate is used to cover the emergency flood discharge opening; when the water level of the accumulated water is higher than the emergency flood discharge opening, the cover plate is lifted by the water pressure surging in the wet chamber shaft.

[0020] Further, the emergency flood discharge opening penetrates through the top plate of the top of the wet chamber shaft;

[0021] The overflow opening penetrates through the side wall of the top of the wet chamber shaft.

[0022] Further, a second flap that can be turned outwards is hinged to the drainage outlet of the overflow pipe. The second flap is used to close the drainage outlet of the overflow pipe when there is no accumulated water flowing into the overflow pipe, and is turned up due to the water pressure inside the pipe when accumulated water flows into the overflow pipe.

[0023] Further, the drainage valve inspection well structure of the water conveyance project further includes:

[0024] A first float, which is arranged in the wet well shaft and is used to detect the water level in the wet well shaft.

[0025] The present invention further provides a building supporting the drainage valve inspection well structure of a water conveyance project that is safe and reliable. The building includes:

[0026] The drainage valve inspection well structure of the water conveyance project that is safe and reliable as described in any one of the above;

[0027] A building body constructed above the drainage valve inspection well structure of the water conveyance project that is safe and reliable;

[0028] The floor of the building body includes a dry area floor and a wet area floor; the horizontal height of the dry area floor is greater than the horizontal height of the wet area floor; the inspection ventilation opening penetrates through the dry area floor; the emergency flood discharge opening penetrates through the wet area floor; a wall drainage opening is provided on the bottom side wall of the building body; the water flowing out from the emergency flood discharge opening flows through the wet area floor and then discharges from the wall drainage opening of the building body. At this time, the wet area floor serves as the bottom surface of a drainage trough inside the building body.

[0029] Further, the drainage valve inspection well structure of the water conveyance project that is safe and reliable is also provided with an independent first stair shaft and a second stair shaft; a first stair is arranged in the first stair shaft; a second stair is arranged in the second stair shaft; both the first stair and the second stair lead to the inside of the building body; the stair entrance height at the top of the first stair shaft and the stair entrance height at the top of the second stair shaft are both higher than the horizontal height of the wet area floor;

[0030] The first stair shaft is arranged side by side and adjacent to the dry well shaft; the second stair shaft is arranged side by side and adjacent to the wet well shaft; a first inspection door opening that communicates with the first stair shaft is provided on the bottom side wall of the dry well shaft; a second inspection door opening that communicates with the second stair shaft is provided on the bottom side wall of the wet well shaft;

[0031] The first inspection door opening is used to facilitate maintenance personnel to enter the dry well shaft;

[0032] The second inspection door opening is used to facilitate maintenance personnel to enter the wet well shaft; the second inspection door opening is closed by a second inspection door.

[0033] Further, the wall drainage opening is movably closed by a first flap hinged to the wall of the building body. When there is accumulated water pressing against the first flap, the accumulated water discharges from the wall drainage opening.

[0034] Furthermore, the structure of the inspection well for the drainage valve of the water conveyance project further includes:

[0035] A second float, which is arranged near the first flip cover; when the accumulated water in the wet well shaft reaches the wall drainage opening, the second float is floated up to unlock the first flip cover, and only the unlocked first flip cover can be pushed up by the accumulated water.

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

[0037] The water hammer device includes a first float, a suspension rope, a fixed pulley installed in the building, and a hammer body with a weight less than that of the first float; when there is no accumulated water in the wet well shaft, the first float is located in the wet well shaft; the suspension rope is hung on the fixed pulley, one end of the suspension rope is fixedly connected to the first float, the other end of the suspension rope is fixedly connected to the hammer body, and the hammer body is arranged in the dry well shaft;

[0038] When the first float is floated up by the accumulated water in the wet well shaft, the hammer body tightens the suspension rope by its own gravity, so as to judge the height of the accumulated water in the wet well shaft according to the downward movement distance of the hammer body.

[0039] Furthermore, the building further includes a vertical overflow pipe, which extends from the wet well shaft to the building. The water inlet of the vertical overflow pipe is located in the wet well shaft, and the water outlet of the vertical overflow pipe leads to the outside of the building; the suspension rope passes through the vertical overflow pipe; when the accumulated water in the wet well shaft presses into a section of the vertical overflow pipe located in the building, the first float can enter the vertical overflow pipe in a liftable manner, so that it is convenient for maintenance personnel to judge the pressure of the accumulated water in the top of the wet well shaft by observing the position of the hammer body or the overflow situation of the water outlet of the vertical overflow pipe.

[0040] The beneficial effects of the present invention are as follows:

[0041] The present invention can improve the safety and reliability of the structure of the inspection well for the drainage valve and its equipment under the condition of ensuring the safety of maintenance personnel and convenient operation, and can avoid affecting the safety and reliability of the structure of the inspection well for the drainage valve and its supporting building due to abnormal drainage, overcurrent or blockage of the overflow port of the wet well shaft of the structure of the inspection well for the drainage valve of the water conveyance project; when the overflow port cannot quickly discharge the water higher than the overflow port, the present invention conducts emergency flood drainage through the emergency flood drainage port to avoid the water from the wet well shaft flowing into the inspection and ventilation opening;

[0042] The present invention also has the advantages of convenient operation and maintenance management, high operation fault tolerance rate, safe and easy operation, and low construction cost.

[0043] Other advantages, objectives and features of the present invention will be partially reflected by the following description, and partially will be understood by those skilled in the art through the research and practice of the present invention. Description of the Drawings

[0044] Figure 1 This is a structural sectional view in the right view direction of a maintenance well structure for a drainage valve of a safe and reliable water conveyance project of the present invention and its supporting building;

[0045] Figure 2 This is a structural sectional view in the top view direction of a maintenance well structure for a drainage valve of a safe and reliable water conveyance project of the present invention and its supporting building;

[0046] Figure 3 This is a schematic structural principle diagram in the sectional view direction of an overflow weir and a pump flow channel related to the present invention;

[0047] Figure 4 This is a schematic structural principle diagram in the sectional view direction of a vertical overflow pipe and a first float related to the present invention;

[0048] Figure 5 This is a schematic structural principle diagram in the top view direction of a safety protection plate and a detachable fence base related to the present invention;

[0049] Figure 6 This is a schematic structural principle diagram in the top view direction of a water gauge and a hammer body related to the present invention;

[0050] Figure 7 This is a schematic structural principle diagram in the front view direction of a water gauge and a hammer body related to the present invention;

[0051] Figure 8 This is a partial structural sectional view of a safety protection mechanism related to the present invention including a detachable movable fence and a first safety protection grid plate;

[0052] Explanation of reference numerals:

[0053] Water conveyance pipeline 100; branch pipe 200; drainage valve 300; dry chamber shaft 1; wet chamber shaft 2; maintenance ventilation opening 11; first safety protection grid plate 111; air extraction opening 12; first maintenance door 13; emergency flood discharge opening 21; overflow opening 22; overflow pipeline 221; second maintenance door 23; water pump 3; first float 4; second float 5; cover plate 6; building 7; dry area floor 71; wet area floor 72; flip cover 73; first stair shaft 8; first stair 81; overflow weir 24; vertical overflow pipe 74; lifting rope 91; fixed pulley 92; hammer body 93; water gauge 94; second stair shaft 40; second stair 401; second grid plate of overflow opening 500; detachable fence base 600; detachable movable fence 700. Detailed implementation manners

[0054] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be further described clearly and completely below in conjunction with the embodiments of the present invention. It should be noted that the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0055] It should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention.

[0056] Terms such as "first", "second", "third", "fourth", etc. are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", "third", "fourth" may explicitly or implicitly include one or more of such features.

[0057] Embodiment 1

[0058] As Figure 1 shown:

[0059] This embodiment provides a safe and reliable maintenance well structure for the drainage valve of a water conveyance project, which is arranged on one side of the water conveyance pipeline 100 of the water conveyance project. A drainage valve 300 is provided on the branch pipe 200 of the drainage tee of the water conveyance pipeline 100. The maintenance well structure for the drainage valve of this 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 of concrete structure. The branch pipe 200 penetrates through the dry chamber shaft 1 in a sealed manner and the water outlet of the branch pipe 200 leads into the wet chamber shaft 2. The drainage valve 300 is arranged in a section of the branch pipe 200 located inside the dry chamber shaft 1. An inspection ventilation opening 11 is provided at the top of the dry chamber shaft 1, and an emergency flood discharge opening 21 and an overflow opening 22 are provided at the top of the wet chamber shaft 2. In order from high to low in terms of horizontal height, they are the inspection ventilation opening 11, the emergency flood discharge opening 21, and the overflow opening 22; the overflow opening 22 is communicated with the outside through an overflow pipe 221;

[0060] The inspection ventilation opening 11 is used for personnel passage and ventilation; a safety protection mechanism is detachably provided at the inspection ventilation opening 11 for preventing personnel from falling into the dry chamber shaft 1 from the inspection ventilation opening 11 and not affecting the ventilation of the inspection ventilation opening 11;

[0061] The emergency flood discharge opening 21 is used for emergency flood discharge when the overflow opening 22 cannot timely discharge water higher than the overflow opening 22;

[0062] The overflow port 22 is used to discharge the water overflowing from the wet chamber shaft 2 to the outside through an overflow pipeline 221.

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

[0064] Specifically, the dry chamber shaft 1 is used to arrange the drainage and other facilities, so as to facilitate inspection and maintenance at any time during work;

[0065] The wet chamber shaft 2 is used to store the excess water that the water conveyance pipeline 100 needs to discharge;

[0066] The overflow port 22 discharges the water volume of the wet chamber shaft 2 by means of self-flow;

[0067] The drainage valve 300 is used to control the discharge of the excess water volume of the water conveyance pipeline 100 to the wet chamber shaft 2.

[0068] Optionally, the inspection ventilation opening 11 can be designed as a first opening near the top of a ladder of the dry chamber shaft 1, or can be designed as a second opening near the top of the stairs in the supporting staircase of the dry chamber shaft 1, or can also be designed as a third opening, and the third opening is used for temporarily passing maintenance personnel or equipment hoisted down by a hoist; when the first opening design scheme is adopted, the inspection ventilation opening 11 is mainly used for ventilation and passing daily maintenance personnel; when the second opening design scheme is adopted, the ventilation air flow of the dry chamber shaft 1 mainly passes through the second opening of the supporting staircase of the dry chamber shaft 1; when the third opening design scheme is adopted, the inspection ventilation opening 11 is used for ventilation, and assisting in passing the hoisted equipment and pulling up maintenance personnel by rope during first aid, and a staircase room parallel to the dry chamber shaft 1 needs to be separately provided for the dry chamber shaft 1, so that ventilation can be carried out through the staircase room parallel to the dry chamber shaft 1 and through the inspection ventilation opening 11. When the aisle between the dry chamber shaft 1 and the staircase room is closed or the door is closed, ventilation can be carried out by means of the inspection ventilation opening 11.

[0069] As a preferred scheme, the safety protection mechanism is a first safety protection grille plate 111, and the first safety protection grille plate 111 is used to facilitate ventilation and observe the inside of the dry chamber shaft 1; the good ventilation environment of the dry chamber shaft 1 is conducive to ensuring the safety of the maintenance personnel in the dry chamber shaft 1.

[0070] As another preferred solution, the safety protection mechanism is a detachable movable fence 700, and the detachable movable fence 700 encloses the periphery of the maintenance ventilation opening 11; specifically, as Figure 5 shown, a detachable fence base 600 for installing the detachable movable fence 700 is provided at the edge of the maintenance ventilation opening 11; because of the detachable movable fence 700, the safety of personnel can be guaranteed when lifting equipment. During non-maintenance periods, when the safety protection first grille plate 111 is covered, the removal of the detachable movable fence 700 can increase the building space of the valve well.

[0071] Regarding the third preferred solution of the safety protection mechanism, as Figure 8 shown, both the detachable movable fence 700 and the safety protection first grille plate 111 are provided.

[0072] Optimally, the structure of the drainage valve inspection well for the water conveyance project further includes:

[0073] A water pump 3 arranged in the dry chamber shaft 1, the water pump 3 penetrates into the wet chamber shaft 2 through a water inlet pipe in a sealed manner, the water pump 3 is communicated with the outside through a channel, and the water pump 3 is used to pump out the accumulated water in the wet chamber shaft 2 and the water conveyance pipe 100; specifically, the water pump 3 is used to drain the excess water that cannot flow out by gravity in the wet chamber shaft 2 in actual application.

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

[0075] The safe and reliable structure of the drainage valve inspection well in this embodiment can also accelerate the drainage of the accumulated water in the wet chamber shaft 2 by the water pump 3 in case of emergency, avoiding the excessive water in the wet chamber shaft 2 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] Optimally, the overflow pipe 221 is laid below the ground surface, which is beneficial to accelerating drainage and can also prevent animals on the ground from entering or being damaged by the overflow pipe 221; the water is discharged to a low-lying area through the overflow pipe 221.

[0077] Optimally, a ventilation opening 12 is further provided at the top of the dry chamber shaft 1, and the horizontal height of the ventilation opening 12 is greater than the horizontal height of the emergency flood discharge port 21; in this way, good ventilation of the dry chamber shaft 1 can be guaranteed, and the excessive water in the wet chamber shaft 2 can also be prevented from seeping into the dry chamber shaft 1 through the ventilation opening 12.

[0078] Further optimized, a ventilation duct with an exhaust fan passes through the air extraction port 12 to exhaust the dry chamber shaft 1.

[0079] Embodiment 2

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

[0081] As Figure 1 shown:

[0082] The emergency flood discharge port 21 penetrates through the top plate of the wet chamber shaft 2;

[0083] The overflow port 22 penetrates through the side wall of the top of the wet chamber shaft 2.

[0084] Embodiment 3

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

[0086] As Figure 1 shown:

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

[0088] A cover plate 6 for covering the emergency flood discharge port 21; when the water level of the accumulated water is higher than the emergency flood discharge port 21, the cover plate 6 is lifted by the water pressure surging in the wet chamber shaft 2; in this way, it can not only avoid the risk of maintenance personnel falling from the emergency flood discharge port 21 and ensure the safety of maintenance personnel, but also automatically open the cover plate 6 through the accumulated water pressure in an emergency, with the advantages of economy, simple structure and convenient implementation.

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

[0090] Optimally, a waterproof sealant strip is provided around the cover plate 6 to prevent external rainwater from flowing into the wet chamber shaft 2.

[0091] Embodiment 4

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

[0093] As Figure 1 shown:

[0094] The drain outlet of the overflow pipe 221 is hinged with a second flap that can be turned outwards. The second flap is used to close the drain outlet of the overflow pipe 221 when there is no accumulated water flowing into the overflow pipe 221, and is turned up due to the water pressure inside the pipe when the accumulated water flows into the pipe of the overflow pipe 221; the second flap can also prevent organisms such as snakes and rats in the underground pipe from invading the overflow pipe 221.

[0095] Embodiment 5

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

[0097] As Figure 1 shown:

[0098] The drain valve maintenance well structure of this water conveyance project further includes:

[0099] A first float 4, which is arranged in the wet chamber shaft 2 and is used to detect the water level in the wet chamber shaft 2; in this embodiment, an alarm or monitoring signal can be sent through the detection signal of the first float 4, or the first float 4 is used as a float of the water hammer device in the wet chamber shaft 2.

[0100] Embodiment 6

[0101] As Figures 1-4 shown:

[0102] This embodiment provides a building supporting the drain valve maintenance well structure of a safe and reliable water conveyance project, including:

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

[0104] A building 7 constructed above the safe and reliable drain valve maintenance well structure of the 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 the horizontal height of the wet area floor 72; the maintenance ventilation opening 11 penetrates through the dry area floor 71; the emergency flood discharge opening 21 penetrates through the wet area floor 72; a wall drain opening is provided on the bottom side wall of the building 7; the water flowing out from the emergency flood discharge opening 21 flows through the wet area floor 72 and then discharges from the wall drain opening 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; in this way, the safety of the equipment on the dry chamber shaft 1 can be ensured, and the dry chamber shaft 1 can be prevented from flooding; to a certain extent, the building 7 can prevent external rainwater or flood from entering the dry chamber shaft 1 and damaging the related electrical equipment, and can also prevent idle personnel or animals from entering or falling into the wet chamber shaft 2.

[0106] Optimally, electrical equipment is arranged above the dry area floor 71.

[0107] Preferably, the inspection well structure of the drainage valve for the safe and reliable water conveyance project further comprises an independent first stair shaft 8 and a second stair shaft 40; a first stair 81 is arranged in the first stair shaft 8; a second stair 401 is arranged in the second stair shaft 40; both the first stair 81 and the second stair 401 lead to the building body 7; the stair entrance heights at the tops of the first stair shaft 8 and the second stair shaft 40 are both higher than the horizontal height of the wet area floor 72;

[0108] The first stair shaft 8 is adjacent to the dry chamber shaft 1 side by side; the second stair shaft 40 is adjacent to the wet chamber shaft 2 side by side; a first inspection door 13 communicating with the first stair shaft 8 is arranged on the bottom side wall of the dry chamber shaft 1; a second inspection door 23 communicating with the second stair shaft 40 is arranged on the bottom side wall of the wet chamber shaft 2;

[0109] The first inspection door 13 is used to facilitate maintenance personnel to enter the dry chamber shaft 1;

[0110] The second inspection door 23 is used to facilitate maintenance personnel to enter the wet chamber shaft 2; the second inspection door 23 is closed by a second inspection door;

[0111] The first inspection door 13 and the second inspection door 23 facilitate the entry and exit of management and operation and maintenance personnel, which is beneficial to daily maintenance; the arrangement of the first stair shaft 8 and the second stair shaft 40 is beneficial for maintenance personnel to walk, avoiding the need to climb up and down through the ladders in the dry chamber shaft 1 and the wet chamber shaft 2 during daily maintenance in the prior art, improving the safety and convenience of daily maintenance; the first stair shaft 8 and the second stair shaft 40 are divided into two independent spaces, which is beneficial to avoid the leakage of the second inspection door affecting the safety of personnel in the dry chamber shaft 1.

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

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

[0114] Preferably, the wall drain opening is movably closed by a first flap 73 hinged to the wall of the building body 7. When there is accumulated water pressing against the first flap 73, the first flap 73 flips up, and the accumulated water drains out from the wall drain opening; in this way, it can prevent surrounding animals from entering the building body 7 and ensure good emergency drainage performance.

[0115] Specifically, the upper part of the dry area floor 71 can also be used for management and operation and maintenance personnel to rest.

[0116] Specifically, a water level monitoring facility is arranged in the wet chamber shaft 2, and a stainless steel float ball and a bottom valve are arranged at the bottom of the wet chamber shaft 2 to monitor the water level change situation in a timely manner, so as to master the situation of the wet chamber shaft 2.

[0117] Preferably, the inspection well structure of the water conveyance project drainage valve further includes:

[0118] A second float 5, which is arranged near the first flap 73; when the accumulated water in the wet well 2 reaches the wall drainage outlet, the second float 5 is lifted to unlock the first flap 73, and the unlocked first flap 73 can be pushed up by the accumulated water.

[0119] Preferably, the building further includes a water hammer device;

[0120] The water hammer device includes a first float 4, a suspension rope 91, a fixed pulley 92 installed in the building 7, and a hammer body 93 with a weight less than that of the first float 4; when there is no accumulated water in the wet well 2, the first float 4 is located in the wet well 2; the suspension rope 91 is hung on 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 in the dry well 1;

[0121] When the first float 4 is lifted by the accumulated water in the wet well 2, the hammer body 93 tightens the suspension rope 91 by its own gravity, so as to judge the height of the accumulated water in the wet well 2 according to the downward movement distance of the hammer body 93.

[0122] Further preferably, as Figure 6 、 Figure 7 shown, the water hammer device further includes a water gauge 94; the water gauge 94 is arranged in the dry well 1 and beside the lifting position of the hammer body 93, and is used to measure the lifting position of the hammer body 93 in the dry well 1, so as to conveniently judge the depth of the accumulated water in the wet well 2 indirectly.

[0123] Preferably, the building further includes a vertical overflow pipe 74, the vertical overflow pipe 74 extends from the wet well 2 to the building 7, the water inlet of the vertical overflow pipe 74 is located in the wet well 2, and the drainage outlet of the vertical overflow pipe 74 leads to the outside of the building 7; the suspension rope 91 passes through the vertical overflow pipe 74; when the accumulated water in the wet well 2 is pressed into a section of the vertical overflow pipe 74 located in the building 7, the first float 4 can enter the vertical overflow pipe 74 in a liftable manner, so that maintenance personnel can conveniently judge the pressure of the accumulated water in the top of the wet well 2 by observing the position of the hammer body 93 or the overflow situation of the drainage outlet of the vertical overflow pipe 74; if the pressure of the accumulated water in the top of the wet well 2 is too high or the drainage outlet of the vertical overflow pipe 74 overflows, maintenance personnel need to adjust the opening degree of the drainage valve appropriately to avoid excessive water pressure in the top of the wet well 2 after it is filled with accumulated water, so as to ensure the safety of the inspection well structure.

[0124] Further optimized, 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 drained away through the rainwater collection pipe of the building 7.

[0125] The process for maintenance personnel to repair and drain the water supply pipeline 100 of the water supply project through the supporting building of the safe and reliable drain valve inspection well structure of the present embodiment is as follows:

[0126] First step, the maintenance personnel first enter the building 7, pass through the first staircase 81 of the first staircase shaft 8, then enter the dry chamber shaft 1, and judge the water accumulation situation in the wet chamber shaft 2 by observing the height position of the hammer body 93, so as to adjust the valve opening degree of the drain valve 300. The excessive water accumulation in the wet chamber shaft 2 flows away through the overflow port 22, and the remaining water accumulation in the wet chamber shaft 2 is pumped away by the water pump; when extreme situations such as the valve opening of the drain valve 300 being too large or the drain valve 300 malfunctioning occur, the emergency flood discharge port 21 discharges the flow.

[0127] Second step, after the water accumulation in the water supply pipeline 100 of the water supply project is drained away, the maintenance personnel can enter the water supply pipeline 100 for maintenance from other entrances; at the same time, the water pump and the drain valve 300 can also be maintained; when it is necessary to replace the water pump 3 or the drain valve 300 during maintenance, the water pump 3 or the drain valve 300 can be lifted from the maintenance ventilation opening 11 into the dry chamber shaft 1 by the electric hoist, and then the accessories can be replaced.

[0128] The above-described embodiments only represent several implementation manners of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A maintenance well structure for a drainage valve of a safe and reliable water conveyance project is arranged on one side of a water conveyance pipeline (100) of the water conveyance project. A drainage valve (300) is provided on a branch pipe (200) of a drainage three-way of the water conveyance pipeline (100). The maintenance well structure for the drainage valve of the water conveyance project includes a dry chamber vertical shaft (1) and a wet chamber vertical shaft (2) arranged side by side. Both the dry chamber vertical shaft (1) and the wet chamber vertical shaft (2) are of concrete structure. The branch pipe (200) penetrates through the dry chamber vertical shaft (1) in a sealed manner and the water outlet of the branch pipe (200) leads into the wet chamber vertical shaft (2). The drainage valve (300) is arranged in a section of the branch pipe (200) located in the dry chamber vertical shaft (1). A maintenance ventilation opening (11) is provided at the top of the dry chamber vertical shaft (1), and it is characterized in that, At the top of the wet well shaft (2), there are an emergency flood discharge opening (21) and an overflow opening (22). In the order of decreasing horizontal height, they are the maintenance ventilation opening (11), the emergency flood discharge opening (21), and the overflow opening (22); the overflow opening (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 provided with a safety protection mechanism, which is used to prevent personnel from falling into the dry well shaft (1) from the maintenance ventilation opening (11) and does not affect the ventilation of the maintenance ventilation opening (11); The emergency flood discharge opening (21) is used for emergency flood discharge when the overflow opening (22) cannot timely discharge the water higher than the overflow opening (22); The overflow opening (22) is used to discharge the water overflowing from the wet well shaft (2) to the outside through an overflow pipe (221).

2. The inspection well structure of the drainage valve for a safe and reliable water conveyance project according to claim 1, characterized in that, The safety protection mechanism is a first safety protection grille plate (111), and the first safety protection grille plate (111) is used for convenient ventilation and observing the inside of the dry well shaft (1).

3. The inspection well structure of the drainage valve for a safe and reliable water conveyance project according to claim 1, wherein The safety protection mechanism is a detachable movable fence (700), and the detachable movable fence (700) encloses the periphery of the maintenance ventilation opening (11).

4. The inspection well structure of the drainage valve for the safe and reliable water conveyance project according to claim 1, characterized in that This water conveyance project drain valve inspection well structure further includes: A water pump (3) is arranged in the dry well shaft (1). The water pump (3) penetrates into the wet well shaft (2) through a water inlet pipe in a sealed manner. The water pump (3) is connected to the outside through a channel. The water pump (3) is used to pump out the accumulated water in the wet well shaft (2) and the water conveyance pipe (100).

5. The maintenance well structure of the drainage valve for a safe and reliable water conveyance project according to claim 4, characterized in that, The channel is arranged in the wet well shaft (2), and the channel is communicated with the overflow opening (22); the channel is provided with an overflow weir (24), or the channel is the overflow weir (24); the overflow weir (24) is used to prevent the outside flood from flowing back into the wet well shaft (2) through the overflow pipe (221), and block the water flow gushing out from the water outlet of the water pump (3) from flowing back into the wet well shaft (2), so that the accumulated water in the wet well shaft (2) flows into the overflow opening (22).

6. The structure of the inspection well for the drainage valve of the safe and reliable water conveyance project according to claim 1, wherein, The overflow pipe (221) is laid below the ground surface.

7. The inspection well structure of the drainage valve for a safe and reliable water conveyance project according to claim 1, characterized in that, At the top of the dry well shaft (1), there is also an air extraction opening (12), and the horizontal height of the air extraction opening (12) is greater than the horizontal height of the emergency flood discharge opening (21).

8. The maintenance well structure of the drainage valve for a safe and reliable water conveyance project according to any one of claims 1-7, characterized in that, This water conveyance project drain valve inspection well structure further includes: A cover plate (6) is used to cover the emergency flood discharge opening (21); when the water level of the accumulated water is higher than the emergency flood discharge opening (21), the cover plate (6) is lifted by the water pressure surging in the wet well shaft (2).

9. The inspection well structure of the drainage valve for a safe and reliable water conveyance project according to any one of claims 1-7, characterized in that, The emergency flood discharge opening (21) penetrates through the top plate of the top of the wet well shaft (2); The overflow opening (22) penetrates through the side wall of the top of the wet well shaft (2).

10. The maintenance well structure of the drainage valve for a safe and reliable water conveyance project 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 turned outwards. The second flap is used to close the drain outlet of the overflow pipe (221) when there is no accumulated water flowing into the overflow pipe (221), and is turned up due to the water pressure in the pipe when the accumulated water flows into the pipe of the overflow pipe (221).

11. The safety and reliability water conveyance project drain valve inspection well structure according to any one of claims 1-7, characterized in that This water conveyance project drain valve inspection well structure further includes: A first float (4) is arranged in the wet chamber shaft (2) for detecting the water level in the wet chamber shaft (2).

12. A supporting building structure for the inspection well of the drainage valve of a safe and reliable water conveyance project, characterized in that, The building includes: The safe and reliable water conveyance project drain valve inspection well structure according to any one of claims 1-10; A building body (7) constructed above the safe and reliable water conveyance project drain valve inspection well structure; The floor of the building body (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 the horizontal height of the wet area floor (72); an inspection ventilation opening (11) penetrates through the dry area floor (71); an emergency flood discharge opening (21) penetrates through the wet area floor (72); a wall drainage opening is provided in the bottom side wall of the building body (7); the water flowing out from the emergency flood discharge opening (21) flows through the wet area floor (72) and then discharges from the wall drainage opening of the building body (7). At this time, the wet area floor (72) serves as the bottom surface of a drainage trough in the building body (7).

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

14. The safety and reliability water conveyance project drain valve inspection well structure supporting building according to claim 12, characterized in that, The wall drainage opening is movably closed by a first flip cover (73) hinged to the wall of the building body (7). When there is accumulated water pressing against the first flip cover (73), the accumulated water discharges from the wall drainage opening.

15. The supporting building of the inspection well structure of the drainage valve for a safe and reliable water conveyance project according to claim 14, characterized in that, The water conveyance project drain valve inspection well structure further includes: A second float (5) is arranged near the first flip cover (73); when the accumulated water in the wet chamber shaft (2) reaches the wall drainage opening, the second float (5) is floated up to unlock the first flip cover (73), and the unlocked first flip cover (73) can be flipped up by the accumulated water pressure.

16. The supporting building of the inspection well structure for the drainage valve of the safe and reliable water conveyance project according to any one of claims 12-15, characterized in that, The building further includes a water hammer device; The water hammer device includes a first float (4), a suspension rope (91), a fixed pulley (92) installed in a building (7), and a hammer body (93) with a weight less than that of the first float (4); when there is no accumulated water in the wet well shaft (2), the first float (4) is located in the wet well shaft (2); the suspension rope (91) is hung on 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 in the dry well shaft (1). When the first float (4) is floated by the accumulated water in the wet well shaft (2), the hammer body (93) tightens the suspension rope (91) by its own gravity, so as to judge the height of the accumulated water in the wet well shaft (2) according to the downward movement distance of the hammer body (93).

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

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