A drainage and leak-proof underground valve well structure

Abstract

The present invention discloses a drainage and leakage-proof underground valve well structure, including an underground valve well, a composite cover plate and a drainage and leakage-proof system. The underground valve well is a reinforced concrete structure, including a bottom plate, a side wall, a top plate, a ladder and a machine pier. The composite cover plate is located at the orifice of the top plate of the underground valve well, including a movable cover plate, an impermeable geomembrane, a diamond yarn gasket, and a hand hole. The movable cover plate is a force-bearing structure at the orifice of the top plate, and a hand hole is provided for manual opening; the impermeable geomembrane is located at the lower part of the movable cover plate, which is a structure to prevent rainwater leakage at the orifice; the diamond yarn gasket is located at the lower part of the impermeable geomembrane, which is a support structure for the impermeable geomembrane. The waterproof leakage system includes a water collection trough, a water retaining sill, a downspout, a water collection well, a submersible pump and a drainage pipe, which can automatically collect and timely discharge the leaked water in the underground valve well. The present invention has the function of water collection and leakage prevention, can avoid land use restrictions, is convenient for operation and maintenance, and improves the applicability of the underground valve well.

Description

Technical Field

[0001] The invention relates to an underground valve well structure in water conservancy and municipal engineering, and in particular to a drainage and leakage-proof underground valve well structure in a water diversion and supply project, which is arranged with the top of the underground flush with the ground surface due to land restrictions. Background Art

[0002] In water conservancy and municipal water supply projects, water volume control, drainage inspection and maintenance, and flow monitoring are important contents of project operation management and scheduling. It is often necessary to install control valves, inspection valves, drain valves, flow meters and other equipment at appropriate locations on underground pipes, and set up underground valve wells to protect the above equipment.

[0003] In order to prevent water seepage from entering and causing malfunctions of the electromechanical equipment in the valve well, underground valve wells generally adopt reinforced concrete structures. The bottom plate and side walls are made of anti-seepage concrete. The top of the side wall is set 15 to 20 cm above the ground, and an upper management room and a bridge crane are set up to maintain and repair the equipment. At this time, there is no difficulty in draining and preventing leakage in the underground valve well.

[0004] However, due to policy difficulties or land restrictions, when the location of the underground valve well cannot be expropriated and the upper management room cannot be set up, the valve well is often completely enclosed with a top plate, and a movable cover is set above the equipment to serve as the equipment lifting hole and manhole. At this time, the reserved opening of the underground valve well top plate adopts an integral steel cover, and the well ring adopts a flange structure with a raised inner ring or a rubber water stop to prevent rainwater from entering. However, the integral steel cover is heavy and difficult to lift, and often requires a special crane to operate. For underground valve wells with frequent maintenance requirements, there are problems such as inconvenient operation and management, and high operating costs for renting lifting equipment. If a split movable cover is used to reduce the weight of a single cover, the purpose of facilitating manual opening of the cover for maintenance can be achieved, but it is difficult to avoid the leakage of rain between the cover seams into the underground valve well, which can easily cause water corrosion or even failure of the electromechanical equipment directly below the orifice, and in severe cases, it can also cause operating accidents. In some venues, such as city squares and parking lots, underground valve wells are not allowed to be higher than the ground. When using block covers, in addition to rainfall, surface water will also enter the underground valve well along the cover seams, exacerbating the difficulty of drainage and leakage prevention of the underground valve well. Summary of the invention

[0005] The purpose of the present invention is to overcome the problem of difficulty in drainage and leakage prevention when an underground valve well with a top flush with the ground surface adopts a segmented movable cover structure due to land restrictions, and proposes a drainage and leakage prevention underground valve well structure, in which an impermeable geomembrane, a diamond yarn gasket and a drainage system are arranged under the movable cover, thereby realizing the drainage and leakage prevention function of the underground valve well with a segmented movable cover.

[0006] The technical solution adopted by the present invention is:

[0007] A drainage and leakage-proof underground valve well structure includes an underground valve well, a composite cover plate and a drainage and leakage-proof system. The underground valve well is located on the underground buried pipe line, is a protective container for electromechanical equipment on a steel pipe connected to the underground buried pipe, and adopts a reinforced concrete structure, including a bottom plate, side walls, and a top plate; the bottom plate is located at the bottom of the underground valve well, the side walls are retaining structures around the underground valve well, and the top plate is located at the top of the underground valve well; the composite cover plate is located at the opening of the top plate of the underground valve well, and is opened when the equipment in the underground valve well is under maintenance or when personnel enter and exit; the drainage and leakage-proof system is located in the underground valve well, and is a pipeline system for collecting leaked water and discharging it.

[0008] Furthermore, the underground valve shaft also includes a ladder and a machine pier; the ladder is located on the side wall to facilitate access for maintenance; the machine pier is located on the bottom plate to support the electromechanical equipment in the underground valve shaft.

[0009] Furthermore, a water collection well is partially provided on the bottom plate.

[0010] Furthermore, a water stop ring is provided when the steel pipe passes through the side wall of the underground valve well.

[0011] Furthermore, the top plate is a cast-in-place concrete beam-slab structure, and an opening is left in the top plate just above the electromechanical equipment so as to serve as a lifting passage when the electromechanical equipment is being repaired.

[0012] Furthermore, the composite cover plate includes a movable cover plate, an impermeable geomembrane, a diamond yarn gasket, and a hand hole; the movable cover plate is a force-bearing structure at the orifice of the top plate, and a stone slab can be used; a hand hole is provided on the movable cover plate for manual opening; the impermeable geomembrane is located at the lower part of the movable cover plate, and the diamond yarn gasket is located at the lower part of the impermeable geomembrane. It is made of diamond yarn mesh fixed by plastic steel edge sealing, and has a certain rigidity. It is a support structure for the impermeable geomembrane to prevent the upper part of the impermeable geomembrane from convexly deforming after water is collected. The impermeable geomembrane is laid on the surface of the diamond yarn gasket at the orifice, and the four sides are fixed to the diamond yarn gasket with long tail clips, which is a structure to prevent rainwater leakage at the orifice;

[0013] Furthermore, the drainage and leakage prevention system includes a sump, a water retaining sill, a downspout, a water collection well, a submersible pump and a drainage pipe. The sump is located on the top plate of the underground valve well, arranged on the four sides of the orifice, and is used to collect the leakage water collected by the anti-seepage geomembrane; the water retaining sill is located on the side of the sump close to the orifice, and is a reinforced concrete structure with angle steel edging, and also serves as a supporting structure for the composite cover plate; the downspout is located in the side wall of the underground valve well, and is a galvanized steel pipe, and is used to transfer the water accumulated in the sump to the water collection well; the water collection well is located on the bottom plate of the underground valve well, and is a leakage water container in the underground valve well, and is equipped with a submersible pump and a limit gauge; the submersible pump is located in the water collection well, and is used to pump out the leakage water in the water collection well. It can automatically start to drain the water when the water level in the water collection well reaches a certain depth according to the information fed back by the limit gauge, and automatically stop the pump when the water level drops to a certain depth; the drainage pipe is a drainage pipe behind the submersible pump, and is a PE pipe, and is partially located in the side wall, and is a channel for draining the leakage water in the water collection well.

[0014] Furthermore, the movable cover plate can also be made of a reinforced concrete prefabricated plate with angle steel wrapped on four sides.

[0015] Furthermore, the submersible pump may be provided in one or more units, with one for use and one for backup, thereby improving drainage safety.

[0016] The beneficial effects of the present invention are:

[0017] 1. Avoid land restrictions. This structure sets an anti-seepage geomembrane and diamond yarn gasket under the movable cover plate at the orifice to avoid rainwater leakage and collection and discharge in the valve well, so that the top plate of the valve well can be set flush with the ground surface, reducing the difficulty of land policy processing.

[0018] 2. Easy operation and maintenance. The composite block cover is light in weight and easy to open. The anti-seepage geomembrane and diamond yarn gasket at the bottom are also lightweight and reusable structures, which are easy to open during maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a plan view of an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 A-A sectional view;

[0021] Figure 3 yes Figure 1 B-B sectional view;

[0022] Figure 4 yes Figure 1 C-C section view;

[0023] Figure 5 is a structural detail diagram of a movable cover plate of an embodiment of the present invention;

[0024] Figure 6 It is a detailed structural diagram of the diamond yarn gasket according to an embodiment of the present invention.

[0025] In the figure: 1-underground valve shaft; 11-bottom plate; 12-side wall; 13-top plate; 14-ladder; 15-machine pier; 2-composite cover plate; 21-movable cover plate; 22-anti-seepage geomembrane; 23-diamond yarn gasket; 23a-plastic steel edge sealing; 23b-diamond yarn mesh; 24-hand hole; 3-drainage and leakage prevention system; 31-water collection trough; 32-water retaining sill; 33-downpipe; 34-water collection well; 35-submersible pump; 36-drainage pipe; 4-steel pipe; 5-mechanical and electrical equipment. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] like Figure 1 to Figure 6 As shown, a drainage and leakage-proof underground valve well structure of the present invention comprises an underground valve well 1, a composite cover plate 2 and a drainage and leakage-proof system 3. The underground valve well 1 is a container for the electromechanical equipment 5 on the steel pipe 4, and is a reinforced concrete structure, comprising a bottom plate 11, a side wall 12, a top plate 13, a ladder 14 and a machine pier 15. The bottom plate 11 is located at the bottom of the underground valve well 1, and a water collection well 34 is provided locally; the side wall 12 is a retaining structure around the underground valve well 1, and a water stop ring is provided when the steel pipe 4 passes through the side wall 12 of the underground valve well 1; the top plate 13 is located at the top of the underground valve well 1, and is a cast-in-place concrete beam-slab structure, but an opening is left directly above the electromechanical equipment 5 so as to serve as a lifting channel when the electromechanical equipment 5 is repaired; the ladder 14 is located on the side wall 12, which is convenient for entry for maintenance; the machine pier 15 is located on the bottom plate 11 and is used to support the electromechanical equipment 5 in the underground valve well 1.

[0028] The composite cover plate 2 is located at the opening of the top plate 13 of the underground valve well 1, and includes a movable cover plate 21, an impermeable geomembrane 22, a diamond yarn gasket 23, and a hand hole 24. The movable cover plate 21 is a force-bearing structure at the opening of the top plate 13, and a stone slab can be used; a hand hole 24 is provided on the movable cover plate 21 for manual opening; the impermeable geomembrane 22 is located at the lower part of the movable cover plate 21, and is laid on the surface of the diamond yarn gasket 23 at the opening, and the four sides are fixed to the diamond yarn gasket 23 by long tail clips, which is a structure for preventing rainwater leakage at the opening; the diamond yarn gasket 23 is located at the lower part of the impermeable geomembrane 22, and is made of a diamond yarn mesh 23b fixed by a plastic steel edge sealing 23a, and has a certain rigidity, and is a supporting structure for the impermeable geomembrane 22 to prevent the upper part of the impermeable geomembrane 22 from convexly deforming after water is collected.

[0029] The drainage and leakage prevention system 3 includes a water collection tank 31, a water retaining sill 32, a downpipe 33, a water collection well 34, a submersible pump 35 and a drainage pipe 36. The water collection tank 31 is located on the top plate 13 of the underground valve well 1, arranged on the four sides of the orifice, and is used to collect the leakage water collected by the anti-seepage geomembrane 22; the water retaining sill 32 is located on the side of the water collection tank 31 near the orifice, and is a reinforced concrete structure with angle steel edging, and also serves as a supporting structure for the composite cover plate 2; the downpipe 33 is located in the side wall 12 of the underground valve well 1, and is made of galvanized steel pipes, and is used to transfer the water accumulated in the water collection tank 31 to the water collection well 34; the water collection well 34 is located on the bottom plate 11 of the underground valve well 1 , is a leakage water container in the underground valve shaft 1, which is equipped with a submersible pump 35 and a limit gauge; the submersible pump 35 is located in the water collection well 34, and is used to pump out the leakage water in the water collection well 34. It can automatically start to drain after the water level in the water collection well 34 reaches a certain depth according to the information fed back by the limit gauge, and automatically stop the pump after the water level drops to a certain depth; the drain pipe 36 is the drainage pipe behind the submersible pump 35, which adopts PE pipe and is partially located in the side wall 12. It is a discharge channel for the leakage water in the water collection well 34.

[0030] The movable cover plate 21 can also be made of a reinforced concrete prefabricated plate with angle steel wrapped around four sides.

[0031] The submersible pump 35 may be provided in one unit or in multiple units to improve drainage safety.

[0032] The above embodiments describe the present invention in conjunction with the accompanying drawings, but this should not be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, the technical solutions obtained by equivalent replacement or equivalent transformation methods all belong to the protection scope of the present invention.

Claims

1. A drainage and leakage-proof underground valve well structure, characterized in that: It includes an underground valve well, a composite cover plate and a drainage and leakage prevention system; the underground valve well is located on the underground buried pipe line, is a protective container for electromechanical equipment on a steel pipe connected to the underground buried pipe, and adopts a reinforced concrete structure, including a bottom plate, side walls and a top plate; the bottom plate is located at the bottom of the underground valve well, the side walls are retaining structures around the underground valve well, and the top plate is located at the top of the underground valve well; the composite cover plate is located at the orifice of the top plate of the underground valve well, and is opened when equipment is being repaired or personnel are entering or exiting the underground valve well; the drainage and leakage prevention system is located in the underground valve well, and is a pipeline system for collecting leaked water and discharging it externally; The composite cover plate includes a movable cover plate, an impermeable geomembrane, a diamond yarn gasket, and a hand hole; the movable cover plate is a force-bearing structure at the orifice of the top plate, and a hand hole is provided on the movable cover plate for manual opening; the impermeable geomembrane is located at the lower part of the movable cover plate, and the diamond yarn gasket is located at the lower part of the impermeable geomembrane, and is made of a diamond yarn mesh fixed by plastic steel edge sealing, which is a support structure of the impermeable geomembrane to prevent the upper part of the impermeable geomembrane from convexly deforming after water is collected; the impermeable geomembrane is laid on the surface of the diamond yarn gasket at the orifice, and the four sides are fixed on the diamond yarn gasket by long tail clips, which is a structure for preventing rainwater leakage at the orifice; The drainage and leakage prevention system includes a sump, a water retaining sill, a downpipe, a water collection well, a submersible pump and a drainage pipe; the sump is located on the top plate of the underground valve well, arranged on the four sides of the orifice, and is used to collect the leakage water collected by the anti-seepage geomembrane; the water retaining sill is located on the side of the sump close to the orifice, and is a reinforced concrete structure wrapped with angle steel, and also serves as a supporting structure of the composite cover plate; the downpipe is located in the side wall of the underground valve well, and adopts galvanized steel pipe to transmit the water accumulated in the sump to the water collection well; the water collection well is located on the bottom plate of the underground valve well, and is a leakage water container in the underground valve well, and is equipped with a submersible pump and a limit gauge; the submersible pump is located in the water collection well, and is used to pump out the leakage water in the water collection well. It can automatically start to drain the water after the water level in the water collection well reaches a certain depth according to the information fed back by the limit gauge, and automatically stop the pump after the water level drops to a certain depth; the drainage pipe is a drainage pipe behind the submersible pump, adopts a PE pipe, and is partially located in the side wall, which is a drainage channel for the leakage water in the water collection well.

2. The underground valve well structure for drainage and leakage prevention according to claim 1 is characterized in that: The underground valve well also includes a ladder and a machine pier; the ladder is located on the side wall to facilitate access for maintenance; the machine pier is located on the bottom plate to support the electromechanical equipment in the underground valve well.

3. The underground valve well structure for drainage and leakage prevention according to claim 1 is characterized in that: A water collecting well is partially provided on the bottom plate.

4. The underground valve well structure for drainage and leakage prevention according to claim 1 is characterized in that: The steel pipe connected to the underground buried pipe is provided with a water stop ring when passing through the side wall of the underground valve well.

5. The underground valve well structure for drainage and leakage prevention according to claim 1 is characterized in that: The top plate is a cast-in-place concrete beam-slab structure, and an opening is left in the top plate just above the electromechanical equipment so as to serve as a lifting passage when the electromechanical equipment is repaired.

6. The underground valve well structure for drainage and leakage prevention according to claim 1 is characterized by: The movable cover plate is made of a reinforced concrete prefabricated plate with angle steel wrapped on four sides, or a stone plate.

7. The underground valve well structure for drainage and leakage prevention according to claim 1 is characterized by: The submersible pumps are provided in one or more units.

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