초록 ▼

The portable steel-reinforced HDPE pump station includes a vertically upright, cylindrical wet well fabricated from high-density polyethylene reinforced by helically wound steel ribs. HDPE profile wall material and endoskeleton are used for wet well reinforcement. Exterior foam insulation or thin HD

The portable steel-reinforced HDPE pump station includes a vertically upright, cylindrical wet well fabricated from high-density polyethylene reinforced by helically wound steel ribs. HDPE profile wall material and endoskeleton are used for wet well reinforcement. Exterior foam insulation or thin HDPE shell wrap are disposed on outer portion of the wet well. The base of the pump station includes cross ribs atop a planar anti-flotation collar. Interior spaces between the cross ribs are filled with concrete to anchor the wet well in situ. Alternatively, a steel plate is used as a base. The steel plate base may be encapsulated by an HDPE sheet. HDPE sheets form a sloping hopper bottom at lower inside portion of the wet well. The annular space between the hopper bottom and base plate is filled solid with a closed-cell polyurethane insulation. Alternatively the wet wall is constructed of structurally reinforced thermoplastic without steel reinforcement ribs.

대표청구항 ▼

1. A portable structurally reinforced thermoplastic pump station, comprising: a vertically upright cylindrical wet well of structurally reinforced thermoplastic having an outer shell fabricated from thermoplastic material, the wet well having a top portion, and a bottom portion, wherein the wet well

1. A portable structurally reinforced thermoplastic pump station, comprising: a vertically upright cylindrical wet well of structurally reinforced thermoplastic having an outer shell fabricated from thermoplastic material, the wet well having a top portion, and a bottom portion, wherein the wet well further comprises thermoplastic-encapsulated steel reinforcement ribs spirally wound around the wet well;a thermoplastic sheet wrapping wrapped around the wet well and covering the reinforcement ribs and spaces between the ribs, the thermoplastic sheet wrapping forming a substantially smooth profile around the wet well, wherein the thermoplastic sheet wrapping forms seams fuse-welded together and to the thermoplastic-encapsulated steel ribs to retain the thermoplastic sheet wrapping around the wet well;at least one pump disposed in the wet well;an outlet pipe attached to the at least one pump, the outlet pipe extending external to the wet well, the outlet pipe allowing effluent water to exit the wet well;an inlet pipe extending into the wet well for receiving water, the inlet pipe providing for entry of water inside the wet well; anda base plate encapsulated by a layer of thermoplastic material, the bottom portion of the wet well being attached to and extending therefrom. 2. The portable structurally reinforced thermoplastic pump station according to claim 1, wherein the base plate comprises steel. 3. The portable structurally reinforced thermoplastic pump station according to claim 1, further comprising: thermoplastic sheets extending at a downward slope from an inner circumferential wall of the wet well to the base plate to define a hopper inside the bottom portion of the wet well; andfoam insulation filling an annular space between the sloping thermoplastic sheets and the base plate, the foam insulation retaining a shape of the hopper. 4. The portable structurally reinforced thermoplastic pump station according to claim 1, wherein the base plate comprises concrete. 5. The portable structurally reinforced thermoplastic pump station according to claim 4, wherein the base plate further comprises: a lattice formed by elongate thermoplastic stiffener cross rib members at the bottom of the wet well, the concrete being poured inside the lattice; andsteel rods extending through and anchored to the thermoplastic stiffener cross rib members, the steel rods reinforcing the concrete inside the lattice. 6. The portable structurally reinforced thermoplastic pump station according to claim 1, wherein the wet well further comprises thermoplastic-encapsulated steel reinforcement ribs spirally wound around the wet well, the pump station further comprising foam insulation disposed around the wet well and filling spaces between the steel reinforcement ribs, the foam insulation forming a substantially smooth profile outside the wet well. 7. The portable structurally reinforced thermoplastic pump station according to claim 1, further comprising; an access hatch disposed at an upper portion of the wet well;sliding rails disposed in the wet well, the sliding rails extending proximate to the access hatch, the at least one pump being slidably attached to the sliding rails, thereby facilitating installation and access to the at least one pump for removal through the access hatch. 8. The portable structurally reinforced thermoplastic pump station according to claim 7, further comprising means for attaching at least one of the pump guiding sliding rails to the base plate. 9. The portable structurally reinforced thermoplastic pump station according to claim 1, further comprising a water level monitor disposed in the wet well, the water level monitor activating the at least one pump when water level in the wet well exceeds a first predetermined level and deactivating the at least one pump when water level in the wet well falls below a second predetermined level. 10. The portable structurally reinforced thermoplastic pump station according to claim 1, further comprising: a top annular steel ring rolled to match an interior circumference of the wet well, the top portion of the wet well defining a top interior circumference, the top annular steel ring being attached to the top interior circumference of the wet well;a steel rectangular access hatch frame circumscribed by the top annular steel ring;a plurality of elongate steel columns attached to the top annular steel ring and extending downward into the bottom portion of the wet well, the steel columns constraining vertical contraction and expansion of the wet well; andthreaded couplings extending from the base plate, the steel columns having bottom ends attached to the couplings. 11. The portable structurally reinforced thermoplastic pump station according to claim 10, further comprising thermoplastic sheet material fully encapsulating the top annular steel ring, steel rectangular access hatch frame, and the elongate steel columns. 12. The portable thermoplastic pump station according to claim 10, wherein the base plate comprises concrete, the pump station further comprising: a plurality of elongate thermoplastic stiffener cross rib members forming a lattice defining a frame at the bottom of the wet well, the concrete being poured inside the lattice;a plurality of steel rods extending through and anchored to the thermoplastic stiffener cross rib members, the steel rods reinforcing the concrete inside the lattice; anda plurality of steel crossbeam members forming a perpendicular cross supporting the frame formed by the thermoplastic stiffener cross rib members, the threaded couplings being attached to the steel crossbeam members so that the crossbeam members support said steel columns. 13. A portable structurally reinforced thermoplastic pump station, comprising: a vertically upright cylindrical wet well of structurally reinforced thermoplastic having an outer shell fabricated from thermoplastic material, the wet well having a top portion, and a bottom portion;at least one pump disposed in the wet well;an outlet pipe attached to the at least one pump, the outlet pipe extending external to the wet well, the outlet pipe allowing effluent water to exit the wet well;an inlet pipe extending into the wet well for receiving water, the inlet pipe providing for entry of water inside the wet well;a base plate encapsulated by a layer of thermoplastic material, the bottom portion of the wet well being attached to and extending therefrom;a top annular steel ring rolled to match an interior circumference of the wet well, the top portion of the wet well defining a top interior circumference, the top annular steel ring being attached to the top interior circumference of the wet well;a steel rectangular access hatch frame circumscribed by the top annular steel ring;a plurality of elongate steel columns attached to the top annular steel ring and extending downward into the bottom portion of the wet well, the steel columns constraining vertical contraction and expansion of the wet well; andthreaded couplings extending from the base plate, the steel columns having bottom ends attached to the couplings.