A water sealing device and construction method for temporarily sealing the installation hole of a drainage pump in a pump room

Abstract

The present invention relates to the field of dock construction and discloses a water sealing device and construction method for temporarily sealing the installation hole of a drainage pump in a pump room, comprising an annular sealing base plate, an annular waterstop flange being provided on the lower surface of the sealing base plate, and the sealing base plate being cast on the top of the annular base; further comprising a sealing cover water sealing plate which is covered on the sealing base plate, a sealing cover annular flange being provided on each of the upper and lower sides of the sealing cover water sealing plate; a plurality of vertical tensioning bolt through holes are also provided on the two sealing cover annular flanges and the sealing cover water sealing plate; further comprising a tensioning member located in the installation hole, which hooks the stress-bearing surface of the concrete bottom. The present invention can effectively avoid damage to the original concrete structure or the reserved drainage pump anchor bolt hole, and also avoids the process of later repair, reducing the construction period; the installation and removal of the device of the present invention are relatively simple, and the base and the sealing base plate can be chiseled out after only removing the tensioning member, which is convenient for the subsequent installation of permanent equipment, i.e., the drainage pump.

Description

Technical Field

[0001] The present invention relates to the field of dock construction, and in particular to a water sealing device for temporarily sealing a drainage pump installation hole in a pump room and a construction method thereof. Background Art

[0002] Large dry docks in ports are often equipped with drainage structures such as pump rooms. After the pump room is poured with concrete, holes are reserved for installing drainage pumps. When the dry dock needs to be filled with water to complete the installation of the dock door, the main drainage pump needs to be installed to ensure that the pump room will not be flooded when the dock is filled with water.

[0003] However, in the actual construction process, the completion of ancillary buildings such as the pump house is usually delayed. In order to meet the dock filling conditions, the traditional construction procedure is to wait until the drainage pumps are installed before starting the dock filling work, resulting in serious delays in key nodes such as dock filling and dock gate installation. In order to speed up the project progress, it is necessary to temporarily block the holes reserved for the drainage pumps to meet the dock filling conditions. After the dock gates are installed, a temporary water pump is used to drain the dock. Then, the temporary blockage of the drainage pump holes is removed and the drainage pumps are installed.

[0004] In the existing technology, water-sealing structural parts often need to be fixed by installing anchor bolts or using the reserved anchor bolt holes of the drainage pump to install anchor bolts for grouting and pouring. This requires destroying the concrete structure or the reserved holes for the drainage pump anchor bolts. On the one hand, it will affect the strength of the concrete structure and damage the reserved holes for the drainage pump anchor bolts. On the other hand, the process of repairing them in the later stage will also occupy the construction period and increase the construction cost investment.

[0005] Therefore, a water sealing device is needed to solve the above problems by temporarily sealing the installation hole of the drainage pump without damaging the existing concrete structure and the reserved holes for the anchor bolts of the drainage pump. Summary of the Invention

[0006] The technical problem to be solved by the present invention is that in the existing technology, the installation of the water sealing structure usually relies on the installation of anchor bolts or the use of reserved drainage pump anchor bolt holes to install anchor bolts for grouting and fixing, which will affect the strength of the concrete structure, damage the reserved holes for the drainage pump anchor bolts, occupy the construction period, and increase the construction cost.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: a water sealing device for temporarily sealing the installation hole of a drainage pump in a pump room, comprising an annular sealing base plate, an annular water stop flange being provided on the lower surface of the sealing base plate, the sealing base plate being cast on the top of the annular base, and the base being cast on the periphery of the installation hole of the water sealing surface on the top of the concrete;

[0008] It also includes a sealing cover water sealing plate covered on the sealing base plate, a sealing cover annular flange is provided on the upper and lower sides of the sealing cover water sealing plate, and the sealing base plate is tightly fitted with the sealing cover annular flange on the lower side; the two sealing cover annular flanges and the sealing cover water sealing plate are also provided with a plurality of vertical tightening through holes;

[0009] It also includes a tensioning piece located in the mounting hole, the tensioning piece includes an L-piece at the bottom and a threaded pull rod arranged at the top of the vertical section of the L-piece. After the top of the threaded pull rod passes through the vertical tensioning bolt through hole, a rubber water-stop gasket, a washer and a nut are provided on the upper side of the sealing cover annular flange; the horizontal part of the bottom of the L-piece hooks the stress surface of the bottom concrete.

[0010] In particular, an expansion water stop strip is arranged between the base and the concrete top water sealing surface.

[0011] In particular, the sealing base plate is provided with a vertical grouting hole, and an annular groove is opened on the upper surface of the sealing base plate on the side of the vertical grouting hole close to the installation hole, and a circular rubber sealing strip is pressed into the annular groove.

[0012] In particular, a cross-shaped reinforcement plate is fixed on the upper surface of the water sealing plate of the sealing cover, and a lifting lug is provided on the cross-shaped reinforcement plate.

[0013] In particular, a transverse plate for increasing the stress-bearing surface is provided on the top of the horizontal portion of the bottom of the L-piece.

[0014] The present invention also provides a construction method for a water sealing device for temporarily sealing a mounting hole of a drainage pump in a pump room, comprising the following steps:

[0015] Step S1: Set up a casting template on the top water sealing surface of the concrete, arrange the expansion water stop strip, fix the sealed base plate, and then cast the base to ensure that the inner wall of the base is flush with the inside of the mounting hole below;

[0016] Step S2: After the base is strong enough, press the circular rubber sealing strip into the annular groove of the sealing base plate, then place the sealing cover water sealing plate on the sealing base plate and keep it aligned with the edge, and insert the tensioning piece from bottom to top. Pass the threaded pull rod through the vertical tensioning bolt through-hole to expose a certain length of the screw rod, and insert the rubber water stop gasket, washer and nut in sequence. Turn the tensioning piece to align the end of the horizontal part of the L piece with the center of the mounting hole, and lightly tighten the nut to ensure that the horizontal part of the bottom of the L piece is hooked tightly to the concrete bottom stress surface outside the bottom of the mounting hole;

[0017] Step S3: Tighten the nuts slightly and symmetrically in sequence along the circumferential direction to ensure that the contact surfaces of the sealing cover water sealing plate and the sealing base plate are evenly fitted and sealed while the L-piece remains in place;

[0018] Step S4, finally tighten the nuts symmetrically and check the torque, check the sealing surface gap, and check the stress of the L-piece hook on the concrete stress surface.

[0019] Compared with the prior art, the present invention has the following advantages and beneficial effects: The present invention uses a precast base as a load-bearing member, and provides water-sealing components on the base to temporarily seal the water pump installation hole. This effectively avoids damage to the original concrete structure or the reserved drainage pump anchor bolt holes, avoids the need for later repairs, and effectively reduces the construction period. Furthermore, the installation and removal of the device of the present invention are relatively simple. Only the tensioning member needs to be removed before the base and sealed base plate can be chiseled out, facilitating the subsequent installation of permanent equipment, namely the drainage pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the state structure of the present invention.

[0021] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle.

[0022] Figure 3 It is a schematic diagram of the connection status of the sealing cover water sealing plate and L-piece.

[0023] The meanings of the numbers in the figure are: sealing base plate - 1; annular waterstop flange - 11; annular groove - 12; circular rubber sealing strip - 13; base - 2; expansion waterstop strip - 21; concrete top water sealing surface - 3; mounting hole - 4; sealing cover water sealing plate - 5; sealing cover annular flange - 51; vertical tightening bolt through hole - 52; cross-shaped reinforcement plate - 53; lifting ear - 54; tightening piece - 6; L piece - 61; threaded pull rod - 62; rubber waterstop gasket - 63; washer - 64; nut - 65; concrete bottom load-bearing surface - 7. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention, so as to have a further understanding of the concept of the present invention, the technical problems solved, the technical features constituting the technical solutions and the technical effects brought about.

[0025] like Figures 1 to 3 As shown, a water sealing device for temporarily sealing the installation hole of a drainage pump in a pump room comprises an annular sealing base plate 1, an annular water stop flange 11 being provided on the lower surface of the sealing base plate 1, the sealing base plate 1 being cast on the top of an annular base 2, and the base 2 being cast on the periphery of the installation hole 4 of the water sealing surface 3 at the top of the concrete; an annular groove 12 for sealing water is provided on the upper plane of the sealing base plate 1, so that the sealing base plate and the sealing cover water sealing plate 5 have a good water sealing effect;

[0026] It also includes a sealing cover water sealing plate 5 provided on the sealing base plate 1. A sealing cover annular flange 51 is provided on the upper and lower sides of the sealing cover water sealing plate 5. The sealing cover water sealing plate 5 and the upper and lower sealing cover annular flanges 51 are welded together along the inner and outer edges to form a whole. The sealing base plate 1 is tightly fitted with the sealing cover annular flange 51 on the lower side. A plurality of vertical tension bolt through holes 52 are also provided on the two sealing cover annular flanges 51 and the sealing cover water sealing plate 5.

[0027] It also includes a tensioning member 6 located in the mounting hole 4, the tensioning member 6 includes an L-piece 61 at the bottom and a threaded pull rod 62 arranged at the top of the vertical section of the L-piece 61. The top of the threaded pull rod 62 passes through the vertical tensioning bolt through hole 52 and a rubber water-stop gasket 63, a washer 64 and a nut 65 are provided on the upper sealing cover annular flange 51; the horizontal part of the bottom of the L-piece 61 hooks the concrete bottom stress surface 7.

[0028] In the present invention, the L-piece 61 is used in a hooking manner to make the sealing cover water-sealing plate 5 fit tightly on the sealing base plate 1 on the top of the base 2, and the circular rubber sealing strip 13 is pressed into the groove 12 to achieve the water-sealing effect; the water pressure is all transmitted to the stress surface 7 at the bottom of the concrete through the threaded pull rod 62 of the L-piece 61, thereby ensuring the water-sealing effect. Specifically, the role of the sealing base plate 1 is to fit tightly with the sealing cover water-sealing plate 5 and play the main role of bearing pressure / load. The sealing cover water-sealing plate 5 and the upper and lower sealing cover annular flanges 51 are welded together along the edges inside and outside as a whole. The role of the annular water-stop flange 11 on the lower surface of the sealing base plate 1 is to ensure the sealing effect of the base 2; the base 2 uses non-shrinkage cement grouting material to avoid deformation of the base 2 due to shrinkage, which affects the sealing and load-bearing properties. The base 2 is also annular, and the size of its inner circle matches the size of the mounting hole 4, so that the tensioning member 6 can extend into the bottom of the mounting hole 4 without hindrance; the L-piece 61 is a steel part, and a threaded pull rod is provided at the top of the vertical section. One end of the threaded pull rod 62 is connected to the top of the vertical section of the L-piece 61, and the other end passes through the vertical tensioning bolt through hole 52 and extends out. It is tightened by sleeved nut 65 on the sealing cover water sealing plate 5. The function of the rubber water-stop gasket 63 is to prevent water seepage, and the function of the washer 64 is to buffer the force of the nut 65 to prevent damage to the sealing cover water sealing plate 5; the sealing cover annular flanges 51 on the upper and lower sides of the sealing cover water sealing plate 5 mainly play the role of increasing the strength of the sealing cover water sealing plate 5 when tightened.

[0029] As a preferred embodiment, an expansion water stop strip 21 is arranged between the base 2 and the concrete top water sealing surface 3.

[0030] In this embodiment, in order to ensure that water does not seep out from the gap between the bottom of the base 2 and the concrete top water sealing surface 3 in the water-filled state, an expansion water stop strip 21 is arranged on the connecting surface between the two to ensure a sealing and water-stopping effect.

[0031] As a preferred embodiment, the sealing base plate 1 is provided with a vertical grouting hole. An annular groove 12 is formed on the upper surface of the sealing base plate 1 on the side of the vertical grouting hole close to the mounting hole 4. A circular rubber sealing strip 13 is pressed into the annular groove 12. During the installation of the circular rubber sealing strip 13, it is necessary to ensure that the diameter of the circular rubber sealing strip 13 is greater than the depth of the annular groove 12 to ensure that the circular rubber sealing strip 13 is sufficiently compressed.

[0032] In this embodiment, the vertical grouting holes on the sealing base plate 1 are used for grouting of the base 2, so that the base will not be loosely cast. At the same time, a circular rubber sealing strip 13 is pressed into the annular groove 12 set on the upper surface of the sealing base plate 1 to meet the water sealing requirements.

[0033] As a preferred embodiment, a cross-shaped reinforcement plate 53 is fixed to the upper surface of the sealing cover water sealing plate 5 , and a lifting lug 54 is provided on the cross-shaped reinforcement plate 53 .

[0034] In this embodiment, the cross-shaped reinforcement plate 53 can be made of H-shaped steel and welded to the sealing cover water sealing plate 5 to ensure that the sealing cover water sealing plate 5 will not deform when subjected to water pressure, thereby further enhancing the sealing effect.

[0035] As a preferred embodiment, a horizontal plate is provided on the top of the bottom horizontal portion of the L-piece 61 to increase the concrete bearing surface.

[0036] In this embodiment, the main function of the transverse plate is to reduce the pressure per unit area of the concrete bottom stress surface 7, so as to prevent the concrete bottom stress surface 7 from being damaged and affecting its strength due to excessive tension per unit area.

[0037] A construction method for a water sealing device for temporarily sealing the installation hole of a drainage pump in a pump room, comprising the following steps:

[0038] Step S1: Set up a casting template on the top water sealing surface 3 of the concrete, fix the sealed base plate 1, and then cast the base 2 to ensure that the inner wall of the base 2 is flush with the inside of the mounting hole 4 below;

[0039] Step S2: After the base 2 has sufficient strength, press the circular rubber sealing strip 13 into the annular groove 12 of the sealing base plate 1, then place the sealing cover water sealing plate 5 on the sealing base plate 1 and keep it aligned with the edge, and push the tensioning piece 6 from bottom to top to pass the threaded pull rod 62 through the vertical tensioning bolt through hole 52 until a certain length of the screw is exposed. Then, insert the rubber water stop gasket 63, washer 64 and nut 65 in sequence, rotate the tensioning piece 6 to align the L piece 61 horizontally with the center of the mounting hole 4, and lightly tighten the nut 65 to ensure that the horizontal part of the bottom of the L piece 61 is hooked tightly to the concrete bottom force surface 7 on the outer periphery of the bottom of the mounting hole 4;

[0040] Step S3, tighten the nuts 65 slightly and symmetrically in sequence along the circumferential direction to ensure that the contact surface between the sealing cover water sealing plate 5 and the sealing base plate 1 is evenly fitted and sealed while the L-piece 61 remains in place;

[0041] Step S4, finally tighten the nuts 65 symmetrically and check the torque, check the sealing surface gap, and check the force applied to the L-piece 61 hooked on the hand 7 at the bottom of the concrete.

[0042] Compared with the installation method in the prior art, the construction method adopted in the present invention can effectively avoid the need to install pre-buried bolts or pour grouting and fixing the reserved holes for the anchor bolts of the drainage pump, which can effectively reduce the damage to the original concrete structure, avoid the need for later repairs to the original concrete structure, and shorten the construction period. At the same time, the pouring of the base 2 and the sealing base plate 1 can be carried out directly after the original concrete structure has strengthened, making rational use of the construction period. The later dismantling of the base 2 and related structures is also relatively simple. After loosening the nut 65, slightly turning the L piece 61 can complete the removal of the sealing cover water sealing plate 5, and finally the base 2 can be chiseled off.

[0043] The terms "connection" and "fixation" appearing in the description of the present invention may refer to fixed connection, processing and forming, welding, or mechanical connection. The specific meanings of the above terms in the present invention shall be understood according to the specific circumstances.

[0044] In the description of the present invention, the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc., which indicate the orientation or position relationship, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water sealing device for temporarily sealing the installation hole of a drainage pump in a pump room, characterized in that: The invention comprises an annular sealing base plate (1), the lower surface of the sealing base plate (1) is provided with an annular water-stop flange (11), the sealing base plate (1) is cast on the top of the annular base (2), and the base (2) is cast on the periphery of the mounting hole (4) of the top water-sealing surface (3) of the concrete; It also includes a sealing cover water sealing plate (5) which is covered on the sealing base plate (1), wherein a sealing cover annular flange (51) is provided on each of the upper and lower sides of the sealing cover water sealing plate (5), and the sealing base plate (1) is tightly fitted with the sealing cover annular flange (51) on the lower side; a plurality of vertical tension bolt through holes (52) are also provided on the two sealing cover annular flanges (51) and the sealing cover water sealing plate (5); The utility model further comprises a tensioning member (6) located in the mounting hole (4), the tensioning member (6) comprising an L-member (61) at the bottom and a threaded pull rod (62) arranged at the top of the vertical section of the L-member (61), the top of the threaded pull rod (62) passing through the vertical tensioning bolt through hole (52) and then being provided with a rubber water-stop gasket (63), a washer (64) and a nut (65) on the upper side of the sealing cover annular flange (51); the horizontal portion at the bottom of the L-member (61) is hooked tightly to the concrete bottom stress surface (7).

2. A water sealing device for temporarily blocking the installation hole of a drainage pump in a pump room according to claim 1, characterized in that: An expansion water stop strip (21) is arranged between the base (2) and the concrete top water sealing surface (3).

3. A water sealing device for temporarily blocking the installation hole of a drainage pump in a pump room according to claim 1, characterized in that: The sealing base plate (1) is provided with a vertical grouting hole. An annular groove (12) is formed on the upper surface of the sealing base plate (1) on the side of the vertical grouting hole close to the mounting hole (4). A circular rubber sealing strip (13) is pressed into the annular groove (12).

4. A water sealing device for temporarily sealing the installation hole of a drainage pump in a pump room according to claim 1, characterized in that: A cross-shaped reinforcement plate (53) is also fixed on the upper surface of the sealing cover water sealing plate (5), and a lifting lug (54) is provided on the cross-shaped reinforcement plate (53).

5. A water sealing device for temporarily sealing the installation hole of a drainage pump in a pump room according to claim 1, characterized in that: A transverse plate for increasing the force-bearing surface is provided on the top of the horizontal portion at the bottom of the L-piece (61).

6. A construction method for a water sealing device for temporarily blocking a pump room drainage pump installation hole according to any one of claims 1 to 5, characterized in that: The steps include: Step S1, setting up a casting template on the top water sealing surface (3) of the concrete, arranging the expansion water stop strip (21), and fixing the sealing base plate (1), and then casting the base (2), ensuring that the inner wall of the base (2) is flush with the inside of the mounting hole (4) below; Step S2, after the base (2) is strong enough, press the circular rubber sealing strip (13) into the annular groove (12) of the sealing base plate (1), then place the sealing cover water sealing plate (5) on the sealing base plate (1) and keep it aligned with the edge, and insert the threaded rod (62) from the bottom to the top of the tensioning member (6) through the vertical tensioning bolt through hole (52) to expose a certain length of the screw, and then insert the rubber water stop gasket (63), washer (64) and nut (65) in sequence, rotate the tensioning member (6) to align the end of the horizontal part of the L member (61) with the center of the mounting hole (4), and lightly tighten the nut (65) to ensure that the horizontal part of the bottom of the L member (61) is hooked tightly to the concrete bottom force surface (7) outside the bottom of the mounting hole (4); Step S3, tighten the nuts (65) slightly and symmetrically in sequence along the circumferential direction to ensure that the contact surfaces of the sealing cover water sealing plate (5) and the sealing base plate (1) are evenly fitted and sealed while the L-piece (61) remains in place; Step S4, finally tighten the nuts (65) symmetrically and check the torque, check the sealing surface gap, and check the stress of the L piece (61) hooked on the concrete bottom stress surface (7).

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