Vertical installation structure of full-cross-flow submersible pump, pump station and transformation method

Abstract

The invention relates to the technical field of flood control drainage and irrigation pump stations, in particular to a vertical installation structure of a full-cross-flow submersible pump, a pump station and a transformation method.The vertical installation structure of the full-cross-flow submersible pump comprises the submersible pump and a shaft, the shaft comprises a base and a shaft body which are connected, and the shaft is used for being connected with the wall of a pump pit; the shape and size of an inner hole of the base are matched with the shape and size of a water inlet of a pump pit, a mounting gap is formed between the inner side of the barrel body and the side wall of the submersible pump, and the submersible pump is only connected to the upper portion of the barrel body in a sealed mode. The vertical installation structure can reduce transformation of an existing civil engineering structure, can improve the vertical installation precision of the submersible pump, reduces the installation difficulty, is small in field installation workload and high in installation efficiency, effectively exerts the vertical installation effect of the full tubular pump, and is suitable for transformation, expansion and popularization of a large number of old pump stations.

Description

Technical Field

[0001] The present invention relates to the technical field of flood control, drainage and irrigation pumping stations, and particularly relates to a vertical installation structure, a pumping station and a transformation method of a full-flow submersible pump. Background Art

[0002] Flood control, drainage and irrigation pumping stations are facilities for water conservancy works such as discharging waterlogging, flood control and irrigation. At present, there are a large number of flood control, drainage and irrigation pumping stations using vertical axial flow pumps in China, which were generally invested and constructed in the 1970s of the last century. There are problems such as old water pump units and insufficient pumping capacity. Moreover, the water pumps generally need to work for a long time. However, due to the lack of good heat dissipation measures for the current water pumps, working under overheated conditions for a long time is likely to lead to a decrease in service life or even damage. Therefore, the problem of renovation of old flood control, drainage and irrigation pumping stations is particularly important.

[0003] The motor of the full-flow pump adopts a wet design and is not afraid of being flooded. If it is installed vertically, the switchboard of the water pump can be installed above the highest flood level of the outer river, effectively solving the problem that the pumping station cannot continue to work due to being flooded by floods. However, how to replace the existing pumping stations suitable for horizontally installed axial flow pump equipment with vertically installed full-flow pump equipment on the spot without damaging the infrastructure structure is the key problem in the reconstruction and expansion project of the pumping station. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiency in the prior art that there is a lack of a structure that can not only continue to use the existing infrastructure of the horizontal pumping station but also ensure the vertical installation of the full-flow pump, and provide a vertical installation structure, a pumping station and a transformation method of a full-flow submersible pump.

[0005] In a first aspect, the present invention provides a vertical installation structure of a full-flow submersible pump, including a submersible pump and a wellbore. The wellbore includes a base and a barrel body connected to each other. The wellbore is used to connect with the pump pit wall. The shape and size of the inner hole of the base are adapted to the shape and size of the water inlet of the pump pit. The inner size of the barrel body is larger than the outer size of the submersible pump. The submersible pump is only hermetically connected to the upper part of the barrel body. The vertical installation structure of a full-flow submersible pump described in the present invention uses a prefabricated wellbore to isolate the existing civil engineering structure, and does not need to rely on the shape of the existing pump pit, nor does it need to modify the shape and size of the pump pit, so that the shape and size of the new pump can be flexibly determined according to actual needs; the cross-sectional shape of the barrel can be selected according to actual needs, and its inner size is larger than the outer size of the submersible pump, so as to have an installation gap, which is convenient for absorbing the processing and installation errors of the wellbore and better meeting the installation and leveling of the pump body. Moreover, since the pump body and the base are not sealed, water can enter the gap to buffer the shaking of the pump body; the shape and size of the inner hole of the base are adapted to the shape and size of the water inlet of the pump pit, which will not affect the selection of the size of the water pump suction port, thereby ensuring the maximum drainage area, so as to facilitate the needs of transformation and expansion. It can also well isolate the damage or destruction of the civil structure on the bottom of the pump pit caused by the dismantling of the original pump body, reduce civil repair and modification, reduce the difficulty of leveling to avoid vertical installation, and help improve installation accuracy and operational stability. The submersible pump is only sealed and connected to the wellbore for fixed installation, that is, the lower end is not fixedly connected to the wellbore, that is, only one end of the pump body is connected to the wellbore, and the lower end of the installed pump body can sit on the base or have a gap with the base, which is convenient for pump body installation. It can better ensure the leveling accuracy, and is easier to transform into a vertical installation and the vertical size selection of the pump, making the vertical size design more flexible. Since the pump body is a submersible pump, water entering the gap between the pump body and the wellbore will not affect the work of the water pump, and the upper end of the pump body is sealed and connected to the wellbore, so it will not cause flooding. The vertical installation structure of a full-flow submersible pump according to the present invention can reduce the modification of existing civil engineering structures, improve the vertical installation accuracy of the submersible pump, reduce the installation difficulty, reduce the on-site installation workload, and increase the installation efficiency. It can effectively exert the effect of the vertical installation of the full-flow pump and is suitable for the renovation, expansion and promotion of a large number of old pump stations.

[0006] The inner dimension of the barrel is the clearance dimension of the cross section, excluding the height dimension.

[0007] Preferably, a connecting plate is provided on the outside of the barrel, and the connecting plate is used to connect embedded parts. The embedded parts are arranged in the first newly built concrete on the top surface of the pump pit side wall, and the second newly built concrete is filled between the wellbore and the inner wall of the pump pit.

[0008] The new concrete is divided into two locations for connection. The first new concrete located on the top surface of the pump pit side wall is convenient for leveling control of the upper edge when installing the wellbore. The second new concrete is used for stable connection of the wellbore, which is beneficial to ensure the accuracy of the wellbore installation. The horizontality can be controlled within ±2mm, and it can also reduce the modification of the existing civil engineering structure.

[0009] Further preferably, there are two connecting plates which are arranged opposite to each other, and there is a pad between the connecting plates and the first newly-built concrete.

[0010] With the above setting method, the setting of the backing plate further improves the installation accuracy of the wellbore.

[0011] Further preferably, the barrel body is further provided with a first flange, the submersible pump has a second flange, the first flange and the second flange are connected by bolts, and a sealing member is further provided between the first flange and the second flange.

[0012] Further preferably, the base includes a trough-shaped structure, and the notch of the trough-shaped structure faces the inner wall of the pump pit.

[0013] Further preferably, the lower trough wall of the trough-shaped structure is shorter than the upper trough wall of the trough-shaped structure.

[0014] With the above setting method, it is beneficial to increase the internal clear dimension of the wellbore, increase the filling amount and compactness of the concrete at the base, and improve the connection performance between the newly built second concrete and the wellbore.

[0015] Preferably, an exhaust valve is provided on the diffuser body of the submersible pump.

[0016] Further preferably, a first elbow and a second elbow are provided between the water outlet of the submersible pump and the existing water outlet pipe, and a telescopic joint is provided between the first elbow and the second elbow.

[0017] The size of the water outlet of the submersible pump can be flexibly designed between the first elbow and the second elbow, so that the existing water outlet pipe can be directly utilized, and the degree of transformation of the existing pumping station can be further reduced.

[0018] In a second aspect, the present invention further provides a pumping station, including a vertical installation structure of a full tubular flow submersible pump as described in any one of the above.

[0019] By using the pumping station of the present invention, a full tubular flow submersible pump can be vertically installed, with little modification to the existing civil structure, low installation difficulty, small on-site workload, high installation efficiency, effectively exerting the effect of vertical installation of the full tubular flow pump, and being suitable for the transformation, expansion and popularization of a large number of old pumping stations.

[0020] In a third aspect, the present invention further provides a method for transforming a pumping station, which is applied to a vertical installation structure of a full tubular flow submersible pump as described above or a pumping station as described above, and includes the following steps: S1. Place the wellbore into the pump pit, adjust the level of the upper edge of the wellbore and then temporarily fix it; S2. Install the embedded parts and connecting plates; S3. Connect the connecting plate with the wellbore and pour the newly built second concrete; S4. Lift the submersible pump and seal it with the top of the wellbore.

[0021] Adopt the transformation method of a pumping station described in the present invention. After positioning and installing based on the upper edge of the wellbore, then use the connecting plate and the second newly built concrete to stably install the wellbore, reducing the difficulty of adjusting the installation accuracy, effectively reducing the influence of the demolition interface of the existing civil engineering on the installation accuracy, so as to ensure that the full tubular flow submersible pump can be vertically installed in the existing pumping station and realize the transformation and expansion of the pumping station.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention provides a vertical installation structure of a full tubular flow submersible pump, which can reduce the transformation of the existing civil engineering structure, improve the vertical installation accuracy of the submersible pump, reduce the installation difficulty, have a small on-site installation workload, high installation efficiency, effectively play the effect of the vertical installation of the full tubular flow pump, and is suitable for the transformation, expansion and popularization of a large number of old and old pumping stations.

[0023] 2. The present invention provides a pumping station, which can vertically install a full tubular flow submersible pump, has little transformation of the existing civil engineering structure, low installation difficulty, small on-site operation volume, high installation efficiency, effectively plays the effect of the vertical installation of the full tubular flow pump, and is suitable for the transformation, expansion and popularization of a large number of old and old pumping stations.

[0024] 3. The present invention provides a transformation method of a pumping station. After positioning and installing based on the upper edge of the wellbore, then use the connecting plate and the second newly built concrete to stably install the wellbore, reducing the difficulty of adjusting the installation accuracy, effectively reducing the influence of the demolition interface of the existing civil engineering on the installation accuracy, so as to ensure that the full tubular flow submersible pump can be vertically installed in the existing pumping station and realize the transformation and expansion of the pumping station. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a layout schematic diagram of a vertical installation structure of a full tubular flow submersible pump; Figure 2 For Figure 1 The partial enlarged view in; Figure 3 It is an elevation view of the installation of the wellbore; Figure 4 It is a top view of the installation of the wellbore.

[0026] Markings in the figure: 0 - Submersible pump, 01 - Second flange, 02 - Exhaust valve, 1 - Base, 2 - Barrel body, 21 - First flange, 22 - Sealing member, 23 - Connecting plate, 24 - Embedded part, 25 - Base plate, 31 - First newly built concrete, 32 - Second newly built concrete, 4 - Existing outlet pipe, 51 - First elbow, 52 - Second elbow, 53 - Expansion joint. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The present invention will be further described in detail below in conjunction with specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments. Any technology implemented based on the content of the present invention belongs to the scope of the present invention.

[0028] In the description of the specific embodiments of the present invention, without special explanation, the expression terms indicating the orientation or positional relationship such as "upper", "lower", "left", "right", "center", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the invention product / device / device is usually used. These terms of orientation or positional relationship are only for the convenience of describing the solution of the present invention or simplifying the description in the specific embodiments, so as to facilitate technicians to quickly understand the solution, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, it should not be construed as a limitation to the present invention.

[0029] In addition, if terms such as "horizontal", "vertical", "hanging", "parallel" appear, it does not mean that the corresponding device / component / element is required to be absolutely horizontal or vertical or hanging or parallel, but can be slightly inclined or have a deviation. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. Or, it can be simply understood that the corresponding device / component / element is arranged in the directions of "horizontal", "vertical", "hanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still play its role in the solution of the present invention.

[0030] In addition, the expressions such as "first", "second", "third", etc. in the terms are only used to distinguish the description of the same or similar components, and should not be construed as emphasizing or implying the relative importance of specific components.

[0031] In addition, in the description of the embodiments of the present invention, "several", "multiple", "a number of" represent at least 2. It can be any situation such as 2, 3, 4, 5, 6, 7, 8, 9, etc., or even more than 9.

[0032] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, the terms "set", "installed", "connected", "linked", "provided with", "laid", "arranged" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be connection means commonly used in the art such as welding, riveting, bolting, and threaded connection. Such a connection can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components.

[0033] Embodiment 1 As Figures 1 - 4 shown, a vertical installation structure of a fully tubular submersible pump includes a submersible pump 0 and a wellbore. The wellbore includes a base 1 and a barrel body 2 connected to each other. The wellbore is connected to the pump pit by pouring. The shape and size of the inner hole of the base 1 are adapted to the shape and size of the water inlet of the pump pit. The inner size of the barrel body 2 is larger than the outer shape size of the submersible pump 0. The submersible pump 0 is only hermetically connected to the upper part of the barrel body 2. An exhaust valve 02 is provided on the guide vane body of the submersible pump 0. A first elbow 51 and a second elbow 52 are provided between the water outlet of the submersible pump 0 and the existing water outlet pipe 4. A expansion joint 53 is provided between the first elbow 51 and the second elbow 52.

[0034] As Figure 1 shown, the water suction port of the submersible pump 0 faces downward, towards the inner hole of the base 1, the water outlet of the submersible pump faces upward, and the rotating shaft of the rotor is arranged vertically, that is, the vertically installed submersible pump 0.

[0035] Exemplarily, two oppositely arranged connecting plates 23 are provided on the outer side of the barrel body 2. The shape and size of the connecting plates 23 can be set as required. The connecting plates 23 are welded to the barrel body 2. Embedded parts 24 are provided on the top surface of the side wall of the pump pit through the first newly built concrete 31. The embedded parts 24 can be anchor bolts. As Figure 4 shown, each connecting plate 23 has 3 holes for connecting the embedded parts 24. The space between the wellbore and the inner wall of the pump pit is filled with the second newly built concrete 32. There is also a sealant on the top of the second newly built concrete 32. There is also a backing plate 25 between the connecting plate 23 and the first newly built concrete 31. The connection between the first newly built concrete 31 and the existing side wall of the pump pit can be provided with embedded steel bars. As Figure 3 shown, the form of the first newly built concrete 31 can be as Figures 1 - 2 shown, or can be as Figure 3 shown. The barrel body 2 and the base 1 can be integrally formed or welded. The height of the base 1 can be 20 - 30 cm.

[0036] The barrel body 2 is provided with a first flange 21, which can be integrally formed or welded, depending on the actual situation. The submersible pump 0 has a second flange 01. In this embodiment, for example, the second flange 01 is arranged on the outer side of the upper edge of the water suction chamber. The first flange 21 and the second flange 01 are connected by bolts, and there is also a seal 22 between the first flange 21 and the second flange 01. For example, in this embodiment, an installation groove for installing the seal 22 is arranged on the top surface of the first flange 21, and the seal 22 can adopt an existing sealing ring. A plurality of rib plates are also arranged between the connecting plate 23 and the first flange 21 of the barrel body 2 to strengthen the strength.

[0037] The base 1 includes a trough-shaped structure, such as Figure 3 shown, the cross-section of the base 1 is trough-shaped, the trough opening of the trough-shaped structure faces the inner wall of the pump pit, the lower trough wall and the upper trough wall can be parallel flat structures, the lower trough wall of the trough-shaped structure is shorter than the upper trough wall of the trough-shaped structure, and the length of the lower trough wall can be 1 / 2 - 2 / 3 of the length of the upper trough wall, which is convenient for hoisting the wellbore into the pit and is also convenient for filling with the second newly built concrete 32.

[0038] In an alternative embodiment, the second flange 01 can be arranged at the corresponding position of the submersible pump 0 as required. For example, for integral installation, it can be arranged at the corresponding height position of the outer shell. For example, for split hoisting, it can be arranged on the part that is first hoisted into the pit.

[0039] In an alternative embodiment, the wellbore can also be positioned and connected with other structural members on the pump pit wall, including existing structural members or newly built structural members, and can be connected to at least a part of the inner wall part, the whole inner wall, the top surface of the side wall, and the bottom wall of the pump pit wall, which is determined according to the force requirements.

[0040] In an alternative embodiment, the base 1 can adopt other structural forms. For example, the shape of the trough-shaped structure can be replaced with an L-shaped, C-shaped, F-shaped, toothed shape (the toothed part faces the pump pit wall), etc.

[0041] The present invention provides a vertical installation structure of a full tubular flow submersible pump, which can reduce the transformation of the existing civil engineering structure, improve the vertical installation accuracy of the submersible pump, reduce the installation difficulty, have a small on-site installation workload, high installation efficiency, effectively play the effect of the vertical installation of the full tubular flow pump, and is suitable for the transformation, expansion and popularization of a large number of old and old pump stations.

[0042] Embodiment 2 A pump station, such as Figure 1 shown, includes a vertical installation structure of a full tubular flow submersible pump as described in Embodiment 1. The existing water outlet pipe 4 includes two sections, and a telescopic joint is also arranged between the two sections. An exhaust valve is arranged on the section close to the second elbow 52, a flap valve is arranged at the outlet of the existing water outlet pipe 4, and a butterfly valve is arranged between the telescopic joint and the pipe section close to the flap valve.

[0043] The installation opening of the installation layer of the submersible pump 0 is provided with a cover plate. As Figure 1 shown, that is, the original axial flow pump would protrude from the installation opening. After the transformation, the pump body of the full tubular pump will not protrude from the installation opening. Therefore, the installation opening can be closed with a cover plate, and the distribution board can be placed on the second floor of the ground to avoid being flooded by water.

[0044] The present invention provides a pumping station that can vertically install a full tubular submersible pump, with little modification to the existing civil structure, low installation difficulty, small on-site workload, high installation efficiency, effectively exerting the effect of vertical installation of the full tubular pump, and being applicable to the transformation, expansion and popularization of a large number of old pumping stations.

[0045] Embodiment 3 A transformation method for a pumping station, applied to a vertical installation structure of a full tubular submersible pump as described in Embodiment 1 or a pumping station as described in Embodiment 2, includes the following steps: S1. Place the wellbore into the pump pit, adjust the level of the upper edge of the wellbore and then temporarily fix it; S2. Install the embedded parts 24 and the connecting plate 23; S3. Connect the connecting plate 23 to the wellbore and pour the second newly built concrete 32; S4. Hoist the submersible pump 0 and seal-connect it to the top of the wellbore.

[0046] First, roughen the surface of the existing concrete that will first contact the first newly built concrete 31 and the second newly built concrete 32. The roughening depth is determined according to actual needs. The contact surfaces of the wellbore with the first newly built concrete 31 and the second newly built concrete 32 and the roughened surface of the existing concrete are all coated with a concrete interface agent, and the thickness is determined according to actual needs and processes, etc. Hoist the wellbore into the pump pit, adjust the level of the upper edge of the wellbore. For example, adjust it based on the level of the first flange 21. After adjustment in place, temporarily fix it, and then embed the embedded parts 24 in the first newly built concrete 31. Attention should be paid to the height of the embedded parts 24 above the surface of the first newly built concrete 31. Then install the backing plate 25 and the connecting plate 23. After tightening the embedded parts 24, connect the connecting plate 23 to the wellbore by welding, and then weld the first flange 21 on the barrel body 2, and pour the second newly built concrete 32 to fix the wellbore. A layer of polysulfide sealant can be applied to the upper surface of the second newly built concrete 32 for sealing.

[0047] Finally, hoist the submersible pump 0 into the wellbore for installation.

[0048] Adopting the transformation method for a pumping station described in the present invention, after positioning and installing based on the upper edge of the wellbore, the wellbore is stably installed through the connecting plate 23 and the second newly built concrete 32, reducing the difficulty of adjusting the installation accuracy, effectively reducing the influence of the demolition interface of the existing civil engineering on the installation accuracy, so as to ensure that a full tubular submersible pump can be vertically installed in the existing pumping station and realize the transformation and expansion of the pumping station.

[0049] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A vertical installation structure of a fully tubular submersible pump, characterized in that, It includes a submersible pump (0) and a wellbore. The wellbore includes a base (1) and a barrel body (2) which are connected to each other. The wellbore is used to connect with the pump pit wall. The shape and size of the inner hole of the base (1) are adapted to the shape and size of the water inlet of the pump pit. The inner size of the barrel body (2) is larger than the outer size of the submersible pump (0). The submersible pump (0) is only sealed and connected to the upper part of the barrel body (2).

2. The vertical installation structure of a fully tubular submersible pump according to claim 1, characterized in that, A connecting plate (23) is provided on the outer side of the barrel body (2). The connecting plate (23) is used to connect a pre-embedded part (24). The pre-embedded part (24) is arranged in the first newly built concrete (31) on the top surface of the side wall of the pump pit. The second newly built concrete (32) is filled between the wellbore and the inner wall of the pump pit.

3. The vertical installation structure of a fully tubular submersible pump according to claim 2, characterized in that, There are two connecting plates (23) which are arranged oppositely. A backing plate (25) is also provided between the connecting plate (23) and the first newly built concrete (31).

4. The vertical installation structure of a fully tubular submersible pump according to claim 2, characterized in that, The barrel body (2) is also provided with a first flange (21). The submersible pump (0) has a second flange (01). The first flange (21) and the second flange (01) are connected by bolts. A seal (22) is also provided between the first flange (21) and the second flange (01).

5. The vertical installation structure of a fully tubular submersible pump according to claim 2, characterized in that, The base (1) includes a trough-shaped structure. The trough opening of the trough-shaped structure faces the inner wall of the pump pit.

6. The vertical installation structure of a fully tubular submersible pump according to claim 5, characterized in that, The lower trough wall of the trough-shaped structure is shorter than the upper trough wall of the trough-shaped structure.

7. The vertical installation structure of a fully tubular submersible pump according to any one of claims 2-6, characterized in that, An exhaust valve (02) is provided on the guide vane body of the submersible pump (0).

8. The vertical installation structure of a fully tubular submersible pump according to claim 7, characterized in that, A first elbow (51) and a second elbow (52) are provided between the water outlet of the submersible pump (0) and the existing water outlet pipe (4). A expansion joint (53) is provided between the first elbow (51) and the second elbow (52).

9. A pumping station, characterized in that, It includes a vertical installation structure of a full tubular flow submersible pump as described in any one of claims 1-8.

10. A method for the transformation of a pumping station, characterized in that, Applied to a vertical installation structure of a full tubular flow submersible pump as described in any one of claims 2-8, it includes the following steps: S1. Place the wellbore into the pump pit, adjust the level of the upper edge of the wellbore and then temporarily fix it; S2. Install the pre-embedded part (24) and the connecting plate (23); S3. Connect the connecting plate (23) with the wellbore and pour the second newly built concrete (32); S4. Hoist the submersible pump (0) and seal and connect it to the top of the wellbore.

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