Graded relay water pumping and draining device

Abstract

The invention discloses a graded relay water pumping and draining device, which relates to the technical field of tunnel construction, and comprises a water collecting tank at the bottom of an inclined shaft, and the water collecting tank is arranged at a tunnel face needing to be drained and comprises multiple stages of water pumping components connected in series and a plurality of pipelines, the group of water pumping assemblies at the bottom and the water collecting tank, the two adjacent stages of water pumping assemblies and the last group of water pumping assemblies and the outside of the inclined shaft are communicated through pipelines to form a graded relay water pumping and drainage system, and the graded relay water pumping and drainage system is started to complete reverse drainage operation in the tunnel along the inclined shaft; when the multi-stage series-connection water pumping assembly is selected, the flow at the bottom is the largest, and the flow at the tail is the smallest. The device is simple in structure and convenient to operate, space and workload are saved while graded water pumping and drainage are guaranteed, extra construction of a water sump is not needed while the water pumping and drainage requirements are met, the space can be saved while the cost is saved, and site construction is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel construction, and in particular to a hierarchical relay drainage device. Background Art

[0002] During the design process of transportation lines, in order to ensure the construction progress, excavation is generally carried out at both ends, and one end will face the problem of reverse slope drainage. For the tunnels constructed in mountain ranges, even with a herringbone slope design, during the construction of the tunnels, in order to speed up the construction progress and shorten the construction period, sometimes the method of adding construction inclined shafts is often used to increase the construction face. When the construction inclined shaft is a forward slope, natural drainage can be used to achieve the drainage purpose for the drainage in the constructed tunnel. However, in actual projects, due to topographical conditions, in the case of minimizing project costs, the excavation distance of the inclined shaft should be shortened as much as possible, and inevitably, inclined shafts in the form of reverse slopes will appear, and reverse slope drainage also needs to be faced. In tunnel construction, submersible pumps are usually used for pumping and drainage work. Submersible pumps have the advantages of compact structure and convenient installation. When submersible pumps are used, they need to be immersed in water. Therefore, a sump for placing the pump usually needs to be set at the inclined shaft slope for storing water.

[0003] Existing hierarchical drainage all requires setting corresponding sumps for storing water, and after storing water, a water pump is connected for pumping and drainage. The following problems exist for the construction auxiliary inclined shaft: (1) The construction passage of the inclined shaft is small, and constructing a separate sump requires occupying space, which is not conducive to on-site construction; (2) When the water volume increases later, under the condition of the existing drainage system, supplementing the water storage tank requires excavation and blasting operations. For rock geology, the construction difficulty is great.

[0004] Therefore, how to provide a hierarchical relay drainage device that is easy to adjust, eliminate the setting of intermediate water storage devices, reduce blasting and excavation operations, and reduce the construction operation difficulty has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0005] The purpose of the present invention is to provide a hierarchical relay drainage device to solve the problem that hierarchical drainage can be carried out without setting a water storage tank under the condition that the existing drainage system is not adjusted and the construction space is limited for small-section large-slope inclined shafts.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A hierarchical relay drainage device of the present invention includes a sump at the bottom of an inclined shaft. The sump is arranged at the tunnel face that needs to be drained, and includes multiple stages of series-connected pumping components and multiple pipes. A group of the pumping components at the bottom and the sump, between adjacent two stages of pumping components, and between the last group of the pumping components and the outside of the inclined shaft are all connected through the pipes to form a hierarchical relay drainage system. The hierarchical relay drainage system starts to complete the reverse drainage operation along the inclined shaft inside the tunnel. When selecting multiple stages of series-connected pumping components, the flow rate at the bottom is the largest and the flow rate at the tail is the smallest.

[0008] Preferably, the pumping component includes a group of primary pumping components and at least one group of secondary pumping components. The primary pumping components are arranged on one side of the sump and are connected through an input pipe; the secondary pumping components are arranged in the middle of the inclined shaft. The secondary pumping components and the primary pumping components, and between any two adjacent secondary pumping components are all connected through a transfer pipe. The output end of the secondary pumping component at the end is connected to a sedimentation tank outside the inclined shaft through an output pipe.

[0009] Preferably, the pumping component includes a water pump for drainage and a control cabinet for control. The water pump and the control cabinet are electrically connected and arranged in one-to-one correspondence.

[0010] Preferably, the primary pumping component includes a first water pump and a first control cabinet that are electrically connected. The water inlet of the first water pump is connected to the sump through the input pipe;

[0011] The secondary pumping component includes a second water pump and a second control cabinet that are electrically connected. The water inlet of the second water pump is connected to the water outlet of the first water pump through the transfer pipe, and the water outlet of the second water pump is connected to the sedimentation tank through the output pipe.

[0012] Preferably, elbows for direction change are installed at the water outlets of the first water pump and the second water pump. The elbows are connected to the water inlet ends of the transfer pipe and the output pipe.

[0013] Preferably, one first water pump and at least one second water pump are installed in the inclined shaft through an adjustable base;

[0014] The adjustable base includes a fixed base and a movable base. The movable base is movably connected to the fixed base. The bottom plates of the first water pump and the second water pump are fixedly connected to the movable base. The movable base moves along the guide rail on the top of the fixed base, thereby adjusting the distance between adjacent two water pumps.

[0015] Preferably, a plurality of adjustment grooves are formed on the bottom surface of the fixed base. An adjustment threaded hole is coaxially arranged above the adjustment groove. A fixed leg for height adjustment is arranged below the adjustment groove. A connecting internal thread is formed on the top surface of the fixed leg. The adjustment bolt passes through the adjustment threaded hole from top to bottom and is connected to the connecting internal thread. Rotating the adjustment bolt drives the fixed leg to move downward and is initially inserted and connected into the adjustment groove.

[0016] Preferably, the fixed leg includes a fixed leg body connected together and a sharp end at the bottom. A plurality of annular anti - detachment grooves are formed on the outer side wall of the bottom of the fixed leg body. The cross - section of the anti - detachment groove is an acute angle shape, the bottom edge is a horizontal plane or a plane inclined towards the axis, and the height of the edge of the plane inclined towards the axis is greater than the height of the inner ring.

[0017] Preferably, a plurality of guide rails are provided and symmetrically distributed. The guide rails match the bottom guiding edges of the moving base. The moving base is made of an I - beam to form a frame structure. A fine - tuning drive assembly is arranged on one side of the frame structure.

[0018] The fine - tuning drive assembly includes an adjustment seat and a driving handle. The adjustment seat is fixedly connected to one side of the top surface of the fixed base. The handle is threadedly connected to the adjustment seat. One side of the handle close to the moving base is rotatably connected to the moving base through an adapter block. The adapter block is fixedly connected to the moving base through a bolt.

[0019] Preferably, the first water pump, the second water pump, the elbow, the connecting pipe, the input pipe and the output pipe are aligned with each other through connecting flanges and then fastened by bolt assemblies. A gasket is arranged between two butt - joint connecting flanges. The gasket is provided with three - equal - division bolt through - holes or four - equal - division bolt through - holes or multi - equal - division bolt through - holes, or the three - equal - division bolt through - holes and the four - equal - division bolt through - holes are arranged on one gasket and share one of the through - holes.

[0020] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0021] A hierarchical relay pumping and drainage device of the present invention includes a sump, a multi - stage series pumping assembly, multiple pipes and an external sedimentation tank. The pumping assembly is composed of a control cabinet and a water pump. After being connected through pipes, a hierarchical relay pumping and drainage system is formed. The hierarchical relay pumping and drainage system starts to complete the reverse drainage operation along the inclined shaft inside the tunnel.

[0022] The structure of the present invention is simple and the operation is convenient. While ensuring hierarchical pumping and drainage, it saves space and workload. While meeting the requirements of pumping and drainage, it does not require additional construction of a sump, which can save costs and space, and is convenient for on-site construction. It can solve the problem of hierarchical pumping and drainage without setting up a sump under the conditions that the existing drainage system of a small-section large-slope inclined shaft is not adjusted and the construction space is limited. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the drawings.

[0024] Figure 1 Schematic diagram of the hierarchical relay pumping and drainage device of the present invention;

[0025] Figure 2 Front view of the pumping component of the present invention;

[0026] Figure 3 Top view of the pumping component of the present invention;

[0027] Figure 4 Side view of the pumping component of the present invention;

[0028] Figure 5 Schematic diagram of Embodiment 1 of the gasket of the present invention;

[0029] Figure 6 Schematic diagram of Embodiment 2 of the gasket of the present invention.

[0030] Description of reference numerals: 1, collecting pool; 2, input pipeline; 3, transfer pipeline; 4, output pipeline; 5, sedimentation tank; 100, primary pumping component; 101, first water pump; 102, first control cabinet; 200, secondary pumping component; 201, second water pump; 202, second control cabinet;

[0031] 6, elbow; 7, gasket; 8, connecting flange; 11, fixed base; 12, fixed leg; 13, guide rail; 14, moving base; 15, adjusting seat; 16, handle;

[0032] 1101, adjusting threaded hole; 1102, adjusting groove;

[0033] 1201, fixed leg body; 1202, sharp end; 1203, anti-detachment groove; 1204, connecting internal thread;

[0034] 701, three-equal-part bolt through-hole; 702, four-equal-part bolt through-hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] like Figures 1-6 As shown, a graded relay pumping and drainage device includes a water collecting tank 1 at the bottom of an inclined shaft, the water collecting tank 1 is arranged at the tunnel face that needs to be drained, and includes multiple stages of pumping components and multiple pipes connected in series. A group of the pumping components at the bottom and the water collecting tank 1, two adjacent stages of the pumping components, and the last group of the pumping components and the outside of the inclined shaft are connected through the pipes to form a graded relay pumping and drainage system. The graded relay pumping and drainage system is started to complete the reverse drainage operation inside the tunnel along the inclined shaft. When the multiple stages of pumping components are selected in series, the flow rate at the bottom is the largest and the flow rate at the tail is the smallest.

[0037] Specifically, the pumps in multiple pumping components are connected in series to absorb water through a larger flow pump, and a smaller flow pump is connected in series to increase the head, thereby achieving large-flow drainage while increasing the head without the need for additional water tanks to store water. This achieves the purpose of drainage while saving construction costs and construction space.

[0038] The pumping assembly includes a group of first-level pumping assemblies 100 and at least one group of second-level pumping assemblies 200. The first-level pumping assembly 100 is arranged on one side of the water collecting pool 1 and is connected through an input pipe 2; the second-level pumping assembly 200 is arranged in the middle of the inclined well, and the second-level pumping assembly 200 and the first-level pumping assembly 100 and any two adjacent second-level pumping assemblies 200 are connected through a switching pipe 3. The output end of the second-level pumping assembly 200 at the end is connected to the sedimentation tank 5 outside the inclined well through an output pipe 4.

[0039] The pumping assembly includes a pump for pumping and draining water and a control cabinet for control, wherein the pump and the control cabinet are electrically connected and arranged one by one. Specifically, when in use, a control panel is arranged on the front side of the separate control cabinet, and adjustment buttons and a liquid crystal display are arranged on the control panel, so that the operator can set and adjust parameters in a targeted manner according to the actual drainage volume requirements.

[0040] The primary pumping assembly 100 includes a first pumping pump 101 and a first control cabinet 102 which are electrically connected, and the water inlet of the first pumping pump 101 is connected to the water collection tank 1 through the input pipe 2;

[0041] The secondary pumping assembly 200 includes a second water pump 201 and a second control cabinet 202 which are electrically connected. The water inlet of the second water pump 201 is communicated with the water outlet of the first water pump 101 through the adapter pipe 3, and the water outlet of the second water pump 201 is communicated with the sedimentation tank 5 through the output pipe 4.

[0042] Elbows 6 for changing directions are installed on the water outlets of the first water pump 101 and the second water pump 201. The elbows 6 are communicated with the adapter pipe 3 and the water inlet ends of the output pipes 4.

[0043] As Figures 2-4 shown, one of the first water pumps 101 and at least one of the second water pumps 201 are installed in the inclined shaft through adjustable bases; the adjustable bases include a fixed base 11 and a movable base 14. The movable base 14 is movably connected to the fixed base 11. The bottom plates of the first water pump 101 and the second water pump 201 are fixedly connected to the movable base 14. The movable base 14 moves along the guide rail 13 on the top of the fixed base 11, thereby adjusting the distance between adjacent two water pumps.

[0044] Specifically, a plurality of adjustment grooves 1102 are formed on the bottom surface of the fixed base 11. An adjustment threaded hole 1101 is coaxially arranged above the adjustment groove 1102. A fixed leg 12 for adjusting the height is arranged below the adjustment groove 1102. A connecting internal thread 1204 is formed on the top surface of the fixed leg 12. An adjustment bolt passes through the adjustment threaded hole 1101 from top to bottom and is connected to the connecting internal thread 1204. Rotating the adjustment bolt drives the fixed leg 12 to move downward and is initially embedded and connected into the adjustment groove 1102. During adjustment, rotate the adjustment bolt at the top. After the bottom end of the adjustment bolt completely reaches the bottom of the connecting internal thread 1204, continue to rotate to drive the fixed leg 12 to rotate and move downward at the same time, so that it is buried deeper into the ground. By adjusting the burial depth, the top of the fixed base 11 is kept at a certain level.

[0045] The fixed leg 12 includes a fixed leg body 1201 and a sharp end 1202 at the bottom connected together. An outer side wall at the bottom of the fixed leg body 1201 is provided with a plurality of annular anti - detachment grooves 1203. The cross - section of the anti - detachment groove 1203 is acute - angled, the bottom side is a horizontal plane or a plane inclined towards the axis, and the edge height of the plane inclined towards the axis is greater than the inner ring height. The design of the anti - detachment groove 1203 can reduce the displacement caused by vibration to a certain extent and increase the stability of use. The setting of the sharp end 1202 facilitates the downward embedded connection of the fixed leg with the inclined - shaft ground and extends into the fixed ground. In addition, a pre - cast cement fixed ground can be set, and connecting nuts are embedded in the ground. At this time, the fixed leg body 1201 needs to be set as a hollow structure, fastened to the embedded connecting nut through screws, and the height adjustment is realized through the tightening fit position.

[0046] A plurality of guide rails 13 are provided and symmetrically distributed. The guide rails 13 match the bottom guide edges of the moving base 14. The moving base 14 is made of an I - beam to form a frame structure, and a fine - tuning drive assembly is arranged on one side of the frame structure.

[0047] The fine - tuning drive assembly includes an adjustment seat 15 and a handle 16 for driving. The adjustment seat 15 is fixedly connected to one side of the top surface of the fixed base 11. The handle 16 is threadedly connected in the adjustment seat 15. One side of the handle 16 close to the moving base 14 is rotatably connected to the moving base 14 through an adapter block 17. The adapter block 17 is fastened and connected to the moving base 14 through bolts. Specifically, the working section of the handle 16 is set in a stepped shape, and the round table at the end is embedded into the positioning groove of the moving base 14 with a clearance fit. The hole of the adapter block 17 is smaller than the diameter of the round table, so as to position it on the moving base 14 and rotate freely during rotation. When in use, the middle part of the handle 16 is a threaded rod. The threaded connection of the threaded rod with the adjustment seat 15 converts the rotary operation into a linear motion, thereby driving the moving base 14 and the water pump above to move synchronously, and finally realizing the position adjustment, which is convenient for connecting with the processed pipeline together.

[0048] As Figures 5-6As shown, the first water pump 101, the second water pump 201, the elbow 6, the transfer pipeline 3, the input pipeline 2 and the output pipeline 4 are aligned with each other through the connecting flange 8 and then fastened by the bolt assembly; a gasket 7 is arranged between two butt-jointed connecting flanges 8, and the gasket 7 is provided with three-equal-part bolt through-holes 701 or four-equal-part bolt through-holes 702 or multi-equal-part bolt through-holes, or the three-equal-part bolt through-holes 701 and the four-equal-part bolt through-holes 702 are arranged on a gasket 7 and share one of the through-holes. The diversity of the hole-opening structure is applicable to the fastening structures with different numbers of bolt assemblies, and the applicable scenarios are more. When the gasket is used, the quantity can be increased or decreased according to needs to ensure the sealing effect at the joint and avoid water leakage during the drainage process.

[0049] The using process of the present invention is as follows:

[0050] For the hierarchical relay pumping and drainage device of the present invention, water pumps are connected in series for relay. The large-flow water pump is used to absorb water, and a smaller-flow water pump is connected in series to increase the lift. While achieving large-flow drainage, the lift is increased, and there is no need to additionally process a water sump for water storage. While achieving the drainage purpose, the construction cost and construction space are saved. Among them, the flow rate of the water pump for absorbing water at the bottom should be greater than that of the water pump for increasing the lift, and the flow rate of the water pump is adjusted through the control cabinet to keep the flow rates of the water pumps as consistent as possible to ensure the normal and efficient use of each water pump. That is, multiple pumps connected in series for pressurization can achieve drainage operations with higher lift and longer distance.

[0051] Specifically, in a large-slope inclined shaft reverse slope drainage verification project of a certain project, in a set of embodiments, the first water pump 101 adopts a set of 400-80 (132kw) centrifugal pumps, and then the second water pump 201 connected adopts 200-80 (90kw) centrifugal pumps; in another embodiment, the first water pump 101 adopts a set of 600-30 (75kw) permanent magnet pumps, and then the second water pump 201 connected adopts 500-160 (355kw) single-stage double-suction pumps. The reverse slope drainage operation of the inclined shaft is realized, and while achieving large-flow drainage, the lift can reach more than 160m. It can be seen that multiple pumps connected in series for relay can achieve drainage operations with higher lift and longer distance, and can be widely applied to tunnel excavation construction operations.

[0052] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0053] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the spirit of the present invention design, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A hierarchical relay pumping and drainage device, comprising a water collecting tank (1) at the bottom of an inclined shaft, the water collecting tank (1) being arranged at a tunnel face where drainage is required, characterized in that: It comprises a plurality of pumping components connected in series and a plurality of pipes, wherein a group of the pumping components at the bottom and the water collecting tank (1), two adjacent pumping components and the last group of the pumping components and the outside of the inclined shaft are connected through the pipes to form a graded relay pumping and drainage system, which is started to complete the reverse drainage operation inside the tunnel along the inclined shaft; when the multi-stage pumping components are connected in series, the flow rate at the bottom is the largest and the flow rate at the tail is the smallest.

2. The hierarchical relay drainage device according to claim 1, characterized in that: The pumping assembly comprises a group of primary pumping assemblies (100) and at least one group of secondary pumping assemblies (200); the primary pumping assembly (100) is arranged on one side of the water collecting tank (1) and is connected via an input pipe (2); the secondary pumping assembly (200) is arranged in the middle of the inclined well; the secondary pumping assembly (200) and the primary pumping assembly (100) as well as any two adjacent secondary pumping assemblies (200) are connected via a transfer pipe (3); the output end of the secondary pumping assembly (200) at the end is connected to a sedimentation tank (5) outside the inclined well via an output pipe (4).

3. The hierarchical relay drainage device according to claim 2, characterized in that: The pumping assembly includes a pump for pumping and draining water and a control cabinet for control. The pump and the control cabinet are electrically connected and arranged in a one-to-one correspondence.

4. The hierarchical relay drainage device according to claim 3, characterized in that: The primary pumping assembly (100) comprises a first pumping pump (101) and a first control cabinet (102) which are electrically connected, and the water inlet of the first pumping pump (101) is connected to the water collection tank (1) through the input pipe (2); The secondary pumping assembly (200) comprises an electrically connected second pump (201) and a second control cabinet (202); the water inlet of the second pump (201) is connected to the water outlet of the first pump (101) via the adapter pipe (3); and the water outlet of the second pump (201) is connected to the sedimentation tank (5) via the output pipe (4).

5. The hierarchical relay drainage device according to claim 4, characterized in that: Elbows (6) for changing direction are installed on the water outlets of the first water pump (101) and the second water pump (201), and the elbows (6) are connected to the water inlet ends of the switching pipe (3) and the output pipe (4).

6. The hierarchical relay drainage device according to claim 4 or 5, characterized in that: One of the first water pumps (101) and at least one of the second water pumps (201) are installed in the inclined well via an adjustable base; The adjustable base comprises a fixed base (11) and a movable base (14); the movable base (14) is movably connected to the fixed base (11); the base plates of the first water pump (101) and the second water pump (201) are fixedly connected to the movable base (14); the movable base (14) moves along a guide rail (13) on the top of the fixed base (11), thereby adjusting the distance between two adjacent water pumps.

7. The hierarchical relay drainage device according to claim 6, characterized in that: A plurality of adjustment grooves (1102) are provided on the bottom surface of the fixed base (11), an adjustment threaded hole (1101) is coaxially provided above the adjustment groove (1102), a height-adjustable fixed leg (12) is provided below the adjustment groove (1102), a connecting internal thread (1204) is provided on the top surface of the fixed leg (12), an adjustment bolt penetrates the adjustment threaded hole (1101) from top to bottom and is then connected to the connecting internal thread (1204); the adjustment bolt is rotated to drive the fixed leg (12) to move downward, and the initial position is embedded and connected to the adjustment groove (1102).

8. The hierarchical relay drainage device according to claim 7, characterized in that: The fixed leg (12) comprises a fixed leg body (1201) and a sharp end (1202) at the bottom connected together, and a plurality of annular anti-slip grooves (1203) are provided on the outer side wall of the bottom of the fixed leg body (1201), and the cross section of the anti-slip groove (1203) is acute-angled, and the bottom edge is a horizontal plane or a plane inclined toward the axis, and the edge height of the plane inclined toward the axis is greater than the inner ring height.

9. The hierarchical relay drainage device according to claim 6, characterized in that: The guide rails (13) are provided in plurality and are symmetrically distributed, and the guide rails (13) match the bottom guide edge of the mobile base (14); the mobile base (14) is made of an I-beam to form a frame structure, and a fine-tuning drive assembly is provided on one side of the frame structure; The fine-tuning drive assembly comprises an adjustment seat (15) and a driving handle (16); the adjustment seat (15) is fixedly connected to one side of the top surface of the fixed base (11); the handle (16) is threadedly connected to the adjustment seat (15); a side of the handle (16) close to the movable base (14) is rotatably connected to the movable base (14) via an adapter block (17); and the adapter block (17) is fastened to the movable base (14) via bolts.

10. The hierarchical relay drainage device according to claim 4 or 5, characterized in that: The first water pump (101), the second water pump (201), the elbow (6), the switching pipe (3), the input pipe (2) and the output pipe (4) are aligned with each other via a connecting flange (8) and then fastened with a bolt assembly; a sealing gasket (7) is provided between the two butted connecting flanges (8); the sealing gasket (7) is provided with three equally divided bolt through holes (701) or four equally divided bolt through holes (702) or multiple equally divided bolt through holes, or the three equally divided bolt through holes (701) and the four equally divided bolt through holes (702) are provided on one sealing gasket (7) and one of the through holes is shared.

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