Drainage pumping station, drainage system and drainage method applied to steel spring floating slab ballast bed

Abstract

The invention discloses a drainage pumping station, a drainage system and a drainage method applied to steel spring floating slab ballast beds, the drainage pumping station comprises a ballast bed pump station arranged at the bottom of a tunnel structure, and two ends of the ballast bed pump station are respectively connected with two steel spring floating slab ballast beds which are arranged at intervals along the longitudinal direction; the primary water collecting device is arranged on the ballast bed pump station and is communicated with a central drainage ditch below the steel spring floating slab ballast bed; the secondary water collecting device is arranged on the ballast bed pump station and is communicated with the primary water collecting device; the liquid level detection device comprises a primary liquid level detector for detecting the liquid level in the primary sump and a secondary liquid level detector for detecting the liquid level in the pump maintenance chamber; and / or the control box is used for receiving the liquid level information sent by the liquid level detection device and controlling the states of the primary water collection device and the secondary water collection device. The method has the beneficial effects that the problem of failure of the steel spring floating slab ballast bed caused by gap deposition and shock absorption is effectively avoided, and the construction and maintenance cost is low.

Description

Technical Field

[0001] The present application belongs to the field of rail transit technology, and relates to a drainage pump station, a drainage system and a drainage method applied to a steel spring floating plate track bed. The present application relates to a drainage pump station, a drainage system and a drainage method applied to a steel spring floating plate track bed. Background Art

[0002] The wastewater pump house and the connecting channel of the urban rail transit section tunnel are generally constructed in a combined manner. After the excavation of the connecting channel is completed, the wastewater pump house needs to be excavated 3 to 5 meters below its bottom. The construction period is long and the construction risk is very high. Some cities have improved the steel pipe segments at the pump house. For example, a Chinese patent for a built-in pump house structure for a shield tunnel (application number 201720580856.X, authorization announcement number CN207111174U) sets up a built-in drainage pump house in the tunnel, uses the concave space of the shield steel pipe segment to place the drainage pump, and sets a sump in the upper roadbed space. This solves the construction difficulty of the wastewater pump house to a certain extent, but it also brings new problems. For example, it is only applicable to shield tunnels. The shield pipe segment at the water pump installation site must use a specially designed steel pipe segment. The steel pipe segment requires special design and processing and is susceptible to oxidation corrosion and stray current corrosion. Another example is a roadbed drainage structure (application number 202010613979.5, authorization announcement number CN111719344A), which uses a first seepage pipe and a second seepage pipe to form a seepage grid under the track roadbed, so that the seepage water under the track roadbed can infiltrate into the seepage pipe in time and then be discharged through the seepage pipe. Although the above pump room structure improves the roadbed drainage problem to a certain extent, it still cannot solve the problems of the steel spring floating plate roadbed: 1. The effective depth of the steel spring floating plate roadbed is very small. The available depth of the ordinary roadbed sump is 635mm, while the available depth of the steel spring floating plate roadbed is only 275mm; 2. In traditional roadbed pumping stations, the stop pump liquid level of the roadbed pump is generally above 200mm, and the available water storage capacity is limited. It is necessary to select multiple pumps with low stop pump liquid level and small flow in parallel to meet the drainage requirements. The length of the parallel pump barrel will reach more than 7 units; 3. The stop pump liquid level often submerges the 30mm shock-absorbing gap between the steel spring floating plate and the base, affecting the shock-absorbing effect; 4. The leakage water in the subway section contains calcification, which condenses in the 30mm shock-absorbing gap, causing shock absorption failure and extremely difficult to clean.

[0003] Therefore, there is an urgent need for a drainage pump station that is suitable for steel spring floating plate ballast, can prevent the steel spring floating plate ballast from silting up in the shock-absorbing gaps and shock-absorbing failure, and is easy to operate and maintain. Summary of the invention

[0004] In view of the shortcomings of the prior art mentioned above, the purpose of the present application is to provide a drainage pump station, a drainage system and a drainage method applied to a steel spring floating plate roadbed, so as to solve the problems that the current steel spring floating plate roadbed is prone to failure after long-term use, has low drainage efficiency and high operation and maintenance costs.

[0005] To solve the above problems, the technical solution adopted in this application is: The present invention provides a drainage pump station applied to a steel spring floating plate ballast, characterized in that it comprises: A ballast pump station, wherein the ballast pump station is arranged at the bottom of the tunnel structure, and the extension direction of the tunnel structure is defined as the longitudinal direction, and the two ends of the ballast pump station are respectively connected to two steel spring floating plate ballasts arranged at intervals in the longitudinal direction; The primary water collection device is installed on the ballast pump station and connected to the central drainage ditch under the steel spring floating plate ballast, and is used to collect the accumulated water discharged from the steel spring floating plate ballast through the central drainage ditch and transport the collected accumulated water to the secondary water collection structure; The secondary water collection device is installed on the track bed pump station and connects the primary water collection device with the station main wastewater pump room or outdoor pipe network, and is used to receive the accumulated water transported by the primary water collection device and discharge the collected accumulated water to the station main wastewater pump room or outdoor pipe network; A liquid level detection device, comprising a primary liquid level detector for detecting the liquid level in the primary sump and a secondary liquid level detector for detecting the liquid level in the pump inspection chamber; and / or The control box is installed on the roadbed pump station and connected with the primary water collection device, the secondary water collection device and the liquid level detection device. It is used to receive the liquid level information sent by the liquid level detection device and control the status of the primary water collection device and the secondary water collection device.

[0006] As a preferred embodiment of the present application, the primary water collection device includes a primary water collection pit and at least one primary drainage pump, the primary water collection pit is arranged at the end of the roadbed pump station close to the steel spring floating plate roadbed in the longitudinal direction, the primary water collection pit is connected to the central drainage ditch below the steel spring floating plate roadbed, and the bottom of the primary water collection pit is located below the horizontal reference plane where the lowest point of the shock-absorbing gap between the steel spring floating plate roadbed and the roadbed base is located; at least one set of primary drainage pumps is installed in the primary water collection pit, the water inlet of the primary drainage pump is connected to the primary water collection pit, and the water outlet of the primary drainage pump is discharged to the secondary water collection pit through the drainage pipe system, the primary drainage pump is connected to the control box, and the primary drainage pump is controlled by the control box, so that the primary drainage pump can pump the accumulated water in the primary water collection pit to the secondary water collection device under the control of the control box.

[0007] As a preferred embodiment of the present application, the primary drainage pump is a low-water-level submersible sewage pump, and the pump start-up liquid level thereof is lower than the horizontal reference plane where the lowest point of the shock-absorbing gap between the steel spring floating plate ballast and the ballast base is located.

[0008] As a preferred embodiment of the present application, the stop pump liquid level of the primary drainage pump is 50 to 100 mm higher than the bottom of the primary sump.

[0009] As a preferred embodiment of the present application, the secondary water collection device is located between two adjacent primary water collection devices, including a secondary water collection pit and a secondary drainage pump. The secondary water collection pit is arranged on the roadbed pump station and is connected with the water outlet of the primary drainage pump through a drainage pipe system. The secondary water collection pit is provided with several pump maintenance rooms connected to the secondary water collection pit in the longitudinal direction; a secondary drainage pump is arranged in at least one of the pump maintenance rooms, the water inlet of the secondary drainage pump is connected with the pump maintenance room, the water outlet of the secondary drainage pump is connected with the main wastewater pump room of the station through the drainage pipe system or is directly discharged to the outside, the secondary drainage pump is connected to the control box, and the secondary drainage pump is controlled by the control box, so that the secondary drainage pump can, under the control of the control box, pump the accumulated water in the pump maintenance room and the secondary water collection pit to the main wastewater pump room of the station or the outdoor pipeline network, thereby completing the pumping and drainage of the accumulated water in the secondary water collection pit.

[0010] As a preferred embodiment of the present application, a primary pump stop liquid level and multiple primary pump start liquid levels are sequentially arranged in the primary sump from bottom to top. The number of primary pump start liquid levels is consistent with the total number of primary drainage pumps and is arranged at intervals from bottom to top.

[0011] As a preferred embodiment of the present application, a primary warning liquid level is also provided in the primary sump, and the warning liquid level is flush with the primary pump start liquid level at the top layer in the pit or is set separately.

[0012] As a preferred embodiment of the present application, a secondary pump stop liquid level and multiple secondary pump start liquid levels are sequentially arranged in the secondary sump from bottom to top. The number of secondary pump start liquid levels is consistent with the total number of secondary drainage pumps and is arranged at intervals from bottom to top.

[0013] As a preferred embodiment of the present application, a secondary warning liquid level is also provided in the secondary sump, and the secondary warning liquid level is flush with the secondary pump start liquid level at the top layer in the pit or is set separately.

[0014] As a preferred embodiment of the present application, the primary sump is provided with a pump stop liquid level from bottom to top, and a pump start liquid level which is the same in number as the primary drainage pumps and is arranged at intervals from bottom to top.

[0015] As a preferred embodiment of the present application, the primary sump and the pump maintenance room penetrate the ballast pump station and at least part of the tunnel structure in the thickness direction of the ballast pump station.

[0016] As a preferred embodiment of the present application, the volume of the primary sump is smaller than the sum of the volumes of the secondary sump and the pump maintenance room.

[0017] As a preferred embodiment of the present application, the primary sump is connected to the secondary sump through a connecting pipe and / or a connecting ditch, and the top of the connecting pipe and / or the connecting ditch is flat. When encountering large water volume conditions such as firefighting conditions or interval flushing, pipe burst, etc., the primary drainage pump fails to drain water in time, and the excess water enters the secondary sump through the connecting pipe and / or the connecting ditch between the secondary sump and the primary sump, and is drained away by the secondary drainage pump.

[0018] As a preferred embodiment of the present application, the drainage pipe system includes a first water pump outlet pipe connected one-to-one with the primary drainage pump, a first water pump pipe connected one-to-one with the first water pump outlet pipe, a second water pump pipe connected one-to-one with the secondary drainage pump, a second water pump pipe connected one-to-one with the second water pump outlet pipe, a main drainage pipe connected to all the first water pump pipes and the second water pump pipes, a main control valve arranged on the main drainage pipe and electrically connected to a control box, and / or a drainage valve assembly arranged between the main control valve and each of the first water pump outlet pipes and the second water pump outlet pipes and electrically connected to the control box.

[0019] As a preferred embodiment of the present application, the first water pump outlet pipe is connected to the corresponding first water pump pipe, and the second water pump outlet pipe is connected to the corresponding second water pump pipe through a drainage valve assembly, and the drainage valve assembly includes a reducer, a rubber flexible joint, a pressure gauge, a check valve, a gate valve and / or a valve unit connected in series in sequence, the reducer is connected to the first water pump outlet pipe or the second water pump outlet pipe, and the valve unit is connected to the first water pump pipe or the second water pump pipe, so as to realize functions such as connection of pipes with different diameters, seismic isolation, shutoff, check, pressure display, etc.

[0020] As a preferred embodiment of the present application, the drainage pump station described in the present invention also includes at least one backwash system for backwashing and desilting the secondary water collection device and the secondary water collection device, the backwash system includes a backwash pipe and a backwash valve connected to the backwash pipe, one end of the backwash pipe is connected to the main drainage pipe, and the other end is connected to the secondary water collection pit.

[0021] As a preferred embodiment of the present application, the top opening of the primary sump and the top opening of the pump maintenance room are both provided with a cover plate.

[0022] As a preferred embodiment of the present application, the primary liquid level detector and the secondary liquid level detector are respectively installed on the inner wall of the primary sump and the pump maintenance room through corresponding liquid level detector mounting frames.

[0023] As a preferred embodiment of the present application, the secondary drainage pumps are respectively installed in the pump maintenance room through drainage pump mounting frames.

[0024] As a preferred embodiment of the present application, the tunnel structure is provided with a cavity for accommodating the control box, and the outer shell of the control box is connected to the cavity via a control box mounting frame.

[0025] As a preferred embodiment of the present application, the secondary drainage pump is a submersible sewage pump.

[0026] The present application also provides a drainage system, characterized in that it includes a drainage pump station applied to a steel spring floating plate ballast.

[0027] The present application also provides a drainage method, characterized in that the drainage method is performed using the drainage pump station or the drainage system applied to the steel spring floating plate ballast, and comprises the following steps: The primary liquid level detector detects the liquid level in the primary sump and sends the liquid level information to the control box in real time; The control box receives the liquid level information of the accumulated water in the primary sump sent by the primary liquid level detector, generates a pump start instruction and / or a pump stop instruction according to the liquid level information of the accumulated water in the primary sump, and stores the pump start instruction and / or the pump stop instruction in the internal address of the control box; the pump start instruction is used to instruct one or more primary drainage pumps to start when the actual liquid level of the accumulated water in the primary sump is equal to or higher than the pump start liquid level; the pump stop instruction is used to instruct one or more primary drainage pumps to stop when the actual liquid level of the accumulated water in the primary sump is equal to or lower than the pump stop liquid level; The primary drainage pump operates according to the received primary pump start instruction and / or primary pump stop instruction; if it is a primary pump start instruction, one or more primary drainage pumps receiving the primary pump start instruction operate to pump the accumulated water in the primary sump to the secondary sump, and the accumulated water in the secondary sump is collected in each pump maintenance room; if it is a primary pump stop instruction, one or more primary drainage pumps receiving the primary pump stop instruction stop operating; The secondary liquid level detector detects the liquid level in the pump maintenance room and sends the liquid level information to the control box in real time; The control box receives the liquid level information of the accumulated water in the pump maintenance chamber sent by the secondary liquid level detector, generates a secondary pump start instruction and / or a secondary pump stop instruction according to the liquid level information of the accumulated water in each pump maintenance chamber, and stores the secondary pump start instruction and / or the secondary pump stop instruction in the internal address of the control box; the secondary pump start instruction is used to instruct one or more secondary drainage pumps to start; the secondary pump stop instruction is used to instruct one or more secondary drainage pumps to stop; The secondary drainage pump operates according to the received secondary pump start instruction and / or secondary pump stop instruction; if it is a secondary pump start instruction, one or more secondary drainage pumps receiving the secondary pump start instruction operate to pump the accumulated water in the secondary water collection device to the station main wastewater pump room or outdoor pipe network; if it is a secondary pump stop instruction, one or more primary drainage pumps receiving the secondary pump stop instruction stop operation; The control box controls the backwash system and the secondary drainage pump to perform backwash and desilt operations on the secondary sump.

[0028] The present invention sets two primary sump and secondary sump of different sizes through the structure of the ballast itself, wherein the primary drainage pump in the primary sump has a small pump body, a small flow rate, and a low head, but a low pump-stop liquid level, which meets the drainage requirements of tunnel structure leakage water, and can control the water accumulation depth in the steel spring floating plate ballast area below the shock-absorbing gap between the overall ballast of the steel spring floating plate and the ballast base, avoiding the problem of siltation and shock-absorbing failure caused by the pump-stop liquid level being higher than the shock-absorbing gap in the traditional ballast pump station; the secondary drainage pump in the secondary sump has a larger pump body, a large flow rate, and a high head, but a high pump-stop liquid level, which meets the requirements of tunnel structure leakage water, flushing water and fire drainage, and can discharge the accumulated water in the pit to an adjacent station or outdoors. When there is a large flow drainage demand for fire fighting, flushing, pipe bursting, etc., the wastewater enters the secondary sump through the connecting pipe or connecting ditch between the primary sump and the secondary sump, and is discharged by the secondary drainage pump. The present invention only requires the installation of corresponding liquid level detectors and control boxes, making the construction and maintenance of the drainage pump station more convenient; and the present invention can automatically flush and desilt the secondary sump through the backwash system, control box, and secondary drainage pump, further improving the construction convenience and maintenance convenience of the drainage pump station.

[0029] Compared with the prior art, the beneficial effects of the present application are as follows: the present invention adopts several sets of different primary water collection devices and secondary water collection devices, and uses the primary water collection devices to drain water within the available depth range of the steel spring floating plate roadbed, so that the accumulated water in the steel spring floating plate roadbed area is controlled below the shock-absorbing gap between the integral roadbed of the steel spring floating plate and the roadbed base, thereby avoiding the problems of siltation in the shock-absorbing gap and shock-absorbing failure; a secondary water collection pit is set separately to maximize the use of the available depth of the roadbed, which is not affected by the steel spring floating plate, and the drainage pump with a larger stop pump level, flow rate, and head can be selected, and the number is less, which can avoid the risk of siltation and shock-absorbing failure of the steel spring floating plate roadbed, reduce the water volume of the conventional steel spring floating plate roadbed pump station pump, improve drainage efficiency, and improve drainage safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a flow chart of the drainage method of the present invention.

[0031] Figure 2 It is a top view of the drainage pump station of the present invention.

[0032] Figure 3 for Figure 2 One of the partial enlarged images.

[0033] Figure 4 for Figure 2 The second partial enlarged image.

[0034] Figure 5 It is a cross-sectional view of the primary sump of the present invention.

[0035] Figure 6 It is a cross-sectional view of the secondary sump of the present invention.

[0036] Figure 7 It is a schematic diagram of the connection between the drainage pipeline system and the primary drainage pump of the present invention.

[0037] Figure 8 It is a schematic diagram of the connection between the drainage pipeline system and the secondary drainage pump of the present invention.

[0038] In the accompanying description: 1-ballast pump station; 10-cover plate; 2-primary water collection device; 21-primary water collection pit; 22-primary drainage pump; 211-primary pump stop level; 212-primary pump start level; 213-primary alarm level; 214-primary water collection pit bottom; 3-secondary water collection device; 31-secondary water collection pit; 32-secondary drainage pump; 33-connecting ditch; 311-pump maintenance room; 312-secondary pump stop level; 313-secondary pump start level; 314-secondary alarm level; 315-bottom of secondary water collection pit; 4-liquid level detection device; 41-primary liquid level detector; 42-secondary liquid level detector; 5-Control box; 6-backwash system; 61-backwash pipe; 62-backwash valve; 7- Tunnel structure; 8-Steel spring floating slab ballast bed; 81-Central drainage ditch; 82-Shock-absorbing gap; 9-drainage pipeline system; 91-first water pump outlet pipe; 92-first water pump; 93-second water pump outlet pipe; 94-second water pump; 95-main drainage pipe; 96-main control valve; 97-drainage valve assembly; 971-reducing pipe; 972-rubber flexible joint; 973-pressure gauge; 974-check valve; 975-gate valve; 976-valve unit. DETAILED DESCRIPTION

[0039] The following describes the implementation of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application.

[0040] It should be noted that the process equipment or devices not specifically specified in the following embodiments are all conventional equipment or devices in the art.

[0041] In addition, it should be understood that one or more method steps mentioned in this application do not exclude the existence of other method steps before or after the combination step or the insertion of other method steps between these explicitly mentioned steps, unless otherwise specified; it should also be understood that the combination connection relationship between one or more devices / apparatuses mentioned in this application does not exclude the existence of other devices / apparatuses before or after the combination device / apparatus or the insertion of other devices / apparatuses between these two explicitly mentioned devices / apparatuses, unless otherwise specified. Moreover, unless otherwise specified, the numbering of each method step is only a convenient tool for identifying each method step, and is not intended to limit the order of arrangement of each method step or the scope of implementation of this application. Changes or adjustments in their relative relationships shall also be regarded as the scope of implementation of this application without substantial changes in the technical content.

[0042] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0043] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "inner", "outer", "axial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0044] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0046] The present application is further described below in conjunction with specific embodiments, but the protection scope of the present application is not limited thereto.

[0047] like Figure 2~Figure 4 As shown, the present invention provides a drainage pump station applied to a steel spring floating plate ballast, comprising: A ballast pump station 1, wherein the ballast pump station 1 is arranged at the bottom of a tunnel structure 7, wherein the extension direction of the tunnel structure 7 is defined as the longitudinal direction, and both ends of the ballast pump station 1 are respectively connected to two steel spring floating plate ballasts 8 arranged at intervals in the longitudinal direction; The primary water collection device 2 is arranged on the ballast pump station 1 and connected to the central drainage ditch 81 below the steel spring floating plate ballast 8, and is used to collect the accumulated water discharged from the steel spring floating plate ballast 8 through the central drainage ditch 81 and transport the collected accumulated water to the secondary water collection structure 3; The secondary water collection device 3 is arranged on the track bed pump station 1 and connects the primary water collection device 2 with the station main wastewater pump room or the outdoor pipe network, and is used to receive the accumulated water transported by the primary water collection device 2 and discharge the accumulated water received from the primary water collection device 2 to the station main wastewater pump room or the outdoor pipe network; A liquid level detection device 4, comprising a primary liquid level detector 41 for detecting the liquid level in the primary sump 21 and a secondary liquid level detector 42 for detecting the liquid level in the pump maintenance chamber 311; and / or The control box 5 is arranged on the track bed pump station 1 and is connected with the primary water collection device 2, the secondary water collection device 3 and the liquid level detection device 4, and is used for receiving the liquid level information sent by the liquid level detection device 4 and controlling the status of the primary water collection device 2 and the secondary water collection device 3.

[0048] like Figure 2 and Figure 3As shown, the primary water collection device 2 includes a primary water collection pit 21 and at least one primary drainage pump 22. The primary water collection pit 21 is arranged at the end of the roadbed pump station 1 close to the steel spring floating plate roadbed 8 in the longitudinal direction. The primary water collection pit 21 is connected to the central drainage ditch 81 below the steel spring floating plate roadbed 8, and the bottom of the primary water collection pit 21 is located below the horizontal reference plane where the lowest point of the shock-absorbing gap 82 between the steel spring floating plate roadbed 8 and the roadbed base is located; the primary drainage pump 22 is arranged in the primary water collection pit 21, the water inlet of the primary drainage pump 22 is connected to the primary water collection pit 21, and the water outlet of the primary drainage pump 22 is discharged to the secondary water collection pit 31 through the drainage pipeline system 9. The primary drainage pump 22 is connected to the control box 5, and the primary drainage pump 22 is controlled by the control box 5, so that the primary drainage pump 22 can pump the accumulated water in the primary water collection pit 21 to the secondary water collection device 3 under the control of the control box 5.

[0049] like Figure 2 and Figure 3 As shown, the primary drainage pump 22 is a low-water level submersible sewage pump, and its starting pump liquid level is lower than the horizontal reference plane where the lowest point of the shock-absorbing gap between the steel spring floating plate ballast and the ballast base is located.

[0050] In some embodiments of the present application, the stop pump liquid level of the primary drainage pump is about 50 to 100 mm higher than the bottom 214 of the primary sump.

[0051] like Figure 2 and Figure 4 As shown, the secondary water collection device 3 is located between two adjacent primary water collection devices 2, and includes a secondary water collection pit 31 and a secondary drainage pump 32. The secondary water collection pit 31 is arranged on the roadbed pump station 1 and is connected with the outlet of the primary drainage pump 22 through the drainage pipe system 9. The secondary water collection pit 31 is longitudinally provided with several pump maintenance rooms 311 connected with the secondary water collection pit 31; at least one secondary drainage pump 32 is arranged in each of the pump maintenance rooms 311, and the water inlet of the secondary drainage pump 32 is connected with the pump maintenance room 311, and the water outlet of the secondary drainage pump 32 is connected with the main wastewater pump room of the station through the drainage pipe system 9 or is directly discharged to the outside, and the secondary drainage pump 32 is connected to the control box 5, and the secondary drainage pump 32 is controlled by the control box 5.

[0052] like Figure 5 and Figure 6 As shown, the primary sump 21 and the pump maintenance room 311 penetrate the ballast pump station 1 and at least a portion of the tunnel structure 7 in the thickness direction of the ballast pump station 1 .

[0053] like Figure 5As shown, the primary water collection pit 21 is provided with a primary pump stop level 211 and multiple primary pump start levels 212 from bottom to top, the primary pump stop level 211 corresponds to the pump stop level of the primary drainage pump 22; the primary pump start level 212 corresponds to the pump start level of the primary drainage pump 22, and the multiple primary pump start levels 211 are consistent in number with the primary drainage pumps 22 and are arranged at intervals from bottom to top. Specifically, when the accumulated water in the primary water collection pit 21 reaches the primary pump start level at the bottom layer, only one primary drainage pump 22 is started to pump out the accumulated water in the primary water collection pit; when the accumulated water in the primary water collection pit 21 reaches the primary pump start level at the second lower layer, two primary drainage pumps 22 are started to pump out the accumulated water in the primary water collection pit; and so on, when the accumulated water in the primary water collection pit reaches the primary pump start level at the top layer, all primary drainage pumps are started at the same time to pump out the accumulated water in the primary water collection pit.

[0054] like Figure 5 As shown, a primary warning liquid level 213 is also provided in the primary sump 21, and the warning liquid level 213 is flush with the primary pump start liquid level at the top layer in the pit. That is, when the accumulated water in the primary sump reaches the primary pump start liquid level at the top layer, all primary drainage pumps are started at the same time to pump out the accumulated water in the primary sump, and at the same time, the control box 5 transmits an alarm signal to the station control room to remind the staff in the station.

[0055] like Figure 6 As shown, a secondary pump-off level 312 and a plurality of secondary pump-on levels 313 are sequentially provided in the secondary sump 31 from bottom to top, and the secondary pump-off level 312 corresponds to the pump-off level of the secondary drainage pump 32; the secondary pump-on level 313 corresponds to the pump-on level of the secondary drainage pump 32, and the plurality of secondary pump-on levels 313 are consistent in number with the secondary drainage pump 32 and are spaced apart from bottom to top. Specifically, when the accumulated water in the secondary sump 31 reaches the secondary pump-starting liquid level 313 at the bottom layer, only one secondary drainage pump 32 is started to pump out the accumulated water in the secondary sump 31; when the accumulated water in the secondary sump 31 reaches the secondary pump-starting liquid level 32 at the next lower layer, two secondary drainage pumps 32 are started to pump out the accumulated water in the secondary sump 31; and so on, when the accumulated water in the secondary sump 31 reaches the secondary pump-starting liquid level 313 at the top layer, all the secondary drainage pumps 32 are started at the same time to pump out the accumulated water in the secondary sump 31.

[0056] like Figure 6 As shown, a secondary warning liquid level 314 is also provided in the secondary sump 31, and the secondary warning liquid level is flush with the secondary pump start liquid level at the top layer in the pit. That is, when the accumulated water in the secondary sump reaches the secondary pump start liquid level at the top layer, all secondary drainage pumps are started at the same time to pump out the accumulated water in the secondary sump, and at the same time, the control box 5 transmits an alarm signal to the station control room to remind the staff in the station.

[0057] like Figure 7 and Figure 8 As shown, the drainage pipe system 9 includes a first water pump outlet pipe 91 connected to the primary drainage pump 22 in a one-to-one correspondence, a first water pump pipe 92 connected to the first water pump outlet pipe 91 in a one-to-one correspondence, a second water pump outlet pipe 93 connected to the secondary drainage pump 32 in a one-to-one correspondence, a second water pump pipe 94 connected to the second water pump outlet pipe 93 in a one-to-one correspondence, a main drainage pipe 95 connected to all the first water pump pipes 92 and the second water pump pipes 94, a main control valve 96 arranged on the main drainage pipe 95 and electrically connected to the control box 5, and a drainage valve assembly 97 arranged between the main control valve 96 and each of the first water pump outlet pipes 91 and the second water pump outlet pipes 93 and electrically connected to the control box 5.

[0058] like Figure 7 and Figure 8 As shown, the number of the main drainage pipes 95 is two or more, and the multiple main drainage pipes 95 are connected through one or more main control valves 96.

[0059] like Figure 7 As shown, the first water pump outlet pipe 91 is connected to the corresponding first water pump pipe 92, and the second water pump outlet pipe 93 is connected to the corresponding second water pump pipe 94 through a drainage valve assembly 97, and the drainage valve assembly 97 includes a reducer 971, a rubber flexible joint 972, a pressure gauge 973, a check valve 974, a gate valve 975 and a valve unit 976 connected in series in sequence. The reducer is connected to the first water pump outlet pipe 91 or the second water pump outlet pipe 93, and the valve unit is connected to the first water pump pipe 92 or the second water pump pipe 94. It can realize functions such as connection of pipes with different diameters, seismic isolation, shutoff, check, pressure display, etc.

[0060] like Figure 2 and Figure 8As shown, the steel spring floating plate roadbed drainage pump station of the present invention also includes two sets of backwashing systems 6 for backwashing and desilting the secondary water collecting device 3 and the secondary water collecting device 3, and the secondary water collecting pit 31 can be backwashed regularly or according to demand. The backwashing system 6 includes a backwashing pipe 61 and a backwashing valve 62 connected to the backwashing pipe 61 to control the on-off of the backwashing pipe 61 and the flow rate of the liquid in the pipe. One end of the backwashing pipe 61 is connected to the main drainage pipe 95, and the other end is connected to the secondary water collecting pit 31. The backwashing valve 62 controls the on-off of the backwashing pipe 61 and the flow rate of the liquid in the pipe, thereby flushing and desilting the secondary water collecting pit. When the secondary sump 31 needs to be backwashed, the staff can send a backwash signal to the control box 5 on site or through the station control room. After receiving the backwash signal, the control box 5 will send a backwash signal to the secondary drainage pump 32, the backwash valve 62, the main control valve 96, and the drainage valve assembly 97. After receiving the backwash signal, the secondary drainage pump 32, the backwash valve 62, the main control valve 96, and the drainage valve assembly 97 will perform corresponding actions to achieve automatic cleaning of the secondary sump 31, thereby avoiding siltation in the secondary sump 31 and the pump maintenance room 311. Specifically, when it is necessary to pump out the accumulated water in the secondary sump 31, the main control valve and the drain valve assembly 97 are opened, and the backwash valve 62 is closed, so that the accumulated water pumped by the secondary drainage pump 32 can flow through the second water pump outlet pipe 93, the drain valve assembly 97, the second water pumping pipe 94, and the main drainage pipe 95 in sequence and be sent to the station's main wastewater pump room or outdoor pipe network; when it is necessary to backwash the accumulated water in the secondary sump 31, the main control valve is closed, the drain valve assembly 97 and the backwash valve 62 are opened, so that the accumulated water pumped by the secondary drainage pump 32 can flow through the second water pump outlet pipe 93, the drain valve assembly 97, the second water pumping pipe 94, and the backwash pipe 61 in sequence and be sent back into the secondary sump 31, thereby performing backwashing and desilting operations on the secondary sump 31 until the flushing meets the requirements.

[0061] like Figure 2 As shown, the secondary water collection pit 31 is a rectangular water pit arranged longitudinally between the two primary water collection pits. Several transverse grooves are arranged on both sides of the secondary water collection pit 31 along the width direction for installing the first water pumping pipe 92, the second water pumping pipe 94 and / or the backwash pipe 61; the two ends of the secondary water collection pit 31 along the width direction are respectively connected with the primary water collection pit 21 on the same side through connecting pipes and / or connecting grooves 33, which can not only realize the direct connection between the secondary water collection pit 31 and the primary water collection pit 21, but also accommodate drainage pipes such as the first water pumping pipe 92.

[0062] like Figure 2 As shown, the top opening of the primary sump 21 and the top opening of the pump maintenance room 311 are both equipped with a cover plate 10. To ensure safe passage of personnel during maintenance and evacuation of the roadbed surface, the fixing method and weight of the cover plate can prevent the piston wind from causing safety accidents when the train passes.

[0063] In some embodiments of the present application, the primary liquid level detector 41 and the secondary liquid level detector 42 are respectively installed on the inner wall of the primary sump 21 and the pump maintenance room 311 through corresponding liquid level detector mounting frames.

[0064] In some embodiments of the present application, the secondary drainage pumps are respectively installed in the pump maintenance room through drainage pump mounting frames.

[0065] In some embodiments of the present application, the tunnel structure is provided with a cavity for accommodating the control box, and the outer shell of the control box is connected to the cavity via a control box mounting frame.

[0066] In some embodiments of the present application, the secondary drainage pump is a submersible sewage pump.

[0067] The present invention also provides a drainage system, comprising the drainage pump station applied to the steel spring floating plate ballast.

[0068] like Figure 1 As shown, a drainage method is performed using the drainage pump station or the drainage system applied to the steel spring floating plate ballast, comprising the following steps: S1, the primary liquid level detector 41 detects the liquid level in the primary sump 21 and sends the liquid level information to the control box 5 in real time; S2, the control box 5 receives the liquid level information of the accumulated water in the primary sump 21 sent by the primary liquid level detector 41, generates a pump start instruction and / or a pump stop instruction according to the liquid level information of the accumulated water in the primary sump 21, and stores the pump start instruction and / or the pump stop instruction in the internal address of the control box 5; the pump start instruction is used to instruct one or more primary drainage pumps 22 to start when the actual liquid level of the accumulated water in the primary sump 21 is equal to or higher than the pump start liquid level; the pump stop instruction is used to instruct one or more primary drainage pumps 22 to stop when the actual liquid level of the accumulated water in the primary sump 21 is equal to or lower than the pump stop liquid level; S3, the primary drainage pump 22 operates according to the received primary pump start instruction and / or primary pump stop instruction; if it is a primary pump start instruction, one or more primary drainage pumps 22 receiving the primary pump start instruction operate to pump the accumulated water in the primary sump 21 to the secondary sump 31, and the accumulated water in the secondary sump 31 flows into each pump maintenance room 311; if it is a primary pump stop instruction, one or more primary drainage pumps 22 receiving the primary pump stop instruction stop operation; S4, the secondary liquid level detector 42 detects the liquid level height in the pump maintenance room 311 and sends the liquid level information to the control box 5 in real time; S5, the control box 5 receives the liquid level information of the accumulated water in the pump maintenance room 311 sent by the secondary liquid level detector 42, generates a secondary pump start instruction and / or a secondary pump stop instruction according to the liquid level information of the accumulated water in each pump maintenance room 311, and stores the secondary pump start instruction and / or the secondary pump stop instruction in the internal address of the control box 5; the secondary pump start instruction is used to instruct one or more secondary drainage pumps 32 to start; the secondary pump stop instruction is used to instruct one or more secondary drainage pumps 32 to stop; S6, the secondary drainage pump 32 operates according to the received secondary pump start instruction and / or secondary pump stop instruction; if it is a secondary pump start instruction, one or more secondary drainage pumps 32 receiving the secondary pump start instruction operate to pump the accumulated water in the secondary water collection device 3 to the station main wastewater pump room or outdoor pipe network; if it is a secondary pump stop instruction, one or more primary drainage pumps 22 receiving the secondary pump stop instruction stop operation; S7. After closing the main drainage valve 96 and opening the backwash valve 62, the operator can operate the control box 5 to control the backwash system 6 and the secondary drainage pump 32 to perform backwashing and desilting operations on the secondary sump 31.

[0069] Specifically, there are two sets of primary water collection devices 2 in the present application, which are respectively arranged at the two longitudinal ends of the roadbed pump station 1. Two primary drainage pumps 22 and a set of primary liquid level detectors 41 are configured in each primary water collection pit 21. The primary water collection pit is provided with a primary pump stop liquid level and two primary pump start liquid levels from bottom to top; after reaching the primary pump start liquid level of the lowest layer, the primary liquid level detector 41 sends a liquid level signal of the accumulated water in the primary water collection pit 21 to the control box, and the control box 5 receives the liquid level information of the accumulated water in the primary water collection pit 21 sent by the primary liquid level detector 41, and compares the actual liquid level information of the accumulated water in the primary water collection pit 21 with the pre-stored primary pump start liquid level information, and determines that the actual liquid level information is equal to or exceeds the primary pump start liquid level information of the lowest layer. At this time, the control box starts a primary drainage pump 22 to discharge the accumulated water in the pit to the secondary water collection pit 31 through the drainage pipe system 9. When the accumulated water in the secondary water collection pit 31 accumulates to a certain level, it will flow into the pump maintenance room 31. 1; when the water level of the accumulated water in the primary sump 21 continues to rise and reaches the primary pump-starting level of the primary drainage pump on the upper layer, the primary liquid level detector 41 again sends a liquid level signal of the accumulated water in the primary sump 21 to the control box, and the control box 5 receives the liquid level information of the accumulated water in the primary sump 21 sent by the primary liquid level detector 41, and compares the actual liquid level information of the accumulated water in the primary sump 21 with the pre-stored primary pump-starting level information, and judges that the actual liquid level information is equal to or exceeds the primary pump-starting level information of the upper layer, and the control box starts the two primary drainage pumps 22 to run at the same time, and discharges the accumulated water in the pit to the secondary sump 31 through the drainage pipe system 9; if it is judged that the water level of the accumulated water in the pit reaches the primary alarm level, the control box 5 transmits the alarm signal to the station control room to remind the staff in the station; if the primary liquid level detector 41 detects that the water level of the accumulated water in the pit reaches the pump-stop level, the control box issues a pump-stop command to stop the running primary drainage pump.

[0070] The secondary water collection device 3 of the present application is arranged on the roadbed pump station 1 and is located between the two sets of primary water collection devices 2. The secondary water collection pit 31 of the secondary water collection device 3 is connected to the primary water collection pit 22 through a connecting pipe and / or a connecting groove 33. The secondary water collection pit 31 is provided with at least two pump maintenance rooms 311 connected to the secondary water collection pit 31 in the longitudinal direction. Each pump maintenance room 311 is equipped with a secondary drainage pump 32 and a set of secondary liquid level detectors 42. The pump maintenance room 311 is provided with a secondary drainage pump 32 and a set of secondary liquid level detectors 42. 11 from bottom to top are also provided with secondary pump stop liquid levels and secondary pump start liquid levels which are the same in number as the secondary drainage pumps 32; when reaching the secondary pump start liquid level at the bottom, the secondary liquid level detector 42 sends a liquid level signal of the accumulated water in the pump maintenance room 311 to the control box 5, and the control box 5 receives the liquid level information and compares the actual liquid level information of the accumulated water in the pump maintenance room 311 with the pre-stored secondary pump start liquid level information, and determines whether the actual liquid level information is equal to or exceeds the secondary start liquid level at the bottom. The control box starts a secondary drainage pump 32 to discharge the water in the secondary sump 31 to the station wastewater pump room or the outdoor drainage network through the drainage pipe system 9; when the water level in the pump maintenance room 311 continues to rise and reaches the pump start level of the secondary lower layer, the secondary liquid level detector 42 sends a liquid level signal of the water in the pump maintenance room 311 to the control box again, and the control box 5 compares the actual liquid level information of the water in the pump maintenance room 311 with the pre-stored secondary pump start level. After comparing the information and judging that the actual liquid level information is equal to or exceeds the secondary pump start level information of the next lower layer, the control box starts two secondary drainage pumps 32 to run simultaneously, and discharges the accumulated water in the pit to the station wastewater pump room or the outdoor drainage network through the drainage pipe system 9, and so on; when the water level reaches the alarm level that is flush with the secondary pump start level of the uppermost layer, the control box transmits the alarm signal to the station vehicle control room; when it reaches the secondary pump stop level, the control box stops the running secondary drainage pump 32.

[0071] During the entire drainage process, the drainage capacity can be adjusted dynamically. In addition, the operation and maintenance personnel can usually flush and desilt the secondary sump 31 through the backwash system 6, thereby improving the construction convenience and maintenance convenience of the drainage pump station.

[0072] The above examples are for the purpose of illustrating the embodiments disclosed in the present application and should not be construed as limiting the present application. In addition, the various modifications listed herein and the variations of methods and compositions in the invention are obvious to those skilled in the art without departing from the scope and spirit of the present application. Although the present application has been specifically described in conjunction with various specific preferred embodiments of the present application, it should be understood that the present application should not be limited to these specific embodiments. In fact, various modifications obvious to those skilled in the art as described above to obtain inventions should be included within the scope of the present application.

Claims

1. A drainage pump station applied to a steel spring floating plate ballast, characterized in that: include: A ballast pump station (1), the ballast pump station (1) being arranged at the bottom of a tunnel structure (7), the extension direction of the tunnel structure (7) being defined as the longitudinal direction, and the two ends of the ballast pump station (1) being respectively connected to two steel spring floating plate ballasts (8) spaced apart in the longitudinal direction; A primary water collection device (2) is arranged on the ballast pump station (1) and is connected to a central drainage ditch (81) below the steel spring floating plate ballast (8), and is used to collect accumulated water discharged from the steel spring floating plate ballast (8) through the central drainage ditch (81) and to transport the collected accumulated water to a secondary water collection structure; A secondary water collection device (3) is arranged on the track bed pump station (1) and is connected to the primary water collection device (2) and the station main wastewater pump room or the outdoor pipe network, and is used to receive the accumulated water transported by the primary water collection device (2) and discharge the collected accumulated water to the station main wastewater pump room or the outdoor pipe network; A liquid level detection device (4), comprising a primary liquid level detector (41) for detecting the liquid level in the primary sump (21) and a secondary liquid level detector (42) for detecting the liquid level in the pump maintenance room (311); and / or A control box (5) is arranged on the track bed pump station (1) and is connected to the primary water collection device (2), the secondary water collection device (3), and the liquid level detection device (4), and is used to receive liquid level information sent by the liquid level detection device (4) and control the status of the primary water collection device (2) and the secondary water collection device (3).

2. A drainage pump station applied to a steel spring floating plate ballast according to claim 1, characterized in that: The primary water collection device (2) comprises a primary water collection pit (21) and at least one primary drainage pump (22). The primary water collection pit (21) is arranged at the end of the ballast pump station (1) close to the steel spring floating plate ballast (8) in the longitudinal direction. The primary water collection pit (21) is connected to the central drainage ditch (81) below the steel spring floating plate ballast (8), and the bottom of the primary water collection pit (21) is located at the shock-absorbing joint between the steel spring floating plate ballast (8) and the ballast base. The primary drainage pit (21) is provided with at least one set of the primary drainage pump (22), the water inlet of the primary drainage pump (22) is connected to the primary drainage pit (21), the water outlet of the primary drainage pump (22) is discharged to the secondary drainage pit (31) through the drainage pipeline system (9), the primary drainage pump (22) is connected to the control box (5), and the primary drainage pump (22) is controlled by the control box (5).

3. A drainage pump station applied to a steel spring floating plate ballast according to claim 2, characterized in that: The primary drainage pump (22) is a low-water-level submersible sewage pump, and its pump start liquid level is lower than the horizontal reference plane where the lowest point of the shock-absorbing gap between the steel spring floating plate ballast and the ballast base is located.

4. A drainage pump station applied to a steel spring floating plate ballast according to claim 2, characterized in that: The secondary water collection device (3) is located between two adjacent primary water collection devices (2), and comprises a secondary water collection pit (31) and a secondary drainage pump (32). The secondary water collection pit (31) is arranged on the track bed pump station (1) and is connected to the water outlet of the primary drainage pump (22) through a drainage pipeline system (9). The secondary water collection pit (31) is provided with a plurality of pump maintenance rooms (311) connected to the secondary water collection pit (31) in the longitudinal direction. A secondary drainage pump (32) is arranged in at least one of the pump maintenance rooms (311). The water inlet of the secondary drainage pump (32) is connected to the pump maintenance room (311). The water outlet of the secondary drainage pump (32) is connected to the main wastewater pump room of the station through the drainage pipeline system (9) or is directly discharged to the outside. The secondary drainage pump (32) is connected to the control box (5), and the secondary drainage pump (32) is controlled by the control box (5).

5. A drainage pump station applied to a steel spring floating plate ballast according to claim 4, characterized in that: The primary sump (21) and the pump maintenance room (311) penetrate the ballast pump station (1) and at least a portion of the tunnel structure (7) in the thickness direction of the ballast pump station (1).

6. A drainage pump station applied to a steel spring floating plate ballast according to claim 4, characterized in that: The drainage pipeline system (9) comprises a first water pump outlet pipe (91) connected one-to-one with the primary drainage pump (22), a first water lift pipe (92) connected one-to-one with the first water pump outlet pipe (91), a second water pump outlet pipe (93) connected one-to-one with the secondary drainage pump (32), a second water lift pipe (94) connected one-to-one with the second water pump outlet pipe (93), a main drainage pipe (95) connected to all the first water lift pipes (92) and the second water lift pipes (94), a main control valve (96) arranged on the main drainage pipe (95) and electrically connected to the control box (5), and / or a drainage valve assembly (97) arranged between the main control valve (96) and each of the first water pump outlet pipes (91) and the second water pump outlet pipes (93) and electrically connected to the control box (5).

7. A drainage pump station applied to a steel spring floating plate ballast according to claim 6, characterized in that: The first water pump outlet pipe (91) and the corresponding first water pump pipe (92), and the second water pump outlet pipe (93) and the corresponding second water pump pipe (94) are connected via a drainage valve assembly (97); the drainage valve assembly (97) comprises a reducer (971), a rubber flexible joint (972), a pressure gauge (973), a check valve (974), a gate valve (975) and / or a valve unit (976) connected in series in sequence; the reducer (971) is connected to the first water pump outlet pipe (91) or the second water pump outlet pipe (93), and the valve unit (976) is connected to the first water pump pipe (92) or the second water pump pipe (94).

8. The drainage pump station applied to the steel spring floating plate ballast according to claim 6, characterized in that: It also includes at least one backwashing system (6) for backwashing and desilting the secondary water collection device (3) and the secondary water collection device (3), wherein the backwashing system (6) includes a backwashing pipe (61) and a backwashing valve (62) connected to the backwashing pipe (61), wherein one end of the backwashing pipe (61) is connected to the main drainage pipe (95) and the other end is connected to the secondary water collection pit (31).

9. A drainage system, characterized in that: It comprises a drainage pump station applied to a steel spring floating plate ballast as described in any one of claims 1 to 8.

10. A drainage method, characterized in that: The drainage method is carried out by using the drainage pump station applied to the steel spring floating plate ballast according to any one of claims 1 to 8 or the drainage system according to claim 9, comprising the following steps: The primary liquid level detector (41) detects the liquid level in the primary sump (21) and sends the liquid level information to the control box (5) in real time; The control box (5) receives the liquid level information of the accumulated water in the primary sump (21) sent by the primary liquid level detector (41), generates a pump start instruction and / or a pump stop instruction according to the liquid level information of the accumulated water in the primary sump (21), and stores the pump start instruction and / or the pump stop instruction in an internal address of the control box (5); the pump start instruction is used to instruct one or more primary drainage pumps (22) to start when the actual liquid level of the accumulated water in the primary sump (21) is equal to or higher than the pump start liquid level; the pump stop instruction is used to instruct one or more primary drainage pumps (22) to stop when the actual liquid level of the accumulated water in the primary sump (21) is equal to or lower than the pump stop liquid level; The primary drainage pump (22) operates according to the received primary pump start instruction and / or primary pump stop instruction; if it is a primary pump start instruction, one or more primary drainage pumps (22) receiving the primary pump start instruction operate to pump the accumulated water in the primary sump (21) to the secondary sump (31), and the accumulated water in the secondary sump (31) flows into each pump maintenance room (311); if it is a primary pump stop instruction, one or more primary drainage pumps (22) receiving the primary pump stop instruction stop operating; The secondary liquid level detector (42) detects the liquid level height in the pump maintenance room (311) and sends the liquid level information to the control box (5) in real time; The control box (5) receives the liquid level information of the accumulated water in the pump maintenance room (311) sent by the secondary liquid level detector (42), generates a secondary pump start instruction and / or a secondary pump stop instruction according to the liquid level information of the accumulated water in each pump maintenance room (311), and stores the secondary pump start instruction and / or the secondary pump stop instruction in an internal address of the control box (5); the secondary pump start instruction is used to instruct one or more secondary drainage pumps (32) to start; the secondary pump stop instruction is used to instruct one or more secondary drainage pumps (32) to stop; The secondary drainage pump (32) operates according to the received secondary pump start instruction and / or secondary pump stop instruction; if it is a secondary pump start instruction, one or more secondary drainage pumps (32) receiving the secondary pump start instruction operate to pump the accumulated water in the secondary water collection device (3) to the station main wastewater pump room or the outdoor pipe network; if it is a secondary pump stop instruction, one or more primary drainage pumps (22) receiving the secondary pump stop instruction stop operating; The control box (5) controls the backwash system (6) and the secondary drainage pump (32) to perform backwashing and desilting operations on the secondary sump (31).

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