Intelligent drainage system of construction site foundation pit

Abstract

The utility model discloses an intelligent drainage system for a construction site foundation pit. The drainage system comprises a water collecting pit, a submersible pump, a water collecting ditch, a drainage pipe, a liquid level sensor, a water pump control box, a PLC control cabinet and a monitoring center server. A square water collecting pit is dug in foundation pit soil, a confluence water collecting ditch is arranged on the periphery of the water collecting pit, at least two submersible pumps are arranged in the water collecting pit, the first submersible pump and the second submersible pump are connected with a first pump water drainage pipe and a second pump water drainage pipe respectively, and an electric valve is arranged on a main water drainage pipe. A liquid level sensor is installed in the water collecting pit, is responsible for monitoring the lowest water level and the highest water level and is connected with a water pump control box; the water pump control box is connected with the PLC control cabinet, and then the PLC control cabinet is connected with the monitoring center server so as to achieve communication transmission. The system is simple in structure, reliable in operation, capable of automatically alarming water level and automatically draining water, labor-saving and capable of improving water draining efficiency.

Description

Technical Field

[0001] The utility model relates to an intelligent drainage system for a foundation pit in a construction site, belonging to the field of machinery. Background Art

[0002] Open drainage is commonly used in construction site foundation pit drainage. Water collection and drainage facilities are set up in low-lying areas to drain surface water, but the drainage efficiency is low and the drainage response time is long. Personnel are required to patrol around the clock, and the drainage response time is long, the efficiency is low, and the energy consumption is high. At present, the self-controlled drainage equipment does not have the ability to process data and make advance predictions, and cannot achieve the goals of intelligent control, integrated management and energy saving. Utility Model Content

[0003] In order to solve technical problems such as the need for personnel to conduct daily fixed-point inspections in traditional drainage systems, the need for manual operation to start and close submersible pumps, and the inability to timely detect water accumulation in sump pits, the utility model provides an intelligent drainage system for foundation pits at construction sites.

[0004] The innovative features of the utility model are as follows: (1) the water level can be monitored and alarmed in real time, and the pump can be automatically turned on for drainage; (2) one pump is used as a backup in normal times, and two pumps can drain water at the same time during heavy rain; (3) it is based on a variety of Internet communication technologies such as 4G, wifi, and Ethernet.

[0005] The technical solution adopted by the utility model is:

[0006] An intelligent drainage system for foundation pits at construction sites includes a sump, a submersible pump, a sump, a drainage pipe, a liquid level sensor, a pump control box, a PLC control cabinet, and a monitoring center server. A confluence sump is arranged around the sump, and at least two submersible pumps are arranged in the sump. The submersible pumps are installed on a pump base 40 cm above the bottom of the sump and are connected to the drainage pipe; a liquid level sensor is installed on the inner wall of the sump to monitor the minimum and maximum water levels, and the liquid level sensor is connected to the pump control box; the two submersible pumps are one for use and one for backup. When the water level is at the lowest water level, the two submersible pumps are shut down at the same time. Under normal circumstances, one submersible pump works. When the water level reaches the highest water level, the backup submersible pump starts to drain water, and this pump is usually in backup. The pump control box is connected to the PLC control cabinet, and the PLC control cabinet is connected to the monitoring center server to realize communication transmission.

[0007] The PLC control cabinet is equipped with a PLC controller, a memory, an input-output module, a communication module and a liquid level meter. The input-output module collects data from the liquid level sensor and feeds the data back to the PLC controller, and then the PLC controller sends a signal to the communication module to control the water level; the memory can record the water level information in the sump in real time. When the water level exceeds the warning water level, the PLC controller receives the alarm information from the input-output module and pops up a warning message on the touch screen of the PLC control cabinet. At this time, the 1# submersible pump starts to drain automatically. When the water volume in the sump drops to a safe water level, the alarm information is released and the drainage is completed. When it rains heavily, the 1# submersible pump and the 2# submersible pump start to drain at the same time.

[0008] The intelligent drainage system for foundation pits in construction sites provided by the utility model brings the following beneficial effects:

[0009] (1) The structure of the utility model is different from the traditional method. The submersible pumps are used as a backup and the system operates safely and reliably.

[0010] (2) The liquid level sensor monitors the water level, and the system automatically controls the pump on and off;

[0011] (3) Implement automatic water level alarm and automatic drainage to save manpower and improve drainage efficiency.

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] In the figure: 1- foundation pit soil, 2- sump, 3- liquid level sensor, 4- 1# submersible pump, 5- 2# submersible pump, 6- 1# pump base, 7- 2# pump base, 8- 1# pump drain pipe, 9- 2# pump drain pipe, 10- electric valve, 11- sump, 12- pump control box, 13- PLC control cabinet, 14- monitoring center server. DETAILED DESCRIPTION

[0015] Example

[0016] like Figure 1As shown, an intelligent drainage system for foundation pits at construction sites includes a sump, a submersible pump, a sump ditch, a drainage pipe, a liquid level sensor, a pump control box, a PLC control cabinet and a monitoring center server; a square sump 2 is dug in the foundation pit soil 1, and a confluence sump 11 is arranged around the sump 2. At least two submersible pumps, namely, a 1# submersible pump 4 and a 2# submersible pump 5, are arranged in the sump 2. The two submersible pumps are respectively installed on pump bases with a height of 40 cm from the bottom of the sump, and the 1# submersible pump 4 and the 2# submersible pump 5 are respectively connected to the 1# pump drainage pipe 8 and the 2# pump drainage pipe 9, and an electric valve 10 is arranged on the drainage main pipe; a liquid level sensor 3 is installed in the sump 2 to monitor the minimum and maximum water levels, and the liquid level sensor is connected to the pump control box 12; the two submersible pumps are used as one for use and one for standby. When the water level is at the lowest water level, the two submersible pumps are closed at the same time. As the water level rises, one submersible pump starts to work. When the water level reaches the highest water level, the standby submersible pump starts to drain water, and this pump is usually on standby. The water pump control box 12 is connected to the PLC control cabinet 13, and the PLC control cabinet 13 is connected to the monitoring center server 14 to realize communication transmission.

[0017] Figure 1 This is a schematic diagram of an intelligent drainage system for a foundation pit of a construction site according to an embodiment of the utility model. In this system, accumulated water in the foundation pit flows into a sump 2 through a sump 11 (a sump is an open ditch dug on the surface of the soil layer). A liquid level sensor 3 in the sump 2 detects the water level. When the liquid level sensor 3 detects that the water level in the sump 2 reaches a warning level, the liquid level sensor 3 sends a warning message to a water pump control box 12.

[0018] The water pump control box 12 is connected to the 1# submersible pump 4 set in the sump 2. After the 1# submersible pump 4 is turned on, the 1# submersible pump 4 discharges the water in the sump 2 through the 1# pump drain pipe 8. The water pump control box 12 is also connected to the PLC control cabinet 13. The PLC control cabinet 13 is equipped with a PLC controller, a memory, an input and output module, a communication module and a liquid level meter. The input and output module collects data from the liquid level sensor 3 and feeds the data back to the PLC controller, and then the PLC controller sends a signal to the communication module to control the water level; the memory can record the water level information in the sump 2 in real time. When it is found that the water level exceeds the warning water level, the PLC controller receives the alarm information of the input and output module, and pops up a warning message on the touch screen of the PLC control cabinet 13. At this time, the 1# submersible pump 4 starts to drain automatically. When the water volume in the sump 2 drops to a safe water level, the alarm information is released and the drainage is completed. When it rains heavily, the 1# submersible pump 4 and the 2# submersible pump 5 start to drain at the same time.

[0019] The PLC control cabinet 13 is now connected to the monitoring center server 14 through various Internet communication technologies such as 4G, wifi or Ethernet. The monitoring center server 14 can remotely control the water pump to drain water. The on-duty personnel at the monitoring center can deal with the water accumulation in the sump 2 at any time, discover signs of water accumulation as early as possible, and achieve the effect of preventing abnormalities and accidents.

[0020] Compared with the traditional method, the control system of the utility model has the advantages of being stable and intelligent, saving manpower, having strong functions, fast response, and being reusable and can be installed and utilized repeatedly.

Claims

1. An intelligent drainage system for foundation pits at construction sites, characterized in that: It includes a sump, a submersible pump, a sump, a drainage pipe, a liquid level sensor, a water pump control box, a PLC control cabinet and a monitoring center server; a square sump is dug in the foundation pit soil, and a confluence sump is set around the sump. At least two submersible pumps are installed in the sump, and the 1# submersible pump and the 2# submersible pump are connected to the 1# pump drainage pipe and the 2# pump drainage pipe respectively, and an electric valve is provided on the drainage main pipe; a liquid level sensor is installed in the sump for minimum and maximum water level monitoring, and the liquid level sensor is connected to the water pump control box; the water pump control box is connected to the PLC control cabinet, and the PLC control cabinet is connected to the monitoring center server to realize communication transmission.

2. The intelligent drainage system for foundation pits at construction sites according to claim 1, characterized in that: Two submersible pumps are installed on pump bases at a height of 40 cm from the bottom of the sump.

3. The intelligent drainage system for foundation pits at construction sites according to claim 1, characterized in that: There are two submersible pumps, one for use and one for backup. When the water level is at the lowest level, the two submersible pumps are shut down at the same time. When the water level reaches the highest level, the backup submersible pump starts to drain.

4. The intelligent drainage system for foundation pits at construction sites according to claim 1, characterized in that: The PLC control cabinet is equipped with a PLC controller, a memory, an input-output module, and a communication module. The input-output module collects data from the liquid level sensor and feeds the data back to the PLC controller, and then the PLC controller sends a signal to the communication module to control the water level; the memory can record the water level information in the sump in real time. When it is found that the water level exceeds the warning water level, the PLC controller receives the alarm information from the input-output module and feeds it back to the touch screen, and a warning message pops up on the touch screen. When the water volume in the sump drops to a safe water level, the alarm information is lifted and the drainage is completed; when it rains heavily, the 1# submersible pump and the 2# submersible pump start drainage at the same time.

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