CN113832980A - Integrated pump station type intelligent foundation pit drainage system - Google Patents

Integrated pump station type intelligent foundation pit drainage system Download PDF

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CN113832980A
CN113832980A CN202111312371.XA CN202111312371A CN113832980A CN 113832980 A CN113832980 A CN 113832980A CN 202111312371 A CN202111312371 A CN 202111312371A CN 113832980 A CN113832980 A CN 113832980A
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water
main pump
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CN113832980B (en
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王奇
姚盛清
高增孝
张艳芳
孙梓尧
项龙康
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Zhongsheng Construction Machinery Nanjing Heavy Industry Co Ltd
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/02—Foundation pits
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00—Keeping dry foundation sites or other areas in the ground
    • E02D19/06—Restraining of underground water
    • E02D19/10—Restraining of underground water by lowering level of ground water
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00—Keeping dry foundation sites or other areas in the ground
    • E02D19/06—Restraining of underground water
    • E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
    • E02D19/20—Restraining of underground water by damming or interrupting the passage of underground water by displacing the water, e.g. by compressed air
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
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    • E03F5/00—Sewerage structures
    • E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/22—Adaptations of pumping plants for lifting sewage
    • G—PHYSICS
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/10—Miscellaneous comprising sensor means

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Abstract

The invention discloses an integrated pump station type intelligent foundation pit drainage system, and belongs to the technical field of intelligent drainage. The invention comprises an integrated pump station which is arranged in a water collecting well at the bottom of a foundation pit, the integrated pump station comprises a frame component, a water suction chamber, a working chamber, a main pump, an auxiliary pump and a pipeline component, a water suction chamber and a working chamber are sequentially arranged in the frame component from bottom to top, a main pump and an auxiliary pump are arranged in the working chamber, the pipeline assembly is used for respectively connecting the main pump and the auxiliary pump with the drainage pipeline, the integrated pump station type intelligent foundation pit drainage system has the capabilities of automatic induction, automatic analysis and autonomous control, and unmanned management is realized.

Description

Integrated pump station type intelligent foundation pit drainage system
Technical Field
The invention relates to the technical field of intelligent drainage, in particular to an integrated pump station type intelligent foundation pit drainage system.
Background
In order to ensure that the foundation pit is constructed in a drier environment, the current foundation pit drainage generally adopts a clear drainage method, and a water collecting and draining facility is arranged in a low-lying area to drain away surface accumulated water, but the drainage efficiency is low and the drainage reaction time is long.
When current drainage system is draining water to the foundation ditch, adopt the main pump to continue work usually, the mode of auxiliary pump cooperation work is with ponding discharge foundation ditch, the long-time work of main pump will lead to energy consumption efficiency to reduce, the life and the security performance of main pump have been reduced, current water pump needs artifical all-weather guard when the drainage, and the drainage reaction time is long, and is inefficient, the power consumption is big, and whether the water pump only judges work through the ponding hydraulic pressure value in the foundation ditch, and inside hard material of foundation ditch can be along with rivers entering equipment inside, lead to the inside trouble that breaks down of equipment, the fault rate of equipment has been increased, and current stage self-control formula drainage equipment does not possess data processing and earlier prejudgement ability, can't realize intelligent control, integrated management and energy-conserving target.
Disclosure of Invention
The invention aims to provide an integrated pump station type intelligent foundation pit drainage system to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: the integrated pump station comprises an integrated pump station, wherein the integrated pump station is placed in a water collecting well at the bottom of a foundation pit, the integrated pump station comprises a frame assembly, a water suction chamber, a working chamber, a main pump, an auxiliary pump and a pipeline assembly, the frame assembly is internally provided with the water suction chamber and the working chamber from bottom to top in sequence, the main pump and the auxiliary pump are placed in the working chamber, the pipeline assembly is used for connecting the main pump and the auxiliary pump with a drainage pipeline respectively, the integrated pump station is used for discharging accumulated water in the foundation pit out of the foundation pit through the drainage pipeline, the frame assembly is used for installing the main pump and the auxiliary pump and blocking floating materials on the lower part of the water collecting well and floating materials on the upper part of the water collecting well to prevent the accumulated water from entering the integrated pump station to damage equipment, the water suction chamber is used for containing the filtered accumulated water, the working chamber is used for treating the filtered accumulated water, and the main pump is used for matching with the auxiliary pump to discharge the filtered accumulated water out of the foundation pit through the pipeline assembly and the drainage pipeline, the pipeline assembly is used for discharging accumulated water after the main pump and the auxiliary pump are treated out of the foundation pit through a drainage pipeline.
Further, the pipeline assembly includes the check valve, takes over and the header three-way valve, main pump and auxiliary pump are connected with the takeover through the check valve respectively, two take over the other end respectively with the header three-way valve connection, the third end of header three-way valve is connected with water drainage pipeline through the switching pipe, and the check valve is used for avoiding discharging to taking over inside ponding from main pump or auxiliary pump and takes place the backward flow, takes over and is used for connecting check valve and header three-way valve, and the header three-way valve is used for passing through water drainage pipeline discharge foundation ditch with main pump or auxiliary pump exhaust ponding, and the switching pipe is used for connecting header three-way valve and water drainage pipeline.
Further, the frame subassembly includes frame, plane baffle and filter screen baffle, the inside bottom of frame is provided with the plane baffle, the frame all is provided with the filter screen baffle all around with the top, the inside water pump that is provided with of frame holds the platform, the water pump holds the platform and separates the frame subassembly for absorbing water room and studio, the water pump holds the bench and is provided with main pump and subpump, and the frame is used for installing plane baffle and filter screen baffle, and inside the plane baffle was used for avoiding the stereoplasm foreign matter of sump pit bottom to get into the frame, the filter screen baffle was used for avoiding the floater on sump pit upper portion to get into inside the frame.
Further, the inner chamber edge excavation of foundation ditch has the side ditch, the inner chamber bottom excavation of foundation ditch has a plurality of branch ditches, side ditch and branch ditch handing-over department are provided with the sump pit, and the side ditch is used for cooperating a branch ditch to introduce the sump pit with the ponding in the foundation ditch, and the sump pit is used for placing the integration pump station.
Furthermore, the drainage system also comprises a data acquisition unit, a power cable, a terminal processor, a power transmission cable and a data transmission cable, wherein the data acquisition unit is fixedly arranged on the outer side wall of the integrated pump station and is used for acquiring accumulated water hydraulic pressure and accumulated water volume weight in the water collecting well and state information of the main pump and the auxiliary pump, one end of the data transmission cable is connected with the data acquisition unit, one end of the power transmission cable is connected with the integrated pump station, the other ends of the data transmission cable and the power transmission cable are connected with the terminal processor, the input end of the terminal processor is connected with the power cable, the terminal processor is used for receiving and making corresponding reaction on data acquired by the data acquisition unit and signals transmitted by the power cable and controlling the states of the main pump and the auxiliary pump through the power transmission cable, the terminal processor is placed at any position far away from the foundation pit, the power cable is used for being connected with a power switch in the terminal processor, the working state of the terminal processor is controlled, the power transmission cable is used for connecting the main pump and the auxiliary pump with a contactor inside the terminal processor, the working states of the main pump and the auxiliary pump are controlled, and the data transmission cable is used for connecting the data acquisition unit and the terminal processor and transmitting acquired data.
Furthermore, the terminal processor comprises a single chip microcomputer processing system, a water pump state detection unit, an underwater pressure detection unit, a water body volume weight detection unit, a water pump contactor control unit, a model parameter input unit and an abnormal state alarm device, wherein the single chip microcomputer processing system is respectively electrically connected with the water pump state detection unit, the underwater pressure detection unit, the water body volume weight detection unit, the water pump contactor control unit, the model parameter input unit and the abnormal state alarm device, so that the single chip microcomputer processing system can conveniently control the water pump state detection unit, the underwater pressure detection unit, the water body volume weight detection unit, the water pump contactor control unit, the model parameter input unit and the abnormal state alarm device;
further, the single chip microcomputer processing system is used for controlling the working state of the water pump according to the accumulated water hydraulic pressure, the accumulated water volume weight and set parameters;
the water pump state detection unit is used for detecting the working states of the main pump and the auxiliary pump;
the underwater pressure detection unit is used for detecting the accumulated water hydraulic pressure of the position of the integrated pump station at each time point;
the water volume weight detection unit is used for detecting the volume weight of water accumulated at the position of the integrated pump station at each time point;
the water pump contactor control unit is used for controlling the states of the main pump and the auxiliary pump;
the model parameter input unit is used for inputting start-stop limit parameters of the main pump and the auxiliary pump;
and the abnormal state alarm device is used for giving an alarm when the main pump and the auxiliary pump work abnormally.
Further, the limit parameters input by the model parameter input unit comprise a main pump starting highest water level Hmmax, a main pump stopping lowest water level Hmmin, a main pump emergency starting liquid level difference Qm, a main pump emergency flow rate Qm1, an auxiliary pump starting highest water level Hamax, an auxiliary pump stopping lowest water level Hamin, an auxiliary pump emergency starting liquid level difference Qa and an auxiliary pump emergency flow rate Qa 1;
the system comprises a main pump, a water collecting well, a water pump, a water level control system and a construction scheme, wherein Hmmax is the safe water level plus n% of the difference value between the control water level and the safe water level, Hmmin is the stop water level of the main pump, the stop water level of the main pump is determined by the safe water level given by equipment, Hamax is the safe water level plus m% of the difference value between the control water level and the safe water level, Hamin is the stop water level of the auxiliary pump, the stop water level of the auxiliary pump is determined by the safe water level given by the equipment, n% and m% are determined by the diameter of the water collecting well and the minimum start-stop interval time of the water pump, and the control water level is 0.5-1m below the construction surface of a foundation pit.
Further, the depth H1 of the bottom of a foundation pit where the input water pump is located is set, the depth of a water collecting well is set to be H1, the radius of the water collecting well is set to be r, the water level drop depth delta H in unit working time delta t of the monitoring water pump is monitored, the water pressure monitored in real time is pi, the density is set to be m, the height of the safe water level of the water pump is set to be H0, the actual lift is H1+ H1-pi/(mg), the flow rate is 3.14 r2 delta H/delta t, the emergency flow rate Qm1 of the main pump and the emergency flow rate Qa1 of the auxiliary pump can be obtained by taking a quadratic equation provided by MaheshTalwar as a and combining the parameters, and the specific calculation step of the flow rate Q is as follows:
the method comprises the following steps: let the quadratic equation be H ═ H0+bQ+cQ2；
Wherein H is the lift, Q is the capacity, H0When Q is 0, the head is closed, and b and c are constant parameters;
step two: determining a water pump flow-lift characteristic curve function based on a least square method;
step 1: is provided with m pairs of observed values (H)i,Qi) Let H0＝H’0+dH0、b＝b’+db、c＝c’+dc；
Wherein, i is 1,2, …, m, H0B and c are undetermined parameters, H'0B ', c' are approximate values thereof;
step 2: with Q and H as independent and dependent variables, respectively, the error equation is listed without considering the observed value error as:
Figure BDA0003342136500000041
step 3: the error equation matrix is obtained according to the error equation listed in Step2 as follows:
AdX＝l+V；
wherein the content of the first and second substances,
Figure BDA0003342136500000042
step 4: when the least square method is adopted to determine the water pump flow-lift characteristic curve function, the error existing in the matrix A and the observed value vector l is not considered, and the criterion is as follows:
Figure BDA0003342136500000043
step 5: the least squares solution is obtained from Step3 and Step4 as:
Figure BDA0003342136500000044
step 6: according to the least square solution found
Figure BDA0003342136500000047
And
Figure BDA0003342136500000045
find parameter H0、b、c；
Step 7: and obtaining the error in the unit weight according to the residual matrix V which is AdX-l as follows:
Figure BDA0003342136500000046
step three: the parameter H obtained in the second step0B and c are substituted into a quadratic equation, and the quadratic equation H is obtained by solving0+bQ+cQ2And root-seeking formula
Figure BDA0003342136500000051
The lift is H + H1-H0 and the flow is Q when the safe water level height is reached.
Further, the underwater pressure detection unit is a pressure sensor, the water volume weight detection unit is a density sensor, the pressure sensor is used for detecting the hydraulic pressure of the accumulated water in the water collecting well, and the density sensor is used for detecting the volume weight of the accumulated water in the water collecting well.
Further, the specific processing steps of the single chip microcomputer processing system are as follows:
(1): the single chip microcomputer processing system receives the accumulated water hydraulic pressure and the accumulated water volume weight at the current time point detected by the underwater pressure detection unit and the water volume weight detection unit, and simultaneously calls the accumulated water hydraulic pressure, the accumulated water volume weight and the model parameters at the previous time point;
(2): judging whether the maximum starting liquid level of the main pump is reached or not according to the accumulated water hydraulic pressure and the accumulated water volume weight at the current time point, if so, finishing the work after the main pump is started, if not, judging whether the emergency starting liquid level difference of the main pump is reached or not according to the liquid level difference value between the current time point and the previous time point, if so, finishing the work after the main pump is started, and if not, finishing the work;
(3): when the main pump works, whether the auxiliary pump works is judged according to the water pump state detection unit;
(4): if the auxiliary pump does not work, judging whether the highest starting liquid level of the auxiliary pump is reached according to the accumulated water hydraulic pressure and the accumulated water volume weight at the current time point, if so, finishing the work after the auxiliary pump is started, if not, finishing the work after the auxiliary pump is started according to whether the hydraulic pressure difference value between the current time point and the previous time point reaches the emergency starting liquid level difference of the auxiliary pump, otherwise, finishing the work after the main pump is stopped according to whether the liquid level at the current time point reaches the lowest stopping liquid level of the main pump, and if not, finishing the work;
(5): and if the auxiliary pump works, judging whether the liquid level reaches the lowest stopping water level of the auxiliary pump according to the accumulated water hydraulic pressure and the accumulated water volume weight at the current time point, stopping the auxiliary pump when the liquid level reaches the lowest stopping water level, and ending the work when the liquid level does not reach the lowest stopping water level.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the corresponding water level is set through the model parameter input unit, the accumulated water hydraulic pressure and the accumulated water volume weight are detected in real time by the underwater pressure detection unit and the water volume weight detection unit, and the main pump and the auxiliary pump are controlled by the terminal processor according to the detected data, so that the main pump works indirectly and the auxiliary pump works in a matched manner, the water pump is prevented from being in a working state for a long time, the energy consumption efficiency is further improved, the safe use of the water pump is improved, and the service life of the water pump is prolonged.
2. According to the invention, through adding the data acquisition unit, the power cable, the terminal processor, the power transmission cable and the data transmission cable, the data acquisition unit transmits acquired data to the terminal processor through the data transmission cable, the terminal processor automatically analyzes the water level in the foundation pit, and controls the main pump and the auxiliary pump through the power transmission cable according to the analysis result, so that unmanned management is realized.
3. According to the invention, the frame assembly is arranged, and the plane partition plate and the filter screen partition plate in the frame assembly respectively block hard foreign matters at the bottom of the water collecting well and floating matters at the upper part of the water collecting well outside the frame assembly, so that the complex working condition environment of a construction site is overcome, the smooth water inlet is ensured, and the failure rate of equipment is further reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of a foundation pit structure of an integrated pump station type intelligent foundation pit drainage system of the present invention;
FIG. 2 is a schematic view of a main sectional view of an integrated pump station of the integrated pump station type intelligent foundation pit drainage system of the present invention;
FIG. 3 is a schematic sectional view of an integrated pump station of the integrated pump station type intelligent foundation pit drainage system of the present invention;
FIG. 4 is a schematic view of the overall working structure of the integrated pump station type intelligent foundation pit drainage system of the present invention;
FIG. 5 is a schematic structural diagram of a frame assembly of the integrated pump station type intelligent foundation pit drainage system of the present invention;
FIG. 6 is a schematic diagram of a model parameter setting reference for the integrated pump station type intelligent foundation pit drainage system of the present invention;
FIG. 7 is a schematic structural diagram of a pipeline assembly of the integrated pump station type intelligent foundation pit drainage system of the present invention;
FIG. 8 is a schematic view of the interior of a terminal processor of the integrated pump station type intelligent foundation pit drainage system of the present invention;
FIG. 9 is a flow chart of the single-chip processor processing system of the integrated pump station type intelligent foundation pit drainage system of the present invention.
In the figure: 1. a drain line; 2. a transfer tube; 3. a water collecting well; 4. a foundation pit; 41. side ditches; 42. branch ditches; 5. an integrated pump station; 51. a frame assembly; 511. a frame; 512. a planar spacer; 513. a screen separator; 514. a water pump receiving platform; 52. a water suction chamber; 53. a working chamber; 54. a main pump; 55. a secondary pump; 56. a conduit assembly; 561. a check valve; 562. taking over a pipe; 563. a header three-way valve; 6. a data acquisition unit; 7. a power cable; 8. a terminal processor; 9. a power transmission cable; 10. a data transmission cable.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, the present invention provides the following technical solutions: the integrated pump station 5 is placed in a water collecting well 3 at the bottom of a foundation pit 4, the integrated pump station 5 is used for discharging accumulated water in the foundation pit 4 out of the foundation pit 4 through a drainage pipeline 1, the integrated pump station 5 comprises a frame component 51, a water suction chamber 52, a working chamber 53, a main pump 54, an auxiliary pump 55 and a pipeline component 56, the frame component 51 is used for installing the main pump 54 and the auxiliary pump 55, hard foreign matters at the lower part of the water collecting well 3 and floating matters at the upper part of the water collecting well 3 are blocked to prevent the floating matters from entering the integrated pump station 5 to damage equipment, the water suction chamber 52 and the working chamber 53 are sequentially arranged in the frame component 51 from bottom to top, the water suction chamber 52 is used for containing the accumulated water filtered by a filter screen partition 513, the working chamber 53 is used for treating the filtered accumulated water, the main pump 54 and the auxiliary pump 55 are placed in the working chamber 53, the main pump 54 is used for matching with the auxiliary pump 55 to discharge the filtered accumulated water out of the foundation pit 4 through the pipeline component 56 and the drainage pipeline 1, a pipe assembly 56 connects the main pump 54 and the sub pump 55 with the drainage line 1, respectively, the pipe assembly 56 is used for draining the accumulated water treated by the main pump 54 and the sub pump 55 out of the foundation pit 4 through the drainage line 1, the pipe assembly 56 comprises a check valve 561, the connecting pipe 562 and the header three-way valve 563 are connected, the main pump 54 and the auxiliary pump 55 are connected with the connecting pipe 562 through a check valve 561 respectively, the check valve 561 is used for avoiding that accumulated water discharged from the main pump 54 and the auxiliary pump 55 to the inside of the connecting pipe 562 flows back, the connecting pipe 562 is used for connecting the header three-way valve 563, accumulated water in the connecting pipe 562 is discharged out of the foundation pit 4 through the header three-way valve 563 and the drainage pipeline 1, the other ends of the two connecting pipes 562 are connected with the header three-way valve 563 respectively, the third end of the header three-way valve 563 is connected with the drainage pipeline 1 through a switching pipe 2, the header three-way valve 563 is used for discharging accumulated water discharged from the main pump 54 or the auxiliary pump 55 out of the foundation pit 4 through the drainage pipeline 1, and the switching pipe 2 is used for connecting the header three-way valve 563 with the drainage pipeline 1.
The frame assembly 51 comprises a frame 511, a plane clapboard 512 and a filter screen clapboard 513, wherein the frame 511 is used for installing the plane clapboard 512 and the filter screen clapboard 513, the plane clapboard 512 is arranged at the bottom end inside the frame 511, the plane clapboard 512 is used for preventing hard foreign matters at the bottom of the water collecting well 3 from entering the frame 511, the filter screen clapboard 513 is arranged at the periphery and the top end of the frame 511, the filter screen clapboard 513 is used for preventing floating matters on the upper part of the water collecting well 3 from entering the frame 511, a water pump bearing table 514 is arranged inside the frame 511, the frame assembly 51 is divided into a water suction chamber 52 and a working chamber 53 by the water pump bearing table 514, a main pump 54 and an auxiliary pump 55 are arranged on the water pump bearing table 514, the water pump bearing table 514 is used for carrying out regional division on the water suction chamber 52 and the working chamber 53, and the main pump 54 and the auxiliary pump 55 are supported.
The edge of the inner cavity of the foundation pit 4 is excavated to form a side ditch 41, the bottom of the inner cavity of the foundation pit 4 is excavated to form a plurality of branch ditches 42, the joint of the side ditch 41 and the branch ditches 42 is provided with a water collecting well 3, the side ditch 41 is used for being matched with the branch ditches 42 to introduce accumulated water in the foundation pit 4 into the water collecting well 3, and the water collecting well 3 is used for placing an integrated pump station 5.
The drainage system also comprises a data acquisition unit 6, a power cable 7, a terminal processor 8, a power transmission cable 9 and a data transmission cable 10, wherein the data acquisition unit 6 is fixedly installed on the outer side wall of the integrated pump station 5, the data acquisition unit 6 is used for acquiring accumulated water hydraulic pressure and accumulated water volume weight in the water collecting well 3 and state information of the main pump 54 and the auxiliary pump 55, one end of the data transmission cable 10 is connected with the data acquisition unit 6, one end of the power transmission cable 9 is connected with the integrated pump station 5, the other ends of the data transmission cable 10 and the power transmission cable 9 are connected with the terminal processor 8, the data transmission cable 10 is used for connecting the data acquisition unit 6 and the terminal processor 8 and transmitting the acquired data, the power transmission cable 9 is used for connecting the main pump 54 and the auxiliary pump 55 with a contactor inside the terminal processor 8 and controlling the working state of the main pump 54 and the auxiliary pump 55, terminal processor 8's input is connected with power cable 7, power cable 7 is used for being connected with the switch in terminal processor 8, operating condition to terminal processor 8 controls, terminal processor 8 is used for receiving and making corresponding reaction to the data that data acquisition unit 6 gathered and the signal of power cable 7 transmission, and control main pump 54 and auxiliary pump 55's state through power transmission cable 9, terminal processor 8 places in the optional position of keeping away from foundation ditch 4, avoid ponding in the foundation ditch 4 to cause the damage to terminal processor 8.
The terminal processor 8 comprises a single chip microcomputer processing system, a water pump state detection unit, an underwater pressure detection unit, a water volume weight detection unit, a water pump contactor control unit, a model parameter input unit and an abnormal state alarm device, wherein the single chip microcomputer processing system is respectively electrically connected with the water pump state detection unit, the underwater pressure detection unit, the water volume weight detection unit, the water pump contactor control unit, the model parameter input unit and the abnormal state alarm device, and the single chip microcomputer processing system is convenient to control the water pump state detection unit, the underwater pressure detection unit, the water volume weight detection unit, the water pump contactor control unit, the model parameter input unit and the abnormal state alarm device by adopting electrical connection;
the single chip microcomputer processing system is used for controlling the working state of the water pump according to the accumulated water hydraulic pressure, the accumulated water volume weight and set parameters;
the water pump state detection unit is used for detecting the working states of the main pump 54 and the auxiliary pump 55;
the underwater pressure detection unit is a pressure sensor and is used for detecting the hydraulic pressure of the accumulated water at the position of the integrated pump station 5 at each time point in the water collecting well 3;
the water volume weight detection unit is a density sensor and is used for detecting the volume weight of water accumulated at the position of the integrated pump station 5 at each time point in the water collecting well 3, wherein the water volume weight refers to the weight of the water accumulated in unit volume;
the water pump contactor control unit is used for controlling the states of the main pump 54 and the auxiliary pump 55;
the model parameter input unit is used for inputting limit parameters of starting and stopping the main pump 54 and the auxiliary pump 55, and the limit parameters input by the model parameter input unit comprise a main pump 54 starting highest water level Hmmax, a main pump 54 stopping lowest water level Hmmin, a main pump 54 emergency starting liquid level difference Qm, a main pump 54 emergency flow rate Qm1, an auxiliary pump 55 starting highest water level Hamax, an auxiliary pump 55 stopping lowest water level Hamin, an auxiliary pump 55 emergency starting liquid level difference Qa and an auxiliary pump 55 emergency flow rate Qa 1;
hmmax is the safe water level plus n% of the difference value between the control water level and the safe water level, Hmmin is the stop water level of the main pump 54, and is determined by the safe water level given by equipment, Hamax is the safe water level plus m% of the difference value between the control water level and the safe water level, Hamin is the stop water level of the auxiliary pump 55, and is determined by the safe water level given by equipment, n% and m% are determined by the diameter of the water collecting well 3 and the minimum start-stop interval time of the water pump, and the control water level is 0.5-1m below the construction surface of the foundation pit 4, and is specifically determined by a construction scheme;
the abnormal state warning device is used to give an alarm when the main pump 54 and the sub pump 55 are abnormally operated.
The implementation method comprises the following steps: the method is characterized in that the depth H1 of the bottom of a foundation pit 4 where an input water pump is located is set, the depth of a water collecting well 3 is set to be H1, the radius of the water collecting well 3 is set to be r, the water level drop depth delta H in unit working time delta t of the monitoring water pump is set to be pi, the real-time monitoring water pressure is pi, the density is set to be m, the safe water level height of the water pump is set to be H0, the actual lift is H1+ H1-pi/(mg), the flow rate is 3.14 r2 delta H/delta t, the emergency flow rate Qm1 of a main pump 54 and the emergency flow rate Qa1 of an auxiliary pump 55 can be obtained by taking a quadratic equation provided by Maheshtalwar as a mathematical model and combining the parameters, and the specific calculation step of the flow rate Q is as follows:
the method comprises the following steps: let the quadratic equation be H ═ H0+bQ+cQ2；
Wherein H is the lift, Q is the capacity, H0Is turned off when Q is equal to 0Dead lift, b and c are constant parameters;
step two: determining a water pump flow-lift characteristic curve function based on a least square method;
step 1: is provided with m pairs of observed values (H)i,Qi) Let H0＝H’0+dH0、b＝b’+db、c＝c’+dc；
Wherein, i is 1,2, …, m, H0B and c are undetermined parameters, H'0B ', c' are approximate values thereof;
step 2: with Q and H as independent and dependent variables, respectively, the error equation is listed without considering the observed value error as:
Figure BDA0003342136500000091
step 3: the error equation matrix is obtained according to the error equation listed in Step2 as follows:
AdX＝l+V；
wherein the content of the first and second substances,
Figure BDA0003342136500000092
step 4: when the least square method is adopted to determine the water pump flow-lift characteristic curve function, the error existing in the matrix A and the observed value vector l is not considered, and the criterion is as follows:
Figure BDA0003342136500000101
step 5: the least squares solution is obtained from Step3 and Step4 as:
Figure BDA0003342136500000102
step 6: according to the least square solution found
Figure BDA0003342136500000103
And
Figure BDA0003342136500000104
find parameter H0、b、c；
Step 7: and obtaining the error in the unit weight according to the residual matrix V which is AdX-l as follows:
Figure BDA0003342136500000105
step three: the parameter H obtained in the second step0B and c are substituted into a quadratic equation, and the quadratic equation H is obtained by solving0+bQ+cQ2And root-seeking formula
Figure BDA0003342136500000106
The lift is H + H1-H0 and the flow is Q when the safe water level height is reached.
The second embodiment is as follows: referring to fig. 9, the specific processing steps of the single chip processing system are as follows:
(1): the single chip microcomputer processing system receives the accumulated water hydraulic pressure and the accumulated water volume weight at the current time point detected by the underwater pressure detection unit and the water volume weight detection unit, and simultaneously calls the accumulated water hydraulic pressure, the accumulated water volume weight and the model parameters at the previous time point, so that whether the emergency starting liquid level of the main pump 54 and the auxiliary pump 55 is started or not is judged conveniently through the hydraulic pressure difference value;
(2): judging whether the maximum starting liquid level of the main pump 54 is reached or not according to the accumulated water hydraulic pressure and the accumulated water volume weight at the current time point, if so, starting the main pump 54 and then finishing the work, if not, judging whether the emergency starting liquid level difference of the main pump 54 is reached or not according to the liquid level difference value between the current time point and the previous time point, if so, starting the main pump 54 and then finishing the work, and if not, finishing the work;
(3): when the main pump 54 is operated, whether the auxiliary pump 55 is operated or not is judged according to the water pump state detection unit;
(4): if the auxiliary pump 55 does not work, judging whether the highest starting liquid level of the auxiliary pump 55 is reached according to the accumulated water hydraulic pressure and the accumulated water volume weight at the current time point, if so, starting the auxiliary pump 55 and then finishing the work, if not, judging whether the difference value between the hydraulic pressures at the current time point and the previous time point reaches the emergency starting liquid level difference of the auxiliary pump 55, if so, starting the auxiliary pump 55 and then finishing the work, if not, judging whether the liquid level at the current time point reaches the lowest stopping water level of the main pump 54 or not, if so, stopping the main pump 54 and then finishing the work, and if not, finishing the work;
(5): if the auxiliary pump 55 works, whether the liquid level reaches the lowest water level of the auxiliary pump 55 or not is judged according to the accumulated water hydraulic pressure and the accumulated water volume weight at the current time point, the auxiliary pump 55 is stopped when the liquid level reaches the lowest water level, and the auxiliary pump 55 stops working when the liquid level does not reach the lowest water level.
Through the coordinated operation of the main pump 54 and the auxiliary pump 55, the main pump 54 and the auxiliary pump 55 are prevented from being in working states all the time, the service lives of the main pump 54 and the auxiliary pump 55 are prolonged, and the energy consumption efficiency is improved.
The working principle of the invention is as follows: the working personnel firstly put the integrated pump station 5 into the water collecting well 3, the accumulated water in the water collecting well 3 enters the water suction chamber 52 through the filter screen clapboard 513, then the terminal processor 8 is started through the power cable 7, the data acquisition unit 6 acquires the accumulated water liquid level of the water collecting well 3 and the accumulated water hydraulic pressure and the accumulated water volume weight of the position where the integrated pump station 5 is located, and transmits the collected water liquid level and the accumulated water hydraulic pressure and the accumulated water volume weight to the underwater pressure detection unit and the water volume weight detection unit of the terminal processor 8 through the data transmission cable 10, the terminal processor 8 processes the received information through the single chip microcomputer processing system, controls the main pump 54 or the auxiliary pump 55 through the power transmission cable 9, judges whether the main pump reaches the highest liquid level of the main pump 54 or not according to the accumulated water hydraulic pressure and the accumulated water volume weight at the current time point detected by the underwater pressure detection unit and the water volume weight detection unit, and then the terminal processor 8 starts the main pump 54 through the power transmission cable 9, the main pump 54 discharges the accumulated water in the water suction chamber 52 to the drainage pipeline 1 through the check valve 561, the connection pipe 562 and the collection pipe three-way valve 563, and further discharges the accumulated water out of the foundation pit 4 through the drainage pipeline 1, if the accumulated water does not reach the check valve 561, it is determined whether the difference between the liquid levels of the current time point and the previous time point reaches the emergency starting liquid level difference of the main pump 54, if the difference reaches the emergency starting liquid level difference, the main pump 54 is started, otherwise, the main pump 54 is finished, in the working process of the main pump 54, the water pump state unit in the terminal processor 8 determines whether the auxiliary pump 55 works, if the auxiliary pump does not work, it is determined whether the highest liquid level of the starting of the auxiliary pump 55 is reached according to the accumulated water hydraulic pressure and the accumulated water volume weight of the current time point, the terminal processor 8 starts the auxiliary pump 55 through the power transmission cable 9, the auxiliary pump 55 discharges the accumulated water in the water suction chamber 52 to the drainage pipeline 1 through the check valve 561, the connection pipe 562 and the collection pipe three-way valve 563, and further discharges the foundation pit 4 through the drainage pipeline 1, if the difference value of the liquid levels at the current time point and the previous time point does not reach the emergency starting liquid level difference of the auxiliary pump 55, the auxiliary pump 55 is started if the difference value of the liquid levels at the current time point and the previous time point reaches the emergency starting liquid level difference of the auxiliary pump 55, otherwise, the operation is ended, if the auxiliary pump 55 operates, whether the liquid levels reach the lowest stopping water level of the auxiliary pump 55 is judged according to the accumulated water hydraulic pressure and the accumulated water volume weight at the current time point, the operation is ended after the auxiliary pump 55 is stopped if the difference value of the liquid levels reaches the minimum stopping water level, and the operation is ended if the difference value of the liquid levels does not reach the minimum stopping water level.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. Integration pump station formula intelligence foundation ditch drainage system, its characterized in that: including integration pump station (5), place in sump pit (3) of foundation ditch (4) bottom integration pump station (5), integration pump station (5) include frame subassembly (51), suction chamber (52), studio (53), main pump (54), auxiliary pump (55) and pipe assembly (56), supreme suction chamber (52) and studio (53) have set gradually under frame subassembly (51) is inside, main pump (54) and auxiliary pump (55) have been placed to studio (53) inside, pipe assembly (56) are connected main pump (54) and auxiliary pump (55) and water drainage pipeline (1) respectively.
2. The integrated pump station type intelligent foundation pit drainage system of claim 1, wherein: the pipeline assembly (56) comprises a check valve (561), connecting pipes (562) and a header three-way valve (563), the main pump (54) and the auxiliary pump (55) are connected with the connecting pipes (562) through the check valve (561) respectively, the other ends of the two connecting pipes (562) are connected with the header three-way valve (563) respectively, and the third end of the header three-way valve (563) is connected with a drainage pipeline (1) through a switching pipe (2).
3. The integrated pump station type intelligent foundation pit drainage system of claim 1, wherein: frame subassembly (51) include frame (511), plane baffle (512) and filter screen baffle (513), the inside bottom of frame (511) is provided with plane baffle (512), frame (511) all are provided with filter screen baffle (513) all around with the top, frame (511) inside is provided with water pump socket table (514), water pump socket table (514) is separated frame subassembly (51) for absorbing water room (52) and studio (53), be provided with main pump (54) and subpump (55) on water pump socket table (514).
4. The integrated pump station type intelligent foundation pit drainage system of claim 1, wherein: the inner chamber edge excavation of foundation ditch (4) has side ditch (41), the inner chamber bottom excavation of foundation ditch (4) has a plurality of branch ditches (42), side ditch (41) and branch ditch (42) handing-over department is provided with sump pit (3).
5. The integrated pump station type intelligent foundation pit drainage system of claim 1, wherein: drainage system still includes data acquisition unit (6), power cable (7), terminal treater (8), power transmission cable (9) and data transmission cable (10), data acquisition unit (6) fixed mounting is at the lateral wall of integration pump station (5), data acquisition unit (6) are arranged in to the ponding hydraulic pressure in sump pit (3), ponding unit weight to and the status information of main pump (54) and secondary pump (55) gather, the one end and the data acquisition unit (6) of data transmission cable (10) are connected, the one end and the integration pump station (5) of power transmission cable (9) are connected, the other end and the terminal treater (8) of data transmission cable (10) and power transmission cable (9) are connected, power cable (7) are connected to the input of terminal treater (8), terminal treater (8) are used for the data and the power cable (7) transmission that data acquisition unit (6) gathered to data acquisition unit (6) pass The transmitted signals are received and react correspondingly, and the states of the main pump (54) and the auxiliary pump (55) are controlled through a power transmission cable (9), and the terminal processor (8) is placed at any position far away from the foundation pit (4).
6. The integrated pump station type intelligent foundation pit drainage system of claim 5, wherein: the terminal processor (8) comprises a single chip microcomputer processing system, a water pump state detection unit, an underwater pressure detection unit, a water body volume weight detection unit, a water pump contactor control unit, a model parameter input unit and an abnormal state alarm device, wherein the single chip microcomputer processing system is respectively and electrically connected with the water pump state detection unit, the underwater pressure detection unit, the water body volume weight detection unit, the water pump contactor control unit, the model parameter input unit and the abnormal state alarm device;
the single chip microcomputer processing system is used for controlling the working state of the water pump according to the accumulated water hydraulic pressure, the accumulated water volume weight and set parameters;
the water pump state detection unit is used for detecting the working states of the main pump (54) and the auxiliary pump (55);
the underwater pressure detection unit is used for detecting the accumulated water hydraulic pressure of the position of the integrated pump station (5) at each time point;
the water volume weight detection unit is used for detecting the volume weight of water accumulated at the position of the integrated pump station (5) at each time point;
the water pump contactor control unit is used for controlling the states of a main pump (54) and an auxiliary pump (55);
the model parameter input unit is used for inputting start-stop limit parameters of a main pump (54) and an auxiliary pump (55);
the abnormal state warning device is used for giving an alarm when the main pump (54) and the auxiliary pump (55) work abnormally.
7. The integrated pump station type intelligent foundation pit drainage system of claim 6, wherein: the limit parameters input by the model parameter input unit comprise a main pump (54) starting highest water level Hmmax, a main pump (54) stopping lowest water level Hmmin, a main pump (54) emergency starting liquid level difference Qm, a main pump (54) emergency flow rate Qm1, an auxiliary pump (55) starting highest water level Hamax, an auxiliary pump (55) stopping lowest water level Hamin, an auxiliary pump (55) emergency starting liquid level difference Qa and an auxiliary pump (55) emergency flow rate Qa 1;
the control water level is determined by the safe water level given by the equipment, the Hmmax is the safe water level plus the difference value of the control water level and the safe water level, the Hmmin is the stop water level of the main pump (54) per se, the Hamax is the safe water level plus the difference value of the control water level and the safe water level, the Hamin is the stop water level of the auxiliary pump (55) per se, the safety water level given by the equipment is determined, the n% and the m% are determined by the diameter of the water collecting well (3) and the minimum start-stop interval time of the water pump, and the control water level is the position 0.5-1m below the construction surface of the foundation pit (4), and is specifically determined by the construction scheme.
8. The integrated pump station type intelligent foundation pit drainage system according to claim 7, wherein: the method is characterized in that the bottom depth H1 of a foundation pit (4) where an input water pump is located is set, the depth of a water collecting well (3) is H1, the radius of the water collecting well (3) is r, the water level is reduced by delta H within unit working time delta t of the monitoring water pump, the water pressure monitored in real time is pi, the density is m, the safe water level height of the water pump is H0, the actual lift is H1+ H1-pi/(mg), the flow rate is 3.14 r2 delta H/delta t, the emergency flow rate Qm1 of a main pump (54) and the emergency flow rate Qa1 of an auxiliary pump (55) can be calculated by taking a quadratic equation provided by Mahe Talwar as a mathematical model and combining the parameters, and the specific calculation step of the flow rate Q is as follows:
the method comprises the following steps: let the quadratic equation be H ═ H0+bQ+cQ2；
Step two: determining a water pump flow-lift characteristic curve function based on a least square method;
step 1: is provided with m pairs of observed values (H)i,Qi) Let H0＝H′0+dH0、b＝b'+db、c＝c'+dc；
Step 2: with Q and H as independent and dependent variables, respectively, the error equation is listed without considering the observed value error as:
Figure FDA0003342136490000031
step 3: the error equation matrix is obtained according to the error equation listed in Step2 as follows:
AdX＝l+V；
wherein the content of the first and second substances,
Figure FDA0003342136490000032
step 4: when the least square method is adopted to determine the water pump flow-lift characteristic curve function, the error existing in the matrix A and the observed value vector l is not considered, and the criterion is as follows:
VTv is min or
Figure FDA0003342136490000033
Step 5: the least squares solution is obtained from Step3 and Step4 as:
Figure FDA0003342136490000041
step 6: according to the least square solution found
Figure FDA0003342136490000042
And
Figure FDA0003342136490000043
find parameter H0、b、c；
Step 7: and obtaining the error in the unit weight according to the residual matrix V which is AdX-l as follows:
Figure FDA0003342136490000044
step three: the parameter H obtained in the second step0B and c are substituted into a quadratic equation, and the quadratic equation H is obtained by solving0+bQ+cQ2And root-seeking formula
Figure FDA0003342136490000045
The lift is H + H1-H0 and the flow is Q when the safe water level height is reached.
9. The integrated pump station type intelligent foundation pit drainage system of claim 6, wherein: the underwater pressure detection unit is a pressure sensor, and the water volume weight detection unit is a density sensor.
10. The integrated pump station type intelligent foundation pit drainage system of claim 6, wherein: the specific processing steps of the single chip microcomputer processing system are as follows:
(1): the single chip microcomputer processing system receives the accumulated water hydraulic pressure and the accumulated water volume weight at the current time point detected by the underwater pressure detection unit and the water volume weight detection unit, and simultaneously calls the accumulated water hydraulic pressure, the accumulated water volume weight and the model parameters at the previous time point;
(2): judging whether the maximum starting liquid level of the main pump (54) is reached or not according to the accumulated water hydraulic pressure and the accumulated water volume weight at the current time point, if so, finishing the work after the main pump (54) is started, if not, judging whether the emergency starting liquid level difference of the main pump (54) is reached or not according to the liquid level difference value between the current time point and the previous time point, if so, finishing the work after the main pump (54) is started, and if not, finishing the work;
(3): when the main pump (54) works, whether the auxiliary pump (55) works is judged according to the water pump state detection unit;
(4): if the auxiliary pump (55) does not work, judging whether the maximum starting liquid level of the auxiliary pump (55) is reached according to the accumulated water hydraulic pressure and the accumulated water volume weight at the current time point, if so, starting the auxiliary pump (55) and then finishing the work, if not, judging whether the hydraulic pressure difference value between the current time point and the previous time point reaches the emergency starting liquid level difference of the auxiliary pump (55), if so, starting the auxiliary pump (55) and then finishing the work, if not, judging whether the liquid level at the current time point reaches the main pump (54) and stops the minimum water level, if so, stopping the main pump (54) and then finishing the work, and if not, finishing the work;
(5): if the auxiliary pump (55) works, whether the liquid level reaches the lowest water level of the auxiliary pump (55) or not is judged according to the accumulated water hydraulic pressure and the accumulated water volume weight of the current time point, the auxiliary pump (55) is stopped when the liquid level reaches the lowest water level, and the auxiliary pump (55) is stopped and then works when the liquid level does not reach the lowest water level.
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