CN113656969B - Water pump type selection method suitable for track traffic underground section ballast bed pump station - Google Patents
Water pump type selection method suitable for track traffic underground section ballast bed pump station Download PDFInfo
- Publication number
- CN113656969B CN113656969B CN202110949211.XA CN202110949211A CN113656969B CN 113656969 B CN113656969 B CN 113656969B CN 202110949211 A CN202110949211 A CN 202110949211A CN 113656969 B CN113656969 B CN 113656969B
- Authority
- CN
- China
- Prior art keywords
- water
- water pump
- pump
- pipe
- outlet pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/11—Complex mathematical operations for solving equations, e.g. nonlinear equations, general mathematical optimization problems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Mathematical Optimization (AREA)
- Data Mining & Analysis (AREA)
- General Engineering & Computer Science (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Pure & Applied Mathematics (AREA)
- Computer Hardware Design (AREA)
- Operations Research (AREA)
- Evolutionary Computation (AREA)
- Algebra (AREA)
- Geometry (AREA)
- Databases & Information Systems (AREA)
- Software Systems (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of rail transit, in particular to a water pump type selecting method suitable for a track bed pump station in an underground section of rail transit, which comprises the steps that L1, the pit depth S of the track bed pump station is determined according to the construction method type and the track bed type of an interval tunnel; determining the specification of a water pumping pipe of a ballast bed pump station and the specification of a water outlet pipe of a water pump; determining a drainage setting amount P of a ballast bed pump station; l2 determines the lifting height Ht of the track bed pump station according to the water pit depth S; l3 selects a water pump with a proper model according to the water pit depth S and the lifting height Ht of the ballast bed pump station, so that the height h1 of the water pump is smaller than the water pit depth S, and the maximum lift Hst of the water pump is larger than the lifting height Ht; l4, establishing a water pump performance regression curve equation according to the water pump performance curve of the water pump with the corresponding model; and L5, establishing a pipeline characteristic curve equation according to the corresponding specification of the water pumping pipe and the specification of the water outlet pipe of the water pump. The water pump model selecting method can simply and efficiently select the required water pump model, the number of the water pumps and the number of the required water raising pipes.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a water pump type selecting method suitable for a rail bed pump station in an underground section of rail transit.
Background
With the development of urban rail transit, the underpass tunnel engineering is more and more. In the tunnel construction process, a communication channel is also required to be constructed, wherein the communication channel is a connecting channel arranged between two tunnels and is used for people evacuation, escape and fire protection in emergency, and one communication channel is usually arranged every 600 meters in an underground tunnel. The middle part of the connecting channel is required to be provided with a waste water pump room which is an important component part of a tunnel drainage system, and a water pump is arranged in the waste water pump room and is used for realizing drainage in a tunnel (the lowest point of the tunnel is positioned below a road, and cleaning water, surrounding rock water seepage, precipitation and the like in the tunnel cannot be naturally discharged).
The existing wastewater pump house and the connecting channel are generally combined and built, the wastewater pump house needs to be built by excavating 3-5 meters downwards at the bottom of the wastewater pump house after the connecting channel is excavated, the construction difficulty is high, the construction period is long, and the construction risk is high. Therefore, the prior art can directly utilize the ballast bed body to arrange a ballast bed pump station to replace the traditional wastewater pump house. However, due to the limitations of the pit depth of the track bed pump station, the lifting height of the water pump, the water delivery length of the water pumping pipe of the water pump and the parallel quantity of the water pumps, the model selection of the water pump becomes extremely complex and difficult.
Because, at present, the mode of selecting the water pump commonly used in China generally selects the types and the quantity of the water pumps according to the design flow, the lifting height and the pipeline characteristics, and then designs the height and the plane size of the water collection pit according to the selected water pump. However, the pit depth of the track bed pump house is obviously limited by a tunnel construction method and track bed types, and the selected water pump is difficult to meet the height requirement of the track bed pit by adopting the existing water pump type selecting method, and the selected model also does not meet the requirements of single operation and multiple operation of the water pump. Therefore, improvements to existing water pump selection methods are needed.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides a water pump model selection method suitable for a track traffic underground section ballast pump station, which can simply and efficiently select the required water pump model, the required water pump number and the required water pumping pipe number.
The technical scheme adopted for solving the technical problems is as follows: a water pump model selecting method suitable for track traffic underground section ballast bed pump stations comprises the following steps,
l1 determines the pit depth S of a track bed pump station according to the construction method type and the track bed type of the interval tunnel; determining the specification of a water pumping pipe of a ballast bed pump station and the specification of a water outlet pipe of a water pump; determining a drainage setting amount P of a ballast bed pump station;
l2 determines the lifting height Ht of the track bed pump station according to the water pit depth S;
l3 selects a water pump with a proper model according to the water pit depth S and the lifting height Ht of the ballast bed pump station, so that the height h1 of the water pump is smaller than the water pit depth S, and the maximum lift Hst of the water pump is larger than the lifting height Ht;
l4, establishing a water pump performance regression curve equation according to the water pump performance curve of the water pump with the corresponding model;
l5 establishes a pipeline characteristic curve equation according to the corresponding specification of the water pumping pipe and the specification of the water outlet pipe of the water pump;
and L6 simulates the operation condition of the water pump through a water pump performance regression curve equation and a pipeline characteristic curve equation to obtain the number of water pumps and the number of water pipes meeting the drainage design quantity P.
Preferably, the L4 specifically comprises
L41 collects sample point data on a water pump performance curve, wherein the sample point data comprises a water pump lift H and a water pump flow Q;
l42 substitutes the sample data into a regression curve equation of water pump performanceTo obtain the parameters A1, A2 … … An of the regression curve equation of the water pump performance.
Preferably, the L5 specifically comprises
L51 determination formulaWherein H is the lift of the water pump, ht is the lifting height of the ballast pump station, I is the head loss of the pipeline in unit length, and L is the length of the pipeline;
l52 determination formulaWherein->Is a sea clarifier-william coefficient,>the inner diameter of the pipeline is given, and q is the flow rate of the pipeline;
l53 determines the equation of the pipeline characteristic curveWherein L1 is the total length of the water raising pipe, < >>For the inner diameter of the water pumping pipe, q1 is the flow rate of the water pumping pipe, L2 is the total length of the water outlet pipe of the water pump, and +.>The internal diameter of the water outlet pipe of the water pump is given, and q2 is the flow of the water outlet pipe of the water pump.
Preferably, the total length L1 of the pumping pipes is the sum of the lengths of all pumping pipe monomers, and the length of each pumping pipe monomer is the sum of the linear length of the pumping pipe monomer and the converted length of the pipe fitting and the valve of the pumping pipe monomer.
Preferably, the total length L2 of the water outlet pipe of the water pump is the sum of the lengths of all the water outlet pipe monomers, and the length of each water outlet pipe monomer of the water pump is the sum of the linear length of the water outlet pipe monomer of the water pump and the converted length of the pipe fitting and the valve of the water outlet pipe monomer of the water pump.
Preferably, the first pipe orifice of the water pump outlet pipe is connected with the water pump, and the second pipe orifice of the water pump outlet pipe is connected with the pipe body of the water pumping pipe.
Preferably, the L6 specifically comprises
L61 selects 1 pumping pipe and N pumps, simulates a water pump performance regression curve on a software platform through a water pump performance regression curve equation, simulates a pipeline characteristic curve on the software platform through a pipeline characteristic curve equation, and when the simulated flow corresponding to the intersection point of the water pump performance regression curve and the pipeline characteristic curve is greater than or equal to the drainage set metering P, the number of the pumps is indicated to meet the use requirement; when all N does not meet the use requirement, entering the next step;
l62 is used for selecting 2 pumping pipes and N water pumps, simulating a water pump performance regression curve on a software platform through a water pump performance regression curve equation, simulating a pipeline characteristic curve on the software platform through a pipeline characteristic curve equation, and indicating that the number of the water pumps meets the use requirement when the simulated flow corresponding to the intersection point of the water pump performance regression curve and the pipeline characteristic curve is greater than or equal to the drainage set metering P; when N does not meet the use requirement, the model of the water pump is replaced.
Preferably, N is 1 or 2 or 3 or 4 or 5 or 6 or 7 and is substituted in order from small to large.
Preferably, the L3 further includes determining a maximum water pump flow rate Qst of the single water pump, and a minimum allowable water level h2 and sump area a of the water pump, so that an effective volume of the sump is not less than 15 to 20 minutes of water yield of the single water pump at the maximum water pump flow rate Qst.
Preferably, the lifting height Ht of the ballast bed pump station is the height difference from the lowest water level of the water collection pit to the ground of the outlet of the water pumping pipe.
Advantageous effects
The water pump model selection method can firstly determine the water pit depth and the lifting height according to different tunnel construction method types and different road bed types, then select water pumps which can meet the use requirements in different brands according to the water pit depth and the lifting height, then determine the water pump performance regression curve of the water pump with corresponding model and the pipeline characteristic curve of the pipeline with corresponding model, and finally perform working condition simulation through the water pump performance regression curve and the pipeline characteristic curve to determine the number of required water pumps and the number of required water pipes.
Drawings
FIG. 1 is a cross-sectional view of a track bed pump house sump of the present invention;
FIG. 2 is a schematic diagram of the water pump of the present invention;
FIG. 3 is a schematic diagram of a water pump performance curve according to the present invention;
FIG. 4 is a schematic diagram of a regression curve of water pump performance according to the present invention;
FIG. 5 is a simulated operational diagram of the 1 pump of the present invention;
FIG. 6 is a simulated operational diagram of 2 pumps of the present invention;
FIG. 7 is a simulated operational diagram of 3 pumps of the present invention;
FIG. 8 is a simulated operational diagram of 4 pumps of the present invention;
FIG. 9 is a simulated operational diagram of 5 pumps of the present invention;
FIG. 10 is a simulated operational diagram of 6 pumps of the present invention;
fig. 11 is a schematic diagram of the connection of a scoop tube according to the present invention;
fig. 12 is a schematic diagram of the connection of two water pipes according to the present invention.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
An embodiment I, as shown in figures 1 and 2, is a water pump model selection method suitable for track traffic underground section ballast bed pump stations, comprising the following steps,
l1 determines the pit depth S of a track bed pump station according to the construction method type and the track bed type of the interval tunnel; determining the specification of a water pumping pipe of a ballast bed pump station and the specification of a water outlet pipe of a water pump; and determining the drainage setting quantity P of the ballast bed pump station.
The construction method type of the interval tunnel can be one of a shield tunnel, a mine tunnel, an open cut tunnel and the like. The ballast bed type can be one of a common ballast bed, a vibration reduction pad ballast bed or a steel spring floating slab ballast bed and the like. The invention needs to determine the pit depth S of the track bed pump station according to the actual section tunnel construction method type and track bed type, for example, for a shield tunnel and a common track bed, the pit depth S can be set to 635 mm.
In addition, the invention can select proper specifications of the water pumping pipe and the water outlet pipe of the water pump, for example, the length of a single water pumping pipe can be 1000 meters, and the inner diameter of the water pumping pipe can be 150 millimeters; the length of the single water pump outlet pipe can be 11.2 meters (including a 90-degree elbow of 4.5 meters, a gate valve of 0.3 meters, a check valve of 3.4 meters and a straight pipe length of 3 meters), and the inner diameter of the water pump outlet pipe can be 50 millimeters.
Further, the present invention may generally determine the drainage setting amount P of the ballast pump station, and the drainage setting amount P may be 10L/s.
And L2 determines the lifting height Ht of the track bed pump station according to the water pit depth S. The lifting height Ht of the track bed pump station is the height difference from the lowest water level of the water collecting pit to the ground of the outlet of the water lifting pipe, and the invention can estimate the approximate lifting height Ht because the depth S of the water collecting pit and the approximate layout of the water lifting pipe are known. The lifting height Ht of the present invention may be 10 meters.
And L3 selects a water pump with a proper model according to the water pit depth S and the lifting height Ht of the ballast bed pump station, so that the height h1 of the water pump is smaller than the water pit depth S, and the maximum lift Hst of the water pump is larger than the lifting height Ht. According to the invention, a water pump with the model MF 3102 LT 3-210 (N=4.4) can be selected, the maximum lift Hst of the water pump is about 26 m, the height h1 of the water pump is 600 mm, the minimum allowable liquid level h2 of the water pump is 100 mm, and the conditions that the height h1 of the water pump is=600 mm and is smaller than the depth S=635 mm of a water collecting pit, and the maximum lift Hst is 26 m and is larger than the lifting height Ht=10 m are just met. In addition, (sump depth S-minimum allowable liquid level h2 of the water pump) sump area a=effective volume of sump, and effective volume of sump needs not less than 15 to 20 minutes water yield of a single water pump at maximum water pump flow rate Qst, because sump depth S, minimum allowable liquid level h2 of the water pump and maximum water pump flow rate Qst of the water pump are already determined, required area a of sump can be found, if a common ballast bed of the invention can be provided with sump with depth S and area a, it is proved that the water pump model selected by the invention is satisfactory for use.
In the water pump model selection method, the model of the water pump is approximately determined.
And L4, establishing a water pump performance regression curve equation according to the water pump performance curve of the corresponding model water pump.
Taking a water pump with a model MF 3102 LT 3-210 (N=4.4) as an example, FIG. 3 shows a pump performance curve of 1 pump with the model, and FIG. 4 shows a model MF 3102 LT 3-210, which is obtained by first collecting the pump performance curveCollecting enough sample data, wherein the sample data comprises a water pump lift H and a water pump flow Q, and then carrying out unit conversion on the sample data and substituting the sample data into a water pump performance regression curve equationThe invention adopts A4-degree water pump performance regression curve equation to obtain the corresponding water pump performance regression curve equation, wherein A1 is-0.0011, A2 is 0.0162, A3 is-0.1746 and A4 is-0.5497. When a regression curve equation of the water pump performance when a plurality of water pumps are operated in parallel is required to be established, a plurality of water pump performance curves of the model water pumps are required to be acquired firstly, and then enough sample point data are acquired on the water pump performance curves.
And L5, establishing a pipeline characteristic curve equation according to the corresponding specification of the water pumping pipe and the specification of the water outlet pipe of the water pump. As shown in fig. 11 and 12, a first pipe orifice of the water outlet pipe of the water pump is connected with the water pump, and a second pipe orifice of the water outlet pipe of the water pump is connected with the pipe body of the water pumping pipe. Fig. 11 is a schematic structural diagram of connection between one water lifting pipe and three water pump water outlet pipes, and fig. 12 is a schematic structural diagram of connection between one water lifting pipe and three water pump water outlet pipes.
The L5 specifically comprises an L51 determination formulaWherein H is the lift of the water pump, ht is the lifting height of the ballast pump station, I is the head loss of the pipeline in unit length, and L is the length of the pipeline; l52 determination formula->Wherein->Is of the sea Cheng-William coefficient, +.>Is a pipelineThe inner diameter, q, is the pipeline flow; l53 determines the equation of the pipeline characteristic curveWherein L1 is the total length of the water raising pipe, < >>For the inner diameter of the water pumping pipe, q1 is the flow rate of the water pumping pipe, L2 is the total length of the water outlet pipe of the water pump, and +.>For the inner diameter of the water outlet pipe of the water pump, q2 is the flow rate of the water outlet pipe of the water pump, and L1+L2=L. The total length L1 of the water pumping pipes is the sum of the lengths of all the water pumping pipe monomers, and the length of each water pumping pipe monomer is the sum of the linear length of the water pumping pipe monomer and the converted length of the pipe fitting and the valve of the water pumping pipe monomer. The total length L2 of the water pump water outlet pipe is the sum of the lengths of all the water pump water outlet pipe monomers, and the length of each water pump water outlet pipe monomer is the sum of the linear length of the water pump water outlet pipe monomer and the converted length of the pipe fitting and the valve of the water pump water outlet pipe monomer.
Because, ht is 10 meters,100->150 mm, L1 is the length of a single water lifting pipe of 1000 m, the number of the water lifting pipes is n1, < ->The length of L2 is 50 mm, the length of a single water pump water outlet pipe is 11.2 m, the number of the water pump water outlet pipes is n2, and the pipeline characteristic curve equation of the invention is obtained>And n1=n2×q2, q2=n1/n2×q1, and substituting q2 into the pipeline characteristic curve equation can obtain the curve equation of H and q 2.
And L6 simulates the operation condition of the water pump through a water pump performance regression curve equation and a pipeline characteristic curve equation to obtain the number of water pumps and the number of water pipes meeting the drainage design quantity P. The L6 specifically comprises
L61 selects 1 pumping pipe and N pumps, simulates a water pump performance regression curve on a software platform through a water pump performance regression curve equation, simulates a pipeline characteristic curve on the software platform through a pipeline characteristic curve equation, and when the simulated flow corresponding to the intersection point of the water pump performance regression curve and the pipeline characteristic curve is greater than or equal to the drainage set metering P, the number of the pumps is indicated to meet the use requirement; and when all N does not meet the use requirement, the step L62 is carried out.
L62 is used for selecting 2 pumping pipes and N water pumps, simulating a water pump performance regression curve on a software platform through a water pump performance regression curve equation, simulating a pipeline characteristic curve on the software platform through a pipeline characteristic curve equation, and indicating that the number of the water pumps meets the use requirement when the simulated flow corresponding to the intersection point of the water pump performance regression curve and the pipeline characteristic curve is greater than or equal to the drainage set metering P; and when N does not meet the use requirement, the water pump model is replaced.
According to the invention, 1 water pumping pipe (only 1 or 2 water pumping pipes are usually arranged) and 1 water pump are selected, a pipeline characteristic curve and a water pump performance regression curve are simulated on a software platform, as shown in fig. 5, the simulated flow corresponding to the intersection point of the pipeline characteristic curve with the lifting height of 10 meters and the water pump performance curve of 1 pump is smaller than the drainage design quantity P=10L/s, so that the 1 pump cannot meet the use requirement.
Then, 1 water lifting pipe and 2 water pumps are selected, a pipeline characteristic curve and a water pump performance regression curve are simulated on a software platform, as shown in fig. 6, the simulated flow corresponding to the intersection point of the pipeline characteristic curve with the lifting height of 10 meters and the water pump performance curve of 2 pumps is larger than the drainage design amount p=10l/s, and therefore, the two pumps can meet the use requirements. At this time, the number of pumps of the selected type number can be determined to be two, and the number of the water raising pipes is one.
The second embodiment is different from the first embodiment in that the lifting height is 15 meters. As shown in fig. 5 and 6, on the premise of 1 water lifting pipe, 1 pump or 2 pumps cannot meet the use requirement. Then, 1 water lifting pipe and 3 water pumps are selected, a pipeline characteristic curve and a water pump performance regression curve are simulated on a software platform, as shown in fig. 7, the simulated flow corresponding to the intersection point of the pipeline characteristic curve with the lifting height of 15 meters and the water pump performance curve of 3 pumps is larger than the drainage design amount p=10l/s, so that the three pumps can meet the use requirements.
The third embodiment is different from the first embodiment in that the lifting height is 20 m. As shown in fig. 5 to 10, on the premise of 1 water lifting pipe, 1 pump or 2 pumps or 3 pumps or 4 pumps or 5 pumps or 6 pumps cannot meet the use requirement. At this time, consider to set up two water lifting pipes, when water lifting pipes set up quantity and two and every water lifting pipe all correspond when connecting two water pumps, satisfy the user demand.
The above examples are only illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention. Various modifications and improvements of the technical scheme of the present invention will fall within the protection scope of the present invention without departing from the design concept of the present invention, and the technical content of the present invention is fully described in the claims.
Claims (8)
1. A water pump selection method suitable for track traffic underground section ballast bed pump stations is characterized by comprising the following steps of: comprises the steps of,
l1 determines the pit depth S of a track bed pump station according to the construction method type and the track bed type of the interval tunnel; determining the specification of a water pumping pipe of a ballast bed pump station and the specification of a water outlet pipe of a water pump; determining a drainage setting amount P of a ballast bed pump station;
l2 determines the lifting height Ht of the track bed pump station according to the water pit depth S;
l3 selects a water pump with a proper model according to the water pit depth S and the lifting height Ht of the ballast bed pump station, so that the height h1 of the water pump is smaller than the water pit depth S, and the maximum lift Hst of the water pump is larger than the lifting height Ht;
l4, establishing a water pump performance regression curve equation according to the water pump performance curve of the water pump with the corresponding model;
l5 establishes a pipeline characteristic curve equation according to the corresponding specification of the water pumping pipe and the specification of the water outlet pipe of the water pump;
l6 simulates the operation condition of the water pump through a water pump performance regression curve equation and a pipeline characteristic curve equation to obtain the number of water pumps and the number of water pipes meeting the drainage set quantity P;
the L4 specifically comprises:
l41 collects sample point data on a water pump performance curve, wherein the sample point data comprises a water pump lift H and a water pump flow Q;
l42 substitutes the sample data into a regression curve equation of water pump performanceTo obtain parameters A1, A2 … … An of the regression curve equation of the water pump performance;
the L5 specifically comprises:
l51 determination formulaWherein H is the lift of the water pump, ht is the lifting height of the ballast pump station, I is the head loss of the pipeline in unit length, and L is the length of the pipeline;
l52 determination formulaWherein->Is of the sea Cheng-William coefficient, +.>The inner diameter of the pipeline is given, and q is the flow rate of the pipeline;
l53 determines the equation of the pipeline characteristic curveWherein L1 is the total length of the water raising pipe, < >>For the inner diameter of the water pumping pipe, q1 is the flow rate of the water pumping pipe, L2 is the total length of the water outlet pipe of the water pump, and +.>The internal diameter of the water outlet pipe of the water pump is given, and q2 is the flow of the water outlet pipe of the water pump.
2. A water pump selection method suitable for track traffic underground section ballast pump stations according to claim 1, characterized by: the total length L1 of the water pumping pipes is the sum of the lengths of all the water pumping pipe monomers, and the length of each water pumping pipe monomer is the sum of the linear length of the water pumping pipe monomer and the converted length of the pipe fitting and the valve of the water pumping pipe monomer.
3. A water pump selection method suitable for track traffic underground section ballast pump stations according to claim 1, characterized by: the total length L2 of the water pump water outlet pipe is the sum of the lengths of all the water pump water outlet pipe monomers, and the length of each water pump water outlet pipe monomer is the sum of the linear length of the water pump water outlet pipe monomer and the converted length of the pipe fitting and the valve of the water pump water outlet pipe monomer.
4. A water pump selection method suitable for track traffic underground section ballast pump stations according to claim 1, characterized by: the first pipe orifice of the water pump outlet pipe is connected with the water pump, and the second pipe orifice of the water pump outlet pipe is connected with the pipe body of the water pumping pipe.
5. A water pump selection method suitable for track traffic underground section ballast pump stations according to claim 1, characterized by: the L6 specifically comprises
L61 selects 1 pumping pipe and N pumps, simulates a water pump performance regression curve on a software platform through a water pump performance regression curve equation, simulates a pipeline characteristic curve on the software platform through a pipeline characteristic curve equation, and when the simulated flow corresponding to the intersection point of the water pump performance regression curve and the pipeline characteristic curve is greater than or equal to the drainage set metering P, the number of the pumps is indicated to meet the use requirement; when all N does not meet the use requirement, entering the next step;
l62 is used for selecting 2 pumping pipes and N water pumps, simulating a water pump performance regression curve on a software platform through a water pump performance regression curve equation, simulating a pipeline characteristic curve on the software platform through a pipeline characteristic curve equation, and indicating that the number of the water pumps meets the use requirement when the simulated flow corresponding to the intersection point of the water pump performance regression curve and the pipeline characteristic curve is greater than or equal to the drainage set metering P; when N does not meet the use requirement, the model of the water pump is replaced.
6. The water pump selection method suitable for track traffic underground section ballast pump stations according to claim 5, wherein: the N is 1 or 2 or 3 or 4 or 5 or 6 or 7, and is substituted from small to large.
7. A water pump selection method suitable for track traffic underground section ballast pump stations according to claim 1, characterized by: the L3 further comprises the step of determining the maximum water pump flow Qst of the single water pump, and the minimum allowable liquid level h2 and sump area A of the water pump, so that the effective volume of the sump is not smaller than the water yield of the single water pump at the maximum water pump flow Qst for 15 to 20 minutes.
8. A water pump selection method suitable for track traffic underground section ballast pump stations according to claim 1, characterized by: the lifting height Ht of the track bed pump station is the height difference from the lowest water level of the water collection pit to the ground of the outlet of the water lifting pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110949211.XA CN113656969B (en) | 2021-08-18 | 2021-08-18 | Water pump type selection method suitable for track traffic underground section ballast bed pump station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110949211.XA CN113656969B (en) | 2021-08-18 | 2021-08-18 | Water pump type selection method suitable for track traffic underground section ballast bed pump station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113656969A CN113656969A (en) | 2021-11-16 |
| CN113656969B true CN113656969B (en) | 2023-09-08 |
Family
ID=78480973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110949211.XA Active CN113656969B (en) | 2021-08-18 | 2021-08-18 | Water pump type selection method suitable for track traffic underground section ballast bed pump station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113656969B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1366705A1 (en) * | 1986-05-16 | 1988-01-15 | А.З.Шварцман | Device for selection of working pump in two-set pumping station |
| US5487621A (en) * | 1992-06-18 | 1996-01-30 | Hitachi, Ltd. | Large-depth underground drainage facility and method of running same |
| EP0726396A1 (en) * | 1995-02-09 | 1996-08-14 | Grundfos A/S | Method for fixing the output performance limits of electrically driven central heating circulation pumps |
| CN202402076U (en) * | 2011-12-08 | 2012-08-29 | 铁道第三勘察设计院集团有限公司 | Drainage pump station for underground line intervals of rail traffic |
| CN104989653A (en) * | 2015-05-25 | 2015-10-21 | 扬州大学 | Water pump selection method for low-lift pump unit based on impeller nominal average flow speed |
| CN105512948A (en) * | 2015-12-22 | 2016-04-20 | 扬州大学 | Automatic water quantity measuring method of small-scale pumping station |
| CN110705130A (en) * | 2019-10-31 | 2020-01-17 | 扬州大学 | Water pump model selection method for low-lift pump device of large pump station |
| CN111008480A (en) * | 2019-12-13 | 2020-04-14 | 湘潭大学 | Newly-added pump model selection method for energy expansion requirement of centrifugal pump station |
-
2021
- 2021-08-18 CN CN202110949211.XA patent/CN113656969B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1366705A1 (en) * | 1986-05-16 | 1988-01-15 | А.З.Шварцман | Device for selection of working pump in two-set pumping station |
| US5487621A (en) * | 1992-06-18 | 1996-01-30 | Hitachi, Ltd. | Large-depth underground drainage facility and method of running same |
| EP0726396A1 (en) * | 1995-02-09 | 1996-08-14 | Grundfos A/S | Method for fixing the output performance limits of electrically driven central heating circulation pumps |
| CN202402076U (en) * | 2011-12-08 | 2012-08-29 | 铁道第三勘察设计院集团有限公司 | Drainage pump station for underground line intervals of rail traffic |
| CN104989653A (en) * | 2015-05-25 | 2015-10-21 | 扬州大学 | Water pump selection method for low-lift pump unit based on impeller nominal average flow speed |
| CN105512948A (en) * | 2015-12-22 | 2016-04-20 | 扬州大学 | Automatic water quantity measuring method of small-scale pumping station |
| CN110705130A (en) * | 2019-10-31 | 2020-01-17 | 扬州大学 | Water pump model selection method for low-lift pump device of large pump station |
| CN111008480A (en) * | 2019-12-13 | 2020-04-14 | 湘潭大学 | Newly-added pump model selection method for energy expansion requirement of centrifugal pump station |
Non-Patent Citations (1)
| Title |
|---|
| Optimization Design of Industrial Water Supply Pump Station Considering the Influence of Atmospheric Temperature on Operation Cost;Jia Mingxing、hang Jialun、Xu Yuemei;《IEEE ACCESS》;第8卷(第2020期);161702-161712 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113656969A (en) | 2021-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108446464B (en) | Method for constructing large drainage system by using SWMM model | |
| CN104847010B (en) | A kind of miniature groundwater reservoir in city and construction method | |
| CN108316354A (en) | With waterproof, the underground pipe gallery structure of drain function and its construction method | |
| CN208088344U (en) | With waterproof, the underground pipe gallery structure of drain function | |
| CN105951969A (en) | Water storage and flood drainage system and storage and drainage method | |
| CN106996135A (en) | A kind of intelligent peak rain-water accumulating heat-extraction system and method based on city integrated piping lane | |
| CN202402076U (en) | Drainage pump station for underground line intervals of rail traffic | |
| CN113656969B (en) | Water pump type selection method suitable for track traffic underground section ballast bed pump station | |
| CN212927943U (en) | Reverse slope drainage system in open cut tunnel construction process | |
| CN109681230A (en) | A kind of double-layer shield tunnel upper and lower level garage's service channel and its setting method | |
| CN108149775A (en) | A kind of prefabricated Boosting pumping station of PE and its mounting process | |
| CN202273312U (en) | Vacuum drainage system for draining rainwater of urban underpass road | |
| CN111501950A (en) | Drainage system for logistics transportation of underground pipe gallery | |
| CN215858009U (en) | Water supply system using underground water of super-long tunnel as water source of fire pool in tunnel | |
| CN203383853U (en) | Buffering system for solving problem of insufficient drainage ability of tunnel central ditch | |
| CN215253321U (en) | Drainage system of underpass tunnel | |
| CN211036611U (en) | Road surface structure in sponge city | |
| CN106836287A (en) | A kind of construction method of pipe gallery | |
| CN111810236A (en) | Full-wrapping type comprehensive water-proof and drainage system for water-rich tunnel | |
| CN111139864A (en) | Utility tunnel | |
| CN204512655U (en) | A kind of waste pipe | |
| CN220671859U (en) | Underground construction structure | |
| Rocas et al. | Planning, Sequencing, and Design of Canada’s Largest CSO Project | |
| CN111340649B (en) | Method for measuring connectivity of water system structure | |
| CN217105405U (en) | A integration rainwater box culvert for under town road green belt |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |