KR101815192B1 - Pipeline system with structure controlling water hammering pressure by looped pipe and pressure surge control method through optimization of pipeline dimensions and hydraulic structure for a looped pipeline system equipped with a surge arrest device - Google Patents

Pipeline system with structure controlling water hammering pressure by looped pipe and pressure surge control method through optimization of pipeline dimensions and hydraulic structure for a looped pipeline system equipped with a surge arrest device Download PDF

Info

Publication number
KR101815192B1
KR101815192B1 KR1020150116930A KR20150116930A KR101815192B1 KR 101815192 B1 KR101815192 B1 KR 101815192B1 KR 1020150116930 A KR1020150116930 A KR 1020150116930A KR 20150116930 A KR20150116930 A KR 20150116930A KR 101815192 B1 KR101815192 B1 KR 101815192B1
Authority
KR
South Korea
Prior art keywords
water
pressure
time series
control structure
pipe
Prior art date
Application number
KR1020150116930A
Other languages
Korean (ko)
Other versions
KR20170022212A (en
Inventor
김상현
Original Assignee
부산대학교 산학협력단
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 부산대학교 산학협력단 filed Critical 부산대학교 산학협력단
Priority to KR1020150116930A priority Critical patent/KR101815192B1/en
Publication of KR20170022212A publication Critical patent/KR20170022212A/en
Application granted granted Critical
Publication of KR101815192B1 publication Critical patent/KR101815192B1/en

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/04—Devices damping pulsations or vibrations in fluids
    • F16L55/045—Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/08—Pipe-line systems for liquids or viscous products
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Pipe Accessories (AREA)
  • Pipeline Systems (AREA)

Abstract

The present invention provides an irrigation system with a loop tube addition type hydrostatic pressure control structure and a method for controlling water supply to the irrigation water by optimization of the pipe source and the control structure. The water supply system having the loop pipe addition type water pressure control structure according to the present invention and the water supply and surge control method by optimizing the pipe source and the control structure are provided with the water tank-pipe-water hammer pressure control structure- By providing a water tank system with a loop tank as a typical water supply system and a water tank system with a valve system as a reservoir tank-pipe-loop pipe-water hammer pressure control structure-loop pipe- The effect of the water hammer pressure attenuation with high efficiency is minimized while minimizing the construction cost, and the frequency domain of the governing equations of the irrigation system (meaning the area of the data obtained by the Fourier transform of the time series data) In this paper, we propose a method for designing a system for water pressure control. As it has the technical features that further enhance the water hammer pressure damping efficiency.

Description

TECHNICAL FIELD [0001] The present invention relates to an irrigation system having a loop-pipe-type water-pressure control structure, an irrigation system with a loop-pipe-type water-pressure control structure, and a hydraulic structure for a looped pipeline system equipped with a surge arrest device}

The present invention relates to a water pipe system having a water pipe pressure control structure with a loop tube addition type and a water supply surge control method by optimizing a pipe source and a control structure. More particularly, the present invention relates to a water tank- This system provides a water tank system with a loop system such as a water tank, a pipeline-loop tube, a water hammer pressure control structure, a loop tube, a pipeline-valve system, and a water hammer pressure damping effect by a loop tube The efficiency of the water hammer pressure attenuation with high efficiency is searched while the system construction cost is minimized and the frequency domain of the governing equations of the irrigation system (term of the data area of the form obtained by Fourier transform of the time series data) In this paper, we propose a system for water pressure control The present invention relates to an irrigation system with a loop-tube-added water hammer pressure control structure, in which the transient design is prevented while the water hammer attenuation efficiency is further increased, and a surge control method for the irrigation water by optimizing the tube source and the control structure.

In a water pipe system including a water pipe installed to send water from a water purification plant to a reservoir, sudden hydraulic pressure fluctuation may occur in a system control process such as a valve on / off operation. Also, if the pump is operated to raise the head for the purpose of sending water to the reservoir from the water pipe network, the pipe network may be destroyed due to the separation of orders when the pump is out of power. In order to reduce the damage, the water hammer pressure control structure 40 such as a tank, an air chamber, and the like is installed as shown in FIG. In ships and plants, emergency interception systems are required to respond to emergency shutdown situations when sending and receiving through loading arms.

On the other hand, water pressure control structures such as surge tanks, air chambers, check valves, and air valves are designed and used in various forms. The water hammer pressure control structure used in the field irrigation system can perform the function of supplying the flow rate or absorbing the water pressure to absorb the high water hammer pressure, It may also function to prevent backflow to protect. However, such a hydrodynamic pressure control structure is often over-designed and a separate hydrodynamic pressure control structure has to be additionally installed in order to cope with a secondary problem that arises after installing a hydrodynamic pressure control structure such as a check valve . As a result, the construction cost of the irrigation system is increased.

delete

delete

delete

Korean Patent No. 10-0742398 entitled " Wet Shock Recognition Method and Control Method of Water Impact Prevention System " Korean Registered Patent Publication No. 10-1198878 "Water Impact Recognition and Energy Saving Type Water Impact Prevention System and Control Method" Korean Patent Registration No. 10-0868908 entitled "

Accordingly, it is an object of the present invention to solve the problems of the prior art, and to provide a roof pipe connecting a front side pipeline portion and a rear side pipeline portion between a water tank and a main valve, The present invention aims to provide a composite surge control system which secures an additional effect of hydrodynamic pressure damping by reducing the cost of system construction by reducing the resources of the conventional hydrodynamic pressure control device.

In addition, the present invention differs the governing equations of the irrigation system on the characteristic line, integrates them, and implements boundary conditions such as valves, water reservoirs or leaks to solve the problems in time and space, The conventional waterway system analysis method that calculates the water hammer pressure attenuation effect of the water hammer pressure control structure by setting the boundary condition of the water hammer tank as the surge tank, the air chamber, the check valve, etc., Unlike limitations on precision, irrigation is described in the frequency domain (meaning the domain of the data of the type obtained by Fourier transforms of the time series data) based on the impedance, and the integrated response function derived from the governing equations of the system The hydrodynamic pressure time series is calculated, and the interpretation process of the objective function minimizing the hydraulic time series reaction By applying the diagnostic algorithm using the genetic algorithm, the system design can be performed by searching the optimized environment variables of the irrigation system, thereby preventing the over-design of the system for controlling the irrigation pressure, and at the same time, The purpose of this paper is to provide a surge control method for irrigation by optimizing the new type of pipe source and control structure.

According to an aspect of the present invention for achieving the above-mentioned object, the present invention provides a water treatment apparatus comprising: a water storage tank (10) in which a predetermined kind of fluid is accommodated; A conduit (20) for transferring the fluid of the water storage tank (10) for transfer; A main valve (30) installed at a set point of the channel (20); A water hammer pressure control structure (40) installed at a pipe line located between the water tank (10) and the main valve (30) and performing a water hammer pressure damping function; And a loop pipe (50) connecting a channel portion located on the front side of the hydrodynamic pressure control structure (40) and a channel portion located on the rear side of the hydrodynamic pressure control structure (40) An irrigation system with a control structure is provided.

In the water pipe system having the loop pipe-type water hammer pressure control structure according to the present invention, the pipeline 20 includes a first tubular unit 1 connected to the water storage tank 10 and receiving the fluid of the water storage tank 10; A second tubular unit (2) on which a hydrostatic pressure control structure (40) is installed; And the fourth tubular unit 4 connected to the main valve 30 is connected in series. The loop tube 50 is connected to the first tubular unit 1 and the fourth tubular unit 4, And a third tubular unit (3) arranged in parallel with the two tubular unit (2).

According to another aspect of the present invention, there is provided an apparatus for measuring a fluid of a predetermined type, comprising: a reservoir for receiving a predetermined kind of fluid; a conduit for transferring the fluid of the reservoir; A water hammer pressure control structure 40 provided at a pipe line located between the water tank 10 and the main valve 30 and performing a water hammer pressure damping function, (50) for connecting a pipeline part located on the front side of the water pressure control structure (40) and a pipeline part located on the rear side of the water hammer pressure control structure (40) to the irrigation water system Wow; A governing equation input step in which the governing equation governing the fluid flow of the irrigation system 100 is input to the analyzer 200; A hydraulic pressure reaction induction input step of inputting the hydraulic reaction induction formula in the frequency domain of the governing equations (term of time series data means a region of data of the type obtained through Fourier transform) and input to the analyzer 200; The solution of the governing equations is derived by inputting the initial values and the boundary conditions for the governing equations to the analyzer 200 and the hydraulic pressure time series is calculated by inputting the solution of the governing equations to the hydraulic reaction induction equation, A hydrodynamic pressure time series calculation step in which a steady state hydraulic pressure time series given with a steady state boundary condition, an initial value of a hydrodynamic pressure generating state, and a hydrodynamic pressure time series given a hydrodynamic pressure generating boundary condition are respectively calculated; The steady state hydraulic pressure time series and the hydrodynamic pressure hydraulic time series are calculated in the analyzer 200 respectively while the numerical values of the environmental parameters of the irrigation system including the governing equation and the hydraulic pressure response induction equation are given differently and the normal state hydraulic pressure time series and the hydrostatic pressure hydraulic time series The environmental variable whose minimization of the difference integration value is searched for is determined by determining the characteristic value of the corresponding component of the irrigation system 100 according to the optimum numerical value of the environment variable including the optimum numerical value searching step, And a control system for controlling the surge of water by optimizing the pipe structure and the control structure.

In the surge control method according to the present invention, the governing equations are input by the analytical device 200 in the form of Equations (1) and (2) .

[Equation 1]

Figure 112017007193316-pat00024

(where x is the position value in the x direction, t is the time value, V is the average flow velocity, H is the hydraulic pressure head, g is the gravitational acceleration,

Figure 112017056876600-pat00047
. f is the coefficient of friction of Darcy Weisbach, D is the diameter of the channel)

&Quot; (2) "

Figure 112017007193316-pat00026

(a is the propagation speed of the pressure wave)

In the water supply surge control method according to the present invention, the impedance Z 1 and Z 2 in the downstream single loop pipe 50 are expressed by the following equations (3) and And the relation of the transfer function to Z 1 and Z 2 is substituted into the analysis device 200 in the form of the equation (4), and the response of the water pressure to the flow rate impulse at the main valve 30 impedance as Z valve is defined as a ratio (H valve / Q valve) of the complex hydraulic (H valve) and flow rate (Q valve) is integrated response function is calculated in the form of an equation 5 to be input to the analyzer 200 And the Z valve of Equation (5) is replaced by the impedance of the set point of the water supply system (100), so that the hydraulic reaction induction formula for the operation of the main valve (30) is calculated.

&Quot; (3) "

Figure 112017007193316-pat00027

(H 2 is the hydrodynamic response of complex form at the downstream single-loop point)

&Quot; (4) "

Figure 112017007193316-pat00028

(Z c4 fourth repair impedance, Q 3 of the tube body unit 4 is a complex flow at the upstream end loop pipe 50 branch, Q 2l2 is a second complex flow rate, Q 2l3 in the tube unit 2 is the L 4 is the length of the fourth tubular unit 4, and? 4 is the propagation coefficient of the fourth tubular unit 4)

&Quot; (5) "

Figure 112017007193316-pat00029

(r h, v is the impedance response function at the valve point, and ω is the frequency)

In the surge control method according to the present invention, the optimum numerical value searching step of the environment variable includes an objective function that minimizes the transient response of the water pressure time series to the environmental variable of the irrigation system (6), and input to the analyzer (200), the optimum numerical value of the environment variable in which the steady-state hydraulic pressure time series and the hydrostatic pressure time series differential value are minimized is searched.

&Quot; (6) "

Figure 112017007193316-pat00030

(h i is the calculated hydrodynamic pressure time series, h s is the steady state hydraulic pressure time series)

In the surge control method according to the present invention, the optimal numerical value searching step of the environment variable includes a diagnostic algorithm using a genetic algorithm that repeatedly executes an evolutionary operation starting from a random number candidate value (300) is set in the analyzer (200) so that the diagnostic algorithm (300) searches for the optimal numerical value of the environmental variable including the transfer coefficient and the impedance characteristic value.

According to the present invention, it is possible to minimize the construction cost of the system for the control of the water hammer pressure and to increase the water hammer pressure reduction efficiency by providing the water hammer pressure control structure with the loop tube. It is effective.

In addition, according to the present invention, by optimizing the pipe source and the control structure, the surge control method of the irrigation water system searches the optimized environment variable of the irrigation system, so that the over- And at the same time, the water hammer attenuation efficiency is further increased.

FIG. 1 is a view showing a water supply system having a conventional water pressure control structure; FIG.
FIG. 2 is a view showing an irrigation system having a loop pipe-type water pressure control structure according to an embodiment of the present invention; FIG.
FIG. 3 is a sequence block diagram illustrating an irrigation surge control method according to an embodiment of the present invention by optimization of a tube source and a control structure; FIG.
FIG. 4 is a graph showing the results of the surge control in the irrigation-water surge control method according to the embodiment of the present invention,
FIG. 5 is a view for showing an analysis structure of an analysis device in a surge control method according to an embodiment of the present invention by optimization of a pipe source and a control structure. FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings 1 to 5. On the other hand, in the drawings and the detailed description, it can be easily understood by the workers in this field from the system such as the irrigation system, the water tank, the pipe, the valve, the water hammer pressure control structure, the roof pipe, the system governing equations, the partial differential equation analysis, And actions are omitted or simplified. In the drawings and specification, there are shown in the drawings and will not be described in detail, and only the technical features related to the present invention are shown or described only briefly. Respectively.

2, the water pipe system 100 including the loop pipe-type water pump control structure according to the present invention includes a water storage tank 10 in which a set type of fluid is received, a water storage tank 10 in which the fluid in the water storage tank 10 is received A main valve 30 installed at a set point of the pipeline 20 and a water hammer pressure sensor 30 installed at a pipeline portion located between the water reservoir 10 and the main valve 30, And a loop pipe 50 connecting a conduit portion located on the front side of the control structure 40 and the thigh pressure control structure 40 to a conduit portion located on the rear side of the thigh pressure control structure 40.

The pipeline 20 according to the embodiment of the present invention includes a first tubular unit 1 connected to the reservoir 10 and receiving fluid from the reservoir 10, A unit 2 and a fourth tubular unit 4 connected to the main valve 30 are connected in series. The loop tube 50 according to the embodiment of the present invention includes a third tubular unit 3 connected to the first tubular unit 1 and the fourth tubular unit 4 and arranged in parallel with the second tubular unit 2, Lt; / RTI >

The irrigation water system 100 having the above-described structure according to the present invention includes a water hammer pressure control structure (not shown) installed at a channel located between the water storage tank 10 and the main valve 30, The loop tube 50 having a simple structure for connecting the front side pipeline portion and the rear side pipeline portion is provided additionally with the loop pipe 50 interposed therebetween so as to add the water hammer pressure reduction effect by the loop tube 50, The system construction cost for pressure control is minimized, and the water hammer pressure reduction efficiency is increased.

As shown in FIG. 3, the water supply surge control method according to an embodiment of the present invention, which is based on the optimization of the pipe source and the control structure, includes a system configuration step, a governing equation input step, a hydraulic pressure reaction- Environment variables are performed through an optimal numerical value search step.

The system configuration step includes a water storage tank 10 in which a predetermined type of fluid is received, a pipe 20 for transferring the fluid in the water storage tank 10 to transfer the fluid, a main valve 30 installed at a set point of the pipe 20, A water hammer pressure control structure 40 installed at a channel between the water tank 10 and the main valve 30 to perform a water hammer pressure damping function and a water hammer pressure control structure 40 disposed between the water tank 10 and the main valve 30, And a loop pipe 50 connecting a portion of the conduit located on the rear side of the control structure 40 to the irrigation system 100. As the irrigation system 100, a irrigation system 100 including a loop pipe-type irrigation pressure control structure according to an embodiment of the present invention can be applied.

The governing equation input step is a step in which the governing equation governing the fluid flow of the irrigation system 100 is input to the analyzer 200. In the governing equation input step according to the embodiment of the present invention, the one-dimensional partial differential continuous equation of Equations (1) and (2) and the governing equation in the form of momentum equations are inputted to the analyzer 200.

Figure 112017007193316-pat00031

(where x is the position value in the x direction, t is the time value, V is the average flow velocity, H is the hydraulic pressure head, g is the gravitational acceleration,

Figure 112017056876600-pat00048
. f is the coefficient of friction of Darcy Weisbach, D is the diameter of the channel)

Figure 112017007193316-pat00033

(a is the propagation speed of the pressure wave)

The hydraulic reaction induction input step is a step input to the analyzer 200 in which the hydraulic pressure response induction formula is set in the frequency region of the governing equation (term indicating time domain data obtained by Fourier transformation). The hydraulic reaction induction type input step according to the embodiment of the present invention is such that the impedances Z 1 and Z 2 in the downstream single loop tube 50 are expressed by the formulas (3) and (4) To be input to the analysis apparatus 200.
Additionally, while the reaction of the impedance Z valve of the pressure defined as the ratio (H valve / Q valve) of the complex hydraulic (H valve) and flow rate (Q valve) integrated response function for a flow impulse of the main valve 30. [Mathematical Is calculated in the form of equation (5) and input to the analysis apparatus (200). And the Z valve of Equation (5) is replaced by the impedance of the set point of the irrigation system (100), so that the hydraulic reaction induction formula for the operation of the main valve (30) is calculated. In this way, the water pressure and the flow rate can be derived from the governing equation of the system by the irrigation system described in the frequency domain (meaning the domain of the data of the form obtained through the Fourier transform) based on the impedance. The type and size of the water hammer pressure control structure 40 and the change effect on the water pressure fluctuation of the loop tube 50 can be secured in a time-series manner through the integration reaction function expressed by Equation (5).

Figure 112017007193316-pat00034

(H 2 is the hydrodynamic response of complex form at the downstream single-loop point)

Figure 112017007193316-pat00035

(Z c4 fourth repair impedance, Q 3 of the tube body unit 4 is a complex flow at the upstream end loop pipe 50 branch, Q 2l2 is a second complex flow rate, Q 2l3 in the tube unit 2 is the L 4 is the length of the fourth tubular unit 4, and? 4 is the propagation coefficient of the fourth tubular unit 4)

Figure 112017007193316-pat00036

(r h, v is the impedance response function at the valve point, and ω is the frequency)

In the hydrodynamic time series calculation step, the initial value and the boundary condition for the governing equations are input to the analyzer 200, and the solution of the governing equations is derived, and the hydrodynamic time series is calculated by inputting the solution of the governing equations to the hydraulic reaction induction equation .
Here, the hydraulic pressure time series calculation step according to an embodiment of the present invention includes a steady-state hydraulic pressure time series, a steady state initial value, a steady-state initial value and a hydrodynamic pressure time series Respectively.
The optimum numerical value searching step of the environmental variable is computed by the analyzer 200 in the normal state hydraulic pressure time series and the hydrodynamic pressure hydraulic time series with different numerical values of the environmental parameters of the irrigation system including the governing equation and the hydraulic reaction induction equation, The steady state hydraulic pressure time series and the hydrodynamic pressure time series difference value are minimized. In this step, the optimum numerical value is searched. (Here, the environmental variable means the length and the resource of the loop pipe, To participate)
In the step of searching for the optimum numerical value of the environment variable according to the embodiment of the present invention, the objective function for minimizing the transient response of the water hammer pressure time series to the environmental variable of the irrigation system is calculated in the form of Equation (6) , The optimum numerical value of the environment variable in which the steady-state hydraulic pressure time series and the hydrodynamic pressure time series difference integration value are minimized is searched.

Figure 112017007193316-pat00037

delete

(h i is the calculated hydrodynamic pressure time series, h s is the steady state hydraulic pressure time series)

In particular, in the step of searching for the optimum numerical value of the environment variable according to the embodiment of the present invention, the diagnostic algorithm 300 using the genetic algorithm that repeatedly performs the evolutionary operation starting from an arbitrary random number candidate value, So that the optimal numerical value of the environment variable including the propagation coefficient and the impedance characteristic value is searched by the diagnostic algorithm 300.

According to the embodiment of the present invention constructed as described above, the water supply surge control method by optimization of the pipe source and the control structure includes a frequency domain based on the impedance (a term indicating a region of data of a form obtained through Fourier transform of time series data The hydraulic pressure time series is calculated from the integrated reaction function derived from the governing equation of the system 100 and the diagnostic algorithm 300 using the genetic algorithm in the process of solving the objective function minimizing the hydraulic time series reaction The system design is performed while the optimized environment variable of the irrigation system 100 is searched. Therefore, over-designing of the system for controlling the irrigation pressure is prevented, and the water hammer pressure reduction efficiency is further increased.

Although the present invention has been described with reference to the above description and drawings, it is to be understood that the present invention is not limited to the described embodiments and various changes and modifications may be made therein without departing from the scope of the invention as defined in the appended claims. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit of the present invention.

1: first tubular unit 2: second tubular unit
3: Third tubular unit 4: Fourth tubular unit
10: water tank 20: channel
30: Main valve 40: Hydrodynamic pressure control structure
50: Loop tube 100: Irrigation system
200: Analyzing device 300: Diagnostic algorithm

Claims (6)

delete delete A main valve 30 installed at a set point of the pipeline 20, a water tank 10, and a main tank 20 installed at a set point of the pipeline 20, A water hammer pressure control structure 40 installed at a channel between the valve 30 and performing a water hammer pressure damping function and a water hammer pressure control structure 40 disposed at the rear of the water hammer pressure control structure 40, And a loop pipe (50) connecting the pipeline parts located on the side of the pipeline system (100);
A governing equation input step in which the governing equation governing the fluid flow of the irrigation system 100 is input to the analyzer 200;
A hydraulic pressure reaction induction input step of inputting the hydraulic reaction induction formula in the frequency domain of the governing equations (term of time series data means a region of data of the type obtained through Fourier transform) and input to the analyzer 200;
The solution of the governing equations is derived by inputting the initial values and the boundary conditions for the governing equations to the analyzer 200 and the hydraulic pressure time series is calculated by inputting the solution of the governing equations to the hydraulic reaction induction equation, A hydrodynamic pressure time series calculation step in which a steady state hydraulic pressure time series given with a steady state boundary condition, an initial value of a hydrodynamic pressure generating state, and a hydrodynamic pressure time series given a hydrodynamic pressure generating boundary condition are respectively calculated;
The steady state hydraulic pressure time series and the hydrodynamic pressure hydraulic time series are calculated in the analyzer 200 respectively while the numerical values of the environmental parameters of the irrigation system included in the governing equation and the hydraulic pressure response derivation are given differently, Time series difference Environment variable minimizing integration value Environment variable in which an optimal numerical value is searched Including an optimal numerical value search step,
Characterized in that the characteristic value of the corresponding component of the system (100) is determined according to the optimum numerical value of the environmental variable so that the surge is minimized to the irrigation water.
The method of claim 3,
The pipeline 20 is connected to the water tub 10 to receive the fluid from the water reservoir 10 and to the water pipe control structure 40 and to the first tubular unit 1 And a fourth tubular unit (4) connected to the second tubular unit and connected to the main valve (30) are connected in series, and the second tubular unit (2)
The loop tube 50 is composed of a first tubular unit 1 and a third tubular unit 3 connected to the fourth tubular unit 4 and arranged in parallel with the second tubular unit 2,
The hydraulic reaction induction type input step allows the impedance Z 1 and Z 2 at the downstream end of the loop tube 50 to be input to the analyzer 200 in the form of Equations (3) and (4) as the reaction of the impedance Z valve of the water pressure for the flow rate of the impulse of the main valve 30 is defined as a ratio (H valve / Q valve) of the complex hydraulic (H valve) and flow rate (Q valve) is integrated response function formula The Z valve of Equation (5) is replaced by the impedance of the set point of the irrigation water system (100), and the water pressure for the operation of the main valve (30) And the reaction induction formula is calculated. The method of controlling surge of water by the optimization of the pipe source and the control structure.
&Quot; (3) "
Figure 112017087113204-pat00038

(H 2 is a complex water pressure reaction at the downstream end of the loop tube)
&Quot; (4) "
Figure 112017087113204-pat00039

(Z c4 is the repair impedance of the fourth tubular unit 4, Z 2 is H 2 / Q 2 , where H 2 is the second tubular unit 2 , which is the downstream end of the roof tub 50, 3) and a fourth pressure at the junction of the tube unit (4), Q 2 is the sum of Q 2l2 and Q 2l3, Q 2l2 is a complex flow rate, Q 2l3 in accordance with the second tube unit (2) is a third tube unit (4) is the complex water flow rate in the first tubular unit (3), l 4 is the length of the fourth tubular unit (4), and? 4 is the propagation coefficient of the fourth tubular unit
&Quot; (5) "
Figure 112017087113204-pat00040

(r h, v is the impedance response function at the valve point, and ω is the frequency) The method of claim 3,
In the step of searching for the optimum numerical value of the environment variable, an objective function for minimizing the transient response of the water hammer pressure time series to the environmental variable of the irrigation water system is calculated in the form of Equation (6) Wherein the optimal numerical value of the environment variable minimizing the difference between the time series and the hydrodynamic pressure time series is minimized.
&Quot; (6) "
Figure 112017007193316-pat00041

(h i is the calculated hydrodynamic pressure time series, h s is the steady state hydraulic pressure time series) The method of claim 3,
In the step of searching for the optimum numerical value of the environment variable, a diagnostic algorithm 300 to which a genetic algorithm for repeatedly performing an evolutionary operation starting with a random number candidate value is set is set in the analysis apparatus 200, Wherein the optimal numerical value of the environmental variable including the coefficient and the impedance characteristic value is searched for.
KR1020150116930A 2015-08-19 2015-08-19 Pipeline system with structure controlling water hammering pressure by looped pipe and pressure surge control method through optimization of pipeline dimensions and hydraulic structure for a looped pipeline system equipped with a surge arrest device KR101815192B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150116930A KR101815192B1 (en) 2015-08-19 2015-08-19 Pipeline system with structure controlling water hammering pressure by looped pipe and pressure surge control method through optimization of pipeline dimensions and hydraulic structure for a looped pipeline system equipped with a surge arrest device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150116930A KR101815192B1 (en) 2015-08-19 2015-08-19 Pipeline system with structure controlling water hammering pressure by looped pipe and pressure surge control method through optimization of pipeline dimensions and hydraulic structure for a looped pipeline system equipped with a surge arrest device

Publications (2)

Publication Number Publication Date
KR20170022212A KR20170022212A (en) 2017-03-02
KR101815192B1 true KR101815192B1 (en) 2018-02-21

Family

ID=58426928

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150116930A KR101815192B1 (en) 2015-08-19 2015-08-19 Pipeline system with structure controlling water hammering pressure by looped pipe and pressure surge control method through optimization of pipeline dimensions and hydraulic structure for a looped pipeline system equipped with a surge arrest device

Country Status (1)

Country Link
KR (1) KR101815192B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114112176B (en) * 2021-11-10 2023-09-22 中国航发沈阳发动机研究所 Design method of external pipeline connected with surge pressure difference or pressure sensor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100868908B1 (en) * 2007-11-06 2008-11-14 양재구 Water hammer preventing system
JP2012179165A (en) * 2011-02-28 2012-09-20 Mitsubishi Heavy Ind Ltd Fluid conduit opening speed restriction valve, and fire extinguishing device and ship using the same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100742398B1 (en) 2006-02-17 2007-07-24 양철수 Water hammer sensing and control method for water hammer preventive system
KR101198878B1 (en) 2012-05-15 2012-11-07 (주)에스엠테크 Water hammer sensing and water preventive system for energy saving and it's control process

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100868908B1 (en) * 2007-11-06 2008-11-14 양재구 Water hammer preventing system
JP2012179165A (en) * 2011-02-28 2012-09-20 Mitsubishi Heavy Ind Ltd Fluid conduit opening speed restriction valve, and fire extinguishing device and ship using the same

Also Published As

Publication number Publication date
KR20170022212A (en) 2017-03-02

Similar Documents

Publication Publication Date Title
KR101815192B1 (en) Pipeline system with structure controlling water hammering pressure by looped pipe and pressure surge control method through optimization of pipeline dimensions and hydraulic structure for a looped pipeline system equipped with a surge arrest device
Hur et al. Water hammer analysis that uses the impulse response method for a reservoir-pump pipeline system
EL-Turki et al. Modeling of hydraulic transients in closed conduits
KR101577733B1 (en) Diagnosis system for checking a clogging in a pipeline using acoustic transfer matrix
Streeter et al. Waterhammer and surge control
M GAD et al. Impact of pipes networks simplification on water hammer phenomenon
CN105512405A (en) Optimized design method for diameter of MPC ejector nozzle
Mery et al. Water hammer mitigation by air vessel and bypass forward configuration
Lamaddalena et al. A new indicator for unsteady flow analysis in pressurized irrigation systems
Siddiqui et al. Numerical analysis and parametric optimization of surge protection devices in a long up-pumping water pipeline
Abdel-Fatah et al. Model and protected design of water piping system to minimize the water hammer effect
Ammar et al. Water hammer analysis for Khobar–Dammam water transmission ring line
Li et al. Impedance analysis and clamp locations optimization of hydraulic pipeline system in aircraft
Wan et al. Investigation of partially expanded surge tank with self-adaptive auxiliary system controlling water hammer in pipelines
El-Hazek et al. Transient flow simulation, analysis and protection of pipeline systems
Ali et al. Studying Of Water Hammer In Water Supply Pipes Network With Different Abnormal Operation Conditions (Case Study-Assiut City Network)
Liu et al. BLOCKAGES DETECTION TECHNOLOGY FOR OIL PIPELINE.
Iancu et al. Aspects of Water Hammer Design and Protection Measures Modeling in a Water Supply Adduction
Khoshfetrat et al. Investigation of transient flow field data in water transmission mains using Bentley Hammer software (Case Study)
Jalut et al. Surge Tank Analysis for Water Hammer Remedy for Long Distance Pipeline
Akiyoshi et al. Self-excited Pressure Vibration in the Low-Pressure Pipeline Using an Automatic Pressure-reducing Valve (II)-Prediction of Occurrence of Self-excited Pressure Vibration Based on a Period of Water Pressure Oscillation in a Closed Conduit
El-Hazek Hydro pneumatic tank design for surge protection of irrigation pipeline systems
Bayle Modelling of transient pressure waves in water distribution networks
Zhang et al. Dual-objective optimization strategy of self-adaptive transient pressure controller in water delivery engineering
Rasheed et al. Surge Tank Analysis for Water Hammer Remedy for Long Distance Pipeline

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
AMND Amendment
E601 Decision to refuse application
AMND Amendment
E902 Notification of reason for refusal
AMND Amendment
X701 Decision to grant (after re-examination)