# System for determining parameters of reliability and regular supply of water supply and water discharge networks

FIELD: measurement equipment.

SUBSTANCE: invention relates to a municipal water pipeline and sewerage system and is designed for determination of parameters of reliability and regular supply of water supply and water discharge networks. A system for determining parameters of reliability and regular safety of water supply and water discharge networks includes a unit of primary information processing, a calculation unit of reliability parameters of network components, a unit for determining probabilistic reliability parameters of the network, a unit for determining technological reliability parameters of the water discharge network, which is provided with a network modelling cell having a possibility of determining flow rate of emergency discharge q_{jmod} of water discharge networks at deactivation of j section of the network.

EFFECT: improvement of efficient determination of parameters of reliability and regular supply of water supply and water discharge networks.

30 cl, 3 dwg

The invention relates to the field of urban water supply and sanitation, and is intended to determine the reliability and continuity of water supply and sanitation in accordance with the requirements of No. 416-FZ "On water supply and sanitation".

Known method of decomposition and reduction of the sewer network, designed to determine the relative volume of raw sewage discharged to the surface due to random failures of individual sections. The technique is reduced to the formal replacement of one fictitious equivalent channel, the reliability parameters of which are calculated from the known failure rates of rebounds and plots (see Ermolin J. A., Alekseev M. I. Method of decomposition and reduction of sewer networks Water supply and San. technique. 2012. No. 11).

Method of decomposition and reduction has the following disadvantages:

1. Limited scope because it:

- allows you to calculate only one indicator - the ratio of the flow rate allowed by the network. It does not allow to determine the probabilistic reliability indices, such as continuity, which in accordance with the Federal law of 07.12.2011 № 416-FZ "On water supply and sanitation" are targets of organizations;

- not p�adequate to assess the effectiveness of the device jumpers between the separate sites because developed to calculate network security only "tree" configuration. However, this method of improving the reliability of well-known and widely used in practice, for example, ring a tunnel header along the river Fontanka in St. Petersburg;

- does not allow to calculate the security flow rate allowed by the network in the partially-operational state, i.e., when the failure of individual sections of the network.

2. High accuracy, because in it, for the purpose of simplification introduced a number of assumptions, significantly lowered the accuracy of the calculations.

The closest analogue to the claimed invention is a Device for reliability analysis of pipelines municipal Sewerage network," taken as a prototype, is equipped with a primary unit of information processing, the block of collecting and processing information on the structural damage and the block of collecting and processing information about the functional pipeline, the inputs connected to the outputs of block filtering options for selecting potential sites for rehabilitation, and the outputs to the inputs of the block of ranking potential sites for the rehabilitation, the filter blocks the reliability parameters, the filtering parameters to select potential sites for the rehabilitation, ranking potential sites for the rehabilitation of sequentially interconnected, and the blocks ranking criterion� accidents, filtering and analysis of primary information and queries on the operation, selection of potential sites for the rehabilitation of inputs connected in parallel to the outputs of the primary unit of information processing, and outputs to the inputs of the filtration unit of the reliability parameters for which input is also connected to the outputs of the unit of collection and accumulation of information about the accidents of pipelines and gathering information for the inventory. The block of collecting and processing information about structural damage to pipelines made in the form of parallel-connected to the input of the block of cells of collecting and processing information on cracks, failure modes, corrosion deposits, and abrasive wear, the outputs of which are connected to the output of the block. Also block functional changes of pipelines made in the form connected in parallel to the input of the block of cells of collecting and processing information on the availability of offset pipes, on the subsidence of the tray, about violations of the original shape of the pipe, the presence of sediment and boopathi, outputs connected to the output of the unit (see RF patent №2237784 (priority from 25.03.2003) "Device for reliability analysis of pipelines municipal Sewerage network").

Device for analysis of pipeline integrity management urban drainage network has a limited field of application, because it's designed only for zboray analysis of the reliability of pipelines and cannot be applied to assess the reliability of the entire network, because:

- not possible to determine the probabilistic reliability of the entire network in the form of the probability of the network at time t in a healthy state in the absence of failures it plots the probability of finding the network in the partially-operational state (not being a network failure) when the j-th site at time t in a state of refusal, etc.;

- does not identify a technological indicator of the reliability of the entire network in the form of a volume of water distribution network for the billing period of operation t if it is in working condition, etc.;

- does not identify a technological indicator of the reliability of the entire network wastewater volume in the form of emergency discharge of untreated sewage due to accidents and obstructions of the j-th plot, etc.;

- not possible to determine the technological parameters the reliability of the Sewerage network in the form of emergency discharge of untreated sewage due to accidents and obstructions of the j-th phase, the volume of the water distribution network for the billing operation period t when it is in partially working condition in the conditions when the network configuration allows you to change the flow distribution due to accidents and obstructions of the j-th plot.

For this reason, the use of the device to determine one of the targets of the activities of organizations engaged in videoteen�e (the reliability and continuity of drainage, in accordance with the requirement of article 39 No. 416-FZ "On water supply and sanitation") is not possible, because it can only determine a single reliability of pipes and sections, not the whole system.

The object of the present invention is to expand the field of application of the device.

The task is solved so that in the known device, containing, the primary unit of information processing, in accordance with the present invention, the primary unit of information processing is executed in the form attached in parallel to the input unit, at least, cells enter information on the number of sites n, the lengths of the parts of l_{j}the diameters of sections D_{j}cost of plots of q_{j}network, where 0<j≤n, the length of the calculation period t, the reliability of the wells, the reliability of pipes or pipe materials, the outputs of which are connected to the output of the block.

In addition, the system is further provided with:

- the block of calculation of parameters of reliability of network elements, made in the form in the form attached to the parallel input of the block of cells for the calculation of indicators of reliability of pipes, calculation of the intensity off plots, calculation of the intensities of repair stations, calculation of complex indicators of maintainability sections whose outputs are connected to the output b�of an eye, in this case, the output cells of calculating the reliability of the pipes is connected to the input of the cell of the calculation of the intensities of the disconnected sections, and outputs the cells of the calculation of the intensities of the plots and repair the cells of the calculation of the intensities disable sections are connected to the input of the cell of the calculation of complex indicators of maintainability sites;

- the block of determining the probabilistic reliability of the network, in the form attached to the parallel input of the block of cells calculate the probability of the j-th site at time t in the failed state, calculate the probability of the network at time t in a healthy state, calculate the probability of the network at time t in the partially-operational state, the outputs of which are connected to the output of the block.

Thus, the output of the primary processing device is connected to the input block of calculation of parameters of reliability of network elements, the output of the block of calculation of parameters of reliability of network elements connected to the input unit of determining the probabilistic reliability of the network.

There are variants of development when:

1. The system is further provided with a block determine the technological reliability of the Sewerage network, in the form attached to the parallel input of the block of cells calculate the volume of emergency discharge of untreated wastewater from ava�rd and chocking the j-th plot, calculate the volume of water distribution network for the billing period of operation t if it is in working condition, calculate the volume of water distribution network for the billing operation period t when it is in partially working condition, calculate the volume of emergency discharge of untreated sewage due to accidents and obstructions for the billing operation period t, the outputs of which are connected to the output unit, the output of the primary processing device is connected to the input of the block definition of the technological parameters of reliability of the Sewerage network, the output of the block definition of the probabilistic reliability of the network connected to the input of the unit determine the technological reliability of the wastewater network.

2. Cell calculation of indicators of reliability of pipes is arranged to determine the failure rate of asbestos-cement pipes of the Sewerage networks by the formula

where λ_{j}- the failure rate of pipes j-th phase, 1/(year·km); D_{j}- the diameter of the pipes j-th plot, m;

3. Cell calculation of indicators of reliability of pipes is arranged to determine the intensity� failure of cast iron pipes of the Sewerage networks by the formula

4. Cell calculation of indicators of reliability of pipes is arranged to determine the failure rate of ceramic pipes of the Sewerage networks by the formula

5. Cell calculation of indicators of reliability of pipes is arranged to determine the failure rate of concrete networks of pipes according to the formula

6. Cell calculation of indicators of reliability of pipes is arranged to determine the failure rate of plastic pipes of the Sewerage networks by the formula

7. Cell calculation until�ers secure pipes is arranged to determine the intensity of asbestos cement pipes clogging of the Sewerage networks by the formula

where λ_{j}the intensity of the clogging of pipes j-th phase, 1/(year·km);

8. Cell calculation of indicators of reliability of pipes made with the possibility of determining the intensity of clogging cast iron pipes of the Sewerage networks by the formula

9. Cell calculation of indicators of reliability of pipes made with the possibility of determining the intensity of clogging of the ceramic pipes of the Sewerage networks by the formula

10. Cell calculation of indicators of reliability of pipes made with the possibility of determining the intensity of clogging of concrete pipes of the Sewerage networks by the formula

11. Cell calculation of indicators of reliability of pipes made with the possibility of determining the intensity of clogging of the plastic pipes of the Sewerage networks by the formula

12. Cell calculation of indicators of reliability of pipes is arranged to determine the length of the pipe repair by the formula

t_{j}=(8760/(8760/(485·0,001·D_{j}-504·(0,001·D_{j})^{2}-27)),

where t_{j}- the duration of the repair of pipes j-th plot, h; D_{j}- the diameter of the pipes j-th section, mm;

13. Cell calculation of the intensities disable plots made with the possibility of determining the intensity of off plots by the formula

where λ_{j}the intensity off of the j-th �share network
1/year; λ_{j}- the failure rate of pipes j-th phase, 1/(year·km); l_{j}- the length of the j-th plot, λ_{K}- the failure rate of wells, 1/year; k_{1}, ·*a*_{1}- calibration coefficients; t - time, h;

14. Cell calculation of the intensities disable plots made with the possibility of determining the intensity of disabling sections of the Sewerage networks by the formula

,

where k_{2}, ·*a*_{2}- calibration coefficients; t - time, h;

15. Cell calculation of the intensities disable plots made with the possibility of determining the intensity of disabling sections of the Sewerage networks by the formula

,

where k_{3}, ·*a*_{3}- calibration coefficients; t - time, h;

16. Cell calculation of the intensities disable plots made with the possibility of determining the intensity of off plots by the formula

17. Cell calculation of the intensities of the repair sections made with the possibility of determining the intensity of repair parcel by the following formula:

µ_{academic j}=8760/(485·0,001�D_{
j}-504·(0,001·D_{j})^{2}-27),

where µ_{academic j}- the intensity of repair of the j-th network area, 1/year; D_{j}- the diameter of the pipes j-th section, mm;

18. Cell calculation of complex indicators of maintainability of the plots made with the possibility of defining complex indices of maintainability of the plots by the formula

γ_{academic j}(t)=λ_{academic j}(t)/µ_{academic j};

19. Cell calculation of complex indicators of maintainability of the plots made with the possibility of defining complex indices of maintainability of the plots by the formula

γ_{academic j}=λ_{academic j}/µ_{academic j};

20. Cell calculate the probability of the j-th site at time t in a state of denial is arranged to determine the probability of the j-th site at time t in the case of failure by the formula

,

where K_{aj}(t) is the probability of the j-th site at time t in a state of failure;

21. Cell calculate the probability of the network at time t in a healthy state is arranged to determine the probability of the network at time t in a healthy state according to the formula

where

22. Cell calculate the probability of the network at time t in the partially - operational state configured to determine the probability of the network at time t in the partially-operational state according to the formula

where K_{CHN}(t) is the probability of the network at time t in the partially-operational state;

23. Cell calculate the volume of emergency discharge of untreated sewage due to accidents and obstructions of the j-th section is arranged to determine the amount of emergency discharge of untreated sewage due to accidents and obstructions of the j-th phase of the Sewerage networks by the formula

where V_{j}(t) - emergency discharge of untreated sewage due to accidents and obstructions of the j-th plot, m^{3}; q_{j}- the consumption of the j-th section of the network, m^{3}/C;

24. Block determine the technological reliability of the Sewerage network, is further provided with a cell network modeling, configured to determine flow alarm reset q_{jmod}drainage systems when disconnecting the j-th section of the network connected to the input unit, the output of which is connected to the inputs of the cell to calculate the volume of emergency discharge of untreated sewage due to accidents and obstructions of the j-th plot, calculate the volume of water distribution network for the billing operation period t when it is in partially working condition.

25. Cell calculate the volume of emergency discharge of untreated sewage due to accidents and obstructions of the j-th section is arranged to determine the amount of emergency discharge of untreated sewage due to accidents and obstructions of the j-th area networks Vodootvodny the formula

where V_{j}(t) - emergency discharge of untreated sewage due to accidents and obstructions of the j-th plot, m^{3}; q_{jmod}- flow alarm reset when you disconnect the j-th plot with�ti,
some in-cell simulation, m^{3}/C; γ_{academic j}(t) is the complex index of maintainability of the j-th section of the network.

26. Cell calculate the volume of water distribution network for the billing operation period t when it is in a healthy state is arranged to determine the volume of water discharged to the wastewater network for the billing period of operation t if it is in working condition according to the formula

where V_{c}(t) is the amount allocated by the network for the billing period of operation t if it is in working condition, m^{3}; q_{c}- consumption of the network, m^{3}/with a; q_{c}=q_{n};

27. Cell calculate the volume of water distribution network for the billing operation period t when it is in partially working condition made with the ability to determine the volume of water discharged to the wastewater network for the billing operation period t when it is in partially working condition according to the formula

where V_{j}(t) is the amount allocated by the network for the billing operation period t when it is in partially working condition, m^{3}; q_{cj}- flow rate allowed by the network when you disable the j-th section of the network, q_{cj}=q_{c}-q_{jmod}, m^{3}/C;

28. Cell calculate the volume of emergency discharge of untreated sewage due to accidents and obstructions for the billing period of operation t is arranged to determine the amount of emergency discharge of untreated sewage due to accidents and obstructions to the drainage network for the billing operation period t by the formula