CN111350257A

CN111350257A - Drainage system and drainage method based on municipal road shunt pipe network

Info

Publication number: CN111350257A
Application number: CN202010203822.5A
Authority: CN
Inventors: 李习洪; 周超
Original assignee: Wuhan Shengyu Drainage Systems Co Ltd
Current assignee: Wuhan Shengyu Drainage Systems Co Ltd
Priority date: 2019-12-23
Filing date: 2020-03-20
Publication date: 2020-06-30
Also published as: CN212896713U; CN111350258A; CN212896712U

Abstract

The invention discloses a drainage system and a drainage method based on a municipal road shunt pipe network, wherein the drainage system comprises: the merging pipe is respectively connected with a sewage branch pipe and a rainwater port in the unit area along the line; the intercepting part is arranged close to or at the upstream of the access part of the sewage branch pipe access confluence pipe, and is provided with an inlet and a first outlet, the inlet is communicated with the sewage branch pipe, and the first outlet is communicated with the confluence pipe; the buffer part is communicated with the interception part through a second inlet of the interception part; the reposition of redundant personnel facility, the reposition of redundant personnel facility has import, third export and fourth export, and the import of reposition of redundant personnel facility links to each other with the confluence pipe, and third exit linkage municipal sewer pipe, fourth exit linkage municipal rainwater pipe still have the water conservancy switch of controlling third export and fourth export water respectively, and the reposition of redundant personnel facility is used for shunting dirty water to municipal sewer pipe, with clean water reposition of redundant personnel to municipal rainwater pipe.

Description

Drainage system and drainage method based on municipal road shunt pipe network

Technical Field

The invention relates to the technical field of drainage, in particular to a drainage system and a drainage method based on a municipal road shunt pipe network.

Background

Urban municipal road pipe network divide into confluence tubulation network system and reposition of redundant personnel tubulation network system, and current drainage system to municipal road reposition of redundant personnel tubulation network system is with sewage, industrial waste water and rainwater mix in same canal if directly discharge into the natural water and cause the receiving water to suffer serious pollution, if directly discharge into sewage treatment plant and handle, a large amount of cleaner rainwater when causing rainy day gets into sewage treatment plant and carries out unnecessary processing, causes the wasting of resources.

From this can know, exist among the prior art to reposition of redundant personnel tubulation net, sewage and rainwater mix together, cause when directly discharging into the natural water and receive the water and suffer serious pollution, when directly discharging into sewage treatment facility and handle, cause a large amount of cleaner rainwater when rainy day to get into sewage treatment facility and carry out unnecessary processing, cause the wasting of resources.

Disclosure of Invention

The invention aims to overcome the defects of the background technology and provides a drainage system and a drainage method based on a municipal road shunt pipe network, which have the advantages of low treatment cost and good treatment effect.

The invention provides a drainage system based on a municipal road shunt pipe network, which comprises: the merging pipe is respectively connected with a sewage branch pipe and a rainwater port in the unit area along the line; the intercepting part is arranged close to or at the upstream of an access part of the sewage branch pipe, which is accessed into the confluence pipe, and is provided with an inlet and a first outlet, the inlet is communicated with the sewage branch pipe, the first outlet is communicated with the confluence pipe, and a first water conservancy switch is arranged for controlling the water passing of the first outlet; the intercepting part is provided with a second outlet, the buffering part is connected with the second outlet, and the buffering part is used for storing sewage flowing out of the sewage branch pipe in rainy days; the reposition of redundant personnel facility, reposition of redundant personnel facility have import, third export and fourth export, and the import of reposition of redundant personnel facility links to each other with the confluence pipe, and third exit linkage municipal sewer pipe, fourth exit linkage municipal rainwater pipe, just the reposition of redundant personnel facility is located the low reaches of sewage branch pipe, inlet for stom water, the reposition of redundant personnel facility still has the water conservancy switch of controlling third export and fourth export water respectively, the reposition of redundant personnel facility be used for with dirty water reposition of redundant personnel extremely municipal sewer pipe, with clean water reposition of redundant personnel to municipal rainwater pipe.

Optionally, the method further includes: a sewage containing facility is arranged between the sewage branch pipe and the cut-off part, and an inlet of the cut-off part is connected with an outlet of the sewage containing facility; or the inlets of the interception parts of the plurality of the sewage branch pipes.

Optionally, the intercepting part is a diversion well, an intercepting well, a flow abandoning well, a buffering corridor or an installation well, the buffering part is of a tank body structure or a tank body structure with a storage space, and a water conservancy switch for controlling the second outlet to pass water is arranged at the position close to the second outlet.

Optionally, the system further comprises a control system, the control system comprises a first monitoring device and a controller, the first monitoring device is in signal connection with the controller, the first monitoring device is used for monitoring rainfall signals, and the controller is used for controlling the actions of the water conservancy switches of the first outlet, the third outlet and the fourth outlet according to the rainfall signals.

Optionally, the first monitoring device is at least one of a device for monitoring the liquid level of the water body, a device for monitoring the water quality of the water body, a device for monitoring the rainfall and a device for monitoring the total amount of the water body;

correspondingly, the rainfall signal is at least one of a water body liquid level signal, a water body water quality signal, a rainfall signal and a water body total amount signal.

Optionally, the control system further comprises a third monitoring device for monitoring the volume signal of the municipal sewer pipe.

Optionally, the control system further includes a fourth monitoring device, and the fourth monitoring device is configured to monitor rainfall intensity in the unit area.

The invention also provides a drainage system based on the municipal road shunt pipe network, wherein the municipal road shunt pipe network comprises a municipal sewage pipe and a municipal rainwater pipe; the drainage system includes: 1 confluence pipe, which is respectively connected with a plurality of sewage branch pipes and rainwater mouths in the plurality of unit areas along the line; each interception part is connected corresponding to one or a plurality of sewage branch pipes and is arranged close to an access part of the sewage branch pipe to the confluence branch pipe or the upstream of the access part, each interception part is provided with an inlet and a first outlet, the inlet is communicated with the corresponding sewage branch pipe, the first outlet is communicated with the confluence branch pipe through a first water conservancy switch, and the first water conservancy switch controls the water passing of the first outlet; the number of the buffer parts is matched with that of the plurality of the interception parts, and each buffer part is communicated with one corresponding interception part through one first outlet; the reposition of redundant personnel facility, the reposition of redundant personnel facility has import, third export and fourth export, the import of reposition of redundant personnel facility is with 1 the confluence pipe links to each other, third exit linkage municipal sewer pipe, fourth exit linkage municipal rainwater pipe, just the reposition of redundant personnel facility is located the low reaches of sewage branch pipe, rainwater mouth, the reposition of redundant personnel facility still has the water conservancy switch of controlling third export and fourth export water respectively, the reposition of redundant personnel facility be used for with dirty water reposition of redundant personnel to municipal sewer pipe, with clean water reposition of redundant personnel to municipal rainwater pipe.

The invention also provides a drainage method based on the municipal road shunt pipe network, which is suitable for any drainage system and specifically comprises the following steps: when a clear day signal is monitored, a first outlet of the intercepting part is opened, a third outlet of the shunting facility is opened, a fourth outlet is closed, and dirty water is shunted to the municipal sewage pipe through the first outlet, the confluence pipe, the shunting facility and the third outlet; monitoring a rainy day signal, closing a first outlet of the cut-off part, opening a second outlet, and storing sewage in the sewage branch pipe in the buffer part; the third outlet of the diversion facility is closed, the fourth outlet is opened, and water flowing in from the rainwater inlet is converged to the confluence pipe and is shunted to the municipal rainwater pipe through the diversion facility and the fourth outlet; the method further comprises the following steps: monitoring rainfall intensity, and setting a rainfall intensity threshold value; if a rainy day signal is monitored and the monitored rainfall intensity is lower than a rainfall intensity threshold value, the first outlet is opened, the third outlet is opened, the fourth outlet is closed, and sewage of the sewage branch pipe and rainwater of the rainwater inlet are mixed in the confluence pipe and then flow into the municipal sewage pipe through the diversion facility and the third outlet; if the rain day signal is monitored and the monitored rainfall intensity is higher than the rainfall intensity threshold value, the first outlet is closed, the third outlet is closed, the fourth outlet is opened, and the rainwater at the rainwater inlet enters the confluence pipe and flows into the municipal rainwater pipe through the diversion facility and the fourth outlet.

Optionally, the receiving capacity of the municipal sewage pipe is monitored, the receiving capacity threshold of the sewage pipe is set as a first receiving capacity threshold, the receiving capacity of the buffer part is monitored, and the receiving capacity threshold of the buffer part is set as a second receiving capacity threshold; the method comprises the following steps that (1) a rainy day signal is obtained, the monitored accommodation amount of the municipal flow merging pipe is lower than a first accommodation amount threshold value, the monitored accommodation amount of the buffering part is higher than a second accommodation amount threshold value, a first outlet of a cut-off part is opened, a third outlet of a flow splitting facility is opened, a fourth outlet is closed, and dirty water and rainwater flowing into the flow merging pipe from a rainwater inlet are mixed and then flow into a municipal sewage pipe through the flow splitting facility and the third outlet; the rainy day signal and the monitored capacity of the municipal sewage pipe are higher than a first capacity threshold value, a first outlet of the cut-off part is closed, a third outlet of the diversion facility is closed, a fourth outlet is opened, and rainwater at the rainwater inlet flows into the confluence pipe and flows into the municipal rainwater pipe through the diversion facility and the fourth outlet.

Compared with the prior art, the invention has the following advantages:

(1) according to the drainage system based on the municipal road shunt pipe network, the shunt facility is arranged on the confluence pipe, the cut-off part is arranged at the upstream of the shunt facility, the first outlet of the cut-off part is closed in rainy days, the confluence pipe is equivalent to a rainwater pipe at the moment, rainwater flowing in from a rainwater inlet is converged into the confluence pipe and flows into the municipal rainwater pipe through the shunt facility, the first outlet of the cut-off part is opened in sunny days, domestic sewage conveyed by the confluence pipe flows into the municipal sewage pipe through the shunt facility, rainwater and sewage can be shunted in a unit area, mixing of the rainwater and the sewage is avoided, the confluence pipe achieves multiple purposes, the existing pipe network system is not greatly improved, the improvement cost is low, and the application range is wide.

(2) The drainage system based on the municipal road shunt pipe network is provided with the first monitoring device, so that whether the drainage system is used in sunny days or rainy days or not is identified, the controller automatically executes the drainage system according to the set control logic, and the automation degree is high.

(3) The drainage system based on the municipal road shunt pipe network has multiple use methods, can design the use methods according to specific use requirements, is applicable to various environments, and can consider runoff pollution under the condition that municipal sewage pipes have no holding capacity or consider the runoff pollution under the condition that the holding capacity is limited; the sewage in the buffer portion can be conveyed to the municipal sewage pipe in combination with the holding capacity of the municipal sewage pipe in consideration of the capacity of the buffer portion.

Drawings

Fig. 1 is a schematic diagram of a system without a septic tank according to an embodiment.

Fig. 2 is a schematic diagram of a system for setting a septic tank according to an embodiment.

FIG. 3 is a flowchart of a first method in embodiment 7.

FIG. 4 is a flowchart of a second method in embodiment 7.

FIG. 5 is a flowchart of a third method in example 7.

FIG. 6 is a flowchart of a fourth method in example 7.

FIG. 7 is a flowchart of method five in example 7.

FIG. 8 is a flowchart of method six in example 7.

FIG. 9 is a flowchart of a seventh method in embodiment 7.

Fig. 10 is a schematic view of a plurality of cutouts of fig. 1-2.

Reference numerals: 1-confluence pipe, 10-sewage branch pipe, 11-rainwater inlet, 12-municipal sewage pipe, 13-municipal rainwater pipe, 2-cut-off part, 3-diversion facility and 4-buffer part.

Detailed Description

The invention is described in further detail below with reference to the figures and the embodiments.

Before describing the present invention, the following explanation is made for terms and terms related to the present invention, so as to enable those skilled in the art to understand the present invention more clearly and clearly, and further to support the technical problems to be solved and the technical effects to be achieved, and before describing the present invention:

a confluence (branch) pipe which is a pipe for transporting rainwater, sewage, or mixed water of rainwater and sewage in the unit area pipe; a sewage branch pipe which is a pipe for transporting sewage in the unit area pipe; the municipal rainwater pipe is a pipeline used for conveying rainwater in a municipal pipeline; municipal sewage pipes are pipes used for conveying sewage in municipal pipelines.

It will be understood by those skilled in the art that the terms "storm water", "sewage", and "mixed water" are not intended to limit the "branch pipe" function, nor are the terms "municipal storm water", "municipal sewage", and "pipe" function, but are merely used for distinguishing purposes. In other words, the merging branch, the sewage branch, the municipal rainwater pipe, and the municipal sewage pipe may all use the same pipe, or different pipes, or partially the same and partially different pipes, but the present invention is not limited thereto, and any pipe capable of conveying liquid is suitable for the present invention, and is within the scope of the present invention.

The dirty water referred to in the invention can be understood as domestic sewage, or initial rain, or mixed water of domestic sewage and initial rain; "clean water" is understood to mean late-stage rainwater. Specifically, for the rainfall period, the rain water can be divided into the first rain and the middle and later rain, and the division manner can adopt a time-length method, a water quality method or a liquid level method in the prior art, for example, when the time-length method is adopted, the corresponding rain water is the first rain at the early stage of the rainfall, and the corresponding rain water is the middle and later rain at the middle and later stages of the rainfall; if a water quality method is adopted, when the concentration of the rainwater is higher than a certain concentration threshold value, the rainwater is the initial rainwater, and when the concentration of the rainwater is lower than a certain concentration threshold value, the rainwater is the middle and later stage rainwater; if the liquid level method is adopted, the rainwater is the initial rainwater when the liquid level of the rainwater is lower than a certain liquid level threshold, and the rainwater is the middle and later stage rainwater when the liquid level of the rainwater is higher than a certain liquid level threshold.

The method for determining the specific mode of the initial rain or the middle and later rain is not limited, and the determination can be selected according to the actual operation requirement; in other words, any of the above-described ways of determining early rain or mid-late rain is suitable for use in the present invention.

Of course, it should be understood by those skilled in the art that, since a certain error is allowed in the drainage process of rainwater and/or sewage in the actual operation process, a certain error may exist in the specific division of each period, for example, there is a division node between the initial rain and the middle and late rain which is not strict, so that the middle and late rain is mixed with the middle and late rain, or the initial rain/middle and late rain is mixed with a small amount of sewage, so that there is an error in the division of "clean water" and "dirty water", and the operation influence caused by the error is negligible because it does not affect the implementation effect of the whole technical solution of the present invention, and therefore it should not be considered as being out of the protection scope of the present invention.

Example 1

Referring to fig. 1, the conventional confluence piping network system has a sewage branch pipe 10, a rainwater port 11 and a confluence pipe 1 which are located in a unit area, water flowing out of the unit area enters a municipal sewage pipe 12 and a municipal rainwater pipe 13, the sewage branch pipe 10 and the rainwater port 11 in the unit area are respectively connected to the lines of the confluence pipe 1, and the sewage branch pipe 10 and the rainwater port 11 are connected in parallel to the lines of the confluence pipe 1; the unit areas in this embodiment are areas such as a community, a hospital, an office building, and the like.

This embodiment provides a drainage system based on town road reposition of redundant personnel tubulation net is based on the transformation that current confluence tubulation network system goes on, and this system includes:

the intercepting part 2 is arranged close to the access part of the sewage branch pipe 10 connected to the confluence pipe 1 or the upstream of the access part, the intercepting part 2 is provided with an inlet and a first outlet, the inlet is communicated with the sewage branch pipe 10, the first outlet is communicated with the confluence pipe 1, and a first water switch is arranged to control the water passing of the first outlet; the intercepting part 2 in the embodiment can be a well body structure such as a gate well, an installation well, a diversion well and an intercepting well, a plurality of sewage branch pipes 10 in each unit area can be collected into a pipeline to be connected with the confluence pipe 1, the intercepting part 2 can be arranged on the pipeline connected with the confluence pipe 1, the plurality of sewage branch pipes 10 can be respectively connected with the confluence pipe 1, the intercepting part 2 can be arranged on each sewage branch pipe 10 or the part connected with the confluence pipe 1, and the position and the number of the intercepting and distributing part 2 can be specifically modified and distributed according to the actual condition of the pipeline in the existing unit area;

shunt facilities 3, shunt facilities 3 has the import, third export and fourth export, shunt facilities 3's import links to each other with confluence pipe 1, third exit linkage municipal sewer pipe 12, fourth exit linkage municipal rainwater pipe 13, and shunt facilities 3 are located sewage branch pipe 10, the low reaches of inlet for stom water 11, shunt facilities 3 still has the water conservancy switch of controlling third export and fourth export water respectively and is third water conservancy switch and fourth water conservancy switch, shunt facilities 3 are used for shunting dirty water to municipal sewer pipe 12, shunt clean water to municipal rainwater pipe 13. The flow dividing facility 3 in this embodiment has a well structure, and the well structure is provided with inlets and outlets, and the number and arrangement of the specific outlets can be adjusted according to actual conditions.

Example 2

Referring to fig. 2, the conventional confluence piping network system has a sewage branch pipe 10, a gully 11, a sewage holding facility (e.g., a septic tank) and a confluence pipe 1 which are located in a unit area, an outlet of the septic tank and the gully 11 in the unit area are respectively connected to the lines of the confluence pipe 1, and the septic tank and the gully 11 are connected in parallel to the lines of the confluence pipe 1; the unit areas in this embodiment are areas such as a community, a hospital, an office building, and the like.

The present embodiment 2 differs from embodiment 1 in that:

the intercepting part 2 in the embodiment 1 is arranged between the sewage branch pipe 10 and the confluence pipe 1 or at the connecting part of the sewage branch pipe and the confluence pipe 1;

the cut-off part 2 in embodiment 2 is arranged between the septic tank outlet and the flow-coupling pipe 1 or at the connecting part of the septic tank outlet and the flow-coupling pipe 1. The specific position of the cut-off part 2 is determined by the specific environment of the unit area, and the facility can be freely and flexibly arranged.

Example 3

Referring to fig. 1 and 2, on the basis of the embodiment 1 and 2, for the arrangement of the sewage branch pipe, the cut-off part and the sewage receiving facility:

in the first mode, the number of the sewage branch pipes is 1, the number of the cut-off parts 2 is 1, 1 sewage containing facility is arranged between 1 sewage branch pipe 10 and 1 cut-off part 2, and an inlet of 1 cut-off part 2 is connected with an outlet of 1 sewage containing facility;

in a second mode, the number of the sewage branch pipes 10 is several, the number of the cut-off parts 2 and the number of the sewage containing facilities are both matched with the number of the sewage branch pipes 10, a corresponding sewage containing facility is arranged between each sewage branch pipe 10 and a corresponding cut-off part 2, and an inlet of each cut-off part 2 is connected with an outlet of a corresponding sewage containing facility;

in a third mode, the number of the sewage branch pipes 10 is a plurality, the number of the interception portions 2 is matched with the number of the sewage containing facilities, the number of the interception portions 2 or the number of the sewage containing facilities is smaller than the number of the sewage branch pipes 10, one part of the sewage branch pipes 10 in the plurality of sewage branch pipes 10 is communicated with the corresponding interception portion 2 through one sewage containing facility, and each other part of the sewage branch pipes 10 in the rest part of the sewage branch pipes 10 is communicated with the corresponding interception portion 2 through the corresponding sewage containing facility.

In a fourth mode, the number of the sewage branch pipes 10 is a plurality, the number of the cut-off parts 2 and the number of the sewage containing facilities are 1, and the plurality of the sewage branch pipes 10 are communicated with the corresponding one of the cut-off parts 2 through one of the sewage containing facilities.

Those skilled in the art can understand that the arrangement mode of the cut-off part, the sewage branch pipe and the sewage containing facility is specifically determined by which of the above embodiments, and can be selected according to the actual operation requirement; in other words, the arrangement of the intercepting part, the sewage branch pipe and the sewage containing facility is not particularly limited, and the above four embodiments and similar embodiments in the prior art are all applicable to the present invention, and are within the protection scope of the present invention, as long as the technical effects that the sewage discharged from the unit area is collected to the sewage containing facility through the sewage branch pipe and then discharged to the intercepting part from the sewage containing facility can be achieved.

In addition, the number and the position of the intercepting parts 2 provided in the present embodiment are not particularly limited as long as sewage interception can be achieved.

Further, as shown in fig. 10, in the embodiment 1, 2 or 3, regarding the cut-off portion, there may be a plurality of (greater than or equal to 2), that is, when there are a plurality of unit areas, the drainage system may include:

1 confluence branch pipe 1, which is respectively connected with a plurality of sewage branch pipes 10 and a rainwater port 11 in the plurality of unit areas along the line; with a plurality of closure part 2 of regional quantity looks adaptation of unit, each closure part 2 is corresponding to one the sewage branch pipe is connected to set up in being close to the upper reaches at this sewage branch pipe 10 access point or access point of confluence branch pipe 1, each closure part 2 has import and first export, the import intercommunication corresponds sewage branch pipe 10, first export is through first water conservancy switch intercommunication confluence branch pipe 1, first water conservancy switch control the water of first export. A sewage containing facility is arranged between each sewage branch pipe 10 and the corresponding cut-off part 2, and an inlet of the cut-off part 2 is connected with an outlet of the sewage containing facility.

Similarly, the system also comprises a control system, wherein the control system comprises a first monitoring device and a controller, and the first monitoring device is in signal connection with the controller; the controller is used for controlling the action of the water conservancy switch of the first outlet according to the rainfall signal; when a clear day signal is monitored, controlling the first outlets of one or more intercepting parts 2 to be opened, and enabling dirty water to flow into the confluence branch pipe 1 through the first outlets; when a rainy day signal is monitored, the first outlet of the cut-off part 2 is controlled to be closed, and water flowing into the rainwater inlet 11 is gathered to the confluence pipe.

Therefore, by constructing the drainage system of the pipe network structure aiming at a plurality of unit areas, pipe networks in the plurality of unit areas are communicated, rain and sewage distribution in the plurality of unit areas is synchronously realized, and the method has the characteristics of low cost and wide applicability.

Example 4

On the basis of the above embodiments 1 to 3, if runoff pollution is considered, as a further preferable mode, the diversion facility 3 is further provided with a fifth outlet and a fifth water conservancy switch for controlling the fifth outlet to pass water, the fifth outlet is connected with the primary rain storage tank or the rainwater treatment facility, the first, third and fourth water conservancy switches are turned off, the first, third and fourth outlets are turned off, the fifth water conservancy switch is turned on, and the primary rainwater is diverted to the primary rain storage tank or the rainwater treatment facility; the first, third and fifth water conservancy switches are closed, the first, third and fifth outlets are closed, the fourth water conservancy switch is opened, and rainwater in the middle and later periods is shunted to the municipal rainwater pipe 13.

Example 5

On the basis of embodiments 1 to 4, the system further comprises a controller and a first monitoring device, the first monitoring device is in signal connection with the controller, the first monitoring device is used for monitoring rainfall signals, and the controller is used for controlling the actions of the water conservancy switches of the first outlet, the third outlet and the fourth outlet according to the rainfall signals.

The first monitoring device is at least one of a device for monitoring the liquid level of the water body, a device for monitoring the water quality of the water body, a device for monitoring the rainfall and a device for monitoring the total amount of the water body correspondingly, and the rainfall signal is at least one of a water level signal, a water quality signal, a rainfall signal and a total amount of the water body signal.

Further preferably, the control system further comprises a third monitoring device, the third monitoring device is used for monitoring the capacity signal of the municipal sewage pipe 12, and the controller is used for controlling the actions of the water conservancy switches of the first outlet, the third outlet and the fourth outlet according to the rainfall signal and the capacity signal. The third monitoring device in this embodiment is a level gauge disposed in the municipal sewage pipe 12, and determines whether the municipal sewage pipe 12 has capacity by monitoring the liquid level in the municipal sewage pipe 12.

Further preferably, the control system further comprises a fourth monitoring device, the fourth monitoring device is used for monitoring rainfall intensity signals, and the controller is used for controlling the actions of the water conservancy switches of the first outlet, the third outlet and the fourth outlet according to the rainfall signals and the rainfall intensity signals. The fourth monitoring device in this embodiment is the same device as the first monitoring device, and the rainfall intensity signal is converted from the signal monitored by the first monitoring device, and if the first monitoring device is a rainfall meter, the rainfall intensity can be converted from the rainfall monitored by a rainfall meter, and the fourth monitoring device can also be an independent device, specifically set according to the actual use requirement.

The specific control logic is as follows: in sunny days, the first water conservancy switch is turned on, the first outlet is communicated, the third water conservancy switch is turned on, the third outlet is communicated, the fourth water conservancy switch is turned off, the fourth outlet is intercepted, and sewage in the unit area enters the municipal sewage pipe 12 through the sewage branch pipe 10, the municipal confluence pipe 1 and the third outlet of the diversion facility 3;

in rainy days, the first water conservancy switch is closed, the first outlet is cut off, the third water conservancy switch is closed, the third outlet is cut off, the fourth water conservancy switch is opened, the fourth outlet is conducted, rainwater flowing into the rainwater port 11 in the unit area is converged into the confluence pipe 1, and enters the municipal rainwater pipe 13 through the fourth outlet of the diversion facility 3. In this embodiment, whether the weather is sunny or rainy is determined by using the monitoring signal of the first monitoring device, taking the first monitoring device as an example of rainfall, setting a rainfall threshold value for the rainfall in the area of the rainfall monitoring unit, and determining that the monitored rainfall is higher than the rainfall threshold value is rainy and irregular is sunny. The first water conservancy switch, the second water conservancy switch and the fourth water conservancy switch are turned on or off in the embodiment, which means states of the first water conservancy switch, the second water conservancy switch and the fourth water conservancy switch in rainy days or sunny days.

Further preferably, when the municipal sewage pipe 12 has a capacity in rainy days, runoff pollution needs to be considered in a unit area, and in rainy days, the first water conservancy switch is closed in an initial rainwater stage, the first outlet is cut off, the third water conservancy switch is opened, the third outlet is communicated, the fourth water conservancy switch is closed, the fourth outlet is cut off, initial rainwater converged by the rainwater openings 11 in the unit area flows into the confluence pipe 1 and enters the municipal sewage pipe 12 through the third outlet of the diversion facility 3; in the middle and later stage rainwater stage, the first water conservancy switch is closed, the first outlet is cut off, the third water conservancy switch is closed, the third outlet is cut off, the fourth water conservancy switch is opened, the fourth outlet is switched on, the middle and later stage rainwater flowing into the rainwater inlet 11 in the unit area flows into the confluence pipe 1, and the rainwater enters the municipal rainwater pipe 13 through the fourth outlet of the diversion facility 3. In this embodiment, the initial rainwater refers to dirty rainwater, and the middle-late rainwater refers to cleaner rainwater, and is not specific to the time sequence of rainfall. In this embodiment, the municipal sewage pipe 12 capacity monitoring in the method is performed using a capacity signal from a third monitoring device.

As a deformation place, when the municipal sewage pipe 12 has no capacity in rainy days, the diversion facility 3 is further provided with a fifth outlet, a fifth water conservancy switch is arranged near the fifth outlet, the fifth outlet is connected with a rainwater storage tank or a rainwater treatment facility, in the early rainwater stage, the first water conservancy switch, the third water conservancy switch and the fourth water conservancy switch are all closed, the first outlet, the third outlet and the fourth outlet are all cut off, and initial rainwater flowing into the rainwater inlet 11 in the unit area enters the flow merging pipe 1 and flows into the storage tank or the rainwater treatment facility through the fifth outlet of the diversion facility 3; in the middle and later stage rainwater stage, the first, third and fifth water conservancy switches are all closed, the first, third and fifth outlets are all cut off, the fourth water conservancy switch is opened, the fourth outlet is conducted, and the middle and later stage rainwater flowing into the rainwater merging pipe 1 in the unit area flows into the municipal rainwater pipe 13 through the fourth outlet of the diversion facility 3.

Further preferably, the control system further comprises a fourth monitoring device, the fourth monitoring device is used for monitoring rainfall intensity signals, and the controller is used for controlling the actions of the water conservancy switches of the first outlet, the third outlet and the fourth outlet according to the rainfall signals and the rainfall intensity signals. The specific control logic is as follows: when the rainfall intensity is low, the first water conservancy switch and the third water conservancy switch are opened, the first outlet and the third outlet are opened, the fourth water conservancy switch is closed, the fourth outlet is closed, and the sewage of the sewage branch pipe and the rainwater gathered by the rainwater inlet are mixed in the confluence pipe and then are shunted to the municipal sewage pipe by the shunting facility; when rainfall intensity is large, the first water conservancy switch and the third water conservancy switch are closed, the first outlet and the third outlet are closed, the fourth water conservancy switch is opened, the fourth outlet is opened, the sewage branch pipe and the confluence pipe are cut off, and rainwater gathered at the rainwater inlet enters the municipal rainwater pipe through the confluence pipe and the fourth outlet of the diversion facility. The fourth monitoring device in this embodiment is the same device as the first monitoring device, and the rainfall intensity signal is converted from the signal monitored by the first monitoring device, and if the first monitoring device is a rainfall meter, the rainfall intensity can be converted from the rainfall monitored by a rainfall meter, and the fourth monitoring device can also be an independent device, specifically set according to the actual use requirement. The rainfall intensity is larger than the set rainfall intensity threshold, and the rainfall intensity is smaller than the set rainfall intensity threshold, so the rainfall intensity is determined according to the set rainfall intensity threshold, and the setting of the rainfall intensity threshold, the perennial rainfall environment in which the unit area is located, and the capacity of the sewage pipe are determined, which is not specifically limited in this embodiment.

It is longer if more than 12 hours to be applicable to during the rainfall, if close first water conservancy switch sewage branch pipe 10 for a long time and cut off, sewage branch pipe 10 pressure is great, for further solving the great problem of sewage branch pipe 10 pressure, can select to be less at rainfall intensity, and municipal sewer pipe 12 has the condition of holding capacity, it is first, third water conservancy switch opens, first export and third export switch on, fourth water conservancy switch closes, the fourth export cuts off, partial sewage inflow flow-in pipe 1 in sewage branch pipe 10, inlet pipe 11 flows into after a small amount of rainwater and sewage mix and gets into flow-in pipe 1 and flow into municipal sewer pipe 12 through the third export. This way, the pressure of the sewage branch pipe 10 is relieved, and the resources of the municipal sewage pipe 12 can be fully utilized, so that the resources are reasonably utilized.

Example 6

On the basis of embodiments 1 to 5, still set up buffering portion 4, the first export of closure part 2 links to each other with flow tube 1, and the second export of closure part 2 links to each other with buffering portion 4, and buffering portion 4 is used for buffering the partial domestic sewage that the septic tank flows out. Buffer 4 is used for saving the partial domestic sewage of rainy day, and the rainwater that the inlet for stom water 11 flows is converged in the confluence pipe 1, has avoided domestic sewage to sneak into the rainwater, shunts the rainwater to municipal administration downspout 13 through reposition of redundant personnel facility 3, when the rainy day, delays the emission of domestic sewage, and control mode is simple, and treatment effect is good.

Further preferably, the intercepting part 2 and the buffer part 4 in the above scheme form an integral storage pool, the storage pool is internally provided with a partition part which does not partition the inside of the pool body into the intercepting part 2 and the buffer part 4, the second outlet is positioned on the partition part, and the pool body enclosed to form the intercepting part 2 is provided with an inlet and a first outlet.

In addition, the storage pool of this embodiment is the cell body structure that the at least part of excavation is located underground, set up the overflow wall in the cell body structure, the synthetic buffering corridor of partition wall front side and cell body enclosure all around is equivalent to closure 2, the synthetic storage space of partition wall rear side and cell body enclosure all around is equivalent to buffer 4, wherein, set up first export on the lateral wall of buffering corridor, be close to first export and set up water conservancy switch, set up the second export on the partition wall, if the partition wall is the overflow wall then the overflow mouth of overflow wall is the second export, also can set up the second export on the partition wall as other modes, set up water conservancy switch near the second export and be second water conservancy switch. The specific operation and use mode is as follows: in sunny days, a first water conservancy switch close to a first outlet is opened, the first outlet is communicated, domestic sewage flowing out of the septic tank flows into the confluence pipe 1 from the first outlet of the buffer corridor, in rainy days, the first water conservancy switch close to the first outlet is closed, the domestic sewage flowing out of the septic tank flows into the buffer part 4 from an overflow port above an overflow wall, namely a second outlet, or the second outlet of the second water conservancy switch is opened to be communicated, the domestic sewage in rainy days is stored in the buffer part 4, and rainwater flowing out of the rainwater port 11 is converged into the confluence pipe 1. The control mode is simple, and maneuverability is strong, can realize the distribution of rain and sewage promptly from the source.

Further preferably, the intercepting part 2 and the buffering part 4 in the above scheme are of split structures, the intercepting part 2 is a diversion well, an intercepting well or a flow abandoning well, the buffering part 4 is a tank body structure or a tank body with a storage space, when the diversion well, the intercepting well or the flow abandoning well adopts a weir structure or a groove weir structure, a first outlet and a second outlet are arranged on the well body of the diversion well, the intercepting well or the flow abandoning well, a facility water conservancy switch, namely a first water conservancy switch, can be only arranged near the first outlet, the second outlet is positioned at the downstream of an overflow weir in the well, and diversion wells, intercepting wells or flow abandoning wells of other structures need to be provided with a second water conservancy switch for controlling the second outlet to overflow. Can be according to the particular case of service environment, in suitable regional facility cut-off portion 2 and buffer 4, nimble many convenient, application scope is wide.

Further preferably, the buffering portion 4 and the cut-off portion 2 in the above scheme can be connected with an outlet of a septic tank or connected with outlets of a plurality of septic tanks and sewage branch pipes 10. The storage space of the buffer part 4 is designed according to the sewage amount generated by the water collecting area corresponding to the septic tank and the sewage branch pipe 10 connected with the buffer part, the design is reasonable, and the resources are distributed and merged.

The rainfall monitoring device is connected with the controller in a signal mode, the first monitoring device is used for monitoring rainfall signals, the controller is used for controlling the action of the water conservancy switches of the first outlet, the third outlet and the fourth outlet according to the rainfall signals, and if the second outlet is provided with the second water conservancy switch, the controller is used for controlling the action of the water conservancy switches of the first outlet, the second outlet, the third outlet and the fourth outlet according to the rainfall signals. The first monitoring device in the embodiment is at least one of a device for monitoring the liquid level of the water body, a device for monitoring the water quality of the water body, a device for monitoring the rainfall and a device for monitoring the total amount of the water body; correspondingly, the rainfall signal is at least one of a water body liquid level signal, a water body water quality signal, a rainfall signal and a water body total amount signal.

Further preferably, in this embodiment, the rainfall signal is a liquid level signal, the device for monitoring the liquid level of the water body is a liquid level meter, and is arranged in the diversion facility 3, when rainfall occurs, the water level in the diversion facility 3 rises, so that whether rainfall occurs can be judged by monitoring the liquid level value in the diversion facility 3, a liquid level threshold value can be set, when the monitored liquid level value is higher than the liquid level threshold value, the controller controls the first water conservancy switch close to the first outlet to be closed, and if the second outlet is provided with the second water conservancy switch, the second water conservancy switch is controlled to be opened, the second outlet is controlled to be opened, meanwhile, the third water conservancy switch closes the third outlet to be closed, and the fourth water conservancy switch opens the fourth outlet to be opened; otherwise, the controller controls the first water conservancy switch to be opened, the first outlet is conducted, if the second outlet is provided with the second water conservancy switch, the second water conservancy switch is controlled to be closed, the second outlet is cut off, meanwhile, the third water conservancy switch opens the third outlet to be opened, and the fourth water conservancy switch closes the fourth outlet to be cut off.

Preferably, the rainfall signal is a water quality signal in this embodiment, the device for monitoring water quality is a COD sensor, and is disposed in the diversion facility 3, because the concentration of the pollutant in water is high when no rainwater is mixed in the diversion facility 3, and when rainwater is mixed, the concentration of the diluted pollutant in sewage is reduced, therefore, whether rainfall is possible can be determined by monitoring the concentration value of the pollutant in the diversion facility 3, a first pollutant concentration threshold value can be set, when the monitored concentration value of the pollutant is lower than the pollutant concentration threshold value, the controller controls the first water conservancy switch to be closed, the first outlet is closed, if the second outlet is provided with the second water conservancy switch, the second water conservancy switch is controlled to be opened, the second outlet is conducted, meanwhile, the third water conservancy switch closes the third outlet to be closed, and the fourth water conservancy switch opens the fourth outlet to be opened; otherwise, the controller controls the first water conservancy switch to be opened, the first outlet is conducted, if the second outlet is provided with the second water conservancy switch, the second water conservancy switch is controlled to be closed, the second outlet is cut off, meanwhile, the third water conservancy switch opens the third outlet to be opened, and the fourth water conservancy switch closes the fourth outlet to be cut off.

Further preferably, in this embodiment, the rainfall signal is a rainfall signal, the device for monitoring rainfall is a rain gauge, and is generally disposed outside the diversion facility 3, the rain gauge can monitor whether rainfall occurs or not, and set a rainfall threshold, when the monitored rainfall value is greater than the rainfall threshold, the controller controls the first water conservancy switch to be closed, the first outlet to be closed, and if the second outlet is provided with the second water conservancy switch, the controller controls the second water conservancy switch to be opened, the second outlet to be connected, and simultaneously the third water conservancy switch closes the third outlet to be closed, and the fourth water conservancy switch opens the fourth outlet to be opened; otherwise, the controller controls the first water conservancy switch to be opened, the first outlet is conducted, if the second outlet is provided with the second water conservancy switch, the second water conservancy switch is controlled to be closed, the second outlet is cut off, meanwhile, the third water conservancy switch opens the third outlet to be opened, and the fourth water conservancy switch closes the fourth outlet to be cut off.

In addition, if the problem of water flow delay or runoff pollution in the pipeline is considered, a timer, a liquid level meter, a COD sensor and other equipment can be arranged to be combined into a rainfall-liquid level method, a rainfall-water quality method, a rainfall-time method and the like, taking the rainfall-time method as an example, when the rainfall value is detected to be larger than a rainfall threshold value, timing is started, the first water conservancy switch is turned off, the third water conservancy switch is turned on, the fourth water conservancy switch is turned off, and the third water conservancy switch and the fourth water conservancy switch are controlled to be turned on after a period of time is delayed. By analogy, various monitoring devices can be combined for use, and the sewage disposal and the flow distribution can be accurately controlled.

Further preferably, the control system further comprises a second monitoring device, the second monitoring device is used for monitoring liquid level height signals in the buffer part 4, the controller is used for controlling the water conservancy switch actions of the first outlet, the third outlet and the fourth outlet according to the liquid level height signals and rainfall signals, and if the second outlet is provided with the water conservancy switch, the water conservancy switch action of the second outlet needs to be controlled. The second monitoring device that this embodiment set up is the level gauge, and in level gauge installation and buffer 4, the liquid level height signal of monitoring buffer 4. In general, the volume of the buffer part 4 is designed by taking the total amount of sewage generated when the domestic sewage is more in the three time periods of early, middle and late in the residential area in the period of generating the sewage peak according to the corresponding catchment area as a reference, and the buffer part 4 is emptied, can be emptied in a clear day, and can also be emptied after the buffer part 4 is fully regulated and stored.

The specific control logic is as follows: when the monitored rainfall signal is sunny, the first outlet is opened, the third outlet is opened, the fourth outlet is closed, and sewage continuously entering the intercepting part 2 enters the shunting facility 3 and then enters the municipal sewage pipe 12; further, in order to make reasonable use of the volume of the buffer 4, the monitored rainfall signal is clear, and water in the buffer 4 can be selectively pumped or drained by gravity into the cut-off part 2 and then flows out of the first outlet into the diversion facility 3 and then enters the municipal sewage pipe 12 to empty the buffer 4.

In another preferred embodiment, the control system further comprises a third monitoring device for monitoring the capacity of the municipal sewage pipe 12 to obtain a capacity signal, and the controller is used for controlling the hydraulic switch actions of the first outlet, the third outlet and the fourth outlet according to the rainfall signal and the capacity signal.

For the area with serious runoff pollution, the diversion facility 3 intercepts part of the initial rainwater and enters the municipal sewage pipe 12, and intercepts the middle and later rainwater and enters the municipal rainwater pipe 13. The specific control system and control logic are as follows:

taking a water quality monitoring method as an example, a water quality concentration threshold value is set;

when rainfall is monitored and the concentration value of the monitored water quality is lower than the threshold value of the concentration of the water quality, the first outlet is closed, the third outlet is closed, the fourth outlet is opened, and relatively clean water enters the municipal rainwater pipe 13; when rainfall is monitored and the monitored water concentration is above the water concentration threshold, and the municipal sewage pipe 12 has a capacity, the first outlet is closed, the third outlet is opened, the fourth outlet is closed, and dirty rainwater enters the municipal sewage pipe 12. In rainy days, no matter whether the municipal sewage pipe 12 has capacity, clean rainwater is conveyed to the municipal sewage pipe 13, and only under the condition that the municipal sewage pipe 12 has capacity, dirty rainwater is shunted to the municipal sewage pipe 12, so that the treatment of runoff pollution is considered as much as possible, and resources are reasonably distributed.

The device is suitable for special conditions, such as continuous rainfall time exceeding twelve hours, the buffer part 4 reaches the upper limit of accommodation in the rainfall process, and if the buffer part 4 and the septic tank are discharged again when waiting for sunny days, the buffer part 4 and the septic tank can be submerged. Since the situation that the rainfall intensity is continuously high in the whole rainfall process is rare, when the rainfall intensity is low, the buffer part 4 can be emptied or partially emptied or sewage flowing out of the septic tank enters the flow-merging pipe 1, the rainfall intensity of the embodiment can be obtained by monitoring the rainfall, and the specific operation mode is as follows:

taking rainfall as an example, setting a first rainfall threshold and a second rainfall threshold;

when the monitored rainfall is higher than the first rainfall threshold value, closing the first outlet, closing the third outlet and opening the fourth outlet; when the liquid level of the buffer part 4 is higher than a set liquid level threshold value and the rainfall is higher than a first rainfall threshold value and lower than a second rainfall threshold value, opening a first outlet, opening a third outlet and closing a fourth outlet, enabling sewage flowing out of the septic tank to flow out of the first outlet, enter a diversion facility 3 and then be sent into a sewage treatment facility 12 for treatment, and further reducing the sewage amount entering the buffer part 4, if a second water switch is arranged, the second water switch can be opened, water gravity of the buffer part 4 enters a cut-off part 2, flows out of the first outlet, enters the diversion facility 3 and then is sent into the sewage treatment facility 12, and if the buffer part 4 can be emptied in a pumping mode without the second water switch, pumped and discharged water is also sent into the sewage treatment facility 12; if the liquid level of the buffer part 4 is higher than the rainfall value monitored by the set liquid level threshold value and is higher than the second rainfall threshold value, the first outlet can be closed, the third outlet can be closed, and the fourth outlet can be opened. The rainfall of the present embodiment may be replaced with other data such as rainfall intensity converted from the rainfall.

Furthermore, the first accommodation amount threshold value and the second accommodation amount threshold value can be set by combining a capacity signal of the municipal sewage pipe monitored by the third monitoring device, and conveying the domestic sewage to the municipal sewage pipe 12 in the rainfall process;

and (3) the rainy day signal and the monitored content of the buffer part 4 is higher than a second content threshold value and the monitored content of the municipal sewage pipe is lower than a first capacity threshold value, a first outlet of the interception part 2 is opened, a third outlet of the diversion facility 3 is opened, a fourth outlet is closed, and the dirty water is diverted to the municipal sewage pipe through the first outlet, the diversion facility 3 and the third outlet. As a modification, the buffer part 4 may be emptied or partially emptied at this time, the water in the buffer part 4 may be gravity-flowed or pumped to the cut-off part 2 to enter the municipal sewage pipe through the merging branch pipe 1, the diversion facility 3 and the third outlet, or the continuous water intake of the buffer part 4 may be reduced without considering the outflow of the sewage in the buffer part 4, if the second water switch is provided, the second water switch may be turned off, the first and third water switches may be turned on, and the water flowing out of the septic tank may enter the sewage treatment facility 12 through the first outlet, the merging branch pipe 1, the diversion facility 3 and the third outlet.

Example 7

This embodiment 7 provides a drainage method for a combined pipe network, which uses the drainage system based on a town road divided pipe network of embodiments 1 to 6, and specifically includes the following control methods:

in the first method, as shown in FIG. 3,

monitoring a rainfall signal and judging whether rainfall occurs or not;

if not, the first outlet of the cut-off part 2 is opened, the third outlet of the diversion facility 3 is opened, the fourth outlet is closed, and the dirty water in sunny days is diverted to the municipal sewage pipe 12 through the first outlet, the confluence pipe 1, the diversion facility 3 and the third outlet;

if so, the first outlet of the cut-off part 2 is closed, the third outlet of the diversion facility 3 is closed, the fourth outlet is opened, and the clean water is diverted to the municipal rainwater pipe 13 through the diversion facility 3 and the fourth outlet. If a second water conservancy switch is arranged, the second water conservancy switch is turned on, domestic sewage flowing out of the septic tank enters the buffer part 4 to be stored, and the sewage in the buffer part 4 is sent into the municipal sewage pipe 12 when the sewage pipe 12 has receiving capacity in sunny days. The upper reaches of the confluence pipe 1 realize the rain and sewage separation, the domestic sewage in rainy days is delayed to be discharged, the existing pipe network system is not greatly improved, and the sewage removal and diversion of the confluence pipe 1 can be realized.

In the second method, as shown in FIG. 4,

on the basis of the first method, when rainfall is monitored, a rainfall intensity signal is further monitored, and whether the rainfall intensity is greater than a set rainfall intensity is judged;

if not, the first outlet of the cut-off part 2 is opened, the third outlet of the diversion facility 3 is opened, the fourth outlet is closed, and the dirty water in the sewage branch pipe is diverted to the municipal sewage pipe 12 through the first outlet, the confluence pipe 1, the diversion facility 3 and the third outlet; preferably, the water inside the buffer 4 is drained by gravity or by pumping into the cut-off 2;

if so, the first outlet of the cut-off part 2 is closed, the third outlet of the diversion facility 3 is closed, the fourth outlet is opened, and the clean water is diverted to the municipal rainwater pipe 13 through the diversion facility 3 and the fourth outlet. If set up second water conservancy switch this moment, open second water conservancy switch, the domestic sewage that flows out from the septic tank gets into buffer 4 and stores.

The second method is suitable for the condition that the capacity of the sewage branch pipe or the buffer part is limited, and a part of space is used up as much as possible under the condition that the rainfall intensity is small, so that safety guarantee is provided for the subsequent system operation.

In the third method, as shown in FIG. 5,

on the basis of the second method, under the condition that the monitored rainfall intensity is lower than the set rainfall intensity, further monitoring whether the municipal sewage pipe has capacity or not;

if not, the first outlet of the cut-off part 2 is closed, the third outlet of the flow dividing facility 3 is closed, the fourth outlet is opened, and clean water is divided to the municipal rainwater pipe 13 through the flow dividing facility 3 and the fourth outlet. If a second water conservancy switch is arranged, the second water conservancy switch is turned on, and domestic sewage flowing out of the septic tank enters the buffer part 4 to be stored;

if yes, a first outlet of the cut-off part 2 is opened, a third outlet of the diversion facility 3 is opened, a fourth outlet is closed, and dirty water in sunny days is diverted to the municipal sewage pipe 12 through the first outlet, the confluence pipe 1, the diversion facility 3 and the third outlet; preferably, the water in the buffer 4 is drained by gravity or pumped into the cut-off 2.

The method further ensures the safe drainage of the pipe network, comprehensively considers that the pipe network system can operate effectively, empties the sewage branch pipe or the buffer part or partially empties the sewage branch pipe or the buffer part under the conditions that the municipal sewage pipe has capacity and the rainfall intensity is small, preserves the water storage capacity and has higher safety factor.

In the fourth method, as shown in FIG. 6,

on the basis of the second method, under the condition that the monitored rainfall intensity is lower than the set rainfall intensity, further monitoring whether the buffer part has capacity or not;

if not, the first outlet of the cut-off part 2 is opened, the third outlet of the shunt facility 3 is opened, the fourth outlet is closed, and the dirty water in the sewage branch pipe is shunted to the municipal sewage pipe 12 through the first outlet, the confluence pipe 1, the shunt facility 3 and the third outlet, so that the volume of the buffer part is reserved for reducing the water inflow of the buffer part; preferably, it will also be possible to drain the water in the buffer 4 by gravity or by pumping into the cut-off 2, partially empty;

if so, the first outlet of the cut-off part 2 is closed, the third outlet of the flow dividing facility 3 is closed, the fourth outlet is opened, and the clean water in the confluence pipe is divided to the municipal rainwater pipe 13 through the flow dividing facility 3 and the fourth outlet. If set up second water conservancy switch this moment, open second water conservancy switch, the domestic sewage that flows out from the septic tank gets into buffer 4 and stores.

The method IV combines rainfall intensity and cut-off part capacity, comprehensively considers the actual operation condition, further aims to preserve the space of the sewage branch pipe and the buffer part, continuously preserves water storage capacity, does not build a larger buffer part, and reasonably utilizes resources.

In the fifth method, as shown in FIG. 7,

on the basis of the fourth method, whether the municipal sewage pipe has capacity or not is further monitored when the buffer part has no capacity;

if the municipal sewage pipe has capacity, the first outlet of the cut-off part 2 is opened, the third outlet of the flow dividing facility 3 is opened, the fourth outlet is closed, and the sewage in the sewage branch pipe is divided into the municipal sewage pipe 12 through the first outlet, the flow merging pipe 1, the flow dividing facility 3 and the third outlet, so that the capacity of the buffer part is reserved for reducing the water inflow of the buffer part; preferably, it will also be possible to drain the water in the buffer 4 by gravity or by pumping into the cut-off 2, partially empty;

the municipal sewage pipe does not have the flow, then closes the first export of damming portion 2, and the third export of reposition of redundant personnel facility 3 is closed, and the fourth export is opened, shunts the interior clean water of confluence intraductal reposition of redundant personnel facility 3, fourth export to municipal rainwater pipe 13.

The method integrates the capacities of the pipe network and the buffer part, ensures the safety of a pipe network drainage system, simultaneously keeps the subsequent water storage capacity of the buffer part, ensures relatively confluent control and has high safety.

In a sixth method, as shown in FIG. 8,

monitoring rainfall on the basis of the first method, further monitoring whether a rainfall signal reaches a set rainfall signal threshold value,

if not, the first outlet of the cut-off part 2 is closed, the third water conservancy switch of the diversion facility is opened, the fourth outlet is opened, the fourth water conservancy switch is closed, the fourth outlet is closed, and the initial rainwater in the confluence pipe is diverted to a municipal sewage pipe or an initial rainwater storage tank or a rainwater treatment facility;

if so, then close the first export of damming part 2, the third water conservancy switch of reposition of redundant personnel facility is closed, and the third export is closed, and the fourth water conservancy switch is opened, and the fourth export is opened, and the middle and later stage rainwater in the confluence pipe is shunted to municipal administration downspout.

Method seven, as shown in figure 9,

on the basis of the seventh method, the monitored rainfall signal does not reach the set rainfall signal threshold value, whether the municipal sewage pipe has capacity or not is further monitored,

if not, the first outlet of the cut-off part 2 is closed, the third water conservancy switch of the diversion facility is closed, the third outlet is closed, the fourth water conservancy switch is opened, the fourth outlet is opened, and the initial rainwater in the confluence pipe is diverted to the municipal rainwater pipe.

If so, the first outlet of the intercepting part 2 is closed, the third water conservancy switch of the flow dividing facility is opened, the fourth outlet is opened, the fourth water conservancy switch is closed, the fourth outlet is closed, and the initial rainwater in the confluence pipe is divided to the municipal sewage pipe.

In the sixth method and the seventh method, the problem of runoff pollution is considered, the initial rainwater is distributed to the municipal sewage pipe, the middle-later rainwater is distributed to the municipal rainwater pipe, and whether the initial rainwater or the middle-later rainwater is available or not can be judged according to methods such as a liquid level method, a water quality method, a rainfall method, a total amount method and a time method. The rainfall signal monitoring method comprises the steps of monitoring rainfall signals, namely a liquid level signal, a water quality signal, a rainfall signal, a time signal and the like, wherein the monitored rainfall signals reaching a set rainfall signal threshold value in the method can correspond to the water quality signal, the water quality data are converted into reciprocal meeting conditions, and other conditions can be set to meet the identification of initial rainwater, middle and later stage rainwater and correspond to diversion.

For those skilled in the art, the water switch in the embodiments 1 to 2 may be a gate, a weir gate, a valve, a gate valve, an air bag, an air pillow, a pipe clamp valve, or a flexible cut-off device, and may be any device capable of turning on or off the used outlet.

For those skilled in the art, the water conservancy switch in the embodiments 1 and 2 is turned on to indicate that water flows through the water conservancy switch, and correspondingly, the water conservancy switch is turned off to indicate that no water flows through the water conservancy switch.

For those skilled in the art, the types of the electrical components such as the monitoring device and the controller used in the embodiments 1 to 2 are not specifically limited in this embodiment, and the selection of the actual application is made by referring to the selection manual of the corresponding device.

For those skilled in the art, the control logic used in the embodiments 1 to 2 may or may not include the number, and is specifically set according to the programming requirement.

For those skilled in the art, the threshold set in embodiments 1 to 2, such as the threshold of water concentration, may be direct data (implementation monitoring data) or indirect data (reciprocal of the conversion of the converter), as long as the corresponding operation purpose can be satisfied.

Various modifications and variations of the embodiments of the present invention may be made by those skilled in the art, and they are also within the scope of the present invention, provided they are within the scope of the claims of the present invention and their equivalents.

What is not described in detail in the specification is prior art that is well known to those skilled in the art.

Claims

1. A drainage system based on a municipal road shunt pipe network comprises a municipal sewage pipe and a municipal rainwater pipe; characterized in that the drainage system comprises:

the confluence pipe (1) is respectively connected with a sewage branch pipe (10) and a rainwater port (11) in the unit area along the line;

the intercepting part (2) is arranged at the position close to or upstream of the access position of the sewage branch pipe (10) accessed to the confluence pipe (1), the intercepting part (2) is provided with an inlet and a first outlet, the inlet is communicated with the sewage branch pipe (10), the first outlet is communicated with the confluence pipe (1), and a first water switch is arranged to control the water passing of the first outlet;

the intercepting part (2) is provided with a second outlet, the buffering part (4) is connected with the second outlet, and the buffering part (4) is used for storing sewage flowing out of the sewage branch pipe (10) in rainy days;

shunt facilities (3), shunt facilities (3) have import, third export and fourth export, and the import of shunt facilities (3) links to each other with flow merging pipe (1), third exit linkage municipal sewer pipe (12), fourth exit linkage municipal sewer pipe (13), just shunt facilities (3) are located the low reaches of sewage branch pipe (10), inlet for stom water (11), shunt facilities (3) still have the water conservancy switch of controlling third export and fourth export water respectively, shunt facilities (3) are used for dividing dirty water extremely municipal sewer pipe (12) divide clean water to municipal sewer pipe (13).

2. The municipal road diversion pipe network-based drainage system according to claim 1, comprising: a sewage containing facility is arranged between the sewage branch pipe (10) and the cut-off part (2), and an inlet of the cut-off part (2) is connected with an outlet of the sewage containing facility;

or a plurality of sewage branch pipes (10) are arranged at the inlet of the cut-off part (2).

3. The municipal road shunt piping network-based drainage system according to claim 3, wherein:

the intercepting part (2) is a flow dividing well, an intercepting well, a flow abandoning well, a buffering corridor or an installation well, and the buffering part (4) is a tank body structure or a tank body structure with a storage space and is close to the second outlet which is provided with a water conservancy switch for controlling the second outlet to pass water.

4. The municipal road shunt piping network-based drainage system according to claim 1, wherein: still include control system, control system includes first monitoring devices and controller, first monitoring devices with controller signal connection, first monitoring devices is used for monitoring rainfall signal, the controller is used for according to rainfall signal control the water conservancy switch action of first export, third export, fourth export.

5. The municipal road shunt piping network-based drainage system according to claim 4, wherein: the first monitoring device is at least one of a device for monitoring the liquid level of the water body, a device for monitoring the water quality of the water body, a device for monitoring the rainfall and a device for monitoring the total amount of the water body;

6. The municipal road shunt piping network-based drainage system according to claim 5, wherein: the control system further comprises a third monitoring device for monitoring a volume signal of the municipal sewer pipe (12).

7. The municipal road shunt piping network-based drainage system according to claim 6, wherein: the control system further comprises a fourth monitoring device for monitoring rainfall intensity in the unit area.

8. A drainage system based on a municipal road shunt pipe network comprises a municipal sewage pipe and a municipal rainwater pipe; characterized in that the drainage system comprises:

the system comprises 1 confluence pipe (1), a plurality of sewage branch pipes (10) and rainwater openings (11) in the unit areas are respectively connected along the line of the confluence pipe (1);

each interception part (2) is connected corresponding to one or more sewage branch pipes and is arranged close to an access part of the sewage branch pipe (10) to the confluence branch pipe (1) or at the upstream of the access part, each interception part (2) is provided with an inlet and a first outlet, the inlet is communicated with the corresponding sewage branch pipe (10), the first outlet is communicated with the confluence branch pipe (1) through a first water switch, and the first water switch controls the water passing of the first outlet;

the number of the buffer parts (4) is matched with that of the plurality of the interception parts (2), and each buffer part (4) is communicated with one corresponding interception part (2) through a first outlet;

reposition of redundant personnel facility (3), reposition of redundant personnel facility (3) have import, third export and fourth export, the import and 1 of reposition of redundant personnel facility (3) the confluence pipe (1) links to each other, third exit linkage municipal sewer pipe (12), fourth exit linkage municipal rainwater pipe (13), just reposition of redundant personnel facility (3) are located the low reaches of sewage branch pipe (10), inlet for stom water (11), reposition of redundant personnel facility (3) still have the water conservancy switch of controlling third export and fourth export water respectively, reposition of redundant personnel facility (3) are used for dividing dirty water extremely municipal sewer pipe (12) divide clean water to municipal sewer pipe (13).

9. A drainage method based on a municipal road shunt pipe network is suitable for the drainage system of any one of claims 1 to 8, and is characterized by comprising the following steps:

when a clear day signal is monitored, a first outlet of the intercepting part (2) is opened, a third outlet of the shunting facility (3) is opened, a fourth outlet is closed, and dirty water is shunted to the municipal sewage pipe (12) through the first outlet, the confluence pipe (1), the shunting facility (3) and the third outlet;

monitoring a rainy day signal, closing a first outlet of the cut-off part (2), opening a second outlet, and storing sewage in the sewage branch pipe (10) in the buffer part (4); the third outlet of the diversion facility (3) is closed, the fourth outlet is opened, and water flowing in from the rainwater inlet (11) is converged to the confluence pipe (1) and is shunted to the municipal rainwater pipe (13) through the diversion facility (3) and the fourth outlet;

the method further comprises the following steps: monitoring rainfall intensity, and setting a rainfall intensity threshold value;

if a rainy day signal is monitored and the monitored rainfall intensity is lower than a rainfall intensity threshold value, the first outlet is opened, the third outlet is opened, the fourth outlet is closed, and sewage of the sewage branch pipe (10) and rainwater of the rainwater inlet (11) are mixed in the flow merging pipe (1) and then flow into the municipal sewage pipe (12) through the flow dividing facility (3) and the third outlet;

if a rainy day signal is monitored and the monitored rainfall intensity is higher than a rainfall intensity threshold value, the first outlet is closed, the third outlet is closed, the fourth outlet is opened, and rainwater at the rainwater inlet (11) enters the confluence pipe (1) and flows into the municipal rainwater pipe (13) through the diversion facility (3) and the fourth outlet.

10. A method of draining water according to claim 9, wherein:

the receiving capacity of the municipal sewage pipe (12) is monitored, the receiving capacity threshold of the sewage pipe is set as a first receiving capacity threshold, the receiving capacity of the buffer part (4) is monitored, and the receiving capacity threshold of the buffer part is set as a second receiving capacity threshold;

the method comprises the steps that a rainy day signal is obtained, the monitored accommodating capacity of the municipal merging pipe is lower than a first accommodating capacity threshold value, the monitored accommodating capacity of a buffering part (4) is higher than a second accommodating capacity threshold value, a first outlet of a cut-off part (2) is opened, a third outlet of a shunting facility (3) is opened, a fourth outlet is closed, and dirty water and rainwater flowing into the merging pipe (1) from a rainwater inlet (11) are mixed and then flow into a municipal sewage pipe (12) through the shunting facility (3) and the third outlet;

the monitored capacity of the municipal sewage pipe (12) is higher than a first capacity threshold value in rainy day signals, a first outlet of the cut-off part (2) is closed, a third outlet of the diversion facility (3) is closed, a fourth outlet is opened, and rainwater of the rainwater inlet (11) flows into the confluence pipe (1) and flows into the municipal rainwater pipe (13) through the diversion facility (3) and the fourth outlet.