CN210713124U - Flushing and overhauling system for drainage pipeline - Google Patents

Abstract

The utility model discloses a flushing and maintenance system of a drainage pipeline.A check well and a cut-off device are arranged at intervals along the drainage pipeline, and the check well is provided with a water inlet connected with the drainage pipeline at the upstream and a water outlet connected with the drainage pipeline at the downstream; the intercepting device is arranged in an inspection well and comprises an outer shell and a rubber sleeve, the rubber sleeve is arranged in the outer shell, an air cavity or a water cavity is formed between the rubber sleeve and the outer shell, the rubber sleeve is provided with a water flow channel, and one end of the water flow channel is communicated with an upstream drainage pipeline through a water inlet; the other end is communicated with a downstream drainage pipeline through a water outlet; when the cut-off device is inflated or filled with water, the cut-off device is closed, the upstream drainage pipeline is cut off from the downstream drainage pipeline, and when the cut-off device is deflated or drained with water, the rubber cut-off device is opened, and the upstream drainage pipeline is communicated with the downstream drainage pipeline.

Description

A flushing and maintenance system for drainage pipes

technical field

The utility model relates to the technical field of drainage, in particular to a flushing and maintenance system for drainage pipes.

Background technique

At present, the drainage pipes have serious mud accumulation, and the accumulation of mud is too much, which seriously hinders the flood discharge capacity of the drainage pipes. Therefore, the pipes need to be cleaned regularly. Open weir gates, eccentric blocking gates, and the environment in the drainage pipes are relatively harsh. The door panels of these devices are submerged in sewage. Due to various floating objects, particles and silt in the sewage, the door panels and the door frame are easily blocked and stuck, resulting in the door panel. Mechanical failure with door frame. In addition, most of the driving mechanisms of these devices use electric driving mechanisms or hydraulic driving mechanisms. The driving mechanism is applied in the underwater environment, and the sealing requirements are high, which increases the cost, and the electric driving mechanism has the danger of electric leakage and causes electrical failure. The hydraulic driving mechanism Leakage will cause water pollution and poor reliability.

In addition, for the equipment on the drainage pipeline, the safety of flood discharge must be ensured. The flushing equipment used in the prior art requires external power to control the opening and closing, such as an electric drive mechanism or a hydraulic drive mechanism. When the drive mechanism fails In case of power failure or mechanical blockage, the device stops in the closed position and cannot be automatically turned on. Once the above situation occurs, when it rains, floods cannot be safely discharged, resulting in urban waterlogging and urban accumulation. Water, low safety factor.

In the prior art, when the pipeline is repaired, movable airbags are used to block the pipeline on both sides of the inspection position, and the airbags are installed movably. Because the volume of the airbag after deflation is large, it cannot be installed in the drainage pipeline, which will affect the drainage of the pipeline. Therefore, the staff needs to carry airbags for each maintenance. For the drainage pipes with larger diameters, the airbags that need to be used are also larger and heavier, and mechanical equipment is required for hoisting. The maintenance operation cost is high and the operation is difficult.

Utility model content

The purpose of this utility model is to overcome the shortcomings of the above-mentioned background technology, and provide a flushing and maintenance system for drainage pipes, which can meet the needs of flushing and maintenance, and has the advantages of simple structure, safety, reliability and wide application range.

The utility model provides a flushing and maintenance system for a drainage pipeline, which is provided with a drainage pipeline arranged obliquely, and several inspection wells and several intercepting devices are arranged along the drainage pipeline at intervals,

The inspection well is provided with a water inlet connected to its upstream drainage pipeline and a water outlet connected to its downstream drainage pipeline;

The shut-off device is installed in the inspection well, the shut-off device includes an outer casing and a rubber sleeve, the rubber casing is installed in the outer casing, the rubber casing has a water flow channel, and the water flow channel The upstream drainage pipeline and the downstream drainage pipeline are respectively connected through the water inlet and the water outlet;

When the shut-off device is inflated or filled with water, the rubber sleeve is deformed, the cross-sectional area of the water flow channel becomes smaller and cut off, the shut-off device is closed, and the upstream drainage pipe and its downstream drainage pipe are shut off. When air or water is released, the rubber sleeve recovers and deforms, the cross-sectional area of the water flow channel becomes larger and conducts, the shutoff device is opened, and the upstream drainage pipe is communicated with the downstream drainage pipe.

On the basis of the above technical solution, it also includes a control system: the control system includes a liquid level sensor and a controller, the liquid level sensors are respectively arranged upstream and downstream of the interception device, and are used to monitor the drainage upstream of the interception device. The level of the pipeline and the level of the downstream drain;

The controller is respectively connected to the liquid level sensor and the shut-off device. A liquid level difference threshold is set in the controller. The controller is used to control the shut-off device to be closed, and the drainage pipe upstream of the shut-off device is filled with water. , when the liquid level difference between the liquid level of the upstream drainage pipe of the interception device and the liquid level of the downstream drainage pipe monitored by the liquid level sensor reaches the liquid level difference threshold, the interception device is controlled to open, and the The drainage pipe upstream of the interception device stores water to flush the drainage pipe downstream of the interception device.

On the basis of the above technical solution, a flushing cycle is also set in the controller, and the flushing cycle refers to the time interval between the completion of one flushing of all the drainage pipes and the opening of the next flushing of all the drainage pipes. The drain pipe is controlled to be flushed periodically according to the flushing cycle.

On the basis of the above technical solution, the liquid level sensor is respectively installed in the inspection well communicated with the drainage pipeline upstream of the interception device and the inspection well communicated with the drainage pipeline downstream of the interception device.

On the basis of the above technical solution, one end of the outer casing is butted with the upstream drainage pipe, and the outer casing is at least partially installed in the water inlet;

Or, one end of the outer casing is butted with the downstream drainage pipe, and the outer casing is at least partially installed in the water outlet;

Or, the outer casing is located in the inspection well, and two ends of the outer casing are respectively connected to the upstream drainage pipe and the downstream drainage pipe;

Or, both ends of the outer casing are respectively provided with flange connection plates, and the two ends of the outer casing are connected to the drainage pipe through the flange connection plates.

Or, two ends of the outer casing are respectively provided with flange connection plates, one end of the outer casing is connected with the drainage pipe through the flange connection plates, and the other end of the outer casing is provided with a connecting sleeve, One end of the connection sleeve close to the outer casing is connected to the outer casing through the flange connection plate, and the other end of the connection sleeve is sleeved in the drainage pipe connected to it;

Or, one end of the outer casing is provided with a flange connection plate, and one end of the outer casing is connected to the end of the upstream drainage pipe or the downstream drainage pipe through the flange connection plate.

Based on the above technical solution, wherein, the rubber sleeve is restored to a non-deformed state, and the bottom of the water flow channel is flush with the bottom of the upstream or downstream drainage pipe.

On the basis of the above technical solution, it also includes: a gas station or a water station, a main conveying pipe, a conveying branch pipe and a solenoid valve, the main conveying pipe is connected with the gas station or the water station, and the inlet of each intercepting device is The conveying branch pipe is connected with the conveying main pipe, and each conveying branch pipe is provided with the electromagnetic valve;

Or, a plurality of gas stations or water stations, conveying branch pipes and solenoid valves, the inlet of each shut-off device is connected to one of the gas or water stations through the conveying branch pipe, and each of the conveying branch pipes is provided with the The electromagnetic valve.

Compared with the prior art, the advantages of the present utility model are as follows:

(1) In the flushing and maintenance system of the drainage pipe of the present invention, a shut-off device is arranged in the drainage pipe. The shut-off device comprises an outer casing and a rubber sleeve, and an air cavity or a water cavity is formed between the rubber sleeve and the outer casing. The deformation of the rubber sleeve controls the conduction or cut-off of the circulation channel, thereby controlling the closing or opening of the shut-off device. The mechanical structure is simple, the control is convenient, and there are few faults. It can meet the flood discharge requirements while completing the pipeline flushing.

(2) The outer casing in the flushing and maintenance system of the drainage pipeline of the present invention is connected with the drainage pipeline connected to it through the connecting sleeve. The flange connection plate is connected to the drainage pipe, and the connection sleeve is installed in the drainage pipe. When the shut-off device is hoisted in place, the outer end of the connection sleeve and the outer shell are connected through the flange connection plate, leaving enough installation space for convenient installation operation. The interception device is installed in the inspection well, no additional foundation excavation is required, and the construction efficiency is high and the construction cost is low.

(3) The shut-off device in the flushing and maintenance system of the drainage pipeline of the present utility model can also be used for blocking during maintenance. It has various uses, has a wide range of applications, does not require additional installation equipment, reduces maintenance costs, and is easy to operate. .

(4) The flushing and maintenance system of the drainage pipeline of the present invention can be controlled by the liquid level method and or the time method. When the upstream water storage height reaches the set liquid level, the interception device is opened to flush the drainage pipeline downstream of the interception device. , relying on the potential energy of the liquid level difference between the upstream and downstream of the shut-off device to instantaneously convert the kinetic energy of the flushing, flushing the downstream drainage pipes, the flushing effect is good, the regular automatic flushing, and the degree of automation is high.

Description of drawings

FIG. 1 is a schematic structural diagram of the utility model in a state of use.

FIG. 2 is a top view of an inspection well of the present invention.

FIG. 3 is a schematic structural diagram of the shut-off device installed at the inlet and outlet of the utility model.

FIG. 4 is a schematic structural diagram of the shut-off device installed at the water outlet in the present invention.

Reference numerals: 1- Inspection well, 10- Water inlet, 11- Water outlet, 2- Shut-off device, 20- Outer casing, 21- Rubber sleeve, 22- Water flow channel, 23- Flange connection plate, 24- Connection Casing, 3-Drain pipes.

Detailed ways

The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example 1

Referring to Figures 1 and 2, the present invention provides a flushing and maintenance system for a drainage pipeline, which has a drainage pipeline 3 arranged obliquely, and several inspection wells 1 and several intercepting devices 2 are arranged along the drainage pipeline 3 at intervals, wherein the intercepting device 2. The number of sets is set according to the inclination and length of the drainage pipe 3. In this embodiment, the inspection well 1 includes a well structure and a water inlet 10 connected to the upstream drainage pipe and a water inlet 10 connected to the downstream drainage pipe. The water outlet 11 is defined in this embodiment. When the drainage pipe conveys water, the water flow time at the location of the interception device 2 is used as the reference point. The pipe diameter that flows before this time is the upstream drainage pipe, and the water flow after this time The passing pipe diameter is the downstream drainage pipe.

A shut-off device 2 is installed in an inspection well 1. The shut-off device 2 includes an outer casing 20 and a rubber sleeve 21. The rubber casing 21 is installed in the outer casing 20, and an air cavity or an air cavity is formed between the rubber casing 21 and the outer casing 20. In the water cavity, the rubber sleeve 21 has a water flow channel 22. One end of the water flow channel 22 is connected to the upstream drainage pipe through the water inlet 10; the other end is connected to the downstream drainage pipe through the water outlet 11; The cross section of the integrated structure is annular, and an air cavity or a water cavity is arranged inside, and the rubber sleeve 21 is installed in the outer casing 20;

When the air cavity or the water cavity is inflated or filled with water, the rubber sleeve 21 is deformed, the cross-sectional area of the water flow channel 22 becomes smaller, and the upstream drainage pipe and the downstream drainage pipe are cut off. The cylinder 21 is restored to deformation, the cross-sectional area of the water flow channel 22 becomes larger, and the upstream drainage pipe of the shut-off device 2 is connected with the downstream drainage pipe, wherein the rubber sleeve 21 is restored to the non-deformed state. The bottom of the water flow channel 22 and the upstream drainage pipe Bottom flush.

Further, the connection between the outer casing 20 and the drainage pipe is as follows: flange connection plates 23 may be respectively provided at both ends of the outer casing 20 , and the two ends of the outer casing 20 are connected to the drainage pipe through the flange connection plates 23 . Preferably, as shown in FIG. 1 , the outer casing 20 is installed in the inspection well 1 , the upstream end of the outer casing 20 is connected to the upstream drainage pipe through the flange connection plate 23 , and the downstream or upstream end of the outer casing 20 is provided with a connection The sleeve 24, one end of the connecting sleeve 24 close to the outer casing 20 is connected with a section of the outer casing 20 through the flange connection plate 23, and the other end of the connecting sleeve 24 is sleeved in the drainage pipe connected with it. When the interception device 2 is installed, it is hoisted from the upper part of the inspection well 1 into the inspection well. One end of the outer casing 20 is connected to the drainage pipe through the flange connection plate 23, and the bottom of the rubber sleeve 21 is flush with the bottom of the upstream drainage pipe. The connection sleeve The barrel 21 smoothly connects the bottom of the rubber sleeve 21 with the bottom of the downstream drainage pipe. During installation, the connecting sleeve 24 is pre-installed in the drainage pipe. When the closure device 2 is hoisted in place, the outer end of the connecting sleeve 24 is The outer casing 20 is connected by the flange connection plate 23, leaving enough installation space, which is convenient for installation and operation, does not need to excavate the foundation, and has high construction efficiency and low cost. Referring to FIG. 3 , it can also be that the outer casing 20 is installed in the water inlet 10 , and the upstream end of the outer casing 20 is connected to the upstream drainage pipe through the flange connection plate 23 , and the downstream end of the outer casing 20 is located in the inspection well 2 . Inside. Referring to FIG. 4 , it is also possible that the outer casing 20 is installed in the water outlet 11 , and the downstream end of the outer casing 20 is connected to the downstream drainage pipe through the flange connection plate 23 , and the upstream end of the outer casing 20 is located in the inspection well 2 . Inside. As a modification of this embodiment, the connection between the outer casing 20 and the drainage pipe is diverse. In addition to the flange connection plate connection in this embodiment, the connection can also be performed by welding, clamping, coupling, or the like.

Further, the system also includes: a gas station or a water station, a main conveying pipe, a branched conveying pipe and a solenoid valve, the main conveying pipe is connected to the gas station or the water station, and the inlet of each interception device 2 is connected to the main conveying pipe through the conveying branch pipe , and each conveying branch pipe is provided with a solenoid valve. In this embodiment, a plurality of shut-off devices 2 jointly use a gas station or a water station, which saves energy and occupies a small area. Alternatively, several gas stations or water stations, conveying branch pipes and solenoid valves are provided, the inlet of each shut-off device 2 is connected to a gas station or water station through the conveying branch pipe, and each conveying branch pipe is provided with the electromagnetic valve.

Further, the system also includes a control system: the system includes a liquid level sensor and a controller, the liquid level sensors are respectively arranged upstream and downstream of the interception device 2 for monitoring the liquid level of the upstream drain pipe of the interception device 2 and the downstream drain pipe The controller is connected to the liquid level sensor and the interception device 2 respectively, the controller is provided with a liquid level difference threshold, the controller is used to control the closure of the interception device 2, the circulation channel 22 is closed, and the drainage pipe upstream of the interception device 2 is filled with water. The liquid level sensor monitors that the liquid level difference between the liquid level of the upstream drain pipe of the interception device 2 and the liquid level of the downstream drain pipe reaches the liquid level difference threshold, and controls the interception device 2 to open, the circulation channel 22 is turned on, and the accumulator in the upstream drain pipe is controlled. Water flushes the drain pipe downstream of the shut-off device 2 . The opening or closing of the shut-off device 2 is automatically controlled by the controller and the liquid level sensor, and the operation is simple and the degree of automation is high. The liquid level sensors in this embodiment are respectively installed in the inspection well communicated with the drainage pipeline upstream of the interception device 2 and in the inspection well communicated with the drainage pipeline downstream of the interception device 2 . The liquid level sensor in this embodiment is selected from the "Siemens Ultrasonic Level Gauge Selection Manual" according to the actual use, and the controller is selected from the "PLC Selection Manual" according to the actual use.

Further, a flushing cycle is also set in the controller, and the flushing cycle refers to the time interval between the completion of one flushing of all the drainage pipes and the opening of the next flushing of all the drainage pipes, and the controller is used for according to the flushing cycle. The drain pipe is controlled to be flushed regularly, and the controller starts timing from the opening of the last shut-off device. Set up regular automatic flushing to avoid silt accumulation in the drainage pipeline, ensure the flushing effect, and have a high degree of automation.

Example 2

The second embodiment provides a method for flushing a drainage pipeline. N intercepting devices 2 are arranged along the drainage pipeline. From downstream to upstream, there are a first intercepting device, a second intercepting device, ... an N-th intercepting device, and the drainage pipeline is divided into N+ Section 1, from downstream to upstream are the first section of drainage pipeline, the second section of the drainage pipeline...the N+1 section of the drainage pipeline;

S1, before flushing the nth section of the drainage pipe, the nth interception device is inflated or filled with water, the circulation channel is closed, and the other interception devices are in the open state, 1≤n≤N, the n+1 section of the drainage pipe and its upstream The drainage pipeline of n is filled with water, and the n-th drainage pipeline and its downstream drainage pipelines are emptied;

S2, the nth shut-off device bleeds or releases water, the circulation channel is opened, and the n+1st section of the drainage pipe and its upstream drainage pipes store water to flush the nth section of the drainage pipe and its downstream drainage pipes;

Repeat the steps of S1 and S2, and flush the first section of the drainage pipe, the second section of the drainage pipe to the Nth section of the drainage pipe from the downstream to the upstream in sequence, and complete the flushing of all the drainage pipes once.

Among them, the upstream and downstream of the nth interception device are provided with liquid level sensors, and the control method of S1 is as follows: the liquid level sensor monitors the liquid level upstream and downstream of the nth interception device in real time, which are the first liquid level value and the downstream Two liquid level values and calculate the difference between the first liquid level value and the second liquid level value to obtain the liquid level difference, and preset the liquid level difference threshold; when the liquid level difference reaches the liquid level difference threshold, control the nth interception device to deflate or The water is released, the circulation channel is opened, and the n+1 section of the drainage pipe and its upstream drainage pipes are filled with water to flush the n-th section of the drainage pipe and its downstream drainage pipes.

Further, when the Nth shutoff device is vented or discharged, the circulation channel is opened, and after the flushing of all the drainage pipes is completed, the controller again controls the first shutoff device to be inflated or filled with water, the circulation channel is closed, and the upstream of the first shutoff device. The drainage pipe stores water and prepares for the next flushing; the controller starts timing from the completion of air or water discharge from the shutoff device of the Nth shutoff device, and when the timing reaches the set flushing cycle, it enters the next flushing cycle.

Example 3

This embodiment provides a maintenance method for a drainage pipeline. Using the flushing and maintenance system of the drainage pipeline in Example 1, an N interception device 2 is arranged along the drainage pipeline, and the first interception device and the second interception device are sequentially from downstream to upstream. The Nth interception device divides the drainage pipeline into N+1 sections, and from the downstream to the upstream, the first section of the drainage pipeline, the second section of the drainage pipeline...the N+1 section of the drainage pipeline;

When overhauling the nth section of the drainage pipe as needed, the nth interception device and the n+1th interception device are inflated or closed with water, and the nth section of the drainage pipe is cut off at its upstream and downstream drainage pipes respectively, and the nth section of the drainage pipe is closed. empty;

When overhauling certain sections of continuous drainage pipelines as needed, close the interception devices near the most downstream end and the most upstream end of the drainage pipeline, and empty the drainage pipeline.

Those skilled in the art can make various modifications and variations to the embodiments of the present invention. If these modifications and variations are within the scope of the claims of the present invention and its equivalent technology, these modifications and variations are also protected by the present invention. within the range.

The content not described in detail in the specification is the prior art known to those skilled in the art.

Claims (7)

1. A washing and maintenance system of a drainage pipeline, having a drainage pipeline (3) arranged obliquely, characterized in that: a plurality of inspection wells (1) and a plurality of cut-off devices (2) are arranged at intervals along the drainage pipeline (3),

the inspection well (1) is provided with a water inlet (10) connected with an upstream drainage pipeline and a water outlet (11) connected with a downstream drainage pipeline;

the cut-off device (2) is installed in the inspection well (1), the cut-off device (2) comprises an outer shell (20) and a rubber sleeve (21), the rubber sleeve (21) is installed in the outer shell (20), the rubber sleeve (21) is provided with a water flow channel (22), and the water flow channel (22) is respectively communicated with an upstream drainage pipeline and a downstream drainage pipeline through the water inlet (10) and the water outlet (11);

when cut-off equipment (2) is aerifyd or is filled water, rubber sleeve (21) deformation, the sectional area of rivers passageway (22) diminishes and ends, cut-off equipment (2) are closed, and upper reaches drainage pipe ends rather than the low reaches drain pipe, works as cut-off equipment (2) gassing or when putting water, rubber sleeve (21) resume deformation, the sectional area grow of rivers passageway (22) switches on, cut-off equipment (2) are opened, and upper reaches drainage pipe switches on rather than low reaches drainage pipe.

2. The system for flushing and repairing a drain pipe of claim 1, further comprising a control system: the control system comprises a liquid level sensor and a controller, wherein the liquid level sensor is respectively arranged at the upstream and the downstream of the cut-off device (2) and is used for monitoring the liquid level of an upstream drainage pipeline and the liquid level of a downstream drainage pipeline of the cut-off device (2);

the controller is connected respectively level sensor with cut-off equipment (2), be equipped with liquid level difference threshold value in the controller, the controller is used for control cut-off equipment (2) are closed, cut-off equipment (2) upper reaches drainage pipe retaining works as liquid level sensor monitors the liquid level of cut-off equipment (2) upper reaches drainage pipe and the liquid level difference value of the liquid level of low reaches drainage pipe reach liquid level difference threshold value, control should cut-off equipment (2) are opened, cut-off equipment (2) upper reaches drainage pipe retaining washes this cut-off equipment (2) low reaches drainage pipe.

3. The system for flushing and overhauling a drainage pipeline according to claim 2, wherein a flushing cycle is further arranged in the controller, the flushing cycle refers to a time interval between the completion of one flushing of all the drainage pipelines and the next flushing of all the drainage pipelines and is opened, and the controller is used for controlling the drainage pipelines to be flushed regularly according to the flushing cycle.

4. The system for flushing and repairing a drainage pipeline according to claim 2, wherein:

the liquid level sensor is respectively arranged in an inspection well communicated with an upstream drainage pipeline of the cut-off device (2) and an inspection well communicated with a downstream drainage pipeline of the cut-off device (2).

5. The system for flushing and repairing a drainage pipeline according to claim 1, wherein: one end of the outer shell (20) is in butt joint with an upstream drainage pipeline, and the outer shell (20) is at least partially arranged in the water inlet (10);

or one end of the outer shell (20) is in butt joint with a downstream drainage pipeline, and the outer shell is at least partially arranged in the water outlet (11);

or the outer shell (20) is positioned in the inspection well (1), and two ends of the outer shell (20) are respectively in butt joint with an upstream drainage pipeline and a downstream drainage pipeline;

or two ends of the outer shell (20) are respectively provided with a flange connecting disc (23), and two ends of the outer shell (20) are connected with the drainage pipeline through the flange connecting discs (23);

or both ends of the outer shell (20) are respectively provided with a flange connecting disc (23), one end of the outer shell (20) is connected with the drainage pipeline through the flange connecting disc (23), the other end of the outer shell (20) is provided with a connecting sleeve (24), one end of the connecting sleeve (24) close to the outer shell (20) is connected with the outer shell (20) through the flange connecting disc (23), and the other end of the connecting sleeve (24) is sleeved in the drainage pipeline connected with the connecting sleeve;

or one end of the outer shell (20) is provided with a flange connection disc, and one end of the outer shell (20) is connected with the end part of the upstream drainage pipeline or the downstream drainage pipeline through the flange connection disc (23).

6. The system for flushing and repairing a drainage pipeline according to claim 5, wherein:

wherein the rubber sleeve (21) is restored to a non-deformation state, and the bottom of the water flow channel (22) is flush with the bottom of the upstream or downstream drainage pipeline.

7. The system for flushing and repairing a drain pipe of claim 1, further comprising: the system comprises a gas station or a water station, a conveying main pipe, conveying branch pipes and electromagnetic valves, wherein the conveying main pipe is connected with the gas station or the water station, an inlet of each cut-off device (2) is connected with the conveying main pipe through the conveying branch pipe, and each conveying branch pipe is provided with the electromagnetic valve;

or, a plurality of gas stations or water stations, delivery branch pipes and electromagnetic valves, wherein the inlet of each cut-off device (2) is connected with one gas station or water station through the delivery branch pipe, and each delivery branch pipe is provided with the electromagnetic valve.

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