CN112780955B - Pipeline leakage signal vibration trigger device and conversion method - Google Patents
Pipeline leakage signal vibration trigger device and conversion method Download PDFInfo
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- CN112780955B CN112780955B CN202110053089.8A CN202110053089A CN112780955B CN 112780955 B CN112780955 B CN 112780955B CN 202110053089 A CN202110053089 A CN 202110053089A CN 112780955 B CN112780955 B CN 112780955B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
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Abstract
The invention discloses a pipeline leakage signal vibration trigger device and a conversion method, wherein the device comprises: the positive trigger electrode is connected to the positive electrode of the button battery through a lead, and the negative trigger electrode is connected to the negative electrode of the button battery through a lead and a vibration motor; the telescopic push rod is located the filter screen with between the elastic diaphragm, the elastic diaphragm opposite side has set gradually negative trigger electrode, positive trigger electrode button battery with vibrating motor. The method comprises the following steps: fixing the distributed optical cable on the outer surface of the pipeline, and then installing the vibration trigger device on the distributed optical cable, wherein the vibration trigger device is positioned in a pipeline socket during installation; the vibration trigger device converts the leakage signal into a vibration signal to trigger the distributed optical cable to vibrate, so that the leakage point is positioned through the optical cable vibration signal.
Description
Technical Field
The invention relates to the field of pipeline leakage detection, in particular to a pipeline leakage signal vibration trigger device and a pipeline leakage signal vibration trigger conversion method.
Background
In urban water delivery networks, daily maintenance and troubleshooting of various pipelines buried underground are indispensable works. Especially, the positioning of micro-leakage and seepage of the pipeline becomes the center of gravity of research of various pipeline detection methods. The main method for detecting the leakage of the water conveying pipeline at present is acoustic detection (including inner hearing and outer hearing). However, this method cannot be used to accurately locate a leak in a small amount or in the event of a leak in the pipe.
Distributed optical cable early warning systems have played an important role in petroleum pipeline monitoring and early warning all the time. However, the method can only detect vibration signals with distinct characteristics, such as manual excavation, pipe bursting and the like, and is not popularized to a detection task of leakage of a water pipeline at present, particularly to positioning of micro leakage and seepage of the pipeline.
Disclosure of Invention
The invention provides a pipeline leakage signal vibration triggering device and a conversion method, the invention designs a leakage triggering vibration device by utilizing the characteristic that a distributed optical cable is sensitive to a vibration signal and based on the idea of converting the leakage signal into the vibration signal, and the device is used for triggering the vibration of the distributed optical cable, thereby improving the sensitivity of a distributed optical cable early warning system when the distributed optical cable early warning system is used for detecting the leakage of a water pipeline, and the detailed description is as follows:
in a first aspect, a pipe leakage signal vibration trigger device comprises: a shell body, a plurality of first connecting rods and a plurality of second connecting rods,
an upper cover is arranged above the shell, a bottom cover is arranged at the bottom of the shell, and a water inlet hole and a filter screen are arranged on one side of the shell;
the shell is internally provided with a button battery, a vibration motor, a positive trigger electrode, a negative trigger electrode, an elastic membrane and a telescopic push rod;
the positive trigger electrode is connected to the positive electrode of the button battery through a lead, and the negative trigger electrode is connected to the negative electrode of the button battery through a lead and a vibration motor;
the telescopic push rod is located the filter screen with between the elastic diaphragm, the elastic diaphragm opposite side has set gradually negative trigger electrode, positive trigger electrode button battery with vibrating motor.
Preferably, the elastic membrane is made of a TPE elastic material.
In a second aspect, a method of converting a pipeline leakage signal, the method comprising the steps of:
fixing the distributed optical cable on the outer surface of the pipeline, and then installing the vibration trigger device on the distributed optical cable, wherein the vibration trigger device is positioned in a pipeline socket during installation;
the vibration trigger device converts the leakage signal into a vibration signal to trigger the distributed optical cable to vibrate, so that the leakage point is positioned through the optical cable vibration signal.
Wherein, the first and the second end of the pipe are connected with each other,
moisture in the soil passes through the filter screen from the water inlet hole to filter impurities and then reaches the cavity where the telescopic push rod is located;
the telescopic push rod is made of water-absorbing expansion rubber, and the structure expands when meeting water to push the elastic membrane to move towards the negative trigger electrode;
the elastic membrane is contacted with the negative trigger electrode and then transmits acting thrust to push the negative trigger electrode to move and contact with the positive trigger electrode to form a closed loop; the vibration motor works to drive the distributed optical cable to vibrate.
Preferably, the number of installed vibration inducing devices is determined by the total length of the distribution cable.
The technical scheme provided by the invention has the beneficial effects that:
1. the invention avoids various defects of the traditional positioning method, designs a device based on leakage induced vibration and is used for exciting the vibration of the distributed optical cable;
2. the invention can convert the leakage signal into the distributed pipeline vibration signal, thereby realizing the purpose of positioning the leakage point by using the distributed optical cable.
Drawings
FIG. 1 is a schematic illustration of a vibration-inducing device mounted on a distribution cable;
FIG. 2 is a view showing the internal structure of the vibration actuator;
fig. 3 is a layout view of the vibration trigger device on the pipeline.
In the drawings, the components are represented in the following list:
1: an upper cover; 2: a water inlet hole;
3: a distributed optical cable; 4: a bottom cover;
5: a housing; 6: a button cell;
7: a vibration motor; 8: a positive trigger electrode;
9: a negative trigger electrode; 10: an elastic diaphragm;
11: a telescopic push rod; 12: filtering with a screen;
13: a pipeline; 14: a pipe bell and spigot;
15: and (5) vibrating the trigger device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in further detail below.
Example 1
In order to achieve the above purpose, referring to fig. 1 and 2, an embodiment of the present invention provides a vibration trigger device, which adopts a technical solution to convert a leakage signal into a vibration signal, so as to trigger vibration of a distributed optical cable, thereby locating a leakage point through the optical cable vibration signal.
Referring to fig. 1 and 2, the vibration trigger device 15 mainly includes: the device comprises an upper cover 1, a water inlet 2, a bottom cover 4, a shell 5, a button cell 6, a vibration motor 7, a positive trigger electrode 8, a negative trigger electrode 9, an elastic membrane 10, a telescopic push rod 11 and a filter screen 12.
During the concrete realization, above-mentioned button cell 6 adopts the model of ARTHYLY brand to be CR 1220's battery, and vibrating motor 7 adopts the 0830 motor of TEJIATE brand, and elastic diaphragm adopts TPE elastic material, and flexible push rod 11 adopts the water-swelling rubber of Ruida rubber and plastic brand as the raw materials, and filter screen 12 adopts the sidebao to spout cloth filter screen of borduring.
In the embodiment of the present invention, except for the specific description of the model of each device, the model of other devices is not limited as long as the device can perform the above functions.
Example 2
The embodiment of the invention provides a pipeline leakage signal conversion method, and referring to fig. 3, the method comprises the following steps:
the technical characteristics involved in implementing the positioning method mainly include the following: the distributed optical cable 3, the pipe 13, the pipe socket 14 (pipe natural interface), and the vibration triggering device 15 in embodiment 1.
The implementation method comprises the following steps:
the distribution cable 3 is first secured to the outer surface of the pipe 13 and the vibration inducing device 15 is then installed on the distribution cable 3 as shown in fig. 3. When the device is installed, the vibration trigger device 15 is ensured to be positioned at the pipeline socket 14.
In practical application, the bottom cover 4 is firstly unloaded, the distributed optical cable 3 is clamped in the U-shaped groove below the vibration trigger device 15, and the bottom cover 4 is installed.
Further, the number of vibration generating devices 15 installed is determined by the total length of the distribution cable 3. Assuming that the total length of the distribution optical cable 3 is 10 km and each section of the pipe 13 is 10 m long, the number of installations can be calculated to be 1000.
When a leak occurs at a pipe socket 14 where the surrounding soil is filled with a leakage water, the vibration-inducing device 15 installed on the distribution type optical fiber cable 3 is soaked in the water. At this time, the vibration triggering device 15 is triggered to generate mechanical vibration, and the distributed optical cable 3 is driven to vibrate accordingly. The vibration signal is transmitted to an upper computer by the distributed optical cable 3 as a leakage signal at the pipe socket 14, so that the accurate position of the vibration signal is judged.
The working principle of the vibration device is as follows: when the vibration trigger device 15 is soaked in the leakage water, the water in the soil passes through the filter screen 12 from the water inlet hole 2 to filter impurities and then reaches the chamber where the telescopic push rod 11 is located. The telescopic push rod 11 is made of water-absorbing expansion rubber, the structure expands after meeting water, the elastic membrane 10 beside the telescopic push rod is pushed to move towards the negative trigger electrode 9, and the elastic membrane 10 transmits action thrust after contacting the negative trigger electrode 9, so that the negative trigger electrode 9 is pushed to move and is contacted with the positive trigger electrode 8. The positive trigger electrode 8 is connected to the positive electrode of the button cell 6 through a lead, and the negative trigger electrode 9 is connected to the negative electrode of the button cell 6 through the vibration motor 7 to form a closed loop. After the anode and the cathode are contacted, the whole loop generates current, the vibration motor 7 works, and the vibration trigger device 15 drives the distributed optical cable 3 to vibrate.
The frequency of the vibration of the distributed optical cable 3 is determined by the frequency of the vibration motor 7, the vibration frequency of the vibration motor in the embodiment of the present invention is illustrated by taking 180Hz/s as an example, and the embodiment of the present invention is not limited thereto.
Those skilled in the art will appreciate that the drawings are only schematic illustrations of preferred embodiments, and the above-described embodiments of the present invention are merely provided for description and do not represent the merits of the embodiments.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (2)
1. A vibration trigger device for a pipeline leakage signal, the device utilizing the characteristic that a distributed optical cable is sensitive to a vibration signal to trigger the distributed optical cable to vibrate at a specific frequency, so as to improve the alarm accuracy of a distributed optical cable early warning system when the distributed optical cable early warning system is used for detecting the leakage of a water pipeline, the device being based on leakage-induced vibration and used for exciting the distributed optical cable to vibrate, the device comprising: a shell body, a plurality of first connecting rods and a plurality of second connecting rods,
an upper cover is arranged above the shell, a bottom cover is arranged at the bottom of the shell, and a water inlet hole and a filter screen are arranged on one side of the shell;
the shell is internally provided with a button battery, a vibration motor, a positive trigger electrode, a negative trigger electrode, an elastic membrane and a telescopic push rod;
the positive trigger electrode is connected to the positive electrode of the button battery through a lead, and the negative trigger electrode is connected to the negative electrode of the button battery through a lead and a vibration motor;
the telescopic push rod is located the filter screen with between the elastic diaphragm, the elastic diaphragm opposite side has set gradually negative trigger electrode, positive trigger electrode button battery with vibrating motor.
2. A method of converting a pipeline leakage signal, the method being based on the vibration-triggered device of claim 1, the method comprising the steps of:
fixing the distributed optical cable on the outer surface of the pipeline, and then installing the vibration trigger device on the distributed optical cable, wherein the vibration trigger device is positioned at the socket of the pipeline during installation;
when leakage occurs at a certain pipeline bell and spigot, the soil around the certain pipeline bell and spigot is full of leakage water, the vibration trigger device is soaked in water, the vibration trigger device is triggered to generate mechanical vibration to drive the distributed optical cable to vibrate along with the vibration, the vibration signal is used as a leakage signal at the pipeline bell and spigot, the leakage signal is transmitted to an upper computer by the distributed optical cable, the leakage signal is converted into a vibration signal of the distributed optical fiber, the distributed optical cable is triggered to vibrate at the frequency of the vibration motor, and therefore the leakage position of the pipeline is accurately identified and positioned through the vibration signal of the specific frequency of the optical cable;
when the vibration trigger device is soaked in leakage water, water in soil passes through the filter screen from the water inlet hole to filter impurities and then reaches the cavity where the telescopic push rod is located;
the telescopic push rod is made of water-absorbing expansion rubber, and the structure expands when meeting water to push the elastic membrane to move towards the negative trigger electrode;
the elastic membrane is contacted with the negative trigger electrode and then transmits acting thrust to push the negative trigger electrode to move and contact with the positive trigger electrode, the positive trigger electrode is connected to the positive electrode of the button battery through a lead, and the negative trigger electrode is connected to the negative electrode of the button battery through a vibration motor to form a closed loop; after the anode and the cathode are contacted, the whole loop generates current, the vibration motor works, and the vibration motor works to drive the distributed optical cable to vibrate.
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Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201273456Y (en) * | 2008-09-27 | 2009-07-15 | 中国石油天然气股份有限公司 | Stress wave and optical fiber sensing compound pipe security early-warning system |
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| CN101280677A (en) * | 2007-03-13 | 2008-10-08 | 普拉德研究及开发股份有限公司 | A flow control assembly having a fixed flow control device and an adjustable flow control device |
| CN204666308U (en) * | 2015-06-24 | 2015-09-23 | 成都誉华科技有限公司 | A kind of trigger-type fibre-optical sensing device responsive to oil |
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