CN111322459A - Pipeline vibration generator and control method thereof, pipeline positioning device and positioning method - Google Patents
Pipeline vibration generator and control method thereof, pipeline positioning device and positioning method Download PDFInfo
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- CN111322459A CN111322459A CN202010243514.5A CN202010243514A CN111322459A CN 111322459 A CN111322459 A CN 111322459A CN 202010243514 A CN202010243514 A CN 202010243514A CN 111322459 A CN111322459 A CN 111322459A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
- F16L1/11—Accessories therefor, e.g. anchors for the detection or protection of pipes in the ground
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/18—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency wherein the vibrator is actuated by pressure fluid
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses a pipeline vibration generator and a control method thereof, a pipeline positioning device and a positioning method thereof, wherein the pipeline vibration generator comprises a main pipe, a first valve and a discharge pipe; the end part of the main pipe close to the discharge pipe is a connecting end used for being communicated with a pipeline to be tested; the front end of the discharge pipe is communicated between the connecting end and the first valve, and the tail end of the discharge pipe extends in the direction away from the main pipe and forms a discharge hole; the hole diameter of the discharge hole is smaller than the inner diameter of the discharge pipe; the control method comprises the following steps: after the pipeline vibration generator is connected to the pipeline to be tested, the first valve is controlled to be opened and closed according to the preset frequency, so that the fluid in the pipeline to be tested flows out through the discharge hole of the discharge pipe to generate a pulse vibration signal acting on the pipeline to be tested. The invention aims to make a pipeline to be detected connected with a pipeline vibration generator vibrate, and simultaneously meet the positioning requirements of a metal pipeline and a nonmetal pipeline in a vibration signal detection mode.
Description
Technical Field
The invention relates to the technical field of pipeline positioning, in particular to a control method of a pipeline vibration generator, the pipeline vibration generator, a pipeline positioning method and a pipeline positioning device.
Background
The urban underground pipeline is the blood vessels and nerves of the city and is the guarantee of the normal operation of the city. In the prior art, the trend of underground pipelines is unclear and data are incomplete due to various reasons, and safety accidents are easily caused by unclear current situations of the underground pipelines in the urban construction process. With the increasing urbanization in recent years, accidents such as damage to pipelines can easily occur if the trend of pipelines is not known in the process of construction. The pipeline detection instrument in the related art is generally suitable for metal pipelines, and utilizes the electromagnetic induction technology to carry out pipeline detection, but detects the pipeline to non-metal pipeline electromagnetic induction and then needs to be surveyed with the help of other instruments, therefore, the pipeline detection instrument in the related art can't satisfy the location demand of metal pipeline and non-metal pipeline simultaneously.
Disclosure of Invention
The invention mainly aims to provide a control method of a pipeline vibration generator, which aims to enable a pipeline to be detected connected with the pipeline vibration generator to vibrate and meet the positioning requirements of a metal pipeline and a nonmetal pipeline simultaneously in a vibration signal detection mode.
In order to achieve the above object, in the method for controlling a pipe vibration generator according to the present invention, the pipe vibration generator includes a main pipe, and a first valve and a discharge pipe disposed on the main pipe, and the first valve and the discharge pipe are respectively disposed between two ends of the main pipe at an interval; the end part of the main pipe close to the discharge pipe is a connecting end used for being communicated with a pipeline to be tested; the front end of the discharge pipe is communicated between the connecting end and the first valve, and the tail end of the discharge pipe extends in the direction away from the main pipe and is provided with a discharge hole; the hole diameter of the discharge hole is smaller than the inner diameter of the discharge pipe; the control method of the pipeline vibration generator comprises the following steps:
after the pipeline vibration generator is connected to a pipeline to be detected, the first valve is controlled to be opened and closed according to a preset frequency, so that fluid in the pipeline to be detected flows out through the discharge hole of the discharge pipe to generate a pulse vibration signal acting on the pipeline to be detected.
Preferably, the pipe vibration generator further includes a second valve connected to the main pipe, the second valve being disposed between the first valve and the connection end; after the pipeline vibration generator is connected to a pipeline to be tested, the opening and closing of the first valve are controlled according to a preset frequency, so that fluid in the pipeline to be tested flows out through the discharge hole of the discharge pipe to generate a pulse vibration signal acting on the pipeline to be tested, and the method further comprises the following steps:
and after the pipeline vibration generator is connected to the pipeline to be tested, controlling the second valve to be opened.
Preferably, the pipe vibration generator includes a plurality of the discharge pipes, each of which has a discharge hole having a different hole diameter; the control method of the pipeline vibration generator further comprises the following steps:
determining the discharge pipe connected to the main pipe according to the inner diameter of the pipeline to be measured and the fluid transmission speed;
adjusting the preset frequency according to at least one of an inner diameter of the pipe to be measured, a fluid transfer speed, and a discharge hole aperture of the discharge pipe connected to the main pipe.
In order to achieve the above object, the present invention further provides a pipe vibration generator, which employs the control method of the pipe vibration generator according to any one of the above aspects; the pipeline vibration generator comprises a main pipe, a first valve and a discharge pipe, wherein the first valve and the discharge pipe are arranged on the main pipe, and the first valve and the discharge pipe are respectively arranged between two ends of the main pipe at intervals; the end part of the main pipe close to the discharge pipe is a connecting end used for being communicated with a pipeline to be tested; the front end of the discharge pipe is communicated between the connecting end and the first valve, and the tail end of the discharge pipe extends in the direction away from the main pipe and is provided with a discharge hole; the hole diameter of the discharge hole is smaller than the inner diameter of the discharge pipe.
Preferably, the first valve is a solenoid valve, and the first valve is in signal connection with the controller.
Preferably, the pipe vibration generator further includes a second valve connected to the main pipe, the second valve being disposed between the first valve and the connection end.
In order to achieve the above object, the present invention further provides a pipe positioning method applied to a pipe positioning device, where the pipe positioning device includes a vibration sensor and a pipe vibration generator as described in any one of the above; the pipeline positioning method comprises the following steps:
after the pipeline vibration generator is connected to a pipeline to be tested, the first valve is controlled to be opened and closed according to a preset frequency, so that fluid in the pipeline to be tested flows out through a discharge hole of the discharge pipe to generate a pulse vibration signal acting on the pipeline to be tested;
and acquiring each vibration signal detected by the vibration sensor at the periphery of the pipeline to be detected and each detection position point corresponding to the vibration signal so as to position the laying route of the pipeline to be detected.
Preferably, after the pipe vibration generator is connected to a pipe to be tested, before the step of controlling the first valve to open and close according to a preset frequency so that the fluid in the pipe to be tested flows out through the discharge hole of the discharge pipe to generate a pulse vibration signal acting on the pipe to be tested, the method further includes:
determining the position of a fluid transportation starting point of the pipeline to be detected, and determining the positions of all interfaces from the fluid transportation starting point to the end point of the pipeline to be detected from near to far so as to determine all detection sections of the pipeline to be detected;
respectively installing the pipeline vibration generators on the external interfaces of the detection sections;
the step of obtaining each vibration signal detected by the vibration sensor at the periphery of the pipeline to be detected and each detection position point corresponding to the vibration signal so as to position the laying route of the pipeline to be detected comprises the following steps:
and acquiring each vibration signal detected by the vibration sensor at each detection section and a detection position point corresponding to each vibration signal so as to position the laying route of the pipeline to be detected.
Preferably, the step of obtaining each vibration signal detected by the vibration sensor at each detection section and a detection position point corresponding to each vibration signal to position the laying route of the pipeline to be detected includes:
acquiring each vibration signal detected by the vibration sensor at each detection section and a detection position point corresponding to each vibration signal so as to position the laying route of the pipeline to be detected of each detection section;
and connecting the laying route of the pipeline to be detected of each detection section to position the laying route of the pipeline to be detected.
In order to achieve the above object, the present invention further provides a pipeline positioning device, which includes a vibration sensor and the pipeline vibration generator as described in any one of the above embodiments, wherein the pipeline vibration generator is used for connecting to a pipeline to be detected to vibrate the pipeline to be detected, and the vibration sensor is used for detecting a pipeline vibration signal generated after the pipeline vibration generator is connected to the pipeline to be detected.
In the technical scheme of the invention, when the routing of the pipeline to be detected needs to be detected, the pipeline vibration generator is connected into the pipeline to be detected, fluid (such as water flow) in the pipeline to be detected flows into the pipeline vibration generator from the connecting end of the main pipe, the first valve is controlled to be closed, the fluid can only flow out from the discharge hole of the discharge pipe, and the aperture of the discharge hole is smaller than the inner diameter of the discharge pipe, so that the fluid generates higher pressure to generate vibration when passing through the discharge hole, and vibration signals are transmitted along the pipeline to be detected, the vibration signals detected right above the pipeline to be detected are stronger, and the vibration signals are gradually weakened as the distance from the pipeline to be detected is farther, therefore, after the pipeline vibration generator is connected with the pipeline to be detected, the vibration signals are generated by the action of the change of the fluid pressure on the pipeline to be detected, namely, the vibration signals can be further detected between the starting point and the end point of the, the device for positioning the pipeline by enabling the pipeline to be tested to generate the vibration signal is beneficial to meeting the positioning requirements of the metal pipeline and the nonmetal pipeline.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of a pipe vibration generator according to the present invention;
FIG. 2 is a flowchart of a first embodiment of a method of controlling a pipe vibration generator according to the present invention;
FIG. 3 is a schematic view of the operation of the pipe positioner of the present invention;
fig. 4 is a signal transmission diagram of the pipe positioner according to the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | |
11 | Connecting |
| 2 | |
3 | |
| 31 | |
4 | |
| 5 | |
6 | Pipeline to be tested |
| 7 | |
8 | |
| 81 | |
82 | Earphone set |
| 10 | Pipeline vibration generator |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 and 2, a first embodiment of the present invention provides a method for controlling a pipe vibration generator 10, where the pipe vibration generator 10 includes a main pipe 1, and a first valve 2 and a discharge pipe 3 disposed on the main pipe 1, and the first valve 2 and the discharge pipe 3 are respectively disposed between two ends of the main pipe 1 at intervals; the end part of the main pipe 1 close to the discharge pipe 3 is a connecting end 11 used for being communicated with a pipeline 6 to be measured; the front end of the discharge pipe 3 is communicated between the connecting end 11 and the first valve 2, and the tail end of the discharge pipe 3 extends in a direction departing from the main pipe 1 and is provided with a discharge hole 31; the hole diameter of the discharge hole 31 is smaller than the inner diameter of the discharge pipe 3; the control method of the pipe vibration generator 10 includes the following steps:
and step S11, after the pipe vibration generator 10 is connected to the pipe 6 to be tested, controlling the first valve 2 to open and close according to a preset frequency, so that the fluid in the pipe 6 to be tested flows out through the discharge hole 31 of the discharge pipe 3 to generate a pulse vibration signal acting on the pipe 6 to be tested.
In the technical scheme of the invention, when the routing of the pipeline 6 to be tested needs to be tested, the pipeline vibration generator 10 is connected to the pipeline 6 to be tested, fluid (such as water flow) in the pipeline 6 to be tested flows into the pipeline vibration generator 10 from the connecting end 11 of the main pipe 1, the first valve 2 is controlled to be closed, the fluid can only flow out from the discharge hole 31 of the discharge pipe 3, because the aperture of the discharge hole 31 is smaller than the inner diameter of the discharge pipe 3, the fluid generates higher pressure to generate vibration when passing through the discharge hole 31, so that a vibration signal is transmitted along the pipeline 6 to be tested, the vibration signal detected right above the pipeline 6 to be tested is stronger, and the vibration signal is gradually weakened as the distance from the pipeline 6 to be tested is farther, therefore, after the pipeline vibration generator 10 of the invention is connected with the pipeline 6 to be tested, the vibration signal is generated by the action of the change of the fluid pressure on the pipeline, can further detect through vibration sensor 7 and detect the vibration signal between the starting point and the terminal point of the pipeline 6 that awaits measuring to confirm the line of walking of the pipeline that awaits measuring, this kind is through making the pipeline 6 that awaits measuring produce the device that vibration signal carries out the pipeline location, is favorable to satisfying the location demand of metal pipeline and non-metal pipeline simultaneously.
Specifically, the first valve 2 is an electromagnetic valve, and the first valve 2 is in signal connection with the controller 4; the opening and closing of the first valve 2 are controlled according to a preset frequency, which can further be: the controller 4 controls the first valve 2 to open and close according to a preset frequency.
The invention may be applied to the positioning of liquid or gas transport pipelines, for example for the positioning of water mains.
Based on the first embodiment of the method for controlling the pipe vibration generator 10 according to the present invention, in the second embodiment of the method for controlling the pipe vibration generator 10 according to the present invention, the pipe vibration generator 10 further includes a second valve 5 connected to the main pipe 1, the second valve 5 being disposed between the first valve 2 and the connection end 11; before step S11, the method further includes:
and step S12, after the pipe vibration generator 10 is connected to the pipe 6 to be tested, controlling the second valve 5 to open.
Specifically, after the pipe vibration generator 10 is connected to the pipe 6 to be measured, when the pipe is not required to be positioned, the second valve 5 may be closed to cut off the fluid, so as to stop the generation of the fluid pulse signal at any time. When the pipeline positioning is needed, the second valve 5 is opened, and the controller 4 alternately controls the first valve 2 to be opened and closed, so that the pipeline 6 to be tested vibrates to facilitate the pipeline positioning through the acquisition of vibration signals.
Based on the first embodiment of the control method of the pipe vibration generator 10 of the present invention, and the third embodiment of the control method of the pipe vibration generator 10 of the present invention, the pipe vibration generator 10 includes a plurality of the discharge pipes 3, and the discharge holes 31 of each of the discharge pipes 3 are different in hole diameter; the control method of the pipe vibration generator 10 further includes the steps of:
step S13, determining the discharge pipe 3 connected to the main pipe 1 according to the inner diameter of the pipe 6 to be measured and the fluid transfer rate;
step S14, adjusting the preset frequency according to at least one of the inner diameter of the pipe 6 to be measured, the fluid transfer speed, and the hole diameter of the discharge hole 31 of the discharge pipe 3 connected to the main pipe 1.
Set up a plurality of discharge pipes 3 of different apertures, be favorable to realizing different outflow pressure to produce different vibration signals, and the aperture of discharge pipe 3 is selected, can be confirmed according to the internal diameter of the pipeline 6 that awaits measuring. For example, the larger the inner diameter of the pipe 6 to be measured is, the larger the diameter of the discharge pipe 3 of the discharge hole 31 can be selected; the smaller the inner diameter of the pipeline 6 to be measured is, the smaller the aperture of the discharge hole 31 can be selected to be the discharge pipe 3; the discharge pipe 3 having a small hole diameter of the discharge hole 31 can be selected when the flow rate of the fluid is slow, and the discharge pipe 3 having a large hole diameter of the discharge hole 31 can be selected when the flow rate of the fluid is fast.
In order to achieve the above object, the present invention further provides a pipe vibration generator 10, which applies the control method of the pipe vibration generator 10 as described in any one of the above; the pipeline vibration generator 10 comprises a main pipe 1, and a first valve 2 and a discharge pipe 3 which are arranged on the main pipe 1, wherein the first valve 2 and the discharge pipe 3 are respectively arranged between two ends of the main pipe 1 at intervals; the end part of the main pipe 1 close to the discharge pipe 3 is a connecting end 11 used for being communicated with a pipeline 6 to be measured; the front end of the discharge pipe 3 is communicated between the connecting end 11 and the first valve 2, and the tail end of the discharge pipe 3 extends in a direction departing from the main pipe 1 and is provided with a discharge hole 31; the hole diameter of the discharge hole 31 is smaller than the inner diameter of the discharge pipe 3.
The main pipe 1, the discharge pipe 3 and the pipeline 6 to be measured are not limited in material, and may be metal pipes or nonmetal pipes.
Preferably, the first valve 2 is a solenoid valve, and the first valve 2 is in signal connection with the controller 4. The first valve 2 is controlled to be opened and closed by the controller 4 at a set frequency, and the set frequency can be adjusted according to at least one of the inner diameter of the pipe 6 to be measured, the fluid transfer rate, and the hole diameter of the discharge hole 31 of the discharge pipe 3 connected to the main pipe 1. When the first valve 2 is closed, the fluid flows out of the discharge hole 31 to form a sharp vibration signal; when the first valve 2 is closed, fluid flows out of the main pipe 1, forming a gentle signal. The rapid vibration signal and the slow signal are alternated according to the set frequency to form a pulse signal with a distinct characteristic, so that a user can rapidly distinguish the pulse signal formed by the pipeline vibration generator 10 from other surrounding signals in the vibration signal acquisition process, and the detection accuracy is obviously improved.
Further, the discharge pipe 3 is a variable diameter pipe, the inner diameter of the discharge pipe 3 is gradually reduced from the tip to the tip, and the inner diameter of the main pipe 1 is at least 10 times the diameter of the discharge hole 31. The main pipe 1 has an inner diameter at least 10 times the diameter of the discharge hole 31, which is advantageous for generating a more rapid pressure at the discharge hole 31 and generating a significant vibration. In the present embodiment, the inner diameter of the main pipe 1 is preferably 20 times the diameter of the discharge hole 31.
Specifically, the discharge pipe 3 is detachably communicated with the main pipe 1. The replacement of the discharge pipe 3 and the main pipe 1 with a detachable structure is advantageous for maintenance or replacement of the discharge pipe 3 and the main pipe 1 in actual use.
More preferably, the pipe vibration generator 10 further includes a pipe joint through which the discharge pipe 3 is detachably communicated with the main pipe 1. The connection of the main pipe 1 is realized through the pipe joint, and the convenience of installation is improved. Further, the pipe joint may be a three-way joint.
Further, the pipe vibration generator 10 includes a plurality of the discharge pipes 3, each of the discharge pipes 3 having a discharge hole 31 with a different hole diameter, wherein one of the discharge pipes 3 is detachably communicated with the main pipe 1. The arrangement of a plurality of discharge pipes 3 is advantageous for achieving different outflow pressures and thus different vibration signals, and the selection of the aperture of the discharge hole 31 can be determined according to the inner diameter of the pipeline 6 to be measured.
Preferably, the pipe vibration generator 10 further comprises a quick coupling, one end of the quick coupling is used for connecting the connecting end 11, and the other end of the quick coupling is used for connecting the pipeline 6 to be measured. The quick coupling is beneficial to realizing the quick assembly and disassembly of the pipeline vibration generator 10 and the pipeline 6 to be tested.
Specifically, the pipe vibration generator 10 further includes a second valve 5 connected to the main pipe 1, and the second valve 5 is disposed between the first valve 2 and the connection end 11. Specifically, after the pipe vibration generator 10 is connected to the pipe 6 to be measured, when the pipe is not required to be positioned, the second valve 5 may be closed to cut off the fluid, so as to stop the generation of the fluid pulse signal at any time. When the pipeline positioning is needed, the second valve 5 is opened, and the controller 4 alternately controls the first valve 2 to be opened and closed, so that the pipeline 6 to be tested vibrates to facilitate the pipeline positioning through the acquisition of vibration signals.
More preferably, the second valve 5 is a solenoid valve or a manual valve. The second valve 5 is not opened or closed frequently, and may be a solenoid valve connected to the controller 4 by a signal, or a manual valve controlled manually.
Referring to fig. 3 and 4, to achieve the above object, the present invention further provides a pipe positioning method applied to a pipe positioning device, where the pipe positioning device includes a vibration sensor 7 and a pipe vibration generator 10 as described in any one of the above embodiments; the pipeline positioning method comprises the following steps:
step S11, after the pipe vibration generator 10 is connected to the pipe 6 to be tested, controlling the first valve 2 to open and close according to a preset frequency, so that the fluid in the pipe 6 to be tested flows out through the discharge hole 31 of the discharge pipe 3 to generate a pulse vibration signal acting on the pipe 6 to be tested;
step S21, obtaining each vibration signal detected by the vibration sensor 7 around the pipeline 6 to be detected and a detection position point corresponding to each vibration signal, so as to position the laying route of the pipeline 6 to be detected.
The fluid has friction when passing through the pipeline, the friction of the fluid is further expanded by the invention, so that the pipeline 6 to be tested generates vibration with special frequency, the vibration sensor 7 picks up the vibration signal, and the vibration signal is further amplified by an instrument, thereby judging the trend of the pipeline 6 to be tested. The method is suitable for metal pipelines and non-metal pipelines, is convenient to carry, and cannot detect pipelines due to the material of the pipelines. The invention can be mainly used for positioning the tap water pipeline, and is different from a pipeline detector in the prior art, the pipeline detector can detect whatever material is used, the measurement can be carried out only by the fluid with pressure in the pipeline 6 to be detected, and if the fluid with pressure does not exist in the pipeline 6 to be detected, the pressure can be increased by a pump or the pressure fluid is injected into the pipeline 6 to be detected for detection.
The invention realizes the function of pipeline vibration by using the principle that the fluid can generate larger friction vibration when flowing through the reducer pipe, then collects vibration signals by using the vibration sensor 7, amplifies and processes the signals by the host machine 8, then displays the signals on the display screen 81 with touch, converts the processed signals into audio and outputs the audio to the earphone 82. The pipeline vibration generator 10 is manufactured by using a variable diameter pipeline, an electromagnetic valve, a controller 4 and the like. The device avoids the condition that the pipeline is damaged due to the fact that a water hammer is formed inside the pipeline when the electromagnetic valve is independently adopted as a pulse generator, and the diameter-variable pipeline can be replaced according to the inner diameter of the pipeline 6 to be detected, so that the device can be matched with a controller 4 and the like to generate the required specific frequency for pipeline detection, and the anti-interference performance and the positioning accuracy of detection are improved.
Based on the first embodiment of the method for positioning a pipeline according to the present invention, in the second embodiment of the method for positioning a pipeline according to the present invention, before the step S11, the method further includes:
step S22, determining a position of a fluid transportation starting point of the pipeline 6 to be tested, and determining positions of respective interfaces from the fluid transportation starting point to the end point of the pipeline 6 to be tested from near to far, so as to determine respective detection sections of the pipeline 6 to be tested;
step S23, respectively installing the pipeline vibration generators 10 on the external interfaces of the detection sections;
the step S21 includes:
step S24, obtaining each vibration signal detected by the vibration sensor 7 at each detection segment and a detection position point corresponding to each vibration signal, so as to position the laying route of the pipeline 6 to be detected.
The fluid transport origin may be a fluid transport origin in the detection area, for example, a water supply room for tap water when a tap water pipe is positioned. The interface is the position of the pipeline 6 to be tested which can be connected with the water pipe externally, such as a pipe well or a water port of a user.
Find the position (piping shaft, user water gap etc.) that can external water pipe in the detection zone, install pipeline vibration generator 10 on the pipeline 6 that awaits measuring, adjustment controller 4, make pipeline vibration generator 10 operation, produce specific frequency's vibration signal, carry out the interval setting of frequency with the collection instrument, reduce the signal interference that the environment brought, then begin to carry out the pipeline detection in the detection zone from pipeline vibration generator 10 mounted position, carry out the pipeline position judgement according to the signal column strip on the display screen 81 and the sound size in the earphone 82, thereby confirm the pipeline trend. The method for detecting the pipeline is simple in operation mode, does not need professional personnel to operate, and is suitable for severe environments. The interference resistance is strong.
Based on the second embodiment of the pipeline positioning method of the present invention, in a third embodiment of the pipeline positioning method of the present invention, the step S24 includes:
step S25, acquiring each vibration signal detected by the vibration sensor 7 at each detection segment and a detection position point corresponding to each vibration signal, so as to position the laying route of the pipeline 6 to be detected at each detection segment;
step S26, connecting the laying route of the pipeline 6 to be tested of each detection segment to position the laying route of the pipeline 6 to be tested.
In order to achieve the above object, the present invention further provides a pipeline positioning device, which includes a vibration sensor 7 and the pipeline vibration generator 10 as described in any one of the above embodiments, wherein the pipeline vibration generator 10 is used for connecting to the pipeline 6 to be detected to vibrate the pipeline 6 to be detected, and the vibration sensor 7 is used for detecting a pipeline vibration signal generated after the pipeline vibration generator 10 is connected to the pipeline 6 to be detected.
Specifically, the pipeline positioning device comprises a pipeline vibration generator 10, a host machine 8, and a vibration sensor 7, a display screen 81 and an earphone 82 which are respectively in signal connection with the host machine 8. After the pipeline vibration generator 10 is started and generates vibration, a detection person wears the earphone 82, collects vibration signals between the connection position of the pipeline vibration generator 10 and the pipeline 6 to be detected and the position of the fluid transportation starting point through the vibration sensor 7, and determines the laying line of the pipeline 6 to be detected according to the strength of the vibration signals. The display screen 81 may be a touch control screen, and during the test, the pulse frequency may be adjusted by the touch control screen, so that the vibration signal is clearly distinguished from other surrounding signals.
The pipeline vibration generator 10 is manufactured by using the principle that the fluid generates large friction vibration when flowing through the reducer pipe and adopting the electromagnetic valve, the reducer pipe, the controller 4 and the like to generate pipeline vibration. Vibration signals are collected by the vibration sensor 7 to be amplified and processed, so that the instrument can be visible and audible, and the accuracy of pipeline positioning is improved. The variable diameter pipe and the electromagnetic valve are opened and closed to generate a vibration signal, so that the particularity of the vibration signal is improved, the pipeline water hammer is avoided, and the damage to the pipeline in the testing process is reduced. The anti-interference performance of signals is enhanced, and the accuracy of pipeline detection is improved. The opening and closing of the electromagnetic valve are controlled through the adjusting controller 4, the generated special signals can be effectively adjusted according to the environmental noise, then the frequency range on the detection host machine 8 is adjusted according to the adjusted control signals, the accuracy of pipeline detection can be further improved, and unnecessary loss and the stability of a city water supply system are avoided in city construction.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The control method of the pipeline vibration generator is characterized in that the pipeline vibration generator comprises a main pipe, a first valve and a discharge pipe, wherein the first valve and the discharge pipe are arranged on the main pipe, and the first valve and the discharge pipe are respectively arranged between two ends of the main pipe at intervals; the end part of the main pipe close to the discharge pipe is a connecting end used for being communicated with a pipeline to be tested; the front end of the discharge pipe is communicated between the connecting end and the first valve, and the tail end of the discharge pipe extends in the direction away from the main pipe and is provided with a discharge hole; the hole diameter of the discharge hole is smaller than the inner diameter of the discharge pipe; the control method of the pipeline vibration generator comprises the following steps:
after the pipeline vibration generator is connected to a pipeline to be detected, the first valve is controlled to be opened and closed according to a preset frequency, so that fluid in the pipeline to be detected flows out through the discharge hole of the discharge pipe to generate a pulse vibration signal acting on the pipeline to be detected.
2. The method of controlling a pipe vibration generator according to claim 1, further comprising a second valve connected to the main pipe, the second valve being disposed between the first valve and the connection end; after the pipeline vibration generator is connected to a pipeline to be tested, the opening and closing of the first valve are controlled according to a preset frequency, so that fluid in the pipeline to be tested flows out through the discharge hole of the discharge pipe to generate a pulse vibration signal acting on the pipeline to be tested, and the method further comprises the following steps:
and after the pipeline vibration generator is connected to the pipeline to be tested, controlling the second valve to be opened.
3. The method of controlling a pipe vibration generator according to claim 1, wherein the pipe vibration generator includes a plurality of the discharge pipes, each of which has a discharge hole having a different hole diameter; the control method of the pipeline vibration generator further comprises the following steps:
determining the discharge pipe connected to the main pipe according to the inner diameter of the pipeline to be measured and the fluid transmission speed;
adjusting the preset frequency according to at least one of an inner diameter of the pipe to be measured, a fluid transfer speed, and a discharge hole aperture of the discharge pipe connected to the main pipe.
4. A pipe vibration generator, characterized by applying the control method of the pipe vibration generator according to any one of claims 1 to 3; the pipeline vibration generator comprises a main pipe, a first valve and a discharge pipe, wherein the first valve and the discharge pipe are arranged on the main pipe, and the first valve and the discharge pipe are respectively arranged between two ends of the main pipe at intervals; the end part of the main pipe close to the discharge pipe is a connecting end used for being communicated with a pipeline to be tested; the front end of the discharge pipe is communicated between the connecting end and the first valve, and the tail end of the discharge pipe extends in the direction away from the main pipe and is provided with a discharge hole; the hole diameter of the discharge hole is smaller than the inner diameter of the discharge pipe.
5. The pipe vibration generator of claim 4, wherein said first valve is a solenoid valve, said first valve being in signal communication with a controller.
6. The pipe vibration generator according to claim 4 or 5, further comprising a second valve connected to the main pipe, the second valve being disposed between the first valve and the connection end.
7. A pipe positioning method, applied to a pipe positioning device comprising a vibration sensor and a pipe vibration generator according to any one of claims 4 to 6; the pipeline positioning method comprises the following steps:
after the pipeline vibration generator is connected to a pipeline to be tested, the first valve is controlled to be opened and closed according to a preset frequency, so that fluid in the pipeline to be tested flows out through a discharge hole of the discharge pipe to generate a pulse vibration signal acting on the pipeline to be tested;
and acquiring each vibration signal detected by the vibration sensor at the periphery of the pipeline to be detected and each detection position point corresponding to the vibration signal so as to position the laying route of the pipeline to be detected.
8. The method as claimed in claim 7, wherein before the step of controlling the first valve to open and close according to a preset frequency after the pipe vibration generator is connected to the pipe to be tested, so that the fluid in the pipe to be tested flows out through the discharge hole of the discharge pipe to generate the pulse vibration signal acting on the pipe to be tested, the method further comprises:
determining the position of a fluid transportation starting point of the pipeline to be detected, and determining the positions of all interfaces from the fluid transportation starting point to the end point of the pipeline to be detected from near to far so as to determine all detection sections of the pipeline to be detected;
respectively installing the pipeline vibration generators on the external interfaces of the detection sections;
the step of obtaining each vibration signal detected by the vibration sensor at the periphery of the pipeline to be detected and each detection position point corresponding to the vibration signal so as to position the laying route of the pipeline to be detected comprises the following steps:
and acquiring each vibration signal detected by the vibration sensor at each detection section and a detection position point corresponding to each vibration signal so as to position the laying route of the pipeline to be detected.
9. The pipeline positioning method according to claim 8, wherein the step of obtaining each vibration signal detected by the vibration sensor at each detection segment and a detection position point corresponding to each vibration signal to position the laying route of the pipeline to be detected comprises:
acquiring each vibration signal detected by the vibration sensor at each detection section and a detection position point corresponding to each vibration signal so as to position the laying route of the pipeline to be detected of each detection section;
and connecting the laying route of the pipeline to be detected of each detection section to position the laying route of the pipeline to be detected.
10. A pipeline positioning device, comprising a vibration sensor and the pipeline vibration generator as claimed in any one of claims 4 to 6, wherein the pipeline vibration generator is used for connecting a pipeline to be tested to make the pipeline to be tested vibrate, and the vibration sensor is used for detecting a pipeline vibration signal generated after the pipeline vibration generator is connected with the pipeline to be tested.
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| CN202010243514.5A CN111322459A (en) | 2020-03-31 | 2020-03-31 | Pipeline vibration generator and control method thereof, pipeline positioning device and positioning method |
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| CN202010243514.5A CN111322459A (en) | 2020-03-31 | 2020-03-31 | Pipeline vibration generator and control method thereof, pipeline positioning device and positioning method |
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