CN113924439A - Pipeline information acquisition device - Google Patents
Pipeline information acquisition device Download PDFInfo
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- CN113924439A CN113924439A CN202080038321.4A CN202080038321A CN113924439A CN 113924439 A CN113924439 A CN 113924439A CN 202080038321 A CN202080038321 A CN 202080038321A CN 113924439 A CN113924439 A CN 113924439A
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- power generation
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- 238000010248 power generation Methods 0.000 claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 26
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 230000005611 electricity Effects 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 description 14
- 238000006073 displacement reaction Methods 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000012806 monitoring device Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Images
Classifications
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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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- 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
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/10—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations
- F16L27/107—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a flexible sleeve
- F16L27/11—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a flexible sleeve the sleeve having the form of a bellows with multiple corrugations
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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
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Pipeline Systems (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Joints Allowing Movement (AREA)
Abstract
Provided is a pipeline information acquisition device which can easily monitor a pipeline that is buried underground or the like and whose state is difficult to confirm. The disclosed device is provided with: a bellows portion 7 (flexure) which is provided in the pipe 1 and is deformable; a power generation device 3 that generates power by a deformation operation of the bellows portion 7; a transmission device 5 that is driven by the generated power of the power generation device 3 and wirelessly transmits the generated power of the power generation device 3 as information related to the pipeline 1; and a receiving device 6 that receives the signal transmitted by the transmitting device 5. When the bellows portion 7 vibrates, electricity is generated by each piezoelectric element 11 of the power generator 3, and the generated electricity can be used as data indicating the state of the pipe 1 and the state of the fluid.
Description
Technical Field
The present invention relates to a pipe information acquisition device that is provided in a pipe through which a fluid flows and acquires information related to the pipe.
Background
In fluid pipelines such as water pipes, steam pipes, or pumps installed underground or on piers, a flexure such as a bellows is locally provided so as to flexibly follow displacement caused by a foundation subsidence or an earthquake (see, for example, patent document 1 below). The flexible portion is provided in a part of the pipe to cope with displacement, and external force caused by displacement of the pipe can be absorbed to prevent damage to the pipe.
The bellows in patent document 1 is formed of a thin metal (stainless steel or the like), and includes large diameter portions and small diameter portions alternately arranged in the axial direction. The dimension of the space between the large-diameter portion and the small-diameter portion of the bellows is flexibly changed in accordance with an external force.
By providing a flexible portion such as a bellows which is easily bent and expanded and contracted in a part of the pipeline in this manner, the load applied to a portion of the pipeline having no flexibility can be reduced, and the life of the pipeline can be extended.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2005-273772
Disclosure of Invention
On the other hand, when a flexible portion such as a bellows is repeatedly deformed to follow displacement and vibrated by turbulence during passage of a fluid for a long time, damage such as a crack may occur due to fatigue.
However, if the pipe and the flexible portion are installed underground, on a bridge pier, or the like, it is extremely difficult to confirm the presence or absence of deterioration or damage.
Therefore, it is conceivable to provide a monitoring device such as a sensor for monitoring the state of the flexure, but in the case where the conduit is buried in the ground, for example, it is difficult to supply power to the monitoring device provided in the conduit. That is, for example, it is conceivable to mount a battery on the monitoring device, but in many cases, the battery has a longer life than the flexure portion and is fatigued to be used. Further, it is conceivable to supply power from the ground to the underground monitoring devices, but when the monitoring devices are provided at a plurality of locations on the pipeline, it is difficult to secure wiring, a power supply, and the like for supplying power to the respective monitoring devices.
In view of the above-described problems, an object of the present invention is to provide a pipeline information collection device capable of easily monitoring a pipeline in an environment in which a state is difficult to confirm.
In order to achieve the above object, a pipeline information collecting device according to the present invention is a pipeline information collecting device that is provided in a pipeline through which a fluid flows and collects information related to the pipeline, the pipeline information collecting device including: a flexible portion that is provided in the pipe and is deformable; a power generation unit provided in the flexure unit and configured to generate power; an information acquisition unit that acquires pipeline information that is information of the pipeline; and a transmission unit that wirelessly transmits the pipeline information and drives the information collection unit with the electric power generated by the power generation unit.
When a deformation operation such as bending, expansion, and contraction, or vibration occurs in the flexure portion, the power generation portion generates power by the deformation operation. The information acquisition unit acquires information on the pipeline using the power generated by the power generation unit. The information acquisition unit also includes information on the supply of electric power to the information acquisition unit by a battery or the like in advance. The thus acquired information of the pipeline can be wirelessly transmitted to the outside by the transmitter.
By receiving the signal transmitted from the transmitter by an external receiving unit, it is possible to easily confirm and monitor various kinds of information on the pipe such as a deformation state of the flexible portion and a change in the flow rate of the fluid passing through the flexible portion. Thus, according to the pipeline information collection device of the present invention, the monitoring of the pipeline in an environment in which the state is difficult to confirm can be easily performed.
In the pipeline information collection device according to the present invention, the information collection unit may collect the pipeline information from an output of the power generation unit. The generated power (voltage) of the power generation unit changes in proportion to the magnitude of the deformation operation of the flexure unit. The change in the generated power of the power generating unit at this time corresponds to various information such as the deformation state of the flexible portion and the change in the flow rate of the fluid passing through the flexible portion. Thus, various information such as the deformation state of the flexible portion and the change in the flow rate of the fluid passing through the flexible portion can be acquired from the generated power of the power generation portion.
In the pipeline information collection device according to the present invention, the transmission unit may be driven by the power generated by the power generation unit. In this case, a power supply for driving the transmission unit is not required.
In the pipe information collection device according to the present invention, the flexure may be formed in a bellows shape including a large diameter portion and a small diameter portion, and the power generation portion may be provided with a piezoelectric element on a surface of the flexure. According to this configuration, the piezoelectric element can reliably convert the vibration and the like generated in the large diameter portion and the small diameter portion of the flexure portion into electric power.
In the pipe information collection device according to the present invention, the piezoelectric element may be attached to one or both of a top portion of the large diameter portion and a bottom portion of the small diameter portion of the flexure portion. In the bellows-shaped flexible portion formed of the large diameter portion and the small diameter portion, when bending, expansion, contraction, vibration, or the like occurs, large deformation occurs at the top of the large diameter portion and the bottom of the small diameter portion. Therefore, the top of the large diameter portion and the bottom of the small diameter portion are preferable positions in generating power by the deforming operation.
Further, the piezoelectric element has higher durability and a small and lightweight structure as compared with electromagnetic induction. Thus, the piezoelectric element can be provided in a relatively narrow region such as the top of the large diameter portion and the bottom of the small diameter portion of the flexure, and power can be efficiently generated by a deformation operation such as vibration of the flexure. Here, the piezoelectric element does not mean a specific element, and may be an element made of a general material having a material that generates electricity by vibration.
In the pipeline information collection device according to the present invention, the information collection unit may be a position sensor that detects a change in relative position of at least 2 points across the flexible portion in the axial direction of the pipeline. According to this configuration, when the 2 point of the pipeline moves relatively due to a subsidence of the foundation or the like, a change in the position thereof can be detected by the position sensor.
In the pipeline information collection device according to the present invention, the information collection unit may be a displacement sensor that detects displacement of the pipeline, and the displacement sensor may be provided so as to be fixed to the pipeline at least at 2 points across the flexible portion in the axial direction of the pipeline. According to this configuration, when the 2 point of the pipeline moves relatively due to a subsidence of the foundation or the like, the displacement can be detected by the displacement sensor.
Drawings
Fig. 1 is a diagram schematically showing the configuration of a pipeline information collection device according to an embodiment of the present invention.
Fig. 2 is a plan view showing the power generation device used in fig. 1.
Fig. 3 is a sectional view illustrating a part of the bellows portion.
Fig. 4 is a plan view showing a power generation device of a pipeline information collection device according to a second embodiment of the present invention.
Fig. 5 is a sectional view illustrating a bellows portion of the pipeline information collection device according to the second embodiment.
Fig. 6 is an explanatory view showing a pipeline information collection device of the third embodiment, where (a) shows an initial state, and (B) shows a state where a pipeline is displaced due to a subsidence of a foundation or the like.
Fig. 7 is an explanatory view of a modification of the pipeline information collection device according to the third embodiment, where (a) shows an initial state and (B) shows a state in which the pipeline is displaced due to, for example, a subsidence of the foundation.
Detailed Description
A pipeline information collection device according to an embodiment of the present invention will be described with reference to fig. 1 to 7. The pipe line information collection device of the first embodiment shown in fig. 1 collects various kinds of information (pipe line information) related to a pipe line 1 from a joint pipe 2 provided in a part of the pipe line 1 of a water supply pipe. The joint pipe 2 is provided with a power generation device 3 (power generation unit). The information acquisition device 4 (information acquisition unit) and the transmission device 5 (transmission unit) are electrically connected to the power generation device 3. Further, a receiving device 6 (receiving unit) is provided at a position away from the transmitting device 5.
As shown in fig. 1, the joint pipe 2 includes: a deformable bellows portion 7 (flexure portion) having a substantially wave-shaped cross section; and connections 8, 9 for connection to the ends of the pipeline 1. The bellows portion 7 is made of stainless steel having excellent mechanical properties and rust resistance, and is formed in a bellows shape including a plurality of large diameter portions 7a and small diameter portions 7b alternately arranged.
The bellows portion 7 has sufficient flexibility and stretchability, and the radial dimensions and thickness of the large diameter portion 7a and the small diameter portion 7b are set according to the application. In the present embodiment, the corrugated portion 7 is formed in a size and shape preferable for a water supply pipe.
The power generator 3 is fixed to the bellows portion 7 of the joint pipe 2, and as shown in fig. 2, includes a piezoelectric element 11 mounted on the surface of a strip-shaped substrate 10. The piezoelectric element 11 converts the deformation operation (mainly vibration) of the bellows portion 7 into a voltage. The substrate 10 is a film-like flexible substrate, and the wiring 12 connected to the piezoelectric element 11 is provided on the surface of the substrate 10.
As shown in fig. 2, the piezoelectric element 11 is formed in a rectangular shape in the longitudinal direction of the substrate 10 as a flexible sheet extending in the longitudinal direction. A connector portion 13 for outputting a voltage obtained from the piezoelectric element 11 is formed at one end portion of the substrate 10. As shown in fig. 1, the information acquisition device 4 and the transmission device 5 are connected to the connector portion 13. The signal transmitted from the transmitter 5 is received by an external receiver 6.
As shown in fig. 3, a substrate 10 is attached to the surface of the bellows portion 7, and the piezoelectric element 11 of the power generator 3 is provided on the surface of the substrate 10. The piezoelectric element 11 is provided so that there is no gap between the top (maximum outer diameter portion) of the large diameter portion 7a of the bellows portion 7 and the bottom (minimum outer diameter portion) of the small diameter portion 7 b.
In the present embodiment, the information collection device 4 collects the pipeline information from the output of the piezoelectric element 11 of the power generation device 3. When the bellows portion 7 vibrates due to the influence of water passing through the inside, the output of the piezoelectric element 11 changes. The information acquisition device 4 acquires the line information on the bellows portion 7 by using the change in the output of the piezoelectric element 11.
In the present embodiment, the temperature sensor 4a is connected to the information acquisition device 4. The temperature sensor 4a is fixed to the surface of the bellows portion 7, and acquires the temperature of the bellows portion 7. In the present embodiment, the information acquisition device 4 is provided with a nonvolatile storage unit 4b (such as a reieprom), and the acquired voltage data and temperature data are stored in the storage unit 4 b. Since the temperature change can be detected based on the material of the piezoelectric element 11, the temperature sensor 4a is not necessary when such a piezoelectric element 11 is used.
Next, the operation of the pipeline information collection device according to the present embodiment will be described. The pipeline 1 shown in fig. 1 is buried underground, and its periphery is covered with sand or the like. When the place where the pipeline 1 is buried is a road, sand, asphalt, or the like is provided above the pipeline 1.
In this state, when water passes through the inside of the pipe 1, the bellows portion 7 vibrates under the influence of turbulence of the fluid caused by the bellows shape. Further, when vibration of a device such as a pump coupled to the bellows portion 7 or vibration of a vehicle passing through the vicinity is transmitted, the bellows portion 7 also vibrates. When a foundation subsidence, an earthquake, or the like occurs, deformation such as bending and expansion occurs due to displacement associated with the foundation subsidence.
At this time, the top of the large diameter portion 7a and the bottom of the small diameter portion 7b of the corrugated portion 7 are deformed with a large amplitude. Since the piezoelectric element 11 is provided over the entire length of the bellows portion 7 including the top portion of the large diameter portion 7a and the bottom portion of the small diameter portion 7b of the bellows portion 7 deformed to a large extent, vibration of the bellows portion 7 can be reliably obtained and power generation can be performed.
The vibration of the bellows 7 varies depending on not only the state of the bellows 7 but also the flow rate, pressure, and the like of the fluid (tap water). Thus, the voltage obtained from the piezoelectric element 11 of the power generation device 3 can be used as data representing the state of the pipe 1 and the state of the fluid.
For example, when the bellows portion 7, surrounding equipment, or the like changes in material due to a change in surrounding pressure, a change in temperature, or deterioration over time, the data of the voltage obtained from the piezoelectric element 11 of the power generator 3 fluctuates. Specifically, a change such as an increase in the vibration frequency of the bellows portion 7 can be considered. Therefore, the information collection device 4 can also detect deterioration or failure of the bellows portion 7 and the like in advance by collecting the signal from the piezoelectric element 11.
For example, when a crack is generated in the bellows portion 7 and fluid leakage (water leakage) occurs from the crack, the amount of vibration of the bellows portion 7 increases and the voltage obtained from the piezoelectric element 11 changes differently from that in the normal state. Therefore, when such a change in voltage is caused, which is different from the normal state, it can be determined that fluid leakage (water leakage) occurs from the bellows portion 7.
The voltage obtained from the power generation device 3 is transmitted to the information collection device 4. In addition, temperature data from the temperature sensor 4a is also transmitted to the information collection device 4. The transmitted voltage data and temperature data are stored in the storage unit 4b of the information acquisition device 4.
In the present embodiment, the voltage obtained from the power generator 3 is also transmitted to the transmitter 5. The transmission device 5 wirelessly transmits data stored in the storage unit 4b of the information collection device 4 to the outside at a predetermined timing. The signal transmitted from the transmission device 5 to the outside includes data indicating the state of the bellows 7 and the state of the fluid.
At this time, the transmission device 5 is driven by the electric power obtained from the power generation device 3. The transmission operation of the signal may be performed by the transmission device 5 at all times, or may be performed intermittently at a constant interval. When the signal is transmitted intermittently, a battery (not shown) is mounted on the transmission device 5, and the battery is charged with the electric power of the power generation device 3 when the signal is not transmitted. This makes it possible to obtain a high transmission output using the electric power of the battery. Further, the transmission operation of the signal may be performed by the transmission device 5 in response to a signal from the external reception device 6.
The signal transmitted from the transmitter 5 is received by an external receiver 6. The voltage of the transmitting device 5 received by the receiving device 6 can be used as data indicating the state of the bellows 7 and the state of the fluid. The temperature condition of the bellows portion 7 can also be confirmed from the signal of the temperature sensor 4 a. This makes it possible to check and monitor the state of the bellows portion 7 and the state of the fluid.
With the above configuration, the pipeline information collection device according to the present embodiment can be preferably applied to a case where the pipeline 1 and the joint pipe 2 of the water supply pipe are installed underground, on a bridge pier, or the like. That is, data can be transmitted to a position away from the pipeline 1 or the joint pipe 2 by using power (voltage) obtained from the power generation device 3 installed in the ground, a pier, or the like together with the joint pipe 2, and therefore the state of the bellows portion 7 and the state of the fluid can be easily monitored via the receiving device 6.
Next, a pipeline information collection device 1a according to a second embodiment of the present invention will be described with reference to fig. 4 and 5. The power generator 3a according to the second embodiment is fixed to the bellows portion 7 of the joint pipe 2, and includes a plurality of piezoelectric elements 11 supported by a strip-shaped substrate 10, as shown in fig. 4. The piezoelectric element 11 is an element that converts a deformation operation (mainly vibration) of the bellows portion 7 into a voltage. The substrate 10 is a film-like flexible substrate, and is formed with wiring 12 connected to each piezoelectric element 11.
As shown in fig. 4, the plurality of piezoelectric elements 11 are provided at predetermined intervals in the longitudinal direction of the substrate 10, which is a flexible sheet extending in the longitudinal direction. A connector portion 13 for outputting a voltage obtained from the piezoelectric element 11 is formed at one end portion of the substrate 10. As shown in fig. 1, the information acquisition device 4 and the transmission device 5 are connected to the connector portion 13.
As shown in fig. 5, the piezoelectric element 11 of the power generator 3 is closely attached to the surface of the bellows portion 7. More specifically, the piezoelectric element 11 is provided at the top (maximum outer diameter portion) of the large diameter portion 7a and the bottom (minimum outer diameter portion) of the small diameter portion 7b of the bellows portion 7.
In the present embodiment, the power generation device 3 is configured as follows: when the piezoelectric element 11 shown in fig. 4 is fixed to the bellows portion 7 on the substrate 10, it is disposed on the top of the large diameter portion 7a and the bottom of the small diameter portion 7b of the bellows portion 7. As for the power generator 3, power generators having different lengths and intervals of the piezoelectric elements 11 are prepared in accordance with changes in the shape of the bellows portion 7.
In the second embodiment, the piezoelectric element 11 is provided on both the top (maximum outer diameter portion) of the large diameter portion 7a and the bottom (minimum outer diameter portion) of the small diameter portion 7b of the bellows portion 7. However, the piezoelectric element 11 is not limited to this, and may be provided only on one of the top of the large diameter portion 7a and the bottom of the small diameter portion 7b of the bellows portion 7.
Next, a pipeline information collection device according to a third embodiment of the present invention will be described with reference to fig. 6. The pipeline information collection device 1b of the third embodiment includes: a stay 21 fixed to the joint pipe 2 at a portion where the bellows portion 7 is not provided; a distance sensor (position sensor) 22 provided to the column 21; and an object (target) member 23 provided on the joint pipe 2 at a position separated from the column 21. Since the other structures have the same structures as those of the first embodiment, detailed descriptions thereof are omitted.
The distance sensor 22 may be a distance sensor using laser, LED, or infrared rays, and in the present embodiment, a laser type distance sensor is used. As the laser type distance sensor, for example, a built-in amplifier type photoelectric sensor PR-G series manufactured by keynote corporation (キーエンス) and the like can be used.
As shown in fig. 6(a), the target member 23 is higher than the support column 21 in the initial state. The width of the target member 23 is also formed larger than the support column 21. In the present embodiment, when the pipeline information collection device 1b is installed underground or the like, the support column 21, the distance sensor 22, and the target member 23 are installed with a cover, not shown, and are not covered with sand.
In the pipeline information collection device 1b according to the present embodiment, if a ground subsidence or the like occurs due to an earthquake or the like and the relative distance between the distance sensor 22 and the member 23 provided on the support column 21 changes, the change can be detected by the distance sensor 22.
Since the target member 23 is higher in height than the support column 21 and larger in width than the support column 21 in the initial state, it moves within the measurement range of the distance sensor 22 even when it moves relative to the support column 21 due to a subsidence of the ground or the like. Alternatively, the target member 23 may be provided with a scale, and the distance sensor 22 may read the scale to measure the moving distance.
Since the change in the distance detected by the distance sensor 22 is transmitted to the information collection device 4 and transmitted from the transmission device 5 to the outside, information such as the subsidence of the ground can be easily acquired even when the installation site of the device is a distant site.
Next, a pipeline information collection device according to a modification of the third embodiment of the present invention will be described with reference to fig. 7. The pipeline information collection device 1c of this modification includes: a stay 21 fixed to the joint pipe 2 at a portion where the bellows portion 7 is not provided; a movement sensor (position sensor) 24 provided at a position separated from the column 21; and a coupling member 25 that couples the support column 21 and the movement sensor 24. Since the other structures have the same structures as those of the third embodiment, detailed descriptions thereof are omitted.
The movement sensor 24 is a sensor that detects the amount of movement when the relative position between 2 points in the vertical direction in fig. 7 changes. As the movement sensor 24, for example, a digital indicator PD-512P manufactured by kayaku テクロック (TECLOCK) or the like can be used.
As shown in fig. 7(a) and (B), the movement sensor 24 is extendable and retractable in the distance measuring direction. In the present embodiment, when the pipeline information collection device 1c is installed underground or the like, the pillar 21, the movement sensor 24, and the coupling member 25 may be covered with sand or the like, or a cover, not shown, may be attached so as not to cover the above members with sand or the like.
As shown in fig. 7(B), in the pipeline information collection device 1c of the present modification, if the relative distance between the portion provided with the support column 21 and the portion provided with the movement sensor 24 changes due to, for example, a ground subsidence caused by an earthquake, the movement amount can be detected by the movement sensor 24. Since the change in the relative position detected by the movement sensor 24 is transmitted to the information collection device 4 and transmitted from the transmission device 5 to the outside, information such as the subsidence of the ground can be easily obtained even when the installation site of the device is far.
In the pipeline information collection device 1c of the present modification, the movement distance in the vertical direction is detected as the movement sensor 24, but the present invention is not limited to this, and the movement distance in the axial direction of the coupling member 25 may be detected.
In addition to the small-diameter high-sensitivity displacement meter, an optical fiber strain gauge manufactured by HBM corporation or the like may be used as the movement sensor 24. In this case, the strain gauge may be fixed to the coupling member 25, or may be provided so as to be directed in the vertical direction as in the movement sensor 24 of fig. 7.
In the above embodiment, the transmission device 5 is driven by the power generated by the power generation device 3, but the present invention is not limited to this, and a contactless power supply device may be provided in the reception device 6, and a radio wave for power excitation may be transmitted from the contactless power supply device to supply power, so that the transmission device 5 generates power therein and transmits information to the outside by using the power.
In the above embodiment, the storage unit 4b is provided in the information acquisition device 4, but the present invention is not limited to this, and the acquired data may not be stored, but may be transmitted to the outside via the transmission device 5, and the data received by the reception device 6 may be stored on the reception device 6 side.
Description of the reference numerals
1 … pipeline, 3a … power generation device (power generation part), 4 … information acquisition device (information acquisition part), 5 … transmission device (transmission part), 6 … receiving device (receiving part), 7 … corrugated part (bending part), 7a … large-diameter part, 7b … small-diameter part, 11 … piezoelectric element, 22 … distance sensor (position sensor) and 24 … movement sensor (position sensor).
Claims (6)
1. A pipe information collecting device which is provided in a pipe through which a fluid flows and collects information related to the pipe,
the pipeline information acquisition device is provided with:
a flexible portion that is provided in the pipe and is deformable;
a power generation unit provided in the flexure unit and configured to generate power;
an information acquisition unit that acquires pipeline information that is information of the pipeline; and
a transmission unit that wirelessly transmits the pipe information,
and driving the information acquisition part by using the electric power generated by the power generation part.
2. The pipeline information collecting device according to claim 1,
the information acquisition part acquires the pipeline information from the output of the power generation part.
3. The pipeline information collecting device according to claim 1 or 2,
the transmission unit is driven by the electric power generated by the power generation unit.
4. The pipeline information collecting device according to any one of claims 1 to 3,
the flexure is formed in a bellows shape composed of a large diameter portion and a small diameter portion,
the piezoelectric element of the power generating section is mounted on the surface of the flexure section.
5. The pipeline information collecting device according to claim 4,
the piezoelectric element is attached to one or both of the top of the large-diameter portion and the bottom of the small-diameter portion of the flexure.
6. The pipeline information collecting device according to any one of claims 1 to 5,
the information acquisition unit is a position sensor that detects a change in relative position of at least 2 points in the axial direction of the pipeline across the flexure.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019102640 | 2019-05-31 | ||
| JP2019-102640 | 2019-05-31 | ||
| PCT/JP2020/021643 WO2020241901A1 (en) | 2019-05-31 | 2020-06-01 | Conduit line information collection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113924439A true CN113924439A (en) | 2022-01-11 |
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| CN202080038321.4A Pending CN113924439A (en) | 2019-05-31 | 2020-06-01 | Pipeline information acquisition device |
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| Country | Link |
|---|---|
| JP (1) | JP6960128B2 (en) |
| CN (1) | CN113924439A (en) |
| WO (1) | WO2020241901A1 (en) |
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| CN112984238B (en) * | 2021-03-25 | 2023-07-04 | 南通市扬子橡塑有限公司 | Rubber corrugated pipe for marine equipment engineering |
| KR102674169B1 (en) * | 2023-12-12 | 2024-06-13 | 심성구 | Flexible pipe joint structure that can collect displacement information on the position of water pipes |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20040200613A1 (en) * | 2003-04-08 | 2004-10-14 | Fripp Michael L. | Flexible piezoelectric for downhole sensing, actuation and health monitoring |
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| JP2005020296A (en) * | 2003-06-25 | 2005-01-20 | Tadashi Nakanuma | Communication system using fluid transfer piping network |
| KR20130074722A (en) * | 2011-12-26 | 2013-07-04 | 실버레이 주식회사 | Pipe with generating function and generating system using it |
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| WO2020241901A1 (en) | 2020-12-03 |
| JPWO2020241901A1 (en) | 2021-09-13 |
| JP6960128B2 (en) | 2021-11-05 |
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