CN111697876A - Vortex excitation electric device and method for liquid pipeline transportation - Google Patents
Vortex excitation electric device and method for liquid pipeline transportation Download PDFInfo
- Publication number
- CN111697876A CN111697876A CN202010580994.4A CN202010580994A CN111697876A CN 111697876 A CN111697876 A CN 111697876A CN 202010580994 A CN202010580994 A CN 202010580994A CN 111697876 A CN111697876 A CN 111697876A
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- China
- Prior art keywords
- power generation
- piezoelectric power
- swinging component
- vortex
- swinging
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- 239000007788 liquid Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000005284 excitation Effects 0.000 title abstract description 9
- 238000010248 power generation Methods 0.000 claims abstract description 26
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 238000005461 lubrication Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract 2
- 238000012544 monitoring process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/185—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators using fluid streams
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/183—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators using impacting bodies
Abstract
A vortex excitation electric device and method for liquid pipeline transportation belong to the field of energy sources. The method is characterized in that: the device consists of a swinging component, an elastic sheet, a flexible sealing cover, a piezoelectric power generation sheet, a hollow fixed rod and a base. The invention provides a method for collecting fluid energy to generate electricity through vortex shedding, wherein a swinging component periodically swings under the influence of vortex shedding of fluid streaming movement, and a piezoelectric power generation sheet is deformed through the relative movement of a hollow fixed rod and the swinging component in the device, so that the aim of generating electricity is fulfilled. The structure has the advantages of simple structure, no need of lubrication and maintenance and long service life.
Description
Technical Field
The invention relates to a vortex excitation device and method for liquid pipeline transportation, and belongs to the field of energy sources.
Background
Pipeline transportation has been widely used for long distance transportation of fluids such as petroleum and natural gas due to its advantages of low transportation cost, large transportation capacity, etc. In order to ensure the safety and reliability of pipeline transportation, it is important to monitor the working state of the pipeline. The wireless sensor network is an important device for realizing unmanned monitoring at present, but the short battery life is one of the limiting factors of the sensor for long-time unmanned monitoring. Therefore, the vortex excitation electric device in the liquid pipeline transportation is provided, and a small part of flowing energy is collected to supply power to the sensor, so that the monitoring system is ensured to be effective for a long time.
Disclosure of Invention
The invention relates to a vortex excitation device and a method for liquid pipeline transportation, which have the advantages of simple structure, no need of lubrication and maintenance and long service life.
The vortex excitation electric device for liquid pipeline transportation is characterized in that: the device comprises a swinging component, a base, a hollow fixed rod and a piezoelectric power generation piece; the swing part is a semi-open cylinder with a hollow inner part, and a striking ball is fixed in the inner part of the closed side of the swing part; a flexible sealing cover is arranged between the opening end of the swinging component and the base, two elastic sheets are arranged in the flexible sealing cover in a row, and two ends of each elastic sheet are respectively connected with the opening end of the swinging component and the base; the two elastic sheets are arranged in a plane in a row; the first end of the hollow fixed rod is fixed at the center of the base, and the second end of the hollow fixed rod extends into the swinging component; one end of the piezoelectric power generation piece is fixed at the second end of the hollow fixing rod, the other end of the piezoelectric power generation piece is in contact with the knocking ball, the piezoelectric power generation piece can move relative to the knocking ball, and the plane where the piezoelectric power generation piece is located is parallel to the planes where the two elastic sheets are located, so that the displacement of the swinging component in the downstream direction is limited, and the swinging component swings perpendicular to the flowing direction. The positive and negative electrodes of the piezoelectric power generation piece are connected with the first end of the lead, and the second end of the lead is connected with an external storage battery or electric equipment through the hollow part of the hollow fixing rod.
The piezoelectric power generation sheet and the knocking balls are in a plurality of pairs to meet different power requirements, and the piezoelectric power generation sheet and the knocking balls are in parallel connection.
The vortex excitation electric device in the liquid pipeline transportation is characterized in that: the swing component is a cylinder with a cross section in a semicircular and rectangular combined shape, a triangular groove incident surface is formed by the inner concave surface opposite to the semicircular arc surface, two groove surfaces of the triangular groove and other surfaces of the cylinder form two edges, and two incident flow inclined splitting grooves are respectively formed in the two edges. The special structure changes the deswirler mode and the pressure distribution of the fluid in the streaming motion, and the swing amplitude of the streaming component can be strengthened.
The power generation method of the vortex excitation electric device in the liquid pipeline transportation is characterized in that: when fluid in the pipeline flows through the swinging component, a vortex-shedding phenomenon can be formed, so that the swinging component periodically swings in a plane perpendicular to the flow direction, the knocking ball in the swinging component can also periodically knock the piezoelectric power generation piece along with the swinging of the swinging component, the piezoelectric power generation piece is deformed to generate alternating current, and the alternating current is led out through a lead and is connected into a storage battery or is directly supplied to equipment for use.
Drawings
FIG. 1 is a schematic diagram of a vortex-induced electrical device in liquid pipeline transportation;
FIG. 2 is a partially enlarged view of a piezoelectric power generating sheet of a vortex-excited electrical device in liquid pipeline transportation;
FIG. 3 is a schematic diagram of a structure of a swing component of a vortex-excited electrical device in liquid pipeline transportation;
FIG. 4 is a schematic view of the installation of a vortex-inducing electrical device in a pipeline for transportation of a liquid pipeline;
number designation in the figures: the device comprises a swinging component 1, an elastic sheet 2, a flexible sealing cover 3, a knocking ball 4, a piezoelectric power generation sheet 5, an incident flow inclined splitting groove 6, a hollow fixed rod 7, a base 8 and a triangular groove incident flow surface 9.
Detailed Description
The operation of a vortex-induced electrical device in the transportation of a liquid pipeline is described with reference to fig. 4.
The device is fixed on the wall of the pipeline, the structure of the device except the base is arranged inside the pipeline, when fluid in the pipeline flows through the swinging component, a vortex phenomenon can be formed, the swinging component periodically swings in a plane perpendicular to the flowing direction, the knocking ball in the swinging component can periodically knock the piezoelectric power generation piece along with the swinging of the swinging component, so that the piezoelectric power generation piece deforms to generate alternating current, and the alternating current is led out through a wire to be connected into a storage battery or directly supplied to equipment for use. After the system reaches resonance, the detection module continuously detects the swing frequency and the resonance frequency, and the feedback module is called to maintain the swing frequency to float in the resonance interval.
Claims (4)
1. A vortex-induced electrical device for use in liquid pipeline transport, comprising:
the device comprises a swinging component (1), a base (8), a hollow fixed rod (7) and a piezoelectric power generation sheet (5);
the swing component (1) is a semi-open cylinder with a hollow inner part, and a knocking ball (4) is fixed in the inner part of the closed side of the swing component; a flexible sealing cover (3) is arranged between the opening end of the swinging component (1) and the base (8), two elastic sheets (2) are arranged in the flexible sealing cover (3) in rows, and the two ends of each elastic sheet (2) are respectively connected with the opening end of the swinging component (1) and the base (8); the two elastic sheets (2) are arranged in a plane in a row;
the first end of the hollow fixed rod (7) is fixed at the center of the base (8), and the second end of the hollow fixed rod extends into the swinging component; one end of the piezoelectric power generation piece (5) is fixed at the second end of the hollow fixing rod (7), the other end of the piezoelectric power generation piece is in contact with the knocking ball (4), the piezoelectric power generation piece can move relative to the knocking ball, and the plane where the piezoelectric power generation piece (5) is located is parallel to the plane where the two elastic thin sheets (2) are located;
the positive and negative electrodes of the piezoelectric power generation sheet (5) are connected with the first end of the lead, and the second end of the lead is connected with an external storage battery or electric equipment through the hollow part of the hollow fixing rod (7).
2. The vortex-excited electrical device for use in liquid pipeline transport of claim 1, wherein:
the piezoelectric power generation sheets (5) and the knocking balls (4) are in a plurality of pairs, and the pairs of the piezoelectric power generation sheets and the knocking balls are connected in parallel.
3. The vortex-excited electrical device for use in liquid pipeline transport of claim 1, wherein:
the swing component (1) is a cylinder with a cross section in a semicircular and rectangular combined shape, a triangular groove incident surface (9) is formed by the inner concave surface opposite to the semicircular arc surface, two groove surfaces of the triangular groove and other surfaces of the cylinder form two edges, and two incident flow inclined splitting grooves (6) are respectively formed in the two edges.
4. The method of claim, comprising the steps of:
when fluid in the pipeline flows through the swinging component (1), a vortex-shedding phenomenon is formed, so that the swinging component periodically swings in a plane perpendicular to the flowing direction, the knocking ball (4) in the swinging component can also periodically knock the piezoelectric power generation sheet (5) along with the swinging of the swinging component, the piezoelectric power generation sheet is deformed to generate alternating current, and the alternating current is led out through a lead and is connected into a storage battery or is directly supplied to equipment for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010580994.4A CN111697876A (en) | 2020-06-23 | 2020-06-23 | Vortex excitation electric device and method for liquid pipeline transportation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010580994.4A CN111697876A (en) | 2020-06-23 | 2020-06-23 | Vortex excitation electric device and method for liquid pipeline transportation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111697876A true CN111697876A (en) | 2020-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010580994.4A Pending CN111697876A (en) | 2020-06-23 | 2020-06-23 | Vortex excitation electric device and method for liquid pipeline transportation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111697876A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855299A (en) * | 2020-12-31 | 2021-05-28 | 南京航空航天大学 | Vortex-induced oscillation and swing power generation device and method used in fluid pipeline |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868785A (en) * | 2015-04-30 | 2015-08-26 | 沈阳化工大学 | Cylindrical vortex-induced vibration generation device with built-in piezoelectric beam |
| CN108869161A (en) * | 2018-06-13 | 2018-11-23 | 南京航空航天大学 | Determine the pipeline hydraulic electricity generation module and system and electricity-generating method of water (flow) direction |
| CN110889996A (en) * | 2019-12-30 | 2020-03-17 | 郑州大学 | Experience formula is horizontal collision vibration energy collection system for teaching |
-
2020
- 2020-06-23 CN CN202010580994.4A patent/CN111697876A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868785A (en) * | 2015-04-30 | 2015-08-26 | 沈阳化工大学 | Cylindrical vortex-induced vibration generation device with built-in piezoelectric beam |
| CN108869161A (en) * | 2018-06-13 | 2018-11-23 | 南京航空航天大学 | Determine the pipeline hydraulic electricity generation module and system and electricity-generating method of water (flow) direction |
| CN110889996A (en) * | 2019-12-30 | 2020-03-17 | 郑州大学 | Experience formula is horizontal collision vibration energy collection system for teaching |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855299A (en) * | 2020-12-31 | 2021-05-28 | 南京航空航天大学 | Vortex-induced oscillation and swing power generation device and method used in fluid pipeline |
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Application publication date: 20200922 |