CN112780480A - Piezoelectric and electromagnetic combined type power generation device for capturing wave energy - Google Patents

Piezoelectric and electromagnetic combined type power generation device for capturing wave energy Download PDF

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Publication number
CN112780480A
CN112780480A CN202110238726.9A CN202110238726A CN112780480A CN 112780480 A CN112780480 A CN 112780480A CN 202110238726 A CN202110238726 A CN 202110238726A CN 112780480 A CN112780480 A CN 112780480A
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CN
China
Prior art keywords
power generation
piezoelectric
box
wave energy
magnets
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Pending
Application number
CN202110238726.9A
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Chinese (zh)
Inventor
刘毅
卢方
韩冬
陈祥彬
何嘉政
金恒
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Ningbo University of Technology
Zhejiang University of Science and Technology ZUST
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Zhejiang University of Science and Technology ZUST
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Publication date
Application filed by Zhejiang University of Science and Technology ZUST filed Critical Zhejiang University of Science and Technology ZUST
Priority to CN202110238726.9A priority Critical patent/CN112780480A/en
Publication of CN112780480A publication Critical patent/CN112780480A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
    • F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
    • F03B13/16—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
    • F03B13/18—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore
    • F03B13/1805—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem
    • F03B13/181—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem for limited rotation
    • F03B13/1815—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem for limited rotation with an up-and-down movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
    • H02K35/02—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving magnets and stationary coil systems
    • 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
    • H02N2/186—Vibration harvesters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient

Abstract

The invention discloses a piezoelectric and electromagnetic combined type power generation device for capturing wave energy, which comprises a floater, a swing rod, a power generation box and a support, wherein the swing rod extends out of the power generation box, the extending end of the swing rod is hinged with the floater, and the power generation box is supported by the support. The power generation box comprises a box body, and at least two coil power generation assemblies are arranged on the inner wall of the bottom of the half box body along the circumferential direction. The center pin is overlapped and is equipped with carousel and two vibration piece dishes that set up along the carousel symmetry, and vibration piece dish is equipped with two at least piezoelectricity electricity generation subassemblies along the circumferencial direction. The turntable is provided with at least two magnets penetrating through the turntable along the circumferential direction. The external environment transmits low-frequency vibration to the power generation box through the rocker, and the power generation box uses a plurality of piezoelectric power generation assemblies on the vibrating piece disc to match with a plurality of groups of magnets of the rotary disc and a plurality of coil power generation assemblies on the box body, so that high-frequency vibration power generation of the piezoelectric power generation assemblies and electromagnetic induction power generation of the coil power generation assemblies are realized, and the power generation efficiency is improved.

Description

Piezoelectric and electromagnetic combined type power generation device for capturing wave energy
Technical Field
The invention belongs to the field of power generation devices, and particularly relates to a piezoelectric and electromagnetic combined power generation device for capturing wave energy.
Background
In order to realize self-power supply of a wireless sensor for monitoring the marine environment, numerous scholars at home and abroad propose a method for converting wave energy into electric energy by utilizing an electromagnetic induction law, a piezoelectric effect and a triboelectric effect so as to supply power to the wireless sensor, and design various small power generation devices. Most of the devices adopt a resonance type mechanical structure, for example, an electromagnetic power generation device, and a magnet vibrates in a reciprocating manner under the driving of waves to cut a magnetic induction line so as to generate induced electromotive force in a coil. Such resonant power generation devices achieve maximum output power when the external excitation frequency is equal to their own natural frequency.
The existing resonance type generating device can generate larger output power when the external excitation frequency is equal to the natural frequency of the existing resonance type generating device, namely, the existing resonance type generating device reaches a resonance state. However, the operating frequency range is very narrow, and the resonant power generation device can normally operate only in a narrow frequency range near the natural frequency. For most power generation devices based on environmental vibrations, the natural frequency of the power generation device itself is much higher than the frequency of the environmental vibrations. According to a theoretical formula, the output power of the power generation device is proportional to the third power of the working frequency of the power generation device. This means that the output power of the power plant will drop sharply when the excitation frequency of the external environment decreases. In order to make the output power as large as possible, the natural frequency of the power generation device must be close to the ambient vibration frequency. The environmental vibrations are low frequency vibrations, typically in the frequency range of 1-20Hz, the frequency of the waves is less than 5Hz, and in order to keep the natural frequency of the power plant in its vicinity, the overall size of the power plant must be increased, since, in general, the natural frequency of the power plant is inversely proportional to its overall size. However, the increase in the volume of the power generation device greatly reduces the output power density (the ratio of the output power to the working volume), and also causes a series of problems such as an increase in the manufacturing cost and an increase in the difficulty of installation.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a piezoelectric and electromagnetic combined type power generation device for capturing wave energy, wherein low-frequency vibration is transmitted to a power generation box by an external environment (such as waves) through a rocker, and the power generation box uses a plurality of piezoelectric power generation components on a vibrating plate to be matched with a plurality of groups of magnets of a rotating plate and a plurality of coil power generation components on a box body, so that high-frequency vibration power generation (piezoelectric effect) of the piezoelectric power generation components and electromagnetic induction power generation of the coil power generation components are realized, and the power generation efficiency is improved.
In order to solve the technical problems, the invention adopts the following technical scheme:
a piezoelectric and electromagnetic combined type power generation device for capturing wave energy comprises a floater, a swing rod, a power generation box and a support, wherein the swing rod extends out of the power generation box, the extending end of the swing rod is hinged with the floater, and the power generation box is supported by the support; wherein the content of the first and second substances,
the power generation box comprises a box body, the box body comprises two cylindrical half box bodies with one open ends, arc-shaped notches are formed in the upper edges of the side walls of the half box bodies, and arc-shaped notches of the two half box bodies are combined into an arc-shaped groove; at least two coil power generation assemblies are arranged on the inner wall of the bottom of the half box body along the circumferential direction, and each coil power generation assembly comprises a coil support and a coil sleeved on the coil support; a central shaft supported on the inner wall of the half box body is arranged along the central axis of the box body, and a rotary table and two vibrating piece discs symmetrically arranged along the rotary table are sleeved on the central shaft; the vibrating piece disc is provided with at least two piezoelectric power generation components along the circumferential direction, and each piezoelectric power generation component comprises a cantilever beam and piezoelectric pieces and magnets which are attached to the upper surface and the lower surface of the cantilever beam and are sequentially arranged along the radial direction; the turntable is provided with at least two magnets penetrating through the turntable along the circumferential direction;
the number of the coil power generation assemblies, the number of the piezoelectric power generation assemblies and the number of the magnets on the turntable which are arranged in the inner space of each half box body are the same, and the central lines of the corresponding coils, the magnets of the piezoelectric power generation assemblies and the magnets of the turntable are on the same straight line;
the swing rod and the turntable are of an integrated structure, and the swing rod extends out of the box body from the arc-shaped groove.
In a specific embodiment, a rolling bearing is arranged between the turntable and the central shaft.
In a specific embodiment, sleeves are arranged between the rolling bearing and the two diaphragm plates and between the diaphragm plates and the half box body for axial positioning.
In a specific embodiment, the vibrating plate disc and the central shaft are circumferentially positioned by key connection.
In a specific embodiment, the turntable is provided with an arc-shaped through hole and/or a circular through hole along the circumferential direction.
In a specific embodiment, the magnets of the piezoelectric power generation assembly and the magnets of the turntable are both cylindrical.
In a specific embodiment, the cantilever beam of the piezoelectric power generation component is a brass sheet.
In one embodiment, the central angle of the arc-shaped slot is 100 degrees.
The invention has the following beneficial effects:
1. the wave motion is converted into the rotary motion of the rotary plate by the floater and the swing rod, and the rotary motion of the rotary plate is converted into the up-and-down vibration of the cantilever beam by the magnets.
2. The cooperation of a plurality of piezoelectricity electricity generation subassemblies on the piece dish that shakes and a plurality of magnets of carousel constitutes the mechanism of raising the frequency, utilizes the mutual acting force between the magnet to drive the cantilever beam free oscillation, and the vibration of the higher frequency of reuse cantilever beam is generated electricity.
3. The output power and the power density are improved by combining a piezoelectric power generation mechanism and an electromagnetic power generation mechanism.
Drawings
FIG. 1 is a schematic structural diagram of a piezoelectric and electromagnetic hybrid power generation device for capturing wave energy according to the present invention;
FIG. 2 is a partial structural sectional view of the power generation box;
FIG. 3 is an exploded schematic view of a power generation box;
FIG. 4 is an exploded view of the half-case and coil power generation assembly;
FIG. 5 is a schematic diagram of a vibrating plate coil structure and a partial structure thereof;
FIG. 6 is an exploded view of the assembled structure of the vibrating plate disk and the central shaft;
FIG. 7 is a schematic diagram of the operation of the power generation process of the present invention.
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 some, not all, embodiments of the present invention. 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.
Referring to fig. 1 to 7, the invention discloses a piezoelectric and electromagnetic combined type power generation device for capturing wave energy, which comprises a floater 1, a swing rod 2, a power generation box 3 and a support 5, wherein an arc-shaped groove 4 with a central angle of 100 degrees is formed in a box body of the power generation box 3, and the swing rod 2 extends out of the box body of the power generation box 3 and can swing up and down in the arc-shaped groove 4. The extending end of the swing rod 2 is connected with the floater 1 in a hinged mode, and the power generation box 3 is supported on the support 5.
The box of the power generation box 3 is formed by assembling two cylindrical half-boxes 31 with one open ends (which can be connected by bolts or screws), the upper edges of the side walls of the half-boxes 31 are provided with arc-shaped notches, and the arc-shaped notches of the two half-boxes 31 are combined into an arc-shaped groove 4. The inner wall of the bottom of the half box body 31 is provided with a plurality of coil generating assemblies 9 along the circumferential direction, and each coil generating assembly 9 comprises a coil support 91 and a coil 92 sleeved on the coil support 91, and the coil support 91 can be installed in a spot-facing hole 311 on the inner wall of the half box body 31 to play roles in positioning and fixing.
Be equipped with the center pin 8 that supports in half box 31 inner wall along the axis of box, the cover is equipped with carousel 6 and two vibrating plate discs 7 along 6 symmetries settings of carousel on the center pin 8. The vibrating piece disc 7 is provided with a plurality of piezoelectric power generation components 10 along the circumferential direction, and each piezoelectric power generation component 10 comprises a cantilever beam 11 (which can be a brass sheet with the thickness of 0.4mm and the tail part of the cantilever beam is fixedly installed) and a piezoelectric piece 12 and a magnet 13 which are attached to the upper surface and the lower surface of the cantilever beam 11 and are sequentially arranged along the radial direction. The turntable 6 is provided with a plurality of magnets 61 penetrating through the turntable 6 along the circumferential direction, and the swing rod 2 and the turntable 6 are of an integrated structure. The number of coil power generation assemblies 9 and the number of piezoelectric power generation assemblies 10 provided in the internal space of each half casing 31 are the same as the number of magnets 61 on the turntable 6, and the center lines of the corresponding coils 92, magnets 13 of the piezoelectric power generation assemblies 10, and magnets 61 of the turntable 6 are aligned in a straight line when power is generated.
The magnet 61 on the rotary table 6 can be installed in a through hole formed in the rotary table 6, and the magnet 61 transmits the kinetic energy of the oscillating bar 2 to the piezoelectric power generation assembly 10 in a magnetic coupling mode. The rotating disk 6 may be provided with an arc or circular hole along the circumferential direction to reduce the mass and the moment of inertia. The turntable 6 is mounted on the center shaft 8 via a rolling bearing 81, and separates a moving member (the turntable 6) from a fixed member (the center shaft 8) to rotate the turntable 6 relative to the center shaft 8 and the diaphragm plate 7. Sleeves 82 are arranged between the rolling bearing 81 and the two diaphragm discs 7 and between the diaphragm discs 7 and the half-box 31 for axial positioning, and the diaphragm discs 7 and the central shaft 8 are connected through keys 83 for circumferential positioning.
The power generation process of the piezoelectric and electromagnetic combined power generation device is shown in fig. 7, and the principle is as follows: when the floater 1 swings up and down along with waves, the swing rod 2 swings up and down along with the waves, so that the rotating disc 6 rotates back and forth at a certain frequency. When the rotary disc 6 and the vibrating piece disc 7 rotate relatively, the magnet 13 on the cantilever beam 11 is subjected to the periodic magnetic force of the magnet 61 on the rotary disc 6, so that the cantilever beam 11 generates bending vibration. The piezoelectric sheet 12 adhered to the cantilever beam 11 is deformed, and according to the piezoelectric effect, the piezoelectric sheet deformed by an external force is polarized, and then generates electric energy. In addition, the cantilever beam 11 vibrates, so that the relative distance between the magnet 13 on the cantilever beam 11 and the coil 92 of the coil power generation assembly 9 changes rapidly in unit time, the magnetic flux in the coil 92 also changes, and the kinetic energy is converted into electric energy through the law of electromagnetic induction.
In the above process, the cantilever 11 freely vibrates at its natural frequency, resulting in high frequency vibration. The swinging frequency of the rocker 2 is equal to the frequency of wave motion, the frequency is usually very low (<5Hz), but in the swinging process of the rocker 2, after the cantilever beam 11 is pulled by the magnet each time, the cantilever beam can freely vibrate at the natural frequency which is far higher than the frequency of waves and can reach 100-500 HZ. Therefore, the frequency is improved, and finally the output power and the energy conversion efficiency of the power generation device can be improved.
Aiming at the problem that low-frequency large-amplitude wave energy is difficult to generate electricity, the invention combines the frequency raising mechanism with the electromechanical conversion mechanism based on the piezoelectric effect and the electromagnetic induction effect, thereby improving the conversion efficiency of electric energy and improving the output power density. The invention has great application potential in realizing self-power supply for marine electronic devices such as wireless sensors for marine environment monitoring and the like.
It is to be understood that the exemplary embodiments described herein are illustrative and not restrictive. Although one or more embodiments of the present invention have been described with reference to the accompanying drawings, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.

Claims (8)

1. The piezoelectric and electromagnetic combined type power generation device for capturing wave energy is characterized by comprising a floater, a swing rod, a power generation box and a support, wherein the swing rod extends out of the power generation box, one extending end of the swing rod is hinged with the floater, and the power generation box is supported by the support; wherein the content of the first and second substances,
the power generation box comprises a box body, the box body comprises two cylindrical half box bodies with one open ends, arc-shaped notches are formed in the upper edges of the side walls of the half box bodies, and arc-shaped notches of the two half box bodies are combined into an arc-shaped groove; at least two coil power generation assemblies are arranged on the inner wall of the bottom of the half box body along the circumferential direction, and each coil power generation assembly comprises a coil support and a coil sleeved on the coil support; a central shaft supported on the inner wall of the half box body is arranged along the central axis of the box body, and a rotary table and two vibrating piece discs symmetrically arranged along the rotary table are sleeved on the central shaft; the vibrating piece disc is provided with at least two piezoelectric power generation components along the circumferential direction, and each piezoelectric power generation component comprises a cantilever beam and piezoelectric pieces and magnets which are attached to the upper surface and the lower surface of the cantilever beam and are sequentially arranged along the radial direction; the turntable is provided with at least two magnets penetrating through the turntable along the circumferential direction;
the number of the coil power generation assemblies, the number of the piezoelectric power generation assemblies and the number of the magnets on the turntable which are arranged in the inner space of each half box body are the same, and the central lines of the corresponding coils, the magnets of the piezoelectric power generation assemblies and the magnets of the turntable are on the same straight line;
the swing rod and the turntable are of an integrated structure, and the swing rod extends out of the box body from the arc-shaped groove.
2. The piezoelectric and electromagnetic hybrid power generation device for capturing wave energy as claimed in claim 1, wherein a rolling bearing is disposed between the turntable and the central shaft.
3. The combined piezoelectric and electromagnetic generating device for capturing wave energy according to claim 2, wherein sleeves are provided between the rolling bearing and the two diaphragm discs and between the diaphragm discs and the half-case for axial positioning.
4. The piezo-electric and electromagnetic hybrid power plant for capturing wave energy of claim 3, wherein said diaphragm discs are circumferentially positioned by keyed connection to said central shaft.
5. The combined piezoelectric and electromagnetic generating apparatus for capturing wave energy according to claim 1, wherein the rotating disc is provided with arc-shaped through holes and/or circular through holes along a circumferential direction.
6. The piezo-electric and electromagnetic hybrid power generation device for capturing wave energy of claim 1, wherein the magnets of the piezo-electric power generation assembly and the magnets of the rotating disc are both cylindrical.
7. The piezo-electric and electromagnetic hybrid power generation apparatus for capturing wave energy of claim 1, wherein the cantilever beam of the piezo-electric power generation assembly is a brass sheet.
8. The piezo-electric and electromagnetic hybrid power generation device for capturing wave energy of claim 1, wherein the arc slot has a central angle of 100 degrees.
CN202110238726.9A 2021-03-04 2021-03-04 Piezoelectric and electromagnetic combined type power generation device for capturing wave energy Pending CN112780480A (en)

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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113217260A (en) * 2021-06-18 2021-08-06 浙大宁波理工学院 Wave energy power generation device
CN113241967A (en) * 2021-06-25 2021-08-10 上海大学 Piezoelectric friction electricity hybrid energy collector for wave motion
CN113364344A (en) * 2021-06-10 2021-09-07 上海大学 Normal temperature heat engine power generation facility based on drinking water bird
CN114513104A (en) * 2022-01-24 2022-05-17 浙江大学 Rolling type vibration energy collector
CN115676989A (en) * 2022-11-16 2023-02-03 上海莫秋环境技术有限公司 Pipeline built-in water treatment device and method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113364344A (en) * 2021-06-10 2021-09-07 上海大学 Normal temperature heat engine power generation facility based on drinking water bird
CN113364344B (en) * 2021-06-10 2022-03-04 上海大学 Normal temperature heat engine power generation facility based on drinking water bird
CN113217260A (en) * 2021-06-18 2021-08-06 浙大宁波理工学院 Wave energy power generation device
CN113217260B (en) * 2021-06-18 2023-02-21 浙大宁波理工学院 Wave energy power generation device
CN113241967A (en) * 2021-06-25 2021-08-10 上海大学 Piezoelectric friction electricity hybrid energy collector for wave motion
CN114513104A (en) * 2022-01-24 2022-05-17 浙江大学 Rolling type vibration energy collector
CN114513104B (en) * 2022-01-24 2023-12-29 浙江大学 Rolling type vibration energy collector
CN115676989A (en) * 2022-11-16 2023-02-03 上海莫秋环境技术有限公司 Pipeline built-in water treatment device and method

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