CN116358649B - Intelligent water meter with Bluetooth communication function - Google Patents

Intelligent water meter with Bluetooth communication function Download PDF

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Publication number
CN116358649B
CN116358649B CN202310410801.4A CN202310410801A CN116358649B CN 116358649 B CN116358649 B CN 116358649B CN 202310410801 A CN202310410801 A CN 202310410801A CN 116358649 B CN116358649 B CN 116358649B
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China
Prior art keywords
plug
side pipe
rotor
intelligent water
bluetooth communication
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CN202310410801.4A
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Chinese (zh)
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CN116358649A (en
Inventor
袁玉英
罗永刚
邹志远
张红
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Zibo Billion Electron Co ltd
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Zibo Billion Electron Co ltd
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Priority to CN202310410801.4A priority Critical patent/CN116358649B/en
Publication of CN116358649A publication Critical patent/CN116358649A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/56Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03BMACHINES OR ENGINES FOR LIQUIDS
    • F03B17/00Other machines or engines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03GSPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G1/00Spring motors
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measuring Volume Flow (AREA)

Abstract

The invention relates to an intelligent water meter with Bluetooth communication, which comprises: a meter body, in which a Bluetooth module is arranged; the main runner is provided with a piston mechanism, and the piston mechanism supplies power to the Bluetooth module through a water hammer effect. The piston mechanism includes: a side pipe communicating with the main flow passage; the plug is arranged in the side pipe in a sliding manner; the stator is fixedly arranged at the outer end of the side pipe; the rotor is rotationally arranged at the outer end of the side pipe, can rotate relative to the stator and is in threaded connection with the plug. The plug comprises: the plug body is arranged in the side pipe in a sliding manner and is connected with the inner wall of the side pipe in a sealing manner; the cylinder is arranged at the outer end of the plug body and is provided with a spiral guide groove in threaded connection with the rotor. The rotor includes: a rotor body rotatable with respect to the stator; a center hole formed in the center of the rotor body; the guide block is rotatably arranged in the central hole; the column body is provided with an axial guide groove; the Bluetooth module of the intelligent water meter can be powered by the water hammer effect.

Description

Intelligent water meter with Bluetooth communication function
Technical Field
The invention relates to the technical field of water meters, in particular to an intelligent water meter with Bluetooth communication.
Background
The water meter is used for measuring water flow, the measured data is an accumulated flow value, and the unit is volume/volume unit. Along with the development of the internet of things technology and the wind of intelligent manufacturing, the intelligent water meter is improved, and the meter reading data is uploaded in time through the internet of things technology, so that the current popular trend is realized. Various intelligent internet of things water meters have been developed, but various problems have also been generated at the same time.
The intelligent water meter with the Bluetooth communication is a common intelligent water meter of the Internet of things, and as is well known, the Bluetooth module is powered by a power supply. Batteries are commonly used in the prior art for power. However, the disadvantages of battery powered devices are also evident, as the battery has a limited capacity and requires periodic replacement. Furthermore, water meters are generally installed in narrow and dark areas and have a long service life, which is very troublesome if the batteries are to be replaced. Therefore, the existing Bluetooth communication intelligent water meter is required to have a self-generating function, so that the periodic replacement of the battery is avoided.
Disclosure of Invention
In order to solve the technical problems in the background technology, the invention provides the intelligent water meter with the Bluetooth communication, which can supply power to the Bluetooth module of the intelligent water meter through the water hammer effect.
The technical scheme adopted for solving the technical problems is as follows:
an intelligent water meter with bluetooth communication, comprising:
a meter body, in which a Bluetooth module is arranged;
the main runner is provided with a piston mechanism, and the piston mechanism supplies power to the Bluetooth module through a water hammer effect.
Further, the piston mechanism includes:
a side pipe communicating with the main flow passage;
the plug is arranged in the side pipe in a sliding manner;
the stator is fixedly arranged at the outer end of the side pipe;
the rotor is rotationally arranged at the outer end of the side pipe, can rotate relative to the stator and is in threaded connection with the plug.
Further, a spring is arranged between the side pipe and the plug.
Further, the plug comprises:
the plug body is arranged in the side pipe in a sliding manner and is connected with the inner wall of the side pipe in a sealing manner;
the cylinder is arranged at the outer end of the plug body and is provided with a spiral guide groove in threaded connection with the rotor.
Further, the rotor includes:
a rotor body rotatable with respect to the stator;
a center hole formed in the center of the rotor body;
the guide block is rotatably arranged in the central hole;
the column body is provided with an axial guide groove;
when the plug moves to a direction close to the main runner, the guide block is connected with the spiral guide groove for transmission;
when the plug moves in a direction away from the main runner, the guide block is connected with the axial guide groove for transmission.
Further, a rotating shaft is arranged at the inner side of the central hole, and a positioning plate is arranged on the rotating shaft;
the guide block is provided with a positioning cavity, and the positioning plate can swing in the positioning cavity by a certain angle.
Further, the positioning plate and the positioning cavity are respectively provided with an interactive magnet.
Further, a telescopic air bag is arranged in the side pipe, the opening end of the air bag is communicated with the main runner, and the telescopic end of the air bag is fixedly connected with the plug.
Further, a displacement sensor for detecting the position of the plug is arranged on the side pipe.
Further, the outer end of the side pipe is provided with a bracket, and the displacement sensor is arranged on the bracket.
The invention has the beneficial effects that:
(1) The Bluetooth module of the intelligent water meter can be powered by the instantaneous water hammer effect of the water way opening and closing, and compared with the power generation mode of driving the blades through water flow, the Bluetooth module of the intelligent water meter does not influence the flow and the pressure of the water way when water is normally used.
(2) If the water hammer effect when closing the water route directly converts electric energy, then need just generate electricity when the plug is to the direction removal of keeping away from the sprue, the resistance that the plug received is great this moment to influence the plug and to the absorption of water hammer effect energy, generating efficiency is lower. Therefore, when the waterway is closed, the impact force generated by the water hammer effect is stored as the elastic potential energy of the spring, and when the waterway is opened, the elastic potential energy of the spring is released to charge, so that the energy of the water hammer effect can be more effectively utilized to generate power.
(3) The position of the plug in the side pipe can reflect the water pressure, and the water pressure in the main flow channel can be monitored in real time by detecting the position of the plug.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a cross-sectional view of the piston mechanism;
FIG. 4 is an exploded view of the piston mechanism;
FIG. 5 is a cross-sectional view of the rotor;
FIG. 6 is an enlarged view of a portion of FIG. 5 at position A;
FIG. 7 is a schematic view of the structure of the plug;
FIG. 8 is a view showing the positional relationship between the stopper and the guide block when the stopper moves in a direction approaching the main flow path;
fig. 9 is a positional relationship diagram between the plug and the guide block when the plug moves in a direction away from the main flow path.
In the figure:
1. the meter body 2, the main runner 3, the side pipe 4, the air bag 5, the plug 6, the spring 7, the stator 8, the rotor 9, the bracket 10 and the displacement sensor
51. Plug body, 52, column body, 53, axial guide groove, 54, spiral guide groove
81. Rotor body, 82, central hole, 83, guide block, 84, spindle, 85, locating plate, 86, locating cavity.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The utility model provides a take bluetooth communication intelligent water gauge, includes table body 1, is equipped with the bluetooth module that is used for the communication in table body 1. The main runner 2 is arranged in the meter body 1, the piston mechanism is arranged on the main runner 2, and the piston mechanism can supply power to the Bluetooth module through the water hammer effect. The water hammer effect means that the inner wall of the water pipe is smooth and the water flow is free. When the open valve is suddenly closed, the water flow will generate a pressure against the valve and the pipe wall, mainly the valve. Because the pipe wall is smooth, the subsequent water flow rapidly reaches the maximum under the action of inertia and generates a destructive action, namely a 'water hammer effect' in hydraulics, namely a positive water hammer. The water hammer effect is only related to the inertia of water, and is not related to the water pump, namely, the water hammer effect is utilized for generating power, so that the load of the water pump is not increased, and the normal flow of a waterway is not influenced.
The specific structure of the piston mechanism comprises a side pipe 3 communicated with the main runner 2. The plug 5 is slidably disposed within the side tube 3. The plug 5 is in sealing connection with the side pipe 3, namely, water in the side pipe 3 can push the plug 5 to slide. And a spring 6 is arranged between the side pipe 3 and the plug 5, namely, when the plug 5 slides in a direction away from the main runner 2, the spring 6 can be compressed. In order to realize the sealing between the plug 5 and the side pipe 3, a telescopic air bag 4 is arranged in the side pipe 3, the opening end of the air bag 4 is communicated with the main runner 2, the telescopic end of the air bag 4 is fixedly connected with the plug 5, and the side pipe 3 and the plug 5 can be in sealing connection with each other by small friction force through the air bag 4.
The stator 7 is fixedly arranged at the outer end of the side pipe 3, the rotor 8 is rotatably arranged at the outer end of the side pipe 3, the rotor 8 is in threaded connection with the plug 5, the rotor 8 can rotate relative to the stator 7, and when the rotor 8 rotates relative to the stator 7, electric energy can be generated between the rotor 8 and the plug through electromagnetic induction, so that power is supplied to the Bluetooth module.
The concrete structure of the plug 5 comprises a plug body 51 which is arranged in the side pipe 3 in a sliding manner, and the plug body 51 is connected with the inner wall of the side pipe 3 in a sealing manner. The outer end of the plug body 51 is provided with a column body 52, the column body 52 is provided with a spiral guide groove 54 in threaded connection with the rotor 8, and the rotor 8 can be driven to rotate by sliding of the plug body 5 through the spiral guide groove 54.
The specific structure of the rotor 8 includes a rotor body 81 rotatable with respect to the stator 7. A center hole 82 is opened at the center of the rotor body 81. The guide block 83 is rotatably disposed within the central bore 82. The column 52 is provided with an axial guide 53.
When the plug 5 moves towards the direction approaching the main runner 2, the guide block 83 rotates to be in the same direction as the spiral guide groove 54, and the guide block 83 is connected with the spiral guide groove 54 for transmission; when the plug 5 moves away from the main flow passage 2, the guide block 83 rotates to be in the same direction as the axial guide groove 53, and the guide block 83 is connected with the axial guide groove 53 for transmission.
Can realize the rotation function of guide block 83 through structures such as motor, swing electricity jar, this application adopts following technical scheme: the inner side of the central hole 82 is provided with a rotating shaft 84, the guide block 83 is rotatably sleeved on the rotating shaft 84, the rotating shaft 84 is provided with a positioning plate 85, and the positioning plates 85 are arranged on two sides of the rotating shaft 84 in a mirror image mode. The guide block 83 is provided with a positioning cavity 86, and the positioning plate 85 can swing in the positioning cavity 86 by a certain angle, so that the swing angle of the guide block 83 relative to the rotating shaft 84 is limited. The positioning plate 85 and the positioning chamber 86 are provided with magnets that interact with each other, and the guide block 83 is initially positioned in the direction along the spiral guide groove 54 by the constraint of magnetic force, and the guide block 83 can be rotated to the direction along the axial guide groove 53 by an external force, and when the external force is lost, the guide block 83 can be restored to the direction along the spiral guide groove 54. Of course, the positioning plate 85 and the positioning chamber 86 may be provided with respective interacting electromagnets, which are electrically controlled to generate magnetic force to drive the rotation of the guide block 83, but the electromagnet is not a preferred embodiment.
The outer end of the side pipe 3 is provided with a bracket 9, the bracket 9 is provided with a displacement sensor 10, and the displacement sensor 10 can detect the position of the plug 5, thereby detecting the water pressure in the flow channel.
The specific working method comprises the following steps:
when the tap is closed, the water pressure in the main runner 2 is increased due to the water hammer effect, the plug 5 in the side pipe 3 is driven by the water pressure to move in a direction away from the main runner 2, the spring 6 is compressed, at the moment, the guide block 83 is matched with the axial guide groove 53 for transmission, and a certain rotation resistance exists between the rotor 8 and the stator 7, so that the rotor 8 is kept fixed and not rotated, only the spring 6 is compressed, and the energy of the water hammer effect is directly converted into elastic potential energy of the spring 6.
When the tap is opened, the water pressure in the main runner 2 is reduced, and the spring 6 drives the plug 5 in the side pipe 3 to move towards the direction close to the main runner 2, at the moment, the guide block 83 and the spiral guide groove 54 are matched for transmission, and the plug 5 drives the rotor 8 to rotate relative to the stator 7, so that the elastic potential energy of the spring 6 is converted into electric energy to supply power to the Bluetooth module.
It should be further noted that the guide block 83 can cooperate with the axial guide groove 53 or the spiral guide groove 54 according to the movement direction of the plug 5. In the above process, the structure can be realized by completely relying on the magnetic structure between the positioning plate 85 and the positioning cavity 86, the guide block 83 is not required to rotate by external driving force, and the structure is simpler, more convenient and more efficient.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.

Claims (6)

1. Take bluetooth communication intelligent water gauge, characterized by includes:
a meter body (1), wherein a Bluetooth module is arranged in the meter body (1);
the Bluetooth module comprises a main runner (2), wherein a piston mechanism is arranged on the main runner (2), and the piston mechanism supplies power to the Bluetooth module through a water hammer effect;
the piston mechanism includes:
a side pipe (3) which is communicated with the main runner (2);
the plug (5) is arranged in the side pipe (3) in a sliding manner;
the stator (7) is fixedly arranged at the outer end of the side pipe (3);
the rotor (8) is rotationally arranged at the outer end of the side pipe (3), the rotor (8) can rotate relative to the stator (7), and the rotor (8) is in threaded connection with the plug (5);
a spring (6) is arranged between the side pipe (3) and the plug (5);
the plug (5) comprises:
the plug body (51) is arranged in the side pipe (3) in a sliding manner and is connected with the inner wall of the side pipe (3) in a sealing manner;
the cylinder (52) is arranged at the outer end of the plug body (51), and a spiral guide groove (54) in threaded connection with the rotor (8) is formed in the cylinder (52);
the rotor (8) comprises:
a rotor body (81) rotatable with respect to the stator (7);
a center hole (82) which is formed in the center of the rotor main body (81);
the guide block (83) is rotatably arranged in the central hole (82);
the column body (52) is provided with an axial guide groove (53);
when the plug (5) moves towards the direction approaching the main runner (2), the guide block (83) is connected with the spiral guide groove (54) for transmission;
when the plug (5) moves away from the main runner (2), the guide block (83) is connected with the axial guide groove (53) for transmission.
2. The intelligent water meter with Bluetooth communication according to claim 1, wherein,
a rotating shaft (84) is arranged on the inner side of the central hole (82), and a positioning plate (85) is arranged on the rotating shaft (84);
the guide block (83) is provided with a positioning cavity (86), and the positioning plate (85) can swing in the positioning cavity (86) for a certain angle.
3. The intelligent water meter with Bluetooth communication according to claim 2, wherein,
the positioning plate (85) and the positioning cavity (86) are respectively provided with an interactive magnet.
4. The intelligent water meter with Bluetooth communication according to claim 1, wherein,
the side pipe (3) is internally provided with a telescopic air bag (4), the opening end of the air bag (4) is communicated with the main runner (2), and the telescopic end of the air bag (4) is fixedly connected with the plug (5).
5. The intelligent water meter with Bluetooth communication according to claim 1, wherein,
the side pipe (3) is provided with a displacement sensor (10) for detecting the position of the plug (5).
6. The intelligent water meter with Bluetooth communication according to claim 5, wherein,
the outer end of the side pipe (3) is provided with a bracket (9), and the displacement sensor (10) is arranged on the bracket (9).
CN202310410801.4A 2023-04-13 2023-04-13 Intelligent water meter with Bluetooth communication function Active CN116358649B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310410801.4A CN116358649B (en) 2023-04-13 2023-04-13 Intelligent water meter with Bluetooth communication function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310410801.4A CN116358649B (en) 2023-04-13 2023-04-13 Intelligent water meter with Bluetooth communication function

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Publication Number Publication Date
CN116358649A CN116358649A (en) 2023-06-30
CN116358649B true CN116358649B (en) 2024-02-23

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1815852A (en) * 2005-02-05 2006-08-09 中国科学院沈阳自动化研究所 Underwater DC brushless oil-filled motor structure
CN201251458Y (en) * 2008-09-05 2009-06-03 邦富电子股份有限公司 Water meter capable of automatically generating electricity and transmitting data
CN103643927A (en) * 2013-12-08 2014-03-19 大庆泰泽机械加工有限公司 Linear water distribution device for oil field water injection well
CN112360674A (en) * 2020-11-10 2021-02-12 青岛鼎信通讯股份有限公司 Intelligent water meter energy-taking device based on water hammer effect
CN214277081U (en) * 2021-03-16 2021-09-24 玉林师范学院 Novel intelligent water meter
CN216348923U (en) * 2021-12-11 2022-04-19 耿启征 Novel intelligent water meter
CN216954671U (en) * 2022-04-14 2022-07-12 临沂银江不锈钢水表制造有限公司 Environment-friendly high-precision stainless steel water meter
CN115265700A (en) * 2022-08-01 2022-11-01 临沂市浪淘水表有限公司 But bluetooth remote operation's thing networking intelligent water gauge
CN217841286U (en) * 2022-06-24 2022-11-18 肇庆市高要区中天明五金科技有限公司 Hydraulic buffer ground shaft

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6612188B2 (en) * 2001-01-03 2003-09-02 Neptune Technology Group Inc. Self-powered fluid meter
WO2020159950A1 (en) * 2019-01-28 2020-08-06 The Texas A&M University System Method and device to measure multiphase flow

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1815852A (en) * 2005-02-05 2006-08-09 中国科学院沈阳自动化研究所 Underwater DC brushless oil-filled motor structure
CN201251458Y (en) * 2008-09-05 2009-06-03 邦富电子股份有限公司 Water meter capable of automatically generating electricity and transmitting data
CN103643927A (en) * 2013-12-08 2014-03-19 大庆泰泽机械加工有限公司 Linear water distribution device for oil field water injection well
CN112360674A (en) * 2020-11-10 2021-02-12 青岛鼎信通讯股份有限公司 Intelligent water meter energy-taking device based on water hammer effect
CN214277081U (en) * 2021-03-16 2021-09-24 玉林师范学院 Novel intelligent water meter
CN216348923U (en) * 2021-12-11 2022-04-19 耿启征 Novel intelligent water meter
CN216954671U (en) * 2022-04-14 2022-07-12 临沂银江不锈钢水表制造有限公司 Environment-friendly high-precision stainless steel water meter
CN217841286U (en) * 2022-06-24 2022-11-18 肇庆市高要区中天明五金科技有限公司 Hydraulic buffer ground shaft
CN115265700A (en) * 2022-08-01 2022-11-01 临沂市浪淘水表有限公司 But bluetooth remote operation's thing networking intelligent water gauge

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