CN111175853A - Intelligent rainfall detection equipment based on computer vision - Google Patents
Intelligent rainfall detection equipment based on computer vision Download PDFInfo
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- CN111175853A CN111175853A CN202010026419.XA CN202010026419A CN111175853A CN 111175853 A CN111175853 A CN 111175853A CN 202010026419 A CN202010026419 A CN 202010026419A CN 111175853 A CN111175853 A CN 111175853A
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- G01—MEASURING; TESTING
- G01W—METEOROLOGY
- G01W1/00—Meteorology
- G01W1/14—Rainfall or precipitation gauges
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Abstract
The invention discloses intelligent rainfall detection equipment based on computer vision, and particularly relates to the technical field of rainfall detection equipment. According to the invention, the water storage tank is arranged for pre-selecting stored water, rainwater is collected by the rainwater collection hopper, the liquid level in the detection pipe rises by utilizing the principle of the communicating vessel, and the detection camera performs video detection on the rising measurement ruler strip, so that the detection accuracy is improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of rainfall detection equipment, in particular to intelligent rainfall detection equipment based on computer vision.
Background
Precipitation is the depth at which liquid or solid (after melting) water falling from the sky to the ground accumulates on the water surface without evaporation, penetration, or loss. Taking mm as a unit, taking a decimal number in meteorological observation. The precipitation of 1 mm means that the precipitation reaches the water depth of 1 mm above one mu of land. Precipitation is data that measures how much precipitation is in a region. In particular liquid and solid (after melting) precipitation falling from the sky to the ground, without evaporation, penetration and loss, to a depth at which it accumulates on the horizontal plane. The weather bureau is a government department mainly working on service items such as weather forecast, climate forecast, weather modification, drought monitoring and forecast, lightning protection, agricultural weather and the like, generally refers to the chinese weather bureau and subordinate units thereof, and is responsible for government administration and management functions of national weather work and organization and management of national weather work, and the national weather bureau is a scientific and basic social public service, and gradually forms a basic research, high and new technology research, application and development research system of weather science and technology. A rain gauge is an instrument used to measure the amount of rainfall accumulated over a period of time. The shell is a metal cylinder and is divided into an upper section and a lower section, the upper section is a water containing funnel with the caliber of 20 cm, the area and the shape of a mouth of the funnel are kept for preventing rainwater from splashing, and the mouth of the funnel is made into a blade shape with a straight inner part and an inclined outer part by hard copper; a water storage bottle is arranged in the lower section of the barrel and used for collecting rainwater.
The prior art has the following defects: in the use process of the rain gauge, rainwater continuously enters the water storage measuring cylinder, so that the liquid level in the measuring cylinder continuously fluctuates due to water entering, the floater violently shakes, data detection on the floater is influenced, and the detection accuracy is reduced.
Disclosure of Invention
Therefore, the embodiment of the invention provides intelligent rainfall detection equipment based on computer vision, rainwater is collected by a rainwater collection hopper through pre-selecting stored water in a water storage tank, the liquid level in a detection pipe rises by utilizing the principle of a communicating vessel, and a detection camera performs video detection on the rising measurement ruler strip, so that the detection accuracy is improved, and the problem caused by the influence on the detection accuracy due to the fluctuation of the liquid level caused by the falling of the rainwater in the prior art is solved.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions: an intelligent rainfall detection device based on computer vision comprises a device tank body, wherein a water storage tank is fixedly arranged at the bottom of the device tank body, a water inlet pipe is fixedly arranged in the middle of the top end of the water storage tank, a detection pipe is fixedly arranged on one side of the top end of the water storage tank, a floating block is movably arranged in the detection pipe, a lifting detection rod is fixedly arranged at the top of the floating block, a measurement ruler strip is arranged on one side of the detection pipe, the lifting detection rod is fixedly connected with the measurement ruler strip, a detection camera is fixedly arranged on the inner wall of the device tank body, and the receiving end of the detection camera is arranged corresponding to the measurement ruler strip;
the water storage tank is characterized in that a fixed pipe is fixedly arranged on the other side of the top end of the water storage tank, an adjusting water outlet pipe is vertically and fixedly arranged in the middle of the fixed pipe, the adjusting water outlet pipe and the top end inside the water storage tank are horizontally arranged in a collinear manner, an installation plate is fixedly arranged at the top end of the fixed pipe, an adjusting threaded rod is fixedly arranged between the installation plate and the surface of the adjusting water outlet pipe, a movable frame is arranged in the middle of the adjusting threaded rod in a threaded connection manner, an adjusting plug is movably arranged inside the fixed pipe, and the movable;
the rainwater collection bucket is arranged at the top of the equipment tank body, a water diversion pipe is fixedly arranged at the bottom end of the rainwater collection bucket, and the water diversion pipe is sleeved with the top end of the water inlet pipe.
Further, inlet tube and test tube all are vertical state setting, and the same setting of internal diameter, test tube top rear side fixedly connected with overflow pipe, the overflow pipe runs through and stretches out the equipment jar body.
Furthermore, the floating block is made of resin bubbles, the measuring ruler strip is made of a plastic sheet, and scale marks are drawn on the surface of the measuring ruler strip.
Furthermore, the lifting detection rod is set to be U-shaped, a limiting support is fixedly arranged at the top end of the detection tube, and the lifting detection rod penetrates through the middle of the limiting support.
Further, the fixed operation recess that is provided with in device jar body one side, the mounting panel sets up in operation recess bottom, the fixed knob that is provided with in adjusting threaded rod top, the knob sets up inside the operation recess.
Furthermore, a drain pipe is fixedly arranged on one side of the bottom end of the water storage tank, and a sealing plug is detachably arranged inside the drain pipe.
Further, the rainwater is gathered and is fought by stainless steel material, the rainwater is gathered and is fought the bottom and be hourglass hopper-shaped setting, the drainage tube top can be dismantled and be provided with the filtration screen panel.
Further, the rainwater is gathered and is fought outside cover and is equipped with connecting sleeve, connecting sleeve and the threaded connection of the equipment tank body top, the fixed spacing collar that is provided with in equipment tank body top, the connecting sleeve bottom matches with the spacing collar and sets up.
The embodiment of the invention has the following advantages:
1. according to the invention, the water storage tank is pre-selected to store water, excess water in the water storage tank is discharged by utilizing the adjusting water pipe, so that the water in the water storage tank is just in a saturated state, the liquid level is at the bottom ends of the water inlet pipe and the detection pipe, rainwater is collected by the rainwater collection hopper and enters the device from the water inlet pipe, the liquid level in the detection pipe rises by utilizing the principle of a communicating device, the floating block is driven to float upwards, the lifting detection rod is driven to rise, the rising measurement ruler strip is subjected to video detection by utilizing the detection camera, and then detection data is obtained, compared with the existing detection device, the liquid level fluctuation caused by rainwater falling during rainwater collection is avoided, the detection stability is prevented from being influenced, and;
2. according to the rainwater collecting device, the rainwater collecting hopper is arranged for collecting rainwater, the filtering mesh enclosure is used for filtering rainwater, the blocking of an equipment pipeline is avoided, the connecting sleeve is in threaded connection with the top end of the equipment tank body, the rainwater collecting hopper is convenient to mount and dismount, and the equipment is convenient to use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a schematic view of the overall structure provided by the present invention;
FIG. 2 is a schematic view of the structure of part A of FIG. 1 according to the present invention;
FIG. 3 is a schematic view of the overall structure of the float block and the lift detection rod according to the present invention;
FIG. 4 is a schematic top sectional view of a detector tube according to the present invention;
FIG. 5 is a schematic top view of a spacing bracket according to the present invention;
FIG. 6 is a schematic view of the structure of part B shown in FIG. 1 according to the present invention;
FIG. 7 is a schematic view of the overall structure of the filter mesh enclosure according to the present invention;
in the figure: 1 equipment tank body, 2 water storage tanks, 3 inlet tubes, 4 detecting tubes, 5 floating blocks, 6 lifting detecting rods, 7 measuring ruler strips, 8 detecting cameras, 9 fixing tubes, 10 adjusting water outlet tubes, 11 mounting plates, 12 adjusting bolt rods, 13 movable frames, 14 adjusting plugs, 15 rainwater collecting hoppers, 16 water guide tubes, 17 overflow tubes, 18 limiting supports, 19 operating grooves, 20 knobs, 21 drain pipes, 22 sealing plugs, 23 filtering net covers, 24 connecting sleeves and 25 limiting rings.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. 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 the attached drawings 1-5 of the specification, the intelligent rainfall detection device based on computer vision comprises a device tank body 1, wherein a water storage tank 2 is fixedly arranged at the bottom of the device tank body 1, a water inlet pipe 3 is fixedly arranged in the middle of the top end of the water storage tank 2, a detection pipe 4 is fixedly arranged on one side of the top end of the water storage tank 2, a floating block 5 is movably arranged in the detection pipe 4, a lifting detection rod 6 is fixedly arranged at the top of the floating block 5, a measurement ruler strip 7 is arranged on one side of the detection pipe 4, the lifting detection rod 6 is fixedly connected with the measurement ruler strip 7, a detection camera 8 is fixedly arranged on the inner wall of the device tank body 1, and a receiving end of the detection camera 8 is arranged corresponding to the measurement ruler strip 7;
a fixed pipe 9 is fixedly arranged on the other side of the top end of the water storage tank 2, an adjusting water outlet pipe 10 is vertically and fixedly arranged in the middle of the fixed pipe 9, the adjusting water outlet pipe 10 is horizontally and collinearly arranged with the top end inside the water storage tank 2, an installation plate 11 is fixedly arranged at the top end of the fixed pipe 9, an adjusting threaded rod 12 is fixedly arranged between the installation plate 11 and the surface of the adjusting water outlet pipe 10, a movable frame 13 is arranged in the middle of the adjusting threaded rod 12 in a threaded connection mode, an adjusting plug 14 is movably arranged inside the fixed pipe 9, and the movable frame 13 penetrates through the fixed pipe 9 and extends into the fixed;
the top of the equipment tank body 1 is provided with a rainwater collection bucket 15, the bottom end of the rainwater collection bucket 15 is fixedly provided with a water conduit 16, and the water conduit 16 is sleeved with the top end of the water inlet pipe 3.
Further, inlet tube 3 and test tube 4 all are vertical state setting, and the same setting of internal diameter, 4 top rear side fixedly connected with overflow pipes 17 of test tube, overflow pipe 17 runs through and stretches out the equipment jar body 1, makes things convenient for the liquid level in inlet tube 3 and the test tube 4 to be in the same horizontal plane, and inside liquid volume is the same, and overflow pipe 17 conveniently rises to discharge when surpassing the measuring limit at the inside liquid level of test tube 4, and then avoids water leakage, influences the use of equipment.
Further, the floating block 5 is made of resin bubbles, the measuring ruler strip 7 is made of plastic sheets, and scale marks are drawn on the surface of the measuring ruler strip, so that the buoyancy of the floating block 5 is improved, the measuring ruler strip 7 made of the plastic sheets is light in weight, the pressure on the floating block 5 is reduced, and the water quantity is conveniently detected.
Furthermore, the shape of the lifting detection rod 6 is set to be U-shaped, a limiting support 18 is fixedly arranged at the top end of the detection tube 4, the lifting detection rod 6 penetrates through the middle of the limiting support 18, the lifting detection rod 6 is subjected to position limitation in a lifting motion, and the detection precision is prevented from being influenced.
Further, the fixed operation recess 19 that is provided with in 1 one side of the device jar body, the mounting panel 11 sets up in operation recess 19 bottoms, the fixed knob 20 that is provided with in adjusting threaded rod 12 top, knob 20 sets up inside operation recess 19, makes things convenient for operation knob 20 to drive adjusting threaded rod 12 and rotates, makes things convenient for the operation of adjusting plug 14, conveniently controls the inside water yield of water storage tank 2.
The implementation scenario is specifically as follows: when the device is used, water is pre-selected and stored in the water storage tank 2, the adjusting screw rod 12 is driven to rotate by the operating knob 20, the operation of the adjusting plug 14 is convenient, the water quantity in the water storage tank 2 is convenient to control, the adjusting water pipe 10 discharges redundant water in the water storage tank 2, the water in the water storage tank 2 is just in a saturated state, the liquid level is at the bottom ends of the water inlet pipe 3 and the detecting pipe 4, rainwater is collected by the rainwater collecting hopper 15 and enters the device from the water inlet pipe 3, the liquid level in the detecting pipe 4 rises by utilizing the principle of a communicating device, the inner diameters of the water inlet pipe 3 and the detecting pipe 4 are the same, the liquid levels in the water inlet pipe 3 and the detecting pipe 4 are at the same level, the volumes of the internal liquids are the same, the overflow pipe 17 is convenient to discharge when the liquid level in the detecting pipe 4 rises to exceed the measuring limit, further, the water leakage is avoided, limiting support 18 carries out the position to 6 liter elevating movement of lift check rod and prescribes a limit to, avoids influencing the detection precision, detects camera 8 and carries out video detection to the measurement chi strip 7 that rises, and then obtains detection data, and when avoiding the rainwater to gather, the liquid level that the rainwater whereabouts caused is undulant, avoids influencing the stability that detects, improves and detects the accuracy.
Referring to the attached drawings 1 and 6-7 of the specification, in the intelligent rainfall detection device based on computer vision, a drain pipe 21 is fixedly arranged on one side of the bottom end of the water storage tank 2, a sealing plug 22 is detachably arranged in the drain pipe 21, and all water in the water storage tank 2 is prevented from being discharged in a failure mode, so that the device is convenient to arrange and maintain.
Further, rainwater collection bucket 15 is made by stainless steel material, rainwater collection bucket 15 bottom is leaks hopper-shaped setting, drainage tube 16 top can be dismantled and is provided with filter screen panel 23, conveniently carries out filtration treatment to the rainwater of gathering, avoids blockking up equipment pipeline, makes things convenient for the use of equipment.
Further, rainwater is gathered and is fought 15 outside cover and is equipped with connecting sleeve 24, connecting sleeve 24 and the 1 top threaded connection of the equipment jar body, the fixed spacing collar 25 that is provided with in the 1 top of the equipment jar body, connecting sleeve 24 bottom and spacing collar match the setting, and through threaded connection's mode installation connecting sleeve 24, make things convenient for the installation and the dismantlement of rainwater collection fill 15, make things convenient for the use of equipment.
The implementation scenario is specifically as follows: when the rainwater collection bucket 15 is installed, the connecting sleeve 24 is placed at the top of the equipment tank body 1, the connecting sleeve 24 is rotated, the bottom end of the connecting sleeve 24 is in contact with the limiting ring 25, the connecting sleeve 24 is installed at the top of the equipment tank body 1 in a threaded mode, the interior of the remaining connecting sleeve 24 of the rainwater collection bucket 15 is placed, the drainage tube 16 is correspondingly inserted into the top end of the water inlet tube 3, the connecting sleeve 24 is installed in a threaded connection mode, the limiting ring 25 facilitates determining the installation state of the connecting sleeve 24, the rainwater collection bucket 15 is convenient to install and detach, and the equipment is convenient to use.
The working principle is as follows:
referring to the attached drawings 1-5, when the device is used, water is pre-selected and stored in the water storage tank 2, the water pipe 10 is adjusted to discharge redundant water in the water storage tank 2, so that the water in the water storage tank 2 is just in a saturated state, the liquid level is at the bottom ends of the water inlet pipe 3 and the detection pipe 4, rainwater is collected by the rainwater collection hopper 15 and enters the device from the water inlet pipe 3, the liquid level in the detection pipe 4 rises by utilizing the principle of a communicating device, the floating block 5 is driven to float upwards, the lifting detection rod 6 is driven to rise upwards, the detection camera 8 carries out video detection on the rising measurement ruler strip 7, detection data are obtained, liquid level fluctuation caused by rainwater falling during rainwater collection is avoided, the detection stability is prevented from being influenced, and the;
referring to the attached drawings 1 and 6-7, when the rainwater collection hopper 15 is installed, the connecting sleeve 24 is firstly placed at the top of the equipment tank body 1, the connecting sleeve 24 is rotated, the bottom end of the connecting sleeve 24 is in contact with the limiting ring 25, the connecting sleeve 24 is installed at the top of the equipment tank body 1 in a threaded mode, then the rainwater collection hopper 15 is placed inside the remaining connecting sleeve 24, the drainage tube 16 is correspondingly inserted into the top end of the water inlet tube 3, and the rainwater collection hopper 15 is convenient to install and disassemble and is convenient to use.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (8)
1. The utility model provides an intelligence rainfall check out test set based on computer vision, includes the equipment jar body (1), its characterized in that: a water storage tank (2) is fixedly arranged at the bottom of the equipment tank body (1), a water inlet pipe (3) is fixedly arranged in the middle of the top end of the water storage tank (2), a detection pipe (4) is fixedly arranged on one side of the top end of the water storage tank (2), a floating block (5) is movably arranged in the detection pipe (4), a lifting detection rod (6) is fixedly arranged on the top of the floating block (5), a measurement ruler strip (7) is arranged on one side of the detection pipe (4), the lifting detection rod (6) is fixedly connected with the measurement ruler strip (7), a detection camera (8) is fixedly arranged on the inner wall of the equipment tank body (1), and a receiving end of the detection camera (8) is arranged corresponding to the measurement ruler strip (7);
the water storage tank is characterized in that a fixed pipe (9) is fixedly arranged on the other side of the top end of the water storage tank (2), an adjusting water outlet pipe (10) is vertically and fixedly arranged in the middle of the fixed pipe (9), the adjusting water outlet pipe (10) is horizontally arranged in a collinear manner with the top end in the water storage tank (2), an installation plate (11) is fixedly arranged on the top end of the fixed pipe (9), an adjusting threaded rod (12) is fixedly arranged between the surface of the installation plate (11) and the surface of the adjusting water outlet pipe (10), a movable frame (13) is arranged in the middle of the adjusting threaded rod (12) in a threaded connection manner, an adjusting plug (14) is movably arranged in the fixed pipe (9), and the movable frame (13) penetrates through;
the rainwater collection bucket (15) is arranged at the top of the equipment tank body (1), a water conduit (16) is fixedly arranged at the bottom end of the rainwater collection bucket (15), and the water conduit (16) is sleeved with the top end of the water inlet pipe (3).
2. The intelligent computer vision-based rainfall detection device of claim 1 wherein: the water inlet pipe (3) and the detection pipe (4) are both arranged in a vertical state, the inner diameters of the water inlet pipe and the detection pipe are the same, the rear side of the top end of the detection pipe (4) is fixedly connected with an overflow pipe (17), and the overflow pipe (17) penetrates through the equipment tank body (1).
3. The intelligent computer vision-based rainfall detection device of claim 1 wherein: the floating block (5) is made of resin bubbles, the measuring ruler strip (7) is made of a plastic sheet, and scale marks are drawn on the surface of the measuring ruler strip.
4. The intelligent computer vision-based rainfall detection device of claim 1 wherein: the lifting detection rod (6) is U-shaped, a limiting support (18) is fixedly arranged at the top end of the detection tube (4), and the lifting detection rod (6) penetrates through the middle of the limiting support (18).
5. The intelligent computer vision-based rainfall detection device of claim 1 wherein: the device jar body (1) one side is fixed and is provided with operation recess (19), mounting panel (11) set up in operation recess (19) bottom, adjusting screw rod (12) top is fixed and is provided with knob (20), knob (20) set up inside operation recess (19).
6. The intelligent computer vision-based rainfall detection device of claim 1 wherein: a drain pipe (21) is fixedly arranged on one side of the bottom end of the water storage tank (2), and a sealing plug (22) is detachably arranged in the drain pipe (21).
7. The intelligent computer vision-based rainfall detection device of claim 1 wherein: the rainwater is gathered and is fought (15) by stainless steel material and make, rainwater is gathered fill (15) bottom and is hopper-shaped setting, drainage tube (16) top can be dismantled and be provided with filter screen panel (23).
8. The intelligent computer vision-based rainfall detection device of claim 1 wherein: rainwater is gathered fill (15) outside cover and is equipped with connecting sleeve (24), connecting sleeve (24) and the equipment jar body (1) top threaded connection, the fixed spacing collar (25) that is provided with in the equipment jar body (1) top, connecting sleeve (24) bottom and spacing collar match the setting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010026419.XA CN111175853A (en) | 2020-01-10 | 2020-01-10 | Intelligent rainfall detection equipment based on computer vision |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010026419.XA CN111175853A (en) | 2020-01-10 | 2020-01-10 | Intelligent rainfall detection equipment based on computer vision |
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| CN202010026419.XA Pending CN111175853A (en) | 2020-01-10 | 2020-01-10 | Intelligent rainfall detection equipment based on computer vision |
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Citations (8)
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| CN1651937A (en) * | 2005-03-30 | 2005-08-10 | 中国科学院力学研究所 | Method and apparatus for testing rain quantity |
| CN102253432A (en) * | 2011-06-27 | 2011-11-23 | 南京信息工程大学 | SCM (single chip microcomputer) based ultrasonic rainfall measurement device |
| CN103323890A (en) * | 2013-06-17 | 2013-09-25 | 成都众山科技有限公司 | Rainfall monitoring device |
| CN104654573A (en) * | 2015-02-09 | 2015-05-27 | 大连理工大学 | Hot-melt-type solidification latent heat pump capable of recycling waste heat |
| CN205103424U (en) * | 2015-10-24 | 2016-03-23 | 湖南北斗星空检测科技有限公司 | Intelligence storage capacitive gate formula hyetometer |
| CN108828693A (en) * | 2018-06-27 | 2018-11-16 | 郑州赫恩电子信息技术有限公司 | A kind of intelligent testing apparatus for precipitation rain fall based on computer vision |
| CN208639113U (en) * | 2018-08-10 | 2019-03-26 | 季培培 | A kind of water and soil conservation flowerpot adjusted convenient for height of water level |
| CN110513867A (en) * | 2019-09-20 | 2019-11-29 | 北京民利储能技术有限公司 | A kind of hot-water supply device of low ebb electric heating energy |
-
2020
- 2020-01-10 CN CN202010026419.XA patent/CN111175853A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1651937A (en) * | 2005-03-30 | 2005-08-10 | 中国科学院力学研究所 | Method and apparatus for testing rain quantity |
| CN102253432A (en) * | 2011-06-27 | 2011-11-23 | 南京信息工程大学 | SCM (single chip microcomputer) based ultrasonic rainfall measurement device |
| CN103323890A (en) * | 2013-06-17 | 2013-09-25 | 成都众山科技有限公司 | Rainfall monitoring device |
| CN104654573A (en) * | 2015-02-09 | 2015-05-27 | 大连理工大学 | Hot-melt-type solidification latent heat pump capable of recycling waste heat |
| CN205103424U (en) * | 2015-10-24 | 2016-03-23 | 湖南北斗星空检测科技有限公司 | Intelligence storage capacitive gate formula hyetometer |
| CN108828693A (en) * | 2018-06-27 | 2018-11-16 | 郑州赫恩电子信息技术有限公司 | A kind of intelligent testing apparatus for precipitation rain fall based on computer vision |
| CN208639113U (en) * | 2018-08-10 | 2019-03-26 | 季培培 | A kind of water and soil conservation flowerpot adjusted convenient for height of water level |
| CN110513867A (en) * | 2019-09-20 | 2019-11-29 | 北京民利储能技术有限公司 | A kind of hot-water supply device of low ebb electric heating energy |
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Application publication date: 20200519 |
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