CN112212933B - Wet water meter - Google Patents
Wet water meter Download PDFInfo
- Publication number
- CN112212933B CN112212933B CN202010943972.XA CN202010943972A CN112212933B CN 112212933 B CN112212933 B CN 112212933B CN 202010943972 A CN202010943972 A CN 202010943972A CN 112212933 B CN112212933 B CN 112212933B
- Authority
- CN
- China
- Prior art keywords
- water
- cavity
- rectifier
- flow
- counter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 171
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 239000011521 glass Substances 0.000 claims description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 description 13
- 239000008399 tap water Substances 0.000 description 9
- 235000020679 tap water Nutrition 0.000 description 9
- 238000000034 method Methods 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details 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
- G01F15/14—Casings, e.g. of special material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details 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
- G01F15/07—Integration to give total flow, e.g. using mechanically-operated integrating mechanism
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a wet water meter, comprising: the watch case is provided with a first cavity and a second cavity, the watch case is provided with a water inlet and a water outlet, the water inlet and the water outlet are communicated with the first cavity, and the second cavity is communicated with the first cavity; the impeller is arranged in the first cavity and can be driven to rotate by water flow; the counter is arranged in the second cavity, and the impeller is connected with the counter and can drive the counter; and the automatic exhaust device is connected with the watchcase and is communicated with the second cavity, and can be started to exhaust the gas in the second cavity when the liquid level of the water body in the second cavity is lower than a set value. The invention can ensure that the counter is always immersed by water to ensure the counting accuracy of the water meter.
Description
Technical Field
The invention relates to the technical field of water meters, in particular to a wet water meter with an automatic exhaust function.
Background
In the existing wet water meter, a counter of the water meter is immersed in water, the water pressure is born by a glass of the water meter, and a sensor and the counter are in gear linkage. The requirement of the wet water meter is that the counter is immersed in water, which is determined by the characteristics of the wet water meter itself. The prior wet water meter is characterized in that the counter is formed into a relatively sealed cavity through complex design. When the water meter is produced and assembled, water is filled in the cavity for installing the counter in advance, and after the water is filled, the water is sealed by using the surface glass, the sealing gasket, the cover and the like, so that the water is not lost, and the purpose that the counter is always immersed in the water is achieved. The water meter produced in the method can flow off in a short time in the subsequent testing, packaging, transporting, storing, installing and using processes, and the water can not be replenished after the water is lost. In addition, in actual production operation of the wet water meter, a part of air which cannot be discharged is reserved in most of the counter cavities, and the residual air can accelerate the loss of pre-sealed water in the counter, and particularly, the loss of sealed water is particularly remarkable when the large-caliber wet water meter has large-flow (such as Q3) water. The result is that only a small amount of water is stored in the counter in a short time, and the counter is not immersed enough, so that the counting of the water meter is inaccurate.
Disclosure of Invention
The invention provides a wet water meter, which can enable a counter to be always immersed by water to ensure the counting accuracy of the water meter.
In order to solve the above technical problems, the present invention provides a wet water meter, comprising:
The watch case is provided with a first cavity and a second cavity, the watch case is provided with a water inlet and a water outlet, the water inlet and the water outlet are communicated with the first cavity, and the second cavity is communicated with the first cavity;
the impeller is arranged in the first cavity and can be driven to rotate by water flow;
the counter is arranged in the second cavity, and the impeller is connected with the counter and can drive the counter;
and the automatic exhaust device is connected with the watchcase and is communicated with the second cavity, and can be started to exhaust the gas in the second cavity when the liquid level of the water body in the second cavity is lower than a set value.
Preferably, the second cavity is located above the first cavity, and the automatic exhaust device is located above the second cavity.
As the preference of above-mentioned technical scheme, automatic exhaust device is automatic exhaust valve, automatic exhaust valve includes valve casing, body, link gear and exhaust subassembly, the inside accommodation space that has of valve casing, be provided with air inlet and gas outlet on the valve casing, air inlet and gas outlet with accommodation space intercommunication, exhaust subassembly set up in gas outlet department is used for opening or closing the gas outlet, the body pass through link gear with exhaust subassembly is connected, the body can drive through link gear exhaust subassembly activity so that the gas outlet is in open or closed state.
Preferably, in the above technical solution, a water flow rectifier is disposed in the first cavity, and a water flow channel is formed on the water flow rectifier, and water flowing into the first cavity from the water inlet can flow through the water flow channel of the water flow rectifier and be discharged from the water outlet.
As the preferable of the above technical scheme, a filter screen is disposed at the inlet of the water flow rectifier.
Preferably, the water flow rectifier comprises a first rectifier and a second rectifier, the first rectifier is located near the water inlet, the second rectifier is located near the water outlet, and the impeller is located between the first rectifier and the second rectifier.
As a preferable aspect of the above-mentioned technical solution, a flow rate adjusting mechanism is provided in a water flow channel of the water flow rectifier.
Preferably, the flow rate adjusting mechanism includes a sheet-like body rotatably disposed in the water flow passage of the water flow rectifier.
As the preferable of the above technical scheme, the watch case comprises an upper case body and a lower case body, wherein the upper case body is connected with the lower case body, a sealing ring is arranged at the joint of the upper case body and the lower case body, the upper case body is provided with a second cavity, and the lower case body is provided with a first cavity.
As the optimization of the technical scheme, the top opening of the upper shell is provided with the watch glass, the upper shell is also provided with the copper cover, and the copper cover is pressed on the watch glass so that the watch glass and the upper shell are positioned relatively.
The invention provides a wet water meter, wherein a first cavity is arranged in a meter shell, the first cavity is provided with a water inlet and a water outlet, the first cavity, the water inlet and the water outlet form a water flow passage, an impeller is arranged in the first cavity, a second cavity is arranged in the meter shell, a counter for measuring the water flow is arranged in the second cavity, the water flow can drive the impeller to rotate from the first cavity, the impeller can drive the counter to measure the water flow, when air enters the second cavity from a water meter gap, an automatic exhaust device is started to exhaust the air entering the second cavity, the counter is ensured to be always immersed in a water body under a working state, and the measuring accuracy of the water meter can be ensured.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
Drawings
FIG. 1 is a schematic diagram of a wet water meter according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an automatic exhaust device in an embodiment of the present invention.
In the figure: 10. a lower housing; 20. a flow rate adjusting mechanism; 30. a filter screen; 40. a rotating shaft; 50. a first rectifier; 60. an impeller; 70. an upper housing; 80. a copper cover; 90. a watch glass; 100. an automatic exhaust device; 200. a counter; 300. a central spindle; 400. a second rectifier; 500. a watch case; 600. a water flow channel; 101. a first cavity; 102. a water inlet; 103. a water outlet; 104. a second cavity; 110. a valve housing; 120. an air inlet; 130. a floating body; 140. an accommodating space; 150. a linkage mechanism; 160. an exhaust assembly; 170. and an air outlet.
Detailed Description
In order to make the objects, features and advantages of the present invention more comprehensible, the technical solutions according to the embodiments of the present invention will be clearly described in the following with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 and 2, an embodiment of the present invention provides a wet water meter, including:
the watch case 500 is provided with a first cavity 101 and a second cavity 104, the watch case is provided with a water inlet 102 and a water outlet 103, the water inlet 102 and the water outlet 103 are communicated with the first cavity 101, and the second cavity 104 is communicated with the first cavity 101;
The impeller 60 is arranged in the first cavity 101, and the impeller 60 can be driven to rotate by water flow;
A counter 200 disposed in the second chamber 104, the impeller 60 being connected to the counter 200 and being capable of driving the counter 200;
The automatic exhaust device 100 is connected with the watchcase 500 and is communicated with the second cavity 104, and when the liquid level of the water body in the second cavity 104 is lower than a set value, the automatic exhaust device 100 can be started to exhaust the gas in the second cavity 104.
According to the wet water meter of the embodiment, the first cavity 101 is arranged in the meter case 500, the first cavity 101 is provided with the water inlet 102 and the water outlet 103, the first cavity 101, the water inlet 102 and the water outlet 103 form a water flow passage, the first cavity 101 is internally provided with the impeller, the meter case 500 is internally provided with the second cavity 104, the second cavity 104 is internally provided with the counter 200 for measuring the water flow, the water flow can drive the impeller 60 to rotate from the first cavity 101, the impeller 60 can drive the counter 200 to measure the water flow, and when air enters the second cavity 104 from a water meter gap, the automatic exhaust device 100 is started to discharge the air entering the second cavity 104, so that the counter 200 is ensured to be always immersed in a water body in a working state, and the measuring accuracy of the water meter can be improved.
In addition, in the present embodiment, the automatic exhaust device 100 can be turned on to exhaust the gas in the second cavity 104 when the liquid level of the water in the second cavity 104 is lower than the set value, and the automatic exhaust device 100 can be turned off when the liquid level of the water in the second cavity 104 is higher than the set value.
The automatic exhaust device 100 in this embodiment can automatically open and close according to the liquid level in the second cavity 104, so as to realize automatic exhaust, timely and accurate work, and further ensure that the counter 200 is immersed in the water body.
Specifically, in the wet water meter of this embodiment, in an operating state, tap water enters from the water inlet 102, flows through the first cavity 101 and then is discharged from the water outlet 103, and the tap water can enter into the second cavity 104 through the first cavity 101 so that the tap water submerges the counter 200 in the water body to ensure the accuracy of metering the counter 200, but in the prior art, in order to ensure the water volume entering into the second cavity 104 in the operating state so that the counter 200 can be submerged in the water body, the second cavity 104 needs to be filled with the water body in the production process, the wet water meter fills the second cavity 104 in the production process in order to reduce the air volume in the second cavity 104, and the second cavity 104 needs to be sealed after the second cavity 104 is filled in the production process, so as to prevent the second cavity 104 from leaking in the production and transportation process, the water filling working position needs to be set in the production process, one worker, one minute for filling one counter is about 0.05 kL of water per counter, and about 60 kL of water is consumed in the production process, and no more than about 3.931 is consumed in the current working position for one hundred days, and the water is not consumed in the production process is consumed for about 0.40 tons of water consumption and no more than about 0.931 days.
The adoption of the automatic exhaust device 100 in the embodiment can cancel the water filling process in the production of the wet water meter in the production and processing process of the wet water meter, save labor cost, equipment investment, production sites, simplify production routes, save operation time, save a large amount of production water and energy, and have very important market application prospects.
In addition, the counter 200 in the present embodiment is a mechanical counter driven by a gear, the impeller 60 is mounted on the central rotating shaft 300, and the impeller 60 drives the counter 200 to measure the flow through the central rotating shaft 300.
In a further implementation manner of this embodiment, the second cavity 104 is located above the first cavity 101, and the automatic exhaust device 100 is located above the second cavity 104.
The arrangement of the first chamber 101, the second chamber 104, and the automatic exhaust device 100 in this embodiment can ensure smooth exhaust of the gas.
In a further implementation manner of this embodiment, the automatic exhaust device 100 is an automatic exhaust valve, the automatic exhaust valve includes a valve housing 110, a floating body 130, a linkage mechanism 150 and an exhaust component 160, a containing space 140 is provided in the valve housing 110, an air inlet 120 and an air outlet 170 are provided on the valve housing 110, the air inlet 120 and the air outlet 170 are communicated with the containing space 140, the exhaust component 160 is provided at the air outlet 170 for opening or closing the air outlet 170, the floating body 130 is connected with the exhaust component 160 through the linkage mechanism 150, and the floating body 130 can drive the exhaust component 160 to move through the linkage mechanism 150 so that the air outlet 170 is in an open or closed state.
The working principle of the automatic exhaust device 100 in this embodiment is as follows: the second cavity 104 enters the accommodating space 140 through the air inlet 120, the liquid level of the water body in the second cavity 104 is consistent with the liquid level in the accommodating space 140, when the liquid level is lowered, the floating body 130 is lowered, the air exhaust assembly 160 is driven by the floating body 130 through the linkage mechanism 150 to open the air outlet 170, air is discharged, when the liquid level is raised, the floating body 130 is raised, and when the air level is raised, the air exhaust assembly 160 is driven by the floating body 130 through the linkage mechanism 150 to close the air outlet 170.
The automatic exhaust apparatus 100 of the present embodiment has a simple structure and works accurately, and in addition, the present embodiment can adjust and control the liquid level of the opening and closing of the exhaust assembly 160 by setting the position of the automatic exhaust apparatus 100.
In a further implementation manner of this embodiment, a water flow rectifier is disposed in the first cavity 101, and a water flow channel is formed on the water flow rectifier, so that water flowing into the water inlet 102 can flow through the water flow channel of the water flow rectifier and be discharged from the water outlet 103.
In this embodiment, the water flow rectifier can rectify the tap water flow entering from the water inlet 102 so that the water flow can be suitably used for metering to improve accuracy of water meter metering.
In a further implementation of this embodiment, the inlet of the water flow rectifier is provided with a filter screen 30.
In this embodiment, a filter screen 30 is disposed at the inlet of the water flow rectifier to filter the tap water entering the water flow rectifier, so as to prevent impurities from entering the second cavity 104 to affect the use of the counter 200.
In a further implementation of this embodiment, the water flow rectifier includes a first rectifier 50 and a second rectifier 400, the first rectifier 50 being located near the water inlet 102, the second rectifier 400 being located near the water outlet 103, the impeller 60 being located between the first rectifier 50 and the second rectifier 400.
The first rectifier 50 in this embodiment rectifies the tap water entering the first chamber 101 a first time to make the incoming tap water suitable for metering, after passing through the impeller 60, the tap water is rectified a second time and then discharged through the outlet 103.
In a further implementation of this embodiment, the flow adjustment mechanism 20 is disposed in the flow channel 600 of the flow straightener.
The flow adjustment mechanism 20 in this embodiment can adjust the flow of tap water into the water flow channel 600, which can be used to adjust to compensate for errors when metering errors occur.
In a further implementation of this embodiment, the flow adjustment mechanism 20 includes a plate rotatably disposed in the water flow channel 600 of the water flow rectifier.
The flow rate adjustment mechanism 20 in the present embodiment is simple in structure and effective in flow rate adjustment in time.
Specifically, the sheet-like body in the present embodiment is rotatably connected to the water flow rectifier through the rotation shaft 40, and the flow rate is controlled mainly by adjusting the flow cross section of the water flow channel 600, when the sheet-like body is in a vertical state, the flow rate of the water flow channel 600 is in a maximum state, and when the sheet-like body is rotated by a certain angle, the flow cross section of the water flow channel 600 is reduced.
In a further implementation of this example, the watch case 500 comprises an upper case 70 and a lower case 10, the upper case 70 and the lower case 10 are connected, a sealing ring is provided at the connection of the upper case 70 and the lower case 10, the upper case 70 is provided with a second cavity 104, and the lower case 10 is provided with a first cavity 101.
In a further implementation manner of this embodiment, the top opening of the upper casing 70 is provided with a watch glass 90, and the upper casing 70 is further provided with a copper cover 80, where the copper cover 80 is pressed on the watch glass 90 so that the watch glass 90 is located opposite to the upper casing 70.
The watch glass 90 in this embodiment can facilitate flow checking of the counter 200, and in addition, the copper cover 80 can protect the watch glass 90, and the copper cover 80 can also have rust resistance.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A wet water meter, comprising: the watch case is provided with a first cavity and a second cavity, the watch case is provided with a water inlet and a water outlet, the water inlet and the water outlet are communicated with the first cavity, and the second cavity is communicated with the first cavity; the impeller is arranged in the first cavity and can be driven to rotate by water flow; the counter is arranged in the second cavity, and the impeller is connected with the counter and can drive the counter; the automatic exhaust device is connected with the watchcase and is communicated with the second cavity, when the liquid level of the water body in the second cavity is lower than a set value, the automatic exhaust device can be opened to exhaust gas in the second cavity, the second cavity is located above the first cavity, the automatic exhaust device is located above the second cavity, the automatic exhaust device is an automatic exhaust valve, the automatic exhaust valve comprises a valve shell, a floating body, a linkage mechanism and an exhaust assembly, a containing space is arranged in the valve shell, an air inlet and an air outlet are arranged on the valve shell, the air inlet and the air outlet are communicated with the containing space, the exhaust assembly is arranged at the air outlet and used for opening or closing the air outlet, the floating body is connected with the exhaust assembly through the linkage mechanism, and the floating body can drive the exhaust assembly to move so that the air outlet is in an opened or closed state through the linkage mechanism.
2. The wet water meter of claim 1, wherein a water flow rectifier is disposed in the first chamber, the water flow rectifier having a water flow passage thereon, water flowing from the water inlet being capable of flowing through the water flow passage of the water flow rectifier to be discharged from the water outlet.
3. The wet water meter of claim 2, wherein a filter screen is provided at the inlet of the flow rectifier.
4. A wet water meter as defined in claim 3, wherein the flow rectifier includes a first rectifier and a second rectifier, the first rectifier being positioned proximate the water inlet, the second rectifier being positioned proximate the water outlet, the impeller being positioned between the first rectifier and the second rectifier.
5. The wet water meter of claim 4, wherein a flow adjustment mechanism is disposed in the flow path of the flow rectifier.
6. The wet water meter of claim 5, wherein the flow adjustment mechanism comprises a plate rotatably disposed in the water flow passage of the water flow rectifier.
7. The wet water meter of claim 6, wherein the meter case comprises an upper housing and a lower housing, the upper housing and the lower housing are connected and a sealing ring is provided at a connection of the upper housing and the lower housing, the upper housing is provided with a second cavity, and the lower housing is provided with a first cavity.
8. The wet water meter of claim 7, wherein a top opening of the upper housing is provided with a glass, and a copper cover is further provided on the upper housing, and the copper cover is pressed on the glass so that the glass and the upper housing are positioned relatively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010943972.XA CN112212933B (en) | 2020-09-10 | 2020-09-10 | Wet water meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010943972.XA CN112212933B (en) | 2020-09-10 | 2020-09-10 | Wet water meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112212933A CN112212933A (en) | 2021-01-12 |
| CN112212933B true CN112212933B (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010943972.XA Active CN112212933B (en) | 2020-09-10 | 2020-09-10 | Wet water meter |
Country Status (1)
| Country | Link |
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| CN (1) | CN112212933B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112991625B (en) * | 2021-05-19 | 2021-07-27 | 天津赛恩能源技术股份有限公司 | Matrix type valve control water meter system and valve control method thereof |
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| JPH0843153A (en) * | 1994-07-27 | 1996-02-16 | Toyo Keiki Kk | City water meter |
| CN1257144A (en) * | 1998-12-13 | 2000-06-21 | 伯尔梅特有限公司 | Water controlling equipment |
| JP2000171272A (en) * | 1998-12-04 | 2000-06-23 | Aichi Tokei Denki Co Ltd | Dry city water meter |
| CN101949719A (en) * | 2010-07-07 | 2011-01-19 | 宁波东海仪表水道有限公司 | Water-gas separation device |
| CN204881741U (en) * | 2015-05-12 | 2015-12-16 | 吉林大学 | Device and measurement system cool down |
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| CN108534859A (en) * | 2018-06-06 | 2018-09-14 | 深圳市捷先数码科技股份有限公司 | Highly sensitive photoelectric direct reading remote transmission water meter |
| CN209055160U (en) * | 2018-11-29 | 2019-07-02 | 宁波水立方仪表科技有限公司 | A kind of dry-type structure of water meter of diamagnetic interference |
| CN214224247U (en) * | 2020-09-10 | 2021-09-17 | 宁波水表(集团)股份有限公司 | Wet water meter |
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| KR101382277B1 (en) * | 2012-05-25 | 2014-04-07 | 박재삼 | A electronic gas meter and a remote transmission device for measuring flow of a gas meter and the method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4306454A (en) * | 1978-11-03 | 1981-12-22 | A/S N. Foss Electric | Method and an apparatus for metering a liquid flow |
| JPH0518797A (en) * | 1991-07-09 | 1993-01-26 | Ricoh Elemex Corp | Aqueduct meter for high temperature water |
| JPH0843153A (en) * | 1994-07-27 | 1996-02-16 | Toyo Keiki Kk | City water meter |
| JP2000171272A (en) * | 1998-12-04 | 2000-06-23 | Aichi Tokei Denki Co Ltd | Dry city water meter |
| CN1257144A (en) * | 1998-12-13 | 2000-06-21 | 伯尔梅特有限公司 | Water controlling equipment |
| CN101949719A (en) * | 2010-07-07 | 2011-01-19 | 宁波东海仪表水道有限公司 | Water-gas separation device |
| CN204881741U (en) * | 2015-05-12 | 2015-12-16 | 吉林大学 | Device and measurement system cool down |
| CN106352932A (en) * | 2016-11-01 | 2017-01-25 | 张家港海纳德智能科技有限公司 | Liquid measurement device with backflow mechanism |
| CN108534859A (en) * | 2018-06-06 | 2018-09-14 | 深圳市捷先数码科技股份有限公司 | Highly sensitive photoelectric direct reading remote transmission water meter |
| CN209055160U (en) * | 2018-11-29 | 2019-07-02 | 宁波水立方仪表科技有限公司 | A kind of dry-type structure of water meter of diamagnetic interference |
| CN214224247U (en) * | 2020-09-10 | 2021-09-17 | 宁波水表(集团)股份有限公司 | Wet water meter |
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| Publication number | Publication date |
|---|---|
| CN112212933A (en) | 2021-01-12 |
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