CN114674398A - Water level measuring device for water conservancy and hydropower - Google Patents
Water level measuring device for water conservancy and hydropower Download PDFInfo
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- CN114674398A CN114674398A CN202210461511.8A CN202210461511A CN114674398A CN 114674398 A CN114674398 A CN 114674398A CN 202210461511 A CN202210461511 A CN 202210461511A CN 114674398 A CN114674398 A CN 114674398A
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- measuring device
- water level
- water
- steel cable
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
- G01F23/40—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using bands or wires as transmission elements
- G01F23/42—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using bands or wires as transmission elements using mechanically actuated indicating means
Abstract
The invention provides a water level measuring device for water conservancy and hydropower, which comprises a measuring device body, wherein the measuring device body comprises a support and a floating mechanism, the top end of the support is provided with an upright post, the bottom end of the rear part of the support is provided with a returning mechanism, the top end of the returning mechanism is provided with a rotating belt, one side of the returning mechanism is provided with a returning spring, one side of a pull rod is fixedly connected with one end of the returning spring, two ends of the rotating belt are respectively provided with a rotating shaft, the water level height of the position of the floating mechanism can be displayed through a linkage component and the rotating belt, and measured data can be read through a scale mark corresponding to an indicating plate, so that the data reading is simpler and more convenient, and a buffer spring is arranged in a counterweight ball, so that when water waves fluctuate on the floating plate, the buffer spring is used for compensating, so as to ensure that the top data reading can be kept stable, will not be affected by the transient fluctuations.
Description
Technical Field
The invention relates to the field of water conservancy and hydropower, in particular to a water level measuring device for water conservancy and hydropower.
Background
Carry out the measuring in-process to the water level, will use professional water level measuring apparatu, float on the surface of water through the buoy, the metal member who recycles the top instructs the water level, when observing, need carry out direct observation to the instruction scale mark that attaches the table top, therefore for the convenience of observation, water level measuring device can install in the position that is close to the bank, and comparatively hard when observing, and during water level measuring, if the surface of water produces the stormy waves, just need only be consolidating the buoy, and the stormy waves can make the whole emergence of buoy stir, just increased the degree of difficulty of observation once more after the buoy produces to stir, and easy production error, lead to the measuring precision not enough.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a water level measuring device for water conservancy and hydropower so as to solve the problems in the background technology.
In order to achieve the purpose, the invention is realized by the following technical scheme: a water level measuring device for water conservancy and hydropower comprises a measuring device body, wherein the measuring device body comprises a bracket and a floating mechanism, the top end of the bracket is provided with an upright post, the bottom end of the rear part of the bracket is provided with a back-up mechanism, the top end of the back-adjusting mechanism is provided with a rotating belt, one side of the back-adjusting mechanism is provided with a back-adjusting spring, pull rods are arranged on two sides of the rotating belt, one side of each pull rod is fixedly connected with one end of each adjusting spring, the two ends of the rotating belt are both provided with rotating shafts, the surface of the rotating belt is provided with scale marks, the top of the rear end of the bracket is provided with a first supporting rod, an indicating plate is arranged in the middle of the first supporting rod, a transmission gear is sleeved on the surface of the rotating shaft, the front end of the support is provided with a linkage assembly, the bottom end of the linkage assembly is connected with a first steel cable, and the bottom end of the first steel cable is provided with a floating mechanism.
Further, the relocation mechanism includes counter weight ball and kickboard, the top of counter weight ball and the bottom fixed connection of first cable wire, the inside of counter weight ball is provided with the dashpot, the internally mounted of dashpot has buffer spring, buffer spring's bottom is connected with the limiting plate, the kickboard is installed under the limiting plate.
Further, counterweight ball and the whole alloy steel material that all adopts of limiting plate, the limiting plate is the disc structure, and the side of limiting plate laminates with the inner wall of dashpot mutually, the tie point of first cable wire and counterweight ball is in same straight line with the axis of dashpot.
Furthermore, the weight of the counterweight ball is greater than that of the floating plate, and the elastic force of the adjusting spring in the ultimate stretching state is less than the sum of the weights of the counterweight ball and the floating plate.
Furthermore, the linkage assembly comprises a rotating shaft and a guide post, the first steel cable bypasses from the surface of the guide post, a lantern ring is arranged at the front end of the support, the steel cable penetrates through the interior of the lantern ring, and two ends of the rotating shaft are embedded on the inner side of the upright post through bearings.
Furthermore, one end of the first steel cable is fixedly connected with the end of the rotating shaft, two transmission gears are mounted on the surface of each rotating shaft, and the rotating belt rotates by pulling the rotating shaft and the transmission gears through the first steel cable.
Furthermore, the middle of the floating plate is fixedly connected with the bottom end of the limiting plate through a second steel cable, and a plurality of auxiliary pull ropes are arranged on the side edge of the floating plate.
Further, the floating plate and the counterweight balls are provided with two groups, and the floating plate floats on the water surface to be measured through the bottom surface.
Furthermore, the surface of the adjusting back mechanism and the surface of the support are located on the same horizontal plane, the adjusting back mechanism is connected with the adjusting back spring through a second supporting rod, and a fixing block is installed at the rear end of the support.
Furthermore, the two groups of back-adjusting springs are arranged, the rear ends of the back-adjusting springs are symmetrically arranged on the two sides of the second supporting rod, and the rotating belt is in a reverse rotating state when being pulled by the first steel cable through the pulling of the back-adjusting springs.
The invention has the beneficial effects that: the water level measuring device for water conservancy and hydropower comprises a measuring device body, wherein the measuring device body comprises a support, a floating mechanism, a counterweight ball, a linkage assembly, a back-adjusting mechanism, a rotating belt, a scale mark, a pull rod, a fixed block, an upright post, a rotating shaft, a first supporting rod, an indicating plate, a transmission gear, a bearing, a second supporting rod, a back-adjusting spring, a guide post, a lantern ring, a first steel cable, a floating plate, an auxiliary pull rope, a second steel cable, a limiting plate, a buffer groove and a buffer spring.
1. This water level measurement device for water conservancy water and electricity sets up the position of floating machanism keeping away from the bank, can demonstrate the position water level height at floating machanism place through linkage subassembly and rotation area to can read measured data through the position of the scale mark that reads the indicator panel and correspond, make data reading more simple and convenient.
2. This water level measuring device for water conservancy water and electricity is through the weight relation between the elastic coefficient of control callback spring and counterweight ball, the kickboard, can control the counterweight ball and suspend aloft all the time, and the kickboard floats on the surface of water, and then makes the relocation mechanism keep approximate vertically state, avoids taking place the removal on a large scale and leads to measuring error.
3. This water conservancy water and electricity water level measuring device has buffer spring at the internally mounted of counter weight ball to can wave about unrestrained the production of water to the kickboard and make, utilize buffer spring to compensate, can keep stable with guaranteeing that top data reads, can not produce the change immediately along with instantaneous fluctuation.
Drawings
FIG. 1 is a schematic structural view showing the external form of a water level measuring device for water conservancy and hydropower according to the present invention;
FIG. 2 is a schematic structural view of a bracket part of a water level measuring device for water conservancy and hydropower according to the present invention;
FIG. 3 is a schematic view of the linkage assembly of the water level measuring device for water conservancy and hydropower according to the present invention;
FIG. 4 is a cross-sectional view of a floating mechanism portion of a water level measuring device for water conservancy and hydropower according to the present invention;
in the figure: 1. a support; 2. a floating mechanism; 3. a counterweight ball; 4. a linkage assembly; 5. a callback mechanism; 6. a rotating belt; 7. scale marks; 8. a pull rod; 9. a fixed block; 10. a column; 11. a rotating shaft; 12. a first support bar; 13. an indicator panel; 14. a transmission gear; 15. a bearing; 16. a second support bar; 17. the spring is adjusted back; 18. a guide post; 19. a collar; 20. a first wire rope; 21. a floating plate; 22. an auxiliary pull rope; 23. a second wire rope; 24. a limiting plate; 25. a buffer tank; 26. a buffer spring.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to fig. 1 to 4, the present invention provides a technical solution: the utility model provides a water level measuring device for water conservancy and hydropower, includes the measuring device body, the measuring device body includes support 1 and relocation mechanism 2, stand 10 is installed on the top of support 1, the bottom at the rear portion of support 1 is provided with callback mechanism 5, the top of callback mechanism 5 is provided with rolling band 6, callback spring 17 is installed to one side of callback mechanism 5, pull rod 8 is installed to the both sides of rolling band 6, one side of pull rod 8 and callback spring 17's one end fixed connection, pivot 11 is all installed at the both ends of rolling band 6, the surface of rolling band 6 is provided with scale mark 7, the top of the rear end of support 1 is provided with first bracing piece 12, indicator plate 13 is installed to the centre of first bracing piece 12, the surface cover of pivot 11 is equipped with drive gear 14, the front end of support 1 is provided with linkage assembly 4, the bottom end of the linkage component 4 is connected with a first steel cable 20, the bottom end of the first steel cable 20 is provided with a floating mechanism 2, the water level measuring device is structurally installed at the position of the shore through a bracket 1, the floating mechanism 2 at the bottom end extends towards the front end through the length of the bracket 1, and the water level is measured on the water surface area at the front end of the bracket 1, so that the measuring range is the extending position of the bracket 1, the specific position of water level measurement and the measurable range of water level change can be controlled by controlling the length of the bracket 1, two groups of floating mechanisms 2 can be installed through two groups of bracket 1 structures and matched components, the measured data of the two groups of floating mechanisms 2 are averaged, and the effect of improving the measuring precision is achieved, when in installation, the bracket 1 is installed at the position of the shore with the water surface to be measured through a screw firstly passing through a fixed block 9 at the rear end of the bracket 1, the support 1 is parallel to the horizontal plane, and the rotating belt 6 at the top end and the corresponding measuring and reading mechanism are both higher than the shore, so that the support can be effectively prevented from being soaked by water, and the support is ensured to have longer service life.
In this embodiment, the floating mechanism 2 includes the counterweight ball 3 and the floating plate 21, the top end of the counterweight ball 3 is fixedly connected with the bottom end of the first steel cable 20, the inside of the counterweight ball 3 is provided with the buffer slot 25, the buffer spring 26 is installed inside the buffer slot 25, the bottom end of the buffer spring 26 is connected with the limiting plate 24, the floating plate 21 is installed under the limiting plate 24, the counterweight ball 3 and the limiting plate 24 are made of alloy steel, the limiting plate 24 is of a disc structure, the side edge of the limiting plate 24 is attached to the inner wall of the buffer slot 25, the connecting point of the first steel cable 20 and the counterweight ball 3 is aligned with the central axis of the buffer slot 25, the floating mechanism 2 is composed of the counterweight ball 3 and the floating plate 21, the floating plate 21 is directly contacted with the water surface to float, and then because the weight control is suspended in the air, when the water level is lowered, the floating plate 21 moves downwards, the downward movement range of the steel cable is converted into the rotation range of the part of the rotating shaft 11 through the linkage assembly 4 finally through the downward movement of the first steel cable 20 and the second steel cable 23, the rotating belt 6 at the top end is driven to turn over, the scale lines 7 are engraved on the surface of the rotating belt 6, the scale lines 7 are aligned with the indicating plate 13 at the rear end of the bracket 1, when the water level is installed, the single measurement needs to be carried out on the water level height of the floating plate 21 in the initial state, the measurement data is used as the initial value in the state, namely, the value of the scale lines 7 marked by the indicating plate 13 in the state is the current water level depth, therefore, after the subsequent water level is lowered, the change can be carried out on the basis of the initial value, after the water level is lowered, the rotating belt 6 is driven to rotate, and the changed water level value can be read through changing the scale lines 7 corresponding to the indicating plate 13.
In this embodiment, the weight of the counterweight ball 3 is greater than the weight of the floating plate 21, the elastic strength of the back-off spring 17 in the ultimate stretching state is less than the sum of the weights of the counterweight ball 3 and the floating plate 21, and by setting the weight, in a theoretical state, the back-off spring 17 is less than the sum of the weights of the counterweight ball 3 and the floating plate 21, so that the counterweight ball 3 and the floating plate 21 will naturally fall down until the bottom end of the floating plate 21 is supported by the buoyancy exerted by water, at this time, the buoyancy of the water surface plays a role in supporting the floating plate 21, and further the back-off spring 17 can pull the floating counterweight ball 3 and the floating plate 21, that is, a stable state can be achieved, because the pulling force of the back-off spring 17 is greater than the dead weight of the counterweight ball 3, so that the counterweight ball 3 is always pulled upwards by the back-off spring 17 to keep floating, therefore, the counterweight ball 3 is not affected by the fluctuation of the water surface, and when the floating plate 21 is deviated due to the fluctuation of the water surface, can be withheld by the naturally flagging counter weight ball 3 in top, avoid taking place great skew along with the wave, the first cable wire 20 on top as far as possible is close the vertical state during can, through this structure, can alleviate the undulant great influence of producing to the position of relocation mechanism 2 of surface of water, make relocation mechanism 2 be in lantern ring 19 as far as possible under, and then make subsequent measuring result more accurate, and this state can not change along with the change of water level, can eliminate the lift connecting piece that uses the cable wire to replace rigid part through this structure, therefore, the cost is reduced, and can be applicable to the waters of arbitrary degree of depth.
In this embodiment, the linkage assembly 4 includes a rotating shaft 11 and a guide post 18, the first steel cable 20 passes through the surface of the guide post 18, a sleeve ring 19 is disposed at the front end of the bracket 1, the steel cable passes through the inside of the sleeve ring 19, two ends of the rotating shaft 11 are embedded inside the upright post 10 through bearings 15, one end of the first steel cable 20 is fixedly connected to the end of the rotating shaft 11, two transmission gears 14 are mounted on the surface of each rotating shaft 11, the rotating belt 6 pulls the rotating shaft 11 and the transmission gears 14 to rotate through the first steel cable 20, when the floating mechanism 2 changes with the water level, the floating plate 21 is pulled down to drive the first steel cable 20 at the top end to move down, after the floating plate 21 moves up, the linkage assembly 4 can be driven to move reversely through the mechanism 5 at the top end, at this time, the steel cable vertically moves up and down from the inside of the sleeve ring 19, and then goes out of the top end of the sleeve ring 19, the end of the first steel cable 20 is fixedly connected with the end part of the rotating shaft 11 and has a large number of winding turns, so that the part wound on the rotating shaft 11 can be pulled out when the first steel cable 20 is pulled down, the torque can be applied to the rotating shaft 11 in the pulling process to enable the rotating shaft 11 to rotate, finally the rotating belt is driven to rotate through the middle driven gear and the rotating belt 6 sleeved in the middle of the rotating belt, when the floating plate 21 moves upwards, the rotating shaft 11 can rotate reversely through the adjusting mechanism 5, and therefore the stretched first steel cable 20 is partially reeled on the surface again, and the bidirectional regulation and control effect is achieved.
This embodiment, the centre of kickboard 21 is through the bottom fixed connection of second cable 23 and limiting plate 24, the side of kickboard 21 is provided with a plurality of supplementary stay cords 22, kickboard 21 and counterweight ball 3 all are provided with two sets ofly, the density that kickboard 21 floated on the surface of water that awaits measuring through the bottom surface is less than the density of water, nevertheless can make its dead weight be greater than the dead weight of counterweight ball 3 through the volume that increases kickboard 21, can improve the stability between kickboard 21 and the counterweight ball 3 through the supplementary stay cord 22 of multiunit at the side of kickboard 21 to make counterweight ball 3 be in directly over the kickboard 21 focus all the time, consequently cooperate foretell weight relation control, but furthest's control kickboard 21 receives the skew influence that the fluctuation of water wave produced.
In this embodiment, the surface of the back-adjusting mechanism 5 and the surface of the bracket 1 are on the same horizontal plane, the back-adjusting mechanism 5 is connected with the back-adjusting spring 17 through the second support rod 16, the fixing block 9 is installed at the rear end of the bracket 1, two sets of the back-adjusting springs 17 are provided, the rear ends of the back-adjusting springs 17 are symmetrically installed at two sides of the second support rod 16, the rotating belt 6 is in a rotating state reverse to that when the first steel cable 20 is pulled through the pulling of the back-adjusting springs 17, the interior of the counterweight ball 3 is in contact with the floating plate 21 at the bottom end through the buffer spring 26, and therefore when the floating plate 21 vibrates up and down due to the influence of water waves, the buffer spring 26 is used for preliminary compensation, if the water waves move up the floating plate 21 instantaneously, the second steel cable 23 is loosened, the buffer spring 26 contracts the second steel cable 23, and only compensates the length of the second steel cable 23, so that the second steel cable 23 can be instantaneously restored to a tensioned state, therefore, the situation that the second steel cable 23 is loosened and equivalently transmitted to the first steel cable 20 by the upward movement of the floating plate 21 can be avoided, the instantaneous height change of the floating plate 21 is eliminated and fed back to the rotating belt 6 through the first steel cable 20, the instantaneous influence of waves on the floating plate 21 is eliminated, the data indication structure part at the top end is enabled not to generate influence, the water level in a long period of time is convenient to read, and the reading result of the measured data is further simplified.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The utility model provides a water level measuring device for water conservancy water and electricity, includes the measuring device body, its characterized in that: the measuring device body comprises a support (1) and a floating mechanism (2), an upright post (10) is installed at the top end of the support (1), a back-adjusting mechanism (5) is arranged at the bottom of the rear end of the support (1), a rotating belt (6) is arranged above the back-adjusting mechanism (5), a back-adjusting spring (17) is installed at one side of the back-adjusting mechanism (5), pull rods (8) are installed at two sides of the rotating belt (6), one side of each pull rod (8) is fixedly connected with one end of the back-adjusting spring (17), rotating shafts (11) are installed at two ends of the rotating belt (6), scale marks (7) are arranged on the surface of the rotating belt (6), a first supporting rod (12) is arranged at the top of the rear end of the support (1), an indicating plate (13) is installed in the middle of the first supporting rod (12), and a surface transmission gear (14) of each rotating shaft (11) is sleeved on the top of the corresponding support, the front end of the support (1) is provided with a linkage assembly (4), the bottom end of the linkage assembly (4) is connected with a first steel cable (20), and the bottom end of the first steel cable (20) is provided with a floating mechanism (2).
2. The water level measuring device for water conservancy and hydropower according to claim 1, which is characterized in that: floating machanism (2) are including counter weight ball (3) and kickboard (21), the top of counter weight ball (3) and the bottom fixed connection of first cable wire (20), the inside of counter weight ball (3) is provided with dashpot (25), the internally mounted of dashpot (25) has buffer spring (26), the bottom of buffer spring (26) is connected with limiting plate (24), kickboard (21) are installed under limiting plate (24).
3. The water level measuring device for water conservancy and hydropower according to claim 2, characterized in that: the counterweight ball (3) and the limiting plate (24) are integrally made of alloy steel, the limiting plate (24) is of a disc structure, the side edge of the limiting plate (24) is attached to the inner wall of the buffer groove (25), and the connecting point of the first steel cable (20) and the counterweight ball (3) and the central axis of the buffer groove (25) are located on the same straight line.
4. The water level measuring device for water conservancy and hydropower according to claim 2, characterized in that: the weight of the counterweight ball (3) is greater than that of the floating plate (21), and the elastic force of the adjusting spring (17) in the ultimate stretching state is less than the sum of the weights of the counterweight ball (3) and the floating plate (21).
5. A water level measuring device for water conservancy and hydropower according to claim 3, characterized in that: the linkage assembly (4) comprises a rotating shaft (11) and a guide post (18), a first steel cable (20) bypasses from the surface of the guide post (18), a sleeve ring (19) is arranged at the front end of the support (1), the steel cable penetrates through the inner part of the sleeve ring (19), and two ends of the rotating shaft (11) are embedded in the inner side of the upright post (10) through bearings (15).
6. A water level measuring device for water conservancy and hydropower according to claim 5, which is characterized in that: one end of the first steel cable (20) is fixedly connected with the end part of the rotating shaft (11), two transmission gears (14) are mounted on the surface of each rotating shaft (11), and the rotating belt (6) pulls the rotating shaft (11) and the transmission gears (14) to rotate through the first steel cable (20).
7. The water level measuring device for water conservancy and hydropower according to claim 2, characterized in that: the middle of the floating plate (21) is fixedly connected with the bottom end of the limiting plate (24) through a second steel cable (23), and a plurality of auxiliary pull ropes (22) are arranged on the side edge of the floating plate (21).
8. A water level measuring device for water conservancy and hydropower according to claim 7, which is characterized in that: the floating plate (21) and the counterweight balls (3) are provided with two groups, and the floating plate (21) floats on the water surface to be measured through the bottom surface.
9. The water level measuring device for water conservancy and hydropower according to claim 1, which is characterized in that: the surface of the back-adjusting mechanism (5) and the surface of the support (1) are located on the same plane, the back-adjusting mechanism (5) is connected with a back-adjusting spring (17) through a second supporting rod (16), and a fixing block (9) is installed at the rear end of the support (1).
10. A water level measuring device for water conservancy and hydropower according to claim 9, which is characterized in that: the back adjusting springs (17) are arranged in two groups, the rear ends of the back adjusting springs (17) are symmetrically arranged on two sides of the second supporting rod (16), and the rotating belt (6) is in a rotating state opposite to that of the first steel cable (20) when pulled through the back adjusting springs (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210461511.8A CN114674398B (en) | 2022-04-28 | 2022-04-28 | Water level measuring device for water conservancy and hydropower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210461511.8A CN114674398B (en) | 2022-04-28 | 2022-04-28 | Water level measuring device for water conservancy and hydropower |
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| Publication Number | Publication Date |
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| CN114674398A true CN114674398A (en) | 2022-06-28 |
| CN114674398B CN114674398B (en) | 2022-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210461511.8A Active CN114674398B (en) | 2022-04-28 | 2022-04-28 | Water level measuring device for water conservancy and hydropower |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117249883A (en) * | 2023-10-27 | 2023-12-19 | 三峡金沙江云川水电开发有限公司 | Water level measuring device for hydropower plant |
| CN117433609A (en) * | 2023-12-20 | 2024-01-23 | 三峡金沙江云川水电开发有限公司 | Water level measuring device |
| CN117705219A (en) * | 2024-02-05 | 2024-03-15 | 青岛地质工程勘察院(青岛地质勘查开发局) | Drilling water level measuring device for hydrogeology investigation |
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| CN211877190U (en) * | 2020-05-22 | 2020-11-06 | 河南浩多顺节能环保科技有限公司 | Water level testing device |
| CN215984755U (en) * | 2021-08-27 | 2022-03-08 | 山东省调水工程运行维护中心 | Hydraulic engineering water level measuring device |
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| EP0138256A2 (en) * | 1983-09-29 | 1985-04-24 | N.V. Verenigde Instrumentenfabrieken ENRAF-NONIUS | Liquid level gauge |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117249883A (en) * | 2023-10-27 | 2023-12-19 | 三峡金沙江云川水电开发有限公司 | Water level measuring device for hydropower plant |
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| CN117705219A (en) * | 2024-02-05 | 2024-03-15 | 青岛地质工程勘察院(青岛地质勘查开发局) | Drilling water level measuring device for hydrogeology investigation |
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| Publication number | Publication date |
|---|---|
| CN114674398B (en) | 2022-11-29 |
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