CN111693117B - Floating type water level alarm device for hydropower station - Google Patents
Floating type water level alarm device for hydropower station Download PDFInfo
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- CN111693117B CN111693117B CN202010705305.8A CN202010705305A CN111693117B CN 111693117 B CN111693117 B CN 111693117B CN 202010705305 A CN202010705305 A CN 202010705305A CN 111693117 B CN111693117 B CN 111693117B
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- water level
- level alarm
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- floating
- frame body
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 103
- 230000000712 assembly Effects 0.000 claims abstract 3
- 238000000429 assembly Methods 0.000 claims abstract 3
- 239000002184 metal Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 13
- 238000005452 bending Methods 0.000 claims description 12
- 230000000670 limiting effect Effects 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 abstract description 20
- 238000000034 method Methods 0.000 description 8
- 238000001914 filtration Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
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Classifications
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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
- G01F23/64—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 of the free float type without mechanical transmission elements
- G01F23/68—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 of the free float type without mechanical transmission elements using electrically actuated indicating means
- G01F23/70—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 of the free float type without mechanical transmission elements using electrically actuated indicating means for sensing changes in level only at discrete points
- G01F23/703—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 of the free float type without mechanical transmission elements using electrically actuated indicating means for sensing changes in level only at discrete points using electromechanically actuated indicating means
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Level Indicators Using A Float (AREA)
Abstract
The invention discloses a floating type water level alarm device for a hydropower station, which comprises a measuring frame body (1) fixed on a river levee, wherein a liftable floating assembly (4) is arranged on the surface of the measuring frame body (1), a sealed cavity is formed inside the measuring frame body (1), a plurality of water level alarm switches (2) are distributed in the sealed cavity at intervals, a swing rod assembly (3) rotatably connected with the sealed cavity is arranged on one side of each water level alarm switch (2), one end of each swing rod assembly (3) is in mutual contact with the corresponding water level alarm switch (2), the end part of each swing rod assembly (3) extends to the outer side of the sealed cavity and is in mutual contact with the corresponding floating assembly (4), and the swing rod assemblies (3) are mutually connected with the measuring frame body (1) through the sealed assemblies (5). The invention has the characteristics of good monitoring stability and difficult damage of the alarm.
Description
Technical Field
The invention relates to a water level alarm device, in particular to a floating water level alarm device for a hydropower station.
Background
The water level difference between the upstream water inlet section and the downstream tail water inlet section of the hydropower station is an important parameter for adjusting the operation of a water turbine in the hydropower station, and when the water level is too high or a flood peak comes, if no stable water level monitoring system carries out early warning, serious safety problems can be caused to a dam. Due to the characteristics of large depth and complex operation environment of a water body monitored by a hydropower station, a sensor of the hydropower station is easily influenced by rainstorm, flooding or water flow with high flow rate, and the monitoring precision of the hydropower station is seriously reduced; and along with the lengthening of the operation time, the accuracy, the stability and the detection precision of the sensor are also reduced. Therefore, most conventional liquid level meters on the market hardly meet the requirements of hydropower stations on high stability requirements and long monitoring periods of liquid level monitoring mechanisms.
According to the traditional hydropower station monitoring method, a person periodically goes to a measurement site to obtain water level information by using a water level rod, but the required measurement positions are respectively positioned at the upstream and the downstream of a water body, so that the method has the problems of low monitoring efficiency and labor consumption, and the conventional hydropower station gradually replaces manual monitoring by an automatic water level alarm device. The water level alarm device is provided with a plurality of alarms in sequence, and wiring terminals of the alarms are arranged in water bodies with different heights; when the water level rises, the end of the butt joint wire is immersed and the circuit is conducted, so that the alarm gives an alarm after the passage. And the water level monitoring at different heights is realized by utilizing the wiring terminals at different heights.
However, the water level alarm device can cause the wiring terminal of the water level alarm device to be soaked in water for a long time, so that the water body can continuously corrode and scour the wiring terminal after soaking, the phenomenon of failure or damage is easy to occur, the stability is low, and the water level alarm device needs to be maintained and replaced regularly. In addition, the water level can cause the water level to float up and down when the water level rises and falls, and when the water level is at a critical position with the wiring terminal, the floating state can cause frequent fluctuation between connection and disconnection of the alarm. Aiming at the phenomenon, the conventional alarm device only adopts a conventional first-order lag filtering algorithm to overcome periodic interference caused by high-frequency fluctuation; however, the filtering algorithm has the problems of long sampling period and low sensitivity, once the water level height is changed in a short time and in a large range, the system is difficult to react quickly and give an alarm, and instantaneity and accuracy of the alarm device in the monitoring process are reduced.
Therefore, the existing water level alarm device for monitoring the water level has the problems of poor monitoring stability and easy damage of an alarm.
Disclosure of Invention
The invention aims to provide a floating type water level alarm device for a hydropower station. The monitoring device has the characteristics of good monitoring stability and difficult damage of the alarm.
The technical scheme of the invention is as follows: the utility model provides a power station is with floating formula water level alarm device, including fixing the measurement support body on the river levee, the surface of measuring the support body is equipped with the showy subassembly of liftable, measure the inside sealed cavity that forms of support body, it has a plurality of water level alarm switch to distribute according to the interval in the sealed cavity, water level alarm switch one side is equipped with the pendulum rod subassembly of rotating connection sealed cavity, pendulum rod subassembly one end and water level alarm switch contact each other, pendulum rod subassembly tip extends to the sealed cavity outside and with showy subassembly contact each other, through sealed subassembly interconnect between pendulum rod subassembly and the measurement support body.
In the floating water level alarm device for the hydropower station, the swing rod assembly comprises a swing shaft which is rotatably connected to the measuring frame body, a first swing rod is arranged at one end of the swing shaft, the other end of the swing shaft extends to the outer side of the sealed cavity and is provided with a second swing rod, a press-fit surface which presses the water level alarm switch is arranged at one end of the first swing rod, a bending block is arranged at the other end of the first swing rod, and the second swing rod is in contact with the floating assembly; the side wall of the measuring frame body is provided with blocking surfaces positioned on two sides of the end part of the first swing rod, and the inner side of each blocking surface is provided with a concave surface buckled with the bending block.
In the floating water level alarm device for the hydropower station, the sealing assembly comprises a connecting flange, the outer part of the connecting flange is in threaded connection with the fine teeth of the measuring frame body, the inner part of the connecting flange is completely attached to the outer wall of the oscillating shaft, a sealing ring is arranged between the end part of the connecting flange and the measuring frame body, and the inner ring of the sealing ring is attached to the outer wall of the oscillating shaft.
In the floating water level alarm device for the hydropower station, the floating assembly comprises a lifting plate, the left side and the right side of the lifting plate are slidably connected with the measuring frame body, the inner side of the lifting plate is provided with a collision block which collides with the second swing rod, and the outer side of the lifting plate is rotatably connected with a floating ball positioned on the surface of a water body.
In the floating water level alarm device for the hydropower station, a metal elastic sheet is arranged at one end, close to the collision block, of the second swing rod, and the metal elastic sheet interferes with the collision block along the length direction of the measuring frame body.
Among the aforesaid floating type water level alarm device for power station, the floater rotates along vertical direction through the dwang and connects on the lifter plate, and the tip of dwang is equipped with the bulge, be equipped with on the lifter plate and form spacing stopper to the tip of dwang, the stopper is located the upper and lower both sides of stopper respectively.
In the floating water level alarm device for a hydropower station, the rotation angle of the rotating rod is 20 to 30 degrees.
In the aforementioned floating type water level alarm device for hydropower station, the water level alarm switch includes a button switch matched with the swing rod assembly, and the button switch extends to the top of the measuring frame body through a connection circuit and is connected with a water level alarm.
Compared with the prior art, the invention has the following characteristics:
(1) the invention can effectively avoid the direct contact of the water level alarm switch with the water body, thereby improving the working stability and the service life of the water level alarm switch; meanwhile, the swing rod assembly and the floating assembly are mechanically linked to complete the opening and closing actions of the water level alarm switch, so that the problem of faults caused after the electric element is soaked by water is avoided, the overall monitoring stability is improved, and the service life is prolonged; meanwhile, the influence of the sensitivity of the sensor on the alarm accuracy can be reduced by triggering the water level alarm switch through a mechanical structure, so that the monitoring stability of the water level alarm switch can be ensured in a complete monitoring period;
(2) according to the invention, through the structural cooperation of the swing rod component, the free rotation of the swing shaft caused by the flow and fluctuation of the external water body can be avoided, so that the interference of the water level height to the structure of the linkage in the processes of large-scale lifting and flowing is reduced, and the pressing stability of the swing rod component to the water level alarm switch is improved;
(3) the sealing assembly is matched to achieve a good sealing and waterproof effect, so that moisture is prevented from entering the sealed cavity from a gap, and the water-resisting effect and the stability of the water level alarm switch are improved;
(4) the floating ball can lift and rotate within a small angle due to the structural coordination of the floating assembly, so that the floating ball cannot touch a frequent switch of the water level alarm device in the process of fluctuating along with the water surface, the monitoring stability of the water level is further improved, the use loss of the water level alarm device under the frequent switch is reduced, and the service life of the water level alarm device is prolonged; compared with the conventional filtering algorithm, the filtering method realized by using the mechanical structure does not generate the problems of delayed alarm and reduced sensitivity, can quickly react to the high-frequency fluctuation and short-term large-scale lifting of the water body, overcomes the limitations of the filtering algorithm and the interference caused by complex weather conditions, and further improves the accuracy and instantaneity of the invention for monitoring the water level;
(5) the invention completes the rotation of the swing shaft by shifting the metal elastic sheet, so that the lifting plate can keep a stable switch on the water level alarm device in the repeated lifting process, thereby ensuring the monitoring effect of the invention;
therefore, the invention has the characteristics of good monitoring stability and difficult damage of the alarm.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of the line A of FIG. 1;
FIG. 3 is a schematic view of the first rocker and the push button switch;
FIG. 4 is a schematic structural view of an impact mass and a second rocker;
fig. 5 is a schematic structural view of the seal assembly.
The labels in the figures are: 1-a measuring frame body, 2-a water level alarm switch, 3-a swing rod assembly, 4-a floating assembly, 5-a sealing assembly, 101-a blocking surface, 102-a concave surface, 301-a swing shaft, 302-a first swing rod, 303-a second swing rod, 304-a bending block, 305-a metal elastic sheet, 401-a lifting plate, 402-an impact block, 403-a floating ball, 404-a rotating rod, 405-a convex part, 406-a limiting block, 501-a connecting flange and 502-a sealing ring.
Detailed Description
The invention is further described with reference to the following figures and examples, which are not to be construed as limiting the invention.
Examples are given. The utility model provides a power station is with floating formula water level alarm device, constitute as shown in figure 1, including fixing measurement support body 1 on the river levee, the surface of measuring support body 1 is equipped with the showy subassembly 4 of liftable, measure the inside sealed cavity that forms of support body 1, it has a plurality of water level alarm switch 2 to follow 1 length direction of measurement support body in the sealed cavity according to interval distribution, water level alarm switch 2 one side is equipped with the pendulum rod subassembly 3 of connecting sealed cavity rotatably, 3 one end of pendulum rod subassembly and water level alarm switch 2 contact each other, 3 tip extensions of pendulum rod subassembly extend to the sealed cavity outside and with showy subassembly 4 contact each other, pendulum rod subassembly 3 and measure between the support body 1 through sealed subassembly 5 interconnect.
The swing rod assembly 3 comprises a swing shaft 301 which is rotatably connected to the measuring frame body 1, a first swing rod 302 is arranged at one end of the swing shaft 301, the other end of the swing shaft 301 extends to the outer side of the sealed chamber and is provided with a second swing rod 303, a pressing surface which presses the water level alarm switch 2 is arranged at one end of the first swing rod 302, the first swing rod 302 presses the water level alarm switch 2 through the pressing surface after rotating, a bending block 304 is arranged at the other end of the first swing rod 302, and the second swing rod 303 is in contact with the floating assembly 4; the side wall of the measuring frame body 1 is provided with a blocking surface 101 positioned at two sides of the end part of the first swing rod 302, and the inner side of the blocking surface 101 is provided with a concave surface 102 buckled with the bending block 304.
The sealing assembly 5 comprises a connecting flange 501, the outer portion of the connecting flange 501 is in threaded connection with the fine threads of the measuring frame body 1, the inner portion of the connecting flange 501 is completely attached to the outer wall of the oscillating shaft 301, a sealing ring 502 is arranged between the end portion of the connecting flange 501 and the measuring frame body 1, and the inner ring of the sealing ring 502 is attached to the outer wall of the oscillating shaft 301.
The floating assembly 4 comprises a lifting plate 401, the left side and the right side of the lifting plate 401 are slidably connected with the measuring frame body 1, an impact block 402 which collides with the second swing rod 303 is arranged on the inner side of the lifting plate 401, and a floating ball 403 positioned on the surface of a water body is rotatably connected to the outer side of the lifting plate 401.
One end of the second swing rod 303, which is close to the impact block 402, is provided with a metal elastic sheet 305, and the metal elastic sheet 305 is located at the edge of the impact block 402 along the length direction of the measuring frame body 1 and interferes with the impact block 402; the torsion force required for the metal dome 305 to bend is larger than the deformation force of the bending block 304.
The floater 403 is connected to the lifting plate 401 through the rotating rod 404 along the vertical direction, the end of the rotating rod 404 is provided with a protruding part 405, the lifting plate 401 is provided with a limiting block 406 for limiting the end of the rotating rod 404, and the limiting block 406 is respectively positioned at the upper side and the lower side of the limiting block 406.
The rotating angle of the rotating rod 404 is 20-30 degrees.
The water level alarm switch 2 comprises a button switch matched with the swing rod component 3, the button switch extends to the top of the measuring frame body 1 through a connecting circuit and is connected with a water level alarm, and the connecting circuit is arranged in the sealed cavity.
The working principle of the invention is as follows: the invention is arranged on the side wall of the dam body, the lower end of the measuring frame body 1 extends into the water body, and the floating component 4 is positioned on the surface of the water body under the action of the floating ball 403. When the water level rises, the floating ball 403 drives the lifting plate 401 to move upwards, the collision block 402 of the lifting plate 401 contacts with the metal elastic sheet 305 at the end of the second swing rod 303 in the moving process, and the swing shaft 301 is driven to rotate through the second swing rod 303. The first swing rod 302 on the swing shaft 301 is mutually separated from the button switch in an initial state, and meanwhile, the bending block 304 at the end part of the first swing rod is mutually buckled with the concave surface 102 on one side; when the swing shaft 301 rotates, the torsion drives the bending block 304 to bend and separate from the concave surface 102, meanwhile, the first swing rod 302 rotates towards the button switch direction and presses the button switch by using the pressing surface, and the button switch triggers the water level alarm to alarm, namely, the alarm work of the water level at the height is realized.
After the first swing rod 302 rotates to the right position, the first swing rod is located at the middle position of the button switch, and meanwhile, the bending block 304 is buckled into the concave surface 102 on the other side and attached to the blocking surface 101, so that the first swing rod cannot rotate continuously. In this position, the rising of the impact mass 402 cannot drive the metal elastic sheet 305 to continue rotating, and the metal elastic sheet 305 is forced to bend, so that the metal elastic sheet 305 is separated from the impact mass 402 instantly after bending, and is located below the impact mass 402 when resetting; the collision block 402 continues to rise by the driving of the lifting plate and completes the alarm to the next water level alarm switch 2. Similarly, when the water level drops, the floating component 4 sequentially drives the first swing rods 302 of the swing rod components 3 to be separated from the button switch, and the alarm is turned off.
When the floating ball 403 floats under the influence of the water surface, the floating ball can freely rotate and lift within the range of 20-30 degrees under the limiting action of the protruding portion 405 and the limiting block 406, namely, the lifting plate 401 cannot lift in the rotating process. The lifting range is natural floating caused by the influence of the water surface on the floating ball 403 when the water level is unchanged, and the bulge 405 freely rotates between the limit blocks 406 on the two sides at the moment; when the water level changes, the protrusion 405 at the end of the rotating rod 404 and the limiting block 406 at one side thereof are abutted against each other, and then the lifting plate 401 is driven to lift.
Claims (4)
1. The utility model provides a power station is with floating formula water level alarm device which characterized in that: the device comprises a measuring frame body (1) fixed on a river levee, wherein a liftable floating assembly (4) is arranged on the surface of the measuring frame body (1), a sealed cavity is formed inside the measuring frame body (1), a plurality of water level alarm switches (2) are distributed in the sealed cavity at intervals, a swing rod assembly (3) which is rotatably connected with the sealed cavity is arranged on one side of each water level alarm switch (2), one end of each swing rod assembly (3) is in contact with the corresponding water level alarm switch (2), the end part of each swing rod assembly (3) extends to the outer side of the sealed cavity and is in contact with the floating assembly (4), and the swing rod assemblies (3) and the measuring frame body (1) are connected with each other through the sealed assembly (5);
the swing rod assembly (3) comprises a swing shaft (301) rotatably connected to the measuring frame body (1), a first swing rod (302) is arranged at one end of the swing shaft (301), the other end of the swing shaft (301) extends to the outer side of the sealed chamber and is provided with a second swing rod (303), a pressing surface for pressing the water level alarm switch (2) is arranged at one end of the first swing rod (302), a bending block (304) is arranged at the other end of the first swing rod (302), and the second swing rod (303) is in mutual contact with the floating assembly (4); blocking surfaces (101) positioned at two sides of the end part of the first swing rod (302) are arranged on the side wall of the measuring frame body (1), and concave surfaces (102) buckled with the bending blocks (304) are arranged on the inner sides of the blocking surfaces (101);
the floating assembly (4) comprises a lifting plate (401), the left side and the right side of the lifting plate (401) are connected with the measuring frame body (1) in a sliding mode, collision blocks (402) which collide with the second swing rods (303) are arranged on the inner side of the lifting plate (401), and floating balls (403) located on the surface of a water body are connected to the outer side of the lifting plate (401) in a rotating mode;
the floating ball (403) is rotatably connected to the lifting plate (401) through a rotating rod (404) in the vertical direction, a protruding part (405) is arranged at the end part of the rotating rod (404), a limiting block (406) for limiting the end part of the rotating rod (404) is arranged on the lifting plate (401), and the limiting blocks (406) are respectively positioned at the upper side and the lower side of the rotating rod (404); the rotating angle of the rotating rod (404) is 20-30 degrees.
2. The floating water level alarm device for the hydropower station according to claim 1, wherein: sealing component (5) include flange (501), flange (501) outside and measure support body (1) fine thread connection, flange (501) inside with the outer wall of swing axle (301) laminate completely, be equipped with sealing washer (502) between flange (501) tip and the measurement support body (1), the inner ring of sealing washer (502) laminates with the outer wall of swing axle (301) each other.
3. The floating water level alarm device for the hydropower station according to claim 1, wherein: one end, close to the collision block (402), of the second swing rod (303) is provided with a metal elastic sheet (305), and the metal elastic sheet (305) interferes with the collision block (402) along the length direction of the measuring frame body (1).
4. The floating water level alarm device for the hydropower station according to claim 1, wherein: the water level alarm switch (2) comprises a button switch matched with the swing rod assembly (3), and the button switch extends to the top of the measuring frame body (1) through a connecting circuit and is connected with a water level alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010705305.8A CN111693117B (en) | 2020-07-21 | 2020-07-21 | Floating type water level alarm device for hydropower station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010705305.8A CN111693117B (en) | 2020-07-21 | 2020-07-21 | Floating type water level alarm device for hydropower station |
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| Publication Number | Publication Date |
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| CN111693117A CN111693117A (en) | 2020-09-22 |
| CN111693117B true CN111693117B (en) | 2022-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010705305.8A Active CN111693117B (en) | 2020-07-21 | 2020-07-21 | Floating type water level alarm device for hydropower station |
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| CN113990526A (en) * | 2021-10-26 | 2022-01-28 | 中国核动力研究设计院 | Processing method and system for avoiding abnormal fluctuation of water level measurement value of voltage stabilizer |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4800372A (en) * | 1986-11-17 | 1989-01-24 | Poteet John H | Flood alarm |
| CN205785437U (en) * | 2016-07-18 | 2016-12-07 | 温州冲亚电子科技有限公司 | A kind of water level monitoring alarm device |
| CN106768188B (en) * | 2017-03-01 | 2019-05-17 | 中国石油化工股份有限公司 | A kind of simple water jacket furnace water level monitoring system |
| CN108871507A (en) * | 2018-07-11 | 2018-11-23 | 无锡南理工科技发展有限公司 | A kind of electromechanical integration water-level alarm mechanism and application method |
| CN208443461U (en) * | 2018-08-14 | 2019-01-29 | 赵光磊 | A kind of critical automatic alarm device of water level |
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