A water flow velocity measuring radar for water conservancy monitoring

Abstract

The invention relates to a water flow velocity measuring radar for water conservancy monitoring using the field of radio wave ranging. In the application, an anti-fouling unit is used to effectively protect a flow velocity detection unit. When the flow velocity detection unit detects that there is a fixed foreign object at a short distance on the surface of the anti-fouling unit, the anti-fouling work is started, and the electric heating wire on the self-detaching lens farthest from the flow velocity detection unit is energized and heated, so that the self-detaching lens is locally overheated and cracked under the action of a prefabricated groove. The self-detaching lens contaminated with dirt drives the dirt to fall off together with the electric heating wire, and the remaining part of the anti-fouling unit continues to complete the anti-fouling task. After the outer layer of the self-detaching lens falls off, the prefabricated groove will not fall off again, and the flow velocity detection unit will be continuously protected. Even in an environment where dirt exists, the cleanliness of the flow velocity detection unit area can be kept for a long time, and there is no need for staff to frequently perform maintenance work, thereby improving the utilization efficiency of human resources.

Description

Technical Field

[0001] The invention relates to a water flow velocity measuring radar for water conservancy monitoring, in particular to a water flow velocity measuring radar for water conservancy monitoring applied in the field of radio wave ranging. Background Art

[0002] River flow is one of the most important reference materials in water conservancy project construction and hydrological and water resources management. The existing technology uses ultra-high frequency radar systems and completes basic verification tests. The radar can be set up on the river bank to measure the surface velocity distribution of the entire section without contacting the water body. The key core issues of ultra-high frequency radar combined with numerical methods to estimate river flow include river surface roughness structure analysis and surface flow inversion deep flow velocity modeling. The radar non-contact flow measurement method has great advantages in flexibility, safety, accuracy and cost control.

[0003] The invention patent CN115494492A specification discloses a laser ranging controlled water flow radar and a method for measuring water flow velocity. The method for measuring water flow velocity can detect navigable ships passing through the river. When a navigable ship passes through the river, the speed measurement signal fed back by the radar emission signal wave can be eliminated, thereby avoiding the ship signal measured by the radar from being mixed in the water flow velocity signal, causing data confusion and interference.

[0004] As a monitoring instrument that needs to be placed outdoors in remote areas for a long time, water flow velocity radar detection data is mostly achieved through wave transmission. Once the surface of the detection unit is blocked by dirt, it will affect the detection structure. Although the water flow velocity radar can judge whether the dirt is contaminated on the surface of the detection unit according to the detected dirt distance, and then decide whether to issue an alarm based on the judgment structure to remind maintenance personnel to perform maintenance in time, the areas where it is set up are often relatively remote, and too frequent maintenance work will cause a huge waste of human resources. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the areas where the existing water flow velocity measuring radars for water conservancy monitoring are installed are relatively remote, and too frequent maintenance work will cause a huge waste of human resources.

[0006] In order to solve the above problems, the present invention provides a water flow velocity measuring radar for water conservancy monitoring, comprising a fixed pile installed on a dam foundation, a remote terminal unit fixedly connected to the fixed pile, a water flow velocity measuring radar fixedly connected to one end of the fixed pile away from the dam foundation, and the remote terminal unit is connected to the water flow velocity measuring radar signal, the water flow velocity measuring radar comprises a radar body, a height detection unit fixedly connected to the lower end of the radar body, a flow velocity detection unit fixedly connected to the side wall of the radar body, and the water flow to be detected flows from the height detection unit to the flow velocity detection unit, an anti-fouling unit whose position matches the radar body is fixedly connected to the side wall of the radar body, and the interior of the anti-fouling unit is a sealed structure as a whole, the anti-fouling unit comprises a connecting frame and a protective mirror group matching each other, the connecting frame comprises a frame body, a plurality of fixed grooves are bored on the inner wall of the frame, self-detaching lenses matching themselves are respectively fixedly connected in the plurality of fixed grooves, a protective lens is fixedly connected in the fixed groove closest to the flow velocity detection unit, prefabricated grooves are bored on one end of the plurality of self-detaching lenses close to the flow velocity detection unit, and electric heating wires are buried in the plurality of prefabricated grooves.

[0007] In the above-mentioned water flow velocity measuring radar used in water conservancy monitoring, the flow velocity detection unit area can be kept clean for a long time, without the need for staff to perform frequent maintenance work, thereby improving the utilization efficiency of human resources.

[0008] As a further improvement of the present application, inert gas is filled between multiple adjacent heating wires and between adjacent heating wires and the protective lens, so that the heating wires are not easily oxidized quickly after being powered on, and are not easily affected in the efficiency of self-detaching lens rupture.

[0009] As a further improvement of the present application, a mounting groove is formed on the radar body, the position of which matches the flow velocity detection unit, an electric shaft is rotatably connected in the mounting groove, a photosensitive curtain is wound around the electric shaft, a pair of limit sliding grooves matching the position of the flow velocity detection unit are formed on the side wall of the radar body, a slider matching the limit sliding grooves is slidably connected in both limit sliding grooves, a connecting rod is fixedly connected between the two sliders, an end of the photosensitive curtain away from the electric shaft is fixedly connected to the connecting rod, an end of the connecting rod close to the flow velocity detection unit is a photosensitive unit, a plurality of light-emitting units are fixedly connected to an end of the protective lens close to the self-detaching lens, When the water flow speed measuring radar detects that the anti-fouling unit is stained with dirt, the photosensitive curtain can be used for detection and verification. The electric shaft is rotated to relax the photosensitive curtain. The photosensitive curtain falls along the direction of the limit sliding groove under the action of the slider, blocking the anti-fouling unit. At this time, the light beam generated by the light-emitting unit will be irradiated on the photosensitive curtain. When the self-detaching lens located on the outer layer is stained with dirt, there will be obvious gaps in the light beam received by the photosensitive curtain. This can be used to determine whether close-range dirt is stained on the self-detaching lens. After the self-detaching lens rupture command is verified twice, the rupture of the self-detaching lens will be initiated, thereby increasing the accuracy of the self-detaching lens rupture.

[0010] As a further improvement of the present application, multiple self-detaching lenses and protective lenses are made of colorless transparent glass to reduce the influence of the self-detaching lenses and protective lenses on the light beam generated by the light-emitting unit.

[0011] As another improvement of the present application, a sealing cover matching the mounting groove is fixedly connected to the upper opening of the mounting groove, and a pair of finger grooves are chiseled on the sealing cover to provide dust-proof protection for the mounting groove and facilitate maintenance personnel to maintain the structure inside the mounting groove.

[0012] As another improvement supplement to the present application, a telescopic rod is fixedly connected between the fixed pile and the water flow velocity measuring radar, the lower end of the water flow velocity measuring radar is fixedly connected to a water-breaking pile, and the end of the water-breaking pile away from the water flow velocity measuring radar is fixedly connected to a floating block. After the floating block is completely immersed in the river water, the buoyancy generated will lift the water-breaking pile and the water flow velocity measuring radar upward, and the buoyancy of the floating block will lift the water flow velocity measuring radar, so that the water flow velocity measuring radar always maintains a safe distance, so that the detection data of the water flow velocity measuring radar in multiple stages can maintain high accuracy.

[0013] As another improvement supplement of the present application, a compression spring is provided on the outer side of the telescopic rod, and the two ends of the compression spring are fixedly connected to the telescopic rod and the water flow velocity measuring radar respectively, thereby increasing the stability of the water flow velocity measuring radar, making it less likely for the water flow velocity measuring radar to shake excessively under the influence of short-term small-range fluctuations in the water flow, thereby increasing the accuracy of the detection results.

[0014] As another improvement of the present application, the cross-section of the water-breaking pile is in the shape of a water drop, with the tip of the water drop facing the opposite direction of the water flow, and the water-breaking pile and the floating block are both made of lightweight materials to reduce the erosion of the water flow on the water-breaking pile, making the structure of the water-breaking pile less likely to break and fail.

[0015] In summary, in the present application, the anti-fouling unit is used to effectively protect the flow velocity detection unit. When the flow velocity detection unit detects the presence of fixed foreign matter at a close distance on the surface of the anti-fouling unit, it can be determined that the self-detachable lens on the anti-fouling unit that is farthest from the flow velocity detection unit is contaminated with fixed dirt, and the anti-fouling work is started. The heating wire on the self-detachable lens farthest from the flow velocity detection unit is energized and heated, so that the self-detachable lens is locally overheated and cracked under the action of the prefabricated groove. The self-detachable lens contaminated with dirt drives the dirt to fall off together with the heating wire, and the remaining part of the anti-fouling unit continues to complete the anti-fouling task. After the outer layer of the self-detachable lens falls off, the prefabricated groove will no longer fall off, and the flow velocity detection unit will be continuously protected. Even in an environment with dirt, the flow velocity detection unit area can be kept clean for a long time, and there is no need for staff to frequently perform maintenance work, thereby improving the utilization efficiency of human resources.

[0016] At the same time, through the design of telescopic rods, compression springs, water-breaking piles and floating blocks, the water flow velocity measuring radar always maintains a safe distance, so that the detection data of the water flow velocity measuring radar in multiple stages can maintain high accuracy. At the same time, the stability of the water flow velocity measuring radar is increased, making it less likely for the water flow velocity measuring radar to shake too much under the influence of short-term small-range fluctuations in the water flow, thereby increasing the accuracy of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a water flow velocity measuring radar for water conservancy monitoring after installation in the first embodiment of the present application;

[0018] Figure 2 This is a schematic diagram of the structure of a water flow velocity measurement radar according to the first embodiment of the present application;

[0019] Figure 3 A side sectional view of a water flow velocity measuring radar according to a first embodiment of the present application;

[0020] Figure 4 This is a diagram showing the structural changes of the water velocity measuring radar when dirt detection is started in the first embodiment of the present application;

[0021] Figure 5 This is an exploded view of the main structure of the anti-fouling unit of the first embodiment of the present application;

[0022] Figure 6 This is a schematic structural diagram of an anti-fouling unit according to a first embodiment of the present application;

[0023] Figure 7 A side cross-sectional view of an anti-fouling unit according to a first embodiment of the present application;

[0024] Figure 8 This is a schematic diagram of the structure of a water flow velocity measuring radar for water conservancy monitoring after installation in the second embodiment of the present application;

[0025] Fig. 9 for Figure 8 Schematic diagram of the local structure at B in the middle;

[0026] Fig.10 This is a structural schematic diagram of the water avoidance unit of the second implementation unit of the present application.

[0027] Description of the numbers in the figure:

[0028] 1 dam foundation, 2 fixed piles, 3 remote terminal unit, 4 water flow velocity radar, 401 radar body, 402 flow velocity detection unit, 403 height detection unit, 404 installation slot, 405 electric shaft, 406 photosensitive curtain, 407 limit sliding slot, 408 slider, 409 connecting rod, 5 connecting frame, 501 frame body, 502 fixed slot, 6 protective mirror group, 601 self-detaching lens, 602 prefabricated slot, 603 heating wire, 604 protective lens, 605 light-emitting unit, 7 telescopic rod, 8 compression spring, 9 water-breaking pile, 10 floating block, 11 sealing cover, 12 anti-fouling unit. DETAILED DESCRIPTION

[0029] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0030] The first implementation method:

[0031] Figure 1-3 and Figure 5-7 A water flow velocity measuring radar for water conservancy monitoring is shown, comprising a fixed pile 2 installed on a dam foundation 1, a remote terminal unit 3 is fixedly connected to the fixed pile 2, a water flow velocity measuring radar 4 is fixedly connected to one end of the fixed pile 2 away from the dam foundation 1, and the remote terminal unit 3 is connected to the water flow velocity measuring radar 4 by signal, the water flow velocity measuring radar 4 comprises a radar body 401, a height detection unit 403 is fixedly connected to the lower end of the radar body 401, a flow velocity detection unit 402 is fixedly connected to the side wall of the radar body 401, and the water flow to be detected flows from the height detection unit 403 to the flow velocity detection unit 402, and a position and a position of the radar are fixedly connected to the side wall of the radar body 401. The anti-fouling unit 12 matches the main body 401, and the interior of the anti-fouling unit 12 is a sealed structure as a whole. The anti-fouling unit 12 includes a connecting frame 5 and a protective lens group 6 that match each other. The connecting frame 5 includes a frame body 501. A plurality of fixed grooves 502 are bored on the inner wall of the frame body 501. Self-detaching lenses 601 that match themselves are fixedly connected in the plurality of fixed grooves 502 respectively. A protective lens 604 is fixedly connected in the fixing groove 502 closest to the flow velocity detection unit 402. Prefabricated grooves 602 are bored on one end of the plurality of self-detaching lenses 601 close to the flow velocity detection unit 402. Heating wires 603 are buried in the plurality of prefabricated grooves 602.

[0032] In the present application, the anti-fouling unit 12 is used to effectively protect the flow velocity detection unit 402. When the flow velocity detection unit 402 detects that there is a fixed foreign object on the surface of the anti-fouling unit 12 at a close distance, it can be determined that the self-detaching lens 601 on the anti-fouling unit 12 that is farthest from the flow velocity detection unit 402 is stained with fixed dirt, and the anti-fouling work is started, and the electric heating wire 603 on the self-detaching lens 601 farthest from the flow velocity detection unit 402 is energized and heated, so that the self-detaching lens 601 is partially overheated, and ... 2, the self-detaching lens 601 stained with dirt drives the dirt to fall off together with the heating wire 603, and the remaining part of the anti-fouling unit 12 continues to complete the anti-fouling task. After the outer self-detaching lens 601 falls off, the prefabricated groove 602 will not fall off again, and the flow velocity detection unit 402 will be continuously protected. Even in an environment with dirt, the cleanliness of the flow velocity detection unit 402 area can be kept for a long time, without the need for staff to frequently perform maintenance work, thereby improving the utilization efficiency of human resources.

[0033] In the present application, the remote terminal unit 3 is connected to the water flow velocity radar 4 by signal, and the data received by the remote terminal unit 3 will be sent to the water flow velocity radar 4, which will process and forward it. The above-mentioned judgment of the dirt is performed by the water flow velocity radar 4, and the installation of the anti-fouling unit 12 will affect the conduction of the detection wave generated by the flow velocity detection unit 402 to a certain extent. However, when the structure of the anti-fouling unit 12 is determined, the influence of the above-mentioned conduction is a system error. Those skilled in the art can measure the influence of the anti-fouling unit 12 before use, and eliminate the influence of the anti-fouling unit 12 during the data processing process of the water flow velocity radar 4. In addition, the installation and power supply of the electrical structures in the remote terminal unit 3 and the water flow velocity radar 4 are well-known technologies to those skilled in the art, so they are not disclosed in detail in the present application. Those skilled in the art can make reasonable designs based on the existing technology. In addition, for the convenience of display, the specific dimensions of each structure in the present application are not strictly drawn according to the proportion. Those skilled in the art can make reasonable designs for the dimensions and even shapes of each structure according to actual needs.

[0034] Inert gas is filled between the adjacent heating wires 603 and the protective lens 604, so that the heating wires 603 are not easily oxidized after being powered on, and are not easy to affect the efficiency of the self-detaching lens 601. Figure 2-4 and Figure 7A mounting groove 404 is bored on the radar body 401, and the position thereof matches the flow velocity detection unit 402. An electric shaft 405 is rotatably connected in the mounting groove 404, and a photosensitive curtain 406 is wound around the electric shaft 405. A pair of limiting sliding grooves 407 matching the position of the flow velocity detection unit 402 are bored on the side wall of the radar body 401. Slide blocks 408 matching themselves are slidably connected in the two limiting sliding grooves 407. A connecting rod 409 is fixedly connected between the two slide blocks 408. One end of the photosensitive curtain 406 away from the electric shaft 405 is fixedly connected to the connecting rod 409, and one end of the connecting rod 409 close to the flow velocity detection unit 402 is a photosensitive unit. A plurality of light-emitting units 605 are fixedly connected to one end of the protective lens 604 close to the self-detaching lens 601. When the water flow velocity measurement radar 4 detects that the anti-fouling unit 12 is stained with dirt, it can be used The photosensitive curtain 406 is tested and verified, the electric shaft 405 is rotated, and the photosensitive curtain 406 is relaxed. The photosensitive curtain 406 falls in the direction of the limit sliding groove 407 under the action of the slider 408, blocking the anti-fouling unit 12. At this time, the light beam generated by the light-emitting unit 605 will irradiate the photosensitive curtain 406. When the self-detaching lens 601 located on the outer layer is contaminated with dirt, there will be obvious gaps in the light beam received by the photosensitive curtain 406, which can be used to determine whether close-range dirt is contaminated on the self-detaching lens 601. After the self-detaching lens 601 rupture instruction is verified twice, the rupture of the self-detaching lens 601 will be initiated, thereby increasing the accuracy of the rupture of the self-detaching lens 601. Multiple self-detaching lenses 601 and protective lenses 604 are made of colorless transparent glass to reduce the influence of the self-detaching lenses 601 and protective lenses 604 on the light beam generated by the light-emitting unit 605.

[0035] A matching sealing cover 11 is fixedly connected to the upper opening of the mounting groove 404 . A pair of finger grooves are formed on the sealing cover 11 to provide dustproof protection for the mounting groove 404 and facilitate maintenance personnel to maintain the structure inside the mounting groove 404 .

[0036] The second implementation method:

[0037] Figure 8-10The present invention shows a water flow velocity measuring radar for water conservancy monitoring, wherein a telescopic rod 7 is fixedly connected between a fixed pile 2 and a water flow velocity measuring radar 4, a water-breaking pile 9 is fixedly connected to the lower end of the water flow velocity measuring radar 4, and a floating block 10 is fixedly connected to the end of the water-breaking pile 9 away from the water flow velocity measuring radar 4. After the floating block 10 is completely immersed in the river water, the buoyancy generated will lift the water-breaking pile 9 and the water flow velocity measuring radar 4 upward. The existing water flow velocity measuring radar is waterproof, and the water flow velocity measuring radar 4 will be set at a certain height above the water surface of the river during the flood season. However, the detection effect of the water flow velocity measuring radar 4 will decrease as the height above the water surface increases, and the excessively high height of the water flow velocity measuring radar 4 will affect the detection in the dry season. In order to improve the measurement accuracy, in the present application, the height of the water flow velocity radar 4 can be set to a safe height in the dry season. When the river water enters the flood season, the buoyancy of the float 10 will lift the water flow velocity radar 4, so that the water flow velocity radar 4 always maintains a safe distance, so that the detection data of the water flow velocity radar 4 in multiple stages can be kept with high accuracy. A compression spring 8 is provided on the outer side of the telescopic rod 7, and the two ends of the compression spring 8 are respectively fixedly connected to the telescopic rod 7 and the water flow velocity radar 4, thereby increasing the stability of the water flow velocity radar 4, making it difficult for the water flow velocity radar 4 to shake too much under the influence of short-term small-range fluctuations in the water flow, thereby increasing the accuracy of the detection results.

[0038] The cross section of the water-breaking pile 9 is in the shape of a water drop, with the tip of the water drop facing the opposite direction of the water flow. The water-breaking pile 9 and the floating block 10 are both made of lightweight materials to reduce the erosion of the water flow on the water-breaking pile 9, making the structure of the water-breaking pile 9 less likely to break and fail.

[0039] In the present embodiment, through the design of the telescopic rod 7, compression spring 8, water-breaking pile 9 and floating block 10, the water flow velocity measuring radar 4 always maintains a safe distance, so that the detection data of the water flow velocity measuring radar 4 in multiple stages can maintain high accuracy, and at the same time, the stability of the water flow velocity measuring radar 4 is increased, so that the water flow velocity measuring radar 4 is not easy to shake too much under the influence of short-term small-range fluctuations in the water flow, thereby increasing the accuracy of the detection results.

[0040] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A water flow velocity measuring radar for water conservancy monitoring, comprising a fixed pile (2) installed on a dam foundation (1), a remote terminal unit (3) fixedly connected to the fixed pile (2), a water flow velocity measuring radar (4) fixedly connected to one end of the fixed pile (2) away from the dam foundation (1), and the remote terminal unit (3) is signal-connected to the water flow velocity measuring radar (4), characterized in that: The water flow velocity radar (4) comprises a radar body (401), the lower end of the radar body (401) is fixedly connected to a height detection unit (403), the side wall of the radar body (401) is fixedly connected to a flow velocity detection unit (402), and the water flow to be detected flows from the height detection unit (403) to the flow velocity detection unit (402), the side wall of the radar body (401) is fixedly connected to an anti-fouling unit (12) whose position matches that of the radar body (401), and the interior of the anti-fouling unit (12) is a sealed structure as a whole, and the anti-fouling unit (12) comprises mutually matching connection frames (5 ) and a protective lens group (6), the connecting frame (5) comprising a frame body (501), the inner wall of the frame body (501) being bored with a plurality of fixing grooves (502), the plurality of fixing grooves (502) being respectively fixedly connected with self-detaching lenses (601) matching the frame body, the fixing groove (502) being closest to the flow velocity detection unit (402) being fixedly connected with a protective lens (604), the plurality of self-detaching lenses (601) being respectively bored with a prefabricated groove (602) on one end thereof close to the flow velocity detection unit (402), and the plurality of prefabricated grooves (602) being respectively buried with electric heating wires (603).

2. A water flow velocity measuring radar for water conservancy monitoring according to claim 1, characterized in that: Inert gas is filled between a plurality of adjacent heating wires (603) and between adjacent heating wires (603) and the protective lens (604).

3. The water flow velocity measuring radar for water conservancy monitoring according to claim 1, characterized in that: The radar body (401) is provided with an installation groove (404) whose position matches that of the flow velocity detection unit (402); an electric rotating shaft (405) is rotatably connected in the installation groove (404); a photosensitive curtain (406) is wound around the electric rotating shaft (405); a pair of position-limiting sliding grooves (407) whose positions match those of the flow velocity detection unit (402) are provided on the side wall of the radar body (401); a sliding block (408) matching the position of the two position-limiting sliding grooves (407) is slidably connected in each of the two position-limiting sliding grooves (407); a connecting rod (409) is fixedly connected between the two sliding blocks (408); an end of the photosensitive curtain (406) away from the electric rotating shaft (405) is fixedly connected to the connecting rod (409); an end of the connecting rod (409) close to the flow velocity detection unit (402) is a photosensitive unit; and a plurality of light-emitting units (605) are fixedly connected to an end of the protective lens (604) close to the self-detaching lens (601).

4. The water flow velocity measuring radar for water conservancy monitoring according to claim 1, characterized in that: The plurality of self-detaching lenses (601) and the protective lenses (604) are all made of colorless transparent glass.

5. The water flow velocity measuring radar for water conservancy monitoring according to claim 3 is characterized by: A sealing cover (11) matching the mounting groove (404) is fixedly connected to the upper opening of the mounting groove (404), and a pair of finger grooves are formed on the sealing cover (11).

6. The water flow velocity measuring radar for water conservancy monitoring according to claim 1, characterized in that: A telescopic rod (7) is fixedly connected between the fixed pile (2) and the water flow velocity measuring radar (4); a water-breaking pile (9) is fixedly connected to the lower end of the water flow velocity measuring radar (4); a floating block (10) is fixedly connected to one end of the water-breaking pile (9) away from the water flow velocity measuring radar (4); and only when the floating block (10) is completely immersed in the river water will the buoyancy generated lift the water-breaking pile (9) and the water flow velocity measuring radar (4) upward.

7. A water flow velocity measuring radar for water conservancy monitoring according to claim 6, characterized in that: A compression spring (8) is sleeved on the outer side of the telescopic rod (7), and two ends of the compression spring (8) are respectively fixedly connected to the telescopic rod (7) and the water flow velocity measuring radar (4).

8. The water flow velocity measuring radar for water conservancy monitoring according to claim 6, characterized in that: The cross section of the water-breaking pile (9) is in the shape of a water drop, with the tip of the water drop facing in the opposite direction of the water flow, and the water-breaking pile (9) and the floating block (10) are both made of lightweight materials.

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