Automatic drainage mechanism for cable trench of wind power plant

Abstract

The invention discloses an automatic drainage mechanism for a wind power plant cable trench, and relates to the technical field of cable trench drainage, the automatic drainage mechanism comprises a cable trench body, a placement plate and a balancing weight, the bottom of the cable trench body is provided with a water collection tank, the upper side of the water collection tank is provided with a water diversion channel, and the exterior of the water diversion channel is connected with a connecting groove body; extension plates are slidably connected to two sides of the placement plate, positioning mechanisms are mounted at the tail ends of the extension plates, a sealing plate is fixedly connected to the outside of the water collection tank, a through hole is formed in the outside of the sealing plate, a sliding plate is slidably connected to the inside of the sealing plate, a pull rope is fixedly connected to the bottom of the sliding plate, and a pull-back mechanism is mounted on the upper side of the sliding plate. Through intelligent and automatic drainage design, effective monitoring and timely drainage of water in the cable trench are realized, so that safety and stability of cable facilities are guaranteed, organic combination of suspended installation and an automatic drainage function of the cable facilities is realized, the drainage efficiency of the cable trench is improved, and the drainage effect of the cable trench is improved. And the safety protection capability of the cable facility is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of cable trench drainage, and in particular to an automatic drainage mechanism for a cable trench in a wind farm. Background Art

[0002] During the construction and operation of wind farms, the cable trench is an important channel for power transmission. The safety and stability of the cable facilities inside it are directly related to the operating efficiency and safety of the entire wind farm. However, since wind farms are often located in areas with relatively harsh natural environments, such as mountainous areas and seaside areas, the climatic conditions in these areas are changeable. Especially during the rainy season, a large amount of rainwater and groundwater can easily seep into the cable trench, posing a serious threat to the cable facilities. Long-term immersion in water will not only cause the insulation performance of the cable to deteriorate, but may also cause power grid accidents such as short circuits and leakage, seriously affecting the normal operation of wind farms.

[0003] Traditional cable trench drainage methods mostly rely on natural drainage or simple drainage ditch design. These methods are often powerless when faced with large amounts of rainwater or groundwater, and cannot effectively ensure a dry environment inside the cable trench. In addition, traditional drainage systems often lack intelligent monitoring and automatic drainage functions, and cannot respond to water level changes in a timely manner, resulting in low drainage efficiency. In some cases, they cannot even effectively prevent water from invading cable facilities. Therefore, in response to the above technical problems, an automatic drainage mechanism for a wind farm cable trench is proposed. Summary of the invention

[0004] The present invention provides an automatic drainage mechanism for a cable trench in a wind farm. Through an intelligent and automated drainage design, it can effectively monitor and timely discharge the water inside the cable trench, thereby ensuring the safety and stability of the cable facilities, and realizing an organic combination of the suspended installation of the cable facilities and the automatic drainage function, which not only improves the drainage efficiency of the cable trench, but also enhances the safety protection capability of the cable facilities.

[0005] The present invention is achieved through the following technical solutions:

[0006] An automatic drainage mechanism for a cable trench in a wind farm, comprising:

[0007] A cable trench body, wherein water collecting grooves are provided on both sides of the bottom of the cable trench body, a drainage mechanism is installed inside the water collecting groove, a water diversion channel is provided on the upper side of the water collecting groove, and a connecting groove body is fixedly connected to the outside of the end of the water diversion channel;

[0008] A placement plate is installed at the upper suspended part of the cable trench body, with extension plates slidably connected to both sides of the placement plate, a positioning mechanism installed at the end of the extension plate, a vertical plate fixedly connected to the upper side of the placement plate, a drainage hole is opened on the outside of the vertical plate, a drainage trough body is fixedly connected to the outside of the drainage hole, and the drainage trough body is abutted against the connection trough body;

[0009] A counterweight block is slidably connected to the bottom of the cable trench body, a lifting mechanism is installed on the outside of the counterweight block, a sealing plate is fixedly connected to the outside of the water collecting trough, and the sealing plate is a hollow structure, a through hole is opened on the outside of the sealing plate, a slide plate is slidably connected to the inside of the sealing plate, a pull rope is fixedly connected to the bottom of the slide plate, and the pull rope passes through the sealing plate and is fixedly connected to one side of the counterweight block, and a pull-back mechanism is installed on the upper side of the slide plate.

[0010] Preferably, the drainage mechanism includes a first liquid level sensor, a water pump and a drain pipe, the first liquid level sensor is fixedly connected to the outer surface of the inner wall of the water collecting tank, the water pump is fixedly connected to the inside of the water collecting tank, the drain pipe and the water pump are fixedly connected, and the end of the drain pipe passes through the soil layer of the cable trench body and extends to the outside.

[0011] Preferably, mounting grooves are provided on both sides of the placement plate, a slider is slidably connected inside the mounting groove, and the extension plate and the slider are fixedly connected, a spring is fixedly connected inside the mounting groove, and the spring and the slider are fixedly connected.

[0012] Preferably, the positioning mechanism includes a slot and a stopper, the slot is opened on the inner side of the cable trench body, the stopper is fixedly connected to the lower side of the end of the extension plate, and the stopper abuts against the inner side of the slot.

[0013] Preferably, a second liquid level sensor is fixedly connected to the outside of the vertical plate.

[0014] Preferably, a pulley is fixedly connected to the bottom of the counterweight block, and the pulley is fixedly connected to the inner bottom of the cable trench body.

[0015] Preferably, a mounting piece is fixedly connected to the upper side of the counterweight block, an outer portion of the mounting piece is rotatably connected to a diagonal support rod, and an end of the diagonal support rod is rotatably connected to the outer portion of the support block, and a connecting piece is rotatably connected at the intersection of the two groups of diagonal support rods.

[0016] Preferably, the lifting mechanism includes a fixed plate, a driving motor, a rotating rod and a steel cable, the fixed plate is fixedly connected to the bottom of the cable trench body, the driving motor is fixedly connected to the outside of the fixed plate, the rotating rod and the driving motor are fixedly connected, the steel cable is fixedly connected to both sides of the rotating rod, and the steel cable and the counterweight block are fixedly connected.

[0017] Preferably, the pull-back mechanism includes a fixed block and a tension spring, the fixed block is fixedly connected to the inner side of the cable trench body, and the fixed block is installed just above the sealing plate, and the tension spring is fixedly connected between the slide plate and the fixed block.

[0018] Preferably, a fan and a dehumidifier are fixedly connected to the inner side of the cable trench body, and the fan is installed on the inner upper part of the cable trench body.

[0019] The technical solution of the present invention has at least the following beneficial effects:

[0020] 1. The wind farm cable trench automatic drainage mechanism automatically pops out and engages with the card slot under the push of the spring to complete the positioning of the placement plate, so that the placement plate is located in the suspended part inside the cable trench body, which not only achieves the effect of stable installation of cable facilities, but also avoids direct contact between cable facilities and water bodies, thereby ensuring the insulation level and operation stability, and avoiding power grid accidents.

[0021] 2. The wind farm cable trench automatic drainage mechanism can automatically operate the drive motor to retract the steel cable when a lot of water enters the cable trench, pulling the counterweights on both sides to retract toward the center, so that the placement plate moves upward as a whole, and the installed cable facilities can be lifted upward and away from the water level line to achieve effective protection. The water on the upper side of the placement plate can also be discharged through the drainage holes, avoiding direct contact between the cable facilities and the water.

[0022] 3. The automatic drainage mechanism of the cable trench in the wind farm, when the two sets of counterweights move toward the center, pulling the pull rope can drive the slide plate to slide downward to automatically open the through hole for drainage. When most of the water inside the cable trench is discharged, the two sets of counterweights are reset under the action of gravity, and the pull rope can be released. At this time, the slide plate will be pulled up again under the drive of the tension spring to seal and cover the through hole, ensuring the sealing of the water collection tank under normal use, facilitating its independent drainage, and at the same time, a part of the water entering the cable trench can be reserved, which can have a heat dissipation effect of air cooling for the cable facilities on the top. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of an automatic drainage mechanism for a cable trench in a wind farm proposed by the present invention;

[0024] Figure 2 It is a schematic diagram of the local structure of the present invention;

[0025] Figure 3 for Figure 1 A magnified view of middle;

[0026] Figure 4 for Figure 2Enlarged view of middle B;

[0027] Figure 5 for Figure 1 Enlarged view of middle C;

[0028] Figure 6 for Figure 1 Enlarged view of middle D;

[0029] Figure 7 for Figure 1 Enlarged view of E in the middle;

[0030] In the figure: 1. cable trench body; 2. water collecting trough; 3. placement plate; 4. installation groove; 5. extension plate; 6. slider; 7. spring; 8. slot; 9. stop block; 10. vertical plate; 11. drainage hole; 12. drainage trough body; 13. water diversion channel; 14. connecting trough body; 15. first liquid level sensor; 16. water pump; 17. drainage pipe; 18. second liquid level sensor; 19. counterweight; 20. pulley; 21. mounting part; 22. diagonal support rod; 23. connecting part; 24. fixing plate; 25. driving motor; 26. rotating rod; 27. steel cable; 28. sealing plate; 29. ​​through hole; 30. slide plate; 31. pull rope; 32. fixing block; 33. tension spring. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1

[0033] See also Figure 1-4 The present invention proposes an automatic drainage mechanism for a cable trench in a wind farm, comprising a cable trench body 1, a placement plate 3 and a counterweight 19, and the inner wall of the cable trench body is waterproofed, and water collecting troughs 2 are provided on both sides of the bottom of the cable trench body 1, and the water collecting trough 2 can collect and discharge the water inside the cable trench, and a drainage mechanism is installed inside the water collecting trough 2, and a water diversion channel 13 is provided on the upper side of the water collecting trough 2, and the end of the water diversion channel 13 is fixedly connected to a connecting trough body 14 on the outside.

[0034] The placement plate 3 is installed in the upper suspended part of the cable trench body 1, which is convenient for separating the cable facilities from the water at the bottom. Extension plates 5 are slidably connected to both sides of the placement plate 3. The extension plates 5 are arranged so that the diagonal support rods 22 at the bottom can prop up the placement plate. A positioning mechanism is installed at the end of the extension plate 5. A vertical plate 10 is fixedly connected to the upper side of the placement plate 3. A drainage hole 11 is opened on the outside of the vertical plate 10. A drainage trough body 12 is fixedly connected to the outside of the drainage hole 11, and the drainage trough body 12 is abutted against the connecting trough body 14, which is convenient for discharging the moisture entering the top of the placement plate 3.

[0035] The drainage mechanism includes a first liquid level sensor 15, a water pump 16 and a drainage pipe 17. The first liquid level sensor 15 is fixedly connected to the outer surface of the inner wall of the water collecting tank 2, the water pump 16 is fixedly connected to the inside of the water collecting tank 2, the drainage pipe 17 and the water pump 16 are fixedly connected, and the end of the drainage pipe 17 passes through the soil layer of the cable trench body 1 and extends to the outside. The water collected in the water collecting tank 2 can be discharged by operating the water pump 16.

[0036] Installation grooves 4 are provided on both sides of the placement plate 3, and a slider 6 is slidably connected inside the installation groove 4, and the extension plate 5 and the slider 6 are fixedly connected. A spring 7 is fixedly connected inside the installation groove 4, and the spring 7 and the slider 6 are fixedly connected. The positioning mechanism includes a card slot 8 and a stop block 9. The card slot 8 is provided on the inner side of the cable trench body 1, and the stop block 9 is fixedly connected to the lower side of the end of the extension plate 5, and the stop block 9 is against the inner side of the card slot 8. By installing the spring 7, the stop block 9 can be automatically popped out and engaged with the card slot 8 for positioning.

[0037] The working principle of an automatic drainage mechanism for a cable trench in a wind farm based on the first embodiment is that when the cable facility is installed inside the cable trench, it can be installed above the placement plate 3. At this time, the placement plate 3 will move downward under the force, and since extension plates 5 connected to the springs 7 are installed on both sides of the placement plate 3, and a stop block 9 is installed at the bottom of the end of the extension plate 5, the stop block 9 will slide downward against the inner wall of the cable trench body 1 until it slides to the position of the card slot 8. The stop block 9 can be automatically popped out and engaged with the card slot 8 under the push of the spring 7, completing the positioning of the placement plate 3, so that the placement plate 3 is located in the suspended position inside the cable trench body 1, which not only realizes The effect of stable installation of cable facilities is achieved, and a larger area at the bottom of the cable trench can be preset for drainage, avoiding direct contact between the cable facilities and the water body, thereby ensuring the insulation level and operation stability, and avoiding power grid accidents. When rainwater enters, and when groundwater enters the inner side of the vertical plate 10, it can be discharged through the drainage hole 11, and when the block 9 abuts against the slot 8, the drainage trough body 12 will be connected to the connecting trough body 14, and the water on the inner side of the floor vertical plate 10 can be drained to the water diversion channel 13 through the drainage trough body 12, so that it can flow into the water collecting tank 2, and then the water pump 16 can be operated to discharge the drained water out of the cable trench.

[0038] Embodiment 2

[0039] See also Figure 1-5 Based on the first embodiment, a second liquid level sensor 18 is fixedly connected to the outside of the vertical plate 10, and the second liquid level sensor 18 can automatically sense the surrounding liquid level. The counterweight block 19 is slidably connected to the bottom of the cable trench body 1. A lifting mechanism is installed on the outside of the counterweight block 19. A pulley 20 is fixedly connected to the bottom of the counterweight block 19, and the pulley 20 is fixedly connected to the inner bottom of the cable trench body 1. The sliding connection of the counterweight block 19 can be achieved through the pulley 20.

[0040] The upper side of the counterweight block 19 is fixedly connected with a mounting member 21, the outside of the mounting member 21 is rotatably connected with an oblique support rod 22, and the end of the oblique support rod 22 is rotatably connected to the outside of the support block 9, and a connecting member 23 is rotatably connected at the intersection of the two groups of oblique support rods 22.

[0041] The lifting mechanism includes a fixed plate 24, a driving motor 25, a rotating rod 26 and a steel cable 27. The fixed plate 24 is fixedly connected to the bottom of the cable trench body 1, the driving motor 25 is fixedly connected to the outside of the fixed plate 24, the rotating rod 26 and the driving motor 25 are fixedly connected, the steel cable 27 is fixedly connected to both sides of the rotating rod 26, and the steel cable 27 and the counterweight block 19 are fixedly connected.

[0042] In this embodiment, if more water enters the cable trench, when the water level rises and enters the vertical plate 10 through the drainage hole 11, it can be detected by the second liquid level sensor 18. When the second liquid level sensor 18 monitors the water level, the drive motor 25 can be automatically operated to rotate the rotating rod 26, so that the steel cable 27 can be wound and contracted, and the counterweight blocks 19 on both sides are pulled to contract toward the center, so that the two groups of crossed diagonal support rods 22 installed on the upper sides of the two groups of counterweight blocks 19 can be brought close to each other, thereby driving the extension plate 5 to slide inward, and at the same time driving the stop block 9 to separate from the slot 8, and moving the placement plate 3 upward as a whole, so that the installed cable facilities can be lifted upward and away from the water level line, so as to achieve effective protection, and the water on the upper side of the placement plate 3 can also be discharged through the drainage hole 11, avoiding direct contact between the cable facilities and the water.

[0043] Embodiment 3

[0044] See also Figure 1-7 Based on the first and second embodiments, a sealing plate 28 is fixedly connected to the outside of the water collection tank 2, and the sealing plate 28 is a hollow structure. A through hole 29 is opened on the outside of the sealing plate 28. A slide plate 30 is slidably connected to the inside of the sealing plate 28. A pull rope 31 is fixedly connected to the bottom of the slide plate 30, and the pull rope 31 passes through the sealing plate 28 and is fixedly connected to one side of the counterweight block 19. A pull-back mechanism is installed on the upper side of the slide plate 30.

[0045] The pull-back mechanism includes a fixed block 32 and a tension spring 33 . The fixed block 32 is fixedly connected to the inner side of the cable trench body 1 , and is installed just above the sealing plate 28 . The tension spring 33 is fixedly connected between the slide plate 30 and the fixed block 32 .

[0046] A fan 34 and a dehumidifier 35 are fixedly connected to the inner side of the cable trench body 1, and the fan 34 is installed on the inner upper part of the cable trench body 1. After drainage is completed, the fan 34 and the dehumidifier 35 can be operated to remove the humid air in the cable trench body 1 to ensure the normal operation of the cable facilities.

[0047] In the present embodiment, when the two groups of counterweights 19 move toward the center, the pull rope 31 connected to one side of the counterweight 19 will drive the slide plate 30 to slide downward inside the sealing plate 28, and the through hole 29 will be automatically opened. The water inside the cable trench body 1 will directly flow into the sump 2 through the through hole 29. At this time, the water pump 16 can be operated to discharge the water inside the cable trench body 1, so that the water level inside the cable trench will drop rapidly. When most of the water inside the cable trench is discharged, the drive motor 25 is reversed. At this time, under the action of the gravity of the cable facilities and the placement plate 3, the placement plate 3 will be pressed downward, so that the abutment block 9 will be abutted against the slot 8 again, completing the suspended positioning installation of the placement plate 3. When the plate 30 slides downward, the tension spring 33 will be stretched. When the placement plate 3 moves downward, the two sets of counterweights 19 will also reset and move to both sides due to the force, and the pull rope 31 can be released. At this time, the slide plate 30 will be pulled up again under the drive of the tension spring 33 to seal and cover the through hole 29, thereby preventing the water collected by the water channel 13 from entering the cable trench through the through hole 29, ensuring the sealing of the water collection tank 2 under normal use, facilitating its independent drainage, and improving the overall drainage processing capacity. At the same time, the slide plate 30 that blocks the through hole 29 can also reserve a part of the water entering the cable trench, which can have a heat dissipation effect of air cooling on the cable facilities on the top, thereby achieving functional diversity.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic drainage mechanism for a cable trench in a wind farm, characterized in that: include A cable trench body (1), wherein water collecting grooves (2) are provided on both left and right sides of the bottom of the cable trench body (1), a drainage mechanism is installed inside the water collecting groove (2), a water diversion channel (13) is provided on the upper side of the water collecting groove (2), and a connecting groove body (14) is fixedly connected to the outside of the end of the water diversion channel (13); A placement plate (3) is installed at an upper suspended portion of a cable trench body (1), with extension plates (5) slidably connected to both sides of the placement plate (3), a positioning mechanism being installed at the end of the extension plate (5), a vertical plate (10) being fixedly connected to the upper side of the placement plate (3), a drainage hole (11) being provided on the outside of the vertical plate (10), a drainage trough body (12) being fixedly connected to the outside of the drainage hole (11), and the drainage trough body (12) and the connection trough body (14) being in contact with each other; A counterweight (19) is slidably connected to the bottom of the cable trench body (1), a lifting mechanism is installed on the outside of the counterweight (19), a sealing plate (28) is fixedly connected to the outside of the water collecting trough (2), and the sealing plate (28) is a hollow structure, a through hole (29) is opened on the outside of the sealing plate (28), a slide plate (30) is slidably connected to the inside of the sealing plate (28), a pull rope (31) is fixedly connected to the bottom of the slide plate (30), and the pull rope (31) passes through the sealing plate (28) and is fixedly connected to one side of the counterweight (19), and a pull-back mechanism is installed on the upper side of the slide plate (30).

2. The wind farm cable trench automatic drainage mechanism according to claim 1, characterized in that: The drainage mechanism comprises a first liquid level sensor (15), a water pump (16) and a drainage pipe (17); the first liquid level sensor (15) is fixedly connected to the outer surface of the inner wall of the water collecting tank (2); the water pump (16) is fixedly connected to the inside of the water collecting tank (2); the drainage pipe (17) and the water pump (16) are fixedly connected, and the end of the drainage pipe (17) passes through the soil layer of the cable trench body (1) and extends to the outside.

3. The wind farm cable trench automatic drainage mechanism according to claim 1, characterized in that: The placement plate (3) is provided with mounting grooves (4) on both sides, the mounting grooves (4) are slidably connected with sliders (6) inside, and the extension plate (5) and the sliders (6) are fixedly connected, the mounting grooves (4) are fixedly connected with springs (7), and the springs (7) and the sliders (6) are fixedly connected.

4. The wind farm cable trench automatic drainage mechanism according to claim 1, characterized in that: The positioning mechanism comprises a card slot (8) and a stop block (9), wherein the card slot (8) is arranged on the inner side of the cable trough body (1), and the stop block (9) is fixedly connected to the lower side of the end of the extension plate (5), and the stop block (9) is pressed against the inner side of the card slot (8).

5. The wind farm cable trench automatic drainage mechanism according to claim 1, characterized in that: A second liquid level sensor (18) is fixedly connected to the outside of the vertical plate (10).

6. The wind farm cable trench automatic drainage mechanism according to claim 1, characterized in that: The bottom of the counterweight block (19) is fixedly connected to a pulley (20), and the pulley (20) is fixedly connected to the inner bottom of the cable trench body (1).

7. The wind farm cable trench automatic drainage mechanism according to claim 4, characterized in that: The upper side of the counterweight block (19) is fixedly connected to a mounting member (21), the outside of the mounting member (21) is rotatably connected to an oblique support rod (22), and the end of the oblique support rod (22) is rotatably connected to the outside of the support block (9), and a connecting member (23) is rotatably connected at the intersection of the two groups of oblique support rods (22).

8. The wind farm cable trench automatic drainage mechanism according to claim 1, characterized in that: The lifting mechanism comprises a fixed plate (24), a driving motor (25), a rotating rod (26) and a steel cable (27); the fixed plate (24) is fixedly connected to the bottom of the cable trough body (1); the driving motor (25) is fixedly connected to the outside of the fixed plate (24); the rotating rod (26) and the driving motor (25) are fixedly connected; the steel cable (27) is fixedly connected to both sides of the rotating rod (26); and the steel cable (27) and the counterweight (19) are fixedly connected.

9. The wind farm cable trench automatic drainage mechanism according to claim 1, characterized in that: The pull-back mechanism comprises a fixed block (32) and a tension spring (33); the fixed block (32) is fixedly connected to the inner side of the cable trough body (1), and the fixed block (32) is installed just above the sealing plate (28); the tension spring (33) is fixedly connected between the slide plate (30) and the fixed block (32).

10. The wind farm cable trench automatic drainage mechanism according to claim 1, characterized in that: A fan (34) and a dehumidifier (35) are fixedly connected to the inner side of the cable trench body (1), and the fan (34) is installed on the inner upper layer of the cable trench body (1).

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