A monitoring device for air coolers in a wind tunnel of a giant generator set

Abstract

The application provides a kind of giant generator set wind tunnel inside air cooler monitoring device, including air cooler, the side of air cooler is equipped with annular guide rail, guide rail is equipped with trolley, trolley is equipped with first water receiving device, second water receiving device and power device, air cooler is equipped with sliding cleaning device, the side of air cooler is equipped with rotating device.When air cooler has no water leakage and no condensation phenomenon, first alarm and second alarm will not act.When only air cooler has water leakage, first alarm and second alarm will act accordingly due to the existence of water flow.When air cooler has condensation phenomenon and no water leakage phenomenon, first alarm in first water receiving device acts, second alarm in second water receiving device does not act, thus distinguishing the state of air cooler.Avoiding the phenomenon that generator set is full of water, leading to equipment shutdown, causing a large amount of economic loss, has great popularization value.

Description

Technical Field

[0001] This invention relates to the field of generator monitoring, and in particular to a monitoring device for the air cooler inside a wind tunnel of a giant generator set. Background Technology

[0002] In a hydroelectric turbine, each generator set has multiple air coolers evenly arranged around its circumference within a sealed wind tunnel. Cooling water flows through these air coolers. The airflow generated during generator rotation passes sequentially through the generator, air coolers, and then re-enters the generator to cool it. An oil sump is located below the generator rotor. During operation, it inevitably produces slight oil mist, which adheres to the air cooler surface. Regular cleaning is necessary to prevent affecting generator cooling efficiency. Leaks in the generator air coolers are possible during operation, requiring regular inspections. Failure to detect leaks can lead to water accumulation within the generator set, causing equipment downtime and significant economic losses. Furthermore, condensation easily forms on the air cooler surface during the humid spring season, requiring regular, time-consuming, and labor-intensive cleaning. Therefore, we propose a monitoring device for the air coolers within the wind tunnel of a giant generator set to address these issues. Summary of the Invention

[0003] This invention provides a monitoring device for air coolers inside wind tunnels of giant generator sets, solving the problem of water leakage during generator air cooler operation. This addresses the need for regular inspections, which can lead to water accumulation inside the generator set, causing equipment shutdown and significant economic losses. Furthermore, condensation easily forms on the surface of the air cooler during the humid spring season, requiring regular cleaning, a time-consuming and labor-intensive process.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a monitoring device for air cooler in wind tunnel of giant generator set, including air cooler, an annular guide rail on one side of air cooler, a trolley on the guide rail, a first water receiving device, a second water receiving device and a power device on the trolley, a sliding cleaning device on the air cooler, and a rotating device on one side of the air cooler.

[0005] In the preferred embodiment, the air cooler has multiple mounting brackets on one side and multiple guide wheels on the other side. The mounting brackets are equipped with coil springs, and the air cooler has a water-receiving trough on one side of the air outlet and a U-shaped plate on one side of the water-receiving trough.

[0006] In the preferred embodiment, the mounting bracket has a first through hole on one side, the guide wheel has a second through hole on one side, multiple guide wheels have rotating seats at their bottoms, the water receiving tank has water holes, and water pipes are provided at the bottom of the water holes.

[0007] In a preferred embodiment, the cleaning device includes a side plate, with multiple guide posts on one side of the side plate, and multiple sponges on one side of the multiple guide posts. One side of the side plate is connected to a coil spring via a steel rope, and the other side of the side plate is connected to a guide wheel via a steel rope.

[0008] In the preferred embodiment, the guide post rests against the U-shaped plate, the U-shaped plate is embedded in one side of the U-shaped plate, and a spring is provided between the guide post and the side plate.

[0009] In a preferred embodiment, the rotating device includes a gear, a rotating shaft on the gear, multiple partitions on the rotating shaft, the rotating shaft being connected to a rotating seat, and a steel rope on the guide wheel being connected to the rotating shaft.

[0010] In the preferred embodiment, the trolley includes a platform, a hollow box and multiple rollers on the platform, grooves on both sides of the guide rail, a water trough on the guide rail, the rollers abutting against the grooves, the box being connected to a first water receiving device and a second water receiving device, and a valve at the bottom of the box.

[0011] In a preferred embodiment, the first water receiving device includes a hollow water column with an arc-shaped rack on it. A water receiving arc groove is provided on one side of the arc-shaped rack, and the water receiving arc groove is connected to the water column through a third through hole. The second water receiving device includes a second water column.

[0012] In a preferred embodiment, the power unit includes a column with two rotating shafts, a sail on each rotating shaft, a sail between the sail and the column, a cylinder and two rollers on the water column, the rollers being connected to the sail via cables, the cylinder being connected to the rollers via cables, and a second spring between the rotating shafts and the column.

[0013] In the preferred embodiment, both the first water receiving device and the second water receiving device are connected to the trolley. The first water receiving device is equipped with a first water level sensor, which is connected to a first alarm. The second water receiving device is equipped with a second water level sensor, which is connected to a second alarm.

[0014] The beneficial effects of this invention are as follows: Air is blown out from the generator's main shaft and rotor; multiple air coolers are installed on the generator's outer wall; a guide rail is installed around the generator; a driving cylinder causes two sails to open under the action of a second spring, allowing the air blown out by the generator to agitate the sails, thus causing the trolley to slide along the guide rail. The second water receiving device moves to below the water hole; when the air cooler leaks water, the second water column catches the water falling from the water-receiving tank. The trolley continues to move forward; when the arc-shaped rack meshes with the gear, the rotating shaft rotates, causing the steel cables on the multiple rotating shafts to wind and rotate, causing the cleaning device to slide along the U-shaped plate, allowing the sponge to absorb water and clean the air cooler, absorbing any slight oil mist and condensation on the air cooler surface. When the cleaning device slides to one side of the air cooler, the sponge is squeezed against the side of the air cooler under the tension of the side plate, so that the sponge can drain water and the sewage can fall along the water hole onto the first water receiving device. When the air cooler leaks water, the water receiving tank catches the leaking water. When the trolley moves to the water hole, the second water receiving device catches the leaking water.

[0015] When the air cooler has no leaks or condensation, neither the first nor the second water receiving device will receive water, and neither the first nor the second alarm will activate. When only the air cooler leaks, the presence of water will cause both the first and second water receiving devices to receive water, triggering both alarms. When there is condensation but no leaks, the first alarm on the first water receiving device will activate, while the second alarm on the second water receiving device will remain inactive, thus distinguishing the air cooler's status. This prevents the generator set from becoming filled with water, leading to equipment downtime and significant economic losses. Furthermore, during the humid spring season, condensation easily forms on the air cooler surface; regular cleaning with the cleaning device avoids time-consuming and labor-intensive cleaning processes, making it a valuable tool for widespread adoption. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is an axonometric view of the overall structure of the present invention; Figure 2 This is the present invention. Figure 1 A magnified view of A in the middle; Figure 3 This is the present invention. Figure 1 A magnified view of B in the middle; Figure 4 This is another perspective axonometric view of the overall structure of the present invention; Figure 5 This is an axonometric view of the air cooler of the present invention; Figure 6 This is the present invention. Figure 5 Axonometric view of C; Figure 7 This is a partial axonometric view of the trolley of the present invention on the guide rail; Figure 8 This is an axonometric view of the vehicle of the present invention; Figure 9 This is a cross-sectional view of the vehicle of the present invention; Figure 10 This is the present invention. Figure 9 A magnified view of D; Figure 11 This is a cross-sectional view of the guide rail of the present invention; Figure 12 This is an axonometric view of the cleaning device of the present invention; Figure 13 This is the book Figure 12 A magnified view of E in the middle; Figure 14 This is the book Figure 12 Enlarged view of F; Figure 15 This is an axonometric view of the rotating device of the present invention; In the diagram: Air cooler 1; Mounting bracket 101; First through hole 102; Water receiving tank 103; U-shaped plate 104; Water hole 105; Second through hole 106; Guide wheel 107; Rotating seat 108; Trolley 2; Cart plate 201; Roller 202; Box 203; Guide rail 3; Slide 301; Water tank 302; Rotating device 4; Gear 401; Rotating shaft 402; Partition plate 403; Cleaning device 5; Side plate 501; 502 U-shaped plate; 503 guide post; 504 spring; 505 sponge; 6 coil spring; 7 first water receiving device; 701 water column; 702 arc-shaped rack; 703 water receiving arc groove; 704 third through hole; 8 second water receiving device; 801 second water column; 9 power unit; 901 column; 902 rotating shaft; 903 sail; 904 second spring; 905 cylinder; 907 rolling wheel; 908 cable. Detailed Implementation

[0017] Example 1: like Figure 1-15In this invention, a monitoring device for air coolers inside a wind tunnel of a giant generator set includes an air cooler 1. An annular guide rail 3 is provided on one side of the air cooler 1, and a trolley 2 is mounted on the guide rail 3. The trolley 2 is equipped with a first water receiving device 7, a second water receiving device 8, and a power device 9. A sliding cleaning device 5 is provided on the air cooler 1, and a rotating device 4 is provided on one side of the air cooler 1. With this structure, air is blown out from the generator's main shaft and rotor. Multiple air coolers 1 are installed on the outer wall of the generator. The guide rail 3 is installed around the generator. A drive cylinder 906 causes two sails 904 to open under the action of a second spring 905, so that the air blown out by the generator agitates the sails 904, causing the trolley 2 to slide along the guide rail 3. The second water receiving device 8 moves to below the water hole 105. When the air cooler 1 leaks water, the second water column 801 catches the water falling from the water receiving tank 103. The trolley 2 continues to move forward. When the arc-shaped rack 702 meshes with the gear 401, the rotating shaft 402 rotates, causing the steel cables on the multiple rotating shafts 402 to wind and rotate, so that the cleaning device 5 slides along the U-shaped plate 104, allowing the sponge 505 to absorb water and clean the air cooler 1, absorbing some slight oil mist and condensation on the surface of the air cooler 1. When the cleaning device 5 slides to one side of the air cooler 1, the sponge 505 is squeezed against the side of the air cooler 1 under the tension of the side plate 501, so that the sponge 505 discharges water, allowing the sewage to fall along the water hole 105 onto the first water receiving device 7. When the air cooler 1 leaks water, the water receiving tank 103 catches the leaking water. When the trolley 2 moves to below the water hole 105, the second water receiving device 8 catches the leaking water.

[0018] When air cooler 1 has no leaks or condensation, neither the first water receiving device 7 nor the second water receiving device 8 will receive water, and neither the first nor the second alarm will activate. When only air cooler 1 leaks, due to the presence of water flow, both the first and second water receiving devices 7 and 8 will receive water, and both the first and second alarms will activate. When air cooler 1 has condensation but no leaks, the first alarm on the first water receiving device 7 will activate, while the second alarm on the second water receiving device 8 will not activate, thus distinguishing the status of air cooler 1. This prevents the generator set from becoming filled with water, leading to equipment shutdown and significant economic losses. Additionally, during the humid spring season, condensation is prone to appear on the surface of air cooler 1; therefore, the cleaning device 5 should clean it regularly to avoid time-consuming and labor-intensive cleaning processes.

[0019] After the trolley 2 passes through the air cooler 1, the arc-shaped rack 702 and gear 401 do not contact each other. The cleaning device 5 rebounds under the action of the coil spring 6, so that the cleaning device 5 returns to the side of the air cooler 1. The trolley 2 slides along the circumference of the guide rail 3, so that the trolley 2 can inspect the multiple circumferential arrays of air coolers 1. When the trolley 2 needs to be stopped for maintenance, the drive cylinder 906 is used to retract the sail 904, so that the trolley 2 stops moving due to the friction on the guide rail 3, which facilitates its maintenance.

[0020] In the preferred embodiment, the air cooler 1 has multiple mounting brackets 101 on one side and multiple guide wheels 107 on the other side. The mounting brackets 101 are equipped with coil springs 6. A water-receiving trough 103 is located on the air outlet side of the air cooler 1, and a U-shaped plate 104 is located on one side of the water-receiving trough 103. With this structure, the mounting brackets 101 are used to mount the coil springs 6, and the water-receiving trough 103 is used to collect leaks when the air cooler 1 leaks. The U-shaped plate 104 is used to limit the movement of the cleaning device 5. After the trolley 2 passes through the air cooler 1, the arc-shaped rack 702 does not contact the gear 401, and the cleaning device 5 rebounds under the action of the coil springs 6, causing the cleaning device 5 to return to its original position on the side of the air cooler 1.

[0021] In a preferred embodiment, the mounting bracket 101 has a first through hole 102 on one side, the guide wheel 107 has a second through hole 106 on one side, the bottom of the multiple guide wheels 107 is provided with a rotating seat 108, the water receiving tank 103 is provided with a water hole 105, and a water pipe is provided at the bottom of the water hole 105. With this structure, the water pipe at the bottom of the water hole 105 guides leaking water or sewage.

[0022] In a preferred embodiment, the cleaning device 5 includes a side plate 501. Multiple guide posts 503 are provided on one side of the side plate 501, and multiple sponges 505 are provided on the other side of the guide posts 503. One side of the side plate 501 is connected to a coil spring 6 via a steel rope, and the other side of the side plate 501 is connected to a guide wheel 107 via a steel rope. With this structure, when the arc-shaped rack 702 meshes with the gear 401, the rotating shaft 402 rotates, causing the steel cables on the multiple rotating shafts 402 to wind and rotate, allowing the cleaning device 5 to slide along the U-shaped plate 104. This allows the sponges 505 to absorb water and clean the air cooler 1, absorbing any slight oil mist and condensation on the surface of the air cooler 1. When the cleaning device 5 slides to one side of the air cooler 1, the sponges 505 are pressed against the side of the air cooler 1 under the tension of the side plate 501, causing the sponges 505 to expel water, allowing the wastewater to fall along the water holes 105 onto the first water receiving device 7.

[0023] In the preferred embodiment, the guide post 503 abuts against the U-shaped plate 104, the U-shaped plate 502 is embedded in one side of the U-shaped plate 104, and a spring 504 is provided between the guide post 503 and the side plate 501. With this structure, the spring 504 between the guide post 503 and the side plate 501 allows the sponge 505 to remain in contact with the surface of the air cooler 1 for cleaning.

[0024] In a preferred embodiment, the rotating device 4 includes a gear 401, a rotating shaft 402 mounted on the gear 401, and multiple partitions 403 mounted on the rotating shaft 402. The rotating shaft 402 is connected to the rotating seat 108, and the steel cable on the guide wheel 107 is connected to the rotating shaft 402. With this structure, the rotating shaft 402 has multiple partitions 403, allowing the rotating device 4 to be connected to multiple guide wheels 107 via steel cables. This ensures that multiple steel cables on the cleaning device 5 can be connected to the same rotating device 4, resulting in uniform force distribution on the cleaning device 5 in the vertical direction.

[0025] In the preferred embodiment, the trolley 2 includes a platform 201, on which a hollow box 203 and multiple rollers 202 are mounted. The guide rail 3 has grooves 301 on both sides and a water trough 302 on the guide rail 3. The rollers 202 abut against the grooves 301. The box 203 is connected to a first water receiving device 7 and a second water receiving device 8. A valve is located at the bottom of the box 203. With this structure, the wastewater from the first water receiving device 7 flows into the box 203. When drainage is required, the valve at the bottom of the box 203 is activated, allowing the wastewater to flow into the water trough 302 on the guide rail 3. Workers can then extract the wastewater from the guide rail 3 for drainage, preventing the trolley 2 from stopping. This ensures the overall testing device operates normally while maintaining proper drainage.

[0026] In a preferred embodiment, the first water receiving device 7 includes a hollow water column 701, an arc-shaped rack 702 on the water column 701, a water receiving arc groove 703 on one side of the arc-shaped rack 702, and the water receiving arc groove 703 is connected to the water column 701 through a third through hole 704. The second water receiving device 8 includes a second water column 801.

[0027] In a preferred embodiment, the power unit 9 includes a column 901 with two rotating shafts 902. A sail 903 is mounted on each rotating shaft 902, and a sail 904 is positioned between the sail 903 and the column 901. A cylinder 906 and two rollers 907 are mounted on a water column 701. The rollers 907 are connected to the sail 904 via cables 908, and the cylinder 906 is connected to the rollers 907 via cables 908. A second spring 905 is positioned between the rotating shafts 902 and the column 901. With this structure, the sail 903 opens under the action of the second spring 905, causing the sail 904 to open, thus allowing the power unit 9 to be powered by the airflow from the air cooler 1. When the cylinder 906 contracts, the multiple sails 903 retract, shutting off the power unit 9. A connecting seat is provided at the connection point between the cable 908 and the sail 903, and the connecting seat slides on the sail 903.

[0028] In the preferred embodiment, both the first water receiving device 7 and the second water receiving device 8 are connected to the trolley 2. The first water receiving device 7 is equipped with a first water level sensor, which is connected to a first alarm. The second water receiving device 8 is equipped with a second water level sensor, which is connected to a second alarm. With this structure, when the air cooler 1 has no leakage or condensation, neither the first nor the second water receiving device 8 will receive water, and neither the first nor the second alarm will activate. When only the air cooler 1 leaks water, due to the presence of water flow, both the first and second water receiving devices 7 and 8 will receive water, and both the first and second alarms will activate. When the air cooler 1 has condensation but no leakage, the first alarm on the first water receiving device 7 will activate, while the second alarm on the second water receiving device 8 will not activate, thus distinguishing the state of the air cooler 1. This prevents the generator set from becoming filled with water, causing equipment shutdown and resulting in significant economic losses. Meanwhile, in the humid spring season, condensation is likely to appear on the surface of the air cooler 1. The cleaning device 5 cleans it regularly to avoid the time-consuming and laborious cleaning process.

[0029] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A monitoring device for the air cooler inside a wind tunnel of a giant generator set, characterized in that: It includes an air cooler (1), an annular guide rail (3) on one side of the air cooler (1), a trolley (2) on the guide rail (3), a first water receiving device (7), a second water receiving device (8) and a power device (9) on the trolley (2), a sliding cleaning device (5) on the air cooler (1), and a rotating device (4) on one side of the air cooler (1). The air cooler (1) has multiple mounting brackets (101) on one side and multiple guide wheels (107) on the other side. The mounting brackets (101) are equipped with coil springs (6). The air cooler (1) has a water-receiving tank (103) on one side of the air outlet and a U-shaped plate (104) on one side of the water-receiving tank (103). The mounting bracket (101) has a first through hole (102) on one side, the guide wheel (107) has a second through hole (106) on one side, the bottom of the multiple guide wheels (107) has a rotating seat (108), the water receiving tank (103) has a water hole (105), and the bottom of the water hole (105) has a water pipe; The cleaning device (5) includes a side plate (501), a plurality of guide posts (503) are provided on one side of the side plate (501), a plurality of sponges (505) are provided on one side of the plurality of guide posts (503), one side of the side plate (501) is connected to a coil spring (6) by a steel rope, and the other side of the side plate (501) is connected to a guide wheel (107) by a steel rope; The sponge (505) absorbs water and cleans the air cooler (1) to absorb some slight oil mist and condensation on the surface of the air cooler (1). When the cleaning device (5) slides to one side of the air cooler (1), the sponge (505) is squeezed against the side of the air cooler (1) under the pull of the side plate (501) so that the sponge (505) drains water so that the sewage falls along the water hole (105) onto the first water receiving device (7). When the air cooler (1) leaks water, the water receiving tank (103) catches the leaking water. When the trolley (2) moves to the water hole (105), the second water receiving device (8) catches the leaking water.

2. The monitoring device for the air cooler in a wind tunnel of a giant generator set according to claim 1, characterized in that: The guide post (503) rests against the U-shaped plate (104), the U-shaped plate (502) is embedded in one side of the U-shaped plate (104), and a spring (504) is provided between the guide post (503) and the side plate (501).

3. The monitoring device for the air cooler in a wind tunnel of a giant generator set according to claim 1, characterized in that: The rotating device (4) includes a gear (401), a rotating shaft (402) is provided on the gear (401), a plurality of partitions (403) are provided on the rotating shaft (402), the rotating shaft (402) is connected to the rotating seat (108), and the steel rope on the guide wheel (107) is connected to the rotating shaft (402).

4. The monitoring device for the air cooler in a wind tunnel of a giant generator set according to claim 1, characterized in that: The trolley (2) includes a platform (201), a hollow box (203) and multiple rollers (202) on the platform (201), a sliding groove (301) on both sides of the guide rail (3), a water trough (302) on the guide rail (3), the rollers (202) abut against the sliding groove (301), the box (203) is connected to the first water receiving device (7) and the second water receiving device (8), and a valve is provided at the bottom of the box (203).

5. The monitoring device for the air cooler in a wind tunnel of a giant generator set according to claim 1, characterized in that: The first water receiving device (7) includes a hollow water column (701), an arc-shaped rack (702) is provided on the water column (701), a water receiving arc groove (703) is provided on one side of the arc-shaped rack (702), and the water receiving arc groove (703) is connected to the water column (701) through a third through hole (704). The second water receiving device (8) includes a second water column (801).

6. The monitoring device for the air cooler in a wind tunnel of a giant generator set according to claim 1, characterized in that: The power unit (9) includes a column (901), two rotating shafts (902) on the column (901), a sail (903) on the rotating shaft (902), a sail (904) between the sail (903) and the column (901), a cylinder (906) and two rollers (907) on the water column (701), the rollers (907) are connected to the sail (904) through a cable (908), the cylinder (906) is connected to the rollers (907) through a cable (908), and a second spring (905) is provided between the rotating shaft (902) and the column (901).

7. The monitoring device for the air cooler in a wind tunnel of a giant generator set according to claim 1, characterized in that: The first water receiving device (7) and the second water receiving device (8) are both connected to the trolley (2). The first water receiving device (7) is equipped with a first water level sensor, which is connected to the first alarm. The second water receiving device (8) is equipped with a second water level sensor, which is connected to the second alarm.

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