Integrated primary frequency modulation active testing device for hydropower station

Abstract

The utility model relates to the technical field of hydropower station test, especially, a kind of integrated hydropower station primary frequency modulation initiative testing device, it reduces the difficulty of manual operation, improves the cleaning efficiency of cooling fan and air inlet screen, ensures the heat dissipation effect;Including: test cabinet, test cabinet support setting is on ground, test cabinet inside is provided with hydropower station primary frequency modulation test module;Air inlet screen, sliding cover is set in the back of test cabinet;Cooling fan, sliding is set in test cabinet inside, and it is communicated with air inlet screen;Transmission assembly, it is set on test cabinet, for the action of linkage air inlet screen and cooling fan;Cleaning assembly, it is set on the lateral wall of test cabinet, for cleaning air inlet screen;Wherein, transmission assembly includes: outer push block, setting is in air inlet screen top end;Inner push block, setting is in air inlet screen top end;Guide slide strip, fixed mounting is in test cabinet top end;Driving rack, sliding sleeve setting is set on guide slide strip.

Description

Technical Field

[0001] This utility model relates to the technical field of hydropower station testing, and in particular to an integrated active testing device for primary frequency regulation of hydropower stations. Background Technology

[0002] Primary frequency regulation is an important means for hydropower stations to quickly adjust the output of their generating units based on automatic changes in the grid frequency, in order to suppress frequency fluctuations and restore the grid frequency to its rated value as soon as possible.

[0003] Currently, the testing of primary frequency regulation performance in hydropower stations mainly relies on two methods: on-site measurement and simulation testing. On-site measurement involves observing the frequency regulation response of the generating units by creating load disturbances during the actual operation of the hydropower station. During primary frequency regulation testing in hydropower stations, the testing equipment needs to operate continuously for extended periods, generating a significant amount of heat from its internal electronic components and modules. If heat dissipation is not timely and effective, the internal temperature of the equipment will rise, affecting the performance and lifespan of electronic components, and may even cause malfunctions, impacting the accuracy and reliability of the test. Currently, the heat dissipation design of some testing equipment is often inadequate, resulting in low heat dissipation efficiency and failing to meet the requirements of long-term stable operation.

[0004] After prolonged use, the air intake grille of the testing device easily accumulates dust and debris, leading to poor airflow and further affecting heat dissipation. Existing cleaning methods mostly rely on manual cleaning, which is not only inefficient but also makes it difficult to ensure thorough cleaning. Utility Model Content

[0005] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this utility model provides an integrated active testing device for primary frequency regulation of hydropower stations.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model discloses an integrated active testing device for primary frequency regulation in a hydropower station, comprising:

[0008] The test cabinet is supported on the ground and contains a primary frequency regulation test module for hydropower stations.

[0009] The air intake grille, with a sliding cover, is mounted on the back of the test cabinet;

[0010] The cooling fan is slidably installed inside the test cabinet and is connected to the air intake grille;

[0011] The transmission assembly, mounted on the test cabinet, is used to link the movement of the air intake grille and the cooling fan.

[0012] The cleaning component, located on the outer wall of the test cabinet, is used to clean the air intake grille.

[0013] The transmission components include:

[0014] An outward push block is located at the top of the air intake grille;

[0015] An inward pusher block is located at the top of the air intake grille;

[0016] Guide rails are fixedly installed on the top of the test cabinet;

[0017] The drive rack and pinion, and the sliding assembly are mounted on the guide rail;

[0018] The driven impact rod is fixedly connected to the drive rack and engages with the outer push block and the inner push block in an impact engagement.

[0019] The first gear is rotatably mounted on the top of the test cabinet and meshes with the drive rack;

[0020] The second gear is rotatably mounted inside the top of the test cabinet and is coaxial with the first gear.

[0021] The driven rack is fixedly connected to the cooling fan, and the driven rack meshes with the second gear;

[0022] The support slide is fixedly installed on the inner side wall of the test cabinet. The support slide is used to support the cooling fan, and the cooling fan slides in a sliding fit with the support slide.

[0023] Furthermore, the test cabinet is equipped with guide strips that slide against the air intake grille.

[0024] Furthermore, multiple rubbing blocks are arranged on the inner wall of the guide strip, and the rubbing blocks correspond one-to-one with the slots of the air intake grille.

[0025] Furthermore, two hanging sleeves are installed at the top of the test cabinet, and a hanging guide rod is slidably inserted into each hanging sleeve. The hanging guide rod is fixedly connected to the cooling fan.

[0026] Furthermore, buffer pads are provided at the impact ends of the driven impact rod and the outer and inner push blocks.

[0027] Furthermore, the cleaning components include:

[0028] The adjustment motor is fixedly installed on the outer wall of the test cabinet, and a screw is provided at the output end of the adjustment motor to rotate.

[0029] The threaded slider is slidably mounted on the outer wall of the test cabinet, and the threaded slider is threadedly engaged with the screw.

[0030] An electric brush roller, rotatably mounted on the top of a threaded slider, is used to sweep and clean the pulled-out air intake screen.

[0031] Furthermore, a guide post is provided on the outer wall of the test cabinet, and a guide bearing block is slidably sleeved on the guide post. The bottom end of the guide bearing block is in rotatable cooperation with the electric roller.

[0032] Furthermore, the guide post and the screw are parallel to each other.

[0033] In the above technical solution, the integrated active testing device for primary frequency regulation of hydropower stations provided by this utility model has the following beneficial effects:

[0034] When cleaning the cooling fan and air intake grille is required, the cooling fan can be automatically pushed out of the test cabinet by simply pulling and pushing the air intake grille using the transmission component. This allows operators to clean the cooling fan and air intake grille more conveniently and thoroughly, avoiding the problem of incomplete cleaning caused by space constraints during manual cleaning, and greatly improving cleaning efficiency. Compared with the traditional method that requires complicated manual disassembly and cleaning of the cooling fan and air intake grille separately, this device achieves automated linkage operation through the transmission component, reducing the difficulty and workload of manual operation. Operators only need to perform a simple push and pull action on the air intake grille to complete the cleaning preparation work, improving work efficiency. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the embodiments will be briefly described below.

[0036] Figure 1 This is a schematic diagram of the structure of this utility model;

[0037] Figure 2 This is a schematic diagram of the rear-view axle structure of this utility model;

[0038] Figure 3 This is an enlarged structural diagram of the air intake grille;

[0039] Figure 4 This is a schematic diagram of the cooling fan's installation structure;

[0040] Figure 5 This is an enlarged structural diagram of the cleaning component;

[0041] The following are labels in the attached diagram: 1. Test cabinet; 11. Air intake grille; 12. Cooling fan; 21. Outward push block; 22. Inward push block; 23. Guide slide bar; 24. Drive rack; 25. Driven impact rod; 26. First gear; 27. Second gear; 28. Driven rack; 29. ​​Support slide; 2a. Guide slide bar; 2b. Hanging sleeve; 2c. Hanging guide rod; 3. Cleaning assembly; 31. Adjusting motor; 32. Screw; 33. Threaded slider; 34. Electric brush roller; 35. Guide column; 36. Guide bearing block. Detailed Implementation

[0042] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0043] See Figure 1-5 As shown;

[0044] An integrated active frequency regulation testing device for a hydropower station according to an embodiment of this utility model includes:

[0045] Test cabinet 1 is supported and installed on the ground. Test cabinet 1 contains a primary frequency regulation test module for hydropower stations.

[0046] The air intake grille 11 is mounted on the back of the test cabinet 1 with a sliding cover;

[0047] Cooling fan 12 is slidably installed inside test cabinet 1 and communicates with air intake mesh plate 11;

[0048] A transmission component, mounted on the test cabinet 1, is used to link the operation of the air intake grille 11 and the cooling fan 12.

[0049] The cleaning component 3 is installed on the outer wall of the test cabinet 1 and is used to clean the air intake mesh plate 11.

[0050] The transmission components include:

[0051] The push block 21 is located at the top of the air intake grille 11;

[0052] An inward pusher 22 is located at the top of the air intake grille 11;

[0053] Guide slide 23 is fixedly installed at the top of test cabinet 1;

[0054] The drive rack 24 and the sliding assembly are mounted on the guide slide 23;

[0055] The driven impact rod 25 is fixedly connected to the drive rack 24 and engages with the outer push block 21 and the inner push block 22 in an impact engagement.

[0056] The first gear 26 is rotatably mounted on the top of the test cabinet 1, and the first gear 26 meshes with the drive rack 24;

[0057] The second gear 27 is rotatably mounted inside the top of the test cabinet 1 and is coaxial with the first gear 26.

[0058] Driven rack 28 is fixedly connected to cooling fan 12, and driven rack 28 meshes with second gear 27;

[0059] The support slide 29 is fixedly installed on the inner side wall of the test cabinet 1. The support slide 29 is used to support the cooling fan 12. The cooling fan 12 slides in conjunction with the support slide 29.

[0060] By adopting the above technical solution, when the integrated hydropower station primary frequency regulation active testing device is working normally, the cooling fan 12 is in the position retracted into the test cabinet 1, and the air intake mesh plate 11 is tightly covered on the back of the test cabinet 1. At this time, when the cooling fan 12 is started, outside air can smoothly enter the test cabinet 1 through the air intake mesh plate 11 to dissipate heat from the electronic components and modules that generate a lot of heat due to long-term continuous operation, ensuring that the testing device operates stably in a suitable temperature environment. When the testing device has been running for a period of time, and a certain amount of dust and debris accumulates on the air intake mesh plate 11, affecting the air intake effect, or when the cooling fan 12 also needs to be cleaned, the operator pulls the air intake mesh plate 11 outward. During the sliding process, the air intake mesh plate 11... The inner push block 22 at its top will gradually approach the driven impact rod 25; when the inner push block 22 hits the driven impact rod 25, it will generate an outward pushing force on the driven impact rod 25; since the driven impact rod 25 is fixedly connected to the drive rack 24, this pushing force will drive the drive rack 24 to slide outward along the guide slide 23; the drive rack 24 meshes with the first gear 26, and its sliding will drive the first gear 26 to rotate; since the second gear 27 is coaxial with the first gear 26, the second gear 27 will also rotate; the second gear 27 meshes with the driven rack 28, and its rotation will drive the driven rack 28 to slide; and the driven rack 28 is fixedly connected to the cooling fan 12, and the cooling fan 12 is slidably engaged with the support slide 29, so The sliding of the driven rack 28 will push the cooling fan 12 out of the test cabinet 1, making it easier for operators to clean the cooling fan 12 and the air intake grille 11. After cleaning the cooling fan 12 and the air intake grille 11, the operator will push the air intake grille 11 inward. During the inward sliding of the air intake grille 11, the outer push block 21 at its top will collide with the driven impact rod 25, generating an inward pushing force on the driven impact rod 25. This pushing force, through the transmission of the driven impact rod 25, the drive rack 24, the first gear 26, the second gear 27, and the driven rack 28, will push the cooling fan 12 into the test cabinet 1, ultimately restoring the cooling fan 12 and the air intake grille 11 to their initial normal heat dissipation state. When cleaning is required... When cleaning the cooling fan 12 and the air intake screen 11, the cooling fan 12 can be automatically pushed out of the test cabinet 1 by simply pulling and pushing the air intake screen 11 using the transmission component. This allows operators to clean the cooling fan 12 and the air intake screen 11 more conveniently and comprehensively, avoiding the problem of incomplete cleaning caused by space constraints during manual cleaning, and greatly improving cleaning efficiency. Compared with the traditional method that requires manual disassembly and cleaning of the cooling fan 12 and the air intake screen 11 separately, this device realizes automated linkage operation through the transmission component, reducing the difficulty and workload of manual operation. Operators only need to perform a simple push and pull action on the air intake screen 11 to complete the cleaning preparation work, thus improving work efficiency.

[0061] As a preferred embodiment of the above technical solution, such as Figure 2 As shown, the test cabinet 1 is equipped with a guide strip 2a, which slides and fits in contact with the air intake grille 11.

[0062] In this embodiment, the guide strip 2a slides and adheres to the air intake grille 11, providing precise guidance for the sliding of the air intake grille 11. During the repeated opening and closing of the air intake grille 11, it can ensure that it always slides in the correct direction, avoiding collisions or friction between the air intake grille 11 and other components of the test cabinet 1 due to deviation in the sliding direction, thus improving the stability of the device operation. During the sliding of the air intake grille 11, the adhesion of the guide strip 2a can effectively reduce the shaking of the air intake grille 11, making its sliding more stable.

[0063] As a preferred embodiment of the above technical solution, such as Figure 4 As shown, multiple rubbing blocks are arranged on the inner wall of the guide strip 2a, and the rubbing blocks correspond one-to-one with the slots of the air intake grille 11.

[0064] In this embodiment, during the normal push-pull operation of the air intake grille 11, the wiping block on the guide strip 2a can automatically clean the strip groove of the air intake grille 11. Compared with the traditional manual cleaning method, it greatly saves time and manpower and improves cleaning efficiency. As long as the air intake grille 11 is sliding, the wiping block will continue to play a role in cleaning the strip groove. It can remove newly accumulated dust and debris in time, avoid dust from accumulating in the strip groove for a long time, ensure the air intake of the air intake grille 11 is unobstructed, and thus improve the heat dissipation efficiency of the entire testing device.

[0065] As a preferred embodiment of the above technical solution, such as Figure 4 As shown, two hanging sleeves 2b are installed at the top of the inside of the test cabinet 1. A hanging guide rod 2c is slidably inserted in each hanging sleeve 2b. The hanging guide rod 2c is fixedly connected to the cooling fan 12.

[0066] In this embodiment, the cooperation between the hanging sleeve 2b and the hanging guide rod 2c provides a clear guide for the movement of the cooling fan 12. The hanging guide rod 2c can only slide in a straight line within the hanging sleeve 2b, which ensures that the cooling fan 12 can only move in a predetermined direction under the drive of the transmission assembly. This avoids swaying or deviation of the cooling fan 12 during movement, ensuring the smoothness of the cooling fan 12's movement. The combination of the two hanging sleeves 2b and the hanging guide rod 2c increases the support points of the cooling fan 12, improving the strength of the entire support structure. During long-term operation of the testing device, it can better withstand various forces acting on the cooling fan 12, reducing cooling fan 12 malfunctions caused by loosening or damage to the support structure, and extending the service life of the cooling fan 12.

[0067] As a preferred embodiment of the above technical solution, the impact ends of the driven impact rod 25 and the outer push block 21 and inner push block 22 are provided with buffer rubber pads.

[0068] In this embodiment, during the impact of the driven impact rod 25 with the outer push block 21 and the inner push block 22, without a buffer pad, the impact would generate a large impact force, directly acting on the impacting components. Long-term, repeated impacts would cause wear, deformation, and even cracks on the surfaces of the driven impact rod 25, the outer push block 21, and the inner push block 22, affecting the service life of these components. The buffer pad absorbs and disperses the impact force during impact, reducing direct impact on the impacting components, thereby reducing mechanical wear and extending the service life of the components. The impact process generates noise, especially without buffering measures; direct impact between metal components produces a sharp, piercing sound. The buffer pad has good energy absorption characteristics, converting some of the impact energy into its own elastic deformation energy during impact, thus reducing the noise generated by the impact. This improves the working environment and reduces noise interference to operators.

[0069] As a preferred embodiment of the above technical solution, such as Figure 5 As shown, the cleaning component 3 includes:

[0070] The adjusting motor 31 is fixedly installed on the outer wall of the test cabinet 1, and the output end of the adjusting motor 31 is provided with a screw 32 for rotation.

[0071] The threaded slider 33 is slidably mounted on the outer wall of the test cabinet 1, and the threaded slider 33 is threadedly engaged with the screw 32.

[0072] An electric brush roller 34 is rotatably mounted on the top of the threaded slider 33 and is used to sweep and clean the pulled-out air intake mesh plate 11.

[0073] In this embodiment, when the air intake screen 11 needs to be cleaned, it is first pulled out from the back of the test cabinet 1 a certain distance, exposing it to the working range of the cleaning assembly 3. At this time, the adjusting motor 31, screw 32, threaded slider 33, and electric brush roller 34 are initially stationary. The adjusting motor 31 is started, and its output drives the screw 32 to rotate. Since the threaded slider 33 is slidably mounted on the outer wall of the test cabinet 1 and threadedly engaged with the screw 32, according to the principle of threaded transmission, the rotation of the screw 32 will cause the threaded slider 33 to move linearly along the axial direction of the screw 32. By controlling the forward or reverse rotation of the adjusting motor 31, the direction of movement of the threaded slider 33 can be controlled, causing it to move closer to or further away from the air intake screen 11. As the threaded slider 33 moves, the electric brush roller 34 mounted on the top of the threaded slider 33 moves together. When the electric brush roller 34 moves to contact the surface of the pulled-out air intake screen 11, the operation of the regulating motor 31 is stopped, so that the electric brush roller 34 is kept in contact with the surface of the air intake screen 11. The electric brush roller 34 is started, and it begins to rotate at high speed. The brush on its surface will sweep and clean the surface of the air intake screen 11, sweeping off the dust and debris accumulated on the air intake screen 11. The cleaning component 3 drives the screw 32 to rotate by regulating the motor 31, which in turn causes the threaded slider 33 to drive the electric brush roller 34 to move, realizing the automation of the cleaning process. Compared with the traditional manual cleaning method, it does not require manual cleaning with hand tools, which greatly saves manpower and time and improves cleaning efficiency.

[0074] As a preferred embodiment of the above technical solution, such as Figure 5 As shown, a guide post 35 is provided on the outer wall of the test cabinet 1, and a guide bearing block 36 is slidably sleeved on the guide post 35. The bottom end of the guide bearing block 36 is rotatably engaged with the electric brush roller 34.

[0075] In this embodiment, the guide post 35 provides a precise track for the movement of the electric brush roller 34, and the guide bearing block 36 slides on the guide post 35, which can ensure that the electric brush roller 34 moves in a straight line in the horizontal direction without any left or right deviation; this allows the electric brush roller 34 to accurately cover all parts of the air intake screen 11 when cleaning it, thus improving the stability and accuracy of cleaning.

[0076] As a preferred embodiment of the above technical solution, such as Figure 5 As shown, the guide post 35 and the screw 32 are parallel to each other;

[0077] In this embodiment, the guide post 35 and the screw 32 are parallel to each other, so that the sliding direction of the guide bearing block 36 on the guide post 35 is consistent with the moving direction of the threaded slider 33 on the screw 32; during the movement of the electric brush roller 34, the electric brush roller 34 can be effectively prevented from deviating to the left or right, ensuring that the electric brush roller 34 accurately cleans the air intake screen 11 along a straight line, thus improving the cleaning accuracy.

[0078] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. An integrated active testing device for primary frequency regulation in a hydropower station, characterized in that, include: A test cabinet, which is supported and installed on the ground, is equipped with a primary frequency regulation test module for hydropower stations. The air intake grille, with a sliding cover, is mounted on the back of the test cabinet; A cooling fan is slidably installed inside the test cabinet and communicates with the air intake grille; A transmission component, mounted on the test cabinet, is used to link the movement of the air intake grille and the cooling fan. A cleaning component is installed on the outer wall of the test cabinet and is used to clean the air intake grille. The transmission assembly includes: An outward push block is located at the top of the air intake grille; An inward push block is located at the top of the air intake grille; Guide rails are fixedly installed on the top of the test cabinet; A drive rack and pinion, with a sliding assembly mounted on the guide rack; The driven impact rod is fixedly connected to the drive rack and engages with the outer push block and the inner push block in an impact-cooperating manner. The first gear is rotatably mounted on the top of the test cabinet, and the first gear meshes with the drive rack; The second gear is rotatably mounted inside the top of the test cabinet and is coaxial with the first gear. The driven rack is fixedly connected to the cooling fan, and the driven rack meshes with the second gear; A support slide is fixedly installed on the inner side wall of the test cabinet. The support slide is used to support the cooling fan, and the cooling fan slides in a sliding fit with the support slide.

2. The integrated hydropower station primary frequency regulation active testing device as described in claim 1, characterized in that, The test cabinet is equipped with a guide strip, which slides and fits against the air intake grille.

3. The integrated hydropower station primary frequency regulation active testing device as described in claim 2, characterized in that, Multiple rubbing blocks are arranged on the inner sidewall of the guide strip, and each rubbing block corresponds to a groove in the air intake grille.

4. The integrated hydropower station primary frequency regulation active testing device as described in claim 1, characterized in that, The test cabinet has two hanging sleeves at the top inside, and a hanging guide rod is slidably inserted into each hanging sleeve. The hanging guide rod is fixedly connected to the cooling fan.

5. The integrated hydropower station primary frequency regulation active testing device as described in claim 1, characterized in that, The driven impact rod is equipped with a buffer pad at the impact end of the outer and inner push blocks.

6. The integrated hydropower station primary frequency regulation active testing device as described in claim 1, characterized in that, The cleaning component includes: An adjustment motor is fixedly installed on the outer wall of the test cabinet, and a screw is rotatably provided at the output end of the adjustment motor. A threaded slider is slidably disposed on the outer wall of the test cabinet, and the threaded slider is threadedly engaged with the screw. An electric brush roller, rotatably mounted on the top of the threaded slider, is used to sweep and clean the pulled-out air intake mesh plate.

7. The integrated hydropower station primary frequency regulation active testing device as described in claim 6, characterized in that, A guide post is provided on the outer wall of the test cabinet, and a guide bearing block is slidably sleeved on the guide post. The bottom end of the guide bearing block is rotatably engaged with the electric roller.

8. The integrated hydropower station primary frequency regulation active testing device as described in claim 7, characterized in that, The guide post is parallel to the screw.

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