Fan frequency conversion trial rotation cabinet used in maintenance factory room

Abstract

The invention provides a fan frequency conversion trial rotation cabinet used in a maintenance factory. The fan frequency conversion test rotation cabinet used in the maintenance factory room comprises a buffer bottom frame; the test rotation cabinet is fixedly connected to the top of the buffer bottom frame, a mounting plate is mounted at the position, close to the middle, of the interior of the test rotation cabinet, a frequency converter is mounted on the front face of the mounting plate, an exhaust port is formed in the top of the test rotation cabinet, a heat dissipation assembly is mounted on the top of the test rotation cabinet, and monitoring equipment is mounted on the front face of the mounting plate. The monitoring device comprises an online monitoring tachometer, a disconnection alarm, a V / F controller, an open-loop vector controller, a closed-loop vector controller and a PID controller. According to the fan frequency conversion test rotation cabinet used in the maintenance factory, through application of the fan frequency conversion test rotation cabinet, the maintenance efficiency and accuracy of a fan can be effectively improved, the maintenance time is shortened, the maintenance cost is reduced, and a powerful guarantee is provided for stable operation of equipment such as a power plant.

Description

Technical Field

[0001] The invention relates to the technical field of fan frequency conversion test cabinets, and in particular to a fan frequency conversion test cabinet used for repairing a factory. Background Art

[0002] The frequency conversion test cabinet 3 is mainly used to adjust the working frequency of the equipment, reduce energy loss, start the equipment smoothly, and reduce the damage to the motor caused by the large current generated when the equipment is directly started. At the same time, it has analog input, PID control, pump switching control, and communication functions.

[0003] After the fan has been in operation for a long time, it will often cause dynamic imbalance due to disassembly, wear and aging, which will cause excessive vibration of the motor or even burn out, causing a certain impact on safe and stable production.

[0004] Currently, many power plants have installed test power supplies between factories, but they cannot effectively and stably reduce fan vibration, nor can they accurately adjust the fan speed to meet different working conditions and detection requirements.

[0005] Therefore, it is necessary to provide a fan frequency conversion test cabinet for repairing factories to solve the above technical problems. Summary of the invention

[0006] The present invention provides a fan frequency conversion test cabinet for repairing factories, which solves the problem that the test power supply equipped in some power plants cannot effectively and stably reduce the fan vibration and cannot accurately adjust the fan rotation speed.

[0007] In order to solve the above technical problems, the fan frequency conversion test cabinet for repairing factories provided by the present invention comprises: a buffer chassis;

[0008] A test run cabinet, the test run cabinet is fixedly connected to the top of the buffer chassis, a mounting plate is installed near the middle position inside the test run cabinet, a frequency converter is installed on the front of the mounting plate, an exhaust port is opened on the top of the test run cabinet, a heat dissipation component is installed on the top of the test run cabinet, a monitoring device is installed on the front of the mounting plate, and the monitoring device includes an online monitoring tachometer and a disconnection alarm, a V / F controller, an open-loop vector controller, a closed-loop vector controller and a PID controller;

[0009] A second cabinet door, the second cabinet door is rotatably connected to a position near the front of the test cabinet, an operation screen is arranged on the front of the second cabinet door, a control button is installed on the front of the second cabinet door, the front of the test cabinet is rotatably connected to the first cabinet door, and the front of the first cabinet door is rotatably connected to an observation panel;

[0010] The mounting plate is installed near the middle of the test cabinet by bolts and can be removed. There are threaded holes on the mounting plate for easy installation of equipment. Please refer to the working process of the inverter. Figure 4 , Figure 5 and Figure 6 , fan power and the actual situation at the maintenance site, design a 400V 160kW frequency conversion test cabinet 3, purchase a frequency converter, 800*1200*600mm, control buttons 9 and operation screen 10 include start, stop, emergency stop buttons, speed adjustment switch and necessary signal lights and instrument operation, fault, voltmeter, ammeter, etc., the line monitoring tachometer and line break alarm inside the test cabinet are equipped with V / F controller, open-loop vector controller, closed-loop vector controller and PID controller, which can easily realize process control, the frequency converter has automatic voltage adjustment function, when the grid voltage changes, it can automatically keep the output voltage constant, the protection function has power-on motor short-circuit detection, input and output phase loss protection, ground fault, overcurrent, overvoltage, undervoltage, overload, overheating protection, analog input and output 4-20mA, 0-10VDC each more than 2 channels, digital input and output signals at least 6, with point isolation and free programming, the frequency converter line passes through the front of the mounting plate and out from the back.

[0011] Preferably, air inlet holes are provided at positions near the bottom on both sides of the test cabinet, and filter screens are installed at positions near the bottom on both sides of the inner wall of the test cabinet;

[0012] The positions of the filter and the air inlet correspond to each other.

[0013] Preferably, four supporting bolts are installed on the top of the test cabinet, and a top cover is installed on the top of the supporting bolts;

[0014] The four support bolts are respectively located on the top of the test cabinet near the four corners.

[0015] Preferably, the heat dissipation assembly comprises an exhaust frame, and a protective net is installed on the top of the exhaust frame;

[0016] The protective net can prevent debris from entering the interior of the test cabinet, and the positions of the exhaust frame and the exhaust port correspond to each other.

[0017] Preferably, a plurality of fixing frames are installed inside the exhaust frame, and a heat dissipation fan is installed on the top of each fixing frame;

[0018] The cooling fan can discharge the high-temperature air inside the test cabinet.

[0019] Preferably, the buffer chassis comprises a chassis, the bottom of the inner wall of the chassis is located at four corners and is fixedly connected with mounting blocks, and the top of the chassis near the four corners is installed with buffer springs through fixed plates;

[0020] The top end of the buffer spring is fixedly connected to the bottom of the test cabinet through a fixing plate.

[0021] Preferably, a plurality of guide grooves are installed on the back of the mounting plate, a mounting rod is installed near the back of the test cabinet, and a plurality of buckles are installed on the front of the mounting rod;

[0022] The two ends of the mounting rod are connected to the two sides of the inner wall of the test cabinet, so that the mounting rod is located at the back of the guide groove near the top, and the buckle corresponds to the number and position of the guide groove.

[0023] Preferably, both sides of the inner wall of the test cabinet are provided with sliding rods near the back through fixing plates, the outer surfaces of the sliding rods are slidably connected with sliding rings, and the front sides of the two sliding rings are fixedly connected with a movable rod with a buckle;

[0024] The movable rod is located at the back of the guide groove, and the movable rod can move up and down on the back of the guide groove through a slip ring.

[0025] Preferably, the bottoms of the two slip rings are fixedly connected with fixing buckles, and the bottoms of the fixing buckles are fixedly connected with supporting springs;

[0026] The fixing buckle is put on the slide bar and then slides to the corresponding position, and the fixing buckle and the slip ring can be clamped by the bolt on the fixing buckle contacting with the slide bar.

[0027] Preferably, a limit frame is installed on the back of the mounting plate, and a hole is opened on one side of the test cabinet near the bottom;

[0028] The positions of the hole and the limit frame correspond.

[0029] Compared with the related art, the fan frequency conversion test cabinet for repairing factories provided by the present invention has the following beneficial effects:

[0030] The present invention provides a fan frequency conversion test cabinet for repairing factories. In order to quickly and accurately test the performance of the fan, a mounting plate is installed near the middle position inside the test cabinet on the graded test equipment, and then the frequency converter is installed on the mounting plate, and the line is passed through the back of the mounting plate and connected to the test equipment. Then a second cabinet door is installed inside the test cabinet, and an operation screen and control buttons for controlling the operation of the frequency converter are installed on the second cabinet door. Then the front of the test cabinet is sealed by the first cabinet door. During the operation of the frequency converter, the heat dissipation component can discharge the heat inside the test cabinet, and let the outside air enter to form air circulation, so that the frequency converter can work at an appropriate temperature. Through this design, the application of the fan frequency conversion test cabinet can effectively improve the maintenance efficiency and accuracy of the fan, reduce the maintenance time and cost, and provide a strong guarantee for the stable operation of equipment such as power plants. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic structural diagram of a first embodiment of a frequency conversion test cabinet for repairing fans between factories provided by the present invention;

[0032] Figure 2 A structural schematic diagram of a frequency converter is provided for the present invention;

[0033] Figure 3 A structural schematic diagram of a heat dissipation fan is provided for the present invention;

[0034] Figure 4 A control circuit diagram of a frequency converter is provided for the present invention;

[0035] Figure 5 A schematic diagram of a potentiometer of a frequency converter is provided for the present invention;

[0036] Figure 6 A schematic diagram of a frequency converter is provided for the present invention;

[0037] Figure 7 A schematic structural diagram of a second embodiment of a frequency conversion test cabinet for repairing fans between factories provided by the present invention;

[0038] Figure 8 A structural schematic diagram of a guide groove is provided for the present invention;

[0039] Fig. 9 The present invention provides Figure 8 An enlarged view of point A is shown.

[0040] Numbers in the figure: 1. buffer base frame, 101. base frame, 102. mounting block, 103. fixing plate, 104. buffer spring, 2. air inlet, 3. trial cabinet, 4. support bolt, 5. top cover, 6. heat dissipation assembly, 601. exhaust frame, 602. protective net, 603. cooling fan, 604. fixing frame, 7. first cabinet door, 8. observation board, 9. control button, 10. operation screen, 11. mounting plate, 12. exhaust port, 13. filter net, 14. second cabinet door, 15. through-mouth, 16. guide groove, 17. slide bar, 18. fixing plate, 19. limit frame, 20. movable rod, 21. mounting rod, 22. buckle, 23. fixing buckle, 24. slip ring, 25. support spring, 26. inverter, 27. monitoring equipment. DETAILED DESCRIPTION

[0041] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0042] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6,in, Figure 1 A schematic structural diagram of a first embodiment of a frequency conversion test cabinet for repairing fans between factories provided by the present invention; Figure 2 A structural schematic diagram of a frequency converter is provided for the present invention; Figure 3 A structural schematic diagram of a heat dissipation fan is provided for the present invention; Figure 4 A control circuit diagram of a frequency converter is provided for the present invention; Figure 5 A schematic diagram of a potentiometer of a frequency converter is provided for the present invention; Figure 6 A schematic diagram of a frequency converter is provided for the present invention. A fan frequency conversion test cabinet for repairing a factory comprises: a buffer chassis 1;

[0043] A test cabinet 3, the test cabinet 3 is fixedly connected to the top of the buffer chassis 1, a mounting plate 11 is installed near the middle position inside the test cabinet 3, a frequency converter 26 is installed on the front of the mounting plate 11, an exhaust port 12 is opened on the top of the test cabinet 3, a heat dissipation component 6 is installed on the top of the test cabinet 3, a monitoring device 27 is installed on the front of the mounting plate 11, and the monitoring device 27 includes an online monitoring tachometer and a disconnection alarm, a V / F controller, an open-loop vector controller, a closed-loop vector controller and a PID controller;

[0044] A second cabinet door 14, the second cabinet door 14 is rotatably connected to the interior of the test cabinet 3 near the front, an operation screen 10 is provided on the front of the second cabinet door 14, a control button 9 is installed on the front of the second cabinet door 14, the front of the test cabinet 3 is rotatably connected to the first cabinet door 7, and the front of the first cabinet door 7 is rotatably connected to the observation panel 8;

[0045] The mounting plate 11 is installed near the middle of the test cabinet 3 by bolts and can be removed. The mounting plate 11 is provided with threaded holes for easy installation of the equipment. The working process of the inverter 26 is referenced Figure 4 , Figure 5 and Figure 6, fan power and the actual situation of the maintenance site, design a 400V 160kW frequency conversion test cabinet 3, purchase a frequency converter, 800*1200*600mm, control buttons 9 and operation screen 10 include start, stop, emergency stop buttons, speed adjustment switch and necessary signal lights and instrument operation, fault, voltmeter, ammeter, etc., the line monitoring tachometer and line break alarm inside the test cabinet 3 are equipped with V / F controller, open-loop vector controller, closed-loop vector controller and PID controller, which can easily realize process control. The frequency converter 26 has automatic voltage adjustment function. When the grid voltage changes When the inverter is turned on, it can automatically keep the output voltage constant. The protection functions include power-on motor short-circuit detection, input and output phase loss protection, ground fault, overcurrent, overvoltage, undervoltage, overload and overheating protection. The analog input and output are 4-20mA, 0-10VDC with more than 2 channels each, and there are at least 6 digital input and output signals with point isolation and free programming. The line of the inverter 26 passes through the front of the mounting plate 11 and exits from the back, and passes through one side of the test cabinet 3 to connect with the test equipment. The first cabinet door 7 and the second cabinet door 14 are both provided with locks.

[0046] Air inlet holes 2 are provided on both sides of the test cabinet 3 near the bottom, and filter screens 13 are installed on both sides of the inner wall of the test cabinet 3 near the bottom.

[0047] The filter 13 is located at a position corresponding to the air inlet 2, and the filter 13 can filter dust in the air.

[0048] Four support bolts 4 are installed on the top of the test cabinet 3, and a top cover 5 is installed on the top of the support bolts 4;

[0049] The top cover 5 plays a protective role, and the four support bolts 4 are respectively located at the top of the test cabinet 3 near the four corners.

[0050] The heat dissipation assembly 6 comprises an exhaust frame 601, and a protective net 602 is installed on the top of the exhaust frame 601;

[0051] The protection net 602 can prevent debris from entering the interior of the test cabinet 3 , and the positions of the exhaust frame 601 and the exhaust port 12 correspond to each other.

[0052] A plurality of fixing frames 604 are installed inside the exhaust frame 601, and a cooling fan 603 is installed on the top of each fixing frame 604;

[0053] The heat dissipation fan 603 can discharge the high-temperature air inside the test cabinet 3 to form air circulation inside the test cabinet 3.

[0054] The buffer chassis 1 comprises a chassis 101, the bottom of the inner wall of the chassis 101 is located at four corners and is fixedly connected with mounting blocks 102, and the top of the chassis 101 near the four corners is installed with buffer springs 104 through fixed plates 103;

[0055] The top of the buffer spring 104 is fixedly connected to the bottom of the test cabinet 3 through the fixing plate 103, and a hole is provided on the mounting block 102 to facilitate fixing the base frame 101 at a corresponding position by bolts.

[0056] The working principle of the fan frequency conversion test cabinet for repairing factories provided by the present invention is as follows:

[0057] A mounting plate 11 is installed near the middle of the test cabinet 3 on the graded test equipment, and then the inverter 26 is installed on the mounting plate 11, and the line is passed through the back of the mounting plate 11 and connected to the test equipment. Then a second cabinet door 14 is installed inside the test cabinet 3, and the operation panel 10 and control buttons 9 for controlling the operation of the inverter 26 are installed on the second cabinet door 14. Then the front of the test cabinet 3 is sealed by the first cabinet door 7. In actual use, the start, stop, The emergency stop control button 9 and the operation screen 10 control the operation of the equipment inside the frequency converter 26 and the test cabinet 3. The frequency converter 26 is used to realize continuous adjustment of the fan speed to meet different maintenance test environments and performance requirements. At the same time, the fan frequency conversion test cabinet 3 changes the power frequency of the fan through the frequency converter 26, thereby adjusting the fan speed to meet different working conditions and detection requirements. At the maintenance site, the fan frequency conversion test cabinet 3 can assist maintenance personnel to quickly and accurately test the performance and stability of the fan, thereby ensuring the normal operation of the fan.

[0058] Compared with the related art, the fan frequency conversion test cabinet for repairing factories provided by the present invention has the following beneficial effects:

[0059] In order to quickly and accurately test the performance of the fan, a mounting plate 11 is installed near the middle position inside the test cabinet 3 on the graded test equipment, and then the frequency converter 26 is installed on the mounting plate 11, and the line is passed through the back of the mounting plate 11 and connected to the test equipment. Then a second cabinet door 14 is installed inside the test cabinet 3, and the operating screen 10 and control buttons 9 for controlling the frequency converter 26 are installed on the second cabinet door 14, and then the front of the test cabinet 3 is sealed by the first cabinet door 7. Through this design, the application of the fan frequency conversion test cabinet 3 can effectively improve the maintenance efficiency and accuracy of the fan, reduce maintenance time and cost, and provide a strong guarantee for the stable operation of power plants and other equipment.

[0060] Second embodiment

[0061] Please refer to Figure 7-Figure 8- Fig. 9 , Figure 7 A schematic structural diagram of a second embodiment of a frequency conversion test cabinet for repairing fans between factories provided by the present invention; Figure 8 A structural schematic diagram of a guide groove is provided for the present invention;

[0062] Fig. 9 The present invention provides Figure 8 The enlarged view of A is shown; based on the fan frequency conversion test cabinet for repairing factories provided by the first embodiment of the present application, the second embodiment of the present application proposes another fan frequency conversion test cabinet for repairing factories. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0063] Specifically, the fan frequency conversion test cabinet for repairing factories provided in the second embodiment of the present application is different in that a plurality of guide grooves 16 are installed on the back of the mounting plate 11, a mounting rod 21 is installed near the back of the test cabinet 3, and a plurality of buckles 22 are installed on the front of the mounting rod 21;

[0064] The two ends of the mounting rod 21 are connected to the two sides of the inner wall of the test cabinet 3, so that the mounting rod 21 is located at the back of the guide groove 16 near the top, and the buckle 22 corresponds to the number and position of the guide groove 16, and the buckle 22 is opened into the inside of the guide groove 16.

[0065] Slide bars 17 are installed on both sides of the inner wall of the test cabinet 3 near the back through fixed plates 18, and the outer surfaces of the slide bars 17 are slidably connected with slip rings 24, and the front sides of the two slip rings 24 are fixedly connected with a movable rod 20 with a buckle 22;

[0066] The movable rod 20 is located at the back of the guide groove 16. The movable rod 20 can move up and down on the back of the guide groove 16 through the slip ring 24. The buckle 22 on the movable rod 20 is also inserted into the inside of the guide groove 16 to clamp the line.

[0067] The bottoms of the two slip rings 24 are fixedly connected with fixing buckles 23, and the bottoms of the fixing buckles 23 are fixedly connected with supporting springs 25;

[0068] The bottom end of the support spring 25 is connected to the fixing plate 18 at the bottom end of the slide rod 17. The fixing buckle 23 is sleeved on the slide rod 17 and then slides to the corresponding position. The fixing buckle 23 and the slip ring 24 can be clamped by the bolt on the fixing buckle 23 contacting the slide rod 17.

[0069] A limit frame 19 is installed on the back of the mounting plate 11, and a through hole 15 is opened near the bottom of one side of the test cabinet 3;

[0070] The positions of the opening 15 and the limit frame 19 correspond to each other, and the limit frame 19 is located below the guide groove 16.

[0071] Compared with the related art, the fan frequency conversion test cabinet for repairing factories provided by the present invention has the following beneficial effects:

[0072] In order to make the wiring of the frequency converter 26 neat and convenient for later maintenance and arrangement, a plurality of guide grooves 16 are installed on the back of the mounting plate 11, and a plurality of buckles 22 that are inserted into the guide grooves 16 are installed at the top of the back of the guide grooves 16 through the mounting rod 21. Then, a movable rod 20 with buckles 22 is installed on the outer surface of the two slide bars 17 through two slip rings 24. After the slip ring 24 slides to the corresponding position on the outer surface of the slide bar 17, it is fixed to the outer surface of the slide bar 17 through the fixing buckle 23. At the same time, the bottom of the fixing buckle 23 is supported by the supporting spring 25 to increase stability. In actual use, the frequency converter 26 is first installed. The wiring of the inverter 26 passes from the front to the back of the mounting plate 11, and then passes through the buckles 22 on the mounting rod 21 in sequence, so that the line is located inside the guide groove 16, and then the line is passed through the buckle 22 on the front of the movable rod 20. The fixing buckle 23 can be loosened as needed to adjust the height of the movable rod 20, so that the buckle 22 on the movable rod 20 cooperates with the buckle 22 on the mounting rod 21 to buckle the line inside the guide groove 16, and then the line is passed through the limit frame 19 and the through hole 15 to connect with the fan test run equipment. Through this structure, each line passing through the inverter 26 can be regularly distributed, which is convenient for later maintenance and sorting.

[0073] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A fan frequency conversion test cabinet used for repairing factories, characterized in that: include: Buffer chassis; A test run cabinet, the test run cabinet is fixedly connected to the top of the buffer chassis, a mounting plate is installed near the middle position inside the test run cabinet, a frequency converter is installed on the front of the mounting plate, an exhaust port is opened on the top of the test run cabinet, a heat dissipation component is installed on the top of the test run cabinet, a monitoring device is installed on the front of the mounting plate, and the monitoring device includes an online monitoring tachometer and a disconnection alarm, a V / F controller, an open-loop vector controller, a closed-loop vector controller and a PID controller; The second cabinet door is rotatably connected to the interior of the test cabinet near the front, an operation screen is provided on the front of the second cabinet door, control buttons are installed on the front of the second cabinet door, the front of the test cabinet is rotatably connected to the first cabinet door, and the front of the first cabinet door is rotatably connected to an observation panel.

2. The fan frequency conversion test cabinet for repairing factories according to claim 1 is characterized in that: Air inlet holes are provided at positions near the bottom on both sides of the test cabinet, and filter screens are installed at positions near the bottom on both sides of the inner wall of the test cabinet.

3. The fan frequency conversion test cabinet for repairing factories according to claim 1 is characterized in that: Four supporting bolts are installed on the top of the test cabinet, and a top cover is installed on the top of the supporting bolts.

4. The fan frequency conversion test cabinet for repairing factories according to claim 1 is characterized in that: The heat dissipation component comprises an exhaust frame, and a protective net is installed on the top of the exhaust frame.

5. The fan frequency conversion test cabinet for repairing factories according to claim 4 is characterized in that: A plurality of fixing frames are installed inside the exhaust frame, and a heat dissipation fan is installed on the top of each fixing frame.

6. The fan frequency conversion test cabinet for repairing factories according to claim 1 is characterized in that: The buffer chassis comprises a chassis, the bottom of the inner wall of the chassis is located at four corners and is fixedly connected with mounting blocks, and the top of the chassis near the four corners is installed with buffer springs through fixed plates.

7. The fan frequency conversion test cabinet for repairing factories according to claim 1 is characterized in that: A plurality of guide grooves are installed on the back of the installation plate, a mounting rod is installed near the back of the test cabinet, and a plurality of buckles are installed on the front of the mounting rod.

8. The fan frequency conversion test cabinet for repairing factories according to claim 1 is characterized in that: Sliding rods are installed on both sides of the inner wall of the test cabinet near the back through fixing plates, and the outer surfaces of the sliding rods are slidably connected with slip rings, and the front sides of the two slip rings are fixedly connected with a movable rod with a buckle.

9. The fan frequency conversion test cabinet for repairing factories according to claim 8 is characterized in that: The bottoms of the two slip rings are fixedly connected with fixing buckles, and the bottoms of the fixing buckles are fixedly connected with supporting springs.

10. The fan frequency conversion test cabinet for repairing factories according to claim 1 is characterized in that: A limit frame is installed on the back of the installation plate, and a through opening is opened at a position near the bottom of one side of the test cabinet.

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