Stable operation device of frequency converter

Abstract

The utility model relates to the technical field of frequency converters, in particular to a stable operation device of a frequency converter. According to the technical scheme, the device comprises a frequency converter, a runner body and a control center, a bottom plate is fixed to the lower surface of the frequency converter, a locking valve is in threaded connection with the upper surface of the bottom plate, a supporting frame is fixed to the rear surface of the frequency converter, and a fixing valve is in threaded connection with the outer end face of one side of the supporting frame; a mounting plate is fixed to the outer end face of one side of the mounting frame, a fixing frame is movably inserted into the outer end face of the other side of the supporting frame, a fixing plate is fixed to the outer end face of one side of the fixing frame, a locking bolt is in threaded connection with the outer end face of one side of the fixing plate, and the operator body is clamped in the mounting frame and the fixing frame. A current sensor is installed on the inner wall of the frequency converter, a controller is installed on the inner wall of the frequency converter, and the control center is installed in a worker office. The utility model can ensure the stable operation of the frequency converter.

Description

Technical Field

[0001] The utility model relates to the technical field of frequency converters, in particular to a frequency converter stable operation device. Background Art

[0002] The frequency converter is an electric energy control device that uses the on-off function of power semiconductor devices to convert industrial frequency power into another frequency. Electric motors are the main power consumers in the national economy, and high-voltage and high-power electric motors are more prominent. Most of these devices have energy-saving potential. Vigorously developing high-voltage and high-power variable frequency speed regulation technology has far-reaching significance. In recent years, although the country has increased its efforts to improve the technology of the power grid, it is extremely rare for the power supply system to have a total power outage. However, many uncertain factors in actual operation have caused the voltage fluctuation of the power grid. Although it is impossible to completely eliminate the occurrence of power fluctuations, as long as the measures taken are effective, the impact of the voltage fluctuation of the power grid on chemical companies will be minimized.

[0003] The prior art discloses an overheating prevention device for ensuring stable operation of a high-voltage frequency converter in CN215120560U, comprising a box body and a box door movably connected to one side thereof, and a handle is provided on the box door, a frequency converter is fixedly installed in the inner cavity of the box body, a support plate is fixedly connected to the inner cavity of the box body, and a heat dissipation chamber is provided below the support plate, a battery is fixedly installed in the inner cavity of the heat dissipation chamber, a charging port is provided on the battery, the battery is electrically connected to a first electrode through a wire, a heat dissipation mechanism is provided in the heat dissipation chamber, a through hole is provided on the support plate, and the heat dissipation mechanism is partially located inside the through hole, and a heat conduction mechanism is fixedly connected to the support plate. The utility model relates to the technical field of high-voltage frequency converters. The overheating prevention device for ensuring stable operation of a high-voltage frequency converter enables the heat conduction mechanism to conduct the temperature of the space where the frequency converter is located. When the temperature is too high, the conduction mechanism connects the battery and the heat dissipation mechanism, and the heat dissipation mechanism dissipates the heat of the space where the frequency converter is located, thereby avoiding excessive temperature and burning of electrical components.

[0004] The ammonia compressor of Anyang Zhongying Fertilizer Co., Ltd. is driven by a motor. The motor and the compressor are connected by a gearbox. The compressor speed is controlled by the gear ratio of 6.069 with a number of gears 176 / 29. The motor speed is controlled by a high-voltage inverter. The inverter converts the 50Hz power supply into a 0-50Hz frequency power supply to control the motor speed. The motor speed is 1490r / min. According to the speed ratio, the compressor speed is controlled at 9043r / min, so that the compressor can work. At present, an 11MW air-cooled high-voltage inverter is used. In order to reduce unplanned downtime, shorten fault recovery time, and improve equipment operation reliability, research and development of the technical project of reliable and stable operation of the inverter of the two units is carried out. Utility Model Content

[0005] The purpose of the utility model is to provide a device for stable operation of a frequency converter to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a frequency converter stable operation device, including a frequency converter, an operating device body, a current sensor and a control center, a bottom plate is fixed to the lower surface of the frequency converter, and a locking valve is threadedly connected to the upper surface of the bottom plate, a support frame is fixed to the rear surface of the frequency converter, and a fixing valve is threadedly connected to an outer end surface of one side of the support frame, a mounting frame is movably connected to an outer end surface of one side of the support frame, and a fixing frame is movably connected to an outer end surface of the other side of the support frame, the operating device body is clamped inside the mounting frame and the fixing frame, and the control center is installed in the staff office.

[0007] When using a frequency converter stable operation device in the present technical solution, loosen the fixing valve, stretch the mounting frame and the fixing frame according to the specific width of the operator body, the mounting frame and the fixing frame drive the mounting plate and the fixing plate to move, clamp the operator body inside the mounting frame and the fixing frame, place the mounting plate and the fixing plate on the front surface of the operator body, tighten the fixing bolts and the locking bolts, and the operator body can be fixed to the mounting plate and the fixing plate. The current sensor can detect whether the frequency converter is operating normally. When the frequency converter is damaged, the current sensor transmits a signal to the controller, and the controller transmits a signal to the display screen, the operator body and the control center. The display screen displays a frequency converter fault, the operator body starts to run, and the control center also receives a fault prompt. At this time, the frequency converter switches from the working state to the fault state, and the operator body switches from the hot standby state to the working state. The operator body can replace the frequency converter to work, and the stable operation of the frequency converter can be ensured.

[0008] Preferably, a mounting groove is provided on the front surface of the frequency converter, and a display screen is embedded and fixed on the inner wall of the mounting groove. By providing the mounting groove on the front surface of the frequency converter, it is convenient to install the display screen.

[0009] Preferably, a mounting plate is fixed to one side of the outer end surface of the mounting frame, and a fixing bolt is threadedly connected to one side of the outer end surface of the mounting plate. By arranging the mounting plate on one side of the mounting frame, it is convenient to fix the operator body.

[0010] Preferably, a fixing plate is fixed to one side of the outer end surface of the fixing frame, and a locking bolt is threadedly connected to one side of the outer end surface of the fixing plate. By arranging the fixing plate on one side of the fixing frame, it is convenient to fix the operator body.

[0011] Preferably, the outer end surfaces on both sides of the bottom plate are movably connected with connecting plates, and fixing holes are provided inside the connecting plates. By arranging the connecting plates and fixing holes on both sides of the bottom plate, it is convenient to install the frequency converter.

[0012] Preferably, a current sensor is installed on the inner wall of the frequency converter, and a controller is installed on the inner wall of the frequency converter. By arranging the current sensor inside the frequency converter, it is convenient to detect whether the frequency converter is damaged.

[0013] Preferably, the signal transmitting end of the current sensor is electrically connected to the signal receiving end of the controller, and the signal transmitting end of the controller is electrically connected to the signal receiving ends of the display screen, the operator body and the control center. Through the electrical connection, the display screen, the operator body and the control center can be controlled according to the result of the current sensor.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model achieves the effect of ensuring the stable operation of the frequency converter by setting a current sensor, a support frame and an operator body, loosening the fixing valve, stretching the mounting frame and the fixing frame according to the specific width of the operator body, and the mounting frame and the fixing frame drive the mounting plate and the fixing plate to move, clamping the operator body inside the mounting frame and the fixing frame, placing the mounting plate and the fixing plate on the front surface of the operator body, tightening the fixing bolts and the locking bolts, and fixing the operator body with the mounting plate and the fixing plate. The current sensor can detect whether the frequency converter is operating normally. When the frequency converter is damaged, the current sensor transmits a signal to the controller, and the controller transmits a signal to the display screen, the operator body and the control center. The display screen displays the frequency converter fault, the operator body starts to run, and the control center also receives a fault prompt. At this time, the frequency converter switches from the working state to the fault state, and the operator body switches from the hot standby state to the working state. The operator body can replace the frequency converter to work, which can ensure the stable operation of the frequency converter.

[0016] 2. The utility model achieves the effect of facilitating the installation of the frequency converter by setting the bottom plate, the connecting plate and the fixing holes. The locking valve is loosened, the connecting plate is held, and the connecting plate is stretched by hand. The connecting plate is stretched to a suitable length according to specific actual needs. The connecting plate can be fixed through the fixing holes, which is convenient for installing the frequency converter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 It is an enlarged structural schematic diagram of the support frame of the utility model;

[0019] Figure 3 It is a partial enlarged structural schematic diagram of the bottom plate of the utility model;

[0020] Figure 4 It is a partial main cross-sectional structural schematic diagram of the frequency converter of the utility model;

[0021] Figure 5It is a schematic diagram of the electrical structure of the utility model.

[0022] In the figure: 1. Installation slot; 2. Display screen; 3. Frequency converter; 4. Operator body; 5. Support frame; 6. Base plate; 7. Mounting frame; 8. Fixing bolt; 9. Mounting plate; 10. Fixing plate; 11. Locking bolt; 12. Fixing frame; 13. Fixing valve; 14. Locking valve; 15. Fixing hole; 16. Connecting plate; 17. Current sensor; 18. Controller; 19. Control center. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1

[0025] See also Figures 1 to 5 The utility model provides an embodiment: a frequency converter stable operation device, including a frequency converter 3, an operating device body 4, a current sensor 17 and a control center 19, a support frame 5 is fixed to the rear surface of the frequency converter 3, and a fixed valve 13 is threadedly connected to the outer end surface of one side of the support frame 5, a mounting frame 7 is movably plugged into the outer end surface of one side of the support frame 5, a mounting plate 9 is fixed to the outer end surface of one side of the mounting frame 7, and a fixing bolt 8 is threadedly connected to the outer end surface of one side of the mounting plate 9, a fixing frame 12 is movably plugged into the outer end surface of the other side of the support frame 5, and the fixing frame 12 is A fixing plate 10 is fixed to one outer end surface, and a locking bolt 11 is threadedly connected to one outer end surface of the fixing plate 10. The operating device body 4 is clamped inside the mounting frame 7 and the fixing frame 12. A current sensor 17 is installed on the inner wall of the inverter 3, and a controller 18 is installed on the inner wall of the inverter 3. The control center 19 is installed in the staff office. The signal transmitting end of the current sensor 17 is electrically connected to the signal receiving end of the controller 18, and the signal transmitting end of the controller 18 is electrically connected to the display screen 2, the operating device body 4 and the signal receiving end of the control center 19.

[0026] Of course, as is well known to those skilled in the art, the display screen 2, inverter 3, operating body 4, current sensor 17, controller 18 and control center 19 of the utility model also need to provide a power device to enable them to work normally, and as is well known to those skilled in the art, the provision of the power is commonplace, and they all belong to conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any optional selections according to their needs or convenience.

[0027] A frequency converter stable operation device based on Example 1, loosen the fixing valve 13, stretch the mounting frame 7 and the fixing frame 12 according to the specific width of the operator body 4, the mounting frame 7 and the fixing frame 12 drive the mounting plate 9 and the fixing plate 10 to move, clamp the operator body 4 inside the mounting frame 7 and the fixing frame 12, place the mounting plate 9 and the fixing plate 10 on the front surface of the operator body 4, tighten the fixing bolts 8 and the locking bolts 11, and the operator body 4 can be fixed to the mounting plate 9 and the fixing plate 10. The current sensor 17 can detect whether the frequency converter 3 is operating normally. When the frequency converter 3 is damaged, the current sensor 17 transmits a signal to the controller 18, and the controller 18 transmits a signal to the display screen 2, the operator body 4 and the control center 19. The display screen 2 displays that the frequency converter 3 is faulty, the operator body 4 starts to run, and the control center 19 also receives a fault prompt. At this time, the frequency converter 3 switches from the working state to the fault state, and the operator body 4 switches from the hot standby state to the working state. The operator body 4 can replace the frequency converter 3 to work, and the stable operation of the frequency converter 3 can be ensured.

[0028] Embodiment 2

[0029] like Figure 1-Figure 5 As shown, the utility model proposes a frequency converter stable operation device. Compared with the first embodiment, this embodiment also includes a frequency converter 3, an operating device body 4, a current sensor 17 and a control center 19. The front surface of the frequency converter 3 is provided with a mounting groove 1, and the inner wall of the mounting groove 1 is embedded with a display screen 2. The lower surface of the frequency converter 3 is fixed with a base plate 6, and the upper surface of the base plate 6 is threadedly connected with a locking valve 14. The outer end surfaces on both sides of the base plate 6 are movably connected with connecting plates 16, and the interior of the connecting plate 16 is provided with fixing holes 15.

[0030] In this embodiment, the locking valve 14 is loosened, the connecting plate 16 is held, and the connecting plate 16 is stretched by hand to a suitable length according to specific actual needs. The connecting plate 16 can be fixed through the fixing hole 15 to facilitate the installation of the inverter 3.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A frequency converter stable operation device, comprising a frequency converter (3), an operating device body (4), a current sensor (17) and a control center (19), characterized in that: A base plate (6) is fixed to the lower surface of the frequency converter (3), and a locking valve (14) is threadedly connected to the upper surface of the base plate (6); a support frame (5) is fixed to the rear surface of the frequency converter (3), and a fixed valve (13) is threadedly connected to the outer end surface of one side of the support frame (5); a mounting frame (7) is movably connected to the outer end surface of one side of the support frame (5), and a fixed frame (12) is movably connected to the outer end surface of the other side of the support frame (5); the operating device body (4) is clamped inside the mounting frame (7) and the fixed frame (12), and the control center (19) is installed in the staff office.

2. The device for stable operation of a frequency converter according to claim 1, characterized in that: The front surface of the frequency converter (3) is provided with a mounting groove (1), and a display screen (2) is embedded and fixed on the inner wall of the mounting groove (1).

3. The inverter stable operation device according to claim 1, characterized in that: A mounting plate (9) is fixed to one outer end surface of the mounting frame (7), and a fixing bolt (8) is threadedly connected to one outer end surface of the mounting plate (9).

4. The inverter stable operation device according to claim 1, characterized in that: A fixing plate (10) is fixed to one outer end surface of the fixing frame (12), and a locking bolt (11) is threadedly connected to one outer end surface of the fixing plate (10).

5. The inverter stable operation device according to claim 1, characterized in that: The outer end surfaces on both sides of the bottom plate (6) are movably connected with connecting plates (16), and the connecting plates (16) are provided with fixing holes (15) inside.

6. The inverter stable operation device according to claim 1, characterized in that: A current sensor (17) is installed on the inner wall of the frequency converter (3), and a controller (18) is installed on the inner wall of the frequency converter (3).

7. The inverter stable operation device according to claim 1, characterized in that: The signal transmitting end of the current sensor (17) is electrically connected to the signal receiving end of the controller (18), and the signal transmitting end of the controller (18) is electrically connected to the display screen (2), the actuator body (4) and the signal receiving end of the control center (19).

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