A high voltage soft starter sleeve device

Abstract

The invention discloses a high-voltage soft starter sleeve device, including a flange, a flange seat and a sleeve, the flange seat including a base plate and a mounting plate perpendicular to the base plate, the base plate and the mounting plate are fixedly connected by at least one reinforcing rib; a through hole is provided on the mounting plate, the sleeve is connected to the flange through the through hole, the flange and the mounting plate are detachably connected, the center of the sleeve is provided with a motor shaft hole, the sleeve includes a large end and a small end, and a variable diameter section smoothly transitioning to connect the large end and the small end. The invention fully considers and solves the technical difficulties that the iron core of the coil will generate electromagnetic traction and friction resistance when the high voltage is passed, solves the problem that the iron core of the reactor cannot be adjusted, and enables the output voltage of the reactor to be smoothly adjusted.

Description

Technical Field

[0001] The invention relates to the technical field of electrical equipment control, and in particular to a high-voltage soft starter shaft sleeve device. Background Art

[0002] In the industrial fields of construction, metallurgy, mining, petrochemical, power generation, etc., high-power high-voltage motor equipment has been widely used. When the motor starts, the starting impact current is very large, which will interfere with the power grid and other loads, and even endanger the safe operation of the power grid. In order to solve this problem, various high-voltage soft starting methods and high-voltage soft starting equipment are needed. High-voltage soft starting equipment can generally be divided into soft starter types such as liquid resistance, magnetic control, and thyristor.

[0003] In actual industrial applications, the most common soft start method is to use a reactor-type soft start device. The principle is to connect a reactor in series when the motor starts to limit and reduce the starting current and grid voltage drop when the motor starts. When the motor runs stably and the current reaches a certain value, the reactor is removed to allow the motor to run normally. The reactor-type soft start device has a simple structure and a stable soft start effect. More and more users use this soft start method. However, since the reactor is mainly composed of an iron core and a coil, and these two components are generally fixed parts that cannot be moved or have a small range of movement, the inductance value of the reactor is less adjustable. In addition, during the process of soft starting using this method, the voltage at the motor end will also drop, which is likely to cause insufficient starting torque and secondary shocks during the starting process. These deficiencies have also greatly restricted the promotion of the reactor-type soft start method. Therefore, it is necessary to improve the existing reactor-type soft start device and solve the above problems to facilitate the promotion and use of the reactor-type soft start device and improve the economic benefits of industrial production. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a device that can achieve telescopic movement of the iron core by dragging and sliding the motor shaft in the coil and the sleeve device, so that the output voltage of the reactor can be stably adjusted.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a high-voltage soft starter sleeve device, including a flange, a flange seat and a sleeve, the flange seat including a base plate and a mounting plate perpendicular to the base plate, the base plate and the mounting plate are fixedly connected by reinforcing ribs; a through hole is opened on the mounting plate, the sleeve and the flange are connected through the through hole, the flange and the mounting plate are detachably connected, the center of the sleeve is passed through the motor shaft, the sleeve interior includes a large end and a small end and a reducing section that smoothly transitions and connects the large end and the small end.

[0006] Preferably, the base plate and the mounting plate are fixedly connected by two reinforcing ribs, thereby increasing the strength of the flange seat and extending the service life of the flange seat.

[0007] Preferably, the inner diameter of the flange is larger than the outer diameter of the sleeve.

[0008] Preferably, the end of the sleeve away from the flange is the large end.

[0009] Preferably, the mounting plate and the base plate are fixed by bolts.

[0010] Preferably, the flange, the base plate and the mounting plate are all provided with through screw holes, and a plurality of screw positioning bases are evenly distributed around the base body.

[0011] Preferably, the base plate is a metal plate with a thickness of 10 mm to 30 mm, which has high strength and meets transmission requirements.

[0012] Preferably, the base plate is fixed to the iron core by bolts, and the base plate and the iron core form a whole.

[0013] Preferably, the inner wall of the shaft sleeve is provided with threads, and the threads are threadedly connected to the motor shaft so that the shaft sleeve rotates synchronously on the shaft.

[0014] Beneficial effects of the invention: The high-voltage soft starter sleeve device of the invention fully considers and solves the problem of line

[0015] When the coil is connected to high voltage, the iron core will produce electromagnetic traction, friction resistance and other technical difficulties, making the reactor

[0016] Dragging and sliding in the coil, for high-voltage motors below 2000KW, whether it is 6KV or 10KV, the iron core can be dragged and slid in the coil through the shaft sleeve device, thereby solving the problem of the inductor iron core being unadjustable, and making the output voltage of the reactor stably adjustable. The specific advantages are as follows: 1. Iron material is used as the main material, which is low in cost and easy to manufacture; 2. It is not affected by the use environment, temperature and geographical location; 3. It is simple to operate, safe and reliable in operation, and has a long service life; 4. It is maintenance-free and saves maintenance costs; 5. The reactor core can be smoothly and steplessly adjusted in the coil, solving the problem of secondary impact on the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 — is a schematic diagram of a high-voltage soft starter sleeve device;

[0018] Figure 2 —Schematic diagram of the connection between the sleeve and the flange;

[0019] In the figure: 1-flange, 2-flange seat, 3-shaft sleeve, 4-base plate, 5-mounting plate, 6-reinforcement rib, 7-base plate bolt fixing hole, 8-mounting plate bolt hole, 9-flange bolt fixing hole. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Reference Figure 1 A high-voltage soft starter sleeve device comprises a flange 1, a flange seat 2 and a sleeve 3, the flange seat 2 comprises a base plate 4 and a mounting plate 5 perpendicular to the base plate 4, the base plate 4 and the mounting plate 5 are fixedly connected by reinforcing ribs 6; a through hole is provided on the mounting plate 5, the sleeve 3 is connected to the flange 1 through the through hole, the flange 1 and the mounting plate 5 are detachably connected, a motor shaft hole is passed through the center of the sleeve 3, the sleeve 3 comprises a large end and a small end and a reducing section which smoothly transitions and connects the large end and the small end.

[0022] The flange seat 2 is fixed on the iron core through the bolt fixing holes 7 of the flange seat base plate, and the flange 1 is driven by the transmission rod of the motor, and then the shaft sleeve 3 is driven to move through the flange 1.

[0023] In this embodiment, the base plate 4 and the mounting plate 5 are fixedly connected by two reinforcing ribs, thereby increasing the strength of the flange seat 2 and extending the service life of the flange seat 2.

[0024] In this embodiment, the inner diameter of the flange 1 is greater than the outer diameter of the sleeve 3 .

[0025] In this embodiment, the end of the sleeve 3 away from the flange 1 is the large end.

[0026] In this embodiment, the mounting plate 5 and the base plate 4 are fixed by bolts.

[0027] In this embodiment, the flange 1, the base plate 4 and the mounting plate 5 are all provided with penetrating screw holes, and a plurality of screw positioning bases are evenly distributed around the base body.

[0028] In this embodiment, the base plate 4 is a metal plate with a thickness of 20 mm, which has high strength and meets the transmission requirements.

[0029] In this embodiment, the base plate 4 is fixed to the iron core by bolts, and the base plate 4 and the iron core form a whole.

[0030] In this embodiment, the inner wall of the shaft sleeve 3 is provided with threads, and the threads are threadedly connected to the motor shaft so that the shaft sleeve can rotate synchronously on the shaft.

[0031] In this embodiment, the flange 1 is bolted to the flange seat mounting plate 5 via the mounting plate bolt holes 8 and the flange bolt fixing holes 9 .

[0032] The working principle and beneficial effects of the present invention are as follows: when the motor starts, the present invention, i.e., the high-voltage soft starter sleeve device, is connected in series to limit and reduce the starting current and grid voltage drop when the motor starts. When the motor runs stably and the current reaches a certain value, the present invention, i.e., the high-voltage soft starter sleeve device, is removed to allow the motor to run normally. Through the combined connection of the sleeve 3 of the present invention and the motor shaft, the sleeve 3 can be synchronously rotated on the shaft, and the flange and flange base connected to the sleeve can be driven to move at the same time. The present invention overcomes the shortcomings of the prior art and provides a device that can realize the extension and retraction movement of the iron core through the motor shaft in the coil and the sleeve device, so that the output voltage of the reactor can be stably adjusted.

[0033] The above are merely embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have combinations and modifications of the aforementioned various technical features. Without departing from the spirit and scope of the present invention, those skilled in the art may make improvements, modifications, equivalent substitutions, or apply the structure or method of the present invention to other fields to achieve the same effect, all of which fall within the scope of protection of the present invention.

Claims

1. A high voltage soft starter sleeve device, characterized in that: It includes a flange, a flange seat and a sleeve. The flange seat includes a base plate and a mounting plate perpendicular to the base plate. The base plate and the mounting plate are fixedly connected by reinforcing ribs. A through hole is opened on the mounting plate. The sleeve is sleeved in the flange. The flange and the mounting plate are detachably connected. The motor shaft is passed through the center of the sleeve. The sleeve includes a large end and a small end and a reducing section that smoothly transitions and connects the large end and the small end. The inner diameter of the flange is larger than the outer diameter of the sleeve; The connection between the flange and the sleeve passes through a through hole provided on the mounting plate; The end of the sleeve away from the flange is the large end; The mounting plate and the base plate are fixed with bolts; The flange, base plate and mounting plate are all provided with through screw holes, and a plurality of screw positioning bases are evenly distributed around the base body; The base plate is fixed to the iron core by bolts, and the base plate and the iron core form a whole; The inner wall of the shaft sleeve is provided with a thread, and the thread is threadedly connected with the motor shaft so that the shaft sleeve can rotate synchronously on the shaft.

2. A high voltage soft starter sleeve device according to claim 1, characterized in that: The base plate is a metal plate with a thickness of 10 mm to 30 mm.

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