Converter soft start device

Abstract

The utility model discloses a converter soft start device, relates to the converter technology field, and comprises a housing and a convex plate, one side of the housing is fixedly connected with the convex plate, one side of the housing is movably connected with an element placing plate, the element placing plate is internally provided with a mounting groove, one side of the element placing plate is provided with a quick release mechanism, and the quick release mechanism is provided with a mounting groove. The convex plates are located on the left side and the right side of the shell and symmetrically distributed, and electronic elements such as a transformer and a relay can be installed in the installation grooves in the element containing plates. Compared with an existing common converter soft starting device, the converter soft starting device has the advantages that electronic components such as a transformer and a relay need to be used for realizing soft starting, the components are easy to cause overvoltage and overheating due to large current and difficulty in heat dissipation in a long-time low-voltage state, heat can be discharged by the cooling fins, and the soft starting device is convenient to use. And normal operation temperature is maintained in the shell, and burning and even fire accidents caused by open fire due to over-high temperature are avoided.

Description

Technical Field

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

[0002] The soft start voltage is gradually increased from zero to the rated voltage. In this way, the starting current of the motor during the starting process is controllable instead of the uncontrollable overload impact current in the past. The starting current can be adjusted as needed. There is no impact torque in the entire process of motor starting, but a smooth starting operation.

[0003] For example, a soft start device with application number CN201611217808.0 is electrically connected between the industrial frequency power supply and the motor, characterized in that the soft start device includes a chassis and a first contactor, a second contactor, and a frequency conversion unit arranged in the chassis, the housing of the chassis is divided into adjacent first and second areas, and the first contactor and the second contactor are matched and arranged in the first area, the frequency conversion unit is arranged in the second area, the input side of the frequency conversion unit is connected to the industrial frequency power supply, the output side of the frequency conversion unit is connected to the motor through the first contactor, the motor is connected to the industrial frequency power supply through the second contactor, and the first contactor is electrically interlocked with the second contactor. However, although the converter soft start device can reduce the instantaneous impact current at the start-up, such a long-term low voltage state will have a negative impact on electronic components in some cases, accelerate the aging of electronic components, and need to replace electronic components in time. The fixed structure is not convenient for disassembly, and the entire device needs to be replaced, and the investment cost is too high. Therefore, in view of this, the existing structural deficiencies are studied and improved, and a converter soft start device is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a converter soft starting device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a converter soft starting device, comprising a shell and a convex plate, one side of the shell is fixedly connected to the convex plate, and one side of the shell is movably connected to a component placement plate, an installation groove is opened inside the component placement plate, and a quick release mechanism is provided on one side of the component placement plate.

[0006] Preferably, the quick-release mechanism includes a tightening spring fixedly connected to one side of the component placement plate, and one side of the component placement plate is movably connected to a clamping plate, one side of the clamping plate is fixedly connected to a concave plate, and the outside of the concave plate is fixedly connected to a fastener.

[0007] Preferably, a mounting plate is fixedly connected to one side of the housing, and a mounting hole is provided inside the mounting plate.

[0008] Preferably, a heat sink is fixedly connected to the top of the shell, and a filter is arranged outside the heat sink.

[0009] Preferably, a soft starter is fixedly connected to one side of the housing, and an operating panel is fixedly connected to one side of the soft starter.

[0010] Preferably, an external interface is provided on one side of the soft starter, and an automatic cut-off mechanism is fixedly connected to the interior of the external interface.

[0011] Preferably, the automatic cut-off mechanism comprises a fixed block fixedly connected to an internal position of the soft starter, and a motor is fixedly connected to one side of the fixed block, an electric rod is arranged at the bottom end of the motor, and the cut-off block is fixedly connected to the bottom end of the electric rod.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model adopts the arrangement of the quick-release mechanism and the heat sink. When the electronic components inside the device fail, the housing and the component placement plate can be quickly disassembled to replace the damaged electronic components. Although the impact current at the moment of startup can be reduced, such a long-term low voltage state may have a negative impact on the electronic components in some cases, accelerate the aging of the electronic components, and need to replace the electronic components in time. The traditional device is a fixed structure, which is not convenient for disassembly. The entire device needs to be replaced, and the investment cost is too high. The new device only needs to loosen the fasteners, slide the concave plate inside the quick-release mechanism and the convex plates on both sides of the electronic components, and the housing can be quickly disassembled to facilitate the replacement of the electronic components. At the same time, the realization of soft start requires the use of electronic components, such as transformers, relays, etc. These components are prone to overvoltage and overheating due to large current and difficulty in heat dissipation under a long-term low voltage state. The heat sink can discharge heat to maintain the normal operating temperature inside the housing to avoid excessive temperature, open flames, and ultimately burns or even fire accidents;

[0014] 2. The utility model provides safety protection for the soft start device by setting up an automatic cut-off mechanism. The soft start prolongs the time the electronic device is turned on. When the device changes from a normal working state to an abnormal state, the motor inside the equipment is automatically cut off to drive the cutter at the bottom of the electric pole to cut off the wires. This not only provides protection for the device, but also reduces the failure rate, avoids affecting subsequent work, and causes irreversible failures. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the internal structure of the main body of the utility model;

[0016] Figure 2This is a schematic diagram of the three-dimensional structure of the main body of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the quick release mechanism 5 of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the automatic cutting mechanism 12 of the utility model.

[0019] In the figure: 1. housing; 2. convex plate; 3. component placement plate; 4. mounting groove; 5. quick release mechanism; 501. tightening spring; 502. clamping plate; 503. concave plate; 504. fastener; 6. mounting plate; 7. heat sink; 8. filter; 9. soft starter; 10. operation panel; 11. external interface; 12. automatic cutting mechanism; 1201. fixing block; 1202. motor; 1203. electric rod; 1204. cutting block. DETAILED DESCRIPTION

[0020] 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.

[0021] like Figure 1-Figure 2 As shown, a converter soft starting device includes a shell 1 and a convex plate 2, characterized in that the convex plate 2 is fixedly connected to one side of the shell 1, and a component placement plate 3 is movably connected to one side of the shell 1, a mounting groove 4 is opened inside the component placement plate 3, and a quick release mechanism 5 is provided on one side of the component placement plate 3, the convex plates 2 are symmetrically distributed on the left and right sides of the shell 1, and the mounting groove 4 inside the component placement plate 3 can be used to install electronic components, such as transformers and relays.

[0022] like Figure 3-Figure 4 As shown, the quick-release mechanism 5 includes a tightening spring 501 fixedly connected to one side of the component placement plate 3, and a clamping plate 502 is movably connected to one side of the component placement plate 3, a concave plate 503 is fixedly connected to one side of the clamping plate 502, and a fastener 504 is fixedly connected to the outside of the concave plate 503, the component placement plate 3 is connected to the concave plate 503 through two groups of tightening springs 501, the clamping plate 502 is consistent with the grooves on both sides of the component placement plate 3, and the concave plate 503 is slidably connected to the convex plate 2.

[0023] Furthermore, a mounting plate 6 is fixedly connected to one side of the outer shell 1, and a mounting hole is opened inside the mounting plate 6, a heat sink 7 is fixedly connected to the top of the outer shell 1, and a filter screen 8 is arranged outside the heat sink 7, mounting holes are opened at the upper and lower ends of the mounting plate 6, and the heat generated inside the outer shell 1 is discharged through the heat sink 7, and the filter screen 8 prevents dust from accumulating outside the heat sink 7 and affecting the heat dissipation effect.

[0024] Furthermore, a soft starter 9 is fixedly connected to one side of the housing 1, and an operating panel 10 is fixedly connected to one side of the soft starter 9. The soft starter 9 is connected to the operating panel 10, and the inrush current at the start-up moment can be reduced by controlling the soft starter 9.

[0025] Furthermore, an external interface 11 is provided on one side of the soft starter 9, and an automatic cut-off mechanism 12 is fixedly connected inside the external interface 11. The automatic cut-off mechanism 12 includes a fixed block 1201 fixedly connected to the internal position of the soft starter 9, and a motor 1202 is fixedly connected to one side of the fixed block 1201. An electric rod 1203 is arranged at the bottom end of the motor 1202, and a cut-off block 1204 is fixedly connected to the bottom end of the electric rod 1203. The external interface 11 is connected to the wires, and the motor 1202, the electric rod 1203 and the cut-off block 1204 are located on the same horizontal line. When the voltage is too large, the motor 1202 drives the cut-off block 1204 at the bottom of the electric rod 1203 to rotate and cut off the wires to avoid irreversible failures.

[0026] Working principle: When using the inverter soft start device, first fix the housing 1 in a suitable position through the mounting plate 6, fix the electronic components in the mounting groove 4 inside the component placement plate 3, and slide the concave plate 503 inside the quick release mechanism 5 to connect with the convex plate 2, and the clamping plate 502 engages with the groove inside the component placement plate 3. Twist the fastener 504 to subject the tightening spring 501 to external pressure, so that the convex plate 2 fixes the component placement plate 3, and then the heat generated inside the housing 1 is discharged through the heat sink 7. The soft starter 9 is controlled by the operating panel 10. After the external interface 11 is connected to the wire, if the current is too large, the motor 1202 inside the automatic cutting mechanism 12 drives the electric rod 1203, so that the cutting block 1204 cuts off the wire to prevent irreversible failure. This is the working principle of the inverter soft start device.

Claims

1. A converter soft starter device, comprising a housing (1) and a convex plate (2), characterized in that: A convex plate (2) is fixedly connected to one side of the shell (1), and a component placement plate (3) is movably connected to one side of the shell (1), a mounting groove (4) is provided inside the component placement plate (3), and a quick release mechanism (5) is provided on one side of the component placement plate (3), the quick release mechanism (5) comprises a tightening spring (501) fixedly connected to a position on one side of the component placement plate (3), and a clamping plate (502) is movably connected to one side of the component placement plate (3), a concave plate (503) is fixedly connected to one side of the clamping plate (502), and a fastener (504) is fixedly connected to the outside of the concave plate (503).

2. A converter soft starting device according to claim 1, characterized in that: A mounting plate (6) is fixedly connected to one side of the housing (1), and a mounting hole is provided inside the mounting plate (6).

3. A converter soft starting device according to claim 1, characterized in that: A heat sink (7) is fixedly connected to the top end of the housing (1), and a filter screen (8) is arranged outside the heat sink (7).

4. A converter soft starting device according to claim 1, characterized in that: A soft starter (9) is fixedly connected to one side of the housing (1), and an operating panel (10) is fixedly connected to one side of the soft starter (9).

5. A converter soft starting device according to claim 4, characterized in that: An external interface (11) is provided on one side of the soft starter (9), and an automatic cut-off mechanism (12) is fixedly connected inside the external interface (11).

6. A converter soft starting device according to claim 5, characterized in that: The automatic cut-off mechanism (12) comprises a fixed block (1201) fixedly connected to an internal position of the soft starter (9), and a motor (1202) is fixedly connected to one side of the fixed block (1201), an electric rod (1203) is arranged at the bottom end of the motor (1202), and a cut-off block (1204) is fixedly connected to the bottom end of the electric rod (1203).

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