Medium-voltage frequency converter with protection structure

Abstract

The utility model discloses a medium-voltage frequency converter with a protection structure, which belongs to the technical field of medium-voltage frequency converters and comprises a medium-voltage frequency converter body, a protection shell is sleeved outside the medium-voltage frequency converter body, the top and the bottom of the medium-voltage frequency converter body are respectively contacted with the top inner wall and the bottom inner wall of the protection shell, and a door plate is hinged to the front end of the protection shell. And a plurality of rubber pads playing a buffering role are fixedly embedded in the outer wall of the door plate and the outer wall of the protective shell. The medium-voltage frequency converter body is protected through the protective shell and the door plate, the medium-voltage frequency converter body can be prevented from being damaged after being collided, the service life of the medium-voltage frequency converter body can be further prolonged, the rubber pad is made of soft materials, the buffering effect can be achieved, and when the medium-voltage frequency converter body needs to be overhauled, workers only need to open the door plate, and maintenance is convenient. And then the two [-shaped plates are pushed away from each other, the pull rod drives the circular plate, and after the circular rod and the clamping plate are away from the medium-voltage frequency converter body, the medium-voltage frequency converter body can be taken out of the protective shell for maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of medium-voltage frequency converters, and belongs to a medium-voltage frequency converter with a protection structure. Background Art

[0002] Submersible pump medium-voltage inverters are specialized devices used for starting, operating, stopping, and configuring various protection functions during submersible pump unit operation. Submersible pumps are multi-stage centrifugal pumps operating underground, lowered into the well along with the oil pipeline. Ground power supplies transmit electrical energy to the submersible motor through a transformer, control panel, and power cables. This motor drives the multi-stage centrifugal pump, converting electrical energy into mechanical energy to lift the well fluid to the surface. The submersible pump's medium-voltage inverter is a type of frequency converter that facilitates operator control of the submersible pump's normal operation.

[0003] For example, a medium-voltage AC inverter with the prior art publication number CN215120581U, the utility model achieves the effect of the upper brush lightly brushing back and forth at the gaps of the ventilation holes of the inverter case body through the coordination among the upper brush, the inverter case body, the movable block and the rotating rod, and utilizes the circular rotation of the rotating rod to realize the horizontal movement of the movable block, thereby avoiding the problem of the internal temperature of the inverter case body rising due to the blockage of the ventilation holes, reducing the damage to the inverter case body caused by high temperature, and extending the service life of the inverter case.

[0004] However, the above-mentioned prior art still has the following problems when used: since submersible oil pumps are usually used underground, the underground environment is dim, and workers are likely to bump into the medium-voltage inverter when walking back and forth, causing damage to the medium-voltage inverter, which in turn affects the control of the submersible oil pump. In addition, the medium-voltage inverter is usually fixed on the submersible oil pump, which is not convenient for disassembly and maintenance. Based on this, the utility model provides a medium-voltage inverter with a protective structure that is easy to disassemble and assemble. Utility Model Content

[0005] To this end, the utility model provides a medium voltage inverter with a protective structure to solve the problem in the prior art that the medium voltage inverter is easily damaged by collision due to the direct exposure of the medium voltage inverter.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] A medium-voltage frequency converter with a protection structure includes a medium-voltage frequency converter main body. A protective shell is sleeved outside the medium-voltage frequency converter main body. The top and bottom of the medium-voltage frequency converter main body are respectively in contact with the inner walls of the top and bottom of the protective shell. A door panel is hinged to the front end of the protective shell. A plurality of rubber pads for buffering are fixedly embedded in the outer wall of the door panel and the outer wall of the protective shell. Fixed components for fixing the medium-voltage frequency converter main body are provided on the inner walls of both sides of the protective shell. The fixed components include clamping plates. The inner sides of the two clamping plates close to each other are in contact with the outer wall of the medium-voltage frequency converter main body. On the outer sides of the two clamping plates far from each other, two sleeves distributed up and down are fixedly provided. An annular groove is opened in the inner wall of each sleeve. A circular plate is slidably arranged in the annular groove. A round rod is fixedly arranged between the circular plate and the clamping plate. On the side of each circular plate far from the round rod, a compression spring is fixedly arranged. The compression spring is fixed to the inner wall of the annular groove.

[0008] Further, moving grooves are opened in the inner walls of both sides of the protective shell. A U-shaped plate is slidably arranged in each of the two moving grooves, which is convenient for staff to adjust the position of the clamping plate.

[0009] Further, on the inner sides of the two U-shaped plates close to each other, two pull rods distributed up and down are fixedly provided. One end of each pull rod sequentially passes through the sleeve and the compression spring and is fixed to the circular plate, which is used to adjust the position of the circular plate.

[0010] Further, insertion slots are opened in the inner walls of the front ends of the two moving grooves. On the outer sides of the two U-shaped plates far from each other, a baffle is provided. The baffle is inserted into the insertion slot, which is used to resist the U-shaped plate and prevent the movement of the U-shaped plate from affecting the fixation of the medium-voltage frequency converter main body by the clamping plate.

[0011] Further, heat dissipation holes are opened in the outer walls of both sides of the protective shell. A heat dissipation fan is fixedly arranged in the heat dissipation holes, which is used to dissipate the heat in the protective shell and avoid the temperature of the medium-voltage frequency converter main body being too high and affecting its use.

[0012] Further, a plurality of air holes are opened in the outer walls of the rubber pads on both sides of the protective shell. The plurality of air holes are all communicated with the heat dissipation holes. A filter screen is fixedly arranged in each of the plurality of air holes, which is used to block dust and sundries in the outside air.

[0013] Further, a buzzer and a warning light are fixedly embedded in the top of the protective shell. The warning light is arranged behind the buzzer, which plays a warning role on the protective shell and prevents staff from accidentally touching the protective shell and the door panel.

[0014] Further, two connecting plates distributed up and down are fixedly provided on both sides of the rear end of the protective shell. A connecting hole is opened in each connecting plate, which is used to fix the protective shell on a submersible electric pump for use.

[0015] The utility model has the following advantages:

[0016] 1. The utility model protects the medium voltage frequency converter body through the protective shell and the door panel, which can avoid damage to the medium voltage frequency converter body after being collided, and thus can extend the service life of the medium voltage frequency converter body. Moreover, the rubber pad is soft, so it can play a buffering role. When it is necessary to repair the medium voltage frequency converter body, the staff only need to open the door panel, and then push the two U-shaped plates away from each other. After the pull rod drives the circular plate, the round rod and the clamping plate away from the medium voltage frequency converter body, the medium voltage frequency converter body can be taken out of the protective shell for repair.

[0017] 2. By using the baffle to抵住 the side of the U-shaped plate, the movement of the U-shaped plate can be prevented, which affects the disassembly of the medium voltage frequency converter body. The two cooling fans blow air, and the outside air flows into the protective shell through the multiple air vents on both sides of the protective shell. The heat inside the protective shell is discharged to the outside of the protective shell through the multiple air vents, which can accelerate the heat dissipation speed inside the protective shell, and thus can avoid damage to the medium voltage frequency converter body due to excessive temperature after long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can be obtained according to the provided drawings.

[0019] The structures, ratios, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present utility model. Therefore, they do not have technical essential significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present utility model.

[0020] Figure 1 It is the overall structure diagram provided by the present utility model;

[0021] Figure 2 It is the internal view of the protective shell provided by the present utility model;

[0022] Figure 3 It is the sectional view of the protective shell provided by the present utility model;

[0023] Figure 4 Provided by the present utility model Figure 3 The enlarged view of part A in the present utility model;

[0024] Figure 5 It is the schematic diagram of the protective shell provided by the present utility model.

[0025] In the figure: 1. Medium-voltage frequency converter main body; 2. Protective case; 3. Door panel; 4. Rubber pad; 5. Fixing component; 6. Moving groove; 7. C-shaped plate; 8. Pull rod; 9. Slot; 10. Baffle; 11. Heat dissipation hole; 12. Heat dissipation fan; 13. Vent hole; 14. Filter screen; 15. Buzzer; 16. Warning light; 17. Connecting plate; 18. Connecting hole;

[0026] 501. Clamping plate; 502. Sleeve; 503. Annular groove; 504. Circular plate; 505. Round rod; 506. Compression spring. Specific implementation mode

[0027] The following specific embodiments illustrate the implementation mode of the present utility model. Those skilled in this technology can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present utility model.

[0028] Referring to the attached drawings of the specification Figure 1-5 The present utility model provides a medium-voltage frequency converter with a protection structure, including a medium-voltage frequency converter main body 1. A protective case 2 is sleeved outside the medium-voltage frequency converter main body 1. The top and bottom of the medium-voltage frequency converter main body 1 are respectively in contact with the inner walls of the top and bottom of the protective case 2. A door panel 3 is hinged to the front end of the protective case 2. A plurality of rubber pads 4 for buffering are fixedly embedded in the outer walls of the door panel 3 and the protective case 2;

[0029] Then, fixing components 5 for fixing the medium-voltage frequency converter main body 1 are provided on both inner walls of the protective case 2. The fixing components 5 include clamping plates 501. The sides of the two clamping plates 501 close to each other are in contact with the outer wall of the medium-voltage frequency converter main body 1. Two sleeve barrels 502 distributed up and down are fixedly provided on the sides of the two clamping plates 501 away from each other. An annular groove 503 is opened in the inner wall of each sleeve barrel 502. A circular plate 504 is slidably provided in the annular groove 503. A round rod 505 is fixedly provided between the circular plate 504 and the clamping plate 501. A compression spring 506 is fixedly provided on the side of each circular plate 504 away from the round rod 505. The compression spring 506 is fixed to the inner wall of the annular groove 503;

[0030] Moreover, moving grooves 6 are opened on both inner walls of the protective case 2. C-shaped plates 7 are slidably provided in the two moving grooves 6, which is convenient for the staff to adjust the position of the clamping plate 501. Two pull rods 8 distributed up and down are fixedly provided on the sides of the two C-shaped plates 7 close to each other. One end of the pull rod 8 sequentially passes through the sleeve barrel 502 and the compression spring 506 and is fixed to the circular plate 504 for adjusting the position of the circular plate 504;

[0031] Moreover, a buzzer 15 and a warning light 16 are fixedly embedded at the top of the protective case 2. The warning light 16 is arranged behind the buzzer 15. The buzzer 15 is used to play voice, and the warning light 16 emits warning lights, playing a warning role on the protective case 2 to prevent the staff from accidentally touching the protective case 2 and the door panel 3. On both sides of the rear end of the protective case 2, two connecting plates 17 distributed up and down are fixedly provided. Each connecting plate 17 is provided with a connecting hole 18 for fixing the protective case 2 on the submersible electric pump for use.

[0032] During use, the staff installs the protective case 2 on the submersible electric pump for use, and uses the medium-voltage frequency converter main body 1 to control the submersible electric pump in real time, so as to improve the safety of the submersible electric pump during operation. Using the protective case 2 and the door panel 3 to protect the medium-voltage frequency converter main body 1 can prevent the medium-voltage frequency converter main body 1 from being damaged after being collided, and thus can extend the service life of the medium-voltage frequency converter main body 1. Moreover, rubber pads 4 are provided on the outer walls of the protective case 2 and the door panel 3. The rubber pads 4 are made of soft materials, so they can play a buffering role. When the medium-voltage frequency converter main body 1 needs to be repaired, the staff only needs to open the door panel 3, and then push the two U-shaped plates 7 away from each other. After the pull rod 8 drives the round plate 504, the round rod 505 and the clamping plate 501 away from the medium-voltage frequency converter main body 1, the medium-voltage frequency converter main body 1 can be taken out of the protective case 2 for repair.

[0033] Refer to the attached instructions Figure 1-5 At the front inner walls of the two moving grooves 6, slots 9 are respectively opened. On the side where the two U-shaped plates 7 are away from each other, baffles 10 are provided. The baffles 10 are inserted into the slots 9 for resisting the U-shaped plates 7 to prevent the movement of the U-shaped plates 7 from affecting the fixation of the clamping plate 501 to the medium-voltage frequency converter main body 1;

[0034] In addition, heat dissipation holes 11 are opened on the outer walls of both sides of the protective case 2. Heat dissipation fans 12 are fixedly arranged in the heat dissipation holes 11 for dissipating the heat inside the protective case 2 to avoid the medium-voltage frequency converter main body 1 being affected by too high temperature during use. On the outer walls of the rubber pads 4 on both sides of the protective case 2, a plurality of air permeable holes 13 are opened. The plurality of air permeable holes 13 are all communicated with the heat dissipation holes 11. Filter nets 14 are fixedly arranged in the plurality of air permeable holes 13 for blocking dust and debris in the outside air;

[0035] By arranging baffles 10 in the two moving grooves 6, when the staff needs to push the U-shaped plates 7 to take out the medium-voltage frequency converter main body 1, the baffles 10 can be used to resist the sides of the U-shaped plates 7, so as to prevent the movement of the U-shaped plates 7 and affect the disassembly of the medium-voltage frequency converter main body 1. The two heat dissipation fans 12 blow air, and the outside air flows into the protective case 2 through the plurality of air permeable holes 13 on both sides of the protective case 2. The heat inside the protective case 2 is discharged to the outside of the protective case 2 through the plurality of air permeable holes 13, which can accelerate the heat dissipation speed inside the protective case 2, and thus can avoid the medium-voltage frequency converter main body 1 being damaged due to too high self-temperature after long-term use.

[0036] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, such modifications or improvements, without departing from the spirit of the present invention, are within the scope of protection claimed herein.

Claims

1. A medium voltage inverter with a protective structure, characterized in that: It includes a medium-voltage frequency converter main body (1), and a protective shell (2) is sleeved outside the medium-voltage frequency converter main body (1). The top and bottom of the medium-voltage frequency converter main body (1) are respectively in contact with the inner walls of the top and bottom of the protective shell (2). A door panel (3) is hinged to the front end of the protective shell (2). Rubber pads (4) for buffering are fixedly embedded in the outer walls of the door panel (3) and the protective shell (2). Fixing components (5) for fixing the medium-voltage frequency converter main body (1) are provided on both inner walls of the protective shell (2). The fixing components (5) include clamping plates (501). On one side where the two clamping plates (501) are close to each other, they are in contact with the outer wall of the medium-voltage frequency converter main body (1). On one side where the two clamping plates (501) are far from each other, two sleeves (502) distributed up and down are fixedly provided. An annular groove (503) is opened in the inner wall of each sleeve (502). A circular plate (504) is slidably arranged in the annular groove (503). A round rod (505) is fixedly provided between the circular plate (504) and the clamping plate (501). A compression spring (506) is fixedly provided on one side of each circular plate (504) away from the round rod (505), and the compression spring (506) is fixed to the inner wall of the annular groove (503).

2. The medium voltage inverter with a protective structure according to claim 1, characterized in that: Moving grooves (6) are opened on both inner walls of the protective shell (2), and U-shaped plates (7) are slidably arranged in the two moving grooves (6).

3. The medium voltage inverter with a protective structure according to claim 2, characterized in that: On one side where the two U-shaped plates (7) are close to each other, two pull rods (8) distributed up and down are fixedly provided. One end of the pull rod (8) sequentially penetrates through the sleeve (502) and the compression spring (506) and is fixed to the circular plate (504) for adjusting the position of the circular plate (504).

4. The medium voltage inverter with a protective structure according to claim 2, characterized in that: Insertion slots (9) are opened on the inner walls of the front ends of the two moving grooves (6). On one side where the two U-shaped plates (7) are far from each other, baffles (10) are provided. The baffles (10) are inserted into the insertion slots (9) for resisting the U-shaped plates (7).

5. The medium voltage inverter with a protective structure according to claim 1, characterized in that: Heat dissipation holes (11) are opened on both outer walls of the protective shell (2), and heat dissipation fans (x) are fixedly provided in the heat dissipation holes (11) for dissipating the heat inside the protective shell (2).

6. The medium voltage inverter with a protective structure according to claim 5, characterized in that: A plurality of air-permeable holes (13) are opened in the outer walls of the rubber pads (4) on both sides of the protective shell (2). The plurality of air-permeable holes (13) are all communicated with the heat dissipation holes (11). Filter nets (14) are fixedly provided in the plurality of air-permeable holes (13) for blocking dust and sundries in the outside air.

7. The medium voltage inverter with a protective structure according to claim 1, characterized in that: A buzzer (15) and a warning light (16) are fixedly embedded in the top of the protective shell (2). The warning light (16) is arranged behind the buzzer (15) for playing a warning role on the protective shell (2).

8. The medium voltage inverter with a protective structure according to claim 1, characterized in that: Two connecting plates (17) distributed up and down are fixedly provided on both sides of the rear end of the protective shell (2), and connecting holes (18) are opened in each connecting plate (17).

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