Liquid resistance device for high-pressure liquid resistance soft start cabinet

Abstract

The utility model relates to the technical field of high-pressure hydraulic resistance soft start cabinets, and discloses a hydraulic resistance device for a high-pressure hydraulic resistance soft start cabinet, which comprises a cabinet body, a supporting seat is fixedly connected to the bottom in the cabinet body, a rubber pad is fixedly connected to the top of the supporting seat, and a cooling mechanism is arranged at the top of the rubber pad. The surface of the cooling mechanism is provided with a supporting mechanism, and the tops of the two sides of the cabinet body are fixedly connected with dustproof nets. According to the liquid resistance device for the high-voltage liquid resistance soft start cabinet, through the arranged cooling mechanism, when the resistance in the cabinet body is close to zero, the vacuum contactor installed in the cabinet body is closed, the cabinet body is short-circuited, and the motor in the cabinet body operates stably, the purpose of cooling the liquid resistance can be achieved, the service life of the cabinet body is prolonged to a certain extent, and the service life of the cabinet body is prolonged. And through the arranged supporting mechanism, when the movable polar plate moves, the second supporting piece slides on the surface of the connecting rod, and the stability of the movable polar plate in the moving process can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure liquid resistance soft-start cabinets, in particular to a liquid resistance device for high-pressure liquid resistance soft-start cabinets. Background Art

[0002] The high-voltage motor liquid resistance starting cabinet relies on the electrolyte ions dissolved in water to conduct electricity. The electrolyte is filled between two planar plates (i.e. the two poles of the water resistor), forming a capacitor-like conductor, which can limit the flow of current, has a small voltage drop itself, and is a non-inductive component. In other words, it can reduce the starting current of the motor, enable the motor to obtain a larger terminal voltage, and improve the power factor during starting, so the motor can start successfully.

[0003] The patent network announcement number CN 203933460 U discloses a liquid resistance device for a high-voltage liquid resistance soft start cabinet, including a cabinet, the cabinet is divided into two layers by a partition; the lower layer of the cabinet is provided with a liquid resistance box, and the upper layer is provided with a vacuum contactor located on the partition; the left and right sides of the liquid resistance box are provided with pole plates, and the vacuum contactor is connected to the pole plates in the liquid resistance box through a copper bar; the liquid resistance box is a double-layer structure, consisting of an inner and outer box, and a support block is provided between the inner and outer boxes; the inner wall of the inner box is provided with reinforcing ribs; the upper left end of the outer box is provided with a water inlet valve, and the lower right end is provided with a water outlet valve. The utility model reduces the size of the cabinet and increases the number of starts; due to the use of circulating water cooling, the cooling effect is better, so that when the motor starts, the temperature of the liquid resistance rises slowly, and the number of starts is more; the reduction in the size of the cabinet reduces the space occupied and saves costs.

[0004] The applicant believes that the following disadvantages exist: the moving electrode plate and the static electrode plate in the liquid resistance box of the high-pressure liquid resistance soft-start cabinet are fixed, which results in that the resistance value inside the liquid resistance box does not change significantly, so that the motor inside the high-pressure liquid resistance soft-start cabinet cannot move smoothly multiple times, thereby reducing the service life of the high-pressure liquid resistance soft-start cabinet. Utility Model Content

[0005] The utility model aims to provide a liquid resistance device for a high-pressure liquid resistance soft-start cabinet to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a liquid resistance device for a high-pressure liquid resistance soft start cabinet, comprising a cabinet body, a support seat fixedly connected to the bottom of the cabinet body, a rubber pad fixedly connected to the top of the support seat, a cooling mechanism arranged on the top of the rubber pad, a supporting mechanism arranged on the surface of the cooling mechanism, and dust nets fixedly connected to the tops of both sides of the cabinet body.

[0007] The cooling mechanism includes a liquid resistance box, which is fixedly connected to the top of the rubber pad, a fixing piece is fixedly connected to the surface of the liquid resistance box, a threaded rod is rotatably connected to the top of the fixing piece, a second support column is fixedly connected to the top of the threaded rod, a pulley group is transmission-connected to the surface of the second support column, a side of the pulley group away from the second support column is transmission-connected to an output shaft, a servo motor is fixedly connected to the bottom of the output shaft, a first support column is fixedly connected to the surface of the liquid resistance box, a positioning piece is rotatably connected to the bottom of the threaded rod, and the positioning piece is fixedly connected to the surface of the liquid resistance box.

[0008] Preferably, a first support member is threadedly connected to the surface of the threaded rod, a support plate is fixedly connected to the surface of the first support member, and a vacuum contactor is fixedly connected to the middle of the top of the support plate. During the rotation of the threaded rod, the support plate can be driven to move downward, and the moving pole plate moves downward.

[0009] Preferably, the bottom of the support plate is fixedly connected with a vertical plate, the bottom of the vertical plate is fixedly connected with a moving pole plate, and the bottom of the liquid resistance box is fixedly connected with a static pole plate, and the vertical plate is provided to support the moving pole plate.

[0010] Preferably, the number of the moving pole plates and the static pole plates is three, and the three moving pole plates and the static pole plates are arranged at equal intervals. With the cooperation of the moving pole plates and the static pole plates, the resistance value inside the liquid resistance box can be changed.

[0011] Preferably, the supporting mechanism includes a supporting frame, the supporting frame is fixedly connected to the surface of the liquid resistance box, the supporting frame is rotatably connected to the surface of the second supporting column, and connecting blocks are fixedly connected on both sides of the bottom of the supporting frame. By setting up the supporting frame, it can be ensured that the threaded rod will not tilt during the rotation process.

[0012] Preferably, a connecting rod is fixedly connected to the bottom of the connecting block, and a limiting plate is fixedly connected to the bottom of the connecting rod, and the limiting plate is fixedly connected to the liquid resistance box. The surface of the connecting rod is slidably connected to a second support member, and the second support member is fixedly connected to the surface of the support plate. When the moving pole plate is moving, the second support member slides on the surface of the connecting rod, which can ensure the stability of the moving pole plate during movement.

[0013] Compared with the prior art, the utility model provides a liquid resistance device for a high-pressure liquid resistance soft start cabinet, which has the following beneficial effects:

[0014] 1. The high-voltage liquid resistance soft start cabinet uses a liquid resistance device. Through the cooling mechanism, when the resistance inside the cabinet is close to zero, the vacuum contactor installed inside the cabinet is energized, the cabinet is short-circuited, and the motor inside the cabinet runs smoothly, which can achieve the purpose of cooling the liquid resistance, increase the number of cabinet starts, and improve the service life of the cabinet to a certain extent.

[0015] 2. The hydraulic resistance device for the high-pressure hydraulic resistance soft start cabinet has a support mechanism. When the moving pole plate is moving, the second support member slides on the surface of the connecting rod, thereby ensuring the stability of the moving pole plate during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the cooling mechanism of the utility model;

[0019] Figure 3 It is a partial structural schematic diagram of the cooling mechanism of the utility model;

[0020] Figure 4 It is a schematic cross-sectional diagram of a portion of the structure of the cooling mechanism of the utility model;

[0021] Figure 5 It is a schematic diagram of the support mechanism of the utility model.

[0022] In the figure: 1. cabinet; 2. cooling mechanism; 21. support plate; 22. vertical plate; 23. threaded rod; 24. fixing member; 25. first support member; 26. servo motor; 27. moving pole plate; 28. first support column; 29. ​​liquid resistance box; 201. vacuum contactor; 202. static pole plate; 203. second support column; 3. supporting mechanism; 31. support frame; 32. positioning member; 33. second support member; 34. connecting rod; 35. connecting block; 36. limit plate; 4. rubber pad; 5. support seat; 6. dust net. Implementation

[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] The utility model provides a technical solution: Example

[0025] Combination Figure 1 to Figure 2 -4, a liquid resistance device for a high-pressure liquid resistance soft start cabinet, comprising a cabinet body 1, a support seat 5 is fixedly connected to the bottom of the cabinet body 1, a rubber pad 4 is fixedly connected to the top of the support seat 5, a cooling mechanism 2 is arranged on the top of the rubber pad 4, a supporting mechanism 3 is arranged on the surface of the cooling mechanism 2, and dustproof nets 6 are fixedly connected to the tops of both sides of the cabinet body 1.

[0026] The cooling mechanism 2 includes a liquid resistance box 29, which is fixedly connected to the top of the rubber pad 4. A fixing part 24 is fixedly connected to the surface of the liquid resistance box 29. A threaded rod 23 is rotatably connected to the top of the fixing part 24. A second support column 203 is fixedly connected to the top of the threaded rod 23. A pulley group is transmission-connected to the surface of the second support column 203. The side of the pulley group away from the second support column 203 is transmission-connected to an output shaft. A servo motor 26 is fixedly connected to the bottom of the output shaft. A first support column 28 is fixedly connected to the bottom of the servo motor 26. The first support column 28 is fixedly connected to the surface of the liquid resistance box 29. A positioning part 32 is rotatably connected to the bottom of the threaded rod 23. The positioning part 32 is fixedly connected to the surface of the liquid resistance box 29.

[0027] Furthermore, a first support member 25 is threadedly connected to the surface of the threaded rod 23, a support plate 21 is fixedly connected to the surface of the first support member 25, and a vacuum contactor 201 is fixedly connected to the middle of the top of the support plate 21. During the rotation of the threaded rod 23, the support plate 21 can be driven to move downward, and at this time the moving pole plate 27 moves downward.

[0028] Furthermore, the bottom of the support plate 21 is fixedly connected with a vertical plate 22, the bottom of the vertical plate 22 is fixedly connected with a moving pole plate 27, and the bottom of the liquid resistance box 29 is fixedly connected with a static pole plate 202. The vertical plate 22 is provided to support the moving pole plate 27.

[0029] Furthermore, there are three moving pole plates 27 and three static pole plates 202, which are arranged at equal intervals. With the cooperation of the moving pole plates 27 and the static pole plates 202, the resistance value inside the liquid resistance box 29 can be changed. Example

[0030] See also Figure 5 On the basis of the first embodiment, the support mechanism 3 further includes a support frame 31, the support frame 31 is fixedly connected to the surface of the liquid resistance box 29, the support frame 31 is rotatably connected to the surface of the second support column 203, and both sides of the bottom of the support frame 31 are fixedly connected with connecting blocks 35. By setting the support frame 31, it can be ensured that the threaded rod 23 will not tilt during the rotation process.

[0031] Furthermore, a connecting rod 34 is fixedly connected to the bottom of the connecting block 35, and a limiting plate 36 is fixedly connected to the bottom of the connecting rod 34. The limiting plate 36 is fixedly connected to the liquid resistance box 29. The surface of the connecting rod 34 is slidably connected to a second support member 33, and the second support member 33 is fixedly connected to the surface of the support plate 21. When the moving pole plate 27 is moving, the second support member 33 slides on the surface of the connecting rod 34, which can ensure the stability of the moving pole plate 27 during movement.

[0032] In actual operation, by starting the servo motor 26, under the linkage effect formed by the pulley group, the second support column 203 and the threaded rod 23 can be driven to rotate synchronously. During the rotation of the threaded rod 23, the support plate 21 can be driven to move downward. At this time, the moving pole plate 27 moves downward. Since the distance between the moving pole plate 27 and the static pole plate 202 continues to decrease, the resistance value gradually decreases. When the resistance inside the cabinet 1 is close to zero, the vacuum contactor 201 installed inside the cabinet 1 is energized, the cabinet 1 is short-circuited, and the motor inside the cabinet 1 runs smoothly, which can achieve the purpose of cooling the liquid resistance, increase the number of starts of the cabinet 1, and improve the service life of the cabinet 1 to a certain extent. When the moving pole plate 27 is moving, the second support member 33 slides on the surface of the connecting rod 34, which can ensure the stability of the moving pole plate 27 during movement.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A hydraulic resistance device for a high-pressure hydraulic resistance soft start cabinet, comprising a cabinet body (1), Features: The bottom of the cabinet (1) is fixedly connected to a support seat (5), the top of the support seat (5) is fixedly connected to a rubber pad (4), the top of the rubber pad (4) is provided with a cooling mechanism (2), the surface of the cooling mechanism (2) is provided with a support mechanism (3), and the tops of both sides of the cabinet (1) are fixedly connected to dustproof nets (6); The cooling mechanism (2) comprises a liquid resistance box (29), the liquid resistance box (29) is fixedly connected to the top of the rubber pad (4), a fixing piece (24) is fixedly connected to the surface of the liquid resistance box (29), a threaded rod (23) is rotatably connected to the top of the fixing piece (24), a second support column (203) is fixedly connected to the top of the threaded rod (23), a pulley group is transmission-connected to the surface of the second support column (203), a side of the pulley group away from the second support column (203) is transmission-connected to an output shaft, a servo motor (26) is fixedly connected to the bottom of the output shaft, a first support column (28) is fixedly connected to the surface of the liquid resistance box (29), a positioning piece (32) is rotatably connected to the bottom of the threaded rod (23), and the positioning piece (32) is fixedly connected to the surface of the liquid resistance box (29).

2. A liquid resistance device for a high-pressure liquid resistance soft start cabinet according to claim 1, Features: A first support member (25) is threadedly connected to the surface of the threaded rod (23); a support plate (21) is fixedly connected to the surface of the first support member (25); and a vacuum contactor (201) is fixedly connected to the middle of the top of the support plate (21).

3. A hydraulic resistance device for a high-pressure hydraulic resistance soft start cabinet according to claim 2, Features: The bottom of the support plate (21) is fixedly connected to a vertical plate (22), the bottom of the vertical plate (22) is fixedly connected to a moving pole plate (27), and the bottom of the liquid resistance box (29) is fixedly connected to a static pole plate (202).

4. A hydraulic resistance device for a high-pressure hydraulic resistance soft start cabinet according to claim 3, Features: The number of the moving pole plates (27) and the number of the static pole plates (202) is three, and the three moving pole plates (27) and the static pole plates (202) are arranged at equal intervals.

5. The liquid resistance device for a high-pressure liquid resistance soft start cabinet according to claim 1, Features: The support mechanism (3) comprises a support frame (31), the support frame (31) is fixedly connected to the surface of the liquid resistance box (29), the support frame (31) is rotatably connected to the surface of the second support column (203), and connection blocks (35) are fixedly connected to both sides of the bottom of the support frame (31).

6. A hydraulic resistance device for a high-pressure hydraulic resistance soft start cabinet according to claim 5, Features: The bottom of the connecting block (35) is fixedly connected to a connecting rod (34), the bottom of the connecting rod (34) is fixedly connected to a limiting plate (36), the limiting plate (36) is fixedly connected in the liquid resistance box (29), the surface of the connecting rod (34) is slidably connected to a second support member (33), and the second support member (33) is fixedly connected to the surface of the support plate (21).

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