Generator neutral point grounding resistor cabinet

Abstract

The utility model discloses a generator neutral point grounding resistor cabinet, which comprises a cabinet body, a support frame and a resistor, a lifting mechanism is arranged in the cabinet body and positioned at the bottom end of the support frame, the lifting mechanism comprises a lifting plate, the lifting plate is arranged at the bottom end of the support frame, and a bottom plate is arranged at the bottom end of the lifting plate. A lug piece is arranged in the middle of the bottom end of the lifting plate, two connecting rods are movably arranged on the side face of the lug piece, the bottom ends of the two connecting rods are connected with sliding blocks respectively, a first sliding groove is formed in the surface of the top end of the bottom plate in a penetrating mode, through grooves are formed in the side faces, penetrating through the cabinet body, of the two sides of the bottom plate, and a two-way threaded rod is movably arranged in the first sliding groove. The lifting mechanism is arranged at the bottom end of the supporting frame, the bidirectional threaded rod rotates to drive the lifting plate to ascend and descend, and therefore the supporting frame is driven to ascend and descend, inspection and maintenance of the resistor are facilitated, the working time of operators is shortened, and the inspection and maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of resistor cabinets, in particular to a generator neutral point grounding resistor cabinet. Background Art

[0002] Commonly used neutral point grounding methods in my country's power system are: direct neutral point grounding, ungrounded neutral point, neutral point grounding through arc suppression coil (resonance grounding), and neutral point grounding through resistor. The grounding operation mode of the power system involves many important issues such as the safe operation of the power grid, power supply reliability, and user power safety. In terms of professional technology, it involves many fields such as power system, overvoltage and insulation coordination, relay protection, communication and automatic control, electromagnetic compatibility, grounding design, etc. It is a system problem with extensive content. Neutral point grounding resistor cabinets are divided into transformer neutral point grounding resistor cabinets and generator neutral point grounding resistor cabinets based on the protection object;

[0003] For example, a generator neutral point grounding resistor cabinet disclosed in the utility model with the authorization announcement number CN218631530U uses a blast chamber and a fan to cool the temperature inside the resistor cabinet body; a rotating assembly and a cleaning assembly are provided to remove dust accumulated on the surfaces of two dustproof screens, thereby avoiding the situation in which the air inside the resistor cabinet body is blocked due to the blockage of the two dustproof screens;

[0004] However, when the resistor inside the generator neutral point grounding resistor cabinet in the prior art needs to be inspected or repaired, due to the different heights of each maintenance operator, some people may need to bend over to operate, which not only reduces the inspection and maintenance efficiency but also wastes working time. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a generator neutral point grounding resistance cabinet, which can solve the technical problem that when the resistors inside the generator neutral point grounding resistance cabinet need to be inspected or repaired, some people may need to bend over to operate.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a generator neutral point grounding resistance cabinet, comprising a cabinet, a support frame arranged inside the cabinet, a resistor installed inside the support frame, a lifting mechanism for lifting the support frame is arranged inside the cabinet and at the bottom end of the support frame, the lifting mechanism comprises a lifting plate, the lifting plate is arranged at the bottom end of the support frame, a bottom plate is arranged at the bottom end of the lifting plate, and the bottom plate is located at the inner bottom end of the cabinet, an ear piece is arranged at the middle part of the bottom end of the lifting plate, two connecting rods are movably arranged on the side of the ear piece, the bottom ends of the two connecting rods are respectively connected to sliders, a first slide groove is penetrated through the top surface of the bottom plate, through grooves are formed on both sides of the bottom plate through the side of the cabinet, a bidirectional threaded rod is movably arranged inside the first slide groove, and a groove is formed on the side of the bottom plate;

[0007] As a preferred technical solution of the utility model, a limit block is provided at one end of the bidirectional threaded rod, the limit block moves inside the groove, and a handle is provided at the other end of the bidirectional threaded rod;

[0008] As a preferred technical solution of the utility model, the outer surface of the handle is provided with a rubber sleeve with anti-slip patterns;

[0009] As a preferred technical solution of the utility model, the inner wall of the cabinet is provided with a second slide groove on both sides, the support frame is provided with a first fixing rod on both sides, and the lifting plate is provided with a second fixing rod on both sides, and the first fixing rod and the second fixing rod are both matched with the second slide groove;

[0010] As a preferred technical solution of the utility model, four second slide grooves are provided, and the four second slide grooves are symmetrically provided along the symmetry axis of the support frame;

[0011] As a preferred technical solution of the utility model, a heat dissipation mechanism is arranged inside the cabinet and at the top of the support frame, and the heat dissipation mechanism includes a heat dissipation fan, ventilation holes and ventilation slots. The heat dissipation fan is arranged at the top of the support frame, the ventilation holes are opened through the top surface of the lifting plate, and the ventilation slots are arranged on both sides of the cabinet and close to the bottom;

[0012] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0013] By arranging a lifting mechanism at the bottom end of the support frame, the lifting plate is driven to move up and down by rotating the bidirectional threaded rod, thereby driving the support frame to move up and down, thereby facilitating the inspection and maintenance of the resistor, shortening the working time of the operator, and improving the inspection and maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the neutral point grounding resistor cabinet of the utility model;

[0015] Figure 2 This is a schematic diagram of the overall structure of the resistor and lifting mechanism of the utility model;

[0016] Figure 3 It is a partial structural schematic diagram of the lifting mechanism of the utility model;

[0017] Figure 4 It is a schematic diagram of the bottom plate and bidirectional threaded rod structure of the lifting mechanism of the utility model;

[0018] Among them: 1. cabinet; 2. support frame; 21. first fixed rod; 3. resistor; 4. lifting mechanism; 41. lifting plate; 411. second fixed rod; 42. bottom plate; 43. ear piece; 44. connecting rod; 45. slider; 46. first slide groove; 47. two-way threaded rod; 471. handle; 472. limit block; 48. groove; 49. second slide groove; 5. heat dissipation mechanism; 51. heat dissipation fan; 52. ventilation hole; 53. ventilation groove. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0020] Example

[0021] Please refer to Figure 1-4As shown, the utility model provides a generator neutral point grounding resistance cabinet, including a cabinet body 1, a support frame 2 arranged inside the cabinet body 1, a resistor 3 installed inside the support frame 2, a lifting mechanism 4 for lifting the support frame 2 is arranged inside the cabinet body 1 and at the bottom end of the support frame 2, the lifting mechanism 4 includes a lifting plate 41, the lifting plate 41 is arranged at the bottom end of the support frame 2, a bottom plate 42 is arranged at the bottom end of the lifting plate 41, and the bottom plate 42 is located at the bottom end of the cabinet body 1, an ear piece 43 is arranged at the middle of the bottom end of the lifting plate 41, two connecting rods 44 are movably arranged on the side of the ear piece 43, the bottom ends of the two connecting rods 44 are respectively connected to sliders 45, and the top surface of the bottom plate 42 is penetrated by a first slide groove 46 , through grooves are provided on both sides of the bottom plate 42 through the side of the cabinet 1, and a bidirectional threaded rod 47 is movably provided inside the first slide groove 46, and a limit block 472 is provided at one end of the bidirectional threaded rod 47. The limit block 472 can ensure that the bidirectional threaded rod 47 can keep rotating inside the first slide groove 46 when the handle 471 is turned, and will not deviate from the first slide groove 46. The limit block 472 moves inside the groove 48, and a handle 471 is provided at the other end of the bidirectional threaded rod 47. The bidirectional threaded rod 47 is movably connected to the slider 45. A groove 48 is provided on the side of the bottom plate 42. The groove 48 is provided to facilitate the placement of the limit block 472 to ensure that the limit block 472 does not extend out of the bottom plate 42;

[0022] By arranging a lifting mechanism 4 at the bottom end of the support frame 2, the lifting plate 41 is driven to move up and down by rotating the bidirectional threaded rod 47, thereby driving the support frame 2 to move up and down, thereby facilitating the inspection and maintenance of the resistor 3, shortening the working time of the operator, and improving the inspection and maintenance efficiency;

[0023] like Figure 3 and Figure 4 As shown, the outer surface of the handle 471 is fitted with a rubber sleeve with anti-slip patterns;

[0024] The rubber sleeve with anti-skid patterns can increase the friction between the palm and the handle 471 to prevent the palm from slipping when the handle 471 is turned;

[0025] like Figure 1 As shown, second slide grooves 49 are provided on both sides of the inner wall of the cabinet 1, first fixing rods 21 are provided on both sides of the support frame 2, and second fixing rods 411 are provided on both sides of the lifting plate 41. The first fixing rod 21 and the second fixing rod 411 are both matched with the second slide grooves 49. Four second slide grooves 49 are provided, and the four second slide grooves 49 are symmetrically provided along the symmetry axis of the support frame 2.

[0026] The first fixing rod 21 and the second fixing rod 411 are provided and the second sliding groove 49 is provided to ensure that the support frame 2 and the lifting plate 41 maintain overall stability during lifting, thereby ensuring the stability of the resistor 3 during lifting;

[0027] like Figure 1 and Figure 2 As shown, a heat dissipation mechanism 5 is arranged inside the cabinet 1 and at the top of the support frame 2. The heat dissipation mechanism 5 includes a heat dissipation fan 51, a ventilation hole 52 and a ventilation slot 53. The heat dissipation fan 51 is arranged at the top of the support frame 2, the ventilation hole 52 penetrates and is opened on the top surface of the lifting plate 41, and the ventilation slot 53 is arranged on both sides of the cabinet 1 and close to the bottom end;

[0028] Turn on the heat dissipation fan 51, and the heat dissipation fan 51 blows toward the resistor 3, so that the heat generated by the resistor 3 is discharged to the outside of the cabinet 1 through the lifting plate 41 and the ventilation slot 53, thereby ensuring that the temperature inside the cabinet 1 is not too high;

[0029] Specific working principle:

[0030] When the operator needs to carry out inspection and maintenance, the operator turns the handle 471 according to the height of the operator so that the handle 471 drives the bidirectional threaded rod 47 to rotate. The threads at both ends of the outer surface of the bidirectional threaded rod 47 rotate in opposite directions, so the two sliders 45 move together or apart, thereby reducing or increasing the angle between the two connecting rods 44, and then causing the lifting plate 41 to drive the support frame 2 to rise or fall, thereby facilitating the inspection and maintenance of the resistor 3, shortening the operator's working time, and improving the inspection and maintenance efficiency.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A generator neutral point grounding resistor cabinet, comprising a cabinet body (1), a support frame (2) arranged inside the cabinet body (1), and a resistor (3) installed inside the support frame (2), characterized in that: A lifting mechanism (4) for lifting the support frame (2) is arranged inside the cabinet (1) and at the bottom end of the support frame (2). The lifting mechanism (4) comprises a lifting plate (41). The lifting plate (41) is arranged at the bottom end of the support frame (2). A bottom plate (42) is arranged at the bottom end of the lifting plate (41). The bottom plate (42) is located at the bottom end of the cabinet (1). An ear piece (43) is arranged at the middle of the bottom end of the lifting plate (41). Two connecting rods (44) are movably arranged on the side of the ear piece (43). The bottom ends of the two connecting rods (44) are respectively connected to sliders (45). A first sliding groove (46) is provided through the top surface of the bottom plate (42). Through grooves are provided on both sides of the bottom plate (42) and through the side of the cabinet (1). A bidirectional threaded rod (47) is movably arranged inside the first sliding groove (46). A groove (48) is provided on the side of the bottom plate (42).

2. A generator neutral point grounding resistor cabinet according to claim 1, characterized in that: A limit block (472) is provided at one end of the bidirectional threaded rod (47), and the limit block (472) moves inside the groove (48). A handle (471) is provided at the other end of the bidirectional threaded rod (47).

3. A generator neutral point grounding resistor cabinet according to claim 2, characterized in that: The outer surface of the handle (471) is fitted with a rubber sleeve with anti-slip patterns.

4. A generator neutral point grounding resistor cabinet according to claim 1, characterized in that: Second sliding grooves (49) are provided on both sides of the inner wall of the cabinet (1), first fixing rods (21) are provided on both sides of the support frame (2), and second fixing rods (411) are provided on both sides of the lifting plate (41), and both the first fixing rod (21) and the second fixing rod (411) are adapted to the second sliding grooves (49).

5. A generator neutral point grounding resistor cabinet according to claim 4, characterized in that: Four second sliding grooves (49) are provided, and the four second sliding grooves (49) are symmetrically provided along the symmetry axis of the support frame (2).

6. A generator neutral point grounding resistor cabinet according to claim 1, characterized in that: A heat dissipation mechanism (5) is arranged inside the cabinet (1) and at the top of the support frame (2). The heat dissipation mechanism (5) comprises a heat dissipation fan (51), a ventilation hole (52) and a ventilation slot (53). The heat dissipation fan (51) is arranged at the top of the support frame (2). The ventilation hole (52) is penetrated and opened on the top surface of the lifting plate (41). The ventilation slot (53) is arranged on both sides of the cabinet (1) and close to the bottom.

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