Reactive compensation cabinet

Abstract

The utility model relates to the technical field of power distribution equipment, and particularly discloses a reactive power compensation cabinet, which comprises a cabinet body and a mounting plate, and further comprises a capacitor arranged at the upper part of the mounting plate, a mounting hole is formed in the mounting plate corresponding to the capacitor, and positioning frames are arranged at opposite positions of the front and rear sides of the mounting plate and can move up and down; the inner side of the upper end of the positioning frame is fixedly connected with two downward positioning rods above the mounting hole; according to the utility model, through the cooperation of the movable mechanism and the pressure sensor, the capacitor can be detected in real time, so that a worker can know that a bulge appears on the surface of the capacitor in time, the dangerousness of the compensation cabinet in use is reduced, the influence on power supply is also reduced, the capacitor can be conveniently disassembled and assembled, and the working efficiency is improved. Therefore, a worker can replace the capacitor more conveniently, and the problems that when an existing compensation cabinet is used, the capacitor cannot be detected in real time, and the capacitor is inconvenient to disassemble and assemble are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of power distribution equipment, in particular to a reactive power compensation cabinet. Background Art

[0002] Reactive power compensation cabinet is a technology that improves the power factor of the power grid in the power supply system, reduces the loss of power supply transformers and transmission lines, improves power supply efficiency, and improves the power supply environment. Therefore, reactive power compensation cabinet occupies an indispensable and very important position in the power supply system. Reasonable selection of compensation cabinet can minimize network losses and improve the quality of the power grid.

[0003] During the use of existing reactive power compensation cabinets, if the ambient temperature is too high, the density of capacitor arrangement is too large, the ventilation is poor, and there are a large number of harmonics in the use environment of the power capacitors, bulging may occur. Therefore, the capacitors need to be checked regularly during the use of the compensation cabinets. However, most of the existing compensation cabinets cannot detect the capacitors in real time during use, resulting in the staff being unable to promptly notify the capacitors of bulging. This not only increases the danger of the compensation cabinet during use, but also affects the power supply.

[0004] At the same time, capacitors are easily damaged devices, and the existing compensation cabinets mostly use bolt connections to fix capacitors. Sometimes, multiple capacitors need to be arranged horizontally. The front and rear ends of the mounting base on each capacitor are fixed with two bolts respectively. Using four bolts to fix each capacitor is rather cumbersome, which affects the efficiency of replacing capacitors and the normal use of the compensation cabinet. Summary of the invention

[0005] The purpose of the utility model is to provide a reactive power compensation cabinet to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a reactive power compensation cabinet, comprising a cabinet body and a mounting plate fixed below the inner cavity thereof, and further comprising;

[0007] A capacitor is arranged on the upper part of the mounting plate, a mounting hole is provided on the mounting plate at a position corresponding to the capacitor, and a positioning frame is provided at the relative positions of the front and rear sides of the mounting plate so as to be movable up and down, and two downward positioning rods are fixedly connected to the inner side of the upper end of the positioning frame above the mounting hole;

[0008] A pressure plate is fixedly connected to the outer side of the bottom end of the positioning frame, and the positioning frame is limited by the pressure plate and the limiting mechanism. A support rod is fixed to the upper part of one side of the mounting plate, and a fixed shell is fixedly connected to the top of the support rod. A pressure sensor is installed inside the fixed shell, and an active mechanism for touching the pressure sensor is arranged inside the fixed shell, and the active mechanism is connected to the detection board on one side of the capacitor.

[0009] Preferably, the limiting mechanism includes a strip hole opened on the side of the positioning frame and extending in the up-down direction, and a connecting rod arranged in the front-to-back direction and rotatably installed on the bottom of the positioning frame, the front and rear ends of the connecting rod respectively extend from the strip holes on the corresponding positioning frame and are fixed with a pressure block, and when the connecting rod is rotated to a certain angle, the pressure block limits the positioning frame by pressing downward against the pressure plate.

[0010] Preferably, the movable mechanism comprises a tension spring fixed in the fixed shell and a movable block movably arranged in the fixed shell and connected to the tension spring, and one side of the movable block is fixedly connected to the detection plate.

[0011] Preferably, a positioning groove is provided on the top of the pressure plate, the inner cavity of the positioning groove is arc-shaped, and one side of the pressure block is arc-shaped.

[0012] Preferably, a connecting seat is rotatably connected to the surface of the connecting rod, and the top of the connecting seat is fixedly connected to the bottom of the mounting plate.

[0013] Preferably, the cross-sectional shapes of the movable block and the inner cavity of the fixed shell are both T-shaped, and the surface of the movable block is slidably connected to the inner wall of the fixed shell.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] The utility model can detect the capacitor in time through the cooperation of the movable mechanism and the pressure sensor, so that the staff can be informed in time when the capacitor is bulging, which not only reduces the danger when the compensation cabinet is used, but also reduces the impact on the power supply. At the same time, with the cooperation of the limit mechanism and the positioning rod, the capacitor can be quickly disassembled and assembled, so that the staff can replace the capacitor more conveniently, effectively improve the replacement efficiency of the capacitor, and solve the problem that the existing compensation cabinet cannot perform real-time detection on the capacitor when in use and is inconvenient to disassemble and assemble the capacitor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 It is a schematic diagram of a partial three-dimensional structure in the utility model;

[0018] Figure 3 It is a schematic diagram of a partial three-dimensional cross-sectional structure in the utility model;

[0019] Figure 4 It is a schematic diagram of a partial three-dimensional unfolded structure in the utility model;

[0020] Figure 5 It is a schematic diagram of a local three-dimensional cross-sectional structure in the utility model.

[0021] In the figure: 1. cabinet; 2. mounting plate; 3. capacitor; 4. mounting hole; 5. positioning frame; 6. positioning rod; 7. pressure plate; 8. limiting mechanism; 81. strip hole; 82. connecting rod; 83. pressure block; 9. supporting rod; 10. fixing shell; 11. pressure sensor; 12. movable mechanism; 121. tension spring; 122. movable block; 123. detection plate; 13. positioning groove; 14. connecting seat. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-5As shown, the reactive power compensation cabinet in this embodiment includes a cabinet body 1, which is composed of parts such as a cabinet box and a cabinet door. A power distribution device is installed inside the cabinet body 1. A mounting plate 2 is fixedly connected to the lower part of the inner cavity of the cabinet body 1, and a capacitor 3 is arranged on the upper part of the mounting plate 2. The capacitor 3 is used in conjunction with the power distribution device in the inner cavity of the cabinet body 1, so that the compensation cabinet can operate normally. A mounting hole 4 is opened on the mounting plate 2 at a position corresponding to the capacitor, and a positioning frame 5 is arranged at a relative position on both the front and rear sides of the mounting plate 2 that can be moved up and down. The inner wall of the positioning frame 5 is slidably connected to the side of the mounting plate 2, so that the positioning frame 5 will not easily have a large position deviation when moving. Two downward positioning rods 6 are fixedly connected to the inner side of the upper end of the positioning frame 5 above the mounting hole 4. When the capacitor is aligned with the mounting hole 4, the positioning frame 5 is provided with a plurality of positioning rods 6. When positioning, first place the capacitor on the mounting plate 2 (so that the positioning hole on the capacitor base at the bottom of the capacitor is aligned with the mounting hole 4), then control the positioning frame 5 to move downward relative to the mounting plate 2, and then the positioning rod 6 passes through the capacitor base and is plugged into the mounting hole 4, and the inner side of the upper end of the positioning frame 5 is pressed against the upper part of the capacitor base, so as to position the capacitor 3; the outer side of the bottom end of the positioning frame 5 is fixedly connected with a pressing plate 7, and the pressing plate 7 cooperates with the limiting mechanism 8 to limit the positioning frame 5, and the position of the positioning frame 5 can be controlled by operating the limiting mechanism 8, so as to facilitate the disassembly and assembly of the capacitor 3; when assembling, the capacitor 3 can be first installed on the mounting plate 2 outside the cabinet 1, and then the mounting plate 2 with the capacitor is fixed inside the cabinet 1.

[0024] Furthermore, a support rod 9 is fixed to the upper part of one side of the mounting plate 2, and a fixed shell 10 is fixedly connected to the top of the support rod 9. A pressure sensor 11 is installed inside the fixed shell 10, and the pressure sensor 11 is electrically connected to the alarm of the cabinet door on the cabinet body 1. A movable mechanism 12 for touching the pressure sensor 11 is arranged inside the fixed shell 10, and the movable mechanism 12 is connected to the detection board 123 on one side of the capacitor 3. The movable mechanism 12, the detection board 123 and the pressure sensor 11 are used in conjunction with each other. Under this action, after a bulge deformation appears on the surface of the capacitor 3, pressure is applied to the detection board 123 and the pressure is transmitted to the movable mechanism 12. The movable mechanism 12 can squeeze the pressure sensor 11, so that the pressure sensor 11 outputs an alarm signal to the outside (the pressure sensor 11 is connected to the alarm), so that the staff can promptly discover damage to the capacitor 3.

[0025] The limiting mechanism 8 includes a strip hole 81 opened on the side of the positioning frame 5 and extending in the up-down direction, and a connecting rod 82 arranged in the front-to-back direction and rotatably mounted on the bottom of the positioning frame 5. The front and rear ends of the connecting rod 82 extend out from the strip hole 81 on the corresponding positioning frame 5 and are fixed with a pressing block 83. When the connecting rod 82 is rotated to a certain angle, the pressing block 83 presses downward against the pressing plate 7 to limit the positioning frame 5. When the capacitor is in a fixed state, the pressing block 83 presses downward against the pressing plate 7 to make the positioning frame 5 in a low position. At this time, the positioning rod 6 passes through the positioning hole on the capacitor base and is inserted into the mounting hole 4. At the same time, the inner side of the upper end of the positioning frame 5 is pressed against the capacitor base, thereby positioning the capacitor 3. When the capacitor is released from the limit, the pressing block 83 can be no longer in contact with the pressing plate by rotating the connecting rod 82. 7, after the limit on the positioning frame 5 is released, the positioning frame 5 can slide upward, so that the positioning rod 6 can be moved out from the inside of the mounting hole 4, so as to facilitate the staff to replace the capacitor 3 after removal; a positioning groove 13 is provided on the top of the pressure plate 7, and the inner cavity of the positioning groove 13 is designed in an arc shape, and one side of the pressure block 83 is designed in an arc shape. The inner wall of the positioning groove 13 is slidably connected to the surface of the pressure block 83, under this action, the contact area between the pressure block 83 and the pressure plate 7 can be increased, so that the pressure block 83 is more stable when squeezing the pressure plate 7, and effectively improves the limiting effect of the limiting mechanism 8 on the capacitor 3; the surface of the connecting rod 82 is rotatably connected with a connecting seat 14, and the top of the connecting seat 14 is fixedly connected to the bottom of the mounting plate 2, under this action, the connecting rod 82 can be limited and installed on the mounting plate 2.

[0026] The movable mechanism 12 includes a tension spring 121, one side of the tension spring 121 is fixedly connected to the inner wall of the fixed shell 10, and the other end of the tension spring 121 is connected to a movable block 122, and the movable block 122 is movably arranged inside the fixed shell 10; in order to strengthen the limit of the movable block 122, the cross-sectional shape of the movable block 122 and the inner cavity of the fixed shell 10 can be set to be T-shaped, and the surface of the movable block 122 is slidably connected to the inner wall of the fixed shell 10, under this action, when the movable block 122 moves inside the fixed shell 10, the movable block 122 will not easily The movable block 122 is detached from the interior of the fixed shell 10, so that the movable block 122 is more stable when moving. The movable block 122 is used in conjunction with the pressure sensor 11. One side of the movable block 122 is fixedly connected to the detection plate 123. The surface of the detection plate 123 fits the surface of the capacitor 3. Under this action, when a bulge or deformation occurs on the surface of the capacitor 3, the detection plate 123 can push the movable block 122 to move, thereby driving the movable block 122 to move and squeeze the pressure sensor 11, so that the staff can quickly know that the capacitor 3 has a bulge.

[0027] It is worth noting that the technical features such as the cabinet 1 and the capacitor 3 proposed in this technical solution should be regarded as the prior art. The specific structure, working principle, and possible control method and spatial layout method of these technical features can be selected according to the conventional methods in the field, and this technical solution will not be further elaborated.

[0028] Working principle: First, when a bulge appears on the capacitor 3, the detection plate 123 will be pushed to move, and then the detection plate 123 will squeeze the pressure sensor 11 by driving the movable block 122 to move. The pressure sensor 11 can sound an alarm in cooperation with the alarm on the cabinet door, so that the staff can quickly know that the capacitor 3 has a bulge. When the capacitor 3 needs to be replaced, the staff rotates the connecting rod 82, and the pressure block 83 is driven to rotate under the action of the connecting rod 82, so that the pressure block 83 no longer conflicts with the pressure plate 7, and then the positioning frame 5 is pushed to drive the positioning rod 6 to disengage from the mounting hole 4 and the positioning hole on the capacitor base, and then the wires on the capacitor 3 are removed and disassembled. During installation, it is only necessary to align the positioning hole on the capacitor base with the mounting hole 4, and then rotate the connecting rod 82 to insert the positioning rod 6 inside the positioning frame 5 into the mounting hole 4 and the positioning hole through the cooperation of the pressure block 83.

[0029] 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 sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reactive power compensation cabinet, comprising a cabinet body (1) and a mounting plate (2) fixed below an inner cavity thereof, characterized in that: Also includes: A capacitor (3) is arranged on the upper part of the mounting plate (2), a mounting hole (4) is provided on the mounting plate (2) at a position corresponding to the capacitor, a positioning frame (5) is provided at a relative position on both the front and rear sides of the mounting plate (2) so as to be movable up and down, and two downward positioning rods (6) are fixedly connected to the inner side of the upper end of the positioning frame (5) above the mounting hole (4); A pressure plate (7) is fixedly connected to the outer side of the bottom end of the positioning frame (5), and the pressure plate (7) cooperates with the limiting mechanism (8) to limit the positioning frame (5). A support rod (9) is fixed to the upper part of one side of the mounting plate (2), and a fixed shell (10) is fixedly connected to the top of the support rod (9). A pressure sensor (11) is installed inside the fixed shell (10), and a movable mechanism (12) for contacting the pressure sensor (11) is arranged inside the fixed shell (10), and the movable mechanism (12) is connected to a detection plate (123) located on one side of the capacitor (3).

2. The reactive power compensation cabinet according to claim 1, characterized in that: The limiting mechanism (8) comprises a strip hole (81) formed on the side of the positioning frame (5) and extending in the up-down direction, and a connecting rod (82) arranged in the front-back direction and rotatably mounted on the bottom of the positioning frame (5), the front and rear ends of the connecting rod (82) respectively extending from the strip hole (81) on the corresponding positioning frame (5) and fixed with a pressing block (83), and when the connecting rod (82) is rotated to a certain angle, the pressing block (83) presses downward against the pressing plate (7) to limit the positioning frame (5).

3. The reactive power compensation cabinet according to claim 1, characterized in that: The movable mechanism (12) comprises a tension spring (121) fixed in the fixed shell (10) and a movable block (122) movably arranged in the fixed shell (10) and connected to the tension spring (121); one side of the movable block (122) is fixedly connected to the detection plate (123).

4. The reactive power compensation cabinet according to claim 2, characterized in that: A positioning groove (13) is provided on the top of the pressure plate (7), the inner cavity of the positioning groove (13) is designed to be arc-shaped, and one side of the pressure block (83) is also designed to be arc-shaped.

5. The reactive power compensation cabinet according to claim 2, characterized in that: A connecting seat (14) is rotatably connected to the surface of the connecting rod (82), and the top of the connecting seat (14) is fixedly connected to the bottom of the mounting plate (2).

6. The reactive power compensation cabinet according to claim 3, characterized in that: The cross-sectional shapes of the movable block (122) and the inner cavity of the fixed shell (10) are both T-shaped, and the surface of the movable block (122) is slidably connected to the inner wall of the fixed shell (10).

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