Shell structure of secondary line calibration instrument in substation

Abstract

The utility model relates to the technical field of secondary line calibration of power substations, and discloses a shell structure of a secondary line calibrator for power substations, including a shell, a calibrator body is arranged inside the shell, a support mechanism is arranged outside the shell, and a clamping mechanism is arranged at the bottom of the shell; the support mechanism includes four support seats, the outer surface of each support seat is fixedly connected to the outer surface of the shell, and the interior of each support seat is slidably connected with a support rod, the outer surface of each support rod is provided with equidistantly arranged clamping grooves, and the interior of each support seat is provided with a movable groove. The shell structure of the secondary line calibrator for power substations is disclosed, so that the secondary line calibrator for power substations can quickly adapt to uneven ground when placed on the ground for use, so that the secondary line calibrator for power substations can be placed on the ground for use more stably and reliably, and will not be excessively tilted or shaken, thereby increasing the functionality and use effect of the shell of the secondary line calibrator for power substations.

Description

Technical Field

[0001] The utility model relates to the technical field of secondary line calibration instruments for power transformer substations, in particular to a shell structure of a secondary line calibration instrument for power transformer substations. Background Art

[0002] In modern society, people's life and work are inseparable from electricity, and higher requirements are put forward for the safety and stability of the power grid. Substations and distribution stations are important components of the power grid. The rationality of their design has a significant impact on the improvement of power supply quality. At the same time, it is also a very common and very important task in engineering construction. It is highly standardized and technical. In the substation, a large number of secondary lines are needed to distribute the current circuit. In order to ensure the normal use of the secondary lines of the substation, it is usually necessary to use a line calibrator to calibrate the secondary lines. The line calibrator is mainly composed of a shell, an ammeter, a voltmeter, a detection circuit and other split-structure detection components.

[0003] The utility model with the existing authorization announcement number CN217787358U discloses a line calibrator, including a first detection body and a second detection body, the first detection body is provided with a first grounding terminal, a first wiring terminal and a current detection device, the first detection body is provided with a first power supply, and the first grounding terminal is electrically connected to the first wiring terminal through a first transmission line.

[0004] By adopting the above technical scheme, the first detection body and the second detection body are both highly integrated, and the two are arranged to be detachably connected for easy storage, and the calibration process is reliable and efficient. However, with the above technical scheme, when the existing substation secondary line calibrator is in use, its shell is usually just a plastic or metal frame shell, and the structure is very simple, and it cannot better assist the calibrator to calibrate the secondary line of the substation. In particular, when encountering uneven ground, the secondary line calibrator cannot be placed and supported stably, and cannot be firmly fixed on the metal frame of the substation, which makes it impossible to smoothly and quickly calibrate the secondary line of the substation at a high place, which greatly affects the functionality and use effect of the shell of the substation secondary line calibrator.

[0005] Therefore, those skilled in the art provide a shell structure of a secondary line calibrator for a power transformer substation to solve the problems raised in the above-mentioned background technology. Utility Model Content

[0006] The utility model aims to provide a shell structure of a secondary line calibration instrument for a transformer substation to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] The shell structure of the secondary line calibration instrument of the substation comprises a shell, the inside of which is provided with a line calibration instrument body, the outside of which is provided with a supporting mechanism, and the bottom of which is provided with a clamping mechanism;

[0009] The support mechanism includes four support seats, each of which has an outer surface fixedly connected to the outer surface of the shell, and each of which is slidably connected to a support rod inside the support seat, and each of the support rods has an outer surface provided with a clamping groove arranged at equal distances, and each of the support seats has a movable groove inside, and a limit block is clamped inside each movable groove, and the inner wall of each limit block is clamped with the support rod through the clamping groove, and the back of each limit block is fixedly connected to two compression springs, and one end of each compression spring away from the limit block is fixedly connected to the inner wall of the movable groove, and a pressing frame is slidably connected to the inside of each support seat, and a side of each pressing frame close to the limit block is fixedly connected to a side of the limit block away from the compression spring;

[0010] The clamping mechanism includes two rotating rods, and two receiving grooves are provided on the bottom surface of the shell. Each of the rotating rods is rotatably connected to the inside of the receiving groove. The outer surface of each rotating rod is fixedly connected to two fixing plates. The outer surface of each rotating rod is slidably connected to two clamping plates. The interior of each group of the fixing plates is rotatably connected to a bidirectional screw, and each clamping plate is threadedly connected to the bidirectional screw.

[0011] As a further solution of the utility model: a handle is fixedly connected to the left side of the shell, and a cover plate is movably hinged to the right side of the shell.

[0012] As a further solution of the utility model: two locking blocks are fixedly connected to the upper surface of the cover plate, and two locking frames are fixedly connected to the left side of the shell.

[0013] As a further solution of the utility model: the inner wall of each support seat is provided with a sliding groove, the outer surface of each support rod is fixedly connected with a sliding block, and each sliding block is slidably connected to the inside of the sliding groove.

[0014] As a further solution of the utility model: the bottom end of each support rod is fixedly connected with a wear-resistant pad, and the upper surface of each wear-resistant pad is in contact with the bottom surface of the support seat.

[0015] As a further solution of the utility model: the left end of each rotating rod passes through the shell and is fixedly connected to a positioning plate, four positioning holes are opened on the left side of the shell, and a positioning pin is clamped inside each positioning plate. The right ends of the two positioning pins pass through the positioning plate and extend to the inside of two of the positioning holes.

[0016] As a further solution of the utility model: the left end of each bidirectional screw is fixedly connected with a knob, and the outer surface of each knob is provided with anti-slip grooves arranged at equal distances.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model is provided with a pressing frame to cooperate with the support seat, and the pressing frame only needs to be manually pressed to force the limit block and the clamping groove on the support rod to disengage the clamping relationship, and the compression spring is contracted. At this time, the support rod will quickly slide downward out of the support seat due to gravity, and then the pressing frame is released to accumulate elastic force through the compression spring contraction, and the limit block is pushed to slide inside the moving groove and re-connect with the support rod through the clamping groove to fix the position of the extended support rod. When the secondary line calibrator of the substation is placed on the ground for use, it can quickly adapt to uneven ground, making the secondary line calibrator of the substation more stable and reliable when used in combination with the support mechanism, and will not be over-protruding. The function of increasing the functionality and use effect of the shell of the secondary line calibrator of the substation is to prevent the secondary line calibrator from tilting and shaking to a certain degree. By arranging a rotating rod to rotate inside the storage slot, the fixing plate can be adjusted from a parallel state to be perpendicular to the shell. At this time, it is only necessary to rotate the bidirectional screw and use the opposite direction threads on the bidirectional screw to drive the two clamping plates to move closer or farther away from each other, and then the shell can be fixed on the metal frame of the substation by clamping, so that the staff can use the secondary line calibrator of the substation to calibrate the secondary line of the substation at a high place, thereby further improving the functionality of the shell of the secondary line calibrator of the substation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the shell structure of the secondary line calibration instrument in a power substation;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the shell of the secondary line calibration instrument of the substation when viewed from above;

[0021] Figure 3 It is a schematic diagram of the cutaway three-dimensional structure of the support base in the shell structure of the secondary line calibration instrument of the power substation;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the clamping plate in the shell structure of the secondary line calibrator in the substation after it is unfolded.

[0023] In the figure: 1. Shell; 2. Alignment instrument body; 3. Support mechanism; 301. Support seat; 302. Support rod; 303. Snap-in slot; 304. Moving slot; 305. Limit block; 306. Compression spring; 307. Pressing frame; 4. Clamping mechanism; 401. Rotating rod; 402. Storage slot; 403. Fixed plate; 404. Clamping plate; 405. Bidirectional screw; 5. Handle; 6. Cover plate; 7. Locking frame; 8. Locking block; 9. Sliding slot; 10. Sliding block; 11. Wear-resistant pad; 12. Positioning plate; 13. Positioning hole; 14. Positioning pin; 15. Knob; 16. Anti-slip groove. DETAILED DESCRIPTION

[0024] See also Figure 1-4 The shell structure of the secondary line calibrator of the substation includes a shell 1, a line calibrator body 2 is arranged inside the shell 1, a supporting mechanism 3 is arranged outside the shell 1, a clamping mechanism 4 is arranged at the bottom of the shell 1, a handle 5 is fixedly connected to the left side of the shell 1, and a cover plate 6 is movably hinged on the right side of the shell 1. The handle 5 can facilitate the user to manually take the device, and the cover plate 6 can close the shell 1 to protect the internal line calibrator body 2.

[0025] The supporting mechanism 3 includes four supporting seats 301, and the outer surface of each supporting seat 301 is fixedly connected to the outer surface of the shell 1. Two locking blocks 8 are fixedly connected to the upper surface of the cover plate 6, and two locking frames 7 are fixedly connected to the left side of the shell 1. The locking blocks 8 cooperate with the locking frames 7 to fix the closed cover plate 6 to prevent the cover plate 6 from loosening due to shaking after closing, thereby increasing the safety of the cover plate 6.

[0026] The interior of each support seat 301 is slidably connected to a support rod 302, the outer surface of each support rod 302 is provided with equidistantly arranged snap-in grooves 303, the inner wall of each support seat 301 is provided with a sliding groove 9, the outer surface of each support rod 302 is fixedly connected to a sliding block 10, each sliding block 10 is slidably connected to the interior of the sliding groove 9, and the sliding block 10 slides inside the sliding groove 9, which can limit the downward sliding distance of the support rod 302, prevent the support rod 302 from loosening from the support seat 301, and increase the stability of the support rod 302 during use.

[0027] The interior of each support seat 301 is provided with a movable groove 304, and the interior of each movable groove 304 is clamped with a limit block 305, and the inner wall of each limit block 305 is clamped with the support rod 302 through the clamping groove 303. The back of each limit block 305 is fixedly connected with two compression springs 306, and the end of each compression spring 306 away from the limit block 305 is fixedly connected to the inner wall of the movable groove 304. The interior of each support seat 301 is slidably connected with a pressing frame 307, and the side surface of each pressing frame 307 close to the limit block 305 is fixedly connected to the side surface of the limit block 305 away from the compression spring 306. The bottom end of each support rod 302 is fixedly connected with a wear-resistant pad 11, and the upper surface of each wear-resistant pad 11 contacts the bottom surface of the support seat 301. The wear-resistant pad 11 can prevent the support rod 302 from directly contacting the ground, thereby reducing the wear on the bottom end of the support rod 302 and increasing the service life of the support rod 302.

[0028] The clamping mechanism 4 includes two rotating rods 401, and two receiving grooves 402 are provided on the bottom surface of the shell 1. Each rotating rod 401 is rotatably connected to the inside of the receiving groove 402. The left end of each rotating rod 401 passes through the shell 1 and is fixedly connected to the positioning plate 12. Four positioning holes 13 are provided on the left side of the shell 1. A positioning pin 14 is clamped inside each positioning plate 12. The right ends of the two positioning pins 14 pass through the positioning plate 12 and extend to the inside of two of the positioning holes 13. When the rotating rod 401 rotates, the positioning plate 12 will also rotate with the rotating rod 401, and then cooperate with the positioning pin 14 and the positioning holes 13 at different positions to fix the position of the rotating rod 401 after rotation adjustment, thereby increasing the reliability of the rotating rod 401 after rotation adjustment.

[0029] The outer surface of each rotating rod 401 is fixedly connected to two fixed plates 403, and the outer surface of each rotating rod 401 is slidably connected to two clamping plates 404. The interior of each set of fixed plates 403 is rotatably connected to a bidirectional screw 405, and each clamping plate 404 is threadedly connected to the bidirectional screw 405. The left end of each bidirectional screw 405 is fixedly connected to a knob 15, and the outer surface of each knob 15 is provided with anti-skid grooves 16 arranged at equal distances. The knob 15 and the anti-skid groove 16 can increase the convenience of rotating the bidirectional screw 405, and increase the convenience of manual operation of the bidirectional screw 405.

[0030] The working principle of the utility model is as follows: when in use, the calibration instrument body 2 is used in conjunction with the shell 1 and the conductor to calibrate the secondary line of the transformer substation. When the secondary line calibrator of the transformer substation needs to be placed on an uneven ground for use, it is only necessary to manually press the pressing frame 307 to force the limit block 305 to disengage the clamping relationship with the clamping groove 303 on the support rod 302, and let the compression spring 306 shrink. At this time, the support rod 302 will quickly slide downward out of the support seat 301 due to gravity, and then the pressing frame 307 is released and the elastic force accumulated by the compression spring 306 is contracted to push the limit block 305 to slide inside the moving groove 304 and re-engage with the support rod 302 through the clamping groove 303 to fix the position of the extended support rod 302. When the secondary line calibrator of the transformer substation is placed on the ground for use, it can quickly adapt to the uneven ground, making the secondary line calibrator of the transformer substation more stable and reliable when placed in conjunction with the support mechanism 3 for use. Excessive tilting and shaking will occur, which increases the functionality and use effect of the substation secondary line calibrator shell. By rotating the rotating rod 401 inside the storage slot 402, the fixing plate 403 can be adjusted from a parallel state to be perpendicular to the shell 1. At the same time, the positioning plate 12 will also rotate ninety degrees with the rotating rod 401, and then the positioning pin 14 is inserted into the corresponding positioning hole 13 to fix the adjusted position of the rotating rod 401 and the positioning plate 12. At this time, it is only necessary to rotate the bidirectional screw 405, and use the opposite direction threads on the bidirectional screw 405 to cooperate with the support of the fixing plate 403 to drive the two clamping plates 404 to move closer or farther away from each other, and then the shell 1 can be fixed on the substation metal frame by clamping, which is convenient for the staff to use the substation secondary line calibrator to calibrate the substation secondary line at a high place, further improving the functionality of the substation secondary line calibrator shell.

[0031] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A shell structure of a secondary line calibration instrument for a power substation, comprising a shell (1), characterized in that: A calibration instrument body (2) is arranged inside the shell (1), a supporting mechanism (3) is arranged outside the shell (1), and a clamping mechanism (4) is arranged at the bottom of the shell (1); The support mechanism (3) comprises four support seats (301), the outer surface of each support seat (301) is fixedly connected to the outer surface of the shell (1), the interior of each support seat (301) is slidably connected to a support rod (302), the outer surface of each support rod (302) is provided with equidistantly arranged snap-in grooves (303), the interior of each support seat (301) is provided with a moving groove (304), the interior of each moving groove (304) is snap-connected with a limiting block (305), and each limiting block (305) is The inner walls are all snap-fitted to the support rod (302) via the snap-fitting groove (303); the back of each of the limit blocks (305) is fixedly connected to two compression springs (306); one end of each of the compression springs (306) away from the limit block (305) is fixedly connected to the inner wall of the movable groove (304); the interior of each of the support seats (301) is slidably connected to a pressing frame (307); a side of each of the pressing frames (307) close to the limit block (305) is fixedly connected to a side of the limit block (305) away from the compression spring (306); The clamping mechanism (4) comprises two rotating rods (401), the bottom surface of the shell (1) is provided with two receiving grooves (402), each of the rotating rods (401) is rotatably connected inside the receiving groove (402), the outer surface of each rotating rod (401) is fixedly connected to two fixing plates (403), the outer surface of each rotating rod (401) is slidably connected to two clamping plates (404), the interior of each group of the fixing plates (403) is rotatably connected to a bidirectional screw (405), and each clamping plate (404) is threadedly connected to the bidirectional screw (405).

2. The shell structure of the secondary line calibration instrument for a power transformer substation according to claim 1 is characterized in that: A handle (5) is fixedly connected to the left side of the shell (1), and a cover plate (6) is movably hinged to the right side of the shell (1).

3. The shell structure of the secondary line calibration instrument for a power transformer substation according to claim 2 is characterized in that: Two locking blocks (8) are fixedly connected to the upper surface of the cover plate (6), and two locking frames (7) are fixedly connected to the left side of the shell (1).

4. The shell structure of the secondary line calibration instrument for a substation according to claim 1 is characterized in that: The inner wall of each support seat (301) is provided with a sliding groove (9), the outer surface of each support rod (302) is fixedly connected with a sliding block (10), and each sliding block (10) is slidably connected inside the sliding groove (9).

5. The shell structure of the secondary line calibration instrument for a power transformer substation according to claim 1 is characterized in that: The bottom end of each support rod (302) is fixedly connected to a wear-resistant pad (11), and the upper surface of each wear-resistant pad (11) is in contact with the bottom surface of the support seat (301).

6. The shell structure of the secondary line calibration instrument for a power transformer substation according to claim 1 is characterized in that: The left end of each rotating rod (401) passes through the shell (1) and is fixedly connected to a positioning plate (12); four positioning holes (13) are provided on the left side of the shell (1); a positioning pin (14) is clamped inside each positioning plate (12); the right ends of the two positioning pins (14) pass through the positioning plate (12) and extend to the inside of two of the positioning holes (13).

7. The shell structure of the secondary line calibration instrument for a power transformer substation according to claim 1 is characterized in that: The left end of each bidirectional screw rod (405) is fixedly connected to a knob (15), and the outer surface of each knob (15) is provided with anti-slip grooves (16) arranged at equal distances.

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