Special insulation platform for preventive test of 1000-kilovolt ultrahigh-voltage main transformer
By designing a special insulation platform for preventive tests of 1000 kV UHV main transformer, the problem of the risk of operators falling at high places during the test is solved, and the platform is stable, safe and flexible height adjustment is achieved, ensuring the safe and efficient execution of the test.
Patent Information
- Application Number
- CN202411808125.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-03-11
AI Technical Summary
In the preventive test of ultra-high voltage main transformer, the operator has the risk of falling from a high place due to the need for climbing operations, and the casing structure is complex, making it difficult to use traditional insulated straight ladders or herringbone ladders.
A special insulation platform for preventive testing of 1000 kV ultra-high voltage main transformer was designed, including an insulating frame, rod holding device, lifting device and positioning device, through which the platform can be stabilized, safe and flexible height adjustment.
The insulating platform reduces the risk of high altitude fall for operators, improves operational safety and work efficiency, and ensures safe and efficient testing and operation of UHV main transformers.
Smart Images
Figure CN119591027A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a special insulation platform for preventive testing of a 1000 kV ultra-high voltage main transformer, belonging to the field of electric power equipment. Background Art
[0002] Preventive testing of UHV main transformers is one of the most common, effective and important means to accurately grasp the operating status of UHV main transformers. Compared with conventional transformers, UHV transformers are structurally special. The external structure is an independent external voltage regulator, that is, the transformer body and the voltage regulator and compensation transformer are arranged in a sub-box. During preventive testing, operators must disconnect the electrical connection between the main transformer and the voltage regulator and compensation transformer. Due to the high height of the bushing, the connection test chuck needs to be climbed. Operators climbing the bushing may damage the bushing. The climbing operation safety belt cannot be hung, and the risk of operators falling from heights is high; the bushing base is uneven and the climbing stool cannot be used; the material characteristics of the pipe body are not suitable for insulating straight ladders, and the complex top structure of the transformer makes it impossible to place a herringbone ladder. Summary of the invention
[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a special insulation platform for preventive testing of a 1000 kV UHV main transformer with a reasonable structural design.
[0004] The technical solution adopted by the present invention to solve the above-mentioned problem is: the special insulation platform for preventive testing of 1000 kV ultra-high voltage main transformer has the following structural characteristics: it includes an insulation frame, a pole holding device, a lifting device and a positioning device, the pole holding device is installed at the bottom of the insulation frame, the lifting device is slidably installed on the insulation frame, the positioning device is installed on the lifting device, and the positioning device cooperates with the insulation frame; the insulation frame includes a left frame and a right frame, the left frame and the right frame are connected by connecting insulating rods, the left frame and the right frame both include horizontal insulating rods, vertical insulating rods and inclined insulating rods, and the horizontal insulating rods, vertical insulating rods and inclined insulating rods are connected in this way to form a triangular structure.
[0005] Furthermore, the pole holding device includes a pole holding base plate, a pole holding guard plate, a pole holding pad, a ratchet tensioner and a pole holding slot, the pole holding guard plate is fixed to the pole holding base plate, the pole holding slot is arranged on the pole holding guard plate, the pole holding pad is installed at the bottom of the pole holding base plate, and the ratchet tensioner is clamped in the pole holding slot.
[0006] Furthermore, the lifting device includes a first guide rod, a first guide wheel, a second guide rod, a second guide wheel, a winch, a lifting platform and a lifting sleeve, the two ends of the first guide rod and the second guide rod are respectively arranged on two vertical insulating rods, the first guide wheel and the second guide wheel are respectively installed on the first guide rod and the second guide rod, the winch is arranged on a connecting insulating rod connected to two horizontal insulating rods, and the wire rope of the winch is passed around the first guide wheel and the second guide wheel and connected to the lifting platform, the lifting platform is fixed to the lifting sleeve, and the lifting sleeve is mounted on the vertical insulating rod.
[0007] Furthermore, the positioning device includes a positioning seat, a positioning cavity, a positioning pin, a positioning plate, a positioning rod, a positioning spring, a positioning screw, a positioning nut and a positioning hole. The positioning seat is fixed on the lifting sleeve, the positioning cavity is arranged in the positioning seat, the positioning pin, positioning plate, positioning rod and positioning screw are fixed in sequence, the positioning spring is sleeved on the outside of the positioning rod, and the two ends of the positioning spring are respectively abutted against the positioning cavity and the positioning plate, the positioning nut is threadedly connected to the positioning screw, the positioning hole is arranged on the vertical insulating rod, and the positioning pin cooperates with the positioning hole.
[0008] Furthermore, the positioning rod is arranged in a rectangular structure.
[0009] Compared with the prior art, the present invention has the following advantages: the 1000 kV UHV main transformer preventive test dedicated insulation platform can assist operators to carry out lead removal work in a standardized manner, and facilitate testers to put back various test wiring dedicated insulation platforms. It reduces the risk of falling from heights during human operation, improves the personal safety of operators, and improves work efficiency; it realizes the safe and efficient completion of the UHV main transformer preventive test, and ensures the safe and stable operation of the UHV main transformer.
[0010] This special insulating platform is easy to install and dismantle, easy to carry, and has an adjustable height to meet the needs of high-altitude inspection and maintenance of casing. It makes the entire operation process smoother and faster, which not only reduces the physical consumption and operation risks of the operators, but also ensures the safety of the operators. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the three-dimensional structure of a special insulation platform for preventive testing of a 1000 kV ultra-high voltage main transformer according to an embodiment of the present invention.
[0012] Figure 2 It is a schematic cross-sectional structure diagram of a special insulation platform for preventive testing of a 1000 kV UHV main transformer according to an embodiment of the present invention.
[0013] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure of part A in FIG.
[0014] Figure 4It is a schematic diagram of the usage status structure of a special insulation platform for preventive testing of a 1000 kV ultra-high voltage main transformer according to an embodiment of the present invention.
[0015] In the figure: insulation frame 1, pole holding device 2, lifting device 3, positioning device 4, insulation platform 5, Horizontal insulating rod 11, vertical insulating rod 12, inclined insulating rod 13, connecting insulating rod 14, The pole bottom plate 21, the pole guard plate 22, the pole pad 23, the ratchet tensioner 24, the pole slot 25, The first guide rod 31, the first guide wheel 32, the second guide rod 33, the second guide wheel 34, the winch 35, the lifting platform 36, the lifting sleeve 37, Positioning seat 41 , positioning cavity 42 , positioning pin 43 , positioning plate 44 , positioning rod 45 , positioning spring 46 , positioning screw 47 , positioning nut 48 , positioning hole 49 . DETAILED DESCRIPTION
[0016] The present invention will be further described in detail below with reference to the accompanying drawings and by way of examples. The following examples are intended to explain the present invention but the present invention is not limited to the following examples.
[0017] Example
[0018] See also Figures 1 to 4 As shown, it should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, if there are references to terms such as "upper", "lower", "left", "right", "middle" and "one" in this specification, they are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.
[0019] The special insulating platform for preventive testing of 1000 kV ultra-high voltage main transformer in this embodiment includes an insulating frame 1, a pole holding device 2, a lifting device 3 and a positioning device 4. The pole holding device 2 is installed at the bottom of the insulating frame 1, the lifting device 3 is slidably installed on the insulating frame 1, the positioning device 4 is installed on the lifting device 3, and the positioning device 4 cooperates with the insulating frame 1.
[0020] The insulating frame 1 in this embodiment includes a left frame and a right frame, and the left frame and the right frame are connected by connecting insulating rods 14. The left frame and the right frame both include horizontal insulating rods 11, vertical insulating rods 12 and inclined insulating rods 13, and the horizontal insulating rods 11, vertical insulating rods 12 and inclined insulating rods 13 are connected in this way to form a triangular structure.
[0021] The pole holding device 2 in this embodiment includes a pole holding base plate 21, a pole holding guard plate 22, a pole holding pad block 23, a ratchet tensioner 24 and a pole holding slot 25. The pole holding guard plate 22 is fixed to the pole holding base plate 21, the pole holding slot 25 is arranged on the pole holding guard plate 22, the pole holding pad block 23 is installed at the bottom of the pole holding base plate 21, and the ratchet tensioner 24 is clamped in the pole holding slot 25.
[0022] The lifting device 3 in this embodiment includes a first guide rod 31, a first guide wheel 32, a second guide rod 33, a second guide wheel 34, a winch 35, a lifting platform 36 and a lifting sleeve 37. The two ends of the first guide rod 31 and the second guide rod 33 are respectively arranged on two vertical insulating rods 12, the first guide wheel 32 and the second guide wheel 34 are respectively installed on the first guide rod 31 and the second guide rod 33, the winch 35 is arranged on the connecting insulating rod 14 connected to the two horizontal insulating rods 11, and the wire rope of the winch 35 is passed around the first guide wheel 32 and the second guide wheel 34 and connected to the lifting platform 36, the lifting platform 36 is fixed to the lifting sleeve 37, and the lifting sleeve 37 is sleeved on the vertical insulating rod 12.
[0023] The positioning device 4 in this embodiment includes a positioning seat 41, a positioning cavity 42, a positioning pin 43, a positioning plate 44, a positioning rod 45, a positioning spring 46, a positioning screw 47, a positioning nut 48 and a positioning hole 49. The positioning seat 41 is fixed on the lifting sleeve 37, the positioning cavity 42 is arranged in the positioning seat 41, the positioning pin 43, the positioning plate 44, the positioning rod 45, and the positioning screw 47 are fixed in sequence, the positioning spring 46 is sleeved on the outside of the positioning rod 45, and the two ends of the positioning spring 46 are respectively abutted against the positioning cavity 42 and the positioning plate 44, the positioning nut 48 is threadedly connected with the positioning screw 47, the positioning hole 49 is arranged on the vertical insulating rod 12, and the positioning pin 43 cooperates with the positioning hole 49, and the positioning rod 45 is arranged in a rectangular structure.
[0024] Specifically, the 1000 kV UHV main transformer preventive test dedicated insulation platform has a rubber protective layer on the pole guard plate 22 to protect the cable terminal contact surface from damage when the insulation platform is in use; the ratchet tensioner 24 can be operated after the insulation platform and the cable terminal contact surface are in contact, so that the two are tightly fixed; the pole guard plate 22 is made of aluminum alloy, and the size of the semicircular hoop fits the metal cylindrical part at the bottom of the cable terminal porcelain bottle; One end of the wire rope is fixed to the winch 35, and the other end of the wire rope is connected to the lifting platform 36 with a hook; the lithium battery is used as the power source, and the buttons on the wireless control remote control are operated to control the forward and reverse rotation of the motor, thereby driving the wire rope to be reeled in and out, so as to realize the lifting and lowering of the lifting platform 36.
[0025] The pole guard plate 22 is fixed on the insulating platform 5 through the ratchet tensioner 24, so that the pole pad 23 is in contact with the insulating platform 5. When the operator stands on the lifting platform 36, the positioning nut 48 is turned to pull the positioning screw 47 so that the positioning seat 41 is in a compressed state, and the positioning pin 43 is disengaged from the positioning hole 49. At this time, the winch 35 can be used to control the retraction and release of the wire rope, so that the lifting platform 36 can be raised and lowered on the vertical insulating rod 12. The positioning nut 48 is turned in the opposite direction, and the positioning pin 43 can be bounced into the positioning hole 49 under the action of the positioning spring 46, so that the position of the lifting device 3 can be fixed to prevent the lifting device 3 from falling during operation, so as to improve its safety.
[0026] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is only an example of the structure of the present invention. All equivalent changes or simple changes made based on the structure, features and principles described in the patent concept of the present invention are included in the protection scope of the patent of the present invention. Technicians in the technical field of the present invention can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.
Claims
1. A special insulation platform for preventive testing of 1000 kV UHV main transformer, characterized by: The invention comprises an insulating frame (1), a pole holding device (2), a lifting device (3) and a positioning device (4), wherein the pole holding device (2) is mounted at the bottom of the insulating frame (1), the lifting device (3) is slidably mounted on the insulating frame (1), and the positioning device (4) is mounted on the lifting device (3), and the positioning device (4) cooperates with the insulating frame (1); the insulating frame (1) comprises a left frame and a right frame, wherein the left frame and the right frame are connected via a connecting insulating rod (14), and the left frame and the right frame both comprise a horizontal insulating rod (11), a vertical insulating rod (12) and an inclined insulating rod (13), wherein the horizontal insulating rod (11), the vertical insulating rod (12) and the inclined insulating rod (13) are connected thereby to form a triangular structure.
2. The 1000 kV UHV main transformer preventive test dedicated insulation platform according to claim 1 is characterized in that: The pole holding device (2) comprises a pole holding base plate (21), a pole holding guard plate (22), a pole holding pad (23), a ratchet tensioner (24) and a pole holding slot (25); the pole holding guard plate (22) is fixed to the pole holding base plate (21); the pole holding slot (25) is arranged on the pole holding guard plate (22); the pole holding pad (23) is installed at the bottom of the pole holding base plate (21); and the ratchet tensioner (24) is clamped in the pole holding slot (25).
3. The 1000 kV UHV main transformer preventive test dedicated insulation platform according to claim 1 is characterized in that: The lifting device (3) comprises a first guide rod (31), a first guide wheel (32), a second guide rod (33), a second guide wheel (34), a winch (35), a lifting platform (36) and a lifting sleeve (37). The two ends of the first guide rod (31) and the second guide rod (33) are respectively arranged on two vertical insulating rods (12). The first guide wheel (32) and the second guide wheel (34) are respectively installed on the first guide rod (31) and the second guide rod (33). The winch (35) is arranged on a connecting insulating rod (14) connected to the two horizontal insulating rods (11). The steel wire rope of the winch (35) passes around the first guide wheel (32) and the second guide wheel (34) and is connected to the lifting platform (36). The lifting platform (36) is fixed to the lifting sleeve (37). The lifting sleeve (37) is sleeved on the vertical insulating rod (12).
4. The 1000 kV UHV main transformer preventive test dedicated insulation platform according to claim 1 is characterized by: The positioning device (4) comprises a positioning seat (41), a positioning cavity (42), a positioning pin (43), a positioning plate (44), a positioning rod (45), a positioning spring (46), a positioning screw (47), a positioning nut (48) and a positioning hole (49); the positioning seat (41) is fixed on the lifting sleeve (37); the positioning cavity (42) is arranged in the positioning seat (41); the positioning pin (43), the positioning plate (44), the positioning rod (45) and the positioning screw (47) are fixed in sequence; the positioning spring (46) is sleeved outside the positioning rod (45); and two ends of the positioning spring (46) are respectively in contact with the positioning cavity (42) and the positioning plate (44); the positioning nut (48) is threadedly connected to the positioning screw (47); and the positioning hole (49) is arranged on the vertical insulating rod (12); and the positioning pin (43) cooperates with the positioning hole (49).
5. The special insulation platform for preventive testing of 1000 kV UHV main transformer according to claim 4 is characterized in that: The positioning rod (45) is arranged in a rectangular structure.