Basin-type insulator leak detection tool for high-voltage switch

Abstract

The invention discloses a basin-type insulator leak detection tool for a high-voltage switch, and the tool comprises a bottom plate, the middle part of the upper end of the bottom plate is fixedly provided with a vertical column, the upper end of the vertical column is movably provided with a rotating disc through a bearing, and the upper end of the rotating disc is provided with a detection mechanism. The detection mechanism comprises fixed discs, basin-type insulators, a support, a top plate, a first electric push rod, a sealing cover, a cavity, a piston and a second electric push rod, a plurality of fixed discs are uniformly and fixedly arranged on the periphery of the surface of the upper end of the rotating disc, the basin-type insulators are arranged at the upper ends of the fixed discs, and the support is fixedly arranged in the middle of the upper end of the rotating disc. The basin-type insulator leakage detection device is good in use effect, assembly line type detection work can be formed, no extra air tightness detection device is needed during detection, leakage can be rapidly detected through the pressure detection device and no special detection gas is needed as long as the basin-type insulator leaks, and therefore the leakage detection efficiency of the basin-type insulator can be greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of pot-type insulator detection, in particular to a pot-type insulator leakage detection tool for a high-voltage switch. Background Art

[0002] The pot insulator is an important component of power equipment. The pot insulator is generally made of insulating parts (such as porcelain parts) and metal accessories (such as steel feet, iron caps, flanges, etc.) glued or mechanically clamped with adhesive. These components together ensure the electrical, mechanical and thermal properties of the insulator. As an important component in GIS (gas-insulated metal-enclosed switchgear), the pot insulator has the functions of electrical insulation, isolation of air chambers, and support of conductors. Its quality has a great impact on the service life of the entire GIS equipment. Therefore, in addition to mechanical performance testing before assembly, it is also necessary to conduct size and surface quality inspections, partial discharge and radiographic flaw detection water pressure tests, power frequency withstand voltage, and air tightness tests to ensure its performance and quality. Among them, the air tightness test is mainly to check whether the pot insulator has problems such as air leakage, which is crucial to its normal operation in GIS. Through strict air tightness testing, GIS equipment can effectively avoid failures and safety hazards caused by air leakage during operation.

[0003] In the prior art, such detection devices, such as a pot-type insulator leakage detection tool in Chinese patent application number 202222435139.1, can detect multiple pot-type insulators at one time to determine the air tightness of multiple insulators by using high voltage. However, this device has the following disadvantages when used: 1. Although multiple pot-type insulators can be tested at one time, special gas is required, and after the test is completed, the air tightness of the pot-type insulators needs to be tested by the equipment in turn, which is inefficient and troublesome to use;

[0004] 2. The entire device cannot form a pipeline-style detection work, which results in low overall detection efficiency of the device. Therefore, a basin-type insulator leakage detection tool for high-voltage switches is needed to solve the above problem. Summary of the invention

[0005] The object of the present invention is to provide a leakage detection tool for pot-type insulators for high-voltage switches to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pot-type insulator leakage detection tool for a high-voltage switch, comprising a bottom plate, a column is fixedly arranged at the middle part of the upper end of the bottom plate, a rotating disk is movably arranged at the upper end of the column through a bearing, a detection mechanism is arranged at the upper end of the rotating disk, the detection mechanism comprises a fixed disk, a pot-type insulator, a bracket, a top plate, a first electric push rod, a sealing cover, a cavity, a piston, and a second electric push rod. A plurality of fixed disks are evenly fixedly arranged around the upper end surface of the rotating disk, a pot-type insulator is arranged at the upper end of the fixed disk, a bracket is fixedly arranged at the middle part of the upper end of the rotating disk, a top plate is fixedly arranged at the upper end of the bracket, a plurality of first electric push rods are evenly fixedly arranged at the upper end of the top plate, a sealing cover is fixedly arranged at the movable end of the first electric push rod, a cavity is fixedly arranged at the lower end of the rotating disk, a piston is movably engaged inside the cavity, the inside of the cavity is mutually conductive with the upper end of the fixed disk, an electric push rod is fixedly arranged at the lower end of the cavity, and the movable end of the electric push rod is fixedly connected to the piston.

[0007] Preferably, a gear ring is fixedly provided at the middle part of the lower end of the rotating disk, a motor is fixedly provided at one side of the surface of the column, a gear is fixedly provided at the output shaft end of the motor, the gear and the gear ring are meshed with each other, the motor can drive the gear to rotate, and thus the gear ring can be driven to rotate by the gear, and the pot-type insulator that needs to be inspected can be randomly driven to rotate, so as to drive the pot-type insulator to switch to different workstations; the present invention needs to design two workstations, one is the loading workstation of the workers, that is, the workstation where the pot-type insulator is fixedly placed on the fixed disk; the other workstation is the unloading workstation, and the sealing of the pot-type insulator is judged by observing whether the pot-type warning light is on; and unloading is carried out, the pot-type insulators with good sealing are placed aside, and the pot-type insulators with poor sealing are collected together.

[0008] Preferably, a squeezing ring is fixedly provided at the lower end of the sealing cover, and when the sealing cover moves downward, the squeezing ring can squeeze the edge of the pot-type insulator to be tested, so that the pot-type insulator can be tightly attached to the outer surface of the fixed disk.

[0009] Preferably, a plurality of raised blocks are evenly and fixedly provided on the outer surface of the upper end of the fixed disk, and the pot-type insulator to be inspected is sleeved on the surface through the raised blocks, which can play a role in quickly positioning the pot-type insulator. Subsequently, the sealing cover moves downward to extrude the pot-type insulator through the extrusion ring at the lower end of the sealing cover, so that the lower end of the pot-type insulator and the lower end of the fixed disk are sealed, and the upper end of the pot-type insulator and the extrusion ring are sealed.

[0010] Preferably, a connecting tube is fixedly provided at the lower end of the rotating disk on one side of the cavity, a pressure switch is fixedly provided at the lower end inside the connecting tube, a warning light is fixedly provided at the upper end of the rotating disk on one side of the fixed disk, and the warning light is electrically connected to the pressure switch.

[0011] Preferably, a speed reducer is provided between the motor and the gear, and the speed of the gear can be conveniently controlled by the speed reducer, thereby conveniently controlling the speed of the rotating disk.

[0012] Preferably, a plurality of reinforcing ribs are evenly and fixedly provided on the lower end surface of the rotating disk, and the structural strength of the rotating disk can be improved by the reinforcing ribs.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention can be provided with two workstations, and the two workstations can be symmetrical with respect to the center position of the rotating disk. One is a loading workstation for workers, that is, a workstation for placing pot-type insulators on a fixed disk; the other workstation is a unloading workstation, and the sealing of the pot-type insulators is judged by observing whether the pot-type warning light is on; and unloading is performed, the pot-type insulators with good sealing are placed aside, and the pot-type insulators with poor sealing are collected together; in this way, following the rotation of the rotating disk, the pot-type insulators to be detected are transferred between the two workstations, and the leakage detection work is completed during the transmission process, thereby forming a pipeline detection work to improve the detection efficiency.

[0015] 2. The present invention does not require an additional airtightness detection device during detection. As long as there is a leak in the pot-type insulator, the pressure detection device can quickly detect it without the need for special detection gas, thereby greatly improving the leakage detection efficiency of the pot-type insulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a pot-type insulator leakage detection tool for a high-voltage switch of the present invention;

[0017] Figure 2 A bottom view of the overall structure of a pot-type insulator leakage detection tool for a high-voltage switch of the present invention;

[0018] Figure 3 This is a front view of the overall structure of a pot-type insulator leakage detection tool for a high-voltage switch of the present invention;

[0019] Figure 4 This is a cross-sectional view of the overall structure of a pot-type insulator leakage detection tool for a high-voltage switch of the present invention;

[0020] Figure 5 The invention relates to a leak detection tool for a pot-type insulator for a high-voltage switch. Figure 4 A front view of

[0021] Figure 6 The present invention is a pot-type insulator leakage detection tool for high-voltage switches Figure 5 Magnified view at A in the middle.

[0022] In the figure: 1. bottom plate; 2. column; 3. rotating disk; 4. fixed disk; 5. basin insulator; 6. bracket; 7. top plate; 8. first electric push rod; 9. sealing cover; 10. cavity; 11. piston; 12. second electric push rod; 13. gear ring; 14. motor; 15. gear; 16. extrusion ring; 17. raised block; 18. connecting pipe; 19. pressure switch; 20. warning light; 21. reducer; 22. reinforcing rib. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-6 The present invention provides a technical solution: a pot-type insulator leak detection tool for a high-voltage switch, comprising a bottom plate 1, a column 2 is fixedly arranged at the middle of the upper end of the bottom plate 1, a rotating disk 3 is movably arranged at the upper end of the column 2 through a bearing, a detection mechanism is arranged at the upper end of the rotating disk 3, the detection mechanism comprises a fixed disk 4, a pot-type insulator 5, a bracket 6, a top plate 7, a first electric push rod 8, a sealing cover 9, a cavity 10, a piston 11, and a second electric push rod 12, a plurality of fixed disks 4 are evenly fixedly arranged around the upper end surface of the rotating disk 3, and a fixed disk 4 is arranged at the upper end There is a pot-type insulator 5, a bracket 6 is fixedly arranged in the middle of the upper end of the rotating disk 3, a top plate 7 is fixedly arranged on the upper end of the bracket 6, a plurality of first electric push rods 8 are evenly fixedly arranged on the upper end of the top plate 7, a sealing cover 9 is fixedly arranged on the movable end of the first electric push rod 8, a cavity 10 is fixedly arranged at the lower end of the rotating disk 3, a piston 11 is movably engaged inside the cavity 10, the inside of the cavity 10 is mutually conductive with the upper end of the fixed disk 4, an electric push rod is fixedly arranged at the lower end of the cavity 10, and the movable end of the electric push rod is fixedly connected to the piston 11.

[0025] A gear ring 13 is fixedly provided at the middle of the lower end of the rotating disk 3, and a motor 14 is fixedly provided on one side of the surface of the column 2. A gear 15 is fixedly provided at the output shaft end of the motor 14. The gear 15 and the gear ring 13 are meshed with each other. The motor 14 can drive the gear 15 to rotate, so that the gear ring 13 can be driven to rotate by the gear 15, and the pot-type insulator 5 that needs to be inspected can be driven to rotate randomly, so as to drive the pot-type insulator 5 to switch to different workstations; the present invention needs to design two workstations, one is the loading workstation of the worker, that is, the workstation where the pot-type insulator 5 is fixedly placed on the fixed disk 4; the other workstation is the unloading workstation, and the sealing of the pot-type insulator 5 is judged by observing whether the pot-type warning light 20 is on; and unloading is performed, the pot-type insulator 5 with good sealing is placed aside, and the pot-type insulator 5 with poor sealing is collected together;

[0026] The lower end of the sealing cover 9 is fixedly provided with an extrusion ring 16. When the sealing cover 9 moves downward, the edge of the pot-type insulator 5 to be inspected can be squeezed by the extrusion ring 16, so that the pot-type insulator 5 can be closely attached to the outer surface of the fixing plate 4.

[0027] The upper outer surface of the fixed plate 4 is evenly and fixedly provided with a plurality of protrusions 17. The pot-type insulator 5 to be inspected is sleeved on the surface of the protrusions 17, which can play a role in quickly positioning the pot-type insulator 5. Then, the sealing cover 9 is moved downward to squeeze the pot-type insulator 5 through the squeezing ring 16 at the lower end of the sealing cover 9, so that the lower end of the pot-type insulator 5 and the lower end of the fixed plate 4 are sealed, and the upper end of the pot-type insulator 5 and the squeezing ring 16 are sealed.

[0028] A connecting pipe 18 is fixedly provided at the lower end of the rotating disk 3 on one side of the cavity 10, a pressure switch 19 is fixedly provided at the lower end of the connecting pipe 18, and a warning light 20 is fixedly provided at the upper end of the rotating disk 3 on one side of the fixed disk 4, and the warning light 20 is electrically connected to the pressure switch 19;

[0029] A speed reducer 21 is provided between the motor 14 and the gear 15, and the speed reducer 21 can conveniently control the speed of the gear 15, thereby conveniently controlling the speed of the rotating disk 3;

[0030] A plurality of reinforcing ribs 22 are evenly and fixedly disposed on the lower end surface of the rotating disk 3 , and the structural strength of the rotating disk 3 can be improved by the reinforcing ribs 22 .

[0031] Working principle: When the device performs detection work, two workstations can be set, and the two workstations can be symmetrical or even at the center position of the rotating disk 3. One is the loading workstation of the worker, that is, the workstation for fixing the pot-type insulator 5 on the fixed disk 4; the other workstation is the unloading workstation, and the sealing of the pot-type insulator 5 is judged by observing whether the pot-type warning light 20 is on; and unloading is performed, the pot-type insulator 5 with good sealing is placed aside, and the pot-type insulator 5 with poor sealing is collected together; in this way, following the rotation of the rotating disk 3, the pot-type insulator 5 to be detected is transferred between the two workstations, and the leakage detection work is completed during this transmission process, so that a pipeline detection work can be formed;

[0032] The detection principle of the present device is that the pot-type insulator 5 to be detected is sleeved on its surface through the raised block 17, which can play a role in quickly positioning the pot-type insulator 5. Then the sealing cover 9 moves down and squeezes the pot-type insulator 5 through the squeezing ring 16 at the lower end of the sealing cover 9, so that the lower end of the pot-type insulator 5 and the lower end of the fixed disk 4 are sealed, and the upper end of the pot-type insulator 5 and the squeezing ring 16 are sealed. At this time, it is equivalent to simulating the fixed installation state of the pot-type insulator 5. At this time, if the pot-type insulator 5 has good sealing performance, then a closed space will be formed between the pot-type insulator 5 and the fixed disk 4. At this time, the second electric push rod 12 is extended to push the piston 11 upward, so that all the air inside the cavity 10 can be squeezed into the space between the pot-type insulator 5 and the fixed disk 4. At this time, if the pot-type insulator 5 has good sealing performance, then at this time, the connecting pipe 18 is sealed with the pot-type insulator 5 and the fixed disk 4. The space formed between the disks 4 is conductive, and the pressure switch 19 will be subjected to a pressure at this time. As long as the second electric push rod 12 squeezes all the air inside the cavity 10 into this space every time, and the pot-type insulator 5 has good sealing performance, then this pressure should be a fixed value. If the pot-type insulator 5 has poor sealing performance and there are leaks around or on the upper end, resulting in air leakage, then as the second electric push rod 12 extends, the air inside the cavity 10 is squeezed into this space, and the pressure felt by the pressure switch 19 should be less than this fixed value. In this way, the pressure card will control the warning light 20 to light up to remind the staff that the pot-type insulator 5 has poor sealing performance; thereby, it can play a role in leak detection, and the whole process is quick to detect, no special gas is required, and the warning light 20 can also be used to intuitively observe the sealing performance of the pot-type insulator 5, thereby improving the detection efficiency.

[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.

[0034] 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 leak detection tool for a pot-type insulator for a high-voltage switch, comprising a bottom plate (1), characterized in that: A column (2) is fixedly arranged at the middle of the upper end of the bottom plate (1); a rotating disk (3) is movably arranged at the upper end of the column (2) through a bearing; a detection mechanism is arranged at the upper end of the rotating disk (3); the detection mechanism comprises a fixed disk (4), a pot-type insulator (5), a bracket (6), a top plate (7), a first electric push rod (8), a sealing cover (9), a cavity (10), a piston (11), and a second electric push rod (12); a plurality of fixed disks (4) are evenly fixedly arranged around the upper end surface of the rotating disk (3); a pot-type insulator (5) is arranged at the upper end of the fixed disk (4); and the rotating disk (3) A bracket (6) is fixedly arranged at the middle of the upper end, a top plate (7) is fixedly arranged at the upper end of the bracket (6), a plurality of first electric push rods (8) are evenly fixedly arranged at the upper end of the top plate (7), a sealing cover (9) is fixedly arranged at the movable end of the first electric push rod (8), a cavity (10) is fixedly arranged at the lower end of the rotating disk (3), a piston (11) is movably engaged inside the cavity (10), the interior of the cavity (10) is mutually conductive with the upper end of the fixed disk (4), an electric push rod is fixedly arranged at the lower end of the cavity (10), and the movable end of the electric push rod is fixedly connected to the piston (11).

2. The leakage detection tool for pot-type insulators for high-voltage switches according to claim 1 is characterized in that: A gear ring (13) is fixedly arranged at the middle of the lower end of the rotating disk (3), a motor (14) is fixedly arranged on one side of the surface of the column (2), a gear (15) is fixedly arranged at the output shaft end of the motor (14), and the gear (15) and the gear ring (13) are meshed with each other.

3. The leakage detection tool for pot-type insulators for high-voltage switches according to claim 1 is characterized in that: A squeezing ring (16) is fixedly arranged at the lower end of the sealing cover (9).

4. The leakage detection tool for pot-type insulators for high-voltage switches according to claim 1 is characterized in that: A plurality of protrusions (17) are evenly and fixedly arranged on the outer surface of the upper end of the fixing plate (4).

5. The leakage detection tool for pot-type insulators for high-voltage switches according to claim 1 is characterized in that: A connecting pipe (18) is fixedly arranged at the lower end of the rotating disk (3) on one side of the cavity (10), a pressure switch (19) is fixedly arranged at the lower end inside the connecting pipe (18), and a warning light (20) is fixedly arranged at the upper end of the rotating disk (3) on one side of the fixed disk (4), and the warning light (20) is electrically connected to the pressure switch (19).

6. The leakage detection tool for pot-type insulators for high-voltage switches according to claim 2 is characterized in that: A speed reducer (21) is provided between the motor (14) and the gear (15).

7. The leakage detection tool for pot-type insulators for high-voltage switches according to claim 1 is characterized in that: A plurality of reinforcing ribs (22) are evenly and fixedly arranged on the lower end surface of the rotating disk (3).

Images