CN111537767A - Extra-high voltage direct current wall bushing high voltage test supporting platform and using method - Google Patents
Extra-high voltage direct current wall bushing high voltage test supporting platform and using method Download PDFInfo
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- CN111537767A CN111537767A CN202010326808.4A CN202010326808A CN111537767A CN 111537767 A CN111537767 A CN 111537767A CN 202010326808 A CN202010326808 A CN 202010326808A CN 111537767 A CN111537767 A CN 111537767A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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Abstract
The invention discloses a support platform for a high-voltage test of an extra-high voltage direct-current wall bushing and a using method, and relates to the field of direct-current transmission equipment tests, wherein the support platform comprises a support cylinder, a main platform, a bushing support, an installation flange, a deflector rod and a power part, the main platform is fixedly arranged at the upper end of the support cylinder, the main platform is provided with a first end surface and a second end surface in the length direction, the distance from the first end surface to a fixed connection point is greater than the distance from the second end surface to the fixed connection point, so that the center of gravity of the main platform is far away from the axis of the support cylinder, the main platform is provided with the bushing support, the bushing support is rotatably connected with the installation; one end of the deflector rod is fixedly connected with the mounting flange, the other end of the deflector rod is connected with the output end of the power piece, and the power piece drives the deflector rod to enable the extra-high voltage direct-current wall bushing to rotate and incline.
Description
Technical Field
The invention relates to the field of direct-current transmission equipment tests, in particular to a support platform for a high-voltage test of an extra-high-voltage direct-current wall bushing and a using method of the support platform.
Background
When a high-voltage test is carried out on the extra-high voltage direct-current wall bushing, the extra-high voltage direct-current wall bushing needs to be lifted to keep a certain safe distance from the ground, a high-voltage test supporting platform needs to be used, and the conventional supporting platform is poor in applicability to the extra-high voltage direct-current wall bushing high-voltage test. The main performance is as follows:
1) in the process of wall bushing mechanics or high voltage, test working conditions under different angles between the wall bushing and a wall body often need to be simulated, a conventional supporting platform device has no angle adjusting function or only has fixed angle adjustments, continuous adjustment cannot be achieved, and the whole installation process is complex, low in efficiency and poor in safety. The conventional device is usually the way to lift by crane the sleeve pipe with the crane level, and slowly adjust the sleeve pipe angle to a certain fixed value and install again on supporting the flange, when facing voltage level higher, during the great extra-high voltage wall bushing high voltage test of weight, the operation degree of difficulty in the angle adjustment process is great, it is consuming time more, in the hoist and mount process, if operate carelessly, will collide with the sleeve pipe body, cause the damage to the sleeve pipe, consequently need many people to protect in the installation, consume a large amount of manpowers, the test efficiency is low.
2) The extra-high voltage direct current wall bushing test voltage is high, and a conventional supporting platform does not have a voltage-sharing shielding ring, so that partial discharge is easily caused, and the test failure is caused. The extra-high voltage direct current wall bushing is heavy and has a center of gravity not located at the flange, the mounting flange of the conventional supporting platform is located at the center of the top of the supporting platform, and the center of gravity of the wall bushing is not located on the supporting column of the platform after the wall bushing is mounted, so that the wall bushing has a large dumping risk.
Disclosure of Invention
Aiming at the defects that the conventional supporting platform device in the prior art has no angle adjusting function or only has a plurality of fixed angle adjustments and the wall bushing has a larger tilting risk, the invention provides the supporting platform for the high-voltage test of the extra-high voltage direct-current wall bushing and the using method thereof.
In order to achieve the purpose, the technical scheme of the invention is as follows:
an extra-high voltage direct current wall bushing high voltage test supporting platform comprises a supporting cylinder, a main platform, a bushing support, an installation flange, a deflector rod and a power part,
the main platform is fixedly arranged at the upper end of the supporting cylinder, the main platform is provided with a first end face and a second end face in the length direction, the distance from the first end face to a fixed connection point is larger than the distance from the second end face to the fixed connection point, so that the center of gravity of the main platform is far away from the axis of the supporting cylinder and deviates, the main platform is provided with the sleeve support, the sleeve support is rotatably connected with the mounting flange, and the mounting flange is used for fixing the ultrahigh voltage direct-current wall bushing to be tested; one end of the shifting rod is fixedly connected with the mounting flange, the other end of the shifting rod is connected with the output end of the power piece, and the power piece drives the shifting rod to enable the extra-high voltage direct-current wall bushing to rotate and incline.
As mentioned above, the extra-high voltage direct current wall bushing high voltage test supporting platform, further, the power element is a hydraulic oil cylinder horizontally arranged, the hydraulic oil cylinder is installed on the main platform through an oil cylinder support, when the hydraulic oil cylinder does not act, the moving direction of a piston rod of the hydraulic oil cylinder is perpendicular to the shift lever, and when the hydraulic oil cylinder acts, the moving direction of the piston rod of the hydraulic oil cylinder forms an acute angle with the shift lever.
As for the extra-high voltage direct current wall bushing high voltage test supporting platform, a piston rod of the hydraulic oil cylinder is movably connected with one end of the deflector rod through a pin shaft.
According to the support platform for the ultrahigh voltage direct current wall bushing high voltage test, further, the hydraulic oil cylinder is communicated with the ground hydraulic station through the oil pipe which is arranged close to the support cylinder.
The extra-high voltage direct current wall bushing high voltage test supporting platform further comprises a platform diagonal brace, wherein one end of the platform diagonal brace is connected with the main platform, and the other end of the platform diagonal brace is connected with the supporting cylinder.
As the support platform for the extra-high voltage direct current wall bushing high voltage test, a platform voltage-sharing shielding ring is arranged on the main platform.
The extra-high voltage direct current wall bushing high voltage test supporting platform further comprises an electric control system and an angle sensor arranged on the bushing support, wherein the angle sensor is used for measuring the inclination angle of the extra-high voltage direct current wall bushing to be tested, and is in control signal connection with the electric control system.
According to the support platform for the ultrahigh voltage direct current wall bushing high voltage test, the lower end of the support cylinder is fixed on the ground through the bracket.
According to the extra-high voltage direct current wall bushing high voltage test supporting platform, further, the bushing mounting surface of the mounting flange is U-shaped, and the bushing support is rotationally connected with the mounting flange through the sliding bearing.
An extra-high voltage direct current wall bushing high voltage test method is carried out by using any one of the extra-high voltage direct current wall bushing high voltage test supporting platforms, and comprises the following steps:
s1: after the extra-high voltage direct-current wall bushing and the mounting flange are assembled, hoisting the extra-high voltage direct-current wall bushing by the lifting lugs on the mounting flange;
s2: mounting a mounting flange on a sleeve support, adjusting the extra-high voltage direct-current wall bushing to be horizontal and ensuring that the distance from the sleeve support to the position right above a support cylinder is equal to the distance between the gravity center position of the extra-high voltage direct-current wall bushing and the mounting flange;
s3: connecting the output end of the power piece with one end of a deflector rod;
s4: and connecting the power part with a control signal of an electric control system, and operating the electric control system to drive the extra-high voltage direct current wall bushing to rotate and incline.
Compared with the prior art, the invention has the beneficial effects that:
1. the installation is convenient, the fixing and installation of the wall bushing are completed through components such as an installation flange and a sliding bearing, the installation flange can be provided with a plurality of sets and matched with wall bushings of different models for use, and the whole set of device is safer and more convenient than the traditional mode;
2. the device has an angle adjusting function, a sliding bearing on a platform is used for rotating, a hydraulic oil cylinder pushes a deflector rod to drive a mounting flange to rotate and incline a sleeve between-15 degrees and +15 degrees, so that a wall bushing can be subjected to related tests of mechanics and electricity under the condition of simulating an actual mounting angle, the angle of the wall bushing can be adjusted after the wall bushing is mounted, and the angle adjusting speed can be adjusted by adjusting the oil charging and discharging speed of the hydraulic oil cylinder, so that the whole process is safer;
3. the device has a voltage-sharing shielding function, and voltage-sharing shielding rings are arranged on the periphery of a main platform of the device, so that a high-voltage partial discharge test of the extra-high voltage direct-current wall bushing can be effectively completed;
4. the atress is firm, and considering that extra-high voltage direct current wall bushing weight is big, and the outdoor side is long, the indoor focus that leads to is not in the flange department condition for a short time, and this device flange mounting position sets up at the indoor side part of deviant, falls the focus position directly over the support section of thick bamboo.
Drawings
FIG. 1 is a schematic structural view of the whole front side of a high-voltage test support platform of a wall bushing;
FIG. 2 is a left side view of the high voltage test support platform of the wall bushing of FIG. 1;
FIG. 3 is a schematic front structural view of a main platform of a high-voltage test support platform of a wall bushing;
FIG. 4 is a left side view of the main platform of the wall bushing high voltage test support platform of FIG. 3;
FIG. 5 is a schematic view of the installation of an extra-high voltage DC wall bushing.
Description of reference numerals: 1. an extra-high voltage direct current wall bushing; 2. a main platform; 21. a deflector rod; 22. a sleeve support; 23. a hydraulic cylinder; 24. a hydraulic oil cylinder support; 25. a pin shaft; 26. a sliding bearing; 27. a U-shaped mounting flange; 28. an angle sensor; 29. a platform grading and shielding ring; 3. a platform diagonal brace; 4. an oil pipe; 5. a support cylinder; 6. a bracket.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Example (b):
referring to fig. 1 to 5, a support platform for a high voltage test of an extra-high voltage direct current wall bushing 1 comprises a support cylinder 5, a main platform 2, a bushing support 22, an installation flange, a shift lever 21 and a power part. The supporting cylinder 5 is connected and installed through an upper supporting cylinder 5 and a lower supporting cylinder 5, the lower end of the supporting cylinder 5 is fixed on the ground through a bracket 6, the upper end of the supporting cylinder 5 is fixedly provided with a main platform 2, the main platform 2 is provided with a first end surface and a second end surface in the length direction, the distance from the first end surface to the fixed connection point is larger than the distance from the second end surface to the fixed connection point, so that the center of gravity of the main platform 2 is shifted away from the axis of the support cylinder 5, the main platform 2 of the present embodiment is approximately in the shape of a long plate, the center of gravity of the long plate-shaped main platform 2 is not coincident with the axis of the support cylinder 5, the main platform 2 and the supporting cylinder 5 are in an inverted L shape, and in some embodiments, a platform diagonal brace 3 may be provided, one end of the platform diagonal brace 3 is connected to the extending end of the main platform 2, and the other end is connected to the supporting cylinder 5, so as to form a stable triangular configuration to support and protect the main platform 2. The main platform 2 is welded with the sleeve support 22, the sleeve support 22 is rotatably connected with the mounting flange, preferably, the rotatable connection mode can utilize a sliding bearing 26, the sliding bearing 26 is installed on the sleeve support 22, and the mounting flange is connected with the sleeve support 22 through the sliding bearing 26 to realize rotation. The mounting flange is used for fixing the extra-high voltage direct current wall bushing 1 (or simply referred to as a wall bushing) to be tested, preferably, the bushing mounting surface of the mounting flange is U-shaped, and the U-shaped mounting flange 27 can be configured with a plurality of sets of wall bushings with different accommodating sizes so as to be suitable for the wall bushings with different sizes. Considering that the center of gravity of the extra-high voltage direct current wall bushing 1 is not located at the mounting flange position, the center of gravity (also referred to as the center here) of the main platform 2 is arranged to be offset towards the indoor side of the wall bushing. One end of the shifting lever 21 is fixedly connected with the mounting flange, the other end of the shifting lever is connected with the output end of the power piece, and the power piece drives the shifting lever 21 to enable the extra-high voltage direct-current wall bushing 1 to rotate and incline. The test support platform has an angle adjusting function, a sliding bearing 26 on the platform is used for rotating, a hydraulic oil cylinder 23 pushes a deflector rod 21 to drive a mounting flange to rotate and incline a sleeve between-15 degrees and +15 degrees, so that the wall bushing can carry out relevant tests of mechanics and electricity by simulating an actual mounting angle, the angle of the wall bushing is adjusted after the wall bushing is mounted, and the angle adjusting speed can be adjusted by adjusting the oil charging and discharging speed of the hydraulic oil cylinder 23, so that the whole process is safer;
in some embodiments, the power element is a hydraulic oil cylinder 23 arranged horizontally, the hydraulic oil cylinder 23 is mounted on the main platform 2 through an oil cylinder support, when the hydraulic oil cylinder 23 is not actuated, the moving direction of a piston rod of the hydraulic oil cylinder 23 is perpendicular to the shift lever 21, and when the hydraulic oil cylinder 23 is actuated, the moving direction of the piston rod of the hydraulic oil cylinder 23 forms an acute angle with the shift lever 21. Furthermore, a piston rod of the hydraulic oil cylinder 23 is movably connected with one end of the shift lever 21 through a pin shaft 25, the hydraulic oil cylinder 23 is communicated with a ground hydraulic station through an oil pipe 4 which is arranged close to the support cylinder 5, the ground hydraulic station extends from the main platform 2 to the ground hydraulic station along the support cylinder 5, and the ground hydraulic station adjusts the charging and discharging of hydraulic oil through an electric control system to move the shift lever 21, so that the wall bushing rotates by taking the sliding bearing 26 as a fulcrum. Preferably, the main platform 2 may be provided with grading and shielding rings, and the grading and shielding rings are installed at two ends of the main platform 2 and used for shielding an electric field during a high-voltage partial discharge test. Further, the device comprises an electric control system and an angle sensor 28 installed on the sleeve support 22, wherein the angle sensor 28 is used for measuring the inclination angle of the to-be-measured extra-high voltage direct current wall bushing 1, the angle sensor 28 is connected with the electric control system in a control signal mode, and the signal is transmitted to a ground electric cabinet through a signal line and displayed through a display screen.
Meanwhile, a high voltage test method of the extra-high voltage direct current wall bushing 1 is provided, which comprises the following steps: after the extra-high voltage direct current wall bushing 1 is assembled with the mounting flange, hoisting the extra-high voltage direct current wall bushing 1 by the lifting lugs on the mounting flange; mounting a mounting flange on a sleeve support 22, adjusting the extra-high voltage direct current wall bushing 1 to be horizontal and ensuring that the distance from the sleeve support 22 to the right above a support cylinder 5 is equal to the distance between the gravity center position of the extra-high voltage direct current wall bushing 1 and a mounting flange, considering the condition that the extra-high voltage direct current wall bushing 1 is heavy and the gravity center is not at the flange due to long outdoor side and short indoor side, the mounting position of the flange of the device is arranged at the part deviated to the indoor side, and the gravity center position falls to the right above the support cylinder 5, wherein the mounting flange is mounted on the sleeve support 22 through a sliding bearing 26, the wall bushing is horizontally hoisted and placed on the sliding bearing 26 during mounting and then an upper end cover of the sliding bearing 26 is mounted to finish the mounting of an integral structure, the method is very convenient, the fixing and the mounting of the wall bushing are finished through the mounting flange, the whole device is safer and more convenient than the traditional mode when being matched with wall bushing of different models for use; the output end of the power part is connected with one end of a deflector rod 21, the power part is a hydraulic oil cylinder 23, a piston rod of the hydraulic oil cylinder 23 is movably connected with one end of the deflector rod 21 through a pin shaft 25, the hydraulic oil cylinder 23 is communicated with a ground hydraulic station through an oil pipe 4, and the ground hydraulic station adjusts the charge and discharge of hydraulic oil through an electric control system to control the piston rod to move so as to drive the deflector rod 21 to move and enable the extra-high voltage direct-current wall bushing 1 to rotate and tilt.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention accordingly, and not to limit the protection scope of the present invention accordingly. All equivalent changes or modifications made in accordance with the spirit of the present disclosure are intended to be covered by the scope of the present disclosure.
Claims (10)
1. An extra-high voltage direct current wall bushing high voltage test supporting platform comprises a supporting cylinder and a main platform, and is characterized by also comprising a bushing support, an installation flange, a deflector rod and a power part,
the main platform is fixedly arranged at the upper end of the supporting cylinder, the main platform is provided with a first end face and a second end face in the length direction, the distance from the first end face to a fixed connection point is larger than the distance from the second end face to the fixed connection point, so that the center of gravity of the main platform is far away from the axis of the supporting cylinder and deviates, the main platform is provided with the sleeve support, the sleeve support is rotatably connected with the mounting flange, and the mounting flange is used for fixing the ultrahigh voltage direct-current wall bushing to be tested; one end of the shifting rod is fixedly connected with the mounting flange, the other end of the shifting rod is connected with the output end of the power piece, and the power piece drives the shifting rod to enable the extra-high voltage direct-current wall bushing to rotate and incline.
2. The extra-high voltage direct current wall bushing high voltage test supporting platform according to claim 1, wherein the power element is a hydraulic cylinder arranged horizontally, the hydraulic cylinder is mounted on the main platform through a cylinder support, when the hydraulic cylinder does not act, the movement direction of a piston rod of the hydraulic cylinder is perpendicular to the deflector rod, and when the hydraulic cylinder acts, the movement direction of the piston rod of the hydraulic cylinder forms an acute angle with the deflector rod.
3. The extra-high voltage direct current wall bushing high voltage test supporting platform according to claim 2, wherein a piston rod of the hydraulic oil cylinder is movably connected with one end of the deflector rod through a pin shaft.
4. The extra-high voltage direct current wall bushing high voltage test supporting platform according to claim 2, wherein the hydraulic oil cylinder is communicated with a ground hydraulic station through an oil pipe arranged close to the supporting cylinder.
5. The extra-high voltage direct current wall bushing high voltage test supporting platform of claim 1, further comprising a platform diagonal brace, wherein one end of the platform diagonal brace is connected with the main platform, and the other end of the platform diagonal brace is connected with the supporting cylinder.
6. The extra-high voltage direct current wall bushing high voltage test supporting platform according to claim 1, wherein a voltage-sharing shielding ring is arranged on the main platform.
7. The extra-high voltage direct current wall bushing high voltage test supporting platform according to claim 1, further comprising an electric control system and an angle sensor installed on the bushing support, wherein the angle sensor is used for measuring an inclination angle of an extra-high voltage direct current wall bushing to be measured, and the angle sensor is in signal connection with the electric control system.
8. The extra-high voltage direct current wall bushing high voltage test supporting platform of claim 1, wherein the lower end of the supporting cylinder is fixed on the ground through a bracket.
9. The extra-high voltage direct current wall bushing high voltage test supporting platform according to claim 1, wherein a bushing mounting surface of the mounting flange is U-shaped, and the bushing support is rotatably connected with the mounting flange through a sliding bearing.
10. An extra-high voltage direct current wall bushing high voltage test method which is carried out by using the extra-high voltage direct current wall bushing high voltage test supporting platform according to any one of claims 1 to 9, and comprises the following steps:
s1: after the extra-high voltage direct-current wall bushing and the mounting flange are assembled, hoisting the extra-high voltage direct-current wall bushing by the lifting lugs on the mounting flange;
s2: mounting a mounting flange on a sleeve support, adjusting the extra-high voltage direct-current wall bushing to be horizontal and ensuring that the distance from the sleeve support to the position right above a support cylinder is equal to the distance between the gravity center position of the extra-high voltage direct-current wall bushing and the mounting flange;
s3: connecting the output end of the power piece with one end of a deflector rod;
s4: and connecting the power part with a control signal of an electric control system, and operating the electric control system to drive the extra-high voltage direct current wall bushing to rotate and incline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010326808.4A CN111537767A (en) | 2020-04-23 | 2020-04-23 | Extra-high voltage direct current wall bushing high voltage test supporting platform and using method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010326808.4A CN111537767A (en) | 2020-04-23 | 2020-04-23 | Extra-high voltage direct current wall bushing high voltage test supporting platform and using method |
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| CN111537767A true CN111537767A (en) | 2020-08-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114236194A (en) * | 2021-12-17 | 2022-03-25 | 西安西电高压套管有限公司 | Movable supporting device for extra-high voltage wall bushing test |
| CN114688433A (en) * | 2022-03-22 | 2022-07-01 | 北京理工大学 | Sensor protection device and sensor assembly method adopting same |
| CN114743837A (en) * | 2021-12-16 | 2022-07-12 | 河南平高电气股份有限公司 | Circuit breaker sleeve assembling auxiliary device and circuit breaker sleeve assembling method |
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Application publication date: 20200814 |
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| RJ01 | Rejection of invention patent application after publication |