Testing device for oil-immersed transformer bushing

Abstract

The utility model discloses a testing device for an oil-immersed transformer bushing, which comprises an oil tank module and a crawling ladder arranged on the oil tank module, and is characterized in that the top surface of the oil tank module is provided with a vertical mounting flange seat, and the vertical mounting flange seat is used for mounting a vertical transformer bushing to be detected; the first side surface of the oil tank module is provided with an inclined installation flange seat, and the inclined installation flange seat is used for installing a to-be-detected inclined transformer bushing. The fourth side surface of the oil tank module is provided with a horizontal installation flange seat, and the horizontal installation flange seat is used for installing a horizontal transformer bushing to be detected. The testing device for the oil-immersed transformer bushing disclosed by the utility model is used for simulating a transformer, so that the height of a transformer bushing test is reduced, and wiring of testers is facilitated; the temperature of test environment air, the temperature of an immersed medium and the distance between the test sleeve and the grounding part are easier to control.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformer detection, and particularly relates to a test device for oil-immersed transformer bushings. Background Technique

[0002] The test of oil-immersed transformer bushings is usually carried out after being installed on the transformer. In normal tests, the bushings of extra-high voltage transformers are relatively high, usually higher than 5 - 10 meters. For the wiring layout of the bushing test, testers need to climb high continuously to arrange the cable positions. Long-time high-altitude operation by staff not only poses a high safety hazard but also is time-consuming and laborious in measurement.

[0003] In addition, according to the regulations of the national standard GB / T 4109 - 2008 "Insulating Bushings for Alternating Voltages above 1000V", the temperature of the ambient air for all tests and the immersed medium (if any) should be between 10°C and 40°C, and it is necessary to ensure that there is sufficient spacing between the bushing on the transformer and the grounding component to avoid direct flashover of air or the immersed medium to them. This is also the key to the bushing test operation. Therefore, how to efficiently conduct the bushing test is also a technical problem to be solved. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a test device for oil-immersed transformer bushings, which is used to simulate the transformer, reduces the height of the transformer bushing test, and facilitates the wiring of testers; for the temperature of the ambient air for the test and the immersed medium (if any), and the distance between the test bushing and the grounding component, it is easier to control.

[0005] Another purpose of the utility model is to provide a test device for oil-immersed transformer bushings, which can realize the insulation test and temperature rise test of different types of oil-immersed transformer bushings. By adjusting different installation positions and flanges, it can be applicable to test samples with different installation angles, thereby meeting the test requirements and being convenient and fast.

[0006] To achieve the above purposes, the utility model provides a test device for oil-immersed transformer bushings, including an oil tank module (used to simulate the transformer) and a ladder installed on the oil tank module, wherein:

[0007] A vertical installation flange seat is provided on the top surface of the oil tank module, and the vertical installation flange seat is used to install the vertical transformer bushing to be detected; an inclined installation flange seat is provided on the first side surface (A surface) of the oil tank module, and the inclined installation flange seat is used to install the inclined transformer bushing to be detected; a horizontal installation flange seat is provided on the fourth side surface (D surface) of the oil tank module, and the horizontal installation flange seat is used to install the horizontal transformer bushing to be detected;

[0008] The top surface of the fuel tank module is also provided with an exhaust hole and a first hot oil circulation interface;

[0009] A wiring inlet hole is further provided on the first side surface of the fuel tank module, and the wiring inlet hole is located below the inclined mounting flange seat;

[0010] An oil conservator (creating conditions for the thermal expansion and contraction of transformer oil. The oil conservator can adjust the amount of transformer oil to ensure that the fuel tank is filled with transformer oil) and a second hot oil circulation interface are provided on the second side surface (B surface) of the fuel tank module;

[0011] The ladder is installed on the third side surface (C surface) of the fuel tank module;

[0012] Lifting parts are provided on both the fourth side surface and the second side surface of the fuel tank module.

[0013] As a further preferred technical solution of the above technical solution, the (first to fourth) side surfaces of the fuel tank module are provided with first reinforcing ribs in the horizontal direction and second reinforcing ribs in the vertical direction.

[0014] As a further preferred technical solution of the above technical solution, both the first hot oil circulation interface and the second hot oil circulation interface are connected to an insulating oil heating and circulation device.

[0015] As a further preferred technical solution of the above technical solution, a bearing base is provided at the bottom of the fuel tank module.

[0016] As a further preferred technical solution of the above technical solution, a temperature controller is installed on the fuel tank module. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of a test device for an oil-immersed transformer bushing of the present utility model.

[0018] Figure 2 is a schematic structural diagram of a test device for an oil-immersed transformer bushing of the present utility model.

[0019] Reference Numerals: 1 - vertical transformer bushing; 2 - vertical mounting flange seat; 3 - oil conservator; 4 - inclined mounting flange seat; 5 - wiring inlet hole; 6 - bearing base; 7 - first reinforcing rib; 8 - second reinforcing rib; 9 - ladder; 10 - first hot oil circulation interface; 11 - second hot oil circulation interface; 12 - exhaust hole; 13 - lifting part; 14 - horizontal mounting flange seat. Detailed Description of the Invention

[0020] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present utility model defined in the following description can be applied to other implementation schemes, variant schemes, improvement schemes, equivalent schemes, and other technical schemes that do not depart from the spirit and scope of the present utility model.

[0021] The present utility model discloses a test device for an oil-immersed transformer bushing. The specific embodiments of the utility model will be further described below in conjunction with the preferred embodiments.

[0022] In the embodiments of the present utility model, those skilled in the art should note that the transformer bushings and insulating oil heating and circulation equipment involved in the present utility model can be regarded as the prior art.

[0023] Preferred embodiment.

[0024] As Figure 1-2 shown, the present utility model discloses a test device for an oil-immersed transformer bushing, including a fuel tank module (for simulating a transformer) and a ladder 9 installed on the fuel tank module, wherein:

[0025] A vertical installation flange seat 2 is provided on the top surface of the fuel tank module, and the vertical installation flange seat is used to install the vertical transformer bushing 1 to be detected; an inclined installation flange seat 4 is provided on the first side surface (A surface) of the fuel tank module, and the inclined installation flange seat is used to install the inclined transformer bushing to be detected; a horizontal installation flange seat 14 is provided on the fourth side surface (D surface) of the fuel tank module, and the horizontal installation flange seat is used to install the horizontal transformer bushing to be detected;

[0026] An exhaust hole 12 and a first hot oil circulation interface 10 are further provided on the top surface of the fuel tank module;

[0027] A wiring inlet hole 5 is further provided on the first side surface of the fuel tank module, and the wiring inlet hole 5 is located below the inclined installation flange seat 4;

[0028] An oil conservator 3 (creating conditions for the thermal expansion and contraction of the transformer oil. The oil conservator can adjust the amount of transformer oil to ensure that the fuel tank is filled with transformer oil) and a second hot oil circulation interface 11 are provided on the second side surface (B surface) of the fuel tank module;

[0029] The ladder 9 is installed on the third side surface (C surface) of the fuel tank module; [[ID=3l]]

[0030] Lifting parts 13 are provided on both the fourth side surface and the second side surface of the fuel tank module.

[0031] Specifically, the (first to fourth) sides of the fuel tank module are provided with first reinforcing ribs 7 in the horizontal direction and second reinforcing ribs 8 in the vertical direction.

[0032] More specifically, both the first hot oil circulation interface 10 and the second hot oil circulation interface 11 are connected to an insulating oil heating and circulation device.

[0033] Furthermore, a bearing base 6 is provided at the bottom of the fuel tank module.

[0034] Even further, a temperature controller is installed on the fuel tank module.

[0035] Regarding the present utility model:

[0036] From Figure 1 、 Figure 2 it can be seen that the present utility model uses this fuel tank to simulate a transformer, making the test state of the bushing infinitely close to the normal use state. This device is applicable to horizontal bushings, vertical bushings, and inclined bushings. By adjusting different installation positions and flanges, it can be applicable to bushing test samples with different installation angles. Only a vertical bushing is taken as an example in the figure. Markings 2, 4, and 14 are respectively used for the riser bases for the installation of vertical bushings, inclined bushings, and horizontal bushings. One bushing is installed, and the remaining flange seats are sealed with flange plates. The strength of the fuel tank is enhanced through horizontal and vertical reinforcing ribs to prevent the fuel tank from deforming during the test. Before the test, the bushing wiring work is carried out through the manhole. During the test, an external insulating oil heating and circulation device needs to be configured and connected to the hot oil circulation interface. Through the hot oil circulation, the temperature of the insulating oil in this device is maintained at a stable test temperature, and a temperature controller is equipped outside the fuel tank to observe and control the temperature of the insulating oil inside the fuel tank at all times. The bearing base is for the transportation of the fuel tank. The ladder facilitates the installation of the bushing by the staff.

[0037] It is worth mentioning that the technical features such as the transformer bushing and the insulating oil heating and circulation device involved in the patent application of the present utility model should be regarded as the prior art. The specific structures, working principles, and possible control methods and spatial layout methods of these technical features can be selected conventionally in the art and should not be regarded as the inventive points of the patent of the present utility model. The patent of the present utility model will not be further specifically elaborated.

[0038] For those skilled in the art, it is still possible to modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A test device for an oil-immersed transformer bushing, characterized in that, It includes a fuel tank module and a ladder installed on the fuel tank module, wherein: The top surface of the fuel tank module is provided with a vertical mounting flange seat which is used for mounting a vertical transformer bushing to be detected; the first side surface of the fuel tank module is provided with an inclined mounting flange seat which is used for mounting an inclined transformer bushing to be detected; the fourth side surface of the fuel tank module is provided with a horizontal mounting flange seat which is used for mounting a horizontal transformer bushing to be detected; The top surface of the fuel tank module is further provided with an exhaust hole and a first hot oil circulation interface; The first side surface of the fuel tank module is further provided with a wiring inlet hole which is located below the inclined mounting flange seat; The second side of the fuel tank module is provided with an oil conservator and a second hot oil circulation interface; The ladder is installed on the third side surface of the fuel tank module; Both the fourth side surface and the second side surface of the fuel tank module are provided with lifting parts.

2. The test device for an oil-immersed transformer bushing according to claim 1, characterized in that, The side surface of the fuel tank module is provided with a first reinforcing rib in the horizontal direction and a second reinforcing rib in the vertical direction.

3. The test device for the bushing of an oil-immersed transformer according to claim 2, characterized in that, Both the first hot oil circulation interface and the second hot oil circulation interface are connected to an insulating oil heating and circulation device.

4. The test device for the bushing of an oil-immersed transformer according to claim 3, characterized in that, The bottom of the fuel tank module is provided with a bearing base.

5. The test device for an oil-immersed transformer bushing according to claim 4, characterized in that, The fuel tank module is equipped with a temperature controller.

Images