Oil-sf6 bushing gas side test new type lifting seat structure
By adopting a novel riser structure with flexible connectors and supports in oil-SF6 bushing transformers, the problem of manufacturing difficulties in conductor hard connections has been solved, and the flexibility and efficiency of the testing process have been improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU TOSHIBA SHUDIAN TRANSFORMER
- Filing Date
- 2025-07-08
- Publication Date
- 2026-06-09
AI Technical Summary
During testing, the conductor connections of existing oil-SF6 bushing transformers are rigid, which is difficult to manufacture and cannot be replaced, thus affecting testing efficiency.
A novel riser structure combining flexible and rigid connectors is used, including conductor cables, plugs, and flange seats. The flexible connectors enable adjustable conductor connections, the support members provide support force, and the equalizing spheres ensure a uniform electric field.
It simplifies the manufacturing process, improves testing efficiency, facilitates angle adjustment and length change, and reduces manufacturing difficulty and testing complexity.
Smart Images
Figure CN224341574U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of transformer testing, and in particular to a novel riser structure for testing the gas side of an oil-SF6 bushing. Background Technology
[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main functions include voltage transformation, current transformation, impedance transformation, isolation, and voltage stabilization (magnetic saturation transformer).
[0003] Transformers with oil-SF6 bushings require a riser to be connected during production and undergo SF6 testing before leaving the factory. In the existing technology, the conductors inside the riser for testing are rigidly connected, which places very strict requirements on design, manufacturing, and installation, making manufacturing difficult. At the same time, when the conductor length needs to be changed during testing, it cannot be replaced, which seriously affects the testing. Utility Model Content
[0004] The purpose of this application is to provide a novel riser structure for testing the gas side of an oil-SF6 casing, in order to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this application provides a novel riser structure for testing the gas side of an oil-SF6 casing, employing the following technical solution:
[0006] A novel riser structure for testing the gas side of an oil-SF6 bushing includes a riser body, an SF6-air bushing connected to the top of the riser body, an SF6 bushing connected to the bottom of the riser body, a flexible connector disposed within the riser body, the top of the flexible connector being able to be inserted into the SF6-air bushing, and a stud connecting the bottom of the flexible connector to the SF6 bushing.
[0007] Preferably, in order to provide support for the conductor cable and avoid excessive tension at the connector, a support member is fixed inside the body of the riser, and the flexible connector passes through the middle of the support member.
[0008] Preferably, in order to ensure that the support has greater strength and insulation performance, the support is I-shaped and made of wood.
[0009] The flexible connector includes a conductor cable, a plug and a flange seat. The plug and the flange seat are respectively fixed at both ends of the conductor cable. The plug is connected to the SF6 air bushing. The flange seat is connected to the SF6 bushing. The surface of the conductor cable is wrapped with an insulating layer.
[0010] Preferably, in order to change the electric field distribution and ensure a uniform electric field distribution, a pressure equalization ball is fitted on the surface of the flange seat and the SF6 bushing, and the pressure equalization ball is pressed onto the SF6 bushing by the flange seat.
[0011] In summary, this application includes at least one of the following beneficial technical effects: The novel riser structure for testing the gas side of the oil-SF6 bushing incorporates a flexible connector. Both ends of the flexible connector are rigidly connected to the SF6-air bushing and the SF6 bushing via a plug and a flange, respectively, while a conductor cable provides a flexible connection between the plug and the flange. Firstly, this design is relatively easy to manufacture and allows for angle adjustment. Secondly, when the test length of the flexible connector needs to be changed, only the middle conductor cable needs to be remade, making it convenient to use and greatly improving testing efficiency. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.
[0013] Figure 2 This is a cross-sectional structural schematic diagram used to illustrate the support member in the embodiments of this application.
[0014] Explanation of reference numerals in the attached drawings: 1. Elevator body; 2. SF6-air bushing; 3. SF6 bushing; 4. Flexible connector; 41. Conductor cable; 42. Connector; 43. Flange seat; 5. Support; 6. Equalizing ball. Detailed Implementation
[0015] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.
[0016] This application discloses a novel riser structure for conducting tests on the gas side of an oil-SF6 casing, referring to... Figure 1 The system includes a riser body 1, an SF6-air sleeve 2 connected to the top of the riser body 1, an SF6 sleeve 3 connected to the bottom of the riser body 1, a flexible connector 4 inside the riser body 1, the top of the flexible connector 4 being able to be inserted into the SF6-air sleeve 2, and a stud connecting the bottom of the flexible connector 4 to the SF6 sleeve 3.
[0017] The flexible connector 4 includes a conductor cable 41, a plug 42, and a flange seat 43. The plug 42 and the flange seat 43 are respectively fixed to both ends of the conductor cable 41. The plug 42 is connected to the SF6-air sleeve 2, and the flange seat 43 is connected to the SF6 sleeve 3. The surface of the conductor cable 41 is covered with an insulating layer.
[0018] Reference Figure 1-2The lifting seat body 1 has a support member 5 fixed inside, and a flexible connector 4 passes through the middle of the support member 5. The support member 5 is I-shaped and made of wood.
[0019] The support member 5 provides support for the conductor cable 41, preventing excessive tension at the connector 42.
[0020] Reference Figure 1 In order to change the electric field distribution and ensure that the electric field distribution is uniform, a pressure equalization ball 6 is fitted on the surface of the flange seat 43 and the SF6 sleeve 3. The pressure equalization ball is pressed onto the SF6 sleeve 3 by the flange seat 43.
[0021] The implementation principle of a novel riser structure for testing the gas side of an oil-SF6 casing according to an embodiment of this application is as follows:
[0022] By setting up a flexible connector 4, both ends of the flexible connector 4 are rigidly connected to the SF6-air sleeve 2 and SF6 sleeve 3 through the plug connector 42 and the flange seat 43 respectively, while the plug connector 42 and the flange seat 43 are flexibly connected by a conductor cable 41. First, it is easier to manufacture and the angle can be adjusted. Second, when the test length of the flexible connector 4 needs to be changed, only the middle conductor cable 41 needs to be remade, which is more convenient to use.
[0023] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A novel riser structure for testing the gas side of an oil-SF6 casing, comprising a riser body (1), wherein an SF6-air casing (2) is connected to the top of the riser body (1), and an SF6 casing (3) is connected to the bottom of the riser body (1), characterized in that: The lifting seat body (1) is provided with a flexible connector (4). The top end of the flexible connector (4) can be inserted into the SF6-air sleeve (2). The bottom end of the flexible connector (4) is connected to the SF6 sleeve (3) with a stud.
2. The novel riser structure for testing the gas side of the oil-SF6 casing according to claim 1, characterized in that: The lifting seat body (1) has a support member (5) fixed inside, and the flexible connector (4) passes through the middle of the support member (5).
3. The novel riser structure for testing the gas side of the oil-SF6 casing according to claim 2, characterized in that: The support member (5) is I-shaped and is made of wood.
4. The novel riser structure for testing the gas side of the oil-SF6 casing according to claim 1, characterized in that: The flexible connector (4) includes a conductor cable (41), a plug (42), and a flange seat (43). The plug (42) and the flange seat (43) are respectively fixed at both ends of the conductor cable (41). The plug (42) is connected to the SF6-air sleeve (2). The flange seat (43) is connected to the SF6 sleeve (3). The surface of the conductor cable (41) is covered with an insulating layer.
5. The novel riser structure for testing the gas side of an oil-SF6 casing according to claim 4, characterized in that: The flange seat (43) and the surface of the SF6 sleeve (3) are fitted with equalizing ball (6), and the equalizing ball is pressed onto the SF6 sleeve (3) by the flange seat (43).