Multifunctional pressure-resistant device

Abstract

The utility model relates to a multifunctional voltage-withstanding device, which comprises a voltage-withstanding shell, a conduction module and a variable-diameter shell, the conduction module is arranged in a cavity of the pressure-resistant shell, and the variable-diameter shell is detachably mounted on the pressure-resistant shell; a bus interface suitable for being electrically connected with a transformer and at least one device interface matched with a 145kV circuit breaker are arranged on the voltage-resistant shell; insulators are arranged at the bus interface and the device interface; a first conductor is arranged on the insulator at the bus interface, and first contact seats are arranged on two opposite sides of the insulator at the device interface; the conduction module is electrically connected with the first conductor and the first contact seat located in the cavity of the voltage-withstanding shell. The variable-diameter shell comprises a large-diameter port and a small-diameter port, the large-diameter port and the small-diameter port are arranged in an ectopic mode, and the diameter of the large-diameter port is larger than that of the small-diameter port. Wherein the variable-diameter shell is detachably connected with the device interface of the voltage-withstanding shell through the large-diameter port, and the small-diameter port is suitable for installing a 126 kV circuit breaker or a 126 kV isolating switch.

Description

Technical Field

[0001] This application relates to the field of high-voltage electrical equipment testing technology, and in particular to a multi-functional withstand voltage device. Background Technology

[0002] GIS equipment is widely used in high-voltage power transmission and distribution due to its compact structure, high reliability, and excellent insulation performance. Among them, 126kV circuit breakers, 126kV disconnectors, and 145kV circuit breakers are important components of GIS equipment. These devices need to undergo withstand voltage tests before leaving the factory to ensure their reliable insulation performance. However, due to the different voltage levels of 126kV circuit breakers, 126kV disconnectors, and 145kV circuit breakers, the flange outer diameters at their interfaces differ. Traditional withstand voltage devices are usually designed and manufactured for equipment interfaces with a single flange outer diameter specification, making it difficult to adapt to the different flange interfaces of these three types of equipment. Therefore, manufacturers need to customize multiple withstand voltage devices of different specifications, which leads to increased production costs. Summary of the Invention

[0003] In view of this, this application proposes a multi-functional pressure-resistant device, comprising: a pressure-resistant housing, a conductive module, and a variable-diameter housing;

[0004] The conductive module is located inside the cavity of the pressure-resistant housing, and the variable diameter housing is detachably mounted on the pressure-resistant housing;

[0005] The pressure-resistant housing is equipped with a busbar interface suitable for electrical connection to a transformer and at least one device interface compatible with a 145kV circuit breaker.

[0006] Insulators are provided at both the busbar interface and the device interface, and the insulators are sealed to the pressure-resistant housing.

[0007] A first conductor is provided on the insulator at the busbar interface, and a first contact is provided on both sides of the insulator at the device interface; the conducting module is electrically connected to the first conductor and the first contact located in the cavity of the pressure-resistant housing, respectively.

[0008] The variable diameter housing includes a large-diameter port and a small-diameter port, which are positioned out of position, with the diameter of the large-diameter port being larger than that of the small-diameter port.

[0009] The variable diameter housing is detachably connected to the device interface of the pressure-resistant housing via the large diameter port, while the small diameter port is suitable for installing 126kV circuit breakers or 126kV disconnect switches.

[0010] In one possible implementation, the conduction module includes: a connecting conductor and a contact; both ends of the connecting conductor are respectively connected to the first conductor and the contact via fixing bolts; the end of the contact away from the connecting conductor is plugged into and detached from the first contact seat.

[0011] In one possible implementation, the conduction module further includes a second conductor; one end of the second conductor is connected to the connecting conductor, and the end of the second conductor facing away from the connecting conductor is provided with a shield.

[0012] In one possible implementation, an encapsulation cover is also included; an operation window is provided on the pressure-resistant housing and is located on the side adjacent to the bus interface, with the encapsulation cover positioned at the operation window.

[0013] In one possible implementation, the encapsulation cover is provided with an inflation valve; the inflation valve is in communication with the cavity of the pressure-resistant housing.

[0014] In one possible implementation, a transition housing is also included; the transition housing is disposed at the busbar interface; the transformer is disposed at the end of the transition housing opposite to the busbar interface; a second contact and a conductive head are provided inside the transition housing, the second contact is disposed on the insulator at the busbar interface, the conductive head is pluggable and detachable on the second contact, and the conductive head is electrically connected to the busbar on the transformer.

[0015] In one possible implementation, the device interface includes a first device interface and a second device interface; the first device interface is positioned opposite to the bus interface; and a cover plate is provided at the second device interface.

[0016] Beneficial effects of this application

[0017] This application utilizes a variable-diameter housing with a detachable connection between the large-diameter port of the variable-diameter housing and the device interface. When a withstand voltage test is required on 126kV equipment, the variable-diameter housing is installed at the device interface of the withstand voltage housing, and the flange interface of the 126kV equipment is connected to the device interface of the withstand voltage housing through the variable-diameter housing. When a withstand voltage test is required on a 145kV circuit breaker, the variable-diameter housing is removed, and the flange interface of the 145kV circuit breaker is directly connected to the device interface of the withstand voltage housing. The design of the variable-diameter housing allows the withstand voltage device to be compatible with both 126kV circuit breakers and 126kV isolators. The device offers three different specifications of GIS equipment: switches and 145kV circuit breakers. Manufacturers no longer need to customize multiple withstand voltage devices of different specifications, which improves the versatility and utilization of the withstand voltage devices and reduces operating costs. At the same time, the design of the large-diameter port of the variable diameter housing and the detachable connection of the device interface allows operators to easily install and remove the variable diameter housing to perform withstand voltage tests on the withstand voltage devices of different specifications without disassembling and reinstalling the entire withstand voltage device. This simplifies the operation process and improves work efficiency.

[0018] Other features and aspects of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.

[0020] Figure 1 This diagram shows a structural schematic of an embodiment of the pressure-resistant device of this application;

[0021] Figure 2 This diagram shows a structural schematic of another embodiment of the pressure-resistant device of this application;

[0022] Figure 3 A schematic diagram of another embodiment of the pressure-resistant device of this application is shown.

[0023] Pressure-resistant housing—100; Insulator—110; First conductor—120; First contact seat—130; Connecting conductor—210; Contact—220; Second conductor—230; Shielding head—240; Variable diameter housing—300; Encapsulation cover plate—410; Air inlet valve—420; Sealing plate—430; Transition housing—510; Second contact seat—520; Conductive head—530; Transformer—600. Detailed Implementation

[0024] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0025] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0028] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0029] This application proposes a multifunctional pressure-resistant device, such as... Figures 1 to 3 As shown, it includes: a pressure-resistant housing 100, a conductive module, and a variable-diameter housing 300; the conductive module is disposed within the cavity of the pressure-resistant housing 100, and the variable-diameter housing 300 is detachably mounted on the pressure-resistant housing 100; the pressure-resistant housing 100 is provided with a busbar interface suitable for electrically connecting a transformer 600 and at least one device interface matching a 145kV circuit breaker; both the busbar interface and the device interface are provided with insulators 110, and the insulators 110 are sealed to the pressure-resistant housing 100; the insulator 110 at the busbar interface is provided with a first conductor 120, and the device... The insulator 110 at the component interface is provided with first contact 130 on both sides; the conducting module is electrically connected to the first conductor 120 and the first contact 130 located in the cavity of the pressure-resistant housing 100; the variable diameter housing 300 includes a large-diameter port and a small-diameter port, which are arranged in opposite positions, with the diameter of the large-diameter port being larger than that of the small-diameter port. The variable diameter housing 300 is detachably connected to the component interface of the pressure-resistant housing 100 through the large-diameter port, and the small-diameter port is suitable for installing a 126kV circuit breaker or a 126kV disconnector.

[0030] It should be noted that the multi-functional withstand voltage device of this application is suitable for conducting withstand voltage tests on 126kV circuit breakers, 126kV disconnectors, and 145kV circuit breakers in GIS equipment. The withstand voltage housing 100 is suitable for providing an installation foundation for each device. The busbar interface is suitable for electrically connecting the transformer 600, thereby introducing the electrical energy output from the transformer 600 into the withstand voltage device. The device interface is suitable for connecting GIS equipment of different specifications. Insulators 110 are installed at the busbar interface and device interface and are sealed to the withstand voltage housing 100 to ensure the electrical insulation performance at each interface, while preventing external impurities, moisture, etc. from entering the interior of the withstand voltage housing 100, thus avoiding damage due to poor insulation performance. The first conductor 120, the first contact 130, and the pressure-resistant housing 100 are electrically connected. The first conductor 120 is installed on the insulator 110 at the bus interface and is used to transmit the current output by the transformer 600 to the continuity module. The first contact 130 located in the cavity of the pressure-resistant housing 100 is used to receive the current from the continuity module. The first contact 130 on the side away from the pressure-resistant housing 100 is electrically connected to the GIS device under test. The continuity module is used to realize the electrical connection between the first conductor 120 and the first contact 130 located in the cavity of the pressure-resistant housing 100, thereby transmitting the electrical energy introduced by the bus interface to the device interface and powering the GIS device connected to the device interface.

[0031] The large-diameter port of the reducing housing 300 is connected to the device interface of the withstand voltage housing 100 via a flange connection. Matching flanges are installed at both the large-diameter port of the reducing housing 300 and the device interface, and the two are fastened together with bolts to ensure the stability and sealing of the connection. The large-diameter port of the reducing housing 300 and the device interface are detachably connected, allowing operators to quickly disassemble or install the reducing housing 300 for different testing needs. The outer diameter of the flange at the interface of the 126kV circuit breaker or 126kV disconnector matches the small-diameter port of the reducing housing 300. The 126kV circuit breaker or 126kV disconnector is connected to the device interface of the withstand voltage device through the reducing housing 300, thus achieving compatibility with different specifications of equipment. The device interface is designed to be compatible with a 145kV circuit breaker, so that when the reducing housing 300 is removed, the 145kV circuit breaker is connected to the device interface, thus enabling the withstand voltage device of this application to simultaneously meet the withstand voltage testing requirements of both 126kV and 145kV equipment.

[0032] This application incorporates a variable-diameter housing 300, whose large-diameter port is detachably connected to the device interface. When a withstand voltage test is required on 126kV equipment, the variable-diameter housing 300 is installed at the device interface of the withstand voltage housing 100, and the flange interface of the 126kV equipment is connected to the device interface of the withstand voltage housing 100 via the variable-diameter housing 300. When a withstand voltage test is required on a 145kV circuit breaker, the variable-diameter housing 300 is removed, and the flange interface of the 145kV circuit breaker is directly connected to the device interface of the withstand voltage housing 100. The design of the variable-diameter housing 300 allows the withstand voltage device to simultaneously accommodate 126kV circuit breakers. The device supports three different specifications of GIS equipment: 126kV disconnector and 145kV circuit breaker. Manufacturers do not need to customize multiple withstand voltage devices of different specifications, which improves the versatility and utilization of the withstand voltage device and reduces operating costs. At the same time, the design of the large-diameter port of the variable diameter housing 300 and the device interface can be detachably connected. When it is necessary to test different specifications of GIS equipment, the withstand voltage test can be carried out by simply installing or removing the variable diameter housing 300, without disassembling and reinstalling the entire withstand voltage device. This simplifies the operation process and improves work efficiency.

[0033] In one possible implementation, the conduction module includes: a connecting conductor 210 and a contact 220; both ends of the connecting conductor 210 are connected to the first conductor 120 and the contact 220 respectively via fixing bolts; the end of the contact 220 facing away from the connecting conductor 210 is plugged into and detached from the first contact base 130. It should be noted that the connecting conductor 210 is used to electrically connect the first conductor 120 on the insulator 110 at the bus interface to the first contact base 130 on the insulator 110 at the device interface, so that current can be smoothly transmitted from the bus interface to the device interface. The connecting conductor 210 is connected to the first conductor 120 and the contact 220 respectively via fixing bolts, thereby ensuring the stability of the connection between the three. One end of the contact 220 is connected to the connecting conductor 210, and the other end is plugged into and detached from the first contact base 130, realizing a separable electrical connection between the conduction module and the first contact base 130 on the insulator 110 at the device interface.

[0034] Furthermore, the first contact 130 has a U-shaped cross-section. The opening of the first contact 130 connects to one side of the conductor 210, and the bottom of the first contact 130 is fixedly connected to the insulator 110 at the device interface. The first contact 130 matches the contact 220. The end of the contact 220 facing away from the connecting conductor 210 is inserted into the opening of the first contact 130. The plug-in connection method makes the connection and separation between the contact 220 and the first contact 130 very convenient. During the installation process, the connection can be completed simply by inserting the contact 220 into the first contact 130, without the need for complicated tools and cumbersome operations, thus improving work efficiency.

[0035] In one possible implementation, the insulators 110 at the busbar interface and device interface are both basin-type insulators 110.

[0036] In one possible implementation, the conduction module further includes a second conductor 230; one end of the second conductor 230 is connected to the connecting conductor 210, and the end of the second conductor 230 facing away from the connecting conductor 210 is provided with a shield head 240.

[0037] In one possible implementation, an encapsulation cover 410 is also included. An operation window is provided on the pressure-resistant housing 100, located on the side adjacent to the busbar interface. The encapsulation cover 410 is positioned at the operation window. It should be noted that the operation window has a circular hole structure. The design of the operation window facilitates the installation or removal of the conductive module inside the pressure-resistant housing 100 by the operator. The encapsulation cover 410 is used to seal the operation window in the non-operational state. The encapsulation cover 410, together with the insulators 110 at the device interface and busbar interface, forms a closed chamber within the pressure-resistant housing 100, thereby ensuring the stability of the electrical environment inside the pressure-resistant housing 100. By removing the encapsulation cover 410, the operator can easily operate the conductive module inside the pressure-resistant housing 100, avoiding complex disassembly of the pressure-resistant device, reducing workload, and improving work efficiency.

[0038] In one possible implementation, the encapsulation cover 410 is provided with an inflation valve 420; the inflation valve 420 is in communication with the cavity of the pressure-resistant housing 100; the inflation valve 420 is suitable for regulating the air pressure in the cavity of the pressure-resistant housing 100; by communicating with the cavity of the pressure-resistant housing 100, the inflation valve 420 can, as needed, inflate or expel gas from the pressure-resistant housing 100, thereby regulating the air pressure in the cavity of the pressure-resistant housing 100 and ensuring the stability of the air pressure in the pressure-resistant housing 100.

[0039] In one possible implementation, a transition housing 510 is also included; the transition housing 510 is disposed at the busbar interface; the transformer 600 is disposed at the end of the transition housing 510 away from the busbar interface; the transition housing 510 is provided with a second contact 520 and a conductive head 530, the second contact 520 is disposed on the insulator 110 at the busbar interface, the conductive head 530 is pluggable and detachable on the second contact 520, and the conductive head 530 is electrically connected to the busbar on the transformer 600.

[0040] It should be noted that the transition housing 510 is used to provide mechanical support and positioning for the transformer 600. The transformer 600 is installed at the busbar interface of the withstand voltage housing 100 through the transition housing 510, ensuring that the relative position between the transformer 600 and the withstand voltage device is accurate and stable. The second contact 520 is used to provide an accurate docking position for the conductive head 530. The second contact 520 is fixedly installed on the side of the insulator 110 at the busbar interface that is away from the first conductor 120, and one end of the first conductor 120 passes through the insulator 110 at the busbar interface and connects to the second contact 520. One end of the conductive head 530 is electrically connected to the busbar on the transformer 600, and the other end is plugged into and plugged into the second contact 520, thereby making the circuit between the transformer 600 and the busbar interface of the withstand voltage device conductive.

[0041] In one possible implementation, the device interface includes a first device interface and a second device interface; the first device interface is positioned opposite to the bus interface; and a sealing plate 430 is provided at the second device interface. It should be noted that the design of the first and second device interfaces, located adjacent to the second device interface, enriches the application scenarios of the pressure-resistant device. Operators can install the variable-diameter housing 300 at either device interface as needed to adapt to GIS equipment with different location requirements, improving the versatility and applicability of the pressure-resistant device. When the second device interface is not in use, the sealing plate 430 is used to seal it, thereby preventing dust, debris, etc., from entering the interior of the pressure-resistant housing 100 through the second device interface.

[0042] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A multi-functional pressure-resistant device, characterized in that, include: Pressure-resistant housing, conductive module, variable diameter housing; The conductive module is disposed within the cavity of the pressure-resistant housing, and the variable-diameter housing is detachably mounted on the pressure-resistant housing; The pressure-resistant housing is provided with a busbar interface suitable for electrical connection of transformer and at least one device interface that is compatible with a 145kV circuit breaker. Both the busbar interface and the device interface are equipped with insulators, and the insulators are sealed to the pressure-resistant housing. The insulator at the busbar interface is provided with a first conductor, and the insulator at the device interface is provided with first contacts on both opposite sides; the conducting module is electrically connected to the first conductor and the first contacts located in the pressure-resistant housing cavity, respectively; The variable diameter housing includes a large-diameter port and a small-diameter port, which are disposed in opposite positions, and the diameter of the large-diameter port is larger than the diameter of the small-diameter port. The variable diameter housing is detachably connected to the device interface of the pressure-resistant housing through the large diameter port, and the small diameter port is suitable for installing a 126kV circuit breaker or a 126kV disconnector.

2. The multi-functional pressure-resistant device according to claim 1, characterized in that, The conduction module includes: a connecting conductor and a contact; The two ends of the connecting conductor are respectively connected to the first conductor and the contact by fixing bolts; The end of the contact away from the connecting conductor is plugged into and disconnected from the first contact seat.

3. The multi-functional pressure-resistant device according to claim 2, characterized in that, The conduction module also includes a second conductor; One end of the second conductor is connected to the connecting conductor, and the end of the second conductor facing away from the connecting conductor is provided with a shield.

4. The multi-functional pressure-resistant device according to claim 1, characterized in that, It also includes the encapsulation cover; An operation window is provided on the pressure-resistant housing, and the operation window is located on the side adjacent to the bus interface. The encapsulation cover is disposed at the operation window.

5. The multi-functional pressure-resistant device according to claim 4, characterized in that, An inflation valve is provided on the encapsulation cover plate; The inflation valve is connected to the cavity of the pressure-resistant housing.

6. The multi-functional pressure-resistant device according to claim 1, characterized in that, It also includes a transition shell; The transition housing is located at the busbar interface; the transformer is located at the end of the transition housing opposite to the busbar interface. The transition housing is provided with a second contact seat and a conductive head. The second contact seat is disposed on the insulator at the bus interface, and the conductive head is pluggable and detachable on the second contact seat, and the conductive head is electrically connected to the bus on the transformer.

7. The multi-functional pressure-resistant device according to claim 1, characterized in that, The device interface includes a first device interface and a second device interface; The first device interface is positioned opposite to the bus interface; the second device interface is provided with a cover plate.

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