Gas-insulated metal-enclosed switchgear

Abstract

The utility model relates to the technical field of gas-insulated switch devices, in particular to a gas-insulated metal-enclosed switchgear. The gas-insulated metal-enclosed switchgear comprises a main bus cylinder, a circuit breaker cylinder, a control cubicle and a circuit breaker mechanism case, the main bus cylinder is located above the circuit breaker cylinder, the main bus cylinder is provided with a cable-stayed support, the circuit breaker cylinder is provided with a bearing support, and the cable-stayed support is provided with a cable-stayed support. And the cable-stayed bracket and the bearing bracket form a suspension structure for suspending and supporting the control cubicle above the circuit breaker mechanism box so as to shorten the overall landing length of the gas-insulated metal-enclosed switchgear. According to the gas-insulated metal-enclosed switchgear, the control cubicle is fixed above the circuit breaker mechanism case through the combined action of the cable-stayed bracket and the bearing bracket, so that the layout of the gas-insulated metal-enclosed switchgear is optimized, and the occupied area of the gas-insulated metal-enclosed switchgear is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas insulation switch device technical field especially relates to a kind of gas insulation metal-enclosed switchgear. BACKGROUND

[0002] Gas insulation metal-enclosed switchgear is widely used in high-voltage transmission system due to its compact structure, small footprint, which can effectively save land resources and reduce power transmission cost. At the same time, the insulation performance of gas insulation metal-enclosed switchgear is superior, which can maintain stable operation under high-voltage environment and ensure the safety and reliability of power transmission system. In substation, gas insulation metal-enclosed switchgear is also widely used. Gas insulation metal-enclosed switchgear adopts modular design, which is convenient for installation and expansion, and can be flexibly configured according to the actual demand of substation. In addition, gas insulation metal-enclosed switchgear has high reliability and stability, which can maintain normal operation under harsh environmental conditions and ensure the safe and stable operation of substation.

[0003] With the rapid development of power industry and the continuous expansion of power grid scale, the demand for gas insulation metal-enclosed switchgear is increasing, and substation has entered urban or suburban area. The existing gas insulation metal-enclosed switchgear needs to be further optimized in layout to meet the current situation of smaller usable area in substation.

[0004] A kind of gas insulation metal-enclosed switchgear is disclosed in Chinese invention patent with authorization announcement number CN112968391B and authorization announcement date 2023.06.30. The gas insulation metal-enclosed switchgear includes a chassis, a circuit breaker cylinder, a circuit breaker mechanism box, a current transformer, a disconnecting switch, a small mechanism box and a control cabinet are arranged on the chassis. The circuit breaker mechanism box is arranged at one end of the circuit breaker cylinder. The circuit breaker cylinder is connected with the current transformer. The current transformer is connected with the disconnecting switch and the small mechanism box. The small mechanism is connected with the main bus cylinder upwards. The main bus cylinder is arranged above the circuit breaker cylinder and perpendicular to the circuit breaker. The control cabinet is arranged on one side of the circuit breaker mechanism box and spaced apart from the circuit breaker mechanism box. The circuit breaker cylinder, circuit breaker mechanism box, current transformer, disconnecting switch and small mechanism box of the gas insulation metal-enclosed switchgear are arranged compactly. However, the control cabinet of the gas insulation metal-enclosed switchgear is still a certain distance from other electrical elements of the gas insulation metal-enclosed switchgear. The overall floor spacing length of the gas insulation metal-enclosed switchgear is not significantly shortened. UTILITY MODEL CONTENTS

[0005] The utility model discloses a gas insulated metal enclosed switchgear, which is used to solve the problem that the distance between the control cabinet and other electrical components of the gas insulated metal enclosed switchgear is too long and the overall floor-to-ceiling length of the gas insulated metal enclosed switchgear is too long.

[0006] To solve the above problems, the utility model discloses a gas insulated metal enclosed switchgear adopts the following technical scheme:

[0007] A gas insulated metal enclosed switchgear comprises a main busbar cylinder, a circuit breaker cylinder, a control cabinet and a circuit breaker mechanism box, the main busbar cylinder is located above the circuit breaker cylinder, the main busbar cylinder is provided with a cable-stayed support, the circuit breaker cylinder is provided with a load-bearing support, the cable-stayed support and the load-bearing support form a suspension structure to suspend and support the control cabinet above the circuit breaker mechanism box, so as to shorten the overall floor-to-ceiling length of the gas insulated metal enclosed switchgear.

[0008] Further, the cable-stayed support comprises at least one pull rod.

[0009] Further, the load-bearing support comprises at least one support rod.

[0010] Further, one end of the cable-stayed support is fixed to the end cover of the main busbar cylinder, and the other end is fixed to the cabinet skeleton in the middle part of the control cabinet.

[0011] Further, one end of the load-bearing support is fixed to the end cover of the circuit breaker cylinder, and the other end is fixed to the cabinet skeleton in the lower part of the control cabinet.

[0012] Further, the distance between the bottom of the control cabinet and the ground is 1.3-1.5 m to place the circuit breaker mechanism box.

[0013] Further, the buttons, indicator lights and switches in the control cabinet are arranged in the middle and lower parts of the control cabinet.

[0014] Further, there is a gap between the control cabinet and the circuit breaker mechanism box.

[0015] Further, the control cabinet faces the inspection passage.

[0016] Further, the end cover of the circuit breaker cylinder is provided with a support sleeve to support the circuit breaker mechanism box.

[0017] Beneficial effect: the gas insulated metal enclosed switchgear is an improved invention. Through the scheme, the main busbar cylinder is located above the circuit breaker cylinder, and the current transmission is realized through the electrical connection. At the same time, the reasonable layout of the space position between them ensures the compactness and reliability of the gas insulated metal enclosed switchgear. The circuit breaker cylinder and the components in the cylinder jointly constitute the circuit breaker, and the circuit breaker mechanism box is used for controlling and operating the circuit breaker. The circuit breaker and the circuit breaker mechanism box are connected mechanically and electrically, realizing the control and protection of the power system. The cable-stayed support is arranged on the main busbar cylinder, and the load-bearing support is arranged on the circuit breaker cylinder, forming a suspension structure, which jointly supports and fixes the control cabinet above the circuit breaker mechanism box to shorten the overall floor spacing length of the gas insulated metal enclosed switchgear, saving the floor area of the gas insulated metal enclosed switchgear. The gas insulated metal enclosed switchgear of the utility model suspends and fixes the control cabinet above the circuit breaker mechanism box through the cooperation of the cable-stayed support and the load-bearing support, optimizes the layout of the gas insulated metal enclosed switchgear, and reduces the floor area of the gas insulated metal enclosed switchgear. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structure schematic view of an embodiment of the gas insulated metal enclosed switchgear of the utility model.

[0019] In the figure: 1, main busbar cylinder; 2, circuit breaker cylinder; 3, control cabinet; 4, circuit breaker mechanism box; 5, cable-stayed support; 6, load-bearing support; 7, support sleeve. DETAILED DESCRIPTION

[0020] The features and performances of the utility model are further described in detail in combination with the embodiments.

[0021] The gas insulated metal enclosed switchgear of the utility model suspends the control cabinet above the circuit breaker mechanism box through the use of the cable-stayed support and the load-bearing support to shorten, optimize the layout of the gas insulated metal enclosed switchgear, and reduce the floor area of the gas insulated metal enclosed switchgear.

[0022] As a basic scheme, such as Figure 1As shown, the gas insulated metal enclosed switchgear comprises a main busbar cylinder 1, a circuit breaker cylinder 2, a control cabinet 3 and a circuit breaker mechanism box 4; the main busbar cylinder 1 serves as a current transmission channel in the gas insulated metal enclosed switchgear, has excellent electrical performance and mechanical performance, and ensures stable current transmission and reliability of the equipment; the circuit breaker cylinder 2 and the components in the cylinder constitute a circuit breaker, which is used for opening and closing load current in a normal line and short-circuit current in a line fault state, and realizes control and protection of a power system; the main busbar cylinder 1 is located above the circuit breaker cylinder 2, and the main busbar cylinder 1 and the circuit breaker cylinder 2 realize current transmission between the circuit breaker and the main busbar through electrical connection. Meanwhile, the main busbar cylinder 1 and the circuit breaker cylinder 2 are reasonably arranged in space positions, which ensures compactness and reliability of the gas insulated metal enclosed switchgear; the main busbar cylinder 1 is provided with a cable-stayed support 5, and the circuit breaker cylinder 2 is provided with a bearing support 6; the cable-stayed support 5 and the bearing support 6 jointly act on the control cabinet 3, form a stable suspension and support structure, and suspend and fix the control cabinet 3 above the circuit breaker mechanism box 4 to shorten the overall floor length of the gas insulated metal enclosed switchgear; the cable-stayed support 5 provides horizontal support, and the bearing support 6 provides vertical support; the two supports cooperate with each other, and ensure stability of the control cabinet 3 in a three-dimensional space.

[0023] As a preferred embodiment, the cable-stayed support 5 comprises at least one pull rod, and the bearing support 6 comprises at least one support rod. The pull rod and the support rod support and fix the control cabinet 3 from different angles of the control cabinet 3, and ensure stability and safety of the control cabinet 3 in the running process. In order to further enhance the support and fixing effect of the cable-stayed support 5 and the bearing support 6, a plurality of pull rods or support rods can be arranged to fix and support the control cabinet 3 in other embodiments.

[0024] As a preferred embodiment, the oblique pull support 5 is fixed at one end on the end cover of the main busbar cylinder 1 and at the other end on the cabinet skeleton in the middle of the control cabinet 3. The oblique pull support 5 is fixed at one end on the end cover of the main busbar cylinder 1, and the main busbar cylinder 1 is connected with the control cabinet 3 in a manner of suspension or support, which not only ensures the stability of the main busbar cylinder 1 but also makes the whole gas insulated metal enclosed switchgear more compact. The other end of the oblique pull support 5 is fixed on the cabinet skeleton in the middle of the control cabinet 3, and the oblique pull support 5 provides support and stability of the control cabinet 3 in the transverse direction through the support of the oblique pull support 5, so that the control cabinet 3 is stably suspended above the circuit breaker mechanism box 4. This design not only saves space but also ensures the reliability and safety of the control cabinet 3. The oblique pull support 5, as a key component connecting the main busbar cylinder 1 and the control cabinet 3, has the functions of support and fixation, which ensures the stability and safety of the control cabinet 3 and makes the whole gas insulated metal enclosed switchgear more compact and beautiful, enhances the overall stability of the gas insulated metal enclosed switchgear, saves space and improves the aesthetic degree. In other optional embodiments, the oblique pull support 5 is fixed at one end on other positions of the main busbar cylinder 1 and at the other end on the cabinet skeleton on the top of the control cabinet 3 or other parts of the control cabinet 3, which can also achieve the suspension and support of the control cabinet 3, but it is relatively labor-saving to fix the oblique pull support 5 in the middle of the control cabinet 3.

[0025] As a preferred embodiment, the load-bearing support 6 is fixed at one end on the end cover of the circuit breaker cylinder 2 and at the other end on the cabinet skeleton at the bottom of the control cabinet 3. The load-bearing support 6 is fixed at one end on the end cover of the circuit breaker cylinder 2, and the circuit breaker cylinder 2 is connected with the control cabinet 3 in a manner of support, which not only ensures the stability of the circuit breaker cylinder 2 but also makes the whole gas insulated metal enclosed switchgear more compact. The other end of the load-bearing support 6 is fixed on the cabinet skeleton at the bottom of the control cabinet 3, and the load-bearing support 6 bears the weight of the whole control cabinet 3 through the support of the load-bearing support 6, which provides support and stability of the control cabinet 3 in the longitudinal direction, so that the control cabinet 3 is stably suspended above the circuit breaker mechanism box 4. This design not only saves space but also ensures the reliability and safety of the control cabinet 3. The load-bearing support 6, as a key component connecting the circuit breaker cylinder 2 and the control cabinet 3, has the functions of support and fixation, which ensures the stability and safety of the control cabinet 3 and makes the whole gas insulated metal enclosed switchgear more compact and beautiful, enhances the overall stability of the gas insulated metal enclosed switchgear, saves space and improves the aesthetic degree. In other optional embodiments, the load-bearing support 6 is fixed at one end on other positions of the circuit breaker cylinder 2 and at the other end on the cabinet skeleton on other parts of the control cabinet 3, which can also achieve the suspension and support of the control cabinet 3, but it is relatively labor-saving to fix the load-bearing support 6 at the bottom of the control cabinet 3.

[0026] As a preferred embodiment, the bottom of the control cabinet 3 is at a certain distance from the ground. The design of the control cabinet 3 at a certain height from the ground not only considers the convenience of operation, but also takes into account safety and maintenance. The circuit breaker mechanism box 4 is arranged below the control cabinet 3, and a certain distance is required at the bottom of the control cabinet 3 to meet the position space required by the circuit breaker mechanism box 4. The components inside the control cabinet 3 that need to be operated and observed are arranged in the middle and lower part of the control cabinet 3. When the bottom of the control cabinet 3 is at a certain distance from the ground, the components arranged in the middle and lower part of the control cabinet 3 are at a position convenient for the operator to perform routine maintenance and operation on the control cabinet 3. Specifically, when the bottom of the control cabinet 3 is about 1.4 meters from the ground, the components inside the control cabinet 3 are between about 1.5 meters and 1.8 meters from the ground.

[0027] As a preferred embodiment, the components inside the control cabinet 3 that need to be operated and observed are arranged in the middle and lower part of the control cabinet 3. The control cabinet 3 is the control center of the entire gas insulated metal enclosed switchgear, connected to the circuit breaker, current transformer, voltage transformer and other devices through cables and optical cables, to realize remote control and monitoring of these devices. At the same time, the control cabinet 3 also integrates various protection and measurement devices, such as buttons, indicator lights, switches, etc., for operating and controlling the operation of the gas insulated metal enclosed switchgear, as well as displaying the operating status and indication information of the device, to ensure the safe and stable operation of the power system. The components that need to be operated and observed are arranged in the middle and lower part of the control cabinet 3, so that the operator can easily access these components and perform necessary operations and controls. This layout reduces the difficulty and complexity of operation and improves operational efficiency. The layout of the components allows the operator to clearly see the operating status and indication information of the device. This is of great significance for timely detection and handling of device failures. Arranging the components in the middle and lower part of the control cabinet 3 can reduce the safety risks caused by misoperation or device failure. At the same time, this layout is also conducive to the maintenance and care of the components.

[0028] As a preferred embodiment, a gap is provided between the control cabinet 3 and the circuit breaker mechanism box 4. The control cabinet 3 is the control center of the entire gas insulated metal enclosed switchgear, connected to circuit breakers, current transformers, voltage transformers, disconnectors and other electrical components through cables or optical cables, realizing remote control and monitoring of these electrical components. At the same time, the control cabinet 3 also integrates corresponding protection and measurement devices to ensure the safe and stable operation of the power system. Therefore, when arranging the position of the control cabinet 3, the incoming line connecting the control cabinet 3 and the electrical components, the outgoing line from the control cabinet 3 to the main cable trench, and the heat dissipation of the devices inside the control cabinet 3 need to be considered. By providing a certain gap between the control cabinet 3 and the circuit breaker mechanism box 4, enough space is reserved for the incoming and outgoing lines of the control cabinet 3, not only considering electrical safety, but also considering the heat dissipation of the devices inside the control cabinet 3 and the convenience of maintenance. The existence of the gap avoids direct contact between the control cabinet 3 and the circuit breaker mechanism box 4, reducing the risk of electrical failure. At the same time, the gap also provides space for the heat dissipation of the control cabinet 3 and the circuit breaker mechanism box 4, helping to reduce the heat generated during equipment operation and improve the stability and reliability of the system.

[0029] As a preferred embodiment, the control cabinet 3 is arranged facing the inspection passage. As the core control unit of the gas insulated metal enclosed switchgear, the control cabinet 3 is closely connected to circuit breakers, disconnectors, current transformers, voltage transformers and other primary devices through cables and optical cables. These connections ensure that the control cabinet 3 can receive and send control instructions in real time, monitor the operating status of the power system, and perform corresponding protection and measurement functions. By arranging the control cabinet 3 facing the inspection passage, maintenance personnel can easily access the control cabinet 3 for daily inspection, maintenance and operation. The existence of the inspection passage not only improves the maintenance efficiency, but also ensures the safety of the maintenance personnel. It provides a convenient and safe inspection path for maintenance personnel, allowing them to easily access the control cabinet 3 and other critical equipment for daily inspection and maintenance. This improves maintenance efficiency, ensures the safety of maintenance personnel, and also facilitates daily maintenance and troubleshooting of equipment.

[0030] As a preferred embodiment, a support sleeve 7 is provided on the end cover of the circuit breaker cylinder 2 to support the connection of the circuit breaker mechanism box 4. The support sleeve 7 provides sufficient support to ensure that the circuit breaker mechanism box 4 can be stably suspended on the end cover of the circuit breaker cylinder 2, realizing off-the-ground installation, which can avoid direct contact of the mechanism box with the ground, reducing the influence of factors such as uneven ground or vibration on the operating stability of the mechanism box. The support sleeve 7 not only plays a supporting role, but also serves as a connecting component between the circuit breaker mechanism box 4 and the circuit breaker cylinder 2. Through the support sleeve 7, the electrical components in the mechanism box can be connected with other electrical components in the circuit breaker cylinder 2, realizing the transmission of current and the transmission of control signals.

[0031] The specific implementation process of the embodiment is as follows: the cable control cabinet 3 is hung and supported above the circuit breaker operating mechanism by arranging the inclined pull support 5 and the load bearing support 6 on the end covers of the gas insulated metal enclosed switchgear main bus cylinder 1 and the circuit breaker cylinder 2 respectively, and fixing them at the bottom and middle part of the cable control cabinet 3, the components and devices in the cable control cabinet 3 which need to be operated and observed are arranged at the middle and lower part of the cable control cabinet 3, and the height of the middle and lower part of the cable control cabinet 3 is between about 1.5 meters and 1.8 meters from the ground, which is easy to observe and convenient for the operator to perform daily maintenance and operation on the equipment in the cable control cabinet 3.

[0032] The above is only a preferred embodiment of the present application, and is not used to limit the present application, the patent protection scope of the present application is subject to the claims, any equivalent structural changes made by using the content of the specification and drawings of the present application should be included in the protection scope of the present application.

Claims

1. A gas insulated metal enclosed switchgear comprising a main bus duct, a circuit breaker duct, a control cubicle and a circuit breaker mechanism tank, the main bus duct being located above the circuit breaker duct, characterized in that, The main bus cylinder is provided with a cable-stayed support, the circuit breaker cylinder is provided with a load-bearing support, the cable-stayed support and the load-bearing support form a suspension structure to suspend and support the switch cabinet above the circuit breaker mechanism box, so as to shorten the overall floor length of the gas insulated metal enclosed switchgear.

2. Gas insulated metal-enclosed switchgear according to claim 1, characterized in that The cable-stayed support comprises at least one pull rod.

3. Gas insulated metal-enclosed switchgear according to claim 1 or 2, characterized in that The load-bearing support comprises at least one support rod.

4. Gas insulated metal-enclosed switchgear according to claim 3, characterized in that One end of the cable-stayed support is fixed on the end cover of the main bus cylinder, and the other end is fixed on the cabinet skeleton in the middle part of the switch cabinet.

5. Gas insulated metal-enclosed switchgear according to claim 4, characterized in that One end of the load-bearing support is fixed on the end cover of the circuit breaker cylinder, and the other end is fixed on the cabinet skeleton in the lower part of the switch cabinet.

6. Gas insulated metal-enclosed switchgear according to claim 5, characterized in that The bottom of the switch cabinet is 1.3-1.5 meters away from the ground to place the circuit breaker mechanism box.

7. Gas insulated metal-enclosed switchgear according to claim 6, characterized in that The buttons, indicator lights and switches in the switch cabinet are arranged in the middle and lower parts of the switch cabinet.

8. Gas insulated metal-enclosed switchgear according to claim 6 or 7, characterized in that There is a gap between the switch cabinet and the circuit breaker mechanism box.

9. The gas insulated metal enclosed switchgear according to claim 1 or 2, characterized in that, The switch cabinet is arranged to face the inspection passage.

10. The gas-insulated metal-enclosed switchgear according to claim 1 or 2, characterized in that, The end cover of the circuit breaker cylinder is provided with a support sleeve to support the connection of the circuit breaker mechanism box.

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