Load switch fuse combination cabinet

Abstract

The utility model discloses a load switch and fuse combined cabinet, which comprises a cabinet body, and a load switch, a fuse and an operating mechanism which are arranged in the cabinet body. The fuse comprises a fuse sleeve barrel with a built-in fuse and a fuse sleeve cover covering one side of the fuse sleeve barrel, and the operating mechanism is arranged on the fuse sleeve cover. The operating mechanism comprises an interlocking plate, a transmission connecting rod, a tripping indication assembly and an interlocking hook assembly which are in transmission connection in sequence. Wherein the interlocking hook assembly is connected with the load switch. Once the operating mechanism is triggered, the interlocking plate can quickly push the transmission connecting rod so as to drive the tripping indication assembly to move. The series of actions finally drive the interlocking hook assembly, so that the load switch can cut off the circuit. According to the utility model, all the components in the operating mechanism are tightly matched and linked, so that a circuit can be quickly and accurately cut off, and the risk of equipment damage is effectively avoided. And meanwhile, the compactness of the cabinet body can be ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to but are not limited to high voltage distribution equipment technical field, especially in a kind of load switch fuse combination cabinet. BACKGROUND

[0002] In load switch fuse combination cabinet, the layout of fuse sleeve bucket often adopts relatively loose mode, such as linear arrangement or relatively dispersed arrangement, which not only increases the floor area of cabinet, but also limits the application of combination cabinet in narrow space. Especially, when the fuse sleeve bucket layout is "triangle", due to the irregularity of shape, it is more difficult to realize the compact design of cabinet body while ensuring the effective operation of operating mechanism. In addition, the traditional operating mechanism may have problems such as unsmooth linkage, inaccurate indication or unreliable interlocking in design, which may affect the safety and stability of load switch fuse combination cabinet. In an emergency, if the operating mechanism cannot quickly and accurately cut off the circuit, it may cause equipment damage or even casualties. Therefore, there is an urgent need for a load switch fuse combination cabinet that can overcome the above defects. SUMMARY

[0003] In view of the above problems, the utility model provides a load switch fuse combination cabinet, which can quickly and accurately cut off the circuit, thereby effectively avoiding the risk of equipment damage. At the same time, it ensures the compactness of the cabinet body.

[0004] To achieve the above purpose, the utility model provides the following technical scheme:

[0005] The utility model provides a load switch fuse combination cabinet, which comprises a cabinet body, a load switch, a fuse and an operating mechanism installed inside the cabinet body; the fuse comprises a fuse sleeve bucket with a fuse inside, and a fuse sleeve cover cover on one side of the fuse sleeve bucket; the operating mechanism is arranged on the fuse sleeve cover; the operating mechanism comprises an interlocking plate, a transmission link, a trip indication assembly and an interlocking hook assembly connected in sequence; the interlocking hook assembly is connected with the load switch; when the operating mechanism is triggered, the interlocking plate pushes the transmission link to drive the trip indication assembly to move, so that the trip indication assembly drives the interlocking hook assembly to drive the load switch to cut off the circuit.

[0006] Further, the fuse comprises a fuse tube striker, which is connected with the fuse; when the fuse is fused, the fuse tube striker triggers the operating mechanism.

[0007] Further, the interlocking hook assembly comprises a first interlocking hook and a second interlocking hook; the first interlocking hook is connected with the load switch, and the second interlocking hook is connected with the trip indication assembly.

[0008] Further, the combination cabinet is provided with a fixed plate, and the fuse barrel is fixed on the fixed plate.

[0009] Further, the interlocking plate is provided with an interlocking pin hole, and the transmission connecting rod is arranged in the interlocking pin hole.

[0010] Further, the tripping indication assembly is provided with a first pin hole and a second pin hole, the transmission connecting rod is arranged in the first pin hole, and the second interlocking hook is arranged in the second pin hole.

[0011] Further, the load switch comprises a movable contact and a static contact, and when the movable contact and the static contact are separated, the circuit is disconnected.

[0012] Further, the fuse sleeve cover is provided with a handle baffle, and the handle baffle is used to trigger the movement of the interlocking plate.

[0013] Further, the combination cabinet is provided with a detection assembly, and the detection assembly is used to detect the circuit state.

[0014] Further, the detection assembly comprises a current transformer and a voltage transformer, the current transformer is used to monitor the current of the circuit, and the voltage transformer is used to monitor the voltage of the circuit.

[0015] The beneficial effects of the utility model include:

[0016] 1. The operating mechanism is arranged on the fuse sleeve cover, and the transmission connection between the components is designed to be compact and efficient, so that the land occupation of the cabinet body is significantly reduced while maintaining the effective operation of the operating mechanism, which makes it more suitable for application in narrow space and effectively improves the space utilization. Even in the case of adopting the "triangle" layout with irregularity, the compact design of the cabinet body can still be realized.

[0017] 2. The operating mechanism adopts the design that the interlocking plate, the transmission connecting rod, the tripping indication assembly and the interlocking hook assembly are sequentially connected, which not only ensures the smoothness and accuracy of the operation process, but also greatly improves the reliability and stability of the operating mechanism. The close cooperation and effective linkage between the components can quickly and accurately cut off the circuit, thereby effectively avoiding the risk of equipment damage and personnel injury. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0019] Figure 1 is a partial structure side view of the load switch fuse combination cabinet provided by the utility model;

[0020] Figure 2 is a partial structure front view of the load switch fuse combination cabinet provided by the utility model;

[0021] The fuse sleeve cover 120; The interlocking plate 210; The transmission connecting rod 220; The tripping indication assembly 230; The interlocking hook assembly 240; The first interlocking hook 241; The second interlocking hook 242; The handle baffle 250; The fixed plate 260. DETAILED DESCRIPTION

[0022] The embodiments described in the utility model are for more clearly illustrating the technical scheme of the utility model, and do not constitute the limitation to the technical scheme provided by the utility model, and the person skilled in the art can know that with the evolution of technology and the appearance of new application scenarios, the technical scheme provided by the utility model is also applicable to similar technical problems.

[0023] In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0024] In the description of the utility model, it should be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the direction or position relationship based on the position or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0025] These terms are mainly for better describing the embodiments of the disclosure and the embodiments thereof, and are not used to limit the indicated device, element or component to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to represent the orientation or position relationship, the above-mentioned part of the terms can also be used to represent other meanings, for example, the term "upper" can also be used to represent a certain dependent relationship or connection relationship in some cases.

[0026] For the person skilled in the art, the specific meanings of these terms in the embodiments of the disclosure can be understood according to the specific circumstances.

[0027] For the person skilled in the art, the specific meanings of the above-mentioned terms in the embodiments of the disclosure can be understood according to the specific circumstances.

[0028] The term "plurality" means two or more, unless otherwise specified.

[0029] In the embodiments of the present disclosure, the term "and / or" is a description of an association relationship between objects, which means that there can be three relationships. For example, A and / or B means that there are three relationships of A or B, or A and B.

[0030] It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0031] In the power system, the load switch fuse combination cabinet as a key power distribution equipment, undertakes the important task of circuit protection, distribution and control. The traditional load switch fuse combination cabinet has some limitations in design, especially in the cabinet width and the configuration of the operating mechanism. For the load switch fuse combination cabinet with a cabinet width of 375mm, how to reasonably layout each component in the limited space and ensure the safety and stability of the operating mechanism when using the Ouma type mechanism (usually refers to the design matched with the standard of ABB company) has been a challenge faced by the industry. In the early design, the layout of the fuse sleeve bucket often adopts a relatively loose way, such as linear arrangement or relatively dispersed arrangement, which not only increases the land occupation of the cabinet, but also limits the application of the combination cabinet in narrow space. Especially when the fuse sleeve bucket layout is "triangle", due to the irregularity of the shape, it is more difficult to ensure the effective operation of the operating mechanism while realizing the compact design of the cabinet. In addition, the traditional operating mechanism may have problems in design, such as unsmooth linkage, inaccurate indication or unreliable interlocking, which may affect the safety and stability of the load switch fuse combination cabinet. In an emergency, if the operating mechanism cannot quickly and accurately cut off the circuit, it may cause equipment damage and even personnel injury. Therefore, there is an urgent need for a load switch fuse combination cabinet which can overcome the above defects.

[0032] In view of the above problems, the utility model provides a load switch fuse combination cabinet, including the cabinet body and load switch, fuse and operating mechanism being installed in the cabinet body inside. Specifically, the fuse is composed of the fuse sleeve bucket of built-in fuse and the fuse sleeve cover covering one side of the fuse sleeve bucket, and the operating mechanism is arranged on the fuse sleeve cover. The operating mechanism includes interlocking plate, transmission connecting rod, tripping indication assembly and interlocking hook assembly, and these assemblies are connected through transmission in sequence. Among them, the interlocking hook assembly is closely connected with the load switch. Once the operating mechanism is triggered, the interlocking plate will quickly push the transmission connecting rod, and then drive the tripping indication assembly to move. This series of actions will eventually drive the interlocking hook assembly, so that the load switch can cut off the circuit. The close cooperation and efficient linkage between the components in the operating mechanism of the utility model can quickly and accurately cut off the circuit, thereby effectively avoiding the risk of equipment damage and personnel injury. At the same time, the transmission connection between the components is compact and efficient, which significantly reduces the floor area of the cabinet body and greatly improves the space utilization. It is worth noting that even if the fuse sleeve bucket is arranged in a "triangle", the combination cabinet can still show the advantages of its compact design.

[0033] The utility model is described in detail through the following embodiments.

[0034] The load switch fuse combination cabinet provided by the utility model integrates the cabinet body, load switch, fuse and operating mechanism and other key components, which jointly ensure the safe and stable operation of the power system. The cabinet body serves as the overall framework, providing firm support and protection for the internal components. The load switch and the fuse are installed inside the cabinet body, jointly undertaking the tasks of circuit on-off and protection.

[0035] Referring to Figure 1 , Figure 1 is the partial structure side view of the load switch fuse combination cabinet provided by the utility model. The fuse includes the fuse sleeve bucket 110 with the fuse inside, which can be used to cut off the circuit when the current is overloaded. The fuse sleeve cover 120 is arranged on one side of the fuse sleeve bucket 110, which not only protects the fuse, but also provides convenience for the installation of the operating mechanism. As the core component of the entire combination cabinet, the operating mechanism realizes accurate control of the load switch through a series of precise transmission assemblies. Figure 2As shown, these components include interlock plate 210, transmission link 220, trip indication assembly 230, and interlock hook assembly 240. Once the operating mechanism is triggered, interlock plate 210 can quickly push transmission link 220, which in turn drives trip indication assembly 230 to move. This series of actions eventually drives interlock hook assembly 240, causing the movable contact and the static contact of the load switch to quickly separate, thereby cutting off the circuit. It is worth noting that the melting process of the fuse is closely related to the triggering of the operating mechanism. When the current in the internal circuit of the combined cabinet exceeds the rated value of the fuse, the fuse will heat up and gradually melt. During this process, the metal wire inside the fuse will soften and eventually break due to overheating. At the same time, the fuse tube striker closely connected to the fuse will lose support, thereby triggering the operating mechanism. This design ensures that the circuit can be quickly cut off when overloaded. In addition, trip indication assembly 230 can provide an intuitive fault indication for the operator. When a circuit failure occurs, the operating mechanism can quickly respond and achieve immediate circuit shutdown through a precise transmission system. This design not only improves the flexibility and reliability of the combined cabinet, but also enables it to be efficiently applied in a small space, such as a space with a cabinet width of 375 mm, greatly improving space utilization.

[0036] Further, interlock hook assembly 240 is composed of first interlock hook 241 and second interlock hook 242, wherein first interlock hook 241 is closely connected to the load switch, and second interlock hook 242 is connected to trip indication assembly 230. Once the operating mechanism is triggered, trip indication assembly 230 can drive second interlock hook 242, which in turn drives first interlock hook 241 to control the load switch, achieving rapid circuit shutdown.

[0037] Further, interlock plate 210 is provided with an interlock pin hole, so that transmission link 220 can accurately pass through it. At the same time, trip indication assembly 230 is also equipped with a first pin hole and a second pin hole. Transmission link 220 passes through the first pin hole to link with trip indication assembly 230, and second interlock hook 242 stably passes through the second pin hole to ensure close connection with trip indication assembly 230.

[0038] Further, handle baffle 250 is provided on fuse sleeve cover 120, which can be used to trigger interlock plate 210 to move, so that interlock plate 210 triggers a series of transmissions to cut off the circuit. Specifically, when the current in the circuit exceeds the rated value of the fuse, the fuse will melt. After the fuse melts, the fuse tube striker connected to it can touch or push handle baffle 250 on the fuse sleeve cover 120. After handle baffle 250 is touched, it will push interlock plate 210, so that interlock plate 210 can push transmission link 220, drive trip indication assembly 230 to move, and in turn drive interlock hook assembly 240 to quickly cut off the circuit of the load switch.

[0039] Further, the combination cabinet is also provided with a fixing plate 260, through which the fuse bucket 110 can be firmly installed at the desired position, preventing it from shaking or shifting during operation, thereby ensuring the stability and safety of the fuse bucket 110 and the fuses inside it. In addition, the fixing plate 260 can also play a certain protective role for the fuse bucket 110. It can prevent the fuse bucket from being directly impacted or squeezed by external objects, reducing the risk of damage to the fuse bucket. At the same time, the fixing plate 260 can also prevent the fuse bucket from being worn due to vibration or friction during long-term use, prolonging its service life. By reasonably designing the size and shape of the fixing plate 260, space resources can be fully utilized, and equipment layout can be optimized.

[0040] In a feasible embodiment, a tensioning element can be added between the first interlocking hook 241 and the second interlocking hook 242. This design aims to ensure that the interlocking hook can stably maintain the locked state without external intervention. When the interlocking hook assembly 240 is driven, the elastic force of the tensioning element will act as a boost to push the first interlocking hook 241 to trigger the load switch more quickly, so as to achieve instant cut-off of the circuit. In addition, when the interlocking hook assembly 240 encounters impact or vibration, the tensioning element can also effectively absorb part of the energy, providing additional protection for the assembly and preventing it from being damaged.

[0041] In a feasible embodiment, the load switch and fuse combination cabinet is provided with a detection assembly, including but not limited to a current transformer and a voltage transformer, which together complete real-time monitoring of the circuit state. When the current or voltage in the circuit changes, the current transformer and voltage transformer will capture these changes and convert them into current signals or voltage signals, which can be received and processed by subsequent protection devices, thereby achieving the protection and monitoring functions of the circuit. For example, when the current in the circuit exceeds the rated value, the current transformer will capture this change and transmit the signal to the protection device. After receiving the signal, the protection device will quickly determine whether the circuit needs to be cut off. Similarly, when the voltage in the circuit is abnormal, the voltage transformer will also capture this change and achieve protection and monitoring of the circuit through corresponding signal transmission and processing mechanisms.

[0042] The above is a specific description of the preferred embodiment of the present application, but the present application is not limited to the above-mentioned embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A combination load switch and fuse unit cabinet characterized by, The combination cabinet comprises a cabinet body, a load switch, a fuse and an operating mechanism installed in the cabinet body; the fuse comprises a fuse cartridge with a fuse inside and a fuse sleeve cover arranged on one side of the fuse cartridge; the operating mechanism is arranged on the fuse sleeve cover and comprises an interlock plate, a transmission connecting rod, a tripping indication assembly and an interlock hook assembly connected in sequence; the interlock hook assembly is connected with the load switch; when the operating mechanism is triggered, the interlock plate pushes the transmission connecting rod to drive the tripping indication assembly to move, so that the tripping indication assembly drives the interlock hook assembly to drive the load switch to cut off the circuit.

2. A combination load switch and fuse holder cabinet according to claim 1, wherein, The fuse comprises a fuse tube striker connected with the fuse; when the fuse is fused, the fuse tube striker triggers the operating mechanism.

3. A combination load switch and fuse holder cabinet according to claim 1, wherein, The interlock hook assembly comprises a first interlock hook and a second interlock hook; the first interlock hook is connected with the load switch; the second interlock hook is connected with the tripping indication assembly.

4. A combination load switch and fuse holder cabinet according to claim 1, wherein, The combination cabinet is provided with a fixing plate, and the fuse cartridge is fixed on the fixing plate.

5. A combination load switch and fuse holder cabinet according to claim 1, wherein, The interlock plate is provided with an interlock pin hole, and the transmission connecting rod is arranged in the interlock pin hole.

6. A combination load switch and fuse holder cabinet according to claim 3, wherein, The tripping indication assembly is provided with a first pin hole and a second pin hole; the transmission connecting rod is arranged in the first pin hole, and the second interlock hook is arranged in the second pin hole.

7. A combination load switch and fuse holder cabinet according to claim 1 wherein, The load switch comprises a moving contact and a static contact; when the moving contact and the static contact are separated, the circuit is disconnected.

8. A combination load switch and fuse holder cabinet according to claim 2, wherein, The fuse sleeve cover is provided with a handle baffle for triggering the interlock plate to move.

9. A combination load switch and fuse holder cabinet according to claim 1 wherein, The combination cabinet is provided with a detection assembly for detecting the state of the circuit.

10. A combination load switch and fuse holder cabinet according to claim 9, wherein, The detection assembly comprises a current transformer and a voltage transformer; the current transformer is used for monitoring the current of the circuit; and the voltage transformer is used for monitoring the voltage of the circuit.

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