A high-low voltage switch cabinet with simple structure

Abstract

The application relates to the technical field of high-low voltage switch cabinets, and discloses a simple-structure high-low voltage switch cabinet, which comprises a cabinet body, a mounting frame is fixedly connected to the inside of the cabinet body, a circuit breaker is arranged on the front face of the mounting frame, and a busbar row is arranged on the inner top wall of the cabinet body. The simple-structure high-low voltage switch cabinet is integrally formed by the cabinet body, a ventilation opening, a heat dissipation groove and a first heat dissipation opening, so that the structure of the high-low voltage switch cabinet is simplified, the manufacturing cost is reduced, and the maintenance convenience is improved. The current transformer, the voltage transformer and the air cylinder which are electrically connected with the control module are arranged, so that the connecting rod structure of the disconnecting switch can be automatically driven by the air cylinder when the current is abnormal, the power supply can be rapidly cut off, the reliability and safety of power utilization are ensured, and the problems that the existing high-low voltage switch cabinet usually adopts a complex mechanical structure to realize the operation and protection functions of the circuit breaker, resulting in the problems of bulky structure, inconvenient maintenance, high manufacturing cost and the like are solved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of high-low voltage switch cabinets, in particular to a high-low voltage switch cabinet with simple structure. BACKGROUND

[0002] The high-low voltage switch cabinet is an electrical equipment for connecting high-voltage or low-voltage cables, which is generally used in power supply stations, transformer substations and the like, receives high-voltage cables through a high-voltage cabinet, enters a low-voltage cabinet after voltage reduction by a transformer, and is then distributed to various power distribution boxes.

[0003] The existing high-low voltage switch cabinet usually adopts a complex mechanical structure to realize the operation and protection function of a circuit breaker, which results in the problems of bulky structure, inconvenient maintenance, high manufacturing cost and the like. CONTENT OF THE UTILITY MODEL

[0004] In view of the defects of the prior art, the application provides a high-low voltage switch cabinet with simple structure, which has the advantages of simplified structure of the high-low voltage switch cabinet, reduced manufacturing cost, improved maintenance convenience and enhanced reliability, and solves the problems of the existing high-low voltage switch cabinet, that is, the high-low voltage switch cabinet usually adopts a complex mechanical structure to realize the operation and protection function of a circuit breaker, which results in the problems of bulky structure, inconvenient maintenance, high manufacturing cost and the like.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: a high-low voltage switch cabinet with simple structure, comprising a cabinet body, a mounting frame fixedly connected to the inside of the cabinet body, a circuit breaker arranged on the front surface of the mounting frame, a busbar arranged on the inner top wall of the cabinet body, a current transformer arranged on the front surface of the mounting frame, a voltage transformer arranged on the front surface of the mounting frame, a disconnecting switch arranged on the inner side wall of the cabinet body, a connecting rod structure arranged in the disconnecting switch, a pneumatic cylinder fixedly connected to the inner side wall of the cabinet body, the output end of the pneumatic cylinder being movably connected to one end of the connecting rod structure, a control module arranged on the inner bottom wall of the cabinet body, ventilation openings arranged at equal intervals on the two sides of the cabinet body, a heat dissipation groove arranged in the cabinet body, and first heat dissipation openings arranged at equal intervals on the side wall of the heat dissipation groove, the cabinet body, the ventilation openings, the heat dissipation groove and the first heat dissipation openings being integrally formed.

[0006] Through the above-mentioned scheme, the existing high-low voltage switch cabinet usually adopts a complex mechanical structure to realize the operation and protection function of a circuit breaker, which results in the problems of bulky structure, inconvenient maintenance, high manufacturing cost and the like, the cabinet body, the ventilation openings, the heat dissipation groove and the first heat dissipation openings are integrally formed, the structure of the high-low voltage switch cabinet is simplified, the manufacturing cost is reduced, and the maintenance convenience is improved, the current transformer, the voltage transformer and the pneumatic cylinder electrically connected to the control module are arranged, the connecting rod structure of the disconnecting switch can be automatically driven by the pneumatic cylinder when the current is abnormal, the power supply is rapidly cut off, and the reliability and safety of power utilization are ensured.

[0007] Further, the current transformer is electrically connected with the control module, the voltage transformer is electrically connected with the control module, and the cylinder is electrically connected with the control module.

[0008] Through the above scheme, the current transformer and the voltage transformer can monitor the changes of current and voltage in real time, and transmit data to the control module. Once an abnormal situation is detected, the control module immediately issues an instruction to start the cylinder, which pushes the connecting rod structure to make the disconnecting switch open, thereby quickly cutting off the power supply and ensuring the safety of power use.

[0009] Further, the front of the cabinet is hinged with a cabinet door, and the inside of the cabinet door is provided with an observation window.

[0010] Through the above scheme, the design of the cabinet door allows the operator to conveniently open or close the cabinet, and the observation window allows the operator to observe the working state of the inside of the cabinet, such as the on-off state of the circuit breaker and the flickering of the indicator light, without opening the cabinet door.

[0011] Further, one end of the cabinet door is provided with a lock, and the front of the cabinet door is provided with a handle.

[0012] Through the above scheme, the lock ensures that the cabinet cannot be opened without authorization, improving safety, and the handle provides convenience for opening and closing the cabinet door, allowing the operator to easily open the cabinet door.

[0013] Further, the inside of the heat dissipation groove is provided with a heat dissipation device, the back of the cabinet is fixedly connected with a heat dissipation plate, and the inside of the heat dissipation plate is provided with second heat dissipation openings arranged at equal intervals.

[0014] Through the above scheme, the first heat dissipation opening, the heat dissipation groove and the second heat dissipation opening together form a heat dissipation channel, and when the heat dissipation device is started, the heat inside the cabinet can be effectively dissipated, ensuring stable operation of the high-low voltage switch cabinet.

[0015] Further, the bottom surface of the cabinet is fixedly connected with two support plates, and the bottom of each support plate is fixedly connected with a rubber pad.

[0016] Through the above scheme, the design of the support plate and the rubber pad not only provides stable support, but also reduces friction and vibration between the cabinet and the ground, and the rubber pad also has certain anti-skid and shock-absorbing effects.

[0017] Further, the inner wall of the heat dissipation groove is coated with an anti-static coating.

[0018] Through the above scheme, the anti-static coating can effectively inhibit the adhesion of dust, keep the inside of the heat dissipation groove and the heat dissipation device clean, and avoid affecting the heat dissipation effect of the high-low voltage switch cabinet.

[0019] Further, the inner wall and the outer wall of the cabinet body are coated with insulating paint.

[0020] Through the above scheme, the coating of the insulating paint not only improves the insulation performance of the cabinet body, but also protects the cabinet body from the influence of moisture, corrosion and other adverse factors, thereby prolonging the service life of the high-low voltage switch cabinet.

[0021] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0022] The simple structure of the high-low voltage switch cabinet is integrally formed by the cabinet body, the ventilation opening, the heat dissipation groove, and the first heat dissipation opening, which simplifies the structure of the high-low voltage switch cabinet, reduces the manufacturing cost, and improves the maintenance convenience. The current transformer, the voltage transformer, and the air cylinder electrically connected to the control module are provided, so that the connecting rod structure of the disconnecting switch can be automatically driven by the air cylinder when the current is abnormal, and the power supply can be quickly cut off, thereby ensuring the reliability and safety of power use. The existing high-low voltage switch cabinet usually adopts a complex mechanical structure to realize the operation and protection function of the circuit breaker, which leads to the problems of bulky structure, inconvenient maintenance, high manufacturing cost, etc. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a three-dimensional structure diagram of the present application as a whole;

[0024] Figure 2 is a heat dissipation plate structure diagram of the present application;

[0025] Figure 3 is a cabinet body structure diagram of the present application;

[0026] Figure 4 is a heat dissipation groove structure diagram of the present application;

[0027] Figure 5 is a disconnecting switch structure diagram of the present application.

[0028] In the drawings:

[0029] 1, cabinet body; 2, mounting frame; 3, circuit breaker; 4, busbar; 5, current transformer; 6, voltage transformer; 7, disconnecting switch; 8, control module; 9, connecting rod structure; 10, air cylinder; 11, cabinet door; 12, observation window; 13, lock; 14, ventilation opening; 15, heat dissipation groove; 16, heat dissipation device; 17, first heat dissipation opening; 18, heat dissipation plate; 19, second heat dissipation opening; 20, support plate; 21, rubber pad. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0031] Please refer to Figure 3 , Figure 4 and Figure 5 , the simple structure high-low voltage switch cabinet in the embodiment includes a cabinet body 1, the inside of the cabinet body 1 is fixedly connected with a mounting frame 2, the front of the mounting frame 2 is provided with a circuit breaker 3, the inner top wall of the cabinet body 1 is provided with a busbar 4, the front of the mounting frame 2 is provided with a current transformer 5, the front of the mounting frame 2 is provided with a voltage transformer 6, the inner side wall of the cabinet body 1 is provided with a disconnecting switch 7, the inside of the disconnecting switch 7 is provided with a connecting rod structure 9, the inner side wall of the cabinet body 1 is fixedly connected with an air cylinder 10, the output end of the air cylinder 10 is movably connected with one end of the connecting rod structure 9, the inner bottom wall of the cabinet body 1 is provided with a control module 8, both sides of the cabinet body 1 are both provided with equidistantly arranged ventilation openings 14, the inside of the cabinet body 1 is provided with a heat dissipation groove 15, the side wall of the heat dissipation groove 15 is provided with equidistantly arranged first heat dissipation openings 17, the cabinet body 1, the ventilation openings 14, the heat dissipation groove 15 and the first heat dissipation openings 17 are integrally formed.

[0032] Please refer to Figure 3 , the current transformer 5 and the control module 8 are electrically connected, the voltage transformer 6 and the control module 8 are electrically connected, the air cylinder 10 and the control module 8 are electrically connected, the current transformer 5 and the voltage transformer 6 can monitor the changes of current and voltage in real time, and transmit data to the control module 8, once an abnormal condition is detected, the control module 8 immediately issues an instruction to start the air cylinder 10, the air cylinder 10 then pushes the connecting rod structure 9, promotes the disconnecting switch 7 to open, and quickly cuts off the power supply, thereby ensuring the safety of power use.

[0033] Please refer to Figure 1 and Figure 2 , the front of the cabinet body 1 is hingedly connected with a cabinet door 11, the inside of the cabinet door 11 is provided with an observation window 12, the design of the cabinet door 11 allows an operator to conveniently open or close the cabinet body 1, and the observation window 12 allows the working state inside the cabinet body 1, such as the on-off state of the circuit breaker 3 and the flickering of an indicator light, to be observed without opening the cabinet door 11.

[0034] Please refer to Figure 1 and Figure 2 , one end of the cabinet door 11 is provided with a lock 13, the front of the cabinet door 11 is provided with a handle, the lock 13 ensures that the cabinet body 1 cannot be opened without authorization, thereby improving safety, and the handle provides convenience for the opening and closing of the cabinet door 11, so that an operator can easily open the cabinet door 11.

[0035] Please refer to Figure 3 and Figure 4 , the inside of the heat dissipation groove 15 is provided with a heat dissipation device 16, the back of the cabinet body 1 is fixedly connected with a heat dissipation plate 18, the inside of the heat dissipation plate 18 is provided with second heat dissipation openings 19 arranged at equal intervals, and the first heat dissipation openings 17, the heat dissipation groove 15 and the second heat dissipation openings 19 jointly constitute a heat dissipation channel. When the heat dissipation device 16 is started, the heat inside the cabinet body 1 can be effectively dissipated, thereby ensuring the stable operation of the high-low voltage switch cabinet.

[0036] Please refer to Figure 1 , Figure 2 and Figure 3 , the bottom surface of the cabinet body 1 is fixedly connected with two support plates 20, and the bottom of each support plate 20 is fixedly connected with a rubber pad 21. The design of the support plate 20 and the rubber pad 21 not only provides stable support, but also reduces the friction and vibration between the cabinet body 1 and the ground. Meanwhile, the rubber pad 21 also has certain anti-skid and shock-absorbing effects.

[0037] Please refer to Figure 4 , the inner wall of the heat dissipation groove 15 is coated with an anti-static coating. The anti-static coating can effectively inhibit the adhesion of dust, keep the inside of the heat dissipation groove 15 and the heat dissipation device 16 clean, and avoid affecting the heat dissipation effect of the high-low voltage switch cabinet.

[0038] Please refer to Figure 1 , Figure 2 and Figure 3 , the inner wall and the outer wall of the cabinet body 1 are coated with insulating paint. The coating of the insulating paint not only improves the insulation performance of the cabinet body 1, but also protects the cabinet body 1 from the influence of adverse factors such as moisture and corrosion, thereby prolonging the service life of the high-low voltage switch cabinet.

[0039] The high-low voltage switch cabinet with simple structure in the embodiment is integrally formed by the cabinet body 1, the ventilation opening 14, the heat dissipation groove 15 and the first heat dissipation opening 17, which simplifies the structure of the high-low voltage switch cabinet, reduces the manufacturing cost, and improves the maintenance convenience. By arranging the current transformer 5, the voltage transformer 6 and the air cylinder 10 electrically connected with the control module 8, the connecting rod structure 9 of the disconnecting switch 7 can be automatically driven by the air cylinder 10 when the current is abnormal, so as to quickly cut off the power supply, thereby ensuring the reliability and safety of power utilization. The existing high-low voltage switch cabinet usually adopts a complex mechanical structure to realize the operation and protection function of the circuit breaker, which leads to the problems of bulky structure, inconvenient maintenance and high manufacturing cost.

[0040] It should be noted that the heat dissipation plate 18 is fixedly connected with the cabinet body 1 by bolts, which facilitates the installation and removal of the heat dissipation plate 18, and further facilitates the maintenance of the heat dissipation device 16. The disconnecting switch 7 is of a rotary structure, and the connecting rod structure 9 can control the opening and closing of the disconnecting switch 7.

[0041] The working principle of the above embodiment is as follows:

[0042] When the power grid is in normal operation, the current is transmitted to the circuit breaker 3 through the busbar 4, and then distributed to each load by the circuit breaker 3. The current transformer 5 and the voltage transformer 6 can monitor the changes of the current and the voltage in real time, and transmit the data to the control module 8. Once an abnormal condition is detected, the control module 8 immediately issues an instruction to start the air cylinder 10, which pushes the connecting rod structure 9 to make the disconnecting switch 7 trip, thereby cutting off the power supply quickly and ensuring the safety of power use. The integrally formed cabinet 1, the ventilation opening 14, the heat dissipation groove 15 and the first heat dissipation opening 17 simplify the structure of the high-low voltage switch cabinet, reduce the manufacturing cost and improve the maintenance convenience. The ventilation opening 14 can ensure the ventilation and heat dissipation of the cabinet 1. The first heat dissipation opening 17, the heat dissipation groove 15 and the second heat dissipation opening 19 jointly constitute a heat dissipation channel. When the heat dissipation device 16 is started, the heat inside the cabinet 1 can be effectively dissipated, thereby ensuring the stable operation of the high-low voltage switch cabinet.

[0043] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, no element discussed in the above description is required or essential unless explicitly stated as such.

[0044] Although the embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-low voltage switchgear of simple structure comprising a cabinet (1), characterized in that: The inside of the cabinet body (1) is fixedly connected with a mounting rack (2), the front of the mounting rack (2) is provided with a circuit breaker (3), the inner top wall of the cabinet body (1) is provided with a busbar (4), the front of the mounting rack (2) is provided with a current transformer (5), the front of the mounting rack (2) is provided with a voltage transformer (6), the inner side wall of the cabinet body (1) is provided with a disconnecting switch (7), the inside of the disconnecting switch (7) is provided with a connecting rod structure (9), the inner side wall of the cabinet body (1) is fixedly connected with an air cylinder (10), the output end of the air cylinder (10) is movably connected with one end of the connecting rod structure (9), the inner bottom wall of the cabinet body (1) is provided with a control module (8), both sides of the cabinet body (1) are provided with equidistantly arranged ventilation openings (14), the inside of the cabinet body (1) is provided with a heat dissipation groove (15), the side wall of the heat dissipation groove (15) is provided with equidistantly arranged first heat dissipation openings (17), the cabinet body (1), the ventilation opening (14), the heat dissipation groove (15) and the first heat dissipation opening (17) are integrally formed.

2. A simple structure high-low voltage switchgear according to claim 1, characterized in that: The current transformer (5) and the control module (8) are electrically connected, the voltage transformer (6) and the control module (8) are electrically connected, and the air cylinder (10) and the control module (8) are electrically connected.

3. A simple construction high-low voltage switchgear according to claim 1, characterized in that: The front of the cabinet body (1) is hingedly connected with a cabinet door (11), and the inside of the cabinet door (11) is provided with an observation window (12).

4. A simple construction high-low voltage switchgear according to claim 3, characterized in that: One end of the cabinet door (11) is provided with a lock (13), and the front of the cabinet door (11) is provided with a handle.

5. A simple construction high-low voltage switchgear according to claim 1, characterized in that: The inside of the heat dissipation groove (15) is provided with a heat dissipation device (16), the back of the cabinet body (1) is fixedly connected with a heat dissipation plate (18), and the inside of the heat dissipation plate (18) is provided with equidistantly arranged second heat dissipation openings (19).

6. A simple construction high-low voltage switchgear according to claim 1, characterized in that: The bottom surface of the cabinet body (1) is fixedly connected with two supporting plates (20), and the bottom of each supporting plate (20) is fixedly connected with a rubber pad (21).

7. A simple construction high-low voltage switchgear according to claim 1, characterized in that: The inner wall of the heat dissipation groove (15) is coated with an anti-static coating.

8. A simple construction high-low voltage switchgear according to claim 1, characterized in that: The inner wall and the outer wall of the cabinet body (1) are coated with insulating paint.

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