Salt-fog corrosion resistant high voltage switch cabinet

Abstract

The utility model discloses a kind of high-voltage switchgear of salt mist corrosion prevention, it relates to high-voltage switchgear technical field, including cabinet and air intake component;Cabinet: inside is equipped with PLC controller and salt mist sensor, the upper side of the cabinet is equipped with air outlet component, inside installation is equipped with one-way exhaust component in the air outlet component;Air intake component: including air inlet pipe, connecting frame, filter screen and zeolite molecular sieve, air inlet, which is arranged in the left lower end of the cabinet, is fixed with air inlet pipe inside, the middle part of the air inlet pipe is provided with opening, connecting frame is fixed inside the opening, two corresponding air vents are provided in the left and right sides of the connecting frame, filter screen is fixed inside the air vent, zeolite molecular sieve is filled in the connecting frame, wherein: the input end of the PLC controller is electrically connected to the output end of external power supply, can effectively avoid that salt mist enters the inside of cabinet and corrodes the electrical components inside it.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage switchgear technology, specifically a high-voltage switchgear resistant to salt spray corrosion. Background Technology

[0002] High-voltage switchgear, as a key piece of equipment in power systems, plays a vital role in switching, control, and protection during power generation, transmission, distribution, and energy conversion. This equipment features various electrical interfaces, including overhead incoming and outgoing lines, cable connections, and busbar connections, and is widely used in power plants, substations, industrial plants, mines, and commercial buildings. However, when high-voltage switchgear is used in special environments such as marine environments, its operational reliability faces severe challenges: the high concentration of salt spray in marine environments accelerates the corrosion of the switchgear and internal components, significantly shortening the equipment's lifespan. Specifically, salt spray deposition leads to decreased insulation performance, corrosion of metal components, and poor electrical contact, seriously affecting the safe and stable operation of the equipment. Therefore, we propose a high-voltage switchgear resistant to salt spray corrosion. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a high-voltage switchgear that is resistant to salt spray corrosion. This effectively prevents salt spray from entering the cabinet and corroding the electrical components inside, thus effectively solving the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a high-voltage switchgear resistant to salt spray corrosion, comprising a cabinet and an air intake assembly;

[0005] Cabinet: The cabinet is equipped with a PLC controller and a salt spray sensor. An exhaust assembly is installed on the upper side of the cabinet, and a one-way exhaust assembly is installed inside the exhaust assembly.

[0006] Air intake assembly: includes an air intake pipe, a connecting frame, a filter screen, and a zeolite molecular sieve. The air intake pipe is fixed inside the air intake port located at the lower left side of the cabinet. An opening is opened in the middle of the air intake pipe. A connecting frame is fixed inside the opening. Two corresponding vents are opened on the left and right sides of the connecting frame. A filter screen is fixed inside the vents. The connecting frame is filled with a zeolite molecular sieve. The zeolite molecular sieve is used to adsorb salts in the gas entering the cabinet.

[0007] Wherein: the input terminal of the PLC controller is electrically connected to the output terminal of the external power supply, and the PLC controller is bidirectionally electrically connected to the salt spray sensor.

[0008] Furthermore, the air intake assembly also includes an L-shaped sealing cap and a magnet. An L-shaped opening is provided on the front side of the connecting frame, and an L-shaped sealing cap is snapped into the inside of the L-shaped opening. Mounting holes are provided on the upper and front sides of the L-shaped sealing cap, and magnets are fixed inside the mounting holes. Both magnets are attracted to the side of the connecting frame. The L-shaped sealing cap and magnet facilitate the replacement of the zeolite molecular sieve.

[0009] Furthermore, the air outlet assembly includes a fixing ring, an exhaust fan, an exhaust pipe, and an L-shaped connecting pipe. An exhaust pipe is fixed inside the exhaust port on the upper side of the cabinet. An L-shaped connecting pipe is fixed at the upper end inside the exhaust pipe. A fixing ring is fixed on the upper side inside the cabinet. An exhaust fan is installed inside the fixing ring. The exhaust fan and the exhaust pipe correspond to each other. The input end of the exhaust fan is electrically connected to the output end of the PLC controller. Air is exhausted by setting up the air outlet assembly.

[0010] Furthermore, the one-way exhaust assembly includes an air guide pipe, a slip ring, a sealing cap, and a spring. A mounting ring is fixed to the lower end of the exhaust pipe, and the air guide pipe is fixed inside the mounting ring. A slip ring is fitted onto the circumferential surface of the air guide pipe, and evenly distributed exhaust ports are formed on the circumferential surface of the slip ring. A sealing cap is fixed to the upper end of the slip ring, and a spring is fitted onto the circumferential surface of the slip ring. The lower end of the spring is fixed to the upper end of the mounting ring, and the upper end of the spring is fixed to the lower end of the sealing cap. By setting up the one-way exhaust assembly, external gas is prevented from entering the interior of the cabinet through the exhaust pipe.

[0011] Furthermore, a sealing rubber frame is fixed to the front side inside the cabinet, and a baffle is hinged inside the opening on the front side of the cabinet. The rear side of the baffle fits against the front side of the sealing rubber frame, thereby sealing the cabinet by setting the sealing rubber frame and the baffle.

[0012] Furthermore, an observation port is provided on the front side of the baffle, and a transparent plate is fixed inside the observation port. A lock is installed on the right end of the front side of the baffle, and the lock is connected to the cabinet body to fix the baffle.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This high-voltage switchgear resistant to salt spray corrosion has the following advantages:

[0014] 1. The filter screen of the air intake component and the zeolite molecular sieve form a composite filtration structure, which effectively intercepts and adsorbs salt spray particles; the active exhaust system of the air outlet component, together with the one-way exhaust component, creates a slightly positive pressure environment inside the cabinet, which significantly reduces the risk of salt spray penetration and extends the service life of electrical components.

[0015] 2. A closed-loop control system is constructed by a salt spray sensor and a PLC controller to monitor the environmental salt spray concentration in real time and automatically adjust the exhaust intensity to ensure rapid air purification inside the cabinet and achieve proactive response for corrosion protection.

[0016] 3. The combination design of magnetic L-shaped sealing cover and modular connection frame simplifies the zeolite molecular sieve replacement process, improves maintenance efficiency, and ensures the sealing reliability of the filter components.

[0017] 4. The multi-layer sealing structure of the sealed rubber frame and transparent plate, combined with the spring-pre-tightened one-way exhaust assembly, forms a three-dimensional protective barrier, effectively preventing the intrusion of external salt spray. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the front structure of this utility model;

[0019] Figure 2 This is a front sectional view of the present invention;

[0020] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This utility model Figure 2 Enlarged view at point B in the middle;

[0022] Figure 5 This is a sectional view of the left side of this utility model.

[0023] In the diagram: 1 Cabinet, 2 Salt spray sensor, 3 Air intake assembly, 31 Air intake pipe, 32 Connecting frame, 33 Filter screen, 34 Zeolite molecular sieve, 35 L-shaped sealing cover, 36 Magnet, 4 Air outlet assembly, 41 Fixing ring, 42 Exhaust fan, 43 Exhaust pipe, 44 L-shaped connecting pipe, 5 One-way exhaust assembly, 51 Air guide pipe, 52 Slip ring, 53 Sealing cover, 54 Spring, 6 Sealing rubber frame, 7 Baffle, 8 Transparent plate, 9 Lock head, 10 PLC controller. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 This embodiment provides a technical solution: a high-voltage switchgear resistant to salt spray corrosion, comprising a cabinet 1 and an air intake assembly 3;

[0026] Cabinet 1: Internally, a PLC controller 10 and a salt spray sensor 2 are installed. An exhaust assembly 4 is installed on the upper side of cabinet 1. Inside the exhaust assembly 4 is a one-way exhaust assembly 5. The exhaust assembly 4 includes a fixing ring 41, an exhaust fan 42, an exhaust pipe 43, and an L-shaped connecting pipe 44. An exhaust pipe 43 is fixed inside the exhaust port on the upper side of cabinet 1. An L-shaped connecting pipe 44 is fixed to the upper end of the exhaust pipe 43. A fixing ring 41 is fixed to the upper side inside cabinet 1. An exhaust fan 42 is installed inside the fixing ring 41. The exhaust fan 42 corresponds to the exhaust pipe 43. The input end of the exhaust fan 42 is electrically connected to the output end of the PLC controller 10, providing one-way exhaust. Component 5 includes an air guide pipe 51, a slip ring 52, a sealing cover 53, and a spring 54. The lower end of the exhaust pipe 43 is fixed with a mounting ring, and the air guide pipe 51 is fixed inside the mounting ring. A slip ring 52 is fitted on the circumferential surface of the air guide pipe 51. The circumferential surface of the slip ring 52 has evenly distributed exhaust ports. The upper end of the slip ring 52 is fixed with a sealing cover 53. A spring 54 is fitted on the circumferential surface of the slip ring 52. The lower end of the spring 54 is fixed to the upper end of the mounting ring, and the upper end of the spring 54 is fixed to the lower end of the sealing cover 53. By setting the one-way exhaust component 5, external gas is prevented from entering the interior of the cabinet 1 through the exhaust pipe 43. Exhaust is carried out by setting the exhaust component 4.

[0027] The air intake assembly 3 includes an air intake pipe 31, a connecting frame 32, a filter screen 33, and a zeolite molecular sieve 34. The air intake pipe 31 is fixed inside the air intake port located at the lower left side of the cabinet 1. An opening is opened in the middle of the air intake pipe 31, and the connecting frame 32 is fixed inside the opening. Two corresponding air vents are opened on the left and right sides of the connecting frame 32, and the filter screen 33 is fixed inside the air vents. The connecting frame 32 is filled with zeolite molecular sieve 34. The air intake assembly 3 also includes an L-shaped sealing cap 35 and a magnet 36. An L-shaped opening is opened on the front side of the connecting frame 32, and an L-shaped sealing cap 35 is snapped into the L-shaped opening. Mounting holes are opened on the upper and front sides of the L-shaped sealing cap 35, and magnets 36 are fixed inside the mounting holes. Both magnets 36 are attracted to the side of the connecting frame 32. The L-shaped sealing cap 35 and magnets 36 facilitate the replacement of the zeolite molecular sieve 34. The zeolite molecular sieve 34 is used to adsorb salt in the gas entering the cabinet 1.

[0028] Wherein: the input terminal of PLC controller 10 is electrically connected to the output terminal of external power supply, and PLC controller 10 is bidirectionally electrically connected to salt spray sensor 2.

[0029] Wherein: a sealing rubber frame 6 is fixed to the front side inside the cabinet 1, and a baffle 7 is hinged inside the opening on the front side of the cabinet 1. The rear side of the baffle 7 fits against the front side of the sealing rubber frame 6. The cabinet 1 is sealed by setting the sealing rubber frame 6 and the baffle 7.

[0030] Among them: an observation port is provided on the front side of the baffle 7, and a transparent plate 8 is fixed inside the observation port. A lock 9 is installed on the right end of the front side of the baffle 7. The lock 9 is connected to the cabinet 1 and the baffle 7 is fixed by setting the lock 9.

[0031] The working principle of the high-voltage switchgear resistant to salt spray corrosion provided by this utility model is as follows: The salt spray sensor 2 monitors the internal environment of the cabinet 1 in real time. When an abnormal salt spray concentration is detected, it immediately sends a signal to the PLC controller 10. The PLC controller 10 then activates the exhaust fan 42 in the air outlet assembly 4, driving the air inside the cabinet to be quickly discharged through the exhaust pipe 43. At the same time, external air enters the cabinet through the air inlet pipe 31 of the air inlet assembly 3. During this process, when the air flows through the connecting frame 32, the filters 33 on both sides preferentially intercept large particulate pollutants. Subsequently, the zeolite molecular sieve 34 deeply adsorbs the salt spray components, forming a purified airflow. Inside the cabinet, the sealing cover 53 of the one-way exhaust assembly 5 is kept closed by the pre-tightening of the spring 54. The slip ring 52 is opened only under the action of the air pressure difference generated by the operation of the exhaust fan 42, realizing one-way exhaust and effectively preventing the backflow of external salt-containing air. The sealing rubber frame 6 at the front end of the cabinet 1 is tightly pressed with the baffle 7, and with the embedded sealing structure of the transparent plate 8, multiple physical barriers are formed. When the zeolite molecular sieve 34 needs to be replaced, the magnetic L-shaped sealing cover 35 can be removed by hand, realizing convenient maintenance of the filter module. The whole system constructs a continuously stable anti-corrosion microenvironment inside the cabinet through the synergistic mechanism of environmental perception, active purification and dynamic sealing.

[0032] It is worth noting that the PLC controller 10 disclosed in the above embodiments is specifically a Siemens S7-200, while the exhaust fan 42 and smoke sensor 2 can be freely configured according to the actual application scenario. The PLC controller 10 controls the operation of the exhaust fan 42 using methods commonly used in the prior art.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A high-voltage switchgear resistant to salt spray corrosion, characterized in that: Includes cabinet (1) and air intake assembly (3); Cabinet (1): A PLC controller (10) and a salt spray sensor (2) are installed inside. An exhaust assembly (4) is installed on the upper side of the cabinet (1). A one-way exhaust assembly (5) is installed inside the exhaust assembly (4). Air intake assembly (3): includes air intake pipe (31), connecting frame (32), filter screen (33) and zeolite molecular sieve (34). The air intake port provided at the lower left side of the cabinet (1) is fixed with air intake pipe (31). An opening is provided in the middle of the air intake pipe (31). The opening is fixed with connecting frame (32). Two corresponding air vents are provided on the left and right sides of the connecting frame (32). The air vents are fixed with filter screen (33). The connecting frame (32) is filled with zeolite molecular sieve (34). Wherein: the input terminal of the PLC controller (10) is electrically connected to the output terminal of the external power supply, and the PLC controller (10) is bidirectionally electrically connected to the salt spray sensor (2).

2. The high-voltage switchgear resistant to salt spray corrosion according to claim 1, characterized in that: The air intake assembly (3) also includes an L-shaped sealing cap (35) and a magnet (36). The front side of the connecting frame (32) has an L-shaped opening, and the L-shaped sealing cap (35) is snapped into the inside of the L-shaped opening. The upper and front sides of the L-shaped sealing cap (35) have mounting holes, and the magnet (36) is fixed inside the mounting holes. Both magnets (36) are attracted to the side of the connecting frame (32).

3. A high-voltage switchgear resistant to salt spray corrosion according to claim 1, characterized in that: The exhaust assembly (4) includes a fixing ring (41), an exhaust fan (42), an exhaust pipe (43), and an L-shaped connecting pipe (44). The exhaust port on the upper side of the cabinet (1) is fixed with an exhaust pipe (43). The upper end of the exhaust pipe (43) is fixed with an L-shaped connecting pipe (44). The upper side of the cabinet (1) is fixed with a fixing ring (41). An exhaust fan (42) is installed inside the fixing ring (41). The exhaust fan (42) corresponds to the exhaust pipe (43). The input end of the exhaust fan (42) is electrically connected to the output end of the PLC controller (10).

4. A high-voltage switchgear resistant to salt spray corrosion according to claim 3, characterized in that: The one-way exhaust assembly (5) includes an air guide pipe (51), a slip ring (52), a sealing cap (53), and a spring (54). The lower end of the exhaust pipe (43) is fixed with an installation ring, and the air guide pipe (51) is fixed inside the installation ring. A slip ring (52) is fitted on the circumferential surface of the air guide pipe (51). The circumferential surface of the slip ring (52) has evenly distributed exhaust ports. The upper end of the slip ring (52) is fixed with a sealing cap (53). A spring (54) is fitted on the circumferential surface of the slip ring (52). The lower end of the spring (54) is fixed to the upper end of the installation ring, and the upper end of the spring (54) is fixed to the lower end of the sealing cap (53).

5. A high-voltage switchgear resistant to salt spray corrosion according to claim 1, characterized in that: A sealing rubber frame (6) is fixed to the front side inside the cabinet (1), and a baffle (7) is hinged inside the opening on the front side of the cabinet (1). The rear side of the baffle (7) is in contact with the front side of the sealing rubber frame (6).

6. A high-voltage switchgear resistant to salt spray corrosion according to claim 5, characterized in that: An observation port is provided on the front side of the baffle (7), and a transparent plate (8) is fixed inside the observation port. A lock (9) is installed on the right end of the front side of the baffle (7), and the lock (9) is connected to the cabinet (1).

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