Machine room mains supply phase sequence monitoring and protecting device

Abstract

The utility model belongs to the technical field of protection devices, and particularly relates to a machine room commercial power phase sequence monitoring protection device comprising a relay, the top surface of the relay is provided with three wiring holes, a dustproof limiting mechanism is arranged between the wiring holes and the relay, the top of the relay is provided with a dustproof shell, and the dustproof shell is provided with a power supply. An opening is formed in the front side wall of the dustproof shell, and an inspection cover is arranged in the opening. According to the machine room mains supply phase sequence monitoring and protecting device, the dustproof limiting mechanism is arranged, the wiring hole is wrapped in an all-around mode to achieve dust prevention, the limiting structure is arranged on the dustproof shell to clamp and fix the cable, and when the cable penetrates through the opening and enters the dustproof shell, the dustproof limiting mechanism is arranged on the dustproof shell. The two limiting plates can clamp and fix the exterior of the cable under the action of the spring, the cable is limited, the pulling resistance of the cable is enhanced, the opening and the inspection cover are arranged, the wiring position can be exposed for inspection only by turning over the inspection cover upwards, and operation is simple.

Description

Technical Field

[0001] The utility model belongs to the technical field of protection devices, and particularly relates to a monitoring and protection device for the phase sequence of commercial power in a computer room. Background Art

[0002] A phase sequence protector is a kind of power protection device used to monitor and protect the phase sequence in a power system. The phase sequence refers to the sequence of each phase current or voltage in a polyphase power system. The phase sequence protector determines whether the phase sequence is correct by detecting the phase sequence of each phase voltage or current in the power system.

[0003] The phase sequence protector is commonly used in scenarios such as computer rooms, elevators, central air conditioners, and overhead cranes. When the phase sequence protector is connected to a cable, the installation method is to directly install it in an installation box.

[0004] When the existing anti-interference phase sequence protector is in use, it does not have a structure for clamping the cable. The cable is easily separated from the relay under tension, and a lot of dust is likely to accumulate at the wiring point. This not only affects the normal operation of the protector but also makes it difficult for maintenance personnel to observe the wiring situation, thus making it inconvenient for maintenance. Therefore, a monitoring and protection device for the phase sequence of commercial power in a computer room is proposed to solve the above problems.

[0005] The information disclosed in this background art section is only intended to enhance the overall understanding of the utility model and should not be regarded as an admission or any form of implication that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a monitoring and protection device for the phase sequence of commercial power in a computer room, which has the advantages of being convenient for dust prevention at the wiring point and preventing the cable from being separated from the relay under tension, and solves the problems that dust easily accumulates at the wiring point of the protector, affecting maintenance, and the cable is easily loosened.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] A monitoring and protection device for the phase sequence of commercial power in a computer room, comprising:

[0009] A relay, on the top surface of which there are three wiring holes, and a dust-proof and limiting mechanism is arranged between the wiring holes and the relay;

[0010] A dust-proof cover is arranged on the top of the relay. An opening is provided on the front side wall of the dust-proof cover, and an inspection cover is arranged inside the opening. There are three wire passing holes on the top wall of the dust-proof cover, and three groups of installation grooves are arranged on the inner top wall of the dust-proof cover. A spring is installed inside the installation groove, one end of the spring is fixedly installed with a connecting rod, and a limiting plate is fixedly installed at the end of the connecting rod away from the spring.

[0011] Preferably, an arc-shaped card slot is formed in the limiting plate, and the wire passing opening is communicated with the opening.

[0012] Preferably, a plurality of connection holes are formed in the relay, and bolts are screwed in the connection holes.

[0013] Preferably, a phase sequence protection module is arranged in the relay, a conductive sheet is arranged near the bottom end in the wiring hole, and the phase sequence protection module is electrically connected with the conductive sheet.

[0014] Preferably, the position of the opening corresponds to the position of the wiring hole, and a connection mechanism is arranged between the inspection cover and the opening.

[0015] Preferably, connection grooves are formed on the left and right sides of the opening, and a rotating shaft is rotatably connected inside the connection grooves.

[0016] Preferably, one end of the rotating shaft close to the inspection cover is fixedly connected with the inspection cover, and the connecting rod is slidably connected with the installation groove.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] By arranging the dust-proof limiting mechanism, the dust-proof shell is arranged outside the wiring hole, which not only wraps the wiring hole in all directions to achieve dust-proof, but also sets a limiting structure on the dust-proof shell to clamp and fix the cable. When the cable passes through the opening and enters the inside of the dust-proof shell, the two limiting plates will clamp and fix the outside of the cable under the action of the spring to limit the cable and enhance its tensile strength. And by arranging the opening and the inspection cover, only need to turn the inspection cover upward to expose the wiring part for inspection, and the operation is simple. Description of the Drawings

[0019] Figure 1 is the first overall structural schematic diagram of the utility model;

[0020] Figure 2 is the second overall structural schematic diagram of the utility model;

[0021] Figure 3 is the top view sectional view of the partial structure of the utility model;

[0022] Figure 4 is the front view sectional view of the partial structure of the utility model;

[0023] Figure 5 is Figure 4 the partial enlarged view at A in

[0024] Main reference numeral description:

[0025] 1 Relay, 2 Wiring holes, 3 Dust-proof limiting mechanism, 301 Dust-proof shell, 302 Opening, 303 Inspection cover, 304 Wire-passing hole, 305 Installation groove, 306 Spring, 307 Connecting rod, 308 Limiting plate, 4 Connecting mechanism, 401 Connecting groove, 402 Rotating shaft. Specific embodiments

[0026] The technical solution of the patent of the present utility model will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work shall fall within the protection scope of the present utility model.

[0027] Embodiment

[0028] Refer to the attached Figures 1 - 5 , a monitoring and protection device for the phase sequence of commercial power in a computer room, comprising:

[0029] Relay 1, three wiring holes 2 are opened on the top surface of relay 1, and a dust-proof limiting mechanism 3 is arranged between wiring holes 2 and relay 1;

[0030] Specifically, a dust-proof shell 301 is arranged on the top of relay 1. An opening 302 is opened on the front side wall of dust-proof shell 301. An inspection cover 303 is arranged inside opening 302. Three wire-passing holes 304 are opened on the top wall of dust-proof shell 301. Three groups of installation grooves 305 are opened on the inner top wall of dust-proof shell 301. A spring 306 is installed inside installation groove 305. One end of spring 306 is fixedly installed with a connecting rod 307. The end of connecting rod 307 far from spring 306 is fixedly installed with a limiting plate 308. By setting the dust-proof limiting mechanism 3, dust-proof shell 301 is arranged outside wiring holes 2, which not only wraps the wiring holes in all directions to achieve dust-proofing, but also sets a limiting structure on dust-proof shell 301 to clamp and fix the cable. When the cable passes through wire-passing hole 304 and enters the inside of dust-proof shell 301, two limiting plates 308 will clamp and fix the outside of the cable under the action of spring 306, limit the cable, enhance its tensile strength, and by setting opening 302 and inspection cover 303, only need to turn inspection cover 303 upwards to expose the wiring part for inspection, and the operation is simple. An arc-shaped card slot is opened on limiting plate 308. Wire-passing hole 304 is communicated with opening 302. The arc-shaped card slot fits the shape of the cable more, and a rubber anti-slip pad is arranged on the surface of the arc-shaped card slot in contact with the cable. When limiting plate 308 clamps the cable, two limiting plates 308 block wire-passing hole 304 at the top of it, which can prevent dust from falling into dust-proof shell 301.

[0031] In this embodiment, a plurality of connection holes are provided in the relay 1, and bolts are screwed into the connection holes. In order to connect the cables and achieve the purpose of protecting the circuit, the connection holes and the wiring holes 2 are arranged in a through manner. A phase sequence protection module is arranged in the relay 1, and a conductive sheet is arranged near the bottom end in the wiring hole 2. The phase sequence protection module is electrically connected to the conductive sheet. After the cable is energized, when the phase sequence of the power supply matches the phase sequence input by the protector terminal, its output relay 1 is turned on, and the main control circuit of the device is turned on. When the phase sequence of the power supply changes and the phase sequence does not match, the output relay 1 cannot be turned on, thereby protecting the device and avoiding accidents. At the same time, the relay 1 can monitor the voltage and current, and judge whether the phase sequence is correct by measuring the phase difference between the voltages and currents of each phase.

[0032] In this embodiment, connection grooves 401 are provided on the left and right sides of the opening 302, and a rotating shaft 402 is rotatably connected inside the connection grooves 401. The rotating shaft 402 is a damping rotating shaft, which can control the rotation angle, so as to facilitate the inspection cover 303 to maintain positioning after being turned up, avoiding affecting the maintenance.

[0033] During implementation, the operations are carried out according to the following steps:

[0034] S1. First, turn up the inspection cover 303 upward to leave a space between the inspection cover 303 and the opening 302 for threading the cable, and pass the cable through the threading port 304 on the dust-proof shell 301;

[0035] S2. Then connect the cable to the wiring hole 2 and make contact with the conductive sheet inside the wiring hole 2, and then turn the inspection cover 303 back to its original position to keep the dust-proof shell 301 in a closed state;

[0036] S3. Finally, the two limit plates 308 will clamp and fix the outside of the cable under the action of the spring 306 to limit the cable and enhance its tensile strength.

[0037] When in use, by setting the dust-proof and limit mechanism 3, the dust-proof shell 301 is arranged outside the wiring hole 2, which not only wraps the wiring hole in all directions to achieve dust-proofing, but also sets a limit structure on the dust-proof shell 301 to clamp and fix the cable. When the cable passes through the threading port 304 and enters the inside of the dust-proof shell 301, the two limit plates 308 will clamp and fix the outside of the cable under the action of the spring 306 to limit the cable and enhance its tensile strength. And by setting the opening 302 and the inspection cover 303, only by turning up the inspection cover 303 can the wiring part be exposed for inspection, and the operation is simple.

[0038] The foregoing description of the specific exemplary embodiments of the present utility model is for purposes of illustration and exemplification. These descriptions are not intended to limit the present utility model to the precise forms disclosed, and it is apparent that many modifications and variations are possible in light of the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present utility model and its practical applications, so that those skilled in the art can implement and utilize the various different exemplary embodiments of the present utility model, as well as various different selections and modifications. The scope of the present utility model is intended to be defined by the claims and their equivalents.

Claims

1. A computer room mains phase sequence monitoring and protection device, characterized in that: include: A relay, wherein three wiring holes are provided on the top surface of the relay, and a dustproof limit mechanism is provided between the wiring holes and the relay; A dustproof shell is provided on the top of the relay, an opening is provided on the front side wall of the dustproof shell, an inspection cover is provided inside the opening, three threading holes are provided on the top wall of the dustproof shell, three groups of mounting grooves are provided on the inner top wall of the dustproof shell, a spring is installed inside the mounting groove, a connecting rod is fixedly installed on one end of the spring, and a limiting plate is fixedly installed on the end of the connecting rod away from the spring.

2. The computer room mains phase sequence monitoring and protection device according to claim 1 is characterized in that: The limiting plate is provided with an arc-shaped slot, and the threading port is communicated with the opening.

3. The computer room mains phase sequence monitoring and protection device according to claim 1 is characterized in that: The relay is provided with a plurality of connection holes, and bolts are screwed into the connection holes.

4. The computer room mains phase sequence monitoring and protection device according to claim 1 is characterized in that: A phase sequence protection module is arranged in the relay, a conductive sheet is arranged in the wiring hole near the bottom, and the phase sequence protection module is electrically connected to the conductive sheet.

5. The computer room mains phase sequence monitoring and protection device according to claim 1 is characterized in that: The position of the opening corresponds to the position of the wiring hole, and a connecting mechanism is provided between the inspection cover and the opening.

6. The computer room mains phase sequence monitoring and protection device according to claim 5 is characterized in that: The left and right sides of the opening are provided with connecting grooves, and the interior of the connecting grooves is rotatably connected with a rotating shaft.

7. The computer room mains phase sequence monitoring and protection device according to claim 6 is characterized in that: One end of the rotating shaft close to the inspection cover is fixedly connected to the inspection cover, and the connecting rod is slidably connected to the mounting groove.

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