CN215933307U - Current transformer protective cover - Google Patents

Abstract

The utility model discloses a current transformer protective cover which comprises a mounting plate, a protective cover, a fixing mechanism and a ventilation mechanism, wherein the mounting plate is fixedly connected with the protective cover; mounting a plate: a convex block is arranged in the middle of the upper end surface of the mounting plate, and second bolts are inserted into the mounting holes symmetrically arranged on the left side and the right side of the upper end of the mounting plate; the ventilation mechanism: the air pipe is symmetrically arranged in the middle of the mounting plate and extends to the front side and the upper end of the mounting plate, the first filter screen is arranged at the inlet of the front end of the air pipe, the second filter screen is arranged in the rectangular opening in the middle of the convex block, and the rectangle is communicated with the air pipe corresponding to the lower part of the rectangular opening; protective cover: it passes through bolt fixed connection in the up end of mounting panel, and this current transformer protection casing, dual fixed is more firm, also pays attention to inside clean when guaranteeing cover body intensity, high-efficient radiating, provides suitable installation environment for current transformer.

Description

Current transformer protective cover

Technical Field

The utility model relates to the technical field of electricians, in particular to a current transformer protective cover.

Background

In the power supply line, the current difference is from several amperes to tens of thousands of amperes, the voltage difference is from several volts to millions of volts, and the current and voltage in the line are high, so that direct measurement is very dangerous. In order to facilitate the conversion of the secondary instrument measurement into more uniform current and voltage, the transformer is used for converting current and voltage and electrically isolating. Most display instruments are needle-type current-voltage meters, so most secondary currents of the current transformers are ampere-level (such as 5) and most electric quantity measurement is digitalized with the development of times, sampled signals of a computer are milliampere-level (0-5V, 4-20mA and the like), and secondary currents of the micro current transformers are milliampere-level and mainly play a role of bridges between the transformers and sampling. Miniature current transformer is called "for the instrument current transformer", current transformer needs special protective apparatus to ensure in the use, often realize with the help of the safety cover, the safety cover can provide suitable environment of depositing for current transformer, but current protection casing simple structure, fixed mode is single, can not effectually prevent that the dust from getting into, the input/output of failing the fully considered circuit, the inconvenient dismantlement installation in input/output position is dustproof, protection architecture hardness is hardly fully considered to simple small opening cover body structure, good heat dissipation and clean environment, therefore, we provide a current transformer protection casing.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to overcome the existing defects, and provide the current transformer protective cover which is simple to install, has two layers of fixation, can effectively prevent dust from entering and can effectively solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a current transformer protective cover comprises a mounting plate, a protective cover, a fixing mechanism and a ventilation mechanism;

mounting a plate: a convex block is arranged in the middle of the upper end surface of the mounting plate, and second bolts are inserted into the mounting holes symmetrically arranged on the left side and the right side of the upper end of the mounting plate;

the ventilation mechanism: the air pipe is symmetrically arranged in the middle of the mounting plate and extends to the front side and the upper end of the mounting plate, the first filter screen is arranged at the inlet of the front end of the air pipe, the second filter screen is arranged in the rectangular opening in the middle of the convex block, and the rectangle is communicated with the air pipe corresponding to the lower part of the rectangular opening;

protective cover: the protective cover is fixedly connected to the upper end face of the mounting plate through bolts, sealing mechanisms are symmetrically arranged on the left side and the right side of the protective cover, and the inner wall of the protective cover is in sliding connection with the outer wall of the convex block;

a fixing mechanism: it sets up in the middle part up end of convex block, and dual fixed is more firm, and quick installation is difficult for droing, and the easy to detach separation fully considers the input/output of circuit, and the installation and the fixing of the circuit of being convenient for increase the leakproofness simultaneously and prevent that the flying dust from getting into, also regard inside clean when guaranteeing cover body intensity, high-efficient radiating, satisfy the user demand, provide suitable installation environment for current transformer.

Further, fixed establishment includes fixed baseplate, adjusting screw, limiting plate and spacing post, the fixed baseplate symmetry sets up in the middle part up end of protruding type piece, and adjusting screw passes through the equal symmetrical rotation of bearing and connects in the upper end left and right sides of fixed baseplate, and the equal threaded connection in middle part of adjusting screw has the limiting plate, and the equal symmetrical fixed connection in the upper end left and right sides of fixed baseplate of spacing post, limiting plate upper end slide opening sliding connection of spacing post and adjacent homonymy realizes compressing tightly fast fixedly.

Further, fixed establishment still includes T type fixed block and first bolt, T type fixed block is stainless steel T type fixed block, is located between two limiting plates on same PMKD through first bolt symmetry fixedly connected with T type fixed block, and is spacing fixed around quick.

Further, fixed establishment still includes the stopper, the equal symmetrical fixed connection of stopper is in the upper end left and right sides of fixed baseplate, avoids the pressure loss equipment.

Further, sealing mechanism includes sleeve, sealed lid, sealed dish and sealed gum cover, the sleeve symmetry sets up in the outer terminal surface of the left and right sides of safety cover, and the wire hole position on sleeve and the safety cover corresponds and communicates, and the equal threaded connection in telescopic outside end department has sealed lid, and the inner wall of sealed lid all is connected with sealed dish through fixing bearing rotation, and the middle part of sealed dish evenly is provided with the line hole, and the inside in line hole all is provided with sealed gum cover, and the installation and the fixed of the circuit of being convenient for increases the leakproofness simultaneously and prevents the fly ash entering.

Furthermore, the upper end face of the mounting plate is provided with a rubber pad, and the inner side face of the rubber pad is in inosculation contact with the bottom end of the outer edge of the protective cover, so that the sealing performance is enhanced.

Furthermore, the up end of safety cover is provided with the data plate, and the personnel of being convenient for are directly perceived accurate to be differentiateed.

Compared with the prior art, the utility model has the beneficial effects that: this current transformer protection casing has following benefit:

1. firstly, a mounting plate is placed in a place to be mounted, second bolts penetrate through mounting holes symmetrically arranged on the left side and the right side of the upper end of the mounting plate and are in threaded connection with threaded holes of mounting positions, so that the mounting plate and a structure above the mounting plate are quickly mounted and fixed, a current transformer to be used is placed on the upper surface of the middle part of a fixed base plate, the limiting plates are driven to slide downwards to carry out first pressing on the current transformer under the sliding guide effect of a limiting column and sliding holes at the upper ends of adjacent limiting plates on the same side by rotating an adjusting screw rod, so that the current transformer can be quickly clamped for the first time, a T-shaped fixing block is symmetrically and fixedly connected between two limiting plates on the same fixed base plate through the first bolts after pressing, the current transformer is fixed and limited forwards and backwards by utilizing two T-shaped fixing blocks, the fixing is tighter, the T-shaped fixing block is less prone to fall off and is convenient to mount and dismount, the installation is fixed firm, satisfies the installation and deposits the demand, for current transformer's the good protection barrier that provides.

2. The electric wire passes sleeve, sealed lid, line hole and sealed gum cover and links to each other with inside current transformer wiring end, passes through fastening bolt and mounting panel fixed connection with the safety cover, and the sealed lid of rethread rotation keeps sealed dish motionless this moment, also the electric wire can not take place relative wrench movement exactly, with sealed lid and sealed sleeve threaded connection, the installation and the fixed of the circuit of being convenient for increase the leakproofness simultaneously, prevent that the flying dust from getting into, the input/output of fully considering the circuit.

3. When using, outside flowing air can carry out the heat dissipation of changing the current through ventilation duct and rectangle mouth, guarantees the high-efficient heat dissipation of inside equipment, can carry out effective filtration through first filter screen and second filter screen respectively when the input flows gas, does not influence self hardness of the cover body and guarantees also to regard inside clean when high-efficient radiating, satisfies the user demand, provides suitable installation environment for current transformer.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a protective cover according to the present invention;

FIG. 3 is a schematic view of the mounting plate structure of the present invention;

fig. 4 is a schematic structural diagram of the fixing mechanism of the present invention.

In the figure: the air-conditioning device comprises a mounting plate 1, a protective cover 2, a fixing mechanism 3, a fixing base plate 31, a limiting block 32, an adjusting screw 33, a T-shaped fixing block 34, a first bolt 35, a limiting plate 36, a limiting column 37, a second bolt 4, a rubber pad 5, a convex block 6, a sealing mechanism 7, a sealing sleeve 71, a sealing cover 72, a sealing disc 73, a sealing rubber sleeve 74, a ventilation mechanism 8, a first filter screen 81, a second filter screen 82, a ventilation pipeline 83 and a nameplate 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present embodiment provides a technical solution: a current transformer protective cover comprises a mounting plate 1, a protective cover 2, a fixing mechanism 3 and a ventilation mechanism 8;

mounting plate 1: the middle part of the upper end face of the mounting plate is provided with a convex block 6, the convex block 6 provides a mounting platform, second bolts 4 are inserted into mounting holes symmetrically formed in the left side and the right side of the upper end of the mounting plate 1, the upper end face of the mounting plate 1 is provided with a rubber pad 5, the inner side face of the rubber pad 5 is in fit contact with the bottom end of the outer edge of the protective cover 2, the rubber pad 5 ensures the sealing property of a joint, the mounting plate 1 is placed at a place to be mounted firstly, the second bolts 4 penetrate through the mounting holes symmetrically formed in the left side and the right side of the upper end of the mounting plate 1 and are in threaded connection with threaded holes of mounting positions, and the mounting plate 1 and the upper structure are mounted and fixed quickly;

the ventilation mechanism 8: the heat dissipation device comprises a first filter screen 81, a second filter screen 82 and a ventilation pipeline 83, wherein the ventilation pipeline 83 is symmetrically arranged in the middle of the mounting plate 1 and extends to the front side and the upper end of the mounting plate 1, the first filter screen 81 is arranged at the inlet of the front end of the ventilation pipeline 83, the second filter screen 82 is arranged in a rectangular opening in the middle of the convex block 6, and the rectangle is communicated with the ventilation pipeline 83 corresponding to the lower part;

protective cover 2: the protective cover is fixedly connected to the upper end face of a mounting plate 1 through bolts, the upper end face of the protective cover 2 is provided with a nameplate 9, the protective cover 2 is symmetrically provided with sealing mechanisms 7 from left to right, the inner wall of the protective cover 2 is in sliding connection with the outer wall of a convex block 6, each sealing mechanism 7 comprises a sleeve 71, a sealing cover 72, a sealing disc 73 and a sealing rubber sleeve 74, the sleeves 71 are symmetrically arranged on the left outer end face and the right outer end face of the protective cover 2, the sleeves 71 correspond to and are communicated with wire guide holes in the protective cover 2, the outer side ends of the sleeves 71 are all in threaded connection with the sealing covers 72, the inner walls of the sealing covers 72 are all in rotary connection with the sealing discs 73 through fixed bearings, wire holes are evenly formed in the middle parts of the sealing discs 73, the sealing rubber sleeves 74 are all arranged inside the wire holes, electric wires pass through the sleeves 71, the sealing covers 72, the wire holes and the sealing rubber sleeves 74 to be connected with the wiring ends of internal current transformers, the protective cover is fixedly connected with the mounting plate 1 through fastening bolts, then, the sealing cover 72 is rotated, the sealing disc 73 is kept still at the moment, namely, the electric wire cannot be twisted relatively, the sealing cover 72 is in threaded connection with the sealing sleeve 71, so that the circuit can be conveniently installed and fixed, meanwhile, the sealing performance is improved, and the entering of flying dust is prevented;

the fixing mechanism 3: the fixing mechanism 3 comprises a fixing base plate 31, adjusting screws 33, limiting plates 36 and limiting columns 37, the fixing base plate 31 is symmetrically arranged on the upper end surface of the middle part of the convex block 6, the adjusting screws 33 are symmetrically and rotatably connected to the left side and the right side of the upper end of the fixing base plate 31 through bearings, the limiting plates 36 are in threaded connection with the middle part of the adjusting screws 33, the limiting columns 37 are symmetrically and fixedly connected to the left side and the right side of the upper end of the fixing base plate 31, the limiting columns 37 are in sliding connection with sliding holes in the upper ends of the limiting plates 36 on the same adjacent side, the fixing mechanism 3 further comprises T-shaped fixing blocks 34 and first bolts 35, the T-shaped fixing blocks 34 are stainless steel T-shaped fixing blocks, the T-shaped fixing blocks 34 are symmetrically and fixedly connected between the two limiting plates 36 on the same fixing base plate 31 through the first bolts 35, the fixing mechanism 3 further comprises limiting blocks 32, and the limiting blocks 32 are the lowest limiting blocks when pressed downwards, avoid the pressure loss equipment, the equal symmetrical fixed connection in fixed baseplate 31's of stopper 32 upper end left and right sides, the current transformer who will use is placed in fixed baseplate 31's middle part upper surface, through rotatory adjusting screw 33, under the sliding guide effect of the limiting plate 36 upper end slide opening of limiting post 37 and adjacent homonymy, the lapse that drives limiting plate 36 compresses tightly current transformer's first way, can carry out a quick clamp earlier like this, put after compressing tightly T type fixed block 34 between two limiting plates 36 that lie in same fixed baseplate 31 through first bolt 35 symmetry fixed connection, it is fixed spacing around utilizing two T type fixed blocks 34 to make current transformer, it is fixed tighter, more difficult droing.

The working principle of the current transformer protective cover provided by the utility model is as follows: firstly, the mounting plate 1 is placed in a place to be mounted, the second bolts 4 penetrate through mounting holes symmetrically arranged on the left side and the right side of the upper end of the mounting plate 1 and are in threaded connection with threaded holes of mounting positions, so that the mounting plate 1 and the upper structure are quickly mounted and fixed, the current transformer to be used is placed on the upper surface of the middle part of the fixed base plate 31, the limiting plate 36 is driven to slide downwards to carry out first pressing on the current transformer under the sliding guide effect of the limiting column 37 and the sliding hole at the upper end of the limiting plate 36 on the same adjacent side by rotating the adjusting screw rod 33, so that the rapid clamping can be firstly carried out, the T-shaped fixing blocks 34 are symmetrically and fixedly connected between the two limiting plates 36 on the same fixed base plate 31 through the first bolts 35 after pressing, the current transformer is fixed and limited forwards and backwards by utilizing the two T-shaped fixing blocks 34, and is fixed more tightly, more difficult droing, the electric wire passes sleeve 71, sealed lid 72, line hole and sealed gum cover 74 link to each other with the current transformer wiring end of inside, pass through fastening bolt and mounting panel 1 fixed connection with the safety cover, rethread rotary seal lid 72, keep sealed dish 73 motionless this moment, also namely the electric wire can not take place relative wrench movement, with sealed lid 72 and sealed sleeve 71 threaded connection, be convenient for the installation and the fixing of circuit, increase the leakproofness simultaneously, prevent the fly ash entering, when using, outside flowing air can carry out the heat dissipation of current conversion through air duct 83 and rectangle mouth, guarantee the high-efficient heat dissipation of internal equipment, can effectively filter through first filter screen 81 and second filter screen 82 respectively when the input flowing gas, guarantee inside clean environment of depositing, satisfy the user demand, provide suitable installation environment for current transformer.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (7)

1. A current transformer protection casing which characterized in that: comprises a mounting plate (1), a protective cover (2), a fixing mechanism (3) and a ventilation mechanism (8);

mounting plate (1): a convex block (6) is arranged in the middle of the upper end surface of the mounting plate, and second bolts (4) are inserted into mounting holes symmetrically arranged on the left side and the right side of the upper end of the mounting plate (1);

ventilation mechanism (8): the air pipe type air conditioner comprises a first filter screen (81), a second filter screen (82) and an air pipe (83), wherein the air pipe (83) is symmetrically arranged in the middle of a mounting plate (1) and extends to the front side and the upper end of the mounting plate (1), the first filter screen (81) is arranged at the inlet of the front end of the air pipe (83), the second filter screen (82) is arranged in a rectangular opening in the middle of a convex block (6), and the rectangular opening is communicated with the air pipe (83) corresponding to the lower part;

protective cover (2): the protective cover is fixedly connected to the upper end face of the mounting plate (1) through bolts, sealing mechanisms (7) are symmetrically arranged on the left and right of the protective cover (2), and the inner wall of the protective cover (2) is in sliding connection with the outer wall of the convex block (6);

fixing mechanism (3): which is arranged on the upper end surface of the middle part of the convex block (6).

2. A current transformer shield according to claim 1, wherein: fixed establishment (3) are including fixed base plate (31), adjusting screw (33), limiting plate (36) and spacing post (37), fixed base plate (31) symmetry sets up in the middle part up end of convex type piece (6), and adjusting screw (33) are connected in the upper end left and right sides of fixed base plate (31) through the equal symmetrical rotation of bearing, and the equal threaded connection in middle part of adjusting screw (33) has limiting plate (36), and the equal symmetrical fixed connection in the upper end left and right sides of fixed base plate (31) of spacing post (37), limiting plate (36) upper end slide opening sliding connection of spacing post (37) and adjacent homonymy.

3. A current transformer shield according to claim 2, wherein: fixed establishment (3) still include T type fixed block (34) and first bolt (35), T type fixed block (34) are stainless steel T type fixed block, are located between two limiting plate (36) on same PMKD (31) through first bolt (35) symmetry fixedly connected with T type fixed block (34).

4. A current transformer shield according to claim 2, wherein: the fixing mechanism (3) further comprises limiting blocks (32), and the limiting blocks (32) are symmetrically and fixedly connected to the left side and the right side of the upper end of the fixing base plate (31).

5. A current transformer shield according to claim 1, wherein: sealing mechanism (7) are including sleeve (71), sealed lid (72), sealed dish (73) and sealed gum cover (74), sleeve (71) symmetry sets up in the outer terminal surface of the left and right sides of safety cover (2), and wire hole position on sleeve (71) and safety cover (2) corresponds and communicates, and the equal threaded connection in outside end department of sleeve (71) has sealed lid (72), and the inner wall of sealed lid (72) all rotates through fixing bearing to be connected with sealed dish (73), and the middle part of sealed dish (73) evenly is provided with the line hole, and the inside in line hole all is provided with sealed gum cover (74).

6. A current transformer shield according to claim 1, wherein: the upper end face of the mounting plate (1) is provided with a rubber pad (5), and the inner side face of the rubber pad (5) is in inosculation contact with the outer edge bottom end of the protective cover (2).

7. A current transformer shield according to claim 1, wherein: the upper end face of the protective cover (2) is provided with a nameplate (9).

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