CN213302344U - Compound electronic current-voltage sensor - Google Patents

Abstract

The utility model discloses a compound electronic type current-voltage sensor, including the casing and set up the current transformer coil inside the casing, the top and the equal fixedly connected with fixed plate in bottom of current transformer coil, and the inside of two fixed plates all through the inside fixed connection of bolt and casing. This compound electronic type current-voltage sensor, compared with the prior art, there is the mounting panel through the equal swing joint in inside both sides of casing, and the equal fixedly connected with semiconductor refrigeration piece in inside of two mounting panels, the mounting groove has all been seted up to the both sides of casing, open semiconductor refrigeration piece switch in two inside mounting panels of casing, the cold face that utilizes two semiconductor refrigeration pieces cools down to the inside current transformer coil of casing, the temperature of semiconductor refrigeration piece hot side distributes away through the filter screen, avoid the current transformer coil to work for a long time in high temperature environment and receive the damage, effectively prolong the life of sensor.

Description

Compound electronic current-voltage sensor

Technical Field

The utility model relates to an electrical components technical field specifically is a compound electronic type current-voltage sensor.

Background

In the existing electric power system, the measurement of voltage and current and real-time relay protection mostly adopt the traditional electromagnetic type voltage transformer and current transformer, the transformers all have iron cores, the measurement frequency band is narrow, the magnetic saturation is easy to occur to cause large errors, the size is large, the transformer is very heavy, the output is analog signals, and the capacitance type voltage transformer adopts the standard capacitance voltage divider, the size is large and heavy, and the analog signals are also output.

The existing current-voltage sensor can generate high heat in the sensor due to the fact that high-voltage current flows in the sensor when being used, and if the temperature of the inside of the sensor cannot be lowered, a coil in the sensor can be damaged under a long-time high-temperature condition, so that the service life of the sensor is greatly shortened.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a compound electronic type current-voltage sensor has solved current-voltage sensor and is carrying out the in-process that uses, and the sensor is inside because high tension current flows, can produce higher heat in the inside of sensor, if can not cool down the processing to the sensor is inside, can lead to the coil in the sensor to damage under long-time high temperature condition to reduce sensor life's problem by a wide margin.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a composite electronic current and voltage sensor comprises a shell and a current transformer coil arranged in the shell, wherein the top and the bottom of the current transformer coil are fixedly connected with a fixed plate, the insides of the two fixed plates are fixedly connected with the inside of the shell through bolts, the two sides of the inside of the shell are movably connected with mounting plates, and the insides of the two mounting plates are fixedly connected with semiconductor refrigeration sheets, the two sides of the shell are both provided with mounting grooves, the insides of the two mounting grooves are fixedly connected with filter screens, the back of the shell is movably connected with a back plate, the top and the bottom of the back plate are both fixedly connected with connecting blocks, the back surface of the shell is provided with a groove matched with the back plate, and the top and the bottom of recess inner wall all set up the spread groove with connecting block looks adaptation, the inside joint of the surface of connecting block and spread groove.

Preferably, the top and the bottom of mounting panel all fixedly connected with slider, and the top and the bottom of shells inner wall all set up with the spout of slider looks adaptation, two the surface of slider respectively with the inner wall sliding connection of two spouts.

Preferably, through holes are formed in two sides of the interior of the mounting plate, and the cold surface of the semiconductor refrigeration piece is close to the coil of the current transformer.

Preferably, the movable groove has all been seted up to the inside both sides of casing, and the equal sliding connection in inside of two movable grooves has the fly leaf, one side fixedly connected with fixture block of fly leaf, and the inside of connecting block set up with the draw-in groove of fixture block looks adaptation, one side of fixture block runs through movable groove and spread groove and extends to the inside of spread groove, and the fixture block extends to the inside sliding connection of the inside one side of spread groove and draw-in groove.

Preferably, one side fixedly connected with spring of fly leaf, and one end of spring and one side fixed connection of activity inslot wall, the top fixedly connected with movable block of fly leaf, and the inside sliding connection of the surface of movable block and casing.

Preferably, a voltage acquisition connector is fixedly connected to the upper side of the front face of the shell, and one end, located inside the shell, of the voltage acquisition connector is connected with the inside of the current transformer coil through a shielding wire.

Advantageous effects

The utility model provides a compound electronic type current-voltage sensor. Compared with the prior art, the method has the following beneficial effects:

(1) this compound electronic type current-voltage sensor, there is the mounting panel through the equal swing joint in inside both sides of casing, and the equal fixedly connected with semiconductor refrigeration piece in inside of two mounting panels, the mounting groove has all been seted up to the both sides of casing, and the equal fixedly connected with filter screen in inside of two mounting grooves, open semiconductor refrigeration piece switch in two inside mounting panels of casing, the cold face that utilizes two semiconductor refrigeration pieces cools down to the inside current transformer coil of casing, the temperature that semiconductor refrigeration piece distributed hot face is passed through the filter screen and is gone out, avoid current transformer coil to work for a long time in high temperature environment and receive the damage, effectively prolong the life of sensor.

(2) The back of the shell is movably connected with a back plate, the top and the bottom of the back plate are fixedly connected with connecting blocks, the back of the shell is provided with grooves matched with the back plate, the top and the bottom of the inner wall of each groove are provided with connecting grooves matched with the connecting blocks, the surface of each connecting block is clamped with the inside of each connecting groove, two sides of the inside of the shell are provided with movable grooves, the insides of the two movable grooves are respectively and slidably connected with a movable plate, one side of each movable plate is fixedly connected with a clamping block, the inside of each connecting block is provided with a clamping groove matched with the clamping block, one side of each clamping block penetrates through the movable grooves and the connecting grooves and extends to the inside of the connecting grooves, one side of each clamping block extending to the inside of the connecting grooves is slidably connected with the inside of the corresponding clamping groove, one side of each movable, the top fixedly connected with movable block of fly leaf, and the inside sliding connection of the surface of movable block and casing, when maintaining the sensor, through sliding two movable blocks to both sides, two movable blocks drive two fly leaves and slide at the activity inslot portion, one side of fly leaf is to the spring extrusion, and the opposite side of fly leaf drives the fixture block and breaks away from the draw-in groove, and connecting block and spread groove remove spacing relation this moment, and maintainer can be relaxed take out the backplate from the recess, maintains the electrical components of casing inside.

Drawings

FIG. 1 is a schematic diagram of the structure of the composite electronic current-voltage sensor of the present invention;

fig. 2 is a sectional view of the housing structure of the present invention;

fig. 3 is a cross-sectional view of the connecting block and the movable groove structure of the present invention.

In the figure: the device comprises a shell 1, a current transformer coil 2, a fixing plate 3, a mounting plate 4, a semiconductor refrigerating sheet 5, a mounting groove 6, a filter screen 7, a back plate 8, a connecting block 9, a groove 10, a connecting groove 11, a sliding block 12, a sliding groove 13, a through hole 14, a movable groove 15, a movable plate 16, a clamping block 17, a clamping groove 18, a spring 19, a movable block 20 and a voltage acquisition connector 21.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a composite electronic current and voltage sensor comprises a shell 1 and a current transformer coil 2 arranged inside the shell 1, wherein the top and the bottom of the current transformer coil 2 are fixedly connected with fixed plates 3, the interiors of the two fixed plates 3 are fixedly connected with the interior of the shell 1 through bolts, the two sides inside the shell 1 are movably connected with mounting plates 4, the interiors of the two mounting plates 4 are fixedly connected with semiconductor refrigerating sheets 5, the two sides of the shell 1 are respectively provided with a mounting groove 6, the interiors of the two mounting grooves 6 are respectively and fixedly connected with a filter screen 7, the back surface of the shell 1 is movably connected with a back plate 8, the top and the bottom of the back plate 8 are respectively and fixedly connected with a connecting block 9, the back surface of the shell 1 is provided with a groove 10 matched with the back plate 8, and the top and the bottom of the inner wall of the groove 10 are respectively provided with, the surface of the connecting block 9 is clamped with the inside of the connecting groove 11, the top and the bottom of the mounting plate 4 are both fixedly connected with a sliding block 12, the top and the bottom of the inner wall of the shell 1 are both provided with sliding grooves 13 matched with the sliding blocks 12, the surfaces of the two sliding blocks 12 are respectively connected with the inner walls of the two sliding grooves 13 in a sliding manner, both sides of the inside of the mounting plate 4 are both provided with through holes 14, the cold surface of the semiconductor refrigerating sheet 5 is close to the current transformer coil 2, both sides of the inside of the shell 1 are both provided with movable grooves 15, the inside of the two movable grooves 15 is both connected with a movable plate 16 in a sliding manner, one side of the movable plate 16 is fixedly connected with a clamping block 17, the inside of the connecting block 9 is provided with a clamping groove 18 matched with the clamping block 17, one side of the clamping block 17 penetrates through the movable grooves 15 and, a spring 19 is fixedly connected to one side of the movable plate 16, one end of the spring 19 is fixedly connected to one side of the inner wall of the movable groove 15, a movable block 20 is fixedly connected to the top of the movable plate 16, the surface of the movable block 20 is slidably connected to the inside of the housing 1, a voltage collecting connector 21 is fixedly connected to the upper side of the front surface of the housing 1, and one end of the voltage collecting connector 21 located inside the housing 1 is connected to the inside of the current transformer coil 2 through a shielding wire.

When the electronic current and voltage sensor is used, voltage detection is carried out on the composite electronic current and voltage sensor through the voltage acquisition connector 21, the temperature in the sensor shell 1 rises at the moment, the switches of the semiconductor refrigerating sheets 5 in the two mounting plates 4 in the shell 1 are opened, the cold faces of the two semiconductor refrigerating sheets 5 are utilized to cool the current transformer coil 2 in the shell 1, the temperature of the hot face of the semiconductor refrigerating sheet 5 is radiated through the filter screen 7, the current transformer coil 2 is prevented from being damaged in a long-time high-temperature environment, in addition, when the sensor is maintained, the two movable blocks 20 slide towards two sides, the two movable blocks 20 drive the two movable plates 16 to slide in the movable groove 15, one side of each movable plate 16 extrudes the spring 19, the other side of each movable plate 16 drives the fixture block 17 to be separated from the clamping groove 18, and the limiting relation between the connecting block 9, the maintainer can easily take the back plate 8 out of the groove 10 to maintain the electrical components inside the housing 1.

It is noted that, herein, relational terms such as first and second, and the like may 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. Also, 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 may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a compound electronic type current-voltage sensor, includes casing (1) and sets up current transformer coil (2) inside casing (1), its characterized in that: the top and the bottom of the current transformer coil (2) are both fixedly connected with a fixing plate (3), the interiors of the two fixing plates (3) are both fixedly connected with the interior of the shell (1) through bolts, the two sides of the interior of the shell (1) are both movably connected with mounting plates (4), the interiors of the two mounting plates (4) are both fixedly connected with semiconductor refrigerating sheets (5), the two sides of the shell (1) are both provided with mounting grooves (6), the interiors of the two mounting grooves (6) are both fixedly connected with filter screens (7), the back of the shell (1) is movably connected with a back plate (8), the top and the bottom of the back plate (8) are both fixedly connected with connecting blocks (9), the back of the shell (1) is provided with grooves (10) matched with the back plate (8), and the top and the bottom of the inner wall of each groove (10) are both provided with connecting grooves (11) matched with the connecting, the surface of the connecting block (9) is clamped with the inside of the connecting groove (11).

2. The compound electronic current-voltage sensor according to claim 1, wherein: the top and the bottom of mounting panel (4) all fixedly connected with slider (12), and the top and the bottom of casing (1) inner wall all set up spout (13) with slider (12) looks adaptation, two the surface of slider (12) respectively with the inner wall sliding connection of two spout (13).

3. The compound electronic current-voltage sensor according to claim 1, wherein: through-hole (14) have all been seted up to the inside both sides of mounting panel (4), the cold side of semiconductor refrigeration piece (5) is close to current transformer coil (2).

4. The compound electronic current-voltage sensor according to claim 1, wherein: activity groove (15) have all been seted up to the inside both sides of casing (1), and the equal sliding connection in inside of two activity grooves (15) has fly leaf (16), one side fixedly connected with fixture block (17) of fly leaf (16), and the inside of connecting block (9) set up with draw-in groove (18) of fixture block (17) looks adaptation, one side of fixture block (17) runs through activity groove (15) and spread groove (11) and extends to the inside of spread groove (11), and fixture block (17) extend to the inside sliding connection of one side of spread groove (11) inside and draw-in groove (18).

5. The compound electronic current-voltage sensor according to claim 4, wherein: one side fixedly connected with spring (19) of fly leaf (16), and one side fixed connection of one end and activity groove (15) inner wall of spring (19), the top fixedly connected with movable block (20) of fly leaf (16), and the inside sliding connection of the surface of movable block (20) and casing (1).

6. The compound electronic current-voltage sensor according to claim 1, wherein: the positive top fixed connection of casing (1) has voltage acquisition to connect (21), and voltage acquisition connects (21) and is located the internal connection of one end of casing (1) inside through shielded wire and current transformer coil (2).

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