CN217789304U

CN217789304U - Overvoltage protector for current transformer

Info

Publication number: CN217789304U
Application number: CN202221579871.XU
Authority: CN
Inventors: 梁彦萍
Original assignee: Nanjing Suyuan Kang'an Electric Co ltd
Current assignee: Nanjing Suyuan Kang'an Electric Co ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2022-11-11
Anticipated expiration: 2032-06-22

Abstract

The utility model belongs to the technical field of the overvoltage protector is explosion-proof, a current transformer overvoltage protector is disclosed. This current transformer overvoltage protector, including lower shell and last shell, the upper surface of shell has last shell through screw swing joint down, goes up the equal fixedly connected with back up coat in the inside of shell and lower shell, and the interior diapire swing joint of lower shell has the inside subassembly of overvoltage protector, goes up the one end of the interior left wall fixedly connected with locating lever of shell. This current transformer overvoltage protector utilizes the heat-conducting plate that sets up, the absorber plate, the soft board of plasticity, the pull ring, the connector link, the push pedal, the connecting rod, the cooperation of sealed piece is used and can be in the inside high temperature that produces of overvoltage protector back absorber plate with its heat absorption and transmit to the heat-conducting plate at last and make its volume that takes place expend with heat and contract with cold phenomenon increase plasticity soft board promote the push pedal in transmitting the air of the soft board cavity department of plasticity, it is ejecting with sealed piece at last, accomplish the release of overvoltage protector internal pressure.

Description

Overvoltage protector for current transformer

Technical Field

The utility model relates to an explosion-proof technical field of overvoltage protector specifically is a current transformer overvoltage protector.

Background

When all the electric appliances are used, the over-high and the under-low voltage of the power grid are most forbidden, no matter industrial equipment or household appliances have a rated voltage, and the voltage range is usually specified to be 170V-240V. If the voltage exceeds the insulation strength and the withstand voltage of the electric appliance, the electric appliance can generate heat, break down and burn out or even catch fire. The conditions that a large number of electric appliances in a large area are burnt out and burnt out are caused by unstable voltage and overhigh and overlow voltage caused by the fact that a zero line is stolen, equipment is aged, technical faults, artificial faults, natural disasters, power failure and power on again and the like, people are heavy in loss and have no claim, and people are in the process of following the financial and labor, and overvoltage, overvoltage and undervoltage protectors beneficial to people are additionally arranged to prevent electric fires and protect life and property safety.

The existing overvoltage protector for the current transformer can cause overhigh internal temperature of the overvoltage protector after being used for a long time, so that the internal pressure intensity is increased, and finally the potential safety hazard that the overvoltage protector explodes occurs, or the problem that the internal metal sheet is overheated to generate high temperature to cause the internal pressure intensity to increase and explode is caused when the voltage suddenly increases.

SUMMERY OF THE UTILITY MODEL

The invention aims to provide a current transformer overvoltage protector, which effectively solves the problem that the existing current transformer overvoltage protector can cause the internal temperature of the overvoltage protector to be too high after being used for a long time, thereby leading the internal pressure to increase and finally leading the potential safety hazard of explosion of the overvoltage protector to occur or can also cause the internal metal sheet to be overheated to generate high temperature when the voltage is suddenly increased, thereby leading the internal pressure to increase and leading the explosion problem to occur.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a current transformer overvoltage protector comprises a lower shell and an upper shell, wherein the upper surface of the lower shell is movably connected with the upper shell through a screw, reinforcing layers are fixedly connected inside the upper shell and the lower shell, an inner bottom wall of the lower shell is movably connected with an internal assembly of the overvoltage protector, an inner left wall of the upper shell is fixedly connected with one end of a positioning rod, the other end of the positioning rod is fixedly connected with a heat-conducting plate, the right side of the heat-conducting plate is fixedly connected with a heat absorbing plate, the left side of the heat absorbing plate is fixedly connected with a plastic soft plate, the plastic soft plate is installed between the two positioning rods, the left side of the plastic soft plate is fixedly connected with a pull ring, and one end of a connecting buckle is movably sleeved on the pull ring;

the plasticity soft board passes through pull ring and connector link fixedly connected with push pedal, just the right side of push pedal corresponds connector link fixedly connected with pull ring, the one end of the left side fixedly connected with connecting rod of push pedal, the other end fixedly connected with seal block of connecting rod, go up the shell and seted up the pressure release chamber, just seal block swing joint is in the inside in pressure release chamber, the connecting rod is close to one side fixedly connected with lug of push pedal, the outside swing joint of connecting rod has the starter, the right side fixedly connected with control switch of starter, the starter has the flabellum through bearing swing joint.

Through above-mentioned technical scheme, the cooperation that utilizes heat-conducting plate, absorber plate, the soft board of plasticity, push pedal, connecting rod and the sealed piece that sets up uses the absorber plate can absorb the heat and transmit to heat-conducting plate and the soft board of plasticity when inside temperature risees, and the soft board of plasticity promotes the push pedal and removes to push out the sealed piece because the characteristic volume increase of inside air expend with heat and contract with cold and accomplishes inside decompression and prevent that internal pressure risees and lead to the problem of explosion to take place.

Preferably, the sealing block is a cross-shaped sealing block, and the pressure release cavity is provided with a groove corresponding to the sealing block.

Through above-mentioned technical scheme, this application utilizes the cross form seal block that sets up to let the seal block fix in the pressure release intracavity when using, prevents that automatic breaking away from or rotatory poor problem of leakproofness from taking place.

Preferably, the pressure release cavity is provided with a plurality of sections, the left section is provided with a cross shape, the middle section is provided with a round platform shape, and the right section is provided with a cylindrical shape.

Through above-mentioned technical scheme, this application utilizes multistage formula pressure release chamber can conveniently release the inside pressure of overvoltage protector when using.

Preferably, the plastic soft plate is in a circular arc shape, the left side of the plastic soft plate is at the top end of the circular arc shape, and air is filled in the space between the plastic soft plate and the heat absorbing plate.

Through above-mentioned technical scheme, this application utilizes the better characteristic of expend with heat and contract with cold nature of air can conveniently make it take place the convenient control push pedal of deformation with the soft board jack-up of plasticity when using.

Preferably, the number of the positioning rods, the heat conducting plate, the heat absorbing plate, the plastic soft plate, the push plate, the connecting rod and the sealing block is two, each independent structure forms a group, and the central lines of the two groups of structures are symmetrically arranged on the left inner wall and the right inner wall of the upper shell by taking the central line of the upper shell as a reference.

Through above-mentioned technical scheme, this application utilizes the cooperation of two sets of structures to use when using and can accelerate the release of internal pressure and high temperature, thereby prevents that the too high pressure increase that leads to of internal temperature from causing the problem of explosion to take place.

Preferably, one side of the heat absorbing plate, which is far away from the inner wall of the upper shell, is provided with an annular disc.

Through above-mentioned technical scheme, this application utilizes the cyclic annular disc that the absorber plate set up can increase the area of contact of absorber plate and high-temperature gas and make its heat-absorbing capacity improve and can expand by the more quick messenger plasticity soft board of ability when using.

By adopting the technical scheme, the beneficial effects of the utility model are that:

1. this current transformer overvoltage protector utilizes the heat-conducting plate that sets up, the absorber plate, the soft board of plasticity, the pull ring, the connector link, the push pedal, the connecting rod, the cooperation of sealed piece is used and can be in the inside high temperature that produces of overvoltage protector back absorber plate with its heat absorption and transmit to the heat-conducting plate at last and make its volume that takes place expend with heat and contract with cold phenomenon increase plasticity soft board promote the push pedal in transmitting the air of the soft board cavity department of plasticity, it is ejecting with sealed piece at last, accomplish the release of overvoltage protector internal pressure.

2. This current transformer overvoltage protector utilizes the cooperation of the lug, control switch, starter and the flabellum that set up to use when the push pedal removes the lug to follow and remove touch control switch and accelerate the starter start later the flabellum rotation through control switch and make the inside high temperature high pressure of overvoltage protector discharge fast, prevents that overvoltage protector from exploding.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 2 in accordance with the present invention;

fig. 4 is an enlarged view of a portion a in fig. 3 according to the present invention.

In the figure: the device comprises a lower shell 1, an upper shell 2, a reinforcing layer 3, an internal component of an overvoltage protector 4, a positioning rod 5, a heat conducting plate 6, a heat absorbing plate 7, a plastic soft plate 8, a pull ring 9, a connecting buckle 10, a push plate 11, a connecting rod 12, a sealing block 13, a pressure release cavity 14, a convex block 15, a control switch 16, a starter 17 and fan blades 18.

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 efforts all belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-4, the present invention provides a technical solution: a current transformer overvoltage protector comprises a lower shell 1 and an upper shell 2, the upper surface of the lower shell 1 is movably connected with the upper shell 2 through screws, reinforcing layers 3 are fixedly connected with the interiors of the upper shell 2 and the lower shell 1, an inner bottom wall of the lower shell 1 is movably connected with an overvoltage protector internal component 4, one end of a positioning rod 5 is fixedly connected with an inner left wall of the upper shell 2, the other end of the positioning rod 5 is fixedly connected with a heat conduction plate 6, the right side of the heat conduction plate 6 is fixedly connected with a heat absorption plate 7, the left side of the heat absorption plate 7 is fixedly connected with a plastic soft plate 8, the plastic soft plate 8 is installed between the two positioning rods 5, the left side of the plastic soft plate 8 is fixedly connected with a pull ring 9, and the pull ring 9 is movably sleeved with one end of a connecting buckle 10;

the plastic soft board 8 is fixedly connected with a push board 11 through a pull ring 9 and a connecting buckle 10, the right side of the push board 11 is fixedly connected with the pull ring 9 corresponding to the connecting buckle 10, the left side of the push board 11 is fixedly connected with one end of a connecting rod 12, the other end of the connecting rod 12 is fixedly connected with a sealing block 13, the upper shell 2 is provided with a pressure release cavity 14, the sealing block 13 is movably connected inside the pressure release cavity 14, one side, close to the push board 11, of the connecting rod 12 is fixedly connected with a lug 15, the outer side of the connecting rod 12 is movably connected with a starter 17, the right side of the starter 17 is fixedly connected with a control switch 16, the starter 17 is movably connected with a fan blade 18 through a bearing, the lug 15, the control switch 16 and the fan blade 18 are matched to enable the lug 15 to move to touch the control switch 16 when the push board 11 moves, the control switch 16 starts the starter 17, and then the fan blade 18 rotates to accelerate the discharge of high-temperature and high-pressure gas inside the overvoltage protector to be discharged quickly, and overpressure protector is prevented from being exploded;

referring to fig. 1, the sealing block 13 is a cross-shaped sealing block, and the pressure release chamber 14 is a groove corresponding to the sealing block 13.

Referring to fig. 3-4, the pressure release chamber 14 is configured as a multi-segment structure, the left segment is configured as a cross, the middle segment is configured as a circular truncated cone, and the right segment is configured as a cylinder.

Referring to fig. 3 to 4, the flexible plastic sheet 8 is formed in a circular arc shape, and the left side thereof is formed at the tip of the circular arc shape, while the space between the flexible plastic sheet 8 and the heat absorbing plate 7 is filled with air.

Referring to fig. 3, the positioning rod 5, the heat conducting plate 6, the heat absorbing plate 7, the soft plastic plate 8, the push plate 11, the connecting rod 12 and the sealing block 13 are all set to two in number, and each single structure forms a group, the two groups of structures are symmetrically arranged on the left inner wall and the right inner wall of the upper shell 2 by taking the center line of the upper shell 2 as a reference, the heat conducting plate 6, the heat absorbing plate 7, the soft plastic plate 8, the pull ring 9, the connecting buckle 10, the push plate 11, the connecting rod 12 and the sealing block 13 are used in cooperation, so that the heat absorbing plate 7 absorbs heat of the high temperature generated inside the overvoltage protector and transmits the heat to the heat conducting plate 6, and finally transmits the heat to the air at the cavity of the soft plastic plate 8 to cause the heat absorbing plate 7 to expand with heat and contract with cold so as to increase the volume of the soft plastic plate 8, thereby pushing the push plate 11, and finally ejecting the sealing block 13, and completing the release of the internal pressure of the overvoltage protector.

Referring to fig. 3, the side of the absorber plate 7 away from the inner wall of the upper housing 2 is provided with an annular disc.

When the overvoltage protector of the current transformer works, if the internal temperature of the overvoltage protector rises, the heat absorbing plate 7 can absorb heat and transmit the heat to the heat conducting plate 6, then the heat conducting plate 6 heats air at the space of the plastic soft plate 8, when the temperature is too high, the air expands to increase the volume of the plastic soft plate 8, then the push plate 11 is ejected outwards, the push plate 11 pushes the connecting rod 12 to move outwards, the connecting rod 12 pushes the sealing block 13 to push the sealing block 13 out of the pressure release cavity 14 along with the push plate 11, meanwhile, the lug 15 touches the control switch 16 to open the starter 17, the starter 17 drives the fan blade 18 to rotate to accelerate the discharge of the internal heat of the overvoltage protector after being started, the problem that the pressure is increased due to the fact that the internal temperature of the overvoltage protector is too high and the pressure is increased to cause explosion is solved, and the internal temperature of the overvoltage protector is reduced due to the fact that the internal air of the plastic soft plate 8 expands with heat and contracts with cold, the volume is reduced, the pull ring 9 and the connecting buckle 10 are used for controlling the push plate 11, the connecting rod 12 and the sealing block 13 to move inwards until the sealing block 13 returns to the position.

It should be noted that, in this document, relational terms such as first and second, and the like are 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

1. The utility model provides a current transformer overvoltage protector, includes lower shell (1) and last shell (2), its characterized in that: the upper surface of the lower shell (1) is movably connected with an upper shell (2) through a screw, reinforcing layers (3) are fixedly connected inside the upper shell (2) and the lower shell (1), an inner bottom wall of the lower shell (1) is movably connected with an inner assembly (4) of an overvoltage protector, one end of a positioning rod (5) is fixedly connected with an inner left wall of the upper shell (2), the other end of the positioning rod (5) is fixedly connected with a heat conducting plate (6), the right side of the heat conducting plate (6) is fixedly connected with a heat absorbing plate (7), a plastic soft plate (8) is fixedly connected to the left side of the heat absorbing plate (7), the plastic soft plate (8) is installed between the two positioning rods (5), a pull ring (9) is fixedly connected to the left side of the plastic soft plate (8), and the pull ring (9) is movably sleeved with one end of a connecting buckle (10);

plasticity soft board (8) are through pull ring (9) and connector link (10) fixedly connected with push pedal (11), just the right side of push pedal (11) corresponds connector link (10) fixedly connected with pull ring (9), the one end of the left side fixedly connected with connecting rod (12) of push pedal (11), the other end fixedly connected with seal block (13) of connecting rod (12), pressure release chamber (14) have been seted up in epitheca (2), just seal block (13) swing joint is in the inside of pressure release chamber (14), one side fixedly connected with lug starter (15) that connecting rod (12) are close to push pedal (11), the outside swing joint of connecting rod (12) has starter (17), the right side fixedly connected with control switch (16) of starter (17), starter (17) have flabellum (18) through bearing swing joint.

2. A current transformer overvoltage protector according to claim 1, wherein: the sealing block (13) is a cross-shaped sealing block, and the pressure release cavity (14) is provided with a groove which is matched with the sealing block (13).

3. A current transformer overvoltage protector according to claim 2, wherein: the pressure release cavity (14) is arranged to be multi-section, the left section is arranged to be cross-shaped, the middle section is arranged to be round table-shaped, and the right section is arranged to be cylindrical.

4. A current transformer overvoltage protector according to claim 3, wherein: the plastic soft board (8) is arc-shaped, the left side of the plastic soft board is arranged at the top end of the arc-shaped, and air is filled in the space between the plastic soft board (8) and the heat absorbing plate (7).

5. A current transformer overvoltage protector according to claim 4, wherein: the number of the positioning rods (5), the heat conducting plates (6), the heat absorbing plates (7), the plastic soft plates (8), the push plates (11), the connecting rods (12) and the sealing blocks (13) is two, each independent structure forms one group, and the central lines of the upper shell (2) and the lower shell (2) are symmetrically arranged on the left inner wall and the right inner wall of the upper shell (2) as the reference in two groups of structures.

6. The current transformer overvoltage protector of claim 5, wherein: and an annular disc is arranged on one side of the heat absorbing plate (7) far away from the inner wall of the upper shell (2).