CN219626458U - Transformer protection device - Google Patents

Abstract

The utility model discloses a transformer protection device, which comprises a shell, a fire extinguisher, a triggering component and a heat radiation component, wherein the fire extinguisher is connected in the shell and is provided with a safety bolt, a handle and a nozzle, the safety bolt is connected with the handle to stop the handle from rotating, the nozzle faces to the transformer, the triggering component is connected in the shell, at least part of the triggering component can move on the shell to enable the triggering component to have a normal position for closing the fire extinguisher and a triggering position for opening the fire extinguisher, the heat radiation component is connected with the shell, and at least part of the heat radiation component can move on the shell to enable the heat radiation component to have a heat radiation position for enabling the shell to be communicated with the outside and a blocking position for preventing the shell from being communicated with the outside. When the transformer is on fire, the trigger component drives the transformer to be opened to extinguish the fire of the transformer, and meanwhile, the heat dissipation component blocks the inside of the shell from being communicated with the outside, so that the outside oxygen is prevented from entering the shell, and the fire is further restrained.

Description

Transformer protection device

Technical Field

The utility model relates to the technical field of power systems, in particular to a transformer protection device.

Background

The transformer is basic equipment for power transmission and distribution, is widely applied to the fields of industry, agriculture, traffic, urban communities and the like, and is an indispensable part in a power system.

In the related art, when the operation of the transformer fails, a warning signal is sent out to an operator on duty in time through the relay protection device, or a tripping command is directly sent out to a controlled breaker to stop the operation of the transformer, however, when parts on the transformer are aged or accidents such as short circuit occur, the local overheat of the transformer can possibly cause the ignition of the transformer even if the relay protection device stops the operation of the transformer, and if the operation is not processed in time, the safe and stable operation of a power system is seriously affected.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, the embodiment of the utility model provides a transformer protection device with an automatic fire extinguishing function.

The transformer protection device comprises a shell, a fire extinguisher, a triggering component and a heat dissipation component, wherein the shell is internally suitable for installing a transformer, the fire extinguisher is connected into the shell and is provided with a safety bolt, a handle and a nozzle, the safety bolt is connected to the handle to stop the handle from rotating, the nozzle faces the transformer, the triggering component is connected into the shell and at least part of the triggering component can move on the shell to enable the triggering component to have a normal position and a triggering position, the triggering component enables the safety bolt to be kept on the fire extinguisher to keep the fire extinguisher closed in the normal position, the triggering component drives the safety bolt to be separated from the fire extinguisher and drives the handle to rotate to open the fire extinguisher, and at least part of the heat dissipation component is movable on the shell to enable the heat dissipation component to have a heat dissipation position and a blocking position, and the inside of the shell is communicated with the outside through the heat dissipation component in the blocking position, and the inside of the shell is communicated with the outside in the blocking position.

When the transformer is on fire, the triggering component drives the transformer to be opened so as to extinguish the fire of the transformer, and meanwhile, the heat dissipation component blocks the interior of the shell from being communicated with the outside, so that external oxygen is prevented from entering the shell, and the fire is further restrained.

In some embodiments, the transformer protection device of the embodiment of the present utility model further comprises a thermal insulation box detachably connected in the housing, the fire extinguisher is connected in the thermal insulation box, and the nozzle penetrates through the thermal insulation box and is arranged outside the thermal insulation box.

In some embodiments, the trigger assembly comprises:

the pull rod is connected to the thermal insulation box and can slide on the thermal insulation box along a first direction, the axis of the pull rod is arranged along the first direction, the first end of the pull rod is positioned in the thermal insulation box and is connected with the safety bolt, and the second end of the pull rod penetrates through the side wall of the thermal insulation box and is positioned outside the thermal insulation box;

the first end of the first elastic piece is propped against the heat insulation box, and the second end of the first elastic piece is propped against the second end of the pull rod;

the clamping block is connected to the pull rod and is positioned outside the heat insulation box;

the first sliding piece is connected to the thermal insulation box and is positioned outside the thermal insulation box, the first sliding piece can slide on the thermal insulation box along a second direction, the second direction is orthogonal to the first direction, the clamping block is positioned between the first sliding piece and the thermal insulation box in the normal position, the first end of the first sliding piece abuts against the clamping block, and in the triggering position, the first sliding piece is separated from the clamping block;

the second elastic piece is connected to the handle, and in the triggering position, the second elastic piece drives the handle to rotate under the action of self-elasticity so as to open the fire extinguisher.

In some embodiments, the trigger assembly further comprises a first heat-sensitive element connected to and located outside the incubator, at least a portion of the first heat-sensitive element being in abutment with the second end of the first slider or at least a portion of the first heat-sensitive element being detachably connected to the second end of the first slider.

In some embodiments, the heat dissipating assembly comprises:

the frame is connected to the shell, a first end of the frame is located in the shell, and a second end of the frame penetrates through the side wall of the shell and is located outside the shell;

the sealing plate is rotatably connected to the frame and is positioned on the inner side of the frame, at least part of the sealing plate is separated from the frame in the heat dissipation position so that the inside of the shell is communicated with the outside through the frame, and the peripheral wall of the sealing plate is contacted with the inner peripheral wall of the frame in the blocking position so as to block the frame;

the second sliding piece is slidably connected to the frame and located in the shell, the first end of the second sliding piece is located outside the frame, the second end of the second sliding piece penetrates through the frame and located inside the frame, the second end of the second sliding piece abuts against the sealing plate to block the sealing plate from rotating in the heat dissipation position, and the second sliding piece is separated from the sealing plate in the blocking position.

In some embodiments, the heat dissipating assembly further includes a second heat-sensitive element connected to the frame, at least a portion of the second heat-sensitive element being detachably connected to the first end of the second slider, or at least a portion of the second heat-sensitive element being abutted against the first end of the second slider, the second slider being inclined downward in a direction from the first end to the second end thereof.

In some embodiments, the heat dissipation assembly further includes a heat dissipation plate, the heat dissipation plate is connected to the second end of the frame, and a plurality of heat dissipation through holes are formed in the heat dissipation plate.

In some embodiments, the fire extinguisher and the triggering component are multiple, the fire extinguishers are distributed on the shell at intervals, and the fire extinguishers and the triggering components are in one-to-one correspondence; the heat dissipation components are multiple and are distributed on the shell at intervals.

In some embodiments, the transformer protection device of the present utility model further includes a cabinet door, the cabinet door having a viewing window thereon, the housing having an opening, the cabinet door being coupled to the housing, the cabinet door being movable on the housing such that the cabinet door has an open position in which at least a portion of the cabinet door is separated from the housing to open the opening, and a closed position in which the cabinet door seals the opening.

In some embodiments, the cabinet door is rotatably coupled to the housing, or the cabinet door is slidably coupled to the housing.

Drawings

Fig. 1 is a schematic perspective view of a transformer protection device according to an embodiment of the present utility model, in which a cabinet door is in a closed state.

Fig. 2 is a schematic perspective view of a transformer protection device according to an embodiment of the present utility model, in which a cabinet door is in an opened state.

Fig. 3 is a schematic perspective view of an incubator, fire extinguisher and trigger assembly according to an embodiment of the present utility model, wherein the cover of the incubator is in a closed state.

Fig. 4 is a top view of the incubator, fire extinguisher and trigger assembly according to an embodiment of the present utility model, wherein the cover of the incubator is in an open state.

Fig. 5 is an enlarged view of a portion of fig. 4 a in accordance with the present utility model.

Fig. 6 is a cross-sectional view of the trigger assembly portion of fig. 4 taken along the direction A-A in accordance with the present utility model.

Fig. 7 is a front view of a heat dissipating assembly according to an embodiment of the present utility model.

Fig. 8 is a schematic perspective view of a heat dissipating assembly according to an embodiment of the present utility model, wherein the heat dissipating plate is not shown.

Fig. 9 is an enlarged view of a portion of b of fig. 8 in accordance with the present utility model.

Reference numerals:

a housing 1;

a fire extinguisher 2; a safety catch 21; a handle 22; a nozzle 23;

a trigger assembly 3; a pull rod 31; a first elastic member 32; a latch 33; a first slider 34; a second elastic member 35; a first thermosensitive element 36;

a heat dissipation assembly 4; a frame 41; a sealing plate 42; a second slider 43; a second thermosensitive element 44; a heat dissipation plate 45; a rotating shaft 46;

a thermal insulation box 5;

a cabinet door 6.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

The transformer protection device according to the embodiment of the present utility model is described below with reference to the accompanying drawings.

As shown in fig. 1 to 4, the transformer protection device of the embodiment of the present utility model includes a housing 1, a fire extinguisher 2, a trigger assembly 3, and a heat dissipation assembly 4.

Wherein, the cavity is arranged in the shell 1, the transformer is arranged in the cavity, the fire extinguisher 2 is connected in the shell 1, the fire extinguisher 2 is provided with a safety bolt 21, a handle 22 and a nozzle 23, the safety bolt 21 is connected on the handle 22 to prevent the handle 22 from rotating, the nozzle 23 faces the transformer, the trigger assembly 3 is connected in the shell 1, at least part of the trigger assembly 3 can move on the shell 1 to enable the trigger assembly 3 to have a normal position and a trigger position, in the normal position, the trigger assembly 3 enables the safety bolt 21 to be kept on the fire extinguisher 2 to keep the fire extinguisher 2 closed, in the trigger position, the trigger assembly 3 drives the safety bolt 21 to be separated from the fire extinguisher 2 and drives the handle 22 to rotate to open the fire extinguisher 2, the heat dissipation assembly 4 is connected to the shell 1, at least part of the heat dissipation assembly 4 can move on the shell 1 to enable the heat dissipation assembly 4 to have a heat dissipation position and a blocking position, in the heat dissipation assembly 4 is communicated with the outside, in the blocking position, and the heat dissipation assembly 4 blocks the inside of the shell 1 from being communicated with the outside.

It should be noted that, when the transformer works normally, the trigger assembly 3 is kept at a normal position, the heat dissipation assembly 4 is kept at a heat dissipation position, and the interior of the shell 1 is communicated with the outside through the heat dissipation assembly 4 to dissipate heat of the transformer; when the transformer or the parts in the shell 1 break down and fire, the trigger assembly 3 moves to the trigger position, the trigger assembly 3 drives the safety bolt 21 to be separated from the fire extinguisher 2 and drives the handle 22 to rotate so as to open the fire extinguisher 2, the heat dissipation assembly 4 moves to the blocking position so as to block the communication between the inside and the outside of the shell 1, and the oxygen concentration in the shell 1 is reduced so as to inhibit the fire.

When the transformer is on fire, the trigger assembly 3 drives the transformer to be opened to extinguish the fire of the transformer, and meanwhile, the heat dissipation assembly 4 blocks the inside of the shell 1 from being communicated with the outside, and prevents external oxygen from entering the shell 1, so that the fire is further restrained.

As shown in fig. 2 to 4, in some embodiments, the transformer protection device of the present utility model further includes a heat insulation box 5, the heat insulation box 5 is detachably connected to the inside of the case 1, the fire extinguisher 2 is connected to the inside of the heat insulation box 5 and fixed by a strap, and the nozzle 23 penetrates the heat insulation box 5 and is disposed outside of the heat insulation box 5.

Thus, in these embodiments, the transformer protection device of the present embodiment separates the fire extinguisher 2 from the inner space of the housing 1 by the heat insulation box 5, and the heat insulation box 5 reduces the adverse effect of the temperature rise in the housing 1 on the fire extinguisher 2 when the transformer or the components in the housing 1 fail to fire.

As shown in fig. 3-6, in some embodiments, the trigger assembly 3 includes a pull rod 31, a first resilient member 32, a latch 33, a first slider 34, and a second resilient member 35.

The pull rod 31 is connected to the thermal insulation box 5 and can slide along a first direction (front-rear direction shown in fig. 4) on the thermal insulation box 5, an axis of the pull rod 31 is arranged along the first direction, a first end (rear end shown in fig. 4) of the pull rod 31 is located in the thermal insulation box 5 and is connected with the safety catch 21, a second end (front end shown in fig. 4) of the pull rod 31 penetrates through a side wall of the thermal insulation box 5 and is located outside the thermal insulation box 5, a first end (rear end shown in fig. 5) of the first elastic piece 32 abuts against the thermal insulation box 5, a second end (rear end shown in fig. 5) of the first elastic piece 32 abuts against the second end of the pull rod 31, a clamping block 33 is connected to the pull rod 31 and is located outside the thermal insulation box 5, a first sliding piece 34 is connected to the thermal insulation box 5 and is located outside the thermal insulation box 5, a second direction (upper-lower direction shown in fig. 6) is perpendicular to the first direction, a first clamping block 33 is located at a position orthogonal to the first direction, a first end (rear end shown in fig. 6) of the thermal insulation box 2 abuts against the first elastic piece 33, a handle 35 is triggered by the action of the first elastic piece, and the first sliding piece 34 is located at a position of the first elastic piece 33 under the first end is located at the first end and the first end is located at the position of the first elastic piece 33 and the first sliding piece is opposite to the first end 35, the first sliding piece is located at the position 35 and is opposite to the second end 2.

It should be noted that, when the transformer works normally, the clamping block 33 abuts against the first sliding member 34 to block the first elastic member 32 from driving the pull rod 31 to move, so that the safety catch 21 is kept on the handle 22 to block the second elastic member 35 from driving the handle 22 to rotate, so that the trigger assembly 3 is kept at the normal position, when the transformer or other parts in the housing 1 are on fire, the first sliding member 34 slides on the housing 1 and is separated from the clamping block 33, the first elastic member 32 drives the pull rod 31 to pull the safety catch 21 to separate from the handle 22 under the action of self elastic force, and the second elastic member 35 drives the handle 22 to rotate under the action of self elastic force to open the fire extinguisher 2.

As shown in fig. 5 and 6, the trigger assembly 3 further includes a first heat-sensitive element 36, where the first heat-sensitive element 36 is connected to the incubator 5 and located outside the incubator 5, and at least part of the first heat-sensitive element 36 abuts against the second end of the first slider 34, or at least part of the first heat-sensitive element 36 is detachably connected to the second end of the first slider 34.

Thus, in these embodiments, when the transformer or a component within the housing 1 fires, the first thermal element 36 expands thermally to push the first slider 34 away from the latch 33.

Alternatively, the first thermal element 36 is a thermal bimetal or nickel alloy.

As shown in fig. 3 to 6, in a preferred embodiment, the first slider 34 is located above the pull rod 31 and the first slider 34 is slidable in the up-down direction on the housing 1, the first thermosensitive element 36 abuts against the upper end of the first slider 34, and the end of the pull rod 31 located inside the incubator 5 is bent downward to form a hook.

After the fire extinguisher 2 is installed, the pull rod 31 is rotated to enable the hook to be located above the safety catch 21, the first sliding piece 34 is pulled upwards, the pull rod 31 is pushed into the heat insulation box 5 until the hook is located right above the safety catch 21, the pull rod 31 is rotated to enable a part of the hook to be located in the circular ring of the safety catch 21, the upward pulling force on the first sliding piece 34 is canceled, the first sliding piece 34 moves downwards under the action of self gravity until the first sliding piece 34 abuts against the pull rod 31, the first elastic piece 32 pushes the pull rod 31 to move outwards of the heat insulation box 5 under the action of self elastic force until the clamping block 33 abuts against the first sliding piece 34, and reset of the trigger assembly 3 is completed.

As shown in fig. 2 and 7 to 9, in some embodiments, the heat dissipation assembly 4 includes a frame 41, a sealing plate 42, and a second slider 43, the frame 41 is connected to the housing 1, a first end of the frame 41 is located in the housing 1, a second end of the frame 41 extends through a sidewall of the housing 1 and is located outside the housing 1, the sealing plate 42 is rotatably connected to the frame 41 and is located inside the frame 41, in a heat dissipation position, at least part of the sealing plate 42 is separated from the frame 41 to enable the interior of the housing 1 to communicate with the outside through the frame 41, the transformer dissipates heat through a space between the frame 41 and the sealing plate 42, in a blocking position, a peripheral wall of the sealing plate 42 contacts an inner peripheral wall of the frame 41 to block the frame 41, and blocks outside air from entering the housing 1, the second slider 43 is slidably connected to the frame 41 and is located in the housing 1, a first end of the second slider 43 extends through the frame 41 and is located inside the frame 41, in a heat dissipation position, a second end of the second slider 43 is located against the sealing plate 42 to rotate against the sealing plate 42, in the blocking position, and the second slider 43 is separated from the sealing plate 42.

As shown in fig. 9, the heat dissipating assembly 4 further includes a second heat-sensitive element 44, where the second heat-sensitive element 44 is connected to the frame 41, and at least part of the second heat-sensitive element 44 is detachably connected to the first end of the second slider 43, or at least part of the second heat-sensitive element 44 abuts against the first end of the second slider 43, and the second slider 43 is inclined downward in a direction from the first end to the second end.

It should be noted that, when the transformer is operating normally, at least part of the sealing plate 42 is separated from the frame 41, and the second sliding member 43 blocks the sealing plate 42 from rotating on the frame 41 to keep the sealing plate 42 in the current position, so that the heat dissipation assembly 4 is kept in the heat dissipation position; when the transformer or the parts in the casing 1 are on fire, the second thermosensitive element 44 is heated and expanded to drive the second sliding piece 43 to separate from the sealing plate 42, and the sealing plate 42 rotates on the frame 41 until the peripheral wall of the sealing plate 42 contacts with the inner peripheral wall of the frame 41.

As shown in fig. 7 and 8, in a preferred embodiment, a rotating shaft 46 is rotatably connected to the frame 41, the axis of the rotating shaft 46 is disposed along the left-right direction, the rotating shaft 46 is close to the upper end of the frame 41, a sealing plate 42 is connected to the rotating shaft 46, the upper end of the sealing plate 42 is located above the rotating shaft 46, the lower end of the sealing plate 42 is located below the rotating shaft 46, a second sliding member 43 is connected to the side wall of the frame 41, and the second sliding member 43 is inclined downward in the left-right direction, and the upper end of the second heat-sensitive element 44 abuts against the second sliding member 43.

When the heat dissipating assembly 4 is reset, the second sliding member 43 is pulled obliquely upward to separate the second sliding member 43 from the sealing plate 42, the sealing plate 42 is pushed to separate the upper and lower ends of the sealing plate 42 from the frame 41, and then the pulling force acting on the second sliding member 43 is cancelled, and the second sliding member 43 slides obliquely downward under its own gravity until the second sliding member 43 abuts against the second heat sensitive assembly, so that the heat dissipating assembly 4 is reset.

Alternatively, the second heat sensitive element 44 is a thermal bimetal or nickel alloy.

As shown in fig. 1, in some embodiments, the heat dissipation assembly 4 further includes a heat dissipation plate 45, where the heat dissipation plate 45 is connected to the second end of the frame 41, and a plurality of heat dissipation through holes are formed on the heat dissipation plate 45 to reduce impurities entering the housing 1 through the heat dissipation assembly 4.

In some embodiments, the fire extinguisher 2 and the triggering components 3 are multiple, the fire extinguishers 2 are distributed on the shell 1 at intervals, and the fire extinguishers 2 and the triggering components 3 are in one-to-one correspondence; the heat dissipation components 4 are a plurality of, and a plurality of heat dissipation components 4 are distributed on the shell 1 at intervals.

As shown in fig. 1 and 2, in some embodiments, the transformer protection device according to the present utility model further includes a cabinet door 6, where the cabinet door 6 is provided with a viewing window, the housing 1 has an opening, the cabinet door 6 is connected to the housing 1, and the cabinet door 6 is movable on the housing 1 such that the cabinet door 6 has an open position in which at least a portion of the cabinet door 6 is separated from the housing 1 to open the opening, and a closed position in which the cabinet door 6 blocks the opening.

Further, the cabinet door 6 may be rotatably connected to the housing 1, or the cabinet door 6 may be slidably connected to the housing 1.

In a specific embodiment, there are two cabinet doors 6, and both cabinet doors 6 are hinged to the housing 1 by hinges.

In another specific embodiment, there are two cabinet doors 6, and both cabinet doors 6 are slidably connected to the housing 1 through slide rails.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and include, for example, either fixedly attached, detachably attached, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the utility model.

Claims (10)

1. A transformer protection device, comprising:

a housing, in which a transformer is adapted to be mounted;

a fire extinguisher connected within the housing, the fire extinguisher having a safety catch connected to the handle to block rotation of the handle, a handle and a nozzle facing the transformer;

a trigger assembly connected within the housing, at least a portion of the trigger assembly being movable on the housing to cause the trigger assembly to have a normal position in which the trigger assembly retains the safety catch on the fire extinguisher to hold the fire extinguisher closed and a triggered position in which the trigger assembly causes the safety catch to disengage from the fire extinguisher and the handle to rotate to open the fire extinguisher;

the heat dissipation assembly is connected to the shell, at least part of the heat dissipation assembly is movable on the shell so that the heat dissipation assembly has a heat dissipation position and a blocking position, the heat dissipation position is formed in the shell through the heat dissipation assembly, the heat dissipation assembly is communicated with the outside, and the heat dissipation assembly is blocked in the blocking position, so that the inside of the shell is communicated with the outside.

2. The transformer protection device of claim 1, further comprising a thermal insulation box detachably connected within the housing, the fire extinguisher connected within the thermal insulation box, the nozzle extending through the thermal insulation box and being disposed outside the thermal insulation box.

3. The transformer protection device of claim 2, wherein the trigger assembly comprises:

the pull rod is connected to the thermal insulation box and can slide on the thermal insulation box along a first direction, the axis of the pull rod is arranged along the first direction, the first end of the pull rod is positioned in the thermal insulation box and is connected with the safety bolt, and the second end of the pull rod penetrates through the side wall of the thermal insulation box and is positioned outside the thermal insulation box;

the first end of the first elastic piece is propped against the heat insulation box, and the second end of the first elastic piece is propped against the second end of the pull rod;

the clamping block is connected to the pull rod and is positioned outside the heat insulation box;

the first sliding piece is connected to the thermal insulation box and is positioned outside the thermal insulation box, the first sliding piece can slide on the thermal insulation box along a second direction, the second direction is orthogonal to the first direction, the clamping block is positioned between the first sliding piece and the thermal insulation box in the normal position, the first end of the first sliding piece abuts against the clamping block, and in the triggering position, the first sliding piece is separated from the clamping block;

the second elastic piece is connected to the handle, and in the triggering position, the second elastic piece drives the handle to rotate under the action of self-elasticity so as to open the fire extinguisher.

4. The transformer protection device of claim 3, wherein the trigger assembly further comprises a first heat sensitive element coupled to and external to the incubator, at least a portion of the first heat sensitive element being in abutment with the second end of the first slider or at least a portion of the first heat sensitive element being removably coupled to the second end of the first slider.

5. The transformer protection device of claim 1, wherein the heat sink assembly comprises:

the frame is connected to the shell, a first end of the frame is located in the shell, and a second end of the frame penetrates through the side wall of the shell and is located outside the shell;

the sealing plate is rotatably connected to the frame and is positioned on the inner side of the frame, at least part of the sealing plate is separated from the frame in the heat dissipation position so that the inside of the shell is communicated with the outside through the frame, and the peripheral wall of the sealing plate is contacted with the inner peripheral wall of the frame in the blocking position so as to block the frame;

the second sliding piece is slidably connected to the frame and located in the shell, the first end of the second sliding piece is located outside the frame, the second end of the second sliding piece penetrates through the frame and located inside the frame, the second end of the second sliding piece abuts against the sealing plate to block the sealing plate from rotating in the heat dissipation position, and the second sliding piece is separated from the sealing plate in the blocking position.

6. The transformer protection device of claim 5, wherein the heat sink assembly further comprises a second heat-sensitive element coupled to the frame, at least a portion of the second heat-sensitive element being removably coupled to the first end of the second slider or at least a portion of the second heat-sensitive element being in abutment with the first end of the second slider, the second slider being downwardly sloped in a direction from the first end to the second end thereof.

7. The transformer protection device of claim 5, wherein the heat dissipating assembly further comprises a heat dissipating plate coupled to the second end of the frame, and the heat dissipating plate has a plurality of heat dissipating through holes.

8. The transformer protection device according to any one of claims 1-7, wherein a plurality of fire extinguishers and trigger assemblies are provided, a plurality of fire extinguishers are distributed at intervals on the housing, and a plurality of fire extinguishers and trigger assemblies are in one-to-one correspondence;

the heat dissipation components are multiple and are distributed on the shell at intervals.

9. The transformer protection device of any one of claims 1-7, further comprising a cabinet door having a viewing window thereon, the housing having an opening, the cabinet door being coupled to the housing, the cabinet door being movable on the housing to provide the cabinet door with an open position in which at least a portion of the cabinet door is separated from the housing to open the opening, and a closed position in which the cabinet door seals the opening.

10. The transformer protection device of claim 9, wherein the cabinet door is rotatably connected to the housing or the cabinet door is slidably connected to the housing.