CN214848050U

CN214848050U - Combined outdoor current transformer

Info

Publication number: CN214848050U
Application number: CN202121083766.2U
Authority: CN
Inventors: 薛强
Original assignee: Tianjin Zhongtian Kerui Electric Technology Co ltd
Current assignee: Tianjin Zhongtian Kerui Electric Technology Co ltd
Priority date: 2021-05-20
Filing date: 2021-05-20
Publication date: 2021-11-23
Anticipated expiration: 2031-05-20

Abstract

The utility model discloses a combined outdoor current transformer, which comprises a base, wherein the top end of the base is fixedly provided with an outer shell, the top end of the base is fixedly provided with an inner shell, the inner shell is arranged inside the outer shell, the inner part of the inner shell is fixedly provided with an iron core, the outer surface of the iron core is sleeved with a coil, the outer side wall of the inner shell is fixedly provided with a heat dissipation mechanism, the top end of the iron core is electrically connected with an inner connecting wire through a conducting wire, heat generated inside the inner shell can be absorbed through the arranged heat conduction plate, heat dissipation fins outside the heat conduction plate can dissipate the heat accumulated on the heat conduction plate, and the heat dissipation fins can dissipate the heat dissipated by the heat dissipation holes arranged on the heat conduction plate and a flow passage arranged at the bottom of the base, thereby achieving the heat dissipation effect and avoiding the failure of the inside of the device due to overhigh temperature, the service life of the device is prolonged.

Description

Combined outdoor current transformer

Technical Field

The utility model belongs to the technical field of current transformer, concretely relates to modular outdoor current transformer.

Background

The current transformer is based on the principle of electromagnetic induction. The current transformer is composed of a closed iron core and a winding. The primary winding of the current transformer has few turns and is connected in series in a circuit of current to be measured, so that all current of the circuit always flows through the current transformer, the secondary winding has more turns and is connected in series in a measuring instrument and a protection circuit, and the secondary circuit of the current transformer is always closed when the current transformer works, so that the impedance of a series coil of the measuring instrument and the protection circuit is very small, and the working state of the current transformer is close to short circuit.

The existing outdoor current transformer is used when the external weather is hot, and a certain temperature can be generated when the transformer works, so that the device is easy to break down due to overhigh temperature, manpower is consumed for maintenance, the service life of the device is also shortened, and the combined outdoor current transformer is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a modular outdoor current transformer to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a combined outdoor current transformer comprises a base, wherein an outer shell is fixedly installed at the top end of the base, an inner shell is fixedly installed at the top end of the base, the inner shell is arranged inside the outer shell, an iron core is fixedly installed inside the inner shell, a coil is sleeved on the outer surface of the iron core, a heat dissipation mechanism is fixedly installed on the outer side wall of the inner shell, the top end of the iron core is electrically connected with an inner connecting wire through a conducting wire, the top end of the inner connecting wire penetrates through the outer shell and extends to the outside, a rain shielding sheet is arranged on the outer side wall of the outer shell, four rain shielding sheets are arranged on the outer side wall of the outer shell, heat dissipation holes are formed in the bottom ends of the four rain shielding sheets, a plurality of heat dissipation holes are formed in the heat dissipation holes, a flow channel is formed in the bottom of the base, the inside of the outer shell is communicated with the outside through the flow channel, and a breathable sponge is movably installed inside the flow channel, the bottom of base articulates there is fixed frame, ventilative sponge passes through fixed frame to be fixed in the circulation.

Preferably, the heat dissipation mechanism comprises a heat conduction plate and a heat dissipation fin, the heat conduction plate is fixedly arranged on the outer side wall of the inner shell, and the heat dissipation fin is fixedly arranged on the outer side wall of the heat conduction plate.

Preferably, the top end of the outer shell is fixedly provided with a top cover, a threaded hole is formed in the top cover, and a screw is connected with the threaded hole in an internal thread manner.

Preferably, the fixing frame and the top cover are respectively fixed with the base and the shell body through screws.

Preferably, the bottom end of the fixing frame is fixedly provided with a pull rod, the outer surface of the pull rod is provided with anti-skid grains, and the center of the fixing frame is provided with a through hole matched with the flow channel.

Preferably, the bottom fixed mounting of base has the supporting leg, and the supporting leg is provided with four altogether, four the supporting leg evenly distributed is in the bottom of base.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) this outdoor current transformer of combination formula, through the heat-conducting plate that sets up, can absorb the heat of the inside production of interior casing, the fin in the heat-conducting plate outside can give off the heat of gathering on the heat-conducting plate, the rethread hides the louvre of seting up on the rain piece and the circulation channel of seting up bottom the base, can give off the heat outside of discharging with the fin to radiating effect has been reached, the device is avoided inside to break down because of the high temperature, the life of device has been improved.

(2) This outdoor current transformer of combination formula through louvre and the circulation channel that sets up, can make the inside air circulate, has guaranteed the realizability of device heat dissipation function, and through the ventilative sponge of circulation channel internally mounted, can block inside the humid gas of underground from circulation channel access device for inside is too moist, leads to the internal arrangement to take place the short circuit, has improved the practicality of device.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

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

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2 according to the present invention;

fig. 4 is a schematic perspective view of the cover plate of the present invention.

In the figure: 1. a base; 2. an outer housing; 3. an inner housing; 4. an iron core; 5. a coil; 6. a heat dissipation mechanism; 7. a heat conducting plate; 8. a heat sink; 9. internal wiring; 10. a rain shielding sheet; 11. heat dissipation holes; 12. a flow channel; 13. a breathable sponge; 14. a fixing frame; 15. a pull rod; 16. a through hole; 17. a top cover; 18. screws; 19. and (5) supporting legs.

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. 1-4, the present invention provides a combined outdoor current transformer, which comprises a base 1, an outer casing 2 fixedly mounted on the top of the base 1, an inner casing 3 fixedly mounted on the top of the base 1, the inner casing 3 disposed inside the outer casing 2, an iron core 4 fixedly mounted inside the inner casing 3, a coil 5 sleeved on the outer surface of the iron core 4, a heat dissipation mechanism 6 fixedly mounted on the outer side wall of the inner casing 3, an inner connecting wire 9 electrically connected to the top of the iron core 4 through a conducting wire, the top end of the inner connecting wire 9 penetrating through the outer casing 2 and extending to the outside, a rain shielding sheet 10 disposed on the outer side wall of the outer casing 2, four rain shielding sheets 10, heat dissipation holes 11 disposed at the bottom ends of the four rain shielding sheets 10, a plurality of heat dissipation holes 11 disposed at the bottom of the base 1, a flow channel 12 disposed at the bottom of the base 1, and a flow channel 12 communicating with the outside inside of the outer casing 2, the inside movable mounting of circulation channel 12 has ventilative sponge 13, and the bottom of base 1 articulates there is fixed frame 14, and ventilative sponge 13 passes through fixed frame 14 to be fixed in circulation channel 12.

In this embodiment, preferably, the heat dissipation mechanism 6 includes a heat conduction plate 7 and a heat dissipation fin 8, the heat conduction plate 7 is fixedly installed on the outer side wall of the inner housing 3, the heat dissipation fin 8 is fixedly installed on the outer side wall of the heat conduction plate 7, the heat generated inside the inner housing 3 can be absorbed through the heat conduction plate 7 which is arranged, and the heat dissipation fin 8 on the outer side of the heat conduction plate 7 can dissipate the heat gathered on the heat conduction plate 7, so as to achieve the heat dissipation effect.

In this embodiment, preferably, top fixed mounting of shell body 2 has top cap 17, and the inside threaded hole that has seted up of top cap 17, and threaded hole female connection has screw 18, through detachable screw 18, can make things convenient for the staff to lift off top cap 17, then just can maintain the inside power device of shell body 2.

In this embodiment, preferably, the fixing frame 14 and the top cover 17 are respectively fixed to the base 1 and the outer casing 2 through screws 18, and the fixing frame 14 can be stably fixed to the bottom of the base 1 through the screws 18, so that the top cover 17 is fixed to the top of the outer casing 2, and meanwhile, the fixing frame 14 and the top cover 17 can be conveniently detached by a worker.

In this embodiment, preferably, the bottom end of the fixed frame 14 is fixedly provided with the pull rod 15, the outer surface of the pull rod 15 is provided with the anti-slip pattern, the central part of the fixed frame 14 is provided with the through hole 16 matched with the flow channel 12, the fixed frame 14 can be conveniently opened by a worker through the set pull rod 15, and the external air inside the outer shell 2 can be circulated through the set through hole 16.

In this embodiment, preferably, the bottom fixed mounting of base 1 has supporting leg 19, and supporting leg 19 is provided with four altogether, and four supporting legs 19 evenly distributed are in the bottom of base 1, through the supporting leg 19 that sets up, can play the fixed effect of support to the device is whole, avoid base 1 direct and ground contact for inside wets easily.

The utility model discloses a theory of operation and use flow: when the interior of the device is damaged, a worker can disassemble the screw 18 and then take the top cover 17 out of the top end of the outer shell 2, at the moment, the worker can take the interior of the power device out, and maintain the power device, when the breathable sponge 13 in the flow channel 12 is too wet, the worker can disassemble the screw 18 in the fixed frame 14 and open the fixed frame 14 through the pull rod 15, so that the breathable sponge 13 can be taken out for replacement, the heat generated in the inner shell 3 can be absorbed through the arranged heat conducting plate 7, the heat radiating fins 8 outside the heat conducting plate 7 can radiate the heat accumulated on the heat conducting plate 7, the heat radiating fins 8 can be radiated out through the heat radiating holes 11 arranged on the rain shielding fins 10 and the flow channel 12 arranged at the bottom of the base 1, so that the heat radiating effect is achieved, and the failure caused by overhigh temperature in the interior of the device is avoided, the service life of the device is prolonged.

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 modular outdoor current transformer, includes base (1), its characterized in that: the rain shielding device is characterized in that an outer shell (2) is fixedly mounted at the top end of a base (1), an inner shell (3) is fixedly mounted at the top end of the base (1), the inner shell (3) is arranged inside the outer shell (2), an iron core (4) is fixedly mounted inside the inner shell (3), a coil (5) is sleeved on the outer surface of the iron core (4), a heat dissipation mechanism (6) is fixedly mounted on the outer side wall of the inner shell (3), the top end of the iron core (4) is electrically connected with an inner connecting wire (9) through a conducting wire, the top end of the inner connecting wire (9) penetrates through the outer shell (2) and extends to the outside, rain shielding sheets (10) are arranged on the outer side wall of the outer shell (2), four heat dissipation holes (11) are formed in the bottom ends of the rain shielding sheets (10), and a plurality of the heat dissipation holes (11) are formed in the outer side wall of the rain shielding sheets (10), the bottom of base (1) has been seted up and has been said (12), the inside of shell body (2) is linked together with the external world through flowing said (12), the inside movable mounting who flows said (12) has ventilative sponge (13), the bottom of base (1) articulates there is fixed frame (14), ventilative sponge (13) are fixed in flowing said (12) through fixed frame (14).

2. The modular outdoor current transformer of claim 1, wherein: the heat dissipation mechanism (6) comprises a heat conduction plate (7) and heat dissipation fins (8), the heat conduction plate (7) is fixedly arranged on the outer side wall of the inner shell (3), and the heat dissipation fins (8) are fixedly arranged on the outer side wall of the heat conduction plate (7).

3. The modular outdoor current transformer of claim 1, wherein: the top end of the outer shell (2) is fixedly provided with a top cover (17), a threaded hole is formed in the top cover (17), and a screw (18) is connected with the threaded hole in an internal thread manner.

4. A combined outdoor current transformer according to claim 3, characterised in that: the fixing frame (14) and the top cover (17) are respectively fixed with the base (1) and the outer shell (2) through screws (18).

5. The modular outdoor current transformer of claim 1, wherein: the bottom end of the fixed frame (14) is fixedly provided with a pull rod (15), the outer surface of the pull rod (15) is provided with anti-slip grains, and the center of the fixed frame (14) is provided with a through hole (16) matched with the flow channel (12).

6. The modular outdoor current transformer of claim 1, wherein: the bottom fixed mounting of base (1) has supporting leg (19), and supporting leg (19) are provided with four altogether, four supporting leg (19) evenly distributed is in the bottom of base (1).