CN111682428B

CN111682428B - Box transformer structure

Info

Publication number: CN111682428B
Application number: CN202010480137.7A
Authority: CN
Inventors: 孟海军; 傅爱; 俞其峰; 吴小莉; 徐立力; 张菊英; 李林林
Original assignee: Ningbo Aokes Intelligent Technology Co ltd
Current assignee: Ningbo Aokes Intelligent Technology Co ltd
Priority date: 2020-05-30
Filing date: 2020-05-30
Publication date: 2024-03-19
Anticipated expiration: 2040-05-30
Also published as: CN111682428A

Abstract

The utility model relates to a box transformer structure, which comprises a box body, wherein a first vertical partition plate is arranged in the box body, a low-pressure chamber and a transformer chamber which are arranged from front to back are formed in the box body by being separated by the first vertical partition plate, and the front side of the low-pressure chamber is provided with an opening; the low-voltage cabinet is positioned in the low-voltage chamber and internally provided with a circuit breaker; the transformer is positioned in the transformer room; the two ends of the copper bar are respectively connected with the transformer and the circuit breaker; the method is characterized in that: the copper bar is located in the low-pressure chamber locally, the front side of the copper bar is provided with a protective cover, a space for accommodating the copper bar is formed between the protective cover and the first vertical partition board in a surrounding mode, and a first opening for allowing the first end of the copper bar to pass through is formed in the first vertical partition board. The existence of safety cover prevents to touch the copper bar and take place the risk of electric shock when operating personnel enters into the low pressure room through uncovered.

Description

Box transformer structure

Technical Field

The utility model belongs to the technical field of power distribution stations, and particularly relates to a box transformer structure.

Background

The box-type transformer station is a prefabricated indoor and outdoor compact power distribution equipment of factory, which is integrated with high-voltage switch equipment, distribution transformer and low-voltage power distribution equipment according to a certain wiring scheme, i.e. the functions of transformer step-down, low-voltage power distribution and the like are organically combined together and are installed in a fully-closed movable steel structure box body which is dampproof, rust-proof, dustproof, rat-proof, fireproof, antitheft, heat-insulating and the like.

The current box transformer structure is like a Chinese patent of utility model (a delta-shaped arrangement box transformer structure), its patent number is CN201820233382.6 (grant notice number is CN 207925997U), a delta-shaped arrangement box transformer structure is disclosed, including the box shell, set up transformer room, high-voltage chamber and low-voltage chamber in the box shell, transformer room, high-voltage chamber and low-voltage chamber be the horizontal delta-shaped arrangement, low-voltage chamber and high-voltage chamber length the same and set up side by side, transformer room be located low-voltage chamber and high-voltage chamber left side, low-voltage chamber and high-voltage chamber between set up a baffle, transformer room right side set up No. two baffles, no. one baffle and No. two baffles divide into three independent spaces with transformer room, transformer room left side sets up dry-type transformer, high-voltage chamber inside right side set up the maintenance entry, box shell outside set up the fan, dry-type transformer passes through the high-voltage cable and links to each other with high-voltage chamber, copper bar is passed through the low-voltage line and is connected with the low-voltage busbar through the fixed connection.

The low-voltage connection copper bar in the patent is directly exposed, and an operator easily touches a charged body when overhauling, so that potential safety hazards are generated.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a box transformer structure for preventing contact with copper bars aiming at the current state of the art.

The technical scheme adopted for solving the technical problems is as follows: a box transformer structure comprises

A tank body, wherein a first vertical partition plate is arranged in the tank body, a low-pressure chamber and a transformer chamber which are arranged from front to back are formed in the tank body by being separated by the first vertical partition plate, and the front side of the low-pressure chamber is provided with an opening;

the low-voltage cabinet is positioned in the low-voltage chamber and internally provided with a circuit breaker;

the transformer is positioned in the transformer room;

the two ends of the copper bar are respectively connected with the transformer and the circuit breaker;

the method is characterized in that: the copper bar is located in the low-pressure chamber locally, the front side of the copper bar is provided with a protective cover, a space for accommodating the copper bar is formed between the protective cover and the first vertical partition board in a surrounding mode, and a first opening for allowing the first end of the copper bar to pass through is formed in the first vertical partition board.

Preferably, the number of the low-voltage cabinets is two, the left and right sides of the protective cover are arranged at intervals, and the left and right sides of the protective cover are respectively contacted with the low-voltage cabinets on the corresponding sides and are connected to the low-voltage cabinets on the corresponding sides.

For the maintenance of convenient realization to the copper bar, the safety cover is the U-shaped, including front bezel, upper plate and hypoplastron, the front bezel include with the connector that the low-voltage cabinet is connected, the opening has been seted up on the connector, and this connector is in be provided with on the position of opening and cover or open the apron of opening.

In order to prevent short circuit from occurring between two sets of copper bar groups, one low-voltage cabinet is correspondingly provided with a set of copper bar groups, each copper bar group comprises copper bars, each copper bar group comprises a soft connecting part connected with a transformer and a hard connecting part connected with a circuit breaker, the soft connecting parts in the two copper bar groups are arranged at left and right intervals, and a first insulating plate arranged vertically is arranged between the soft connecting parts of the two copper bar groups. The electrical distance between the soft connecting parts of the two copper bar groups is increased, and the short circuit between the two copper bar groups is prevented.

In order to prevent short circuit between two adjacent copper bars in each copper bar group, each copper bar group comprises 3 copper bars, and a vertically arranged second insulating plate is arranged between soft connecting parts of at least two adjacent copper bars in 3 copper bars in each copper bar group. The existence of the second insulating plate increases the electrical distance between the two copper bar flexible connection parts and prevents the short circuit between the two copper bars.

Preferably, the copper bar is located between two low-voltage cabinets, and each low-voltage cabinet is provided with a second opening for the second end of the copper bar to pass through on the side wall facing the copper bar.

In order to conveniently enter the low-pressure chamber, door plates are arranged on the left side edge and the right side edge of the opening of the low-pressure chamber in a rotating mode, and the two door plates are in a butt joint state to close the opening.

In order to cool down the low-voltage cabinet better, the purpose of cooling is achieved, each door plate is provided with an air cooler, each door plate is provided with a mouth at the position corresponding to the air cooler, the front wall plate of each low-voltage cabinet is provided with a vent communicated with the corresponding side mouth, two mouths are communicated with each other through the vents on the left side and the right side and two second openings to form a runner, and the air cooler is positioned in the runner. So, cold wind air current of air-cooler on two door plant produces the convection current through vent and second opening, has realized cooling down the copper bar when cooling down the low-voltage cabinet, prevents that the high temperature from producing the injury to the part.

Preferably, the top of the low pressure chamber has a top plate, and a heat insulator is provided between the top plate of the low pressure chamber and the top wall plate of the tank.

Preferably, a high-voltage chamber is arranged in the box body and positioned at the rear of the transformer chamber, and a containing space for setting a high-voltage cabinet connected with the transformer is arranged in the high-voltage chamber. Thus, the high voltage of the high voltage cabinet is connected with the low voltage cabinet after being processed by the transformer.

Compared with the prior art, the utility model has the advantages that: the front side of the low-pressure chamber inside the box body of the box transformer structure is provided with an opening, the copper bar is arranged in the low-pressure chamber, the front side of the copper bar is provided with a protective cover for covering the copper bar, and when an operator enters the low-pressure chamber through the opening, the protective cover prevents the risk of electric shock caused by touching the copper bar; the cold air blower is arranged on the two door plates of the low-pressure chamber, the cold air blower on the two door plates is communicated through the ventilation opening and the second opening on the low-pressure cabinet to form a flow channel, so that cold air flows of the cold air blower on the left door plate and the right door plate generate convection, and the low-pressure cabinet, the copper bar and the like are effectively cooled.

Drawings

Fig. 1 is a schematic structural view of the present embodiment;

FIG. 2 is a cross-sectional view of a portion of the structure of FIG. 1;

fig. 3 is an enlarged view of a portion a in fig. 2;

FIG. 4 is a schematic view of a portion of the structure of FIG. 1;

FIG. 5 is a cross-sectional view of FIG. 4;

FIG. 6 is an enlarged view of portion B of FIG. 5;

FIG. 7 is a schematic view of the high pressure chamber of FIG. 1;

FIG. 8 is a schematic view of the low pressure chamber of FIG. 1;

fig. 9 is a schematic view of a portion of the structure of fig. 8.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

As shown in fig. 1 to 9, the box transformer structure according to the embodiment of the utility model comprises a box body 1, a low-voltage cabinet 2, a transformer 3, a copper bar set 4, a door panel 5, an air cooler 6 and a heat insulation member 7.

As shown in fig. 2, the inside of the tank 1 is provided with a first vertical partition 11 and a second vertical partition 14 arranged from front to back, and the tank 1 is partitioned by the first vertical partition 11 and the second vertical partition 14 to form a low-pressure chamber 1a, a transformer chamber 1b, and a high-pressure chamber 1c arranged from front to back. As shown in fig. 1, there are two low-voltage cabinets 2, and are arranged in the low-voltage chamber 1a at intervals left and right, and the inside of each low-voltage cabinet 2 is provided with a circuit breaker 8, see in particular fig. 5; the transformer 3 is located in the transformer chamber 1b, and the high voltage chamber 1c has a receiving space for receiving a high voltage cabinet connected to the transformer 3, as shown in fig. 2.

As shown in fig. 7, the rear side of the high-pressure chamber 1c is open, and the rear doors 9 are rotatably disposed at the left and right sides of the rear side opening of the high-pressure chamber 1c, as shown in fig. 7, two heat dissipation fans 91 for dissipating heat of the high-pressure cabinet are mounted on one of the two rear doors 9, and the heat dissipation fans adopt fans in the prior art, which are not described in detail in this embodiment, and the rear door 9 is provided with an air inlet 92 which is communicated with the high-pressure chamber 1c at a position corresponding to the heat dissipation fan, as shown in fig. 2.

As shown in fig. 5 and 6, one low-voltage cabinet 2 is correspondingly provided with a group of copper bar groups 4, two copper bar groups 4 are arranged at intervals left and right and are positioned between the two low-voltage cabinets 2, each copper bar group 4 is partially positioned in the low-voltage chamber 1a, and each copper bar group 4 is provided with 3 copper bars 41 which respectively correspond to a phase a, a phase B and a phase C. Each copper bar 41 comprises a soft connecting part 411 connected with the transformer 3 and a hard connecting part 412 connected with the breaker 8, wherein the soft connecting parts 411 in the two copper bar groups 4 are arranged at left and right intervals, and a first opening 111 for the soft connecting parts 411 of the copper bars 41 to partially pass through is formed in the first vertical partition 11, and the first opening is shown in fig. 4; each low-voltage cabinet 2 is provided with a second opening 21 on the side wall facing the copper bar 41 through which the hard connection portion 412 of the copper bar 41 passes, as shown in particular in fig. 6.

In order to prevent short circuit between the two copper bar groups 4, as shown in fig. 6, a first insulating plate 42 vertically arranged is arranged between the soft connection portions 411 of the two copper bar groups 4, and the existence of the first insulating plate 42 increases the electrical distance between the soft connection portions of the two copper bar groups, so that short circuit between the two copper bar groups is prevented. In order to prevent short circuit between two adjacent copper bars, a second insulating plate 43 arranged vertically is arranged between the soft connection parts 411 of at least two adjacent copper bars 41 in 3 copper bars in each copper bar group 4, and the existence of the second insulating plate 43 increases the electrical distance between the soft connection parts of the two copper bars and prevents short circuit between the two copper bars.

As shown in fig. 1, 8 and 9, the front side of the low pressure chamber 1a is opened 11a, the left and right side edges of the opening 11a are provided with door panels 5 by rotation, and the opening 11a is closed by rotating the two door panels 5 to a butted state. Two air coolers 6 are installed on each door plate 5, and the air coolers adopt fans in the prior art, and detailed description is omitted in this embodiment. As shown in fig. 2, each door panel 5 is provided with a mouth 51 at a position corresponding to the air cooler 6, as shown in fig. 8 and 9, a front wall plate of each low-voltage cabinet 2 is provided with a vent 22 communicated with the corresponding side mouth 51, two mouths 51 are in fluid communication with each other through the vents 22 on the left and right sides and two second openings 21 to form a flow channel, the air cooler 6 is positioned in the flow channel, and accordingly, cold air of the air coolers on the left and right sides is convected in the flow channel, and thus, the low-voltage cabinets, the copper bars and the like are cooled. In addition, the top of the low pressure chamber 1a has a top plate 13, and a heat insulating member 7, which in this embodiment is a heat insulating sponge, is provided between the top plate 13 of the low pressure chamber 1a and the top wall plate 15 of the tank 1, see in particular fig. 3 and 4.

In order to prevent an operator from entering into the low-pressure chamber and touching the copper bar group to generate electric shock, as shown in fig. 1 and 3, a protective cover 12 for covering the copper bar group is arranged at the front side of the copper bar group 4, and a space 16 for accommodating the copper bar 41 is formed between the protective cover 12 and the first vertical partition 11. As shown in fig. 3, the protection cover 12 is U-shaped, and the protection cover 12 includes a front plate 12a, an upper plate 12b connected to the top edge of the front plate 12a, and a lower plate 12c connected to the bottom edge of the front plate, where the left and right sides of the front plate 12a are respectively connected to the low-voltage cabinets 2 on the corresponding sides. As shown in fig. 3 and 8, the front plate 12a includes a connector 121 connected to the low-voltage cabinet 2, as shown in fig. 9, a through hole 1211 is formed in the connector 121, and a cover plate 122 covering or opening the through hole 1211 is disposed on the connector 121 at a position of the through hole 1211, so that when the copper bars in the copper bar group need to be repaired, the copper bars in the copper bar group need to be repaired conveniently only by opening the through hole 1211. For convenience in wiring, the upper plate 12b is provided with a wire accommodating groove 17 for accommodating wires, as shown in fig. 3.

The main points of the present embodiment are that the arrangement manner and the structural connection relationship of the low-voltage cabinet, the high-voltage cabinet, the copper bar, the air cooler, the protection cover, etc. in the box transformer structure are the same as those in the prior art, and the related circuits are not the points of the present embodiment, and will not be described in detail.

In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present utility model, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the utility model may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.

Claims

1. A box transformer structure comprises

A box body (1) is internally provided with a first vertical partition board (11), the box body (1) is divided by the first vertical partition board (11) to form a low-pressure chamber (1 a) and a transformer chamber (1 b) which are arranged from front to back, wherein the front side of the low-pressure chamber (1 a) is provided with an opening (11 a);

a low-voltage cabinet (2) which is positioned in the low-voltage chamber (1 a) and is internally provided with a circuit breaker (8);

a transformer (3) located within the transformer chamber (1 b);

the two ends of the copper bar (41) are respectively connected with the transformer (3) and the circuit breaker (8);

the method is characterized in that: the copper bar (41) is partially positioned in the low-pressure chamber (1 a), a protective cover (12) is arranged on the front side of the copper bar (41), a space (16) for accommodating the copper bar (41) is formed between the protective cover (12) and the first vertical partition plate (11), a first opening (111) for allowing the first end of the copper bar (41) to pass through is formed in the first vertical partition plate (11), the copper bar (41) is positioned between the two low-pressure cabinets (2), and a second opening (21) for allowing the second end of the copper bar (41) to pass through is formed in the side wall, facing the copper bar (41), of each low-pressure cabinet (2);

the left side edge and the right side edge of the opening (11 a) of the low-pressure chamber (1 a) are respectively provided with a door plate (5) in a rotating mode, the door plates (5) are rotated to be in a butt joint state to close the opening (11 a), each door plate (5) is provided with an air cooler (6), each door plate (5) is provided with a mouth part (51) at a position corresponding to the air cooler (6), the front wall plate of each low-pressure cabinet (2) is provided with a vent (22) communicated with the corresponding side mouth part (51), the two mouth parts (51) are in fluid communication through the vent (22) at the left side and the right side and the two second openings (21) to form a flow channel, the air cooler (6) is positioned in the flow channel, and the left side and the right side of the protective cover (12) are respectively contacted with the low-pressure cabinet (2) at the corresponding side and are connected to the low-pressure cabinet (2) at the corresponding side; one low-voltage cabinet (2) corresponds to be equipped with a set of copper bar group (4), all include in every copper bar group (4) copper bar (41), each group copper bar (41) in copper bar group (4) including with soft connecting portion (411) that transformer (3) link to each other and with hard connecting portion (412) that circuit breaker (8) are connected, two soft connecting portion (411) in copper bar group (4) control interval arrangement, two be provided with first insulation board (42) of vertical setting between soft connecting portion (411) of copper bar group (4), every group including 3 copper bars (41) in copper bar group (4), be provided with second insulation board (43) of vertical setting between soft connecting portion (411) of at least two adjacent two of 3 copper bars (41) in copper bar group (4).

2. The box-section structure according to claim 1, characterized in that: the protective cover (12) is U-shaped and comprises a front plate (12 a), an upper plate (12 b) and a lower plate (12 c), wherein the front plate (12 a) comprises a connecting body (121) connected with the low-voltage cabinet (2), a through hole (1211) is formed in the connecting body (121), and a cover plate (122) for covering or opening the through hole (1211) is arranged at the position of the through hole (1211) on the connecting body (121).

3. The box-section structure according to claim 1, characterized in that: the top of the low-pressure chamber (1 a) is provided with a top plate (13), and a heat insulation member (7) is arranged between the top plate (13) of the low-pressure chamber (1 a) and a top wall plate (15) of the box body (1).

4. The box-section structure according to claim 1, characterized in that: the transformer is characterized in that a high-voltage chamber (1 c) is arranged behind the transformer chamber (1 b) in the box body (1), and a containing space for setting a high-voltage cabinet connected with the transformer (3) is arranged in the high-voltage chamber (1 c).