A transformer cabinet with a safety belt interlock

Abstract

The utility model discloses a transformer cabinet body of safety belt electricity interlocking, including skeleton and the plate body of installation on the skeleton, the plate body of skeleton front and back side includes left door and right door, and the skeleton front and back side has left door frame and right door frame, and the outside side of left door and right door is hinged on left door frame and right door frame respectively, and the adjacent side of left door frame and right door frame shares a middle vertical roof beam, and the electricity interlocking lock and the up and down knob type lock are installed on left door or right door, and the first interlocking plate and the second interlocking plate are installed on the middle vertical roof beam, and the first interlocking plate is equipped with the first lock hole of the lock tongue of electricity interlocking lock and is inserted, and the second interlocking plate is equipped with the second lock hole of the lock rod of up and down knob type lock and is inserted, and the door board of left door and right door does not install the lock and folds along the door board edge of installing the lock. The utility model discloses the electricity interlocking lock and up and down knob type lock are opened simultaneously, and the cabinet door can be opened only, and the interlocking is reliable and safe, and the space that can open is bigger, guarantees the maintenance passageway space.

Description

Technical Field

[0001] This utility model relates to a component of low-voltage switchgear in the power industry, and particularly to a transformer cabinet with a safety live interlock. Background Technology

[0002] Low-voltage switchgear is control equipment used in industries such as manufacturing, service sectors, and infrastructure. It is commonly found in high-rise buildings, factory power supply, data centers, subways, and lithium smelting, used for control and protection during power transmission, distribution, and energy conversion. Due to safety concerns, medium- and low-voltage transition transformers in power distribution rooms are increasingly required to be installed in enclosed enclosures to prevent the risk of direct electric shock. Especially in data computing center projects, integrated power module designs incorporate transformer cabinets into the corresponding modules; therefore, the installation of a safety live-line interlock device on the transformer cabinet is particularly important. Utility Model Content

[0003] The purpose of this utility model is to provide a transformer cabinet with a simple structure, convenient maintenance, and reliable safety live interlock.

[0004] The purpose of this utility model is achieved through the following technical measures: a transformer cabinet with a live interlock, comprising a rectangular three-dimensional frame skeleton and plates mounted on the skeleton, characterized in that the plates located on the front and rear sides of the skeleton respectively include a left door and a right door with a split design, the front and rear sides of the skeleton have a left door frame and a right door frame, the outer sides of the left door and the right door are respectively hinged to the left door frame and the right door frame, the adjacent sides of the left door frame and the right door frame share a central vertical beam, a live interlock lock and a top and bottom knob type lock are installed on the left door or the right door, a first interlock plate and a second interlock plate are installed on the central vertical beam, the first interlock plate has a first lock hole for the lock tongue of the live interlock lock to be inserted, the second interlock plate has a second lock hole for the lock rod of the top and bottom knob type lock to be inserted, and the left door and the right door do not have door panel folding edges for installing locks, but door panel pressing edges for installing locks.

[0005] This utility model allows the cabinet door to be opened only when both the live interlocking lock and the top and bottom knob lock are opened simultaneously. The top and bottom knob lock serves as a safer warning for maintenance personnel, ensuring operation even when there is no power. The interlocking is reliable and safe, and the openable space is relatively large, ensuring sufficient space for maintenance.

[0006] In this invention, both the first interlocking plate and the second interlocking plate are bent plates. One end of the first interlocking plate is fixed to the back of the middle vertical beam, and the first lock hole is located on the other end of the first interlocking plate. This end of the plate is located beside the middle vertical beam and perpendicular to the lateral movement direction of the bolt of the electrically operated interlocking lock. One end of the second interlocking plate is fixed to the back of the middle vertical beam, and the second lock hole is located on the other end of the second interlocking plate. This end of the plate is located beside the middle vertical beam and perpendicular to the longitudinal movement direction of the upper and lower knob-type lock rod.

[0007] The first interlocking plate and the electrically powered interlocking lock of this utility model are located in the middle of the door panel, and the second interlocking plate and the upper and lower knob-type lock are two sets located in the upper and lower parts of the door panel respectively.

[0008] The skeleton of this invention is assembled from C-shaped profiles.

[0009] The live interlocking lock described in this utility model is the same as the lock on a medium-voltage switchgear.

[0010] Each plate in this invention is made of environmentally friendly materials.

[0011] Compared with the prior art, the present invention has the following significant advantages:

[0012] (1) This utility model can effectively achieve safe isolation of live parts on the transformer. When the transformer is energized, the outer shell is completely isolated from the physical structure, the lock is tightly closed, and the cabinet door cannot be opened, eliminating the danger of electric shock to personnel and achieving direct electric shock protection. However, when the transformer loses power (upstream medium voltage circuit breaker is tripped), the live interlock lock is opened and locked, and the front and rear doors of the transformer cabinet can be opened to meet the needs of transformer component maintenance and repair.

[0013] (2) This utility model has a simple structure, is easy to manufacture, and has reliable and safe interlocking, making it suitable for mass production.

[0014] (3) The live interlocking lock of this utility model is easy to purchase, is the same as the lock of medium voltage switchgear, and can be interchanged during maintenance.

[0015] (4) The up-and-down knob type lock of this utility model provides a safer warning function for maintenance personnel, ensuring operation when there is no power.

[0016] (5) The outer shell material of this utility model is environmentally friendly, and the internal components and insulation parts comply with the Chinese RoHS directive, which is a green design. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1This is one of the structural schematic diagrams of this utility model (both the right and left doors are closed);

[0019] Figure 2 This is the second structural schematic diagram of this utility model (both the right and left doors are open);

[0020] Figure 3 This is a schematic diagram of the skeleton of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the first interlocking plate of this utility model;

[0022] Figure 5 This is a schematic diagram of the first interlocking plate and the electrically powered interlocking lock of this utility model.

[0023] Figure 6 This is a schematic diagram of the structure of the second interlocking plate of this utility model;

[0024] Figure 7 This is a schematic diagram of the second interlocking plate and the upper and lower knob-type lock of this utility model.

[0025] In the diagram: 1-frame, 2-left door, 3-right door, 4-middle vertical beam, 5-electric interlocking lock, 6-top and bottom knob type lock, 7-first interlocking plate, 8-second interlocking plate, 9-first keyhole, 10-second keyhole. Detailed Implementation

[0026] like Figures 1 to 7As shown, this utility model discloses a transformer cabinet with a live interlock. This cabinet provides outer casing protection for dry-type transformers or other types of transformers. It includes a rectangular three-dimensional frame 1 and various plates mounted on the frame 1. The frame 1 is assembled from C-shaped profiles to ensure the overall structural strength of the cabinet. The plates located on the front and rear sides of the frame 1 respectively include a left door 2 and a right door 3. The front and rear sides of the frame 1 respectively have left and right door frames. The outer sides of the left door 2 and right door 3 are hinged to the left and right door frames respectively. The adjacent sides of the left and right door frames share a central vertical beam 4. In this embodiment, a live interlocking lock 5 (existing technology) and a top-and-bottom rotary lock 6 (existing technology) are installed on the right door 3. A first interlocking plate 7 and a second interlocking plate 8 are installed on the central vertical beam 4. The first interlocking plate 7 is provided with a first lock for the insertion of the bolt of the live interlocking lock 5. Hole 9, the second interlocking plate 8 is provided with a second lock hole 10 for the locking rod of the upper and lower knob-type lock 6 to be inserted, and the left door 2 has a folded edge and the right door has a pressing edge 3, forming a stable outer shell protection, that is, there is a step on the inner edge of the left door 2. When both the left door 2 and the right door 3 are closed, the inner edge of the right door 3 presses on the lower step surface of the left door 2, so that the left door cannot be opened when the right door is not opened. In this way, the right door can only be opened when the live interlocking lock and the upper and lower knob-type lock are opened at the same time. Then the pressing edge of the left door is released and it can also be opened. The openable space is relatively large, which can ensure the space for maintenance passage.

[0027] Both the first interlocking plate 7 and the second interlocking plate 8 are bent plates. The first interlocking plate 7 is a rectangular sheet metal part with three folded edges. One end of the first interlocking plate 7 is fixed to the back of the middle vertical beam 4. The first lock hole 9 is located on the other end of the first interlocking plate 7, and this end is located beside the middle vertical beam 4 and perpendicular to the lateral movement direction (X direction) of the bolt of the live interlocking lock 5. The first lock hole 9 is a square hole that can engage with the bolt of the live interlocking lock 5, ensuring that the live interlocking lock 5 can be locked during operation or... Release; the second interlocking plate 8 is a rectangular sheet metal part with two folded edges. One end of the second interlocking plate 8 is fixed to the back of the middle vertical beam 4. The second lock hole 10 is located on the other end of the second interlocking plate 8, and this end is located beside the middle vertical beam 4 and perpendicular to the longitudinal movement direction (Y direction) of the upper and lower knob-type lock rod 6. The second lock hole 10 is a nut welded to the second interlocking plate 8 and matched with the upper and lower knob-type lock 6, which can ensure that the upper and lower knob-type lock 6 is locked or released after rotation. The first interlocking plate 7 and the electrically powered interlocking lock 5 are located in the middle of the right door 3. The second interlocking plate 8 and the upper and lower knob-type lock 6 are two sets and are located at the upper and lower parts of the right door 3 respectively.

[0028] The live interlocking lock of this utility model is the same as the lock on the medium-voltage switchgear. The live interlocking lock is easy to purchase, is the same as the lock on the medium-voltage switchgear, and can be interchanged during maintenance.

[0029] The plates on the frame of this utility model are made of environmentally friendly materials, and the internal components and insulation parts of the cabinet comply with the Chinese RoHS directive, making it a green design.

[0030] The principle of this utility model's safety locking mechanism is as follows: When the transformer is energized, the latch of the energized interlocking lock will engage in the lock hole of the first interlocking plate, achieving locking. Simultaneously, the up-and-down knob-type lock also needs to be manually locked. At this time, the transformer casing can achieve complete safety protection at the required level, preventing contact with live parts on the transformer. The energized interlocking lock also has a corresponding energized warning light. When the transformer is de-energized for maintenance, the energized interlocking lock is powered independently, and the indicator light shows that operation is possible. The locking mechanism fails, and the latch of the energized interlocking lock can be moved and shortened, failing to engage with the first interlocking plate. At this time, maintenance personnel need to reconfirm the reliability of the de-energization (because the up-and-down knob-type lock provides a safer warning to maintenance personnel, ensuring operation is possible when there is no power). By rotating the up-and-down knob-type lock to unlock, the right door can be opened for maintenance and repair work.

[0031] The embodiments of this utility model are not limited thereto. Based on the above content of this utility model, and in accordance with the common technical knowledge and conventional means in the field, without departing from the basic technical idea of ​​this utility model, this utility model can also be modified, replaced or changed in various other forms, all of which fall within the scope of protection of this utility model.

Claims

1. A transformer cabinet with a safety live interlock, comprising a rectangular three-dimensional frame skeleton and various plates mounted on the skeleton, characterized in that: The panels located on the front and rear sides of the frame respectively include a left door and a right door with double openings. The front and rear sides of the frame have left and right door frames, respectively. The outer edges of the left and right doors are hinged to the left and right door frames. Adjacent sides of the left and right door frames share a central vertical beam. An electrically interlocking lock and a rotary lock are installed on the left or right door. A first interlocking plate and a second interlocking plate are installed on the central vertical beam. The first interlocking plate has a first lock hole for inserting the bolt of the electrically interlocking lock, and the second interlocking plate has a second lock hole for inserting the locking rod of the rotary lock. The left and right doors do not have... The door panel has a folded edge for installing locks, and a pressed edge for installing locks; both the first interlocking plate and the second interlocking plate are bent plates. One end of the first interlocking plate is fixed to the back of the middle vertical beam, and the first lock hole is located on the other end of the first interlocking plate. This end of the plate is located beside the middle vertical beam and perpendicular to the lateral movement direction of the bolt of the electrically operated interlocking lock. One end of the second interlocking plate is fixed to the back of the middle vertical beam, and the second lock hole is located on the other end of the second interlocking plate. This end of the plate is located beside the middle vertical beam and perpendicular to the longitudinal movement direction of the upper and lower knob-type lock rod.

2. The transformer cabinet with safety live interlock as described in claim 1, characterized in that: The first interlocking plate and the electrically powered interlocking lock are located in the middle of the door panel, and the second interlocking plate and the upper and lower knob-type locks are two sets located at the upper and lower parts of the door panel, respectively.

3. The transformer cabinet with safety live interlock as described in claim 2, characterized in that: The frame is assembled from C-shaped profiles.

4. The transformer cabinet with safety live interlock as described in claim 3, characterized in that: The live interlocking device is the same as the lock on the medium-voltage switchgear.

5. The transformer cabinet with safety live interlock as described in claim 4, characterized in that: Each panel is made of environmentally friendly materials.

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