Safety protection mechanism of central high voltage switchgear

Abstract

The utility model discloses a central high-voltage switch cabinet safety protection mechanism, including a cabinet body, a plurality of partitions are arranged in the cabinet body, and the cabinet body is divided into three chambers by the partitions, and the first safety door, the second safety door and the third safety door are rotatably connected in sequence on the front surfaces of the three chambers from top to bottom, a notch is provided at the lower end of the inner surface of the first safety door, and the length of the notch is less than the width of the first safety door, a telescopic baffle is movably inserted in the notch, and the telescopic baffle is protruding from the bottom of the first safety door, a receiving groove is provided on the upper surface of the third safety door, and a telescopic abutment plate is movably connected in the receiving groove, an upper baffle is provided on the upper surface of the second safety door, and a lower baffle is provided on the lower surface of the second safety door. The present application installs the three safety doors in sequence by stacking, ensuring that the three safety doors cannot be opened and closed independently, and the safety doors must be opened in sequence in the order of stacking, thereby realizing the protection operation to a certain extent.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical cabinets, in particular to a centrally mounted high-voltage switch cabinet safety protection mechanism. Background Art

[0002] When the existing power industry inspects and repairs high-voltage switchgear, since the central-mounted high-voltage switchgear is often in a energized state, it is necessary to open the circuit breaker, transfer the hot standby to the test position, close the grounding knife in sequence according to the safety operation manual, and finally move it from the test position to the inspection and operation trolley for repair and maintenance.

[0003] Chinese patent CN114629035A discloses a centrally mounted high-voltage switch cabinet safety protection device, which can support the chest with a protective pad or rotate arm one to place the pad against the chest, so that the device is always supported and kept away from the high-voltage machine to prevent accidents caused by accidental leakage. The maintenance tools are concentrated on the inner wall of the storage box, and the second arm is rotated with the second latch as the axis to keep the storage box away from the high-voltage machine, thereby alleviating the inconvenience of carrying and the problem of chaotic placement, and avoiding accidental conduction of tools to endanger personal safety. By turning on the boat-shaped switch, the battery and the semiconductor refrigeration plate are energized, and the cooling fins are allowed to contact the bottom of the roof panel to absorb heat from the outer wall of the high-voltage machine on the vehicle, and the heat is transferred to the semiconductor refrigeration plate, and then the heat is dissipated and the cold air is fed back to the outer wall of the high-voltage machine, so that the heat is quickly dissipated, the maintenance progress is accelerated, and the operator is prevented from being scalded.

[0004] It can be seen that the safety protection of the central cabinet in the prior art mostly only considers the problem that the internal components of the cabinet may cause electric shock or high temperature burns to the maintenance personnel. However, in actual use, the cabinet still has the problem of anti-theft and anti-violent destruction. Most of the central cabinets in the prior art have multiple independent cabinet doors, and the cabinet doors are only protected by simple locks. Therefore, the cabinet doors can be easily pried open by violence. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In order to solve the problems existing in the above-mentioned background technology, the utility model adopts the following technical solutions.

[0007] A centrally mounted high-voltage switch cabinet safety protection mechanism comprises a cabinet body, wherein a plurality of partitions are arranged in the cabinet body, and the cabinet body is divided into three chambers by the partitions, and a first safety door, a second safety door and a third safety door are rotatably connected in sequence on the front surfaces of the three chambers from top to bottom, a notch is arranged at the lower end of the inner surface of the first safety door, and the length of the notch is less than the width of the first safety door, a telescopic baffle is movably inserted in the notch, and the telescopic baffle protrudes from the bottom of the first safety door, an accommodating groove is arranged on the upper surface of the third safety door, and a telescopic retaining plate is movably connected in the accommodating groove, an upper retaining plate is arranged on the upper surface of the second safety door, and a lower retaining plate is arranged on the lower surface of the second safety door, the positions of the upper retaining plate and the lower retaining plate are staggered, the telescopic baffle cooperates with the upper retaining plate, and the telescopic retaining plate cooperates with the lower retaining plate.

[0008] Preferably, a first connecting column is symmetrically arranged at the lower end of the inner surface of the first safety door and on both sides of the notch, a first connecting sleeve is movably sleeved on the first connecting column, and one end of the first connecting sleeve is connected to the end of the upper surface of the telescopic baffle, and the height of the first connecting column is greater than the height of the telescopic baffle.

[0009] Preferably, a first spring is also sleeved on the first connecting column, and the bottom of the first spring is pressed on the upper surface of the first connecting sleeve. The upper end of the first connecting column is integrally connected with a column cap, and the diameter of the column cap is larger than the diameter of the first connecting column. A lifting plate is provided at the center of the upper surface of the telescopic baffle.

[0010] Preferably, second connecting columns are provided at both ends of the inner bottom of the accommodating groove, and second connecting sleeves are integrally connected at both ends of the lower surface of the telescopic support plate, the second connecting sleeves are movably sleeved on the second connecting columns, the length of the second connecting columns is less than the depth of the accommodating groove, and a second spring is sleeved on the second connecting column, when the second connecting sleeve is sleeved on the second connecting column, the lower surface of the second connecting sleeve contacts with the upper end of the second spring, and a column cap is also provided at the upper end of the second connecting column.

[0011] Preferably, a connecting piece is provided at the center of the lower surface of the telescopic stop plate, and a pressing tongue is integrally connected to the front surface of the connecting piece. A clearance groove is provided on the inner surface of the third safety door, and the pressing tongue extends to the outside of the accommodating groove through the clearance groove. The opening height of the clearance groove is the same as the depth of the accommodating groove, and the clearance groove is connected to the accommodating groove.

[0012] Preferably, a connecting ear is connected to the lower end of the front surface of the pressing tongue, and screw holes are provided at the center of the connecting ear and the connecting plate, a screw groove is provided on the inner side wall of the accommodating groove, and the screw groove is concentric with the screw hole, a screw rod is threadedly connected to the screw hole, and the end of the screw rod abuts against the screw groove.

[0013] Preferably, the three chambers into which the cabinet is divided by the partition are, from top to bottom, a busbar instrument chamber, a circuit breaker chamber, and a cable chamber.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] (1) The present application installs three safety doors in sequence and stacks them to ensure that the three safety doors cannot be opened and closed independently. The safety doors must be opened in sequence in the order of stacking, thereby complicating the opening and closing of the cabinet doors to a certain extent, so that there is a connection between the cabinet doors, ensuring that a single cabinet door will not be easily opened under the action of force; the optimization of the present device lies in that the safety doors retain the door lock structure in the prior art, and at the same time, the safety doors are stacked on each other. When it is necessary to operate one of the chambers, it is necessary to first open the other safety doors pressing against the safety door, and then open the lock equipped on the safety door before the safety door can be opened.

[0016] (2) In the present application, baffles are provided at both the upper and lower ends of the second safety door, wherein the upper baffle is close to the outer surface of the second safety door, and the lower baffle is close to the inner surface of the second safety door. At the same time, a telescopic baffle is provided on the first safety door, and a telescopic stop plate is provided on the third safety door. When the three safety doors are closed, the telescopic stop plate on the third safety door fits with the lower baffle of the second safety door, and the upper baffle of the second safety door fits with the telescopic baffle of the first safety door, thereby completing the overlapping in sequence. When opening, the third safety door must be unlocked first, and then the second safety door can be opened, and finally the first safety door can be opened, thereby achieving the protective effect.

[0017] (3) In actual operation, when one of the safety doors needs to be opened, the other two safety doors must be closed. Therefore, a telescopic baffle and a telescopic bottom plate are provided in the present application. Both the telescopic baffle and the telescopic bottom plate can be retracted on their respective safety doors, thereby leaving space for the opening and closing of other safety doors without causing conflict. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The three-dimensional structure of the central cabinet Figure 1 .

[0019] Figure 2 The three-dimensional structure of the central cabinet Figure 2 .

[0020] Figure 3 This is the assembly drawing of the telescopic baffle and the first safety door.

[0021] Figure 4 This is the assembly drawing of the telescopic stop plate and the third safety door.

[0022] Figure 5 for Figure 4 Enlarged structural diagram of the telescopic plate fixing mechanism at point A in the middle.

[0023] Figure 6 This is a cross-sectional view of the third safety door.

[0024] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0025] 1. Cabinet; 2. First safety door; 21. Telescopic baffle; 22. First connecting column; 221. First spring; 222. First connecting sleeve; 23. Lifting plate; 3. Second safety door; 31. Upper baffle; 32. Lower baffle; 4. Third safety door; 41. Accommodating groove; 411. Displacement groove; 42. Telescopic abutment plate; 421. Connecting plate; 422. Depressing tongue; 423. Connecting ear; 424. Screw; 425. Second connecting sleeve; 43. Second connecting column; 44. Second spring. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0029] See also Figure 1 and Figure 2 This is a structural diagram of a centrally mounted high-voltage switchgear cabinet of this embodiment, comprising a cabinet body 1. A plurality of partitions are arranged in the cabinet body 1, and the cabinet body 1 is divided into three chambers by the partitions. The three chambers are a busbar instrument chamber, a circuit breaker chamber and a cable chamber from top to bottom. A first safety door 2, a second safety door 3 and a third safety door 4 are rotatably connected to the front surfaces of the three chambers from top to bottom in sequence, thereby completing the sealed safety protection of the busbar instrument chamber, the circuit breaker chamber and the cable chamber.

[0030] See also Figure 2 and Figure 4This is the first safety protection mechanism of the central cabinet of this embodiment. In this embodiment, a notch is provided at the lower end of the inner surface of the first safety door 2, and a telescopic baffle 21 is movably inserted in the notch. The telescopic baffle 21 protrudes from the bottom of the first safety door 2, and an upper baffle 31 is correspondingly provided on the upper surface of the second safety door 3. The telescopic baffle 21 and the upper baffle 31 cooperate with each other. Therefore, when the first safety door 2 and the second safety door 3 are both closed, the upper baffle 31 on the second safety door 3 abuts the telescopic baffle 21, so that the first safety door 2 cannot be opened when the second safety door 3 is closed. Further, for operational safety, after opening the first safety door 2, the second safety door 3 needs to be closed, but at this time the telescopic baffle 21 will abut the upper baffle 31, causing the second safety door 3 to be unable to be closed. Therefore, the telescopic baffle 21 in this embodiment can move vertically at the first safety door 2, and when closing the second safety door 3, the telescopic baffle 21 is moved upward, thereby making room for the upper baffle 31 to pass through, so that the second safety door 3 is not blocked by the first safety door 2 and can be successfully closed;

[0031] See also Figure 3 The enlarged part in the embodiment needs to be provided with a connecting component for the installation of the telescopic baffle 21 and to make the telescopic baffle 21 stable during movement. Therefore, in the present application, the length of the notch is designed to be smaller than the width of the first safety door 2, thereby reserving a certain space, and symmetrically arranged first connecting columns 22 on the lower end of the inner surface of the first safety door 2 and on the reserved space on both sides of the notch, and a first connecting sleeve 222 is movably sleeved on the first connecting column 22, and one end of the first connecting sleeve 222 is connected to the end of the upper surface of the telescopic baffle 21, and the movement direction of the telescopic baffle 21 is constrained by the first connecting sleeve 222, and the movement length of the telescopic baffle 21 is limited by the first connecting column 22. At the same time, in order to ensure that the telescopic baffle 21 can be completely retracted into the first safety door 2, the present application sets the first connecting column 22 The height is designed to be greater than the height of the telescopic baffle 21. Furthermore, in order to enable the telescopic baffle 21 to reset after movement, a first spring 221 is also sleeved on the first connecting column 22 in this embodiment, and the bottom of the first spring 221 is pressed on the upper surface of the first connecting sleeve 222. The rebound force of the first spring 221 acts on the first connecting sleeve 222 so that the telescopic baffle 21 always protrudes from the lower end of the first safety door 2 in the absence of external force. Synchronously, a column cap is integrally connected to the upper end of the first connecting column 22, and the column cap has a diameter greater than the diameter of the first connecting column 22. The column cap is used to form a constraint to prevent the first connecting sleeve 222 and the first spring 221 from being disconnected from the first connecting column 22. A lifting plate 23 is provided at the center of the upper surface of the telescopic baffle 21 to facilitate lifting the telescopic baffle 21.

[0032] See also Figure 4-6The second central cabinet safety protection mechanism of this embodiment is a third safety door 4. An accommodating groove 41 is provided on the upper surface of the third safety door 4. A telescopic push plate 42 is movably connected in the accommodating groove 41. A lower stopper 32 is provided on the lower surface of the second safety door 3. The telescopic push plate 42 cooperates with the lower stopper 32. Therefore, when the second safety door 3 and the third safety door 4 are both closed, the telescopic push plate 42 on the third safety door 4 abuts against the lower stopper 32, so that the second safety door 3 cannot be opened when the third safety door 4 is closed. Further, for operational safety, after opening the second safety door 3, the third safety door 4 needs to be closed. However, at this time, the lower stopper 32 will abut against the telescopic push plate 42, causing the third safety door 4 to be unable to be closed. Therefore, the telescopic push plate 42 in this embodiment can move vertically in the accommodating groove 41. When closing the third safety door 4, the telescopic push plate 42 is pressed downward, so that the third safety door 4 can pass smoothly, so that the third safety door 4 is not blocked by the second safety door 3 and can be closed smoothly.

[0033] See also Figure 4 , this embodiment needs to provide a connecting component for the installation of the telescopic push plate 42 and to keep the telescopic push plate 42 stable during movement. Second connecting columns 43 are provided at both ends of the inner bottom of the accommodating groove 41, and second connecting sleeves 425 are integrally connected at both ends of the lower surface of the telescopic push plate 42. The second connecting sleeve 425 is movably sleeved on the second connecting column 43, and the movement direction of the telescopic push plate 42 is constrained by the second connecting sleeve 425. The movement length of the telescopic baffle 21 is limited by the second connecting column 43. At the same time, in order to ensure that the telescopic push plate 42 can be completely retracted into the accommodating groove 41, the application designs the length of the second connecting column 43 to be less than the depth of the accommodating groove 41, so as to prevent the second connecting column 43 from protruding from the accommodating groove 41, so that when the third safety door 4 is closed, the second connecting column 43 contacts the lower baffle 32.

[0034] Furthermore, in order to enable the telescopic push plate 42 to reset after movement, in this embodiment, a second spring 44 is sleeved on the second connecting column 43. When the second connecting sleeve 425 is sleeved on the second connecting column 43, the lower surface of the second connecting sleeve 425 contacts the upper end of the second spring 44, and the rebound force of the second spring 44 acts on the second connecting sleeve 425, so that in the initial state, the telescopic push plate 42 protrudes from the accommodating groove 41. The upper end of the second connecting column 43 is also provided with a column cap to prevent the second connecting sleeve 425 and the second spring 44 from being disconnected from the second connecting column 43. A connecting piece 421 is provided at the center of the surface, and a pressing tongue 422 is integrally connected to the front surface of the connecting piece 421. A clearance groove 411 is provided on the inner surface of the third safety door 4, and the pressing tongue 422 extends to the outside of the receiving groove 41 through the clearance groove 411. The opening height of the clearance groove 411 is the same as the depth of the receiving groove 41, and the clearance groove 411 is connected to the receiving groove 41; by controlling the pressing tongue 422 to move toward the lower end of the clearance groove 411, the pressing tongue 422 is used to drive the connecting piece 421 to move synchronously, and the connecting piece 421 is integrally connected with the telescopic support plate 42, so that the telescopic support plate 42 is retracted into the receiving groove 41;

[0035] See also Figure 5 The structure diagram of the locking mechanism in this embodiment is as follows. When the second safety door 3 and the third safety door 4 are closed, since the telescopic plate 42 is on the outer surface of the lower baffle 32, the telescopic plate 42 can be retracted into the receiving groove 41 by applying force downward by adsorbing the telescopic plate 42 with a tool, which can easily cause violent damage. Therefore, the present application has a connecting ear 423 connected to the lower end of the front surface of the pressing tongue 422, and screw holes are provided at the center of the connecting ear 423 and the connecting plate 421, and a screw hole is provided on the inner wall of the receiving groove 41. The screw groove is concentric with the screw hole, a screw rod 424 is connected to the inner thread of the screw hole, and the end of the screw rod 424 abuts against the screw groove. The screw rod 424 is rotated to insert the screw rod 424 into the screw groove, so that the screw rod 424 forms a resistance against the telescopic abutment plate 42, so that the telescopic abutment plate 42 cannot enter the accommodating groove 41 under the action of external force. The screw rod 424 only needs to be rotated counterclockwise to disengage the screw rod 424 from the screw groove, and the telescopic abutment plate 42 moves into the accommodating groove 41 driven by the pressing tongue 422.

[0036] It should be noted that in order to achieve the sequential superposition of the first safety door 2 , the second safety door 3 and the third safety door 4 to form a protective mechanism, the positions of the upper baffle 31 and the lower baffle 32 in this embodiment are staggered.

[0037] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A centrally mounted high-voltage switch cabinet safety protection mechanism, comprising a cabinet body (1), wherein a plurality of partitions are arranged in the cabinet body (1), and the cabinet body (1) is divided into three chambers by the partitions, and a first safety door (2), a second safety door (3) and a third safety door (4) are rotatably connected in sequence on the front surfaces of the three chambers from top to bottom, Features: The first safety door (2) has a notch at the lower end of its inner surface, and the length of the notch is smaller than the width of the first safety door (2). A telescopic baffle (21) is movably inserted in the notch, and the telescopic baffle (21) protrudes from the bottom of the first safety door (2). The third safety door (4) has a receiving groove (41) on its upper surface, and a telescopic retaining plate (42) is movably connected in the receiving groove (41). The second safety door (3) has an upper baffle (31) on its upper surface, and a lower baffle (32) on its lower surface. The upper baffle (31) and the lower baffle (32) are staggered in position. The telescopic baffle (21) and the upper baffle (31) cooperate with each other, and the telescopic retaining plate (42) and the lower baffle (32) cooperate with each other.

2. The centrally mounted high voltage switch cabinet safety protection mechanism according to claim 1 is characterized in that: A first connecting column (22) is symmetrically arranged at the lower end of the inner surface of the first safety door (2) and located on both sides of the notch, a first connecting sleeve (222) is movably sleeved on the first connecting column (22), and one end of the first connecting sleeve (222) is connected to the end of the upper surface of the telescopic baffle (21), and the height of the first connecting column (22) is greater than the height of the telescopic baffle (21).

3. The centrally mounted high voltage switch cabinet safety protection mechanism according to claim 2 is characterized in that: A first spring (221) is also sleeved on the first connecting column (22), and the bottom of the first spring (221) is pressed against the upper surface of the first connecting sleeve (222). A column cap is integrally connected to the upper end of the first connecting column (22), and the diameter of the column cap is larger than the diameter of the first connecting column (22). A lifting plate (23) is provided at the center of the upper surface of the telescopic baffle (21).

4. The centrally mounted high voltage switch cabinet safety protection mechanism according to claim 1 is characterized in that: Second connecting columns (43) are provided at both ends of the inner bottom of the accommodating groove (41), and second connecting sleeves (425) are integrally connected to both ends of the lower surface of the telescopic support plate (42). The second connecting sleeve (425) is movably sleeved on the second connecting column (43). The length of the second connecting column (43) is less than the depth of the accommodating groove (41), and a second spring (44) is sleeved on the second connecting column (43). When the second connecting sleeve (425) is sleeved on the second connecting column (43), the lower surface of the second connecting sleeve (425) contacts the upper end of the second spring (44), and a column cap is also provided on the upper end of the second connecting column (43).

5. The centrally mounted high voltage switch cabinet safety protection mechanism according to claim 4 is characterized in that: A connecting piece (421) is provided at the center of the lower surface of the telescopic stop plate (42), and a pressing tongue (422) is integrally connected to the front surface of the connecting piece (421). A clearance groove (411) is provided on the inner surface of the third safety door (4), and the pressing tongue (422) extends to the outside of the receiving groove (41) through the clearance groove (411). The opening height of the clearance groove (411) is the same as the depth of the receiving groove (41), and the clearance groove (411) is connected to the receiving groove (41).

6. The centrally mounted high voltage switch cabinet safety protection mechanism according to claim 5 is characterized in that: The lower end of the front surface of the pressing tongue (422) is connected to a connecting ear (423), and the connecting ear (423) and the connecting piece (421) are both provided with screw holes at their centers. The inner wall of the accommodating groove (41) is provided with a screw groove, and the screw groove is concentric with the screw hole. A screw rod (424) is threadedly connected to the screw hole, and the end of the screw rod (424) abuts against the screw groove.

7. The centrally mounted high voltage switch cabinet safety protection mechanism according to claim 6 is characterized in that: The cabinet (1) is divided into three chambers by partitions, which are, from top to bottom, a busbar instrument chamber, a circuit breaker chamber, and a cable chamber.

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