CN112928611A - Protection device for switch cabinet and circuit breaker room door - Google Patents
Protection device for switch cabinet and circuit breaker room door Download PDFInfo
- Publication number
- CN112928611A CN112928611A CN202110020039.XA CN202110020039A CN112928611A CN 112928611 A CN112928611 A CN 112928611A CN 202110020039 A CN202110020039 A CN 202110020039A CN 112928611 A CN112928611 A CN 112928611A
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- circuit breaker
- opening
- door
- fixed
- closing
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- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 230000001681 protective effect Effects 0.000 claims description 12
- 239000000428 dust Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 20
- 238000000034 method Methods 0.000 description 9
- 238000007789 sealing Methods 0.000 description 6
- 230000004308 accommodation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
Abstract
The invention relates to a protection device for a switch cabinet and a circuit breaker chamber door. Protection device for circuit breaker room door includes: the fixed disc is of an annular structure and is provided with a central hole, and the central hole corresponds to an emergency opening button or a handcart operation hole on a door of the circuit breaker room; the rotating disc is of an annular structure and is rotatably assembled on the fixed disc, and the rotating disc is provided with an accommodating cavity which faces the door of the circuit breaker chamber; a plurality of opening and closing sheets are arranged along the circumferential direction of the fixed disc, and all the opening and closing sheets are arranged in the accommodating cavity and hinged on the fixed disc so as to synchronously open or close the central hole; the transmission structure is arranged between the rotating disc and the opening and closing sheets, and drives all the opening and closing sheets to synchronously move through the transmission mechanism when the rotating disc rotates relative to the fixed disc; concave-convex limiting structures are arranged between the matching surfaces of the two adjacent opening and closing pieces. Prevent that dust, moisture etc. from getting into the cabinet internally, having guaranteed the insulating properties of cubical switchboard, prevent simultaneously that arcing fault energy from endangering the outer operator of cabinet, satisfy the IAC protection level requirement.
Description
Technical Field
The invention relates to a protection device for a switch cabinet and a circuit breaker chamber door.
Background
As shown in fig. 1 and fig. 2, the breaker chamber of the switch cabinet needs to be provided with an emergency opening button 102 and a handcart operation hole 103 on a breaker chamber door 101 due to functional requirements, if the handcart operation hole 103 and the emergency opening button 102 are not effectively protected, impurities such as dust and liquid easily enter the breaker chamber through a gap between the emergency opening button 102 and the breaker chamber door 101 and the handcart operation hole 103, so that the insulation performance of the switch cabinet is reduced, and the whole service life and performance of a product are affected. Moreover, in the actual use process of the switch cabinet, an arc burning phenomenon may occur due to a fault, and a huge impact force generated by the arc may also be directly leaked to the outside of the switch cabinet through a gap between the emergency opening button 102 and the circuit breaker chamber door 101 and the handcart operation hole 103, which may cause harm to the personal safety of an operator.
The utility model discloses a chinese utility model patent that bulletin number is CN211981345U discloses a protective cover for circuit breaker room door, including the lid main part, joint ear and lid jam plate, the lid main part includes the side seal board of U type spare and U type spare both sides, the joint ear is equipped with two, two joint ears shaping respectively are on two side seal boards, when the installation, the inboard that circuit breaker room door was stretched into through the joint hole to the joint ear on the protective cover, later whereabouts protective cover, make the lid main part shield handcart handle hole or urgent separating brake button, wherein, the lid jam plate is fixed in the lid main part, the cabinet door jam plate on lid jam plate and the circuit breaker room door is in the same place through five-proofing padlock locks, so that the joint ear can't deviate from in the joint hole, thereby realize the protection to handcart handle hole or urgent separating brake button.
When the protective cover for the breaker chamber door is used, the cover main body and the breaker chamber door cannot form good sealing, and damp gas still enters the cabinet body to influence the insulating property of the switch cabinet, and the protective cover is inconvenient to open and close; in addition, the protective cover is box body structure, and is not pleasing to the eye after installing on circuit breaker room door.
Disclosure of Invention
The invention aims to provide a protective device for a breaker room door, which aims to solve the technical problem that a cover main body and a breaker room door cannot form good sealing when a protective cover for the breaker room door in the prior art is used; the invention also aims to provide the switch cabinet.
In order to achieve the purpose, the technical scheme of the protection device for the circuit breaker chamber door is as follows:
protection device for circuit breaker room door includes:
the fixed disc is of an annular structure and is provided with a central hole, and the central hole is arranged corresponding to an emergency opening button or a handcart operation hole on the door of the circuit breaker chamber when the fixed disc is fixed on the door of the circuit breaker chamber;
the rotating disc is of an annular structure and is rotatably assembled on the fixed disc, and the rotating disc is provided with an accommodating cavity which is used for facing the door of the circuit breaker chamber;
a plurality of opening and closing sheets are arranged along the circumferential direction of the fixed disc, and all the opening and closing sheets are arranged in the accommodating cavity and hinged on the fixed disc so as to synchronously open or close the central hole;
the transmission structure is arranged between the rotating disc and the opening and closing sheets, and drives all the opening and closing sheets to synchronously move through the transmission mechanism when the rotating disc rotates relative to the fixed disc;
concave-convex limiting structures are arranged between the matching surfaces of the two adjacent opening and closing pieces.
The beneficial effects are that: the central hole of the fixed disc is synchronously closed through the opening and closing sheets, so that the sealing of a handcart operation hole or an emergency opening button is ensured, dust, dirt, moisture and the like are prevented from entering the cabinet body through the handcart operation hole or a gap between the emergency opening button and a door of a circuit breaker room, the insulating property of the switch cabinet is ensured, an operator outside the cabinet is prevented from being damaged by arcing fault energy, and the IAC protection level requirement is met; in addition, the concave-convex limiting structure between the matching surfaces of the two adjacent opening and closing sheets can ensure the stability between the two adjacent opening and closing sheets, and even if the concave-convex limiting structure is impacted by the energy of electric arcs, the concave-convex limiting structure is not easy to deform, so that the sealing effect of the protection device is ensured.
Furthermore, concave-convex limiting structure includes limiting groove and limiting protrusion, wherein one of two adjacent opening and closing pieces is provided with limiting groove, and the other of two adjacent opening and closing pieces is provided with limiting protrusion.
The beneficial effects are that: the design is not only beneficial to the processing of the opening and closing sheets, but also beneficial to the matching between the two opening and closing sheets.
Furthermore, the limiting protrusions are crescent protrusions.
The beneficial effects are that: by the design, the stability of the matching of the two opening and closing pieces is further ensured.
Furthermore, a guide groove is formed in the outer side face of the opening and closing piece, the transmission structure is a transmission rod, one end of the transmission rod is hinged to the rotating disc, and the other end of the transmission rod penetrates through the guide groove and is hinged to the opening and closing piece.
The beneficial effects are that: the design ensures the stability of the opening and closing sheet in the opening and closing process.
Furthermore, an operation part is arranged on the rotating disk and used for driving the rotating disk to rotate so as to open all the opening and closing pieces, a reset elastic part is arranged between the rotating disk and the fixed disk and used for applying elastic acting force for enabling the rotating disk to restore to an initial position so as to close all the opening and closing pieces.
The beneficial effects are that: after the manual opening, realize self-closing through the elastic component that resets, not only reduced intensity of labour, played the purpose of preventing maloperation moreover.
Furthermore, the elastic reset piece is a reset tension spring.
Further, the operation portion is an operation recess.
The beneficial effects are that: by the design, the attractiveness of the protection device is guaranteed.
Further, be equipped with the double-screw bolt on the fixed disk, the fixed disk passes through the double-screw bolt to be fixed on circuit breaker room door, be equipped with the extension spring that resets between rotary disk and the fixed disk, the extension spring that resets is used for exerting the elastic force that makes it resume to initial position to the rotary disk, and the one end of extension spring that resets is connected on the rotary disk, and the other end of extension spring that resets is connected on the double-screw bolt.
The beneficial effects are that: the reset tension spring can enable the opening and closing sheet of the protection device to be in a closed state under the condition of no operation of a person, so that the purpose of preventing misoperation is achieved; and one end of the reset tension spring is connected to the stud, so that the additional arrangement of parts on the fixed disc is avoided, and the structure is simplified.
Further, be equipped with the fixed disk step that is used for towards the circuit breaker room door on the fixed disk, be equipped with the rotary disk step that is used for the circuit breaker room door dorsad on the rotary disk, when fixed, the fixed disk passes through fixed disk step and rotary disk step cooperation to with the rotary disk pressure equipment on the circuit breaker room door.
The beneficial effects are that: by the design, the rotating disc can be rotatably assembled on the fixed disc, and the rotating disc and the fixed disc can be conveniently assembled on a door of the circuit breaker chamber.
In order to realize the purpose, the technical scheme of the switch cabinet is as follows:
cubical switchboard, including the circuit breaker room, the circuit breaker room has circuit breaker room door, installs protector on the circuit breaker room door, protector includes:
the fixed disc is of an annular structure and is provided with a central hole, and the central hole is arranged corresponding to an emergency opening button or a handcart operation hole on the door of the circuit breaker chamber when the fixed disc is fixed on the door of the circuit breaker chamber;
the rotating disc is of an annular structure and is rotatably assembled on the fixed disc, and the rotating disc is provided with an accommodating cavity which is used for facing the door of the circuit breaker chamber;
a plurality of opening and closing sheets are arranged along the circumferential direction of the fixed disc, and all the opening and closing sheets are arranged in the accommodating cavity and hinged on the fixed disc so as to synchronously open or close the central hole;
the transmission structure is arranged between the rotating disc and the opening and closing sheets, and drives all the opening and closing sheets to synchronously move through the transmission mechanism when the rotating disc rotates relative to the fixed disc;
concave-convex limiting structures are arranged between the matching surfaces of the two adjacent opening and closing pieces.
The beneficial effects are that: the central hole of the fixed disc is synchronously closed through the opening and closing sheets, so that the sealing of a handcart operation hole or an emergency opening button is ensured, dust, dirt, moisture and the like are prevented from entering the cabinet body through the handcart operation hole or a gap between the emergency opening button and a door of a circuit breaker room, the insulating property of the switch cabinet is ensured, an operator outside the cabinet is prevented from being damaged by arcing fault energy, and the IAC protection level requirement is met; in addition, the concave-convex limiting structure between the matching surfaces of the two adjacent opening and closing sheets can ensure the stability between the two adjacent opening and closing sheets, and even if the concave-convex limiting structure is impacted by the energy of electric arcs, the concave-convex limiting structure is not easy to deform, so that the sealing effect of the protection device is ensured.
Furthermore, concave-convex limiting structure includes limiting groove and limiting protrusion, wherein one of two adjacent opening and closing pieces is provided with limiting groove, and the other of two adjacent opening and closing pieces is provided with limiting protrusion.
The beneficial effects are that: the design is not only beneficial to the processing of the opening and closing sheets, but also beneficial to the matching between the two opening and closing sheets.
Furthermore, the limiting protrusions are crescent protrusions.
The beneficial effects are that: by the design, the stability of the matching of the two opening and closing pieces is further ensured.
Furthermore, a guide groove is formed in the outer side face of the opening and closing piece, the transmission structure is a transmission rod, one end of the transmission rod is hinged to the rotating disc, and the other end of the transmission rod penetrates through the guide groove and is hinged to the opening and closing piece.
The beneficial effects are that: the design ensures the stability of the opening and closing sheet in the opening and closing process.
Furthermore, an operation part is arranged on the rotating disk and used for driving the rotating disk to rotate so as to open all the opening and closing pieces, a reset elastic part is arranged between the rotating disk and the fixed disk and used for applying elastic acting force for enabling the rotating disk to restore to an initial position so as to close all the opening and closing pieces.
The beneficial effects are that: after the manual opening, realize self-closing through the elastic component that resets, not only reduced intensity of labour, played the purpose of preventing maloperation moreover.
Furthermore, the elastic reset piece is a reset tension spring.
Further, the operation portion is an operation recess.
The beneficial effects are that: by the design, the attractiveness of the protection device is guaranteed.
Further, be equipped with the double-screw bolt on the fixed disk, the fixed disk passes through the double-screw bolt to be fixed on circuit breaker room door, be equipped with the extension spring that resets between rotary disk and the fixed disk, the extension spring that resets is used for exerting the elastic force that makes it resume to initial position to the rotary disk, and the one end of extension spring that resets is connected on the rotary disk, and the other end of extension spring that resets is connected on the double-screw bolt.
The beneficial effects are that: the reset tension spring can enable the opening and closing sheet of the protection device to be in a closed state under the condition of no operation of a person, so that the purpose of preventing misoperation is achieved; and one end of the reset tension spring is connected to the stud, so that the additional arrangement of parts on the fixed disc is avoided, and the structure is simplified.
Further, be equipped with the fixed disk step that is used for towards the circuit breaker room door on the fixed disk, be equipped with the rotary disk step that is used for the circuit breaker room door dorsad on the rotary disk, when fixed, the fixed disk passes through fixed disk step and rotary disk step cooperation to with the rotary disk pressure equipment on the circuit breaker room door.
The beneficial effects are that: by the design, the rotating disc can be rotatably assembled on the fixed disc, and the rotating disc and the fixed disc can be conveniently assembled on a door of the circuit breaker chamber.
Drawings
FIG. 1 is a schematic diagram of a prior art switchgear;
fig. 2 is a left side view of the breaker chamber door of fig. 1;
fig. 3 is a front view of a circuit breaker chamber door of embodiment 1 of the switchgear of the present invention;
fig. 4 is a schematic structural diagram of the handcart operation hole in fig. 3;
FIG. 5 is a schematic structural view of the closed state of the shielding device in FIG. 3;
FIG. 6 is a rear view of FIG. 5;
FIG. 7 is a schematic view of the shield apparatus of FIG. 3 during opening thereof;
FIG. 8 is a rear view of FIG. 7;
FIG. 9 is a schematic view of the open state of the shielding device of FIG. 3;
FIG. 10 is a rear view of FIG. 9;
FIG. 11 is a schematic structural view of the rotary disk of FIG. 5;
FIG. 12 is a schematic view of the rotary disk of FIG. 11 from another perspective;
FIG. 13 is a schematic view of the structure of the fixing plate in FIG. 5
FIG. 14 is a schematic structural view of the opening/closing sheet of FIG. 5;
FIG. 15 is a schematic view of the opening/closing sheet of FIG. 14 from another perspective;
FIG. 16 is a schematic view of the drive rod of FIG. 5;
in fig. 1 and 2: 101-breaker chamber door; 102-emergency brake-off button; 103-handcart operation hole;
in fig. 3 to 16: 201-breaker chamber door; 202-a guard; 203-handcart operation hole; 204-fixing holes; 11-rotating the disc; 12-fixing the disc; 13-an operating recess; 14-a folding sheet; 15-a reset tension spring; 16-a transmission rod; 17-a containment chamber; 18-a first articulated shaft; 19-a second articulated shaft; 20-a third hinge axis; 21-a stud; 22-ear plate; 23-a central hole; 24-rotating disk steps; 25-a second mounting hole; 26-fixing a disc step; 27-a first mounting hole; 28-a first hanging hole; 29-a second hanging hole; 30-limiting protrusions; 31-a limiting groove; 32-a third hinge hole; 33-a first hinge hole; 34-a guide groove; 35-thick plate section; 36-thin plate segments; 37-a second hinge hole; 38-fourth hinge hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. Furthermore, the terms "upper" and "lower" are based on the orientation and positional relationship shown in the drawings and are only for convenience of description of the present invention, and do not indicate that the referred device or component must have a specific orientation, and thus, should not be construed as limiting the present invention.
The features and properties of the present invention are described in further detail below with reference to examples.
Embodiment 1 of the switchgear of the present invention:
as shown in fig. 3 and 4, the switch cabinet includes a breaker chamber, the breaker chamber has a breaker chamber door 201, the breaker chamber door 201 is provided with a handcart operation hole 203 and an emergency opening button, and protection devices 202 are respectively installed at the handcart operation hole 203 and the emergency opening button; in this embodiment, the protection device 202 is mounted in the cart operation hole 203 of the breaker chamber door 201 as an example.
In this embodiment, a fixing hole 204 is formed around the handcart operation hole 203, and the protection device 202 is fixed to the circuit breaker chamber door 201 through the fixing hole 204.
As shown in fig. 5, 6, 11 and 13, the shielding device includes a fixed disk 12 and a rotating disk 11, and the fixed disk 12 and the rotating disk 11 are both circular ring structures. In this embodiment, the fixed disk 12 has a center hole 23, the stud 21 is welded to one side of the fixed disk 12 facing the door 201 of the circuit breaker chamber, the studs 21 are arranged in a plurality of circumferential intervals along the fixed disk 12, the fixed disk 12 is fixed on the door 201 of the circuit breaker chamber through the studs 21, and at this time, the center hole 23 in the fixed disk 12 corresponds to the handcart operation hole in the door 201 of the circuit breaker chamber.
In this embodiment, the rotary disk 11 is rotatably mounted on the fixed disk 12. Specifically, as shown in fig. 12 and 13, the rotating disk 11 is provided with a rotating disk step 24, and the rotating disk step 24 is disposed opposite to the circuit breaker chamber door 201; a fixed tray step 26 is arranged on the fixed tray 12, the fixed tray step 26 is arranged towards the circuit breaker chamber door 201, and the fixed tray step 26 is matched with the rotating tray step 24; at the time of fixing, the fixed tray 12 is fitted through the fixed tray step 26 and the rotating tray step 24 to press-fit the rotating tray 11 on the circuit breaker chamber door 201.
As shown in fig. 6 and 11, the rotary disk 11 has an accommodation chamber 17, the accommodation chamber 17 being disposed toward the breaker chamber door 201; the accommodating cavity 17 is internally provided with a plurality of opening and closing sheets 14, the plurality of opening and closing sheets 14 are arranged along the circumferential direction of the rotating disc 11, and all the opening and closing sheets 14 are hinged on the fixed disc 12 so as to synchronously open or close the central hole 23.
As shown in fig. 6 and 13, the fixed disk 12 is provided with a first mounting hole 27, and the first hinge shaft 18 is mounted in the first mounting hole 27; as shown in fig. 14 and 15, the opening and closing plate 14 is provided with a first hinge hole 33 and a third hinge hole 32, and the opening and closing plate 14 is hinged on the first hinge shaft 18 through the first hinge hole 33.
In this embodiment, a transmission mechanism is provided between the rotating disc 11 and the opening/closing plates 14, and when the rotating disc 11 rotates relative to the fixed disc 12, all the opening/closing plates 14 are driven to move synchronously by the transmission mechanism.
In this embodiment, the transmission structure is a transmission rod 16, as shown in fig. 16, the transmission rod 16 includes a thick plate section 35 and a thin plate section 36, the thick plate section 35 is provided with a second hinge hole 37, and the thin plate section 36 is provided with a fourth hinge hole 38.
As shown in fig. 6 and 11, the rotating disc 11 is provided with a second mounting hole 25, a second hinge shaft 19 is mounted in the second mounting hole 25, and one end of the transmission rod 16 is hinged on the rotating disc 11 through the second hinge hole 37 and the second hinge shaft 19 in a matching manner; the other end of the transmission rod 16 is hinged on the opening and closing piece 14 through the fourth hinge hole 38 and the third hinge hole 32 in cooperation with the third hinge shaft 20, so that the opening and closing piece 14 is driven to move by the transmission rod 16 when the rotating disc 11 rotates.
As shown in fig. 15, the outer side of the opening and closing plate 14 is provided with a guide slot 34, and the thin plate section 36 of the transmission rod 16 is hinged on the opening and closing plate 14 through the guide slot 34 to ensure stability.
In this embodiment, be equipped with unsmooth limit structure between two adjacent retractable sheets 14 to guarantee the stability after retractable sheet 14 closes. Specifically, as shown in fig. 14, the concave-convex limiting structure includes a limiting groove 31 and a limiting protrusion 30, one of the two adjacent opening and closing pieces 14 is provided with the limiting groove 31, and the other of the two adjacent opening and closing pieces 14 is provided with the limiting protrusion 30; in this embodiment, the same opening and closing sheet 14 is provided with the limiting groove 31 and the limiting protrusion 30, the limiting groove 31 and the limiting protrusion 30 are arranged at intervals along the circumferential direction of the fixed tray 12, wherein the limiting groove 31 on the opening and closing sheet 14 is matched with the limiting protrusion on the adjacent opening and closing sheet 14, and the limiting protrusion 30 on the opening and closing sheet 14 is matched with the limiting groove on the adjacent opening and closing sheet 14. Wherein, the limiting bulge 30 is a crescent bulge.
As shown in fig. 12, the rotary plate 11 is provided with an operation portion, preferably, the operation portion is an operation concave portion 13, three operation concave portions 13 are provided along the circumferential direction of the rotary plate 11, and the operation concave portions 13 are used for driving the rotary plate 11 to rotate so as to open all the opening and closing pieces 14.
As shown in fig. 6, a return tension spring 15 is provided between the rotary disk 11 and the fixed disk 12, wherein the return tension spring 15 constitutes a return elastic member, and the return tension spring 15 is used for applying an elastic force to the rotary disk 11 to return the rotary disk to the initial position, so that all the opening and closing pieces 14 are closed.
As shown in fig. 11 and 13, the rotary disc 11 is provided with an ear plate 22, and the ear plate 22 is provided with a first hanging hole 28; the stud 21 is provided with a second hanging hole 29, one end of the reset tension spring 15 is hooked on the first hanging hole 28, and the other end is hooked on the second hanging hole 29.
When the switch cabinet is in normal operation, as shown in fig. 5 and 6, the protection device 202 is in a closed state; when the hand cart needs to be operated, the operation concave part 13 is driven by hand to drive the rotating disc 11 to rotate, and as shown in fig. 7 and 8, the opening and closing sheet 14 is gradually opened; continuing to drive the rotating disc 11 to rotate, as shown in fig. 9 and 10, until the central hole 23 is completely opened to expose the handcart operation hole, at which time the protection device 202 is in an open state; after the operation is finished, the operation concave part 13 is released, the rotating disc 11 is reset under the action of the reset tension spring 15, and the opening and closing sheet 14 closes the central hole 23 again to seal the handcart operation hole.
The switch cabinet in the embodiment prevents dust, dirt and moisture from entering the handcart operation hole or the emergency opening button and prevents misoperation; in addition, prevent that arcing trouble energy from endangering the outside operator of cabinet, satisfy IAC protection level requirement.
Embodiment 2 of the switchgear of the invention:
the difference between this embodiment and embodiment 1 is that in embodiment 1, the same opening and closing sheet 14 is provided with the limiting grooves 31 and the limiting protrusions 30, and the limiting grooves 31 and the limiting protrusions 30 are arranged at intervals along the circumferential direction of the fixed disk 12, wherein the limiting grooves 31 on the opening and closing sheet 14 are matched with the limiting protrusions on the adjacent opening and closing sheet 14, and the limiting protrusions 30 on the opening and closing sheet 14 are matched with the limiting grooves on the adjacent opening and closing sheet 14. In this embodiment, be equipped with two spacing archs on the same piece that opens and shuts, two spacing archs are arranged along the circumference interval of fixed disk, and two spacing archs on this piece that opens and shuts cooperate with the spacing recess on two adjacent pieces that open and shut respectively. In other embodiments, two limiting grooves are arranged on the same opening and closing sheet, the two limiting grooves are arranged at intervals along the circumferential direction of the fixed disc, and two limiting parts on the opening and closing sheet are respectively matched with the limiting protrusions on two adjacent opening and closing sheets.
Embodiment 3 of the switchgear of the invention:
the present embodiment is different from embodiment 1 in that in embodiment 1, the transmission structure is a transmission rod 16, one end of the transmission rod 16 is hinged on the rotating disc 11, and the other end of the transmission rod 16 is hinged on the opening and closing sheet 14 through a guide slot 34. In this embodiment, the transmission structure includes an arc-shaped guide hole provided on the rotating disk and a guide pin provided on the opening/closing sheet, and the specific structure includes a slide guide groove and a slide guide block disclosed in application publication No. CN 110541956A.
Embodiment 4 of the switchgear of the invention:
the present embodiment is different from embodiment 1 in that in embodiment 1, the rotating disk 11 is provided with an operation concave portion for driving the rotating disk 11 to rotate so as to open all the opening and closing pieces 14. In this embodiment, the handle is arranged on the rotating disk, and the rotating disk is driven to rotate through the handle.
Embodiment 5 of the switchgear of the invention:
the present embodiment is different from embodiment 1 in that in embodiment 1, the fixed disk 12 is provided with a fixed disk step 26, the rotating disk 11 is provided with a rotating disk step 24, and the fixed disk 12 is fitted through the fixed disk step 26 and the rotating disk step 24 to press-fit the rotating disk 11 on the circuit breaker chamber door. In this embodiment, the fixed disk passes through the bearing rotation assembly with the rotary disk and is in the same place, and the fixed disk is fixed on circuit breaker room door.
In the embodiment of the protection device for a door of a circuit breaker chamber according to the present invention, the structure of the protection device for a door of a circuit breaker chamber in the embodiment is the same as that of any one of embodiments 1 to 5 of the switch cabinet, and details are not repeated herein.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. Protection device for circuit breaker room door, its characterized in that includes:
the fixed disc is of an annular structure and is provided with a central hole, and the central hole is arranged corresponding to an emergency opening button or a handcart operation hole on the door of the circuit breaker chamber when the fixed disc is fixed on the door of the circuit breaker chamber;
the rotating disc is of an annular structure and is rotatably assembled on the fixed disc, and the rotating disc is provided with an accommodating cavity which is used for facing the door of the circuit breaker chamber;
a plurality of opening and closing sheets are arranged along the circumferential direction of the fixed disc, and all the opening and closing sheets are arranged in the accommodating cavity and hinged on the fixed disc so as to synchronously open or close the central hole;
the transmission structure is arranged between the rotating disc and the opening and closing sheets, and drives all the opening and closing sheets to synchronously move through the transmission mechanism when the rotating disc rotates relative to the fixed disc;
concave-convex limiting structures are arranged between the matching surfaces of the two adjacent opening and closing pieces.
2. The protective device for the door of the circuit breaker room as claimed in claim 1, wherein the concave-convex limiting structure comprises a limiting groove and a limiting protrusion, one of the two adjacent opening and closing pieces is provided with the limiting groove, and the other of the two adjacent opening and closing pieces is provided with the limiting protrusion.
3. The circuit breaker room door guard of claim 2 wherein said limit projection is a crescent shaped projection.
4. The protection device for the door of the circuit breaker chamber as claimed in claim 1, 2 or 3, wherein a guide groove is formed on an outer side surface of the opening and closing piece, the transmission structure is a transmission rod, one end of the transmission rod is hinged on the rotating disk, and the other end of the transmission rod is hinged on the opening and closing piece through the guide groove.
5. The protection device for the door of the circuit breaker chamber as claimed in claim 1, 2 or 3, wherein the rotary plate is provided with an operation part for driving the rotary plate to rotate so as to open all the opening and closing pieces, and a return elastic member for applying an elastic force to the rotary plate to return the rotary plate to an initial position is provided between the rotary plate and the fixed plate so as to close all the opening and closing pieces.
6. The circuit breaker chamber door guard of claim 5 wherein the return spring is a return extension spring.
7. The circuit breaker compartment door guard of claim 5 wherein the operating portion is an operating recess.
8. The protection device for the circuit breaker chamber door as claimed in claim 1, 2 or 3, wherein the fixed disk is provided with a stud, the fixed disk is fixed on the circuit breaker chamber door through the stud, a reset tension spring is arranged between the rotating disk and the fixed disk, the reset tension spring is used for applying an elastic acting force to the rotating disk to enable the rotating disk to restore to an initial position, one end of the reset tension spring is connected to the rotating disk, and the other end of the reset tension spring is connected to the stud.
9. The protection device for the circuit breaker chamber door as claimed in claim 1, 2 or 3, wherein the fixed disk is provided with a fixed disk step for facing the circuit breaker chamber door, and the rotating disk is provided with a rotating disk step for facing away from the circuit breaker chamber door, and when being fixed, the fixed disk is fitted through the fixed disk step and the rotating disk step to press-fit the rotating disk on the circuit breaker chamber door.
10. Switchgear comprising a circuit breaker chamber with a circuit breaker chamber door on which a protective device is mounted, characterized in that the protective device is a circuit breaker chamber door protective device according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110020039.XA CN112928611A (en) | 2021-01-07 | 2021-01-07 | Protection device for switch cabinet and circuit breaker room door |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110020039.XA CN112928611A (en) | 2021-01-07 | 2021-01-07 | Protection device for switch cabinet and circuit breaker room door |
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| CN112928611A true CN112928611A (en) | 2021-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110020039.XA Pending CN112928611A (en) | 2021-01-07 | 2021-01-07 | Protection device for switch cabinet and circuit breaker room door |
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| CN (1) | CN112928611A (en) |
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