CN215343454U

CN215343454U - Nuclear power 1E level cubical switchboard switch operation hole protection casing

Info

Publication number: CN215343454U
Application number: CN202121456771.3U
Authority: CN
Inventors: 黄伟; 崔晓科; 丁富帅
Original assignee: Henan Senyuan Electric Co Ltd
Current assignee: Henan Senyuan Electric Co Ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2021-12-28
Anticipated expiration: 2031-06-29

Abstract

The utility model relates to a protective cover for a switch operation hole of a nuclear power 1E-level switch cabinet. The utility model discloses a protective cover for a switch operation hole of a nuclear power 1E-level switch cabinet, which comprises: the base is fixedly connected to the side wall of the switch cabinet; the through hole is arranged on the base and is used for corresponding to the switch cabinet operation hole; the protective door is hinged on the base and seals the through hole when closed; the base and the protective door are respectively and correspondingly provided with more than two lock holes, and the lock holes are used for hanging more than two locks when the protective door is in a closed state. The switch operation hole protective cover for the nuclear power 1E-level switch cabinet is provided with more than two corresponding lock holes on the base and the protective door respectively, and more than two locksets can be hung when the protective door is closed, so that the use requirements of different departments for management and control are met.

Description

Nuclear power 1E level cubical switchboard switch operation hole protection casing

Technical Field

The utility model relates to a protective cover for a switch operation hole of a nuclear power 1E-level switch cabinet.

Background

The nuclear power 1E-level switch cabinet is applied to a nuclear power station and is used for receiving and distributing electric energy to participate in a reactor shutdown function, so that the requirements on the operation safety performance and the operation safety performance of the switch cabinet are high. The earthing switch of cubical switchboard can decide conductive loop intercommunication or ground connection, and earthing switch's operation needs to carry out strict management and control, consequently often installs the protection casing in earthing switch operation hole department on the cubical switchboard, when sealing the protection to earthing switch operation hole department, realizes the locking of operation hole. The new management and control requires that the protection casing is opened by the control of different functional departments, but the current nuclear power 1E level cubical switchboard switch handle hole protection casing can only hang 1 mechanical lock, can't adapt to new demand.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a protective cover for a switch operation hole of a nuclear power 1E-level switch cabinet, which is used for solving the problem that the conventional protective cover for the switch operation hole of the nuclear power 1E-level switch cabinet cannot meet the requirement of multi-department management and control.

The utility model discloses a protective cover for a switch operation hole of a nuclear power 1E-level switch cabinet, which comprises:

the base is fixedly connected to the side wall of the switch cabinet;

the through hole is arranged on the base and is used for corresponding to the switch cabinet operation hole;

the protective door is hinged on the base and seals the through hole when closed;

the base and the protective door are respectively and correspondingly provided with more than two lock holes, and the lock holes are used for hanging more than two locks when the protective door is in a closed state.

The switch operation hole protective cover for the nuclear power 1E-level switch cabinet is provided with more than two corresponding lock holes on the base and the protective door respectively, and more than two locksets can be hung when the protective door is closed, so that the use requirements of different departments for management and control are met.

Further, the base includes PMKD and locates the boss at PMKD middle part, the perforating hole is in the middle part of boss, the guard gate articulates in a side surface of boss, the lockhole on the base is for seting up the boss lockhole of the relative side edge position of boss, the boss lockhole is the L shape hole, and one end drill way is in the boss side, the one end drill way is in the boss in the front relative with the guard gate, the lockhole on the guard gate is the door plant lockhole, the door plant lockhole runs through the door plant on the thickness direction of door plate, when the guard gate is in the closed condition, the door plant lockhole is just to the intercommunication with the boss lockhole. The structure form of this kind of base structure and guard gate for the lockhole is for seting up the pore on base and the solid structure of door plant, and structural strength is high, protects reliably.

Furthermore, the protection door is rectangular, and the lockhole is arranged at intervals on the long edge of the rectangular protection door, so that the processing of the protection door and the base is simplified, and the processing cost is reduced.

In addition, nuclear power 1E level cubical switchboard switch handle hole protection casing still includes locking structure, and locking structure is used for keeping the guard gate in the state of laminating mutually with the base. Therefore, the protective door can be prevented from moving in a certain range relative to the base due to the movable gap between the lockset and the lock hole after the lockset is hung on the protective door, and further sealing is influenced or sealing failure is caused; and can be reliable keep the guard gate inconvenient with the state of laminating mutually with the base through setting up locking structure, be favorable to guaranteeing reliable sealed.

Or according to different arrangement forms, the protective cover for the switch operation hole of the nuclear power 1E-level switch cabinet further comprises a locking structure, and the locking structure is used for keeping the protective door in a state of being attached to the boss.

Furthermore, the locking structure comprises a screw hole arranged on the boss and a locking screw arranged on the protective door, and the locking screw is matched with the screw hole. The locking structure is simple in structure and convenient to process, and reliable locking can be guaranteed through the threaded connecting piece.

Further, the locking screw extends perpendicular to the guard door. Because the guard gate is in parallel state with the lateral wall of cubical switchboard when the closed condition, so set up the locking screw for the outer end of locking screw has great operating space, the operation of being convenient for.

Furthermore, a sunk groove structure is arranged on the boss, and the screw hole is formed in the bottom of the sunk groove. The locking screw can be pre-penetrated on the door plate of the protective door, when the protective door is in a closed state, the end part of the locking screw extends into the sinking groove and just right faces the screw hole, the locking screw is directly screwed to enter the screw hole, and the interference between the locking screw and the base in the process that the protective door overturns towards the base is avoided due to the arrangement of the sinking groove.

In addition, the boss is provided with an annular flange protruding towards the protective door at the hole edge of the through hole, the middle part of the door plate of the protective door is provided with an inwards concave area, when the protective door is in a closed state, the annular flange is positioned in the inwards concave area, and a sealing structure is arranged between the annular flange and the protective door. So better sealing effect is more easily achieved.

Moreover, the concave area of the door panel is provided with a transparent observation window, so that the internal condition of the switch cabinet can be observed conveniently.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of a protective cover for a switch operation hole of a nuclear power 1E-class switch cabinet.

In the figure: 1. fixing the bottom plate; 10. connecting holes; 11. a boss; 12. a boss lock hole; 13. screw holes; 14. an annular flange; 15. a through hole; 2. a door panel; 22. a door panel lock hole; 23. a locking screw; 25. and (4) an observation window.

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 utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. 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 utility model, as claimed, but is merely representative of selected embodiments of the utility model. 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.

The features and properties of the present invention are described in further detail below with reference to examples.

The first specific embodiment of the protective cover for the switch operation hole of the nuclear power 1E-level switch cabinet comprises the following steps:

the protective cover for the switch operation hole of the nuclear power 1E-level switch cabinet comprises a base and a protective door hinged to the base, as shown in fig. 1. The base includes PMKD 1, and PMKD 1 is the rectangle, and its length direction's middle part is equipped with the boss 11 of rectangle, and rectangle PMKD 1 is equipped with connecting hole 10 respectively in the both sides position of boss 11 for fixed connection is on the corresponding lateral wall of cubical switchboard. The middle part of the boss 11 is provided with a through hole 15 which penetrates through the base in the thickness direction, and when the protective cover is fixed on the corresponding side wall of the switch cabinet, the through hole 15 corresponds to the grounding switch operation hole of the switch cabinet, so that a human hand can extend into the through hole to operate the grounding switch of the switch cabinet.

It is the hinged guard door on the base that closes the through hole 15 described above. The protective door comprises a door plate 2, wherein the door plate 2 is rectangular, and the size and the shape of the door plate are matched with the size and the shape of the outer side surface (the outward side surface parallel to the plate surface of the fixed bottom plate 1) of the boss 11. The edge position that the door plant 2 of rectangle is long corresponding at its one side is articulated in the corresponding edge of boss 11, and the edge position that the long limit of opposite side of door plant 2 of rectangle corresponds is equipped with door plant lockhole 22, and is corresponding, is equipped with boss lockhole 12 with door plant lockhole 22 corresponding position department on the boss 11, and, can know directly from the attached drawing, door plant lockhole 22 and boss lockhole 12 all have threely, and interval arrangement on the length direction of rectangle door plant 2. When the protective door is in a closed state, the door panel lock hole 22 is opposite to and communicated with the boss lock hole 12, and three locks can be hung. So, can satisfy the management and control of three parts to the inside earthing switch operation of cubical switchboard.

Specifically, the boss locking hole 12 is an L-shaped hole, one end of the hole is located on the side surface of the boss 11 perpendicular to the surface of the fixing base plate 1, the other end of the hole is located on the front surface of the boss 11 opposite to the protective door, that is, the side surface of the boss 11 parallel to the surface of the fixing base plate 1, the door plate locking hole 22 penetrates through the door plate 2 in the thickness direction of the door plate 2, and when the protective door is in a closed state, the door plate locking hole 22 is communicated with the boss locking hole 12.

Moreover, the boss 11 is provided with an annular flange 14 protruding towards the protective door at the hole edge of the through hole, the middle part of the door plate 2 of the protective door is provided with an inward concave area, and when the protective door is in a closed state, the annular flange 14 is positioned in the inward concave area. Concave-convex cooperation like this, the effect of splash proof that can be better plays. A sealing structure is further arranged between the annular flange 14 and the protective door, the sealing structure can be a sealing ring (not shown in the figure) arranged on the door panel 2, and when the protective door is in a closed state, the annular flange 14 tightly presses the sealing ring, so that sealing between the protective door and the base is ensured.

The protective cover for the switch operation hole of the nuclear power 1E-level switch cabinet further comprises a locking structure, and the locking structure is used for keeping the protective door in a state of being attached to the base. In this embodiment, locking structure is used for keeping the guard gate in the state of laminating mutually with boss 11 substantially, and like this, when the guard gate was in the closed condition, locking structure can be with the reliable keeping in the stationary state of guard gate, and then guarantee the sealed between guard gate and the base.

As shown in fig. 1, the locking structure includes a screw hole 13 disposed on the boss 11 and a locking screw 23 mounted on the guard door, the locking screw 23 is fitted into the screw hole 13, the locking screw 23 extends perpendicular to the guard door, and the screw hole 13 extends perpendicular to the plate surface of the fixing base plate 1. Moreover, the boss 11 is provided with a sinking groove structure, and the screw hole 13 is arranged at the bottom of the sinking groove. Such a structural design provides convenience for the use of the protective cover. When the protective door is used, the locking screw 23 can be pre-penetrated on the door plate 2 of the protective door, the inner end of the locking screw extends out of the plate surface of the door plate 2, when the protective door is rotated to be in a closed state, the locking screw 23 cannot interfere with the boss 11, can smoothly enter the sink groove and is right opposite to the screw hole 13, then the locking screw 23 is screwed to enter the screw hole 13 until the locking screw is screwed, the protective door is tightly attached to the boss 11, and a good sealing effect is achieved. At this time, the door lock hole 22 and the boss lock hole 12 are also in direct communication, and a lock is hung in the corresponding lock hole.

In addition, in this embodiment, in order to facilitate observing the state of the grounding switch in the switch cabinet, a transparent observation window 25 is disposed in the concave region of the door panel 2.

The embodiment of the protective cover for the switch operation hole of the nuclear power 1E-level switch cabinet can meet the requirement of multiple management and control, and is simple and reliable in structure and good in protective sealing effect. Of course, the protective cover for the switch operating hole of the nuclear power 1E-class switch cabinet is not limited to the above-described embodiment, and other various modified embodiments are provided below.

For example in other implementations, different from the embodiment introduced above, the base includes planar structure's PMKD, PMKD's middle part is equipped with the perforating hole, the door plant of guard gate directly articulates the marginal position corresponding to one side long limit in PMKD, and laminate mutually with PMKD's face when closing, the screw hole is located on PMKD, and extend in PMKD thickness direction, PMKD's the marginal position corresponding to the opposite side long limit is equipped with the bottom plate lock ear that the face that perpendicular to PMKD extends, be equipped with two bottom plate lockholes on the bottom plate lock ear, be equipped with the door plant lock ear that perpendicular to door plant extends on the door plant of guard gate correspondingly, be equipped with two door plant lockholes on the door plant lock ear, when guard gate is in the closed condition, bottom plate lock ear and door plant lock ear laminate mutually, and bottom plate lockhole and door plant lockhole correspond.

For example, in other embodiments, different from the above-described embodiments, the protective door is circular, the boss on the fixing base is also circular, the through hole in the middle of the boss and the annular flange provided on the boss are correspondingly circular, and the plurality of lock holes are arranged at intervals along the circumference.

For another example, in another embodiment, different from the above-described embodiment, the locking structure is a magnetic attraction structure disposed on one of the door panel and the boss, for example, a permanent magnet is embedded in an edge of the door panel, a portion of the boss corresponding to a position of the permanent magnet is made of a magnetic material, and the protection door is tightly attracted to a surface of the boss through the permanent magnet when the protection door is in a closed state. Or, in other embodiments, the locking screw is installed at the edge of the door panel along a direction parallel to the door panel, accordingly, the screw hole is disposed on the annular flange, and when the protective door is in the closed state, the locking screw is screwed into the screw hole of the annular flange to lock the position of the protective door.

For another example, in other embodiments, the door panel of the protective door is of a planar structure, the boss is not provided with an annular flange, the door panel of the protective door or the outer side surface of the boss is provided with a sealing ring surrounding the through hole, and the protective door is tightly attached to the outer side surface of the boss in a closed state and is tightly pressed with the sealing ring to realize sealing.

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

1. The utility model provides a nuclear power 1E level cubical switchboard switch handle hole protection casing, characterized by includes:

the base is fixedly connected to the side wall of the switch cabinet;

the through hole (15) is arranged on the base and is used for corresponding to the switch cabinet operation hole;

the protective door is hinged on the base and seals the through hole (15) when closed;

2. The protective cover for the switch operating hole of the nuclear power 1E-level switch cabinet is characterized in that the base comprises a fixed base plate (1) and a boss (11) arranged in the middle of the fixed base plate (1), a through hole (15) is formed in the middle of the boss (11), the protective door is hinged to one side surface of the boss (11), a lock hole in the base is a boss lock hole (12) formed in the edge position of the boss (11) opposite to the side edge position, the boss lock hole (12) is an L-shaped hole, an orifice at one end is formed in the side surface of the boss (11), an orifice at one end is formed in the front surface of the boss (11) opposite to the protective door, a lock hole in the protective door is a door plate lock hole (22), the door plate lock hole (22) penetrates through the door plate (2) in the thickness direction of the door plate (2), and when the protective door is in a closed state, the door plate lock hole (22) is in direct communication with the boss lock hole (12).

3. The protective cover for the switch operating hole of the nuclear power 1E-level switch cabinet according to claim 2, wherein the protective door is rectangular, and the lock holes are arranged on the long edge of the rectangular protective door at intervals.

4. The nuclear power 1E-class switch operating hole protective cover according to claim 1, further comprising a locking structure for maintaining the protective door in a state of being fitted to the base.

5. The protective cover for the switch operating hole of the nuclear power 1E-level switch cabinet as claimed in claim 2 or 3, wherein the protective cover for the switch operating hole of the nuclear power 1E-level switch cabinet further comprises a locking structure for keeping the protective door in a state of being attached to the boss (11).

6. The protective cover for the switch operation hole of the nuclear power 1E-level switch cabinet as claimed in claim 5, wherein the locking structure comprises a screw hole (13) arranged on the boss (11) and a locking screw (23) arranged on the protective door, and the locking screw (23) is matched with the screw hole (13).

7. The protective cover for the switch operating hole of a nuclear power class 1E switchgear cabinet according to claim 6, characterized in that the locking screw (23) extends perpendicularly to the protective door.

8. The protective cover for the switch operation hole of the nuclear power 1E-level switch cabinet as claimed in claim 7, wherein the boss (11) is provided with a sunken groove structure, and the screw hole (13) is arranged at the bottom of the sunken groove.

9. The protective cover for the switch operating hole of the nuclear power 1E-level switch cabinet according to claim 2 or 3, wherein an annular flange (14) protruding towards the protective door is arranged at the hole edge of the through hole on the boss (11), an inward concave area is arranged in the middle of a door plate (2) of the protective door, when the protective door is in a closed state, the annular flange (14) is positioned in the inward concave area, and a sealing structure is arranged between the annular flange (14) and the protective door.

10. The protective cover for the switch operating hole of the nuclear power 1E-level switch cabinet according to claim 9, wherein a transparent observation window (25) is arranged at the concave area of the door panel (2).