Switch cabinet cable chamber door plate with anti-arcing window

Abstract

The utility model discloses a switch cabinet cable chamber door plate with an anti-arcing window, which comprises a lower door assembly, a baffle plate module, a reinforced window module and a protective lining plate, the lower door assembly comprises a lower door main body, the protective lining plate is arranged on the inner side of the lower door main body, and the baffle plate module is arranged on the lower door main body. The protective lining plate is provided with an observation window communicated with the reinforced window module, the baffle module is used for opening or closing the observation window, and the reinforced window module and the baffle module are adjacent and are arranged on the front face and the inner side of the lower door body respectively. High strength of the mechanical structure of the cable chamber door of the high-voltage cabinet is guaranteed, the cabinet door is not easy to deform and convenient to assemble, and the state of equipment in the cabinet can be conveniently and clearly observed. After the utility model is adopted, the barium fluoride glass is not easy to fall off and crack, even if the switch cabinet has an arcing fault, the protection effect required by the national standard and the industry can be realized, and the safety of workers and non-fault switch cabinets is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage electrical complete sets of equipment, and particularly relates to a cable chamber door panel of a switch cabinet with an anti-arc viewing window. Background Art

[0002] When a high-voltage switch cabinet operates normally, it is necessary to monitor or inspect the switch operating components regularly or irregularly to discover potential fault hazards. Among them, the cable accessories in the cable chamber and their installation and connection parts are high-incidence areas of faults during power construction and operation, so it is necessary to detect the cable accessories. During operation, the appearance and temperature of the cable accessories can be detected through the viewing window on the cable chamber door panel, which can provide a strong basis for judging the operating state.

[0003] As an important part of the cabinet body, the cable chamber door panel needs to have the same mechanical strength as the cabinet body and can prevent the arc fault from damaging personnel and other equipment.

[0004] Therefore, the industry usually requires that the cable chamber should be equipped with an observation and temperature measurement window. The observation window meets the requirements of passing the arc burning test, is arranged in the middle, the observation window glass cannot be opened, and the working state of the cable chamber can be observed in any working position. Specifically, the following three requirements should be met.

[0005] a) The observation window should at least reach the specified protection level of the outer shell. The mechanical strength of the observation window should be equivalent to that of the outer shell and can pass the internal arc burning test of the switch cabinet.

[0006] b) The observation window should have sufficient electrical clearance and electrostatic shielding measures to prevent dangerous static charges.

[0007] c) The optical crystal thickness of the observation window ≥ 3 mm, the optical crystal material is BaF2 (barium fluoride), the infrared transmittance is greater than 93%, and the ultraviolet transmittance is greater than 93%. Infrared temperature measurement can be carried out through the observation window.

[0008] The cable chamber of the switch cabinet is protected by closing the high-voltage cabinet door panel to prevent unauthorized entry into the live compartment; at the same time, when an arc burning fault occurs in the switch cabinet body, the door panel can block the impact of the arc burning to prevent damage to personnel and other equipment.

[0009] Currently, the common treatment methods in the prior art are as follows:

[0010] 1. Fixed and strengthened type: A grid-shaped viewing window is set on the cable chamber door panel, and tempered glass with a maximum thickness of 14 mm and a shielding interlayer is fixedly installed inside the door panel. This method has a high cost, the shape of the glass needs to be customized, and the size is not conducive to later processing and change; after fixed installation, the infrared transmittance is not high, and the temperature measurement effect through the glass directly is not ideal.

[0011] 2. Window-opening type: Install a glass window on the cable chamber door panel, and the window can be opened. In this way, there is no shielding measure, and the protection requirements are not as high as those of the housing, and the requirement of measuring temperature through the glass cannot be achieved.

[0012] 3. Open a window on the cable chamber door panel and install barium fluoride glass that meets the requirements. Although this type has a high infrared transmittance, the strength of the glass is relatively low, and it cannot meet the requirements for arc protection inside the switchgear cabinet. If the barium fluoride glass is thickened and strengthened, the cost will be greatly increased.

[0013] 4. Install a strengthened barium fluoride window on the cable chamber door panel, install barium fluoride glass that meets the infrared transmittance requirements, and attach a steel protection plate to the barium fluoride window, which rotates with the outer cover plate of the window to open the window for infrared detection. However, through actual measurement, the steel protection plate cannot completely protect the barium fluoride glass, and still cannot meet the requirements for arc protection inside the switchgear cabinet. Summary of the Utility Model

[0014] The main purpose of the present utility model is to propose a cable chamber door panel of a switchgear cabinet with an anti-arc window, aiming to ensure the high strength of the mechanical structure of the cable chamber door of the high-voltage cabinet, and can conveniently and clearly observe the equipment status inside the cabinet.

[0015] To achieve the above object, the present utility model provides a cable chamber door panel of a switchgear cabinet with an anti-arc window, including: a lower door assembly, a baffle module, a strengthened window module and a protective lining plate. The lower door assembly includes a lower door body. The protective lining plate is arranged on the inner side of the lower door body. An observation window communicating with the strengthened window module is opened on the protective lining plate. The baffle module is used to open or close the observation window. The strengthened window module and the baffle module are adjacent to each other and are respectively arranged on the front and inner sides of the lower door body;

[0016] The strengthened window module includes a window frame, a barium fluoride glass wafer, an inner protection plate and an outer protection plate. The barium fluoride glass wafer is embedded in the window frame. The window frame is embedded and fixed in the lower door body. The inner protection plate is arranged on the inner side of the window frame. The outer protection plate is arranged on the outer side of the window frame and is electrically connected to the window frame during installation. The window frame is electrically connected to the lower door body. Through the rotation of the inner protection plate and the outer protection plate, it is rotationally connected to the window frame and is used to open or close the window frame.

[0017] A further technical solution of the present utility model is that the baffle module includes: a baffle, a baffle pin, a spring, a locking sleeve, a locking nut, a handle screw, a handle nut, and a self-limiting handle; one end of the baffle pin is connected to the baffle, the handle screw passes through the other end of the baffle pin, the self-limiting handle is installed on the other end of the baffle pin through the handle screw and the handle nut, the spring and the baffle pin are arranged in the locking sleeve, the spring is sleeved on the baffle pin, and the locking sleeve is matched with the locking nut to install the baffle module on the lower door body.

[0018] A further technical solution of the present utility model is that the baffle module further includes a handle O-ring, and the handle O-ring is sleeved on the baffle pin.

[0019] A further technical solution of the present utility model is that it further includes a lower edge protection plate, and the lower edge protection plate is arranged at the lower end of the protection lining plate.

[0020] A further technical solution of the present utility model is that the cross section of the lower edge protection plate is Z-shaped.

[0021] A further technical solution of the present utility model is that a window module installation hole is provided on the lower door body, and the enhanced window module is installed on the lower door body through the window module installation hole and realizes electrical conduction.

[0022] A further technical solution of the present utility model is that a baffle module installation hole is provided on the lower door body near the window module installation hole, and the baffle module is installed on the lower door body through the baffle module installation hole.

[0023] A further technical solution of the present utility model is that the lower door assembly further includes a lower door handle horizontally arranged at the upper end of the lower door body.

[0024] The beneficial effects of the cable chamber door panel of the switch cabinet with an anti-arc window of the present utility model are as follows:

[0025] The present utility model ensures the high strength of the mechanical structure of the cable chamber door of the high-voltage cabinet, the cabinet door is not easily deformed, and the assembly is convenient. It can conveniently and clearly observe the equipment status in the cabinet. After adopting the present utility model, the barium fluoride glass is not easily detached or broken. Even if an arc fault occurs in the switch cabinet, it can achieve the protection effect required by national standards and industry requirements, ensuring the safety of the staff and non-faulty switch cabinets.

[0026] 1. The cable chamber door panel of the switch cabinet with an anti-arc window of the present utility model can meet the relevant national standards and the industry requirements of Southern Power Grid and State Grid.

[0027] 2. The present utility model reaches the specified protection level. Together with the baffle module, the enhanced window module has a mechanical strength equivalent to or even exceeding that of the cabinet body and can pass the internal arc combustion test of the switch cabinet.

[0028] 3. The observation window glass in the present utility model can adopt BaF2 (barium fluoride) glass that meets the requirements to achieve relevant monitoring of the cable chamber of the switch cabinet and provide sufficient protection for it. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0030] Figure 1 It is the front view of the preferred embodiment of the cable chamber door panel of the switch cabinet with an arc-proof window of the present utility model;

[0031] Figure 2 It is the left view of the preferred embodiment of the cable chamber door panel of the switch cabinet with an arc-proof window of the present utility model;

[0032] Figure 3 It is the right view of the preferred embodiment of the cable chamber door panel of the switch cabinet with an arc-proof window of the present utility model;

[0033] Figure 4 It is the top view of the preferred embodiment of the cable chamber door panel of the switch cabinet with an arc-proof window of the present utility model;

[0034] Figure 5 It is the rear view of the preferred embodiment of the cable chamber door panel of the switch cabinet with an arc-proof window of the present utility model;

[0035] Figure 6 It is the exploded structure schematic diagram of the preferred embodiment of the cable chamber door panel of the switch cabinet with an arc-proof window of the present utility model;

[0036] Figure 7 It is the structure schematic diagram of the preferred embodiment of the cable chamber door panel of the switch cabinet with an arc-proof window of the present utility model when the baffle module is closed;

[0037] Figure 8 It is the structure schematic diagram of the preferred embodiment of the cable chamber door panel of the switch cabinet with an arc-proof window of the present utility model when the enhanced window module is closed;

[0038] Figure 9It is a schematic structural view of the cable chamber door panel of the switch cabinet with an anti-arc window of the present utility model when the baffle module is opened;

[0039] Figure 10 It is a schematic structural view of another angle of the cable chamber door panel of the switch cabinet with an anti-arc window of the present utility model when the enhanced window module is opened;

[0040] Figure 11 It is a schematic structural view of the lower door assembly;

[0041] Figure 12 It is a front view of the lower door assembly;

[0042] Figure 13 It is a side view of the lower door assembly;

[0043] Figure 14 It is a top view of the lower door assembly;

[0044] Figure 15 It is a schematic overall structural view of the baffle module;

[0045] Figure 16 It is a schematic exploded structural view of the baffle module;

[0046] Figure 17 It is a front view of the baffle module;

[0047] Figure 18 It is when the baffle module is opened Figure 17 A sectional view in the B-B direction;

[0048] Figure 19 It is when the baffle module is closed Figure 17 A sectional view in the B-B direction;

[0049] Figure 20 It is Figure 17 A sectional view in the A-A direction;

[0050] Figure 21 It is a schematic overall structural view of the enhanced window module when it is closed;

[0051] Figure 22 It is a schematic structural view of the enhanced window module when it is opened;

[0052] Figure 23 It is a schematic structural view of another angle of the enhanced window module when it is opened;

[0053] Figure 24 It is a side view of the enhanced window module when it is opened;

[0054] Figure 25 It is a schematic structural view of the protective lining plate;

[0055] Figure 26 It is a schematic structural diagram of the lower edge protection plate.

[0056] Explanation of the reference numerals in the attached drawings:

[0057] Lower door assembly 10: lower door main body 101; lower door handle 102; baffle module mounting hole 103; window module mounting hole 104;

[0058] Baffle module 20: baffle 201; spring 202; locking sleeve 203; locking nut 204; handle screw 205; handle nut 206; self-limiting handle 207; handle O-ring 208;

[0059] Reinforced window module 30: window frame 301; barium fluoride glass wafer 302; inner protection plate 303; outer protection plate 304;

[0060] Protection lining 40;

[0061] Lower edge protection plate 50.

[0062] The realization, functional features and advantages of the purpose of the present utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings. Specific embodiments

[0063] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0064] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present utility model, then the directional indications are only used to explain the relative position relationship and movement conditions between the components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, then the directional indications will also change accordingly.

[0065] In addition, if the embodiments of the present utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or is unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0066] Please refer to Figures 1 to 26 , the present utility model provides a cable chamber door panel of a switch cabinet with an anti-arc window. The preferred embodiment of the cable chamber door panel of the switch cabinet with an anti-arc window of the present utility model includes a lower door assembly 10, a baffle module 20, a reinforced window module 30, and a protective lining 40.

[0067] The lower door assembly 10 includes a lower door body 101, and the lower door body 101 is a carrier for other accessories, and other components are all installed on the lower door body 101.

[0068] The protective lining 40 is arranged on the inner side of the lower door body 101. An observation window communicating with the reinforced window module 30 is opened on the protective lining 40. The baffle module 20 is used to open or close the observation window. The reinforced window module 30 and the baffle module 20 are adjacent to each other and are respectively arranged on the front and inner sides of the lower door body 101;

[0069] The reinforced window module 30 includes a window frame 301, a barium fluoride glass wafer 302, an inner protective plate 303, and an outer protective plate 304. The barium fluoride glass wafer 302 is embedded in the window frame 301. The window frame 301 is embedded and fixed in the lower door body 101. The inner protective plate 303 is arranged on the inner side of the window frame 301. The outer protective plate 304 is arranged on the outer side of the window frame 301. The inner protective plate 303 and the outer protective plate 304 are respectively arranged on the inner and outer sides of the window frame 301 and are electrically connected to the window frame 301 during installation, and the window frame 301 is electrically connected to the lower door body. The inner protective plate 303 and the outer protective plate 304 are rotatably connected to the window frame 301 for opening or closing the window frame.

[0070] In this embodiment, a transparent barium fluoride glass is provided inside the enhanced window module 30. Protected by both the baffle module 20 and the enhanced window, after the baffle module 20 and the enhanced window module 30 are opened, relevant monitoring of the cable chamber of the switch cabinet can be realized. Among them, the baffle module 20 protects the entire enhanced window module 30 and can block the impact of arc-fault under the rated parameters of the switch cabinet.

[0071] On the basis of realizing the functions of a conventional door panel, this embodiment truly achieves the same arc-proof strength as the cabinet body at a relatively low cost, without additionally increasing the external dimensions of the cabinet body and the construction space.

[0072] Further, in this embodiment, the baffle module 20 includes: a baffle 201, a baffle pin, a spring 202, a locking sleeve 203, a locking nut 204, a handle screw 205, a handle nut, and a self-limiting handle 207; one end of the baffle pin is connected to the baffle 201, the handle screw 205 passes through the other end of the baffle pin, and the self-limiting handle 207 is installed on the other end of the baffle pin through the handle screw 205 and the handle nut. The spring 202 and the baffle pin are arranged inside the locking sleeve 203, the spring 202 is sleeved on the baffle pin, and the locking sleeve 203 is matched with the locking nut to install the baffle module 20 on the lower door body 101.

[0073] It should be noted that in this embodiment, the self-limiting handle 207 is used to operate the entire baffle module 20. For example, Figure 8 the state of the self-limiting handle 20 shown is the state when the baffle module 20 is closed. Figure 10 the state of the self-limiting handle 20 shown is the state when the baffle module 20 is opened.

[0074] As an implementation, the baffle module 20 further includes a handle O-ring 208, and the handle O-ring 208 is sleeved on the baffle pin.

[0075] The assembly process of the baffle module 20 is as follows: First, install the locking sleeve 203 on the lower door body 101 and lock it with the locking nut 204; put the baffle pin on the handle O-ring 208 and the spring 202, then install it into the locking sleeve 203, and the baffle pin passes through the locking sleeve 203, exposing the installation hole on the baffle pin. Through this installation hole, use the handle screw 205 to install the self-limiting handle 207 and fix it with the handle nut.

[0076] The baffle 201 of the baffle module 20 itself is an embedded structure. When it is closed, it can be embedded in the protective lining plate 40, and its position cannot be moved anymore, achieving self-locking in all directions and approaching integration with the protective lining plate 40, completely isolating the reinforced window module 30 from the cable chamber where an arc fault may occur. When it is necessary to detect the cable chamber, lift the self-limiting handle 207. At this time, under the action of the spring 202, the baffle 201 bounces towards the cable chamber direction, breaking away from the circumferential direction restriction of the observation window on the protective lining plate 40 on the baffle 201; rotate the self-limiting handle 207, and the baffle 201 follows and rotates away from the observation window. At this time, the reinforced window module 30 can be opened for infrared detection.

[0077] Further, in this embodiment, the cable chamber door panel of the switch cabinet with an anti-arc window further includes a lower edge protection plate 50, and the lower edge protection plate 50 is arranged at the lower end of the protective lining plate 40.

[0078] The lower edge protection plate 50 can improve the overall protection of the lower door body 101, protect the joint between the lower door body 101 and the switch cabinet body, and block the damage generated during an arc fault.

[0079] As an implementation scheme, the cross-section of the lower edge protection plate 50 is Z-shaped.

[0080] Further, in this embodiment, a window module mounting hole 104 is provided on the lower door body 101, and the reinforced window module 30 is mounted on the lower door body 101 through the window module mounting hole 104.

[0081] A baffle module mounting hole 103 is provided on the lower door body 101 near the window module mounting hole 104, and the baffle module 20 is mounted on the lower door body 101 through the baffle module mounting hole 103.

[0082] The lower door assembly 10 further includes a lower door handle 102 horizontally arranged at the upper end of the lower door body 101.

[0083] The beneficial effects of the cable chamber door panel of the switch cabinet with an anti-arc window of the present utility model are as follows:

[0084] The present utility model ensures the high strength of the mechanical structure of the cable chamber door of the high-voltage cabinet, the cabinet door is not easily deformed, and the assembly is convenient. It can conveniently and clearly observe the equipment status in the cabinet. After adopting the present utility model, the barium fluoride glass is not easily detached or broken. Even if an arc fault occurs in the switch cabinet, the protection effect required by national standards and industry requirements can be achieved, ensuring the safety of the staff and non-fault switch cabinets.

[0085] 1. The cable chamber door panel of the switch cabinet with an anti-arc window of the present utility model can meet the relevant national standards and the industry requirements of China Southern Power Grid and State Grid.

[0086] 2. The present utility model meets the specified protection level. The overall mechanical strength of the enhanced window module is equivalent to that of the outer shell, and even exceeds the strength of the cabinet body, and can pass the internal arc test of the switch cabinet.

[0087] 3. The observation window glass in the present utility model can adopt BaF2 (barium fluoride) glass that meets the requirements to realize the relevant monitoring of the cable chamber of the switch cabinet and provide sufficient protection for it.

[0088] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made by using the description and drawings of the present utility model under the concept of the present utility model, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A switch cabinet cable room door panel with an arc-proof window, characterized in that: include: A lower door assembly, a baffle module, a reinforced window module and a protective lining, wherein the lower door assembly comprises a lower door body, the protective lining is arranged on the inner side of the lower door body, an observation window connected to the reinforced window module is opened on the protective lining, the baffle module is used to open or close the observation window, the reinforced window module and the baffle module are adjacent and are respectively arranged on the front and inner side of the lower door body; The reinforced window module includes a window frame, a barium fluoride glass wafer, an inner protective plate and an outer protective plate. The barium fluoride glass wafer is embedded in the window frame, and the window frame is embedded and fixed in the lower door body. The inner protective plate is arranged on the inner side of the window frame, and the outer protective plate is arranged on the outer side of the window frame. When installed, the window frame is electrically connected to the window frame. The window frame is electrically connected to the lower door body, and is rotatably connected to the window frame through the rotation of the inner protective plate and the outer protective plate, so as to open or close the window frame.

2. The switch cabinet cable room door panel with arc-proof window according to claim 1, characterized in that: The baffle module includes: a baffle, a baffle pin, a spring, a locking sleeve, a locking nut, a handle screw, a handle nut and a self-limiting handle; one end of the baffle pin is connected to the baffle, the handle screw passes through the other end of the baffle pin, the self-limiting handle is installed on the other end of the baffle pin through the handle screw and the handle nut, the spring and the baffle pin are arranged in the locking sleeve, the spring is sleeved on the baffle pin, and the locking sleeve cooperates with the locking nut to install the baffle module on the lower door body.

3. The switch cabinet cable room door panel with arc-proof window according to claim 2, characterized in that: The baffle module also includes a handle O-ring, and the handle O-ring is sleeved on the baffle pin.

4. The switch cabinet cable room door panel with arc-proof window according to claim 1, characterized in that: It also includes a lower edge protection plate, which is arranged at the lower end of the protection lining.

5. The switch cabinet cable room door panel with arc-proof window according to claim 4, characterized in that: The cross section of the lower edge protection plate is Z-shaped.

6. The switch cabinet cable room door panel with arc-proof window according to claim 1, characterized in that: The lower door body is provided with a window module mounting hole, and the enhanced window module is mounted on the lower door body through the window module mounting hole.

7. The switch cabinet cable room door panel with arc-proof window according to claim 1, characterized in that: A baffle module mounting hole is arranged on the lower door body near the window module mounting hole, and the baffle module is mounted on the lower door body through the baffle module mounting hole.

8. The switch cabinet cable room door panel with arc-proof window according to claim 1, characterized in that: The lower door assembly also includes a lower door handle which is transversely arranged at the upper end of the lower door body.

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