Electrical equipment observation window with high sealing performance

Abstract

The utility model relates to a high-sealing electric power equipment observation window, which comprises a high-sealing electric power equipment observation window, is arranged at an opening in the front surface of an electric power equipment shell, and comprises an outer frame, an inner frame and toughened glass, the outer frame is arranged on the outer side face of an equipment shell, two circles of sealing grooves are formed in the face, close to the shell, of the outer frame at intervals in the circumferential direction, a plurality of threaded holes are formed in the face between the two sealing rings, and a silica gel rope is arranged in each circle of sealing groove. The inner frame is arranged on the inner side face of the equipment shell, and through holes in one-to-one correspondence with the threaded holes are formed in the inner frame; the tempered glass is embedded in the opening, and through holes corresponding to the threaded holes one to one are also formed in the tempered glass; the outer frame, the tempered glass and the inner frame are connected to the equipment shell through screws arranged in the through holes and the threaded holes. According to the utility model, the problem of low sealing performance of a common observation window configured for electrical equipment is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power equipment, in particular to a high-sealing electric power equipment observation window. Background Art

[0002] Observation windows are often installed on the outer shell of power equipment to detect the instruments inside the equipment, thermometer readings, or the status of important components inside. In ordinary occasions, a simple method can meet the requirements, such as opening a square hole on the outer shell of the box, opening holes around it and installing a piece of plexiglass to meet the requirements. However, in some occasions where high protection levels and good appearance requirements are required, the above methods are difficult to meet the requirements. For example, in some areas with high salt fog, high humidity, and large temperature differences, insufficient protection levels can easily cause condensation or dirt infiltration inside the box, and some equipment that requires pressure maintenance, such as isolated phase enclosed busbars, is prone to air leakage. This design is mainly designed to solve the above problems. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a high-sealing electric equipment observation window to solve the problem that the ordinary observation windows configured for electric equipment have low sealing performance.

[0004] The utility model is realized through the following technical solutions:

[0005] Provided is a highly sealed electric equipment observation window, which is installed at the front opening of the electric equipment housing and comprises an outer frame, an inner frame and tempered glass;

[0006] The outer frame is arranged on the outer side of the device housing, and one side of the outer frame close to the housing is provided with two circles of sealing grooves spaced apart along the circumferential direction, and the surface is provided with a plurality of threaded holes between the two sealing rings, and a silicone rope is arranged in each circle of the sealing groove;

[0007] The inner frame is arranged on the inner side of the device housing, and the inner frame is provided with through holes corresponding to the threaded holes one by one;

[0008] The tempered glass is inlaid and installed in the opening, and the tempered glass is also provided with through holes corresponding to the threaded holes one by one;

[0009] The outer frame, the tempered glass and the inner frame are connected to the device housing through the through holes and the screws arranged in the threaded holes.

[0010] Furthermore, vertically staggered transverse ribs and longitudinal ribs are arranged in the inner frame.

[0011] The inner frame is provided with horizontal and vertical ribs staggered vertically to enhance the strength of the inner frame while also maintaining its aesthetics.

[0012] Furthermore, the inner frame is a fixed plate, and the transverse ribs and the longitudinal ribs are formed by cutting hollow through holes in the fixed plate.

[0013] The inner frame is formed by hollowing out the fixed plate, with an integrated structure and high strength.

[0014] Preferably, the fixing plate is a stainless steel plate or a galvanized plate with a thickness of 1 mm.

[0015] The fixing plate is made of stainless steel or galvanized plate, which has the ability of rust and corrosion resistance and prolongs the service life.

[0016] Furthermore, the thickness of the tempered glass is equal to the thickness of the device housing.

[0017] The thickness of the tempered glass is equal to the thickness of the device casing, so it can be well embedded in the casing opening.

[0018] Furthermore, the diameter of the silicone rope is greater than the depth of the sealing groove.

[0019] The diameter of the silicone rope is greater than the depth of the sealing groove, so that after the inner frame and the outer frame are connected, a portion of the silicone rope is squeezed and remains between the outer frame and the device housing to play a sealing role.

[0020] Furthermore, the outer frame and the inner frame are concentric with the front opening of the outer shell, and the area of ​​the outer frame is larger than the area of ​​the inner frame, which is larger than the area of ​​the opening.

[0021] The area of ​​the outer frame is larger than that of the inner frame and larger than that of the opening, which makes it easier to design the positions of the two sealing grooves on the outer frame, so that the threaded hole and the through hole are in a facing position, so that the screws can pass through the inner frame and the tempered glass in turn and be locked by the threaded holes.

[0022] Beneficial effects of the utility model:

[0023] The utility model adopts a split structure, uses screws to tightly match the inner frame, outer frame and tempered glass of the observation window, and uses silicone ropes arranged in two sealing grooves to install and squeeze, which has good sealing performance and can prevent air from penetrating from the inner and outer sides of the outer cover frame through the gap between the outer cover and the tempered glass or the outer shell. The overall strength is high and the appearance is good.

[0024] The utility model is applied to the device casing, and only one opening is required on the casing for installation, and no other through holes or threaded holes are required, which facilitates installation and ensures the sealing of the casing, and there is no need to consider the problem of poor sealing due to too many holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front schematic diagram of the utility model.

[0026] Figure 2 for Figure 1 Top view of the .

[0027] Figure 3It is a front schematic diagram of the inner frame in the utility model.

[0028] Figure 4 for Figure 3 Top view of the .

[0029] Figure 5 for Figure 2 Enlarged view of point A in the middle.

[0030] As shown in the figure:

[0031] 1. Equipment shell, 2. Outer frame, 3. Sealing groove, 4. Threaded hole, 5. Inner frame, 6. Screws, 7. Tempered glass, 8. Through hole, 9. Horizontal ribs, 10. Longitudinal ribs, 11. Silicone rope. DETAILED DESCRIPTION

[0032] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0033] A highly sealed electric equipment observation window is installed at the front opening of the electric equipment housing 1, and comprises an outer frame 2, an inner frame 5 and a tempered glass 7. The outer frame 2 and the inner frame 5 are concentric with the front opening of the housing 1, and the area of ​​the outer frame 2 is larger than that of the inner frame 5, and the area of ​​the opening is larger than that of the inner frame 5.

[0034] The outer frame 2 is arranged on the outer side of the device housing 1. Two circles of sealing grooves 3 are circumferentially spaced apart on one side of the outer frame 2 close to the housing 1, and a plurality of threaded holes 4 are opened between the two sealing rings 3. A silicone rope 11 is arranged in each circle of the sealing groove 3, and the diameter of the silicone rope 11 is greater than the depth of the sealing groove 3.

[0035] The inner frame 5 is arranged on the inner side of the device housing 1, and the inner frame 5 is provided with through holes 8 corresponding to the threaded holes 4 one by one. Figure 1 As shown, a total of 8 through holes 8 and threaded holes 4 are designed.

[0036] The tempered glass 7 is embedded in the opening, and the thickness of the tempered glass 7 is equal to the thickness of the device housing 1. The tempered glass 7 is also provided with through holes 8 corresponding to the threaded holes 4 one by one;

[0037] The outer frame 2 , the tempered glass 7 and the inner frame 5 are connected to the device housing 1 via the through holes 8 and the screws 6 arranged in the threaded holes 4 .

[0038] The inner frame 5 is provided with vertically staggered transverse ribs 9 and longitudinal ribs 10. The inner frame 5 is a fixed plate, and the transverse ribs 9 and longitudinal ribs 10 are formed by cutting hollow through holes in the fixed plate. The fixed plate is a stainless steel plate or a galvanized plate with a thickness of 1 mm. In this embodiment, a 1 mm stainless steel plate is selected.

[0039] In this embodiment, a square hole is opened on the device housing 1, and fixing bolt holes 4 are not required around the square hole. The outer frame 2 is slightly larger than the opening of the outer frame 1, is hollow in the middle, and is a solid frame on the outside. The frame can be made of plastic with good strength. A sealing groove 3 is opened on the inner and outer sides of the frame for installing a silicone rope 11 for sealing. A threaded hole 4 is set between the two grooves for fastening and installing the inner frame 5, the outer frame 2 and the tempered glass 7. The shape of the observation window outer frame 2 can be Figure 1 reflect.

[0040] Figure 2 The inner frame 5 of the observation window can be made of stainless steel with a thickness of 1 mm. When opening a hole in the middle, the inside may not be completely cut, and some lines, namely longitudinal ribs 10 and transverse ribs 9, may be properly left to increase the strength of the frame while also improving the aesthetics after installation. A through hole 8 is opened on the outside of the inner frame 5, and the position of the hole is consistent with the threaded hole 4 of the outer shell.

[0041] A tempered glass 7 is sandwiched between the outer frame 2 and the inner frame 5 of the observation window, and its thickness is consistent with the wall thickness of the outer shell 1 so that the tempered glass 7 can be embedded in the outer shell 1. A plurality of through holes 8 are also opened on the tempered glass 7 at the same position as the outer frame 2 and the inner frame 5. Put the silicone rope 11 in the two sealing grooves 3 of the outer frame 2 respectively, and install the observation window outer frame 2, tempered glass 7, and observation window inner frame 5 in order from the outside to the inside. After all the components are in place, use the slotted screw 6 to penetrate the inner frame 2, tempered glass 7, and observation window outer frame 2 from the inside to the outside. The rubber rope in the sealing groove 3 on the outer frame 2 can play a good sealing effect after being squeezed. The inner and outer layers of silicone rope 11 can prevent air from penetrating from the inside and outside of the outer frame 2 through the gap between the outer frame 2 and the tempered glass 7 or the outer shell 1. After testing, the protection level of the observation window of this structure can reach IP65. For the phase-separated enclosed busbar commonly used in power plants, when it is required to be filled with a micro-positive pressure of 300-2500, its sealing can fully meet the national standard requirement of less than 6%. This kind of observation window can be used as a standardized design, and the observation window shell, inner frame, and tempered organic glass can be mass-processed by specialized manufacturers.

[0042] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A highly sealed electric equipment observation window, installed at the front opening of the electric equipment housing, characterized in that: Including outer frame, inner frame and tempered glass; The outer frame is arranged on the outer side of the device housing, and one side of the outer frame close to the housing is provided with two circles of sealing grooves spaced apart along the circumferential direction, and the surface is provided with a plurality of threaded holes between the two sealing rings, and a silicone rope is arranged in each circle of the sealing groove; The inner frame is arranged on the inner side of the device housing, and the inner frame is provided with through holes corresponding to the threaded holes one by one; The tempered glass is inlaid and installed in the opening, and the tempered glass is also provided with through holes corresponding to the threaded holes one by one; The outer frame, the tempered glass and the inner frame are connected to the device housing through the through holes and the screws arranged in the threaded holes.

2. The high-sealing electric equipment observation window according to claim 1 is characterized by: Vertically staggered horizontal and longitudinal reinforcements are arranged in the inner frame.

3. The high-sealing electric equipment observation window according to claim 2 is characterized in that: The inner frame is a fixed plate, and the transverse ribs and longitudinal ribs are formed by cutting hollow through holes in the fixed plate.

4. The high-sealing electric equipment observation window according to claim 3 is characterized by: The fixing plate is a stainless steel plate or a galvanized plate with a thickness of 1 mm.

5. The high-sealing electric equipment observation window according to claim 1 is characterized by: The thickness of the tempered glass is equal to the thickness of the device casing.

6. The high-sealing electric equipment observation window according to claim 1 is characterized by: The diameter of the silicone rope is greater than the depth of the sealing groove.

7. The high-sealing electric equipment observation window according to claim 1 is characterized by: The outer frame and the inner frame are concentric with the front opening of the outer shell, and the area of ​​the outer frame is larger than the area of ​​the inner frame, and the area of ​​the opening is larger than the area of ​​the outer frame.

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