A circuit breaker housing that is easy to install

Abstract

The utility model relates to circuit breaker technical field discloses a kind of circuit breaker housings of convenient installation, including upper shell and lower shell, the upper shell and lower shell are half barrel, the upper shell and lower shell can be spliced into complete cylindrical barrel, two side edges of the upper shell are all provided with connecting end one, two side edges of the lower shell are all provided with connecting end two, connecting end one is provided with the slot one, connecting end two is provided with the slot two, when connecting end one and connecting end two are spliced, slot one and slot two are spliced, the slot one and slot two are jointly clamped with the insertion rod, the device solves the problem of the area of connecting portion increasing affecting sealing effect, while maintaining sealing effect, simplifying installation.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and more specifically, to a circuit breaker housing that is easy to install. Background Technology

[0002] A high-voltage circuit breaker is a sealed switchgear that uses SF6 gas as both the insulating and arc-extinguishing medium. It is widely used in high-voltage, ultra-high-voltage, and extra-high-voltage power systems. The primary function of its casing is to protect the equipment from external environmental interference and damage, while maintaining the internal high-voltage insulating gas seal. Installation requires sequentially installing the equipment into the casing, a cumbersome and complex process.

[0003] Chinese utility model patent application number 202421253655.5 discloses a GIS housing with an integral unfoldable installation structure. The housing is divided into upper and lower parts and connected by bolts, which facilitates the installation and maintenance of internal equipment. However, it increases the overall connection area of ​​the circuit breaker, which may affect the sealing and increase the risk of leakage. In addition, the number of bolts is large, making the installation cumbersome. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a circuit breaker housing that ensures sealing effect while being easy to install.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A circuit breaker housing that is easy to install includes an upper shell and a lower shell, both of which are semi-cylindrical and can be spliced ​​together to form a complete cylindrical tube. The upper shell has a connecting end 1 on each of its two sides, and the lower shell has a corresponding connecting end 2 on each of its two sides. The connecting end 1 has a slot 1, and the connecting end 2 has a corresponding slot 2. When the connecting end 1 and connecting end 2 are spliced ​​together, the slot 1 and slot 2 engage, and a plug rod is engaged within both slot 1 and slot 2.

[0007] The present invention is further configured such that: the cross-section of the insertion rod is a polygonal chain composed of three circles, the symmetry plane of the insertion rod overlaps with the end face of the first connecting end, and the two circles on the outer side of the insertion rod extend into the first connecting end and the second connecting end, respectively.

[0008] The present invention is further configured such that: one end of the insertion rod is provided with an end post, and the other end of the insertion rod is provided with a threaded head, and a washer and a nut are connected to the threaded head, and the two end faces of the washer are respectively pressed and fitted with the nut and the end face of the connecting end.

[0009] The present invention is further configured as follows: a connecting groove 1 is provided on the first connecting end, and a connecting groove 2 is provided on the second connecting end. The first connecting groove is located on the side of the first slot away from the axis and is connected to the first slot. The second connecting groove is located on the side of the second slot facing the axis and is connected to the second slot. A retaining strip 1 is provided on the first connecting end. The retaining strip 1 extends into the second connecting groove. The side of the retaining strip 1 facing the axis abuts against the groove wall of the second connecting groove. The side of the retaining strip 1 away from the axis is in the shape of a "3". The "3" shaped side of the retaining strip 1 is fitted and engaged with the insert rod. A retaining strip 2 is provided on the second connecting end. The retaining strip 2 has the same structure as the retaining strip 1. The retaining strip 2 is fitted and engaged with the insert rod in the first connecting groove.

[0010] The present invention is further configured such that: a mounting groove 1 is provided in the first connecting end, and a corresponding mounting groove 2 is provided in the second connecting end; a sealing strip is installed in both the first and second mounting grooves; the sealing strip is "L" shaped; the sealing strip is wrapped around the side of the first clip that is away from the first connecting end and the insertion rod; and a sealing strip is correspondingly wrapped around the side of the second clip that is away from the second connecting end and the insertion rod.

[0011] The present invention is further configured such that: two sealing strips are inserted into the upper shell and the lower shell, and the two sealing strips are respectively set at the two connection points of the upper shell and the lower shell. The inner side of the sealing strip is spliced ​​with the inner wall of the upper shell and the lower shell to form a complete cylinder. Both sides of the sealing strip are provided with a locking block. The two locking blocks are respectively inserted into the upper shell and the lower shell. The end of the locking block away from the axis extends obliquely towards the connection surface of the upper shell and the lower shell.

[0012] The advantages of this utility model are:

[0013] 1. The two connecting ends of the upper and lower shells are connected by a plug rod. The cross-section of the plug rod is a polygonal chain composed of three circles. The symmetrical plane of the plug rod is flush with the connecting surface of the upper and lower shells. During installation, the upper and lower shells are first joined together, and then the plug rod is pressed into the two connecting grooves. The plug rod is simultaneously engaged with the two connecting ends, thereby connecting the upper and lower shells together, replacing the connection of several bolts, and making the operation convenient.

[0014] 2. Two retaining strips are added. Sealing strips are provided on the side of the retaining strips away from the insert rod and the connecting surface. The two sides of the retaining strips abut against the insert rod and the corresponding connecting end, respectively. After the insert rod is pressed into the connecting groove, the retaining strips are pressed tightly in the connecting groove and the sealing strips are squeezed at the same time, which increases the squeezing force of the connecting end on the insert rod, ensuring the connection strength while improving the sealing effect.

[0015] 3. A sealing strip is installed inside the connection between the upper and lower shells. The sealing strip is inserted into the upper and lower shells by the locking blocks on both sides. The sealing strip covers the seam at the connection between the upper and lower shells, thereby preventing the high-pressure gas inside the shell from acting directly on the seam and improving the sealing effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one embodiment of the present invention;

[0017] Figure 2 For along Figure 1 The cross-sectional view along line AA is shown below;

[0018] Figure 3 For along Figure 1 The BB line cross-section shown;

[0019] Figure 4 for Figure 2 Enlarged view of section C shown;

[0020] Figure 5 for Figure 3 Enlarged view of section D shown;

[0021] In the diagram: 1. Upper shell; 11. Connecting end one; 12. Locking strip one; 13. Locking groove one; 14. Connecting groove one; 15. Mounting groove one; 2. Lower shell; 21. Connecting end two; 22. Locking strip two; 23. Locking groove two; 24. Connecting groove two; 25. Mounting groove two; 3. Insert rod; 31. End post; 32. Threaded head; 4. Sealing strip; 5. Seal strip; 51. Locking block; 6. Gasket; 7. Nut. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art described in this application.

[0024] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0025] Please see Figure 1-5 The present invention provides the following technical solution:

[0026] A circuit breaker housing that is easy to install includes an upper housing 1 and a lower housing 2. Both the upper housing 1 and the lower housing 2 are semi-cylindrical and can be spliced ​​together to form a complete cylindrical tube. The upper housing 1 has a connecting end 11 on each of its two sides, and the lower housing 2 has a connecting end 21 on each of its two sides. The connecting end 11 has a slot 13, and the connecting end 21 has a slot 23. When the connecting end 11 and the connecting end 21 are spliced ​​together, the slot 13 and the slot 23 are spliced ​​together. The slot 13 and the slot 23 together hold a plug rod 3. The cross-section of the plug rod 3 is a polygonal chain composed of three circles. The symmetrical plane of the plug rod 3 overlaps with the end face of the connecting end 11. The two circles on the outer side of the plug rod 3 extend into the connecting end 11 and the connecting end 21, respectively.

[0027] During installation, first assemble the upper shell 1 and the lower shell 2. At this time, the first slot 13 and the second slot 23 form a polygonal chain-shaped combination slot. Press the insertion rod 3 into the combination slot. The insertion rod 3 is simultaneously engaged with the first slot 13 and the second slot 23. That is, the insertion rod 3 engages the two connecting ends together, thereby assembling and fixing the upper shell 1 and the lower shell 2.

[0028] One end of the insertion rod 3 is provided with an end post 31, and the other end of the insertion rod 3 is provided with a threaded head 32. A washer 6 and a nut 7 are connected to the threaded head 32. The two ends of the washer 6 are pressed and fitted against the end face of the nut 7 and the end face of the connecting end 11, respectively. The end post 31 and the washer 6 abut against the two ends of the upper and lower shells, respectively. Tightening the nut 7 can fix the insertion rod 3 on the upper and lower shells, thereby realizing the installation of the shell and making the operation convenient.

[0029] A connecting end 11 has a connecting groove 14, and a connecting end 21 has a connecting groove 24. The connecting groove 14 is located on the side of the slot 13 away from the axis and is connected to the slot 13. The connecting groove 24 is located on the side of the slot 23 facing the axis and is connected to the slot 23. A retaining strip 12 is provided on the connecting end 11. The retaining strip 12 extends into the connecting groove 24. The side of the retaining strip 12 facing the axis abuts against the groove wall of the connecting groove 24. The side of the retaining strip 12 away from the axis is shaped like a "3". The "3" shaped side of the retaining strip 12 fits and engages with the insert rod 3. A retaining strip 22 is provided on the connecting end 21. The retaining strip 22 has the same structure as the retaining strip 12. The retaining strip 22 fits and engages with the insert rod 3 in the connecting groove 14.

[0030] The first locking strip 12 and the second locking strip 22 extend into the opposite connecting end and engage with the insertion rod 3. That is, the extrusion force on the two connecting ends acts on both sides of the insertion rod 3. When the shell expands under the action of the internal high-pressure gas, the connecting end tends to expand outward. At this time, the expansion force acts on the insertion rod 3 through the inner locking strip 12, avoiding the lateral shear force that may be generated when the connecting surface is squeezed, thus ensuring the service life of the insertion rod 3.

[0031] A mounting groove 15 is provided in the first connecting end 11, and a corresponding mounting groove 25 is provided in the second connecting end 21. A sealing strip 4 is installed in both the first mounting groove 15 and the second mounting groove 25. The sealing strip 4 is "L" shaped and is wrapped around the side of the first clamping strip 12 away from the first connecting end 11 and the insert rod 3. The second clamping strip 22 is wrapped around the side of the second clamping strip 22 away from the second connecting end 21 and the insert rod 3. The clamping strips compress the sealing strip 4, thereby achieving a seal on the connecting surface. When the shell is subjected to high pressure and expands, the compressive force on the insert rod 3 increases, which in turn increases the compressive force on the sealing strip 4, improving the sealing effect and maintaining a stable seal between the upper and lower shells.

[0032] Two sealing strips 5 are inserted into both the upper shell 1 and the lower shell 2. The two sealing strips 5 are respectively set at the two connection points of the upper shell 1 and the lower shell 2. The inner side of the sealing strip 5 is spliced ​​with the inner wall of the upper shell 1 and the lower shell 2 to form a complete cylinder. Both sides of the sealing strip 5 are provided with locking blocks 51. The two locking blocks 51 are respectively inserted into the upper shell 1 and the lower shell 2. The end of the locking block 51 away from the axis extends obliquely towards the connection surface of the upper shell 1 and the lower shell 2. After the shell is installed, the sealing strip 5 can be inserted from the side. The two locking blocks 51 lock the sealing strip 5 into the two connection ends, and at the same time, they have a certain pulling force on the two connection ends, which can prevent the upper and lower shells from separating. At the same time, the sealing strip 5 covers the connection point of the upper and lower shells, avoiding the high pressure inside the shell from acting directly on the connection point, relieving the pressure at the connection point, preventing the shell from separating, and improving the sealing effect.

[0033] Specifically, the two connecting ends of the upper shell 1 and the lower shell 2 are connected by a plug rod 3. The cross-section of the plug rod 3 is a polygonal chain composed of three circles. The symmetrical plane of the plug rod 3 is flush with the connecting surface of the upper and lower shells. During installation, the upper and lower shells are first joined together, and then the plug rod 3 is pressed into the two connecting grooves. The plug rod 3 is simultaneously engaged with the two connecting ends, thereby connecting the upper and lower shells together, replacing the connection of several bolts, and making the operation convenient.

[0034] Two additional retaining strips are provided. Sealing strips 4 are provided on the edges of the retaining strips away from the insert rod 3 and the connecting surface. The two sides of the retaining strips abut against the insert rod 3 and the corresponding connecting end, respectively. After the insert rod 3 is pressed into the connecting groove, the retaining strips are pressed tightly in the connecting groove and at the same time, the sealing strips 4 are squeezed, which increases the squeezing force of the connecting end on the insert rod 3, ensuring the connection strength while improving the sealing effect.

[0035] A sealing strip 5 is installed inside the connection between the upper and lower shells. The sealing strip 5 is inserted into the upper and lower shells through the latches 51 on both sides. The sealing strip 5 covers the seam at the connection between the upper and lower shells, thereby preventing the high-pressure gas inside the shell from acting directly on the seam and improving the sealing effect.

[0036] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar counterparts and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0039] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A circuit breaker housing that is easy to install, comprising an upper housing (1) and a lower housing (2), characterized in that: The upper shell (1) and the lower shell (2) are both semi-cylindrical. The upper shell (1) and the lower shell (2) can be spliced ​​together to form a complete cylindrical tube. The upper shell (1) is provided with a connecting end one (11) on both sides, and the lower shell (2) is provided with a connecting end two (21) on both sides. The connecting end one (11) is provided with a slot one (13), and the connecting end two (21) is provided with a slot two (23). When the connecting end one (11) and the connecting end two (21) are spliced ​​together, the slot one (13) and the slot two (23) are spliced ​​together. The slot one (13) and the slot two (23) are both fitted with a plug rod (3).

2. The circuit breaker housing for easy installation according to claim 1, characterized in that: The cross-section of the insert (3) is a polygonal chain composed of three circles. The symmetry plane of the insert (3) overlaps with the end face of the first connecting end (11). The two circles on the outside of the insert (3) extend into the first connecting end (11) and the second connecting end (21) respectively.

3. The circuit breaker housing for easy installation according to claim 2, characterized in that: One end of the insertion rod (3) is provided with an end post (31), and the other end of the insertion rod (3) is provided with a threaded head (32). A washer (6) and a nut (7) are connected to the threaded head (32). The two ends of the washer (6) are pressed and adhered to the end face of the nut (7) and the end face of the connecting end (11), respectively.

4. The circuit breaker housing for easy installation according to claim 3, characterized in that: A connecting groove 1 (14) is provided on the first connecting end (11), and a connecting groove 2 (24) is provided on the second connecting end (21). The first connecting groove (14) is located on the side of the first slot (13) away from the axis and is connected to the first slot (13). The second connecting groove (24) is located on the side of the second slot (23) facing the axis and is connected to the second slot (23). A retaining strip 1 (12) is provided on the first connecting end (11), and the retaining strip 1 (12) extends into the second connecting groove. (24) Inside, the side of the first locking strip (12) facing the axis abuts against the groove wall of the second connecting groove (24). The side of the first locking strip (12) away from the axis is in the shape of a "3". The "3" shaped side of the first locking strip (12) fits and engages with the insert rod (3). The second connecting end (21) is provided with a second locking strip (22). The second locking strip (22) has the same structure as the first locking strip (12). The second locking strip (22) fits and engages with the insert rod (3) in the first connecting groove (14).

5. A circuit breaker housing for easy installation according to claim 4, characterized in that: The first connecting end (11) has an installation groove (15) and the second connecting end (21) has a corresponding installation groove (25). Both the first installation groove (15) and the second installation groove (25) are equipped with sealing strips (4). The sealing strips (4) are "L" shaped. The sealing strips (4) are wrapped around the side of the first locking strip (12) away from the first connecting end (11) and the insertion rod (3). The second locking strip (22) is wrapped with sealing strips (4) on the side away from the second connecting end (21) and the insertion rod (3).

6. A circuit breaker housing for easy installation according to claim 5, characterized in that: Two seals (5) are inserted into the upper shell (1) and the lower shell (2). The two seals (5) are respectively set at the two connection points of the upper shell (1) and the lower shell (2). The inner side of the seal (5) is spliced ​​with the inner wall of the upper shell (1) and the lower shell (2) to form a complete cylinder. Both sides of the seal (5) are provided with a locking block (51). The two locking blocks (51) are respectively inserted into the upper shell (1) and the lower shell (2). The end of the locking block (51) away from the axis extends obliquely towards the connection surface of the upper shell (1) and the lower shell (2).

Images