Sealing structure for pole-mounted circuit breaker and pole-mounted circuit breaker

Abstract

The utility model provides a sealing structure for a pole-mounted circuit breaker and the pole-mounted circuit breaker, and relates to the technical field of pole-mounted circuit breaker sealing, the sealing structure for the pole-mounted circuit breaker comprises a mounting square strip and a sealing strip; the mounting square strip is annular and is used for being arranged in a bottom opening of the pole-mounted circuit breaker, and one side, close to the sealing strip, of the mounting square strip sinks inwards to form a groove; and a lug boss matched with the groove is formed on the sealing strip. According to the sealing structure for the pole-mounted circuit breaker, bending or displacement of the sealing strip due to uneven stress can be effectively avoided, the convenience of installation can be effectively improved, and the sealing performance of the pole-mounted circuit breaker after assembly is effectively guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of pole-mounted circuit breaker sealing, and in particular to a sealing structure for a pole-mounted circuit breaker and the pole-mounted circuit breaker. Background Art

[0002] Pole-mounted circuit breakers are primary devices used in high-voltage power systems, primarily in suburban and rural distribution networks. Their primary function is to disconnect or connect lines under normal circumstances. In the event of a short-circuit, they manually or automatically switch the faulty line through operation or relay protection devices, thereby protecting the power grid. Pole-mounted circuit breakers contain secondary circuits within their enclosures, crucial to their proper operation. Since pole-mounted circuit breakers are typically installed outdoors, they are subject to significant influences from wind, snow, and rain, necessitating reliable sealing of their enclosures.

[0003] Currently, to ensure the sealing performance of pole-mounted circuit breakers, mounting bars and sealing strips are generally installed at the bottom of the box to achieve sealing. However, since the sealing strip is generally made of flexible material and is long, it is very easy for the sealing strip to bend or shift due to uneven force during the assembly process of the pole-mounted circuit breaker. This not only causes inconvenience during the installation process, but also leads to poor sealing performance due to poor alignment between the sealing strip and the mounting bar. Utility Model Content

[0004] To address the technical problems in the related art, the present application provides a sealing structure for a pole-mounted circuit breaker and a pole-mounted circuit breaker. The present application's sealing structure for a pole-mounted circuit breaker effectively prevents bending or displacement of the sealing strip due to uneven force, thereby effectively improving installation convenience and ensuring the sealing performance of the pole-mounted circuit breaker after assembly.

[0005] In order to achieve the above objectives, the technical solutions adopted in this application include:

[0006] According to a first aspect of the present application, a sealing structure for a pole-mounted circuit breaker is provided, comprising a mounting square bar and a sealing strip; the mounting square bar is formed in an annular shape and is used to be disposed in a bottom opening of the pole-mounted circuit breaker, and a side of the mounting square bar adjacent to the sealing strip is inwardly recessed to form a groove; the sealing strip is formed with a raised portion that matches the groove.

[0007] Optionally, the installation square bar includes a first part, a second part, a third part and a fourth part connected end to end, and the first part, the second part, the third part and the fourth part are together enclosed to form a ring structure;

[0008] The groove includes a first groove body formed on the first part and a third groove body formed on the third part, and / or the groove includes a second groove body formed on the second part and a fourth groove body formed on the fourth part.

[0009] Optionally, the first slot body, the second slot body, the third slot body and the fourth slot body are connected end to end so that the groove forms an annular structure.

[0010] Optionally, the mounting square strip is formed with a plurality of threaded mounting holes for threaded connection of bolts for mounting the base plate, and the sealing strip is formed with a plurality of mounting through holes corresponding one-to-one to the threaded mounting holes;

[0011] Wherein, in the vertical direction, the projection of the first slot body, the projection of the second slot body, the projection of the third slot body and the projection of the fourth slot body are respectively separated from the projection of the threaded mounting hole.

[0012] Optionally, the first slot body and the third slot body respectively include a plurality of first slot body structures separated from each other, and one first slot body structure is provided between every two adjacent threaded mounting holes; and / or,

[0013] The second slot body and the fourth slot body respectively include a plurality of second slot body structures separated from each other, and a second slot body structure is provided between every two adjacent threaded mounting holes.

[0014] Optionally, the cross section of the groove is formed into any one of the following shapes: a V-shaped cross section, a semicircular cross section, a square cross section, a semi-elliptical cross section, or a trapezoidal cross section.

[0015] Optionally, the sealing strip is interference fit with the groove.

[0016] According to a second aspect of the present application, a pole-mounted circuit breaker is further provided, comprising the sealing structure for a pole-mounted circuit breaker according to any one of the technical solutions in the first aspect of the present application.

[0017] Beneficial effects:

[0018] 1. With the above technical solution, during assembly of the pole-mounted circuit breaker, since the mounting bar is provided with a groove and the sealing strip is provided with a protrusion that matches the groove, during installation, the protrusion can be first inserted into the groove, thereby reliably defining the relative position of the sealing strip and the mounting bar. This effectively prevents bending or displacement of the sealing strip during installation, effectively ensuring the alignment and fit between the sealing strip and the mounting bar, and thus effectively ensuring the sealing performance of the assembled pole-mounted circuit breaker. Furthermore, the sealing strip can be quickly and easily installed stably and reliably, effectively avoiding repeated adjustments to the position and state of the sealing strip, thereby improving the convenience of the installation process.

[0019] 2. Other beneficial effects or advantages of this application will be described in detail in conjunction with the specific structure in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without inventive labor. In addition, it should be understood that the proportional relationship of the various components in the drawings of this specification does not represent the proportional relationship in the actual material selection and design. It is only a schematic diagram of the structure or position, among which:

[0021] Figures 1 to 3 This is a schematic diagram of the sealing structure of a column mounted circuit breaker in the prior art; wherein, Figure 1 This is an assembly diagram of the installation process of the sealing structure of the column-mounted circuit breaker in the existing related technology; Figure 2 yes Figure 1 A magnified schematic diagram of the local structure at point A in the middle; Figure 3 This is a schematic diagram of the three-dimensional structure of a column-mounted circuit breaker in the prior art when the sealing strip is bent during installation;

[0022] Figure 4 1 is a schematic diagram of an assembly structure of a sealing structure for a pole-mounted circuit breaker during installation, provided by an exemplary embodiment of the present application;

[0023] Figure 5 yes Figure 4 A magnified schematic diagram of the local structure at point B in the middle;

[0024] Figure 6 1 is a schematic diagram of a partial cross-sectional structure of a sealing structure for a pole-mounted circuit breaker provided by an exemplary embodiment of the present application;

[0025] Figure 7It is a structural schematic diagram of the mounting square bar of a sealing structure for a pole-mounted circuit breaker provided by an exemplary embodiment of the present application, viewed from a bottom perspective.

[0026] Description of the reference numerals in the accompanying drawings:

[0027] 100-pole-mounted circuit breaker; 1-mounting square bar; 11-groove; 111-first slot body; 112-second slot body; 113-third slot body; 114-fourth slot body; 12-first part; 13-second part; 14-third part; 15-fourth part; 16-threaded mounting hole; 2-sealing strip; 21-protrusion; 22-mounting through hole. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without making any creative efforts shall fall within the scope of protection of the present application.

[0030] In order to facilitate relevant technical personnel to have a clearer and more accurate understanding of the sealing structure of the pole-mounted circuit breaker in the existing related technology and the technical problems existing in the installation process, the following is combined with the attached Figures 1 to 3 The problems existing in the pole-mounted circuit breaker in the existing related technology are analyzed in detail.

[0031] First, see Figure 1 and Figure 2 Existing pole-mounted circuit breakers generally consist of a housing and a base plate (not shown). The housing is a bottomless cavity structure with a chamber formed within it for accommodating related components. The base plate and the housing are detachably connected via bolts (not shown). The sealing structure includes a mounting bar disposed within the bottom cavity of the housing and an annular sealing strip. When installing the base plate, the base plate and the mounting bar are connected via bolts, while the sealing strip is squeezed between the mounting bar and the base plate. The installation process generally involves placing the housing upside down on a mounting surface, exposing its bottom opening. The sealing strip is then placed on the mounting bar, and the base plate is then placed over the sealing strip. Finally, the base plate and the mounting bar are connected via bolts.

[0032] However, since the sealing strip is long and has a certain elasticity (the sealing strip is made of flexible material), it is very easy to bend when the sealing strip is placed on the installation square bar (see Figure 3 ), a slight touch or vibration may also cause the sealing strip to move. In the process of covering the bottom plate with the sealing strip, it is difficult to ensure that the sealing strip is aligned and tightly fitted with the installation square strip, which makes the installation process require repeated adjustments to the position and state of the sealing strip, resulting in a very inconvenient installation process and relatively low assembly efficiency; at the same time, the degree of alignment and fit between the sealing strip and the installation square strip is difficult to accurately control, which may cause the assembled pole-mounted circuit breaker to have a local sealing failure problem, thereby leading to poor sealing performance of the pole-mounted circuit breaker.

[0033] In view of this, the present application provides a new solution, namely, the sealing structure for the pole-mounted circuit breaker of the present application. Through the sealing structure for the pole-mounted circuit breaker of the present application, it is possible to effectively prevent the sealing strip from bending or displacing due to uneven force, thereby effectively improving the convenience of installation and effectively ensuring the sealing performance of the pole-mounted circuit breaker after assembly.

[0034] The technical solution of this application is described in detail below with reference to the accompanying drawings.

[0035] Example 1

[0036] like Figures 4 to 7 As shown, according to the first aspect of the present application, this embodiment provides a sealing structure for a pole-mounted circuit breaker, comprising a mounting square bar 1 and a sealing strip 2; the mounting square bar 1 is formed in an annular shape and is used to be arranged in the bottom opening of the pole-mounted circuit breaker 100, and the side of the mounting square bar 1 close to the sealing strip 2 is recessed inward to form a groove 11; the sealing strip 2 is formed with a protrusion 21 that matches the groove 11.

[0037] With the above technical solution, when assembling the pole-mounted circuit breaker 100, since the mounting bar 1 has the groove 11 formed therein and the sealing strip 2 has the protrusion 21 that matches the groove 11, during the installation process, the protrusion 21 can be first inserted into the groove 11, so that the relative position of the sealing strip 2 and the mounting bar 1 is reliably defined. In this way, on the one hand, bending or displacement of the sealing strip 2 during installation can be effectively prevented, the alignment and fit between the sealing strip 2 and the mounting bar 1 can be effectively ensured, and the sealing performance of the assembled pole-mounted circuit breaker 100 can be effectively guaranteed. On the other hand, the stable and reliable installation of the sealing strip 2 can be completed quickly and easily, and repeated adjustment of the position and state of the sealing strip 2 can be effectively avoided, thereby improving the convenience of the installation process.

[0038] In one embodiment of the present application, Figure 7As shown, the installation square bar 1 of the present application may include a first part 12, a second part 13, a third part 14 and a fourth part 15 connected end to end, and the first part 12, the second part 13, the third part 14 and the fourth part 15 are together enclosed to form an annular structure; wherein, the groove 11 includes a first groove body 111 formed on the first part 12 and a third groove body 113 formed on the third part 14, and / or, the groove 11 includes a second groove body 112 formed on the second part 13 and a fourth groove body 114 formed on the fourth part 15.

[0039] In this way, the annular mounting strip 1 can cooperate with the annular sealing strip 2 to effectively and reliably ensure the sealing performance of the pole-mounted circuit breaker 100. Furthermore, the groove 11 can be formed only on opposite sides of the mounting strip 1 (i.e., the groove 11 can be formed only on the first portion 12 and the third portion 14, or only on the second portion 13 and the fourth portion 15). Correspondingly, the protrusions 21 are also formed on corresponding sides of the sealing strip 2. This not only allows the protrusions 21 on opposite sides of the sealing strip 2 to cooperate with the grooves 11 on opposite sides of the mounting strip 1 during installation, thereby defining the position and state of the sealing strip 2 and ensuring proper alignment and fit between the sealing strip 2 and the mounting strip 1 during installation, but also effectively reduces manufacturing costs and difficulty.

[0040] It can be understood that the reason why the sealing strip 2 is provided with raised portions 21 on opposite sides can ensure the stability of the position and state of the sealing strip 2 during the installation process is that the sealing strip 2 is shaped like a square frame structure, with one of its two opposite sides being longer and the other two opposite sides being shorter. Providing the raised portions 21 on the longer two opposite sides is sufficient to limit the stability of the position and state of the sealing strip 2.

[0041] In one embodiment of the present application, Figure 7 As shown, the first groove body 111, the second groove body 112, the third groove body 113 and the fourth groove body 114 of the present application are connected end to end, so that the groove 11 forms a ring structure.

[0042] In this way, the groove 11 is provided on the mounting square bar 1, and the corresponding raised portion 21 on the sealing strip 2 forms an annular structure connected end to end, which can effectively improve the stability of the position and state of the sealing strip 2 during the installation process, further ensure the alignment and fit between the sealing strip 2 and the mounting square bar 1, and thus effectively ensure the sealing performance of the pole-mounted circuit breaker 100.

[0043] In one embodiment of the present application, a plurality of threaded mounting holes 16 for threaded connection of bolts for mounting the base plate may be formed on the mounting square strip 1 of the present application, and a plurality of mounting through holes 22 corresponding one-to-one to the threaded mounting holes 16 may be formed on the sealing strip 2; wherein, in the vertical direction, the projection of the first trough body 111, the projection of the second trough body 112, the projection of the third trough body 113 and the projection of the fourth trough body 114 are respectively separated from the projection of the threaded mounting holes 16.

[0044] That is to say, the groove parts (i.e., the first groove 111, the second groove 112, the third groove 113 and the fourth groove 114) provided on the mounting bar 1 are separated from the threaded mounting holes 16 formed on the mounting bar 1, which can effectively reduce the influence of the groove 11 on the fastening depth of the threaded mounting holes 16, effectively ensure the connection strength between the base plate and the mounting bar 1, and further improve the sealing performance of the pole-mounted circuit breaker 100 to a certain extent.

[0045] In one embodiment of the present application, the first trough body 111 and the third trough body 113 of the present application may respectively include a plurality of mutually separated first trough body 111 structures, with a first trough body 111 structure being provided between each two adjacent threaded mounting holes 16; and / or, the second trough body 112 and the fourth trough body 114 may respectively include a plurality of mutually separated second trough body 112 structures, with a second trough body 112 structure being provided between each two adjacent threaded mounting holes 16.

[0046] That is to say, the first groove body 111 structure and the second groove body 112 structure arranged on the mounting square bar 1 are separated from each other and are separated from the threaded mounting holes 16 formed on the mounting square bar 1. This not only effectively ensures that each docking position between the mounting square bar 1 and the sealing strip 2 can be tightly fitted, but also helps to reduce the impact of the groove 11 on the fastening depth of the threaded mounting hole 16.

[0047] In one embodiment of the present application, the cross section of the groove 11 of the present application is formed into any one of the following shapes: a V-shaped cross section, a semicircular cross section, a square cross section, a semi-elliptical cross section, and a trapezoidal cross section.

[0048] The V-shaped groove 11 can effectively reduce the difficulty of processing and reliably ensure the stability of the sealing strip 2 during installation. The semicircular, square, and semi-elliptical cross-sections can effectively ensure the stability of the sealing strip 2 during installation and increase the contact area between the sealing strip 2 and the mounting bar 1. Furthermore, the penetration path between the sealing strip 2 and the mounting bar 1 can be extended, further improving the sealing performance of the pole-mounted circuit breaker 100.

[0049] It should be noted that the groove 11 with a trapezoidal cross-section (the upper bottom corresponding to the trapezoidal cross-section is set close to the sealing strip 2) can form a limiting effect on the raised portion 21 of the sealing strip 2 on the basis of extending the penetration path between it and the installation square strip 1, which is beneficial to prevent the sealing strip 2 from easily falling out of the groove 11, and further improve the stability of the sealing strip 2 during the installation process.

[0050] In one embodiment of the present application, the sealing strip 2 of the present application can form an interference fit with the groove 11. The interference fit of the sealing strip 2 and the groove 11 can further improve the sealing performance of the pole-mounted circuit breaker 100.

[0051] According to the second aspect of this application, Figure 4 As shown, a pole-mounted circuit breaker 100 is also provided. The pole-mounted circuit breaker 100 may include the sealing structure for the pole-mounted circuit breaker in any technical solution of the first aspect of the present application.

[0052] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A sealing structure for a pole mounted circuit breaker, characterized in that: The invention comprises a mounting square bar (1) and a sealing bar (2); the mounting square bar (1) is formed in a ring shape and is used to be arranged in the bottom opening of a pole-mounted circuit breaker; a side of the mounting square bar (1) close to the sealing bar (2) is inwardly recessed to form a groove (11); and a protrusion (21) is formed on the sealing bar (2) and matches the groove (11).

2. The sealing structure for a pole mounted circuit breaker according to claim 1, wherein: The installation square bar (1) comprises a first part (12), a second part (13), a third part (14) and a fourth part (15) connected end to end, wherein the first part (12), the second part (13), the third part (14) and the fourth part (15) are enclosed together to form a ring structure; The groove (11) includes a first groove body (111) formed on the first part (12) and a third groove body (113) formed on the third part (14), and / or the groove (11) includes a second groove body (112) formed on the second part (13) and a fourth groove body (114) formed on the fourth part (15).

3. The sealing structure for a pole mounted circuit breaker according to claim 2, wherein: The first groove body (111), the second groove body (112), the third groove body (113) and the fourth groove body (114) are connected end to end, so that the groove (11) forms a ring structure.

4. The sealing structure for a pole mounted circuit breaker according to claim 2, wherein: The installation square strip (1) is formed with a plurality of threaded installation holes (16) for threaded connection of bolts for installing the base plate, and the sealing strip (2) is formed with a plurality of installation through holes (22) corresponding one-to-one to the threaded installation holes (16); Wherein, in the vertical direction, the projection of the first trough body (111), the projection of the second trough body (112), the projection of the third trough body (113) and the projection of the fourth trough body (114) are respectively The projections of the threaded mounting holes (16) are separated from each other.

5. The sealing structure for a pole mounted circuit breaker according to claim 4, wherein: The first trough body (111) and the third trough body (113) respectively include a plurality of first trough body (111) structures separated from each other, and one first trough body (111) structure is provided between each two adjacent threaded mounting holes (16); and / or, The second trough body (112) and the fourth trough body (114) respectively include a plurality of second trough body (112) structures separated from each other, and a second trough body (112) structure is provided between every two adjacent threaded mounting holes (16).

6. The sealing structure for a pole mounted circuit breaker according to claim 1, wherein: The cross section of the groove (11) is formed into any one of the following shapes: a V-shaped cross section, a semicircular cross section, a square cross section, a semi-elliptical cross section, and a trapezoidal cross section.

7. The sealing structure for a pole mounted circuit breaker according to claim 1, wherein: The sealing strip (2) and the groove (11) are interference fit.

8. A pole mounted circuit breaker, characterized in that: The sealing structure for a pole mounted circuit breaker comprises the sealing structure according to any one of claims 1 to 7.

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