Closed disconnecting switch with ice breaking function

Abstract

The application provides a closed disconnecting switch with ice breaking function, which comprises a first static contact assembly, a second static contact assembly and a movable contact blade assembly connecting the first static contact assembly and the second static contact assembly. One end of the movable contact blade assembly is rotatably connected with the first static contact assembly, and the other end of the movable contact blade assembly can be separated from or contacted with the second static contact assembly, so as to realize the opening and closing of the disconnecting switch. The closed disconnecting switch with ice breaking function reduces the ice thickness of the joint between the movable contact blade assembly and the first static contact assembly through the sealing design. On the other hand, the opening and closing function is realized by the rotation of the movable contact blade assembly around the first static contact assembly, and the ice at the joint between the first and second insulating housings is cut by the knife edge formed by the edge of the second insulating housing used for cooperating with the first insulating housing, so that the ice breaking capacity is improved.

Description

Technical Field

[0001] This invention relates to the field of disconnector technology, and more specifically to a closed disconnector with ice-breaking function. Background Technology

[0002] A disconnector switch (commonly known as a "knife switch") is a switching device mainly used for isolating power supplies, switching operations, and connecting and disconnecting circuits.

[0003] Existing disconnect switches typically employ an open design at the contact point between the moving and stationary contacts. In icy conditions, the switch's exterior becomes covered in ice, particularly at the junction of the stationary and moving contacts, where the ice thickness can reach up to 20mm. Currently, one solution for ensuring normal operation of disconnect switches under icing conditions is de-icing, such as using direct current to melt the ice. However, this method is time-consuming and poses certain safety hazards. Disconnect switches employing non-de-icing methods rely on an operating mechanism to move the moving contact and force ice breaking. However, due to limitations in the power and rigidity of the operating mechanism, as well as the strength and rigidity of the conductive components, this method cannot achieve the desired ice-breaking effect when the ice layer is too thick.

[0004] Therefore, how to solve the technical problem of disconnecting switches being unable to be opened and closed normally due to excessive ice buildup has become an urgent technical problem for those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a closed disconnecting switch with ice-breaking function to solve the technical problem that the disconnecting switch is affected by the difficulty in breaking ice due to excessive ice accumulation, thus affecting the normal opening and closing of the disconnecting switch.

[0006] To achieve the above objectives, the present invention provides a closed disconnect switch with ice-breaking function, comprising:

[0007] The first stationary contact assembly includes a first insulating shell and a first stationary contact conductor fixedly encased within the first insulating shell. The first insulating shell is disc-shaped, and the first stationary contact conductor is exposed at least one end face of the first insulating shell.

[0008] The second stationary contact assembly includes a second stationary contact conductor;

[0009] The moving contact assembly includes a second insulating shell and a moving contact conductor fixedly encased within the second insulating shell. One end of the second insulating shell, which mates with the first insulating shell, has a notch for insertion of the first insulating shell. The shape of the notch is adapted to the shape of the first insulating shell. The first insulating shell is inserted into the notch of the second insulating shell and is hinged together by a pivot. One end of the moving contact conductor is always in rotatable contact with the first stationary contact conductor, and the other end of the moving contact conductor can contact or detach from the second stationary contact conductor.

[0010] Preferably, the outer peripheral surface of the first insulating shell is a gradually expanding surface that extends from the two ends of the first insulating shell to the middle of the first insulating shell, so that the outer peripheral surface of the first insulating shell is formed as an outwardly convex V-shaped profile surface.

[0011] The bottom of the notch in the second insulating shell is a V-shaped groove that matches the shape of the first insulating shell.

[0012] Preferably, the second insulating housing has a movable door on the side near the second stationary contact conductor for inserting the second stationary contact conductor into the second insulating housing.

[0013] Preferably, the movable door has a door frame surrounding its doorway, the door frame protruding from the outer surface of the second insulating housing;

[0014] The bottom of the second stationary contact conductor is provided with a sealing gasket that mates with the door frame of the movable door. When the circuit is closed, the second stationary contact conductor is inserted into the second insulating housing through the movable door and comes into contact with the moving contact conductor. The door frame of the movable door is embedded in the sealing gasket, forming a seal on the movable door.

[0015] Preferably, the door frame is made of plastic and the sealing gasket is made of silicone.

[0016] Preferably, the first stationary contact conductor is exposed on both end faces of the first insulating shell;

[0017] The moving contact conductor consists of two blade conductors, which are fixedly disposed on both sides of the second insulating shell and respectively in contact with the first stationary contact conductors on the two end faces of the first insulating shell.

[0018] Preferably, the second stationary contact conductor is in the shape of a rectangular sheet.

[0019] When the circuit is closed, the second stationary contact conductor is inserted into the gap between the two blade conductors, and the two blade conductors respectively contact the two sides of the second stationary contact conductor.

[0020] Preferably, the second stationary contact conductor has its two sides that contact the two blade conductors beveled.

[0021] Preferably, the second stationary contact assembly further includes an arc-shaped shielding wall surrounding the second stationary contact conductor, the opening of the arc-shaped shielding wall being opposite to the first stationary contact assembly;

[0022] The end of the second insulating shell facing the arc-shaped shielding wall is provided with an elastic conical lock head, and the arc-shaped shielding wall is provided with a locking hole for the elastic conical lock head to be engaged.

[0023] Preferably, the disconnecting switch further includes a carrier, a first insulator and a second insulator fixed on the carrier for mounting the first stationary contact assembly and the second stationary contact assembly respectively, and a first terminal block and a second terminal block electrically connected to the first stationary contact conductor and the second stationary contact conductor respectively.

[0024] The present invention has the following beneficial effects:

[0025] As can be seen from the above technical solution, in this enclosed isolating switch with ice-breaking function, the end of the second insulating shell that mates with the first insulating shell has a notch for the first insulating shell to be inserted. The shape of the notch matches the shape of the first insulating shell, and the mating gap between the notch of the second insulating shell and the mating surface of the first insulating shell is small. Compared with the traditional open design, this invention, through the mating of the second insulating shell and the first insulating shell, forms a seal at the joint between the moving contact assembly and the first stationary contact assembly, thus reducing the ice thickness at the joint between the moving contact assembly and the first stationary contact assembly.

[0026] Furthermore, because the gap between the second and first insulating shells is very small, a small amount of water will form a thin layer of ice outside the gap. This keeps more water outside the second insulating shell from entering and forming a thicker layer of ice. Also, because the first and second insulating shells fit together to form a small opening, when the second insulating shell is rotated, the edge of the second insulating shell that mates with the first insulating shell will form a cutting edge to shear the ice at the gap, thereby improving ice-breaking capability.

[0027] Furthermore, this enclosed isolating switch with ice-breaking function achieves the opening and closing functions by rotating the moving contact blade assembly, thus utilizing rotational inertia to enhance ice-breaking capability.

[0028] In summary, this enclosed disconnector with ice-breaking function reduces the ice thickness at the junction of the moving contact assembly and the first stationary contact assembly through a sealed design. Furthermore, it achieves the opening and closing functions by rotating the moving contact assembly around the first stationary contact assembly. The edge of the second insulating shell, which mates with the first insulating shell, forms a cutting edge to cut the ice at the gap between the two, thus enhancing the ice-breaking capability. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and provide explanations, but do not constitute an undue limitation of this application. In the drawings:

[0030] Figure 1 This is a front view of the closed disconnector with ice-breaking function described in this invention in the closed state.

[0031] Figure 2 for Figure 1 A schematic diagram of the structure after the moving blade assembly is hidden;

[0032] Figure 3 This is a first perspective view of the closed disconnector with ice-breaking function described in this invention in the closed state.

[0033] Figure 4 This is a schematic diagram of the structure of the moving contact conductor of the present invention installed inside the second insulating shell;

[0034] Figure 5 This is a first perspective view of the closed disconnector with ice-breaking function described in the present invention in the open state.

[0035] Figure 6 This is a second perspective view of the closed disconnector with ice-breaking function described in this invention in the closed state.

[0036] Figure 7 This is a second perspective view of the closed disconnector with ice-breaking function described in the present invention in the open state;

[0037] Figure 8 This is a third perspective view of the closed disconnector with ice-breaking function described in this invention in the open state.

[0038] Figure 9 for Figure 8 Enlarged view of the area within the middle circle;

[0039] Figure 10 This is a schematic diagram of the structure of the second stationary contact conductor inserted into the second insulating shell and in contact with the moving contact conductor according to the present invention;

[0040] Attached icon number

[0041] 10-First stationary contact assembly; 11-First insulating housing; 12-First stationary contact conductor;

[0042] 20-Second stationary contact assembly; 21-Shielding wall; 22-Second stationary contact conductor; 23-Clip hole; 24-Sealing gasket;

[0043] 30-Moving contact knife assembly; 31-Second insulating housing; 32-Moving contact knife conductor; 33-Moving door; 34-Door frame; 35-Conical lock cylinder;

[0044] 40 - Bearing base; 50 - First insulator; 60 - Second insulator; 70 - First terminal block; 80 - Second terminal block;

[0045] a. V-shaped groove; b. V-shaped profile surface. Detailed Implementation

[0046] The core of this invention is to provide a closed disconnect switch with ice-breaking function to solve the technical problem that the disconnect switch is affected by the difficulty in breaking ice due to excessive ice accumulation, thus affecting the normal opening and closing of the disconnect switch.

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] Please see Figure 1-5 , Figure 1 This is a front view of the closed disconnector with ice-breaking function described in this invention in the closed state. Figure 2 for Figure 1 A schematic diagram of the structure after the hidden moving blade assembly 30 is shown. Figure 3 This is a first perspective view of the closed disconnector with ice-breaking function described in this invention in the closed state. Figure 4 This is a schematic diagram of the structure of the moving contact conductor 32 of the present invention installed inside the second insulating shell 31; Figure 5 This is a first perspective view of the closed disconnector with ice-breaking function described in the present invention in the open state. Figure 6 This is a second perspective view of the closed disconnector with ice-breaking function described in this invention in the closed state.

[0049] This invention discloses a closed disconnector with ice-breaking function, including a first stationary contact assembly 10, a second stationary contact assembly 20, and a moving contact assembly 30 connecting the first stationary contact assembly 10 and the second stationary contact assembly 20. For example... Figure 1 , Figure 3 , Figure 5 As shown, one end of the moving contact assembly 30 is rotatably connected to the first stationary contact assembly 10, and the other end of the moving contact assembly 30 can be disengaged from or in contact with the second stationary contact assembly 20, thereby realizing the opening and closing of the disconnecting switch.

[0050] Specifically, the first stationary contact assembly 10 includes a first insulating shell 11 and a first stationary contact conductor 12 fixedly encased within the first insulating shell 11. The first insulating shell 11 is disc-shaped, and the first stationary contact conductor 12 protrudes from at least one end face of the first insulating shell 11. The second stationary contact assembly 20 includes a second stationary contact conductor 22 (see...). Figure 5 ).

[0051] The moving contact assembly 30 includes a second insulating housing 31 and a moving contact conductor 32 fixedly encased within the second insulating housing 31. The structure of the moving contact conductor 32 fixedly encased within the second insulating housing 31 can be referred to... Figure 4 .like Figure 6 As shown, the second insulating shell 31 has a notch at one end for mates with the first insulating shell 11, the shape of which matches the shape of the first insulating shell 11. The first insulating shell 11 is inserted into the notch of the second insulating shell 31 and hinged by a pivot to achieve a rotatable connection between the second insulating shell 31 and the first insulating shell 11. The moving contact conductor 32 is disposed inside the second insulating shell, one end of which is always in rotatable contact with the first contact head conductor 12, and the other end of which can contact or detach from the second stationary contact head conductor 22.

[0052] In practical application, this enclosed disconnecting switch with ice-breaking function, when opened, causes the moving contact conductor 32 to rotate with the second insulating shell 31 in a direction away from the second stationary contact conductor 22, thus disconnecting the moving contact conductor 32 from the second stationary contact conductor 22 and de-energizing it; when closed, the moving contact conductor 32 rotates with the second insulating shell 31 in a direction closer to the second stationary contact conductor 22, thus making contact with the second stationary contact conductor 22 and conducting electricity.

[0053] As can be seen from the above technical solution, in this closed disconnect switch with ice-breaking function, the end of the second insulating shell 31 that mates with the first insulating shell 11 is designed with a notch for the insertion of the first insulating shell 11. The shape of the notch matches the shape of the first insulating shell, and the mating gap between the notch of the second insulating shell 31 and the mating surface of the first insulating shell 11 is small. Compared with the traditional open design, this invention, through the mating of the second insulating shell 31 and the first insulating shell 11, forms a seal at the joint between the moving contact assembly 30 and the first stationary contact assembly 10, thus reducing the ice thickness at the joint between the moving contact assembly 30 and the first stationary contact assembly 10.

[0054] Furthermore, because the gap between the second insulating shell 31 and the first insulating shell 11 is very small, a small amount of water will form a thin layer of ice outside the gap. This keeps more water outside the second insulating shell 31 from entering and forming a thicker layer of ice. Also, because the first insulating shell 11 and the second insulating shell 31 fit together to form a small gap, when the second insulating shell 31 is rotated, the edge of the second insulating shell 31 that engages with the first insulating shell will form a cutting edge to shear the ice at the gap, thereby improving ice-breaking capability.

[0055] Furthermore, the closed disconnect switch with ice-breaking function realizes the opening and closing functions by rotating the moving contact assembly 30, thus utilizing rotational inertia to improve the ice-breaking capability.

[0056] In summary, this enclosed disconnect switch with ice-breaking function reduces the ice thickness at the joint between the moving contact assembly 30 and the first stationary contact assembly 10 through a sealed design. On the other hand, it achieves the opening and closing functions by rotating the moving contact assembly 30 around the first stationary contact assembly 10. The edge of the second insulating shell 31 that mates with the first insulating shell 11 forms a cutting edge to cut the ice at the gap between the two, thereby improving the ice-breaking capability.

[0057] Please see Figure 5 , Figure 6 In some specific embodiments, the outer peripheral surface of the first insulating shell 11 is a gradually expanding surface that extends from the two ends of the first insulating shell 11 towards the middle of the first insulating shell 11, so that the outer peripheral surface of the first insulating shell 11 forms an outwardly convex V-shaped profile surface b. The bottom of the notch of the second insulating shell 31 is a V-shaped groove a that matches the shape of the first insulating shell 11.

[0058] During the opening and closing of the gate, the first insulating shell 11 remains stationary as a support, while the second insulating shell 31 rotates around the first insulating shell 11. By designing the outer peripheral surface of the first insulating shell 11 as an outwardly convex V-shaped profile surface b, and designing the bottom of the corresponding notch of the second insulating shell 31 as a V-shaped groove a that matches the shape of the V-shaped profile surface b, the following advantages are achieved: Firstly, the fit between the second insulating shell 31 and the first insulating shell 11 is very small, resulting in a thinner ice layer at the gap between the first and second insulating shells 11, making it easier to rotate and break the ice. Secondly, when the second insulating shell is rotated, the V-shaped groove a at the bottom of the notch of the second insulating shell 31 forms a V-shaped cutting edge, which can better cut the ice layer at the gap, thus improving the ice-breaking ability. It should be noted that, through multiple experiments, the applicant has verified that designing the outer peripheral surface of the first insulating shell 11 as an outwardly convex V-shaped profile surface b and the bottom of the notch of the second insulating shell 31 as a corresponding V-shaped groove a provides better ice-breaking capability.

[0059] Please see Figure 7-10 , Figure 7 This is a second perspective view of the closed disconnector with ice-breaking function described in the present invention in the open state; Figure 8 This is a third perspective view of the closed disconnector with ice-breaking function described in this invention in the open state. Figure 9 for Figure 8 Enlarged view of the area within the middle circle;

[0060] Figure 10 This is a schematic diagram of the structure of the second stationary contact conductor 22 of the present invention, which is inserted into the second insulating shell 31 and contacts the moving contact conductor 32.

[0061] In some more specific embodiments, the second insulating housing 31 has a movable door 33 on the side near the second stationary contact conductor 22 for insertion of the second stationary contact conductor 22. The movable door 33 has a door frame 34 around its opening, which protrudes from the outer surface of the second insulating housing 31. The bottom of the second stationary contact conductor 22 is provided with a sealing gasket 24 that mates with the door frame 34 of the movable door 33.

[0062] When the circuit is closed, the second stationary contact conductor 22 is inserted into the second insulating housing 31 through the movable door 33 and makes contact with the moving contact conductor 32 inside the second insulating housing 31 to conduct electricity. The door frame 34 of the movable door 33 then embeds into the sealing gasket 24, thus forming a seal on the movable door 33. In this way, in the open state, the door opening of the movable door 33 can close itself, preventing water from accumulating and freezing at the movable door 33; simultaneously, in the closed state, the embedding of the door frame 34 into the sealing gasket 24 also forms a seal on the movable door 33, preventing water from accumulating and freezing at the movable door 33. In other words, at the end where the moving contact assembly 30 and the second stationary contact assembly 20 are joined, the above-mentioned sealing design reduces the ice thickness at the joint of the moving contact assembly 30 and the second stationary contact assembly 20, thus facilitating ice breaking.

[0063] More preferably, the door frame 34 of the movable door 33 can be made of plastic, and the sealing gasket 24 can be made of silicone. In this way, the door frame 34 is hard, while the sealing gasket 24 is soft, so that the door frame 34 can be better embedded in the sealing gasket 24 when the switch is closed, thereby achieving a better seal for the movable door 33.

[0064] In some other embodiments, the first stationary contact conductor 12 is exposed on both end faces of the first insulating housing 11. Correspondingly, the moving contact conductor 32 consists of two blade conductors, which are fixedly disposed on both sides of the second insulating housing 31 and respectively in contact with the first stationary contact conductor 12 on both end faces of the first insulating housing 11. During opening and closing, the two blade conductors rotate with the second insulating housing 31, and the two blade conductors 32 are always in rotational contact with the first stationary contact conductor 12 on both end faces of the first insulating housing 11, thereby ensuring the contact stability between the moving contact conductor 32 and the first stationary contact conductor 12.

[0065] In other specific embodiments, the second stationary contact conductor 22 is generally rectangular in shape. When the circuit is closed, the second stationary contact conductor 22 is inserted into the gap between the two blade conductors, and the two blade conductors respectively contact the two sides of the second stationary contact conductor 22. The mating structure of the two blade conductors and the second stationary contact conductor 22 can be referred to Figure 10 .

[0066] In this way, the moving contact conductor 32 adopts a double-blade structure. The ice buildup on the moving contact conductor 32 and the second stationary contact conductor 22 is removed through the impact and sliding friction between the two blade conductors and the two sides of the second stationary contact conductor 22, facilitating ice removal. Preferably, the two sides of the second stationary contact conductor 22 that contact the two blade conductors are chamfered. By designing the two sides of the second stationary contact conductor 22 into a blade-shaped structure, it is easy to remove the ice buildup through sliding friction with the two blade conductors.

[0067] like Figure 7As shown, in some other embodiments, the second stationary contact assembly 20 further includes an arcuate shielding wall 21 surrounding the second stationary contact conductor 22 (see Figure 20). Figure 5 The opening of the arc-shaped shielding wall 21 is opposite to the first stationary contact assembly 10. The end of the second insulating shell 31 facing the arc-shaped shielding wall 21 is provided with an elastic conical lock head 35, and the arc-shaped shielding wall 21 is provided with a locking hole 23 for the elastic conical lock head 35 to be engaged.

[0068] The shielding wall 21 prevents ice and snow from directly depositing around the second stationary contact conductor 22, reducing the area and thickness of ice accumulation on and around the second stationary contact conductor 22. The latch adopts an impact-type telescopic elastic conical lock head 35 design, which is easy to break ice. The elastic conical lock head 35 has a built-in compression spring. When the circuit is closed, the elastic spring force pushes the elastic conical lock head 35 into the locking hole 23 to achieve the locking function. The ice-breaking function is achieved by the impact of the elastic conical lock head 35 and the arc-shaped shielding wall, which is conducive to ice breaking.

[0069] like Figure 1 As shown, in some other specific embodiments, the disconnecting switch also includes a carrier 40, a first insulator 50 and a second insulator 60 fixed on the carrier 40 for mounting the first stationary contact assembly 10 and the second stationary contact assembly 20 respectively, and a first terminal block 70 and a second terminal block 80 electrically connected to the first stationary contact conductor and the second stationary contact conductor respectively.

[0070] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0071] It should be understood that the use of terms such as "system," "device," "unit," and / or "module" in this application is merely one method of distinguishing different components, elements, parts, sections, or assemblies at different levels. However, if other terms can achieve the same purpose, they may be replaced by other expressions.

[0072] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "a," and / or "the" are not specifically singular and may include the plural. Generally, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements. An element defined by the phrase "comprising an..." does not exclude the presence of other identical elements in the process, method, product, or apparatus that includes the element.

[0073] In the description of the embodiments of this application, unless otherwise stated, " / " means "or", for example, A / B can mean A or B; "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more.

[0074] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0075] If a flowchart is used in this application, it is used to illustrate the operations performed by the system according to embodiments of this application. It should be understood that the preceding or following operations are not necessarily performed in exact order. Instead, the steps can be processed in reverse order or simultaneously. Furthermore, other operations can be added to these processes, or one or more steps can be removed from them.

[0076] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A closed disconnect switch with ice-breaking function, characterized in that, include: The first stationary contact assembly (10) includes a first insulating shell (11) and a first stationary contact conductor (12) fixedly encased within the first insulating shell (11). The first insulating shell (11) is in the shape of a disc, and the first stationary contact conductor (12) is exposed at least one end face of the first insulating shell (11). The second stationary contact assembly (20) includes a second stationary contact conductor (22); And a moving contact assembly (30), the moving contact assembly (30) includes a second insulating shell (31) and a moving contact conductor (32) fixedly covered in the second insulating shell (31). The second insulating shell (31) has a notch for the first insulating shell (11) to be inserted at one end for the first insulating shell (11) to be inserted. The shape of the notch is adapted to the shape of the first insulating shell (11). The first insulating shell (11) is inserted into the notch of the second insulating shell (31) and is hinged by a pivot. One end of the moving contact conductor (32) is always in rotational contact with the first stationary contact conductor (12). The other end of the moving contact conductor (32) can contact or detach from the second stationary contact conductor (22). The outer peripheral surface of the first insulating shell (11) is a gradually expanding surface that gradually expands from the two ends of the first insulating shell (11) to the middle of the first insulating shell (11), so that the outer peripheral surface of the first insulating shell (11) is formed as an outwardly protruding V-shaped profile surface (b). The bottom of the notch in the second insulating shell (31) is a V-shaped groove (a) that matches the shape of the first insulating shell (11).

2. The enclosed isolating switch with ice-breaking function according to claim 1, characterized in that, The second insulating housing (31) has a movable door (33) on the side near the second stationary contact conductor (22) for inserting the second stationary contact conductor (22) into the second insulating housing (31).

3. The enclosed isolating switch with ice-breaking function according to claim 2, characterized in that, The movable door (33) has a door frame (34) around its door opening, the door frame (34) protruding from the outer surface of the second insulating shell (31); The bottom of the second stationary contact conductor (22) is provided with a sealing gasket (24) that cooperates with the door frame (34) of the movable door (33). When the circuit is closed, the second stationary contact conductor (22) is inserted into the second insulating shell (31) through the movable door (33) and contacts the moving contact conductor (32). The door frame (34) of the movable door (33) is embedded in the sealing gasket (24) to form a seal on the movable door (33).

4. The enclosed isolating switch with ice-breaking function according to claim 3, characterized in that, The door frame (34) is made of plastic, and the sealing gasket (24) is made of silicone.

5. The enclosed isolating switch with ice-breaking function according to any one of claims 1-4, characterized in that, The first stationary contact conductor (12) is exposed on both end faces of the first insulating shell (11); The moving contact conductor (32) consists of two blade conductors, which are fixedly disposed on both sides of the second insulating shell (31) and respectively in contact with the first stationary contact conductor (12) on the two end faces of the first insulating shell (11).

6. The enclosed isolating switch with ice-breaking function according to claim 5, characterized in that, The second stationary contact conductor (22) is generally rectangular in shape. When the circuit is closed, the second stationary contact conductor (22) is inserted into the gap between the two blade conductors, and the two blade conductors respectively contact the two sides of the second stationary contact conductor (22).

7. The enclosed isolating switch with ice-breaking function according to claim 6, characterized in that, The second stationary contact conductor (22) has its two sides that come into contact with the two blade conductors beveled.

8. The enclosed isolating switch with ice-breaking function according to claim 1, characterized in that, The second stationary contact assembly (20) further includes an arcuate shielding wall (21) surrounding the second stationary contact conductor (22), the opening of which is opposite to the first stationary contact assembly (10); The second insulating shell (31) is provided with an elastic conical lock head (35) at the end facing the arc-shaped shielding wall (21), and the arc-shaped shielding wall (21) is provided with a locking hole (23) for the elastic conical lock head (35) to be engaged.

9. The enclosed isolating switch with ice-breaking function according to claim 1, characterized in that, The disconnecting switch also includes a carrier (40), a first insulator (50) and a second insulator (60) fixed on the carrier (40) for mounting the first stationary contact assembly (10) and the second stationary contact assembly (20), and a first terminal block (70) and a second terminal block (80) electrically connected to the first stationary contact conductor (12) and the second stationary contact conductor (22), respectively.

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