Circuit breaker sealing structure

Abstract

The utility model discloses a breaker sealing structure, which comprises an upper shell (1), a middle body (2), sealing gaskets (3) and a lower shell (4), the middle body (2) is arranged between the upper shell (1) and the lower shell (4), and the sealing gaskets (3) are respectively embedded between the upper shell (1) and the middle body (2) and between the middle body (2) and the lower shell (4). The circuit breaker sealing structure provided by the utility model is good in sealing effect, reliable in sealing, good in safety, environment-friendly, pollution-free and leakage-free.

Description

Technical Field

[0001] The utility model relates to the technical field of relay sealing, and particularly relates to a relay sealing structure. Background Art

[0002] The connection between the upper shell, the intermediate body and the lower shell of the relay mostly adopts the connection methods of screws, nuts or riveting. No matter what material the shell is made of, the sealing between the shells is particularly important. The working principle of the relay: relying on the gas pressure generated by the initiator acting on the conductor to disconnect the conductor to achieve power-off. During the development of the relay, there are often contradictions between the gas pressure generated by the initiator and the pressure borne by the shell: that is, when the gas pressure is high, the conductor is easy to disconnect, but when the shell bears a large pressure, the shell is prone to rupture; when the gas pressure is low, the disconnection effect of the conductor is poor and it cannot act reliably. Through theoretical analysis and practical verification, the effective sealing of the shell can solve this problem. Therefore, there is an urgent need for a relay sealing structure with reliable sealing. Summary of the Utility Model

[0003] The utility model provides a relay sealing structure, aiming to solve the technical problem of unreliable sealing of the existing relay.

[0004] To solve the above problems, the technical solution adopted by the utility model is:

[0005] A relay sealing structure includes an upper shell, an intermediate body, a sealing gasket and a lower shell. The intermediate body is arranged between the upper shell and the lower shell, and the sealing gaskets are respectively embedded between the upper shell and the intermediate body, and between the intermediate body and the lower shell.

[0006] Specifically, convex portions are arranged on the upper and lower surfaces of the sealing gasket.

[0007] Specifically, a first prefabricated groove is formed on the bottom surface of the upper shell, and the first prefabricated groove cooperates with the upper convex portion of the upper sealing gasket.

[0008] Specifically, second prefabricated grooves are formed on both the upper and lower surfaces of the intermediate body, and the second prefabricated grooves respectively cooperate with the lower convex portion of the upper sealing gasket and the upper convex portion of the lower sealing gasket.

[0009] Specifically, a third prefabricated groove is formed on the upper surface of the lower shell, and the third prefabricated groove cooperates with the lower convex portion of the lower sealing gasket.

[0010] Specifically, the sealing gasket is an insulating and ductile sealing gasket.

[0011] Specifically, the cross-section of the convex portion is a cylindrical shape with a spherical head, and the cross-sections of the first prefabricated groove, the second prefabricated groove and the third prefabricated groove are square.

[0012] Based on the above technical solution, the following technical effects can be achieved:

[0013] In the present utility model, a sealing gasket with a convex portion is assembled between the upper shell and the intermediate body, and between the intermediate body and the lower shell. The convex portion is embedded in the grooves of the upper shell, the intermediate body, and the lower shell. The sealing gasket has a certain toughness and seals by extrusion deformation between the shell planes, sealing the gas, ensuring the effective action of the gas, effectively reducing the charge amount of the initiator, reducing the impact force of the gas on the upper shell, the intermediate body, and the lower shell, and ensuring the shell strength. The sealing effect is good, the sealing is reliable, the safety is good, it is environmentally friendly, pollution-free, and there is no leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the breaker sealing structure of the present utility model;

[0015] Figure 2 It is a bottom view of the upper shell;

[0016] Figure 3 It is a sectional view of the upper shell;

[0017] Figure 4 It is a sectional view of the intermediate body;

[0018] Figure 5 It is a top view of the lower shell;

[0019] Figure 6 It is a sectional view of the lower shell;

[0020] Figure 7 It is a sectional view of the sealing gasket.

[0021] In the figure: 1 - upper shell, 2 - intermediate body, 3 - sealing gasket, 4 - lower shell. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0024] In the description of the present utility model, unless otherwise clearly defined, terms such as setting, installation, connection, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0026] As Figures 1-7 shown, a sealing structure of a circuit breaker includes an upper housing 1, an intermediate body 2, a sealing gasket 3, and a lower housing 4. The intermediate body 2 is disposed between the upper housing 1 and the lower housing 4, and the sealing gasket 3 is respectively embedded between the upper housing 1 and the intermediate body 2, and between the intermediate body 2 and the lower housing 4.

[0027] According to an embodiment of the present invention, convex portions are provided on the upper and lower surfaces of the sealing gasket 3.

[0028] According to an embodiment of the present invention, a first preformed groove is formed on the bottom surface of the upper housing 1, and the first preformed groove cooperates with the upper convex portion of the upper sealing gasket 3.

[0029] According to an embodiment of the present invention, second preformed grooves are formed on the upper and lower surfaces of the intermediate body 2, and the second preformed grooves respectively cooperate with the lower convex portion of the upper sealing gasket 3 and the upper convex portion of the lower sealing gasket 3.

[0030] According to an embodiment of the present invention, a third preformed groove is formed on the upper surface of the lower housing 4, and the third preformed groove cooperates with the lower convex portion of the lower sealing gasket 3.

[0031] According to an embodiment of the present invention, the sealing gasket 3 is an insulating and tough sealing gasket, such as fluororubber, silicone rubber, nitrile rubber, ethylene propylene diene monomer rubber, ethylene propylene rubber, polytetrafluoroethylene rubber, chloroprene rubber, etc.

[0032] According to an embodiment of the present invention, the cross-section of the convex portion is a cylindrical shape with a ball head, and the cross-sections of the first preformed groove, the second preformed groove, and the third preformed groove are square. The cross-section of the convex portion is not limited to this shape and may also be square or conical, and the cross-sectional shapes of the first preformed groove, the second preformed groove, and the third preformed groove may also be matching conical or semi-circular shapes.

[0033] The present utility model has been described in detail with reference to the accompanying drawings and embodiments. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. A relay sealing structure, comprising an upper housing (1), an intermediate body (2), a gasket (3) and a lower housing (4), characterized in that, The intermediate body (2) is arranged between the upper housing (1) and the lower housing (4), and the sealing gaskets (3) are respectively embedded between the upper housing (1) and the intermediate body (2), and between the intermediate body (2) and the lower housing (4).

2. The electrical disconnecting switch sealing structure according to claim 1, characterized in that, Protruding portions are arranged on the upper and lower surfaces of the sealing gasket (3).

3. The electrical disconnecting switch sealing structure according to claim 2, characterized in that, A first preformed groove is formed in the bottom surface of the upper housing (1), and the first preformed groove is matched with the upper protruding portion of the upper sealing gasket (3).

4. A relay sealing structure according to claim 3, wherein, Second preformed grooves are formed on both the upper and lower surfaces of the intermediate body (2), and the second preformed grooves are respectively matched with the lower protruding portion of the upper sealing gasket (3) and the upper protruding portion of the lower sealing gasket (3).

5. The electrical disconnecting switch sealing structure according to claim 4, characterized in that, A third preformed groove is formed in the upper surface of the lower housing (4), and the third preformed groove is matched with the lower protruding portion of the lower sealing gasket (3).

6. The sealed structure of a disconnector according to claim 1, wherein, The sealing gasket (3) is an insulating and tough sealing gasket.

7. A circuit breaker sealing structure according to claim 5, characterized in that, The cross section of the protruding portion is a cylindrical shape with a ball head, and the cross sections of the first preformed groove, the second preformed groove, and the third preformed groove are square shapes.

Images