Railway single-phase circuit breaker

Abstract

The utility model belongs to the field of circuit breakers, and provides a railway single-phase circuit breaker, which comprises a spring operating mechanism, a frame, a current mutual inductance mechanism, a propelling mechanism, a solid-sealed polar pole, a first conductive contact arm, a first tulip contact, a second conductive contact arm and a second tulip contact. According to the utility model, through the encapsulation structure of the current mutual inductance mechanism and the second conductive contact arm, the insulation performance and the detection precision of the device are improved; through the modularized spring operation mechanism, the cost and the maintenance difficulty of the device are reduced, and the stability of the device is improved; and through a lead screw nut structure propelling mechanism, the time and power consumption of vehicle entering and exiting are reduced, and the interchangeability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the field of circuit breakers, in particular to a railway single-phase circuit breaker. Background Art

[0002] The currently widely used railway single-phase circuit breaker consists of: a frame, an interlocking device installed in the cabinet, a circuit breaker operating mechanism installed on the frame, a current transformer set behind the circuit breaker, as well as the main circuit of the circuit breaker, upper and lower outgoing wires and other components.

[0003] The main shortcomings of existing single-phase circuit breakers include: the 3AF modular spring operating mechanism used in the circuit breaker is expensive, has average performance, and is relatively complicated to replace and maintain; the main circuit of the circuit breaker is exposed, has poor insulation performance, and has no dust protection capability; the current transformer and the lower outlet are connected and fixed with a copper busbar, and the connection part is exposed, which cannot effectively provide insulation protection; the screw and nut structure propulsion mechanism is mostly a manual mechanism with a sickle shaft solution, which is time-consuming and labor-intensive to produce. The circuit breaker needs to be pushed in and out by force during the process of entering and exiting, which is difficult to operate, has extremely poor interchangeability, and is very difficult to adjust on site. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of the present utility model is to provide a railway single-phase circuit breaker, which improves the insulation performance and detection accuracy of the device through the encapsulation structure of the current mutual inductance mechanism and the second conductive contact arm; reduces the cost and maintenance difficulty of the device and improves the stability of the device through the modular spring operating mechanism; and reduces the time and power consumption of entering and exiting the car and improves the interchangeability of the device through the screw and nut structure propulsion mechanism.

[0005] To achieve the above purpose, the present invention provides the following solutions:

[0006] A railway single-phase circuit breaker, comprising: a modular spring operating mechanism, a frame, a current mutual inductance mechanism, a screw nut structure propulsion mechanism, a sealed pole, a first conductive contact arm, a first plum blossom contact, a second conductive contact arm, and a second plum blossom contact;

[0007] The modular spring operating mechanism is arranged inside the frame; the screw nut structure propulsion mechanism is arranged on the side of the outside of the frame close to the modular spring operating mechanism; the current mutual induction mechanism and the sealed pole are both fixed on the upper side of the frame; the first conductive contact arm is fixedly connected to the upper outlet position of the sealed pole; the first plum blossom contact is fixed to the side of the first conductive contact arm away from the sealed pole; the second conductive contact arm is enclosed inside the current mutual induction mechanism; the second conductive contact arm is fixedly connected to the lower outlet position of the sealed pole; the second plum blossom contact is fixed to the side of the second conductive contact arm away from the current mutual induction mechanism;

[0008] The modular spring operating mechanism is used to control the opening and closing of the sealed pole; the current mutual inductance mechanism is used to monitor the current value of the high-voltage side circuit; the screw nut structure propulsion mechanism is used to control the switching of the frame between the test position and the working position; the sealed pole is used to bear the high-voltage side circuit current and arc extinguishing protection; the first conductive contact arm is connected to the high-voltage incoming line terminal; the first plum blossom contact is used to engage with the preset static contact of the switch cabinet incoming line terminal; the second conductive contact arm is used to connect the high-voltage outgoing line terminal; the second plum blossom contact is used to engage with the preset static contact of the switch cabinet outgoing line terminal.

[0009] Preferably, it further comprises: an interlocking structure;

[0010] The interlocking structure is arranged inside the frame; the interlocking structure is connected to the modular spring operating mechanism;

[0011] The interlocking structure is used to control the preset circuit breaker to be unable to be closed during the pushing and swinging process, and to lock the screw nut structure propulsion mechanism when the preset circuit breaker is in the closed state.

[0012] The utility model discloses the following technical effects:

[0013] The utility model provides an encapsulation structure through a current mutual inductance mechanism and a second conductive contact arm, thereby improving the insulation performance and detection accuracy of the device; through a modular spring operating mechanism, the cost and maintenance difficulty of the device are reduced, and the stability of the device is improved; through a screw-nut structure propulsion mechanism, the time and power consumption of entering and exiting the vehicle are reduced, and the interchangeability of the device is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 A schematic structural diagram of a railway single-phase circuit breaker provided in an embodiment of the present utility model;

[0016] Description of reference numerals:

[0017] 1-spring operating mechanism, 2-frame, 3-current mutual induction mechanism, 4-screw nut structure propulsion mechanism, 5-sealed pole, 6-first conductive contact arm, 7-first plum blossom contact, 8-second plum blossom contact. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] The purpose of the utility model is to provide a railway single-phase circuit breaker, which improves the insulation performance and detection accuracy of the device through the encapsulation structure of the current mutual inductance mechanism and the second conductive contact arm; reduces the cost and maintenance difficulty of the device and improves the stability of the device through the modular spring operating mechanism; and reduces the time and power consumption of entering and exiting the car and improves the interchangeability of the device through the screw and nut structure propulsion mechanism.

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0021] Figure 1 A schematic diagram of the structure of a railway single-phase circuit breaker provided in an embodiment of the present utility model is shown in FIG. Figure 1 As shown, the utility model provides a railway single-phase circuit breaker, comprising: a modular spring operating mechanism 1, a frame 2, a current mutual inductance mechanism 3, a screw nut structure propulsion mechanism 4, a sealed pole 5, a first conductive contact arm 6, a first plum blossom contact 7, a second conductive contact arm and a second plum blossom contact 8;

[0022] The modular spring operating mechanism 1 is arranged inside the frame 2; the screw nut structure propulsion mechanism 4 is arranged on the outside of the frame 2 on a side close to the modular spring operating mechanism 1; the current mutual induction mechanism 3 and the sealed pole 5 are both fixed on the upper side of the frame 2; the first conductive contact arm 6 is fixedly connected to the upper outlet position of the sealed pole 5; the first plum blossom contact 7 is fixed to the side of the first conductive contact arm 6 away from the sealed pole 5; the second conductive contact arm is enclosed inside the current mutual induction mechanism 3; the second conductive contact arm is fixedly connected to the lower outlet position of the sealed pole 5; the second plum blossom contact 8 is fixed to the side of the second conductive contact arm away from the current mutual induction mechanism 3;

[0023] The modular spring operating mechanism 1 is used to control the opening and closing of the sealed pole 5; the current mutual inductance mechanism 3 is used to monitor the high-voltage side circuit current value; the screw nut structure propulsion mechanism 4 is used to control the switching of the frame 2 between the test position and the working position; the sealed pole 5 is used to bear the high-voltage side circuit current and arc extinguishing protection; the first conductive contact arm 6 is connected to the high-voltage incoming line terminal; the first plum blossom contact 7 is used to engage with the preset static contact of the switch cabinet incoming line terminal; the second conductive contact arm is used to connect the high-voltage outgoing line terminal; the second plum blossom contact 8 is used to engage with the preset static contact of the switch cabinet outgoing line terminal.

[0024] Preferably, it further comprises: an interlocking structure;

[0025] The interlocking structure is arranged inside the vehicle frame 2; the interlocking structure is connected to the modular spring operating mechanism 1;

[0026] The interlocking structure is used to control the preset circuit breaker to be unable to be closed during the pushing and swinging process, and to lock the screw nut structure propulsion mechanism 4 when the preset circuit breaker is in the closed state.

[0027] The beneficial effects of the utility model are as follows:

[0028] The utility model improves the insulation performance and detection accuracy of the device through the encapsulation structure of the current mutual inductance mechanism and the second conductive contact arm; reduces the cost and maintenance difficulty of the device and improves the stability of the device through the modular spring operating mechanism; reduces the time and power consumption of entering and exiting the vehicle and improves the interchangeability of the device through the screw and nut structure propulsion mechanism.

[0029] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0030] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A railway single-phase circuit breaker, characterized in that: include: Modular spring operating mechanism, frame, current mutual inductance mechanism, screw nut structure propulsion mechanism, sealed pole, first conductive contact arm, first plum blossom contact, second conductive contact arm and second plum blossom contact; The modular spring operating mechanism is arranged inside the frame; the screw nut structure propulsion mechanism is arranged on the side of the outside of the frame close to the modular spring operating mechanism; the current mutual induction mechanism and the sealed pole are both fixed on the upper side of the frame; the first conductive contact arm is fixedly connected to the upper outlet position of the sealed pole; the first plum blossom contact is fixed to the side of the first conductive contact arm away from the sealed pole; the second conductive contact arm is enclosed inside the current mutual induction mechanism; the second conductive contact arm is fixedly connected to the lower outlet position of the sealed pole; the second plum blossom contact is fixed to the side of the second conductive contact arm away from the current mutual induction mechanism; The modular spring operating mechanism is used to control the opening and closing of the sealed pole; the current mutual inductance mechanism is used to monitor the current value of the high-voltage side circuit; the screw nut structure propulsion mechanism is used to control the switching of the frame between the test position and the working position; the sealed pole is used to bear the high-voltage side circuit current and arc extinguishing protection; the first conductive contact arm is connected to the high-voltage incoming line terminal; the first plum blossom contact is used to engage with the preset static contact of the switch cabinet incoming line terminal; the second conductive contact arm is used to connect the high-voltage outgoing line terminal; the second plum blossom contact is used to engage with the preset static contact of the switch cabinet outgoing line terminal.

2. A railway single-phase circuit breaker according to claim 1, characterized in that: Also includes: interlocking structure; The interlocking structure is arranged inside the vehicle frame; The interlocking structure is connected to the modular spring operating mechanism; The interlocking structure is used to control the preset circuit breaker to be unable to be closed during the pushing and swinging process, and to lock the screw nut structure propulsion mechanism when the preset circuit breaker is in the closed state.

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