A low-voltage isolating switch device for preventing misoperation of the neutral line phase

Abstract

The present invention discloses a low-voltage isolating switch device for preventing misoperation of a neutral line phase, comprising a low-voltage isolating base, two low-voltage isolating insulators, a low-voltage isolating power supply side terminal, a low-voltage isolating load side terminal, a low-voltage isolating operating movable contact and a locking structure, wherein the bottom ends of the two low-voltage isolating insulators are respectively fixed to the two sides of the low-voltage isolating base, the low-voltage isolating power supply side terminal is fixed to the top of one of the low-voltage isolating insulators, the low-voltage isolating load side terminal is fixed to the top of the other low-voltage isolating insulator, one end of the low-voltage isolating operating movable contact is hingedly connected to the low-voltage isolating load side terminal, and the other end thereof is movably connected to the low-voltage isolating power supply side terminal, and the locking structure is movably arranged at the travel section where the low-voltage isolating operating movable contact is connected to the low-voltage isolating power supply side terminal. The present invention does not affect the safe operation of the equipment, realizes the effective locking of the neutral line phase of the low-voltage isolating switch, and prevents the burning of the user equipment caused by pulling the neutral line first during the power outage operation.

Description

Technical Field

[0001] The invention relates to the field of low-voltage isolating switches, and in particular to a low-voltage isolating switch device capable of preventing misoperation of a neutral line phase. Background Art

[0002] The existing low-voltage isolating switches are widely used in the operation of rural power distribution. At present, the rural power distribution system still relies on low-voltage isolating switches as the operating switches for power outages. The operating manual for power outages only simply states to open or close the isolating switches, but fails to specify which phase to close or open. This can easily cause operators to open the neutral phase first during a power outage, causing accidents that burn out user equipment. The main reason for these problems is that the neutral phase of the low-voltage isolating switch does not have a corresponding locking device, which poses a greater risk of misoperation.

[0003] In the rural power distribution system, low-voltage isolating switches are still used as the operating switches for power outages, and there is no locking device for the neutral phase, which easily leads to the risk of stopping the neutral phase first during the power outage operation. (It is strictly forbidden to stop the neutral phase first in the anti-misoperation sequence).

[0004] As the neutral line of the low-voltage disconnector has no locking device, manual binding of the neutral line is adopted in the operation of rural power distribution. This requires climbing up to untie the wires before operation, which creates new operational risks and reduces work efficiency. Summary of the invention

[0005] The main purpose of the present invention is to provide a low-voltage isolating switch device with a neutral line phase protection against misoperation, aiming to overcome the above problems.

[0006] To achieve the above-mentioned purpose, the present invention proposes a low-voltage isolating switch device with a neutral line phase protection against misoperation, comprising a low-voltage isolation base, two low-voltage isolation insulators, a low-voltage isolation power supply side terminal, a low-voltage isolation load side terminal, a low-voltage isolation operating moving contact and a locking structure, wherein the bottom ends of the two low-voltage isolation insulators are respectively fixed to the two sides of the low-voltage isolation base, the low-voltage isolation power supply side terminal is fixed to the top of one of the low-voltage isolation insulators, and the low-voltage isolation load side terminal is fixed to the top of the other low-voltage isolation insulator, one end of the low-voltage isolation operating moving contact is hingedly connected to the low-voltage isolation load side terminal, and the other end thereof is movably connected to the low-voltage isolation power supply side terminal, and the locking structure is movably arranged in the travel section where the low-voltage isolation operating moving contact connects the low-voltage isolation power supply side terminal.

[0007] Preferably, the locking structure includes a fixing part, a snap-fit ​​device and a spring bolt, the height of which is greater than the low-voltage isolation power supply side terminal. The bottom end of the fixing part is fixed to the low-voltage isolation base close to the low-voltage isolation power supply side terminal. The spring bolt is arranged at the intersection of the travel of the fixing part and the low-voltage isolation operating moving contact connecting the low-voltage isolation power supply side terminal, and is fixed on the fixing part. The snap-fit ​​device is hingedly connected to the fixing part with the spring bolt as the hinge point.

[0008] Preferably, the buckle device is provided with a hinge through hole matched with the spring bolt and an operating through hole for operating the locking structure.

[0009] The locking mechanism of the present invention adopts a simple locking structure and is installed on the neutral line phase power supply side of the low-voltage disconnector. The operator can easily complete the locking and releasing of the moving contact of the disconnector by standing on the ground, effectively preventing the risk of erroneous operation of pulling the neutral line first during a power outage. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 the structures shown in these drawings without paying creative work.

[0011] Figure 1 It is a structural schematic diagram of the locking structure of an embodiment of a low-voltage disconnecting switch device for preventing misoperation of the neutral line phase of the present invention when the device is closed;

[0012] Figure 2 It is a structural schematic diagram of the locking structure of an embodiment of a low-voltage disconnecting switch device for preventing misoperation of the neutral phase of the present invention when the switch is open;

[0013] 1-low-voltage isolating knife switch base; 2-low-voltage isolating knife switch insulator; 3-low-voltage isolating knife switch power supply side terminal; 4-low-voltage isolating knife switch load side terminal; 5-low-voltage isolating knife switch operating moving contact; 6-clamp device; 61-hinge through hole; 62-operation through hole; 7-spring bolt; 8-fixing part.

[0014] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0015] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0016] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0017] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0018] like Figure 1 As shown, a low-voltage isolating switch device for preventing misoperation of the neutral line phase proposed by the present invention comprises a low-voltage isolation base 1, two low-voltage isolation insulators 2, a low-voltage isolation power supply side terminal 3, a low-voltage isolation load side terminal 4, a low-voltage isolation operating moving contact 5 and a locking structure, the bottom ends of the two low-voltage isolation insulators 2 are respectively fixed to the two sides of the low-voltage isolation base 1, the low-voltage isolation power supply side terminal 3 is fixed to the top of one of the low-voltage isolation insulators 2, the low-voltage isolation load side terminal 4 is fixed to the top of the other low-voltage isolation insulator 2, one end of the low-voltage isolation operating moving contact 5 is hingedly connected to the low-voltage isolation load side terminal 4, and the other end thereof is movably connected to the low-voltage isolation power supply side terminal 3, and the locking structure is movably arranged in the travel section where the low-voltage isolation operating moving contact 5 is connected to the low-voltage isolation power supply side terminal 3.

[0019] Preferably, the locking structure includes a fixing part 8, a snap-fit ​​device 6 and a spring bolt 7, the height of which is greater than the low-voltage isolation power supply side terminal, the bottom end of the fixing part 8 is fixed to the low-voltage isolation base 1 close to the low-voltage isolation power supply side terminal; the spring bolt 7 is arranged at the intersection of the travel of the fixing part 8 and the low-voltage isolation operating moving contact 5 connecting the low-voltage isolation power supply side terminal 3, and is fixed on the fixing part 8; the snap-fit ​​device 6 is hingedly connected to the fixing part 8 with the spring bolt 7 as the hinge point.

[0020] Preferably, the buckle device 6 is provided with a hinge through hole 61 matched with the spring bolt 7 and an operating through hole 62 for operating the locking structure.

[0021] In the embodiment of the present invention, the locking structure in this case is simple in structure and easy to operate. It is installed on the neutral line phase power supply side of the low-voltage disconnector. The operator can easily complete the locking and releasing of the moving contact of the disconnector by standing on the ground, effectively preventing the risk of misoperation of pulling the neutral line first during a power outage.

[0022] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A low-voltage isolating switch device for preventing misoperation of the neutral phase, characterized in that: It includes a low-voltage isolation base, two low-voltage isolation insulators, a low-voltage isolation power supply side terminal, a low-voltage isolation load side terminal, a low-voltage isolation operation moving contact and a locking structure, wherein the bottom ends of the two low-voltage isolation insulators are respectively fixed to the two sides of the low-voltage isolation base, the low-voltage isolation power supply side terminal is fixed to the top of one of the low-voltage isolation insulators, and the low-voltage isolation load side terminal is fixed to the top of the other low-voltage isolation insulator, one end of the low-voltage isolation operation moving contact is hingedly connected to the low-voltage isolation load side terminal, and the other end thereof is movably connected to the low-voltage isolation power supply side terminal, and the locking structure is movably arranged at the travel section where the low-voltage isolation operation moving contact is connected to the low-voltage isolation power supply side terminal; The locking structure includes a fixing piece, a buckle device and a spring bolt, the bottom end of which is fixed to a low-voltage isolation base close to the low-voltage isolation power supply side terminal; the spring bolt is arranged at the intersection of the fixing piece and the travel of the low-voltage isolation operation moving contact connecting the low-voltage isolation power supply side terminal, and is fixed to the fixing piece; the buckle device is hingedly connected to the fixing piece with the spring bolt as a hinge point; The buckle device is provided with a hinge through hole matched with the spring bolt and an operation through hole for operating the locking structure.

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