Auxiliary wiring device for dismounting metering equipment

Abstract

The utility model relates to an auxiliary wiring device for dismounting metering equipment, and the device comprises a pedestal which is provided with a groove which is used for accommodating a secondary side cable of a current transformer; the body is arranged towards the groove and detachably connected to the base, a movable short-circuit piece is arranged on the body, and a conductive puncture part is arranged on the side, towards the groove, of the short-circuit piece; wherein in the process that the short-circuit piece moves towards the base, the puncturing part can puncture the outer wrapping part of the secondary side cable, so that the secondary side cable is electrically connected to the short-circuit piece. According to the application, the short circuit of the secondary side loop of the current transformer can be realized, the power utilization operation is standard, the potential safety hazard is effectively reduced, and metering equipment, power utilization equipment and the like can be ensured to be uninterruptible.

Description

Technical Field

[0001] The utility model relates to the technical field of metering devices, in particular to an auxiliary wiring device for dismantling metering equipment. Background Art

[0002] With the aging of power facilities, technology upgrades, fault replacement and other reasons, regular maintenance and replacement of some metering equipment have become the norm. Among them, metering equipment includes data acquisition terminals, ammeters, distribution controllers and other equipment. In order to ensure that the power-consuming equipment is not disconnected when dismantling the metering equipment, the secondary circuit of the current transformer needs to be processed at this time. The correct isolation and short-circuiting of the secondary circuit is crucial to the personal safety of the operator. If it is not operated carelessly, it may lead to serious safety accidents such as live operation, short circuit, arc discharge, etc. In the process of dismantling traditional metering equipment, it is often necessary to cut off the power, or use some tools that do not meet the power specifications to short-circuit the secondary circuit wiring, which is easy to cause safety accidents and poses a major safety hazard. Utility Model Content

[0003] Based on the above description, the utility model provides an auxiliary wiring device for dismantling metering equipment to solve the problem of how to reduce the safety hazards of secondary circuit wiring operation of current transformer while ensuring that the metering equipment can be dismantled without power failure.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] An auxiliary wiring device for dismantling a metering device, comprising:

[0006] A base having a groove for accommodating a secondary side cable of the current transformer; and

[0007] A body, arranged toward the groove and detachably connected to the base, wherein a movable short-circuit is provided on the body, and a conductive puncture portion is provided on a side of the short-circuit facing the groove;

[0008] Wherein, during the movement of the short-circuit piece toward the base, the piercing portion can pierce the outer package of the secondary-side cable, so that the secondary-side cable is electrically connected to the short-circuit piece.

[0009] In one or more embodiments, the puncture portion is configured as a puncture blade or a puncture needle.

[0010] In one or more embodiments, the body comprises:

[0011] A housing having a first cavity and an opening communicating with the first cavity; and

[0012] A handle, which passes through a side of the shell away from the opening and is movably connected to the shell;

[0013] Wherein, at least a portion of the short-circuit is disposed in the first cavity and connected to one end of the handle; when the handle moves toward the shell, the short-circuit is driven to move toward the base through the opening so that the puncture portion abuts against the side wall of the secondary cable.

[0014] In one or more embodiments, the handle is threadedly connected to the housing; or

[0015] The handle is threadedly connected to the short-connector.

[0016] In one or more embodiments, the auxiliary wiring device further comprises two elastic members, the elastic members are connected to the inner wall of the housing near the opening, and the two elastic members are arranged opposite to each other;

[0017] In which, the elastic part includes a pressing part and a snap-on part connected to each other, the pressing part is elastically connected to the inner wall of the shell, the pressing part passes through the side wall of the shell, and part of the snap-on part extends out of the opening; two limiting openings are provided on a side of the base facing the short-circuit member, and each limiting opening is used to snap-on with one of the snap-on parts; in the process of both the pressing parts being displaced toward the first cavity, the two snap-on parts can be detached from the two limiting openings.

[0018] In one or more embodiments, the base has a second cavity, and a battery module is disposed in the second cavity of the base; a contact portion is disposed on a side of the base facing the short-circuit member, and the contact portion is electrically connected to the battery module;

[0019] A power supply connection portion is provided on a side of the short-circuit member facing the base; during the movement of the short-circuit member toward the base, the power supply connection portion contacts the contact portion to energize the short-circuit member.

[0020] In one or more embodiments, the short-circuit has a third cavity, and a circuit board is disposed in the third cavity of the short-circuit. The circuit board is used to form a loop with the secondary side cable through the puncture portion.

[0021] In one or more embodiments, the groove is configured as a V-shaped groove, a semicircular groove or an arc groove; and / or

[0022] There are two grooves and two puncture parts, and each puncture part is located in one groove.

[0023] In one or more embodiments, two sets of recesses are provided on the side wall of the short-circuiting member facing the base, each set of recesses is aligned with one of the grooves, and a limiting hole is defined between the recess and the groove, and the limiting hole is used to limit the secondary side cable.

[0024] In one or more embodiments, the auxiliary wiring device further includes a warning lamp, which is provided on the body and electrically connected to the short-circuiting member, and the warning lamp is used to indicate that the secondary side cable of the current transformer is successfully short-circuited with the short-circuiting member.

[0025] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects:

[0026] By providing a detachable base and body, the secondary side cable of the current transformer can be clamped on the groove of the base, and a movable short-circuiting member is provided on the body. During the process of the short-circuiting member moving towards the groove, the piercing portion on the short-circuiting member can pierce the outer wrapping part of the secondary side cable, so that the secondary side cable is electrically connected to the short-circuiting member, thereby realizing the short-circuit of the secondary side circuit of the current transformer. This not only complies with electrical operation specifications, effectively reduces potential safety hazards, but also ensures that metering devices, electrical equipment, etc. are not powered off. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 FIG. is an exploded structural schematic diagram of an auxiliary wiring device for removing a metering device provided by an embodiment of the present application;

[0028] Figure 2 is Figure 1 an enlarged schematic view of a partial area A in FIG.

[0029] Figure 3 is Figure 1 an overall schematic view of the auxiliary wiring device in FIG.

[0030] Figure 4 is Figure 3 a cross-sectional schematic view of the auxiliary wiring device in FIG. along the section line B-B.

[0031] MARKING DESCRIPTION:

[0032] Auxiliary wiring device 10;

[0033] Base 11, groove 11a, limiting opening 11b, battery module 111, cover 112;

[0034] Body 12, housing 121, handle 122, opening t;

[0035] Short-circuiting member 13, piercing portion 131, power supply connection portion 132, bottom plate 133, recess 134;

[0036] Elastic member 14, pressing portion 141, buckling portion 142;

[0037] First cavity k1, second cavity k2;

[0038] Secondary side cable 20. Specific implementation manner

[0039] For ease of understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. Embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided so that the disclosure of the present application is more thorough and comprehensive.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the specification of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0041] It can be understood that spatial relationship terms such as "under", "below", "lower", "beneath", "above", "upper", etc. can be used herein to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that in addition to the orientation shown in the figure, spatial relationship terms also include different orientations of the device during use and operation. For example, if the device in the figure is flipped, the element or feature described as "under other elements" or "beneath it" or "under it" will be oriented "above" other elements or features. Therefore, the exemplary terms "under" and "below" can include both the upper and lower orientations. In addition, the device can also include other orientations (such as rotating 90 degrees or other orientations), and the spatial descriptive terms used herein are accordingly interpreted.

[0042] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediate element. In the following embodiments, "connection", if there is an electrical signal or data transfer between the connected circuits, modules, units, etc., should be understood as "electrical connection", "communication connection", etc.

[0043] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprises / comprising", "has / including", etc. specify the presence of the stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

[0044] Figure 1 FIG. 4 shows an exploded schematic view of an auxiliary wiring device for removing a metering device provided by an embodiment of the present application; Figure 2 shows Figure 1 an enlarged schematic view of a partial area A in FIG. 4; Figure 3 shows Figure 1 an overall schematic view of the auxiliary wiring device in FIG. 4; Figure 4 shows Figure 3 a sectional view of the auxiliary wiring device in FIG. 4 along the section line B-B. For the sake of clarity, only the parts related to this embodiment are shown.

[0045] Referring to Figures 1 to 4 , an embodiment of the present application provides an auxiliary wiring device 10 for removing a metering device, including a base 11 and a body 12. The base 11 is provided with a groove 11a for accommodating the secondary side cable 20 of a current transformer. The body 12 faces the groove 11a and is detachably connected to the base 11. The body 12 is provided with a movable short-circuiting member 13, and one side of the short-circuiting member 13 facing the groove 11a is provided with a conductive puncturing portion 131. Wherein, during the process of the short-circuiting member 13 moving towards the base 11, the puncturing portion 131 can puncture the outer wrapping portion of the secondary side cable 20, so that the secondary side cable 20 is electrically connected to the short-circuiting member 13.

[0046] It should be noted that a current transformer is an instrument that converts a large current on the primary side into a small current on the secondary side for measurement. There are multiple secondary side cables 20 on the current transformer, which are connected to the metering device through a terminal block and a concentrator. The outer wrapping portion of the secondary side cable is an insulating sheath. In this embodiment, in order to ensure that the metering device and the user equipment are not powered off, it is necessary to short-circuit the secondary side cable 20.

[0047] In the embodiment of the present application, a detachably connected base 11 and a main body 12 are provided so that the secondary side cable 20 of the current transformer can be clamped on the groove 11a of the base 11, and a movable short-circuit 13 is provided on the main body 12. When the short-circuit 13 moves toward the groove 11a, the puncture portion 131 on the short-circuit 13 can pierce the outer package of the secondary side cable 20, so that the secondary side cable 20 is electrically connected to the short-circuit 13, so that the secondary side circuit of the current transformer can be quickly and reliably short-circuited and grounded before the metering equipment is removed, ensuring that the secondary circuit is always in a safe state during the operation, preventing accidental electrification from causing safety accidents, not only standardizing the electricity operation and effectively reducing safety hazards, but also ensuring that the metering equipment, power-consuming equipment, etc. are not disconnected. In addition, the auxiliary wiring device of this embodiment makes the wiring process of the secondary side circuit of the current transformer simpler and faster, greatly reducing the operation time and improving the work efficiency, especially in the occasions where the metering equipment needs to be frequently replaced or repaired, this quick wiring function is particularly important.

[0048] Continue reading Figure 2 and Figure 4 In some embodiments, the puncture portion 131 is configured as a puncture blade or a puncture needle. Specifically, the puncture blade may be in the shape of a V-shaped blade or a conical blade. In this way, when the short-circuit 13 moves toward the groove 11a, the puncture portion 131 can quickly scratch or pierce the insulating sheath of the secondary cable 20, so that the puncture portion 131 contacts the wire of the secondary cable 20, thereby achieving the short circuit of the secondary cable 20.

[0049] Furthermore, the puncture portion 131 may be detachably connected to the short-circuit component 13 to facilitate replacement of the puncture portion 131 .

[0050] Continue reading Figure 1 and Figure 4 In some embodiments, the body 12 includes a shell 121 and a handle 122, which has a first cavity k1 and an opening t that penetrates the first cavity k1; the handle 122 penetrates the side of the shell 121 away from the opening t, and is movably connected to the shell 121; wherein, at least a portion of the short-circuit 13 is disposed in the first cavity k1 and is connected to one end of the handle 122; in the process of the handle 122 moving toward the shell 121, the short-circuit 13 is driven to move toward the base 11 through the opening t, so that the puncture portion 131 abuts against the side wall of the secondary cable 20. In this way, the operator only needs to operate the handle 122 to puncture the secondary cable 20 with the puncture portion 131, thereby realizing the short circuit between the secondary cable 20 and the short-circuit 13, which is not only convenient and efficient, but also safe to operate.

[0051] In some embodiments, the handle 122 is threadedly connected to the housing 121. Alternatively, the handle 122 is threadedly connected to the jumper 13. In this way, during the process of the operator rotating the handle 122, the handle 122 can be moved towards the housing 121, driving the jumper 13 towards the groove 11a, so that the piercing portion 131 abuts against or even pierces the insulation sheath of the secondary side cable 20. In addition, during the process of the operator rotating the handle 122, the handle 122 can also be moved away from the housing 121 to drive the jumper 13 to separate the piercing portion 131 from the secondary side cable 20. The operation is convenient, efficient, and highly feasible.

[0052] Continue to refer to Figure 1 and Figure 4 As shown in FIGS. and, in some embodiments, the auxiliary wiring device 10 further includes two elastic members 14. The elastic members 14 are connected to the inner wall of the housing 121 near the opening t, and the two elastic members 14 are arranged oppositely. The elastic member 14 includes a pressing portion 141 and a buckling portion 142 connected to each other. The pressing portion 141 is elastically connected to the inner wall of the housing 121, and the pressing portion 141 penetrates through the side wall of the housing 121. A part of the buckling portion 142 extends out of the opening t. Two limiting openings 11b are provided on one side surface of the base 11 facing the jumper 13, and each limiting opening 11b is used for clamping with a buckling portion 142. During the process that the two pressing portions 141 both shift towards the first cavity k1, the two buckling portions 142 can be disengaged from the two limiting openings 11b. In this way, the operator presses the pressing portions 141 of the two elastic members 14 to move the two buckling portions 142 closer to the first cavity k1, and can easily insert the two buckling portions 142 into the corresponding two limiting openings 11b. Then, after releasing the hand, the end of the buckling portion 142 can be clamped in the limiting opening 11b to realize the assembly of the base 11 and the body 12, avoiding the reverse installation of the base 11 and the body 12, and playing an anti-fooling role. In addition, the operator presses the pressing portions 141 of the two elastic members 14 to move the two buckling portions 142 closer to the first cavity k1, and can easily withdraw the two buckling portions 142 from the two limiting openings 11b to realize the disassembly of the base 11 and the body 12.

[0053] Continue to refer to Figure 1 and Figure 4 As shown in FIGS. and, in some embodiments, the base 11 has a second cavity k2, and a battery module 111 is provided in the second cavity k2 of the base 11. A contact portion (not shown in the figure) is provided on one side surface of the base 11 facing the jumper 13, and the contact portion is electrically connected to the battery module 111. A power supply connection portion 132 is provided on one side surface of the jumper 13 facing the base 11. During the process that the jumper 13 moves towards the base 11, the power supply connection portion 132 contacts the contact portion to make the jumper 13 energized. In this way, the battery module 111 can supply power to the jumper 13 to realize the short circuit of the secondary side cable 20 of the current transformer by the jumper 13.

[0054] Further, continue to refer to Figure 1 , a USB interface is provided on the base 11, and the battery module 111 can be charged through the USB interface. In addition, the second cavity k2 can be regarded as a battery compartment, and a detachable cover 112 is provided on the base 11 to realize the detachable and replaceable operation of the battery module 111.

[0055] In some embodiments, the shorting member 13 has a third cavity (not shown in the figure), and a circuit board is provided in the third cavity of the shorting member 13. The circuit board is used to form a loop with the secondary side cable 20 through the piercing portion 131. Thus, by providing the circuit board, the shorting function of the shorting member 13 to the secondary side cable 20 is realized.

[0056] Continue to refer to Figure 1 , Figure 2 and Figure 4 , in some embodiments, a bottom plate 133 is provided on one side of the shorting member 13 facing the base 11. The shorting member 13 is detachably connected to the housing 121 by screwing means with the help of the bottom plate 133, and at the same time, both the buckle portion 142 and the piercing portion 131 can pass through the bottom plate 133. Thus, the circuit board inside the shorting member 13 is protected by the bottom plate 133, playing a role in dustproof and waterproof.

[0057] Continue to refer to Figure 2 and Figure 4 , in some embodiments, the groove 11a is configured as a V-shaped groove, a semi-circular groove or an arc-shaped groove. Thus, the groove 11a accommodates the secondary side cable 20 of the current transformer and can limit the side wall of the secondary side cable 20, so as to reduce the situation of deviation and sliding of the secondary side cable 20 during the process of the piercing portion 131 piercing the secondary side cable 20.

[0058] Continue to refer to Figure 1 and Figure 4 , in some embodiments, both the groove 11a and the piercing portion 131 are provided with two, and each piercing portion 131 is opposite to one groove 11a. Thus, the auxiliary wiring device 10 can perform a shorting operation on two secondary side cables 20 at one time.

[0059] Continue to refer to Figure 1 , Figure 2 and Figure 4, in some embodiments, the jumper 13 is provided with two sets of recesses 134 on the side wall facing the base 11. Each set of recesses 134 is aligned with a groove 11a, and a limiting hole (not shown in the figure) is defined between the recess 134 and the groove 11a. The limiting hole is used to limit the secondary side cable 20. Specifically, a bottom plate 133 is provided on the side of the jumper 13 facing the base 11. Two sets of recesses 134 are provided on the bottom plate 133. Each set of recesses 134 has two recesses 134. Each set of recesses 134 is aligned with a groove 11a. A limiting hole is defined between each recess 134 and the corresponding groove 11a. The side wall of the secondary side cable 20 is limited through the limiting hole. Further, a recess can be provided on the piercing portion 131, and a blade or a piercing needle can be provided on the recess. The recess on the piercing portion 131 can also play a role in limiting the secondary side cable 20. In this way, during the process of the piercing portion 131 piercing the secondary side cable 20, the situation of the secondary side cable 20 shifting or sliding can be reduced, so as to facilitate the piercing portion 131 to quickly pierce the insulating sheath of the secondary side cable 20.

[0060] In some embodiments, the auxiliary wiring device 10 further includes a warning lamp (not shown in the figure). The warning lamp is provided on the body 12 and is electrically connected to the jumper 13. The warning lamp is used to indicate that the secondary side cable 20 of the current transformer and the jumper 13 are successfully short-circuited. Specifically, the warning lamp can be provided on the surface of the housing 121, or the housing 121 can be made into a transparent structure. The warning lamp is provided in the first cavity k1. The warning lamp is electrically connected to the circuit board of the jumper 13. In this way, during the process of the operator rotating the handle 122, by observing the warning lamp, it can be determined that the secondary side cable 20 of the current transformer is successfully short-circuited, and thus the rotation of the handle 122 can be stopped.

[0061] In summary, in the embodiment of the present application, by providing a detachable base 11 and a body 12, it is convenient to clamp the secondary side cable 20 of the current transformer on the groove 11a of the base 11. A movable short-circuiting member 13 is provided on the body 12. During the process of the short-circuiting member 13 moving towards the groove 11a, the piercing portion 131 on the short-circuiting member 13 can pierce the outer wrapping part of the secondary side cable 20, so that the secondary side cable 20 is electrically connected to the short-circuiting member 13. Thus, the secondary side circuit of the current transformer can be quickly and reliably short-circuited and grounded before the metering device is removed, ensuring that the secondary circuit is always in a safe state during the operation process, preventing safety accidents caused by accidental electrification. It not only standardizes the electricity use operation, effectively reduces potential safety hazards, but also can ensure that the metering device, electrical equipment, etc. are not powered off. In addition, through the auxiliary wiring device 10 of this embodiment, the wiring process of the secondary side circuit of the current transformer is made more simple and fast, greatly reducing the operation time and improving the work efficiency. Especially in the occasions where the metering device needs to be frequently replaced or overhauled, this fast wiring function is particularly important. In addition, in view of the narrow installation position and complex environment of the current transformer, etc., the auxiliary wiring device 10 is designed to be portable and compact, with flexible operation and easy wiring operation in a limited space. The device can be quickly disassembled and assembled through the elastic members 14 on both sides for the base 11 and the body 12. The short-circuiting member 13 inside the housing 121 is pushed by the rotating handle 122 at the upper end, so that the two piercing portions 131 can successfully pierce the secondary side cable and short-circuit it, further enhancing its applicability under complex working conditions.

[0062] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An auxiliary wiring device for a metering device, characterized in that: include: A base having a groove, wherein the groove is used to accommodate a secondary side cable of the current transformer; and A body, arranged toward the groove and detachably connected to the base, wherein a movable short-circuit is provided on the body, and a conductive puncture portion is provided on a side of the short-circuit facing the groove; Wherein, during the movement of the short-circuit piece toward the base, the piercing portion can pierce the outer package of the secondary-side cable, so that the secondary-side cable is electrically connected to the short-circuit piece.

2. The auxiliary wiring device for metering equipment according to claim 1, characterized in that: The puncture part is configured as a puncture blade or a puncture needle.

3. The auxiliary wiring device for metering equipment according to claim 1, characterized in that: The body comprises: A housing having a first cavity and an opening communicating with the first cavity; and A handle, which passes through a side of the shell away from the opening and is movably connected to the shell; At least part of the short-circuit is disposed in the first cavity and connected to one end of the handle; when the handle moves toward the shell, the short-circuit is driven to move toward the base through the opening so that the puncture portion abuts against the side wall of the secondary cable.

4. The auxiliary wiring device for metering equipment according to claim 3, characterized in that: The handle is threadedly connected to the housing; or The handle is threadedly connected to the short-connector.

5. The auxiliary wiring device for metering equipment according to claim 3, characterized in that: The auxiliary wiring device further comprises two elastic members, the elastic members are connected to the inner wall of the housing near the opening, and the two elastic members are arranged opposite to each other; In which, the elastic part includes a pressing part and a snap-on part connected to each other, the pressing part is elastically connected to the inner wall of the shell, and the pressing part passes through the side wall of the shell, and part of the snap-on part extends out of the opening; two limiting openings are provided on a side of the base facing the short-circuit component, and each limiting opening is used to snap-on with one of the snap-on parts; in the process of the two pressing parts being displaced toward the first cavity, the two snap-on parts can be detached from the two limiting openings.

6. The auxiliary wiring device for metering equipment according to any one of claims 1 to 5, characterized in that: The base has a second cavity, and a battery module is arranged in the second cavity of the base; a contact portion is arranged on a side of the base facing the short-circuit member, and the contact portion is electrically connected to the battery module; A power supply connection portion is provided on a side of the short-circuit member facing the base; during the movement of the short-circuit member toward the base, the power supply connection portion contacts the contact portion to energize the short-circuit member.

7. The auxiliary wiring device for metering equipment according to any one of claims 1 to 5, characterized in that: The short-circuit component has a third cavity. A circuit board is arranged in the third cavity of the short-circuit component. The circuit board is used to form a loop with the secondary side cable through the puncture portion.

8. The auxiliary wiring device for metering equipment according to any one of claims 1 to 5, characterized in that: The groove is configured as a V-shaped groove, a semicircular groove or an arc groove; and / or There are two grooves and two puncture parts, and each puncture part is located in one groove.

9. The auxiliary wiring device for metering equipment according to claim 8, characterized in that: The side wall of the short-circuit piece facing the base is provided with two groups of recesses, each group of the recesses is located opposite to one of the grooves, and a limiting hole is defined between the recesses and the groove, and the limiting hole is used to limit the secondary side cable.

10. The auxiliary wiring device for metering equipment according to any one of claims 1 to 5, characterized in that: The auxiliary wiring device also includes a warning light, which is arranged on the main body and electrically connected to the short-circuit component. The warning light is used to indicate that the secondary side cable of the current transformer and the short-circuit component are short-circuited successfully.

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