Electricity meter non-power-cut meter replacement operation and maintenance system

Abstract

The invention relates to an ammeter non-power-cut meter replacement operation and maintenance system, which comprises a non-power-cut meter replacement device connected in parallel with a to-be-replaced electric energy meter, and inlet / outlet cables of the non-power-cut meter replacement device are respectively matched with two wiring terminals in a one-to-one corresponding plugging manner; one end of the second jacket is rotationally connected to the outer wall of the first jacket, and internal threads at the other end are in threaded connection fit with external threads of the third jacket; according to the invention, when the non-power-cut meter replacing device connected in parallel with the to-be-replaced electric energy meter is constructed, the device is electrically connected with an incoming cable and an outgoing cable through a wiring terminal; the second jacket is relatively rotated to enable the first jacket and the third jacket to be far away from each other, so that the cut opening of the cable insulation layer is expanded; the electric connection assembly has an on-off characteristic, is disconnected with a cable conductor when not in use in daily life, is safer when being not electrified, and is in a closed state only when a wiring plug matched with the key slot is inserted, so that irrelevant personnel are prevented from maliciously taking electric energy.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power systems, and in particular to an operation and maintenance system for replacing electric meters without power outage. Background Art

[0002] At present, a large number of direct-type energy meters in operation must be replaced periodically according to the national mandatory verification requirements for measuring instruments. During the periodic rotation process, customers will suffer short-term power outages. In order to ensure that there is no temporary interruption in power supply, there is a need to replace energy meters without power outages.

[0003] For example, patent publication number CN116679101A discloses "a novel portable non-stop meter changing device and method", which constructs a parallel bypass from the inlet and outlet switches of the meter box to achieve non-stop meter changing, so that residents no longer need to turn off high-power electrical appliances in their homes when changing meters.

[0004] Usually, it is necessary to destroy the insulation layer of the wire when constructing a parallel bypass. After the insulation layer of the wire is damaged, it is usually repaired with tape or other methods. Such repair methods have low safety. In addition, it is troublesome to destroy the insulation layer of the wire again when replacing the electric energy meter later. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an operation and maintenance system and construction method for replacing an electric meter without power outage to solve the above problems.

[0006] The present invention provides the following technical solutions:

[0007] A non-stop power-off meter replacement operation and maintenance system for electric meters, comprising a non-stop power-off meter replacement device connected in parallel with an electric energy meter to be replaced, and connection terminals respectively connected to an incoming cable and an outgoing cable of the electric energy meter to be replaced, wherein the incoming cable and the outgoing cable of the non-stop power-off meter replacement device are respectively plugged and matched with two connection terminals in a one-to-one correspondence;

[0008] The terminal comprises a first jacket, a second jacket and a third jacket, wherein the first jacket and the third jacket are sleeved and fixed on the outer wall of the incoming cable and / or the outgoing cable;

[0009] One end of the second jacket is rotatably connected to the outer wall of the first jacket, and the internal thread of the other end is threadably connected and matched with the external thread of the third jacket;

[0010] The second jacket comprises two second half jackets, a cutter is arranged in the middle of the inner side walls of the two second half jackets, the two second half jackets are spliced ​​together into one body and are sleeved on the outer wall of the incoming cable and / or the outgoing cable, during which the cutter cuts the insulation layer of the incoming cable / outgoing cable.

[0011] Preferably, an electrical connection component with a switch is provided at a position corresponding to the internal thread on the second half jacket, an inner wall of the second half jacket is connected to a conductive block via a conductive elastic member, and the electrical connection component is electrically connected to the conductive elastic member.

[0012] Preferably, the electrical connection component includes a key slot, and the free end of the incoming cable / outgoing cable of the non-stop meter changing device is provided with a wiring plug, the outer contour of the wiring plug is adapted to the key slot; the wiring plug is inserted into or out of the key slot to realize the connection and disconnection of the electrical connection component and the conductive elastic member.

[0013] Preferably, the electrical connection assembly includes a row of pins, a return spring connected to the pins one by one, and a carbon brush is fixedly arranged between two adjacent pins;

[0014] The outermost marble in a row of marbles is made of conductive material, the remaining marbles are made of insulating material and are provided with conductive parts, and carbon brushes are fixedly provided between adjacent marbles;

[0015] When the wiring plug is inserted into the key slot, the wiring plug is electrically connected to the conductive elastic member through the pin, the carbon brush and the conductive part made of conductive material.

[0016] Preferably, the first jacket comprises two first half jackets, which are spliced ​​together to form an integral whole; the third jacket comprises two third half jackets, which are spliced ​​together to form an integral whole.

[0017] Preferably, a one-way snap-fitting groove and a snap-fitting hook are respectively provided on one side where the two first half jackets / second half jackets / third half jackets abut against each other.

[0018] Preferably, a liquid injection port is provided on the second half jacket.

[0019] Preferably, the height of the second half jacket increases linearly from the inner side wall of the second half jacket to the other end.

[0020] Preferably, the inner side walls of the first jacket and the third jacket are provided with a sealing layer.

[0021] Preferably, a switch is provided between the wiring terminal and the input / output terminal of the electric energy meter to be replaced.

[0022] The present invention has the following beneficial technical effects:

[0023] When the present invention constructs a non-stop meter replacement device connected in parallel with the electric energy meter to be replaced, it is electrically connected to the incoming cable and the outgoing cable through the wiring terminal; and the wiring terminal is composed of a first, a second, and a third jacket. When the second jacket is sleeved on the outer wall of the cable, the insulating layer is cut by a cutter, and then the second jacket is relatively rotated to make the first and third jackets move away from each other, so that the opening of the cable insulation layer is expanded; this cable insulation layer opening is relatively located inside the second jacket to avoid the risk of electric shock.

[0024] The non-stop meter replacement device is electrically connected to the cable through a wiring plug and an opening in the cable insulation layer.

[0025] Insulating resin can be injected into the first, second and third jackets through the injection port, so that the first, second and third jackets and the cable are fixedly connected together.

[0026] The electrical connection component has an on-off feature. It is disconnected from the cable conductor when not in use, making it safer without power. The electrical connection component is in a closed state only when a wiring plug matching the key slot is inserted, preventing unauthorized use of electricity by unauthorized personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the structure of the wiring terminal of the present invention;

[0029] Figure 3 It is a schematic diagram of the first jacket structure of the present invention;

[0030] Figure 4 is a schematic diagram of the second jacket structure of the present invention;

[0031] Figure 5 It is a schematic diagram of the third jacket structure of the present invention;

[0032] Figure 6 is a cross-sectional view of the second half jacket of the present invention;

[0033] Figure 7 It is a schematic diagram of the structure of some electrical connection components of the present invention;

[0034] Figure 8 It is a schematic diagram of the cutter structure of the present invention;

[0035] Fig. 9 It is a schematic diagram of the wiring plug structure of the present invention.

[0036] The reference numerals in the figure are:

[0037] 100. Electric energy meter to be replaced; 101. Switch; 200. Meter replacement device without power outage; 300. Wiring terminal; 400. Wiring plug;

[0038] 1. first jacket; 11. first half jacket; 12. limiting ring groove; 2. second jacket; 3. third jacket; 31. third half jacket; 32. external thread;

[0039] 21. Second half jacket; 22. Internal thread; 23. Cutter; 24. Limiting ring block; 25. Electrical connection assembly; 26. Liquid injection port; 27. Conductive elastic member; 28. Conductive block;

[0040] 251. key slot; 252. pin; 253. conductive part; 254. carbon brush; 255. return spring. DETAILED DESCRIPTION

[0041] 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.

[0042] In the prior art, the use of piercing splitters is only suitable for use in some low-load situations. Although the piercing splitters can basically not damage the insulation layer of the wire, the wire insulation layer has a relatively thin wire diameter and is not suitable for use in situations with high current and high load.

[0043] Example

[0044] An operation and maintenance system for replacing electric meters without power outage, such as Figure 1-9 As shown:

[0045] The non-stop power meter replacement device 200 comprises a connection terminal 300 and a connection plug 400; the free ends of the incoming cable and the outgoing cable of the non-stop power meter replacement device 200 are both provided with a connection plug 400.

[0046] The connection terminal 300 is installed upstream of the switch 101 of the incoming cable of the electric energy meter 100 to be replaced; the connection terminal 300 is installed downstream of the switch 101 of the outgoing cable of the electric energy meter 100 to be replaced.

[0047] like Figure 2-5 As shown, the terminal block 300 includes a first jacket 1, a second jacket 2 and a third jacket 3;

[0048] The first jacket 1 includes two first half jackets 11, the inner cavity of the first half jacket 11 is adapted to the outer contour of the incoming cable and the outgoing cable, and the inner wall of the first half jacket 11 is provided with a rubber sealing layer; one of the first half jackets 11 is provided with a card slot, and the other first half jacket 11 is provided with a card hook; the left end outer wall of the first half jacket 11 is provided with a rotatable limiting ring groove 12;

[0049] The third jacket 3 includes two third half jackets 31, the inner cavity of the third half jacket 31 is adapted to the outer contour of the incoming cable and the outgoing cable, and the inner wall of the third half jacket 31 is provided with a rubber sealing layer; one of the third half jackets 31 is provided with a slot, and the other third half jacket 31 is provided with a hook; the right end of the third half jacket 31 is provided with an external thread 32;

[0050] The second jacket 2 includes two second half jackets 21, the inner cavity of the second half jacket 21 is adapted to the outer contours of the first half jacket 11 and the third half jacket 31; one of the second half jackets 21 is provided with a slot, and the other second half jacket 21 is provided with a hook; the left end of the second half jacket 21 is provided with an internal thread 22, and the inner side wall of the right end is provided with a limiting ring block 24 adapted to the limiting ring groove 12, and a cutter 23 is provided between the internal thread 22 and the limiting ring block 24; Figure 8 As shown, the height of the cutter 23 is not uniform, and the height of the cutter 23 gradually increases from the inner wall of the second half jacket 21. The maximum height of the cutter 23 is adapted to the insulating outer layer of the inlet / outlet cable of the electric energy meter 100 to be replaced. A liquid injection port 26 with a smaller diameter is provided on the second half jacket 21.

[0051] The electrical connection assembly 25 includes a key slot 251 formed on the outer wall of one of the second half jackets 21, and the outer contour of the wiring plug 400 is adapted to the key slot 251; the inner wall of the second half jacket 21 is connected to a conductive block 28 through a conductive elastic member 27, and the conductive block 28 is adapted to the battery core of the incoming / outgoing cable;

[0052] The electrical connection assembly 25 further includes a plurality of pins 252 arranged in a line, a return spring 255 and a carbon brush 254. The plurality of pins 252 are linearly slidably matched in the second half jacket 21. One end of the pins 252 is driven by the respective return springs 255 to extend into the key slot 251 and are arranged irregularly. The top pin 252 is made of conductive material, and the other pins 252 are made of insulating material. The insulating pins 252 are provided with conductive parts 253.

[0053] The carbon brush 254 is relatively fixedly arranged in the second half jacket 21 , one carbon brush 254 is arranged between two adjacent balls 252 , and the lowest carbon brush 254 is electrically connected to the conductive elastic member 27 through an electric wire.

[0054] Working principle:

[0055] The two first half jackets 11 are butt-jointedly mounted on the outer walls of the incoming and outgoing cables of the electric energy meter 100 to be replaced, and the two first half jackets 11 are fixedly connected to form a first jacket 1 in a complete circular shape through one-way snap-fitting of a card slot and a card hook; the first half jacket 11 improves the friction force of the first jacket 1 fixed on the outer walls of the incoming / outgoing cables through a sealing layer.

[0056] The two third half jackets 31 are butt-jointedly arranged on the outer side walls of the incoming cable and the outgoing cable of the electric energy meter 100 to be replaced, and the two third half jackets 31 are fixedly connected to form a complete circular third jacket 3 through the one-way snap-fit ​​of the card slot and the card hook; the third half jacket 31 improves the friction force of the third jacket 3 fixed on the outer side walls of the incoming / outgoing cables through the sealing layer.

[0057] The two second half jackets 21 are butt-jointed and sleeved on the outer side walls of the first jacket 1 and the third jacket 3. The two second half jackets 21 are fixedly connected to form a second jacket 2 in a complete circular shape through the one-way clamping of the clamping groove and the clamping hook; at this time, the internal thread at the left end of the second jacket 2 is threadedly connected with the external thread 32 of the third jacket 3, and the limiting ring block 24 at the right end of the second jacket 2 is sleeved in the limiting ring groove 12 of the first jacket 1. In this process, one end of the cutter 23 is fully inserted into the insulating layer to reduce the difficulty of butt-jointing the two second half jackets 21.

[0058] At this time, the first jacket 1, the second jacket 2 and the third jacket 3 are coaxially arranged. A spacing is left between the first jacket 1 and the third jacket 3 and they are fixedly arranged relative to the cable.

[0059] Then, the second jacket 2 is rotated, and the second jacket 2 is rotated relative to the first jacket 1 through the cooperation of the limiting ring block 24 and the limiting ring groove 12. In this process, the cutter 23 with variable height cuts the insulation layer of the incoming cable and the outgoing cable of the electric energy meter 100 to be replaced to form a complete opening, and the battery core is exposed to the outside through this opening. In this process, the second jacket 2 and the third jacket 3 are relatively spirally rotated, so that the third jacket 3 is relatively far away from the first jacket 1, so that the opening width of the insulation layer becomes larger, until the conductive block 28 is aligned with the battery core of the incoming / outgoing cable, and the conductive elastic member 27 pushes the conductive block 28 to fit the outer wall of the battery core to achieve electrical connection.

[0060] The wiring plug 400 is inserted into the key slot 251, and a number of pins 252 arranged in a line move under the action of the irregular edge of the wiring plug 400, so that the conductive part 253 of the insulating material pin 252 abuts against the carbon brushes 254 on the upper and lower sides to achieve electrical connection, so that the wiring plug 400 is electrically connected to the battery cell through the conductive material pin 252, the carbon brushes 254 that alternate in sequence, and the conductive part 253 of the insulating material pin 252, and finally through the carbon brushes 254, the conductive elastic member 27, and the conductive block 28.

[0061] Thereby, the input / output cables of the electric energy meter 100 to be replaced are electrically connected to the non-stop meter replacement device 200, and then the switch 101 is disconnected to facilitate replacement of the new electric energy meter.

[0062] Through this operation and maintenance system, continuous measurement of the energy meter to be replaced and the new energy meter can be facilitated, so as to achieve the purpose of safely replacing the energy meter without power outage and power loss.

[0063] After the connection plug 400 is pulled out of the key slot 251, the pin 252 is pushed to move and reset under the action of the reset spring 255, so that the conductive part 253 of the pin 252 made of insulating material is separated from the carbon brush 254, so that the electrical connection assembly 25 is in a disconnected state.

[0064] The non-staff member does not have a correspondingly shaped terminal 400 inserted into the key slot 251. Normally, the electrical connection assembly 25 is in a disconnected state.

[0065] Then, insulating resin is injected into the second jacket 2 through the injection port 26, so that the first jacket 1, the second jacket 2, and the third jacket 3 are fixedly connected together and fixed to the cable.

[0066] The above design can be electrically connected to the cells of the incoming / outgoing cables multiple times when needed.

[0067] The above-mentioned embodiments only express the specific implementation of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A non-stop power-off meter replacement operation and maintenance system, comprising a non-stop power-off meter replacement device (200) connected in parallel with the power meter (100) to be replaced, and connection terminals (300) respectively connected to the incoming cable and the outgoing cable of the power meter (100) to be replaced, wherein the incoming cable and the outgoing cable of the non-stop power-off meter replacement device (200) are respectively plugged and matched with the two connection terminals (300) in a one-to-one correspondence, and characterized in that: The wiring terminal (300) comprises a first jacket (1), a second jacket (2) and a third jacket (3), wherein the first jacket (1) and the third jacket (3) are sleeved and fixed on the outer wall of the incoming cable and / or the outgoing cable; One end of the second jacket (2) is rotatably connected to the outer wall of the first jacket (1), and the internal thread (22) of the other end is threadably connected to the external thread (32) of the third jacket (3); The second jacket (2) comprises two second half jackets (21), a cutter (23) is provided in the middle of the inner side walls of the two second half jackets (21), the two second half jackets (21) are spliced ​​together to form a whole and are sleeved on the outer wall of the incoming cable and / or the outgoing cable, and during this process, the cutter (23) cuts the insulation layer of the incoming cable / outgoing cable.

2. The non-stop meter replacement operation and maintenance system of electric meter according to claim 1 is characterized in that: An electrical connection component (25) with an on / off function is provided on the second half jacket (21) at a position corresponding to the internal thread (22); the inner side wall of the second half jacket (21) is connected to a conductive block (28) via a conductive elastic member (27); and the electrical connection component (25) is electrically connected to the conductive elastic member (27).

3. The non-stop meter replacement operation and maintenance system of claim 2 is characterized in that: The electrical connection assembly (25) comprises a key slot (251); a free end of the incoming cable / outgoing cable of the non-stop meter replacement device (200) is provided with a wiring plug (400); the outer contour of the wiring plug (400) is adapted to the key slot (251); the wiring plug (400) is inserted into or detached from the key slot (251) to realize the connection and disconnection of the electrical connection assembly (25) and the conductive elastic member (27).

4. The non-stop meter replacement operation and maintenance system of electric meter according to claim 3 is characterized in that: The electrical connection assembly (25) comprises a row of pins (252), a return spring (255) connected to the pins (252) in a one-to-one correspondence, and a carbon brush (254) is fixedly arranged between two adjacent pins (252); The outermost marble (252) in a row of marbles (252) is made of conductive material, and the remaining marbles (252) are made of insulating material and are provided with conductive parts (253), and carbon brushes (254) are fixedly provided between adjacent marbles (252); When the wiring plug (400) is inserted into the key slot (251), the wiring plug (400) is electrically connected to the conductive elastic member (27) via the pin (252), carbon brush (254) and conductive portion (253) made of conductive material.

5. The non-stop meter replacement operation and maintenance system of electric meter according to claim 1 is characterized in that: The first jacket (1) comprises two first half jackets (11), and the two first half jackets (11) are spliced ​​together to form an integral whole; the third jacket (3) comprises two third half jackets (31), and the two third half jackets (31) are spliced ​​together to form an integral whole.

6. The non-stop meter replacement operation and maintenance system of claim 5, characterized in that: A one-way snap-fitting slot and a snap hook are respectively provided on one side where the two first half jackets (11) / second half jackets (21) / third half jackets (31) abut against each other.

7. The non-stop meter replacement operation and maintenance system of electric meter according to claim 1 is characterized in that: The second half jacket (21) is provided with a liquid injection port (26).

8. The non-stop electricity meter replacement operation and maintenance system according to claim 1 is characterized in that: The height of the second half jacket (21) increases linearly from the inner side wall of the second half jacket (21) toward the other end.

9. The non-stop meter replacement operation and maintenance system of electric meter according to claim 1, characterized in that: The inner side walls of the first jacket (1) and the third jacket (3) are provided with sealing layers.

10. The non-stop meter replacement operation and maintenance system of electric meter according to claim 1, characterized in that: A switch (101) is provided between the connection terminal (300) and the incoming / outgoing terminal of the electric energy meter (100) to be replaced.

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