CN109449869B - Wiring protection device for live replacement of electric energy meter - Google Patents
Wiring protection device for live replacement of electric energy meter Download PDFInfo
- Publication number
- CN109449869B CN109449869B CN201811529902.9A CN201811529902A CN109449869B CN 109449869 B CN109449869 B CN 109449869B CN 201811529902 A CN201811529902 A CN 201811529902A CN 109449869 B CN109449869 B CN 109449869B
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- insulating plastic
- insulating
- sleeve
- plastic sleeve
- cover
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/02—Cable terminations
- H02G15/04—Cable-end sealings
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- Insulating Bodies (AREA)
Abstract
The utility model provides a wiring protection device of electric energy meter is changed in electrified, includes insulating ripple flexible cover, is equipped with the insulating plastic cover of external screw thread, is equipped with the tight cover of clamp of internal screw thread, all be equipped with an opening along the axial through hole wall on insulating ripple flexible cover, insulating plastic cover, insulating flexible cover one end is connected with insulating plastic cover, insulating plastic cover's opening and insulating ripple flexible cover's opening intercommunication are located the homonymy, insulating plastic cover internal fixation has two at least elastic copper pieces along the axial extension, elastic copper pieces are located insulating plastic cover's inside wall respectively, be equipped with the via hole that corresponds with elastic copper piece on the insulating plastic cover wall, be equipped with the plug wire hole and correspond with the via hole on the tight cover of clamp, the extension end of elastic copper piece stretches into in the insulating ripple flexible cover, the tight cover of clamp is screwed up through the external screw thread cooperation of internal screw thread and insulating plastic cover, makes insulating plastic cover reducing drive elasticity to the center motion to and the copper piece hole counterpoint with insulating plastic cover's via hole.
Description
Technical Field
The invention relates to a protection device, in particular to a wiring protection device for an electrified replacement electric energy meter.
Background
At present, the ammeter of power supply line breaks down, and in the work progress of changing the ammeter, because can not have a power failure, the workman is all carrying out the ammeter under electrified condition and changing. When replacing the electric energy meter, three-phase four wires connected with the old electric energy meter are usually pulled out from the binding posts, and because the wire terminals which are pulled out are exposed, workers generally wrap the exposed wire terminals by using insulating tapes, however, when the wire is to be reinserted into a new replaced meter binding post, the wound insulating tapes also have to be removed, and in the process of removing the insulating tapes, the worker is not careful, and the worker is easy to contact with the bare wires to cause electric shock. In actual work, an insulating telescopic tube is also adopted to replace an insulating adhesive tape, namely, an exposed wiring end of an electric wire pulled out of an electric energy meter is sleeved with the insulating telescopic tube, so that the exposed wiring end of the electric wire is shielded in the insulating telescopic tube to prevent electric shock, when a new meter wiring terminal is reinserted, the insulating telescopic tube is only required to be propped against the end face of the wiring terminal, the insulating telescopic tube is forcefully compressed, the exposed wiring end of the electric wire is inserted into a wiring terminal hole, and the new meter wiring can be replaced after fixing, but the insulating telescopic tube is adopted, when the electric wire is sleeved on the insulating telescopic tube from the exposed wiring end of the electric wire, the condition that a worker touches the exposed wiring end of the electric wire still exists, the worker is not careful, and when the insulating telescopic tube is sleeved, the worker touches the exposed wiring end of the electric wire to cause electric shock, and the insulating telescopic tube cannot fundamentally prevent the electric shock. In order to avoid electric shock accidents caused by the replacement of the three-phase four-wire power supply line of the electric energy meter during live working, a protection device capable of completely avoiding electric shock caused by the replacement of the three-phase four-wire power supply line of the electric energy meter is needed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a wiring protection device for an electrified replacement electric energy meter, which can replace the electric energy meter under the condition of no power failure and can avoid touching with bare wires in the process of replacing the electric energy meter.
The technical scheme of the invention is as follows: the utility model provides a wiring protection device of electric energy meter is changed in electrified, includes insulating ripple flexible cover, is equipped with the insulating plastic cover of external screw thread, is equipped with the tight cover of clamp of internal screw thread, all be equipped with an opening along the axial through hole wall on insulating flexible cover, insulating plastic cover's the one end and insulating plastic cover fixed connection, insulating plastic cover's opening and insulating flexible cover's opening intercommunication are located the homonymy, insulating plastic cover internal fixation is provided with two at least elastic copper pieces along the axial extension, elastic copper pieces are located insulating plastic cover's inside wall respectively, be equipped with the via hole that corresponds with elastic copper pieces respectively on the insulating plastic cover wall, elastic copper piece's extension stretches into in the insulating ripple flexible cover, be equipped with the plug wire hole that corresponds with insulating plastic cover's via hole respectively on the wall of clamp, the tight cover of clamp is screwed up through the external screw thread cooperation that is equipped with insulating plastic cover, makes insulating plastic cover reducing and drives elastic copper piece to the center motion to and plug wire hole and insulating plastic cover's via hole counterpoint.
The front end of the clamping sleeve is provided with a conical reducing compression section matched with the reducing guide section of the insulating plastic sleeve.
The shape of the clamping sleeve is a six-edge long cylinder, and the length of the thread is 1/6 of the total length of the clamping sleeve.
The clamping sleeve is made of steel or hard plastic.
Insulating rubber pads are arranged around the inner wall of the plug wire hole on the clamping sleeve.
The technical scheme is adopted: when the electric energy meter is replaced, the insulating corrugated telescopic sleeve and the opening formed in the insulating plastic sleeve are communicated on the same side, so that the electric wire on the old electric energy meter can be sleeved in the insulating corrugated telescopic sleeve and the insulating plastic sleeve through the two openings, the insulating corrugated telescopic sleeve and the insulating plastic sleeve slide to the position of the electric energy meter plug wire seat along the wires, the insulating corrugated telescopic sleeve cannot move forwards continuously through the matching screwing of the internal threads formed in the clamping sleeve and the external threads of the insulating plastic sleeve, the insulating corrugated telescopic sleeve cannot be compressed by the rotating matching of the threads, the opening of the insulating plastic sleeve is closed and contracted to drive the elastic copper sheet to move to the center to clamp the electric wire, the insulating plastic sleeve is clamped and fixed with the electric wire at the moment, after the bare wire section of the electric wire is removed from the plug wire seat of the old electric energy meter, the insulating corrugated telescopic sleeve stretches out to the bare wire section to enable the bare wire section to be wrapped in the insulating corrugated telescopic sleeve, the insulating corrugated telescopic sleeve is placed at the plug wire seat of the new meter, the bare wire section is exposed out of the electric wire, the insulating corrugated telescopic sleeve is connected to the corresponding position of the new meter plug wire seat, the insulating corrugated telescopic sleeve cannot move forwards, the insulating corrugated telescopic sleeve is forced to compress the insulating corrugated telescopic sleeve, the opening is driven to clamp the insulating plastic sleeve, and the pressure of the electric wire is released from the opening is stretched to the electric wire. Therefore, in the process of replacing the meter, the operation mode that the original worker firstly removes the bare wire on the old electric energy meter and then sleeves the insulating device is changed because the wire is sleeved in the insulating device and then the bare wire on the old electric energy meter is removed, so that the contact between the worker and the bare wire is avoided, and the electric shock accident is prevented.
The front ends of the insulating plastic sleeve and the clamping sleeve are tapered, so that when the clamping sleeve and the insulating plastic sleeve are rotationally screwed up, the diameter shrinkage pressure of the insulating plastic sleeve can be increased, the contact of the insulating plastic sleeve, the copper sheet and the electric wire is tighter, the pressure for fixing the electric wire is increased, and the insulating plastic sleeve is prevented from sliding on the electric wire. The clamping sleeve is arranged to be a six-edge long column, the appearance of the six edges and the longer length are convenient for a worker to grasp, and slipping during screwing is prevented. In addition, the external thread on the insulating plastic sleeve is arranged to be shorter, so that the insulating plastic sleeve can be quickly screwed.
Because be equipped with insulating cushion on the plug wire hole on the clamping sleeve, and insulating cushion's parcel scope is great, when inserting the current line of each looks, can play the effect that prevents the electric shock, clamping sleeve can also adopt rigid plastic in addition, also can further play insulating effect, avoids the electric shock accident.
The invention is further described below with reference to the drawings and specific examples.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a front view of the present invention;
fig. 3 is a schematic diagram of the invention inserted into a plug wire seat of an electric energy meter;
fig. 4 is a schematic view of the invention with wires removed.
In the drawing, 1 is an insulating plastic sleeve, 1-1 is a reducing guide section, 1-2 is a through hole, 1-3 is a plastic sleeve opening, 2 is a clamping sleeve, 2-1 is a reducing compression section, 2-2 is a clamping sleeve opening, 3 is an insulating rubber pad, 4 is a bare wire, 5 is an elastic copper sheet, 6 is an electric energy meter plug wire seat, 7 is an insulating corrugated telescopic sleeve, 7-1 is a telescopic sleeve opening, 8 is an electric wire insulating tube, and 9 is a plug wire hole.
Detailed Description
Referring to fig. 1 to 4, a wiring protection device for an electrified replacement electric energy meter comprises an insulation corrugated telescopic sleeve 7, an insulation plastic sleeve 1 provided with external threads and a clamping sleeve 2 provided with internal threads, wherein openings penetrating through the wall along the axial direction are formed in the wall of the insulation corrugated telescopic sleeve 7, the insulation plastic sleeve 1 and the clamping sleeve 2, one end of the insulation corrugated telescopic sleeve 7 is fixedly connected with the insulation plastic sleeve 1, the openings of the insulation plastic sleeve 1 and the openings of the insulation corrugated telescopic sleeve 7 are communicated and located on the same side, at least two elastic copper sheets 5 extending along the axial direction are fixedly arranged in the insulation plastic sleeve 1, the elastic copper sheets 5 are respectively located on the inner side wall of the insulation plastic sleeve 1, through holes 1-2 respectively corresponding to the elastic copper sheets 5 are formed in the inner wall of the insulation plastic sleeve 1, the extending ends of the elastic copper sheets 5 extend into the insulation corrugated telescopic sleeve 7, plug wire holes 9 respectively corresponding to the through holes of the insulation plastic sleeve 1 are formed in the wall of the clamping sleeve 2, and the insulation plastic sleeve 1 is tightly matched with the external threads of the insulation plastic sleeve 1 through the internal threads, so that the insulation plastic sleeve 1 and the insulation copper sheets 1 move along the central through holes 1-2, and the insulation copper sheets are driven to move towards the central through holes 1-1 and the plug wire holes 1. The front end of the clamping sleeve 2 is provided with a conical reducing compression section 2-1 which is matched with the reducing guide section 1-1 of the insulating plastic sleeve 1. The shape of the clamping sleeve 2 is a six-edge long cylinder, and the length of the thread is 1/6 of the total length of the clamping sleeve. The material of which the clamping sleeve 2 is made can be steel or hard plastic. Insulating rubber pads 3 are arranged around the inner wall of the plug wire hole 9 on the clamping sleeve.
According to the structure, when the electric energy meter is replaced, a certain electric wire is replaced by taking the example that the insulating corrugated telescopic sleeve 7 is provided with the telescopic sleeve opening 7-1, the insulating plastic sleeve 1 is provided with the plastic sleeve opening 1-3, the telescopic sleeve opening 7-1 is communicated with the plastic sleeve opening 1-3 on the same side, the voltage electric wire on the old electric energy meter can be sleeved in the insulating corrugated telescopic sleeve 7 and the insulating plastic sleeve 1 through the two openings, the insulating corrugated telescopic sleeve 7 and the insulating plastic sleeve 1 slide to the position of the plug wire seat 6 of the old electric energy meter along the electric wire, and the two current electric wires with the phase removed are placed in the plug wire holes 9 arranged on the clamping sleeve 2 to be contacted with the elastic copper sheets 5, so that a short circuit loop is formed by the voltage electric wires and the current electric wires with the phase. The insulating plastic sleeve 1 is clamped by the clamping sleeve opening 2-2 arranged on the clamping sleeve 2, the internal thread arranged on the clamping sleeve 2 is matched and screwed with the external thread of the insulating plastic sleeve 1, the insulating corrugated telescopic sleeve 7 cannot move forwards continuously due to the rotary matching of the thread, the insulating corrugated telescopic sleeve 7 is forced to be compressed, the opening of the insulating plastic sleeve 1 is closed and contracted to drive the elastic copper sheet 5 to move towards the center to clamp the electric wire, at the moment, the insulating plastic sleeve 1 clamps and fixes the electric wire, the bare wire 4 of the electric wire is removed from the wire socket 6 of the old electric energy meter, the insulating corrugated telescopic sleeve 7 stretches out towards one end of the bare wire, the bare wire 4 is wrapped in the insulating corrugated telescopic sleeve 7, the electric wire insulating tube 8 is wrapped in the insulating plastic sleeve 1, and then the insulating corrugated telescopic sleeve 7 is placed at the position of the new electric energy meter plug wire seat 6, the bare wire 4 of the electric wire is exposed by compressing the insulating corrugated telescopic sleeve 7, the insulating plastic sleeve 1 is loosened by rotating the clamping sleeve in the opposite direction, the current electric wire in the plug wire hole 9 is taken out to be replaced into a new meter, when the clamping sleeve 2 is loosened, the insulating corrugated telescopic sleeve 7 stretches towards one end of the clamping sleeve 2, the pressure for clamping the electric wire is released, the electric wire insulating tube is taken out from the telescopic sleeve opening 7-1 and the plastic sleeve opening 1-3, the meter replacing operation of one electric wire is completed, the other electric wire meter replacing operation methods are the same, and the replacement of the electric energy meter is sequentially completed. Therefore, in the invention, when the meter is replaced, the bare wire 4 on the old electric energy meter is removed after the electric wire is sleeved in the insulating device, so that the operation mode that the original worker firstly removes the bare wire on the old electric energy meter and then sleeves the insulating device is changed, and the contact between the worker and the bare wire is avoided, thereby preventing the occurrence of electric shock accidents.
The front ends of the insulating plastic sleeve 1 and the clamping sleeve 2 are tapered, so that when the clamping sleeve 2 and the insulating plastic sleeve 1 are rotationally screwed up, the diameter-reducing pressure of the insulating plastic sleeve 1 can be increased, the insulating plastic sleeve 1, the elastic copper sheet 5 and the electric wire can be tightly clamped, the pressure for fixing the electric wire is increased, and the insulating plastic sleeve 1 is prevented from sliding on the electric wire. In addition, the elastic copper sheets 5 are at least two, so that the contact area between the bare wire sections of the electric wire and the electric wire is increased, the conduction of the electric wire is ensured, and the open circuit is prevented from being formed. The clamping sleeve 2 is arranged into a hexagonal long column shape, the appearance of the hexagonal and the longer length are convenient for the gripping of workers, and slipping during screwing is prevented. In addition, the external thread on the insulating plastic sleeve 1 is set short, so that the insulating plastic sleeve can be quickly screwed.
Because be equipped with insulating cushion 3 on the plug wire hole 9 on the clamping sleeve 2, and insulating cushion 3's parcel scope is great, when inserting the current line of each looks, can play the effect that prevents the electric shock, clamping sleeve 2 can also adopt rigid plastic in addition, also can further play insulating effect, avoids the electric shock accident.
Claims (5)
1. The utility model provides a wiring protection device of electrified replacement electric energy meter which characterized in that: the insulating plastic sleeve (1) with external threads and the clamping sleeve (2) with internal threads are arranged, the wall of the insulating plastic sleeve (7), the insulating plastic sleeve (1) and the wall of the clamping sleeve (2) are respectively provided with an opening penetrating through the wall along the axial direction, one end of the insulating plastic sleeve (7) is fixedly connected with the insulating plastic sleeve (1), the opening of the insulating plastic sleeve (1) is communicated with the opening of the insulating plastic sleeve (7) at the same side, at least two elastic copper sheets (5) extending along the axial direction are fixedly arranged in the insulating plastic sleeve (1), the elastic copper sheets (5) are respectively positioned on the inner side wall of the insulating plastic sleeve (1), the extending ends of the elastic copper sheets (5) extend into the insulating plastic sleeve (7), the wall of the clamping sleeve (2) is provided with holes (9) corresponding to the through holes (1-2) of the insulating plastic sleeve (1) respectively, the elastic copper sheets (5) are respectively positioned on the wall of the insulating plastic sleeve (1) and are screwed with the inner side wall of the insulating plastic sleeve (1) respectively, the elastic copper sheets (5) are screwed down to the central threads of the insulating plastic sleeve (1) through the inner threads, and the plug wire hole (9) is aligned with the via hole (1-2) of the insulating plastic sleeve (1).
2. The connection protection device for live replacement of an electric energy meter of claim 1, wherein: the front end of the external thread of the insulating plastic sleeve (1) is provided with a conical reducing guide section (1-1), and the front end of the clamping sleeve (2) is provided with a conical reducing compression section (2-1) which is matched with the reducing guide section (1-1) of the insulating plastic sleeve (1).
3. The connection protection device for live replacement of an electric energy meter of claim 1, wherein: the shape of the clamping sleeve (2) is a six-edge long cylinder, and the length of the screw thread is 1/6 of the total length of the clamping sleeve (2).
4. The connection protection device for live replacement of an electric energy meter of claim 1, wherein: the clamping sleeve (2) is made of steel or hard plastic.
5. The connection protection device for live replacement of an electric energy meter of claim 1, wherein: insulating rubber pads (3) are arranged around the inner wall of the plug wire hole (9) on the clamping sleeve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811529902.9A CN109449869B (en) | 2018-12-14 | 2018-12-14 | Wiring protection device for live replacement of electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811529902.9A CN109449869B (en) | 2018-12-14 | 2018-12-14 | Wiring protection device for live replacement of electric energy meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109449869A CN109449869A (en) | 2019-03-08 |
| CN109449869B true CN109449869B (en) | 2023-09-08 |
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ID=65558894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811529902.9A Active CN109449869B (en) | 2018-12-14 | 2018-12-14 | Wiring protection device for live replacement of electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109449869B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113607998B (en) * | 2021-09-06 | 2023-11-03 | 广东电网有限责任公司 | Electric energy meter installation base and electric meter box |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204189984U (en) * | 2014-12-04 | 2015-03-04 | 国家电网公司 | The convenient wire clamp of pressure type |
| CN207559393U (en) * | 2017-08-16 | 2018-06-29 | 国网江西省电力公司九江供电分公司 | Table wire clamp is changed in a kind of dual-purpose electrification |
| CN208015345U (en) * | 2018-03-29 | 2018-10-26 | 国家电网公司 | The wire insulation pullover of electric energy meter is replaced for scene |
| CN208986579U (en) * | 2018-12-14 | 2019-06-14 | 国家电网有限公司 | The wiring protector of live replacement of electric energy meter |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10037613C2 (en) * | 2000-08-02 | 2002-08-01 | Jostra Ag | Electrical connection element |
| CN202221684U (en) * | 2011-09-15 | 2012-05-16 | 安徽省电力公司铜陵供电公司 | Insulating sheath used for replacing electric energy meters |
| CN206789722U (en) * | 2017-05-31 | 2017-12-22 | 陕西永诺电力科技有限公司 | A kind of live line work insulating device |
| CN212626898U (en) * | 2020-07-22 | 2021-02-26 | 国网江苏省电力有限公司镇江供电分公司 | Electric shock-proof insulated wire clamp for live replacement of three-phase electric energy meter |
-
2018
- 2018-12-14 CN CN201811529902.9A patent/CN109449869B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204189984U (en) * | 2014-12-04 | 2015-03-04 | 国家电网公司 | The convenient wire clamp of pressure type |
| CN207559393U (en) * | 2017-08-16 | 2018-06-29 | 国网江西省电力公司九江供电分公司 | Table wire clamp is changed in a kind of dual-purpose electrification |
| CN208015345U (en) * | 2018-03-29 | 2018-10-26 | 国家电网公司 | The wire insulation pullover of electric energy meter is replaced for scene |
| CN208986579U (en) * | 2018-12-14 | 2019-06-14 | 国家电网有限公司 | The wiring protector of live replacement of electric energy meter |
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| Publication number | Publication date |
|---|---|
| CN109449869A (en) | 2019-03-08 |
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