CN115060960A - Passive non-contact direct current detection device - Google Patents
Passive non-contact direct current detection device Download PDFInfo
- Publication number
- CN115060960A CN115060960A CN202210879675.2A CN202210879675A CN115060960A CN 115060960 A CN115060960 A CN 115060960A CN 202210879675 A CN202210879675 A CN 202210879675A CN 115060960 A CN115060960 A CN 115060960A
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- Prior art keywords
- magnet
- detection device
- current detection
- cable
- direct current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/145—Indicating the presence of current or voltage
- G01R19/15—Indicating the presence of current
Abstract
The application discloses passive non-contact direct current detection device includes: transparent outer cover, flat column magnet and spring; the flat column magnet is horizontally placed in the right center of the transparent shell; the number of the springs is 6; the 4 springs uniformly pull the inner wall of the transparent shell in the horizontal direction of the flat cylindrical magnet, and the two springs uniformly pull the inner wall of the transparent shell in the vertical direction of the center of the flat cylindrical magnet; the transparent shell is marked with a reference line for detecting the direction of the cable; the detection cable direction reference line is perpendicular to the plane of the flat column magnet. When the cable that awaits measuring is examined, only need be close to the cable that awaits measuring with this device as far as possible, through the upset condition of observing the flat column body magnet, can judge whether this cable that awaits measuring has the electric current to pass through.
Description
Technical Field
The application relates to the technical field of current detection, in particular to a passive non-contact direct current detection device.
Background
For the maintenance work of the direct current cable or the direct current equipment, in most cases, operation and maintenance personnel only need to determine whether the cable has current or not to determine the next operation. Most methods for determining whether the cable has current at the present stage clamp the cable to be detected through a direct current clamp ammeter, and although the method is reliable, the clamp ammeter hardly has sufficient space to detect the cable in a working site with dense cables or narrow space. Moreover, the clamp-on ammeter is expensive and inconvenient to carry, and the battery power supply required by the clamp-on ammeter is limited by endurance.
Disclosure of Invention
The application provides a passive non-contact direct current detection device, which is used for solving the problems that the test environment is limited, the price is high and a clamp-on ammeter needs to supply power in the current test method for testing a cable by using the clamp-on ammeter.
The application provides a passive non-contact direct current detection device, includes: transparent outer cover, flat column magnet and spring; the flat column magnet is horizontally placed in the right center of the transparent shell; the number of the springs is 6; the 4 springs uniformly pull the inner wall of the transparent shell in the horizontal direction of the flat column magnet, and the two springs uniformly pull the inner wall of the transparent shell in the vertical direction of the center of the flat column magnet; the transparent shell is marked with a reference line for detecting the direction of the cable; the detection cable direction reference line is perpendicular to the plane of the flat column magnet.
Optionally, the transparent casing is embodied as a spherical shell.
Optionally, a magnet turning indicator is closely attached to the lower side of the flat cylinder magnet.
Optionally, the magnet flipping indicator is covered with phosphor.
Optionally, magnet turning angle scale marks are uniformly engraved on the transparent shell; the planes where the magnet turning angle scale marks are located are parallel to the flat column magnets.
Optionally, the flat cylindrical magnet is made of rubidium.
Optionally, the material of the spring is copper.
Optionally, the transparent housing is made of an insulating material.
Optionally, the spring is a cylindrical compression spring.
Optionally, an extension auxiliary insulating rod interface is arranged at a plane intersection point where the detection cable direction reference line and the flat column magnet are located; the extension auxiliary insulating rod interface is of a thread structure.
According to the technical scheme, the embodiment of the application has the following advantages:
the application provides a passive non-contact direct current detection device, includes: transparent outer cover, flat column magnet and spring; the flat column magnet is horizontally placed in the right center of the transparent shell; the number of the springs is 6; the 4 springs uniformly pull the inner wall of the transparent shell in the horizontal direction of the flat column magnet, and the two springs uniformly pull the inner wall of the transparent shell in the vertical direction of the center of the flat column magnet; the transparent shell is marked with a reference line for detecting the direction of the cable; the detection cable direction reference line is perpendicular to the plane of the flat column magnet.
Through carrying on flat column body magnet and spring in transparent housing, when the cable that awaits measuring of inspection, only need be close to the cable that awaits measuring with this device as far as possible, then through the upset condition of observing flat column body magnet, can judge whether this cable that awaits measuring has the electric current to pass through. The traditional method for testing is solved as follows: the defects that the traditional clamp-on ammeter is limited in test environment, expensive in price, power needs to be supplied and the like are overcome by using the clamp-on ammeter for testing.
In addition, the device can detect not only cables but also modules through which direct current passes, such as fuses and the like. The approximate position of the direct current wire buried in the wall can be detected.
Drawings
Fig. 1 is an internal structural view of a passive contactless direct current detection device provided in an embodiment of the present application;
fig. 2 is an external view schematically illustrating a passive contactless direct current detection device according to an embodiment of the present disclosure;
fig. 3 is an extended auxiliary insulation rod carried by a passive non-contact dc current detection device provided in an embodiment of the present application;
fig. 4 is a first schematic diagram of a detection process of a passive non-contact dc current detection apparatus provided in an embodiment of the present application;
fig. 5 is a schematic diagram of a detection process of a passive non-contact dc current detection apparatus provided in the embodiment of the present application;
fig. 6 is a first schematic diagram of a passive contactless dc current detection apparatus provided in an embodiment of the present application;
fig. 7 is a schematic diagram of a passive contactless direct current detection device provided in an embodiment of the present application.
Wherein:
1 is transparent shell, 2 is flat column body magnet, 3 is the spring, and 4 are magnet upset indicateing arm, and 5 are detection cable direction reference line, and 6 are magnet upset angle scale mark, and 7 are supplementary insulator spindle interface of extension, 8 are supplementary insulator spindle of extension.
Detailed Description
The embodiment of the application provides a passive non-contact direct current detection device, which is used for solving the problems that the test environment is limited, the price is high and a clamp-on ammeter needs to supply power in a current test method for testing a cable by using the clamp-on ammeter.
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1 and fig. 2, fig. 1 is an internal structure diagram of a passive contactless dc current detection device provided in an embodiment of the present application, and fig. 2 is an external schematic diagram of the passive contactless dc current detection device provided in the embodiment of the present application, where the present application provides an internal structure diagram of a passive contactless dc current detection device, including: a transparent shell 1, a flat column magnet 2 and a spring 3; the flat column magnet 2 is horizontally placed in the right center of the transparent shell 1; the number of the springs 3 is 6; the 4 springs 3 are uniformly pulled towards the inner wall of the transparent shell 1 in the horizontal direction of the flat cylindrical magnet 2, and the two springs 3 are uniformly pulled towards the inner wall of the transparent shell 1 by the springs 3 in the vertical direction of the center of the flat cylindrical magnet 2; the transparent shell 1 is marked with a cable direction detection reference line 5; the detection cable direction reference line 5 is perpendicular to the plane of the flat cylindrical magnet 2.
In the embodiment of the invention, a flat cylindrical magnet 2 and a spring 3 are arranged in a transparent shell 1, wherein the spring 3 is pulled around the flat cylindrical magnet 2 in the horizontal direction, and the two springs 3 are pulled at the center position of the flat cylindrical magnet 2, which is vertical to the horizontal plane, one above the other, so that the flat cylindrical magnet 2 is fixed in the transparent shell 1.
In an alternative embodiment, the transparent casing 1 is embodied as a spherical shell.
In an alternative embodiment, the transparent shell is covered with phosphor.
In the embodiment of the present invention, the transparent casing 1 is a round spherical shell.
In an alternative embodiment, a magnet turning indicator 4 is closely attached to the lower side of the flat cylindrical magnet 2.
In the embodiment of the invention, the magnet turning indicator 4 can facilitate a user to observe the turning angle of the magnet more intuitively.
To facilitate viewing in a dim environment, in an alternative embodiment, the magnet flip indicator 4 is coated with a phosphor.
In an optional embodiment, magnet turning angle graduations 6 are uniformly carved on the transparent shell 1; the plane where the magnet turning angle scale marks 6 are located is parallel to the flat column magnet.
In the embodiment of the invention, the magnet turning angle scale 6 is used for estimating the current degree of the cable to be measured, and the larger the scale pointed by the turning indicator is, the larger the turning angle of the flat cylinder magnet 2 is, the larger the flat cylinder magnet 2 overcomes the spring tension, the larger the magnetic field of the cable to be measured is, and the larger the current of the cable is deduced.
In an alternative embodiment, the material of the flat cylindrical magnet 2 is rubidium.
In the embodiment of the invention, the flat column magnet 2 is made of rubidium, and the magnetic poles of the flat column magnet are respectively positioned at the top and the bottom.
In an alternative embodiment, the material of the spring 3 is copper.
In the embodiment of the present invention, in order to fix the flat cylindrical magnet 2 and enable it to return to its original position without the influence of other magnetic fields, a copper spring is used as an important component of the embodiment of the present invention.
In an alternative embodiment, the transparent housing 1 is made of an insulating material.
In the embodiment of the invention, in order to ensure the safety of a user in the process of using the device, the transparent shell 1 is made of an insulating material.
In an alternative embodiment, the spring 3 is a cylindrical compression spring.
In an optional embodiment, an extended auxiliary insulating rod interface 7 is arranged at the intersection point of the plane where the detection cable direction reference line 5 and the flat cylindrical magnet 2 are located; the extension auxiliary insulating rod interface is of a thread structure.
Referring to fig. 3, fig. 3 is a schematic view of an extended auxiliary insulating rod carried by a passive non-contact dc current detection apparatus according to an embodiment of the present invention, in which an extended auxiliary insulating rod interface 7 is a threaded structure and can be in butt joint with an extended auxiliary insulating rod 8, so that the extended auxiliary insulating rod 8 is used to detect more cables to be detected at hidden positions in a complex field environment.
In a preferred embodiment, the extension auxiliary insulation rod 8 has a telescopic function, which can be adapted to more complicated field environments.
Please refer to fig. 4 as a schematic diagram of a first detection process of a passive non-contact dc detection apparatus provided in an embodiment of the present application, and fig. 5 is a schematic diagram of a second detection process of a passive non-contact dc detection apparatus provided in an embodiment of the present application, in which a cable direction reference line of the apparatus is aligned with a cable to be detected and moved to the cable to be detected, so that the apparatus is as close as possible to the cable to be detected, and even can be tightly attached to the cable for detection under the allowable conditions. At this moment, through observing the position of magnet upset index finger, if still standing still in "0" scale, then can judge that the cable that awaits measuring does not have the electric current to pass through. If the flat cylinder magnet 2 upset indictor surpasses "0" scale, then indicate that the cable that awaits measuring has the electric current to pass through, through observing the scale value that flat cylinder magnet 2 upset indictor corresponds, can confirm the numerical value size of the cable electric current that awaits measuring.
Referring to fig. 6 and 7, fig. 6 is a first schematic diagram of a passive non-contact dc current detection device provided in the embodiment of the present application, fig. 7 is a second schematic diagram of a passive non-contact dc current detection device provided in the embodiment of the present application, and in terms of device principle, the present invention actually utilizes the ampere rule: assuming a dc cable running vertically above ground, when current passes from bottom to top, a magnetic field is generated around the wire, as determined by ampere, in the direction shown in the magnetic induction line of fig. 6, and then a flat rubidium magnet is placed horizontally, as shown in fig. 7, with its N pole up and S pole down, in the direction shown in the magnetic induction line of fig. 6. When the magnet moves close to the electric wire, the magnetic induction line directions of the electric wire and the magnet are not consistent, and if the electric wire is fixed, the magnet is overturned to generate an overturning angle a. In the absence of other external forces, the magnet will flip over until its magnetic induction line direction coincides with the magnetic induction line direction of the wire. At this point, the magnet will be parallel to the wire and perpendicular to the ground.
The invention provides a passive non-contact direct current detection device, which comprises: a transparent shell 1, a flat column magnet 2 and a spring 3; the flat column magnet 2 is horizontally placed in the right center of the transparent shell 1; the number of the springs 3 is 6; the 4 springs 3 are uniformly pulled towards the inner wall of the transparent shell 1 in the horizontal direction of the flat cylindrical magnet 2, and the two springs 3 are uniformly pulled towards the inner wall of the transparent shell 1 by the springs 3 in the vertical direction of the center of the flat cylindrical magnet 2; the transparent shell 1 is marked with a cable direction detection reference line 5; the detection cable direction reference line 5 is perpendicular to the plane of the flat cylindrical magnet 2.
Through carrying on flat cylinder magnet 2 and spring 3 in transparent housing 1, when the cable that awaits measuring of inspection, only need be close to the cable that awaits measuring with this device as far as possible, then through the upset condition of observing flat cylinder magnet 2, can judge whether this cable that awaits measuring has the electric current to pass through. The traditional method for testing is solved as follows: the defects that the traditional clamp-on ammeter is limited in test environment, expensive in price, power needs to be supplied and the like are overcome by using the clamp-on ammeter for testing.
In addition, the device can detect not only cables but also modules through which direct current passes, such as fuses and the like. The approximate position of the direct current wire buried in the wall can be detected.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A passive non-contact direct current detection device, comprising: transparent outer cover, flat column magnet and spring; the flat column magnet is horizontally placed in the right center of the transparent shell; the number of the springs is 6; the 4 springs uniformly pull the inner wall of the transparent shell in the horizontal direction of the flat column magnet, and the two springs uniformly pull the inner wall of the transparent shell in the vertical direction of the center of the flat column magnet; the transparent shell is marked with a reference line for detecting the direction of the cable; the direction reference line of the detection cable is perpendicular to the plane of the flat cylindrical magnet.
2. The passive contactless direct current detection device according to claim 1, characterized in that the transparent housing is embodied as a spherical shell.
3. The passive non-contact direct current detection device according to claim 1, wherein a magnet turning indicator is closely attached to a lower portion of the flat cylindrical magnet.
4. The passive non-contact dc detection device of claim 3, wherein the magnet flipping indicator is covered with phosphor.
5. The passive non-contact direct current detection device according to claim 1, wherein magnet turning angle graduations are evenly engraved on the transparent shell; the planes where the magnet turning angle scale marks are located are parallel to the flat column magnets.
6. The passive non-contact direct current detection device of claim 1, wherein the flat cylindrical magnet is made of rubidium.
7. The passive non-contact dc current detection device according to claim 1, wherein the spring is made of copper.
8. The passive non-contact dc current detection device of claim 1, wherein the transparent housing is made of an insulating material.
9. The passive contactless direct current detection device of claim 1, wherein the spring is a cylindrical compression spring.
10. The passive non-contact direct current detection device according to claim 1, wherein an extended auxiliary insulation rod interface is arranged at a junction of a plane where the detection cable direction reference line and the flat cylindrical magnet are located; the extension auxiliary insulating rod interface is of a thread structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210879675.2A CN115060960A (en) | 2022-07-25 | 2022-07-25 | Passive non-contact direct current detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210879675.2A CN115060960A (en) | 2022-07-25 | 2022-07-25 | Passive non-contact direct current detection device |
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| Publication Number | Publication Date |
|---|---|
| CN115060960A true CN115060960A (en) | 2022-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210879675.2A Pending CN115060960A (en) | 2022-07-25 | 2022-07-25 | Passive non-contact direct current detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117572060A (en) * | 2024-01-17 | 2024-02-20 | 国网湖北省电力有限公司经济技术研究院 | Non-contact passive distributed cable current measuring device and measuring method |
-
2022
- 2022-07-25 CN CN202210879675.2A patent/CN115060960A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117572060A (en) * | 2024-01-17 | 2024-02-20 | 国网湖北省电力有限公司经济技术研究院 | Non-contact passive distributed cable current measuring device and measuring method |
| CN117572060B (en) * | 2024-01-17 | 2024-04-09 | 国网湖北省电力有限公司经济技术研究院 | Non-contact passive distributed cable current measuring device and measuring method |
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