Lightweight power test cable and use method thereof

Abstract

The invention discloses a lightweight electric power test cable and a use method, and solves the problem of heavy weight of an electric power test cable in the prior art. The lightweight power test cable comprises an insulating hose, a conductive liquid storage tank, a gas-liquid separation membrane and an expansion tank, a first end of the insulating hose is connected with a first connector, a second end of the insulating hose is connected with a second connector, the insulating hose is provided with a first interface close to the first connector, and the insulating hose is provided with a second interface close to the second connector. The first connecting joint and the second connecting joint are electrically connected with the conductive liquid in the insulating hose; the conductive liquid storage tank is connected with the first interface, conductive liquid is stored in the conductive liquid storage tank, and the conductive liquid storage tank is provided with a pumping device which is used for feeding the conductive liquid into the insulating hose through the first interface when the cable is used; the gas-liquid separation membrane is arranged at the second interface; and the expansion tank is connected with the second interface and is used for pressing the conductive liquid in the insulating hose into the conductive liquid storage tank after the cable is used.

Description

Technical Field

[0001] This invention belongs to the field of power engineering technology, and specifically relates to power testing equipment. Background Technology

[0002] Power cables are used to transmit and distribute electrical energy. High-voltage test cables are sometimes required in electrical testing to connect testing equipment and instruments. Handling power test cables is physically demanding because the core needs to be made of 25 square millimeter copper wire. The cable, weighing over ten kilograms, needs to be lifted several meters high using a long insulated pole. This often results in injuries to the lower back or cervical spine for personnel handling power test cables. Therefore, there is an urgent need to significantly reduce the cable weight. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the technical problem to be solved by this invention is to provide a lightweight power test cable and its usage method, thereby solving the problem of the heavy weight of existing power test cables and reducing the labor intensity of test wiring.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A lightweight electrical test cable, comprising:

[0006] An insulating hose, wherein a first connector is connected to a first connector at a first end and a second connector is connected to a second connector at a second end; the insulating hose has a first interface near the first connector and a second interface near the second connector; the first connector and the second connector are electrically connected to a conductive liquid in the insulating hose.

[0007] A conductive liquid storage tank is connected to a first interface. The conductive liquid storage tank contains conductive liquid and is equipped with a pumping device for delivering the conductive liquid into an insulating hose through the first interface when the cable is in use.

[0008] A gas-liquid separation membrane, wherein the gas-liquid separation membrane is disposed at the second interface;

[0009] An expansion tank, which is connected to a second interface, is used to press the conductive liquid in the insulating hose into a conductive liquid storage tank after the cable has been used.

[0010] Preferably, the volume of the conductive liquid storage tank is the same as the internal volume of the expansion tank and the insulating plastic tube.

[0011] Preferably, the conductive liquid storage tank has a cylindrical structure, and the pumping device is a piston that can move along the axial direction of the conductive liquid storage tank; and / or, a conductive liquid hose is provided between the conductive liquid storage tank and the first interface.

[0012] Preferably, the first connector is an instrument testing connector.

[0013] Preferably, the instrument test connector is provided with a plug-in structure between itself and the test instrument.

[0014] Preferably, the second connector is an alligator clip.

[0015] Preferably, the conductive liquid is composed of silver paste and hydroxyl graphene fibers.

[0016] Preferably, the mass ratio of the silver paste to the hydroxyl graphene fiber is 1:3.

[0017] Preferably, the insulating hose is a plastic hose.

[0018] In addition, the present invention also provides a method for using the lightweight power test cable. When the cable is spliced, the first connecting joint and the second connecting joint at both ends of the insulating hose are connected. After the cable is spliced, the conductive liquid stored in the conductive liquid storage tank is poured into the insulating hose.

[0019] The present invention, by adopting the above technical solution, has the following beneficial effects:

[0020] The insulating hose has a first interface near the first connecting joint and a second interface near the second connecting joint. The conductive liquid storage tank is connected to the first interface, and the expansion tank is connected to the second interface. Conductive liquid can be introduced into and discharged from the insulating hose through the first interface. The conductive liquid can conduct electricity in the insulating hose and is electrically connected to the first and second connecting joints, thereby transforming the extremely bulky large-section copper wire test cable's internal conductive core into a movable liquid conductive material.

[0021] The conductive liquid storage tank is used to deliver conductive liquid into the insulating hose through the first interface during cable use; the expansion tank is used to pressurize the conductive liquid in the insulating hose into the conductive liquid storage tank after cable use. Thus, during cable splicing, the first and second connecting joints at both ends of the insulating hose are connected first. After splicing, the conductive liquid stored in the storage tank is poured into the insulating hose. Therefore, when splicing the test cable, only the extremely lightweight insulating hose is raised. After splicing, the conductive liquid is poured into the insulating hose to become a liquid conductor. This achieves the same conductivity but significantly reduces the weight of the test cable, reducing it by more than 90%, greatly solving the problem of heavy and inconvenient splicing of high-voltage test cables.

[0022] Since the volume of the conductive liquid storage tank is the same as that of the expansion tank and the internal volume of the insulating plastic tube, when the test cable is in use, the conductive liquid in the conductive liquid storage tank can be completely sent into the insulating hose, and the inside of the insulating hose can be filled with conductive liquid. After the test cable is used, the expansion tank can completely send the conductive liquid in the insulating hose back to the conductive liquid storage tank.

[0023] The first connector is an instrument testing connector, which has a plug-in structure between itself and the testing instrument. The second connector is an alligator clip. Therefore, it facilitates wiring with testing equipment and instruments.

[0024] The conductive liquid is composed of silver paste and hydroxyl graphene fibers in a mass ratio of 1:3. The silver paste retains the excellent conductivity of silver, but the relatively small proportion avoids excessive weight and reduces costs. Furthermore, the hydroxyl graphene fibers ensure uniform dispersion of the silver powder, preventing sedimentation, and provide appropriate viscosity to guarantee good fluidity of the conductive liquid.

[0025] The insulating flexible conduit is preferably made of plastic. It is lighter in weight, which helps reduce the weight of the test cable, and it is also more flexible, making wiring operations easier.

[0026] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0027] The invention will be further described below with reference to the accompanying drawings:

[0028] Figure 1 This is a schematic diagram of the overall structure of a lightweight power test cable according to the present invention;

[0029] In the diagram: 1. Insulating hose; 2. Alligator clamp; 3. Instrument test connector; 4. Conductive liquid storage tank; 5. Conductive liquid delivery hose; 6. Gas-liquid separation membrane; 7. Expansion tank. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present invention.

[0031] Those skilled in the art will understand that, without conflict, the features in the following embodiments and implementations can be combined with each other.

[0032] The terminology used in this invention is for the purpose of describing specific embodiments only and is not intended to limit the invention. For example, terms such as "upper," "lower," "inner," and "outer" that indicate orientation or positional relationship are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0035] To address the issue of excessive weight in existing power test cables, referring to... Figure 1 As shown, this embodiment proposes a lightweight power test cable, comprising:

[0036] An insulating hose 1 has a first connector at one end and a second connector at the other end. The insulating hose 1 has a first interface near the first connector and a second interface near the second connector. The first connector and the second connector are electrically connected to the conductive liquid in the insulating hose.

[0037] Conductive liquid storage tank 4 is connected to a first interface. The conductive liquid storage tank 4 stores conductive liquid. The conductive liquid storage tank 4 is equipped with a pumping device for delivering the conductive liquid into the insulating hose 1 through the first interface when the cable is in use.

[0038] Gas-liquid separation membrane 6 is disposed at the second interface and is used to isolate the gas in the expansion tank 7 and the conductive liquid in the insulating hose 1.

[0039] Expansion tank 7 is connected to the second interface and is used to press the conductive liquid in the insulating hose 1 into the conductive liquid storage tank 4 after the cable has been used.

[0040] In this embodiment, the conductive liquid can be introduced into and discharged from the insulating hose via the first interface. During cable splicing, the first and second connectors at both ends of the insulating hose are first connected. After splicing, the conductive liquid stored in the conductive liquid storage tank is poured into the insulating hose. The conductive liquid conducts electricity within the insulating hose and electrically connects to the first and second connectors, thereby transforming the extremely bulky, large-section copper conductor test cable's internal conductive core into a movable liquid conductive material.

[0041] The length of the insulating hose conforms to the distance required for the injection of test signals from the testing instrument to the high-voltage power equipment. The volume of the conductive liquid storage tank 4 is the same as the internal volume of the expansion tank 7 and the insulating hose 1. Therefore, when the test cable is in use, the conductive liquid in the conductive liquid storage tank is completely fed into the insulating hose, filling the inside of the insulating hose with conductive liquid. After the test cable is used, the expansion tank can completely return the conductive liquid in the insulating hose to the conductive liquid storage tank.

[0042] Specifically, the conductive liquid storage tank 4 has a cylindrical structure, and the pumping device is a piston that can move axially along the conductive liquid storage tank, allowing the conductive liquid storage tank 4 to be completely inserted into the insulating hose 1. A conductive liquid delivery hose 5 is provided between the conductive liquid storage tank 4 and the first interface. In this way, the conductive liquid storage tank can be placed in a low position, and the conductive liquid can be delivered to the insulating hose through the conductive liquid delivery hose 5.

[0043] Preferably, the first connector is an instrument test connector 3. The instrument test connector 3 has a plug-in structure between it and the testing instrument. Therefore, it facilitates quick wiring with the testing instrument. The second connector is an alligator clip 2. Therefore, it facilitates quick wiring with the testing equipment.

[0044] In some embodiments, the conductive liquid is composed of a composite of silver paste and hydroxyl graphene fibers. Furthermore, the mass ratio of the silver paste to the hydroxyl graphene fibers is 1:3. The silver paste retains the excellent conductivity of silver, but the relatively small proportion avoids excessive weight and reduces costs. Additionally, the hydroxyl graphene fibers ensure uniform dispersion of the silver powder, preventing sedimentation, while providing appropriate viscosity to guarantee good flowability of the conductive liquid.

[0045] Preferably, the insulating flexible tube 1 is a plastic flexible tube. It is lightweight, which helps reduce the weight of the test cable, and it is also flexible, making wiring operations convenient.

[0046] The lightweight power test cable used in the above embodiments transforms the internal conductive core of the extremely bulky large-section copper conductor test cable into a movable liquid conductive material. When hanging the test cable, only an extremely lightweight insulating hose is raised. After hanging, the conductive liquid is poured into the insulating hose to become a liquid conductor. In this way, the conductivity is the same, but the weight of the test cable is greatly reduced, which can reduce the weight of the test cable by more than 90%, greatly solving the problem of inconvenient connection and hanging caused by the weight of high-voltage test cables.

[0047] The above description is merely a specific embodiment of the invention, but the scope of protection of the invention is not limited thereto. Those skilled in the art should understand that the invention includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the invention will be included within the scope of the claims.

Claims

1. A lightweight power testing cable, characterized in that, include: An insulating hose, wherein a first connector is connected to a first connector at a first end and a second connector is connected to a second connector at a second end; the insulating hose has a first interface near the first connector and a second interface near the second connector; the first connector and the second connector are electrically connected to a conductive liquid in the insulating hose. A conductive liquid storage tank is connected to a first interface. The conductive liquid storage tank contains conductive liquid and is equipped with a pumping device for delivering the conductive liquid into an insulating hose through the first interface when the cable is in use. A gas-liquid separation membrane, wherein the gas-liquid separation membrane is disposed at the second interface; An expansion tank, which is connected to a second interface, is used to press the conductive liquid in the insulating hose into a conductive liquid storage tank after the cable has been used.

2. The lightweight power test cable according to claim 1, characterized in that, The volume of the conductive liquid storage tank is the same as the internal volume of the expansion tank and the insulating plastic tube.

3. The lightweight power test cable according to claim 1, characterized in that, The conductive liquid storage tank has a cylindrical structure, and the pumping device is a piston that can move along the axial direction of the conductive liquid storage tank; and / or, a conductive liquid hose is provided between the conductive liquid storage tank and the first interface.

4. The lightweight power test cable according to claim 1, characterized in that, The first connector is an instrument testing connector.

5. A lightweight power test cable according to claim 4, characterized in that, The instrument test connector is provided with a plug-in structure between itself and the test instrument.

6. The lightweight power test cable according to claim 1, characterized in that, The second connector is an alligator clip.

7. A lightweight power test cable according to claim 1, characterized in that, The conductive liquid is composed of silver paste and hydroxyl graphene fibers.

8. A lightweight power test cable according to claim 7, characterized in that, The mass ratio of the silver paste to the hydroxyl graphene fiber is 1:

3.

9. A lightweight power test cable according to claim 7, characterized in that, The insulating hose is a plastic hose.

10. A method of using the lightweight power test cable according to any one of claims 1 to 9, characterized in that, When splicing cables, first connect the first and second connectors at both ends of the insulating hose. After splicing, pour the conductive liquid stored in the conductive liquid storage tank into the insulating hose.

Images