Oil-proof low-voltage power cable

Abstract

The utility model provides an oil-proof low-voltage power cable, which relates to the technical field of power cables and comprises a protective layer, a first conductive column and a second conductive column are fixedly mounted at two ends of the protective layer respectively, a threaded sleeve is fixedly mounted on the outer wall of the first conductive column, and an insertion ring is fixedly mounted at one end, away from the second conductive column, of the threaded sleeve. A fixing ring is fixedly installed on the outer wall of the protection layer. According to the utility model, during connection, a worker inserts the first conductive column into the elastic ring until the first conductive column is in contact with the second conductive column, the insertion ring enters between the outer ring and the elastic ring, and when the threaded sleeve is in contact with the threaded groove, the worker rotates the threaded sleeve, so that the threaded sleeve is in threaded connection with the threaded groove, and the insertion ring is in contact with the sealing ring; therefore, when liquid enters along the threaded connection part, the liquid is blocked at the connection part of the outer ring and the insertion ring, so that the liquid cannot enter the space between the first conductive column and the second conductive column, and the probability of short circuit of the cable is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power cables, in particular to an oil-proof low-voltage power cable. Background Art

[0002] Power cables are cables used to transmit and distribute electrical energy. They are commonly used in urban underground power grids, power station lead-out lines, internal power supply for industrial and mining enterprises, and underwater transmission lines across rivers and seas. In power lines, the proportion of cables is gradually increasing. Power cables are cable products used to transmit and distribute high-power electrical energy in the trunk lines of power systems. In the use of power cables, the complexity of the transmission process is relatively complex. For example, using them in water, high altitude, saline-alkali land, and oil environments will cause great damage to power cables, which may reduce their service life. At the same time, existing cables cannot adjust the cable connection according to different usage requirements during use, and cannot quickly connect cables for use.

[0003] In the prior art, such as the Chinese patent CN 215342116 U, there is an oil-proof low-voltage power cable, which includes a cable body, a rectangular strip is fixedly installed on the outside of the cable body, a conductive column is fixedly installed at one end of the cable body, a sleeve ring is movably sleeved on the outside of the conductive column, a sealing ring is fixedly installed on the inside of one end of the sleeve ring, four fitting grooves are provided on the other side of the sleeve ring, a threaded groove is provided on the inside of the sleeve ring, and a conductive threaded column is fixedly installed on one end of the cable body away from the conductive column. Through the waterproof oleophobic layer and the rectangular strip, during use, when the power cable is laid in an oil pool or water, the rectangular strip on the outside of the cable body plays a role in increasing the friction between the cables, and at the same time stabilizes the cable from displacement in the liquid fluidity, so that the wear of the waterproof oleophobic layer is reduced and the service life is increased. Through the anti-static coating, during the use of the cable, static electricity generated by friction is not transmitted to the conductor, which prevents breakdown and increases safety.

[0004] In the above patent, although the patent provides a conductive threaded column and a sleeve ring for connecting cables together, when the cable is in water, high altitude, saline-alkali land, oil and other environments for a long time, the threads at the cable connection may be corroded, or liquid may enter the conductive column from the threaded connection, which may cause short circuits and other phenomena. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that when the cable is in an environment such as water, high altitude, saline-alkali land, oil, etc. for a long time, the threads at the cable connection may be corroded, or liquid may enter the conductive column from the threaded connection, and proposes an oil-proof low-voltage power cable.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an oil-proof low-voltage power cable, comprising a protective layer, a first conductive column and a second conductive column are fixedly installed at both ends of the protective layer, a threaded sleeve is fixedly installed on the outer wall of the first conductive column, an insert ring is fixedly installed on the end of the threaded sleeve away from the second conductive column, a fixing ring is fixedly installed on the outer wall of the protective layer, an elastic ring and an outer ring are fixedly installed on the side of the fixing ring close to the second conductive column, a connecting sleeve is fixedly installed on the outer wall of the outer ring, a threaded groove is opened inside the connecting sleeve, and a sealing ring is fixedly installed on the side of the fixing ring close to the elastic ring.

[0007] Preferably, a first oil-proof layer is fixedly connected to the inner wall of the protective layer, and a shielding layer is fixedly installed on the inner wall of the first oil-proof layer.

[0008] Preferably, a filling layer is arranged on the inner wall of the shielding layer, a second oil-proof layer is fixedly installed inside the filling layer, and an antistatic layer is arranged inside the second oil-proof layer.

[0009] Preferably, a plurality of evenly distributed insulating layers are arranged inside the antistatic layer, and a wire core is fixedly installed inside each of the plurality of insulating layers.

[0010] Preferably, the distance between the outer ring and the elastic ring is less than the length of the outer diameter of the insert ring minus the inner diameter.

[0011] Preferably, the specification and size of the threaded sleeve matches the specification and size of the threaded groove.

[0012] Preferably, the inner diameter of the elastic ring is equal to the outer diameter of the first conductive column.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] 1. In the utility model, when connecting, the staff inserts the first conductive column into the elastic ring until it contacts the second conductive column. At this time, the plug-in ring enters between the outer ring and the elastic ring. When the inclined surface of the plug-in ring contacts the elastic ring, the plug-in ring pushes the elastic ring to move toward the second conductive column. Since the inner wall of the elastic ring fits the outer wall of the first conductive column at this time, the elastic ring is squeezed and compressed. At this time, the elastic ring gives a reaction force to the plug-in ring, which increases the friction between the plug-in ring and the elastic ring. When the threaded sleeve contacts the thread groove, the staff rotates the threaded sleeve so that the threaded sleeve is threadedly connected to the thread groove. At this time, the plug-in ring contacts the sealing ring. In this way, when liquid enters along the threaded connection, it will be blocked at the connection between the outer ring and the plug-in ring, so that the liquid cannot enter between the first conductive column and the second conductive column, thereby reducing the probability of cable short circuit.

[0015] 2. In the utility model, when the cable is in use, the protective layer can prevent external forces from damaging the cable, the first oil-proof layer is used to prevent external oil from penetrating into the cable, thereby corroding the wire core, and the second oil-proof layer is used to prevent the protective layer and the first oil-proof layer from being cut and damaged by external forces, so that oil from penetrating into the wire core is improved. The practicability of the cable is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model proposes an overall stereogram of an oil-proof low-voltage power cable;

[0017] Figure 2 Another perspective stereogram of an oil-proof low-voltage power cable is provided for the utility model;

[0018] Figure 3 A cross-sectional view of a connecting sleeve of an oil-proof low-voltage power cable is proposed for the utility model;

[0019] Figure 4 The utility model provides a stereoscopic diagram of the internal structure of the protective layer of an oil-proof low-voltage power cable.

[0020] Legend: 1. Protective layer; 2. First conductive column; 3. Threaded sleeve; 4. Insert ring; 5. Fixed ring; 6. Outer ring; 7. Connecting sleeve; 8. Thread groove; 9. Second conductive column; 10. Elastic ring; 11. Sealing ring; 12. First oil-proof layer; 13. Shielding layer; 14. Filling layer; 15. Second oil-proof layer; 16. Antistatic layer; 17. Insulating layer; 18. Wire core. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure. Example 1

[0023] like Figure 1-Figure 4As shown, the utility model provides an oil-proof low-voltage power cable, comprising a protective layer 1, a first conductive column 2 and a second conductive column 9 are fixedly installed at both ends of the protective layer 1, a threaded sleeve 3 is fixedly installed on the outer wall of the first conductive column 2, an insert ring 4 is fixedly installed on the end of the threaded sleeve 3 away from the second conductive column 9, a fixing ring 5 is fixedly installed on the outer wall of the protective layer 1, an elastic ring 10 and an outer ring 6 are fixedly installed on the side of the fixing ring 5 close to the second conductive column 9, a connecting sleeve 7 is fixedly installed on the outer wall of the outer ring 6, a threaded groove 8 is opened inside the connecting sleeve 7, and a sealing ring 11 is fixedly installed on the side of the fixing ring 5 close to the elastic ring 10.

[0024] The effect achieved by the entire embodiment 1 is that, when connecting, the staff inserts the first conductive column 2 into the elastic ring 10 until it contacts the second conductive column 9. At this time, the plug ring 4 enters between the outer ring 6 and the elastic ring 10. When the inclined surface of the plug ring 4 contacts the elastic ring 10, the plug ring 4 pushes the elastic ring 10 to move toward the second conductive column 9. Since the inner wall of the elastic ring 10 is in contact with the outer wall of the first conductive column 2 at this time, the elastic ring 10 is squeezed and compressed. At this time, the elastic ring 10 gives a reaction force to the plug ring 4, which increases the friction between the plug ring 4 and the elastic ring 10. When the threaded sleeve 3 contacts the thread groove 8, the staff rotates the threaded sleeve 3 so that the threaded sleeve 3 is threadedly connected to the thread groove 8. At this time, the plug ring 4 contacts the sealing ring 11. In this way, when the liquid enters along the threaded connection, it will be blocked at the connection between the outer ring 6 and the plug ring 4, so that the liquid cannot enter between the first conductive column 2 and the second conductive column 9, thereby reducing the probability of cable short circuit. Example 2

[0025] like Figure 1-Figure 4 As shown, further, a first oil-proof layer 12 is fixedly connected to the inner wall of the protective layer 1 , and a shielding layer 13 is fixedly installed on the inner wall of the first oil-proof layer 12 .

[0026] Furthermore, a filling layer 14 is disposed on the inner wall of the shielding layer 13 , a second oil-proof layer 15 is fixedly installed inside the filling layer 14 , and an antistatic layer 16 is disposed inside the second oil-proof layer 15 .

[0027] Furthermore, a plurality of evenly distributed insulating layers 17 are provided inside the antistatic layer 16 to isolate each other and ensure safe transmission of electric energy. A wire core 18 is fixedly installed inside each of the plurality of insulating layers 17, and the conductor part of the cable is used to transport electricity.

[0028] Furthermore, the distance between the outer ring 6 and the elastic ring 10 is smaller than the length of the outer diameter of the insert ring 4 minus the inner diameter.

[0029] Furthermore, the specification and size of the threaded sleeve 3 matches the specification and size of the threaded groove 8 .

[0030] Furthermore, the inner diameter of the elastic ring 10 is equal to the outer diameter of the first conductive column 2, which improves the tightness and prevents liquid from entering.

[0031] The effect achieved by the entire embodiment 2 is that when the cable is in use, the protective layer 1 can prevent external forces from damaging the cable, the first oil-proof layer 12 is used to prevent external oil from penetrating into the cable and causing corrosion to the core 18, and the second oil-proof layer 15 is used to prevent the protective layer 1 and the first oil-proof layer 12 from being cut and damaged by external forces, and oil from penetrating into the core 18, thereby improving the practicability of the cable.

[0032] Working principle: When connecting, the staff inserts the first conductive column 2 into the elastic ring 10 until it contacts the second conductive column 9. At this time, the plug ring 4 enters between the outer ring 6 and the elastic ring 10. When the inclined surface of the plug ring 4 contacts the elastic ring 10, the plug ring 4 pushes the elastic ring 10 to move toward the second conductive column 9. Since the inner wall of the elastic ring 10 is in contact with the outer wall of the first conductive column 2 at this time, the elastic ring 10 is squeezed and compressed. At this time, the elastic ring 10 gives a reaction force to the plug ring 4, which increases the friction between the plug ring 4 and the elastic ring 10. When the threaded sleeve 3 contacts the thread groove 8, the staff rotates the threaded sleeve 3 so that the threaded sleeve 3 is threadedly connected to the thread groove 8. At this time, the plug ring 4 contacts the sealing ring 11. In this way, when the liquid enters along the threaded connection, it will be blocked at the connection between the outer ring 6 and the plug ring 4, so that the liquid cannot enter between the first conductive column 2 and the second conductive column 9, reducing the probability of cable short circuit. When the cable is in use, the protective layer 1 can prevent external forces from damaging the cable. The first oil-proof layer 12 is used to prevent external oil from penetrating into the cable, thereby corroding the wire core 18. The second oil-proof layer 15 is used to prevent the protective layer 1 and the first oil-proof layer 12 from being cut and damaged by external forces, causing oil to penetrate into the wire core 18. The first oil-proof layer 12 and the second oil-proof layer 15 are made of polyvinyl chloride resin material. The polyvinyl chloride resin material has good anti-oil penetration function and good corrosion resistance, thereby improving the practicability of the cable.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An oil-proof low-voltage power cable, comprising a protective layer (1), characterized in that: The first conductive column (2) and the second conductive column (9) are fixedly mounted on both ends of the protective layer (1), a threaded sleeve (3) is fixedly mounted on the outer wall of the first conductive column (2), an insert ring (4) is fixedly mounted on the end of the threaded sleeve (3) away from the second conductive column (9), a fixing ring (5) is fixedly mounted on the outer wall of the protective layer (1), an elastic ring (10) and an outer ring (6) are fixedly mounted on the side of the fixing ring (5) close to the second conductive column (9), a connecting sleeve (7) is fixedly mounted on the outer wall of the outer ring (6), a threaded groove (8) is provided inside the connecting sleeve (7), and a sealing ring (11) is fixedly mounted on the side of the fixing ring (5) close to the elastic ring (10).

2. The oil-proof low-voltage power cable according to claim 1, characterized in that: The inner wall of the protective layer (1) is fixedly connected to a first oil-proof layer (12), and the inner wall of the first oil-proof layer (12) is fixedly mounted with a shielding layer (13).

3. The oil-proof low-voltage power cable according to claim 2, characterized in that: A filling layer (14) is arranged on the inner wall of the shielding layer (13), a second oil-proof layer (15) is fixedly installed inside the filling layer (14), and an antistatic layer (16) is arranged inside the second oil-proof layer (15).

4. The oil-proof low-voltage power cable according to claim 3, characterized in that: A plurality of evenly distributed insulating layers (17) are arranged inside the antistatic layer (16), and a wire core (18) is fixedly installed inside each of the plurality of insulating layers (17).

5. The oil-proof low-voltage power cable according to claim 1, characterized in that: The distance between the outer ring (6) and the elastic ring (10) is less than the length of the outer diameter of the insert ring (4) minus the inner diameter.

6. The oil-proof low-voltage power cable according to claim 1, characterized in that: The specification and size of the threaded sleeve (3) matches the specification and size of the threaded groove (8).

7. The oil-proof low-voltage power cable according to claim 1, characterized in that: The inner diameter of the elastic ring (10) is equal to the outer diameter of the first conductive column (2).

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