Mounting structure of cable joint
By arranging isolators and through-groove structures on the inner wall of the cable junction box, the problem of difficulty in filling the sealant is solved, and the lightweight and miniaturized design of the junction box is achieved.
Patent Information
- Application Number
- CN202422675835.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-11-04
AI Technical Summary
When injecting sealant into the existing cable joint explosion-proof box, it is difficult to fully fill the sealant due to the obstruction of the cable, and the joint box needs to be designed to be large and heavy.
An isolation piece is provided on the inner wall of the joint box, and a through groove is opened on the isolation piece to form a fluid cavity. The sealant enters the fluid cavity through the injection port and gradually seeps into the adjacent cavity until it is filled.
Ensure that the sealant is fully filled in the joint box to avoid the cable blocking the flow of sealant. The joint box can be designed to be smaller and lighter.
Smart Images
Figure CN223462723U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cable joint protection equipment, in particular to an installation structure of a cable joint. Background Art
[0002] Cable joint explosion-proof box (joint box) is a device used to protect the cable joint part. It usually adopts an upper and lower half structure. There is a weak point on the top of the box to facilitate the release of pressure in the event of a breakdown explosion. Figure 1 As shown, the installation steps are as follows: first, determine the sealing position of the cable port according to the length of the junction box, wrap some silicone rubber sealing strips and waterproof tapes around the cable port, then place the middle joint of the cable in the middle position of the lower box body of the junction box, then place the upper box body on the lower box body, and use bolts to tighten the side panels on both sides of the upper and lower box bodies, fit the side panels of the upper and lower box bodies tightly, then wrap waterproof tapes and black PVC tapes around the ports on both sides of the upper and lower box bodies, align the mixed high-voltage cable sealant with the injection port of the upper box body and pour it in until the junction box body is filled, cover the injection port with a cap, and the installation is complete.
[0003] Current technical problems: In actual application, since the cable and the inner wall of the junction box are usually in close contact, when injecting sealant, the sealant is often difficult to fill due to the obstruction of the cable, or it takes a long time to completely penetrate into the inside of the junction box. In order to avoid this problem, the aperture inside the junction box is generally much larger than the cross-sectional size of the cable to ensure that there is enough gap between the cable and the inner wall of the junction box for the sealant to pass through. However, this design makes the junction box larger in size and heavier in weight. Utility Model Content
[0004] In view of this, the purpose of the present invention is to provide a cable joint installation structure to solve the technical problem that the existing cable joint explosion-proof box cannot be fully filled with sealant due to obstruction by cables when injecting sealant.
[0005] Based on the above objectives, the present invention provides a cable connector installation structure, comprising:
[0006] There is a chamber inside and an injection port joint box on the surface;
[0007] A plurality of isolators are arranged at intervals on the inner wall of the chamber along the length direction of the junction box, and the isolators have a supporting surface for replacing the inner wall of the chamber to support the cable, so as to form a plurality of fluid cavities for containing sealant between the inner wall of the chamber and the cable. The side of the isolator is provided with a through groove for connecting adjacent fluid cavities. When injecting glue, the sealant enters the fluid cavity through the injection port and gradually penetrates into the adjacent fluid cavities through the through groove until the sealant fills all the fluid cavities.
[0008] As a preferred technical scheme of the utility model, the joint box includes detachably connected lower box body and upper box body, the injection port is arranged on the upper end of the upper box body, and ports are arranged on both ends of the lower box body and the upper box body.
[0009] As a preferred technical scheme of the utility model, the inner diameter of the chamber extends in a reducing trend from the center of the joint box to both ports.
[0010] As a preferred technical scheme of the utility model, the upper end of the upper box body is further provided with an exhaust port, which is used for discharging air in the chamber when sealing glue is injected into the chamber.
[0011] As a preferred technical scheme of the utility model, the injection port is screw-connected with a first cover, and the exhaust port is screw-connected with a second cover.
[0012] As a preferred technical scheme of the utility model, a one-way valve is arranged in the injection port, and a pressure relief valve is arranged in the exhaust port.
[0013] As a preferred technical scheme of the utility model, a pressure relief hole is arranged on the side wall of the second cover.
[0014] As a preferred technical scheme of the utility model, the one-way valve and the pressure relief valve are both provided with a first external thread, which is matched with a first internal thread arranged in the injection port and the exhaust port.
[0015] As a preferred technical scheme of the utility model, both sides of the lower box body and the upper box body are provided with side plates, the side plates are provided with bolt holes, bolts are arranged in the bolt holes, and the threaded ends of the bolts are connected with nuts.
[0016] As a preferred technical scheme of the utility model, the end of the port of the lower box body and the upper box body is provided with an annular flange.
[0017] The utility model discloses a joint box, which comprises a lower box body and an upper box body, which are detachably connected, an injection port is arranged on the upper end of the upper box body, and ports are arranged on both ends of the lower box body and the upper box body. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only illustrate the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.
[0019] Figure 1 It is an external three-dimensional structure schematic diagram of the present application.
[0020] Figure 2 It is a three-dimensional structure schematic diagram of the upper box body and the lower box body in a separated state of the present application.
[0021] Figure 3 It is a half-cut three-dimensional structure schematic diagram of the upper box body and the lower box body of the present application.
[0022] Figure 4 It is an external three-dimensional structure schematic diagram of the present application. Figure 3 It is an enlarged structure schematic diagram of position A in the middle.
[0023] In the figure, the marks are as follows: 1, lower box body; 2, upper box body; 3, port; 4, injection port; 5, exhaust port; 6, first cover; 7, second cover; 8, side plate; 9, bolt hole; 10, bolt; 11, nut; 12, isolation piece; 13, support block; 14, through slot; 15, one-way valve; 16, pressure relief valve; 17, pressure relief hole; 18, second internal thread; 19, second external thread; 20, first external thread; 21, first internal thread. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solutions and advantages of the present application more clear, the following will further describe the present application in combination with specific embodiments.
[0025] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present application should be understood as the usual meanings understood by those skilled in the art to which the present application belongs. The terms "first", "second" and similar terms used in the present application do not represent any order, quantity or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar terms mean that the elements or objects before the terms cover the elements or objects listed after the terms and their equivalents, without excluding other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right" and the like are only used to represent relative positional relationships, which may change accordingly when the absolute positions of the described objects change.
[0026] As Figure 1 and Figure 2 shown, a cable joint installation structure, comprising:
[0027] The joint box has a chamber inside and an injection port 4 on the surface;
[0028] A plurality of isolation pieces 12 are arranged in the chamber along the length direction of the joint box, the isolation pieces 12 have a support surface for supporting the cable to form a plurality of fluid cavities containing sealant between the chamber and the inner wall of the cable, the side edge of the isolation piece 12 is provided with a through groove 14 for communicating adjacent fluid cavities, when injecting sealant, the sealant enters the fluid cavity through the injection port 4 and gradually penetrates into the adjacent fluid cavity through the through groove 14 until the sealant fills all the fluid cavities;
[0029] The above technical scheme can ensure that the sealant can be fully filled into the joint box, after the cable is placed into the joint box, the isolation piece 12 is in contact with the outer surface of the cable, the prepared sealant is injected into the explosion-proof box through the injection port 4, and the sealant enters the fluid cavity of the joint box, under the action of fluidity, the sealant gradually penetrates into the adjacent fluid cavity through the through groove 14 until the sealant fills all the fluid cavities, thereby filling the joint box, since the isolation piece 12 is used, the cable can not be directly attached to the inner wall of the joint box, preventing the cable from blocking the flow of sealant, and the chamber of the joint box does not need to be designed to be much larger than the size of the cable, ensuring that the joint box remains light in weight and small in size without affecting the injection of sealant.
[0030] As Figure 2 shown, in the embodiment, the joint box comprises a lower box body 1 and an upper box body 2 connected detachably, specifically, the two sides of the lower box body 1 and the upper box body 2 are provided with side plates 8, the side plates 8 are provided with bolt holes 9, bolts 10 are arranged through the bolt holes 9, the threaded ends of the bolts 10 are connected with nuts 11, the injection port 4 is arranged on the upper end of the upper box body 2, and the two ends of the lower box body 1 and the upper box body 2 are provided with ports 3; the inner diameter of the chamber extends in a decreasing trend from the center of the joint box to the two ports 3;
[0031] The above technical scheme can facilitate the installation of the cable, the processed cable is first placed into the upper end of the lower box body 1, the upper box body 2 is aligned with the lower box body 1, the side plates 8 of the lower box body 1 and the upper box body 2 are aligned, the bolts 10 are arranged through the bolt holes 9 on the surface of the side plates 8 of the lower box body 1 and the upper box body 2, the threaded ends of the bolts 10 are tightened by the nuts 11, and the side plates 8 of the lower box body 1 and the upper box body 2 are attached to each other.
[0032] As Figure 2As shown, in the embodiment, the spacer 12 is an arc-shaped plate structure, and the spacer 12 is formed as a hollow structure due to the through grooves 14 formed on the side edges of the spacer 12, and a plurality of support blocks 13 are formed between adjacent through grooves 14, and the support blocks 13 are components of the spacer 12, and the spacer 12 and the joint box can be integrally formed in the actual production process;
[0033] The above technical solution can better fix the cable, the arc-shaped plate structure of the spacer 12 can better fit the cable, the angle of the arc is 180 degrees, so that when the upper box body 2 and the lower box body 1 are combined, a complete annular plate structure is formed to fix the cable and prevent it from deviating.
[0034] As shown in Figure 1 and Figure 2 In the embodiment, the upper end of the upper box body 2 is also provided with an exhaust port 5, which is used to exhaust the air inside the cavity when the sealant is injected; the injection port 4 is threadedly connected with a first cover 6, and the exhaust port 5 is threadedly connected with a second cover 7; specifically, the inside of the first cover 6 and the second cover 7 is provided with a second internal thread 18, and the surface of the injection port 4 and the exhaust port 5 is provided with a second external thread 19 matched with the second internal thread 18;
[0035] The above technical solution can plug the injection port 4 and the exhaust port 5 after the sealant is injected, and when used, the first cover 6 and the second cover 7 are unscrewed to open the injection port 4 and the exhaust port 5, the sealant is poured into the joint box through the injection port 4, and the air inside the joint box is exhausted outward through the exhaust port 5, and when the joint box is filled with the sealant, the injection port 4 and the exhaust port 5 are sealed by using the first cover 6 and the second cover 7.
[0036] As shown in Figure 3 and Figure 4 In the embodiment, a one-way valve 15 is arranged in the injection port 4, and a pressure relief valve 16 is arranged in the exhaust port 5;
[0037] The above technical solution can improve the stability of the sealant injection, and by arranging the one-way valve 15 in the injection port 4, the sealant can be prevented from spilling out of the injection port 4 when pouring in, and similarly, the air inside the joint box will be exhausted through the pressure relief valve 16 as the sealant is poured in.
[0038] As shown in Figure 4 In the embodiment, the side wall of the second cover 7 is provided with a pressure relief hole 17;
[0039] The above technical solution can protect the pressure relief valve 16 and prevent the pressure relief valve 16 from being directly exposed to the outside. At the same time, it can ensure that the pressure relief valve 16 can relieve pressure. When in use, the second cover 7 is rotated so that the second internal thread 18 inside it rotates around the second external thread 19 outside the exhaust port 5 to ensure that there is a gap between the internal top wall of the second cover 7 and the pressure relief valve 16. The gas inside the joint box is discharged to the outside through the gap and the pressure relief hole 17.
[0040] like Figure 4 As shown, in this embodiment, the outside of the one-way valve 15 and the pressure relief valve 16 are both provided with a first external thread 20, and the first external thread 20 cooperates with the first internal thread 21 provided in the injection port 4 and the exhaust port 5;
[0041] The above technical solution can facilitate the removal or installation of the one-way valve 15 and the pressure relief valve 16 from the injection port 4 and the exhaust port 5 .
[0042] like Figure 1 and Figure 2 As shown, in this embodiment, the ends of the ports 3 of the lower box body 1 and the upper box body 2 are both provided with an annular flange;
[0043] The above technical solution can conveniently press the port 3 between the lower box body 1 and the upper box body 2. By providing the annular flange, it can be ensured that when the tape is wrapped around the port 3, the annular flange can limit the tape.
[0044] Working principle: When in use, put the processed cable into the upper end of the lower box body 1, align the upper box body 2 with the lower box body 1 and merge them, ensure that the side panels 8 on both sides of the lower box body 1 and the upper box body 2 are aligned, use the bolt 10 to pass through the bolt holes 9 on the surface of the side panels 8 of the lower box body 1 and the upper box body 2, and then use the nut 11 to tighten the threaded end of the bolt 10 until the side panels 8 of the lower box body 1 and the upper box body 2 fit together, wrap the waterproof tape and black PVC tape around the port 3 to seal the gap between the ports 3, unscrew the first cover 6 and the second cover 7, thereby opening the injection port 4 and the exhaust port 5, align the sealant with the injection port 4 and pour it into the joint box. After the sealant enters the fluid cavity of the joint box, it flows Under the action of the sealant, the sealant gradually penetrates into the adjacent fluid cavities through the through groove 14 until the sealant fills all the fluid cavities, thereby filling the inside of the junction box. Due to the use of the isolation piece 12, the cable can be prevented from directly adhering to the inner wall of the junction box, preventing the cable from blocking the flow of the sealant. At the same time, there is no need to design the chamber of the junction box to be much larger than the cable size, ensuring that the junction box maintains its own light weight and small volume without affecting the filling of the sealant. During this process, the air inside the junction box is discharged to the outside through the exhaust port 5. When the inside of the junction box is filled with sealant, the first cover 6 and the second cover 7 are used to seal the injection port 4 and the exhaust port 5 to complete the installation.
[0045] Those skilled in the art will understand that the above discussion of any of the embodiments is merely exemplary in nature and is not intended to imply that the scope of the present application, including the claims, is limited to these examples; the above embodiments or technical features among different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for the sake of brevity.
[0046] The present application is intended to cover all such alternatives, modifications, and variations as fall within the broad scope of the appended claims. Accordingly, any and all such alternatives, modifications and variations are intended to be encompassed by the appended claims.
Claims
1. An installation structure of a cable joint, comprising: a joint box with a chamber inside and an injection port (4) on the surface; characterized in that the installation structure further comprises: a plurality of partitions (12) arranged in the chamber along the length direction of the joint box, the partitions (12) having a support surface for supporting the cable instead of the inner wall of the chamber to form a plurality of fluid cavities containing sealant between the chamber and the inner wall of the cable, the side edges of the partitions (12) being provided with through grooves (14) for communicating adjacent fluid cavities, and when injecting sealant, the sealant enters the fluid cavities through the injection port (4) and gradually penetrates into adjacent fluid cavities through the through grooves (14) until all the fluid cavities are filled with sealant.
2. The installation structure for a cable joint according to claim 1, characterized by The joint box comprises a lower box body (1) and an upper box body (2) connected detachably, the injection port (4) is provided on the upper end of the upper box body (2), and the two ends of the lower box body (1) and the upper box body (2) are provided with ports (3).
3. The installation structure for a cable joint according to claim 2, characterized by The inner diameter of the chamber extends in a decreasing trend from the center of the joint box to the two ports (3).
4. The installation structure for a cable joint according to claim 2 or 3, characterized in that, The upper end of the upper box body (2) is further provided with an exhaust port (5) for discharging air inside the chamber when sealant is injected into the chamber.
5. The installation structure for a cable joint according to claim 4, characterized by The injection port (4) is threadedly connected with a first cover (6), and the exhaust port (5) is threadedly connected with a second cover (7).
6. The installation structure for a cable joint according to claim 5, wherein A one-way valve (15) is arranged in the injection port (4), and a pressure relief valve (16) is arranged in the exhaust port (5).
7. The installation structure for a cable joint according to claim 6, wherein A pressure relief hole (17) is provided in the side wall of the second cover (7).
8. The installation structure for a cable joint according to Claim 7, wherein The one-way valve (15) and the pressure relief valve (16) are both provided with a first external thread (20) which cooperates with a first internal thread (21) provided in the injection port (4) and the exhaust port (5).
9. The installation structure of a cable joint according to Claim 2, wherein The lower box body (1) and the upper box body (2) are both provided with side plates (8) on the two sides, the side plates (8) are provided with bolt holes (9), bolts (10) are arranged in the bolt holes (9), and the threaded ends of the bolts (10) are connected with nuts (11).
10. The installation structure of a cable joint according to Claim 2, wherein The end of the port (3) of the lower box body (1) and the upper box body (2) is provided with an annular flange.