A self-draining fabricated cable joint well

Abstract

The utility model discloses a cable installation equipment technical field's a kind of self-draining assembly type cable joint well, including cable joint well main part and drainage point, drainage point is located at the side of cable joint well main part, the side wall on the both sides of cable joint well main part inner chamber is equipped with several cable supports, the bottom of cable joint well main part inner chamber is provided with water collecting tank, the bottom of water collecting tank is provided with drainage hole orifice, the bottom of drainage hole orifice is connected with drain pipe, the end of drain pipe away from drainage hole orifice is connected with drainage point, the top of drainage hole orifice is provided with magnetic attraction type switch. The utility model discloses the cooperation setting of drainage hole orifice and magnetic attraction type switch, connect drainage point with external water pipe, by control magnetic attraction type switch is in open or closed state, to realize self-control drainage, reduce the structural complexity, save cost, do not need electric power operation, reduce the risk of failure in the field.

Description

Technical Field

[0001] This utility model relates to the technical field of cable installation equipment, and in particular to a self-draining prefabricated cable joint well. Background Technology

[0002] In current wind and solar power projects, long-distance direct burial of cables is commonly used to ensure economic efficiency. Cable joints are installed between cables, typically placed in cable joint wells. Since the joints are weak points in the cables, they must not be submerged in water for extended periods; therefore, the cable joint wells need to have good drainage capabilities. Because wind and solar power sites are usually located in sparsely populated areas, inspecting each joint well is time-consuming, labor-intensive, and results in high maintenance costs. If the site is located in mountainous terrain with uneven elevations, drainage pipes cannot be laid along the terrain. To ensure smooth drainage, it is necessary to cross potential elevation changes, adding significant excavation work. Furthermore, the harsh outdoor environment means that if electromechanical devices are used to control drainage, there is a high possibility that the equipment will malfunction during the entire operation and maintenance cycle of the site, causing cable damage and incalculable losses.

[0003] For example, patent CN103953070A discloses a waterproof cable well, which has a water collection pit at the bottom and a heater and ultrasonic atomizing device on the top, along with an exhaust pipe. Another example is a waterproof structure for a cable joint well disclosed in CN117328498A, which includes an additional sealing at the cable joint, but still uses a water pump and corresponding control circuitry for operation. Both of these cable joint wells are difficult to reliably operate in harsh outdoor environments. Since the equipment requires power, a corresponding power supply method must be set up, resulting in high initial investment costs and complex subsequent maintenance. Utility Model Content

[0004] To address the issues mentioned above regarding the reliability of existing cable joint wells in harsh outdoor environments, the high initial investment costs, and the complexity of subsequent maintenance, this invention provides a self-draining prefabricated cable joint well.

[0005] This utility model provides a self-draining prefabricated cable joint well, which adopts the following technical solution:

[0006] A self-draining prefabricated cable joint well includes a cable joint well body and a drainage point. The drainage point is located on one side of the cable joint well body. Several cable supports are installed on the side walls of both sides of the inner cavity of the cable joint well body. A water collection tank is provided at the bottom of the inner cavity of the cable joint well body. A drainage hole is provided at the bottom of the water collection tank. A drainage pipe is connected to the bottom of the drainage hole. The end of the drainage pipe away from the drainage hole is connected to the drainage point. A magnetic switch is provided at the top of the drainage hole.

[0007] By adopting the above technical solution, the main body of the cable joint well is placed at a predetermined location. Then, the drainage pipe is pulled out from the bottom of the water collection tank and buried in a nearby drainage point. The drainage point is connected to an external water pipe. After keeping the magnetic switch in the open position, water is supplied to the main body of the cable joint well. The water flows into the drainage pipe through the drainage hole until the water collection tank begins to overflow. Then, the magnetic switch is closed and the external water pipe is disconnected. This achieves autonomous drainage control, reduces structural complexity, saves costs, does not require electricity to operate, and reduces the risk of failure in the field.

[0008] Optionally, the top of the cable joint well body is provided with an opening, the top of the cable joint well body is installed with a cover plate, the edge of the top of the cable joint well body is provided with a flange, and the bottom edge of the cover plate is provided with a concave flange that matches the flange.

[0009] By adopting the above technical solution, the connection between the cable joint well body and the cover plate is made more seamless.

[0010] Optionally, an opening is provided on the side wall of the cable joint well body.

[0011] The above technical solution is used for cable entry and exit.

[0012] Optionally, the cover plate is made of precast reinforced concrete.

[0013] By adopting the above technical solutions, the cover plate becomes more durable, thereby increasing its service life.

[0014] Optionally, the outer wall of the cable bracket is coated with a polyethylene anti-corrosion layer.

[0015] By adopting the above technical solution, it is ensured that the cable will not be submerged in water.

[0016] Optionally, the height of the top of the drainage point is lower than the height of the top of the drainage hole opening, and a vertical pipe is provided at the outlet of the drainage point.

[0017] By adopting the above technical solution, the possibility of communication failure caused by the drop in water level at the drainage point during a long dry season can be reduced.

[0018] Optionally, a first magnet is provided at the lower edge of the drain hole opening to be magnetically connected to the magnetic switch, and a first sealing ring is provided at the upper edge of the drain hole opening.

[0019] By adopting the above technical solution, the drain hole can be sealed by magnetically connecting the first magnet and the magnetic switch, and the first sealing ring ensures that air cannot enter the hole when the drain hole is closed.

[0020] Optionally, the lower part of the magnetic switch is provided with a magnetic seal, and a second sealing ring is provided inside the magnetic seal. The size of the second sealing ring matches the size of the first sealing ring. A second magnet is provided in the middle of the second sealing ring. A float is provided at the upper part of the magnetic switch. An acrylic rod is connected between the float and the second magnet. Guide rails are provided on both sides of the inner wall of the water collection tank. Guide blocks that slide with the guide rails are installed on both sides of the second sealing ring.

[0021] By adopting the above technical solution, when draining water, the drain point is connected to the external water pipe, and the second magnet is separated from the first magnet, so that the magnetic switch is in the open state, water is supplied to the main body of the cable joint well, the float floats on the water surface, and the water is discharged through the drain hole until the water collection tank begins to overflow. Then, the second sealing ring is pushed down to drive the second magnet to move downward, so that the second magnet is magnetically connected to the first magnet. At this time, the magnetic switch is in the closed state.

[0022] In summary, this utility model has at least one of the following beneficial effects:

[0023] By combining the drainage hole opening with a magnetic switch, the drainage point is connected to an external water pipe. By controlling the magnetic switch to be open or closed, autonomous drainage is achieved, reducing structural complexity, saving costs, eliminating the need for electricity, and reducing the risk of failure in the field.

[0024] By employing the principle of communicating vessels, the main body of the cable joint well is placed at a predetermined location, and the drainage pipe is pulled out from the bottom and buried in a nearby drainage point. The drainage pipe can be placed on the ground surface or shallowly buried in the soil, without needing to consider the terrain, which greatly reduces the amount of excavation and backfilling work for the drainage pipe, thereby further reducing the cost. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the drainage outlet structure of this utility model;

[0028] Figure 3 This is a schematic diagram of the magnetic switch structure of this utility model;

[0029] Figure 4 This is a schematic diagram of the drainage point structure of this utility model.

[0030] In the diagram: 1. Main body of cable joint well; 2. Cover plate; 3. Cable bracket; 4. Water collection tank; 4-1. Drainage hole opening; 4-2. First magnet; 4-3. First sealing ring; 5. Drainage pipe; 5-1. Vertical pipe; 6. Drainage point; 7. Magnetic switch; 7-1. Magnetic seal; 7-2. Second sealing ring; 7-3. Second magnet; 7-4. Float ball; 7-5. Acrylic rod; 7-6. Guide rail; 7-7. Guide block. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-4 The present invention will be described in further detail below.

[0032] Please refer to the attached diagram in the instruction manual. Figure 1 This utility model provides an embodiment of a self-draining prefabricated cable joint well, comprising a cable joint well body 1 and a drainage point 6. The drainage point 6 is located on one side of the cable joint well body 1. An opening is provided at the top of the cable joint well body 1, and a cover plate 2 is installed on the top of the cable joint well body 1. A flange is provided at the top edge of the cable joint well body 1, and a concave flange matching the flange is provided at the bottom edge of the cover plate 2. This makes the cable joint well body 1 and the cover plate 2 fit more snugly when connected.

[0033] Please refer to the attached diagram in the instruction manual. Figure 1 The cable joint well body 1 has openings on its side wall for cable entry and exit. The cover plate 2 is made of precast reinforced concrete, making it more durable and thus extending its service life.

[0034] Please refer to the attached diagram in the instruction manual. Figure 1Several cable supports 3 are installed on the side walls of both sides of the inner cavity of the cable joint well body 1. A water collection tank 4 is set at the bottom of the inner cavity of the cable joint well body 1. The outer wall of the cable support 3 is coated with a polyethylene anti-corrosion layer. Sufficient distance is provided between the bottom of the cable support 3 and the top of the water collection tank 4 to ensure that the cable will not be soaked in water.

[0035] Please refer to the attached diagram in the instruction manual. Figure 1 , Figure 2 and Figure 4 The bottom of the water collection tank 4 is provided with a drain hole 4-1, and the top of the drain point 6 is lower than the top of the drain hole 4-1. A vertical pipe 5-1 is provided at the outlet of the drain point 6. This reduces the possibility of the communicating vessel failing due to the drop in water level at the drain point 6 during a long dry season.

[0036] Please refer to the attached diagram in the instruction manual. Figure 1 and Figure 2 A drain pipe 5 is connected to the bottom of the drain hole opening 4-1. The end of the drain pipe 5 away from the drain hole opening 4-1 is connected to the drain point 6. A magnetic switch 7 is provided at the top of the drain hole opening 4-1. A first magnet 4-2 is provided at the lower edge of the drain hole opening 4-1 and is magnetically connected to the magnetic switch 7. A first sealing ring 4-3 is provided at the upper edge of the drain hole opening 4-1. The magnetic connection between the first magnet 4-2 and the magnetic switch 7 allows the drain hole opening 4-1 to be sealed. At the same time, the first sealing ring 4-3 ensures that air cannot enter the hole when the drain hole opening 4-1 is closed.

[0037] Please refer to the attached diagram in the instruction manual. Figure 1 and Figure 3 The magnetic switch 7 has a magnetic seal 7-1 at the bottom. The magnetic seal 7-1 has a second sealing ring 7-2 inside. The size of the second sealing ring 7-2 matches the size of the first sealing ring 4-3. The second magnet 7-3 is located in the middle of the second sealing ring 7-2.

[0038] Please refer to the attached diagram in the instruction manual. Figure 1 and Figure 3The magnetic switch 7 has a float 7-4 on its upper part, and an acrylic rod 7-5 is connected between the float 7-4 and the second magnet 7-3. Guide rails 7-6 are provided on both sides of the inner wall of the water collection tank 4. Guide blocks 7-7 that slide with the guide rails 7-6 are installed on both sides of the second sealing ring 7-2. During drainage, the drain point 6 is connected to the external water pipe, and the second magnet 7-3 is separated from the first magnet 4-2, so that the magnetic switch 7 is in the open state. Water is supplied to the cable connector well body 1, the float 7-4 floats on the water surface, and the water is discharged through the drain hole 4-1 until the water collection tank 4 begins to overflow. Then, the second sealing ring 7-2 is pushed downwards, causing the second magnet 7-3 to move downwards, so that the second magnet 7-3 and the first magnet 4-2 are magnetically connected. At this time, the magnetic switch 7 is in the closed state.

[0039] Please refer to the attached diagram in the instruction manual. Figures 1-4 The construction method for a self-draining prefabricated cable joint well is shown below, with the specific steps as follows:

[0040] S1: Assemble the various components in the main body 1 of the cable joint well, install the bottom drain pipe 5, and snap the magnetic switch 7 into the guide block 7-7 of the water collection tank 4.

[0041] S2: Place the cable joint well body 1 into the predetermined position, then pull out the drainage pipe 5 from the bottom of the water collection tank 4 and bury it in the nearby drainage point 6. Between the cable joint well body 1 and the drainage point 6, the drainage pipe 5 can be placed on the ground surface or shallowly buried in the cover soil to reduce the amount of excavation. Install a section of vertical pipe 5-1 at the drainage point 6 and connect it to the drainage pipe 5.

[0042] S3: Connect the drain point 6 to the external water pipe, move the float 7-4 upward, and the float 7-4 drives the second magnet 7-3 and the second sealing ring 7-2 to move upward through the acrylic rod 7-5, thereby separating the second magnet 7-3 from the first magnet 4-2. After the magnetic switch 7 is kept in the open state, water is supplied to the cable joint well body 1, and the float 7-4 floats on the water surface until the water collection tank 4 in the cable joint well body 1 begins to overflow, pushing the float 7-4 downward, so that the second magnet 7-3 and the first magnet 4-2 are magnetically connected, closing the magnetic switch 7 and disconnecting the external water pipe.

[0043] S4: The cable installation is completed by several cable brackets 3. Finally, the cover plate 2 is placed on the top of the cable joint well body 1 to ensure that the concave edges of the cover plate 2 are engaged in the convex edges of the cable joint well body 1, so that the cable joint well body 1 and the cover plate 2 fit together more closely when connected.

[0044] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A self-draining prefabricated cable joint well, comprising a cable joint well body (1) and a drainage point (6), wherein the drainage point (6) is located on one side of the cable joint well body (1), characterized in that: Several cable brackets (3) are installed on the side walls of the inner cavity of the cable connector well body (1). A water collection tank (4) is provided at the bottom of the inner cavity of the cable connector well body (1). A drainage hole (4-1) is provided at the bottom of the water collection tank (4). A drainage pipe (5) is connected to the bottom of the drainage hole (4-1). The end of the drainage pipe (5) away from the drainage hole (4-1) is connected to the drainage point (6). A magnetic switch (7) is provided at the top of the drainage hole (4-1).

2. The self-draining prefabricated cable joint well according to claim 1, characterized in that: The cable joint well body (1) has an opening at the top and a cover plate (2) is installed on the top of the cable joint well body (1). A flange is provided at the edge of the top of the cable joint well body (1), and a concave flange matching the flange is provided at the bottom edge of the cover plate (2).

3. The self-draining prefabricated cable joint well according to claim 1, characterized in that: An opening is provided on the side wall of the main body (1) of the cable joint well.

4. A self-draining prefabricated cable joint well according to claim 2, characterized in that: The cover plate (2) is made of precast reinforced concrete.

5. A self-draining prefabricated cable joint well according to claim 1, characterized in that: The outer wall of the cable bracket (3) is coated with a polyethylene anti-corrosion layer.

6. A self-draining prefabricated cable joint well according to claim 1, characterized in that: The height of the top of the drainage point (6) is lower than the height of the top of the drainage hole opening (4-1), and a vertical pipe (5-1) is provided at the outlet of the drainage point (6).

7. A self-draining prefabricated cable joint well according to claim 1, characterized in that: The lower edge of the drain hole opening (4-1) is provided with a first magnet (4-2) that is magnetically connected to the magnetic switch (7), and the upper edge of the drain hole opening (4-1) is provided with a first sealing ring (4-3).

8. A self-draining prefabricated cable joint well according to claim 7, characterized in that: The magnetic switch (7) has a magnetic seal (7-1) at its lower part, and a second sealing ring (7-2) is provided inside the magnetic seal (7-1). The size of the second sealing ring (7-2) matches the size of the first sealing ring (4-3). A second magnet (7-3) is provided in the middle of the second sealing ring (7-2). A float (7-4) is provided at the upper part of the magnetic switch (7). An acrylic rod (7-5) is connected between the float (7-4) and the second magnet (7-3). Guide rails (7-6) are provided on both sides of the inner wall of the water collection tank (4). Guide blocks (7-7) that slide with the guide rails (7-6) are installed on both sides of the second sealing ring (7-2).

Images