Underwater oil leakage first-aid repair device applied to oil-filled cable

Abstract

The utility model relates to an underwater oil leakage first-aid repair device applied to an oil-filled cable, and belongs to the technical field of cable first-aid repair, the underwater oil leakage first-aid repair device comprises an upper oil tank shell, a lower oil tank shell, an upper glue pouring shell, a lower glue pouring shell, a glue injection port, an oil discharge port and a sealing mechanism, the upper oil tank shell is arranged on the cable, the lower oil tank shell is detachably arranged on the upper oil tank shell, and the lower oil tank shell is detachably arranged on the lower oil tank shell. The upper glue filling shell flange is arranged on the upper oil tank shell, the upper glue filling shell is located at the cable oil seepage position, the lower glue filling shell flange is arranged on the lower oil tank shell, the glue filling opening is formed in the upper glue filling shell in a communicating mode, and the oil discharging opening is formed in the upper oil tank shell in a communicating mode. And the sealing mechanism is arranged on the lower glue filling shell and is used for sealing the upper glue filling shell and the lower glue filling shell. According to the invention, the problem that the marine environment is polluted due to the fact that the oil-filled cable is difficult to maintain underwater is solved.

Description

Technical Field

[0001] This application relates to the field of cable repair technology, and in particular to an underwater oil leak repair device for oil-filled cables. Background Technology

[0002] Widely used high-voltage and ultra-high-voltage AC submarine cables mainly fall into three insulation types: oil-filled submarine cables, paper-impregnated insulated submarine cables, and cross-linked polyethylene insulated submarine cables. Each of these three insulation types has its own advantages and disadvantages in terms of technology and economy.

[0003] Oil-filled cables have the advantages of long application time and rich operating experience. However, because oil-filled cables have an oil supply system, their structure is more complex. Furthermore, the metal sheath of oil-filled cables is a lead sheath, which has poor mechanical strength and is prone to creep and fatigue cracking. Under long-term disturbance by ocean currents in seawater, it is easy to develop cracks, leading to oil leakage. Due to the complexity of the structure of oil-filled cables and the complexity of the underwater environment, operation and maintenance are inconvenient. After an oil leakage accident, repairs are difficult and it is easy to pollute the marine environment. Utility Model Content

[0004] To address the problem of marine environmental pollution caused by the difficulty of underwater repair of oil-filled cables, this application provides an underwater oil leak repair device for oil-filled cables.

[0005] This application provides a technical solution for an underwater oil leak repair device for oil-filled cables:

[0006] An underwater oil leak repair device for oil-filled cables includes an upper oil tank shell, a lower oil tank shell, an upper glue-filling shell, a lower glue-filling shell, a glue inlet, an oil outlet, and a sealing mechanism. The upper oil tank shell is mounted on the cable, and the lower oil tank shell is detachably mounted on the upper oil tank shell. An oil tank for oil leakage is formed between the inner walls of the upper and lower oil tank shells and the cable. The upper glue-filling shell flange is mounted on the upper oil tank shell and is located at the oil leakage point of the cable. The lower glue-filling shell flange is mounted on the lower oil tank shell. A glue-filling chamber for sealant injection is formed between the inner walls of the upper and lower glue-filling shells and the cable. The glue-filling chamber is connected to the oil tank. The glue inlet is connected to the upper glue-filling shell, and the oil outlet is connected to the upper oil tank shell. The sealing mechanism is mounted on the lower glue-filling shell and is used to seal the upper and lower glue-filling shells.

[0007] By adopting the above technical solution, workers first fasten the upper oil tank shell to the cable, and then install the lower oil tank shell from below the cable onto the upper oil tank shell. The upper and lower oil tank shells cover the cable, forming an oil tank between the inner walls of the upper and lower oil tank shells and the cable. Then, the flange of the upper glue-filling shell is installed onto the upper oil tank shell, covering the oil-leaking part of the cable. The flange of the lower glue-filling shell is installed onto the lower glue-filling shell, and the upper and lower glue-filling shells are sealed by a sealing mechanism, forming a glue-filling chamber between the inner walls of the upper and lower glue-filling shells and the cable. Subsequently, glue is injected into the glue-filling chamber through the glue injection port. During the glue injection process, the oil seeping out of the glue-filling chamber is squeezed into the oil tank, causing the glue-filling chamber to depressurize. The oil in the oil tank is then pumped out through the oil discharge port, thereby performing underwater repairs on the oil-filled cable and improving the problem of marine environmental pollution caused by the difficulty of underwater repairs of oil-filled cables.

[0008] Optionally, the sealing mechanism includes a sealing ring, a locking bolt, and a locking nut. Multiple sealing rings are sleeved on the cable. The sealing rings abut against the inner walls of the upper and lower glue-filling housings. The locking bolt is disposed on the lower glue-filling housing and passes through the upper glue-filling housing. The locking nut is threaded onto the locking bolt.

[0009] By adopting the above technical solution, the workers put multiple sealing rings on the cable and move the sealing rings to both ends of the upper and lower glue-filling housings. Then, the locking bolts are passed through the upper glue-filling housing and the locking nuts are tightened, so that the upper and lower glue-filling housings are fastened together. The two ends of the upper and lower glue-filling housings are pressed against the sealing rings, thus sealing the upper and lower glue-filling housings and improving the sealing performance of the glue-filling chamber.

[0010] Optionally, the upper glue-filling housing has grooves on the side facing the lower glue-filling housing and the lower glue-filling housing has grooves on the side facing the upper glue-filling housing for the sealing ring to be inserted.

[0011] By adopting the above technical solution, the sidewall of the groove abuts against the sealing ring, limiting the sealing ring and improving the stability of the sealing ring pressing against the upper and lower glue filling shells, thereby improving the stability of sealing the glue filling chamber.

[0012] Optionally, the locking bolt is hinged to the lower glue-filling housing, and the upper glue-filling housing has a slot for the locking bolt to be engaged.

[0013] By adopting the above technical solution, the operator can rotate the locking bolt so that the locking bolt is inserted into the slot from the side, and then pass the locking bolt through the upper glue-filling housing, which improves the convenience for the operator to connect the lower glue-filling housing and the upper glue-filling housing.

[0014] Optionally, the flanges of the upper and lower glue-filling shells on the side away from the upper oil tank shell are provided with end caps.

[0015] By adopting the above technical solution, the workers connect the end cap flange to the side of the upper and lower glue-filled shells away from the upper oil tank shell. The end cap enhances the stability of the connection between the upper and lower glue-filled shells away from the upper oil tank shell.

[0016] Optionally, the end cap includes a left cap and a right cap, with the left cap flange connected to one side of the upper and lower glue-filling housings, and the right cap flange connected to the other side of the upper and lower glue-filling housings.

[0017] By adopting the above technical solution, the workers first connect the left cover flange to one side of the upper and lower glue-filling housings. At this time, the left cover can position the upper and lower glue-filling housings. Then, the right cover flange is connected to the other side of the upper and lower glue-filling housings, reducing the number of flange holes that need to be aligned when connecting the cover flange to the upper and lower glue-filling housings, and improving the convenience of installing the end cover.

[0018] Optionally, both the left and right covers are provided with abutting parts for pressing against the sealing ring.

[0019] By adopting the above technical solution, the clamping part is clamped to the sealing ring, further improving the sealing performance between the upper and lower glue-filled shells and the cable at the ends away from the upper oil tank shell.

[0020] Optionally, both the upper and lower oil tank shells are equipped with multiple handles.

[0021] By adopting the above technical solution, the handle makes it easier for workers to pick up and put down the upper and lower oil tank shells, improving the convenience of installing the upper and lower oil tank shells.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. Glue is injected into the glue filling tank through the glue injection port. During the glue injection process, the oil that seeps out of the glue filling tank is squeezed into the oil tank, which causes the glue filling tank to depressurize. The oil in the oil tank is then pumped out through the oil discharge port, thereby enabling underwater repair of the oil-filled cable at the oil leakage point and improving the problem of marine environmental pollution caused by the difficulty of underwater repair of oil-filled cables.

[0024] 2. The operator rotates the locking bolt so that it engages with the slot from the side, allowing the locking bolt to pass through the upper glue-filling housing, thus improving the convenience of connecting the lower and upper glue-filling housings.

[0025] 3. First, connect the left cover flange to one side of the upper and lower glue-filling housings. At this time, the left cover can position the upper and lower glue-filling housings. Then, connect the right cover flange to the other side of the upper and lower glue-filling housings. This reduces the number of flange holes that need to be aligned when connecting the cover flange to the upper and lower glue-filling housings, and improves the convenience of installing the end cover. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the underwater oil leak repair device applied to oil-filled cables according to an embodiment of this application.

[0027] Figure 2 This is a partial cross-sectional view of an embodiment of this application.

[0028] Reference numerals: 1. Upper oil tank shell; 2. Lower oil tank shell; 3. Upper glue-filling shell; 4. Lower glue-filling shell; 5. Glue inlet; 6. Oil discharge port; 7. Sealing mechanism; 71. Sealing ring; 72. Locking bolt; 73. Locking nut; 8. Groove; 9. End cap; 91. Left cap; 92. Right cap; 10. Abutment part; 11. Handle. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0030] This application discloses an underwater oil leak repair device for oil-filled cables.

[0031] Reference Figure 1 , Figure 2 The underwater oil leak repair device for oil-filled cables includes an upper oil tank shell 1, a lower oil tank shell 2, an upper glue-filling shell 3, a lower glue-filling shell 4, a glue-injection port 5, an oil discharge port 6, and a sealing mechanism 7. The upper oil tank shell 1 is fastened to the upper half of the cable, and the lower oil tank shell 2 is fastened to the lower half of the cable. The lower oil tank shell 2 is detachably installed on the upper oil tank shell 1, so that an oil tank for oil leakage is formed between the inner walls of the upper oil tank shell 1 and the lower oil tank shell 2 and the cable. In this embodiment, multiple bolts are hinged at intervals along the length of the lower oil tank shell 2. A locking groove is opened on the side of the upper oil tank shell 1. When the operator rotates the bolt close to the upper oil tank shell 1, the bolt is locked into the locking groove. Then, when the nut is tightened, the head of the bolt and the nut clamp the upper oil tank shell 1 and the lower oil tank shell 2, thereby realizing the closed sleeve of the upper oil tank shell 1 and the lower oil tank shell 2 on the cable.

[0032] Reference Figure 1 , Figure 2Both the upper oil tank hull 1 and the lower oil tank hull 2 ​​are equipped with multiple handles 11. When the workers install the upper oil tank hull 1 and the lower oil tank hull 2 ​​onto the cable, the handles 11 make it easier for the workers to pick up and put the upper oil tank hull 1 and the lower oil tank hull 2, thereby improving the convenience of installing the upper oil tank hull 1 and the lower oil tank hull 2.

[0033] Reference Figure 1 , Figure 2 The upper glue-filling housing 3 is flanged and connected to the end of the upper oil tank housing 1. The upper glue-filling housing 3 is located in the upper half of the oil leakage part of the cable. The lower glue-filling housing 4 is flanged and connected to the end of the lower oil tank housing 2. The lower glue-filling housing 4 and the upper glue-filling housing 3 are fastened together, so that the inner wall of the upper glue-filling housing 3 and the lower glue-filling housing 4 forms a glue-filling chamber for filling with sealant between the cable. In this embodiment, through holes are opened at the abutment of the upper glue-filling housing 3 and the upper oil tank housing 1, so as to realize the communication between the glue-filling chamber and the oil tank.

[0034] Reference Figure 1 , Figure 2 The sealing mechanism 7 is installed on the lower glue-filling housing 4. The sealing mechanism 7 is used to seal the upper glue-filling housing 3 and the lower glue-filling housing 4. The sealing mechanism 7 includes a sealing ring 71, a locking bolt 72, and a locking nut 73. Two sealing rings 71 are sleeved on the cable, and the two sealing rings 71 are respectively used to abut against the two ends of the upper glue-filling housing 3 and the lower glue-filling housing 4. Grooves 8 are provided on the side of the upper glue-filling housing 3 facing the lower glue-filling housing 4 and the side of the lower glue-filling housing 4 facing the upper glue-filling housing 3. The sealing rings 71 are engaged in the grooves 8. The abutment between the sidewall of the groove 8 and the sealing ring 71 not only limits the position of the sealing ring 71 but also improves the stability of the sealing ring 71 against the upper glue-filling housing 3 and the lower glue-filling housing 4, thereby improving the stability of sealing the glue-filling chamber.

[0035] Reference Figure 1 , Figure 2 The locking bolt 72 is hinged to the lower glue-filling housing 4. A groove is provided on the upper glue-filling housing 3 along the rotation path of the locking bolt 72. The locking nut 73 is threaded onto the locking bolt 72. After connecting the flange of the upper glue-filling housing 3 to the upper oil tank housing 1 and the flange of the lower glue-filling housing 4 to the lower glue-filling housing 4, the operator rotates the locking bolt 72, causing the locking nut 73 to engage in the groove. Then, the operator tightens the locking nut 73 against the upper oil tank housing 1, thus easily engaging and locking the upper and lower glue-filling housings 3 and 4 together, and pressing them against the sealing ring 71, thereby improving the sealing performance of the glue-filling chamber.

[0036] Reference Figure 1 , Figure 2End caps 9 are installed on the side of the upper glue-filling shell 3 and the lower glue-filling shell 4 away from the upper oil tank shell 1. The end caps 9 include a left cap 91 and a right cap 92. The left cap 91 is flanged and connected to one side of the upper glue-filling shell 3 and the lower glue-filling shell 4. The connection line between the left cap 91 and the upper glue-filling shell 3 and the lower glue-filling shell 4 is perpendicular to the connection line between the left cap 91 and the upper glue-filling shell 3 and the lower glue-filling shell 4. The right cap 92 is flanged and connected to the other side of the upper glue-filling shell 3 and the lower glue-filling shell 4. Both the left cap 91 and the right cap 92 are equipped with a pressing part 10, which presses against the sealing ring 71.

[0037] After the workers fasten and install the upper glue-filling housing 3 and the lower glue-filling housing 4, they first connect the left cover 91 flange to one side of the upper glue-filling housing 3 and the lower glue-filling housing 4 in the horizontal direction, and then connect the right cover 92 flange to the other side of the upper glue-filling housing 3 and the lower glue-filling housing 4. The left cover 91 and the right cover 92 can lock the side of the upper glue-filling housing 3 and the lower glue-filling housing 4 away from the upper oil tank housing 1, improving the stability of the connection on the side of the upper glue-filling housing 3 and the lower glue-filling housing 4 away from the upper oil tank housing 1. At the same time, the pressing part 10 can also press the sealing ring 71, further improving the connection between the upper glue-filling housing 3 and the lower glue-filling housing 4 away from the upper oil tank housing. The sealing between one end of body 1 and the cable is improved. Furthermore, by adopting a split design of left cover 91 and right cover 92, when the flange of left cover 91 is connected to the upper glue-filling housing 3 and the lower glue-filling housing 4, it is only necessary to align the flange holes on left cover 91 with those on upper glue-filling housing 3 and lower glue-filling housing 4. After the left cover 91 is installed, upper glue-filling housing 3 and lower glue-filling housing 4 can be positioned. At this time, the flange holes on the other side of upper glue-filling housing 3 and lower glue-filling housing 4 can be directly aligned with right cover 92. This reduces the number of flange holes that need to be aligned when connecting the cover flange to upper glue-filling housing 3 and lower glue-filling housing 4, making it easier to install end cover 9.

[0038] Reference Figure 1 , Figure 2 One glue injection port 5 is connected to both the upper glue filling shell 3 and the lower glue filling shell 4, and one oil discharge port 6 is connected to both the upper oil tank shell 1 and the lower oil tank shell 2. In this embodiment, valves are installed on both the glue injection port 5 and the oil discharge port 6 to facilitate the staff to control whether the glue injection port 5 and the oil discharge port 6 are closed.

[0039] The implementation principle of an underwater oil leak repair device for oil-filled cables according to an embodiment of this application is as follows: Workers lower the upper oil tank shell 1, lower oil tank shell 2, upper glue-filling shell 3, and lower glue-filling shell 4 to the cable using a hoist. Then, the upper oil tank shell 1 and lower oil tank shell 2 are installed onto the cable, forming an oil tank for oil leakage between the inner walls of the upper and lower oil tank shells 1 and the cable. A sealing ring 71 is then fitted onto the cable, and the flange of the upper glue-filling shell 3 is installed onto the upper oil tank shell 1, and the flange of the lower glue-filling shell 4 is installed onto the lower oil tank shell 2. The upper glue-filling shell 3 and lower glue-filling shell 4 are then fastened together using locking bolts 72 and locking nuts 73. The upper and lower glue-filling shells 3 and 4 are tightened to form a glue-filling chamber at the oil leakage point of the cable. Then, the end cap 9 is installed on the side of the upper and lower glue-filling shells 3 and 4 away from the upper oil tank shell 1. Then, the glue injection equipment is connected to the glue injection port 5 to inject glue into the glue-filling chamber. During the glue injection process, the pressure inside the glue-filling chamber increases, which squeezes the oil seeping out of the glue-filling chamber into the oil tank, thereby depressurizing the glue-filling chamber. At the same time, the staff connects the oil pumping equipment to the oil discharge port 6 to pump the oil in the oil tank to the sea surface for storage. After the glue in the glue-filling chamber solidifies, underwater repair of the oil leakage point of the oil-filled cable can be achieved, which improves the problem of marine pollution caused by the difficulty of underwater repair of oil-filled cables.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An underwater oil leakage repair device applied to oil-filled cable, characterized in that: The utility model provides an oil tank and glue filling device for cable, which comprises an upper oil tank shell (1), a lower oil tank shell (2), an upper glue filling shell (3), a lower glue filling shell (4), a glue injection port (5), an oil discharge port (6) and a sealing mechanism (7), the upper oil tank shell (1) is arranged on the cable, the lower oil tank shell (2) is detachably arranged on the upper oil tank shell (1), the inner wall between the upper oil tank shell (1) and the lower oil tank shell (2) and the cable forms an oil tank for oil seepage, the upper glue filling shell (3) is flange arranged on the upper oil tank shell (1), the upper glue filling shell (3) is located at the cable oil seepage part, the lower glue filling shell (4) is flange arranged on the lower oil tank shell (2), the inner wall between the upper glue filling shell (3) and the lower glue filling shell (4) and the cable forms a glue filling tank for sealing glue, the glue filling tank is communicated with the oil tank, the glue injection port (5) is communicated and arranged on the upper glue filling shell (3), the oil discharge port (6) is communicated and arranged on the upper oil tank shell (1), and the sealing mechanism (7) is arranged on the lower glue filling shell (4) and is used for sealing the upper glue filling shell (3) and the lower glue filling shell (4).

2. The underwater oil leakage repairing device applied to oil-filled cable according to claim 1, characterized in that: The sealing mechanism (7) comprises a sealing ring (71), a locking bolt (72) and a locking nut (73), a plurality of sealing rings (71) are sleeved on the cable, the sealing ring (71) is abutted on the inner wall of the end of the upper glue filling shell (3) and the lower glue filling shell (4), the locking bolt (72) is arranged on the lower glue filling shell (4), the locking bolt (72) passes through the upper glue filling shell (3), and the locking nut (73) is threadedly arranged on the locking bolt (72).

3. The underwater oil leakage repairing device applied to oil-filled cable according to claim 2, characterized in that: The side of the upper glue filling shell (3) towards the lower glue filling shell (4) and the side of the lower glue filling shell (4) towards the upper glue filling shell (3) are both provided with a groove (8) for clamping the sealing ring (71).

4. The underwater oil leakage repairing device applied to oil-filled cable according to claim 2, characterized in that: The locking bolt (72) is hingedly arranged on the lower glue filling shell (4), and a clamping groove is formed in the upper glue filling shell (3) for clamping the locking bolt (72).

5. The underwater oil leakage repairing device applied to oil-filled cable according to claim 1, characterized in that: The side flanges of the upper glue filling shell (3) and the lower glue filling shell (4) away from the upper oil tank shell (1) are provided with end covers (9).

6. The underwater oil leakage repairing device applied to oil-filled cable according to claim 5, characterized in that: The end cover (9) comprises a left cover (91) and a right cover (92), the left cover (91) is flange connected to one side of the upper glue filling shell (3) and the lower glue filling shell (4), and the right cover (92) is flange connected to the other side of the upper glue filling shell (3) and the lower glue filling shell (4).

7. An underwater oil leakage repair device applied to oil-filled cable according to claim 6, characterized in that: The left cover (91) and the right cover (92) are both provided with an abutting part (10) for abutting to the sealing ring (71).

8. The device for underwater repair of oil leakage according to claim 1, characterized in that it comprises: A plurality of handles (11) are arranged on the upper oil tank shell (1) and the lower oil tank shell (2).

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