A drying treatment system for damp high voltage cables

Abstract

The present application relates to a drying treatment system for damp high-voltage cables, and relates to the technical field of cable laying, which includes an air filter, an air drying mechanism, a vacuum pump, and a water storage tank arranged in sequence, the air filter and the air drying mechanism are connected, the vacuum pump and the water storage tank are connected, and the outlet end of the air drying mechanism and the inlet end of the vacuum pump are both provided with joints, and a pair of joints are used to cover the two ends of the connecting cable. The present application adopts the vacuum pumping principle to extract the water and moisture in the cable to achieve the drying treatment of the cable, achieve the best effect with the least expenditure, and at the same time ensure the stable laying of the cable and the safety during use.

Description

Technical Field

[0001] The present application relates to the field of cable laying, and in particular to a drying treatment system for damp high-voltage cables. Background Art

[0002] Cable laying refers to the process of laying and installing cables along the surveyed roads to form cable lines. According to the different places where the cables are used, there are several laying methods, such as overhead, underground, underwater, wall and tunnel.

[0003] When traditional cables are stored improperly, it is easy to cause moisture inside the cable, which can cause short circuits and explosions. If the cable is replaced, it will cause additional expenses, so it is particularly important to dry the moisture inside the high-voltage cable. Summary of the invention

[0004] In order to achieve drying treatment of damp high-voltage cables, the present application provides a drying treatment system for damp high-voltage cables.

[0005] The present application provides a drying system for damp high-voltage cables using the following technical solutions:

[0006] A drying treatment system for damp high-voltage cables comprises an air filter, an air drying mechanism, a vacuum pump and a water storage tank which are arranged in sequence, the air filter and the air drying mechanism are connected, the vacuum pump and the water storage tank are connected, the outlet end of the air drying mechanism and the inlet end of the vacuum pump are both provided with connectors, and a pair of the connectors are used to cover the two ends of the connecting cable.

[0007] By adopting the above technical solution, when it is necessary to dry the damp cable, a pair of connectors are fixed to both ends of the cable, and then the inside of the cable is vacuumed using a vacuum pump. At the same time, the end of the cable away from the vacuum pump is the air inlet end. At this time, the air at the air inlet end is first filtered by the air filter and dried by the air drying mechanism, and then the dry air enters the cable to force out the water in the cable, thereby achieving the drying of the cable. Therefore, by adopting the vacuum principle, the moisture and humidity in the cable are extracted to achieve the drying of the cable, achieving the best effect with the least expenditure, while ensuring the stable laying of the cable and the safety during use.

[0008] Optionally, the connector includes a connecting pipe, which is used to be inserted into the insulation sheath of the cable, and the connector is provided with a locking mechanism for fixing the insulation sheath of the cable.

[0009] By adopting the above technical solution, when connecting the cable, the insulation skins at both ends of the cable are wrapped and fixed on the outer wall of the pipe, and the internal structure of the cable is located in the pipe, so that the two ends of the cable are closed, which is conducive to vacuuming. At the same time, the pipe is used to open the two ends of the cable insulation skin to ensure the stable entry of dry air and the stable discharge of water and moisture in the cable, so as to achieve stable vacuuming of the cable.

[0010] Optionally, the locking mechanism includes a pair of locking rods and a pair of locking plates, the pair of locking rods are hingedly arranged on both sides of the connecting pipe, and the pair of locking plates are hingedly arranged at the end of the locking rods away from the connecting pipe, the locking plates are arranged in a semicircular shape and are used to clamp the outer wall of the cable insulation skin, the outer wall of each locking plate is provided with a semicircular locking plate, the inner side wall of the locking plate is provided with a dovetail strip, and the outer wall of the locking plate is provided with a dovetail groove for the dovetail strip to slide.

[0011] By adopting the above technical solution, when fixing the cable insulation, the locking rod and the locking piece are controlled to flip, so that the pair of locking pieces form a circle and cover the outer wall of the cable insulation. Then the locking plate is controlled to drive the dovetail bar to slide, so that the two ends of the dovetail bar are respectively located in the dovetail grooves on the pair of locking pieces, so as to fix the locking piece and the cable insulation. Therefore, by setting a locking mechanism with an ingenious structure and convenient operation, the cable insulation is conveniently fixed.

[0012] Optionally, the inner side wall of the locking piece is provided with a convex strip.

[0013] By adopting the above technical solution, the friction between the locking piece and the cable insulation is increased by providing the convex strips, thereby ensuring the connection stability and sealing of the two.

[0014] Optionally, the air drying mechanism includes a drying box, a filter and dry lime powder, the filter is arranged in the drying box, the dry lime powder is arranged on the filter, the inlet end of the drying box is located below the filter, and the outlet end is located above the filter and aligned with the upper layer of the dry lime powder.

[0015] By adopting the above technical solution, when the air is dried, the air first enters the drying box and then passes through the dry lime powder. At this time, the water vapor in the air can be absorbed by the principle of water absorption of the dry lime powder to achieve air drying. Finally, the dry air is discharged along the outlet of the drying box and enters the cable. Therefore, by setting up an air drying mechanism with a high adsorption effect, stable drying of the air is achieved, ensuring the stable operation of the entire system.

[0016] Optionally, a brush plate is horizontally slidably connected inside the drying box, both ends of the brush plate abut against the inner wall of the drying box, and the upper end surface abuts against the lower end surface of the filter screen, and connecting rods extending to the outside of the drying box are horizontally arranged on both sides of the brush plate.

[0017] By adopting the above technical solution, after the dry lime powder is used for a period of time, the dry lime powder at the bottom will clump, affecting the water removal efficiency of the dry lime powder. At this time, the connecting rod is controlled to slide, and the agglomerated dry lime powder is brushed off by the brush plate, thereby ensuring the permeability and water removal efficiency of the dry lime powder.

[0018] Optionally, a switch plate located above the dry lime powder is horizontally slidably connected inside the drying box, both ends of the switch plate extend horizontally to the outside of the drying box, and spare lime powder located on the switch plate is provided inside the drying box; a long strip switch hole is horizontally provided on the switch plate, and the switch hole is located directly above the brush plate, sealing plates are horizontally provided on the inner walls on both sides of the drying box, the sealing plates are located above the switch plate and are used to cover the switch hole, and handles are provided between the switch plate and both ends of the connecting rod.

[0019] By adopting the above technical solution, when the control link drives the brush plate to brush off the dry lime powder in the lower layer, it will drive the switch plate to move synchronously, and with the movement of the switch plate, the spare lime powder on the switch plate will slide along the switch hole to replenish the dry lime powder, thereby ensuring the drying effect of the air and ensuring the stable drying treatment of the cable.

[0020] Optionally, the water storage tank includes a transparent tank body and an exhaust one-way valve, the upper side wall of the tank body is connected to the vacuum pump, and the exhaust one-way valve is arranged on the upper end surface of the tank body.

[0021] By adopting the above technical solution, when the pumped water is discharged, the air is discharged along the exhaust check valve, and the water is accumulated in the tank. And after a period of time, the height of the liquid level in the tank can be observed to determine whether the cable is dried, thereby realizing convenient drying of the cable.

[0022] Optionally, a ruler is vertically arranged in the tank body, a floating plate is arranged at the lower end of the ruler, and the upper end of the ruler passes through the upper end surface of the tank body.

[0023] By adopting the above technical solution, when the liquid level increases, the float and the ruler will be controlled to move synchronously, so the construction workers can accurately judge whether the liquid level height increases, thereby facilitating the construction workers to judge whether the cable is dried.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] By adopting the vacuum principle, the moisture and humidity in the cable are extracted to achieve cable drying, achieving the best effect with the least expenditure, while ensuring the stable laying of the cable and the safety during use;

[0026] By setting a high-sealing joint to connect the two ends of the cable, the stable entry of dry air and the stable discharge of moisture and humidity in the cable are ensured, thus achieving stable vacuuming of the cable;

[0027] By setting up an air drying mechanism with high adsorption effect, stable drying of the air can be achieved to ensure stable operation of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0029] Figure 2 It is a structural schematic diagram of the air drying mechanism in the embodiment of the present application.

[0030] Figure 3 It is a structural schematic diagram of the water storage tank in the embodiment of the present application.

[0031] Figure 4 It is a schematic diagram of the structure of the joint in the embodiment of the present application.

[0032] Explanation of the reference numerals: 1. air filter; 2. air drying mechanism; 21. drying box; 22. filter screen; 23. dry lime powder; 24. brush plate; 25. connecting rod; 26. switch plate; 261. switch hole; 27. handle; 28. spare lime powder; 29. ​​sealing plate; 3. vacuum pump; 4. water storage tank; 41. tank body; 42. exhaust check valve; 43. scale; 44. floating plate; 5. joint; 51. connecting pipe; 6. locking mechanism; 61. locking rod; 62. locking plate; 63. convex strip; 64. locking plate; 65. dovetail strip; 66. dovetail groove. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-4 This application is described in further detail.

[0034] The embodiment of the present application discloses a drying treatment system for damp high-voltage cables.

[0035] Reference Figure 1 The drying treatment system includes an air filter 1, an air drying mechanism 2, a vacuum pump 3 and a water storage tank 4 which are arranged in sequence.

[0036] Reference Figure 1The outlet of the air filter 1 and the inlet of the air drying mechanism 2 are connected through a pipeline, and the outlet of the vacuum pump 3 and the inlet of the water storage tank 4 are connected through a pipeline. The cable is located between the air drying mechanism 2 and the vacuum pump 3, and the outlet of the air drying mechanism 2 and the inlet of the vacuum pump 3 are connected to the two ends of the cable respectively.

[0037] When the damp cable needs to be dried, the two ends of the cable are respectively connected to the outlet of the air drying mechanism 2 and the inlet of the vacuum pump 3. Then the vacuum pump 3 is started to evacuate the inside of the cable, and the moisture and water vapor inside the cable are extracted and discharged into the water storage tank 4 to achieve moisture storage.

[0038] At the same time, when the cable is vacuumed, the permeability of the other end needs to be ensured, and considering that the humidity in the air may be relatively high, an air filter 1 and an air drying mechanism 2 are sequentially arranged at the end of the cable to filter and dry the outside air. This is used to ensure that clean and dry air enters the cable and forces the water out of the cable, thereby achieving stable drying of the cable.

[0039] When the water in the water storage tank 4 no longer increases, it means that the moisture inside the cable has been completely sucked out, that is, the cable is in a dry state. At this time, the two ends of the cable can be disassembled, and the processed cable is then laid.

[0040] Reference Figure 2 The air drying mechanism 2 includes a drying box 21, a filter screen 22 and dry lime powder 23.

[0041] Reference Figure 2 The filter screen 22 is horizontally arranged in the drying box 21 and is located in the middle of the drying box 21. The dry lime powder 23 is arranged on the filter screen 22, and the particle size of the dry lime powder 23 is larger than the aperture of the filter hole on the filter screen.

[0042] Reference Figure 2 The inlet end of the drying box 21 is located below the filter screen 22, and the outlet end is located above the filter screen 22. The outlet end of the drying box 21 is aligned with the upper layer of the dry lime powder 23 to ensure that the air can be discharged after being dried by the dry lime powder 23.

[0043] Reference Figure 2 A brush plate 24 is horizontally slidably connected in the drying box 21. The brush plate 24 is arranged horizontally, and both ends of the brush plate 24 abut against the inner wall of the drying box 21. The upper end surface of the brush plate 24 abuts against the lower end surface of the filter screen 22, and can pass through the filter screen 22 to scrape and dry the lime powder 23. At the same time, connecting rods 25 extending to the outside of the drying box 21 are horizontally arranged on both sides of the brush plate 24, and the connecting rods 25 are slidably connected to the drying box 21.

[0044] When the air is dried, the filtered air first enters the drying box 21 and then moves from bottom to top. Then the air dries the lime powder 23, and the water vapor in the air is removed by the principle of strong water absorption of the dry lime powder 23, so as to achieve the drying of the air. Finally, the dry air is discharged from the outlet of the drying box 21 and enters the cable.

[0045] After the dry lime powder 23 has been used for a period of time, it will become damp. In particular, the dry lime powder 23 at the bottom layer is prone to caking, which affects the water removal efficiency and work efficiency of the dry lime powder 23. At this time, the connecting rod 25 is controlled to slide back and forth horizontally, and the brush plate 24 is controlled to move synchronously by the connecting rod 25, and the agglomerated dry lime powder 23 at the bottom layer is brushed off, thereby ensuring the permeability and water removal efficiency of the dry lime powder 23.

[0046] Reference Figure 2 A switch plate 26 is horizontally slidably connected in the drying box 21, and the switch plate 26 is located above the dry lime powder 23. Both ends of the switch plate 26 extend horizontally to the outside of the drying box 21, and handles 27 are vertically connected between the switch plate 26 and both ends of the connecting rod 25.

[0047] Reference Figure 2 The drying box 21 contains spare lime powder 28 located on the switch plate 26, and the spare lime powder 28 is used to replenish the dry lime powder 23 in real time. A long strip switch hole 261 is horizontally arranged on the switch plate 26, and the length direction of the switch hole 261 is the same as the length direction of the brush plate 24, and is located directly above the brush plate 24, so as to discharge the spare lime powder 28 following the movement of the brush plate 24.

[0048] Reference Figure 2 The inner walls of both sides of the drying box 21 are horizontally provided with sealing plates 29, which are located above the switch plate 26 and are used to cover the switch hole 261. Therefore, when the brush plate 24 slides to the two end positions, the sealing plate 29 blocks the switch hole 261 to realize the opening and closing control of the switch hole 261.

[0049] When the dry lime powder 23 agglomerated at the bottom layer is brushed off, the total amount of the dry lime powder 23 will be reduced, which may affect the drying effect on the air. Therefore, by arranging the connecting rod 25 and the switch plate 26 together, the movement of the connecting rod 25 will drive the switch plate 26 to move synchronously.

[0050] And during the movement of the switch plate 26, the position of the switch hole 261 on the switch plate 26 will change, and the spare lime powder 28 will slide along the switch hole 261 onto the dry lime powder 23, so as to achieve timely replenishment of the dry lime powder 23 and ensure the drying effect of the dry lime powder 23.

[0051] Since the brush plate 24 is aligned with the switch hole 261, it can ensure that the scraped lime powder is replenished at the same place, realizing directional replenishment and fixed-point replenishment. At the same time, when replenishment is not needed or completed, the brush plate 24 can be controlled to move to the end position of the drying box 21, and the switch hole 261 can be moved to the bottom of the sealing plate 29 to achieve the blocking of the switch hole 261 and the separation of the dry lime powder 23 and the spare lime powder 28.

[0052] Reference Figure 1 , Figure 3 The water storage tank 4 includes a transparent tank body 41 and an exhaust check valve 42. The upper side wall of the tank body 41 is connected to the vacuum pump 3 so that the sucked water can be stored in the tank body 41. The exhaust check valve 42 is arranged on the upper end surface of the tank body 41 and can only limit other external discharge.

[0053] Reference Figure 3 A ruler 43 with scale lines is vertically arranged in the tank body 41 , a floating plate 44 made of foam material is arranged at the lower end of the ruler 43 , and the upper end of the ruler vertically penetrates the upper end surface of the tank body 41 and is vertically slidably connected to the tank body 41 .

[0054] When the pumped water is discharged, the water gradually accumulates at the bottom of the tank body 41, and as the water increases, the buoyancy of the water will control the floating plate 44 and the scale 43 to move upward. At the same time, the pumped air will be discharged along the exhaust check valve 42, and it is ensured that the outside air will not enter the tank body 41 to avoid backflow.

[0055] During the system operation time, the value of the scale 43 is observed and recorded for several times at intervals until the value remains unchanged, indicating that there is no more water increase. That is, the drying operation has been completed, so the entire system can be removed and the cable can be laid.

[0056] Reference Figure 1 , Figure 4 A connector 5 is provided at the outlet end of the air drying mechanism 2 and the inlet end of the vacuum pump 3. A pair of connectors 5 are used to cover and connect to the two ends of the cable, and the connectors 5 are sealed to the two ends of the cable.

[0057] Reference Figure 1 , Figure 4 The connector 5 comprises a steel pipe 51, which is used to be inserted into the insulation skin of the cable and to stretch the insulation skin so that the insulation skin at the end of the cable is expanded. At the same time, the cable part inside the cable is located in the pipe 51, ensuring that the water in the cable is pumped out.

[0058] Reference Figure 1 , Figure 4The connector 5 is also provided with a locking mechanism 6 for fixing the cable insulation to the outer wall of the insert tube, so as to achieve the fixation and sealing of both ends of the cable, so that the inner wall of the cable forms a sealed space, which is conducive to vacuum dehumidification.

[0059] Therefore, when connecting the cables, the insulation skins at both ends of the cables are stretched open and sleeved on the outer wall of the pipe 51, and the internal structure of the cables is completely located inside the pipe 51. The locking mechanism 6 is then used to fix the cable insulation skins, so that the inner wall of the cable forms a sealed space, thereby achieving a sealed connection of the cables, ensuring stable vacuuming of the cables, and preventing external humid air from entering the cables.

[0060] Reference Figure 4 The locking mechanism 6 includes a pair of locking rods 61 and a pair of locking plates 62. The pair of locking rods 61 are distributed on both sides of the pipe 51, one end of the locking rod 61 is hinged to the pipe 51, and the other end is hinged to the middle position of the locking plate 62.

[0061] Reference Figure 4 The locking piece 62 is arranged in a semicircular shape, and the side wall is provided with a convex strip 63 arranged along its circumferential direction. The locking piece 62 is used to clamp the outer wall of the cable insulation skin, and the convex strip 63 is used to press the outer wall of the cable insulation skin to increase the structural strength between the locking piece 62 and the cable insulation skin. And when a pair of locking pieces 62 clamp the outer wall of the cable insulation skin, the pair of locking pieces 62 are connected end to end to form a closed loop, and the convex strip 63 is pressed into the outer wall of the cable insulation skin.

[0062] Reference Figure 4 The outer wall of each locking piece 62 is provided with a semicircular locking plate 64, and the two ends of the locking plate 64 are flush with the two ends of the locking piece 62. The inner wall of the locking plate 64 is provided with a dovetail strip 65 arranged along its circumferential direction, and the two ends of the dovetail strip 65 are flush with the two ends of the locking piece 62. The outer wall of the locking piece 62 is provided with a dovetail groove 66 for the dovetail strip 65 to slide, and the two ends of the dovetail groove 66 pass through the two end surfaces of the locking piece 62.

[0063] When fixing the cable insulation, first control the locking rod 61 and the locking piece 62 to flip so that the pair of locking pieces 62 are clamped on the outer wall of the cable insulation. Then, press the pair of locking pieces 62 to move closer to each other so that the pair of locking pieces 62 form a closed loop and clamp the cable insulation.

[0064] Then, the lock plate 64 is controlled to drive the dovetail strip 65 to slide, so that half of the dovetail strip 65 is located in the dovetail groove 66 on one of the locking pieces 62, and the other half is located in the dovetail groove 66 on the other locking piece 62, and the pair of locking pieces 62 are fixed by the mortise and tenon joints, thereby fixing the cable insulation. At the same time, the release process of the locking mechanism 6 is the opposite, which will not be described in detail.

[0065] The implementation principle of the drying treatment system for damp high-voltage cables in the embodiment of the present application is as follows: when drying the damp cable, a pair of connectors 5 are sealed and fixed at both ends of the cable, and then the inside of the cable is vacuumed using a vacuum pump 3. At the same time, the air filter 1 and the air drying mechanism 2 are used to filter and dry the outside air, and clean and dry air is allowed to enter the cable to force out the water in the cable, thereby achieving the drying treatment of the cable.

[0066] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A drying system for damp high voltage cables, characterized in that: The invention comprises an air filter (1), an air drying mechanism (2), a vacuum pump (3) and a water storage tank (4) which are arranged in sequence. The air filter (1) is connected to the air drying mechanism (2), the vacuum pump (3) is connected to the water storage tank (4), the outlet end of the air drying mechanism (2) and the inlet end of the vacuum pump (3) are both provided with joints (5), a pair of the joints (5) are used to cover the two ends of the connecting cable, the air drying mechanism (2) comprises a drying box (21), a filter screen (22) and dry lime powder (23), the filter screen (22) is arranged in the drying box (21), the dry lime powder (23) is arranged on the filter screen (22), and the inlet end of the drying box (21) is located on the filter screen (22). The drying box (21) is provided with a brush plate (24) which is horizontally slidably connected therein, and the two ends of the brush plate (24) abut against the inner wall of the drying box (21), and the upper end surface abuts against the lower end surface of the filter screen (22). Connecting rods (25) which extend to the outside of the drying box (21) are horizontally arranged on both sides of the brush plate (24). A switch plate (26) which is located above the dry lime powder (23) is horizontally slidably connected therein, and the two ends of the switch plate (26) extend horizontally to the outside of the drying box (21). The drying box (21) is provided with spare lime powder (28) which is located on the switch plate (26); A long strip switch hole (261) is horizontally arranged on the switch plate (26), and the switch hole (261) is located directly above the brush plate (24). Sealing plates (29) are horizontally arranged on the inner walls on both sides of the drying box (21). The sealing plates (29) are located above the switch plate (26) and are used to cover the switch hole (261). At the same time, handles (27) are arranged between the switch plate (26) and the two ends of the connecting rod (25).

2. A drying treatment system for damp high voltage cables according to claim 1, characterized in that: The connector (5) comprises a connecting pipe (51) which is used to be inserted into the insulation skin of the cable, and a locking mechanism (6) for fixing the insulation skin of the cable is provided on the connector (5).

3. A drying treatment system for damp high voltage cables according to claim 2, characterized in that: The locking mechanism (6) comprises a pair of locking rods (61) and a pair of locking plates (62). The pair of locking rods (61) are hingedly arranged on both sides of the connecting pipe (51), and the pair of locking plates (62) are hingedly arranged at one end of the locking rods (61) away from the connecting pipe (51). The locking plates (62) are arranged in a semicircular shape and are used to clamp the outer wall of the cable insulation skin. The outer wall of each locking plate (62) is provided with a semicircular locking plate (64), and the inner wall of the locking plate (64) is provided with a dovetail strip (65). The outer wall of the locking plate (62) is provided with a dovetail groove (66) for the dovetail strip (65) to slide.

4. A drying treatment system for damp high voltage cables according to claim 3, characterized in that: The inner side wall of the locking piece (62) is provided with a convex strip (63).

5. The drying treatment system for damp high voltage cables according to claim 1, characterized in that: The water storage tank (4) comprises a transparent tank body (41) and an exhaust check valve (42); the upper end side wall of the tank body (41) is connected to the vacuum pump (3), and the exhaust check valve (42) is arranged on the upper end surface of the tank body (41).

6. A drying treatment system for damp high voltage cables according to claim 5, characterized in that: A scale (43) is vertically arranged in the tank body (41), a floating plate (44) is arranged at the lower end of the scale (43), and the upper end of the scale (43) passes through the upper end surface of the tank body (41).

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