A butyronitrile PVC composite sheath for wind power cable and a production equipment thereof

Abstract

The application belongs to the technical field of cable sheaths, and particularly relates to a butyronitrile PVC composite sheath for wind energy cables and a production equipment thereof, which comprises the following raw materials in parts: 100 parts of polyvinyl chloride resin, 10-15 parts of butyronitrile rubber, 50-60 parts of plasticizer, 20-40 parts of active calcium carbonate, 6-7 parts of stabilizer, 0.3-0.4 parts of lubricant, 0.9-3.0 parts of filler, 0.2-0.6 parts of accelerator, 6-10 parts of anti-cracking filler, and the anti-cracking filler comprises 40%-45% of magnesium hydroxide, 32%-35% of heavy calcium carbonate, 20%-28% of gypsum powder, 2%-3% of cellulose and 3%-5% of water reducing agent. The application adjusts the preparation materials of the cable sheath by the arrangement of corresponding mechanisms, improves the anti-cracking performance of the cable sheath, thereby better protecting the cable, and improves the production equipment of the butyronitrile PVC sheath, so that the waste gas generated in the extrusion process of the cable sheath can be fully purified, the discharge of harmful components is avoided, and the body of the workers is not damaged and the air is not polluted after the discharge.

Description

Technical Field

[0001] This invention belongs to the field of cable sheath technology, specifically relating to a nitrile PVC composite sheath for wind power cables and its production equipment. Background Technology

[0002] Wind energy, as a clean and renewable energy source, is receiving increasing attention from countries around the world. It possesses enormous reserves, with China boasting vast and widely distributed wind energy reserves. The total onshore wind energy reserves alone are approximately 3.226 billion kilowatts, of which about 253 million kilowatts are exploitable. According to national plans, the installed capacity of wind power generation nationwide will reach 20 to 30 million kilowatts in the next 15 years. Looking at the global growth of wind power generation in the past two years, wind turbines may grow at a rate of over 50% in the coming years, indicating a significant potential for the development and promotion of wind power.

[0003] There is a huge market demand for special cables for wind turbines used in conjunction with wind power projects, especially in coastal islands, remote mountainous areas with inconvenient transportation, sparsely populated grasslands and pastures, and desert border areas, where there is enormous development potential. Wind power generation projects are carried out in open-air environments, wind turbines are required to have a long service life, and cables are required to rotate frequently with the wind turbines in low-temperature environments.

[0004] The cable sheath protects the cable and needs to have good stability, excellent crack resistance, high safety performance, and long service life under low temperature conditions. The materials used for the sheath should also have good flexibility and good resistance to high and low temperatures.

[0005] Ordinary nitrile PVC sheathing materials contain more inorganic materials and less rubber, resulting in lower elongation at break and lower current capacity, thus shortening the cable's service life. Furthermore, the extrusion process of nitrile PVC sheathing generates waste gas, which current technology uses activated carbon for purification. However, the purification effect of activated carbon is very limited, meaning the emitted gas still poses a health risk to workers and pollutes the air, which is detrimental to environmental protection.

[0006] Therefore, in order to address the above-mentioned technical problems, it is necessary to provide a nitrile PVC composite sheath for wind power cables and its production equipment. Summary of the Invention

[0007] The purpose of this invention is to provide a nitrile PVC composite sheath for wind power cables and its production equipment, so as to solve the problems of easy cracking and damage of existing cable sheaths and the lack of waste gas treatment in sheath production equipment.

[0008] To achieve the above objectives, an embodiment of the present invention provides the following technical solution:

[0009] A nitrile-PVC composite sheath for wind power cables comprises the following raw materials in parts: 100 parts polyvinyl chloride resin; 10-15 parts nitrile rubber; 50-60 parts plasticizer; 20-40 parts activated calcium carbonate; 6-7 parts stabilizer; 0.3-0.4 parts lubricant; 0.9-3.0 parts filler; 0.2-0.6 parts accelerator; and 6-10 parts anti-cracking filler.

[0010] Furthermore, the stabilizer is made of lead cyanurate, the lubricant is barium stearate, the plasticizer is dioctyl sebacate, the filler is kaolin, and the accelerator is lead stearate.

[0011] Furthermore, the anti-cracking filler comprises: 40%-45% magnesium hydroxide, 32%-35% heavy calcium carbonate, 20%-28% gypsum powder, 2%-3% cellulose, and 3%-5% water-reducing agent.

[0012] A production equipment for nitrile PVC composite sheaths for wind power cables includes: an extrusion device, a first water spray purification mechanism, a triggering mechanism, a second neutralization purification mechanism, and a transfer mechanism.

[0013] A cooling tank frame is provided on one side of the extrusion equipment, and multiple support plates are fixed below the cooling tank frame;

[0014] The first water spray purification mechanism is located above the cooling tank frame. The first water spray purification mechanism includes an upper outer frame, a support frame is fixed inside the upper outer frame, a water storage cavity is carved out on the support frame, a waterproof cover is provided above the support frame, an air outlet pipe is inserted inside the waterproof cover, and a first fixing bolt is fixed on the waterproof cover.

[0015] The triggering mechanism is located inside the water storage chamber and is used to provide triggering conditions to facilitate the initiation of the second purification treatment of the exhaust gas.

[0016] The second neutralization and purification mechanism is located on one side of the upper outer frame. The second neutralization and purification mechanism includes a fixed cylinder, a lifting storage cylinder is provided inside the fixed cylinder, a lifting sealing bucket is provided above the lifting storage cylinder, a plurality of evenly distributed lower leakage holes are drilled on the lifting sealing bucket, a plurality of sealing sleeves are fixed on the lifting sealing bucket, a transmission gas pipe is slidably connected inside the sealing sleeve, a fixed column is connected between the transmission gas pipe and the fixed cylinder, and a plurality of air holes are drilled on the transmission gas pipe.

[0017] The transfer mechanism is located below the lifting storage cylinder, and the transfer mechanism is used to slowly discharge the purified liquid.

[0018] Furthermore, multiple motors are installed inside the support frame to provide power for sucking up exhaust gas. The output end of the motor is fixedly connected to a fan blade, and a fixing rod is connected between the motor and the support frame to fix the motor in place.

[0019] Furthermore, a water pump is installed outside the upper outer frame to provide power for extracting ammonia water, so that the ammonia water in the storage water chamber can be extracted and transported to the dispersion frame, and then sprayed out again, and then come into contact with the exhaust gas again, and thus fully absorb the ammonia gas. The water pump is connected to a water delivery pipe and a water extraction pipe, both of which are used to transport ammonia water.

[0020] Multiple second fixing bolts are fixed on the water delivery pipe to fix the water delivery pipe and prevent the water delivery pipe from shaking or shifting. A dispersion frame is installed on the upper outer frame to disperse and deliver the purified water and ammonia water into multiple spray pipes, and then spray them out from multiple nozzles to increase the spraying area of ​​the purified water and ammonia water.

[0021] Multiple spray pipes are fixed on the dispersion frame for delivering purified water and ammonia to the nozzles. One end of each spray pipe is fixedly connected to a nozzle for spraying the purified water and ammonia out, so that the purified water and ammonia come into full contact with the exhaust gas. A transmission pipe is also connected to the dispersion frame to facilitate the delivery of purified water to the upper outer frame.

[0022] Furthermore, the triggering mechanism includes a first fixed frame, which provides space for the floating block to rise and fall. The first fixed frame has multiple evenly distributed water-permeable holes, which facilitates the ammonia water to float the floating block. Thus, the floating block can also rise after the ammonia water level in the storage water chamber rises. A limit post is fixed in the first fixed frame to limit the rise and fall of the floating block.

[0023] A floating block is fitted on the limiting post to support the trigger block and to drive the trigger block to move up and down. The trigger block is fixed on the floating block, and an upper contact block is provided above the trigger block. The upper contact block is fixed on the first fixed frame. The trigger block is electrically connected to the control box, so that after the trigger block contacts the upper contact block, the control box can start the water pump and open the electric control valve.

[0024] Furthermore, a second fixing frame is fixed on the upper outer frame to fix the activated carbon and prevent it from falling off and moving. Activated carbon is installed inside the second fixing frame to purify the exhaust gas, thereby improving the purification effect of the exhaust gas. A connecting gas pipe is connected between the second fixing frame and the fixing cylinder to transfer the exhaust gas in the upper outer frame to the fixing cylinder.

[0025] The fixed cylinder has multiple vent holes for discharging the purified waste gas and preventing it from accumulating inside. The lifting storage cylinder has a limiting cavity, which allows the shape memory alloy block to be locked inside the limiting cavity after being heated and expanded, forming a self-locking mechanism. This prevents the lifting storage cylinder from rising and resetting, allowing the solution inside the lifting storage cylinder to be completely drained and preventing the solution from leaking into the fixed cylinder.

[0026] Furthermore, a fixed circular plate is fixed inside the fixed cylinder to isolate the space inside the fixed cylinder and prevent the gas after the second purification from flowing upward. Multiple limiting slide rods are connected between the fixed circular plate and the fixed cylinder to limit the support ring plate, so that the lifting storage cylinder will not shake. A support ring plate is fixed on the lifting storage cylinder, and multiple limiting slide rods are set through the support ring plate.

[0027] A push spring is connected between the support ring plate and the fixed cylinder to push the support ring plate, thereby enabling the lifting storage cylinder to move upward and reset, thus facilitating reuse.

[0028] Furthermore, the transfer mechanism includes a transfer block for sealing the bottom of the lifting storage cylinder to prevent the solution in the lifting storage cylinder from leaking into the fixed cylinder. The transfer block has a transfer hole for receiving the solution in the lifting storage cylinder, so that the solution can enter the drain pipe through the transfer hole and be discharged easily.

[0029] The adapter block is equipped with a shape memory alloy block, which expands and gets stuck in the limiting cavity, thereby locking the lifting storage cylinder and preventing it from resetting. The shape memory alloy block has the property of rapidly expanding when the temperature rises and shrinking back to its original size when the temperature returns to normal.

[0030] The alkaline solution of ammonia neutralizes the acidic components in the waste gas. The exothermic neutralization reaction raises the temperature of the solution in the lifting storage cylinder, which in turn raises the temperature of the shape memory alloy block through heat transfer. This allows the shape memory alloy block to expand and form a self-locking mechanism. After the solution in the lifting storage cylinder is drained, the temperature of the shape memory alloy block drops, and the lifting storage cylinder is then raised and reset by the push spring.

[0031] Compared with the prior art, the present invention has the following advantages:

[0032] This invention adjusts the material used in the preparation of cable sheaths by setting up corresponding mechanisms, thereby improving the crack resistance of the cable sheaths and thus better protecting the cables. It also improves the production equipment for nitrile PVC sheaths, ensuring that the waste gas generated during the extrusion process of the cable sheaths can be fully purified, preventing the discharge of harmful components, thus avoiding harm to workers and preventing air pollution after discharge. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a perspective view of a production equipment for a nitrile-PVC composite sheath for wind power cables according to an embodiment of the present invention;

[0035] Figure 2 This is a partial cross-sectional view of a production equipment for a nitrile-PVC composite sheath for wind power cables according to an embodiment of the present invention.

[0036] Figure 3 for Figure 2 Schematic diagram of the structure at point A in the middle;

[0037] Figure 4 for Figure 2 Schematic diagram of the structure at point B;

[0038] Figure 5 for Figure 2 Schematic diagram of the structure at point C;

[0039] Figure 6 for Figure 2 Schematic diagram of the structure at point D;

[0040] Figure 7 for Figure 2 Schematic diagram of the structure at point E in the middle;

[0041] Figure 8 for Figure 2 Schematic diagram of the structure at point F;

[0042] Figure 9 This is a cross-sectional view of the first water spray purification mechanism in one embodiment of the present invention;

[0043] Figure 10 for Figure 9 Schematic diagram of the structure at point G in the middle;

[0044] Figure 11 for Figure 9 Schematic diagram of the structure at point H;

[0045] Figure 12 This is a schematic diagram of the transfer tube in one embodiment of the present invention.

[0046] In the diagram: 1. Extrusion equipment; 101. Cooling tank frame; 102. Support plate; 2. First water spray purification mechanism; 201. Upper outer frame; 202. Support frame; 203. Waterproof cover; 204. Air outlet pipe; 205. First fixing bolt; 206. Motor; 207. Fan blade; 208. Fixing rod; 209. Water pump; 210. Water delivery pipe; 211. Water suction pipe; 212. Second fixing bolt; 213. Dispersion frame; 214. Spraying pipe; 215. Nozzle; 216. Transmission pipe; 3. Triggering mechanism; 301. First fixing frame; 302. Water permeable hole; 303. Limiting post; 304. Floating block; 305. Triggering block; 306. Upper contact block. 4. Second neutralization and purification mechanism; 401. Fixed cylinder; 402. Lifting storage cylinder; 403. Lifting sealing bucket; 404. Lower leakage hole; 405. Sealing sleeve; 406. Transmission gas pipe; 407. Gas hole; 408. Second fixed frame; 409. Activated carbon; 410. Connecting gas pipe; 411. Fixed circular plate; 412. Limiting slide bar; 413. Support ring plate; 414. Push spring; 415. Exhaust hole; 416. Limiting cavity; 417. Drain pipe; 418. Pull rod; 5. Transfer mechanism; 501. Transfer block; 502. Transfer hole; 503. Shape memory alloy block; 6. Control box; 7. Return pipe; 8. Transfer pipe; 801. Electric control valve. Detailed Implementation

[0047] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the scope of protection of the present invention.

[0048] This invention discloses a nitrile-PVC composite sheath for wind power cables, referenced... Figures 1-12 As shown, a nitrile-PVC composite sheath for wind power cables is provided, comprising the following raw materials in parts: 100 parts polyvinyl chloride resin; 10-15 parts nitrile rubber; 50-60 parts plasticizer; 20-40 parts activated calcium carbonate; 6-7 parts stabilizer; 0.3-0.4 parts lubricant; 0.9-3.0 parts filler; 0.2-0.6 parts accelerator; and 6-10 parts anti-cracking filler.

[0049] Specifically, the stabilizer is made of lead cyanurate, the lubricant is barium stearate, the plasticizer is dioctyl sebacate, the filler is kaolin, and the accelerator is lead stearate. The anti-cracking filler includes: 40%-45% magnesium hydroxide, 32%-35% heavy calcium carbonate, 20%-28% gypsum powder, 2%-3% cellulose, and 3%-5% water-reducing agent.

[0050] refer to Figures 1-12As shown, a production equipment for a nitrile PVC composite sheath for wind power cables includes: an extrusion device 1, a first water spray purification mechanism 2, a triggering mechanism 3, a second neutralization purification mechanism 4, and a transfer mechanism 5.

[0051] refer to Figure 1 As shown, a cooling tank frame 101 is provided on one side of the extrusion equipment 1 for pouring in cooling water. The extruded cable composite sheath is then inserted into the cooling water, allowing the cable composite sheath to cool and solidify quickly. Multiple support plates 102 are fixed below the cooling tank frame 101 to support it.

[0052] refer to Figures 1-10 As shown, the first water spray purification mechanism 2 is located above the cooling tank frame 101. The first water spray purification mechanism 2 includes an upper outer frame 201, which provides a protective cover for absorbing waste gas. A support frame 202 is fixed inside the upper outer frame 201 to support the motor 206. A water storage cavity is cut into the support frame 202 to facilitate the collection and storage of ammonia water, thereby transporting the ammonia water to the lifting storage cylinder 402 to provide conditions for the second purification treatment. A waterproof cover 203 is provided above the support frame 202 to prevent the purified water and ammonia water sprayed by the nozzle 215 from entering the exhaust pipe 204. An exhaust pipe 204 is inserted into the waterproof cover 203 to transport the absorbed waste gas into the upper outer frame 201.

[0053] The waterproof cover 203 is fixed with a first fixing bolt 205 to fix the waterproof cover 203 and prevent the waterproof cover 203 from shaking or shifting.

[0054] In addition, multiple motors 206 are installed inside the support frame 202 to provide power for sucking up exhaust gas. The output end of the motor 206 is fixedly connected to a fan blade 207. A fixing rod 208 is connected between the motor 206 and the support frame 202 to fix the motor 206.

[0055] refer to Figures 1-2 As shown, a water pump 209 is installed outside the upper outer frame 201 to provide power for the extraction of ammonia water. This allows the ammonia water in the storage chamber to be extracted and transported to the dispersion frame 213, where it can be sprayed out again to come into contact with the exhaust gas and fully absorb the ammonia. The water pump 209 is connected to a water delivery pipe 210 and a water extraction pipe 211, both used for transporting ammonia water.

[0056] The water delivery pipe 210 is fixed with multiple second fixing bolts 212 to secure it and prevent it from shaking or shifting. A dispersion frame 213 is installed on the upper outer frame 201 to disperse the purified water and ammonia into multiple spray pipes 214, which are then sprayed out from multiple nozzles 215, increasing the spray area of ​​the purified water and ammonia.

[0057] refer to Figures 1-3 As shown, multiple spray pipes 214 are fixed on the dispersion frame 213 for conveying purified water and ammonia water to the nozzles 215. One end of each spray pipe 214 is fixedly connected to a nozzle 215 to spray the purified water and ammonia water, ensuring sufficient contact between the purified water and ammonia water and the exhaust gas. A transmission pipe 216 is also connected to the dispersion frame 213 to facilitate the delivery of purified water into the upper outer frame 201.

[0058] refer to Figure 4 As shown, the triggering mechanism 3 is located inside the storage water chamber. The triggering mechanism 3 provides the triggering conditions to facilitate the initiation of the second stage of waste gas purification. The triggering mechanism 3 includes a first fixed frame 301, providing space for the lifting and lowering of the floating block 304. Multiple evenly distributed water-permeable holes 302 are drilled on the first fixed frame 301 to facilitate the ammonia water to float the floating block 304, thus allowing the floating block 304 to rise as the ammonia water level in the storage water chamber increases. A limiting post 303 is fixed inside the first fixed frame 301 to limit the lifting and lowering of the floating block 304.

[0059] refer to Figure 4 As shown, a floating block 304 is fitted onto the limiting post 303 to support the trigger block 305 and to drive the trigger block 305 to move up and down. The trigger block 305 is fixed on the floating block 304, and an upper contact block 306 is provided above the trigger block 305, which is fixed to the first fixed frame 301. The trigger block 305 is electrically connected to the control box 6, so that when the trigger block 305 contacts the upper contact block 306, the control box 6 can start the water pump 209 and open the electric control valve 801.

[0060] refer to Figures 1-12 As shown, the second neutralization and purification mechanism 4 is located on one side of the upper outer frame 201. The second neutralization and purification mechanism 4 includes a fixed cylinder 401, providing space for the lifting and lowering of the lifting storage cylinder 402, thus providing conditions for the second stage of purification treatment of the waste gas. Fixed legs are provided below both the fixed cylinder 401 and the upper outer frame 201 to support them. The fixed cylinder 401 contains the lifting storage cylinder 402, which stores an alkaline solution. This allows the acidic components in the waste gas to be neutralized by the alkaline ammonia solution after the waste gas is introduced into the solution, improving the purification effect.

[0061] refer to Figures 1-6As shown, a lifting and sealing bucket 403 is provided above the lifting storage cylinder 402. This bucket is used to move the sealing sleeve 405 up and down and to seal the return pipe 7 after descending, thereby adjusting the flow direction of the exhaust gas. Multiple evenly distributed lower leakage holes 404 are drilled on the lifting and sealing bucket 403 to facilitate the flow of exhaust gas. Multiple sealing sleeves 405 are fixed on the lifting and sealing bucket 403 to seal the gas holes 407, allowing the gas to flow back from the return pipe 7 to the area below the upper outer frame 201.

[0062] Specifically, a transmission gas pipe 406 is slidably connected inside the sealing sleeve 405 for introducing waste gas into the solution inside the lifting storage cylinder 402, facilitating the purification of the waste gas. A fixing column connects the transmission gas pipe 406 to the fixing cylinder 401 to fix the transmission gas pipe 406 and prevent it from moving, allowing the sealing sleeve 405 and the transmission gas pipe 406 to slide relative to each other when the lifting sealing bucket 403 moves the sealing sleeve 405 up and down. Multiple air holes 407 are drilled in the transmission gas pipe 406 to facilitate the flow of gas into it.

[0063] Specifically, a return pipe 7 is connected between the upper outer frame 201 and the fixed cylinder 401. One end of the return pipe 7 is inserted below the upper outer frame 201, and the other end of the return pipe 7 inserted into the fixed cylinder 401 is located between the lifting sealing bucket 403 and the fixed circular plate 411. Before the lifting sealing bucket 403 descends, the exhaust gas entering the fixed cylinder 401 will flow back to the lower part of the upper outer frame 201 through the return pipe 7. After the lifting sealing bucket 403 descends, it can block the return pipe 7, allowing the exhaust gas to enter the transmission gas pipe 406 through the gas hole 407 and then be introduced into the ammonia water for purification treatment.

[0064] In addition, several transfer pipes 8 are connected between the upper outer frame 201 and the fixed cylinder 401. Ammonia water from the water storage chamber on the supporting frame 202 flows into the lifting storage cylinder 402 through these transfer pipes 8, facilitating the entry of waste gas into the lifting storage cylinder 402 for secondary purification. An electrically controlled valve 801 is installed on each transfer pipe 8, allowing for the control of the transfer pipe's opening and closing, facilitating operation by staff.

[0065] refer to Figure 5 As shown, a second fixing frame 408 is fixed on the upper outer frame 201 to fix the activated carbon 409 and prevent it from falling off or moving. The activated carbon 409 is installed inside the second fixing frame 408 to purify the exhaust gas, thereby improving the purification effect. A connecting gas pipe 410 connects the second fixing frame 408 and the fixing cylinder 401 to transfer the exhaust gas inside the upper outer frame 201 to the fixing cylinder 401.

[0066] The fixed cylinder 401 has multiple vent holes 415 for discharging the purified waste gas and preventing it from accumulating inside. The lifting storage cylinder 402 has a limiting cavity 416, which allows the shape memory alloy block 503 to be locked inside the limiting cavity 416 after being heated and expanded, forming a self-locking mechanism. This prevents the lifting storage cylinder 402 from rising and resetting, allowing the solution inside the lifting storage cylinder 402 to be completely drained and preventing the solution from leaking into the fixed cylinder 401.

[0067] refer to Figure 7 As shown, a fixed circular plate 411 is fixed inside the fixed cylinder 401 to isolate the space inside the fixed cylinder 401 and prevent the gas after the second purification from flowing upward. Multiple limiting slide rods 412 connect the fixed circular plate 411 and the fixed cylinder 401, which limit the movement of the support ring plate 413, thus preventing the lifting storage cylinder 402 from shaking. The lifting storage cylinder 402 is fixed with a support ring plate 413, and the multiple limiting slide rods 412 are arranged through the support ring plate 413.

[0068] Specifically, a push spring 414 is connected between the support ring plate 413 and the fixed cylinder 401 to push the support ring plate 413, thereby enabling the lifting storage cylinder 402 to move upward and reset, thus facilitating reuse.

[0069] In addition, a drain pipe 417 is installed on the fixed cylinder 401, through which the used solution can be discharged. Multiple pull rods 418 are connected between the lifting storage cylinder 402 and the lifting sealing hopper 403. The pull rods 418 enable the lifting storage cylinder 402 to pull the lifting sealing hopper 403 down when it descends, thereby blocking the return pipe 7 and exposing the vent 407, which facilitates the adjustment of the gas flow direction.

[0070] refer to Figures 1-12 As shown, a control box 6 is installed on the fixed cylinder 401. The control box 6 is electrically connected to the water pump 209, the trigger block 305 and the electric control valve 801, so that the control box 6 can control the water pump 209, the trigger block 305 and the electric control valve 801 to start, open or close.

[0071] refer to Figures 1-8 As shown, the transfer mechanism 5 is located below the lifting storage cylinder 402. The transfer mechanism 5 is used to slowly discharge the purified liquid. The transfer mechanism 5 includes a transfer block 501, which is used to seal the bottom of the lifting storage cylinder 402 to prevent the solution in the lifting storage cylinder 402 from leaking into the fixed cylinder 401. The transfer block 501 has a transfer hole 502 for receiving the solution in the lifting storage cylinder 402, allowing the solution to enter the drain pipe 417 through the transfer hole 502 for easy discharge.

[0072] Specifically, a shape memory alloy block 503 is installed on the adapter block 501, which is used to expand and get stuck in the limiting cavity 416, thereby locking the lifting storage cylinder 402 and preventing the lifting storage cylinder 402 from resetting. The shape memory alloy block 503 has the property of rapidly expanding when the temperature rises and shrinking back to its original size when the temperature returns to normal.

[0073] Furthermore, by neutralizing the acidic components in the exhaust gas with the alkaline solution of ammonia, the temperature of the solution in the lifting storage cylinder 402 can be increased by utilizing the exothermic property of the neutralization reaction. This heat transfer then raises the temperature of the shape memory alloy block 503, facilitating its expansion and self-locking. After the solution in the lifting storage cylinder 402 is drained, the temperature of the shape memory alloy block 503 drops, and the lifting storage cylinder 402 can be raised and reset by the push spring 414.

[0074] In actual use, the extrusion equipment 1 will extrude the cable composite sheath during startup, and waste gas will be generated during the extrusion process. After the motor 206 starts, it will drive the fan blade 207 to rotate, so that the generated waste gas can be sucked upward immediately. Then the waste gas is transported to the waterproof cover 203 through the exhaust pipe 204 and then floats upward. The transmission pipe 216 will transport purified water, so that the purified water is sprayed out from multiple nozzles 215, so that the purified water and the waste gas can fully contact each other. The purified water can absorb the ammonia in the waste gas, and then form alkaline ammonia water that falls into the storage water chamber in the support frame 202.

[0075] The purified exhaust gas will be adsorbed and purified by activated carbon 409 and then passed into the fixed cylinder 401. However, due to the obstruction of the sealing sleeve 405, the exhaust gas can only flow back to the bottom of the upper outer frame 201 through the return pipe 7, so that it can be purified a second time. Furthermore, with the delivery of purified water, the ammonia water in the storage water chamber increases, which can drive the floating block 304 to rise.

[0076] The floating block 304 will drive the trigger block 305 to rise and move. When the trigger block 305 contacts the upper contact block 306, the control box 6 will start the water pump 209 and open the electric control valve 801. The water pump 209 can extract the ammonia water in the storage chamber, and then transport it to the dispersion frame 213 through the water delivery pipe 210. Finally, it is sprayed out through the nozzle 215, so that the ammonia water can come into contact with the exhaust gas multiple times and achieve the effect of fully absorbing ammonia.

[0077] Furthermore, ammonia water can be transported and sprinkled into the lifting storage tank 402 through the transfer pipe 8. As the ammonia water is transported, the gravity on the lifting storage tank 402 gradually increases, causing it to move downwards. At the same time as the lifting storage tank 402 moves downwards, the lifting sealing bucket 403 is also pulled downwards by the pull rod 418, causing the lifting sealing bucket 403 to gradually descend. After the lifting sealing bucket 403 descends a certain distance, it will expose the vent 407 and block the return pipe 7. At this time, the staff will remove the blockage block of the drain pipe 417.

[0078] The waste gas entering the fixed cylinder 401 is transported to the ammonia water through the transmission pipe 406. The alkaline solution absorbs the acidic components in the waste gas, improving the purification effect. During the neutralization process, a certain amount of heat is released, causing the temperature of the shape memory alloy block 503 to rise. As the temperature of the shape memory alloy block 503 rises, it expands rapidly, thus forming a self-locking effect. This prevents the solution in the lifting storage cylinder 402 from being completely drained and returning to its original position, thereby preventing the purified solution from leaking into the fixed cylinder 401.

[0079] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0080] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A production equipment for nitrile-PVC composite sheaths for wind power cables, characterized in that, include: An extrusion device (1) is provided with a cooling tank frame (101) on one side, and a plurality of support plates (102) are fixed below the cooling tank frame (101). The first water spray purification mechanism (2) is located above the cooling tank frame (101). The first water spray purification mechanism (2) includes an upper outer frame (201), a support frame (202) is fixed inside the upper outer frame (201), a water storage cavity is carved on the support frame (202), a waterproof cover (203) is provided above the support frame (202), an air outlet pipe (204) is inserted inside the waterproof cover (203), and a first fixing bolt (205) is fixed on the waterproof cover (203). A dispersion frame (213) is installed on the upper outer frame (201), and a water pump (209) is installed outside the upper outer frame (201) to provide power for extracting ammonia water, so that the ammonia water in the storage water chamber can be extracted and transported to the dispersion frame (213). The water pump (209) is connected to a water delivery pipe (210) and a water pumping pipe (211). Multiple second fixing bolts (212) are fixed on the water delivery pipe (210). Multiple spray pipes (214) are fixed on the dispersion frame (213). One end of the spray pipe (214) is fixedly connected to a nozzle (215). A transmission pipe (216) is also connected to the dispersion frame (213) to facilitate the transport of purified water to the upper outer frame (201). The triggering mechanism (3) is located in the storage water chamber. The triggering mechanism (3) is used to provide triggering conditions to facilitate the start of the second purification treatment of the exhaust gas. The second neutralization and purification mechanism (4) is located on one side of the upper outer frame (201). The second neutralization and purification mechanism (4) includes a fixed cylinder (401), a lifting storage cylinder (402) is provided inside the fixed cylinder (401), a lifting sealing bucket (403) is provided above the lifting storage cylinder (402), a plurality of evenly distributed lower leakage holes (404) are drilled on the lifting sealing bucket (403), a plurality of sealing sleeves (405) are fixed on the lifting sealing bucket (403), a transmission air pipe (406) is slidably connected inside the sealing sleeve (405), a fixed column is connected between the transmission air pipe (406) and the fixed cylinder (401), and a plurality of air holes (407) are drilled on the transmission air pipe (406). A second fixing frame (408) is fixed on the upper outer frame (201), activated carbon (409) is installed inside the second fixing frame (408), and a connecting air pipe (410) is connected between the second fixing frame (408) and the fixing cylinder (401). Several transfer pipes (8) are also connected between the upper outer frame (201) and the fixed cylinder (401). Ammonia water in the water storage chamber on the support frame (202) can be flowed into the lifting storage cylinder (402) through the transfer pipes (8). An electric control valve (801) is installed on the transfer pipe (8). The electric control valve (801) can control the opening and closing of the transfer pipe (8). A support ring plate (413) is fixed on the lifting storage cylinder (402), and a fixed circular plate (411) is fixed inside the fixed cylinder (401). A plurality of limiting slide rods (412) are connected between the fixed circular plate (411) and the fixed cylinder (401). The plurality of limiting slide rods (412) are arranged through the support ring plate (413), and a push spring (414) is connected between the support ring plate (413) and the fixed cylinder (401). The transfer mechanism (5) is located below the lifting storage cylinder (402) and is used to slowly discharge the purified liquid. The adapter mechanism (5) includes an adapter block (501), an adapter hole (502) is drilled on the adapter block (501), and a shape memory alloy block (503) is installed on the adapter block (501). A limiting cavity (416) is drilled on the lifting storage cylinder (402), so that the shape memory alloy block (503) can be stuck in the limiting cavity (416) after being heated and expanded, forming a self-locking mechanism, thereby preventing the lifting storage cylinder (402) from rising and resetting.

2. The production equipment for a nitrile PVC composite sheath for wind power cables according to claim 1, wherein the PVC composite sheath is produced by extrusion using an extrusion device (1), and the PVC composite sheath comprises the following parts of raw materials: 100 parts of polyvinyl chloride resin; 10-15 parts of nitrile rubber; 50-60 parts of plasticizer; 20-40 parts of activated calcium carbonate; 6-7 parts of stabilizer; 0.3-0.4 parts of lubricant; 0.9-3.0 parts of filler; 0.2-0.6 parts of accelerator; and 6-10 parts of anti-cracking filler.

3. The production equipment for nitrile-PVC composite sheaths for wind power cables according to claim 2, characterized in that, The stabilizer is made of lead cyanurate, the lubricant is barium stearate, the plasticizer is dioctyl sebacate, the filler is kaolin, and the accelerator is lead stearate.

4. The production equipment for nitrile-PVC composite sheaths for wind power cables according to claim 2, characterized in that, The anti-cracking filler comprises: 40%-45% magnesium hydroxide, 32%-35% heavy calcium carbonate, 20%-28% gypsum powder, 2%-3% cellulose, and 3%-5% water-reducing agent.

5. The production equipment for nitrile-PVC composite sheaths for wind power cables according to claim 1, characterized in that, Multiple motors (206) are installed inside the support frame (202). The output end of the motor (206) is fixedly connected to a fan blade (207). A fixed thin rod (208) connects the motor (206) to the support frame (202).

6. The production equipment for nitrile-PVC composite sheaths for wind power cables according to claim 1, characterized in that, The triggering mechanism (3) includes a first fixed frame (301), on which a plurality of evenly distributed water-permeable holes (302) are drilled. A limiting post (303) is fixed inside the first fixed frame (301). A floating block (304) is sleeved on the limiting post (303). A trigger block (305) is fixed on the floating block (304). An upper contact block (306) is provided above the trigger block (305). The upper contact block (306) is fixed on the first fixed frame (301).

7. The production equipment for nitrile-PVC composite sheaths for wind power cables according to claim 1, characterized in that, The fixed cylinder (401) has multiple vent holes (415).

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