A high voltage cable insulation compound mixing device

Abstract

The application discloses a high-voltage cable insulation material mixing device, and belongs to the cable equipment field, and solves the problem of long-term storage of materials in the dead angle inside a mixing tank during mixing of extra-high-voltage cable insulation materials in the prior art.In the application, the cylindrical top end face and the cylindrical bottom end face of the tank body are respectively provided with one material port, and the two material ports are respectively communicated with the inside of the tank body; the driving device comprises two driving ends, the two driving ends of the driving device are respectively located on the two sides of the tank body, and the driving shafts of the two driving ends of the driving device are coaxially arranged; one of the driving ends of the driving device is in transmission connection with the upper segment of the cylindrical side wall of the tank body, and the other driving end of the driving device is in transmission connection with the lower segment of the cylindrical side wall of the tank body; the tank body is provided with a heating and heat preserving device and a pressure control device.The high-voltage cable insulation material mixing device maintains the stable performance of materials and reduces the long-term aging phenomenon.

Description

Technical Field

[0001] This invention relates to a high-voltage cable insulation material mixing device, belonging to the field of cable equipment. Background Technology

[0002] Commonly used high-voltage cable voltage levels are 35-110 kV, 110 kV-750 kV are classified as ultra-high-voltage cables, and above 1000 kV are classified as extra-high-voltage cables. Ultra-high-voltage and extra-high-voltage cables are essential power transmission equipment for ultra-long-distance power transmission, possessing numerous advantages such as long transmission distance, large capacity, high efficiency, low loss, low unit cost, and small footprint. They can effectively solve the problem of ultra-long-distance, ultra-large-scale energy transmission.

[0003] The insulation material of high-voltage cables is a mixture of various materials and additives. Mixing tanks are generally used to mix the components of the high-voltage cable insulation material. Mixing tanks are containers used for storing and mixing dry materials and are widely used in chemical, food, pharmaceutical, and construction industries. Their core function is to achieve efficient and uniform mixing of dry materials. High-voltage cable insulation material. However, existing... Mixing containers (such as cylindrical or hexagonal containers) are prone to creating hard-to-clean powder dead zones inside. The problem of material residue in these dead zones is a common industrial challenge, especially when mixing high-voltage cable insulation materials. If material remains in these dead zones and cannot be thoroughly cleaned over a long period, the aged insulation material will mix with the new insulation material after mixing, reducing the high-voltage resistance of the insulation and thus affecting the performance of the high-voltage cable. Application content

[0004] This application provides a high-voltage cable insulation material mixing device to maintain the stability of the material's performance and reduce long-term aging.

[0005] The technical solution adopted in this application is a high-voltage cable insulation material mixing device, including a tank, a drive device, and a frame. The tank is mounted on the frame and driven to rotate by the drive device. The tank is connected to the drive device in a transmission connection. The tank is a closed cylindrical shape; the top and bottom surfaces of the cylindrical tank each have a material inlet, and the two material inlets are respectively connected to the interior of the tank. The driving device includes two driving ends, which are located on both sides of the tank body, and the driving shafts of the two driving ends are coaxially arranged; one of the driving ends of the driving device is connected to the upper section of the cylindrical side wall of the tank body, and the other driving end of the driving device is connected to the lower section of the cylindrical side wall of the tank body. The tank is connected to a heating and insulation device and a pressure control device.

[0006] The optimized high-voltage cable insulation mixing device described above has nozzles inside the tank. The nozzle is located on the inner wall of the tank near the drive end; the spray direction of the nozzle is set at an angle of ° to the inner wall of the tank where the nozzle is located, and the feed end of the nozzle passes through the side wall of the tank and is connected to the peristaltic pump through a pipeline. The nozzle is sealed and fixed to the side wall of the tank and rotates with the tank.

[0007] The optimized high-voltage cable insulation material mixing device includes a jacketed water jacket cavity, a circulation pipeline, and a mold temperature controller. A sealed jacketed water jacket cavity is integrally welded to the outside of the cylindrical sidewall of the tank, and a flow guide baffle is provided inside the jacketed water jacket cavity. The inlet and outlet of the jacketed water jacket cavity are respectively located inside the drive shaft on one side of the tank body, and the water interface of the jacketed water jacket cavity rotates synchronously with the tank body. The mold temperature controller is connected to the inlet and outlet of the jacketed water jacket cavity through a circulation pipeline.

[0008] The optimized high-voltage cable insulation material mixing device includes a pressure sensor, a pressure relief valve, a rotary air connector, and an external pressure-stabilized air source. The pressure sensor and pressure relief valve are both installed on the inner wall of the tank near the drive end; the probe of the pressure sensor extends into the inner cavity of the tank. The rotary air connector is located inside the drive shaft on one side of the tank; the rotary air connector has a rotating end and a fixed end; The rotating end of the rotary air connector is located inside the drive shaft of the drive end on one side of the tank and rotates synchronously with the tank; the fixed end of the rotary air connector is fixed on the frame and connected to an external pressure-stabilized air source through a gas pipeline; the rotating end of the rotary air connector and the fixed end of the rotary air connector are rotary sealed.

[0009] The optimized high-voltage cable insulation material mixing device described above has a dual-sided synchronous drive structure, and the drive device includes a power source. One of the driving ends of the drive device is the active driving end and is connected to the power source for transmission, while the other driving end of the drive device is the driven support end. The drive end of the drive unit is rigidly connected to the tank body via a flange.

[0010] In the optimized high-voltage cable insulation material mixing device, the tank wall is cylindrical; the material inlet and outlet direction of the tank is perpendicular to the axis of the drive shaft at the two drive ends of the drive device.

[0011] In the optimized high-voltage cable insulation material mixing device, one of the material inlets is material inlet one, which is located on the cylindrical top surface of the tank near one of its edges; the other material inlet is material inlet two, which is located on the cylindrical bottom surface of the tank on the opposite edge of material inlet one.

[0012] In the optimized high-voltage cable insulation material mixing device, both the top and bottom cylindrical surfaces of the tank are conical surfaces, and material inlet one and material inlet two are located at the top of the conical surface of the top cylindrical surface and the top of the conical surface of the bottom cylindrical surface of the tank, respectively.

[0013] The advantages of this application are as follows: In the technical solution of this application, the prismatic design makes the flow of materials in the tank more complex, effectively solving the problem of dead material and improving the mixing effect; the heat preservation and pressure preservation function can maintain the stability of material performance and reduce long-term aging; the fixed nozzle design ensures that the additives are sprayed evenly and improves the accuracy of mixing; the rotating tank makes the material mix more thoroughly and improves product quality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure in this application; Figure 2 This is a schematic diagram of the tank structure of this application; Figure 3 for Figure 2 Enlarged view of point A; Figure 4 for Figure 2 Enlarged view of point B. Detailed Implementation

[0015] The technical features of this application are further described below with reference to the accompanying drawings and specific embodiments.

[0016] As shown in the figure, this application is a high-voltage cable insulation material mixing device, including a tank 1 and a driving device 2, wherein the tank 1 and the driving device 2 are connected in a transmission manner. The tank body 1 is a closed cylindrical shape; the top and bottom surfaces of the cylindrical shape of the tank body 1 are respectively provided with a material inlet 101, and the two material inlets 101 are respectively connected to the interior of the tank body 1; The drive unit 2 includes two drive ends, which are located on opposite sides of the tank body 1, and their drive shafts are coaxially arranged. One drive end of the drive unit 2 is connected to the upper section of the cylindrical sidewall of the tank body 1, and the other drive end of the drive unit 2 is connected to the lower section of the cylindrical sidewall of the tank body 1. The tank body 1 has a heating and insulation device and a pressure control device.

[0017] In one embodiment of this application, the tank 1 has a nozzle 3 inside. The nozzle 3 is disposed on the inner side wall of the tank 1 near the drive end, and is fixedly installed on the inner side wall of the tank 1 at a 30° angle to the inner wall of the tank 1. The outer end of the nozzle 3 passes through the side wall of the tank 1 and is connected to a peristaltic pump through a pipeline. The peristaltic pump pushes the liquid additive into the tank 1, and the atomized spray is achieved through the nozzle 3. The nozzle 3 is sealed and fixed to the side wall of the tank 1, and can rotate synchronously with the tank 1. During the mixing process of the rotating tank 1, it continuously sprays, so that the liquid additive is evenly dispersed in the material.

[0018] In one embodiment of this application, a water-circulating heating and insulation device is provided on the outside of the tank body 1. The heating and insulation device includes a jacketed water jacket cavity 4, a circulation pipeline 5, and a mold temperature controller 6. The sealed jacketed water jacket cavity 4 is integrally welded to the outside of the cylindrical sidewall of the tank body 1, covering most of the cylindrical outer wall area of ​​the tank body 1 to achieve uniform heat exchange. The jacketed water jacket cavity 4 is provided with a flow guide baffle, which allows the circulating water to form an orderly flow channel along the tank wall, improving heating uniformity.

[0019] The inlet and outlet of the water-circulating heating and insulation device are respectively located inside the rotating shaft of the drive end on one side of the tank 1, and the water interface rotates synchronously with the tank 1. To avoid pipe entanglement, a rotary water connector is installed at the shaft end of the drive end. The fixed end of the rotary water connector is externally connected to the circulation pipe 5 of the mold temperature controller 6, and the rotating end of the rotary water connector is connected to the inlet and outlet of the water jacket cavity of the tank 1, so that the circulation water can remain unobstructed during the rotation of the tank 1.

[0020] The heating and insulation device provides constant-temperature circulating hot water through an external mold temperature controller 6. The mold temperature controller 6 can precisely control the water temperature and maintain the circulation pressure. The hot water continuously circulates within the jacketed water jacket cavity 4, evenly transferring heat to the material inside the tank 1 to achieve heating and insulation. The outer side of the jacketed water jacket cavity 4 outside the tank 1 is covered with insulation cotton or an insulation sleeve to reduce heat loss and ensure stable temperature during the mixing process.

[0021] The heating pipes are welded and sealed to the tank 1. The rotating water connector adopts a high-pressure sealing structure to adapt to the pressure and temperature environment under heating conditions, ensuring that the circulating water is leak-free, so that the materials in the tank 1 are mixed at a stable temperature, maintaining the stability of the high-voltage cable insulation material and reducing aging.

[0022] In one embodiment of this application, the pressure control device includes a pressure sensor, a pressure relief valve, a rotary air connector 8, and an external regulated air source. The pressure sensor and pressure relief valve are both installed on the inner wall of the tank 1 near the drive end. The probe of the pressure sensor extends into the inner cavity of the tank. The rotary air connector 8 is located inside the drive shaft on one side of the drive end of the tank 1; the rotary air connector 8 has a rotating end and a fixed end. The rotating end of the rotary air connector 8 is located inside the drive shaft on one side of the drive end of the tank 1 and rotates synchronously with the tank 1; the fixed end of the rotary air connector 8 is fixed to the frame 9 and connected to the external regulated air source through a gas pipeline; the rotating end of the rotary air connector 8 and the fixed end of the rotary air connector 8 form a rotary seal.

[0023] Both the pressure sensor and the pressure relief valve are installed on the inner wall of tank 1 near the drive end, arranged on the same side as nozzle 3, which facilitates centralized wiring and pipeline connection. The pressure sensor probe extends into the inner cavity of tank 1 to detect the internal gas phase pressure in real time. The pressure relief valve and the air inlet valve are fixed to the side wall of tank 1 by flanges or threaded seals to ensure reliable sealing and prevent air leakage under high pressure conditions.

[0024] To ensure the pressure control device rotates with the tank 1 and remains connected to an external pressure source, a rotary air connector is installed at the drive shaft end of the drive device. The rotating end of the rotary air connector rotates synchronously with the drive shaft of the tank 1, while the fixed end is fixed to the frame and connected to an external pressure-stabilized air source. The air inlet valve on the tank 1 is connected to the rotating end of the rotary air connector through an internal air passage, while the pressure relief valve is directly connected to the external atmosphere or a recovery pipeline.

[0025] During operation, an external pressure-stabilized air source supplies air to the tank 1 through a rotary air connector, and a pressure sensor provides real-time pressure feedback. When the pressure inside the tank exceeds the set value, the pressure relief valve opens to release pressure. If the pressure is insufficient, the air inlet valve opens to supply air, thus maintaining a stable internal pressure throughout the continuous rotation of the tank 1.

[0026] In one embodiment of this application, the drive device 2 is a dual-sided synchronous drive structure, and the drive device 2 includes a power source. One drive end of the drive device 2 is the active drive end and is connected to the power source for transmission, while the other drive end of the drive device 2 is the driven support end. The drive end of the drive device 2 is rigidly connected to the tank body 1 via a flange for transmission.

[0027] The drive unit 2 is used to drive the tank 1 to rotate around its own central axis, thereby achieving the tumbling and mixing of the insulating material inside the tank. The drive unit 2 adopts a dual-side synchronous drive structure, including a left drive end, a right drive end, and a power source. The two drive ends of the drive unit are respectively arranged on the left and right sides of the tank 1, and the drive shafts of the two drive ends are arranged coaxially, forming the rotational support axis of the tank.

[0028] Among them, one side of the drive device 2 is the active drive end, equipped with a drive motor and a reduction mechanism. The output shaft of the drive motor is rigidly connected to the drive shaft after being reduced in speed and torque by the reducer. The other side of the drive device 2 is the driven support end, which only plays a role in rotational support to ensure that the tank rotates smoothly and does not eccentrically shake.

[0029] The drive end of the drive device 2 is rigidly connected to the tank body 1 by a flange: transmission flanges are fixed at corresponding positions on the upper and lower sections of the cylindrical sidewall of the tank body, and the end of the drive shaft is fastened to the flange of the tank body by bolts through the flange, so that the torque of the drive shaft is directly transmitted to the tank body, driving the tank body to rotate synchronously. The transmission is reliable and there is no slippage.

[0030] The entire drive unit 2 is fixedly mounted on the equipment frame. The drive motor and reducer are located on the outside of the frame, and the drive shaft is supported and positioned by bearing seats to ensure rotational accuracy and operational stability. Under the drive of the drive unit, the tank can achieve continuous forward or bidirectional intermittent rotation, which allows the internal material to tumble fully and mix evenly with the auxiliary materials sprayed by the nozzles. At the same time, it ensures that the water circulation heating pipeline, pressure control air pipeline, and nozzle liquid delivery pipeline do not entangle or interfere with each other during rotation.

[0031] In one embodiment of this application, the tank wall of the tank 1 is cylindrical, and the feeding and discharging direction of the material inlet 101 of the tank 1 is perpendicular to the axis of the drive shaft of the two drive ends of the drive device 2.

[0032] One of the feed inlets 101 is feed inlet one, located on the edge of the cylindrical top surface of tank 1 near one side; the other feed inlet 101 is feed inlet two, located on the edge of the cylindrical bottom surface of tank 1 on the opposite side of feed inlet one. Both the cylindrical top surface and the cylindrical bottom surface of tank 1 are conical surfaces, with feed inlets one and two located at the apex of the conical surface of the cylindrical top surface and the apex of the conical surface of the cylindrical bottom surface of tank 1, respectively.

[0033] Of course, the above description is not intended to limit this application, nor is this application limited to the examples given above. Any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of this application should fall within the protection scope of this application.

Claims

1. A high-voltage cable insulation material mixing device, comprising a tank (1), a drive device (2), and a frame (9), wherein the tank (1) is mounted on the frame (9) and driven to rotate by the drive device (2), and the tank (1) is connected to the drive device (2) in a transmission manner; characterized in that: The tank (1) is a closed cylindrical shape; the top and bottom surfaces of the cylindrical tank (1) are respectively provided with a material inlet (101), and the two material inlets (101) are respectively connected to the interior of the tank (1); The driving device (2) includes two driving ends, which are located on both sides of the tank (1) respectively. The driving shafts of the two driving ends of the driving device (2) are coaxially arranged. One of the driving ends of the driving device (2) is connected to the upper section of the cylindrical side wall of the tank (1) and the other driving end of the driving device (2) is connected to the lower section of the cylindrical side wall of the tank (1). The tank (1) is connected to a heating and insulation device and a pressure control device.

2. The high-voltage cable insulation material mixing device according to claim 1, characterized in that: The tank (1) has a nozzle (3). The nozzle (3) is located on the inner wall of the tank (1) near the drive end; the spraying direction of the nozzle (3) is set at a 30° angle with the inner wall of the tank (1) where the nozzle (3) is located; the feed end of the nozzle (3) passes through the side wall of the tank (1) and is connected to the peristaltic pump through the pipeline. The nozzle (3) is sealed and fixed to the side wall of the tank (1) and rotates with the tank (1).

3. The high-voltage cable insulation material mixing device according to claim 1, characterized in that: The heating and heat preservation device includes a jacketed water jacket cavity (4), a circulation pipeline (5), and a mold temperature controller (6). A sealed jacketed water jacket cavity (4) is formed by integral welding on the outside of the cylindrical side wall of the tank body (1), and a flow guide baffle is provided inside the jacketed water jacket cavity (4). The inlet and outlet of the jacketed water jacket cavity (4) are respectively located inside the drive shaft on one side of the tank body (1), and the water interface of the jacketed water jacket cavity (4) rotates synchronously with the tank body. The mold temperature controller (6) is connected to the inlet and outlet of the jacketed water jacket cavity (4) through the circulation pipeline (5).

4. The high-voltage cable insulation material mixing device according to claim 1, characterized in that: The pressure control device includes a pressure sensor, a pressure relief valve, a rotary air connector (8), and an external pressure-stabilized air source. The pressure sensor and the pressure relief valve are both installed on the inner wall of the tank (1) near the drive end; the probe of the pressure sensor extends into the inner cavity of the tank. The rotary air connector (8) is located inside the drive shaft on one side of the tank body (1); the rotary air connector (8) has a rotating end and a fixed end; The rotating end of the rotary air connector (8) is located inside the drive shaft of the drive end on one side of the tank (1) and rotates synchronously with the tank (1); the fixed end of the rotary air connector (8) is fixed on the frame (9) and connected to the external pressure-stabilized air source through the gas pipeline; the rotating end of the rotary air connector (8) and the fixed end of the rotary air connector (8) are rotated and sealed.

5. The high-voltage cable insulation material mixing device according to claim 1, characterized in that: The drive device (2) is a dual-sided synchronous drive structure, and the drive device (2) includes a power source; One of the driving ends of the drive device (2) is the active driving end and is connected to the power source for transmission, and the other driving end of the drive device (2) is the driven support end; The drive end of the drive device (2) is rigidly connected to the tank body (1) by a flange.

6. The high-voltage cable insulation material mixing device according to claim 1, characterized in that: The tank (1) has a cylindrical wall; the material inlet (101) of the tank (1) is perpendicular to the axis of the drive shaft of the two drive ends of the drive device (2).

7. The high-voltage cable insulation material mixing device according to claim 1, characterized in that: One of the feed inlets (101) is feed inlet one, which is located on the cylindrical top surface of the tank body (1) near one of the edges; the other feed inlet (101) is feed inlet two, which is located on the cylindrical bottom surface of the tank body (1) on the opposite side of feed inlet one.

8. The high-voltage cable insulation material mixing device according to claim 7, characterized in that: The cylindrical top surface and the cylindrical bottom surface of the tank (1) are both conical surfaces. The first and second material outlets are located at the top of the conical surface of the cylindrical top surface of the tank (1) and the top of the conical surface of the cylindrical bottom surface of the tank (1), respectively.

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