Inner cone plug-in type high-voltage cable terminal installation device and installation method thereof

Abstract

The invention discloses an inner cone plug-in type high-voltage cable terminal mounting device, which comprises a bottom plate, an oil cylinder base is fixed on the upper surface of the bottom plate, and a pump cylinder and an output oil cylinder are arranged above the oil cylinder base; a single-stage piston in the pump cylinder is connected with a pedal force rod above the single-stage piston; two three-stage pistons are arranged in the output oil cylinder, and a pressure release valve communicated with an internal oil way is arranged on the side face of the output oil cylinder. The third-stage piston is fixed with the upper bearing plate; and adjustable guide pillars which are screwed on the upper surface of the bottom plate through guide pillar bases penetrate through the two ends of the bearing plate. The installation method of the device comprises the following steps of moving the device to an installation position, fixing the cable terminal, lifting the cable terminal to an installation height through a pedal force rod, separating the device from the cable terminal after installation is completed, and finally resetting the device. According to the device and the method, the installation efficiency is remarkably improved, the labor intensity of workers is reduced, the safety and the reliability in the installation process are enhanced, the installation requirements of cable terminals with different heights are met, and the device and the method have wide application prospects.

Description

Technical Field

[0001] This invention relates to the field of electrical installation and construction technology, specifically to an internal cone plug-in type high-voltage cable terminal installation device and its installation method. Background Technology

[0002] In the field of new energy power generation, with the continuous growth of global demand for clean energy, the construction scale of new energy power plants (such as solar power plants and wind power plants) is expanding day by day. As an important component of new energy power plants, the substation is responsible for boosting the voltage of the electricity generated by the power plant and connecting it to the power grid. The quality and efficiency of its electrical installation and construction directly affect the operating efficiency and economic benefits of the entire power plant.

[0003] In the electrical installation of substations, the installation of cable terminals for collector lines is a crucial step. This is especially true for the installation of internal cone plug-in high-voltage cable terminals, which require lifting the fabricated cable terminal, along with the cable, from the ground to the height of the internal cone insulator socket. This process demands not only precise operation but also consideration of the cable's weight and the complexity of the installation environment.

[0004] In recent years, the total installed capacity of new energy power plants has been continuously expanding, and the spacing and number of collection lines between primary equipment in substations have also increased accordingly. For example, in large solar power plants or wind power plants, the number of collection lines may reach dozens or even more, with each cable being quite long and heavy. In particular, the incoming cables of the collection lines within the plant, due to their large load power generation capacity, have a relatively heavy unit weight, which poses a great challenge to installation and construction.

[0005] Traditional installation methods for internal cone plug-in high-voltage cable terminals primarily rely on manual operation. Construction workers need to use cranes or other lifting equipment to raise the cable terminal to the installation height before proceeding with the installation. This method is not only labor-intensive and time-consuming, but also poses certain safety risks associated with working at heights. Furthermore, due to the significant weight of the cable terminal, the accuracy and efficiency of manual operation are difficult to guarantee, often leading to installation delays and impacting the overall project schedule and the achievement of installation milestones.

[0006] Therefore, in order to improve the installation efficiency of internal cone plug-in high-voltage cable terminals, reduce manual labor intensity, and ensure the safety and accuracy of the installation process, it is particularly important to develop an efficient, labor-saving, and easy-to-operate internal cone plug-in high-voltage cable terminal installation device and its installation method. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide an internal cone plug-in type high voltage cable terminal installation device and its installation method, so as to solve the problems of labor-intensive and inefficient installation in the prior art; the device realizes the lifting and installation of cable terminals through a hydraulic system, which significantly improves the installation efficiency and reduces the intensity of manual labor.

[0008] The technical solution adopted by this invention to solve the technical problem is as follows: An internal conical plug-in high-voltage cable terminal installation device includes a base plate, a hydraulic cylinder base, a pump cylinder, a foot pedal, an output hydraulic cylinder, a support plate, an adjustable guide post, and a pressure relief valve. The base plate supports the entire device, and the hydraulic cylinder base is fixed to the upper surface of the base plate. The pump cylinder is located above the hydraulic cylinder base and contains a single-stage piston. The foot pedal is connected to the single-stage piston in the pump cylinder and is used to drive the flow of hydraulic oil by manual pedaling. The output hydraulic cylinder is located above the hydraulic cylinder base and contains two three-stage pistons. The support plate is fixed above the three-stage pistons. The adjustable guide post passes through both ends of the support plate and is screwed to the upper surface of the base plate via a guide post base. The pressure relief valve is located on the side of the output hydraulic cylinder and is connected to the internal oil circuit to release hydraulic oil pressure and reset the device.

[0009] Preferably, a return spring is fixed between the lower part of the foot pedal and the pump cylinder, and the return spring is used to automatically reset after the foot pedal is released.

[0010] Preferably, the upper end of the adjustable guide post is provided with a limiting device for a buffer spring, which is used to limit the highest position of the support plate to prevent the cable terminal from exceeding the installation height.

[0011] Preferably, the lower part of the base plate is fixedly connected to four casters, and the casters are equipped with locking devices to fix the position of the device after it has been moved into place.

[0012] Preferably, the pump cylinder, output cylinder, and pressure relief valve are connected by an oil pipeline located inside the cylinder base, the oil pipeline including a check valve to ensure unidirectional flow of hydraulic oil.

[0013] Preferably, a detachable cable terminal fixing carrier is connected to the upper center of the bearing plate by a detachable bolt, the cable terminal fixing carrier being used to fix an inner cone plug-in high voltage cable terminal.

[0014] An installation method using the above-described internal cone plug-in high-voltage cable terminal installation device includes the following steps: (1) Move the device to the location where the plug-in high voltage cable terminal needs to be installed, and use the casters at the bottom of the base plate to adjust the position of the device, and fix the device by locking the casters. (2) Pass the manufactured and pressure-resistant inner cone plug-in cable terminal through the bearing plate through the middle hole of the cable terminal fixing carrier and fix it; (3) By manually stepping on the pump cylinder foot pedal, the hydraulic oil is driven to the three-stage piston in the output cylinder. The three-stage piston extends upward under the action of the internal hydraulic oil, driving the bearing plate to move upward along the adjustable guide post, so that the high-voltage inner cone plug-in cable terminal and the cable fixed at the cable terminal fixing carrier part gradually reach the installation height. (4) After the high-voltage inner cone plug-in cable terminal is installed, first open the detachable cable terminal fixing carrier to separate the whole device from the cable terminal; (5) Then open the pressure relief valve on the side of the output cylinder to reset the hydraulic oil inside the output cylinder and pump cylinder, and simultaneously reset the three-stage piston and bearing plate inside the output cylinder for reuse.

[0015] Preferably, when moving the device, the position of the device is adjusted using the casters at the bottom of the base plate, and the device is fixed by the locking device of the casters.

[0016] Preferably, during installation, the highest position of the support plate is limited by the limiting device on the adjustable guide post to prevent the cable terminal from exceeding the installation height.

[0017] Preferably, during installation, the pressure of the hydraulic oil is monitored in real time by a pressure sensor between the pump cylinder and the output cylinder, and the operating status of the hydraulic system is controlled by a controller.

[0018] The working principle of the internal cone plug-in high-voltage cable terminal installation device of the present invention is as follows: A. Hydraulic system drive: By manually stepping on the foot pedal, the single-stage piston in the pump cylinder is driven to move, pressing hydraulic oil from the pump cylinder into the output cylinder.

[0019] B. Piston movement: After the hydraulic oil enters the output cylinder, it pushes the two three-stage pistons 8 to extend upward; the movement of the three-stage pistons drives the bearing plate to move upward along the adjustable guide post.

[0020] C. Cable terminal lifting: The upward movement of the support plate causes the cable terminal fixing carrier and cable terminal fixed on it to gradually reach the installation height.

[0021] D. Limiting and Buffering: The adjustable guide post has a buffer spring limiting device at the top to limit the highest position of the support plate, preventing the cable terminal from exceeding the installation height, while also providing a buffering effect to protect the device and the cable terminal.

[0022] E. Reset Mechanism: After installation, open the pressure relief valve on the side of the output cylinder to reset the hydraulic oil. The three-stage piston and bearing plate will reset under the action of the returning hydraulic oil, and the device will return to its initial state, ready for the next use.

[0023] 1. Improved Installation Efficiency: ① The hydraulic system enables the lifting and installation of cable terminals, significantly reducing manual labor intensity and improving installation efficiency. Traditional manual lifting methods require multiple people and are inefficient, while this invention allows for simple foot operation to lift the cable terminals, greatly shortening installation time; ② The adjustable guide column design allows the device to adapt to the installation needs of cable terminals at different heights, further improving the device's versatility and flexibility; ③ The four casters at the bottom of the base plate allow for flexible adjustment of the horizontal position of the cable terminals during installation, further improving the convenience and accuracy of installation.

[0024] 2. Enhanced Safety: ① The limiting device and locking mechanism of the casters ensure the stability and safety of the device during installation. The limiting device effectively prevents the cable terminal from exceeding the installation height, avoiding equipment damage or safety accidents caused by excessive lifting. ② The casters are equipped with locking devices to ensure that the device will not move during installation, improving operational stability and safety. ③ The device's hydraulic system and mechanical structure have been optimized for stable operation in complex field environments, reducing the failure rate and further improving the device's safety and reliability.

[0025] 3. Easy Operation: ① The foot pedal design simplifies operation and is suitable for on-site construction environments. Operators can drive the hydraulic system with a simple foot pedal movement, requiring no complex operating skills and reducing the demands on operators. ② The cable terminal fixing carrier adopts a detachable design, facilitating the installation and removal of cable terminals and further improving operational convenience. ③ The device's reset mechanism is simple and efficient; it can be quickly reset by opening the pressure relief valve, ready for the next use.

[0026] 4. High adaptability: ① The adjustable guide post design allows the device to adapt to the installation needs of cable terminals at different heights, making it widely applicable; whether it is a small cable terminal or a large cable terminal, the device can effectively complete the installation task. ② The casters design makes the device more flexible during movement and can adapt to different construction site conditions.

[0027] 5. Reduced Labor Costs: ① The hydraulic system enables the lifting and installation of cable terminals, reducing the complexity and labor intensity of manual operations and lowering labor costs. Traditional manual lifting methods require multiple people to work together, while this invention only requires one person to operate, significantly reducing manpower requirements. ② The high efficiency and reliability of the device reduce additional costs caused by equipment failure or operational errors, further reducing the overall project cost.

[0028] 6. Improve overall project schedule: ① By increasing installation efficiency and reducing labor costs, this device can effectively shorten the project duration, improve the overall project schedule, and ensure timely project completion. ② The device's high efficiency and reliability reduce additional costs caused by equipment failure or operational errors, further reducing the overall project cost.

[0029] 7. High reliability: ① The hydraulic system and mechanical structure of the device have been optimized and designed to operate stably in complex field environments, reducing the failure rate. The design of the one-way valve ensures the one-way flow of hydraulic oil, improving the reliability of the system; ② The pressure relief valve allows the device to be quickly reset after the installation task is completed, ready for the next use, and has good reusability.

[0030] 8. Strong environmental adaptability: ① The device is designed with the complex environment of on-site construction in mind, and can work stably under different weather conditions and terrains, further improving the practicality and reliability of the device; ② The flexible design of the casters allows the device to move easily on uneven ground or in narrow spaces, adapting to various construction scenarios. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the internal cone plug-in high-voltage cable terminal installation device of the present invention; Figure 2 For the present invention Figure 1 A partially enlarged schematic diagram of the cable terminal fixing carrier; In the diagram: 1--base plate, 2--caster wheel, 3--cylinder base, 4--pump cylinder, 5--return spring, 6--foot pedal, 7--output cylinder, 8--three-stage piston, 9--cable terminal fixing carrier, 10--support plate, 11--limiting device, 12--adjustable guide post, 13--pressure relief valve, 14--guide post base. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1, see Figure 1 and Figure 2An internal cone plug-in high-voltage cable terminal installation device includes a base plate 1, a cylinder base 3, a pump cylinder 4, a foot pedal 6, an output cylinder 7, a support plate 10, an adjustable guide post 12, and a pressure relief valve 13. The base plate 1 supports the entire device, and the cylinder base 3 is fixed to the upper surface of the base plate 1. The pump cylinder 4 is located above the cylinder base 3 and contains a single-stage piston. The foot pedal 6 is connected to the single-stage piston in the pump cylinder 4 and is used to drive the flow of hydraulic oil by manual pedaling. The output cylinder 7 is located above the cylinder base 3 and contains two three-stage pistons 8. The support plate 10 is fixed above the three-stage pistons 8. The adjustable guide post 12 passes through both ends of the support plate 10 and is screwed to the upper surface of the base plate 1 via the guide post base 14. The pressure relief valve 13 is located on the side of the output cylinder 7 and is connected to the internal oil circuit to release hydraulic oil pressure and reset the device.

[0034] A return spring 5 is fixed between the lower part of the foot pedal 6 and the pump cylinder 4. The return spring 5 is used to automatically reset after the foot pedal 6 is released.

[0035] A buffer spring limiting device 11 is provided at the upper end of the adjustable guide post 12. The limiting device 11 is used to limit the highest position of the support plate 10 to prevent the cable terminal from exceeding the installation height.

[0036] Four casters 2 are fixedly connected to the lower part of the base plate 1. The casters 2 are equipped with locking devices to fix the position of the device after it has been moved into place.

[0037] Pump cylinder 4, output cylinder 7 and pressure relief valve 13 are connected by an oil pipeline located inside cylinder base 3. The oil pipeline includes a check valve to ensure unidirectional flow of hydraulic oil.

[0038] A detachable cable terminal fixing carrier 9 is connected to the upper center of the bearing plate 10 by detachable bolts. The cable terminal fixing carrier 9 is used to fix the inner cone plug-in high voltage cable terminal.

[0039] Example 2, the installation method of the internal cone plug-in type high-voltage cable terminal installation device described in Example 1, includes the following steps: (1) Move the device to the location where the plug-in high voltage cable terminal needs to be installed, and use the casters 2 at the bottom of the base plate 1 to adjust the position of the device, and fix the device by locking the casters 2. (2) Pass the manufactured and pressure-resistant inner cone plug-in cable terminal through the bearing plate 10 through the middle hole of the cable terminal fixing carrier 9 and fix it; (3) By manually stepping on the pump cylinder foot pedal 6, the hydraulic oil is driven to the three-stage piston 8 in the output cylinder 7. The three-stage piston 8 extends upward under the action of the internal hydraulic oil, driving the bearing plate 10 to move upward along the adjustable guide post 12, so that the high-voltage inner cone plug-in cable terminal and cable fixed at the cable terminal fixing carrier 9 gradually reach the installation height. (4) After the high-voltage inner cone plug-in cable terminal is installed, first open the detachable cable terminal fixing carrier 9 to separate the whole device from the cable terminal; (5) Then open the pressure relief valve 13 on the side of the output cylinder 7 to reset the hydraulic oil inside the output cylinder 7 and the pump cylinder 4, and simultaneously reset the three-stage piston 8 and the bearing plate 10 inside the output cylinder 7 for reuse.

[0040] When moving the device, the position of the device is adjusted by using the casters 2 at the bottom of the base plate 1, and the device is fixed by the locking device of the casters 2.

[0041] During installation, the maximum position of the support plate 10 is limited by the limiting device 11 on the adjustable guide post 12 to prevent the cable terminal from exceeding the installation height.

[0042] During installation, the pressure of the hydraulic oil is monitored in real time by a pressure sensor between pump cylinder 4 and output cylinder 7, and the operating status of the hydraulic system is controlled by a controller.

[0043] The working principle of the internal cone plug-in high-voltage cable terminal installation device of the present invention is as follows: A. Hydraulic system drive: By manually stepping on the foot pedal, the single-stage piston in the pump cylinder 4 is driven to move, and hydraulic oil is pressed from the pump cylinder into the output cylinder 7.

[0044] B. Piston movement: After the hydraulic oil enters the output cylinder 7, it pushes the two three-stage pistons 8 to extend upward; the movement of the three-stage pistons 8 drives the bearing plate 10 to move upward along the adjustable guide post 12.

[0045] C. Cable terminal lifting: The upward movement of the support plate 10 causes the cable terminal fixing carrier 9 and the cable terminal fixed on it to gradually reach the installation height.

[0046] D. Limiting and buffering: The buffer spring limiting device 11 at the upper end of the adjustable guide post 12 limits the highest position of the support plate 10 to prevent the cable terminal from exceeding the installation height, while providing a buffering effect to protect the device and the cable terminal.

[0047] E. Reset Mechanism: After installation, open the pressure relief valve 13 on the side of the output cylinder 7 to reset the hydraulic oil. The three-stage piston 8 and the bearing plate 10 will reset under the action of the returning hydraulic oil, and the device will return to its initial state, ready for the next use.

[0048] Although embodiments of the invention have been shown and described, those skilled in the art will recognize that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An internal cone plug-in type high-voltage cable terminal installation device, comprising a base plate (1), characterized in that: It also includes a cylinder base (3), a pump cylinder (4), a foot pedal (6), an output cylinder (7), a support plate (10), an adjustable guide column (12), and a pressure relief valve (13); the base plate (1) is used to support the entire device, and the cylinder base (3) is fixed to the upper surface of the base plate (1); the pump cylinder (4) is located above the cylinder base (3), and a single-stage piston is provided inside the pump cylinder (4); the foot pedal (6) is connected to the single-stage piston inside the pump cylinder (4) and is used to drive the hydraulic system by manual pedaling. Oil flow; the output cylinder (7) is located above the cylinder base (3), and the output cylinder (7) is provided with two three-stage pistons (8); the support plate (10) is fixed above the three-stage pistons (8); the adjustable guide column (12) passes through both ends of the support plate (10) and is screwed to the upper surface of the base plate (1) through the guide column base (14); the pressure relief valve (13) is located on the side of the output cylinder (7) and is connected to the internal oil circuit, used to release hydraulic oil pressure and reset the device.

2. The internal cone plug-in type high-voltage cable terminal installation device according to claim 1, characterized in that: A return spring (5) is fixed between the lower part of the foot pedal (6) and the pump cylinder (4), and the return spring (5) is used to automatically reset after the foot pedal (6) is released.

3. The internal cone plug-in type high-voltage cable terminal installation device according to claim 1, characterized in that: The upper end of the adjustable guide post (12) is provided with a buffer spring limiting device (11), which is used to limit the highest position of the support plate (10) to prevent the cable terminal from exceeding the installation height.

4. The internal cone plug-in type high-voltage cable terminal installation device according to claim 1, characterized in that: The lower part of the base plate (1) is fixedly connected to four casters (2), and the casters (2) are equipped with locking devices to fix the position of the device after it has been moved into place.

5. The internal cone plug-in type high-voltage cable terminal installation device according to claim 1, characterized in that: The pump cylinder (4), output cylinder (7) and pressure relief valve (13) are connected by an oil pipeline located inside the cylinder base (3), the oil pipeline including a check valve to ensure unidirectional flow of hydraulic oil.

6. The internal cone plug-in type high-voltage cable terminal installation device according to claim 1, characterized in that: The upper center of the support plate (10) is connected to a detachable cable terminal fixing carrier (9) by detachable bolts. The cable terminal fixing carrier (9) is used to fix the inner cone plug-in high voltage cable terminal.

7. An installation method using the internal cone plug-in type high-voltage cable terminal installation device according to any one of claims 1 to 6, characterized in that, Includes the following steps: (1) Move the device to the location where the plug-in high voltage cable terminal needs to be installed, and use the casters (2) at the bottom of the base plate (1) to adjust the position of the device, and fix the device by locking the casters (2); (2) Pass the completed and pressure-resistant inner cone plug-in cable terminal through the bearing plate (10) through the middle hole of the cable terminal fixing carrier (9) and fix it; (3) By manually stepping on the pump cylinder foot pedal (6), hydraulic oil is driven to the three-stage piston (8) in the output cylinder (7). The three-stage piston (8) extends upward under the action of the internal hydraulic oil, driving the bearing plate (10) to move upward along the adjustable guide column (12), so that the high-voltage inner cone plug-in cable terminal and cable fixed at the cable terminal fixing carrier (9) gradually reach the installation height; (4) After the high-voltage inner cone plug-in cable terminal is installed, first open the detachable cable terminal fixing carrier (9) to separate the whole device from the cable terminal; (5) Then open the pressure relief valve (13) on the side of the output cylinder (7) to reset the hydraulic oil inside the output cylinder (7) and pump cylinder (4), and simultaneously reset the three-stage piston (8) and bearing plate (10) inside the output cylinder (7) for reuse.

8. The installation method according to claim 7, characterized in that: When moving the device, the position of the device is adjusted by using the casters (2) at the bottom of the base plate (1), and the device is fixed by the locking device of the casters (2).

9. The installation method according to claim 7, characterized in that: During installation, the highest position of the support plate (10) is limited by the limiting device (11) on the adjustable guide post (12) to prevent the cable terminal from exceeding the installation height.

10. The installation method according to claim 7, characterized in that: During installation, the pressure of the hydraulic oil is monitored in real time by a pressure sensor between the pump cylinder (4) and the output cylinder (7), and the operating status of the hydraulic system is controlled by a controller.

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